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e5e809f4 | 1 | /* Process declarations and variables for C compiler. |
d363e7bf AJ |
2 | Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
3 | 2001 Free Software Foundation, Inc. | |
e5e809f4 | 4 | Contributed by Michael Tiemann (tiemann@cygnus.com) |
8d08fdba MS |
5 | |
6 | This file is part of GNU CC. | |
7 | ||
8 | GNU CC is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU CC is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
20 | the Free Software Foundation, 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
8d08fdba MS |
22 | |
23 | ||
24 | /* Process declarations and symbol lookup for C front end. | |
25 | Also constructs types; the standard scalar types at initialization, | |
26 | and structure, union, array and enum types when they are declared. */ | |
27 | ||
28 | /* ??? not all decl nodes are given the most useful possible | |
29 | line numbers. For example, the CONST_DECLs for enum values. */ | |
30 | ||
8d08fdba | 31 | #include "config.h" |
8d052bc7 | 32 | #include "system.h" |
8d08fdba MS |
33 | #include "tree.h" |
34 | #include "rtl.h" | |
3bdf5ad1 | 35 | #include "expr.h" |
8d08fdba MS |
36 | #include "flags.h" |
37 | #include "cp-tree.h" | |
38 | #include "decl.h" | |
39 | #include "lex.h" | |
49c249e1 JM |
40 | #include "output.h" |
41 | #include "except.h" | |
54f92bfb | 42 | #include "toplev.h" |
7ddedda4 | 43 | #include "../hash.h" |
4519c0a8 | 44 | #include "ggc.h" |
0e9295cf | 45 | #include "tm_p.h" |
8d08fdba | 46 | |
158991b7 | 47 | extern int (*valid_lang_attribute) PARAMS ((tree, tree, tree, tree)); |
62c154ed | 48 | |
255512c1 | 49 | #ifndef BOOL_TYPE_SIZE |
2ef16140 MM |
50 | /* In the new ABI, `bool' has size and alignment `1', on all |
51 | platforms. */ | |
d2e5ee5c | 52 | #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE |
e1cd6e56 | 53 | #endif |
255512c1 | 54 | |
5cce22b6 | 55 | static tree grokparms PARAMS ((tree)); |
158991b7 | 56 | static const char *redeclaration_error_message PARAMS ((tree, tree)); |
8d08fdba | 57 | |
158991b7 | 58 | static void push_binding_level PARAMS ((struct binding_level *, int, |
49c249e1 | 59 | int)); |
158991b7 KG |
60 | static void pop_binding_level PARAMS ((void)); |
61 | static void suspend_binding_level PARAMS ((void)); | |
62 | static void resume_binding_level PARAMS ((struct binding_level *)); | |
63 | static struct binding_level *make_binding_level PARAMS ((void)); | |
64 | static void declare_namespace_level PARAMS ((void)); | |
6625cdb5 | 65 | static int decl_jump_unsafe PARAMS ((tree)); |
158991b7 KG |
66 | static void storedecls PARAMS ((tree)); |
67 | static void require_complete_types_for_parms PARAMS ((tree)); | |
596ea4e5 AS |
68 | static int ambi_op_p PARAMS ((enum tree_code)); |
69 | static int unary_op_p PARAMS ((enum tree_code)); | |
158991b7 KG |
70 | static tree store_bindings PARAMS ((tree, tree)); |
71 | static tree lookup_tag_reverse PARAMS ((tree, tree)); | |
72 | static tree obscure_complex_init PARAMS ((tree, tree)); | |
158991b7 | 73 | static tree lookup_name_real PARAMS ((tree, int, int, int)); |
8e4ce833 | 74 | static void push_local_name PARAMS ((tree)); |
158991b7 | 75 | static void warn_extern_redeclared_static PARAMS ((tree, tree)); |
8e4ce833 | 76 | static tree grok_reference_init PARAMS ((tree, tree, tree)); |
158991b7 | 77 | static tree grokfndecl PARAMS ((tree, tree, tree, tree, int, |
2c73f9f5 | 78 | enum overload_flags, tree, |
7a8f9fa9 | 79 | tree, int, int, int, int, int, int, tree)); |
158991b7 KG |
80 | static tree grokvardecl PARAMS ((tree, tree, RID_BIT_TYPE *, int, int, tree)); |
81 | static tree lookup_tag PARAMS ((enum tree_code, tree, | |
49c249e1 JM |
82 | struct binding_level *, int)); |
83 | static void set_identifier_type_value_with_scope | |
158991b7 | 84 | PARAMS ((tree, tree, struct binding_level *)); |
158991b7 | 85 | static void record_unknown_type PARAMS ((tree, const char *)); |
596ea4e5 | 86 | static tree build_library_fn_1 PARAMS ((tree, enum tree_code, tree)); |
158991b7 KG |
87 | static int member_function_or_else PARAMS ((tree, tree, enum overload_flags)); |
88 | static void bad_specifiers PARAMS ((tree, const char *, int, int, int, int, | |
49c249e1 | 89 | int)); |
158991b7 KG |
90 | static tree maybe_process_template_type_declaration PARAMS ((tree, int, struct binding_level*)); |
91 | static void check_for_uninitialized_const_var PARAMS ((tree)); | |
92 | static unsigned long typename_hash PARAMS ((hash_table_key)); | |
d6edb99e | 93 | static bool typename_compare PARAMS ((hash_table_key, hash_table_key)); |
158991b7 KG |
94 | static void push_binding PARAMS ((tree, tree, struct binding_level*)); |
95 | static int add_binding PARAMS ((tree, tree)); | |
96 | static void pop_binding PARAMS ((tree, tree)); | |
97 | static tree local_variable_p_walkfn PARAMS ((tree *, int *, void *)); | |
98 | static tree find_binding PARAMS ((tree, tree)); | |
99 | static tree select_decl PARAMS ((tree, int)); | |
100 | static int lookup_flags PARAMS ((int, int)); | |
101 | static tree qualify_lookup PARAMS ((tree, int)); | |
102 | static tree record_builtin_java_type PARAMS ((const char *, int)); | |
103 | static const char *tag_name PARAMS ((enum tag_types code)); | |
104 | static void find_class_binding_level PARAMS ((void)); | |
105 | static struct binding_level *innermost_nonclass_level PARAMS ((void)); | |
106 | static void warn_about_implicit_typename_lookup PARAMS ((tree, tree)); | |
107 | static int walk_namespaces_r PARAMS ((tree, walk_namespaces_fn, void *)); | |
108 | static int walk_globals_r PARAMS ((tree, void *)); | |
109 | static void add_decl_to_level PARAMS ((tree, struct binding_level *)); | |
110 | static tree make_label_decl PARAMS ((tree, int)); | |
6625cdb5 JM |
111 | static void use_label PARAMS ((tree)); |
112 | static void check_previous_goto_1 PARAMS ((tree, struct binding_level *, tree, | |
113 | const char *, int)); | |
114 | static void check_previous_goto PARAMS ((struct named_label_use_list *)); | |
115 | static void check_switch_goto PARAMS ((struct binding_level *)); | |
116 | static void check_previous_gotos PARAMS ((tree)); | |
117 | static void pop_label PARAMS ((tree, tree)); | |
158991b7 KG |
118 | static void pop_labels PARAMS ((tree)); |
119 | static void maybe_deduce_size_from_array_init PARAMS ((tree, tree)); | |
120 | static void layout_var_decl PARAMS ((tree)); | |
121 | static void maybe_commonize_var PARAMS ((tree)); | |
122 | static tree check_initializer PARAMS ((tree, tree)); | |
123 | static void make_rtl_for_nonlocal_decl PARAMS ((tree, tree, const char *)); | |
124 | static void push_cp_function_context PARAMS ((struct function *)); | |
125 | static void pop_cp_function_context PARAMS ((struct function *)); | |
126 | static void mark_binding_level PARAMS ((void *)); | |
2f8edb39 | 127 | static void mark_named_label_lists PARAMS ((void *, void *)); |
158991b7 KG |
128 | static void mark_cp_function_context PARAMS ((struct function *)); |
129 | static void mark_saved_scope PARAMS ((void *)); | |
ae499cce | 130 | static void mark_lang_function PARAMS ((struct cp_language_function *)); |
158991b7 | 131 | static void save_function_data PARAMS ((tree)); |
f444e36b | 132 | static void check_function_type PARAMS ((tree, tree)); |
158991b7 KG |
133 | static void destroy_local_var PARAMS ((tree)); |
134 | static void finish_constructor_body PARAMS ((void)); | |
135 | static void finish_destructor_body PARAMS ((void)); | |
136 | static tree create_array_type_for_decl PARAMS ((tree, tree, tree)); | |
137 | static tree get_atexit_node PARAMS ((void)); | |
138 | static tree get_dso_handle_node PARAMS ((void)); | |
139 | static tree start_cleanup_fn PARAMS ((void)); | |
140 | static void end_cleanup_fn PARAMS ((void)); | |
0ba8a114 | 141 | static tree cp_make_fname_decl PARAMS ((tree, int)); |
d43829f9 | 142 | static void initialize_predefined_identifiers PARAMS ((void)); |
5362b086 | 143 | static tree check_special_function_return_type |
1f84ec23 | 144 | PARAMS ((special_function_kind, tree, tree)); |
596ea4e5 AS |
145 | static tree push_cp_library_fn PARAMS ((enum tree_code, tree)); |
146 | static tree build_cp_library_fn PARAMS ((tree, enum tree_code, tree)); | |
f444e36b | 147 | static void store_parm_decls PARAMS ((tree)); |
d363e7bf | 148 | static int cp_missing_noreturn_ok_p PARAMS ((tree)); |
8d08fdba | 149 | |
69ac77ce | 150 | #if defined (DEBUG_CP_BINDING_LEVELS) |
158991b7 | 151 | static void indent PARAMS ((void)); |
69ac77ce JL |
152 | #endif |
153 | ||
8d08fdba MS |
154 | /* Erroneous argument lists can use this *IFF* they do not modify it. */ |
155 | tree error_mark_list; | |
156 | ||
7f4edbcb | 157 | /* The following symbols are subsumed in the cp_global_trees array, and |
68642fb6 | 158 | listed here individually for documentation purposes. |
8d08fdba | 159 | |
7f4edbcb BS |
160 | C++ extensions |
161 | tree wchar_decl_node; | |
37c46b43 | 162 | |
7f4edbcb BS |
163 | tree vtable_entry_type; |
164 | tree delta_type_node; | |
165 | #if 0 | |
166 | Old rtti stuff. | |
167 | tree __baselist_desc_type_node; | |
168 | tree __i_desc_type_node, __m_desc_type_node; | |
169 | tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type; | |
946dc1c8 | 170 | #endif |
7f4edbcb BS |
171 | tree __t_desc_type_node; |
172 | #if 0 | |
173 | tree __tp_desc_type_node; | |
174 | #endif | |
db1147b2 | 175 | tree ti_desc_type_node; |
1f4cb92b | 176 | tree bltn_desc_type_node, ptr_desc_type_node; |
db1147b2 NS |
177 | tree ary_desc_type_node, func_desc_type_node, enum_desc_type_node; |
178 | tree class_desc_type_node, si_class_desc_type_node, vmi_class_desc_type_node; | |
387769ed | 179 | tree ptm_desc_type_node; |
db1147b2 | 180 | tree base_desc_type_node; |
7f4edbcb BS |
181 | #if 0 |
182 | Not needed yet? May be needed one day? | |
183 | tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type; | |
184 | tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type; | |
185 | tree __ptmf_desc_array_type, __ptmd_desc_array_type; | |
946dc1c8 | 186 | #endif |
8d08fdba | 187 | |
7f4edbcb BS |
188 | tree class_type_node, record_type_node, union_type_node, enum_type_node; |
189 | tree unknown_type_node; | |
8d08fdba | 190 | |
7f4edbcb | 191 | Array type `vtable_entry_type[]' |
8d08fdba | 192 | |
7f4edbcb BS |
193 | tree vtbl_type_node; |
194 | tree vtbl_ptr_type_node; | |
8d08fdba | 195 | |
2854d3c6 | 196 | Namespaces, |
8d08fdba | 197 | |
7f4edbcb | 198 | tree std_node; |
2854d3c6 | 199 | tree abi_node; |
8d08fdba | 200 | |
7f4edbcb BS |
201 | A FUNCTION_DECL which can call `abort'. Not necessarily the |
202 | one that the user will declare, but sufficient to be called | |
203 | by routines that want to abort the program. | |
8d08fdba | 204 | |
7f4edbcb | 205 | tree abort_fndecl; |
8d08fdba | 206 | |
7f4edbcb | 207 | The FUNCTION_DECL for the default `::operator delete'. |
2986ae00 | 208 | |
7f4edbcb | 209 | tree global_delete_fndecl; |
8d08fdba | 210 | |
7f4edbcb | 211 | Used by RTTI |
669ec2b4 JM |
212 | tree type_info_type_node, tinfo_decl_id, tinfo_decl_type; |
213 | tree tinfo_var_id; | |
214 | ||
7f4edbcb | 215 | */ |
8d08fdba | 216 | |
7f4edbcb | 217 | tree cp_global_trees[CPTI_MAX]; |
8d08fdba | 218 | |
2c73f9f5 | 219 | /* Indicates that there is a type value in some namespace, although |
7f4edbcb | 220 | that is not necessarily in scope at the moment. */ |
2c73f9f5 ML |
221 | |
222 | static tree global_type_node; | |
223 | ||
6bcedb4e MM |
224 | /* If non-zero, this is the number of times we have entered the `std' |
225 | namespace when we are treating that namespace as an alias for the | |
226 | global namespace. */ | |
227 | static int in_fake_std; | |
6633d636 | 228 | |
3e3f722c ML |
229 | /* Expect only namespace names now. */ |
230 | static int only_namespace_names; | |
231 | ||
6625cdb5 JM |
232 | /* Used only for jumps to as-yet undefined labels, since jumps to |
233 | defined labels can have their validity checked immediately. */ | |
234 | ||
235 | struct named_label_use_list | |
e349ee73 MS |
236 | { |
237 | struct binding_level *binding_level; | |
238 | tree names_in_scope; | |
239 | tree label_decl; | |
9c0758dd | 240 | const char *filename_o_goto; |
e349ee73 | 241 | int lineno_o_goto; |
6625cdb5 | 242 | struct named_label_use_list *next; |
e349ee73 MS |
243 | }; |
244 | ||
ed5511d9 | 245 | #define named_label_uses cp_function_chain->x_named_label_uses |
8d08fdba | 246 | |
8e4ce833 JJ |
247 | #define local_names cp_function_chain->x_local_names |
248 | ||
8d08fdba MS |
249 | /* A list of objects which have constructors or destructors |
250 | which reside in the global scope. The decl is stored in | |
251 | the TREE_VALUE slot and the initializer is stored | |
252 | in the TREE_PURPOSE slot. */ | |
253 | tree static_aggregates; | |
254 | ||
8d08fdba MS |
255 | /* -- end of C++ */ |
256 | ||
81b3411c | 257 | /* A node for the integer constants 2, and 3. */ |
d11ad92e | 258 | |
81b3411c | 259 | tree integer_two_node, integer_three_node; |
8d08fdba | 260 | |
8d08fdba MS |
261 | /* Parsing a function declarator leaves here a chain of structure |
262 | and enum types declared in the parmlist. */ | |
263 | ||
264 | static tree last_function_parm_tags; | |
265 | ||
8d08fdba | 266 | /* Similar, for last_function_parm_tags. */ |
9cd64686 | 267 | tree last_function_parms; |
8d08fdba MS |
268 | static tree current_function_parm_tags; |
269 | ||
6625cdb5 JM |
270 | /* A list of all LABEL_DECLs in the function that have names. Here so |
271 | we can clear out their names' definitions at the end of the | |
272 | function, and so we can check the validity of jumps to these labels. */ | |
273 | ||
274 | struct named_label_list | |
275 | { | |
276 | struct binding_level *binding_level; | |
277 | tree names_in_scope; | |
278 | tree old_value; | |
279 | tree label_decl; | |
280 | tree bad_decls; | |
6625cdb5 | 281 | struct named_label_list *next; |
826840d9 RH |
282 | unsigned int in_try_scope : 1; |
283 | unsigned int in_catch_scope : 1; | |
6625cdb5 | 284 | }; |
8d08fdba | 285 | |
4519c0a8 | 286 | #define named_labels cp_function_chain->x_named_labels |
8d08fdba | 287 | |
8d08fdba MS |
288 | /* Set to 0 at beginning of a function definition, and whenever |
289 | a label (case or named) is defined. Set to value of expression | |
290 | returned from function when that value can be transformed into | |
291 | a named return value. */ | |
292 | ||
293 | tree current_function_return_value; | |
294 | ||
b8458e3e JM |
295 | /* Nonzero means use the ISO C94 dialect of C. */ |
296 | ||
297 | int flag_isoc94; | |
298 | ||
83309c26 | 299 | /* Nonzero means use the ISO C99 dialect of C. */ |
68642fb6 | 300 | |
83309c26 | 301 | int flag_isoc99; |
68642fb6 | 302 | |
93e2382f JM |
303 | /* Nonzero means we are a hosted implementation for code shared with C. */ |
304 | ||
305 | int flag_hosted = 1; | |
306 | ||
307 | /* Nonzero means add default format_arg attributes for functions not | |
308 | in ISO C. */ | |
309 | ||
310 | int flag_noniso_default_format_attributes = 1; | |
311 | ||
8d08fdba MS |
312 | /* Nonzero if we want to conserve space in the .o files. We do this |
313 | by putting uninitialized data and runtime initialized data into | |
ddd5a7c1 | 314 | .common instead of .data at the expense of not flagging multiple |
8d08fdba MS |
315 | definitions. */ |
316 | extern int flag_conserve_space; | |
8d08fdba | 317 | \f |
51c184be | 318 | /* C and C++ flags are in decl2.c. */ |
8d08fdba | 319 | |
51c184be | 320 | /* Flag used when debugging spew.c */ |
8d08fdba MS |
321 | |
322 | extern int spew_debug; | |
323 | ||
e92cc029 MS |
324 | /* A expression of value 0 with the same precision as a sizetype |
325 | node, but signed. */ | |
326 | tree signed_size_zero_node; | |
327 | ||
0c8feefe MM |
328 | /* The name of the anonymous namespace, throughout this translation |
329 | unit. */ | |
330 | tree anonymous_namespace_name; | |
331 | ||
b2244c65 MM |
332 | /* The number of function bodies which we are currently processing. |
333 | (Zero if we are at namespace scope, one inside the body of a | |
334 | function, two inside the body of a function in a local class, etc.) */ | |
335 | int function_depth; | |
8d08fdba MS |
336 | \f |
337 | /* For each binding contour we allocate a binding_level structure | |
e92cc029 MS |
338 | which records the names defined in that contour. |
339 | Contours include: | |
340 | 0) the global one | |
341 | 1) one for each function definition, | |
342 | where internal declarations of the parameters appear. | |
343 | 2) one for each compound statement, | |
344 | to record its declarations. | |
345 | ||
346 | The current meaning of a name can be found by searching the levels | |
347 | from the current one out to the global one. | |
348 | ||
349 | Off to the side, may be the class_binding_level. This exists only | |
350 | to catch class-local declarations. It is otherwise nonexistent. | |
351 | ||
352 | Also there may be binding levels that catch cleanups that must be | |
d8f8dca1 MM |
353 | run when exceptions occur. Thus, to see whether a name is bound in |
354 | the current scope, it is not enough to look in the | |
355 | CURRENT_BINDING_LEVEL. You should use lookup_name_current_level | |
356 | instead. */ | |
8d08fdba MS |
357 | |
358 | /* Note that the information in the `names' component of the global contour | |
359 | is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */ | |
360 | ||
361 | struct binding_level | |
362 | { | |
363 | /* A chain of _DECL nodes for all variables, constants, functions, | |
e92cc029 | 364 | and typedef types. These are in the reverse of the order |
f181d4ae MM |
365 | supplied. There may be OVERLOADs on this list, too, but they |
366 | are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */ | |
8d08fdba MS |
367 | tree names; |
368 | ||
e92cc029 MS |
369 | /* A list of structure, union and enum definitions, for looking up |
370 | tag names. | |
371 | It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name, | |
372 | or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE, | |
373 | or ENUMERAL_TYPE node. | |
374 | ||
375 | C++: the TREE_VALUE nodes can be simple types for | |
376 | component_bindings. */ | |
8d08fdba MS |
377 | tree tags; |
378 | ||
2c73f9f5 ML |
379 | /* A list of USING_DECL nodes. */ |
380 | tree usings; | |
381 | ||
ea9635c7 ML |
382 | /* A list of used namespaces. PURPOSE is the namespace, |
383 | VALUE the common ancestor with this binding_level's namespace. */ | |
384 | tree using_directives; | |
385 | ||
f181d4ae MM |
386 | /* If this binding level is the binding level for a class, then |
387 | class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node | |
76191fdd | 388 | is the name of an entity bound in the class. The TREE_TYPE is |
d8f8dca1 | 389 | the DECL bound by this name in the class. */ |
8d08fdba MS |
390 | tree class_shadowed; |
391 | ||
f181d4ae | 392 | /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and |
76191fdd NS |
393 | is used for all binding levels. In addition the TREE_VALUE is the |
394 | IDENTIFIER_TYPE_VALUE before we entered the class. */ | |
8d08fdba MS |
395 | tree type_shadowed; |
396 | ||
acef433b MM |
397 | /* A TREE_LIST. Each TREE_VALUE is the LABEL_DECL for a local |
398 | label in this scope. The TREE_PURPOSE is the previous value of | |
399 | the IDENTIFIER_LABEL VALUE. */ | |
400 | tree shadowed_labels; | |
401 | ||
8d08fdba MS |
402 | /* For each level (except not the global one), |
403 | a chain of BLOCK nodes for all the levels | |
404 | that were entered and exited one level down. */ | |
405 | tree blocks; | |
406 | ||
70adf8a9 JM |
407 | /* The _TYPE node for this level, if parm_flag == 2. */ |
408 | tree this_class; | |
409 | ||
8d08fdba MS |
410 | /* The binding level which this one is contained in (inherits from). */ |
411 | struct binding_level *level_chain; | |
412 | ||
f30432d7 | 413 | /* List of decls in `names' that have incomplete |
8d08fdba | 414 | structure or union types. */ |
f30432d7 | 415 | tree incomplete; |
8d08fdba | 416 | |
8d6e462b | 417 | /* List of VAR_DECLS saved from a previous for statement. |
cab1f180 | 418 | These would be dead in ISO-conforming code, but might |
f181d4ae MM |
419 | be referenced in ARM-era code. These are stored in a |
420 | TREE_LIST; the TREE_VALUE is the actual declaration. */ | |
8d6e462b PB |
421 | tree dead_vars_from_for; |
422 | ||
8d08fdba | 423 | /* 1 for the level that holds the parameters of a function. |
74b846e0 MM |
424 | 2 for the level that holds a class declaration. */ |
425 | unsigned parm_flag : 2; | |
8d08fdba MS |
426 | |
427 | /* 1 means make a BLOCK for this level regardless of all else. | |
428 | 2 for temporary binding contours created by the compiler. */ | |
74b846e0 | 429 | unsigned keep : 2; |
8d08fdba MS |
430 | |
431 | /* Nonzero if this level "doesn't exist" for tags. */ | |
432 | unsigned tag_transparent : 1; | |
433 | ||
434 | /* Nonzero if this level can safely have additional | |
435 | cleanup-needing variables added to it. */ | |
436 | unsigned more_cleanups_ok : 1; | |
437 | unsigned have_cleanups : 1; | |
438 | ||
74b846e0 | 439 | /* Nonzero if this scope is for storing the decls for template |
5566b478 MS |
440 | parameters and generic decls; these decls will be discarded and |
441 | replaced with a TEMPLATE_DECL. */ | |
74b846e0 MM |
442 | unsigned template_parms_p : 1; |
443 | ||
5362b086 | 444 | /* Nonzero if this scope corresponds to the `<>' in a |
74b846e0 MM |
445 | `template <>' clause. Whenever this flag is set, |
446 | TEMPLATE_PARMS_P will be set as well. */ | |
447 | unsigned template_spec_p : 1; | |
8d08fdba | 448 | |
a9aedbc2 MS |
449 | /* This is set for a namespace binding level. */ |
450 | unsigned namespace_p : 1; | |
451 | ||
2ee887f2 | 452 | /* True if this level is that of a for-statement where we need to |
cab1f180 | 453 | worry about ambiguous (ARM or ISO) scope rules. */ |
8d6e462b PB |
454 | unsigned is_for_scope : 1; |
455 | ||
826840d9 RH |
456 | /* True if this level corresponds to a TRY block. Currently this |
457 | information is only available while building the tree structure. */ | |
458 | unsigned is_try_scope : 1; | |
227cf171 | 459 | |
826840d9 RH |
460 | /* True if this level corresponds to a CATCH block. Currently this |
461 | information is only available while building the tree structure. */ | |
462 | unsigned is_catch_scope : 1; | |
463 | ||
464 | /* Three bits left for this word. */ | |
8d08fdba MS |
465 | |
466 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
467 | /* Binding depth at which this level began. */ | |
468 | unsigned binding_depth; | |
469 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
470 | }; | |
471 | ||
472 | #define NULL_BINDING_LEVEL ((struct binding_level *) NULL) | |
68642fb6 | 473 | |
8f032717 | 474 | /* The binding level currently in effect. */ |
8d08fdba | 475 | |
a8f73d4b | 476 | #define current_binding_level \ |
52a11cbf | 477 | (cfun && cp_function_chain->bindings \ |
d363e7bf | 478 | ? cp_function_chain->bindings \ |
a8f73d4b | 479 | : scope_chain->bindings) |
8d08fdba MS |
480 | |
481 | /* The binding level of the current class, if any. */ | |
482 | ||
9cd64686 | 483 | #define class_binding_level scope_chain->class_bindings |
8d08fdba | 484 | |
8d08fdba MS |
485 | /* A chain of binding_level structures awaiting reuse. */ |
486 | ||
487 | static struct binding_level *free_binding_level; | |
488 | ||
489 | /* The outermost binding level, for names of file scope. | |
490 | This is created when the compiler is started and exists | |
491 | through the entire run. */ | |
492 | ||
493 | static struct binding_level *global_binding_level; | |
494 | ||
8d08fdba MS |
495 | /* Nonzero means unconditionally make a BLOCK for the next level pushed. */ |
496 | ||
497 | static int keep_next_level_flag; | |
498 | ||
499 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
500 | static int binding_depth = 0; | |
501 | static int is_class_level = 0; | |
502 | ||
503 | static void | |
504 | indent () | |
505 | { | |
506 | register unsigned i; | |
507 | ||
508 | for (i = 0; i < binding_depth*2; i++) | |
509 | putc (' ', stderr); | |
510 | } | |
511 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
512 | ||
158991b7 | 513 | static tree pushdecl_with_scope PARAMS ((tree, struct binding_level *)); |
8d08fdba MS |
514 | |
515 | static void | |
516 | push_binding_level (newlevel, tag_transparent, keep) | |
517 | struct binding_level *newlevel; | |
518 | int tag_transparent, keep; | |
519 | { | |
520 | /* Add this level to the front of the chain (stack) of levels that | |
521 | are active. */ | |
961192e1 | 522 | memset ((char*) newlevel, 0, sizeof (struct binding_level)); |
8f032717 | 523 | newlevel->level_chain = current_binding_level; |
8d08fdba MS |
524 | current_binding_level = newlevel; |
525 | newlevel->tag_transparent = tag_transparent; | |
526 | newlevel->more_cleanups_ok = 1; | |
227cf171 | 527 | |
8d08fdba MS |
528 | newlevel->keep = keep; |
529 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
530 | newlevel->binding_depth = binding_depth; | |
531 | indent (); | |
532 | fprintf (stderr, "push %s level 0x%08x line %d\n", | |
533 | (is_class_level) ? "class" : "block", newlevel, lineno); | |
534 | is_class_level = 0; | |
535 | binding_depth++; | |
536 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
537 | } | |
538 | ||
8f032717 MM |
539 | /* Find the innermost enclosing class scope, and reset |
540 | CLASS_BINDING_LEVEL appropriately. */ | |
541 | ||
542 | static void | |
543 | find_class_binding_level () | |
544 | { | |
545 | struct binding_level *level = current_binding_level; | |
546 | ||
547 | while (level && level->parm_flag != 2) | |
548 | level = level->level_chain; | |
549 | if (level && level->parm_flag == 2) | |
550 | class_binding_level = level; | |
551 | else | |
552 | class_binding_level = 0; | |
553 | } | |
554 | ||
8d08fdba MS |
555 | static void |
556 | pop_binding_level () | |
557 | { | |
8d08fdba MS |
558 | if (global_binding_level) |
559 | { | |
2c73f9f5 | 560 | /* Cannot pop a level, if there are none left to pop. */ |
8d08fdba MS |
561 | if (current_binding_level == global_binding_level) |
562 | my_friendly_abort (123); | |
563 | } | |
564 | /* Pop the current level, and free the structure for reuse. */ | |
565 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
566 | binding_depth--; | |
567 | indent (); | |
568 | fprintf (stderr, "pop %s level 0x%08x line %d\n", | |
569 | (is_class_level) ? "class" : "block", | |
570 | current_binding_level, lineno); | |
571 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
572 | { |
573 | indent (); | |
574 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
575 | } | |
8d08fdba MS |
576 | is_class_level = 0; |
577 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
578 | { | |
579 | register struct binding_level *level = current_binding_level; | |
580 | current_binding_level = current_binding_level->level_chain; | |
581 | level->level_chain = free_binding_level; | |
582 | #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
583 | if (level->binding_depth != binding_depth) | |
584 | abort (); | |
585 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
8f032717 MM |
586 | free_binding_level = level; |
587 | find_class_binding_level (); | |
8d08fdba MS |
588 | } |
589 | } | |
a9aedbc2 MS |
590 | |
591 | static void | |
592 | suspend_binding_level () | |
593 | { | |
594 | if (class_binding_level) | |
595 | current_binding_level = class_binding_level; | |
596 | ||
597 | if (global_binding_level) | |
598 | { | |
2c73f9f5 | 599 | /* Cannot suspend a level, if there are none left to suspend. */ |
a9aedbc2 MS |
600 | if (current_binding_level == global_binding_level) |
601 | my_friendly_abort (123); | |
602 | } | |
603 | /* Suspend the current level. */ | |
604 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
605 | binding_depth--; | |
606 | indent (); | |
607 | fprintf (stderr, "suspend %s level 0x%08x line %d\n", | |
608 | (is_class_level) ? "class" : "block", | |
609 | current_binding_level, lineno); | |
610 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
611 | { |
612 | indent (); | |
613 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
614 | } | |
a9aedbc2 MS |
615 | is_class_level = 0; |
616 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
8f032717 MM |
617 | current_binding_level = current_binding_level->level_chain; |
618 | find_class_binding_level (); | |
a9aedbc2 MS |
619 | } |
620 | ||
824b9a4c | 621 | static void |
a9aedbc2 MS |
622 | resume_binding_level (b) |
623 | struct binding_level *b; | |
624 | { | |
2c73f9f5 ML |
625 | /* Resuming binding levels is meant only for namespaces, |
626 | and those cannot nest into classes. */ | |
627 | my_friendly_assert(!class_binding_level, 386); | |
628 | /* Also, resuming a non-directly nested namespace is a no-no. */ | |
629 | my_friendly_assert(b->level_chain == current_binding_level, 386); | |
a9aedbc2 MS |
630 | current_binding_level = b; |
631 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
632 | b->binding_depth = binding_depth; | |
633 | indent (); | |
634 | fprintf (stderr, "resume %s level 0x%08x line %d\n", | |
635 | (is_class_level) ? "class" : "block", b, lineno); | |
636 | is_class_level = 0; | |
637 | binding_depth++; | |
638 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
639 | } | |
8d08fdba | 640 | \f |
cffa8729 MS |
641 | /* Create a new `struct binding_level'. */ |
642 | ||
643 | static | |
644 | struct binding_level * | |
645 | make_binding_level () | |
646 | { | |
647 | /* NOSTRICT */ | |
648 | return (struct binding_level *) xmalloc (sizeof (struct binding_level)); | |
649 | } | |
650 | ||
8d08fdba MS |
651 | /* Nonzero if we are currently in the global binding level. */ |
652 | ||
653 | int | |
654 | global_bindings_p () | |
655 | { | |
656 | return current_binding_level == global_binding_level; | |
657 | } | |
658 | ||
8f032717 MM |
659 | /* Return the innermost binding level that is not for a class scope. */ |
660 | ||
661 | static struct binding_level * | |
662 | innermost_nonclass_level () | |
663 | { | |
664 | struct binding_level *b; | |
665 | ||
666 | b = current_binding_level; | |
667 | while (b->parm_flag == 2) | |
668 | b = b->level_chain; | |
669 | ||
670 | return b; | |
671 | } | |
672 | ||
a9aedbc2 MS |
673 | /* Nonzero if we are currently in a toplevel binding level. This |
674 | means either the global binding level or a namespace in a toplevel | |
8f032717 | 675 | binding level. Since there are no non-toplevel namespace levels, |
74b846e0 MM |
676 | this really means any namespace or template parameter level. We |
677 | also include a class whose context is toplevel. */ | |
a9aedbc2 MS |
678 | |
679 | int | |
680 | toplevel_bindings_p () | |
681 | { | |
8f032717 MM |
682 | struct binding_level *b = innermost_nonclass_level (); |
683 | ||
74b846e0 | 684 | return b->namespace_p || b->template_parms_p; |
a9aedbc2 MS |
685 | } |
686 | ||
8f032717 MM |
687 | /* Nonzero if this is a namespace scope, or if we are defining a class |
688 | which is itself at namespace scope, or whose enclosing class is | |
689 | such a class, etc. */ | |
a9aedbc2 | 690 | |
7bdbfa05 | 691 | int |
a9aedbc2 MS |
692 | namespace_bindings_p () |
693 | { | |
8f032717 MM |
694 | struct binding_level *b = innermost_nonclass_level (); |
695 | ||
696 | return b->namespace_p; | |
a9aedbc2 MS |
697 | } |
698 | ||
f1dedc31 MM |
699 | /* If KEEP is non-zero, make a BLOCK node for the next binding level, |
700 | unconditionally. Otherwise, use the normal logic to decide whether | |
701 | or not to create a BLOCK. */ | |
702 | ||
8d08fdba | 703 | void |
f1dedc31 MM |
704 | keep_next_level (keep) |
705 | int keep; | |
8d08fdba | 706 | { |
f1dedc31 | 707 | keep_next_level_flag = keep; |
8d08fdba MS |
708 | } |
709 | ||
710 | /* Nonzero if the current level needs to have a BLOCK made. */ | |
711 | ||
712 | int | |
713 | kept_level_p () | |
714 | { | |
715 | return (current_binding_level->blocks != NULL_TREE | |
716 | || current_binding_level->keep | |
717 | || current_binding_level->names != NULL_TREE | |
718 | || (current_binding_level->tags != NULL_TREE | |
719 | && !current_binding_level->tag_transparent)); | |
720 | } | |
721 | ||
824b9a4c | 722 | static void |
a9aedbc2 MS |
723 | declare_namespace_level () |
724 | { | |
725 | current_binding_level->namespace_p = 1; | |
726 | } | |
727 | ||
74b846e0 MM |
728 | /* Returns non-zero if this scope was created to store template |
729 | parameters. */ | |
730 | ||
8d08fdba | 731 | int |
74b846e0 | 732 | template_parm_scope_p () |
8d08fdba | 733 | { |
74b846e0 MM |
734 | return current_binding_level->template_parms_p; |
735 | } | |
736 | ||
737 | /* Returns the kind of template specialization we are currently | |
738 | processing, given that it's declaration contained N_CLASS_SCOPES | |
739 | explicit scope qualifications. */ | |
740 | ||
741 | tmpl_spec_kind | |
742 | current_tmpl_spec_kind (n_class_scopes) | |
743 | int n_class_scopes; | |
744 | { | |
745 | int n_template_parm_scopes = 0; | |
746 | int seen_specialization_p = 0; | |
747 | int innermost_specialization_p = 0; | |
748 | struct binding_level *b; | |
749 | ||
750 | /* Scan through the template parameter scopes. */ | |
751 | for (b = current_binding_level; b->template_parms_p; b = b->level_chain) | |
752 | { | |
753 | /* If we see a specialization scope inside a parameter scope, | |
754 | then something is wrong. That corresponds to a declaration | |
755 | like: | |
756 | ||
757 | template <class T> template <> ... | |
758 | ||
759 | which is always illegal since [temp.expl.spec] forbids the | |
760 | specialization of a class member template if the enclosing | |
761 | class templates are not explicitly specialized as well. */ | |
762 | if (b->template_spec_p) | |
763 | { | |
764 | if (n_template_parm_scopes == 0) | |
765 | innermost_specialization_p = 1; | |
766 | else | |
767 | seen_specialization_p = 1; | |
768 | } | |
769 | else if (seen_specialization_p == 1) | |
770 | return tsk_invalid_member_spec; | |
771 | ||
772 | ++n_template_parm_scopes; | |
773 | } | |
774 | ||
775 | /* Handle explicit instantiations. */ | |
776 | if (processing_explicit_instantiation) | |
777 | { | |
778 | if (n_template_parm_scopes != 0) | |
779 | /* We've seen a template parameter list during an explicit | |
780 | instantiation. For example: | |
781 | ||
782 | template <class T> template void f(int); | |
783 | ||
784 | This is erroneous. */ | |
785 | return tsk_invalid_expl_inst; | |
786 | else | |
787 | return tsk_expl_inst; | |
788 | } | |
789 | ||
790 | if (n_template_parm_scopes < n_class_scopes) | |
791 | /* We've not seen enough template headers to match all the | |
792 | specialized classes present. For example: | |
793 | ||
794 | template <class T> void R<T>::S<T>::f(int); | |
795 | ||
796 | This is illegal; there needs to be one set of template | |
797 | parameters for each class. */ | |
798 | return tsk_insufficient_parms; | |
799 | else if (n_template_parm_scopes == n_class_scopes) | |
800 | /* We're processing a non-template declaration (even though it may | |
801 | be a member of a template class.) For example: | |
802 | ||
803 | template <class T> void S<T>::f(int); | |
804 | ||
805 | The `class T' maches the `S<T>', leaving no template headers | |
806 | corresponding to the `f'. */ | |
807 | return tsk_none; | |
808 | else if (n_template_parm_scopes > n_class_scopes + 1) | |
809 | /* We've got too many template headers. For example: | |
810 | ||
811 | template <> template <class T> void f (T); | |
812 | ||
813 | There need to be more enclosing classes. */ | |
814 | return tsk_excessive_parms; | |
815 | else | |
816 | /* This must be a template. It's of the form: | |
817 | ||
818 | template <class T> template <class U> void S<T>::f(U); | |
819 | ||
820 | This is a specialization if the innermost level was a | |
821 | specialization; otherwise it's just a definition of the | |
822 | template. */ | |
823 | return innermost_specialization_p ? tsk_expl_spec : tsk_template; | |
8d08fdba MS |
824 | } |
825 | ||
826 | void | |
827 | set_class_shadows (shadows) | |
828 | tree shadows; | |
829 | { | |
830 | class_binding_level->class_shadowed = shadows; | |
831 | } | |
832 | ||
833 | /* Enter a new binding level. | |
834 | If TAG_TRANSPARENT is nonzero, do so only for the name space of variables, | |
835 | not for that of tags. */ | |
836 | ||
837 | void | |
838 | pushlevel (tag_transparent) | |
839 | int tag_transparent; | |
840 | { | |
b35d4555 | 841 | struct binding_level *newlevel; |
8d08fdba | 842 | |
01d939e8 | 843 | if (cfun && !doing_semantic_analysis_p ()) |
b35d4555 | 844 | return; |
8d08fdba | 845 | |
b35d4555 | 846 | /* Reuse or create a struct for this binding level. */ |
8d08fdba MS |
847 | #if defined(DEBUG_CP_BINDING_LEVELS) |
848 | if (0) | |
849 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
850 | if (free_binding_level) | |
851 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
852 | { | |
853 | newlevel = free_binding_level; | |
854 | free_binding_level = free_binding_level->level_chain; | |
855 | } | |
856 | else | |
acef433b | 857 | newlevel = make_binding_level (); |
cffa8729 | 858 | |
8d08fdba MS |
859 | push_binding_level (newlevel, tag_transparent, keep_next_level_flag); |
860 | GNU_xref_start_scope ((HOST_WIDE_INT) newlevel); | |
861 | keep_next_level_flag = 0; | |
862 | } | |
863 | ||
bd0d5d4a JM |
864 | /* We're defining an object of type TYPE. If it needs a cleanup, but |
865 | we're not allowed to add any more objects with cleanups to the current | |
866 | scope, create a new binding level. */ | |
867 | ||
868 | void | |
869 | maybe_push_cleanup_level (type) | |
870 | tree type; | |
871 | { | |
872 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type) | |
873 | && current_binding_level->more_cleanups_ok == 0) | |
874 | { | |
875 | keep_next_level (2); | |
876 | pushlevel (1); | |
877 | clear_last_expr (); | |
878 | add_scope_stmt (/*begin_p=*/1, /*partial_p=*/1); | |
879 | } | |
880 | } | |
881 | ||
74b846e0 MM |
882 | /* Enter a new scope. The KIND indicates what kind of scope is being |
883 | created. */ | |
884 | ||
885 | void | |
886 | begin_scope (sk) | |
887 | scope_kind sk; | |
888 | { | |
889 | pushlevel (0); | |
890 | ||
891 | switch (sk) | |
892 | { | |
893 | case sk_template_spec: | |
894 | current_binding_level->template_spec_p = 1; | |
895 | /* Fall through. */ | |
896 | ||
897 | case sk_template_parms: | |
898 | current_binding_level->template_parms_p = 1; | |
899 | break; | |
900 | ||
901 | default: | |
902 | my_friendly_abort (20000309); | |
903 | } | |
904 | } | |
905 | ||
906 | /* Exit the current scope. */ | |
907 | ||
908 | void | |
909 | finish_scope () | |
910 | { | |
911 | poplevel (0, 0, 0); | |
912 | } | |
913 | ||
5566b478 | 914 | void |
8d6e462b PB |
915 | note_level_for_for () |
916 | { | |
917 | current_binding_level->is_for_scope = 1; | |
918 | } | |
919 | ||
6625cdb5 JM |
920 | /* Record that the current binding level represents a try block. */ |
921 | ||
922 | void | |
826840d9 | 923 | note_level_for_try () |
6625cdb5 | 924 | { |
826840d9 RH |
925 | current_binding_level->is_try_scope = 1; |
926 | } | |
927 | ||
928 | /* Record that the current binding level represents a catch block. */ | |
929 | ||
930 | void | |
931 | note_level_for_catch () | |
932 | { | |
933 | current_binding_level->is_catch_scope = 1; | |
6625cdb5 JM |
934 | } |
935 | ||
f181d4ae MM |
936 | /* For a binding between a name and an entity at a block scope, |
937 | this is the `struct binding_level' for the block. */ | |
938 | #define BINDING_LEVEL(NODE) \ | |
c7a932b1 | 939 | (((struct tree_binding*)NODE)->scope.level) |
f181d4ae | 940 | |
4890c2f4 MM |
941 | /* A free list of CPLUS_BINDING nodes, connected by their |
942 | TREE_CHAINs. */ | |
943 | ||
944 | static tree free_bindings; | |
945 | ||
f181d4ae MM |
946 | /* Make DECL the innermost binding for ID. The LEVEL is the binding |
947 | level at which this declaration is being bound. */ | |
948 | ||
949 | static void | |
950 | push_binding (id, decl, level) | |
951 | tree id; | |
952 | tree decl; | |
953 | struct binding_level* level; | |
954 | { | |
955 | tree binding; | |
956 | ||
4890c2f4 MM |
957 | if (free_bindings) |
958 | { | |
959 | binding = free_bindings; | |
960 | free_bindings = TREE_CHAIN (binding); | |
961 | } | |
962 | else | |
963 | binding = make_node (CPLUS_BINDING); | |
f181d4ae MM |
964 | |
965 | /* Now, fill in the binding information. */ | |
966 | BINDING_VALUE (binding) = decl; | |
d8f8dca1 | 967 | BINDING_TYPE (binding) = NULL_TREE; |
f181d4ae | 968 | BINDING_LEVEL (binding) = level; |
8f032717 | 969 | INHERITED_VALUE_BINDING_P (binding) = 0; |
f181d4ae | 970 | LOCAL_BINDING_P (binding) = (level != class_binding_level); |
87e3dbc9 | 971 | BINDING_HAS_LEVEL_P (binding) = 1; |
f181d4ae | 972 | |
c45df9c1 | 973 | /* And put it on the front of the list of bindings for ID. */ |
f181d4ae MM |
974 | TREE_CHAIN (binding) = IDENTIFIER_BINDING (id); |
975 | IDENTIFIER_BINDING (id) = binding; | |
976 | } | |
977 | ||
d8f8dca1 MM |
978 | /* ID is already bound in the current scope. But, DECL is an |
979 | additional binding for ID in the same scope. This is the `struct | |
980 | stat' hack whereby a non-typedef class-name or enum-name can be | |
981 | bound at the same level as some other kind of entity. It's the | |
982 | responsibility of the caller to check that inserting this name is | |
8f032717 MM |
983 | legal here. Returns nonzero if the new binding was successful. */ |
984 | static int | |
d8f8dca1 MM |
985 | add_binding (id, decl) |
986 | tree id; | |
987 | tree decl; | |
988 | { | |
989 | tree binding = IDENTIFIER_BINDING (id); | |
8f032717 | 990 | int ok = 1; |
d8f8dca1 MM |
991 | |
992 | if (TREE_CODE (decl) == TYPE_DECL && DECL_ARTIFICIAL (decl)) | |
993 | /* The new name is the type name. */ | |
994 | BINDING_TYPE (binding) = decl; | |
8f032717 MM |
995 | else if (!BINDING_VALUE (binding)) |
996 | /* This situation arises when push_class_level_binding moves an | |
997 | inherited type-binding out of the way to make room for a new | |
998 | value binding. */ | |
999 | BINDING_VALUE (binding) = decl; | |
1000 | else if (TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL | |
1001 | && DECL_ARTIFICIAL (BINDING_VALUE (binding))) | |
1002 | { | |
1003 | /* The old binding was a type name. It was placed in | |
1004 | BINDING_VALUE because it was thought, at the point it was | |
1005 | declared, to be the only entity with such a name. Move the | |
1006 | type name into the type slot; it is now hidden by the new | |
1007 | binding. */ | |
d8f8dca1 MM |
1008 | BINDING_TYPE (binding) = BINDING_VALUE (binding); |
1009 | BINDING_VALUE (binding) = decl; | |
8f032717 | 1010 | INHERITED_VALUE_BINDING_P (binding) = 0; |
d8f8dca1 | 1011 | } |
263505af MM |
1012 | else if (TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL |
1013 | && TREE_CODE (decl) == TYPE_DECL | |
1014 | && DECL_NAME (decl) == DECL_NAME (BINDING_VALUE (binding)) | |
1015 | && same_type_p (TREE_TYPE (decl), | |
1016 | TREE_TYPE (BINDING_VALUE (binding)))) | |
1017 | /* We have two typedef-names, both naming the same type to have | |
1018 | the same name. This is OK because of: | |
1019 | ||
1020 | [dcl.typedef] | |
1021 | ||
1022 | In a given scope, a typedef specifier can be used to redefine | |
1023 | the name of any type declared in that scope to refer to the | |
1024 | type to which it already refers. */ | |
1025 | ok = 0; | |
7b176381 MM |
1026 | /* There can be two block-scope declarations of the same variable, |
1027 | so long as they are `extern' declarations. */ | |
1028 | else if (TREE_CODE (decl) == VAR_DECL | |
1029 | && TREE_CODE (BINDING_VALUE (binding)) == VAR_DECL | |
1030 | && DECL_EXTERNAL (decl) | |
1031 | && DECL_EXTERNAL (BINDING_VALUE (binding))) | |
1032 | { | |
1033 | duplicate_decls (decl, BINDING_VALUE (binding)); | |
1034 | ok = 0; | |
1035 | } | |
8f032717 MM |
1036 | else |
1037 | { | |
1038 | cp_error ("declaration of `%#D'", decl); | |
1039 | cp_error_at ("conflicts with previous declaration `%#D'", | |
1040 | BINDING_VALUE (binding)); | |
1041 | ok = 0; | |
1042 | } | |
1043 | ||
1044 | return ok; | |
d8f8dca1 MM |
1045 | } |
1046 | ||
cfe507be MM |
1047 | /* Add DECL to the list of things declared in B. */ |
1048 | ||
1049 | static void | |
1050 | add_decl_to_level (decl, b) | |
1051 | tree decl; | |
1052 | struct binding_level *b; | |
1053 | { | |
cfe507be MM |
1054 | /* We build up the list in reverse order, and reverse it later if |
1055 | necessary. */ | |
1056 | TREE_CHAIN (decl) = b->names; | |
1057 | b->names = decl; | |
1058 | } | |
1059 | ||
1060 | /* Bind DECL to ID in the current_binding_level, assumed to be a local | |
1061 | binding level. If PUSH_USING is set in FLAGS, we know that DECL | |
1062 | doesn't really belong to this binding level, that it got here | |
1063 | through a using-declaration. */ | |
f181d4ae MM |
1064 | |
1065 | void | |
0034cf72 | 1066 | push_local_binding (id, decl, flags) |
f181d4ae MM |
1067 | tree id; |
1068 | tree decl; | |
0034cf72 | 1069 | int flags; |
f181d4ae | 1070 | { |
8f032717 MM |
1071 | struct binding_level *b; |
1072 | ||
1073 | /* Skip over any local classes. This makes sense if we call | |
1074 | push_local_binding with a friend decl of a local class. */ | |
1075 | b = current_binding_level; | |
1076 | while (b->parm_flag == 2) | |
1077 | b = b->level_chain; | |
f181d4ae | 1078 | |
d8f8dca1 | 1079 | if (lookup_name_current_level (id)) |
8f032717 MM |
1080 | { |
1081 | /* Supplement the existing binding. */ | |
1082 | if (!add_binding (id, decl)) | |
1083 | /* It didn't work. Something else must be bound at this | |
1084 | level. Do not add DECL to the list of things to pop | |
1085 | later. */ | |
1086 | return; | |
1087 | } | |
d8f8dca1 MM |
1088 | else |
1089 | /* Create a new binding. */ | |
8f032717 | 1090 | push_binding (id, decl, b); |
f181d4ae | 1091 | |
0034cf72 | 1092 | if (TREE_CODE (decl) == OVERLOAD || (flags & PUSH_USING)) |
a06d48ef JM |
1093 | /* We must put the OVERLOAD into a TREE_LIST since the |
1094 | TREE_CHAIN of an OVERLOAD is already used. Similarly for | |
1095 | decls that got here through a using-declaration. */ | |
1096 | decl = build_tree_list (NULL_TREE, decl); | |
1097 | ||
f181d4ae MM |
1098 | /* And put DECL on the list of things declared by the current |
1099 | binding level. */ | |
cfe507be | 1100 | add_decl_to_level (decl, b); |
f181d4ae MM |
1101 | } |
1102 | ||
8f032717 MM |
1103 | /* Bind DECL to ID in the class_binding_level. Returns nonzero if the |
1104 | binding was successful. */ | |
f181d4ae | 1105 | |
8f032717 | 1106 | int |
f181d4ae MM |
1107 | push_class_binding (id, decl) |
1108 | tree id; | |
1109 | tree decl; | |
1110 | { | |
8f032717 MM |
1111 | int result = 1; |
1112 | tree binding = IDENTIFIER_BINDING (id); | |
1113 | tree context; | |
1114 | ||
1115 | /* Note that we declared this value so that we can issue an error if | |
1116 | this an illegal redeclaration of a name already used for some | |
1117 | other purpose. */ | |
1118 | note_name_declared_in_class (id, decl); | |
1119 | ||
1120 | if (binding && BINDING_LEVEL (binding) == class_binding_level) | |
d8f8dca1 | 1121 | /* Supplement the existing binding. */ |
8f032717 | 1122 | result = add_binding (id, decl); |
d8f8dca1 MM |
1123 | else |
1124 | /* Create a new binding. */ | |
1125 | push_binding (id, decl, class_binding_level); | |
1126 | ||
1127 | /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the | |
1128 | class-level declaration. Note that we do not use DECL here | |
1129 | because of the possibility of the `struct stat' hack; if DECL is | |
1130 | a class-name or enum-name we might prefer a field-name, or some | |
1131 | such. */ | |
1132 | IDENTIFIER_CLASS_VALUE (id) = BINDING_VALUE (IDENTIFIER_BINDING (id)); | |
8f032717 MM |
1133 | |
1134 | /* If this is a binding from a base class, mark it as such. */ | |
1135 | binding = IDENTIFIER_BINDING (id); | |
1136 | if (BINDING_VALUE (binding) == decl && TREE_CODE (decl) != TREE_LIST) | |
1137 | { | |
280f9385 MM |
1138 | /* Any implicit typename must be from a base-class. The |
1139 | context for an implicit typename declaration is always | |
1140 | the derived class in which the lookup was done, so the checks | |
1141 | based on the context of DECL below will not trigger. */ | |
83233dca | 1142 | if (IMPLICIT_TYPENAME_TYPE_DECL_P (decl)) |
280f9385 | 1143 | INHERITED_VALUE_BINDING_P (binding) = 1; |
8f032717 MM |
1144 | else |
1145 | { | |
280f9385 | 1146 | if (TREE_CODE (decl) == OVERLOAD) |
4f1c5b7d | 1147 | context = CP_DECL_CONTEXT (OVL_CURRENT (decl)); |
280f9385 MM |
1148 | else |
1149 | { | |
2f939d94 | 1150 | my_friendly_assert (DECL_P (decl), 0); |
55de1b66 | 1151 | context = context_for_name_lookup (decl); |
280f9385 | 1152 | } |
8f032717 | 1153 | |
280f9385 MM |
1154 | if (is_properly_derived_from (current_class_type, context)) |
1155 | INHERITED_VALUE_BINDING_P (binding) = 1; | |
1156 | else | |
1157 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
1158 | } | |
8f032717 MM |
1159 | } |
1160 | else if (BINDING_VALUE (binding) == decl) | |
1161 | /* We only encounter a TREE_LIST when push_class_decls detects an | |
1162 | ambiguity. Such an ambiguity can be overridden by a definition | |
1163 | in this class. */ | |
1164 | INHERITED_VALUE_BINDING_P (binding) = 1; | |
1165 | ||
1166 | return result; | |
f181d4ae MM |
1167 | } |
1168 | ||
d8f8dca1 MM |
1169 | /* Remove the binding for DECL which should be the innermost binding |
1170 | for ID. */ | |
f181d4ae | 1171 | |
68642fb6 UD |
1172 | static void |
1173 | pop_binding (id, decl) | |
f181d4ae | 1174 | tree id; |
d8f8dca1 | 1175 | tree decl; |
f181d4ae MM |
1176 | { |
1177 | tree binding; | |
68642fb6 | 1178 | |
f181d4ae MM |
1179 | if (id == NULL_TREE) |
1180 | /* It's easiest to write the loops that call this function without | |
1181 | checking whether or not the entities involved have names. We | |
1182 | get here for such an entity. */ | |
1183 | return; | |
1184 | ||
d8f8dca1 | 1185 | /* Get the innermost binding for ID. */ |
f181d4ae | 1186 | binding = IDENTIFIER_BINDING (id); |
f181d4ae | 1187 | |
d8f8dca1 MM |
1188 | /* The name should be bound. */ |
1189 | my_friendly_assert (binding != NULL_TREE, 0); | |
1190 | ||
1191 | /* The DECL will be either the ordinary binding or the type | |
1192 | binding for this identifier. Remove that binding. */ | |
1193 | if (BINDING_VALUE (binding) == decl) | |
1194 | BINDING_VALUE (binding) = NULL_TREE; | |
1195 | else if (BINDING_TYPE (binding) == decl) | |
1196 | BINDING_TYPE (binding) = NULL_TREE; | |
1197 | else | |
1198 | my_friendly_abort (0); | |
1199 | ||
1200 | if (!BINDING_VALUE (binding) && !BINDING_TYPE (binding)) | |
4890c2f4 MM |
1201 | { |
1202 | /* We're completely done with the innermost binding for this | |
1203 | identifier. Unhook it from the list of bindings. */ | |
1204 | IDENTIFIER_BINDING (id) = TREE_CHAIN (binding); | |
1205 | ||
1206 | /* Add it to the free list. */ | |
1207 | TREE_CHAIN (binding) = free_bindings; | |
1208 | free_bindings = binding; | |
1209 | ||
1210 | /* Clear the BINDING_LEVEL so the garbage collector doesn't walk | |
1211 | it. */ | |
1212 | BINDING_LEVEL (binding) = NULL; | |
1213 | } | |
f181d4ae MM |
1214 | } |
1215 | ||
acef433b MM |
1216 | /* When a label goes out of scope, check to see if that label was used |
1217 | in a valid manner, and issue any appropriate warnings or errors. */ | |
1218 | ||
1219 | static void | |
6625cdb5 JM |
1220 | pop_label (label, old_value) |
1221 | tree label; | |
1222 | tree old_value; | |
acef433b | 1223 | { |
88848bde | 1224 | if (!processing_template_decl && doing_semantic_analysis_p ()) |
acef433b | 1225 | { |
88848bde MM |
1226 | if (DECL_INITIAL (label) == NULL_TREE) |
1227 | { | |
1228 | cp_error_at ("label `%D' used but not defined", label); | |
1229 | /* Avoid crashing later. */ | |
1230 | define_label (input_filename, 1, DECL_NAME (label)); | |
1231 | } | |
078721e1 | 1232 | else if (warn_unused_label && !TREE_USED (label)) |
88848bde | 1233 | cp_warning_at ("label `%D' defined but not used", label); |
acef433b | 1234 | } |
acef433b | 1235 | |
6625cdb5 | 1236 | SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value); |
acef433b MM |
1237 | } |
1238 | ||
0811ea8f | 1239 | /* At the end of a function, all labels declared within the function |
68642fb6 | 1240 | go out of scope. BLOCK is the top-level block for the |
acef433b MM |
1241 | function. */ |
1242 | ||
1243 | static void | |
1244 | pop_labels (block) | |
1245 | tree block; | |
1246 | { | |
6625cdb5 | 1247 | struct named_label_list *link; |
acef433b MM |
1248 | |
1249 | /* Clear out the definitions of all label names, since their scopes | |
1250 | end here. */ | |
6625cdb5 | 1251 | for (link = named_labels; link; link = link->next) |
acef433b | 1252 | { |
6625cdb5 | 1253 | pop_label (link->label_decl, link->old_value); |
acef433b MM |
1254 | /* Put the labels into the "variables" of the top-level block, |
1255 | so debugger can see them. */ | |
6625cdb5 JM |
1256 | TREE_CHAIN (link->label_decl) = BLOCK_VARS (block); |
1257 | BLOCK_VARS (block) = link->label_decl; | |
acef433b MM |
1258 | } |
1259 | ||
6625cdb5 | 1260 | named_labels = NULL; |
acef433b MM |
1261 | } |
1262 | ||
8d08fdba MS |
1263 | /* Exit a binding level. |
1264 | Pop the level off, and restore the state of the identifier-decl mappings | |
1265 | that were in effect when this level was entered. | |
1266 | ||
1267 | If KEEP == 1, this level had explicit declarations, so | |
1268 | and create a "block" (a BLOCK node) for the level | |
1269 | to record its declarations and subblocks for symbol table output. | |
1270 | ||
8d08fdba MS |
1271 | If FUNCTIONBODY is nonzero, this level is the body of a function, |
1272 | so create a block as if KEEP were set and also clear out all | |
1273 | label names. | |
1274 | ||
1275 | If REVERSE is nonzero, reverse the order of decls before putting | |
1276 | them into the BLOCK. */ | |
1277 | ||
1278 | tree | |
1279 | poplevel (keep, reverse, functionbody) | |
1280 | int keep; | |
1281 | int reverse; | |
1282 | int functionbody; | |
1283 | { | |
1284 | register tree link; | |
1285 | /* The chain of decls was accumulated in reverse order. | |
1286 | Put it into forward order, just for cleanliness. */ | |
1287 | tree decls; | |
1288 | int tmp = functionbody; | |
b35d4555 MM |
1289 | int real_functionbody; |
1290 | tree tags; | |
1291 | tree subblocks; | |
8d08fdba MS |
1292 | tree block = NULL_TREE; |
1293 | tree decl; | |
f181d4ae MM |
1294 | int leaving_for_scope; |
1295 | ||
01d939e8 | 1296 | if (cfun && !doing_semantic_analysis_p ()) |
b35d4555 MM |
1297 | return NULL_TREE; |
1298 | ||
273a708f MM |
1299 | my_friendly_assert (current_binding_level->parm_flag != 2, |
1300 | 19990916); | |
b74a0560 | 1301 | |
b35d4555 MM |
1302 | real_functionbody = (current_binding_level->keep == 2 |
1303 | ? ((functionbody = 0), tmp) : functionbody); | |
1304 | tags = functionbody >= 0 ? current_binding_level->tags : 0; | |
1305 | subblocks = functionbody >= 0 ? current_binding_level->blocks : 0; | |
1306 | ||
b74a0560 MM |
1307 | my_friendly_assert (!current_binding_level->class_shadowed, |
1308 | 19990414); | |
8d08fdba | 1309 | |
536333d4 MM |
1310 | /* We used to use KEEP == 2 to indicate that the new block should go |
1311 | at the beginning of the list of blocks at this binding level, | |
1312 | rather than the end. This hack is no longer used. */ | |
1313 | my_friendly_assert (keep == 0 || keep == 1, 0); | |
1314 | ||
8d08fdba MS |
1315 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, |
1316 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
1317 | current_binding_level->parm_flag, | |
5566b478 | 1318 | current_binding_level->keep); |
8d08fdba MS |
1319 | |
1320 | if (current_binding_level->keep == 1) | |
1321 | keep = 1; | |
1322 | ||
6625cdb5 JM |
1323 | /* Any uses of undefined labels, and any defined labels, now operate |
1324 | under constraints of next binding contour. */ | |
1325 | if (cfun && !functionbody) | |
1326 | { | |
1327 | struct binding_level *level_chain; | |
1328 | level_chain = current_binding_level->level_chain; | |
1329 | if (level_chain) | |
1330 | { | |
1331 | struct named_label_use_list *uses; | |
1332 | struct named_label_list *labels; | |
1333 | for (labels = named_labels; labels; labels = labels->next) | |
1334 | if (labels->binding_level == current_binding_level) | |
1335 | { | |
1336 | tree decl; | |
826840d9 RH |
1337 | if (current_binding_level->is_try_scope) |
1338 | labels->in_try_scope = 1; | |
1339 | if (current_binding_level->is_catch_scope) | |
1340 | labels->in_catch_scope = 1; | |
6625cdb5 JM |
1341 | for (decl = labels->names_in_scope; decl; |
1342 | decl = TREE_CHAIN (decl)) | |
1343 | if (decl_jump_unsafe (decl)) | |
1344 | labels->bad_decls = tree_cons (NULL_TREE, decl, | |
1345 | labels->bad_decls); | |
1346 | labels->binding_level = level_chain; | |
1347 | labels->names_in_scope = level_chain->names; | |
1348 | } | |
1349 | ||
1350 | for (uses = named_label_uses; uses; uses = uses->next) | |
1351 | if (uses->binding_level == current_binding_level) | |
1352 | { | |
1353 | uses->binding_level = level_chain; | |
1354 | uses->names_in_scope = level_chain->names; | |
1355 | } | |
1356 | } | |
1357 | } | |
1358 | ||
8d08fdba MS |
1359 | /* Get the decls in the order they were written. |
1360 | Usually current_binding_level->names is in reverse order. | |
1361 | But parameter decls were previously put in forward order. */ | |
1362 | ||
1363 | if (reverse) | |
1364 | current_binding_level->names | |
1365 | = decls = nreverse (current_binding_level->names); | |
1366 | else | |
1367 | decls = current_binding_level->names; | |
1368 | ||
1369 | /* Output any nested inline functions within this block | |
1370 | if they weren't already output. */ | |
8d08fdba MS |
1371 | for (decl = decls; decl; decl = TREE_CHAIN (decl)) |
1372 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1373 | && ! TREE_ASM_WRITTEN (decl) | |
1374 | && DECL_INITIAL (decl) != NULL_TREE | |
6060a796 MS |
1375 | && TREE_ADDRESSABLE (decl) |
1376 | && decl_function_context (decl) == current_function_decl) | |
8d08fdba MS |
1377 | { |
1378 | /* If this decl was copied from a file-scope decl | |
1379 | on account of a block-scope extern decl, | |
1380 | propagate TREE_ADDRESSABLE to the file-scope decl. */ | |
1381 | if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) | |
1382 | TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1; | |
1383 | else | |
1384 | { | |
1385 | push_function_context (); | |
1386 | output_inline_function (decl); | |
1387 | pop_function_context (); | |
1388 | } | |
1389 | } | |
1390 | ||
d9b2d9da MM |
1391 | /* When not in function-at-a-time mode, expand_end_bindings will |
1392 | warn about unused variables. But, in function-at-a-time mode | |
1393 | expand_end_bindings is not passed the list of variables in the | |
1394 | current scope, and therefore no warning is emitted. So, we | |
1395 | explicitly warn here. */ | |
1396 | if (!processing_template_decl) | |
1397 | warn_about_unused_variables (getdecls ()); | |
1398 | ||
8d08fdba MS |
1399 | /* If there were any declarations or structure tags in that level, |
1400 | or if this level is a function body, | |
1401 | create a BLOCK to record them for the life of this function. */ | |
8d08fdba | 1402 | block = NULL_TREE; |
f444e36b | 1403 | if (keep == 1 || functionbody) |
8d08fdba MS |
1404 | block = make_node (BLOCK); |
1405 | if (block != NULL_TREE) | |
1406 | { | |
f444e36b MM |
1407 | BLOCK_VARS (block) = decls; |
1408 | BLOCK_SUBBLOCKS (block) = subblocks; | |
8d08fdba MS |
1409 | } |
1410 | ||
1411 | /* In each subblock, record that this is its superior. */ | |
8d08fdba MS |
1412 | if (keep >= 0) |
1413 | for (link = subblocks; link; link = TREE_CHAIN (link)) | |
1414 | BLOCK_SUPERCONTEXT (link) = block; | |
1415 | ||
f181d4ae MM |
1416 | /* We still support the old for-scope rules, whereby the variables |
1417 | in a for-init statement were in scope after the for-statement | |
1418 | ended. We only use the new rules in flag_new_for_scope is | |
1419 | nonzero. */ | |
68642fb6 | 1420 | leaving_for_scope |
f181d4ae MM |
1421 | = current_binding_level->is_for_scope && flag_new_for_scope == 1; |
1422 | ||
1423 | /* Remove declarations for all the DECLs in this level. */ | |
1424 | for (link = decls; link; link = TREE_CHAIN (link)) | |
1425 | { | |
c3783399 NS |
1426 | if (leaving_for_scope && TREE_CODE (link) == VAR_DECL |
1427 | && DECL_NAME (link)) | |
f181d4ae | 1428 | { |
68642fb6 | 1429 | tree outer_binding |
f181d4ae MM |
1430 | = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (link))); |
1431 | tree ns_binding; | |
1432 | ||
1433 | if (!outer_binding) | |
1434 | ns_binding = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (link)); | |
c7dda1e3 MM |
1435 | else |
1436 | ns_binding = NULL_TREE; | |
1437 | ||
68642fb6 UD |
1438 | if (outer_binding |
1439 | && (BINDING_LEVEL (outer_binding) | |
f181d4ae MM |
1440 | == current_binding_level->level_chain)) |
1441 | /* We have something like: | |
68642fb6 | 1442 | |
f181d4ae MM |
1443 | int i; |
1444 | for (int i; ;); | |
68642fb6 | 1445 | |
f181d4ae MM |
1446 | and we are leaving the `for' scope. There's no reason to |
1447 | keep the binding of the inner `i' in this case. */ | |
d8f8dca1 | 1448 | pop_binding (DECL_NAME (link), link); |
68642fb6 UD |
1449 | else if ((outer_binding |
1450 | && (TREE_CODE (BINDING_VALUE (outer_binding)) | |
f181d4ae | 1451 | == TYPE_DECL)) |
68642fb6 | 1452 | || (ns_binding |
f181d4ae MM |
1453 | && TREE_CODE (ns_binding) == TYPE_DECL)) |
1454 | /* Here, we have something like: | |
1455 | ||
1456 | typedef int I; | |
1457 | ||
1458 | void f () { | |
1459 | for (int I; ;); | |
1460 | } | |
1461 | ||
1462 | We must pop the for-scope binding so we know what's a | |
1463 | type and what isn't. */ | |
d8f8dca1 | 1464 | pop_binding (DECL_NAME (link), link); |
e76a2646 | 1465 | else |
e76a2646 | 1466 | { |
f181d4ae MM |
1467 | /* Mark this VAR_DECL as dead so that we can tell we left it |
1468 | there only for backward compatibility. */ | |
1469 | DECL_DEAD_FOR_LOCAL (link) = 1; | |
68642fb6 | 1470 | |
f181d4ae MM |
1471 | /* Keep track of what should of have happenned when we |
1472 | popped the binding. */ | |
1473 | if (outer_binding && BINDING_VALUE (outer_binding)) | |
68642fb6 | 1474 | DECL_SHADOWED_FOR_VAR (link) |
f181d4ae MM |
1475 | = BINDING_VALUE (outer_binding); |
1476 | ||
1477 | /* Add it to the list of dead variables in the next | |
1478 | outermost binding to that we can remove these when we | |
1479 | leave that binding. */ | |
1480 | current_binding_level->level_chain->dead_vars_from_for | |
1481 | = tree_cons (NULL_TREE, link, | |
1482 | current_binding_level->level_chain-> | |
1483 | dead_vars_from_for); | |
1484 | ||
1485 | /* Although we don't pop the CPLUS_BINDING, we do clear | |
1486 | its BINDING_LEVEL since the level is going away now. */ | |
1487 | BINDING_LEVEL (IDENTIFIER_BINDING (DECL_NAME (link))) | |
1488 | = 0; | |
e76a2646 | 1489 | } |
2ee887f2 | 1490 | } |
68642fb6 | 1491 | else |
8d6e462b | 1492 | { |
f181d4ae | 1493 | /* Remove the binding. */ |
0034cf72 JM |
1494 | decl = link; |
1495 | if (TREE_CODE (decl) == TREE_LIST) | |
1496 | decl = TREE_VALUE (decl); | |
2f939d94 | 1497 | if (DECL_P (decl)) |
0034cf72 JM |
1498 | pop_binding (DECL_NAME (decl), decl); |
1499 | else if (TREE_CODE (decl) == OVERLOAD) | |
1500 | pop_binding (DECL_NAME (OVL_FUNCTION (decl)), decl); | |
68642fb6 | 1501 | else |
f181d4ae | 1502 | my_friendly_abort (0); |
8d08fdba | 1503 | } |
f181d4ae | 1504 | } |
8d08fdba | 1505 | |
f181d4ae MM |
1506 | /* Remove declarations for any `for' variables from inner scopes |
1507 | that we kept around. */ | |
1508 | for (link = current_binding_level->dead_vars_from_for; | |
1509 | link; link = TREE_CHAIN (link)) | |
d8f8dca1 | 1510 | pop_binding (DECL_NAME (TREE_VALUE (link)), TREE_VALUE (link)); |
2ee887f2 | 1511 | |
f181d4ae MM |
1512 | /* Restore the IDENTIFIER_TYPE_VALUEs. */ |
1513 | for (link = current_binding_level->type_shadowed; | |
1514 | link; link = TREE_CHAIN (link)) | |
1515 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link)); | |
acef433b MM |
1516 | |
1517 | /* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */ | |
1518 | for (link = current_binding_level->shadowed_labels; | |
68642fb6 | 1519 | link; |
acef433b | 1520 | link = TREE_CHAIN (link)) |
6625cdb5 | 1521 | pop_label (TREE_VALUE (link), TREE_PURPOSE (link)); |
acef433b | 1522 | |
f181d4ae MM |
1523 | /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs |
1524 | list if a `using' declaration put them there. The debugging | |
1525 | back-ends won't understand OVERLOAD, so we remove them here. | |
1526 | Because the BLOCK_VARS are (temporarily) shared with | |
1527 | CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have | |
1528 | popped all the bindings. */ | |
1529 | if (block) | |
1530 | { | |
1531 | tree* d; | |
8d6e462b | 1532 | |
a06d48ef JM |
1533 | for (d = &BLOCK_VARS (block); *d; ) |
1534 | { | |
1535 | if (TREE_CODE (*d) == TREE_LIST) | |
1536 | *d = TREE_CHAIN (*d); | |
1537 | else | |
1538 | d = &TREE_CHAIN (*d); | |
1539 | } | |
8d6e462b | 1540 | } |
8d08fdba MS |
1541 | |
1542 | /* If the level being exited is the top level of a function, | |
1543 | check over all the labels. */ | |
8d08fdba MS |
1544 | if (functionbody) |
1545 | { | |
acef433b MM |
1546 | /* Since this is the top level block of a function, the vars are |
1547 | the function's parameters. Don't leave them in the BLOCK | |
1548 | because they are found in the FUNCTION_DECL instead. */ | |
8d08fdba | 1549 | BLOCK_VARS (block) = 0; |
acef433b | 1550 | pop_labels (block); |
8d08fdba MS |
1551 | } |
1552 | ||
8d08fdba MS |
1553 | tmp = current_binding_level->keep; |
1554 | ||
1555 | pop_binding_level (); | |
1556 | if (functionbody) | |
1557 | DECL_INITIAL (current_function_decl) = block; | |
1558 | else if (block) | |
f444e36b MM |
1559 | current_binding_level->blocks |
1560 | = chainon (current_binding_level->blocks, block); | |
1561 | ||
8d08fdba MS |
1562 | /* If we did not make a block for the level just exited, |
1563 | any blocks made for inner levels | |
1564 | (since they cannot be recorded as subblocks in that level) | |
1565 | must be carried forward so they will later become subblocks | |
1566 | of something else. */ | |
1567 | else if (subblocks) | |
536333d4 MM |
1568 | current_binding_level->blocks |
1569 | = chainon (current_binding_level->blocks, subblocks); | |
8d08fdba | 1570 | |
d9b2d9da MM |
1571 | /* Each and every BLOCK node created here in `poplevel' is important |
1572 | (e.g. for proper debugging information) so if we created one | |
1573 | earlier, mark it as "used". */ | |
1574 | if (block) | |
1575 | TREE_USED (block) = 1; | |
1576 | ||
8d08fdba | 1577 | /* Take care of compiler's internal binding structures. */ |
a4443a08 | 1578 | if (tmp == 2) |
8d08fdba | 1579 | { |
d9b2d9da MM |
1580 | tree scope_stmts; |
1581 | ||
68642fb6 | 1582 | scope_stmts |
d9b2d9da | 1583 | = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/1); |
8d08fdba | 1584 | if (block) |
d9b2d9da MM |
1585 | { |
1586 | SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmts)) = block; | |
1587 | SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmts)) = block; | |
1588 | } | |
1589 | ||
8f471b0d | 1590 | block = poplevel (keep, reverse, functionbody); |
8d08fdba MS |
1591 | } |
1592 | ||
8d08fdba MS |
1593 | return block; |
1594 | } | |
1595 | ||
1596 | /* Delete the node BLOCK from the current binding level. | |
1597 | This is used for the block inside a stmt expr ({...}) | |
1598 | so that the block can be reinserted where appropriate. */ | |
1599 | ||
1600 | void | |
1601 | delete_block (block) | |
1602 | tree block; | |
1603 | { | |
1604 | tree t; | |
1605 | if (current_binding_level->blocks == block) | |
1606 | current_binding_level->blocks = TREE_CHAIN (block); | |
1607 | for (t = current_binding_level->blocks; t;) | |
1608 | { | |
1609 | if (TREE_CHAIN (t) == block) | |
1610 | TREE_CHAIN (t) = TREE_CHAIN (block); | |
1611 | else | |
1612 | t = TREE_CHAIN (t); | |
1613 | } | |
1614 | TREE_CHAIN (block) = NULL_TREE; | |
1615 | /* Clear TREE_USED which is always set by poplevel. | |
1616 | The flag is set again if insert_block is called. */ | |
1617 | TREE_USED (block) = 0; | |
1618 | } | |
1619 | ||
1620 | /* Insert BLOCK at the end of the list of subblocks of the | |
1621 | current binding level. This is used when a BIND_EXPR is expanded, | |
1622 | to handle the BLOCK node inside the BIND_EXPR. */ | |
1623 | ||
1624 | void | |
1625 | insert_block (block) | |
1626 | tree block; | |
1627 | { | |
1628 | TREE_USED (block) = 1; | |
1629 | current_binding_level->blocks | |
1630 | = chainon (current_binding_level->blocks, block); | |
1631 | } | |
1632 | ||
8d08fdba MS |
1633 | /* Set the BLOCK node for the innermost scope |
1634 | (the one we are currently in). */ | |
1635 | ||
1636 | void | |
1637 | set_block (block) | |
f444e36b | 1638 | tree block ATTRIBUTE_UNUSED; |
8d08fdba | 1639 | { |
f444e36b MM |
1640 | /* The RTL expansion machinery requires us to provide this callback, |
1641 | but it is not applicable in function-at-a-time mode. */ | |
1642 | my_friendly_assert (cfun && !doing_semantic_analysis_p (), 20000911); | |
8d08fdba MS |
1643 | } |
1644 | ||
1645 | /* Do a pushlevel for class declarations. */ | |
e92cc029 | 1646 | |
8d08fdba MS |
1647 | void |
1648 | pushlevel_class () | |
1649 | { | |
1650 | register struct binding_level *newlevel; | |
1651 | ||
1652 | /* Reuse or create a struct for this binding level. */ | |
1653 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1654 | if (0) | |
1655 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1656 | if (free_binding_level) | |
1657 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1658 | { | |
1659 | newlevel = free_binding_level; | |
1660 | free_binding_level = free_binding_level->level_chain; | |
1661 | } | |
1662 | else | |
f181d4ae | 1663 | newlevel = make_binding_level (); |
8d08fdba MS |
1664 | |
1665 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1666 | is_class_level = 1; | |
1667 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1668 | ||
1669 | push_binding_level (newlevel, 0, 0); | |
1670 | ||
8d08fdba MS |
1671 | class_binding_level = current_binding_level; |
1672 | class_binding_level->parm_flag = 2; | |
70adf8a9 | 1673 | class_binding_level->this_class = current_class_type; |
8d08fdba MS |
1674 | } |
1675 | ||
b74a0560 | 1676 | /* ...and a poplevel for class declarations. */ |
e92cc029 | 1677 | |
273a708f | 1678 | void |
b74a0560 | 1679 | poplevel_class () |
8d08fdba MS |
1680 | { |
1681 | register struct binding_level *level = class_binding_level; | |
8d08fdba MS |
1682 | tree shadowed; |
1683 | ||
1684 | my_friendly_assert (level != 0, 354); | |
68642fb6 | 1685 | |
8d08fdba | 1686 | /* If we're leaving a toplevel class, don't bother to do the setting |
ddd5a7c1 | 1687 | of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot |
8d08fdba | 1688 | shouldn't even be used when current_class_type isn't set, and second, |
ddd5a7c1 | 1689 | if we don't touch it here, we're able to use the cache effect if the |
8d08fdba | 1690 | next time we're entering a class scope, it is the same class. */ |
b74a0560 | 1691 | if (current_class_depth != 1) |
8f032717 MM |
1692 | { |
1693 | struct binding_level* b; | |
1694 | ||
1695 | /* Clear out our IDENTIFIER_CLASS_VALUEs. */ | |
1696 | for (shadowed = level->class_shadowed; | |
1697 | shadowed; | |
1698 | shadowed = TREE_CHAIN (shadowed)) | |
1699 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = NULL_TREE; | |
68642fb6 | 1700 | |
8f032717 MM |
1701 | /* Find the next enclosing class, and recreate |
1702 | IDENTIFIER_CLASS_VALUEs appropriate for that class. */ | |
1703 | b = level->level_chain; | |
1704 | while (b && b->parm_flag != 2) | |
1705 | b = b->level_chain; | |
1706 | ||
1707 | if (b) | |
68642fb6 UD |
1708 | for (shadowed = b->class_shadowed; |
1709 | shadowed; | |
8f032717 MM |
1710 | shadowed = TREE_CHAIN (shadowed)) |
1711 | { | |
1712 | tree t; | |
1713 | ||
1714 | t = IDENTIFIER_BINDING (TREE_PURPOSE (shadowed)); | |
1715 | while (t && BINDING_LEVEL (t) != b) | |
1716 | t = TREE_CHAIN (t); | |
68642fb6 | 1717 | |
8f032717 | 1718 | if (t) |
68642fb6 | 1719 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) |
8f032717 MM |
1720 | = BINDING_VALUE (t); |
1721 | } | |
1722 | } | |
8d08fdba MS |
1723 | else |
1724 | /* Remember to save what IDENTIFIER's were bound in this scope so we | |
1725 | can recover from cache misses. */ | |
e76a2646 MS |
1726 | { |
1727 | previous_class_type = current_class_type; | |
1728 | previous_class_values = class_binding_level->class_shadowed; | |
1729 | } | |
8d08fdba MS |
1730 | for (shadowed = level->type_shadowed; |
1731 | shadowed; | |
1732 | shadowed = TREE_CHAIN (shadowed)) | |
2c73f9f5 | 1733 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed), TREE_VALUE (shadowed)); |
8d08fdba | 1734 | |
f181d4ae | 1735 | /* Remove the bindings for all of the class-level declarations. */ |
68642fb6 UD |
1736 | for (shadowed = level->class_shadowed; |
1737 | shadowed; | |
f181d4ae | 1738 | shadowed = TREE_CHAIN (shadowed)) |
d8f8dca1 | 1739 | pop_binding (TREE_PURPOSE (shadowed), TREE_TYPE (shadowed)); |
f181d4ae | 1740 | |
8d08fdba MS |
1741 | GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level, |
1742 | (HOST_WIDE_INT) class_binding_level->level_chain, | |
1743 | class_binding_level->parm_flag, | |
5566b478 | 1744 | class_binding_level->keep); |
8d08fdba | 1745 | |
38e01259 | 1746 | /* Now, pop out of the binding level which we created up in the |
8d08fdba MS |
1747 | `pushlevel_class' routine. */ |
1748 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1749 | is_class_level = 1; | |
1750 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1751 | ||
1752 | pop_binding_level (); | |
8d08fdba | 1753 | } |
8f032717 MM |
1754 | |
1755 | /* We are entering the scope of a class. Clear IDENTIFIER_CLASS_VALUE | |
1756 | for any names in enclosing classes. */ | |
1757 | ||
1758 | void | |
1759 | clear_identifier_class_values () | |
1760 | { | |
1761 | tree t; | |
1762 | ||
1763 | if (!class_binding_level) | |
1764 | return; | |
1765 | ||
1766 | for (t = class_binding_level->class_shadowed; | |
1767 | t; | |
1768 | t = TREE_CHAIN (t)) | |
1769 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (t)) = NULL_TREE; | |
1770 | } | |
1771 | ||
0aafb128 MM |
1772 | /* Returns non-zero if T is a virtual function table. */ |
1773 | ||
1774 | int | |
1775 | vtable_decl_p (t, data) | |
1776 | tree t; | |
1777 | void *data ATTRIBUTE_UNUSED; | |
1778 | { | |
1779 | return (TREE_CODE (t) == VAR_DECL && DECL_VIRTUAL_P (t)); | |
1780 | } | |
1781 | ||
1782 | /* Returns non-zero if T is a TYPE_DECL for a type with virtual | |
1783 | functions. */ | |
1784 | ||
1785 | int | |
1786 | vtype_decl_p (t, data) | |
1787 | tree t; | |
1788 | void *data ATTRIBUTE_UNUSED; | |
1789 | { | |
1790 | return (TREE_CODE (t) == TYPE_DECL | |
34249844 NS |
1791 | && TREE_CODE (TREE_TYPE (t)) == RECORD_TYPE |
1792 | && TYPE_POLYMORPHIC_P (TREE_TYPE (t))); | |
0aafb128 MM |
1793 | } |
1794 | ||
f71f87f9 MM |
1795 | /* Return the declarations that are members of the namespace NS. */ |
1796 | ||
1797 | tree | |
1798 | cp_namespace_decls (ns) | |
1799 | tree ns; | |
1800 | { | |
1801 | return NAMESPACE_LEVEL (ns)->names; | |
1802 | } | |
1803 | ||
0aafb128 MM |
1804 | /* Walk all the namespaces contained NAMESPACE, including NAMESPACE |
1805 | itself, calling F for each. The DATA is passed to F as well. */ | |
1806 | ||
1807 | static int | |
1808 | walk_namespaces_r (namespace, f, data) | |
1809 | tree namespace; | |
1810 | walk_namespaces_fn f; | |
1811 | void *data; | |
1812 | { | |
1813 | tree current; | |
1814 | int result = 0; | |
1815 | ||
1816 | result |= (*f) (namespace, data); | |
1817 | ||
f71f87f9 | 1818 | for (current = cp_namespace_decls (namespace); |
0aafb128 MM |
1819 | current; |
1820 | current = TREE_CHAIN (current)) | |
1821 | { | |
1822 | if (TREE_CODE (current) != NAMESPACE_DECL | |
1823 | || DECL_NAMESPACE_ALIAS (current)) | |
1824 | continue; | |
1825 | if (!DECL_LANG_SPECIFIC (current)) | |
1826 | { | |
1827 | /* Hmm. std. */ | |
6bcedb4e | 1828 | my_friendly_assert (current == fake_std_node, 393); |
0aafb128 MM |
1829 | continue; |
1830 | } | |
1831 | ||
1832 | /* We found a namespace. */ | |
1833 | result |= walk_namespaces_r (current, f, data); | |
1834 | } | |
1835 | ||
1836 | return result; | |
1837 | } | |
1838 | ||
1839 | /* Walk all the namespaces, calling F for each. The DATA is passed to | |
1840 | F as well. */ | |
1841 | ||
1842 | int | |
1843 | walk_namespaces (f, data) | |
1844 | walk_namespaces_fn f; | |
1845 | void *data; | |
1846 | { | |
1847 | return walk_namespaces_r (global_namespace, f, data); | |
1848 | } | |
1849 | ||
1850 | struct walk_globals_data { | |
1851 | walk_globals_pred p; | |
1852 | walk_globals_fn f; | |
1853 | void *data; | |
1854 | }; | |
1855 | ||
1856 | /* Walk the global declarations in NAMESPACE. Whenever one is found | |
1857 | for which P returns non-zero, call F with its address. If any call | |
1858 | to F returns a non-zero value, return a non-zero value. */ | |
1859 | ||
68642fb6 | 1860 | static int |
0aafb128 MM |
1861 | walk_globals_r (namespace, data) |
1862 | tree namespace; | |
1863 | void *data; | |
1864 | { | |
1865 | struct walk_globals_data* wgd = (struct walk_globals_data *) data; | |
1866 | walk_globals_pred p = wgd->p; | |
1867 | walk_globals_fn f = wgd->f; | |
1868 | void *d = wgd->data; | |
1869 | tree *t; | |
1870 | int result = 0; | |
1871 | ||
1872 | t = &NAMESPACE_LEVEL (namespace)->names; | |
1873 | ||
1874 | while (*t) | |
1875 | { | |
1876 | tree glbl = *t; | |
1877 | ||
1878 | if ((*p) (glbl, d)) | |
1879 | result |= (*f) (t, d); | |
1880 | ||
1881 | /* If F changed *T, then *T still points at the next item to | |
1882 | examine. */ | |
1883 | if (*t == glbl) | |
1884 | t = &TREE_CHAIN (*t); | |
1885 | } | |
1886 | ||
1887 | return result; | |
1888 | } | |
1889 | ||
1890 | /* Walk the global declarations. Whenever one is found for which P | |
1891 | returns non-zero, call F with its address. If any call to F | |
1892 | returns a non-zero value, return a non-zero value. */ | |
1893 | ||
1894 | int | |
1895 | walk_globals (p, f, data) | |
1896 | walk_globals_pred p; | |
1897 | walk_globals_fn f; | |
1898 | void *data; | |
1899 | { | |
1900 | struct walk_globals_data wgd; | |
1901 | wgd.p = p; | |
1902 | wgd.f = f; | |
1903 | wgd.data = data; | |
1904 | ||
1905 | return walk_namespaces (walk_globals_r, &wgd); | |
1906 | } | |
1907 | ||
1908 | /* Call wrapup_globals_declarations for the globals in NAMESPACE. If | |
1909 | DATA is non-NULL, this is the last time we will call | |
1910 | wrapup_global_declarations for this NAMESPACE. */ | |
1911 | ||
1912 | int | |
1913 | wrapup_globals_for_namespace (namespace, data) | |
1914 | tree namespace; | |
1915 | void *data; | |
1916 | { | |
f71f87f9 | 1917 | tree globals = cp_namespace_decls (namespace); |
0aafb128 MM |
1918 | int len = list_length (globals); |
1919 | tree *vec = (tree *) alloca (sizeof (tree) * len); | |
1920 | int i; | |
0352cfc8 | 1921 | int result; |
0aafb128 MM |
1922 | tree decl; |
1923 | int last_time = (data != 0); | |
1924 | ||
1925 | if (last_time && namespace == global_namespace) | |
1926 | /* Let compile_file handle the global namespace. */ | |
1927 | return 0; | |
1928 | ||
1929 | /* Process the decls in reverse order--earliest first. | |
1930 | Put them into VEC from back to front, then take out from front. */ | |
0aafb128 | 1931 | for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl)) |
62136084 | 1932 | vec[len - i - 1] = decl; |
68642fb6 | 1933 | |
0352cfc8 MM |
1934 | if (last_time) |
1935 | { | |
1936 | check_global_declarations (vec, len); | |
1937 | return 0; | |
1938 | } | |
1939 | ||
1940 | /* Temporarily mark vtables as external. That prevents | |
1941 | wrapup_global_declarations from writing them out; we must process | |
1942 | them ourselves in finish_vtable_vardecl. */ | |
1943 | for (i = 0; i < len; ++i) | |
91f2aa22 | 1944 | if (vtable_decl_p (vec[i], /*data=*/0) && !DECL_EXTERNAL (vec[i])) |
0352cfc8 MM |
1945 | { |
1946 | DECL_NOT_REALLY_EXTERN (vec[i]) = 1; | |
1947 | DECL_EXTERNAL (vec[i]) = 1; | |
1948 | } | |
0aafb128 | 1949 | |
0352cfc8 MM |
1950 | /* Write out any globals that need to be output. */ |
1951 | result = wrapup_global_declarations (vec, len); | |
1952 | ||
1953 | /* Undo the hack to DECL_EXTERNAL above. */ | |
1954 | for (i = 0; i < len; ++i) | |
1955 | if (vtable_decl_p (vec[i], /*data=*/0) | |
1956 | && DECL_NOT_REALLY_EXTERN (vec[i])) | |
1957 | { | |
1958 | DECL_NOT_REALLY_EXTERN (vec[i]) = 0; | |
1959 | DECL_EXTERNAL (vec[i]) = 0; | |
1960 | } | |
1961 | ||
1962 | return result; | |
0aafb128 MM |
1963 | } |
1964 | ||
4519c0a8 | 1965 | \f |
fc6af6e3 RH |
1966 | /* Mark ARG (which is really a struct binding_level **) for GC. */ |
1967 | ||
4519c0a8 MM |
1968 | static void |
1969 | mark_binding_level (arg) | |
1970 | void *arg; | |
1971 | { | |
1972 | struct binding_level *lvl = *(struct binding_level **)arg; | |
1973 | ||
6625cdb5 | 1974 | for (; lvl; lvl = lvl->level_chain) |
4519c0a8 MM |
1975 | { |
1976 | ggc_mark_tree (lvl->names); | |
1977 | ggc_mark_tree (lvl->tags); | |
1978 | ggc_mark_tree (lvl->usings); | |
1979 | ggc_mark_tree (lvl->using_directives); | |
1980 | ggc_mark_tree (lvl->class_shadowed); | |
1981 | ggc_mark_tree (lvl->type_shadowed); | |
1982 | ggc_mark_tree (lvl->shadowed_labels); | |
1983 | ggc_mark_tree (lvl->blocks); | |
70adf8a9 | 1984 | ggc_mark_tree (lvl->this_class); |
4519c0a8 MM |
1985 | ggc_mark_tree (lvl->incomplete); |
1986 | ggc_mark_tree (lvl->dead_vars_from_for); | |
6625cdb5 JM |
1987 | } |
1988 | } | |
1989 | ||
1990 | static void | |
1991 | mark_named_label_lists (labs, uses) | |
1992 | void *labs; | |
1993 | void *uses; | |
1994 | { | |
1995 | struct named_label_list *l = *(struct named_label_list **)labs; | |
1996 | struct named_label_use_list *u = *(struct named_label_use_list **)uses; | |
4519c0a8 | 1997 | |
6625cdb5 JM |
1998 | for (; l; l = l->next) |
1999 | { | |
2000 | ggc_mark (l); | |
2001 | mark_binding_level (l->binding_level); | |
2002 | ggc_mark_tree (l->old_value); | |
2003 | ggc_mark_tree (l->label_decl); | |
2004 | ggc_mark_tree (l->bad_decls); | |
4519c0a8 | 2005 | } |
6625cdb5 JM |
2006 | |
2007 | for (; u; u = u->next) | |
2008 | ggc_mark (u); | |
4519c0a8 | 2009 | } |
8d08fdba MS |
2010 | \f |
2011 | /* For debugging. */ | |
5566b478 MS |
2012 | static int no_print_functions = 0; |
2013 | static int no_print_builtins = 0; | |
8d08fdba MS |
2014 | |
2015 | void | |
2016 | print_binding_level (lvl) | |
2017 | struct binding_level *lvl; | |
2018 | { | |
2019 | tree t; | |
2020 | int i = 0, len; | |
2021 | fprintf (stderr, " blocks="); | |
2022 | fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks); | |
2023 | fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d", | |
f30432d7 | 2024 | list_length (lvl->incomplete), lvl->parm_flag, lvl->keep); |
8d08fdba MS |
2025 | if (lvl->tag_transparent) |
2026 | fprintf (stderr, " tag-transparent"); | |
2027 | if (lvl->more_cleanups_ok) | |
2028 | fprintf (stderr, " more-cleanups-ok"); | |
2029 | if (lvl->have_cleanups) | |
2030 | fprintf (stderr, " have-cleanups"); | |
8d08fdba MS |
2031 | fprintf (stderr, "\n"); |
2032 | if (lvl->names) | |
2033 | { | |
2034 | fprintf (stderr, " names:\t"); | |
2035 | /* We can probably fit 3 names to a line? */ | |
2036 | for (t = lvl->names; t; t = TREE_CHAIN (t)) | |
2037 | { | |
68642fb6 | 2038 | if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL)) |
8d08fdba MS |
2039 | continue; |
2040 | if (no_print_builtins | |
fc378698 MS |
2041 | && (TREE_CODE (t) == TYPE_DECL) |
2042 | && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>"))) | |
8d08fdba MS |
2043 | continue; |
2044 | ||
2045 | /* Function decls tend to have longer names. */ | |
2046 | if (TREE_CODE (t) == FUNCTION_DECL) | |
2047 | len = 3; | |
2048 | else | |
2049 | len = 2; | |
2050 | i += len; | |
2051 | if (i > 6) | |
2052 | { | |
2053 | fprintf (stderr, "\n\t"); | |
2054 | i = len; | |
2055 | } | |
2056 | print_node_brief (stderr, "", t, 0); | |
bd6dd845 | 2057 | if (t == error_mark_node) |
8d08fdba MS |
2058 | break; |
2059 | } | |
2060 | if (i) | |
2061 | fprintf (stderr, "\n"); | |
2062 | } | |
2063 | if (lvl->tags) | |
2064 | { | |
2065 | fprintf (stderr, " tags:\t"); | |
2066 | i = 0; | |
2067 | for (t = lvl->tags; t; t = TREE_CHAIN (t)) | |
2068 | { | |
2069 | if (TREE_PURPOSE (t) == NULL_TREE) | |
2070 | len = 3; | |
2071 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
2072 | len = 2; | |
2073 | else | |
2074 | len = 4; | |
2075 | i += len; | |
2076 | if (i > 5) | |
2077 | { | |
2078 | fprintf (stderr, "\n\t"); | |
2079 | i = len; | |
2080 | } | |
2081 | if (TREE_PURPOSE (t) == NULL_TREE) | |
2082 | { | |
2083 | print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0); | |
2084 | fprintf (stderr, ">"); | |
2085 | } | |
2086 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
2087 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
2088 | else | |
2089 | { | |
2090 | print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0); | |
2091 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
2092 | fprintf (stderr, ">"); | |
2093 | } | |
2094 | } | |
2095 | if (i) | |
2096 | fprintf (stderr, "\n"); | |
2097 | } | |
8d08fdba MS |
2098 | if (lvl->class_shadowed) |
2099 | { | |
2100 | fprintf (stderr, " class-shadowed:"); | |
2101 | for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t)) | |
2102 | { | |
2103 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); | |
2104 | } | |
2105 | fprintf (stderr, "\n"); | |
2106 | } | |
2107 | if (lvl->type_shadowed) | |
2108 | { | |
2109 | fprintf (stderr, " type-shadowed:"); | |
2110 | for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t)) | |
2111 | { | |
8d08fdba | 2112 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); |
8d08fdba MS |
2113 | } |
2114 | fprintf (stderr, "\n"); | |
2115 | } | |
2116 | } | |
2117 | ||
2118 | void | |
2119 | print_other_binding_stack (stack) | |
2120 | struct binding_level *stack; | |
2121 | { | |
2122 | struct binding_level *level; | |
2123 | for (level = stack; level != global_binding_level; level = level->level_chain) | |
2124 | { | |
2125 | fprintf (stderr, "binding level "); | |
2126 | fprintf (stderr, HOST_PTR_PRINTF, level); | |
2127 | fprintf (stderr, "\n"); | |
2128 | print_binding_level (level); | |
2129 | } | |
2130 | } | |
2131 | ||
2132 | void | |
2133 | print_binding_stack () | |
2134 | { | |
2135 | struct binding_level *b; | |
2136 | fprintf (stderr, "current_binding_level="); | |
2137 | fprintf (stderr, HOST_PTR_PRINTF, current_binding_level); | |
2138 | fprintf (stderr, "\nclass_binding_level="); | |
2139 | fprintf (stderr, HOST_PTR_PRINTF, class_binding_level); | |
2140 | fprintf (stderr, "\nglobal_binding_level="); | |
2141 | fprintf (stderr, HOST_PTR_PRINTF, global_binding_level); | |
2142 | fprintf (stderr, "\n"); | |
2143 | if (class_binding_level) | |
2144 | { | |
2145 | for (b = class_binding_level; b; b = b->level_chain) | |
2146 | if (b == current_binding_level) | |
2147 | break; | |
2148 | if (b) | |
2149 | b = class_binding_level; | |
2150 | else | |
2151 | b = current_binding_level; | |
2152 | } | |
2153 | else | |
2154 | b = current_binding_level; | |
2155 | print_other_binding_stack (b); | |
2156 | fprintf (stderr, "global:\n"); | |
2157 | print_binding_level (global_binding_level); | |
2158 | } | |
a9aedbc2 | 2159 | |
2c73f9f5 ML |
2160 | /* Namespace binding access routines: The namespace_bindings field of |
2161 | the identifier is polymorphic, with three possible values: | |
2162 | NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node | |
2163 | indicating the BINDING_VALUE of global_namespace. */ | |
30394414 | 2164 | |
2c73f9f5 ML |
2165 | /* Check whether the a binding for the name to scope is known. |
2166 | Assumes that the bindings of the name are already a list | |
2167 | of bindings. Returns the binding found, or NULL_TREE. */ | |
2168 | ||
2169 | static tree | |
2170 | find_binding (name, scope) | |
30394414 JM |
2171 | tree name; |
2172 | tree scope; | |
2173 | { | |
2c73f9f5 | 2174 | tree iter, prev = NULL_TREE; |
3e3f722c ML |
2175 | |
2176 | scope = ORIGINAL_NAMESPACE (scope); | |
68642fb6 | 2177 | |
30394414 JM |
2178 | for (iter = IDENTIFIER_NAMESPACE_BINDINGS (name); iter; |
2179 | iter = TREE_CHAIN (iter)) | |
2180 | { | |
2181 | my_friendly_assert (TREE_CODE (iter) == CPLUS_BINDING, 374); | |
2182 | if (BINDING_SCOPE (iter) == scope) | |
2c73f9f5 | 2183 | { |
cfe507be | 2184 | /* Move binding found to the front of the list, so |
2c73f9f5 ML |
2185 | subsequent lookups will find it faster. */ |
2186 | if (prev) | |
2187 | { | |
2188 | TREE_CHAIN (prev) = TREE_CHAIN (iter); | |
2189 | TREE_CHAIN (iter) = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2190 | IDENTIFIER_NAMESPACE_BINDINGS (name) = iter; | |
2191 | } | |
2192 | return iter; | |
2193 | } | |
2194 | prev = iter; | |
30394414 | 2195 | } |
2c73f9f5 ML |
2196 | return NULL_TREE; |
2197 | } | |
2198 | ||
2199 | /* Always returns a binding for name in scope. If the | |
2200 | namespace_bindings is not a list, convert it to one first. | |
2201 | If no binding is found, make a new one. */ | |
2202 | ||
2203 | tree | |
2204 | binding_for_name (name, scope) | |
2205 | tree name; | |
2206 | tree scope; | |
2207 | { | |
2208 | tree b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2209 | tree result; | |
3e3f722c ML |
2210 | |
2211 | scope = ORIGINAL_NAMESPACE (scope); | |
68642fb6 | 2212 | |
2c73f9f5 ML |
2213 | if (b && TREE_CODE (b) != CPLUS_BINDING) |
2214 | { | |
2215 | /* Get rid of optimization for global scope. */ | |
2216 | IDENTIFIER_NAMESPACE_BINDINGS (name) = NULL_TREE; | |
2217 | BINDING_VALUE (binding_for_name (name, global_namespace)) = b; | |
2218 | b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2219 | } | |
2220 | if (b && (result = find_binding (name, scope))) | |
2221 | return result; | |
cd9f6678 | 2222 | /* Not found, make a new one. */ |
2c73f9f5 ML |
2223 | result = make_node (CPLUS_BINDING); |
2224 | TREE_CHAIN (result) = b; | |
2225 | IDENTIFIER_NAMESPACE_BINDINGS (name) = result; | |
2226 | BINDING_SCOPE (result) = scope; | |
2227 | BINDING_TYPE (result) = NULL_TREE; | |
2228 | BINDING_VALUE (result) = NULL_TREE; | |
2c73f9f5 ML |
2229 | return result; |
2230 | } | |
2231 | ||
2232 | /* Return the binding value for name in scope, considering that | |
2233 | namespace_binding may or may not be a list of CPLUS_BINDINGS. */ | |
2234 | ||
2235 | tree | |
2236 | namespace_binding (name, scope) | |
2237 | tree name; | |
2238 | tree scope; | |
2239 | { | |
2240 | tree b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2241 | if (b == NULL_TREE) | |
2242 | return NULL_TREE; | |
cb0dbb9a JM |
2243 | if (scope == NULL_TREE) |
2244 | scope = global_namespace; | |
2c73f9f5 ML |
2245 | if (TREE_CODE (b) != CPLUS_BINDING) |
2246 | return (scope == global_namespace) ? b : NULL_TREE; | |
2247 | name = find_binding (name,scope); | |
2248 | if (name == NULL_TREE) | |
2249 | return name; | |
2250 | return BINDING_VALUE (name); | |
2251 | } | |
2252 | ||
2253 | /* Set the binding value for name in scope. If modifying the binding | |
2254 | of global_namespace is attempted, try to optimize it. */ | |
2255 | ||
2256 | void | |
2257 | set_namespace_binding (name, scope, val) | |
2258 | tree name; | |
2259 | tree scope; | |
2260 | tree val; | |
2261 | { | |
2262 | tree b; | |
cb0dbb9a JM |
2263 | |
2264 | if (scope == NULL_TREE) | |
2265 | scope = global_namespace; | |
68642fb6 | 2266 | |
2c73f9f5 ML |
2267 | if (scope == global_namespace) |
2268 | { | |
2269 | b = IDENTIFIER_NAMESPACE_BINDINGS (name); | |
2270 | if (b == NULL_TREE || TREE_CODE (b) != CPLUS_BINDING) | |
2271 | { | |
2272 | IDENTIFIER_NAMESPACE_BINDINGS (name) = val; | |
2273 | return; | |
2274 | } | |
2275 | } | |
2276 | b = binding_for_name (name, scope); | |
2277 | BINDING_VALUE (b) = val; | |
30394414 JM |
2278 | } |
2279 | ||
dff6b454 RK |
2280 | /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we |
2281 | select a name that is unique to this compilation unit. */ | |
e92cc029 | 2282 | |
a9aedbc2 MS |
2283 | void |
2284 | push_namespace (name) | |
2285 | tree name; | |
2286 | { | |
b370501f | 2287 | tree d = NULL_TREE; |
30394414 JM |
2288 | int need_new = 1; |
2289 | int implicit_use = 0; | |
2c73f9f5 | 2290 | int global = 0; |
30394414 JM |
2291 | if (!global_namespace) |
2292 | { | |
2c73f9f5 | 2293 | /* This must be ::. */ |
30394414 | 2294 | my_friendly_assert (name == get_identifier ("::"), 377); |
2c73f9f5 | 2295 | global = 1; |
30394414 JM |
2296 | } |
2297 | else if (!name) | |
2298 | { | |
3ab52652 ML |
2299 | /* The name of anonymous namespace is unique for the translation |
2300 | unit. */ | |
0c8feefe MM |
2301 | if (!anonymous_namespace_name) |
2302 | anonymous_namespace_name = get_file_function_name ('N'); | |
2303 | name = anonymous_namespace_name; | |
3ab52652 ML |
2304 | d = IDENTIFIER_NAMESPACE_VALUE (name); |
2305 | if (d) | |
2306 | /* Reopening anonymous namespace. */ | |
2307 | need_new = 0; | |
30394414 | 2308 | implicit_use = 1; |
2c73f9f5 ML |
2309 | } |
2310 | else if (current_namespace == global_namespace | |
6bcedb4e MM |
2311 | && !flag_honor_std |
2312 | && name == std_identifier) | |
2c73f9f5 | 2313 | { |
6bcedb4e | 2314 | in_fake_std++; |
2c73f9f5 ML |
2315 | return; |
2316 | } | |
30394414 JM |
2317 | else |
2318 | { | |
2c73f9f5 | 2319 | /* Check whether this is an extended namespace definition. */ |
30394414 JM |
2320 | d = IDENTIFIER_NAMESPACE_VALUE (name); |
2321 | if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL) | |
3e3f722c ML |
2322 | { |
2323 | need_new = 0; | |
2324 | if (DECL_NAMESPACE_ALIAS (d)) | |
2325 | { | |
8251199e | 2326 | cp_error ("namespace alias `%D' not allowed here, assuming `%D'", |
3e3f722c ML |
2327 | d, DECL_NAMESPACE_ALIAS (d)); |
2328 | d = DECL_NAMESPACE_ALIAS (d); | |
2329 | } | |
2330 | } | |
30394414 | 2331 | } |
68642fb6 | 2332 | |
30394414 JM |
2333 | if (need_new) |
2334 | { | |
2c73f9f5 | 2335 | /* Make a new namespace, binding the name to it. */ |
6b57ac29 | 2336 | d = build_lang_decl (NAMESPACE_DECL, name, void_type_node); |
2c73f9f5 ML |
2337 | /* The global namespace is not pushed, and the global binding |
2338 | level is set elsewhere. */ | |
2339 | if (!global) | |
2340 | { | |
40f1e342 | 2341 | DECL_CONTEXT (d) = FROB_CONTEXT (current_namespace); |
2c73f9f5 ML |
2342 | d = pushdecl (d); |
2343 | pushlevel (0); | |
2344 | declare_namespace_level (); | |
2345 | NAMESPACE_LEVEL (d) = current_binding_level; | |
2346 | } | |
30394414 | 2347 | } |
2c73f9f5 ML |
2348 | else |
2349 | resume_binding_level (NAMESPACE_LEVEL (d)); | |
2350 | ||
30394414 JM |
2351 | if (implicit_use) |
2352 | do_using_directive (d); | |
2c73f9f5 | 2353 | /* Enter the name space. */ |
30394414 | 2354 | current_namespace = d; |
a9aedbc2 MS |
2355 | } |
2356 | ||
2357 | /* Pop from the scope of the current namespace. */ | |
e92cc029 | 2358 | |
a9aedbc2 MS |
2359 | void |
2360 | pop_namespace () | |
2361 | { | |
2c73f9f5 ML |
2362 | if (current_namespace == global_namespace) |
2363 | { | |
6bcedb4e MM |
2364 | my_friendly_assert (in_fake_std > 0, 980421); |
2365 | in_fake_std--; | |
2c73f9f5 ML |
2366 | return; |
2367 | } | |
cb0dbb9a | 2368 | current_namespace = CP_DECL_CONTEXT (current_namespace); |
2c73f9f5 ML |
2369 | /* The binding level is not popped, as it might be re-opened later. */ |
2370 | suspend_binding_level (); | |
2371 | } | |
a9aedbc2 | 2372 | |
61fc8c9e MM |
2373 | /* Push into the scope of the namespace NS, even if it is deeply |
2374 | nested within another namespace. */ | |
2375 | ||
2376 | void | |
2377 | push_nested_namespace (ns) | |
2378 | tree ns; | |
2379 | { | |
2380 | if (ns == global_namespace) | |
2381 | push_to_top_level (); | |
2382 | else | |
2383 | { | |
2384 | push_nested_namespace (CP_DECL_CONTEXT (ns)); | |
2385 | push_namespace (DECL_NAME (ns)); | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* Pop back from the scope of the namespace NS, which was previously | |
2390 | entered with push_nested_namespace. */ | |
68642fb6 | 2391 | |
61fc8c9e MM |
2392 | void |
2393 | pop_nested_namespace (ns) | |
2394 | tree ns; | |
2395 | { | |
2396 | while (ns != global_namespace) | |
2397 | { | |
2398 | pop_namespace (); | |
2399 | ns = CP_DECL_CONTEXT (ns); | |
2400 | } | |
2401 | ||
2402 | pop_from_top_level (); | |
2403 | } | |
2404 | ||
8d08fdba MS |
2405 | \f |
2406 | /* Subroutines for reverting temporarily to top-level for instantiation | |
2407 | of templates and such. We actually need to clear out the class- and | |
2408 | local-value slots of all identifiers, so that only the global values | |
2409 | are at all visible. Simply setting current_binding_level to the global | |
2410 | scope isn't enough, because more binding levels may be pushed. */ | |
9cd64686 | 2411 | struct saved_scope *scope_chain; |
8d08fdba | 2412 | |
9cd64686 | 2413 | /* Mark ARG (which is really a struct saved_scope **) for GC. */ |
fc6af6e3 RH |
2414 | |
2415 | static void | |
2416 | mark_saved_scope (arg) | |
2417 | void *arg; | |
2418 | { | |
2419 | struct saved_scope *t = *(struct saved_scope **)arg; | |
2420 | while (t) | |
2421 | { | |
fc6af6e3 RH |
2422 | mark_binding_level (&t->class_bindings); |
2423 | ggc_mark_tree (t->old_bindings); | |
2424 | ggc_mark_tree (t->old_namespace); | |
ee8fc32b | 2425 | ggc_mark_tree (t->decl_ns_list); |
fc6af6e3 RH |
2426 | ggc_mark_tree (t->class_name); |
2427 | ggc_mark_tree (t->class_type); | |
2428 | ggc_mark_tree (t->access_specifier); | |
a8f73d4b | 2429 | ggc_mark_tree (t->function_decl); |
fc6af6e3 | 2430 | if (t->lang_base) |
9cd64686 | 2431 | ggc_mark_tree_varray (t->lang_base); |
fc6af6e3 | 2432 | ggc_mark_tree (t->lang_name); |
fc6af6e3 | 2433 | ggc_mark_tree (t->template_parms); |
9cd64686 MM |
2434 | ggc_mark_tree (t->x_previous_class_type); |
2435 | ggc_mark_tree (t->x_previous_class_values); | |
6f80451c | 2436 | ggc_mark_tree (t->x_saved_tree); |
70adf8a9 JM |
2437 | ggc_mark_tree (t->incomplete); |
2438 | ggc_mark_tree (t->lookups); | |
6f80451c MM |
2439 | |
2440 | mark_stmt_tree (&t->x_stmt_tree); | |
a8f73d4b | 2441 | mark_binding_level (&t->bindings); |
fc6af6e3 RH |
2442 | t = t->prev; |
2443 | } | |
2444 | } | |
2445 | ||
e92cc029 | 2446 | static tree |
45537677 MS |
2447 | store_bindings (names, old_bindings) |
2448 | tree names, old_bindings; | |
2449 | { | |
2450 | tree t; | |
c00996a3 JM |
2451 | tree search_bindings = old_bindings; |
2452 | ||
45537677 MS |
2453 | for (t = names; t; t = TREE_CHAIN (t)) |
2454 | { | |
2455 | tree binding, t1, id; | |
2456 | ||
2457 | if (TREE_CODE (t) == TREE_LIST) | |
2458 | id = TREE_PURPOSE (t); | |
2459 | else | |
2460 | id = DECL_NAME (t); | |
2461 | ||
68642fb6 | 2462 | if (!id |
f181d4ae MM |
2463 | /* Note that we may have an IDENTIFIER_CLASS_VALUE even when |
2464 | we have no IDENTIFIER_BINDING if we have left the class | |
2465 | scope, but cached the class-level declarations. */ | |
2466 | || !(IDENTIFIER_BINDING (id) || IDENTIFIER_CLASS_VALUE (id))) | |
45537677 MS |
2467 | continue; |
2468 | ||
c00996a3 | 2469 | for (t1 = search_bindings; t1; t1 = TREE_CHAIN (t1)) |
45537677 MS |
2470 | if (TREE_VEC_ELT (t1, 0) == id) |
2471 | goto skip_it; | |
78957a2a | 2472 | |
31a714f6 | 2473 | my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135); |
87e3dbc9 | 2474 | binding = make_tree_vec (4); |
31a714f6 MM |
2475 | TREE_VEC_ELT (binding, 0) = id; |
2476 | TREE_VEC_ELT (binding, 1) = REAL_IDENTIFIER_TYPE_VALUE (id); | |
2477 | TREE_VEC_ELT (binding, 2) = IDENTIFIER_BINDING (id); | |
2478 | TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id); | |
2479 | IDENTIFIER_BINDING (id) = NULL_TREE; | |
2480 | IDENTIFIER_CLASS_VALUE (id) = NULL_TREE; | |
45537677 MS |
2481 | TREE_CHAIN (binding) = old_bindings; |
2482 | old_bindings = binding; | |
2483 | skip_it: | |
2484 | ; | |
2485 | } | |
2486 | return old_bindings; | |
2487 | } | |
2488 | ||
8d08fdba | 2489 | void |
5566b478 MS |
2490 | maybe_push_to_top_level (pseudo) |
2491 | int pseudo; | |
8d08fdba | 2492 | { |
a8f73d4b | 2493 | struct saved_scope *s; |
9cd64686 | 2494 | struct binding_level *b; |
a8f73d4b MM |
2495 | tree old_bindings; |
2496 | int need_pop; | |
2497 | ||
2498 | s = (struct saved_scope *) xcalloc (1, sizeof (struct saved_scope)); | |
8d08fdba | 2499 | |
9cd64686 MM |
2500 | b = scope_chain ? current_binding_level : 0; |
2501 | ||
a8f73d4b | 2502 | /* If we're in the middle of some function, save our state. */ |
01d939e8 | 2503 | if (cfun) |
a8f73d4b MM |
2504 | { |
2505 | need_pop = 1; | |
2506 | push_function_context_to (NULL_TREE); | |
2507 | } | |
2508 | else | |
2509 | need_pop = 0; | |
e349ee73 | 2510 | |
a8f73d4b | 2511 | old_bindings = NULL_TREE; |
9cd64686 | 2512 | if (scope_chain && previous_class_type) |
a50f0918 MS |
2513 | old_bindings = store_bindings (previous_class_values, old_bindings); |
2514 | ||
8d08fdba MS |
2515 | /* Have to include global_binding_level, because class-level decls |
2516 | aren't listed anywhere useful. */ | |
2517 | for (; b; b = b->level_chain) | |
2518 | { | |
2519 | tree t; | |
2520 | ||
2c73f9f5 ML |
2521 | /* Template IDs are inserted into the global level. If they were |
2522 | inserted into namespace level, finish_file wouldn't find them | |
2523 | when doing pending instantiations. Therefore, don't stop at | |
2524 | namespace level, but continue until :: . */ | |
74b846e0 | 2525 | if (b == global_binding_level || (pseudo && b->template_parms_p)) |
5566b478 | 2526 | break; |
8d08fdba | 2527 | |
45537677 | 2528 | old_bindings = store_bindings (b->names, old_bindings); |
cffa8729 | 2529 | /* We also need to check class_shadowed to save class-level type |
45537677 MS |
2530 | bindings, since pushclass doesn't fill in b->names. */ |
2531 | if (b->parm_flag == 2) | |
cffa8729 | 2532 | old_bindings = store_bindings (b->class_shadowed, old_bindings); |
8d08fdba | 2533 | |
8d08fdba MS |
2534 | /* Unwind type-value slots back to top level. */ |
2535 | for (t = b->type_shadowed; t; t = TREE_CHAIN (t)) | |
2536 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t)); | |
2537 | } | |
fc0e7bf5 MM |
2538 | s->prev = scope_chain; |
2539 | s->old_bindings = old_bindings; | |
a8f73d4b MM |
2540 | s->bindings = b; |
2541 | s->need_pop_function_context = need_pop; | |
2542 | s->function_decl = current_function_decl; | |
fc0e7bf5 MM |
2543 | |
2544 | scope_chain = s; | |
8d08fdba | 2545 | current_function_decl = NULL_TREE; |
9cd64686 | 2546 | VARRAY_TREE_INIT (current_lang_base, 10, "current_lang_base"); |
51c184be | 2547 | current_lang_name = lang_name_cplusplus; |
2c73f9f5 | 2548 | current_namespace = global_namespace; |
5566b478 MS |
2549 | } |
2550 | ||
2551 | void | |
2552 | push_to_top_level () | |
2553 | { | |
2554 | maybe_push_to_top_level (0); | |
8d08fdba MS |
2555 | } |
2556 | ||
2557 | void | |
2558 | pop_from_top_level () | |
2559 | { | |
9cd64686 | 2560 | struct saved_scope *s = scope_chain; |
8d08fdba MS |
2561 | tree t; |
2562 | ||
e76a2646 | 2563 | /* Clear out class-level bindings cache. */ |
8d08fdba | 2564 | if (previous_class_type) |
8f032717 | 2565 | invalidate_class_lookup_cache (); |
8d08fdba | 2566 | |
9cd64686 MM |
2567 | VARRAY_FREE (current_lang_base); |
2568 | ||
2569 | scope_chain = s->prev; | |
87e3dbc9 | 2570 | for (t = s->old_bindings; t; t = TREE_CHAIN (t)) |
8d08fdba MS |
2571 | { |
2572 | tree id = TREE_VEC_ELT (t, 0); | |
31a714f6 MM |
2573 | |
2574 | SET_IDENTIFIER_TYPE_VALUE (id, TREE_VEC_ELT (t, 1)); | |
2575 | IDENTIFIER_BINDING (id) = TREE_VEC_ELT (t, 2); | |
2576 | IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3); | |
8d08fdba | 2577 | } |
9cd64686 | 2578 | |
a8f73d4b MM |
2579 | /* If we were in the middle of compiling a function, restore our |
2580 | state. */ | |
2581 | if (s->need_pop_function_context) | |
2582 | pop_function_context_from (NULL_TREE); | |
2583 | current_function_decl = s->function_decl; | |
e349ee73 | 2584 | |
a8f73d4b | 2585 | free (s); |
8d08fdba MS |
2586 | } |
2587 | \f | |
2588 | /* Push a definition of struct, union or enum tag "name". | |
68642fb6 | 2589 | into binding_level "b". "type" should be the type node, |
8d08fdba MS |
2590 | We assume that the tag "name" is not already defined. |
2591 | ||
2592 | Note that the definition may really be just a forward reference. | |
2593 | In that case, the TYPE_SIZE will be a NULL_TREE. | |
2594 | ||
e92cc029 | 2595 | C++ gratuitously puts all these tags in the name space. */ |
8d08fdba MS |
2596 | |
2597 | /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID, | |
2598 | record the shadowed value for this binding contour. TYPE is | |
2599 | the type that ID maps to. */ | |
2600 | ||
2601 | static void | |
2602 | set_identifier_type_value_with_scope (id, type, b) | |
2603 | tree id; | |
2604 | tree type; | |
2605 | struct binding_level *b; | |
2606 | { | |
2c73f9f5 | 2607 | if (!b->namespace_p) |
8d08fdba | 2608 | { |
2c73f9f5 ML |
2609 | /* Shadow the marker, not the real thing, so that the marker |
2610 | gets restored later. */ | |
2611 | tree old_type_value = REAL_IDENTIFIER_TYPE_VALUE (id); | |
8d08fdba MS |
2612 | b->type_shadowed |
2613 | = tree_cons (id, old_type_value, b->type_shadowed); | |
2614 | } | |
2c73f9f5 ML |
2615 | else |
2616 | { | |
2617 | tree binding = binding_for_name (id, current_namespace); | |
2618 | BINDING_TYPE (binding) = type; | |
2619 | /* Store marker instead of real type. */ | |
2620 | type = global_type_node; | |
2621 | } | |
8d08fdba MS |
2622 | SET_IDENTIFIER_TYPE_VALUE (id, type); |
2623 | } | |
2624 | ||
8f032717 | 2625 | /* As set_identifier_type_value_with_scope, but using current_binding_level. */ |
8d08fdba MS |
2626 | |
2627 | void | |
2628 | set_identifier_type_value (id, type) | |
2629 | tree id; | |
2630 | tree type; | |
2631 | { | |
8f032717 | 2632 | set_identifier_type_value_with_scope (id, type, current_binding_level); |
8d08fdba MS |
2633 | } |
2634 | ||
2c73f9f5 ML |
2635 | /* Return the type associated with id. */ |
2636 | ||
2637 | tree | |
2638 | identifier_type_value (id) | |
2639 | tree id; | |
2640 | { | |
2641 | /* There is no type with that name, anywhere. */ | |
2642 | if (REAL_IDENTIFIER_TYPE_VALUE (id) == NULL_TREE) | |
2643 | return NULL_TREE; | |
2644 | /* This is not the type marker, but the real thing. */ | |
2645 | if (REAL_IDENTIFIER_TYPE_VALUE (id) != global_type_node) | |
2646 | return REAL_IDENTIFIER_TYPE_VALUE (id); | |
2647 | /* Have to search for it. It must be on the global level, now. | |
2648 | Ask lookup_name not to return non-types. */ | |
3e3f722c | 2649 | id = lookup_name_real (id, 2, 1, 0); |
2c73f9f5 ML |
2650 | if (id) |
2651 | return TREE_TYPE (id); | |
2652 | return NULL_TREE; | |
2653 | } | |
2654 | ||
a9aedbc2 MS |
2655 | /* Pop off extraneous binding levels left over due to syntax errors. |
2656 | ||
2657 | We don't pop past namespaces, as they might be valid. */ | |
e92cc029 | 2658 | |
8926095f MS |
2659 | void |
2660 | pop_everything () | |
2661 | { | |
2662 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2663 | fprintf (stderr, "XXX entering pop_everything ()\n"); | |
2664 | #endif | |
8f032717 | 2665 | while (!toplevel_bindings_p ()) |
8926095f | 2666 | { |
8f032717 | 2667 | if (current_binding_level->parm_flag == 2) |
b74a0560 | 2668 | pop_nested_class (); |
8926095f MS |
2669 | else |
2670 | poplevel (0, 0, 0); | |
2671 | } | |
2672 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2673 | fprintf (stderr, "XXX leaving pop_everything ()\n"); | |
2674 | #endif | |
2675 | } | |
2676 | ||
39c01e4c MM |
2677 | /* The type TYPE is being declared. If it is a class template, or a |
2678 | specialization of a class template, do any processing required and | |
2679 | perform error-checking. If IS_FRIEND is non-zero, this TYPE is | |
2680 | being declared a friend. B is the binding level at which this TYPE | |
2681 | should be bound. | |
2682 | ||
2683 | Returns the TYPE_DECL for TYPE, which may have been altered by this | |
2684 | processing. */ | |
2685 | ||
68642fb6 | 2686 | static tree |
39c01e4c MM |
2687 | maybe_process_template_type_declaration (type, globalize, b) |
2688 | tree type; | |
2689 | int globalize; | |
2690 | struct binding_level* b; | |
2691 | { | |
2692 | tree decl = TYPE_NAME (type); | |
68642fb6 | 2693 | |
39c01e4c MM |
2694 | if (processing_template_parmlist) |
2695 | /* You can't declare a new template type in a template parameter | |
2696 | list. But, you can declare a non-template type: | |
68642fb6 | 2697 | |
39c01e4c | 2698 | template <class A*> struct S; |
68642fb6 | 2699 | |
39c01e4c MM |
2700 | is a forward-declaration of `A'. */ |
2701 | ; | |
68642fb6 | 2702 | else |
39c01e4c MM |
2703 | { |
2704 | maybe_check_template_type (type); | |
2705 | ||
68642fb6 | 2706 | my_friendly_assert (IS_AGGR_TYPE (type) |
ed44da02 | 2707 | || TREE_CODE (type) == ENUMERAL_TYPE, 0); |
68642fb6 UD |
2708 | |
2709 | ||
3ebc5c52 | 2710 | if (processing_template_decl) |
39c01e4c MM |
2711 | { |
2712 | /* This may change after the call to | |
2713 | push_template_decl_real, but we want the original value. */ | |
2714 | tree name = DECL_NAME (decl); | |
2715 | ||
2716 | decl = push_template_decl_real (decl, globalize); | |
2717 | /* If the current binding level is the binding level for the | |
2718 | template parameters (see the comment in | |
2719 | begin_template_parm_list) and the enclosing level is a class | |
2720 | scope, and we're not looking at a friend, push the | |
2721 | declaration of the member class into the class scope. In the | |
2722 | friend case, push_template_decl will already have put the | |
2723 | friend into global scope, if appropriate. */ | |
ed44da02 | 2724 | if (TREE_CODE (type) != ENUMERAL_TYPE |
74b846e0 | 2725 | && !globalize && b->template_parms_p |
39c01e4c MM |
2726 | && b->level_chain->parm_flag == 2) |
2727 | { | |
61a127b3 | 2728 | finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type)); |
39c01e4c MM |
2729 | /* Put this tag on the list of tags for the class, since |
2730 | that won't happen below because B is not the class | |
2731 | binding level, but is instead the pseudo-global level. */ | |
68642fb6 | 2732 | b->level_chain->tags = |
e1b3e07d | 2733 | tree_cons (name, type, b->level_chain->tags); |
d0f062fb | 2734 | if (!COMPLETE_TYPE_P (current_class_type)) |
39c01e4c MM |
2735 | CLASSTYPE_TAGS (current_class_type) = b->level_chain->tags; |
2736 | } | |
2737 | } | |
2738 | } | |
2739 | ||
2740 | return decl; | |
2741 | } | |
2742 | ||
9188c363 MM |
2743 | /* In C++, you don't have to write `struct S' to refer to `S'; you |
2744 | can just use `S'. We accomplish this by creating a TYPE_DECL as | |
2745 | if the user had written `typedef struct S S'. Create and return | |
2746 | the TYPE_DECL for TYPE. */ | |
2747 | ||
2748 | tree | |
2749 | create_implicit_typedef (name, type) | |
2750 | tree name; | |
2751 | tree type; | |
2752 | { | |
2753 | tree decl; | |
2754 | ||
2755 | decl = build_decl (TYPE_DECL, name, type); | |
c727aa5e | 2756 | DECL_ARTIFICIAL (decl) = 1; |
9188c363 MM |
2757 | /* There are other implicit type declarations, like the one *within* |
2758 | a class that allows you to write `S::S'. We must distinguish | |
2759 | amongst these. */ | |
2760 | SET_DECL_IMPLICIT_TYPEDEF_P (decl); | |
2761 | TYPE_NAME (type) = decl; | |
2762 | ||
2763 | return decl; | |
2764 | } | |
2765 | ||
8e4ce833 JJ |
2766 | /* Remember a local name for name-mangling purposes. */ |
2767 | ||
2768 | static void | |
2769 | push_local_name (decl) | |
2770 | tree decl; | |
2771 | { | |
2772 | size_t i, nelts; | |
2773 | tree t, name; | |
2774 | ||
2775 | if (!local_names) | |
2776 | VARRAY_TREE_INIT (local_names, 8, "local_names"); | |
2777 | ||
2778 | name = DECL_NAME (decl); | |
2779 | ||
2780 | nelts = VARRAY_ACTIVE_SIZE (local_names); | |
2781 | for (i = 0; i < nelts; i++) | |
2782 | { | |
2783 | t = VARRAY_TREE (local_names, i); | |
2784 | if (DECL_NAME (t) == name) | |
2785 | { | |
2786 | if (!DECL_LANG_SPECIFIC (decl)) | |
2787 | retrofit_lang_decl (decl); | |
2788 | if (DECL_LANG_SPECIFIC (t)) | |
2789 | DECL_DISCRIMINATOR (decl) = DECL_DISCRIMINATOR (t) + 1; | |
2790 | else | |
2791 | DECL_DISCRIMINATOR (decl) = 1; | |
2792 | ||
2793 | VARRAY_TREE (local_names, i) = decl; | |
2794 | return; | |
2795 | } | |
2796 | } | |
2797 | ||
2798 | VARRAY_PUSH_TREE (local_names, decl); | |
2799 | } | |
2800 | ||
8d08fdba | 2801 | /* Push a tag name NAME for struct/class/union/enum type TYPE. |
6757edfe | 2802 | Normally put it into the inner-most non-tag-transparent scope, |
8d08fdba | 2803 | but if GLOBALIZE is true, put it in the inner-most non-class scope. |
e92cc029 | 2804 | The latter is needed for implicit declarations. */ |
8d08fdba MS |
2805 | |
2806 | void | |
2807 | pushtag (name, type, globalize) | |
2808 | tree name, type; | |
2809 | int globalize; | |
2810 | { | |
2811 | register struct binding_level *b; | |
8d08fdba | 2812 | |
8f032717 | 2813 | b = current_binding_level; |
8d08fdba MS |
2814 | while (b->tag_transparent |
2815 | || (globalize && b->parm_flag == 2)) | |
2816 | b = b->level_chain; | |
2817 | ||
e1b3e07d | 2818 | b->tags = tree_cons (name, type, b->tags); |
8d08fdba MS |
2819 | |
2820 | if (name) | |
2821 | { | |
8d08fdba | 2822 | /* Do C++ gratuitous typedefing. */ |
db5ae43f | 2823 | if (IDENTIFIER_TYPE_VALUE (name) != type) |
8d08fdba | 2824 | { |
93cdc044 | 2825 | register tree d = NULL_TREE; |
848cf1e0 | 2826 | int in_class = 0; |
9188c363 | 2827 | tree context = TYPE_CONTEXT (type); |
280f9385 | 2828 | |
280f9385 MM |
2829 | if (! context) |
2830 | { | |
2831 | tree cs = current_scope (); | |
2832 | ||
2833 | if (! globalize) | |
2834 | context = cs; | |
2f939d94 | 2835 | else if (cs != NULL_TREE && TYPE_P (cs)) |
280f9385 MM |
2836 | /* When declaring a friend class of a local class, we want |
2837 | to inject the newly named class into the scope | |
2838 | containing the local class, not the namespace scope. */ | |
4f1c5b7d | 2839 | context = decl_function_context (get_type_decl (cs)); |
280f9385 | 2840 | } |
280f9385 MM |
2841 | if (!context) |
2842 | context = current_namespace; | |
8d08fdba | 2843 | |
74b846e0 | 2844 | if ((b->template_parms_p && b->level_chain->parm_flag == 2) |
93cdc044 JM |
2845 | || b->parm_flag == 2) |
2846 | in_class = 1; | |
93cdc044 | 2847 | |
848cf1e0 MM |
2848 | if (current_lang_name == lang_name_java) |
2849 | TYPE_FOR_JAVA (type) = 1; | |
93cdc044 | 2850 | |
9188c363 | 2851 | d = create_implicit_typedef (name, type); |
cb0dbb9a | 2852 | DECL_CONTEXT (d) = FROB_CONTEXT (context); |
9188c363 MM |
2853 | if (! in_class) |
2854 | set_identifier_type_value_with_scope (name, type, b); | |
e1cd6e56 | 2855 | |
39c01e4c MM |
2856 | d = maybe_process_template_type_declaration (type, |
2857 | globalize, b); | |
93cdc044 JM |
2858 | |
2859 | if (b->parm_flag == 2) | |
61a127b3 | 2860 | { |
848cf1e0 | 2861 | if (!PROCESSING_REAL_TEMPLATE_DECL_P ()) |
61a127b3 MM |
2862 | /* Put this TYPE_DECL on the TYPE_FIELDS list for the |
2863 | class. But if it's a member template class, we | |
2864 | want the TEMPLATE_DECL, not the TYPE_DECL, so this | |
2865 | is done later. */ | |
2866 | finish_member_declaration (d); | |
8f032717 MM |
2867 | else |
2868 | pushdecl_class_level (d); | |
61a127b3 | 2869 | } |
93cdc044 JM |
2870 | else |
2871 | d = pushdecl_with_scope (d, b); | |
2872 | ||
1951a1b6 | 2873 | /* FIXME what if it gets a name from typedef? */ |
848cf1e0 MM |
2874 | if (ANON_AGGRNAME_P (name)) |
2875 | DECL_IGNORED_P (d) = 1; | |
2876 | ||
2877 | TYPE_CONTEXT (type) = DECL_CONTEXT (d); | |
1f6e1acc AS |
2878 | |
2879 | /* If this is a local class, keep track of it. We need this | |
2880 | information for name-mangling, and so that it is possible to find | |
2881 | all function definitions in a translation unit in a convenient | |
2882 | way. (It's otherwise tricky to find a member function definition | |
2883 | it's only pointed to from within a local class.) */ | |
5362b086 | 2884 | if (TYPE_CONTEXT (type) |
089acd57 MM |
2885 | && TREE_CODE (TYPE_CONTEXT (type)) == FUNCTION_DECL |
2886 | && !processing_template_decl) | |
1f6e1acc | 2887 | VARRAY_PUSH_TREE (local_classes, type); |
8d08fdba MS |
2888 | } |
2889 | if (b->parm_flag == 2) | |
2890 | { | |
d0f062fb | 2891 | if (!COMPLETE_TYPE_P (current_class_type)) |
8d08fdba MS |
2892 | CLASSTYPE_TAGS (current_class_type) = b->tags; |
2893 | } | |
2894 | } | |
2895 | ||
2896 | if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
2897 | /* Use the canonical TYPE_DECL for this node. */ | |
2898 | TYPE_STUB_DECL (type) = TYPE_NAME (type); | |
2899 | else | |
2900 | { | |
2901 | /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE | |
2902 | will be the tagged type we just added to the current | |
2903 | binding level. This fake NULL-named TYPE_DECL node helps | |
2904 | dwarfout.c to know when it needs to output a | |
2905 | representation of a tagged type, and it also gives us a | |
2906 | convenient place to record the "scope start" address for | |
2907 | the tagged type. */ | |
2908 | ||
8d08fdba | 2909 | tree d = build_decl (TYPE_DECL, NULL_TREE, type); |
8d08fdba MS |
2910 | TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b); |
2911 | } | |
2912 | } | |
2913 | ||
2914 | /* Counter used to create anonymous type names. */ | |
e92cc029 | 2915 | |
8d08fdba MS |
2916 | static int anon_cnt = 0; |
2917 | ||
2918 | /* Return an IDENTIFIER which can be used as a name for | |
2919 | anonymous structs and unions. */ | |
e92cc029 | 2920 | |
8d08fdba MS |
2921 | tree |
2922 | make_anon_name () | |
2923 | { | |
2924 | char buf[32]; | |
2925 | ||
2926 | sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++); | |
2927 | return get_identifier (buf); | |
2928 | } | |
2929 | ||
2930 | /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames. | |
2931 | This keeps dbxout from getting confused. */ | |
e92cc029 | 2932 | |
8d08fdba MS |
2933 | void |
2934 | clear_anon_tags () | |
2935 | { | |
2936 | register struct binding_level *b; | |
2937 | register tree tags; | |
2938 | static int last_cnt = 0; | |
2939 | ||
2940 | /* Fast out if no new anon names were declared. */ | |
2941 | if (last_cnt == anon_cnt) | |
2942 | return; | |
2943 | ||
2944 | b = current_binding_level; | |
2945 | while (b->tag_transparent) | |
2946 | b = b->level_chain; | |
2947 | tags = b->tags; | |
2948 | while (tags) | |
2949 | { | |
2950 | /* A NULL purpose means we have already processed all tags | |
2951 | from here to the end of the list. */ | |
2952 | if (TREE_PURPOSE (tags) == NULL_TREE) | |
2953 | break; | |
2954 | if (ANON_AGGRNAME_P (TREE_PURPOSE (tags))) | |
2955 | TREE_PURPOSE (tags) = NULL_TREE; | |
2956 | tags = TREE_CHAIN (tags); | |
2957 | } | |
2958 | last_cnt = anon_cnt; | |
2959 | } | |
2960 | \f | |
2961 | /* Subroutine of duplicate_decls: return truthvalue of whether | |
2962 | or not types of these decls match. | |
2963 | ||
2964 | For C++, we must compare the parameter list so that `int' can match | |
2965 | `int&' in a parameter position, but `int&' is not confused with | |
2966 | `const int&'. */ | |
e92cc029 | 2967 | |
6060a796 | 2968 | int |
8d08fdba MS |
2969 | decls_match (newdecl, olddecl) |
2970 | tree newdecl, olddecl; | |
2971 | { | |
2972 | int types_match; | |
2973 | ||
347d73d7 ML |
2974 | if (newdecl == olddecl) |
2975 | return 1; | |
2976 | ||
6b4b3deb MM |
2977 | if (TREE_CODE (newdecl) != TREE_CODE (olddecl)) |
2978 | /* If the two DECLs are not even the same kind of thing, we're not | |
2979 | interested in their types. */ | |
2980 | return 0; | |
2981 | ||
2982 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
8d08fdba MS |
2983 | { |
2984 | tree f1 = TREE_TYPE (newdecl); | |
2985 | tree f2 = TREE_TYPE (olddecl); | |
2986 | tree p1 = TYPE_ARG_TYPES (f1); | |
2987 | tree p2 = TYPE_ARG_TYPES (f2); | |
2988 | ||
4f1c5b7d | 2989 | if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl) |
eb68cb58 MM |
2990 | && ! (DECL_EXTERN_C_P (newdecl) |
2991 | && DECL_EXTERN_C_P (olddecl))) | |
c5a6fc45 JM |
2992 | return 0; |
2993 | ||
8d08fdba | 2994 | if (TREE_CODE (f1) != TREE_CODE (f2)) |
e867a179 | 2995 | return 0; |
8d08fdba | 2996 | |
3bfdc719 | 2997 | if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2))) |
8926095f | 2998 | { |
8b27e9ef NS |
2999 | if (p2 == NULL_TREE && DECL_EXTERN_C_P (olddecl) |
3000 | && (DECL_BUILT_IN (olddecl) | |
3001 | #ifndef NO_IMPLICIT_EXTERN_C | |
3002 | || (DECL_IN_SYSTEM_HEADER (newdecl) && !DECL_CLASS_SCOPE_P (newdecl)) | |
3003 | || (DECL_IN_SYSTEM_HEADER (olddecl) && !DECL_CLASS_SCOPE_P (olddecl)) | |
3004 | #endif | |
3005 | )) | |
a28e3c7f MS |
3006 | { |
3007 | types_match = self_promoting_args_p (p1); | |
3008 | if (p1 == void_list_node) | |
3009 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
3010 | } | |
8b27e9ef NS |
3011 | #ifndef NO_IMPLICIT_EXTERN_C |
3012 | else if (p1 == NULL_TREE | |
3013 | && (DECL_EXTERN_C_P (olddecl) | |
3014 | && DECL_IN_SYSTEM_HEADER (olddecl) | |
3015 | && !DECL_CLASS_SCOPE_P (olddecl)) | |
3016 | && (DECL_EXTERN_C_P (newdecl) | |
3017 | && DECL_IN_SYSTEM_HEADER (newdecl) | |
3018 | && !DECL_CLASS_SCOPE_P (newdecl))) | |
a28e3c7f MS |
3019 | { |
3020 | types_match = self_promoting_args_p (p2); | |
3021 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
3022 | } | |
8b27e9ef | 3023 | #endif |
8926095f | 3024 | else |
91063b51 | 3025 | types_match = compparms (p1, p2); |
8926095f | 3026 | } |
8d08fdba MS |
3027 | else |
3028 | types_match = 0; | |
3029 | } | |
6b4b3deb | 3030 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
51c184be | 3031 | { |
f84b4be9 JM |
3032 | if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl), |
3033 | DECL_TEMPLATE_PARMS (olddecl))) | |
3034 | return 0; | |
68642fb6 | 3035 | |
2bb5d995 JM |
3036 | if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) |
3037 | != TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))) | |
3038 | return 0; | |
3039 | ||
f84b4be9 JM |
3040 | if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) |
3041 | types_match = 1; | |
3042 | else | |
3043 | types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl), | |
3044 | DECL_TEMPLATE_RESULT (newdecl)); | |
51c184be | 3045 | } |
8d08fdba MS |
3046 | else |
3047 | { | |
3048 | if (TREE_TYPE (newdecl) == error_mark_node) | |
3049 | types_match = TREE_TYPE (olddecl) == error_mark_node; | |
3050 | else if (TREE_TYPE (olddecl) == NULL_TREE) | |
3051 | types_match = TREE_TYPE (newdecl) == NULL_TREE; | |
a0a33927 MS |
3052 | else if (TREE_TYPE (newdecl) == NULL_TREE) |
3053 | types_match = 0; | |
8d08fdba | 3054 | else |
01240200 | 3055 | types_match = comptypes (TREE_TYPE (newdecl), |
3bfdc719 MM |
3056 | TREE_TYPE (olddecl), |
3057 | COMPARE_REDECLARATION); | |
8d08fdba MS |
3058 | } |
3059 | ||
3060 | return types_match; | |
3061 | } | |
3062 | ||
3063 | /* If NEWDECL is `static' and an `extern' was seen previously, | |
24f30ed4 | 3064 | warn about it. OLDDECL is the previous declaration. |
8d08fdba MS |
3065 | |
3066 | Note that this does not apply to the C++ case of declaring | |
3067 | a variable `extern const' and then later `const'. | |
3068 | ||
8d08fdba MS |
3069 | Don't complain about built-in functions, since they are beyond |
3070 | the user's control. */ | |
3071 | ||
3072 | static void | |
3073 | warn_extern_redeclared_static (newdecl, olddecl) | |
3074 | tree newdecl, olddecl; | |
3075 | { | |
d8e178a0 | 3076 | static const char *explicit_extern_static_warning |
8251199e | 3077 | = "`%D' was declared `extern' and later `static'"; |
d8e178a0 | 3078 | static const char *implicit_extern_static_warning |
8251199e JM |
3079 | = "`%D' was declared implicitly `extern' and later `static'"; |
3080 | ||
24f30ed4 MM |
3081 | tree name; |
3082 | ||
68642fb6 | 3083 | if (TREE_CODE (newdecl) == TYPE_DECL |
655dc6ee JM |
3084 | || TREE_CODE (newdecl) == TEMPLATE_DECL |
3085 | || TREE_CODE (newdecl) == CONST_DECL) | |
8d08fdba | 3086 | return; |
68642fb6 | 3087 | |
963d5758 MM |
3088 | /* Don't get confused by static member functions; that's a different |
3089 | use of `static'. */ | |
3090 | if (TREE_CODE (newdecl) == FUNCTION_DECL | |
3091 | && DECL_STATIC_FUNCTION_P (newdecl)) | |
3092 | return; | |
8d08fdba | 3093 | |
24f30ed4 MM |
3094 | /* If the old declaration was `static', or the new one isn't, then |
3095 | then everything is OK. */ | |
3096 | if (DECL_THIS_STATIC (olddecl) || !DECL_THIS_STATIC (newdecl)) | |
3097 | return; | |
3098 | ||
3099 | /* It's OK to declare a builtin function as `static'. */ | |
3100 | if (TREE_CODE (olddecl) == FUNCTION_DECL | |
3101 | && DECL_ARTIFICIAL (olddecl)) | |
3102 | return; | |
3103 | ||
8d08fdba | 3104 | name = DECL_ASSEMBLER_NAME (newdecl); |
24f30ed4 MM |
3105 | cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name) |
3106 | ? implicit_extern_static_warning | |
3107 | : explicit_extern_static_warning, newdecl); | |
3108 | cp_pedwarn_at ("previous declaration of `%D'", olddecl); | |
8d08fdba MS |
3109 | } |
3110 | ||
3111 | /* Handle when a new declaration NEWDECL has the same name as an old | |
3112 | one OLDDECL in the same binding contour. Prints an error message | |
3113 | if appropriate. | |
3114 | ||
3115 | If safely possible, alter OLDDECL to look like NEWDECL, and return 1. | |
3116 | Otherwise, return 0. */ | |
3117 | ||
51c184be | 3118 | int |
8d08fdba | 3119 | duplicate_decls (newdecl, olddecl) |
824b9a4c | 3120 | tree newdecl, olddecl; |
8d08fdba | 3121 | { |
8d08fdba MS |
3122 | unsigned olddecl_uid = DECL_UID (olddecl); |
3123 | int olddecl_friend = 0, types_match = 0; | |
0b60dfe3 | 3124 | int new_defines_function = 0; |
5566b478 MS |
3125 | |
3126 | if (newdecl == olddecl) | |
3127 | return 1; | |
8d08fdba | 3128 | |
8926095f | 3129 | types_match = decls_match (newdecl, olddecl); |
8d08fdba | 3130 | |
8d08fdba MS |
3131 | /* If either the type of the new decl or the type of the old decl is an |
3132 | error_mark_node, then that implies that we have already issued an | |
3133 | error (earlier) for some bogus type specification, and in that case, | |
3134 | it is rather pointless to harass the user with yet more error message | |
0b60dfe3 | 3135 | about the same declaration, so just pretend the types match here. */ |
bd6dd845 MS |
3136 | if (TREE_TYPE (newdecl) == error_mark_node |
3137 | || TREE_TYPE (olddecl) == error_mark_node) | |
8d08fdba | 3138 | types_match = 1; |
68642fb6 | 3139 | |
0b60dfe3 | 3140 | /* Check for redeclaration and other discrepancies. */ |
d22c8596 | 3141 | if (TREE_CODE (olddecl) == FUNCTION_DECL |
9f33663b JM |
3142 | && DECL_ARTIFICIAL (olddecl)) |
3143 | { | |
3144 | if (TREE_CODE (newdecl) != FUNCTION_DECL) | |
3145 | { | |
3146 | /* If you declare a built-in or predefined function name as static, | |
3147 | the old definition is overridden, but optionally warn this was a | |
3148 | bad choice of name. */ | |
3149 | if (! TREE_PUBLIC (newdecl)) | |
3150 | { | |
3151 | if (warn_shadow) | |
3152 | cp_warning ("shadowing %s function `%#D'", | |
3153 | DECL_BUILT_IN (olddecl) ? "built-in" : "library", | |
3154 | olddecl); | |
3155 | /* Discard the old built-in function. */ | |
3156 | return 0; | |
3157 | } | |
3158 | /* If the built-in is not ansi, then programs can override | |
3159 | it even globally without an error. */ | |
3160 | else if (! DECL_BUILT_IN (olddecl)) | |
3161 | cp_warning ("library function `%#D' redeclared as non-function `%#D'", | |
3162 | olddecl, newdecl); | |
3163 | else | |
3164 | { | |
3165 | cp_error ("declaration of `%#D'", newdecl); | |
3166 | cp_error ("conflicts with built-in declaration `%#D'", | |
a4443a08 | 3167 | olddecl); |
9f33663b | 3168 | } |
a4443a08 MS |
3169 | return 0; |
3170 | } | |
9f33663b | 3171 | else if (!types_match) |
8d08fdba | 3172 | { |
eb68cb58 MM |
3173 | if ((DECL_EXTERN_C_P (newdecl) |
3174 | && DECL_EXTERN_C_P (olddecl)) | |
9f33663b JM |
3175 | || compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)), |
3176 | TYPE_ARG_TYPES (TREE_TYPE (olddecl)))) | |
a4443a08 | 3177 | { |
9f33663b JM |
3178 | /* A near match; override the builtin. */ |
3179 | ||
3180 | if (TREE_PUBLIC (newdecl)) | |
a4443a08 | 3181 | { |
9f33663b JM |
3182 | cp_warning ("new declaration `%#D'", newdecl); |
3183 | cp_warning ("ambiguates built-in declaration `%#D'", | |
3184 | olddecl); | |
a4443a08 | 3185 | } |
9f33663b JM |
3186 | else if (warn_shadow) |
3187 | cp_warning ("shadowing %s function `%#D'", | |
3188 | DECL_BUILT_IN (olddecl) ? "built-in" : "library", | |
3189 | olddecl); | |
a4443a08 | 3190 | } |
9f33663b JM |
3191 | else |
3192 | /* Discard the old built-in function. */ | |
3193 | return 0; | |
8d08fdba | 3194 | } |
68642fb6 | 3195 | |
24f30ed4 MM |
3196 | if (DECL_THIS_STATIC (newdecl) && !DECL_THIS_STATIC (olddecl)) |
3197 | { | |
3198 | /* If a builtin function is redeclared as `static', merge | |
3199 | the declarations, but make the original one static. */ | |
3200 | DECL_THIS_STATIC (olddecl) = 1; | |
3201 | TREE_PUBLIC (olddecl) = 0; | |
9bfadf57 | 3202 | |
421844e7 MM |
3203 | /* Make the old declaration consistent with the new one so |
3204 | that all remnants of the builtin-ness of this function | |
3205 | will be banished. */ | |
5d2ed28c | 3206 | SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl)); |
19e7881c | 3207 | SET_DECL_RTL (olddecl, DECL_RTL (newdecl)); |
92643fea | 3208 | COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl); |
9bfadf57 MM |
3209 | SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (newdecl), |
3210 | newdecl); | |
24f30ed4 | 3211 | } |
39211cd5 MS |
3212 | } |
3213 | else if (TREE_CODE (olddecl) != TREE_CODE (newdecl)) | |
3214 | { | |
9ed182dc JM |
3215 | if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl) |
3216 | && TREE_CODE (newdecl) != TYPE_DECL | |
3217 | && ! (TREE_CODE (newdecl) == TEMPLATE_DECL | |
3218 | && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)) | |
3219 | || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl) | |
3220 | && TREE_CODE (olddecl) != TYPE_DECL | |
3221 | && ! (TREE_CODE (olddecl) == TEMPLATE_DECL | |
3222 | && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) | |
3223 | == TYPE_DECL)))) | |
3224 | { | |
3225 | /* We do nothing special here, because C++ does such nasty | |
3226 | things with TYPE_DECLs. Instead, just let the TYPE_DECL | |
3227 | get shadowed, and know that if we need to find a TYPE_DECL | |
3228 | for a given name, we can look in the IDENTIFIER_TYPE_VALUE | |
3229 | slot of the identifier. */ | |
3230 | return 0; | |
3231 | } | |
3232 | ||
39211cd5 | 3233 | if ((TREE_CODE (newdecl) == FUNCTION_DECL |
5566b478 | 3234 | && DECL_FUNCTION_TEMPLATE_P (olddecl)) |
39211cd5 | 3235 | || (TREE_CODE (olddecl) == FUNCTION_DECL |
5566b478 | 3236 | && DECL_FUNCTION_TEMPLATE_P (newdecl))) |
39211cd5 | 3237 | return 0; |
9ed182dc | 3238 | |
8251199e | 3239 | cp_error ("`%#D' redeclared as different kind of symbol", newdecl); |
39211cd5 MS |
3240 | if (TREE_CODE (olddecl) == TREE_LIST) |
3241 | olddecl = TREE_VALUE (olddecl); | |
8251199e | 3242 | cp_error_at ("previous declaration of `%#D'", olddecl); |
39211cd5 MS |
3243 | |
3244 | /* New decl is completely inconsistent with the old one => | |
3245 | tell caller to replace the old one. */ | |
3246 | ||
3247 | return 0; | |
8d08fdba | 3248 | } |
8d08fdba MS |
3249 | else if (!types_match) |
3250 | { | |
4f1c5b7d | 3251 | if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl)) |
7bdbfa05 MM |
3252 | /* These are certainly not duplicate declarations; they're |
3253 | from different scopes. */ | |
3254 | return 0; | |
3255 | ||
8926095f | 3256 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
f0e01782 MS |
3257 | { |
3258 | /* The name of a class template may not be declared to refer to | |
3259 | any other template, class, function, object, namespace, value, | |
e92cc029 | 3260 | or type in the same scope. */ |
5566b478 MS |
3261 | if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL |
3262 | || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) | |
f0e01782 | 3263 | { |
8251199e JM |
3264 | cp_error ("declaration of template `%#D'", newdecl); |
3265 | cp_error_at ("conflicts with previous declaration `%#D'", | |
f0e01782 MS |
3266 | olddecl); |
3267 | } | |
ec255269 MS |
3268 | else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL |
3269 | && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL | |
3270 | && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))), | |
91063b51 | 3271 | TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl)))) |
75650646 MM |
3272 | && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl), |
3273 | DECL_TEMPLATE_PARMS (olddecl))) | |
ec255269 | 3274 | { |
8251199e JM |
3275 | cp_error ("new declaration `%#D'", newdecl); |
3276 | cp_error_at ("ambiguates old declaration `%#D'", olddecl); | |
ec255269 | 3277 | } |
f0e01782 MS |
3278 | return 0; |
3279 | } | |
8926095f MS |
3280 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3281 | { | |
eb68cb58 | 3282 | if (DECL_EXTERN_C_P (newdecl) && DECL_EXTERN_C_P (olddecl)) |
8926095f | 3283 | { |
8251199e | 3284 | cp_error ("declaration of C function `%#D' conflicts with", |
8926095f | 3285 | newdecl); |
8251199e | 3286 | cp_error_at ("previous declaration `%#D' here", olddecl); |
8926095f | 3287 | } |
00595019 | 3288 | else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)), |
91063b51 | 3289 | TYPE_ARG_TYPES (TREE_TYPE (olddecl)))) |
700f8a87 | 3290 | { |
8251199e JM |
3291 | cp_error ("new declaration `%#D'", newdecl); |
3292 | cp_error_at ("ambiguates old declaration `%#D'", olddecl); | |
700f8a87 MS |
3293 | } |
3294 | else | |
3295 | return 0; | |
8926095f | 3296 | } |
8d08fdba MS |
3297 | |
3298 | /* Already complained about this, so don't do so again. */ | |
a4443a08 | 3299 | else if (current_class_type == NULL_TREE |
8d08fdba MS |
3300 | || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type) |
3301 | { | |
8251199e JM |
3302 | cp_error ("conflicting types for `%#D'", newdecl); |
3303 | cp_error_at ("previous declaration as `%#D'", olddecl); | |
8d08fdba MS |
3304 | } |
3305 | } | |
68642fb6 | 3306 | else if (TREE_CODE (newdecl) == FUNCTION_DECL |
75650646 MM |
3307 | && ((DECL_TEMPLATE_SPECIALIZATION (olddecl) |
3308 | && (!DECL_TEMPLATE_INFO (newdecl) | |
68642fb6 | 3309 | || (DECL_TI_TEMPLATE (newdecl) |
75650646 MM |
3310 | != DECL_TI_TEMPLATE (olddecl)))) |
3311 | || (DECL_TEMPLATE_SPECIALIZATION (newdecl) | |
3312 | && (!DECL_TEMPLATE_INFO (olddecl) | |
68642fb6 | 3313 | || (DECL_TI_TEMPLATE (olddecl) |
75650646 | 3314 | != DECL_TI_TEMPLATE (newdecl)))))) |
386b8a85 JM |
3315 | /* It's OK to have a template specialization and a non-template |
3316 | with the same type, or to have specializations of two | |
75650646 MM |
3317 | different templates with the same type. Note that if one is a |
3318 | specialization, and the other is an instantiation of the same | |
3319 | template, that we do not exit at this point. That situation | |
3320 | can occur if we instantiate a template class, and then | |
3321 | specialize one of its methods. This situation is legal, but | |
3322 | the declarations must be merged in the usual way. */ | |
3323 | return 0; | |
68642fb6 UD |
3324 | else if (TREE_CODE (newdecl) == FUNCTION_DECL |
3325 | && ((DECL_TEMPLATE_INSTANTIATION (olddecl) | |
75650646 MM |
3326 | && !DECL_USE_TEMPLATE (newdecl)) |
3327 | || (DECL_TEMPLATE_INSTANTIATION (newdecl) | |
3328 | && !DECL_USE_TEMPLATE (olddecl)))) | |
3329 | /* One of the declarations is a template instantiation, and the | |
3330 | other is not a template at all. That's OK. */ | |
386b8a85 | 3331 | return 0; |
85c6cbaf ML |
3332 | else if (TREE_CODE (newdecl) == NAMESPACE_DECL |
3333 | && DECL_NAMESPACE_ALIAS (newdecl) | |
3334 | && DECL_NAMESPACE_ALIAS (newdecl) == DECL_NAMESPACE_ALIAS (olddecl)) | |
3335 | /* Redeclaration of namespace alias, ignore it. */ | |
3336 | return 1; | |
8d08fdba MS |
3337 | else |
3338 | { | |
d8e178a0 | 3339 | const char *errmsg = redeclaration_error_message (newdecl, olddecl); |
8251199e | 3340 | if (errmsg) |
8d08fdba | 3341 | { |
8251199e | 3342 | cp_error (errmsg, newdecl); |
8d08fdba MS |
3343 | if (DECL_NAME (olddecl) != NULL_TREE) |
3344 | cp_error_at ((DECL_INITIAL (olddecl) | |
2c73f9f5 | 3345 | && namespace_bindings_p ()) |
8251199e JM |
3346 | ? "`%#D' previously defined here" |
3347 | : "`%#D' previously declared here", olddecl); | |
8d08fdba MS |
3348 | } |
3349 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
3350 | && DECL_INITIAL (olddecl) != NULL_TREE | |
3351 | && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE | |
3352 | && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE) | |
3353 | { | |
3354 | /* Prototype decl follows defn w/o prototype. */ | |
8251199e JM |
3355 | cp_warning_at ("prototype for `%#D'", newdecl); |
3356 | cp_warning_at ("follows non-prototype definition here", olddecl); | |
8d08fdba MS |
3357 | } |
3358 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
3359 | && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)) | |
8926095f MS |
3360 | { |
3361 | /* extern "C" int foo (); | |
3362 | int foo () { bar (); } | |
3363 | is OK. */ | |
46ccf50a | 3364 | if (current_lang_depth () == 0) |
5d2ed28c | 3365 | SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl)); |
8926095f MS |
3366 | else |
3367 | { | |
8251199e | 3368 | cp_error_at ("previous declaration of `%#D' with %L linkage", |
8926095f | 3369 | olddecl, DECL_LANGUAGE (olddecl)); |
8251199e | 3370 | cp_error ("conflicts with new declaration with %L linkage", |
8926095f MS |
3371 | DECL_LANGUAGE (newdecl)); |
3372 | } | |
3373 | } | |
e1cd6e56 | 3374 | |
a6f02587 | 3375 | if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl)) |
c32381b1 JM |
3376 | ; |
3377 | else if (TREE_CODE (olddecl) == FUNCTION_DECL) | |
e1cd6e56 MS |
3378 | { |
3379 | tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl)); | |
3380 | tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)); | |
3381 | int i = 1; | |
3382 | ||
3383 | if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE) | |
3384 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2); | |
68642fb6 | 3385 | |
e1cd6e56 MS |
3386 | for (; t1 && t1 != void_list_node; |
3387 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++) | |
3388 | if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2)) | |
3389 | { | |
2507f3b5 RK |
3390 | if (1 == simple_cst_equal (TREE_PURPOSE (t1), |
3391 | TREE_PURPOSE (t2))) | |
e1cd6e56 MS |
3392 | { |
3393 | if (pedantic) | |
3394 | { | |
8251199e | 3395 | cp_pedwarn ("default argument given for parameter %d of `%#D'", |
e1cd6e56 | 3396 | i, newdecl); |
8251199e | 3397 | cp_pedwarn_at ("after previous specification in `%#D'", |
e1cd6e56 MS |
3398 | olddecl); |
3399 | } | |
3400 | } | |
3401 | else | |
3402 | { | |
8251199e | 3403 | cp_error ("default argument given for parameter %d of `%#D'", |
e1cd6e56 | 3404 | i, newdecl); |
8251199e | 3405 | cp_error_at ("after previous specification in `%#D'", |
e1cd6e56 MS |
3406 | olddecl); |
3407 | } | |
3408 | } | |
a5894242 | 3409 | |
79065db2 MM |
3410 | if (DECL_DECLARED_INLINE_P (newdecl) |
3411 | && ! DECL_DECLARED_INLINE_P (olddecl) | |
7fcdf4c2 | 3412 | && TREE_ADDRESSABLE (olddecl) && warn_inline) |
dff6b454 | 3413 | { |
8251199e | 3414 | cp_warning ("`%#D' was used before it was declared inline", |
7fcdf4c2 | 3415 | newdecl); |
8251199e | 3416 | cp_warning_at ("previous non-inline declaration here", |
7fcdf4c2 | 3417 | olddecl); |
dff6b454 | 3418 | } |
e1cd6e56 | 3419 | } |
8d08fdba MS |
3420 | } |
3421 | ||
3422 | /* If new decl is `static' and an `extern' was seen previously, | |
3423 | warn about it. */ | |
3424 | warn_extern_redeclared_static (newdecl, olddecl); | |
3425 | ||
e92cc029 | 3426 | /* We have committed to returning 1 at this point. */ |
8d08fdba MS |
3427 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3428 | { | |
3429 | /* Now that functions must hold information normally held | |
3430 | by field decls, there is extra work to do so that | |
3431 | declaration information does not get destroyed during | |
3432 | definition. */ | |
3433 | if (DECL_VINDEX (olddecl)) | |
3434 | DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl); | |
4f1c5b7d MM |
3435 | if (DECL_VIRTUAL_CONTEXT (olddecl)) |
3436 | DECL_VIRTUAL_CONTEXT (newdecl) = DECL_VIRTUAL_CONTEXT (olddecl); | |
8d08fdba MS |
3437 | if (DECL_CONTEXT (olddecl)) |
3438 | DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl); | |
0e5921e8 | 3439 | if (DECL_PENDING_INLINE_INFO (newdecl) == 0) |
8d08fdba | 3440 | DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl); |
e1cd6e56 MS |
3441 | DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl); |
3442 | DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl); | |
fee7654e | 3443 | DECL_PURE_VIRTUAL_P (newdecl) |= DECL_PURE_VIRTUAL_P (olddecl); |
864b83b9 | 3444 | DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl); |
4a67c9e9 | 3445 | DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl); |
963d5758 | 3446 | DECL_THIS_STATIC (newdecl) |= DECL_THIS_STATIC (olddecl); |
e0fff4b3 JM |
3447 | if (DECL_OVERLOADED_OPERATOR_P (olddecl) != ERROR_MARK) |
3448 | SET_OVERLOADED_OPERATOR_CODE | |
3449 | (newdecl, DECL_OVERLOADED_OPERATOR_P (olddecl)); | |
0b60dfe3 | 3450 | new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE; |
68642fb6 | 3451 | |
0b60dfe3 BK |
3452 | /* Optionally warn about more than one declaration for the same |
3453 | name, but don't warn about a function declaration followed by a | |
3454 | definition. */ | |
3455 | if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl) | |
3456 | && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE) | |
3457 | /* Don't warn about extern decl followed by definition. */ | |
3458 | && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl)) | |
3459 | /* Don't warn about friends, let add_friend take care of it. */ | |
3460 | && ! DECL_FRIEND_P (newdecl)) | |
3461 | { | |
8251199e JM |
3462 | cp_warning ("redundant redeclaration of `%D' in same scope", newdecl); |
3463 | cp_warning_at ("previous declaration of `%D'", olddecl); | |
0b60dfe3 | 3464 | } |
8d08fdba MS |
3465 | } |
3466 | ||
3467 | /* Deal with C++: must preserve virtual function table size. */ | |
3468 | if (TREE_CODE (olddecl) == TYPE_DECL) | |
3469 | { | |
3470 | register tree newtype = TREE_TYPE (newdecl); | |
3471 | register tree oldtype = TREE_TYPE (olddecl); | |
3472 | ||
3473 | if (newtype != error_mark_node && oldtype != error_mark_node | |
3474 | && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype)) | |
3475 | { | |
3476 | CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype); | |
3477 | CLASSTYPE_FRIEND_CLASSES (newtype) | |
3478 | = CLASSTYPE_FRIEND_CLASSES (oldtype); | |
3479 | } | |
970d6386 MM |
3480 | |
3481 | DECL_ORIGINAL_TYPE (newdecl) = DECL_ORIGINAL_TYPE (olddecl); | |
8d08fdba MS |
3482 | } |
3483 | ||
8d08fdba MS |
3484 | /* Copy all the DECL_... slots specified in the new decl |
3485 | except for any that we copy here from the old type. */ | |
68642fb6 | 3486 | DECL_MACHINE_ATTRIBUTES (newdecl) |
0b60dfe3 | 3487 | = merge_machine_decl_attributes (olddecl, newdecl); |
8d08fdba | 3488 | |
5566b478 MS |
3489 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
3490 | { | |
4d85e00e | 3491 | TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl)); |
68642fb6 | 3492 | DECL_TEMPLATE_SPECIALIZATIONS (olddecl) |
4d85e00e MM |
3493 | = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl), |
3494 | DECL_TEMPLATE_SPECIALIZATIONS (newdecl)); | |
68642fb6 | 3495 | |
5566b478 MS |
3496 | return 1; |
3497 | } | |
68642fb6 | 3498 | |
8d08fdba MS |
3499 | if (types_match) |
3500 | { | |
3501 | /* Automatically handles default parameters. */ | |
3502 | tree oldtype = TREE_TYPE (olddecl); | |
e1cd6e56 | 3503 | tree newtype; |
8d08fdba | 3504 | |
e1cd6e56 MS |
3505 | /* Merge the data types specified in the two decls. */ |
3506 | newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl)); | |
3507 | ||
9076e292 JM |
3508 | /* If common_type produces a non-typedef type, just use the old type. */ |
3509 | if (TREE_CODE (newdecl) == TYPE_DECL | |
3510 | && newtype == DECL_ORIGINAL_TYPE (newdecl)) | |
3511 | newtype = oldtype; | |
3512 | ||
8d08fdba MS |
3513 | if (TREE_CODE (newdecl) == VAR_DECL) |
3514 | DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl); | |
3515 | /* Do this after calling `common_type' so that default | |
3516 | parameters don't confuse us. */ | |
3517 | else if (TREE_CODE (newdecl) == FUNCTION_DECL | |
3518 | && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)) | |
3519 | != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)))) | |
3520 | { | |
f30432d7 | 3521 | TREE_TYPE (newdecl) = build_exception_variant (newtype, |
8d08fdba | 3522 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))); |
f30432d7 | 3523 | TREE_TYPE (olddecl) = build_exception_variant (newtype, |
8d08fdba MS |
3524 | TYPE_RAISES_EXCEPTIONS (oldtype)); |
3525 | ||
9a224b4a JM |
3526 | if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl)) |
3527 | && DECL_SOURCE_LINE (olddecl) != 0 | |
da20811c | 3528 | && flag_exceptions |
4cc1d462 NS |
3529 | && !comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)), |
3530 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)), 1)) | |
8d08fdba | 3531 | { |
4cc1d462 | 3532 | cp_error ("declaration of `%F' throws different exceptions", |
a28e3c7f | 3533 | newdecl); |
a09ba2e0 | 3534 | cp_error_at ("than previous declaration `%F'", olddecl); |
8d08fdba MS |
3535 | } |
3536 | } | |
3537 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype; | |
3538 | ||
3539 | /* Lay the type out, unless already done. */ | |
407f03b8 | 3540 | if (! same_type_p (newtype, oldtype) |
5566b478 | 3541 | && TREE_TYPE (newdecl) != error_mark_node |
5156628f | 3542 | && !(processing_template_decl && uses_template_parms (newdecl))) |
b7484fbe MS |
3543 | layout_type (TREE_TYPE (newdecl)); |
3544 | ||
5566b478 MS |
3545 | if ((TREE_CODE (newdecl) == VAR_DECL |
3546 | || TREE_CODE (newdecl) == PARM_DECL | |
3547 | || TREE_CODE (newdecl) == RESULT_DECL | |
3548 | || TREE_CODE (newdecl) == FIELD_DECL | |
3549 | || TREE_CODE (newdecl) == TYPE_DECL) | |
5156628f | 3550 | && !(processing_template_decl && uses_template_parms (newdecl))) |
b7484fbe | 3551 | layout_decl (newdecl, 0); |
8d08fdba MS |
3552 | |
3553 | /* Merge the type qualifiers. */ | |
3554 | if (TREE_READONLY (newdecl)) | |
3555 | TREE_READONLY (olddecl) = 1; | |
3556 | if (TREE_THIS_VOLATILE (newdecl)) | |
3557 | TREE_THIS_VOLATILE (olddecl) = 1; | |
3558 | ||
3559 | /* Merge the initialization information. */ | |
8926095f MS |
3560 | if (DECL_INITIAL (newdecl) == NULL_TREE |
3561 | && DECL_INITIAL (olddecl) != NULL_TREE) | |
3562 | { | |
3563 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
3564 | DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl); | |
3565 | DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl); | |
b0d06515 MM |
3566 | if (CAN_HAVE_FULL_LANG_DECL_P (newdecl) |
3567 | && DECL_LANG_SPECIFIC (newdecl) | |
4d85e00e MM |
3568 | && DECL_LANG_SPECIFIC (olddecl)) |
3569 | DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl); | |
8926095f | 3570 | } |
39211cd5 MS |
3571 | |
3572 | /* Merge the section attribute. | |
3573 | We want to issue an error if the sections conflict but that must be | |
3574 | done later in decl_attributes since we are called before attributes | |
3575 | are assigned. */ | |
3576 | if (DECL_SECTION_NAME (newdecl) == NULL_TREE) | |
3577 | DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl); | |
3578 | ||
5d73aa63 | 3579 | /* Keep the old rtl since we can safely use it. */ |
19e7881c | 3580 | COPY_DECL_RTL (olddecl, newdecl); |
a157febd GK |
3581 | |
3582 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
3583 | { | |
3584 | DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl) | |
3585 | |= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl); | |
3586 | DECL_NO_CHECK_MEMORY_USAGE (newdecl) | |
3587 | |= DECL_NO_CHECK_MEMORY_USAGE (olddecl); | |
3588 | DECL_NO_LIMIT_STACK (newdecl) | |
3589 | |= DECL_NO_LIMIT_STACK (olddecl); | |
3590 | } | |
8d08fdba MS |
3591 | } |
3592 | /* If cannot merge, then use the new type and qualifiers, | |
3593 | and don't preserve the old rtl. */ | |
3594 | else | |
3595 | { | |
3596 | /* Clean out any memory we had of the old declaration. */ | |
3597 | tree oldstatic = value_member (olddecl, static_aggregates); | |
3598 | if (oldstatic) | |
3599 | TREE_VALUE (oldstatic) = error_mark_node; | |
3600 | ||
3601 | TREE_TYPE (olddecl) = TREE_TYPE (newdecl); | |
3602 | TREE_READONLY (olddecl) = TREE_READONLY (newdecl); | |
3603 | TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl); | |
3604 | TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl); | |
3605 | } | |
3606 | ||
3607 | /* Merge the storage class information. */ | |
a9aedbc2 | 3608 | DECL_WEAK (newdecl) |= DECL_WEAK (olddecl); |
e92cc029 | 3609 | DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl); |
794d4a61 | 3610 | DECL_DEFER_OUTPUT (newdecl) |= DECL_DEFER_OUTPUT (olddecl); |
a9aedbc2 MS |
3611 | TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl); |
3612 | TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl); | |
3613 | if (! DECL_EXTERNAL (olddecl)) | |
3614 | DECL_EXTERNAL (newdecl) = 0; | |
68642fb6 | 3615 | |
0b60dfe3 | 3616 | if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl)) |
8d08fdba | 3617 | { |
a9aedbc2 MS |
3618 | DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl); |
3619 | DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl); | |
77be6f82 | 3620 | DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl); |
68642fb6 | 3621 | DECL_TEMPLATE_INSTANTIATED (newdecl) |
2b0a63a3 | 3622 | |= DECL_TEMPLATE_INSTANTIATED (olddecl); |
0b60dfe3 BK |
3623 | /* Don't really know how much of the language-specific |
3624 | values we should copy from old to new. */ | |
3625 | DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl); | |
3626 | DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl); | |
3627 | DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl); | |
fbf1c34b | 3628 | DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl); |
3febd123 NS |
3629 | DECL_INITIALIZED_IN_CLASS_P (newdecl) |
3630 | |= DECL_INITIALIZED_IN_CLASS_P (olddecl); | |
0b60dfe3 | 3631 | olddecl_friend = DECL_FRIEND_P (olddecl); |
6a629cac MM |
3632 | |
3633 | /* Only functions have DECL_BEFRIENDING_CLASSES. */ | |
3634 | if (TREE_CODE (newdecl) == FUNCTION_DECL | |
3635 | || DECL_FUNCTION_TEMPLATE_P (newdecl)) | |
3636 | DECL_BEFRIENDING_CLASSES (newdecl) | |
3637 | = chainon (DECL_BEFRIENDING_CLASSES (newdecl), | |
3638 | DECL_BEFRIENDING_CLASSES (olddecl)); | |
8d08fdba MS |
3639 | } |
3640 | ||
8d08fdba MS |
3641 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3642 | { | |
68642fb6 UD |
3643 | if (DECL_TEMPLATE_INSTANTIATION (olddecl) |
3644 | && !DECL_TEMPLATE_INSTANTIATION (newdecl)) | |
75650646 MM |
3645 | { |
3646 | /* If newdecl is not a specialization, then it is not a | |
3647 | template-related function at all. And that means that we | |
3648 | shoud have exited above, returning 0. */ | |
3649 | my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl), | |
3650 | 0); | |
3651 | ||
68642fb6 | 3652 | if (TREE_USED (olddecl)) |
75650646 | 3653 | /* From [temp.expl.spec]: |
68642fb6 | 3654 | |
75650646 MM |
3655 | If a template, a member template or the member of a class |
3656 | template is explicitly specialized then that | |
3657 | specialization shall be declared before the first use of | |
3658 | that specialization that would cause an implicit | |
3659 | instantiation to take place, in every translation unit in | |
3660 | which such a use occurs. */ | |
68642fb6 | 3661 | cp_error ("explicit specialization of %D after first use", |
75650646 MM |
3662 | olddecl); |
3663 | ||
3664 | SET_DECL_TEMPLATE_SPECIALIZATION (olddecl); | |
3665 | } | |
79065db2 | 3666 | DECL_DECLARED_INLINE_P (newdecl) |= DECL_DECLARED_INLINE_P (olddecl); |
faae18ab MS |
3667 | |
3668 | /* If either decl says `inline', this fn is inline, unless its | |
3669 | definition was passed already. */ | |
3670 | if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE) | |
3671 | DECL_INLINE (olddecl) = 1; | |
3672 | DECL_INLINE (newdecl) = DECL_INLINE (olddecl); | |
3673 | ||
5daf7c0a JM |
3674 | /* Preserve abstractness on cloned [cd]tors. */ |
3675 | DECL_ABSTRACT (newdecl) = DECL_ABSTRACT (olddecl); | |
3676 | ||
700f8a87 MS |
3677 | if (! types_match) |
3678 | { | |
5d2ed28c | 3679 | SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl)); |
92643fea | 3680 | COPY_DECL_ASSEMBLER_NAME (newdecl, olddecl); |
19e7881c | 3681 | SET_DECL_RTL (olddecl, DECL_RTL (newdecl)); |
5566b478 MS |
3682 | } |
3683 | if (! types_match || new_defines_function) | |
3684 | { | |
6f1b4c42 JM |
3685 | /* These need to be copied so that the names are available. |
3686 | Note that if the types do match, we'll preserve inline | |
3687 | info and other bits, but if not, we won't. */ | |
700f8a87 MS |
3688 | DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl); |
3689 | DECL_RESULT (olddecl) = DECL_RESULT (newdecl); | |
700f8a87 | 3690 | } |
8d08fdba MS |
3691 | if (new_defines_function) |
3692 | /* If defining a function declared with other language | |
3693 | linkage, use the previously declared language linkage. */ | |
5d2ed28c | 3694 | SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl)); |
6f1b4c42 | 3695 | else if (types_match) |
8d08fdba MS |
3696 | { |
3697 | /* If redeclaring a builtin function, and not a definition, | |
3698 | it stays built in. */ | |
3699 | if (DECL_BUILT_IN (olddecl)) | |
3700 | { | |
26db82d8 | 3701 | DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl); |
39211cd5 | 3702 | DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl); |
8d08fdba MS |
3703 | /* If we're keeping the built-in definition, keep the rtl, |
3704 | regardless of declaration matches. */ | |
19e7881c | 3705 | SET_DECL_RTL (newdecl, DECL_RTL (olddecl)); |
8d08fdba MS |
3706 | } |
3707 | else | |
b850de4f | 3708 | DECL_NUM_STMTS (newdecl) = DECL_NUM_STMTS (olddecl); |
8d08fdba MS |
3709 | |
3710 | DECL_RESULT (newdecl) = DECL_RESULT (olddecl); | |
8926095f | 3711 | if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl))) |
8d08fdba MS |
3712 | /* Previously saved insns go together with |
3713 | the function's previous definition. */ | |
3714 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
3715 | /* Don't clear out the arguments if we're redefining a function. */ | |
3716 | if (DECL_ARGUMENTS (olddecl)) | |
3717 | DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl); | |
3718 | } | |
3719 | } | |
3720 | ||
a9aedbc2 MS |
3721 | if (TREE_CODE (newdecl) == NAMESPACE_DECL) |
3722 | { | |
3723 | NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl); | |
3724 | } | |
3725 | ||
8d08fdba MS |
3726 | /* Now preserve various other info from the definition. */ |
3727 | TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl); | |
3728 | TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl); | |
3729 | DECL_COMMON (newdecl) = DECL_COMMON (olddecl); | |
92643fea | 3730 | COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl); |
8d08fdba | 3731 | |
8d08fdba MS |
3732 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
3733 | { | |
3734 | int function_size; | |
8d08fdba MS |
3735 | |
3736 | function_size = sizeof (struct tree_decl); | |
3737 | ||
730e1556 KG |
3738 | memcpy ((char *) olddecl + sizeof (struct tree_common), |
3739 | (char *) newdecl + sizeof (struct tree_common), | |
3740 | function_size - sizeof (struct tree_common)); | |
8d08fdba | 3741 | |
75650646 MM |
3742 | if (DECL_TEMPLATE_INSTANTIATION (newdecl)) |
3743 | { | |
3744 | /* If newdecl is a template instantiation, it is possible that | |
3745 | the following sequence of events has occurred: | |
3746 | ||
3747 | o A friend function was declared in a class template. The | |
68642fb6 | 3748 | class template was instantiated. |
75650646 | 3749 | |
68642fb6 UD |
3750 | o The instantiation of the friend declaration was |
3751 | recorded on the instantiation list, and is newdecl. | |
75650646 MM |
3752 | |
3753 | o Later, however, instantiate_class_template called pushdecl | |
3754 | on the newdecl to perform name injection. But, pushdecl in | |
3755 | turn called duplicate_decls when it discovered that another | |
3756 | declaration of a global function with the same name already | |
68642fb6 | 3757 | existed. |
75650646 MM |
3758 | |
3759 | o Here, in duplicate_decls, we decided to clobber newdecl. | |
3760 | ||
3761 | If we're going to do that, we'd better make sure that | |
3762 | olddecl, and not newdecl, is on the list of | |
3763 | instantiations so that if we try to do the instantiation | |
3764 | again we won't get the clobbered declaration. */ | |
3765 | ||
68642fb6 UD |
3766 | tree tmpl = DECL_TI_TEMPLATE (newdecl); |
3767 | tree decls = DECL_TEMPLATE_SPECIALIZATIONS (tmpl); | |
75650646 MM |
3768 | |
3769 | for (; decls; decls = TREE_CHAIN (decls)) | |
3770 | if (TREE_VALUE (decls) == newdecl) | |
3771 | TREE_VALUE (decls) = olddecl; | |
3772 | } | |
8d08fdba MS |
3773 | } |
3774 | else | |
3775 | { | |
730e1556 KG |
3776 | memcpy ((char *) olddecl + sizeof (struct tree_common), |
3777 | (char *) newdecl + sizeof (struct tree_common), | |
3778 | sizeof (struct tree_decl) - sizeof (struct tree_common) | |
3779 | + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *)); | |
8d08fdba MS |
3780 | } |
3781 | ||
3782 | DECL_UID (olddecl) = olddecl_uid; | |
3783 | if (olddecl_friend) | |
3784 | DECL_FRIEND_P (olddecl) = 1; | |
3785 | ||
d9525bec BK |
3786 | /* NEWDECL contains the merged attribute lists. |
3787 | Update OLDDECL to be the same. */ | |
3788 | DECL_MACHINE_ATTRIBUTES (olddecl) = DECL_MACHINE_ATTRIBUTES (newdecl); | |
3789 | ||
8d08fdba MS |
3790 | return 1; |
3791 | } | |
3792 | ||
3793 | /* Record a decl-node X as belonging to the current lexical scope. | |
3794 | Check for errors (such as an incompatible declaration for the same | |
3795 | name already seen in the same scope). | |
3796 | ||
3797 | Returns either X or an old decl for the same name. | |
3798 | If an old decl is returned, it may have been smashed | |
3799 | to agree with what X says. */ | |
3800 | ||
3801 | tree | |
3802 | pushdecl (x) | |
3803 | tree x; | |
3804 | { | |
3805 | register tree t; | |
b35d4555 MM |
3806 | register tree name; |
3807 | int need_new_binding; | |
3808 | ||
3809 | /* We shouldn't be calling pushdecl when we're generating RTL for a | |
3810 | function that we already did semantic analysis on previously. */ | |
01d939e8 | 3811 | my_friendly_assert (!cfun || doing_semantic_analysis_p (), |
b35d4555 MM |
3812 | 19990913); |
3813 | ||
b35d4555 | 3814 | need_new_binding = 1; |
8d08fdba | 3815 | |
50714e79 MM |
3816 | if (DECL_TEMPLATE_PARM_P (x)) |
3817 | /* Template parameters have no context; they are not X::T even | |
3818 | when declared within a class or namespace. */ | |
3819 | ; | |
3820 | else | |
3821 | { | |
3822 | if (current_function_decl && x != current_function_decl | |
3823 | /* A local declaration for a function doesn't constitute | |
3824 | nesting. */ | |
f39ee884 MM |
3825 | && !(TREE_CODE (x) == FUNCTION_DECL && !DECL_INITIAL (x)) |
3826 | /* A local declaration for an `extern' variable is in the | |
94dfccd1 | 3827 | scope of the current namespace, not the current |
f39ee884 MM |
3828 | function. */ |
3829 | && !(TREE_CODE (x) == VAR_DECL && DECL_EXTERNAL (x)) | |
50714e79 MM |
3830 | && !DECL_CONTEXT (x)) |
3831 | DECL_CONTEXT (x) = current_function_decl; | |
cd9f6678 MM |
3832 | |
3833 | /* If this is the declaration for a namespace-scope function, | |
3834 | but the declaration itself is in a local scope, mark the | |
3835 | declaration. */ | |
68642fb6 | 3836 | if (TREE_CODE (x) == FUNCTION_DECL |
cd9f6678 MM |
3837 | && DECL_NAMESPACE_SCOPE_P (x) |
3838 | && current_function_decl | |
3839 | && x != current_function_decl) | |
3840 | DECL_LOCAL_FUNCTION_P (x) = 1; | |
50714e79 | 3841 | } |
8d08fdba | 3842 | |
fe8fadc1 | 3843 | name = DECL_NAME (x); |
8d08fdba MS |
3844 | if (name) |
3845 | { | |
94dfccd1 JM |
3846 | int different_binding_level = 0; |
3847 | ||
386b8a85 JM |
3848 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) |
3849 | name = TREE_OPERAND (name, 0); | |
68642fb6 | 3850 | |
94dfccd1 JM |
3851 | /* In case this decl was explicitly namespace-qualified, look it |
3852 | up in its namespace context. */ | |
3853 | if (TREE_CODE (x) == VAR_DECL && DECL_NAMESPACE_SCOPE_P (x) | |
3854 | && namespace_bindings_p ()) | |
2c73f9f5 ML |
3855 | t = namespace_binding (name, DECL_CONTEXT (x)); |
3856 | else | |
3857 | t = lookup_name_current_level (name); | |
fe8fadc1 | 3858 | |
94dfccd1 JM |
3859 | /* [basic.link] If there is a visible declaration of an entity |
3860 | with linkage having the same name and type, ignoring entities | |
3861 | declared outside the innermost enclosing namespace scope, the | |
3862 | block scope declaration declares that same entity and | |
3863 | receives the linkage of the previous declaration. */ | |
3864 | if (! t && current_function_decl && x != current_function_decl | |
3865 | && (TREE_CODE (x) == FUNCTION_DECL || TREE_CODE (x) == VAR_DECL) | |
3866 | && DECL_EXTERNAL (x)) | |
3867 | { | |
3868 | /* Look in block scope. */ | |
3869 | t = IDENTIFIER_VALUE (name); | |
3870 | /* Or in the innermost namespace. */ | |
3871 | if (! t) | |
3872 | t = namespace_binding (name, DECL_CONTEXT (x)); | |
fab09a24 JM |
3873 | /* Does it have linkage? Note that if this isn't a DECL, it's an |
3874 | OVERLOAD, which is OK. */ | |
3875 | if (t && DECL_P (t) && ! (TREE_STATIC (t) || DECL_EXTERNAL (t))) | |
94dfccd1 JM |
3876 | t = NULL_TREE; |
3877 | if (t) | |
3878 | different_binding_level = 1; | |
3879 | } | |
3880 | ||
fe8fadc1 MM |
3881 | /* If we are declaring a function, and the result of name-lookup |
3882 | was an OVERLOAD, look for an overloaded instance that is | |
3883 | actually the same as the function we are declaring. (If | |
3884 | there is one, we have to merge our declaration with the | |
3885 | previous declaration.) */ | |
655dc6ee | 3886 | if (t && TREE_CODE (t) == OVERLOAD) |
fe8fadc1 MM |
3887 | { |
3888 | tree match; | |
3889 | ||
655dc6ee JM |
3890 | if (TREE_CODE (x) == FUNCTION_DECL) |
3891 | for (match = t; match; match = OVL_NEXT (match)) | |
3892 | { | |
92643fea | 3893 | if (decls_match (OVL_CURRENT (match), x)) |
655dc6ee JM |
3894 | break; |
3895 | } | |
3896 | else | |
3897 | /* Just choose one. */ | |
3898 | match = t; | |
fe8fadc1 MM |
3899 | |
3900 | if (match) | |
3901 | t = OVL_CURRENT (match); | |
3902 | else | |
3903 | t = NULL_TREE; | |
3904 | } | |
3905 | ||
8d08fdba MS |
3906 | if (t == error_mark_node) |
3907 | { | |
3908 | /* error_mark_node is 0 for a while during initialization! */ | |
3909 | t = NULL_TREE; | |
8251199e | 3910 | cp_error_at ("`%#D' used prior to declaration", x); |
8d08fdba | 3911 | } |
51c184be | 3912 | else if (t != NULL_TREE) |
8d08fdba | 3913 | { |
94dfccd1 JM |
3914 | if (different_binding_level) |
3915 | { | |
3916 | if (decls_match (x, t)) | |
3917 | /* The standard only says that the local extern | |
3918 | inherits linkage from the previous decl; in | |
3919 | particular, default args are not shared. It would | |
3920 | be nice to propagate inlining info, though. FIXME. */ | |
3921 | TREE_PUBLIC (x) = TREE_PUBLIC (t); | |
3922 | } | |
3923 | else if (TREE_CODE (t) == PARM_DECL) | |
8d08fdba MS |
3924 | { |
3925 | if (DECL_CONTEXT (t) == NULL_TREE) | |
400500c4 RK |
3926 | /* This is probaby caused by too many errors, but calling |
3927 | abort will say that if errors have occurred. */ | |
3928 | abort (); | |
be99da77 | 3929 | |
e92cc029 | 3930 | /* Check for duplicate params. */ |
be99da77 MS |
3931 | if (duplicate_decls (x, t)) |
3932 | return t; | |
8d08fdba | 3933 | } |
eb68cb58 | 3934 | else if ((DECL_EXTERN_C_FUNCTION_P (x) |
5566b478 MS |
3935 | || DECL_FUNCTION_TEMPLATE_P (x)) |
3936 | && is_overloaded_fn (t)) | |
2c73f9f5 | 3937 | /* Don't do anything just yet. */; |
e1cd6e56 MS |
3938 | else if (t == wchar_decl_node) |
3939 | { | |
3940 | if (pedantic && ! DECL_IN_SYSTEM_HEADER (x)) | |
8251199e | 3941 | cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x)); |
e1cd6e56 MS |
3942 | |
3943 | /* Throw away the redeclaration. */ | |
3944 | return t; | |
3945 | } | |
8926095f | 3946 | else if (TREE_CODE (t) != TREE_CODE (x)) |
8d08fdba | 3947 | { |
9ed182dc | 3948 | if (duplicate_decls (x, t)) |
51c184be | 3949 | return t; |
8d08fdba MS |
3950 | } |
3951 | else if (duplicate_decls (x, t)) | |
51c184be | 3952 | { |
7177d104 MS |
3953 | if (TREE_CODE (t) == TYPE_DECL) |
3954 | SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t)); | |
f30432d7 MS |
3955 | else if (TREE_CODE (t) == FUNCTION_DECL) |
3956 | check_default_args (t); | |
7177d104 | 3957 | |
51c184be MS |
3958 | return t; |
3959 | } | |
35680744 MM |
3960 | else if (DECL_MAIN_P (x)) |
3961 | { | |
3962 | /* A redeclaration of main, but not a duplicate of the | |
68642fb6 | 3963 | previous one. |
35680744 MM |
3964 | |
3965 | [basic.start.main] | |
3966 | ||
3967 | This function shall not be overloaded. */ | |
8251199e JM |
3968 | cp_error_at ("invalid redeclaration of `%D'", t); |
3969 | cp_error ("as `%D'", x); | |
35680744 MM |
3970 | /* We don't try to push this declaration since that |
3971 | causes a crash. */ | |
3972 | return x; | |
3973 | } | |
8d08fdba | 3974 | } |
8926095f | 3975 | |
f3400fe2 JM |
3976 | check_template_shadow (x); |
3977 | ||
fcfcdfc8 JM |
3978 | /* If this is a function conjured up by the backend, massage it |
3979 | so it looks friendly. */ | |
eb68cb58 | 3980 | if (DECL_NON_THUNK_FUNCTION_P (x) && ! DECL_LANG_SPECIFIC (x)) |
fcfcdfc8 JM |
3981 | { |
3982 | retrofit_lang_decl (x); | |
5d2ed28c | 3983 | SET_DECL_LANGUAGE (x, lang_c); |
fcfcdfc8 JM |
3984 | } |
3985 | ||
eb68cb58 | 3986 | if (DECL_NON_THUNK_FUNCTION_P (x) && ! DECL_FUNCTION_MEMBER_P (x)) |
8926095f | 3987 | { |
7bdbfa05 | 3988 | t = push_overloaded_decl (x, PUSH_LOCAL); |
5fdaba89 | 3989 | if (t != x) |
8926095f | 3990 | return t; |
f181d4ae MM |
3991 | if (!namespace_bindings_p ()) |
3992 | /* We do not need to create a binding for this name; | |
3993 | push_overloaded_decl will have already done so if | |
3994 | necessary. */ | |
3995 | need_new_binding = 0; | |
8926095f | 3996 | } |
6eb3bb27 | 3997 | else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_NAMESPACE_SCOPE_P (x)) |
cfe507be MM |
3998 | { |
3999 | t = push_overloaded_decl (x, PUSH_GLOBAL); | |
4000 | if (t == x) | |
4001 | add_decl_to_level (x, NAMESPACE_LEVEL (CP_DECL_CONTEXT (t))); | |
4002 | return t; | |
4003 | } | |
8d08fdba | 4004 | |
a1774733 BK |
4005 | /* If declaring a type as a typedef, copy the type (unless we're |
4006 | at line 0), and install this TYPE_DECL as the new type's typedef | |
4007 | name. See the extensive comment in ../c-decl.c (pushdecl). */ | |
8d08fdba MS |
4008 | if (TREE_CODE (x) == TYPE_DECL) |
4009 | { | |
4010 | tree type = TREE_TYPE (x); | |
655dc6ee | 4011 | if (DECL_SOURCE_LINE (x) == 0) |
a1774733 BK |
4012 | { |
4013 | if (TYPE_NAME (type) == 0) | |
4014 | TYPE_NAME (type) = x; | |
4015 | } | |
1c80fb65 MM |
4016 | else if (type != error_mark_node && TYPE_NAME (type) != x |
4017 | /* We don't want to copy the type when all we're | |
4018 | doing is making a TYPE_DECL for the purposes of | |
4019 | inlining. */ | |
68642fb6 | 4020 | && (!TYPE_NAME (type) |
1c80fb65 | 4021 | || TYPE_NAME (type) != DECL_ABSTRACT_ORIGIN (x))) |
a1774733 BK |
4022 | { |
4023 | DECL_ORIGINAL_TYPE (x) = type; | |
4024 | type = build_type_copy (type); | |
4025 | TYPE_STUB_DECL (type) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x)); | |
4026 | TYPE_NAME (type) = x; | |
4027 | TREE_TYPE (x) = type; | |
4028 | } | |
8d08fdba | 4029 | |
8d08fdba MS |
4030 | if (type != error_mark_node |
4031 | && TYPE_NAME (type) | |
4032 | && TYPE_IDENTIFIER (type)) | |
68642fb6 | 4033 | set_identifier_type_value_with_scope (DECL_NAME (x), type, |
f181d4ae MM |
4034 | current_binding_level); |
4035 | ||
8d08fdba MS |
4036 | } |
4037 | ||
4038 | /* Multiple external decls of the same identifier ought to match. | |
4039 | ||
4040 | We get warnings about inline functions where they are defined. | |
39211cd5 | 4041 | We get warnings about other functions from push_overloaded_decl. |
68642fb6 | 4042 | |
8d08fdba | 4043 | Avoid duplicate warnings where they are used. */ |
39211cd5 | 4044 | if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL) |
8d08fdba MS |
4045 | { |
4046 | tree decl; | |
4047 | ||
f49fad00 JM |
4048 | decl = IDENTIFIER_NAMESPACE_VALUE (name); |
4049 | if (decl && TREE_CODE (decl) == OVERLOAD) | |
4050 | decl = OVL_FUNCTION (decl); | |
8d08fdba | 4051 | |
f49fad00 JM |
4052 | if (decl && decl != error_mark_node |
4053 | && (DECL_EXTERNAL (decl) || TREE_PUBLIC (decl)) | |
8d08fdba MS |
4054 | /* If different sort of thing, we already gave an error. */ |
4055 | && TREE_CODE (decl) == TREE_CODE (x) | |
3bfdc719 | 4056 | && !same_type_p (TREE_TYPE (x), TREE_TYPE (decl))) |
8d08fdba | 4057 | { |
8251199e JM |
4058 | cp_pedwarn ("type mismatch with previous external decl", x); |
4059 | cp_pedwarn_at ("previous external decl of `%#D'", decl); | |
8d08fdba MS |
4060 | } |
4061 | } | |
4062 | ||
8d08fdba MS |
4063 | /* This name is new in its binding level. |
4064 | Install the new declaration and return it. */ | |
2c73f9f5 | 4065 | if (namespace_bindings_p ()) |
8d08fdba MS |
4066 | { |
4067 | /* Install a global value. */ | |
4068 | ||
8d08fdba MS |
4069 | /* If the first global decl has external linkage, |
4070 | warn if we later see static one. */ | |
31928556 | 4071 | if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && TREE_PUBLIC (x)) |
8d08fdba | 4072 | TREE_PUBLIC (name) = 1; |
5362b086 | 4073 | |
92643fea MM |
4074 | /* Bind the name for the entity. */ |
4075 | if (!(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x) | |
4076 | && t != NULL_TREE) | |
4077 | && (TREE_CODE (x) == TYPE_DECL | |
4078 | || TREE_CODE (x) == VAR_DECL | |
4079 | || TREE_CODE (x) == NAMESPACE_DECL | |
4080 | || TREE_CODE (x) == CONST_DECL | |
4081 | || TREE_CODE (x) == TEMPLATE_DECL)) | |
4082 | SET_IDENTIFIER_NAMESPACE_VALUE (name, x); | |
8d08fdba MS |
4083 | |
4084 | /* Don't forget if the function was used via an implicit decl. */ | |
4085 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
4086 | && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name))) | |
4087 | TREE_USED (x) = 1; | |
4088 | ||
4089 | /* Don't forget if its address was taken in that way. */ | |
4090 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
4091 | && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name))) | |
4092 | TREE_ADDRESSABLE (x) = 1; | |
4093 | ||
4094 | /* Warn about mismatches against previous implicit decl. */ | |
4095 | if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE | |
4096 | /* If this real decl matches the implicit, don't complain. */ | |
4097 | && ! (TREE_CODE (x) == FUNCTION_DECL | |
4098 | && TREE_TYPE (TREE_TYPE (x)) == integer_type_node)) | |
8251199e JM |
4099 | cp_warning |
4100 | ("`%D' was previously implicitly declared to return `int'", x); | |
8d08fdba MS |
4101 | |
4102 | /* If new decl is `static' and an `extern' was seen previously, | |
4103 | warn about it. */ | |
a0a33927 MS |
4104 | if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t)) |
4105 | warn_extern_redeclared_static (x, t); | |
8d08fdba MS |
4106 | } |
4107 | else | |
4108 | { | |
4109 | /* Here to install a non-global value. */ | |
f181d4ae | 4110 | tree oldlocal = IDENTIFIER_VALUE (name); |
31928556 | 4111 | tree oldglobal = IDENTIFIER_NAMESPACE_VALUE (name); |
8d08fdba | 4112 | |
f181d4ae MM |
4113 | if (need_new_binding) |
4114 | { | |
0034cf72 | 4115 | push_local_binding (name, x, 0); |
f181d4ae MM |
4116 | /* Because push_local_binding will hook X on to the |
4117 | current_binding_level's name list, we don't want to | |
4118 | do that again below. */ | |
4119 | need_new_binding = 0; | |
4120 | } | |
8d08fdba MS |
4121 | |
4122 | /* If this is a TYPE_DECL, push it into the type value slot. */ | |
4123 | if (TREE_CODE (x) == TYPE_DECL) | |
68642fb6 | 4124 | set_identifier_type_value_with_scope (name, TREE_TYPE (x), |
f181d4ae | 4125 | current_binding_level); |
8d08fdba | 4126 | |
a9aedbc2 MS |
4127 | /* Clear out any TYPE_DECL shadowed by a namespace so that |
4128 | we won't think this is a type. The C struct hack doesn't | |
4129 | go through namespaces. */ | |
4130 | if (TREE_CODE (x) == NAMESPACE_DECL) | |
68642fb6 | 4131 | set_identifier_type_value_with_scope (name, NULL_TREE, |
f181d4ae | 4132 | current_binding_level); |
a9aedbc2 | 4133 | |
e905ac8a MS |
4134 | if (oldlocal) |
4135 | { | |
4136 | tree d = oldlocal; | |
17aec3eb | 4137 | |
74dc0d8c MS |
4138 | while (oldlocal |
4139 | && TREE_CODE (oldlocal) == VAR_DECL | |
4140 | && DECL_DEAD_FOR_LOCAL (oldlocal)) | |
17aec3eb RK |
4141 | oldlocal = DECL_SHADOWED_FOR_VAR (oldlocal); |
4142 | ||
e905ac8a MS |
4143 | if (oldlocal == NULL_TREE) |
4144 | oldlocal = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (d)); | |
4145 | } | |
4146 | ||
8d08fdba MS |
4147 | /* If this is an extern function declaration, see if we |
4148 | have a global definition or declaration for the function. */ | |
4149 | if (oldlocal == NULL_TREE | |
faae18ab | 4150 | && DECL_EXTERNAL (x) |
31928556 | 4151 | && oldglobal != NULL_TREE |
8d08fdba | 4152 | && TREE_CODE (x) == FUNCTION_DECL |
31928556 | 4153 | && TREE_CODE (oldglobal) == FUNCTION_DECL) |
8d08fdba MS |
4154 | { |
4155 | /* We have one. Their types must agree. */ | |
31928556 | 4156 | if (decls_match (x, oldglobal)) |
6060a796 MS |
4157 | /* OK */; |
4158 | else | |
8d08fdba | 4159 | { |
8251199e JM |
4160 | cp_warning ("extern declaration of `%#D' doesn't match", x); |
4161 | cp_warning_at ("global declaration `%#D'", oldglobal); | |
8d08fdba | 4162 | } |
8d08fdba MS |
4163 | } |
4164 | /* If we have a local external declaration, | |
4165 | and no file-scope declaration has yet been seen, | |
4166 | then if we later have a file-scope decl it must not be static. */ | |
4167 | if (oldlocal == NULL_TREE | |
31928556 | 4168 | && oldglobal == NULL_TREE |
8d08fdba MS |
4169 | && DECL_EXTERNAL (x) |
4170 | && TREE_PUBLIC (x)) | |
f181d4ae | 4171 | TREE_PUBLIC (name) = 1; |
8d08fdba | 4172 | |
8d08fdba | 4173 | /* Warn if shadowing an argument at the top level of the body. */ |
e905ac8a MS |
4174 | if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x) |
4175 | /* Inline decls shadow nothing. */ | |
4176 | && !DECL_FROM_INLINE (x) | |
4177 | && TREE_CODE (oldlocal) == PARM_DECL | |
4178 | /* Don't complain if it's from an enclosing function. */ | |
4179 | && DECL_CONTEXT (oldlocal) == current_function_decl | |
4180 | && TREE_CODE (x) != PARM_DECL) | |
8d08fdba MS |
4181 | { |
4182 | /* Go to where the parms should be and see if we | |
4183 | find them there. */ | |
4184 | struct binding_level *b = current_binding_level->level_chain; | |
4185 | ||
4186 | if (cleanup_label) | |
4187 | b = b->level_chain; | |
4188 | ||
4189 | /* ARM $8.3 */ | |
4190 | if (b->parm_flag == 1) | |
8251199e | 4191 | cp_error ("declaration of `%#D' shadows a parameter", name); |
8d08fdba | 4192 | } |
e905ac8a | 4193 | |
8d08fdba | 4194 | /* Maybe warn if shadowing something else. */ |
e905ac8a MS |
4195 | if (warn_shadow && !DECL_EXTERNAL (x) |
4196 | /* Inline decls shadow nothing. */ | |
4197 | && !DECL_FROM_INLINE (x) | |
4198 | /* No shadow warnings for internally generated vars. */ | |
4199 | && ! DECL_ARTIFICIAL (x) | |
4200 | /* No shadow warnings for vars made for inlining. */ | |
4201 | && ! DECL_FROM_INLINE (x)) | |
8d08fdba | 4202 | { |
8d08fdba | 4203 | if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL) |
b9d12519 KG |
4204 | warning ("declaration of `%s' shadows a parameter", |
4205 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4206 | else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE |
4ac14744 | 4207 | && current_class_ptr |
8d08fdba | 4208 | && !TREE_STATIC (name)) |
b9d12519 KG |
4209 | warning ("declaration of `%s' shadows a member of `this'", |
4210 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4211 | else if (oldlocal != NULL_TREE) |
b9d12519 KG |
4212 | warning ("declaration of `%s' shadows previous local", |
4213 | IDENTIFIER_POINTER (name)); | |
31928556 | 4214 | else if (oldglobal != NULL_TREE) |
30394414 | 4215 | /* XXX shadow warnings in outer-more namespaces */ |
b9d12519 KG |
4216 | warning ("declaration of `%s' shadows global declaration", |
4217 | IDENTIFIER_POINTER (name)); | |
8d08fdba | 4218 | } |
e1cd6e56 | 4219 | } |
8d08fdba | 4220 | |
e1cd6e56 | 4221 | if (TREE_CODE (x) == FUNCTION_DECL) |
f30432d7 | 4222 | check_default_args (x); |
8145f082 MS |
4223 | |
4224 | /* Keep count of variables in this level with incomplete type. */ | |
8145f082 | 4225 | if (TREE_CODE (x) == VAR_DECL |
28cbf42c | 4226 | && TREE_TYPE (x) != error_mark_node |
d0f062fb | 4227 | && ((!COMPLETE_TYPE_P (TREE_TYPE (x)) |
f30432d7 MS |
4228 | && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE)) |
4229 | /* RTTI TD entries are created while defining the type_info. */ | |
4230 | || (TYPE_LANG_SPECIFIC (TREE_TYPE (x)) | |
4231 | && TYPE_BEING_DEFINED (TREE_TYPE (x))))) | |
70adf8a9 JM |
4232 | { |
4233 | if (namespace_bindings_p ()) | |
4234 | namespace_scope_incomplete | |
4235 | = tree_cons (NULL_TREE, x, namespace_scope_incomplete); | |
4236 | else | |
4237 | current_binding_level->incomplete | |
4238 | = tree_cons (NULL_TREE, x, current_binding_level->incomplete); | |
4239 | } | |
8d08fdba MS |
4240 | } |
4241 | ||
f181d4ae | 4242 | if (need_new_binding) |
68642fb6 | 4243 | add_decl_to_level (x, |
efee38a9 MM |
4244 | DECL_NAMESPACE_SCOPE_P (x) |
4245 | ? NAMESPACE_LEVEL (CP_DECL_CONTEXT (x)) | |
4246 | : current_binding_level); | |
8d08fdba MS |
4247 | |
4248 | return x; | |
4249 | } | |
4250 | ||
5566b478 MS |
4251 | /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the |
4252 | caller to set DECL_CONTEXT properly. */ | |
8d08fdba MS |
4253 | |
4254 | static tree | |
4255 | pushdecl_with_scope (x, level) | |
4256 | tree x; | |
4257 | struct binding_level *level; | |
4258 | { | |
8d019cef | 4259 | register struct binding_level *b; |
5566b478 | 4260 | tree function_decl = current_function_decl; |
8d08fdba | 4261 | |
5566b478 | 4262 | current_function_decl = NULL_TREE; |
8d019cef JM |
4263 | if (level->parm_flag == 2) |
4264 | { | |
4265 | b = class_binding_level; | |
4266 | class_binding_level = level; | |
4267 | pushdecl_class_level (x); | |
4268 | class_binding_level = b; | |
4269 | } | |
4270 | else | |
4271 | { | |
4272 | b = current_binding_level; | |
4273 | current_binding_level = level; | |
4274 | x = pushdecl (x); | |
4275 | current_binding_level = b; | |
4276 | } | |
5566b478 | 4277 | current_function_decl = function_decl; |
8d08fdba MS |
4278 | return x; |
4279 | } | |
4280 | ||
2c73f9f5 | 4281 | /* Like pushdecl, only it places X in the current namespace, |
8d08fdba | 4282 | if appropriate. */ |
e92cc029 | 4283 | |
8d08fdba | 4284 | tree |
2c73f9f5 | 4285 | pushdecl_namespace_level (x) |
8d08fdba MS |
4286 | tree x; |
4287 | { | |
8f032717 | 4288 | register struct binding_level *b = current_binding_level; |
2c73f9f5 ML |
4289 | register tree t; |
4290 | ||
4291 | t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace)); | |
8d08fdba MS |
4292 | |
4293 | /* Now, the type_shadowed stack may screw us. Munge it so it does | |
4294 | what we want. */ | |
4295 | if (TREE_CODE (x) == TYPE_DECL) | |
4296 | { | |
4297 | tree name = DECL_NAME (x); | |
4298 | tree newval; | |
4299 | tree *ptr = (tree *)0; | |
4300 | for (; b != global_binding_level; b = b->level_chain) | |
4301 | { | |
4302 | tree shadowed = b->type_shadowed; | |
4303 | for (; shadowed; shadowed = TREE_CHAIN (shadowed)) | |
4304 | if (TREE_PURPOSE (shadowed) == name) | |
4305 | { | |
4306 | ptr = &TREE_VALUE (shadowed); | |
4307 | /* Can't break out of the loop here because sometimes | |
4308 | a binding level will have duplicate bindings for | |
4309 | PT names. It's gross, but I haven't time to fix it. */ | |
4310 | } | |
4311 | } | |
4312 | newval = TREE_TYPE (x); | |
4313 | if (ptr == (tree *)0) | |
4314 | { | |
4315 | /* @@ This shouldn't be needed. My test case "zstring.cc" trips | |
4316 | up here if this is changed to an assertion. --KR */ | |
4317 | SET_IDENTIFIER_TYPE_VALUE (name, newval); | |
4318 | } | |
4319 | else | |
4320 | { | |
8d08fdba MS |
4321 | *ptr = newval; |
4322 | } | |
4323 | } | |
4324 | return t; | |
4325 | } | |
4326 | ||
2c73f9f5 ML |
4327 | /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, |
4328 | if appropriate. */ | |
4329 | ||
4330 | tree | |
4331 | pushdecl_top_level (x) | |
4332 | tree x; | |
4333 | { | |
b35d4555 | 4334 | push_to_top_level (); |
2c73f9f5 | 4335 | x = pushdecl_namespace_level (x); |
b35d4555 | 4336 | pop_from_top_level (); |
2c73f9f5 ML |
4337 | return x; |
4338 | } | |
4339 | ||
8d08fdba | 4340 | /* Make the declaration of X appear in CLASS scope. */ |
e92cc029 | 4341 | |
61a127b3 | 4342 | void |
8d08fdba MS |
4343 | pushdecl_class_level (x) |
4344 | tree x; | |
4345 | { | |
4346 | /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class | |
4347 | scope looks for the pre-mangled name. */ | |
8f032717 MM |
4348 | register tree name; |
4349 | ||
4350 | if (TREE_CODE (x) == OVERLOAD) | |
4351 | x = OVL_CURRENT (x); | |
4352 | name = DECL_NAME (x); | |
8d08fdba MS |
4353 | |
4354 | if (name) | |
4355 | { | |
4356 | push_class_level_binding (name, x); | |
4357 | if (TREE_CODE (x) == TYPE_DECL) | |
f181d4ae | 4358 | set_identifier_type_value (name, TREE_TYPE (x)); |
8d08fdba | 4359 | } |
6bdb8141 | 4360 | else if (ANON_AGGR_TYPE_P (TREE_TYPE (x))) |
8f032717 MM |
4361 | { |
4362 | tree f; | |
4363 | ||
4364 | for (f = TYPE_FIELDS (TREE_TYPE (x)); | |
4365 | f; | |
4366 | f = TREE_CHAIN (f)) | |
4367 | pushdecl_class_level (f); | |
4368 | } | |
8d08fdba MS |
4369 | } |
4370 | ||
9188c363 MM |
4371 | /* Enter DECL into the symbol table, if that's appropriate. Returns |
4372 | DECL, or a modified version thereof. */ | |
4373 | ||
4374 | tree | |
4375 | maybe_push_decl (decl) | |
4376 | tree decl; | |
4377 | { | |
4378 | tree type = TREE_TYPE (decl); | |
4379 | ||
4380 | /* Add this decl to the current binding level, but not if it comes | |
4381 | from another scope, e.g. a static member variable. TEM may equal | |
4382 | DECL or it may be a previous decl of the same name. */ | |
07c88314 MM |
4383 | if (decl == error_mark_node |
4384 | || (TREE_CODE (decl) != PARM_DECL | |
4385 | && DECL_CONTEXT (decl) != NULL_TREE | |
4386 | /* Definitions of namespace members outside their namespace are | |
4387 | possible. */ | |
4388 | && TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL) | |
9188c363 MM |
4389 | || (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ()) |
4390 | || TREE_CODE (type) == UNKNOWN_TYPE | |
558475f0 | 4391 | /* The declaration of a template specialization does not affect |
9188c363 MM |
4392 | the functions available for overload resolution, so we do not |
4393 | call pushdecl. */ | |
4394 | || (TREE_CODE (decl) == FUNCTION_DECL | |
4395 | && DECL_TEMPLATE_SPECIALIZATION (decl))) | |
4396 | return decl; | |
4397 | else | |
4398 | return pushdecl (decl); | |
4399 | } | |
4400 | ||
8d08fdba MS |
4401 | /* Make the declaration(s) of X appear in CLASS scope |
4402 | under the name NAME. */ | |
e92cc029 | 4403 | |
8d08fdba MS |
4404 | void |
4405 | push_class_level_binding (name, x) | |
4406 | tree name; | |
4407 | tree x; | |
4408 | { | |
8f032717 | 4409 | tree binding; |
68642fb6 | 4410 | /* The class_binding_level will be NULL if x is a template |
98c1c668 JM |
4411 | parameter name in a member template. */ |
4412 | if (!class_binding_level) | |
4413 | return; | |
4414 | ||
908c4e83 MM |
4415 | /* Make sure that this new member does not have the same name |
4416 | as a template parameter. */ | |
4417 | if (TYPE_BEING_DEFINED (current_class_type)) | |
4418 | check_template_shadow (x); | |
4419 | ||
f181d4ae MM |
4420 | /* If this declaration shadows a declaration from an enclosing |
4421 | class, then we will need to restore IDENTIFIER_CLASS_VALUE when | |
4422 | we leave this class. Record the shadowed declaration here. */ | |
8f032717 | 4423 | binding = IDENTIFIER_BINDING (name); |
68642fb6 | 4424 | if (binding |
8f032717 MM |
4425 | && ((TREE_CODE (x) == OVERLOAD |
4426 | && BINDING_VALUE (binding) | |
4427 | && is_overloaded_fn (BINDING_VALUE (binding))) | |
4428 | || INHERITED_VALUE_BINDING_P (binding))) | |
4429 | { | |
4430 | tree shadow; | |
4431 | tree old_decl; | |
4432 | ||
4433 | /* If the old binding was from a base class, and was for a tag | |
4434 | name, slide it over to make room for the new binding. The | |
4435 | old binding is still visible if explicitly qualified with a | |
4436 | class-key. */ | |
4437 | if (INHERITED_VALUE_BINDING_P (binding) | |
4438 | && BINDING_VALUE (binding) | |
4439 | && TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL | |
4440 | && DECL_ARTIFICIAL (BINDING_VALUE (binding)) | |
4441 | && !(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x))) | |
4442 | { | |
4443 | old_decl = BINDING_TYPE (binding); | |
4444 | BINDING_TYPE (binding) = BINDING_VALUE (binding); | |
4445 | BINDING_VALUE (binding) = NULL_TREE; | |
4446 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
4447 | } | |
4448 | else | |
4449 | old_decl = BINDING_VALUE (binding); | |
4450 | ||
76191fdd NS |
4451 | /* Find the previous binding of name on the class-shadowed |
4452 | list, and update it. */ | |
8f032717 MM |
4453 | for (shadow = class_binding_level->class_shadowed; |
4454 | shadow; | |
4455 | shadow = TREE_CHAIN (shadow)) | |
4456 | if (TREE_PURPOSE (shadow) == name | |
4457 | && TREE_TYPE (shadow) == old_decl) | |
4458 | { | |
4459 | BINDING_VALUE (binding) = x; | |
4460 | INHERITED_VALUE_BINDING_P (binding) = 0; | |
4461 | TREE_TYPE (shadow) = x; | |
76191fdd | 4462 | IDENTIFIER_CLASS_VALUE (name) = x; |
8f032717 MM |
4463 | return; |
4464 | } | |
4465 | } | |
f181d4ae | 4466 | |
8f032717 | 4467 | /* If we didn't replace an existing binding, put the binding on the |
76191fdd | 4468 | stack of bindings for the identifier, and update the shadowed list. */ |
8f032717 MM |
4469 | if (push_class_binding (name, x)) |
4470 | { | |
8f032717 | 4471 | class_binding_level->class_shadowed |
76191fdd | 4472 | = tree_cons (name, NULL, |
8f032717 | 4473 | class_binding_level->class_shadowed); |
8f032717 MM |
4474 | /* Record the value we are binding NAME to so that we can know |
4475 | what to pop later. */ | |
4476 | TREE_TYPE (class_binding_level->class_shadowed) = x; | |
4477 | } | |
8d08fdba MS |
4478 | } |
4479 | ||
dd4fae80 ML |
4480 | /* Insert another USING_DECL into the current binding level, returning |
4481 | this declaration. If this is a redeclaration, do nothing, and | |
4482 | return NULL_TREE if this not in namespace scope (in namespace | |
4483 | scope, a using decl might extend any previous bindings). */ | |
e92cc029 | 4484 | |
2c73f9f5 ML |
4485 | tree |
4486 | push_using_decl (scope, name) | |
4487 | tree scope; | |
4488 | tree name; | |
8d08fdba | 4489 | { |
2c73f9f5 | 4490 | tree decl; |
68642fb6 | 4491 | |
2c73f9f5 ML |
4492 | my_friendly_assert (TREE_CODE (scope) == NAMESPACE_DECL, 383); |
4493 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 384); | |
4494 | for (decl = current_binding_level->usings; decl; decl = TREE_CHAIN (decl)) | |
4495 | if (DECL_INITIAL (decl) == scope && DECL_NAME (decl) == name) | |
4496 | break; | |
4497 | if (decl) | |
dd4fae80 | 4498 | return namespace_bindings_p () ? decl : NULL_TREE; |
4ce3d537 | 4499 | decl = build_lang_decl (USING_DECL, name, void_type_node); |
2c73f9f5 ML |
4500 | DECL_INITIAL (decl) = scope; |
4501 | TREE_CHAIN (decl) = current_binding_level->usings; | |
4502 | current_binding_level->usings = decl; | |
4503 | return decl; | |
8d08fdba MS |
4504 | } |
4505 | ||
ea9635c7 ML |
4506 | /* Add namespace to using_directives. Return NULL_TREE if nothing was |
4507 | changed (i.e. there was already a directive), or the fresh | |
4508 | TREE_LIST otherwise. */ | |
4509 | ||
4510 | tree | |
9ed182dc | 4511 | push_using_directive (used) |
ea9635c7 | 4512 | tree used; |
ea9635c7 ML |
4513 | { |
4514 | tree ud = current_binding_level->using_directives; | |
9ed182dc | 4515 | tree iter, ancestor; |
68642fb6 | 4516 | |
ea9635c7 ML |
4517 | /* Check if we already have this. */ |
4518 | if (purpose_member (used, ud) != NULL_TREE) | |
4519 | return NULL_TREE; | |
00dc6358 JM |
4520 | |
4521 | /* Recursively add all namespaces used. */ | |
4522 | for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter)) | |
9ed182dc | 4523 | push_using_directive (TREE_PURPOSE (iter)); |
00dc6358 | 4524 | |
9ed182dc | 4525 | ancestor = namespace_ancestor (current_decl_namespace (), used); |
00dc6358 | 4526 | ud = current_binding_level->using_directives; |
e1b3e07d | 4527 | ud = tree_cons (used, ancestor, ud); |
ea9635c7 ML |
4528 | current_binding_level->using_directives = ud; |
4529 | return ud; | |
4530 | } | |
4531 | ||
f181d4ae MM |
4532 | /* DECL is a FUNCTION_DECL for a non-member function, which may have |
4533 | other definitions already in place. We get around this by making | |
4534 | the value of the identifier point to a list of all the things that | |
4535 | want to be referenced by that name. It is then up to the users of | |
4536 | that name to decide what to do with that list. | |
8d08fdba | 4537 | |
17aec3eb RK |
4538 | DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its |
4539 | DECL_TEMPLATE_RESULT. It is dealt with the same way. | |
8d08fdba | 4540 | |
7bdbfa05 MM |
4541 | FLAGS is a bitwise-or of the following values: |
4542 | PUSH_LOCAL: Bind DECL in the current scope, rather than at | |
4543 | namespace scope. | |
4544 | PUSH_USING: DECL is being pushed as the result of a using | |
68642fb6 | 4545 | declaration. |
7bdbfa05 | 4546 | |
8d08fdba MS |
4547 | The value returned may be a previous declaration if we guessed wrong |
4548 | about what language DECL should belong to (C or C++). Otherwise, | |
4549 | it's always DECL (and never something that's not a _DECL). */ | |
e92cc029 | 4550 | |
7bdbfa05 MM |
4551 | tree |
4552 | push_overloaded_decl (decl, flags) | |
8d08fdba | 4553 | tree decl; |
7bdbfa05 | 4554 | int flags; |
8d08fdba | 4555 | { |
f181d4ae | 4556 | tree name = DECL_NAME (decl); |
700f8a87 | 4557 | tree old; |
f181d4ae | 4558 | tree new_binding; |
7bdbfa05 | 4559 | int doing_global = (namespace_bindings_p () || !(flags & PUSH_LOCAL)); |
700f8a87 MS |
4560 | |
4561 | if (doing_global) | |
9f33663b | 4562 | old = namespace_binding (name, DECL_CONTEXT (decl)); |
700f8a87 | 4563 | else |
f181d4ae | 4564 | old = lookup_name_current_level (name); |
8d08fdba | 4565 | |
700f8a87 | 4566 | if (old) |
8d08fdba | 4567 | { |
e1cd6e56 | 4568 | if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old)) |
8926095f | 4569 | { |
700f8a87 | 4570 | tree t = TREE_TYPE (old); |
cdf5b885 MS |
4571 | if (IS_AGGR_TYPE (t) && warn_shadow |
4572 | && (! DECL_IN_SYSTEM_HEADER (decl) | |
4573 | || ! DECL_IN_SYSTEM_HEADER (old))) | |
8251199e | 4574 | cp_warning ("`%#D' hides constructor for `%#T'", decl, t); |
5b605f68 | 4575 | old = NULL_TREE; |
8926095f | 4576 | } |
700f8a87 | 4577 | else if (is_overloaded_fn (old)) |
8d08fdba | 4578 | { |
8d08fdba | 4579 | tree tmp; |
68642fb6 | 4580 | |
2c73f9f5 | 4581 | for (tmp = old; tmp; tmp = OVL_NEXT (tmp)) |
7bdbfa05 MM |
4582 | { |
4583 | tree fn = OVL_CURRENT (tmp); | |
4584 | ||
4585 | if (TREE_CODE (tmp) == OVERLOAD && OVL_USED (tmp) | |
4586 | && !(flags & PUSH_USING) | |
4587 | && compparms (TYPE_ARG_TYPES (TREE_TYPE (fn)), | |
4588 | TYPE_ARG_TYPES (TREE_TYPE (decl)))) | |
4589 | cp_error ("`%#D' conflicts with previous using declaration `%#D'", | |
4590 | decl, fn); | |
68642fb6 | 4591 | |
7bdbfa05 MM |
4592 | if (duplicate_decls (decl, fn)) |
4593 | return fn; | |
4594 | } | |
8d08fdba | 4595 | } |
655dc6ee JM |
4596 | else if (old == error_mark_node) |
4597 | /* Ignore the undefined symbol marker. */ | |
4598 | old = NULL_TREE; | |
e1cd6e56 MS |
4599 | else |
4600 | { | |
8251199e JM |
4601 | cp_error_at ("previous non-function declaration `%#D'", old); |
4602 | cp_error ("conflicts with function declaration `%#D'", decl); | |
a9aedbc2 | 4603 | return decl; |
e1cd6e56 | 4604 | } |
8d08fdba | 4605 | } |
7177d104 | 4606 | |
700f8a87 | 4607 | if (old || TREE_CODE (decl) == TEMPLATE_DECL) |
8d08fdba | 4608 | { |
2c73f9f5 | 4609 | if (old && TREE_CODE (old) != OVERLOAD) |
f181d4ae MM |
4610 | new_binding = ovl_cons (decl, ovl_cons (old, NULL_TREE)); |
4611 | else | |
4612 | new_binding = ovl_cons (decl, old); | |
347d73d7 ML |
4613 | if (flags & PUSH_USING) |
4614 | OVL_USED (new_binding) = 1; | |
8d08fdba MS |
4615 | } |
4616 | else | |
f181d4ae MM |
4617 | /* NAME is not ambiguous. */ |
4618 | new_binding = decl; | |
700f8a87 MS |
4619 | |
4620 | if (doing_global) | |
f181d4ae | 4621 | set_namespace_binding (name, current_namespace, new_binding); |
700f8a87 | 4622 | else |
f181d4ae MM |
4623 | { |
4624 | /* We only create an OVERLOAD if there was a previous binding at | |
0580c9aa ML |
4625 | this level, or if decl is a template. In the former case, we |
4626 | need to remove the old binding and replace it with the new | |
4627 | binding. We must also run through the NAMES on the binding | |
4628 | level where the name was bound to update the chain. */ | |
4629 | ||
4630 | if (TREE_CODE (new_binding) == OVERLOAD && old) | |
f181d4ae MM |
4631 | { |
4632 | tree *d; | |
68642fb6 | 4633 | |
f181d4ae MM |
4634 | for (d = &BINDING_LEVEL (IDENTIFIER_BINDING (name))->names; |
4635 | *d; | |
4636 | d = &TREE_CHAIN (*d)) | |
4637 | if (*d == old | |
4638 | || (TREE_CODE (*d) == TREE_LIST | |
4639 | && TREE_VALUE (*d) == old)) | |
4640 | { | |
d8f8dca1 MM |
4641 | if (TREE_CODE (*d) == TREE_LIST) |
4642 | /* Just replace the old binding with the new. */ | |
4643 | TREE_VALUE (*d) = new_binding; | |
4644 | else | |
4645 | /* Build a TREE_LIST to wrap the OVERLOAD. */ | |
68642fb6 | 4646 | *d = tree_cons (NULL_TREE, new_binding, |
ed5511d9 | 4647 | TREE_CHAIN (*d)); |
d8f8dca1 MM |
4648 | |
4649 | /* And update the CPLUS_BINDING node. */ | |
4650 | BINDING_VALUE (IDENTIFIER_BINDING (name)) | |
4651 | = new_binding; | |
4652 | return decl; | |
f181d4ae MM |
4653 | } |
4654 | ||
d8f8dca1 MM |
4655 | /* We should always find a previous binding in this case. */ |
4656 | my_friendly_abort (0); | |
f181d4ae MM |
4657 | } |
4658 | ||
4659 | /* Install the new binding. */ | |
0034cf72 | 4660 | push_local_binding (name, new_binding, flags); |
f181d4ae | 4661 | } |
700f8a87 | 4662 | |
8d08fdba MS |
4663 | return decl; |
4664 | } | |
4665 | \f | |
4666 | /* Generate an implicit declaration for identifier FUNCTIONID | |
4667 | as a function of type int (). Print a warning if appropriate. */ | |
4668 | ||
4669 | tree | |
4670 | implicitly_declare (functionid) | |
4671 | tree functionid; | |
4672 | { | |
4673 | register tree decl; | |
8d08fdba MS |
4674 | |
4675 | /* We used to reuse an old implicit decl here, | |
4676 | but this loses with inline functions because it can clobber | |
4677 | the saved decl chains. */ | |
4678 | decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type); | |
4679 | ||
4680 | DECL_EXTERNAL (decl) = 1; | |
4681 | TREE_PUBLIC (decl) = 1; | |
4682 | ||
cab1f180 | 4683 | /* ISO standard says implicit declarations are in the innermost block. |
d22c8596 | 4684 | So we record the decl in the standard fashion. */ |
8d08fdba MS |
4685 | pushdecl (decl); |
4686 | rest_of_decl_compilation (decl, NULL_PTR, 0, 0); | |
4687 | ||
4688 | if (warn_implicit | |
4689 | /* Only one warning per identifier. */ | |
4690 | && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE) | |
4691 | { | |
8251199e | 4692 | cp_pedwarn ("implicit declaration of function `%#D'", decl); |
8d08fdba MS |
4693 | } |
4694 | ||
4695 | SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl); | |
4696 | ||
8d08fdba MS |
4697 | return decl; |
4698 | } | |
4699 | ||
8251199e | 4700 | /* Return zero if the declaration NEWDECL is valid |
8d08fdba MS |
4701 | when the declaration OLDDECL (assumed to be for the same name) |
4702 | has already been seen. | |
4703 | Otherwise return an error message format string with a %s | |
4704 | where the identifier should go. */ | |
4705 | ||
d8e178a0 | 4706 | static const char * |
8d08fdba MS |
4707 | redeclaration_error_message (newdecl, olddecl) |
4708 | tree newdecl, olddecl; | |
4709 | { | |
4710 | if (TREE_CODE (newdecl) == TYPE_DECL) | |
4711 | { | |
4712 | /* Because C++ can put things into name space for free, | |
4713 | constructs like "typedef struct foo { ... } foo" | |
4714 | would look like an erroneous redeclaration. */ | |
3bfdc719 | 4715 | if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl))) |
8251199e | 4716 | return 0; |
8d08fdba | 4717 | else |
8251199e | 4718 | return "redefinition of `%#D'"; |
8d08fdba MS |
4719 | } |
4720 | else if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
4721 | { | |
4722 | /* If this is a pure function, its olddecl will actually be | |
4723 | the original initialization to `0' (which we force to call | |
4724 | abort()). Don't complain about redefinition in this case. */ | |
fee7654e | 4725 | if (DECL_LANG_SPECIFIC (olddecl) && DECL_PURE_VIRTUAL_P (olddecl)) |
8251199e | 4726 | return 0; |
8d08fdba | 4727 | |
2c73f9f5 ML |
4728 | /* If both functions come from different namespaces, this is not |
4729 | a redeclaration - this is a conflict with a used function. */ | |
6eb3bb27 | 4730 | if (DECL_NAMESPACE_SCOPE_P (olddecl) |
2c73f9f5 | 4731 | && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl)) |
8251199e | 4732 | return "`%D' conflicts with used function"; |
2c73f9f5 | 4733 | |
db5ae43f MS |
4734 | /* We'll complain about linkage mismatches in |
4735 | warn_extern_redeclared_static. */ | |
4736 | ||
2c73f9f5 | 4737 | /* Defining the same name twice is no good. */ |
8d08fdba | 4738 | if (DECL_INITIAL (olddecl) != NULL_TREE |
faae18ab | 4739 | && DECL_INITIAL (newdecl) != NULL_TREE) |
8d08fdba MS |
4740 | { |
4741 | if (DECL_NAME (olddecl) == NULL_TREE) | |
8251199e | 4742 | return "`%#D' not declared in class"; |
8d08fdba | 4743 | else |
8251199e | 4744 | return "redefinition of `%#D'"; |
8d08fdba | 4745 | } |
8251199e | 4746 | return 0; |
8d08fdba | 4747 | } |
51c184be MS |
4748 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
4749 | { | |
ec255269 | 4750 | if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL |
5362b086 | 4751 | && (DECL_TEMPLATE_RESULT (newdecl) |
f4381d62 | 4752 | != DECL_TEMPLATE_RESULT (olddecl)) |
ec255269 MS |
4753 | && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl)) |
4754 | && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl))) | |
4755 | || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL | |
d0f062fb NS |
4756 | && COMPLETE_TYPE_P (TREE_TYPE (newdecl)) |
4757 | && COMPLETE_TYPE_P (TREE_TYPE (olddecl)))) | |
8251199e JM |
4758 | return "redefinition of `%#D'"; |
4759 | return 0; | |
51c184be | 4760 | } |
1f51a992 | 4761 | else if (toplevel_bindings_p () || DECL_NAMESPACE_SCOPE_P (newdecl)) |
8d08fdba MS |
4762 | { |
4763 | /* Objects declared at top level: */ | |
4764 | /* If at least one is a reference, it's ok. */ | |
4765 | if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl)) | |
8251199e | 4766 | return 0; |
8926095f | 4767 | /* Reject two definitions. */ |
8251199e | 4768 | return "redefinition of `%#D'"; |
8d08fdba MS |
4769 | } |
4770 | else | |
4771 | { | |
4772 | /* Objects declared with block scope: */ | |
4773 | /* Reject two definitions, and reject a definition | |
4774 | together with an external reference. */ | |
4775 | if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl))) | |
8251199e JM |
4776 | return "redeclaration of `%#D'"; |
4777 | return 0; | |
8d08fdba MS |
4778 | } |
4779 | } | |
4780 | \f | |
acef433b | 4781 | /* Create a new label, named ID. */ |
8d08fdba | 4782 | |
acef433b MM |
4783 | static tree |
4784 | make_label_decl (id, local_p) | |
8d08fdba | 4785 | tree id; |
acef433b | 4786 | int local_p; |
8d08fdba | 4787 | { |
acef433b | 4788 | tree decl; |
8d08fdba | 4789 | |
acef433b | 4790 | decl = build_decl (LABEL_DECL, id, void_type_node); |
b35d4555 | 4791 | if (expanding_p) |
acef433b MM |
4792 | /* Make sure every label has an rtx. */ |
4793 | label_rtx (decl); | |
4794 | ||
4795 | DECL_CONTEXT (decl) = current_function_decl; | |
4796 | DECL_MODE (decl) = VOIDmode; | |
4797 | C_DECLARED_LABEL_FLAG (decl) = local_p; | |
8d08fdba | 4798 | |
acef433b MM |
4799 | /* Say where one reference is to the label, for the sake of the |
4800 | error if it is not defined. */ | |
4801 | DECL_SOURCE_LINE (decl) = lineno; | |
4802 | DECL_SOURCE_FILE (decl) = input_filename; | |
4803 | ||
4804 | /* Record the fact that this identifier is bound to this label. */ | |
4805 | SET_IDENTIFIER_LABEL_VALUE (id, decl); | |
4806 | ||
6625cdb5 JM |
4807 | return decl; |
4808 | } | |
4809 | ||
4810 | /* Record this label on the list of used labels so that we can check | |
4811 | at the end of the function to see whether or not the label was | |
4812 | actually defined, and so we can check when the label is defined whether | |
4813 | this use is valid. */ | |
4814 | ||
4815 | static void | |
4816 | use_label (decl) | |
4817 | tree decl; | |
4818 | { | |
4819 | if (named_label_uses == NULL | |
4820 | || named_label_uses->names_in_scope != current_binding_level->names | |
4821 | || named_label_uses->label_decl != decl) | |
4822 | { | |
4823 | struct named_label_use_list *new_ent; | |
4824 | new_ent = ((struct named_label_use_list *) | |
4825 | ggc_alloc (sizeof (struct named_label_use_list))); | |
e349ee73 MS |
4826 | new_ent->label_decl = decl; |
4827 | new_ent->names_in_scope = current_binding_level->names; | |
4828 | new_ent->binding_level = current_binding_level; | |
4829 | new_ent->lineno_o_goto = lineno; | |
4830 | new_ent->filename_o_goto = input_filename; | |
4831 | new_ent->next = named_label_uses; | |
4832 | named_label_uses = new_ent; | |
8d08fdba | 4833 | } |
acef433b | 4834 | } |
8d08fdba | 4835 | |
acef433b MM |
4836 | /* Look for a label named ID in the current function. If one cannot |
4837 | be found, create one. (We keep track of used, but undefined, | |
4838 | labels, and complain about them at the end of a function.) */ | |
8d08fdba | 4839 | |
68642fb6 | 4840 | tree |
acef433b MM |
4841 | lookup_label (id) |
4842 | tree id; | |
4843 | { | |
4844 | tree decl; | |
6625cdb5 | 4845 | struct named_label_list *ent; |
8d08fdba | 4846 | |
acef433b MM |
4847 | /* You can't use labels at global scope. */ |
4848 | if (current_function_decl == NULL_TREE) | |
4849 | { | |
4850 | error ("label `%s' referenced outside of any function", | |
4851 | IDENTIFIER_POINTER (id)); | |
4852 | return NULL_TREE; | |
4853 | } | |
68642fb6 | 4854 | |
acef433b MM |
4855 | /* See if we've already got this label. */ |
4856 | decl = IDENTIFIER_LABEL_VALUE (id); | |
4857 | if (decl != NULL_TREE && DECL_CONTEXT (decl) == current_function_decl) | |
4858 | return decl; | |
8d08fdba | 4859 | |
acef433b MM |
4860 | /* Record this label on the list of labels used in this function. |
4861 | We do this before calling make_label_decl so that we get the | |
4862 | IDENTIFIER_LABEL_VALUE before the new label is declared. */ | |
6625cdb5 | 4863 | ent = ((struct named_label_list *) |
f8a83ee3 | 4864 | ggc_alloc_cleared (sizeof (struct named_label_list))); |
6625cdb5 JM |
4865 | ent->old_value = IDENTIFIER_LABEL_VALUE (id); |
4866 | ent->next = named_labels; | |
4867 | named_labels = ent; | |
4868 | ||
acef433b MM |
4869 | /* We need a new label. */ |
4870 | decl = make_label_decl (id, /*local_p=*/0); | |
6625cdb5 | 4871 | |
acef433b | 4872 | /* Now fill in the information we didn't have before. */ |
6625cdb5 | 4873 | ent->label_decl = decl; |
8d08fdba MS |
4874 | |
4875 | return decl; | |
4876 | } | |
4877 | ||
acef433b | 4878 | /* Declare a local label named ID. */ |
8d08fdba MS |
4879 | |
4880 | tree | |
acef433b MM |
4881 | declare_local_label (id) |
4882 | tree id; | |
8d08fdba | 4883 | { |
acef433b | 4884 | tree decl; |
8d08fdba | 4885 | |
acef433b MM |
4886 | /* Add a new entry to the SHADOWED_LABELS list so that when we leave |
4887 | this scope we can restore the old value of | |
4888 | IDENTIFIER_TYPE_VALUE. */ | |
68642fb6 | 4889 | current_binding_level->shadowed_labels |
acef433b MM |
4890 | = tree_cons (IDENTIFIER_LABEL_VALUE (id), NULL_TREE, |
4891 | current_binding_level->shadowed_labels); | |
4892 | /* Look for the label. */ | |
4893 | decl = make_label_decl (id, /*local_p=*/1); | |
4894 | /* Now fill in the information we didn't have before. */ | |
4895 | TREE_VALUE (current_binding_level->shadowed_labels) = decl; | |
68642fb6 | 4896 | |
acef433b | 4897 | return decl; |
8d08fdba MS |
4898 | } |
4899 | ||
6625cdb5 JM |
4900 | /* Returns nonzero if it is ill-formed to jump past the declaration of |
4901 | DECL. Returns 2 if it's also a real problem. */ | |
4902 | ||
4903 | static int | |
4904 | decl_jump_unsafe (decl) | |
4905 | tree decl; | |
4906 | { | |
4907 | if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl)) | |
4908 | return 0; | |
4909 | ||
4910 | if (DECL_INITIAL (decl) == NULL_TREE | |
4911 | && pod_type_p (TREE_TYPE (decl))) | |
4912 | return 0; | |
4913 | ||
4914 | /* This is really only important if we're crossing an initialization. | |
4915 | The POD stuff is just pedantry; why should it matter if the class | |
4916 | contains a field of pointer to member type? */ | |
4917 | if (DECL_INITIAL (decl) | |
4918 | || (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))) | |
4919 | return 2; | |
4920 | return 1; | |
4921 | } | |
4922 | ||
4923 | /* Check that a single previously seen jump to a newly defined label | |
4924 | is OK. DECL is the LABEL_DECL or 0; LEVEL is the binding_level for | |
4925 | the jump context; NAMES are the names in scope in LEVEL at the jump | |
4926 | context; FILE and LINE are the source position of the jump or 0. */ | |
4927 | ||
4928 | static void | |
4929 | check_previous_goto_1 (decl, level, names, file, line) | |
4930 | tree decl; | |
4931 | struct binding_level *level; | |
4932 | tree names; | |
4933 | const char *file; | |
4934 | int line; | |
4935 | { | |
4936 | int identified = 0; | |
4937 | int saw_eh = 0; | |
4938 | struct binding_level *b = current_binding_level; | |
4939 | for (; b; b = b->level_chain) | |
4940 | { | |
4941 | tree new_decls = b->names; | |
4942 | tree old_decls = (b == level ? names : NULL_TREE); | |
4943 | for (; new_decls != old_decls; | |
4944 | new_decls = TREE_CHAIN (new_decls)) | |
4945 | { | |
4946 | int problem = decl_jump_unsafe (new_decls); | |
4947 | if (! problem) | |
4948 | continue; | |
4949 | ||
4950 | if (! identified) | |
4951 | { | |
4952 | if (decl) | |
4953 | cp_pedwarn ("jump to label `%D'", decl); | |
4954 | else | |
4955 | pedwarn ("jump to case label"); | |
4956 | ||
4957 | if (file) | |
4958 | pedwarn_with_file_and_line (file, line, " from here"); | |
4959 | identified = 1; | |
4960 | } | |
4961 | ||
826840d9 | 4962 | if (problem > 1) |
6625cdb5 JM |
4963 | cp_error_at (" crosses initialization of `%#D'", |
4964 | new_decls); | |
4965 | else | |
4966 | cp_pedwarn_at (" enters scope of non-POD `%#D'", | |
4967 | new_decls); | |
4968 | } | |
4969 | ||
4970 | if (b == level) | |
4971 | break; | |
826840d9 | 4972 | if ((b->is_try_scope || b->is_catch_scope) && ! saw_eh) |
6625cdb5 JM |
4973 | { |
4974 | if (! identified) | |
4975 | { | |
4976 | if (decl) | |
4977 | cp_pedwarn ("jump to label `%D'", decl); | |
4978 | else | |
4979 | pedwarn ("jump to case label"); | |
4980 | ||
4981 | if (file) | |
4982 | pedwarn_with_file_and_line (file, line, " from here"); | |
4983 | identified = 1; | |
4984 | } | |
826840d9 RH |
4985 | if (b->is_try_scope) |
4986 | error (" enters try block"); | |
4987 | else | |
4988 | error (" enters catch block"); | |
6625cdb5 JM |
4989 | saw_eh = 1; |
4990 | } | |
4991 | } | |
4992 | } | |
4993 | ||
4994 | static void | |
4995 | check_previous_goto (use) | |
4996 | struct named_label_use_list *use; | |
4997 | { | |
4998 | check_previous_goto_1 (use->label_decl, use->binding_level, | |
4999 | use->names_in_scope, use->filename_o_goto, | |
5000 | use->lineno_o_goto); | |
5001 | } | |
5002 | ||
5003 | static void | |
5004 | check_switch_goto (level) | |
5005 | struct binding_level *level; | |
5006 | { | |
5007 | check_previous_goto_1 (NULL_TREE, level, level->names, NULL, 0); | |
5008 | } | |
5009 | ||
5010 | /* Check that any previously seen jumps to a newly defined label DECL | |
5011 | are OK. Called by define_label. */ | |
5012 | ||
5013 | static void | |
5014 | check_previous_gotos (decl) | |
5015 | tree decl; | |
5016 | { | |
5017 | struct named_label_use_list **usep; | |
5018 | ||
5019 | if (! TREE_USED (decl)) | |
5020 | return; | |
5021 | ||
5022 | for (usep = &named_label_uses; *usep; ) | |
5023 | { | |
5024 | struct named_label_use_list *use = *usep; | |
5025 | if (use->label_decl == decl) | |
5026 | { | |
5027 | check_previous_goto (use); | |
5028 | *usep = use->next; | |
5029 | } | |
5030 | else | |
5031 | usep = &(use->next); | |
5032 | } | |
5033 | } | |
5034 | ||
5035 | /* Check that a new jump to a label DECL is OK. Called by | |
5036 | finish_goto_stmt. */ | |
5037 | ||
5038 | void | |
5039 | check_goto (decl) | |
5040 | tree decl; | |
5041 | { | |
5042 | int identified = 0; | |
5043 | tree bad; | |
5044 | struct named_label_list *lab; | |
5045 | ||
e3cd9945 APB |
5046 | /* We can't know where a computed goto is jumping. So we assume |
5047 | that it's OK. */ | |
5048 | if (! DECL_P (decl)) | |
5049 | return; | |
5050 | ||
6625cdb5 JM |
5051 | /* If the label hasn't been defined yet, defer checking. */ |
5052 | if (! DECL_INITIAL (decl)) | |
5053 | { | |
5054 | use_label (decl); | |
5055 | return; | |
5056 | } | |
5057 | ||
5058 | for (lab = named_labels; lab; lab = lab->next) | |
5059 | if (decl == lab->label_decl) | |
5060 | break; | |
5061 | ||
5062 | /* If the label is not on named_labels it's a gcc local label, so | |
5063 | it must be in an outer scope, so jumping to it is always OK. */ | |
5064 | if (lab == 0) | |
5065 | return; | |
5066 | ||
826840d9 RH |
5067 | if ((lab->in_try_scope || lab->in_catch_scope || lab->bad_decls) |
5068 | && !identified) | |
6625cdb5 JM |
5069 | { |
5070 | cp_pedwarn_at ("jump to label `%D'", decl); | |
5071 | pedwarn (" from here"); | |
5072 | identified = 1; | |
5073 | } | |
5074 | ||
5075 | for (bad = lab->bad_decls; bad; bad = TREE_CHAIN (bad)) | |
5076 | { | |
5077 | tree b = TREE_VALUE (bad); | |
5078 | int u = decl_jump_unsafe (b); | |
5079 | ||
5080 | if (u > 1 && DECL_ARTIFICIAL (b)) | |
5081 | /* Can't skip init of __exception_info. */ | |
5082 | cp_error_at (" enters catch block", b); | |
5083 | else if (u > 1) | |
5084 | cp_error_at (" skips initialization of `%#D'", b); | |
5085 | else | |
5086 | cp_pedwarn_at (" enters scope of non-POD `%#D'", b); | |
5087 | } | |
5088 | ||
826840d9 | 5089 | if (lab->in_try_scope) |
6625cdb5 | 5090 | error (" enters try block"); |
826840d9 RH |
5091 | else if (lab->in_catch_scope) |
5092 | error (" enters catch block"); | |
6625cdb5 JM |
5093 | } |
5094 | ||
8d08fdba MS |
5095 | /* Define a label, specifying the location in the source file. |
5096 | Return the LABEL_DECL node for the label, if the definition is valid. | |
5097 | Otherwise return 0. */ | |
5098 | ||
5099 | tree | |
5100 | define_label (filename, line, name) | |
3b304f5b | 5101 | const char *filename; |
8d08fdba MS |
5102 | int line; |
5103 | tree name; | |
5104 | { | |
f01b0acb | 5105 | tree decl = lookup_label (name); |
6625cdb5 | 5106 | struct named_label_list *ent; |
3dc9aec6 | 5107 | register struct binding_level *p; |
6625cdb5 JM |
5108 | |
5109 | for (ent = named_labels; ent; ent = ent->next) | |
5110 | if (ent->label_decl == decl) | |
5111 | break; | |
8d08fdba | 5112 | |
3dc9aec6 | 5113 | /* After labels, make any new cleanups in the function go into their |
8d08fdba | 5114 | own new (temporary) binding contour. */ |
3dc9aec6 WC |
5115 | for (p = current_binding_level; !(p->parm_flag); p = p->level_chain) |
5116 | p->more_cleanups_ok = 0; | |
8d08fdba | 5117 | |
e1cd6e56 | 5118 | if (name == get_identifier ("wchar_t")) |
8251199e | 5119 | cp_pedwarn ("label named wchar_t"); |
e1cd6e56 | 5120 | |
8d08fdba MS |
5121 | if (DECL_INITIAL (decl) != NULL_TREE) |
5122 | { | |
8251199e | 5123 | cp_error ("duplicate label `%D'", decl); |
8d08fdba MS |
5124 | return 0; |
5125 | } | |
5126 | else | |
5127 | { | |
8d08fdba MS |
5128 | /* Mark label as having been defined. */ |
5129 | DECL_INITIAL (decl) = error_mark_node; | |
5130 | /* Say where in the source. */ | |
5131 | DECL_SOURCE_FILE (decl) = filename; | |
5132 | DECL_SOURCE_LINE (decl) = line; | |
6625cdb5 JM |
5133 | if (ent) |
5134 | { | |
5135 | ent->names_in_scope = current_binding_level->names; | |
5136 | ent->binding_level = current_binding_level; | |
5137 | } | |
5138 | check_previous_gotos (decl); | |
8d08fdba MS |
5139 | current_function_return_value = NULL_TREE; |
5140 | return decl; | |
5141 | } | |
5142 | } | |
5143 | ||
a5894242 MS |
5144 | struct cp_switch |
5145 | { | |
5146 | struct binding_level *level; | |
5147 | struct cp_switch *next; | |
56cb9733 MM |
5148 | /* The SWITCH_STMT being built. */ |
5149 | tree switch_stmt; | |
5150 | /* A splay-tree mapping the low element of a case range to the high | |
5151 | element, or NULL_TREE if there is no high element. Used to | |
5152 | determine whether or not a new case label duplicates an old case | |
5153 | label. We need a tree, rather than simply a hash table, because | |
5154 | of the GNU case range extension. */ | |
5155 | splay_tree cases; | |
a5894242 MS |
5156 | }; |
5157 | ||
56cb9733 MM |
5158 | /* A stack of the currently active switch statements. The innermost |
5159 | switch statement is on the top of the stack. There is no need to | |
5160 | mark the stack for garbage collection because it is only active | |
5161 | during the processing of the body of a function, and we never | |
5162 | collect at that point. */ | |
5362b086 | 5163 | |
a5894242 MS |
5164 | static struct cp_switch *switch_stack; |
5165 | ||
56cb9733 MM |
5166 | /* Called right after a switch-statement condition is parsed. |
5167 | SWITCH_STMT is the switch statement being parsed. */ | |
5168 | ||
a5894242 | 5169 | void |
56cb9733 MM |
5170 | push_switch (switch_stmt) |
5171 | tree switch_stmt; | |
a5894242 MS |
5172 | { |
5173 | struct cp_switch *p | |
bedda2da | 5174 | = (struct cp_switch *) xmalloc (sizeof (struct cp_switch)); |
a5894242 MS |
5175 | p->level = current_binding_level; |
5176 | p->next = switch_stack; | |
56cb9733 MM |
5177 | p->switch_stmt = switch_stmt; |
5178 | p->cases = splay_tree_new (case_compare, NULL, NULL); | |
a5894242 MS |
5179 | switch_stack = p; |
5180 | } | |
5181 | ||
5182 | void | |
5183 | pop_switch () | |
5184 | { | |
bedda2da | 5185 | struct cp_switch *cs; |
5362b086 | 5186 | |
bedda2da | 5187 | cs = switch_stack; |
56cb9733 | 5188 | splay_tree_delete (cs->cases); |
a5894242 | 5189 | switch_stack = switch_stack->next; |
bedda2da | 5190 | free (cs); |
a5894242 MS |
5191 | } |
5192 | ||
b0a1da19 JM |
5193 | /* Note that we've seen a definition of a case label, and complain if this |
5194 | is a bad place for one. */ | |
e92cc029 | 5195 | |
3e4d04a1 | 5196 | tree |
56cb9733 MM |
5197 | finish_case_label (low_value, high_value) |
5198 | tree low_value; | |
5199 | tree high_value; | |
8d08fdba | 5200 | { |
3e4d04a1 | 5201 | tree cond, r; |
3dc9aec6 | 5202 | register struct binding_level *p; |
a5894242 | 5203 | |
b0a1da19 | 5204 | if (! switch_stack) |
56cb9733 MM |
5205 | { |
5206 | if (high_value) | |
5207 | error ("case label not within a switch statement"); | |
5208 | else if (low_value) | |
5362b086 | 5209 | cp_error ("case label `%E' not within a switch statement", |
56cb9733 MM |
5210 | low_value); |
5211 | else | |
5212 | error ("`default' label not within a switch statement"); | |
3e4d04a1 | 5213 | return NULL_TREE; |
56cb9733 MM |
5214 | } |
5215 | ||
56cb9733 MM |
5216 | if (processing_template_decl) |
5217 | { | |
8f17b5c5 MM |
5218 | tree label; |
5219 | ||
56cb9733 MM |
5220 | /* For templates, just add the case label; we'll do semantic |
5221 | analysis at instantiation-time. */ | |
8f17b5c5 | 5222 | label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); |
3e4d04a1 | 5223 | return add_stmt (build_case_label (low_value, high_value, label)); |
56cb9733 MM |
5224 | } |
5225 | ||
5226 | /* Find the condition on which this switch statement depends. */ | |
5227 | cond = SWITCH_COND (switch_stack->switch_stmt); | |
5228 | if (cond && TREE_CODE (cond) == TREE_LIST) | |
5229 | cond = TREE_VALUE (cond); | |
56cb9733 | 5230 | |
3e4d04a1 RH |
5231 | r = c_add_case_label (switch_stack->cases, cond, low_value, high_value); |
5232 | if (r == error_mark_node) | |
5233 | r = NULL_TREE; | |
8d08fdba | 5234 | |
6625cdb5 | 5235 | check_switch_goto (switch_stack->level); |
a5894242 | 5236 | |
3dc9aec6 | 5237 | /* After labels, make any new cleanups in the function go into their |
8d08fdba | 5238 | own new (temporary) binding contour. */ |
3dc9aec6 WC |
5239 | for (p = current_binding_level; !(p->parm_flag); p = p->level_chain) |
5240 | p->more_cleanups_ok = 0; | |
8d08fdba | 5241 | current_function_return_value = NULL_TREE; |
3e4d04a1 RH |
5242 | |
5243 | return r; | |
8d08fdba MS |
5244 | } |
5245 | \f | |
5246 | /* Return the list of declarations of the current level. | |
5247 | Note that this list is in reverse order unless/until | |
5248 | you nreverse it; and when you do nreverse it, you must | |
5249 | store the result back using `storedecls' or you will lose. */ | |
5250 | ||
5251 | tree | |
5252 | getdecls () | |
5253 | { | |
5254 | return current_binding_level->names; | |
5255 | } | |
5256 | ||
5257 | /* Return the list of type-tags (for structs, etc) of the current level. */ | |
5258 | ||
5259 | tree | |
5260 | gettags () | |
5261 | { | |
5262 | return current_binding_level->tags; | |
5263 | } | |
5264 | ||
5265 | /* Store the list of declarations of the current level. | |
5266 | This is done for the parameter declarations of a function being defined, | |
5267 | after they are modified in the light of any missing parameters. */ | |
5268 | ||
5269 | static void | |
5270 | storedecls (decls) | |
5271 | tree decls; | |
5272 | { | |
5273 | current_binding_level->names = decls; | |
5274 | } | |
5275 | ||
5276 | /* Similarly, store the list of tags of the current level. */ | |
5277 | ||
280f9385 | 5278 | void |
8d08fdba MS |
5279 | storetags (tags) |
5280 | tree tags; | |
5281 | { | |
5282 | current_binding_level->tags = tags; | |
5283 | } | |
5284 | \f | |
5285 | /* Given NAME, an IDENTIFIER_NODE, | |
5286 | return the structure (or union or enum) definition for that name. | |
5287 | Searches binding levels from BINDING_LEVEL up to the global level. | |
5288 | If THISLEVEL_ONLY is nonzero, searches only the specified context | |
5289 | (but skips any tag-transparent contexts to find one that is | |
5290 | meaningful for tags). | |
5291 | FORM says which kind of type the caller wants; | |
5292 | it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE. | |
5293 | If the wrong kind of type is found, and it's not a template, an error is | |
5294 | reported. */ | |
5295 | ||
5296 | static tree | |
5297 | lookup_tag (form, name, binding_level, thislevel_only) | |
5298 | enum tree_code form; | |
8d08fdba | 5299 | tree name; |
cffa8729 | 5300 | struct binding_level *binding_level; |
8d08fdba MS |
5301 | int thislevel_only; |
5302 | { | |
5303 | register struct binding_level *level; | |
74b846e0 MM |
5304 | /* Non-zero if, we should look past a template parameter level, even |
5305 | if THISLEVEL_ONLY. */ | |
5306 | int allow_template_parms_p = 1; | |
8d08fdba MS |
5307 | |
5308 | for (level = binding_level; level; level = level->level_chain) | |
5309 | { | |
5310 | register tree tail; | |
5311 | if (ANON_AGGRNAME_P (name)) | |
5312 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
5313 | { | |
5314 | /* There's no need for error checking here, because | |
5315 | anon names are unique throughout the compilation. */ | |
5316 | if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name) | |
5317 | return TREE_VALUE (tail); | |
5318 | } | |
2c73f9f5 ML |
5319 | else if (level->namespace_p) |
5320 | /* Do namespace lookup. */ | |
6c011b01 | 5321 | for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail)) |
2c73f9f5 | 5322 | { |
36a117a5 MM |
5323 | tree old = binding_for_name (name, tail); |
5324 | ||
74b846e0 MM |
5325 | /* If we just skipped past a template parameter level, |
5326 | even though THISLEVEL_ONLY, and we find a template | |
5327 | class declaration, then we use the _TYPE node for the | |
36a117a5 | 5328 | template. See the example below. */ |
74b846e0 | 5329 | if (thislevel_only && !allow_template_parms_p |
68642fb6 | 5330 | && old && BINDING_VALUE (old) |
36a117a5 MM |
5331 | && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old))) |
5332 | old = TREE_TYPE (BINDING_VALUE (old)); | |
68642fb6 | 5333 | else |
36a117a5 MM |
5334 | old = BINDING_TYPE (old); |
5335 | ||
2c73f9f5 ML |
5336 | /* If it has an original type, it is a typedef, and we |
5337 | should not return it. */ | |
5338 | if (old && DECL_ORIGINAL_TYPE (TYPE_NAME (old))) | |
5339 | old = NULL_TREE; | |
5340 | if (old && TREE_CODE (old) != form | |
5341 | && !(form != ENUMERAL_TYPE && TREE_CODE (old) == TEMPLATE_DECL)) | |
5342 | { | |
8251199e | 5343 | cp_error ("`%#D' redeclared as %C", old, form); |
2c73f9f5 ML |
5344 | return NULL_TREE; |
5345 | } | |
5346 | if (old) | |
5347 | return old; | |
5348 | if (thislevel_only || tail == global_namespace) | |
5349 | return NULL_TREE; | |
5350 | } | |
8d08fdba MS |
5351 | else |
5352 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
5353 | { | |
a80e4195 | 5354 | if (TREE_PURPOSE (tail) == name) |
8d08fdba MS |
5355 | { |
5356 | enum tree_code code = TREE_CODE (TREE_VALUE (tail)); | |
5357 | /* Should tighten this up; it'll probably permit | |
5358 | UNION_TYPE and a struct template, for example. */ | |
5359 | if (code != form | |
5566b478 | 5360 | && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL)) |
8d08fdba MS |
5361 | { |
5362 | /* Definition isn't the kind we were looking for. */ | |
8251199e | 5363 | cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail), |
8d08fdba | 5364 | form); |
72b7eeff | 5365 | return NULL_TREE; |
8d08fdba MS |
5366 | } |
5367 | return TREE_VALUE (tail); | |
5368 | } | |
5369 | } | |
5370 | if (thislevel_only && ! level->tag_transparent) | |
5566b478 | 5371 | { |
74b846e0 | 5372 | if (level->template_parms_p && allow_template_parms_p) |
5566b478 | 5373 | { |
36a117a5 | 5374 | /* We must deal with cases like this: |
68642fb6 | 5375 | |
36a117a5 MM |
5376 | template <class T> struct S; |
5377 | template <class T> struct S {}; | |
68642fb6 | 5378 | |
36a117a5 MM |
5379 | When looking up `S', for the second declaration, we |
5380 | would like to find the first declaration. But, we | |
5381 | are in the pseudo-global level created for the | |
5382 | template parameters, rather than the (surrounding) | |
5383 | namespace level. Thus, we keep going one more level, | |
5384 | even though THISLEVEL_ONLY is non-zero. */ | |
74b846e0 | 5385 | allow_template_parms_p = 0; |
36a117a5 | 5386 | continue; |
5566b478 | 5387 | } |
36a117a5 MM |
5388 | else |
5389 | return NULL_TREE; | |
5566b478 | 5390 | } |
8d08fdba MS |
5391 | } |
5392 | return NULL_TREE; | |
5393 | } | |
5394 | ||
bd6dd845 | 5395 | #if 0 |
8d08fdba MS |
5396 | void |
5397 | set_current_level_tags_transparency (tags_transparent) | |
5398 | int tags_transparent; | |
5399 | { | |
5400 | current_binding_level->tag_transparent = tags_transparent; | |
5401 | } | |
bd6dd845 | 5402 | #endif |
8d08fdba MS |
5403 | |
5404 | /* Given a type, find the tag that was defined for it and return the tag name. | |
5405 | Otherwise return 0. However, the value can never be 0 | |
5406 | in the cases in which this is used. | |
5407 | ||
5408 | C++: If NAME is non-zero, this is the new name to install. This is | |
5409 | done when replacing anonymous tags with real tag names. */ | |
5410 | ||
5411 | static tree | |
5412 | lookup_tag_reverse (type, name) | |
5413 | tree type; | |
5414 | tree name; | |
5415 | { | |
5416 | register struct binding_level *level; | |
5417 | ||
5418 | for (level = current_binding_level; level; level = level->level_chain) | |
5419 | { | |
5420 | register tree tail; | |
5421 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
5422 | { | |
5423 | if (TREE_VALUE (tail) == type) | |
5424 | { | |
5425 | if (name) | |
5426 | TREE_PURPOSE (tail) = name; | |
5427 | return TREE_PURPOSE (tail); | |
5428 | } | |
5429 | } | |
5430 | } | |
5431 | return NULL_TREE; | |
5432 | } | |
8d08fdba | 5433 | \f |
a9aedbc2 | 5434 | /* Look up NAME in the NAMESPACE. */ |
e92cc029 | 5435 | |
a9aedbc2 MS |
5436 | tree |
5437 | lookup_namespace_name (namespace, name) | |
5438 | tree namespace, name; | |
5439 | { | |
30394414 | 5440 | tree val; |
f30c84c9 | 5441 | tree template_id = NULL_TREE; |
2c73f9f5 | 5442 | |
30394414 | 5443 | my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370); |
1231fb96 | 5444 | |
1231fb96 | 5445 | if (TREE_CODE (name) == NAMESPACE_DECL) |
d8f8dca1 | 5446 | /* This happens for A::B<int> when B is a namespace. */ |
1231fb96 | 5447 | return name; |
d8f8dca1 MM |
5448 | else if (TREE_CODE (name) == TEMPLATE_DECL) |
5449 | { | |
5450 | /* This happens for A::B where B is a template, and there are no | |
5451 | template arguments. */ | |
5452 | cp_error ("invalid use of `%D'", name); | |
5453 | return error_mark_node; | |
5454 | } | |
1231fb96 | 5455 | |
b262d64c JM |
5456 | namespace = ORIGINAL_NAMESPACE (namespace); |
5457 | ||
f30c84c9 MM |
5458 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) |
5459 | { | |
5460 | template_id = name; | |
5461 | name = TREE_OPERAND (name, 0); | |
5462 | if (TREE_CODE (name) == OVERLOAD) | |
5463 | name = DECL_NAME (OVL_CURRENT (name)); | |
2f939d94 | 5464 | else if (DECL_P (name)) |
f30c84c9 MM |
5465 | name = DECL_NAME (name); |
5466 | } | |
5467 | ||
30394414 | 5468 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373); |
68642fb6 | 5469 | |
87e3dbc9 | 5470 | val = make_node (CPLUS_BINDING); |
52c11ef6 | 5471 | if (!qualified_lookup_using_namespace (name, namespace, val, 0)) |
2c73f9f5 ML |
5472 | return error_mark_node; |
5473 | ||
5474 | if (BINDING_VALUE (val)) | |
1c35f5b6 JM |
5475 | { |
5476 | val = BINDING_VALUE (val); | |
5477 | ||
f30c84c9 MM |
5478 | if (template_id) |
5479 | { | |
5480 | if (DECL_CLASS_TEMPLATE_P (val)) | |
68642fb6 | 5481 | val = lookup_template_class (val, |
f30c84c9 MM |
5482 | TREE_OPERAND (template_id, 1), |
5483 | /*in_decl=*/NULL_TREE, | |
5484 | /*context=*/NULL_TREE, | |
f9c244b8 NS |
5485 | /*entering_scope=*/0, |
5486 | /*complain=*/1); | |
f30c84c9 MM |
5487 | else if (DECL_FUNCTION_TEMPLATE_P (val) |
5488 | || TREE_CODE (val) == OVERLOAD) | |
68642fb6 | 5489 | val = lookup_template_function (val, |
f30c84c9 MM |
5490 | TREE_OPERAND (template_id, 1)); |
5491 | else | |
5492 | { | |
5493 | cp_error ("`%D::%D' is not a template", | |
5494 | namespace, name); | |
5495 | return error_mark_node; | |
5496 | } | |
5497 | } | |
5498 | ||
1c35f5b6 JM |
5499 | /* If we have a single function from a using decl, pull it out. */ |
5500 | if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val)) | |
5501 | val = OVL_FUNCTION (val); | |
5502 | return val; | |
5503 | } | |
5504 | ||
8251199e | 5505 | cp_error ("`%D' undeclared in namespace `%D'", name, namespace); |
30394414 | 5506 | return error_mark_node; |
a9aedbc2 MS |
5507 | } |
5508 | ||
7ddedda4 MM |
5509 | /* Hash a TYPENAME_TYPE. K is really of type `tree'. */ |
5510 | ||
5511 | static unsigned long | |
5512 | typename_hash (k) | |
5513 | hash_table_key k; | |
5514 | { | |
5515 | unsigned long hash; | |
5516 | tree t; | |
5517 | ||
5518 | t = (tree) k; | |
5519 | hash = (((unsigned long) TYPE_CONTEXT (t)) | |
5520 | ^ ((unsigned long) DECL_NAME (TYPE_NAME (t)))); | |
5521 | ||
5522 | return hash; | |
5523 | } | |
5524 | ||
5525 | /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */ | |
5526 | ||
d6edb99e | 5527 | static bool |
7ddedda4 MM |
5528 | typename_compare (k1, k2) |
5529 | hash_table_key k1; | |
5530 | hash_table_key k2; | |
5531 | { | |
5532 | tree t1; | |
5533 | tree t2; | |
5534 | tree d1; | |
5535 | tree d2; | |
5536 | ||
5537 | t1 = (tree) k1; | |
5538 | t2 = (tree) k2; | |
5539 | d1 = TYPE_NAME (t1); | |
5540 | d2 = TYPE_NAME (t2); | |
68642fb6 | 5541 | |
7ddedda4 MM |
5542 | return (DECL_NAME (d1) == DECL_NAME (d2) |
5543 | && same_type_p (TYPE_CONTEXT (t1), TYPE_CONTEXT (t2)) | |
68642fb6 | 5544 | && ((TREE_TYPE (t1) != NULL_TREE) |
7ddedda4 MM |
5545 | == (TREE_TYPE (t2) != NULL_TREE)) |
5546 | && same_type_p (TREE_TYPE (t1), TREE_TYPE (t2)) | |
5547 | && TYPENAME_TYPE_FULLNAME (t1) == TYPENAME_TYPE_FULLNAME (t2)); | |
5548 | } | |
5549 | ||
45869a6c MM |
5550 | /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is |
5551 | the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE | |
5552 | is non-NULL, this type is being created by the implicit typename | |
5553 | extension, and BASE_TYPE is a type named `t' in some base class of | |
68642fb6 | 5554 | `T' which depends on template parameters. |
45869a6c MM |
5555 | |
5556 | Returns the new TYPENAME_TYPE. */ | |
5557 | ||
5558 | tree | |
5559 | build_typename_type (context, name, fullname, base_type) | |
5560 | tree context; | |
5561 | tree name; | |
5562 | tree fullname; | |
5563 | tree base_type; | |
5564 | { | |
5565 | tree t; | |
5566 | tree d; | |
400500c4 | 5567 | struct hash_entry *e; |
45869a6c | 5568 | |
7ddedda4 MM |
5569 | static struct hash_table ht; |
5570 | ||
9cd64686 MM |
5571 | if (!ht.table) |
5572 | { | |
5573 | static struct hash_table *h = &ht; | |
400500c4 RK |
5574 | |
5575 | hash_table_init (&ht, &hash_newfunc, &typename_hash, &typename_compare); | |
9cd64686 MM |
5576 | ggc_add_tree_hash_table_root (&h, 1); |
5577 | } | |
45869a6c MM |
5578 | |
5579 | /* Build the TYPENAME_TYPE. */ | |
33848bb0 | 5580 | t = make_aggr_type (TYPENAME_TYPE); |
45869a6c MM |
5581 | TYPE_CONTEXT (t) = FROB_CONTEXT (context); |
5582 | TYPENAME_TYPE_FULLNAME (t) = fullname; | |
5583 | TREE_TYPE (t) = base_type; | |
45869a6c MM |
5584 | |
5585 | /* Build the corresponding TYPE_DECL. */ | |
5586 | d = build_decl (TYPE_DECL, name, t); | |
5587 | TYPE_NAME (TREE_TYPE (d)) = d; | |
5588 | TYPE_STUB_DECL (TREE_TYPE (d)) = d; | |
5589 | DECL_CONTEXT (d) = FROB_CONTEXT (context); | |
2642b9bf | 5590 | DECL_ARTIFICIAL (d) = 1; |
45869a6c | 5591 | |
7ddedda4 MM |
5592 | /* See if we already have this type. */ |
5593 | e = hash_lookup (&ht, t, /*create=*/false, /*copy=*/0); | |
5594 | if (e) | |
87e3dbc9 | 5595 | t = (tree) e->key; |
7ddedda4 MM |
5596 | else |
5597 | /* Insert the type into the table. */ | |
5598 | hash_lookup (&ht, t, /*create=*/true, /*copy=*/0); | |
5599 | ||
45869a6c MM |
5600 | return t; |
5601 | } | |
5602 | ||
3baa501d MM |
5603 | /* Resolve `typename CONTEXT::NAME'. Returns an appropriate type, |
5604 | unless an error occurs, in which case error_mark_node is returned. | |
5605 | If COMPLAIN zero, don't complain about any errors that occur. */ | |
5606 | ||
5566b478 | 5607 | tree |
3baa501d | 5608 | make_typename_type (context, name, complain) |
5566b478 | 5609 | tree context, name; |
3baa501d | 5610 | int complain; |
5566b478 | 5611 | { |
b2b7d40a | 5612 | tree fullname; |
a80e4195 | 5613 | |
2f939d94 | 5614 | if (TYPE_P (name)) |
78638e24 | 5615 | { |
68642fb6 UD |
5616 | if (!(TYPE_LANG_SPECIFIC (name) |
5617 | && (CLASSTYPE_IS_TEMPLATE (name) | |
78638e24 MM |
5618 | || CLASSTYPE_USE_TEMPLATE (name)))) |
5619 | name = TYPE_IDENTIFIER (name); | |
5620 | else | |
5621 | /* Create a TEMPLATE_ID_EXPR for the type. */ | |
5622 | name = build_nt (TEMPLATE_ID_EXPR, | |
5623 | CLASSTYPE_TI_TEMPLATE (name), | |
5624 | CLASSTYPE_TI_ARGS (name)); | |
5625 | } | |
653cc74a | 5626 | else if (TREE_CODE (name) == TYPE_DECL) |
a80e4195 | 5627 | name = DECL_NAME (name); |
b2b7d40a JM |
5628 | |
5629 | fullname = name; | |
5630 | ||
5631 | if (TREE_CODE (name) == TEMPLATE_ID_EXPR) | |
11686454 JM |
5632 | { |
5633 | name = TREE_OPERAND (name, 0); | |
5634 | if (TREE_CODE (name) == TEMPLATE_DECL) | |
5635 | name = TREE_OPERAND (fullname, 0) = DECL_NAME (name); | |
5636 | } | |
b2b7d40a | 5637 | if (TREE_CODE (name) != IDENTIFIER_NODE) |
a80e4195 | 5638 | my_friendly_abort (2000); |
5566b478 | 5639 | |
04ddee1b BK |
5640 | if (TREE_CODE (context) == NAMESPACE_DECL) |
5641 | { | |
5642 | /* We can get here from typename_sub0 in the explicit_template_type | |
5643 | expansion. Just fail. */ | |
3baa501d MM |
5644 | if (complain) |
5645 | cp_error ("no class template named `%#T' in `%#T'", | |
5646 | name, context); | |
04ddee1b BK |
5647 | return error_mark_node; |
5648 | } | |
5649 | ||
85b71cf2 | 5650 | if (! uses_template_parms (context) |
b77ead33 | 5651 | || currently_open_class (context)) |
5566b478 | 5652 | { |
b2b7d40a JM |
5653 | if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR) |
5654 | { | |
ad810b22 | 5655 | tree tmpl = NULL_TREE; |
b2b7d40a | 5656 | if (IS_AGGR_TYPE (context)) |
ad810b22 MM |
5657 | tmpl = lookup_field (context, name, 0, 0); |
5658 | if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl)) | |
b2b7d40a | 5659 | { |
3baa501d MM |
5660 | if (complain) |
5661 | cp_error ("no class template named `%#T' in `%#T'", | |
5662 | name, context); | |
b2b7d40a JM |
5663 | return error_mark_node; |
5664 | } | |
ffb690bd | 5665 | |
68642fb6 | 5666 | return lookup_template_class (tmpl, |
ad810b22 | 5667 | TREE_OPERAND (fullname, 1), |
68642fb6 | 5668 | NULL_TREE, context, |
f9c244b8 NS |
5669 | /*entering_scope=*/0, |
5670 | /*complain=*/1); | |
b2b7d40a JM |
5671 | } |
5672 | else | |
5566b478 | 5673 | { |
b4f70b3d | 5674 | tree t; |
68642fb6 | 5675 | |
b4f70b3d | 5676 | if (!IS_AGGR_TYPE (context)) |
b2b7d40a | 5677 | { |
3baa501d MM |
5678 | if (complain) |
5679 | cp_error ("no type named `%#T' in `%#T'", name, context); | |
b2b7d40a JM |
5680 | return error_mark_node; |
5681 | } | |
1107c4b3 | 5682 | |
b4f70b3d | 5683 | t = lookup_field (context, name, 0, 1); |
7d4bdeed MM |
5684 | if (t) |
5685 | return TREE_TYPE (t); | |
5566b478 | 5686 | } |
5566b478 | 5687 | } |
11249cf0 MM |
5688 | |
5689 | /* If the CONTEXT is not a template type, then either the field is | |
5690 | there now or its never going to be. */ | |
b4f70b3d | 5691 | if (!uses_template_parms (context)) |
11249cf0 | 5692 | { |
3baa501d MM |
5693 | if (complain) |
5694 | cp_error ("no type named `%#T' in `%#T'", name, context); | |
11249cf0 MM |
5695 | return error_mark_node; |
5696 | } | |
68642fb6 UD |
5697 | |
5698 | ||
45869a6c | 5699 | return build_typename_type (context, name, fullname, NULL_TREE); |
5566b478 MS |
5700 | } |
5701 | ||
2c73f9f5 ML |
5702 | /* Select the right _DECL from multiple choices. */ |
5703 | ||
5704 | static tree | |
52c11ef6 | 5705 | select_decl (binding, flags) |
2c73f9f5 | 5706 | tree binding; |
52c11ef6 | 5707 | int flags; |
2c73f9f5 ML |
5708 | { |
5709 | tree val; | |
5710 | val = BINDING_VALUE (binding); | |
97ba1e3c MM |
5711 | |
5712 | /* When we implicitly declare some builtin entity, we mark it | |
5713 | DECL_ANTICIPATED, so that we know to ignore it until it is | |
5714 | really declared. */ | |
5362b086 EC |
5715 | if (val && DECL_P (val) |
5716 | && DECL_LANG_SPECIFIC (val) | |
97ba1e3c MM |
5717 | && DECL_ANTICIPATED (val)) |
5718 | return NULL_TREE; | |
5719 | ||
52c11ef6 | 5720 | if (LOOKUP_NAMESPACES_ONLY (flags)) |
3e3f722c ML |
5721 | { |
5722 | /* We are not interested in types. */ | |
5723 | if (val && TREE_CODE (val) == NAMESPACE_DECL) | |
5724 | return val; | |
5725 | return NULL_TREE; | |
5726 | } | |
68642fb6 | 5727 | |
2c73f9f5 ML |
5728 | /* If we could have a type and |
5729 | we have nothing or we need a type and have none. */ | |
5730 | if (BINDING_TYPE (binding) | |
52c11ef6 JM |
5731 | && (!val || ((flags & LOOKUP_PREFER_TYPES) |
5732 | && TREE_CODE (val) != TYPE_DECL))) | |
2c73f9f5 ML |
5733 | val = TYPE_STUB_DECL (BINDING_TYPE (binding)); |
5734 | /* Don't return non-types if we really prefer types. */ | |
52c11ef6 | 5735 | else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL |
c592d5d2 ML |
5736 | && (TREE_CODE (val) != TEMPLATE_DECL |
5737 | || !DECL_CLASS_TEMPLATE_P (val))) | |
2c73f9f5 | 5738 | val = NULL_TREE; |
1c35f5b6 | 5739 | |
2c73f9f5 ML |
5740 | return val; |
5741 | } | |
5742 | ||
2c169bab JM |
5743 | /* Unscoped lookup of a global: iterate over current namespaces, |
5744 | considering using-directives. If SPACESP is non-NULL, store a list | |
5745 | of the namespaces we've considered in it. */ | |
ea9635c7 | 5746 | |
2c169bab JM |
5747 | tree |
5748 | unqualified_namespace_lookup (name, flags, spacesp) | |
ea9635c7 | 5749 | tree name; |
52c11ef6 | 5750 | int flags; |
2c169bab | 5751 | tree *spacesp; |
ea9635c7 | 5752 | { |
87e3dbc9 | 5753 | tree b = make_node (CPLUS_BINDING); |
ee8fc32b | 5754 | tree initial = current_decl_namespace (); |
ea9635c7 ML |
5755 | tree scope = initial; |
5756 | tree siter; | |
5757 | struct binding_level *level; | |
5758 | tree val = NULL_TREE; | |
5759 | ||
2c169bab JM |
5760 | if (spacesp) |
5761 | *spacesp = NULL_TREE; | |
5762 | ||
5763 | for (; !val; scope = CP_DECL_CONTEXT (scope)) | |
ea9635c7 | 5764 | { |
2c169bab | 5765 | if (spacesp) |
e1b3e07d | 5766 | *spacesp = tree_cons (scope, NULL_TREE, *spacesp); |
ea9635c7 ML |
5767 | val = binding_for_name (name, scope); |
5768 | ||
5769 | /* Initialize binding for this context. */ | |
5770 | BINDING_VALUE (b) = BINDING_VALUE (val); | |
5771 | BINDING_TYPE (b) = BINDING_TYPE (val); | |
5772 | ||
5773 | /* Add all _DECLs seen through local using-directives. */ | |
68642fb6 | 5774 | for (level = current_binding_level; |
ea9635c7 ML |
5775 | !level->namespace_p; |
5776 | level = level->level_chain) | |
52c11ef6 | 5777 | if (!lookup_using_namespace (name, b, level->using_directives, |
2c169bab | 5778 | scope, flags, spacesp)) |
ea9635c7 | 5779 | /* Give up because of error. */ |
5b163de4 | 5780 | return error_mark_node; |
ea9635c7 ML |
5781 | |
5782 | /* Add all _DECLs seen through global using-directives. */ | |
5783 | /* XXX local and global using lists should work equally. */ | |
5784 | siter = initial; | |
5785 | while (1) | |
5786 | { | |
68642fb6 | 5787 | if (!lookup_using_namespace (name, b, DECL_NAMESPACE_USING (siter), |
2c169bab | 5788 | scope, flags, spacesp)) |
ea9635c7 | 5789 | /* Give up because of error. */ |
5b163de4 | 5790 | return error_mark_node; |
ea9635c7 ML |
5791 | if (siter == scope) break; |
5792 | siter = CP_DECL_CONTEXT (siter); | |
5793 | } | |
5794 | ||
52c11ef6 | 5795 | val = select_decl (b, flags); |
ea9635c7 ML |
5796 | if (scope == global_namespace) |
5797 | break; | |
ea9635c7 ML |
5798 | } |
5799 | return val; | |
5800 | } | |
5801 | ||
52c11ef6 JM |
5802 | /* Combine prefer_type and namespaces_only into flags. */ |
5803 | ||
5804 | static int | |
5805 | lookup_flags (prefer_type, namespaces_only) | |
5806 | int prefer_type, namespaces_only; | |
5807 | { | |
5808 | if (namespaces_only) | |
5809 | return LOOKUP_PREFER_NAMESPACES; | |
5810 | if (prefer_type > 1) | |
5811 | return LOOKUP_PREFER_TYPES; | |
5812 | if (prefer_type > 0) | |
5813 | return LOOKUP_PREFER_BOTH; | |
5814 | return 0; | |
5815 | } | |
5816 | ||
5817 | /* Given a lookup that returned VAL, use FLAGS to decide if we want to | |
5818 | ignore it or not. Subroutine of lookup_name_real. */ | |
5819 | ||
5820 | static tree | |
5821 | qualify_lookup (val, flags) | |
5822 | tree val; | |
5823 | int flags; | |
5824 | { | |
5825 | if (val == NULL_TREE) | |
5826 | return val; | |
6b945830 JM |
5827 | if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL) |
5828 | return val; | |
5829 | if ((flags & LOOKUP_PREFER_TYPES) | |
5830 | && (TREE_CODE (val) == TYPE_DECL | |
5831 | || ((flags & LOOKUP_TEMPLATES_EXPECTED) | |
5832 | && DECL_CLASS_TEMPLATE_P (val)))) | |
5833 | return val; | |
5834 | if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES)) | |
52c11ef6 JM |
5835 | return NULL_TREE; |
5836 | return val; | |
5837 | } | |
5838 | ||
235f734d MM |
5839 | /* Any other BINDING overrides an implicit TYPENAME. Warn about |
5840 | that. */ | |
5841 | ||
5842 | static void | |
5843 | warn_about_implicit_typename_lookup (typename, binding) | |
5844 | tree typename; | |
5845 | tree binding; | |
5846 | { | |
5847 | tree subtype = TREE_TYPE (TREE_TYPE (typename)); | |
5848 | tree name = DECL_NAME (typename); | |
5849 | ||
5850 | if (! (TREE_CODE (binding) == TEMPLATE_DECL | |
5851 | && CLASSTYPE_TEMPLATE_INFO (subtype) | |
5852 | && CLASSTYPE_TI_TEMPLATE (subtype) == binding) | |
5853 | && ! (TREE_CODE (binding) == TYPE_DECL | |
5854 | && same_type_p (TREE_TYPE (binding), subtype))) | |
5855 | { | |
68642fb6 | 5856 | cp_warning ("lookup of `%D' finds `%#D'", |
235f734d MM |
5857 | name, binding); |
5858 | cp_warning (" instead of `%D' from dependent base class", | |
5859 | typename); | |
5860 | cp_warning (" (use `typename %T::%D' if that's what you meant)", | |
5861 | constructor_name (current_class_type), name); | |
5862 | } | |
5863 | } | |
5864 | ||
8d08fdba MS |
5865 | /* Look up NAME in the current binding level and its superiors in the |
5866 | namespace of variables, functions and typedefs. Return a ..._DECL | |
5867 | node of some kind representing its definition if there is only one | |
5868 | such declaration, or return a TREE_LIST with all the overloaded | |
5869 | definitions if there are many, or return 0 if it is undefined. | |
5870 | ||
2c73f9f5 ML |
5871 | If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces. |
5872 | If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces). | |
a28e3c7f | 5873 | If PREFER_TYPE is -2, we're being called from yylex(). (UGLY) |
68642fb6 | 5874 | Otherwise we prefer non-TYPE_DECLs. |
f84b4be9 JM |
5875 | |
5876 | If NONCLASS is non-zero, we don't look for the NAME in class scope, | |
5877 | using IDENTIFIER_CLASS_VALUE. */ | |
8d08fdba | 5878 | |
824b9a4c | 5879 | static tree |
3e3f722c | 5880 | lookup_name_real (name, prefer_type, nonclass, namespaces_only) |
8d08fdba | 5881 | tree name; |
3e3f722c | 5882 | int prefer_type, nonclass, namespaces_only; |
8d08fdba | 5883 | { |
235f734d MM |
5884 | tree t; |
5885 | tree val = NULL_TREE; | |
a28e3c7f | 5886 | int yylex = 0; |
e1cd6e56 | 5887 | tree from_obj = NULL_TREE; |
52c11ef6 | 5888 | int flags; |
235f734d | 5889 | int val_is_implicit_typename = 0; |
8d08fdba | 5890 | |
3e3f722c ML |
5891 | /* Hack: copy flag set by parser, if set. */ |
5892 | if (only_namespace_names) | |
5893 | namespaces_only = 1; | |
52c11ef6 | 5894 | |
a28e3c7f MS |
5895 | if (prefer_type == -2) |
5896 | { | |
5897 | extern int looking_for_typename; | |
fc378698 | 5898 | tree type = NULL_TREE; |
a28e3c7f MS |
5899 | |
5900 | yylex = 1; | |
5901 | prefer_type = looking_for_typename; | |
e1cd6e56 | 5902 | |
52c11ef6 | 5903 | flags = lookup_flags (prefer_type, namespaces_only); |
52c11ef6 JM |
5904 | /* If the next thing is '<', class templates are types. */ |
5905 | if (looking_for_template) | |
5906 | flags |= LOOKUP_TEMPLATES_EXPECTED; | |
5907 | ||
653cc74a | 5908 | /* std:: becomes :: for now. */ |
6bcedb4e | 5909 | if (got_scope && got_scope == fake_std_node) |
653cc74a JM |
5910 | got_scope = void_type_node; |
5911 | ||
e1cd6e56 MS |
5912 | if (got_scope) |
5913 | type = got_scope; | |
dff6b454 | 5914 | else if (got_object != error_mark_node) |
e1cd6e56 | 5915 | type = got_object; |
68642fb6 | 5916 | |
e1cd6e56 | 5917 | if (type) |
a28e3c7f | 5918 | { |
e1cd6e56 | 5919 | if (type == error_mark_node) |
f376e137 | 5920 | return error_mark_node; |
a80e4195 MS |
5921 | if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type)) |
5922 | type = TREE_TYPE (type); | |
5566b478 | 5923 | |
2b9dc906 JM |
5924 | if (TYPE_P (type)) |
5925 | type = complete_type (type); | |
5566b478 | 5926 | |
a1774733 | 5927 | if (TREE_CODE (type) == VOID_TYPE) |
2c73f9f5 ML |
5928 | type = global_namespace; |
5929 | if (TREE_CODE (type) == NAMESPACE_DECL) | |
a9aedbc2 | 5930 | { |
87e3dbc9 | 5931 | val = make_node (CPLUS_BINDING); |
6ad07332 | 5932 | flags |= LOOKUP_COMPLAIN; |
52c11ef6 | 5933 | if (!qualified_lookup_using_namespace (name, type, val, flags)) |
2c73f9f5 | 5934 | return NULL_TREE; |
52c11ef6 | 5935 | val = select_decl (val, flags); |
a9aedbc2 | 5936 | } |
5566b478 | 5937 | else if (! IS_AGGR_TYPE (type) |
5156628f | 5938 | || TREE_CODE (type) == TEMPLATE_TYPE_PARM |
a1281f45 | 5939 | || TREE_CODE (type) == BOUND_TEMPLATE_TEMPLATE_PARM |
5156628f | 5940 | || TREE_CODE (type) == TYPENAME_TYPE) |
e92cc029 | 5941 | /* Someone else will give an error about this if needed. */ |
a28e3c7f | 5942 | val = NULL_TREE; |
e1cd6e56 | 5943 | else if (type == current_class_type) |
a28e3c7f | 5944 | val = IDENTIFIER_CLASS_VALUE (name); |
a28e3c7f | 5945 | else |
70adf8a9 JM |
5946 | { |
5947 | val = lookup_member (type, name, 0, prefer_type); | |
5948 | type_access_control (type, val); | |
e69c8072 JM |
5949 | |
5950 | /* Restore the containing TYPENAME_TYPE if we looked | |
5951 | through it before. */ | |
5952 | if (got_scope && got_scope != type | |
5953 | && val && TREE_CODE (val) == TYPE_DECL | |
5954 | && TREE_CODE (TREE_TYPE (val)) == TYPENAME_TYPE) | |
5955 | TYPE_CONTEXT (TREE_TYPE (val)) = got_scope; | |
70adf8a9 | 5956 | } |
a28e3c7f | 5957 | } |
e1cd6e56 MS |
5958 | else |
5959 | val = NULL_TREE; | |
5960 | ||
594740f3 | 5961 | if (got_scope) |
e1cd6e56 | 5962 | goto done; |
594740f3 | 5963 | else if (got_object && val) |
aca77bd1 JM |
5964 | { |
5965 | from_obj = val; | |
5966 | val = NULL_TREE; | |
5967 | } | |
a28e3c7f | 5968 | } |
52c11ef6 | 5969 | else |
5b163de4 JM |
5970 | { |
5971 | flags = lookup_flags (prefer_type, namespaces_only); | |
5972 | /* If we're not parsing, we need to complain. */ | |
5973 | flags |= LOOKUP_COMPLAIN; | |
5974 | } | |
e76a2646 | 5975 | |
d8f8dca1 | 5976 | /* First, look in non-namespace scopes. */ |
6f1b4c42 JM |
5977 | |
5978 | if (current_class_type == NULL_TREE) | |
5979 | nonclass = 1; | |
5980 | ||
235f734d | 5981 | for (t = IDENTIFIER_BINDING (name); t; t = TREE_CHAIN (t)) |
d8f8dca1 | 5982 | { |
235f734d MM |
5983 | tree binding; |
5984 | ||
5985 | if (!LOCAL_BINDING_P (t) && nonclass) | |
d8f8dca1 MM |
5986 | /* We're not looking for class-scoped bindings, so keep going. */ |
5987 | continue; | |
68642fb6 | 5988 | |
d8f8dca1 | 5989 | /* If this is the kind of thing we're looking for, we're done. */ |
235f734d MM |
5990 | if (qualify_lookup (BINDING_VALUE (t), flags)) |
5991 | binding = BINDING_VALUE (t); | |
68642fb6 | 5992 | else if ((flags & LOOKUP_PREFER_TYPES) |
235f734d MM |
5993 | && qualify_lookup (BINDING_TYPE (t), flags)) |
5994 | binding = BINDING_TYPE (t); | |
5995 | else | |
5996 | binding = NULL_TREE; | |
5997 | ||
70adf8a9 JM |
5998 | /* Handle access control on types from enclosing or base classes. */ |
5999 | if (binding && ! yylex | |
6000 | && BINDING_LEVEL (t) && BINDING_LEVEL (t)->parm_flag == 2) | |
6001 | type_access_control (BINDING_LEVEL (t)->this_class, binding); | |
6002 | ||
235f734d | 6003 | if (binding |
83233dca | 6004 | && (!val || !IMPLICIT_TYPENAME_TYPE_DECL_P (binding))) |
d8f8dca1 | 6005 | { |
235f734d MM |
6006 | if (val_is_implicit_typename && !yylex) |
6007 | warn_about_implicit_typename_lookup (val, binding); | |
6008 | val = binding; | |
68642fb6 | 6009 | val_is_implicit_typename |
83233dca | 6010 | = IMPLICIT_TYPENAME_TYPE_DECL_P (val); |
235f734d MM |
6011 | if (!val_is_implicit_typename) |
6012 | break; | |
d8f8dca1 MM |
6013 | } |
6014 | } | |
f181d4ae | 6015 | |
235f734d MM |
6016 | /* Now lookup in namespace scopes. */ |
6017 | if (!val || val_is_implicit_typename) | |
e76a2646 | 6018 | { |
2c169bab | 6019 | t = unqualified_namespace_lookup (name, flags, 0); |
235f734d | 6020 | if (t) |
c1def683 | 6021 | { |
235f734d MM |
6022 | if (val_is_implicit_typename && !yylex) |
6023 | warn_about_implicit_typename_lookup (val, t); | |
6024 | val = t; | |
c1def683 JM |
6025 | } |
6026 | } | |
6027 | ||
a28e3c7f | 6028 | done: |
8d08fdba MS |
6029 | if (val) |
6030 | { | |
c91a56d2 | 6031 | /* This should only warn about types used in qualified-ids. */ |
e1cd6e56 | 6032 | if (from_obj && from_obj != val) |
5566b478 | 6033 | { |
c91a56d2 MS |
6034 | if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL |
6035 | && TREE_CODE (val) == TYPE_DECL | |
aca77bd1 JM |
6036 | && ! same_type_p (TREE_TYPE (from_obj), TREE_TYPE (val))) |
6037 | cp_pedwarn ("\ | |
bd0d5d4a JM |
6038 | lookup of `%D' in the scope of `%#T' (`%#D') \ |
6039 | does not match lookup in the current scope (`%#D')", | |
6040 | name, got_object, from_obj, val); | |
594740f3 | 6041 | |
b8b1a3c1 JM |
6042 | /* We don't change val to from_obj if got_object depends on |
6043 | template parms because that breaks implicit typename for | |
6044 | destructor calls. */ | |
6045 | if (! uses_template_parms (got_object)) | |
53fdbb3b | 6046 | val = from_obj; |
5566b478 | 6047 | } |
e1cd6e56 | 6048 | |
0c64a9ca JM |
6049 | /* If we have a single function from a using decl, pull it out. */ |
6050 | if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val)) | |
6051 | val = OVL_FUNCTION (val); | |
8d08fdba | 6052 | } |
e1cd6e56 MS |
6053 | else if (from_obj) |
6054 | val = from_obj; | |
8d08fdba MS |
6055 | |
6056 | return val; | |
6057 | } | |
6058 | ||
700f8a87 MS |
6059 | tree |
6060 | lookup_name_nonclass (name) | |
6061 | tree name; | |
6062 | { | |
3e3f722c | 6063 | return lookup_name_real (name, 0, 1, 0); |
700f8a87 MS |
6064 | } |
6065 | ||
2c73f9f5 ML |
6066 | tree |
6067 | lookup_function_nonclass (name, args) | |
6068 | tree name; | |
6069 | tree args; | |
6070 | { | |
6071 | return lookup_arg_dependent (name, lookup_name_nonclass (name), args); | |
6072 | } | |
6073 | ||
3e3f722c ML |
6074 | tree |
6075 | lookup_name_namespace_only (name) | |
6076 | tree name; | |
6077 | { | |
6078 | /* type-or-namespace, nonclass, namespace_only */ | |
6079 | return lookup_name_real (name, 1, 1, 1); | |
6080 | } | |
6081 | ||
700f8a87 MS |
6082 | tree |
6083 | lookup_name (name, prefer_type) | |
6084 | tree name; | |
6085 | int prefer_type; | |
6086 | { | |
3e3f722c | 6087 | return lookup_name_real (name, prefer_type, 0, 0); |
700f8a87 MS |
6088 | } |
6089 | ||
a7d2d407 MM |
6090 | /* Similar to `lookup_name' but look only in the innermost non-class |
6091 | binding level. */ | |
8d08fdba MS |
6092 | |
6093 | tree | |
6094 | lookup_name_current_level (name) | |
6095 | tree name; | |
6096 | { | |
a7d2d407 MM |
6097 | struct binding_level *b; |
6098 | tree t = NULL_TREE; | |
8d08fdba | 6099 | |
a7d2d407 MM |
6100 | b = current_binding_level; |
6101 | while (b->parm_flag == 2) | |
6102 | b = b->level_chain; | |
6103 | ||
6104 | if (b->namespace_p) | |
8d08fdba | 6105 | { |
5fdaba89 | 6106 | t = IDENTIFIER_NAMESPACE_VALUE (name); |
8d08fdba MS |
6107 | |
6108 | /* extern "C" function() */ | |
6109 | if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST) | |
6110 | t = TREE_VALUE (t); | |
6111 | } | |
68642fb6 | 6112 | else if (IDENTIFIER_BINDING (name) |
f181d4ae | 6113 | && LOCAL_BINDING_P (IDENTIFIER_BINDING (name))) |
8d08fdba | 6114 | { |
a4443a08 MS |
6115 | while (1) |
6116 | { | |
f181d4ae MM |
6117 | if (BINDING_LEVEL (IDENTIFIER_BINDING (name)) == b) |
6118 | return IDENTIFIER_VALUE (name); | |
68642fb6 | 6119 | |
9ed182dc JM |
6120 | if (b->keep == 2) |
6121 | b = b->level_chain; | |
6122 | else | |
6123 | break; | |
6124 | } | |
6125 | } | |
6126 | ||
6127 | return t; | |
6128 | } | |
6129 | ||
6130 | /* Like lookup_name_current_level, but for types. */ | |
6131 | ||
6132 | tree | |
6133 | lookup_type_current_level (name) | |
6134 | tree name; | |
6135 | { | |
6136 | register tree t = NULL_TREE; | |
6137 | ||
6138 | my_friendly_assert (! current_binding_level->namespace_p, 980716); | |
6139 | ||
6140 | if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE | |
6141 | && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node) | |
6142 | { | |
6143 | struct binding_level *b = current_binding_level; | |
6144 | while (1) | |
6145 | { | |
6146 | if (purpose_member (name, b->type_shadowed)) | |
6147 | return REAL_IDENTIFIER_TYPE_VALUE (name); | |
a4443a08 MS |
6148 | if (b->keep == 2) |
6149 | b = b->level_chain; | |
6150 | else | |
6151 | break; | |
6152 | } | |
8d08fdba MS |
6153 | } |
6154 | ||
6155 | return t; | |
6156 | } | |
3e3f722c ML |
6157 | |
6158 | void | |
6159 | begin_only_namespace_names () | |
6160 | { | |
6161 | only_namespace_names = 1; | |
6162 | } | |
6163 | ||
6164 | void | |
6165 | end_only_namespace_names () | |
6166 | { | |
6167 | only_namespace_names = 0; | |
6168 | } | |
8d08fdba | 6169 | \f |
8d08fdba | 6170 | /* Push the declarations of builtin types into the namespace. |
0e5921e8 | 6171 | RID_INDEX is the index of the builtin type |
8d08fdba MS |
6172 | in the array RID_POINTERS. NAME is the name used when looking |
6173 | up the builtin type. TYPE is the _TYPE node for the builtin type. */ | |
6174 | ||
eaa7c03f | 6175 | void |
8d08fdba MS |
6176 | record_builtin_type (rid_index, name, type) |
6177 | enum rid rid_index; | |
d8e178a0 | 6178 | const char *name; |
8d08fdba MS |
6179 | tree type; |
6180 | { | |
6181 | tree rname = NULL_TREE, tname = NULL_TREE; | |
a703fb38 | 6182 | tree tdecl = NULL_TREE; |
8d08fdba | 6183 | |
0e5921e8 | 6184 | if ((int) rid_index < (int) RID_MAX) |
8d08fdba MS |
6185 | rname = ridpointers[(int) rid_index]; |
6186 | if (name) | |
6187 | tname = get_identifier (name); | |
6188 | ||
6189 | TYPE_BUILT_IN (type) = 1; | |
68642fb6 | 6190 | |
8d08fdba MS |
6191 | if (tname) |
6192 | { | |
8d08fdba | 6193 | tdecl = pushdecl (build_decl (TYPE_DECL, tname, type)); |
8d08fdba | 6194 | set_identifier_type_value (tname, NULL_TREE); |
0e5921e8 | 6195 | if ((int) rid_index < (int) RID_MAX) |
2c73f9f5 ML |
6196 | /* Built-in types live in the global namespace. */ |
6197 | SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl); | |
8d08fdba MS |
6198 | } |
6199 | if (rname != NULL_TREE) | |
6200 | { | |
6201 | if (tname != NULL_TREE) | |
6202 | { | |
6203 | set_identifier_type_value (rname, NULL_TREE); | |
2c73f9f5 | 6204 | SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl); |
8d08fdba MS |
6205 | } |
6206 | else | |
6207 | { | |
8d08fdba | 6208 | tdecl = pushdecl (build_decl (TYPE_DECL, rname, type)); |
8d08fdba MS |
6209 | set_identifier_type_value (rname, NULL_TREE); |
6210 | } | |
6211 | } | |
8d08fdba MS |
6212 | } |
6213 | ||
eff71ab0 | 6214 | /* Record one of the standard Java types. |
4d8a1dd6 MM |
6215 | * Declare it as having the given NAME. |
6216 | * If SIZE > 0, it is the size of one of the integral types; | |
6217 | * otherwise it is the negative of the size of one of the other types. */ | |
eff71ab0 PB |
6218 | |
6219 | static tree | |
6220 | record_builtin_java_type (name, size) | |
d8e178a0 | 6221 | const char *name; |
eff71ab0 PB |
6222 | int size; |
6223 | { | |
6224 | tree type, decl; | |
6225 | if (size > 0) | |
6226 | type = make_signed_type (size); | |
6227 | else if (size > -32) | |
6228 | { /* "__java_char" or ""__java_boolean". */ | |
6229 | type = make_unsigned_type (-size); | |
6230 | /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/ | |
6231 | } | |
6232 | else | |
6233 | { /* "__java_float" or ""__java_double". */ | |
6234 | type = make_node (REAL_TYPE); | |
6235 | TYPE_PRECISION (type) = - size; | |
6236 | layout_type (type); | |
6237 | } | |
0e5921e8 | 6238 | record_builtin_type (RID_MAX, name, type); |
eff71ab0 | 6239 | decl = TYPE_NAME (type); |
e229f2cd PB |
6240 | |
6241 | /* Suppress generate debug symbol entries for these types, | |
6242 | since for normal C++ they are just clutter. | |
6243 | However, push_lang_context undoes this if extern "Java" is seen. */ | |
eff71ab0 | 6244 | DECL_IGNORED_P (decl) = 1; |
e229f2cd | 6245 | |
eff71ab0 PB |
6246 | TYPE_FOR_JAVA (type) = 1; |
6247 | return type; | |
6248 | } | |
6249 | ||
036407f7 ML |
6250 | /* Push a type into the namespace so that the back-ends ignore it. */ |
6251 | ||
6252 | static void | |
6253 | record_unknown_type (type, name) | |
6254 | tree type; | |
d8e178a0 | 6255 | const char *name; |
036407f7 ML |
6256 | { |
6257 | tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type)); | |
6258 | /* Make sure the "unknown type" typedecl gets ignored for debug info. */ | |
6259 | DECL_IGNORED_P (decl) = 1; | |
6260 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; | |
6261 | TYPE_SIZE (type) = TYPE_SIZE (void_type_node); | |
6262 | TYPE_ALIGN (type) = 1; | |
11cf4d18 | 6263 | TYPE_USER_ALIGN (type) = 0; |
036407f7 | 6264 | TYPE_MODE (type) = TYPE_MODE (void_type_node); |
68642fb6 | 6265 | } |
036407f7 | 6266 | |
d43829f9 MM |
6267 | /* An string for which we should create an IDENTIFIER_NODE at |
6268 | startup. */ | |
6269 | ||
6270 | typedef struct predefined_identifier | |
6271 | { | |
6272 | /* The name of the identifier. */ | |
6273 | const char *name; | |
6274 | /* The place where the IDENTIFIER_NODE should be stored. */ | |
6275 | tree *node; | |
298d6f60 MM |
6276 | /* Non-zero if this is the name of a constructor or destructor. */ |
6277 | int ctor_or_dtor_p; | |
d43829f9 MM |
6278 | } predefined_identifier; |
6279 | ||
6280 | /* Create all the predefined identifiers. */ | |
6281 | ||
6282 | static void | |
5362b086 | 6283 | initialize_predefined_identifiers () |
d43829f9 MM |
6284 | { |
6285 | struct predefined_identifier *pid; | |
6286 | ||
6287 | /* A table of identifiers to create at startup. */ | |
6288 | static predefined_identifier predefined_identifiers[] = { | |
298d6f60 MM |
6289 | { "C++", &lang_name_cplusplus, 0 }, |
6290 | { "C", &lang_name_c, 0 }, | |
6291 | { "Java", &lang_name_java, 0 }, | |
6292 | { CTOR_NAME, &ctor_identifier, 1 }, | |
6293 | { "__base_ctor", &base_ctor_identifier, 1 }, | |
6294 | { "__comp_ctor", &complete_ctor_identifier, 1 }, | |
6295 | { DTOR_NAME, &dtor_identifier, 1 }, | |
6296 | { "__comp_dtor", &complete_dtor_identifier, 1 }, | |
6297 | { "__base_dtor", &base_dtor_identifier, 1 }, | |
6298 | { "__deleting_dtor", &deleting_dtor_identifier, 1 }, | |
6299 | { VTABLE_DELTA2_NAME, &delta2_identifier, 0 }, | |
6300 | { VTABLE_DELTA_NAME, &delta_identifier, 0 }, | |
6301 | { IN_CHARGE_NAME, &in_charge_identifier, 0 }, | |
6302 | { VTABLE_INDEX_NAME, &index_identifier, 0 }, | |
6303 | { "nelts", &nelts_identifier, 0 }, | |
6304 | { THIS_NAME, &this_identifier, 0 }, | |
6305 | { VTABLE_PFN_NAME, &pfn_identifier, 0 }, | |
6306 | { "__pfn_or_delta2", &pfn_or_delta2_identifier, 0 }, | |
6307 | { "_vptr", &vptr_identifier, 0 }, | |
3ec6bad3 | 6308 | { "__vtt_parm", &vtt_parm_identifier, 0 }, |
1f6e1acc | 6309 | { "std", &std_identifier, 0 }, |
298d6f60 | 6310 | { NULL, NULL, 0 } |
d43829f9 MM |
6311 | }; |
6312 | ||
6313 | for (pid = predefined_identifiers; pid->name; ++pid) | |
298d6f60 MM |
6314 | { |
6315 | *pid->node = get_identifier (pid->name); | |
6316 | if (pid->ctor_or_dtor_p) | |
6317 | IDENTIFIER_CTOR_OR_DTOR_P (*pid->node) = 1; | |
6318 | } | |
d43829f9 MM |
6319 | } |
6320 | ||
8d08fdba MS |
6321 | /* Create the predefined scalar types of C, |
6322 | and some nodes representing standard constants (0, 1, (void *)0). | |
6323 | Initialize the global binding level. | |
6324 | Make definitions for built-in primitive functions. */ | |
6325 | ||
6326 | void | |
6327 | init_decl_processing () | |
6328 | { | |
8d08fdba | 6329 | tree fields[20]; |
8d08fdba | 6330 | |
5bb2a292 MM |
6331 | /* Check to see that the user did not specify an invalid combination |
6332 | of command-line options. */ | |
1f84ec23 MM |
6333 | if (!flag_vtable_thunks) |
6334 | error ("the ABI requires vtable thunks"); | |
5bb2a292 | 6335 | |
d43829f9 MM |
6336 | /* Create all the identifiers we need. */ |
6337 | initialize_predefined_identifiers (); | |
8d08fdba | 6338 | |
8f17b5c5 | 6339 | /* Fill in back-end hooks. */ |
a8f73d4b MM |
6340 | init_lang_status = &push_cp_function_context; |
6341 | free_lang_status = &pop_cp_function_context; | |
b4b8bee7 | 6342 | mark_lang_status = &mark_cp_function_context; |
8f17b5c5 | 6343 | lang_safe_from_p = &c_safe_from_p; |
0a7394bc | 6344 | lang_dump_tree = &cp_dump_tree; |
d363e7bf | 6345 | lang_missing_noreturn_ok_p = &cp_missing_noreturn_ok_p; |
99dccabc | 6346 | |
fc6af6e3 RH |
6347 | cp_parse_init (); |
6348 | init_decl2 (); | |
9cd64686 | 6349 | init_pt (); |
fc6af6e3 | 6350 | |
9cd64686 MM |
6351 | /* Create the global variables. */ |
6352 | push_to_top_level (); | |
8012c983 | 6353 | |
2c73f9f5 | 6354 | /* Enter the global namespace. */ |
30394414 | 6355 | my_friendly_assert (global_namespace == NULL_TREE, 375); |
30394414 JM |
6356 | push_namespace (get_identifier ("::")); |
6357 | global_namespace = current_namespace; | |
6358 | current_lang_name = NULL_TREE; | |
6359 | ||
bccd95ae | 6360 | /* Adjust various flags based on command-line settings. */ |
2642b9bf JM |
6361 | if (! flag_permissive && ! pedantic) |
6362 | flag_pedantic_errors = 1; | |
bccd95ae | 6363 | if (!flag_no_inline) |
b850de4f MM |
6364 | { |
6365 | flag_inline_trees = 1; | |
6366 | flag_no_inline = 1; | |
6367 | } | |
830fcda8 | 6368 | |
8d08fdba MS |
6369 | /* Initially, C. */ |
6370 | current_lang_name = lang_name_c; | |
6371 | ||
6372 | current_function_decl = NULL_TREE; | |
8d08fdba MS |
6373 | current_binding_level = NULL_BINDING_LEVEL; |
6374 | free_binding_level = NULL_BINDING_LEVEL; | |
6375 | ||
81b3411c BS |
6376 | build_common_tree_nodes (flag_signed_char); |
6377 | ||
8d08fdba MS |
6378 | error_mark_list = build_tree_list (error_mark_node, error_mark_node); |
6379 | TREE_TYPE (error_mark_list) = error_mark_node; | |
6380 | ||
a28e3c7f MS |
6381 | /* Make the binding_level structure for global names. */ |
6382 | pushlevel (0); | |
8d08fdba | 6383 | global_binding_level = current_binding_level; |
2c73f9f5 ML |
6384 | /* The global level is the namespace level of ::. */ |
6385 | NAMESPACE_LEVEL (global_namespace) = global_binding_level; | |
6386 | declare_namespace_level (); | |
8d08fdba | 6387 | |
6bcedb4e MM |
6388 | /* Create the `std' namespace. */ |
6389 | if (flag_honor_std) | |
6390 | { | |
6391 | push_namespace (std_identifier); | |
6392 | std_node = current_namespace; | |
6393 | pop_namespace (); | |
6394 | fake_std_node = error_mark_node; | |
6395 | } | |
6396 | else | |
6397 | { | |
6398 | fake_std_node = build_decl (NAMESPACE_DECL, | |
6399 | std_identifier, | |
6400 | void_type_node); | |
6401 | pushdecl (fake_std_node); | |
6402 | } | |
5362b086 | 6403 | |
eaa7c03f | 6404 | c_common_nodes_and_builtins (); |
37c46b43 | 6405 | |
4d8a1dd6 MM |
6406 | java_byte_type_node = record_builtin_java_type ("__java_byte", 8); |
6407 | java_short_type_node = record_builtin_java_type ("__java_short", 16); | |
6408 | java_int_type_node = record_builtin_java_type ("__java_int", 32); | |
6409 | java_long_type_node = record_builtin_java_type ("__java_long", 64); | |
6410 | java_float_type_node = record_builtin_java_type ("__java_float", -32); | |
6411 | java_double_type_node = record_builtin_java_type ("__java_double", -64); | |
6412 | java_char_type_node = record_builtin_java_type ("__java_char", -16); | |
6413 | java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1); | |
eff71ab0 | 6414 | |
8d08fdba MS |
6415 | integer_two_node = build_int_2 (2, 0); |
6416 | TREE_TYPE (integer_two_node) = integer_type_node; | |
6417 | integer_three_node = build_int_2 (3, 0); | |
6418 | TREE_TYPE (integer_three_node) = integer_type_node; | |
8d08fdba | 6419 | |
255512c1 JM |
6420 | boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE); |
6421 | TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE); | |
c1ea6a0b BK |
6422 | TYPE_MAX_VALUE (boolean_type_node) = build_int_2 (1, 0); |
6423 | TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node)) = boolean_type_node; | |
6424 | TYPE_PRECISION (boolean_type_node) = 1; | |
255512c1 JM |
6425 | record_builtin_type (RID_BOOL, "bool", boolean_type_node); |
6426 | boolean_false_node = build_int_2 (0, 0); | |
6427 | TREE_TYPE (boolean_false_node) = boolean_type_node; | |
6428 | boolean_true_node = build_int_2 (1, 0); | |
6429 | TREE_TYPE (boolean_true_node) = boolean_type_node; | |
2986ae00 | 6430 | |
ff0bee63 | 6431 | signed_size_zero_node = build_int_2 (0, 0); |
e92cc029 MS |
6432 | TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype)); |
6433 | ||
4cc1d462 | 6434 | empty_except_spec = build_tree_list (NULL_TREE, NULL_TREE); |
5fd8e536 JM |
6435 | |
6436 | #if 0 | |
6437 | record_builtin_type (RID_MAX, NULL_PTR, string_type_node); | |
6438 | #endif | |
6439 | ||
1f84ec23 MM |
6440 | delta_type_node = ptrdiff_type_node; |
6441 | vtable_index_type = ptrdiff_type_node; | |
c7e266a6 | 6442 | |
3ec6bad3 | 6443 | vtt_parm_type = build_pointer_type (const_ptr_type_node); |
356955cf | 6444 | lang_type_promotes_to = convert_type_from_ellipsis; |
7f4edbcb | 6445 | |
824b9a4c | 6446 | void_ftype_ptr |
4cc1d462 | 6447 | = build_exception_variant (void_ftype_ptr, empty_except_spec); |
8d08fdba | 6448 | |
8d08fdba MS |
6449 | /* C++ extensions */ |
6450 | ||
6451 | unknown_type_node = make_node (UNKNOWN_TYPE); | |
036407f7 ML |
6452 | record_unknown_type (unknown_type_node, "unknown type"); |
6453 | ||
8d08fdba MS |
6454 | /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */ |
6455 | TREE_TYPE (unknown_type_node) = unknown_type_node; | |
a6967cc0 | 6456 | |
03d0f4af | 6457 | TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0); |
a6967cc0 JM |
6458 | |
6459 | /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same | |
6460 | result. */ | |
8d08fdba MS |
6461 | TYPE_POINTER_TO (unknown_type_node) = unknown_type_node; |
6462 | TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node; | |
6463 | ||
8926095f | 6464 | if (flag_vtable_thunks) |
700f8a87 MS |
6465 | { |
6466 | /* Make sure we get a unique function type, so we can give | |
6467 | its pointer type a name. (This wins for gdb.) */ | |
6468 | tree vfunc_type = make_node (FUNCTION_TYPE); | |
6469 | TREE_TYPE (vfunc_type) = integer_type_node; | |
6470 | TYPE_ARG_TYPES (vfunc_type) = NULL_TREE; | |
6471 | layout_type (vfunc_type); | |
6472 | ||
6473 | vtable_entry_type = build_pointer_type (vfunc_type); | |
6474 | } | |
8926095f | 6475 | else |
700f8a87 | 6476 | { |
33848bb0 | 6477 | vtable_entry_type = make_aggr_type (RECORD_TYPE); |
721c3b42 MM |
6478 | fields[0] = build_decl (FIELD_DECL, delta_identifier, |
6479 | delta_type_node); | |
6480 | fields[1] = build_decl (FIELD_DECL, index_identifier, | |
6481 | delta_type_node); | |
6482 | fields[2] = build_decl (FIELD_DECL, pfn_identifier, | |
6483 | ptr_type_node); | |
700f8a87 MS |
6484 | finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2, |
6485 | double_type_node); | |
6486 | ||
6487 | /* Make this part of an invisible union. */ | |
6488 | fields[3] = copy_node (fields[2]); | |
6489 | TREE_TYPE (fields[3]) = delta_type_node; | |
6490 | DECL_NAME (fields[3]) = delta2_identifier; | |
6491 | DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node); | |
6492 | DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node); | |
06ceef4e | 6493 | DECL_SIZE_UNIT (fields[3]) = TYPE_SIZE_UNIT (delta_type_node); |
700f8a87 MS |
6494 | TREE_UNSIGNED (fields[3]) = 0; |
6495 | TREE_CHAIN (fields[2]) = fields[3]; | |
91063b51 MM |
6496 | vtable_entry_type = build_qualified_type (vtable_entry_type, |
6497 | TYPE_QUAL_CONST); | |
700f8a87 | 6498 | } |
0e5921e8 | 6499 | record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type); |
8d08fdba | 6500 | |
8d08fdba | 6501 | vtbl_type_node |
52bf7d5d | 6502 | = build_cplus_array_type (vtable_entry_type, NULL_TREE); |
8d08fdba | 6503 | layout_type (vtbl_type_node); |
91063b51 | 6504 | vtbl_type_node = build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST); |
0e5921e8 | 6505 | record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node); |
849da744 MM |
6506 | vtbl_ptr_type_node = build_pointer_type (vtable_entry_type); |
6507 | layout_type (vtbl_ptr_type_node); | |
0e5921e8 | 6508 | record_builtin_type (RID_MAX, NULL_PTR, vtbl_ptr_type_node); |
8d08fdba | 6509 | |
1f84ec23 MM |
6510 | push_namespace (get_identifier ("__cxxabiv1")); |
6511 | abi_node = current_namespace; | |
6512 | pop_namespace (); | |
6633d636 | 6513 | |
2c73f9f5 | 6514 | global_type_node = make_node (LANG_TYPE); |
036407f7 | 6515 | record_unknown_type (global_type_node, "global type"); |
2c73f9f5 | 6516 | |
db5ae43f MS |
6517 | /* Now, C++. */ |
6518 | current_lang_name = lang_name_cplusplus; | |
8d08fdba | 6519 | |
ced78d8b | 6520 | { |
2c73f9f5 | 6521 | tree bad_alloc_type_node, newtype, deltype; |
0ba8a114 | 6522 | |
2c73f9f5 | 6523 | if (flag_honor_std) |
6bcedb4e | 6524 | push_namespace (std_identifier); |
2c73f9f5 | 6525 | bad_alloc_type_node = xref_tag |
ca107ded | 6526 | (class_type_node, get_identifier ("bad_alloc"), 1); |
2c73f9f5 ML |
6527 | if (flag_honor_std) |
6528 | pop_namespace (); | |
6529 | newtype = build_exception_variant | |
0ba8a114 NS |
6530 | (ptr_ftype_sizetype, add_exception_specifier |
6531 | (NULL_TREE, bad_alloc_type_node, -1)); | |
4cc1d462 | 6532 | deltype = build_exception_variant (void_ftype_ptr, empty_except_spec); |
596ea4e5 AS |
6533 | push_cp_library_fn (NEW_EXPR, newtype); |
6534 | push_cp_library_fn (VEC_NEW_EXPR, newtype); | |
6535 | global_delete_fndecl = push_cp_library_fn (DELETE_EXPR, deltype); | |
6536 | push_cp_library_fn (VEC_DELETE_EXPR, deltype); | |
ced78d8b | 6537 | } |
8d08fdba MS |
6538 | |
6539 | abort_fndecl | |
1f84ec23 | 6540 | = build_library_fn_ptr ("__cxa_pure_virtual", void_ftype); |
8d08fdba | 6541 | |
8d08fdba MS |
6542 | /* Perform other language dependent initializations. */ |
6543 | init_class_processing (); | |
6544 | init_init_processing (); | |
6545 | init_search_processing (); | |
db48b831 | 6546 | init_rtti_processing (); |
8d08fdba | 6547 | |
6467930b | 6548 | if (flag_exceptions) |
8d2733ca | 6549 | init_exception_processing (); |
8d08fdba MS |
6550 | if (flag_no_inline) |
6551 | { | |
6552 | flag_inline_functions = 0; | |
8d08fdba | 6553 | } |
9e9ff709 | 6554 | |
7fcdf4c2 | 6555 | if (! supports_one_only ()) |
72b7eeff | 6556 | flag_weak = 0; |
8d08fdba | 6557 | |
2ce07e2d | 6558 | make_fname_decl = cp_make_fname_decl; |
0ba8a114 | 6559 | start_fname_decls (); |
8d08fdba MS |
6560 | |
6561 | /* Prepare to check format strings against argument lists. */ | |
6562 | init_function_format_info (); | |
e9a25f70 JL |
6563 | |
6564 | /* Show we use EH for cleanups. */ | |
6565 | using_eh_for_cleanups (); | |
62c154ed | 6566 | |
e5dc5fb2 | 6567 | valid_lang_attribute = cp_valid_lang_attribute; |
d9cf7c82 JM |
6568 | |
6569 | /* Maintain consistency. Perhaps we should just complain if they | |
6570 | say -fwritable-strings? */ | |
6571 | if (flag_writable_strings) | |
6572 | flag_const_strings = 0; | |
fc6af6e3 RH |
6573 | |
6574 | /* Add GC roots for all of our global variables. */ | |
6575 | ggc_add_tree_root (c_global_trees, sizeof c_global_trees / sizeof(tree)); | |
6576 | ggc_add_tree_root (cp_global_trees, sizeof cp_global_trees / sizeof(tree)); | |
fc6af6e3 RH |
6577 | ggc_add_tree_root (&integer_three_node, 1); |
6578 | ggc_add_tree_root (&integer_two_node, 1); | |
fc6af6e3 | 6579 | ggc_add_tree_root (&signed_size_zero_node, 1); |
fc6af6e3 RH |
6580 | ggc_add_tree_root (&size_one_node, 1); |
6581 | ggc_add_tree_root (&size_zero_node, 1); | |
fc6af6e3 RH |
6582 | ggc_add_root (&global_binding_level, 1, sizeof global_binding_level, |
6583 | mark_binding_level); | |
9cd64686 | 6584 | ggc_add_root (&scope_chain, 1, sizeof scope_chain, &mark_saved_scope); |
fc6af6e3 RH |
6585 | ggc_add_tree_root (&static_ctors, 1); |
6586 | ggc_add_tree_root (&static_dtors, 1); | |
9cd64686 | 6587 | ggc_add_tree_root (&lastiddecl, 1); |
fc6af6e3 | 6588 | |
fc6af6e3 RH |
6589 | ggc_add_tree_root (&last_function_parm_tags, 1); |
6590 | ggc_add_tree_root (¤t_function_return_value, 1); | |
fc6af6e3 | 6591 | ggc_add_tree_root (¤t_function_parm_tags, 1); |
9cd64686 | 6592 | ggc_add_tree_root (&last_function_parms, 1); |
fc6af6e3 | 6593 | ggc_add_tree_root (&error_mark_list, 1); |
9cd64686 | 6594 | |
fc6af6e3 | 6595 | ggc_add_tree_root (&global_namespace, 1); |
fc6af6e3 RH |
6596 | ggc_add_tree_root (&global_type_node, 1); |
6597 | ggc_add_tree_root (&anonymous_namespace_name, 1); | |
9cd64686 MM |
6598 | |
6599 | ggc_add_tree_root (&got_object, 1); | |
6600 | ggc_add_tree_root (&got_scope, 1); | |
6601 | ||
6602 | ggc_add_tree_root (¤t_lang_name, 1); | |
6603 | ggc_add_tree_root (&static_aggregates, 1); | |
4890c2f4 | 6604 | ggc_add_tree_root (&free_bindings, 1); |
62c154ed JM |
6605 | } |
6606 | ||
0ba8a114 NS |
6607 | /* Generate an initializer for a function naming variable from |
6608 | NAME. NAME may be NULL, in which case we generate a special | |
6609 | ERROR_MARK node which should be replaced later. */ | |
6610 | ||
6611 | tree | |
6612 | cp_fname_init (name) | |
6613 | const char *name; | |
6614 | { | |
6615 | tree domain = NULL_TREE; | |
6616 | tree type; | |
6617 | tree init = NULL_TREE; | |
6618 | size_t length = 0; | |
6619 | ||
6620 | if (name) | |
6621 | { | |
6622 | length = strlen (name); | |
6623 | domain = build_index_type (size_int (length)); | |
6624 | init = build_string (length + 1, name); | |
6625 | } | |
6626 | ||
6627 | type = build_qualified_type (char_type_node, TYPE_QUAL_CONST); | |
6628 | type = build_cplus_array_type (type, domain); | |
6629 | ||
6630 | if (init) | |
6631 | TREE_TYPE (init) = type; | |
6632 | else | |
6633 | /* We don't know the value until instantiation time. Make | |
6634 | something which will be digested now, but replaced later. */ | |
6635 | init = build (ERROR_MARK, type); | |
6636 | ||
6637 | return init; | |
6638 | } | |
6639 | ||
2ce07e2d NS |
6640 | /* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give the |
6641 | decl, NAME is the initialization string and TYPE_DEP indicates whether | |
6642 | NAME depended on the type of the function. We make use of that to detect | |
0ba8a114 NS |
6643 | __PRETTY_FUNCTION__ inside a template fn. This is being done |
6644 | lazily at the point of first use, so we musn't push the decl now. */ | |
2ce07e2d NS |
6645 | |
6646 | static tree | |
0ba8a114 | 6647 | cp_make_fname_decl (id, type_dep) |
2ce07e2d | 6648 | tree id; |
2ce07e2d NS |
6649 | int type_dep; |
6650 | { | |
0ba8a114 NS |
6651 | const char *name = (type_dep && processing_template_decl |
6652 | ? NULL : fname_as_string (type_dep)); | |
6653 | tree init = cp_fname_init (name); | |
6654 | tree decl = build_decl (VAR_DECL, id, TREE_TYPE (init)); | |
2ce07e2d | 6655 | |
0ba8a114 NS |
6656 | /* As we don't push the decl here, we must set the context. */ |
6657 | DECL_CONTEXT (decl) = current_function_decl; | |
6658 | DECL_PRETTY_FUNCTION_P (decl) = type_dep; | |
6659 | ||
2ce07e2d NS |
6660 | TREE_STATIC (decl) = 1; |
6661 | TREE_READONLY (decl) = 1; | |
2ce07e2d | 6662 | DECL_ARTIFICIAL (decl) = 1; |
2ce07e2d | 6663 | DECL_INITIAL (decl) = init; |
0ba8a114 NS |
6664 | |
6665 | TREE_USED (decl) = 1; | |
5362b086 | 6666 | |
0ba8a114 NS |
6667 | cp_finish_decl (decl, init, NULL_TREE, LOOKUP_ONLYCONVERTING); |
6668 | ||
2ce07e2d NS |
6669 | return decl; |
6670 | } | |
6671 | ||
0c11ada6 JM |
6672 | /* Entry point for the benefit of c_common_nodes_and_builtins. |
6673 | ||
6674 | Make a definition for a builtin function named NAME and whose data type | |
8d08fdba | 6675 | is TYPE. TYPE should be a function type with argument types. |
8d08fdba | 6676 | |
0c11ada6 JM |
6677 | CLASS and CODE tell later passes how to compile calls to this function. |
6678 | See tree.h for possible values. | |
6679 | ||
6680 | If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME, | |
8d08fdba MS |
6681 | the name to be called if we can't opencode the function. */ |
6682 | ||
6683 | tree | |
0c11ada6 | 6684 | builtin_function (name, type, code, class, libname) |
d8e178a0 | 6685 | const char *name; |
8d08fdba | 6686 | tree type; |
0c11ada6 JM |
6687 | int code; |
6688 | enum built_in_class class; | |
6689 | const char *libname; | |
8d08fdba | 6690 | { |
596ea4e5 | 6691 | tree decl = build_library_fn_1 (get_identifier (name), ERROR_MARK, type); |
0c11ada6 JM |
6692 | DECL_BUILT_IN_CLASS (decl) = class; |
6693 | DECL_FUNCTION_CODE (decl) = code; | |
12a22e76 | 6694 | |
2c73f9f5 | 6695 | my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 392); |
2c73f9f5 | 6696 | |
6bcedb4e MM |
6697 | /* All builtins that don't begin with an `_' should go in the `std' |
6698 | namespace. */ | |
5362b086 | 6699 | if (flag_honor_std && name[0] != '_') |
6bcedb4e MM |
6700 | { |
6701 | push_namespace (std_identifier); | |
6702 | DECL_CONTEXT (decl) = std_node; | |
6703 | } | |
6704 | pushdecl (decl); | |
6705 | if (flag_honor_std && name[0] != '_') | |
6706 | pop_namespace (); | |
6707 | ||
8d08fdba MS |
6708 | /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME, |
6709 | we cannot change DECL_ASSEMBLER_NAME until we have installed this | |
6710 | function in the namespace. */ | |
0c11ada6 | 6711 | if (libname) |
92643fea MM |
6712 | SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname)); |
6713 | make_decl_rtl (decl, NULL); | |
935d1834 ZW |
6714 | |
6715 | /* Warn if a function in the namespace for users | |
6716 | is used without an occasion to consider it declared. */ | |
6717 | if (name[0] != '_' || name[1] != '_') | |
6718 | DECL_ANTICIPATED (decl) = 1; | |
6719 | ||
8d08fdba MS |
6720 | return decl; |
6721 | } | |
7f4edbcb | 6722 | |
0c11ada6 JM |
6723 | /* Generate a FUNCTION_DECL with the typical flags for a runtime library |
6724 | function. Not called directly. */ | |
6725 | ||
6726 | static tree | |
596ea4e5 | 6727 | build_library_fn_1 (name, operator_code, type) |
0c11ada6 | 6728 | tree name; |
596ea4e5 | 6729 | enum tree_code operator_code; |
0c11ada6 JM |
6730 | tree type; |
6731 | { | |
6732 | tree fn = build_lang_decl (FUNCTION_DECL, name, type); | |
6733 | DECL_EXTERNAL (fn) = 1; | |
6734 | TREE_PUBLIC (fn) = 1; | |
6735 | DECL_ARTIFICIAL (fn) = 1; | |
6736 | TREE_NOTHROW (fn) = 1; | |
596ea4e5 | 6737 | SET_OVERLOADED_OPERATOR_CODE (fn, operator_code); |
5d2ed28c | 6738 | SET_DECL_LANGUAGE (fn, lang_c); |
0c11ada6 JM |
6739 | return fn; |
6740 | } | |
c2a37c55 | 6741 | |
0c11ada6 JM |
6742 | /* Returns the _DECL for a library function with C linkage. |
6743 | We assume that such functions never throw; if this is incorrect, | |
6744 | callers should unset TREE_NOTHROW. */ | |
c2a37c55 | 6745 | |
7f4edbcb | 6746 | tree |
0c11ada6 JM |
6747 | build_library_fn (name, type) |
6748 | tree name; | |
6749 | tree type; | |
6750 | { | |
19e7881c | 6751 | return build_library_fn_1 (name, ERROR_MARK, type); |
0c11ada6 JM |
6752 | } |
6753 | ||
6754 | /* Returns the _DECL for a library function with C++ linkage. */ | |
6755 | ||
596ea4e5 AS |
6756 | static tree |
6757 | build_cp_library_fn (name, operator_code, type) | |
0c11ada6 | 6758 | tree name; |
596ea4e5 | 6759 | enum tree_code operator_code; |
0c11ada6 JM |
6760 | tree type; |
6761 | { | |
596ea4e5 | 6762 | tree fn = build_library_fn_1 (name, operator_code, type); |
0c11ada6 | 6763 | TREE_NOTHROW (fn) = TYPE_NOTHROW_P (type); |
6bbf1598 | 6764 | DECL_CONTEXT (fn) = FROB_CONTEXT (current_namespace); |
5d2ed28c | 6765 | SET_DECL_LANGUAGE (fn, lang_cplusplus); |
0c11ada6 | 6766 | set_mangled_name_for_decl (fn); |
0c11ada6 JM |
6767 | return fn; |
6768 | } | |
6769 | ||
6770 | /* Like build_library_fn, but takes a C string instead of an | |
6771 | IDENTIFIER_NODE. */ | |
6772 | ||
6773 | tree | |
6774 | build_library_fn_ptr (name, type) | |
7f4edbcb BS |
6775 | const char *name; |
6776 | tree type; | |
7f4edbcb | 6777 | { |
0c11ada6 JM |
6778 | return build_library_fn (get_identifier (name), type); |
6779 | } | |
6780 | ||
6781 | /* Like build_cp_library_fn, but takes a C string instead of an | |
6782 | IDENTIFIER_NODE. */ | |
6783 | ||
6784 | tree | |
6785 | build_cp_library_fn_ptr (name, type) | |
6786 | const char *name; | |
6787 | tree type; | |
6788 | { | |
596ea4e5 | 6789 | return build_cp_library_fn (get_identifier (name), ERROR_MARK, type); |
0c11ada6 JM |
6790 | } |
6791 | ||
6792 | /* Like build_library_fn, but also pushes the function so that we will | |
6793 | be able to find it via IDENTIFIER_GLOBAL_VALUE. */ | |
6794 | ||
6795 | tree | |
6796 | push_library_fn (name, type) | |
6797 | tree name, type; | |
6798 | { | |
6799 | tree fn = build_library_fn (name, type); | |
6800 | pushdecl_top_level (fn); | |
6801 | return fn; | |
6802 | } | |
6803 | ||
6804 | /* Like build_cp_library_fn, but also pushes the function so that it | |
6805 | will be found by normal lookup. */ | |
6806 | ||
596ea4e5 AS |
6807 | static tree |
6808 | push_cp_library_fn (operator_code, type) | |
6809 | enum tree_code operator_code; | |
0c11ada6 JM |
6810 | tree type; |
6811 | { | |
5362b086 | 6812 | tree fn = build_cp_library_fn (ansi_opname (operator_code), |
596ea4e5 AS |
6813 | operator_code, |
6814 | type); | |
0c11ada6 JM |
6815 | pushdecl (fn); |
6816 | return fn; | |
6817 | } | |
6818 | ||
6819 | /* Like push_library_fn, but takes a TREE_LIST of parm types rather than | |
6820 | a FUNCTION_TYPE. */ | |
6821 | ||
6822 | tree | |
6823 | push_void_library_fn (name, parmtypes) | |
6824 | tree name, parmtypes; | |
6825 | { | |
6826 | tree type = build_function_type (void_type_node, parmtypes); | |
6827 | return push_library_fn (name, type); | |
6828 | } | |
6829 | ||
cf74fb86 | 6830 | /* Like push_library_fn, but also note that this function throws |
0c11ada6 JM |
6831 | and does not return. Used for __throw_foo and the like. */ |
6832 | ||
6833 | tree | |
cf74fb86 JM |
6834 | push_throw_library_fn (name, type) |
6835 | tree name, type; | |
0c11ada6 | 6836 | { |
cf74fb86 | 6837 | tree fn = push_library_fn (name, type); |
0c11ada6 JM |
6838 | TREE_THIS_VOLATILE (fn) = 1; |
6839 | TREE_NOTHROW (fn) = 0; | |
6840 | return fn; | |
7f4edbcb | 6841 | } |
8d08fdba | 6842 | \f |
61a127b3 MM |
6843 | /* When we call finish_struct for an anonymous union, we create |
6844 | default copy constructors and such. But, an anonymous union | |
6845 | shouldn't have such things; this function undoes the damage to the | |
6846 | anonymous union type T. | |
6847 | ||
6848 | (The reason that we create the synthesized methods is that we don't | |
6849 | distinguish `union { int i; }' from `typedef union { int i; } U'. | |
6850 | The first is an anonymous union; the second is just an ordinary | |
6851 | union type.) */ | |
6852 | ||
6853 | void | |
6bdb8141 | 6854 | fixup_anonymous_aggr (t) |
61a127b3 MM |
6855 | tree t; |
6856 | { | |
6857 | tree *q; | |
6858 | ||
6859 | /* Wipe out memory of synthesized methods */ | |
6860 | TYPE_HAS_CONSTRUCTOR (t) = 0; | |
6861 | TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0; | |
6862 | TYPE_HAS_INIT_REF (t) = 0; | |
6863 | TYPE_HAS_CONST_INIT_REF (t) = 0; | |
6864 | TYPE_HAS_ASSIGN_REF (t) = 0; | |
61a127b3 MM |
6865 | TYPE_HAS_CONST_ASSIGN_REF (t) = 0; |
6866 | ||
6867 | /* Splice the implicitly generated functions out of the TYPE_METHODS | |
6868 | list. */ | |
6869 | q = &TYPE_METHODS (t); | |
6870 | while (*q) | |
6871 | { | |
6872 | if (DECL_ARTIFICIAL (*q)) | |
6873 | *q = TREE_CHAIN (*q); | |
6874 | else | |
6875 | q = &TREE_CHAIN (*q); | |
6876 | } | |
6877 | ||
cab1f180 | 6878 | /* ISO C++ 9.5.3. Anonymous unions may not have function members. */ |
61a127b3 | 6879 | if (TYPE_METHODS (t)) |
1f0d71c5 | 6880 | cp_error_at ("an anonymous union cannot have function members", t); |
a1c2b86d JJ |
6881 | |
6882 | /* Anonymous aggregates cannot have fields with ctors, dtors or complex | |
6883 | assignment operators (because they cannot have these methods themselves). | |
6884 | For anonymous unions this is already checked because they are not allowed | |
6885 | in any union, otherwise we have to check it. */ | |
6886 | if (TREE_CODE (t) != UNION_TYPE) | |
6887 | { | |
6888 | tree field, type; | |
6889 | ||
6890 | for (field = TYPE_FIELDS (t); field; field = TREE_CHAIN (field)) | |
6891 | if (TREE_CODE (field) == FIELD_DECL) | |
6892 | { | |
6893 | type = TREE_TYPE (field); | |
6894 | if (CLASS_TYPE_P (type)) | |
6895 | { | |
6896 | if (TYPE_NEEDS_CONSTRUCTING (type)) | |
6897 | cp_error_at ("member %#D' with constructor not allowed in anonymous aggregate", | |
6898 | field); | |
6899 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) | |
6900 | cp_error_at ("member %#D' with destructor not allowed in anonymous aggregate", | |
6901 | field); | |
6902 | if (TYPE_HAS_COMPLEX_ASSIGN_REF (type)) | |
6903 | cp_error_at ("member %#D' with copy assignment operator not allowed in anonymous aggregate", | |
6904 | field); | |
6905 | } | |
6906 | } | |
6907 | } | |
61a127b3 MM |
6908 | } |
6909 | ||
72a93143 JM |
6910 | /* Make sure that a declaration with no declarator is well-formed, i.e. |
6911 | just defines a tagged type or anonymous union. | |
8d08fdba | 6912 | |
72a93143 | 6913 | Returns the type defined, if any. */ |
8d08fdba | 6914 | |
72a93143 JM |
6915 | tree |
6916 | check_tag_decl (declspecs) | |
8d08fdba MS |
6917 | tree declspecs; |
6918 | { | |
72a93143 | 6919 | int found_type = 0; |
2bdb0643 | 6920 | int saw_friend = 0; |
e8186ecf | 6921 | int saw_typedef = 0; |
2986ae00 | 6922 | tree ob_modifier = NULL_TREE; |
8d08fdba | 6923 | register tree link; |
8d08fdba MS |
6924 | register tree t = NULL_TREE; |
6925 | ||
6926 | for (link = declspecs; link; link = TREE_CHAIN (link)) | |
6927 | { | |
6928 | register tree value = TREE_VALUE (link); | |
6929 | ||
2bdb0643 | 6930 | if (TYPE_P (value) |
bd0d5d4a | 6931 | || TREE_CODE (value) == TYPE_DECL |
2bdb0643 JM |
6932 | || (TREE_CODE (value) == IDENTIFIER_NODE |
6933 | && IDENTIFIER_GLOBAL_VALUE (value) | |
bd0d5d4a | 6934 | && TREE_CODE (IDENTIFIER_GLOBAL_VALUE (value)) == TYPE_DECL)) |
8d08fdba | 6935 | { |
72a93143 | 6936 | ++found_type; |
5566b478 | 6937 | |
bd0d5d4a JM |
6938 | if (found_type == 2 && TREE_CODE (value) == IDENTIFIER_NODE) |
6939 | { | |
6940 | if (! in_system_header) | |
6941 | cp_pedwarn ("redeclaration of C++ built-in type `%T'", value); | |
6942 | return NULL_TREE; | |
6943 | } | |
6944 | ||
6945 | if (TYPE_P (value) | |
6946 | && ((TREE_CODE (value) != TYPENAME_TYPE && IS_AGGR_TYPE (value)) | |
6947 | || TREE_CODE (value) == ENUMERAL_TYPE)) | |
72a93143 JM |
6948 | { |
6949 | my_friendly_assert (TYPE_MAIN_DECL (value) != NULL_TREE, 261); | |
6950 | t = value; | |
6951 | } | |
8d08fdba | 6952 | } |
e8186ecf GDR |
6953 | else if (value == ridpointers[(int) RID_TYPEDEF]) |
6954 | saw_typedef = 1; | |
83f660b7 JM |
6955 | else if (value == ridpointers[(int) RID_FRIEND]) |
6956 | { | |
83f660b7 JM |
6957 | if (current_class_type == NULL_TREE |
6958 | || current_scope () != current_class_type) | |
6959 | ob_modifier = value; | |
2bdb0643 JM |
6960 | else |
6961 | saw_friend = 1; | |
83f660b7 | 6962 | } |
8d08fdba | 6963 | else if (value == ridpointers[(int) RID_STATIC] |
2986ae00 MS |
6964 | || value == ridpointers[(int) RID_EXTERN] |
6965 | || value == ridpointers[(int) RID_AUTO] | |
28cbf42c MS |
6966 | || value == ridpointers[(int) RID_REGISTER] |
6967 | || value == ridpointers[(int) RID_INLINE] | |
6968 | || value == ridpointers[(int) RID_VIRTUAL] | |
72a93143 JM |
6969 | || value == ridpointers[(int) RID_CONST] |
6970 | || value == ridpointers[(int) RID_VOLATILE] | |
28cbf42c | 6971 | || value == ridpointers[(int) RID_EXPLICIT]) |
2986ae00 | 6972 | ob_modifier = value; |
8d08fdba MS |
6973 | } |
6974 | ||
72a93143 JM |
6975 | if (found_type > 1) |
6976 | error ("multiple types in one declaration"); | |
7e2067ca | 6977 | |
2bdb0643 | 6978 | if (t == NULL_TREE && ! saw_friend) |
7e2067ca | 6979 | pedwarn ("declaration does not declare anything"); |
0dd3962d | 6980 | |
1951a1b6 | 6981 | /* Check for an anonymous union. */ |
6bdb8141 | 6982 | else if (t && IS_AGGR_TYPE_CODE (TREE_CODE (t)) |
1951a1b6 | 6983 | && TYPE_ANONYMOUS_P (t)) |
0dd3962d | 6984 | { |
e8186ecf GDR |
6985 | /* 7/3 In a simple-declaration, the optional init-declarator-list |
6986 | can be omitted only when declaring a class (clause 9) or | |
6987 | enumeration (7.2), that is, when the decl-specifier-seq contains | |
6988 | either a class-specifier, an elaborated-type-specifier with | |
6989 | a class-key (9.1), or an enum-specifier. In these cases and | |
6990 | whenever a class-specifier or enum-specifier is present in the | |
6991 | decl-specifier-seq, the identifiers in these specifiers are among | |
6992 | the names being declared by the declaration (as class-name, | |
6993 | enum-names, or enumerators, depending on the syntax). In such | |
6994 | cases, and except for the declaration of an unnamed bit-field (9.6), | |
6995 | the decl-specifier-seq shall introduce one or more names into the | |
6996 | program, or shall redeclare a name introduced by a previous | |
6997 | declaration. [Example: | |
6998 | enum { }; // ill-formed | |
6999 | typedef class { }; // ill-formed | |
7000 | --end example] */ | |
7001 | if (saw_typedef) | |
7002 | { | |
7003 | error ("Missing type-name in typedef-declaration."); | |
7004 | return NULL_TREE; | |
7005 | } | |
0dd3962d | 7006 | /* Anonymous unions are objects, so they can have specifiers. */; |
6bdb8141 JM |
7007 | SET_ANON_AGGR_TYPE_P (t); |
7008 | ||
7009 | if (TREE_CODE (t) != UNION_TYPE && pedantic && ! in_system_header) | |
7010 | pedwarn ("ISO C++ prohibits anonymous structs"); | |
0dd3962d JM |
7011 | } |
7012 | ||
83f660b7 | 7013 | else if (ob_modifier) |
8d08fdba | 7014 | { |
83f660b7 JM |
7015 | if (ob_modifier == ridpointers[(int) RID_INLINE] |
7016 | || ob_modifier == ridpointers[(int) RID_VIRTUAL]) | |
7017 | cp_error ("`%D' can only be specified for functions", ob_modifier); | |
7018 | else if (ob_modifier == ridpointers[(int) RID_FRIEND]) | |
7019 | cp_error ("`%D' can only be specified inside a class", ob_modifier); | |
7020 | else if (ob_modifier == ridpointers[(int) RID_EXPLICIT]) | |
7021 | cp_error ("`%D' can only be specified for constructors", | |
7022 | ob_modifier); | |
7023 | else | |
7024 | cp_error ("`%D' can only be specified for objects and functions", | |
7025 | ob_modifier); | |
72a93143 | 7026 | } |
8d08fdba | 7027 | |
72a93143 JM |
7028 | return t; |
7029 | } | |
7030 | ||
7031 | /* Called when a declaration is seen that contains no names to declare. | |
7032 | If its type is a reference to a structure, union or enum inherited | |
7033 | from a containing scope, shadow that tag name for the current scope | |
7034 | with a forward reference. | |
7035 | If its type defines a new named structure or union | |
7036 | or defines an enum, it is valid but we need not do anything here. | |
7037 | Otherwise, it is an error. | |
7038 | ||
7039 | C++: may have to grok the declspecs to learn about static, | |
7040 | complain for anonymous unions. */ | |
7041 | ||
7042 | void | |
7043 | shadow_tag (declspecs) | |
7044 | tree declspecs; | |
7045 | { | |
7046 | tree t = check_tag_decl (declspecs); | |
7047 | ||
7048 | if (t) | |
7049 | maybe_process_partial_specialization (t); | |
7050 | ||
7051 | /* This is where the variables in an anonymous union are | |
7052 | declared. An anonymous union declaration looks like: | |
7053 | union { ... } ; | |
7054 | because there is no declarator after the union, the parser | |
7055 | sends that declaration here. */ | |
6bdb8141 | 7056 | if (t && ANON_AGGR_TYPE_P (t)) |
72a93143 | 7057 | { |
6bdb8141 | 7058 | fixup_anonymous_aggr (t); |
72a93143 JM |
7059 | |
7060 | if (TYPE_FIELDS (t)) | |
7061 | { | |
7062 | tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0, | |
7063 | NULL_TREE); | |
7064 | finish_anon_union (decl); | |
7065 | } | |
8d08fdba MS |
7066 | } |
7067 | } | |
7068 | \f | |
7069 | /* Decode a "typename", such as "int **", returning a ..._TYPE node. */ | |
7070 | ||
7071 | tree | |
7072 | groktypename (typename) | |
7073 | tree typename; | |
7074 | { | |
7075 | if (TREE_CODE (typename) != TREE_LIST) | |
7076 | return typename; | |
7077 | return grokdeclarator (TREE_VALUE (typename), | |
7078 | TREE_PURPOSE (typename), | |
c11b6f21 | 7079 | TYPENAME, 0, NULL_TREE); |
8d08fdba MS |
7080 | } |
7081 | ||
7082 | /* Decode a declarator in an ordinary declaration or data definition. | |
7083 | This is called as soon as the type information and variable name | |
7084 | have been parsed, before parsing the initializer if any. | |
7085 | Here we create the ..._DECL node, fill in its type, | |
7086 | and put it on the list of decls for the current context. | |
7087 | The ..._DECL node is returned as the value. | |
7088 | ||
7089 | Exception: for arrays where the length is not specified, | |
82580166 | 7090 | the type is left null, to be filled in by `cp_finish_decl'. |
8d08fdba MS |
7091 | |
7092 | Function definitions do not come here; they go to start_function | |
7093 | instead. However, external and forward declarations of functions | |
7094 | do go through here. Structure field declarations are done by | |
7095 | grokfield and not through here. */ | |
7096 | ||
8d08fdba | 7097 | tree |
a1774733 | 7098 | start_decl (declarator, declspecs, initialized, attributes, prefix_attributes) |
8d08fdba MS |
7099 | tree declarator, declspecs; |
7100 | int initialized; | |
a1774733 | 7101 | tree attributes, prefix_attributes; |
8d08fdba MS |
7102 | { |
7103 | register tree decl; | |
7104 | register tree type, tem; | |
7105 | tree context; | |
7106 | extern int have_extern_spec; | |
7107 | extern int used_extern_spec; | |
b17e2870 | 7108 | tree attrlist; |
8d08fdba | 7109 | |
5566b478 MS |
7110 | #if 0 |
7111 | /* See code below that used this. */ | |
8d08fdba | 7112 | int init_written = initialized; |
5566b478 | 7113 | #endif |
8d08fdba | 7114 | |
e92cc029 | 7115 | /* This should only be done once on the top most decl. */ |
8d08fdba MS |
7116 | if (have_extern_spec && !used_extern_spec) |
7117 | { | |
1f8f4a0b MM |
7118 | declspecs = tree_cons (NULL_TREE, get_identifier ("extern"), |
7119 | declspecs); | |
8d08fdba MS |
7120 | used_extern_spec = 1; |
7121 | } | |
7122 | ||
b17e2870 | 7123 | if (attributes || prefix_attributes) |
051e6fd7 | 7124 | attrlist = build_tree_list (attributes, prefix_attributes); |
b17e2870 JM |
7125 | else |
7126 | attrlist = NULL_TREE; | |
7127 | ||
c11b6f21 | 7128 | decl = grokdeclarator (declarator, declspecs, NORMAL, initialized, |
b17e2870 | 7129 | attrlist); |
68642fb6 | 7130 | |
a1774733 | 7131 | if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE) |
8d08fdba MS |
7132 | return NULL_TREE; |
7133 | ||
7134 | type = TREE_TYPE (decl); | |
7135 | ||
44689c12 ML |
7136 | if (type == error_mark_node) |
7137 | return NULL_TREE; | |
7138 | ||
4f1c5b7d | 7139 | context = DECL_CONTEXT (decl); |
8d08fdba | 7140 | |
9a68c51f JM |
7141 | if (initialized && context && TREE_CODE (context) == NAMESPACE_DECL |
7142 | && context != current_namespace && TREE_CODE (decl) == VAR_DECL) | |
7143 | { | |
7144 | /* When parsing the initializer, lookup should use the object's | |
7145 | namespace. */ | |
7146 | push_decl_namespace (context); | |
7147 | } | |
7148 | ||
2c73f9f5 ML |
7149 | /* We are only interested in class contexts, later. */ |
7150 | if (context && TREE_CODE (context) == NAMESPACE_DECL) | |
7151 | context = NULL_TREE; | |
7152 | ||
8d08fdba MS |
7153 | if (initialized) |
7154 | /* Is it valid for this decl to have an initializer at all? | |
7155 | If not, set INITIALIZED to zero, which will indirectly | |
82580166 | 7156 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ |
8d08fdba MS |
7157 | switch (TREE_CODE (decl)) |
7158 | { | |
7159 | case TYPE_DECL: | |
7160 | /* typedef foo = bar means give foo the same type as bar. | |
82580166 | 7161 | We haven't parsed bar yet, so `cp_finish_decl' will fix that up. |
8d08fdba MS |
7162 | Any other case of an initialization in a TYPE_DECL is an error. */ |
7163 | if (pedantic || list_length (declspecs) > 1) | |
7164 | { | |
8251199e | 7165 | cp_error ("typedef `%D' is initialized", decl); |
8d08fdba MS |
7166 | initialized = 0; |
7167 | } | |
7168 | break; | |
7169 | ||
7170 | case FUNCTION_DECL: | |
8251199e | 7171 | cp_error ("function `%#D' is initialized like a variable", decl); |
8d08fdba MS |
7172 | initialized = 0; |
7173 | break; | |
7174 | ||
7175 | default: | |
3e41d13b | 7176 | break; |
8d08fdba MS |
7177 | } |
7178 | ||
8d08fdba MS |
7179 | if (initialized) |
7180 | { | |
a9aedbc2 | 7181 | if (! toplevel_bindings_p () |
8d08fdba | 7182 | && DECL_EXTERNAL (decl)) |
8251199e | 7183 | cp_warning ("declaration of `%#D' has `extern' and is initialized", |
8d08fdba MS |
7184 | decl); |
7185 | DECL_EXTERNAL (decl) = 0; | |
5566b478 | 7186 | if (toplevel_bindings_p ()) |
8d08fdba MS |
7187 | TREE_STATIC (decl) = 1; |
7188 | ||
7189 | /* Tell `pushdecl' this is an initialized decl | |
7190 | even though we don't yet have the initializer expression. | |
82580166 | 7191 | Also tell `cp_finish_decl' it may store the real initializer. */ |
8d08fdba MS |
7192 | DECL_INITIAL (decl) = error_mark_node; |
7193 | } | |
7194 | ||
fa20888b MK |
7195 | #ifdef SET_DEFAULT_DECL_ATTRIBUTES |
7196 | SET_DEFAULT_DECL_ATTRIBUTES (decl, attributes); | |
7197 | #endif | |
68642fb6 | 7198 | |
fa20888b MK |
7199 | /* Set attributes here so if duplicate decl, will have proper attributes. */ |
7200 | cplus_decl_attributes (decl, attributes, prefix_attributes); | |
7201 | ||
d0f062fb | 7202 | if (context && COMPLETE_TYPE_P (complete_type (context))) |
5b605f68 | 7203 | { |
6b400b21 | 7204 | push_nested_class (context, 2); |
e97e5263 | 7205 | |
5b605f68 MS |
7206 | if (TREE_CODE (decl) == VAR_DECL) |
7207 | { | |
7208 | tree field = lookup_field (context, DECL_NAME (decl), 0, 0); | |
7209 | if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL) | |
8251199e | 7210 | cp_error ("`%#D' is not a static member of `%#T'", decl, context); |
e349ee73 MS |
7211 | else |
7212 | { | |
7213 | if (DECL_CONTEXT (field) != context) | |
f2d773a2 | 7214 | { |
cb9a3ff8 | 7215 | cp_pedwarn ("ISO C++ does not permit `%T::%D' to be defined as `%T::%D'", |
f2d773a2 JM |
7216 | DECL_CONTEXT (field), DECL_NAME (decl), |
7217 | context, DECL_NAME (decl)); | |
7218 | DECL_CONTEXT (decl) = DECL_CONTEXT (field); | |
7219 | } | |
75650646 MM |
7220 | /* Static data member are tricky; an in-class initialization |
7221 | still doesn't provide a definition, so the in-class | |
7222 | declaration will have DECL_EXTERNAL set, but will have an | |
7223 | initialization. Thus, duplicate_decls won't warn | |
7224 | about this situation, and so we check here. */ | |
7225 | if (DECL_INITIAL (decl) && DECL_INITIAL (field)) | |
8251199e | 7226 | cp_error ("duplicate initialization of %D", decl); |
e349ee73 MS |
7227 | if (duplicate_decls (decl, field)) |
7228 | decl = field; | |
7229 | } | |
5b605f68 | 7230 | } |
f30432d7 MS |
7231 | else |
7232 | { | |
5566b478 | 7233 | tree field = check_classfn (context, decl); |
f30432d7 MS |
7234 | if (field && duplicate_decls (decl, field)) |
7235 | decl = field; | |
7236 | } | |
7237 | ||
7238 | /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */ | |
dff3e828 | 7239 | DECL_IN_AGGR_P (decl) = 0; |
68642fb6 | 7240 | if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl)) |
1f6e1acc | 7241 | || CLASSTYPE_TEMPLATE_INSTANTIATION (context)) |
84e6233f JM |
7242 | { |
7243 | SET_DECL_TEMPLATE_SPECIALIZATION (decl); | |
7244 | /* [temp.expl.spec] An explicit specialization of a static data | |
7245 | member of a template is a definition if the declaration | |
7246 | includes an initializer; otherwise, it is a declaration. | |
7247 | ||
7248 | We check for processing_specialization so this only applies | |
7249 | to the new specialization syntax. */ | |
7250 | if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization) | |
7251 | DECL_EXTERNAL (decl) = 1; | |
7252 | } | |
f30432d7 | 7253 | |
b7698cf0 | 7254 | if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl)) |
8251199e | 7255 | cp_pedwarn ("declaration of `%#D' outside of class is not definition", |
f30432d7 | 7256 | decl); |
5b605f68 MS |
7257 | } |
7258 | ||
9188c363 MM |
7259 | /* Enter this declaration into the symbol table. */ |
7260 | tem = maybe_push_decl (decl); | |
2ee887f2 | 7261 | |
5156628f | 7262 | if (processing_template_decl) |
cd9f6678 | 7263 | tem = push_template_decl (tem); |
5566b478 | 7264 | |
2ee887f2 | 7265 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a3203465 | 7266 | /* Tell the back-end to use or not use .common as appropriate. If we say |
a50f0918 MS |
7267 | -fconserve-space, we want this to save .data space, at the expense of |
7268 | wrong semantics. If we say -fno-conserve-space, we want this to | |
7269 | produce errors about redefs; to do this we force variables into the | |
7270 | data segment. */ | |
a3203465 | 7271 | DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem); |
2ee887f2 | 7272 | #endif |
68642fb6 | 7273 | |
5156628f | 7274 | if (! processing_template_decl) |
5566b478 | 7275 | start_decl_1 (tem); |
8d08fdba | 7276 | |
8d08fdba MS |
7277 | return tem; |
7278 | } | |
7279 | ||
5566b478 MS |
7280 | void |
7281 | start_decl_1 (decl) | |
7282 | tree decl; | |
8d08fdba | 7283 | { |
5566b478 MS |
7284 | tree type = TREE_TYPE (decl); |
7285 | int initialized = (DECL_INITIAL (decl) != NULL_TREE); | |
8d08fdba | 7286 | |
44689c12 ML |
7287 | if (type == error_mark_node) |
7288 | return; | |
7289 | ||
bd0d5d4a | 7290 | maybe_push_cleanup_level (type); |
5566b478 MS |
7291 | |
7292 | if (initialized) | |
7293 | /* Is it valid for this decl to have an initializer at all? | |
7294 | If not, set INITIALIZED to zero, which will indirectly | |
7295 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ | |
8d08fdba | 7296 | { |
5566b478 MS |
7297 | /* Don't allow initializations for incomplete types except for |
7298 | arrays which might be completed by the initialization. */ | |
d0f062fb | 7299 | if (COMPLETE_TYPE_P (complete_type (type))) |
5566b478 MS |
7300 | ; /* A complete type is ok. */ |
7301 | else if (TREE_CODE (type) != ARRAY_TYPE) | |
8d08fdba | 7302 | { |
8251199e | 7303 | cp_error ("variable `%#D' has initializer but incomplete type", |
5566b478 MS |
7304 | decl); |
7305 | initialized = 0; | |
25eb19ff | 7306 | type = TREE_TYPE (decl) = error_mark_node; |
5566b478 | 7307 | } |
d0f062fb | 7308 | else if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (type)))) |
5566b478 MS |
7309 | { |
7310 | if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)) | |
8251199e | 7311 | cp_error ("elements of array `%#D' have incomplete type", decl); |
5566b478 MS |
7312 | /* else we already gave an error in start_decl. */ |
7313 | initialized = 0; | |
8d08fdba | 7314 | } |
8d08fdba MS |
7315 | } |
7316 | ||
5566b478 MS |
7317 | if (!initialized |
7318 | && TREE_CODE (decl) != TYPE_DECL | |
7319 | && TREE_CODE (decl) != TEMPLATE_DECL | |
07c88314 | 7320 | && type != error_mark_node |
5362b086 | 7321 | && IS_AGGR_TYPE (type) |
07c88314 | 7322 | && ! DECL_EXTERNAL (decl)) |
8d08fdba | 7323 | { |
5156628f | 7324 | if ((! processing_template_decl || ! uses_template_parms (type)) |
d0f062fb | 7325 | && !COMPLETE_TYPE_P (complete_type (type))) |
5566b478 | 7326 | { |
8251199e | 7327 | cp_error ("aggregate `%#D' has incomplete type and cannot be initialized", |
5566b478 MS |
7328 | decl); |
7329 | /* Change the type so that assemble_variable will give | |
7330 | DECL an rtl we can live with: (mem (const_int 0)). */ | |
25eb19ff | 7331 | type = TREE_TYPE (decl) = error_mark_node; |
5566b478 MS |
7332 | } |
7333 | else | |
7334 | { | |
7335 | /* If any base type in the hierarchy of TYPE needs a constructor, | |
7336 | then we set initialized to 1. This way any nodes which are | |
7337 | created for the purposes of initializing this aggregate | |
7338 | will live as long as it does. This is necessary for global | |
7339 | aggregates which do not have their initializers processed until | |
7340 | the end of the file. */ | |
7341 | initialized = TYPE_NEEDS_CONSTRUCTING (type); | |
7342 | } | |
7343 | } | |
7344 | ||
5566b478 MS |
7345 | if (! initialized) |
7346 | DECL_INITIAL (decl) = NULL_TREE; | |
7347 | } | |
7348 | ||
7349 | /* Handle initialization of references. | |
38e01259 | 7350 | These three arguments are from `cp_finish_decl', and have the |
e92cc029 MS |
7351 | same meaning here that they do there. |
7352 | ||
7353 | Quotes on semantics can be found in ARM 8.4.3. */ | |
7354 | ||
8e4ce833 | 7355 | static tree |
a703fb38 | 7356 | grok_reference_init (decl, type, init) |
5566b478 | 7357 | tree decl, type, init; |
5566b478 MS |
7358 | { |
7359 | tree tmp; | |
7360 | ||
7361 | if (init == NULL_TREE) | |
7362 | { | |
7363 | if ((DECL_LANG_SPECIFIC (decl) == 0 | |
7364 | || DECL_IN_AGGR_P (decl) == 0) | |
7365 | && ! DECL_THIS_EXTERN (decl)) | |
ed5511d9 | 7366 | cp_error ("`%D' declared as reference but not initialized", decl); |
8e4ce833 | 7367 | return NULL_TREE; |
5566b478 MS |
7368 | } |
7369 | ||
7370 | if (init == error_mark_node) | |
8e4ce833 | 7371 | return NULL_TREE; |
5566b478 | 7372 | |
ed5511d9 | 7373 | if (TREE_CODE (init) == CONSTRUCTOR) |
5566b478 | 7374 | { |
cb9a3ff8 | 7375 | cp_error ("ISO C++ forbids use of initializer list to initialize reference `%D'", decl); |
8e4ce833 | 7376 | return NULL_TREE; |
8d08fdba MS |
7377 | } |
7378 | ||
7379 | if (TREE_CODE (init) == TREE_LIST) | |
7380 | init = build_compound_expr (init); | |
8d08fdba | 7381 | |
8ccc31eb MS |
7382 | if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE) |
7383 | init = convert_from_reference (init); | |
7384 | ||
8d08fdba MS |
7385 | if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE |
7386 | && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE) | |
7387 | { | |
a3203465 | 7388 | /* Note: default conversion is only called in very special cases. */ |
8d08fdba MS |
7389 | init = default_conversion (init); |
7390 | } | |
68642fb6 | 7391 | |
24bef158 MM |
7392 | /* Convert INIT to the reference type TYPE. This may involve the |
7393 | creation of a temporary, whose lifetime must be the same as that | |
7394 | of the reference. If so, a DECL_STMT for the temporary will be | |
7395 | added just after the DECL_STMT for DECL. That's why we don't set | |
7396 | DECL_INITIAL for local references (instead assigning to them | |
7397 | explicitly); we need to allow the temporary to be initialized | |
7398 | first. */ | |
a3203465 | 7399 | tmp = convert_to_reference |
9a3b49ac | 7400 | (type, init, CONV_IMPLICIT, |
ce7715bd JM |
7401 | LOOKUP_ONLYCONVERTING|LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, |
7402 | decl); | |
8d08fdba | 7403 | |
a3203465 | 7404 | if (tmp == error_mark_node) |
8e4ce833 JJ |
7405 | return NULL_TREE; |
7406 | else if (tmp == NULL_TREE) | |
8d08fdba | 7407 | { |
8251199e | 7408 | cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init)); |
8e4ce833 | 7409 | return NULL_TREE; |
8d08fdba | 7410 | } |
8d08fdba | 7411 | |
8e4ce833 JJ |
7412 | if (TREE_STATIC (decl) && !TREE_CONSTANT (tmp)) |
7413 | return tmp; | |
7414 | ||
7415 | if (building_stmt_tree ()) | |
8d08fdba | 7416 | { |
8e4ce833 JJ |
7417 | /* Initialize the declaration. */ |
7418 | tmp = build (INIT_EXPR, TREE_TYPE (decl), decl, tmp); | |
7419 | finish_expr_stmt (tmp); | |
8d08fdba | 7420 | } |
8e4ce833 JJ |
7421 | else |
7422 | DECL_INITIAL (decl) = tmp; | |
7423 | ||
7424 | return NULL_TREE; | |
8d08fdba MS |
7425 | } |
7426 | ||
6060a796 MS |
7427 | /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from |
7428 | mucking with forces it does not comprehend (i.e. initialization with a | |
7429 | constructor). If we are at global scope and won't go into COMMON, fill | |
7430 | it in with a dummy CONSTRUCTOR to force the variable into .data; | |
7431 | otherwise we can use error_mark_node. */ | |
7432 | ||
28cbf42c MS |
7433 | static tree |
7434 | obscure_complex_init (decl, init) | |
7435 | tree decl, init; | |
6060a796 | 7436 | { |
28cbf42c MS |
7437 | if (! flag_no_inline && TREE_STATIC (decl)) |
7438 | { | |
7439 | if (extract_init (decl, init)) | |
7440 | return NULL_TREE; | |
7441 | } | |
7442 | ||
2ee887f2 | 7443 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a9aedbc2 | 7444 | if (toplevel_bindings_p () && ! DECL_COMMON (decl)) |
6060a796 MS |
7445 | DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE, |
7446 | NULL_TREE); | |
7447 | else | |
2ee887f2 | 7448 | #endif |
6060a796 | 7449 | DECL_INITIAL (decl) = error_mark_node; |
28cbf42c MS |
7450 | |
7451 | return init; | |
6060a796 MS |
7452 | } |
7453 | ||
27778b73 MM |
7454 | /* When parsing `int a[] = {1, 2};' we don't know the size of the |
7455 | array until we finish parsing the initializer. If that's the | |
7456 | situation we're in, update DECL accordingly. */ | |
7457 | ||
7458 | static void | |
7459 | maybe_deduce_size_from_array_init (decl, init) | |
7460 | tree decl; | |
7461 | tree init; | |
7462 | { | |
7463 | tree type = TREE_TYPE (decl); | |
7464 | ||
7465 | if (TREE_CODE (type) == ARRAY_TYPE | |
7466 | && TYPE_DOMAIN (type) == NULL_TREE | |
7467 | && TREE_CODE (decl) != TYPE_DECL) | |
7468 | { | |
f2ae0c45 JM |
7469 | /* do_default is really a C-ism to deal with tentative definitions. |
7470 | But let's leave it here to ease the eventual merge. */ | |
7471 | int do_default = !DECL_EXTERNAL (decl); | |
27778b73 MM |
7472 | tree initializer = init ? init : DECL_INITIAL (decl); |
7473 | int failure = complete_array_type (type, initializer, do_default); | |
7474 | ||
7475 | if (failure == 1) | |
7476 | cp_error ("initializer fails to determine size of `%D'", decl); | |
7477 | ||
7478 | if (failure == 2) | |
7479 | { | |
7480 | if (do_default) | |
7481 | cp_error ("array size missing in `%D'", decl); | |
7482 | /* If a `static' var's size isn't known, make it extern as | |
7483 | well as static, so it does not get allocated. If it's not | |
7484 | `static', then don't mark it extern; finish_incomplete_decl | |
7485 | will give it a default size and it will get allocated. */ | |
7486 | else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl)) | |
7487 | DECL_EXTERNAL (decl) = 1; | |
7488 | } | |
7489 | ||
7490 | if (pedantic && TYPE_DOMAIN (type) != NULL_TREE | |
7491 | && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), | |
7492 | integer_zero_node)) | |
7493 | cp_error ("zero-size array `%D'", decl); | |
7494 | ||
7495 | layout_decl (decl, 0); | |
7496 | } | |
7497 | } | |
7498 | ||
7499 | /* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue | |
57b52417 | 7500 | any appropriate error messages regarding the layout. */ |
27778b73 | 7501 | |
57b52417 MM |
7502 | static void |
7503 | layout_var_decl (decl) | |
27778b73 | 7504 | tree decl; |
27778b73 | 7505 | { |
57b52417 | 7506 | tree type = TREE_TYPE (decl); |
c95cd22e | 7507 | #if 0 |
57b52417 | 7508 | tree ttype = target_type (type); |
c95cd22e | 7509 | #endif |
57b52417 MM |
7510 | |
7511 | /* If we haven't already layed out this declaration, do so now. | |
7512 | Note that we must not call complete type for an external object | |
7513 | because it's type might involve templates that we are not | |
68642fb6 | 7514 | supposed to isntantiate yet. (And it's perfectly legal to say |
57b52417 MM |
7515 | `extern X x' for some incomplete type `X'.) */ |
7516 | if (!DECL_EXTERNAL (decl)) | |
7517 | complete_type (type); | |
d0f062fb | 7518 | if (!DECL_SIZE (decl) && COMPLETE_TYPE_P (type)) |
27778b73 MM |
7519 | layout_decl (decl, 0); |
7520 | ||
c82dbd95 | 7521 | if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE) |
27778b73 MM |
7522 | { |
7523 | /* An automatic variable with an incomplete type: that is an error. | |
7524 | Don't talk about array types here, since we took care of that | |
7525 | message in grokdeclarator. */ | |
7526 | cp_error ("storage size of `%D' isn't known", decl); | |
7527 | TREE_TYPE (decl) = error_mark_node; | |
7528 | } | |
ae673f14 JM |
7529 | #if 0 |
7530 | /* Keep this code around in case we later want to control debug info | |
7531 | based on whether a type is "used". (jason 1999-11-11) */ | |
7532 | ||
27778b73 MM |
7533 | else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype)) |
7534 | /* Let debugger know it should output info for this type. */ | |
7535 | note_debug_info_needed (ttype); | |
7536 | ||
7537 | if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl)) | |
7538 | note_debug_info_needed (DECL_CONTEXT (decl)); | |
ae673f14 | 7539 | #endif |
27778b73 MM |
7540 | |
7541 | if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl)) | |
7542 | && DECL_SIZE (decl) != NULL_TREE | |
7543 | && ! TREE_CONSTANT (DECL_SIZE (decl))) | |
7544 | { | |
7545 | if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST) | |
7546 | constant_expression_warning (DECL_SIZE (decl)); | |
7547 | else | |
7548 | cp_error ("storage size of `%D' isn't constant", decl); | |
7549 | } | |
8e4ce833 JJ |
7550 | |
7551 | if (TREE_STATIC (decl) | |
7552 | && !DECL_ARTIFICIAL (decl) | |
7553 | && current_function_decl | |
7554 | && DECL_CONTEXT (decl) == current_function_decl) | |
7555 | push_local_name (decl); | |
27778b73 MM |
7556 | } |
7557 | ||
27778b73 MM |
7558 | /* If a local static variable is declared in an inline function, or if |
7559 | we have a weak definition, we must endeavor to create only one | |
7560 | instance of the variable at link-time. */ | |
7561 | ||
7562 | static void | |
7563 | maybe_commonize_var (decl) | |
7564 | tree decl; | |
7565 | { | |
7566 | /* Static data in a function with comdat linkage also has comdat | |
7567 | linkage. */ | |
7568 | if (TREE_STATIC (decl) | |
7569 | /* Don't mess with __FUNCTION__. */ | |
cf74fb86 | 7570 | && ! DECL_ARTIFICIAL (decl) |
27778b73 MM |
7571 | && current_function_decl |
7572 | && DECL_CONTEXT (decl) == current_function_decl | |
79065db2 | 7573 | && (DECL_DECLARED_INLINE_P (current_function_decl) |
27778b73 MM |
7574 | || DECL_TEMPLATE_INSTANTIATION (current_function_decl)) |
7575 | && TREE_PUBLIC (current_function_decl)) | |
7576 | { | |
27778b73 MM |
7577 | /* If flag_weak, we don't need to mess with this, as we can just |
7578 | make the function weak, and let it refer to its unique local | |
7579 | copy. This works because we don't allow the function to be | |
7580 | inlined. */ | |
7581 | if (! flag_weak) | |
7582 | { | |
7583 | if (DECL_INTERFACE_KNOWN (current_function_decl)) | |
7584 | { | |
7585 | TREE_PUBLIC (decl) = 1; | |
7586 | DECL_EXTERNAL (decl) = DECL_EXTERNAL (current_function_decl); | |
7587 | } | |
7588 | else if (DECL_INITIAL (decl) == NULL_TREE | |
7589 | || DECL_INITIAL (decl) == error_mark_node) | |
7590 | { | |
7591 | TREE_PUBLIC (decl) = 1; | |
7592 | DECL_COMMON (decl) = 1; | |
7593 | } | |
7594 | /* else we lose. We can only do this if we can use common, | |
7595 | which we can't if it has been initialized. */ | |
7596 | ||
92643fea | 7597 | if (!TREE_PUBLIC (decl)) |
27778b73 MM |
7598 | { |
7599 | cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl); | |
7600 | cp_warning_at (" you can work around this by removing the initializer", decl); | |
7601 | } | |
7602 | } | |
8e4ce833 JJ |
7603 | else |
7604 | comdat_linkage (decl); | |
27778b73 MM |
7605 | } |
7606 | else if (DECL_LANG_SPECIFIC (decl) && DECL_COMDAT (decl)) | |
7607 | /* Set it up again; we might have set DECL_INITIAL since the last | |
7608 | time. */ | |
7609 | comdat_linkage (decl); | |
7610 | } | |
7611 | ||
91063b51 MM |
7612 | /* Issue an error message if DECL is an uninitialized const variable. */ |
7613 | ||
7614 | static void | |
7615 | check_for_uninitialized_const_var (decl) | |
7616 | tree decl; | |
7617 | { | |
7618 | tree type = TREE_TYPE (decl); | |
7619 | ||
7620 | /* ``Unless explicitly declared extern, a const object does not have | |
7621 | external linkage and must be initialized. ($8.4; $12.1)'' ARM | |
7622 | 7.1.6 */ | |
7623 | if (TREE_CODE (decl) == VAR_DECL | |
7624 | && TREE_CODE (type) != REFERENCE_TYPE | |
7625 | && CP_TYPE_CONST_P (type) | |
7626 | && !TYPE_NEEDS_CONSTRUCTING (type) | |
7627 | && !DECL_INITIAL (decl)) | |
7628 | cp_error ("uninitialized const `%D'", decl); | |
7629 | } | |
7630 | ||
c82dbd95 MM |
7631 | /* Verify INIT (the initializer for DECL), and record the |
7632 | initialization in DECL_INITIAL, if appropriate. Returns a new | |
7633 | value for INIT. */ | |
27778b73 | 7634 | |
c82dbd95 MM |
7635 | static tree |
7636 | check_initializer (decl, init) | |
27778b73 | 7637 | tree decl; |
c82dbd95 | 7638 | tree init; |
27778b73 | 7639 | { |
27778b73 MM |
7640 | tree type; |
7641 | ||
7642 | if (TREE_CODE (decl) == FIELD_DECL) | |
c82dbd95 | 7643 | return init; |
27778b73 | 7644 | |
fc0e7bf5 MM |
7645 | type = TREE_TYPE (decl); |
7646 | ||
27778b73 MM |
7647 | /* If `start_decl' didn't like having an initialization, ignore it now. */ |
7648 | if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE) | |
7649 | init = NULL_TREE; | |
27778b73 | 7650 | |
c82dbd95 | 7651 | /* Check the initializer. */ |
27778b73 MM |
7652 | if (init) |
7653 | { | |
c82dbd95 MM |
7654 | /* Things that are going to be initialized need to have complete |
7655 | type. */ | |
7656 | TREE_TYPE (decl) = type = complete_type (TREE_TYPE (decl)); | |
7657 | ||
7658 | if (type == error_mark_node) | |
7659 | /* We will have already complained. */ | |
7660 | init = NULL_TREE; | |
d0f062fb | 7661 | else if (COMPLETE_TYPE_P (type) && !TREE_CONSTANT (TYPE_SIZE (type))) |
27778b73 MM |
7662 | { |
7663 | cp_error ("variable-sized object `%D' may not be initialized", decl); | |
7664 | init = NULL_TREE; | |
7665 | } | |
c82dbd95 | 7666 | else if (TREE_CODE (type) == ARRAY_TYPE |
d0f062fb | 7667 | && !COMPLETE_TYPE_P (TREE_TYPE (type))) |
27778b73 MM |
7668 | { |
7669 | cp_error ("elements of array `%#D' have incomplete type", decl); | |
7670 | init = NULL_TREE; | |
7671 | } | |
d0f062fb | 7672 | else if (!COMPLETE_TYPE_P (type)) |
c82dbd95 MM |
7673 | { |
7674 | cp_error ("`%D' has incomplete type", decl); | |
7675 | TREE_TYPE (decl) = error_mark_node; | |
7676 | init = NULL_TREE; | |
7677 | } | |
27778b73 MM |
7678 | } |
7679 | ||
7680 | if (TREE_CODE (decl) == CONST_DECL) | |
7681 | { | |
7682 | my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148); | |
7683 | ||
7684 | DECL_INITIAL (decl) = init; | |
7685 | ||
27778b73 MM |
7686 | my_friendly_assert (init != NULL_TREE, 149); |
7687 | init = NULL_TREE; | |
7688 | } | |
c82dbd95 MM |
7689 | else if (!DECL_EXTERNAL (decl) && TREE_CODE (type) == REFERENCE_TYPE) |
7690 | { | |
8e4ce833 JJ |
7691 | init = grok_reference_init (decl, type, init); |
7692 | if (init) | |
7693 | init = obscure_complex_init (decl, init); | |
c82dbd95 | 7694 | } |
27778b73 MM |
7695 | else if (init) |
7696 | { | |
7697 | if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type)) | |
7698 | { | |
7699 | if (TREE_CODE (type) == ARRAY_TYPE) | |
7700 | init = digest_init (type, init, (tree *) 0); | |
7701 | else if (TREE_CODE (init) == CONSTRUCTOR | |
7702 | && TREE_HAS_CONSTRUCTOR (init)) | |
7703 | { | |
7704 | if (TYPE_NON_AGGREGATE_CLASS (type)) | |
7705 | { | |
7706 | cp_error ("`%D' must be initialized by constructor, not by `{...}'", | |
7707 | decl); | |
7708 | init = error_mark_node; | |
7709 | } | |
7710 | else | |
7711 | goto dont_use_constructor; | |
7712 | } | |
7713 | } | |
7714 | else | |
7715 | { | |
7716 | dont_use_constructor: | |
7717 | if (TREE_CODE (init) != TREE_VEC) | |
7718 | init = store_init_value (decl, init); | |
7719 | } | |
7720 | ||
7721 | if (init) | |
7722 | /* We must hide the initializer so that expand_decl | |
7723 | won't try to do something it does not understand. */ | |
7724 | init = obscure_complex_init (decl, init); | |
7725 | } | |
7726 | else if (DECL_EXTERNAL (decl)) | |
7727 | ; | |
2f939d94 | 7728 | else if (TYPE_P (type) |
27778b73 MM |
7729 | && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type))) |
7730 | { | |
7731 | tree core_type = strip_array_types (type); | |
7732 | ||
7733 | if (! TYPE_NEEDS_CONSTRUCTING (core_type)) | |
7734 | { | |
7735 | if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type)) | |
7736 | cp_error ("structure `%D' with uninitialized const members", decl); | |
7737 | if (CLASSTYPE_REF_FIELDS_NEED_INIT (core_type)) | |
7738 | cp_error ("structure `%D' with uninitialized reference members", | |
7739 | decl); | |
7740 | } | |
7741 | ||
7742 | check_for_uninitialized_const_var (decl); | |
7743 | ||
d0f062fb | 7744 | if (COMPLETE_TYPE_P (type) && TYPE_NEEDS_CONSTRUCTING (type)) |
27778b73 MM |
7745 | init = obscure_complex_init (decl, NULL_TREE); |
7746 | ||
7747 | } | |
7748 | else | |
7749 | check_for_uninitialized_const_var (decl); | |
68642fb6 | 7750 | |
c82dbd95 | 7751 | return init; |
27778b73 MM |
7752 | } |
7753 | ||
7754 | /* If DECL is not a local variable, give it RTL. */ | |
7755 | ||
7756 | static void | |
7757 | make_rtl_for_nonlocal_decl (decl, init, asmspec) | |
7758 | tree decl; | |
7759 | tree init; | |
7760 | const char *asmspec; | |
7761 | { | |
95ee998c MM |
7762 | int toplev = toplevel_bindings_p (); |
7763 | int defer_p; | |
27778b73 | 7764 | |
f39ee884 MM |
7765 | /* Handle non-variables up front. */ |
7766 | if (TREE_CODE (decl) != VAR_DECL) | |
7767 | { | |
7768 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); | |
7769 | return; | |
7770 | } | |
7771 | ||
95ee998c MM |
7772 | /* If we see a class member here, it should be a static data |
7773 | member. */ | |
7774 | if (DECL_LANG_SPECIFIC (decl) && DECL_IN_AGGR_P (decl)) | |
7775 | { | |
7776 | my_friendly_assert (TREE_STATIC (decl), 19990828); | |
7777 | /* An in-class declaration of a static data member should be | |
7778 | external; it is only a declaration, and not a definition. */ | |
7779 | if (init == NULL_TREE) | |
7780 | my_friendly_assert (DECL_EXTERNAL (decl), 20000723); | |
7781 | } | |
7782 | ||
f39ee884 MM |
7783 | /* Set the DECL_ASSEMBLER_NAME for the variable. */ |
7784 | if (asmspec) | |
92643fea | 7785 | SET_DECL_ASSEMBLER_NAME (decl, get_identifier (asmspec)); |
f39ee884 | 7786 | |
95ee998c MM |
7787 | /* We don't create any RTL for local variables. */ |
7788 | if (DECL_FUNCTION_SCOPE_P (decl) && !TREE_STATIC (decl)) | |
7789 | return; | |
27778b73 | 7790 | |
95ee998c MM |
7791 | /* We defer emission of local statics until the corresponding |
7792 | DECL_STMT is expanded. */ | |
7793 | defer_p = DECL_FUNCTION_SCOPE_P (decl) || DECL_VIRTUAL_P (decl); | |
7794 | ||
7795 | /* We try to defer namespace-scope static constants so that they are | |
7796 | not emitted into the object file unncessarily. */ | |
7797 | if (!DECL_VIRTUAL_P (decl) | |
7798 | && TREE_READONLY (decl) | |
7799 | && DECL_INITIAL (decl) != NULL_TREE | |
7800 | && DECL_INITIAL (decl) != error_mark_node | |
7801 | && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)) | |
7802 | && toplev | |
7803 | && !TREE_PUBLIC (decl)) | |
7804 | { | |
7805 | /* Fool with the linkage according to #pragma interface. */ | |
7806 | if (!interface_unknown) | |
27778b73 | 7807 | { |
95ee998c MM |
7808 | TREE_PUBLIC (decl) = 1; |
7809 | DECL_EXTERNAL (decl) = interface_only; | |
27778b73 | 7810 | } |
27778b73 | 7811 | |
95ee998c | 7812 | defer_p = 1; |
27778b73 | 7813 | } |
95ee998c | 7814 | |
92643fea MM |
7815 | /* If we're deferring the variable, we only need to make RTL if |
7816 | there's an ASMSPEC. Otherwise, we'll lazily create it later when | |
7817 | we need it. (There's no way to lazily create RTL for things that | |
7818 | have assembly specs because the information about the specifier | |
7819 | isn't stored in the tree, yet) */ | |
7820 | if (defer_p && asmspec) | |
6c418184 | 7821 | make_decl_rtl (decl, asmspec); |
95ee998c | 7822 | /* If we're not deferring, go ahead and assemble the variable. */ |
92643fea | 7823 | else if (!defer_p) |
27778b73 | 7824 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
27778b73 MM |
7825 | } |
7826 | ||
7827 | /* The old ARM scoping rules injected variables declared in the | |
7828 | initialization statement of a for-statement into the surrounding | |
7829 | scope. We support this usage, in order to be backward-compatible. | |
7830 | DECL is a just-declared VAR_DECL; if necessary inject its | |
7831 | declaration into the surrounding scope. */ | |
7832 | ||
b7b8bcd2 | 7833 | void |
27778b73 MM |
7834 | maybe_inject_for_scope_var (decl) |
7835 | tree decl; | |
7836 | { | |
c3783399 NS |
7837 | if (!DECL_NAME (decl)) |
7838 | return; | |
5362b086 | 7839 | |
27778b73 MM |
7840 | if (current_binding_level->is_for_scope) |
7841 | { | |
68642fb6 | 7842 | struct binding_level *outer |
27778b73 MM |
7843 | = current_binding_level->level_chain; |
7844 | ||
7845 | /* Check to see if the same name is already bound at the outer | |
7846 | level, either because it was directly declared, or because a | |
7847 | dead for-decl got preserved. In either case, the code would | |
7848 | not have been valid under the ARM scope rules, so clear | |
7849 | is_for_scope for the current_binding_level. | |
7850 | ||
7851 | Otherwise, we need to preserve the temp slot for decl to last | |
7852 | into the outer binding level. */ | |
7853 | ||
68642fb6 | 7854 | tree outer_binding |
27778b73 | 7855 | = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (decl))); |
68642fb6 | 7856 | |
27778b73 | 7857 | if (outer_binding && BINDING_LEVEL (outer_binding) == outer |
68642fb6 | 7858 | && (TREE_CODE (BINDING_VALUE (outer_binding)) |
27778b73 MM |
7859 | == VAR_DECL) |
7860 | && DECL_DEAD_FOR_LOCAL (BINDING_VALUE (outer_binding))) | |
7861 | { | |
7862 | BINDING_VALUE (outer_binding) | |
7863 | = DECL_SHADOWED_FOR_VAR (BINDING_VALUE (outer_binding)); | |
7864 | current_binding_level->is_for_scope = 0; | |
7865 | } | |
7866 | else if (DECL_IN_MEMORY_P (decl)) | |
7867 | preserve_temp_slots (DECL_RTL (decl)); | |
7868 | } | |
7869 | } | |
7870 | ||
ed5511d9 | 7871 | /* Generate code to initialize DECL (a local variable). */ |
27778b73 | 7872 | |
b7b8bcd2 MM |
7873 | void |
7874 | initialize_local_var (decl, init, flags) | |
27778b73 MM |
7875 | tree decl; |
7876 | tree init; | |
27778b73 MM |
7877 | int flags; |
7878 | { | |
9ed9e79a | 7879 | tree type = TREE_TYPE (decl); |
27778b73 | 7880 | |
9ed9e79a MM |
7881 | /* If the type is bogus, don't bother initializing the variable. */ |
7882 | if (type == error_mark_node) | |
7883 | return; | |
b7b8bcd2 | 7884 | |
b7b8bcd2 MM |
7885 | if (DECL_SIZE (decl) == NULL_TREE && !TREE_STATIC (decl)) |
7886 | { | |
7887 | /* If we used it already as memory, it must stay in memory. */ | |
7888 | DECL_INITIAL (decl) = NULL_TREE; | |
7889 | TREE_ADDRESSABLE (decl) = TREE_USED (decl); | |
7890 | } | |
7891 | ||
9ed9e79a MM |
7892 | /* Local statics are handled differently from ordinary automatic |
7893 | variables. */ | |
7894 | if (TREE_STATIC (decl)) | |
7895 | { | |
7896 | if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE | |
834c6dff | 7897 | || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) |
9ed9e79a MM |
7898 | expand_static_init (decl, init); |
7899 | return; | |
7900 | } | |
7901 | ||
27778b73 MM |
7902 | if (DECL_SIZE (decl) && type != error_mark_node) |
7903 | { | |
7904 | int already_used; | |
68642fb6 | 7905 | |
27778b73 | 7906 | /* Compute and store the initial value. */ |
27778b73 MM |
7907 | already_used = TREE_USED (decl) || TREE_USED (type); |
7908 | ||
7909 | if (init || TYPE_NEEDS_CONSTRUCTING (type)) | |
7910 | { | |
24bef158 MM |
7911 | int saved_stmts_are_full_exprs_p; |
7912 | ||
3a0d3e1e | 7913 | my_friendly_assert (building_stmt_tree (), 20000906); |
f2c5f623 | 7914 | saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p (); |
ae499cce | 7915 | current_stmt_tree ()->stmts_are_full_exprs_p = 1; |
3a0d3e1e | 7916 | finish_expr_stmt (build_aggr_init (decl, init, flags)); |
5362b086 | 7917 | current_stmt_tree ()->stmts_are_full_exprs_p = |
ae499cce | 7918 | saved_stmts_are_full_exprs_p; |
27778b73 MM |
7919 | } |
7920 | ||
7921 | /* Set this to 0 so we can tell whether an aggregate which was | |
7922 | initialized was ever used. Don't do this if it has a | |
7923 | destructor, so we don't complain about the 'resource | |
b7b8bcd2 MM |
7924 | allocation is initialization' idiom. Now set |
7925 | attribute((unused)) on types so decls of that type will be | |
7926 | marked used. (see TREE_USED, above.) */ | |
27778b73 MM |
7927 | if (TYPE_NEEDS_CONSTRUCTING (type) |
7928 | && ! already_used | |
834c6dff | 7929 | && TYPE_HAS_TRIVIAL_DESTRUCTOR (type) |
27778b73 MM |
7930 | && DECL_NAME (decl)) |
7931 | TREE_USED (decl) = 0; | |
b7b8bcd2 | 7932 | else if (already_used) |
27778b73 MM |
7933 | TREE_USED (decl) = 1; |
7934 | } | |
24bef158 | 7935 | } |
27778b73 | 7936 | |
24bef158 MM |
7937 | /* Generate code to destroy DECL (a local variable). */ |
7938 | ||
68642fb6 | 7939 | static void |
24bef158 MM |
7940 | destroy_local_var (decl) |
7941 | tree decl; | |
7942 | { | |
9d85d30c MM |
7943 | tree type = TREE_TYPE (decl); |
7944 | tree cleanup; | |
7945 | ||
7946 | /* Only variables get cleaned up. */ | |
7947 | if (TREE_CODE (decl) != VAR_DECL) | |
7948 | return; | |
68642fb6 | 7949 | |
9d85d30c | 7950 | /* And only things with destructors need cleaning up. */ |
655dc6ee JM |
7951 | if (type == error_mark_node |
7952 | || TYPE_HAS_TRIVIAL_DESTRUCTOR (type)) | |
9d85d30c MM |
7953 | return; |
7954 | ||
7955 | if (TREE_CODE (decl) == VAR_DECL && | |
7956 | (DECL_EXTERNAL (decl) || TREE_STATIC (decl))) | |
7957 | /* We don't clean up things that aren't defined in this | |
7958 | translation unit, or that need a static cleanup. The latter | |
7959 | are handled by finish_file. */ | |
7960 | return; | |
68642fb6 | 7961 | |
9d85d30c MM |
7962 | /* Compute the cleanup. */ |
7963 | cleanup = maybe_build_cleanup (decl); | |
27778b73 | 7964 | |
b7b8bcd2 | 7965 | /* Record the cleanup required for this declaration. */ |
24bef158 MM |
7966 | if (DECL_SIZE (decl) && TREE_TYPE (decl) != error_mark_node |
7967 | && cleanup) | |
7968 | finish_decl_cleanup (decl, cleanup); | |
7969 | } | |
7970 | ||
8d08fdba MS |
7971 | /* Finish processing of a declaration; |
7972 | install its line number and initial value. | |
7973 | If the length of an array type is not known before, | |
7974 | it must be determined now, from the initial value, or it is an error. | |
7975 | ||
8b27e9ef | 7976 | INIT holds the value of an initializer that should be allowed to escape |
8d08fdba MS |
7977 | the normal rules. |
7978 | ||
920f9474 | 7979 | FLAGS is LOOKUP_ONLYCONVERTING if the = init syntax was used, else 0 |
f78c7bc6 | 7980 | if the (init) syntax was used. */ |
8d08fdba MS |
7981 | |
7982 | void | |
cd9f6678 | 7983 | cp_finish_decl (decl, init, asmspec_tree, flags) |
8d08fdba MS |
7984 | tree decl, init; |
7985 | tree asmspec_tree; | |
6060a796 | 7986 | int flags; |
8d08fdba MS |
7987 | { |
7988 | register tree type; | |
27778b73 | 7989 | tree ttype = NULL_TREE; |
9c0758dd | 7990 | const char *asmspec = NULL; |
8d08fdba MS |
7991 | int was_readonly = 0; |
7992 | ||
8d08fdba MS |
7993 | if (! decl) |
7994 | { | |
7995 | if (init) | |
8251199e | 7996 | error ("assignment (not initialization) in declaration"); |
8d08fdba MS |
7997 | return; |
7998 | } | |
7999 | ||
a4443a08 | 8000 | /* If a name was specified, get the string. */ |
8d08fdba | 8001 | if (asmspec_tree) |
8d08fdba | 8002 | asmspec = TREE_STRING_POINTER (asmspec_tree); |
8d08fdba | 8003 | |
2c73f9f5 ML |
8004 | if (init && TREE_CODE (init) == NAMESPACE_DECL) |
8005 | { | |
920f9474 | 8006 | cp_error ("cannot initialize `%D' to namespace `%D'", |
2c73f9f5 ML |
8007 | decl, init); |
8008 | init = NULL_TREE; | |
8009 | } | |
8010 | ||
6ba89f8e | 8011 | if (current_class_type |
4f1c5b7d | 8012 | && CP_DECL_CONTEXT (decl) == current_class_type |
6ba89f8e MM |
8013 | && TYPE_BEING_DEFINED (current_class_type) |
8014 | && (DECL_INITIAL (decl) || init)) | |
3febd123 | 8015 | DECL_INITIALIZED_IN_CLASS_P (decl) = 1; |
6ba89f8e | 8016 | |
68642fb6 | 8017 | if (TREE_CODE (decl) == VAR_DECL |
9a68c51f JM |
8018 | && DECL_CONTEXT (decl) |
8019 | && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL | |
8020 | && DECL_CONTEXT (decl) != current_namespace | |
8021 | && init) | |
8022 | { | |
8023 | /* Leave the namespace of the object. */ | |
8024 | pop_decl_namespace (); | |
8025 | } | |
8026 | ||
c82dbd95 | 8027 | type = TREE_TYPE (decl); |
8d08fdba | 8028 | |
f376e137 | 8029 | if (type == error_mark_node) |
cd9f6678 | 8030 | return; |
5362b086 | 8031 | |
24bef158 | 8032 | /* Add this declaration to the statement-tree. */ |
5362b086 | 8033 | if (building_stmt_tree () |
44835fdd MM |
8034 | && at_function_scope_p () |
8035 | && TREE_CODE (decl) != RESULT_DECL) | |
24bef158 MM |
8036 | add_decl_stmt (decl); |
8037 | ||
a7a7710d NS |
8038 | if (TYPE_HAS_MUTABLE_P (type)) |
8039 | TREE_READONLY (decl) = 0; | |
24bef158 | 8040 | |
5156628f | 8041 | if (processing_template_decl) |
5566b478 MS |
8042 | { |
8043 | if (init && DECL_INITIAL (decl)) | |
2a1e9fdd | 8044 | DECL_INITIAL (decl) = init; |
5566b478 MS |
8045 | goto finish_end0; |
8046 | } | |
3e41d13b | 8047 | |
27778b73 MM |
8048 | /* Parameters are handled by store_parm_decls, not cp_finish_decl. */ |
8049 | my_friendly_assert (TREE_CODE (decl) != PARM_DECL, 19990828); | |
8050 | ||
8d08fdba MS |
8051 | /* Take care of TYPE_DECLs up front. */ |
8052 | if (TREE_CODE (decl) == TYPE_DECL) | |
8053 | { | |
8054 | if (init && DECL_INITIAL (decl)) | |
8055 | { | |
8056 | /* typedef foo = bar; store the type of bar as the type of foo. */ | |
8057 | TREE_TYPE (decl) = type = TREE_TYPE (init); | |
8058 | DECL_INITIAL (decl) = init = NULL_TREE; | |
8059 | } | |
a0a33927 MS |
8060 | if (type != error_mark_node |
8061 | && IS_AGGR_TYPE (type) && DECL_NAME (decl)) | |
8d08fdba MS |
8062 | { |
8063 | if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type) | |
8251199e | 8064 | cp_warning ("shadowing previous type declaration of `%#D'", decl); |
8d08fdba MS |
8065 | set_identifier_type_value (DECL_NAME (decl), type); |
8066 | CLASSTYPE_GOT_SEMICOLON (type) = 1; | |
8067 | } | |
8068 | GNU_xref_decl (current_function_decl, decl); | |
cffa8729 MS |
8069 | |
8070 | /* If we have installed this as the canonical typedef for this | |
8071 | type, and that type has not been defined yet, delay emitting | |
956d6950 | 8072 | the debug information for it, as we will emit it later. */ |
d2e5ee5c | 8073 | if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl |
d0f062fb | 8074 | && !COMPLETE_TYPE_P (TREE_TYPE (decl))) |
cffa8729 MS |
8075 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; |
8076 | ||
8d08fdba | 8077 | rest_of_decl_compilation (decl, NULL_PTR, |
5566b478 | 8078 | DECL_CONTEXT (decl) == NULL_TREE, at_eof); |
8d08fdba MS |
8079 | goto finish_end; |
8080 | } | |
3e41d13b | 8081 | |
8d08fdba | 8082 | if (TREE_CODE (decl) != FUNCTION_DECL) |
3e41d13b | 8083 | ttype = target_type (type); |
8d08fdba MS |
8084 | |
8085 | if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl) | |
8086 | && TYPE_NEEDS_CONSTRUCTING (type)) | |
8087 | { | |
8d08fdba MS |
8088 | /* Currently, GNU C++ puts constants in text space, making them |
8089 | impossible to initialize. In the future, one would hope for | |
8090 | an operating system which understood the difference between | |
8091 | initialization and the running of a program. */ | |
8092 | was_readonly = 1; | |
8093 | TREE_READONLY (decl) = 0; | |
8094 | } | |
8095 | ||
27778b73 | 8096 | if (TREE_CODE (decl) == FIELD_DECL && asmspec) |
8d08fdba | 8097 | { |
27778b73 MM |
8098 | /* This must override the asm specifier which was placed by |
8099 | grokclassfn. Lay this out fresh. */ | |
19e7881c | 8100 | SET_DECL_RTL (TREE_TYPE (decl), NULL_RTX); |
92643fea | 8101 | SET_DECL_ASSEMBLER_NAME (decl, get_identifier (asmspec)); |
6c418184 | 8102 | make_decl_rtl (decl, asmspec); |
8d08fdba MS |
8103 | } |
8104 | ||
c82dbd95 MM |
8105 | /* Deduce size of array from initialization, if not already known. */ |
8106 | maybe_deduce_size_from_array_init (decl, init); | |
8107 | init = check_initializer (decl, init); | |
3e41d13b | 8108 | |
8d08fdba MS |
8109 | GNU_xref_decl (current_function_decl, decl); |
8110 | ||
8d08fdba | 8111 | if (TREE_CODE (decl) == VAR_DECL) |
57b52417 | 8112 | layout_var_decl (decl); |
8d08fdba MS |
8113 | |
8114 | /* Output the assembler code and/or RTL code for variables and functions, | |
8115 | unless the type is an undefined structure or union. | |
8116 | If not, it will get done when the type is completed. */ | |
8d08fdba MS |
8117 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL |
8118 | || TREE_CODE (decl) == RESULT_DECL) | |
8119 | { | |
27778b73 MM |
8120 | if (TREE_CODE (decl) == VAR_DECL) |
8121 | maybe_commonize_var (decl); | |
8d08fdba | 8122 | |
27778b73 | 8123 | make_rtl_for_nonlocal_decl (decl, init, asmspec); |
8d08fdba | 8124 | |
68642fb6 | 8125 | if (TREE_CODE (type) == FUNCTION_TYPE |
27778b73 | 8126 | || TREE_CODE (type) == METHOD_TYPE) |
68642fb6 | 8127 | abstract_virtuals_error (decl, |
27778b73 | 8128 | strip_array_types (TREE_TYPE (type))); |
68642fb6 | 8129 | else |
27778b73 | 8130 | abstract_virtuals_error (decl, strip_array_types (type)); |
8d08fdba | 8131 | |
8d08fdba | 8132 | if (TREE_CODE (decl) == FUNCTION_DECL) |
faae18ab | 8133 | ; |
67d743fe MS |
8134 | else if (DECL_EXTERNAL (decl) |
8135 | && ! (DECL_LANG_SPECIFIC (decl) | |
8136 | && DECL_NOT_REALLY_EXTERN (decl))) | |
5566b478 MS |
8137 | { |
8138 | if (init) | |
8139 | DECL_INITIAL (decl) = init; | |
8140 | } | |
b35d4555 | 8141 | else if (TREE_CODE (CP_DECL_CONTEXT (decl)) == FUNCTION_DECL) |
8d08fdba | 8142 | { |
b7b8bcd2 | 8143 | /* This is a local declaration. */ |
b35d4555 MM |
8144 | if (doing_semantic_analysis_p ()) |
8145 | maybe_inject_for_scope_var (decl); | |
b7b8bcd2 MM |
8146 | /* Initialize the local variable. But, if we're building a |
8147 | statement-tree, we'll do the initialization when we | |
8148 | expand the tree. */ | |
24bef158 MM |
8149 | if (processing_template_decl) |
8150 | { | |
8151 | if (init || DECL_INITIAL (decl) == error_mark_node) | |
8152 | DECL_INITIAL (decl) = init; | |
8153 | } | |
8154 | else | |
8155 | { | |
b35d4555 MM |
8156 | /* If we're not building RTL, then we need to do so |
8157 | now. */ | |
44835fdd | 8158 | my_friendly_assert (building_stmt_tree (), 20000906); |
b35d4555 | 8159 | /* Initialize the variable. */ |
24bef158 MM |
8160 | initialize_local_var (decl, init, flags); |
8161 | /* Clean up the variable. */ | |
8162 | destroy_local_var (decl); | |
8163 | } | |
8d08fdba | 8164 | } |
9ed9e79a MM |
8165 | else if (TREE_STATIC (decl) && type != error_mark_node) |
8166 | { | |
8167 | /* Cleanups for static variables are handled by `finish_file'. */ | |
8168 | if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE | |
834c6dff | 8169 | || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) |
9ed9e79a MM |
8170 | expand_static_init (decl, init); |
8171 | } | |
8d08fdba MS |
8172 | finish_end0: |
8173 | ||
8174 | /* Undo call to `pushclass' that was done in `start_decl' | |
8175 | due to initialization of qualified member variable. | |
8176 | I.e., Foo::x = 10; */ | |
8177 | { | |
4f1c5b7d | 8178 | tree context = CP_DECL_CONTEXT (decl); |
8d08fdba | 8179 | if (context |
2f939d94 | 8180 | && TYPE_P (context) |
8d08fdba MS |
8181 | && (TREE_CODE (decl) == VAR_DECL |
8182 | /* We also have a pushclass done that we need to undo here | |
8183 | if we're at top level and declare a method. */ | |
5566b478 MS |
8184 | || TREE_CODE (decl) == FUNCTION_DECL) |
8185 | /* If size hasn't been set, we're still defining it, | |
8186 | and therefore inside the class body; don't pop | |
8187 | the binding level.. */ | |
d0f062fb | 8188 | && COMPLETE_TYPE_P (context) |
5566b478 | 8189 | && context == current_class_type) |
6b400b21 | 8190 | pop_nested_class (); |
8d08fdba MS |
8191 | } |
8192 | } | |
8193 | ||
8194 | finish_end: | |
8195 | ||
8d08fdba MS |
8196 | if (was_readonly) |
8197 | TREE_READONLY (decl) = 1; | |
8d08fdba MS |
8198 | } |
8199 | ||
82580166 | 8200 | /* This is here for a midend callback from c-common.c */ |
e92cc029 | 8201 | |
82580166 MS |
8202 | void |
8203 | finish_decl (decl, init, asmspec_tree) | |
8204 | tree decl, init; | |
8205 | tree asmspec_tree; | |
8206 | { | |
cd9f6678 | 8207 | cp_finish_decl (decl, init, asmspec_tree, 0); |
82580166 MS |
8208 | } |
8209 | ||
db4283a0 MM |
8210 | /* Returns a declaration for a VAR_DECL as if: |
8211 | ||
8212 | extern "C" TYPE NAME; | |
8213 | ||
8214 | had been seen. Used to create compiler-generated global | |
8215 | variables. */ | |
8216 | ||
8217 | tree | |
8218 | declare_global_var (name, type) | |
8219 | tree name; | |
8220 | tree type; | |
8221 | { | |
8222 | tree decl; | |
8223 | ||
8224 | push_to_top_level (); | |
8225 | decl = build_decl (VAR_DECL, name, type); | |
8226 | TREE_PUBLIC (decl) = 1; | |
8227 | DECL_EXTERNAL (decl) = 1; | |
8228 | DECL_ARTIFICIAL (decl) = 1; | |
8229 | pushdecl (decl); | |
8230 | cp_finish_decl (decl, NULL_TREE, NULL_TREE, 0); | |
8231 | pop_from_top_level (); | |
8232 | ||
8233 | return decl; | |
8234 | } | |
8235 | ||
8236 | /* Returns a pointer to the `atexit' function. Note that if | |
8237 | FLAG_USE_CXA_ATEXIT is non-zero, then this will actually be the new | |
8238 | `__cxa_atexit' function specified in the IA64 C++ ABI. */ | |
8239 | ||
8240 | static tree | |
8241 | get_atexit_node () | |
8242 | { | |
8243 | tree atexit_fndecl; | |
8244 | tree arg_types; | |
8245 | tree fn_type; | |
8246 | tree fn_ptr_type; | |
8247 | const char *name; | |
8248 | ||
8249 | if (atexit_node) | |
8250 | return atexit_node; | |
8251 | ||
8252 | if (flag_use_cxa_atexit) | |
8253 | { | |
8254 | /* The declaration for `__cxa_atexit' is: | |
8255 | ||
8256 | int __cxa_atexit (void (*)(void *), void *, void *) | |
8257 | ||
8258 | We build up the argument types and then then function type | |
8259 | itself. */ | |
68642fb6 | 8260 | |
db4283a0 MM |
8261 | /* First, build the pointer-to-function type for the first |
8262 | argument. */ | |
8263 | arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); | |
8264 | fn_type = build_function_type (void_type_node, arg_types); | |
8265 | fn_ptr_type = build_pointer_type (fn_type); | |
8266 | /* Then, build the rest of the argument types. */ | |
8267 | arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); | |
8268 | arg_types = tree_cons (NULL_TREE, ptr_type_node, arg_types); | |
8269 | arg_types = tree_cons (NULL_TREE, fn_ptr_type, arg_types); | |
8270 | /* And the final __cxa_atexit type. */ | |
8271 | fn_type = build_function_type (integer_type_node, arg_types); | |
8272 | fn_ptr_type = build_pointer_type (fn_type); | |
8273 | name = "__cxa_atexit"; | |
8274 | } | |
8275 | else | |
8276 | { | |
8277 | /* The declaration for `atexit' is: | |
68642fb6 | 8278 | |
db4283a0 MM |
8279 | int atexit (void (*)()); |
8280 | ||
8281 | We build up the argument types and then then function type | |
8282 | itself. */ | |
8283 | fn_type = build_function_type (void_type_node, void_list_node); | |
8284 | fn_ptr_type = build_pointer_type (fn_type); | |
8285 | arg_types = tree_cons (NULL_TREE, fn_ptr_type, void_list_node); | |
8286 | /* Build the final atexit type. */ | |
8287 | fn_type = build_function_type (integer_type_node, arg_types); | |
8288 | name = "atexit"; | |
8289 | } | |
8290 | ||
8291 | /* Now, build the function declaration. */ | |
8292 | push_lang_context (lang_name_c); | |
0c11ada6 | 8293 | atexit_fndecl = build_library_fn_ptr (name, fn_type); |
db4283a0 MM |
8294 | mark_used (atexit_fndecl); |
8295 | pop_lang_context (); | |
8296 | atexit_node = default_conversion (atexit_fndecl); | |
8297 | ||
8298 | return atexit_node; | |
8299 | } | |
8300 | ||
8301 | /* Returns the __dso_handle VAR_DECL. */ | |
8302 | ||
8303 | static tree | |
8304 | get_dso_handle_node () | |
8305 | { | |
8306 | if (dso_handle_node) | |
8307 | return dso_handle_node; | |
8308 | ||
8309 | /* Declare the variable. */ | |
8310 | dso_handle_node = declare_global_var (get_identifier ("__dso_handle"), | |
8311 | ptr_type_node); | |
8312 | ||
8313 | return dso_handle_node; | |
8314 | } | |
8315 | ||
8316 | /* Begin a new function with internal linkage whose job will be simply | |
8317 | to destroy some particular variable. */ | |
8318 | ||
8319 | static tree | |
8320 | start_cleanup_fn () | |
8321 | { | |
8322 | static int counter = 0; | |
8323 | int old_interface_unknown = interface_unknown; | |
8324 | char name[32]; | |
8325 | tree parmtypes; | |
8326 | tree fntype; | |
8327 | tree fndecl; | |
8328 | ||
8329 | push_to_top_level (); | |
8330 | ||
8331 | /* No need to mangle this. */ | |
8332 | push_lang_context (lang_name_c); | |
8333 | ||
8334 | interface_unknown = 1; | |
8335 | ||
8336 | /* Build the parameter-types. */ | |
8337 | parmtypes = void_list_node; | |
8338 | /* Functions passed to __cxa_atexit take an additional parameter. | |
8339 | We'll just ignore it. After we implement the new calling | |
8340 | convention for destructors, we can eliminate the use of | |
8341 | additional cleanup functions entirely in the -fnew-abi case. */ | |
8342 | if (flag_use_cxa_atexit) | |
8343 | parmtypes = tree_cons (NULL_TREE, ptr_type_node, parmtypes); | |
8344 | /* Build the function type itself. */ | |
8345 | fntype = build_function_type (void_type_node, parmtypes); | |
8346 | /* Build the name of the function. */ | |
8347 | sprintf (name, "__tcf_%d", counter++); | |
8348 | /* Build the function declaration. */ | |
8349 | fndecl = build_lang_decl (FUNCTION_DECL, get_identifier (name), fntype); | |
8350 | /* It's a function with internal linkage, generated by the | |
8351 | compiler. */ | |
8352 | TREE_PUBLIC (fndecl) = 0; | |
8353 | DECL_ARTIFICIAL (fndecl) = 1; | |
5a728aca MM |
8354 | /* Make the function `inline' so that it is only emitted if it is |
8355 | actually needed. It is unlikely that it will be inlined, since | |
8356 | it is only called via a function pointer, but we avoid unncessary | |
8357 | emissions this way. */ | |
8358 | DECL_INLINE (fndecl) = 1; | |
db4283a0 MM |
8359 | /* Build the parameter. */ |
8360 | if (flag_use_cxa_atexit) | |
8361 | { | |
8362 | tree parmdecl; | |
8363 | ||
8364 | parmdecl = build_decl (PARM_DECL, NULL_TREE, ptr_type_node); | |
8365 | DECL_CONTEXT (parmdecl) = fndecl; | |
8366 | DECL_ARG_TYPE (parmdecl) = ptr_type_node; | |
8367 | TREE_USED (parmdecl) = 1; | |
8368 | DECL_ARGUMENTS (fndecl) = parmdecl; | |
8369 | } | |
8370 | ||
09ed39ad | 8371 | pushdecl (fndecl); |
db4283a0 MM |
8372 | start_function (/*specs=*/NULL_TREE, fndecl, NULL_TREE, SF_PRE_PARSED); |
8373 | do_pushlevel (); | |
8374 | ||
8375 | interface_unknown = old_interface_unknown; | |
8376 | ||
8377 | pop_lang_context (); | |
8378 | ||
8379 | return current_function_decl; | |
8380 | } | |
8381 | ||
8382 | /* Finish the cleanup function begun by start_cleanup_fn. */ | |
8383 | ||
8384 | static void | |
8385 | end_cleanup_fn () | |
8386 | { | |
8387 | do_poplevel (); | |
8388 | ||
0acf7199 | 8389 | expand_body (finish_function (0)); |
db4283a0 MM |
8390 | |
8391 | pop_from_top_level (); | |
8392 | } | |
8393 | ||
bf419747 MM |
8394 | /* Generate code to handle the destruction of DECL, an object with |
8395 | static storage duration. */ | |
f0105ed3 | 8396 | |
bf419747 MM |
8397 | void |
8398 | register_dtor_fn (decl) | |
f0105ed3 MM |
8399 | tree decl; |
8400 | { | |
db4283a0 | 8401 | tree cleanup; |
f0105ed3 | 8402 | tree compound_stmt; |
db4283a0 MM |
8403 | tree args; |
8404 | tree fcall; | |
f0105ed3 | 8405 | |
db4283a0 | 8406 | int saved_flag_access_control; |
f0105ed3 | 8407 | |
834c6dff | 8408 | if (TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl))) |
bf419747 MM |
8409 | return; |
8410 | ||
f0105ed3 MM |
8411 | /* Call build_cleanup before we enter the anonymous function so that |
8412 | any access checks will be done relative to the current scope, | |
8413 | rather than the scope of the anonymous function. */ | |
8414 | build_cleanup (decl); | |
8415 | ||
8416 | /* Now start the function. */ | |
db4283a0 | 8417 | cleanup = start_cleanup_fn (); |
f0105ed3 MM |
8418 | |
8419 | /* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer | |
8420 | to the original function, rather than the anonymous one. That | |
8421 | will make the back-end think that nested functions are in use, | |
8422 | which causes confusion. */ | |
8423 | saved_flag_access_control = flag_access_control; | |
8424 | flag_access_control = 0; | |
8425 | fcall = build_cleanup (decl); | |
8426 | flag_access_control = saved_flag_access_control; | |
8427 | ||
8428 | /* Create the body of the anonymous function. */ | |
8429 | compound_stmt = begin_compound_stmt (/*has_no_scope=*/0); | |
8430 | finish_expr_stmt (fcall); | |
8431 | finish_compound_stmt (/*has_no_scope=*/0, compound_stmt); | |
db4283a0 | 8432 | end_cleanup_fn (); |
f0105ed3 MM |
8433 | |
8434 | /* Call atexit with the cleanup function. */ | |
8435 | mark_addressable (cleanup); | |
8436 | cleanup = build_unary_op (ADDR_EXPR, cleanup, 0); | |
db4283a0 MM |
8437 | if (flag_use_cxa_atexit) |
8438 | { | |
8439 | args = tree_cons (NULL_TREE, get_dso_handle_node (), NULL_TREE); | |
8440 | args = tree_cons (NULL_TREE, null_pointer_node, args); | |
8441 | args = tree_cons (NULL_TREE, cleanup, args); | |
8442 | } | |
8443 | else | |
8444 | args = tree_cons (NULL_TREE, cleanup, NULL_TREE); | |
8445 | finish_expr_stmt (build_function_call (get_atexit_node (), args)); | |
f0105ed3 MM |
8446 | } |
8447 | ||
8d08fdba MS |
8448 | void |
8449 | expand_static_init (decl, init) | |
8450 | tree decl; | |
8451 | tree init; | |
8452 | { | |
8453 | tree oldstatic = value_member (decl, static_aggregates); | |
a4443a08 | 8454 | |
8d08fdba MS |
8455 | if (oldstatic) |
8456 | { | |
8457 | if (TREE_PURPOSE (oldstatic) && init != NULL_TREE) | |
8251199e | 8458 | cp_error ("multiple initializations given for `%D'", decl); |
8d08fdba | 8459 | } |
0aafb128 | 8460 | else if (! toplevel_bindings_p ()) |
8d08fdba MS |
8461 | { |
8462 | /* Emit code to perform this initialization but once. */ | |
b7b8bcd2 | 8463 | tree if_stmt; |
f0105ed3 | 8464 | tree then_clause; |
f1dedc31 | 8465 | tree assignment; |
c395453c MM |
8466 | tree guard; |
8467 | tree guard_init; | |
8d08fdba | 8468 | |
2036a15c MM |
8469 | /* Emit code to perform this initialization but once. This code |
8470 | looks like: | |
8471 | ||
c395453c MM |
8472 | static int guard = 0; |
8473 | if (!guard) { | |
2036a15c | 8474 | // Do initialization. |
c395453c | 8475 | guard = 1; |
2036a15c MM |
8476 | // Register variable for destruction at end of program. |
8477 | } | |
8478 | ||
8479 | Note that the `temp' variable is only set to 1 *after* the | |
8480 | initialization is complete. This ensures that an exception, | |
8481 | thrown during the construction, will cause the variable to | |
8482 | reinitialized when we pass through this code again, as per: | |
68642fb6 | 8483 | |
2036a15c MM |
8484 | [stmt.dcl] |
8485 | ||
8486 | If the initialization exits by throwing an exception, the | |
8487 | initialization is not complete, so it will be tried again | |
8488 | the next time control enters the declaration. | |
8489 | ||
8490 | In theory, this process should be thread-safe, too; multiple | |
8491 | threads should not be able to initialize the variable more | |
8492 | than once. We don't yet attempt to ensure thread-safety. */ | |
c395453c MM |
8493 | |
8494 | /* Create the guard variable. */ | |
8495 | guard = get_guard (decl); | |
2036a15c MM |
8496 | |
8497 | /* Begin the conditional initialization. */ | |
b7b8bcd2 | 8498 | if_stmt = begin_if_stmt (); |
c395453c | 8499 | finish_if_stmt_cond (get_guard_cond (guard), if_stmt); |
f0105ed3 | 8500 | then_clause = begin_compound_stmt (/*has_no_scope=*/0); |
72b7eeff | 8501 | |
2036a15c | 8502 | /* Do the initialization itself. */ |
28cbf42c | 8503 | if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)) |
f30432d7 | 8504 | || (init && TREE_CODE (init) == TREE_LIST)) |
f1dedc31 | 8505 | assignment = build_aggr_init (decl, init, 0); |
f30432d7 | 8506 | else if (init) |
c557501d MM |
8507 | /* The initialization we're doing here is just a bitwise |
8508 | copy. */ | |
8509 | assignment = build (INIT_EXPR, TREE_TYPE (decl), decl, init); | |
f1dedc31 MM |
8510 | else |
8511 | assignment = NULL_TREE; | |
8512 | ||
8513 | /* Once the assignment is complete, set TEMP to 1. Since the | |
8514 | construction of the static object is complete at this point, | |
8515 | we want to make sure TEMP is set to 1 even if a temporary | |
8516 | constructed during the initialization throws an exception | |
8517 | when it is destroyed. So, we combine the initialization and | |
8518 | the assignment to TEMP into a single expression, ensuring | |
8519 | that when we call finish_expr_stmt the cleanups will not be | |
8520 | run until after TEMP is set to 1. */ | |
c395453c | 8521 | guard_init = set_guard (guard); |
f1dedc31 MM |
8522 | if (assignment) |
8523 | { | |
8524 | assignment = tree_cons (NULL_TREE, assignment, | |
68642fb6 | 8525 | build_tree_list (NULL_TREE, |
c395453c | 8526 | guard_init)); |
f1dedc31 MM |
8527 | assignment = build_compound_expr (assignment); |
8528 | } | |
8529 | else | |
c395453c | 8530 | assignment = guard_init; |
f1dedc31 | 8531 | finish_expr_stmt (assignment); |
72b7eeff | 8532 | |
2036a15c MM |
8533 | /* Use atexit to register a function for destroying this static |
8534 | variable. */ | |
bf419747 | 8535 | register_dtor_fn (decl); |
72b7eeff | 8536 | |
f0105ed3 | 8537 | finish_compound_stmt (/*has_no_scope=*/0, then_clause); |
b7b8bcd2 MM |
8538 | finish_then_clause (if_stmt); |
8539 | finish_if_stmt (); | |
8d08fdba MS |
8540 | } |
8541 | else | |
bbd15aac | 8542 | static_aggregates = tree_cons (init, decl, static_aggregates); |
8d08fdba | 8543 | } |
3c5c0849 MM |
8544 | |
8545 | /* Finish the declaration of a catch-parameter. */ | |
8546 | ||
b35d4555 | 8547 | tree |
3c5c0849 MM |
8548 | start_handler_parms (declspecs, declarator) |
8549 | tree declspecs; | |
8550 | tree declarator; | |
8551 | { | |
8552 | tree decl; | |
8553 | if (declspecs) | |
8554 | { | |
8555 | decl = grokdeclarator (declarator, declspecs, CATCHPARM, | |
8556 | 1, NULL_TREE); | |
8557 | if (decl == NULL_TREE) | |
8558 | error ("invalid catch parameter"); | |
8559 | } | |
8560 | else | |
8561 | decl = NULL_TREE; | |
b35d4555 MM |
8562 | |
8563 | return decl; | |
3c5c0849 MM |
8564 | } |
8565 | ||
8d08fdba MS |
8566 | \f |
8567 | /* Make TYPE a complete type based on INITIAL_VALUE. | |
8568 | Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered, | |
6ab5c740 | 8569 | 2 if there was no information (in which case assume 0 if DO_DEFAULT). */ |
8d08fdba MS |
8570 | |
8571 | int | |
8572 | complete_array_type (type, initial_value, do_default) | |
8573 | tree type, initial_value; | |
8574 | int do_default; | |
8575 | { | |
8576 | register tree maxindex = NULL_TREE; | |
8577 | int value = 0; | |
68642fb6 | 8578 | |
8d08fdba MS |
8579 | if (initial_value) |
8580 | { | |
7b019c19 MM |
8581 | /* An array of character type can be initialized from a |
8582 | brace-enclosed string constant. */ | |
8583 | if (char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type))) | |
8584 | && TREE_CODE (initial_value) == CONSTRUCTOR | |
8585 | && CONSTRUCTOR_ELTS (initial_value) | |
8586 | && (TREE_CODE (TREE_VALUE (CONSTRUCTOR_ELTS (initial_value))) | |
8587 | == STRING_CST) | |
8588 | && TREE_CHAIN (CONSTRUCTOR_ELTS (initial_value)) == NULL_TREE) | |
8589 | initial_value = TREE_VALUE (CONSTRUCTOR_ELTS (initial_value)); | |
8590 | ||
8591 | /* Note MAXINDEX is really the maximum index, one less than the | |
8592 | size. */ | |
8d08fdba | 8593 | if (TREE_CODE (initial_value) == STRING_CST) |
e1cd6e56 MS |
8594 | { |
8595 | int eltsize | |
8596 | = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value))); | |
8597 | maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value) | |
8598 | / eltsize) - 1, 0); | |
8599 | } | |
8d08fdba MS |
8600 | else if (TREE_CODE (initial_value) == CONSTRUCTOR) |
8601 | { | |
e1cd6e56 | 8602 | tree elts = CONSTRUCTOR_ELTS (initial_value); |
fed3cef0 RK |
8603 | |
8604 | maxindex = ssize_int (-1); | |
e1cd6e56 MS |
8605 | for (; elts; elts = TREE_CHAIN (elts)) |
8606 | { | |
8607 | if (TREE_PURPOSE (elts)) | |
8608 | maxindex = TREE_PURPOSE (elts); | |
8609 | else | |
fed3cef0 | 8610 | maxindex = size_binop (PLUS_EXPR, maxindex, ssize_int (1)); |
e1cd6e56 MS |
8611 | } |
8612 | maxindex = copy_node (maxindex); | |
8d08fdba MS |
8613 | } |
8614 | else | |
8615 | { | |
8616 | /* Make an error message unless that happened already. */ | |
8617 | if (initial_value != error_mark_node) | |
8618 | value = 1; | |
0db982be ML |
8619 | else |
8620 | initial_value = NULL_TREE; | |
8d08fdba MS |
8621 | |
8622 | /* Prevent further error messages. */ | |
8623 | maxindex = build_int_2 (0, 0); | |
8624 | } | |
8625 | } | |
8626 | ||
8627 | if (!maxindex) | |
8628 | { | |
8629 | if (do_default) | |
8630 | maxindex = build_int_2 (0, 0); | |
8631 | value = 2; | |
8632 | } | |
8633 | ||
8634 | if (maxindex) | |
8635 | { | |
51c184be | 8636 | tree itype; |
6ab5c740 NS |
8637 | tree domain; |
8638 | ||
8639 | domain = build_index_type (maxindex); | |
8640 | TYPE_DOMAIN (type) = domain; | |
51c184be | 8641 | |
dff6b454 | 8642 | if (! TREE_TYPE (maxindex)) |
6ab5c740 | 8643 | TREE_TYPE (maxindex) = domain; |
51c184be MS |
8644 | if (initial_value) |
8645 | itype = TREE_TYPE (initial_value); | |
8646 | else | |
8647 | itype = NULL; | |
8648 | if (itype && !TYPE_DOMAIN (itype)) | |
6ab5c740 | 8649 | TYPE_DOMAIN (itype) = domain; |
dff6b454 RK |
8650 | /* The type of the main variant should never be used for arrays |
8651 | of different sizes. It should only ever be completed with the | |
8652 | size of the array. */ | |
8653 | if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type))) | |
6ab5c740 | 8654 | TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = domain; |
8d08fdba MS |
8655 | } |
8656 | ||
8657 | /* Lay out the type now that we can get the real answer. */ | |
8658 | ||
8659 | layout_type (type); | |
8660 | ||
8661 | return value; | |
8662 | } | |
8663 | \f | |
8664 | /* Return zero if something is declared to be a member of type | |
8665 | CTYPE when in the context of CUR_TYPE. STRING is the error | |
8666 | message to print in that case. Otherwise, quietly return 1. */ | |
e92cc029 | 8667 | |
8d08fdba | 8668 | static int |
4dacf5bd | 8669 | member_function_or_else (ctype, cur_type, flags) |
8d08fdba | 8670 | tree ctype, cur_type; |
4dacf5bd | 8671 | enum overload_flags flags; |
8d08fdba MS |
8672 | { |
8673 | if (ctype && ctype != cur_type) | |
8674 | { | |
4dacf5bd | 8675 | if (flags == DTOR_FLAG) |
2ae7bada NS |
8676 | cp_error ("destructor for alien class `%T' cannot be a member", |
8677 | ctype); | |
4dacf5bd | 8678 | else |
2ae7bada NS |
8679 | cp_error ("constructor for alien class `%T' cannot be a member", |
8680 | ctype); | |
8d08fdba MS |
8681 | return 0; |
8682 | } | |
8683 | return 1; | |
8684 | } | |
8685 | \f | |
8686 | /* Subroutine of `grokdeclarator'. */ | |
8687 | ||
8688 | /* Generate errors possibly applicable for a given set of specifiers. | |
8689 | This is for ARM $7.1.2. */ | |
e92cc029 | 8690 | |
8d08fdba MS |
8691 | static void |
8692 | bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises) | |
8693 | tree object; | |
d8e178a0 | 8694 | const char *type; |
8d08fdba MS |
8695 | int virtualp, quals, friendp, raises, inlinep; |
8696 | { | |
8697 | if (virtualp) | |
8251199e | 8698 | cp_error ("`%D' declared as a `virtual' %s", object, type); |
8d08fdba | 8699 | if (inlinep) |
8251199e | 8700 | cp_error ("`%D' declared as an `inline' %s", object, type); |
8d08fdba | 8701 | if (quals) |
8251199e | 8702 | cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration", |
a28e3c7f | 8703 | object, type); |
8d08fdba | 8704 | if (friendp) |
f8e55f34 | 8705 | cp_error_at ("`%D' declared as a friend", object); |
a714e5c5 JM |
8706 | if (raises && !TYPE_PTRFN_P (TREE_TYPE (object)) |
8707 | && !TYPE_PTRMEMFUNC_P (TREE_TYPE (object))) | |
f8e55f34 | 8708 | cp_error_at ("`%D' declared with an exception specification", object); |
8d08fdba MS |
8709 | } |
8710 | ||
8711 | /* CTYPE is class type, or null if non-class. | |
8712 | TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE | |
8713 | or METHOD_TYPE. | |
8714 | DECLARATOR is the function's name. | |
8715 | VIRTUALP is truthvalue of whether the function is virtual or not. | |
8716 | FLAGS are to be passed through to `grokclassfn'. | |
8717 | QUALS are qualifiers indicating whether the function is `const' | |
8718 | or `volatile'. | |
8719 | RAISES is a list of exceptions that this function can raise. | |
8720 | CHECK is 1 if we must find this method in CTYPE, 0 if we should | |
68642fb6 | 8721 | not look, and -1 if we should not call `grokclassfn' at all. |
3ddfb0e6 | 8722 | |
20496fa2 | 8723 | Returns `NULL_TREE' if something goes wrong, after issuing |
3ddfb0e6 | 8724 | applicable error messages. */ |
e92cc029 | 8725 | |
8d08fdba | 8726 | static tree |
386b8a85 | 8727 | grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals, |
7a8f9fa9 | 8728 | raises, check, friendp, publicp, inlinep, funcdef_flag, |
2c73f9f5 | 8729 | template_count, in_namespace) |
8d08fdba MS |
8730 | tree ctype, type; |
8731 | tree declarator; | |
386b8a85 | 8732 | tree orig_declarator; |
8d08fdba MS |
8733 | int virtualp; |
8734 | enum overload_flags flags; | |
7a8f9fa9 | 8735 | tree quals, raises; |
386b8a85 | 8736 | int check, friendp, publicp, inlinep, funcdef_flag, template_count; |
2c73f9f5 | 8737 | tree in_namespace; |
8d08fdba | 8738 | { |
1951a1b6 | 8739 | tree decl; |
8d08fdba | 8740 | int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE; |
856216bb | 8741 | int has_default_arg = 0; |
42976354 | 8742 | tree t; |
8d08fdba | 8743 | |
8d08fdba MS |
8744 | if (raises) |
8745 | { | |
f30432d7 | 8746 | type = build_exception_variant (type, raises); |
8d08fdba | 8747 | } |
c11b6f21 | 8748 | |
8d08fdba | 8749 | decl = build_lang_decl (FUNCTION_DECL, declarator, type); |
2c73f9f5 | 8750 | /* Propagate volatile out from type to decl. */ |
8d08fdba | 8751 | if (TYPE_VOLATILE (type)) |
893de33c | 8752 | TREE_THIS_VOLATILE (decl) = 1; |
8d08fdba | 8753 | |
79c4d4b7 | 8754 | /* If this decl has namespace scope, set that up. */ |
2c73f9f5 | 8755 | if (in_namespace) |
b262d64c | 8756 | set_decl_namespace (decl, in_namespace, friendp); |
adae082f | 8757 | else if (!ctype) |
79c4d4b7 | 8758 | DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace); |
2c73f9f5 | 8759 | |
0f8766b8 JM |
8760 | /* `main' and builtins have implicit 'C' linkage. */ |
8761 | if ((MAIN_NAME_P (declarator) | |
8762 | || (IDENTIFIER_LENGTH (declarator) > 10 | |
8763 | && IDENTIFIER_POINTER (declarator)[0] == '_' | |
8764 | && IDENTIFIER_POINTER (declarator)[1] == '_' | |
8765 | && strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0)) | |
8766 | && current_lang_name == lang_name_cplusplus | |
94706a5c | 8767 | && ctype == NULL_TREE |
79c4d4b7 JM |
8768 | /* NULL_TREE means global namespace. */ |
8769 | && DECL_CONTEXT (decl) == NULL_TREE) | |
5d2ed28c | 8770 | SET_DECL_LANGUAGE (decl, lang_c); |
0f8766b8 | 8771 | |
8d08fdba MS |
8772 | /* Should probably propagate const out from type to decl I bet (mrs). */ |
8773 | if (staticp) | |
8774 | { | |
8775 | DECL_STATIC_FUNCTION_P (decl) = 1; | |
8776 | DECL_CONTEXT (decl) = ctype; | |
8d08fdba MS |
8777 | } |
8778 | ||
e76a2646 | 8779 | if (ctype) |
4f1c5b7d | 8780 | DECL_CONTEXT (decl) = ctype; |
e76a2646 | 8781 | |
0f8766b8 | 8782 | if (ctype == NULL_TREE && DECL_MAIN_P (decl)) |
faae18ab | 8783 | { |
848b92e1 | 8784 | if (processing_template_decl) |
cb9a3ff8 | 8785 | error ("cannot declare `::main' to be a template"); |
faae18ab | 8786 | if (inlinep) |
cb9a3ff8 | 8787 | error ("cannot declare `::main' to be inline"); |
f22967f3 | 8788 | if (!publicp) |
cb9a3ff8 | 8789 | error ("cannot declare `::main' to be static"); |
f22967f3 MM |
8790 | if (!same_type_p (TREE_TYPE (TREE_TYPE (decl)), |
8791 | integer_type_node)) | |
8792 | error ("`main' must return `int'"); | |
faae18ab MS |
8793 | inlinep = 0; |
8794 | publicp = 1; | |
8795 | } | |
50a6dbd7 | 8796 | |
59e76fc6 JM |
8797 | /* Members of anonymous types and local classes have no linkage; make |
8798 | them internal. */ | |
1951a1b6 JM |
8799 | /* FIXME what if it gets a name from typedef? */ |
8800 | if (ctype && (TYPE_ANONYMOUS_P (ctype) | |
4f1c5b7d | 8801 | || decl_function_context (TYPE_MAIN_DECL (ctype)))) |
50a6dbd7 JM |
8802 | publicp = 0; |
8803 | ||
8804 | if (publicp) | |
8805 | { | |
8806 | /* [basic.link]: A name with no linkage (notably, the name of a class | |
8807 | or enumeration declared in a local scope) shall not be used to | |
8808 | declare an entity with linkage. | |
8809 | ||
8810 | Only check this for public decls for now. */ | |
8811 | t = no_linkage_check (TREE_TYPE (decl)); | |
8812 | if (t) | |
8813 | { | |
1951a1b6 | 8814 | if (TYPE_ANONYMOUS_P (t)) |
7f7c930e | 8815 | { |
eb68cb58 | 8816 | if (DECL_EXTERN_C_P (decl)) |
7f7c930e JM |
8817 | /* Allow this; it's pretty common in C. */; |
8818 | else | |
1951a1b6 JM |
8819 | { |
8820 | cp_pedwarn ("non-local function `%#D' uses anonymous type", | |
8821 | decl); | |
8822 | if (DECL_ORIGINAL_TYPE (TYPE_NAME (t))) | |
8823 | cp_pedwarn_at ("\ | |
8824 | `%#D' does not refer to the unqualified type, so it is not used for linkage", | |
8825 | TYPE_NAME (t)); | |
8826 | } | |
7f7c930e | 8827 | } |
50a6dbd7 | 8828 | else |
8251199e | 8829 | cp_pedwarn ("non-local function `%#D' uses local type `%T'", |
cce2be43 | 8830 | decl, t); |
50a6dbd7 JM |
8831 | } |
8832 | } | |
8833 | ||
893de33c | 8834 | TREE_PUBLIC (decl) = publicp; |
faae18ab | 8835 | if (! publicp) |
893de33c JM |
8836 | { |
8837 | DECL_INTERFACE_KNOWN (decl) = 1; | |
8838 | DECL_NOT_REALLY_EXTERN (decl) = 1; | |
8839 | } | |
faae18ab MS |
8840 | |
8841 | if (inlinep) | |
79065db2 | 8842 | DECL_DECLARED_INLINE_P (decl) = DECL_INLINE (decl) = 1; |
8d08fdba MS |
8843 | |
8844 | DECL_EXTERNAL (decl) = 1; | |
8845 | if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE) | |
8846 | { | |
8251199e | 8847 | cp_error ("%smember function `%D' cannot have `%T' method qualifier", |
8d08fdba MS |
8848 | (ctype ? "static " : "non-"), decl, TREE_VALUE (quals)); |
8849 | quals = NULL_TREE; | |
8850 | } | |
8851 | ||
596ea4e5 | 8852 | if (IDENTIFIER_OPNAME_P (DECL_NAME (decl))) |
8d08fdba MS |
8853 | grok_op_properties (decl, virtualp, check < 0); |
8854 | ||
4f1c5b7d | 8855 | if (ctype && decl_function_context (decl)) |
893de33c | 8856 | DECL_NO_STATIC_CHAIN (decl) = 1; |
e76a2646 | 8857 | |
42976354 BK |
8858 | for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t)) |
8859 | if (TREE_PURPOSE (t) | |
8860 | && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG) | |
8861 | { | |
856216bb | 8862 | has_default_arg = 1; |
42976354 BK |
8863 | break; |
8864 | } | |
8865 | ||
f9d94ea4 JM |
8866 | if (friendp |
8867 | && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR) | |
8868 | { | |
8869 | if (funcdef_flag) | |
8251199e JM |
8870 | cp_error |
8871 | ("defining explicit specialization `%D' in friend declaration", | |
f9d94ea4 JM |
8872 | orig_declarator); |
8873 | else | |
8874 | { | |
76e57b45 NS |
8875 | tree fns = TREE_OPERAND (orig_declarator, 0); |
8876 | tree args = TREE_OPERAND (orig_declarator, 1); | |
d363e7bf | 8877 | |
7e2421f7 MM |
8878 | if (PROCESSING_REAL_TEMPLATE_DECL_P ()) |
8879 | { | |
8880 | /* Something like `template <class T> friend void f<T>()'. */ | |
cb9a3ff8 | 8881 | cp_error ("invalid use of template-id `%D' in declaration of primary template", |
7e2421f7 | 8882 | orig_declarator); |
20496fa2 | 8883 | return NULL_TREE; |
7e2421f7 MM |
8884 | } |
8885 | ||
856216bb | 8886 | |
f9d94ea4 JM |
8887 | /* A friend declaration of the form friend void f<>(). Record |
8888 | the information in the TEMPLATE_ID_EXPR. */ | |
8889 | SET_DECL_IMPLICIT_INSTANTIATION (decl); | |
76e57b45 NS |
8890 | |
8891 | if (TREE_CODE (fns) == COMPONENT_REF) | |
8892 | { | |
8893 | /* Due to bison parser ickiness, we will have already looked | |
8894 | up an operator_name or PFUNCNAME within the current class | |
8895 | (see template_id in parse.y). If the current class contains | |
8896 | such a name, we'll get a COMPONENT_REF here. Undo that. */ | |
d363e7bf | 8897 | |
76e57b45 NS |
8898 | my_friendly_assert (TREE_TYPE (TREE_OPERAND (fns, 0)) |
8899 | == current_class_type, 20001120); | |
8900 | fns = TREE_OPERAND (fns, 1); | |
8901 | } | |
8902 | my_friendly_assert (TREE_CODE (fns) == IDENTIFIER_NODE | |
8903 | || TREE_CODE (fns) == LOOKUP_EXPR | |
8904 | || TREE_CODE (fns) == OVERLOAD, 20001120); | |
8905 | DECL_TEMPLATE_INFO (decl) = tree_cons (fns, args, NULL_TREE); | |
856216bb MM |
8906 | |
8907 | if (has_default_arg) | |
8908 | { | |
8909 | cp_error ("default arguments are not allowed in declaration of friend template specialization `%D'", | |
8910 | decl); | |
8911 | return NULL_TREE; | |
8912 | } | |
8913 | ||
8914 | if (inlinep) | |
8915 | { | |
68642fb6 | 8916 | cp_error ("`inline' is not allowed in declaration of friend template specialization `%D'", |
856216bb MM |
8917 | decl); |
8918 | return NULL_TREE; | |
8919 | } | |
f9d94ea4 | 8920 | } |
f84b4be9 | 8921 | } |
386b8a85 | 8922 | |
856216bb MM |
8923 | if (has_default_arg) |
8924 | add_defarg_fn (decl); | |
8925 | ||
1eb0072d JM |
8926 | if (funcdef_flag) |
8927 | /* Make the init_value nonzero so pushdecl knows this is not | |
8928 | tentative. error_mark_node is replaced later with the BLOCK. */ | |
8929 | DECL_INITIAL (decl) = error_mark_node; | |
8930 | ||
93ca4ba7 | 8931 | if (TYPE_NOTHROW_P (type) || nothrow_libfn_p (decl)) |
1660cb3a JM |
8932 | TREE_NOTHROW (decl) = 1; |
8933 | ||
75650646 | 8934 | /* Caller will do the rest of this. */ |
8d08fdba MS |
8935 | if (check < 0) |
8936 | return decl; | |
8937 | ||
1951a1b6 | 8938 | if (flags == NO_SPECIAL && ctype && constructor_name (ctype) == declarator) |
74b846e0 MM |
8939 | DECL_CONSTRUCTOR_P (decl) = 1; |
8940 | ||
8941 | /* Function gets the ugly name, field gets the nice one. This call | |
8942 | may change the type of the function (because of default | |
8943 | parameters)! */ | |
8944 | if (ctype != NULL_TREE) | |
8945 | grokclassfn (ctype, decl, flags, quals); | |
8946 | ||
8947 | decl = check_explicit_specialization (orig_declarator, decl, | |
8948 | template_count, | |
8949 | 2 * (funcdef_flag != 0) + | |
8950 | 4 * (friendp != 0)); | |
8951 | if (decl == error_mark_node) | |
8952 | return NULL_TREE; | |
98c1c668 | 8953 | |
74b846e0 MM |
8954 | if (ctype != NULL_TREE |
8955 | && (! TYPE_FOR_JAVA (ctype) || check_java_method (decl)) | |
8956 | && check) | |
8d08fdba | 8957 | { |
74b846e0 | 8958 | tree old_decl; |
8d08fdba | 8959 | |
74b846e0 | 8960 | old_decl = check_classfn (ctype, decl); |
8d08fdba | 8961 | |
74b846e0 MM |
8962 | if (old_decl && TREE_CODE (old_decl) == TEMPLATE_DECL) |
8963 | /* Because grokfndecl is always supposed to return a | |
8964 | FUNCTION_DECL, we pull out the DECL_TEMPLATE_RESULT | |
8965 | here. We depend on our callers to figure out that its | |
8966 | really a template that's being returned. */ | |
8967 | old_decl = DECL_TEMPLATE_RESULT (old_decl); | |
6c30752f | 8968 | |
74b846e0 MM |
8969 | if (old_decl && DECL_STATIC_FUNCTION_P (old_decl) |
8970 | && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE) | |
5566b478 | 8971 | { |
74b846e0 MM |
8972 | /* Remove the `this' parm added by grokclassfn. |
8973 | XXX Isn't this done in start_function, too? */ | |
3afb32a4 | 8974 | revert_static_member_fn (decl); |
74b846e0 | 8975 | last_function_parms = TREE_CHAIN (last_function_parms); |
5566b478 | 8976 | } |
74b846e0 MM |
8977 | if (old_decl && DECL_ARTIFICIAL (old_decl)) |
8978 | cp_error ("definition of implicitly-declared `%D'", old_decl); | |
8d08fdba | 8979 | |
74b846e0 | 8980 | if (old_decl) |
8d08fdba | 8981 | { |
74b846e0 MM |
8982 | /* Since we've smashed OLD_DECL to its |
8983 | DECL_TEMPLATE_RESULT, we must do the same to DECL. */ | |
8984 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
8985 | decl = DECL_TEMPLATE_RESULT (decl); | |
8986 | ||
8987 | /* Attempt to merge the declarations. This can fail, in | |
8988 | the case of some illegal specialization declarations. */ | |
8989 | if (!duplicate_decls (decl, old_decl)) | |
8990 | cp_error ("no `%#D' member function declared in class `%T'", | |
8991 | decl, ctype); | |
8992 | return old_decl; | |
8d08fdba MS |
8993 | } |
8994 | } | |
74b846e0 MM |
8995 | |
8996 | if (DECL_CONSTRUCTOR_P (decl) && !grok_ctor_properties (ctype, decl)) | |
8997 | return NULL_TREE; | |
8998 | ||
8999 | if (ctype == NULL_TREE || check) | |
9000 | return decl; | |
9001 | ||
9002 | if (virtualp) | |
cbb40945 | 9003 | DECL_VIRTUAL_P (decl) = 1; |
74b846e0 | 9004 | |
8d08fdba MS |
9005 | return decl; |
9006 | } | |
9007 | ||
9008 | static tree | |
2c73f9f5 | 9009 | grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace) |
8d08fdba MS |
9010 | tree type; |
9011 | tree declarator; | |
d2e5ee5c | 9012 | RID_BIT_TYPE *specbits_in; |
8d08fdba | 9013 | int initialized; |
a9aedbc2 | 9014 | int constp; |
2c73f9f5 | 9015 | tree in_namespace; |
8d08fdba MS |
9016 | { |
9017 | tree decl; | |
f7da6097 MS |
9018 | RID_BIT_TYPE specbits; |
9019 | ||
9020 | specbits = *specbits_in; | |
8d08fdba MS |
9021 | |
9022 | if (TREE_CODE (type) == OFFSET_TYPE) | |
9023 | { | |
9024 | /* If you declare a static member so that it | |
9025 | can be initialized, the code will reach here. */ | |
5b605f68 MS |
9026 | tree basetype = TYPE_OFFSET_BASETYPE (type); |
9027 | type = TREE_TYPE (type); | |
4ce3d537 | 9028 | decl = build_lang_decl (VAR_DECL, declarator, type); |
5b605f68 | 9029 | DECL_CONTEXT (decl) = basetype; |
8d08fdba MS |
9030 | } |
9031 | else | |
30394414 | 9032 | { |
79c4d4b7 JM |
9033 | tree context; |
9034 | ||
9035 | if (in_namespace) | |
9036 | context = in_namespace; | |
9037 | else if (namespace_bindings_p () || RIDBIT_SETP (RID_EXTERN, specbits)) | |
9038 | context = current_namespace; | |
820fcad8 JM |
9039 | else |
9040 | context = NULL_TREE; | |
79c4d4b7 | 9041 | |
5d2ed28c MM |
9042 | /* For namespace-scope variables, declared in a template, we |
9043 | need the full lang_decl. The same is true for | |
9044 | namespace-scope variables that do not have C++ language | |
9045 | linkage. */ | |
9046 | if (context | |
9047 | && (processing_template_decl | |
9048 | || current_lang_name != lang_name_cplusplus)) | |
cd9f6678 | 9049 | decl = build_lang_decl (VAR_DECL, declarator, type); |
9188c363 | 9050 | else |
c82dbd95 | 9051 | decl = build_decl (VAR_DECL, declarator, type); |
79c4d4b7 JM |
9052 | |
9053 | if (context) | |
b262d64c | 9054 | set_decl_namespace (decl, context, 0); |
79c4d4b7 JM |
9055 | |
9056 | context = DECL_CONTEXT (decl); | |
5362b086 | 9057 | if (declarator && context && current_lang_name != lang_name_c) |
92643fea MM |
9058 | /* We can't mangle lazily here because we don't have any |
9059 | way to recover whether or not a variable was `extern | |
9060 | "C"' later. */ | |
9061 | mangle_decl (decl); | |
30394414 | 9062 | } |
6060a796 | 9063 | |
2c73f9f5 | 9064 | if (in_namespace) |
b262d64c | 9065 | set_decl_namespace (decl, in_namespace, 0); |
2c73f9f5 | 9066 | |
8d08fdba MS |
9067 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
9068 | { | |
9069 | DECL_THIS_EXTERN (decl) = 1; | |
9070 | DECL_EXTERNAL (decl) = !initialized; | |
9071 | } | |
9072 | ||
9073 | /* In class context, static means one per class, | |
9074 | public access, and static storage. */ | |
2b9dc906 | 9075 | if (DECL_CLASS_SCOPE_P (decl)) |
8d08fdba MS |
9076 | { |
9077 | TREE_PUBLIC (decl) = 1; | |
9078 | TREE_STATIC (decl) = 1; | |
5b605f68 | 9079 | DECL_EXTERNAL (decl) = 0; |
8d08fdba MS |
9080 | } |
9081 | /* At top level, either `static' or no s.c. makes a definition | |
9082 | (perhaps tentative), and absence of `static' makes it public. */ | |
a9aedbc2 | 9083 | else if (toplevel_bindings_p ()) |
8d08fdba | 9084 | { |
a9aedbc2 | 9085 | TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits) |
9fffd093 | 9086 | && (DECL_THIS_EXTERN (decl) || ! constp)); |
8d08fdba MS |
9087 | TREE_STATIC (decl) = ! DECL_EXTERNAL (decl); |
9088 | } | |
9089 | /* Not at top level, only `static' makes a static definition. */ | |
9090 | else | |
9091 | { | |
9092 | TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits); | |
9093 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl); | |
9094 | } | |
50a6dbd7 JM |
9095 | |
9096 | if (TREE_PUBLIC (decl)) | |
9097 | { | |
9098 | /* [basic.link]: A name with no linkage (notably, the name of a class | |
9099 | or enumeration declared in a local scope) shall not be used to | |
9100 | declare an entity with linkage. | |
9101 | ||
9102 | Only check this for public decls for now. */ | |
9103 | tree t = no_linkage_check (TREE_TYPE (decl)); | |
9104 | if (t) | |
9105 | { | |
1951a1b6 | 9106 | if (TYPE_ANONYMOUS_P (t)) |
50a6dbd7 JM |
9107 | /* Ignore for now; `enum { foo } e' is pretty common. */; |
9108 | else | |
8251199e | 9109 | cp_pedwarn ("non-local variable `%#D' uses local type `%T'", |
50a6dbd7 JM |
9110 | decl, t); |
9111 | } | |
9112 | } | |
9113 | ||
8d08fdba MS |
9114 | return decl; |
9115 | } | |
9116 | ||
d8f8dca1 MM |
9117 | /* Create and return a canonical pointer to member function type, for |
9118 | TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */ | |
8d08fdba MS |
9119 | |
9120 | tree | |
9121 | build_ptrmemfunc_type (type) | |
9122 | tree type; | |
9123 | { | |
9124 | tree fields[4]; | |
9125 | tree t; | |
46cbda4a | 9126 | tree unqualified_variant = NULL_TREE; |
8d08fdba | 9127 | |
d48ebde1 NS |
9128 | if (type == error_mark_node) |
9129 | return type; | |
d363e7bf | 9130 | |
8d08fdba MS |
9131 | /* If a canonical type already exists for this type, use it. We use |
9132 | this method instead of type_hash_canon, because it only does a | |
9133 | simple equality check on the list of field members. */ | |
9134 | ||
9135 | if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type))) | |
9136 | return t; | |
9137 | ||
46cbda4a MM |
9138 | /* Make sure that we always have the unqualified pointer-to-member |
9139 | type first. */ | |
9140 | if (CP_TYPE_QUALS (type) != TYPE_UNQUALIFIED) | |
68642fb6 | 9141 | unqualified_variant |
46cbda4a MM |
9142 | = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type)); |
9143 | ||
33848bb0 | 9144 | t = make_aggr_type (RECORD_TYPE); |
2c73f9f5 | 9145 | /* Let the front-end know this is a pointer to member function... */ |
db5ae43f | 9146 | TYPE_PTRMEMFUNC_FLAG (t) = 1; |
2c73f9f5 | 9147 | /* ... and not really an aggregate. */ |
7ddedda4 | 9148 | SET_IS_AGGR_TYPE (t, 0); |
8d08fdba | 9149 | |
1f84ec23 MM |
9150 | fields[0] = build_decl (FIELD_DECL, pfn_identifier, type); |
9151 | fields[1] = build_decl (FIELD_DECL, delta_identifier, | |
9152 | delta_type_node); | |
9153 | finish_builtin_type (t, "__ptrmemfunc_type", fields, 1, ptr_type_node); | |
8d08fdba | 9154 | |
8d08fdba MS |
9155 | /* Zap out the name so that the back-end will give us the debugging |
9156 | information for this anonymous RECORD_TYPE. */ | |
9157 | TYPE_NAME (t) = NULL_TREE; | |
9158 | ||
46cbda4a MM |
9159 | /* If this is not the unqualified form of this pointer-to-member |
9160 | type, set the TYPE_MAIN_VARIANT for this type to be the | |
9161 | unqualified type. Since they are actually RECORD_TYPEs that are | |
9162 | not variants of each other, we must do this manually. */ | |
9163 | if (CP_TYPE_QUALS (type) != TYPE_UNQUALIFIED) | |
9164 | { | |
9165 | t = build_qualified_type (t, CP_TYPE_QUALS (type)); | |
9166 | TYPE_MAIN_VARIANT (t) = unqualified_variant; | |
9167 | TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (unqualified_variant); | |
9168 | TYPE_NEXT_VARIANT (unqualified_variant) = t; | |
9169 | } | |
9170 | ||
9171 | /* Cache this pointer-to-member type so that we can find it again | |
9172 | later. */ | |
8d08fdba MS |
9173 | TYPE_SET_PTRMEMFUNC_TYPE (type, t); |
9174 | ||
e92cc029 | 9175 | /* Seems to be wanted. */ |
8d08fdba | 9176 | CLASSTYPE_GOT_SEMICOLON (t) = 1; |
46cbda4a | 9177 | |
8d08fdba MS |
9178 | return t; |
9179 | } | |
9180 | ||
b17e2870 JM |
9181 | /* DECL is a VAR_DECL defined in-class, whose TYPE is also given. |
9182 | Check to see that the definition is valid. Issue appropriate error | |
9183 | messages. Return 1 if the definition is particularly bad, or 0 | |
9184 | otherwise. */ | |
9185 | ||
9186 | int | |
9187 | check_static_variable_definition (decl, type) | |
9188 | tree decl; | |
9189 | tree type; | |
9190 | { | |
9191 | /* Motion 10 at San Diego: If a static const integral data member is | |
9192 | initialized with an integral constant expression, the initializer | |
9193 | may appear either in the declaration (within the class), or in | |
9194 | the definition, but not both. If it appears in the class, the | |
9195 | member is a member constant. The file-scope definition is always | |
9196 | required. */ | |
9197 | if (CLASS_TYPE_P (type) || TREE_CODE (type) == REFERENCE_TYPE) | |
9198 | { | |
cb9a3ff8 | 9199 | cp_error ("invalid in-class initialization of static data member of non-integral type `%T'", |
b17e2870 JM |
9200 | type); |
9201 | /* If we just return the declaration, crashes will sometimes | |
9202 | occur. We therefore return void_type_node, as if this was a | |
9203 | friend declaration, to cause callers to completely ignore | |
9204 | this declaration. */ | |
9205 | return 1; | |
9206 | } | |
9207 | else if (!CP_TYPE_CONST_P (type)) | |
cb9a3ff8 | 9208 | cp_error ("ISO C++ forbids in-class initialization of non-const static member `%D'", |
b17e2870 JM |
9209 | decl); |
9210 | else if (pedantic && !INTEGRAL_TYPE_P (type)) | |
cb9a3ff8 | 9211 | cp_pedwarn ("ISO C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl, type); |
b17e2870 JM |
9212 | |
9213 | return 0; | |
9214 | } | |
9215 | ||
2848ad0f MM |
9216 | /* Given the SIZE (i.e., number of elements) in an array, compute an |
9217 | appropriate index type for the array. If non-NULL, NAME is the | |
9218 | name of the thing being declared. */ | |
9219 | ||
c95cd22e | 9220 | tree |
2848ad0f MM |
9221 | compute_array_index_type (name, size) |
9222 | tree name; | |
9223 | tree size; | |
9224 | { | |
9225 | tree itype; | |
9226 | ||
9227 | /* The size might be the result of a cast. */ | |
9228 | STRIP_TYPE_NOPS (size); | |
9229 | ||
9230 | /* It might be a const variable or enumeration constant. */ | |
fc611ce0 | 9231 | size = decl_constant_value (size); |
2848ad0f MM |
9232 | |
9233 | /* If this involves a template parameter, it will be a constant at | |
9234 | instantiation time, but we don't know what the value is yet. | |
9235 | Even if no template parameters are involved, we may an expression | |
9236 | that is not a constant; we don't even simplify `1 + 2' when | |
9237 | processing a template. */ | |
9238 | if (processing_template_decl) | |
9239 | { | |
9240 | /* Resolve a qualified reference to an enumerator or static | |
9241 | const data member of ours. */ | |
9242 | if (TREE_CODE (size) == SCOPE_REF | |
9243 | && TREE_OPERAND (size, 0) == current_class_type) | |
9244 | { | |
9245 | tree t = lookup_field (current_class_type, | |
9246 | TREE_OPERAND (size, 1), 0, 0); | |
9247 | if (t) | |
9248 | size = t; | |
9249 | } | |
9250 | ||
9251 | return build_index_type (build_min (MINUS_EXPR, sizetype, | |
9252 | size, integer_one_node)); | |
9253 | } | |
9254 | ||
9255 | /* The array bound must be an integer type. */ | |
9256 | if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE | |
9257 | && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE | |
9258 | && TREE_CODE (TREE_TYPE (size)) != BOOLEAN_TYPE) | |
9259 | { | |
d67cdbc3 JM |
9260 | if (name) |
9261 | cp_error ("size of array `%D' has non-integer type", name); | |
9262 | else | |
9263 | cp_error ("size of array has non-integer type"); | |
2848ad0f MM |
9264 | size = integer_one_node; |
9265 | } | |
9266 | ||
9267 | /* Normally, the array-bound will be a constant. */ | |
2bb5d995 | 9268 | if (TREE_CODE (size) == INTEGER_CST) |
2848ad0f MM |
9269 | { |
9270 | /* Check to see if the array bound overflowed. Make that an | |
9271 | error, no matter how generous we're being. */ | |
9272 | int old_flag_pedantic_errors = flag_pedantic_errors; | |
9273 | int old_pedantic = pedantic; | |
9274 | pedantic = flag_pedantic_errors = 1; | |
9275 | constant_expression_warning (size); | |
9276 | pedantic = old_pedantic; | |
9277 | flag_pedantic_errors = old_flag_pedantic_errors; | |
9278 | ||
9279 | /* An array must have a positive number of elements. */ | |
9280 | if (INT_CST_LT (size, integer_zero_node)) | |
9281 | { | |
d67cdbc3 JM |
9282 | if (name) |
9283 | cp_error ("size of array `%D' is negative", name); | |
9284 | else | |
9285 | cp_error ("size of array is negative"); | |
2848ad0f MM |
9286 | size = integer_one_node; |
9287 | } | |
9288 | /* Except that an extension we allow zero-sized arrays. We | |
68642fb6 | 9289 | always allow them in system headers because glibc uses |
2848ad0f MM |
9290 | them. */ |
9291 | else if (integer_zerop (size) && pedantic && !in_system_header) | |
d67cdbc3 JM |
9292 | { |
9293 | if (name) | |
cb9a3ff8 | 9294 | cp_pedwarn ("ISO C++ forbids zero-size array `%D'", name); |
d67cdbc3 | 9295 | else |
cb9a3ff8 | 9296 | cp_pedwarn ("ISO C++ forbids zero-size array"); |
d67cdbc3 | 9297 | } |
2848ad0f | 9298 | } |
2bb5d995 JM |
9299 | else if (TREE_CONSTANT (size)) |
9300 | { | |
9301 | /* `(int) &fn' is not a valid array bound. */ | |
9302 | if (name) | |
9303 | cp_error ("size of array `%D' is not an integral constant-expression", | |
9304 | name); | |
9305 | else | |
9306 | cp_error ("size of array is not an integral constant-expression"); | |
9307 | } | |
2848ad0f MM |
9308 | |
9309 | /* Compute the index of the largest element in the array. It is | |
9310 | one less than the number of elements in the array. */ | |
9311 | itype | |
ab76ca54 MM |
9312 | = fold (cp_build_binary_op (MINUS_EXPR, |
9313 | cp_convert (ssizetype, size), | |
9314 | cp_convert (ssizetype, | |
9315 | integer_one_node))); | |
68642fb6 | 9316 | |
2848ad0f MM |
9317 | /* Check for variable-sized arrays. We allow such things as an |
9318 | extension, even though they are not allowed in ANSI/ISO C++. */ | |
9319 | if (!TREE_CONSTANT (itype)) | |
9320 | { | |
9321 | if (pedantic) | |
9322 | { | |
9323 | if (name) | |
cb9a3ff8 | 9324 | cp_pedwarn ("ISO C++ forbids variable-size array `%D'", |
2848ad0f MM |
9325 | name); |
9326 | else | |
cb9a3ff8 | 9327 | cp_pedwarn ("ISO C++ forbids variable-size array"); |
2848ad0f MM |
9328 | } |
9329 | ||
9330 | /* Create a variable-sized array index type. */ | |
9331 | itype = variable_size (itype); | |
9332 | } | |
9333 | /* Make sure that there was no overflow when creating to a signed | |
9334 | index type. (For example, on a 32-bit machine, an array with | |
9335 | size 2^32 - 1 is too big.) */ | |
9336 | else if (TREE_OVERFLOW (itype)) | |
9337 | { | |
9338 | error ("overflow in array dimension"); | |
9339 | TREE_OVERFLOW (itype) = 0; | |
9340 | } | |
68642fb6 | 9341 | |
2848ad0f MM |
9342 | /* Create and return the appropriate index type. */ |
9343 | return build_index_type (itype); | |
9344 | } | |
9345 | ||
9346 | /* Returns an ARRAY_TYPE for an array with SIZE elements of the | |
9347 | indicated TYPE. If non-NULL, NAME is the NAME of the declaration | |
9348 | with this type. */ | |
9349 | ||
9350 | static tree | |
9351 | create_array_type_for_decl (name, type, size) | |
9352 | tree name; | |
9353 | tree type; | |
9354 | tree size; | |
9355 | { | |
9356 | tree itype = NULL_TREE; | |
9357 | const char* error_msg; | |
9358 | ||
9359 | /* If things have already gone awry, bail now. */ | |
9360 | if (type == error_mark_node || size == error_mark_node) | |
9361 | return error_mark_node; | |
9362 | ||
9363 | /* Assume that everything will go OK. */ | |
9364 | error_msg = NULL; | |
9365 | ||
9366 | /* There are some types which cannot be array elements. */ | |
9367 | switch (TREE_CODE (type)) | |
9368 | { | |
9369 | case VOID_TYPE: | |
9370 | error_msg = "array of void"; | |
9371 | break; | |
9372 | ||
9373 | case FUNCTION_TYPE: | |
9374 | error_msg = "array of functions"; | |
9375 | break; | |
9376 | ||
9377 | case REFERENCE_TYPE: | |
9378 | error_msg = "array of references"; | |
9379 | break; | |
9380 | ||
9381 | case OFFSET_TYPE: | |
9382 | error_msg = "array of data members"; | |
9383 | break; | |
9384 | ||
9385 | case METHOD_TYPE: | |
9386 | error_msg = "array of function members"; | |
9387 | break; | |
9388 | ||
9389 | default: | |
9390 | break; | |
9391 | } | |
9392 | ||
9393 | /* If something went wrong, issue an error-message and return. */ | |
9394 | if (error_msg) | |
9395 | { | |
9396 | if (name) | |
9397 | cp_error ("declaration of `%D' as %s", name, error_msg); | |
9398 | else | |
9399 | cp_error ("creating %s", error_msg); | |
9400 | ||
9401 | return error_mark_node; | |
9402 | } | |
9403 | ||
9404 | /* [dcl.array] | |
68642fb6 | 9405 | |
2848ad0f MM |
9406 | The constant expressions that specify the bounds of the arrays |
9407 | can be omitted only for the first member of the sequence. */ | |
9408 | if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)) | |
9409 | { | |
cb9a3ff8 | 9410 | cp_error ("declaration of `%D' as multidimensional array must have bounds for all dimensions except the first", |
2848ad0f | 9411 | name); |
2848ad0f MM |
9412 | |
9413 | return error_mark_node; | |
9414 | } | |
9415 | ||
9416 | /* Figure out the index type for the array. */ | |
9417 | if (size) | |
9418 | itype = compute_array_index_type (name, size); | |
9419 | ||
9420 | return build_cplus_array_type (type, itype); | |
9421 | } | |
9422 | ||
3dbc07b6 MM |
9423 | /* Check that it's OK to declare a function with the indicated TYPE. |
9424 | SFK indicates the kind of special function (if any) that this | |
1f84ec23 | 9425 | function is. OPTYPE is the type given in a conversion operator |
3dbc07b6 MM |
9426 | declaration. Returns the actual return type of the function; that |
9427 | may be different than TYPE if an error occurs, or for certain | |
9428 | special functions. */ | |
9429 | ||
9430 | static tree | |
1f84ec23 | 9431 | check_special_function_return_type (sfk, type, optype) |
3dbc07b6 MM |
9432 | special_function_kind sfk; |
9433 | tree type; | |
3dbc07b6 MM |
9434 | tree optype; |
9435 | { | |
9436 | switch (sfk) | |
9437 | { | |
9438 | case sfk_constructor: | |
9439 | if (type) | |
9440 | cp_error ("return type specification for constructor invalid"); | |
5362b086 | 9441 | |
1f84ec23 MM |
9442 | /* In the new ABI constructors do not return a value. */ |
9443 | type = void_type_node; | |
3dbc07b6 MM |
9444 | break; |
9445 | ||
9446 | case sfk_destructor: | |
9447 | if (type) | |
9448 | cp_error ("return type specification for destructor invalid"); | |
9449 | type = void_type_node; | |
9450 | break; | |
9451 | ||
9452 | case sfk_conversion: | |
9453 | if (type && !same_type_p (type, optype)) | |
9454 | cp_error ("operator `%T' declared to return `%T'", optype, type); | |
9455 | else if (type) | |
9456 | cp_pedwarn ("return type specified for `operator %T'", optype); | |
9457 | type = optype; | |
9458 | break; | |
9459 | ||
9460 | default: | |
9461 | my_friendly_abort (20000408); | |
9462 | break; | |
9463 | } | |
9464 | ||
9465 | return type; | |
9466 | } | |
9467 | ||
8d08fdba MS |
9468 | /* Given declspecs and a declarator, |
9469 | determine the name and type of the object declared | |
9470 | and construct a ..._DECL node for it. | |
9471 | (In one case we can return a ..._TYPE node instead. | |
9472 | For invalid input we sometimes return 0.) | |
9473 | ||
9474 | DECLSPECS is a chain of tree_list nodes whose value fields | |
9475 | are the storage classes and type specifiers. | |
9476 | ||
9477 | DECL_CONTEXT says which syntactic context this declaration is in: | |
9478 | NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL. | |
9479 | FUNCDEF for a function definition. Like NORMAL but a few different | |
9480 | error messages in each case. Return value may be zero meaning | |
9481 | this definition is too screwy to try to parse. | |
9482 | MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to | |
9483 | handle member functions (which have FIELD context). | |
9484 | Return value may be zero meaning this definition is too screwy to | |
9485 | try to parse. | |
9486 | PARM for a parameter declaration (either within a function prototype | |
9487 | or before a function body). Make a PARM_DECL, or return void_type_node. | |
db5ae43f | 9488 | CATCHPARM for a parameter declaration before a catch clause. |
8d08fdba MS |
9489 | TYPENAME if for a typename (in a cast or sizeof). |
9490 | Don't make a DECL node; just return the ..._TYPE node. | |
9491 | FIELD for a struct or union field; make a FIELD_DECL. | |
9492 | BITFIELD for a field with specified width. | |
9493 | INITIALIZED is 1 if the decl has an initializer. | |
9494 | ||
b17e2870 JM |
9495 | ATTRLIST is a TREE_LIST node with prefix attributes in TREE_VALUE and |
9496 | normal attributes in TREE_PURPOSE, or NULL_TREE. | |
9497 | ||
70adf8a9 | 9498 | In the TYPENAME case, DECLARATOR is really an abstract declarator. |
8d08fdba MS |
9499 | It may also be so in the PARM case, for a prototype where the |
9500 | argument type is specified but not the name. | |
9501 | ||
9502 | This function is where the complicated C meanings of `static' | |
9503 | and `extern' are interpreted. | |
9504 | ||
9505 | For C++, if there is any monkey business to do, the function which | |
9506 | calls this one must do it, i.e., prepending instance variables, | |
9507 | renaming overloaded function names, etc. | |
9508 | ||
9509 | Note that for this C++, it is an error to define a method within a class | |
9510 | which does not belong to that class. | |
9511 | ||
9512 | Except in the case where SCOPE_REFs are implicitly known (such as | |
9513 | methods within a class being redundantly qualified), | |
9514 | declarations which involve SCOPE_REFs are returned as SCOPE_REFs | |
9515 | (class_name::decl_name). The caller must also deal with this. | |
9516 | ||
9517 | If a constructor or destructor is seen, and the context is FIELD, | |
9518 | then the type gains the attribute TREE_HAS_x. If such a declaration | |
9519 | is erroneous, NULL_TREE is returned. | |
9520 | ||
9521 | QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member | |
535233a8 NS |
9522 | function, these are the qualifiers to give to the `this' pointer. We |
9523 | apply TYPE_QUAL_RESTRICT to the this ptr, not the object. | |
8d08fdba MS |
9524 | |
9525 | May return void_type_node if the declarator turned out to be a friend. | |
9526 | See grokfield for details. */ | |
9527 | ||
8d08fdba | 9528 | tree |
c11b6f21 | 9529 | grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist) |
8d08fdba MS |
9530 | tree declspecs; |
9531 | tree declarator; | |
9532 | enum decl_context decl_context; | |
9533 | int initialized; | |
c11b6f21 | 9534 | tree attrlist; |
8d08fdba MS |
9535 | { |
9536 | RID_BIT_TYPE specbits; | |
9537 | int nclasses = 0; | |
9538 | tree spec; | |
9539 | tree type = NULL_TREE; | |
9540 | int longlong = 0; | |
9541 | int constp; | |
91063b51 | 9542 | int restrictp; |
8d08fdba | 9543 | int volatilep; |
91063b51 | 9544 | int type_quals; |
db5ae43f | 9545 | int virtualp, explicitp, friendp, inlinep, staticp; |
8d08fdba MS |
9546 | int explicit_int = 0; |
9547 | int explicit_char = 0; | |
37c46b43 | 9548 | int defaulted_int = 0; |
8d08fdba | 9549 | tree typedef_decl = NULL_TREE; |
9c0758dd | 9550 | const char *name; |
8d08fdba MS |
9551 | tree typedef_type = NULL_TREE; |
9552 | int funcdef_flag = 0; | |
9553 | enum tree_code innermost_code = ERROR_MARK; | |
9554 | int bitfield = 0; | |
6125f3be DE |
9555 | #if 0 |
9556 | /* See the code below that used this. */ | |
f6abb50a | 9557 | tree decl_machine_attr = NULL_TREE; |
6125f3be | 9558 | #endif |
8d08fdba MS |
9559 | /* Set this to error_mark_node for FIELD_DECLs we could not handle properly. |
9560 | All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */ | |
9561 | tree init = NULL_TREE; | |
9562 | ||
9563 | /* Keep track of what sort of function is being processed | |
9564 | so that we can warn about default return values, or explicit | |
9565 | return values which do not match prescribed defaults. */ | |
3dbc07b6 | 9566 | special_function_kind sfk = sfk_none; |
8d08fdba MS |
9567 | |
9568 | tree dname = NULL_TREE; | |
9569 | tree ctype = current_class_type; | |
9570 | tree ctor_return_type = NULL_TREE; | |
9571 | enum overload_flags flags = NO_SPECIAL; | |
8d08fdba | 9572 | tree quals = NULL_TREE; |
c11b6f21 | 9573 | tree raises = NULL_TREE; |
386b8a85 | 9574 | int template_count = 0; |
2c73f9f5 | 9575 | tree in_namespace = NULL_TREE; |
1eab9b56 JM |
9576 | tree inner_attrs; |
9577 | int ignore_attrs; | |
8d08fdba MS |
9578 | |
9579 | RIDBIT_RESET_ALL (specbits); | |
9580 | if (decl_context == FUNCDEF) | |
9581 | funcdef_flag = 1, decl_context = NORMAL; | |
9582 | else if (decl_context == MEMFUNCDEF) | |
9583 | funcdef_flag = -1, decl_context = FIELD; | |
9584 | else if (decl_context == BITFIELD) | |
9585 | bitfield = 1, decl_context = FIELD; | |
9586 | ||
8d08fdba MS |
9587 | /* Look inside a declarator for the name being declared |
9588 | and get it as a string, for an error message. */ | |
9589 | { | |
be99da77 MS |
9590 | tree *next = &declarator; |
9591 | register tree decl; | |
8d08fdba MS |
9592 | name = NULL; |
9593 | ||
be99da77 MS |
9594 | while (next && *next) |
9595 | { | |
9596 | decl = *next; | |
9597 | switch (TREE_CODE (decl)) | |
8d08fdba | 9598 | { |
52fbc847 JM |
9599 | case TREE_LIST: |
9600 | /* For attributes. */ | |
9601 | next = &TREE_VALUE (decl); | |
9602 | break; | |
9603 | ||
be99da77 MS |
9604 | case COND_EXPR: |
9605 | ctype = NULL_TREE; | |
9606 | next = &TREE_OPERAND (decl, 0); | |
9607 | break; | |
8d08fdba | 9608 | |
2c73f9f5 | 9609 | case BIT_NOT_EXPR: /* For C++ destructors! */ |
8d08fdba | 9610 | { |
be99da77 MS |
9611 | tree name = TREE_OPERAND (decl, 0); |
9612 | tree rename = NULL_TREE; | |
9613 | ||
9614 | my_friendly_assert (flags == NO_SPECIAL, 152); | |
9615 | flags = DTOR_FLAG; | |
3dbc07b6 | 9616 | sfk = sfk_destructor; |
5566b478 MS |
9617 | if (TREE_CODE (name) == TYPE_DECL) |
9618 | TREE_OPERAND (decl, 0) = name = constructor_name (name); | |
be99da77 MS |
9619 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153); |
9620 | if (ctype == NULL_TREE) | |
9621 | { | |
9622 | if (current_class_type == NULL_TREE) | |
9623 | { | |
8251199e | 9624 | error ("destructors must be member functions"); |
be99da77 MS |
9625 | flags = NO_SPECIAL; |
9626 | } | |
9627 | else | |
9628 | { | |
9629 | tree t = constructor_name (current_class_name); | |
9630 | if (t != name) | |
9631 | rename = t; | |
9632 | } | |
9633 | } | |
8d08fdba | 9634 | else |
be99da77 MS |
9635 | { |
9636 | tree t = constructor_name (ctype); | |
9637 | if (t != name) | |
9638 | rename = t; | |
9639 | } | |
51c184be | 9640 | |
be99da77 | 9641 | if (rename) |
39211cd5 | 9642 | { |
8251199e | 9643 | cp_error ("destructor `%T' must match class name `%T'", |
5566b478 | 9644 | name, rename); |
be99da77 | 9645 | TREE_OPERAND (decl, 0) = rename; |
39211cd5 | 9646 | } |
be99da77 | 9647 | next = &name; |
51c184be | 9648 | } |
be99da77 | 9649 | break; |
8d08fdba | 9650 | |
be99da77 | 9651 | case ADDR_EXPR: /* C++ reference declaration */ |
2c73f9f5 | 9652 | /* Fall through. */ |
be99da77 MS |
9653 | case ARRAY_REF: |
9654 | case INDIRECT_REF: | |
9655 | ctype = NULL_TREE; | |
9656 | innermost_code = TREE_CODE (decl); | |
9657 | next = &TREE_OPERAND (decl, 0); | |
9658 | break; | |
8d08fdba | 9659 | |
be99da77 | 9660 | case CALL_EXPR: |
43f887f9 | 9661 | if (parmlist_is_exprlist (CALL_DECLARATOR_PARMS (decl))) |
8d08fdba | 9662 | { |
b17e2870 JM |
9663 | /* This is actually a variable declaration using |
9664 | constructor syntax. We need to call start_decl and | |
9665 | cp_finish_decl so we can get the variable | |
9666 | initialized... */ | |
9667 | ||
9668 | tree attributes, prefix_attributes; | |
be99da77 MS |
9669 | |
9670 | *next = TREE_OPERAND (decl, 0); | |
43f887f9 | 9671 | init = CALL_DECLARATOR_PARMS (decl); |
be99da77 | 9672 | |
b17e2870 JM |
9673 | if (attrlist) |
9674 | { | |
9675 | attributes = TREE_PURPOSE (attrlist); | |
9676 | prefix_attributes = TREE_VALUE (attrlist); | |
9677 | } | |
9678 | else | |
9679 | { | |
9680 | attributes = NULL_TREE; | |
9681 | prefix_attributes = NULL_TREE; | |
9682 | } | |
9683 | ||
9684 | decl = start_decl (declarator, declspecs, 1, | |
9685 | attributes, prefix_attributes); | |
9fc336c7 | 9686 | decl_type_access_control (decl); |
1eb0072d JM |
9687 | if (decl) |
9688 | { | |
9689 | /* Look for __unused__ attribute */ | |
9690 | if (TREE_USED (TREE_TYPE (decl))) | |
9691 | TREE_USED (decl) = 1; | |
9692 | finish_decl (decl, init, NULL_TREE); | |
9693 | } | |
9694 | else | |
9695 | cp_error ("invalid declarator"); | |
be99da77 | 9696 | return 0; |
8d08fdba | 9697 | } |
be99da77 MS |
9698 | innermost_code = TREE_CODE (decl); |
9699 | if (decl_context == FIELD && ctype == NULL_TREE) | |
9700 | ctype = current_class_type; | |
45537677 | 9701 | if (ctype |
c11b6f21 | 9702 | && TREE_OPERAND (decl, 0) |
45537677 MS |
9703 | && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL |
9704 | && ((DECL_NAME (TREE_OPERAND (decl, 0)) | |
9705 | == constructor_name_full (ctype)) | |
9706 | || (DECL_NAME (TREE_OPERAND (decl, 0)) | |
9707 | == constructor_name (ctype))))) | |
be99da77 MS |
9708 | TREE_OPERAND (decl, 0) = constructor_name (ctype); |
9709 | next = &TREE_OPERAND (decl, 0); | |
9710 | decl = *next; | |
9711 | if (ctype != NULL_TREE | |
9712 | && decl != NULL_TREE && flags != DTOR_FLAG | |
9713 | && decl == constructor_name (ctype)) | |
8d08fdba | 9714 | { |
3dbc07b6 | 9715 | sfk = sfk_constructor; |
be99da77 | 9716 | ctor_return_type = ctype; |
8d08fdba | 9717 | } |
be99da77 MS |
9718 | ctype = NULL_TREE; |
9719 | break; | |
68642fb6 | 9720 | |
386b8a85 JM |
9721 | case TEMPLATE_ID_EXPR: |
9722 | { | |
9723 | tree fns = TREE_OPERAND (decl, 0); | |
9724 | ||
9725 | if (TREE_CODE (fns) == LOOKUP_EXPR) | |
9726 | fns = TREE_OPERAND (fns, 0); | |
9727 | ||
8f032717 MM |
9728 | dname = fns; |
9729 | if (TREE_CODE (dname) == COMPONENT_REF) | |
9730 | dname = TREE_OPERAND (dname, 1); | |
9731 | if (TREE_CODE (dname) != IDENTIFIER_NODE) | |
9732 | { | |
9733 | my_friendly_assert (is_overloaded_fn (dname), | |
9734 | 19990331); | |
9735 | dname = DECL_NAME (get_first_fn (dname)); | |
9736 | } | |
386b8a85 | 9737 | } |
2c73f9f5 | 9738 | /* Fall through. */ |
be99da77 MS |
9739 | |
9740 | case IDENTIFIER_NODE: | |
386b8a85 JM |
9741 | if (TREE_CODE (decl) == IDENTIFIER_NODE) |
9742 | dname = decl; | |
9743 | ||
be99da77 MS |
9744 | next = 0; |
9745 | ||
0e5921e8 | 9746 | if (C_IS_RESERVED_WORD (dname)) |
8d08fdba | 9747 | { |
8251199e | 9748 | cp_error ("declarator-id missing; using reserved word `%D'", |
be99da77 MS |
9749 | dname); |
9750 | name = IDENTIFIER_POINTER (dname); | |
8d08fdba | 9751 | } |
596ea4e5 | 9752 | else if (!IDENTIFIER_TYPENAME_P (dname)) |
be99da77 | 9753 | name = IDENTIFIER_POINTER (dname); |
8d08fdba MS |
9754 | else |
9755 | { | |
596ea4e5 AS |
9756 | my_friendly_assert (flags == NO_SPECIAL, 154); |
9757 | flags = TYPENAME_FLAG; | |
9758 | ctor_return_type = TREE_TYPE (dname); | |
9759 | sfk = sfk_conversion; | |
9760 | if (IDENTIFIER_GLOBAL_VALUE (dname) | |
5362b086 | 9761 | && (TREE_CODE (IDENTIFIER_GLOBAL_VALUE (dname)) |
596ea4e5 AS |
9762 | == TYPE_DECL)) |
9763 | name = IDENTIFIER_POINTER (dname); | |
9764 | else | |
9765 | name = "<invalid operator>"; | |
8d08fdba | 9766 | } |
be99da77 | 9767 | break; |
8d08fdba | 9768 | |
be99da77 MS |
9769 | /* C++ extension */ |
9770 | case SCOPE_REF: | |
9771 | { | |
9772 | /* Perform error checking, and decide on a ctype. */ | |
9773 | tree cname = TREE_OPERAND (decl, 0); | |
9774 | if (cname == NULL_TREE) | |
9775 | ctype = NULL_TREE; | |
2c73f9f5 ML |
9776 | else if (TREE_CODE (cname) == NAMESPACE_DECL) |
9777 | { | |
9778 | ctype = NULL_TREE; | |
9779 | in_namespace = TREE_OPERAND (decl, 0); | |
9780 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9781 | } | |
be99da77 MS |
9782 | else if (! is_aggr_type (cname, 1)) |
9783 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9784 | /* Must test TREE_OPERAND (decl, 1), in case user gives | |
9785 | us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */ | |
9786 | else if (TREE_OPERAND (decl, 1) | |
9787 | && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF) | |
9788 | ctype = cname; | |
73b0fce8 | 9789 | else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM |
a1281f45 | 9790 | || TREE_CODE (cname) == BOUND_TEMPLATE_TEMPLATE_PARM) |
5566b478 | 9791 | { |
8251199e | 9792 | cp_error ("`%T::%D' is not a valid declarator", cname, |
5566b478 | 9793 | TREE_OPERAND (decl, 1)); |
8251199e | 9794 | cp_error (" perhaps you want `typename %T::%D' to make it a type", |
5566b478 MS |
9795 | cname, TREE_OPERAND (decl, 1)); |
9796 | return void_type_node; | |
9797 | } | |
be99da77 MS |
9798 | else if (ctype == NULL_TREE) |
9799 | ctype = cname; | |
9800 | else if (TREE_COMPLEXITY (decl) == current_class_depth) | |
9801 | TREE_OPERAND (decl, 0) = ctype; | |
9802 | else | |
9803 | { | |
9804 | if (! UNIQUELY_DERIVED_FROM_P (cname, ctype)) | |
9805 | { | |
8251199e | 9806 | cp_error ("type `%T' is not derived from type `%T'", |
be99da77 MS |
9807 | cname, ctype); |
9808 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
9809 | } | |
9810 | else | |
9811 | ctype = cname; | |
9812 | } | |
9813 | ||
c91a56d2 MS |
9814 | if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL |
9815 | && ((DECL_NAME (TREE_OPERAND (decl, 1)) | |
9816 | == constructor_name_full (ctype)) | |
9817 | || (DECL_NAME (TREE_OPERAND (decl, 1)) | |
9818 | == constructor_name (ctype)))) | |
be99da77 MS |
9819 | TREE_OPERAND (decl, 1) = constructor_name (ctype); |
9820 | next = &TREE_OPERAND (decl, 1); | |
9821 | decl = *next; | |
9822 | if (ctype) | |
9823 | { | |
9824 | if (TREE_CODE (decl) == IDENTIFIER_NODE | |
9825 | && constructor_name (ctype) == decl) | |
9826 | { | |
3dbc07b6 | 9827 | sfk = sfk_constructor; |
be99da77 MS |
9828 | ctor_return_type = ctype; |
9829 | } | |
9830 | else if (TREE_CODE (decl) == BIT_NOT_EXPR | |
9831 | && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE | |
9832 | && (constructor_name (ctype) == TREE_OPERAND (decl, 0) | |
9833 | || constructor_name_full (ctype) == TREE_OPERAND (decl, 0))) | |
9834 | { | |
3dbc07b6 | 9835 | sfk = sfk_destructor; |
be99da77 MS |
9836 | ctor_return_type = ctype; |
9837 | flags = DTOR_FLAG; | |
9838 | TREE_OPERAND (decl, 0) = constructor_name (ctype); | |
9839 | next = &TREE_OPERAND (decl, 0); | |
9840 | } | |
9841 | } | |
9842 | } | |
9843 | break; | |
9844 | ||
9845 | case ERROR_MARK: | |
9846 | next = 0; | |
9847 | break; | |
9848 | ||
45537677 MS |
9849 | case TYPE_DECL: |
9850 | /* Parse error puts this typespec where | |
9851 | a declarator should go. */ | |
8251199e | 9852 | cp_error ("`%T' specified as declarator-id", DECL_NAME (decl)); |
45537677 | 9853 | if (TREE_TYPE (decl) == current_class_type) |
8251199e | 9854 | cp_error (" perhaps you want `%T' for a constructor", |
45537677 MS |
9855 | current_class_name); |
9856 | dname = DECL_NAME (decl); | |
9857 | name = IDENTIFIER_POINTER (dname); | |
9858 | ||
e92cc029 | 9859 | /* Avoid giving two errors for this. */ |
45537677 MS |
9860 | IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE; |
9861 | ||
58010b57 | 9862 | declspecs = tree_cons (NULL_TREE, integer_type_node, declspecs); |
45537677 MS |
9863 | *next = dname; |
9864 | next = 0; | |
9865 | break; | |
9866 | ||
be99da77 | 9867 | default: |
8251199e | 9868 | cp_compiler_error ("`%D' as declarator", decl); |
be99da77 | 9869 | return 0; /* We used to do a 155 abort here. */ |
8d08fdba | 9870 | } |
be99da77 | 9871 | } |
8d08fdba MS |
9872 | } |
9873 | ||
9874 | /* A function definition's declarator must have the form of | |
9875 | a function declarator. */ | |
9876 | ||
9877 | if (funcdef_flag && innermost_code != CALL_EXPR) | |
9878 | return 0; | |
9879 | ||
e1cd6e56 MS |
9880 | if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG) |
9881 | && innermost_code != CALL_EXPR | |
9882 | && ! (ctype && declspecs == NULL_TREE)) | |
9883 | { | |
8251199e | 9884 | cp_error ("declaration of `%D' as non-function", dname); |
e1cd6e56 MS |
9885 | return void_type_node; |
9886 | } | |
9887 | ||
8d08fdba MS |
9888 | /* Anything declared one level down from the top level |
9889 | must be one of the parameters of a function | |
9890 | (because the body is at least two levels down). */ | |
9891 | ||
9892 | /* This heuristic cannot be applied to C++ nodes! Fixed, however, | |
9893 | by not allowing C++ class definitions to specify their parameters | |
9894 | with xdecls (must be spec.d in the parmlist). | |
9895 | ||
9896 | Since we now wait to push a class scope until we are sure that | |
9897 | we are in a legitimate method context, we must set oldcname | |
a9aedbc2 MS |
9898 | explicitly (since current_class_name is not yet alive). |
9899 | ||
9900 | We also want to avoid calling this a PARM if it is in a namespace. */ | |
8d08fdba | 9901 | |
9188c363 | 9902 | if (decl_context == NORMAL && !toplevel_bindings_p ()) |
a9aedbc2 MS |
9903 | { |
9904 | struct binding_level *b = current_binding_level; | |
9905 | current_binding_level = b->level_chain; | |
9906 | if (current_binding_level != 0 && toplevel_bindings_p ()) | |
9907 | decl_context = PARM; | |
9908 | current_binding_level = b; | |
9909 | } | |
8d08fdba | 9910 | |
34fc957d NS |
9911 | if (name == NULL) |
9912 | name = decl_context == PARM ? "parameter" : "type name"; | |
68642fb6 | 9913 | |
8d08fdba MS |
9914 | /* Look through the decl specs and record which ones appear. |
9915 | Some typespecs are defined as built-in typenames. | |
9916 | Others, the ones that are modifiers of other types, | |
9917 | are represented by bits in SPECBITS: set the bits for | |
9918 | the modifiers that appear. Storage class keywords are also in SPECBITS. | |
9919 | ||
9920 | If there is a typedef name or a type, store the type in TYPE. | |
9921 | This includes builtin typedefs such as `int'. | |
9922 | ||
9923 | Set EXPLICIT_INT if the type is `int' or `char' and did not | |
9924 | come from a user typedef. | |
9925 | ||
9926 | Set LONGLONG if `long' is mentioned twice. | |
9927 | ||
9928 | For C++, constructors and destructors have their own fast treatment. */ | |
9929 | ||
9930 | for (spec = declspecs; spec; spec = TREE_CHAIN (spec)) | |
9931 | { | |
9932 | register int i; | |
9933 | register tree id; | |
9934 | ||
9935 | /* Certain parse errors slip through. For example, | |
9936 | `int class;' is not caught by the parser. Try | |
9937 | weakly to recover here. */ | |
9938 | if (TREE_CODE (spec) != TREE_LIST) | |
9939 | return 0; | |
9940 | ||
9941 | id = TREE_VALUE (spec); | |
9942 | ||
9943 | if (TREE_CODE (id) == IDENTIFIER_NODE) | |
9944 | { | |
a3203465 MS |
9945 | if (id == ridpointers[(int) RID_INT] |
9946 | || id == ridpointers[(int) RID_CHAR] | |
9947 | || id == ridpointers[(int) RID_BOOL] | |
9948 | || id == ridpointers[(int) RID_WCHAR]) | |
8d08fdba MS |
9949 | { |
9950 | if (type) | |
8ccc31eb MS |
9951 | { |
9952 | if (id == ridpointers[(int) RID_BOOL]) | |
8251199e | 9953 | error ("`bool' is now a keyword"); |
8ccc31eb | 9954 | else |
8251199e | 9955 | cp_error ("extraneous `%T' ignored", id); |
8ccc31eb | 9956 | } |
8d08fdba MS |
9957 | else |
9958 | { | |
a3203465 MS |
9959 | if (id == ridpointers[(int) RID_INT]) |
9960 | explicit_int = 1; | |
9961 | else if (id == ridpointers[(int) RID_CHAR]) | |
9962 | explicit_char = 1; | |
8d08fdba MS |
9963 | type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id)); |
9964 | } | |
9965 | goto found; | |
9966 | } | |
e92cc029 | 9967 | /* C++ aggregate types. */ |
8d08fdba MS |
9968 | if (IDENTIFIER_HAS_TYPE_VALUE (id)) |
9969 | { | |
9970 | if (type) | |
8251199e | 9971 | cp_error ("multiple declarations `%T' and `%T'", type, id); |
8d08fdba MS |
9972 | else |
9973 | type = IDENTIFIER_TYPE_VALUE (id); | |
9974 | goto found; | |
9975 | } | |
9976 | ||
f376e137 | 9977 | for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++) |
8d08fdba MS |
9978 | { |
9979 | if (ridpointers[i] == id) | |
9980 | { | |
9981 | if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits)) | |
9982 | { | |
795add94 | 9983 | if (pedantic && ! in_system_header && warn_long_long) |
cb9a3ff8 | 9984 | pedwarn ("ISO C++ does not support `long long'"); |
9a3b49ac | 9985 | if (longlong) |
8251199e | 9986 | error ("`long long long' is too long for GCC"); |
8d08fdba MS |
9987 | else |
9988 | longlong = 1; | |
9989 | } | |
9990 | else if (RIDBIT_SETP (i, specbits)) | |
8251199e | 9991 | pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id)); |
8d08fdba MS |
9992 | RIDBIT_SET (i, specbits); |
9993 | goto found; | |
9994 | } | |
9995 | } | |
9996 | } | |
e92cc029 | 9997 | /* C++ aggregate types. */ |
1899c3a4 | 9998 | else if (TREE_CODE (id) == TYPE_DECL) |
45537677 MS |
9999 | { |
10000 | if (type) | |
8251199e | 10001 | cp_error ("multiple declarations `%T' and `%T'", type, |
45537677 MS |
10002 | TREE_TYPE (id)); |
10003 | else | |
5566b478 MS |
10004 | { |
10005 | type = TREE_TYPE (id); | |
10006 | TREE_VALUE (spec) = type; | |
10007 | } | |
45537677 MS |
10008 | goto found; |
10009 | } | |
8d08fdba | 10010 | if (type) |
8251199e | 10011 | error ("two or more data types in declaration of `%s'", name); |
8d08fdba MS |
10012 | else if (TREE_CODE (id) == IDENTIFIER_NODE) |
10013 | { | |
10014 | register tree t = lookup_name (id, 1); | |
10015 | if (!t || TREE_CODE (t) != TYPE_DECL) | |
8251199e | 10016 | error ("`%s' fails to be a typedef or built in type", |
8d08fdba MS |
10017 | IDENTIFIER_POINTER (id)); |
10018 | else | |
10019 | { | |
10020 | type = TREE_TYPE (t); | |
6125f3be DE |
10021 | #if 0 |
10022 | /* See the code below that used this. */ | |
f6abb50a | 10023 | decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id); |
6125f3be | 10024 | #endif |
8d08fdba MS |
10025 | typedef_decl = t; |
10026 | } | |
10027 | } | |
bd6dd845 | 10028 | else if (id != error_mark_node) |
8d08fdba MS |
10029 | /* Can't change CLASS nodes into RECORD nodes here! */ |
10030 | type = id; | |
10031 | ||
10032 | found: ; | |
10033 | } | |
10034 | ||
10035 | typedef_type = type; | |
10036 | ||
37c46b43 | 10037 | /* No type at all: default to `int', and set DEFAULTED_INT |
6eabb241 | 10038 | because it was not a user-defined typedef. */ |
8d08fdba | 10039 | |
a3203465 MS |
10040 | if (type == NULL_TREE |
10041 | && (RIDBIT_SETP (RID_SIGNED, specbits) | |
10042 | || RIDBIT_SETP (RID_UNSIGNED, specbits) | |
10043 | || RIDBIT_SETP (RID_LONG, specbits) | |
10044 | || RIDBIT_SETP (RID_SHORT, specbits))) | |
10045 | { | |
10046 | /* These imply 'int'. */ | |
10047 | type = integer_type_node; | |
37c46b43 | 10048 | defaulted_int = 1; |
a3203465 MS |
10049 | } |
10050 | ||
3dbc07b6 MM |
10051 | if (sfk != sfk_none) |
10052 | type = check_special_function_return_type (sfk, type, | |
3dbc07b6 MM |
10053 | ctor_return_type); |
10054 | else if (type == NULL_TREE) | |
8d08fdba | 10055 | { |
3dbc07b6 MM |
10056 | int is_main; |
10057 | ||
8d08fdba | 10058 | explicit_int = -1; |
3dbc07b6 | 10059 | |
41eff652 JM |
10060 | /* We handle `main' specially here, because 'main () { }' is so |
10061 | common. With no options, it is allowed. With -Wreturn-type, | |
10062 | it is a warning. It is only an error with -pedantic-errors. */ | |
3dbc07b6 MM |
10063 | is_main = (funcdef_flag |
10064 | && MAIN_NAME_P (dname) | |
10065 | && ctype == NULL_TREE | |
10066 | && in_namespace == NULL_TREE | |
10067 | && current_namespace == global_namespace); | |
10068 | ||
10069 | if (in_system_header || flag_ms_extensions) | |
10070 | /* Allow it, sigh. */; | |
10071 | else if (pedantic || ! is_main) | |
10072 | cp_pedwarn ("ISO C++ forbids declaration of `%s' with no type", | |
10073 | name); | |
10074 | else if (warn_return_type) | |
10075 | cp_warning ("ISO C++ forbids declaration of `%s' with no type", | |
10076 | name); | |
41eff652 | 10077 | |
3dbc07b6 | 10078 | type = integer_type_node; |
51c184be | 10079 | } |
8d08fdba MS |
10080 | |
10081 | ctype = NULL_TREE; | |
10082 | ||
10083 | /* Now process the modifiers that were specified | |
10084 | and check for invalid combinations. */ | |
10085 | ||
10086 | /* Long double is a special combination. */ | |
10087 | ||
10088 | if (RIDBIT_SETP (RID_LONG, specbits) | |
10089 | && TYPE_MAIN_VARIANT (type) == double_type_node) | |
10090 | { | |
10091 | RIDBIT_RESET (RID_LONG, specbits); | |
68642fb6 | 10092 | type = build_qualified_type (long_double_type_node, |
91063b51 | 10093 | CP_TYPE_QUALS (type)); |
8d08fdba MS |
10094 | } |
10095 | ||
10096 | /* Check all other uses of type modifiers. */ | |
10097 | ||
10098 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
10099 | || RIDBIT_SETP (RID_SIGNED, specbits) | |
10100 | || RIDBIT_SETP (RID_LONG, specbits) | |
10101 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
10102 | { | |
10103 | int ok = 0; | |
10104 | ||
10105 | if (TREE_CODE (type) == REAL_TYPE) | |
8251199e | 10106 | error ("short, signed or unsigned invalid for `%s'", name); |
b7484fbe | 10107 | else if (TREE_CODE (type) != INTEGER_TYPE) |
8251199e | 10108 | error ("long, short, signed or unsigned invalid for `%s'", name); |
8d08fdba MS |
10109 | else if (RIDBIT_SETP (RID_LONG, specbits) |
10110 | && RIDBIT_SETP (RID_SHORT, specbits)) | |
8251199e | 10111 | error ("long and short specified together for `%s'", name); |
8d08fdba MS |
10112 | else if ((RIDBIT_SETP (RID_LONG, specbits) |
10113 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
10114 | && explicit_char) | |
8251199e | 10115 | error ("long or short specified with char for `%s'", name); |
8d08fdba MS |
10116 | else if ((RIDBIT_SETP (RID_LONG, specbits) |
10117 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
10118 | && TREE_CODE (type) == REAL_TYPE) | |
8251199e | 10119 | error ("long or short specified with floating type for `%s'", name); |
8d08fdba MS |
10120 | else if (RIDBIT_SETP (RID_SIGNED, specbits) |
10121 | && RIDBIT_SETP (RID_UNSIGNED, specbits)) | |
8251199e | 10122 | error ("signed and unsigned given together for `%s'", name); |
8d08fdba MS |
10123 | else |
10124 | { | |
10125 | ok = 1; | |
37c46b43 | 10126 | if (!explicit_int && !defaulted_int && !explicit_char && pedantic) |
8d08fdba | 10127 | { |
8251199e | 10128 | pedwarn ("long, short, signed or unsigned used invalidly for `%s'", |
8d08fdba MS |
10129 | name); |
10130 | if (flag_pedantic_errors) | |
10131 | ok = 0; | |
10132 | } | |
10133 | } | |
10134 | ||
10135 | /* Discard the type modifiers if they are invalid. */ | |
10136 | if (! ok) | |
10137 | { | |
10138 | RIDBIT_RESET (RID_UNSIGNED, specbits); | |
10139 | RIDBIT_RESET (RID_SIGNED, specbits); | |
10140 | RIDBIT_RESET (RID_LONG, specbits); | |
10141 | RIDBIT_RESET (RID_SHORT, specbits); | |
10142 | longlong = 0; | |
10143 | } | |
10144 | } | |
10145 | ||
37c46b43 MS |
10146 | if (RIDBIT_SETP (RID_COMPLEX, specbits) |
10147 | && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE) | |
10148 | { | |
8251199e | 10149 | error ("complex invalid for `%s'", name); |
37c46b43 MS |
10150 | RIDBIT_RESET (RID_COMPLEX, specbits); |
10151 | } | |
10152 | ||
8d08fdba MS |
10153 | /* Decide whether an integer type is signed or not. |
10154 | Optionally treat bitfields as signed by default. */ | |
10155 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
b89c5a7b MM |
10156 | /* [class.bit] |
10157 | ||
10158 | It is implementation-defined whether a plain (neither | |
10159 | explicitly signed or unsigned) char, short, int, or long | |
10160 | bit-field is signed or unsigned. | |
68642fb6 | 10161 | |
b89c5a7b MM |
10162 | Naturally, we extend this to long long as well. Note that |
10163 | this does not include wchar_t. */ | |
10164 | || (bitfield && !flag_signed_bitfields | |
10165 | && RIDBIT_NOTSETP (RID_SIGNED, specbits) | |
10166 | /* A typedef for plain `int' without `signed' can be | |
10167 | controlled just like plain `int', but a typedef for | |
10168 | `signed int' cannot be so controlled. */ | |
68642fb6 | 10169 | && !(typedef_decl |
29bbeb1c | 10170 | && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)) |
b89c5a7b MM |
10171 | && (TREE_CODE (type) == INTEGER_TYPE |
10172 | || TREE_CODE (type) == CHAR_TYPE) | |
29bbeb1c | 10173 | && !same_type_p (TYPE_MAIN_VARIANT (type), wchar_type_node))) |
8d08fdba MS |
10174 | { |
10175 | if (longlong) | |
10176 | type = long_long_unsigned_type_node; | |
10177 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
10178 | type = long_unsigned_type_node; | |
10179 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
10180 | type = short_unsigned_type_node; | |
10181 | else if (type == char_type_node) | |
10182 | type = unsigned_char_type_node; | |
10183 | else if (typedef_decl) | |
10184 | type = unsigned_type (type); | |
10185 | else | |
10186 | type = unsigned_type_node; | |
10187 | } | |
10188 | else if (RIDBIT_SETP (RID_SIGNED, specbits) | |
10189 | && type == char_type_node) | |
10190 | type = signed_char_type_node; | |
10191 | else if (longlong) | |
10192 | type = long_long_integer_type_node; | |
10193 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
10194 | type = long_integer_type_node; | |
10195 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
10196 | type = short_integer_type_node; | |
10197 | ||
37c46b43 MS |
10198 | if (RIDBIT_SETP (RID_COMPLEX, specbits)) |
10199 | { | |
10200 | /* If we just have "complex", it is equivalent to | |
10201 | "complex double", but if any modifiers at all are specified it is | |
10202 | the complex form of TYPE. E.g, "complex short" is | |
10203 | "complex short int". */ | |
10204 | ||
10205 | if (defaulted_int && ! longlong | |
10206 | && ! (RIDBIT_SETP (RID_LONG, specbits) | |
10207 | || RIDBIT_SETP (RID_SHORT, specbits) | |
10208 | || RIDBIT_SETP (RID_SIGNED, specbits) | |
10209 | || RIDBIT_SETP (RID_UNSIGNED, specbits))) | |
10210 | type = complex_double_type_node; | |
10211 | else if (type == integer_type_node) | |
10212 | type = complex_integer_type_node; | |
10213 | else if (type == float_type_node) | |
10214 | type = complex_float_type_node; | |
10215 | else if (type == double_type_node) | |
10216 | type = complex_double_type_node; | |
10217 | else if (type == long_double_type_node) | |
10218 | type = complex_long_double_type_node; | |
10219 | else | |
10220 | type = build_complex_type (type); | |
10221 | } | |
10222 | ||
3dbc07b6 | 10223 | if (sfk == sfk_conversion |
3ac3d9ea | 10224 | && (RIDBIT_SETP (RID_CONST, specbits) |
91063b51 MM |
10225 | || RIDBIT_SETP (RID_VOLATILE, specbits) |
10226 | || RIDBIT_SETP (RID_RESTRICT, specbits))) | |
10227 | cp_error ("qualifiers are not allowed on declaration of `operator %T'", | |
3ac3d9ea MM |
10228 | ctor_return_type); |
10229 | ||
8d08fdba MS |
10230 | /* Set CONSTP if this declaration is `const', whether by |
10231 | explicit specification or via a typedef. | |
10232 | Likewise for VOLATILEP. */ | |
10233 | ||
91063b51 | 10234 | constp = !! RIDBIT_SETP (RID_CONST, specbits) + CP_TYPE_CONST_P (type); |
68642fb6 | 10235 | restrictp = |
91063b51 | 10236 | !! RIDBIT_SETP (RID_RESTRICT, specbits) + CP_TYPE_RESTRICT_P (type); |
68642fb6 | 10237 | volatilep = |
91063b51 MM |
10238 | !! RIDBIT_SETP (RID_VOLATILE, specbits) + CP_TYPE_VOLATILE_P (type); |
10239 | type_quals = ((constp ? TYPE_QUAL_CONST : 0) | |
10240 | | (restrictp ? TYPE_QUAL_RESTRICT : 0) | |
10241 | | (volatilep ? TYPE_QUAL_VOLATILE : 0)); | |
10242 | type = cp_build_qualified_type (type, type_quals); | |
8d08fdba MS |
10243 | staticp = 0; |
10244 | inlinep = !! RIDBIT_SETP (RID_INLINE, specbits); | |
8d08fdba | 10245 | virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits); |
db5ae43f MS |
10246 | RIDBIT_RESET (RID_VIRTUAL, specbits); |
10247 | explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0; | |
10248 | RIDBIT_RESET (RID_EXPLICIT, specbits); | |
8d08fdba | 10249 | |
8d08fdba MS |
10250 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
10251 | staticp = 1 + (decl_context == FIELD); | |
10252 | ||
10253 | if (virtualp && staticp == 2) | |
10254 | { | |
8251199e | 10255 | cp_error ("member `%D' cannot be declared both virtual and static", |
8d08fdba MS |
10256 | dname); |
10257 | staticp = 0; | |
10258 | } | |
10259 | friendp = RIDBIT_SETP (RID_FRIEND, specbits); | |
8d08fdba MS |
10260 | RIDBIT_RESET (RID_FRIEND, specbits); |
10261 | ||
8d08fdba MS |
10262 | /* Warn if two storage classes are given. Default to `auto'. */ |
10263 | ||
10264 | if (RIDBIT_ANY_SET (specbits)) | |
10265 | { | |
10266 | if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++; | |
10267 | if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++; | |
10268 | if (decl_context == PARM && nclasses > 0) | |
8251199e | 10269 | error ("storage class specifiers invalid in parameter declarations"); |
8d08fdba MS |
10270 | if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
10271 | { | |
10272 | if (decl_context == PARM) | |
8251199e | 10273 | error ("typedef declaration invalid in parameter declaration"); |
8d08fdba MS |
10274 | nclasses++; |
10275 | } | |
10276 | if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++; | |
10277 | if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++; | |
10278 | } | |
10279 | ||
10280 | /* Give error if `virtual' is used outside of class declaration. */ | |
b7484fbe MS |
10281 | if (virtualp |
10282 | && (current_class_name == NULL_TREE || decl_context != FIELD)) | |
8d08fdba | 10283 | { |
8251199e | 10284 | error ("virtual outside class declaration"); |
8d08fdba MS |
10285 | virtualp = 0; |
10286 | } | |
8d08fdba MS |
10287 | |
10288 | /* Static anonymous unions are dealt with here. */ | |
10289 | if (staticp && decl_context == TYPENAME | |
10290 | && TREE_CODE (declspecs) == TREE_LIST | |
6bdb8141 | 10291 | && ANON_AGGR_TYPE_P (TREE_VALUE (declspecs))) |
8d08fdba MS |
10292 | decl_context = FIELD; |
10293 | ||
8d08fdba MS |
10294 | /* Warn about storage classes that are invalid for certain |
10295 | kinds of declarations (parameters, typenames, etc.). */ | |
10296 | ||
10297 | if (nclasses > 1) | |
8251199e | 10298 | error ("multiple storage classes in declaration of `%s'", name); |
8d08fdba MS |
10299 | else if (decl_context != NORMAL && nclasses > 0) |
10300 | { | |
db5ae43f | 10301 | if ((decl_context == PARM || decl_context == CATCHPARM) |
8d08fdba MS |
10302 | && (RIDBIT_SETP (RID_REGISTER, specbits) |
10303 | || RIDBIT_SETP (RID_AUTO, specbits))) | |
10304 | ; | |
fc378698 MS |
10305 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
10306 | ; | |
8d08fdba | 10307 | else if (decl_context == FIELD |
d363e7bf AJ |
10308 | /* C++ allows static class elements */ |
10309 | && RIDBIT_SETP (RID_STATIC, specbits)) | |
10310 | /* C++ also allows inlines and signed and unsigned elements, | |
10311 | but in those cases we don't come in here. */ | |
8d08fdba MS |
10312 | ; |
10313 | else | |
10314 | { | |
10315 | if (decl_context == FIELD) | |
10316 | { | |
b7484fbe MS |
10317 | tree tmp = NULL_TREE; |
10318 | register int op = 0; | |
10319 | ||
10320 | if (declarator) | |
10321 | { | |
68642fb6 | 10322 | /* Avoid trying to get an operand off an identifier node. */ |
9e9ff709 MS |
10323 | if (TREE_CODE (declarator) == IDENTIFIER_NODE) |
10324 | tmp = declarator; | |
10325 | else | |
10326 | tmp = TREE_OPERAND (declarator, 0); | |
b7484fbe | 10327 | op = IDENTIFIER_OPNAME_P (tmp); |
596ea4e5 AS |
10328 | if (IDENTIFIER_TYPENAME_P (tmp)) |
10329 | { | |
10330 | if (IDENTIFIER_GLOBAL_VALUE (tmp) | |
5362b086 | 10331 | && (TREE_CODE (IDENTIFIER_GLOBAL_VALUE (tmp)) |
596ea4e5 AS |
10332 | == TYPE_DECL)) |
10333 | name = IDENTIFIER_POINTER (tmp); | |
10334 | else | |
10335 | name = "<invalid operator>"; | |
10336 | } | |
b7484fbe | 10337 | } |
8251199e | 10338 | error ("storage class specified for %s `%s'", |
6eabb241 | 10339 | op ? "member operator" : "field", |
596ea4e5 | 10340 | name); |
8d08fdba MS |
10341 | } |
10342 | else | |
b9d12519 KG |
10343 | { |
10344 | if (decl_context == PARM || decl_context == CATCHPARM) | |
10345 | error ("storage class specified for parameter `%s'", name); | |
10346 | else | |
10347 | error ("storage class specified for typename"); | |
10348 | } | |
8d08fdba MS |
10349 | RIDBIT_RESET (RID_REGISTER, specbits); |
10350 | RIDBIT_RESET (RID_AUTO, specbits); | |
10351 | RIDBIT_RESET (RID_EXTERN, specbits); | |
8d08fdba MS |
10352 | } |
10353 | } | |
10354 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag) | |
10355 | { | |
a9aedbc2 | 10356 | if (toplevel_bindings_p ()) |
8d08fdba | 10357 | { |
59be0cdd | 10358 | /* It's common practice (and completely valid) to have a const |
8d08fdba | 10359 | be initialized and declared extern. */ |
950ad3c3 | 10360 | if (!(type_quals & TYPE_QUAL_CONST)) |
8251199e | 10361 | warning ("`%s' initialized and declared `extern'", name); |
8d08fdba MS |
10362 | } |
10363 | else | |
8251199e | 10364 | error ("`%s' has both `extern' and initializer", name); |
8d08fdba MS |
10365 | } |
10366 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag | |
a9aedbc2 | 10367 | && ! toplevel_bindings_p ()) |
8251199e | 10368 | error ("nested function `%s' declared `extern'", name); |
a9aedbc2 | 10369 | else if (toplevel_bindings_p ()) |
8d08fdba MS |
10370 | { |
10371 | if (RIDBIT_SETP (RID_AUTO, specbits)) | |
8251199e | 10372 | error ("top-level declaration of `%s' specifies `auto'", name); |
8d08fdba MS |
10373 | } |
10374 | ||
909e536a | 10375 | if (nclasses > 0 && friendp) |
8251199e | 10376 | error ("storage class specifiers invalid in friend function declarations"); |
909e536a | 10377 | |
8d08fdba MS |
10378 | /* Now figure out the structure of the declarator proper. |
10379 | Descend through it, creating more complex types, until we reach | |
10380 | the declared identifier (or NULL_TREE, in an absolute declarator). */ | |
10381 | ||
1eab9b56 | 10382 | inner_attrs = NULL_TREE; |
68642fb6 | 10383 | ignore_attrs = 0; |
1eab9b56 | 10384 | |
386b8a85 JM |
10385 | while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE |
10386 | && TREE_CODE (declarator) != TEMPLATE_ID_EXPR) | |
8d08fdba MS |
10387 | { |
10388 | /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]), | |
10389 | an INDIRECT_REF (for *...), | |
10390 | a CALL_EXPR (for ...(...)), | |
10391 | an identifier (for the name being declared) | |
10392 | or a null pointer (for the place in an absolute declarator | |
10393 | where the name was omitted). | |
10394 | For the last two cases, we have just exited the loop. | |
10395 | ||
10396 | For C++ it could also be | |
10397 | a SCOPE_REF (for class :: ...). In this case, we have converted | |
10398 | sensible names to types, and those are the values we use to | |
10399 | qualify the member name. | |
10400 | an ADDR_EXPR (for &...), | |
10401 | a BIT_NOT_EXPR (for destructors) | |
8d08fdba MS |
10402 | |
10403 | At this point, TYPE is the type of elements of an array, | |
10404 | or for a function to return, or for a pointer to point to. | |
10405 | After this sequence of ifs, TYPE is the type of the | |
10406 | array or function or pointer, and DECLARATOR has had its | |
10407 | outermost layer removed. */ | |
10408 | ||
bd6dd845 | 10409 | if (type == error_mark_node) |
8d08fdba MS |
10410 | { |
10411 | if (TREE_CODE (declarator) == SCOPE_REF) | |
10412 | declarator = TREE_OPERAND (declarator, 1); | |
10413 | else | |
10414 | declarator = TREE_OPERAND (declarator, 0); | |
10415 | continue; | |
10416 | } | |
10417 | if (quals != NULL_TREE | |
10418 | && (declarator == NULL_TREE | |
10419 | || TREE_CODE (declarator) != SCOPE_REF)) | |
10420 | { | |
10421 | if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE) | |
10422 | ctype = TYPE_METHOD_BASETYPE (type); | |
10423 | if (ctype != NULL_TREE) | |
10424 | { | |
8d08fdba | 10425 | tree dummy = build_decl (TYPE_DECL, NULL_TREE, type); |
535233a8 | 10426 | grok_method_quals (ctype, dummy, quals); |
8d08fdba | 10427 | type = TREE_TYPE (dummy); |
535233a8 | 10428 | ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type))); |
8d08fdba MS |
10429 | quals = NULL_TREE; |
10430 | } | |
10431 | } | |
1eab9b56 JM |
10432 | |
10433 | /* See the comment for the TREE_LIST case, below. */ | |
10434 | if (ignore_attrs) | |
10435 | ignore_attrs = 0; | |
10436 | else if (inner_attrs) | |
10437 | { | |
10438 | decl_attributes (type, inner_attrs, NULL_TREE); | |
10439 | inner_attrs = NULL_TREE; | |
10440 | } | |
10441 | ||
8d08fdba MS |
10442 | switch (TREE_CODE (declarator)) |
10443 | { | |
52fbc847 JM |
10444 | case TREE_LIST: |
10445 | { | |
10446 | /* We encode a declarator with embedded attributes using | |
1eab9b56 JM |
10447 | a TREE_LIST. The attributes apply to the declarator |
10448 | directly inside them, so we have to skip an iteration | |
10449 | before applying them to the type. If the declarator just | |
10450 | inside is the declarator-id, we apply the attrs to the | |
10451 | decl itself. */ | |
10452 | inner_attrs = TREE_PURPOSE (declarator); | |
10453 | ignore_attrs = 1; | |
52fbc847 | 10454 | declarator = TREE_VALUE (declarator); |
52fbc847 JM |
10455 | } |
10456 | break; | |
10457 | ||
8d08fdba MS |
10458 | case ARRAY_REF: |
10459 | { | |
2848ad0f | 10460 | register tree size; |
8d08fdba | 10461 | |
2848ad0f | 10462 | size = TREE_OPERAND (declarator, 1); |
8d08fdba | 10463 | |
f2e2cbd4 | 10464 | /* VC++ spells a zero-sized array with []. */ |
e8ea7036 MM |
10465 | if (size == NULL_TREE && decl_context == FIELD && ! staticp |
10466 | && ! RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
f2e2cbd4 JM |
10467 | size = integer_zero_node; |
10468 | ||
2848ad0f | 10469 | declarator = TREE_OPERAND (declarator, 0); |
8d08fdba | 10470 | |
2848ad0f | 10471 | type = create_array_type_for_decl (dname, type, size); |
c1b177ec ML |
10472 | |
10473 | /* VLAs never work as fields. */ | |
5362b086 | 10474 | if (decl_context == FIELD && !processing_template_decl |
c1b177ec ML |
10475 | && TREE_CODE (type) == ARRAY_TYPE |
10476 | && TYPE_DOMAIN (type) != NULL_TREE | |
10477 | && !TREE_CONSTANT (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))) | |
10478 | { | |
10479 | cp_error ("size of member `%D' is not constant", dname); | |
10480 | /* Proceed with arbitrary constant size, so that offset | |
10481 | computations don't get confused. */ | |
10482 | type = create_array_type_for_decl (dname, TREE_TYPE (type), | |
10483 | integer_one_node); | |
10484 | } | |
10485 | ||
8d08fdba MS |
10486 | ctype = NULL_TREE; |
10487 | } | |
10488 | break; | |
10489 | ||
10490 | case CALL_EXPR: | |
10491 | { | |
10492 | tree arg_types; | |
f376e137 | 10493 | int funcdecl_p; |
43f887f9 | 10494 | tree inner_parms = CALL_DECLARATOR_PARMS (declarator); |
f376e137 | 10495 | tree inner_decl = TREE_OPERAND (declarator, 0); |
8d08fdba MS |
10496 | |
10497 | /* Declaring a function type. | |
10498 | Make sure we have a valid type for the function to return. */ | |
8d08fdba | 10499 | |
91063b51 | 10500 | /* We now know that the TYPE_QUALS don't apply to the |
14ae7e7d | 10501 | decl, but to its return type. */ |
91063b51 | 10502 | type_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
10503 | |
10504 | /* Warn about some types functions can't return. */ | |
10505 | ||
10506 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
10507 | { | |
8251199e | 10508 | error ("`%s' declared as function returning a function", name); |
8d08fdba MS |
10509 | type = integer_type_node; |
10510 | } | |
10511 | if (TREE_CODE (type) == ARRAY_TYPE) | |
10512 | { | |
8251199e | 10513 | error ("`%s' declared as function returning an array", name); |
8d08fdba MS |
10514 | type = integer_type_node; |
10515 | } | |
10516 | ||
f376e137 MS |
10517 | if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF) |
10518 | inner_decl = TREE_OPERAND (inner_decl, 1); | |
10519 | ||
68642fb6 | 10520 | if (inner_decl && TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR) |
386b8a85 JM |
10521 | inner_decl = dname; |
10522 | ||
b7484fbe | 10523 | /* Pick up type qualifiers which should be applied to `this'. */ |
43f887f9 | 10524 | quals = CALL_DECLARATOR_QUALS (declarator); |
b7484fbe | 10525 | |
c11b6f21 | 10526 | /* Pick up the exception specifications. */ |
43f887f9 | 10527 | raises = CALL_DECLARATOR_EXCEPTION_SPEC (declarator); |
c11b6f21 | 10528 | |
f376e137 MS |
10529 | /* Say it's a definition only for the CALL_EXPR |
10530 | closest to the identifier. */ | |
beb53fb8 | 10531 | funcdecl_p |
68642fb6 | 10532 | = inner_decl |
386b8a85 | 10533 | && (TREE_CODE (inner_decl) == IDENTIFIER_NODE |
68642fb6 | 10534 | || TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR |
386b8a85 | 10535 | || TREE_CODE (inner_decl) == BIT_NOT_EXPR); |
68642fb6 | 10536 | |
8d08fdba MS |
10537 | if (ctype == NULL_TREE |
10538 | && decl_context == FIELD | |
f376e137 | 10539 | && funcdecl_p |
8d08fdba MS |
10540 | && (friendp == 0 || dname == current_class_name)) |
10541 | ctype = current_class_type; | |
10542 | ||
3dbc07b6 | 10543 | if (ctype && sfk == sfk_conversion) |
8d08fdba MS |
10544 | TYPE_HAS_CONVERSION (ctype) = 1; |
10545 | if (ctype && constructor_name (ctype) == dname) | |
10546 | { | |
10547 | /* We are within a class's scope. If our declarator name | |
10548 | is the same as the class name, and we are defining | |
10549 | a function, then it is a constructor/destructor, and | |
10550 | therefore returns a void type. */ | |
10551 | ||
10552 | if (flags == DTOR_FLAG) | |
10553 | { | |
cab1f180 ML |
10554 | /* ISO C++ 12.4/2. A destructor may not be |
10555 | declared const or volatile. A destructor may | |
10556 | not be static. */ | |
8d08fdba | 10557 | if (staticp == 2) |
8251199e | 10558 | error ("destructor cannot be static member function"); |
b7484fbe | 10559 | if (quals) |
8d08fdba | 10560 | { |
4f70a846 MM |
10561 | cp_error ("destructors may not be `%s'", |
10562 | IDENTIFIER_POINTER (TREE_VALUE (quals))); | |
10563 | quals = NULL_TREE; | |
8d08fdba MS |
10564 | } |
10565 | if (decl_context == FIELD) | |
10566 | { | |
4dacf5bd KG |
10567 | if (! member_function_or_else (ctype, |
10568 | current_class_type, | |
10569 | flags)) | |
8d08fdba MS |
10570 | return void_type_node; |
10571 | } | |
10572 | } | |
2c73f9f5 | 10573 | else /* It's a constructor. */ |
8d08fdba | 10574 | { |
db5ae43f MS |
10575 | if (explicitp == 1) |
10576 | explicitp = 2; | |
cab1f180 ML |
10577 | /* ISO C++ 12.1. A constructor may not be |
10578 | declared const or volatile. A constructor may | |
10579 | not be virtual. A constructor may not be | |
10580 | static. */ | |
8d08fdba | 10581 | if (staticp == 2) |
8251199e | 10582 | error ("constructor cannot be static member function"); |
8d08fdba MS |
10583 | if (virtualp) |
10584 | { | |
8251199e | 10585 | pedwarn ("constructors cannot be declared virtual"); |
8d08fdba MS |
10586 | virtualp = 0; |
10587 | } | |
b7484fbe | 10588 | if (quals) |
8d08fdba | 10589 | { |
4f70a846 MM |
10590 | cp_error ("constructors may not be `%s'", |
10591 | IDENTIFIER_POINTER (TREE_VALUE (quals))); | |
10592 | quals = NULL_TREE; | |
d363e7bf | 10593 | } |
8d08fdba | 10594 | { |
51c184be | 10595 | RID_BIT_TYPE tmp_bits; |
4e135bdd | 10596 | memcpy (&tmp_bits, &specbits, sizeof (RID_BIT_TYPE)); |
51c184be MS |
10597 | RIDBIT_RESET (RID_INLINE, tmp_bits); |
10598 | RIDBIT_RESET (RID_STATIC, tmp_bits); | |
10599 | if (RIDBIT_ANY_SET (tmp_bits)) | |
8251199e | 10600 | error ("return value type specifier for constructor ignored"); |
8d08fdba | 10601 | } |
6eabb241 | 10602 | if (decl_context == FIELD) |
8d08fdba | 10603 | { |
4dacf5bd KG |
10604 | if (! member_function_or_else (ctype, |
10605 | current_class_type, | |
10606 | flags)) | |
8d08fdba MS |
10607 | return void_type_node; |
10608 | TYPE_HAS_CONSTRUCTOR (ctype) = 1; | |
3dbc07b6 | 10609 | if (sfk != sfk_constructor) |
8d08fdba MS |
10610 | return NULL_TREE; |
10611 | } | |
10612 | } | |
10613 | if (decl_context == FIELD) | |
10614 | staticp = 0; | |
10615 | } | |
b7484fbe | 10616 | else if (friendp) |
8d08fdba | 10617 | { |
b7484fbe | 10618 | if (initialized) |
8251199e | 10619 | error ("can't initialize friend function `%s'", name); |
b7484fbe MS |
10620 | if (virtualp) |
10621 | { | |
10622 | /* Cannot be both friend and virtual. */ | |
8251199e | 10623 | error ("virtual functions cannot be friends"); |
b7484fbe MS |
10624 | RIDBIT_RESET (RID_FRIEND, specbits); |
10625 | friendp = 0; | |
10626 | } | |
28cbf42c | 10627 | if (decl_context == NORMAL) |
8251199e | 10628 | error ("friend declaration not in class definition"); |
28cbf42c | 10629 | if (current_function_decl && funcdef_flag) |
8251199e | 10630 | cp_error ("can't define friend function `%s' in a local class definition", |
28cbf42c | 10631 | name); |
8d08fdba MS |
10632 | } |
10633 | ||
8d08fdba MS |
10634 | /* Construct the function type and go to the next |
10635 | inner layer of declarator. */ | |
10636 | ||
f376e137 | 10637 | declarator = TREE_OPERAND (declarator, 0); |
8d08fdba | 10638 | |
f376e137 MS |
10639 | /* FIXME: This is where default args should be fully |
10640 | processed. */ | |
8d08fdba | 10641 | |
5cce22b6 | 10642 | arg_types = grokparms (inner_parms); |
8d08fdba | 10643 | |
4f70a846 | 10644 | if (declarator && flags == DTOR_FLAG) |
8d08fdba | 10645 | { |
4f70a846 MM |
10646 | /* A destructor declared in the body of a class will |
10647 | be represented as a BIT_NOT_EXPR. But, we just | |
10648 | want the underlying IDENTIFIER. */ | |
8d08fdba | 10649 | if (TREE_CODE (declarator) == BIT_NOT_EXPR) |
4f70a846 | 10650 | declarator = TREE_OPERAND (declarator, 0); |
68642fb6 | 10651 | |
8b27e9ef | 10652 | if (arg_types != void_list_node) |
8d08fdba | 10653 | { |
4f70a846 MM |
10654 | cp_error ("destructors may not have parameters"); |
10655 | arg_types = void_list_node; | |
10656 | last_function_parms = NULL_TREE; | |
8d08fdba MS |
10657 | } |
10658 | } | |
10659 | ||
d22c8596 | 10660 | /* ANSI says that `const int foo ();' |
8d08fdba | 10661 | does not make the function foo const. */ |
d22c8596 | 10662 | type = build_function_type (type, arg_types); |
42976354 BK |
10663 | |
10664 | { | |
10665 | tree t; | |
10666 | for (t = arg_types; t; t = TREE_CHAIN (t)) | |
10667 | if (TREE_PURPOSE (t) | |
10668 | && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG) | |
10669 | { | |
10670 | add_defarg_fn (type); | |
10671 | break; | |
10672 | } | |
10673 | } | |
8d08fdba MS |
10674 | } |
10675 | break; | |
10676 | ||
10677 | case ADDR_EXPR: | |
10678 | case INDIRECT_REF: | |
10679 | /* Filter out pointers-to-references and references-to-references. | |
10680 | We can get these if a TYPE_DECL is used. */ | |
10681 | ||
10682 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
10683 | { | |
8251199e | 10684 | error ("cannot declare %s to references", |
8d08fdba MS |
10685 | TREE_CODE (declarator) == ADDR_EXPR |
10686 | ? "references" : "pointers"); | |
10687 | declarator = TREE_OPERAND (declarator, 0); | |
10688 | continue; | |
10689 | } | |
10690 | ||
a5894242 MS |
10691 | if (TREE_CODE (type) == OFFSET_TYPE |
10692 | && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE | |
10693 | || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE)) | |
10694 | { | |
8251199e | 10695 | cp_error ("cannot declare pointer to `%#T' member", |
a5894242 MS |
10696 | TREE_TYPE (type)); |
10697 | type = TREE_TYPE (type); | |
10698 | } | |
10699 | ||
61a127b3 MM |
10700 | /* Merge any constancy or volatility into the target type |
10701 | for the pointer. */ | |
10702 | ||
91063b51 MM |
10703 | /* We now know that the TYPE_QUALS don't apply to the decl, |
10704 | but to the target of the pointer. */ | |
10705 | type_quals = TYPE_UNQUALIFIED; | |
8d08fdba | 10706 | |
6eabb241 | 10707 | if (TREE_CODE (declarator) == ADDR_EXPR) |
8d08fdba | 10708 | { |
69851283 MM |
10709 | if (TREE_CODE (type) == VOID_TYPE) |
10710 | error ("invalid type: `void &'"); | |
8d08fdba | 10711 | else |
69851283 | 10712 | type = build_reference_type (type); |
8d08fdba MS |
10713 | } |
10714 | else if (TREE_CODE (type) == METHOD_TYPE) | |
d8f8dca1 | 10715 | type = build_ptrmemfunc_type (build_pointer_type (type)); |
8d08fdba MS |
10716 | else |
10717 | type = build_pointer_type (type); | |
10718 | ||
10719 | /* Process a list of type modifier keywords (such as | |
10720 | const or volatile) that were given inside the `*' or `&'. */ | |
10721 | ||
10722 | if (TREE_TYPE (declarator)) | |
10723 | { | |
10724 | register tree typemodlist; | |
10725 | int erred = 0; | |
91063b51 MM |
10726 | |
10727 | constp = 0; | |
10728 | volatilep = 0; | |
10729 | restrictp = 0; | |
8d08fdba MS |
10730 | for (typemodlist = TREE_TYPE (declarator); typemodlist; |
10731 | typemodlist = TREE_CHAIN (typemodlist)) | |
10732 | { | |
91063b51 MM |
10733 | tree qualifier = TREE_VALUE (typemodlist); |
10734 | ||
10735 | if (qualifier == ridpointers[(int) RID_CONST]) | |
8d08fdba | 10736 | constp++; |
91063b51 | 10737 | else if (qualifier == ridpointers[(int) RID_VOLATILE]) |
8d08fdba | 10738 | volatilep++; |
91063b51 MM |
10739 | else if (qualifier == ridpointers[(int) RID_RESTRICT]) |
10740 | restrictp++; | |
8d08fdba MS |
10741 | else if (!erred) |
10742 | { | |
10743 | erred = 1; | |
91063b51 | 10744 | error ("invalid type modifier within pointer declarator"); |
8d08fdba MS |
10745 | } |
10746 | } | |
10747 | if (constp > 1) | |
8251199e | 10748 | pedwarn ("duplicate `const'"); |
8d08fdba | 10749 | if (volatilep > 1) |
8251199e | 10750 | pedwarn ("duplicate `volatile'"); |
91063b51 MM |
10751 | if (restrictp > 1) |
10752 | pedwarn ("duplicate `restrict'"); | |
10753 | ||
10754 | type_quals = ((constp ? TYPE_QUAL_CONST : 0) | |
10755 | | (restrictp ? TYPE_QUAL_RESTRICT : 0) | |
10756 | | (volatilep ? TYPE_QUAL_VOLATILE : 0)); | |
a0a33927 MS |
10757 | if (TREE_CODE (declarator) == ADDR_EXPR |
10758 | && (constp || volatilep)) | |
10759 | { | |
10760 | if (constp) | |
8251199e | 10761 | pedwarn ("discarding `const' applied to a reference"); |
a0a33927 | 10762 | if (volatilep) |
8251199e | 10763 | pedwarn ("discarding `volatile' applied to a reference"); |
91063b51 | 10764 | type_quals &= ~(TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE); |
a0a33927 | 10765 | } |
91063b51 | 10766 | type = cp_build_qualified_type (type, type_quals); |
8d08fdba MS |
10767 | } |
10768 | declarator = TREE_OPERAND (declarator, 0); | |
10769 | ctype = NULL_TREE; | |
10770 | break; | |
10771 | ||
10772 | case SCOPE_REF: | |
10773 | { | |
10774 | /* We have converted type names to NULL_TREE if the | |
10775 | name was bogus, or to a _TYPE node, if not. | |
10776 | ||
10777 | The variable CTYPE holds the type we will ultimately | |
10778 | resolve to. The code here just needs to build | |
10779 | up appropriate member types. */ | |
10780 | tree sname = TREE_OPERAND (declarator, 1); | |
386b8a85 JM |
10781 | tree t; |
10782 | ||
8d08fdba MS |
10783 | /* Destructors can have their visibilities changed as well. */ |
10784 | if (TREE_CODE (sname) == BIT_NOT_EXPR) | |
10785 | sname = TREE_OPERAND (sname, 0); | |
10786 | ||
10787 | if (TREE_COMPLEXITY (declarator) == 0) | |
10788 | /* This needs to be here, in case we are called | |
10789 | multiple times. */ ; | |
9a68c51f JM |
10790 | else if (TREE_COMPLEXITY (declarator) == -1) |
10791 | /* Namespace member. */ | |
10792 | pop_decl_namespace (); | |
8d08fdba | 10793 | else if (friendp && (TREE_COMPLEXITY (declarator) < 2)) |
2c73f9f5 | 10794 | /* Don't fall out into global scope. Hides real bug? --eichin */ ; |
5566b478 MS |
10795 | else if (! IS_AGGR_TYPE_CODE |
10796 | (TREE_CODE (TREE_OPERAND (declarator, 0)))) | |
10797 | ; | |
8d08fdba MS |
10798 | else if (TREE_COMPLEXITY (declarator) == current_class_depth) |
10799 | { | |
9a3b49ac MS |
10800 | /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq |
10801 | that refer to ctype. They couldn't be resolved earlier | |
10802 | because we hadn't pushed into the class yet. | |
10803 | Example: resolve 'B<T>::type' in | |
10804 | 'B<typename B<T>::type> B<T>::f () { }'. */ | |
10805 | if (current_template_parms | |
10806 | && uses_template_parms (type) | |
10807 | && uses_template_parms (current_class_type)) | |
10808 | { | |
10809 | tree args = current_template_args (); | |
4393e105 | 10810 | type = tsubst (type, args, /*complain=*/1, NULL_TREE); |
9a3b49ac MS |
10811 | } |
10812 | ||
a28e3c7f MS |
10813 | /* This pop_nested_class corresponds to the |
10814 | push_nested_class used to push into class scope for | |
10815 | parsing the argument list of a function decl, in | |
10816 | qualified_id. */ | |
b74a0560 | 10817 | pop_nested_class (); |
8d08fdba MS |
10818 | TREE_COMPLEXITY (declarator) = current_class_depth; |
10819 | } | |
10820 | else | |
10821 | my_friendly_abort (16); | |
10822 | ||
10823 | if (TREE_OPERAND (declarator, 0) == NULL_TREE) | |
10824 | { | |
10825 | /* We had a reference to a global decl, or | |
10826 | perhaps we were given a non-aggregate typedef, | |
10827 | in which case we cleared this out, and should just | |
10828 | keep going as though it wasn't there. */ | |
10829 | declarator = sname; | |
10830 | continue; | |
10831 | } | |
10832 | ctype = TREE_OPERAND (declarator, 0); | |
10833 | ||
386b8a85 | 10834 | t = ctype; |
68642fb6 | 10835 | while (t != NULL_TREE && CLASS_TYPE_P (t)) |
386b8a85 | 10836 | { |
5362b086 | 10837 | /* You're supposed to have one `template <...>' |
da8a7456 MM |
10838 | for every template class, but you don't need one |
10839 | for a full specialization. For example: | |
10840 | ||
10841 | template <class T> struct S{}; | |
10842 | template <> struct S<int> { void f(); }; | |
10843 | void S<int>::f () {} | |
10844 | ||
10845 | is correct; there shouldn't be a `template <>' for | |
10846 | the definition of `S<int>::f'. */ | |
10847 | if (CLASSTYPE_TEMPLATE_INFO (t) | |
10848 | && (CLASSTYPE_TEMPLATE_INSTANTIATION (t) | |
92ecdfb7 NS |
10849 | || uses_template_parms (CLASSTYPE_TI_ARGS (t))) |
10850 | && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t))) | |
386b8a85 | 10851 | template_count += 1; |
da8a7456 | 10852 | |
386b8a85 | 10853 | t = TYPE_MAIN_DECL (t); |
92ecdfb7 | 10854 | t = DECL_CONTEXT (t); |
386b8a85 JM |
10855 | } |
10856 | ||
8d08fdba MS |
10857 | if (sname == NULL_TREE) |
10858 | goto done_scoping; | |
10859 | ||
10860 | if (TREE_CODE (sname) == IDENTIFIER_NODE) | |
10861 | { | |
10862 | /* This is the `standard' use of the scoping operator: | |
10863 | basetype :: member . */ | |
10864 | ||
db5ae43f | 10865 | if (ctype == current_class_type) |
28cbf42c MS |
10866 | { |
10867 | /* class A { | |
10868 | void A::f (); | |
10869 | }; | |
10870 | ||
10871 | Is this ill-formed? */ | |
10872 | ||
10873 | if (pedantic) | |
8251199e | 10874 | cp_pedwarn ("extra qualification `%T::' on member `%s' ignored", |
28cbf42c MS |
10875 | ctype, name); |
10876 | } | |
db5ae43f | 10877 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
8d08fdba | 10878 | { |
eeb75383 | 10879 | if (current_class_type == NULL_TREE || friendp) |
14ae7e7d JM |
10880 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
10881 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
10882 | else |
10883 | { | |
8251199e | 10884 | cp_error ("cannot declare member function `%T::%s' within `%T'", |
a3203465 | 10885 | ctype, name, current_class_type); |
8d08fdba MS |
10886 | return void_type_node; |
10887 | } | |
10888 | } | |
5566b478 | 10889 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits) |
d0f062fb | 10890 | || COMPLETE_TYPE_P (complete_type (ctype))) |
8d08fdba | 10891 | { |
2c73f9f5 | 10892 | /* Have to move this code elsewhere in this function. |
db5ae43f MS |
10893 | this code is used for i.e., typedef int A::M; M *pm; |
10894 | ||
10895 | It is? How? jason 10/2/94 */ | |
8d08fdba | 10896 | |
8d08fdba MS |
10897 | if (current_class_type) |
10898 | { | |
8251199e | 10899 | cp_error ("cannot declare member `%T::%s' within `%T'", |
db5ae43f MS |
10900 | ctype, name, current_class_type); |
10901 | return void_type_node; | |
8d08fdba MS |
10902 | } |
10903 | type = build_offset_type (ctype, type); | |
10904 | } | |
8d08fdba | 10905 | else |
eeb75383 NS |
10906 | { |
10907 | incomplete_type_error (NULL_TREE, ctype); | |
10908 | return error_mark_node; | |
d363e7bf | 10909 | } |
8d08fdba MS |
10910 | |
10911 | declarator = sname; | |
10912 | } | |
8d08fdba MS |
10913 | else if (TREE_CODE (sname) == SCOPE_REF) |
10914 | my_friendly_abort (17); | |
10915 | else | |
10916 | { | |
10917 | done_scoping: | |
10918 | declarator = TREE_OPERAND (declarator, 1); | |
10919 | if (declarator && TREE_CODE (declarator) == CALL_EXPR) | |
10920 | /* In this case, we will deal with it later. */ | |
10921 | ; | |
10922 | else | |
10923 | { | |
10924 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
14ae7e7d JM |
10925 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
10926 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
10927 | else |
10928 | type = build_offset_type (ctype, type); | |
10929 | } | |
10930 | } | |
10931 | } | |
10932 | break; | |
10933 | ||
10934 | case BIT_NOT_EXPR: | |
10935 | declarator = TREE_OPERAND (declarator, 0); | |
10936 | break; | |
10937 | ||
8d08fdba MS |
10938 | case RECORD_TYPE: |
10939 | case UNION_TYPE: | |
10940 | case ENUMERAL_TYPE: | |
10941 | declarator = NULL_TREE; | |
10942 | break; | |
10943 | ||
10944 | case ERROR_MARK: | |
10945 | declarator = NULL_TREE; | |
10946 | break; | |
10947 | ||
10948 | default: | |
10949 | my_friendly_abort (158); | |
10950 | } | |
10951 | } | |
10952 | ||
1eab9b56 JM |
10953 | /* See the comment for the TREE_LIST case, above. */ |
10954 | if (inner_attrs) | |
10955 | { | |
10956 | if (! ignore_attrs) | |
10957 | decl_attributes (type, inner_attrs, NULL_TREE); | |
10958 | else if (attrlist) | |
10959 | TREE_VALUE (attrlist) = chainon (inner_attrs, TREE_VALUE (attrlist)); | |
10960 | else | |
1f8f4a0b | 10961 | attrlist = build_tree_list (NULL_TREE, inner_attrs); |
1eab9b56 JM |
10962 | } |
10963 | ||
419c6212 JM |
10964 | /* Now TYPE has the actual type. */ |
10965 | ||
34fc957d | 10966 | if (explicitp == 1 || (explicitp && friendp)) |
db5ae43f | 10967 | { |
34fc957d NS |
10968 | /* [dcl.fct.spec] The explicit specifier shall only be used in |
10969 | declarations of constructors within a class definition. */ | |
10970 | error ("only declarations of constructors can be `explicit'"); | |
db5ae43f MS |
10971 | explicitp = 0; |
10972 | } | |
10973 | ||
f30432d7 MS |
10974 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) |
10975 | { | |
34fc957d NS |
10976 | if (current_class_name == NULL_TREE || decl_context == PARM || friendp) |
10977 | { | |
10978 | error ("non-member `%s' cannot be declared `mutable'", name); | |
10979 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
10980 | } | |
10981 | else if (decl_context == TYPENAME || RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
f30432d7 | 10982 | { |
34fc957d | 10983 | error ("non-object member `%s' cannot be declared `mutable'", name); |
f30432d7 MS |
10984 | RIDBIT_RESET (RID_MUTABLE, specbits); |
10985 | } | |
34fc957d NS |
10986 | else if (TREE_CODE (type) == FUNCTION_TYPE |
10987 | || TREE_CODE (type) == METHOD_TYPE) | |
10988 | { | |
10989 | error ("function `%s' cannot be declared `mutable'", name); | |
10990 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
10991 | } | |
f30432d7 MS |
10992 | else if (staticp) |
10993 | { | |
8251199e | 10994 | error ("static `%s' cannot be declared `mutable'", name); |
f30432d7 MS |
10995 | RIDBIT_RESET (RID_MUTABLE, specbits); |
10996 | } | |
34fc957d NS |
10997 | else if (type_quals & TYPE_QUAL_CONST) |
10998 | { | |
10999 | error ("const `%s' cannot be declared `mutable'", name); | |
11000 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
11001 | } | |
f30432d7 MS |
11002 | } |
11003 | ||
efe38fab JM |
11004 | if (declarator == NULL_TREE |
11005 | || TREE_CODE (declarator) == IDENTIFIER_NODE | |
11006 | || (TREE_CODE (declarator) == TEMPLATE_ID_EXPR | |
11007 | && (TREE_CODE (type) == FUNCTION_TYPE | |
11008 | || TREE_CODE (type) == METHOD_TYPE))) | |
11009 | /* OK */; | |
11010 | else if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR) | |
11011 | { | |
11012 | cp_error ("template-id `%D' used as a declarator", declarator); | |
11013 | declarator = dname; | |
11014 | } | |
11015 | else | |
419c6212 | 11016 | /* Unexpected declarator format. */ |
efe38fab JM |
11017 | my_friendly_abort (990210); |
11018 | ||
419c6212 JM |
11019 | /* If this is declaring a typedef name, return a TYPE_DECL. */ |
11020 | ||
fc378698 | 11021 | if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME) |
8d08fdba MS |
11022 | { |
11023 | tree decl; | |
11024 | ||
11025 | /* Note that the grammar rejects storage classes | |
11026 | in typenames, fields or parameters. */ | |
eff71ab0 PB |
11027 | if (current_lang_name == lang_name_java) |
11028 | TYPE_FOR_JAVA (type) = 1; | |
8d08fdba | 11029 | |
d2e5ee5c MS |
11030 | if (decl_context == FIELD) |
11031 | { | |
094fe153 | 11032 | if (declarator == constructor_name (current_class_type)) |
cb9a3ff8 | 11033 | cp_pedwarn ("ISO C++ forbids nested type `%D' with same name as enclosing class", |
d2e5ee5c MS |
11034 | declarator); |
11035 | decl = build_lang_decl (TYPE_DECL, declarator, type); | |
d2e5ee5c MS |
11036 | } |
11037 | else | |
6dfbb909 | 11038 | decl = build_decl (TYPE_DECL, declarator, type); |
d2e5ee5c | 11039 | |
9188c363 MM |
11040 | /* If the user declares "typedef struct {...} foo" then the |
11041 | struct will have an anonymous name. Fill that name in now. | |
11042 | Nothing can refer to it, so nothing needs know about the name | |
11043 | change. */ | |
8d08fdba | 11044 | if (type != error_mark_node |
2bdb0643 | 11045 | && declarator |
8d08fdba MS |
11046 | && TYPE_NAME (type) |
11047 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
1951a1b6 | 11048 | && TYPE_ANONYMOUS_P (type) |
b537d120 | 11049 | && CP_TYPE_QUALS (type) == TYPE_UNQUALIFIED) |
8d08fdba | 11050 | { |
dcd08efc JM |
11051 | tree oldname = TYPE_NAME (type); |
11052 | tree t; | |
11053 | ||
2c73f9f5 | 11054 | /* Replace the anonymous name with the real name everywhere. */ |
8d08fdba | 11055 | lookup_tag_reverse (type, declarator); |
dcd08efc JM |
11056 | for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) |
11057 | if (TYPE_NAME (t) == oldname) | |
11058 | TYPE_NAME (t) = decl; | |
8d08fdba MS |
11059 | |
11060 | if (TYPE_LANG_SPECIFIC (type)) | |
11061 | TYPE_WAS_ANONYMOUS (type) = 1; | |
11062 | ||
33964bf4 MM |
11063 | /* If this is a typedef within a template class, the nested |
11064 | type is a (non-primary) template. The name for the | |
11065 | template needs updating as well. */ | |
11066 | if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type)) | |
68642fb6 | 11067 | DECL_NAME (CLASSTYPE_TI_TEMPLATE (type)) |
33964bf4 MM |
11068 | = TYPE_IDENTIFIER (type); |
11069 | ||
50a6dbd7 JM |
11070 | /* FIXME remangle member functions; member functions of a |
11071 | type with external linkage have external linkage. */ | |
fc378698 | 11072 | } |
fc378698 | 11073 | |
8d08fdba MS |
11074 | if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE) |
11075 | { | |
8251199e | 11076 | cp_error_at ("typedef name may not be class-qualified", decl); |
a3203465 | 11077 | return NULL_TREE; |
8d08fdba MS |
11078 | } |
11079 | else if (quals) | |
11080 | { | |
11081 | if (ctype == NULL_TREE) | |
11082 | { | |
11083 | if (TREE_CODE (type) != METHOD_TYPE) | |
cb9a3ff8 | 11084 | cp_error_at ("invalid type qualifier for non-member function type", decl); |
8d08fdba MS |
11085 | else |
11086 | ctype = TYPE_METHOD_BASETYPE (type); | |
11087 | } | |
11088 | if (ctype != NULL_TREE) | |
11089 | grok_method_quals (ctype, decl, quals); | |
11090 | } | |
11091 | ||
11092 | if (RIDBIT_SETP (RID_SIGNED, specbits) | |
11093 | || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))) | |
11094 | C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1; | |
11095 | ||
c91a56d2 MS |
11096 | bad_specifiers (decl, "type", virtualp, quals != NULL_TREE, |
11097 | inlinep, friendp, raises != NULL_TREE); | |
11098 | ||
11099 | if (initialized) | |
8251199e | 11100 | error ("typedef declaration includes an initializer"); |
c91a56d2 | 11101 | |
8d08fdba MS |
11102 | return decl; |
11103 | } | |
11104 | ||
11105 | /* Detect the case of an array type of unspecified size | |
11106 | which came, as such, direct from a typedef name. | |
11107 | We must copy the type, so that each identifier gets | |
11108 | a distinct type, so that each identifier's size can be | |
11109 | controlled separately by its own initializer. */ | |
11110 | ||
11111 | if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE | |
11112 | && TYPE_DOMAIN (type) == NULL_TREE) | |
11113 | { | |
11114 | type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type)); | |
11115 | } | |
11116 | ||
11117 | /* If this is a type name (such as, in a cast or sizeof), | |
11118 | compute the type and return it now. */ | |
11119 | ||
11120 | if (decl_context == TYPENAME) | |
11121 | { | |
11122 | /* Note that the grammar rejects storage classes | |
11123 | in typenames, fields or parameters. */ | |
91063b51 | 11124 | if (type_quals != TYPE_UNQUALIFIED) |
6eabb241 | 11125 | type_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
11126 | |
11127 | /* Special case: "friend class foo" looks like a TYPENAME context. */ | |
11128 | if (friendp) | |
11129 | { | |
91063b51 | 11130 | if (type_quals != TYPE_UNQUALIFIED) |
b7484fbe | 11131 | { |
91063b51 MM |
11132 | cp_error ("type qualifiers specified for friend class declaration"); |
11133 | type_quals = TYPE_UNQUALIFIED; | |
b7484fbe MS |
11134 | } |
11135 | if (inlinep) | |
11136 | { | |
8251199e | 11137 | cp_error ("`inline' specified for friend class declaration"); |
b7484fbe MS |
11138 | inlinep = 0; |
11139 | } | |
f2ae0c45 JM |
11140 | |
11141 | /* Until core issue 180 is resolved, allow 'friend typename A::B'. | |
c00996a3 | 11142 | But don't allow implicit typenames except with a class-key. */ |
f2ae0c45 JM |
11143 | if (!current_aggr && (TREE_CODE (type) != TYPENAME_TYPE |
11144 | || IMPLICIT_TYPENAME_P (type))) | |
4b054b80 NS |
11145 | { |
11146 | if (TREE_CODE (type) == TEMPLATE_TYPE_PARM) | |
f2ae0c45 JM |
11147 | cp_pedwarn ("template parameters cannot be friends"); |
11148 | else if (TREE_CODE (type) == TYPENAME_TYPE) | |
11149 | cp_pedwarn ("\ | |
11150 | friend declaration requires class-key, i.e. `friend class %T::%T'", | |
11151 | constructor_name (current_class_type), | |
11152 | TYPE_IDENTIFIER (type)); | |
4b054b80 | 11153 | else |
f2ae0c45 JM |
11154 | cp_pedwarn ("\ |
11155 | friend declaration requires class-key, i.e. `friend %#T'", | |
11156 | type); | |
4b054b80 | 11157 | } |
b7484fbe MS |
11158 | |
11159 | /* Only try to do this stuff if we didn't already give up. */ | |
11160 | if (type != integer_type_node) | |
11161 | { | |
788bf0e3 NS |
11162 | /* DR 209. The friendly class does not need to be accessible |
11163 | in the scope of the class granting friendship. */ | |
11164 | skip_type_access_control (); | |
d363e7bf | 11165 | |
b7484fbe MS |
11166 | /* A friendly class? */ |
11167 | if (current_class_type) | |
11168 | make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type)); | |
11169 | else | |
2ae7bada NS |
11170 | cp_error ("trying to make class `%T' a friend of global scope", |
11171 | type); | |
d363e7bf | 11172 | |
b7484fbe MS |
11173 | type = void_type_node; |
11174 | } | |
8d08fdba MS |
11175 | } |
11176 | else if (quals) | |
11177 | { | |
8d08fdba MS |
11178 | if (ctype == NULL_TREE) |
11179 | { | |
41cbc04c NS |
11180 | if (TREE_CODE (type) != METHOD_TYPE) |
11181 | cp_error ("invalid qualifiers on non-member function type"); | |
11182 | else | |
11183 | ctype = TYPE_METHOD_BASETYPE (type); | |
11184 | } | |
11185 | if (ctype) | |
11186 | { | |
11187 | tree dummy = build_decl (TYPE_DECL, declarator, type); | |
11188 | grok_method_quals (ctype, dummy, quals); | |
11189 | type = TREE_TYPE (dummy); | |
8d08fdba | 11190 | } |
8d08fdba MS |
11191 | } |
11192 | ||
11193 | return type; | |
11194 | } | |
11195 | else if (declarator == NULL_TREE && decl_context != PARM | |
db5ae43f | 11196 | && decl_context != CATCHPARM |
8d08fdba MS |
11197 | && TREE_CODE (type) != UNION_TYPE |
11198 | && ! bitfield) | |
11199 | { | |
8251199e | 11200 | cp_error ("abstract declarator `%T' used as declaration", type); |
8d08fdba MS |
11201 | declarator = make_anon_name (); |
11202 | } | |
11203 | ||
11204 | /* `void' at top level (not within pointer) | |
11205 | is allowed only in typedefs or type names. | |
11206 | We don't complain about parms either, but that is because | |
11207 | a better error message can be made later. */ | |
11208 | ||
a1774733 | 11209 | if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM) |
8d08fdba | 11210 | { |
b7484fbe | 11211 | if (! declarator) |
8251199e | 11212 | error ("unnamed variable or field declared void"); |
b7484fbe | 11213 | else if (TREE_CODE (declarator) == IDENTIFIER_NODE) |
8d08fdba MS |
11214 | { |
11215 | if (IDENTIFIER_OPNAME_P (declarator)) | |
8d08fdba | 11216 | my_friendly_abort (356); |
8d08fdba | 11217 | else |
8251199e | 11218 | error ("variable or field `%s' declared void", name); |
8d08fdba MS |
11219 | } |
11220 | else | |
8251199e | 11221 | error ("variable or field declared void"); |
8d08fdba MS |
11222 | type = integer_type_node; |
11223 | } | |
11224 | ||
11225 | /* Now create the decl, which may be a VAR_DECL, a PARM_DECL | |
11226 | or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */ | |
11227 | ||
14ae7e7d JM |
11228 | if (decl_context == PARM || decl_context == CATCHPARM) |
11229 | { | |
11230 | if (ctype || in_namespace) | |
11231 | error ("cannot use `::' in parameter declaration"); | |
11232 | ||
11233 | /* A parameter declared as an array of T is really a pointer to T. | |
11234 | One declared as a function is really a pointer to a function. | |
11235 | One declared as a member is really a pointer to member. */ | |
11236 | ||
11237 | if (TREE_CODE (type) == ARRAY_TYPE) | |
11238 | { | |
11239 | /* Transfer const-ness of array into that of type pointed to. */ | |
11240 | type = build_pointer_type (TREE_TYPE (type)); | |
91063b51 | 11241 | type_quals = TYPE_UNQUALIFIED; |
14ae7e7d JM |
11242 | } |
11243 | else if (TREE_CODE (type) == FUNCTION_TYPE) | |
11244 | type = build_pointer_type (type); | |
11245 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
11246 | type = build_pointer_type (type); | |
14ae7e7d | 11247 | } |
68642fb6 | 11248 | |
8d08fdba MS |
11249 | { |
11250 | register tree decl; | |
11251 | ||
11252 | if (decl_context == PARM) | |
11253 | { | |
ff350acd | 11254 | decl = build_decl (PARM_DECL, declarator, type); |
8d08fdba MS |
11255 | |
11256 | bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE, | |
11257 | inlinep, friendp, raises != NULL_TREE); | |
8d08fdba MS |
11258 | |
11259 | /* Compute the type actually passed in the parmlist, | |
11260 | for the case where there is no prototype. | |
11261 | (For example, shorts and chars are passed as ints.) | |
11262 | When there is a prototype, this is overridden later. */ | |
11263 | ||
39211cd5 | 11264 | DECL_ARG_TYPE (decl) = type_promotes_to (type); |
8d08fdba MS |
11265 | } |
11266 | else if (decl_context == FIELD) | |
11267 | { | |
11268 | if (type == error_mark_node) | |
11269 | { | |
11270 | /* Happens when declaring arrays of sizes which | |
11271 | are error_mark_node, for example. */ | |
11272 | decl = NULL_TREE; | |
11273 | } | |
997a088c | 11274 | else if (in_namespace && !friendp) |
05008fb9 MM |
11275 | { |
11276 | /* Something like struct S { int N::j; }; */ | |
8251199e | 11277 | cp_error ("invalid use of `::'"); |
05008fb9 MM |
11278 | decl = NULL_TREE; |
11279 | } | |
8d08fdba MS |
11280 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
11281 | { | |
11282 | int publicp = 0; | |
e1467ff2 | 11283 | tree function_context; |
8d08fdba | 11284 | |
72b7eeff MS |
11285 | /* We catch the others as conflicts with the builtin |
11286 | typedefs. */ | |
11287 | if (friendp && declarator == ridpointers[(int) RID_SIGNED]) | |
11288 | { | |
8251199e | 11289 | cp_error ("function `%D' cannot be declared friend", |
72b7eeff MS |
11290 | declarator); |
11291 | friendp = 0; | |
11292 | } | |
11293 | ||
8d08fdba MS |
11294 | if (friendp == 0) |
11295 | { | |
11296 | if (ctype == NULL_TREE) | |
11297 | ctype = current_class_type; | |
11298 | ||
11299 | if (ctype == NULL_TREE) | |
11300 | { | |
8251199e | 11301 | cp_error ("can't make `%D' into a method -- not in a class", |
8d08fdba MS |
11302 | declarator); |
11303 | return void_type_node; | |
11304 | } | |
11305 | ||
11306 | /* ``A union may [ ... ] not [ have ] virtual functions.'' | |
11307 | ARM 9.5 */ | |
11308 | if (virtualp && TREE_CODE (ctype) == UNION_TYPE) | |
11309 | { | |
8251199e | 11310 | cp_error ("function `%D' declared virtual inside a union", |
8d08fdba MS |
11311 | declarator); |
11312 | return void_type_node; | |
11313 | } | |
11314 | ||
596ea4e5 AS |
11315 | if (declarator == ansi_opname (NEW_EXPR) |
11316 | || declarator == ansi_opname (VEC_NEW_EXPR) | |
11317 | || declarator == ansi_opname (DELETE_EXPR) | |
11318 | || declarator == ansi_opname (VEC_DELETE_EXPR)) | |
8d08fdba MS |
11319 | { |
11320 | if (virtualp) | |
11321 | { | |
8251199e | 11322 | cp_error ("`%D' cannot be declared virtual, since it is always static", |
8d08fdba MS |
11323 | declarator); |
11324 | virtualp = 0; | |
11325 | } | |
11326 | } | |
11327 | else if (staticp < 2) | |
14ae7e7d JM |
11328 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
11329 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
11330 | } |
11331 | ||
11332 | /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */ | |
68642fb6 | 11333 | function_context = (ctype != NULL_TREE) ? |
4f1c5b7d | 11334 | decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE; |
e1467ff2 MM |
11335 | publicp = (! friendp || ! staticp) |
11336 | && function_context == NULL_TREE; | |
68642fb6 | 11337 | decl = grokfndecl (ctype, type, |
386b8a85 JM |
11338 | TREE_CODE (declarator) != TEMPLATE_ID_EXPR |
11339 | ? declarator : dname, | |
11340 | declarator, | |
7a8f9fa9 | 11341 | virtualp, flags, quals, raises, |
386b8a85 | 11342 | friendp ? -1 : 0, friendp, publicp, inlinep, |
2c73f9f5 | 11343 | funcdef_flag, template_count, in_namespace); |
20496fa2 | 11344 | if (decl == NULL_TREE) |
3ddfb0e6 | 11345 | return decl; |
6125f3be DE |
11346 | #if 0 |
11347 | /* This clobbers the attrs stored in `decl' from `attrlist'. */ | |
11348 | /* The decl and setting of decl_machine_attr is also turned off. */ | |
71851aaa | 11349 | decl = build_decl_attribute_variant (decl, decl_machine_attr); |
6125f3be | 11350 | #endif |
f0e01782 | 11351 | |
cc804e51 MM |
11352 | /* [class.conv.ctor] |
11353 | ||
11354 | A constructor declared without the function-specifier | |
11355 | explicit that can be called with a single parameter | |
11356 | specifies a conversion from the type of its first | |
11357 | parameter to the type of its class. Such a constructor | |
11358 | is called a converting constructor. */ | |
db5ae43f MS |
11359 | if (explicitp == 2) |
11360 | DECL_NONCONVERTING_P (decl) = 1; | |
cc804e51 MM |
11361 | else if (DECL_CONSTRUCTOR_P (decl)) |
11362 | { | |
11363 | /* The constructor can be called with exactly one | |
11364 | parameter if there is at least one parameter, and | |
11365 | any subsequent parameters have default arguments. | |
e0fff4b3 JM |
11366 | Ignore any compiler-added parms. */ |
11367 | tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (decl); | |
cc804e51 MM |
11368 | |
11369 | if (arg_types == void_list_node | |
68642fb6 UD |
11370 | || (arg_types |
11371 | && TREE_CHAIN (arg_types) | |
cc804e51 MM |
11372 | && TREE_CHAIN (arg_types) != void_list_node |
11373 | && !TREE_PURPOSE (TREE_CHAIN (arg_types)))) | |
11374 | DECL_NONCONVERTING_P (decl) = 1; | |
11375 | } | |
8d08fdba MS |
11376 | } |
11377 | else if (TREE_CODE (type) == METHOD_TYPE) | |
11378 | { | |
faae18ab MS |
11379 | /* We only get here for friend declarations of |
11380 | members of other classes. */ | |
8d08fdba MS |
11381 | /* All method decls are public, so tell grokfndecl to set |
11382 | TREE_PUBLIC, also. */ | |
386b8a85 | 11383 | decl = grokfndecl (ctype, type, declarator, declarator, |
7a8f9fa9 | 11384 | virtualp, flags, quals, raises, |
386b8a85 | 11385 | friendp ? -1 : 0, friendp, 1, 0, funcdef_flag, |
2c73f9f5 | 11386 | template_count, in_namespace); |
f0e01782 MS |
11387 | if (decl == NULL_TREE) |
11388 | return NULL_TREE; | |
8d08fdba | 11389 | } |
5566b478 | 11390 | else if (!staticp && ! processing_template_decl |
d0f062fb | 11391 | && !COMPLETE_TYPE_P (complete_type (type)) |
8d08fdba MS |
11392 | && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0)) |
11393 | { | |
b7484fbe | 11394 | if (declarator) |
8251199e | 11395 | cp_error ("field `%D' has incomplete type", declarator); |
b7484fbe | 11396 | else |
8251199e | 11397 | cp_error ("name `%T' has incomplete type", type); |
8d08fdba MS |
11398 | |
11399 | /* If we're instantiating a template, tell them which | |
11400 | instantiation made the field's type be incomplete. */ | |
11401 | if (current_class_type | |
11402 | && TYPE_NAME (current_class_type) | |
d2e5ee5c | 11403 | && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type)) |
8d08fdba MS |
11404 | && declspecs && TREE_VALUE (declspecs) |
11405 | && TREE_TYPE (TREE_VALUE (declspecs)) == type) | |
8251199e | 11406 | cp_error (" in instantiation of template `%T'", |
db5ae43f MS |
11407 | current_class_type); |
11408 | ||
8d08fdba MS |
11409 | type = error_mark_node; |
11410 | decl = NULL_TREE; | |
11411 | } | |
11412 | else | |
11413 | { | |
11414 | if (friendp) | |
11415 | { | |
cb9a3ff8 | 11416 | error ("`%s' is neither function nor member function; cannot be declared friend", |
8d08fdba MS |
11417 | IDENTIFIER_POINTER (declarator)); |
11418 | friendp = 0; | |
11419 | } | |
11420 | decl = NULL_TREE; | |
11421 | } | |
11422 | ||
11423 | if (friendp) | |
11424 | { | |
11425 | /* Friends are treated specially. */ | |
788bf0e3 NS |
11426 | tree t = NULL_TREE; |
11427 | ||
11428 | /* DR 209. The friend does not need to be accessible at this | |
11429 | point. */ | |
11430 | skip_type_access_control (); | |
11431 | ||
8d08fdba | 11432 | if (ctype == current_class_type) |
8251199e | 11433 | warning ("member functions are implicitly friends of their class"); |
6c30752f | 11434 | |
788bf0e3 NS |
11435 | if (decl && DECL_NAME (decl)) |
11436 | { | |
11437 | if (template_class_depth (current_class_type) == 0) | |
11438 | { | |
11439 | decl = check_explicit_specialization | |
11440 | (declarator, decl, | |
11441 | template_count, 2 * (funcdef_flag != 0) + 4); | |
11442 | if (decl == error_mark_node) | |
11443 | return error_mark_node; | |
11444 | } | |
11445 | ||
11446 | t = do_friend (ctype, declarator, decl, | |
11447 | last_function_parms, attrlist, flags, quals, | |
11448 | funcdef_flag); | |
11449 | } | |
11450 | if (t && funcdef_flag) | |
11451 | return t; | |
11452 | return void_type_node; | |
8d08fdba MS |
11453 | } |
11454 | ||
11455 | /* Structure field. It may not be a function, except for C++ */ | |
11456 | ||
11457 | if (decl == NULL_TREE) | |
11458 | { | |
8d08fdba MS |
11459 | if (initialized) |
11460 | { | |
3ac3d9ea MM |
11461 | if (!staticp) |
11462 | { | |
11463 | /* An attempt is being made to initialize a non-static | |
11464 | member. But, from [class.mem]: | |
68642fb6 | 11465 | |
3ac3d9ea MM |
11466 | 4 A member-declarator can contain a |
11467 | constant-initializer only if it declares a static | |
11468 | member (_class.static_) of integral or enumeration | |
68642fb6 | 11469 | type, see _class.static.data_. |
3ac3d9ea MM |
11470 | |
11471 | This used to be relatively common practice, but | |
11472 | the rest of the compiler does not correctly | |
11473 | handle the initialization unless the member is | |
11474 | static so we make it static below. */ | |
cab1f180 | 11475 | cp_pedwarn ("ISO C++ forbids initialization of member `%D'", |
3ac3d9ea | 11476 | declarator); |
8251199e | 11477 | cp_pedwarn ("making `%D' static", declarator); |
3ac3d9ea MM |
11478 | staticp = 1; |
11479 | } | |
11480 | ||
6ba89f8e MM |
11481 | if (uses_template_parms (type)) |
11482 | /* We'll check at instantiation time. */ | |
11483 | ; | |
11484 | else if (check_static_variable_definition (declarator, | |
11485 | type)) | |
11486 | /* If we just return the declaration, crashes | |
11487 | will sometimes occur. We therefore return | |
72a93143 JM |
11488 | void_type_node, as if this was a friend |
11489 | declaration, to cause callers to completely | |
11490 | ignore this declaration. */ | |
6ba89f8e | 11491 | return void_type_node; |
8d08fdba MS |
11492 | } |
11493 | ||
8ebeee52 | 11494 | /* 9.2p13 [class.mem] */ |
4d7614e9 | 11495 | if (declarator == constructor_name (current_class_type) |
e54930f9 JM |
11496 | /* The standard does not allow non-static data members |
11497 | here either, but we agreed at the 10/99 meeting | |
11498 | to change that in TC 1 so that they are allowed in | |
11499 | classes with no user-defined constructors. */ | |
11500 | && staticp) | |
11501 | cp_pedwarn ("ISO C++ forbids static data member `%D' with same name as enclosing class", | |
8ebeee52 JM |
11502 | declarator); |
11503 | ||
3ac3d9ea | 11504 | if (staticp) |
8d08fdba | 11505 | { |
f18a14bc MM |
11506 | /* C++ allows static class members. All other work |
11507 | for this is done by grokfield. */ | |
4ce3d537 | 11508 | decl = build_lang_decl (VAR_DECL, declarator, type); |
5b605f68 MS |
11509 | TREE_STATIC (decl) = 1; |
11510 | /* In class context, 'static' means public access. */ | |
3ac3d9ea | 11511 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1; |
8d08fdba MS |
11512 | } |
11513 | else | |
11514 | { | |
721c3b42 | 11515 | decl = build_decl (FIELD_DECL, declarator, type); |
2bf105ab | 11516 | DECL_NONADDRESSABLE_P (decl) = bitfield; |
8d08fdba MS |
11517 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) |
11518 | { | |
11519 | DECL_MUTABLE_P (decl) = 1; | |
11520 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
11521 | } | |
11522 | } | |
11523 | ||
11524 | bad_specifiers (decl, "field", virtualp, quals != NULL_TREE, | |
11525 | inlinep, friendp, raises != NULL_TREE); | |
11526 | } | |
11527 | } | |
11528 | else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
11529 | { | |
386b8a85 | 11530 | tree original_name; |
8d08fdba MS |
11531 | int publicp = 0; |
11532 | ||
11533 | if (! declarator) | |
11534 | return NULL_TREE; | |
11535 | ||
386b8a85 JM |
11536 | if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR) |
11537 | original_name = dname; | |
11538 | else | |
11539 | original_name = declarator; | |
11540 | ||
8926095f | 11541 | if (RIDBIT_SETP (RID_AUTO, specbits)) |
8251199e | 11542 | error ("storage class `auto' invalid for function `%s'", name); |
8926095f | 11543 | else if (RIDBIT_SETP (RID_REGISTER, specbits)) |
8251199e | 11544 | error ("storage class `register' invalid for function `%s'", name); |
8d08fdba MS |
11545 | |
11546 | /* Function declaration not at top level. | |
11547 | Storage classes other than `extern' are not allowed | |
11548 | and `extern' makes no difference. */ | |
a9aedbc2 | 11549 | if (! toplevel_bindings_p () |
8926095f MS |
11550 | && (RIDBIT_SETP (RID_STATIC, specbits) |
11551 | || RIDBIT_SETP (RID_INLINE, specbits)) | |
8d08fdba | 11552 | && pedantic) |
8926095f MS |
11553 | { |
11554 | if (RIDBIT_SETP (RID_STATIC, specbits)) | |
8251199e | 11555 | pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name); |
8926095f | 11556 | else |
8251199e | 11557 | pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name); |
8926095f | 11558 | } |
68642fb6 | 11559 | |
8d08fdba MS |
11560 | if (ctype == NULL_TREE) |
11561 | { | |
11562 | if (virtualp) | |
11563 | { | |
8251199e | 11564 | error ("virtual non-class function `%s'", name); |
8d08fdba MS |
11565 | virtualp = 0; |
11566 | } | |
8d08fdba MS |
11567 | } |
11568 | else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2) | |
14ae7e7d JM |
11569 | type = build_cplus_method_type (ctype, TREE_TYPE (type), |
11570 | TYPE_ARG_TYPES (type)); | |
8d08fdba | 11571 | |
eb66be0e | 11572 | /* Record presence of `static'. */ |
faae18ab | 11573 | publicp = (ctype != NULL_TREE |
a9aedbc2 | 11574 | || RIDBIT_SETP (RID_EXTERN, specbits) |
eb66be0e | 11575 | || !RIDBIT_SETP (RID_STATIC, specbits)); |
8d08fdba | 11576 | |
386b8a85 | 11577 | decl = grokfndecl (ctype, type, original_name, declarator, |
7a8f9fa9 | 11578 | virtualp, flags, quals, raises, |
75650646 | 11579 | 1, friendp, |
68642fb6 | 11580 | publicp, inlinep, funcdef_flag, |
2c73f9f5 | 11581 | template_count, in_namespace); |
f0e01782 MS |
11582 | if (decl == NULL_TREE) |
11583 | return NULL_TREE; | |
8d08fdba | 11584 | |
8d08fdba MS |
11585 | if (staticp == 1) |
11586 | { | |
11587 | int illegal_static = 0; | |
11588 | ||
11589 | /* Don't allow a static member function in a class, and forbid | |
11590 | declaring main to be static. */ | |
11591 | if (TREE_CODE (type) == METHOD_TYPE) | |
11592 | { | |
8251199e | 11593 | cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl); |
8d08fdba MS |
11594 | illegal_static = 1; |
11595 | } | |
8d08fdba MS |
11596 | else if (current_function_decl) |
11597 | { | |
11598 | /* FIXME need arm citation */ | |
8251199e | 11599 | error ("cannot declare static function inside another function"); |
8d08fdba MS |
11600 | illegal_static = 1; |
11601 | } | |
11602 | ||
11603 | if (illegal_static) | |
11604 | { | |
11605 | staticp = 0; | |
11606 | RIDBIT_RESET (RID_STATIC, specbits); | |
11607 | } | |
11608 | } | |
8d08fdba MS |
11609 | } |
11610 | else | |
11611 | { | |
11612 | /* It's a variable. */ | |
11613 | ||
11614 | /* An uninitialized decl with `extern' is a reference. */ | |
68642fb6 UD |
11615 | decl = grokvardecl (type, declarator, &specbits, |
11616 | initialized, | |
11617 | (type_quals & TYPE_QUAL_CONST) != 0, | |
950ad3c3 | 11618 | in_namespace); |
8d08fdba MS |
11619 | bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE, |
11620 | inlinep, friendp, raises != NULL_TREE); | |
11621 | ||
11622 | if (ctype) | |
11623 | { | |
f0e01782 | 11624 | DECL_CONTEXT (decl) = ctype; |
8d08fdba MS |
11625 | if (staticp == 1) |
11626 | { | |
8251199e | 11627 | cp_pedwarn ("static member `%D' re-declared as static", decl); |
8d08fdba MS |
11628 | staticp = 0; |
11629 | RIDBIT_RESET (RID_STATIC, specbits); | |
11630 | } | |
b7484fbe MS |
11631 | if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl)) |
11632 | { | |
8251199e | 11633 | cp_error ("static member `%D' declared `register'", decl); |
b7484fbe MS |
11634 | RIDBIT_RESET (RID_REGISTER, specbits); |
11635 | } | |
f30432d7 | 11636 | if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic) |
8d08fdba | 11637 | { |
8251199e | 11638 | cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage", |
f30432d7 | 11639 | decl); |
8d08fdba MS |
11640 | RIDBIT_RESET (RID_EXTERN, specbits); |
11641 | } | |
11642 | } | |
11643 | } | |
11644 | ||
34fc957d | 11645 | my_friendly_assert (!RIDBIT_SETP (RID_MUTABLE, specbits), 19990927); |
8d08fdba MS |
11646 | |
11647 | /* Record `register' declaration for warnings on & | |
11648 | and in case doing stupid register allocation. */ | |
11649 | ||
11650 | if (RIDBIT_SETP (RID_REGISTER, specbits)) | |
11651 | DECL_REGISTER (decl) = 1; | |
11652 | ||
8926095f MS |
11653 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
11654 | DECL_THIS_EXTERN (decl) = 1; | |
11655 | ||
faae18ab MS |
11656 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
11657 | DECL_THIS_STATIC (decl) = 1; | |
11658 | ||
adecb3f4 MM |
11659 | /* Record constancy and volatility. There's no need to do this |
11660 | when processing a template; we'll do this for the instantiated | |
11661 | declaration based on the type of DECL. */ | |
11662 | if (!processing_template_decl) | |
11663 | c_apply_type_quals_to_decl (type_quals, decl); | |
8d08fdba MS |
11664 | |
11665 | return decl; | |
11666 | } | |
11667 | } | |
11668 | \f | |
11669 | /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist. | |
11670 | An empty exprlist is a parmlist. An exprlist which | |
11671 | contains only identifiers at the global level | |
11672 | is a parmlist. Otherwise, it is an exprlist. */ | |
e92cc029 | 11673 | |
8d08fdba MS |
11674 | int |
11675 | parmlist_is_exprlist (exprs) | |
11676 | tree exprs; | |
11677 | { | |
11678 | if (exprs == NULL_TREE || TREE_PARMLIST (exprs)) | |
11679 | return 0; | |
11680 | ||
a9aedbc2 | 11681 | if (toplevel_bindings_p ()) |
8d08fdba MS |
11682 | { |
11683 | /* At the global level, if these are all identifiers, | |
11684 | then it is a parmlist. */ | |
11685 | while (exprs) | |
11686 | { | |
11687 | if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE) | |
11688 | return 1; | |
11689 | exprs = TREE_CHAIN (exprs); | |
11690 | } | |
11691 | return 0; | |
11692 | } | |
11693 | return 1; | |
11694 | } | |
11695 | ||
f181d4ae MM |
11696 | /* Subroutine of start_function. Ensure that each of the parameter |
11697 | types (as listed in PARMS) is complete, as is required for a | |
11698 | function definition. */ | |
e92cc029 | 11699 | |
8d08fdba MS |
11700 | static void |
11701 | require_complete_types_for_parms (parms) | |
11702 | tree parms; | |
11703 | { | |
07c88314 | 11704 | for (; parms; parms = TREE_CHAIN (parms)) |
8d08fdba | 11705 | { |
5cce22b6 NS |
11706 | if (VOID_TYPE_P (TREE_TYPE (parms))) |
11707 | /* grokparms will have already issued an error */ | |
11708 | TREE_TYPE (parms) = error_mark_node; | |
11709 | else if (complete_type_or_else (TREE_TYPE (parms), parms)) | |
42f989ff | 11710 | layout_decl (parms, 0); |
5cce22b6 NS |
11711 | else |
11712 | TREE_TYPE (parms) = error_mark_node; | |
8d08fdba MS |
11713 | } |
11714 | } | |
11715 | ||
46e8c075 | 11716 | /* Returns non-zero if T is a local variable. */ |
297e73d8 | 11717 | |
46e8c075 MM |
11718 | int |
11719 | local_variable_p (t) | |
11720 | tree t; | |
297e73d8 | 11721 | { |
68642fb6 | 11722 | if ((TREE_CODE (t) == VAR_DECL |
297e73d8 MM |
11723 | /* A VAR_DECL with a context that is a _TYPE is a static data |
11724 | member. */ | |
11725 | && !TYPE_P (CP_DECL_CONTEXT (t)) | |
11726 | /* Any other non-local variable must be at namespace scope. */ | |
46e8c075 | 11727 | && !DECL_NAMESPACE_SCOPE_P (t)) |
297e73d8 | 11728 | || (TREE_CODE (t) == PARM_DECL)) |
46e8c075 | 11729 | return 1; |
297e73d8 | 11730 | |
46e8c075 MM |
11731 | return 0; |
11732 | } | |
11733 | ||
11734 | /* Returns non-zero if T is an automatic local variable or a label. | |
11735 | (These are the declarations that need to be remapped when the code | |
11736 | containing them is duplicated.) */ | |
11737 | ||
11738 | int | |
11739 | nonstatic_local_decl_p (t) | |
11740 | tree t; | |
11741 | { | |
11742 | return ((local_variable_p (t) && !TREE_STATIC (t)) | |
11743 | || TREE_CODE (t) == LABEL_DECL | |
11744 | || TREE_CODE (t) == RESULT_DECL); | |
11745 | } | |
11746 | ||
11747 | /* Like local_variable_p, but suitable for use as a tree-walking | |
11748 | function. */ | |
11749 | ||
11750 | static tree | |
11751 | local_variable_p_walkfn (tp, walk_subtrees, data) | |
11752 | tree *tp; | |
11753 | int *walk_subtrees ATTRIBUTE_UNUSED; | |
11754 | void *data ATTRIBUTE_UNUSED; | |
11755 | { | |
68642fb6 | 11756 | return ((local_variable_p (*tp) && !DECL_ARTIFICIAL (*tp)) |
46e8c075 | 11757 | ? *tp : NULL_TREE); |
297e73d8 MM |
11758 | } |
11759 | ||
11760 | /* Check that ARG, which is a default-argument expression for a | |
11761 | parameter DECL, is legal. Returns ARG, or ERROR_MARK_NODE, if | |
11762 | something goes wrong. DECL may also be a _TYPE node, rather than a | |
11763 | DECL, if there is no DECL available. */ | |
11764 | ||
11765 | tree | |
11766 | check_default_argument (decl, arg) | |
11767 | tree decl; | |
11768 | tree arg; | |
11769 | { | |
11770 | tree var; | |
11771 | tree decl_type; | |
11772 | ||
11773 | if (TREE_CODE (arg) == DEFAULT_ARG) | |
11774 | /* We get a DEFAULT_ARG when looking at an in-class declaration | |
11775 | with a default argument. Ignore the argument for now; we'll | |
11776 | deal with it after the class is complete. */ | |
11777 | return arg; | |
11778 | ||
11779 | if (processing_template_decl || uses_template_parms (arg)) | |
11780 | /* We don't do anything checking until instantiation-time. Note | |
11781 | that there may be uninstantiated arguments even for an | |
11782 | instantiated function, since default arguments are not | |
11783 | instantiated until they are needed. */ | |
11784 | return arg; | |
11785 | ||
11786 | if (TYPE_P (decl)) | |
11787 | { | |
11788 | decl_type = decl; | |
11789 | decl = NULL_TREE; | |
11790 | } | |
11791 | else | |
11792 | decl_type = TREE_TYPE (decl); | |
11793 | ||
68642fb6 | 11794 | if (arg == error_mark_node |
297e73d8 MM |
11795 | || decl == error_mark_node |
11796 | || TREE_TYPE (arg) == error_mark_node | |
11797 | || decl_type == error_mark_node) | |
11798 | /* Something already went wrong. There's no need to check | |
11799 | further. */ | |
11800 | return error_mark_node; | |
11801 | ||
11802 | /* [dcl.fct.default] | |
68642fb6 | 11803 | |
297e73d8 MM |
11804 | A default argument expression is implicitly converted to the |
11805 | parameter type. */ | |
11806 | if (!TREE_TYPE (arg) | |
11807 | || !can_convert_arg (decl_type, TREE_TYPE (arg), arg)) | |
11808 | { | |
11809 | if (decl) | |
68642fb6 | 11810 | cp_error ("default argument for `%#D' has type `%T'", |
297e73d8 MM |
11811 | decl, TREE_TYPE (arg)); |
11812 | else | |
8614a1d6 | 11813 | cp_error ("default argument for parameter of type `%T' has type `%T'", |
297e73d8 MM |
11814 | decl_type, TREE_TYPE (arg)); |
11815 | ||
11816 | return error_mark_node; | |
11817 | } | |
11818 | ||
11819 | /* [dcl.fct.default] | |
11820 | ||
11821 | Local variables shall not be used in default argument | |
68642fb6 | 11822 | expressions. |
297e73d8 MM |
11823 | |
11824 | The keyword `this' shall not be used in a default argument of a | |
11825 | member function. */ | |
5362b086 | 11826 | var = walk_tree_without_duplicates (&arg, local_variable_p_walkfn, |
ee94fce6 | 11827 | NULL); |
297e73d8 MM |
11828 | if (var) |
11829 | { | |
11830 | cp_error ("default argument `%E' uses local variable `%D'", | |
11831 | arg, var); | |
11832 | return error_mark_node; | |
11833 | } | |
11834 | ||
11835 | /* All is well. */ | |
11836 | return arg; | |
11837 | } | |
11838 | ||
8d08fdba MS |
11839 | /* Decode the list of parameter types for a function type. |
11840 | Given the list of things declared inside the parens, | |
11841 | return a list of types. | |
11842 | ||
5cce22b6 NS |
11843 | We determine whether ellipsis parms are used by PARMLIST_ELLIPSIS_P |
11844 | flag. If unset, we append void_list_node. A parmlist declared | |
11845 | as `(void)' is accepted as the empty parmlist. | |
11846 | ||
11847 | Also set last_function_parms to the chain of PARM_DECLs. */ | |
8d08fdba MS |
11848 | |
11849 | static tree | |
5cce22b6 | 11850 | grokparms (first_parm) |
8d08fdba | 11851 | tree first_parm; |
8d08fdba MS |
11852 | { |
11853 | tree result = NULL_TREE; | |
11854 | tree decls = NULL_TREE; | |
5cce22b6 NS |
11855 | int ellipsis = !first_parm || PARMLIST_ELLIPSIS_P (first_parm); |
11856 | tree parm, chain; | |
11857 | int any_error = 0; | |
8d08fdba | 11858 | |
5cce22b6 NS |
11859 | my_friendly_assert (!first_parm || TREE_PARMLIST (first_parm), 20001115); |
11860 | ||
11861 | for (parm = first_parm; parm != NULL_TREE; parm = chain) | |
8d08fdba | 11862 | { |
0657c69c | 11863 | tree type = NULL_TREE; |
5cce22b6 NS |
11864 | register tree decl = TREE_VALUE (parm); |
11865 | tree init = TREE_PURPOSE (parm); | |
8d08fdba | 11866 | |
5cce22b6 NS |
11867 | chain = TREE_CHAIN (parm); |
11868 | /* @@ weak defense against parse errors. */ | |
11869 | if (TREE_CODE (decl) != VOID_TYPE | |
11870 | && TREE_CODE (decl) != TREE_LIST) | |
8d08fdba | 11871 | { |
5cce22b6 NS |
11872 | /* Give various messages as the need arises. */ |
11873 | if (TREE_CODE (decl) == STRING_CST) | |
11874 | cp_error ("invalid string constant `%E'", decl); | |
11875 | else if (TREE_CODE (decl) == INTEGER_CST) | |
11876 | error ("invalid integer constant in parameter list, did you forget to give parameter name?"); | |
11877 | continue; | |
11878 | } | |
8d08fdba | 11879 | |
5cce22b6 NS |
11880 | if (parm == void_list_node) |
11881 | break; | |
8d08fdba | 11882 | |
5cce22b6 | 11883 | decl = grokdeclarator (TREE_VALUE (decl), TREE_PURPOSE (decl), |
d363e7bf | 11884 | PARM, init != NULL_TREE, NULL_TREE); |
5cce22b6 NS |
11885 | if (! decl || TREE_TYPE (decl) == error_mark_node) |
11886 | continue; | |
d363e7bf | 11887 | |
5cce22b6 NS |
11888 | type = TREE_TYPE (decl); |
11889 | if (VOID_TYPE_P (type)) | |
11890 | { | |
11891 | if (same_type_p (type, void_type_node) | |
11892 | && !DECL_NAME (decl) && !result && !chain && !ellipsis) | |
11893 | /* this is a parmlist of `(void)', which is ok. */ | |
11894 | break; | |
11895 | incomplete_type_error (decl, type); | |
0657c69c MM |
11896 | /* It's not a good idea to actually create parameters of |
11897 | type `void'; other parts of the compiler assume that a | |
11898 | void type terminates the parameter list. */ | |
04f3dc2b | 11899 | type = error_mark_node; |
0657c69c | 11900 | TREE_TYPE (decl) = error_mark_node; |
5cce22b6 | 11901 | } |
8d08fdba | 11902 | |
d363e7bf | 11903 | if (type != error_mark_node) |
04f3dc2b MM |
11904 | { |
11905 | /* Top-level qualifiers on the parameters are | |
11906 | ignored for function types. */ | |
11907 | type = TYPE_MAIN_VARIANT (type); | |
11908 | if (TREE_CODE (type) == METHOD_TYPE) | |
11909 | { | |
11910 | cp_error ("parameter `%D' invalidly declared method type", decl); | |
11911 | type = build_pointer_type (type); | |
11912 | TREE_TYPE (decl) = type; | |
11913 | } | |
11914 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
11915 | { | |
11916 | cp_error ("parameter `%D' invalidly declared offset type", decl); | |
11917 | type = build_pointer_type (type); | |
11918 | TREE_TYPE (decl) = type; | |
11919 | } | |
11920 | else if (abstract_virtuals_error (decl, type)) | |
11921 | any_error = 1; /* Seems like a good idea. */ | |
11922 | else if (POINTER_TYPE_P (type)) | |
11923 | { | |
11924 | /* [dcl.fct]/6, parameter types cannot contain pointers | |
11925 | (references) to arrays of unknown bound. */ | |
98979fe0 NS |
11926 | tree t = TREE_TYPE (type); |
11927 | int ptr = TYPE_PTR_P (type); | |
11928 | ||
11929 | while (1) | |
11930 | { | |
11931 | if (TYPE_PTR_P (t)) | |
11932 | ptr = 1; | |
11933 | else if (TREE_CODE (t) != ARRAY_TYPE) | |
11934 | break; | |
11935 | else if (!TYPE_DOMAIN (t)) | |
11936 | break; | |
11937 | t = TREE_TYPE (t); | |
11938 | } | |
04f3dc2b MM |
11939 | if (TREE_CODE (t) == ARRAY_TYPE) |
11940 | cp_error ("parameter `%D' includes %s to array of unknown bound `%T'", | |
98979fe0 | 11941 | decl, ptr ? "pointer" : "reference", t); |
04f3dc2b MM |
11942 | } |
11943 | ||
11944 | DECL_ARG_TYPE (decl) = TREE_TYPE (decl); | |
11945 | if (PROMOTE_PROTOTYPES | |
11946 | && (TREE_CODE (type) == INTEGER_TYPE | |
11947 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
11948 | && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) | |
11949 | DECL_ARG_TYPE (decl) = integer_type_node; | |
11950 | if (!any_error && init) | |
11951 | init = check_default_argument (decl, init); | |
11952 | else | |
11953 | init = NULL_TREE; | |
11954 | } | |
8d08fdba | 11955 | |
5cce22b6 NS |
11956 | TREE_CHAIN (decl) = decls; |
11957 | decls = decl; | |
0657c69c | 11958 | result = tree_cons (init, type, result); |
8d08fdba | 11959 | } |
5cce22b6 NS |
11960 | decls = nreverse (decls); |
11961 | result = nreverse (result); | |
11962 | if (!ellipsis) | |
11963 | result = chainon (result, void_list_node); | |
8d08fdba MS |
11964 | last_function_parms = decls; |
11965 | ||
8d08fdba MS |
11966 | return result; |
11967 | } | |
42976354 | 11968 | |
8d08fdba | 11969 | \f |
4f1c5b7d MM |
11970 | /* D is a constructor or overloaded `operator='. Returns non-zero if |
11971 | D's arguments allow it to be a copy constructor, or copy assignment | |
11972 | operator. */ | |
11973 | ||
c11b6f21 MS |
11974 | int |
11975 | copy_args_p (d) | |
11976 | tree d; | |
11977 | { | |
4f1c5b7d MM |
11978 | tree t; |
11979 | ||
11980 | if (!DECL_FUNCTION_MEMBER_P (d)) | |
11981 | return 0; | |
11982 | ||
e0fff4b3 | 11983 | t = FUNCTION_FIRST_USER_PARMTYPE (d); |
c11b6f21 MS |
11984 | if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE |
11985 | && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t))) | |
4f1c5b7d | 11986 | == DECL_CONTEXT (d)) |
c11b6f21 MS |
11987 | && (TREE_CHAIN (t) == NULL_TREE |
11988 | || TREE_CHAIN (t) == void_list_node | |
11989 | || TREE_PURPOSE (TREE_CHAIN (t)))) | |
11990 | return 1; | |
11991 | return 0; | |
11992 | } | |
11993 | ||
8d08fdba MS |
11994 | /* These memoizing functions keep track of special properties which |
11995 | a class may have. `grok_ctor_properties' notices whether a class | |
11996 | has a constructor of the form X(X&), and also complains | |
11997 | if the class has a constructor of the form X(X). | |
11998 | `grok_op_properties' takes notice of the various forms of | |
11999 | operator= which are defined, as well as what sorts of type conversion | |
12000 | may apply. Both functions take a FUNCTION_DECL as an argument. */ | |
e92cc029 | 12001 | |
a0a33927 | 12002 | int |
8d08fdba MS |
12003 | grok_ctor_properties (ctype, decl) |
12004 | tree ctype, decl; | |
12005 | { | |
e0fff4b3 | 12006 | tree parmtypes = FUNCTION_FIRST_USER_PARMTYPE (decl); |
8d08fdba MS |
12007 | tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node; |
12008 | ||
f181d4ae MM |
12009 | /* [class.copy] |
12010 | ||
12011 | A non-template constructor for class X is a copy constructor if | |
12012 | its first parameter is of type X&, const X&, volatile X& or const | |
12013 | volatile X&, and either there are no other parameters or else all | |
12014 | other parameters have default arguments. */ | |
8d08fdba | 12015 | if (TREE_CODE (parmtype) == REFERENCE_TYPE |
0b41abe6 | 12016 | && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype |
a11d04b5 | 12017 | && sufficient_parms_p (TREE_CHAIN (parmtypes)) |
f181d4ae MM |
12018 | && !(DECL_TEMPLATE_INSTANTIATION (decl) |
12019 | && is_member_template (DECL_TI_TEMPLATE (decl)))) | |
0b41abe6 JM |
12020 | { |
12021 | TYPE_HAS_INIT_REF (ctype) = 1; | |
91063b51 | 12022 | if (CP_TYPE_CONST_P (TREE_TYPE (parmtype))) |
0b41abe6 | 12023 | TYPE_HAS_CONST_INIT_REF (ctype) = 1; |
8d08fdba | 12024 | } |
f181d4ae MM |
12025 | /* [class.copy] |
12026 | ||
12027 | A declaration of a constructor for a class X is ill-formed if its | |
12028 | first parameter is of type (optionally cv-qualified) X and either | |
12029 | there are no other parameters or else all other parameters have | |
68642fb6 | 12030 | default arguments. |
f181d4ae MM |
12031 | |
12032 | We *don't* complain about member template instantiations that | |
12033 | have this form, though; they can occur as we try to decide what | |
12034 | constructor to use during overload resolution. Since overload | |
12035 | resolution will never prefer such a constructor to the | |
12036 | non-template copy constructor (which is either explicitly or | |
12037 | implicitly defined), there's no need to worry about their | |
12038 | existence. Theoretically, they should never even be | |
12039 | instantiated, but that's hard to forestall. */ | |
0b41abe6 | 12040 | else if (TYPE_MAIN_VARIANT (parmtype) == ctype |
a11d04b5 | 12041 | && sufficient_parms_p (TREE_CHAIN (parmtypes)) |
f181d4ae MM |
12042 | && !(DECL_TEMPLATE_INSTANTIATION (decl) |
12043 | && is_member_template (DECL_TI_TEMPLATE (decl)))) | |
8d08fdba | 12044 | { |
8251199e | 12045 | cp_error ("invalid constructor; you probably meant `%T (const %T&)'", |
0b41abe6 JM |
12046 | ctype, ctype); |
12047 | SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype); | |
12048 | return 0; | |
8d08fdba MS |
12049 | } |
12050 | else if (TREE_CODE (parmtype) == VOID_TYPE | |
12051 | || TREE_PURPOSE (parmtypes) != NULL_TREE) | |
12052 | TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1; | |
a0a33927 MS |
12053 | |
12054 | return 1; | |
8d08fdba MS |
12055 | } |
12056 | ||
596ea4e5 | 12057 | /* An operator with this code is unary, but can also be binary. */ |
e92cc029 | 12058 | |
a28e3c7f | 12059 | static int |
596ea4e5 AS |
12060 | ambi_op_p (code) |
12061 | enum tree_code code; | |
8d08fdba | 12062 | { |
596ea4e5 AS |
12063 | return (code == INDIRECT_REF |
12064 | || code == ADDR_EXPR | |
12065 | || code == CONVERT_EXPR | |
12066 | || code == NEGATE_EXPR | |
12067 | || code == PREINCREMENT_EXPR | |
12068 | || code == PREDECREMENT_EXPR); | |
8d08fdba MS |
12069 | } |
12070 | ||
12071 | /* An operator with this name can only be unary. */ | |
e92cc029 | 12072 | |
a28e3c7f | 12073 | static int |
596ea4e5 AS |
12074 | unary_op_p (code) |
12075 | enum tree_code code; | |
8d08fdba | 12076 | { |
596ea4e5 AS |
12077 | return (code == TRUTH_NOT_EXPR |
12078 | || code == BIT_NOT_EXPR | |
12079 | || code == COMPONENT_REF | |
12080 | || code == TYPE_EXPR); | |
8d08fdba MS |
12081 | } |
12082 | ||
12083 | /* Do a little sanity-checking on how they declared their operator. */ | |
e92cc029 | 12084 | |
5566b478 | 12085 | void |
8d08fdba MS |
12086 | grok_op_properties (decl, virtualp, friendp) |
12087 | tree decl; | |
12088 | int virtualp, friendp; | |
12089 | { | |
12090 | tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
596ea4e5 | 12091 | tree argtype; |
8d08fdba MS |
12092 | int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE); |
12093 | tree name = DECL_NAME (decl); | |
596ea4e5 AS |
12094 | enum tree_code operator_code; |
12095 | int arity; | |
12096 | ||
12097 | /* Count the number of arguments. */ | |
12098 | for (argtype = argtypes, arity = 0; | |
12099 | argtype && argtype != void_list_node; | |
12100 | argtype = TREE_CHAIN (argtype)) | |
12101 | ++arity; | |
8d08fdba | 12102 | |
a28e3c7f MS |
12103 | if (current_class_type == NULL_TREE) |
12104 | friendp = 1; | |
8d08fdba | 12105 | |
596ea4e5 AS |
12106 | if (DECL_CONV_FN_P (decl)) |
12107 | operator_code = TYPE_EXPR; | |
12108 | else | |
12109 | do | |
12110 | { | |
0c918ce5 MM |
12111 | #define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \ |
12112 | if (ansi_opname (CODE) == name) \ | |
12113 | { \ | |
12114 | operator_code = CODE; \ | |
12115 | break; \ | |
12116 | } \ | |
12117 | else if (ansi_assopname (CODE) == name) \ | |
12118 | { \ | |
12119 | operator_code = CODE; \ | |
12120 | DECL_ASSIGNMENT_OPERATOR_P (decl) = 1; \ | |
12121 | break; \ | |
596ea4e5 AS |
12122 | } |
12123 | ||
12124 | #include "operators.def" | |
12125 | #undef DEF_OPERATOR | |
12126 | ||
12127 | my_friendly_abort (20000527); | |
12128 | } | |
12129 | while (0); | |
12130 | my_friendly_assert (operator_code != LAST_CPLUS_TREE_CODE, 20000526); | |
12131 | SET_OVERLOADED_OPERATOR_CODE (decl, operator_code); | |
12132 | ||
a28e3c7f MS |
12133 | if (! friendp) |
12134 | { | |
596ea4e5 AS |
12135 | switch (operator_code) |
12136 | { | |
12137 | case CALL_EXPR: | |
12138 | TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1; | |
12139 | break; | |
5362b086 | 12140 | |
596ea4e5 AS |
12141 | case ARRAY_REF: |
12142 | TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1; | |
12143 | break; | |
f181d4ae | 12144 | |
596ea4e5 AS |
12145 | case COMPONENT_REF: |
12146 | case MEMBER_REF: | |
12147 | TYPE_OVERLOADS_ARROW (current_class_type) = 1; | |
12148 | break; | |
5362b086 | 12149 | |
596ea4e5 AS |
12150 | case NEW_EXPR: |
12151 | TYPE_HAS_NEW_OPERATOR (current_class_type) = 1; | |
12152 | break; | |
5362b086 | 12153 | |
596ea4e5 AS |
12154 | case DELETE_EXPR: |
12155 | TYPE_GETS_DELETE (current_class_type) |= 1; | |
12156 | break; | |
5362b086 | 12157 | |
596ea4e5 AS |
12158 | case VEC_NEW_EXPR: |
12159 | TYPE_HAS_ARRAY_NEW_OPERATOR (current_class_type) = 1; | |
12160 | break; | |
5362b086 | 12161 | |
596ea4e5 AS |
12162 | case VEC_DELETE_EXPR: |
12163 | TYPE_GETS_DELETE (current_class_type) |= 2; | |
12164 | break; | |
12165 | ||
12166 | default: | |
12167 | break; | |
12168 | } | |
12169 | } | |
12170 | ||
12171 | if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR) | |
8d08fdba | 12172 | { |
8d08fdba MS |
12173 | /* When the compiler encounters the definition of A::operator new, it |
12174 | doesn't look at the class declaration to find out if it's static. */ | |
a28e3c7f | 12175 | if (methodp) |
3afb32a4 | 12176 | revert_static_member_fn (decl); |
68642fb6 | 12177 | |
36791f1e | 12178 | TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl)); |
8d08fdba | 12179 | } |
596ea4e5 | 12180 | else if (operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR) |
8d08fdba | 12181 | { |
a28e3c7f | 12182 | if (methodp) |
3afb32a4 | 12183 | revert_static_member_fn (decl); |
68642fb6 | 12184 | |
36791f1e | 12185 | TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl)); |
8d08fdba | 12186 | } |
8d08fdba MS |
12187 | else |
12188 | { | |
12189 | /* An operator function must either be a non-static member function | |
12190 | or have at least one parameter of a class, a reference to a class, | |
12191 | an enumeration, or a reference to an enumeration. 13.4.0.6 */ | |
700f8a87 | 12192 | if (! methodp || DECL_STATIC_FUNCTION_P (decl)) |
8d08fdba | 12193 | { |
596ea4e5 AS |
12194 | if (operator_code == TYPE_EXPR |
12195 | || operator_code == CALL_EXPR | |
12196 | || operator_code == COMPONENT_REF | |
12197 | || operator_code == ARRAY_REF | |
12198 | || operator_code == NOP_EXPR) | |
8251199e | 12199 | cp_error ("`%D' must be a nonstatic member function", decl); |
8d08fdba MS |
12200 | else |
12201 | { | |
12202 | tree p = argtypes; | |
12203 | ||
700f8a87 | 12204 | if (DECL_STATIC_FUNCTION_P (decl)) |
8251199e | 12205 | cp_error ("`%D' must be either a non-static member function or a non-member function", decl); |
700f8a87 | 12206 | |
8d08fdba | 12207 | if (p) |
a1774733 | 12208 | for (; TREE_CODE (TREE_VALUE (p)) != VOID_TYPE ; p = TREE_CHAIN (p)) |
8d08fdba MS |
12209 | { |
12210 | tree arg = TREE_VALUE (p); | |
12211 | if (TREE_CODE (arg) == REFERENCE_TYPE) | |
12212 | arg = TREE_TYPE (arg); | |
12213 | ||
12214 | /* This lets bad template code slip through. */ | |
12215 | if (IS_AGGR_TYPE (arg) | |
12216 | || TREE_CODE (arg) == ENUMERAL_TYPE | |
73b0fce8 | 12217 | || TREE_CODE (arg) == TEMPLATE_TYPE_PARM |
a1281f45 | 12218 | || TREE_CODE (arg) == BOUND_TEMPLATE_TEMPLATE_PARM) |
8d08fdba MS |
12219 | goto foundaggr; |
12220 | } | |
8251199e JM |
12221 | cp_error |
12222 | ("`%D' must have an argument of class or enumerated type", | |
8d08fdba MS |
12223 | decl); |
12224 | foundaggr: | |
12225 | ; | |
12226 | } | |
12227 | } | |
68642fb6 | 12228 | |
596ea4e5 | 12229 | if (operator_code == CALL_EXPR) |
2c73f9f5 | 12230 | return; /* No restrictions on args. */ |
8d08fdba | 12231 | |
9a3b49ac | 12232 | if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl)) |
a0a33927 MS |
12233 | { |
12234 | tree t = TREE_TYPE (name); | |
17708e90 | 12235 | if (! friendp) |
a0a33927 MS |
12236 | { |
12237 | int ref = (TREE_CODE (t) == REFERENCE_TYPE); | |
d8e178a0 | 12238 | const char *what = 0; |
5362b086 | 12239 | |
a0a33927 MS |
12240 | if (ref) |
12241 | t = TYPE_MAIN_VARIANT (TREE_TYPE (t)); | |
12242 | ||
17708e90 NS |
12243 | if (TREE_CODE (t) == VOID_TYPE) |
12244 | what = "void"; | |
12245 | else if (t == current_class_type) | |
a0a33927 | 12246 | what = "the same type"; |
9a3b49ac | 12247 | /* Don't force t to be complete here. */ |
a0a33927 | 12248 | else if (IS_AGGR_TYPE (t) |
d0f062fb | 12249 | && COMPLETE_TYPE_P (t) |
a0a33927 MS |
12250 | && DERIVED_FROM_P (t, current_class_type)) |
12251 | what = "a base class"; | |
12252 | ||
12253 | if (what) | |
8251199e | 12254 | warning ("conversion to %s%s will never use a type conversion operator", |
a0a33927 MS |
12255 | ref ? "a reference to " : "", what); |
12256 | } | |
12257 | } | |
12258 | ||
5362b086 | 12259 | if (DECL_ASSIGNMENT_OPERATOR_P (decl) |
596ea4e5 | 12260 | && operator_code == NOP_EXPR) |
8d08fdba MS |
12261 | { |
12262 | tree parmtype; | |
12263 | ||
596ea4e5 | 12264 | if (arity != 2 && methodp) |
8d08fdba | 12265 | { |
8251199e | 12266 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba MS |
12267 | return; |
12268 | } | |
12269 | parmtype = TREE_VALUE (TREE_CHAIN (argtypes)); | |
12270 | ||
596ea4e5 AS |
12271 | /* [class.copy] |
12272 | ||
12273 | A user-declared copy assignment operator X::operator= is | |
12274 | a non-static non-template member function of class X with | |
12275 | exactly one parameter of type X, X&, const X&, volatile | |
12276 | X& or const volatile X&. */ | |
f0e01782 | 12277 | if (copy_assignment_arg_p (parmtype, virtualp) |
596ea4e5 AS |
12278 | && !(DECL_TEMPLATE_INSTANTIATION (decl) |
12279 | && is_member_template (DECL_TI_TEMPLATE (decl))) | |
a28e3c7f | 12280 | && ! friendp) |
8d08fdba MS |
12281 | { |
12282 | TYPE_HAS_ASSIGN_REF (current_class_type) = 1; | |
f0e01782 | 12283 | if (TREE_CODE (parmtype) != REFERENCE_TYPE |
91063b51 | 12284 | || CP_TYPE_CONST_P (TREE_TYPE (parmtype))) |
8d08fdba MS |
12285 | TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1; |
12286 | } | |
12287 | } | |
596ea4e5 | 12288 | else if (operator_code == COND_EXPR) |
8d08fdba MS |
12289 | { |
12290 | /* 13.4.0.3 */ | |
cb9a3ff8 | 12291 | cp_error ("ISO C++ prohibits overloading operator ?:"); |
68642fb6 | 12292 | } |
596ea4e5 | 12293 | else if (ambi_op_p (operator_code)) |
8d08fdba | 12294 | { |
596ea4e5 AS |
12295 | if (arity == 1) |
12296 | /* We pick the one-argument operator codes by default, so | |
12297 | we don't have to change anything. */ | |
12298 | ; | |
12299 | else if (arity == 2) | |
8d08fdba | 12300 | { |
596ea4e5 AS |
12301 | /* If we thought this was a unary operator, we now know |
12302 | it to be a binary operator. */ | |
12303 | switch (operator_code) | |
12304 | { | |
12305 | case INDIRECT_REF: | |
12306 | operator_code = MULT_EXPR; | |
12307 | break; | |
12308 | ||
12309 | case ADDR_EXPR: | |
12310 | operator_code = BIT_AND_EXPR; | |
12311 | break; | |
12312 | ||
12313 | case CONVERT_EXPR: | |
12314 | operator_code = PLUS_EXPR; | |
12315 | break; | |
12316 | ||
12317 | case NEGATE_EXPR: | |
12318 | operator_code = MINUS_EXPR; | |
12319 | break; | |
12320 | ||
12321 | case PREINCREMENT_EXPR: | |
12322 | operator_code = POSTINCREMENT_EXPR; | |
12323 | break; | |
12324 | ||
12325 | case PREDECREMENT_EXPR: | |
655dc6ee | 12326 | operator_code = POSTDECREMENT_EXPR; |
596ea4e5 AS |
12327 | break; |
12328 | ||
12329 | default: | |
12330 | my_friendly_abort (20000527); | |
12331 | } | |
12332 | ||
12333 | SET_OVERLOADED_OPERATOR_CODE (decl, operator_code); | |
12334 | ||
12335 | if ((operator_code == POSTINCREMENT_EXPR | |
12336 | || operator_code == POSTDECREMENT_EXPR) | |
5156628f | 12337 | && ! processing_template_decl |
007e5fea | 12338 | && ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes)), integer_type_node)) |
8d08fdba MS |
12339 | { |
12340 | if (methodp) | |
8251199e | 12341 | cp_error ("postfix `%D' must take `int' as its argument", |
8d08fdba MS |
12342 | decl); |
12343 | else | |
8251199e JM |
12344 | cp_error |
12345 | ("postfix `%D' must take `int' as its second argument", | |
12346 | decl); | |
8d08fdba MS |
12347 | } |
12348 | } | |
12349 | else | |
12350 | { | |
12351 | if (methodp) | |
8251199e | 12352 | cp_error ("`%D' must take either zero or one argument", decl); |
8d08fdba | 12353 | else |
8251199e | 12354 | cp_error ("`%D' must take either one or two arguments", decl); |
8d08fdba | 12355 | } |
824b9a4c MS |
12356 | |
12357 | /* More Effective C++ rule 6. */ | |
eb448459 | 12358 | if (warn_ecpp |
596ea4e5 AS |
12359 | && (operator_code == POSTINCREMENT_EXPR |
12360 | || operator_code == POSTDECREMENT_EXPR | |
12361 | || operator_code == PREINCREMENT_EXPR | |
12362 | || operator_code == PREDECREMENT_EXPR)) | |
824b9a4c MS |
12363 | { |
12364 | tree arg = TREE_VALUE (argtypes); | |
12365 | tree ret = TREE_TYPE (TREE_TYPE (decl)); | |
12366 | if (methodp || TREE_CODE (arg) == REFERENCE_TYPE) | |
12367 | arg = TREE_TYPE (arg); | |
12368 | arg = TYPE_MAIN_VARIANT (arg); | |
596ea4e5 AS |
12369 | if (operator_code == PREINCREMENT_EXPR |
12370 | || operator_code == PREDECREMENT_EXPR) | |
824b9a4c MS |
12371 | { |
12372 | if (TREE_CODE (ret) != REFERENCE_TYPE | |
3bfdc719 MM |
12373 | || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)), |
12374 | arg)) | |
8251199e | 12375 | cp_warning ("prefix `%D' should return `%T'", decl, |
824b9a4c MS |
12376 | build_reference_type (arg)); |
12377 | } | |
12378 | else | |
12379 | { | |
3bfdc719 | 12380 | if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg)) |
8251199e | 12381 | cp_warning ("postfix `%D' should return `%T'", decl, arg); |
824b9a4c MS |
12382 | } |
12383 | } | |
8d08fdba | 12384 | } |
596ea4e5 | 12385 | else if (unary_op_p (operator_code)) |
8d08fdba | 12386 | { |
596ea4e5 | 12387 | if (arity != 1) |
8d08fdba MS |
12388 | { |
12389 | if (methodp) | |
8251199e | 12390 | cp_error ("`%D' must take `void'", decl); |
8d08fdba | 12391 | else |
8251199e | 12392 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba MS |
12393 | } |
12394 | } | |
596ea4e5 | 12395 | else /* if (binary_op_p (operator_code)) */ |
8d08fdba | 12396 | { |
596ea4e5 | 12397 | if (arity != 2) |
8d08fdba MS |
12398 | { |
12399 | if (methodp) | |
8251199e | 12400 | cp_error ("`%D' must take exactly one argument", decl); |
8d08fdba | 12401 | else |
8251199e | 12402 | cp_error ("`%D' must take exactly two arguments", decl); |
8d08fdba | 12403 | } |
824b9a4c MS |
12404 | |
12405 | /* More Effective C++ rule 7. */ | |
eb448459 | 12406 | if (warn_ecpp |
596ea4e5 AS |
12407 | && (operator_code == TRUTH_ANDIF_EXPR |
12408 | || operator_code == TRUTH_ORIF_EXPR | |
12409 | || operator_code == COMPOUND_EXPR)) | |
8251199e | 12410 | cp_warning ("user-defined `%D' always evaluates both arguments", |
824b9a4c MS |
12411 | decl); |
12412 | } | |
12413 | ||
12414 | /* Effective C++ rule 23. */ | |
eb448459 | 12415 | if (warn_ecpp |
596ea4e5 AS |
12416 | && arity == 2 |
12417 | && (operator_code == PLUS_EXPR | |
12418 | || operator_code == MINUS_EXPR | |
12419 | || operator_code == TRUNC_DIV_EXPR | |
12420 | || operator_code == MULT_EXPR) | |
824b9a4c | 12421 | && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE) |
8251199e | 12422 | cp_warning ("`%D' should return by value", decl); |
8d08fdba MS |
12423 | |
12424 | /* 13.4.0.8 */ | |
34332678 CT |
12425 | for (; argtypes && argtypes != void_list_node; |
12426 | argtypes = TREE_CHAIN (argtypes)) | |
12427 | if (TREE_PURPOSE (argtypes)) | |
12428 | { | |
12429 | TREE_PURPOSE (argtypes) = NULL_TREE; | |
596ea4e5 AS |
12430 | if (operator_code == POSTINCREMENT_EXPR |
12431 | || operator_code == POSTDECREMENT_EXPR) | |
34332678 CT |
12432 | { |
12433 | if (pedantic) | |
12434 | cp_pedwarn ("`%D' cannot have default arguments", decl); | |
12435 | } | |
12436 | else | |
12437 | cp_error ("`%D' cannot have default arguments", decl); | |
12438 | } | |
12439 | ||
8d08fdba MS |
12440 | } |
12441 | } | |
12442 | \f | |
d8e178a0 | 12443 | static const char * |
094fe153 JM |
12444 | tag_name (code) |
12445 | enum tag_types code; | |
12446 | { | |
12447 | switch (code) | |
12448 | { | |
12449 | case record_type: | |
12450 | return "struct"; | |
12451 | case class_type: | |
12452 | return "class"; | |
12453 | case union_type: | |
12454 | return "union "; | |
12455 | case enum_type: | |
12456 | return "enum"; | |
094fe153 JM |
12457 | default: |
12458 | my_friendly_abort (981122); | |
12459 | } | |
12460 | } | |
12461 | ||
8d08fdba MS |
12462 | /* Get the struct, enum or union (CODE says which) with tag NAME. |
12463 | Define the tag as a forward-reference if it is not defined. | |
12464 | ||
12465 | C++: If a class derivation is given, process it here, and report | |
12466 | an error if multiple derivation declarations are not identical. | |
12467 | ||
12468 | If this is a definition, come in through xref_tag and only look in | |
12469 | the current frame for the name (since C++ allows new names in any | |
12470 | scope.) */ | |
12471 | ||
8d08fdba | 12472 | tree |
ca107ded | 12473 | xref_tag (code_type_node, name, globalize) |
8d08fdba | 12474 | tree code_type_node; |
ca107ded | 12475 | tree name; |
8d08fdba MS |
12476 | int globalize; |
12477 | { | |
12478 | enum tag_types tag_code; | |
12479 | enum tree_code code; | |
8d08fdba | 12480 | register tree ref, t; |
8f032717 | 12481 | struct binding_level *b = current_binding_level; |
a80e4195 | 12482 | int got_type = 0; |
dc8263bc | 12483 | tree attributes = NULL_TREE; |
25aab5d0 | 12484 | tree context = NULL_TREE; |
dc8263bc JM |
12485 | |
12486 | /* If we are called from the parser, code_type_node will sometimes be a | |
12487 | TREE_LIST. This indicates that the user wrote | |
12488 | "class __attribute__ ((foo)) bar". Extract the attributes so we can | |
12489 | use them later. */ | |
12490 | if (TREE_CODE (code_type_node) == TREE_LIST) | |
12491 | { | |
12492 | attributes = TREE_PURPOSE (code_type_node); | |
12493 | code_type_node = TREE_VALUE (code_type_node); | |
12494 | } | |
8d08fdba | 12495 | |
665f2503 | 12496 | tag_code = (enum tag_types) tree_low_cst (code_type_node, 1); |
8d08fdba MS |
12497 | switch (tag_code) |
12498 | { | |
12499 | case record_type: | |
12500 | case class_type: | |
8d08fdba | 12501 | code = RECORD_TYPE; |
8d08fdba MS |
12502 | break; |
12503 | case union_type: | |
12504 | code = UNION_TYPE; | |
8d08fdba MS |
12505 | break; |
12506 | case enum_type: | |
12507 | code = ENUMERAL_TYPE; | |
12508 | break; | |
12509 | default: | |
12510 | my_friendly_abort (18); | |
12511 | } | |
12512 | ||
12513 | /* If a cross reference is requested, look up the type | |
12514 | already defined for this tag and return it. */ | |
2f939d94 | 12515 | if (TYPE_P (name)) |
be99da77 MS |
12516 | { |
12517 | t = name; | |
a80e4195 MS |
12518 | name = TYPE_IDENTIFIER (t); |
12519 | got_type = 1; | |
be99da77 MS |
12520 | } |
12521 | else | |
12522 | t = IDENTIFIER_TYPE_VALUE (name); | |
61a127b3 | 12523 | |
f2ae0c45 JM |
12524 | /* Warn about 'friend struct Inherited;' doing the wrong thing. */ |
12525 | if (t && globalize && TREE_CODE (t) == TYPENAME_TYPE) | |
12526 | { | |
12527 | static int explained; | |
12528 | ||
12529 | cp_warning ("`%s %T' declares a new type at namespace scope;\n\ | |
12530 | to refer to the inherited type, say `%s %T::%T'%s", | |
12531 | tag_name (tag_code), name, tag_name (tag_code), | |
12532 | constructor_name (current_class_type), TYPE_IDENTIFIER (t), | |
12533 | (!explained ? "\n\ | |
12534 | (names from dependent base classes are not visible to unqualified name lookup)" | |
12535 | : "")); | |
12536 | ||
12537 | explained = 1; | |
12538 | } | |
12539 | ||
73b0fce8 | 12540 | if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM |
a1281f45 | 12541 | && TREE_CODE (t) != BOUND_TEMPLATE_TEMPLATE_PARM) |
a0a33927 MS |
12542 | t = NULL_TREE; |
12543 | ||
8ccc31eb | 12544 | if (! globalize) |
8d08fdba | 12545 | { |
f3400fe2 JM |
12546 | /* If we know we are defining this tag, only look it up in |
12547 | this scope and don't try to find it as a type. */ | |
12548 | ref = lookup_tag (code, name, b, 1); | |
8d08fdba MS |
12549 | } |
12550 | else | |
12551 | { | |
25aab5d0 | 12552 | if (t) |
36a117a5 | 12553 | { |
25aab5d0 MM |
12554 | /* [dcl.type.elab] If the identifier resolves to a |
12555 | typedef-name or a template type-parameter, the | |
12556 | elaborated-type-specifier is ill-formed. */ | |
12557 | if (t != TYPE_MAIN_VARIANT (t) | |
12558 | || (CLASS_TYPE_P (t) && TYPE_WAS_ANONYMOUS (t))) | |
12559 | cp_pedwarn ("using typedef-name `%D' after `%s'", | |
12560 | TYPE_NAME (t), tag_name (tag_code)); | |
12561 | else if (TREE_CODE (t) == TEMPLATE_TYPE_PARM) | |
12562 | cp_error ("using template type parameter `%T' after `%s'", | |
12563 | t, tag_name (tag_code)); | |
12564 | ||
12565 | ref = t; | |
12566 | } | |
12567 | else | |
12568 | ref = lookup_tag (code, name, b, 0); | |
68642fb6 | 12569 | |
25aab5d0 MM |
12570 | if (! ref) |
12571 | { | |
12572 | /* Try finding it as a type declaration. If that wins, | |
68642fb6 | 12573 | use it. */ |
25aab5d0 MM |
12574 | ref = lookup_name (name, 1); |
12575 | ||
12576 | if (ref != NULL_TREE | |
12577 | && processing_template_decl | |
12578 | && DECL_CLASS_TEMPLATE_P (ref) | |
12579 | && template_class_depth (current_class_type) == 0) | |
12580 | /* Since GLOBALIZE is true, we're declaring a global | |
6757edfe | 12581 | template, so we want this type. */ |
17aec3eb | 12582 | ref = DECL_TEMPLATE_RESULT (ref); |
6757edfe | 12583 | |
25aab5d0 MM |
12584 | if (ref && TREE_CODE (ref) == TYPE_DECL |
12585 | && TREE_CODE (TREE_TYPE (ref)) == code) | |
12586 | ref = TREE_TYPE (ref); | |
12587 | else | |
12588 | ref = NULL_TREE; | |
12589 | } | |
12590 | ||
68642fb6 UD |
12591 | if (ref && current_class_type |
12592 | && template_class_depth (current_class_type) | |
12593 | && PROCESSING_REAL_TEMPLATE_DECL_P ()) | |
25aab5d0 MM |
12594 | { |
12595 | /* Since GLOBALIZE is non-zero, we are not looking at a | |
12596 | definition of this tag. Since, in addition, we are currently | |
12597 | processing a (member) template declaration of a template | |
12598 | class, we must be very careful; consider: | |
12599 | ||
12600 | template <class X> | |
12601 | struct S1 | |
12602 | ||
12603 | template <class U> | |
12604 | struct S2 | |
12605 | { template <class V> | |
12606 | friend struct S1; }; | |
12607 | ||
12608 | Here, the S2::S1 declaration should not be confused with the | |
12609 | outer declaration. In particular, the inner version should | |
12610 | have a template parameter of level 2, not level 1. This | |
12611 | would be particularly important if the member declaration | |
12612 | were instead: | |
12613 | ||
12614 | template <class V = U> friend struct S1; | |
12615 | ||
12616 | say, when we should tsubst into `U' when instantiating | |
12617 | S2. On the other hand, when presented with: | |
12618 | ||
12619 | template <class T> | |
12620 | struct S1 { | |
12621 | template <class U> | |
12622 | struct S2 {}; | |
12623 | template <class U> | |
12624 | friend struct S2; | |
12625 | }; | |
12626 | ||
12627 | we must find the inner binding eventually. We | |
12628 | accomplish this by making sure that the new type we | |
12629 | create to represent this declaration has the right | |
12630 | TYPE_CONTEXT. */ | |
12631 | context = TYPE_CONTEXT (ref); | |
12632 | ref = NULL_TREE; | |
8d08fdba MS |
12633 | } |
12634 | } | |
12635 | ||
8d08fdba MS |
12636 | if (! ref) |
12637 | { | |
12638 | /* If no such tag is yet defined, create a forward-reference node | |
12639 | and record it as the "definition". | |
12640 | When a real declaration of this type is found, | |
12641 | the forward-reference will be altered into a real type. */ | |
8d08fdba MS |
12642 | if (code == ENUMERAL_TYPE) |
12643 | { | |
8251199e | 12644 | cp_error ("use of enum `%#D' without previous declaration", name); |
fc378698 | 12645 | |
8d08fdba MS |
12646 | ref = make_node (ENUMERAL_TYPE); |
12647 | ||
12648 | /* Give the type a default layout like unsigned int | |
12649 | to avoid crashing if it does not get defined. */ | |
12650 | TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node); | |
12651 | TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node); | |
11cf4d18 | 12652 | TYPE_USER_ALIGN (ref) = 0; |
8d08fdba MS |
12653 | TREE_UNSIGNED (ref) = 1; |
12654 | TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node); | |
12655 | TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node); | |
12656 | TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node); | |
12657 | ||
12658 | /* Enable us to recognize when a type is created in class context. | |
12659 | To do nested classes correctly, this should probably be cleared | |
12660 | out when we leave this classes scope. Currently this in only | |
12661 | done in `start_enum'. */ | |
12662 | ||
12663 | pushtag (name, ref, globalize); | |
8d08fdba | 12664 | } |
8d08fdba MS |
12665 | else |
12666 | { | |
8d08fdba | 12667 | struct binding_level *old_b = class_binding_level; |
8d08fdba | 12668 | |
33848bb0 | 12669 | ref = make_aggr_type (code); |
25aab5d0 | 12670 | TYPE_CONTEXT (ref) = context; |
8d08fdba | 12671 | |
8d08fdba MS |
12672 | #ifdef NONNESTED_CLASSES |
12673 | /* Class types don't nest the way enums do. */ | |
12674 | class_binding_level = (struct binding_level *)0; | |
12675 | #endif | |
12676 | pushtag (name, ref, globalize); | |
12677 | class_binding_level = old_b; | |
8d08fdba MS |
12678 | } |
12679 | } | |
12680 | else | |
12681 | { | |
7fe6899f | 12682 | if (!globalize && processing_template_decl && IS_AGGR_TYPE (ref)) |
6757edfe | 12683 | redeclare_class_template (ref, current_template_parms); |
8d08fdba MS |
12684 | } |
12685 | ||
8d08fdba MS |
12686 | /* Until the type is defined, tentatively accept whatever |
12687 | structure tag the user hands us. */ | |
d0f062fb | 12688 | if (!COMPLETE_TYPE_P (ref) |
8d08fdba MS |
12689 | && ref != current_class_type |
12690 | /* Have to check this, in case we have contradictory tag info. */ | |
12691 | && IS_AGGR_TYPE_CODE (TREE_CODE (ref))) | |
12692 | { | |
12693 | if (tag_code == class_type) | |
12694 | CLASSTYPE_DECLARED_CLASS (ref) = 1; | |
6eabb241 | 12695 | else if (tag_code == record_type) |
8d08fdba MS |
12696 | CLASSTYPE_DECLARED_CLASS (ref) = 0; |
12697 | } | |
12698 | ||
dc8263bc JM |
12699 | TREE_TYPE (ref) = attributes; |
12700 | ||
8d08fdba MS |
12701 | return ref; |
12702 | } | |
8ccc31eb | 12703 | |
fc378698 MS |
12704 | tree |
12705 | xref_tag_from_type (old, id, globalize) | |
12706 | tree old, id; | |
12707 | int globalize; | |
12708 | { | |
12709 | tree code_type_node; | |
12710 | ||
12711 | if (TREE_CODE (old) == RECORD_TYPE) | |
12712 | code_type_node = (CLASSTYPE_DECLARED_CLASS (old) | |
12713 | ? class_type_node : record_type_node); | |
12714 | else | |
12715 | code_type_node = union_type_node; | |
12716 | ||
12717 | if (id == NULL_TREE) | |
12718 | id = TYPE_IDENTIFIER (old); | |
12719 | ||
ca107ded | 12720 | return xref_tag (code_type_node, id, globalize); |
fc378698 MS |
12721 | } |
12722 | ||
3fd71a52 MM |
12723 | /* REF is a type (named NAME), for which we have just seen some |
12724 | baseclasses. BINFO is a list of those baseclasses; the | |
12725 | TREE_PURPOSE is an access_* node, and the TREE_VALUE is the type of | |
12726 | the base-class. CODE_TYPE_NODE indicates whether REF is a class, | |
12727 | struct, or union. */ | |
12728 | ||
8ccc31eb MS |
12729 | void |
12730 | xref_basetypes (code_type_node, name, ref, binfo) | |
12731 | tree code_type_node; | |
12732 | tree name, ref; | |
12733 | tree binfo; | |
12734 | { | |
12735 | /* In the declaration `A : X, Y, ... Z' we mark all the types | |
12736 | (A, X, Y, ..., Z) so we can check for duplicates. */ | |
12737 | tree binfos; | |
d6479fe7 MM |
12738 | tree base; |
12739 | ||
8ccc31eb | 12740 | int i, len; |
665f2503 | 12741 | enum tag_types tag_code = (enum tag_types) tree_low_cst (code_type_node, 1); |
8ccc31eb MS |
12742 | |
12743 | if (tag_code == union_type) | |
12744 | { | |
8251199e | 12745 | cp_error ("derived union `%T' invalid", ref); |
8ccc31eb MS |
12746 | return; |
12747 | } | |
12748 | ||
12749 | len = list_length (binfo); | |
8ccc31eb | 12750 | |
d6479fe7 MM |
12751 | /* First, make sure that any templates in base-classes are |
12752 | instantiated. This ensures that if we call ourselves recursively | |
12753 | we do not get confused about which classes are marked and which | |
12754 | are not. */ | |
12755 | for (base = binfo; base; base = TREE_CHAIN (base)) | |
12756 | complete_type (TREE_VALUE (base)); | |
12757 | ||
8ccc31eb MS |
12758 | SET_CLASSTYPE_MARKED (ref); |
12759 | BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len); | |
12760 | ||
12761 | for (i = 0; binfo; binfo = TREE_CHAIN (binfo)) | |
12762 | { | |
12763 | /* The base of a derived struct is public by default. */ | |
12764 | int via_public | |
be99da77 MS |
12765 | = (TREE_PURPOSE (binfo) == access_public_node |
12766 | || TREE_PURPOSE (binfo) == access_public_virtual_node | |
8ccc31eb | 12767 | || (tag_code != class_type |
be99da77 MS |
12768 | && (TREE_PURPOSE (binfo) == access_default_node |
12769 | || TREE_PURPOSE (binfo) == access_default_virtual_node))); | |
d8b55a76 JM |
12770 | int via_protected |
12771 | = (TREE_PURPOSE (binfo) == access_protected_node | |
12772 | || TREE_PURPOSE (binfo) == access_protected_virtual_node); | |
8ccc31eb | 12773 | int via_virtual |
be99da77 | 12774 | = (TREE_PURPOSE (binfo) == access_private_virtual_node |
d8b55a76 | 12775 | || TREE_PURPOSE (binfo) == access_protected_virtual_node |
be99da77 MS |
12776 | || TREE_PURPOSE (binfo) == access_public_virtual_node |
12777 | || TREE_PURPOSE (binfo) == access_default_virtual_node); | |
12778 | tree basetype = TREE_VALUE (binfo); | |
8ccc31eb MS |
12779 | tree base_binfo; |
12780 | ||
8ccc31eb MS |
12781 | if (basetype && TREE_CODE (basetype) == TYPE_DECL) |
12782 | basetype = TREE_TYPE (basetype); | |
5566b478 MS |
12783 | if (!basetype |
12784 | || (TREE_CODE (basetype) != RECORD_TYPE | |
a80e4195 | 12785 | && TREE_CODE (basetype) != TYPENAME_TYPE |
73b0fce8 | 12786 | && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM |
a1281f45 | 12787 | && TREE_CODE (basetype) != BOUND_TEMPLATE_TEMPLATE_PARM)) |
8ccc31eb | 12788 | { |
8251199e | 12789 | cp_error ("base type `%T' fails to be a struct or class type", |
8ccc31eb MS |
12790 | TREE_VALUE (binfo)); |
12791 | continue; | |
12792 | } | |
2b9dc906 | 12793 | |
11b5139c | 12794 | GNU_xref_hier (name, basetype, via_public, via_virtual, 0); |
2b9dc906 | 12795 | |
8adf5b5e JM |
12796 | /* This code replaces similar code in layout_basetypes. |
12797 | We put the complete_type first for implicit `typename'. */ | |
d0f062fb | 12798 | if (!COMPLETE_TYPE_P (basetype) |
2b9dc906 | 12799 | && ! (current_template_parms && uses_template_parms (basetype))) |
8ccc31eb | 12800 | { |
8251199e | 12801 | cp_error ("base class `%T' has incomplete type", basetype); |
8ccc31eb MS |
12802 | continue; |
12803 | } | |
8ccc31eb MS |
12804 | else |
12805 | { | |
12806 | if (CLASSTYPE_MARKED (basetype)) | |
12807 | { | |
12808 | if (basetype == ref) | |
8251199e | 12809 | cp_error ("recursive type `%T' undefined", basetype); |
8ccc31eb | 12810 | else |
8251199e | 12811 | cp_error ("duplicate base type `%T' invalid", basetype); |
8ccc31eb MS |
12812 | continue; |
12813 | } | |
12814 | ||
eff71ab0 | 12815 | if (TYPE_FOR_JAVA (basetype) |
46ccf50a | 12816 | && (current_lang_depth () == 0)) |
eff71ab0 PB |
12817 | TYPE_FOR_JAVA (ref) = 1; |
12818 | ||
8ccc31eb MS |
12819 | /* Note that the BINFO records which describe individual |
12820 | inheritances are *not* shared in the lattice! They | |
12821 | cannot be shared because a given baseclass may be | |
12822 | inherited with different `accessibility' by different | |
12823 | derived classes. (Each BINFO record describing an | |
12824 | individual inheritance contains flags which say what | |
12825 | the `accessibility' of that particular inheritance is.) */ | |
68642fb6 UD |
12826 | |
12827 | base_binfo | |
fed3cef0 | 12828 | = make_binfo (size_zero_node, basetype, |
7ddedda4 MM |
12829 | CLASS_TYPE_P (basetype) |
12830 | ? TYPE_BINFO_VTABLE (basetype) : NULL_TREE, | |
12831 | CLASS_TYPE_P (basetype) | |
12832 | ? TYPE_BINFO_VIRTUALS (basetype) : NULL_TREE); | |
68642fb6 | 12833 | |
8ccc31eb MS |
12834 | TREE_VEC_ELT (binfos, i) = base_binfo; |
12835 | TREE_VIA_PUBLIC (base_binfo) = via_public; | |
12836 | TREE_VIA_PROTECTED (base_binfo) = via_protected; | |
12837 | TREE_VIA_VIRTUAL (base_binfo) = via_virtual; | |
12838 | BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref); | |
12839 | ||
dfbcd65a JM |
12840 | /* We need to unshare the binfos now so that lookups during class |
12841 | definition work. */ | |
12842 | unshare_base_binfos (base_binfo); | |
12843 | ||
8ccc31eb | 12844 | SET_CLASSTYPE_MARKED (basetype); |
9e9ff709 | 12845 | |
8ccc31eb MS |
12846 | /* We are free to modify these bits because they are meaningless |
12847 | at top level, and BASETYPE is a top-level type. */ | |
12848 | if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype)) | |
12849 | { | |
12850 | TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1; | |
4c6b7393 MM |
12851 | /* Converting to a virtual base class requires looking |
12852 | up the offset of the virtual base. */ | |
12853 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1; | |
8ccc31eb MS |
12854 | } |
12855 | ||
7ddedda4 MM |
12856 | if (CLASS_TYPE_P (basetype)) |
12857 | { | |
5362b086 | 12858 | TYPE_HAS_NEW_OPERATOR (ref) |
834c6dff | 12859 | |= TYPE_HAS_NEW_OPERATOR (basetype); |
5362b086 | 12860 | TYPE_HAS_ARRAY_NEW_OPERATOR (ref) |
834c6dff | 12861 | |= TYPE_HAS_ARRAY_NEW_OPERATOR (basetype); |
7ddedda4 | 12862 | TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype); |
4c6b7393 | 12863 | /* If the base-class uses multiple inheritance, so do we. */ |
68642fb6 | 12864 | TYPE_USES_MULTIPLE_INHERITANCE (ref) |
4c6b7393 MM |
12865 | |= TYPE_USES_MULTIPLE_INHERITANCE (basetype); |
12866 | /* Likewise, if converting to a base of the base may require | |
12867 | code, then we may need to generate code to convert to a | |
12868 | base as well. */ | |
68642fb6 | 12869 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) |
4c6b7393 | 12870 | |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype); |
7ddedda4 MM |
12871 | } |
12872 | ||
8ccc31eb MS |
12873 | i += 1; |
12874 | } | |
12875 | } | |
12876 | if (i) | |
12877 | TREE_VEC_LENGTH (binfos) = i; | |
12878 | else | |
12879 | BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE; | |
12880 | ||
12881 | if (i > 1) | |
7ddedda4 | 12882 | { |
4c6b7393 MM |
12883 | TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1; |
12884 | /* If there is more than one non-empty they cannot be at the same | |
12885 | address. */ | |
12886 | TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1; | |
7ddedda4 MM |
12887 | } |
12888 | ||
8ccc31eb MS |
12889 | /* Unmark all the types. */ |
12890 | while (--i >= 0) | |
12891 | CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i))); | |
12892 | CLEAR_CLASSTYPE_MARKED (ref); | |
12893 | ||
70c532b5 MM |
12894 | /* Now that we know all the base-classes, set up the list of virtual |
12895 | bases. */ | |
23381155 | 12896 | get_vbase_types (ref); |
8ccc31eb | 12897 | } |
68642fb6 | 12898 | |
8d08fdba | 12899 | \f |
8d08fdba MS |
12900 | /* Begin compiling the definition of an enumeration type. |
12901 | NAME is its name (or null if anonymous). | |
12902 | Returns the type object, as yet incomplete. | |
12903 | Also records info about it so that build_enumerator | |
12904 | may be used to declare the individual values as they are read. */ | |
12905 | ||
12906 | tree | |
12907 | start_enum (name) | |
12908 | tree name; | |
12909 | { | |
12910 | register tree enumtype = NULL_TREE; | |
8f032717 | 12911 | struct binding_level *b = current_binding_level; |
8d08fdba MS |
12912 | |
12913 | /* If this is the real definition for a previous forward reference, | |
12914 | fill in the contents in the same object that used to be the | |
12915 | forward reference. */ | |
12916 | ||
12917 | if (name != NULL_TREE) | |
12918 | enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1); | |
12919 | ||
12920 | if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE) | |
30ff8252 NS |
12921 | { |
12922 | cp_error ("multiple definition of `%#T'", enumtype); | |
12923 | cp_error_at ("previous definition here", enumtype); | |
58595203 MM |
12924 | /* Clear out TYPE_VALUES, and start again. */ |
12925 | TYPE_VALUES (enumtype) = NULL_TREE; | |
30ff8252 | 12926 | } |
8d08fdba MS |
12927 | else |
12928 | { | |
12929 | enumtype = make_node (ENUMERAL_TYPE); | |
12930 | pushtag (name, enumtype, 0); | |
12931 | } | |
12932 | ||
12933 | if (current_class_type) | |
12934 | TREE_ADDRESSABLE (b->tags) = 1; | |
c91a56d2 | 12935 | |
8d08fdba MS |
12936 | GNU_xref_decl (current_function_decl, enumtype); |
12937 | return enumtype; | |
12938 | } | |
12939 | ||
12940 | /* After processing and defining all the values of an enumeration type, | |
12941 | install their decls in the enumeration type and finish it off. | |
968b956a | 12942 | ENUMTYPE is the type object and VALUES a list of name-value pairs. */ |
8d08fdba | 12943 | |
968b956a | 12944 | void |
dbfe2124 MM |
12945 | finish_enum (enumtype) |
12946 | tree enumtype; | |
8d08fdba | 12947 | { |
968b956a MM |
12948 | tree pair; |
12949 | tree minnode; | |
12950 | tree maxnode; | |
12951 | tree t; | |
12952 | bool unsignedp; | |
12953 | int lowprec; | |
12954 | int highprec; | |
12955 | int precision; | |
12956 | ||
12957 | /* We built up the VALUES in reverse order. */ | |
12958 | TYPE_VALUES (enumtype) = nreverse (TYPE_VALUES (enumtype)); | |
12959 | ||
12960 | /* [dcl.enum] | |
12961 | ||
12962 | Following the closing brace of an enum-specifier, each | |
12963 | enumerator has the type of its enumeration. Prior to the | |
12964 | closing brace, the type of each enumerator is the type of | |
12965 | its initializing value. */ | |
12966 | for (pair = TYPE_VALUES (enumtype); pair; pair = TREE_CHAIN (pair)) | |
12967 | TREE_TYPE (TREE_VALUE (pair)) = enumtype; | |
12968 | ||
12969 | /* For a enum defined in a template, all further processing is | |
12970 | postponed until the template is instantiated. */ | |
12971 | if (processing_template_decl) | |
12972 | { | |
12973 | tree scope = current_scope (); | |
12974 | if (scope && TREE_CODE (scope) == FUNCTION_DECL) | |
12975 | add_stmt (build_min (TAG_DEFN, enumtype)); | |
8d08fdba | 12976 | |
0ba8a114 | 12977 | |
968b956a MM |
12978 | return; |
12979 | } | |
12980 | ||
12981 | /* Figure out what the minimum and maximum values of the enumerators | |
12982 | are. */ | |
12983 | if (TYPE_VALUES (enumtype)) | |
8d08fdba | 12984 | { |
968b956a | 12985 | minnode = maxnode = NULL_TREE; |
5566b478 | 12986 | |
968b956a MM |
12987 | for (pair = TYPE_VALUES (enumtype); |
12988 | pair; | |
12989 | pair = TREE_CHAIN (pair)) | |
8d08fdba | 12990 | { |
ed44da02 MM |
12991 | tree value; |
12992 | ||
968b956a | 12993 | value = DECL_INITIAL (TREE_VALUE (pair)); |
ed44da02 | 12994 | |
968b956a MM |
12995 | if (!minnode) |
12996 | minnode = maxnode = value; | |
12997 | else if (tree_int_cst_lt (maxnode, value)) | |
12998 | maxnode = value; | |
12999 | else if (tree_int_cst_lt (value, minnode)) | |
13000 | minnode = value; | |
8d08fdba MS |
13001 | } |
13002 | } | |
f376e137 | 13003 | else |
968b956a MM |
13004 | minnode = maxnode = integer_zero_node; |
13005 | ||
13006 | /* Compute the number of bits require to represent all values of the | |
13007 | enumeration. We must do this before the type of MINNODE and | |
13008 | MAXNODE are transformed, since min_precision relies on the | |
13009 | TREE_TYPE of the value it is passed. */ | |
13010 | unsignedp = tree_int_cst_sgn (minnode) >= 0; | |
13011 | lowprec = min_precision (minnode, unsignedp); | |
13012 | highprec = min_precision (maxnode, unsignedp); | |
13013 | precision = MAX (lowprec, highprec); | |
13014 | ||
13015 | /* Set the TREE_TYPE for the values as well. That's so that when we | |
13016 | call decl_constant_value we get an entity of the right type (but | |
13017 | with the constant value). In addition, transform the TYPE_VALUES | |
13018 | list to contain the values, rather than the CONST_DECLs for them. */ | |
13019 | for (pair = TYPE_VALUES (enumtype); pair; pair = TREE_CHAIN (pair)) | |
13020 | { | |
13021 | tree value = DECL_INITIAL (TREE_VALUE (pair)); | |
13022 | ||
13023 | TREE_TYPE (value) = enumtype; | |
13024 | TREE_VALUE (pair) = value; | |
13025 | } | |
13026 | ||
13027 | /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */ | |
13028 | TYPE_SIZE (enumtype) = NULL_TREE; | |
13029 | TYPE_PRECISION (enumtype) = precision; | |
13030 | if (unsignedp) | |
13031 | fixup_unsigned_type (enumtype); | |
cbf882af | 13032 | else |
968b956a | 13033 | fixup_signed_type (enumtype); |
8d08fdba | 13034 | |
968b956a MM |
13035 | if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node))) |
13036 | /* Use the width of the narrowest normal C type which is wide | |
13037 | enough. */ | |
13038 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size | |
13039 | (precision, 1)); | |
13040 | else | |
13041 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node); | |
68642fb6 | 13042 | |
968b956a MM |
13043 | TYPE_SIZE (enumtype) = NULL_TREE; |
13044 | layout_type (enumtype); | |
8d08fdba | 13045 | |
968b956a MM |
13046 | /* Fix up all variant types of this enum type. */ |
13047 | for (t = TYPE_MAIN_VARIANT (enumtype); t; t = TYPE_NEXT_VARIANT (t)) | |
13048 | { | |
13049 | TYPE_VALUES (t) = TYPE_VALUES (enumtype); | |
13050 | TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (enumtype); | |
13051 | TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (enumtype); | |
13052 | TYPE_SIZE (t) = TYPE_SIZE (enumtype); | |
13053 | TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (enumtype); | |
13054 | TYPE_MODE (t) = TYPE_MODE (enumtype); | |
13055 | TYPE_PRECISION (t) = TYPE_PRECISION (enumtype); | |
13056 | TYPE_ALIGN (t) = TYPE_ALIGN (enumtype); | |
13057 | TYPE_USER_ALIGN (t) = TYPE_USER_ALIGN (enumtype); | |
13058 | TREE_UNSIGNED (t) = TREE_UNSIGNED (enumtype); | |
cbf882af MM |
13059 | } |
13060 | ||
968b956a MM |
13061 | /* Finish debugging output for this type. */ |
13062 | rest_of_type_compilation (enumtype, namespace_bindings_p ()); | |
8d08fdba MS |
13063 | } |
13064 | ||
079e1098 | 13065 | /* Build and install a CONST_DECL for an enumeration constant of the |
58595203 | 13066 | enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided. |
8d08fdba MS |
13067 | Assignment of sequential values by default is handled here. */ |
13068 | ||
58595203 MM |
13069 | void |
13070 | build_enumerator (name, value, enumtype) | |
079e1098 MM |
13071 | tree name; |
13072 | tree value; | |
58595203 | 13073 | tree enumtype; |
8d08fdba | 13074 | { |
58595203 | 13075 | tree decl; |
e8bd800e | 13076 | tree context; |
58595203 MM |
13077 | tree type; |
13078 | tree values; | |
8d08fdba MS |
13079 | |
13080 | /* Remove no-op casts from the value. */ | |
13081 | if (value) | |
13082 | STRIP_TYPE_NOPS (value); | |
13083 | ||
58595203 MM |
13084 | if (! processing_template_decl) |
13085 | { | |
13086 | /* Validate and default VALUE. */ | |
13087 | if (value != NULL_TREE) | |
13088 | { | |
fc611ce0 | 13089 | value = decl_constant_value (value); |
58595203 MM |
13090 | |
13091 | if (TREE_CODE (value) == INTEGER_CST) | |
13092 | { | |
13093 | value = default_conversion (value); | |
13094 | constant_expression_warning (value); | |
13095 | } | |
13096 | else | |
13097 | { | |
13098 | cp_error ("enumerator value for `%D' not integer constant", name); | |
13099 | value = NULL_TREE; | |
13100 | } | |
13101 | } | |
13102 | ||
13103 | /* Default based on previous value. */ | |
13104 | if (value == NULL_TREE && ! processing_template_decl) | |
13105 | { | |
13106 | tree prev_value; | |
13107 | ||
13108 | if (TYPE_VALUES (enumtype)) | |
13109 | { | |
13110 | /* The next value is the previous value ... */ | |
13111 | prev_value = DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype))); | |
13112 | /* ... plus one. */ | |
ab76ca54 MM |
13113 | value = cp_build_binary_op (PLUS_EXPR, |
13114 | prev_value, | |
13115 | integer_one_node); | |
68642fb6 | 13116 | |
58595203 MM |
13117 | if (tree_int_cst_lt (value, prev_value)) |
13118 | cp_error ("overflow in enumeration values at `%D'", name); | |
13119 | } | |
13120 | else | |
13121 | value = integer_zero_node; | |
13122 | } | |
13123 | ||
13124 | /* Remove no-op casts from the value. */ | |
13125 | if (value) | |
13126 | STRIP_TYPE_NOPS (value); | |
013bc8af | 13127 | #if 0 |
58595203 MM |
13128 | /* To fix MAX_VAL enum consts. (bkoz) */ |
13129 | TREE_TYPE (value) = integer_type_node; | |
013bc8af | 13130 | #endif |
58595203 | 13131 | } |
8d08fdba | 13132 | |
58595203 MM |
13133 | /* We always have to copy here; not all INTEGER_CSTs are unshared. |
13134 | Even in other cases, we will later (in finish_enum) be setting | |
13135 | the type of VALUE. But, we don't need to make a copy if this | |
13136 | VALUE is one of the enumeration constants for this same | |
13137 | enumeration type. */ | |
13138 | for (values = TYPE_VALUES (enumtype); values; values = TREE_CHAIN (values)) | |
13139 | if (TREE_VALUE (values) == value) | |
13140 | break; | |
13141 | /* If we didn't break out of the loop, then we do need a copy. */ | |
13142 | if (!values && value) | |
13143 | value = copy_node (value); | |
ed44da02 | 13144 | |
8d08fdba | 13145 | /* C++ associates enums with global, function, or class declarations. */ |
58595203 MM |
13146 | context = current_scope (); |
13147 | ||
13148 | /* Build the actual enumeration constant. Note that the enumeration | |
13149 | constants have the type of their initializers until the | |
13150 | enumeration is complete: | |
13151 | ||
13152 | [ dcl.enum ] | |
13153 | ||
13154 | Following the closing brace of an enum-specifier, each enumer- | |
13155 | ator has the type of its enumeration. Prior to the closing | |
13156 | brace, the type of each enumerator is the type of its | |
13157 | initializing value. | |
13158 | ||
13159 | In finish_enum we will reset the type. Of course, if we're | |
13160 | processing a template, there may be no value. */ | |
13161 | type = value ? TREE_TYPE (value) : NULL_TREE; | |
13162 | ||
13163 | if (context && context == current_class_type) | |
13164 | /* This enum declaration is local to the class. We need the full | |
8f17b5c5 | 13165 | lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */ |
58595203 MM |
13166 | decl = build_lang_decl (CONST_DECL, name, type); |
13167 | else | |
13168 | /* It's a global enum, or it's local to a function. (Note local to | |
e8bd800e | 13169 | a function could mean local to a class method. */ |
58595203 | 13170 | decl = build_decl (CONST_DECL, name, type); |
e8bd800e | 13171 | |
58595203 MM |
13172 | DECL_CONTEXT (decl) = FROB_CONTEXT (context); |
13173 | DECL_INITIAL (decl) = value; | |
13174 | TREE_READONLY (decl) = 1; | |
e8bd800e | 13175 | |
58595203 MM |
13176 | if (context && context == current_class_type) |
13177 | /* In something like `struct S { enum E { i = 7 }; };' we put `i' | |
8f032717 MM |
13178 | on the TYPE_FIELDS list for `S'. (That's so that you can say |
13179 | things like `S::i' later.) */ | |
58595203 MM |
13180 | finish_member_declaration (decl); |
13181 | else | |
13182 | { | |
13183 | pushdecl (decl); | |
13184 | GNU_xref_decl (current_function_decl, decl); | |
13185 | } | |
13186 | ||
13187 | /* Add this enumeration constant to the list for this type. */ | |
13188 | TYPE_VALUES (enumtype) = tree_cons (name, decl, TYPE_VALUES (enumtype)); | |
8d08fdba MS |
13189 | } |
13190 | ||
8d08fdba | 13191 | \f |
a8f73d4b MM |
13192 | /* We're defining DECL. Make sure that it's type is OK. */ |
13193 | ||
13194 | static void | |
f444e36b | 13195 | check_function_type (decl, current_function_parms) |
a8f73d4b | 13196 | tree decl; |
f444e36b | 13197 | tree current_function_parms; |
a8f73d4b MM |
13198 | { |
13199 | tree fntype = TREE_TYPE (decl); | |
d0f062fb | 13200 | tree return_type = complete_type (TREE_TYPE (fntype)); |
a8f73d4b MM |
13201 | |
13202 | /* In a function definition, arg types must be complete. */ | |
13203 | require_complete_types_for_parms (current_function_parms); | |
13204 | ||
d0f062fb | 13205 | if (!COMPLETE_OR_VOID_TYPE_P (return_type)) |
a8f73d4b MM |
13206 | { |
13207 | cp_error ("return type `%#T' is incomplete", TREE_TYPE (fntype)); | |
13208 | ||
13209 | /* Make it return void instead, but don't change the | |
13210 | type of the DECL_RESULT, in case we have a named return value. */ | |
13211 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
13212 | { | |
13213 | tree ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype))); | |
13214 | TREE_TYPE (decl) | |
13215 | = build_cplus_method_type (ctype, | |
13216 | void_type_node, | |
13217 | FUNCTION_ARG_CHAIN (decl)); | |
13218 | } | |
13219 | else | |
13220 | TREE_TYPE (decl) | |
13221 | = build_function_type (void_type_node, | |
13222 | TYPE_ARG_TYPES (TREE_TYPE (decl))); | |
68642fb6 | 13223 | TREE_TYPE (decl) |
a8f73d4b MM |
13224 | = build_exception_variant (fntype, |
13225 | TYPE_RAISES_EXCEPTIONS (fntype)); | |
13226 | } | |
13227 | else | |
13228 | abstract_virtuals_error (decl, TREE_TYPE (fntype)); | |
13229 | } | |
13230 | ||
8d08fdba MS |
13231 | /* Create the FUNCTION_DECL for a function definition. |
13232 | DECLSPECS and DECLARATOR are the parts of the declaration; | |
13233 | they describe the function's name and the type it returns, | |
13234 | but twisted together in a fashion that parallels the syntax of C. | |
13235 | ||
a8f73d4b MM |
13236 | FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the |
13237 | DECLARATOR is really the DECL for the function we are about to | |
13238 | process and that DECLSPECS should be ignored), SF_INCLASS_INLINE | |
f444e36b | 13239 | indicating that the function is an inline defined in-class. |
68642fb6 | 13240 | |
8d08fdba MS |
13241 | This function creates a binding context for the function body |
13242 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
13243 | ||
13244 | Returns 1 on success. If the DECLARATOR is not suitable for a function | |
13245 | (it defines a datum instead), we return 0, which tells | |
13246 | yyparse to report a parse error. | |
13247 | ||
13248 | For C++, we must first check whether that datum makes any sense. | |
13249 | For example, "class A local_a(1,2);" means that variable local_a | |
13250 | is an aggregate of type A, which should have a constructor | |
87e3dbc9 | 13251 | applied to it with the argument list [1, 2]. */ |
8d08fdba MS |
13252 | |
13253 | int | |
a8f73d4b | 13254 | start_function (declspecs, declarator, attrs, flags) |
c11b6f21 | 13255 | tree declspecs, declarator, attrs; |
a8f73d4b | 13256 | int flags; |
8d08fdba | 13257 | { |
5566b478 | 13258 | tree decl1; |
8d08fdba MS |
13259 | tree ctype = NULL_TREE; |
13260 | tree fntype; | |
13261 | tree restype; | |
13262 | extern int have_extern_spec; | |
13263 | extern int used_extern_spec; | |
13264 | int doing_friend = 0; | |
a8f73d4b | 13265 | struct binding_level *bl; |
f444e36b | 13266 | tree current_function_parms; |
8d08fdba | 13267 | |
8d08fdba | 13268 | /* Sanity check. */ |
a1774733 | 13269 | my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160); |
8d08fdba MS |
13270 | my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161); |
13271 | ||
e92cc029 | 13272 | /* This should only be done once on the top most decl. */ |
8d08fdba MS |
13273 | if (have_extern_spec && !used_extern_spec) |
13274 | { | |
1f8f4a0b | 13275 | declspecs = tree_cons (NULL_TREE, get_identifier ("extern"), declspecs); |
8d08fdba MS |
13276 | used_extern_spec = 1; |
13277 | } | |
13278 | ||
a8f73d4b | 13279 | if (flags & SF_PRE_PARSED) |
8d08fdba MS |
13280 | { |
13281 | decl1 = declarator; | |
13282 | ||
8d08fdba MS |
13283 | fntype = TREE_TYPE (decl1); |
13284 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
13285 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
13286 | ||
cab1f180 ML |
13287 | /* ISO C++ 11.4/5. A friend function defined in a class is in |
13288 | the (lexical) scope of the class in which it is defined. */ | |
8d08fdba MS |
13289 | if (!ctype && DECL_FRIEND_P (decl1)) |
13290 | { | |
4f1c5b7d | 13291 | ctype = DECL_FRIEND_CONTEXT (decl1); |
8d08fdba MS |
13292 | |
13293 | /* CTYPE could be null here if we're dealing with a template; | |
13294 | for example, `inline friend float foo()' inside a template | |
13295 | will have no CTYPE set. */ | |
13296 | if (ctype && TREE_CODE (ctype) != RECORD_TYPE) | |
13297 | ctype = NULL_TREE; | |
13298 | else | |
13299 | doing_friend = 1; | |
13300 | } | |
13301 | ||
5566b478 MS |
13302 | last_function_parms = DECL_ARGUMENTS (decl1); |
13303 | last_function_parm_tags = NULL_TREE; | |
8d08fdba MS |
13304 | } |
13305 | else | |
13306 | { | |
c11b6f21 | 13307 | decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE); |
8d08fdba MS |
13308 | /* If the declarator is not suitable for a function definition, |
13309 | cause a syntax error. */ | |
13310 | if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0; | |
13311 | ||
13312 | fntype = TREE_TYPE (decl1); | |
13313 | ||
13314 | restype = TREE_TYPE (fntype); | |
7ddedda4 | 13315 | if (CLASS_TYPE_P (restype) && !CLASSTYPE_GOT_SEMICOLON (restype)) |
8d08fdba | 13316 | { |
8251199e | 13317 | cp_error ("semicolon missing after declaration of `%#T'", restype); |
051e6fd7 | 13318 | shadow_tag (build_tree_list (NULL_TREE, restype)); |
8d08fdba MS |
13319 | CLASSTYPE_GOT_SEMICOLON (restype) = 1; |
13320 | if (TREE_CODE (fntype) == FUNCTION_TYPE) | |
13321 | fntype = build_function_type (integer_type_node, | |
13322 | TYPE_ARG_TYPES (fntype)); | |
13323 | else | |
13324 | fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)), | |
13325 | integer_type_node, | |
13326 | TYPE_ARG_TYPES (fntype)); | |
13327 | TREE_TYPE (decl1) = fntype; | |
13328 | } | |
13329 | ||
13330 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
13331 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
35680744 | 13332 | else if (DECL_MAIN_P (decl1)) |
8d08fdba MS |
13333 | { |
13334 | /* If this doesn't return integer_type, complain. */ | |
13335 | if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node) | |
13336 | { | |
a28e3c7f | 13337 | if (pedantic || warn_return_type) |
8251199e | 13338 | pedwarn ("return type for `main' changed to `int'"); |
8d08fdba MS |
13339 | TREE_TYPE (decl1) = fntype = default_function_type; |
13340 | } | |
8d08fdba MS |
13341 | } |
13342 | } | |
68642fb6 | 13343 | |
b35d4555 MM |
13344 | /* Sometimes we don't notice that a function is a static member, and |
13345 | build a METHOD_TYPE for it. Fix that up now. */ | |
13346 | if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1) | |
13347 | && TREE_CODE (TREE_TYPE (decl1)) == METHOD_TYPE) | |
13348 | { | |
3afb32a4 | 13349 | revert_static_member_fn (decl1); |
b35d4555 MM |
13350 | last_function_parms = TREE_CHAIN (last_function_parms); |
13351 | ctype = NULL_TREE; | |
13352 | } | |
8d08fdba MS |
13353 | |
13354 | /* Warn if function was previously implicitly declared | |
13355 | (but not if we warned then). */ | |
13356 | if (! warn_implicit | |
13357 | && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE) | |
8251199e | 13358 | cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1))); |
8d08fdba | 13359 | |
f181d4ae MM |
13360 | /* Set up current_class_type, and enter the scope of the class, if |
13361 | appropriate. */ | |
13362 | if (ctype) | |
13363 | push_nested_class (ctype, 1); | |
13364 | else if (DECL_STATIC_FUNCTION_P (decl1)) | |
13365 | push_nested_class (DECL_CONTEXT (decl1), 2); | |
13366 | ||
13367 | /* Now that we have entered the scope of the class, we must restore | |
13368 | the bindings for any template parameters surrounding DECL1, if it | |
13369 | is an inline member template. (Order is important; consider the | |
13370 | case where a template parameter has the same name as a field of | |
13371 | the class.) It is not until after this point that | |
13372 | PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */ | |
a8f73d4b | 13373 | if (flags & SF_INCLASS_INLINE) |
f181d4ae MM |
13374 | maybe_begin_member_template_processing (decl1); |
13375 | ||
56cb9733 | 13376 | /* Effective C++ rule 15. */ |
9188c363 | 13377 | if (warn_ecpp |
596ea4e5 | 13378 | && DECL_OVERLOADED_OPERATOR_P (decl1) == NOP_EXPR |
9188c363 MM |
13379 | && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE) |
13380 | cp_warning ("`operator=' should return a reference to `*this'"); | |
13381 | ||
13382 | /* Make the init_value nonzero so pushdecl knows this is not tentative. | |
13383 | error_mark_node is replaced below (in poplevel) with the BLOCK. */ | |
b35d4555 MM |
13384 | if (!DECL_INITIAL (decl1)) |
13385 | DECL_INITIAL (decl1) = error_mark_node; | |
9188c363 MM |
13386 | |
13387 | #ifdef SET_DEFAULT_DECL_ATTRIBUTES | |
13388 | SET_DEFAULT_DECL_ATTRIBUTES (decl1, attrs); | |
13389 | #endif | |
68642fb6 | 13390 | |
9188c363 MM |
13391 | /* This function exists in static storage. |
13392 | (This does not mean `static' in the C sense!) */ | |
13393 | TREE_STATIC (decl1) = 1; | |
13394 | ||
13395 | /* We must call push_template_decl after current_class_type is set | |
13396 | up. (If we are processing inline definitions after exiting a | |
13397 | class scope, current_class_type will be NULL_TREE until set above | |
13398 | by push_nested_class.) */ | |
13399 | if (processing_template_decl) | |
13400 | decl1 = push_template_decl (decl1); | |
13401 | ||
f181d4ae | 13402 | /* We are now in the scope of the function being defined. */ |
8d08fdba | 13403 | current_function_decl = decl1; |
f181d4ae | 13404 | |
5566b478 MS |
13405 | /* Save the parm names or decls from this function's declarator |
13406 | where store_parm_decls will find them. */ | |
13407 | current_function_parms = last_function_parms; | |
13408 | current_function_parm_tags = last_function_parm_tags; | |
8d08fdba | 13409 | |
a8f73d4b MM |
13410 | /* Make sure the parameter and return types are reasonable. When |
13411 | you declare a function, these types can be incomplete, but they | |
13412 | must be complete when you define the function. */ | |
5156628f | 13413 | if (! processing_template_decl) |
f444e36b | 13414 | check_function_type (decl1, current_function_parms); |
f181d4ae | 13415 | |
a8f73d4b MM |
13416 | /* Build the return declaration for the function. */ |
13417 | restype = TREE_TYPE (fntype); | |
13418 | if (!processing_template_decl) | |
13419 | { | |
13420 | if (!DECL_RESULT (decl1)) | |
5566b478 | 13421 | { |
5566b478 | 13422 | DECL_RESULT (decl1) |
a8f73d4b | 13423 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype)); |
68642fb6 UD |
13424 | c_apply_type_quals_to_decl (CP_TYPE_QUALS (restype), |
13425 | DECL_RESULT (decl1)); | |
5566b478 | 13426 | } |
5566b478 | 13427 | } |
a8f73d4b MM |
13428 | else |
13429 | /* Just use `void'. Nobody will ever look at this anyhow. */ | |
13430 | DECL_RESULT (decl1) = build_decl (RESULT_DECL, 0, void_type_node); | |
13431 | ||
13432 | /* Initialize RTL machinery. We cannot do this until | |
13433 | CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this | |
13434 | even when processing a template; this is how we get | |
c00996a3 JM |
13435 | CFUN set up, and our per-function variables initialized. |
13436 | FIXME factor out the non-RTL stuff. */ | |
a8f73d4b MM |
13437 | bl = current_binding_level; |
13438 | init_function_start (decl1, input_filename, lineno); | |
13439 | current_binding_level = bl; | |
a8f73d4b MM |
13440 | |
13441 | /* Even though we're inside a function body, we still don't want to | |
13442 | call expand_expr to calculate the size of a variable-sized array. | |
13443 | We haven't necessarily assigned RTL to all variables yet, so it's | |
13444 | not safe to try to expand expressions involving them. */ | |
13445 | immediate_size_expand = 0; | |
01d939e8 | 13446 | cfun->x_dont_save_pending_sizes_p = 1; |
a8f73d4b | 13447 | |
f444e36b MM |
13448 | /* Start the statement-tree, start the tree now. */ |
13449 | begin_stmt_tree (&DECL_SAVED_TREE (decl1)); | |
6f80451c | 13450 | |
a8f73d4b | 13451 | /* Let the user know we're compiling this function. */ |
ea11ca7e | 13452 | announce_function (decl1); |
b7484fbe | 13453 | |
878cd289 MS |
13454 | /* Record the decl so that the function name is defined. |
13455 | If we already have a decl for this name, and it is a FUNCTION_DECL, | |
13456 | use the old decl. */ | |
a8f73d4b | 13457 | if (!processing_template_decl && !(flags & SF_PRE_PARSED)) |
878cd289 | 13458 | { |
75650646 | 13459 | /* A specialization is not used to guide overload resolution. */ |
2228d450 | 13460 | if (!DECL_TEMPLATE_SPECIALIZATION (decl1) |
959d8796 | 13461 | && ! DECL_FUNCTION_MEMBER_P (decl1)) |
75650646 | 13462 | decl1 = pushdecl (decl1); |
2c73f9f5 | 13463 | else |
b7698cf0 JM |
13464 | { |
13465 | /* We need to set the DECL_CONTEXT. */ | |
13466 | if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1)) | |
13467 | DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1)); | |
13468 | /* And make sure we have enough default args. */ | |
13469 | check_default_args (decl1); | |
13470 | } | |
878cd289 MS |
13471 | fntype = TREE_TYPE (decl1); |
13472 | } | |
5566b478 | 13473 | |
a8f73d4b | 13474 | /* Reset these in case the call to pushdecl changed them. */ |
5566b478 | 13475 | current_function_decl = decl1; |
01d939e8 | 13476 | cfun->decl = decl1; |
878cd289 | 13477 | |
78c120b5 MM |
13478 | /* If we are (erroneously) defining a function that we have already |
13479 | defined before, wipe out what we knew before. */ | |
5362b086 | 13480 | if (!DECL_PENDING_INLINE_P (decl1) |
78c120b5 MM |
13481 | && DECL_SAVED_FUNCTION_DATA (decl1)) |
13482 | { | |
13483 | free (DECL_SAVED_FUNCTION_DATA (decl1)); | |
13484 | DECL_SAVED_FUNCTION_DATA (decl1) = NULL; | |
13485 | } | |
b35d4555 | 13486 | |
f444e36b | 13487 | if (ctype && !doing_friend && !DECL_STATIC_FUNCTION_P (decl1)) |
b35d4555 MM |
13488 | { |
13489 | /* We know that this was set up by `grokclassfn'. We do not | |
13490 | wait until `store_parm_decls', since evil parse errors may | |
13491 | never get us to that point. Here we keep the consistency | |
13492 | between `current_class_type' and `current_class_ptr'. */ | |
13493 | tree t = DECL_ARGUMENTS (decl1); | |
68642fb6 UD |
13494 | |
13495 | my_friendly_assert (t != NULL_TREE && TREE_CODE (t) == PARM_DECL, | |
b35d4555 MM |
13496 | 162); |
13497 | my_friendly_assert (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE, | |
13498 | 19990811); | |
68642fb6 UD |
13499 | |
13500 | cp_function_chain->x_current_class_ref | |
b35d4555 MM |
13501 | = build_indirect_ref (t, NULL_PTR); |
13502 | cp_function_chain->x_current_class_ptr = t; | |
13503 | ||
018fc244 MM |
13504 | /* Constructors and destructors need to know whether they're "in |
13505 | charge" of initializing virtual base classes. */ | |
e0fff4b3 | 13506 | t = TREE_CHAIN (t); |
454fa7a7 | 13507 | if (DECL_HAS_IN_CHARGE_PARM_P (decl1)) |
e0fff4b3 JM |
13508 | { |
13509 | current_in_charge_parm = t; | |
13510 | t = TREE_CHAIN (t); | |
13511 | } | |
13512 | if (DECL_HAS_VTT_PARM_P (decl1)) | |
13513 | { | |
13514 | if (DECL_NAME (t) != vtt_parm_identifier) | |
13515 | abort (); | |
13516 | current_vtt_parm = t; | |
13517 | } | |
b35d4555 MM |
13518 | } |
13519 | ||
db5ae43f | 13520 | if (DECL_INTERFACE_KNOWN (decl1)) |
faae18ab | 13521 | { |
4f1c5b7d | 13522 | tree ctx = decl_function_context (decl1); |
86052cc3 | 13523 | |
faae18ab MS |
13524 | if (DECL_NOT_REALLY_EXTERN (decl1)) |
13525 | DECL_EXTERNAL (decl1) = 0; | |
86052cc3 | 13526 | |
79065db2 | 13527 | if (ctx != NULL_TREE && DECL_DECLARED_INLINE_P (ctx) |
86052cc3 JM |
13528 | && TREE_PUBLIC (ctx)) |
13529 | /* This is a function in a local class in an extern inline | |
13530 | function. */ | |
13531 | comdat_linkage (decl1); | |
faae18ab | 13532 | } |
8d08fdba MS |
13533 | /* If this function belongs to an interface, it is public. |
13534 | If it belongs to someone else's interface, it is also external. | |
1f901793 | 13535 | This only affects inlines and template instantiations. */ |
5566b478 MS |
13536 | else if (interface_unknown == 0 |
13537 | && (! DECL_TEMPLATE_INSTANTIATION (decl1) | |
d11ad92e | 13538 | || flag_alt_external_templates)) |
8d08fdba | 13539 | { |
79065db2 MM |
13540 | if (DECL_DECLARED_INLINE_P (decl1) |
13541 | || DECL_TEMPLATE_INSTANTIATION (decl1) | |
5156628f | 13542 | || processing_template_decl) |
1f901793 JM |
13543 | { |
13544 | DECL_EXTERNAL (decl1) | |
13545 | = (interface_only | |
79065db2 MM |
13546 | || (DECL_DECLARED_INLINE_P (decl1) |
13547 | && ! flag_implement_inlines | |
9c73ec84 | 13548 | && !DECL_VINDEX (decl1))); |
1f901793 JM |
13549 | |
13550 | /* For WIN32 we also want to put these in linkonce sections. */ | |
13551 | maybe_make_one_only (decl1); | |
13552 | } | |
db5ae43f | 13553 | else |
893de33c | 13554 | DECL_EXTERNAL (decl1) = 0; |
e8abc66f | 13555 | DECL_NOT_REALLY_EXTERN (decl1) = 0; |
db5ae43f | 13556 | DECL_INTERFACE_KNOWN (decl1) = 1; |
8d08fdba | 13557 | } |
c16c47fb JM |
13558 | else if (interface_unknown && interface_only |
13559 | && (! DECL_TEMPLATE_INSTANTIATION (decl1) | |
13560 | || flag_alt_external_templates)) | |
13561 | { | |
13562 | /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma | |
13563 | interface, we will have interface_only set but not | |
13564 | interface_known. In that case, we don't want to use the normal | |
13565 | heuristics because someone will supply a #pragma implementation | |
13566 | elsewhere, and deducing it here would produce a conflict. */ | |
13567 | comdat_linkage (decl1); | |
13568 | DECL_EXTERNAL (decl1) = 0; | |
13569 | DECL_INTERFACE_KNOWN (decl1) = 1; | |
13570 | DECL_DEFER_OUTPUT (decl1) = 1; | |
13571 | } | |
8d08fdba | 13572 | else |
a0a33927 MS |
13573 | { |
13574 | /* This is a definition, not a reference. | |
b7484fbe MS |
13575 | So clear DECL_EXTERNAL. */ |
13576 | DECL_EXTERNAL (decl1) = 0; | |
faae18ab | 13577 | |
79065db2 MM |
13578 | if ((DECL_DECLARED_INLINE_P (decl1) |
13579 | || DECL_TEMPLATE_INSTANTIATION (decl1)) | |
5566b478 MS |
13580 | && ! DECL_INTERFACE_KNOWN (decl1) |
13581 | /* Don't try to defer nested functions for now. */ | |
4f1c5b7d | 13582 | && ! decl_function_context (decl1)) |
878cd289 MS |
13583 | DECL_DEFER_OUTPUT (decl1) = 1; |
13584 | else | |
893de33c | 13585 | DECL_INTERFACE_KNOWN (decl1) = 1; |
db5ae43f | 13586 | } |
a9aedbc2 | 13587 | |
f444e36b MM |
13588 | pushlevel (0); |
13589 | current_binding_level->parm_flag = 1; | |
8d08fdba | 13590 | |
f30432d7 MS |
13591 | if (attrs) |
13592 | cplus_decl_attributes (decl1, NULL_TREE, attrs); | |
68642fb6 | 13593 | |
8d08fdba MS |
13594 | /* Promote the value to int before returning it. */ |
13595 | if (C_PROMOTING_INTEGER_TYPE_P (restype)) | |
5566b478 MS |
13596 | restype = type_promotes_to (restype); |
13597 | ||
8d08fdba | 13598 | if (DECL_RESULT (decl1) == NULL_TREE) |
f30432d7 MS |
13599 | { |
13600 | DECL_RESULT (decl1) | |
13601 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype)); | |
91063b51 MM |
13602 | TREE_READONLY (DECL_RESULT (decl1)) = CP_TYPE_CONST_P (restype); |
13603 | TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = CP_TYPE_VOLATILE_P (restype); | |
f30432d7 | 13604 | } |
8d08fdba | 13605 | |
5566b478 MS |
13606 | ++function_depth; |
13607 | ||
0d9eb3ba | 13608 | if (DECL_DESTRUCTOR_P (decl1)) |
46e8c075 MM |
13609 | { |
13610 | dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
13611 | DECL_CONTEXT (dtor_label) = current_function_decl; | |
13612 | } | |
8d08fdba | 13613 | |
0ba8a114 NS |
13614 | start_fname_decls (); |
13615 | ||
f444e36b MM |
13616 | store_parm_decls (current_function_parms); |
13617 | ||
8d08fdba MS |
13618 | return 1; |
13619 | } | |
13620 | \f | |
13621 | /* Store the parameter declarations into the current function declaration. | |
13622 | This is called after parsing the parameter declarations, before | |
13623 | digesting the body of the function. | |
13624 | ||
13625 | Also install to binding contour return value identifier, if any. */ | |
13626 | ||
f444e36b MM |
13627 | static void |
13628 | store_parm_decls (current_function_parms) | |
13629 | tree current_function_parms; | |
8d08fdba MS |
13630 | { |
13631 | register tree fndecl = current_function_decl; | |
13632 | register tree parm; | |
13633 | int parms_have_cleanups = 0; | |
eb66be0e | 13634 | tree cleanups = NULL_TREE; |
8d08fdba | 13635 | |
8d08fdba MS |
13636 | /* This is a list of types declared among parms in a prototype. */ |
13637 | tree parmtags = current_function_parm_tags; | |
13638 | ||
13639 | /* This is a chain of any other decls that came in among the parm | |
13640 | declarations. If a parm is declared with enum {foo, bar} x; | |
13641 | then CONST_DECLs for foo and bar are put here. */ | |
13642 | tree nonparms = NULL_TREE; | |
13643 | ||
b35d4555 | 13644 | if (current_function_parms) |
8d08fdba MS |
13645 | { |
13646 | /* This case is when the function was defined with an ANSI prototype. | |
13647 | The parms already have decls, so we need not do anything here | |
13648 | except record them as in effect | |
13649 | and complain if any redundant old-style parm decls were written. */ | |
13650 | ||
b35d4555 MM |
13651 | tree specparms = current_function_parms; |
13652 | tree next; | |
13653 | ||
f444e36b | 13654 | /* Must clear this because it might contain TYPE_DECLs declared |
b35d4555 | 13655 | at class level. */ |
f444e36b | 13656 | storedecls (NULL_TREE); |
8d08fdba | 13657 | |
f444e36b | 13658 | /* If we're doing semantic analysis, then we'll call pushdecl |
b35d4555 MM |
13659 | for each of these. We must do them in reverse order so that |
13660 | they end in the correct forward order. */ | |
f444e36b | 13661 | specparms = nreverse (specparms); |
5566b478 | 13662 | |
b35d4555 | 13663 | for (parm = specparms; parm; parm = next) |
8d08fdba MS |
13664 | { |
13665 | next = TREE_CHAIN (parm); | |
13666 | if (TREE_CODE (parm) == PARM_DECL) | |
13667 | { | |
f444e36b | 13668 | tree cleanup; |
fe1b3b96 | 13669 | |
f444e36b MM |
13670 | if (DECL_NAME (parm) == NULL_TREE |
13671 | || TREE_CODE (parm) != VOID_TYPE) | |
13672 | pushdecl (parm); | |
13673 | else | |
13674 | cp_error ("parameter `%D' declared void", parm); | |
eb66be0e | 13675 | |
5362b086 | 13676 | cleanup = (processing_template_decl |
f444e36b MM |
13677 | ? NULL_TREE |
13678 | : maybe_build_cleanup (parm)); | |
68642fb6 | 13679 | |
f444e36b MM |
13680 | if (cleanup) |
13681 | cleanups = tree_cons (parm, cleanup, cleanups); | |
8d08fdba MS |
13682 | } |
13683 | else | |
13684 | { | |
13685 | /* If we find an enum constant or a type tag, | |
13686 | put it aside for the moment. */ | |
13687 | TREE_CHAIN (parm) = NULL_TREE; | |
13688 | nonparms = chainon (nonparms, parm); | |
13689 | } | |
13690 | } | |
13691 | ||
f444e36b MM |
13692 | /* Get the decls in their original chain order and record in the |
13693 | function. This is all and only the PARM_DECLs that were | |
13694 | pushed into scope by the loop above. */ | |
13695 | DECL_ARGUMENTS (fndecl) = getdecls (); | |
13696 | storetags (chainon (parmtags, gettags ())); | |
8d08fdba MS |
13697 | } |
13698 | else | |
13699 | DECL_ARGUMENTS (fndecl) = NULL_TREE; | |
13700 | ||
13701 | /* Now store the final chain of decls for the arguments | |
13702 | as the decl-chain of the current lexical scope. | |
13703 | Put the enumerators in as well, at the front so that | |
13704 | DECL_ARGUMENTS is not modified. */ | |
f444e36b | 13705 | storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl))); |
eb448459 | 13706 | |
eb66be0e MS |
13707 | /* Now that we have initialized the parms, we can start their |
13708 | cleanups. We cannot do this before, since expand_decl_cleanup | |
13709 | should not be called before the parm can be used. */ | |
fe1b3b96 MM |
13710 | while (cleanups) |
13711 | { | |
68642fb6 | 13712 | finish_decl_cleanup (TREE_PURPOSE (cleanups), |
fe1b3b96 MM |
13713 | TREE_VALUE (cleanups)); |
13714 | cleanups = TREE_CHAIN (cleanups); | |
13715 | } | |
eb66be0e | 13716 | |
8d08fdba | 13717 | /* Create a binding contour which can be used to catch |
f444e36b | 13718 | cleanup-generated temporaries. */ |
8d08fdba | 13719 | if (parms_have_cleanups) |
f444e36b | 13720 | pushlevel (0); |
8d08fdba | 13721 | |
b35d4555 | 13722 | /* Do the starting of the exception specifications, if we have any. */ |
68642fb6 | 13723 | if (flag_exceptions && !processing_template_decl |
1660cb3a | 13724 | && flag_enforce_eh_specs |
b35d4555 | 13725 | && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl))) |
52a11cbf | 13726 | current_eh_spec_block = begin_eh_spec_block (); |
8d08fdba MS |
13727 | } |
13728 | ||
8d08fdba | 13729 | \f |
59026e79 MM |
13730 | /* We have finished doing semantic analysis on DECL, but have not yet |
13731 | generated RTL for its body. Save away our current state, so that | |
13732 | when we want to generate RTL later we know what to do. */ | |
13733 | ||
13734 | static void | |
13735 | save_function_data (decl) | |
13736 | tree decl; | |
13737 | { | |
ae499cce | 13738 | struct cp_language_function *f; |
59026e79 MM |
13739 | |
13740 | /* Save the language-specific per-function data so that we can | |
13741 | get it back when we really expand this function. */ | |
13742 | my_friendly_assert (!DECL_PENDING_INLINE_P (decl), | |
13743 | 19990908); | |
68642fb6 | 13744 | |
59026e79 | 13745 | /* Make a copy. */ |
ae499cce MM |
13746 | f = ((struct cp_language_function *) |
13747 | xmalloc (sizeof (struct cp_language_function))); | |
4e135bdd | 13748 | memcpy (f, cp_function_chain, sizeof (struct cp_language_function)); |
59026e79 MM |
13749 | DECL_SAVED_FUNCTION_DATA (decl) = f; |
13750 | ||
13751 | /* Clear out the bits we don't need. */ | |
ae499cce MM |
13752 | f->base.x_stmt_tree.x_last_stmt = NULL_TREE; |
13753 | f->base.x_stmt_tree.x_last_expr_type = NULL_TREE; | |
59026e79 MM |
13754 | f->x_named_label_uses = NULL; |
13755 | f->bindings = NULL; | |
8e4ce833 | 13756 | f->x_local_names = NULL; |
59026e79 MM |
13757 | |
13758 | /* When we get back here again, we will be expanding. */ | |
13759 | f->x_expanding_p = 1; | |
914653a2 MM |
13760 | |
13761 | /* If we've already decided that we cannot inline this function, we | |
13762 | must remember that fact when we actually go to expand the | |
13763 | function. */ | |
13764 | f->cannot_inline = current_function_cannot_inline; | |
59026e79 MM |
13765 | } |
13766 | ||
efee38a9 MM |
13767 | /* At the end of every constructor we generate to code to return |
13768 | `this'. Do that now. */ | |
13769 | ||
13770 | static void | |
13771 | finish_constructor_body () | |
13772 | { | |
13773 | /* Any return from a constructor will end up here. */ | |
3dbc07b6 | 13774 | if (ctor_label) |
ae499cce | 13775 | add_stmt (build_stmt (LABEL_STMT, ctor_label)); |
efee38a9 MM |
13776 | |
13777 | /* Clear CTOR_LABEL so that finish_return_stmt knows to really | |
13778 | generate the return, rather than a goto to CTOR_LABEL. */ | |
13779 | ctor_label = NULL_TREE; | |
13780 | /* In check_return_expr we translate an empty return from a | |
13781 | constructor to a return of `this'. */ | |
13782 | finish_return_stmt (NULL_TREE); | |
46e8c075 | 13783 | /* Mark the end of the constructor. */ |
ae499cce | 13784 | add_stmt (build_stmt (CTOR_STMT)); |
efee38a9 MM |
13785 | } |
13786 | ||
9bfadf57 MM |
13787 | /* At the end of every destructor we generate code to restore virtual |
13788 | function tables to the values desired by base classes and to call | |
efee38a9 | 13789 | to base class destructors. Do that now. */ |
9bfadf57 MM |
13790 | |
13791 | static void | |
13792 | finish_destructor_body () | |
13793 | { | |
13794 | tree compound_stmt; | |
9bfadf57 MM |
13795 | tree exprstmt; |
13796 | ||
13797 | /* Create a block to contain all the extra code. */ | |
13798 | compound_stmt = begin_compound_stmt (/*has_no_scope=*/0); | |
13799 | ||
efee38a9 | 13800 | /* Any return from a destructor will end up here. */ |
ae499cce | 13801 | add_stmt (build_stmt (LABEL_STMT, dtor_label)); |
efee38a9 | 13802 | |
9bfadf57 MM |
13803 | /* Generate the code to call destructor on base class. If this |
13804 | destructor belongs to a class with virtual functions, then set | |
13805 | the virtual function table pointer to represent the type of our | |
13806 | base class. */ | |
13807 | ||
13808 | /* This side-effect makes call to `build_delete' generate the code | |
13809 | we have to have at the end of this destructor. `build_delete' | |
13810 | will set the flag again. */ | |
13811 | TYPE_HAS_DESTRUCTOR (current_class_type) = 0; | |
13812 | ||
9bfadf57 | 13813 | exprstmt = build_delete (current_class_type, |
68642fb6 | 13814 | current_class_ref, |
86f45d2c | 13815 | sfk_base_destructor, |
68642fb6 | 13816 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, |
9bfadf57 MM |
13817 | 0); |
13818 | ||
13819 | if (exprstmt != error_mark_node | |
13820 | && (TREE_CODE (exprstmt) != NOP_EXPR | |
13821 | || TREE_OPERAND (exprstmt, 0) != integer_zero_node | |
13822 | || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))) | |
13823 | { | |
9bfadf57 MM |
13824 | if (exprstmt != void_zero_node) |
13825 | /* Don't call `expand_expr_stmt' if we're not going to do | |
13826 | anything, since -Wall will give a diagnostic. */ | |
13827 | finish_expr_stmt (exprstmt); | |
13828 | ||
efee38a9 | 13829 | /* Run destructors for all virtual baseclasses. */ |
9bfadf57 MM |
13830 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) |
13831 | { | |
a55583e9 MM |
13832 | tree vbases; |
13833 | tree if_stmt; | |
13834 | ||
13835 | if_stmt = begin_if_stmt (); | |
9bfadf57 | 13836 | finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node, |
68642fb6 | 13837 | current_in_charge_parm, |
9bfadf57 MM |
13838 | integer_two_node), |
13839 | if_stmt); | |
13840 | ||
a55583e9 MM |
13841 | vbases = CLASSTYPE_VBASECLASSES (current_class_type); |
13842 | /* The CLASSTYPE_VBASECLASSES list is in initialization | |
13843 | order, so we have to march through it in reverse order. */ | |
13844 | for (vbases = nreverse (copy_list (vbases)); | |
13845 | vbases; | |
13846 | vbases = TREE_CHAIN (vbases)) | |
9bfadf57 | 13847 | { |
a55583e9 | 13848 | tree vbase = TREE_VALUE (vbases); |
9f724b6a | 13849 | tree base_type = BINFO_TYPE (vbase); |
a55583e9 | 13850 | |
9f724b6a | 13851 | if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (base_type)) |
9bfadf57 | 13852 | { |
9f724b6a NS |
13853 | tree base_ptr_type = build_pointer_type (base_type); |
13854 | tree expr = current_class_ptr; | |
13855 | ||
13856 | /* Convert to the basetype here, as we know the layout is | |
13857 | fixed. What is more, if we let build_method_call do it, | |
13858 | it will use the vtable, which may have been clobbered | |
13859 | by the deletion of our primary base. */ | |
13860 | ||
13861 | expr = build1 (NOP_EXPR, base_ptr_type, expr); | |
13862 | expr = build (PLUS_EXPR, base_ptr_type, expr, | |
13863 | BINFO_OFFSET (vbase)); | |
13864 | expr = build_indirect_ref (expr, NULL); | |
13865 | expr = build_method_call (expr, base_dtor_identifier, | |
13866 | NULL_TREE, vbase, | |
13867 | LOOKUP_NORMAL); | |
13868 | finish_expr_stmt (expr); | |
9bfadf57 | 13869 | } |
9bfadf57 MM |
13870 | } |
13871 | ||
13872 | finish_then_clause (if_stmt); | |
13873 | finish_if_stmt (); | |
13874 | } | |
13875 | } | |
68642fb6 | 13876 | |
52682a1b MM |
13877 | /* In a virtual destructor, we must call delete. */ |
13878 | if (DECL_VIRTUAL_P (current_function_decl)) | |
13879 | { | |
13880 | tree if_stmt; | |
13881 | tree virtual_size = c_sizeof (current_class_type); | |
68642fb6 | 13882 | |
52682a1b | 13883 | /* [class.dtor] |
68642fb6 | 13884 | |
52682a1b MM |
13885 | At the point of definition of a virtual destructor (including |
13886 | an implicit definition), non-placement operator delete shall | |
13887 | be looked up in the scope of the destructor's class and if | |
13888 | found shall be accessible and unambiguous. */ | |
13889 | exprstmt = build_op_delete_call | |
13890 | (DELETE_EXPR, current_class_ptr, virtual_size, | |
13891 | LOOKUP_NORMAL | LOOKUP_SPECULATIVELY, NULL_TREE); | |
298d6f60 | 13892 | |
52682a1b MM |
13893 | if_stmt = begin_if_stmt (); |
13894 | finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node, | |
13895 | current_in_charge_parm, | |
13896 | integer_one_node), | |
13897 | if_stmt); | |
13898 | finish_expr_stmt (exprstmt); | |
13899 | finish_then_clause (if_stmt); | |
13900 | finish_if_stmt (); | |
13901 | } | |
9bfadf57 MM |
13902 | |
13903 | /* Close the block we started above. */ | |
13904 | finish_compound_stmt (/*has_no_scope=*/0, compound_stmt); | |
13905 | } | |
13906 | ||
8d08fdba MS |
13907 | /* Finish up a function declaration and compile that function |
13908 | all the way to assembler language output. The free the storage | |
13909 | for the function definition. | |
13910 | ||
68642fb6 UD |
13911 | FLAGS is a bitwise or of the following values: |
13912 | 1 - CALL_POPLEVEL | |
f181d4ae MM |
13913 | An extra call to poplevel (and expand_end_bindings) must be |
13914 | made to take care of the binding contour for the base | |
13915 | initializers. This is only relevant for constructors. | |
13916 | 2 - INCLASS_INLINE | |
13917 | We just finished processing the body of an in-class inline | |
13918 | function definition. (This processing will have taken place | |
87e3dbc9 | 13919 | after the class definition is complete.) */ |
8d08fdba | 13920 | |
4d6abc1c | 13921 | tree |
0acf7199 | 13922 | finish_function (flags) |
f181d4ae | 13923 | int flags; |
8d08fdba MS |
13924 | { |
13925 | register tree fndecl = current_function_decl; | |
13926 | tree fntype, ctype = NULL_TREE; | |
f181d4ae MM |
13927 | int call_poplevel = (flags & 1) != 0; |
13928 | int inclass_inline = (flags & 2) != 0; | |
87e3dbc9 | 13929 | int nested; |
8d08fdba MS |
13930 | |
13931 | /* When we get some parse errors, we can end up without a | |
13932 | current_function_decl, so cope. */ | |
13933 | if (fndecl == NULL_TREE) | |
4d6abc1c | 13934 | return error_mark_node; |
8d08fdba | 13935 | |
87e3dbc9 | 13936 | nested = function_depth > 1; |
8d08fdba MS |
13937 | fntype = TREE_TYPE (fndecl); |
13938 | ||
9bfadf57 MM |
13939 | /* TREE_READONLY (fndecl) = 1; |
13940 | This caused &foo to be of type ptr-to-const-function | |
13941 | which then got a warning when stored in a ptr-to-function variable. */ | |
8d08fdba | 13942 | |
f444e36b | 13943 | my_friendly_assert (building_stmt_tree (), 20000911); |
8d08fdba | 13944 | |
0ba8a114 NS |
13945 | finish_fname_decls (); |
13946 | ||
db9b2174 MM |
13947 | /* For a cloned function, we've already got all the code we need; |
13948 | there's no need to add any extra bits. */ | |
f444e36b | 13949 | if (!DECL_CLONED_FUNCTION_P (fndecl)) |
8d08fdba | 13950 | { |
efee38a9 MM |
13951 | if (DECL_CONSTRUCTOR_P (fndecl)) |
13952 | { | |
13953 | finish_constructor_body (); | |
13954 | if (call_poplevel) | |
13955 | do_poplevel (); | |
13956 | } | |
9bfadf57 MM |
13957 | else if (DECL_DESTRUCTOR_P (fndecl) && !processing_template_decl) |
13958 | finish_destructor_body (); | |
efee38a9 MM |
13959 | else if (DECL_MAIN_P (fndecl)) |
13960 | { | |
13961 | /* Make it so that `main' always returns 0 by default. */ | |
13962 | #ifdef VMS | |
13963 | finish_return_stmt (integer_one_node); | |
13964 | #else | |
13965 | finish_return_stmt (integer_zero_node); | |
13966 | #endif | |
13967 | } | |
87e3dbc9 | 13968 | |
b35d4555 MM |
13969 | /* Finish dealing with exception specifiers. */ |
13970 | if (flag_exceptions && !processing_template_decl | |
1660cb3a | 13971 | && flag_enforce_eh_specs |
b35d4555 | 13972 | && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl))) |
52a11cbf RH |
13973 | finish_eh_spec_block (TYPE_RAISES_EXCEPTIONS |
13974 | (TREE_TYPE (current_function_decl)), | |
13975 | current_eh_spec_block); | |
5566b478 | 13976 | } |
68642fb6 | 13977 | |
558475f0 | 13978 | /* If we're saving up tree structure, tie off the function now. */ |
f444e36b | 13979 | finish_stmt_tree (&DECL_SAVED_TREE (fndecl)); |
8d2733ca | 13980 | |
8d08fdba MS |
13981 | /* This must come after expand_function_end because cleanups might |
13982 | have declarations (from inline functions) that need to go into | |
13983 | this function's blocks. */ | |
f444e36b MM |
13984 | if (current_binding_level->parm_flag != 1) |
13985 | my_friendly_abort (122); | |
13986 | poplevel (1, 0, 1); | |
8d08fdba | 13987 | |
a8f73d4b | 13988 | /* Remember that we were in class scope. */ |
db5ae43f | 13989 | if (current_class_name) |
a8f73d4b | 13990 | ctype = current_class_type; |
db5ae43f | 13991 | |
1caa11d3 MM |
13992 | /* Must mark the RESULT_DECL as being in this function. */ |
13993 | DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl; | |
13994 | ||
13995 | /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point | |
13996 | to the FUNCTION_DECL node itself. */ | |
13997 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
13998 | ||
59026e79 | 13999 | /* Save away current state, if appropriate. */ |
f444e36b | 14000 | if (!processing_template_decl) |
59026e79 MM |
14001 | save_function_data (fndecl); |
14002 | ||
95fabfd3 MM |
14003 | /* If this function calls `setjmp' it cannot be inlined. When |
14004 | `longjmp' is called it is not guaranteed to restore the value of | |
14005 | local variables that have been modified since the call to | |
14006 | `setjmp'. So, if were to inline this function into some caller | |
14007 | `c', then when we `longjmp', we might not restore all variables | |
14008 | in `c'. (It might seem, at first blush, that there's no way for | |
14009 | this function to modify local variables in `c', but their | |
14010 | addresses may have been stored somewhere accessible to this | |
14011 | function.) */ | |
f444e36b | 14012 | if (!processing_template_decl && calls_setjmp_p (fndecl)) |
95fabfd3 MM |
14013 | DECL_UNINLINABLE (fndecl) = 1; |
14014 | ||
f444e36b MM |
14015 | /* Clear out memory we no longer need. */ |
14016 | free_after_parsing (cfun); | |
14017 | /* Since we never call rest_of_compilation, we never clear | |
14018 | CFUN. Do so explicitly. */ | |
14019 | free_after_compilation (cfun); | |
14020 | cfun = NULL; | |
a8f73d4b MM |
14021 | |
14022 | /* If this is a in-class inline definition, we may have to pop the | |
14023 | bindings for the template parameters that we added in | |
14024 | maybe_begin_member_template_processing when start_function was | |
14025 | called. */ | |
14026 | if (inclass_inline) | |
14027 | maybe_end_member_template_processing (); | |
14028 | ||
14029 | /* Leave the scope of the class. */ | |
14030 | if (ctype) | |
14031 | pop_nested_class (); | |
5566b478 MS |
14032 | |
14033 | --function_depth; | |
8d08fdba | 14034 | |
4d6abc1c | 14035 | /* Clean up. */ |
28cbf42c | 14036 | if (! nested) |
1f8f4a0b MM |
14037 | /* Let the error reporting routines know that we're outside a |
14038 | function. For a nested function, this value is used in | |
14039 | pop_cp_function_context and then reset via pop_function_context. */ | |
14040 | current_function_decl = NULL_TREE; | |
4d6abc1c MM |
14041 | |
14042 | return fndecl; | |
8d08fdba MS |
14043 | } |
14044 | \f | |
14045 | /* Create the FUNCTION_DECL for a function definition. | |
8d08fdba MS |
14046 | DECLSPECS and DECLARATOR are the parts of the declaration; |
14047 | they describe the return type and the name of the function, | |
14048 | but twisted together in a fashion that parallels the syntax of C. | |
14049 | ||
14050 | This function creates a binding context for the function body | |
14051 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
14052 | ||
14053 | Returns a FUNCTION_DECL on success. | |
14054 | ||
14055 | If the DECLARATOR is not suitable for a function (it defines a datum | |
14056 | instead), we return 0, which tells yyparse to report a parse error. | |
14057 | ||
14058 | May return void_type_node indicating that this method is actually | |
14059 | a friend. See grokfield for more details. | |
14060 | ||
14061 | Came here with a `.pushlevel' . | |
14062 | ||
14063 | DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING | |
14064 | CHANGES TO CODE IN `grokfield'. */ | |
e92cc029 | 14065 | |
8d08fdba | 14066 | tree |
acf82af2 JM |
14067 | start_method (declspecs, declarator, attrlist) |
14068 | tree declarator, declspecs, attrlist; | |
8d08fdba | 14069 | { |
c11b6f21 | 14070 | tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0, |
acf82af2 | 14071 | attrlist); |
8d08fdba MS |
14072 | |
14073 | /* Something too ugly to handle. */ | |
14074 | if (fndecl == NULL_TREE) | |
14075 | return NULL_TREE; | |
14076 | ||
14077 | /* Pass friends other than inline friend functions back. */ | |
a1774733 | 14078 | if (fndecl == void_type_node) |
8d08fdba MS |
14079 | return fndecl; |
14080 | ||
14081 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
14082 | /* Not a function, tell parser to report parse error. */ | |
14083 | return NULL_TREE; | |
14084 | ||
8d08fdba MS |
14085 | if (DECL_IN_AGGR_P (fndecl)) |
14086 | { | |
14087 | if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type) | |
14088 | { | |
68642fb6 | 14089 | if (DECL_CONTEXT (fndecl) |
2c73f9f5 | 14090 | && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL) |
2ae7bada NS |
14091 | cp_error ("`%D' is already defined in class `%T'", fndecl, |
14092 | DECL_CONTEXT (fndecl)); | |
8d08fdba MS |
14093 | } |
14094 | return void_type_node; | |
14095 | } | |
14096 | ||
f3400fe2 JM |
14097 | check_template_shadow (fndecl); |
14098 | ||
79065db2 | 14099 | DECL_DECLARED_INLINE_P (fndecl) = 1; |
faae18ab | 14100 | |
8926095f | 14101 | if (flag_default_inline) |
8d08fdba MS |
14102 | DECL_INLINE (fndecl) = 1; |
14103 | ||
36a117a5 MM |
14104 | /* We process method specializations in finish_struct_1. */ |
14105 | if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl)) | |
3ac3d9ea | 14106 | fndecl = push_template_decl (fndecl); |
a0a33927 | 14107 | |
8d08fdba MS |
14108 | if (! DECL_FRIEND_P (fndecl)) |
14109 | { | |
8d08fdba MS |
14110 | if (TREE_CHAIN (fndecl)) |
14111 | { | |
14112 | fndecl = copy_node (fndecl); | |
14113 | TREE_CHAIN (fndecl) = NULL_TREE; | |
14114 | } | |
14115 | ||
14116 | if (DECL_CONSTRUCTOR_P (fndecl)) | |
a0a33927 MS |
14117 | { |
14118 | if (! grok_ctor_properties (current_class_type, fndecl)) | |
14119 | return void_type_node; | |
14120 | } | |
8d08fdba MS |
14121 | else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl))) |
14122 | grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0); | |
14123 | } | |
14124 | ||
cd9f6678 | 14125 | cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0); |
8d08fdba MS |
14126 | |
14127 | /* Make a place for the parms */ | |
14128 | pushlevel (0); | |
14129 | current_binding_level->parm_flag = 1; | |
68642fb6 | 14130 | |
8d08fdba MS |
14131 | DECL_IN_AGGR_P (fndecl) = 1; |
14132 | return fndecl; | |
14133 | } | |
14134 | ||
14135 | /* Go through the motions of finishing a function definition. | |
14136 | We don't compile this method until after the whole class has | |
14137 | been processed. | |
14138 | ||
14139 | FINISH_METHOD must return something that looks as though it | |
14140 | came from GROKFIELD (since we are defining a method, after all). | |
14141 | ||
14142 | This is called after parsing the body of the function definition. | |
14143 | STMTS is the chain of statements that makes up the function body. | |
14144 | ||
14145 | DECL is the ..._DECL that `start_method' provided. */ | |
14146 | ||
14147 | tree | |
14148 | finish_method (decl) | |
14149 | tree decl; | |
14150 | { | |
14151 | register tree fndecl = decl; | |
14152 | tree old_initial; | |
8d08fdba MS |
14153 | |
14154 | register tree link; | |
14155 | ||
a1774733 | 14156 | if (decl == void_type_node) |
8d08fdba MS |
14157 | return decl; |
14158 | ||
14159 | old_initial = DECL_INITIAL (fndecl); | |
14160 | ||
14161 | /* Undo the level for the parms (from start_method). | |
14162 | This is like poplevel, but it causes nothing to be | |
14163 | saved. Saving information here confuses symbol-table | |
14164 | output routines. Besides, this information will | |
14165 | be correctly output when this method is actually | |
14166 | compiled. */ | |
14167 | ||
14168 | /* Clear out the meanings of the local variables of this level; | |
14169 | also record in each decl which block it belongs to. */ | |
14170 | ||
14171 | for (link = current_binding_level->names; link; link = TREE_CHAIN (link)) | |
14172 | { | |
14173 | if (DECL_NAME (link) != NULL_TREE) | |
d8f8dca1 | 14174 | pop_binding (DECL_NAME (link), link); |
8d08fdba MS |
14175 | my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163); |
14176 | DECL_CONTEXT (link) = NULL_TREE; | |
14177 | } | |
14178 | ||
8d08fdba MS |
14179 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, |
14180 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
14181 | current_binding_level->parm_flag, | |
5566b478 | 14182 | current_binding_level->keep); |
8d08fdba MS |
14183 | |
14184 | poplevel (0, 0, 0); | |
14185 | ||
14186 | DECL_INITIAL (fndecl) = old_initial; | |
14187 | ||
14188 | /* We used to check if the context of FNDECL was different from | |
14189 | current_class_type as another way to get inside here. This didn't work | |
14190 | for String.cc in libg++. */ | |
14191 | if (DECL_FRIEND_P (fndecl)) | |
14192 | { | |
14193 | CLASSTYPE_INLINE_FRIENDS (current_class_type) | |
14194 | = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type)); | |
14195 | decl = void_type_node; | |
14196 | } | |
14197 | ||
14198 | return decl; | |
14199 | } | |
14200 | \f | |
14201 | /* Called when a new struct TYPE is defined. | |
14202 | If this structure or union completes the type of any previous | |
14203 | variable declaration, lay it out and output its rtl. */ | |
14204 | ||
14205 | void | |
14206 | hack_incomplete_structures (type) | |
14207 | tree type; | |
14208 | { | |
f30432d7 | 14209 | tree *list; |
70adf8a9 | 14210 | struct binding_level *level; |
8d08fdba MS |
14211 | |
14212 | if (!type) /* Don't do this for class templates. */ | |
14213 | return; | |
14214 | ||
70adf8a9 JM |
14215 | if (namespace_bindings_p ()) |
14216 | { | |
14217 | level = 0; | |
14218 | list = &namespace_scope_incomplete; | |
14219 | } | |
14220 | else | |
14221 | { | |
14222 | level = innermost_nonclass_level (); | |
14223 | list = &level->incomplete; | |
14224 | } | |
14225 | ||
14226 | while (1) | |
14227 | { | |
14228 | while (*list) | |
14229 | { | |
14230 | tree decl = TREE_VALUE (*list); | |
14231 | if ((decl && TREE_TYPE (decl) == type) | |
14232 | || (TREE_TYPE (decl) | |
14233 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
14234 | && TREE_TYPE (TREE_TYPE (decl)) == type)) | |
f30432d7 | 14235 | { |
70adf8a9 JM |
14236 | int toplevel = toplevel_bindings_p (); |
14237 | if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
14238 | && TREE_TYPE (TREE_TYPE (decl)) == type) | |
14239 | layout_type (TREE_TYPE (decl)); | |
14240 | layout_decl (decl, 0); | |
14241 | rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0); | |
14242 | if (! toplevel) | |
14243 | { | |
14244 | tree cleanup; | |
14245 | expand_decl (decl); | |
14246 | cleanup = maybe_build_cleanup (decl); | |
14247 | expand_decl_init (decl); | |
14248 | if (! expand_decl_cleanup (decl, cleanup)) | |
14249 | cp_error ("parser lost in parsing declaration of `%D'", | |
14250 | decl); | |
14251 | } | |
14252 | *list = TREE_CHAIN (*list); | |
f30432d7 | 14253 | } |
70adf8a9 JM |
14254 | else |
14255 | list = &TREE_CHAIN (*list); | |
14256 | } | |
14257 | ||
14258 | /* Keep looking through artificial binding levels generated | |
14259 | for local variables. */ | |
14260 | if (level && level->keep == 2) | |
14261 | { | |
14262 | level = level->level_chain; | |
14263 | list = &level->incomplete; | |
f30432d7 MS |
14264 | } |
14265 | else | |
70adf8a9 | 14266 | break; |
f30432d7 | 14267 | } |
8d08fdba MS |
14268 | } |
14269 | ||
86f45d2c MM |
14270 | /* If DECL is of a type which needs a cleanup, build that cleanup |
14271 | here. */ | |
e92cc029 | 14272 | |
86f45d2c MM |
14273 | tree |
14274 | maybe_build_cleanup (decl) | |
14275 | tree decl; | |
8d08fdba MS |
14276 | { |
14277 | tree type = TREE_TYPE (decl); | |
86f45d2c | 14278 | |
834c6dff | 14279 | if (type != error_mark_node && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) |
8d08fdba | 14280 | { |
80048418 | 14281 | int flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR; |
8d08fdba | 14282 | tree rval; |
8d08fdba | 14283 | |
8d08fdba MS |
14284 | if (TREE_CODE (type) == ARRAY_TYPE) |
14285 | rval = decl; | |
14286 | else | |
14287 | { | |
14288 | mark_addressable (decl); | |
14289 | rval = build_unary_op (ADDR_EXPR, decl, 0); | |
14290 | } | |
14291 | ||
14292 | /* Optimize for space over speed here. */ | |
14293 | if (! TYPE_USES_VIRTUAL_BASECLASSES (type) | |
14294 | || flag_expensive_optimizations) | |
14295 | flags |= LOOKUP_NONVIRTUAL; | |
14296 | ||
86f45d2c MM |
14297 | rval = build_delete (TREE_TYPE (rval), rval, |
14298 | sfk_complete_destructor, flags, 0); | |
8d08fdba MS |
14299 | |
14300 | if (TYPE_USES_VIRTUAL_BASECLASSES (type) | |
14301 | && ! TYPE_HAS_DESTRUCTOR (type)) | |
e1b3e07d | 14302 | rval = build_compound_expr (tree_cons (NULL_TREE, rval, |
051e6fd7 | 14303 | build_tree_list (NULL_TREE, build_vbase_delete (type, decl)))); |
8d08fdba | 14304 | |
8d08fdba MS |
14305 | return rval; |
14306 | } | |
14307 | return 0; | |
14308 | } | |
14309 | \f | |
558475f0 | 14310 | /* When a stmt has been parsed, this function is called. */ |
8d08fdba MS |
14311 | |
14312 | void | |
14313 | finish_stmt () | |
14314 | { | |
558475f0 MM |
14315 | /* Always assume this statement was not an expression statement. If |
14316 | it actually was an expression statement, its our callers | |
14317 | responsibility to fix this up. */ | |
14318 | last_expr_type = NULL_TREE; | |
8d08fdba MS |
14319 | } |
14320 | ||
3afb32a4 MM |
14321 | /* DECL was originally constructed as a non-static member function, |
14322 | but turned out to be static. Update it accordingly. */ | |
700f8a87 | 14323 | |
8857f91e | 14324 | void |
3afb32a4 MM |
14325 | revert_static_member_fn (decl) |
14326 | tree decl; | |
8d08fdba | 14327 | { |
700f8a87 | 14328 | tree tmp; |
3afb32a4 MM |
14329 | tree function = TREE_TYPE (decl); |
14330 | tree args = TYPE_ARG_TYPES (function); | |
8d08fdba | 14331 | |
68642fb6 | 14332 | if (CP_TYPE_QUALS (TREE_TYPE (TREE_VALUE (args))) |
91063b51 | 14333 | != TYPE_UNQUALIFIED) |
68642fb6 | 14334 | cp_error ("static member function `%#D' declared with type qualifiers", |
11306230 | 14335 | decl); |
f30432d7 | 14336 | |
700f8a87 MS |
14337 | args = TREE_CHAIN (args); |
14338 | tmp = build_function_type (TREE_TYPE (function), args); | |
91063b51 | 14339 | tmp = build_qualified_type (tmp, CP_TYPE_QUALS (function)); |
f30432d7 | 14340 | tmp = build_exception_variant (tmp, |
8d08fdba | 14341 | TYPE_RAISES_EXCEPTIONS (function)); |
3afb32a4 MM |
14342 | TREE_TYPE (decl) = tmp; |
14343 | if (DECL_ARGUMENTS (decl)) | |
14344 | DECL_ARGUMENTS (decl) = TREE_CHAIN (DECL_ARGUMENTS (decl)); | |
14345 | DECL_STATIC_FUNCTION_P (decl) = 1; | |
8d08fdba | 14346 | } |
a4443a08 | 14347 | |
68642fb6 UD |
14348 | /* Initialize the variables used during compilation of a C++ |
14349 | function. */ | |
db5ae43f | 14350 | |
99dccabc MM |
14351 | static void |
14352 | push_cp_function_context (f) | |
14353 | struct function *f; | |
14354 | { | |
ae499cce MM |
14355 | struct cp_language_function *p |
14356 | = ((struct cp_language_function *) | |
14357 | xcalloc (1, sizeof (struct cp_language_function))); | |
14358 | f->language = (struct language_function *) p; | |
db5ae43f | 14359 | |
b35d4555 MM |
14360 | /* It takes an explicit call to expand_body to generate RTL for a |
14361 | function. */ | |
14362 | expanding_p = 0; | |
f1dedc31 MM |
14363 | |
14364 | /* Whenever we start a new function, we destroy temporaries in the | |
14365 | usual way. */ | |
ae499cce | 14366 | current_stmt_tree ()->stmts_are_full_exprs_p = 1; |
db5ae43f MS |
14367 | } |
14368 | ||
a8f73d4b MM |
14369 | /* Free the language-specific parts of F, now that we've finished |
14370 | compiling the function. */ | |
db5ae43f | 14371 | |
99dccabc MM |
14372 | static void |
14373 | pop_cp_function_context (f) | |
14374 | struct function *f; | |
db5ae43f | 14375 | { |
d658cd4c | 14376 | if (f->language) |
8e4ce833 JJ |
14377 | { |
14378 | struct cp_language_function *cp = | |
14379 | (struct cp_language_function *) f->language; | |
14380 | if (cp->x_local_names) | |
14381 | VARRAY_FREE (cp->x_local_names); | |
14382 | free (f->language); | |
14383 | } | |
99dccabc | 14384 | f->language = 0; |
db5ae43f | 14385 | } |
ebfc180f | 14386 | |
59026e79 | 14387 | /* Mark P for GC. */ |
4519c0a8 | 14388 | |
59026e79 MM |
14389 | static void |
14390 | mark_lang_function (p) | |
ae499cce | 14391 | struct cp_language_function *p; |
59026e79 | 14392 | { |
87e3dbc9 MM |
14393 | if (!p) |
14394 | return; | |
14395 | ||
8f17b5c5 MM |
14396 | mark_c_language_function (&p->base); |
14397 | ||
4519c0a8 MM |
14398 | ggc_mark_tree (p->x_ctor_label); |
14399 | ggc_mark_tree (p->x_dtor_label); | |
4519c0a8 MM |
14400 | ggc_mark_tree (p->x_current_class_ptr); |
14401 | ggc_mark_tree (p->x_current_class_ref); | |
52a11cbf | 14402 | ggc_mark_tree (p->x_eh_spec_block); |
8e4ce833 | 14403 | ggc_mark_tree_varray (p->x_local_names); |
4519c0a8 | 14404 | |
6625cdb5 | 14405 | mark_named_label_lists (&p->x_named_labels, &p->x_named_label_uses); |
a8f73d4b | 14406 | mark_binding_level (&p->bindings); |
4519c0a8 MM |
14407 | } |
14408 | ||
59026e79 MM |
14409 | /* Mark the language-specific data in F for GC. */ |
14410 | ||
a09ba2e0 | 14411 | static void |
59026e79 MM |
14412 | mark_cp_function_context (f) |
14413 | struct function *f; | |
14414 | { | |
ae499cce | 14415 | mark_lang_function ((struct cp_language_function *) f->language); |
59026e79 | 14416 | } |
4519c0a8 | 14417 | |
4519c0a8 MM |
14418 | void |
14419 | lang_mark_tree (t) | |
14420 | tree t; | |
14421 | { | |
14422 | enum tree_code code = TREE_CODE (t); | |
14423 | if (code == IDENTIFIER_NODE) | |
14424 | { | |
14425 | struct lang_identifier *li = (struct lang_identifier *) t; | |
14426 | struct lang_id2 *li2 = li->x; | |
14427 | ggc_mark_tree (li->namespace_bindings); | |
a8f73d4b | 14428 | ggc_mark_tree (li->bindings); |
4519c0a8 MM |
14429 | ggc_mark_tree (li->class_value); |
14430 | ggc_mark_tree (li->class_template_info); | |
14431 | ||
14432 | if (li2) | |
14433 | { | |
14434 | ggc_mark_tree (li2->label_value); | |
14435 | ggc_mark_tree (li2->implicit_decl); | |
14436 | ggc_mark_tree (li2->error_locus); | |
14437 | } | |
14438 | } | |
87e3dbc9 MM |
14439 | else if (code == CPLUS_BINDING) |
14440 | { | |
14441 | if (BINDING_HAS_LEVEL_P (t)) | |
14442 | mark_binding_level (&BINDING_LEVEL (t)); | |
14443 | else | |
14444 | ggc_mark_tree (BINDING_SCOPE (t)); | |
14445 | ggc_mark_tree (BINDING_VALUE (t)); | |
14446 | } | |
14447 | else if (code == OVERLOAD) | |
14448 | ggc_mark_tree (OVL_FUNCTION (t)); | |
14449 | else if (code == TEMPLATE_PARM_INDEX) | |
14450 | ggc_mark_tree (TEMPLATE_PARM_DECL (t)); | |
4519c0a8 MM |
14451 | else if (TREE_CODE_CLASS (code) == 'd') |
14452 | { | |
14453 | struct lang_decl *ld = DECL_LANG_SPECIFIC (t); | |
14454 | ||
14455 | if (ld) | |
14456 | { | |
d60f72ae | 14457 | ggc_mark (ld); |
8f17b5c5 | 14458 | c_mark_lang_decl (&ld->decl_flags.base); |
5362b086 | 14459 | if (!DECL_GLOBAL_CTOR_P (t) |
6462c441 | 14460 | && !DECL_GLOBAL_DTOR_P (t) |
8e4ce833 JJ |
14461 | && !DECL_THUNK_P (t) |
14462 | && !DECL_DISCRIMINATOR_P (t)) | |
af3b4e59 | 14463 | ggc_mark_tree (ld->decl_flags.u2.access); |
31f8e4f3 MM |
14464 | else if (DECL_THUNK_P (t)) |
14465 | ggc_mark_tree (ld->decl_flags.u2.vcall_offset); | |
4519c0a8 MM |
14466 | if (TREE_CODE (t) != NAMESPACE_DECL) |
14467 | ggc_mark_tree (ld->decl_flags.u.template_info); | |
16bb3387 JM |
14468 | else |
14469 | mark_binding_level (&NAMESPACE_LEVEL (t)); | |
4519c0a8 MM |
14470 | if (CAN_HAVE_FULL_LANG_DECL_P (t)) |
14471 | { | |
4519c0a8 | 14472 | ggc_mark_tree (ld->befriending_classes); |
8f17b5c5 | 14473 | ggc_mark_tree (ld->context); |
db9b2174 | 14474 | ggc_mark_tree (ld->cloned_function); |
8e4ce833 | 14475 | ggc_mark_tree (ld->inlined_fns); |
4519c0a8 MM |
14476 | if (TREE_CODE (t) == TYPE_DECL) |
14477 | ggc_mark_tree (ld->u.sorted_fields); | |
59026e79 MM |
14478 | else if (TREE_CODE (t) == FUNCTION_DECL |
14479 | && !DECL_PENDING_INLINE_P (t)) | |
14480 | mark_lang_function (DECL_SAVED_FUNCTION_DATA (t)); | |
4519c0a8 MM |
14481 | } |
14482 | } | |
14483 | } | |
14484 | else if (TREE_CODE_CLASS (code) == 't') | |
14485 | { | |
14486 | struct lang_type *lt = TYPE_LANG_SPECIFIC (t); | |
14487 | ||
68642fb6 | 14488 | if (lt && !(TREE_CODE (t) == POINTER_TYPE |
87e3dbc9 | 14489 | && TREE_CODE (TREE_TYPE (t)) == METHOD_TYPE)) |
4519c0a8 | 14490 | { |
c27db0df | 14491 | ggc_mark (lt); |
911a71a7 | 14492 | ggc_mark_tree (lt->primary_base); |
4519c0a8 MM |
14493 | ggc_mark_tree (lt->vfields); |
14494 | ggc_mark_tree (lt->vbases); | |
14495 | ggc_mark_tree (lt->tags); | |
4519c0a8 | 14496 | ggc_mark_tree (lt->size); |
fee7654e | 14497 | ggc_mark_tree (lt->pure_virtuals); |
4519c0a8 MM |
14498 | ggc_mark_tree (lt->friend_classes); |
14499 | ggc_mark_tree (lt->rtti); | |
14500 | ggc_mark_tree (lt->methods); | |
14501 | ggc_mark_tree (lt->template_info); | |
87e3dbc9 | 14502 | ggc_mark_tree (lt->befriending_classes); |
4519c0a8 | 14503 | } |
87e3dbc9 MM |
14504 | else if (lt) |
14505 | /* In the case of pointer-to-member function types, the | |
14506 | TYPE_LANG_SPECIFIC is really just a tree. */ | |
14507 | ggc_mark_tree ((tree) lt); | |
4519c0a8 MM |
14508 | } |
14509 | } | |
5fd8e536 JM |
14510 | |
14511 | /* Return the IDENTIFIER_GLOBAL_VALUE of T, for use in common code, since | |
14512 | the definition of IDENTIFIER_GLOBAL_VALUE is different for C and C++. */ | |
14513 | ||
14514 | tree | |
14515 | identifier_global_value (t) | |
14516 | tree t; | |
14517 | { | |
14518 | return IDENTIFIER_GLOBAL_VALUE (t); | |
14519 | } | |
d363e7bf | 14520 | |
eaa7c03f JM |
14521 | /* Build the void_list_node (void_type_node having been created). */ |
14522 | tree | |
14523 | build_void_list_node () | |
14524 | { | |
14525 | tree t = build_tree_list (NULL_TREE, void_type_node); | |
14526 | TREE_PARMLIST (t) = 1; | |
14527 | return t; | |
14528 | } | |
14529 | ||
d363e7bf AJ |
14530 | static int |
14531 | cp_missing_noreturn_ok_p (decl) | |
14532 | tree decl; | |
14533 | { | |
14534 | /* A missing noreturn is ok for the `main' function. */ | |
92643fea | 14535 | return DECL_MAIN_P (decl); |
d363e7bf | 14536 | } |