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e5e809f4 | 1 | /* Process declarations and variables for C compiler. |
07c88314 | 2 | Copyright (C) 1988, 92-98, 1999, 2000 Free Software Foundation, Inc. |
e5e809f4 | 3 | Contributed by Michael Tiemann (tiemann@cygnus.com) |
8d08fdba MS |
4 | |
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
8d08fdba MS |
21 | |
22 | ||
23 | /* Process declarations and symbol lookup for C front end. | |
24 | Also constructs types; the standard scalar types at initialization, | |
25 | and structure, union, array and enum types when they are declared. */ | |
26 | ||
27 | /* ??? not all decl nodes are given the most useful possible | |
28 | line numbers. For example, the CONST_DECLs for enum values. */ | |
29 | ||
8d08fdba | 30 | #include "config.h" |
8d052bc7 | 31 | #include "system.h" |
8d08fdba MS |
32 | #include "tree.h" |
33 | #include "rtl.h" | |
34 | #include "flags.h" | |
35 | #include "cp-tree.h" | |
36 | #include "decl.h" | |
37 | #include "lex.h" | |
8d08fdba MS |
38 | #include <signal.h> |
39 | #include "obstack.h" | |
72b7eeff | 40 | #include "defaults.h" |
49c249e1 JM |
41 | #include "output.h" |
42 | #include "except.h" | |
54f92bfb | 43 | #include "toplev.h" |
7ddedda4 | 44 | #include "../hash.h" |
091f9839 | 45 | #include "defaults.h" |
4519c0a8 | 46 | #include "ggc.h" |
8d08fdba MS |
47 | |
48 | #define obstack_chunk_alloc xmalloc | |
49 | #define obstack_chunk_free free | |
50 | ||
51 | extern struct obstack permanent_obstack; | |
52 | ||
53 | extern int current_class_depth; | |
54 | ||
e1cd6e56 MS |
55 | extern tree static_ctors, static_dtors; |
56 | ||
30394414 JM |
57 | extern tree global_namespace; |
58 | ||
158991b7 | 59 | extern int (*valid_lang_attribute) PARAMS ((tree, tree, tree, tree)); |
62c154ed | 60 | |
47e19316 | 61 | /* Use garbage collection. */ |
fc6af6e3 | 62 | |
47e19316 | 63 | int ggc_p = 1; |
fc6af6e3 | 64 | |
8d08fdba MS |
65 | #ifndef WCHAR_UNSIGNED |
66 | #define WCHAR_UNSIGNED 0 | |
67 | #endif | |
68 | ||
81b3411c BS |
69 | #ifndef CHAR_TYPE_SIZE |
70 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
8d08fdba MS |
71 | #endif |
72 | ||
255512c1 | 73 | #ifndef BOOL_TYPE_SIZE |
e1cd6e56 | 74 | #ifdef SLOW_BYTE_ACCESS |
2ef16140 MM |
75 | /* In the new ABI, `bool' has size and alignment `1', on all |
76 | platforms. */ | |
77 | #define BOOL_TYPE_SIZE \ | |
78 | ((SLOW_BYTE_ACCESS && !flag_new_abi) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE)) | |
e1cd6e56 | 79 | #else |
d2e5ee5c | 80 | #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE |
e1cd6e56 | 81 | #endif |
255512c1 JM |
82 | #endif |
83 | ||
8d08fdba MS |
84 | /* We let tm.h override the types used here, to handle trivial differences |
85 | such as the choice of unsigned int or long unsigned int for size_t. | |
86 | When machines start needing nontrivial differences in the size type, | |
87 | it would be best to do something here to figure out automatically | |
88 | from other information what type to use. */ | |
89 | ||
90 | #ifndef SIZE_TYPE | |
91 | #define SIZE_TYPE "long unsigned int" | |
92 | #endif | |
93 | ||
94 | #ifndef PTRDIFF_TYPE | |
95 | #define PTRDIFF_TYPE "long int" | |
96 | #endif | |
97 | ||
98 | #ifndef WCHAR_TYPE | |
99 | #define WCHAR_TYPE "int" | |
100 | #endif | |
101 | ||
158991b7 KG |
102 | static tree grokparms PARAMS ((tree, int)); |
103 | static const char *redeclaration_error_message PARAMS ((tree, tree)); | |
8d08fdba | 104 | |
158991b7 | 105 | static void push_binding_level PARAMS ((struct binding_level *, int, |
49c249e1 | 106 | int)); |
158991b7 KG |
107 | static void pop_binding_level PARAMS ((void)); |
108 | static void suspend_binding_level PARAMS ((void)); | |
109 | static void resume_binding_level PARAMS ((struct binding_level *)); | |
110 | static struct binding_level *make_binding_level PARAMS ((void)); | |
111 | static void declare_namespace_level PARAMS ((void)); | |
112 | static void signal_catch PARAMS ((int)) ATTRIBUTE_NORETURN; | |
113 | static void storedecls PARAMS ((tree)); | |
114 | static void require_complete_types_for_parms PARAMS ((tree)); | |
115 | static void push_overloaded_decl_1 PARAMS ((tree)); | |
116 | static int ambi_op_p PARAMS ((tree)); | |
117 | static int unary_op_p PARAMS ((tree)); | |
118 | static tree store_bindings PARAMS ((tree, tree)); | |
119 | static tree lookup_tag_reverse PARAMS ((tree, tree)); | |
120 | static tree obscure_complex_init PARAMS ((tree, tree)); | |
121 | static tree maybe_build_cleanup_1 PARAMS ((tree, tree)); | |
122 | static tree lookup_name_real PARAMS ((tree, int, int, int)); | |
123 | static void warn_extern_redeclared_static PARAMS ((tree, tree)); | |
124 | static void grok_reference_init PARAMS ((tree, tree, tree)); | |
125 | static tree grokfndecl PARAMS ((tree, tree, tree, tree, int, | |
2c73f9f5 | 126 | enum overload_flags, tree, |
7a8f9fa9 | 127 | tree, int, int, int, int, int, int, tree)); |
158991b7 KG |
128 | static tree grokvardecl PARAMS ((tree, tree, RID_BIT_TYPE *, int, int, tree)); |
129 | static tree lookup_tag PARAMS ((enum tree_code, tree, | |
49c249e1 JM |
130 | struct binding_level *, int)); |
131 | static void set_identifier_type_value_with_scope | |
158991b7 KG |
132 | PARAMS ((tree, tree, struct binding_level *)); |
133 | static void record_builtin_type PARAMS ((enum rid, const char *, tree)); | |
134 | static void record_unknown_type PARAMS ((tree, const char *)); | |
135 | static int member_function_or_else PARAMS ((tree, tree, enum overload_flags)); | |
136 | static void bad_specifiers PARAMS ((tree, const char *, int, int, int, int, | |
49c249e1 | 137 | int)); |
158991b7 KG |
138 | static void lang_print_error_function PARAMS ((const char *)); |
139 | static tree maybe_process_template_type_declaration PARAMS ((tree, int, struct binding_level*)); | |
140 | static void check_for_uninitialized_const_var PARAMS ((tree)); | |
141 | static unsigned long typename_hash PARAMS ((hash_table_key)); | |
142 | static boolean typename_compare PARAMS ((hash_table_key, hash_table_key)); | |
143 | static void push_binding PARAMS ((tree, tree, struct binding_level*)); | |
144 | static int add_binding PARAMS ((tree, tree)); | |
145 | static void pop_binding PARAMS ((tree, tree)); | |
146 | static tree local_variable_p_walkfn PARAMS ((tree *, int *, void *)); | |
147 | static tree find_binding PARAMS ((tree, tree)); | |
148 | static tree select_decl PARAMS ((tree, int)); | |
149 | static int lookup_flags PARAMS ((int, int)); | |
150 | static tree qualify_lookup PARAMS ((tree, int)); | |
151 | static tree record_builtin_java_type PARAMS ((const char *, int)); | |
152 | static const char *tag_name PARAMS ((enum tag_types code)); | |
153 | static void find_class_binding_level PARAMS ((void)); | |
154 | static struct binding_level *innermost_nonclass_level PARAMS ((void)); | |
155 | static void warn_about_implicit_typename_lookup PARAMS ((tree, tree)); | |
156 | static int walk_namespaces_r PARAMS ((tree, walk_namespaces_fn, void *)); | |
157 | static int walk_globals_r PARAMS ((tree, void *)); | |
158 | static void add_decl_to_level PARAMS ((tree, struct binding_level *)); | |
159 | static tree make_label_decl PARAMS ((tree, int)); | |
160 | static void pop_label PARAMS ((tree)); | |
161 | static void pop_labels PARAMS ((tree)); | |
162 | static void maybe_deduce_size_from_array_init PARAMS ((tree, tree)); | |
163 | static void layout_var_decl PARAMS ((tree)); | |
164 | static void maybe_commonize_var PARAMS ((tree)); | |
165 | static tree check_initializer PARAMS ((tree, tree)); | |
166 | static void make_rtl_for_nonlocal_decl PARAMS ((tree, tree, const char *)); | |
167 | static void push_cp_function_context PARAMS ((struct function *)); | |
168 | static void pop_cp_function_context PARAMS ((struct function *)); | |
169 | static void mark_binding_level PARAMS ((void *)); | |
170 | static void mark_cp_function_context PARAMS ((struct function *)); | |
171 | static void mark_saved_scope PARAMS ((void *)); | |
172 | static void mark_lang_function PARAMS ((struct language_function *)); | |
173 | static void mark_stmt_tree PARAMS ((struct stmt_tree *)); | |
174 | static void save_function_data PARAMS ((tree)); | |
175 | static void check_function_type PARAMS ((tree)); | |
176 | static void destroy_local_var PARAMS ((tree)); | |
177 | static void finish_constructor_body PARAMS ((void)); | |
178 | static void finish_destructor_body PARAMS ((void)); | |
179 | static tree create_array_type_for_decl PARAMS ((tree, tree, tree)); | |
180 | static tree get_atexit_node PARAMS ((void)); | |
181 | static tree get_dso_handle_node PARAMS ((void)); | |
182 | static tree start_cleanup_fn PARAMS ((void)); | |
183 | static void end_cleanup_fn PARAMS ((void)); | |
8d08fdba | 184 | |
69ac77ce | 185 | #if defined (DEBUG_CP_BINDING_LEVELS) |
158991b7 | 186 | static void indent PARAMS ((void)); |
69ac77ce JL |
187 | #endif |
188 | ||
8d08fdba MS |
189 | /* Erroneous argument lists can use this *IFF* they do not modify it. */ |
190 | tree error_mark_list; | |
191 | ||
7f4edbcb | 192 | /* The following symbols are subsumed in the cp_global_trees array, and |
68642fb6 | 193 | listed here individually for documentation purposes. |
8d08fdba | 194 | |
7f4edbcb BS |
195 | C++ extensions |
196 | tree wchar_decl_node; | |
197 | tree void_zero_node; | |
37c46b43 | 198 | |
7f4edbcb BS |
199 | tree vtable_entry_type; |
200 | tree delta_type_node; | |
201 | #if 0 | |
202 | Old rtti stuff. | |
203 | tree __baselist_desc_type_node; | |
204 | tree __i_desc_type_node, __m_desc_type_node; | |
205 | tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type; | |
946dc1c8 | 206 | #endif |
7f4edbcb BS |
207 | tree __t_desc_type_node; |
208 | #if 0 | |
209 | tree __tp_desc_type_node; | |
210 | #endif | |
db1147b2 NS |
211 | tree ti_desc_type_node; |
212 | tree bltn_desc_type_node, ptr_desc_type_node, ref_desc_type_node; | |
213 | tree ary_desc_type_node, func_desc_type_node, enum_desc_type_node; | |
214 | tree class_desc_type_node, si_class_desc_type_node, vmi_class_desc_type_node; | |
215 | tree ptmd_desc_type_node; | |
216 | tree base_desc_type_node; | |
7f4edbcb BS |
217 | #if 0 |
218 | Not needed yet? May be needed one day? | |
219 | tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type; | |
220 | tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type; | |
221 | tree __ptmf_desc_array_type, __ptmd_desc_array_type; | |
946dc1c8 | 222 | #endif |
8d08fdba | 223 | |
7f4edbcb BS |
224 | tree class_star_type_node; |
225 | tree class_type_node, record_type_node, union_type_node, enum_type_node; | |
226 | tree unknown_type_node; | |
8d08fdba | 227 | |
7f4edbcb | 228 | Array type `vtable_entry_type[]' |
8d08fdba | 229 | |
7f4edbcb BS |
230 | tree vtbl_type_node; |
231 | tree vtbl_ptr_type_node; | |
8d08fdba | 232 | |
7f4edbcb | 233 | Nnamespace std |
8d08fdba | 234 | |
7f4edbcb | 235 | tree std_node; |
8d08fdba | 236 | |
7f4edbcb BS |
237 | A FUNCTION_DECL which can call `abort'. Not necessarily the |
238 | one that the user will declare, but sufficient to be called | |
239 | by routines that want to abort the program. | |
8d08fdba | 240 | |
7f4edbcb | 241 | tree abort_fndecl; |
8d08fdba | 242 | |
7f4edbcb | 243 | The FUNCTION_DECL for the default `::operator delete'. |
2986ae00 | 244 | |
7f4edbcb | 245 | tree global_delete_fndecl; |
8d08fdba | 246 | |
7f4edbcb | 247 | Used by RTTI |
db1147b2 NS |
248 | tree type_info_type_node, tinfo_decl_id, tinfo_decl_type; |
249 | tree tinfo_var_id; | |
8d08fdba | 250 | |
7f4edbcb | 251 | */ |
8d08fdba | 252 | |
7f4edbcb | 253 | tree cp_global_trees[CPTI_MAX]; |
8d08fdba | 254 | |
2c73f9f5 | 255 | /* Indicates that there is a type value in some namespace, although |
7f4edbcb | 256 | that is not necessarily in scope at the moment. */ |
2c73f9f5 ML |
257 | |
258 | static tree global_type_node; | |
259 | ||
7f4edbcb | 260 | /* Namespace std. */ |
0dde4175 | 261 | int in_std; |
6633d636 | 262 | |
3e3f722c ML |
263 | /* Expect only namespace names now. */ |
264 | static int only_namespace_names; | |
265 | ||
8d08fdba MS |
266 | /* If original DECL_RESULT of current function was a register, |
267 | but due to being an addressable named return value, would up | |
268 | on the stack, this variable holds the named return value's | |
269 | original location. */ | |
8d08fdba | 270 | |
4519c0a8 | 271 | #define original_result_rtx cp_function_chain->x_result_rtx |
8d08fdba | 272 | |
e349ee73 MS |
273 | struct named_label_list |
274 | { | |
275 | struct binding_level *binding_level; | |
276 | tree names_in_scope; | |
277 | tree label_decl; | |
9c0758dd | 278 | const char *filename_o_goto; |
e349ee73 MS |
279 | int lineno_o_goto; |
280 | struct named_label_list *next; | |
281 | }; | |
282 | ||
ed5511d9 MM |
283 | /* Used only for jumps to as-yet undefined labels, since jumps to |
284 | defined labels can have their validity checked by stmt.c. */ | |
8d08fdba | 285 | |
ed5511d9 | 286 | #define named_label_uses cp_function_chain->x_named_label_uses |
8d08fdba MS |
287 | |
288 | /* A list of objects which have constructors or destructors | |
289 | which reside in the global scope. The decl is stored in | |
290 | the TREE_VALUE slot and the initializer is stored | |
291 | in the TREE_PURPOSE slot. */ | |
292 | tree static_aggregates; | |
293 | ||
8d08fdba MS |
294 | /* -- end of C++ */ |
295 | ||
81b3411c | 296 | /* A node for the integer constants 2, and 3. */ |
d11ad92e | 297 | |
81b3411c | 298 | tree integer_two_node, integer_three_node; |
8d08fdba | 299 | |
8d08fdba MS |
300 | /* Parsing a function declarator leaves here a chain of structure |
301 | and enum types declared in the parmlist. */ | |
302 | ||
303 | static tree last_function_parm_tags; | |
304 | ||
8d08fdba | 305 | /* Similar, for last_function_parm_tags. */ |
9cd64686 | 306 | tree last_function_parms; |
8d08fdba MS |
307 | static tree current_function_parm_tags; |
308 | ||
309 | /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function | |
310 | that have names. Here so we can clear out their names' definitions | |
acef433b MM |
311 | at the end of the function. The TREE_VALUE is a LABEL_DECL; the |
312 | TREE_PURPOSE is the previous binding of the label. */ | |
8d08fdba | 313 | |
4519c0a8 | 314 | #define named_labels cp_function_chain->x_named_labels |
8d08fdba | 315 | |
8d08fdba MS |
316 | /* The FUNCTION_DECL for the function currently being compiled, |
317 | or 0 if between functions. */ | |
318 | tree current_function_decl; | |
319 | ||
8d08fdba MS |
320 | /* Set to 0 at beginning of a function definition, and whenever |
321 | a label (case or named) is defined. Set to value of expression | |
322 | returned from function when that value can be transformed into | |
323 | a named return value. */ | |
324 | ||
325 | tree current_function_return_value; | |
326 | ||
83309c26 | 327 | /* Nonzero means use the ISO C99 dialect of C. */ |
68642fb6 | 328 | |
83309c26 | 329 | int flag_isoc99; |
68642fb6 | 330 | |
8d08fdba MS |
331 | /* Nonzero means give `double' the same size as `float'. */ |
332 | ||
333 | extern int flag_short_double; | |
334 | ||
335 | /* Nonzero means don't recognize any builtin functions. */ | |
336 | ||
337 | extern int flag_no_builtin; | |
338 | ||
00595019 MS |
339 | /* Nonzero means don't recognize the non-ANSI builtin functions. |
340 | -ansi sets this. */ | |
341 | ||
342 | extern int flag_no_nonansi_builtin; | |
343 | ||
8d08fdba | 344 | /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes) |
e92cc029 | 345 | objects. */ |
8d08fdba MS |
346 | extern int flag_huge_objects; |
347 | ||
348 | /* Nonzero if we want to conserve space in the .o files. We do this | |
349 | by putting uninitialized data and runtime initialized data into | |
ddd5a7c1 | 350 | .common instead of .data at the expense of not flagging multiple |
8d08fdba MS |
351 | definitions. */ |
352 | extern int flag_conserve_space; | |
8d08fdba | 353 | \f |
51c184be | 354 | /* C and C++ flags are in decl2.c. */ |
8d08fdba | 355 | |
51c184be | 356 | /* Flag used when debugging spew.c */ |
8d08fdba MS |
357 | |
358 | extern int spew_debug; | |
359 | ||
e92cc029 MS |
360 | /* A expression of value 0 with the same precision as a sizetype |
361 | node, but signed. */ | |
362 | tree signed_size_zero_node; | |
363 | ||
0c8feefe MM |
364 | /* The name of the anonymous namespace, throughout this translation |
365 | unit. */ | |
366 | tree anonymous_namespace_name; | |
367 | ||
8d08fdba MS |
368 | \f |
369 | /* For each binding contour we allocate a binding_level structure | |
e92cc029 MS |
370 | which records the names defined in that contour. |
371 | Contours include: | |
372 | 0) the global one | |
373 | 1) one for each function definition, | |
374 | where internal declarations of the parameters appear. | |
375 | 2) one for each compound statement, | |
376 | to record its declarations. | |
377 | ||
378 | The current meaning of a name can be found by searching the levels | |
379 | from the current one out to the global one. | |
380 | ||
381 | Off to the side, may be the class_binding_level. This exists only | |
382 | to catch class-local declarations. It is otherwise nonexistent. | |
383 | ||
384 | Also there may be binding levels that catch cleanups that must be | |
d8f8dca1 MM |
385 | run when exceptions occur. Thus, to see whether a name is bound in |
386 | the current scope, it is not enough to look in the | |
387 | CURRENT_BINDING_LEVEL. You should use lookup_name_current_level | |
388 | instead. */ | |
8d08fdba MS |
389 | |
390 | /* Note that the information in the `names' component of the global contour | |
391 | is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */ | |
392 | ||
393 | struct binding_level | |
394 | { | |
395 | /* A chain of _DECL nodes for all variables, constants, functions, | |
e92cc029 | 396 | and typedef types. These are in the reverse of the order |
f181d4ae MM |
397 | supplied. There may be OVERLOADs on this list, too, but they |
398 | are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */ | |
8d08fdba MS |
399 | tree names; |
400 | ||
e92cc029 MS |
401 | /* A list of structure, union and enum definitions, for looking up |
402 | tag names. | |
403 | It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name, | |
404 | or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE, | |
405 | or ENUMERAL_TYPE node. | |
406 | ||
407 | C++: the TREE_VALUE nodes can be simple types for | |
408 | component_bindings. */ | |
8d08fdba MS |
409 | tree tags; |
410 | ||
2c73f9f5 ML |
411 | /* A list of USING_DECL nodes. */ |
412 | tree usings; | |
413 | ||
ea9635c7 ML |
414 | /* A list of used namespaces. PURPOSE is the namespace, |
415 | VALUE the common ancestor with this binding_level's namespace. */ | |
416 | tree using_directives; | |
417 | ||
f181d4ae MM |
418 | /* If this binding level is the binding level for a class, then |
419 | class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node | |
420 | is the name of an entity bound in the class; the TREE_VALUE is | |
421 | the IDENTIFIER_CLASS_VALUE before we entered the class. Thus, | |
422 | when leaving class scope, we can restore the | |
d8f8dca1 MM |
423 | IDENTIFIER_CLASS_VALUE by walking this list. The TREE_TYPE is |
424 | the DECL bound by this name in the class. */ | |
8d08fdba MS |
425 | tree class_shadowed; |
426 | ||
f181d4ae MM |
427 | /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and |
428 | is used for all binding levels. */ | |
8d08fdba MS |
429 | tree type_shadowed; |
430 | ||
acef433b MM |
431 | /* A TREE_LIST. Each TREE_VALUE is the LABEL_DECL for a local |
432 | label in this scope. The TREE_PURPOSE is the previous value of | |
433 | the IDENTIFIER_LABEL VALUE. */ | |
434 | tree shadowed_labels; | |
435 | ||
8d08fdba MS |
436 | /* For each level (except not the global one), |
437 | a chain of BLOCK nodes for all the levels | |
438 | that were entered and exited one level down. */ | |
439 | tree blocks; | |
440 | ||
441 | /* The BLOCK node for this level, if one has been preallocated. | |
442 | If 0, the BLOCK is allocated (if needed) when the level is popped. */ | |
443 | tree this_block; | |
444 | ||
70adf8a9 JM |
445 | /* The _TYPE node for this level, if parm_flag == 2. */ |
446 | tree this_class; | |
447 | ||
8d08fdba MS |
448 | /* The binding level which this one is contained in (inherits from). */ |
449 | struct binding_level *level_chain; | |
450 | ||
f30432d7 | 451 | /* List of decls in `names' that have incomplete |
8d08fdba | 452 | structure or union types. */ |
f30432d7 | 453 | tree incomplete; |
8d08fdba | 454 | |
8d6e462b | 455 | /* List of VAR_DECLS saved from a previous for statement. |
abc95ed3 | 456 | These would be dead in ANSI-conforming code, but might |
f181d4ae MM |
457 | be referenced in ARM-era code. These are stored in a |
458 | TREE_LIST; the TREE_VALUE is the actual declaration. */ | |
8d6e462b PB |
459 | tree dead_vars_from_for; |
460 | ||
8d08fdba MS |
461 | /* 1 for the level that holds the parameters of a function. |
462 | 2 for the level that holds a class declaration. | |
463 | 3 for levels that hold parameter declarations. */ | |
464 | unsigned parm_flag : 4; | |
465 | ||
466 | /* 1 means make a BLOCK for this level regardless of all else. | |
467 | 2 for temporary binding contours created by the compiler. */ | |
468 | unsigned keep : 3; | |
469 | ||
470 | /* Nonzero if this level "doesn't exist" for tags. */ | |
471 | unsigned tag_transparent : 1; | |
472 | ||
473 | /* Nonzero if this level can safely have additional | |
474 | cleanup-needing variables added to it. */ | |
475 | unsigned more_cleanups_ok : 1; | |
476 | unsigned have_cleanups : 1; | |
477 | ||
5566b478 MS |
478 | /* Nonzero if this level is for storing the decls for template |
479 | parameters and generic decls; these decls will be discarded and | |
480 | replaced with a TEMPLATE_DECL. */ | |
8d08fdba MS |
481 | unsigned pseudo_global : 1; |
482 | ||
a9aedbc2 MS |
483 | /* This is set for a namespace binding level. */ |
484 | unsigned namespace_p : 1; | |
485 | ||
2ee887f2 | 486 | /* True if this level is that of a for-statement where we need to |
d22c8596 | 487 | worry about ambiguous (ARM or ANSI) scope rules. */ |
8d6e462b PB |
488 | unsigned is_for_scope : 1; |
489 | ||
227cf171 JM |
490 | /* True if this level corresponds to an EH region, as for a try block. */ |
491 | unsigned eh_region : 1; | |
492 | ||
493 | /* One bit left for this word. */ | |
8d08fdba MS |
494 | |
495 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
496 | /* Binding depth at which this level began. */ | |
497 | unsigned binding_depth; | |
498 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
499 | }; | |
500 | ||
501 | #define NULL_BINDING_LEVEL ((struct binding_level *) NULL) | |
68642fb6 | 502 | |
8f032717 | 503 | /* The binding level currently in effect. */ |
8d08fdba | 504 | |
a8f73d4b | 505 | #define current_binding_level \ |
01d939e8 | 506 | (cfun \ |
a8f73d4b MM |
507 | ? cp_function_chain->bindings \ |
508 | : scope_chain->bindings) | |
8d08fdba MS |
509 | |
510 | /* The binding level of the current class, if any. */ | |
511 | ||
9cd64686 | 512 | #define class_binding_level scope_chain->class_bindings |
8d08fdba | 513 | |
8d08fdba MS |
514 | /* A chain of binding_level structures awaiting reuse. */ |
515 | ||
516 | static struct binding_level *free_binding_level; | |
517 | ||
518 | /* The outermost binding level, for names of file scope. | |
519 | This is created when the compiler is started and exists | |
520 | through the entire run. */ | |
521 | ||
522 | static struct binding_level *global_binding_level; | |
523 | ||
8d08fdba MS |
524 | /* Nonzero means unconditionally make a BLOCK for the next level pushed. */ |
525 | ||
526 | static int keep_next_level_flag; | |
527 | ||
528 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
529 | static int binding_depth = 0; | |
530 | static int is_class_level = 0; | |
531 | ||
532 | static void | |
533 | indent () | |
534 | { | |
535 | register unsigned i; | |
536 | ||
537 | for (i = 0; i < binding_depth*2; i++) | |
538 | putc (' ', stderr); | |
539 | } | |
540 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
541 | ||
158991b7 | 542 | static tree pushdecl_with_scope PARAMS ((tree, struct binding_level *)); |
8d08fdba MS |
543 | |
544 | static void | |
545 | push_binding_level (newlevel, tag_transparent, keep) | |
546 | struct binding_level *newlevel; | |
547 | int tag_transparent, keep; | |
548 | { | |
549 | /* Add this level to the front of the chain (stack) of levels that | |
550 | are active. */ | |
acef433b | 551 | bzero ((char*) newlevel, sizeof (struct binding_level)); |
8f032717 | 552 | newlevel->level_chain = current_binding_level; |
8d08fdba MS |
553 | current_binding_level = newlevel; |
554 | newlevel->tag_transparent = tag_transparent; | |
555 | newlevel->more_cleanups_ok = 1; | |
227cf171 JM |
556 | |
557 | /* We are called before expand_start_bindings, but after | |
558 | expand_eh_region_start for a try block; so we check this now, | |
559 | before the EH block is covered up. */ | |
560 | newlevel->eh_region = is_eh_region (); | |
561 | ||
8d08fdba MS |
562 | newlevel->keep = keep; |
563 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
564 | newlevel->binding_depth = binding_depth; | |
565 | indent (); | |
566 | fprintf (stderr, "push %s level 0x%08x line %d\n", | |
567 | (is_class_level) ? "class" : "block", newlevel, lineno); | |
568 | is_class_level = 0; | |
569 | binding_depth++; | |
570 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
571 | } | |
572 | ||
8f032717 MM |
573 | /* Find the innermost enclosing class scope, and reset |
574 | CLASS_BINDING_LEVEL appropriately. */ | |
575 | ||
576 | static void | |
577 | find_class_binding_level () | |
578 | { | |
579 | struct binding_level *level = current_binding_level; | |
580 | ||
581 | while (level && level->parm_flag != 2) | |
582 | level = level->level_chain; | |
583 | if (level && level->parm_flag == 2) | |
584 | class_binding_level = level; | |
585 | else | |
586 | class_binding_level = 0; | |
587 | } | |
588 | ||
8d08fdba MS |
589 | static void |
590 | pop_binding_level () | |
591 | { | |
8d08fdba MS |
592 | if (global_binding_level) |
593 | { | |
2c73f9f5 | 594 | /* Cannot pop a level, if there are none left to pop. */ |
8d08fdba MS |
595 | if (current_binding_level == global_binding_level) |
596 | my_friendly_abort (123); | |
597 | } | |
598 | /* Pop the current level, and free the structure for reuse. */ | |
599 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
600 | binding_depth--; | |
601 | indent (); | |
602 | fprintf (stderr, "pop %s level 0x%08x line %d\n", | |
603 | (is_class_level) ? "class" : "block", | |
604 | current_binding_level, lineno); | |
605 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
606 | { |
607 | indent (); | |
608 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
609 | } | |
8d08fdba MS |
610 | is_class_level = 0; |
611 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
612 | { | |
613 | register struct binding_level *level = current_binding_level; | |
614 | current_binding_level = current_binding_level->level_chain; | |
615 | level->level_chain = free_binding_level; | |
616 | #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
617 | if (level->binding_depth != binding_depth) | |
618 | abort (); | |
619 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
8f032717 MM |
620 | free_binding_level = level; |
621 | find_class_binding_level (); | |
8d08fdba MS |
622 | } |
623 | } | |
a9aedbc2 MS |
624 | |
625 | static void | |
626 | suspend_binding_level () | |
627 | { | |
628 | if (class_binding_level) | |
629 | current_binding_level = class_binding_level; | |
630 | ||
631 | if (global_binding_level) | |
632 | { | |
2c73f9f5 | 633 | /* Cannot suspend a level, if there are none left to suspend. */ |
a9aedbc2 MS |
634 | if (current_binding_level == global_binding_level) |
635 | my_friendly_abort (123); | |
636 | } | |
637 | /* Suspend the current level. */ | |
638 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
639 | binding_depth--; | |
640 | indent (); | |
641 | fprintf (stderr, "suspend %s level 0x%08x line %d\n", | |
642 | (is_class_level) ? "class" : "block", | |
643 | current_binding_level, lineno); | |
644 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
645 | { |
646 | indent (); | |
647 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
648 | } | |
a9aedbc2 MS |
649 | is_class_level = 0; |
650 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
8f032717 MM |
651 | current_binding_level = current_binding_level->level_chain; |
652 | find_class_binding_level (); | |
a9aedbc2 MS |
653 | } |
654 | ||
824b9a4c | 655 | static void |
a9aedbc2 MS |
656 | resume_binding_level (b) |
657 | struct binding_level *b; | |
658 | { | |
2c73f9f5 ML |
659 | /* Resuming binding levels is meant only for namespaces, |
660 | and those cannot nest into classes. */ | |
661 | my_friendly_assert(!class_binding_level, 386); | |
662 | /* Also, resuming a non-directly nested namespace is a no-no. */ | |
663 | my_friendly_assert(b->level_chain == current_binding_level, 386); | |
a9aedbc2 MS |
664 | current_binding_level = b; |
665 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
666 | b->binding_depth = binding_depth; | |
667 | indent (); | |
668 | fprintf (stderr, "resume %s level 0x%08x line %d\n", | |
669 | (is_class_level) ? "class" : "block", b, lineno); | |
670 | is_class_level = 0; | |
671 | binding_depth++; | |
672 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
673 | } | |
8d08fdba | 674 | \f |
cffa8729 MS |
675 | /* Create a new `struct binding_level'. */ |
676 | ||
677 | static | |
678 | struct binding_level * | |
679 | make_binding_level () | |
680 | { | |
681 | /* NOSTRICT */ | |
682 | return (struct binding_level *) xmalloc (sizeof (struct binding_level)); | |
683 | } | |
684 | ||
8d08fdba MS |
685 | /* Nonzero if we are currently in the global binding level. */ |
686 | ||
687 | int | |
688 | global_bindings_p () | |
689 | { | |
690 | return current_binding_level == global_binding_level; | |
691 | } | |
692 | ||
8f032717 MM |
693 | /* Return the innermost binding level that is not for a class scope. */ |
694 | ||
695 | static struct binding_level * | |
696 | innermost_nonclass_level () | |
697 | { | |
698 | struct binding_level *b; | |
699 | ||
700 | b = current_binding_level; | |
701 | while (b->parm_flag == 2) | |
702 | b = b->level_chain; | |
703 | ||
704 | return b; | |
705 | } | |
706 | ||
a9aedbc2 MS |
707 | /* Nonzero if we are currently in a toplevel binding level. This |
708 | means either the global binding level or a namespace in a toplevel | |
8f032717 MM |
709 | binding level. Since there are no non-toplevel namespace levels, |
710 | this really means any namespace or pseudo-global level. We also | |
711 | include a class whose context is toplevel. */ | |
a9aedbc2 MS |
712 | |
713 | int | |
714 | toplevel_bindings_p () | |
715 | { | |
8f032717 MM |
716 | struct binding_level *b = innermost_nonclass_level (); |
717 | ||
718 | return b->namespace_p || b->pseudo_global; | |
a9aedbc2 MS |
719 | } |
720 | ||
8f032717 MM |
721 | /* Nonzero if this is a namespace scope, or if we are defining a class |
722 | which is itself at namespace scope, or whose enclosing class is | |
723 | such a class, etc. */ | |
a9aedbc2 | 724 | |
7bdbfa05 | 725 | int |
a9aedbc2 MS |
726 | namespace_bindings_p () |
727 | { | |
8f032717 MM |
728 | struct binding_level *b = innermost_nonclass_level (); |
729 | ||
730 | return b->namespace_p; | |
a9aedbc2 MS |
731 | } |
732 | ||
f1dedc31 MM |
733 | /* If KEEP is non-zero, make a BLOCK node for the next binding level, |
734 | unconditionally. Otherwise, use the normal logic to decide whether | |
735 | or not to create a BLOCK. */ | |
736 | ||
8d08fdba | 737 | void |
f1dedc31 MM |
738 | keep_next_level (keep) |
739 | int keep; | |
8d08fdba | 740 | { |
f1dedc31 | 741 | keep_next_level_flag = keep; |
8d08fdba MS |
742 | } |
743 | ||
744 | /* Nonzero if the current level needs to have a BLOCK made. */ | |
745 | ||
746 | int | |
747 | kept_level_p () | |
748 | { | |
749 | return (current_binding_level->blocks != NULL_TREE | |
750 | || current_binding_level->keep | |
751 | || current_binding_level->names != NULL_TREE | |
752 | || (current_binding_level->tags != NULL_TREE | |
753 | && !current_binding_level->tag_transparent)); | |
754 | } | |
755 | ||
8d08fdba MS |
756 | void |
757 | declare_pseudo_global_level () | |
758 | { | |
759 | current_binding_level->pseudo_global = 1; | |
760 | } | |
761 | ||
824b9a4c | 762 | static void |
a9aedbc2 MS |
763 | declare_namespace_level () |
764 | { | |
765 | current_binding_level->namespace_p = 1; | |
766 | } | |
767 | ||
8d08fdba MS |
768 | int |
769 | pseudo_global_level_p () | |
770 | { | |
9188c363 | 771 | return current_binding_level->pseudo_global; |
8d08fdba MS |
772 | } |
773 | ||
774 | void | |
775 | set_class_shadows (shadows) | |
776 | tree shadows; | |
777 | { | |
778 | class_binding_level->class_shadowed = shadows; | |
779 | } | |
780 | ||
781 | /* Enter a new binding level. | |
782 | If TAG_TRANSPARENT is nonzero, do so only for the name space of variables, | |
783 | not for that of tags. */ | |
784 | ||
785 | void | |
786 | pushlevel (tag_transparent) | |
787 | int tag_transparent; | |
788 | { | |
b35d4555 | 789 | struct binding_level *newlevel; |
8d08fdba | 790 | |
01d939e8 | 791 | if (cfun && !doing_semantic_analysis_p ()) |
b35d4555 | 792 | return; |
8d08fdba | 793 | |
b35d4555 | 794 | /* Reuse or create a struct for this binding level. */ |
8d08fdba MS |
795 | #if defined(DEBUG_CP_BINDING_LEVELS) |
796 | if (0) | |
797 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
798 | if (free_binding_level) | |
799 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
800 | { | |
801 | newlevel = free_binding_level; | |
802 | free_binding_level = free_binding_level->level_chain; | |
803 | } | |
804 | else | |
acef433b | 805 | newlevel = make_binding_level (); |
cffa8729 | 806 | |
8d08fdba MS |
807 | push_binding_level (newlevel, tag_transparent, keep_next_level_flag); |
808 | GNU_xref_start_scope ((HOST_WIDE_INT) newlevel); | |
809 | keep_next_level_flag = 0; | |
810 | } | |
811 | ||
5566b478 | 812 | void |
8d6e462b PB |
813 | note_level_for_for () |
814 | { | |
815 | current_binding_level->is_for_scope = 1; | |
816 | } | |
817 | ||
f181d4ae MM |
818 | /* For a binding between a name and an entity at a block scope, |
819 | this is the `struct binding_level' for the block. */ | |
820 | #define BINDING_LEVEL(NODE) \ | |
c7a932b1 | 821 | (((struct tree_binding*)NODE)->scope.level) |
f181d4ae | 822 | |
f181d4ae MM |
823 | /* Make DECL the innermost binding for ID. The LEVEL is the binding |
824 | level at which this declaration is being bound. */ | |
825 | ||
826 | static void | |
827 | push_binding (id, decl, level) | |
828 | tree id; | |
829 | tree decl; | |
830 | struct binding_level* level; | |
831 | { | |
832 | tree binding; | |
833 | ||
87e3dbc9 | 834 | binding = make_node (CPLUS_BINDING); |
f181d4ae MM |
835 | |
836 | /* Now, fill in the binding information. */ | |
837 | BINDING_VALUE (binding) = decl; | |
d8f8dca1 | 838 | BINDING_TYPE (binding) = NULL_TREE; |
f181d4ae | 839 | BINDING_LEVEL (binding) = level; |
8f032717 | 840 | INHERITED_VALUE_BINDING_P (binding) = 0; |
f181d4ae | 841 | LOCAL_BINDING_P (binding) = (level != class_binding_level); |
87e3dbc9 | 842 | BINDING_HAS_LEVEL_P (binding) = 1; |
f181d4ae | 843 | |
c45df9c1 | 844 | /* And put it on the front of the list of bindings for ID. */ |
f181d4ae MM |
845 | TREE_CHAIN (binding) = IDENTIFIER_BINDING (id); |
846 | IDENTIFIER_BINDING (id) = binding; | |
847 | } | |
848 | ||
d8f8dca1 MM |
849 | /* ID is already bound in the current scope. But, DECL is an |
850 | additional binding for ID in the same scope. This is the `struct | |
851 | stat' hack whereby a non-typedef class-name or enum-name can be | |
852 | bound at the same level as some other kind of entity. It's the | |
853 | responsibility of the caller to check that inserting this name is | |
8f032717 MM |
854 | legal here. Returns nonzero if the new binding was successful. */ |
855 | static int | |
d8f8dca1 MM |
856 | add_binding (id, decl) |
857 | tree id; | |
858 | tree decl; | |
859 | { | |
860 | tree binding = IDENTIFIER_BINDING (id); | |
8f032717 | 861 | int ok = 1; |
d8f8dca1 MM |
862 | |
863 | if (TREE_CODE (decl) == TYPE_DECL && DECL_ARTIFICIAL (decl)) | |
864 | /* The new name is the type name. */ | |
865 | BINDING_TYPE (binding) = decl; | |
8f032717 MM |
866 | else if (!BINDING_VALUE (binding)) |
867 | /* This situation arises when push_class_level_binding moves an | |
868 | inherited type-binding out of the way to make room for a new | |
869 | value binding. */ | |
870 | BINDING_VALUE (binding) = decl; | |
871 | else if (TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL | |
872 | && DECL_ARTIFICIAL (BINDING_VALUE (binding))) | |
873 | { | |
874 | /* The old binding was a type name. It was placed in | |
875 | BINDING_VALUE because it was thought, at the point it was | |
876 | declared, to be the only entity with such a name. Move the | |
877 | type name into the type slot; it is now hidden by the new | |
878 | binding. */ | |
d8f8dca1 MM |
879 | BINDING_TYPE (binding) = BINDING_VALUE (binding); |
880 | BINDING_VALUE (binding) = decl; | |
8f032717 | 881 | INHERITED_VALUE_BINDING_P (binding) = 0; |
d8f8dca1 | 882 | } |
263505af MM |
883 | else if (TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL |
884 | && TREE_CODE (decl) == TYPE_DECL | |
885 | && DECL_NAME (decl) == DECL_NAME (BINDING_VALUE (binding)) | |
886 | && same_type_p (TREE_TYPE (decl), | |
887 | TREE_TYPE (BINDING_VALUE (binding)))) | |
888 | /* We have two typedef-names, both naming the same type to have | |
889 | the same name. This is OK because of: | |
890 | ||
891 | [dcl.typedef] | |
892 | ||
893 | In a given scope, a typedef specifier can be used to redefine | |
894 | the name of any type declared in that scope to refer to the | |
895 | type to which it already refers. */ | |
896 | ok = 0; | |
8f032717 MM |
897 | else |
898 | { | |
899 | cp_error ("declaration of `%#D'", decl); | |
900 | cp_error_at ("conflicts with previous declaration `%#D'", | |
901 | BINDING_VALUE (binding)); | |
902 | ok = 0; | |
903 | } | |
904 | ||
905 | return ok; | |
d8f8dca1 MM |
906 | } |
907 | ||
cfe507be MM |
908 | /* Add DECL to the list of things declared in B. */ |
909 | ||
910 | static void | |
911 | add_decl_to_level (decl, b) | |
912 | tree decl; | |
913 | struct binding_level *b; | |
914 | { | |
cfe507be MM |
915 | /* We build up the list in reverse order, and reverse it later if |
916 | necessary. */ | |
917 | TREE_CHAIN (decl) = b->names; | |
918 | b->names = decl; | |
919 | } | |
920 | ||
921 | /* Bind DECL to ID in the current_binding_level, assumed to be a local | |
922 | binding level. If PUSH_USING is set in FLAGS, we know that DECL | |
923 | doesn't really belong to this binding level, that it got here | |
924 | through a using-declaration. */ | |
f181d4ae MM |
925 | |
926 | void | |
0034cf72 | 927 | push_local_binding (id, decl, flags) |
f181d4ae MM |
928 | tree id; |
929 | tree decl; | |
0034cf72 | 930 | int flags; |
f181d4ae | 931 | { |
8f032717 MM |
932 | struct binding_level *b; |
933 | ||
934 | /* Skip over any local classes. This makes sense if we call | |
935 | push_local_binding with a friend decl of a local class. */ | |
936 | b = current_binding_level; | |
937 | while (b->parm_flag == 2) | |
938 | b = b->level_chain; | |
f181d4ae | 939 | |
d8f8dca1 | 940 | if (lookup_name_current_level (id)) |
8f032717 MM |
941 | { |
942 | /* Supplement the existing binding. */ | |
943 | if (!add_binding (id, decl)) | |
944 | /* It didn't work. Something else must be bound at this | |
945 | level. Do not add DECL to the list of things to pop | |
946 | later. */ | |
947 | return; | |
948 | } | |
d8f8dca1 MM |
949 | else |
950 | /* Create a new binding. */ | |
8f032717 | 951 | push_binding (id, decl, b); |
f181d4ae | 952 | |
0034cf72 | 953 | if (TREE_CODE (decl) == OVERLOAD || (flags & PUSH_USING)) |
a06d48ef JM |
954 | /* We must put the OVERLOAD into a TREE_LIST since the |
955 | TREE_CHAIN of an OVERLOAD is already used. Similarly for | |
956 | decls that got here through a using-declaration. */ | |
957 | decl = build_tree_list (NULL_TREE, decl); | |
958 | ||
f181d4ae MM |
959 | /* And put DECL on the list of things declared by the current |
960 | binding level. */ | |
cfe507be | 961 | add_decl_to_level (decl, b); |
f181d4ae MM |
962 | } |
963 | ||
8f032717 MM |
964 | /* Bind DECL to ID in the class_binding_level. Returns nonzero if the |
965 | binding was successful. */ | |
f181d4ae | 966 | |
8f032717 | 967 | int |
f181d4ae MM |
968 | push_class_binding (id, decl) |
969 | tree id; | |
970 | tree decl; | |
971 | { | |
8f032717 MM |
972 | int result = 1; |
973 | tree binding = IDENTIFIER_BINDING (id); | |
974 | tree context; | |
975 | ||
976 | /* Note that we declared this value so that we can issue an error if | |
977 | this an illegal redeclaration of a name already used for some | |
978 | other purpose. */ | |
979 | note_name_declared_in_class (id, decl); | |
980 | ||
981 | if (binding && BINDING_LEVEL (binding) == class_binding_level) | |
d8f8dca1 | 982 | /* Supplement the existing binding. */ |
8f032717 | 983 | result = add_binding (id, decl); |
d8f8dca1 MM |
984 | else |
985 | /* Create a new binding. */ | |
986 | push_binding (id, decl, class_binding_level); | |
987 | ||
988 | /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the | |
989 | class-level declaration. Note that we do not use DECL here | |
990 | because of the possibility of the `struct stat' hack; if DECL is | |
991 | a class-name or enum-name we might prefer a field-name, or some | |
992 | such. */ | |
993 | IDENTIFIER_CLASS_VALUE (id) = BINDING_VALUE (IDENTIFIER_BINDING (id)); | |
8f032717 MM |
994 | |
995 | /* If this is a binding from a base class, mark it as such. */ | |
996 | binding = IDENTIFIER_BINDING (id); | |
997 | if (BINDING_VALUE (binding) == decl && TREE_CODE (decl) != TREE_LIST) | |
998 | { | |
280f9385 MM |
999 | /* Any implicit typename must be from a base-class. The |
1000 | context for an implicit typename declaration is always | |
1001 | the derived class in which the lookup was done, so the checks | |
1002 | based on the context of DECL below will not trigger. */ | |
83233dca | 1003 | if (IMPLICIT_TYPENAME_TYPE_DECL_P (decl)) |
280f9385 | 1004 | INHERITED_VALUE_BINDING_P (binding) = 1; |
8f032717 MM |
1005 | else |
1006 | { | |
280f9385 MM |
1007 | if (TREE_CODE (decl) == OVERLOAD) |
1008 | context = DECL_REAL_CONTEXT (OVL_CURRENT (decl)); | |
1009 | else | |
1010 | { | |
1011 | my_friendly_assert (TREE_CODE_CLASS (TREE_CODE (decl)) == 'd', | |
1012 | 0); | |
1013 | context = DECL_REAL_CONTEXT (decl); | |
1014 | } | |
8f032717 | 1015 | |
280f9385 MM |
1016 | if (is_properly_derived_from (current_class_type, context)) |
1017 | INHERITED_VALUE_BINDING_P (binding) = 1; | |
1018 | else | |
1019 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
1020 | } | |
8f032717 MM |
1021 | } |
1022 | else if (BINDING_VALUE (binding) == decl) | |
1023 | /* We only encounter a TREE_LIST when push_class_decls detects an | |
1024 | ambiguity. Such an ambiguity can be overridden by a definition | |
1025 | in this class. */ | |
1026 | INHERITED_VALUE_BINDING_P (binding) = 1; | |
1027 | ||
1028 | return result; | |
f181d4ae MM |
1029 | } |
1030 | ||
d8f8dca1 MM |
1031 | /* Remove the binding for DECL which should be the innermost binding |
1032 | for ID. */ | |
f181d4ae | 1033 | |
68642fb6 UD |
1034 | static void |
1035 | pop_binding (id, decl) | |
f181d4ae | 1036 | tree id; |
d8f8dca1 | 1037 | tree decl; |
f181d4ae MM |
1038 | { |
1039 | tree binding; | |
68642fb6 | 1040 | |
f181d4ae MM |
1041 | if (id == NULL_TREE) |
1042 | /* It's easiest to write the loops that call this function without | |
1043 | checking whether or not the entities involved have names. We | |
1044 | get here for such an entity. */ | |
1045 | return; | |
1046 | ||
d8f8dca1 | 1047 | /* Get the innermost binding for ID. */ |
f181d4ae | 1048 | binding = IDENTIFIER_BINDING (id); |
f181d4ae | 1049 | |
d8f8dca1 MM |
1050 | /* The name should be bound. */ |
1051 | my_friendly_assert (binding != NULL_TREE, 0); | |
1052 | ||
1053 | /* The DECL will be either the ordinary binding or the type | |
1054 | binding for this identifier. Remove that binding. */ | |
1055 | if (BINDING_VALUE (binding) == decl) | |
1056 | BINDING_VALUE (binding) = NULL_TREE; | |
1057 | else if (BINDING_TYPE (binding) == decl) | |
1058 | BINDING_TYPE (binding) = NULL_TREE; | |
1059 | else | |
1060 | my_friendly_abort (0); | |
1061 | ||
1062 | if (!BINDING_VALUE (binding) && !BINDING_TYPE (binding)) | |
87e3dbc9 MM |
1063 | /* We're completely done with the innermost binding for this |
1064 | identifier. Unhook it from the list of bindings. */ | |
1065 | IDENTIFIER_BINDING (id) = TREE_CHAIN (binding); | |
f181d4ae MM |
1066 | } |
1067 | ||
acef433b MM |
1068 | /* When a label goes out of scope, check to see if that label was used |
1069 | in a valid manner, and issue any appropriate warnings or errors. */ | |
1070 | ||
1071 | static void | |
1072 | pop_label (link) | |
1073 | tree link; | |
1074 | { | |
1075 | tree label = TREE_VALUE (link); | |
1076 | ||
88848bde | 1077 | if (!processing_template_decl && doing_semantic_analysis_p ()) |
acef433b | 1078 | { |
88848bde MM |
1079 | if (DECL_INITIAL (label) == NULL_TREE) |
1080 | { | |
1081 | cp_error_at ("label `%D' used but not defined", label); | |
1082 | /* Avoid crashing later. */ | |
1083 | define_label (input_filename, 1, DECL_NAME (label)); | |
1084 | } | |
1085 | else if (warn_unused && !TREE_USED (label)) | |
1086 | cp_warning_at ("label `%D' defined but not used", label); | |
acef433b | 1087 | } |
acef433b MM |
1088 | |
1089 | SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), TREE_PURPOSE (link)); | |
1090 | } | |
1091 | ||
1092 | /* At the end of a function, all labels declared within the fucntion | |
68642fb6 | 1093 | go out of scope. BLOCK is the top-level block for the |
acef433b MM |
1094 | function. */ |
1095 | ||
1096 | static void | |
1097 | pop_labels (block) | |
1098 | tree block; | |
1099 | { | |
1100 | tree link; | |
1101 | ||
1102 | /* Clear out the definitions of all label names, since their scopes | |
1103 | end here. */ | |
1104 | for (link = named_labels; link; link = TREE_CHAIN (link)) | |
1105 | { | |
1106 | pop_label (link); | |
1107 | /* Put the labels into the "variables" of the top-level block, | |
1108 | so debugger can see them. */ | |
1109 | TREE_CHAIN (TREE_VALUE (link)) = BLOCK_VARS (block); | |
1110 | BLOCK_VARS (block) = TREE_VALUE (link); | |
1111 | } | |
1112 | ||
1113 | named_labels = NULL_TREE; | |
1114 | } | |
1115 | ||
8d08fdba MS |
1116 | /* Exit a binding level. |
1117 | Pop the level off, and restore the state of the identifier-decl mappings | |
1118 | that were in effect when this level was entered. | |
1119 | ||
1120 | If KEEP == 1, this level had explicit declarations, so | |
1121 | and create a "block" (a BLOCK node) for the level | |
1122 | to record its declarations and subblocks for symbol table output. | |
1123 | ||
8d08fdba MS |
1124 | If FUNCTIONBODY is nonzero, this level is the body of a function, |
1125 | so create a block as if KEEP were set and also clear out all | |
1126 | label names. | |
1127 | ||
1128 | If REVERSE is nonzero, reverse the order of decls before putting | |
1129 | them into the BLOCK. */ | |
1130 | ||
1131 | tree | |
1132 | poplevel (keep, reverse, functionbody) | |
1133 | int keep; | |
1134 | int reverse; | |
1135 | int functionbody; | |
1136 | { | |
1137 | register tree link; | |
1138 | /* The chain of decls was accumulated in reverse order. | |
1139 | Put it into forward order, just for cleanliness. */ | |
1140 | tree decls; | |
1141 | int tmp = functionbody; | |
b35d4555 MM |
1142 | int real_functionbody; |
1143 | tree tags; | |
1144 | tree subblocks; | |
8d08fdba MS |
1145 | tree block = NULL_TREE; |
1146 | tree decl; | |
1147 | int block_previously_created; | |
f181d4ae MM |
1148 | int leaving_for_scope; |
1149 | ||
01d939e8 | 1150 | if (cfun && !doing_semantic_analysis_p ()) |
b35d4555 MM |
1151 | return NULL_TREE; |
1152 | ||
273a708f MM |
1153 | my_friendly_assert (current_binding_level->parm_flag != 2, |
1154 | 19990916); | |
b74a0560 | 1155 | |
b35d4555 MM |
1156 | real_functionbody = (current_binding_level->keep == 2 |
1157 | ? ((functionbody = 0), tmp) : functionbody); | |
1158 | tags = functionbody >= 0 ? current_binding_level->tags : 0; | |
1159 | subblocks = functionbody >= 0 ? current_binding_level->blocks : 0; | |
1160 | ||
b74a0560 MM |
1161 | my_friendly_assert (!current_binding_level->class_shadowed, |
1162 | 19990414); | |
8d08fdba | 1163 | |
536333d4 MM |
1164 | /* We used to use KEEP == 2 to indicate that the new block should go |
1165 | at the beginning of the list of blocks at this binding level, | |
1166 | rather than the end. This hack is no longer used. */ | |
1167 | my_friendly_assert (keep == 0 || keep == 1, 0); | |
1168 | ||
8d08fdba MS |
1169 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, |
1170 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
1171 | current_binding_level->parm_flag, | |
5566b478 | 1172 | current_binding_level->keep); |
8d08fdba MS |
1173 | |
1174 | if (current_binding_level->keep == 1) | |
1175 | keep = 1; | |
1176 | ||
8d08fdba MS |
1177 | /* Get the decls in the order they were written. |
1178 | Usually current_binding_level->names is in reverse order. | |
1179 | But parameter decls were previously put in forward order. */ | |
1180 | ||
1181 | if (reverse) | |
1182 | current_binding_level->names | |
1183 | = decls = nreverse (current_binding_level->names); | |
1184 | else | |
1185 | decls = current_binding_level->names; | |
1186 | ||
1187 | /* Output any nested inline functions within this block | |
1188 | if they weren't already output. */ | |
8d08fdba MS |
1189 | for (decl = decls; decl; decl = TREE_CHAIN (decl)) |
1190 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1191 | && ! TREE_ASM_WRITTEN (decl) | |
1192 | && DECL_INITIAL (decl) != NULL_TREE | |
6060a796 MS |
1193 | && TREE_ADDRESSABLE (decl) |
1194 | && decl_function_context (decl) == current_function_decl) | |
8d08fdba MS |
1195 | { |
1196 | /* If this decl was copied from a file-scope decl | |
1197 | on account of a block-scope extern decl, | |
1198 | propagate TREE_ADDRESSABLE to the file-scope decl. */ | |
1199 | if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) | |
1200 | TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1; | |
1201 | else | |
1202 | { | |
1203 | push_function_context (); | |
1204 | output_inline_function (decl); | |
1205 | pop_function_context (); | |
1206 | } | |
1207 | } | |
1208 | ||
d9b2d9da MM |
1209 | /* When not in function-at-a-time mode, expand_end_bindings will |
1210 | warn about unused variables. But, in function-at-a-time mode | |
1211 | expand_end_bindings is not passed the list of variables in the | |
1212 | current scope, and therefore no warning is emitted. So, we | |
1213 | explicitly warn here. */ | |
1214 | if (!processing_template_decl) | |
1215 | warn_about_unused_variables (getdecls ()); | |
1216 | ||
8d08fdba MS |
1217 | /* If there were any declarations or structure tags in that level, |
1218 | or if this level is a function body, | |
1219 | create a BLOCK to record them for the life of this function. */ | |
8d08fdba MS |
1220 | block = NULL_TREE; |
1221 | block_previously_created = (current_binding_level->this_block != NULL_TREE); | |
1222 | if (block_previously_created) | |
1223 | block = current_binding_level->this_block; | |
1224 | else if (keep == 1 || functionbody) | |
1225 | block = make_node (BLOCK); | |
1226 | if (block != NULL_TREE) | |
1227 | { | |
72b7eeff MS |
1228 | if (block_previously_created) |
1229 | { | |
1230 | if (decls || tags || subblocks) | |
1231 | { | |
2af0ac28 | 1232 | if (BLOCK_VARS (block)) |
f181d4ae MM |
1233 | warning ("internal compiler error: debugging info corrupted"); |
1234 | ||
72b7eeff | 1235 | BLOCK_VARS (block) = decls; |
be99da77 MS |
1236 | |
1237 | /* We can have previous subblocks and new subblocks when | |
1238 | doing fixup_gotos with complex cleanups. We chain the new | |
1239 | subblocks onto the end of any pre-existing subblocks. */ | |
1240 | BLOCK_SUBBLOCKS (block) = chainon (BLOCK_SUBBLOCKS (block), | |
1241 | subblocks); | |
72b7eeff | 1242 | } |
72b7eeff MS |
1243 | } |
1244 | else | |
1245 | { | |
1246 | BLOCK_VARS (block) = decls; | |
72b7eeff | 1247 | BLOCK_SUBBLOCKS (block) = subblocks; |
72b7eeff | 1248 | } |
8d08fdba MS |
1249 | } |
1250 | ||
1251 | /* In each subblock, record that this is its superior. */ | |
8d08fdba MS |
1252 | if (keep >= 0) |
1253 | for (link = subblocks; link; link = TREE_CHAIN (link)) | |
1254 | BLOCK_SUPERCONTEXT (link) = block; | |
1255 | ||
f181d4ae MM |
1256 | /* We still support the old for-scope rules, whereby the variables |
1257 | in a for-init statement were in scope after the for-statement | |
1258 | ended. We only use the new rules in flag_new_for_scope is | |
1259 | nonzero. */ | |
68642fb6 | 1260 | leaving_for_scope |
f181d4ae MM |
1261 | = current_binding_level->is_for_scope && flag_new_for_scope == 1; |
1262 | ||
1263 | /* Remove declarations for all the DECLs in this level. */ | |
1264 | for (link = decls; link; link = TREE_CHAIN (link)) | |
1265 | { | |
1266 | if (leaving_for_scope && TREE_CODE (link) == VAR_DECL) | |
1267 | { | |
68642fb6 | 1268 | tree outer_binding |
f181d4ae MM |
1269 | = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (link))); |
1270 | tree ns_binding; | |
1271 | ||
1272 | if (!outer_binding) | |
1273 | ns_binding = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (link)); | |
c7dda1e3 MM |
1274 | else |
1275 | ns_binding = NULL_TREE; | |
1276 | ||
68642fb6 UD |
1277 | if (outer_binding |
1278 | && (BINDING_LEVEL (outer_binding) | |
f181d4ae MM |
1279 | == current_binding_level->level_chain)) |
1280 | /* We have something like: | |
68642fb6 | 1281 | |
f181d4ae MM |
1282 | int i; |
1283 | for (int i; ;); | |
68642fb6 | 1284 | |
f181d4ae MM |
1285 | and we are leaving the `for' scope. There's no reason to |
1286 | keep the binding of the inner `i' in this case. */ | |
d8f8dca1 | 1287 | pop_binding (DECL_NAME (link), link); |
68642fb6 UD |
1288 | else if ((outer_binding |
1289 | && (TREE_CODE (BINDING_VALUE (outer_binding)) | |
f181d4ae | 1290 | == TYPE_DECL)) |
68642fb6 | 1291 | || (ns_binding |
f181d4ae MM |
1292 | && TREE_CODE (ns_binding) == TYPE_DECL)) |
1293 | /* Here, we have something like: | |
1294 | ||
1295 | typedef int I; | |
1296 | ||
1297 | void f () { | |
1298 | for (int I; ;); | |
1299 | } | |
1300 | ||
1301 | We must pop the for-scope binding so we know what's a | |
1302 | type and what isn't. */ | |
d8f8dca1 | 1303 | pop_binding (DECL_NAME (link), link); |
e76a2646 | 1304 | else |
e76a2646 | 1305 | { |
f181d4ae MM |
1306 | /* Mark this VAR_DECL as dead so that we can tell we left it |
1307 | there only for backward compatibility. */ | |
1308 | DECL_DEAD_FOR_LOCAL (link) = 1; | |
68642fb6 | 1309 | |
f181d4ae MM |
1310 | /* Keep track of what should of have happenned when we |
1311 | popped the binding. */ | |
1312 | if (outer_binding && BINDING_VALUE (outer_binding)) | |
68642fb6 | 1313 | DECL_SHADOWED_FOR_VAR (link) |
f181d4ae MM |
1314 | = BINDING_VALUE (outer_binding); |
1315 | ||
1316 | /* Add it to the list of dead variables in the next | |
1317 | outermost binding to that we can remove these when we | |
1318 | leave that binding. */ | |
1319 | current_binding_level->level_chain->dead_vars_from_for | |
1320 | = tree_cons (NULL_TREE, link, | |
1321 | current_binding_level->level_chain-> | |
1322 | dead_vars_from_for); | |
1323 | ||
1324 | /* Although we don't pop the CPLUS_BINDING, we do clear | |
1325 | its BINDING_LEVEL since the level is going away now. */ | |
1326 | BINDING_LEVEL (IDENTIFIER_BINDING (DECL_NAME (link))) | |
1327 | = 0; | |
e76a2646 | 1328 | } |
2ee887f2 | 1329 | } |
68642fb6 | 1330 | else |
8d6e462b | 1331 | { |
f181d4ae | 1332 | /* Remove the binding. */ |
0034cf72 JM |
1333 | decl = link; |
1334 | if (TREE_CODE (decl) == TREE_LIST) | |
1335 | decl = TREE_VALUE (decl); | |
1336 | if (TREE_CODE_CLASS (TREE_CODE (decl)) == 'd') | |
1337 | pop_binding (DECL_NAME (decl), decl); | |
1338 | else if (TREE_CODE (decl) == OVERLOAD) | |
1339 | pop_binding (DECL_NAME (OVL_FUNCTION (decl)), decl); | |
68642fb6 | 1340 | else |
f181d4ae | 1341 | my_friendly_abort (0); |
8d08fdba | 1342 | } |
f181d4ae | 1343 | } |
8d08fdba | 1344 | |
f181d4ae MM |
1345 | /* Remove declarations for any `for' variables from inner scopes |
1346 | that we kept around. */ | |
1347 | for (link = current_binding_level->dead_vars_from_for; | |
1348 | link; link = TREE_CHAIN (link)) | |
d8f8dca1 | 1349 | pop_binding (DECL_NAME (TREE_VALUE (link)), TREE_VALUE (link)); |
2ee887f2 | 1350 | |
f181d4ae MM |
1351 | /* Restore the IDENTIFIER_TYPE_VALUEs. */ |
1352 | for (link = current_binding_level->type_shadowed; | |
1353 | link; link = TREE_CHAIN (link)) | |
1354 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link)); | |
acef433b MM |
1355 | |
1356 | /* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */ | |
1357 | for (link = current_binding_level->shadowed_labels; | |
68642fb6 | 1358 | link; |
acef433b MM |
1359 | link = TREE_CHAIN (link)) |
1360 | pop_label (link); | |
1361 | ||
f181d4ae MM |
1362 | /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs |
1363 | list if a `using' declaration put them there. The debugging | |
1364 | back-ends won't understand OVERLOAD, so we remove them here. | |
1365 | Because the BLOCK_VARS are (temporarily) shared with | |
1366 | CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have | |
1367 | popped all the bindings. */ | |
1368 | if (block) | |
1369 | { | |
1370 | tree* d; | |
8d6e462b | 1371 | |
a06d48ef JM |
1372 | for (d = &BLOCK_VARS (block); *d; ) |
1373 | { | |
1374 | if (TREE_CODE (*d) == TREE_LIST) | |
1375 | *d = TREE_CHAIN (*d); | |
1376 | else | |
1377 | d = &TREE_CHAIN (*d); | |
1378 | } | |
8d6e462b | 1379 | } |
8d08fdba MS |
1380 | |
1381 | /* If the level being exited is the top level of a function, | |
1382 | check over all the labels. */ | |
8d08fdba MS |
1383 | if (functionbody) |
1384 | { | |
acef433b MM |
1385 | /* Since this is the top level block of a function, the vars are |
1386 | the function's parameters. Don't leave them in the BLOCK | |
1387 | because they are found in the FUNCTION_DECL instead. */ | |
8d08fdba | 1388 | BLOCK_VARS (block) = 0; |
acef433b | 1389 | pop_labels (block); |
8d08fdba MS |
1390 | } |
1391 | ||
1392 | /* Any uses of undefined labels now operate under constraints | |
1393 | of next binding contour. */ | |
01d939e8 | 1394 | if (cfun) |
a8f73d4b MM |
1395 | { |
1396 | struct binding_level *level_chain; | |
1397 | level_chain = current_binding_level->level_chain; | |
1398 | if (level_chain) | |
1399 | { | |
1400 | struct named_label_list *labels; | |
1401 | for (labels = named_label_uses; labels; labels = labels->next) | |
1402 | if (labels->binding_level == current_binding_level) | |
1403 | { | |
1404 | labels->binding_level = level_chain; | |
1405 | labels->names_in_scope = level_chain->names; | |
1406 | } | |
1407 | } | |
1408 | } | |
8d08fdba MS |
1409 | |
1410 | tmp = current_binding_level->keep; | |
1411 | ||
1412 | pop_binding_level (); | |
1413 | if (functionbody) | |
1414 | DECL_INITIAL (current_function_decl) = block; | |
1415 | else if (block) | |
1416 | { | |
1417 | if (!block_previously_created) | |
1418 | current_binding_level->blocks | |
1419 | = chainon (current_binding_level->blocks, block); | |
1420 | } | |
1421 | /* If we did not make a block for the level just exited, | |
1422 | any blocks made for inner levels | |
1423 | (since they cannot be recorded as subblocks in that level) | |
1424 | must be carried forward so they will later become subblocks | |
1425 | of something else. */ | |
1426 | else if (subblocks) | |
536333d4 MM |
1427 | current_binding_level->blocks |
1428 | = chainon (current_binding_level->blocks, subblocks); | |
8d08fdba | 1429 | |
d9b2d9da MM |
1430 | /* Each and every BLOCK node created here in `poplevel' is important |
1431 | (e.g. for proper debugging information) so if we created one | |
1432 | earlier, mark it as "used". */ | |
1433 | if (block) | |
1434 | TREE_USED (block) = 1; | |
1435 | ||
8d08fdba | 1436 | /* Take care of compiler's internal binding structures. */ |
a4443a08 | 1437 | if (tmp == 2) |
8d08fdba | 1438 | { |
d9b2d9da MM |
1439 | tree scope_stmts; |
1440 | ||
68642fb6 | 1441 | scope_stmts |
d9b2d9da | 1442 | = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/1); |
8d08fdba | 1443 | if (block) |
d9b2d9da MM |
1444 | { |
1445 | SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmts)) = block; | |
1446 | SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmts)) = block; | |
1447 | } | |
1448 | ||
8f471b0d | 1449 | block = poplevel (keep, reverse, functionbody); |
8d08fdba MS |
1450 | } |
1451 | ||
8d08fdba MS |
1452 | return block; |
1453 | } | |
1454 | ||
1455 | /* Delete the node BLOCK from the current binding level. | |
1456 | This is used for the block inside a stmt expr ({...}) | |
1457 | so that the block can be reinserted where appropriate. */ | |
1458 | ||
1459 | void | |
1460 | delete_block (block) | |
1461 | tree block; | |
1462 | { | |
1463 | tree t; | |
1464 | if (current_binding_level->blocks == block) | |
1465 | current_binding_level->blocks = TREE_CHAIN (block); | |
1466 | for (t = current_binding_level->blocks; t;) | |
1467 | { | |
1468 | if (TREE_CHAIN (t) == block) | |
1469 | TREE_CHAIN (t) = TREE_CHAIN (block); | |
1470 | else | |
1471 | t = TREE_CHAIN (t); | |
1472 | } | |
1473 | TREE_CHAIN (block) = NULL_TREE; | |
1474 | /* Clear TREE_USED which is always set by poplevel. | |
1475 | The flag is set again if insert_block is called. */ | |
1476 | TREE_USED (block) = 0; | |
1477 | } | |
1478 | ||
1479 | /* Insert BLOCK at the end of the list of subblocks of the | |
1480 | current binding level. This is used when a BIND_EXPR is expanded, | |
1481 | to handle the BLOCK node inside the BIND_EXPR. */ | |
1482 | ||
1483 | void | |
1484 | insert_block (block) | |
1485 | tree block; | |
1486 | { | |
1487 | TREE_USED (block) = 1; | |
1488 | current_binding_level->blocks | |
1489 | = chainon (current_binding_level->blocks, block); | |
1490 | } | |
1491 | ||
8d08fdba MS |
1492 | /* Set the BLOCK node for the innermost scope |
1493 | (the one we are currently in). */ | |
1494 | ||
1495 | void | |
1496 | set_block (block) | |
1497 | register tree block; | |
1498 | { | |
1499 | current_binding_level->this_block = block; | |
1500 | } | |
1501 | ||
1502 | /* Do a pushlevel for class declarations. */ | |
e92cc029 | 1503 | |
8d08fdba MS |
1504 | void |
1505 | pushlevel_class () | |
1506 | { | |
1507 | register struct binding_level *newlevel; | |
1508 | ||
1509 | /* Reuse or create a struct for this binding level. */ | |
1510 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1511 | if (0) | |
1512 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1513 | if (free_binding_level) | |
1514 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1515 | { | |
1516 | newlevel = free_binding_level; | |
1517 | free_binding_level = free_binding_level->level_chain; | |
1518 | } | |
1519 | else | |
f181d4ae | 1520 | newlevel = make_binding_level (); |
8d08fdba MS |
1521 | |
1522 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1523 | is_class_level = 1; | |
1524 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1525 | ||
1526 | push_binding_level (newlevel, 0, 0); | |
1527 | ||
8d08fdba MS |
1528 | class_binding_level = current_binding_level; |
1529 | class_binding_level->parm_flag = 2; | |
70adf8a9 | 1530 | class_binding_level->this_class = current_class_type; |
8d08fdba MS |
1531 | } |
1532 | ||
b74a0560 | 1533 | /* ...and a poplevel for class declarations. */ |
e92cc029 | 1534 | |
273a708f | 1535 | void |
b74a0560 | 1536 | poplevel_class () |
8d08fdba MS |
1537 | { |
1538 | register struct binding_level *level = class_binding_level; | |
8d08fdba MS |
1539 | tree shadowed; |
1540 | ||
1541 | my_friendly_assert (level != 0, 354); | |
68642fb6 | 1542 | |
8d08fdba | 1543 | /* If we're leaving a toplevel class, don't bother to do the setting |
ddd5a7c1 | 1544 | of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot |
8d08fdba | 1545 | shouldn't even be used when current_class_type isn't set, and second, |
ddd5a7c1 | 1546 | if we don't touch it here, we're able to use the cache effect if the |
8d08fdba | 1547 | next time we're entering a class scope, it is the same class. */ |
b74a0560 | 1548 | if (current_class_depth != 1) |
8f032717 MM |
1549 | { |
1550 | struct binding_level* b; | |
1551 | ||
1552 | /* Clear out our IDENTIFIER_CLASS_VALUEs. */ | |
1553 | for (shadowed = level->class_shadowed; | |
1554 | shadowed; | |
1555 | shadowed = TREE_CHAIN (shadowed)) | |
1556 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = NULL_TREE; | |
68642fb6 | 1557 | |
8f032717 MM |
1558 | /* Find the next enclosing class, and recreate |
1559 | IDENTIFIER_CLASS_VALUEs appropriate for that class. */ | |
1560 | b = level->level_chain; | |
1561 | while (b && b->parm_flag != 2) | |
1562 | b = b->level_chain; | |
1563 | ||
1564 | if (b) | |
68642fb6 UD |
1565 | for (shadowed = b->class_shadowed; |
1566 | shadowed; | |
8f032717 MM |
1567 | shadowed = TREE_CHAIN (shadowed)) |
1568 | { | |
1569 | tree t; | |
1570 | ||
1571 | t = IDENTIFIER_BINDING (TREE_PURPOSE (shadowed)); | |
1572 | while (t && BINDING_LEVEL (t) != b) | |
1573 | t = TREE_CHAIN (t); | |
68642fb6 | 1574 | |
8f032717 | 1575 | if (t) |
68642fb6 | 1576 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) |
8f032717 MM |
1577 | = BINDING_VALUE (t); |
1578 | } | |
1579 | } | |
8d08fdba MS |
1580 | else |
1581 | /* Remember to save what IDENTIFIER's were bound in this scope so we | |
1582 | can recover from cache misses. */ | |
e76a2646 MS |
1583 | { |
1584 | previous_class_type = current_class_type; | |
1585 | previous_class_values = class_binding_level->class_shadowed; | |
1586 | } | |
8d08fdba MS |
1587 | for (shadowed = level->type_shadowed; |
1588 | shadowed; | |
1589 | shadowed = TREE_CHAIN (shadowed)) | |
2c73f9f5 | 1590 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed), TREE_VALUE (shadowed)); |
8d08fdba | 1591 | |
f181d4ae | 1592 | /* Remove the bindings for all of the class-level declarations. */ |
68642fb6 UD |
1593 | for (shadowed = level->class_shadowed; |
1594 | shadowed; | |
f181d4ae | 1595 | shadowed = TREE_CHAIN (shadowed)) |
d8f8dca1 | 1596 | pop_binding (TREE_PURPOSE (shadowed), TREE_TYPE (shadowed)); |
f181d4ae | 1597 | |
8d08fdba MS |
1598 | GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level, |
1599 | (HOST_WIDE_INT) class_binding_level->level_chain, | |
1600 | class_binding_level->parm_flag, | |
5566b478 | 1601 | class_binding_level->keep); |
8d08fdba | 1602 | |
38e01259 | 1603 | /* Now, pop out of the binding level which we created up in the |
8d08fdba MS |
1604 | `pushlevel_class' routine. */ |
1605 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1606 | is_class_level = 1; | |
1607 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1608 | ||
1609 | pop_binding_level (); | |
8d08fdba | 1610 | } |
8f032717 MM |
1611 | |
1612 | /* We are entering the scope of a class. Clear IDENTIFIER_CLASS_VALUE | |
1613 | for any names in enclosing classes. */ | |
1614 | ||
1615 | void | |
1616 | clear_identifier_class_values () | |
1617 | { | |
1618 | tree t; | |
1619 | ||
1620 | if (!class_binding_level) | |
1621 | return; | |
1622 | ||
1623 | for (t = class_binding_level->class_shadowed; | |
1624 | t; | |
1625 | t = TREE_CHAIN (t)) | |
1626 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (t)) = NULL_TREE; | |
1627 | } | |
1628 | ||
0aafb128 MM |
1629 | /* Returns non-zero if T is a virtual function table. */ |
1630 | ||
1631 | int | |
1632 | vtable_decl_p (t, data) | |
1633 | tree t; | |
1634 | void *data ATTRIBUTE_UNUSED; | |
1635 | { | |
1636 | return (TREE_CODE (t) == VAR_DECL && DECL_VIRTUAL_P (t)); | |
1637 | } | |
1638 | ||
1639 | /* Returns non-zero if T is a TYPE_DECL for a type with virtual | |
1640 | functions. */ | |
1641 | ||
1642 | int | |
1643 | vtype_decl_p (t, data) | |
1644 | tree t; | |
1645 | void *data ATTRIBUTE_UNUSED; | |
1646 | { | |
1647 | return (TREE_CODE (t) == TYPE_DECL | |
1648 | && TREE_TYPE (t) != error_mark_node | |
1649 | && TYPE_LANG_SPECIFIC (TREE_TYPE (t)) | |
1650 | && CLASSTYPE_VSIZE (TREE_TYPE (t))); | |
1651 | } | |
1652 | ||
f71f87f9 MM |
1653 | /* Return the declarations that are members of the namespace NS. */ |
1654 | ||
1655 | tree | |
1656 | cp_namespace_decls (ns) | |
1657 | tree ns; | |
1658 | { | |
1659 | return NAMESPACE_LEVEL (ns)->names; | |
1660 | } | |
1661 | ||
0aafb128 MM |
1662 | /* Walk all the namespaces contained NAMESPACE, including NAMESPACE |
1663 | itself, calling F for each. The DATA is passed to F as well. */ | |
1664 | ||
1665 | static int | |
1666 | walk_namespaces_r (namespace, f, data) | |
1667 | tree namespace; | |
1668 | walk_namespaces_fn f; | |
1669 | void *data; | |
1670 | { | |
1671 | tree current; | |
1672 | int result = 0; | |
1673 | ||
1674 | result |= (*f) (namespace, data); | |
1675 | ||
f71f87f9 | 1676 | for (current = cp_namespace_decls (namespace); |
0aafb128 MM |
1677 | current; |
1678 | current = TREE_CHAIN (current)) | |
1679 | { | |
1680 | if (TREE_CODE (current) != NAMESPACE_DECL | |
1681 | || DECL_NAMESPACE_ALIAS (current)) | |
1682 | continue; | |
1683 | if (!DECL_LANG_SPECIFIC (current)) | |
1684 | { | |
1685 | /* Hmm. std. */ | |
1686 | my_friendly_assert (current == std_node, 393); | |
1687 | continue; | |
1688 | } | |
1689 | ||
1690 | /* We found a namespace. */ | |
1691 | result |= walk_namespaces_r (current, f, data); | |
1692 | } | |
1693 | ||
1694 | return result; | |
1695 | } | |
1696 | ||
1697 | /* Walk all the namespaces, calling F for each. The DATA is passed to | |
1698 | F as well. */ | |
1699 | ||
1700 | int | |
1701 | walk_namespaces (f, data) | |
1702 | walk_namespaces_fn f; | |
1703 | void *data; | |
1704 | { | |
1705 | return walk_namespaces_r (global_namespace, f, data); | |
1706 | } | |
1707 | ||
1708 | struct walk_globals_data { | |
1709 | walk_globals_pred p; | |
1710 | walk_globals_fn f; | |
1711 | void *data; | |
1712 | }; | |
1713 | ||
1714 | /* Walk the global declarations in NAMESPACE. Whenever one is found | |
1715 | for which P returns non-zero, call F with its address. If any call | |
1716 | to F returns a non-zero value, return a non-zero value. */ | |
1717 | ||
68642fb6 | 1718 | static int |
0aafb128 MM |
1719 | walk_globals_r (namespace, data) |
1720 | tree namespace; | |
1721 | void *data; | |
1722 | { | |
1723 | struct walk_globals_data* wgd = (struct walk_globals_data *) data; | |
1724 | walk_globals_pred p = wgd->p; | |
1725 | walk_globals_fn f = wgd->f; | |
1726 | void *d = wgd->data; | |
1727 | tree *t; | |
1728 | int result = 0; | |
1729 | ||
1730 | t = &NAMESPACE_LEVEL (namespace)->names; | |
1731 | ||
1732 | while (*t) | |
1733 | { | |
1734 | tree glbl = *t; | |
1735 | ||
1736 | if ((*p) (glbl, d)) | |
1737 | result |= (*f) (t, d); | |
1738 | ||
1739 | /* If F changed *T, then *T still points at the next item to | |
1740 | examine. */ | |
1741 | if (*t == glbl) | |
1742 | t = &TREE_CHAIN (*t); | |
1743 | } | |
1744 | ||
1745 | return result; | |
1746 | } | |
1747 | ||
1748 | /* Walk the global declarations. Whenever one is found for which P | |
1749 | returns non-zero, call F with its address. If any call to F | |
1750 | returns a non-zero value, return a non-zero value. */ | |
1751 | ||
1752 | int | |
1753 | walk_globals (p, f, data) | |
1754 | walk_globals_pred p; | |
1755 | walk_globals_fn f; | |
1756 | void *data; | |
1757 | { | |
1758 | struct walk_globals_data wgd; | |
1759 | wgd.p = p; | |
1760 | wgd.f = f; | |
1761 | wgd.data = data; | |
1762 | ||
1763 | return walk_namespaces (walk_globals_r, &wgd); | |
1764 | } | |
1765 | ||
1766 | /* Call wrapup_globals_declarations for the globals in NAMESPACE. If | |
1767 | DATA is non-NULL, this is the last time we will call | |
1768 | wrapup_global_declarations for this NAMESPACE. */ | |
1769 | ||
1770 | int | |
1771 | wrapup_globals_for_namespace (namespace, data) | |
1772 | tree namespace; | |
1773 | void *data; | |
1774 | { | |
f71f87f9 | 1775 | tree globals = cp_namespace_decls (namespace); |
0aafb128 MM |
1776 | int len = list_length (globals); |
1777 | tree *vec = (tree *) alloca (sizeof (tree) * len); | |
1778 | int i; | |
0352cfc8 | 1779 | int result; |
0aafb128 MM |
1780 | tree decl; |
1781 | int last_time = (data != 0); | |
1782 | ||
1783 | if (last_time && namespace == global_namespace) | |
1784 | /* Let compile_file handle the global namespace. */ | |
1785 | return 0; | |
1786 | ||
1787 | /* Process the decls in reverse order--earliest first. | |
1788 | Put them into VEC from back to front, then take out from front. */ | |
68642fb6 | 1789 | |
0aafb128 MM |
1790 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) |
1791 | vec[len - i - 1] = decl; | |
68642fb6 | 1792 | |
0352cfc8 MM |
1793 | if (last_time) |
1794 | { | |
1795 | check_global_declarations (vec, len); | |
1796 | return 0; | |
1797 | } | |
1798 | ||
1799 | /* Temporarily mark vtables as external. That prevents | |
1800 | wrapup_global_declarations from writing them out; we must process | |
1801 | them ourselves in finish_vtable_vardecl. */ | |
1802 | for (i = 0; i < len; ++i) | |
91f2aa22 | 1803 | if (vtable_decl_p (vec[i], /*data=*/0) && !DECL_EXTERNAL (vec[i])) |
0352cfc8 MM |
1804 | { |
1805 | DECL_NOT_REALLY_EXTERN (vec[i]) = 1; | |
1806 | DECL_EXTERNAL (vec[i]) = 1; | |
1807 | } | |
0aafb128 | 1808 | |
0352cfc8 MM |
1809 | /* Write out any globals that need to be output. */ |
1810 | result = wrapup_global_declarations (vec, len); | |
1811 | ||
1812 | /* Undo the hack to DECL_EXTERNAL above. */ | |
1813 | for (i = 0; i < len; ++i) | |
1814 | if (vtable_decl_p (vec[i], /*data=*/0) | |
1815 | && DECL_NOT_REALLY_EXTERN (vec[i])) | |
1816 | { | |
1817 | DECL_NOT_REALLY_EXTERN (vec[i]) = 0; | |
1818 | DECL_EXTERNAL (vec[i]) = 0; | |
1819 | } | |
1820 | ||
1821 | return result; | |
0aafb128 MM |
1822 | } |
1823 | ||
4519c0a8 | 1824 | \f |
fc6af6e3 RH |
1825 | /* Mark ARG (which is really a struct binding_level **) for GC. */ |
1826 | ||
4519c0a8 MM |
1827 | static void |
1828 | mark_binding_level (arg) | |
1829 | void *arg; | |
1830 | { | |
1831 | struct binding_level *lvl = *(struct binding_level **)arg; | |
1832 | ||
1833 | while (lvl) | |
1834 | { | |
1835 | ggc_mark_tree (lvl->names); | |
1836 | ggc_mark_tree (lvl->tags); | |
1837 | ggc_mark_tree (lvl->usings); | |
1838 | ggc_mark_tree (lvl->using_directives); | |
1839 | ggc_mark_tree (lvl->class_shadowed); | |
1840 | ggc_mark_tree (lvl->type_shadowed); | |
1841 | ggc_mark_tree (lvl->shadowed_labels); | |
1842 | ggc_mark_tree (lvl->blocks); | |
1843 | ggc_mark_tree (lvl->this_block); | |
70adf8a9 | 1844 | ggc_mark_tree (lvl->this_class); |
4519c0a8 MM |
1845 | ggc_mark_tree (lvl->incomplete); |
1846 | ggc_mark_tree (lvl->dead_vars_from_for); | |
1847 | ||
1848 | lvl = lvl->level_chain; | |
1849 | } | |
1850 | } | |
8d08fdba MS |
1851 | \f |
1852 | /* For debugging. */ | |
5566b478 MS |
1853 | static int no_print_functions = 0; |
1854 | static int no_print_builtins = 0; | |
8d08fdba MS |
1855 | |
1856 | void | |
1857 | print_binding_level (lvl) | |
1858 | struct binding_level *lvl; | |
1859 | { | |
1860 | tree t; | |
1861 | int i = 0, len; | |
1862 | fprintf (stderr, " blocks="); | |
1863 | fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks); | |
1864 | fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d", | |
f30432d7 | 1865 | list_length (lvl->incomplete), lvl->parm_flag, lvl->keep); |
8d08fdba MS |
1866 | if (lvl->tag_transparent) |
1867 | fprintf (stderr, " tag-transparent"); | |
1868 | if (lvl->more_cleanups_ok) | |
1869 | fprintf (stderr, " more-cleanups-ok"); | |
1870 | if (lvl->have_cleanups) | |
1871 | fprintf (stderr, " have-cleanups"); | |
8d08fdba MS |
1872 | fprintf (stderr, "\n"); |
1873 | if (lvl->names) | |
1874 | { | |
1875 | fprintf (stderr, " names:\t"); | |
1876 | /* We can probably fit 3 names to a line? */ | |
1877 | for (t = lvl->names; t; t = TREE_CHAIN (t)) | |
1878 | { | |
68642fb6 | 1879 | if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL)) |
8d08fdba MS |
1880 | continue; |
1881 | if (no_print_builtins | |
fc378698 MS |
1882 | && (TREE_CODE (t) == TYPE_DECL) |
1883 | && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>"))) | |
8d08fdba MS |
1884 | continue; |
1885 | ||
1886 | /* Function decls tend to have longer names. */ | |
1887 | if (TREE_CODE (t) == FUNCTION_DECL) | |
1888 | len = 3; | |
1889 | else | |
1890 | len = 2; | |
1891 | i += len; | |
1892 | if (i > 6) | |
1893 | { | |
1894 | fprintf (stderr, "\n\t"); | |
1895 | i = len; | |
1896 | } | |
1897 | print_node_brief (stderr, "", t, 0); | |
bd6dd845 | 1898 | if (t == error_mark_node) |
8d08fdba MS |
1899 | break; |
1900 | } | |
1901 | if (i) | |
1902 | fprintf (stderr, "\n"); | |
1903 | } | |
1904 | if (lvl->tags) | |
1905 | { | |
1906 | fprintf (stderr, " tags:\t"); | |
1907 | i = 0; | |
1908 | for (t = lvl->tags; t; t = TREE_CHAIN (t)) | |
1909 | { | |
1910 | if (TREE_PURPOSE (t) == NULL_TREE) | |
1911 | len = 3; | |
1912 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
1913 | len = 2; | |
1914 | else | |
1915 | len = 4; | |
1916 | i += len; | |
1917 | if (i > 5) | |
1918 | { | |
1919 | fprintf (stderr, "\n\t"); | |
1920 | i = len; | |
1921 | } | |
1922 | if (TREE_PURPOSE (t) == NULL_TREE) | |
1923 | { | |
1924 | print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0); | |
1925 | fprintf (stderr, ">"); | |
1926 | } | |
1927 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
1928 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
1929 | else | |
1930 | { | |
1931 | print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0); | |
1932 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
1933 | fprintf (stderr, ">"); | |
1934 | } | |
1935 | } | |
1936 | if (i) | |
1937 | fprintf (stderr, "\n"); | |
1938 | } | |
8d08fdba MS |
1939 | if (lvl->class_shadowed) |
1940 | { | |
1941 | fprintf (stderr, " class-shadowed:"); | |
1942 | for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t)) | |
1943 | { | |
1944 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); | |
1945 | } | |
1946 | fprintf (stderr, "\n"); | |
1947 | } | |
1948 | if (lvl->type_shadowed) | |
1949 | { | |
1950 | fprintf (stderr, " type-shadowed:"); | |
1951 | for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t)) | |
1952 | { | |
8d08fdba | 1953 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); |
8d08fdba MS |
1954 | } |
1955 | fprintf (stderr, "\n"); | |
1956 | } | |
1957 | } | |
1958 | ||
1959 | void | |
1960 | print_other_binding_stack (stack) | |
1961 | struct binding_level *stack; | |
1962 | { | |
1963 | struct binding_level *level; | |
1964 | for (level = stack; level != global_binding_level; level = level->level_chain) | |
1965 | { | |
1966 | fprintf (stderr, "binding level "); | |
1967 | fprintf (stderr, HOST_PTR_PRINTF, level); | |
1968 | fprintf (stderr, "\n"); | |
1969 | print_binding_level (level); | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | void | |
1974 | print_binding_stack () | |
1975 | { | |
1976 | struct binding_level *b; | |
1977 | fprintf (stderr, "current_binding_level="); | |
1978 | fprintf (stderr, HOST_PTR_PRINTF, current_binding_level); | |
1979 | fprintf (stderr, "\nclass_binding_level="); | |
1980 | fprintf (stderr, HOST_PTR_PRINTF, class_binding_level); | |
1981 | fprintf (stderr, "\nglobal_binding_level="); | |
1982 | fprintf (stderr, HOST_PTR_PRINTF, global_binding_level); | |
1983 | fprintf (stderr, "\n"); | |
1984 | if (class_binding_level) | |
1985 | { | |
1986 | for (b = class_binding_level; b; b = b->level_chain) | |
1987 | if (b == current_binding_level) | |
1988 | break; | |
1989 | if (b) | |
1990 | b = class_binding_level; | |
1991 | else | |
1992 | b = current_binding_level; | |
1993 | } | |
1994 | else | |
1995 | b = current_binding_level; | |
1996 | print_other_binding_stack (b); | |
1997 | fprintf (stderr, "global:\n"); | |
1998 | print_binding_level (global_binding_level); | |
1999 | } | |
a9aedbc2 | 2000 | |
2c73f9f5 ML |
2001 | /* Namespace binding access routines: The namespace_bindings field of |
2002 | the identifier is polymorphic, with three possible values: | |
2003 | NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node | |
2004 | indicating the BINDING_VALUE of global_namespace. */ | |
30394414 | 2005 | |
2c73f9f5 ML |
2006 | /* Check whether the a binding for the name to scope is known. |
2007 | Assumes that the bindings of the name are already a list | |
2008 | of bindings. Returns the binding found, or NULL_TREE. */ | |
2009 | ||
2010 | static tree | |
2011 | find_binding (name, scope) | |
30394414 JM |
2012 | tree name; |
2013 | tree scope; | |
2014 | { | |
2c73f9f5 | 2015 | tree iter, prev = NULL_TREE; |
3e3f722c ML |
2016 | |
2017 | scope = ORIGINAL_NAMESPACE (scope); | |
68642fb6 | 2018 | |
30394414 JM |
2019 | for (iter = IDENTIFIER_NAMESPACE_BINDINGS (name); iter; |
2020 | iter = TREE_CHAIN (iter)) | |
2021 | { | |
2022 | my_friendly_assert (TREE_CODE (iter) == CPLUS_BINDING, 374); | |
2023 | if (BINDING_SCOPE (iter) == scope) | |
2c73f9f5 | 2024 | { |
cfe507be | 2025 | /* Move binding found to the front of the list, so |
2c73f9f5 ML |
2026 | subsequent lookups will find it faster. */ |
2027 | if (prev) | |
2028 | { | |
2029 | TREE_CHAIN (prev) = TREE_CHAIN (iter); | |
2030 | TREE_CHAIN (iter) = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2031 | IDENTIFIER_NAMESPACE_BINDINGS (name) = iter; | |
2032 | } | |
2033 | return iter; | |
2034 | } | |
2035 | prev = iter; | |
30394414 | 2036 | } |
2c73f9f5 ML |
2037 | return NULL_TREE; |
2038 | } | |
2039 | ||
2040 | /* Always returns a binding for name in scope. If the | |
2041 | namespace_bindings is not a list, convert it to one first. | |
2042 | If no binding is found, make a new one. */ | |
2043 | ||
2044 | tree | |
2045 | binding_for_name (name, scope) | |
2046 | tree name; | |
2047 | tree scope; | |
2048 | { | |
2049 | tree b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2050 | tree result; | |
3e3f722c ML |
2051 | |
2052 | scope = ORIGINAL_NAMESPACE (scope); | |
68642fb6 | 2053 | |
2c73f9f5 ML |
2054 | if (b && TREE_CODE (b) != CPLUS_BINDING) |
2055 | { | |
2056 | /* Get rid of optimization for global scope. */ | |
2057 | IDENTIFIER_NAMESPACE_BINDINGS (name) = NULL_TREE; | |
2058 | BINDING_VALUE (binding_for_name (name, global_namespace)) = b; | |
2059 | b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2060 | } | |
2061 | if (b && (result = find_binding (name, scope))) | |
2062 | return result; | |
cd9f6678 | 2063 | /* Not found, make a new one. */ |
2c73f9f5 ML |
2064 | result = make_node (CPLUS_BINDING); |
2065 | TREE_CHAIN (result) = b; | |
2066 | IDENTIFIER_NAMESPACE_BINDINGS (name) = result; | |
2067 | BINDING_SCOPE (result) = scope; | |
2068 | BINDING_TYPE (result) = NULL_TREE; | |
2069 | BINDING_VALUE (result) = NULL_TREE; | |
2c73f9f5 ML |
2070 | return result; |
2071 | } | |
2072 | ||
2073 | /* Return the binding value for name in scope, considering that | |
2074 | namespace_binding may or may not be a list of CPLUS_BINDINGS. */ | |
2075 | ||
2076 | tree | |
2077 | namespace_binding (name, scope) | |
2078 | tree name; | |
2079 | tree scope; | |
2080 | { | |
2081 | tree b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2082 | if (b == NULL_TREE) | |
2083 | return NULL_TREE; | |
cb0dbb9a JM |
2084 | if (scope == NULL_TREE) |
2085 | scope = global_namespace; | |
2c73f9f5 ML |
2086 | if (TREE_CODE (b) != CPLUS_BINDING) |
2087 | return (scope == global_namespace) ? b : NULL_TREE; | |
2088 | name = find_binding (name,scope); | |
2089 | if (name == NULL_TREE) | |
2090 | return name; | |
2091 | return BINDING_VALUE (name); | |
2092 | } | |
2093 | ||
2094 | /* Set the binding value for name in scope. If modifying the binding | |
2095 | of global_namespace is attempted, try to optimize it. */ | |
2096 | ||
2097 | void | |
2098 | set_namespace_binding (name, scope, val) | |
2099 | tree name; | |
2100 | tree scope; | |
2101 | tree val; | |
2102 | { | |
2103 | tree b; | |
cb0dbb9a JM |
2104 | |
2105 | if (scope == NULL_TREE) | |
2106 | scope = global_namespace; | |
68642fb6 | 2107 | |
2c73f9f5 ML |
2108 | if (scope == global_namespace) |
2109 | { | |
2110 | b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2111 | if (b == NULL_TREE || TREE_CODE (b) != CPLUS_BINDING) | |
2112 | { | |
2113 | IDENTIFIER_NAMESPACE_BINDINGS (name) = val; | |
2114 | return; | |
2115 | } | |
2116 | } | |
2117 | b = binding_for_name (name, scope); | |
2118 | BINDING_VALUE (b) = val; | |
30394414 JM |
2119 | } |
2120 | ||
dff6b454 RK |
2121 | /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we |
2122 | select a name that is unique to this compilation unit. */ | |
e92cc029 | 2123 | |
a9aedbc2 MS |
2124 | void |
2125 | push_namespace (name) | |
2126 | tree name; | |
2127 | { | |
b370501f | 2128 | tree d = NULL_TREE; |
30394414 JM |
2129 | int need_new = 1; |
2130 | int implicit_use = 0; | |
2c73f9f5 | 2131 | int global = 0; |
30394414 JM |
2132 | if (!global_namespace) |
2133 | { | |
2c73f9f5 | 2134 | /* This must be ::. */ |
30394414 | 2135 | my_friendly_assert (name == get_identifier ("::"), 377); |
2c73f9f5 | 2136 | global = 1; |
30394414 JM |
2137 | } |
2138 | else if (!name) | |
2139 | { | |
3ab52652 ML |
2140 | /* The name of anonymous namespace is unique for the translation |
2141 | unit. */ | |
0c8feefe MM |
2142 | if (!anonymous_namespace_name) |
2143 | anonymous_namespace_name = get_file_function_name ('N'); | |
2144 | name = anonymous_namespace_name; | |
3ab52652 ML |
2145 | d = IDENTIFIER_NAMESPACE_VALUE (name); |
2146 | if (d) | |
2147 | /* Reopening anonymous namespace. */ | |
2148 | need_new = 0; | |
30394414 | 2149 | implicit_use = 1; |
2c73f9f5 ML |
2150 | } |
2151 | else if (current_namespace == global_namespace | |
2152 | && name == DECL_NAME (std_node)) | |
2153 | { | |
2154 | in_std++; | |
2155 | return; | |
2156 | } | |
30394414 JM |
2157 | else |
2158 | { | |
2c73f9f5 | 2159 | /* Check whether this is an extended namespace definition. */ |
30394414 JM |
2160 | d = IDENTIFIER_NAMESPACE_VALUE (name); |
2161 | if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL) | |
3e3f722c ML |
2162 | { |
2163 | need_new = 0; | |
2164 | if (DECL_NAMESPACE_ALIAS (d)) | |
2165 | { | |
8251199e | 2166 | cp_error ("namespace alias `%D' not allowed here, assuming `%D'", |
3e3f722c ML |
2167 | d, DECL_NAMESPACE_ALIAS (d)); |
2168 | d = DECL_NAMESPACE_ALIAS (d); | |
2169 | } | |
2170 | } | |
30394414 | 2171 | } |
68642fb6 | 2172 | |
30394414 JM |
2173 | if (need_new) |
2174 | { | |
2c73f9f5 | 2175 | /* Make a new namespace, binding the name to it. */ |
6b57ac29 | 2176 | d = build_lang_decl (NAMESPACE_DECL, name, void_type_node); |
2c73f9f5 ML |
2177 | /* The global namespace is not pushed, and the global binding |
2178 | level is set elsewhere. */ | |
2179 | if (!global) | |
2180 | { | |
2181 | d = pushdecl (d); | |
2182 | pushlevel (0); | |
2183 | declare_namespace_level (); | |
2184 | NAMESPACE_LEVEL (d) = current_binding_level; | |
2185 | } | |
30394414 | 2186 | } |
2c73f9f5 ML |
2187 | else |
2188 | resume_binding_level (NAMESPACE_LEVEL (d)); | |
2189 | ||
30394414 JM |
2190 | if (implicit_use) |
2191 | do_using_directive (d); | |
2c73f9f5 | 2192 | /* Enter the name space. */ |
30394414 | 2193 | current_namespace = d; |
a9aedbc2 MS |
2194 | } |
2195 | ||
2196 | /* Pop from the scope of the current namespace. */ | |
e92cc029 | 2197 | |
a9aedbc2 MS |
2198 | void |
2199 | pop_namespace () | |
2200 | { | |
2c73f9f5 ML |
2201 | if (current_namespace == global_namespace) |
2202 | { | |
2203 | my_friendly_assert (in_std>0, 980421); | |
2204 | in_std--; | |
2205 | return; | |
2206 | } | |
cb0dbb9a | 2207 | current_namespace = CP_DECL_CONTEXT (current_namespace); |
2c73f9f5 ML |
2208 | /* The binding level is not popped, as it might be re-opened later. */ |
2209 | suspend_binding_level (); | |
2210 | } | |
a9aedbc2 | 2211 | |
61fc8c9e MM |
2212 | /* Push into the scope of the namespace NS, even if it is deeply |
2213 | nested within another namespace. */ | |
2214 | ||
2215 | void | |
2216 | push_nested_namespace (ns) | |
2217 | tree ns; | |
2218 | { | |
2219 | if (ns == global_namespace) | |
2220 | push_to_top_level (); | |
2221 | else | |
2222 | { | |
2223 | push_nested_namespace (CP_DECL_CONTEXT (ns)); | |
2224 | push_namespace (DECL_NAME (ns)); | |
2225 | } | |
2226 | } | |
2227 | ||
2228 | /* Pop back from the scope of the namespace NS, which was previously | |
2229 | entered with push_nested_namespace. */ | |
68642fb6 | 2230 | |
61fc8c9e MM |
2231 | void |
2232 | pop_nested_namespace (ns) | |
2233 | tree ns; | |
2234 | { | |
2235 | while (ns != global_namespace) | |
2236 | { | |
2237 | pop_namespace (); | |
2238 | ns = CP_DECL_CONTEXT (ns); | |
2239 | } | |
2240 | ||
2241 | pop_from_top_level (); | |
2242 | } | |
2243 | ||
8d08fdba MS |
2244 | \f |
2245 | /* Subroutines for reverting temporarily to top-level for instantiation | |
2246 | of templates and such. We actually need to clear out the class- and | |
2247 | local-value slots of all identifiers, so that only the global values | |
2248 | are at all visible. Simply setting current_binding_level to the global | |
2249 | scope isn't enough, because more binding levels may be pushed. */ | |
9cd64686 | 2250 | struct saved_scope *scope_chain; |
8d08fdba | 2251 | |
6f80451c MM |
2252 | /* Mark ST for GC. */ |
2253 | ||
2254 | static void | |
2255 | mark_stmt_tree (st) | |
2256 | struct stmt_tree *st; | |
2257 | { | |
2258 | ggc_mark_tree (st->x_last_stmt); | |
2259 | ggc_mark_tree (st->x_last_expr_type); | |
2260 | } | |
2261 | ||
9cd64686 | 2262 | /* Mark ARG (which is really a struct saved_scope **) for GC. */ |
fc6af6e3 RH |
2263 | |
2264 | static void | |
2265 | mark_saved_scope (arg) | |
2266 | void *arg; | |
2267 | { | |
2268 | struct saved_scope *t = *(struct saved_scope **)arg; | |
2269 | while (t) | |
2270 | { | |
fc6af6e3 RH |
2271 | mark_binding_level (&t->class_bindings); |
2272 | ggc_mark_tree (t->old_bindings); | |
2273 | ggc_mark_tree (t->old_namespace); | |
2274 | ggc_mark_tree (t->class_name); | |
2275 | ggc_mark_tree (t->class_type); | |
2276 | ggc_mark_tree (t->access_specifier); | |
a8f73d4b | 2277 | ggc_mark_tree (t->function_decl); |
fc6af6e3 | 2278 | if (t->lang_base) |
9cd64686 | 2279 | ggc_mark_tree_varray (t->lang_base); |
fc6af6e3 | 2280 | ggc_mark_tree (t->lang_name); |
9cd64686 | 2281 | ggc_mark_tree (t->x_function_parms); |
fc6af6e3 | 2282 | ggc_mark_tree (t->template_parms); |
9cd64686 MM |
2283 | ggc_mark_tree (t->x_previous_class_type); |
2284 | ggc_mark_tree (t->x_previous_class_values); | |
6f80451c | 2285 | ggc_mark_tree (t->x_saved_tree); |
70adf8a9 JM |
2286 | ggc_mark_tree (t->incomplete); |
2287 | ggc_mark_tree (t->lookups); | |
6f80451c MM |
2288 | |
2289 | mark_stmt_tree (&t->x_stmt_tree); | |
a8f73d4b | 2290 | mark_binding_level (&t->bindings); |
fc6af6e3 RH |
2291 | t = t->prev; |
2292 | } | |
2293 | } | |
2294 | ||
e92cc029 | 2295 | static tree |
45537677 MS |
2296 | store_bindings (names, old_bindings) |
2297 | tree names, old_bindings; | |
2298 | { | |
2299 | tree t; | |
2300 | for (t = names; t; t = TREE_CHAIN (t)) | |
2301 | { | |
2302 | tree binding, t1, id; | |
2303 | ||
2304 | if (TREE_CODE (t) == TREE_LIST) | |
2305 | id = TREE_PURPOSE (t); | |
2306 | else | |
2307 | id = DECL_NAME (t); | |
2308 | ||
68642fb6 | 2309 | if (!id |
f181d4ae MM |
2310 | /* Note that we may have an IDENTIFIER_CLASS_VALUE even when |
2311 | we have no IDENTIFIER_BINDING if we have left the class | |
2312 | scope, but cached the class-level declarations. */ | |
2313 | || !(IDENTIFIER_BINDING (id) || IDENTIFIER_CLASS_VALUE (id))) | |
45537677 MS |
2314 | continue; |
2315 | ||
2316 | for (t1 = old_bindings; t1; t1 = TREE_CHAIN (t1)) | |
2317 | if (TREE_VEC_ELT (t1, 0) == id) | |
2318 | goto skip_it; | |
78957a2a | 2319 | |
87e3dbc9 | 2320 | binding = make_tree_vec (4); |
78957a2a | 2321 | |
45537677 MS |
2322 | if (id) |
2323 | { | |
2324 | my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135); | |
2325 | TREE_VEC_ELT (binding, 0) = id; | |
2c73f9f5 | 2326 | TREE_VEC_ELT (binding, 1) = REAL_IDENTIFIER_TYPE_VALUE (id); |
f181d4ae | 2327 | TREE_VEC_ELT (binding, 2) = IDENTIFIER_BINDING (id); |
45537677 | 2328 | TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id); |
f181d4ae | 2329 | IDENTIFIER_BINDING (id) = NULL_TREE; |
45537677 MS |
2330 | IDENTIFIER_CLASS_VALUE (id) = NULL_TREE; |
2331 | } | |
2332 | TREE_CHAIN (binding) = old_bindings; | |
2333 | old_bindings = binding; | |
2334 | skip_it: | |
2335 | ; | |
2336 | } | |
2337 | return old_bindings; | |
2338 | } | |
2339 | ||
8d08fdba | 2340 | void |
5566b478 MS |
2341 | maybe_push_to_top_level (pseudo) |
2342 | int pseudo; | |
8d08fdba | 2343 | { |
a8f73d4b | 2344 | struct saved_scope *s; |
9cd64686 | 2345 | struct binding_level *b; |
a8f73d4b MM |
2346 | tree old_bindings; |
2347 | int need_pop; | |
2348 | ||
2349 | s = (struct saved_scope *) xcalloc (1, sizeof (struct saved_scope)); | |
8d08fdba | 2350 | |
9cd64686 MM |
2351 | b = scope_chain ? current_binding_level : 0; |
2352 | ||
a8f73d4b | 2353 | /* If we're in the middle of some function, save our state. */ |
01d939e8 | 2354 | if (cfun) |
a8f73d4b MM |
2355 | { |
2356 | need_pop = 1; | |
2357 | push_function_context_to (NULL_TREE); | |
2358 | } | |
2359 | else | |
2360 | need_pop = 0; | |
e349ee73 | 2361 | |
a8f73d4b | 2362 | old_bindings = NULL_TREE; |
9cd64686 | 2363 | if (scope_chain && previous_class_type) |
a50f0918 MS |
2364 | old_bindings = store_bindings (previous_class_values, old_bindings); |
2365 | ||
8d08fdba MS |
2366 | /* Have to include global_binding_level, because class-level decls |
2367 | aren't listed anywhere useful. */ | |
2368 | for (; b; b = b->level_chain) | |
2369 | { | |
2370 | tree t; | |
2371 | ||
2c73f9f5 ML |
2372 | /* Template IDs are inserted into the global level. If they were |
2373 | inserted into namespace level, finish_file wouldn't find them | |
2374 | when doing pending instantiations. Therefore, don't stop at | |
2375 | namespace level, but continue until :: . */ | |
5566b478 MS |
2376 | if (b == global_binding_level || (pseudo && b->pseudo_global)) |
2377 | break; | |
8d08fdba | 2378 | |
45537677 | 2379 | old_bindings = store_bindings (b->names, old_bindings); |
cffa8729 | 2380 | /* We also need to check class_shadowed to save class-level type |
45537677 MS |
2381 | bindings, since pushclass doesn't fill in b->names. */ |
2382 | if (b->parm_flag == 2) | |
cffa8729 | 2383 | old_bindings = store_bindings (b->class_shadowed, old_bindings); |
8d08fdba | 2384 | |
8d08fdba MS |
2385 | /* Unwind type-value slots back to top level. */ |
2386 | for (t = b->type_shadowed; t; t = TREE_CHAIN (t)) | |
2387 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t)); | |
2388 | } | |
fc0e7bf5 MM |
2389 | s->prev = scope_chain; |
2390 | s->old_bindings = old_bindings; | |
a8f73d4b MM |
2391 | s->bindings = b; |
2392 | s->need_pop_function_context = need_pop; | |
2393 | s->function_decl = current_function_decl; | |
fc0e7bf5 MM |
2394 | |
2395 | scope_chain = s; | |
8d08fdba | 2396 | current_function_decl = NULL_TREE; |
9cd64686 MM |
2397 | VARRAY_TREE_INIT (current_lang_base, 10, "current_lang_base"); |
2398 | current_lang_stack = &VARRAY_TREE (current_lang_base, 0); | |
51c184be MS |
2399 | current_lang_name = lang_name_cplusplus; |
2400 | strict_prototype = strict_prototypes_lang_cplusplus; | |
2c73f9f5 | 2401 | current_namespace = global_namespace; |
5566b478 MS |
2402 | } |
2403 | ||
2404 | void | |
2405 | push_to_top_level () | |
2406 | { | |
2407 | maybe_push_to_top_level (0); | |
8d08fdba MS |
2408 | } |
2409 | ||
2410 | void | |
2411 | pop_from_top_level () | |
2412 | { | |
9cd64686 | 2413 | struct saved_scope *s = scope_chain; |
8d08fdba MS |
2414 | tree t; |
2415 | ||
e76a2646 | 2416 | /* Clear out class-level bindings cache. */ |
8d08fdba | 2417 | if (previous_class_type) |
8f032717 | 2418 | invalidate_class_lookup_cache (); |
8d08fdba | 2419 | |
9cd64686 MM |
2420 | VARRAY_FREE (current_lang_base); |
2421 | ||
2422 | scope_chain = s->prev; | |
87e3dbc9 | 2423 | for (t = s->old_bindings; t; t = TREE_CHAIN (t)) |
8d08fdba MS |
2424 | { |
2425 | tree id = TREE_VEC_ELT (t, 0); | |
2426 | if (id) | |
2427 | { | |
2c73f9f5 | 2428 | SET_IDENTIFIER_TYPE_VALUE (id, TREE_VEC_ELT (t, 1)); |
f181d4ae | 2429 | IDENTIFIER_BINDING (id) = TREE_VEC_ELT (t, 2); |
8d08fdba | 2430 | IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3); |
9cd64686 | 2431 | } |
8d08fdba | 2432 | } |
9cd64686 | 2433 | |
51c184be MS |
2434 | if (current_lang_name == lang_name_cplusplus) |
2435 | strict_prototype = strict_prototypes_lang_cplusplus; | |
2436 | else if (current_lang_name == lang_name_c) | |
2437 | strict_prototype = strict_prototypes_lang_c; | |
51c184be | 2438 | |
a8f73d4b MM |
2439 | /* If we were in the middle of compiling a function, restore our |
2440 | state. */ | |
2441 | if (s->need_pop_function_context) | |
2442 | pop_function_context_from (NULL_TREE); | |
2443 | current_function_decl = s->function_decl; | |
e349ee73 | 2444 | |
a8f73d4b | 2445 | free (s); |
8d08fdba MS |
2446 | } |
2447 | \f | |
2448 | /* Push a definition of struct, union or enum tag "name". | |
68642fb6 | 2449 | into binding_level "b". "type" should be the type node, |
8d08fdba MS |
2450 | We assume that the tag "name" is not already defined. |
2451 | ||
2452 | Note that the definition may really be just a forward reference. | |
2453 | In that case, the TYPE_SIZE will be a NULL_TREE. | |
2454 | ||
e92cc029 | 2455 | C++ gratuitously puts all these tags in the name space. */ |
8d08fdba MS |
2456 | |
2457 | /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID, | |
2458 | record the shadowed value for this binding contour. TYPE is | |
2459 | the type that ID maps to. */ | |
2460 | ||
2461 | static void | |
2462 | set_identifier_type_value_with_scope (id, type, b) | |
2463 | tree id; | |
2464 | tree type; | |
2465 | struct binding_level *b; | |
2466 | { | |
2c73f9f5 | 2467 | if (!b->namespace_p) |
8d08fdba | 2468 | { |
2c73f9f5 ML |
2469 | /* Shadow the marker, not the real thing, so that the marker |
2470 | gets restored later. */ | |
2471 | tree old_type_value = REAL_IDENTIFIER_TYPE_VALUE (id); | |
8d08fdba MS |
2472 | b->type_shadowed |
2473 | = tree_cons (id, old_type_value, b->type_shadowed); | |
2474 | } | |
2c73f9f5 ML |
2475 | else |
2476 | { | |
2477 | tree binding = binding_for_name (id, current_namespace); | |
2478 | BINDING_TYPE (binding) = type; | |
2479 | /* Store marker instead of real type. */ | |
2480 | type = global_type_node; | |
2481 | } | |
8d08fdba MS |
2482 | SET_IDENTIFIER_TYPE_VALUE (id, type); |
2483 | } | |
2484 | ||
8f032717 | 2485 | /* As set_identifier_type_value_with_scope, but using current_binding_level. */ |
8d08fdba MS |
2486 | |
2487 | void | |
2488 | set_identifier_type_value (id, type) | |
2489 | tree id; | |
2490 | tree type; | |
2491 | { | |
8f032717 | 2492 | set_identifier_type_value_with_scope (id, type, current_binding_level); |
8d08fdba MS |
2493 | } |
2494 | ||
2c73f9f5 ML |
2495 | /* Return the type associated with id. */ |
2496 | ||
2497 | tree | |
2498 | identifier_type_value (id) | |
2499 | tree id; | |
2500 | { | |
2501 | /* There is no type with that name, anywhere. */ | |
2502 | if (REAL_IDENTIFIER_TYPE_VALUE (id) == NULL_TREE) | |
2503 | return NULL_TREE; | |
2504 | /* This is not the type marker, but the real thing. */ | |
2505 | if (REAL_IDENTIFIER_TYPE_VALUE (id) != global_type_node) | |
2506 | return REAL_IDENTIFIER_TYPE_VALUE (id); | |
2507 | /* Have to search for it. It must be on the global level, now. | |
2508 | Ask lookup_name not to return non-types. */ | |
3e3f722c | 2509 | id = lookup_name_real (id, 2, 1, 0); |
2c73f9f5 ML |
2510 | if (id) |
2511 | return TREE_TYPE (id); | |
2512 | return NULL_TREE; | |
2513 | } | |
2514 | ||
a9aedbc2 MS |
2515 | /* Pop off extraneous binding levels left over due to syntax errors. |
2516 | ||
2517 | We don't pop past namespaces, as they might be valid. */ | |
e92cc029 | 2518 | |
8926095f MS |
2519 | void |
2520 | pop_everything () | |
2521 | { | |
2522 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2523 | fprintf (stderr, "XXX entering pop_everything ()\n"); | |
2524 | #endif | |
8f032717 | 2525 | while (!toplevel_bindings_p ()) |
8926095f | 2526 | { |
8f032717 | 2527 | if (current_binding_level->parm_flag == 2) |
b74a0560 | 2528 | pop_nested_class (); |
8926095f MS |
2529 | else |
2530 | poplevel (0, 0, 0); | |
2531 | } | |
2532 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2533 | fprintf (stderr, "XXX leaving pop_everything ()\n"); | |
2534 | #endif | |
2535 | } | |
2536 | ||
39c01e4c MM |
2537 | /* The type TYPE is being declared. If it is a class template, or a |
2538 | specialization of a class template, do any processing required and | |
2539 | perform error-checking. If IS_FRIEND is non-zero, this TYPE is | |
2540 | being declared a friend. B is the binding level at which this TYPE | |
2541 | should be bound. | |
2542 | ||
2543 | Returns the TYPE_DECL for TYPE, which may have been altered by this | |
2544 | processing. */ | |
2545 | ||
68642fb6 | 2546 | static tree |
39c01e4c MM |
2547 | maybe_process_template_type_declaration (type, globalize, b) |
2548 | tree type; | |
2549 | int globalize; | |
2550 | struct binding_level* b; | |
2551 | { | |
2552 | tree decl = TYPE_NAME (type); | |
68642fb6 | 2553 | |
39c01e4c MM |
2554 | if (processing_template_parmlist) |
2555 | /* You can't declare a new template type in a template parameter | |
2556 | list. But, you can declare a non-template type: | |
68642fb6 | 2557 | |
39c01e4c | 2558 | template <class A*> struct S; |
68642fb6 | 2559 | |
39c01e4c MM |
2560 | is a forward-declaration of `A'. */ |
2561 | ; | |
68642fb6 | 2562 | else |
39c01e4c MM |
2563 | { |
2564 | maybe_check_template_type (type); | |
2565 | ||
68642fb6 | 2566 | my_friendly_assert (IS_AGGR_TYPE (type) |
ed44da02 | 2567 | || TREE_CODE (type) == ENUMERAL_TYPE, 0); |
68642fb6 UD |
2568 | |
2569 | ||
3ebc5c52 | 2570 | if (processing_template_decl) |
39c01e4c MM |
2571 | { |
2572 | /* This may change after the call to | |
2573 | push_template_decl_real, but we want the original value. */ | |
2574 | tree name = DECL_NAME (decl); | |
2575 | ||
2576 | decl = push_template_decl_real (decl, globalize); | |
2577 | /* If the current binding level is the binding level for the | |
2578 | template parameters (see the comment in | |
2579 | begin_template_parm_list) and the enclosing level is a class | |
2580 | scope, and we're not looking at a friend, push the | |
2581 | declaration of the member class into the class scope. In the | |
2582 | friend case, push_template_decl will already have put the | |
2583 | friend into global scope, if appropriate. */ | |
ed44da02 MM |
2584 | if (TREE_CODE (type) != ENUMERAL_TYPE |
2585 | && !globalize && b->pseudo_global | |
39c01e4c MM |
2586 | && b->level_chain->parm_flag == 2) |
2587 | { | |
61a127b3 | 2588 | finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type)); |
39c01e4c MM |
2589 | /* Put this tag on the list of tags for the class, since |
2590 | that won't happen below because B is not the class | |
2591 | binding level, but is instead the pseudo-global level. */ | |
68642fb6 | 2592 | b->level_chain->tags = |
e1b3e07d | 2593 | tree_cons (name, type, b->level_chain->tags); |
39c01e4c MM |
2594 | if (TYPE_SIZE (current_class_type) == NULL_TREE) |
2595 | CLASSTYPE_TAGS (current_class_type) = b->level_chain->tags; | |
2596 | } | |
2597 | } | |
2598 | } | |
2599 | ||
2600 | return decl; | |
2601 | } | |
2602 | ||
9188c363 MM |
2603 | /* In C++, you don't have to write `struct S' to refer to `S'; you |
2604 | can just use `S'. We accomplish this by creating a TYPE_DECL as | |
2605 | if the user had written `typedef struct S S'. Create and return | |
2606 | the TYPE_DECL for TYPE. */ | |
2607 | ||
2608 | tree | |
2609 | create_implicit_typedef (name, type) | |
2610 | tree name; | |
2611 | tree type; | |
2612 | { | |
2613 | tree decl; | |
2614 | ||
2615 | decl = build_decl (TYPE_DECL, name, type); | |
2616 | SET_DECL_ARTIFICIAL (decl); | |
2617 | /* There are other implicit type declarations, like the one *within* | |
2618 | a class that allows you to write `S::S'. We must distinguish | |
2619 | amongst these. */ | |
2620 | SET_DECL_IMPLICIT_TYPEDEF_P (decl); | |
2621 | TYPE_NAME (type) = decl; | |
2622 | ||
2623 | return decl; | |
2624 | } | |
2625 | ||
8d08fdba | 2626 | /* Push a tag name NAME for struct/class/union/enum type TYPE. |
6757edfe | 2627 | Normally put it into the inner-most non-tag-transparent scope, |
8d08fdba | 2628 | but if GLOBALIZE is true, put it in the inner-most non-class scope. |
e92cc029 | 2629 | The latter is needed for implicit declarations. */ |
8d08fdba MS |
2630 | |
2631 | void | |
2632 | pushtag (name, type, globalize) | |
2633 | tree name, type; | |
2634 | int globalize; | |
2635 | { | |
2636 | register struct binding_level *b; | |
8d08fdba | 2637 | |
8f032717 | 2638 | b = current_binding_level; |
8d08fdba MS |
2639 | while (b->tag_transparent |
2640 | || (globalize && b->parm_flag == 2)) | |
2641 | b = b->level_chain; | |
2642 | ||
e1b3e07d | 2643 | b->tags = tree_cons (name, type, b->tags); |
8d08fdba MS |
2644 | |
2645 | if (name) | |
2646 | { | |
8d08fdba | 2647 | /* Do C++ gratuitous typedefing. */ |
db5ae43f | 2648 | if (IDENTIFIER_TYPE_VALUE (name) != type) |
8d08fdba | 2649 | { |
93cdc044 | 2650 | register tree d = NULL_TREE; |
848cf1e0 | 2651 | int in_class = 0; |
9188c363 | 2652 | tree context = TYPE_CONTEXT (type); |
280f9385 | 2653 | |
280f9385 MM |
2654 | if (! context) |
2655 | { | |
2656 | tree cs = current_scope (); | |
2657 | ||
2658 | if (! globalize) | |
2659 | context = cs; | |
68642fb6 | 2660 | else if (cs != NULL_TREE |
280f9385 MM |
2661 | && TREE_CODE_CLASS (TREE_CODE (cs)) == 't') |
2662 | /* When declaring a friend class of a local class, we want | |
2663 | to inject the newly named class into the scope | |
2664 | containing the local class, not the namespace scope. */ | |
2665 | context = hack_decl_function_context (get_type_decl (cs)); | |
2666 | } | |
280f9385 MM |
2667 | if (!context) |
2668 | context = current_namespace; | |
8d08fdba | 2669 | |
93cdc044 JM |
2670 | if ((b->pseudo_global && b->level_chain->parm_flag == 2) |
2671 | || b->parm_flag == 2) | |
2672 | in_class = 1; | |
93cdc044 | 2673 | |
848cf1e0 MM |
2674 | if (current_lang_name == lang_name_java) |
2675 | TYPE_FOR_JAVA (type) = 1; | |
93cdc044 | 2676 | |
9188c363 | 2677 | d = create_implicit_typedef (name, type); |
cb0dbb9a | 2678 | DECL_CONTEXT (d) = FROB_CONTEXT (context); |
9188c363 MM |
2679 | if (! in_class) |
2680 | set_identifier_type_value_with_scope (name, type, b); | |
e1cd6e56 | 2681 | |
39c01e4c MM |
2682 | d = maybe_process_template_type_declaration (type, |
2683 | globalize, b); | |
93cdc044 JM |
2684 | |
2685 | if (b->parm_flag == 2) | |
61a127b3 | 2686 | { |
848cf1e0 | 2687 | if (!PROCESSING_REAL_TEMPLATE_DECL_P ()) |
61a127b3 MM |
2688 | /* Put this TYPE_DECL on the TYPE_FIELDS list for the |
2689 | class. But if it's a member template class, we | |
2690 | want the TEMPLATE_DECL, not the TYPE_DECL, so this | |
2691 | is done later. */ | |
2692 | finish_member_declaration (d); | |
8f032717 MM |
2693 | else |
2694 | pushdecl_class_level (d); | |
61a127b3 | 2695 | } |
93cdc044 JM |
2696 | else |
2697 | d = pushdecl_with_scope (d, b); | |
2698 | ||
848cf1e0 MM |
2699 | if (ANON_AGGRNAME_P (name)) |
2700 | DECL_IGNORED_P (d) = 1; | |
2701 | ||
2702 | TYPE_CONTEXT (type) = DECL_CONTEXT (d); | |
2703 | DECL_ASSEMBLER_NAME (d) = DECL_NAME (d); | |
2704 | if (!uses_template_parms (type)) | |
2705 | DECL_ASSEMBLER_NAME (d) | |
2706 | = get_identifier (build_overload_name (type, 1, 1)); | |
8d08fdba MS |
2707 | } |
2708 | if (b->parm_flag == 2) | |
2709 | { | |
8d08fdba MS |
2710 | if (TYPE_SIZE (current_class_type) == NULL_TREE) |
2711 | CLASSTYPE_TAGS (current_class_type) = b->tags; | |
2712 | } | |
2713 | } | |
2714 | ||
2715 | if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
2716 | /* Use the canonical TYPE_DECL for this node. */ | |
2717 | TYPE_STUB_DECL (type) = TYPE_NAME (type); | |
2718 | else | |
2719 | { | |
2720 | /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE | |
2721 | will be the tagged type we just added to the current | |
2722 | binding level. This fake NULL-named TYPE_DECL node helps | |
2723 | dwarfout.c to know when it needs to output a | |
2724 | representation of a tagged type, and it also gives us a | |
2725 | convenient place to record the "scope start" address for | |
2726 | the tagged type. */ | |
2727 | ||
8d08fdba | 2728 | tree d = build_decl (TYPE_DECL, NULL_TREE, type); |
8d08fdba MS |
2729 | TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b); |
2730 | } | |
2731 | } | |
2732 | ||
2733 | /* Counter used to create anonymous type names. */ | |
e92cc029 | 2734 | |
8d08fdba MS |
2735 | static int anon_cnt = 0; |
2736 | ||
2737 | /* Return an IDENTIFIER which can be used as a name for | |
2738 | anonymous structs and unions. */ | |
e92cc029 | 2739 | |
8d08fdba MS |
2740 | tree |
2741 | make_anon_name () | |
2742 | { | |
2743 | char buf[32]; | |
2744 | ||
2745 | sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++); | |
2746 | return get_identifier (buf); | |
2747 | } | |
2748 | ||
2749 | /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames. | |
2750 | This keeps dbxout from getting confused. */ | |
e92cc029 | 2751 | |
8d08fdba MS |
2752 | void |
2753 | clear_anon_tags () | |
2754 | { | |
2755 | register struct binding_level *b; | |
2756 | register tree tags; | |
2757 | static int last_cnt = 0; | |
2758 | ||
2759 | /* Fast out if no new anon names were declared. */ | |
2760 | if (last_cnt == anon_cnt) | |
2761 | return; | |
2762 | ||
2763 | b = current_binding_level; | |
2764 | while (b->tag_transparent) | |
2765 | b = b->level_chain; | |
2766 | tags = b->tags; | |
2767 | while (tags) | |
2768 | { | |
2769 | /* A NULL purpose means we have already processed all tags | |
2770 | from here to the end of the list. */ | |
2771 | if (TREE_PURPOSE (tags) == NULL_TREE) | |
2772 | break; | |
2773 | if (ANON_AGGRNAME_P (TREE_PURPOSE (tags))) | |
2774 | TREE_PURPOSE (tags) = NULL_TREE; | |
2775 | tags = TREE_CHAIN (tags); | |
2776 | } | |
2777 | last_cnt = anon_cnt; | |
2778 | } | |
2779 | \f | |
2780 | /* Subroutine of duplicate_decls: return truthvalue of whether | |
2781 | or not types of these decls match. | |
2782 | ||
2783 | For C++, we must compare the parameter list so that `int' can match | |
2784 | `int&' in a parameter position, but `int&' is not confused with | |
2785 | `const int&'. */ | |
e92cc029 | 2786 | |
6060a796 | 2787 | int |
8d08fdba MS |
2788 | decls_match (newdecl, olddecl) |
2789 | tree newdecl, olddecl; | |
2790 | { | |
2791 | int types_match; | |
2792 | ||
347d73d7 ML |
2793 | if (newdecl == olddecl) |
2794 | return 1; | |
2795 | ||
6b4b3deb MM |
2796 | if (TREE_CODE (newdecl) != TREE_CODE (olddecl)) |
2797 | /* If the two DECLs are not even the same kind of thing, we're not | |
2798 | interested in their types. */ | |
2799 | return 0; | |
2800 | ||
2801 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
8d08fdba MS |
2802 | { |
2803 | tree f1 = TREE_TYPE (newdecl); | |
2804 | tree f2 = TREE_TYPE (olddecl); | |
2805 | tree p1 = TYPE_ARG_TYPES (f1); | |
2806 | tree p2 = TYPE_ARG_TYPES (f2); | |
2807 | ||
c5a6fc45 JM |
2808 | if (DECL_REAL_CONTEXT (newdecl) != DECL_REAL_CONTEXT (olddecl) |
2809 | && ! (DECL_LANGUAGE (newdecl) == lang_c | |
2810 | && DECL_LANGUAGE (olddecl) == lang_c)) | |
2811 | return 0; | |
2812 | ||
8d08fdba MS |
2813 | /* When we parse a static member function definition, |
2814 | we put together a FUNCTION_DECL which thinks its type | |
2815 | is METHOD_TYPE. Change that to FUNCTION_TYPE, and | |
2816 | proceed. */ | |
2817 | if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl)) | |
700f8a87 | 2818 | revert_static_member_fn (&newdecl, &f1, &p1); |
8d08fdba MS |
2819 | else if (TREE_CODE (f2) == METHOD_TYPE |
2820 | && DECL_STATIC_FUNCTION_P (newdecl)) | |
700f8a87 | 2821 | revert_static_member_fn (&olddecl, &f2, &p2); |
8d08fdba MS |
2822 | |
2823 | /* Here we must take care of the case where new default | |
2824 | parameters are specified. Also, warn if an old | |
2825 | declaration becomes ambiguous because default | |
2826 | parameters may cause the two to be ambiguous. */ | |
2827 | if (TREE_CODE (f1) != TREE_CODE (f2)) | |
2828 | { | |
2829 | if (TREE_CODE (f1) == OFFSET_TYPE) | |
8251199e | 2830 | cp_compiler_error ("`%D' redeclared as member function", newdecl); |
8d08fdba | 2831 | else |
8251199e | 2832 | cp_compiler_error ("`%D' redeclared as non-member function", newdecl); |
8d08fdba MS |
2833 | return 0; |
2834 | } | |
2835 | ||
3bfdc719 | 2836 | if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2))) |
8926095f | 2837 | { |
a28e3c7f | 2838 | if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c |
8926095f | 2839 | && p2 == NULL_TREE) |
a28e3c7f MS |
2840 | { |
2841 | types_match = self_promoting_args_p (p1); | |
2842 | if (p1 == void_list_node) | |
2843 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
2844 | } | |
2845 | else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c | |
2846 | && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE) | |
2847 | { | |
2848 | types_match = self_promoting_args_p (p2); | |
2849 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
2850 | } | |
8926095f | 2851 | else |
91063b51 | 2852 | types_match = compparms (p1, p2); |
8926095f | 2853 | } |
8d08fdba MS |
2854 | else |
2855 | types_match = 0; | |
2856 | } | |
6b4b3deb | 2857 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
51c184be | 2858 | { |
f84b4be9 JM |
2859 | if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl), |
2860 | DECL_TEMPLATE_PARMS (olddecl))) | |
2861 | return 0; | |
68642fb6 | 2862 | |
f84b4be9 JM |
2863 | if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) |
2864 | types_match = 1; | |
2865 | else | |
2866 | types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl), | |
2867 | DECL_TEMPLATE_RESULT (newdecl)); | |
51c184be | 2868 | } |
8d08fdba MS |
2869 | else |
2870 | { | |
2871 | if (TREE_TYPE (newdecl) == error_mark_node) | |
2872 | types_match = TREE_TYPE (olddecl) == error_mark_node; | |
2873 | else if (TREE_TYPE (olddecl) == NULL_TREE) | |
2874 | types_match = TREE_TYPE (newdecl) == NULL_TREE; | |
a0a33927 MS |
2875 | else if (TREE_TYPE (newdecl) == NULL_TREE) |
2876 | types_match = 0; | |
8d08fdba | 2877 | else |
01240200 | 2878 | types_match = comptypes (TREE_TYPE (newdecl), |
3bfdc719 MM |
2879 | TREE_TYPE (olddecl), |
2880 | COMPARE_REDECLARATION); | |
8d08fdba MS |
2881 | } |
2882 | ||
2883 | return types_match; | |
2884 | } | |
2885 | ||
2886 | /* If NEWDECL is `static' and an `extern' was seen previously, | |
24f30ed4 | 2887 | warn about it. OLDDECL is the previous declaration. |
8d08fdba MS |
2888 | |
2889 | Note that this does not apply to the C++ case of declaring | |
2890 | a variable `extern const' and then later `const'. | |
2891 | ||
8d08fdba MS |
2892 | Don't complain about built-in functions, since they are beyond |
2893 | the user's control. */ | |
2894 | ||
2895 | static void | |
2896 | warn_extern_redeclared_static (newdecl, olddecl) | |
2897 | tree newdecl, olddecl; | |
2898 | { | |
d8e178a0 | 2899 | static const char *explicit_extern_static_warning |
8251199e | 2900 | = "`%D' was declared `extern' and later `static'"; |
d8e178a0 | 2901 | static const char *implicit_extern_static_warning |
8251199e JM |
2902 | = "`%D' was declared implicitly `extern' and later `static'"; |
2903 | ||
24f30ed4 MM |
2904 | tree name; |
2905 | ||
68642fb6 | 2906 | if (TREE_CODE (newdecl) == TYPE_DECL |
7c355bca | 2907 | || TREE_CODE (newdecl) == TEMPLATE_DECL) |
8d08fdba | 2908 | return; |
68642fb6 | 2909 | |
963d5758 MM |
2910 | /* Don't get confused by static member functions; that's a different |
2911 | use of `static'. */ | |
2912 | if (TREE_CODE (newdecl) == FUNCTION_DECL | |
2913 | && DECL_STATIC_FUNCTION_P (newdecl)) | |
2914 | return; | |
8d08fdba | 2915 | |
24f30ed4 MM |
2916 | /* If the old declaration was `static', or the new one isn't, then |
2917 | then everything is OK. */ | |
2918 | if (DECL_THIS_STATIC (olddecl) || !DECL_THIS_STATIC (newdecl)) | |
2919 | return; | |
2920 | ||
2921 | /* It's OK to declare a builtin function as `static'. */ | |
2922 | if (TREE_CODE (olddecl) == FUNCTION_DECL | |
2923 | && DECL_ARTIFICIAL (olddecl)) | |
2924 | return; | |
2925 | ||
8d08fdba | 2926 | name = DECL_ASSEMBLER_NAME (newdecl); |
24f30ed4 MM |
2927 | cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name) |
2928 | ? implicit_extern_static_warning | |
2929 | : explicit_extern_static_warning, newdecl); | |
2930 | cp_pedwarn_at ("previous declaration of `%D'", olddecl); | |
8d08fdba MS |
2931 | } |
2932 | ||
2933 | /* Handle when a new declaration NEWDECL has the same name as an old | |
2934 | one OLDDECL in the same binding contour. Prints an error message | |
2935 | if appropriate. | |
2936 | ||
2937 | If safely possible, alter OLDDECL to look like NEWDECL, and return 1. | |
2938 | Otherwise, return 0. */ | |
2939 | ||
51c184be | 2940 | int |
8d08fdba | 2941 | duplicate_decls (newdecl, olddecl) |
824b9a4c | 2942 | tree newdecl, olddecl; |
8d08fdba | 2943 | { |
8d08fdba MS |
2944 | unsigned olddecl_uid = DECL_UID (olddecl); |
2945 | int olddecl_friend = 0, types_match = 0; | |
0b60dfe3 | 2946 | int new_defines_function = 0; |
5566b478 MS |
2947 | |
2948 | if (newdecl == olddecl) | |
2949 | return 1; | |
8d08fdba | 2950 | |
8926095f | 2951 | types_match = decls_match (newdecl, olddecl); |
8d08fdba | 2952 | |
8d08fdba MS |
2953 | /* If either the type of the new decl or the type of the old decl is an |
2954 | error_mark_node, then that implies that we have already issued an | |
2955 | error (earlier) for some bogus type specification, and in that case, | |
2956 | it is rather pointless to harass the user with yet more error message | |
0b60dfe3 | 2957 | about the same declaration, so just pretend the types match here. */ |
bd6dd845 MS |
2958 | if (TREE_TYPE (newdecl) == error_mark_node |
2959 | || TREE_TYPE (olddecl) == error_mark_node) | |
8d08fdba | 2960 | types_match = 1; |
68642fb6 | 2961 | |
0b60dfe3 | 2962 | /* Check for redeclaration and other discrepancies. */ |
d22c8596 | 2963 | if (TREE_CODE (olddecl) == FUNCTION_DECL |
9f33663b JM |
2964 | && DECL_ARTIFICIAL (olddecl)) |
2965 | { | |
2966 | if (TREE_CODE (newdecl) != FUNCTION_DECL) | |
2967 | { | |
2968 | /* If you declare a built-in or predefined function name as static, | |
2969 | the old definition is overridden, but optionally warn this was a | |
2970 | bad choice of name. */ | |
2971 | if (! TREE_PUBLIC (newdecl)) | |
2972 | { | |
2973 | if (warn_shadow) | |
2974 | cp_warning ("shadowing %s function `%#D'", | |
2975 | DECL_BUILT_IN (olddecl) ? "built-in" : "library", | |
2976 | olddecl); | |
2977 | /* Discard the old built-in function. */ | |
2978 | return 0; | |
2979 | } | |
2980 | /* If the built-in is not ansi, then programs can override | |
2981 | it even globally without an error. */ | |
2982 | else if (! DECL_BUILT_IN (olddecl)) | |
2983 | cp_warning ("library function `%#D' redeclared as non-function `%#D'", | |
2984 | olddecl, newdecl); | |
2985 | else | |
2986 | { | |
2987 | cp_error ("declaration of `%#D'", newdecl); | |
2988 | cp_error ("conflicts with built-in declaration `%#D'", | |
a4443a08 | 2989 | olddecl); |
9f33663b | 2990 | } |
a4443a08 MS |
2991 | return 0; |
2992 | } | |
9f33663b | 2993 | else if (!types_match) |
8d08fdba | 2994 | { |
9f33663b JM |
2995 | if ((DECL_LANGUAGE (newdecl) == lang_c |
2996 | && DECL_LANGUAGE (olddecl) == lang_c) | |
2997 | || compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)), | |
2998 | TYPE_ARG_TYPES (TREE_TYPE (olddecl)))) | |
a4443a08 | 2999 | { |
9f33663b JM |
3000 | /* A near match; override the builtin. */ |
3001 | ||
3002 | if (TREE_PUBLIC (newdecl)) | |
a4443a08 | 3003 | { |
9f33663b JM |
3004 | cp_warning ("new declaration `%#D'", newdecl); |
3005 | cp_warning ("ambiguates built-in declaration `%#D'", | |
3006 | olddecl); | |
a4443a08 | 3007 | } |
9f33663b JM |
3008 | else if (warn_shadow) |
3009 | cp_warning ("shadowing %s function `%#D'", | |
3010 | DECL_BUILT_IN (olddecl) ? "built-in" : "library", | |
3011 | olddecl); | |
a4443a08 | 3012 | } |
9f33663b JM |
3013 | else |
3014 | /* Discard the old built-in function. */ | |
3015 | return 0; | |
8d08fdba | 3016 | } |
68642fb6 | 3017 | |
24f30ed4 MM |
3018 | if (DECL_THIS_STATIC (newdecl) && !DECL_THIS_STATIC (olddecl)) |
3019 | { | |
3020 | /* If a builtin function is redeclared as `static', merge | |
3021 | the declarations, but make the original one static. */ | |
3022 | DECL_THIS_STATIC (olddecl) = 1; | |
3023 | TREE_PUBLIC (olddecl) = 0; | |
9bfadf57 MM |
3024 | |
3025 | /* Make the olddeclaration consistent with the new one so that | |
3026 | all remnants of the builtin-ness of this function will be | |
3027 | banished. */ | |
3028 | DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl); | |
3029 | DECL_RTL (olddecl) = DECL_RTL (newdecl); | |
3030 | DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl); | |
3031 | SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (newdecl), | |
3032 | newdecl); | |
24f30ed4 | 3033 | } |
39211cd5 MS |
3034 | } |
3035 | else if (TREE_CODE (olddecl) != TREE_CODE (newdecl)) | |
3036 | { | |
9ed182dc JM |
3037 | if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl) |
3038 | && TREE_CODE (newdecl) != TYPE_DECL | |
3039 | && ! (TREE_CODE (newdecl) == TEMPLATE_DECL | |
3040 | && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)) | |
3041 | || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl) | |
3042 | && TREE_CODE (olddecl) != TYPE_DECL | |
3043 | && ! (TREE_CODE (olddecl) == TEMPLATE_DECL | |
3044 | && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) | |
3045 | == TYPE_DECL)))) | |
3046 | { | |
3047 | /* We do nothing special here, because C++ does such nasty | |
3048 | things with TYPE_DECLs. Instead, just let the TYPE_DECL | |
3049 | get shadowed, and know that if we need to find a TYPE_DECL | |
3050 | for a given name, we can look in the IDENTIFIER_TYPE_VALUE | |
3051 | slot of the identifier. */ | |
3052 | return 0; | |
3053 | } | |
3054 | ||
39211cd5 | 3055 | if ((TREE_CODE (newdecl) == FUNCTION_DECL |
5566b478 | 3056 | && DECL_FUNCTION_TEMPLATE_P (olddecl)) |
39211cd5 | 3057 | || (TREE_CODE (olddecl) == FUNCTION_DECL |
5566b478 | 3058 | && DECL_FUNCTION_TEMPLATE_P (newdecl))) |
39211cd5 | 3059 | return 0; |
9ed182dc | 3060 | |
8251199e | 3061 | cp_error ("`%#D' redeclared as different kind of symbol", newdecl); |
39211cd5 MS |
3062 | if (TREE_CODE (olddecl) == TREE_LIST) |
3063 | olddecl = TREE_VALUE (olddecl); | |
8251199e | 3064 | cp_error_at ("previous declaration of `%#D'", olddecl); |
39211cd5 MS |
3065 | |
3066 | /* New decl is completely inconsistent with the old one => | |
3067 | tell caller to replace the old one. */ | |
3068 | ||
3069 | return 0; | |
8d08fdba | 3070 | } |
8d08fdba MS |
3071 | else if (!types_match) |
3072 | { | |
7bdbfa05 MM |
3073 | if (DECL_REAL_CONTEXT (newdecl) != DECL_REAL_CONTEXT (olddecl)) |
3074 | /* These are certainly not duplicate declarations; they're | |
3075 | from different scopes. */ | |
3076 | return 0; | |
3077 | ||
8926095f | 3078 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
f0e01782 MS |
3079 | { |
3080 | /* The name of a class template may not be declared to refer to | |
3081 | any other template, class, function, object, namespace, value, | |
e92cc029 | 3082 | or type in the same scope. */ |
5566b478 MS |
3083 | if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL |
3084 | || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) | |
f0e01782 | 3085 | { |
8251199e JM |
3086 | cp_error ("declaration of template `%#D'", newdecl); |
3087 | cp_error_at ("conflicts with previous declaration `%#D'", | |
f0e01782 MS |
3088 | olddecl); |
3089 | } | |
ec255269 MS |
3090 | else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL |
3091 | && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL | |
3092 | && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))), | |
91063b51 | 3093 | TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl)))) |
75650646 MM |
3094 | && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl), |
3095 | DECL_TEMPLATE_PARMS (olddecl))) | |
ec255269 | 3096 | { |
8251199e JM |
3097 | cp_error ("new declaration `%#D'", newdecl); |
3098 | cp_error_at ("ambiguates old declaration `%#D'", olddecl); | |
ec255269 | 3099 | } |
f0e01782 MS |
3100 | return 0; |
3101 | } | |
8926095f MS |
3102 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3103 | { | |
3104 | if (DECL_LANGUAGE (newdecl) == lang_c | |
3105 | && DECL_LANGUAGE (olddecl) == lang_c) | |
3106 | { | |
8251199e | 3107 | cp_error ("declaration of C function `%#D' conflicts with", |
8926095f | 3108 | newdecl); |
8251199e | 3109 | cp_error_at ("previous declaration `%#D' here", olddecl); |
8926095f | 3110 | } |
00595019 | 3111 | else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)), |
91063b51 | 3112 | TYPE_ARG_TYPES (TREE_TYPE (olddecl)))) |
700f8a87 | 3113 | { |
8251199e JM |
3114 | cp_error ("new declaration `%#D'", newdecl); |
3115 | cp_error_at ("ambiguates old declaration `%#D'", olddecl); | |
700f8a87 MS |
3116 | } |
3117 | else | |
3118 | return 0; | |
8926095f | 3119 | } |
8d08fdba MS |
3120 | |
3121 | /* Already complained about this, so don't do so again. */ | |
a4443a08 | 3122 | else if (current_class_type == NULL_TREE |
8d08fdba MS |
3123 | || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type) |
3124 | { | |
8251199e JM |
3125 | cp_error ("conflicting types for `%#D'", newdecl); |
3126 | cp_error_at ("previous declaration as `%#D'", olddecl); | |
8d08fdba MS |
3127 | } |
3128 | } | |
68642fb6 | 3129 | else if (TREE_CODE (newdecl) == FUNCTION_DECL |
75650646 MM |
3130 | && ((DECL_TEMPLATE_SPECIALIZATION (olddecl) |
3131 | && (!DECL_TEMPLATE_INFO (newdecl) | |
68642fb6 | 3132 | || (DECL_TI_TEMPLATE (newdecl) |
75650646 MM |
3133 | != DECL_TI_TEMPLATE (olddecl)))) |
3134 | || (DECL_TEMPLATE_SPECIALIZATION (newdecl) | |
3135 | && (!DECL_TEMPLATE_INFO (olddecl) | |
68642fb6 | 3136 | || (DECL_TI_TEMPLATE (olddecl) |
75650646 | 3137 | != DECL_TI_TEMPLATE (newdecl)))))) |
386b8a85 JM |
3138 | /* It's OK to have a template specialization and a non-template |
3139 | with the same type, or to have specializations of two | |
75650646 MM |
3140 | different templates with the same type. Note that if one is a |
3141 | specialization, and the other is an instantiation of the same | |
3142 | template, that we do not exit at this point. That situation | |
3143 | can occur if we instantiate a template class, and then | |
3144 | specialize one of its methods. This situation is legal, but | |
3145 | the declarations must be merged in the usual way. */ | |
3146 | return 0; | |
68642fb6 UD |
3147 | else if (TREE_CODE (newdecl) == FUNCTION_DECL |
3148 | && ((DECL_TEMPLATE_INSTANTIATION (olddecl) | |
75650646 MM |
3149 | && !DECL_USE_TEMPLATE (newdecl)) |
3150 | || (DECL_TEMPLATE_INSTANTIATION (newdecl) | |
3151 | && !DECL_USE_TEMPLATE (olddecl)))) | |
3152 | /* One of the declarations is a template instantiation, and the | |
3153 | other is not a template at all. That's OK. */ | |
386b8a85 | 3154 | return 0; |
85c6cbaf ML |
3155 | else if (TREE_CODE (newdecl) == NAMESPACE_DECL |
3156 | && DECL_NAMESPACE_ALIAS (newdecl) | |
3157 | && DECL_NAMESPACE_ALIAS (newdecl) == DECL_NAMESPACE_ALIAS (olddecl)) | |
3158 | /* Redeclaration of namespace alias, ignore it. */ | |
3159 | return 1; | |
8d08fdba MS |
3160 | else |
3161 | { | |
d8e178a0 | 3162 | const char *errmsg = redeclaration_error_message (newdecl, olddecl); |
8251199e | 3163 | if (errmsg) |
8d08fdba | 3164 | { |
8251199e | 3165 | cp_error (errmsg, newdecl); |
8d08fdba MS |
3166 | if (DECL_NAME (olddecl) != NULL_TREE) |
3167 | cp_error_at ((DECL_INITIAL (olddecl) | |
2c73f9f5 | 3168 | && namespace_bindings_p ()) |
8251199e JM |
3169 | ? "`%#D' previously defined here" |
3170 | : "`%#D' previously declared here", olddecl); | |
8d08fdba MS |
3171 | } |
3172 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
3173 | && DECL_INITIAL (olddecl) != NULL_TREE | |
3174 | && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE | |
3175 | && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE) | |
3176 | { | |
3177 | /* Prototype decl follows defn w/o prototype. */ | |
8251199e JM |
3178 | cp_warning_at ("prototype for `%#D'", newdecl); |
3179 | cp_warning_at ("follows non-prototype definition here", olddecl); | |
8d08fdba MS |
3180 | } |
3181 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
3182 | && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)) | |
8926095f MS |
3183 | { |
3184 | /* extern "C" int foo (); | |
3185 | int foo () { bar (); } | |
3186 | is OK. */ | |
9cd64686 MM |
3187 | if (current_lang_stack |
3188 | == &VARRAY_TREE (current_lang_base, 0)) | |
a28e3c7f | 3189 | DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl); |
8926095f MS |
3190 | else |
3191 | { | |
8251199e | 3192 | cp_error_at ("previous declaration of `%#D' with %L linkage", |
8926095f | 3193 | olddecl, DECL_LANGUAGE (olddecl)); |
8251199e | 3194 | cp_error ("conflicts with new declaration with %L linkage", |
8926095f MS |
3195 | DECL_LANGUAGE (newdecl)); |
3196 | } | |
3197 | } | |
e1cd6e56 | 3198 | |
a6f02587 | 3199 | if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl)) |
c32381b1 JM |
3200 | ; |
3201 | else if (TREE_CODE (olddecl) == FUNCTION_DECL) | |
e1cd6e56 MS |
3202 | { |
3203 | tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl)); | |
3204 | tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)); | |
3205 | int i = 1; | |
3206 | ||
3207 | if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE) | |
3208 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2); | |
68642fb6 | 3209 | |
e1cd6e56 MS |
3210 | for (; t1 && t1 != void_list_node; |
3211 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++) | |
3212 | if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2)) | |
3213 | { | |
2507f3b5 RK |
3214 | if (1 == simple_cst_equal (TREE_PURPOSE (t1), |
3215 | TREE_PURPOSE (t2))) | |
e1cd6e56 MS |
3216 | { |
3217 | if (pedantic) | |
3218 | { | |
8251199e | 3219 | cp_pedwarn ("default argument given for parameter %d of `%#D'", |
e1cd6e56 | 3220 | i, newdecl); |
8251199e | 3221 | cp_pedwarn_at ("after previous specification in `%#D'", |
e1cd6e56 MS |
3222 | olddecl); |
3223 | } | |
3224 | } | |
3225 | else | |
3226 | { | |
8251199e | 3227 | cp_error ("default argument given for parameter %d of `%#D'", |
e1cd6e56 | 3228 | i, newdecl); |
8251199e | 3229 | cp_error_at ("after previous specification in `%#D'", |
e1cd6e56 MS |
3230 | olddecl); |
3231 | } | |
3232 | } | |
a5894242 | 3233 | |
7fcdf4c2 MS |
3234 | if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl) |
3235 | && TREE_ADDRESSABLE (olddecl) && warn_inline) | |
dff6b454 | 3236 | { |
8251199e | 3237 | cp_warning ("`%#D' was used before it was declared inline", |
7fcdf4c2 | 3238 | newdecl); |
8251199e | 3239 | cp_warning_at ("previous non-inline declaration here", |
7fcdf4c2 | 3240 | olddecl); |
dff6b454 | 3241 | } |
e1cd6e56 | 3242 | } |
8d08fdba MS |
3243 | } |
3244 | ||
3245 | /* If new decl is `static' and an `extern' was seen previously, | |
3246 | warn about it. */ | |
3247 | warn_extern_redeclared_static (newdecl, olddecl); | |
3248 | ||
e92cc029 | 3249 | /* We have committed to returning 1 at this point. */ |
8d08fdba MS |
3250 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3251 | { | |
3252 | /* Now that functions must hold information normally held | |
3253 | by field decls, there is extra work to do so that | |
3254 | declaration information does not get destroyed during | |
3255 | definition. */ | |
3256 | if (DECL_VINDEX (olddecl)) | |
3257 | DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl); | |
3258 | if (DECL_CONTEXT (olddecl)) | |
3259 | DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl); | |
3260 | if (DECL_CLASS_CONTEXT (olddecl)) | |
3261 | DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl); | |
8d08fdba MS |
3262 | if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0) |
3263 | DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl); | |
e1cd6e56 MS |
3264 | DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl); |
3265 | DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl); | |
fee7654e | 3266 | DECL_PURE_VIRTUAL_P (newdecl) |= DECL_PURE_VIRTUAL_P (olddecl); |
864b83b9 | 3267 | DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl); |
4a67c9e9 | 3268 | DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl); |
963d5758 | 3269 | DECL_THIS_STATIC (newdecl) |= DECL_THIS_STATIC (olddecl); |
0b60dfe3 | 3270 | new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE; |
68642fb6 | 3271 | |
0b60dfe3 BK |
3272 | /* Optionally warn about more than one declaration for the same |
3273 | name, but don't warn about a function declaration followed by a | |
3274 | definition. */ | |
3275 | if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl) | |
3276 | && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE) | |
3277 | /* Don't warn about extern decl followed by definition. */ | |
3278 | && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl)) | |
3279 | /* Don't warn about friends, let add_friend take care of it. */ | |
3280 | && ! DECL_FRIEND_P (newdecl)) | |
3281 | { | |
8251199e JM |
3282 | cp_warning ("redundant redeclaration of `%D' in same scope", newdecl); |
3283 | cp_warning_at ("previous declaration of `%D'", olddecl); | |
0b60dfe3 | 3284 | } |
8d08fdba MS |
3285 | } |
3286 | ||
3287 | /* Deal with C++: must preserve virtual function table size. */ | |
3288 | if (TREE_CODE (olddecl) == TYPE_DECL) | |
3289 | { | |
3290 | register tree newtype = TREE_TYPE (newdecl); | |
3291 | register tree oldtype = TREE_TYPE (olddecl); | |
3292 | ||
3293 | if (newtype != error_mark_node && oldtype != error_mark_node | |
3294 | && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype)) | |
3295 | { | |
3296 | CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype); | |
3297 | CLASSTYPE_FRIEND_CLASSES (newtype) | |
3298 | = CLASSTYPE_FRIEND_CLASSES (oldtype); | |
3299 | } | |
8d08fdba MS |
3300 | } |
3301 | ||
8d08fdba MS |
3302 | /* Copy all the DECL_... slots specified in the new decl |
3303 | except for any that we copy here from the old type. */ | |
68642fb6 | 3304 | DECL_MACHINE_ATTRIBUTES (newdecl) |
0b60dfe3 | 3305 | = merge_machine_decl_attributes (olddecl, newdecl); |
8d08fdba | 3306 | |
5566b478 MS |
3307 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
3308 | { | |
4d85e00e MM |
3309 | if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl), |
3310 | DECL_TEMPLATE_RESULT (olddecl))) | |
8251199e | 3311 | cp_error ("invalid redeclaration of %D", newdecl); |
4d85e00e | 3312 | TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl)); |
68642fb6 | 3313 | DECL_TEMPLATE_SPECIALIZATIONS (olddecl) |
4d85e00e MM |
3314 | = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl), |
3315 | DECL_TEMPLATE_SPECIALIZATIONS (newdecl)); | |
68642fb6 | 3316 | |
5566b478 MS |
3317 | return 1; |
3318 | } | |
68642fb6 | 3319 | |
8d08fdba MS |
3320 | if (types_match) |
3321 | { | |
3322 | /* Automatically handles default parameters. */ | |
3323 | tree oldtype = TREE_TYPE (olddecl); | |
e1cd6e56 | 3324 | tree newtype; |
8d08fdba | 3325 | |
e1cd6e56 MS |
3326 | /* Merge the data types specified in the two decls. */ |
3327 | newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl)); | |
3328 | ||
8d08fdba MS |
3329 | if (TREE_CODE (newdecl) == VAR_DECL) |
3330 | DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl); | |
3331 | /* Do this after calling `common_type' so that default | |
3332 | parameters don't confuse us. */ | |
3333 | else if (TREE_CODE (newdecl) == FUNCTION_DECL | |
3334 | && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)) | |
3335 | != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)))) | |
3336 | { | |
f30432d7 | 3337 | TREE_TYPE (newdecl) = build_exception_variant (newtype, |
8d08fdba | 3338 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))); |
f30432d7 | 3339 | TREE_TYPE (olddecl) = build_exception_variant (newtype, |
8d08fdba MS |
3340 | TYPE_RAISES_EXCEPTIONS (oldtype)); |
3341 | ||
9a224b4a JM |
3342 | if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl)) |
3343 | && DECL_SOURCE_LINE (olddecl) != 0 | |
da20811c | 3344 | && flag_exceptions |
4cc1d462 NS |
3345 | && !comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)), |
3346 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)), 1)) | |
8d08fdba | 3347 | { |
4cc1d462 | 3348 | cp_error ("declaration of `%F' throws different exceptions", |
a28e3c7f | 3349 | newdecl); |
a09ba2e0 | 3350 | cp_error_at ("than previous declaration `%F'", olddecl); |
8d08fdba MS |
3351 | } |
3352 | } | |
3353 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype; | |
3354 | ||
3355 | /* Lay the type out, unless already done. */ | |
407f03b8 | 3356 | if (! same_type_p (newtype, oldtype) |
5566b478 | 3357 | && TREE_TYPE (newdecl) != error_mark_node |
5156628f | 3358 | && !(processing_template_decl && uses_template_parms (newdecl))) |
b7484fbe MS |
3359 | layout_type (TREE_TYPE (newdecl)); |
3360 | ||
5566b478 MS |
3361 | if ((TREE_CODE (newdecl) == VAR_DECL |
3362 | || TREE_CODE (newdecl) == PARM_DECL | |
3363 | || TREE_CODE (newdecl) == RESULT_DECL | |
3364 | || TREE_CODE (newdecl) == FIELD_DECL | |
3365 | || TREE_CODE (newdecl) == TYPE_DECL) | |
5156628f | 3366 | && !(processing_template_decl && uses_template_parms (newdecl))) |
b7484fbe | 3367 | layout_decl (newdecl, 0); |
8d08fdba MS |
3368 | |
3369 | /* Merge the type qualifiers. */ | |
3370 | if (TREE_READONLY (newdecl)) | |
3371 | TREE_READONLY (olddecl) = 1; | |
3372 | if (TREE_THIS_VOLATILE (newdecl)) | |
3373 | TREE_THIS_VOLATILE (olddecl) = 1; | |
3374 | ||
3375 | /* Merge the initialization information. */ | |
8926095f MS |
3376 | if (DECL_INITIAL (newdecl) == NULL_TREE |
3377 | && DECL_INITIAL (olddecl) != NULL_TREE) | |
3378 | { | |
3379 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
3380 | DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl); | |
3381 | DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl); | |
b0d06515 MM |
3382 | if (CAN_HAVE_FULL_LANG_DECL_P (newdecl) |
3383 | && DECL_LANG_SPECIFIC (newdecl) | |
4d85e00e MM |
3384 | && DECL_LANG_SPECIFIC (olddecl)) |
3385 | DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl); | |
8926095f | 3386 | } |
39211cd5 MS |
3387 | |
3388 | /* Merge the section attribute. | |
3389 | We want to issue an error if the sections conflict but that must be | |
3390 | done later in decl_attributes since we are called before attributes | |
3391 | are assigned. */ | |
3392 | if (DECL_SECTION_NAME (newdecl) == NULL_TREE) | |
3393 | DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl); | |
3394 | ||
5d73aa63 MM |
3395 | /* Keep the old rtl since we can safely use it. */ |
3396 | DECL_RTL (newdecl) = DECL_RTL (olddecl); | |
a157febd GK |
3397 | |
3398 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
3399 | { | |
3400 | DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl) | |
3401 | |= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl); | |
3402 | DECL_NO_CHECK_MEMORY_USAGE (newdecl) | |
3403 | |= DECL_NO_CHECK_MEMORY_USAGE (olddecl); | |
3404 | DECL_NO_LIMIT_STACK (newdecl) | |
3405 | |= DECL_NO_LIMIT_STACK (olddecl); | |
3406 | } | |
8d08fdba MS |
3407 | } |
3408 | /* If cannot merge, then use the new type and qualifiers, | |
3409 | and don't preserve the old rtl. */ | |
3410 | else | |
3411 | { | |
3412 | /* Clean out any memory we had of the old declaration. */ | |
3413 | tree oldstatic = value_member (olddecl, static_aggregates); | |
3414 | if (oldstatic) | |
3415 | TREE_VALUE (oldstatic) = error_mark_node; | |
3416 | ||
3417 | TREE_TYPE (olddecl) = TREE_TYPE (newdecl); | |
3418 | TREE_READONLY (olddecl) = TREE_READONLY (newdecl); | |
3419 | TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl); | |
3420 | TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl); | |
3421 | } | |
3422 | ||
3423 | /* Merge the storage class information. */ | |
a9aedbc2 | 3424 | DECL_WEAK (newdecl) |= DECL_WEAK (olddecl); |
e92cc029 | 3425 | DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl); |
794d4a61 | 3426 | DECL_DEFER_OUTPUT (newdecl) |= DECL_DEFER_OUTPUT (olddecl); |
a9aedbc2 MS |
3427 | TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl); |
3428 | TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl); | |
3429 | if (! DECL_EXTERNAL (olddecl)) | |
3430 | DECL_EXTERNAL (newdecl) = 0; | |
68642fb6 | 3431 | |
0b60dfe3 | 3432 | if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl)) |
8d08fdba | 3433 | { |
a9aedbc2 MS |
3434 | DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl); |
3435 | DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl); | |
77be6f82 | 3436 | DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl); |
68642fb6 | 3437 | DECL_TEMPLATE_INSTANTIATED (newdecl) |
2b0a63a3 | 3438 | |= DECL_TEMPLATE_INSTANTIATED (olddecl); |
0b60dfe3 BK |
3439 | /* Don't really know how much of the language-specific |
3440 | values we should copy from old to new. */ | |
3441 | DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl); | |
3442 | DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl); | |
3443 | DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl); | |
fbf1c34b | 3444 | DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl); |
0b60dfe3 | 3445 | olddecl_friend = DECL_FRIEND_P (olddecl); |
6a629cac MM |
3446 | |
3447 | /* Only functions have DECL_BEFRIENDING_CLASSES. */ | |
3448 | if (TREE_CODE (newdecl) == FUNCTION_DECL | |
3449 | || DECL_FUNCTION_TEMPLATE_P (newdecl)) | |
3450 | DECL_BEFRIENDING_CLASSES (newdecl) | |
3451 | = chainon (DECL_BEFRIENDING_CLASSES (newdecl), | |
3452 | DECL_BEFRIENDING_CLASSES (olddecl)); | |
8d08fdba MS |
3453 | } |
3454 | ||
8d08fdba MS |
3455 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3456 | { | |
68642fb6 UD |
3457 | if (DECL_TEMPLATE_INSTANTIATION (olddecl) |
3458 | && !DECL_TEMPLATE_INSTANTIATION (newdecl)) | |
75650646 MM |
3459 | { |
3460 | /* If newdecl is not a specialization, then it is not a | |
3461 | template-related function at all. And that means that we | |
3462 | shoud have exited above, returning 0. */ | |
3463 | my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl), | |
3464 | 0); | |
3465 | ||
68642fb6 | 3466 | if (TREE_USED (olddecl)) |
75650646 | 3467 | /* From [temp.expl.spec]: |
68642fb6 | 3468 | |
75650646 MM |
3469 | If a template, a member template or the member of a class |
3470 | template is explicitly specialized then that | |
3471 | specialization shall be declared before the first use of | |
3472 | that specialization that would cause an implicit | |
3473 | instantiation to take place, in every translation unit in | |
3474 | which such a use occurs. */ | |
68642fb6 | 3475 | cp_error ("explicit specialization of %D after first use", |
75650646 MM |
3476 | olddecl); |
3477 | ||
3478 | SET_DECL_TEMPLATE_SPECIALIZATION (olddecl); | |
3479 | } | |
faae18ab MS |
3480 | DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl); |
3481 | ||
3482 | /* If either decl says `inline', this fn is inline, unless its | |
3483 | definition was passed already. */ | |
3484 | if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE) | |
3485 | DECL_INLINE (olddecl) = 1; | |
3486 | DECL_INLINE (newdecl) = DECL_INLINE (olddecl); | |
3487 | ||
700f8a87 MS |
3488 | if (! types_match) |
3489 | { | |
3490 | DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl); | |
3491 | DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl); | |
5566b478 MS |
3492 | DECL_RTL (olddecl) = DECL_RTL (newdecl); |
3493 | } | |
3494 | if (! types_match || new_defines_function) | |
3495 | { | |
6f1b4c42 JM |
3496 | /* These need to be copied so that the names are available. |
3497 | Note that if the types do match, we'll preserve inline | |
3498 | info and other bits, but if not, we won't. */ | |
700f8a87 MS |
3499 | DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl); |
3500 | DECL_RESULT (olddecl) = DECL_RESULT (newdecl); | |
700f8a87 | 3501 | } |
8d08fdba MS |
3502 | if (new_defines_function) |
3503 | /* If defining a function declared with other language | |
3504 | linkage, use the previously declared language linkage. */ | |
3505 | DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl); | |
6f1b4c42 | 3506 | else if (types_match) |
8d08fdba MS |
3507 | { |
3508 | /* If redeclaring a builtin function, and not a definition, | |
3509 | it stays built in. */ | |
3510 | if (DECL_BUILT_IN (olddecl)) | |
3511 | { | |
26db82d8 | 3512 | DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl); |
39211cd5 | 3513 | DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl); |
8d08fdba MS |
3514 | /* If we're keeping the built-in definition, keep the rtl, |
3515 | regardless of declaration matches. */ | |
3516 | DECL_RTL (newdecl) = DECL_RTL (olddecl); | |
3517 | } | |
3518 | else | |
3519 | DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl); | |
3520 | ||
3521 | DECL_RESULT (newdecl) = DECL_RESULT (olddecl); | |
8926095f | 3522 | if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl))) |
8d08fdba MS |
3523 | /* Previously saved insns go together with |
3524 | the function's previous definition. */ | |
3525 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
3526 | /* Don't clear out the arguments if we're redefining a function. */ | |
3527 | if (DECL_ARGUMENTS (olddecl)) | |
3528 | DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl); | |
3529 | } | |
6060a796 MS |
3530 | if (DECL_LANG_SPECIFIC (olddecl)) |
3531 | DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl); | |
8d08fdba MS |
3532 | } |
3533 | ||
a9aedbc2 MS |
3534 | if (TREE_CODE (newdecl) == NAMESPACE_DECL) |
3535 | { | |
3536 | NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl); | |
3537 | } | |
3538 | ||
8d08fdba MS |
3539 | /* Now preserve various other info from the definition. */ |
3540 | TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl); | |
3541 | TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl); | |
3542 | DECL_COMMON (newdecl) = DECL_COMMON (olddecl); | |
f376e137 | 3543 | DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl); |
8d08fdba | 3544 | |
8d08fdba MS |
3545 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3546 | { | |
3547 | int function_size; | |
8d08fdba MS |
3548 | |
3549 | function_size = sizeof (struct tree_decl); | |
3550 | ||
3551 | bcopy ((char *) newdecl + sizeof (struct tree_common), | |
3552 | (char *) olddecl + sizeof (struct tree_common), | |
3553 | function_size - sizeof (struct tree_common)); | |
3554 | ||
75650646 MM |
3555 | if (DECL_TEMPLATE_INSTANTIATION (newdecl)) |
3556 | { | |
3557 | /* If newdecl is a template instantiation, it is possible that | |
3558 | the following sequence of events has occurred: | |
3559 | ||
3560 | o A friend function was declared in a class template. The | |
68642fb6 | 3561 | class template was instantiated. |
75650646 | 3562 | |
68642fb6 UD |
3563 | o The instantiation of the friend declaration was |
3564 | recorded on the instantiation list, and is newdecl. | |
75650646 MM |
3565 | |
3566 | o Later, however, instantiate_class_template called pushdecl | |
3567 | on the newdecl to perform name injection. But, pushdecl in | |
3568 | turn called duplicate_decls when it discovered that another | |
3569 | declaration of a global function with the same name already | |
68642fb6 | 3570 | existed. |
75650646 MM |
3571 | |
3572 | o Here, in duplicate_decls, we decided to clobber newdecl. | |
3573 | ||
3574 | If we're going to do that, we'd better make sure that | |
3575 | olddecl, and not newdecl, is on the list of | |
3576 | instantiations so that if we try to do the instantiation | |
3577 | again we won't get the clobbered declaration. */ | |
3578 | ||
68642fb6 UD |
3579 | tree tmpl = DECL_TI_TEMPLATE (newdecl); |
3580 | tree decls = DECL_TEMPLATE_SPECIALIZATIONS (tmpl); | |
75650646 MM |
3581 | |
3582 | for (; decls; decls = TREE_CHAIN (decls)) | |
3583 | if (TREE_VALUE (decls) == newdecl) | |
3584 | TREE_VALUE (decls) = olddecl; | |
3585 | } | |
8d08fdba MS |
3586 | } |
3587 | else | |
3588 | { | |
3589 | bcopy ((char *) newdecl + sizeof (struct tree_common), | |
3590 | (char *) olddecl + sizeof (struct tree_common), | |
3591 | sizeof (struct tree_decl) - sizeof (struct tree_common) | |
3592 | + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *)); | |
3593 | } | |
3594 | ||
3595 | DECL_UID (olddecl) = olddecl_uid; | |
3596 | if (olddecl_friend) | |
3597 | DECL_FRIEND_P (olddecl) = 1; | |
3598 | ||
d9525bec BK |
3599 | /* NEWDECL contains the merged attribute lists. |
3600 | Update OLDDECL to be the same. */ | |
3601 | DECL_MACHINE_ATTRIBUTES (olddecl) = DECL_MACHINE_ATTRIBUTES (newdecl); | |
3602 | ||
8d08fdba MS |
3603 | return 1; |
3604 | } | |
3605 | ||
3606 | /* Record a decl-node X as belonging to the current lexical scope. | |
3607 | Check for errors (such as an incompatible declaration for the same | |
3608 | name already seen in the same scope). | |
3609 | ||
3610 | Returns either X or an old decl for the same name. | |
3611 | If an old decl is returned, it may have been smashed | |
3612 | to agree with what X says. */ | |
3613 | ||
3614 | tree | |
3615 | pushdecl (x) | |
3616 | tree x; | |
3617 | { | |
3618 | register tree t; | |
b35d4555 MM |
3619 | register tree name; |
3620 | int need_new_binding; | |
3621 | ||
3622 | /* We shouldn't be calling pushdecl when we're generating RTL for a | |
3623 | function that we already did semantic analysis on previously. */ | |
01d939e8 | 3624 | my_friendly_assert (!cfun || doing_semantic_analysis_p (), |
b35d4555 MM |
3625 | 19990913); |
3626 | ||
3627 | name = DECL_ASSEMBLER_NAME (x); | |
3628 | need_new_binding = 1; | |
8d08fdba | 3629 | |
50714e79 MM |
3630 | if (DECL_TEMPLATE_PARM_P (x)) |
3631 | /* Template parameters have no context; they are not X::T even | |
3632 | when declared within a class or namespace. */ | |
3633 | ; | |
3634 | else | |
3635 | { | |
3636 | if (current_function_decl && x != current_function_decl | |
3637 | /* A local declaration for a function doesn't constitute | |
3638 | nesting. */ | |
f39ee884 MM |
3639 | && !(TREE_CODE (x) == FUNCTION_DECL && !DECL_INITIAL (x)) |
3640 | /* A local declaration for an `extern' variable is in the | |
3641 | scoped of the current namespace, not the current | |
3642 | function. */ | |
3643 | && !(TREE_CODE (x) == VAR_DECL && DECL_EXTERNAL (x)) | |
50714e79 MM |
3644 | /* Don't change DECL_CONTEXT of virtual methods. */ |
3645 | && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x)) | |
3646 | && !DECL_CONTEXT (x)) | |
3647 | DECL_CONTEXT (x) = current_function_decl; | |
3648 | if (!DECL_CONTEXT (x)) | |
3649 | DECL_CONTEXT (x) = FROB_CONTEXT (current_namespace); | |
cd9f6678 MM |
3650 | |
3651 | /* If this is the declaration for a namespace-scope function, | |
3652 | but the declaration itself is in a local scope, mark the | |
3653 | declaration. */ | |
68642fb6 | 3654 | if (TREE_CODE (x) == FUNCTION_DECL |
cd9f6678 MM |
3655 | && DECL_NAMESPACE_SCOPE_P (x) |
3656 | && current_function_decl | |
3657 | && x != current_function_decl) | |
3658 | DECL_LOCAL_FUNCTION_P (x) = 1; | |
50714e79 | 3659 | } |
8d08fdba | 3660 | |
8d08fdba | 3661 | /* Type are looked up using the DECL_NAME, as that is what the rest of the |
e92cc029 | 3662 | compiler wants to use. */ |
a9aedbc2 | 3663 | if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL |
0c20d3d6 | 3664 | || TREE_CODE (x) == NAMESPACE_DECL) |
8d08fdba | 3665 | name = DECL_NAME (x); |
8d08fdba MS |
3666 | |
3667 | if (name) | |
3668 | { | |
5566b478 MS |
3669 | #if 0 |
3670 | /* Not needed...see below. */ | |
8d08fdba MS |
3671 | char *file; |
3672 | int line; | |
5566b478 | 3673 | #endif |
386b8a85 JM |
3674 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) |
3675 | name = TREE_OPERAND (name, 0); | |
68642fb6 | 3676 | |
2c73f9f5 | 3677 | /* Namespace-scoped variables are not found in the current level. */ |
6eb3bb27 | 3678 | if (TREE_CODE (x) == VAR_DECL && DECL_NAMESPACE_SCOPE_P (x)) |
2c73f9f5 ML |
3679 | t = namespace_binding (name, DECL_CONTEXT (x)); |
3680 | else | |
3681 | t = lookup_name_current_level (name); | |
8d08fdba MS |
3682 | if (t == error_mark_node) |
3683 | { | |
3684 | /* error_mark_node is 0 for a while during initialization! */ | |
3685 | t = NULL_TREE; | |
8251199e | 3686 | cp_error_at ("`%#D' used prior to declaration", x); |
8d08fdba MS |
3687 | } |
3688 | ||
51c184be | 3689 | else if (t != NULL_TREE) |
8d08fdba | 3690 | { |
5566b478 MS |
3691 | #if 0 |
3692 | /* This is turned off until I have time to do it right (bpk). */ | |
e92cc029 | 3693 | /* With the code below that uses it... */ |
8d6e462b PB |
3694 | file = DECL_SOURCE_FILE (t); |
3695 | line = DECL_SOURCE_LINE (t); | |
5566b478 | 3696 | #endif |
2ee887f2 | 3697 | if (TREE_CODE (t) == PARM_DECL) |
8d08fdba MS |
3698 | { |
3699 | if (DECL_CONTEXT (t) == NULL_TREE) | |
3700 | fatal ("parse errors have confused me too much"); | |
be99da77 | 3701 | |
e92cc029 | 3702 | /* Check for duplicate params. */ |
be99da77 MS |
3703 | if (duplicate_decls (x, t)) |
3704 | return t; | |
8d08fdba | 3705 | } |
8d6e462b | 3706 | else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c) |
5566b478 MS |
3707 | || DECL_FUNCTION_TEMPLATE_P (x)) |
3708 | && is_overloaded_fn (t)) | |
2c73f9f5 | 3709 | /* Don't do anything just yet. */; |
e1cd6e56 MS |
3710 | else if (t == wchar_decl_node) |
3711 | { | |
3712 | if (pedantic && ! DECL_IN_SYSTEM_HEADER (x)) | |
8251199e | 3713 | cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x)); |
e1cd6e56 MS |
3714 | |
3715 | /* Throw away the redeclaration. */ | |
3716 | return t; | |
3717 | } | |
8926095f | 3718 | else if (TREE_CODE (t) != TREE_CODE (x)) |
8d08fdba | 3719 | { |
9ed182dc | 3720 | if (duplicate_decls (x, t)) |
51c184be | 3721 | return t; |
8d08fdba MS |
3722 | } |
3723 | else if (duplicate_decls (x, t)) | |
51c184be | 3724 | { |
8d08fdba | 3725 | #if 0 |
8926095f | 3726 | /* This is turned off until I have time to do it right (bpk). */ |
8d08fdba | 3727 | |
8926095f MS |
3728 | /* Also warn if they did a prototype with `static' on it, but |
3729 | then later left the `static' off. */ | |
3730 | if (! TREE_PUBLIC (name) && TREE_PUBLIC (x)) | |
8d08fdba | 3731 | { |
8926095f MS |
3732 | if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t)) |
3733 | return t; | |
8d08fdba | 3734 | |
8926095f MS |
3735 | if (extra_warnings) |
3736 | { | |
8251199e | 3737 | cp_warning ("`static' missing from declaration of `%D'", |
a28e3c7f | 3738 | t); |
8926095f MS |
3739 | warning_with_file_and_line (file, line, |
3740 | "previous declaration of `%s'", | |
3741 | decl_as_string (t, 0)); | |
3742 | } | |
8d08fdba | 3743 | |
8926095f MS |
3744 | /* Now fix things so it'll do what they expect. */ |
3745 | if (current_function_decl) | |
3746 | TREE_PUBLIC (current_function_decl) = 0; | |
3747 | } | |
51c184be MS |
3748 | /* Due to interference in memory reclamation (X may be |
3749 | obstack-deallocated at this point), we must guard against | |
8926095f MS |
3750 | one really special case. [jason: This should be handled |
3751 | by start_function] */ | |
51c184be MS |
3752 | if (current_function_decl == x) |
3753 | current_function_decl = t; | |
8926095f | 3754 | #endif |
7177d104 MS |
3755 | if (TREE_CODE (t) == TYPE_DECL) |
3756 | SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t)); | |
f30432d7 MS |
3757 | else if (TREE_CODE (t) == FUNCTION_DECL) |
3758 | check_default_args (t); | |
7177d104 | 3759 | |
51c184be MS |
3760 | return t; |
3761 | } | |
35680744 MM |
3762 | else if (DECL_MAIN_P (x)) |
3763 | { | |
3764 | /* A redeclaration of main, but not a duplicate of the | |
68642fb6 | 3765 | previous one. |
35680744 MM |
3766 | |
3767 | [basic.start.main] | |
3768 | ||
3769 | This function shall not be overloaded. */ | |
8251199e JM |
3770 | cp_error_at ("invalid redeclaration of `%D'", t); |
3771 | cp_error ("as `%D'", x); | |
35680744 MM |
3772 | /* We don't try to push this declaration since that |
3773 | causes a crash. */ | |
3774 | return x; | |
3775 | } | |
8d08fdba | 3776 | } |
8926095f | 3777 | |
f3400fe2 JM |
3778 | check_template_shadow (x); |
3779 | ||
fcfcdfc8 JM |
3780 | /* If this is a function conjured up by the backend, massage it |
3781 | so it looks friendly. */ | |
3782 | if (TREE_CODE (x) == FUNCTION_DECL | |
3783 | && ! DECL_LANG_SPECIFIC (x)) | |
3784 | { | |
3785 | retrofit_lang_decl (x); | |
3786 | DECL_LANGUAGE (x) = lang_c; | |
3787 | } | |
3788 | ||
8926095f MS |
3789 | if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x)) |
3790 | { | |
7bdbfa05 | 3791 | t = push_overloaded_decl (x, PUSH_LOCAL); |
5fdaba89 | 3792 | if (t != x) |
8926095f | 3793 | return t; |
f181d4ae MM |
3794 | if (!namespace_bindings_p ()) |
3795 | /* We do not need to create a binding for this name; | |
3796 | push_overloaded_decl will have already done so if | |
3797 | necessary. */ | |
3798 | need_new_binding = 0; | |
8926095f | 3799 | } |
6eb3bb27 | 3800 | else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_NAMESPACE_SCOPE_P (x)) |
cfe507be MM |
3801 | { |
3802 | t = push_overloaded_decl (x, PUSH_GLOBAL); | |
3803 | if (t == x) | |
3804 | add_decl_to_level (x, NAMESPACE_LEVEL (CP_DECL_CONTEXT (t))); | |
3805 | return t; | |
3806 | } | |
8d08fdba | 3807 | |
a1774733 BK |
3808 | /* If declaring a type as a typedef, copy the type (unless we're |
3809 | at line 0), and install this TYPE_DECL as the new type's typedef | |
3810 | name. See the extensive comment in ../c-decl.c (pushdecl). */ | |
8d08fdba MS |
3811 | if (TREE_CODE (x) == TYPE_DECL) |
3812 | { | |
3813 | tree type = TREE_TYPE (x); | |
a1774733 BK |
3814 | if (DECL_SOURCE_LINE (x) == 0) |
3815 | { | |
3816 | if (TYPE_NAME (type) == 0) | |
3817 | TYPE_NAME (type) = x; | |
3818 | } | |
1c80fb65 MM |
3819 | else if (type != error_mark_node && TYPE_NAME (type) != x |
3820 | /* We don't want to copy the type when all we're | |
3821 | doing is making a TYPE_DECL for the purposes of | |
3822 | inlining. */ | |
68642fb6 | 3823 | && (!TYPE_NAME (type) |
1c80fb65 | 3824 | || TYPE_NAME (type) != DECL_ABSTRACT_ORIGIN (x))) |
a1774733 BK |
3825 | { |
3826 | DECL_ORIGINAL_TYPE (x) = type; | |
3827 | type = build_type_copy (type); | |
3828 | TYPE_STUB_DECL (type) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x)); | |
3829 | TYPE_NAME (type) = x; | |
3830 | TREE_TYPE (x) = type; | |
3831 | } | |
8d08fdba | 3832 | |
8d08fdba MS |
3833 | if (type != error_mark_node |
3834 | && TYPE_NAME (type) | |
3835 | && TYPE_IDENTIFIER (type)) | |
68642fb6 | 3836 | set_identifier_type_value_with_scope (DECL_NAME (x), type, |
f181d4ae MM |
3837 | current_binding_level); |
3838 | ||
8d08fdba MS |
3839 | } |
3840 | ||
3841 | /* Multiple external decls of the same identifier ought to match. | |
3842 | ||
3843 | We get warnings about inline functions where they are defined. | |
39211cd5 | 3844 | We get warnings about other functions from push_overloaded_decl. |
68642fb6 | 3845 | |
8d08fdba | 3846 | Avoid duplicate warnings where they are used. */ |
39211cd5 | 3847 | if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL) |
8d08fdba MS |
3848 | { |
3849 | tree decl; | |
3850 | ||
31928556 JM |
3851 | if (IDENTIFIER_NAMESPACE_VALUE (name) != NULL_TREE |
3852 | && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name)) | |
3853 | || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name)))) | |
3854 | decl = IDENTIFIER_NAMESPACE_VALUE (name); | |
8d08fdba MS |
3855 | else |
3856 | decl = NULL_TREE; | |
3857 | ||
39211cd5 | 3858 | if (decl |
8d08fdba MS |
3859 | /* If different sort of thing, we already gave an error. */ |
3860 | && TREE_CODE (decl) == TREE_CODE (x) | |
3bfdc719 | 3861 | && !same_type_p (TREE_TYPE (x), TREE_TYPE (decl))) |
8d08fdba | 3862 | { |
8251199e JM |
3863 | cp_pedwarn ("type mismatch with previous external decl", x); |
3864 | cp_pedwarn_at ("previous external decl of `%#D'", decl); | |
8d08fdba MS |
3865 | } |
3866 | } | |
3867 | ||
8d08fdba MS |
3868 | /* This name is new in its binding level. |
3869 | Install the new declaration and return it. */ | |
2c73f9f5 | 3870 | if (namespace_bindings_p ()) |
8d08fdba MS |
3871 | { |
3872 | /* Install a global value. */ | |
3873 | ||
8d08fdba MS |
3874 | /* If the first global decl has external linkage, |
3875 | warn if we later see static one. */ | |
31928556 | 3876 | if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && TREE_PUBLIC (x)) |
8d08fdba MS |
3877 | TREE_PUBLIC (name) = 1; |
3878 | ||
d8f8dca1 | 3879 | if (!(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x) |
5fdaba89 MM |
3880 | && t != NULL_TREE) |
3881 | /* For an ordinary function, we create a binding from | |
3882 | the mangled name (i.e., NAME) to the DECL. But, for | |
3883 | an `extern "C"' function, the mangled name and the | |
3884 | ordinary name are the same so we need not do this. */ | |
68642fb6 | 3885 | && !(TREE_CODE (x) == FUNCTION_DECL && |
5fdaba89 | 3886 | DECL_LANGUAGE (x) == lang_c)) |
30394414 JM |
3887 | { |
3888 | if (TREE_CODE (x) == FUNCTION_DECL) | |
68642fb6 | 3889 | my_friendly_assert |
31928556 JM |
3890 | ((IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE) |
3891 | || (IDENTIFIER_GLOBAL_VALUE (name) == x), 378); | |
3892 | SET_IDENTIFIER_NAMESPACE_VALUE (name, x); | |
30394414 | 3893 | } |
8d08fdba MS |
3894 | |
3895 | /* Don't forget if the function was used via an implicit decl. */ | |
3896 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
3897 | && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name))) | |
3898 | TREE_USED (x) = 1; | |
3899 | ||
3900 | /* Don't forget if its address was taken in that way. */ | |
3901 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
3902 | && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name))) | |
3903 | TREE_ADDRESSABLE (x) = 1; | |
3904 | ||
3905 | /* Warn about mismatches against previous implicit decl. */ | |
3906 | if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE | |
3907 | /* If this real decl matches the implicit, don't complain. */ | |
3908 | && ! (TREE_CODE (x) == FUNCTION_DECL | |
3909 | && TREE_TYPE (TREE_TYPE (x)) == integer_type_node)) | |
8251199e JM |
3910 | cp_warning |
3911 | ("`%D' was previously implicitly declared to return `int'", x); | |
8d08fdba MS |
3912 | |
3913 | /* If new decl is `static' and an `extern' was seen previously, | |
3914 | warn about it. */ | |
a0a33927 MS |
3915 | if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t)) |
3916 | warn_extern_redeclared_static (x, t); | |
8d08fdba MS |
3917 | } |
3918 | else | |
3919 | { | |
3920 | /* Here to install a non-global value. */ | |
f181d4ae | 3921 | tree oldlocal = IDENTIFIER_VALUE (name); |
31928556 | 3922 | tree oldglobal = IDENTIFIER_NAMESPACE_VALUE (name); |
8d08fdba | 3923 | |
f181d4ae MM |
3924 | if (need_new_binding) |
3925 | { | |
0034cf72 | 3926 | push_local_binding (name, x, 0); |
f181d4ae MM |
3927 | /* Because push_local_binding will hook X on to the |
3928 | current_binding_level's name list, we don't want to | |
3929 | do that again below. */ | |
3930 | need_new_binding = 0; | |
3931 | } | |
8d08fdba MS |
3932 | |
3933 | /* If this is a TYPE_DECL, push it into the type value slot. */ | |
3934 | if (TREE_CODE (x) == TYPE_DECL) | |
68642fb6 | 3935 | set_identifier_type_value_with_scope (name, TREE_TYPE (x), |
f181d4ae | 3936 | current_binding_level); |
8d08fdba | 3937 | |
a9aedbc2 MS |
3938 | /* Clear out any TYPE_DECL shadowed by a namespace so that |
3939 | we won't think this is a type. The C struct hack doesn't | |
3940 | go through namespaces. */ | |
3941 | if (TREE_CODE (x) == NAMESPACE_DECL) | |
68642fb6 | 3942 | set_identifier_type_value_with_scope (name, NULL_TREE, |
f181d4ae | 3943 | current_binding_level); |
a9aedbc2 | 3944 | |
e905ac8a MS |
3945 | if (oldlocal) |
3946 | { | |
3947 | tree d = oldlocal; | |
74dc0d8c MS |
3948 | while (oldlocal |
3949 | && TREE_CODE (oldlocal) == VAR_DECL | |
3950 | && DECL_DEAD_FOR_LOCAL (oldlocal)) | |
e905ac8a MS |
3951 | { |
3952 | oldlocal = DECL_SHADOWED_FOR_VAR (oldlocal); | |
3953 | } | |
3954 | if (oldlocal == NULL_TREE) | |
3955 | oldlocal = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (d)); | |
3956 | } | |
3957 | ||
8d08fdba MS |
3958 | /* If this is an extern function declaration, see if we |
3959 | have a global definition or declaration for the function. */ | |
3960 | if (oldlocal == NULL_TREE | |
faae18ab | 3961 | && DECL_EXTERNAL (x) |
31928556 | 3962 | && oldglobal != NULL_TREE |
8d08fdba | 3963 | && TREE_CODE (x) == FUNCTION_DECL |
31928556 | 3964 | && TREE_CODE (oldglobal) == FUNCTION_DECL) |
8d08fdba MS |
3965 | { |
3966 | /* We have one. Their types must agree. */ | |
31928556 | 3967 | if (decls_match (x, oldglobal)) |
6060a796 MS |
3968 | /* OK */; |
3969 | else | |
8d08fdba | 3970 | { |
8251199e JM |
3971 | cp_warning ("extern declaration of `%#D' doesn't match", x); |
3972 | cp_warning_at ("global declaration `%#D'", oldglobal); | |
8d08fdba | 3973 | } |
8d08fdba MS |
3974 | } |
3975 | /* If we have a local external declaration, | |
3976 | and no file-scope declaration has yet been seen, | |
3977 | then if we later have a file-scope decl it must not be static. */ | |
3978 | if (oldlocal == NULL_TREE | |
31928556 | 3979 | && oldglobal == NULL_TREE |
8d08fdba MS |
3980 | && DECL_EXTERNAL (x) |
3981 | && TREE_PUBLIC (x)) | |
f181d4ae | 3982 | TREE_PUBLIC (name) = 1; |
8d08fdba | 3983 | |
8d08fdba | 3984 | /* Warn if shadowing an argument at the top level of the body. */ |
e905ac8a MS |
3985 | if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x) |
3986 | /* Inline decls shadow nothing. */ | |
3987 | && !DECL_FROM_INLINE (x) | |
3988 | && TREE_CODE (oldlocal) == PARM_DECL | |
3989 | /* Don't complain if it's from an enclosing function. */ | |
3990 | && DECL_CONTEXT (oldlocal) == current_function_decl | |
3991 | && TREE_CODE (x) != PARM_DECL) | |
8d08fdba MS |
3992 | { |
3993 | /* Go to where the parms should be and see if we | |
3994 | find them there. */ | |
3995 | struct binding_level *b = current_binding_level->level_chain; | |
3996 | ||
3997 | if (cleanup_label) | |
3998 | b = b->level_chain; | |
3999 | ||
4000 | /* ARM $8.3 */ | |
4001 | if (b->parm_flag == 1) | |
8251199e | 4002 | cp_error ("declaration of `%#D' shadows a parameter", name); |
8d08fdba | 4003 | } |
e905ac8a | 4004 | |
8d08fdba | 4005 | /* Maybe warn if shadowing something else. */ |
e905ac8a MS |
4006 | if (warn_shadow && !DECL_EXTERNAL (x) |
4007 | /* Inline decls shadow nothing. */ | |
4008 | && !DECL_FROM_INLINE (x) | |
4009 | /* No shadow warnings for internally generated vars. */ | |
4010 | && ! DECL_ARTIFICIAL (x) | |
4011 | /* No shadow warnings for vars made for inlining. */ | |
4012 | && ! DECL_FROM_INLINE (x)) | |
8d08fdba | 4013 | { |
8d08fdba | 4014 | if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL) |
b9d12519 KG |
4015 | warning ("declaration of `%s' shadows a parameter", |
4016 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4017 | else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE |
4ac14744 | 4018 | && current_class_ptr |
8d08fdba | 4019 | && !TREE_STATIC (name)) |
b9d12519 KG |
4020 | warning ("declaration of `%s' shadows a member of `this'", |
4021 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4022 | else if (oldlocal != NULL_TREE) |
b9d12519 KG |
4023 | warning ("declaration of `%s' shadows previous local", |
4024 | IDENTIFIER_POINTER (name)); | |
31928556 | 4025 | else if (oldglobal != NULL_TREE) |
30394414 | 4026 | /* XXX shadow warnings in outer-more namespaces */ |
b9d12519 KG |
4027 | warning ("declaration of `%s' shadows global declaration", |
4028 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4029 | } |
e1cd6e56 | 4030 | } |
8d08fdba | 4031 | |
e1cd6e56 | 4032 | if (TREE_CODE (x) == FUNCTION_DECL) |
f30432d7 | 4033 | check_default_args (x); |
8145f082 MS |
4034 | |
4035 | /* Keep count of variables in this level with incomplete type. */ | |
8145f082 | 4036 | if (TREE_CODE (x) == VAR_DECL |
28cbf42c | 4037 | && TREE_TYPE (x) != error_mark_node |
f30432d7 MS |
4038 | && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE |
4039 | && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE)) | |
4040 | /* RTTI TD entries are created while defining the type_info. */ | |
4041 | || (TYPE_LANG_SPECIFIC (TREE_TYPE (x)) | |
4042 | && TYPE_BEING_DEFINED (TREE_TYPE (x))))) | |
70adf8a9 JM |
4043 | { |
4044 | if (namespace_bindings_p ()) | |
4045 | namespace_scope_incomplete | |
4046 | = tree_cons (NULL_TREE, x, namespace_scope_incomplete); | |
4047 | else | |
4048 | current_binding_level->incomplete | |
4049 | = tree_cons (NULL_TREE, x, current_binding_level->incomplete); | |
4050 | } | |
8d08fdba MS |
4051 | } |
4052 | ||
f181d4ae | 4053 | if (need_new_binding) |
68642fb6 | 4054 | add_decl_to_level (x, |
efee38a9 MM |
4055 | DECL_NAMESPACE_SCOPE_P (x) |
4056 | ? NAMESPACE_LEVEL (CP_DECL_CONTEXT (x)) | |
4057 | : current_binding_level); | |
8d08fdba MS |
4058 | |
4059 | return x; | |
4060 | } | |
4061 | ||
5566b478 MS |
4062 | /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the |
4063 | caller to set DECL_CONTEXT properly. */ | |
8d08fdba MS |
4064 | |
4065 | static tree | |
4066 | pushdecl_with_scope (x, level) | |
4067 | tree x; | |
4068 | struct binding_level *level; | |
4069 | { | |
8d019cef | 4070 | register struct binding_level *b; |
5566b478 | 4071 | tree function_decl = current_function_decl; |
8d08fdba | 4072 | |
5566b478 | 4073 | current_function_decl = NULL_TREE; |
8d019cef JM |
4074 | if (level->parm_flag == 2) |
4075 | { | |
4076 | b = class_binding_level; | |
4077 | class_binding_level = level; | |
4078 | pushdecl_class_level (x); | |
4079 | class_binding_level = b; | |
4080 | } | |
4081 | else | |
4082 | { | |
4083 | b = current_binding_level; | |
4084 | current_binding_level = level; | |
4085 | x = pushdecl (x); | |
4086 | current_binding_level = b; | |
4087 | } | |
5566b478 | 4088 | current_function_decl = function_decl; |
8d08fdba MS |
4089 | return x; |
4090 | } | |
4091 | ||
2c73f9f5 | 4092 | /* Like pushdecl, only it places X in the current namespace, |
8d08fdba | 4093 | if appropriate. */ |
e92cc029 | 4094 | |
8d08fdba | 4095 | tree |
2c73f9f5 | 4096 | pushdecl_namespace_level (x) |
8d08fdba MS |
4097 | tree x; |
4098 | { | |
8f032717 | 4099 | register struct binding_level *b = current_binding_level; |
2c73f9f5 ML |
4100 | register tree t; |
4101 | ||
4102 | t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace)); | |
8d08fdba MS |
4103 | |
4104 | /* Now, the type_shadowed stack may screw us. Munge it so it does | |
4105 | what we want. */ | |
4106 | if (TREE_CODE (x) == TYPE_DECL) | |
4107 | { | |
4108 | tree name = DECL_NAME (x); | |
4109 | tree newval; | |
4110 | tree *ptr = (tree *)0; | |
4111 | for (; b != global_binding_level; b = b->level_chain) | |
4112 | { | |
4113 | tree shadowed = b->type_shadowed; | |
4114 | for (; shadowed; shadowed = TREE_CHAIN (shadowed)) | |
4115 | if (TREE_PURPOSE (shadowed) == name) | |
4116 | { | |
4117 | ptr = &TREE_VALUE (shadowed); | |
4118 | /* Can't break out of the loop here because sometimes | |
4119 | a binding level will have duplicate bindings for | |
4120 | PT names. It's gross, but I haven't time to fix it. */ | |
4121 | } | |
4122 | } | |
4123 | newval = TREE_TYPE (x); | |
4124 | if (ptr == (tree *)0) | |
4125 | { | |
4126 | /* @@ This shouldn't be needed. My test case "zstring.cc" trips | |
4127 | up here if this is changed to an assertion. --KR */ | |
4128 | SET_IDENTIFIER_TYPE_VALUE (name, newval); | |
4129 | } | |
4130 | else | |
4131 | { | |
8d08fdba MS |
4132 | *ptr = newval; |
4133 | } | |
4134 | } | |
4135 | return t; | |
4136 | } | |
4137 | ||
2c73f9f5 ML |
4138 | /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, |
4139 | if appropriate. */ | |
4140 | ||
4141 | tree | |
4142 | pushdecl_top_level (x) | |
4143 | tree x; | |
4144 | { | |
b35d4555 | 4145 | push_to_top_level (); |
2c73f9f5 | 4146 | x = pushdecl_namespace_level (x); |
b35d4555 | 4147 | pop_from_top_level (); |
2c73f9f5 ML |
4148 | return x; |
4149 | } | |
4150 | ||
8d08fdba | 4151 | /* Make the declaration of X appear in CLASS scope. */ |
e92cc029 | 4152 | |
61a127b3 | 4153 | void |
8d08fdba MS |
4154 | pushdecl_class_level (x) |
4155 | tree x; | |
4156 | { | |
4157 | /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class | |
4158 | scope looks for the pre-mangled name. */ | |
8f032717 MM |
4159 | register tree name; |
4160 | ||
4161 | if (TREE_CODE (x) == OVERLOAD) | |
4162 | x = OVL_CURRENT (x); | |
4163 | name = DECL_NAME (x); | |
8d08fdba MS |
4164 | |
4165 | if (name) | |
4166 | { | |
4167 | push_class_level_binding (name, x); | |
4168 | if (TREE_CODE (x) == TYPE_DECL) | |
f181d4ae | 4169 | set_identifier_type_value (name, TREE_TYPE (x)); |
8d08fdba | 4170 | } |
6bdb8141 | 4171 | else if (ANON_AGGR_TYPE_P (TREE_TYPE (x))) |
8f032717 MM |
4172 | { |
4173 | tree f; | |
4174 | ||
4175 | for (f = TYPE_FIELDS (TREE_TYPE (x)); | |
4176 | f; | |
4177 | f = TREE_CHAIN (f)) | |
4178 | pushdecl_class_level (f); | |
4179 | } | |
8d08fdba MS |
4180 | } |
4181 | ||
9188c363 MM |
4182 | /* Enter DECL into the symbol table, if that's appropriate. Returns |
4183 | DECL, or a modified version thereof. */ | |
4184 | ||
4185 | tree | |
4186 | maybe_push_decl (decl) | |
4187 | tree decl; | |
4188 | { | |
4189 | tree type = TREE_TYPE (decl); | |
4190 | ||
4191 | /* Add this decl to the current binding level, but not if it comes | |
4192 | from another scope, e.g. a static member variable. TEM may equal | |
4193 | DECL or it may be a previous decl of the same name. */ | |
07c88314 MM |
4194 | if (decl == error_mark_node |
4195 | || (TREE_CODE (decl) != PARM_DECL | |
4196 | && DECL_CONTEXT (decl) != NULL_TREE | |
4197 | /* Definitions of namespace members outside their namespace are | |
4198 | possible. */ | |
4199 | && TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL) | |
9188c363 MM |
4200 | || (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ()) |
4201 | || TREE_CODE (type) == UNKNOWN_TYPE | |
558475f0 | 4202 | /* The declaration of a template specialization does not affect |
9188c363 MM |
4203 | the functions available for overload resolution, so we do not |
4204 | call pushdecl. */ | |
4205 | || (TREE_CODE (decl) == FUNCTION_DECL | |
4206 | && DECL_TEMPLATE_SPECIALIZATION (decl))) | |
4207 | return decl; | |
4208 | else | |
4209 | return pushdecl (decl); | |
4210 | } | |
4211 | ||
bd6dd845 | 4212 | #if 0 |
7177d104 MS |
4213 | /* This function is used to push the mangled decls for nested types into |
4214 | the appropriate scope. Previously pushdecl_top_level was used, but that | |
4215 | is incorrect for members of local classes. */ | |
e92cc029 | 4216 | |
5566b478 | 4217 | void |
7177d104 MS |
4218 | pushdecl_nonclass_level (x) |
4219 | tree x; | |
4220 | { | |
4221 | struct binding_level *b = current_binding_level; | |
4222 | ||
7177d104 | 4223 | my_friendly_assert (b->parm_flag != 2, 180); |
7177d104 | 4224 | |
5566b478 | 4225 | #if 0 |
7177d104 MS |
4226 | /* Get out of template binding levels */ |
4227 | while (b->pseudo_global) | |
4228 | b = b->level_chain; | |
5566b478 | 4229 | #endif |
7177d104 MS |
4230 | |
4231 | pushdecl_with_scope (x, b); | |
4232 | } | |
bd6dd845 | 4233 | #endif |
7177d104 | 4234 | |
8d08fdba MS |
4235 | /* Make the declaration(s) of X appear in CLASS scope |
4236 | under the name NAME. */ | |
e92cc029 | 4237 | |
8d08fdba MS |
4238 | void |
4239 | push_class_level_binding (name, x) | |
4240 | tree name; | |
4241 | tree x; | |
4242 | { | |
8f032717 | 4243 | tree binding; |
68642fb6 | 4244 | /* The class_binding_level will be NULL if x is a template |
98c1c668 JM |
4245 | parameter name in a member template. */ |
4246 | if (!class_binding_level) | |
4247 | return; | |
4248 | ||
908c4e83 MM |
4249 | /* Make sure that this new member does not have the same name |
4250 | as a template parameter. */ | |
4251 | if (TYPE_BEING_DEFINED (current_class_type)) | |
4252 | check_template_shadow (x); | |
4253 | ||
f181d4ae MM |
4254 | /* If this declaration shadows a declaration from an enclosing |
4255 | class, then we will need to restore IDENTIFIER_CLASS_VALUE when | |
4256 | we leave this class. Record the shadowed declaration here. */ | |
8f032717 | 4257 | binding = IDENTIFIER_BINDING (name); |
68642fb6 | 4258 | if (binding |
8f032717 MM |
4259 | && ((TREE_CODE (x) == OVERLOAD |
4260 | && BINDING_VALUE (binding) | |
4261 | && is_overloaded_fn (BINDING_VALUE (binding))) | |
4262 | || INHERITED_VALUE_BINDING_P (binding))) | |
4263 | { | |
4264 | tree shadow; | |
4265 | tree old_decl; | |
4266 | ||
4267 | /* If the old binding was from a base class, and was for a tag | |
4268 | name, slide it over to make room for the new binding. The | |
4269 | old binding is still visible if explicitly qualified with a | |
4270 | class-key. */ | |
4271 | if (INHERITED_VALUE_BINDING_P (binding) | |
4272 | && BINDING_VALUE (binding) | |
4273 | && TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL | |
4274 | && DECL_ARTIFICIAL (BINDING_VALUE (binding)) | |
4275 | && !(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x))) | |
4276 | { | |
4277 | old_decl = BINDING_TYPE (binding); | |
4278 | BINDING_TYPE (binding) = BINDING_VALUE (binding); | |
4279 | BINDING_VALUE (binding) = NULL_TREE; | |
4280 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
4281 | } | |
4282 | else | |
4283 | old_decl = BINDING_VALUE (binding); | |
4284 | ||
4285 | /* There was already a binding for X containing fewer | |
4286 | functions than are named in X. Find the previous | |
4287 | declaration of X on the class-shadowed list, and update it. */ | |
4288 | for (shadow = class_binding_level->class_shadowed; | |
4289 | shadow; | |
4290 | shadow = TREE_CHAIN (shadow)) | |
4291 | if (TREE_PURPOSE (shadow) == name | |
4292 | && TREE_TYPE (shadow) == old_decl) | |
4293 | { | |
4294 | BINDING_VALUE (binding) = x; | |
4295 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
4296 | TREE_TYPE (shadow) = x; | |
4297 | return; | |
4298 | } | |
4299 | } | |
f181d4ae | 4300 | |
8f032717 MM |
4301 | /* If we didn't replace an existing binding, put the binding on the |
4302 | stack of bindings for the identifier, and update | |
4303 | IDENTIFIER_CLASS_VALUE. */ | |
4304 | if (push_class_binding (name, x)) | |
4305 | { | |
8f032717 MM |
4306 | class_binding_level->class_shadowed |
4307 | = tree_cons (name, IDENTIFIER_CLASS_VALUE (name), | |
4308 | class_binding_level->class_shadowed); | |
8f032717 MM |
4309 | /* Record the value we are binding NAME to so that we can know |
4310 | what to pop later. */ | |
4311 | TREE_TYPE (class_binding_level->class_shadowed) = x; | |
4312 | } | |
8d08fdba MS |
4313 | } |
4314 | ||
2c73f9f5 ML |
4315 | /* Insert another USING_DECL into the current binding level, |
4316 | returning this declaration. If this is a redeclaration, | |
4317 | do nothing and return NULL_TREE. */ | |
e92cc029 | 4318 | |
2c73f9f5 ML |
4319 | tree |
4320 | push_using_decl (scope, name) | |
4321 | tree scope; | |
4322 | tree name; | |
8d08fdba | 4323 | { |
2c73f9f5 | 4324 | tree decl; |
68642fb6 | 4325 | |
2c73f9f5 ML |
4326 | my_friendly_assert (TREE_CODE (scope) == NAMESPACE_DECL, 383); |
4327 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 384); | |
4328 | for (decl = current_binding_level->usings; decl; decl = TREE_CHAIN (decl)) | |
4329 | if (DECL_INITIAL (decl) == scope && DECL_NAME (decl) == name) | |
4330 | break; | |
4331 | if (decl) | |
4332 | return NULL_TREE; | |
4ce3d537 | 4333 | decl = build_lang_decl (USING_DECL, name, void_type_node); |
2c73f9f5 ML |
4334 | DECL_INITIAL (decl) = scope; |
4335 | TREE_CHAIN (decl) = current_binding_level->usings; | |
4336 | current_binding_level->usings = decl; | |
4337 | return decl; | |
8d08fdba MS |
4338 | } |
4339 | ||
ea9635c7 ML |
4340 | /* Add namespace to using_directives. Return NULL_TREE if nothing was |
4341 | changed (i.e. there was already a directive), or the fresh | |
4342 | TREE_LIST otherwise. */ | |
4343 | ||
4344 | tree | |
9ed182dc | 4345 | push_using_directive (used) |
ea9635c7 | 4346 | tree used; |
ea9635c7 ML |
4347 | { |
4348 | tree ud = current_binding_level->using_directives; | |
9ed182dc | 4349 | tree iter, ancestor; |
68642fb6 | 4350 | |
ea9635c7 ML |
4351 | /* Check if we already have this. */ |
4352 | if (purpose_member (used, ud) != NULL_TREE) | |
4353 | return NULL_TREE; | |
00dc6358 JM |
4354 | |
4355 | /* Recursively add all namespaces used. */ | |
4356 | for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter)) | |
9ed182dc | 4357 | push_using_directive (TREE_PURPOSE (iter)); |
00dc6358 | 4358 | |
9ed182dc | 4359 | ancestor = namespace_ancestor (current_decl_namespace (), used); |
00dc6358 | 4360 | ud = current_binding_level->using_directives; |
e1b3e07d | 4361 | ud = tree_cons (used, ancestor, ud); |
ea9635c7 ML |
4362 | current_binding_level->using_directives = ud; |
4363 | return ud; | |
4364 | } | |
4365 | ||
f181d4ae MM |
4366 | /* DECL is a FUNCTION_DECL for a non-member function, which may have |
4367 | other definitions already in place. We get around this by making | |
4368 | the value of the identifier point to a list of all the things that | |
4369 | want to be referenced by that name. It is then up to the users of | |
4370 | that name to decide what to do with that list. | |
8d08fdba MS |
4371 | |
4372 | DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT | |
4373 | slot. It is dealt with the same way. | |
4374 | ||
7bdbfa05 MM |
4375 | FLAGS is a bitwise-or of the following values: |
4376 | PUSH_LOCAL: Bind DECL in the current scope, rather than at | |
4377 | namespace scope. | |
4378 | PUSH_USING: DECL is being pushed as the result of a using | |
68642fb6 | 4379 | declaration. |
7bdbfa05 | 4380 | |
8d08fdba MS |
4381 | The value returned may be a previous declaration if we guessed wrong |
4382 | about what language DECL should belong to (C or C++). Otherwise, | |
4383 | it's always DECL (and never something that's not a _DECL). */ | |
e92cc029 | 4384 | |
7bdbfa05 MM |
4385 | tree |
4386 | push_overloaded_decl (decl, flags) | |
8d08fdba | 4387 | tree decl; |
7bdbfa05 | 4388 | int flags; |
8d08fdba | 4389 | { |
f181d4ae | 4390 | tree name = DECL_NAME (decl); |
700f8a87 | 4391 | tree old; |
f181d4ae | 4392 | tree new_binding; |
7bdbfa05 | 4393 | int doing_global = (namespace_bindings_p () || !(flags & PUSH_LOCAL)); |
700f8a87 MS |
4394 | |
4395 | if (doing_global) | |
9f33663b | 4396 | old = namespace_binding (name, DECL_CONTEXT (decl)); |
700f8a87 | 4397 | else |
f181d4ae | 4398 | old = lookup_name_current_level (name); |
8d08fdba | 4399 | |
700f8a87 | 4400 | if (old) |
8d08fdba | 4401 | { |
e1cd6e56 | 4402 | if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old)) |
8926095f | 4403 | { |
700f8a87 | 4404 | tree t = TREE_TYPE (old); |
cdf5b885 MS |
4405 | if (IS_AGGR_TYPE (t) && warn_shadow |
4406 | && (! DECL_IN_SYSTEM_HEADER (decl) | |
4407 | || ! DECL_IN_SYSTEM_HEADER (old))) | |
8251199e | 4408 | cp_warning ("`%#D' hides constructor for `%#T'", decl, t); |
5b605f68 | 4409 | old = NULL_TREE; |
8926095f | 4410 | } |
700f8a87 | 4411 | else if (is_overloaded_fn (old)) |
8d08fdba | 4412 | { |
8d08fdba | 4413 | tree tmp; |
68642fb6 | 4414 | |
2c73f9f5 | 4415 | for (tmp = old; tmp; tmp = OVL_NEXT (tmp)) |
7bdbfa05 MM |
4416 | { |
4417 | tree fn = OVL_CURRENT (tmp); | |
4418 | ||
4419 | if (TREE_CODE (tmp) == OVERLOAD && OVL_USED (tmp) | |
4420 | && !(flags & PUSH_USING) | |
4421 | && compparms (TYPE_ARG_TYPES (TREE_TYPE (fn)), | |
4422 | TYPE_ARG_TYPES (TREE_TYPE (decl)))) | |
4423 | cp_error ("`%#D' conflicts with previous using declaration `%#D'", | |
4424 | decl, fn); | |
68642fb6 | 4425 | |
7bdbfa05 MM |
4426 | if (duplicate_decls (decl, fn)) |
4427 | return fn; | |
4428 | } | |
8d08fdba | 4429 | } |
e1cd6e56 MS |
4430 | else |
4431 | { | |
8251199e JM |
4432 | cp_error_at ("previous non-function declaration `%#D'", old); |
4433 | cp_error ("conflicts with function declaration `%#D'", decl); | |
a9aedbc2 | 4434 | return decl; |
e1cd6e56 | 4435 | } |
8d08fdba | 4436 | } |
7177d104 | 4437 | |
700f8a87 | 4438 | if (old || TREE_CODE (decl) == TEMPLATE_DECL) |
8d08fdba | 4439 | { |
2c73f9f5 | 4440 | if (old && TREE_CODE (old) != OVERLOAD) |
f181d4ae MM |
4441 | new_binding = ovl_cons (decl, ovl_cons (old, NULL_TREE)); |
4442 | else | |
4443 | new_binding = ovl_cons (decl, old); | |
347d73d7 ML |
4444 | if (flags & PUSH_USING) |
4445 | OVL_USED (new_binding) = 1; | |
8d08fdba MS |
4446 | } |
4447 | else | |
f181d4ae MM |
4448 | /* NAME is not ambiguous. */ |
4449 | new_binding = decl; | |
700f8a87 MS |
4450 | |
4451 | if (doing_global) | |
f181d4ae | 4452 | set_namespace_binding (name, current_namespace, new_binding); |
700f8a87 | 4453 | else |
f181d4ae MM |
4454 | { |
4455 | /* We only create an OVERLOAD if there was a previous binding at | |
0580c9aa ML |
4456 | this level, or if decl is a template. In the former case, we |
4457 | need to remove the old binding and replace it with the new | |
4458 | binding. We must also run through the NAMES on the binding | |
4459 | level where the name was bound to update the chain. */ | |
4460 | ||
4461 | if (TREE_CODE (new_binding) == OVERLOAD && old) | |
f181d4ae MM |
4462 | { |
4463 | tree *d; | |
68642fb6 | 4464 | |
f181d4ae MM |
4465 | for (d = &BINDING_LEVEL (IDENTIFIER_BINDING (name))->names; |
4466 | *d; | |
4467 | d = &TREE_CHAIN (*d)) | |
4468 | if (*d == old | |
4469 | || (TREE_CODE (*d) == TREE_LIST | |
4470 | && TREE_VALUE (*d) == old)) | |
4471 | { | |
d8f8dca1 MM |
4472 | if (TREE_CODE (*d) == TREE_LIST) |
4473 | /* Just replace the old binding with the new. */ | |
4474 | TREE_VALUE (*d) = new_binding; | |
4475 | else | |
4476 | /* Build a TREE_LIST to wrap the OVERLOAD. */ | |
68642fb6 | 4477 | *d = tree_cons (NULL_TREE, new_binding, |
ed5511d9 | 4478 | TREE_CHAIN (*d)); |
d8f8dca1 MM |
4479 | |
4480 | /* And update the CPLUS_BINDING node. */ | |
4481 | BINDING_VALUE (IDENTIFIER_BINDING (name)) | |
4482 | = new_binding; | |
4483 | return decl; | |
f181d4ae MM |
4484 | } |
4485 | ||
d8f8dca1 MM |
4486 | /* We should always find a previous binding in this case. */ |
4487 | my_friendly_abort (0); | |
f181d4ae MM |
4488 | } |
4489 | ||
4490 | /* Install the new binding. */ | |
0034cf72 | 4491 | push_local_binding (name, new_binding, flags); |
f181d4ae | 4492 | } |
700f8a87 | 4493 | |
8d08fdba MS |
4494 | return decl; |
4495 | } | |
4496 | \f | |
4497 | /* Generate an implicit declaration for identifier FUNCTIONID | |
4498 | as a function of type int (). Print a warning if appropriate. */ | |
4499 | ||
4500 | tree | |
4501 | implicitly_declare (functionid) | |
4502 | tree functionid; | |
4503 | { | |
4504 | register tree decl; | |
8d08fdba MS |
4505 | |
4506 | /* We used to reuse an old implicit decl here, | |
4507 | but this loses with inline functions because it can clobber | |
4508 | the saved decl chains. */ | |
4509 | decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type); | |
4510 | ||
4511 | DECL_EXTERNAL (decl) = 1; | |
4512 | TREE_PUBLIC (decl) = 1; | |
4513 | ||
4514 | /* ANSI standard says implicit declarations are in the innermost block. | |
d22c8596 | 4515 | So we record the decl in the standard fashion. */ |
8d08fdba MS |
4516 | pushdecl (decl); |
4517 | rest_of_decl_compilation (decl, NULL_PTR, 0, 0); | |
4518 | ||
4519 | if (warn_implicit | |
4520 | /* Only one warning per identifier. */ | |
4521 | && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE) | |
4522 | { | |
8251199e | 4523 | cp_pedwarn ("implicit declaration of function `%#D'", decl); |
8d08fdba MS |
4524 | } |
4525 | ||
4526 | SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl); | |
4527 | ||
8d08fdba MS |
4528 | return decl; |
4529 | } | |
4530 | ||
8251199e | 4531 | /* Return zero if the declaration NEWDECL is valid |
8d08fdba MS |
4532 | when the declaration OLDDECL (assumed to be for the same name) |
4533 | has already been seen. | |
4534 | Otherwise return an error message format string with a %s | |
4535 | where the identifier should go. */ | |
4536 | ||
d8e178a0 | 4537 | static const char * |
8d08fdba MS |
4538 | redeclaration_error_message (newdecl, olddecl) |
4539 | tree newdecl, olddecl; | |
4540 | { | |
4541 | if (TREE_CODE (newdecl) == TYPE_DECL) | |
4542 | { | |
4543 | /* Because C++ can put things into name space for free, | |
4544 | constructs like "typedef struct foo { ... } foo" | |
4545 | would look like an erroneous redeclaration. */ | |
3bfdc719 | 4546 | if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl))) |
8251199e | 4547 | return 0; |
8d08fdba | 4548 | else |
8251199e | 4549 | return "redefinition of `%#D'"; |
8d08fdba MS |
4550 | } |
4551 | else if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
4552 | { | |
4553 | /* If this is a pure function, its olddecl will actually be | |
4554 | the original initialization to `0' (which we force to call | |
4555 | abort()). Don't complain about redefinition in this case. */ | |
fee7654e | 4556 | if (DECL_LANG_SPECIFIC (olddecl) && DECL_PURE_VIRTUAL_P (olddecl)) |
8251199e | 4557 | return 0; |
8d08fdba | 4558 | |
2c73f9f5 ML |
4559 | /* If both functions come from different namespaces, this is not |
4560 | a redeclaration - this is a conflict with a used function. */ | |
6eb3bb27 | 4561 | if (DECL_NAMESPACE_SCOPE_P (olddecl) |
2c73f9f5 | 4562 | && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl)) |
8251199e | 4563 | return "`%D' conflicts with used function"; |
2c73f9f5 | 4564 | |
db5ae43f MS |
4565 | /* We'll complain about linkage mismatches in |
4566 | warn_extern_redeclared_static. */ | |
4567 | ||
2c73f9f5 | 4568 | /* Defining the same name twice is no good. */ |
8d08fdba | 4569 | if (DECL_INITIAL (olddecl) != NULL_TREE |
faae18ab | 4570 | && DECL_INITIAL (newdecl) != NULL_TREE) |
8d08fdba MS |
4571 | { |
4572 | if (DECL_NAME (olddecl) == NULL_TREE) | |
8251199e | 4573 | return "`%#D' not declared in class"; |
8d08fdba | 4574 | else |
8251199e | 4575 | return "redefinition of `%#D'"; |
8d08fdba | 4576 | } |
8251199e | 4577 | return 0; |
8d08fdba | 4578 | } |
51c184be MS |
4579 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
4580 | { | |
ec255269 MS |
4581 | if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL |
4582 | && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl)) | |
4583 | && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl))) | |
4584 | || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL | |
4585 | && TYPE_SIZE (TREE_TYPE (newdecl)) | |
4586 | && TYPE_SIZE (TREE_TYPE (olddecl)))) | |
8251199e JM |
4587 | return "redefinition of `%#D'"; |
4588 | return 0; | |
51c184be | 4589 | } |
5566b478 | 4590 | else if (toplevel_bindings_p ()) |
8d08fdba MS |
4591 | { |
4592 | /* Objects declared at top level: */ | |
4593 | /* If at least one is a reference, it's ok. */ | |
4594 | if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl)) | |
8251199e | 4595 | return 0; |
8926095f | 4596 | /* Reject two definitions. */ |
8251199e | 4597 | return "redefinition of `%#D'"; |
8d08fdba MS |
4598 | } |
4599 | else | |
4600 | { | |
4601 | /* Objects declared with block scope: */ | |
4602 | /* Reject two definitions, and reject a definition | |
4603 | together with an external reference. */ | |
4604 | if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl))) | |
8251199e JM |
4605 | return "redeclaration of `%#D'"; |
4606 | return 0; | |
8d08fdba MS |
4607 | } |
4608 | } | |
4609 | \f | |
acef433b | 4610 | /* Create a new label, named ID. */ |
8d08fdba | 4611 | |
acef433b MM |
4612 | static tree |
4613 | make_label_decl (id, local_p) | |
8d08fdba | 4614 | tree id; |
acef433b | 4615 | int local_p; |
8d08fdba | 4616 | { |
acef433b | 4617 | tree decl; |
8d08fdba | 4618 | |
acef433b | 4619 | decl = build_decl (LABEL_DECL, id, void_type_node); |
b35d4555 | 4620 | if (expanding_p) |
acef433b MM |
4621 | /* Make sure every label has an rtx. */ |
4622 | label_rtx (decl); | |
4623 | ||
4624 | DECL_CONTEXT (decl) = current_function_decl; | |
4625 | DECL_MODE (decl) = VOIDmode; | |
4626 | C_DECLARED_LABEL_FLAG (decl) = local_p; | |
8d08fdba | 4627 | |
acef433b MM |
4628 | /* Say where one reference is to the label, for the sake of the |
4629 | error if it is not defined. */ | |
4630 | DECL_SOURCE_LINE (decl) = lineno; | |
4631 | DECL_SOURCE_FILE (decl) = input_filename; | |
4632 | ||
4633 | /* Record the fact that this identifier is bound to this label. */ | |
4634 | SET_IDENTIFIER_LABEL_VALUE (id, decl); | |
4635 | ||
4636 | /* Record this label on the list of used labels so that we can check | |
4637 | at the end of the function to see whether or not the label was | |
4638 | actually defined. */ | |
4639 | if ((named_label_uses == NULL || named_label_uses->label_decl != decl) | |
e349ee73 MS |
4640 | && (named_label_uses == NULL |
4641 | || named_label_uses->names_in_scope != current_binding_level->names | |
4642 | || named_label_uses->label_decl != decl)) | |
4643 | { | |
4644 | struct named_label_list *new_ent; | |
4645 | new_ent | |
4646 | = (struct named_label_list*)oballoc (sizeof (struct named_label_list)); | |
4647 | new_ent->label_decl = decl; | |
4648 | new_ent->names_in_scope = current_binding_level->names; | |
4649 | new_ent->binding_level = current_binding_level; | |
4650 | new_ent->lineno_o_goto = lineno; | |
4651 | new_ent->filename_o_goto = input_filename; | |
4652 | new_ent->next = named_label_uses; | |
4653 | named_label_uses = new_ent; | |
8d08fdba MS |
4654 | } |
4655 | ||
acef433b MM |
4656 | return decl; |
4657 | } | |
8d08fdba | 4658 | |
acef433b MM |
4659 | /* Look for a label named ID in the current function. If one cannot |
4660 | be found, create one. (We keep track of used, but undefined, | |
4661 | labels, and complain about them at the end of a function.) */ | |
8d08fdba | 4662 | |
68642fb6 | 4663 | tree |
acef433b MM |
4664 | lookup_label (id) |
4665 | tree id; | |
4666 | { | |
4667 | tree decl; | |
8d08fdba | 4668 | |
acef433b MM |
4669 | /* You can't use labels at global scope. */ |
4670 | if (current_function_decl == NULL_TREE) | |
4671 | { | |
4672 | error ("label `%s' referenced outside of any function", | |
4673 | IDENTIFIER_POINTER (id)); | |
4674 | return NULL_TREE; | |
4675 | } | |
68642fb6 | 4676 | |
acef433b MM |
4677 | /* See if we've already got this label. */ |
4678 | decl = IDENTIFIER_LABEL_VALUE (id); | |
4679 | if (decl != NULL_TREE && DECL_CONTEXT (decl) == current_function_decl) | |
4680 | return decl; | |
8d08fdba | 4681 | |
acef433b MM |
4682 | /* Record this label on the list of labels used in this function. |
4683 | We do this before calling make_label_decl so that we get the | |
4684 | IDENTIFIER_LABEL_VALUE before the new label is declared. */ | |
4685 | named_labels = tree_cons (IDENTIFIER_LABEL_VALUE (id), NULL_TREE, | |
4686 | named_labels); | |
4687 | /* We need a new label. */ | |
4688 | decl = make_label_decl (id, /*local_p=*/0); | |
4689 | /* Now fill in the information we didn't have before. */ | |
4690 | TREE_VALUE (named_labels) = decl; | |
8d08fdba MS |
4691 | |
4692 | return decl; | |
4693 | } | |
4694 | ||
acef433b | 4695 | /* Declare a local label named ID. */ |
8d08fdba MS |
4696 | |
4697 | tree | |
acef433b MM |
4698 | declare_local_label (id) |
4699 | tree id; | |
8d08fdba | 4700 | { |
acef433b | 4701 | tree decl; |
8d08fdba | 4702 | |
acef433b MM |
4703 | /* Add a new entry to the SHADOWED_LABELS list so that when we leave |
4704 | this scope we can restore the old value of | |
4705 | IDENTIFIER_TYPE_VALUE. */ | |
68642fb6 | 4706 | current_binding_level->shadowed_labels |
acef433b MM |
4707 | = tree_cons (IDENTIFIER_LABEL_VALUE (id), NULL_TREE, |
4708 | current_binding_level->shadowed_labels); | |
4709 | /* Look for the label. */ | |
4710 | decl = make_label_decl (id, /*local_p=*/1); | |
4711 | /* Now fill in the information we didn't have before. */ | |
4712 | TREE_VALUE (current_binding_level->shadowed_labels) = decl; | |
68642fb6 | 4713 | |
acef433b | 4714 | return decl; |
8d08fdba MS |
4715 | } |
4716 | ||
4717 | /* Define a label, specifying the location in the source file. | |
4718 | Return the LABEL_DECL node for the label, if the definition is valid. | |
4719 | Otherwise return 0. */ | |
4720 | ||
4721 | tree | |
4722 | define_label (filename, line, name) | |
4723 | char *filename; | |
4724 | int line; | |
4725 | tree name; | |
4726 | { | |
f01b0acb | 4727 | tree decl = lookup_label (name); |
8d08fdba MS |
4728 | |
4729 | /* After labels, make any new cleanups go into their | |
4730 | own new (temporary) binding contour. */ | |
4731 | current_binding_level->more_cleanups_ok = 0; | |
4732 | ||
e1cd6e56 | 4733 | if (name == get_identifier ("wchar_t")) |
8251199e | 4734 | cp_pedwarn ("label named wchar_t"); |
e1cd6e56 | 4735 | |
8d08fdba MS |
4736 | if (DECL_INITIAL (decl) != NULL_TREE) |
4737 | { | |
8251199e | 4738 | cp_error ("duplicate label `%D'", decl); |
8d08fdba MS |
4739 | return 0; |
4740 | } | |
4741 | else | |
4742 | { | |
e349ee73 | 4743 | struct named_label_list *uses, *prev; |
28cbf42c | 4744 | int identified = 0; |
227cf171 | 4745 | int saw_eh = 0; |
8d08fdba MS |
4746 | |
4747 | /* Mark label as having been defined. */ | |
4748 | DECL_INITIAL (decl) = error_mark_node; | |
4749 | /* Say where in the source. */ | |
4750 | DECL_SOURCE_FILE (decl) = filename; | |
4751 | DECL_SOURCE_LINE (decl) = line; | |
4752 | ||
e349ee73 MS |
4753 | prev = NULL; |
4754 | uses = named_label_uses; | |
4755 | while (uses != NULL) | |
4756 | if (uses->label_decl == decl) | |
8d08fdba MS |
4757 | { |
4758 | struct binding_level *b = current_binding_level; | |
4759 | while (b) | |
4760 | { | |
4761 | tree new_decls = b->names; | |
e349ee73 MS |
4762 | tree old_decls = (b == uses->binding_level) |
4763 | ? uses->names_in_scope : NULL_TREE; | |
8d08fdba MS |
4764 | while (new_decls != old_decls) |
4765 | { | |
4766 | if (TREE_CODE (new_decls) == VAR_DECL | |
4767 | /* Don't complain about crossing initialization | |
4768 | of internal entities. They can't be accessed, | |
4769 | and they should be cleaned up | |
4770 | by the time we get to the label. */ | |
700f8a87 | 4771 | && ! DECL_ARTIFICIAL (new_decls) |
5524676d JM |
4772 | && !(DECL_INITIAL (new_decls) == NULL_TREE |
4773 | && pod_type_p (TREE_TYPE (new_decls)))) | |
8d08fdba | 4774 | { |
b607c87f JM |
4775 | /* This is really only important if we're crossing |
4776 | an initialization. The POD stuff is just | |
4777 | pedantry; why should it matter if the class | |
4778 | contains a field of pointer to member type? */ | |
4779 | int problem = (DECL_INITIAL (new_decls) | |
4780 | || (TYPE_NEEDS_CONSTRUCTING | |
4781 | (TREE_TYPE (new_decls)))); | |
4782 | ||
4783 | if (! identified) | |
e349ee73 | 4784 | { |
b607c87f JM |
4785 | if (problem) |
4786 | { | |
4787 | cp_error ("jump to label `%D'", decl); | |
4788 | error_with_file_and_line | |
4789 | (uses->filename_o_goto, | |
4790 | uses->lineno_o_goto, " from here"); | |
4791 | } | |
4792 | else | |
4793 | { | |
4794 | cp_pedwarn ("jump to label `%D'", decl); | |
4795 | pedwarn_with_file_and_line | |
4796 | (uses->filename_o_goto, | |
4797 | uses->lineno_o_goto, " from here"); | |
4798 | } | |
e349ee73 | 4799 | identified = 1; |
227cf171 | 4800 | } |
b607c87f JM |
4801 | |
4802 | if (problem) | |
5524676d JM |
4803 | cp_error_at (" crosses initialization of `%#D'", |
4804 | new_decls); | |
4805 | else | |
b607c87f | 4806 | cp_pedwarn_at (" enters scope of non-POD `%#D'", |
5524676d | 4807 | new_decls); |
8d08fdba MS |
4808 | } |
4809 | new_decls = TREE_CHAIN (new_decls); | |
4810 | } | |
e349ee73 | 4811 | if (b == uses->binding_level) |
8d08fdba | 4812 | break; |
227cf171 JM |
4813 | if (b->eh_region && ! saw_eh) |
4814 | { | |
4815 | if (! identified) | |
4816 | { | |
4817 | cp_error ("jump to label `%D'", decl); | |
4818 | error_with_file_and_line | |
4819 | (uses->filename_o_goto, | |
4820 | uses->lineno_o_goto, " from here"); | |
4821 | identified = 1; | |
4822 | } | |
4823 | error (" enters exception handling block"); | |
4824 | saw_eh = 1; | |
4825 | } | |
8d08fdba MS |
4826 | b = b->level_chain; |
4827 | } | |
4828 | ||
e349ee73 MS |
4829 | if (prev != NULL) |
4830 | prev->next = uses->next; | |
8d08fdba | 4831 | else |
e349ee73 MS |
4832 | named_label_uses = uses->next; |
4833 | ||
4834 | uses = uses->next; | |
4835 | } | |
4836 | else | |
4837 | { | |
4838 | prev = uses; | |
4839 | uses = uses->next; | |
8d08fdba MS |
4840 | } |
4841 | current_function_return_value = NULL_TREE; | |
4842 | return decl; | |
4843 | } | |
4844 | } | |
4845 | ||
a5894242 MS |
4846 | struct cp_switch |
4847 | { | |
4848 | struct binding_level *level; | |
4849 | struct cp_switch *next; | |
4850 | }; | |
4851 | ||
4852 | static struct cp_switch *switch_stack; | |
4853 | ||
4854 | void | |
4855 | push_switch () | |
4856 | { | |
4857 | struct cp_switch *p | |
4858 | = (struct cp_switch *) oballoc (sizeof (struct cp_switch)); | |
4859 | p->level = current_binding_level; | |
4860 | p->next = switch_stack; | |
4861 | switch_stack = p; | |
4862 | } | |
4863 | ||
4864 | void | |
4865 | pop_switch () | |
4866 | { | |
4867 | switch_stack = switch_stack->next; | |
4868 | } | |
4869 | ||
b0a1da19 JM |
4870 | /* Note that we've seen a definition of a case label, and complain if this |
4871 | is a bad place for one. */ | |
e92cc029 | 4872 | |
8d08fdba | 4873 | void |
b370501f | 4874 | define_case_label () |
8d08fdba MS |
4875 | { |
4876 | tree cleanup = last_cleanup_this_contour (); | |
a5894242 MS |
4877 | struct binding_level *b = current_binding_level; |
4878 | int identified = 0; | |
4879 | ||
b0a1da19 JM |
4880 | if (! switch_stack) |
4881 | /* Don't crash; we'll complain in do_case. */ | |
4882 | return; | |
68642fb6 | 4883 | |
8d08fdba MS |
4884 | if (cleanup) |
4885 | { | |
4886 | static int explained = 0; | |
8251199e JM |
4887 | cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup)); |
4888 | warning ("where case label appears here"); | |
8d08fdba MS |
4889 | if (!explained) |
4890 | { | |
8251199e JM |
4891 | warning ("(enclose actions of previous case statements requiring"); |
4892 | warning ("destructors in their own binding contours.)"); | |
8d08fdba MS |
4893 | explained = 1; |
4894 | } | |
4895 | } | |
4896 | ||
a5894242 MS |
4897 | for (; b && b != switch_stack->level; b = b->level_chain) |
4898 | { | |
4899 | tree new_decls = b->names; | |
4900 | for (; new_decls; new_decls = TREE_CHAIN (new_decls)) | |
4901 | { | |
4902 | if (TREE_CODE (new_decls) == VAR_DECL | |
4903 | /* Don't complain about crossing initialization | |
4904 | of internal entities. They can't be accessed, | |
4905 | and they should be cleaned up | |
4906 | by the time we get to the label. */ | |
4907 | && ! DECL_ARTIFICIAL (new_decls) | |
4908 | && ((DECL_INITIAL (new_decls) != NULL_TREE | |
4909 | && DECL_INITIAL (new_decls) != error_mark_node) | |
4910 | || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls)))) | |
4911 | { | |
4912 | if (! identified) | |
8251199e | 4913 | error ("jump to case label"); |
a5894242 | 4914 | identified = 1; |
8251199e | 4915 | cp_error_at (" crosses initialization of `%#D'", |
a5894242 MS |
4916 | new_decls); |
4917 | } | |
4918 | } | |
4919 | } | |
4920 | ||
8d08fdba MS |
4921 | /* After labels, make any new cleanups go into their |
4922 | own new (temporary) binding contour. */ | |
4923 | ||
4924 | current_binding_level->more_cleanups_ok = 0; | |
4925 | current_function_return_value = NULL_TREE; | |
4926 | } | |
4927 | \f | |
4928 | /* Return the list of declarations of the current level. | |
4929 | Note that this list is in reverse order unless/until | |
4930 | you nreverse it; and when you do nreverse it, you must | |
4931 | store the result back using `storedecls' or you will lose. */ | |
4932 | ||
4933 | tree | |
4934 | getdecls () | |
4935 | { | |
4936 | return current_binding_level->names; | |
4937 | } | |
4938 | ||
4939 | /* Return the list of type-tags (for structs, etc) of the current level. */ | |
4940 | ||
4941 | tree | |
4942 | gettags () | |
4943 | { | |
4944 | return current_binding_level->tags; | |
4945 | } | |
4946 | ||
4947 | /* Store the list of declarations of the current level. | |
4948 | This is done for the parameter declarations of a function being defined, | |
4949 | after they are modified in the light of any missing parameters. */ | |
4950 | ||
4951 | static void | |
4952 | storedecls (decls) | |
4953 | tree decls; | |
4954 | { | |
4955 | current_binding_level->names = decls; | |
4956 | } | |
4957 | ||
4958 | /* Similarly, store the list of tags of the current level. */ | |
4959 | ||
280f9385 | 4960 | void |
8d08fdba MS |
4961 | storetags (tags) |
4962 | tree tags; | |
4963 | { | |
4964 | current_binding_level->tags = tags; | |
4965 | } | |
4966 | \f | |
4967 | /* Given NAME, an IDENTIFIER_NODE, | |
4968 | return the structure (or union or enum) definition for that name. | |
4969 | Searches binding levels from BINDING_LEVEL up to the global level. | |
4970 | If THISLEVEL_ONLY is nonzero, searches only the specified context | |
4971 | (but skips any tag-transparent contexts to find one that is | |
4972 | meaningful for tags). | |
4973 | FORM says which kind of type the caller wants; | |
4974 | it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE. | |
4975 | If the wrong kind of type is found, and it's not a template, an error is | |
4976 | reported. */ | |
4977 | ||
4978 | static tree | |
4979 | lookup_tag (form, name, binding_level, thislevel_only) | |
4980 | enum tree_code form; | |
8d08fdba | 4981 | tree name; |
cffa8729 | 4982 | struct binding_level *binding_level; |
8d08fdba MS |
4983 | int thislevel_only; |
4984 | { | |
4985 | register struct binding_level *level; | |
36a117a5 MM |
4986 | /* Non-zero if, we should look past a pseudo-global level, even if |
4987 | THISLEVEL_ONLY. */ | |
4988 | int allow_pseudo_global = 1; | |
8d08fdba MS |
4989 | |
4990 | for (level = binding_level; level; level = level->level_chain) | |
4991 | { | |
4992 | register tree tail; | |
4993 | if (ANON_AGGRNAME_P (name)) | |
4994 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
4995 | { | |
4996 | /* There's no need for error checking here, because | |
4997 | anon names are unique throughout the compilation. */ | |
4998 | if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name) | |
4999 | return TREE_VALUE (tail); | |
5000 | } | |
2c73f9f5 ML |
5001 | else if (level->namespace_p) |
5002 | /* Do namespace lookup. */ | |
6c011b01 | 5003 | for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail)) |
2c73f9f5 | 5004 | { |
36a117a5 MM |
5005 | tree old = binding_for_name (name, tail); |
5006 | ||
5007 | /* If we just skipped past a pseudo global level, even | |
5008 | though THISLEVEL_ONLY, and we find a template class | |
5009 | declaration, then we use the _TYPE node for the | |
5010 | template. See the example below. */ | |
5011 | if (thislevel_only && !allow_pseudo_global | |
68642fb6 | 5012 | && old && BINDING_VALUE (old) |
36a117a5 MM |
5013 | && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old))) |
5014 | old = TREE_TYPE (BINDING_VALUE (old)); | |
68642fb6 | 5015 | else |
36a117a5 MM |
5016 | old = BINDING_TYPE (old); |
5017 | ||
2c73f9f5 ML |
5018 | /* If it has an original type, it is a typedef, and we |
5019 | should not return it. */ | |
5020 | if (old && DECL_ORIGINAL_TYPE (TYPE_NAME (old))) | |
5021 | old = NULL_TREE; | |
5022 | if (old && TREE_CODE (old) != form | |
5023 | && !(form != ENUMERAL_TYPE && TREE_CODE (old) == TEMPLATE_DECL)) | |
5024 | { | |
8251199e | 5025 | cp_error ("`%#D' redeclared as %C", old, form); |
2c73f9f5 ML |
5026 | return NULL_TREE; |
5027 | } | |
5028 | if (old) | |
5029 | return old; | |
5030 | if (thislevel_only || tail == global_namespace) | |
5031 | return NULL_TREE; | |
5032 | } | |
8d08fdba MS |
5033 | else |
5034 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
5035 | { | |
a80e4195 | 5036 | if (TREE_PURPOSE (tail) == name) |
8d08fdba MS |
5037 | { |
5038 | enum tree_code code = TREE_CODE (TREE_VALUE (tail)); | |
5039 | /* Should tighten this up; it'll probably permit | |
5040 | UNION_TYPE and a struct template, for example. */ | |
5041 | if (code != form | |
5566b478 | 5042 | && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL)) |
8d08fdba MS |
5043 | { |
5044 | /* Definition isn't the kind we were looking for. */ | |
8251199e | 5045 | cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail), |
8d08fdba | 5046 | form); |
72b7eeff | 5047 | return NULL_TREE; |
8d08fdba MS |
5048 | } |
5049 | return TREE_VALUE (tail); | |
5050 | } | |
5051 | } | |
5052 | if (thislevel_only && ! level->tag_transparent) | |
5566b478 | 5053 | { |
36a117a5 | 5054 | if (level->pseudo_global && allow_pseudo_global) |
5566b478 | 5055 | { |
36a117a5 | 5056 | /* We must deal with cases like this: |
68642fb6 | 5057 | |
36a117a5 MM |
5058 | template <class T> struct S; |
5059 | template <class T> struct S {}; | |
68642fb6 | 5060 | |
36a117a5 MM |
5061 | When looking up `S', for the second declaration, we |
5062 | would like to find the first declaration. But, we | |
5063 | are in the pseudo-global level created for the | |
5064 | template parameters, rather than the (surrounding) | |
5065 | namespace level. Thus, we keep going one more level, | |
5066 | even though THISLEVEL_ONLY is non-zero. */ | |
5067 | allow_pseudo_global = 0; | |
5068 | continue; | |
5566b478 | 5069 | } |
36a117a5 MM |
5070 | else |
5071 | return NULL_TREE; | |
5566b478 | 5072 | } |
8d08fdba MS |
5073 | } |
5074 | return NULL_TREE; | |
5075 | } | |
5076 | ||
bd6dd845 | 5077 | #if 0 |
8d08fdba MS |
5078 | void |
5079 | set_current_level_tags_transparency (tags_transparent) | |
5080 | int tags_transparent; | |
5081 | { | |
5082 | current_binding_level->tag_transparent = tags_transparent; | |
5083 | } | |
bd6dd845 | 5084 | #endif |
8d08fdba MS |
5085 | |
5086 | /* Given a type, find the tag that was defined for it and return the tag name. | |
5087 | Otherwise return 0. However, the value can never be 0 | |
5088 | in the cases in which this is used. | |
5089 | ||
5090 | C++: If NAME is non-zero, this is the new name to install. This is | |
5091 | done when replacing anonymous tags with real tag names. */ | |
5092 | ||
5093 | static tree | |
5094 | lookup_tag_reverse (type, name) | |
5095 | tree type; | |
5096 | tree name; | |
5097 | { | |
5098 | register struct binding_level *level; | |
5099 | ||
5100 | for (level = current_binding_level; level; level = level->level_chain) | |
5101 | { | |
5102 | register tree tail; | |
5103 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
5104 | { | |
5105 | if (TREE_VALUE (tail) == type) | |
5106 | { | |
5107 | if (name) | |
5108 | TREE_PURPOSE (tail) = name; | |
5109 | return TREE_PURPOSE (tail); | |
5110 | } | |
5111 | } | |
5112 | } | |
5113 | return NULL_TREE; | |
5114 | } | |
8d08fdba | 5115 | \f |
a9aedbc2 | 5116 | /* Look up NAME in the NAMESPACE. */ |
e92cc029 | 5117 | |
a9aedbc2 MS |
5118 | tree |
5119 | lookup_namespace_name (namespace, name) | |
5120 | tree namespace, name; | |
5121 | { | |
30394414 | 5122 | tree val; |
f30c84c9 | 5123 | tree template_id = NULL_TREE; |
2c73f9f5 | 5124 | |
30394414 | 5125 | my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370); |
1231fb96 | 5126 | |
1231fb96 | 5127 | if (TREE_CODE (name) == NAMESPACE_DECL) |
d8f8dca1 | 5128 | /* This happens for A::B<int> when B is a namespace. */ |
1231fb96 | 5129 | return name; |
d8f8dca1 MM |
5130 | else if (TREE_CODE (name) == TEMPLATE_DECL) |
5131 | { | |
5132 | /* This happens for A::B where B is a template, and there are no | |
5133 | template arguments. */ | |
5134 | cp_error ("invalid use of `%D'", name); | |
5135 | return error_mark_node; | |
5136 | } | |
1231fb96 | 5137 | |
b262d64c JM |
5138 | namespace = ORIGINAL_NAMESPACE (namespace); |
5139 | ||
f30c84c9 MM |
5140 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) |
5141 | { | |
5142 | template_id = name; | |
5143 | name = TREE_OPERAND (name, 0); | |
5144 | if (TREE_CODE (name) == OVERLOAD) | |
5145 | name = DECL_NAME (OVL_CURRENT (name)); | |
5146 | else if (TREE_CODE_CLASS (TREE_CODE (name)) == 'd') | |
5147 | name = DECL_NAME (name); | |
5148 | } | |
5149 | ||
30394414 | 5150 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373); |
68642fb6 | 5151 | |
87e3dbc9 | 5152 | val = make_node (CPLUS_BINDING); |
52c11ef6 | 5153 | if (!qualified_lookup_using_namespace (name, namespace, val, 0)) |
2c73f9f5 ML |
5154 | return error_mark_node; |
5155 | ||
5156 | if (BINDING_VALUE (val)) | |
1c35f5b6 JM |
5157 | { |
5158 | val = BINDING_VALUE (val); | |
5159 | ||
f30c84c9 MM |
5160 | if (template_id) |
5161 | { | |
5162 | if (DECL_CLASS_TEMPLATE_P (val)) | |
68642fb6 | 5163 | val = lookup_template_class (val, |
f30c84c9 MM |
5164 | TREE_OPERAND (template_id, 1), |
5165 | /*in_decl=*/NULL_TREE, | |
5166 | /*context=*/NULL_TREE, | |
5167 | /*entering_scope=*/0); | |
5168 | else if (DECL_FUNCTION_TEMPLATE_P (val) | |
5169 | || TREE_CODE (val) == OVERLOAD) | |
68642fb6 | 5170 | val = lookup_template_function (val, |
f30c84c9 MM |
5171 | TREE_OPERAND (template_id, 1)); |
5172 | else | |
5173 | { | |
5174 | cp_error ("`%D::%D' is not a template", | |
5175 | namespace, name); | |
5176 | return error_mark_node; | |
5177 | } | |
5178 | } | |
5179 | ||
1c35f5b6 JM |
5180 | /* If we have a single function from a using decl, pull it out. */ |
5181 | if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val)) | |
5182 | val = OVL_FUNCTION (val); | |
5183 | return val; | |
5184 | } | |
5185 | ||
8251199e | 5186 | cp_error ("`%D' undeclared in namespace `%D'", name, namespace); |
30394414 | 5187 | return error_mark_node; |
a9aedbc2 MS |
5188 | } |
5189 | ||
7ddedda4 MM |
5190 | /* Hash a TYPENAME_TYPE. K is really of type `tree'. */ |
5191 | ||
5192 | static unsigned long | |
5193 | typename_hash (k) | |
5194 | hash_table_key k; | |
5195 | { | |
5196 | unsigned long hash; | |
5197 | tree t; | |
5198 | ||
5199 | t = (tree) k; | |
5200 | hash = (((unsigned long) TYPE_CONTEXT (t)) | |
5201 | ^ ((unsigned long) DECL_NAME (TYPE_NAME (t)))); | |
5202 | ||
5203 | return hash; | |
5204 | } | |
5205 | ||
5206 | /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */ | |
5207 | ||
5208 | static boolean | |
5209 | typename_compare (k1, k2) | |
5210 | hash_table_key k1; | |
5211 | hash_table_key k2; | |
5212 | { | |
5213 | tree t1; | |
5214 | tree t2; | |
5215 | tree d1; | |
5216 | tree d2; | |
5217 | ||
5218 | t1 = (tree) k1; | |
5219 | t2 = (tree) k2; | |
5220 | d1 = TYPE_NAME (t1); | |
5221 | d2 = TYPE_NAME (t2); | |
68642fb6 | 5222 | |
7ddedda4 MM |
5223 | return (DECL_NAME (d1) == DECL_NAME (d2) |
5224 | && same_type_p (TYPE_CONTEXT (t1), TYPE_CONTEXT (t2)) | |
68642fb6 | 5225 | && ((TREE_TYPE (t1) != NULL_TREE) |
7ddedda4 MM |
5226 | == (TREE_TYPE (t2) != NULL_TREE)) |
5227 | && same_type_p (TREE_TYPE (t1), TREE_TYPE (t2)) | |
5228 | && TYPENAME_TYPE_FULLNAME (t1) == TYPENAME_TYPE_FULLNAME (t2)); | |
5229 | } | |
5230 | ||
45869a6c MM |
5231 | /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is |
5232 | the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE | |
5233 | is non-NULL, this type is being created by the implicit typename | |
5234 | extension, and BASE_TYPE is a type named `t' in some base class of | |
68642fb6 | 5235 | `T' which depends on template parameters. |
45869a6c MM |
5236 | |
5237 | Returns the new TYPENAME_TYPE. */ | |
5238 | ||
5239 | tree | |
5240 | build_typename_type (context, name, fullname, base_type) | |
5241 | tree context; | |
5242 | tree name; | |
5243 | tree fullname; | |
5244 | tree base_type; | |
5245 | { | |
5246 | tree t; | |
5247 | tree d; | |
7ddedda4 | 5248 | struct hash_entry* e; |
45869a6c | 5249 | |
7ddedda4 MM |
5250 | static struct hash_table ht; |
5251 | ||
9cd64686 MM |
5252 | if (!ht.table) |
5253 | { | |
5254 | static struct hash_table *h = &ht; | |
68642fb6 | 5255 | if (!hash_table_init (&ht, &hash_newfunc, &typename_hash, |
9cd64686 MM |
5256 | &typename_compare)) |
5257 | fatal ("virtual memory exhausted"); | |
5258 | ggc_add_tree_hash_table_root (&h, 1); | |
5259 | } | |
45869a6c MM |
5260 | |
5261 | /* Build the TYPENAME_TYPE. */ | |
33848bb0 | 5262 | t = make_aggr_type (TYPENAME_TYPE); |
45869a6c MM |
5263 | TYPE_CONTEXT (t) = FROB_CONTEXT (context); |
5264 | TYPENAME_TYPE_FULLNAME (t) = fullname; | |
5265 | TREE_TYPE (t) = base_type; | |
45869a6c MM |
5266 | |
5267 | /* Build the corresponding TYPE_DECL. */ | |
5268 | d = build_decl (TYPE_DECL, name, t); | |
5269 | TYPE_NAME (TREE_TYPE (d)) = d; | |
5270 | TYPE_STUB_DECL (TREE_TYPE (d)) = d; | |
5271 | DECL_CONTEXT (d) = FROB_CONTEXT (context); | |
2642b9bf | 5272 | DECL_ARTIFICIAL (d) = 1; |
45869a6c | 5273 | |
7ddedda4 MM |
5274 | /* See if we already have this type. */ |
5275 | e = hash_lookup (&ht, t, /*create=*/false, /*copy=*/0); | |
5276 | if (e) | |
87e3dbc9 | 5277 | t = (tree) e->key; |
7ddedda4 MM |
5278 | else |
5279 | /* Insert the type into the table. */ | |
5280 | hash_lookup (&ht, t, /*create=*/true, /*copy=*/0); | |
5281 | ||
45869a6c MM |
5282 | return t; |
5283 | } | |
5284 | ||
3baa501d MM |
5285 | /* Resolve `typename CONTEXT::NAME'. Returns an appropriate type, |
5286 | unless an error occurs, in which case error_mark_node is returned. | |
5287 | If COMPLAIN zero, don't complain about any errors that occur. */ | |
5288 | ||
5566b478 | 5289 | tree |
3baa501d | 5290 | make_typename_type (context, name, complain) |
5566b478 | 5291 | tree context, name; |
3baa501d | 5292 | int complain; |
5566b478 | 5293 | { |
b2b7d40a | 5294 | tree fullname; |
a80e4195 | 5295 | |
653cc74a | 5296 | if (TREE_CODE_CLASS (TREE_CODE (name)) == 't') |
78638e24 | 5297 | { |
68642fb6 UD |
5298 | if (!(TYPE_LANG_SPECIFIC (name) |
5299 | && (CLASSTYPE_IS_TEMPLATE (name) | |
78638e24 MM |
5300 | || CLASSTYPE_USE_TEMPLATE (name)))) |
5301 | name = TYPE_IDENTIFIER (name); | |
5302 | else | |
5303 | /* Create a TEMPLATE_ID_EXPR for the type. */ | |
5304 | name = build_nt (TEMPLATE_ID_EXPR, | |
5305 | CLASSTYPE_TI_TEMPLATE (name), | |
5306 | CLASSTYPE_TI_ARGS (name)); | |
5307 | } | |
653cc74a | 5308 | else if (TREE_CODE (name) == TYPE_DECL) |
a80e4195 | 5309 | name = DECL_NAME (name); |
b2b7d40a JM |
5310 | |
5311 | fullname = name; | |
5312 | ||
5313 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) | |
11686454 JM |
5314 | { |
5315 | name = TREE_OPERAND (name, 0); | |
5316 | if (TREE_CODE (name) == TEMPLATE_DECL) | |
5317 | name = TREE_OPERAND (fullname, 0) = DECL_NAME (name); | |
5318 | } | |
b2b7d40a | 5319 | if (TREE_CODE (name) != IDENTIFIER_NODE) |
a80e4195 | 5320 | my_friendly_abort (2000); |
5566b478 | 5321 | |
04ddee1b BK |
5322 | if (TREE_CODE (context) == NAMESPACE_DECL) |
5323 | { | |
5324 | /* We can get here from typename_sub0 in the explicit_template_type | |
5325 | expansion. Just fail. */ | |
3baa501d MM |
5326 | if (complain) |
5327 | cp_error ("no class template named `%#T' in `%#T'", | |
5328 | name, context); | |
04ddee1b BK |
5329 | return error_mark_node; |
5330 | } | |
5331 | ||
85b71cf2 | 5332 | if (! uses_template_parms (context) |
b77ead33 | 5333 | || currently_open_class (context)) |
5566b478 | 5334 | { |
b2b7d40a JM |
5335 | if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR) |
5336 | { | |
ad810b22 | 5337 | tree tmpl = NULL_TREE; |
b2b7d40a | 5338 | if (IS_AGGR_TYPE (context)) |
ad810b22 MM |
5339 | tmpl = lookup_field (context, name, 0, 0); |
5340 | if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl)) | |
b2b7d40a | 5341 | { |
3baa501d MM |
5342 | if (complain) |
5343 | cp_error ("no class template named `%#T' in `%#T'", | |
5344 | name, context); | |
b2b7d40a JM |
5345 | return error_mark_node; |
5346 | } | |
ffb690bd | 5347 | |
68642fb6 | 5348 | return lookup_template_class (tmpl, |
ad810b22 | 5349 | TREE_OPERAND (fullname, 1), |
68642fb6 | 5350 | NULL_TREE, context, |
ad810b22 | 5351 | /*entering_scope=*/0); |
b2b7d40a JM |
5352 | } |
5353 | else | |
5566b478 | 5354 | { |
b4f70b3d | 5355 | tree t; |
68642fb6 | 5356 | |
b4f70b3d | 5357 | if (!IS_AGGR_TYPE (context)) |
b2b7d40a | 5358 | { |
3baa501d MM |
5359 | if (complain) |
5360 | cp_error ("no type named `%#T' in `%#T'", name, context); | |
b2b7d40a JM |
5361 | return error_mark_node; |
5362 | } | |
1107c4b3 | 5363 | |
b4f70b3d | 5364 | t = lookup_field (context, name, 0, 1); |
7d4bdeed MM |
5365 | if (t) |
5366 | return TREE_TYPE (t); | |
5566b478 | 5367 | } |
5566b478 | 5368 | } |
11249cf0 MM |
5369 | |
5370 | /* If the CONTEXT is not a template type, then either the field is | |
5371 | there now or its never going to be. */ | |
b4f70b3d | 5372 | if (!uses_template_parms (context)) |
11249cf0 | 5373 | { |
3baa501d MM |
5374 | if (complain) |
5375 | cp_error ("no type named `%#T' in `%#T'", name, context); | |
11249cf0 MM |
5376 | return error_mark_node; |
5377 | } | |
68642fb6 UD |
5378 | |
5379 | ||
45869a6c | 5380 | return build_typename_type (context, name, fullname, NULL_TREE); |
5566b478 MS |
5381 | } |
5382 | ||
2c73f9f5 ML |
5383 | /* Select the right _DECL from multiple choices. */ |
5384 | ||
5385 | static tree | |
52c11ef6 | 5386 | select_decl (binding, flags) |
2c73f9f5 | 5387 | tree binding; |
52c11ef6 | 5388 | int flags; |
2c73f9f5 ML |
5389 | { |
5390 | tree val; | |
5391 | val = BINDING_VALUE (binding); | |
52c11ef6 | 5392 | if (LOOKUP_NAMESPACES_ONLY (flags)) |
3e3f722c ML |
5393 | { |
5394 | /* We are not interested in types. */ | |
5395 | if (val && TREE_CODE (val) == NAMESPACE_DECL) | |
5396 | return val; | |
5397 | return NULL_TREE; | |
5398 | } | |
68642fb6 | 5399 | |
2c73f9f5 ML |
5400 | /* If we could have a type and |
5401 | we have nothing or we need a type and have none. */ | |
5402 | if (BINDING_TYPE (binding) | |
52c11ef6 JM |
5403 | && (!val || ((flags & LOOKUP_PREFER_TYPES) |
5404 | && TREE_CODE (val) != TYPE_DECL))) | |
2c73f9f5 ML |
5405 | val = TYPE_STUB_DECL (BINDING_TYPE (binding)); |
5406 | /* Don't return non-types if we really prefer types. */ | |
52c11ef6 | 5407 | else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL |
c592d5d2 ML |
5408 | && (TREE_CODE (val) != TEMPLATE_DECL |
5409 | || !DECL_CLASS_TEMPLATE_P (val))) | |
2c73f9f5 | 5410 | val = NULL_TREE; |
1c35f5b6 | 5411 | |
2c73f9f5 ML |
5412 | return val; |
5413 | } | |
5414 | ||
2c169bab JM |
5415 | /* Unscoped lookup of a global: iterate over current namespaces, |
5416 | considering using-directives. If SPACESP is non-NULL, store a list | |
5417 | of the namespaces we've considered in it. */ | |
ea9635c7 | 5418 | |
2c169bab JM |
5419 | tree |
5420 | unqualified_namespace_lookup (name, flags, spacesp) | |
ea9635c7 | 5421 | tree name; |
52c11ef6 | 5422 | int flags; |
2c169bab | 5423 | tree *spacesp; |
ea9635c7 | 5424 | { |
87e3dbc9 | 5425 | tree b = make_node (CPLUS_BINDING); |
ea9635c7 ML |
5426 | tree initial = current_decl_namespace(); |
5427 | tree scope = initial; | |
5428 | tree siter; | |
5429 | struct binding_level *level; | |
5430 | tree val = NULL_TREE; | |
5431 | ||
2c169bab JM |
5432 | if (spacesp) |
5433 | *spacesp = NULL_TREE; | |
5434 | ||
5435 | for (; !val; scope = CP_DECL_CONTEXT (scope)) | |
ea9635c7 | 5436 | { |
2c169bab | 5437 | if (spacesp) |
e1b3e07d | 5438 | *spacesp = tree_cons (scope, NULL_TREE, *spacesp); |
ea9635c7 ML |
5439 | val = binding_for_name (name, scope); |
5440 | ||
5441 | /* Initialize binding for this context. */ | |
5442 | BINDING_VALUE (b) = BINDING_VALUE (val); | |
5443 | BINDING_TYPE (b) = BINDING_TYPE (val); | |
5444 | ||
5445 | /* Add all _DECLs seen through local using-directives. */ | |
68642fb6 | 5446 | for (level = current_binding_level; |
ea9635c7 ML |
5447 | !level->namespace_p; |
5448 | level = level->level_chain) | |
52c11ef6 | 5449 | if (!lookup_using_namespace (name, b, level->using_directives, |
2c169bab | 5450 | scope, flags, spacesp)) |
ea9635c7 | 5451 | /* Give up because of error. */ |
5b163de4 | 5452 | return error_mark_node; |
ea9635c7 ML |
5453 | |
5454 | /* Add all _DECLs seen through global using-directives. */ | |
5455 | /* XXX local and global using lists should work equally. */ | |
5456 | siter = initial; | |
5457 | while (1) | |
5458 | { | |
68642fb6 | 5459 | if (!lookup_using_namespace (name, b, DECL_NAMESPACE_USING (siter), |
2c169bab | 5460 | scope, flags, spacesp)) |
ea9635c7 | 5461 | /* Give up because of error. */ |
5b163de4 | 5462 | return error_mark_node; |
ea9635c7 ML |
5463 | if (siter == scope) break; |
5464 | siter = CP_DECL_CONTEXT (siter); | |
5465 | } | |
5466 | ||
52c11ef6 | 5467 | val = select_decl (b, flags); |
ea9635c7 ML |
5468 | if (scope == global_namespace) |
5469 | break; | |
ea9635c7 ML |
5470 | } |
5471 | return val; | |
5472 | } | |
5473 | ||
52c11ef6 JM |
5474 | /* Combine prefer_type and namespaces_only into flags. */ |
5475 | ||
5476 | static int | |
5477 | lookup_flags (prefer_type, namespaces_only) | |
5478 | int prefer_type, namespaces_only; | |
5479 | { | |
5480 | if (namespaces_only) | |
5481 | return LOOKUP_PREFER_NAMESPACES; | |
5482 | if (prefer_type > 1) | |
5483 | return LOOKUP_PREFER_TYPES; | |
5484 | if (prefer_type > 0) | |
5485 | return LOOKUP_PREFER_BOTH; | |
5486 | return 0; | |
5487 | } | |
5488 | ||
5489 | /* Given a lookup that returned VAL, use FLAGS to decide if we want to | |
5490 | ignore it or not. Subroutine of lookup_name_real. */ | |
5491 | ||
5492 | static tree | |
5493 | qualify_lookup (val, flags) | |
5494 | tree val; | |
5495 | int flags; | |
5496 | { | |
5497 | if (val == NULL_TREE) | |
5498 | return val; | |
6b945830 JM |
5499 | if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL) |
5500 | return val; | |
5501 | if ((flags & LOOKUP_PREFER_TYPES) | |
5502 | && (TREE_CODE (val) == TYPE_DECL | |
5503 | || ((flags & LOOKUP_TEMPLATES_EXPECTED) | |
5504 | && DECL_CLASS_TEMPLATE_P (val)))) | |
5505 | return val; | |
5506 | if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES)) | |
52c11ef6 JM |
5507 | return NULL_TREE; |
5508 | return val; | |
5509 | } | |
5510 | ||
235f734d MM |
5511 | /* Any other BINDING overrides an implicit TYPENAME. Warn about |
5512 | that. */ | |
5513 | ||
5514 | static void | |
5515 | warn_about_implicit_typename_lookup (typename, binding) | |
5516 | tree typename; | |
5517 | tree binding; | |
5518 | { | |
5519 | tree subtype = TREE_TYPE (TREE_TYPE (typename)); | |
5520 | tree name = DECL_NAME (typename); | |
5521 | ||
5522 | if (! (TREE_CODE (binding) == TEMPLATE_DECL | |
5523 | && CLASSTYPE_TEMPLATE_INFO (subtype) | |
5524 | && CLASSTYPE_TI_TEMPLATE (subtype) == binding) | |
5525 | && ! (TREE_CODE (binding) == TYPE_DECL | |
5526 | && same_type_p (TREE_TYPE (binding), subtype))) | |
5527 | { | |
68642fb6 | 5528 | cp_warning ("lookup of `%D' finds `%#D'", |
235f734d MM |
5529 | name, binding); |
5530 | cp_warning (" instead of `%D' from dependent base class", | |
5531 | typename); | |
5532 | cp_warning (" (use `typename %T::%D' if that's what you meant)", | |
5533 | constructor_name (current_class_type), name); | |
5534 | } | |
5535 | } | |
5536 | ||
8d08fdba MS |
5537 | /* Look up NAME in the current binding level and its superiors in the |
5538 | namespace of variables, functions and typedefs. Return a ..._DECL | |
5539 | node of some kind representing its definition if there is only one | |
5540 | such declaration, or return a TREE_LIST with all the overloaded | |
5541 | definitions if there are many, or return 0 if it is undefined. | |
5542 | ||
2c73f9f5 ML |
5543 | If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces. |
5544 | If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces). | |
a28e3c7f | 5545 | If PREFER_TYPE is -2, we're being called from yylex(). (UGLY) |
68642fb6 | 5546 | Otherwise we prefer non-TYPE_DECLs. |
f84b4be9 JM |
5547 | |
5548 | If NONCLASS is non-zero, we don't look for the NAME in class scope, | |
5549 | using IDENTIFIER_CLASS_VALUE. */ | |
8d08fdba | 5550 | |
824b9a4c | 5551 | static tree |
3e3f722c | 5552 | lookup_name_real (name, prefer_type, nonclass, namespaces_only) |
8d08fdba | 5553 | tree name; |
3e3f722c | 5554 | int prefer_type, nonclass, namespaces_only; |
8d08fdba | 5555 | { |
235f734d MM |
5556 | tree t; |
5557 | tree val = NULL_TREE; | |
a28e3c7f | 5558 | int yylex = 0; |
e1cd6e56 | 5559 | tree from_obj = NULL_TREE; |
52c11ef6 | 5560 | int flags; |
235f734d | 5561 | int val_is_implicit_typename = 0; |
8d08fdba | 5562 | |
3e3f722c ML |
5563 | /* Hack: copy flag set by parser, if set. */ |
5564 | if (only_namespace_names) | |
5565 | namespaces_only = 1; | |
52c11ef6 | 5566 | |
a28e3c7f MS |
5567 | if (prefer_type == -2) |
5568 | { | |
5569 | extern int looking_for_typename; | |
fc378698 | 5570 | tree type = NULL_TREE; |
a28e3c7f MS |
5571 | |
5572 | yylex = 1; | |
5573 | prefer_type = looking_for_typename; | |
e1cd6e56 | 5574 | |
52c11ef6 | 5575 | flags = lookup_flags (prefer_type, namespaces_only); |
52c11ef6 JM |
5576 | /* If the next thing is '<', class templates are types. */ |
5577 | if (looking_for_template) | |
5578 | flags |= LOOKUP_TEMPLATES_EXPECTED; | |
5579 | ||
653cc74a JM |
5580 | /* std:: becomes :: for now. */ |
5581 | if (got_scope == std_node) | |
5582 | got_scope = void_type_node; | |
5583 | ||
e1cd6e56 MS |
5584 | if (got_scope) |
5585 | type = got_scope; | |
dff6b454 | 5586 | else if (got_object != error_mark_node) |
e1cd6e56 | 5587 | type = got_object; |
68642fb6 | 5588 | |
e1cd6e56 | 5589 | if (type) |
a28e3c7f | 5590 | { |
e1cd6e56 | 5591 | if (type == error_mark_node) |
f376e137 | 5592 | return error_mark_node; |
a80e4195 MS |
5593 | if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type)) |
5594 | type = TREE_TYPE (type); | |
5566b478 | 5595 | |
2b9dc906 JM |
5596 | if (TYPE_P (type)) |
5597 | type = complete_type (type); | |
5566b478 | 5598 | |
a1774733 | 5599 | if (TREE_CODE (type) == VOID_TYPE) |
2c73f9f5 ML |
5600 | type = global_namespace; |
5601 | if (TREE_CODE (type) == NAMESPACE_DECL) | |
a9aedbc2 | 5602 | { |
87e3dbc9 | 5603 | val = make_node (CPLUS_BINDING); |
6ad07332 | 5604 | flags |= LOOKUP_COMPLAIN; |
52c11ef6 | 5605 | if (!qualified_lookup_using_namespace (name, type, val, flags)) |
2c73f9f5 | 5606 | return NULL_TREE; |
52c11ef6 | 5607 | val = select_decl (val, flags); |
a9aedbc2 | 5608 | } |
5566b478 | 5609 | else if (! IS_AGGR_TYPE (type) |
5156628f | 5610 | || TREE_CODE (type) == TEMPLATE_TYPE_PARM |
73b0fce8 | 5611 | || TREE_CODE (type) == TEMPLATE_TEMPLATE_PARM |
5156628f | 5612 | || TREE_CODE (type) == TYPENAME_TYPE) |
e92cc029 | 5613 | /* Someone else will give an error about this if needed. */ |
a28e3c7f | 5614 | val = NULL_TREE; |
e1cd6e56 | 5615 | else if (type == current_class_type) |
a28e3c7f | 5616 | val = IDENTIFIER_CLASS_VALUE (name); |
a28e3c7f | 5617 | else |
70adf8a9 JM |
5618 | { |
5619 | val = lookup_member (type, name, 0, prefer_type); | |
5620 | type_access_control (type, val); | |
5621 | } | |
a28e3c7f | 5622 | } |
e1cd6e56 MS |
5623 | else |
5624 | val = NULL_TREE; | |
5625 | ||
594740f3 | 5626 | if (got_scope) |
e1cd6e56 | 5627 | goto done; |
594740f3 | 5628 | else if (got_object && val) |
e1cd6e56 | 5629 | from_obj = val; |
a28e3c7f | 5630 | } |
52c11ef6 | 5631 | else |
5b163de4 JM |
5632 | { |
5633 | flags = lookup_flags (prefer_type, namespaces_only); | |
5634 | /* If we're not parsing, we need to complain. */ | |
5635 | flags |= LOOKUP_COMPLAIN; | |
5636 | } | |
e76a2646 | 5637 | |
d8f8dca1 | 5638 | /* First, look in non-namespace scopes. */ |
6f1b4c42 JM |
5639 | |
5640 | if (current_class_type == NULL_TREE) | |
5641 | nonclass = 1; | |
5642 | ||
235f734d | 5643 | for (t = IDENTIFIER_BINDING (name); t; t = TREE_CHAIN (t)) |
d8f8dca1 | 5644 | { |
235f734d MM |
5645 | tree binding; |
5646 | ||
5647 | if (!LOCAL_BINDING_P (t) && nonclass) | |
d8f8dca1 MM |
5648 | /* We're not looking for class-scoped bindings, so keep going. */ |
5649 | continue; | |
68642fb6 | 5650 | |
d8f8dca1 | 5651 | /* If this is the kind of thing we're looking for, we're done. */ |
235f734d MM |
5652 | if (qualify_lookup (BINDING_VALUE (t), flags)) |
5653 | binding = BINDING_VALUE (t); | |
68642fb6 | 5654 | else if ((flags & LOOKUP_PREFER_TYPES) |
235f734d MM |
5655 | && qualify_lookup (BINDING_TYPE (t), flags)) |
5656 | binding = BINDING_TYPE (t); | |
5657 | else | |
5658 | binding = NULL_TREE; | |
5659 | ||
70adf8a9 JM |
5660 | /* Handle access control on types from enclosing or base classes. */ |
5661 | if (binding && ! yylex | |
5662 | && BINDING_LEVEL (t) && BINDING_LEVEL (t)->parm_flag == 2) | |
5663 | type_access_control (BINDING_LEVEL (t)->this_class, binding); | |
5664 | ||
235f734d | 5665 | if (binding |
83233dca | 5666 | && (!val || !IMPLICIT_TYPENAME_TYPE_DECL_P (binding))) |
d8f8dca1 | 5667 | { |
235f734d MM |
5668 | if (val_is_implicit_typename && !yylex) |
5669 | warn_about_implicit_typename_lookup (val, binding); | |
5670 | val = binding; | |
68642fb6 | 5671 | val_is_implicit_typename |
83233dca | 5672 | = IMPLICIT_TYPENAME_TYPE_DECL_P (val); |
235f734d MM |
5673 | if (!val_is_implicit_typename) |
5674 | break; | |
d8f8dca1 MM |
5675 | } |
5676 | } | |
f181d4ae | 5677 | |
235f734d MM |
5678 | /* Now lookup in namespace scopes. */ |
5679 | if (!val || val_is_implicit_typename) | |
e76a2646 | 5680 | { |
2c169bab | 5681 | t = unqualified_namespace_lookup (name, flags, 0); |
235f734d | 5682 | if (t) |
c1def683 | 5683 | { |
235f734d MM |
5684 | if (val_is_implicit_typename && !yylex) |
5685 | warn_about_implicit_typename_lookup (val, t); | |
5686 | val = t; | |
c1def683 JM |
5687 | } |
5688 | } | |
5689 | ||
a28e3c7f | 5690 | done: |
8d08fdba MS |
5691 | if (val) |
5692 | { | |
c91a56d2 | 5693 | /* This should only warn about types used in qualified-ids. */ |
e1cd6e56 | 5694 | if (from_obj && from_obj != val) |
5566b478 | 5695 | { |
c91a56d2 MS |
5696 | if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL |
5697 | && TREE_CODE (val) == TYPE_DECL | |
5698 | && TREE_TYPE (from_obj) != TREE_TYPE (val)) | |
5699 | { | |
8251199e | 5700 | cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')", |
c91a56d2 | 5701 | name, got_object, TREE_TYPE (from_obj)); |
8251199e | 5702 | cp_pedwarn (" does not match lookup in the current scope (`%#T')", |
c91a56d2 MS |
5703 | TREE_TYPE (val)); |
5704 | } | |
594740f3 | 5705 | |
b8b1a3c1 JM |
5706 | /* We don't change val to from_obj if got_object depends on |
5707 | template parms because that breaks implicit typename for | |
5708 | destructor calls. */ | |
5709 | if (! uses_template_parms (got_object)) | |
53fdbb3b | 5710 | val = from_obj; |
5566b478 | 5711 | } |
e1cd6e56 | 5712 | |
0c64a9ca JM |
5713 | /* If we have a single function from a using decl, pull it out. */ |
5714 | if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val)) | |
5715 | val = OVL_FUNCTION (val); | |
8d08fdba | 5716 | } |
e1cd6e56 MS |
5717 | else if (from_obj) |
5718 | val = from_obj; | |
8d08fdba MS |
5719 | |
5720 | return val; | |
5721 | } | |
5722 | ||
700f8a87 MS |
5723 | tree |
5724 | lookup_name_nonclass (name) | |
5725 | tree name; | |
5726 | { | |
3e3f722c | 5727 | return lookup_name_real (name, 0, 1, 0); |
700f8a87 MS |
5728 | } |
5729 | ||
2c73f9f5 ML |
5730 | tree |
5731 | lookup_function_nonclass (name, args) | |
5732 | tree name; | |
5733 | tree args; | |
5734 | { | |
5735 | return lookup_arg_dependent (name, lookup_name_nonclass (name), args); | |
5736 | } | |
5737 | ||
3e3f722c ML |
5738 | tree |
5739 | lookup_name_namespace_only (name) | |
5740 | tree name; | |
5741 | { | |
5742 | /* type-or-namespace, nonclass, namespace_only */ | |
5743 | return lookup_name_real (name, 1, 1, 1); | |
5744 | } | |
5745 | ||
700f8a87 MS |
5746 | tree |
5747 | lookup_name (name, prefer_type) | |
5748 | tree name; | |
5749 | int prefer_type; | |
5750 | { | |
3e3f722c | 5751 | return lookup_name_real (name, prefer_type, 0, 0); |
700f8a87 MS |
5752 | } |
5753 | ||
a7d2d407 MM |
5754 | /* Similar to `lookup_name' but look only in the innermost non-class |
5755 | binding level. */ | |
8d08fdba MS |
5756 | |
5757 | tree | |
5758 | lookup_name_current_level (name) | |
5759 | tree name; | |
5760 | { | |
a7d2d407 MM |
5761 | struct binding_level *b; |
5762 | tree t = NULL_TREE; | |
8d08fdba | 5763 | |
a7d2d407 MM |
5764 | b = current_binding_level; |
5765 | while (b->parm_flag == 2) | |
5766 | b = b->level_chain; | |
5767 | ||
5768 | if (b->namespace_p) | |
8d08fdba | 5769 | { |
5fdaba89 | 5770 | t = IDENTIFIER_NAMESPACE_VALUE (name); |
8d08fdba MS |
5771 | |
5772 | /* extern "C" function() */ | |
5773 | if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST) | |
5774 | t = TREE_VALUE (t); | |
5775 | } | |
68642fb6 | 5776 | else if (IDENTIFIER_BINDING (name) |
f181d4ae | 5777 | && LOCAL_BINDING_P (IDENTIFIER_BINDING (name))) |
8d08fdba | 5778 | { |
a4443a08 MS |
5779 | while (1) |
5780 | { | |
f181d4ae MM |
5781 | if (BINDING_LEVEL (IDENTIFIER_BINDING (name)) == b) |
5782 | return IDENTIFIER_VALUE (name); | |
68642fb6 | 5783 | |
9ed182dc JM |
5784 | if (b->keep == 2) |
5785 | b = b->level_chain; | |
5786 | else | |
5787 | break; | |
5788 | } | |
5789 | } | |
5790 | ||
5791 | return t; | |
5792 | } | |
5793 | ||
5794 | /* Like lookup_name_current_level, but for types. */ | |
5795 | ||
5796 | tree | |
5797 | lookup_type_current_level (name) | |
5798 | tree name; | |
5799 | { | |
5800 | register tree t = NULL_TREE; | |
5801 | ||
5802 | my_friendly_assert (! current_binding_level->namespace_p, 980716); | |
5803 | ||
5804 | if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE | |
5805 | && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node) | |
5806 | { | |
5807 | struct binding_level *b = current_binding_level; | |
5808 | while (1) | |
5809 | { | |
5810 | if (purpose_member (name, b->type_shadowed)) | |
5811 | return REAL_IDENTIFIER_TYPE_VALUE (name); | |
a4443a08 MS |
5812 | if (b->keep == 2) |
5813 | b = b->level_chain; | |
5814 | else | |
5815 | break; | |
5816 | } | |
8d08fdba MS |
5817 | } |
5818 | ||
5819 | return t; | |
5820 | } | |
3e3f722c ML |
5821 | |
5822 | void | |
5823 | begin_only_namespace_names () | |
5824 | { | |
5825 | only_namespace_names = 1; | |
5826 | } | |
5827 | ||
5828 | void | |
5829 | end_only_namespace_names () | |
5830 | { | |
5831 | only_namespace_names = 0; | |
5832 | } | |
8d08fdba MS |
5833 | \f |
5834 | /* Arrange for the user to get a source line number, even when the | |
5835 | compiler is going down in flames, so that she at least has a | |
5836 | chance of working around problems in the compiler. We used to | |
5837 | call error(), but that let the segmentation fault continue | |
5838 | through; now, it's much more passive by asking them to send the | |
5839 | maintainers mail about the problem. */ | |
5840 | ||
5841 | static void | |
5842 | signal_catch (sig) | |
7dee3f36 | 5843 | int sig ATTRIBUTE_UNUSED; |
8d08fdba MS |
5844 | { |
5845 | signal (SIGSEGV, SIG_DFL); | |
5846 | #ifdef SIGIOT | |
5847 | signal (SIGIOT, SIG_DFL); | |
5848 | #endif | |
5849 | #ifdef SIGILL | |
5850 | signal (SIGILL, SIG_DFL); | |
5851 | #endif | |
5852 | #ifdef SIGABRT | |
5853 | signal (SIGABRT, SIG_DFL); | |
5854 | #endif | |
5855 | #ifdef SIGBUS | |
5856 | signal (SIGBUS, SIG_DFL); | |
5857 | #endif | |
5858 | my_friendly_abort (0); | |
5859 | } | |
5860 | ||
8d08fdba MS |
5861 | /* Push the declarations of builtin types into the namespace. |
5862 | RID_INDEX, if < RID_MAX is the index of the builtin type | |
5863 | in the array RID_POINTERS. NAME is the name used when looking | |
5864 | up the builtin type. TYPE is the _TYPE node for the builtin type. */ | |
5865 | ||
5866 | static void | |
5867 | record_builtin_type (rid_index, name, type) | |
5868 | enum rid rid_index; | |
d8e178a0 | 5869 | const char *name; |
8d08fdba MS |
5870 | tree type; |
5871 | { | |
5872 | tree rname = NULL_TREE, tname = NULL_TREE; | |
a703fb38 | 5873 | tree tdecl = NULL_TREE; |
8d08fdba MS |
5874 | |
5875 | if ((int) rid_index < (int) RID_MAX) | |
5876 | rname = ridpointers[(int) rid_index]; | |
5877 | if (name) | |
5878 | tname = get_identifier (name); | |
5879 | ||
5880 | TYPE_BUILT_IN (type) = 1; | |
68642fb6 | 5881 | |
8d08fdba MS |
5882 | if (tname) |
5883 | { | |
8d08fdba | 5884 | tdecl = pushdecl (build_decl (TYPE_DECL, tname, type)); |
8d08fdba MS |
5885 | set_identifier_type_value (tname, NULL_TREE); |
5886 | if ((int) rid_index < (int) RID_MAX) | |
2c73f9f5 ML |
5887 | /* Built-in types live in the global namespace. */ |
5888 | SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl); | |
8d08fdba MS |
5889 | } |
5890 | if (rname != NULL_TREE) | |
5891 | { | |
5892 | if (tname != NULL_TREE) | |
5893 | { | |
5894 | set_identifier_type_value (rname, NULL_TREE); | |
2c73f9f5 | 5895 | SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl); |
8d08fdba MS |
5896 | } |
5897 | else | |
5898 | { | |
8d08fdba | 5899 | tdecl = pushdecl (build_decl (TYPE_DECL, rname, type)); |
8d08fdba MS |
5900 | set_identifier_type_value (rname, NULL_TREE); |
5901 | } | |
5902 | } | |
8d08fdba MS |
5903 | } |
5904 | ||
eff71ab0 PB |
5905 | /* Record one of the standard Java types. |
5906 | * Declare it as having the given NAME. | |
5907 | * If SIZE > 0, it is the size of one of the integral types; | |
5908 | * otherwise it is the negative of the size of one of the other types. */ | |
5909 | ||
5910 | static tree | |
5911 | record_builtin_java_type (name, size) | |
d8e178a0 | 5912 | const char *name; |
eff71ab0 PB |
5913 | int size; |
5914 | { | |
5915 | tree type, decl; | |
5916 | if (size > 0) | |
5917 | type = make_signed_type (size); | |
5918 | else if (size > -32) | |
5919 | { /* "__java_char" or ""__java_boolean". */ | |
5920 | type = make_unsigned_type (-size); | |
5921 | /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/ | |
5922 | } | |
5923 | else | |
5924 | { /* "__java_float" or ""__java_double". */ | |
5925 | type = make_node (REAL_TYPE); | |
5926 | TYPE_PRECISION (type) = - size; | |
5927 | layout_type (type); | |
5928 | } | |
5929 | record_builtin_type (RID_MAX, name, type); | |
5930 | decl = TYPE_NAME (type); | |
e229f2cd PB |
5931 | |
5932 | /* Suppress generate debug symbol entries for these types, | |
5933 | since for normal C++ they are just clutter. | |
5934 | However, push_lang_context undoes this if extern "Java" is seen. */ | |
eff71ab0 | 5935 | DECL_IGNORED_P (decl) = 1; |
e229f2cd | 5936 | |
eff71ab0 PB |
5937 | TYPE_FOR_JAVA (type) = 1; |
5938 | return type; | |
5939 | } | |
5940 | ||
036407f7 ML |
5941 | /* Push a type into the namespace so that the back-ends ignore it. */ |
5942 | ||
5943 | static void | |
5944 | record_unknown_type (type, name) | |
5945 | tree type; | |
d8e178a0 | 5946 | const char *name; |
036407f7 ML |
5947 | { |
5948 | tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type)); | |
5949 | /* Make sure the "unknown type" typedecl gets ignored for debug info. */ | |
5950 | DECL_IGNORED_P (decl) = 1; | |
5951 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; | |
5952 | TYPE_SIZE (type) = TYPE_SIZE (void_type_node); | |
5953 | TYPE_ALIGN (type) = 1; | |
5954 | TYPE_MODE (type) = TYPE_MODE (void_type_node); | |
68642fb6 | 5955 | } |
036407f7 | 5956 | |
8d08fdba MS |
5957 | /* Push overloaded decl, in global scope, with one argument so it |
5958 | can be used as a callback from define_function. */ | |
e92cc029 | 5959 | |
8d08fdba MS |
5960 | static void |
5961 | push_overloaded_decl_1 (x) | |
5962 | tree x; | |
5963 | { | |
f9c4f105 | 5964 | pushdecl (x); |
8d08fdba MS |
5965 | } |
5966 | ||
f9c4f105 | 5967 | inline tree |
c2a37c55 | 5968 | auto_function (name, type) |
8ccc31eb | 5969 | tree name, type; |
8ccc31eb MS |
5970 | { |
5971 | return define_function | |
c2a37c55 | 5972 | (IDENTIFIER_POINTER (name), type, push_overloaded_decl_1, |
8ccc31eb MS |
5973 | IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type), |
5974 | 0))); | |
5975 | } | |
5976 | ||
8d08fdba MS |
5977 | /* Create the predefined scalar types of C, |
5978 | and some nodes representing standard constants (0, 1, (void *)0). | |
5979 | Initialize the global binding level. | |
5980 | Make definitions for built-in primitive functions. */ | |
5981 | ||
5982 | void | |
5983 | init_decl_processing () | |
5984 | { | |
8d08fdba | 5985 | tree fields[20]; |
8d08fdba | 5986 | int wchar_type_size; |
8d08fdba MS |
5987 | tree array_domain_type; |
5988 | ||
5bb2a292 MM |
5989 | /* Check to see that the user did not specify an invalid combination |
5990 | of command-line options. */ | |
5991 | if (flag_new_abi && !flag_vtable_thunks) | |
5992 | fatal ("the new ABI requires vtable thunks"); | |
5993 | ||
8d08fdba MS |
5994 | /* Have to make these distinct before we try using them. */ |
5995 | lang_name_cplusplus = get_identifier ("C++"); | |
5996 | lang_name_c = get_identifier ("C"); | |
a1774733 | 5997 | lang_name_java = get_identifier ("Java"); |
8d08fdba | 5998 | |
99dccabc MM |
5999 | /* Let the back-end now how to save and restore language-specific |
6000 | per-function globals. */ | |
a8f73d4b MM |
6001 | init_lang_status = &push_cp_function_context; |
6002 | free_lang_status = &pop_cp_function_context; | |
b4b8bee7 | 6003 | mark_lang_status = &mark_cp_function_context; |
99dccabc | 6004 | |
fc6af6e3 RH |
6005 | cp_parse_init (); |
6006 | init_decl2 (); | |
9cd64686 | 6007 | init_pt (); |
fc6af6e3 | 6008 | |
9cd64686 MM |
6009 | /* Create the global variables. */ |
6010 | push_to_top_level (); | |
8012c983 | 6011 | |
2c73f9f5 | 6012 | /* Enter the global namespace. */ |
30394414 | 6013 | my_friendly_assert (global_namespace == NULL_TREE, 375); |
30394414 JM |
6014 | push_namespace (get_identifier ("::")); |
6015 | global_namespace = current_namespace; | |
6016 | current_lang_name = NULL_TREE; | |
6017 | ||
bccd95ae | 6018 | /* Adjust various flags based on command-line settings. */ |
e1cd6e56 | 6019 | if (flag_strict_prototype == 2) |
830fcda8 | 6020 | flag_strict_prototype = pedantic; |
2642b9bf JM |
6021 | if (! flag_permissive && ! pedantic) |
6022 | flag_pedantic_errors = 1; | |
bccd95ae MM |
6023 | if (!flag_no_inline) |
6024 | flag_inline_trees = 1; | |
830fcda8 JM |
6025 | |
6026 | strict_prototypes_lang_c = flag_strict_prototype; | |
8926095f | 6027 | |
8d08fdba MS |
6028 | /* Initially, C. */ |
6029 | current_lang_name = lang_name_c; | |
6030 | ||
6031 | current_function_decl = NULL_TREE; | |
8d08fdba MS |
6032 | current_binding_level = NULL_BINDING_LEVEL; |
6033 | free_binding_level = NULL_BINDING_LEVEL; | |
6034 | ||
6035 | /* Because most segmentation signals can be traced back into user | |
6036 | code, catch them and at least give the user a chance of working | |
e92cc029 | 6037 | around compiler bugs. */ |
8d08fdba MS |
6038 | signal (SIGSEGV, signal_catch); |
6039 | ||
6040 | /* We will also catch aborts in the back-end through signal_catch and | |
6041 | give the user a chance to see where the error might be, and to defeat | |
6042 | aborts in the back-end when there have been errors previously in their | |
e92cc029 | 6043 | code. */ |
8d08fdba MS |
6044 | #ifdef SIGIOT |
6045 | signal (SIGIOT, signal_catch); | |
6046 | #endif | |
6047 | #ifdef SIGILL | |
6048 | signal (SIGILL, signal_catch); | |
6049 | #endif | |
6050 | #ifdef SIGABRT | |
6051 | signal (SIGABRT, signal_catch); | |
6052 | #endif | |
6053 | #ifdef SIGBUS | |
6054 | signal (SIGBUS, signal_catch); | |
6055 | #endif | |
6056 | ||
81b3411c BS |
6057 | build_common_tree_nodes (flag_signed_char); |
6058 | ||
8d08fdba MS |
6059 | error_mark_list = build_tree_list (error_mark_node, error_mark_node); |
6060 | TREE_TYPE (error_mark_list) = error_mark_node; | |
6061 | ||
a28e3c7f MS |
6062 | /* Make the binding_level structure for global names. */ |
6063 | pushlevel (0); | |
8d08fdba | 6064 | global_binding_level = current_binding_level; |
2c73f9f5 ML |
6065 | /* The global level is the namespace level of ::. */ |
6066 | NAMESPACE_LEVEL (global_namespace) = global_binding_level; | |
6067 | declare_namespace_level (); | |
8d08fdba MS |
6068 | |
6069 | this_identifier = get_identifier (THIS_NAME); | |
6070 | in_charge_identifier = get_identifier (IN_CHARGE_NAME); | |
fc378698 MS |
6071 | ctor_identifier = get_identifier (CTOR_NAME); |
6072 | dtor_identifier = get_identifier (DTOR_NAME); | |
8d08fdba MS |
6073 | pfn_identifier = get_identifier (VTABLE_PFN_NAME); |
6074 | index_identifier = get_identifier (VTABLE_INDEX_NAME); | |
6075 | delta_identifier = get_identifier (VTABLE_DELTA_NAME); | |
6076 | delta2_identifier = get_identifier (VTABLE_DELTA2_NAME); | |
6077 | pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2"); | |
6078 | ||
6079 | /* Define `int' and `char' first so that dbx will output them first. */ | |
8d08fdba | 6080 | record_builtin_type (RID_INT, NULL_PTR, integer_type_node); |
8d08fdba MS |
6081 | record_builtin_type (RID_CHAR, "char", char_type_node); |
6082 | ||
45075bf3 NS |
6083 | /* `signed' is the same as `int' */ |
6084 | record_builtin_type (RID_SIGNED, NULL_PTR, integer_type_node); | |
8d08fdba | 6085 | record_builtin_type (RID_LONG, "long int", long_integer_type_node); |
8d08fdba | 6086 | record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node); |
8d08fdba MS |
6087 | record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node); |
6088 | record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node); | |
8d08fdba | 6089 | record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node); |
8d08fdba MS |
6090 | record_builtin_type (RID_MAX, "long long unsigned int", |
6091 | long_long_unsigned_type_node); | |
6092 | record_builtin_type (RID_MAX, "long long unsigned", | |
6093 | long_long_unsigned_type_node); | |
5156628f | 6094 | record_builtin_type (RID_SHORT, "short int", short_integer_type_node); |
5156628f MS |
6095 | record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node); |
6096 | record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node); | |
6097 | ||
8d08fdba MS |
6098 | ptrdiff_type_node |
6099 | = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE))); | |
6100 | ||
8d08fdba | 6101 | /* Define both `signed char' and `unsigned char'. */ |
8d08fdba | 6102 | record_builtin_type (RID_MAX, "signed char", signed_char_type_node); |
8d08fdba MS |
6103 | record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node); |
6104 | ||
81b3411c BS |
6105 | /* `unsigned long' is the standard type for sizeof. |
6106 | Note that stddef.h uses `unsigned long', | |
6107 | and this must agree, even if long and int are the same size. */ | |
6108 | set_sizetype | |
6109 | (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE)))); | |
6110 | ||
835f9b4d GRK |
6111 | /* Create the widest literal types. */ |
6112 | widest_integer_literal_type_node = make_signed_type (HOST_BITS_PER_WIDE_INT * 2); | |
68642fb6 | 6113 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, |
835f9b4d GRK |
6114 | widest_integer_literal_type_node)); |
6115 | ||
6116 | widest_unsigned_literal_type_node = make_unsigned_type (HOST_BITS_PER_WIDE_INT * 2); | |
68642fb6 | 6117 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, |
835f9b4d GRK |
6118 | widest_unsigned_literal_type_node)); |
6119 | ||
8d08fdba | 6120 | /* These are types that type_for_size and type_for_mode use. */ |
8d08fdba | 6121 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node)); |
8d08fdba | 6122 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node)); |
8d08fdba | 6123 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node)); |
8d08fdba | 6124 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node)); |
946dc1c8 | 6125 | #if HOST_BITS_PER_WIDE_INT >= 64 |
5ebcdddb | 6126 | pushdecl (build_decl (TYPE_DECL, get_identifier ("__int128_t"), intTI_type_node)); |
946dc1c8 | 6127 | #endif |
8d08fdba | 6128 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node)); |
8d08fdba | 6129 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node)); |
8d08fdba | 6130 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node)); |
8d08fdba | 6131 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node)); |
946dc1c8 | 6132 | #if HOST_BITS_PER_WIDE_INT >= 64 |
5ebcdddb | 6133 | pushdecl (build_decl (TYPE_DECL, get_identifier ("__uint128_t"), unsigned_intTI_type_node)); |
946dc1c8 | 6134 | #endif |
8d08fdba | 6135 | |
81b3411c | 6136 | build_common_tree_nodes_2 (flag_short_double); |
37c46b43 | 6137 | |
eff71ab0 PB |
6138 | java_byte_type_node = record_builtin_java_type ("__java_byte", 8); |
6139 | java_short_type_node = record_builtin_java_type ("__java_short", 16); | |
6140 | java_int_type_node = record_builtin_java_type ("__java_int", 32); | |
6141 | java_long_type_node = record_builtin_java_type ("__java_long", 64); | |
6142 | java_float_type_node = record_builtin_java_type ("__java_float", -32); | |
6143 | java_double_type_node = record_builtin_java_type ("__java_double", -64); | |
6144 | java_char_type_node = record_builtin_java_type ("__java_char", -16); | |
6145 | java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1); | |
6146 | ||
8d08fdba MS |
6147 | integer_two_node = build_int_2 (2, 0); |
6148 | TREE_TYPE (integer_two_node) = integer_type_node; | |
6149 | integer_three_node = build_int_2 (3, 0); | |
6150 | TREE_TYPE (integer_three_node) = integer_type_node; | |
8d08fdba | 6151 | |
255512c1 JM |
6152 | boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE); |
6153 | TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE); | |
c1ea6a0b BK |
6154 | TYPE_MAX_VALUE (boolean_type_node) = build_int_2 (1, 0); |
6155 | TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node)) = boolean_type_node; | |
6156 | TYPE_PRECISION (boolean_type_node) = 1; | |
255512c1 JM |
6157 | record_builtin_type (RID_BOOL, "bool", boolean_type_node); |
6158 | boolean_false_node = build_int_2 (0, 0); | |
6159 | TREE_TYPE (boolean_false_node) = boolean_type_node; | |
6160 | boolean_true_node = build_int_2 (1, 0); | |
6161 | TREE_TYPE (boolean_true_node) = boolean_type_node; | |
2986ae00 | 6162 | |
81b3411c BS |
6163 | signed_size_zero_node = build_int_2 (0, 0); record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node); |
6164 | record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node); | |
6165 | record_builtin_type (RID_MAX, "long double", long_double_type_node); | |
6166 | ||
6167 | pushdecl (build_decl (TYPE_DECL, get_identifier ("complex int"), | |
6168 | complex_integer_type_node)); | |
6169 | pushdecl (build_decl (TYPE_DECL, get_identifier ("complex float"), | |
6170 | complex_float_type_node)); | |
6171 | pushdecl (build_decl (TYPE_DECL, get_identifier ("complex double"), | |
6172 | complex_double_type_node)); | |
6173 | pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"), | |
6174 | complex_long_double_type_node)); | |
8d08fdba | 6175 | |
e92cc029 MS |
6176 | TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype)); |
6177 | ||
8d08fdba | 6178 | record_builtin_type (RID_VOID, NULL_PTR, void_type_node); |
8d08fdba MS |
6179 | void_list_node = build_tree_list (NULL_TREE, void_type_node); |
6180 | TREE_PARMLIST (void_list_node) = 1; | |
6181 | ||
8d08fdba MS |
6182 | /* Used for expressions that do nothing, but are not errors. */ |
6183 | void_zero_node = build_int_2 (0, 0); | |
6184 | TREE_TYPE (void_zero_node) = void_type_node; | |
6185 | ||
6186 | string_type_node = build_pointer_type (char_type_node); | |
beb53fb8 | 6187 | const_string_type_node |
68642fb6 | 6188 | = build_pointer_type (build_qualified_type (char_type_node, |
91063b51 | 6189 | TYPE_QUAL_CONST)); |
4cc1d462 | 6190 | empty_except_spec = build_tree_list (NULL_TREE, NULL_TREE); |
6b5fbb55 | 6191 | #if 0 |
8d08fdba | 6192 | record_builtin_type (RID_MAX, NULL_PTR, string_type_node); |
6b5fbb55 | 6193 | #endif |
8d08fdba MS |
6194 | |
6195 | /* Make a type to be the domain of a few array types | |
6196 | whose domains don't really matter. | |
6197 | 200 is small enough that it always fits in size_t | |
6198 | and large enough that it can hold most function names for the | |
6199 | initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */ | |
6200 | array_domain_type = build_index_type (build_int_2 (200, 0)); | |
6201 | ||
2c73f9f5 | 6202 | /* Make a type for arrays of characters. |
8d08fdba MS |
6203 | With luck nothing will ever really depend on the length of this |
6204 | array type. */ | |
6205 | char_array_type_node | |
6206 | = build_array_type (char_type_node, array_domain_type); | |
6207 | /* Likewise for arrays of ints. */ | |
6208 | int_array_type_node | |
6209 | = build_array_type (integer_type_node, array_domain_type); | |
6210 | ||
6211 | /* This is just some anonymous class type. Nobody should ever | |
6212 | need to look inside this envelope. */ | |
33848bb0 | 6213 | class_star_type_node = build_pointer_type (make_aggr_type (RECORD_TYPE)); |
8d08fdba | 6214 | |
7f4edbcb BS |
6215 | if (flag_huge_objects) |
6216 | delta_type_node = long_integer_type_node; | |
6217 | else | |
6218 | delta_type_node = short_integer_type_node; | |
6219 | ||
8d08fdba MS |
6220 | default_function_type |
6221 | = build_function_type (integer_type_node, NULL_TREE); | |
8d08fdba MS |
6222 | |
6223 | ptr_type_node = build_pointer_type (void_type_node); | |
beb53fb8 | 6224 | const_ptr_type_node |
91063b51 | 6225 | = build_pointer_type (build_qualified_type (void_type_node, |
7f4edbcb BS |
6226 | TYPE_QUAL_CONST)); |
6227 | c_common_nodes_and_builtins (1, flag_no_builtin, flag_no_nonansi_builtin); | |
356955cf | 6228 | lang_type_promotes_to = convert_type_from_ellipsis; |
7f4edbcb | 6229 | |
824b9a4c | 6230 | void_ftype_ptr |
4cc1d462 | 6231 | = build_exception_variant (void_ftype_ptr, empty_except_spec); |
8d08fdba | 6232 | |
8d08fdba MS |
6233 | /* C++ extensions */ |
6234 | ||
6235 | unknown_type_node = make_node (UNKNOWN_TYPE); | |
036407f7 ML |
6236 | record_unknown_type (unknown_type_node, "unknown type"); |
6237 | ||
8d08fdba MS |
6238 | /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */ |
6239 | TREE_TYPE (unknown_type_node) = unknown_type_node; | |
a6967cc0 | 6240 | |
03d0f4af | 6241 | TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0); |
a6967cc0 JM |
6242 | |
6243 | /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same | |
6244 | result. */ | |
8d08fdba MS |
6245 | TYPE_POINTER_TO (unknown_type_node) = unknown_type_node; |
6246 | TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node; | |
6247 | ||
e92cc029 | 6248 | /* This is special for C++ so functions can be overloaded. */ |
5096c664 JM |
6249 | wchar_type_node = get_identifier (flag_short_wchar |
6250 | ? "short unsigned int" | |
6251 | : WCHAR_TYPE); | |
6252 | wchar_type_node = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (wchar_type_node)); | |
8d08fdba MS |
6253 | wchar_type_size = TYPE_PRECISION (wchar_type_node); |
6254 | signed_wchar_type_node = make_signed_type (wchar_type_size); | |
6255 | unsigned_wchar_type_node = make_unsigned_type (wchar_type_size); | |
6256 | wchar_type_node | |
6257 | = TREE_UNSIGNED (wchar_type_node) | |
6258 | ? unsigned_wchar_type_node | |
6259 | : signed_wchar_type_node; | |
6260 | record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node); | |
6261 | ||
f376e137 MS |
6262 | /* Artificial declaration of wchar_t -- can be bashed */ |
6263 | wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"), | |
6264 | wchar_type_node); | |
6265 | pushdecl (wchar_decl_node); | |
6266 | ||
8d08fdba MS |
6267 | /* This is for wide string constants. */ |
6268 | wchar_array_type_node | |
6269 | = build_array_type (wchar_type_node, array_domain_type); | |
6270 | ||
8926095f | 6271 | if (flag_vtable_thunks) |
700f8a87 MS |
6272 | { |
6273 | /* Make sure we get a unique function type, so we can give | |
6274 | its pointer type a name. (This wins for gdb.) */ | |
6275 | tree vfunc_type = make_node (FUNCTION_TYPE); | |
6276 | TREE_TYPE (vfunc_type) = integer_type_node; | |
6277 | TYPE_ARG_TYPES (vfunc_type) = NULL_TREE; | |
6278 | layout_type (vfunc_type); | |
6279 | ||
6280 | vtable_entry_type = build_pointer_type (vfunc_type); | |
6281 | } | |
8926095f | 6282 | else |
700f8a87 | 6283 | { |
33848bb0 | 6284 | vtable_entry_type = make_aggr_type (RECORD_TYPE); |
4ce3d537 MM |
6285 | fields[0] = build_lang_decl (FIELD_DECL, delta_identifier, |
6286 | delta_type_node); | |
6287 | fields[1] = build_lang_decl (FIELD_DECL, index_identifier, | |
6288 | delta_type_node); | |
6289 | fields[2] = build_lang_decl (FIELD_DECL, pfn_identifier, | |
6290 | ptr_type_node); | |
700f8a87 MS |
6291 | finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2, |
6292 | double_type_node); | |
6293 | ||
6294 | /* Make this part of an invisible union. */ | |
6295 | fields[3] = copy_node (fields[2]); | |
6296 | TREE_TYPE (fields[3]) = delta_type_node; | |
6297 | DECL_NAME (fields[3]) = delta2_identifier; | |
6298 | DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node); | |
6299 | DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node); | |
6300 | TREE_UNSIGNED (fields[3]) = 0; | |
6301 | TREE_CHAIN (fields[2]) = fields[3]; | |
91063b51 MM |
6302 | vtable_entry_type = build_qualified_type (vtable_entry_type, |
6303 | TYPE_QUAL_CONST); | |
700f8a87 MS |
6304 | } |
6305 | record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type); | |
8d08fdba | 6306 | |
8d08fdba | 6307 | vtbl_type_node |
52bf7d5d | 6308 | = build_cplus_array_type (vtable_entry_type, NULL_TREE); |
8d08fdba | 6309 | layout_type (vtbl_type_node); |
91063b51 | 6310 | vtbl_type_node = build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST); |
8d08fdba | 6311 | record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node); |
849da744 MM |
6312 | vtbl_ptr_type_node = build_pointer_type (vtable_entry_type); |
6313 | layout_type (vtbl_ptr_type_node); | |
6314 | record_builtin_type (RID_MAX, NULL_PTR, vtbl_ptr_type_node); | |
8d08fdba | 6315 | |
68642fb6 | 6316 | std_node = build_decl (NAMESPACE_DECL, |
2c73f9f5 | 6317 | get_identifier (flag_honor_std ? "fake std":"std"), |
6633d636 MS |
6318 | void_type_node); |
6319 | pushdecl (std_node); | |
6320 | ||
2c73f9f5 | 6321 | global_type_node = make_node (LANG_TYPE); |
036407f7 | 6322 | record_unknown_type (global_type_node, "global type"); |
2c73f9f5 | 6323 | |
db5ae43f MS |
6324 | /* Now, C++. */ |
6325 | current_lang_name = lang_name_cplusplus; | |
8d08fdba | 6326 | |
ced78d8b | 6327 | { |
2c73f9f5 ML |
6328 | tree bad_alloc_type_node, newtype, deltype; |
6329 | if (flag_honor_std) | |
6330 | push_namespace (get_identifier ("std")); | |
6331 | bad_alloc_type_node = xref_tag | |
ca107ded | 6332 | (class_type_node, get_identifier ("bad_alloc"), 1); |
2c73f9f5 ML |
6333 | if (flag_honor_std) |
6334 | pop_namespace (); | |
6335 | newtype = build_exception_variant | |
4cc1d462 NS |
6336 | (ptr_ftype_sizetype, add_exception_specifier (NULL_TREE, bad_alloc_type_node, -1)); |
6337 | deltype = build_exception_variant (void_ftype_ptr, empty_except_spec); | |
c2a37c55 BS |
6338 | auto_function (ansi_opname[(int) NEW_EXPR], newtype); |
6339 | auto_function (ansi_opname[(int) VEC_NEW_EXPR], newtype); | |
6340 | global_delete_fndecl = auto_function (ansi_opname[(int) DELETE_EXPR], | |
6341 | deltype); | |
6342 | auto_function (ansi_opname[(int) VEC_DELETE_EXPR], deltype); | |
ced78d8b | 6343 | } |
8d08fdba MS |
6344 | |
6345 | abort_fndecl | |
c2a37c55 | 6346 | = define_function ("__pure_virtual", void_ftype, 0, 0); |
8d08fdba | 6347 | |
8d08fdba MS |
6348 | /* Perform other language dependent initializations. */ |
6349 | init_class_processing (); | |
6350 | init_init_processing (); | |
6351 | init_search_processing (); | |
db48b831 | 6352 | init_rtti_processing (); |
8d08fdba | 6353 | |
6467930b | 6354 | if (flag_exceptions) |
8d2733ca | 6355 | init_exception_processing (); |
8d08fdba MS |
6356 | if (flag_no_inline) |
6357 | { | |
6358 | flag_inline_functions = 0; | |
8d08fdba | 6359 | } |
9e9ff709 | 6360 | |
7fcdf4c2 | 6361 | if (! supports_one_only ()) |
72b7eeff | 6362 | flag_weak = 0; |
8d08fdba MS |
6363 | |
6364 | /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */ | |
6365 | declare_function_name (); | |
6366 | ||
6367 | /* Prepare to check format strings against argument lists. */ | |
6368 | init_function_format_info (); | |
e9a25f70 JL |
6369 | |
6370 | /* Show we use EH for cleanups. */ | |
6371 | using_eh_for_cleanups (); | |
62c154ed JM |
6372 | |
6373 | print_error_function = lang_print_error_function; | |
501ba25a | 6374 | lang_get_alias_set = &c_get_alias_set; |
e5dc5fb2 | 6375 | valid_lang_attribute = cp_valid_lang_attribute; |
d9cf7c82 JM |
6376 | |
6377 | /* Maintain consistency. Perhaps we should just complain if they | |
6378 | say -fwritable-strings? */ | |
6379 | if (flag_writable_strings) | |
6380 | flag_const_strings = 0; | |
fc6af6e3 RH |
6381 | |
6382 | /* Add GC roots for all of our global variables. */ | |
6383 | ggc_add_tree_root (c_global_trees, sizeof c_global_trees / sizeof(tree)); | |
6384 | ggc_add_tree_root (cp_global_trees, sizeof cp_global_trees / sizeof(tree)); | |
fc6af6e3 RH |
6385 | ggc_add_tree_root (&integer_three_node, 1); |
6386 | ggc_add_tree_root (&integer_two_node, 1); | |
fc6af6e3 | 6387 | ggc_add_tree_root (&signed_size_zero_node, 1); |
fc6af6e3 RH |
6388 | ggc_add_tree_root (&size_one_node, 1); |
6389 | ggc_add_tree_root (&size_zero_node, 1); | |
fc6af6e3 RH |
6390 | ggc_add_root (&global_binding_level, 1, sizeof global_binding_level, |
6391 | mark_binding_level); | |
9cd64686 | 6392 | ggc_add_root (&scope_chain, 1, sizeof scope_chain, &mark_saved_scope); |
fc6af6e3 RH |
6393 | ggc_add_tree_root (&static_ctors, 1); |
6394 | ggc_add_tree_root (&static_dtors, 1); | |
9cd64686 | 6395 | ggc_add_tree_root (&lastiddecl, 1); |
fc6af6e3 | 6396 | |
fc6af6e3 RH |
6397 | ggc_add_tree_root (&last_function_parm_tags, 1); |
6398 | ggc_add_tree_root (¤t_function_return_value, 1); | |
6399 | ggc_add_tree_root (¤t_function_parms, 1); | |
6400 | ggc_add_tree_root (¤t_function_parm_tags, 1); | |
9cd64686 | 6401 | ggc_add_tree_root (&last_function_parms, 1); |
fc6af6e3 | 6402 | ggc_add_tree_root (&error_mark_list, 1); |
9cd64686 | 6403 | |
fc6af6e3 | 6404 | ggc_add_tree_root (&global_namespace, 1); |
fc6af6e3 RH |
6405 | ggc_add_tree_root (&global_type_node, 1); |
6406 | ggc_add_tree_root (&anonymous_namespace_name, 1); | |
9cd64686 MM |
6407 | |
6408 | ggc_add_tree_root (&got_object, 1); | |
6409 | ggc_add_tree_root (&got_scope, 1); | |
6410 | ||
6411 | ggc_add_tree_root (¤t_lang_name, 1); | |
6412 | ggc_add_tree_root (&static_aggregates, 1); | |
62c154ed JM |
6413 | } |
6414 | ||
6415 | /* Function to print any language-specific context for an error message. */ | |
6416 | ||
6417 | static void | |
6418 | lang_print_error_function (file) | |
8df4696d | 6419 | const char *file; |
62c154ed JM |
6420 | { |
6421 | default_print_error_function (file); | |
6422 | maybe_print_template_context (); | |
8d08fdba MS |
6423 | } |
6424 | ||
6425 | /* Make a definition for a builtin function named NAME and whose data type | |
6426 | is TYPE. TYPE should be a function type with argument types. | |
8d08fdba MS |
6427 | |
6428 | If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME, | |
6429 | the name to be called if we can't opencode the function. */ | |
6430 | ||
6431 | tree | |
c2a37c55 | 6432 | define_function (name, type, pfn, library_name) |
d8e178a0 | 6433 | const char *name; |
8d08fdba | 6434 | tree type; |
158991b7 | 6435 | void (*pfn) PARAMS ((tree)); |
d8e178a0 | 6436 | const char *library_name; |
8d08fdba MS |
6437 | { |
6438 | tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type); | |
6439 | DECL_EXTERNAL (decl) = 1; | |
6440 | TREE_PUBLIC (decl) = 1; | |
863adfc0 | 6441 | DECL_ARTIFICIAL (decl) = 1; |
8d08fdba | 6442 | |
2c73f9f5 | 6443 | my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 392); |
cb0dbb9a | 6444 | DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace); |
2c73f9f5 | 6445 | |
8d08fdba MS |
6446 | /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME, |
6447 | we cannot change DECL_ASSEMBLER_NAME until we have installed this | |
6448 | function in the namespace. */ | |
6449 | if (pfn) (*pfn) (decl); | |
6450 | if (library_name) | |
6451 | DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name); | |
6452 | make_function_rtl (decl); | |
8d08fdba MS |
6453 | return decl; |
6454 | } | |
7f4edbcb | 6455 | |
c2a37c55 | 6456 | |
68642fb6 | 6457 | /* Wrapper around define_function, for the benefit of |
c2a37c55 BS |
6458 | c_common_nodes_and_builtins. |
6459 | FUNCTION_CODE tells later passes how to compile calls to this function. | |
6460 | See tree.h for its possible values. */ | |
6461 | ||
7f4edbcb | 6462 | tree |
26db82d8 | 6463 | builtin_function (name, type, code, class, libname) |
7f4edbcb BS |
6464 | const char *name; |
6465 | tree type; | |
26db82d8 BS |
6466 | int code; |
6467 | enum built_in_class class; | |
7f4edbcb BS |
6468 | const char *libname; |
6469 | { | |
158991b7 | 6470 | tree decl = define_function (name, type, (void (*) PARAMS ((tree)))pushdecl, |
c2a37c55 | 6471 | libname); |
26db82d8 BS |
6472 | DECL_BUILT_IN_CLASS (decl) = class; |
6473 | DECL_FUNCTION_CODE (decl) = code; | |
c2a37c55 | 6474 | return decl; |
7f4edbcb | 6475 | } |
8d08fdba | 6476 | \f |
61a127b3 MM |
6477 | /* When we call finish_struct for an anonymous union, we create |
6478 | default copy constructors and such. But, an anonymous union | |
6479 | shouldn't have such things; this function undoes the damage to the | |
6480 | anonymous union type T. | |
6481 | ||
6482 | (The reason that we create the synthesized methods is that we don't | |
6483 | distinguish `union { int i; }' from `typedef union { int i; } U'. | |
6484 | The first is an anonymous union; the second is just an ordinary | |
6485 | union type.) */ | |
6486 | ||
6487 | void | |
6bdb8141 | 6488 | fixup_anonymous_aggr (t) |
61a127b3 MM |
6489 | tree t; |
6490 | { | |
6491 | tree *q; | |
6492 | ||
6493 | /* Wipe out memory of synthesized methods */ | |
6494 | TYPE_HAS_CONSTRUCTOR (t) = 0; | |
6495 | TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0; | |
6496 | TYPE_HAS_INIT_REF (t) = 0; | |
6497 | TYPE_HAS_CONST_INIT_REF (t) = 0; | |
6498 | TYPE_HAS_ASSIGN_REF (t) = 0; | |
61a127b3 MM |
6499 | TYPE_HAS_CONST_ASSIGN_REF (t) = 0; |
6500 | ||
6501 | /* Splice the implicitly generated functions out of the TYPE_METHODS | |
6502 | list. */ | |
6503 | q = &TYPE_METHODS (t); | |
6504 | while (*q) | |
6505 | { | |
6506 | if (DECL_ARTIFICIAL (*q)) | |
6507 | *q = TREE_CHAIN (*q); | |
6508 | else | |
6509 | q = &TREE_CHAIN (*q); | |
6510 | } | |
6511 | ||
6512 | /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have | |
6513 | function members. */ | |
6514 | if (TYPE_METHODS (t)) | |
6515 | error ("an anonymous union cannot have function members"); | |
6516 | } | |
6517 | ||
72a93143 JM |
6518 | /* Make sure that a declaration with no declarator is well-formed, i.e. |
6519 | just defines a tagged type or anonymous union. | |
8d08fdba | 6520 | |
72a93143 | 6521 | Returns the type defined, if any. */ |
8d08fdba | 6522 | |
72a93143 JM |
6523 | tree |
6524 | check_tag_decl (declspecs) | |
8d08fdba MS |
6525 | tree declspecs; |
6526 | { | |
72a93143 | 6527 | int found_type = 0; |
2986ae00 | 6528 | tree ob_modifier = NULL_TREE; |
8d08fdba | 6529 | register tree link; |
8d08fdba MS |
6530 | register tree t = NULL_TREE; |
6531 | ||
6532 | for (link = declspecs; link; link = TREE_CHAIN (link)) | |
6533 | { | |
6534 | register tree value = TREE_VALUE (link); | |
6535 | ||
72a93143 | 6536 | if (TYPE_P (value)) |
8d08fdba | 6537 | { |
72a93143 | 6538 | ++found_type; |
5566b478 | 6539 | |
72a93143 JM |
6540 | if (IS_AGGR_TYPE (value) || TREE_CODE (value) == ENUMERAL_TYPE) |
6541 | { | |
6542 | my_friendly_assert (TYPE_MAIN_DECL (value) != NULL_TREE, 261); | |
6543 | t = value; | |
6544 | } | |
8d08fdba | 6545 | } |
83f660b7 JM |
6546 | else if (value == ridpointers[(int) RID_FRIEND]) |
6547 | { | |
83f660b7 JM |
6548 | if (current_class_type == NULL_TREE |
6549 | || current_scope () != current_class_type) | |
6550 | ob_modifier = value; | |
6551 | } | |
8d08fdba | 6552 | else if (value == ridpointers[(int) RID_STATIC] |
2986ae00 MS |
6553 | || value == ridpointers[(int) RID_EXTERN] |
6554 | || value == ridpointers[(int) RID_AUTO] | |
28cbf42c MS |
6555 | || value == ridpointers[(int) RID_REGISTER] |
6556 | || value == ridpointers[(int) RID_INLINE] | |
6557 | || value == ridpointers[(int) RID_VIRTUAL] | |
72a93143 JM |
6558 | || value == ridpointers[(int) RID_CONST] |
6559 | || value == ridpointers[(int) RID_VOLATILE] | |
28cbf42c | 6560 | || value == ridpointers[(int) RID_EXPLICIT]) |
2986ae00 | 6561 | ob_modifier = value; |
8d08fdba MS |
6562 | } |
6563 | ||
72a93143 JM |
6564 | if (found_type > 1) |
6565 | error ("multiple types in one declaration"); | |
7e2067ca JM |
6566 | |
6567 | /* Inside a class, we might be in a friend or access declaration. | |
6568 | Until we have a good way of detecting the latter, don't warn. */ | |
6569 | if (t == NULL_TREE && ! current_class_type) | |
6570 | pedwarn ("declaration does not declare anything"); | |
0dd3962d JM |
6571 | |
6572 | /* Check for an anonymous union. We're careful | |
6573 | accessing TYPE_IDENTIFIER because some built-in types, like | |
6574 | pointer-to-member types, do not have TYPE_NAME. */ | |
6bdb8141 | 6575 | else if (t && IS_AGGR_TYPE_CODE (TREE_CODE (t)) |
0dd3962d JM |
6576 | && TYPE_NAME (t) |
6577 | && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))) | |
6578 | { | |
6579 | /* Anonymous unions are objects, so they can have specifiers. */; | |
6bdb8141 JM |
6580 | SET_ANON_AGGR_TYPE_P (t); |
6581 | ||
6582 | if (TREE_CODE (t) != UNION_TYPE && pedantic && ! in_system_header) | |
6583 | pedwarn ("ISO C++ prohibits anonymous structs"); | |
0dd3962d JM |
6584 | } |
6585 | ||
83f660b7 | 6586 | else if (ob_modifier) |
8d08fdba | 6587 | { |
83f660b7 JM |
6588 | if (ob_modifier == ridpointers[(int) RID_INLINE] |
6589 | || ob_modifier == ridpointers[(int) RID_VIRTUAL]) | |
6590 | cp_error ("`%D' can only be specified for functions", ob_modifier); | |
6591 | else if (ob_modifier == ridpointers[(int) RID_FRIEND]) | |
6592 | cp_error ("`%D' can only be specified inside a class", ob_modifier); | |
6593 | else if (ob_modifier == ridpointers[(int) RID_EXPLICIT]) | |
6594 | cp_error ("`%D' can only be specified for constructors", | |
6595 | ob_modifier); | |
6596 | else | |
6597 | cp_error ("`%D' can only be specified for objects and functions", | |
6598 | ob_modifier); | |
72a93143 | 6599 | } |
8d08fdba | 6600 | |
72a93143 JM |
6601 | return t; |
6602 | } | |
6603 | ||
6604 | /* Called when a declaration is seen that contains no names to declare. | |
6605 | If its type is a reference to a structure, union or enum inherited | |
6606 | from a containing scope, shadow that tag name for the current scope | |
6607 | with a forward reference. | |
6608 | If its type defines a new named structure or union | |
6609 | or defines an enum, it is valid but we need not do anything here. | |
6610 | Otherwise, it is an error. | |
6611 | ||
6612 | C++: may have to grok the declspecs to learn about static, | |
6613 | complain for anonymous unions. */ | |
6614 | ||
6615 | void | |
6616 | shadow_tag (declspecs) | |
6617 | tree declspecs; | |
6618 | { | |
6619 | tree t = check_tag_decl (declspecs); | |
6620 | ||
6621 | if (t) | |
6622 | maybe_process_partial_specialization (t); | |
6623 | ||
6624 | /* This is where the variables in an anonymous union are | |
6625 | declared. An anonymous union declaration looks like: | |
6626 | union { ... } ; | |
6627 | because there is no declarator after the union, the parser | |
6628 | sends that declaration here. */ | |
6bdb8141 | 6629 | if (t && ANON_AGGR_TYPE_P (t)) |
72a93143 | 6630 | { |
6bdb8141 | 6631 | fixup_anonymous_aggr (t); |
72a93143 JM |
6632 | |
6633 | if (TYPE_FIELDS (t)) | |
6634 | { | |
6635 | tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0, | |
6636 | NULL_TREE); | |
6637 | finish_anon_union (decl); | |
6638 | } | |
8d08fdba MS |
6639 | } |
6640 | } | |
6641 | \f | |
6642 | /* Decode a "typename", such as "int **", returning a ..._TYPE node. */ | |
6643 | ||
6644 | tree | |
6645 | groktypename (typename) | |
6646 | tree typename; | |
6647 | { | |
6648 | if (TREE_CODE (typename) != TREE_LIST) | |
6649 | return typename; | |
6650 | return grokdeclarator (TREE_VALUE (typename), | |
6651 | TREE_PURPOSE (typename), | |
c11b6f21 | 6652 | TYPENAME, 0, NULL_TREE); |
8d08fdba MS |
6653 | } |
6654 | ||
6655 | /* Decode a declarator in an ordinary declaration or data definition. | |
6656 | This is called as soon as the type information and variable name | |
6657 | have been parsed, before parsing the initializer if any. | |
6658 | Here we create the ..._DECL node, fill in its type, | |
6659 | and put it on the list of decls for the current context. | |
6660 | The ..._DECL node is returned as the value. | |
6661 | ||
6662 | Exception: for arrays where the length is not specified, | |
82580166 | 6663 | the type is left null, to be filled in by `cp_finish_decl'. |
8d08fdba MS |
6664 | |
6665 | Function definitions do not come here; they go to start_function | |
6666 | instead. However, external and forward declarations of functions | |
6667 | do go through here. Structure field declarations are done by | |
6668 | grokfield and not through here. */ | |
6669 | ||
6670 | /* Set this to zero to debug not using the temporary obstack | |
6671 | to parse initializers. */ | |
6672 | int debug_temp_inits = 1; | |
6673 | ||
6674 | tree | |
a1774733 | 6675 | start_decl (declarator, declspecs, initialized, attributes, prefix_attributes) |
8d08fdba MS |
6676 | tree declarator, declspecs; |
6677 | int initialized; | |
a1774733 | 6678 | tree attributes, prefix_attributes; |
8d08fdba MS |
6679 | { |
6680 | register tree decl; | |
6681 | register tree type, tem; | |
6682 | tree context; | |
6683 | extern int have_extern_spec; | |
6684 | extern int used_extern_spec; | |
b17e2870 | 6685 | tree attrlist; |
8d08fdba | 6686 | |
5566b478 MS |
6687 | #if 0 |
6688 | /* See code below that used this. */ | |
8d08fdba | 6689 | int init_written = initialized; |
5566b478 | 6690 | #endif |
8d08fdba | 6691 | |
e92cc029 | 6692 | /* This should only be done once on the top most decl. */ |
8d08fdba MS |
6693 | if (have_extern_spec && !used_extern_spec) |
6694 | { | |
a28e3c7f MS |
6695 | declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), |
6696 | declspecs); | |
8d08fdba MS |
6697 | used_extern_spec = 1; |
6698 | } | |
6699 | ||
b17e2870 | 6700 | if (attributes || prefix_attributes) |
051e6fd7 | 6701 | attrlist = build_tree_list (attributes, prefix_attributes); |
b17e2870 JM |
6702 | else |
6703 | attrlist = NULL_TREE; | |
6704 | ||
c11b6f21 | 6705 | decl = grokdeclarator (declarator, declspecs, NORMAL, initialized, |
b17e2870 | 6706 | attrlist); |
68642fb6 | 6707 | |
a1774733 | 6708 | if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE) |
8d08fdba MS |
6709 | return NULL_TREE; |
6710 | ||
6711 | type = TREE_TYPE (decl); | |
6712 | ||
44689c12 ML |
6713 | if (type == error_mark_node) |
6714 | return NULL_TREE; | |
6715 | ||
8d08fdba MS |
6716 | context |
6717 | = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl)) | |
6718 | ? DECL_CLASS_CONTEXT (decl) | |
6719 | : DECL_CONTEXT (decl); | |
6720 | ||
9a68c51f JM |
6721 | if (initialized && context && TREE_CODE (context) == NAMESPACE_DECL |
6722 | && context != current_namespace && TREE_CODE (decl) == VAR_DECL) | |
6723 | { | |
6724 | /* When parsing the initializer, lookup should use the object's | |
6725 | namespace. */ | |
6726 | push_decl_namespace (context); | |
6727 | } | |
6728 | ||
2c73f9f5 ML |
6729 | /* We are only interested in class contexts, later. */ |
6730 | if (context && TREE_CODE (context) == NAMESPACE_DECL) | |
6731 | context = NULL_TREE; | |
6732 | ||
8d08fdba MS |
6733 | if (initialized) |
6734 | /* Is it valid for this decl to have an initializer at all? | |
6735 | If not, set INITIALIZED to zero, which will indirectly | |
82580166 | 6736 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ |
8d08fdba MS |
6737 | switch (TREE_CODE (decl)) |
6738 | { | |
6739 | case TYPE_DECL: | |
6740 | /* typedef foo = bar means give foo the same type as bar. | |
82580166 | 6741 | We haven't parsed bar yet, so `cp_finish_decl' will fix that up. |
8d08fdba MS |
6742 | Any other case of an initialization in a TYPE_DECL is an error. */ |
6743 | if (pedantic || list_length (declspecs) > 1) | |
6744 | { | |
8251199e | 6745 | cp_error ("typedef `%D' is initialized", decl); |
8d08fdba MS |
6746 | initialized = 0; |
6747 | } | |
6748 | break; | |
6749 | ||
6750 | case FUNCTION_DECL: | |
8251199e | 6751 | cp_error ("function `%#D' is initialized like a variable", decl); |
8d08fdba MS |
6752 | initialized = 0; |
6753 | break; | |
6754 | ||
6755 | default: | |
3e41d13b | 6756 | break; |
8d08fdba MS |
6757 | } |
6758 | ||
8d08fdba MS |
6759 | if (initialized) |
6760 | { | |
a9aedbc2 | 6761 | if (! toplevel_bindings_p () |
8d08fdba | 6762 | && DECL_EXTERNAL (decl)) |
8251199e | 6763 | cp_warning ("declaration of `%#D' has `extern' and is initialized", |
8d08fdba MS |
6764 | decl); |
6765 | DECL_EXTERNAL (decl) = 0; | |
5566b478 | 6766 | if (toplevel_bindings_p ()) |
8d08fdba MS |
6767 | TREE_STATIC (decl) = 1; |
6768 | ||
6769 | /* Tell `pushdecl' this is an initialized decl | |
6770 | even though we don't yet have the initializer expression. | |
82580166 | 6771 | Also tell `cp_finish_decl' it may store the real initializer. */ |
8d08fdba MS |
6772 | DECL_INITIAL (decl) = error_mark_node; |
6773 | } | |
6774 | ||
fa20888b MK |
6775 | #ifdef SET_DEFAULT_DECL_ATTRIBUTES |
6776 | SET_DEFAULT_DECL_ATTRIBUTES (decl, attributes); | |
6777 | #endif | |
68642fb6 | 6778 | |
fa20888b MK |
6779 | /* Set attributes here so if duplicate decl, will have proper attributes. */ |
6780 | cplus_decl_attributes (decl, attributes, prefix_attributes); | |
6781 | ||
5566b478 | 6782 | if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE) |
5b605f68 | 6783 | { |
6b400b21 | 6784 | push_nested_class (context, 2); |
e97e5263 | 6785 | |
5b605f68 MS |
6786 | if (TREE_CODE (decl) == VAR_DECL) |
6787 | { | |
6788 | tree field = lookup_field (context, DECL_NAME (decl), 0, 0); | |
6789 | if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL) | |
8251199e | 6790 | cp_error ("`%#D' is not a static member of `%#T'", decl, context); |
e349ee73 MS |
6791 | else |
6792 | { | |
6793 | if (DECL_CONTEXT (field) != context) | |
f2d773a2 | 6794 | { |
8251199e | 6795 | cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'", |
f2d773a2 JM |
6796 | DECL_CONTEXT (field), DECL_NAME (decl), |
6797 | context, DECL_NAME (decl)); | |
6798 | DECL_CONTEXT (decl) = DECL_CONTEXT (field); | |
6799 | } | |
75650646 MM |
6800 | /* Static data member are tricky; an in-class initialization |
6801 | still doesn't provide a definition, so the in-class | |
6802 | declaration will have DECL_EXTERNAL set, but will have an | |
6803 | initialization. Thus, duplicate_decls won't warn | |
6804 | about this situation, and so we check here. */ | |
6805 | if (DECL_INITIAL (decl) && DECL_INITIAL (field)) | |
8251199e | 6806 | cp_error ("duplicate initialization of %D", decl); |
e349ee73 MS |
6807 | if (duplicate_decls (decl, field)) |
6808 | decl = field; | |
6809 | } | |
5b605f68 | 6810 | } |
f30432d7 MS |
6811 | else |
6812 | { | |
5566b478 | 6813 | tree field = check_classfn (context, decl); |
f30432d7 MS |
6814 | if (field && duplicate_decls (decl, field)) |
6815 | decl = field; | |
6816 | } | |
6817 | ||
6818 | /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */ | |
dff3e828 | 6819 | DECL_IN_AGGR_P (decl) = 0; |
68642fb6 | 6820 | if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl)) |
dff3e828 | 6821 | || CLASSTYPE_USE_TEMPLATE (context)) |
84e6233f JM |
6822 | { |
6823 | SET_DECL_TEMPLATE_SPECIALIZATION (decl); | |
6824 | /* [temp.expl.spec] An explicit specialization of a static data | |
6825 | member of a template is a definition if the declaration | |
6826 | includes an initializer; otherwise, it is a declaration. | |
6827 | ||
6828 | We check for processing_specialization so this only applies | |
6829 | to the new specialization syntax. */ | |
6830 | if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization) | |
6831 | DECL_EXTERNAL (decl) = 1; | |
6832 | } | |
f30432d7 | 6833 | |
b7698cf0 | 6834 | if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl)) |
8251199e | 6835 | cp_pedwarn ("declaration of `%#D' outside of class is not definition", |
f30432d7 | 6836 | decl); |
5b605f68 MS |
6837 | } |
6838 | ||
9188c363 MM |
6839 | /* Enter this declaration into the symbol table. */ |
6840 | tem = maybe_push_decl (decl); | |
2ee887f2 | 6841 | |
5156628f | 6842 | if (processing_template_decl) |
cd9f6678 | 6843 | tem = push_template_decl (tem); |
5566b478 | 6844 | |
2ee887f2 | 6845 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a3203465 | 6846 | /* Tell the back-end to use or not use .common as appropriate. If we say |
a50f0918 MS |
6847 | -fconserve-space, we want this to save .data space, at the expense of |
6848 | wrong semantics. If we say -fno-conserve-space, we want this to | |
6849 | produce errors about redefs; to do this we force variables into the | |
6850 | data segment. */ | |
a3203465 | 6851 | DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem); |
2ee887f2 | 6852 | #endif |
68642fb6 | 6853 | |
5156628f | 6854 | if (! processing_template_decl) |
5566b478 | 6855 | start_decl_1 (tem); |
8d08fdba | 6856 | |
8d08fdba MS |
6857 | return tem; |
6858 | } | |
6859 | ||
5566b478 MS |
6860 | void |
6861 | start_decl_1 (decl) | |
6862 | tree decl; | |
8d08fdba | 6863 | { |
5566b478 MS |
6864 | tree type = TREE_TYPE (decl); |
6865 | int initialized = (DECL_INITIAL (decl) != NULL_TREE); | |
8d08fdba | 6866 | |
44689c12 ML |
6867 | if (type == error_mark_node) |
6868 | return; | |
6869 | ||
8f471b0d MM |
6870 | /* If this type of object needs a cleanup, but we're not allowed to |
6871 | add any more objects with cleanups to the current scope, create a | |
6872 | new binding level. */ | |
5566b478 MS |
6873 | if (TYPE_NEEDS_DESTRUCTOR (type) |
6874 | && current_binding_level->more_cleanups_ok == 0) | |
8f471b0d MM |
6875 | { |
6876 | keep_next_level (2); | |
6877 | pushlevel (1); | |
6878 | clear_last_expr (); | |
6879 | add_scope_stmt (/*begin_p=*/1, /*partial_p=*/1); | |
6880 | } | |
5566b478 MS |
6881 | |
6882 | if (initialized) | |
6883 | /* Is it valid for this decl to have an initializer at all? | |
6884 | If not, set INITIALIZED to zero, which will indirectly | |
6885 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ | |
8d08fdba | 6886 | { |
5566b478 MS |
6887 | /* Don't allow initializations for incomplete types except for |
6888 | arrays which might be completed by the initialization. */ | |
44689c12 | 6889 | if (TYPE_SIZE (complete_type (type)) != NULL_TREE) |
5566b478 MS |
6890 | ; /* A complete type is ok. */ |
6891 | else if (TREE_CODE (type) != ARRAY_TYPE) | |
8d08fdba | 6892 | { |
8251199e | 6893 | cp_error ("variable `%#D' has initializer but incomplete type", |
5566b478 MS |
6894 | decl); |
6895 | initialized = 0; | |
25eb19ff | 6896 | type = TREE_TYPE (decl) = error_mark_node; |
5566b478 MS |
6897 | } |
6898 | else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE) | |
6899 | { | |
6900 | if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)) | |
8251199e | 6901 | cp_error ("elements of array `%#D' have incomplete type", decl); |
5566b478 MS |
6902 | /* else we already gave an error in start_decl. */ |
6903 | initialized = 0; | |
8d08fdba | 6904 | } |
8d08fdba MS |
6905 | } |
6906 | ||
5566b478 MS |
6907 | if (!initialized |
6908 | && TREE_CODE (decl) != TYPE_DECL | |
6909 | && TREE_CODE (decl) != TEMPLATE_DECL | |
07c88314 MM |
6910 | && type != error_mark_node |
6911 | && IS_AGGR_TYPE (type) | |
6912 | && ! DECL_EXTERNAL (decl)) | |
8d08fdba | 6913 | { |
5156628f | 6914 | if ((! processing_template_decl || ! uses_template_parms (type)) |
7fcdf4c2 | 6915 | && TYPE_SIZE (complete_type (type)) == NULL_TREE) |
5566b478 | 6916 | { |
8251199e | 6917 | cp_error ("aggregate `%#D' has incomplete type and cannot be initialized", |
5566b478 MS |
6918 | decl); |
6919 | /* Change the type so that assemble_variable will give | |
6920 | DECL an rtl we can live with: (mem (const_int 0)). */ | |
25eb19ff | 6921 | type = TREE_TYPE (decl) = error_mark_node; |
5566b478 MS |
6922 | } |
6923 | else | |
6924 | { | |
6925 | /* If any base type in the hierarchy of TYPE needs a constructor, | |
6926 | then we set initialized to 1. This way any nodes which are | |
6927 | created for the purposes of initializing this aggregate | |
6928 | will live as long as it does. This is necessary for global | |
6929 | aggregates which do not have their initializers processed until | |
6930 | the end of the file. */ | |
6931 | initialized = TYPE_NEEDS_CONSTRUCTING (type); | |
6932 | } | |
6933 | } | |
6934 | ||
5566b478 MS |
6935 | if (! initialized) |
6936 | DECL_INITIAL (decl) = NULL_TREE; | |
6937 | } | |
6938 | ||
6939 | /* Handle initialization of references. | |
38e01259 | 6940 | These three arguments are from `cp_finish_decl', and have the |
e92cc029 MS |
6941 | same meaning here that they do there. |
6942 | ||
6943 | Quotes on semantics can be found in ARM 8.4.3. */ | |
6944 | ||
5566b478 | 6945 | static void |
a703fb38 | 6946 | grok_reference_init (decl, type, init) |
5566b478 | 6947 | tree decl, type, init; |
5566b478 MS |
6948 | { |
6949 | tree tmp; | |
6950 | ||
6951 | if (init == NULL_TREE) | |
6952 | { | |
6953 | if ((DECL_LANG_SPECIFIC (decl) == 0 | |
6954 | || DECL_IN_AGGR_P (decl) == 0) | |
6955 | && ! DECL_THIS_EXTERN (decl)) | |
ed5511d9 | 6956 | cp_error ("`%D' declared as reference but not initialized", decl); |
5566b478 MS |
6957 | return; |
6958 | } | |
6959 | ||
6960 | if (init == error_mark_node) | |
6961 | return; | |
6962 | ||
ed5511d9 | 6963 | if (TREE_CODE (init) == CONSTRUCTOR) |
5566b478 | 6964 | { |
8251199e | 6965 | cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl); |
8d08fdba MS |
6966 | return; |
6967 | } | |
6968 | ||
6969 | if (TREE_CODE (init) == TREE_LIST) | |
6970 | init = build_compound_expr (init); | |
8d08fdba | 6971 | |
8ccc31eb MS |
6972 | if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE) |
6973 | init = convert_from_reference (init); | |
6974 | ||
8d08fdba MS |
6975 | if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE |
6976 | && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE) | |
6977 | { | |
a3203465 | 6978 | /* Note: default conversion is only called in very special cases. */ |
8d08fdba MS |
6979 | init = default_conversion (init); |
6980 | } | |
68642fb6 | 6981 | |
24bef158 MM |
6982 | /* Convert INIT to the reference type TYPE. This may involve the |
6983 | creation of a temporary, whose lifetime must be the same as that | |
6984 | of the reference. If so, a DECL_STMT for the temporary will be | |
6985 | added just after the DECL_STMT for DECL. That's why we don't set | |
6986 | DECL_INITIAL for local references (instead assigning to them | |
6987 | explicitly); we need to allow the temporary to be initialized | |
6988 | first. */ | |
a3203465 | 6989 | tmp = convert_to_reference |
9a3b49ac MS |
6990 | (type, init, CONV_IMPLICIT, |
6991 | LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, decl); | |
8d08fdba | 6992 | |
a3203465 | 6993 | if (tmp == error_mark_node) |
ed5511d9 | 6994 | return; |
a3203465 | 6995 | else if (tmp != NULL_TREE) |
8d08fdba | 6996 | { |
a3203465 | 6997 | init = tmp; |
24bef158 MM |
6998 | tmp = save_expr (tmp); |
6999 | if (building_stmt_tree ()) | |
7000 | { | |
7001 | /* Initialize the declaration. */ | |
7002 | tmp = build (INIT_EXPR, TREE_TYPE (decl), decl, tmp); | |
24bef158 MM |
7003 | finish_expr_stmt (tmp); |
7004 | } | |
7005 | else | |
7006 | DECL_INITIAL (decl) = tmp; | |
8d08fdba | 7007 | } |
a3203465 | 7008 | else |
8d08fdba | 7009 | { |
8251199e | 7010 | cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init)); |
ed5511d9 | 7011 | return; |
8d08fdba | 7012 | } |
8d08fdba | 7013 | |
8d08fdba MS |
7014 | if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl))) |
7015 | { | |
7016 | expand_static_init (decl, DECL_INITIAL (decl)); | |
7017 | DECL_INITIAL (decl) = NULL_TREE; | |
7018 | } | |
7019 | return; | |
8d08fdba MS |
7020 | } |
7021 | ||
6060a796 MS |
7022 | /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from |
7023 | mucking with forces it does not comprehend (i.e. initialization with a | |
7024 | constructor). If we are at global scope and won't go into COMMON, fill | |
7025 | it in with a dummy CONSTRUCTOR to force the variable into .data; | |
7026 | otherwise we can use error_mark_node. */ | |
7027 | ||
28cbf42c MS |
7028 | static tree |
7029 | obscure_complex_init (decl, init) | |
7030 | tree decl, init; | |
6060a796 | 7031 | { |
28cbf42c MS |
7032 | if (! flag_no_inline && TREE_STATIC (decl)) |
7033 | { | |
7034 | if (extract_init (decl, init)) | |
7035 | return NULL_TREE; | |
7036 | } | |
7037 | ||
2ee887f2 | 7038 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a9aedbc2 | 7039 | if (toplevel_bindings_p () && ! DECL_COMMON (decl)) |
6060a796 MS |
7040 | DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE, |
7041 | NULL_TREE); | |
7042 | else | |
2ee887f2 | 7043 | #endif |
6060a796 | 7044 | DECL_INITIAL (decl) = error_mark_node; |
28cbf42c MS |
7045 | |
7046 | return init; | |
6060a796 MS |
7047 | } |
7048 | ||
27778b73 MM |
7049 | /* When parsing `int a[] = {1, 2};' we don't know the size of the |
7050 | array until we finish parsing the initializer. If that's the | |
7051 | situation we're in, update DECL accordingly. */ | |
7052 | ||
7053 | static void | |
7054 | maybe_deduce_size_from_array_init (decl, init) | |
7055 | tree decl; | |
7056 | tree init; | |
7057 | { | |
7058 | tree type = TREE_TYPE (decl); | |
7059 | ||
7060 | if (TREE_CODE (type) == ARRAY_TYPE | |
7061 | && TYPE_DOMAIN (type) == NULL_TREE | |
7062 | && TREE_CODE (decl) != TYPE_DECL) | |
7063 | { | |
7064 | int do_default | |
7065 | = (TREE_STATIC (decl) | |
7066 | /* Even if pedantic, an external linkage array | |
7067 | may have incomplete type at first. */ | |
7068 | ? pedantic && ! DECL_EXTERNAL (decl) | |
7069 | : !DECL_EXTERNAL (decl)); | |
7070 | tree initializer = init ? init : DECL_INITIAL (decl); | |
7071 | int failure = complete_array_type (type, initializer, do_default); | |
7072 | ||
7073 | if (failure == 1) | |
7074 | cp_error ("initializer fails to determine size of `%D'", decl); | |
7075 | ||
7076 | if (failure == 2) | |
7077 | { | |
7078 | if (do_default) | |
7079 | cp_error ("array size missing in `%D'", decl); | |
7080 | /* If a `static' var's size isn't known, make it extern as | |
7081 | well as static, so it does not get allocated. If it's not | |
7082 | `static', then don't mark it extern; finish_incomplete_decl | |
7083 | will give it a default size and it will get allocated. */ | |
7084 | else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl)) | |
7085 | DECL_EXTERNAL (decl) = 1; | |
7086 | } | |
7087 | ||
7088 | if (pedantic && TYPE_DOMAIN (type) != NULL_TREE | |
7089 | && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), | |
7090 | integer_zero_node)) | |
7091 | cp_error ("zero-size array `%D'", decl); | |
7092 | ||
7093 | layout_decl (decl, 0); | |
7094 | } | |
7095 | } | |
7096 | ||
7097 | /* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue | |
57b52417 | 7098 | any appropriate error messages regarding the layout. */ |
27778b73 | 7099 | |
57b52417 MM |
7100 | static void |
7101 | layout_var_decl (decl) | |
27778b73 | 7102 | tree decl; |
27778b73 | 7103 | { |
57b52417 | 7104 | tree type = TREE_TYPE (decl); |
c95cd22e | 7105 | #if 0 |
57b52417 | 7106 | tree ttype = target_type (type); |
c95cd22e | 7107 | #endif |
57b52417 MM |
7108 | |
7109 | /* If we haven't already layed out this declaration, do so now. | |
7110 | Note that we must not call complete type for an external object | |
7111 | because it's type might involve templates that we are not | |
68642fb6 | 7112 | supposed to isntantiate yet. (And it's perfectly legal to say |
57b52417 MM |
7113 | `extern X x' for some incomplete type `X'.) */ |
7114 | if (!DECL_EXTERNAL (decl)) | |
7115 | complete_type (type); | |
7116 | if (!DECL_SIZE (decl)&& TYPE_SIZE (type)) | |
27778b73 MM |
7117 | layout_decl (decl, 0); |
7118 | ||
c82dbd95 | 7119 | if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE) |
27778b73 MM |
7120 | { |
7121 | /* An automatic variable with an incomplete type: that is an error. | |
7122 | Don't talk about array types here, since we took care of that | |
7123 | message in grokdeclarator. */ | |
7124 | cp_error ("storage size of `%D' isn't known", decl); | |
7125 | TREE_TYPE (decl) = error_mark_node; | |
7126 | } | |
ae673f14 JM |
7127 | #if 0 |
7128 | /* Keep this code around in case we later want to control debug info | |
7129 | based on whether a type is "used". (jason 1999-11-11) */ | |
7130 | ||
27778b73 MM |
7131 | else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype)) |
7132 | /* Let debugger know it should output info for this type. */ | |
7133 | note_debug_info_needed (ttype); | |
7134 | ||
7135 | if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl)) | |
7136 | note_debug_info_needed (DECL_CONTEXT (decl)); | |
ae673f14 | 7137 | #endif |
27778b73 MM |
7138 | |
7139 | if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl)) | |
7140 | && DECL_SIZE (decl) != NULL_TREE | |
7141 | && ! TREE_CONSTANT (DECL_SIZE (decl))) | |
7142 | { | |
7143 | if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST) | |
7144 | constant_expression_warning (DECL_SIZE (decl)); | |
7145 | else | |
7146 | cp_error ("storage size of `%D' isn't constant", decl); | |
7147 | } | |
7148 | } | |
7149 | ||
27778b73 MM |
7150 | /* If a local static variable is declared in an inline function, or if |
7151 | we have a weak definition, we must endeavor to create only one | |
7152 | instance of the variable at link-time. */ | |
7153 | ||
7154 | static void | |
7155 | maybe_commonize_var (decl) | |
7156 | tree decl; | |
7157 | { | |
7158 | /* Static data in a function with comdat linkage also has comdat | |
7159 | linkage. */ | |
7160 | if (TREE_STATIC (decl) | |
7161 | /* Don't mess with __FUNCTION__. */ | |
7162 | && ! TREE_ASM_WRITTEN (decl) | |
7163 | && current_function_decl | |
7164 | && DECL_CONTEXT (decl) == current_function_decl | |
7165 | && (DECL_THIS_INLINE (current_function_decl) | |
7166 | || DECL_TEMPLATE_INSTANTIATION (current_function_decl)) | |
7167 | && TREE_PUBLIC (current_function_decl)) | |
7168 | { | |
7169 | /* Rather than try to get this right with inlining, we suppress | |
7170 | inlining of such functions. */ | |
7171 | current_function_cannot_inline | |
7172 | = "function with static variable cannot be inline"; | |
7173 | ||
7174 | /* If flag_weak, we don't need to mess with this, as we can just | |
7175 | make the function weak, and let it refer to its unique local | |
7176 | copy. This works because we don't allow the function to be | |
7177 | inlined. */ | |
7178 | if (! flag_weak) | |
7179 | { | |
7180 | if (DECL_INTERFACE_KNOWN (current_function_decl)) | |
7181 | { | |
7182 | TREE_PUBLIC (decl) = 1; | |
7183 | DECL_EXTERNAL (decl) = DECL_EXTERNAL (current_function_decl); | |
7184 | } | |
7185 | else if (DECL_INITIAL (decl) == NULL_TREE | |
7186 | || DECL_INITIAL (decl) == error_mark_node) | |
7187 | { | |
7188 | TREE_PUBLIC (decl) = 1; | |
7189 | DECL_COMMON (decl) = 1; | |
7190 | } | |
7191 | /* else we lose. We can only do this if we can use common, | |
7192 | which we can't if it has been initialized. */ | |
7193 | ||
7194 | if (TREE_PUBLIC (decl)) | |
7195 | DECL_ASSEMBLER_NAME (decl) | |
7196 | = build_static_name (current_function_decl, DECL_NAME (decl)); | |
7197 | else if (! DECL_ARTIFICIAL (decl)) | |
7198 | { | |
7199 | cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl); | |
7200 | cp_warning_at (" you can work around this by removing the initializer", decl); | |
7201 | } | |
7202 | } | |
7203 | } | |
7204 | else if (DECL_LANG_SPECIFIC (decl) && DECL_COMDAT (decl)) | |
7205 | /* Set it up again; we might have set DECL_INITIAL since the last | |
7206 | time. */ | |
7207 | comdat_linkage (decl); | |
7208 | } | |
7209 | ||
91063b51 MM |
7210 | /* Issue an error message if DECL is an uninitialized const variable. */ |
7211 | ||
7212 | static void | |
7213 | check_for_uninitialized_const_var (decl) | |
7214 | tree decl; | |
7215 | { | |
7216 | tree type = TREE_TYPE (decl); | |
7217 | ||
7218 | /* ``Unless explicitly declared extern, a const object does not have | |
7219 | external linkage and must be initialized. ($8.4; $12.1)'' ARM | |
7220 | 7.1.6 */ | |
7221 | if (TREE_CODE (decl) == VAR_DECL | |
7222 | && TREE_CODE (type) != REFERENCE_TYPE | |
7223 | && CP_TYPE_CONST_P (type) | |
7224 | && !TYPE_NEEDS_CONSTRUCTING (type) | |
7225 | && !DECL_INITIAL (decl)) | |
7226 | cp_error ("uninitialized const `%D'", decl); | |
7227 | } | |
7228 | ||
c82dbd95 MM |
7229 | /* Verify INIT (the initializer for DECL), and record the |
7230 | initialization in DECL_INITIAL, if appropriate. Returns a new | |
7231 | value for INIT. */ | |
27778b73 | 7232 | |
c82dbd95 MM |
7233 | static tree |
7234 | check_initializer (decl, init) | |
27778b73 | 7235 | tree decl; |
c82dbd95 | 7236 | tree init; |
27778b73 | 7237 | { |
27778b73 MM |
7238 | tree type; |
7239 | ||
7240 | if (TREE_CODE (decl) == FIELD_DECL) | |
c82dbd95 | 7241 | return init; |
27778b73 | 7242 | |
fc0e7bf5 MM |
7243 | type = TREE_TYPE (decl); |
7244 | ||
27778b73 MM |
7245 | /* If `start_decl' didn't like having an initialization, ignore it now. */ |
7246 | if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE) | |
7247 | init = NULL_TREE; | |
27778b73 | 7248 | |
c82dbd95 | 7249 | /* Check the initializer. */ |
27778b73 MM |
7250 | if (init) |
7251 | { | |
c82dbd95 MM |
7252 | /* Things that are going to be initialized need to have complete |
7253 | type. */ | |
7254 | TREE_TYPE (decl) = type = complete_type (TREE_TYPE (decl)); | |
7255 | ||
7256 | if (type == error_mark_node) | |
7257 | /* We will have already complained. */ | |
7258 | init = NULL_TREE; | |
7259 | else if (TYPE_SIZE (type) && !TREE_CONSTANT (TYPE_SIZE (type))) | |
27778b73 MM |
7260 | { |
7261 | cp_error ("variable-sized object `%D' may not be initialized", decl); | |
7262 | init = NULL_TREE; | |
7263 | } | |
c82dbd95 MM |
7264 | else if (TREE_CODE (type) == ARRAY_TYPE |
7265 | && !TYPE_SIZE (TREE_TYPE (type))) | |
27778b73 MM |
7266 | { |
7267 | cp_error ("elements of array `%#D' have incomplete type", decl); | |
7268 | init = NULL_TREE; | |
7269 | } | |
c82dbd95 MM |
7270 | else if (!TYPE_SIZE (type)) |
7271 | { | |
7272 | cp_error ("`%D' has incomplete type", decl); | |
7273 | TREE_TYPE (decl) = error_mark_node; | |
7274 | init = NULL_TREE; | |
7275 | } | |
27778b73 MM |
7276 | } |
7277 | ||
7278 | if (TREE_CODE (decl) == CONST_DECL) | |
7279 | { | |
7280 | my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148); | |
7281 | ||
7282 | DECL_INITIAL (decl) = init; | |
7283 | ||
7284 | /* This will keep us from needing to worry about our obstacks. */ | |
7285 | my_friendly_assert (init != NULL_TREE, 149); | |
7286 | init = NULL_TREE; | |
7287 | } | |
c82dbd95 MM |
7288 | else if (!DECL_EXTERNAL (decl) && TREE_CODE (type) == REFERENCE_TYPE) |
7289 | { | |
7290 | if (TREE_STATIC (decl)) | |
7291 | make_decl_rtl (decl, NULL_PTR, toplevel_bindings_p ()); | |
7292 | grok_reference_init (decl, type, init); | |
7293 | init = NULL_TREE; | |
7294 | } | |
27778b73 MM |
7295 | else if (init) |
7296 | { | |
7297 | if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type)) | |
7298 | { | |
7299 | if (TREE_CODE (type) == ARRAY_TYPE) | |
7300 | init = digest_init (type, init, (tree *) 0); | |
7301 | else if (TREE_CODE (init) == CONSTRUCTOR | |
7302 | && TREE_HAS_CONSTRUCTOR (init)) | |
7303 | { | |
7304 | if (TYPE_NON_AGGREGATE_CLASS (type)) | |
7305 | { | |
7306 | cp_error ("`%D' must be initialized by constructor, not by `{...}'", | |
7307 | decl); | |
7308 | init = error_mark_node; | |
7309 | } | |
7310 | else | |
7311 | goto dont_use_constructor; | |
7312 | } | |
7313 | } | |
7314 | else | |
7315 | { | |
7316 | dont_use_constructor: | |
7317 | if (TREE_CODE (init) != TREE_VEC) | |
7318 | init = store_init_value (decl, init); | |
7319 | } | |
7320 | ||
7321 | if (init) | |
7322 | /* We must hide the initializer so that expand_decl | |
7323 | won't try to do something it does not understand. */ | |
7324 | init = obscure_complex_init (decl, init); | |
7325 | } | |
7326 | else if (DECL_EXTERNAL (decl)) | |
7327 | ; | |
7328 | else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't' | |
7329 | && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type))) | |
7330 | { | |
7331 | tree core_type = strip_array_types (type); | |
7332 | ||
7333 | if (! TYPE_NEEDS_CONSTRUCTING (core_type)) | |
7334 | { | |
7335 | if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type)) | |
7336 | cp_error ("structure `%D' with uninitialized const members", decl); | |
7337 | if (CLASSTYPE_REF_FIELDS_NEED_INIT (core_type)) | |
7338 | cp_error ("structure `%D' with uninitialized reference members", | |
7339 | decl); | |
7340 | } | |
7341 | ||
7342 | check_for_uninitialized_const_var (decl); | |
7343 | ||
7344 | if (TYPE_SIZE (type) != NULL_TREE | |
7345 | && TYPE_NEEDS_CONSTRUCTING (type)) | |
7346 | init = obscure_complex_init (decl, NULL_TREE); | |
7347 | ||
7348 | } | |
7349 | else | |
7350 | check_for_uninitialized_const_var (decl); | |
68642fb6 | 7351 | |
c82dbd95 | 7352 | return init; |
27778b73 MM |
7353 | } |
7354 | ||
7355 | /* If DECL is not a local variable, give it RTL. */ | |
7356 | ||
7357 | static void | |
7358 | make_rtl_for_nonlocal_decl (decl, init, asmspec) | |
7359 | tree decl; | |
7360 | tree init; | |
7361 | const char *asmspec; | |
7362 | { | |
27778b73 MM |
7363 | int toplev; |
7364 | tree type; | |
7365 | ||
7366 | type = TREE_TYPE (decl); | |
7367 | toplev = toplevel_bindings_p (); | |
27778b73 | 7368 | |
f39ee884 MM |
7369 | /* Handle non-variables up front. */ |
7370 | if (TREE_CODE (decl) != VAR_DECL) | |
7371 | { | |
7372 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); | |
7373 | return; | |
7374 | } | |
7375 | ||
7376 | /* Set the DECL_ASSEMBLER_NAME for the variable. */ | |
7377 | if (asmspec) | |
7378 | DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec); | |
7379 | ||
7380 | if (DECL_VIRTUAL_P (decl)) | |
27778b73 | 7381 | make_decl_rtl (decl, NULL_PTR, toplev); |
f39ee884 | 7382 | else if (TREE_READONLY (decl) |
27778b73 MM |
7383 | && DECL_INITIAL (decl) != NULL_TREE |
7384 | && DECL_INITIAL (decl) != error_mark_node | |
7385 | && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))) | |
7386 | { | |
7387 | DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl)); | |
7388 | ||
f3010146 | 7389 | if (toplev && ! TREE_PUBLIC (decl)) |
27778b73 MM |
7390 | { |
7391 | /* If this is a static const, change its apparent linkage | |
7392 | if it belongs to a #pragma interface. */ | |
7393 | if (!interface_unknown) | |
7394 | { | |
7395 | TREE_PUBLIC (decl) = 1; | |
7396 | DECL_EXTERNAL (decl) = interface_only; | |
7397 | } | |
7398 | make_decl_rtl (decl, asmspec, toplev); | |
7399 | } | |
f39ee884 | 7400 | else if (toplev) |
27778b73 MM |
7401 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
7402 | } | |
f39ee884 | 7403 | else if (DECL_LANG_SPECIFIC (decl) && DECL_IN_AGGR_P (decl)) |
27778b73 MM |
7404 | { |
7405 | my_friendly_assert (TREE_STATIC (decl), 19990828); | |
7406 | ||
7407 | if (init == NULL_TREE | |
7408 | #ifdef DEFAULT_STATIC_DEFS | |
7409 | /* If this code is dead, then users must | |
7410 | explicitly declare static member variables | |
7411 | outside the class def'n as well. */ | |
7412 | && TYPE_NEEDS_CONSTRUCTING (type) | |
7413 | #endif | |
7414 | ) | |
7415 | { | |
7416 | DECL_EXTERNAL (decl) = 1; | |
7417 | make_decl_rtl (decl, asmspec, 1); | |
7418 | } | |
7419 | else | |
7420 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); | |
7421 | } | |
f39ee884 MM |
7422 | else if (TREE_CODE (CP_DECL_CONTEXT (decl)) == NAMESPACE_DECL |
7423 | || (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))) | |
27778b73 | 7424 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
27778b73 MM |
7425 | } |
7426 | ||
f3010146 MM |
7427 | /* Create RTL for the local static variable DECL. */ |
7428 | ||
7429 | void | |
7430 | make_rtl_for_local_static (decl) | |
7431 | tree decl; | |
7432 | { | |
f3010146 MM |
7433 | const char *asmspec = NULL; |
7434 | ||
46e8c075 MM |
7435 | /* If we inlined this variable, we could see it's declaration |
7436 | again. */ | |
7437 | if (DECL_RTL (decl)) | |
7438 | return; | |
f3010146 MM |
7439 | |
7440 | if (DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7441 | { | |
7442 | /* The only way this situaton can occur is if the | |
7443 | user specified a name for this DECL using the | |
7444 | `attribute' syntax. */ | |
7445 | asmspec = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
7446 | DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl); | |
7447 | } | |
7448 | ||
7449 | rest_of_decl_compilation (decl, asmspec, /*top_level=*/0, /*at_end=*/0); | |
7450 | } | |
7451 | ||
27778b73 MM |
7452 | /* The old ARM scoping rules injected variables declared in the |
7453 | initialization statement of a for-statement into the surrounding | |
7454 | scope. We support this usage, in order to be backward-compatible. | |
7455 | DECL is a just-declared VAR_DECL; if necessary inject its | |
7456 | declaration into the surrounding scope. */ | |
7457 | ||
b7b8bcd2 | 7458 | void |
27778b73 MM |
7459 | maybe_inject_for_scope_var (decl) |
7460 | tree decl; | |
7461 | { | |
7462 | if (current_binding_level->is_for_scope) | |
7463 | { | |
68642fb6 | 7464 | struct binding_level *outer |
27778b73 MM |
7465 | = current_binding_level->level_chain; |
7466 | ||
7467 | /* Check to see if the same name is already bound at the outer | |
7468 | level, either because it was directly declared, or because a | |
7469 | dead for-decl got preserved. In either case, the code would | |
7470 | not have been valid under the ARM scope rules, so clear | |
7471 | is_for_scope for the current_binding_level. | |
7472 | ||
7473 | Otherwise, we need to preserve the temp slot for decl to last | |
7474 | into the outer binding level. */ | |
7475 | ||
68642fb6 | 7476 | tree outer_binding |
27778b73 | 7477 | = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (decl))); |
68642fb6 | 7478 | |
27778b73 | 7479 | if (outer_binding && BINDING_LEVEL (outer_binding) == outer |
68642fb6 | 7480 | && (TREE_CODE (BINDING_VALUE (outer_binding)) |
27778b73 MM |
7481 | == VAR_DECL) |
7482 | && DECL_DEAD_FOR_LOCAL (BINDING_VALUE (outer_binding))) | |
7483 | { | |
7484 | BINDING_VALUE (outer_binding) | |
7485 | = DECL_SHADOWED_FOR_VAR (BINDING_VALUE (outer_binding)); | |
7486 | current_binding_level->is_for_scope = 0; | |
7487 | } | |
7488 | else if (DECL_IN_MEMORY_P (decl)) | |
7489 | preserve_temp_slots (DECL_RTL (decl)); | |
7490 | } | |
7491 | } | |
7492 | ||
ed5511d9 | 7493 | /* Generate code to initialize DECL (a local variable). */ |
27778b73 | 7494 | |
b7b8bcd2 MM |
7495 | void |
7496 | initialize_local_var (decl, init, flags) | |
27778b73 MM |
7497 | tree decl; |
7498 | tree init; | |
27778b73 MM |
7499 | int flags; |
7500 | { | |
9ed9e79a | 7501 | tree type = TREE_TYPE (decl); |
27778b73 | 7502 | |
9ed9e79a MM |
7503 | /* If the type is bogus, don't bother initializing the variable. */ |
7504 | if (type == error_mark_node) | |
7505 | return; | |
b7b8bcd2 | 7506 | |
b7b8bcd2 MM |
7507 | if (DECL_SIZE (decl) == NULL_TREE && !TREE_STATIC (decl)) |
7508 | { | |
7509 | /* If we used it already as memory, it must stay in memory. */ | |
7510 | DECL_INITIAL (decl) = NULL_TREE; | |
7511 | TREE_ADDRESSABLE (decl) = TREE_USED (decl); | |
7512 | } | |
7513 | ||
9ed9e79a MM |
7514 | /* Local statics are handled differently from ordinary automatic |
7515 | variables. */ | |
7516 | if (TREE_STATIC (decl)) | |
7517 | { | |
7518 | if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE | |
7519 | || TYPE_NEEDS_DESTRUCTOR (type)) | |
7520 | expand_static_init (decl, init); | |
7521 | return; | |
7522 | } | |
7523 | ||
27778b73 MM |
7524 | if (DECL_SIZE (decl) && type != error_mark_node) |
7525 | { | |
7526 | int already_used; | |
68642fb6 | 7527 | |
27778b73 | 7528 | /* Compute and store the initial value. */ |
27778b73 MM |
7529 | already_used = TREE_USED (decl) || TREE_USED (type); |
7530 | ||
7531 | if (init || TYPE_NEEDS_CONSTRUCTING (type)) | |
7532 | { | |
24bef158 MM |
7533 | int saved_stmts_are_full_exprs_p; |
7534 | ||
27778b73 MM |
7535 | emit_line_note (DECL_SOURCE_FILE (decl), |
7536 | DECL_SOURCE_LINE (decl)); | |
24bef158 MM |
7537 | saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p; |
7538 | stmts_are_full_exprs_p = 1; | |
27778b73 | 7539 | finish_expr_stmt (build_aggr_init (decl, init, flags)); |
24bef158 | 7540 | stmts_are_full_exprs_p = saved_stmts_are_full_exprs_p; |
27778b73 MM |
7541 | } |
7542 | ||
7543 | /* Set this to 0 so we can tell whether an aggregate which was | |
7544 | initialized was ever used. Don't do this if it has a | |
7545 | destructor, so we don't complain about the 'resource | |
b7b8bcd2 MM |
7546 | allocation is initialization' idiom. Now set |
7547 | attribute((unused)) on types so decls of that type will be | |
7548 | marked used. (see TREE_USED, above.) */ | |
27778b73 MM |
7549 | if (TYPE_NEEDS_CONSTRUCTING (type) |
7550 | && ! already_used | |
68642fb6 | 7551 | && !TYPE_NEEDS_DESTRUCTOR (type) |
27778b73 MM |
7552 | && DECL_NAME (decl)) |
7553 | TREE_USED (decl) = 0; | |
b7b8bcd2 | 7554 | else if (already_used) |
27778b73 MM |
7555 | TREE_USED (decl) = 1; |
7556 | } | |
24bef158 | 7557 | } |
27778b73 | 7558 | |
24bef158 MM |
7559 | /* Generate code to destroy DECL (a local variable). */ |
7560 | ||
68642fb6 | 7561 | static void |
24bef158 MM |
7562 | destroy_local_var (decl) |
7563 | tree decl; | |
7564 | { | |
9d85d30c MM |
7565 | tree type = TREE_TYPE (decl); |
7566 | tree cleanup; | |
7567 | ||
7568 | /* Only variables get cleaned up. */ | |
7569 | if (TREE_CODE (decl) != VAR_DECL) | |
7570 | return; | |
68642fb6 | 7571 | |
9d85d30c MM |
7572 | /* And only things with destructors need cleaning up. */ |
7573 | if (!TYPE_NEEDS_DESTRUCTOR (type)) | |
7574 | return; | |
7575 | ||
7576 | if (TREE_CODE (decl) == VAR_DECL && | |
7577 | (DECL_EXTERNAL (decl) || TREE_STATIC (decl))) | |
7578 | /* We don't clean up things that aren't defined in this | |
7579 | translation unit, or that need a static cleanup. The latter | |
7580 | are handled by finish_file. */ | |
7581 | return; | |
68642fb6 | 7582 | |
9d85d30c MM |
7583 | /* Compute the cleanup. */ |
7584 | cleanup = maybe_build_cleanup (decl); | |
27778b73 | 7585 | |
b7b8bcd2 | 7586 | /* Record the cleanup required for this declaration. */ |
24bef158 MM |
7587 | if (DECL_SIZE (decl) && TREE_TYPE (decl) != error_mark_node |
7588 | && cleanup) | |
7589 | finish_decl_cleanup (decl, cleanup); | |
7590 | } | |
7591 | ||
7592 | /* Let the back-end know about DECL. */ | |
7593 | ||
7594 | void | |
7595 | emit_local_var (decl) | |
7596 | tree decl; | |
7597 | { | |
7598 | /* Create RTL for this variable. */ | |
7599 | if (DECL_RTL (decl)) | |
46e8c075 MM |
7600 | /* Only a RESULT_DECL should have non-NULL RTL when arriving here. |
7601 | All other local variables are assigned RTL in this function. */ | |
68642fb6 | 7602 | my_friendly_assert (TREE_CODE (decl) == RESULT_DECL, |
24bef158 MM |
7603 | 19990828); |
7604 | else | |
f39ee884 MM |
7605 | { |
7606 | if (DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)) | |
7607 | /* The user must have specified an assembler name for this | |
7608 | variable. Set that up now. */ | |
68642fb6 | 7609 | rest_of_decl_compilation |
f39ee884 MM |
7610 | (decl, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)), |
7611 | /*top_level=*/0, /*at_end=*/0); | |
7612 | else | |
7613 | expand_decl (decl); | |
7614 | } | |
24bef158 MM |
7615 | |
7616 | /* Actually do the initialization. */ | |
7617 | expand_start_target_temps (); | |
7618 | expand_decl_init (decl); | |
7619 | expand_end_target_temps (); | |
27778b73 MM |
7620 | } |
7621 | ||
8d08fdba MS |
7622 | /* Finish processing of a declaration; |
7623 | install its line number and initial value. | |
7624 | If the length of an array type is not known before, | |
7625 | it must be determined now, from the initial value, or it is an error. | |
7626 | ||
82580166 | 7627 | For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers |
8d08fdba MS |
7628 | for aggregates that have constructors alive on the permanent obstack, |
7629 | so that the global initializing functions can be written at the end. | |
7630 | ||
7631 | INIT0 holds the value of an initializer that should be allowed to escape | |
7632 | the normal rules. | |
7633 | ||
6060a796 MS |
7634 | FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0 |
7635 | if the (init) syntax was used. | |
7636 | ||
8d08fdba | 7637 | For functions that take default parameters, DECL points to its |
82580166 | 7638 | "maximal" instantiation. `cp_finish_decl' must then also declared its |
8d08fdba MS |
7639 | subsequently lower and lower forms of instantiation, checking for |
7640 | ambiguity as it goes. This can be sped up later. */ | |
7641 | ||
7642 | void | |
cd9f6678 | 7643 | cp_finish_decl (decl, init, asmspec_tree, flags) |
8d08fdba MS |
7644 | tree decl, init; |
7645 | tree asmspec_tree; | |
6060a796 | 7646 | int flags; |
8d08fdba MS |
7647 | { |
7648 | register tree type; | |
27778b73 | 7649 | tree ttype = NULL_TREE; |
9c0758dd | 7650 | const char *asmspec = NULL; |
8d08fdba MS |
7651 | int was_readonly = 0; |
7652 | ||
7653 | /* If this is 0, then we did not change obstacks. */ | |
7654 | if (! decl) | |
7655 | { | |
7656 | if (init) | |
8251199e | 7657 | error ("assignment (not initialization) in declaration"); |
8d08fdba MS |
7658 | return; |
7659 | } | |
7660 | ||
f9817201 MM |
7661 | /* Handling __FUNCTION__ and its ilk in a template-function requires |
7662 | some special processing because we are called from | |
7663 | language-independent code. */ | |
68642fb6 | 7664 | if (cfun && processing_template_decl |
f9817201 MM |
7665 | && current_function_name_declared == 2) |
7666 | { | |
7667 | /* Since we're in a template function, we need to | |
7668 | push_template_decl. The language-independent code in | |
7669 | declare_hidden_char_array doesn't know to do this. */ | |
7670 | retrofit_lang_decl (decl); | |
7671 | decl = push_template_decl (decl); | |
7672 | ||
68642fb6 | 7673 | if (strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), |
f9817201 MM |
7674 | "__PRETTY_FUNCTION__") == 0) |
7675 | { | |
7676 | init = build (FUNCTION_NAME, const_string_type_node); | |
7677 | DECL_PRETTY_FUNCTION_P (decl) = 1; | |
7678 | } | |
7679 | } | |
7680 | ||
a4443a08 | 7681 | /* If a name was specified, get the string. */ |
8d08fdba | 7682 | if (asmspec_tree) |
8d08fdba | 7683 | asmspec = TREE_STRING_POINTER (asmspec_tree); |
8d08fdba | 7684 | |
2c73f9f5 ML |
7685 | if (init && TREE_CODE (init) == NAMESPACE_DECL) |
7686 | { | |
8251199e | 7687 | cp_error ("Cannot initialize `%D' to namespace `%D'", |
2c73f9f5 ML |
7688 | decl, init); |
7689 | init = NULL_TREE; | |
7690 | } | |
7691 | ||
6ba89f8e MM |
7692 | if (current_class_type |
7693 | && DECL_REAL_CONTEXT (decl) == current_class_type | |
7694 | && TYPE_BEING_DEFINED (current_class_type) | |
7695 | && (DECL_INITIAL (decl) || init)) | |
7696 | DECL_DEFINED_IN_CLASS_P (decl) = 1; | |
7697 | ||
68642fb6 | 7698 | if (TREE_CODE (decl) == VAR_DECL |
9a68c51f JM |
7699 | && DECL_CONTEXT (decl) |
7700 | && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL | |
7701 | && DECL_CONTEXT (decl) != current_namespace | |
7702 | && init) | |
7703 | { | |
7704 | /* Leave the namespace of the object. */ | |
7705 | pop_decl_namespace (); | |
7706 | } | |
7707 | ||
c82dbd95 | 7708 | type = TREE_TYPE (decl); |
8d08fdba | 7709 | |
f376e137 | 7710 | if (type == error_mark_node) |
cd9f6678 | 7711 | return; |
f376e137 | 7712 | |
24bef158 | 7713 | /* Add this declaration to the statement-tree. */ |
f9817201 | 7714 | if (building_stmt_tree () && at_function_scope_p ()) |
24bef158 MM |
7715 | add_decl_stmt (decl); |
7716 | ||
a7a7710d NS |
7717 | if (TYPE_HAS_MUTABLE_P (type)) |
7718 | TREE_READONLY (decl) = 0; | |
24bef158 | 7719 | |
5156628f | 7720 | if (processing_template_decl) |
5566b478 MS |
7721 | { |
7722 | if (init && DECL_INITIAL (decl)) | |
2a1e9fdd | 7723 | DECL_INITIAL (decl) = init; |
5566b478 MS |
7724 | goto finish_end0; |
7725 | } | |
3e41d13b | 7726 | |
27778b73 MM |
7727 | /* Parameters are handled by store_parm_decls, not cp_finish_decl. */ |
7728 | my_friendly_assert (TREE_CODE (decl) != PARM_DECL, 19990828); | |
7729 | ||
8d08fdba MS |
7730 | /* Take care of TYPE_DECLs up front. */ |
7731 | if (TREE_CODE (decl) == TYPE_DECL) | |
7732 | { | |
7733 | if (init && DECL_INITIAL (decl)) | |
7734 | { | |
7735 | /* typedef foo = bar; store the type of bar as the type of foo. */ | |
7736 | TREE_TYPE (decl) = type = TREE_TYPE (init); | |
7737 | DECL_INITIAL (decl) = init = NULL_TREE; | |
7738 | } | |
a0a33927 MS |
7739 | if (type != error_mark_node |
7740 | && IS_AGGR_TYPE (type) && DECL_NAME (decl)) | |
8d08fdba MS |
7741 | { |
7742 | if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type) | |
8251199e | 7743 | cp_warning ("shadowing previous type declaration of `%#D'", decl); |
8d08fdba MS |
7744 | set_identifier_type_value (DECL_NAME (decl), type); |
7745 | CLASSTYPE_GOT_SEMICOLON (type) = 1; | |
7746 | } | |
7747 | GNU_xref_decl (current_function_decl, decl); | |
cffa8729 MS |
7748 | |
7749 | /* If we have installed this as the canonical typedef for this | |
7750 | type, and that type has not been defined yet, delay emitting | |
956d6950 | 7751 | the debug information for it, as we will emit it later. */ |
d2e5ee5c | 7752 | if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl |
cffa8729 MS |
7753 | && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE) |
7754 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; | |
7755 | ||
8d08fdba | 7756 | rest_of_decl_compilation (decl, NULL_PTR, |
5566b478 | 7757 | DECL_CONTEXT (decl) == NULL_TREE, at_eof); |
8d08fdba MS |
7758 | goto finish_end; |
7759 | } | |
3e41d13b | 7760 | |
8d08fdba | 7761 | if (TREE_CODE (decl) != FUNCTION_DECL) |
3e41d13b | 7762 | ttype = target_type (type); |
8d08fdba MS |
7763 | |
7764 | if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl) | |
7765 | && TYPE_NEEDS_CONSTRUCTING (type)) | |
7766 | { | |
8d08fdba MS |
7767 | /* Currently, GNU C++ puts constants in text space, making them |
7768 | impossible to initialize. In the future, one would hope for | |
7769 | an operating system which understood the difference between | |
7770 | initialization and the running of a program. */ | |
7771 | was_readonly = 1; | |
7772 | TREE_READONLY (decl) = 0; | |
7773 | } | |
7774 | ||
27778b73 | 7775 | if (TREE_CODE (decl) == FIELD_DECL && asmspec) |
8d08fdba | 7776 | { |
27778b73 MM |
7777 | /* This must override the asm specifier which was placed by |
7778 | grokclassfn. Lay this out fresh. */ | |
7779 | DECL_RTL (TREE_TYPE (decl)) = NULL_RTX; | |
7780 | DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec); | |
7781 | make_decl_rtl (decl, asmspec, 0); | |
8d08fdba MS |
7782 | } |
7783 | ||
c82dbd95 MM |
7784 | /* Deduce size of array from initialization, if not already known. */ |
7785 | maybe_deduce_size_from_array_init (decl, init); | |
7786 | init = check_initializer (decl, init); | |
3e41d13b | 7787 | |
8d08fdba MS |
7788 | GNU_xref_decl (current_function_decl, decl); |
7789 | ||
8d08fdba | 7790 | if (TREE_CODE (decl) == VAR_DECL) |
57b52417 | 7791 | layout_var_decl (decl); |
8d08fdba MS |
7792 | |
7793 | /* Output the assembler code and/or RTL code for variables and functions, | |
7794 | unless the type is an undefined structure or union. | |
7795 | If not, it will get done when the type is completed. */ | |
8d08fdba MS |
7796 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL |
7797 | || TREE_CODE (decl) == RESULT_DECL) | |
7798 | { | |
27778b73 MM |
7799 | if (TREE_CODE (decl) == VAR_DECL) |
7800 | maybe_commonize_var (decl); | |
8d08fdba | 7801 | |
27778b73 | 7802 | make_rtl_for_nonlocal_decl (decl, init, asmspec); |
8d08fdba | 7803 | |
68642fb6 | 7804 | if (TREE_CODE (type) == FUNCTION_TYPE |
27778b73 | 7805 | || TREE_CODE (type) == METHOD_TYPE) |
68642fb6 | 7806 | abstract_virtuals_error (decl, |
27778b73 | 7807 | strip_array_types (TREE_TYPE (type))); |
68642fb6 | 7808 | else |
27778b73 | 7809 | abstract_virtuals_error (decl, strip_array_types (type)); |
8d08fdba | 7810 | |
8d08fdba | 7811 | if (TREE_CODE (decl) == FUNCTION_DECL) |
faae18ab | 7812 | ; |
67d743fe MS |
7813 | else if (DECL_EXTERNAL (decl) |
7814 | && ! (DECL_LANG_SPECIFIC (decl) | |
7815 | && DECL_NOT_REALLY_EXTERN (decl))) | |
5566b478 MS |
7816 | { |
7817 | if (init) | |
7818 | DECL_INITIAL (decl) = init; | |
7819 | } | |
b35d4555 | 7820 | else if (TREE_CODE (CP_DECL_CONTEXT (decl)) == FUNCTION_DECL) |
8d08fdba | 7821 | { |
b7b8bcd2 | 7822 | /* This is a local declaration. */ |
b35d4555 MM |
7823 | if (doing_semantic_analysis_p ()) |
7824 | maybe_inject_for_scope_var (decl); | |
b7b8bcd2 MM |
7825 | /* Initialize the local variable. But, if we're building a |
7826 | statement-tree, we'll do the initialization when we | |
7827 | expand the tree. */ | |
24bef158 MM |
7828 | if (processing_template_decl) |
7829 | { | |
7830 | if (init || DECL_INITIAL (decl) == error_mark_node) | |
7831 | DECL_INITIAL (decl) = init; | |
7832 | } | |
7833 | else | |
7834 | { | |
b35d4555 MM |
7835 | /* If we're not building RTL, then we need to do so |
7836 | now. */ | |
24bef158 MM |
7837 | if (!building_stmt_tree ()) |
7838 | emit_local_var (decl); | |
b35d4555 | 7839 | /* Initialize the variable. */ |
24bef158 MM |
7840 | initialize_local_var (decl, init, flags); |
7841 | /* Clean up the variable. */ | |
7842 | destroy_local_var (decl); | |
7843 | } | |
8d08fdba | 7844 | } |
9ed9e79a MM |
7845 | else if (TREE_STATIC (decl) && type != error_mark_node) |
7846 | { | |
7847 | /* Cleanups for static variables are handled by `finish_file'. */ | |
7848 | if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE | |
7849 | || TYPE_NEEDS_DESTRUCTOR (type)) | |
7850 | expand_static_init (decl, init); | |
7851 | } | |
8d08fdba MS |
7852 | finish_end0: |
7853 | ||
7854 | /* Undo call to `pushclass' that was done in `start_decl' | |
7855 | due to initialization of qualified member variable. | |
7856 | I.e., Foo::x = 10; */ | |
7857 | { | |
f30432d7 | 7858 | tree context = DECL_REAL_CONTEXT (decl); |
8d08fdba MS |
7859 | if (context |
7860 | && TREE_CODE_CLASS (TREE_CODE (context)) == 't' | |
7861 | && (TREE_CODE (decl) == VAR_DECL | |
7862 | /* We also have a pushclass done that we need to undo here | |
7863 | if we're at top level and declare a method. */ | |
5566b478 MS |
7864 | || TREE_CODE (decl) == FUNCTION_DECL) |
7865 | /* If size hasn't been set, we're still defining it, | |
7866 | and therefore inside the class body; don't pop | |
7867 | the binding level.. */ | |
7868 | && TYPE_SIZE (context) != NULL_TREE | |
7869 | && context == current_class_type) | |
6b400b21 | 7870 | pop_nested_class (); |
8d08fdba MS |
7871 | } |
7872 | } | |
7873 | ||
7874 | finish_end: | |
7875 | ||
39211cd5 MS |
7876 | /* If requested, warn about definitions of large data objects. */ |
7877 | ||
7878 | if (warn_larger_than | |
5156628f | 7879 | && ! processing_template_decl |
39211cd5 MS |
7880 | && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) |
7881 | && !DECL_EXTERNAL (decl)) | |
7882 | { | |
7883 | register tree decl_size = DECL_SIZE (decl); | |
7884 | ||
7885 | if (decl_size && TREE_CODE (decl_size) == INTEGER_CST) | |
7886 | { | |
7887 | unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT; | |
7888 | ||
7889 | if (units > larger_than_size) | |
7890 | warning_with_decl (decl, "size of `%s' is %u bytes", units); | |
7891 | } | |
7892 | } | |
7893 | ||
8d08fdba MS |
7894 | if (was_readonly) |
7895 | TREE_READONLY (decl) = 1; | |
8d08fdba MS |
7896 | } |
7897 | ||
82580166 | 7898 | /* This is here for a midend callback from c-common.c */ |
e92cc029 | 7899 | |
82580166 MS |
7900 | void |
7901 | finish_decl (decl, init, asmspec_tree) | |
7902 | tree decl, init; | |
7903 | tree asmspec_tree; | |
7904 | { | |
cd9f6678 | 7905 | cp_finish_decl (decl, init, asmspec_tree, 0); |
82580166 MS |
7906 | } |
7907 | ||
db4283a0 MM |
7908 | /* Returns a declaration for a VAR_DECL as if: |
7909 | ||
7910 | extern "C" TYPE NAME; | |
7911 | ||
7912 | had been seen. Used to create compiler-generated global | |
7913 | variables. */ | |
7914 | ||
7915 | tree | |
7916 | declare_global_var (name, type) | |
7917 | tree name; | |
7918 | tree type; | |
7919 | { | |
7920 | tree decl; | |
7921 | ||
7922 | push_to_top_level (); | |
7923 | decl = build_decl (VAR_DECL, name, type); | |
7924 | TREE_PUBLIC (decl) = 1; | |
7925 | DECL_EXTERNAL (decl) = 1; | |
7926 | DECL_ARTIFICIAL (decl) = 1; | |
7927 | pushdecl (decl); | |
7928 | cp_finish_decl (decl, NULL_TREE, NULL_TREE, 0); | |
7929 | pop_from_top_level (); | |
7930 | ||
7931 | return decl; | |
7932 | } | |
7933 | ||
7934 | /* Returns a pointer to the `atexit' function. Note that if | |
7935 | FLAG_USE_CXA_ATEXIT is non-zero, then this will actually be the new | |
7936 | `__cxa_atexit' function specified in the IA64 C++ ABI. */ | |
7937 | ||
7938 | static tree | |
7939 | get_atexit_node () | |
7940 | { | |
7941 | tree atexit_fndecl; | |
7942 | tree arg_types; | |
7943 | tree fn_type; | |
7944 | tree fn_ptr_type; | |
7945 | const char *name; | |
7946 | ||
7947 | if (atexit_node) | |
7948 | return atexit_node; | |
7949 | ||
7950 | if (flag_use_cxa_atexit) | |
7951 | { | |
7952 | /* The declaration for `__cxa_atexit' is: | |
7953 | ||
7954 | int __cxa_atexit (void (*)(void *), void *, void *) | |
7955 | ||
7956 | We build up the argument types and then then function type | |
7957 | itself. */ | |
68642fb6 | 7958 | |
db4283a0 MM |
7959 | /* First, build the pointer-to-function type for the first |
7960 | argument. */ | |
7961 | arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); | |
7962 | fn_type = build_function_type (void_type_node, arg_types); | |
7963 | fn_ptr_type = build_pointer_type (fn_type); | |
7964 | /* Then, build the rest of the argument types. */ | |
7965 | arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); | |
7966 | arg_types = tree_cons (NULL_TREE, ptr_type_node, arg_types); | |
7967 | arg_types = tree_cons (NULL_TREE, fn_ptr_type, arg_types); | |
7968 | /* And the final __cxa_atexit type. */ | |
7969 | fn_type = build_function_type (integer_type_node, arg_types); | |
7970 | fn_ptr_type = build_pointer_type (fn_type); | |
7971 | name = "__cxa_atexit"; | |
7972 | } | |
7973 | else | |
7974 | { | |
7975 | /* The declaration for `atexit' is: | |
68642fb6 | 7976 | |
db4283a0 MM |
7977 | int atexit (void (*)()); |
7978 | ||
7979 | We build up the argument types and then then function type | |
7980 | itself. */ | |
7981 | fn_type = build_function_type (void_type_node, void_list_node); | |
7982 | fn_ptr_type = build_pointer_type (fn_type); | |
7983 | arg_types = tree_cons (NULL_TREE, fn_ptr_type, void_list_node); | |
7984 | /* Build the final atexit type. */ | |
7985 | fn_type = build_function_type (integer_type_node, arg_types); | |
7986 | name = "atexit"; | |
7987 | } | |
7988 | ||
7989 | /* Now, build the function declaration. */ | |
7990 | push_lang_context (lang_name_c); | |
7991 | atexit_fndecl = define_function (name, fn_type, /*pfn=*/0, NULL_PTR); | |
7992 | mark_used (atexit_fndecl); | |
7993 | pop_lang_context (); | |
7994 | atexit_node = default_conversion (atexit_fndecl); | |
7995 | ||
7996 | return atexit_node; | |
7997 | } | |
7998 | ||
7999 | /* Returns the __dso_handle VAR_DECL. */ | |
8000 | ||
8001 | static tree | |
8002 | get_dso_handle_node () | |
8003 | { | |
8004 | if (dso_handle_node) | |
8005 | return dso_handle_node; | |
8006 | ||
8007 | /* Declare the variable. */ | |
8008 | dso_handle_node = declare_global_var (get_identifier ("__dso_handle"), | |
8009 | ptr_type_node); | |
8010 | ||
8011 | return dso_handle_node; | |
8012 | } | |
8013 | ||
8014 | /* Begin a new function with internal linkage whose job will be simply | |
8015 | to destroy some particular variable. */ | |
8016 | ||
8017 | static tree | |
8018 | start_cleanup_fn () | |
8019 | { | |
8020 | static int counter = 0; | |
8021 | int old_interface_unknown = interface_unknown; | |
8022 | char name[32]; | |
8023 | tree parmtypes; | |
8024 | tree fntype; | |
8025 | tree fndecl; | |
8026 | ||
8027 | push_to_top_level (); | |
8028 | ||
8029 | /* No need to mangle this. */ | |
8030 | push_lang_context (lang_name_c); | |
8031 | ||
8032 | interface_unknown = 1; | |
8033 | ||
8034 | /* Build the parameter-types. */ | |
8035 | parmtypes = void_list_node; | |
8036 | /* Functions passed to __cxa_atexit take an additional parameter. | |
8037 | We'll just ignore it. After we implement the new calling | |
8038 | convention for destructors, we can eliminate the use of | |
8039 | additional cleanup functions entirely in the -fnew-abi case. */ | |
8040 | if (flag_use_cxa_atexit) | |
8041 | parmtypes = tree_cons (NULL_TREE, ptr_type_node, parmtypes); | |
8042 | /* Build the function type itself. */ | |
8043 | fntype = build_function_type (void_type_node, parmtypes); | |
8044 | /* Build the name of the function. */ | |
8045 | sprintf (name, "__tcf_%d", counter++); | |
8046 | /* Build the function declaration. */ | |
8047 | fndecl = build_lang_decl (FUNCTION_DECL, get_identifier (name), fntype); | |
8048 | /* It's a function with internal linkage, generated by the | |
8049 | compiler. */ | |
8050 | TREE_PUBLIC (fndecl) = 0; | |
8051 | DECL_ARTIFICIAL (fndecl) = 1; | |
8052 | /* Build the parameter. */ | |
8053 | if (flag_use_cxa_atexit) | |
8054 | { | |
8055 | tree parmdecl; | |
8056 | ||
8057 | parmdecl = build_decl (PARM_DECL, NULL_TREE, ptr_type_node); | |
8058 | DECL_CONTEXT (parmdecl) = fndecl; | |
8059 | DECL_ARG_TYPE (parmdecl) = ptr_type_node; | |
8060 | TREE_USED (parmdecl) = 1; | |
8061 | DECL_ARGUMENTS (fndecl) = parmdecl; | |
8062 | } | |
8063 | ||
09ed39ad | 8064 | pushdecl (fndecl); |
db4283a0 MM |
8065 | start_function (/*specs=*/NULL_TREE, fndecl, NULL_TREE, SF_PRE_PARSED); |
8066 | do_pushlevel (); | |
8067 | ||
8068 | interface_unknown = old_interface_unknown; | |
8069 | ||
8070 | pop_lang_context (); | |
8071 | ||
8072 | return current_function_decl; | |
8073 | } | |
8074 | ||
8075 | /* Finish the cleanup function begun by start_cleanup_fn. */ | |
8076 | ||
8077 | static void | |
8078 | end_cleanup_fn () | |
8079 | { | |
8080 | do_poplevel (); | |
8081 | ||
8082 | expand_body (finish_function (lineno, 0)); | |
8083 | ||
8084 | pop_from_top_level (); | |
8085 | } | |
8086 | ||
bf419747 MM |
8087 | /* Generate code to handle the destruction of DECL, an object with |
8088 | static storage duration. */ | |
f0105ed3 | 8089 | |
bf419747 MM |
8090 | void |
8091 | register_dtor_fn (decl) | |
f0105ed3 MM |
8092 | tree decl; |
8093 | { | |
db4283a0 | 8094 | tree cleanup; |
f0105ed3 | 8095 | tree compound_stmt; |
db4283a0 MM |
8096 | tree args; |
8097 | tree fcall; | |
f0105ed3 | 8098 | |
db4283a0 | 8099 | int saved_flag_access_control; |
f0105ed3 | 8100 | |
bf419747 MM |
8101 | if (!TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl))) |
8102 | return; | |
8103 | ||
f0105ed3 MM |
8104 | /* Call build_cleanup before we enter the anonymous function so that |
8105 | any access checks will be done relative to the current scope, | |
8106 | rather than the scope of the anonymous function. */ | |
8107 | build_cleanup (decl); | |
8108 | ||
8109 | /* Now start the function. */ | |
db4283a0 | 8110 | cleanup = start_cleanup_fn (); |
f0105ed3 MM |
8111 | |
8112 | /* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer | |
8113 | to the original function, rather than the anonymous one. That | |
8114 | will make the back-end think that nested functions are in use, | |
8115 | which causes confusion. */ | |
8116 | saved_flag_access_control = flag_access_control; | |
8117 | flag_access_control = 0; | |
8118 | fcall = build_cleanup (decl); | |
8119 | flag_access_control = saved_flag_access_control; | |
8120 | ||
8121 | /* Create the body of the anonymous function. */ | |
8122 | compound_stmt = begin_compound_stmt (/*has_no_scope=*/0); | |
8123 | finish_expr_stmt (fcall); | |
8124 | finish_compound_stmt (/*has_no_scope=*/0, compound_stmt); | |
db4283a0 | 8125 | end_cleanup_fn (); |
f0105ed3 MM |
8126 | |
8127 | /* Call atexit with the cleanup function. */ | |
8128 | mark_addressable (cleanup); | |
8129 | cleanup = build_unary_op (ADDR_EXPR, cleanup, 0); | |
db4283a0 MM |
8130 | if (flag_use_cxa_atexit) |
8131 | { | |
8132 | args = tree_cons (NULL_TREE, get_dso_handle_node (), NULL_TREE); | |
8133 | args = tree_cons (NULL_TREE, null_pointer_node, args); | |
8134 | args = tree_cons (NULL_TREE, cleanup, args); | |
8135 | } | |
8136 | else | |
8137 | args = tree_cons (NULL_TREE, cleanup, NULL_TREE); | |
8138 | finish_expr_stmt (build_function_call (get_atexit_node (), args)); | |
f0105ed3 MM |
8139 | } |
8140 | ||
8d08fdba MS |
8141 | void |
8142 | expand_static_init (decl, init) | |
8143 | tree decl; | |
8144 | tree init; | |
8145 | { | |
8146 | tree oldstatic = value_member (decl, static_aggregates); | |
a4443a08 | 8147 | |
8d08fdba MS |
8148 | if (oldstatic) |
8149 | { | |
8150 | if (TREE_PURPOSE (oldstatic) && init != NULL_TREE) | |
8251199e | 8151 | cp_error ("multiple initializations given for `%D'", decl); |
8d08fdba | 8152 | } |
0aafb128 | 8153 | else if (! toplevel_bindings_p ()) |
8d08fdba MS |
8154 | { |
8155 | /* Emit code to perform this initialization but once. */ | |
8156 | tree temp; | |
b7b8bcd2 | 8157 | tree if_stmt; |
f0105ed3 | 8158 | tree then_clause; |
f1dedc31 MM |
8159 | tree assignment; |
8160 | tree temp_init; | |
8d08fdba | 8161 | |
2036a15c MM |
8162 | /* Emit code to perform this initialization but once. This code |
8163 | looks like: | |
8164 | ||
8165 | static int temp = 0; | |
8166 | if (!temp) { | |
8167 | // Do initialization. | |
8168 | temp = 1; | |
8169 | // Register variable for destruction at end of program. | |
8170 | } | |
8171 | ||
8172 | Note that the `temp' variable is only set to 1 *after* the | |
8173 | initialization is complete. This ensures that an exception, | |
8174 | thrown during the construction, will cause the variable to | |
8175 | reinitialized when we pass through this code again, as per: | |
68642fb6 | 8176 | |
2036a15c MM |
8177 | [stmt.dcl] |
8178 | ||
8179 | If the initialization exits by throwing an exception, the | |
8180 | initialization is not complete, so it will be tried again | |
8181 | the next time control enters the declaration. | |
8182 | ||
8183 | In theory, this process should be thread-safe, too; multiple | |
8184 | threads should not be able to initialize the variable more | |
8185 | than once. We don't yet attempt to ensure thread-safety. */ | |
8d08fdba MS |
8186 | temp = get_temp_name (integer_type_node, 1); |
8187 | rest_of_decl_compilation (temp, NULL_PTR, 0, 0); | |
2036a15c MM |
8188 | |
8189 | /* Begin the conditional initialization. */ | |
b7b8bcd2 MM |
8190 | if_stmt = begin_if_stmt (); |
8191 | finish_if_stmt_cond (build_binary_op (EQ_EXPR, temp, | |
68642fb6 | 8192 | integer_zero_node), |
b7b8bcd2 | 8193 | if_stmt); |
f0105ed3 | 8194 | then_clause = begin_compound_stmt (/*has_no_scope=*/0); |
72b7eeff | 8195 | |
2036a15c | 8196 | /* Do the initialization itself. */ |
28cbf42c | 8197 | if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)) |
f30432d7 | 8198 | || (init && TREE_CODE (init) == TREE_LIST)) |
f1dedc31 | 8199 | assignment = build_aggr_init (decl, init, 0); |
f30432d7 | 8200 | else if (init) |
c557501d MM |
8201 | /* The initialization we're doing here is just a bitwise |
8202 | copy. */ | |
8203 | assignment = build (INIT_EXPR, TREE_TYPE (decl), decl, init); | |
f1dedc31 MM |
8204 | else |
8205 | assignment = NULL_TREE; | |
8206 | ||
8207 | /* Once the assignment is complete, set TEMP to 1. Since the | |
8208 | construction of the static object is complete at this point, | |
8209 | we want to make sure TEMP is set to 1 even if a temporary | |
8210 | constructed during the initialization throws an exception | |
8211 | when it is destroyed. So, we combine the initialization and | |
8212 | the assignment to TEMP into a single expression, ensuring | |
8213 | that when we call finish_expr_stmt the cleanups will not be | |
8214 | run until after TEMP is set to 1. */ | |
8215 | temp_init = build_modify_expr (temp, NOP_EXPR, integer_one_node); | |
8216 | if (assignment) | |
8217 | { | |
8218 | assignment = tree_cons (NULL_TREE, assignment, | |
68642fb6 | 8219 | build_tree_list (NULL_TREE, |
f1dedc31 MM |
8220 | temp_init)); |
8221 | assignment = build_compound_expr (assignment); | |
8222 | } | |
8223 | else | |
8224 | assignment = temp_init; | |
8225 | finish_expr_stmt (assignment); | |
72b7eeff | 8226 | |
2036a15c MM |
8227 | /* Use atexit to register a function for destroying this static |
8228 | variable. */ | |
bf419747 | 8229 | register_dtor_fn (decl); |
72b7eeff | 8230 | |
f0105ed3 | 8231 | finish_compound_stmt (/*has_no_scope=*/0, then_clause); |
b7b8bcd2 MM |
8232 | finish_then_clause (if_stmt); |
8233 | finish_if_stmt (); | |
8d08fdba MS |
8234 | } |
8235 | else | |
bbd15aac | 8236 | static_aggregates = tree_cons (init, decl, static_aggregates); |
8d08fdba | 8237 | } |
3c5c0849 MM |
8238 | |
8239 | /* Finish the declaration of a catch-parameter. */ | |
8240 | ||
b35d4555 | 8241 | tree |
3c5c0849 MM |
8242 | start_handler_parms (declspecs, declarator) |
8243 | tree declspecs; | |
8244 | tree declarator; | |
8245 | { | |
8246 | tree decl; | |
8247 | if (declspecs) | |
8248 | { | |
8249 | decl = grokdeclarator (declarator, declspecs, CATCHPARM, | |
8250 | 1, NULL_TREE); | |
8251 | if (decl == NULL_TREE) | |
8252 | error ("invalid catch parameter"); | |
8253 | } | |
8254 | else | |
8255 | decl = NULL_TREE; | |
b35d4555 MM |
8256 | |
8257 | return decl; | |
3c5c0849 MM |
8258 | } |
8259 | ||
8d08fdba MS |
8260 | \f |
8261 | /* Make TYPE a complete type based on INITIAL_VALUE. | |
8262 | Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered, | |
6ab5c740 | 8263 | 2 if there was no information (in which case assume 0 if DO_DEFAULT). */ |
8d08fdba MS |
8264 | |
8265 | int | |
8266 | complete_array_type (type, initial_value, do_default) | |
8267 | tree type, initial_value; | |
8268 | int do_default; | |
8269 | { | |
8270 | register tree maxindex = NULL_TREE; | |
8271 | int value = 0; | |
68642fb6 | 8272 | |
8d08fdba MS |
8273 | if (initial_value) |
8274 | { | |
8275 | /* Note MAXINDEX is really the maximum index, | |
8276 | one less than the size. */ | |
8277 | if (TREE_CODE (initial_value) == STRING_CST) | |
e1cd6e56 MS |
8278 | { |
8279 | int eltsize | |
8280 | = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value))); | |
8281 | maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value) | |
8282 | / eltsize) - 1, 0); | |
8283 | } | |
8d08fdba MS |
8284 | else if (TREE_CODE (initial_value) == CONSTRUCTOR) |
8285 | { | |
e1cd6e56 MS |
8286 | tree elts = CONSTRUCTOR_ELTS (initial_value); |
8287 | maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node); | |
8288 | for (; elts; elts = TREE_CHAIN (elts)) | |
8289 | { | |
8290 | if (TREE_PURPOSE (elts)) | |
8291 | maxindex = TREE_PURPOSE (elts); | |
8292 | else | |
8293 | maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node); | |
8294 | } | |
8295 | maxindex = copy_node (maxindex); | |
8d08fdba MS |
8296 | } |
8297 | else | |
8298 | { | |
8299 | /* Make an error message unless that happened already. */ | |
8300 | if (initial_value != error_mark_node) | |
8301 | value = 1; | |
0db982be ML |
8302 | else |
8303 | initial_value = NULL_TREE; | |
8d08fdba MS |
8304 | |
8305 | /* Prevent further error messages. */ | |
8306 | maxindex = build_int_2 (0, 0); | |
8307 | } | |
8308 | } | |
8309 | ||
8310 | if (!maxindex) | |
8311 | { | |
8312 | if (do_default) | |
8313 | maxindex = build_int_2 (0, 0); | |
8314 | value = 2; | |
8315 | } | |
8316 | ||
8317 | if (maxindex) | |
8318 | { | |
51c184be | 8319 | tree itype; |
6ab5c740 NS |
8320 | tree domain; |
8321 | ||
8322 | domain = build_index_type (maxindex); | |
8323 | TYPE_DOMAIN (type) = domain; | |
51c184be | 8324 | |
dff6b454 | 8325 | if (! TREE_TYPE (maxindex)) |
6ab5c740 | 8326 | TREE_TYPE (maxindex) = domain; |
51c184be MS |
8327 | if (initial_value) |
8328 | itype = TREE_TYPE (initial_value); | |
8329 | else | |
8330 | itype = NULL; | |
8331 | if (itype && !TYPE_DOMAIN (itype)) | |
6ab5c740 | 8332 | TYPE_DOMAIN (itype) = domain; |
dff6b454 RK |
8333 | /* The type of the main variant should never be used for arrays |
8334 | of different sizes. It should only ever be completed with the | |
8335 | size of the array. */ | |
8336 | if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type))) | |
6ab5c740 | 8337 | TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = domain; |
8d08fdba MS |
8338 | } |
8339 | ||
8340 | /* Lay out the type now that we can get the real answer. */ | |
8341 | ||
8342 | layout_type (type); | |
8343 | ||
8344 | return value; | |
8345 | } | |
8346 | \f | |
8347 | /* Return zero if something is declared to be a member of type | |
8348 | CTYPE when in the context of CUR_TYPE. STRING is the error | |
8349 | message to print in that case. Otherwise, quietly return 1. */ | |
e92cc029 | 8350 | |
8d08fdba | 8351 | static int |
4dacf5bd | 8352 | member_function_or_else (ctype, cur_type, flags) |
8d08fdba | 8353 | tree ctype, cur_type; |
4dacf5bd | 8354 | enum overload_flags flags; |
8d08fdba MS |
8355 | { |
8356 | if (ctype && ctype != cur_type) | |
8357 | { | |
4dacf5bd KG |
8358 | if (flags == DTOR_FLAG) |
8359 | error ("destructor for alien class `%s' cannot be a member", | |
8360 | TYPE_NAME_STRING (ctype)); | |
8361 | else | |
8362 | error ("constructor for alien class `%s' cannot be a member", | |
8363 | TYPE_NAME_STRING (ctype)); | |
8d08fdba MS |
8364 | return 0; |
8365 | } | |
8366 | return 1; | |
8367 | } | |
8368 | \f | |
8369 | /* Subroutine of `grokdeclarator'. */ | |
8370 | ||
8371 | /* Generate errors possibly applicable for a given set of specifiers. | |
8372 | This is for ARM $7.1.2. */ | |
e92cc029 | 8373 | |
8d08fdba MS |
8374 | static void |
8375 | bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises) | |
8376 | tree object; | |
d8e178a0 | 8377 | const char *type; |
8d08fdba MS |
8378 | int virtualp, quals, friendp, raises, inlinep; |
8379 | { | |
8380 | if (virtualp) | |
8251199e | 8381 | cp_error ("`%D' declared as a `virtual' %s", object, type); |
8d08fdba | 8382 | if (inlinep) |
8251199e | 8383 | cp_error ("`%D' declared as an `inline' %s", object, type); |
8d08fdba | 8384 | if (quals) |
8251199e | 8385 | cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration", |
a28e3c7f | 8386 | object, type); |
8d08fdba | 8387 | if (friendp) |
f8e55f34 | 8388 | cp_error_at ("`%D' declared as a friend", object); |
f3e4d63c | 8389 | if (raises) |
f8e55f34 | 8390 | cp_error_at ("`%D' declared with an exception specification", object); |
8d08fdba MS |
8391 | } |
8392 | ||
8393 | /* CTYPE is class type, or null if non-class. | |
8394 | TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE | |
8395 | or METHOD_TYPE. | |
8396 | DECLARATOR is the function's name. | |
8397 | VIRTUALP is truthvalue of whether the function is virtual or not. | |
8398 | FLAGS are to be passed through to `grokclassfn'. | |
8399 | QUALS are qualifiers indicating whether the function is `const' | |
8400 | or `volatile'. | |
8401 | RAISES is a list of exceptions that this function can raise. | |
8402 | CHECK is 1 if we must find this method in CTYPE, 0 if we should | |
68642fb6 | 8403 | not look, and -1 if we should not call `grokclassfn' at all. |
3ddfb0e6 | 8404 | |
20496fa2 | 8405 | Returns `NULL_TREE' if something goes wrong, after issuing |
3ddfb0e6 | 8406 | applicable error messages. */ |
e92cc029 | 8407 | |
8d08fdba | 8408 | static tree |
386b8a85 | 8409 | grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals, |
7a8f9fa9 | 8410 | raises, check, friendp, publicp, inlinep, funcdef_flag, |
2c73f9f5 | 8411 | template_count, in_namespace) |
8d08fdba MS |
8412 | tree ctype, type; |
8413 | tree declarator; | |
386b8a85 | 8414 | tree orig_declarator; |
8d08fdba MS |
8415 | int virtualp; |
8416 | enum overload_flags flags; | |
7a8f9fa9 | 8417 | tree quals, raises; |
386b8a85 | 8418 | int check, friendp, publicp, inlinep, funcdef_flag, template_count; |
2c73f9f5 | 8419 | tree in_namespace; |
8d08fdba MS |
8420 | { |
8421 | tree cname, decl; | |
8422 | int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE; | |
856216bb | 8423 | int has_default_arg = 0; |
42976354 | 8424 | tree t; |
8d08fdba MS |
8425 | |
8426 | if (ctype) | |
8427 | cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL | |
8428 | ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype); | |
8429 | else | |
8430 | cname = NULL_TREE; | |
8431 | ||
8432 | if (raises) | |
8433 | { | |
f30432d7 | 8434 | type = build_exception_variant (type, raises); |
8d08fdba | 8435 | } |
c11b6f21 | 8436 | |
8d08fdba | 8437 | decl = build_lang_decl (FUNCTION_DECL, declarator, type); |
2c73f9f5 | 8438 | /* Propagate volatile out from type to decl. */ |
8d08fdba | 8439 | if (TYPE_VOLATILE (type)) |
893de33c | 8440 | TREE_THIS_VOLATILE (decl) = 1; |
8d08fdba | 8441 | |
79c4d4b7 | 8442 | /* If this decl has namespace scope, set that up. */ |
2c73f9f5 | 8443 | if (in_namespace) |
b262d64c | 8444 | set_decl_namespace (decl, in_namespace, friendp); |
79c4d4b7 JM |
8445 | else if (publicp && ! ctype) |
8446 | DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace); | |
2c73f9f5 | 8447 | |
0f8766b8 JM |
8448 | /* `main' and builtins have implicit 'C' linkage. */ |
8449 | if ((MAIN_NAME_P (declarator) | |
8450 | || (IDENTIFIER_LENGTH (declarator) > 10 | |
8451 | && IDENTIFIER_POINTER (declarator)[0] == '_' | |
8452 | && IDENTIFIER_POINTER (declarator)[1] == '_' | |
8453 | && strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0)) | |
8454 | && current_lang_name == lang_name_cplusplus | |
94706a5c | 8455 | && ctype == NULL_TREE |
79c4d4b7 JM |
8456 | /* NULL_TREE means global namespace. */ |
8457 | && DECL_CONTEXT (decl) == NULL_TREE) | |
0f8766b8 JM |
8458 | DECL_LANGUAGE (decl) = lang_c; |
8459 | ||
8d08fdba MS |
8460 | /* Should probably propagate const out from type to decl I bet (mrs). */ |
8461 | if (staticp) | |
8462 | { | |
8463 | DECL_STATIC_FUNCTION_P (decl) = 1; | |
8464 | DECL_CONTEXT (decl) = ctype; | |
8d08fdba MS |
8465 | } |
8466 | ||
e76a2646 MS |
8467 | if (ctype) |
8468 | DECL_CLASS_CONTEXT (decl) = ctype; | |
8469 | ||
0f8766b8 | 8470 | if (ctype == NULL_TREE && DECL_MAIN_P (decl)) |
faae18ab | 8471 | { |
848b92e1 JM |
8472 | if (processing_template_decl) |
8473 | error ("cannot declare `main' to be a template"); | |
faae18ab | 8474 | if (inlinep) |
8251199e | 8475 | error ("cannot declare `main' to be inline"); |
faae18ab | 8476 | else if (! publicp) |
8251199e | 8477 | error ("cannot declare `main' to be static"); |
faae18ab MS |
8478 | inlinep = 0; |
8479 | publicp = 1; | |
8480 | } | |
50a6dbd7 | 8481 | |
59e76fc6 JM |
8482 | /* Members of anonymous types and local classes have no linkage; make |
8483 | them internal. */ | |
8484 | if (ctype && (ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype)) | |
8485 | || hack_decl_function_context (TYPE_MAIN_DECL (ctype)))) | |
50a6dbd7 JM |
8486 | publicp = 0; |
8487 | ||
8488 | if (publicp) | |
8489 | { | |
8490 | /* [basic.link]: A name with no linkage (notably, the name of a class | |
8491 | or enumeration declared in a local scope) shall not be used to | |
8492 | declare an entity with linkage. | |
8493 | ||
8494 | Only check this for public decls for now. */ | |
8495 | t = no_linkage_check (TREE_TYPE (decl)); | |
8496 | if (t) | |
8497 | { | |
7f7c930e JM |
8498 | if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))) |
8499 | { | |
8500 | if (DECL_LANGUAGE (decl) == lang_c) | |
8501 | /* Allow this; it's pretty common in C. */; | |
8502 | else | |
8503 | cp_pedwarn ("non-local function `%#D' uses anonymous type", | |
8504 | decl); | |
8505 | } | |
50a6dbd7 | 8506 | else |
8251199e | 8507 | cp_pedwarn ("non-local function `%#D' uses local type `%T'", |
cce2be43 | 8508 | decl, t); |
50a6dbd7 JM |
8509 | } |
8510 | } | |
8511 | ||
893de33c | 8512 | TREE_PUBLIC (decl) = publicp; |
faae18ab | 8513 | if (! publicp) |
893de33c JM |
8514 | { |
8515 | DECL_INTERFACE_KNOWN (decl) = 1; | |
8516 | DECL_NOT_REALLY_EXTERN (decl) = 1; | |
8517 | } | |
faae18ab MS |
8518 | |
8519 | if (inlinep) | |
8520 | DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1; | |
8d08fdba MS |
8521 | |
8522 | DECL_EXTERNAL (decl) = 1; | |
8523 | if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE) | |
8524 | { | |
8251199e | 8525 | cp_error ("%smember function `%D' cannot have `%T' method qualifier", |
8d08fdba MS |
8526 | (ctype ? "static " : "non-"), decl, TREE_VALUE (quals)); |
8527 | quals = NULL_TREE; | |
8528 | } | |
8529 | ||
8530 | if (IDENTIFIER_OPNAME_P (DECL_NAME (decl))) | |
8531 | grok_op_properties (decl, virtualp, check < 0); | |
8532 | ||
e76a2646 | 8533 | if (ctype && hack_decl_function_context (decl)) |
893de33c | 8534 | DECL_NO_STATIC_CHAIN (decl) = 1; |
e76a2646 | 8535 | |
42976354 BK |
8536 | for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t)) |
8537 | if (TREE_PURPOSE (t) | |
8538 | && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG) | |
8539 | { | |
856216bb | 8540 | has_default_arg = 1; |
42976354 BK |
8541 | break; |
8542 | } | |
8543 | ||
f9d94ea4 JM |
8544 | if (friendp |
8545 | && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR) | |
8546 | { | |
8547 | if (funcdef_flag) | |
8251199e JM |
8548 | cp_error |
8549 | ("defining explicit specialization `%D' in friend declaration", | |
f9d94ea4 JM |
8550 | orig_declarator); |
8551 | else | |
8552 | { | |
7e2421f7 MM |
8553 | if (PROCESSING_REAL_TEMPLATE_DECL_P ()) |
8554 | { | |
8555 | /* Something like `template <class T> friend void f<T>()'. */ | |
68642fb6 | 8556 | cp_error ("template-id `%D' in declaration of primary template", |
7e2421f7 | 8557 | orig_declarator); |
20496fa2 | 8558 | return NULL_TREE; |
7e2421f7 MM |
8559 | } |
8560 | ||
856216bb | 8561 | |
f9d94ea4 JM |
8562 | /* A friend declaration of the form friend void f<>(). Record |
8563 | the information in the TEMPLATE_ID_EXPR. */ | |
8564 | SET_DECL_IMPLICIT_INSTANTIATION (decl); | |
8565 | DECL_TEMPLATE_INFO (decl) | |
e1b3e07d MM |
8566 | = tree_cons (TREE_OPERAND (orig_declarator, 0), |
8567 | TREE_OPERAND (orig_declarator, 1), | |
8568 | NULL_TREE); | |
856216bb MM |
8569 | |
8570 | if (has_default_arg) | |
8571 | { | |
8572 | cp_error ("default arguments are not allowed in declaration of friend template specialization `%D'", | |
8573 | decl); | |
8574 | return NULL_TREE; | |
8575 | } | |
8576 | ||
8577 | if (inlinep) | |
8578 | { | |
68642fb6 | 8579 | cp_error ("`inline' is not allowed in declaration of friend template specialization `%D'", |
856216bb MM |
8580 | decl); |
8581 | return NULL_TREE; | |
8582 | } | |
f9d94ea4 | 8583 | } |
f84b4be9 | 8584 | } |
386b8a85 | 8585 | |
856216bb MM |
8586 | if (has_default_arg) |
8587 | add_defarg_fn (decl); | |
8588 | ||
0f8766b8 JM |
8589 | /* Plain overloading: will not be grok'd by grokclassfn. */ |
8590 | if (! ctype && ! processing_template_decl | |
8591 | && DECL_LANGUAGE (decl) != lang_c | |
8592 | && (! DECL_USE_TEMPLATE (decl) || name_mangling_version < 1)) | |
8593 | set_mangled_name_for_decl (decl); | |
8594 | ||
1eb0072d JM |
8595 | if (funcdef_flag) |
8596 | /* Make the init_value nonzero so pushdecl knows this is not | |
8597 | tentative. error_mark_node is replaced later with the BLOCK. */ | |
8598 | DECL_INITIAL (decl) = error_mark_node; | |
8599 | ||
75650646 | 8600 | /* Caller will do the rest of this. */ |
8d08fdba MS |
8601 | if (check < 0) |
8602 | return decl; | |
8603 | ||
8604 | if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator) | |
8605 | { | |
8606 | tree tmp; | |
8607 | /* Just handle constructors here. We could do this | |
8608 | inside the following if stmt, but I think | |
8609 | that the code is more legible by breaking this | |
8610 | case out. See comments below for what each of | |
8611 | the following calls is supposed to do. */ | |
8612 | DECL_CONSTRUCTOR_P (decl) = 1; | |
8613 | ||
b370501f | 8614 | grokclassfn (ctype, decl, flags, quals); |
386b8a85 | 8615 | |
e1467ff2 | 8616 | decl = check_explicit_specialization (orig_declarator, decl, |
68642fb6 UD |
8617 | template_count, |
8618 | 2 * (funcdef_flag != 0) + | |
f84b4be9 | 8619 | 4 * (friendp != 0)); |
6c30752f | 8620 | if (decl == error_mark_node) |
20496fa2 | 8621 | return NULL_TREE; |
75650646 | 8622 | |
b370501f | 8623 | if ((! TYPE_FOR_JAVA (ctype) || check_java_method (decl)) |
eff71ab0 | 8624 | && check) |
5566b478 MS |
8625 | { |
8626 | tmp = check_classfn (ctype, decl); | |
98c1c668 JM |
8627 | |
8628 | if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL) | |
8629 | tmp = DECL_TEMPLATE_RESULT(tmp); | |
8630 | ||
e349ee73 | 8631 | if (tmp && DECL_ARTIFICIAL (tmp)) |
8251199e | 8632 | cp_error ("definition of implicitly-declared `%D'", tmp); |
5566b478 MS |
8633 | if (tmp && duplicate_decls (decl, tmp)) |
8634 | return tmp; | |
8635 | } | |
a0a33927 | 8636 | if (! grok_ctor_properties (ctype, decl)) |
20496fa2 | 8637 | return NULL_TREE; |
8d08fdba MS |
8638 | } |
8639 | else | |
8640 | { | |
8641 | tree tmp; | |
8642 | ||
8643 | /* Function gets the ugly name, field gets the nice one. | |
8644 | This call may change the type of the function (because | |
8645 | of default parameters)! */ | |
8646 | if (ctype != NULL_TREE) | |
b370501f | 8647 | grokclassfn (ctype, decl, flags, quals); |
8d08fdba | 8648 | |
e1467ff2 | 8649 | decl = check_explicit_specialization (orig_declarator, decl, |
68642fb6 UD |
8650 | template_count, |
8651 | 2 * (funcdef_flag != 0) + | |
f84b4be9 | 8652 | 4 * (friendp != 0)); |
6c30752f | 8653 | if (decl == error_mark_node) |
20496fa2 | 8654 | return NULL_TREE; |
6c30752f | 8655 | |
eff71ab0 | 8656 | if (ctype != NULL_TREE |
b370501f | 8657 | && (! TYPE_FOR_JAVA (ctype) || check_java_method (decl)) |
eff71ab0 | 8658 | && check) |
5566b478 MS |
8659 | { |
8660 | tmp = check_classfn (ctype, decl); | |
98c1c668 JM |
8661 | |
8662 | if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL) | |
75650646 | 8663 | tmp = DECL_TEMPLATE_RESULT (tmp); |
68642fb6 | 8664 | |
5566b478 MS |
8665 | if (tmp && DECL_STATIC_FUNCTION_P (tmp) |
8666 | && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE) | |
8667 | { | |
8668 | /* Remove the `this' parm added by grokclassfn. | |
8669 | XXX Isn't this done in start_function, too? */ | |
8670 | revert_static_member_fn (&decl, NULL, NULL); | |
8671 | last_function_parms = TREE_CHAIN (last_function_parms); | |
8672 | } | |
e349ee73 | 8673 | if (tmp && DECL_ARTIFICIAL (tmp)) |
8251199e | 8674 | cp_error ("definition of implicitly-declared `%D'", tmp); |
7834ab39 MS |
8675 | if (tmp) |
8676 | { | |
03017874 MM |
8677 | /* Attempt to merge the declarations. This can fail, in |
8678 | the case of some illegal specialization declarations. */ | |
7834ab39 | 8679 | if (!duplicate_decls (decl, tmp)) |
03017874 MM |
8680 | cp_error ("no `%#D' member function declared in class `%T'", |
8681 | decl, ctype); | |
7834ab39 MS |
8682 | return tmp; |
8683 | } | |
5566b478 | 8684 | } |
8d08fdba MS |
8685 | |
8686 | if (ctype == NULL_TREE || check) | |
8687 | return decl; | |
8688 | ||
8d08fdba MS |
8689 | if (virtualp) |
8690 | { | |
2ee887f2 | 8691 | DECL_VIRTUAL_P (decl) = 1; |
8d08fdba MS |
8692 | if (DECL_VINDEX (decl) == NULL_TREE) |
8693 | DECL_VINDEX (decl) = error_mark_node; | |
8694 | IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1; | |
8d08fdba MS |
8695 | } |
8696 | } | |
8697 | return decl; | |
8698 | } | |
8699 | ||
8700 | static tree | |
2c73f9f5 | 8701 | grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace) |
8d08fdba MS |
8702 | tree type; |
8703 | tree declarator; | |
d2e5ee5c | 8704 | RID_BIT_TYPE *specbits_in; |
8d08fdba | 8705 | int initialized; |
a9aedbc2 | 8706 | int constp; |
2c73f9f5 | 8707 | tree in_namespace; |
8d08fdba MS |
8708 | { |
8709 | tree decl; | |
f7da6097 MS |
8710 | RID_BIT_TYPE specbits; |
8711 | ||
8712 | specbits = *specbits_in; | |
8d08fdba MS |
8713 | |
8714 | if (TREE_CODE (type) == OFFSET_TYPE) | |
8715 | { | |
8716 | /* If you declare a static member so that it | |
8717 | can be initialized, the code will reach here. */ | |
5b605f68 MS |
8718 | tree basetype = TYPE_OFFSET_BASETYPE (type); |
8719 | type = TREE_TYPE (type); | |
4ce3d537 | 8720 | decl = build_lang_decl (VAR_DECL, declarator, type); |
5b605f68 MS |
8721 | DECL_CONTEXT (decl) = basetype; |
8722 | DECL_CLASS_CONTEXT (decl) = basetype; | |
f376e137 | 8723 | DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator); |
8d08fdba MS |
8724 | } |
8725 | else | |
30394414 | 8726 | { |
79c4d4b7 JM |
8727 | tree context; |
8728 | ||
8729 | if (in_namespace) | |
8730 | context = in_namespace; | |
8731 | else if (namespace_bindings_p () || RIDBIT_SETP (RID_EXTERN, specbits)) | |
8732 | context = current_namespace; | |
820fcad8 JM |
8733 | else |
8734 | context = NULL_TREE; | |
79c4d4b7 | 8735 | |
68642fb6 | 8736 | if (processing_template_decl) |
cd9f6678 MM |
8737 | /* If we're in a template, we need DECL_LANG_SPECIFIC so that |
8738 | we can call push_template_decl. */ | |
8739 | decl = build_lang_decl (VAR_DECL, declarator, type); | |
9188c363 | 8740 | else |
c82dbd95 | 8741 | decl = build_decl (VAR_DECL, declarator, type); |
79c4d4b7 JM |
8742 | |
8743 | if (context) | |
b262d64c | 8744 | set_decl_namespace (decl, context, 0); |
79c4d4b7 JM |
8745 | |
8746 | context = DECL_CONTEXT (decl); | |
8747 | if (declarator && context && current_lang_name != lang_name_c) | |
8748 | DECL_ASSEMBLER_NAME (decl) = build_static_name (context, declarator); | |
30394414 | 8749 | } |
6060a796 | 8750 | |
2c73f9f5 | 8751 | if (in_namespace) |
b262d64c | 8752 | set_decl_namespace (decl, in_namespace, 0); |
2c73f9f5 | 8753 | |
8d08fdba MS |
8754 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
8755 | { | |
8756 | DECL_THIS_EXTERN (decl) = 1; | |
8757 | DECL_EXTERNAL (decl) = !initialized; | |
8758 | } | |
8759 | ||
8760 | /* In class context, static means one per class, | |
8761 | public access, and static storage. */ | |
2b9dc906 | 8762 | if (DECL_CLASS_SCOPE_P (decl)) |
8d08fdba MS |
8763 | { |
8764 | TREE_PUBLIC (decl) = 1; | |
8765 | TREE_STATIC (decl) = 1; | |
5b605f68 | 8766 | DECL_EXTERNAL (decl) = 0; |
8d08fdba MS |
8767 | } |
8768 | /* At top level, either `static' or no s.c. makes a definition | |
8769 | (perhaps tentative), and absence of `static' makes it public. */ | |
a9aedbc2 | 8770 | else if (toplevel_bindings_p ()) |
8d08fdba | 8771 | { |
a9aedbc2 | 8772 | TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits) |
9fffd093 | 8773 | && (DECL_THIS_EXTERN (decl) || ! constp)); |
8d08fdba MS |
8774 | TREE_STATIC (decl) = ! DECL_EXTERNAL (decl); |
8775 | } | |
8776 | /* Not at top level, only `static' makes a static definition. */ | |
8777 | else | |
8778 | { | |
8779 | TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits); | |
8780 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl); | |
8781 | } | |
50a6dbd7 JM |
8782 | |
8783 | if (TREE_PUBLIC (decl)) | |
8784 | { | |
8785 | /* [basic.link]: A name with no linkage (notably, the name of a class | |
8786 | or enumeration declared in a local scope) shall not be used to | |
8787 | declare an entity with linkage. | |
8788 | ||
8789 | Only check this for public decls for now. */ | |
8790 | tree t = no_linkage_check (TREE_TYPE (decl)); | |
8791 | if (t) | |
8792 | { | |
8793 | if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))) | |
8794 | /* Ignore for now; `enum { foo } e' is pretty common. */; | |
8795 | else | |
8251199e | 8796 | cp_pedwarn ("non-local variable `%#D' uses local type `%T'", |
50a6dbd7 JM |
8797 | decl, t); |
8798 | } | |
8799 | } | |
8800 | ||
8d08fdba MS |
8801 | return decl; |
8802 | } | |
8803 | ||
d8f8dca1 MM |
8804 | /* Create and return a canonical pointer to member function type, for |
8805 | TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */ | |
8d08fdba MS |
8806 | |
8807 | tree | |
8808 | build_ptrmemfunc_type (type) | |
8809 | tree type; | |
8810 | { | |
8811 | tree fields[4]; | |
8812 | tree t; | |
8813 | tree u; | |
46cbda4a | 8814 | tree unqualified_variant = NULL_TREE; |
8d08fdba MS |
8815 | |
8816 | /* If a canonical type already exists for this type, use it. We use | |
8817 | this method instead of type_hash_canon, because it only does a | |
8818 | simple equality check on the list of field members. */ | |
8819 | ||
8820 | if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type))) | |
8821 | return t; | |
8822 | ||
46cbda4a MM |
8823 | /* Make sure that we always have the unqualified pointer-to-member |
8824 | type first. */ | |
8825 | if (CP_TYPE_QUALS (type) != TYPE_UNQUALIFIED) | |
68642fb6 | 8826 | unqualified_variant |
46cbda4a MM |
8827 | = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type)); |
8828 | ||
33848bb0 | 8829 | u = make_aggr_type (UNION_TYPE); |
7ddedda4 | 8830 | SET_IS_AGGR_TYPE (u, 0); |
4ce3d537 MM |
8831 | fields[0] = build_lang_decl (FIELD_DECL, pfn_identifier, type); |
8832 | fields[1] = build_lang_decl (FIELD_DECL, delta2_identifier, | |
8833 | delta_type_node); | |
8d08fdba MS |
8834 | finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node); |
8835 | TYPE_NAME (u) = NULL_TREE; | |
8836 | ||
33848bb0 | 8837 | t = make_aggr_type (RECORD_TYPE); |
8d08fdba | 8838 | |
2c73f9f5 | 8839 | /* Let the front-end know this is a pointer to member function... */ |
db5ae43f | 8840 | TYPE_PTRMEMFUNC_FLAG (t) = 1; |
2c73f9f5 | 8841 | /* ... and not really an aggregate. */ |
7ddedda4 | 8842 | SET_IS_AGGR_TYPE (t, 0); |
8d08fdba | 8843 | |
4ce3d537 MM |
8844 | fields[0] = build_lang_decl (FIELD_DECL, delta_identifier, |
8845 | delta_type_node); | |
8846 | fields[1] = build_lang_decl (FIELD_DECL, index_identifier, | |
8847 | delta_type_node); | |
8848 | fields[2] = build_lang_decl (FIELD_DECL, pfn_or_delta2_identifier, u); | |
8d08fdba MS |
8849 | finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node); |
8850 | ||
8d08fdba MS |
8851 | /* Zap out the name so that the back-end will give us the debugging |
8852 | information for this anonymous RECORD_TYPE. */ | |
8853 | TYPE_NAME (t) = NULL_TREE; | |
8854 | ||
46cbda4a MM |
8855 | /* If this is not the unqualified form of this pointer-to-member |
8856 | type, set the TYPE_MAIN_VARIANT for this type to be the | |
8857 | unqualified type. Since they are actually RECORD_TYPEs that are | |
8858 | not variants of each other, we must do this manually. */ | |
8859 | if (CP_TYPE_QUALS (type) != TYPE_UNQUALIFIED) | |
8860 | { | |
8861 | t = build_qualified_type (t, CP_TYPE_QUALS (type)); | |
8862 | TYPE_MAIN_VARIANT (t) = unqualified_variant; | |
8863 | TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (unqualified_variant); | |
8864 | TYPE_NEXT_VARIANT (unqualified_variant) = t; | |
8865 | } | |
8866 | ||
8867 | /* Cache this pointer-to-member type so that we can find it again | |
8868 | later. */ | |
8d08fdba MS |
8869 | TYPE_SET_PTRMEMFUNC_TYPE (type, t); |
8870 | ||
e92cc029 | 8871 | /* Seems to be wanted. */ |
8d08fdba | 8872 | CLASSTYPE_GOT_SEMICOLON (t) = 1; |
46cbda4a | 8873 | |
8d08fdba MS |
8874 | return t; |
8875 | } | |
8876 | ||
b17e2870 JM |
8877 | /* DECL is a VAR_DECL defined in-class, whose TYPE is also given. |
8878 | Check to see that the definition is valid. Issue appropriate error | |
8879 | messages. Return 1 if the definition is particularly bad, or 0 | |
8880 | otherwise. */ | |
8881 | ||
8882 | int | |
8883 | check_static_variable_definition (decl, type) | |
8884 | tree decl; | |
8885 | tree type; | |
8886 | { | |
8887 | /* Motion 10 at San Diego: If a static const integral data member is | |
8888 | initialized with an integral constant expression, the initializer | |
8889 | may appear either in the declaration (within the class), or in | |
8890 | the definition, but not both. If it appears in the class, the | |
8891 | member is a member constant. The file-scope definition is always | |
8892 | required. */ | |
8893 | if (CLASS_TYPE_P (type) || TREE_CODE (type) == REFERENCE_TYPE) | |
8894 | { | |
68642fb6 | 8895 | cp_error ("in-class initialization of static data member of non-integral type `%T'", |
b17e2870 JM |
8896 | type); |
8897 | /* If we just return the declaration, crashes will sometimes | |
8898 | occur. We therefore return void_type_node, as if this was a | |
8899 | friend declaration, to cause callers to completely ignore | |
8900 | this declaration. */ | |
8901 | return 1; | |
8902 | } | |
8903 | else if (!CP_TYPE_CONST_P (type)) | |
8904 | cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'", | |
8905 | decl); | |
8906 | else if (pedantic && !INTEGRAL_TYPE_P (type)) | |
8907 | cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl, type); | |
8908 | ||
8909 | return 0; | |
8910 | } | |
8911 | ||
2848ad0f MM |
8912 | /* Given the SIZE (i.e., number of elements) in an array, compute an |
8913 | appropriate index type for the array. If non-NULL, NAME is the | |
8914 | name of the thing being declared. */ | |
8915 | ||
c95cd22e | 8916 | tree |
2848ad0f MM |
8917 | compute_array_index_type (name, size) |
8918 | tree name; | |
8919 | tree size; | |
8920 | { | |
8921 | tree itype; | |
8922 | ||
8923 | /* The size might be the result of a cast. */ | |
8924 | STRIP_TYPE_NOPS (size); | |
8925 | ||
8926 | /* It might be a const variable or enumeration constant. */ | |
8927 | if (TREE_READONLY_DECL_P (size)) | |
8928 | size = decl_constant_value (size); | |
8929 | ||
8930 | /* If this involves a template parameter, it will be a constant at | |
8931 | instantiation time, but we don't know what the value is yet. | |
8932 | Even if no template parameters are involved, we may an expression | |
8933 | that is not a constant; we don't even simplify `1 + 2' when | |
8934 | processing a template. */ | |
8935 | if (processing_template_decl) | |
8936 | { | |
8937 | /* Resolve a qualified reference to an enumerator or static | |
8938 | const data member of ours. */ | |
8939 | if (TREE_CODE (size) == SCOPE_REF | |
8940 | && TREE_OPERAND (size, 0) == current_class_type) | |
8941 | { | |
8942 | tree t = lookup_field (current_class_type, | |
8943 | TREE_OPERAND (size, 1), 0, 0); | |
8944 | if (t) | |
8945 | size = t; | |
8946 | } | |
8947 | ||
8948 | return build_index_type (build_min (MINUS_EXPR, sizetype, | |
8949 | size, integer_one_node)); | |
8950 | } | |
8951 | ||
8952 | /* The array bound must be an integer type. */ | |
8953 | if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE | |
8954 | && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE | |
8955 | && TREE_CODE (TREE_TYPE (size)) != BOOLEAN_TYPE) | |
8956 | { | |
d67cdbc3 JM |
8957 | if (name) |
8958 | cp_error ("size of array `%D' has non-integer type", name); | |
8959 | else | |
8960 | cp_error ("size of array has non-integer type"); | |
2848ad0f MM |
8961 | size = integer_one_node; |
8962 | } | |
8963 | ||
8964 | /* Normally, the array-bound will be a constant. */ | |
8965 | if (TREE_CONSTANT (size)) | |
8966 | { | |
8967 | /* Check to see if the array bound overflowed. Make that an | |
8968 | error, no matter how generous we're being. */ | |
8969 | int old_flag_pedantic_errors = flag_pedantic_errors; | |
8970 | int old_pedantic = pedantic; | |
8971 | pedantic = flag_pedantic_errors = 1; | |
8972 | constant_expression_warning (size); | |
8973 | pedantic = old_pedantic; | |
8974 | flag_pedantic_errors = old_flag_pedantic_errors; | |
8975 | ||
8976 | /* An array must have a positive number of elements. */ | |
8977 | if (INT_CST_LT (size, integer_zero_node)) | |
8978 | { | |
d67cdbc3 JM |
8979 | if (name) |
8980 | cp_error ("size of array `%D' is negative", name); | |
8981 | else | |
8982 | cp_error ("size of array is negative"); | |
2848ad0f MM |
8983 | size = integer_one_node; |
8984 | } | |
8985 | /* Except that an extension we allow zero-sized arrays. We | |
68642fb6 | 8986 | always allow them in system headers because glibc uses |
2848ad0f MM |
8987 | them. */ |
8988 | else if (integer_zerop (size) && pedantic && !in_system_header) | |
d67cdbc3 JM |
8989 | { |
8990 | if (name) | |
8991 | cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", name); | |
8992 | else | |
8993 | cp_pedwarn ("ANSI C++ forbids zero-size array"); | |
8994 | } | |
2848ad0f MM |
8995 | } |
8996 | ||
8997 | /* Compute the index of the largest element in the array. It is | |
8998 | one less than the number of elements in the array. */ | |
8999 | itype | |
9000 | = fold (build_binary_op (MINUS_EXPR, | |
9001 | cp_convert (ssizetype, size), | |
9002 | cp_convert (ssizetype, | |
9003 | integer_one_node))); | |
68642fb6 | 9004 | |
2848ad0f MM |
9005 | /* Check for variable-sized arrays. We allow such things as an |
9006 | extension, even though they are not allowed in ANSI/ISO C++. */ | |
9007 | if (!TREE_CONSTANT (itype)) | |
9008 | { | |
9009 | if (pedantic) | |
9010 | { | |
9011 | if (name) | |
9012 | cp_pedwarn ("ANSI C++ forbids variable-size array `%D'", | |
9013 | name); | |
9014 | else | |
9015 | cp_pedwarn ("ANSI C++ forbids variable-size array"); | |
9016 | } | |
9017 | ||
9018 | /* Create a variable-sized array index type. */ | |
9019 | itype = variable_size (itype); | |
9020 | } | |
9021 | /* Make sure that there was no overflow when creating to a signed | |
9022 | index type. (For example, on a 32-bit machine, an array with | |
9023 | size 2^32 - 1 is too big.) */ | |
9024 | else if (TREE_OVERFLOW (itype)) | |
9025 | { | |
9026 | error ("overflow in array dimension"); | |
9027 | TREE_OVERFLOW (itype) = 0; | |
9028 | } | |
68642fb6 | 9029 | |
2848ad0f MM |
9030 | /* Create and return the appropriate index type. */ |
9031 | return build_index_type (itype); | |
9032 | } | |
9033 | ||
9034 | /* Returns an ARRAY_TYPE for an array with SIZE elements of the | |
9035 | indicated TYPE. If non-NULL, NAME is the NAME of the declaration | |
9036 | with this type. */ | |
9037 | ||
9038 | static tree | |
9039 | create_array_type_for_decl (name, type, size) | |
9040 | tree name; | |
9041 | tree type; | |
9042 | tree size; | |
9043 | { | |
9044 | tree itype = NULL_TREE; | |
9045 | const char* error_msg; | |
9046 | ||
9047 | /* If things have already gone awry, bail now. */ | |
9048 | if (type == error_mark_node || size == error_mark_node) | |
9049 | return error_mark_node; | |
9050 | ||
9051 | /* Assume that everything will go OK. */ | |
9052 | error_msg = NULL; | |
9053 | ||
9054 | /* There are some types which cannot be array elements. */ | |
9055 | switch (TREE_CODE (type)) | |
9056 | { | |
9057 | case VOID_TYPE: | |
9058 | error_msg = "array of void"; | |
9059 | break; | |
9060 | ||
9061 | case FUNCTION_TYPE: | |
9062 | error_msg = "array of functions"; | |
9063 | break; | |
9064 | ||
9065 | case REFERENCE_TYPE: | |
9066 | error_msg = "array of references"; | |
9067 | break; | |
9068 | ||
9069 | case OFFSET_TYPE: | |
9070 | error_msg = "array of data members"; | |
9071 | break; | |
9072 | ||
9073 | case METHOD_TYPE: | |
9074 | error_msg = "array of function members"; | |
9075 | break; | |
9076 | ||
9077 | default: | |
9078 | break; | |
9079 | } | |
9080 | ||
9081 | /* If something went wrong, issue an error-message and return. */ | |
9082 | if (error_msg) | |
9083 | { | |
9084 | if (name) | |
9085 | cp_error ("declaration of `%D' as %s", name, error_msg); | |
9086 | else | |
9087 | cp_error ("creating %s", error_msg); | |
9088 | ||
9089 | return error_mark_node; | |
9090 | } | |
9091 | ||
9092 | /* [dcl.array] | |
68642fb6 | 9093 | |
2848ad0f MM |
9094 | The constant expressions that specify the bounds of the arrays |
9095 | can be omitted only for the first member of the sequence. */ | |
9096 | if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)) | |
9097 | { | |
9098 | cp_error ("declaration of `%D' as multidimensional array", | |
9099 | name); | |
9100 | cp_error ("must have bounds for all dimensions except the first"); | |
9101 | ||
9102 | return error_mark_node; | |
9103 | } | |
9104 | ||
9105 | /* Figure out the index type for the array. */ | |
9106 | if (size) | |
9107 | itype = compute_array_index_type (name, size); | |
9108 | ||
9109 | return build_cplus_array_type (type, itype); | |
9110 | } | |
9111 | ||
8d08fdba MS |
9112 | /* Given declspecs and a declarator, |
9113 | determine the name and type of the object declared | |
9114 | and construct a ..._DECL node for it. | |
9115 | (In one case we can return a ..._TYPE node instead. | |
9116 | For invalid input we sometimes return 0.) | |
9117 | ||
9118 | DECLSPECS is a chain of tree_list nodes whose value fields | |
9119 | are the storage classes and type specifiers. | |
9120 | ||
9121 | DECL_CONTEXT says which syntactic context this declaration is in: | |
9122 | NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL. | |
9123 | FUNCDEF for a function definition. Like NORMAL but a few different | |
9124 | error messages in each case. Return value may be zero meaning | |
9125 | this definition is too screwy to try to parse. | |
9126 | MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to | |
9127 | handle member functions (which have FIELD context). | |
9128 | Return value may be zero meaning this definition is too screwy to | |
9129 | try to parse. | |
9130 | PARM for a parameter declaration (either within a function prototype | |
9131 | or before a function body). Make a PARM_DECL, or return void_type_node. | |
db5ae43f | 9132 | CATCHPARM for a parameter declaration before a catch clause. |
8d08fdba MS |
9133 | TYPENAME if for a typename (in a cast or sizeof). |
9134 | Don't make a DECL node; just return the ..._TYPE node. | |
9135 | FIELD for a struct or union field; make a FIELD_DECL. | |
9136 | BITFIELD for a field with specified width. | |
9137 | INITIALIZED is 1 if the decl has an initializer. | |
9138 | ||
b17e2870 JM |
9139 | ATTRLIST is a TREE_LIST node with prefix attributes in TREE_VALUE and |
9140 | normal attributes in TREE_PURPOSE, or NULL_TREE. | |
9141 | ||
70adf8a9 | 9142 | In the TYPENAME case, DECLARATOR is really an abstract declarator. |
8d08fdba MS |
9143 | It may also be so in the PARM case, for a prototype where the |
9144 | argument type is specified but not the name. | |
9145 | ||
9146 | This function is where the complicated C meanings of `static' | |
9147 | and `extern' are interpreted. | |
9148 | ||
9149 | For C++, if there is any monkey business to do, the function which | |
9150 | calls this one must do it, i.e., prepending instance variables, | |
9151 | renaming overloaded function names, etc. | |
9152 | ||
9153 | Note that for this C++, it is an error to define a method within a class | |
9154 | which does not belong to that class. | |
9155 | ||
9156 | Except in the case where SCOPE_REFs are implicitly known (such as | |
9157 | methods within a class being redundantly qualified), | |
9158 | declarations which involve SCOPE_REFs are returned as SCOPE_REFs | |
9159 | (class_name::decl_name). The caller must also deal with this. | |
9160 | ||
9161 | If a constructor or destructor is seen, and the context is FIELD, | |
9162 | then the type gains the attribute TREE_HAS_x. If such a declaration | |
9163 | is erroneous, NULL_TREE is returned. | |
9164 | ||
9165 | QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member | |
535233a8 NS |
9166 | function, these are the qualifiers to give to the `this' pointer. We |
9167 | apply TYPE_QUAL_RESTRICT to the this ptr, not the object. | |
8d08fdba MS |
9168 | |
9169 | May return void_type_node if the declarator turned out to be a friend. | |
9170 | See grokfield for details. */ | |
9171 | ||
9172 | enum return_types { return_normal, return_ctor, return_dtor, return_conversion }; | |
9173 | ||
9174 | tree | |
c11b6f21 | 9175 | grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist) |
8d08fdba MS |
9176 | tree declspecs; |
9177 | tree declarator; | |
9178 | enum decl_context decl_context; | |
9179 | int initialized; | |
c11b6f21 | 9180 | tree attrlist; |
8d08fdba MS |
9181 | { |
9182 | RID_BIT_TYPE specbits; | |
9183 | int nclasses = 0; | |
9184 | tree spec; | |
9185 | tree type = NULL_TREE; | |
9186 | int longlong = 0; | |
9187 | int constp; | |
91063b51 | 9188 | int restrictp; |
8d08fdba | 9189 | int volatilep; |
91063b51 | 9190 | int type_quals; |
db5ae43f | 9191 | int virtualp, explicitp, friendp, inlinep, staticp; |
8d08fdba MS |
9192 | int explicit_int = 0; |
9193 | int explicit_char = 0; | |
37c46b43 | 9194 | int defaulted_int = 0; |
8d08fdba | 9195 | tree typedef_decl = NULL_TREE; |
9c0758dd | 9196 | const char *name; |
8d08fdba MS |
9197 | tree typedef_type = NULL_TREE; |
9198 | int funcdef_flag = 0; | |
9199 | enum tree_code innermost_code = ERROR_MARK; | |
9200 | int bitfield = 0; | |
6125f3be DE |
9201 | #if 0 |
9202 | /* See the code below that used this. */ | |
f6abb50a | 9203 | tree decl_machine_attr = NULL_TREE; |
6125f3be | 9204 | #endif |
8d08fdba MS |
9205 | /* Set this to error_mark_node for FIELD_DECLs we could not handle properly. |
9206 | All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */ | |
9207 | tree init = NULL_TREE; | |
9208 | ||
9209 | /* Keep track of what sort of function is being processed | |
9210 | so that we can warn about default return values, or explicit | |
9211 | return values which do not match prescribed defaults. */ | |
9212 | enum return_types return_type = return_normal; | |
9213 | ||
9214 | tree dname = NULL_TREE; | |
9215 | tree ctype = current_class_type; | |
9216 | tree ctor_return_type = NULL_TREE; | |
9217 | enum overload_flags flags = NO_SPECIAL; | |
8d08fdba | 9218 | tree quals = NULL_TREE; |
c11b6f21 | 9219 | tree raises = NULL_TREE; |
386b8a85 | 9220 | int template_count = 0; |
2c73f9f5 | 9221 | tree in_namespace = NULL_TREE; |
1eab9b56 JM |
9222 | tree inner_attrs; |
9223 | int ignore_attrs; | |
8d08fdba MS |
9224 | |
9225 | RIDBIT_RESET_ALL (specbits); | |
9226 | if (decl_context == FUNCDEF) | |
9227 | funcdef_flag = 1, decl_context = NORMAL; | |
9228 | else if (decl_context == MEMFUNCDEF) | |
9229 | funcdef_flag = -1, decl_context = FIELD; | |
9230 | else if (decl_context == BITFIELD) | |
9231 | bitfield = 1, decl_context = FIELD; | |
9232 | ||
8d08fdba MS |
9233 | /* Look inside a declarator for the name being declared |
9234 | and get it as a string, for an error message. */ | |
9235 | { | |
be99da77 MS |
9236 | tree *next = &declarator; |
9237 | register tree decl; | |
8d08fdba MS |
9238 | name = NULL; |
9239 | ||
be99da77 MS |
9240 | while (next && *next) |
9241 | { | |
9242 | decl = *next; | |
9243 | switch (TREE_CODE (decl)) | |
8d08fdba | 9244 | { |
52fbc847 JM |
9245 | case TREE_LIST: |
9246 | /* For attributes. */ | |
9247 | next = &TREE_VALUE (decl); | |
9248 | break; | |
9249 | ||
be99da77 MS |
9250 | case COND_EXPR: |
9251 | ctype = NULL_TREE; | |
9252 | next = &TREE_OPERAND (decl, 0); | |
9253 | break; | |
8d08fdba | 9254 | |
2c73f9f5 | 9255 | case BIT_NOT_EXPR: /* For C++ destructors! */ |
8d08fdba | 9256 | { |
be99da77 MS |
9257 | tree name = TREE_OPERAND (decl, 0); |
9258 | tree rename = NULL_TREE; | |
9259 | ||
9260 | my_friendly_assert (flags == NO_SPECIAL, 152); | |
9261 | flags = DTOR_FLAG; | |
9262 | return_type = return_dtor; | |
5566b478 MS |
9263 | if (TREE_CODE (name) == TYPE_DECL) |
9264 | TREE_OPERAND (decl, 0) = name = constructor_name (name); | |
be99da77 MS |
9265 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153); |
9266 | if (ctype == NULL_TREE) | |
9267 | { | |
9268 | if (current_class_type == NULL_TREE) | |
9269 | { | |
8251199e | 9270 | error ("destructors must be member functions"); |
be99da77 MS |
9271 | flags = NO_SPECIAL; |
9272 | } | |
9273 | else | |
9274 | { | |
9275 | tree t = constructor_name (current_class_name); | |
9276 | if (t != name) | |
9277 | rename = t; | |
9278 | } | |
9279 | } | |
8d08fdba | 9280 | else |
be99da77 MS |
9281 | { |
9282 | tree t = constructor_name (ctype); | |
9283 | if (t != name) | |
9284 | rename = t; | |
9285 | } | |
51c184be | 9286 | |
be99da77 | 9287 | if (rename) |
39211cd5 | 9288 | { |
8251199e | 9289 | cp_error ("destructor `%T' must match class name `%T'", |
5566b478 | 9290 | name, rename); |
be99da77 | 9291 | TREE_OPERAND (decl, 0) = rename; |
39211cd5 | 9292 | } |
be99da77 | 9293 | next = &name; |
51c184be | 9294 | } |
be99da77 | 9295 | break; |
8d08fdba | 9296 | |
be99da77 | 9297 | case ADDR_EXPR: /* C++ reference declaration */ |
2c73f9f5 | 9298 | /* Fall through. */ |
be99da77 MS |
9299 | case ARRAY_REF: |
9300 | case INDIRECT_REF: | |
9301 | ctype = NULL_TREE; | |
9302 | innermost_code = TREE_CODE (decl); | |
9303 | next = &TREE_OPERAND (decl, 0); | |
9304 | break; | |
8d08fdba | 9305 | |
be99da77 | 9306 | case CALL_EXPR: |
43f887f9 | 9307 | if (parmlist_is_exprlist (CALL_DECLARATOR_PARMS (decl))) |
8d08fdba | 9308 | { |
b17e2870 JM |
9309 | /* This is actually a variable declaration using |
9310 | constructor syntax. We need to call start_decl and | |
9311 | cp_finish_decl so we can get the variable | |
9312 | initialized... */ | |
9313 | ||
9314 | tree attributes, prefix_attributes; | |
be99da77 MS |
9315 | |
9316 | *next = TREE_OPERAND (decl, 0); | |
43f887f9 | 9317 | init = CALL_DECLARATOR_PARMS (decl); |
be99da77 | 9318 | |
b17e2870 JM |
9319 | if (attrlist) |
9320 | { | |
9321 | attributes = TREE_PURPOSE (attrlist); | |
9322 | prefix_attributes = TREE_VALUE (attrlist); | |
9323 | } | |
9324 | else | |
9325 | { | |
9326 | attributes = NULL_TREE; | |
9327 | prefix_attributes = NULL_TREE; | |
9328 | } | |
9329 | ||
9330 | decl = start_decl (declarator, declspecs, 1, | |
9331 | attributes, prefix_attributes); | |
1eb0072d JM |
9332 | if (decl) |
9333 | { | |
9334 | /* Look for __unused__ attribute */ | |
9335 | if (TREE_USED (TREE_TYPE (decl))) | |
9336 | TREE_USED (decl) = 1; | |
9337 | finish_decl (decl, init, NULL_TREE); | |
9338 | } | |
9339 | else | |
9340 | cp_error ("invalid declarator"); | |
be99da77 | 9341 | return 0; |
8d08fdba | 9342 | } |
be99da77 MS |
9343 | innermost_code = TREE_CODE (decl); |
9344 | if (decl_context == FIELD && ctype == NULL_TREE) | |
9345 | ctype = current_class_type; | |
45537677 | 9346 | if (ctype |
c11b6f21 | 9347 | && TREE_OPERAND (decl, 0) |
45537677 MS |
9348 | && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL |
9349 | && ((DECL_NAME (TREE_OPERAND (decl, 0)) | |
9350 | == constructor_name_full (ctype)) | |
9351 | || (DECL_NAME (TREE_OPERAND (decl, 0)) | |
9352 | == constructor_name (ctype))))) | |
be99da77 MS |
9353 | TREE_OPERAND (decl, 0) = constructor_name (ctype); |
9354 | next = &TREE_OPERAND (decl, 0); | |
9355 | decl = *next; | |
9356 | if (ctype != NULL_TREE | |
9357 | && decl != NULL_TREE && flags != DTOR_FLAG | |
9358 | && decl == constructor_name (ctype)) | |
8d08fdba | 9359 | { |
be99da77 MS |
9360 | return_type = return_ctor; |
9361 | ctor_return_type = ctype; | |
8d08fdba | 9362 | } |
be99da77 MS |
9363 | ctype = NULL_TREE; |
9364 | break; | |
68642fb6 | 9365 | |
386b8a85 JM |
9366 | case TEMPLATE_ID_EXPR: |
9367 | { | |
9368 | tree fns = TREE_OPERAND (decl, 0); | |
9369 | ||
9370 | if (TREE_CODE (fns) == LOOKUP_EXPR) | |
9371 | fns = TREE_OPERAND (fns, 0); | |
9372 | ||
8f032717 MM |
9373 | dname = fns; |
9374 | if (TREE_CODE (dname) == COMPONENT_REF) | |
9375 | dname = TREE_OPERAND (dname, 1); | |
9376 | if (TREE_CODE (dname) != IDENTIFIER_NODE) | |
9377 | { | |
9378 | my_friendly_assert (is_overloaded_fn (dname), | |
9379 | 19990331); | |
9380 | dname = DECL_NAME (get_first_fn (dname)); | |
9381 | } | |
386b8a85 | 9382 | } |
2c73f9f5 | 9383 | /* Fall through. */ |
be99da77 MS |
9384 | |
9385 | case IDENTIFIER_NODE: | |
386b8a85 JM |
9386 | if (TREE_CODE (decl) == IDENTIFIER_NODE) |
9387 | dname = decl; | |
9388 | ||
be99da77 MS |
9389 | next = 0; |
9390 | ||
9391 | if (is_rid (dname)) | |
8d08fdba | 9392 | { |
8251199e | 9393 | cp_error ("declarator-id missing; using reserved word `%D'", |
be99da77 MS |
9394 | dname); |
9395 | name = IDENTIFIER_POINTER (dname); | |
8d08fdba | 9396 | } |
be99da77 | 9397 | if (! IDENTIFIER_OPNAME_P (dname) |
956d6950 | 9398 | /* GNU/Linux headers use '__op'. Arrgh. */ |
a703fb38 | 9399 | || (IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname))) |
be99da77 | 9400 | name = IDENTIFIER_POINTER (dname); |
8d08fdba MS |
9401 | else |
9402 | { | |
be99da77 | 9403 | if (IDENTIFIER_TYPENAME_P (dname)) |
8d08fdba | 9404 | { |
be99da77 MS |
9405 | my_friendly_assert (flags == NO_SPECIAL, 154); |
9406 | flags = TYPENAME_FLAG; | |
9407 | ctor_return_type = TREE_TYPE (dname); | |
9408 | return_type = return_conversion; | |
8d08fdba | 9409 | } |
be99da77 | 9410 | name = operator_name_string (dname); |
8d08fdba | 9411 | } |
be99da77 | 9412 | break; |
8d08fdba | 9413 | |
be99da77 MS |
9414 | /* C++ extension */ |
9415 | case SCOPE_REF: | |
9416 | { | |
9417 | /* Perform error checking, and decide on a ctype. */ | |
9418 | tree cname = TREE_OPERAND (decl, 0); | |
9419 | if (cname == NULL_TREE) | |
9420 | ctype = NULL_TREE; | |
2c73f9f5 ML |
9421 | else if (TREE_CODE (cname) == NAMESPACE_DECL) |
9422 | { | |
9423 | ctype = NULL_TREE; | |
9424 | in_namespace = TREE_OPERAND (decl, 0); | |
9425 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9426 | } | |
be99da77 MS |
9427 | else if (! is_aggr_type (cname, 1)) |
9428 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9429 | /* Must test TREE_OPERAND (decl, 1), in case user gives | |
9430 | us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */ | |
9431 | else if (TREE_OPERAND (decl, 1) | |
9432 | && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF) | |
9433 | ctype = cname; | |
73b0fce8 KL |
9434 | else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM |
9435 | || TREE_CODE (cname) == TEMPLATE_TEMPLATE_PARM) | |
5566b478 | 9436 | { |
8251199e | 9437 | cp_error ("`%T::%D' is not a valid declarator", cname, |
5566b478 | 9438 | TREE_OPERAND (decl, 1)); |
8251199e | 9439 | cp_error (" perhaps you want `typename %T::%D' to make it a type", |
5566b478 MS |
9440 | cname, TREE_OPERAND (decl, 1)); |
9441 | return void_type_node; | |
9442 | } | |
be99da77 MS |
9443 | else if (ctype == NULL_TREE) |
9444 | ctype = cname; | |
9445 | else if (TREE_COMPLEXITY (decl) == current_class_depth) | |
9446 | TREE_OPERAND (decl, 0) = ctype; | |
9447 | else | |
9448 | { | |
9449 | if (! UNIQUELY_DERIVED_FROM_P (cname, ctype)) | |
9450 | { | |
8251199e | 9451 | cp_error ("type `%T' is not derived from type `%T'", |
be99da77 MS |
9452 | cname, ctype); |
9453 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9454 | } | |
9455 | else | |
9456 | ctype = cname; | |
9457 | } | |
9458 | ||
c91a56d2 MS |
9459 | if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL |
9460 | && ((DECL_NAME (TREE_OPERAND (decl, 1)) | |
9461 | == constructor_name_full (ctype)) | |
9462 | || (DECL_NAME (TREE_OPERAND (decl, 1)) | |
9463 | == constructor_name (ctype)))) | |
be99da77 MS |
9464 | TREE_OPERAND (decl, 1) = constructor_name (ctype); |
9465 | next = &TREE_OPERAND (decl, 1); | |
9466 | decl = *next; | |
9467 | if (ctype) | |
9468 | { | |
9469 | if (TREE_CODE (decl) == IDENTIFIER_NODE | |
9470 | && constructor_name (ctype) == decl) | |
9471 | { | |
9472 | return_type = return_ctor; | |
9473 | ctor_return_type = ctype; | |
9474 | } | |
9475 | else if (TREE_CODE (decl) == BIT_NOT_EXPR | |
9476 | && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE | |
9477 | && (constructor_name (ctype) == TREE_OPERAND (decl, 0) | |
9478 | || constructor_name_full (ctype) == TREE_OPERAND (decl, 0))) | |
9479 | { | |
9480 | return_type = return_dtor; | |
9481 | ctor_return_type = ctype; | |
9482 | flags = DTOR_FLAG; | |
9483 | TREE_OPERAND (decl, 0) = constructor_name (ctype); | |
9484 | next = &TREE_OPERAND (decl, 0); | |
9485 | } | |
9486 | } | |
9487 | } | |
9488 | break; | |
9489 | ||
9490 | case ERROR_MARK: | |
9491 | next = 0; | |
9492 | break; | |
9493 | ||
45537677 MS |
9494 | case TYPE_DECL: |
9495 | /* Parse error puts this typespec where | |
9496 | a declarator should go. */ | |
8251199e | 9497 | cp_error ("`%T' specified as declarator-id", DECL_NAME (decl)); |
45537677 | 9498 | if (TREE_TYPE (decl) == current_class_type) |
8251199e | 9499 | cp_error (" perhaps you want `%T' for a constructor", |
45537677 MS |
9500 | current_class_name); |
9501 | dname = DECL_NAME (decl); | |
9502 | name = IDENTIFIER_POINTER (dname); | |
9503 | ||
e92cc029 | 9504 | /* Avoid giving two errors for this. */ |
45537677 MS |
9505 | IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE; |
9506 | ||
58010b57 | 9507 | declspecs = tree_cons (NULL_TREE, integer_type_node, declspecs); |
45537677 MS |
9508 | *next = dname; |
9509 | next = 0; | |
9510 | break; | |
9511 | ||
be99da77 | 9512 | default: |
8251199e | 9513 | cp_compiler_error ("`%D' as declarator", decl); |
be99da77 | 9514 | return 0; /* We used to do a 155 abort here. */ |
8d08fdba | 9515 | } |
be99da77 | 9516 | } |
8d08fdba MS |
9517 | } |
9518 | ||
9519 | /* A function definition's declarator must have the form of | |
9520 | a function declarator. */ | |
9521 | ||
9522 | if (funcdef_flag && innermost_code != CALL_EXPR) | |
9523 | return 0; | |
9524 | ||
e1cd6e56 MS |
9525 | if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG) |
9526 | && innermost_code != CALL_EXPR | |
9527 | && ! (ctype && declspecs == NULL_TREE)) | |
9528 | { | |
8251199e | 9529 | cp_error ("declaration of `%D' as non-function", dname); |
e1cd6e56 MS |
9530 | return void_type_node; |
9531 | } | |
9532 | ||
8d08fdba MS |
9533 | /* Anything declared one level down from the top level |
9534 | must be one of the parameters of a function | |
9535 | (because the body is at least two levels down). */ | |
9536 | ||
9537 | /* This heuristic cannot be applied to C++ nodes! Fixed, however, | |
9538 | by not allowing C++ class definitions to specify their parameters | |
9539 | with xdecls (must be spec.d in the parmlist). | |
9540 | ||
9541 | Since we now wait to push a class scope until we are sure that | |
9542 | we are in a legitimate method context, we must set oldcname | |
a9aedbc2 MS |
9543 | explicitly (since current_class_name is not yet alive). |
9544 | ||
9545 | We also want to avoid calling this a PARM if it is in a namespace. */ | |
8d08fdba | 9546 | |
9188c363 | 9547 | if (decl_context == NORMAL && !toplevel_bindings_p ()) |
a9aedbc2 MS |
9548 | { |
9549 | struct binding_level *b = current_binding_level; | |
9550 | current_binding_level = b->level_chain; | |
9551 | if (current_binding_level != 0 && toplevel_bindings_p ()) | |
9552 | decl_context = PARM; | |
9553 | current_binding_level = b; | |
9554 | } | |
8d08fdba | 9555 | |
34fc957d NS |
9556 | if (name == NULL) |
9557 | name = decl_context == PARM ? "parameter" : "type name"; | |
68642fb6 | 9558 | |
8d08fdba MS |
9559 | /* Look through the decl specs and record which ones appear. |
9560 | Some typespecs are defined as built-in typenames. | |
9561 | Others, the ones that are modifiers of other types, | |
9562 | are represented by bits in SPECBITS: set the bits for | |
9563 | the modifiers that appear. Storage class keywords are also in SPECBITS. | |
9564 | ||
9565 | If there is a typedef name or a type, store the type in TYPE. | |
9566 | This includes builtin typedefs such as `int'. | |
9567 | ||
9568 | Set EXPLICIT_INT if the type is `int' or `char' and did not | |
9569 | come from a user typedef. | |
9570 | ||
9571 | Set LONGLONG if `long' is mentioned twice. | |
9572 | ||
9573 | For C++, constructors and destructors have their own fast treatment. */ | |
9574 | ||
9575 | for (spec = declspecs; spec; spec = TREE_CHAIN (spec)) | |
9576 | { | |
9577 | register int i; | |
9578 | register tree id; | |
9579 | ||
9580 | /* Certain parse errors slip through. For example, | |
9581 | `int class;' is not caught by the parser. Try | |
9582 | weakly to recover here. */ | |
9583 | if (TREE_CODE (spec) != TREE_LIST) | |
9584 | return 0; | |
9585 | ||
9586 | id = TREE_VALUE (spec); | |
9587 | ||
9588 | if (TREE_CODE (id) == IDENTIFIER_NODE) | |
9589 | { | |
a3203465 MS |
9590 | if (id == ridpointers[(int) RID_INT] |
9591 | || id == ridpointers[(int) RID_CHAR] | |
9592 | || id == ridpointers[(int) RID_BOOL] | |
9593 | || id == ridpointers[(int) RID_WCHAR]) | |
8d08fdba MS |
9594 | { |
9595 | if (type) | |
8ccc31eb MS |
9596 | { |
9597 | if (id == ridpointers[(int) RID_BOOL]) | |
8251199e | 9598 | error ("`bool' is now a keyword"); |
8ccc31eb | 9599 | else |
8251199e | 9600 | cp_error ("extraneous `%T' ignored", id); |
8ccc31eb | 9601 | } |
8d08fdba MS |
9602 | else |
9603 | { | |
a3203465 MS |
9604 | if (id == ridpointers[(int) RID_INT]) |
9605 | explicit_int = 1; | |
9606 | else if (id == ridpointers[(int) RID_CHAR]) | |
9607 | explicit_char = 1; | |
8d08fdba MS |
9608 | type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id)); |
9609 | } | |
9610 | goto found; | |
9611 | } | |
e92cc029 | 9612 | /* C++ aggregate types. */ |
8d08fdba MS |
9613 | if (IDENTIFIER_HAS_TYPE_VALUE (id)) |
9614 | { | |
9615 | if (type) | |
8251199e | 9616 | cp_error ("multiple declarations `%T' and `%T'", type, id); |
8d08fdba MS |
9617 | else |
9618 | type = IDENTIFIER_TYPE_VALUE (id); | |
9619 | goto found; | |
9620 | } | |
9621 | ||
f376e137 | 9622 | for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++) |
8d08fdba MS |
9623 | { |
9624 | if (ridpointers[i] == id) | |
9625 | { | |
9626 | if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits)) | |
9627 | { | |
795add94 | 9628 | if (pedantic && ! in_system_header && warn_long_long) |
8251199e | 9629 | pedwarn ("ANSI C++ does not support `long long'"); |
9a3b49ac | 9630 | if (longlong) |
8251199e | 9631 | error ("`long long long' is too long for GCC"); |
8d08fdba MS |
9632 | else |
9633 | longlong = 1; | |
9634 | } | |
9635 | else if (RIDBIT_SETP (i, specbits)) | |
8251199e | 9636 | pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id)); |
8d08fdba MS |
9637 | RIDBIT_SET (i, specbits); |
9638 | goto found; | |
9639 | } | |
9640 | } | |
9641 | } | |
e92cc029 | 9642 | /* C++ aggregate types. */ |
73b0fce8 | 9643 | else if (TREE_CODE (id) == TYPE_DECL || TREE_CODE (id) == TEMPLATE_DECL) |
45537677 MS |
9644 | { |
9645 | if (type) | |
8251199e | 9646 | cp_error ("multiple declarations `%T' and `%T'", type, |
45537677 MS |
9647 | TREE_TYPE (id)); |
9648 | else | |
5566b478 MS |
9649 | { |
9650 | type = TREE_TYPE (id); | |
9651 | TREE_VALUE (spec) = type; | |
9652 | } | |
45537677 MS |
9653 | goto found; |
9654 | } | |
8d08fdba | 9655 | if (type) |
8251199e | 9656 | error ("two or more data types in declaration of `%s'", name); |
8d08fdba MS |
9657 | else if (TREE_CODE (id) == IDENTIFIER_NODE) |
9658 | { | |
9659 | register tree t = lookup_name (id, 1); | |
9660 | if (!t || TREE_CODE (t) != TYPE_DECL) | |
8251199e | 9661 | error ("`%s' fails to be a typedef or built in type", |
8d08fdba MS |
9662 | IDENTIFIER_POINTER (id)); |
9663 | else | |
9664 | { | |
9665 | type = TREE_TYPE (t); | |
6125f3be DE |
9666 | #if 0 |
9667 | /* See the code below that used this. */ | |
f6abb50a | 9668 | decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id); |
6125f3be | 9669 | #endif |
8d08fdba MS |
9670 | typedef_decl = t; |
9671 | } | |
9672 | } | |
bd6dd845 | 9673 | else if (id != error_mark_node) |
8d08fdba MS |
9674 | /* Can't change CLASS nodes into RECORD nodes here! */ |
9675 | type = id; | |
9676 | ||
9677 | found: ; | |
9678 | } | |
9679 | ||
9680 | typedef_type = type; | |
9681 | ||
37c46b43 | 9682 | /* No type at all: default to `int', and set DEFAULTED_INT |
6eabb241 | 9683 | because it was not a user-defined typedef. */ |
8d08fdba | 9684 | |
a3203465 MS |
9685 | if (type == NULL_TREE |
9686 | && (RIDBIT_SETP (RID_SIGNED, specbits) | |
9687 | || RIDBIT_SETP (RID_UNSIGNED, specbits) | |
9688 | || RIDBIT_SETP (RID_LONG, specbits) | |
9689 | || RIDBIT_SETP (RID_SHORT, specbits))) | |
9690 | { | |
9691 | /* These imply 'int'. */ | |
9692 | type = integer_type_node; | |
37c46b43 | 9693 | defaulted_int = 1; |
a3203465 MS |
9694 | } |
9695 | ||
8d08fdba MS |
9696 | if (type == NULL_TREE) |
9697 | { | |
9698 | explicit_int = -1; | |
9699 | if (return_type == return_dtor) | |
9700 | type = void_type_node; | |
9701 | else if (return_type == return_ctor) | |
f30432d7 | 9702 | type = build_pointer_type (ctor_return_type); |
51c184be MS |
9703 | else if (return_type == return_conversion) |
9704 | type = ctor_return_type; | |
8d08fdba MS |
9705 | else |
9706 | { | |
41eff652 JM |
9707 | /* We handle `main' specially here, because 'main () { }' is so |
9708 | common. With no options, it is allowed. With -Wreturn-type, | |
9709 | it is a warning. It is only an error with -pedantic-errors. */ | |
9710 | int is_main = (funcdef_flag | |
9711 | && MAIN_NAME_P (dname) | |
9712 | && ctype == NULL_TREE | |
9713 | && in_namespace == NULL_TREE | |
9714 | && current_namespace == global_namespace); | |
9715 | ||
d2c192ad | 9716 | if (in_system_header || flag_ms_extensions) |
1f901793 JM |
9717 | /* Allow it, sigh. */; |
9718 | else if (pedantic || ! is_main) | |
34fc957d NS |
9719 | cp_pedwarn ("ANSI C++ forbids declaration of `%s' with no type", |
9720 | name); | |
41eff652 | 9721 | else if (warn_return_type) |
34fc957d NS |
9722 | cp_warning ("ANSI C++ forbids declaration of `%s' with no type", |
9723 | name); | |
41eff652 | 9724 | |
8d08fdba MS |
9725 | type = integer_type_node; |
9726 | } | |
9727 | } | |
9728 | else if (return_type == return_dtor) | |
9729 | { | |
8251199e | 9730 | error ("return type specification for destructor invalid"); |
8d08fdba MS |
9731 | type = void_type_node; |
9732 | } | |
9733 | else if (return_type == return_ctor) | |
9734 | { | |
8251199e | 9735 | error ("return type specification for constructor invalid"); |
f30432d7 | 9736 | type = build_pointer_type (ctor_return_type); |
8d08fdba | 9737 | } |
51c184be MS |
9738 | else if (return_type == return_conversion) |
9739 | { | |
3bfdc719 | 9740 | if (!same_type_p (type, ctor_return_type)) |
8251199e | 9741 | cp_error ("operator `%T' declared to return `%T'", |
51c184be MS |
9742 | ctor_return_type, type); |
9743 | else | |
8251199e | 9744 | cp_pedwarn ("return type specified for `operator %T'", |
51c184be MS |
9745 | ctor_return_type); |
9746 | ||
9747 | type = ctor_return_type; | |
9748 | } | |
8d08fdba MS |
9749 | |
9750 | ctype = NULL_TREE; | |
9751 | ||
9752 | /* Now process the modifiers that were specified | |
9753 | and check for invalid combinations. */ | |
9754 | ||
9755 | /* Long double is a special combination. */ | |
9756 | ||
9757 | if (RIDBIT_SETP (RID_LONG, specbits) | |
9758 | && TYPE_MAIN_VARIANT (type) == double_type_node) | |
9759 | { | |
9760 | RIDBIT_RESET (RID_LONG, specbits); | |
68642fb6 | 9761 | type = build_qualified_type (long_double_type_node, |
91063b51 | 9762 | CP_TYPE_QUALS (type)); |
8d08fdba MS |
9763 | } |
9764 | ||
9765 | /* Check all other uses of type modifiers. */ | |
9766 | ||
9767 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
9768 | || RIDBIT_SETP (RID_SIGNED, specbits) | |
9769 | || RIDBIT_SETP (RID_LONG, specbits) | |
9770 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
9771 | { | |
9772 | int ok = 0; | |
9773 | ||
9774 | if (TREE_CODE (type) == REAL_TYPE) | |
8251199e | 9775 | error ("short, signed or unsigned invalid for `%s'", name); |
b7484fbe | 9776 | else if (TREE_CODE (type) != INTEGER_TYPE) |
8251199e | 9777 | error ("long, short, signed or unsigned invalid for `%s'", name); |
8d08fdba MS |
9778 | else if (RIDBIT_SETP (RID_LONG, specbits) |
9779 | && RIDBIT_SETP (RID_SHORT, specbits)) | |
8251199e | 9780 | error ("long and short specified together for `%s'", name); |
8d08fdba MS |
9781 | else if ((RIDBIT_SETP (RID_LONG, specbits) |
9782 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
9783 | && explicit_char) | |
8251199e | 9784 | error ("long or short specified with char for `%s'", name); |
8d08fdba MS |
9785 | else if ((RIDBIT_SETP (RID_LONG, specbits) |
9786 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
9787 | && TREE_CODE (type) == REAL_TYPE) | |
8251199e | 9788 | error ("long or short specified with floating type for `%s'", name); |
8d08fdba MS |
9789 | else if (RIDBIT_SETP (RID_SIGNED, specbits) |
9790 | && RIDBIT_SETP (RID_UNSIGNED, specbits)) | |
8251199e | 9791 | error ("signed and unsigned given together for `%s'", name); |
8d08fdba MS |
9792 | else |
9793 | { | |
9794 | ok = 1; | |
37c46b43 | 9795 | if (!explicit_int && !defaulted_int && !explicit_char && pedantic) |
8d08fdba | 9796 | { |
8251199e | 9797 | pedwarn ("long, short, signed or unsigned used invalidly for `%s'", |
8d08fdba MS |
9798 | name); |
9799 | if (flag_pedantic_errors) | |
9800 | ok = 0; | |
9801 | } | |
9802 | } | |
9803 | ||
9804 | /* Discard the type modifiers if they are invalid. */ | |
9805 | if (! ok) | |
9806 | { | |
9807 | RIDBIT_RESET (RID_UNSIGNED, specbits); | |
9808 | RIDBIT_RESET (RID_SIGNED, specbits); | |
9809 | RIDBIT_RESET (RID_LONG, specbits); | |
9810 | RIDBIT_RESET (RID_SHORT, specbits); | |
9811 | longlong = 0; | |
9812 | } | |
9813 | } | |
9814 | ||
37c46b43 MS |
9815 | if (RIDBIT_SETP (RID_COMPLEX, specbits) |
9816 | && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE) | |
9817 | { | |
8251199e | 9818 | error ("complex invalid for `%s'", name); |
37c46b43 MS |
9819 | RIDBIT_RESET (RID_COMPLEX, specbits); |
9820 | } | |
9821 | ||
8d08fdba MS |
9822 | /* Decide whether an integer type is signed or not. |
9823 | Optionally treat bitfields as signed by default. */ | |
9824 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
b89c5a7b MM |
9825 | /* [class.bit] |
9826 | ||
9827 | It is implementation-defined whether a plain (neither | |
9828 | explicitly signed or unsigned) char, short, int, or long | |
9829 | bit-field is signed or unsigned. | |
68642fb6 | 9830 | |
b89c5a7b MM |
9831 | Naturally, we extend this to long long as well. Note that |
9832 | this does not include wchar_t. */ | |
9833 | || (bitfield && !flag_signed_bitfields | |
9834 | && RIDBIT_NOTSETP (RID_SIGNED, specbits) | |
9835 | /* A typedef for plain `int' without `signed' can be | |
9836 | controlled just like plain `int', but a typedef for | |
9837 | `signed int' cannot be so controlled. */ | |
68642fb6 | 9838 | && !(typedef_decl |
29bbeb1c | 9839 | && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)) |
b89c5a7b MM |
9840 | && (TREE_CODE (type) == INTEGER_TYPE |
9841 | || TREE_CODE (type) == CHAR_TYPE) | |
29bbeb1c | 9842 | && !same_type_p (TYPE_MAIN_VARIANT (type), wchar_type_node))) |
8d08fdba MS |
9843 | { |
9844 | if (longlong) | |
9845 | type = long_long_unsigned_type_node; | |
9846 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
9847 | type = long_unsigned_type_node; | |
9848 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
9849 | type = short_unsigned_type_node; | |
9850 | else if (type == char_type_node) | |
9851 | type = unsigned_char_type_node; | |
9852 | else if (typedef_decl) | |
9853 | type = unsigned_type (type); | |
9854 | else | |
9855 | type = unsigned_type_node; | |
9856 | } | |
9857 | else if (RIDBIT_SETP (RID_SIGNED, specbits) | |
9858 | && type == char_type_node) | |
9859 | type = signed_char_type_node; | |
9860 | else if (longlong) | |
9861 | type = long_long_integer_type_node; | |
9862 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
9863 | type = long_integer_type_node; | |
9864 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
9865 | type = short_integer_type_node; | |
9866 | ||
37c46b43 MS |
9867 | if (RIDBIT_SETP (RID_COMPLEX, specbits)) |
9868 | { | |
9869 | /* If we just have "complex", it is equivalent to | |
9870 | "complex double", but if any modifiers at all are specified it is | |
9871 | the complex form of TYPE. E.g, "complex short" is | |
9872 | "complex short int". */ | |
9873 | ||
9874 | if (defaulted_int && ! longlong | |
9875 | && ! (RIDBIT_SETP (RID_LONG, specbits) | |
9876 | || RIDBIT_SETP (RID_SHORT, specbits) | |
9877 | || RIDBIT_SETP (RID_SIGNED, specbits) | |
9878 | || RIDBIT_SETP (RID_UNSIGNED, specbits))) | |
9879 | type = complex_double_type_node; | |
9880 | else if (type == integer_type_node) | |
9881 | type = complex_integer_type_node; | |
9882 | else if (type == float_type_node) | |
9883 | type = complex_float_type_node; | |
9884 | else if (type == double_type_node) | |
9885 | type = complex_double_type_node; | |
9886 | else if (type == long_double_type_node) | |
9887 | type = complex_long_double_type_node; | |
9888 | else | |
9889 | type = build_complex_type (type); | |
9890 | } | |
9891 | ||
68642fb6 | 9892 | if (return_type == return_conversion |
3ac3d9ea | 9893 | && (RIDBIT_SETP (RID_CONST, specbits) |
91063b51 MM |
9894 | || RIDBIT_SETP (RID_VOLATILE, specbits) |
9895 | || RIDBIT_SETP (RID_RESTRICT, specbits))) | |
9896 | cp_error ("qualifiers are not allowed on declaration of `operator %T'", | |
3ac3d9ea MM |
9897 | ctor_return_type); |
9898 | ||
8d08fdba MS |
9899 | /* Set CONSTP if this declaration is `const', whether by |
9900 | explicit specification or via a typedef. | |
9901 | Likewise for VOLATILEP. */ | |
9902 | ||
91063b51 | 9903 | constp = !! RIDBIT_SETP (RID_CONST, specbits) + CP_TYPE_CONST_P (type); |
68642fb6 | 9904 | restrictp = |
91063b51 | 9905 | !! RIDBIT_SETP (RID_RESTRICT, specbits) + CP_TYPE_RESTRICT_P (type); |
68642fb6 | 9906 | volatilep = |
91063b51 MM |
9907 | !! RIDBIT_SETP (RID_VOLATILE, specbits) + CP_TYPE_VOLATILE_P (type); |
9908 | type_quals = ((constp ? TYPE_QUAL_CONST : 0) | |
9909 | | (restrictp ? TYPE_QUAL_RESTRICT : 0) | |
9910 | | (volatilep ? TYPE_QUAL_VOLATILE : 0)); | |
9911 | type = cp_build_qualified_type (type, type_quals); | |
8d08fdba MS |
9912 | staticp = 0; |
9913 | inlinep = !! RIDBIT_SETP (RID_INLINE, specbits); | |
8d08fdba | 9914 | virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits); |
db5ae43f MS |
9915 | RIDBIT_RESET (RID_VIRTUAL, specbits); |
9916 | explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0; | |
9917 | RIDBIT_RESET (RID_EXPLICIT, specbits); | |
8d08fdba | 9918 | |
8d08fdba MS |
9919 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
9920 | staticp = 1 + (decl_context == FIELD); | |
9921 | ||
9922 | if (virtualp && staticp == 2) | |
9923 | { | |
8251199e | 9924 | cp_error ("member `%D' cannot be declared both virtual and static", |
8d08fdba MS |
9925 | dname); |
9926 | staticp = 0; | |
9927 | } | |
9928 | friendp = RIDBIT_SETP (RID_FRIEND, specbits); | |
8d08fdba MS |
9929 | RIDBIT_RESET (RID_FRIEND, specbits); |
9930 | ||
8d08fdba MS |
9931 | /* Warn if two storage classes are given. Default to `auto'. */ |
9932 | ||
9933 | if (RIDBIT_ANY_SET (specbits)) | |
9934 | { | |
9935 | if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++; | |
9936 | if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++; | |
9937 | if (decl_context == PARM && nclasses > 0) | |
8251199e | 9938 | error ("storage class specifiers invalid in parameter declarations"); |
8d08fdba MS |
9939 | if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
9940 | { | |
9941 | if (decl_context == PARM) | |
8251199e | 9942 | error ("typedef declaration invalid in parameter declaration"); |
8d08fdba MS |
9943 | nclasses++; |
9944 | } | |
9945 | if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++; | |
9946 | if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++; | |
9947 | } | |
9948 | ||
9949 | /* Give error if `virtual' is used outside of class declaration. */ | |
b7484fbe MS |
9950 | if (virtualp |
9951 | && (current_class_name == NULL_TREE || decl_context != FIELD)) | |
8d08fdba | 9952 | { |
8251199e | 9953 | error ("virtual outside class declaration"); |
8d08fdba MS |
9954 | virtualp = 0; |
9955 | } | |
8d08fdba MS |
9956 | |
9957 | /* Static anonymous unions are dealt with here. */ | |
9958 | if (staticp && decl_context == TYPENAME | |
9959 | && TREE_CODE (declspecs) == TREE_LIST | |
6bdb8141 | 9960 | && ANON_AGGR_TYPE_P (TREE_VALUE (declspecs))) |
8d08fdba MS |
9961 | decl_context = FIELD; |
9962 | ||
8d08fdba MS |
9963 | /* Warn about storage classes that are invalid for certain |
9964 | kinds of declarations (parameters, typenames, etc.). */ | |
9965 | ||
9966 | if (nclasses > 1) | |
8251199e | 9967 | error ("multiple storage classes in declaration of `%s'", name); |
8d08fdba MS |
9968 | else if (decl_context != NORMAL && nclasses > 0) |
9969 | { | |
db5ae43f | 9970 | if ((decl_context == PARM || decl_context == CATCHPARM) |
8d08fdba MS |
9971 | && (RIDBIT_SETP (RID_REGISTER, specbits) |
9972 | || RIDBIT_SETP (RID_AUTO, specbits))) | |
9973 | ; | |
fc378698 MS |
9974 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
9975 | ; | |
8d08fdba | 9976 | else if (decl_context == FIELD |
8d08fdba MS |
9977 | /* C++ allows static class elements */ |
9978 | && RIDBIT_SETP (RID_STATIC, specbits)) | |
9979 | /* C++ also allows inlines and signed and unsigned elements, | |
9980 | but in those cases we don't come in here. */ | |
9981 | ; | |
9982 | else | |
9983 | { | |
9984 | if (decl_context == FIELD) | |
9985 | { | |
b7484fbe MS |
9986 | tree tmp = NULL_TREE; |
9987 | register int op = 0; | |
9988 | ||
9989 | if (declarator) | |
9990 | { | |
68642fb6 | 9991 | /* Avoid trying to get an operand off an identifier node. */ |
9e9ff709 MS |
9992 | if (TREE_CODE (declarator) == IDENTIFIER_NODE) |
9993 | tmp = declarator; | |
9994 | else | |
9995 | tmp = TREE_OPERAND (declarator, 0); | |
b7484fbe MS |
9996 | op = IDENTIFIER_OPNAME_P (tmp); |
9997 | } | |
8251199e | 9998 | error ("storage class specified for %s `%s'", |
6eabb241 | 9999 | op ? "member operator" : "field", |
8d08fdba MS |
10000 | op ? operator_name_string (tmp) : name); |
10001 | } | |
10002 | else | |
b9d12519 KG |
10003 | { |
10004 | if (decl_context == PARM || decl_context == CATCHPARM) | |
10005 | error ("storage class specified for parameter `%s'", name); | |
10006 | else | |
10007 | error ("storage class specified for typename"); | |
10008 | } | |
8d08fdba MS |
10009 | RIDBIT_RESET (RID_REGISTER, specbits); |
10010 | RIDBIT_RESET (RID_AUTO, specbits); | |
10011 | RIDBIT_RESET (RID_EXTERN, specbits); | |
8d08fdba MS |
10012 | } |
10013 | } | |
10014 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag) | |
10015 | { | |
a9aedbc2 | 10016 | if (toplevel_bindings_p ()) |
8d08fdba | 10017 | { |
59be0cdd | 10018 | /* It's common practice (and completely valid) to have a const |
8d08fdba | 10019 | be initialized and declared extern. */ |
950ad3c3 | 10020 | if (!(type_quals & TYPE_QUAL_CONST)) |
8251199e | 10021 | warning ("`%s' initialized and declared `extern'", name); |
8d08fdba MS |
10022 | } |
10023 | else | |
8251199e | 10024 | error ("`%s' has both `extern' and initializer", name); |
8d08fdba MS |
10025 | } |
10026 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag | |
a9aedbc2 | 10027 | && ! toplevel_bindings_p ()) |
8251199e | 10028 | error ("nested function `%s' declared `extern'", name); |
a9aedbc2 | 10029 | else if (toplevel_bindings_p ()) |
8d08fdba MS |
10030 | { |
10031 | if (RIDBIT_SETP (RID_AUTO, specbits)) | |
8251199e | 10032 | error ("top-level declaration of `%s' specifies `auto'", name); |
8d08fdba MS |
10033 | } |
10034 | ||
909e536a | 10035 | if (nclasses > 0 && friendp) |
8251199e | 10036 | error ("storage class specifiers invalid in friend function declarations"); |
909e536a | 10037 | |
8d08fdba MS |
10038 | /* Now figure out the structure of the declarator proper. |
10039 | Descend through it, creating more complex types, until we reach | |
10040 | the declared identifier (or NULL_TREE, in an absolute declarator). */ | |
10041 | ||
1eab9b56 | 10042 | inner_attrs = NULL_TREE; |
68642fb6 | 10043 | ignore_attrs = 0; |
1eab9b56 | 10044 | |
386b8a85 JM |
10045 | while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE |
10046 | && TREE_CODE (declarator) != TEMPLATE_ID_EXPR) | |
8d08fdba MS |
10047 | { |
10048 | /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]), | |
10049 | an INDIRECT_REF (for *...), | |
10050 | a CALL_EXPR (for ...(...)), | |
10051 | an identifier (for the name being declared) | |
10052 | or a null pointer (for the place in an absolute declarator | |
10053 | where the name was omitted). | |
10054 | For the last two cases, we have just exited the loop. | |
10055 | ||
10056 | For C++ it could also be | |
10057 | a SCOPE_REF (for class :: ...). In this case, we have converted | |
10058 | sensible names to types, and those are the values we use to | |
10059 | qualify the member name. | |
10060 | an ADDR_EXPR (for &...), | |
10061 | a BIT_NOT_EXPR (for destructors) | |
8d08fdba MS |
10062 | |
10063 | At this point, TYPE is the type of elements of an array, | |
10064 | or for a function to return, or for a pointer to point to. | |
10065 | After this sequence of ifs, TYPE is the type of the | |
10066 | array or function or pointer, and DECLARATOR has had its | |
10067 | outermost layer removed. */ | |
10068 | ||
bd6dd845 | 10069 | if (type == error_mark_node) |
8d08fdba MS |
10070 | { |
10071 | if (TREE_CODE (declarator) == SCOPE_REF) | |
10072 | declarator = TREE_OPERAND (declarator, 1); | |
10073 | else | |
10074 | declarator = TREE_OPERAND (declarator, 0); | |
10075 | continue; | |
10076 | } | |
10077 | if (quals != NULL_TREE | |
10078 | && (declarator == NULL_TREE | |
10079 | || TREE_CODE (declarator) != SCOPE_REF)) | |
10080 | { | |
10081 | if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE) | |
10082 | ctype = TYPE_METHOD_BASETYPE (type); | |
10083 | if (ctype != NULL_TREE) | |
10084 | { | |
8d08fdba | 10085 | tree dummy = build_decl (TYPE_DECL, NULL_TREE, type); |
535233a8 | 10086 | grok_method_quals (ctype, dummy, quals); |
8d08fdba | 10087 | type = TREE_TYPE (dummy); |
535233a8 | 10088 | ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type))); |
8d08fdba MS |
10089 | quals = NULL_TREE; |
10090 | } | |
10091 | } | |
1eab9b56 JM |
10092 | |
10093 | /* See the comment for the TREE_LIST case, below. */ | |
10094 | if (ignore_attrs) | |
10095 | ignore_attrs = 0; | |
10096 | else if (inner_attrs) | |
10097 | { | |
10098 | decl_attributes (type, inner_attrs, NULL_TREE); | |
10099 | inner_attrs = NULL_TREE; | |
10100 | } | |
10101 | ||
8d08fdba MS |
10102 | switch (TREE_CODE (declarator)) |
10103 | { | |
52fbc847 JM |
10104 | case TREE_LIST: |
10105 | { | |
10106 | /* We encode a declarator with embedded attributes using | |
1eab9b56 JM |
10107 | a TREE_LIST. The attributes apply to the declarator |
10108 | directly inside them, so we have to skip an iteration | |
10109 | before applying them to the type. If the declarator just | |
10110 | inside is the declarator-id, we apply the attrs to the | |
10111 | decl itself. */ | |
10112 | inner_attrs = TREE_PURPOSE (declarator); | |
10113 | ignore_attrs = 1; | |
52fbc847 | 10114 | declarator = TREE_VALUE (declarator); |
52fbc847 JM |
10115 | } |
10116 | break; | |
10117 | ||
8d08fdba MS |
10118 | case ARRAY_REF: |
10119 | { | |
2848ad0f | 10120 | register tree size; |
8d08fdba | 10121 | |
2848ad0f | 10122 | size = TREE_OPERAND (declarator, 1); |
8d08fdba | 10123 | |
f2e2cbd4 | 10124 | /* VC++ spells a zero-sized array with []. */ |
e8ea7036 MM |
10125 | if (size == NULL_TREE && decl_context == FIELD && ! staticp |
10126 | && ! RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
f2e2cbd4 JM |
10127 | size = integer_zero_node; |
10128 | ||
2848ad0f | 10129 | declarator = TREE_OPERAND (declarator, 0); |
8d08fdba | 10130 | |
2848ad0f | 10131 | type = create_array_type_for_decl (dname, type, size); |
8d08fdba MS |
10132 | ctype = NULL_TREE; |
10133 | } | |
10134 | break; | |
10135 | ||
10136 | case CALL_EXPR: | |
10137 | { | |
10138 | tree arg_types; | |
f376e137 | 10139 | int funcdecl_p; |
43f887f9 | 10140 | tree inner_parms = CALL_DECLARATOR_PARMS (declarator); |
f376e137 | 10141 | tree inner_decl = TREE_OPERAND (declarator, 0); |
8d08fdba MS |
10142 | |
10143 | /* Declaring a function type. | |
10144 | Make sure we have a valid type for the function to return. */ | |
8d08fdba | 10145 | |
91063b51 | 10146 | /* We now know that the TYPE_QUALS don't apply to the |
14ae7e7d | 10147 | decl, but to its return type. */ |
91063b51 | 10148 | type_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
10149 | |
10150 | /* Warn about some types functions can't return. */ | |
10151 | ||
10152 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
10153 | { | |
8251199e | 10154 | error ("`%s' declared as function returning a function", name); |
8d08fdba MS |
10155 | type = integer_type_node; |
10156 | } | |
10157 | if (TREE_CODE (type) == ARRAY_TYPE) | |
10158 | { | |
8251199e | 10159 | error ("`%s' declared as function returning an array", name); |
8d08fdba MS |
10160 | type = integer_type_node; |
10161 | } | |
10162 | ||
f376e137 MS |
10163 | if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF) |
10164 | inner_decl = TREE_OPERAND (inner_decl, 1); | |
10165 | ||
68642fb6 | 10166 | if (inner_decl && TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR) |
386b8a85 JM |
10167 | inner_decl = dname; |
10168 | ||
b7484fbe | 10169 | /* Pick up type qualifiers which should be applied to `this'. */ |
43f887f9 | 10170 | quals = CALL_DECLARATOR_QUALS (declarator); |
b7484fbe | 10171 | |
c11b6f21 | 10172 | /* Pick up the exception specifications. */ |
43f887f9 | 10173 | raises = CALL_DECLARATOR_EXCEPTION_SPEC (declarator); |
c11b6f21 | 10174 | |
f376e137 MS |
10175 | /* Say it's a definition only for the CALL_EXPR |
10176 | closest to the identifier. */ | |
beb53fb8 | 10177 | funcdecl_p |
68642fb6 | 10178 | = inner_decl |
386b8a85 | 10179 | && (TREE_CODE (inner_decl) == IDENTIFIER_NODE |
68642fb6 | 10180 | || TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR |
386b8a85 | 10181 | || TREE_CODE (inner_decl) == BIT_NOT_EXPR); |
68642fb6 | 10182 | |
8d08fdba MS |
10183 | if (ctype == NULL_TREE |
10184 | && decl_context == FIELD | |
f376e137 | 10185 | && funcdecl_p |
8d08fdba MS |
10186 | && (friendp == 0 || dname == current_class_name)) |
10187 | ctype = current_class_type; | |
10188 | ||
51c184be | 10189 | if (ctype && return_type == return_conversion) |
8d08fdba MS |
10190 | TYPE_HAS_CONVERSION (ctype) = 1; |
10191 | if (ctype && constructor_name (ctype) == dname) | |
10192 | { | |
10193 | /* We are within a class's scope. If our declarator name | |
10194 | is the same as the class name, and we are defining | |
10195 | a function, then it is a constructor/destructor, and | |
10196 | therefore returns a void type. */ | |
10197 | ||
10198 | if (flags == DTOR_FLAG) | |
10199 | { | |
10200 | /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may | |
10201 | not be declared const or volatile. A destructor | |
10202 | may not be static. */ | |
10203 | if (staticp == 2) | |
8251199e | 10204 | error ("destructor cannot be static member function"); |
b7484fbe | 10205 | if (quals) |
8d08fdba | 10206 | { |
4f70a846 MM |
10207 | cp_error ("destructors may not be `%s'", |
10208 | IDENTIFIER_POINTER (TREE_VALUE (quals))); | |
10209 | quals = NULL_TREE; | |
8d08fdba MS |
10210 | } |
10211 | if (decl_context == FIELD) | |
10212 | { | |
4dacf5bd KG |
10213 | if (! member_function_or_else (ctype, |
10214 | current_class_type, | |
10215 | flags)) | |
8d08fdba MS |
10216 | return void_type_node; |
10217 | } | |
10218 | } | |
2c73f9f5 | 10219 | else /* It's a constructor. */ |
8d08fdba | 10220 | { |
db5ae43f MS |
10221 | if (explicitp == 1) |
10222 | explicitp = 2; | |
8d08fdba MS |
10223 | /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may |
10224 | not be declared const or volatile. A constructor may | |
10225 | not be virtual. A constructor may not be static. */ | |
10226 | if (staticp == 2) | |
8251199e | 10227 | error ("constructor cannot be static member function"); |
8d08fdba MS |
10228 | if (virtualp) |
10229 | { | |
8251199e | 10230 | pedwarn ("constructors cannot be declared virtual"); |
8d08fdba MS |
10231 | virtualp = 0; |
10232 | } | |
b7484fbe | 10233 | if (quals) |
8d08fdba | 10234 | { |
4f70a846 MM |
10235 | cp_error ("constructors may not be `%s'", |
10236 | IDENTIFIER_POINTER (TREE_VALUE (quals))); | |
10237 | quals = NULL_TREE; | |
8d08fdba | 10238 | } |
8d08fdba | 10239 | { |
51c184be | 10240 | RID_BIT_TYPE tmp_bits; |
fc378698 | 10241 | bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE)); |
51c184be MS |
10242 | RIDBIT_RESET (RID_INLINE, tmp_bits); |
10243 | RIDBIT_RESET (RID_STATIC, tmp_bits); | |
10244 | if (RIDBIT_ANY_SET (tmp_bits)) | |
8251199e | 10245 | error ("return value type specifier for constructor ignored"); |
8d08fdba | 10246 | } |
f30432d7 | 10247 | type = build_pointer_type (ctype); |
6eabb241 | 10248 | if (decl_context == FIELD) |
8d08fdba | 10249 | { |
4dacf5bd KG |
10250 | if (! member_function_or_else (ctype, |
10251 | current_class_type, | |
10252 | flags)) | |
8d08fdba MS |
10253 | return void_type_node; |
10254 | TYPE_HAS_CONSTRUCTOR (ctype) = 1; | |
10255 | if (return_type != return_ctor) | |
10256 | return NULL_TREE; | |
10257 | } | |
10258 | } | |
10259 | if (decl_context == FIELD) | |
10260 | staticp = 0; | |
10261 | } | |
b7484fbe | 10262 | else if (friendp) |
8d08fdba | 10263 | { |
b7484fbe | 10264 | if (initialized) |
8251199e | 10265 | error ("can't initialize friend function `%s'", name); |
b7484fbe MS |
10266 | if (virtualp) |
10267 | { | |
10268 | /* Cannot be both friend and virtual. */ | |
8251199e | 10269 | error ("virtual functions cannot be friends"); |
b7484fbe MS |
10270 | RIDBIT_RESET (RID_FRIEND, specbits); |
10271 | friendp = 0; | |
10272 | } | |
28cbf42c | 10273 | if (decl_context == NORMAL) |
8251199e | 10274 | error ("friend declaration not in class definition"); |
28cbf42c | 10275 | if (current_function_decl && funcdef_flag) |
8251199e | 10276 | cp_error ("can't define friend function `%s' in a local class definition", |
28cbf42c | 10277 | name); |
8d08fdba MS |
10278 | } |
10279 | ||
8d08fdba MS |
10280 | /* Construct the function type and go to the next |
10281 | inner layer of declarator. */ | |
10282 | ||
f376e137 | 10283 | declarator = TREE_OPERAND (declarator, 0); |
8d08fdba | 10284 | |
f376e137 MS |
10285 | /* FIXME: This is where default args should be fully |
10286 | processed. */ | |
8d08fdba | 10287 | |
f376e137 | 10288 | arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0); |
8d08fdba | 10289 | |
4f70a846 | 10290 | if (declarator && flags == DTOR_FLAG) |
8d08fdba | 10291 | { |
4f70a846 MM |
10292 | /* A destructor declared in the body of a class will |
10293 | be represented as a BIT_NOT_EXPR. But, we just | |
10294 | want the underlying IDENTIFIER. */ | |
8d08fdba | 10295 | if (TREE_CODE (declarator) == BIT_NOT_EXPR) |
4f70a846 | 10296 | declarator = TREE_OPERAND (declarator, 0); |
68642fb6 | 10297 | |
4f70a846 MM |
10298 | if (strict_prototype == 0 && arg_types == NULL_TREE) |
10299 | arg_types = void_list_node; | |
10300 | else if (arg_types == NULL_TREE | |
10301 | || arg_types != void_list_node) | |
8d08fdba | 10302 | { |
4f70a846 MM |
10303 | cp_error ("destructors may not have parameters"); |
10304 | arg_types = void_list_node; | |
10305 | last_function_parms = NULL_TREE; | |
8d08fdba MS |
10306 | } |
10307 | } | |
10308 | ||
d22c8596 | 10309 | /* ANSI says that `const int foo ();' |
8d08fdba | 10310 | does not make the function foo const. */ |
d22c8596 | 10311 | type = build_function_type (type, arg_types); |
42976354 BK |
10312 | |
10313 | { | |
10314 | tree t; | |
10315 | for (t = arg_types; t; t = TREE_CHAIN (t)) | |
10316 | if (TREE_PURPOSE (t) | |
10317 | && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG) | |
10318 | { | |
10319 | add_defarg_fn (type); | |
10320 | break; | |
10321 | } | |
10322 | } | |
8d08fdba MS |
10323 | } |
10324 | break; | |
10325 | ||
10326 | case ADDR_EXPR: | |
10327 | case INDIRECT_REF: | |
10328 | /* Filter out pointers-to-references and references-to-references. | |
10329 | We can get these if a TYPE_DECL is used. */ | |
10330 | ||
10331 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
10332 | { | |
8251199e | 10333 | error ("cannot declare %s to references", |
8d08fdba MS |
10334 | TREE_CODE (declarator) == ADDR_EXPR |
10335 | ? "references" : "pointers"); | |
10336 | declarator = TREE_OPERAND (declarator, 0); | |
10337 | continue; | |
10338 | } | |
10339 | ||
a5894242 MS |
10340 | if (TREE_CODE (type) == OFFSET_TYPE |
10341 | && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE | |
10342 | || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE)) | |
10343 | { | |
8251199e | 10344 | cp_error ("cannot declare pointer to `%#T' member", |
a5894242 MS |
10345 | TREE_TYPE (type)); |
10346 | type = TREE_TYPE (type); | |
10347 | } | |
10348 | ||
61a127b3 MM |
10349 | /* Merge any constancy or volatility into the target type |
10350 | for the pointer. */ | |
10351 | ||
91063b51 MM |
10352 | /* We now know that the TYPE_QUALS don't apply to the decl, |
10353 | but to the target of the pointer. */ | |
10354 | type_quals = TYPE_UNQUALIFIED; | |
8d08fdba | 10355 | |
6eabb241 | 10356 | if (TREE_CODE (declarator) == ADDR_EXPR) |
8d08fdba | 10357 | { |
69851283 MM |
10358 | if (TREE_CODE (type) == VOID_TYPE) |
10359 | error ("invalid type: `void &'"); | |
8d08fdba | 10360 | else |
69851283 | 10361 | type = build_reference_type (type); |
8d08fdba MS |
10362 | } |
10363 | else if (TREE_CODE (type) == METHOD_TYPE) | |
d8f8dca1 | 10364 | type = build_ptrmemfunc_type (build_pointer_type (type)); |
8d08fdba MS |
10365 | else |
10366 | type = build_pointer_type (type); | |
10367 | ||
10368 | /* Process a list of type modifier keywords (such as | |
10369 | const or volatile) that were given inside the `*' or `&'. */ | |
10370 | ||
10371 | if (TREE_TYPE (declarator)) | |
10372 | { | |
10373 | register tree typemodlist; | |
10374 | int erred = 0; | |
91063b51 MM |
10375 | |
10376 | constp = 0; | |
10377 | volatilep = 0; | |
10378 | restrictp = 0; | |
8d08fdba MS |
10379 | for (typemodlist = TREE_TYPE (declarator); typemodlist; |
10380 | typemodlist = TREE_CHAIN (typemodlist)) | |
10381 | { | |
91063b51 MM |
10382 | tree qualifier = TREE_VALUE (typemodlist); |
10383 | ||
10384 | if (qualifier == ridpointers[(int) RID_CONST]) | |
8d08fdba | 10385 | constp++; |
91063b51 | 10386 | else if (qualifier == ridpointers[(int) RID_VOLATILE]) |
8d08fdba | 10387 | volatilep++; |
91063b51 MM |
10388 | else if (qualifier == ridpointers[(int) RID_RESTRICT]) |
10389 | restrictp++; | |
8d08fdba MS |
10390 | else if (!erred) |
10391 | { | |
10392 | erred = 1; | |
91063b51 | 10393 | error ("invalid type modifier within pointer declarator"); |
8d08fdba MS |
10394 | } |
10395 | } | |
10396 | if (constp > 1) | |
8251199e | 10397 | pedwarn ("duplicate `const'"); |
8d08fdba | 10398 | if (volatilep > 1) |
8251199e | 10399 | pedwarn ("duplicate `volatile'"); |
91063b51 MM |
10400 | if (restrictp > 1) |
10401 | pedwarn ("duplicate `restrict'"); | |
10402 | ||
10403 | type_quals = ((constp ? TYPE_QUAL_CONST : 0) | |
10404 | | (restrictp ? TYPE_QUAL_RESTRICT : 0) | |
10405 | | (volatilep ? TYPE_QUAL_VOLATILE : 0)); | |
a0a33927 MS |
10406 | if (TREE_CODE (declarator) == ADDR_EXPR |
10407 | && (constp || volatilep)) | |
10408 | { | |
10409 | if (constp) | |
8251199e | 10410 | pedwarn ("discarding `const' applied to a reference"); |
a0a33927 | 10411 | if (volatilep) |
8251199e | 10412 | pedwarn ("discarding `volatile' applied to a reference"); |
91063b51 | 10413 | type_quals &= ~(TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE); |
a0a33927 | 10414 | } |
91063b51 | 10415 | type = cp_build_qualified_type (type, type_quals); |
8d08fdba MS |
10416 | } |
10417 | declarator = TREE_OPERAND (declarator, 0); | |
10418 | ctype = NULL_TREE; | |
10419 | break; | |
10420 | ||
10421 | case SCOPE_REF: | |
10422 | { | |
10423 | /* We have converted type names to NULL_TREE if the | |
10424 | name was bogus, or to a _TYPE node, if not. | |
10425 | ||
10426 | The variable CTYPE holds the type we will ultimately | |
10427 | resolve to. The code here just needs to build | |
10428 | up appropriate member types. */ | |
10429 | tree sname = TREE_OPERAND (declarator, 1); | |
386b8a85 JM |
10430 | tree t; |
10431 | ||
8d08fdba MS |
10432 | /* Destructors can have their visibilities changed as well. */ |
10433 | if (TREE_CODE (sname) == BIT_NOT_EXPR) | |
10434 | sname = TREE_OPERAND (sname, 0); | |
10435 | ||
10436 | if (TREE_COMPLEXITY (declarator) == 0) | |
10437 | /* This needs to be here, in case we are called | |
10438 | multiple times. */ ; | |
9a68c51f JM |
10439 | else if (TREE_COMPLEXITY (declarator) == -1) |
10440 | /* Namespace member. */ | |
10441 | pop_decl_namespace (); | |
8d08fdba | 10442 | else if (friendp && (TREE_COMPLEXITY (declarator) < 2)) |
2c73f9f5 | 10443 | /* Don't fall out into global scope. Hides real bug? --eichin */ ; |
5566b478 MS |
10444 | else if (! IS_AGGR_TYPE_CODE |
10445 | (TREE_CODE (TREE_OPERAND (declarator, 0)))) | |
10446 | ; | |
8d08fdba MS |
10447 | else if (TREE_COMPLEXITY (declarator) == current_class_depth) |
10448 | { | |
9a3b49ac MS |
10449 | /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq |
10450 | that refer to ctype. They couldn't be resolved earlier | |
10451 | because we hadn't pushed into the class yet. | |
10452 | Example: resolve 'B<T>::type' in | |
10453 | 'B<typename B<T>::type> B<T>::f () { }'. */ | |
10454 | if (current_template_parms | |
10455 | && uses_template_parms (type) | |
10456 | && uses_template_parms (current_class_type)) | |
10457 | { | |
10458 | tree args = current_template_args (); | |
4393e105 | 10459 | type = tsubst (type, args, /*complain=*/1, NULL_TREE); |
9a3b49ac MS |
10460 | } |
10461 | ||
a28e3c7f MS |
10462 | /* This pop_nested_class corresponds to the |
10463 | push_nested_class used to push into class scope for | |
10464 | parsing the argument list of a function decl, in | |
10465 | qualified_id. */ | |
b74a0560 | 10466 | pop_nested_class (); |
8d08fdba MS |
10467 | TREE_COMPLEXITY (declarator) = current_class_depth; |
10468 | } | |
10469 | else | |
10470 | my_friendly_abort (16); | |
10471 | ||
10472 | if (TREE_OPERAND (declarator, 0) == NULL_TREE) | |
10473 | { | |
10474 | /* We had a reference to a global decl, or | |
10475 | perhaps we were given a non-aggregate typedef, | |
10476 | in which case we cleared this out, and should just | |
10477 | keep going as though it wasn't there. */ | |
10478 | declarator = sname; | |
10479 | continue; | |
10480 | } | |
10481 | ctype = TREE_OPERAND (declarator, 0); | |
10482 | ||
386b8a85 | 10483 | t = ctype; |
68642fb6 | 10484 | while (t != NULL_TREE && CLASS_TYPE_P (t)) |
386b8a85 | 10485 | { |
75650646 MM |
10486 | if (CLASSTYPE_TEMPLATE_INFO (t) && |
10487 | !CLASSTYPE_TEMPLATE_SPECIALIZATION (t)) | |
386b8a85 JM |
10488 | template_count += 1; |
10489 | t = TYPE_MAIN_DECL (t); | |
10490 | if (DECL_LANG_SPECIFIC (t)) | |
10491 | t = DECL_CLASS_CONTEXT (t); | |
10492 | else | |
10493 | t = NULL_TREE; | |
10494 | } | |
10495 | ||
8d08fdba MS |
10496 | if (sname == NULL_TREE) |
10497 | goto done_scoping; | |
10498 | ||
10499 | if (TREE_CODE (sname) == IDENTIFIER_NODE) | |
10500 | { | |
10501 | /* This is the `standard' use of the scoping operator: | |
10502 | basetype :: member . */ | |
10503 | ||
db5ae43f | 10504 | if (ctype == current_class_type) |
28cbf42c MS |
10505 | { |
10506 | /* class A { | |
10507 | void A::f (); | |
10508 | }; | |
10509 | ||
10510 | Is this ill-formed? */ | |
10511 | ||
10512 | if (pedantic) | |
8251199e | 10513 | cp_pedwarn ("extra qualification `%T::' on member `%s' ignored", |
28cbf42c MS |
10514 | ctype, name); |
10515 | } | |
db5ae43f | 10516 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
8d08fdba MS |
10517 | { |
10518 | if (current_class_type == NULL_TREE | |
8d08fdba | 10519 | || friendp) |
14ae7e7d JM |
10520 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
10521 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
10522 | else |
10523 | { | |
8251199e | 10524 | cp_error ("cannot declare member function `%T::%s' within `%T'", |
a3203465 | 10525 | ctype, name, current_class_type); |
8d08fdba MS |
10526 | return void_type_node; |
10527 | } | |
10528 | } | |
5566b478 MS |
10529 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits) |
10530 | || TYPE_SIZE (complete_type (ctype)) != NULL_TREE) | |
8d08fdba | 10531 | { |
2c73f9f5 | 10532 | /* Have to move this code elsewhere in this function. |
db5ae43f MS |
10533 | this code is used for i.e., typedef int A::M; M *pm; |
10534 | ||
10535 | It is? How? jason 10/2/94 */ | |
8d08fdba | 10536 | |
8d08fdba MS |
10537 | if (current_class_type) |
10538 | { | |
8251199e | 10539 | cp_error ("cannot declare member `%T::%s' within `%T'", |
db5ae43f MS |
10540 | ctype, name, current_class_type); |
10541 | return void_type_node; | |
8d08fdba MS |
10542 | } |
10543 | type = build_offset_type (ctype, type); | |
10544 | } | |
10545 | else if (uses_template_parms (ctype)) | |
10546 | { | |
8d08fdba | 10547 | if (TREE_CODE (type) == FUNCTION_TYPE) |
beb53fb8 | 10548 | type |
14ae7e7d | 10549 | = build_cplus_method_type (ctype, TREE_TYPE (type), |
beb53fb8 | 10550 | TYPE_ARG_TYPES (type)); |
8d08fdba MS |
10551 | } |
10552 | else | |
10553 | { | |
8251199e | 10554 | cp_error ("structure `%T' not yet defined", ctype); |
8d08fdba MS |
10555 | return error_mark_node; |
10556 | } | |
10557 | ||
10558 | declarator = sname; | |
10559 | } | |
8d08fdba MS |
10560 | else if (TREE_CODE (sname) == SCOPE_REF) |
10561 | my_friendly_abort (17); | |
10562 | else | |
10563 | { | |
10564 | done_scoping: | |
10565 | declarator = TREE_OPERAND (declarator, 1); | |
10566 | if (declarator && TREE_CODE (declarator) == CALL_EXPR) | |
10567 | /* In this case, we will deal with it later. */ | |
10568 | ; | |
10569 | else | |
10570 | { | |
10571 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
14ae7e7d JM |
10572 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
10573 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
10574 | else |
10575 | type = build_offset_type (ctype, type); | |
10576 | } | |
10577 | } | |
10578 | } | |
10579 | break; | |
10580 | ||
10581 | case BIT_NOT_EXPR: | |
10582 | declarator = TREE_OPERAND (declarator, 0); | |
10583 | break; | |
10584 | ||
8d08fdba MS |
10585 | case RECORD_TYPE: |
10586 | case UNION_TYPE: | |
10587 | case ENUMERAL_TYPE: | |
10588 | declarator = NULL_TREE; | |
10589 | break; | |
10590 | ||
10591 | case ERROR_MARK: | |
10592 | declarator = NULL_TREE; | |
10593 | break; | |
10594 | ||
10595 | default: | |
10596 | my_friendly_abort (158); | |
10597 | } | |
10598 | } | |
10599 | ||
1eab9b56 JM |
10600 | /* See the comment for the TREE_LIST case, above. */ |
10601 | if (inner_attrs) | |
10602 | { | |
10603 | if (! ignore_attrs) | |
10604 | decl_attributes (type, inner_attrs, NULL_TREE); | |
10605 | else if (attrlist) | |
10606 | TREE_VALUE (attrlist) = chainon (inner_attrs, TREE_VALUE (attrlist)); | |
10607 | else | |
10608 | attrlist = build_decl_list (NULL_TREE, inner_attrs); | |
10609 | } | |
10610 | ||
419c6212 JM |
10611 | /* Now TYPE has the actual type. */ |
10612 | ||
34fc957d | 10613 | if (explicitp == 1 || (explicitp && friendp)) |
db5ae43f | 10614 | { |
34fc957d NS |
10615 | /* [dcl.fct.spec] The explicit specifier shall only be used in |
10616 | declarations of constructors within a class definition. */ | |
10617 | error ("only declarations of constructors can be `explicit'"); | |
db5ae43f MS |
10618 | explicitp = 0; |
10619 | } | |
10620 | ||
f30432d7 MS |
10621 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) |
10622 | { | |
34fc957d NS |
10623 | if (current_class_name == NULL_TREE || decl_context == PARM || friendp) |
10624 | { | |
10625 | error ("non-member `%s' cannot be declared `mutable'", name); | |
10626 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
10627 | } | |
10628 | else if (decl_context == TYPENAME || RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
f30432d7 | 10629 | { |
34fc957d | 10630 | error ("non-object member `%s' cannot be declared `mutable'", name); |
f30432d7 MS |
10631 | RIDBIT_RESET (RID_MUTABLE, specbits); |
10632 | } | |
34fc957d NS |
10633 | else if (TREE_CODE (type) == FUNCTION_TYPE |
10634 | || TREE_CODE (type) == METHOD_TYPE) | |
10635 | { | |
10636 | error ("function `%s' cannot be declared `mutable'", name); | |
10637 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
10638 | } | |
f30432d7 MS |
10639 | else if (staticp) |
10640 | { | |
8251199e | 10641 | error ("static `%s' cannot be declared `mutable'", name); |
f30432d7 MS |
10642 | RIDBIT_RESET (RID_MUTABLE, specbits); |
10643 | } | |
34fc957d NS |
10644 | else if (type_quals & TYPE_QUAL_CONST) |
10645 | { | |
10646 | error ("const `%s' cannot be declared `mutable'", name); | |
10647 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
10648 | } | |
f30432d7 MS |
10649 | } |
10650 | ||
efe38fab JM |
10651 | if (declarator == NULL_TREE |
10652 | || TREE_CODE (declarator) == IDENTIFIER_NODE | |
10653 | || (TREE_CODE (declarator) == TEMPLATE_ID_EXPR | |
10654 | && (TREE_CODE (type) == FUNCTION_TYPE | |
10655 | || TREE_CODE (type) == METHOD_TYPE))) | |
10656 | /* OK */; | |
10657 | else if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR) | |
10658 | { | |
10659 | cp_error ("template-id `%D' used as a declarator", declarator); | |
10660 | declarator = dname; | |
10661 | } | |
10662 | else | |
419c6212 | 10663 | /* Unexpected declarator format. */ |
efe38fab JM |
10664 | my_friendly_abort (990210); |
10665 | ||
419c6212 JM |
10666 | /* If this is declaring a typedef name, return a TYPE_DECL. */ |
10667 | ||
fc378698 | 10668 | if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME) |
8d08fdba MS |
10669 | { |
10670 | tree decl; | |
10671 | ||
10672 | /* Note that the grammar rejects storage classes | |
10673 | in typenames, fields or parameters. */ | |
eff71ab0 PB |
10674 | if (current_lang_name == lang_name_java) |
10675 | TYPE_FOR_JAVA (type) = 1; | |
8d08fdba | 10676 | |
d2e5ee5c MS |
10677 | if (decl_context == FIELD) |
10678 | { | |
094fe153 | 10679 | if (declarator == constructor_name (current_class_type)) |
8251199e | 10680 | cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class", |
d2e5ee5c MS |
10681 | declarator); |
10682 | decl = build_lang_decl (TYPE_DECL, declarator, type); | |
d2e5ee5c MS |
10683 | } |
10684 | else | |
7fb4a8f7 JM |
10685 | { |
10686 | /* Make sure this typedef lives as long as its type, | |
10687 | since it might be used as a template parameter. */ | |
9188c363 | 10688 | if (processing_template_decl) |
b0d06515 | 10689 | decl = build_lang_decl (TYPE_DECL, declarator, type); |
9188c363 MM |
10690 | else |
10691 | decl = build_decl (TYPE_DECL, declarator, type); | |
7fb4a8f7 | 10692 | } |
d2e5ee5c | 10693 | |
9188c363 MM |
10694 | /* If the user declares "typedef struct {...} foo" then the |
10695 | struct will have an anonymous name. Fill that name in now. | |
10696 | Nothing can refer to it, so nothing needs know about the name | |
10697 | change. */ | |
8d08fdba MS |
10698 | if (type != error_mark_node |
10699 | && TYPE_NAME (type) | |
10700 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
b537d120 MM |
10701 | && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)) |
10702 | && CP_TYPE_QUALS (type) == TYPE_UNQUALIFIED) | |
8d08fdba | 10703 | { |
dcd08efc JM |
10704 | tree oldname = TYPE_NAME (type); |
10705 | tree t; | |
10706 | ||
2c73f9f5 | 10707 | /* Replace the anonymous name with the real name everywhere. */ |
8d08fdba | 10708 | lookup_tag_reverse (type, declarator); |
dcd08efc JM |
10709 | for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) |
10710 | if (TYPE_NAME (t) == oldname) | |
10711 | TYPE_NAME (t) = decl; | |
8d08fdba MS |
10712 | |
10713 | if (TYPE_LANG_SPECIFIC (type)) | |
10714 | TYPE_WAS_ANONYMOUS (type) = 1; | |
10715 | ||
33964bf4 MM |
10716 | /* If this is a typedef within a template class, the nested |
10717 | type is a (non-primary) template. The name for the | |
10718 | template needs updating as well. */ | |
10719 | if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type)) | |
68642fb6 | 10720 | DECL_NAME (CLASSTYPE_TI_TEMPLATE (type)) |
33964bf4 MM |
10721 | = TYPE_IDENTIFIER (type); |
10722 | ||
68642fb6 | 10723 | /* XXX Temporarily set the scope. |
2c73f9f5 ML |
10724 | When returning, start_decl expects it as NULL_TREE, |
10725 | and will then then set it using pushdecl. */ | |
10726 | my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 980404); | |
10727 | if (current_class_type) | |
10728 | DECL_CONTEXT (decl) = current_class_type; | |
10729 | else | |
cb0dbb9a | 10730 | DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace); |
2c73f9f5 | 10731 | |
d2e5ee5c MS |
10732 | DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl); |
10733 | DECL_ASSEMBLER_NAME (decl) | |
10734 | = get_identifier (build_overload_name (type, 1, 1)); | |
2c73f9f5 | 10735 | DECL_CONTEXT (decl) = NULL_TREE; |
50a6dbd7 JM |
10736 | |
10737 | /* FIXME remangle member functions; member functions of a | |
10738 | type with external linkage have external linkage. */ | |
fc378698 | 10739 | } |
fc378698 | 10740 | |
8d08fdba MS |
10741 | if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE) |
10742 | { | |
8251199e | 10743 | cp_error_at ("typedef name may not be class-qualified", decl); |
a3203465 | 10744 | return NULL_TREE; |
8d08fdba MS |
10745 | } |
10746 | else if (quals) | |
10747 | { | |
10748 | if (ctype == NULL_TREE) | |
10749 | { | |
10750 | if (TREE_CODE (type) != METHOD_TYPE) | |
8251199e | 10751 | cp_error_at ("invalid type qualifier for non-method type", decl); |
8d08fdba MS |
10752 | else |
10753 | ctype = TYPE_METHOD_BASETYPE (type); | |
10754 | } | |
10755 | if (ctype != NULL_TREE) | |
10756 | grok_method_quals (ctype, decl, quals); | |
10757 | } | |
10758 | ||
10759 | if (RIDBIT_SETP (RID_SIGNED, specbits) | |
10760 | || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))) | |
10761 | C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1; | |
10762 | ||
c91a56d2 MS |
10763 | bad_specifiers (decl, "type", virtualp, quals != NULL_TREE, |
10764 | inlinep, friendp, raises != NULL_TREE); | |
10765 | ||
10766 | if (initialized) | |
8251199e | 10767 | error ("typedef declaration includes an initializer"); |
c91a56d2 | 10768 | |
8d08fdba MS |
10769 | return decl; |
10770 | } | |
10771 | ||
10772 | /* Detect the case of an array type of unspecified size | |
10773 | which came, as such, direct from a typedef name. | |
10774 | We must copy the type, so that each identifier gets | |
10775 | a distinct type, so that each identifier's size can be | |
10776 | controlled separately by its own initializer. */ | |
10777 | ||
10778 | if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE | |
10779 | && TYPE_DOMAIN (type) == NULL_TREE) | |
10780 | { | |
10781 | type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type)); | |
10782 | } | |
10783 | ||
10784 | /* If this is a type name (such as, in a cast or sizeof), | |
10785 | compute the type and return it now. */ | |
10786 | ||
10787 | if (decl_context == TYPENAME) | |
10788 | { | |
10789 | /* Note that the grammar rejects storage classes | |
10790 | in typenames, fields or parameters. */ | |
91063b51 | 10791 | if (type_quals != TYPE_UNQUALIFIED) |
6eabb241 | 10792 | type_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
10793 | |
10794 | /* Special case: "friend class foo" looks like a TYPENAME context. */ | |
10795 | if (friendp) | |
10796 | { | |
91063b51 | 10797 | if (type_quals != TYPE_UNQUALIFIED) |
b7484fbe | 10798 | { |
91063b51 MM |
10799 | cp_error ("type qualifiers specified for friend class declaration"); |
10800 | type_quals = TYPE_UNQUALIFIED; | |
b7484fbe MS |
10801 | } |
10802 | if (inlinep) | |
10803 | { | |
8251199e | 10804 | cp_error ("`inline' specified for friend class declaration"); |
b7484fbe MS |
10805 | inlinep = 0; |
10806 | } | |
10807 | ||
10808 | /* Only try to do this stuff if we didn't already give up. */ | |
10809 | if (type != integer_type_node) | |
10810 | { | |
10811 | /* A friendly class? */ | |
10812 | if (current_class_type) | |
10813 | make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type)); | |
10814 | else | |
8251199e | 10815 | error ("trying to make class `%s' a friend of global scope", |
b7484fbe MS |
10816 | TYPE_NAME_STRING (type)); |
10817 | type = void_type_node; | |
10818 | } | |
8d08fdba MS |
10819 | } |
10820 | else if (quals) | |
10821 | { | |
8d08fdba | 10822 | tree dummy = build_decl (TYPE_DECL, declarator, type); |
8d08fdba MS |
10823 | if (ctype == NULL_TREE) |
10824 | { | |
10825 | my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159); | |
10826 | ctype = TYPE_METHOD_BASETYPE (type); | |
10827 | } | |
10828 | grok_method_quals (ctype, dummy, quals); | |
10829 | type = TREE_TYPE (dummy); | |
10830 | } | |
10831 | ||
10832 | return type; | |
10833 | } | |
10834 | else if (declarator == NULL_TREE && decl_context != PARM | |
db5ae43f | 10835 | && decl_context != CATCHPARM |
8d08fdba MS |
10836 | && TREE_CODE (type) != UNION_TYPE |
10837 | && ! bitfield) | |
10838 | { | |
8251199e | 10839 | cp_error ("abstract declarator `%T' used as declaration", type); |
8d08fdba MS |
10840 | declarator = make_anon_name (); |
10841 | } | |
10842 | ||
10843 | /* `void' at top level (not within pointer) | |
10844 | is allowed only in typedefs or type names. | |
10845 | We don't complain about parms either, but that is because | |
10846 | a better error message can be made later. */ | |
10847 | ||
a1774733 | 10848 | if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM) |
8d08fdba | 10849 | { |
b7484fbe | 10850 | if (! declarator) |
8251199e | 10851 | error ("unnamed variable or field declared void"); |
b7484fbe | 10852 | else if (TREE_CODE (declarator) == IDENTIFIER_NODE) |
8d08fdba MS |
10853 | { |
10854 | if (IDENTIFIER_OPNAME_P (declarator)) | |
8d08fdba | 10855 | my_friendly_abort (356); |
8d08fdba | 10856 | else |
8251199e | 10857 | error ("variable or field `%s' declared void", name); |
8d08fdba MS |
10858 | } |
10859 | else | |
8251199e | 10860 | error ("variable or field declared void"); |
8d08fdba MS |
10861 | type = integer_type_node; |
10862 | } | |
10863 | ||
10864 | /* Now create the decl, which may be a VAR_DECL, a PARM_DECL | |
10865 | or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */ | |
10866 | ||
14ae7e7d JM |
10867 | if (decl_context == PARM || decl_context == CATCHPARM) |
10868 | { | |
10869 | if (ctype || in_namespace) | |
10870 | error ("cannot use `::' in parameter declaration"); | |
10871 | ||
10872 | /* A parameter declared as an array of T is really a pointer to T. | |
10873 | One declared as a function is really a pointer to a function. | |
10874 | One declared as a member is really a pointer to member. */ | |
10875 | ||
10876 | if (TREE_CODE (type) == ARRAY_TYPE) | |
10877 | { | |
10878 | /* Transfer const-ness of array into that of type pointed to. */ | |
10879 | type = build_pointer_type (TREE_TYPE (type)); | |
91063b51 | 10880 | type_quals = TYPE_UNQUALIFIED; |
14ae7e7d JM |
10881 | } |
10882 | else if (TREE_CODE (type) == FUNCTION_TYPE) | |
10883 | type = build_pointer_type (type); | |
10884 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
10885 | type = build_pointer_type (type); | |
10886 | else if (TREE_CODE (type) == VOID_TYPE && declarator) | |
10887 | { | |
10888 | error ("declaration of `%s' as void", name); | |
10889 | return NULL_TREE; | |
10890 | } | |
10891 | } | |
68642fb6 | 10892 | |
8d08fdba MS |
10893 | { |
10894 | register tree decl; | |
10895 | ||
10896 | if (decl_context == PARM) | |
10897 | { | |
ff350acd | 10898 | decl = build_decl (PARM_DECL, declarator, type); |
8d08fdba MS |
10899 | |
10900 | bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE, | |
10901 | inlinep, friendp, raises != NULL_TREE); | |
8d08fdba MS |
10902 | |
10903 | /* Compute the type actually passed in the parmlist, | |
10904 | for the case where there is no prototype. | |
10905 | (For example, shorts and chars are passed as ints.) | |
10906 | When there is a prototype, this is overridden later. */ | |
10907 | ||
39211cd5 | 10908 | DECL_ARG_TYPE (decl) = type_promotes_to (type); |
8d08fdba MS |
10909 | } |
10910 | else if (decl_context == FIELD) | |
10911 | { | |
10912 | if (type == error_mark_node) | |
10913 | { | |
10914 | /* Happens when declaring arrays of sizes which | |
10915 | are error_mark_node, for example. */ | |
10916 | decl = NULL_TREE; | |
10917 | } | |
997a088c | 10918 | else if (in_namespace && !friendp) |
05008fb9 MM |
10919 | { |
10920 | /* Something like struct S { int N::j; }; */ | |
8251199e | 10921 | cp_error ("invalid use of `::'"); |
05008fb9 MM |
10922 | decl = NULL_TREE; |
10923 | } | |
8d08fdba MS |
10924 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
10925 | { | |
10926 | int publicp = 0; | |
e1467ff2 | 10927 | tree function_context; |
8d08fdba | 10928 | |
72b7eeff MS |
10929 | /* We catch the others as conflicts with the builtin |
10930 | typedefs. */ | |
10931 | if (friendp && declarator == ridpointers[(int) RID_SIGNED]) | |
10932 | { | |
8251199e | 10933 | cp_error ("function `%D' cannot be declared friend", |
72b7eeff MS |
10934 | declarator); |
10935 | friendp = 0; | |
10936 | } | |
10937 | ||
8d08fdba MS |
10938 | if (friendp == 0) |
10939 | { | |
10940 | if (ctype == NULL_TREE) | |
10941 | ctype = current_class_type; | |
10942 | ||
10943 | if (ctype == NULL_TREE) | |
10944 | { | |
8251199e | 10945 | cp_error ("can't make `%D' into a method -- not in a class", |
8d08fdba MS |
10946 | declarator); |
10947 | return void_type_node; | |
10948 | } | |
10949 | ||
10950 | /* ``A union may [ ... ] not [ have ] virtual functions.'' | |
10951 | ARM 9.5 */ | |
10952 | if (virtualp && TREE_CODE (ctype) == UNION_TYPE) | |
10953 | { | |
8251199e | 10954 | cp_error ("function `%D' declared virtual inside a union", |
8d08fdba MS |
10955 | declarator); |
10956 | return void_type_node; | |
10957 | } | |
10958 | ||
10959 | if (declarator == ansi_opname[(int) NEW_EXPR] | |
a28e3c7f MS |
10960 | || declarator == ansi_opname[(int) VEC_NEW_EXPR] |
10961 | || declarator == ansi_opname[(int) DELETE_EXPR] | |
10962 | || declarator == ansi_opname[(int) VEC_DELETE_EXPR]) | |
8d08fdba MS |
10963 | { |
10964 | if (virtualp) | |
10965 | { | |
8251199e | 10966 | cp_error ("`%D' cannot be declared virtual, since it is always static", |
8d08fdba MS |
10967 | declarator); |
10968 | virtualp = 0; | |
10969 | } | |
10970 | } | |
10971 | else if (staticp < 2) | |
14ae7e7d JM |
10972 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
10973 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
10974 | } |
10975 | ||
10976 | /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */ | |
68642fb6 | 10977 | function_context = (ctype != NULL_TREE) ? |
e1467ff2 MM |
10978 | hack_decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE; |
10979 | publicp = (! friendp || ! staticp) | |
10980 | && function_context == NULL_TREE; | |
68642fb6 | 10981 | decl = grokfndecl (ctype, type, |
386b8a85 JM |
10982 | TREE_CODE (declarator) != TEMPLATE_ID_EXPR |
10983 | ? declarator : dname, | |
10984 | declarator, | |
7a8f9fa9 | 10985 | virtualp, flags, quals, raises, |
386b8a85 | 10986 | friendp ? -1 : 0, friendp, publicp, inlinep, |
2c73f9f5 | 10987 | funcdef_flag, template_count, in_namespace); |
20496fa2 | 10988 | if (decl == NULL_TREE) |
3ddfb0e6 | 10989 | return decl; |
6125f3be DE |
10990 | #if 0 |
10991 | /* This clobbers the attrs stored in `decl' from `attrlist'. */ | |
10992 | /* The decl and setting of decl_machine_attr is also turned off. */ | |
71851aaa | 10993 | decl = build_decl_attribute_variant (decl, decl_machine_attr); |
6125f3be | 10994 | #endif |
f0e01782 | 10995 | |
cc804e51 MM |
10996 | /* [class.conv.ctor] |
10997 | ||
10998 | A constructor declared without the function-specifier | |
10999 | explicit that can be called with a single parameter | |
11000 | specifies a conversion from the type of its first | |
11001 | parameter to the type of its class. Such a constructor | |
11002 | is called a converting constructor. */ | |
db5ae43f MS |
11003 | if (explicitp == 2) |
11004 | DECL_NONCONVERTING_P (decl) = 1; | |
cc804e51 MM |
11005 | else if (DECL_CONSTRUCTOR_P (decl)) |
11006 | { | |
11007 | /* The constructor can be called with exactly one | |
11008 | parameter if there is at least one parameter, and | |
11009 | any subsequent parameters have default arguments. | |
11010 | We don't look at the first parameter, which is | |
11011 | really just the `this' parameter for the new | |
11012 | object. */ | |
68642fb6 | 11013 | tree arg_types = |
cc804e51 MM |
11014 | TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl))); |
11015 | ||
11016 | /* Skip the `in_chrg' argument too, if present. */ | |
11017 | if (TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (decl))) | |
11018 | arg_types = TREE_CHAIN (arg_types); | |
11019 | ||
11020 | if (arg_types == void_list_node | |
68642fb6 UD |
11021 | || (arg_types |
11022 | && TREE_CHAIN (arg_types) | |
cc804e51 MM |
11023 | && TREE_CHAIN (arg_types) != void_list_node |
11024 | && !TREE_PURPOSE (TREE_CHAIN (arg_types)))) | |
11025 | DECL_NONCONVERTING_P (decl) = 1; | |
11026 | } | |
8d08fdba MS |
11027 | } |
11028 | else if (TREE_CODE (type) == METHOD_TYPE) | |
11029 | { | |
faae18ab MS |
11030 | /* We only get here for friend declarations of |
11031 | members of other classes. */ | |
8d08fdba MS |
11032 | /* All method decls are public, so tell grokfndecl to set |
11033 | TREE_PUBLIC, also. */ | |
386b8a85 | 11034 | decl = grokfndecl (ctype, type, declarator, declarator, |
7a8f9fa9 | 11035 | virtualp, flags, quals, raises, |
386b8a85 | 11036 | friendp ? -1 : 0, friendp, 1, 0, funcdef_flag, |
2c73f9f5 | 11037 | template_count, in_namespace); |
f0e01782 MS |
11038 | if (decl == NULL_TREE) |
11039 | return NULL_TREE; | |
8d08fdba | 11040 | } |
5566b478 MS |
11041 | else if (!staticp && ! processing_template_decl |
11042 | && TYPE_SIZE (complete_type (type)) == NULL_TREE | |
8d08fdba MS |
11043 | && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0)) |
11044 | { | |
b7484fbe | 11045 | if (declarator) |
8251199e | 11046 | cp_error ("field `%D' has incomplete type", declarator); |
b7484fbe | 11047 | else |
8251199e | 11048 | cp_error ("name `%T' has incomplete type", type); |
8d08fdba MS |
11049 | |
11050 | /* If we're instantiating a template, tell them which | |
11051 | instantiation made the field's type be incomplete. */ | |
11052 | if (current_class_type | |
11053 | && TYPE_NAME (current_class_type) | |
d2e5ee5c | 11054 | && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type)) |
8d08fdba MS |
11055 | && declspecs && TREE_VALUE (declspecs) |
11056 | && TREE_TYPE (TREE_VALUE (declspecs)) == type) | |
8251199e | 11057 | cp_error (" in instantiation of template `%T'", |
db5ae43f MS |
11058 | current_class_type); |
11059 | ||
8d08fdba MS |
11060 | type = error_mark_node; |
11061 | decl = NULL_TREE; | |
11062 | } | |
11063 | else | |
11064 | { | |
11065 | if (friendp) | |
11066 | { | |
8251199e | 11067 | error ("`%s' is neither function nor method; cannot be declared friend", |
8d08fdba MS |
11068 | IDENTIFIER_POINTER (declarator)); |
11069 | friendp = 0; | |
11070 | } | |
11071 | decl = NULL_TREE; | |
11072 | } | |
11073 | ||
11074 | if (friendp) | |
11075 | { | |
11076 | /* Friends are treated specially. */ | |
11077 | if (ctype == current_class_type) | |
8251199e | 11078 | warning ("member functions are implicitly friends of their class"); |
8d08fdba MS |
11079 | else |
11080 | { | |
11081 | tree t = NULL_TREE; | |
11082 | if (decl && DECL_NAME (decl)) | |
36a117a5 MM |
11083 | { |
11084 | if (template_class_depth (current_class_type) == 0) | |
6c30752f | 11085 | { |
68642fb6 UD |
11086 | decl |
11087 | = check_explicit_specialization | |
6c30752f MM |
11088 | (declarator, decl, |
11089 | template_count, 2 * (funcdef_flag != 0) + 4); | |
11090 | if (decl == error_mark_node) | |
11091 | return error_mark_node; | |
11092 | } | |
11093 | ||
36a117a5 | 11094 | t = do_friend (ctype, declarator, decl, |
7a8f9fa9 | 11095 | last_function_parms, attrlist, flags, quals, |
36a117a5 MM |
11096 | funcdef_flag); |
11097 | } | |
8d08fdba MS |
11098 | if (t && funcdef_flag) |
11099 | return t; | |
68642fb6 | 11100 | |
8d08fdba MS |
11101 | return void_type_node; |
11102 | } | |
11103 | } | |
11104 | ||
11105 | /* Structure field. It may not be a function, except for C++ */ | |
11106 | ||
11107 | if (decl == NULL_TREE) | |
11108 | { | |
8d08fdba MS |
11109 | if (initialized) |
11110 | { | |
3ac3d9ea MM |
11111 | if (!staticp) |
11112 | { | |
11113 | /* An attempt is being made to initialize a non-static | |
11114 | member. But, from [class.mem]: | |
68642fb6 | 11115 | |
3ac3d9ea MM |
11116 | 4 A member-declarator can contain a |
11117 | constant-initializer only if it declares a static | |
11118 | member (_class.static_) of integral or enumeration | |
68642fb6 | 11119 | type, see _class.static.data_. |
3ac3d9ea MM |
11120 | |
11121 | This used to be relatively common practice, but | |
11122 | the rest of the compiler does not correctly | |
11123 | handle the initialization unless the member is | |
11124 | static so we make it static below. */ | |
950ad3c3 | 11125 | cp_pedwarn ("ANSI C++ forbids initialization of member `%D'", |
3ac3d9ea | 11126 | declarator); |
8251199e | 11127 | cp_pedwarn ("making `%D' static", declarator); |
3ac3d9ea MM |
11128 | staticp = 1; |
11129 | } | |
11130 | ||
6ba89f8e MM |
11131 | if (uses_template_parms (type)) |
11132 | /* We'll check at instantiation time. */ | |
11133 | ; | |
11134 | else if (check_static_variable_definition (declarator, | |
11135 | type)) | |
11136 | /* If we just return the declaration, crashes | |
11137 | will sometimes occur. We therefore return | |
72a93143 JM |
11138 | void_type_node, as if this was a friend |
11139 | declaration, to cause callers to completely | |
11140 | ignore this declaration. */ | |
6ba89f8e | 11141 | return void_type_node; |
8d08fdba MS |
11142 | } |
11143 | ||
8ebeee52 | 11144 | /* 9.2p13 [class.mem] */ |
4d7614e9 JM |
11145 | if (declarator == constructor_name (current_class_type) |
11146 | /* Divergence from the standard: In extern "C", we | |
11147 | allow non-static data members here, because C does | |
11148 | and /usr/include/netinet/in.h uses that. */ | |
1f901793 | 11149 | && (staticp || ! in_system_header)) |
8ebeee52 JM |
11150 | cp_pedwarn ("ANSI C++ forbids data member `%D' with same name as enclosing class", |
11151 | declarator); | |
11152 | ||
3ac3d9ea | 11153 | if (staticp) |
8d08fdba | 11154 | { |
f18a14bc MM |
11155 | /* C++ allows static class members. All other work |
11156 | for this is done by grokfield. */ | |
4ce3d537 | 11157 | decl = build_lang_decl (VAR_DECL, declarator, type); |
5b605f68 MS |
11158 | TREE_STATIC (decl) = 1; |
11159 | /* In class context, 'static' means public access. */ | |
3ac3d9ea | 11160 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1; |
8d08fdba MS |
11161 | } |
11162 | else | |
11163 | { | |
4ce3d537 | 11164 | decl = build_lang_decl (FIELD_DECL, declarator, type); |
8d08fdba MS |
11165 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) |
11166 | { | |
11167 | DECL_MUTABLE_P (decl) = 1; | |
11168 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
11169 | } | |
11170 | } | |
11171 | ||
11172 | bad_specifiers (decl, "field", virtualp, quals != NULL_TREE, | |
11173 | inlinep, friendp, raises != NULL_TREE); | |
11174 | } | |
11175 | } | |
11176 | else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
11177 | { | |
386b8a85 | 11178 | tree original_name; |
8d08fdba MS |
11179 | int publicp = 0; |
11180 | ||
11181 | if (! declarator) | |
11182 | return NULL_TREE; | |
11183 | ||
386b8a85 JM |
11184 | if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR) |
11185 | original_name = dname; | |
11186 | else | |
11187 | original_name = declarator; | |
11188 | ||
8926095f | 11189 | if (RIDBIT_SETP (RID_AUTO, specbits)) |
8251199e | 11190 | error ("storage class `auto' invalid for function `%s'", name); |
8926095f | 11191 | else if (RIDBIT_SETP (RID_REGISTER, specbits)) |
8251199e | 11192 | error ("storage class `register' invalid for function `%s'", name); |
8d08fdba MS |
11193 | |
11194 | /* Function declaration not at top level. | |
11195 | Storage classes other than `extern' are not allowed | |
11196 | and `extern' makes no difference. */ | |
a9aedbc2 | 11197 | if (! toplevel_bindings_p () |
8926095f MS |
11198 | && (RIDBIT_SETP (RID_STATIC, specbits) |
11199 | || RIDBIT_SETP (RID_INLINE, specbits)) | |
8d08fdba | 11200 | && pedantic) |
8926095f MS |
11201 | { |
11202 | if (RIDBIT_SETP (RID_STATIC, specbits)) | |
8251199e | 11203 | pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name); |
8926095f | 11204 | else |
8251199e | 11205 | pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name); |
8926095f | 11206 | } |
68642fb6 | 11207 | |
8d08fdba MS |
11208 | if (ctype == NULL_TREE) |
11209 | { | |
11210 | if (virtualp) | |
11211 | { | |
8251199e | 11212 | error ("virtual non-class function `%s'", name); |
8d08fdba MS |
11213 | virtualp = 0; |
11214 | } | |
8d08fdba MS |
11215 | } |
11216 | else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2) | |
14ae7e7d JM |
11217 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
11218 | TYPE_ARG_TYPES (type)); | |
8d08fdba | 11219 | |
eb66be0e | 11220 | /* Record presence of `static'. */ |
faae18ab | 11221 | publicp = (ctype != NULL_TREE |
a9aedbc2 | 11222 | || RIDBIT_SETP (RID_EXTERN, specbits) |
eb66be0e | 11223 | || !RIDBIT_SETP (RID_STATIC, specbits)); |
8d08fdba | 11224 | |
386b8a85 | 11225 | decl = grokfndecl (ctype, type, original_name, declarator, |
7a8f9fa9 | 11226 | virtualp, flags, quals, raises, |
75650646 | 11227 | 1, friendp, |
68642fb6 | 11228 | publicp, inlinep, funcdef_flag, |
2c73f9f5 | 11229 | template_count, in_namespace); |
f0e01782 MS |
11230 | if (decl == NULL_TREE) |
11231 | return NULL_TREE; | |
8d08fdba | 11232 | |
8d08fdba MS |
11233 | if (staticp == 1) |
11234 | { | |
11235 | int illegal_static = 0; | |
11236 | ||
11237 | /* Don't allow a static member function in a class, and forbid | |
11238 | declaring main to be static. */ | |
11239 | if (TREE_CODE (type) == METHOD_TYPE) | |
11240 | { | |
8251199e | 11241 | cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl); |
8d08fdba MS |
11242 | illegal_static = 1; |
11243 | } | |
8d08fdba MS |
11244 | else if (current_function_decl) |
11245 | { | |
11246 | /* FIXME need arm citation */ | |
8251199e | 11247 | error ("cannot declare static function inside another function"); |
8d08fdba MS |
11248 | illegal_static = 1; |
11249 | } | |
11250 | ||
11251 | if (illegal_static) | |
11252 | { | |
11253 | staticp = 0; | |
11254 | RIDBIT_RESET (RID_STATIC, specbits); | |
11255 | } | |
11256 | } | |
8d08fdba MS |
11257 | } |
11258 | else | |
11259 | { | |
11260 | /* It's a variable. */ | |
11261 | ||
11262 | /* An uninitialized decl with `extern' is a reference. */ | |
68642fb6 UD |
11263 | decl = grokvardecl (type, declarator, &specbits, |
11264 | initialized, | |
11265 | (type_quals & TYPE_QUAL_CONST) != 0, | |
950ad3c3 | 11266 | in_namespace); |
8d08fdba MS |
11267 | bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE, |
11268 | inlinep, friendp, raises != NULL_TREE); | |
11269 | ||
11270 | if (ctype) | |
11271 | { | |
f0e01782 | 11272 | DECL_CONTEXT (decl) = ctype; |
8d08fdba MS |
11273 | if (staticp == 1) |
11274 | { | |
8251199e | 11275 | cp_pedwarn ("static member `%D' re-declared as static", decl); |
8d08fdba MS |
11276 | staticp = 0; |
11277 | RIDBIT_RESET (RID_STATIC, specbits); | |
11278 | } | |
b7484fbe MS |
11279 | if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl)) |
11280 | { | |
8251199e | 11281 | cp_error ("static member `%D' declared `register'", decl); |
b7484fbe MS |
11282 | RIDBIT_RESET (RID_REGISTER, specbits); |
11283 | } | |
f30432d7 | 11284 | if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic) |
8d08fdba | 11285 | { |
8251199e | 11286 | cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage", |
f30432d7 | 11287 | decl); |
8d08fdba MS |
11288 | RIDBIT_RESET (RID_EXTERN, specbits); |
11289 | } | |
11290 | } | |
11291 | } | |
11292 | ||
34fc957d | 11293 | my_friendly_assert (!RIDBIT_SETP (RID_MUTABLE, specbits), 19990927); |
8d08fdba MS |
11294 | |
11295 | /* Record `register' declaration for warnings on & | |
11296 | and in case doing stupid register allocation. */ | |
11297 | ||
11298 | if (RIDBIT_SETP (RID_REGISTER, specbits)) | |
11299 | DECL_REGISTER (decl) = 1; | |
11300 | ||
8926095f MS |
11301 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
11302 | DECL_THIS_EXTERN (decl) = 1; | |
11303 | ||
faae18ab MS |
11304 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
11305 | DECL_THIS_STATIC (decl) = 1; | |
11306 | ||
adecb3f4 MM |
11307 | /* Record constancy and volatility. There's no need to do this |
11308 | when processing a template; we'll do this for the instantiated | |
11309 | declaration based on the type of DECL. */ | |
11310 | if (!processing_template_decl) | |
11311 | c_apply_type_quals_to_decl (type_quals, decl); | |
8d08fdba MS |
11312 | |
11313 | return decl; | |
11314 | } | |
11315 | } | |
11316 | \f | |
11317 | /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist. | |
11318 | An empty exprlist is a parmlist. An exprlist which | |
11319 | contains only identifiers at the global level | |
11320 | is a parmlist. Otherwise, it is an exprlist. */ | |
e92cc029 | 11321 | |
8d08fdba MS |
11322 | int |
11323 | parmlist_is_exprlist (exprs) | |
11324 | tree exprs; | |
11325 | { | |
11326 | if (exprs == NULL_TREE || TREE_PARMLIST (exprs)) | |
11327 | return 0; | |
11328 | ||
a9aedbc2 | 11329 | if (toplevel_bindings_p ()) |
8d08fdba MS |
11330 | { |
11331 | /* At the global level, if these are all identifiers, | |
11332 | then it is a parmlist. */ | |
11333 | while (exprs) | |
11334 | { | |
11335 | if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE) | |
11336 | return 1; | |
11337 | exprs = TREE_CHAIN (exprs); | |
11338 | } | |
11339 | return 0; | |
11340 | } | |
11341 | return 1; | |
11342 | } | |
11343 | ||
f181d4ae MM |
11344 | /* Subroutine of start_function. Ensure that each of the parameter |
11345 | types (as listed in PARMS) is complete, as is required for a | |
11346 | function definition. */ | |
e92cc029 | 11347 | |
8d08fdba MS |
11348 | static void |
11349 | require_complete_types_for_parms (parms) | |
11350 | tree parms; | |
11351 | { | |
07c88314 | 11352 | for (; parms; parms = TREE_CHAIN (parms)) |
8d08fdba MS |
11353 | { |
11354 | tree type = TREE_TYPE (parms); | |
07c88314 MM |
11355 | |
11356 | /* Try to complete the TYPE. */ | |
11357 | type = complete_type (type); | |
11358 | ||
11359 | if (type == error_mark_node) | |
11360 | continue; | |
11361 | ||
11362 | if (TYPE_SIZE (type) == NULL_TREE) | |
8d08fdba MS |
11363 | { |
11364 | if (DECL_NAME (parms)) | |
8251199e | 11365 | error ("parameter `%s' has incomplete type", |
8d08fdba MS |
11366 | IDENTIFIER_POINTER (DECL_NAME (parms))); |
11367 | else | |
8251199e | 11368 | error ("parameter has incomplete type"); |
8d08fdba MS |
11369 | TREE_TYPE (parms) = error_mark_node; |
11370 | } | |
42f989ff JM |
11371 | else |
11372 | layout_decl (parms, 0); | |
8d08fdba MS |
11373 | } |
11374 | } | |
11375 | ||
46e8c075 | 11376 | /* Returns non-zero if T is a local variable. */ |
297e73d8 | 11377 | |
46e8c075 MM |
11378 | int |
11379 | local_variable_p (t) | |
11380 | tree t; | |
297e73d8 | 11381 | { |
68642fb6 | 11382 | if ((TREE_CODE (t) == VAR_DECL |
297e73d8 MM |
11383 | /* A VAR_DECL with a context that is a _TYPE is a static data |
11384 | member. */ | |
11385 | && !TYPE_P (CP_DECL_CONTEXT (t)) | |
11386 | /* Any other non-local variable must be at namespace scope. */ | |
46e8c075 | 11387 | && !DECL_NAMESPACE_SCOPE_P (t)) |
297e73d8 | 11388 | || (TREE_CODE (t) == PARM_DECL)) |
46e8c075 | 11389 | return 1; |
297e73d8 | 11390 | |
46e8c075 MM |
11391 | return 0; |
11392 | } | |
11393 | ||
11394 | /* Returns non-zero if T is an automatic local variable or a label. | |
11395 | (These are the declarations that need to be remapped when the code | |
11396 | containing them is duplicated.) */ | |
11397 | ||
11398 | int | |
11399 | nonstatic_local_decl_p (t) | |
11400 | tree t; | |
11401 | { | |
11402 | return ((local_variable_p (t) && !TREE_STATIC (t)) | |
11403 | || TREE_CODE (t) == LABEL_DECL | |
11404 | || TREE_CODE (t) == RESULT_DECL); | |
11405 | } | |
11406 | ||
11407 | /* Like local_variable_p, but suitable for use as a tree-walking | |
11408 | function. */ | |
11409 | ||
11410 | static tree | |
11411 | local_variable_p_walkfn (tp, walk_subtrees, data) | |
11412 | tree *tp; | |
11413 | int *walk_subtrees ATTRIBUTE_UNUSED; | |
11414 | void *data ATTRIBUTE_UNUSED; | |
11415 | { | |
68642fb6 | 11416 | return ((local_variable_p (*tp) && !DECL_ARTIFICIAL (*tp)) |
46e8c075 | 11417 | ? *tp : NULL_TREE); |
297e73d8 MM |
11418 | } |
11419 | ||
11420 | /* Check that ARG, which is a default-argument expression for a | |
11421 | parameter DECL, is legal. Returns ARG, or ERROR_MARK_NODE, if | |
11422 | something goes wrong. DECL may also be a _TYPE node, rather than a | |
11423 | DECL, if there is no DECL available. */ | |
11424 | ||
11425 | tree | |
11426 | check_default_argument (decl, arg) | |
11427 | tree decl; | |
11428 | tree arg; | |
11429 | { | |
11430 | tree var; | |
11431 | tree decl_type; | |
11432 | ||
11433 | if (TREE_CODE (arg) == DEFAULT_ARG) | |
11434 | /* We get a DEFAULT_ARG when looking at an in-class declaration | |
11435 | with a default argument. Ignore the argument for now; we'll | |
11436 | deal with it after the class is complete. */ | |
11437 | return arg; | |
11438 | ||
11439 | if (processing_template_decl || uses_template_parms (arg)) | |
11440 | /* We don't do anything checking until instantiation-time. Note | |
11441 | that there may be uninstantiated arguments even for an | |
11442 | instantiated function, since default arguments are not | |
11443 | instantiated until they are needed. */ | |
11444 | return arg; | |
11445 | ||
11446 | if (TYPE_P (decl)) | |
11447 | { | |
11448 | decl_type = decl; | |
11449 | decl = NULL_TREE; | |
11450 | } | |
11451 | else | |
11452 | decl_type = TREE_TYPE (decl); | |
11453 | ||
68642fb6 | 11454 | if (arg == error_mark_node |
297e73d8 MM |
11455 | || decl == error_mark_node |
11456 | || TREE_TYPE (arg) == error_mark_node | |
11457 | || decl_type == error_mark_node) | |
11458 | /* Something already went wrong. There's no need to check | |
11459 | further. */ | |
11460 | return error_mark_node; | |
11461 | ||
11462 | /* [dcl.fct.default] | |
68642fb6 | 11463 | |
297e73d8 MM |
11464 | A default argument expression is implicitly converted to the |
11465 | parameter type. */ | |
11466 | if (!TREE_TYPE (arg) | |
11467 | || !can_convert_arg (decl_type, TREE_TYPE (arg), arg)) | |
11468 | { | |
11469 | if (decl) | |
68642fb6 | 11470 | cp_error ("default argument for `%#D' has type `%T'", |
297e73d8 MM |
11471 | decl, TREE_TYPE (arg)); |
11472 | else | |
8614a1d6 | 11473 | cp_error ("default argument for parameter of type `%T' has type `%T'", |
297e73d8 MM |
11474 | decl_type, TREE_TYPE (arg)); |
11475 | ||
11476 | return error_mark_node; | |
11477 | } | |
11478 | ||
11479 | /* [dcl.fct.default] | |
11480 | ||
11481 | Local variables shall not be used in default argument | |
68642fb6 | 11482 | expressions. |
297e73d8 MM |
11483 | |
11484 | The keyword `this' shall not be used in a default argument of a | |
11485 | member function. */ | |
46e8c075 | 11486 | var = walk_tree (&arg, local_variable_p_walkfn, NULL); |
297e73d8 MM |
11487 | if (var) |
11488 | { | |
11489 | cp_error ("default argument `%E' uses local variable `%D'", | |
11490 | arg, var); | |
11491 | return error_mark_node; | |
11492 | } | |
11493 | ||
11494 | /* All is well. */ | |
11495 | return arg; | |
11496 | } | |
11497 | ||
8d08fdba MS |
11498 | /* Decode the list of parameter types for a function type. |
11499 | Given the list of things declared inside the parens, | |
11500 | return a list of types. | |
11501 | ||
11502 | The list we receive can have three kinds of elements: | |
11503 | an IDENTIFIER_NODE for names given without types, | |
11504 | a TREE_LIST node for arguments given as typespecs or names with typespecs, | |
11505 | or void_type_node, to mark the end of an argument list | |
11506 | when additional arguments are not permitted (... was not used). | |
11507 | ||
11508 | FUNCDEF_FLAG is nonzero for a function definition, 0 for | |
11509 | a mere declaration. A nonempty identifier-list gets an error message | |
11510 | when FUNCDEF_FLAG is zero. | |
11511 | If FUNCDEF_FLAG is 1, then parameter types must be complete. | |
11512 | If FUNCDEF_FLAG is -1, then parameter types may be incomplete. | |
11513 | ||
11514 | If all elements of the input list contain types, | |
11515 | we return a list of the types. | |
11516 | If all elements contain no type (except perhaps a void_type_node | |
11517 | at the end), we return a null list. | |
11518 | If some have types and some do not, it is an error, and we | |
11519 | return a null list. | |
11520 | ||
11521 | Also set last_function_parms to either | |
11522 | a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs. | |
11523 | A list of names is converted to a chain of PARM_DECLs | |
11524 | by store_parm_decls so that ultimately it is always a chain of decls. | |
11525 | ||
11526 | Note that in C++, parameters can take default values. These default | |
11527 | values are in the TREE_PURPOSE field of the TREE_LIST. It is | |
11528 | an error to specify default values which are followed by parameters | |
11529 | that have no default values, or an ELLIPSES. For simplicities sake, | |
11530 | only parameters which are specified with their types can take on | |
11531 | default values. */ | |
11532 | ||
11533 | static tree | |
11534 | grokparms (first_parm, funcdef_flag) | |
11535 | tree first_parm; | |
11536 | int funcdef_flag; | |
11537 | { | |
11538 | tree result = NULL_TREE; | |
11539 | tree decls = NULL_TREE; | |
11540 | ||
11541 | if (first_parm != NULL_TREE | |
11542 | && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE) | |
11543 | { | |
11544 | if (! funcdef_flag) | |
8251199e | 11545 | pedwarn ("parameter names (without types) in function declaration"); |
8d08fdba MS |
11546 | last_function_parms = first_parm; |
11547 | return NULL_TREE; | |
11548 | } | |
11549 | else if (first_parm != NULL_TREE | |
11550 | && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST | |
a1774733 | 11551 | && TREE_CODE (TREE_VALUE (first_parm)) != VOID_TYPE) |
8d08fdba MS |
11552 | my_friendly_abort (145); |
11553 | else | |
11554 | { | |
11555 | /* Types were specified. This is a list of declarators | |
11556 | each represented as a TREE_LIST node. */ | |
11557 | register tree parm, chain; | |
5566b478 | 11558 | int any_init = 0, any_error = 0; |
8d08fdba MS |
11559 | |
11560 | if (first_parm != NULL_TREE) | |
11561 | { | |
11562 | tree last_result = NULL_TREE; | |
11563 | tree last_decl = NULL_TREE; | |
11564 | ||
11565 | for (parm = first_parm; parm != NULL_TREE; parm = chain) | |
11566 | { | |
a703fb38 | 11567 | tree type = NULL_TREE, list_node = parm; |
8d08fdba MS |
11568 | register tree decl = TREE_VALUE (parm); |
11569 | tree init = TREE_PURPOSE (parm); | |
11570 | ||
11571 | chain = TREE_CHAIN (parm); | |
11572 | /* @@ weak defense against parse errors. */ | |
68642fb6 | 11573 | if (TREE_CODE (decl) != VOID_TYPE |
a1774733 | 11574 | && TREE_CODE (decl) != TREE_LIST) |
8d08fdba MS |
11575 | { |
11576 | /* Give various messages as the need arises. */ | |
11577 | if (TREE_CODE (decl) == STRING_CST) | |
8251199e | 11578 | cp_error ("invalid string constant `%E'", decl); |
8d08fdba | 11579 | else if (TREE_CODE (decl) == INTEGER_CST) |
8251199e | 11580 | error ("invalid integer constant in parameter list, did you forget to give parameter name?"); |
8d08fdba MS |
11581 | continue; |
11582 | } | |
11583 | ||
a1774733 | 11584 | if (TREE_CODE (decl) != VOID_TYPE) |
8d08fdba | 11585 | { |
8d08fdba MS |
11586 | decl = grokdeclarator (TREE_VALUE (decl), |
11587 | TREE_PURPOSE (decl), | |
f30432d7 | 11588 | PARM, init != NULL_TREE, |
c11b6f21 | 11589 | NULL_TREE); |
3bfdc719 | 11590 | if (! decl || TREE_TYPE (decl) == error_mark_node) |
8d08fdba | 11591 | continue; |
01240200 MM |
11592 | |
11593 | /* Top-level qualifiers on the parameters are | |
11594 | ignored for function types. */ | |
11595 | type = TYPE_MAIN_VARIANT (TREE_TYPE (decl)); | |
11596 | ||
a1774733 | 11597 | if (TREE_CODE (type) == VOID_TYPE) |
8d08fdba MS |
11598 | decl = void_type_node; |
11599 | else if (TREE_CODE (type) == METHOD_TYPE) | |
11600 | { | |
11601 | if (DECL_NAME (decl)) | |
fc378698 | 11602 | /* Cannot use the decl here because |
8d08fdba | 11603 | we don't have DECL_CONTEXT set up yet. */ |
8251199e | 11604 | cp_error ("parameter `%D' invalidly declared method type", |
fc378698 | 11605 | DECL_NAME (decl)); |
8d08fdba | 11606 | else |
8251199e | 11607 | error ("parameter invalidly declared method type"); |
8d08fdba MS |
11608 | type = build_pointer_type (type); |
11609 | TREE_TYPE (decl) = type; | |
11610 | } | |
11611 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
11612 | { | |
11613 | if (DECL_NAME (decl)) | |
8251199e | 11614 | cp_error ("parameter `%D' invalidly declared offset type", |
fc378698 | 11615 | DECL_NAME (decl)); |
8d08fdba | 11616 | else |
8251199e | 11617 | error ("parameter invalidly declared offset type"); |
8d08fdba MS |
11618 | type = build_pointer_type (type); |
11619 | TREE_TYPE (decl) = type; | |
11620 | } | |
a7a64a77 MM |
11621 | else if (abstract_virtuals_error (decl, type)) |
11622 | any_error = 1; /* Seems like a good idea. */ | |
482b883f JM |
11623 | else if (POINTER_TYPE_P (type)) |
11624 | { | |
11625 | tree t = type; | |
11626 | while (POINTER_TYPE_P (t) | |
11627 | || (TREE_CODE (t) == ARRAY_TYPE | |
11628 | && TYPE_DOMAIN (t) != NULL_TREE)) | |
11629 | t = TREE_TYPE (t); | |
11630 | if (TREE_CODE (t) == ARRAY_TYPE) | |
57af8358 MM |
11631 | cp_error ("parameter type `%T' includes %s to array of unknown bound", |
11632 | type, | |
11633 | TYPE_PTR_P (type) ? "pointer" : "reference"); | |
482b883f | 11634 | } |
8d08fdba MS |
11635 | } |
11636 | ||
a1774733 | 11637 | if (TREE_CODE (decl) == VOID_TYPE) |
8d08fdba MS |
11638 | { |
11639 | if (result == NULL_TREE) | |
11640 | { | |
11641 | result = void_list_node; | |
11642 | last_result = result; | |
11643 | } | |
11644 | else | |
11645 | { | |
11646 | TREE_CHAIN (last_result) = void_list_node; | |
11647 | last_result = void_list_node; | |
11648 | } | |
8d08fdba MS |
11649 | if (chain |
11650 | && (chain != void_list_node || TREE_CHAIN (chain))) | |
8251199e | 11651 | error ("`void' in parameter list must be entire list"); |
8d08fdba MS |
11652 | break; |
11653 | } | |
11654 | ||
11655 | /* Since there is a prototype, args are passed in their own types. */ | |
11656 | DECL_ARG_TYPE (decl) = TREE_TYPE (decl); | |
fa56377d JJ |
11657 | if (PROMOTE_PROTOTYPES |
11658 | && (TREE_CODE (type) == INTEGER_TYPE | |
11659 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
8d08fdba MS |
11660 | && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) |
11661 | DECL_ARG_TYPE (decl) = integer_type_node; | |
297e73d8 | 11662 | if (!any_error && init) |
8d08fdba | 11663 | { |
297e73d8 MM |
11664 | any_init++; |
11665 | init = check_default_argument (decl, init); | |
8d08fdba MS |
11666 | } |
11667 | else | |
11668 | init = NULL_TREE; | |
11669 | ||
11670 | if (decls == NULL_TREE) | |
11671 | { | |
11672 | decls = decl; | |
11673 | last_decl = decls; | |
11674 | } | |
11675 | else | |
11676 | { | |
11677 | TREE_CHAIN (last_decl) = decl; | |
11678 | last_decl = decl; | |
11679 | } | |
5868eb4e | 11680 | list_node = tree_cons (init, type, NULL_TREE); |
8d08fdba MS |
11681 | if (result == NULL_TREE) |
11682 | { | |
11683 | result = list_node; | |
11684 | last_result = result; | |
11685 | } | |
11686 | else | |
11687 | { | |
11688 | TREE_CHAIN (last_result) = list_node; | |
11689 | last_result = list_node; | |
11690 | } | |
11691 | } | |
11692 | if (last_result) | |
11693 | TREE_CHAIN (last_result) = NULL_TREE; | |
11694 | /* If there are no parameters, and the function does not end | |
11695 | with `...', then last_decl will be NULL_TREE. */ | |
11696 | if (last_decl != NULL_TREE) | |
11697 | TREE_CHAIN (last_decl) = NULL_TREE; | |
11698 | } | |
11699 | } | |
11700 | ||
11701 | last_function_parms = decls; | |
11702 | ||
8d08fdba MS |
11703 | return result; |
11704 | } | |
42976354 BK |
11705 | |
11706 | /* Called from the parser to update an element of TYPE_ARG_TYPES for some | |
11707 | FUNCTION_TYPE with the newly parsed version of its default argument, which | |
11708 | was previously digested as text. See snarf_defarg et al in lex.c. */ | |
11709 | ||
11710 | void | |
11711 | replace_defarg (arg, init) | |
11712 | tree arg, init; | |
11713 | { | |
aa5f3bad | 11714 | if (! processing_template_decl |
42976354 | 11715 | && ! can_convert_arg (TREE_VALUE (arg), TREE_TYPE (init), init)) |
8251199e | 11716 | cp_pedwarn ("invalid type `%T' for default argument to `%T'", |
42976354 BK |
11717 | TREE_TYPE (init), TREE_VALUE (arg)); |
11718 | TREE_PURPOSE (arg) = init; | |
11719 | } | |
8d08fdba | 11720 | \f |
c11b6f21 MS |
11721 | int |
11722 | copy_args_p (d) | |
11723 | tree d; | |
11724 | { | |
11725 | tree t = FUNCTION_ARG_CHAIN (d); | |
67437d5b JM |
11726 | if (DECL_CONSTRUCTOR_P (d) |
11727 | && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d))) | |
11728 | t = TREE_CHAIN (t); | |
c11b6f21 MS |
11729 | if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE |
11730 | && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t))) | |
11731 | == DECL_CLASS_CONTEXT (d)) | |
11732 | && (TREE_CHAIN (t) == NULL_TREE | |
11733 | || TREE_CHAIN (t) == void_list_node | |
11734 | || TREE_PURPOSE (TREE_CHAIN (t)))) | |
11735 | return 1; | |
11736 | return 0; | |
11737 | } | |
11738 | ||
8d08fdba MS |
11739 | /* These memoizing functions keep track of special properties which |
11740 | a class may have. `grok_ctor_properties' notices whether a class | |
11741 | has a constructor of the form X(X&), and also complains | |
11742 | if the class has a constructor of the form X(X). | |
11743 | `grok_op_properties' takes notice of the various forms of | |
11744 | operator= which are defined, as well as what sorts of type conversion | |
11745 | may apply. Both functions take a FUNCTION_DECL as an argument. */ | |
e92cc029 | 11746 | |
a0a33927 | 11747 | int |
8d08fdba MS |
11748 | grok_ctor_properties (ctype, decl) |
11749 | tree ctype, decl; | |
11750 | { | |
11751 | tree parmtypes = FUNCTION_ARG_CHAIN (decl); | |
11752 | tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node; | |
11753 | ||
11754 | /* When a type has virtual baseclasses, a magical first int argument is | |
11755 | added to any ctor so we can tell if the class has been initialized | |
11756 | yet. This could screw things up in this function, so we deliberately | |
11757 | ignore the leading int if we're in that situation. */ | |
711734a9 | 11758 | if (TYPE_USES_VIRTUAL_BASECLASSES (ctype)) |
8d08fdba | 11759 | { |
711734a9 JM |
11760 | my_friendly_assert (parmtypes |
11761 | && TREE_VALUE (parmtypes) == integer_type_node, | |
11762 | 980529); | |
8d08fdba MS |
11763 | parmtypes = TREE_CHAIN (parmtypes); |
11764 | parmtype = TREE_VALUE (parmtypes); | |
11765 | } | |
11766 | ||
f181d4ae MM |
11767 | /* [class.copy] |
11768 | ||
11769 | A non-template constructor for class X is a copy constructor if | |
11770 | its first parameter is of type X&, const X&, volatile X& or const | |
11771 | volatile X&, and either there are no other parameters or else all | |
11772 | other parameters have default arguments. */ | |
8d08fdba | 11773 | if (TREE_CODE (parmtype) == REFERENCE_TYPE |
0b41abe6 JM |
11774 | && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype |
11775 | && (TREE_CHAIN (parmtypes) == NULL_TREE | |
8d08fdba | 11776 | || TREE_CHAIN (parmtypes) == void_list_node |
f181d4ae MM |
11777 | || TREE_PURPOSE (TREE_CHAIN (parmtypes))) |
11778 | && !(DECL_TEMPLATE_INSTANTIATION (decl) | |
11779 | && is_member_template (DECL_TI_TEMPLATE (decl)))) | |
0b41abe6 JM |
11780 | { |
11781 | TYPE_HAS_INIT_REF (ctype) = 1; | |
91063b51 | 11782 | if (CP_TYPE_CONST_P (TREE_TYPE (parmtype))) |
0b41abe6 | 11783 | TYPE_HAS_CONST_INIT_REF (ctype) = 1; |
8d08fdba | 11784 | } |
f181d4ae MM |
11785 | /* [class.copy] |
11786 | ||
11787 | A declaration of a constructor for a class X is ill-formed if its | |
11788 | first parameter is of type (optionally cv-qualified) X and either | |
11789 | there are no other parameters or else all other parameters have | |
68642fb6 | 11790 | default arguments. |
f181d4ae MM |
11791 | |
11792 | We *don't* complain about member template instantiations that | |
11793 | have this form, though; they can occur as we try to decide what | |
11794 | constructor to use during overload resolution. Since overload | |
11795 | resolution will never prefer such a constructor to the | |
11796 | non-template copy constructor (which is either explicitly or | |
11797 | implicitly defined), there's no need to worry about their | |
11798 | existence. Theoretically, they should never even be | |
11799 | instantiated, but that's hard to forestall. */ | |
0b41abe6 | 11800 | else if (TYPE_MAIN_VARIANT (parmtype) == ctype |
59e76fc6 JM |
11801 | && (TREE_CHAIN (parmtypes) == NULL_TREE |
11802 | || TREE_CHAIN (parmtypes) == void_list_node | |
f181d4ae MM |
11803 | || TREE_PURPOSE (TREE_CHAIN (parmtypes))) |
11804 | && !(DECL_TEMPLATE_INSTANTIATION (decl) | |
11805 | && is_member_template (DECL_TI_TEMPLATE (decl)))) | |
8d08fdba | 11806 | { |
8251199e | 11807 | cp_error ("invalid constructor; you probably meant `%T (const %T&)'", |
0b41abe6 JM |
11808 | ctype, ctype); |
11809 | SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype); | |
11810 | return 0; | |
8d08fdba MS |
11811 | } |
11812 | else if (TREE_CODE (parmtype) == VOID_TYPE | |
11813 | || TREE_PURPOSE (parmtypes) != NULL_TREE) | |
11814 | TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1; | |
a0a33927 MS |
11815 | |
11816 | return 1; | |
8d08fdba MS |
11817 | } |
11818 | ||
11819 | /* An operator with this name can be either unary or binary. */ | |
e92cc029 | 11820 | |
a28e3c7f MS |
11821 | static int |
11822 | ambi_op_p (name) | |
8d08fdba MS |
11823 | tree name; |
11824 | { | |
11825 | return (name == ansi_opname [(int) INDIRECT_REF] | |
11826 | || name == ansi_opname [(int) ADDR_EXPR] | |
11827 | || name == ansi_opname [(int) NEGATE_EXPR] | |
11828 | || name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
11829 | || name == ansi_opname[(int) POSTDECREMENT_EXPR] | |
11830 | || name == ansi_opname [(int) CONVERT_EXPR]); | |
11831 | } | |
11832 | ||
11833 | /* An operator with this name can only be unary. */ | |
e92cc029 | 11834 | |
a28e3c7f MS |
11835 | static int |
11836 | unary_op_p (name) | |
8d08fdba MS |
11837 | tree name; |
11838 | { | |
11839 | return (name == ansi_opname [(int) TRUTH_NOT_EXPR] | |
11840 | || name == ansi_opname [(int) BIT_NOT_EXPR] | |
11841 | || name == ansi_opname [(int) COMPONENT_REF] | |
4c571114 | 11842 | || IDENTIFIER_TYPENAME_P (name)); |
8d08fdba MS |
11843 | } |
11844 | ||
11845 | /* Do a little sanity-checking on how they declared their operator. */ | |
e92cc029 | 11846 | |
5566b478 | 11847 | void |
8d08fdba MS |
11848 | grok_op_properties (decl, virtualp, friendp) |
11849 | tree decl; | |
11850 | int virtualp, friendp; | |
11851 | { | |
11852 | tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
11853 | int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE); | |
11854 | tree name = DECL_NAME (decl); | |
8d08fdba | 11855 | |
a28e3c7f MS |
11856 | if (current_class_type == NULL_TREE) |
11857 | friendp = 1; | |
8d08fdba | 11858 | |
a28e3c7f MS |
11859 | if (! friendp) |
11860 | { | |
f181d4ae MM |
11861 | /* [class.copy] |
11862 | ||
11863 | A user-declared copy assignment operator X::operator= is a | |
11864 | non-static non-template member function of class X with | |
11865 | exactly one parameter of type X, X&, const X&, volatile X& or | |
11866 | const volatile X&. */ | |
11867 | if (name == ansi_opname[(int) MODIFY_EXPR] | |
11868 | && !(DECL_TEMPLATE_INSTANTIATION (decl) | |
11869 | && is_member_template (DECL_TI_TEMPLATE (decl)))) | |
6a629cac | 11870 | ; |
a28e3c7f MS |
11871 | else if (name == ansi_opname[(int) CALL_EXPR]) |
11872 | TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1; | |
11873 | else if (name == ansi_opname[(int) ARRAY_REF]) | |
11874 | TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1; | |
11875 | else if (name == ansi_opname[(int) COMPONENT_REF] | |
11876 | || name == ansi_opname[(int) MEMBER_REF]) | |
11877 | TYPE_OVERLOADS_ARROW (current_class_type) = 1; | |
11878 | else if (name == ansi_opname[(int) NEW_EXPR]) | |
11879 | TYPE_GETS_NEW (current_class_type) |= 1; | |
11880 | else if (name == ansi_opname[(int) DELETE_EXPR]) | |
11881 | TYPE_GETS_DELETE (current_class_type) |= 1; | |
11882 | else if (name == ansi_opname[(int) VEC_NEW_EXPR]) | |
11883 | TYPE_GETS_NEW (current_class_type) |= 2; | |
11884 | else if (name == ansi_opname[(int) VEC_DELETE_EXPR]) | |
11885 | TYPE_GETS_DELETE (current_class_type) |= 2; | |
11886 | } | |
11887 | ||
11888 | if (name == ansi_opname[(int) NEW_EXPR] | |
11889 | || name == ansi_opname[(int) VEC_NEW_EXPR]) | |
8d08fdba | 11890 | { |
8d08fdba MS |
11891 | /* When the compiler encounters the definition of A::operator new, it |
11892 | doesn't look at the class declaration to find out if it's static. */ | |
a28e3c7f | 11893 | if (methodp) |
700f8a87 | 11894 | revert_static_member_fn (&decl, NULL, NULL); |
68642fb6 | 11895 | |
8d08fdba MS |
11896 | /* Take care of function decl if we had syntax errors. */ |
11897 | if (argtypes == NULL_TREE) | |
beb53fb8 JM |
11898 | TREE_TYPE (decl) |
11899 | = build_function_type (ptr_type_node, | |
11900 | hash_tree_chain (integer_type_node, | |
11901 | void_list_node)); | |
8d08fdba | 11902 | else |
a28e3c7f | 11903 | TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl)); |
8d08fdba | 11904 | } |
a28e3c7f MS |
11905 | else if (name == ansi_opname[(int) DELETE_EXPR] |
11906 | || name == ansi_opname[(int) VEC_DELETE_EXPR]) | |
8d08fdba | 11907 | { |
a28e3c7f | 11908 | if (methodp) |
700f8a87 | 11909 | revert_static_member_fn (&decl, NULL, NULL); |
68642fb6 | 11910 | |
8d08fdba | 11911 | if (argtypes == NULL_TREE) |
beb53fb8 JM |
11912 | TREE_TYPE (decl) |
11913 | = build_function_type (void_type_node, | |
11914 | hash_tree_chain (ptr_type_node, | |
11915 | void_list_node)); | |
8d08fdba | 11916 | else |
a28e3c7f MS |
11917 | { |
11918 | TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl)); | |
11919 | ||
11920 | if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR] | |
11921 | && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl))) | |
11922 | != void_list_node)) | |
11923 | TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1; | |
11924 | } | |
8d08fdba | 11925 | } |
8d08fdba MS |
11926 | else |
11927 | { | |
11928 | /* An operator function must either be a non-static member function | |
11929 | or have at least one parameter of a class, a reference to a class, | |
11930 | an enumeration, or a reference to an enumeration. 13.4.0.6 */ | |
700f8a87 | 11931 | if (! methodp || DECL_STATIC_FUNCTION_P (decl)) |
8d08fdba | 11932 | { |
4c571114 | 11933 | if (IDENTIFIER_TYPENAME_P (name) |
8d08fdba MS |
11934 | || name == ansi_opname[(int) CALL_EXPR] |
11935 | || name == ansi_opname[(int) MODIFY_EXPR] | |
11936 | || name == ansi_opname[(int) COMPONENT_REF] | |
11937 | || name == ansi_opname[(int) ARRAY_REF]) | |
8251199e | 11938 | cp_error ("`%D' must be a nonstatic member function", decl); |
8d08fdba MS |
11939 | else |
11940 | { | |
11941 | tree p = argtypes; | |
11942 | ||
700f8a87 | 11943 | if (DECL_STATIC_FUNCTION_P (decl)) |
8251199e | 11944 | cp_error ("`%D' must be either a non-static member function or a non-member function", decl); |
700f8a87 | 11945 | |
8d08fdba | 11946 | if (p) |
a1774733 | 11947 | for (; TREE_CODE (TREE_VALUE (p)) != VOID_TYPE ; p = TREE_CHAIN (p)) |
8d08fdba MS |
11948 | { |
11949 | tree arg = TREE_VALUE (p); | |
11950 | if (TREE_CODE (arg) == REFERENCE_TYPE) | |
11951 | arg = TREE_TYPE (arg); | |
11952 | ||
11953 | /* This lets bad template code slip through. */ | |
11954 | if (IS_AGGR_TYPE (arg) | |
11955 | || TREE_CODE (arg) == ENUMERAL_TYPE | |
73b0fce8 KL |
11956 | || TREE_CODE (arg) == TEMPLATE_TYPE_PARM |
11957 | || TREE_CODE (arg) == TEMPLATE_TEMPLATE_PARM) | |
8d08fdba MS |
11958 | goto foundaggr; |
11959 | } | |
8251199e JM |
11960 | cp_error |
11961 | ("`%D' must have an argument of class or enumerated type", | |
8d08fdba MS |
11962 | decl); |
11963 | foundaggr: | |
11964 | ; | |
11965 | } | |
11966 | } | |
68642fb6 | 11967 | |
277294d7 | 11968 | if (name == ansi_opname[(int) CALL_EXPR]) |
2c73f9f5 | 11969 | return; /* No restrictions on args. */ |
8d08fdba | 11970 | |
9a3b49ac | 11971 | if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl)) |
a0a33927 MS |
11972 | { |
11973 | tree t = TREE_TYPE (name); | |
11974 | if (TREE_CODE (t) == VOID_TYPE) | |
8251199e | 11975 | pedwarn ("void is not a valid type conversion operator"); |
a0a33927 MS |
11976 | else if (! friendp) |
11977 | { | |
11978 | int ref = (TREE_CODE (t) == REFERENCE_TYPE); | |
d8e178a0 | 11979 | const char *what = 0; |
a0a33927 MS |
11980 | if (ref) |
11981 | t = TYPE_MAIN_VARIANT (TREE_TYPE (t)); | |
11982 | ||
11983 | if (t == current_class_type) | |
11984 | what = "the same type"; | |
9a3b49ac | 11985 | /* Don't force t to be complete here. */ |
a0a33927 | 11986 | else if (IS_AGGR_TYPE (t) |
9a3b49ac | 11987 | && TYPE_SIZE (t) |
a0a33927 MS |
11988 | && DERIVED_FROM_P (t, current_class_type)) |
11989 | what = "a base class"; | |
11990 | ||
11991 | if (what) | |
8251199e | 11992 | warning ("conversion to %s%s will never use a type conversion operator", |
a0a33927 MS |
11993 | ref ? "a reference to " : "", what); |
11994 | } | |
11995 | } | |
11996 | ||
8d08fdba MS |
11997 | if (name == ansi_opname[(int) MODIFY_EXPR]) |
11998 | { | |
11999 | tree parmtype; | |
12000 | ||
12001 | if (list_length (argtypes) != 3 && methodp) | |
12002 | { | |
8251199e | 12003 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba MS |
12004 | return; |
12005 | } | |
12006 | parmtype = TREE_VALUE (TREE_CHAIN (argtypes)); | |
12007 | ||
f0e01782 | 12008 | if (copy_assignment_arg_p (parmtype, virtualp) |
a28e3c7f | 12009 | && ! friendp) |
8d08fdba MS |
12010 | { |
12011 | TYPE_HAS_ASSIGN_REF (current_class_type) = 1; | |
f0e01782 | 12012 | if (TREE_CODE (parmtype) != REFERENCE_TYPE |
91063b51 | 12013 | || CP_TYPE_CONST_P (TREE_TYPE (parmtype))) |
8d08fdba MS |
12014 | TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1; |
12015 | } | |
12016 | } | |
12017 | else if (name == ansi_opname[(int) COND_EXPR]) | |
12018 | { | |
12019 | /* 13.4.0.3 */ | |
a7a64a77 | 12020 | cp_error ("ANSI C++ prohibits overloading operator ?:"); |
68642fb6 | 12021 | } |
8d08fdba MS |
12022 | else if (ambi_op_p (name)) |
12023 | { | |
12024 | if (list_length (argtypes) == 2) | |
12025 | /* prefix */; | |
12026 | else if (list_length (argtypes) == 3) | |
12027 | { | |
12028 | if ((name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
12029 | || name == ansi_opname[(int) POSTDECREMENT_EXPR]) | |
5156628f | 12030 | && ! processing_template_decl |
007e5fea | 12031 | && ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes)), integer_type_node)) |
8d08fdba MS |
12032 | { |
12033 | if (methodp) | |
8251199e | 12034 | cp_error ("postfix `%D' must take `int' as its argument", |
8d08fdba MS |
12035 | decl); |
12036 | else | |
8251199e JM |
12037 | cp_error |
12038 | ("postfix `%D' must take `int' as its second argument", | |
12039 | decl); | |
8d08fdba MS |
12040 | } |
12041 | } | |
12042 | else | |
12043 | { | |
12044 | if (methodp) | |
8251199e | 12045 | cp_error ("`%D' must take either zero or one argument", decl); |
8d08fdba | 12046 | else |
8251199e | 12047 | cp_error ("`%D' must take either one or two arguments", decl); |
8d08fdba | 12048 | } |
824b9a4c MS |
12049 | |
12050 | /* More Effective C++ rule 6. */ | |
eb448459 | 12051 | if (warn_ecpp |
824b9a4c MS |
12052 | && (name == ansi_opname[(int) POSTINCREMENT_EXPR] |
12053 | || name == ansi_opname[(int) POSTDECREMENT_EXPR])) | |
12054 | { | |
12055 | tree arg = TREE_VALUE (argtypes); | |
12056 | tree ret = TREE_TYPE (TREE_TYPE (decl)); | |
12057 | if (methodp || TREE_CODE (arg) == REFERENCE_TYPE) | |
12058 | arg = TREE_TYPE (arg); | |
12059 | arg = TYPE_MAIN_VARIANT (arg); | |
12060 | if (list_length (argtypes) == 2) | |
12061 | { | |
12062 | if (TREE_CODE (ret) != REFERENCE_TYPE | |
3bfdc719 MM |
12063 | || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)), |
12064 | arg)) | |
8251199e | 12065 | cp_warning ("prefix `%D' should return `%T'", decl, |
824b9a4c MS |
12066 | build_reference_type (arg)); |
12067 | } | |
12068 | else | |
12069 | { | |
3bfdc719 | 12070 | if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg)) |
8251199e | 12071 | cp_warning ("postfix `%D' should return `%T'", decl, arg); |
824b9a4c MS |
12072 | } |
12073 | } | |
8d08fdba MS |
12074 | } |
12075 | else if (unary_op_p (name)) | |
12076 | { | |
12077 | if (list_length (argtypes) != 2) | |
12078 | { | |
12079 | if (methodp) | |
8251199e | 12080 | cp_error ("`%D' must take `void'", decl); |
8d08fdba | 12081 | else |
8251199e | 12082 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba MS |
12083 | } |
12084 | } | |
12085 | else /* if (binary_op_p (name)) */ | |
12086 | { | |
12087 | if (list_length (argtypes) != 3) | |
12088 | { | |
12089 | if (methodp) | |
8251199e | 12090 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba | 12091 | else |
8251199e | 12092 | cp_error ("`%D' must take exactly two arguments", decl); |
8d08fdba | 12093 | } |
824b9a4c MS |
12094 | |
12095 | /* More Effective C++ rule 7. */ | |
eb448459 | 12096 | if (warn_ecpp |
824b9a4c MS |
12097 | && (name == ansi_opname [TRUTH_ANDIF_EXPR] |
12098 | || name == ansi_opname [TRUTH_ORIF_EXPR] | |
12099 | || name == ansi_opname [COMPOUND_EXPR])) | |
8251199e | 12100 | cp_warning ("user-defined `%D' always evaluates both arguments", |
824b9a4c MS |
12101 | decl); |
12102 | } | |
12103 | ||
12104 | /* Effective C++ rule 23. */ | |
eb448459 | 12105 | if (warn_ecpp |
824b9a4c MS |
12106 | && list_length (argtypes) == 3 |
12107 | && (name == ansi_opname [PLUS_EXPR] | |
12108 | || name == ansi_opname [MINUS_EXPR] | |
12109 | || name == ansi_opname [TRUNC_DIV_EXPR] | |
12110 | || name == ansi_opname [MULT_EXPR]) | |
12111 | && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE) | |
8251199e | 12112 | cp_warning ("`%D' should return by value", decl); |
8d08fdba MS |
12113 | |
12114 | /* 13.4.0.8 */ | |
12115 | if (argtypes) | |
12116 | for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes)) | |
12117 | if (TREE_PURPOSE (argtypes)) | |
12118 | { | |
12119 | TREE_PURPOSE (argtypes) = NULL_TREE; | |
12120 | if (name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
12121 | || name == ansi_opname[(int) POSTDECREMENT_EXPR]) | |
12122 | { | |
12123 | if (pedantic) | |
8251199e | 12124 | cp_pedwarn ("`%D' cannot have default arguments", decl); |
8d08fdba MS |
12125 | } |
12126 | else | |
8251199e | 12127 | cp_error ("`%D' cannot have default arguments", decl); |
8d08fdba MS |
12128 | } |
12129 | } | |
12130 | } | |
12131 | \f | |
d8e178a0 | 12132 | static const char * |
094fe153 JM |
12133 | tag_name (code) |
12134 | enum tag_types code; | |
12135 | { | |
12136 | switch (code) | |
12137 | { | |
12138 | case record_type: | |
12139 | return "struct"; | |
12140 | case class_type: | |
12141 | return "class"; | |
12142 | case union_type: | |
12143 | return "union "; | |
12144 | case enum_type: | |
12145 | return "enum"; | |
094fe153 JM |
12146 | default: |
12147 | my_friendly_abort (981122); | |
12148 | } | |
12149 | } | |
12150 | ||
8d08fdba MS |
12151 | /* Get the struct, enum or union (CODE says which) with tag NAME. |
12152 | Define the tag as a forward-reference if it is not defined. | |
12153 | ||
12154 | C++: If a class derivation is given, process it here, and report | |
12155 | an error if multiple derivation declarations are not identical. | |
12156 | ||
12157 | If this is a definition, come in through xref_tag and only look in | |
12158 | the current frame for the name (since C++ allows new names in any | |
12159 | scope.) */ | |
12160 | ||
8d08fdba | 12161 | tree |
ca107ded | 12162 | xref_tag (code_type_node, name, globalize) |
8d08fdba | 12163 | tree code_type_node; |
ca107ded | 12164 | tree name; |
8d08fdba MS |
12165 | int globalize; |
12166 | { | |
12167 | enum tag_types tag_code; | |
12168 | enum tree_code code; | |
8d08fdba | 12169 | register tree ref, t; |
8f032717 | 12170 | struct binding_level *b = current_binding_level; |
a80e4195 | 12171 | int got_type = 0; |
dc8263bc | 12172 | tree attributes = NULL_TREE; |
25aab5d0 | 12173 | tree context = NULL_TREE; |
dc8263bc JM |
12174 | |
12175 | /* If we are called from the parser, code_type_node will sometimes be a | |
12176 | TREE_LIST. This indicates that the user wrote | |
12177 | "class __attribute__ ((foo)) bar". Extract the attributes so we can | |
12178 | use them later. */ | |
12179 | if (TREE_CODE (code_type_node) == TREE_LIST) | |
12180 | { | |
12181 | attributes = TREE_PURPOSE (code_type_node); | |
12182 | code_type_node = TREE_VALUE (code_type_node); | |
12183 | } | |
8d08fdba MS |
12184 | |
12185 | tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node); | |
12186 | switch (tag_code) | |
12187 | { | |
12188 | case record_type: | |
12189 | case class_type: | |
8d08fdba | 12190 | code = RECORD_TYPE; |
8d08fdba MS |
12191 | break; |
12192 | case union_type: | |
12193 | code = UNION_TYPE; | |
8d08fdba MS |
12194 | break; |
12195 | case enum_type: | |
12196 | code = ENUMERAL_TYPE; | |
12197 | break; | |
12198 | default: | |
12199 | my_friendly_abort (18); | |
12200 | } | |
12201 | ||
12202 | /* If a cross reference is requested, look up the type | |
12203 | already defined for this tag and return it. */ | |
be99da77 MS |
12204 | if (TREE_CODE_CLASS (TREE_CODE (name)) == 't') |
12205 | { | |
12206 | t = name; | |
a80e4195 MS |
12207 | name = TYPE_IDENTIFIER (t); |
12208 | got_type = 1; | |
be99da77 MS |
12209 | } |
12210 | else | |
12211 | t = IDENTIFIER_TYPE_VALUE (name); | |
61a127b3 | 12212 | |
73b0fce8 KL |
12213 | if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM |
12214 | && TREE_CODE (t) != TEMPLATE_TEMPLATE_PARM) | |
a0a33927 MS |
12215 | t = NULL_TREE; |
12216 | ||
8ccc31eb | 12217 | if (! globalize) |
8d08fdba | 12218 | { |
f3400fe2 JM |
12219 | /* If we know we are defining this tag, only look it up in |
12220 | this scope and don't try to find it as a type. */ | |
12221 | ref = lookup_tag (code, name, b, 1); | |
8d08fdba MS |
12222 | } |
12223 | else | |
12224 | { | |
25aab5d0 | 12225 | if (t) |
36a117a5 | 12226 | { |
25aab5d0 MM |
12227 | /* [dcl.type.elab] If the identifier resolves to a |
12228 | typedef-name or a template type-parameter, the | |
12229 | elaborated-type-specifier is ill-formed. */ | |
12230 | if (t != TYPE_MAIN_VARIANT (t) | |
12231 | || (CLASS_TYPE_P (t) && TYPE_WAS_ANONYMOUS (t))) | |
12232 | cp_pedwarn ("using typedef-name `%D' after `%s'", | |
12233 | TYPE_NAME (t), tag_name (tag_code)); | |
12234 | else if (TREE_CODE (t) == TEMPLATE_TYPE_PARM) | |
12235 | cp_error ("using template type parameter `%T' after `%s'", | |
12236 | t, tag_name (tag_code)); | |
12237 | ||
12238 | ref = t; | |
12239 | } | |
12240 | else | |
12241 | ref = lookup_tag (code, name, b, 0); | |
68642fb6 | 12242 | |
25aab5d0 MM |
12243 | if (! ref) |
12244 | { | |
12245 | /* Try finding it as a type declaration. If that wins, | |
68642fb6 | 12246 | use it. */ |
25aab5d0 MM |
12247 | ref = lookup_name (name, 1); |
12248 | ||
12249 | if (ref != NULL_TREE | |
12250 | && processing_template_decl | |
12251 | && DECL_CLASS_TEMPLATE_P (ref) | |
12252 | && template_class_depth (current_class_type) == 0) | |
12253 | /* Since GLOBALIZE is true, we're declaring a global | |
6757edfe | 12254 | template, so we want this type. */ |
25aab5d0 | 12255 | ref = DECL_RESULT (ref); |
6757edfe | 12256 | |
25aab5d0 MM |
12257 | if (ref && TREE_CODE (ref) == TYPE_DECL |
12258 | && TREE_CODE (TREE_TYPE (ref)) == code) | |
12259 | ref = TREE_TYPE (ref); | |
12260 | else | |
12261 | ref = NULL_TREE; | |
12262 | } | |
12263 | ||
68642fb6 UD |
12264 | if (ref && current_class_type |
12265 | && template_class_depth (current_class_type) | |
12266 | && PROCESSING_REAL_TEMPLATE_DECL_P ()) | |
25aab5d0 MM |
12267 | { |
12268 | /* Since GLOBALIZE is non-zero, we are not looking at a | |
12269 | definition of this tag. Since, in addition, we are currently | |
12270 | processing a (member) template declaration of a template | |
12271 | class, we must be very careful; consider: | |
12272 | ||
12273 | template <class X> | |
12274 | struct S1 | |
12275 | ||
12276 | template <class U> | |
12277 | struct S2 | |
12278 | { template <class V> | |
12279 | friend struct S1; }; | |
12280 | ||
12281 | Here, the S2::S1 declaration should not be confused with the | |
12282 | outer declaration. In particular, the inner version should | |
12283 | have a template parameter of level 2, not level 1. This | |
12284 | would be particularly important if the member declaration | |
12285 | were instead: | |
12286 | ||
12287 | template <class V = U> friend struct S1; | |
12288 | ||
12289 | say, when we should tsubst into `U' when instantiating | |
12290 | S2. On the other hand, when presented with: | |
12291 | ||
12292 | template <class T> | |
12293 | struct S1 { | |
12294 | template <class U> | |
12295 | struct S2 {}; | |
12296 | template <class U> | |
12297 | friend struct S2; | |
12298 | }; | |
12299 | ||
12300 | we must find the inner binding eventually. We | |
12301 | accomplish this by making sure that the new type we | |
12302 | create to represent this declaration has the right | |
12303 | TYPE_CONTEXT. */ | |
12304 | context = TYPE_CONTEXT (ref); | |
12305 | ref = NULL_TREE; | |
8d08fdba MS |
12306 | } |
12307 | } | |
12308 | ||
8d08fdba MS |
12309 | if (! ref) |
12310 | { | |
12311 | /* If no such tag is yet defined, create a forward-reference node | |
12312 | and record it as the "definition". | |
12313 | When a real declaration of this type is found, | |
12314 | the forward-reference will be altered into a real type. */ | |
8d08fdba MS |
12315 | if (code == ENUMERAL_TYPE) |
12316 | { | |
8251199e | 12317 | cp_error ("use of enum `%#D' without previous declaration", name); |
fc378698 | 12318 | |
8d08fdba MS |
12319 | ref = make_node (ENUMERAL_TYPE); |
12320 | ||
12321 | /* Give the type a default layout like unsigned int | |
12322 | to avoid crashing if it does not get defined. */ | |
12323 | TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node); | |
12324 | TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node); | |
12325 | TREE_UNSIGNED (ref) = 1; | |
12326 | TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node); | |
12327 | TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node); | |
12328 | TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node); | |
12329 | ||
12330 | /* Enable us to recognize when a type is created in class context. | |
12331 | To do nested classes correctly, this should probably be cleared | |
12332 | out when we leave this classes scope. Currently this in only | |
12333 | done in `start_enum'. */ | |
12334 | ||
12335 | pushtag (name, ref, globalize); | |
8d08fdba | 12336 | } |
8d08fdba MS |
12337 | else |
12338 | { | |
8d08fdba | 12339 | struct binding_level *old_b = class_binding_level; |
8d08fdba | 12340 | |
33848bb0 | 12341 | ref = make_aggr_type (code); |
25aab5d0 | 12342 | TYPE_CONTEXT (ref) = context; |
8d08fdba | 12343 | |
8d08fdba MS |
12344 | #ifdef NONNESTED_CLASSES |
12345 | /* Class types don't nest the way enums do. */ | |
12346 | class_binding_level = (struct binding_level *)0; | |
12347 | #endif | |
12348 | pushtag (name, ref, globalize); | |
12349 | class_binding_level = old_b; | |
8d08fdba MS |
12350 | } |
12351 | } | |
12352 | else | |
12353 | { | |
8d08fdba | 12354 | /* If it no longer looks like a nested type, make sure it's |
68642fb6 | 12355 | in global scope. |
30394414 | 12356 | If it is not an IDENTIFIER, this is not a declaration */ |
2c73f9f5 | 12357 | if (b->namespace_p && !class_binding_level |
5fdaba89 MM |
12358 | && TREE_CODE (name) == IDENTIFIER_NODE |
12359 | && IDENTIFIER_NAMESPACE_VALUE (name) == NULL_TREE) | |
12360 | SET_IDENTIFIER_NAMESPACE_VALUE (name, TYPE_NAME (ref)); | |
7fe6899f MM |
12361 | |
12362 | if (!globalize && processing_template_decl && IS_AGGR_TYPE (ref)) | |
6757edfe | 12363 | redeclare_class_template (ref, current_template_parms); |
8d08fdba MS |
12364 | } |
12365 | ||
8d08fdba MS |
12366 | /* Until the type is defined, tentatively accept whatever |
12367 | structure tag the user hands us. */ | |
12368 | if (TYPE_SIZE (ref) == NULL_TREE | |
12369 | && ref != current_class_type | |
12370 | /* Have to check this, in case we have contradictory tag info. */ | |
12371 | && IS_AGGR_TYPE_CODE (TREE_CODE (ref))) | |
12372 | { | |
12373 | if (tag_code == class_type) | |
12374 | CLASSTYPE_DECLARED_CLASS (ref) = 1; | |
6eabb241 | 12375 | else if (tag_code == record_type) |
8d08fdba MS |
12376 | CLASSTYPE_DECLARED_CLASS (ref) = 0; |
12377 | } | |
12378 | ||
dc8263bc JM |
12379 | TREE_TYPE (ref) = attributes; |
12380 | ||
8d08fdba MS |
12381 | return ref; |
12382 | } | |
8ccc31eb | 12383 | |
fc378698 MS |
12384 | tree |
12385 | xref_tag_from_type (old, id, globalize) | |
12386 | tree old, id; | |
12387 | int globalize; | |
12388 | { | |
12389 | tree code_type_node; | |
12390 | ||
12391 | if (TREE_CODE (old) == RECORD_TYPE) | |
12392 | code_type_node = (CLASSTYPE_DECLARED_CLASS (old) | |
12393 | ? class_type_node : record_type_node); | |
12394 | else | |
12395 | code_type_node = union_type_node; | |
12396 | ||
12397 | if (id == NULL_TREE) | |
12398 | id = TYPE_IDENTIFIER (old); | |
12399 | ||
ca107ded | 12400 | return xref_tag (code_type_node, id, globalize); |
fc378698 MS |
12401 | } |
12402 | ||
3fd71a52 MM |
12403 | /* REF is a type (named NAME), for which we have just seen some |
12404 | baseclasses. BINFO is a list of those baseclasses; the | |
12405 | TREE_PURPOSE is an access_* node, and the TREE_VALUE is the type of | |
12406 | the base-class. CODE_TYPE_NODE indicates whether REF is a class, | |
12407 | struct, or union. */ | |
12408 | ||
8ccc31eb MS |
12409 | void |
12410 | xref_basetypes (code_type_node, name, ref, binfo) | |
12411 | tree code_type_node; | |
12412 | tree name, ref; | |
12413 | tree binfo; | |
12414 | { | |
12415 | /* In the declaration `A : X, Y, ... Z' we mark all the types | |
12416 | (A, X, Y, ..., Z) so we can check for duplicates. */ | |
12417 | tree binfos; | |
d6479fe7 MM |
12418 | tree base; |
12419 | ||
8ccc31eb MS |
12420 | int i, len; |
12421 | enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node); | |
12422 | ||
12423 | if (tag_code == union_type) | |
12424 | { | |
8251199e | 12425 | cp_error ("derived union `%T' invalid", ref); |
8ccc31eb MS |
12426 | return; |
12427 | } | |
12428 | ||
12429 | len = list_length (binfo); | |
8ccc31eb | 12430 | |
d6479fe7 MM |
12431 | /* First, make sure that any templates in base-classes are |
12432 | instantiated. This ensures that if we call ourselves recursively | |
12433 | we do not get confused about which classes are marked and which | |
12434 | are not. */ | |
12435 | for (base = binfo; base; base = TREE_CHAIN (base)) | |
12436 | complete_type (TREE_VALUE (base)); | |
12437 | ||
8ccc31eb MS |
12438 | SET_CLASSTYPE_MARKED (ref); |
12439 | BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len); | |
12440 | ||
12441 | for (i = 0; binfo; binfo = TREE_CHAIN (binfo)) | |
12442 | { | |
12443 | /* The base of a derived struct is public by default. */ | |
12444 | int via_public | |
be99da77 MS |
12445 | = (TREE_PURPOSE (binfo) == access_public_node |
12446 | || TREE_PURPOSE (binfo) == access_public_virtual_node | |
8ccc31eb | 12447 | || (tag_code != class_type |
be99da77 MS |
12448 | && (TREE_PURPOSE (binfo) == access_default_node |
12449 | || TREE_PURPOSE (binfo) == access_default_virtual_node))); | |
d8b55a76 JM |
12450 | int via_protected |
12451 | = (TREE_PURPOSE (binfo) == access_protected_node | |
12452 | || TREE_PURPOSE (binfo) == access_protected_virtual_node); | |
8ccc31eb | 12453 | int via_virtual |
be99da77 | 12454 | = (TREE_PURPOSE (binfo) == access_private_virtual_node |
d8b55a76 | 12455 | || TREE_PURPOSE (binfo) == access_protected_virtual_node |
be99da77 MS |
12456 | || TREE_PURPOSE (binfo) == access_public_virtual_node |
12457 | || TREE_PURPOSE (binfo) == access_default_virtual_node); | |
12458 | tree basetype = TREE_VALUE (binfo); | |
8ccc31eb MS |
12459 | tree base_binfo; |
12460 | ||
8ccc31eb MS |
12461 | if (basetype && TREE_CODE (basetype) == TYPE_DECL) |
12462 | basetype = TREE_TYPE (basetype); | |
5566b478 MS |
12463 | if (!basetype |
12464 | || (TREE_CODE (basetype) != RECORD_TYPE | |
a80e4195 | 12465 | && TREE_CODE (basetype) != TYPENAME_TYPE |
73b0fce8 KL |
12466 | && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM |
12467 | && TREE_CODE (basetype) != TEMPLATE_TEMPLATE_PARM)) | |
8ccc31eb | 12468 | { |
8251199e | 12469 | cp_error ("base type `%T' fails to be a struct or class type", |
8ccc31eb MS |
12470 | TREE_VALUE (binfo)); |
12471 | continue; | |
12472 | } | |
2b9dc906 | 12473 | |
11b5139c | 12474 | GNU_xref_hier (name, basetype, via_public, via_virtual, 0); |
2b9dc906 | 12475 | |
8adf5b5e JM |
12476 | /* This code replaces similar code in layout_basetypes. |
12477 | We put the complete_type first for implicit `typename'. */ | |
d6479fe7 | 12478 | if (TYPE_SIZE (basetype) == NULL_TREE |
2b9dc906 | 12479 | && ! (current_template_parms && uses_template_parms (basetype))) |
8ccc31eb | 12480 | { |
8251199e | 12481 | cp_error ("base class `%T' has incomplete type", basetype); |
8ccc31eb MS |
12482 | continue; |
12483 | } | |
8ccc31eb MS |
12484 | else |
12485 | { | |
12486 | if (CLASSTYPE_MARKED (basetype)) | |
12487 | { | |
12488 | if (basetype == ref) | |
8251199e | 12489 | cp_error ("recursive type `%T' undefined", basetype); |
8ccc31eb | 12490 | else |
8251199e | 12491 | cp_error ("duplicate base type `%T' invalid", basetype); |
8ccc31eb MS |
12492 | continue; |
12493 | } | |
12494 | ||
eff71ab0 | 12495 | if (TYPE_FOR_JAVA (basetype) |
68642fb6 | 12496 | && (current_lang_stack |
9cd64686 | 12497 | == &VARRAY_TREE (current_lang_base, 0))) |
eff71ab0 PB |
12498 | TYPE_FOR_JAVA (ref) = 1; |
12499 | ||
8ccc31eb MS |
12500 | /* Note that the BINFO records which describe individual |
12501 | inheritances are *not* shared in the lattice! They | |
12502 | cannot be shared because a given baseclass may be | |
12503 | inherited with different `accessibility' by different | |
12504 | derived classes. (Each BINFO record describing an | |
12505 | individual inheritance contains flags which say what | |
12506 | the `accessibility' of that particular inheritance is.) */ | |
68642fb6 UD |
12507 | |
12508 | base_binfo | |
7ddedda4 MM |
12509 | = make_binfo (integer_zero_node, basetype, |
12510 | CLASS_TYPE_P (basetype) | |
12511 | ? TYPE_BINFO_VTABLE (basetype) : NULL_TREE, | |
12512 | CLASS_TYPE_P (basetype) | |
12513 | ? TYPE_BINFO_VIRTUALS (basetype) : NULL_TREE); | |
68642fb6 | 12514 | |
8ccc31eb MS |
12515 | TREE_VEC_ELT (binfos, i) = base_binfo; |
12516 | TREE_VIA_PUBLIC (base_binfo) = via_public; | |
12517 | TREE_VIA_PROTECTED (base_binfo) = via_protected; | |
12518 | TREE_VIA_VIRTUAL (base_binfo) = via_virtual; | |
12519 | BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref); | |
12520 | ||
dfbcd65a JM |
12521 | /* We need to unshare the binfos now so that lookups during class |
12522 | definition work. */ | |
12523 | unshare_base_binfos (base_binfo); | |
12524 | ||
8ccc31eb | 12525 | SET_CLASSTYPE_MARKED (basetype); |
9e9ff709 | 12526 | |
8ccc31eb MS |
12527 | /* We are free to modify these bits because they are meaningless |
12528 | at top level, and BASETYPE is a top-level type. */ | |
12529 | if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype)) | |
12530 | { | |
12531 | TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1; | |
4c6b7393 MM |
12532 | /* Converting to a virtual base class requires looking |
12533 | up the offset of the virtual base. */ | |
12534 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1; | |
8ccc31eb MS |
12535 | } |
12536 | ||
7ddedda4 MM |
12537 | if (CLASS_TYPE_P (basetype)) |
12538 | { | |
12539 | TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype); | |
12540 | TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype); | |
4c6b7393 | 12541 | /* If the base-class uses multiple inheritance, so do we. */ |
68642fb6 | 12542 | TYPE_USES_MULTIPLE_INHERITANCE (ref) |
4c6b7393 MM |
12543 | |= TYPE_USES_MULTIPLE_INHERITANCE (basetype); |
12544 | /* Likewise, if converting to a base of the base may require | |
12545 | code, then we may need to generate code to convert to a | |
12546 | base as well. */ | |
68642fb6 | 12547 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) |
4c6b7393 | 12548 | |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype); |
7ddedda4 MM |
12549 | } |
12550 | ||
8ccc31eb MS |
12551 | i += 1; |
12552 | } | |
12553 | } | |
12554 | if (i) | |
12555 | TREE_VEC_LENGTH (binfos) = i; | |
12556 | else | |
12557 | BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE; | |
12558 | ||
12559 | if (i > 1) | |
7ddedda4 | 12560 | { |
4c6b7393 MM |
12561 | TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1; |
12562 | /* If there is more than one non-empty they cannot be at the same | |
12563 | address. */ | |
12564 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1; | |
7ddedda4 MM |
12565 | } |
12566 | ||
8ccc31eb MS |
12567 | /* Unmark all the types. */ |
12568 | while (--i >= 0) | |
12569 | CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i))); | |
12570 | CLEAR_CLASSTYPE_MARKED (ref); | |
12571 | ||
70c532b5 MM |
12572 | /* Now that we know all the base-classes, set up the list of virtual |
12573 | bases. */ | |
23381155 | 12574 | get_vbase_types (ref); |
8ccc31eb | 12575 | } |
68642fb6 | 12576 | |
8d08fdba | 12577 | \f |
8d08fdba MS |
12578 | /* Begin compiling the definition of an enumeration type. |
12579 | NAME is its name (or null if anonymous). | |
12580 | Returns the type object, as yet incomplete. | |
12581 | Also records info about it so that build_enumerator | |
12582 | may be used to declare the individual values as they are read. */ | |
12583 | ||
12584 | tree | |
12585 | start_enum (name) | |
12586 | tree name; | |
12587 | { | |
12588 | register tree enumtype = NULL_TREE; | |
8f032717 | 12589 | struct binding_level *b = current_binding_level; |
8d08fdba MS |
12590 | |
12591 | /* If this is the real definition for a previous forward reference, | |
12592 | fill in the contents in the same object that used to be the | |
12593 | forward reference. */ | |
12594 | ||
12595 | if (name != NULL_TREE) | |
12596 | enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1); | |
12597 | ||
12598 | if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE) | |
30ff8252 NS |
12599 | { |
12600 | cp_error ("multiple definition of `%#T'", enumtype); | |
12601 | cp_error_at ("previous definition here", enumtype); | |
58595203 MM |
12602 | /* Clear out TYPE_VALUES, and start again. */ |
12603 | TYPE_VALUES (enumtype) = NULL_TREE; | |
30ff8252 | 12604 | } |
8d08fdba MS |
12605 | else |
12606 | { | |
12607 | enumtype = make_node (ENUMERAL_TYPE); | |
12608 | pushtag (name, enumtype, 0); | |
12609 | } | |
12610 | ||
12611 | if (current_class_type) | |
12612 | TREE_ADDRESSABLE (b->tags) = 1; | |
c91a56d2 | 12613 | |
8d08fdba MS |
12614 | GNU_xref_decl (current_function_decl, enumtype); |
12615 | return enumtype; | |
12616 | } | |
12617 | ||
12618 | /* After processing and defining all the values of an enumeration type, | |
12619 | install their decls in the enumeration type and finish it off. | |
12620 | ENUMTYPE is the type object and VALUES a list of name-value pairs. | |
12621 | Returns ENUMTYPE. */ | |
12622 | ||
12623 | tree | |
dbfe2124 MM |
12624 | finish_enum (enumtype) |
12625 | tree enumtype; | |
8d08fdba | 12626 | { |
a703fb38 | 12627 | register tree minnode = NULL_TREE, maxnode = NULL_TREE; |
8d08fdba MS |
12628 | /* Calculate the maximum value of any enumerator in this type. */ |
12629 | ||
dbfe2124 | 12630 | tree values = TYPE_VALUES (enumtype); |
8d08fdba MS |
12631 | if (values) |
12632 | { | |
ed44da02 | 12633 | tree pair; |
5566b478 | 12634 | |
ed44da02 | 12635 | for (pair = values; pair; pair = TREE_CHAIN (pair)) |
8d08fdba | 12636 | { |
ed44da02 MM |
12637 | tree decl; |
12638 | tree value; | |
12639 | ||
12640 | /* The TREE_VALUE is a CONST_DECL for this enumeration | |
12641 | constant. */ | |
12642 | decl = TREE_VALUE (pair); | |
12643 | ||
58595203 MM |
12644 | /* [dcl.enum] |
12645 | ||
12646 | Following the closing brace of an enum-specifier, each | |
12647 | enumerator has the type of its enumeration. Prior to the | |
12648 | closing brace, the type of each enumerator is the type of | |
12649 | its initializing value. */ | |
12650 | TREE_TYPE (decl) = enumtype; | |
12651 | ||
ed44da02 MM |
12652 | /* The DECL_INITIAL will be NULL if we are processing a |
12653 | template declaration and this enumeration constant had no | |
12654 | explicit initializer. */ | |
12655 | value = DECL_INITIAL (decl); | |
079e1098 | 12656 | if (value && !processing_template_decl) |
5566b478 | 12657 | { |
079e1098 MM |
12658 | /* Set the TREE_TYPE for the VALUE as well. That's so |
12659 | that when we call decl_constant_value we get an | |
12660 | entity of the right type (but with the constant | |
12661 | value). Since we shouldn't ever call | |
12662 | decl_constant_value on a template type, there's no | |
12663 | reason to do that when processing_template_decl. | |
12664 | And, if the expression is something like a | |
12665 | TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will | |
68642fb6 | 12666 | wreak havoc on the intended type of the expression. |
079e1098 MM |
12667 | |
12668 | Of course, there's also no point in trying to compute | |
12669 | minimum or maximum values if we're in a template. */ | |
5566b478 | 12670 | TREE_TYPE (value) = enumtype; |
ed44da02 | 12671 | |
079e1098 MM |
12672 | if (!minnode) |
12673 | minnode = maxnode = value; | |
12674 | else if (tree_int_cst_lt (maxnode, value)) | |
12675 | maxnode = value; | |
12676 | else if (tree_int_cst_lt (value, minnode)) | |
12677 | minnode = value; | |
5566b478 | 12678 | } |
ed44da02 | 12679 | |
68642fb6 | 12680 | if (processing_template_decl) |
72f2bd78 MM |
12681 | /* If this is just a template, leave the CONST_DECL |
12682 | alone. That way tsubst_copy will find CONST_DECLs for | |
12683 | CONST_DECLs, and not INTEGER_CSTs. */ | |
12684 | ; | |
12685 | else | |
12686 | /* In the list we're building up, we want the enumeration | |
12687 | values, not the CONST_DECLs. */ | |
12688 | TREE_VALUE (pair) = value; | |
8d08fdba MS |
12689 | } |
12690 | } | |
f376e137 MS |
12691 | else |
12692 | maxnode = minnode = integer_zero_node; | |
8d08fdba | 12693 | |
de22184b | 12694 | TYPE_VALUES (enumtype) = nreverse (values); |
2986ae00 | 12695 | |
5156628f | 12696 | if (processing_template_decl) |
b87692e5 | 12697 | { |
9360ac70 MM |
12698 | tree scope = current_scope (); |
12699 | if (scope && TREE_CODE (scope) == FUNCTION_DECL) | |
cbf882af | 12700 | add_tree (build_min (TAG_DEFN, enumtype)); |
b87692e5 | 12701 | } |
cbf882af MM |
12702 | else |
12703 | { | |
12704 | int unsignedp = tree_int_cst_sgn (minnode) >= 0; | |
12705 | int lowprec = min_precision (minnode, unsignedp); | |
12706 | int highprec = min_precision (maxnode, unsignedp); | |
12707 | int precision = MAX (lowprec, highprec); | |
12708 | tree tem; | |
5566b478 | 12709 | |
cbf882af | 12710 | TYPE_SIZE (enumtype) = NULL_TREE; |
8d08fdba | 12711 | |
cbf882af | 12712 | /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */ |
8ccc31eb | 12713 | |
cbf882af MM |
12714 | TYPE_PRECISION (enumtype) = precision; |
12715 | if (unsignedp) | |
12716 | fixup_unsigned_type (enumtype); | |
12717 | else | |
12718 | fixup_signed_type (enumtype); | |
8ccc31eb | 12719 | |
cbf882af MM |
12720 | if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node))) |
12721 | /* Use the width of the narrowest normal C type which is wide | |
68642fb6 | 12722 | enough. */ |
cbf882af MM |
12723 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size |
12724 | (precision, 1)); | |
12725 | else | |
12726 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node); | |
8d08fdba | 12727 | |
cbf882af MM |
12728 | TYPE_SIZE (enumtype) = 0; |
12729 | layout_type (enumtype); | |
68642fb6 | 12730 | |
cbf882af MM |
12731 | /* Fix up all variant types of this enum type. */ |
12732 | for (tem = TYPE_MAIN_VARIANT (enumtype); tem; | |
12733 | tem = TYPE_NEXT_VARIANT (tem)) | |
12734 | { | |
12735 | TYPE_VALUES (tem) = TYPE_VALUES (enumtype); | |
12736 | TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype); | |
12737 | TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype); | |
12738 | TYPE_SIZE (tem) = TYPE_SIZE (enumtype); | |
12739 | TYPE_SIZE_UNIT (tem) = TYPE_SIZE_UNIT (enumtype); | |
12740 | TYPE_MODE (tem) = TYPE_MODE (enumtype); | |
12741 | TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype); | |
12742 | TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype); | |
12743 | TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype); | |
12744 | } | |
8d08fdba | 12745 | |
cbf882af MM |
12746 | /* Finish debugging output for this type. */ |
12747 | rest_of_type_compilation (enumtype, namespace_bindings_p ()); | |
12748 | } | |
12749 | ||
8d08fdba MS |
12750 | return enumtype; |
12751 | } | |
12752 | ||
079e1098 | 12753 | /* Build and install a CONST_DECL for an enumeration constant of the |
58595203 | 12754 | enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided. |
8d08fdba MS |
12755 | Assignment of sequential values by default is handled here. */ |
12756 | ||
58595203 MM |
12757 | void |
12758 | build_enumerator (name, value, enumtype) | |
079e1098 MM |
12759 | tree name; |
12760 | tree value; | |
58595203 | 12761 | tree enumtype; |
8d08fdba | 12762 | { |
58595203 | 12763 | tree decl; |
e8bd800e | 12764 | tree context; |
58595203 MM |
12765 | tree type; |
12766 | tree values; | |
8d08fdba MS |
12767 | |
12768 | /* Remove no-op casts from the value. */ | |
12769 | if (value) | |
12770 | STRIP_TYPE_NOPS (value); | |
12771 | ||
58595203 MM |
12772 | if (! processing_template_decl) |
12773 | { | |
12774 | /* Validate and default VALUE. */ | |
12775 | if (value != NULL_TREE) | |
12776 | { | |
12777 | if (TREE_READONLY_DECL_P (value)) | |
12778 | value = decl_constant_value (value); | |
12779 | ||
12780 | if (TREE_CODE (value) == INTEGER_CST) | |
12781 | { | |
12782 | value = default_conversion (value); | |
12783 | constant_expression_warning (value); | |
12784 | } | |
12785 | else | |
12786 | { | |
12787 | cp_error ("enumerator value for `%D' not integer constant", name); | |
12788 | value = NULL_TREE; | |
12789 | } | |
12790 | } | |
12791 | ||
12792 | /* Default based on previous value. */ | |
12793 | if (value == NULL_TREE && ! processing_template_decl) | |
12794 | { | |
12795 | tree prev_value; | |
12796 | ||
12797 | if (TYPE_VALUES (enumtype)) | |
12798 | { | |
12799 | /* The next value is the previous value ... */ | |
12800 | prev_value = DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype))); | |
12801 | /* ... plus one. */ | |
12802 | value = build_binary_op_nodefault (PLUS_EXPR, | |
12803 | prev_value, | |
12804 | integer_one_node, | |
12805 | PLUS_EXPR); | |
68642fb6 | 12806 | |
58595203 MM |
12807 | if (tree_int_cst_lt (value, prev_value)) |
12808 | cp_error ("overflow in enumeration values at `%D'", name); | |
12809 | } | |
12810 | else | |
12811 | value = integer_zero_node; | |
12812 | } | |
12813 | ||
12814 | /* Remove no-op casts from the value. */ | |
12815 | if (value) | |
12816 | STRIP_TYPE_NOPS (value); | |
013bc8af | 12817 | #if 0 |
58595203 MM |
12818 | /* To fix MAX_VAL enum consts. (bkoz) */ |
12819 | TREE_TYPE (value) = integer_type_node; | |
013bc8af | 12820 | #endif |
58595203 | 12821 | } |
8d08fdba | 12822 | |
58595203 MM |
12823 | /* We always have to copy here; not all INTEGER_CSTs are unshared. |
12824 | Even in other cases, we will later (in finish_enum) be setting | |
12825 | the type of VALUE. But, we don't need to make a copy if this | |
12826 | VALUE is one of the enumeration constants for this same | |
12827 | enumeration type. */ | |
12828 | for (values = TYPE_VALUES (enumtype); values; values = TREE_CHAIN (values)) | |
12829 | if (TREE_VALUE (values) == value) | |
12830 | break; | |
12831 | /* If we didn't break out of the loop, then we do need a copy. */ | |
12832 | if (!values && value) | |
12833 | value = copy_node (value); | |
ed44da02 | 12834 | |
8d08fdba | 12835 | /* C++ associates enums with global, function, or class declarations. */ |
58595203 MM |
12836 | context = current_scope (); |
12837 | ||
12838 | /* Build the actual enumeration constant. Note that the enumeration | |
12839 | constants have the type of their initializers until the | |
12840 | enumeration is complete: | |
12841 | ||
12842 | [ dcl.enum ] | |
12843 | ||
12844 | Following the closing brace of an enum-specifier, each enumer- | |
12845 | ator has the type of its enumeration. Prior to the closing | |
12846 | brace, the type of each enumerator is the type of its | |
12847 | initializing value. | |
12848 | ||
12849 | In finish_enum we will reset the type. Of course, if we're | |
12850 | processing a template, there may be no value. */ | |
12851 | type = value ? TREE_TYPE (value) : NULL_TREE; | |
12852 | ||
12853 | if (context && context == current_class_type) | |
12854 | /* This enum declaration is local to the class. We need the full | |
12855 | lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */ | |
12856 | decl = build_lang_decl (CONST_DECL, name, type); | |
12857 | else | |
12858 | /* It's a global enum, or it's local to a function. (Note local to | |
e8bd800e | 12859 | a function could mean local to a class method. */ |
58595203 | 12860 | decl = build_decl (CONST_DECL, name, type); |
e8bd800e | 12861 | |
58595203 MM |
12862 | DECL_CONTEXT (decl) = FROB_CONTEXT (context); |
12863 | DECL_INITIAL (decl) = value; | |
12864 | TREE_READONLY (decl) = 1; | |
e8bd800e | 12865 | |
58595203 MM |
12866 | if (context && context == current_class_type) |
12867 | /* In something like `struct S { enum E { i = 7 }; };' we put `i' | |
8f032717 MM |
12868 | on the TYPE_FIELDS list for `S'. (That's so that you can say |
12869 | things like `S::i' later.) */ | |
58595203 MM |
12870 | finish_member_declaration (decl); |
12871 | else | |
12872 | { | |
12873 | pushdecl (decl); | |
12874 | GNU_xref_decl (current_function_decl, decl); | |
12875 | } | |
12876 | ||
12877 | /* Add this enumeration constant to the list for this type. */ | |
12878 | TYPE_VALUES (enumtype) = tree_cons (name, decl, TYPE_VALUES (enumtype)); | |
8d08fdba MS |
12879 | } |
12880 | ||
8d08fdba | 12881 | \f |
5566b478 MS |
12882 | static int function_depth; |
12883 | ||
a8f73d4b MM |
12884 | /* We're defining DECL. Make sure that it's type is OK. */ |
12885 | ||
12886 | static void | |
12887 | check_function_type (decl) | |
12888 | tree decl; | |
12889 | { | |
12890 | tree fntype = TREE_TYPE (decl); | |
12891 | ||
12892 | /* In a function definition, arg types must be complete. */ | |
12893 | require_complete_types_for_parms (current_function_parms); | |
12894 | ||
12895 | if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE) | |
12896 | { | |
12897 | cp_error ("return type `%#T' is incomplete", TREE_TYPE (fntype)); | |
12898 | ||
12899 | /* Make it return void instead, but don't change the | |
12900 | type of the DECL_RESULT, in case we have a named return value. */ | |
12901 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
12902 | { | |
12903 | tree ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype))); | |
12904 | TREE_TYPE (decl) | |
12905 | = build_cplus_method_type (ctype, | |
12906 | void_type_node, | |
12907 | FUNCTION_ARG_CHAIN (decl)); | |
12908 | } | |
12909 | else | |
12910 | TREE_TYPE (decl) | |
12911 | = build_function_type (void_type_node, | |
12912 | TYPE_ARG_TYPES (TREE_TYPE (decl))); | |
68642fb6 | 12913 | TREE_TYPE (decl) |
a8f73d4b MM |
12914 | = build_exception_variant (fntype, |
12915 | TYPE_RAISES_EXCEPTIONS (fntype)); | |
12916 | } | |
12917 | else | |
12918 | abstract_virtuals_error (decl, TREE_TYPE (fntype)); | |
12919 | } | |
12920 | ||
8d08fdba MS |
12921 | /* Create the FUNCTION_DECL for a function definition. |
12922 | DECLSPECS and DECLARATOR are the parts of the declaration; | |
12923 | they describe the function's name and the type it returns, | |
12924 | but twisted together in a fashion that parallels the syntax of C. | |
12925 | ||
a8f73d4b MM |
12926 | FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the |
12927 | DECLARATOR is really the DECL for the function we are about to | |
12928 | process and that DECLSPECS should be ignored), SF_INCLASS_INLINE | |
12929 | indicating that the function is an inline defined in-class, and | |
12930 | SF_EXPAND indicating that we should generate RTL for this | |
68642fb6 UD |
12931 | function. |
12932 | ||
8d08fdba MS |
12933 | This function creates a binding context for the function body |
12934 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
12935 | ||
12936 | Returns 1 on success. If the DECLARATOR is not suitable for a function | |
12937 | (it defines a datum instead), we return 0, which tells | |
12938 | yyparse to report a parse error. | |
12939 | ||
12940 | For C++, we must first check whether that datum makes any sense. | |
12941 | For example, "class A local_a(1,2);" means that variable local_a | |
12942 | is an aggregate of type A, which should have a constructor | |
87e3dbc9 | 12943 | applied to it with the argument list [1, 2]. */ |
8d08fdba MS |
12944 | |
12945 | int | |
a8f73d4b | 12946 | start_function (declspecs, declarator, attrs, flags) |
c11b6f21 | 12947 | tree declspecs, declarator, attrs; |
a8f73d4b | 12948 | int flags; |
8d08fdba | 12949 | { |
5566b478 | 12950 | tree decl1; |
8d08fdba MS |
12951 | tree ctype = NULL_TREE; |
12952 | tree fntype; | |
12953 | tree restype; | |
12954 | extern int have_extern_spec; | |
12955 | extern int used_extern_spec; | |
12956 | int doing_friend = 0; | |
a8f73d4b | 12957 | struct binding_level *bl; |
8d08fdba | 12958 | |
8d08fdba | 12959 | /* Sanity check. */ |
a1774733 | 12960 | my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160); |
8d08fdba MS |
12961 | my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161); |
12962 | ||
e92cc029 | 12963 | /* This should only be done once on the top most decl. */ |
8d08fdba MS |
12964 | if (have_extern_spec && !used_extern_spec) |
12965 | { | |
12966 | declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs); | |
12967 | used_extern_spec = 1; | |
12968 | } | |
12969 | ||
a8f73d4b | 12970 | if (flags & SF_PRE_PARSED) |
8d08fdba MS |
12971 | { |
12972 | decl1 = declarator; | |
12973 | ||
8d08fdba MS |
12974 | fntype = TREE_TYPE (decl1); |
12975 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
12976 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
12977 | ||
12978 | /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a | |
12979 | class is in the (lexical) scope of the class in which it is | |
12980 | defined. */ | |
12981 | if (!ctype && DECL_FRIEND_P (decl1)) | |
12982 | { | |
12983 | ctype = DECL_CLASS_CONTEXT (decl1); | |
12984 | ||
12985 | /* CTYPE could be null here if we're dealing with a template; | |
12986 | for example, `inline friend float foo()' inside a template | |
12987 | will have no CTYPE set. */ | |
12988 | if (ctype && TREE_CODE (ctype) != RECORD_TYPE) | |
12989 | ctype = NULL_TREE; | |
12990 | else | |
12991 | doing_friend = 1; | |
12992 | } | |
12993 | ||
5566b478 MS |
12994 | last_function_parms = DECL_ARGUMENTS (decl1); |
12995 | last_function_parm_tags = NULL_TREE; | |
8d08fdba MS |
12996 | } |
12997 | else | |
12998 | { | |
c11b6f21 | 12999 | decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE); |
8d08fdba MS |
13000 | /* If the declarator is not suitable for a function definition, |
13001 | cause a syntax error. */ | |
13002 | if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0; | |
13003 | ||
13004 | fntype = TREE_TYPE (decl1); | |
13005 | ||
13006 | restype = TREE_TYPE (fntype); | |
7ddedda4 | 13007 | if (CLASS_TYPE_P (restype) && !CLASSTYPE_GOT_SEMICOLON (restype)) |
8d08fdba | 13008 | { |
8251199e | 13009 | cp_error ("semicolon missing after declaration of `%#T'", restype); |
051e6fd7 | 13010 | shadow_tag (build_tree_list (NULL_TREE, restype)); |
8d08fdba MS |
13011 | CLASSTYPE_GOT_SEMICOLON (restype) = 1; |
13012 | if (TREE_CODE (fntype) == FUNCTION_TYPE) | |
13013 | fntype = build_function_type (integer_type_node, | |
13014 | TYPE_ARG_TYPES (fntype)); | |
13015 | else | |
13016 | fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)), | |
13017 | integer_type_node, | |
13018 | TYPE_ARG_TYPES (fntype)); | |
13019 | TREE_TYPE (decl1) = fntype; | |
13020 | } | |
13021 | ||
13022 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
13023 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
35680744 | 13024 | else if (DECL_MAIN_P (decl1)) |
8d08fdba MS |
13025 | { |
13026 | /* If this doesn't return integer_type, complain. */ | |
13027 | if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node) | |
13028 | { | |
a28e3c7f | 13029 | if (pedantic || warn_return_type) |
8251199e | 13030 | pedwarn ("return type for `main' changed to `int'"); |
8d08fdba MS |
13031 | TREE_TYPE (decl1) = fntype = default_function_type; |
13032 | } | |
8d08fdba MS |
13033 | } |
13034 | } | |
68642fb6 | 13035 | |
b35d4555 MM |
13036 | /* Sometimes we don't notice that a function is a static member, and |
13037 | build a METHOD_TYPE for it. Fix that up now. */ | |
13038 | if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1) | |
13039 | && TREE_CODE (TREE_TYPE (decl1)) == METHOD_TYPE) | |
13040 | { | |
13041 | revert_static_member_fn (&decl1, NULL, NULL); | |
13042 | last_function_parms = TREE_CHAIN (last_function_parms); | |
13043 | ctype = NULL_TREE; | |
13044 | } | |
8d08fdba MS |
13045 | |
13046 | /* Warn if function was previously implicitly declared | |
13047 | (but not if we warned then). */ | |
13048 | if (! warn_implicit | |
13049 | && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE) | |
8251199e | 13050 | cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1))); |
8d08fdba | 13051 | |
f181d4ae MM |
13052 | /* Set up current_class_type, and enter the scope of the class, if |
13053 | appropriate. */ | |
13054 | if (ctype) | |
13055 | push_nested_class (ctype, 1); | |
13056 | else if (DECL_STATIC_FUNCTION_P (decl1)) | |
13057 | push_nested_class (DECL_CONTEXT (decl1), 2); | |
13058 | ||
13059 | /* Now that we have entered the scope of the class, we must restore | |
13060 | the bindings for any template parameters surrounding DECL1, if it | |
13061 | is an inline member template. (Order is important; consider the | |
13062 | case where a template parameter has the same name as a field of | |
13063 | the class.) It is not until after this point that | |
13064 | PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */ | |
a8f73d4b | 13065 | if (flags & SF_INCLASS_INLINE) |
f181d4ae MM |
13066 | maybe_begin_member_template_processing (decl1); |
13067 | ||
9188c363 MM |
13068 | /* Effective C++ rule 15. See also c_expand_return. */ |
13069 | if (warn_ecpp | |
13070 | && DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR] | |
13071 | && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE) | |
13072 | cp_warning ("`operator=' should return a reference to `*this'"); | |
13073 | ||
13074 | /* Make the init_value nonzero so pushdecl knows this is not tentative. | |
13075 | error_mark_node is replaced below (in poplevel) with the BLOCK. */ | |
b35d4555 MM |
13076 | if (!DECL_INITIAL (decl1)) |
13077 | DECL_INITIAL (decl1) = error_mark_node; | |
9188c363 MM |
13078 | |
13079 | #ifdef SET_DEFAULT_DECL_ATTRIBUTES | |
13080 | SET_DEFAULT_DECL_ATTRIBUTES (decl1, attrs); | |
13081 | #endif | |
68642fb6 | 13082 | |
9188c363 MM |
13083 | /* This function exists in static storage. |
13084 | (This does not mean `static' in the C sense!) */ | |
13085 | TREE_STATIC (decl1) = 1; | |
13086 | ||
13087 | /* We must call push_template_decl after current_class_type is set | |
13088 | up. (If we are processing inline definitions after exiting a | |
13089 | class scope, current_class_type will be NULL_TREE until set above | |
13090 | by push_nested_class.) */ | |
13091 | if (processing_template_decl) | |
13092 | decl1 = push_template_decl (decl1); | |
13093 | ||
f181d4ae | 13094 | /* We are now in the scope of the function being defined. */ |
8d08fdba | 13095 | current_function_decl = decl1; |
f181d4ae | 13096 | |
5566b478 MS |
13097 | /* Save the parm names or decls from this function's declarator |
13098 | where store_parm_decls will find them. */ | |
13099 | current_function_parms = last_function_parms; | |
13100 | current_function_parm_tags = last_function_parm_tags; | |
8d08fdba | 13101 | |
a8f73d4b MM |
13102 | /* Make sure the parameter and return types are reasonable. When |
13103 | you declare a function, these types can be incomplete, but they | |
13104 | must be complete when you define the function. */ | |
5156628f | 13105 | if (! processing_template_decl) |
a8f73d4b | 13106 | check_function_type (decl1); |
f181d4ae | 13107 | |
a8f73d4b MM |
13108 | /* Build the return declaration for the function. */ |
13109 | restype = TREE_TYPE (fntype); | |
13110 | if (!processing_template_decl) | |
13111 | { | |
13112 | if (!DECL_RESULT (decl1)) | |
5566b478 | 13113 | { |
5566b478 | 13114 | DECL_RESULT (decl1) |
a8f73d4b | 13115 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype)); |
68642fb6 UD |
13116 | c_apply_type_quals_to_decl (CP_TYPE_QUALS (restype), |
13117 | DECL_RESULT (decl1)); | |
5566b478 | 13118 | } |
5566b478 | 13119 | } |
a8f73d4b MM |
13120 | else |
13121 | /* Just use `void'. Nobody will ever look at this anyhow. */ | |
13122 | DECL_RESULT (decl1) = build_decl (RESULT_DECL, 0, void_type_node); | |
13123 | ||
13124 | /* Initialize RTL machinery. We cannot do this until | |
13125 | CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this | |
13126 | even when processing a template; this is how we get | |
01d939e8 | 13127 | CFUN set up, and our per-function variables initialized. */ |
a8f73d4b MM |
13128 | bl = current_binding_level; |
13129 | init_function_start (decl1, input_filename, lineno); | |
13130 | current_binding_level = bl; | |
13131 | expanding_p = (flags & SF_EXPAND) != 0; | |
13132 | ||
13133 | /* Even though we're inside a function body, we still don't want to | |
13134 | call expand_expr to calculate the size of a variable-sized array. | |
13135 | We haven't necessarily assigned RTL to all variables yet, so it's | |
13136 | not safe to try to expand expressions involving them. */ | |
13137 | immediate_size_expand = 0; | |
01d939e8 | 13138 | cfun->x_dont_save_pending_sizes_p = 1; |
a8f73d4b | 13139 | |
6f80451c MM |
13140 | /* If we're building a statement-tree, start the tree now. */ |
13141 | if (processing_template_decl || !expanding_p) | |
13142 | begin_stmt_tree (&DECL_SAVED_TREE (decl1)); | |
13143 | ||
a8f73d4b | 13144 | /* Let the user know we're compiling this function. */ |
24bef158 | 13145 | if (processing_template_decl || !building_stmt_tree ()) |
a8f73d4b | 13146 | announce_function (decl1); |
b7484fbe | 13147 | |
878cd289 MS |
13148 | /* Record the decl so that the function name is defined. |
13149 | If we already have a decl for this name, and it is a FUNCTION_DECL, | |
13150 | use the old decl. */ | |
a8f73d4b | 13151 | if (!processing_template_decl && !(flags & SF_PRE_PARSED)) |
878cd289 | 13152 | { |
75650646 | 13153 | /* A specialization is not used to guide overload resolution. */ |
68642fb6 | 13154 | if ((flag_guiding_decls |
959d8796 JM |
13155 | || !DECL_TEMPLATE_SPECIALIZATION (decl1)) |
13156 | && ! DECL_FUNCTION_MEMBER_P (decl1)) | |
75650646 | 13157 | decl1 = pushdecl (decl1); |
2c73f9f5 | 13158 | else |
b7698cf0 JM |
13159 | { |
13160 | /* We need to set the DECL_CONTEXT. */ | |
13161 | if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1)) | |
13162 | DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1)); | |
13163 | /* And make sure we have enough default args. */ | |
13164 | check_default_args (decl1); | |
13165 | } | |
878cd289 MS |
13166 | DECL_MAIN_VARIANT (decl1) = decl1; |
13167 | fntype = TREE_TYPE (decl1); | |
13168 | } | |
5566b478 | 13169 | |
a8f73d4b | 13170 | /* Reset these in case the call to pushdecl changed them. */ |
5566b478 | 13171 | current_function_decl = decl1; |
01d939e8 | 13172 | cfun->decl = decl1; |
878cd289 | 13173 | |
b35d4555 MM |
13174 | /* Initialize the per-function data. */ |
13175 | if (!DECL_PENDING_INLINE_P (decl1) && DECL_SAVED_FUNCTION_DATA (decl1)) | |
13176 | { | |
13177 | /* If we already parsed this function, and we're just expanding it | |
13178 | now, restore saved state. */ | |
13179 | struct binding_level *bl = current_binding_level; | |
13180 | *cp_function_chain = *DECL_SAVED_FUNCTION_DATA (decl1); | |
13181 | current_binding_level = bl; | |
13182 | ||
b35d4555 MM |
13183 | /* This function is being processed in whole-function mode; we |
13184 | already did semantic analysis. */ | |
01d939e8 | 13185 | cfun->x_whole_function_mode_p = 1; |
b35d4555 | 13186 | |
914653a2 MM |
13187 | /* If we decided that we didn't want to inline this function, |
13188 | make sure the back-end knows that. */ | |
13189 | if (!current_function_cannot_inline) | |
13190 | current_function_cannot_inline = cp_function_chain->cannot_inline; | |
13191 | ||
b35d4555 MM |
13192 | /* We don't need the saved data anymore. */ |
13193 | free (DECL_SAVED_FUNCTION_DATA (decl1)); | |
13194 | DECL_SAVED_FUNCTION_DATA (decl1) = NULL; | |
13195 | } | |
13196 | else if (ctype && !doing_friend && !DECL_STATIC_FUNCTION_P (decl1)) | |
13197 | { | |
13198 | /* We know that this was set up by `grokclassfn'. We do not | |
13199 | wait until `store_parm_decls', since evil parse errors may | |
13200 | never get us to that point. Here we keep the consistency | |
13201 | between `current_class_type' and `current_class_ptr'. */ | |
13202 | tree t = DECL_ARGUMENTS (decl1); | |
68642fb6 UD |
13203 | |
13204 | my_friendly_assert (t != NULL_TREE && TREE_CODE (t) == PARM_DECL, | |
b35d4555 MM |
13205 | 162); |
13206 | my_friendly_assert (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE, | |
13207 | 19990811); | |
68642fb6 UD |
13208 | |
13209 | cp_function_chain->x_current_class_ref | |
b35d4555 MM |
13210 | = build_indirect_ref (t, NULL_PTR); |
13211 | cp_function_chain->x_current_class_ptr = t; | |
13212 | ||
018fc244 MM |
13213 | /* Constructors and destructors need to know whether they're "in |
13214 | charge" of initializing virtual base classes. */ | |
b35d4555 MM |
13215 | if (DECL_DESTRUCTOR_P (decl1)) |
13216 | current_in_charge_parm = TREE_CHAIN (t); | |
018fc244 MM |
13217 | else if (DECL_CONSTRUCTOR_P (decl1) |
13218 | && TREE_CHAIN (t) | |
13219 | && DECL_ARTIFICIAL (TREE_CHAIN (t)) | |
13220 | && (DECL_NAME (TREE_CHAIN (t)) | |
13221 | == in_charge_identifier)) | |
13222 | current_in_charge_parm = TREE_CHAIN (t); | |
b35d4555 MM |
13223 | } |
13224 | ||
db5ae43f | 13225 | if (DECL_INTERFACE_KNOWN (decl1)) |
faae18ab | 13226 | { |
86052cc3 JM |
13227 | tree ctx = hack_decl_function_context (decl1); |
13228 | ||
faae18ab MS |
13229 | if (DECL_NOT_REALLY_EXTERN (decl1)) |
13230 | DECL_EXTERNAL (decl1) = 0; | |
86052cc3 | 13231 | |
68642fb6 | 13232 | if (ctx != NULL_TREE && DECL_THIS_INLINE (ctx) |
86052cc3 JM |
13233 | && TREE_PUBLIC (ctx)) |
13234 | /* This is a function in a local class in an extern inline | |
13235 | function. */ | |
13236 | comdat_linkage (decl1); | |
faae18ab | 13237 | } |
8d08fdba MS |
13238 | /* If this function belongs to an interface, it is public. |
13239 | If it belongs to someone else's interface, it is also external. | |
1f901793 | 13240 | This only affects inlines and template instantiations. */ |
5566b478 MS |
13241 | else if (interface_unknown == 0 |
13242 | && (! DECL_TEMPLATE_INSTANTIATION (decl1) | |
d11ad92e | 13243 | || flag_alt_external_templates)) |
8d08fdba | 13244 | { |
5566b478 | 13245 | if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1) |
5156628f | 13246 | || processing_template_decl) |
1f901793 JM |
13247 | { |
13248 | DECL_EXTERNAL (decl1) | |
13249 | = (interface_only | |
9c73ec84 MS |
13250 | || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines |
13251 | && !DECL_VINDEX (decl1))); | |
1f901793 JM |
13252 | |
13253 | /* For WIN32 we also want to put these in linkonce sections. */ | |
13254 | maybe_make_one_only (decl1); | |
13255 | } | |
db5ae43f | 13256 | else |
893de33c | 13257 | DECL_EXTERNAL (decl1) = 0; |
e8abc66f | 13258 | DECL_NOT_REALLY_EXTERN (decl1) = 0; |
db5ae43f | 13259 | DECL_INTERFACE_KNOWN (decl1) = 1; |
8d08fdba | 13260 | } |
c16c47fb JM |
13261 | else if (interface_unknown && interface_only |
13262 | && (! DECL_TEMPLATE_INSTANTIATION (decl1) | |
13263 | || flag_alt_external_templates)) | |
13264 | { | |
13265 | /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma | |
13266 | interface, we will have interface_only set but not | |
13267 | interface_known. In that case, we don't want to use the normal | |
13268 | heuristics because someone will supply a #pragma implementation | |
13269 | elsewhere, and deducing it here would produce a conflict. */ | |
13270 | comdat_linkage (decl1); | |
13271 | DECL_EXTERNAL (decl1) = 0; | |
13272 | DECL_INTERFACE_KNOWN (decl1) = 1; | |
13273 | DECL_DEFER_OUTPUT (decl1) = 1; | |
13274 | } | |
8d08fdba | 13275 | else |
a0a33927 MS |
13276 | { |
13277 | /* This is a definition, not a reference. | |
b7484fbe MS |
13278 | So clear DECL_EXTERNAL. */ |
13279 | DECL_EXTERNAL (decl1) = 0; | |
faae18ab | 13280 | |
5566b478 MS |
13281 | if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)) |
13282 | && ! DECL_INTERFACE_KNOWN (decl1) | |
13283 | /* Don't try to defer nested functions for now. */ | |
e76a2646 | 13284 | && ! hack_decl_function_context (decl1)) |
878cd289 MS |
13285 | DECL_DEFER_OUTPUT (decl1) = 1; |
13286 | else | |
893de33c | 13287 | DECL_INTERFACE_KNOWN (decl1) = 1; |
db5ae43f | 13288 | } |
a9aedbc2 | 13289 | |
b35d4555 | 13290 | if (doing_semantic_analysis_p ()) |
8d08fdba | 13291 | { |
b35d4555 MM |
13292 | pushlevel (0); |
13293 | current_binding_level->parm_flag = 1; | |
8d08fdba | 13294 | } |
8d08fdba | 13295 | |
f30432d7 MS |
13296 | if (attrs) |
13297 | cplus_decl_attributes (decl1, NULL_TREE, attrs); | |
68642fb6 | 13298 | |
558475f0 MM |
13299 | if (!building_stmt_tree ()) |
13300 | { | |
13301 | GNU_xref_function (decl1, current_function_parms); | |
13302 | make_function_rtl (decl1); | |
13303 | } | |
db5ae43f | 13304 | |
8d08fdba MS |
13305 | /* Promote the value to int before returning it. */ |
13306 | if (C_PROMOTING_INTEGER_TYPE_P (restype)) | |
5566b478 MS |
13307 | restype = type_promotes_to (restype); |
13308 | ||
13309 | /* If this fcn was already referenced via a block-scope `extern' decl | |
13310 | (or an implicit decl), propagate certain information about the usage. */ | |
13311 | if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1))) | |
13312 | TREE_ADDRESSABLE (decl1) = 1; | |
13313 | ||
8d08fdba | 13314 | if (DECL_RESULT (decl1) == NULL_TREE) |
f30432d7 MS |
13315 | { |
13316 | DECL_RESULT (decl1) | |
13317 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype)); | |
91063b51 MM |
13318 | TREE_READONLY (DECL_RESULT (decl1)) = CP_TYPE_CONST_P (restype); |
13319 | TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = CP_TYPE_VOLATILE_P (restype); | |
f30432d7 | 13320 | } |
8d08fdba | 13321 | |
5566b478 MS |
13322 | ++function_depth; |
13323 | ||
f30432d7 MS |
13324 | if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1)) |
13325 | && DECL_LANGUAGE (decl1) == lang_cplusplus) | |
46e8c075 MM |
13326 | { |
13327 | dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
13328 | DECL_CONTEXT (dtor_label) = current_function_decl; | |
13329 | } | |
b35d4555 | 13330 | else if (DECL_CONSTRUCTOR_P (decl1)) |
46e8c075 MM |
13331 | { |
13332 | ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
13333 | DECL_CONTEXT (ctor_label) = current_function_decl; | |
13334 | } | |
8d08fdba | 13335 | |
8d08fdba MS |
13336 | return 1; |
13337 | } | |
13338 | \f | |
3e4010c4 | 13339 | /* Called after store_parm_decls for a function-try-block. */ |
6467930b MS |
13340 | |
13341 | void | |
13342 | expand_start_early_try_stmts () | |
13343 | { | |
6467930b | 13344 | expand_start_try_stmts (); |
f30432d7 MS |
13345 | } |
13346 | ||
8d08fdba MS |
13347 | /* Store the parameter declarations into the current function declaration. |
13348 | This is called after parsing the parameter declarations, before | |
13349 | digesting the body of the function. | |
13350 | ||
13351 | Also install to binding contour return value identifier, if any. */ | |
13352 | ||
13353 | void | |
13354 | store_parm_decls () | |
13355 | { | |
13356 | register tree fndecl = current_function_decl; | |
13357 | register tree parm; | |
13358 | int parms_have_cleanups = 0; | |
eb66be0e | 13359 | tree cleanups = NULL_TREE; |
8d08fdba | 13360 | |
8d08fdba MS |
13361 | /* This is a list of types declared among parms in a prototype. */ |
13362 | tree parmtags = current_function_parm_tags; | |
13363 | ||
13364 | /* This is a chain of any other decls that came in among the parm | |
13365 | declarations. If a parm is declared with enum {foo, bar} x; | |
13366 | then CONST_DECLs for foo and bar are put here. */ | |
13367 | tree nonparms = NULL_TREE; | |
13368 | ||
8d08fdba | 13369 | /* Create a binding level for the parms. */ |
b35d4555 MM |
13370 | if (!building_stmt_tree ()) |
13371 | expand_start_bindings (2); | |
8d08fdba | 13372 | |
b35d4555 | 13373 | if (current_function_parms) |
8d08fdba MS |
13374 | { |
13375 | /* This case is when the function was defined with an ANSI prototype. | |
13376 | The parms already have decls, so we need not do anything here | |
13377 | except record them as in effect | |
13378 | and complain if any redundant old-style parm decls were written. */ | |
13379 | ||
b35d4555 MM |
13380 | tree specparms = current_function_parms; |
13381 | tree next; | |
13382 | ||
13383 | if (doing_semantic_analysis_p ()) | |
13384 | { | |
13385 | /* Must clear this because it might contain TYPE_DECLs declared | |
13386 | at class level. */ | |
13387 | storedecls (NULL_TREE); | |
8d08fdba | 13388 | |
b35d4555 MM |
13389 | /* If we're doing semantic analysis, then we'll call pushdecl |
13390 | for each of these. We must do them in reverse order so that | |
13391 | they end in the correct forward order. */ | |
13392 | specparms = nreverse (specparms); | |
13393 | } | |
5566b478 | 13394 | |
b35d4555 | 13395 | for (parm = specparms; parm; parm = next) |
8d08fdba MS |
13396 | { |
13397 | next = TREE_CHAIN (parm); | |
13398 | if (TREE_CODE (parm) == PARM_DECL) | |
13399 | { | |
fe1b3b96 MM |
13400 | tree type = TREE_TYPE (parm); |
13401 | ||
b35d4555 | 13402 | if (doing_semantic_analysis_p ()) |
8d08fdba | 13403 | { |
fe1b3b96 | 13404 | tree cleanup; |
68642fb6 | 13405 | |
b35d4555 | 13406 | if (DECL_NAME (parm) == NULL_TREE |
fe1b3b96 | 13407 | || TREE_CODE (parm) != VOID_TYPE) |
b35d4555 MM |
13408 | pushdecl (parm); |
13409 | else | |
13410 | cp_error ("parameter `%D' declared void", parm); | |
eb66be0e | 13411 | |
ff47d094 MM |
13412 | cleanup = (processing_template_decl |
13413 | ? NULL_TREE | |
13414 | : maybe_build_cleanup (parm)); | |
68642fb6 | 13415 | |
fe1b3b96 MM |
13416 | if (cleanup) |
13417 | cleanups = tree_cons (parm, cleanup, cleanups); | |
8d08fdba | 13418 | } |
fe1b3b96 MM |
13419 | else if (type != error_mark_node |
13420 | && TYPE_NEEDS_DESTRUCTOR (type)) | |
13421 | parms_have_cleanups = 1; | |
8d08fdba MS |
13422 | } |
13423 | else | |
13424 | { | |
13425 | /* If we find an enum constant or a type tag, | |
13426 | put it aside for the moment. */ | |
13427 | TREE_CHAIN (parm) = NULL_TREE; | |
13428 | nonparms = chainon (nonparms, parm); | |
13429 | } | |
13430 | } | |
13431 | ||
b35d4555 MM |
13432 | if (doing_semantic_analysis_p ()) |
13433 | { | |
13434 | /* Get the decls in their original chain order | |
13435 | and record in the function. This is all and only the | |
13436 | PARM_DECLs that were pushed into scope by the loop above. */ | |
13437 | DECL_ARGUMENTS (fndecl) = getdecls (); | |
13438 | storetags (chainon (parmtags, gettags ())); | |
b35d4555 | 13439 | } |
8d08fdba MS |
13440 | } |
13441 | else | |
13442 | DECL_ARGUMENTS (fndecl) = NULL_TREE; | |
13443 | ||
13444 | /* Now store the final chain of decls for the arguments | |
13445 | as the decl-chain of the current lexical scope. | |
13446 | Put the enumerators in as well, at the front so that | |
13447 | DECL_ARGUMENTS is not modified. */ | |
b35d4555 MM |
13448 | if (doing_semantic_analysis_p ()) |
13449 | storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl))); | |
8d08fdba MS |
13450 | |
13451 | /* Initialize the RTL code for the function. */ | |
49ad7cfa | 13452 | DECL_SAVED_INSNS (fndecl) = 0; |
558475f0 | 13453 | if (! building_stmt_tree ()) |
5566b478 | 13454 | expand_function_start (fndecl, parms_have_cleanups); |
8d08fdba | 13455 | |
eb448459 MS |
13456 | current_function_parms_stored = 1; |
13457 | ||
13458 | /* If this function is `main', emit a call to `__main' | |
13459 | to run global initializers, etc. */ | |
558475f0 | 13460 | if (DECL_MAIN_P (fndecl) && !building_stmt_tree ()) |
35680744 | 13461 | expand_main_function (); |
eb448459 | 13462 | |
eb66be0e MS |
13463 | /* Now that we have initialized the parms, we can start their |
13464 | cleanups. We cannot do this before, since expand_decl_cleanup | |
13465 | should not be called before the parm can be used. */ | |
fe1b3b96 MM |
13466 | while (cleanups) |
13467 | { | |
68642fb6 | 13468 | finish_decl_cleanup (TREE_PURPOSE (cleanups), |
fe1b3b96 MM |
13469 | TREE_VALUE (cleanups)); |
13470 | cleanups = TREE_CHAIN (cleanups); | |
13471 | } | |
eb66be0e | 13472 | |
8d08fdba MS |
13473 | /* Create a binding contour which can be used to catch |
13474 | cleanup-generated temporaries. Also, if the return value needs or | |
13475 | has initialization, deal with that now. */ | |
13476 | if (parms_have_cleanups) | |
13477 | { | |
13478 | pushlevel (0); | |
558475f0 | 13479 | if (!building_stmt_tree ()) |
b35d4555 | 13480 | expand_start_bindings (2); |
8d08fdba MS |
13481 | } |
13482 | ||
b35d4555 | 13483 | /* Do the starting of the exception specifications, if we have any. */ |
68642fb6 UD |
13484 | if (flag_exceptions && !processing_template_decl |
13485 | && building_stmt_tree () | |
b35d4555 MM |
13486 | && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl))) |
13487 | current_eh_spec_try_block = expand_start_eh_spec (); | |
8d08fdba MS |
13488 | } |
13489 | ||
13490 | /* Bind a name and initialization to the return value of | |
13491 | the current function. */ | |
e92cc029 | 13492 | |
8d08fdba | 13493 | void |
558475f0 MM |
13494 | store_return_init (decl) |
13495 | tree decl; | |
8d08fdba | 13496 | { |
558475f0 MM |
13497 | /* If this named return value comes in a register, put it in a |
13498 | pseudo-register. */ | |
13499 | if (DECL_REGISTER (decl)) | |
8d08fdba | 13500 | { |
558475f0 | 13501 | original_result_rtx = DECL_RTL (decl); |
f0ad3f46 MM |
13502 | /* Note that the mode of the old DECL_RTL may be wider than the |
13503 | mode of DECL_RESULT, depending on the calling conventions for | |
13504 | the processor. For example, on the Alpha, a 32-bit integer | |
13505 | is returned in a DImode register -- the DECL_RESULT has | |
13506 | SImode but the DECL_RTL for the DECL_RESULT has DImode. So, | |
13507 | here, we use the mode the back-end has already assigned for | |
13508 | the return value. */ | |
13509 | DECL_RTL (decl) = gen_reg_rtx (GET_MODE (original_result_rtx)); | |
8d08fdba MS |
13510 | } |
13511 | } | |
13512 | ||
8d08fdba | 13513 | \f |
59026e79 MM |
13514 | /* We have finished doing semantic analysis on DECL, but have not yet |
13515 | generated RTL for its body. Save away our current state, so that | |
13516 | when we want to generate RTL later we know what to do. */ | |
13517 | ||
13518 | static void | |
13519 | save_function_data (decl) | |
13520 | tree decl; | |
13521 | { | |
13522 | struct language_function *f; | |
13523 | ||
13524 | /* Save the language-specific per-function data so that we can | |
13525 | get it back when we really expand this function. */ | |
13526 | my_friendly_assert (!DECL_PENDING_INLINE_P (decl), | |
13527 | 19990908); | |
68642fb6 | 13528 | |
59026e79 | 13529 | /* Make a copy. */ |
68642fb6 | 13530 | f = ((struct language_function *) |
59026e79 MM |
13531 | xmalloc (sizeof (struct language_function))); |
13532 | bcopy ((char *) cp_function_chain, (char *) f, | |
13533 | sizeof (struct language_function)); | |
13534 | DECL_SAVED_FUNCTION_DATA (decl) = f; | |
13535 | ||
13536 | /* Clear out the bits we don't need. */ | |
13537 | f->x_base_init_list = NULL_TREE; | |
13538 | f->x_member_init_list = NULL_TREE; | |
6f80451c MM |
13539 | f->x_stmt_tree.x_last_stmt = NULL_TREE; |
13540 | f->x_stmt_tree.x_last_expr_type = NULL_TREE; | |
59026e79 MM |
13541 | f->x_result_rtx = NULL_RTX; |
13542 | f->x_named_label_uses = NULL; | |
13543 | f->bindings = NULL; | |
13544 | ||
13545 | /* When we get back here again, we will be expanding. */ | |
13546 | f->x_expanding_p = 1; | |
914653a2 MM |
13547 | |
13548 | /* If we've already decided that we cannot inline this function, we | |
13549 | must remember that fact when we actually go to expand the | |
13550 | function. */ | |
13551 | f->cannot_inline = current_function_cannot_inline; | |
59026e79 MM |
13552 | } |
13553 | ||
efee38a9 MM |
13554 | /* At the end of every constructor we generate to code to return |
13555 | `this'. Do that now. */ | |
13556 | ||
13557 | static void | |
13558 | finish_constructor_body () | |
13559 | { | |
13560 | /* Any return from a constructor will end up here. */ | |
13561 | add_tree (build_min_nt (LABEL_STMT, ctor_label)); | |
13562 | ||
13563 | /* Clear CTOR_LABEL so that finish_return_stmt knows to really | |
13564 | generate the return, rather than a goto to CTOR_LABEL. */ | |
13565 | ctor_label = NULL_TREE; | |
13566 | /* In check_return_expr we translate an empty return from a | |
13567 | constructor to a return of `this'. */ | |
13568 | finish_return_stmt (NULL_TREE); | |
46e8c075 MM |
13569 | /* Mark the end of the constructor. */ |
13570 | add_tree (build_min_nt (CTOR_STMT)); | |
efee38a9 MM |
13571 | } |
13572 | ||
9bfadf57 MM |
13573 | /* At the end of every destructor we generate code to restore virtual |
13574 | function tables to the values desired by base classes and to call | |
efee38a9 | 13575 | to base class destructors. Do that now. */ |
9bfadf57 MM |
13576 | |
13577 | static void | |
13578 | finish_destructor_body () | |
13579 | { | |
13580 | tree compound_stmt; | |
13581 | tree in_charge; | |
13582 | tree virtual_size; | |
13583 | tree exprstmt; | |
13584 | ||
13585 | /* Create a block to contain all the extra code. */ | |
13586 | compound_stmt = begin_compound_stmt (/*has_no_scope=*/0); | |
13587 | ||
efee38a9 MM |
13588 | /* Any return from a destructor will end up here. */ |
13589 | add_tree (build_min_nt (LABEL_STMT, dtor_label)); | |
13590 | ||
9bfadf57 MM |
13591 | /* Generate the code to call destructor on base class. If this |
13592 | destructor belongs to a class with virtual functions, then set | |
13593 | the virtual function table pointer to represent the type of our | |
13594 | base class. */ | |
13595 | ||
13596 | /* This side-effect makes call to `build_delete' generate the code | |
13597 | we have to have at the end of this destructor. `build_delete' | |
13598 | will set the flag again. */ | |
13599 | TYPE_HAS_DESTRUCTOR (current_class_type) = 0; | |
13600 | ||
13601 | /* These are two cases where we cannot delegate deletion. */ | |
13602 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type) | |
13603 | || TYPE_GETS_REG_DELETE (current_class_type)) | |
13604 | in_charge = integer_zero_node; | |
13605 | else | |
13606 | in_charge = current_in_charge_parm; | |
13607 | ||
13608 | exprstmt = build_delete (current_class_type, | |
68642fb6 | 13609 | current_class_ref, |
9bfadf57 | 13610 | in_charge, |
68642fb6 | 13611 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, |
9bfadf57 MM |
13612 | 0); |
13613 | ||
13614 | if (exprstmt != error_mark_node | |
13615 | && (TREE_CODE (exprstmt) != NOP_EXPR | |
13616 | || TREE_OPERAND (exprstmt, 0) != integer_zero_node | |
13617 | || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))) | |
13618 | { | |
9bfadf57 MM |
13619 | if (exprstmt != void_zero_node) |
13620 | /* Don't call `expand_expr_stmt' if we're not going to do | |
13621 | anything, since -Wall will give a diagnostic. */ | |
13622 | finish_expr_stmt (exprstmt); | |
13623 | ||
efee38a9 | 13624 | /* Run destructors for all virtual baseclasses. */ |
9bfadf57 MM |
13625 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) |
13626 | { | |
13627 | tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type))); | |
13628 | tree if_stmt = begin_if_stmt (); | |
13629 | finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node, | |
68642fb6 | 13630 | current_in_charge_parm, |
9bfadf57 MM |
13631 | integer_two_node), |
13632 | if_stmt); | |
13633 | ||
13634 | while (vbases) | |
13635 | { | |
13636 | if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases))) | |
13637 | { | |
13638 | tree vb = get_vbase | |
13639 | (BINFO_TYPE (vbases), | |
13640 | TYPE_BINFO (current_class_type)); | |
13641 | finish_expr_stmt | |
13642 | (build_scoped_method_call | |
13643 | (current_class_ref, vb, dtor_identifier, | |
051e6fd7 | 13644 | build_tree_list (NULL_TREE, integer_zero_node))); |
9bfadf57 MM |
13645 | } |
13646 | vbases = TREE_CHAIN (vbases); | |
13647 | } | |
13648 | ||
13649 | finish_then_clause (if_stmt); | |
13650 | finish_if_stmt (); | |
13651 | } | |
13652 | } | |
68642fb6 | 13653 | |
9bfadf57 MM |
13654 | virtual_size = c_sizeof (current_class_type); |
13655 | ||
13656 | /* At the end, call delete if that's what's requested. */ | |
68642fb6 | 13657 | |
9bfadf57 MM |
13658 | /* FDIS sez: At the point of definition of a virtual destructor |
13659 | (including an implicit definition), non-placement operator delete | |
13660 | shall be looked up in the scope of the destructor's class and if | |
13661 | found shall be accessible and unambiguous. | |
68642fb6 | 13662 | |
9bfadf57 MM |
13663 | This is somewhat unclear, but I take it to mean that if the class |
13664 | only defines placement deletes we don't do anything here. So we | |
13665 | pass LOOKUP_SPECULATIVELY; delete_sanity will complain for us if | |
13666 | they ever try to delete one of these. */ | |
13667 | if (TYPE_GETS_REG_DELETE (current_class_type) | |
13668 | || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) | |
13669 | { | |
13670 | tree if_stmt; | |
13671 | ||
13672 | exprstmt = build_op_delete_call | |
13673 | (DELETE_EXPR, current_class_ptr, virtual_size, | |
13674 | LOOKUP_NORMAL | LOOKUP_SPECULATIVELY, NULL_TREE); | |
13675 | ||
13676 | if_stmt = begin_if_stmt (); | |
13677 | finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node, | |
13678 | current_in_charge_parm, | |
13679 | integer_one_node), | |
13680 | if_stmt); | |
13681 | finish_expr_stmt (exprstmt); | |
13682 | finish_then_clause (if_stmt); | |
13683 | finish_if_stmt (); | |
13684 | } | |
13685 | ||
13686 | /* Close the block we started above. */ | |
13687 | finish_compound_stmt (/*has_no_scope=*/0, compound_stmt); | |
13688 | } | |
13689 | ||
8d08fdba MS |
13690 | /* Finish up a function declaration and compile that function |
13691 | all the way to assembler language output. The free the storage | |
13692 | for the function definition. | |
13693 | ||
13694 | This is called after parsing the body of the function definition. | |
13695 | LINENO is the current line number. | |
13696 | ||
68642fb6 UD |
13697 | FLAGS is a bitwise or of the following values: |
13698 | 1 - CALL_POPLEVEL | |
f181d4ae MM |
13699 | An extra call to poplevel (and expand_end_bindings) must be |
13700 | made to take care of the binding contour for the base | |
13701 | initializers. This is only relevant for constructors. | |
13702 | 2 - INCLASS_INLINE | |
13703 | We just finished processing the body of an in-class inline | |
13704 | function definition. (This processing will have taken place | |
87e3dbc9 | 13705 | after the class definition is complete.) */ |
8d08fdba | 13706 | |
4d6abc1c | 13707 | tree |
87e3dbc9 | 13708 | finish_function (lineno, flags) |
8d08fdba | 13709 | int lineno; |
f181d4ae | 13710 | int flags; |
8d08fdba MS |
13711 | { |
13712 | register tree fndecl = current_function_decl; | |
13713 | tree fntype, ctype = NULL_TREE; | |
8d08fdba MS |
13714 | /* Label to use if this function is supposed to return a value. */ |
13715 | tree no_return_label = NULL_TREE; | |
f181d4ae MM |
13716 | int call_poplevel = (flags & 1) != 0; |
13717 | int inclass_inline = (flags & 2) != 0; | |
558475f0 | 13718 | int expand_p; |
87e3dbc9 | 13719 | int nested; |
8d08fdba MS |
13720 | |
13721 | /* When we get some parse errors, we can end up without a | |
13722 | current_function_decl, so cope. */ | |
13723 | if (fndecl == NULL_TREE) | |
4d6abc1c | 13724 | return error_mark_node; |
8d08fdba | 13725 | |
87e3dbc9 | 13726 | nested = function_depth > 1; |
8d08fdba MS |
13727 | fntype = TREE_TYPE (fndecl); |
13728 | ||
9bfadf57 MM |
13729 | /* TREE_READONLY (fndecl) = 1; |
13730 | This caused &foo to be of type ptr-to-const-function | |
13731 | which then got a warning when stored in a ptr-to-function variable. */ | |
8d08fdba MS |
13732 | |
13733 | /* This happens on strange parse errors. */ | |
13734 | if (! current_function_parms_stored) | |
13735 | { | |
13736 | call_poplevel = 0; | |
13737 | store_parm_decls (); | |
13738 | } | |
13739 | ||
558475f0 | 13740 | if (building_stmt_tree ()) |
8d08fdba | 13741 | { |
efee38a9 MM |
13742 | if (DECL_CONSTRUCTOR_P (fndecl)) |
13743 | { | |
13744 | finish_constructor_body (); | |
13745 | if (call_poplevel) | |
13746 | do_poplevel (); | |
13747 | } | |
9bfadf57 MM |
13748 | else if (DECL_DESTRUCTOR_P (fndecl) && !processing_template_decl) |
13749 | finish_destructor_body (); | |
efee38a9 MM |
13750 | else if (DECL_MAIN_P (fndecl)) |
13751 | { | |
13752 | /* Make it so that `main' always returns 0 by default. */ | |
13753 | #ifdef VMS | |
13754 | finish_return_stmt (integer_one_node); | |
13755 | #else | |
13756 | finish_return_stmt (integer_zero_node); | |
13757 | #endif | |
13758 | } | |
87e3dbc9 | 13759 | |
b35d4555 MM |
13760 | /* Finish dealing with exception specifiers. */ |
13761 | if (flag_exceptions && !processing_template_decl | |
13762 | && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl))) | |
68642fb6 | 13763 | expand_end_eh_spec (TYPE_RAISES_EXCEPTIONS |
b35d4555 MM |
13764 | (TREE_TYPE (current_function_decl)), |
13765 | current_eh_spec_try_block); | |
5566b478 MS |
13766 | } |
13767 | else | |
13768 | { | |
c95cd22e | 13769 | #if 0 |
5566b478 | 13770 | if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/) |
8d08fdba | 13771 | { |
ae673f14 JM |
13772 | /* Keep this code around in case we later want to control debug info |
13773 | based on whether a type is "used". (jason 1999-11-11) */ | |
13774 | ||
c95cd22e JM |
13775 | tree ttype = target_type (fntype); |
13776 | tree parmdecl; | |
13777 | ||
8d08fdba MS |
13778 | if (IS_AGGR_TYPE (ttype)) |
13779 | /* Let debugger know it should output info for this type. */ | |
13780 | note_debug_info_needed (ttype); | |
5566b478 MS |
13781 | |
13782 | for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl)) | |
13783 | { | |
13784 | ttype = target_type (TREE_TYPE (parmdecl)); | |
13785 | if (IS_AGGR_TYPE (ttype)) | |
13786 | /* Let debugger know it should output info for this type. */ | |
13787 | note_debug_info_needed (ttype); | |
13788 | } | |
8d08fdba | 13789 | } |
c95cd22e | 13790 | #endif |
8d08fdba | 13791 | |
5566b478 MS |
13792 | /* Clean house because we will need to reorder insns here. */ |
13793 | do_pending_stack_adjust (); | |
8d08fdba | 13794 | |
5566b478 | 13795 | if (dtor_label) |
9bfadf57 | 13796 | ; |
b35d4555 | 13797 | else if (DECL_CONSTRUCTOR_P (fndecl)) |
8d08fdba | 13798 | { |
8d08fdba | 13799 | if (call_poplevel) |
b35d4555 | 13800 | do_poplevel (); |
8d08fdba | 13801 | } |
5566b478 | 13802 | else if (return_label != NULL_RTX |
9bfadf57 MM |
13803 | && flag_this_is_variable <= 0 |
13804 | && current_function_return_value == NULL_TREE | |
13805 | && ! DECL_NAME (DECL_RESULT (current_function_decl))) | |
5566b478 | 13806 | no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
8d08fdba | 13807 | |
eb448459 MS |
13808 | if (flag_exceptions) |
13809 | expand_exception_blocks (); | |
13810 | ||
5566b478 MS |
13811 | /* If this function is supposed to return a value, ensure that |
13812 | we do not fall into the cleanups by mistake. The end of our | |
13813 | function will look like this: | |
68642fb6 | 13814 | |
5566b478 MS |
13815 | user code (may have return stmt somewhere) |
13816 | goto no_return_label | |
13817 | cleanup_label: | |
13818 | cleanups | |
13819 | goto return_label | |
13820 | no_return_label: | |
13821 | NOTE_INSN_FUNCTION_END | |
13822 | return_label: | |
13823 | things for return | |
68642fb6 | 13824 | |
5566b478 MS |
13825 | If the user omits a return stmt in the USER CODE section, we |
13826 | will have a control path which reaches NOTE_INSN_FUNCTION_END. | |
13827 | Otherwise, we won't. */ | |
13828 | if (no_return_label) | |
8d08fdba | 13829 | { |
5566b478 MS |
13830 | DECL_CONTEXT (no_return_label) = fndecl; |
13831 | DECL_INITIAL (no_return_label) = error_mark_node; | |
13832 | DECL_SOURCE_FILE (no_return_label) = input_filename; | |
13833 | DECL_SOURCE_LINE (no_return_label) = lineno; | |
13834 | expand_goto (no_return_label); | |
8d08fdba MS |
13835 | } |
13836 | ||
5566b478 | 13837 | if (cleanup_label) |
a9aedbc2 | 13838 | { |
2c73f9f5 | 13839 | /* Remove the binding contour which is used |
5566b478 MS |
13840 | to catch cleanup-generated temporaries. */ |
13841 | expand_end_bindings (0, 0, 0); | |
13842 | poplevel (0, 0, 0); | |
8d08fdba | 13843 | |
eb448459 MS |
13844 | /* Emit label at beginning of cleanup code for parameters. */ |
13845 | emit_label (cleanup_label); | |
13846 | } | |
b7484fbe | 13847 | |
a8f73d4b MM |
13848 | /* Get return value into register if that's where it's supposed |
13849 | to be. */ | |
5566b478 MS |
13850 | if (original_result_rtx) |
13851 | fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx); | |
8d08fdba | 13852 | |
5566b478 MS |
13853 | /* Finish building code that will trigger warnings if users forget |
13854 | to make their functions return values. */ | |
13855 | if (no_return_label || cleanup_label) | |
13856 | emit_jump (return_label); | |
13857 | if (no_return_label) | |
8d08fdba | 13858 | { |
5566b478 MS |
13859 | /* We don't need to call `expand_*_return' here because we |
13860 | don't need any cleanups here--this path of code is only | |
13861 | for error checking purposes. */ | |
13862 | expand_label (no_return_label); | |
8d08fdba MS |
13863 | } |
13864 | ||
078a76c8 MM |
13865 | /* We hard-wired immediate_size_expand to zero in |
13866 | start_function. Expand_function_end will decrement this | |
13867 | variable. So, we set the variable to one here, so that after | |
13868 | the decrement it will remain zero. */ | |
4ca7ba86 | 13869 | immediate_size_expand = 1; |
078a76c8 | 13870 | |
5566b478 MS |
13871 | /* Generate rtl for function exit. */ |
13872 | expand_function_end (input_filename, lineno, 1); | |
8d08fdba | 13873 | } |
558475f0 MM |
13874 | |
13875 | /* We have to save this value here in case | |
13876 | maybe_end_member_template_processing decides to pop all the | |
13877 | template parameters. */ | |
13878 | expand_p = !building_stmt_tree (); | |
68642fb6 | 13879 | |
558475f0 MM |
13880 | /* If we're saving up tree structure, tie off the function now. */ |
13881 | if (!expand_p) | |
6f80451c | 13882 | finish_stmt_tree (&DECL_SAVED_TREE (fndecl)); |
8d2733ca | 13883 | |
8d08fdba MS |
13884 | /* This must come after expand_function_end because cleanups might |
13885 | have declarations (from inline functions) that need to go into | |
13886 | this function's blocks. */ | |
b35d4555 MM |
13887 | if (doing_semantic_analysis_p ()) |
13888 | { | |
13889 | if (current_binding_level->parm_flag != 1) | |
13890 | my_friendly_abort (122); | |
13891 | poplevel (1, 0, 1); | |
13892 | } | |
8d08fdba | 13893 | |
a8f73d4b | 13894 | /* Remember that we were in class scope. */ |
db5ae43f | 13895 | if (current_class_name) |
a8f73d4b | 13896 | ctype = current_class_type; |
db5ae43f | 13897 | |
1caa11d3 MM |
13898 | /* Must mark the RESULT_DECL as being in this function. */ |
13899 | DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl; | |
13900 | ||
13901 | /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point | |
13902 | to the FUNCTION_DECL node itself. */ | |
13903 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
13904 | ||
59026e79 MM |
13905 | /* Save away current state, if appropriate. */ |
13906 | if (!expanding_p && !processing_template_decl) | |
13907 | save_function_data (fndecl); | |
13908 | ||
95fabfd3 MM |
13909 | /* If this function calls `setjmp' it cannot be inlined. When |
13910 | `longjmp' is called it is not guaranteed to restore the value of | |
13911 | local variables that have been modified since the call to | |
13912 | `setjmp'. So, if were to inline this function into some caller | |
13913 | `c', then when we `longjmp', we might not restore all variables | |
13914 | in `c'. (It might seem, at first blush, that there's no way for | |
13915 | this function to modify local variables in `c', but their | |
13916 | addresses may have been stored somewhere accessible to this | |
13917 | function.) */ | |
13918 | if (!expanding_p && !processing_template_decl && calls_setjmp_p (fndecl)) | |
13919 | DECL_UNINLINABLE (fndecl) = 1; | |
13920 | ||
558475f0 | 13921 | if (expand_p) |
5566b478 | 13922 | { |
a8f73d4b MM |
13923 | int returns_null; |
13924 | int returns_value; | |
75650646 MM |
13925 | int saved_flag_keep_inline_functions = |
13926 | flag_keep_inline_functions; | |
13927 | ||
5566b478 MS |
13928 | /* So we can tell if jump_optimize sets it to 1. */ |
13929 | can_reach_end = 0; | |
8d08fdba | 13930 | |
75650646 | 13931 | if (DECL_CONTEXT (fndecl) != NULL_TREE |
e1467ff2 | 13932 | && hack_decl_function_context (fndecl)) |
75650646 MM |
13933 | /* Trick rest_of_compilation into not deferring output of this |
13934 | function, even if it is inline, since the rtl_obstack for | |
13935 | this function is the function_obstack of the enclosing | |
13936 | function and will be deallocated when the enclosing | |
13937 | function is gone. See save_tree_status. */ | |
13938 | flag_keep_inline_functions = 1; | |
13939 | ||
a8f73d4b MM |
13940 | /* Before we call rest_of_compilation (which will pop the |
13941 | CURRENT_FUNCTION), we must save these values. */ | |
13942 | returns_null = current_function_returns_null; | |
13943 | returns_value = current_function_returns_value; | |
13944 | ||
87e3dbc9 MM |
13945 | /* If this is a nested function (like a template instantiation |
13946 | that we're compiling in the midst of compiling something | |
13947 | else), push a new GC context. That will keep local variables | |
13948 | on the stack from being collected while we're doing the | |
13949 | compilation of this function. */ | |
13950 | if (function_depth > 1) | |
13951 | ggc_push_context (); | |
13952 | ||
6633d636 MS |
13953 | /* Run the optimizers and output the assembler code for this |
13954 | function. */ | |
6633d636 MS |
13955 | if (DECL_ARTIFICIAL (fndecl)) |
13956 | { | |
13957 | /* Do we really *want* to inline this synthesized method? */ | |
13958 | ||
13959 | int save_fif = flag_inline_functions; | |
13960 | flag_inline_functions = 1; | |
13961 | ||
13962 | /* Turn off DECL_INLINE for the moment so function_cannot_inline_p | |
13963 | will check our size. */ | |
13964 | DECL_INLINE (fndecl) = 0; | |
13965 | ||
13966 | rest_of_compilation (fndecl); | |
13967 | flag_inline_functions = save_fif; | |
13968 | } | |
13969 | else | |
13970 | rest_of_compilation (fndecl); | |
8d08fdba | 13971 | |
87e3dbc9 MM |
13972 | /* Undo the call to ggc_push_context above. */ |
13973 | if (function_depth > 1) | |
13974 | ggc_pop_context (); | |
13975 | ||
75650646 MM |
13976 | flag_keep_inline_functions = saved_flag_keep_inline_functions; |
13977 | ||
5566b478 MS |
13978 | if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl)) |
13979 | { | |
13980 | /* Set DECL_EXTERNAL so that assemble_external will be called as | |
13981 | necessary. We'll clear it again in finish_file. */ | |
13982 | if (! DECL_EXTERNAL (fndecl)) | |
13983 | DECL_NOT_REALLY_EXTERN (fndecl) = 1; | |
13984 | DECL_EXTERNAL (fndecl) = 1; | |
13985 | mark_inline_for_output (fndecl); | |
13986 | } | |
8926095f | 13987 | |
ae673f14 JM |
13988 | #if 0 |
13989 | /* Keep this code around in case we later want to control debug info | |
13990 | based on whether a type is "used". (jason 1999-11-11) */ | |
13991 | ||
d2e5ee5c MS |
13992 | if (ctype && TREE_ASM_WRITTEN (fndecl)) |
13993 | note_debug_info_needed (ctype); | |
ae673f14 | 13994 | #endif |
d2e5ee5c | 13995 | |
a8f73d4b | 13996 | returns_null |= can_reach_end; |
8d08fdba | 13997 | |
5566b478 MS |
13998 | /* Since we don't normally go through c_expand_return for constructors, |
13999 | this normally gets the wrong value. | |
14000 | Also, named return values have their return codes emitted after | |
14001 | NOTE_INSN_FUNCTION_END, confusing jump.c. */ | |
14002 | if (DECL_CONSTRUCTOR_P (fndecl) | |
14003 | || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE) | |
a8f73d4b | 14004 | returns_null = 0; |
8d08fdba | 14005 | |
a8f73d4b | 14006 | if (TREE_THIS_VOLATILE (fndecl) && returns_null) |
8251199e | 14007 | cp_warning ("`noreturn' function `%D' does return", fndecl); |
5566b478 | 14008 | else if ((warn_return_type || pedantic) |
a8f73d4b | 14009 | && returns_null |
a1774733 | 14010 | && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE) |
5566b478 MS |
14011 | { |
14012 | /* If this function returns non-void and control can drop through, | |
14013 | complain. */ | |
8251199e | 14014 | cp_warning ("control reaches end of non-void function `%D'", fndecl); |
5566b478 MS |
14015 | } |
14016 | /* With just -W, complain only if function returns both with | |
14017 | and without a value. */ | |
a8f73d4b | 14018 | else if (extra_warnings && returns_value && returns_null) |
8251199e | 14019 | warning ("this function may return with or without a value"); |
8d08fdba | 14020 | } |
a8f73d4b MM |
14021 | else |
14022 | { | |
f7faca78 | 14023 | /* Clear out memory we no longer need. */ |
01d939e8 | 14024 | free_after_parsing (cfun); |
a8f73d4b | 14025 | /* Since we never call rest_of_compilation, we never clear |
01d939e8 BS |
14026 | CFUN. Do so explicitly. */ |
14027 | free_after_compilation (cfun); | |
14028 | cfun = NULL; | |
a8f73d4b MM |
14029 | } |
14030 | ||
14031 | /* If this is a in-class inline definition, we may have to pop the | |
14032 | bindings for the template parameters that we added in | |
14033 | maybe_begin_member_template_processing when start_function was | |
14034 | called. */ | |
14035 | if (inclass_inline) | |
14036 | maybe_end_member_template_processing (); | |
14037 | ||
14038 | /* Leave the scope of the class. */ | |
14039 | if (ctype) | |
14040 | pop_nested_class (); | |
5566b478 MS |
14041 | |
14042 | --function_depth; | |
8d08fdba | 14043 | |
d9b2d9da MM |
14044 | if (!DECL_SAVED_INSNS (fndecl) && !DECL_SAVED_FUNCTION_DATA (fndecl) |
14045 | && !(flag_inline_trees && DECL_INLINE (fndecl))) | |
8d08fdba | 14046 | { |
d2e5ee5c MS |
14047 | tree t; |
14048 | ||
8d08fdba MS |
14049 | /* Stop pointing to the local nodes about to be freed. */ |
14050 | /* But DECL_INITIAL must remain nonzero so we know this | |
14051 | was an actual function definition. */ | |
14052 | DECL_INITIAL (fndecl) = error_mark_node; | |
d2e5ee5c | 14053 | for (t = DECL_ARGUMENTS (fndecl); t; t = TREE_CHAIN (t)) |
de22184b | 14054 | DECL_RTL (t) = DECL_INCOMING_RTL (t) = NULL_RTX; |
8d08fdba MS |
14055 | } |
14056 | ||
e1cd6e56 | 14057 | if (DECL_STATIC_CONSTRUCTOR (fndecl)) |
e1b3e07d | 14058 | static_ctors = tree_cons (NULL_TREE, fndecl, static_ctors); |
e1cd6e56 | 14059 | if (DECL_STATIC_DESTRUCTOR (fndecl)) |
e1b3e07d | 14060 | static_dtors = tree_cons (NULL_TREE, fndecl, static_dtors); |
e1cd6e56 | 14061 | |
4d6abc1c | 14062 | /* Clean up. */ |
28cbf42c MS |
14063 | if (! nested) |
14064 | { | |
14065 | /* Let the error reporting routines know that we're outside a | |
14066 | function. For a nested function, this value is used in | |
14067 | pop_cp_function_context and then reset via pop_function_context. */ | |
14068 | current_function_decl = NULL_TREE; | |
a09ba2e0 MM |
14069 | /* We don't really care about obstacks, but the middle-end |
14070 | sometimes cares on what obstck things are located. */ | |
14071 | permanent_allocation (1); | |
28cbf42c | 14072 | } |
4d6abc1c MM |
14073 | |
14074 | return fndecl; | |
8d08fdba MS |
14075 | } |
14076 | \f | |
14077 | /* Create the FUNCTION_DECL for a function definition. | |
8d08fdba MS |
14078 | DECLSPECS and DECLARATOR are the parts of the declaration; |
14079 | they describe the return type and the name of the function, | |
14080 | but twisted together in a fashion that parallels the syntax of C. | |
14081 | ||
14082 | This function creates a binding context for the function body | |
14083 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
14084 | ||
14085 | Returns a FUNCTION_DECL on success. | |
14086 | ||
14087 | If the DECLARATOR is not suitable for a function (it defines a datum | |
14088 | instead), we return 0, which tells yyparse to report a parse error. | |
14089 | ||
14090 | May return void_type_node indicating that this method is actually | |
14091 | a friend. See grokfield for more details. | |
14092 | ||
14093 | Came here with a `.pushlevel' . | |
14094 | ||
14095 | DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING | |
14096 | CHANGES TO CODE IN `grokfield'. */ | |
e92cc029 | 14097 | |
8d08fdba | 14098 | tree |
acf82af2 JM |
14099 | start_method (declspecs, declarator, attrlist) |
14100 | tree declarator, declspecs, attrlist; | |
8d08fdba | 14101 | { |
c11b6f21 | 14102 | tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0, |
acf82af2 | 14103 | attrlist); |
8d08fdba MS |
14104 | |
14105 | /* Something too ugly to handle. */ | |
14106 | if (fndecl == NULL_TREE) | |
14107 | return NULL_TREE; | |
14108 | ||
14109 | /* Pass friends other than inline friend functions back. */ | |
a1774733 | 14110 | if (fndecl == void_type_node) |
8d08fdba MS |
14111 | return fndecl; |
14112 | ||
14113 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
14114 | /* Not a function, tell parser to report parse error. */ | |
14115 | return NULL_TREE; | |
14116 | ||
8d08fdba MS |
14117 | if (DECL_IN_AGGR_P (fndecl)) |
14118 | { | |
14119 | if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type) | |
14120 | { | |
68642fb6 | 14121 | if (DECL_CONTEXT (fndecl) |
2c73f9f5 | 14122 | && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL) |
8251199e JM |
14123 | cp_error ("`%D' is already defined in class %s", fndecl, |
14124 | TYPE_NAME_STRING (DECL_CONTEXT (fndecl))); | |
8d08fdba MS |
14125 | } |
14126 | return void_type_node; | |
14127 | } | |
14128 | ||
f3400fe2 JM |
14129 | check_template_shadow (fndecl); |
14130 | ||
faae18ab MS |
14131 | DECL_THIS_INLINE (fndecl) = 1; |
14132 | ||
8926095f | 14133 | if (flag_default_inline) |
8d08fdba MS |
14134 | DECL_INLINE (fndecl) = 1; |
14135 | ||
36a117a5 MM |
14136 | /* We process method specializations in finish_struct_1. */ |
14137 | if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl)) | |
3ac3d9ea | 14138 | fndecl = push_template_decl (fndecl); |
a0a33927 | 14139 | |
8d08fdba MS |
14140 | /* We read in the parameters on the maybepermanent_obstack, |
14141 | but we won't be getting back to them until after we | |
14142 | may have clobbered them. So the call to preserve_data | |
14143 | will keep them safe. */ | |
14144 | preserve_data (); | |
14145 | ||
14146 | if (! DECL_FRIEND_P (fndecl)) | |
14147 | { | |
8d08fdba MS |
14148 | if (TREE_CHAIN (fndecl)) |
14149 | { | |
14150 | fndecl = copy_node (fndecl); | |
14151 | TREE_CHAIN (fndecl) = NULL_TREE; | |
14152 | } | |
14153 | ||
14154 | if (DECL_CONSTRUCTOR_P (fndecl)) | |
a0a33927 MS |
14155 | { |
14156 | if (! grok_ctor_properties (current_class_type, fndecl)) | |
14157 | return void_type_node; | |
14158 | } | |
8d08fdba MS |
14159 | else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl))) |
14160 | grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0); | |
14161 | } | |
14162 | ||
cd9f6678 | 14163 | cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0); |
8d08fdba MS |
14164 | |
14165 | /* Make a place for the parms */ | |
14166 | pushlevel (0); | |
14167 | current_binding_level->parm_flag = 1; | |
68642fb6 | 14168 | |
8d08fdba MS |
14169 | DECL_IN_AGGR_P (fndecl) = 1; |
14170 | return fndecl; | |
14171 | } | |
14172 | ||
14173 | /* Go through the motions of finishing a function definition. | |
14174 | We don't compile this method until after the whole class has | |
14175 | been processed. | |
14176 | ||
14177 | FINISH_METHOD must return something that looks as though it | |
14178 | came from GROKFIELD (since we are defining a method, after all). | |
14179 | ||
14180 | This is called after parsing the body of the function definition. | |
14181 | STMTS is the chain of statements that makes up the function body. | |
14182 | ||
14183 | DECL is the ..._DECL that `start_method' provided. */ | |
14184 | ||
14185 | tree | |
14186 | finish_method (decl) | |
14187 | tree decl; | |
14188 | { | |
14189 | register tree fndecl = decl; | |
14190 | tree old_initial; | |
8d08fdba MS |
14191 | |
14192 | register tree link; | |
14193 | ||
a1774733 | 14194 | if (decl == void_type_node) |
8d08fdba MS |
14195 | return decl; |
14196 | ||
14197 | old_initial = DECL_INITIAL (fndecl); | |
14198 | ||
14199 | /* Undo the level for the parms (from start_method). | |
14200 | This is like poplevel, but it causes nothing to be | |
14201 | saved. Saving information here confuses symbol-table | |
14202 | output routines. Besides, this information will | |
14203 | be correctly output when this method is actually | |
14204 | compiled. */ | |
14205 | ||
14206 | /* Clear out the meanings of the local variables of this level; | |
14207 | also record in each decl which block it belongs to. */ | |
14208 | ||
14209 | for (link = current_binding_level->names; link; link = TREE_CHAIN (link)) | |
14210 | { | |
14211 | if (DECL_NAME (link) != NULL_TREE) | |
d8f8dca1 | 14212 | pop_binding (DECL_NAME (link), link); |
8d08fdba MS |
14213 | my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163); |
14214 | DECL_CONTEXT (link) = NULL_TREE; | |
14215 | } | |
14216 | ||
8d08fdba MS |
14217 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, |
14218 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
14219 | current_binding_level->parm_flag, | |
5566b478 | 14220 | current_binding_level->keep); |
8d08fdba MS |
14221 | |
14222 | poplevel (0, 0, 0); | |
14223 | ||
14224 | DECL_INITIAL (fndecl) = old_initial; | |
14225 | ||
14226 | /* We used to check if the context of FNDECL was different from | |
14227 | current_class_type as another way to get inside here. This didn't work | |
14228 | for String.cc in libg++. */ | |
14229 | if (DECL_FRIEND_P (fndecl)) | |
14230 | { | |
14231 | CLASSTYPE_INLINE_FRIENDS (current_class_type) | |
14232 | = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type)); | |
14233 | decl = void_type_node; | |
14234 | } | |
14235 | ||
14236 | return decl; | |
14237 | } | |
14238 | \f | |
14239 | /* Called when a new struct TYPE is defined. | |
14240 | If this structure or union completes the type of any previous | |
14241 | variable declaration, lay it out and output its rtl. */ | |
14242 | ||
14243 | void | |
14244 | hack_incomplete_structures (type) | |
14245 | tree type; | |
14246 | { | |
f30432d7 | 14247 | tree *list; |
70adf8a9 | 14248 | struct binding_level *level; |
8d08fdba MS |
14249 | |
14250 | if (!type) /* Don't do this for class templates. */ | |
14251 | return; | |
14252 | ||
70adf8a9 JM |
14253 | if (namespace_bindings_p ()) |
14254 | { | |
14255 | level = 0; | |
14256 | list = &namespace_scope_incomplete; | |
14257 | } | |
14258 | else | |
14259 | { | |
14260 | level = innermost_nonclass_level (); | |
14261 | list = &level->incomplete; | |
14262 | } | |
14263 | ||
14264 | while (1) | |
14265 | { | |
14266 | while (*list) | |
14267 | { | |
14268 | tree decl = TREE_VALUE (*list); | |
14269 | if ((decl && TREE_TYPE (decl) == type) | |
14270 | || (TREE_TYPE (decl) | |
14271 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
14272 | && TREE_TYPE (TREE_TYPE (decl)) == type)) | |
f30432d7 | 14273 | { |
70adf8a9 JM |
14274 | int toplevel = toplevel_bindings_p (); |
14275 | if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
14276 | && TREE_TYPE (TREE_TYPE (decl)) == type) | |
14277 | layout_type (TREE_TYPE (decl)); | |
14278 | layout_decl (decl, 0); | |
14279 | rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0); | |
14280 | if (! toplevel) | |
14281 | { | |
14282 | tree cleanup; | |
14283 | expand_decl (decl); | |
14284 | cleanup = maybe_build_cleanup (decl); | |
14285 | expand_decl_init (decl); | |
14286 | if (! expand_decl_cleanup (decl, cleanup)) | |
14287 | cp_error ("parser lost in parsing declaration of `%D'", | |
14288 | decl); | |
14289 | } | |
14290 | *list = TREE_CHAIN (*list); | |
f30432d7 | 14291 | } |
70adf8a9 JM |
14292 | else |
14293 | list = &TREE_CHAIN (*list); | |
14294 | } | |
14295 | ||
14296 | /* Keep looking through artificial binding levels generated | |
14297 | for local variables. */ | |
14298 | if (level && level->keep == 2) | |
14299 | { | |
14300 | level = level->level_chain; | |
14301 | list = &level->incomplete; | |
f30432d7 MS |
14302 | } |
14303 | else | |
70adf8a9 | 14304 | break; |
f30432d7 | 14305 | } |
8d08fdba MS |
14306 | } |
14307 | ||
8d08fdba | 14308 | /* If DECL is of a type which needs a cleanup, build that cleanup here. |
c73964b2 | 14309 | See build_delete for information about AUTO_DELETE. |
8d08fdba MS |
14310 | |
14311 | Don't build these on the momentary obstack; they must live | |
14312 | the life of the binding contour. */ | |
e92cc029 | 14313 | |
c73964b2 MS |
14314 | static tree |
14315 | maybe_build_cleanup_1 (decl, auto_delete) | |
14316 | tree decl, auto_delete; | |
8d08fdba MS |
14317 | { |
14318 | tree type = TREE_TYPE (decl); | |
44689c12 | 14319 | if (type != error_mark_node && TYPE_NEEDS_DESTRUCTOR (type)) |
8d08fdba | 14320 | { |
80048418 | 14321 | int flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR; |
8d08fdba | 14322 | tree rval; |
8d08fdba | 14323 | |
8d08fdba MS |
14324 | if (TREE_CODE (type) == ARRAY_TYPE) |
14325 | rval = decl; | |
14326 | else | |
14327 | { | |
14328 | mark_addressable (decl); | |
14329 | rval = build_unary_op (ADDR_EXPR, decl, 0); | |
14330 | } | |
14331 | ||
14332 | /* Optimize for space over speed here. */ | |
14333 | if (! TYPE_USES_VIRTUAL_BASECLASSES (type) | |
14334 | || flag_expensive_optimizations) | |
14335 | flags |= LOOKUP_NONVIRTUAL; | |
14336 | ||
c73964b2 | 14337 | rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0); |
8d08fdba MS |
14338 | |
14339 | if (TYPE_USES_VIRTUAL_BASECLASSES (type) | |
14340 | && ! TYPE_HAS_DESTRUCTOR (type)) | |
e1b3e07d | 14341 | rval = build_compound_expr (tree_cons (NULL_TREE, rval, |
051e6fd7 | 14342 | build_tree_list (NULL_TREE, build_vbase_delete (type, decl)))); |
8d08fdba | 14343 | |
8d08fdba MS |
14344 | return rval; |
14345 | } | |
14346 | return 0; | |
14347 | } | |
c73964b2 MS |
14348 | |
14349 | /* If DECL is of a type which needs a cleanup, build that cleanup | |
14350 | here. The cleanup does free the storage with a call to delete. */ | |
14351 | ||
14352 | tree | |
14353 | maybe_build_cleanup_and_delete (decl) | |
14354 | tree decl; | |
14355 | { | |
14356 | return maybe_build_cleanup_1 (decl, integer_three_node); | |
14357 | } | |
14358 | ||
14359 | /* If DECL is of a type which needs a cleanup, build that cleanup | |
14360 | here. The cleanup does not free the storage with a call a delete. */ | |
14361 | ||
14362 | tree | |
14363 | maybe_build_cleanup (decl) | |
14364 | tree decl; | |
14365 | { | |
14366 | return maybe_build_cleanup_1 (decl, integer_two_node); | |
14367 | } | |
8d08fdba MS |
14368 | \f |
14369 | /* Expand a C++ expression at the statement level. | |
14370 | This is needed to ferret out nodes which have UNKNOWN_TYPE. | |
14371 | The C++ type checker should get all of these out when | |
14372 | expressions are combined with other, type-providing, expressions, | |
14373 | leaving only orphan expressions, such as: | |
14374 | ||
e92cc029 | 14375 | &class::bar; / / takes its address, but does nothing with it. */ |
8d08fdba | 14376 | |
8d08fdba MS |
14377 | void |
14378 | cplus_expand_expr_stmt (exp) | |
14379 | tree exp; | |
14380 | { | |
02cac427 NS |
14381 | if (stmts_are_full_exprs_p) |
14382 | exp = convert_to_void (exp, "statement"); | |
68642fb6 | 14383 | |
63c68bb7 | 14384 | #if 0 |
66543169 NS |
14385 | /* We should do this eventually, but right now this causes regex.o from |
14386 | libg++ to miscompile, and tString to core dump. */ | |
14387 | exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp); | |
63c68bb7 | 14388 | #endif |
b3e401c2 | 14389 | |
66543169 NS |
14390 | /* If we don't do this, we end up down inside expand_expr |
14391 | trying to do TYPE_MODE on the ERROR_MARK, and really | |
14392 | go outside the bounds of the type. */ | |
14393 | if (exp != error_mark_node) | |
364460b6 | 14394 | expand_expr_stmt (exp); |
8d08fdba MS |
14395 | } |
14396 | ||
558475f0 | 14397 | /* When a stmt has been parsed, this function is called. */ |
8d08fdba MS |
14398 | |
14399 | void | |
14400 | finish_stmt () | |
14401 | { | |
558475f0 MM |
14402 | /* Always assume this statement was not an expression statement. If |
14403 | it actually was an expression statement, its our callers | |
14404 | responsibility to fix this up. */ | |
14405 | last_expr_type = NULL_TREE; | |
8d08fdba MS |
14406 | } |
14407 | ||
8d08fdba | 14408 | /* Change a static member function definition into a FUNCTION_TYPE, instead |
700f8a87 MS |
14409 | of the METHOD_TYPE that we create when it's originally parsed. |
14410 | ||
14411 | WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES | |
14412 | (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of | |
14413 | other decls. Either pass the addresses of local variables or NULL. */ | |
14414 | ||
8857f91e | 14415 | void |
700f8a87 MS |
14416 | revert_static_member_fn (decl, fn, argtypes) |
14417 | tree *decl, *fn, *argtypes; | |
8d08fdba | 14418 | { |
700f8a87 MS |
14419 | tree tmp; |
14420 | tree function = fn ? *fn : TREE_TYPE (*decl); | |
14421 | tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function); | |
8d08fdba | 14422 | |
68642fb6 | 14423 | if (CP_TYPE_QUALS (TREE_TYPE (TREE_VALUE (args))) |
91063b51 | 14424 | != TYPE_UNQUALIFIED) |
68642fb6 | 14425 | cp_error ("static member function `%#D' declared with type qualifiers", |
91063b51 | 14426 | *decl); |
f30432d7 | 14427 | |
700f8a87 MS |
14428 | args = TREE_CHAIN (args); |
14429 | tmp = build_function_type (TREE_TYPE (function), args); | |
91063b51 | 14430 | tmp = build_qualified_type (tmp, CP_TYPE_QUALS (function)); |
f30432d7 | 14431 | tmp = build_exception_variant (tmp, |
8d08fdba MS |
14432 | TYPE_RAISES_EXCEPTIONS (function)); |
14433 | TREE_TYPE (*decl) = tmp; | |
f30432d7 MS |
14434 | if (DECL_ARGUMENTS (*decl)) |
14435 | DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl)); | |
8d08fdba | 14436 | DECL_STATIC_FUNCTION_P (*decl) = 1; |
700f8a87 MS |
14437 | if (fn) |
14438 | *fn = tmp; | |
14439 | if (argtypes) | |
14440 | *argtypes = args; | |
8d08fdba | 14441 | } |
a4443a08 | 14442 | |
68642fb6 UD |
14443 | /* Initialize the variables used during compilation of a C++ |
14444 | function. */ | |
db5ae43f | 14445 | |
99dccabc MM |
14446 | static void |
14447 | push_cp_function_context (f) | |
14448 | struct function *f; | |
14449 | { | |
68642fb6 UD |
14450 | struct language_function *p |
14451 | = ((struct language_function *) | |
be91309c | 14452 | xcalloc (1, sizeof (struct language_function))); |
99dccabc | 14453 | f->language = p; |
db5ae43f | 14454 | |
b35d4555 MM |
14455 | /* It takes an explicit call to expand_body to generate RTL for a |
14456 | function. */ | |
14457 | expanding_p = 0; | |
f1dedc31 MM |
14458 | |
14459 | /* Whenever we start a new function, we destroy temporaries in the | |
14460 | usual way. */ | |
14461 | stmts_are_full_exprs_p = 1; | |
db5ae43f MS |
14462 | } |
14463 | ||
a8f73d4b MM |
14464 | /* Free the language-specific parts of F, now that we've finished |
14465 | compiling the function. */ | |
db5ae43f | 14466 | |
99dccabc MM |
14467 | static void |
14468 | pop_cp_function_context (f) | |
14469 | struct function *f; | |
db5ae43f | 14470 | { |
d658cd4c MM |
14471 | if (f->language) |
14472 | free (f->language); | |
99dccabc | 14473 | f->language = 0; |
db5ae43f | 14474 | } |
ebfc180f | 14475 | |
59026e79 | 14476 | /* Mark P for GC. */ |
4519c0a8 | 14477 | |
59026e79 MM |
14478 | static void |
14479 | mark_lang_function (p) | |
14480 | struct language_function *p; | |
14481 | { | |
87e3dbc9 MM |
14482 | if (!p) |
14483 | return; | |
14484 | ||
4519c0a8 MM |
14485 | ggc_mark_tree (p->x_named_labels); |
14486 | ggc_mark_tree (p->x_ctor_label); | |
14487 | ggc_mark_tree (p->x_dtor_label); | |
14488 | ggc_mark_tree (p->x_base_init_list); | |
14489 | ggc_mark_tree (p->x_member_init_list); | |
4519c0a8 MM |
14490 | ggc_mark_tree (p->x_current_class_ptr); |
14491 | ggc_mark_tree (p->x_current_class_ref); | |
b35d4555 MM |
14492 | ggc_mark_tree (p->x_eh_spec_try_block); |
14493 | ggc_mark_tree (p->x_scope_stmt_stack); | |
4519c0a8 | 14494 | |
4519c0a8 MM |
14495 | ggc_mark_rtx (p->x_result_rtx); |
14496 | ||
6f80451c | 14497 | mark_stmt_tree (&p->x_stmt_tree); |
a8f73d4b | 14498 | mark_binding_level (&p->bindings); |
4519c0a8 MM |
14499 | } |
14500 | ||
59026e79 MM |
14501 | /* Mark the language-specific data in F for GC. */ |
14502 | ||
a09ba2e0 | 14503 | static void |
59026e79 MM |
14504 | mark_cp_function_context (f) |
14505 | struct function *f; | |
14506 | { | |
14507 | mark_lang_function (f->language); | |
14508 | } | |
4519c0a8 | 14509 | |
5566b478 MS |
14510 | int |
14511 | in_function_p () | |
14512 | { | |
14513 | return function_depth != 0; | |
14514 | } | |
4519c0a8 MM |
14515 | |
14516 | ||
14517 | void | |
b4b8bee7 MM |
14518 | lang_mark_false_label_stack (l) |
14519 | struct label_node *l; | |
4519c0a8 MM |
14520 | { |
14521 | /* C++ doesn't use false_label_stack. It better be NULL. */ | |
87e3dbc9 | 14522 | my_friendly_assert (l == NULL, 19990904); |
4519c0a8 MM |
14523 | } |
14524 | ||
14525 | void | |
14526 | lang_mark_tree (t) | |
14527 | tree t; | |
14528 | { | |
14529 | enum tree_code code = TREE_CODE (t); | |
14530 | if (code == IDENTIFIER_NODE) | |
14531 | { | |
14532 | struct lang_identifier *li = (struct lang_identifier *) t; | |
14533 | struct lang_id2 *li2 = li->x; | |
14534 | ggc_mark_tree (li->namespace_bindings); | |
a8f73d4b | 14535 | ggc_mark_tree (li->bindings); |
4519c0a8 MM |
14536 | ggc_mark_tree (li->class_value); |
14537 | ggc_mark_tree (li->class_template_info); | |
14538 | ||
14539 | if (li2) | |
14540 | { | |
14541 | ggc_mark_tree (li2->label_value); | |
14542 | ggc_mark_tree (li2->implicit_decl); | |
14543 | ggc_mark_tree (li2->error_locus); | |
14544 | } | |
14545 | } | |
87e3dbc9 MM |
14546 | else if (code == CPLUS_BINDING) |
14547 | { | |
14548 | if (BINDING_HAS_LEVEL_P (t)) | |
14549 | mark_binding_level (&BINDING_LEVEL (t)); | |
14550 | else | |
14551 | ggc_mark_tree (BINDING_SCOPE (t)); | |
14552 | ggc_mark_tree (BINDING_VALUE (t)); | |
14553 | } | |
14554 | else if (code == OVERLOAD) | |
14555 | ggc_mark_tree (OVL_FUNCTION (t)); | |
14556 | else if (code == TEMPLATE_PARM_INDEX) | |
14557 | ggc_mark_tree (TEMPLATE_PARM_DECL (t)); | |
4519c0a8 MM |
14558 | else if (TREE_CODE_CLASS (code) == 'd') |
14559 | { | |
14560 | struct lang_decl *ld = DECL_LANG_SPECIFIC (t); | |
14561 | ||
14562 | if (ld) | |
14563 | { | |
d60f72ae | 14564 | ggc_mark (ld); |
af3b4e59 MM |
14565 | if (!DECL_GLOBAL_CTOR_P (t) && !DECL_GLOBAL_DTOR_P (t)) |
14566 | ggc_mark_tree (ld->decl_flags.u2.access); | |
4519c0a8 MM |
14567 | ggc_mark_tree (ld->decl_flags.context); |
14568 | if (TREE_CODE (t) != NAMESPACE_DECL) | |
14569 | ggc_mark_tree (ld->decl_flags.u.template_info); | |
16bb3387 JM |
14570 | else |
14571 | mark_binding_level (&NAMESPACE_LEVEL (t)); | |
4519c0a8 MM |
14572 | if (CAN_HAVE_FULL_LANG_DECL_P (t)) |
14573 | { | |
14574 | ggc_mark_tree (ld->main_decl_variant); | |
14575 | ggc_mark_tree (ld->befriending_classes); | |
14576 | ggc_mark_tree (ld->saved_tree); | |
14577 | if (TREE_CODE (t) == TYPE_DECL) | |
14578 | ggc_mark_tree (ld->u.sorted_fields); | |
59026e79 MM |
14579 | else if (TREE_CODE (t) == FUNCTION_DECL |
14580 | && !DECL_PENDING_INLINE_P (t)) | |
14581 | mark_lang_function (DECL_SAVED_FUNCTION_DATA (t)); | |
4519c0a8 MM |
14582 | } |
14583 | } | |
14584 | } | |
14585 | else if (TREE_CODE_CLASS (code) == 't') | |
14586 | { | |
14587 | struct lang_type *lt = TYPE_LANG_SPECIFIC (t); | |
14588 | ||
68642fb6 | 14589 | if (lt && !(TREE_CODE (t) == POINTER_TYPE |
87e3dbc9 | 14590 | && TREE_CODE (TREE_TYPE (t)) == METHOD_TYPE)) |
4519c0a8 | 14591 | { |
c27db0df | 14592 | ggc_mark (lt); |
4519c0a8 MM |
14593 | ggc_mark_tree (lt->vfields); |
14594 | ggc_mark_tree (lt->vbases); | |
14595 | ggc_mark_tree (lt->tags); | |
14596 | ggc_mark_tree (lt->search_slot); | |
14597 | ggc_mark_tree (lt->size); | |
fee7654e | 14598 | ggc_mark_tree (lt->pure_virtuals); |
4519c0a8 MM |
14599 | ggc_mark_tree (lt->friend_classes); |
14600 | ggc_mark_tree (lt->rtti); | |
14601 | ggc_mark_tree (lt->methods); | |
14602 | ggc_mark_tree (lt->template_info); | |
87e3dbc9 | 14603 | ggc_mark_tree (lt->befriending_classes); |
4519c0a8 | 14604 | } |
87e3dbc9 MM |
14605 | else if (lt) |
14606 | /* In the case of pointer-to-member function types, the | |
14607 | TYPE_LANG_SPECIFIC is really just a tree. */ | |
14608 | ggc_mark_tree ((tree) lt); | |
4519c0a8 MM |
14609 | } |
14610 | } |