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8d08fdba | 1 | /* Process declarations and variables for C compiler. |
59be0cdd | 2 | Copyright (C) 1988, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
8d08fdba MS |
3 | Hacked by Michael Tiemann (tiemann@cygnus.com) |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
8d08fdba MS |
21 | |
22 | ||
23 | /* Process declarations and symbol lookup for C front end. | |
24 | Also constructs types; the standard scalar types at initialization, | |
25 | and structure, union, array and enum types when they are declared. */ | |
26 | ||
27 | /* ??? not all decl nodes are given the most useful possible | |
28 | line numbers. For example, the CONST_DECLs for enum values. */ | |
29 | ||
30 | #include <stdio.h> | |
31 | #include "config.h" | |
32 | #include "tree.h" | |
33 | #include "rtl.h" | |
34 | #include "flags.h" | |
35 | #include "cp-tree.h" | |
36 | #include "decl.h" | |
37 | #include "lex.h" | |
38 | #include <sys/types.h> | |
39 | #include <signal.h> | |
40 | #include "obstack.h" | |
72b7eeff | 41 | #include "defaults.h" |
8d08fdba MS |
42 | |
43 | #define obstack_chunk_alloc xmalloc | |
44 | #define obstack_chunk_free free | |
45 | ||
8d2733ca MS |
46 | extern tree builtin_return_address_fndecl; |
47 | ||
8d08fdba MS |
48 | extern struct obstack permanent_obstack; |
49 | ||
50 | extern int current_class_depth; | |
51 | ||
a4443a08 MS |
52 | extern tree cleanups_this_call; |
53 | ||
e1cd6e56 MS |
54 | extern tree static_ctors, static_dtors; |
55 | ||
8d08fdba MS |
56 | /* Stack of places to restore the search obstack back to. */ |
57 | ||
58 | /* Obstack used for remembering local class declarations (like | |
59 | enums and static (const) members. */ | |
60 | #include "stack.h" | |
5566b478 | 61 | struct obstack decl_obstack; |
8d08fdba MS |
62 | static struct stack_level *decl_stack; |
63 | ||
64 | #ifndef CHAR_TYPE_SIZE | |
65 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
66 | #endif | |
67 | ||
68 | #ifndef SHORT_TYPE_SIZE | |
69 | #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2)) | |
70 | #endif | |
71 | ||
72 | #ifndef INT_TYPE_SIZE | |
73 | #define INT_TYPE_SIZE BITS_PER_WORD | |
74 | #endif | |
75 | ||
76 | #ifndef LONG_TYPE_SIZE | |
77 | #define LONG_TYPE_SIZE BITS_PER_WORD | |
78 | #endif | |
79 | ||
80 | #ifndef LONG_LONG_TYPE_SIZE | |
81 | #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2) | |
82 | #endif | |
83 | ||
84 | #ifndef WCHAR_UNSIGNED | |
85 | #define WCHAR_UNSIGNED 0 | |
86 | #endif | |
87 | ||
88 | #ifndef FLOAT_TYPE_SIZE | |
89 | #define FLOAT_TYPE_SIZE BITS_PER_WORD | |
90 | #endif | |
91 | ||
92 | #ifndef DOUBLE_TYPE_SIZE | |
93 | #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
94 | #endif | |
95 | ||
96 | #ifndef LONG_DOUBLE_TYPE_SIZE | |
97 | #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2) | |
98 | #endif | |
99 | ||
255512c1 | 100 | #ifndef BOOL_TYPE_SIZE |
e1cd6e56 | 101 | #ifdef SLOW_BYTE_ACCESS |
e30350c7 | 102 | #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (BITS_PER_WORD) : (BITS_PER_UNIT)) |
e1cd6e56 MS |
103 | #else |
104 | #define BOOL_TYPE_SIZE BITS_PER_UNIT | |
105 | #endif | |
255512c1 JM |
106 | #endif |
107 | ||
8d08fdba MS |
108 | /* We let tm.h override the types used here, to handle trivial differences |
109 | such as the choice of unsigned int or long unsigned int for size_t. | |
110 | When machines start needing nontrivial differences in the size type, | |
111 | it would be best to do something here to figure out automatically | |
112 | from other information what type to use. */ | |
113 | ||
114 | #ifndef SIZE_TYPE | |
115 | #define SIZE_TYPE "long unsigned int" | |
116 | #endif | |
117 | ||
118 | #ifndef PTRDIFF_TYPE | |
119 | #define PTRDIFF_TYPE "long int" | |
120 | #endif | |
121 | ||
122 | #ifndef WCHAR_TYPE | |
123 | #define WCHAR_TYPE "int" | |
124 | #endif | |
125 | ||
8d08fdba MS |
126 | static tree grokparms PROTO((tree, int)); |
127 | static tree lookup_nested_type PROTO((tree, tree)); | |
128 | static char *redeclaration_error_message PROTO((tree, tree)); | |
21451173 MS |
129 | extern void* push_eh_context PROTO(()); |
130 | extern void pop_eh_context PROTO((void *)); | |
8d08fdba MS |
131 | |
132 | tree define_function | |
133 | PROTO((char *, tree, enum built_in_function, void (*)(), char *)); | |
134 | ||
135 | /* a node which has tree code ERROR_MARK, and whose type is itself. | |
136 | All erroneous expressions are replaced with this node. All functions | |
137 | that accept nodes as arguments should avoid generating error messages | |
138 | if this node is one of the arguments, since it is undesirable to get | |
139 | multiple error messages from one error in the input. */ | |
140 | ||
141 | tree error_mark_node; | |
142 | ||
143 | /* Erroneous argument lists can use this *IFF* they do not modify it. */ | |
144 | tree error_mark_list; | |
145 | ||
146 | /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */ | |
147 | ||
148 | tree short_integer_type_node; | |
149 | tree integer_type_node; | |
150 | tree long_integer_type_node; | |
151 | tree long_long_integer_type_node; | |
152 | ||
153 | tree short_unsigned_type_node; | |
154 | tree unsigned_type_node; | |
155 | tree long_unsigned_type_node; | |
156 | tree long_long_unsigned_type_node; | |
157 | ||
158 | tree ptrdiff_type_node; | |
159 | ||
160 | tree unsigned_char_type_node; | |
161 | tree signed_char_type_node; | |
162 | tree char_type_node; | |
163 | tree wchar_type_node; | |
164 | tree signed_wchar_type_node; | |
165 | tree unsigned_wchar_type_node; | |
166 | ||
f376e137 MS |
167 | tree wchar_decl_node; |
168 | ||
8d08fdba MS |
169 | tree float_type_node; |
170 | tree double_type_node; | |
171 | tree long_double_type_node; | |
172 | ||
173 | tree intQI_type_node; | |
174 | tree intHI_type_node; | |
175 | tree intSI_type_node; | |
176 | tree intDI_type_node; | |
177 | ||
178 | tree unsigned_intQI_type_node; | |
179 | tree unsigned_intHI_type_node; | |
180 | tree unsigned_intSI_type_node; | |
181 | tree unsigned_intDI_type_node; | |
182 | ||
183 | /* a VOID_TYPE node, and the same, packaged in a TREE_LIST. */ | |
184 | ||
185 | tree void_type_node, void_list_node; | |
186 | tree void_zero_node; | |
187 | ||
188 | /* Nodes for types `void *' and `const void *'. */ | |
189 | ||
190 | tree ptr_type_node, const_ptr_type_node; | |
191 | ||
192 | /* Nodes for types `char *' and `const char *'. */ | |
193 | ||
194 | tree string_type_node, const_string_type_node; | |
195 | ||
196 | /* Type `char[256]' or something like it. | |
197 | Used when an array of char is needed and the size is irrelevant. */ | |
198 | ||
199 | tree char_array_type_node; | |
200 | ||
201 | /* Type `int[256]' or something like it. | |
202 | Used when an array of int needed and the size is irrelevant. */ | |
203 | ||
204 | tree int_array_type_node; | |
205 | ||
206 | /* Type `wchar_t[256]' or something like it. | |
207 | Used when a wide string literal is created. */ | |
208 | ||
209 | tree wchar_array_type_node; | |
210 | ||
2986ae00 | 211 | /* The bool data type, and constants */ |
255512c1 | 212 | tree boolean_type_node, boolean_true_node, boolean_false_node; |
2986ae00 | 213 | |
8d08fdba MS |
214 | /* type `int ()' -- used for implicit declaration of functions. */ |
215 | ||
216 | tree default_function_type; | |
217 | ||
218 | /* function types `double (double)' and `double (double, double)', etc. */ | |
219 | ||
220 | tree double_ftype_double, double_ftype_double_double; | |
221 | tree int_ftype_int, long_ftype_long; | |
cffa8729 MS |
222 | tree float_ftype_float; |
223 | tree ldouble_ftype_ldouble; | |
8d08fdba | 224 | |
8d08fdba | 225 | /* Function type `int (const void *, const void *, size_t)' */ |
5566b478 | 226 | static tree int_ftype_cptr_cptr_sizet; |
8d08fdba MS |
227 | |
228 | /* C++ extensions */ | |
700f8a87 | 229 | tree vtable_entry_type; |
8d08fdba | 230 | tree delta_type_node; |
db5ae43f MS |
231 | #if 0 |
232 | /* Old rtti stuff. */ | |
233 | tree __baselist_desc_type_node; | |
234 | tree __i_desc_type_node, __m_desc_type_node; | |
8d08fdba | 235 | tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type; |
db5ae43f | 236 | #endif |
5566b478 MS |
237 | tree __t_desc_type_node; |
238 | #if 0 | |
239 | tree __tp_desc_type_node; | |
240 | #endif | |
db5ae43f MS |
241 | tree __access_mode_type_node; |
242 | tree __bltn_desc_type_node, __user_desc_type_node, __class_desc_type_node; | |
243 | tree __ptr_desc_type_node, __attr_desc_type_node, __func_desc_type_node; | |
244 | tree __ptmf_desc_type_node, __ptmd_desc_type_node; | |
245 | #if 0 | |
246 | /* Not needed yet? May be needed one day? */ | |
247 | tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type; | |
248 | tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type; | |
249 | tree __ptmf_desc_array_type, __ptmd_desc_array_type; | |
250 | #endif | |
251 | ||
8d08fdba MS |
252 | tree class_star_type_node; |
253 | tree class_type_node, record_type_node, union_type_node, enum_type_node; | |
db5ae43f | 254 | tree unknown_type_node; |
8d08fdba MS |
255 | tree opaque_type_node, signature_type_node; |
256 | tree sigtable_entry_type; | |
8d08fdba | 257 | |
8d08fdba MS |
258 | /* Array type `vtable_entry_type[]' */ |
259 | tree vtbl_type_node; | |
260 | ||
8d08fdba MS |
261 | /* In a destructor, the point at which all derived class destroying |
262 | has been done, just before any base class destroying will be done. */ | |
263 | ||
264 | tree dtor_label; | |
265 | ||
72b7eeff MS |
266 | /* In a destructor, the last insn emitted after the start of the |
267 | function and the parms. */ | |
268 | ||
269 | rtx last_dtor_insn; | |
270 | ||
8d08fdba MS |
271 | /* In a constructor, the point at which we are ready to return |
272 | the pointer to the initialized object. */ | |
273 | ||
274 | tree ctor_label; | |
275 | ||
8d08fdba MS |
276 | /* A FUNCTION_DECL which can call `abort'. Not necessarily the |
277 | one that the user will declare, but sufficient to be called | |
278 | by routines that want to abort the program. */ | |
279 | ||
280 | tree abort_fndecl; | |
281 | ||
282 | extern rtx cleanup_label, return_label; | |
283 | ||
284 | /* If original DECL_RESULT of current function was a register, | |
285 | but due to being an addressable named return value, would up | |
286 | on the stack, this variable holds the named return value's | |
287 | original location. */ | |
288 | rtx original_result_rtx; | |
289 | ||
290 | /* Sequence of insns which represents base initialization. */ | |
a9aedbc2 | 291 | tree base_init_expr; |
8d08fdba MS |
292 | |
293 | /* C++: Keep these around to reduce calls to `get_identifier'. | |
294 | Identifiers for `this' in member functions and the auto-delete | |
295 | parameter for destructors. */ | |
296 | tree this_identifier, in_charge_identifier; | |
dff6b454 | 297 | /* Used in pointer to member functions, in vtables, and in sigtables. */ |
8d08fdba | 298 | tree pfn_identifier, index_identifier, delta_identifier, delta2_identifier; |
9dd70aa4 | 299 | tree pfn_or_delta2_identifier, tag_identifier; |
5566b478 | 300 | tree vt_off_identifier; |
8d08fdba MS |
301 | |
302 | /* A list (chain of TREE_LIST nodes) of named label uses. | |
303 | The TREE_PURPOSE field is the list of variables defined | |
304 | the the label's scope defined at the point of use. | |
305 | The TREE_VALUE field is the LABEL_DECL used. | |
306 | The TREE_TYPE field holds `current_binding_level' at the | |
307 | point of the label's use. | |
308 | ||
309 | Used only for jumps to as-yet undefined labels, since | |
310 | jumps to defined labels can have their validity checked | |
311 | by stmt.c. */ | |
312 | ||
313 | static tree named_label_uses; | |
314 | ||
315 | /* A list of objects which have constructors or destructors | |
316 | which reside in the global scope. The decl is stored in | |
317 | the TREE_VALUE slot and the initializer is stored | |
318 | in the TREE_PURPOSE slot. */ | |
319 | tree static_aggregates; | |
320 | ||
8d08fdba MS |
321 | /* -- end of C++ */ |
322 | ||
323 | /* Two expressions that are constants with value zero. | |
324 | The first is of type `int', the second of type `void *'. */ | |
325 | ||
326 | tree integer_zero_node; | |
327 | tree null_pointer_node; | |
328 | ||
329 | /* A node for the integer constants 1, 2, and 3. */ | |
330 | ||
331 | tree integer_one_node, integer_two_node, integer_three_node; | |
332 | ||
333 | /* Nonzero if we have seen an invalid cross reference | |
334 | to a struct, union, or enum, but not yet printed the message. */ | |
335 | ||
336 | tree pending_invalid_xref; | |
337 | /* File and line to appear in the eventual error message. */ | |
338 | char *pending_invalid_xref_file; | |
339 | int pending_invalid_xref_line; | |
340 | ||
341 | /* While defining an enum type, this is 1 plus the last enumerator | |
342 | constant value. */ | |
343 | ||
344 | static tree enum_next_value; | |
345 | ||
7177d104 MS |
346 | /* Nonzero means that there was overflow computing enum_next_value. */ |
347 | ||
348 | static int enum_overflow; | |
349 | ||
8d08fdba MS |
350 | /* Parsing a function declarator leaves a list of parameter names |
351 | or a chain or parameter decls here. */ | |
352 | ||
353 | tree last_function_parms; | |
354 | ||
355 | /* Parsing a function declarator leaves here a chain of structure | |
356 | and enum types declared in the parmlist. */ | |
357 | ||
358 | static tree last_function_parm_tags; | |
359 | ||
360 | /* After parsing the declarator that starts a function definition, | |
361 | `start_function' puts here the list of parameter names or chain of decls. | |
362 | `store_parm_decls' finds it here. */ | |
363 | ||
364 | static tree current_function_parms; | |
365 | ||
366 | /* Similar, for last_function_parm_tags. */ | |
367 | static tree current_function_parm_tags; | |
368 | ||
369 | /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function | |
370 | that have names. Here so we can clear out their names' definitions | |
371 | at the end of the function. */ | |
372 | ||
373 | static tree named_labels; | |
374 | ||
375 | /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */ | |
376 | ||
377 | static tree shadowed_labels; | |
378 | ||
8d08fdba MS |
379 | /* The FUNCTION_DECL for the function currently being compiled, |
380 | or 0 if between functions. */ | |
381 | tree current_function_decl; | |
382 | ||
383 | /* Set to 0 at beginning of a function definition, set to 1 if | |
384 | a return statement that specifies a return value is seen. */ | |
385 | ||
386 | int current_function_returns_value; | |
387 | ||
388 | /* Set to 0 at beginning of a function definition, set to 1 if | |
389 | a return statement with no argument is seen. */ | |
390 | ||
391 | int current_function_returns_null; | |
392 | ||
393 | /* Set to 0 at beginning of a function definition, and whenever | |
394 | a label (case or named) is defined. Set to value of expression | |
395 | returned from function when that value can be transformed into | |
396 | a named return value. */ | |
397 | ||
398 | tree current_function_return_value; | |
399 | ||
400 | /* Set to nonzero by `grokdeclarator' for a function | |
401 | whose return type is defaulted, if warnings for this are desired. */ | |
402 | ||
403 | static int warn_about_return_type; | |
404 | ||
8d08fdba MS |
405 | /* Nonzero means give `double' the same size as `float'. */ |
406 | ||
407 | extern int flag_short_double; | |
408 | ||
409 | /* Nonzero means don't recognize any builtin functions. */ | |
410 | ||
411 | extern int flag_no_builtin; | |
412 | ||
00595019 MS |
413 | /* Nonzero means don't recognize the non-ANSI builtin functions. |
414 | -ansi sets this. */ | |
415 | ||
416 | extern int flag_no_nonansi_builtin; | |
417 | ||
e1cd6e56 MS |
418 | /* Nonzero means enable obscure ANSI features and disable GNU extensions |
419 | that might cause ANSI-compliant code to be miscompiled. */ | |
8d08fdba MS |
420 | |
421 | extern int flag_ansi; | |
422 | ||
423 | /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes) | |
424 | objects. */ | |
425 | extern int flag_huge_objects; | |
426 | ||
427 | /* Nonzero if we want to conserve space in the .o files. We do this | |
428 | by putting uninitialized data and runtime initialized data into | |
ddd5a7c1 | 429 | .common instead of .data at the expense of not flagging multiple |
8d08fdba MS |
430 | definitions. */ |
431 | extern int flag_conserve_space; | |
432 | ||
433 | /* Pointers to the base and current top of the language name stack. */ | |
434 | ||
435 | extern tree *current_lang_base, *current_lang_stack; | |
436 | \f | |
51c184be | 437 | /* C and C++ flags are in decl2.c. */ |
8d08fdba MS |
438 | |
439 | /* Set to 0 at beginning of a constructor, set to 1 | |
440 | if that function does an allocation before referencing its | |
441 | instance variable. */ | |
5566b478 | 442 | static int current_function_assigns_this; |
8d08fdba MS |
443 | int current_function_just_assigned_this; |
444 | ||
445 | /* Set to 0 at beginning of a function. Set non-zero when | |
446 | store_parm_decls is called. Don't call store_parm_decls | |
447 | if this flag is non-zero! */ | |
448 | int current_function_parms_stored; | |
449 | ||
51c184be | 450 | /* Flag used when debugging spew.c */ |
8d08fdba MS |
451 | |
452 | extern int spew_debug; | |
453 | ||
454 | /* This is a copy of the class_shadowed list of the previous class binding | |
455 | contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs | |
456 | when entering another class scope (i.e. a cache miss). */ | |
457 | extern tree previous_class_values; | |
458 | ||
459 | \f | |
460 | /* Allocate a level of searching. */ | |
461 | struct stack_level * | |
462 | push_decl_level (stack, obstack) | |
463 | struct stack_level *stack; | |
464 | struct obstack *obstack; | |
465 | { | |
466 | struct stack_level tem; | |
467 | tem.prev = stack; | |
468 | ||
469 | return push_stack_level (obstack, (char *)&tem, sizeof (tem)); | |
470 | } | |
471 | \f | |
472 | /* For each binding contour we allocate a binding_level structure | |
473 | * which records the names defined in that contour. | |
474 | * Contours include: | |
475 | * 0) the global one | |
476 | * 1) one for each function definition, | |
477 | * where internal declarations of the parameters appear. | |
478 | * 2) one for each compound statement, | |
479 | * to record its declarations. | |
480 | * | |
481 | * The current meaning of a name can be found by searching the levels from | |
482 | * the current one out to the global one. | |
483 | * | |
484 | * Off to the side, may be the class_binding_level. This exists | |
485 | * only to catch class-local declarations. It is otherwise | |
486 | * nonexistent. | |
487 | * | |
488 | * Also there may be binding levels that catch cleanups that | |
489 | * must be run when exceptions occur. | |
490 | */ | |
491 | ||
492 | /* Note that the information in the `names' component of the global contour | |
493 | is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */ | |
494 | ||
495 | struct binding_level | |
496 | { | |
497 | /* A chain of _DECL nodes for all variables, constants, functions, | |
498 | * and typedef types. These are in the reverse of the order supplied. | |
499 | */ | |
500 | tree names; | |
501 | ||
502 | /* A list of structure, union and enum definitions, | |
503 | * for looking up tag names. | |
504 | * It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name, | |
505 | * or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE, | |
506 | * or ENUMERAL_TYPE node. | |
507 | * | |
508 | * C++: the TREE_VALUE nodes can be simple types for component_bindings. | |
509 | * | |
510 | */ | |
511 | tree tags; | |
512 | ||
513 | /* For each level, a list of shadowed outer-level local definitions | |
514 | to be restored when this level is popped. | |
515 | Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and | |
516 | whose TREE_VALUE is its old definition (a kind of ..._DECL node). */ | |
517 | tree shadowed; | |
518 | ||
519 | /* Same, for IDENTIFIER_CLASS_VALUE. */ | |
520 | tree class_shadowed; | |
521 | ||
522 | /* Same, for IDENTIFIER_TYPE_VALUE. */ | |
523 | tree type_shadowed; | |
524 | ||
525 | /* For each level (except not the global one), | |
526 | a chain of BLOCK nodes for all the levels | |
527 | that were entered and exited one level down. */ | |
528 | tree blocks; | |
529 | ||
530 | /* The BLOCK node for this level, if one has been preallocated. | |
531 | If 0, the BLOCK is allocated (if needed) when the level is popped. */ | |
532 | tree this_block; | |
533 | ||
534 | /* The binding level which this one is contained in (inherits from). */ | |
535 | struct binding_level *level_chain; | |
536 | ||
f30432d7 | 537 | /* List of decls in `names' that have incomplete |
8d08fdba | 538 | structure or union types. */ |
f30432d7 | 539 | tree incomplete; |
8d08fdba | 540 | |
8d6e462b | 541 | /* List of VAR_DECLS saved from a previous for statement. |
abc95ed3 | 542 | These would be dead in ANSI-conforming code, but might |
8d6e462b PB |
543 | be referenced in traditional code. */ |
544 | tree dead_vars_from_for; | |
545 | ||
8d08fdba MS |
546 | /* 1 for the level that holds the parameters of a function. |
547 | 2 for the level that holds a class declaration. | |
548 | 3 for levels that hold parameter declarations. */ | |
549 | unsigned parm_flag : 4; | |
550 | ||
551 | /* 1 means make a BLOCK for this level regardless of all else. | |
552 | 2 for temporary binding contours created by the compiler. */ | |
553 | unsigned keep : 3; | |
554 | ||
555 | /* Nonzero if this level "doesn't exist" for tags. */ | |
556 | unsigned tag_transparent : 1; | |
557 | ||
558 | /* Nonzero if this level can safely have additional | |
559 | cleanup-needing variables added to it. */ | |
560 | unsigned more_cleanups_ok : 1; | |
561 | unsigned have_cleanups : 1; | |
562 | ||
5566b478 MS |
563 | /* Nonzero if this level is for storing the decls for template |
564 | parameters and generic decls; these decls will be discarded and | |
565 | replaced with a TEMPLATE_DECL. */ | |
8d08fdba MS |
566 | unsigned pseudo_global : 1; |
567 | ||
a9aedbc2 MS |
568 | /* This is set for a namespace binding level. */ |
569 | unsigned namespace_p : 1; | |
570 | ||
2ee887f2 MS |
571 | /* True if this level is that of a for-statement where we need to |
572 | worry about ambiguous (traditional or ANSI) scope rules. */ | |
8d6e462b PB |
573 | unsigned is_for_scope : 1; |
574 | ||
5566b478 | 575 | /* Two bits left for this word. */ |
8d08fdba MS |
576 | |
577 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
578 | /* Binding depth at which this level began. */ | |
579 | unsigned binding_depth; | |
580 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
581 | }; | |
582 | ||
583 | #define NULL_BINDING_LEVEL ((struct binding_level *) NULL) | |
584 | ||
585 | /* The (non-class) binding level currently in effect. */ | |
586 | ||
587 | static struct binding_level *current_binding_level; | |
588 | ||
589 | /* The binding level of the current class, if any. */ | |
590 | ||
591 | static struct binding_level *class_binding_level; | |
592 | ||
593 | /* The current (class or non-class) binding level currently in effect. */ | |
594 | ||
595 | #define inner_binding_level \ | |
596 | (class_binding_level ? class_binding_level : current_binding_level) | |
597 | ||
598 | /* A chain of binding_level structures awaiting reuse. */ | |
599 | ||
600 | static struct binding_level *free_binding_level; | |
601 | ||
602 | /* The outermost binding level, for names of file scope. | |
603 | This is created when the compiler is started and exists | |
604 | through the entire run. */ | |
605 | ||
606 | static struct binding_level *global_binding_level; | |
607 | ||
608 | /* Binding level structures are initialized by copying this one. */ | |
609 | ||
610 | static struct binding_level clear_binding_level; | |
611 | ||
612 | /* Nonzero means unconditionally make a BLOCK for the next level pushed. */ | |
613 | ||
614 | static int keep_next_level_flag; | |
615 | ||
616 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
617 | static int binding_depth = 0; | |
618 | static int is_class_level = 0; | |
619 | ||
620 | static void | |
621 | indent () | |
622 | { | |
623 | register unsigned i; | |
624 | ||
625 | for (i = 0; i < binding_depth*2; i++) | |
626 | putc (' ', stderr); | |
627 | } | |
628 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
629 | ||
630 | static tree pushdecl_with_scope PROTO((tree, struct binding_level *)); | |
631 | ||
632 | static void | |
633 | push_binding_level (newlevel, tag_transparent, keep) | |
634 | struct binding_level *newlevel; | |
635 | int tag_transparent, keep; | |
636 | { | |
637 | /* Add this level to the front of the chain (stack) of levels that | |
638 | are active. */ | |
639 | *newlevel = clear_binding_level; | |
640 | if (class_binding_level) | |
641 | { | |
642 | newlevel->level_chain = class_binding_level; | |
643 | class_binding_level = (struct binding_level *)0; | |
644 | } | |
645 | else | |
646 | { | |
647 | newlevel->level_chain = current_binding_level; | |
648 | } | |
649 | current_binding_level = newlevel; | |
650 | newlevel->tag_transparent = tag_transparent; | |
651 | newlevel->more_cleanups_ok = 1; | |
8d08fdba MS |
652 | newlevel->keep = keep; |
653 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
654 | newlevel->binding_depth = binding_depth; | |
655 | indent (); | |
656 | fprintf (stderr, "push %s level 0x%08x line %d\n", | |
657 | (is_class_level) ? "class" : "block", newlevel, lineno); | |
658 | is_class_level = 0; | |
659 | binding_depth++; | |
660 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
661 | } | |
662 | ||
663 | static void | |
664 | pop_binding_level () | |
665 | { | |
666 | if (class_binding_level) | |
667 | current_binding_level = class_binding_level; | |
668 | ||
669 | if (global_binding_level) | |
670 | { | |
671 | /* cannot pop a level, if there are none left to pop. */ | |
672 | if (current_binding_level == global_binding_level) | |
673 | my_friendly_abort (123); | |
674 | } | |
675 | /* Pop the current level, and free the structure for reuse. */ | |
676 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
677 | binding_depth--; | |
678 | indent (); | |
679 | fprintf (stderr, "pop %s level 0x%08x line %d\n", | |
680 | (is_class_level) ? "class" : "block", | |
681 | current_binding_level, lineno); | |
682 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
683 | { |
684 | indent (); | |
685 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
686 | } | |
8d08fdba MS |
687 | is_class_level = 0; |
688 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
689 | { | |
690 | register struct binding_level *level = current_binding_level; | |
691 | current_binding_level = current_binding_level->level_chain; | |
692 | level->level_chain = free_binding_level; | |
693 | #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
694 | if (level->binding_depth != binding_depth) | |
695 | abort (); | |
696 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
697 | free_binding_level = level; | |
698 | ||
699 | class_binding_level = current_binding_level; | |
700 | if (class_binding_level->parm_flag != 2) | |
701 | class_binding_level = 0; | |
702 | while (current_binding_level->parm_flag == 2) | |
703 | current_binding_level = current_binding_level->level_chain; | |
704 | } | |
705 | } | |
a9aedbc2 MS |
706 | |
707 | static void | |
708 | suspend_binding_level () | |
709 | { | |
710 | if (class_binding_level) | |
711 | current_binding_level = class_binding_level; | |
712 | ||
713 | if (global_binding_level) | |
714 | { | |
715 | /* cannot suspend a level, if there are none left to suspend. */ | |
716 | if (current_binding_level == global_binding_level) | |
717 | my_friendly_abort (123); | |
718 | } | |
719 | /* Suspend the current level. */ | |
720 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
721 | binding_depth--; | |
722 | indent (); | |
723 | fprintf (stderr, "suspend %s level 0x%08x line %d\n", | |
724 | (is_class_level) ? "class" : "block", | |
725 | current_binding_level, lineno); | |
726 | if (is_class_level != (current_binding_level == class_binding_level)) | |
9e9ff709 MS |
727 | { |
728 | indent (); | |
729 | fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n"); | |
730 | } | |
a9aedbc2 MS |
731 | is_class_level = 0; |
732 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
733 | { | |
a9aedbc2 | 734 | current_binding_level = current_binding_level->level_chain; |
a9aedbc2 MS |
735 | class_binding_level = current_binding_level; |
736 | if (class_binding_level->parm_flag != 2) | |
737 | class_binding_level = 0; | |
738 | while (current_binding_level->parm_flag == 2) | |
739 | current_binding_level = current_binding_level->level_chain; | |
740 | } | |
741 | } | |
742 | ||
743 | void | |
744 | resume_binding_level (b) | |
745 | struct binding_level *b; | |
746 | { | |
747 | if (class_binding_level) | |
748 | { | |
749 | #if 1 | |
750 | /* These are here because we cannot deal with shadows yet. */ | |
751 | sorry ("cannot resume a namespace inside class"); | |
752 | return; | |
753 | #else | |
754 | b->level_chain = class_binding_level; | |
755 | class_binding_level = (struct binding_level *)0; | |
756 | #endif | |
757 | } | |
758 | else | |
759 | { | |
760 | #if 1 | |
761 | /* These are here because we cannot deal with shadows yet. */ | |
762 | if (b->level_chain != current_binding_level) | |
763 | { | |
764 | sorry ("cannot resume a namespace inside a different namespace"); | |
765 | return; | |
766 | } | |
767 | #endif | |
768 | b->level_chain = current_binding_level; | |
769 | } | |
770 | current_binding_level = b; | |
771 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
772 | b->binding_depth = binding_depth; | |
773 | indent (); | |
774 | fprintf (stderr, "resume %s level 0x%08x line %d\n", | |
775 | (is_class_level) ? "class" : "block", b, lineno); | |
776 | is_class_level = 0; | |
777 | binding_depth++; | |
778 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
779 | } | |
8d08fdba | 780 | \f |
cffa8729 MS |
781 | /* Create a new `struct binding_level'. */ |
782 | ||
783 | static | |
784 | struct binding_level * | |
785 | make_binding_level () | |
786 | { | |
787 | /* NOSTRICT */ | |
788 | return (struct binding_level *) xmalloc (sizeof (struct binding_level)); | |
789 | } | |
790 | ||
8d08fdba MS |
791 | /* Nonzero if we are currently in the global binding level. */ |
792 | ||
793 | int | |
794 | global_bindings_p () | |
795 | { | |
796 | return current_binding_level == global_binding_level; | |
797 | } | |
798 | ||
a9aedbc2 MS |
799 | /* Nonzero if we are currently in a toplevel binding level. This |
800 | means either the global binding level or a namespace in a toplevel | |
801 | binding level. */ | |
802 | ||
803 | int | |
804 | toplevel_bindings_p () | |
805 | { | |
806 | struct binding_level *b = current_binding_level; | |
807 | ||
808 | while (1) | |
809 | { | |
810 | if (b == global_binding_level) | |
811 | return 1; | |
5566b478 MS |
812 | if (b->pseudo_global) |
813 | return 1; | |
a9aedbc2 MS |
814 | if (! b->namespace_p) |
815 | return 0; | |
816 | b=b->level_chain; | |
817 | } | |
818 | } | |
819 | ||
820 | /* Nonzero if this is a namespace scope. */ | |
821 | ||
822 | int | |
823 | namespace_bindings_p () | |
824 | { | |
825 | return current_binding_level->namespace_p; | |
826 | } | |
827 | ||
8d08fdba MS |
828 | void |
829 | keep_next_level () | |
830 | { | |
831 | keep_next_level_flag = 1; | |
832 | } | |
833 | ||
834 | /* Nonzero if the current level needs to have a BLOCK made. */ | |
835 | ||
836 | int | |
837 | kept_level_p () | |
838 | { | |
839 | return (current_binding_level->blocks != NULL_TREE | |
840 | || current_binding_level->keep | |
841 | || current_binding_level->names != NULL_TREE | |
842 | || (current_binding_level->tags != NULL_TREE | |
843 | && !current_binding_level->tag_transparent)); | |
844 | } | |
845 | ||
846 | /* Identify this binding level as a level of parameters. */ | |
847 | ||
848 | void | |
849 | declare_parm_level () | |
850 | { | |
851 | current_binding_level->parm_flag = 1; | |
852 | } | |
853 | ||
8d08fdba MS |
854 | void |
855 | declare_pseudo_global_level () | |
856 | { | |
857 | current_binding_level->pseudo_global = 1; | |
858 | } | |
859 | ||
a9aedbc2 MS |
860 | void |
861 | declare_namespace_level () | |
862 | { | |
863 | current_binding_level->namespace_p = 1; | |
864 | } | |
865 | ||
8d08fdba MS |
866 | int |
867 | pseudo_global_level_p () | |
868 | { | |
869 | return current_binding_level->pseudo_global; | |
870 | } | |
871 | ||
872 | void | |
873 | set_class_shadows (shadows) | |
874 | tree shadows; | |
875 | { | |
876 | class_binding_level->class_shadowed = shadows; | |
877 | } | |
878 | ||
879 | /* Enter a new binding level. | |
880 | If TAG_TRANSPARENT is nonzero, do so only for the name space of variables, | |
881 | not for that of tags. */ | |
882 | ||
883 | void | |
884 | pushlevel (tag_transparent) | |
885 | int tag_transparent; | |
886 | { | |
887 | register struct binding_level *newlevel = NULL_BINDING_LEVEL; | |
888 | ||
889 | /* If this is the top level of a function, | |
890 | just make sure that NAMED_LABELS is 0. | |
891 | They should have been set to 0 at the end of the previous function. */ | |
892 | ||
893 | if (current_binding_level == global_binding_level) | |
894 | my_friendly_assert (named_labels == NULL_TREE, 134); | |
895 | ||
896 | /* Reuse or create a struct for this binding level. */ | |
897 | ||
898 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
899 | if (0) | |
900 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
901 | if (free_binding_level) | |
902 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
903 | { | |
904 | newlevel = free_binding_level; | |
905 | free_binding_level = free_binding_level->level_chain; | |
906 | } | |
907 | else | |
908 | { | |
cffa8729 | 909 | newlevel = make_binding_level (); |
8d08fdba | 910 | } |
cffa8729 | 911 | |
8d08fdba MS |
912 | push_binding_level (newlevel, tag_transparent, keep_next_level_flag); |
913 | GNU_xref_start_scope ((HOST_WIDE_INT) newlevel); | |
914 | keep_next_level_flag = 0; | |
915 | } | |
916 | ||
5566b478 | 917 | void |
8d6e462b PB |
918 | note_level_for_for () |
919 | { | |
920 | current_binding_level->is_for_scope = 1; | |
921 | } | |
922 | ||
8d08fdba MS |
923 | void |
924 | pushlevel_temporary (tag_transparent) | |
925 | int tag_transparent; | |
926 | { | |
927 | pushlevel (tag_transparent); | |
928 | current_binding_level->keep = 2; | |
929 | clear_last_expr (); | |
930 | ||
931 | /* Note we don't call push_momentary() here. Otherwise, it would cause | |
932 | cleanups to be allocated on the momentary obstack, and they will be | |
933 | overwritten by the next statement. */ | |
934 | ||
935 | expand_start_bindings (0); | |
936 | } | |
937 | ||
938 | /* Exit a binding level. | |
939 | Pop the level off, and restore the state of the identifier-decl mappings | |
940 | that were in effect when this level was entered. | |
941 | ||
942 | If KEEP == 1, this level had explicit declarations, so | |
943 | and create a "block" (a BLOCK node) for the level | |
944 | to record its declarations and subblocks for symbol table output. | |
945 | ||
946 | If KEEP == 2, this level's subblocks go to the front, | |
947 | not the back of the current binding level. This happens, | |
948 | for instance, when code for constructors and destructors | |
949 | need to generate code at the end of a function which must | |
950 | be moved up to the front of the function. | |
951 | ||
952 | If FUNCTIONBODY is nonzero, this level is the body of a function, | |
953 | so create a block as if KEEP were set and also clear out all | |
954 | label names. | |
955 | ||
956 | If REVERSE is nonzero, reverse the order of decls before putting | |
957 | them into the BLOCK. */ | |
958 | ||
959 | tree | |
960 | poplevel (keep, reverse, functionbody) | |
961 | int keep; | |
962 | int reverse; | |
963 | int functionbody; | |
964 | { | |
965 | register tree link; | |
966 | /* The chain of decls was accumulated in reverse order. | |
967 | Put it into forward order, just for cleanliness. */ | |
968 | tree decls; | |
969 | int tmp = functionbody; | |
8d08fdba MS |
970 | int real_functionbody = current_binding_level->keep == 2 |
971 | ? ((functionbody = 0), tmp) : functionbody; | |
972 | tree tags = functionbody >= 0 ? current_binding_level->tags : 0; | |
973 | tree subblocks = functionbody >= 0 ? current_binding_level->blocks : 0; | |
974 | tree block = NULL_TREE; | |
975 | tree decl; | |
976 | int block_previously_created; | |
977 | ||
978 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, | |
979 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
980 | current_binding_level->parm_flag, | |
5566b478 | 981 | current_binding_level->keep); |
8d08fdba MS |
982 | |
983 | if (current_binding_level->keep == 1) | |
984 | keep = 1; | |
985 | ||
8d08fdba MS |
986 | /* Get the decls in the order they were written. |
987 | Usually current_binding_level->names is in reverse order. | |
988 | But parameter decls were previously put in forward order. */ | |
989 | ||
990 | if (reverse) | |
991 | current_binding_level->names | |
992 | = decls = nreverse (current_binding_level->names); | |
993 | else | |
994 | decls = current_binding_level->names; | |
995 | ||
996 | /* Output any nested inline functions within this block | |
997 | if they weren't already output. */ | |
998 | ||
999 | for (decl = decls; decl; decl = TREE_CHAIN (decl)) | |
1000 | if (TREE_CODE (decl) == FUNCTION_DECL | |
1001 | && ! TREE_ASM_WRITTEN (decl) | |
1002 | && DECL_INITIAL (decl) != NULL_TREE | |
6060a796 MS |
1003 | && TREE_ADDRESSABLE (decl) |
1004 | && decl_function_context (decl) == current_function_decl) | |
8d08fdba MS |
1005 | { |
1006 | /* If this decl was copied from a file-scope decl | |
1007 | on account of a block-scope extern decl, | |
1008 | propagate TREE_ADDRESSABLE to the file-scope decl. */ | |
1009 | if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE) | |
1010 | TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1; | |
1011 | else | |
1012 | { | |
1013 | push_function_context (); | |
1014 | output_inline_function (decl); | |
1015 | pop_function_context (); | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | /* If there were any declarations or structure tags in that level, | |
1020 | or if this level is a function body, | |
1021 | create a BLOCK to record them for the life of this function. */ | |
1022 | ||
1023 | block = NULL_TREE; | |
1024 | block_previously_created = (current_binding_level->this_block != NULL_TREE); | |
1025 | if (block_previously_created) | |
1026 | block = current_binding_level->this_block; | |
1027 | else if (keep == 1 || functionbody) | |
1028 | block = make_node (BLOCK); | |
1029 | if (block != NULL_TREE) | |
1030 | { | |
72b7eeff MS |
1031 | if (block_previously_created) |
1032 | { | |
1033 | if (decls || tags || subblocks) | |
1034 | { | |
be99da77 | 1035 | if (BLOCK_VARS (block) || BLOCK_TYPE_TAGS (block)) |
72b7eeff MS |
1036 | { |
1037 | warning ("internal compiler error: debugging info corrupted"); | |
1038 | } | |
1039 | BLOCK_VARS (block) = decls; | |
1040 | BLOCK_TYPE_TAGS (block) = tags; | |
be99da77 MS |
1041 | |
1042 | /* We can have previous subblocks and new subblocks when | |
1043 | doing fixup_gotos with complex cleanups. We chain the new | |
1044 | subblocks onto the end of any pre-existing subblocks. */ | |
1045 | BLOCK_SUBBLOCKS (block) = chainon (BLOCK_SUBBLOCKS (block), | |
1046 | subblocks); | |
72b7eeff | 1047 | } |
be99da77 MS |
1048 | /* If we created the block earlier on, and we are just |
1049 | diddling it now, then it already should have a proper | |
1050 | BLOCK_END_NOTE value associated with it. */ | |
72b7eeff MS |
1051 | } |
1052 | else | |
1053 | { | |
1054 | BLOCK_VARS (block) = decls; | |
1055 | BLOCK_TYPE_TAGS (block) = tags; | |
1056 | BLOCK_SUBBLOCKS (block) = subblocks; | |
1057 | /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */ | |
1058 | remember_end_note (block); | |
1059 | } | |
8d08fdba MS |
1060 | } |
1061 | ||
1062 | /* In each subblock, record that this is its superior. */ | |
1063 | ||
1064 | if (keep >= 0) | |
1065 | for (link = subblocks; link; link = TREE_CHAIN (link)) | |
1066 | BLOCK_SUPERCONTEXT (link) = block; | |
1067 | ||
1068 | /* Clear out the meanings of the local variables of this level. */ | |
1069 | ||
8d6e462b PB |
1070 | if (current_binding_level->is_for_scope && flag_new_for_scope == 1) |
1071 | { | |
2ee887f2 | 1072 | struct binding_level *outer = current_binding_level->level_chain; |
8d6e462b PB |
1073 | for (link = decls; link; link = TREE_CHAIN (link)) |
1074 | { | |
1075 | if (TREE_CODE (link) == VAR_DECL) | |
1076 | DECL_DEAD_FOR_LOCAL (link) = 1; | |
1077 | } | |
2ee887f2 MS |
1078 | |
1079 | /* Save declarations made in a 'for' statement so we can support pre-ANSI | |
1080 | 'for' scoping semantics. */ | |
1081 | ||
1082 | for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link)) | |
1083 | { | |
1084 | tree id = TREE_PURPOSE (link); | |
1085 | tree decl = IDENTIFIER_LOCAL_VALUE (id); | |
1086 | ||
1087 | /* In this case keep the dead for-decl visible, | |
1088 | but remember what (if anything) it shadowed. */ | |
1089 | DECL_SHADOWED_FOR_VAR (decl) = TREE_VALUE (link); | |
1090 | TREE_CHAIN (decl) = outer->dead_vars_from_for; | |
1091 | outer->dead_vars_from_for = decl; | |
1092 | } | |
8d6e462b | 1093 | } |
2ee887f2 | 1094 | else /* Not special for scope. */ |
8d6e462b PB |
1095 | { |
1096 | for (link = decls; link; link = TREE_CHAIN (link)) | |
1097 | { | |
1098 | if (DECL_NAME (link) != NULL_TREE) | |
8d08fdba | 1099 | { |
8d6e462b PB |
1100 | /* If the ident. was used or addressed via a local extern decl, |
1101 | don't forget that fact. */ | |
1102 | if (DECL_EXTERNAL (link)) | |
1103 | { | |
1104 | if (TREE_USED (link)) | |
1105 | TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1; | |
1106 | if (TREE_ADDRESSABLE (link)) | |
1107 | TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1; | |
1108 | } | |
1109 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE; | |
8d08fdba | 1110 | } |
8d08fdba | 1111 | } |
8d08fdba | 1112 | |
2ee887f2 MS |
1113 | /* Restore all name-meanings of the outer levels |
1114 | that were shadowed by this level. */ | |
8d08fdba | 1115 | |
2ee887f2 MS |
1116 | for (link = current_binding_level->shadowed; |
1117 | link; link = TREE_CHAIN (link)) | |
1118 | IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
1119 | ||
1120 | /* We first restore the regular decls and *then* the dead_vars_from_for | |
1121 | to handle this case: | |
1122 | ||
1123 | int i; // i#1 | |
1124 | { | |
1125 | for (int i; ; ) { ...} // i#2 | |
1126 | int i; // i#3 | |
1127 | } // we are here | |
1128 | ||
1129 | In this case, we want remove the binding for i#3, restoring | |
1130 | that of i#2. Then we want to remove the binding for i#2, | |
1131 | and restore that of i#1. */ | |
1132 | ||
1133 | link = current_binding_level->dead_vars_from_for; | |
1134 | for (; link != NULL_TREE; link = TREE_CHAIN (link)) | |
8d6e462b | 1135 | { |
2ee887f2 MS |
1136 | tree id = DECL_NAME (link); |
1137 | if (IDENTIFIER_LOCAL_VALUE (id) == link) | |
1138 | IDENTIFIER_LOCAL_VALUE (id) = DECL_SHADOWED_FOR_VAR (link); | |
8d6e462b PB |
1139 | } |
1140 | ||
2ee887f2 MS |
1141 | for (link = current_binding_level->class_shadowed; |
1142 | link; link = TREE_CHAIN (link)) | |
1143 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
1144 | for (link = current_binding_level->type_shadowed; | |
1145 | link; link = TREE_CHAIN (link)) | |
1146 | IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
8d6e462b | 1147 | } |
8d08fdba MS |
1148 | |
1149 | /* If the level being exited is the top level of a function, | |
1150 | check over all the labels. */ | |
1151 | ||
1152 | if (functionbody) | |
1153 | { | |
1154 | /* If this is the top level block of a function, | |
1155 | the vars are the function's parameters. | |
1156 | Don't leave them in the BLOCK because they are | |
1157 | found in the FUNCTION_DECL instead. */ | |
1158 | ||
1159 | BLOCK_VARS (block) = 0; | |
1160 | ||
1161 | /* Clear out the definitions of all label names, | |
1162 | since their scopes end here. */ | |
1163 | ||
1164 | for (link = named_labels; link; link = TREE_CHAIN (link)) | |
1165 | { | |
1166 | register tree label = TREE_VALUE (link); | |
1167 | ||
1168 | if (DECL_INITIAL (label) == NULL_TREE) | |
1169 | { | |
1170 | cp_error_at ("label `%D' used but not defined", label); | |
1171 | /* Avoid crashing later. */ | |
1172 | define_label (input_filename, 1, DECL_NAME (label)); | |
1173 | } | |
1174 | else if (warn_unused && !TREE_USED (label)) | |
1175 | cp_warning_at ("label `%D' defined but not used", label); | |
1176 | SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), NULL_TREE); | |
1177 | ||
1178 | /* Put the labels into the "variables" of the | |
1179 | top-level block, so debugger can see them. */ | |
1180 | TREE_CHAIN (label) = BLOCK_VARS (block); | |
1181 | BLOCK_VARS (block) = label; | |
1182 | } | |
1183 | ||
1184 | named_labels = NULL_TREE; | |
1185 | } | |
1186 | ||
1187 | /* Any uses of undefined labels now operate under constraints | |
1188 | of next binding contour. */ | |
1189 | { | |
1190 | struct binding_level *level_chain; | |
1191 | level_chain = current_binding_level->level_chain; | |
1192 | if (level_chain) | |
1193 | { | |
1194 | tree labels; | |
1195 | for (labels = named_label_uses; labels; labels = TREE_CHAIN (labels)) | |
1196 | if (TREE_TYPE (labels) == (tree)current_binding_level) | |
1197 | { | |
1198 | TREE_TYPE (labels) = (tree)level_chain; | |
1199 | TREE_PURPOSE (labels) = level_chain->names; | |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | tmp = current_binding_level->keep; | |
1205 | ||
1206 | pop_binding_level (); | |
1207 | if (functionbody) | |
1208 | DECL_INITIAL (current_function_decl) = block; | |
1209 | else if (block) | |
1210 | { | |
1211 | if (!block_previously_created) | |
1212 | current_binding_level->blocks | |
1213 | = chainon (current_binding_level->blocks, block); | |
1214 | } | |
1215 | /* If we did not make a block for the level just exited, | |
1216 | any blocks made for inner levels | |
1217 | (since they cannot be recorded as subblocks in that level) | |
1218 | must be carried forward so they will later become subblocks | |
1219 | of something else. */ | |
1220 | else if (subblocks) | |
1221 | { | |
1222 | if (keep == 2) | |
1223 | current_binding_level->blocks | |
1224 | = chainon (subblocks, current_binding_level->blocks); | |
1225 | else | |
1226 | current_binding_level->blocks | |
1227 | = chainon (current_binding_level->blocks, subblocks); | |
1228 | } | |
1229 | ||
1230 | /* Take care of compiler's internal binding structures. */ | |
a4443a08 | 1231 | if (tmp == 2) |
8d08fdba | 1232 | { |
8d08fdba MS |
1233 | expand_end_bindings (getdecls (), keep, 1); |
1234 | /* Each and every BLOCK node created here in `poplevel' is important | |
1235 | (e.g. for proper debugging information) so if we created one | |
1236 | earlier, mark it as "used". */ | |
1237 | if (block) | |
1238 | TREE_USED (block) = 1; | |
1239 | block = poplevel (keep, reverse, real_functionbody); | |
1240 | } | |
1241 | ||
1242 | /* Each and every BLOCK node created here in `poplevel' is important | |
1243 | (e.g. for proper debugging information) so if we created one | |
1244 | earlier, mark it as "used". */ | |
1245 | if (block) | |
1246 | TREE_USED (block) = 1; | |
1247 | return block; | |
1248 | } | |
1249 | ||
a9aedbc2 MS |
1250 | /* Resume a binding level for a namespace. */ |
1251 | void | |
1252 | resume_level (b) | |
1253 | struct binding_level *b; | |
1254 | { | |
1255 | tree decls, link; | |
1256 | ||
1257 | resume_binding_level (b); | |
1258 | ||
1259 | /* Resume the variable caches. */ | |
1260 | decls = current_binding_level->names; | |
1261 | ||
1262 | /* Restore the meanings of the local variables of this level. */ | |
1263 | ||
1264 | for (link = decls; link; link = TREE_CHAIN (link)) | |
1265 | { | |
cffa8729 MS |
1266 | /* If it doesn't have a name, there is nothing left to do with it. */ |
1267 | if (DECL_NAME (link) == NULL_TREE) | |
1268 | continue; | |
1269 | ||
1270 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = link; | |
a9aedbc2 MS |
1271 | |
1272 | /* If this is a TYPE_DECL, push it into the type value slot. */ | |
1273 | if (TREE_CODE (link) == TYPE_DECL) | |
1274 | SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (link), TREE_TYPE (link)); | |
1275 | } | |
1276 | } | |
1277 | ||
8d08fdba MS |
1278 | /* Delete the node BLOCK from the current binding level. |
1279 | This is used for the block inside a stmt expr ({...}) | |
1280 | so that the block can be reinserted where appropriate. */ | |
1281 | ||
1282 | void | |
1283 | delete_block (block) | |
1284 | tree block; | |
1285 | { | |
1286 | tree t; | |
1287 | if (current_binding_level->blocks == block) | |
1288 | current_binding_level->blocks = TREE_CHAIN (block); | |
1289 | for (t = current_binding_level->blocks; t;) | |
1290 | { | |
1291 | if (TREE_CHAIN (t) == block) | |
1292 | TREE_CHAIN (t) = TREE_CHAIN (block); | |
1293 | else | |
1294 | t = TREE_CHAIN (t); | |
1295 | } | |
1296 | TREE_CHAIN (block) = NULL_TREE; | |
1297 | /* Clear TREE_USED which is always set by poplevel. | |
1298 | The flag is set again if insert_block is called. */ | |
1299 | TREE_USED (block) = 0; | |
1300 | } | |
1301 | ||
1302 | /* Insert BLOCK at the end of the list of subblocks of the | |
1303 | current binding level. This is used when a BIND_EXPR is expanded, | |
1304 | to handle the BLOCK node inside the BIND_EXPR. */ | |
1305 | ||
1306 | void | |
1307 | insert_block (block) | |
1308 | tree block; | |
1309 | { | |
1310 | TREE_USED (block) = 1; | |
1311 | current_binding_level->blocks | |
1312 | = chainon (current_binding_level->blocks, block); | |
1313 | } | |
1314 | ||
1315 | /* Add BLOCK to the current list of blocks for this binding contour. */ | |
1316 | void | |
1317 | add_block_current_level (block) | |
1318 | tree block; | |
1319 | { | |
1320 | current_binding_level->blocks | |
1321 | = chainon (current_binding_level->blocks, block); | |
1322 | } | |
1323 | ||
1324 | /* Set the BLOCK node for the innermost scope | |
1325 | (the one we are currently in). */ | |
1326 | ||
1327 | void | |
1328 | set_block (block) | |
1329 | register tree block; | |
1330 | { | |
1331 | current_binding_level->this_block = block; | |
1332 | } | |
1333 | ||
1334 | /* Do a pushlevel for class declarations. */ | |
1335 | void | |
1336 | pushlevel_class () | |
1337 | { | |
1338 | register struct binding_level *newlevel; | |
1339 | ||
1340 | /* Reuse or create a struct for this binding level. */ | |
1341 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1342 | if (0) | |
1343 | #else /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1344 | if (free_binding_level) | |
1345 | #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */ | |
1346 | { | |
1347 | newlevel = free_binding_level; | |
1348 | free_binding_level = free_binding_level->level_chain; | |
1349 | } | |
1350 | else | |
1351 | { | |
cffa8729 | 1352 | newlevel = make_binding_level (); |
8d08fdba MS |
1353 | } |
1354 | ||
1355 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1356 | is_class_level = 1; | |
1357 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1358 | ||
1359 | push_binding_level (newlevel, 0, 0); | |
1360 | ||
1361 | decl_stack = push_decl_level (decl_stack, &decl_obstack); | |
1362 | class_binding_level = current_binding_level; | |
1363 | class_binding_level->parm_flag = 2; | |
1364 | /* We have just pushed into a new binding level. Now, fake out the rest | |
1365 | of the compiler. Set the `current_binding_level' back to point to | |
1366 | the most closely containing non-class binding level. */ | |
1367 | do | |
1368 | { | |
1369 | current_binding_level = current_binding_level->level_chain; | |
1370 | } | |
1371 | while (current_binding_level->parm_flag == 2); | |
1372 | } | |
1373 | ||
700f8a87 MS |
1374 | /* ...and a poplevel for class declarations. FORCE is used to force |
1375 | clearing out of CLASS_VALUEs after a class definition. */ | |
8d08fdba | 1376 | tree |
700f8a87 MS |
1377 | poplevel_class (force) |
1378 | int force; | |
8d08fdba MS |
1379 | { |
1380 | register struct binding_level *level = class_binding_level; | |
1381 | tree block = NULL_TREE; | |
1382 | tree shadowed; | |
1383 | ||
1384 | my_friendly_assert (level != 0, 354); | |
1385 | ||
1386 | decl_stack = pop_stack_level (decl_stack); | |
1387 | for (shadowed = level->shadowed; shadowed; shadowed = TREE_CHAIN (shadowed)) | |
1388 | IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed); | |
1389 | /* If we're leaving a toplevel class, don't bother to do the setting | |
ddd5a7c1 | 1390 | of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot |
8d08fdba | 1391 | shouldn't even be used when current_class_type isn't set, and second, |
ddd5a7c1 | 1392 | if we don't touch it here, we're able to use the cache effect if the |
8d08fdba | 1393 | next time we're entering a class scope, it is the same class. */ |
700f8a87 | 1394 | if (current_class_depth != 1 || force) |
8d08fdba MS |
1395 | for (shadowed = level->class_shadowed; |
1396 | shadowed; | |
1397 | shadowed = TREE_CHAIN (shadowed)) | |
1398 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed); | |
1399 | else | |
1400 | /* Remember to save what IDENTIFIER's were bound in this scope so we | |
1401 | can recover from cache misses. */ | |
1402 | previous_class_values = class_binding_level->class_shadowed; | |
1403 | for (shadowed = level->type_shadowed; | |
1404 | shadowed; | |
1405 | shadowed = TREE_CHAIN (shadowed)) | |
1406 | IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed); | |
1407 | ||
1408 | GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level, | |
1409 | (HOST_WIDE_INT) class_binding_level->level_chain, | |
1410 | class_binding_level->parm_flag, | |
5566b478 | 1411 | class_binding_level->keep); |
8d08fdba MS |
1412 | |
1413 | if (class_binding_level->parm_flag != 2) | |
1414 | class_binding_level = (struct binding_level *)0; | |
1415 | ||
1416 | /* Now, pop out of the the binding level which we created up in the | |
1417 | `pushlevel_class' routine. */ | |
1418 | #if defined(DEBUG_CP_BINDING_LEVELS) | |
1419 | is_class_level = 1; | |
1420 | #endif /* defined(DEBUG_CP_BINDING_LEVELS) */ | |
1421 | ||
1422 | pop_binding_level (); | |
1423 | ||
1424 | return block; | |
1425 | } | |
1426 | \f | |
1427 | /* For debugging. */ | |
5566b478 MS |
1428 | static int no_print_functions = 0; |
1429 | static int no_print_builtins = 0; | |
8d08fdba MS |
1430 | |
1431 | void | |
1432 | print_binding_level (lvl) | |
1433 | struct binding_level *lvl; | |
1434 | { | |
1435 | tree t; | |
1436 | int i = 0, len; | |
1437 | fprintf (stderr, " blocks="); | |
1438 | fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks); | |
1439 | fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d", | |
f30432d7 | 1440 | list_length (lvl->incomplete), lvl->parm_flag, lvl->keep); |
8d08fdba MS |
1441 | if (lvl->tag_transparent) |
1442 | fprintf (stderr, " tag-transparent"); | |
1443 | if (lvl->more_cleanups_ok) | |
1444 | fprintf (stderr, " more-cleanups-ok"); | |
1445 | if (lvl->have_cleanups) | |
1446 | fprintf (stderr, " have-cleanups"); | |
8d08fdba MS |
1447 | fprintf (stderr, "\n"); |
1448 | if (lvl->names) | |
1449 | { | |
1450 | fprintf (stderr, " names:\t"); | |
1451 | /* We can probably fit 3 names to a line? */ | |
1452 | for (t = lvl->names; t; t = TREE_CHAIN (t)) | |
1453 | { | |
1454 | if (no_print_functions && (TREE_CODE(t) == FUNCTION_DECL)) | |
1455 | continue; | |
1456 | if (no_print_builtins | |
1457 | && (TREE_CODE(t) == TYPE_DECL) | |
1458 | && (!strcmp(DECL_SOURCE_FILE(t),"<built-in>"))) | |
1459 | continue; | |
1460 | ||
1461 | /* Function decls tend to have longer names. */ | |
1462 | if (TREE_CODE (t) == FUNCTION_DECL) | |
1463 | len = 3; | |
1464 | else | |
1465 | len = 2; | |
1466 | i += len; | |
1467 | if (i > 6) | |
1468 | { | |
1469 | fprintf (stderr, "\n\t"); | |
1470 | i = len; | |
1471 | } | |
1472 | print_node_brief (stderr, "", t, 0); | |
1473 | if (TREE_CODE (t) == ERROR_MARK) | |
1474 | break; | |
1475 | } | |
1476 | if (i) | |
1477 | fprintf (stderr, "\n"); | |
1478 | } | |
1479 | if (lvl->tags) | |
1480 | { | |
1481 | fprintf (stderr, " tags:\t"); | |
1482 | i = 0; | |
1483 | for (t = lvl->tags; t; t = TREE_CHAIN (t)) | |
1484 | { | |
1485 | if (TREE_PURPOSE (t) == NULL_TREE) | |
1486 | len = 3; | |
1487 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
1488 | len = 2; | |
1489 | else | |
1490 | len = 4; | |
1491 | i += len; | |
1492 | if (i > 5) | |
1493 | { | |
1494 | fprintf (stderr, "\n\t"); | |
1495 | i = len; | |
1496 | } | |
1497 | if (TREE_PURPOSE (t) == NULL_TREE) | |
1498 | { | |
1499 | print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0); | |
1500 | fprintf (stderr, ">"); | |
1501 | } | |
1502 | else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t))) | |
1503 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
1504 | else | |
1505 | { | |
1506 | print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0); | |
1507 | print_node_brief (stderr, "", TREE_VALUE (t), 0); | |
1508 | fprintf (stderr, ">"); | |
1509 | } | |
1510 | } | |
1511 | if (i) | |
1512 | fprintf (stderr, "\n"); | |
1513 | } | |
1514 | if (lvl->shadowed) | |
1515 | { | |
1516 | fprintf (stderr, " shadowed:"); | |
1517 | for (t = lvl->shadowed; t; t = TREE_CHAIN (t)) | |
1518 | { | |
1519 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); | |
1520 | } | |
1521 | fprintf (stderr, "\n"); | |
1522 | } | |
1523 | if (lvl->class_shadowed) | |
1524 | { | |
1525 | fprintf (stderr, " class-shadowed:"); | |
1526 | for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t)) | |
1527 | { | |
1528 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); | |
1529 | } | |
1530 | fprintf (stderr, "\n"); | |
1531 | } | |
1532 | if (lvl->type_shadowed) | |
1533 | { | |
1534 | fprintf (stderr, " type-shadowed:"); | |
1535 | for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t)) | |
1536 | { | |
8d08fdba | 1537 | fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t))); |
8d08fdba MS |
1538 | } |
1539 | fprintf (stderr, "\n"); | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | void | |
1544 | print_other_binding_stack (stack) | |
1545 | struct binding_level *stack; | |
1546 | { | |
1547 | struct binding_level *level; | |
1548 | for (level = stack; level != global_binding_level; level = level->level_chain) | |
1549 | { | |
1550 | fprintf (stderr, "binding level "); | |
1551 | fprintf (stderr, HOST_PTR_PRINTF, level); | |
1552 | fprintf (stderr, "\n"); | |
1553 | print_binding_level (level); | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | void | |
1558 | print_binding_stack () | |
1559 | { | |
1560 | struct binding_level *b; | |
1561 | fprintf (stderr, "current_binding_level="); | |
1562 | fprintf (stderr, HOST_PTR_PRINTF, current_binding_level); | |
1563 | fprintf (stderr, "\nclass_binding_level="); | |
1564 | fprintf (stderr, HOST_PTR_PRINTF, class_binding_level); | |
1565 | fprintf (stderr, "\nglobal_binding_level="); | |
1566 | fprintf (stderr, HOST_PTR_PRINTF, global_binding_level); | |
1567 | fprintf (stderr, "\n"); | |
1568 | if (class_binding_level) | |
1569 | { | |
1570 | for (b = class_binding_level; b; b = b->level_chain) | |
1571 | if (b == current_binding_level) | |
1572 | break; | |
1573 | if (b) | |
1574 | b = class_binding_level; | |
1575 | else | |
1576 | b = current_binding_level; | |
1577 | } | |
1578 | else | |
1579 | b = current_binding_level; | |
1580 | print_other_binding_stack (b); | |
1581 | fprintf (stderr, "global:\n"); | |
1582 | print_binding_level (global_binding_level); | |
1583 | } | |
a9aedbc2 | 1584 | |
dff6b454 RK |
1585 | extern char * first_global_object_name; |
1586 | ||
1587 | /* Get a unique name for each call to this routine for unnamed namespaces. | |
1588 | Mostly copied from get_file_function_name. */ | |
1589 | static tree | |
1590 | get_unique_name () | |
1591 | { | |
1592 | static int temp_name_counter = 0; | |
1593 | char *buf; | |
1594 | register char *p; | |
1595 | ||
1596 | if (first_global_object_name) | |
1597 | p = first_global_object_name; | |
1598 | else if (main_input_filename) | |
1599 | p = main_input_filename; | |
1600 | else | |
1601 | p = input_filename; | |
1602 | ||
1603 | #define UNNAMED_NAMESPACE_FORMAT "__%s_%d" | |
1604 | ||
1605 | buf = (char *) alloca (sizeof (UNNAMED_NAMESPACE_FORMAT) + strlen (p)); | |
1606 | ||
1607 | sprintf (buf, UNNAMED_NAMESPACE_FORMAT, p, temp_name_counter++); | |
1608 | ||
1609 | /* Don't need to pull weird characters out of global names. */ | |
1610 | if (p != first_global_object_name) | |
1611 | { | |
1612 | for (p = buf+11; *p; p++) | |
1613 | if (! ((*p >= '0' && *p <= '9') | |
dff6b454 RK |
1614 | #ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */ |
1615 | || *p == '$' | |
1616 | #endif | |
1617 | #ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */ | |
1618 | || *p == '.' | |
1619 | #endif | |
1620 | || (*p >= 'A' && *p <= 'Z') | |
1621 | || (*p >= 'a' && *p <= 'z'))) | |
1622 | *p = '_'; | |
1623 | } | |
1624 | ||
1625 | return get_identifier (buf); | |
1626 | } | |
1627 | ||
1628 | /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we | |
1629 | select a name that is unique to this compilation unit. */ | |
a9aedbc2 MS |
1630 | void |
1631 | push_namespace (name) | |
1632 | tree name; | |
1633 | { | |
1634 | extern tree current_namespace; | |
1635 | tree old_id = get_namespace_id (); | |
1636 | char *buf; | |
72b7eeff | 1637 | tree d; |
a9aedbc2 | 1638 | |
dff6b454 RK |
1639 | if (! name) |
1640 | { | |
abc95ed3 | 1641 | /* Create a truly ugly name! */ |
dff6b454 RK |
1642 | name = get_unique_name (); |
1643 | } | |
1644 | ||
72b7eeff MS |
1645 | d = build_lang_decl (NAMESPACE_DECL, name, void_type_node); |
1646 | ||
a9aedbc2 MS |
1647 | /* Mark them as external, so redeclaration_error_message doesn't think |
1648 | they are duplicates. */ | |
72b7eeff | 1649 | |
a9aedbc2 MS |
1650 | DECL_EXTERNAL (d) = 1; |
1651 | d = pushdecl (d); | |
1652 | ||
1653 | if (NAMESPACE_LEVEL (d) == 0) | |
1654 | { | |
1655 | /* This is new for this compilation unit. */ | |
1656 | pushlevel (0); | |
1657 | declare_namespace_level (); | |
72b7eeff | 1658 | NAMESPACE_LEVEL (d) = current_binding_level; |
a9aedbc2 MS |
1659 | } |
1660 | else | |
72b7eeff | 1661 | resume_level (NAMESPACE_LEVEL (d)); |
a9aedbc2 MS |
1662 | |
1663 | /* This code is just is bit old now... */ | |
1664 | current_namespace = tree_cons (NULL_TREE, name, current_namespace); | |
1665 | buf = (char *) alloca (4 + (old_id ? IDENTIFIER_LENGTH (old_id) : 0) | |
1666 | + IDENTIFIER_LENGTH (name)); | |
1667 | sprintf (buf, "%s%s", old_id ? IDENTIFIER_POINTER (old_id) : "", | |
1668 | IDENTIFIER_POINTER (name)); | |
1669 | TREE_PURPOSE (current_namespace) = get_identifier (buf); | |
1670 | } | |
1671 | ||
1672 | /* Pop from the scope of the current namespace. */ | |
1673 | void | |
1674 | pop_namespace () | |
1675 | { | |
1676 | extern tree current_namespace; | |
1677 | tree decls, link; | |
1678 | current_namespace = TREE_CHAIN (current_namespace); | |
1679 | ||
1680 | /* Just in case we get out of sync. */ | |
1681 | if (! namespace_bindings_p ()) | |
1682 | poplevel (0, 0, 0); | |
1683 | ||
1684 | decls = current_binding_level->names; | |
1685 | ||
1686 | /* Clear out the meanings of the local variables of this level. */ | |
1687 | ||
1688 | for (link = decls; link; link = TREE_CHAIN (link)) | |
1689 | { | |
1690 | if (DECL_NAME (link) != NULL_TREE) | |
1691 | { | |
1692 | /* If the ident. was used or addressed via a local extern decl, | |
1693 | don't forget that fact. */ | |
1694 | if (DECL_EXTERNAL (link)) | |
1695 | { | |
1696 | if (TREE_USED (link)) | |
1697 | TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1; | |
1698 | if (TREE_ADDRESSABLE (link)) | |
1699 | TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1; | |
1700 | } | |
1701 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE; | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | /* Restore all name-meanings of the outer levels | |
1706 | that were shadowed by this level. */ | |
1707 | ||
1708 | for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link)) | |
1709 | IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
1710 | for (link = current_binding_level->class_shadowed; | |
1711 | link; link = TREE_CHAIN (link)) | |
1712 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
1713 | for (link = current_binding_level->type_shadowed; | |
1714 | link; link = TREE_CHAIN (link)) | |
1715 | IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
1716 | ||
1717 | /* suspend a level. */ | |
1718 | suspend_binding_level (); | |
1719 | } | |
8d08fdba MS |
1720 | \f |
1721 | /* Subroutines for reverting temporarily to top-level for instantiation | |
1722 | of templates and such. We actually need to clear out the class- and | |
1723 | local-value slots of all identifiers, so that only the global values | |
1724 | are at all visible. Simply setting current_binding_level to the global | |
1725 | scope isn't enough, because more binding levels may be pushed. */ | |
1726 | struct saved_scope { | |
1727 | struct binding_level *old_binding_level; | |
1728 | tree old_bindings; | |
1729 | struct saved_scope *prev; | |
5f34005f | 1730 | tree class_name, class_type, function_decl; |
28cbf42c | 1731 | tree base_init_list, member_init_list; |
8d08fdba | 1732 | struct binding_level *class_bindings; |
5566b478 | 1733 | tree previous_class_type, previous_class_values; |
51c184be MS |
1734 | tree *lang_base, *lang_stack, lang_name; |
1735 | int lang_stacksize; | |
1736 | tree named_labels; | |
5566b478 MS |
1737 | int minimal_parse_mode; |
1738 | tree last_function_parms; | |
8d08fdba MS |
1739 | }; |
1740 | static struct saved_scope *current_saved_scope; | |
1741 | extern tree prev_class_type; | |
1742 | ||
45537677 MS |
1743 | tree |
1744 | store_bindings (names, old_bindings) | |
1745 | tree names, old_bindings; | |
1746 | { | |
1747 | tree t; | |
1748 | for (t = names; t; t = TREE_CHAIN (t)) | |
1749 | { | |
1750 | tree binding, t1, id; | |
1751 | ||
1752 | if (TREE_CODE (t) == TREE_LIST) | |
1753 | id = TREE_PURPOSE (t); | |
1754 | else | |
1755 | id = DECL_NAME (t); | |
1756 | ||
1757 | if (!id | |
1758 | || (!IDENTIFIER_LOCAL_VALUE (id) | |
1759 | && !IDENTIFIER_CLASS_VALUE (id))) | |
1760 | continue; | |
1761 | ||
1762 | for (t1 = old_bindings; t1; t1 = TREE_CHAIN (t1)) | |
1763 | if (TREE_VEC_ELT (t1, 0) == id) | |
1764 | goto skip_it; | |
1765 | ||
1766 | binding = make_tree_vec (4); | |
1767 | if (id) | |
1768 | { | |
1769 | my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135); | |
1770 | TREE_VEC_ELT (binding, 0) = id; | |
1771 | TREE_VEC_ELT (binding, 1) = IDENTIFIER_TYPE_VALUE (id); | |
1772 | TREE_VEC_ELT (binding, 2) = IDENTIFIER_LOCAL_VALUE (id); | |
1773 | TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id); | |
1774 | IDENTIFIER_LOCAL_VALUE (id) = NULL_TREE; | |
1775 | IDENTIFIER_CLASS_VALUE (id) = NULL_TREE; | |
1776 | } | |
1777 | TREE_CHAIN (binding) = old_bindings; | |
1778 | old_bindings = binding; | |
1779 | skip_it: | |
1780 | ; | |
1781 | } | |
1782 | return old_bindings; | |
1783 | } | |
1784 | ||
8d08fdba | 1785 | void |
5566b478 MS |
1786 | maybe_push_to_top_level (pseudo) |
1787 | int pseudo; | |
8d08fdba | 1788 | { |
51c184be | 1789 | extern int current_lang_stacksize; |
8d08fdba MS |
1790 | struct saved_scope *s = |
1791 | (struct saved_scope *) xmalloc (sizeof (struct saved_scope)); | |
5566b478 | 1792 | struct binding_level *b = inner_binding_level; |
8d08fdba MS |
1793 | tree old_bindings = NULL_TREE; |
1794 | ||
1795 | /* Have to include global_binding_level, because class-level decls | |
1796 | aren't listed anywhere useful. */ | |
1797 | for (; b; b = b->level_chain) | |
1798 | { | |
1799 | tree t; | |
1800 | ||
5566b478 MS |
1801 | if (b == global_binding_level || (pseudo && b->pseudo_global)) |
1802 | break; | |
8d08fdba | 1803 | |
45537677 | 1804 | old_bindings = store_bindings (b->names, old_bindings); |
cffa8729 | 1805 | /* We also need to check class_shadowed to save class-level type |
45537677 MS |
1806 | bindings, since pushclass doesn't fill in b->names. */ |
1807 | if (b->parm_flag == 2) | |
cffa8729 | 1808 | old_bindings = store_bindings (b->class_shadowed, old_bindings); |
8d08fdba | 1809 | |
8d08fdba MS |
1810 | /* Unwind type-value slots back to top level. */ |
1811 | for (t = b->type_shadowed; t; t = TREE_CHAIN (t)) | |
1812 | SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t)); | |
1813 | } | |
1814 | /* Clear out class-level bindings cache. */ | |
1815 | if (current_binding_level == global_binding_level | |
1816 | && previous_class_type != NULL_TREE) | |
1817 | { | |
1818 | popclass (-1); | |
1819 | previous_class_type = NULL_TREE; | |
1820 | } | |
1821 | ||
1822 | s->old_binding_level = current_binding_level; | |
5566b478 | 1823 | current_binding_level = b; |
8d08fdba MS |
1824 | |
1825 | s->class_name = current_class_name; | |
1826 | s->class_type = current_class_type; | |
8d08fdba | 1827 | s->function_decl = current_function_decl; |
28cbf42c MS |
1828 | s->base_init_list = current_base_init_list; |
1829 | s->member_init_list = current_member_init_list; | |
8d08fdba MS |
1830 | s->class_bindings = class_binding_level; |
1831 | s->previous_class_type = previous_class_type; | |
5566b478 | 1832 | s->previous_class_values = previous_class_values; |
51c184be MS |
1833 | s->lang_stack = current_lang_stack; |
1834 | s->lang_base = current_lang_base; | |
1835 | s->lang_stacksize = current_lang_stacksize; | |
1836 | s->lang_name = current_lang_name; | |
1837 | s->named_labels = named_labels; | |
5566b478 MS |
1838 | s->minimal_parse_mode = minimal_parse_mode; |
1839 | s->last_function_parms = last_function_parms; | |
5f34005f | 1840 | current_class_name = current_class_type = NULL_TREE; |
8d08fdba MS |
1841 | current_function_decl = NULL_TREE; |
1842 | class_binding_level = (struct binding_level *)0; | |
1843 | previous_class_type = NULL_TREE; | |
51c184be MS |
1844 | current_lang_stacksize = 10; |
1845 | current_lang_stack = current_lang_base | |
1846 | = (tree *) xmalloc (current_lang_stacksize * sizeof (tree)); | |
1847 | current_lang_name = lang_name_cplusplus; | |
1848 | strict_prototype = strict_prototypes_lang_cplusplus; | |
1849 | named_labels = NULL_TREE; | |
5566b478 | 1850 | minimal_parse_mode = 0; |
8d08fdba MS |
1851 | |
1852 | s->prev = current_saved_scope; | |
1853 | s->old_bindings = old_bindings; | |
1854 | current_saved_scope = s; | |
5566b478 MS |
1855 | |
1856 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
1857 | } | |
1858 | ||
1859 | void | |
1860 | push_to_top_level () | |
1861 | { | |
1862 | maybe_push_to_top_level (0); | |
8d08fdba MS |
1863 | } |
1864 | ||
1865 | void | |
1866 | pop_from_top_level () | |
1867 | { | |
51c184be | 1868 | extern int current_lang_stacksize; |
8d08fdba MS |
1869 | struct saved_scope *s = current_saved_scope; |
1870 | tree t; | |
1871 | ||
1872 | if (previous_class_type) | |
1873 | previous_class_type = NULL_TREE; | |
1874 | ||
5566b478 MS |
1875 | pop_obstacks (); |
1876 | ||
8d08fdba MS |
1877 | current_binding_level = s->old_binding_level; |
1878 | current_saved_scope = s->prev; | |
1879 | for (t = s->old_bindings; t; t = TREE_CHAIN (t)) | |
1880 | { | |
1881 | tree id = TREE_VEC_ELT (t, 0); | |
1882 | if (id) | |
1883 | { | |
1884 | IDENTIFIER_TYPE_VALUE (id) = TREE_VEC_ELT (t, 1); | |
1885 | IDENTIFIER_LOCAL_VALUE (id) = TREE_VEC_ELT (t, 2); | |
1886 | IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3); | |
1887 | } | |
1888 | } | |
1889 | current_class_name = s->class_name; | |
1890 | current_class_type = s->class_type; | |
28cbf42c MS |
1891 | current_base_init_list = s->base_init_list; |
1892 | current_member_init_list = s->member_init_list; | |
8d08fdba MS |
1893 | current_function_decl = s->function_decl; |
1894 | class_binding_level = s->class_bindings; | |
1895 | previous_class_type = s->previous_class_type; | |
5566b478 | 1896 | previous_class_values = s->previous_class_values; |
51c184be MS |
1897 | free (current_lang_base); |
1898 | current_lang_base = s->lang_base; | |
1899 | current_lang_stack = s->lang_stack; | |
1900 | current_lang_name = s->lang_name; | |
1901 | current_lang_stacksize = s->lang_stacksize; | |
1902 | if (current_lang_name == lang_name_cplusplus) | |
1903 | strict_prototype = strict_prototypes_lang_cplusplus; | |
1904 | else if (current_lang_name == lang_name_c) | |
1905 | strict_prototype = strict_prototypes_lang_c; | |
1906 | named_labels = s->named_labels; | |
5566b478 MS |
1907 | minimal_parse_mode = s->minimal_parse_mode; |
1908 | last_function_parms = s->last_function_parms; | |
51c184be | 1909 | |
8d08fdba MS |
1910 | free (s); |
1911 | } | |
1912 | \f | |
1913 | /* Push a definition of struct, union or enum tag "name". | |
1914 | into binding_level "b". "type" should be the type node, | |
1915 | We assume that the tag "name" is not already defined. | |
1916 | ||
1917 | Note that the definition may really be just a forward reference. | |
1918 | In that case, the TYPE_SIZE will be a NULL_TREE. | |
1919 | ||
1920 | C++ gratuitously puts all these tags in the name space. */ | |
1921 | ||
1922 | /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID, | |
1923 | record the shadowed value for this binding contour. TYPE is | |
1924 | the type that ID maps to. */ | |
1925 | ||
1926 | static void | |
1927 | set_identifier_type_value_with_scope (id, type, b) | |
1928 | tree id; | |
1929 | tree type; | |
1930 | struct binding_level *b; | |
1931 | { | |
1932 | if (b != global_binding_level) | |
1933 | { | |
1934 | tree old_type_value = IDENTIFIER_TYPE_VALUE (id); | |
1935 | b->type_shadowed | |
1936 | = tree_cons (id, old_type_value, b->type_shadowed); | |
1937 | } | |
1938 | SET_IDENTIFIER_TYPE_VALUE (id, type); | |
1939 | } | |
1940 | ||
1941 | /* As set_identifier_type_value_with_scope, but using inner_binding_level. */ | |
1942 | ||
1943 | void | |
1944 | set_identifier_type_value (id, type) | |
1945 | tree id; | |
1946 | tree type; | |
1947 | { | |
1948 | set_identifier_type_value_with_scope (id, type, inner_binding_level); | |
1949 | } | |
1950 | ||
1951 | /* Subroutine "set_nested_typename" builds the nested-typename of | |
1952 | the type decl in question. (Argument CLASSNAME can actually be | |
1953 | a function as well, if that's the smallest containing scope.) */ | |
1954 | ||
5566b478 | 1955 | void |
8d08fdba MS |
1956 | set_nested_typename (decl, classname, name, type) |
1957 | tree decl, classname, name, type; | |
1958 | { | |
e1cd6e56 | 1959 | char *buf; |
8d08fdba | 1960 | my_friendly_assert (TREE_CODE (decl) == TYPE_DECL, 136); |
8ccc31eb MS |
1961 | |
1962 | /* No need to do this for anonymous names, since they're unique. */ | |
1963 | if (ANON_AGGRNAME_P (name)) | |
1964 | { | |
1965 | DECL_NESTED_TYPENAME (decl) = name; | |
1966 | return; | |
1967 | } | |
1968 | ||
e1cd6e56 MS |
1969 | if (classname == NULL_TREE) |
1970 | classname = get_identifier (""); | |
1971 | ||
1972 | my_friendly_assert (TREE_CODE (classname) == IDENTIFIER_NODE, 137); | |
1973 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 138); | |
1974 | buf = (char *) alloca (4 + IDENTIFIER_LENGTH (classname) | |
1975 | + IDENTIFIER_LENGTH (name)); | |
1976 | sprintf (buf, "%s::%s", IDENTIFIER_POINTER (classname), | |
1977 | IDENTIFIER_POINTER (name)); | |
1978 | DECL_NESTED_TYPENAME (decl) = get_identifier (buf); | |
1979 | TREE_MANGLED (DECL_NESTED_TYPENAME (decl)) = 1; | |
1980 | ||
8ccc31eb MS |
1981 | /* Create an extra decl so that the nested name will have a type value |
1982 | where appropriate. */ | |
1983 | { | |
1984 | tree nested, type_decl; | |
1985 | nested = DECL_NESTED_TYPENAME (decl); | |
1986 | type_decl = build_decl (TYPE_DECL, nested, type); | |
1987 | DECL_NESTED_TYPENAME (type_decl) = nested; | |
1988 | SET_DECL_ARTIFICIAL (type_decl); | |
b7484fbe MS |
1989 | /* Mark the TYPE_DECL node created just above as a gratuitous one so that |
1990 | dwarfout.c will know not to generate a TAG_typedef DIE for it, and | |
1991 | sdbout.c won't try to output a .def for "::foo". */ | |
1992 | DECL_IGNORED_P (type_decl) = 1; | |
8ccc31eb MS |
1993 | |
1994 | /* Remove this when local classes are fixed. */ | |
1995 | SET_IDENTIFIER_TYPE_VALUE (nested, type); | |
1996 | ||
1997 | pushdecl_nonclass_level (type_decl); | |
1998 | } | |
8d08fdba MS |
1999 | } |
2000 | ||
a9aedbc2 MS |
2001 | /* Pop off extraneous binding levels left over due to syntax errors. |
2002 | ||
2003 | We don't pop past namespaces, as they might be valid. */ | |
8926095f MS |
2004 | void |
2005 | pop_everything () | |
2006 | { | |
2007 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2008 | fprintf (stderr, "XXX entering pop_everything ()\n"); | |
2009 | #endif | |
a9aedbc2 | 2010 | while (! toplevel_bindings_p () && ! pseudo_global_level_p ()) |
8926095f MS |
2011 | { |
2012 | if (class_binding_level) | |
2013 | pop_nested_class (1); | |
2014 | else | |
2015 | poplevel (0, 0, 0); | |
2016 | } | |
2017 | #ifdef DEBUG_CP_BINDING_LEVELS | |
2018 | fprintf (stderr, "XXX leaving pop_everything ()\n"); | |
2019 | #endif | |
2020 | } | |
2021 | ||
8d08fdba | 2022 | /* Push a tag name NAME for struct/class/union/enum type TYPE. |
ddd5a7c1 | 2023 | Normally put into into the inner-most non-tag-transparent scope, |
8d08fdba MS |
2024 | but if GLOBALIZE is true, put it in the inner-most non-class scope. |
2025 | The latter is needed for implicit declarations. */ | |
2026 | ||
2027 | void | |
2028 | pushtag (name, type, globalize) | |
2029 | tree name, type; | |
2030 | int globalize; | |
2031 | { | |
2032 | register struct binding_level *b; | |
7177d104 | 2033 | tree context = 0; |
2986ae00 | 2034 | tree c_decl = 0; |
8d08fdba MS |
2035 | |
2036 | b = inner_binding_level; | |
2037 | while (b->tag_transparent | |
2038 | || (globalize && b->parm_flag == 2)) | |
2039 | b = b->level_chain; | |
2040 | ||
a9aedbc2 | 2041 | if (toplevel_bindings_p ()) |
8d08fdba MS |
2042 | b->tags = perm_tree_cons (name, type, b->tags); |
2043 | else | |
2044 | b->tags = saveable_tree_cons (name, type, b->tags); | |
2045 | ||
2046 | if (name) | |
2047 | { | |
7177d104 MS |
2048 | context = type ? TYPE_CONTEXT (type) : NULL_TREE; |
2049 | if (! context && ! globalize) | |
2050 | context = current_scope (); | |
2051 | if (context) | |
2986ae00 | 2052 | c_decl = TREE_CODE (context) == FUNCTION_DECL |
e1cd6e56 | 2053 | ? context : TYPE_MAIN_DECL (context); |
8d08fdba | 2054 | |
8d08fdba | 2055 | /* Do C++ gratuitous typedefing. */ |
db5ae43f | 2056 | if (IDENTIFIER_TYPE_VALUE (name) != type) |
8d08fdba MS |
2057 | { |
2058 | register tree d; | |
2059 | int newdecl = 0; | |
2060 | ||
2061 | if (b->parm_flag != 2 | |
2062 | || TYPE_SIZE (current_class_type) != NULL_TREE) | |
2063 | { | |
2986ae00 | 2064 | d = lookup_nested_type (type, c_decl); |
8d08fdba MS |
2065 | |
2066 | if (d == NULL_TREE) | |
2067 | { | |
2068 | newdecl = 1; | |
8d08fdba | 2069 | d = build_decl (TYPE_DECL, name, type); |
00595019 | 2070 | SET_DECL_ARTIFICIAL (d); |
8d08fdba MS |
2071 | #ifdef DWARF_DEBUGGING_INFO |
2072 | if (write_symbols == DWARF_DEBUG) | |
2073 | { | |
2074 | /* Mark the TYPE_DECL node we created just above as an | |
2075 | gratuitous one. We need to do this so that dwarfout.c | |
2076 | will understand that it is not supposed to output a | |
2077 | TAG_typedef DIE for it. */ | |
2078 | DECL_IGNORED_P (d) = 1; | |
2079 | } | |
2080 | #endif /* DWARF_DEBUGGING_INFO */ | |
2081 | set_identifier_type_value_with_scope (name, type, b); | |
2082 | } | |
2083 | else | |
2084 | d = TYPE_NAME (d); | |
2085 | ||
e1cd6e56 | 2086 | TYPE_NAME (type) = d; |
5566b478 MS |
2087 | DECL_CONTEXT (d) = context; |
2088 | if (! globalize && current_template_parms && IS_AGGR_TYPE (type)) | |
2089 | push_template_decl (d); | |
e1cd6e56 | 2090 | |
8d08fdba | 2091 | /* If it is anonymous, then we are called from pushdecl, |
e1cd6e56 MS |
2092 | and we don't want to infinitely recurse. */ |
2093 | if (! ANON_AGGRNAME_P (name)) | |
8d08fdba MS |
2094 | { |
2095 | if (b->parm_flag == 2) | |
2096 | d = pushdecl_class_level (d); | |
2097 | else | |
2098 | d = pushdecl_with_scope (d, b); | |
2099 | } | |
2100 | } | |
2101 | else | |
2102 | { | |
2103 | /* Make nested declarations go into class-level scope. */ | |
2104 | newdecl = 1; | |
a0a33927 | 2105 | d = build_decl (TYPE_DECL, name, type); |
00595019 | 2106 | SET_DECL_ARTIFICIAL (d); |
8d08fdba MS |
2107 | #ifdef DWARF_DEBUGGING_INFO |
2108 | if (write_symbols == DWARF_DEBUG) | |
2109 | { | |
2110 | /* Mark the TYPE_DECL node we created just above as an | |
2111 | gratuitous one. We need to do this so that dwarfout.c | |
2112 | will understand that it is not supposed to output a | |
2113 | TAG_typedef DIE for it. */ | |
2114 | DECL_IGNORED_P (d) = 1; | |
2115 | } | |
2116 | #endif /* DWARF_DEBUGGING_INFO */ | |
e1cd6e56 | 2117 | |
8ccc31eb | 2118 | TYPE_MAIN_DECL (type) = d; |
5566b478 MS |
2119 | DECL_CONTEXT (d) = context; |
2120 | if (! globalize && current_template_parms && IS_AGGR_TYPE (type)) | |
2121 | push_template_decl (d); | |
e1cd6e56 | 2122 | |
8d08fdba | 2123 | d = pushdecl_class_level (d); |
8d08fdba | 2124 | } |
8ccc31eb | 2125 | if (newdecl) |
8d08fdba | 2126 | { |
8ccc31eb MS |
2127 | if (write_symbols != DWARF_DEBUG) |
2128 | { | |
2129 | if (ANON_AGGRNAME_P (name)) | |
2130 | DECL_IGNORED_P (d) = 1; | |
2131 | } | |
2132 | ||
5566b478 MS |
2133 | TYPE_CONTEXT (type) = DECL_CONTEXT (d); |
2134 | ||
8ccc31eb MS |
2135 | if (context == NULL_TREE) |
2136 | /* Non-nested class. */ | |
2137 | set_nested_typename (d, NULL_TREE, name, type); | |
2138 | else if (context && TREE_CODE (context) == FUNCTION_DECL) | |
2139 | /* Function-nested class. */ | |
2140 | set_nested_typename (d, DECL_ASSEMBLER_NAME (c_decl), | |
2141 | name, type); | |
2142 | else /* if (context && IS_AGGR_TYPE (context)) */ | |
2143 | /* Class-nested class. */ | |
2144 | set_nested_typename (d, DECL_NESTED_TYPENAME (c_decl), | |
2145 | name, type); | |
8d08fdba | 2146 | |
8ccc31eb MS |
2147 | DECL_ASSEMBLER_NAME (d) |
2148 | = get_identifier (build_overload_name (type, 1, 1)); | |
8d08fdba | 2149 | } |
8d08fdba MS |
2150 | } |
2151 | if (b->parm_flag == 2) | |
2152 | { | |
2153 | TREE_NONLOCAL_FLAG (type) = 1; | |
2154 | if (TYPE_SIZE (current_class_type) == NULL_TREE) | |
2155 | CLASSTYPE_TAGS (current_class_type) = b->tags; | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) | |
2160 | /* Use the canonical TYPE_DECL for this node. */ | |
2161 | TYPE_STUB_DECL (type) = TYPE_NAME (type); | |
2162 | else | |
2163 | { | |
2164 | /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE | |
2165 | will be the tagged type we just added to the current | |
2166 | binding level. This fake NULL-named TYPE_DECL node helps | |
2167 | dwarfout.c to know when it needs to output a | |
2168 | representation of a tagged type, and it also gives us a | |
2169 | convenient place to record the "scope start" address for | |
2170 | the tagged type. */ | |
2171 | ||
8d08fdba | 2172 | tree d = build_decl (TYPE_DECL, NULL_TREE, type); |
8d08fdba MS |
2173 | TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b); |
2174 | } | |
2175 | } | |
2176 | ||
2177 | /* Counter used to create anonymous type names. */ | |
2178 | static int anon_cnt = 0; | |
2179 | ||
2180 | /* Return an IDENTIFIER which can be used as a name for | |
2181 | anonymous structs and unions. */ | |
2182 | tree | |
2183 | make_anon_name () | |
2184 | { | |
2185 | char buf[32]; | |
2186 | ||
2187 | sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++); | |
2188 | return get_identifier (buf); | |
2189 | } | |
2190 | ||
2191 | /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames. | |
2192 | This keeps dbxout from getting confused. */ | |
2193 | void | |
2194 | clear_anon_tags () | |
2195 | { | |
2196 | register struct binding_level *b; | |
2197 | register tree tags; | |
2198 | static int last_cnt = 0; | |
2199 | ||
2200 | /* Fast out if no new anon names were declared. */ | |
2201 | if (last_cnt == anon_cnt) | |
2202 | return; | |
2203 | ||
2204 | b = current_binding_level; | |
2205 | while (b->tag_transparent) | |
2206 | b = b->level_chain; | |
2207 | tags = b->tags; | |
2208 | while (tags) | |
2209 | { | |
2210 | /* A NULL purpose means we have already processed all tags | |
2211 | from here to the end of the list. */ | |
2212 | if (TREE_PURPOSE (tags) == NULL_TREE) | |
2213 | break; | |
2214 | if (ANON_AGGRNAME_P (TREE_PURPOSE (tags))) | |
2215 | TREE_PURPOSE (tags) = NULL_TREE; | |
2216 | tags = TREE_CHAIN (tags); | |
2217 | } | |
2218 | last_cnt = anon_cnt; | |
2219 | } | |
2220 | \f | |
2221 | /* Subroutine of duplicate_decls: return truthvalue of whether | |
2222 | or not types of these decls match. | |
2223 | ||
2224 | For C++, we must compare the parameter list so that `int' can match | |
2225 | `int&' in a parameter position, but `int&' is not confused with | |
2226 | `const int&'. */ | |
6060a796 | 2227 | int |
8d08fdba MS |
2228 | decls_match (newdecl, olddecl) |
2229 | tree newdecl, olddecl; | |
2230 | { | |
2231 | int types_match; | |
2232 | ||
a28e3c7f MS |
2233 | if (TREE_CODE (newdecl) == FUNCTION_DECL |
2234 | && TREE_CODE (olddecl) == FUNCTION_DECL) | |
8d08fdba MS |
2235 | { |
2236 | tree f1 = TREE_TYPE (newdecl); | |
2237 | tree f2 = TREE_TYPE (olddecl); | |
2238 | tree p1 = TYPE_ARG_TYPES (f1); | |
2239 | tree p2 = TYPE_ARG_TYPES (f2); | |
2240 | ||
2241 | /* When we parse a static member function definition, | |
2242 | we put together a FUNCTION_DECL which thinks its type | |
2243 | is METHOD_TYPE. Change that to FUNCTION_TYPE, and | |
2244 | proceed. */ | |
2245 | if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl)) | |
700f8a87 | 2246 | revert_static_member_fn (&newdecl, &f1, &p1); |
8d08fdba MS |
2247 | else if (TREE_CODE (f2) == METHOD_TYPE |
2248 | && DECL_STATIC_FUNCTION_P (newdecl)) | |
700f8a87 | 2249 | revert_static_member_fn (&olddecl, &f2, &p2); |
8d08fdba MS |
2250 | |
2251 | /* Here we must take care of the case where new default | |
2252 | parameters are specified. Also, warn if an old | |
2253 | declaration becomes ambiguous because default | |
2254 | parameters may cause the two to be ambiguous. */ | |
2255 | if (TREE_CODE (f1) != TREE_CODE (f2)) | |
2256 | { | |
2257 | if (TREE_CODE (f1) == OFFSET_TYPE) | |
2258 | cp_compiler_error ("`%D' redeclared as member function", newdecl); | |
2259 | else | |
2260 | cp_compiler_error ("`%D' redeclared as non-member function", newdecl); | |
2261 | return 0; | |
2262 | } | |
2263 | ||
39211cd5 | 2264 | if (comptypes (TREE_TYPE (f1), TREE_TYPE (f2), 1)) |
8926095f | 2265 | { |
a28e3c7f | 2266 | if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c |
8926095f | 2267 | && p2 == NULL_TREE) |
a28e3c7f MS |
2268 | { |
2269 | types_match = self_promoting_args_p (p1); | |
2270 | if (p1 == void_list_node) | |
2271 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
2272 | } | |
2273 | else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c | |
2274 | && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE) | |
2275 | { | |
2276 | types_match = self_promoting_args_p (p2); | |
2277 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl); | |
2278 | } | |
8926095f | 2279 | else |
a4443a08 | 2280 | types_match = compparms (p1, p2, 3); |
8926095f | 2281 | } |
8d08fdba MS |
2282 | else |
2283 | types_match = 0; | |
2284 | } | |
51c184be MS |
2285 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL |
2286 | && TREE_CODE (olddecl) == TEMPLATE_DECL) | |
2287 | { | |
2288 | tree newargs = DECL_TEMPLATE_PARMS (newdecl); | |
2289 | tree oldargs = DECL_TEMPLATE_PARMS (olddecl); | |
2290 | int i, len = TREE_VEC_LENGTH (newargs); | |
2291 | ||
2292 | if (TREE_VEC_LENGTH (oldargs) != len) | |
2293 | return 0; | |
2294 | ||
2295 | for (i = 0; i < len; i++) | |
2296 | { | |
00595019 MS |
2297 | tree newarg = TREE_VALUE (TREE_VEC_ELT (newargs, i)); |
2298 | tree oldarg = TREE_VALUE (TREE_VEC_ELT (oldargs, i)); | |
51c184be MS |
2299 | if (TREE_CODE (newarg) != TREE_CODE (oldarg)) |
2300 | return 0; | |
00595019 | 2301 | else if (TREE_CODE (newarg) == TYPE_DECL) |
51c184be MS |
2302 | /* continue */; |
2303 | else if (! comptypes (TREE_TYPE (newarg), TREE_TYPE (oldarg), 1)) | |
2304 | return 0; | |
2305 | } | |
2306 | ||
5566b478 | 2307 | if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) |
51c184be MS |
2308 | types_match = 1; |
2309 | else | |
2310 | types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl), | |
2311 | DECL_TEMPLATE_RESULT (newdecl)); | |
2312 | } | |
8d08fdba MS |
2313 | else |
2314 | { | |
2315 | if (TREE_TYPE (newdecl) == error_mark_node) | |
2316 | types_match = TREE_TYPE (olddecl) == error_mark_node; | |
2317 | else if (TREE_TYPE (olddecl) == NULL_TREE) | |
2318 | types_match = TREE_TYPE (newdecl) == NULL_TREE; | |
a0a33927 MS |
2319 | else if (TREE_TYPE (newdecl) == NULL_TREE) |
2320 | types_match = 0; | |
72b7eeff MS |
2321 | /* Qualifiers must match, and they may be present on either, the type |
2322 | or the decl. */ | |
2323 | else if ((TREE_READONLY (newdecl) | |
2324 | || TYPE_READONLY (TREE_TYPE (newdecl))) | |
2325 | == (TREE_READONLY (olddecl) | |
2326 | || TYPE_READONLY (TREE_TYPE (olddecl))) | |
2327 | && (TREE_THIS_VOLATILE (newdecl) | |
2328 | || TYPE_VOLATILE (TREE_TYPE (newdecl))) | |
2329 | == (TREE_THIS_VOLATILE (olddecl) | |
2330 | || TYPE_VOLATILE (TREE_TYPE (olddecl)))) | |
2331 | types_match = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl)), | |
2332 | TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)), 1); | |
8d08fdba | 2333 | else |
72b7eeff | 2334 | types_match = 0; |
8d08fdba MS |
2335 | } |
2336 | ||
2337 | return types_match; | |
2338 | } | |
2339 | ||
2340 | /* If NEWDECL is `static' and an `extern' was seen previously, | |
2341 | warn about it. (OLDDECL may be NULL_TREE; NAME contains | |
2342 | information about previous usage as an `extern'.) | |
2343 | ||
2344 | Note that this does not apply to the C++ case of declaring | |
2345 | a variable `extern const' and then later `const'. | |
2346 | ||
2347 | Don't complain if -traditional, since traditional compilers | |
2348 | don't complain. | |
2349 | ||
2350 | Don't complain about built-in functions, since they are beyond | |
2351 | the user's control. */ | |
2352 | ||
2353 | static void | |
2354 | warn_extern_redeclared_static (newdecl, olddecl) | |
2355 | tree newdecl, olddecl; | |
2356 | { | |
2357 | tree name; | |
2358 | ||
2359 | static char *explicit_extern_static_warning | |
2360 | = "`%D' was declared `extern' and later `static'"; | |
2361 | static char *implicit_extern_static_warning | |
2362 | = "`%D' was declared implicitly `extern' and later `static'"; | |
2363 | ||
2364 | if (flag_traditional | |
faae18ab | 2365 | || TREE_CODE (newdecl) == TYPE_DECL) |
8d08fdba MS |
2366 | return; |
2367 | ||
2368 | name = DECL_ASSEMBLER_NAME (newdecl); | |
faae18ab | 2369 | if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl)) |
8d08fdba MS |
2370 | { |
2371 | /* It's okay to redeclare an ANSI built-in function as static, | |
2372 | or to declare a non-ANSI built-in function as anything. */ | |
2373 | if (! (TREE_CODE (newdecl) == FUNCTION_DECL | |
2374 | && olddecl != NULL_TREE | |
2375 | && TREE_CODE (olddecl) == FUNCTION_DECL | |
2376 | && (DECL_BUILT_IN (olddecl) | |
2377 | || DECL_BUILT_IN_NONANSI (olddecl)))) | |
2378 | { | |
a9aedbc2 | 2379 | cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name) |
8d08fdba MS |
2380 | ? implicit_extern_static_warning |
2381 | : explicit_extern_static_warning, newdecl); | |
2382 | if (olddecl != NULL_TREE) | |
a9aedbc2 | 2383 | cp_pedwarn_at ("previous declaration of `%D'", olddecl); |
8d08fdba MS |
2384 | } |
2385 | } | |
2386 | } | |
2387 | ||
2388 | /* Handle when a new declaration NEWDECL has the same name as an old | |
2389 | one OLDDECL in the same binding contour. Prints an error message | |
2390 | if appropriate. | |
2391 | ||
2392 | If safely possible, alter OLDDECL to look like NEWDECL, and return 1. | |
2393 | Otherwise, return 0. */ | |
2394 | ||
51c184be | 2395 | int |
8d08fdba MS |
2396 | duplicate_decls (newdecl, olddecl) |
2397 | register tree newdecl, olddecl; | |
2398 | { | |
2399 | extern struct obstack permanent_obstack; | |
2400 | unsigned olddecl_uid = DECL_UID (olddecl); | |
2401 | int olddecl_friend = 0, types_match = 0; | |
2402 | int new_defines_function; | |
5566b478 MS |
2403 | |
2404 | if (newdecl == olddecl) | |
2405 | return 1; | |
8d08fdba | 2406 | |
f6abb50a BK |
2407 | if (TREE_CODE_CLASS (TREE_CODE (olddecl)) == 'd') |
2408 | DECL_MACHINE_ATTRIBUTES (newdecl) = DECL_MACHINE_ATTRIBUTES (olddecl); | |
2409 | ||
8926095f | 2410 | types_match = decls_match (newdecl, olddecl); |
8d08fdba MS |
2411 | |
2412 | if (TREE_CODE (olddecl) != TREE_LIST) | |
2413 | olddecl_friend = DECL_LANG_SPECIFIC (olddecl) && DECL_FRIEND_P (olddecl); | |
2414 | ||
2415 | /* If either the type of the new decl or the type of the old decl is an | |
2416 | error_mark_node, then that implies that we have already issued an | |
2417 | error (earlier) for some bogus type specification, and in that case, | |
2418 | it is rather pointless to harass the user with yet more error message | |
2419 | about the same declaration, so well just pretent the types match here. */ | |
2420 | if ((TREE_TYPE (newdecl) | |
2421 | && TREE_CODE (TREE_TYPE (newdecl)) == ERROR_MARK) | |
2422 | || (TREE_TYPE (olddecl) | |
2423 | && TREE_CODE (TREE_TYPE (olddecl)) == ERROR_MARK)) | |
2424 | types_match = 1; | |
2425 | ||
8d08fdba MS |
2426 | if (flag_traditional && TREE_CODE (newdecl) == FUNCTION_DECL |
2427 | && IDENTIFIER_IMPLICIT_DECL (DECL_ASSEMBLER_NAME (newdecl)) == olddecl) | |
2428 | /* If -traditional, avoid error for redeclaring fcn | |
2429 | after implicit decl. */ | |
2430 | ; | |
2431 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
00595019 | 2432 | && DECL_ARTIFICIAL (olddecl) |
a4443a08 | 2433 | && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl))) |
8d08fdba MS |
2434 | { |
2435 | /* If you declare a built-in or predefined function name as static, | |
a4443a08 MS |
2436 | the old definition is overridden, but optionally warn this was a |
2437 | bad choice of name. Ditto for overloads. */ | |
db5ae43f | 2438 | if (! DECL_PUBLIC (newdecl) |
a4443a08 MS |
2439 | || (TREE_CODE (newdecl) == FUNCTION_DECL |
2440 | && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))) | |
2441 | { | |
2442 | if (warn_shadow) | |
2443 | cp_warning ("shadowing %s function `%#D'", | |
2444 | DECL_BUILT_IN (olddecl) ? "built-in" : "library", | |
2445 | olddecl); | |
2446 | /* Discard the old built-in function. */ | |
2447 | return 0; | |
2448 | } | |
2449 | else if (! types_match) | |
8d08fdba | 2450 | { |
a4443a08 MS |
2451 | if (TREE_CODE (newdecl) != FUNCTION_DECL) |
2452 | { | |
2453 | /* If the built-in is not ansi, then programs can override | |
2454 | it even globally without an error. */ | |
2455 | if (! DECL_BUILT_IN (olddecl)) | |
2456 | cp_warning ("library function `%#D' redeclared as non-function `%#D'", | |
2457 | olddecl, newdecl); | |
2458 | else | |
2459 | { | |
2460 | cp_error ("declaration of `%#D'", newdecl); | |
2461 | cp_error ("conflicts with built-in declaration `%#D'", | |
2462 | olddecl); | |
2463 | } | |
2464 | return 0; | |
2465 | } | |
2466 | ||
8d08fdba MS |
2467 | cp_warning ("declaration of `%#D'", newdecl); |
2468 | cp_warning ("conflicts with built-in declaration `%#D'", | |
2469 | olddecl); | |
8d08fdba | 2470 | } |
39211cd5 MS |
2471 | } |
2472 | else if (TREE_CODE (olddecl) != TREE_CODE (newdecl)) | |
2473 | { | |
2474 | if ((TREE_CODE (newdecl) == FUNCTION_DECL | |
5566b478 | 2475 | && DECL_FUNCTION_TEMPLATE_P (olddecl)) |
39211cd5 | 2476 | || (TREE_CODE (olddecl) == FUNCTION_DECL |
5566b478 | 2477 | && DECL_FUNCTION_TEMPLATE_P (newdecl))) |
39211cd5 MS |
2478 | return 0; |
2479 | ||
2480 | cp_error ("`%#D' redeclared as different kind of symbol", newdecl); | |
2481 | if (TREE_CODE (olddecl) == TREE_LIST) | |
2482 | olddecl = TREE_VALUE (olddecl); | |
2483 | cp_error_at ("previous declaration of `%#D'", olddecl); | |
2484 | ||
2485 | /* New decl is completely inconsistent with the old one => | |
2486 | tell caller to replace the old one. */ | |
2487 | ||
2488 | return 0; | |
8d08fdba | 2489 | } |
8d08fdba MS |
2490 | else if (!types_match) |
2491 | { | |
8926095f | 2492 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
f0e01782 MS |
2493 | { |
2494 | /* The name of a class template may not be declared to refer to | |
2495 | any other template, class, function, object, namespace, value, | |
2496 | or type in the same scope. */ | |
5566b478 MS |
2497 | if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL |
2498 | || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL) | |
f0e01782 MS |
2499 | { |
2500 | cp_error ("declaration of template `%#D'", newdecl); | |
2501 | cp_error_at ("conflicts with previous declaration `%#D'", | |
2502 | olddecl); | |
2503 | } | |
2504 | return 0; | |
2505 | } | |
8926095f MS |
2506 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
2507 | { | |
2508 | if (DECL_LANGUAGE (newdecl) == lang_c | |
2509 | && DECL_LANGUAGE (olddecl) == lang_c) | |
2510 | { | |
2511 | cp_error ("declaration of C function `%#D' conflicts with", | |
2512 | newdecl); | |
2513 | cp_error_at ("previous declaration `%#D' here", olddecl); | |
2514 | } | |
00595019 | 2515 | else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)), |
28cbf42c | 2516 | TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3)) |
700f8a87 MS |
2517 | { |
2518 | cp_error ("new declaration `%#D'", newdecl); | |
2519 | cp_error_at ("ambiguates old declaration `%#D'", olddecl); | |
2520 | } | |
2521 | else | |
2522 | return 0; | |
8926095f | 2523 | } |
8d08fdba MS |
2524 | |
2525 | /* Already complained about this, so don't do so again. */ | |
a4443a08 | 2526 | else if (current_class_type == NULL_TREE |
8d08fdba MS |
2527 | || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type) |
2528 | { | |
f376e137 | 2529 | cp_error ("conflicting types for `%#D'", newdecl); |
8926095f | 2530 | cp_error_at ("previous declaration as `%#D'", olddecl); |
8d08fdba MS |
2531 | } |
2532 | } | |
2533 | else | |
2534 | { | |
2535 | char *errmsg = redeclaration_error_message (newdecl, olddecl); | |
2536 | if (errmsg) | |
2537 | { | |
51c184be | 2538 | cp_error (errmsg, newdecl); |
8d08fdba MS |
2539 | if (DECL_NAME (olddecl) != NULL_TREE) |
2540 | cp_error_at ((DECL_INITIAL (olddecl) | |
2541 | && current_binding_level == global_binding_level) | |
2542 | ? "`%#D' previously defined here" | |
2543 | : "`%#D' previously declared here", olddecl); | |
2544 | } | |
2545 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
2546 | && DECL_INITIAL (olddecl) != NULL_TREE | |
2547 | && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE | |
2548 | && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE) | |
2549 | { | |
2550 | /* Prototype decl follows defn w/o prototype. */ | |
2551 | cp_warning_at ("prototype for `%#D'", newdecl); | |
2552 | cp_warning_at ("follows non-prototype definition here", olddecl); | |
2553 | } | |
2554 | else if (TREE_CODE (olddecl) == FUNCTION_DECL | |
2555 | && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)) | |
8926095f MS |
2556 | { |
2557 | /* extern "C" int foo (); | |
2558 | int foo () { bar (); } | |
2559 | is OK. */ | |
2560 | if (current_lang_stack == current_lang_base) | |
a28e3c7f | 2561 | DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl); |
8926095f MS |
2562 | else |
2563 | { | |
2564 | cp_error_at ("previous declaration of `%#D' with %L linkage", | |
2565 | olddecl, DECL_LANGUAGE (olddecl)); | |
2566 | cp_error ("conflicts with new declaration with %L linkage", | |
2567 | DECL_LANGUAGE (newdecl)); | |
2568 | } | |
2569 | } | |
e1cd6e56 | 2570 | |
5566b478 MS |
2571 | if (TREE_CODE (olddecl) == FUNCTION_DECL |
2572 | && ! DECL_USE_TEMPLATE (olddecl)) | |
e1cd6e56 MS |
2573 | { |
2574 | tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl)); | |
2575 | tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)); | |
2576 | int i = 1; | |
2577 | ||
2578 | if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE) | |
2579 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2); | |
2580 | ||
2581 | for (; t1 && t1 != void_list_node; | |
2582 | t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++) | |
2583 | if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2)) | |
2584 | { | |
2507f3b5 RK |
2585 | if (1 == simple_cst_equal (TREE_PURPOSE (t1), |
2586 | TREE_PURPOSE (t2))) | |
e1cd6e56 MS |
2587 | { |
2588 | if (pedantic) | |
2589 | { | |
2590 | cp_pedwarn ("default argument given for parameter %d of `%#D'", | |
2591 | i, newdecl); | |
2592 | cp_pedwarn_at ("after previous specification in `%#D'", | |
2593 | olddecl); | |
2594 | } | |
2595 | } | |
2596 | else | |
2597 | { | |
2598 | cp_error ("default argument given for parameter %d of `%#D'", | |
2599 | i, newdecl); | |
2600 | cp_error_at ("conflicts with previous specification in `%#D'", | |
2601 | olddecl); | |
2602 | } | |
2603 | } | |
a5894242 | 2604 | |
dff6b454 RK |
2605 | if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)) |
2606 | { | |
f9bcb547 JM |
2607 | #if 0 /* I think this will be correct, but it's really annoying. We should |
2608 | fix the compiler to find vtables by indirection so it isn't | |
2609 | necessary. (jason 8/25/95) */ | |
dff6b454 RK |
2610 | if (DECL_VINDEX (olddecl) && ! DECL_ABSTRACT_VIRTUAL_P (olddecl)) |
2611 | { | |
2612 | cp_pedwarn ("virtual function `%#D' redeclared inline", | |
2613 | newdecl); | |
2614 | cp_pedwarn_at ("previous non-inline declaration here", | |
2615 | olddecl); | |
2616 | } | |
f9bcb547 JM |
2617 | else |
2618 | #endif | |
2619 | if (TREE_ADDRESSABLE (olddecl)) | |
dff6b454 RK |
2620 | { |
2621 | cp_pedwarn ("`%#D' was used before it was declared inline", | |
2622 | newdecl); | |
2623 | cp_pedwarn_at ("previous non-inline declaration here", | |
2624 | olddecl); | |
2625 | } | |
2626 | } | |
e1cd6e56 | 2627 | } |
8ccc31eb MS |
2628 | /* These bits are logically part of the type for non-functions. */ |
2629 | else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl) | |
2630 | || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl)) | |
2631 | { | |
2632 | cp_pedwarn ("type qualifiers for `%#D'", newdecl); | |
2633 | cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl); | |
2634 | } | |
8d08fdba MS |
2635 | } |
2636 | ||
2637 | /* If new decl is `static' and an `extern' was seen previously, | |
2638 | warn about it. */ | |
2639 | warn_extern_redeclared_static (newdecl, olddecl); | |
2640 | ||
2641 | /* We have committed to returning 1 at this point. */ | |
2642 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
2643 | { | |
2644 | /* Now that functions must hold information normally held | |
2645 | by field decls, there is extra work to do so that | |
2646 | declaration information does not get destroyed during | |
2647 | definition. */ | |
2648 | if (DECL_VINDEX (olddecl)) | |
2649 | DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl); | |
2650 | if (DECL_CONTEXT (olddecl)) | |
2651 | DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl); | |
2652 | if (DECL_CLASS_CONTEXT (olddecl)) | |
2653 | DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl); | |
2654 | if (DECL_CHAIN (newdecl) == NULL_TREE) | |
2655 | DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl); | |
2656 | if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0) | |
2657 | DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl); | |
e1cd6e56 MS |
2658 | DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl); |
2659 | DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl); | |
7215f9a0 | 2660 | DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl); |
8d08fdba MS |
2661 | } |
2662 | ||
2663 | /* Deal with C++: must preserve virtual function table size. */ | |
2664 | if (TREE_CODE (olddecl) == TYPE_DECL) | |
2665 | { | |
2666 | register tree newtype = TREE_TYPE (newdecl); | |
2667 | register tree oldtype = TREE_TYPE (olddecl); | |
2668 | ||
8ccc31eb MS |
2669 | DECL_NESTED_TYPENAME (newdecl) = DECL_NESTED_TYPENAME (olddecl); |
2670 | ||
8d08fdba MS |
2671 | if (newtype != error_mark_node && oldtype != error_mark_node |
2672 | && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype)) | |
2673 | { | |
2674 | CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype); | |
2675 | CLASSTYPE_FRIEND_CLASSES (newtype) | |
2676 | = CLASSTYPE_FRIEND_CLASSES (oldtype); | |
2677 | } | |
8d08fdba MS |
2678 | } |
2679 | ||
2680 | /* Special handling ensues if new decl is a function definition. */ | |
2681 | new_defines_function = (TREE_CODE (newdecl) == FUNCTION_DECL | |
2682 | && DECL_INITIAL (newdecl) != NULL_TREE); | |
2683 | ||
2684 | /* Optionally warn about more than one declaration for the same name, | |
2685 | but don't warn about a function declaration followed by a definition. */ | |
2686 | if (warn_redundant_decls | |
700f8a87 | 2687 | && ! DECL_ARTIFICIAL (olddecl) |
8d08fdba MS |
2688 | && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE) |
2689 | /* Don't warn about extern decl followed by (tentative) definition. */ | |
2690 | && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))) | |
2691 | { | |
2692 | cp_warning ("redundant redeclaration of `%D' in same scope", newdecl); | |
44a8d0b3 | 2693 | cp_warning_at ("previous declaration of `%D'", olddecl); |
8d08fdba MS |
2694 | } |
2695 | ||
2696 | /* Copy all the DECL_... slots specified in the new decl | |
2697 | except for any that we copy here from the old type. */ | |
2698 | ||
5566b478 MS |
2699 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
2700 | { | |
2701 | TREE_TYPE (olddecl) = TREE_TYPE (newdecl); | |
2702 | DECL_TEMPLATE_RESULT (olddecl) = DECL_TEMPLATE_RESULT (newdecl); | |
2703 | DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl); | |
2704 | return 1; | |
2705 | } | |
2706 | ||
8d08fdba MS |
2707 | if (types_match) |
2708 | { | |
2709 | /* Automatically handles default parameters. */ | |
2710 | tree oldtype = TREE_TYPE (olddecl); | |
e1cd6e56 | 2711 | tree newtype; |
8d08fdba | 2712 | |
e1cd6e56 MS |
2713 | /* Make sure we put the new type in the same obstack as the old one. */ |
2714 | if (oldtype) | |
39211cd5 MS |
2715 | push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype)); |
2716 | else | |
2717 | { | |
2718 | push_obstacks_nochange (); | |
2719 | end_temporary_allocation (); | |
2720 | } | |
2721 | ||
e1cd6e56 MS |
2722 | /* Merge the data types specified in the two decls. */ |
2723 | newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl)); | |
2724 | ||
8d08fdba MS |
2725 | if (TREE_CODE (newdecl) == VAR_DECL) |
2726 | DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl); | |
2727 | /* Do this after calling `common_type' so that default | |
2728 | parameters don't confuse us. */ | |
2729 | else if (TREE_CODE (newdecl) == FUNCTION_DECL | |
2730 | && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)) | |
2731 | != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)))) | |
2732 | { | |
f30432d7 | 2733 | TREE_TYPE (newdecl) = build_exception_variant (newtype, |
8d08fdba | 2734 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))); |
f30432d7 | 2735 | TREE_TYPE (olddecl) = build_exception_variant (newtype, |
8d08fdba MS |
2736 | TYPE_RAISES_EXCEPTIONS (oldtype)); |
2737 | ||
5566b478 | 2738 | if (! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl))) |
8d08fdba | 2739 | { |
6060a796 | 2740 | cp_error ("declaration of `%D' throws different exceptions...", |
a28e3c7f | 2741 | newdecl); |
8d08fdba MS |
2742 | cp_error_at ("...from previous declaration here", olddecl); |
2743 | } | |
2744 | } | |
2745 | TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype; | |
2746 | ||
2747 | /* Lay the type out, unless already done. */ | |
b7484fbe | 2748 | if (oldtype != TREE_TYPE (newdecl) |
5566b478 MS |
2749 | && TREE_TYPE (newdecl) != error_mark_node |
2750 | && !(current_template_parms && uses_template_parms (newdecl))) | |
b7484fbe MS |
2751 | layout_type (TREE_TYPE (newdecl)); |
2752 | ||
5566b478 MS |
2753 | if ((TREE_CODE (newdecl) == VAR_DECL |
2754 | || TREE_CODE (newdecl) == PARM_DECL | |
2755 | || TREE_CODE (newdecl) == RESULT_DECL | |
2756 | || TREE_CODE (newdecl) == FIELD_DECL | |
2757 | || TREE_CODE (newdecl) == TYPE_DECL) | |
2758 | && !(current_template_parms && uses_template_parms (newdecl))) | |
b7484fbe | 2759 | layout_decl (newdecl, 0); |
8d08fdba MS |
2760 | |
2761 | /* Merge the type qualifiers. */ | |
2762 | if (TREE_READONLY (newdecl)) | |
2763 | TREE_READONLY (olddecl) = 1; | |
2764 | if (TREE_THIS_VOLATILE (newdecl)) | |
2765 | TREE_THIS_VOLATILE (olddecl) = 1; | |
2766 | ||
2767 | /* Merge the initialization information. */ | |
8926095f MS |
2768 | if (DECL_INITIAL (newdecl) == NULL_TREE |
2769 | && DECL_INITIAL (olddecl) != NULL_TREE) | |
2770 | { | |
2771 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
2772 | DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl); | |
2773 | DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl); | |
2774 | } | |
39211cd5 MS |
2775 | |
2776 | /* Merge the section attribute. | |
2777 | We want to issue an error if the sections conflict but that must be | |
2778 | done later in decl_attributes since we are called before attributes | |
2779 | are assigned. */ | |
2780 | if (DECL_SECTION_NAME (newdecl) == NULL_TREE) | |
2781 | DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl); | |
2782 | ||
8d08fdba MS |
2783 | /* Keep the old rtl since we can safely use it, unless it's the |
2784 | call to abort() used for abstract virtuals. */ | |
2785 | if ((DECL_LANG_SPECIFIC (olddecl) | |
2786 | && !DECL_ABSTRACT_VIRTUAL_P (olddecl)) | |
2787 | || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl)) | |
2788 | DECL_RTL (newdecl) = DECL_RTL (olddecl); | |
39211cd5 MS |
2789 | |
2790 | pop_obstacks (); | |
8d08fdba MS |
2791 | } |
2792 | /* If cannot merge, then use the new type and qualifiers, | |
2793 | and don't preserve the old rtl. */ | |
2794 | else | |
2795 | { | |
2796 | /* Clean out any memory we had of the old declaration. */ | |
2797 | tree oldstatic = value_member (olddecl, static_aggregates); | |
2798 | if (oldstatic) | |
2799 | TREE_VALUE (oldstatic) = error_mark_node; | |
2800 | ||
2801 | TREE_TYPE (olddecl) = TREE_TYPE (newdecl); | |
2802 | TREE_READONLY (olddecl) = TREE_READONLY (newdecl); | |
2803 | TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl); | |
2804 | TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl); | |
2805 | } | |
2806 | ||
2807 | /* Merge the storage class information. */ | |
a9aedbc2 MS |
2808 | DECL_WEAK (newdecl) |= DECL_WEAK (olddecl); |
2809 | TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl); | |
2810 | TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl); | |
2811 | if (! DECL_EXTERNAL (olddecl)) | |
2812 | DECL_EXTERNAL (newdecl) = 0; | |
8d08fdba | 2813 | |
a9aedbc2 | 2814 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
5566b478 MS |
2815 | DECL_C_STATIC (newdecl) |= DECL_C_STATIC (olddecl); |
2816 | ||
2817 | if (DECL_LANG_SPECIFIC (newdecl)) | |
8d08fdba | 2818 | { |
a9aedbc2 MS |
2819 | DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl); |
2820 | DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl); | |
8d08fdba MS |
2821 | } |
2822 | ||
8d08fdba MS |
2823 | if (TREE_CODE (newdecl) == FUNCTION_DECL) |
2824 | { | |
faae18ab MS |
2825 | DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl); |
2826 | ||
2827 | /* If either decl says `inline', this fn is inline, unless its | |
2828 | definition was passed already. */ | |
2829 | if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE) | |
2830 | DECL_INLINE (olddecl) = 1; | |
2831 | DECL_INLINE (newdecl) = DECL_INLINE (olddecl); | |
2832 | ||
700f8a87 MS |
2833 | if (! types_match) |
2834 | { | |
2835 | DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl); | |
2836 | DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl); | |
5566b478 MS |
2837 | DECL_RTL (olddecl) = DECL_RTL (newdecl); |
2838 | } | |
2839 | if (! types_match || new_defines_function) | |
2840 | { | |
2841 | /* These need to be copied so that the names are available. */ | |
700f8a87 MS |
2842 | DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl); |
2843 | DECL_RESULT (olddecl) = DECL_RESULT (newdecl); | |
700f8a87 | 2844 | } |
8d08fdba MS |
2845 | if (new_defines_function) |
2846 | /* If defining a function declared with other language | |
2847 | linkage, use the previously declared language linkage. */ | |
2848 | DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl); | |
2849 | else | |
2850 | { | |
2851 | /* If redeclaring a builtin function, and not a definition, | |
2852 | it stays built in. */ | |
2853 | if (DECL_BUILT_IN (olddecl)) | |
2854 | { | |
2855 | DECL_BUILT_IN (newdecl) = 1; | |
39211cd5 | 2856 | DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl); |
8d08fdba MS |
2857 | /* If we're keeping the built-in definition, keep the rtl, |
2858 | regardless of declaration matches. */ | |
2859 | DECL_RTL (newdecl) = DECL_RTL (olddecl); | |
2860 | } | |
2861 | else | |
2862 | DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl); | |
2863 | ||
2864 | DECL_RESULT (newdecl) = DECL_RESULT (olddecl); | |
8926095f | 2865 | if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl))) |
8d08fdba MS |
2866 | /* Previously saved insns go together with |
2867 | the function's previous definition. */ | |
2868 | DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl); | |
2869 | /* Don't clear out the arguments if we're redefining a function. */ | |
2870 | if (DECL_ARGUMENTS (olddecl)) | |
2871 | DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl); | |
2872 | } | |
6060a796 MS |
2873 | if (DECL_LANG_SPECIFIC (olddecl)) |
2874 | DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl); | |
8d08fdba MS |
2875 | } |
2876 | ||
a9aedbc2 MS |
2877 | if (TREE_CODE (newdecl) == NAMESPACE_DECL) |
2878 | { | |
2879 | NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl); | |
2880 | } | |
2881 | ||
8926095f MS |
2882 | if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
2883 | { | |
8926095f MS |
2884 | DECL_TEMPLATE_MEMBERS (newdecl) = DECL_TEMPLATE_MEMBERS (olddecl); |
2885 | DECL_TEMPLATE_INSTANTIATIONS (newdecl) | |
2886 | = DECL_TEMPLATE_INSTANTIATIONS (olddecl); | |
f376e137 MS |
2887 | if (DECL_CHAIN (newdecl) == NULL_TREE) |
2888 | DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl); | |
8926095f | 2889 | } |
5566b478 | 2890 | |
8d08fdba MS |
2891 | /* Now preserve various other info from the definition. */ |
2892 | TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl); | |
2893 | TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl); | |
2894 | DECL_COMMON (newdecl) = DECL_COMMON (olddecl); | |
f376e137 | 2895 | DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl); |
8d08fdba MS |
2896 | |
2897 | /* Don't really know how much of the language-specific | |
2898 | values we should copy from old to new. */ | |
2899 | if (DECL_LANG_SPECIFIC (olddecl)) | |
2900 | { | |
2901 | DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl); | |
2902 | DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl); | |
db5ae43f | 2903 | DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl); |
5566b478 MS |
2904 | if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE) |
2905 | { | |
2906 | DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl); | |
2907 | DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl); | |
2908 | } | |
8d08fdba MS |
2909 | } |
2910 | ||
2911 | if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
2912 | { | |
2913 | int function_size; | |
2914 | struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl); | |
2915 | struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl); | |
2916 | ||
2917 | function_size = sizeof (struct tree_decl); | |
2918 | ||
2919 | bcopy ((char *) newdecl + sizeof (struct tree_common), | |
2920 | (char *) olddecl + sizeof (struct tree_common), | |
2921 | function_size - sizeof (struct tree_common)); | |
2922 | ||
2923 | /* Can we safely free the storage used by newdecl? */ | |
2924 | ||
2925 | #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \ | |
2926 | & ~ obstack_alignment_mask (&permanent_obstack)) | |
2927 | ||
2928 | if ((char *)newdecl + ROUND (function_size) | |
2929 | + ROUND (sizeof (struct lang_decl)) | |
2930 | == obstack_next_free (&permanent_obstack)) | |
2931 | { | |
2932 | DECL_MAIN_VARIANT (newdecl) = olddecl; | |
2933 | DECL_LANG_SPECIFIC (olddecl) = ol; | |
2934 | bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl)); | |
2935 | ||
2936 | obstack_free (&permanent_obstack, newdecl); | |
2937 | } | |
2938 | else if (LANG_DECL_PERMANENT (ol)) | |
2939 | { | |
2940 | if (DECL_MAIN_VARIANT (olddecl) == olddecl) | |
2941 | { | |
2942 | /* Save these lang_decls that would otherwise be lost. */ | |
2943 | extern tree free_lang_decl_chain; | |
2944 | tree free_lang_decl = (tree) ol; | |
2945 | TREE_CHAIN (free_lang_decl) = free_lang_decl_chain; | |
2946 | free_lang_decl_chain = free_lang_decl; | |
2947 | } | |
2948 | else | |
2949 | { | |
2950 | /* Storage leak. */ | |
2951 | } | |
2952 | } | |
2953 | } | |
2954 | else | |
2955 | { | |
2956 | bcopy ((char *) newdecl + sizeof (struct tree_common), | |
2957 | (char *) olddecl + sizeof (struct tree_common), | |
2958 | sizeof (struct tree_decl) - sizeof (struct tree_common) | |
2959 | + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *)); | |
2960 | } | |
2961 | ||
2962 | DECL_UID (olddecl) = olddecl_uid; | |
2963 | if (olddecl_friend) | |
2964 | DECL_FRIEND_P (olddecl) = 1; | |
2965 | ||
2966 | return 1; | |
2967 | } | |
2968 | ||
2969 | /* Record a decl-node X as belonging to the current lexical scope. | |
2970 | Check for errors (such as an incompatible declaration for the same | |
2971 | name already seen in the same scope). | |
2972 | ||
2973 | Returns either X or an old decl for the same name. | |
2974 | If an old decl is returned, it may have been smashed | |
2975 | to agree with what X says. */ | |
2976 | ||
2977 | tree | |
2978 | pushdecl (x) | |
2979 | tree x; | |
2980 | { | |
2981 | register tree t; | |
8d08fdba | 2982 | register tree name = DECL_ASSEMBLER_NAME (x); |
8d08fdba MS |
2983 | register struct binding_level *b = current_binding_level; |
2984 | ||
8d08fdba | 2985 | if (x != current_function_decl |
700f8a87 MS |
2986 | /* Don't change DECL_CONTEXT of virtual methods. */ |
2987 | && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x)) | |
8d08fdba MS |
2988 | && ! DECL_CONTEXT (x)) |
2989 | DECL_CONTEXT (x) = current_function_decl; | |
2990 | /* A local declaration for a function doesn't constitute nesting. */ | |
2991 | if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0) | |
2992 | DECL_CONTEXT (x) = 0; | |
2993 | ||
8d08fdba MS |
2994 | /* Type are looked up using the DECL_NAME, as that is what the rest of the |
2995 | compiler wants to use. */ | |
a9aedbc2 MS |
2996 | if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL |
2997 | || TREE_CODE (x) == NAMESPACE_DECL) | |
8d08fdba | 2998 | name = DECL_NAME (x); |
8d08fdba MS |
2999 | |
3000 | if (name) | |
3001 | { | |
5566b478 MS |
3002 | #if 0 |
3003 | /* Not needed...see below. */ | |
8d08fdba MS |
3004 | char *file; |
3005 | int line; | |
5566b478 | 3006 | #endif |
8d08fdba | 3007 | |
700f8a87 | 3008 | t = lookup_name_current_level (name); |
8d08fdba MS |
3009 | if (t == error_mark_node) |
3010 | { | |
3011 | /* error_mark_node is 0 for a while during initialization! */ | |
3012 | t = NULL_TREE; | |
3013 | cp_error_at ("`%#D' used prior to declaration", x); | |
3014 | } | |
3015 | ||
51c184be | 3016 | else if (t != NULL_TREE) |
8d08fdba | 3017 | { |
5566b478 MS |
3018 | #if 0 |
3019 | /* This is turned off until I have time to do it right (bpk). */ | |
3020 | /* With the code below that uses it... */ | |
8d6e462b PB |
3021 | file = DECL_SOURCE_FILE (t); |
3022 | line = DECL_SOURCE_LINE (t); | |
5566b478 | 3023 | #endif |
2ee887f2 | 3024 | if (TREE_CODE (t) == PARM_DECL) |
8d08fdba MS |
3025 | { |
3026 | if (DECL_CONTEXT (t) == NULL_TREE) | |
3027 | fatal ("parse errors have confused me too much"); | |
be99da77 MS |
3028 | |
3029 | /* Check for duplicate params. */ | |
3030 | if (duplicate_decls (x, t)) | |
3031 | return t; | |
8d08fdba | 3032 | } |
8d6e462b | 3033 | else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c) |
5566b478 MS |
3034 | || DECL_FUNCTION_TEMPLATE_P (x)) |
3035 | && is_overloaded_fn (t)) | |
8926095f | 3036 | /* don't do anything just yet */; |
e1cd6e56 MS |
3037 | else if (t == wchar_decl_node) |
3038 | { | |
3039 | if (pedantic && ! DECL_IN_SYSTEM_HEADER (x)) | |
3040 | cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x)); | |
3041 | ||
3042 | /* Throw away the redeclaration. */ | |
3043 | return t; | |
3044 | } | |
8926095f | 3045 | else if (TREE_CODE (t) != TREE_CODE (x)) |
8d08fdba | 3046 | { |
00595019 MS |
3047 | if ((TREE_CODE (t) == TYPE_DECL && DECL_ARTIFICIAL (t)) |
3048 | || (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x))) | |
51c184be MS |
3049 | { |
3050 | /* We do nothing special here, because C++ does such nasty | |
3051 | things with TYPE_DECLs. Instead, just let the TYPE_DECL | |
3052 | get shadowed, and know that if we need to find a TYPE_DECL | |
3053 | for a given name, we can look in the IDENTIFIER_TYPE_VALUE | |
3054 | slot of the identifier. */ | |
3055 | ; | |
3056 | } | |
3057 | else if (duplicate_decls (x, t)) | |
3058 | return t; | |
8d08fdba MS |
3059 | } |
3060 | else if (duplicate_decls (x, t)) | |
51c184be | 3061 | { |
8d08fdba | 3062 | #if 0 |
8926095f | 3063 | /* This is turned off until I have time to do it right (bpk). */ |
8d08fdba | 3064 | |
8926095f MS |
3065 | /* Also warn if they did a prototype with `static' on it, but |
3066 | then later left the `static' off. */ | |
3067 | if (! TREE_PUBLIC (name) && TREE_PUBLIC (x)) | |
8d08fdba | 3068 | { |
8926095f MS |
3069 | if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t)) |
3070 | return t; | |
8d08fdba | 3071 | |
8926095f MS |
3072 | if (extra_warnings) |
3073 | { | |
a28e3c7f MS |
3074 | cp_warning ("`static' missing from declaration of `%D'", |
3075 | t); | |
8926095f MS |
3076 | warning_with_file_and_line (file, line, |
3077 | "previous declaration of `%s'", | |
3078 | decl_as_string (t, 0)); | |
3079 | } | |
8d08fdba | 3080 | |
8926095f MS |
3081 | /* Now fix things so it'll do what they expect. */ |
3082 | if (current_function_decl) | |
3083 | TREE_PUBLIC (current_function_decl) = 0; | |
3084 | } | |
51c184be MS |
3085 | /* Due to interference in memory reclamation (X may be |
3086 | obstack-deallocated at this point), we must guard against | |
8926095f MS |
3087 | one really special case. [jason: This should be handled |
3088 | by start_function] */ | |
51c184be MS |
3089 | if (current_function_decl == x) |
3090 | current_function_decl = t; | |
8926095f | 3091 | #endif |
7177d104 MS |
3092 | if (TREE_CODE (t) == TYPE_DECL) |
3093 | SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t)); | |
f30432d7 MS |
3094 | else if (TREE_CODE (t) == FUNCTION_DECL) |
3095 | check_default_args (t); | |
7177d104 | 3096 | |
51c184be MS |
3097 | return t; |
3098 | } | |
8d08fdba | 3099 | } |
8926095f MS |
3100 | |
3101 | if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x)) | |
3102 | { | |
3103 | t = push_overloaded_decl (x, 1); | |
3104 | if (t != x || DECL_LANGUAGE (x) == lang_c) | |
3105 | return t; | |
3106 | } | |
5566b478 | 3107 | else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_CONTEXT (x) == NULL_TREE) |
8926095f | 3108 | return push_overloaded_decl (x, 0); |
8d08fdba MS |
3109 | |
3110 | /* If declaring a type as a typedef, and the type has no known | |
3111 | typedef name, install this TYPE_DECL as its typedef name. */ | |
3112 | if (TREE_CODE (x) == TYPE_DECL) | |
3113 | { | |
3114 | tree type = TREE_TYPE (x); | |
3115 | tree name = (type != error_mark_node) ? TYPE_NAME (type) : x; | |
3116 | ||
3117 | if (name == NULL_TREE || TREE_CODE (name) != TYPE_DECL) | |
3118 | { | |
3119 | /* If these are different names, and we're at the global | |
3120 | binding level, make two equivalent definitions. */ | |
3121 | name = x; | |
3122 | if (global_bindings_p ()) | |
3123 | TYPE_NAME (type) = x; | |
3124 | } | |
3125 | else | |
3126 | { | |
3127 | tree tname = DECL_NAME (name); | |
3128 | ||
8ccc31eb | 3129 | /* This is a disgusting kludge for dealing with UPTs. */ |
8d08fdba MS |
3130 | if (global_bindings_p () && ANON_AGGRNAME_P (tname)) |
3131 | { | |
3132 | /* do gratuitous C++ typedefing, and make sure that | |
3133 | we access this type either through TREE_TYPE field | |
3134 | or via the tags list. */ | |
3135 | TYPE_NAME (TREE_TYPE (x)) = x; | |
3136 | pushtag (tname, TREE_TYPE (x), 0); | |
3137 | } | |
3138 | } | |
3139 | my_friendly_assert (TREE_CODE (name) == TYPE_DECL, 140); | |
3140 | ||
8ccc31eb MS |
3141 | /* Don't set nested_typename on template type parms, for instance. |
3142 | Any artificial decls that need DECL_NESTED_TYPENAME will have it | |
3143 | set in pushtag. */ | |
3144 | if (! DECL_NESTED_TYPENAME (x) && ! DECL_ARTIFICIAL (x)) | |
e1cd6e56 | 3145 | set_nested_typename (x, current_class_name, DECL_NAME (x), type); |
8d08fdba MS |
3146 | |
3147 | if (type != error_mark_node | |
3148 | && TYPE_NAME (type) | |
3149 | && TYPE_IDENTIFIER (type)) | |
3150 | set_identifier_type_value_with_scope (DECL_NAME (x), type, b); | |
3151 | } | |
3152 | ||
3153 | /* Multiple external decls of the same identifier ought to match. | |
3154 | ||
3155 | We get warnings about inline functions where they are defined. | |
39211cd5 MS |
3156 | We get warnings about other functions from push_overloaded_decl. |
3157 | ||
8d08fdba | 3158 | Avoid duplicate warnings where they are used. */ |
39211cd5 | 3159 | if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL) |
8d08fdba MS |
3160 | { |
3161 | tree decl; | |
3162 | ||
3163 | if (IDENTIFIER_GLOBAL_VALUE (name) != NULL_TREE | |
3164 | && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name)) | |
3165 | || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name)))) | |
3166 | decl = IDENTIFIER_GLOBAL_VALUE (name); | |
3167 | else | |
3168 | decl = NULL_TREE; | |
3169 | ||
39211cd5 | 3170 | if (decl |
8d08fdba MS |
3171 | /* If different sort of thing, we already gave an error. */ |
3172 | && TREE_CODE (decl) == TREE_CODE (x) | |
39211cd5 | 3173 | && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1)) |
8d08fdba MS |
3174 | { |
3175 | cp_pedwarn ("type mismatch with previous external decl", x); | |
8926095f | 3176 | cp_pedwarn_at ("previous external decl of `%#D'", decl); |
8d08fdba MS |
3177 | } |
3178 | } | |
3179 | ||
3180 | /* In PCC-compatibility mode, extern decls of vars with no current decl | |
3181 | take effect at top level no matter where they are. */ | |
3182 | if (flag_traditional && DECL_EXTERNAL (x) | |
3183 | && lookup_name (name, 0) == NULL_TREE) | |
3184 | b = global_binding_level; | |
3185 | ||
3186 | /* This name is new in its binding level. | |
3187 | Install the new declaration and return it. */ | |
3188 | if (b == global_binding_level) | |
3189 | { | |
3190 | /* Install a global value. */ | |
3191 | ||
8d08fdba MS |
3192 | /* If the first global decl has external linkage, |
3193 | warn if we later see static one. */ | |
db5ae43f | 3194 | if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && DECL_PUBLIC (x)) |
8d08fdba MS |
3195 | TREE_PUBLIC (name) = 1; |
3196 | ||
e1cd6e56 MS |
3197 | /* Don't install an artificial TYPE_DECL if we already have |
3198 | another _DECL with that name. */ | |
8d08fdba MS |
3199 | if (TREE_CODE (x) != TYPE_DECL |
3200 | || t == NULL_TREE | |
e1cd6e56 | 3201 | || ! DECL_ARTIFICIAL (x)) |
8d08fdba MS |
3202 | IDENTIFIER_GLOBAL_VALUE (name) = x; |
3203 | ||
3204 | /* Don't forget if the function was used via an implicit decl. */ | |
3205 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
3206 | && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name))) | |
3207 | TREE_USED (x) = 1; | |
3208 | ||
3209 | /* Don't forget if its address was taken in that way. */ | |
3210 | if (IDENTIFIER_IMPLICIT_DECL (name) | |
3211 | && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name))) | |
3212 | TREE_ADDRESSABLE (x) = 1; | |
3213 | ||
3214 | /* Warn about mismatches against previous implicit decl. */ | |
3215 | if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE | |
3216 | /* If this real decl matches the implicit, don't complain. */ | |
3217 | && ! (TREE_CODE (x) == FUNCTION_DECL | |
3218 | && TREE_TYPE (TREE_TYPE (x)) == integer_type_node)) | |
3219 | cp_warning | |
3220 | ("`%D' was previously implicitly declared to return `int'", x); | |
3221 | ||
3222 | /* If new decl is `static' and an `extern' was seen previously, | |
3223 | warn about it. */ | |
a0a33927 MS |
3224 | if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t)) |
3225 | warn_extern_redeclared_static (x, t); | |
8d08fdba MS |
3226 | } |
3227 | else | |
3228 | { | |
3229 | /* Here to install a non-global value. */ | |
3230 | tree oldlocal = IDENTIFIER_LOCAL_VALUE (name); | |
3231 | tree oldglobal = IDENTIFIER_GLOBAL_VALUE (name); | |
3232 | ||
e1cd6e56 MS |
3233 | /* Don't install an artificial TYPE_DECL if we already have |
3234 | another _DECL with that name. */ | |
3235 | if (TREE_CODE (x) != TYPE_DECL | |
3236 | || t == NULL_TREE | |
3237 | || ! DECL_ARTIFICIAL (x)) | |
3238 | { | |
3239 | b->shadowed = tree_cons (name, oldlocal, b->shadowed); | |
3240 | IDENTIFIER_LOCAL_VALUE (name) = x; | |
3241 | } | |
8d08fdba MS |
3242 | |
3243 | /* If this is a TYPE_DECL, push it into the type value slot. */ | |
3244 | if (TREE_CODE (x) == TYPE_DECL) | |
3245 | set_identifier_type_value_with_scope (name, TREE_TYPE (x), b); | |
3246 | ||
a9aedbc2 MS |
3247 | /* Clear out any TYPE_DECL shadowed by a namespace so that |
3248 | we won't think this is a type. The C struct hack doesn't | |
3249 | go through namespaces. */ | |
3250 | if (TREE_CODE (x) == NAMESPACE_DECL) | |
3251 | set_identifier_type_value_with_scope (name, NULL_TREE, b); | |
3252 | ||
8d08fdba MS |
3253 | /* If this is an extern function declaration, see if we |
3254 | have a global definition or declaration for the function. */ | |
3255 | if (oldlocal == NULL_TREE | |
faae18ab | 3256 | && DECL_EXTERNAL (x) |
8d08fdba MS |
3257 | && oldglobal != NULL_TREE |
3258 | && TREE_CODE (x) == FUNCTION_DECL | |
3259 | && TREE_CODE (oldglobal) == FUNCTION_DECL) | |
3260 | { | |
3261 | /* We have one. Their types must agree. */ | |
44a8d0b3 | 3262 | if (decls_match (x, oldglobal)) |
6060a796 MS |
3263 | /* OK */; |
3264 | else | |
8d08fdba MS |
3265 | { |
3266 | cp_warning ("extern declaration of `%#D' doesn't match", x); | |
3267 | cp_warning_at ("global declaration `%#D'", oldglobal); | |
3268 | } | |
8d08fdba MS |
3269 | } |
3270 | /* If we have a local external declaration, | |
3271 | and no file-scope declaration has yet been seen, | |
3272 | then if we later have a file-scope decl it must not be static. */ | |
3273 | if (oldlocal == NULL_TREE | |
3274 | && oldglobal == NULL_TREE | |
3275 | && DECL_EXTERNAL (x) | |
3276 | && TREE_PUBLIC (x)) | |
3277 | { | |
3278 | TREE_PUBLIC (name) = 1; | |
3279 | } | |
3280 | ||
3281 | if (DECL_FROM_INLINE (x)) | |
3282 | /* Inline decls shadow nothing. */; | |
3283 | ||
3284 | /* Warn if shadowing an argument at the top level of the body. */ | |
3285 | else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x) | |
3286 | && TREE_CODE (oldlocal) == PARM_DECL | |
3287 | && TREE_CODE (x) != PARM_DECL) | |
3288 | { | |
3289 | /* Go to where the parms should be and see if we | |
3290 | find them there. */ | |
3291 | struct binding_level *b = current_binding_level->level_chain; | |
3292 | ||
3293 | if (cleanup_label) | |
3294 | b = b->level_chain; | |
3295 | ||
3296 | /* ARM $8.3 */ | |
3297 | if (b->parm_flag == 1) | |
3298 | cp_error ("declaration of `%#D' shadows a parameter", name); | |
3299 | } | |
72b7eeff | 3300 | else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope |
8d6e462b PB |
3301 | && !DECL_DEAD_FOR_LOCAL (oldlocal)) |
3302 | { | |
3303 | warning ("variable `%s' shadows local", | |
3304 | IDENTIFIER_POINTER (name)); | |
3305 | cp_warning_at (" this is the shadowed declaration", oldlocal); | |
3306 | } | |
8d08fdba MS |
3307 | /* Maybe warn if shadowing something else. */ |
3308 | else if (warn_shadow && !DECL_EXTERNAL (x) | |
3309 | /* No shadow warnings for internally generated vars. */ | |
700f8a87 | 3310 | && ! DECL_ARTIFICIAL (x) |
8d08fdba MS |
3311 | /* No shadow warnings for vars made for inlining. */ |
3312 | && ! DECL_FROM_INLINE (x)) | |
3313 | { | |
3314 | char *warnstring = NULL; | |
3315 | ||
3316 | if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL) | |
3317 | warnstring = "declaration of `%s' shadows a parameter"; | |
3318 | else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE | |
f30432d7 | 3319 | && current_class_decl |
8d08fdba MS |
3320 | && !TREE_STATIC (name)) |
3321 | warnstring = "declaration of `%s' shadows a member of `this'"; | |
3322 | else if (oldlocal != NULL_TREE) | |
3323 | warnstring = "declaration of `%s' shadows previous local"; | |
3324 | else if (oldglobal != NULL_TREE) | |
3325 | warnstring = "declaration of `%s' shadows global declaration"; | |
3326 | ||
3327 | if (warnstring) | |
3328 | warning (warnstring, IDENTIFIER_POINTER (name)); | |
3329 | } | |
e1cd6e56 | 3330 | } |
8d08fdba | 3331 | |
e1cd6e56 | 3332 | if (TREE_CODE (x) == FUNCTION_DECL) |
f30432d7 | 3333 | check_default_args (x); |
8145f082 MS |
3334 | |
3335 | /* Keep count of variables in this level with incomplete type. */ | |
8145f082 | 3336 | if (TREE_CODE (x) == VAR_DECL |
28cbf42c | 3337 | && TREE_TYPE (x) != error_mark_node |
f30432d7 MS |
3338 | && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE |
3339 | && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE)) | |
3340 | /* RTTI TD entries are created while defining the type_info. */ | |
3341 | || (TYPE_LANG_SPECIFIC (TREE_TYPE (x)) | |
3342 | && TYPE_BEING_DEFINED (TREE_TYPE (x))))) | |
3343 | b->incomplete = tree_cons (NULL_TREE, x, b->incomplete); | |
8d08fdba MS |
3344 | } |
3345 | ||
8d08fdba MS |
3346 | /* Put decls on list in reverse order. |
3347 | We will reverse them later if necessary. */ | |
3348 | TREE_CHAIN (x) = b->names; | |
3349 | b->names = x; | |
3350 | if (! (b != global_binding_level || TREE_PERMANENT (x))) | |
3351 | my_friendly_abort (124); | |
3352 | ||
3353 | return x; | |
3354 | } | |
3355 | ||
5566b478 MS |
3356 | /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the |
3357 | caller to set DECL_CONTEXT properly. */ | |
8d08fdba MS |
3358 | |
3359 | static tree | |
3360 | pushdecl_with_scope (x, level) | |
3361 | tree x; | |
3362 | struct binding_level *level; | |
3363 | { | |
3364 | register struct binding_level *b = current_binding_level; | |
5566b478 | 3365 | tree function_decl = current_function_decl; |
8d08fdba | 3366 | |
5566b478 | 3367 | current_function_decl = NULL_TREE; |
8d08fdba MS |
3368 | current_binding_level = level; |
3369 | x = pushdecl (x); | |
3370 | current_binding_level = b; | |
5566b478 | 3371 | current_function_decl = function_decl; |
8d08fdba MS |
3372 | return x; |
3373 | } | |
3374 | ||
3375 | /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL, | |
3376 | if appropriate. */ | |
3377 | tree | |
3378 | pushdecl_top_level (x) | |
3379 | tree x; | |
3380 | { | |
3381 | register struct binding_level *b = inner_binding_level; | |
3382 | register tree t = pushdecl_with_scope (x, global_binding_level); | |
3383 | ||
3384 | /* Now, the type_shadowed stack may screw us. Munge it so it does | |
3385 | what we want. */ | |
3386 | if (TREE_CODE (x) == TYPE_DECL) | |
3387 | { | |
3388 | tree name = DECL_NAME (x); | |
3389 | tree newval; | |
3390 | tree *ptr = (tree *)0; | |
3391 | for (; b != global_binding_level; b = b->level_chain) | |
3392 | { | |
3393 | tree shadowed = b->type_shadowed; | |
3394 | for (; shadowed; shadowed = TREE_CHAIN (shadowed)) | |
3395 | if (TREE_PURPOSE (shadowed) == name) | |
3396 | { | |
3397 | ptr = &TREE_VALUE (shadowed); | |
3398 | /* Can't break out of the loop here because sometimes | |
3399 | a binding level will have duplicate bindings for | |
3400 | PT names. It's gross, but I haven't time to fix it. */ | |
3401 | } | |
3402 | } | |
3403 | newval = TREE_TYPE (x); | |
3404 | if (ptr == (tree *)0) | |
3405 | { | |
3406 | /* @@ This shouldn't be needed. My test case "zstring.cc" trips | |
3407 | up here if this is changed to an assertion. --KR */ | |
3408 | SET_IDENTIFIER_TYPE_VALUE (name, newval); | |
3409 | } | |
3410 | else | |
3411 | { | |
8d08fdba MS |
3412 | *ptr = newval; |
3413 | } | |
3414 | } | |
3415 | return t; | |
3416 | } | |
3417 | ||
3418 | /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL, | |
3419 | if appropriate. */ | |
3420 | void | |
3421 | push_overloaded_decl_top_level (x, forget) | |
3422 | tree x; | |
3423 | int forget; | |
3424 | { | |
3425 | struct binding_level *b = current_binding_level; | |
3426 | ||
3427 | current_binding_level = global_binding_level; | |
3428 | push_overloaded_decl (x, forget); | |
3429 | current_binding_level = b; | |
3430 | } | |
3431 | ||
3432 | /* Make the declaration of X appear in CLASS scope. */ | |
3433 | tree | |
3434 | pushdecl_class_level (x) | |
3435 | tree x; | |
3436 | { | |
3437 | /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class | |
3438 | scope looks for the pre-mangled name. */ | |
3439 | register tree name = DECL_NAME (x); | |
3440 | ||
3441 | if (name) | |
3442 | { | |
8d2733ca MS |
3443 | if (TYPE_BEING_DEFINED (current_class_type)) |
3444 | { | |
3445 | /* Check for inconsistent use of this name in the class body. | |
3446 | Types, enums, and static vars are checked here; other | |
3447 | members are checked in finish_struct. */ | |
3448 | tree icv = IDENTIFIER_CLASS_VALUE (name); | |
3449 | ||
5566b478 | 3450 | if (icv && icv != x |
a4443a08 MS |
3451 | /* Don't complain about inherited names. */ |
3452 | && id_in_current_class (name) | |
3453 | /* Or shadowed tags. */ | |
3454 | && !(TREE_CODE (icv) == TYPE_DECL | |
3455 | && DECL_CONTEXT (icv) == current_class_type)) | |
8d2733ca MS |
3456 | { |
3457 | cp_error ("declaration of identifier `%D' as `%#D'", name, x); | |
3458 | cp_error_at ("conflicts with previous use in class as `%#D'", | |
3459 | icv); | |
3460 | } | |
3461 | } | |
3462 | ||
8d08fdba MS |
3463 | push_class_level_binding (name, x); |
3464 | if (TREE_CODE (x) == TYPE_DECL) | |
3465 | { | |
3466 | set_identifier_type_value (name, TREE_TYPE (x)); | |
8ccc31eb MS |
3467 | |
3468 | /* Don't set nested_typename on template type parms, for instance. | |
3469 | Any artificial decls that need DECL_NESTED_TYPENAME will have it | |
3470 | set in pushtag. */ | |
3471 | if (! DECL_NESTED_TYPENAME (x) && ! DECL_ARTIFICIAL (x)) | |
8d08fdba MS |
3472 | set_nested_typename (x, current_class_name, name, TREE_TYPE (x)); |
3473 | } | |
3474 | } | |
3475 | return x; | |
3476 | } | |
3477 | ||
7177d104 MS |
3478 | /* This function is used to push the mangled decls for nested types into |
3479 | the appropriate scope. Previously pushdecl_top_level was used, but that | |
3480 | is incorrect for members of local classes. */ | |
5566b478 | 3481 | void |
7177d104 MS |
3482 | pushdecl_nonclass_level (x) |
3483 | tree x; | |
3484 | { | |
3485 | struct binding_level *b = current_binding_level; | |
3486 | ||
7177d104 | 3487 | my_friendly_assert (b->parm_flag != 2, 180); |
7177d104 | 3488 | |
5566b478 | 3489 | #if 0 |
7177d104 MS |
3490 | /* Get out of template binding levels */ |
3491 | while (b->pseudo_global) | |
3492 | b = b->level_chain; | |
5566b478 | 3493 | #endif |
7177d104 MS |
3494 | |
3495 | pushdecl_with_scope (x, b); | |
3496 | } | |
3497 | ||
8d08fdba MS |
3498 | /* Make the declaration(s) of X appear in CLASS scope |
3499 | under the name NAME. */ | |
3500 | void | |
3501 | push_class_level_binding (name, x) | |
3502 | tree name; | |
3503 | tree x; | |
3504 | { | |
e1cd6e56 MS |
3505 | if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x) |
3506 | && purpose_member (name, class_binding_level->class_shadowed)) | |
3507 | return; | |
3508 | ||
8d08fdba MS |
3509 | maybe_push_cache_obstack (); |
3510 | class_binding_level->class_shadowed | |
3511 | = tree_cons (name, IDENTIFIER_CLASS_VALUE (name), | |
3512 | class_binding_level->class_shadowed); | |
3513 | pop_obstacks (); | |
3514 | IDENTIFIER_CLASS_VALUE (name) = x; | |
3515 | obstack_ptr_grow (&decl_obstack, x); | |
3516 | } | |
3517 | ||
3518 | /* Tell caller how to interpret a TREE_LIST which contains | |
3519 | chains of FUNCTION_DECLS. */ | |
3520 | int | |
3521 | overloaded_globals_p (list) | |
3522 | tree list; | |
3523 | { | |
3524 | my_friendly_assert (TREE_CODE (list) == TREE_LIST, 142); | |
3525 | ||
3526 | /* Don't commit caller to seeing them as globals. */ | |
3527 | if (TREE_NONLOCAL_FLAG (list)) | |
3528 | return -1; | |
8d08fdba | 3529 | /* Do commit caller to not seeing them as globals. */ |
5566b478 MS |
3530 | if (TREE_CODE (TREE_VALUE (list)) == TREE_LIST) |
3531 | return 0; | |
3532 | /* Do commit caller to seeing them as globals. */ | |
3533 | return 1; | |
8d08fdba MS |
3534 | } |
3535 | ||
700f8a87 MS |
3536 | /* DECL is a FUNCTION_DECL which may have other definitions already in |
3537 | place. We get around this by making the value of the identifier point | |
3538 | to a list of all the things that want to be referenced by that name. It | |
3539 | is then up to the users of that name to decide what to do with that | |
8d08fdba MS |
3540 | list. |
3541 | ||
3542 | DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT | |
3543 | slot. It is dealt with the same way. | |
3544 | ||
3545 | The value returned may be a previous declaration if we guessed wrong | |
3546 | about what language DECL should belong to (C or C++). Otherwise, | |
3547 | it's always DECL (and never something that's not a _DECL). */ | |
3548 | tree | |
3549 | push_overloaded_decl (decl, forgettable) | |
3550 | tree decl; | |
3551 | int forgettable; | |
3552 | { | |
3553 | tree orig_name = DECL_NAME (decl); | |
700f8a87 | 3554 | tree old; |
5566b478 | 3555 | int doing_global = (global_bindings_p () || ! forgettable); |
700f8a87 MS |
3556 | |
3557 | if (doing_global) | |
3558 | { | |
3559 | old = IDENTIFIER_GLOBAL_VALUE (orig_name); | |
3560 | if (old && TREE_CODE (old) == FUNCTION_DECL | |
a4443a08 | 3561 | && DECL_ARTIFICIAL (old) |
700f8a87 MS |
3562 | && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old))) |
3563 | { | |
a4443a08 MS |
3564 | if (duplicate_decls (decl, old)) |
3565 | return old; | |
700f8a87 MS |
3566 | old = NULL_TREE; |
3567 | } | |
3568 | } | |
3569 | else | |
3570 | { | |
3571 | old = IDENTIFIER_LOCAL_VALUE (orig_name); | |
a4443a08 | 3572 | |
700f8a87 MS |
3573 | if (! purpose_member (orig_name, current_binding_level->shadowed)) |
3574 | { | |
3575 | current_binding_level->shadowed | |
3576 | = tree_cons (orig_name, old, current_binding_level->shadowed); | |
3577 | old = NULL_TREE; | |
3578 | } | |
3579 | } | |
8d08fdba | 3580 | |
700f8a87 | 3581 | if (old) |
8d08fdba | 3582 | { |
e1cd6e56 | 3583 | if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old)) |
8926095f | 3584 | { |
700f8a87 | 3585 | tree t = TREE_TYPE (old); |
8926095f MS |
3586 | if (IS_AGGR_TYPE (t) && warn_shadow) |
3587 | cp_warning ("`%#D' hides constructor for `%#T'", decl, t); | |
5b605f68 | 3588 | old = NULL_TREE; |
8926095f | 3589 | } |
700f8a87 | 3590 | else if (is_overloaded_fn (old)) |
8d08fdba | 3591 | { |
8d08fdba MS |
3592 | tree tmp; |
3593 | ||
700f8a87 MS |
3594 | for (tmp = get_first_fn (old); tmp; tmp = DECL_CHAIN (tmp)) |
3595 | if (decl == tmp || duplicate_decls (decl, tmp)) | |
3596 | return tmp; | |
8d08fdba | 3597 | } |
e1cd6e56 MS |
3598 | else |
3599 | { | |
3600 | cp_error_at ("previous non-function declaration `%#D'", old); | |
3601 | cp_error ("conflicts with function declaration `%#D'", decl); | |
a9aedbc2 | 3602 | return decl; |
e1cd6e56 | 3603 | } |
8d08fdba | 3604 | } |
7177d104 | 3605 | |
700f8a87 | 3606 | if (old || TREE_CODE (decl) == TEMPLATE_DECL) |
8d08fdba | 3607 | { |
700f8a87 MS |
3608 | if (old && is_overloaded_fn (old)) |
3609 | DECL_CHAIN (decl) = get_first_fn (old); | |
8d08fdba MS |
3610 | else |
3611 | DECL_CHAIN (decl) = NULL_TREE; | |
700f8a87 MS |
3612 | old = tree_cons (orig_name, decl, NULL_TREE); |
3613 | TREE_TYPE (old) = unknown_type_node; | |
8d08fdba MS |
3614 | } |
3615 | else | |
3616 | /* orig_name is not ambiguous. */ | |
700f8a87 MS |
3617 | old = decl; |
3618 | ||
3619 | if (doing_global) | |
3620 | IDENTIFIER_GLOBAL_VALUE (orig_name) = old; | |
3621 | else | |
3622 | IDENTIFIER_LOCAL_VALUE (orig_name) = old; | |
3623 | ||
8d08fdba MS |
3624 | return decl; |
3625 | } | |
3626 | \f | |
3627 | /* Generate an implicit declaration for identifier FUNCTIONID | |
3628 | as a function of type int (). Print a warning if appropriate. */ | |
3629 | ||
3630 | tree | |
3631 | implicitly_declare (functionid) | |
3632 | tree functionid; | |
3633 | { | |
3634 | register tree decl; | |
3635 | int temp = allocation_temporary_p (); | |
3636 | ||
3637 | push_obstacks_nochange (); | |
3638 | ||
3639 | /* Save the decl permanently so we can warn if definition follows. | |
3640 | In ANSI C, warn_implicit is usually false, so the saves little space. | |
3641 | But in C++, it's usually true, hence the extra code. */ | |
a9aedbc2 | 3642 | if (temp && (flag_traditional || !warn_implicit || toplevel_bindings_p ())) |
8d08fdba MS |
3643 | end_temporary_allocation (); |
3644 | ||
3645 | /* We used to reuse an old implicit decl here, | |
3646 | but this loses with inline functions because it can clobber | |
3647 | the saved decl chains. */ | |
3648 | decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type); | |
3649 | ||
3650 | DECL_EXTERNAL (decl) = 1; | |
3651 | TREE_PUBLIC (decl) = 1; | |
3652 | ||
3653 | /* ANSI standard says implicit declarations are in the innermost block. | |
3654 | So we record the decl in the standard fashion. | |
3655 | If flag_traditional is set, pushdecl does it top-level. */ | |
3656 | pushdecl (decl); | |
3657 | rest_of_decl_compilation (decl, NULL_PTR, 0, 0); | |
3658 | ||
3659 | if (warn_implicit | |
3660 | /* Only one warning per identifier. */ | |
3661 | && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE) | |
3662 | { | |
3663 | cp_pedwarn ("implicit declaration of function `%#D'", decl); | |
3664 | } | |
3665 | ||
3666 | SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl); | |
3667 | ||
3668 | pop_obstacks (); | |
3669 | ||
3670 | return decl; | |
3671 | } | |
3672 | ||
3673 | /* Return zero if the declaration NEWDECL is valid | |
3674 | when the declaration OLDDECL (assumed to be for the same name) | |
3675 | has already been seen. | |
3676 | Otherwise return an error message format string with a %s | |
3677 | where the identifier should go. */ | |
3678 | ||
3679 | static char * | |
3680 | redeclaration_error_message (newdecl, olddecl) | |
3681 | tree newdecl, olddecl; | |
3682 | { | |
3683 | if (TREE_CODE (newdecl) == TYPE_DECL) | |
3684 | { | |
3685 | /* Because C++ can put things into name space for free, | |
3686 | constructs like "typedef struct foo { ... } foo" | |
3687 | would look like an erroneous redeclaration. */ | |
8926095f | 3688 | if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0)) |
8d08fdba MS |
3689 | return 0; |
3690 | else | |
51c184be | 3691 | return "redefinition of `%#D'"; |
8d08fdba MS |
3692 | } |
3693 | else if (TREE_CODE (newdecl) == FUNCTION_DECL) | |
3694 | { | |
3695 | /* If this is a pure function, its olddecl will actually be | |
3696 | the original initialization to `0' (which we force to call | |
3697 | abort()). Don't complain about redefinition in this case. */ | |
3698 | if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl)) | |
3699 | return 0; | |
3700 | ||
db5ae43f MS |
3701 | /* We'll complain about linkage mismatches in |
3702 | warn_extern_redeclared_static. */ | |
3703 | ||
3704 | /* defining the same name twice is no good. */ | |
8d08fdba | 3705 | if (DECL_INITIAL (olddecl) != NULL_TREE |
faae18ab | 3706 | && DECL_INITIAL (newdecl) != NULL_TREE) |
8d08fdba MS |
3707 | { |
3708 | if (DECL_NAME (olddecl) == NULL_TREE) | |
51c184be | 3709 | return "`%#D' not declared in class"; |
8d08fdba | 3710 | else |
51c184be | 3711 | return "redefinition of `%#D'"; |
8d08fdba MS |
3712 | } |
3713 | return 0; | |
3714 | } | |
51c184be MS |
3715 | else if (TREE_CODE (newdecl) == TEMPLATE_DECL) |
3716 | { | |
3717 | if (DECL_INITIAL (olddecl) && DECL_INITIAL (newdecl)) | |
3718 | return "redefinition of `%#D'"; | |
3719 | return 0; | |
3720 | } | |
5566b478 | 3721 | else if (toplevel_bindings_p ()) |
8d08fdba MS |
3722 | { |
3723 | /* Objects declared at top level: */ | |
3724 | /* If at least one is a reference, it's ok. */ | |
3725 | if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl)) | |
3726 | return 0; | |
8926095f MS |
3727 | /* Reject two definitions. */ |
3728 | return "redefinition of `%#D'"; | |
8d08fdba MS |
3729 | } |
3730 | else | |
3731 | { | |
3732 | /* Objects declared with block scope: */ | |
3733 | /* Reject two definitions, and reject a definition | |
3734 | together with an external reference. */ | |
3735 | if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl))) | |
51c184be | 3736 | return "redeclaration of `%#D'"; |
8d08fdba MS |
3737 | return 0; |
3738 | } | |
3739 | } | |
3740 | \f | |
3741 | /* Get the LABEL_DECL corresponding to identifier ID as a label. | |
3742 | Create one if none exists so far for the current function. | |
3743 | This function is called for both label definitions and label references. */ | |
3744 | ||
3745 | tree | |
3746 | lookup_label (id) | |
3747 | tree id; | |
3748 | { | |
3749 | register tree decl = IDENTIFIER_LABEL_VALUE (id); | |
3750 | ||
3751 | if (current_function_decl == NULL_TREE) | |
3752 | { | |
3753 | error ("label `%s' referenced outside of any function", | |
3754 | IDENTIFIER_POINTER (id)); | |
3755 | return NULL_TREE; | |
3756 | } | |
3757 | ||
3758 | if ((decl == NULL_TREE | |
3759 | || DECL_SOURCE_LINE (decl) == 0) | |
3760 | && (named_label_uses == NULL_TREE | |
3761 | || TREE_PURPOSE (named_label_uses) != current_binding_level->names | |
3762 | || TREE_VALUE (named_label_uses) != decl)) | |
3763 | { | |
3764 | named_label_uses | |
3765 | = tree_cons (current_binding_level->names, decl, named_label_uses); | |
3766 | TREE_TYPE (named_label_uses) = (tree)current_binding_level; | |
3767 | } | |
3768 | ||
3769 | /* Use a label already defined or ref'd with this name. */ | |
3770 | if (decl != NULL_TREE) | |
3771 | { | |
3772 | /* But not if it is inherited and wasn't declared to be inheritable. */ | |
3773 | if (DECL_CONTEXT (decl) != current_function_decl | |
3774 | && ! C_DECLARED_LABEL_FLAG (decl)) | |
3775 | return shadow_label (id); | |
3776 | return decl; | |
3777 | } | |
3778 | ||
3779 | decl = build_decl (LABEL_DECL, id, void_type_node); | |
3780 | ||
cffa8729 MS |
3781 | /* Make sure every label has an rtx. */ |
3782 | label_rtx (decl); | |
3783 | ||
8d08fdba MS |
3784 | /* A label not explicitly declared must be local to where it's ref'd. */ |
3785 | DECL_CONTEXT (decl) = current_function_decl; | |
3786 | ||
3787 | DECL_MODE (decl) = VOIDmode; | |
3788 | ||
3789 | /* Say where one reference is to the label, | |
3790 | for the sake of the error if it is not defined. */ | |
3791 | DECL_SOURCE_LINE (decl) = lineno; | |
3792 | DECL_SOURCE_FILE (decl) = input_filename; | |
3793 | ||
3794 | SET_IDENTIFIER_LABEL_VALUE (id, decl); | |
3795 | ||
3796 | named_labels = tree_cons (NULL_TREE, decl, named_labels); | |
3797 | TREE_VALUE (named_label_uses) = decl; | |
3798 | ||
3799 | return decl; | |
3800 | } | |
3801 | ||
3802 | /* Make a label named NAME in the current function, | |
3803 | shadowing silently any that may be inherited from containing functions | |
3804 | or containing scopes. | |
3805 | ||
3806 | Note that valid use, if the label being shadowed | |
3807 | comes from another scope in the same function, | |
3808 | requires calling declare_nonlocal_label right away. */ | |
3809 | ||
3810 | tree | |
3811 | shadow_label (name) | |
3812 | tree name; | |
3813 | { | |
3814 | register tree decl = IDENTIFIER_LABEL_VALUE (name); | |
3815 | ||
3816 | if (decl != NULL_TREE) | |
3817 | { | |
3818 | shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels); | |
3819 | SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE); | |
3820 | SET_IDENTIFIER_LABEL_VALUE (decl, NULL_TREE); | |
3821 | } | |
3822 | ||
3823 | return lookup_label (name); | |
3824 | } | |
3825 | ||
3826 | /* Define a label, specifying the location in the source file. | |
3827 | Return the LABEL_DECL node for the label, if the definition is valid. | |
3828 | Otherwise return 0. */ | |
3829 | ||
3830 | tree | |
3831 | define_label (filename, line, name) | |
3832 | char *filename; | |
3833 | int line; | |
3834 | tree name; | |
3835 | { | |
5566b478 MS |
3836 | tree decl; |
3837 | ||
3838 | if (minimal_parse_mode) | |
3839 | { | |
3840 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
3841 | decl = build_decl (LABEL_DECL, name, void_type_node); | |
3842 | pop_obstacks (); | |
3843 | DECL_SOURCE_LINE (decl) = line; | |
3844 | DECL_SOURCE_FILE (decl) = filename; | |
3845 | add_tree (decl); | |
3846 | return decl; | |
3847 | } | |
3848 | ||
3849 | decl = lookup_label (name); | |
8d08fdba MS |
3850 | |
3851 | /* After labels, make any new cleanups go into their | |
3852 | own new (temporary) binding contour. */ | |
3853 | current_binding_level->more_cleanups_ok = 0; | |
3854 | ||
3855 | /* If label with this name is known from an outer context, shadow it. */ | |
3856 | if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl) | |
3857 | { | |
3858 | shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels); | |
3859 | SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE); | |
3860 | decl = lookup_label (name); | |
3861 | } | |
3862 | ||
e1cd6e56 MS |
3863 | if (name == get_identifier ("wchar_t")) |
3864 | cp_pedwarn ("label named wchar_t"); | |
3865 | ||
8d08fdba MS |
3866 | if (DECL_INITIAL (decl) != NULL_TREE) |
3867 | { | |
3868 | cp_error ("duplicate label `%D'", decl); | |
3869 | return 0; | |
3870 | } | |
3871 | else | |
3872 | { | |
3873 | tree uses, prev; | |
28cbf42c | 3874 | int identified = 0; |
8d08fdba MS |
3875 | |
3876 | /* Mark label as having been defined. */ | |
3877 | DECL_INITIAL (decl) = error_mark_node; | |
3878 | /* Say where in the source. */ | |
3879 | DECL_SOURCE_FILE (decl) = filename; | |
3880 | DECL_SOURCE_LINE (decl) = line; | |
3881 | ||
3882 | for (prev = NULL_TREE, uses = named_label_uses; | |
3883 | uses; | |
3884 | prev = uses, uses = TREE_CHAIN (uses)) | |
3885 | if (TREE_VALUE (uses) == decl) | |
3886 | { | |
3887 | struct binding_level *b = current_binding_level; | |
3888 | while (b) | |
3889 | { | |
3890 | tree new_decls = b->names; | |
3891 | tree old_decls = ((tree)b == TREE_TYPE (uses) | |
3892 | ? TREE_PURPOSE (uses) : NULL_TREE); | |
3893 | while (new_decls != old_decls) | |
3894 | { | |
3895 | if (TREE_CODE (new_decls) == VAR_DECL | |
3896 | /* Don't complain about crossing initialization | |
3897 | of internal entities. They can't be accessed, | |
3898 | and they should be cleaned up | |
3899 | by the time we get to the label. */ | |
700f8a87 | 3900 | && ! DECL_ARTIFICIAL (new_decls) |
8d08fdba MS |
3901 | && ((DECL_INITIAL (new_decls) != NULL_TREE |
3902 | && DECL_INITIAL (new_decls) != error_mark_node) | |
3903 | || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls)))) | |
3904 | { | |
28cbf42c MS |
3905 | if (! identified) |
3906 | cp_error ("jump to label `%D'", decl); | |
3907 | identified = 1; | |
3908 | cp_error_at (" crosses initialization of `%#D'", | |
3909 | new_decls); | |
8d08fdba MS |
3910 | } |
3911 | new_decls = TREE_CHAIN (new_decls); | |
3912 | } | |
3913 | if ((tree)b == TREE_TYPE (uses)) | |
3914 | break; | |
3915 | b = b->level_chain; | |
3916 | } | |
3917 | ||
3918 | if (prev) | |
3919 | TREE_CHAIN (prev) = TREE_CHAIN (uses); | |
3920 | else | |
3921 | named_label_uses = TREE_CHAIN (uses); | |
3922 | } | |
3923 | current_function_return_value = NULL_TREE; | |
3924 | return decl; | |
3925 | } | |
3926 | } | |
3927 | ||
a5894242 MS |
3928 | struct cp_switch |
3929 | { | |
3930 | struct binding_level *level; | |
3931 | struct cp_switch *next; | |
3932 | }; | |
3933 | ||
3934 | static struct cp_switch *switch_stack; | |
3935 | ||
3936 | void | |
3937 | push_switch () | |
3938 | { | |
3939 | struct cp_switch *p | |
3940 | = (struct cp_switch *) oballoc (sizeof (struct cp_switch)); | |
3941 | p->level = current_binding_level; | |
3942 | p->next = switch_stack; | |
3943 | switch_stack = p; | |
3944 | } | |
3945 | ||
3946 | void | |
3947 | pop_switch () | |
3948 | { | |
3949 | switch_stack = switch_stack->next; | |
3950 | } | |
3951 | ||
8d08fdba MS |
3952 | /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */ |
3953 | /* XXX Note decl is never actually used. (bpk) */ | |
3954 | void | |
3955 | define_case_label (decl) | |
3956 | tree decl; | |
3957 | { | |
3958 | tree cleanup = last_cleanup_this_contour (); | |
a5894242 MS |
3959 | struct binding_level *b = current_binding_level; |
3960 | int identified = 0; | |
3961 | ||
8d08fdba MS |
3962 | if (cleanup) |
3963 | { | |
3964 | static int explained = 0; | |
a5894242 MS |
3965 | cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup)); |
3966 | warning ("where case label appears here"); | |
8d08fdba MS |
3967 | if (!explained) |
3968 | { | |
a5894242 MS |
3969 | warning ("(enclose actions of previous case statements requiring"); |
3970 | warning ("destructors in their own binding contours.)"); | |
8d08fdba MS |
3971 | explained = 1; |
3972 | } | |
3973 | } | |
3974 | ||
a5894242 MS |
3975 | for (; b && b != switch_stack->level; b = b->level_chain) |
3976 | { | |
3977 | tree new_decls = b->names; | |
3978 | for (; new_decls; new_decls = TREE_CHAIN (new_decls)) | |
3979 | { | |
3980 | if (TREE_CODE (new_decls) == VAR_DECL | |
3981 | /* Don't complain about crossing initialization | |
3982 | of internal entities. They can't be accessed, | |
3983 | and they should be cleaned up | |
3984 | by the time we get to the label. */ | |
3985 | && ! DECL_ARTIFICIAL (new_decls) | |
3986 | && ((DECL_INITIAL (new_decls) != NULL_TREE | |
3987 | && DECL_INITIAL (new_decls) != error_mark_node) | |
3988 | || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls)))) | |
3989 | { | |
3990 | if (! identified) | |
3991 | error ("jump to case label"); | |
3992 | identified = 1; | |
3993 | cp_error_at (" crosses initialization of `%#D'", | |
3994 | new_decls); | |
3995 | } | |
3996 | } | |
3997 | } | |
3998 | ||
8d08fdba MS |
3999 | /* After labels, make any new cleanups go into their |
4000 | own new (temporary) binding contour. */ | |
4001 | ||
4002 | current_binding_level->more_cleanups_ok = 0; | |
4003 | current_function_return_value = NULL_TREE; | |
4004 | } | |
4005 | \f | |
4006 | /* Return the list of declarations of the current level. | |
4007 | Note that this list is in reverse order unless/until | |
4008 | you nreverse it; and when you do nreverse it, you must | |
4009 | store the result back using `storedecls' or you will lose. */ | |
4010 | ||
4011 | tree | |
4012 | getdecls () | |
4013 | { | |
4014 | return current_binding_level->names; | |
4015 | } | |
4016 | ||
4017 | /* Return the list of type-tags (for structs, etc) of the current level. */ | |
4018 | ||
4019 | tree | |
4020 | gettags () | |
4021 | { | |
4022 | return current_binding_level->tags; | |
4023 | } | |
4024 | ||
4025 | /* Store the list of declarations of the current level. | |
4026 | This is done for the parameter declarations of a function being defined, | |
4027 | after they are modified in the light of any missing parameters. */ | |
4028 | ||
4029 | static void | |
4030 | storedecls (decls) | |
4031 | tree decls; | |
4032 | { | |
4033 | current_binding_level->names = decls; | |
4034 | } | |
4035 | ||
4036 | /* Similarly, store the list of tags of the current level. */ | |
4037 | ||
4038 | static void | |
4039 | storetags (tags) | |
4040 | tree tags; | |
4041 | { | |
4042 | current_binding_level->tags = tags; | |
4043 | } | |
4044 | \f | |
4045 | /* Given NAME, an IDENTIFIER_NODE, | |
4046 | return the structure (or union or enum) definition for that name. | |
4047 | Searches binding levels from BINDING_LEVEL up to the global level. | |
4048 | If THISLEVEL_ONLY is nonzero, searches only the specified context | |
4049 | (but skips any tag-transparent contexts to find one that is | |
4050 | meaningful for tags). | |
4051 | FORM says which kind of type the caller wants; | |
4052 | it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE. | |
4053 | If the wrong kind of type is found, and it's not a template, an error is | |
4054 | reported. */ | |
4055 | ||
4056 | static tree | |
4057 | lookup_tag (form, name, binding_level, thislevel_only) | |
4058 | enum tree_code form; | |
8d08fdba | 4059 | tree name; |
cffa8729 | 4060 | struct binding_level *binding_level; |
8d08fdba MS |
4061 | int thislevel_only; |
4062 | { | |
4063 | register struct binding_level *level; | |
4064 | ||
4065 | for (level = binding_level; level; level = level->level_chain) | |
4066 | { | |
4067 | register tree tail; | |
4068 | if (ANON_AGGRNAME_P (name)) | |
4069 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
4070 | { | |
4071 | /* There's no need for error checking here, because | |
4072 | anon names are unique throughout the compilation. */ | |
4073 | if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name) | |
4074 | return TREE_VALUE (tail); | |
4075 | } | |
4076 | else | |
4077 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
4078 | { | |
5566b478 MS |
4079 | if (TREE_PURPOSE (tail) == name |
4080 | || TYPE_NESTED_NAME (TREE_VALUE (tail)) == name) | |
8d08fdba MS |
4081 | { |
4082 | enum tree_code code = TREE_CODE (TREE_VALUE (tail)); | |
4083 | /* Should tighten this up; it'll probably permit | |
4084 | UNION_TYPE and a struct template, for example. */ | |
4085 | if (code != form | |
5566b478 | 4086 | && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL)) |
8d08fdba MS |
4087 | { |
4088 | /* Definition isn't the kind we were looking for. */ | |
4089 | cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail), | |
4090 | form); | |
72b7eeff | 4091 | return NULL_TREE; |
8d08fdba MS |
4092 | } |
4093 | return TREE_VALUE (tail); | |
4094 | } | |
4095 | } | |
4096 | if (thislevel_only && ! level->tag_transparent) | |
5566b478 MS |
4097 | { |
4098 | if (level->pseudo_global) | |
4099 | { | |
4100 | tree t = IDENTIFIER_GLOBAL_VALUE (name); | |
4101 | if (t && TREE_CODE (t) == TEMPLATE_DECL | |
4102 | && TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL) | |
4103 | return TREE_TYPE (t); | |
4104 | } | |
4105 | return NULL_TREE; | |
4106 | } | |
8d08fdba MS |
4107 | if (current_class_type && level->level_chain == global_binding_level) |
4108 | { | |
4109 | /* Try looking in this class's tags before heading into | |
4110 | global binding level. */ | |
4111 | tree context = current_class_type; | |
4112 | while (context) | |
4113 | { | |
4114 | switch (TREE_CODE_CLASS (TREE_CODE (context))) | |
4115 | { | |
4116 | tree these_tags; | |
4117 | case 't': | |
4118 | these_tags = CLASSTYPE_TAGS (context); | |
4119 | if (ANON_AGGRNAME_P (name)) | |
4120 | while (these_tags) | |
4121 | { | |
4122 | if (TYPE_IDENTIFIER (TREE_VALUE (these_tags)) | |
4123 | == name) | |
4124 | return TREE_VALUE (tail); | |
4125 | these_tags = TREE_CHAIN (these_tags); | |
4126 | } | |
4127 | else | |
4128 | while (these_tags) | |
4129 | { | |
4130 | if (TREE_PURPOSE (these_tags) == name) | |
4131 | { | |
4132 | if (TREE_CODE (TREE_VALUE (these_tags)) != form) | |
4133 | { | |
4134 | cp_error ("`%#D' redeclared as %C in class scope", | |
4135 | TREE_VALUE (tail), form); | |
72b7eeff | 4136 | return NULL_TREE; |
8d08fdba MS |
4137 | } |
4138 | return TREE_VALUE (tail); | |
4139 | } | |
4140 | these_tags = TREE_CHAIN (these_tags); | |
4141 | } | |
4142 | /* If this type is not yet complete, then don't | |
4143 | look at its context. */ | |
4144 | if (TYPE_SIZE (context) == NULL_TREE) | |
4145 | goto no_context; | |
4146 | /* Go to next enclosing type, if any. */ | |
4147 | context = DECL_CONTEXT (TYPE_NAME (context)); | |
4148 | break; | |
4149 | case 'd': | |
4150 | context = DECL_CONTEXT (context); | |
4151 | break; | |
4152 | default: | |
4153 | my_friendly_abort (10); | |
4154 | } | |
4155 | continue; | |
4156 | no_context: | |
4157 | break; | |
4158 | } | |
4159 | } | |
4160 | } | |
4161 | return NULL_TREE; | |
4162 | } | |
4163 | ||
4164 | void | |
4165 | set_current_level_tags_transparency (tags_transparent) | |
4166 | int tags_transparent; | |
4167 | { | |
4168 | current_binding_level->tag_transparent = tags_transparent; | |
4169 | } | |
4170 | ||
4171 | /* Given a type, find the tag that was defined for it and return the tag name. | |
4172 | Otherwise return 0. However, the value can never be 0 | |
4173 | in the cases in which this is used. | |
4174 | ||
4175 | C++: If NAME is non-zero, this is the new name to install. This is | |
4176 | done when replacing anonymous tags with real tag names. */ | |
4177 | ||
4178 | static tree | |
4179 | lookup_tag_reverse (type, name) | |
4180 | tree type; | |
4181 | tree name; | |
4182 | { | |
4183 | register struct binding_level *level; | |
4184 | ||
4185 | for (level = current_binding_level; level; level = level->level_chain) | |
4186 | { | |
4187 | register tree tail; | |
4188 | for (tail = level->tags; tail; tail = TREE_CHAIN (tail)) | |
4189 | { | |
4190 | if (TREE_VALUE (tail) == type) | |
4191 | { | |
4192 | if (name) | |
4193 | TREE_PURPOSE (tail) = name; | |
4194 | return TREE_PURPOSE (tail); | |
4195 | } | |
4196 | } | |
4197 | } | |
4198 | return NULL_TREE; | |
4199 | } | |
4200 | ||
4201 | /* Given type TYPE which was not declared in C++ language context, | |
4202 | attempt to find a name by which it is referred. */ | |
4203 | tree | |
4204 | typedecl_for_tag (tag) | |
4205 | tree tag; | |
4206 | { | |
4207 | struct binding_level *b = current_binding_level; | |
4208 | ||
4209 | if (TREE_CODE (TYPE_NAME (tag)) == TYPE_DECL) | |
4210 | return TYPE_NAME (tag); | |
4211 | ||
4212 | while (b) | |
4213 | { | |
4214 | tree decls = b->names; | |
4215 | while (decls) | |
4216 | { | |
4217 | if (TREE_CODE (decls) == TYPE_DECL && TREE_TYPE (decls) == tag) | |
4218 | break; | |
4219 | decls = TREE_CHAIN (decls); | |
4220 | } | |
4221 | if (decls) | |
4222 | return decls; | |
4223 | b = b->level_chain; | |
4224 | } | |
4225 | return NULL_TREE; | |
4226 | } | |
4227 | \f | |
4228 | /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL). | |
4229 | Return the type value, or NULL_TREE if not found. */ | |
4230 | static tree | |
4231 | lookup_nested_type (type, context) | |
4232 | tree type; | |
4233 | tree context; | |
4234 | { | |
4235 | if (context == NULL_TREE) | |
4236 | return NULL_TREE; | |
4237 | while (context) | |
4238 | { | |
4239 | switch (TREE_CODE (context)) | |
4240 | { | |
4241 | case TYPE_DECL: | |
4242 | { | |
4243 | tree ctype = TREE_TYPE (context); | |
4244 | tree match = value_member (type, CLASSTYPE_TAGS (ctype)); | |
4245 | if (match) | |
4246 | return TREE_VALUE (match); | |
4247 | context = DECL_CONTEXT (context); | |
4248 | ||
4249 | /* When we have a nested class whose member functions have | |
4250 | local types (e.g., a set of enums), we'll arrive here | |
4251 | with the DECL_CONTEXT as the actual RECORD_TYPE node for | |
4252 | the enclosing class. Instead, we want to make sure we | |
4253 | come back in here with the TYPE_DECL, not the RECORD_TYPE. */ | |
4254 | if (context && TREE_CODE (context) == RECORD_TYPE) | |
4255 | context = TREE_CHAIN (context); | |
4256 | } | |
4257 | break; | |
4258 | case FUNCTION_DECL: | |
e1cd6e56 MS |
4259 | if (TYPE_NAME (type) && TYPE_IDENTIFIER (type)) |
4260 | return lookup_name (TYPE_IDENTIFIER (type), 1); | |
4261 | return NULL_TREE; | |
8d08fdba MS |
4262 | default: |
4263 | my_friendly_abort (12); | |
4264 | } | |
4265 | } | |
4266 | return NULL_TREE; | |
4267 | } | |
4268 | ||
a9aedbc2 MS |
4269 | /* Look up NAME in the NAMESPACE. */ |
4270 | tree | |
4271 | lookup_namespace_name (namespace, name) | |
4272 | tree namespace, name; | |
4273 | { | |
4274 | struct binding_level *b = (struct binding_level *)NAMESPACE_LEVEL (namespace); | |
4275 | tree x; | |
4276 | ||
4277 | for (x = NULL_TREE; b && !x; b = b->level_chain) | |
4278 | { | |
4279 | for (x = b->names; x; x = TREE_CHAIN (x)) | |
4280 | if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name) | |
4281 | break; | |
4282 | /* Must find directly in the namespace. */ | |
4283 | break; | |
4284 | } | |
4285 | return x; | |
4286 | } | |
4287 | ||
5566b478 MS |
4288 | tree |
4289 | make_typename_type (context, name) | |
4290 | tree context, name; | |
4291 | { | |
4292 | tree t, d, i; | |
4293 | ||
4294 | if (! current_template_parms | |
4295 | || ! uses_template_parms (context)) | |
4296 | { | |
4297 | t = lookup_field (context, name, 0, 1); | |
4298 | if (t == NULL_TREE) | |
4299 | { | |
4300 | cp_error_at ("no type matching `%#T' in `%#T'", name, context); | |
4301 | return error_mark_node; | |
4302 | } | |
4303 | return TREE_TYPE (t); | |
4304 | } | |
4305 | ||
4306 | if (current_template_parms) | |
4307 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
4308 | t = make_lang_type (TYPENAME_TYPE); | |
4309 | d = build_decl (TYPE_DECL, name, t); | |
4310 | i = make_anon_name (); | |
4311 | if (current_template_parms) | |
4312 | pop_obstacks (); | |
4313 | ||
4314 | TYPE_CONTEXT (t) = context; | |
4315 | TYPE_MAIN_DECL (TREE_TYPE (d)) = d; | |
4316 | DECL_CONTEXT (d) = context; | |
4317 | DECL_NESTED_TYPENAME (d) = i; | |
4318 | IDENTIFIER_LOCAL_VALUE (i) = d; | |
4319 | TREE_TYPE (i) = t; | |
4320 | ||
4321 | return t; | |
4322 | } | |
4323 | ||
8d08fdba MS |
4324 | /* Look up NAME in the current binding level and its superiors in the |
4325 | namespace of variables, functions and typedefs. Return a ..._DECL | |
4326 | node of some kind representing its definition if there is only one | |
4327 | such declaration, or return a TREE_LIST with all the overloaded | |
4328 | definitions if there are many, or return 0 if it is undefined. | |
4329 | ||
4330 | If PREFER_TYPE is > 0, we prefer TYPE_DECLs. | |
a28e3c7f | 4331 | If PREFER_TYPE is -2, we're being called from yylex(). (UGLY) |
51c184be | 4332 | Otherwise we prefer non-TYPE_DECLs. */ |
8d08fdba MS |
4333 | |
4334 | tree | |
700f8a87 | 4335 | lookup_name_real (name, prefer_type, nonclass) |
8d08fdba | 4336 | tree name; |
700f8a87 | 4337 | int prefer_type, nonclass; |
8d08fdba MS |
4338 | { |
4339 | register tree val; | |
a28e3c7f | 4340 | int yylex = 0; |
e1cd6e56 | 4341 | tree from_obj = NULL_TREE; |
8d08fdba | 4342 | |
a28e3c7f MS |
4343 | if (prefer_type == -2) |
4344 | { | |
4345 | extern int looking_for_typename; | |
e1cd6e56 | 4346 | tree type; |
a28e3c7f MS |
4347 | |
4348 | yylex = 1; | |
4349 | prefer_type = looking_for_typename; | |
e1cd6e56 MS |
4350 | |
4351 | if (got_scope) | |
4352 | type = got_scope; | |
dff6b454 | 4353 | else if (got_object != error_mark_node) |
e1cd6e56 | 4354 | type = got_object; |
a28e3c7f | 4355 | |
e1cd6e56 | 4356 | if (type) |
a28e3c7f | 4357 | { |
e1cd6e56 | 4358 | if (type == error_mark_node) |
f376e137 | 4359 | return error_mark_node; |
5566b478 MS |
4360 | |
4361 | type = complete_type (type); | |
4362 | ||
4363 | if (type == void_type_node) | |
a28e3c7f | 4364 | val = IDENTIFIER_GLOBAL_VALUE (name); |
a9aedbc2 MS |
4365 | else if (TREE_CODE (type) == NAMESPACE_DECL) |
4366 | { | |
4367 | val = lookup_namespace_name (type, name); | |
4368 | } | |
5566b478 MS |
4369 | else if (! IS_AGGR_TYPE (type) |
4370 | || TREE_CODE (type) == TEMPLATE_TYPE_PARM) | |
a28e3c7f MS |
4371 | /* Someone else will give an error about this if needed. */ |
4372 | val = NULL_TREE; | |
e1cd6e56 | 4373 | else if (TYPE_BEING_DEFINED (type)) |
700f8a87 MS |
4374 | { |
4375 | val = IDENTIFIER_CLASS_VALUE (name); | |
e1cd6e56 | 4376 | if (val && DECL_CONTEXT (val) != type) |
700f8a87 MS |
4377 | { |
4378 | struct binding_level *b = class_binding_level; | |
4379 | for (val = NULL_TREE; b; b = b->level_chain) | |
4380 | { | |
4381 | tree t = purpose_member (name, b->class_shadowed); | |
4382 | if (t && TREE_VALUE (t) | |
e1cd6e56 | 4383 | && DECL_CONTEXT (TREE_VALUE (t)) == type) |
700f8a87 MS |
4384 | { |
4385 | val = TREE_VALUE (t); | |
4386 | break; | |
4387 | } | |
4388 | } | |
4389 | } | |
5566b478 | 4390 | if (val == NULL_TREE) |
e1cd6e56 | 4391 | val = lookup_field (type, name, 0, 1); |
700f8a87 | 4392 | } |
e1cd6e56 | 4393 | else if (type == current_class_type) |
a28e3c7f | 4394 | val = IDENTIFIER_CLASS_VALUE (name); |
a28e3c7f | 4395 | else |
e1cd6e56 | 4396 | val = lookup_field (type, name, 0, prefer_type); |
a28e3c7f | 4397 | } |
e1cd6e56 MS |
4398 | else |
4399 | val = NULL_TREE; | |
4400 | ||
4401 | if (got_scope) | |
4402 | goto done; | |
4403 | ||
4404 | /* This special lookup only applies to types. */ | |
4405 | else if (got_object && val && TREE_CODE (val) == TYPE_DECL) | |
4406 | from_obj = val; | |
a28e3c7f MS |
4407 | } |
4408 | ||
8d08fdba MS |
4409 | if (current_binding_level != global_binding_level |
4410 | && IDENTIFIER_LOCAL_VALUE (name)) | |
4411 | val = IDENTIFIER_LOCAL_VALUE (name); | |
4412 | /* In C++ class fields are between local and global scope, | |
4413 | just before the global scope. */ | |
700f8a87 | 4414 | else if (current_class_type && ! nonclass) |
8d08fdba MS |
4415 | { |
4416 | val = IDENTIFIER_CLASS_VALUE (name); | |
5566b478 | 4417 | if (val == NULL_TREE && TYPE_BEING_DEFINED (current_class_type)) |
700f8a87 MS |
4418 | /* Try to find values from base classes if we are presently |
4419 | defining a type. We are presently only interested in | |
4420 | TYPE_DECLs. */ | |
8d2733ca | 4421 | val = lookup_field (current_class_type, name, 0, 1); |
8d08fdba MS |
4422 | |
4423 | /* yylex() calls this with -2, since we should never start digging for | |
4424 | the nested name at the point where we haven't even, for example, | |
4425 | created the COMPONENT_REF or anything like that. */ | |
4426 | if (val == NULL_TREE) | |
a28e3c7f | 4427 | val = lookup_nested_field (name, ! yylex); |
8d08fdba MS |
4428 | |
4429 | if (val == NULL_TREE) | |
4430 | val = IDENTIFIER_GLOBAL_VALUE (name); | |
4431 | } | |
4432 | else | |
4433 | val = IDENTIFIER_GLOBAL_VALUE (name); | |
4434 | ||
a28e3c7f | 4435 | done: |
8d08fdba MS |
4436 | if (val) |
4437 | { | |
e1cd6e56 | 4438 | if (from_obj && from_obj != val) |
5566b478 MS |
4439 | { |
4440 | cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%D')", | |
4441 | name, got_object, from_obj); | |
4442 | cp_pedwarn (" does not match lookup in the current scope (`%D')", | |
4443 | val); | |
4444 | } | |
e1cd6e56 | 4445 | |
a0a33927 MS |
4446 | if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template) |
4447 | || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0) | |
e1cd6e56 MS |
4448 | ; |
4449 | else if (IDENTIFIER_HAS_TYPE_VALUE (name)) | |
4450 | val = TYPE_NAME (IDENTIFIER_TYPE_VALUE (name)); | |
4451 | else if (TREE_TYPE (val) == error_mark_node) | |
4452 | val = error_mark_node; | |
8d08fdba | 4453 | } |
e1cd6e56 MS |
4454 | else if (from_obj) |
4455 | val = from_obj; | |
8d08fdba MS |
4456 | |
4457 | return val; | |
4458 | } | |
4459 | ||
700f8a87 MS |
4460 | tree |
4461 | lookup_name_nonclass (name) | |
4462 | tree name; | |
4463 | { | |
4464 | return lookup_name_real (name, 0, 1); | |
4465 | } | |
4466 | ||
4467 | tree | |
4468 | lookup_name (name, prefer_type) | |
4469 | tree name; | |
4470 | int prefer_type; | |
4471 | { | |
4472 | return lookup_name_real (name, prefer_type, 0); | |
4473 | } | |
4474 | ||
8d08fdba MS |
4475 | /* Similar to `lookup_name' but look only at current binding level. */ |
4476 | ||
4477 | tree | |
4478 | lookup_name_current_level (name) | |
4479 | tree name; | |
4480 | { | |
4481 | register tree t = NULL_TREE; | |
4482 | ||
4483 | if (current_binding_level == global_binding_level) | |
4484 | { | |
4485 | t = IDENTIFIER_GLOBAL_VALUE (name); | |
4486 | ||
4487 | /* extern "C" function() */ | |
4488 | if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST) | |
4489 | t = TREE_VALUE (t); | |
4490 | } | |
4491 | else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE) | |
4492 | { | |
a4443a08 MS |
4493 | struct binding_level *b = current_binding_level; |
4494 | while (1) | |
4495 | { | |
4496 | for (t = b->names; t; t = TREE_CHAIN (t)) | |
e1cd6e56 | 4497 | if (DECL_NAME (t) == name || DECL_ASSEMBLER_NAME (t) == name) |
a4443a08 MS |
4498 | goto out; |
4499 | if (b->keep == 2) | |
4500 | b = b->level_chain; | |
4501 | else | |
4502 | break; | |
4503 | } | |
4504 | out: | |
4505 | ; | |
8d08fdba MS |
4506 | } |
4507 | ||
4508 | return t; | |
4509 | } | |
4510 | \f | |
4511 | /* Arrange for the user to get a source line number, even when the | |
4512 | compiler is going down in flames, so that she at least has a | |
4513 | chance of working around problems in the compiler. We used to | |
4514 | call error(), but that let the segmentation fault continue | |
4515 | through; now, it's much more passive by asking them to send the | |
4516 | maintainers mail about the problem. */ | |
4517 | ||
4518 | static void | |
4519 | signal_catch (sig) | |
4520 | int sig; | |
4521 | { | |
4522 | signal (SIGSEGV, SIG_DFL); | |
4523 | #ifdef SIGIOT | |
4524 | signal (SIGIOT, SIG_DFL); | |
4525 | #endif | |
4526 | #ifdef SIGILL | |
4527 | signal (SIGILL, SIG_DFL); | |
4528 | #endif | |
4529 | #ifdef SIGABRT | |
4530 | signal (SIGABRT, SIG_DFL); | |
4531 | #endif | |
4532 | #ifdef SIGBUS | |
4533 | signal (SIGBUS, SIG_DFL); | |
4534 | #endif | |
4535 | my_friendly_abort (0); | |
4536 | } | |
4537 | ||
4538 | /* Array for holding types considered "built-in". These types | |
4539 | are output in the module in which `main' is defined. */ | |
4540 | static tree *builtin_type_tdescs_arr; | |
4541 | static int builtin_type_tdescs_len, builtin_type_tdescs_max; | |
4542 | ||
4543 | /* Push the declarations of builtin types into the namespace. | |
4544 | RID_INDEX, if < RID_MAX is the index of the builtin type | |
4545 | in the array RID_POINTERS. NAME is the name used when looking | |
4546 | up the builtin type. TYPE is the _TYPE node for the builtin type. */ | |
4547 | ||
4548 | static void | |
4549 | record_builtin_type (rid_index, name, type) | |
4550 | enum rid rid_index; | |
4551 | char *name; | |
4552 | tree type; | |
4553 | { | |
4554 | tree rname = NULL_TREE, tname = NULL_TREE; | |
4555 | tree tdecl; | |
4556 | ||
4557 | if ((int) rid_index < (int) RID_MAX) | |
4558 | rname = ridpointers[(int) rid_index]; | |
4559 | if (name) | |
4560 | tname = get_identifier (name); | |
4561 | ||
4562 | TYPE_BUILT_IN (type) = 1; | |
4563 | ||
4564 | if (tname) | |
4565 | { | |
8d08fdba | 4566 | tdecl = pushdecl (build_decl (TYPE_DECL, tname, type)); |
8d08fdba MS |
4567 | set_identifier_type_value (tname, NULL_TREE); |
4568 | if ((int) rid_index < (int) RID_MAX) | |
4569 | IDENTIFIER_GLOBAL_VALUE (tname) = tdecl; | |
4570 | } | |
4571 | if (rname != NULL_TREE) | |
4572 | { | |
4573 | if (tname != NULL_TREE) | |
4574 | { | |
4575 | set_identifier_type_value (rname, NULL_TREE); | |
4576 | IDENTIFIER_GLOBAL_VALUE (rname) = tdecl; | |
4577 | } | |
4578 | else | |
4579 | { | |
8d08fdba | 4580 | tdecl = pushdecl (build_decl (TYPE_DECL, rname, type)); |
8d08fdba MS |
4581 | set_identifier_type_value (rname, NULL_TREE); |
4582 | } | |
4583 | } | |
4584 | ||
db5ae43f | 4585 | if (flag_rtti) |
8d08fdba MS |
4586 | { |
4587 | if (builtin_type_tdescs_len+5 >= builtin_type_tdescs_max) | |
4588 | { | |
4589 | builtin_type_tdescs_max *= 2; | |
4590 | builtin_type_tdescs_arr | |
4591 | = (tree *)xrealloc (builtin_type_tdescs_arr, | |
4592 | builtin_type_tdescs_max * sizeof (tree)); | |
4593 | } | |
4594 | builtin_type_tdescs_arr[builtin_type_tdescs_len++] = type; | |
4595 | if (TREE_CODE (type) != POINTER_TYPE) | |
4596 | { | |
4597 | builtin_type_tdescs_arr[builtin_type_tdescs_len++] | |
4598 | = build_pointer_type (type); | |
4599 | builtin_type_tdescs_arr[builtin_type_tdescs_len++] | |
21474714 | 4600 | = build_pointer_type (build_type_variant (type, 1, 0)); |
8d08fdba MS |
4601 | } |
4602 | if (TREE_CODE (type) != VOID_TYPE) | |
4603 | { | |
4604 | builtin_type_tdescs_arr[builtin_type_tdescs_len++] | |
4605 | = build_reference_type (type); | |
4606 | builtin_type_tdescs_arr[builtin_type_tdescs_len++] | |
21474714 | 4607 | = build_reference_type (build_type_variant (type, 1, 0)); |
8d08fdba MS |
4608 | } |
4609 | } | |
4610 | } | |
4611 | ||
8d08fdba MS |
4612 | /* Push overloaded decl, in global scope, with one argument so it |
4613 | can be used as a callback from define_function. */ | |
4614 | static void | |
4615 | push_overloaded_decl_1 (x) | |
4616 | tree x; | |
4617 | { | |
4618 | push_overloaded_decl (x, 0); | |
4619 | } | |
4620 | ||
8ccc31eb MS |
4621 | #ifdef __GNUC__ |
4622 | __inline | |
4623 | #endif | |
4624 | tree auto_function (name, type, code) | |
4625 | tree name, type; | |
4626 | enum built_in_function code; | |
4627 | { | |
4628 | return define_function | |
4629 | (IDENTIFIER_POINTER (name), type, code, (void (*)())push_overloaded_decl_1, | |
4630 | IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type), | |
4631 | 0))); | |
4632 | } | |
4633 | ||
8d08fdba MS |
4634 | /* Create the predefined scalar types of C, |
4635 | and some nodes representing standard constants (0, 1, (void *)0). | |
4636 | Initialize the global binding level. | |
4637 | Make definitions for built-in primitive functions. */ | |
4638 | ||
4639 | void | |
4640 | init_decl_processing () | |
4641 | { | |
4642 | tree decl; | |
5566b478 | 4643 | register tree endlink, int_endlink, double_endlink; |
8d08fdba MS |
4644 | tree fields[20]; |
4645 | /* Either char* or void*. */ | |
4646 | tree traditional_ptr_type_node; | |
4647 | /* Data type of memcpy. */ | |
cffa8729 | 4648 | tree memcpy_ftype, strlen_ftype; |
8d08fdba MS |
4649 | int wchar_type_size; |
4650 | tree temp; | |
4651 | tree array_domain_type; | |
e1cd6e56 | 4652 | extern int flag_strict_prototype; |
5566b478 MS |
4653 | tree vb_off_identifier; |
4654 | /* Function type `char *(char *, char *)' and similar ones */ | |
4655 | tree string_ftype_ptr_ptr, int_ftype_string_string; | |
8d08fdba MS |
4656 | |
4657 | /* Have to make these distinct before we try using them. */ | |
4658 | lang_name_cplusplus = get_identifier ("C++"); | |
4659 | lang_name_c = get_identifier ("C"); | |
4660 | ||
e1cd6e56 MS |
4661 | if (flag_strict_prototype == 2) |
4662 | { | |
4663 | if (pedantic) | |
4664 | strict_prototypes_lang_c = strict_prototypes_lang_cplusplus; | |
4665 | } | |
4666 | else | |
4667 | strict_prototypes_lang_c = flag_strict_prototype; | |
8926095f | 4668 | |
8d08fdba MS |
4669 | /* Initially, C. */ |
4670 | current_lang_name = lang_name_c; | |
4671 | ||
4672 | current_function_decl = NULL_TREE; | |
4673 | named_labels = NULL_TREE; | |
4674 | named_label_uses = NULL_TREE; | |
4675 | current_binding_level = NULL_BINDING_LEVEL; | |
4676 | free_binding_level = NULL_BINDING_LEVEL; | |
4677 | ||
4678 | /* Because most segmentation signals can be traced back into user | |
4679 | code, catch them and at least give the user a chance of working | |
4680 | around compiler bugs. */ | |
4681 | signal (SIGSEGV, signal_catch); | |
4682 | ||
4683 | /* We will also catch aborts in the back-end through signal_catch and | |
4684 | give the user a chance to see where the error might be, and to defeat | |
4685 | aborts in the back-end when there have been errors previously in their | |
4686 | code. */ | |
4687 | #ifdef SIGIOT | |
4688 | signal (SIGIOT, signal_catch); | |
4689 | #endif | |
4690 | #ifdef SIGILL | |
4691 | signal (SIGILL, signal_catch); | |
4692 | #endif | |
4693 | #ifdef SIGABRT | |
4694 | signal (SIGABRT, signal_catch); | |
4695 | #endif | |
4696 | #ifdef SIGBUS | |
4697 | signal (SIGBUS, signal_catch); | |
4698 | #endif | |
4699 | ||
4700 | gcc_obstack_init (&decl_obstack); | |
db5ae43f | 4701 | if (flag_rtti) |
8d08fdba MS |
4702 | { |
4703 | builtin_type_tdescs_max = 100; | |
4704 | builtin_type_tdescs_arr = (tree *)xmalloc (100 * sizeof (tree)); | |
4705 | } | |
4706 | ||
4707 | /* Must lay these out before anything else gets laid out. */ | |
4708 | error_mark_node = make_node (ERROR_MARK); | |
4709 | TREE_PERMANENT (error_mark_node) = 1; | |
4710 | TREE_TYPE (error_mark_node) = error_mark_node; | |
4711 | error_mark_list = build_tree_list (error_mark_node, error_mark_node); | |
4712 | TREE_TYPE (error_mark_list) = error_mark_node; | |
4713 | ||
a28e3c7f MS |
4714 | /* Make the binding_level structure for global names. */ |
4715 | pushlevel (0); | |
8d08fdba MS |
4716 | global_binding_level = current_binding_level; |
4717 | ||
4718 | this_identifier = get_identifier (THIS_NAME); | |
4719 | in_charge_identifier = get_identifier (IN_CHARGE_NAME); | |
4720 | pfn_identifier = get_identifier (VTABLE_PFN_NAME); | |
4721 | index_identifier = get_identifier (VTABLE_INDEX_NAME); | |
4722 | delta_identifier = get_identifier (VTABLE_DELTA_NAME); | |
4723 | delta2_identifier = get_identifier (VTABLE_DELTA2_NAME); | |
4724 | pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2"); | |
dff6b454 RK |
4725 | if (flag_handle_signatures) |
4726 | { | |
4727 | tag_identifier = get_identifier (SIGTABLE_TAG_NAME); | |
9dd70aa4 GB |
4728 | vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME); |
4729 | vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME); | |
dff6b454 | 4730 | } |
8d08fdba MS |
4731 | |
4732 | /* Define `int' and `char' first so that dbx will output them first. */ | |
4733 | ||
4734 | integer_type_node = make_signed_type (INT_TYPE_SIZE); | |
4735 | record_builtin_type (RID_INT, NULL_PTR, integer_type_node); | |
4736 | ||
4737 | /* Define `char', which is like either `signed char' or `unsigned char' | |
4738 | but not the same as either. */ | |
4739 | ||
4740 | char_type_node = | |
4741 | (flag_signed_char | |
4742 | ? make_signed_type (CHAR_TYPE_SIZE) | |
4743 | : make_unsigned_type (CHAR_TYPE_SIZE)); | |
4744 | record_builtin_type (RID_CHAR, "char", char_type_node); | |
4745 | ||
4746 | long_integer_type_node = make_signed_type (LONG_TYPE_SIZE); | |
4747 | record_builtin_type (RID_LONG, "long int", long_integer_type_node); | |
4748 | ||
4749 | unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE); | |
4750 | record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node); | |
4751 | ||
4752 | long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE); | |
4753 | record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node); | |
4754 | record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node); | |
4755 | ||
4756 | long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE); | |
4757 | record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node); | |
4758 | ||
4759 | long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE); | |
4760 | record_builtin_type (RID_MAX, "long long unsigned int", | |
4761 | long_long_unsigned_type_node); | |
4762 | record_builtin_type (RID_MAX, "long long unsigned", | |
4763 | long_long_unsigned_type_node); | |
4764 | ||
4765 | /* `unsigned long' is the standard type for sizeof. | |
4766 | Traditionally, use a signed type. | |
4767 | Note that stddef.h uses `unsigned long', | |
4768 | and this must agree, even of long and int are the same size. */ | |
4769 | sizetype | |
4770 | = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE))); | |
4771 | if (flag_traditional && TREE_UNSIGNED (sizetype)) | |
4772 | sizetype = signed_type (sizetype); | |
4773 | ||
4774 | ptrdiff_type_node | |
4775 | = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE))); | |
4776 | ||
4777 | TREE_TYPE (TYPE_SIZE (integer_type_node)) = sizetype; | |
4778 | TREE_TYPE (TYPE_SIZE (char_type_node)) = sizetype; | |
4779 | TREE_TYPE (TYPE_SIZE (unsigned_type_node)) = sizetype; | |
4780 | TREE_TYPE (TYPE_SIZE (long_unsigned_type_node)) = sizetype; | |
4781 | TREE_TYPE (TYPE_SIZE (long_integer_type_node)) = sizetype; | |
4782 | TREE_TYPE (TYPE_SIZE (long_long_integer_type_node)) = sizetype; | |
4783 | TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node)) = sizetype; | |
4784 | ||
4785 | short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE); | |
4786 | record_builtin_type (RID_SHORT, "short int", short_integer_type_node); | |
4787 | short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE); | |
4788 | record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node); | |
4789 | record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node); | |
4790 | ||
4791 | /* Define both `signed char' and `unsigned char'. */ | |
4792 | signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE); | |
4793 | record_builtin_type (RID_MAX, "signed char", signed_char_type_node); | |
4794 | unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE); | |
4795 | record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node); | |
4796 | ||
4797 | /* These are types that type_for_size and type_for_mode use. */ | |
4798 | intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode)); | |
4799 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node)); | |
4800 | intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode)); | |
4801 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node)); | |
4802 | intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode)); | |
4803 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node)); | |
4804 | intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode)); | |
4805 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node)); | |
4806 | unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode)); | |
4807 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node)); | |
4808 | unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode)); | |
4809 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node)); | |
4810 | unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode)); | |
4811 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node)); | |
4812 | unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode)); | |
4813 | pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node)); | |
4814 | ||
4815 | float_type_node = make_node (REAL_TYPE); | |
4816 | TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE; | |
4817 | record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node); | |
4818 | layout_type (float_type_node); | |
4819 | ||
4820 | double_type_node = make_node (REAL_TYPE); | |
4821 | if (flag_short_double) | |
4822 | TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE; | |
4823 | else | |
4824 | TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE; | |
4825 | record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node); | |
4826 | layout_type (double_type_node); | |
4827 | ||
4828 | long_double_type_node = make_node (REAL_TYPE); | |
4829 | TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE; | |
4830 | record_builtin_type (RID_MAX, "long double", long_double_type_node); | |
4831 | layout_type (long_double_type_node); | |
4832 | ||
4833 | integer_zero_node = build_int_2 (0, 0); | |
4834 | TREE_TYPE (integer_zero_node) = integer_type_node; | |
4835 | integer_one_node = build_int_2 (1, 0); | |
4836 | TREE_TYPE (integer_one_node) = integer_type_node; | |
4837 | integer_two_node = build_int_2 (2, 0); | |
4838 | TREE_TYPE (integer_two_node) = integer_type_node; | |
4839 | integer_three_node = build_int_2 (3, 0); | |
4840 | TREE_TYPE (integer_three_node) = integer_type_node; | |
8d08fdba | 4841 | |
255512c1 JM |
4842 | boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE); |
4843 | TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE); | |
4844 | record_builtin_type (RID_BOOL, "bool", boolean_type_node); | |
4845 | boolean_false_node = build_int_2 (0, 0); | |
4846 | TREE_TYPE (boolean_false_node) = boolean_type_node; | |
4847 | boolean_true_node = build_int_2 (1, 0); | |
4848 | TREE_TYPE (boolean_true_node) = boolean_type_node; | |
2986ae00 | 4849 | |
8d08fdba MS |
4850 | /* These are needed by stor-layout.c. */ |
4851 | size_zero_node = size_int (0); | |
4852 | size_one_node = size_int (1); | |
4853 | ||
4854 | void_type_node = make_node (VOID_TYPE); | |
4855 | record_builtin_type (RID_VOID, NULL_PTR, void_type_node); | |
4856 | layout_type (void_type_node); /* Uses integer_zero_node. */ | |
4857 | void_list_node = build_tree_list (NULL_TREE, void_type_node); | |
4858 | TREE_PARMLIST (void_list_node) = 1; | |
4859 | ||
4860 | null_pointer_node = build_int_2 (0, 0); | |
4861 | TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node); | |
4862 | layout_type (TREE_TYPE (null_pointer_node)); | |
4863 | ||
4864 | /* Used for expressions that do nothing, but are not errors. */ | |
4865 | void_zero_node = build_int_2 (0, 0); | |
4866 | TREE_TYPE (void_zero_node) = void_type_node; | |
4867 | ||
4868 | string_type_node = build_pointer_type (char_type_node); | |
a28e3c7f MS |
4869 | const_string_type_node = |
4870 | build_pointer_type (build_type_variant (char_type_node, 1, 0)); | |
8d08fdba MS |
4871 | record_builtin_type (RID_MAX, NULL_PTR, string_type_node); |
4872 | ||
4873 | /* Make a type to be the domain of a few array types | |
4874 | whose domains don't really matter. | |
4875 | 200 is small enough that it always fits in size_t | |
4876 | and large enough that it can hold most function names for the | |
4877 | initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */ | |
4878 | array_domain_type = build_index_type (build_int_2 (200, 0)); | |
4879 | ||
4880 | /* make a type for arrays of characters. | |
4881 | With luck nothing will ever really depend on the length of this | |
4882 | array type. */ | |
4883 | char_array_type_node | |
4884 | = build_array_type (char_type_node, array_domain_type); | |
4885 | /* Likewise for arrays of ints. */ | |
4886 | int_array_type_node | |
4887 | = build_array_type (integer_type_node, array_domain_type); | |
4888 | ||
4889 | /* This is just some anonymous class type. Nobody should ever | |
4890 | need to look inside this envelope. */ | |
4891 | class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE)); | |
4892 | ||
4893 | default_function_type | |
4894 | = build_function_type (integer_type_node, NULL_TREE); | |
8d08fdba MS |
4895 | |
4896 | ptr_type_node = build_pointer_type (void_type_node); | |
a28e3c7f MS |
4897 | const_ptr_type_node = |
4898 | build_pointer_type (build_type_variant (void_type_node, 1, 0)); | |
8d08fdba MS |
4899 | record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node); |
4900 | endlink = void_list_node; | |
4901 | int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink); | |
4902 | double_endlink = tree_cons (NULL_TREE, double_type_node, endlink); | |
8d08fdba | 4903 | |
cffa8729 MS |
4904 | float_ftype_float |
4905 | = build_function_type (float_type_node, | |
4906 | tree_cons (NULL_TREE, float_type_node, endlink)); | |
4907 | ||
8d08fdba MS |
4908 | double_ftype_double |
4909 | = build_function_type (double_type_node, double_endlink); | |
4910 | ||
cffa8729 MS |
4911 | ldouble_ftype_ldouble |
4912 | = build_function_type (long_double_type_node, | |
4913 | tree_cons (NULL_TREE, long_double_type_node, | |
4914 | endlink)); | |
4915 | ||
8d08fdba MS |
4916 | double_ftype_double_double |
4917 | = build_function_type (double_type_node, | |
a28e3c7f MS |
4918 | tree_cons (NULL_TREE, double_type_node, |
4919 | double_endlink)); | |
8d08fdba MS |
4920 | |
4921 | int_ftype_int | |
4922 | = build_function_type (integer_type_node, int_endlink); | |
4923 | ||
4924 | long_ftype_long | |
4925 | = build_function_type (long_integer_type_node, | |
a28e3c7f MS |
4926 | tree_cons (NULL_TREE, long_integer_type_node, |
4927 | endlink)); | |
8d08fdba | 4928 | |
8d08fdba MS |
4929 | int_ftype_cptr_cptr_sizet |
4930 | = build_function_type (integer_type_node, | |
4931 | tree_cons (NULL_TREE, const_ptr_type_node, | |
4932 | tree_cons (NULL_TREE, const_ptr_type_node, | |
4933 | tree_cons (NULL_TREE, | |
4934 | sizetype, | |
4935 | endlink)))); | |
4936 | ||
8d08fdba MS |
4937 | string_ftype_ptr_ptr /* strcpy prototype */ |
4938 | = build_function_type (string_type_node, | |
4939 | tree_cons (NULL_TREE, string_type_node, | |
4940 | tree_cons (NULL_TREE, | |
4941 | const_string_type_node, | |
4942 | endlink))); | |
4943 | ||
8d08fdba MS |
4944 | int_ftype_string_string /* strcmp prototype */ |
4945 | = build_function_type (integer_type_node, | |
4946 | tree_cons (NULL_TREE, const_string_type_node, | |
4947 | tree_cons (NULL_TREE, | |
4948 | const_string_type_node, | |
4949 | endlink))); | |
4950 | ||
cffa8729 | 4951 | strlen_ftype /* strlen prototype */ |
8d08fdba MS |
4952 | = build_function_type (sizetype, |
4953 | tree_cons (NULL_TREE, const_string_type_node, | |
4954 | endlink)); | |
4955 | ||
4956 | traditional_ptr_type_node | |
4957 | = (flag_traditional ? string_type_node : ptr_type_node); | |
4958 | ||
4959 | memcpy_ftype /* memcpy prototype */ | |
4960 | = build_function_type (traditional_ptr_type_node, | |
4961 | tree_cons (NULL_TREE, ptr_type_node, | |
4962 | tree_cons (NULL_TREE, const_ptr_type_node, | |
4963 | tree_cons (NULL_TREE, | |
4964 | sizetype, | |
4965 | endlink)))); | |
4966 | ||
4967 | if (flag_huge_objects) | |
4968 | delta_type_node = long_integer_type_node; | |
4969 | else | |
4970 | delta_type_node = short_integer_type_node; | |
4971 | ||
4972 | builtin_function ("__builtin_constant_p", int_ftype_int, | |
4973 | BUILT_IN_CONSTANT_P, NULL_PTR); | |
4974 | ||
8d2733ca | 4975 | builtin_return_address_fndecl = |
8926095f MS |
4976 | builtin_function ("__builtin_return_address", |
4977 | build_function_type (ptr_type_node, | |
4978 | tree_cons (NULL_TREE, | |
4979 | unsigned_type_node, | |
4980 | endlink)), | |
4981 | BUILT_IN_RETURN_ADDRESS, NULL_PTR); | |
4982 | ||
4983 | builtin_function ("__builtin_frame_address", | |
4984 | build_function_type (ptr_type_node, | |
4985 | tree_cons (NULL_TREE, | |
4986 | unsigned_type_node, | |
4987 | endlink)), | |
4988 | BUILT_IN_FRAME_ADDRESS, NULL_PTR); | |
4989 | ||
8d08fdba MS |
4990 | builtin_function ("__builtin_alloca", |
4991 | build_function_type (ptr_type_node, | |
4992 | tree_cons (NULL_TREE, | |
4993 | sizetype, | |
4994 | endlink)), | |
4995 | BUILT_IN_ALLOCA, "alloca"); | |
cffa8729 | 4996 | builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR); |
00595019 MS |
4997 | /* Define alloca, ffs as builtins. |
4998 | Declare _exit just to mark it as volatile. */ | |
4999 | if (! flag_no_builtin && !flag_no_nonansi_builtin) | |
5000 | { | |
00595019 MS |
5001 | temp = builtin_function ("alloca", |
5002 | build_function_type (ptr_type_node, | |
5003 | tree_cons (NULL_TREE, | |
5004 | sizetype, | |
5005 | endlink)), | |
5006 | BUILT_IN_ALLOCA, NULL_PTR); | |
5007 | /* Suppress error if redefined as a non-function. */ | |
5008 | DECL_BUILT_IN_NONANSI (temp) = 1; | |
00595019 MS |
5009 | temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR); |
5010 | /* Suppress error if redefined as a non-function. */ | |
5011 | DECL_BUILT_IN_NONANSI (temp) = 1; | |
5012 | temp = builtin_function ("_exit", build_function_type (void_type_node, | |
5013 | int_endlink), | |
5014 | NOT_BUILT_IN, NULL_PTR); | |
5015 | TREE_THIS_VOLATILE (temp) = 1; | |
5016 | TREE_SIDE_EFFECTS (temp) = 1; | |
5017 | /* Suppress error if redefined as a non-function. */ | |
5018 | DECL_BUILT_IN_NONANSI (temp) = 1; | |
5019 | } | |
8d08fdba | 5020 | |
cffa8729 MS |
5021 | builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR); |
5022 | builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS, | |
5023 | NULL_PTR); | |
5024 | builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS, | |
5025 | NULL_PTR); | |
5026 | builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS, | |
5027 | NULL_PTR); | |
8d08fdba MS |
5028 | builtin_function ("__builtin_labs", long_ftype_long, |
5029 | BUILT_IN_LABS, NULL_PTR); | |
8d08fdba MS |
5030 | builtin_function ("__builtin_saveregs", |
5031 | build_function_type (ptr_type_node, NULL_TREE), | |
5032 | BUILT_IN_SAVEREGS, NULL_PTR); | |
8d08fdba MS |
5033 | builtin_function ("__builtin_classify_type", default_function_type, |
5034 | BUILT_IN_CLASSIFY_TYPE, NULL_PTR); | |
5035 | builtin_function ("__builtin_next_arg", | |
8d0aed47 | 5036 | build_function_type (ptr_type_node, NULL_TREE), |
8d08fdba MS |
5037 | BUILT_IN_NEXT_ARG, NULL_PTR); |
5038 | builtin_function ("__builtin_args_info", | |
5039 | build_function_type (integer_type_node, | |
5040 | tree_cons (NULL_TREE, | |
5041 | integer_type_node, | |
5042 | endlink)), | |
5043 | BUILT_IN_ARGS_INFO, NULL_PTR); | |
5044 | ||
5045 | /* Untyped call and return. */ | |
5046 | builtin_function ("__builtin_apply_args", | |
5047 | build_function_type (ptr_type_node, NULL_TREE), | |
5048 | BUILT_IN_APPLY_ARGS, NULL_PTR); | |
5049 | ||
5050 | temp = tree_cons (NULL_TREE, | |
5051 | build_pointer_type (build_function_type (void_type_node, | |
5052 | NULL_TREE)), | |
5053 | tree_cons (NULL_TREE, | |
5054 | ptr_type_node, | |
5055 | tree_cons (NULL_TREE, | |
5056 | sizetype, | |
5057 | endlink))); | |
5058 | builtin_function ("__builtin_apply", | |
5059 | build_function_type (ptr_type_node, temp), | |
5060 | BUILT_IN_APPLY, NULL_PTR); | |
5061 | builtin_function ("__builtin_return", | |
5062 | build_function_type (void_type_node, | |
5063 | tree_cons (NULL_TREE, | |
5064 | ptr_type_node, | |
5065 | endlink)), | |
5066 | BUILT_IN_RETURN, NULL_PTR); | |
5067 | ||
5068 | /* Currently under experimentation. */ | |
5069 | builtin_function ("__builtin_memcpy", memcpy_ftype, | |
5070 | BUILT_IN_MEMCPY, "memcpy"); | |
5071 | builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet, | |
5072 | BUILT_IN_MEMCMP, "memcmp"); | |
5073 | builtin_function ("__builtin_strcmp", int_ftype_string_string, | |
5074 | BUILT_IN_STRCMP, "strcmp"); | |
5075 | builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr, | |
5076 | BUILT_IN_STRCPY, "strcpy"); | |
cffa8729 | 5077 | builtin_function ("__builtin_strlen", strlen_ftype, |
8d08fdba | 5078 | BUILT_IN_STRLEN, "strlen"); |
cffa8729 MS |
5079 | builtin_function ("__builtin_sqrtf", float_ftype_float, |
5080 | BUILT_IN_FSQRT, "sqrtf"); | |
5081 | builtin_function ("__builtin_fsqrt", double_ftype_double, | |
5082 | BUILT_IN_FSQRT, NULL_PTR); | |
5083 | builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble, | |
5084 | BUILT_IN_FSQRT, "sqrtl"); | |
5085 | builtin_function ("__builtin_sinf", float_ftype_float, | |
5086 | BUILT_IN_SIN, "sinf"); | |
5087 | builtin_function ("__builtin_sin", double_ftype_double, | |
5088 | BUILT_IN_SIN, "sin"); | |
5089 | builtin_function ("__builtin_sinl", ldouble_ftype_ldouble, | |
5090 | BUILT_IN_SIN, "sinl"); | |
5091 | builtin_function ("__builtin_cosf", float_ftype_float, | |
5092 | BUILT_IN_COS, "cosf"); | |
5093 | builtin_function ("__builtin_cos", double_ftype_double, | |
5094 | BUILT_IN_COS, "cos"); | |
5095 | builtin_function ("__builtin_cosl", ldouble_ftype_ldouble, | |
5096 | BUILT_IN_COS, "cosl"); | |
8d08fdba MS |
5097 | |
5098 | if (!flag_no_builtin) | |
5099 | { | |
5100 | #if 0 /* These do not work well with libg++. */ | |
5101 | builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR); | |
5102 | builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR); | |
5103 | builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR); | |
5104 | #endif | |
cffa8729 MS |
5105 | builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR); |
5106 | builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS, | |
5107 | NULL_PTR); | |
8d08fdba MS |
5108 | builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR); |
5109 | builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP, | |
5110 | NULL_PTR); | |
cffa8729 MS |
5111 | builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP, |
5112 | NULL_PTR); | |
a28e3c7f MS |
5113 | builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY, |
5114 | NULL_PTR); | |
cffa8729 MS |
5115 | builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR); |
5116 | builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR); | |
5117 | builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR); | |
5118 | builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT, | |
5119 | NULL_PTR); | |
5120 | builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR); | |
8d08fdba | 5121 | builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR); |
cffa8729 MS |
5122 | builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR); |
5123 | builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR); | |
8d08fdba | 5124 | builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR); |
cffa8729 | 5125 | builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR); |
00595019 MS |
5126 | |
5127 | /* Declare these functions volatile | |
5128 | to avoid spurious "control drops through" warnings. */ | |
5129 | temp = builtin_function ("abort", | |
5130 | build_function_type (void_type_node, endlink), | |
5131 | NOT_BUILT_IN, NULL_PTR); | |
5132 | TREE_THIS_VOLATILE (temp) = 1; | |
5133 | TREE_SIDE_EFFECTS (temp) = 1; | |
5134 | /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on | |
5135 | them... */ | |
5136 | DECL_BUILT_IN_NONANSI (temp) = 1; | |
5137 | temp = builtin_function ("exit", build_function_type (void_type_node, | |
5138 | int_endlink), | |
5139 | NOT_BUILT_IN, NULL_PTR); | |
5140 | TREE_THIS_VOLATILE (temp) = 1; | |
5141 | TREE_SIDE_EFFECTS (temp) = 1; | |
5142 | DECL_BUILT_IN_NONANSI (temp) = 1; | |
8d08fdba MS |
5143 | } |
5144 | ||
5145 | #if 0 | |
5146 | /* Support for these has not been written in either expand_builtin | |
5147 | or build_function_call. */ | |
72b7eeff MS |
5148 | builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR); |
5149 | builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR); | |
a28e3c7f | 5150 | builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR, |
72b7eeff | 5151 | NULL_PTR); |
cffa8729 MS |
5152 | builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL, |
5153 | NULL_PTR); | |
a28e3c7f | 5154 | builtin_function ("__builtin_fmod", double_ftype_double_double, |
72b7eeff | 5155 | BUILT_IN_FMOD, NULL_PTR); |
a28e3c7f | 5156 | builtin_function ("__builtin_frem", double_ftype_double_double, |
72b7eeff | 5157 | BUILT_IN_FREM, NULL_PTR); |
cffa8729 MS |
5158 | builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int, |
5159 | BUILT_IN_MEMSET, NULL_PTR); | |
a28e3c7f | 5160 | builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP, |
72b7eeff | 5161 | NULL_PTR); |
a28e3c7f | 5162 | builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN, |
72b7eeff | 5163 | NULL_PTR); |
8d08fdba MS |
5164 | #endif |
5165 | ||
5166 | /* C++ extensions */ | |
5167 | ||
5168 | unknown_type_node = make_node (UNKNOWN_TYPE); | |
8d08fdba MS |
5169 | decl = pushdecl (build_decl (TYPE_DECL, get_identifier ("unknown type"), |
5170 | unknown_type_node)); | |
5171 | /* Make sure the "unknown type" typedecl gets ignored for debug info. */ | |
5172 | DECL_IGNORED_P (decl) = 1; | |
39211cd5 | 5173 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; |
8d08fdba MS |
5174 | TYPE_SIZE (unknown_type_node) = TYPE_SIZE (void_type_node); |
5175 | TYPE_ALIGN (unknown_type_node) = 1; | |
5176 | TYPE_MODE (unknown_type_node) = TYPE_MODE (void_type_node); | |
5177 | /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */ | |
5178 | TREE_TYPE (unknown_type_node) = unknown_type_node; | |
a28e3c7f | 5179 | /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same result. */ |
8d08fdba MS |
5180 | TYPE_POINTER_TO (unknown_type_node) = unknown_type_node; |
5181 | TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node; | |
5182 | ||
5183 | /* This is for handling opaque types in signatures. */ | |
5184 | opaque_type_node = copy_node (ptr_type_node); | |
5185 | TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node; | |
5186 | record_builtin_type (RID_MAX, 0, opaque_type_node); | |
5187 | ||
5188 | /* This is special for C++ so functions can be overloaded. */ | |
5189 | wchar_type_node | |
5190 | = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE))); | |
5191 | wchar_type_size = TYPE_PRECISION (wchar_type_node); | |
5192 | signed_wchar_type_node = make_signed_type (wchar_type_size); | |
5193 | unsigned_wchar_type_node = make_unsigned_type (wchar_type_size); | |
5194 | wchar_type_node | |
5195 | = TREE_UNSIGNED (wchar_type_node) | |
5196 | ? unsigned_wchar_type_node | |
5197 | : signed_wchar_type_node; | |
5198 | record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node); | |
5199 | ||
f376e137 MS |
5200 | /* Artificial declaration of wchar_t -- can be bashed */ |
5201 | wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"), | |
5202 | wchar_type_node); | |
5203 | pushdecl (wchar_decl_node); | |
5204 | ||
8d08fdba MS |
5205 | /* This is for wide string constants. */ |
5206 | wchar_array_type_node | |
5207 | = build_array_type (wchar_type_node, array_domain_type); | |
5208 | ||
8926095f | 5209 | if (flag_vtable_thunks) |
700f8a87 MS |
5210 | { |
5211 | /* Make sure we get a unique function type, so we can give | |
5212 | its pointer type a name. (This wins for gdb.) */ | |
5213 | tree vfunc_type = make_node (FUNCTION_TYPE); | |
5214 | TREE_TYPE (vfunc_type) = integer_type_node; | |
5215 | TYPE_ARG_TYPES (vfunc_type) = NULL_TREE; | |
5216 | layout_type (vfunc_type); | |
5217 | ||
5218 | vtable_entry_type = build_pointer_type (vfunc_type); | |
5219 | } | |
8926095f | 5220 | else |
700f8a87 MS |
5221 | { |
5222 | vtable_entry_type = make_lang_type (RECORD_TYPE); | |
5223 | fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier, | |
5224 | delta_type_node); | |
5225 | fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier, | |
5226 | delta_type_node); | |
5227 | fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier, | |
5228 | ptr_type_node); | |
5229 | finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2, | |
5230 | double_type_node); | |
5231 | ||
5232 | /* Make this part of an invisible union. */ | |
5233 | fields[3] = copy_node (fields[2]); | |
5234 | TREE_TYPE (fields[3]) = delta_type_node; | |
5235 | DECL_NAME (fields[3]) = delta2_identifier; | |
5236 | DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node); | |
5237 | DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node); | |
5238 | TREE_UNSIGNED (fields[3]) = 0; | |
5239 | TREE_CHAIN (fields[2]) = fields[3]; | |
5240 | vtable_entry_type = build_type_variant (vtable_entry_type, 1, 0); | |
5241 | } | |
5242 | record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type); | |
8d08fdba | 5243 | |
8d08fdba MS |
5244 | vtbl_type_node |
5245 | = build_array_type (vtable_entry_type, NULL_TREE); | |
5246 | layout_type (vtbl_type_node); | |
f376e137 | 5247 | vtbl_type_node = cp_build_type_variant (vtbl_type_node, 1, 0); |
8d08fdba MS |
5248 | record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node); |
5249 | ||
5250 | /* Simplify life by making a "sigtable_entry_type". Give its | |
5251 | fields names so that the debugger can use them. */ | |
5252 | ||
5253 | if (flag_handle_signatures) | |
5254 | { | |
5255 | sigtable_entry_type = make_lang_type (RECORD_TYPE); | |
dff6b454 RK |
5256 | fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier, |
5257 | delta_type_node); | |
9dd70aa4 | 5258 | fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier, |
dff6b454 | 5259 | delta_type_node); |
9dd70aa4 | 5260 | fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier, |
dff6b454 RK |
5261 | delta_type_node); |
5262 | fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier, | |
5263 | delta_type_node); | |
9dd70aa4 GB |
5264 | fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier, |
5265 | ptr_type_node); | |
5266 | ||
5267 | /* Set the alignment to the max of the alignment of ptr_type_node and | |
5268 | delta_type_node. Double alignment wastes a word on the Sparc. */ | |
5269 | finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4, | |
5270 | (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node)) | |
5271 | ? ptr_type_node | |
5272 | : delta_type_node); | |
dff6b454 RK |
5273 | |
5274 | /* Make this part of an invisible union. */ | |
9dd70aa4 GB |
5275 | fields[5] = copy_node (fields[4]); |
5276 | TREE_TYPE (fields[5]) = delta_type_node; | |
5277 | DECL_NAME (fields[5]) = vt_off_identifier; | |
5278 | DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node); | |
5279 | DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node); | |
5280 | TREE_UNSIGNED (fields[5]) = 0; | |
5281 | TREE_CHAIN (fields[4]) = fields[5]; | |
dff6b454 | 5282 | |
8d08fdba MS |
5283 | sigtable_entry_type = build_type_variant (sigtable_entry_type, 1, 0); |
5284 | record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type); | |
5285 | } | |
5286 | ||
db5ae43f MS |
5287 | #if 0 |
5288 | if (flag_rtti) | |
8d08fdba MS |
5289 | { |
5290 | /* Must build __t_desc type. Currently, type descriptors look like this: | |
5291 | ||
5292 | struct __t_desc | |
5293 | { | |
5294 | const char *name; | |
5295 | int size; | |
5296 | int bits; | |
5297 | struct __t_desc *points_to; | |
5298 | int ivars_count, meths_count; | |
5299 | struct __i_desc *ivars[]; | |
5300 | struct __m_desc *meths[]; | |
5301 | struct __t_desc *parents[]; | |
5302 | struct __t_desc *vbases[]; | |
5303 | int offsets[]; | |
5304 | }; | |
5305 | ||
5306 | ...as per Linton's paper. */ | |
5307 | ||
5308 | __t_desc_type_node = make_lang_type (RECORD_TYPE); | |
5309 | __i_desc_type_node = make_lang_type (RECORD_TYPE); | |
5310 | __m_desc_type_node = make_lang_type (RECORD_TYPE); | |
a28e3c7f | 5311 | __t_desc_array_type = |
f30432d7 | 5312 | build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE); |
a28e3c7f | 5313 | __i_desc_array_type = |
f30432d7 | 5314 | build_array_type (build_pointer_type (__i_desc_type_node), NULL_TREE); |
a28e3c7f | 5315 | __m_desc_array_type = |
f30432d7 | 5316 | build_array_type (build_pointer_type (__m_desc_type_node), NULL_TREE); |
8d08fdba MS |
5317 | |
5318 | fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"), | |
5319 | string_type_node); | |
5320 | fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("size"), | |
5321 | unsigned_type_node); | |
5322 | fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("bits"), | |
5323 | unsigned_type_node); | |
a28e3c7f MS |
5324 | fields[3] = build_lang_field_decl (FIELD_DECL, |
5325 | get_identifier ("points_to"), | |
f30432d7 | 5326 | build_pointer_type (__t_desc_type_node)); |
8d08fdba MS |
5327 | fields[4] = build_lang_field_decl (FIELD_DECL, |
5328 | get_identifier ("ivars_count"), | |
5329 | integer_type_node); | |
5330 | fields[5] = build_lang_field_decl (FIELD_DECL, | |
5331 | get_identifier ("meths_count"), | |
5332 | integer_type_node); | |
5333 | fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("ivars"), | |
5334 | build_pointer_type (__i_desc_array_type)); | |
5335 | fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("meths"), | |
5336 | build_pointer_type (__m_desc_array_type)); | |
5337 | fields[8] = build_lang_field_decl (FIELD_DECL, get_identifier ("parents"), | |
5338 | build_pointer_type (__t_desc_array_type)); | |
5339 | fields[9] = build_lang_field_decl (FIELD_DECL, get_identifier ("vbases"), | |
5340 | build_pointer_type (__t_desc_array_type)); | |
5341 | fields[10] = build_lang_field_decl (FIELD_DECL, get_identifier ("offsets"), | |
5342 | build_pointer_type (integer_type_node)); | |
5343 | finish_builtin_type (__t_desc_type_node, "__t_desc", fields, 10, integer_type_node); | |
5344 | ||
5345 | /* ivar descriptors look like this: | |
5346 | ||
5347 | struct __i_desc | |
5348 | { | |
5349 | const char *name; | |
5350 | int offset; | |
5351 | struct __t_desc *type; | |
5352 | }; | |
5353 | */ | |
5354 | ||
5355 | fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"), | |
5356 | string_type_node); | |
5357 | fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("offset"), | |
5358 | integer_type_node); | |
5359 | fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("type"), | |
f30432d7 | 5360 | build_pointer_type (__t_desc_type_node)); |
a28e3c7f MS |
5361 | finish_builtin_type (__i_desc_type_node, "__i_desc", fields, 2, |
5362 | integer_type_node); | |
8d08fdba MS |
5363 | |
5364 | /* method descriptors look like this: | |
5365 | ||
5366 | struct __m_desc | |
5367 | { | |
5368 | const char *name; | |
5369 | int vindex; | |
5370 | struct __t_desc *vcontext; | |
5371 | struct __t_desc *return_type; | |
5372 | void (*address)(); | |
5373 | short parm_count; | |
5374 | short required_parms; | |
5375 | struct __t_desc *parm_types[]; | |
5376 | }; | |
5377 | */ | |
5378 | ||
5379 | fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"), | |
5380 | string_type_node); | |
5381 | fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("vindex"), | |
5382 | integer_type_node); | |
5383 | fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("vcontext"), | |
f30432d7 | 5384 | build_pointer_type (__t_desc_type_node)); |
8d08fdba | 5385 | fields[3] = build_lang_field_decl (FIELD_DECL, get_identifier ("return_type"), |
f30432d7 | 5386 | build_pointer_type (__t_desc_type_node)); |
8d08fdba MS |
5387 | fields[4] = build_lang_field_decl (FIELD_DECL, get_identifier ("address"), |
5388 | build_pointer_type (default_function_type)); | |
5389 | fields[5] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_count"), | |
5390 | short_integer_type_node); | |
5391 | fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("required_parms"), | |
5392 | short_integer_type_node); | |
5393 | fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_types"), | |
f30432d7 | 5394 | build_pointer_type (build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE))); |
a28e3c7f MS |
5395 | finish_builtin_type (__m_desc_type_node, "__m_desc", fields, 7, |
5396 | integer_type_node); | |
8d08fdba MS |
5397 | } |
5398 | ||
db5ae43f | 5399 | if (flag_rtti) |
8d08fdba MS |
5400 | { |
5401 | int i = builtin_type_tdescs_len; | |
5402 | while (i > 0) | |
5403 | { | |
5404 | tree tdesc = build_t_desc (builtin_type_tdescs_arr[--i], 0); | |
5405 | TREE_ASM_WRITTEN (tdesc) = 1; | |
5406 | TREE_PUBLIC (TREE_OPERAND (tdesc, 0)) = 1; | |
5407 | } | |
5408 | } | |
db5ae43f MS |
5409 | #endif /*flag_rtti*/ |
5410 | ||
5411 | /* Now, C++. */ | |
5412 | current_lang_name = lang_name_cplusplus; | |
8d08fdba MS |
5413 | |
5414 | auto_function (ansi_opname[(int) NEW_EXPR], | |
5415 | build_function_type (ptr_type_node, | |
5416 | tree_cons (NULL_TREE, sizetype, | |
5417 | void_list_node)), | |
5418 | NOT_BUILT_IN); | |
a28e3c7f MS |
5419 | auto_function (ansi_opname[(int) VEC_NEW_EXPR], |
5420 | build_function_type (ptr_type_node, | |
5421 | tree_cons (NULL_TREE, sizetype, | |
5422 | void_list_node)), | |
5423 | NOT_BUILT_IN); | |
8d08fdba MS |
5424 | auto_function (ansi_opname[(int) DELETE_EXPR], |
5425 | build_function_type (void_type_node, | |
5426 | tree_cons (NULL_TREE, ptr_type_node, | |
5427 | void_list_node)), | |
5428 | NOT_BUILT_IN); | |
a28e3c7f MS |
5429 | auto_function (ansi_opname[(int) VEC_DELETE_EXPR], |
5430 | build_function_type (void_type_node, | |
5431 | tree_cons (NULL_TREE, ptr_type_node, | |
5432 | void_list_node)), | |
5433 | NOT_BUILT_IN); | |
8d08fdba MS |
5434 | |
5435 | abort_fndecl | |
eae89e04 | 5436 | = define_function ("__pure_virtual", |
8d08fdba MS |
5437 | build_function_type (void_type_node, void_list_node), |
5438 | NOT_BUILT_IN, 0, 0); | |
5439 | ||
8d08fdba MS |
5440 | /* Perform other language dependent initializations. */ |
5441 | init_class_processing (); | |
5442 | init_init_processing (); | |
5443 | init_search_processing (); | |
5444 | ||
5445 | if (flag_handle_exceptions) | |
8d2733ca | 5446 | init_exception_processing (); |
8d08fdba MS |
5447 | if (flag_no_inline) |
5448 | { | |
5449 | flag_inline_functions = 0; | |
8d08fdba | 5450 | } |
9e9ff709 | 5451 | |
72b7eeff MS |
5452 | if (! SUPPORTS_WEAK) |
5453 | flag_weak = 0; | |
8d08fdba MS |
5454 | |
5455 | /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */ | |
5456 | declare_function_name (); | |
5457 | ||
5458 | /* Prepare to check format strings against argument lists. */ | |
5459 | init_function_format_info (); | |
5460 | } | |
5461 | ||
db5ae43f MS |
5462 | /* initialize type descriptor type node of various rtti type. */ |
5463 | ||
5464 | int | |
5465 | init_type_desc() | |
5466 | { | |
5467 | tree tdecl; | |
5468 | ||
5469 | tdecl = lookup_name (get_identifier ("type_info"), 0); | |
5470 | if (tdecl == NULL_TREE) | |
5471 | return 0; | |
5472 | __t_desc_type_node = TREE_TYPE(tdecl); | |
5566b478 | 5473 | #if 0 |
db5ae43f | 5474 | __tp_desc_type_node = build_pointer_type (__t_desc_type_node); |
5566b478 | 5475 | #endif |
db5ae43f MS |
5476 | |
5477 | #if 0 | |
5478 | tdecl = lookup_name (get_identifier ("__baselist_type_info"), 0); | |
5479 | if (tdecl == NULL_TREE) | |
5480 | return 0; | |
5481 | __baselist_desc_type_node = TREE_TYPE (tdecl); | |
5482 | #endif | |
5483 | ||
5484 | tdecl = lookup_name (get_identifier ("__builtin_type_info"), 0); | |
5485 | if (tdecl == NULL_TREE) | |
5486 | return 0; | |
5487 | __bltn_desc_type_node = TREE_TYPE (tdecl); | |
5488 | ||
5489 | tdecl = lookup_name (get_identifier ("__user_type_info"), 0); | |
5490 | if (tdecl == NULL_TREE) | |
5491 | return 0; | |
5492 | __user_desc_type_node = TREE_TYPE (tdecl); | |
5493 | ||
5494 | tdecl = lookup_name (get_identifier ("__class_type_info"), 0); | |
5495 | if (tdecl == NULL_TREE) | |
5496 | return 0; | |
5497 | __class_desc_type_node = TREE_TYPE (tdecl); | |
5498 | ||
5499 | tdecl = lookup_field (__class_desc_type_node, | |
5500 | get_identifier ("access_mode"), 0, 0); | |
5501 | if (tdecl == NULL_TREE) | |
5502 | return 0; | |
5503 | __access_mode_type_node = TREE_TYPE (tdecl); | |
5504 | ||
5505 | tdecl = lookup_name (get_identifier ("__attr_type_info"), 0); | |
5506 | if (tdecl == NULL_TREE) | |
5507 | return 0; | |
5508 | __attr_desc_type_node = TREE_TYPE (tdecl); | |
5509 | ||
5510 | tdecl = lookup_name (get_identifier ("__pointer_type_info"), 0); | |
5511 | if (tdecl == NULL_TREE) | |
5512 | return 0; | |
5513 | __ptr_desc_type_node = TREE_TYPE (tdecl); | |
5514 | ||
5515 | tdecl = lookup_name (get_identifier ("__func_type_info"), 0); | |
5516 | if (tdecl == NULL_TREE) | |
5517 | return 0; | |
5518 | __func_desc_type_node = TREE_TYPE (tdecl); | |
5519 | ||
5520 | tdecl = lookup_name (get_identifier ("__ptmf_type_info"), 0); | |
5521 | if (tdecl == NULL_TREE) | |
5522 | return 0; | |
5523 | __ptmf_desc_type_node = TREE_TYPE (tdecl); | |
5524 | ||
5525 | tdecl = lookup_name (get_identifier ("__ptmd_type_info"), 0); | |
5526 | if (tdecl == NULL_TREE) | |
5527 | return 0; | |
5528 | __ptmd_desc_type_node = TREE_TYPE (tdecl); | |
5529 | ||
5530 | return 1; | |
5531 | } | |
8d08fdba MS |
5532 | /* Make a definition for a builtin function named NAME and whose data type |
5533 | is TYPE. TYPE should be a function type with argument types. | |
5534 | FUNCTION_CODE tells later passes how to compile calls to this function. | |
5535 | See tree.h for its possible values. | |
5536 | ||
5537 | If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME, | |
5538 | the name to be called if we can't opencode the function. */ | |
5539 | ||
5540 | tree | |
5541 | define_function (name, type, function_code, pfn, library_name) | |
5542 | char *name; | |
5543 | tree type; | |
5544 | enum built_in_function function_code; | |
5545 | void (*pfn)(); | |
5546 | char *library_name; | |
5547 | { | |
5548 | tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type); | |
5549 | DECL_EXTERNAL (decl) = 1; | |
5550 | TREE_PUBLIC (decl) = 1; | |
863adfc0 | 5551 | DECL_ARTIFICIAL (decl) = 1; |
8d08fdba MS |
5552 | |
5553 | /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME, | |
5554 | we cannot change DECL_ASSEMBLER_NAME until we have installed this | |
5555 | function in the namespace. */ | |
5556 | if (pfn) (*pfn) (decl); | |
5557 | if (library_name) | |
5558 | DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name); | |
5559 | make_function_rtl (decl); | |
5560 | if (function_code != NOT_BUILT_IN) | |
5561 | { | |
5562 | DECL_BUILT_IN (decl) = 1; | |
39211cd5 | 5563 | DECL_FUNCTION_CODE (decl) = function_code; |
8d08fdba MS |
5564 | } |
5565 | return decl; | |
5566 | } | |
5567 | \f | |
5568 | /* Called when a declaration is seen that contains no names to declare. | |
5569 | If its type is a reference to a structure, union or enum inherited | |
5570 | from a containing scope, shadow that tag name for the current scope | |
5571 | with a forward reference. | |
5572 | If its type defines a new named structure or union | |
5573 | or defines an enum, it is valid but we need not do anything here. | |
5574 | Otherwise, it is an error. | |
5575 | ||
5576 | C++: may have to grok the declspecs to learn about static, | |
5577 | complain for anonymous unions. */ | |
5578 | ||
5579 | void | |
5580 | shadow_tag (declspecs) | |
5581 | tree declspecs; | |
5582 | { | |
5583 | int found_tag = 0; | |
2986ae00 | 5584 | tree ob_modifier = NULL_TREE; |
8d08fdba MS |
5585 | register tree link; |
5586 | register enum tree_code code, ok_code = ERROR_MARK; | |
5587 | register tree t = NULL_TREE; | |
5588 | ||
5589 | for (link = declspecs; link; link = TREE_CHAIN (link)) | |
5590 | { | |
5591 | register tree value = TREE_VALUE (link); | |
5592 | ||
5593 | code = TREE_CODE (value); | |
5594 | if (IS_AGGR_TYPE_CODE (code) || code == ENUMERAL_TYPE) | |
8d08fdba | 5595 | { |
b8bca6f2 | 5596 | my_friendly_assert (TYPE_NAME (value) != NULL_TREE, 261); |
8d08fdba | 5597 | |
2986ae00 MS |
5598 | if (code == ENUMERAL_TYPE && TYPE_SIZE (value) == 0) |
5599 | cp_error ("forward declaration of `%#T'", value); | |
5600 | ||
5566b478 MS |
5601 | else if (IS_AGGR_TYPE (value) && CLASSTYPE_USE_TEMPLATE (value)) |
5602 | { | |
5603 | if (CLASSTYPE_IMPLICIT_INSTANTIATION (value) | |
5604 | && TYPE_SIZE (value) == NULL_TREE) | |
5605 | SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value); | |
5606 | else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value)) | |
5607 | cp_error ("specialization after instantiation of `%T'", value); | |
5608 | } | |
5609 | ||
b8bca6f2 JM |
5610 | t = value; |
5611 | ok_code = code; | |
5612 | found_tag++; | |
8d08fdba MS |
5613 | } |
5614 | else if (value == ridpointers[(int) RID_STATIC] | |
2986ae00 MS |
5615 | || value == ridpointers[(int) RID_EXTERN] |
5616 | || value == ridpointers[(int) RID_AUTO] | |
28cbf42c MS |
5617 | || value == ridpointers[(int) RID_REGISTER] |
5618 | || value == ridpointers[(int) RID_INLINE] | |
5619 | || value == ridpointers[(int) RID_VIRTUAL] | |
5620 | || value == ridpointers[(int) RID_EXPLICIT]) | |
2986ae00 | 5621 | ob_modifier = value; |
8d08fdba MS |
5622 | } |
5623 | ||
5624 | /* This is where the variables in an anonymous union are | |
5625 | declared. An anonymous union declaration looks like: | |
5626 | union { ... } ; | |
5627 | because there is no declarator after the union, the parser | |
5628 | sends that declaration here. */ | |
5629 | if (ok_code == UNION_TYPE | |
5630 | && t != NULL_TREE | |
5631 | && ((TREE_CODE (TYPE_NAME (t)) == IDENTIFIER_NODE | |
5632 | && ANON_AGGRNAME_P (TYPE_NAME (t))) | |
5633 | || (TREE_CODE (TYPE_NAME (t)) == TYPE_DECL | |
5634 | && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t))))) | |
5635 | { | |
5636 | /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have | |
5637 | function members. */ | |
5638 | if (TYPE_FIELDS (t)) | |
5639 | { | |
a28e3c7f | 5640 | tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0, |
f30432d7 | 5641 | NULL_TREE, NULL_TREE); |
8d08fdba MS |
5642 | finish_anon_union (decl); |
5643 | } | |
5644 | else | |
5645 | error ("anonymous union cannot have a function member"); | |
5646 | } | |
5647 | else | |
5648 | { | |
5649 | /* Anonymous unions are objects, that's why we only check for | |
2986ae00 | 5650 | inappropriate specifiers in this branch. */ |
28cbf42c | 5651 | |
2986ae00 | 5652 | if (ob_modifier) |
28cbf42c MS |
5653 | { |
5654 | if (ob_modifier == ridpointers[(int) RID_INLINE] | |
5655 | || ob_modifier == ridpointers[(int) RID_VIRTUAL]) | |
5656 | cp_error ("`%D' can only be specified for functions", ob_modifier); | |
5657 | else if (ob_modifier == ridpointers[(int) RID_EXPLICIT]) | |
5658 | cp_error ("`%D' can only be specified for constructors", | |
5659 | ob_modifier); | |
5660 | else | |
5661 | cp_error ("`%D' can only be specified for objects and functions", | |
5662 | ob_modifier); | |
5663 | } | |
8d08fdba | 5664 | |
b8bca6f2 | 5665 | if (found_tag == 0) |
2986ae00 | 5666 | pedwarn ("abstract declarator used as declaration"); |
b8bca6f2 | 5667 | else if (found_tag > 1) |
2986ae00 | 5668 | pedwarn ("multiple types in one declaration"); |
8d08fdba MS |
5669 | } |
5670 | } | |
5671 | \f | |
5672 | /* Decode a "typename", such as "int **", returning a ..._TYPE node. */ | |
5673 | ||
5674 | tree | |
5675 | groktypename (typename) | |
5676 | tree typename; | |
5677 | { | |
5678 | if (TREE_CODE (typename) != TREE_LIST) | |
5679 | return typename; | |
5680 | return grokdeclarator (TREE_VALUE (typename), | |
5681 | TREE_PURPOSE (typename), | |
f30432d7 | 5682 | TYPENAME, 0, NULL_TREE, NULL_TREE); |
8d08fdba MS |
5683 | } |
5684 | ||
5685 | /* Decode a declarator in an ordinary declaration or data definition. | |
5686 | This is called as soon as the type information and variable name | |
5687 | have been parsed, before parsing the initializer if any. | |
5688 | Here we create the ..._DECL node, fill in its type, | |
5689 | and put it on the list of decls for the current context. | |
5690 | The ..._DECL node is returned as the value. | |
5691 | ||
5692 | Exception: for arrays where the length is not specified, | |
82580166 | 5693 | the type is left null, to be filled in by `cp_finish_decl'. |
8d08fdba MS |
5694 | |
5695 | Function definitions do not come here; they go to start_function | |
5696 | instead. However, external and forward declarations of functions | |
5697 | do go through here. Structure field declarations are done by | |
5698 | grokfield and not through here. */ | |
5699 | ||
5700 | /* Set this to zero to debug not using the temporary obstack | |
5701 | to parse initializers. */ | |
5702 | int debug_temp_inits = 1; | |
5703 | ||
5566b478 MS |
5704 | void start_decl_1 (); |
5705 | ||
8d08fdba MS |
5706 | tree |
5707 | start_decl (declarator, declspecs, initialized, raises) | |
5708 | tree declarator, declspecs; | |
5709 | int initialized; | |
5710 | tree raises; | |
5711 | { | |
5712 | register tree decl; | |
5713 | register tree type, tem; | |
5714 | tree context; | |
5715 | extern int have_extern_spec; | |
5716 | extern int used_extern_spec; | |
5717 | ||
5566b478 MS |
5718 | #if 0 |
5719 | /* See code below that used this. */ | |
8d08fdba | 5720 | int init_written = initialized; |
5566b478 | 5721 | #endif |
8d08fdba MS |
5722 | |
5723 | /* This should only be done once on the top most decl. */ | |
5724 | if (have_extern_spec && !used_extern_spec) | |
5725 | { | |
a28e3c7f MS |
5726 | declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), |
5727 | declspecs); | |
8d08fdba MS |
5728 | used_extern_spec = 1; |
5729 | } | |
5730 | ||
f30432d7 MS |
5731 | decl = grokdeclarator (declarator, declspecs, NORMAL, initialized, raises, |
5732 | NULL_TREE); | |
8d08fdba MS |
5733 | if (decl == NULL_TREE || decl == void_type_node) |
5734 | return NULL_TREE; | |
5735 | ||
5736 | type = TREE_TYPE (decl); | |
5737 | ||
5738 | /* Don't lose if destructors must be executed at file-level. */ | |
5566b478 | 5739 | if (! current_template_parms && TREE_STATIC (decl) |
8d08fdba MS |
5740 | && TYPE_NEEDS_DESTRUCTOR (type) |
5741 | && !TREE_PERMANENT (decl)) | |
5742 | { | |
5743 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
5744 | decl = copy_node (decl); | |
5745 | if (TREE_CODE (type) == ARRAY_TYPE) | |
5746 | { | |
5747 | tree itype = TYPE_DOMAIN (type); | |
5748 | if (itype && ! TREE_PERMANENT (itype)) | |
5749 | { | |
5750 | itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype))); | |
5751 | type = build_cplus_array_type (TREE_TYPE (type), itype); | |
5752 | TREE_TYPE (decl) = type; | |
5753 | } | |
5754 | } | |
5755 | pop_obstacks (); | |
5756 | } | |
5757 | ||
8d08fdba MS |
5758 | context |
5759 | = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl)) | |
5760 | ? DECL_CLASS_CONTEXT (decl) | |
5761 | : DECL_CONTEXT (decl); | |
5762 | ||
8d08fdba MS |
5763 | if (initialized) |
5764 | /* Is it valid for this decl to have an initializer at all? | |
5765 | If not, set INITIALIZED to zero, which will indirectly | |
82580166 | 5766 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ |
8d08fdba MS |
5767 | switch (TREE_CODE (decl)) |
5768 | { | |
5769 | case TYPE_DECL: | |
5770 | /* typedef foo = bar means give foo the same type as bar. | |
82580166 | 5771 | We haven't parsed bar yet, so `cp_finish_decl' will fix that up. |
8d08fdba MS |
5772 | Any other case of an initialization in a TYPE_DECL is an error. */ |
5773 | if (pedantic || list_length (declspecs) > 1) | |
5774 | { | |
5775 | cp_error ("typedef `%D' is initialized", decl); | |
5776 | initialized = 0; | |
5777 | } | |
5778 | break; | |
5779 | ||
5780 | case FUNCTION_DECL: | |
5781 | cp_error ("function `%#D' is initialized like a variable", decl); | |
5782 | initialized = 0; | |
5783 | break; | |
5784 | ||
5785 | default: | |
5566b478 MS |
5786 | if (TREE_CODE (type) == ARRAY_TYPE && ! current_template_parms |
5787 | && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE) | |
8d08fdba MS |
5788 | { |
5789 | cp_error ("elements of array `%#D' have incomplete type", decl); | |
5790 | initialized = 0; | |
5791 | } | |
5792 | } | |
5793 | ||
8d08fdba MS |
5794 | if (initialized) |
5795 | { | |
a9aedbc2 | 5796 | if (! toplevel_bindings_p () |
8d08fdba MS |
5797 | && DECL_EXTERNAL (decl)) |
5798 | cp_warning ("declaration of `%#D' has `extern' and is initialized", | |
5799 | decl); | |
5800 | DECL_EXTERNAL (decl) = 0; | |
5566b478 | 5801 | if (toplevel_bindings_p ()) |
8d08fdba MS |
5802 | TREE_STATIC (decl) = 1; |
5803 | ||
5804 | /* Tell `pushdecl' this is an initialized decl | |
5805 | even though we don't yet have the initializer expression. | |
82580166 | 5806 | Also tell `cp_finish_decl' it may store the real initializer. */ |
8d08fdba MS |
5807 | DECL_INITIAL (decl) = error_mark_node; |
5808 | } | |
5809 | ||
5566b478 | 5810 | if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE) |
5b605f68 MS |
5811 | { |
5812 | if (TREE_CODE (decl) == VAR_DECL) | |
5813 | { | |
5814 | tree field = lookup_field (context, DECL_NAME (decl), 0, 0); | |
5815 | if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL) | |
5816 | cp_error ("`%#D' is not a static member of `%#T'", decl, context); | |
5817 | else if (duplicate_decls (decl, field)) | |
5818 | decl = field; | |
5819 | } | |
f30432d7 MS |
5820 | else |
5821 | { | |
5566b478 | 5822 | tree field = check_classfn (context, decl); |
f30432d7 MS |
5823 | if (field && duplicate_decls (decl, field)) |
5824 | decl = field; | |
5825 | } | |
5826 | ||
5827 | /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */ | |
5b605f68 MS |
5828 | if (DECL_LANG_SPECIFIC (decl)) |
5829 | DECL_IN_AGGR_P (decl) = 0; | |
f30432d7 MS |
5830 | if (DECL_USE_TEMPLATE (decl) || CLASSTYPE_USE_TEMPLATE (context)) |
5831 | SET_DECL_TEMPLATE_SPECIALIZATION (decl); | |
5832 | ||
5833 | /* Stupid stupid stupid stupid (jason 7/21/95) */ | |
5834 | if (pedantic && DECL_EXTERNAL (decl) | |
5835 | && ! DECL_TEMPLATE_SPECIALIZATION (decl)) | |
5836 | cp_pedwarn ("declaration of `%#D' outside of class is not definition", | |
5837 | decl); | |
5838 | ||
5b605f68 MS |
5839 | pushclass (context, 2); |
5840 | } | |
5841 | ||
8d08fdba MS |
5842 | /* Add this decl to the current binding level, but not if it |
5843 | comes from another scope, e.g. a static member variable. | |
5844 | TEM may equal DECL or it may be a previous decl of the same name. */ | |
5b605f68 | 5845 | |
8d08fdba MS |
5846 | if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE) |
5847 | || (TREE_CODE (decl) == TEMPLATE_DECL && !global_bindings_p ()) | |
5848 | || TREE_CODE (type) == LANG_TYPE) | |
5849 | tem = decl; | |
5850 | else | |
8926095f | 5851 | tem = pushdecl (decl); |
2ee887f2 | 5852 | |
5566b478 MS |
5853 | if (current_template_parms) |
5854 | { | |
5855 | if (! current_function_decl) | |
5856 | push_template_decl (tem); | |
5857 | else if (minimal_parse_mode) | |
5858 | DECL_VINDEX (decl) | |
5859 | = build_min_nt (DECL_STMT, copy_to_permanent (declarator), | |
5860 | copy_to_permanent (declspecs), | |
5861 | copy_to_permanent (raises), NULL_TREE); | |
5862 | } | |
5863 | ||
5864 | ||
2ee887f2 | 5865 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a3203465 MS |
5866 | /* Tell the back-end to use or not use .common as appropriate. If we say |
5867 | -fconserve-space, we want this to save space, at the expense of wrong | |
5868 | semantics. If we say -fno-conserve-space, we want this to produce | |
5869 | errors about redefs; to do this we force variables into the data | |
5870 | segment. Common storage is okay for non-public uninitialized data; | |
5871 | the linker can't match it with storage from other files, and we may | |
5872 | save some disk space. */ | |
5873 | DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem); | |
2ee887f2 | 5874 | #endif |
8d08fdba | 5875 | |
5566b478 MS |
5876 | if (! current_template_parms) |
5877 | start_decl_1 (tem); | |
8d08fdba | 5878 | |
5566b478 MS |
5879 | /* Corresponding pop_obstacks is done in `cp_finish_decl'. */ |
5880 | push_obstacks_nochange (); | |
8d08fdba | 5881 | |
5566b478 MS |
5882 | #if 0 |
5883 | /* We have no way of knowing whether the initializer will need to be | |
5884 | evaluated at run-time or not until we've parsed it, so let's just put | |
5885 | it in the permanent obstack. (jason) */ | |
8d08fdba MS |
5886 | if (init_written |
5887 | && ! (TREE_CODE (tem) == PARM_DECL | |
5888 | || (TREE_READONLY (tem) | |
5889 | && (TREE_CODE (tem) == VAR_DECL | |
5890 | || TREE_CODE (tem) == FIELD_DECL)))) | |
5891 | { | |
5892 | /* When parsing and digesting the initializer, | |
5893 | use temporary storage. Do this even if we will ignore the value. */ | |
a9aedbc2 | 5894 | if (toplevel_bindings_p () && debug_temp_inits) |
8d08fdba | 5895 | { |
5566b478 MS |
5896 | if (current_template_parms |
5897 | || TYPE_NEEDS_CONSTRUCTING (type) | |
a28e3c7f | 5898 | || TREE_CODE (type) == REFERENCE_TYPE) |
8d08fdba MS |
5899 | /* In this case, the initializer must lay down in permanent |
5900 | storage, since it will be saved until `finish_file' is run. */ | |
5901 | ; | |
5902 | else | |
5903 | temporary_allocation (); | |
5904 | } | |
5905 | } | |
5566b478 | 5906 | #endif |
8d08fdba | 5907 | |
8d08fdba MS |
5908 | return tem; |
5909 | } | |
5910 | ||
5566b478 MS |
5911 | void |
5912 | start_decl_1 (decl) | |
5913 | tree decl; | |
8d08fdba | 5914 | { |
5566b478 MS |
5915 | tree type = TREE_TYPE (decl); |
5916 | int initialized = (DECL_INITIAL (decl) != NULL_TREE); | |
8d08fdba | 5917 | |
5566b478 MS |
5918 | /* If this type of object needs a cleanup, and control may |
5919 | jump past it, make a new binding level so that it is cleaned | |
5920 | up only when it is initialized first. */ | |
5921 | if (TYPE_NEEDS_DESTRUCTOR (type) | |
5922 | && current_binding_level->more_cleanups_ok == 0) | |
5923 | pushlevel_temporary (1); | |
5924 | ||
5925 | if (initialized) | |
5926 | /* Is it valid for this decl to have an initializer at all? | |
5927 | If not, set INITIALIZED to zero, which will indirectly | |
5928 | tell `cp_finish_decl' to ignore the initializer once it is parsed. */ | |
8d08fdba | 5929 | { |
5566b478 MS |
5930 | /* Don't allow initializations for incomplete types except for |
5931 | arrays which might be completed by the initialization. */ | |
5932 | if (type == error_mark_node) | |
5933 | ; /* Don't complain again. */ | |
5934 | else if (TYPE_SIZE (complete_type (type)) != NULL_TREE) | |
5935 | ; /* A complete type is ok. */ | |
5936 | else if (TREE_CODE (type) != ARRAY_TYPE) | |
8d08fdba | 5937 | { |
5566b478 MS |
5938 | cp_error ("variable `%#D' has initializer but incomplete type", |
5939 | decl); | |
5940 | initialized = 0; | |
5941 | } | |
5942 | else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE) | |
5943 | { | |
5944 | if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)) | |
5945 | cp_error ("elements of array `%#D' have incomplete type", decl); | |
5946 | /* else we already gave an error in start_decl. */ | |
5947 | initialized = 0; | |
8d08fdba | 5948 | } |
8d08fdba MS |
5949 | } |
5950 | ||
5566b478 MS |
5951 | if (!initialized |
5952 | && TREE_CODE (decl) != TYPE_DECL | |
5953 | && TREE_CODE (decl) != TEMPLATE_DECL | |
5954 | && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl)) | |
8d08fdba | 5955 | { |
5566b478 MS |
5956 | if (TYPE_SIZE (complete_type (type)) == NULL_TREE) |
5957 | { | |
5958 | cp_error ("aggregate `%#D' has incomplete type and cannot be initialized", | |
5959 | decl); | |
5960 | /* Change the type so that assemble_variable will give | |
5961 | DECL an rtl we can live with: (mem (const_int 0)). */ | |
5962 | TREE_TYPE (decl) = error_mark_node; | |
5963 | type = error_mark_node; | |
5964 | } | |
5965 | else | |
5966 | { | |
5967 | /* If any base type in the hierarchy of TYPE needs a constructor, | |
5968 | then we set initialized to 1. This way any nodes which are | |
5969 | created for the purposes of initializing this aggregate | |
5970 | will live as long as it does. This is necessary for global | |
5971 | aggregates which do not have their initializers processed until | |
5972 | the end of the file. */ | |
5973 | initialized = TYPE_NEEDS_CONSTRUCTING (type); | |
5974 | } | |
5975 | } | |
5976 | ||
5977 | #if 0 | |
5978 | /* We don't do this yet for GNU C++. */ | |
5979 | /* For a local variable, define the RTL now. */ | |
5980 | if (! toplevel_bindings_p () | |
5981 | /* But not if this is a duplicate decl | |
5982 | and we preserved the rtl from the previous one | |
5983 | (which may or may not happen). */ | |
5984 | && DECL_RTL (tem) == NULL_RTX) | |
5985 | { | |
5986 | if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE) | |
5987 | expand_decl (tem); | |
5988 | else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE | |
5989 | && DECL_INITIAL (tem) != NULL_TREE) | |
5990 | expand_decl (tem); | |
5991 | } | |
5992 | #endif | |
5993 | ||
5994 | if (! initialized) | |
5995 | DECL_INITIAL (decl) = NULL_TREE; | |
5996 | } | |
5997 | ||
5998 | /* Handle initialization of references. | |
5999 | These three arguments from from `cp_finish_decl', and have the | |
6000 | same meaning here that they do there. */ | |
6001 | /* quotes on semantics can be found in ARM 8.4.3. */ | |
6002 | static void | |
6003 | grok_reference_init (decl, type, init, cleanupp) | |
6004 | tree decl, type, init; | |
6005 | tree *cleanupp; | |
6006 | { | |
6007 | tree tmp; | |
6008 | ||
6009 | if (init == NULL_TREE) | |
6010 | { | |
6011 | if ((DECL_LANG_SPECIFIC (decl) == 0 | |
6012 | || DECL_IN_AGGR_P (decl) == 0) | |
6013 | && ! DECL_THIS_EXTERN (decl)) | |
6014 | { | |
6015 | cp_error ("`%D' declared as reference but not initialized", decl); | |
6016 | if (TREE_CODE (decl) == VAR_DECL) | |
6017 | SET_DECL_REFERENCE_SLOT (decl, error_mark_node); | |
6018 | } | |
6019 | return; | |
6020 | } | |
6021 | ||
6022 | if (init == error_mark_node) | |
6023 | return; | |
6024 | ||
6025 | if (TREE_CODE (type) == REFERENCE_TYPE | |
6026 | && TREE_CODE (init) == CONSTRUCTOR) | |
6027 | { | |
6028 | cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl); | |
8d08fdba MS |
6029 | return; |
6030 | } | |
6031 | ||
6032 | if (TREE_CODE (init) == TREE_LIST) | |
6033 | init = build_compound_expr (init); | |
8d08fdba | 6034 | |
8ccc31eb MS |
6035 | if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE) |
6036 | init = convert_from_reference (init); | |
6037 | ||
8d08fdba MS |
6038 | if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE |
6039 | && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE) | |
6040 | { | |
a3203465 | 6041 | /* Note: default conversion is only called in very special cases. */ |
8d08fdba MS |
6042 | init = default_conversion (init); |
6043 | } | |
6044 | ||
a3203465 MS |
6045 | tmp = convert_to_reference |
6046 | (type, init, CONV_IMPLICIT, LOOKUP_SPECULATIVELY|LOOKUP_NORMAL, decl); | |
8d08fdba | 6047 | |
a3203465 MS |
6048 | if (tmp == error_mark_node) |
6049 | goto fail; | |
6050 | else if (tmp != NULL_TREE) | |
8d08fdba | 6051 | { |
9a0e77ba | 6052 | tree subtype = TREE_TYPE (type); |
a3203465 | 6053 | init = tmp; |
8d08fdba | 6054 | |
9a0e77ba JM |
6055 | /* Associate the cleanup with the reference so that we |
6056 | don't get burned by "aggressive" cleanup policy. */ | |
6057 | if (TYPE_NEEDS_DESTRUCTOR (subtype)) | |
8d08fdba | 6058 | { |
2ee887f2 MS |
6059 | if (TREE_CODE (tmp) == ADDR_EXPR) |
6060 | tmp = TREE_OPERAND (tmp, 0); | |
6061 | if (TREE_CODE (tmp) == TARGET_EXPR) | |
9a0e77ba | 6062 | { |
2ee887f2 MS |
6063 | *cleanupp = build_delete |
6064 | (build_pointer_type (subtype), | |
6065 | build_unary_op (ADDR_EXPR, TREE_OPERAND (tmp, 0), 0), | |
6066 | integer_two_node, LOOKUP_NORMAL|LOOKUP_DESTRUCTOR, 0); | |
6067 | TREE_OPERAND (tmp, 2) = error_mark_node; | |
9a0e77ba | 6068 | } |
8d08fdba | 6069 | } |
8d08fdba | 6070 | |
4c7bdca6 | 6071 | DECL_INITIAL (decl) = save_expr (init); |
8d08fdba | 6072 | } |
a3203465 | 6073 | else |
8d08fdba | 6074 | { |
a3203465 MS |
6075 | cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init)); |
6076 | goto fail; | |
8d08fdba | 6077 | } |
8d08fdba | 6078 | |
8d08fdba MS |
6079 | /* ?? Can this be optimized in some cases to |
6080 | hand back the DECL_INITIAL slot?? */ | |
6081 | if (TYPE_SIZE (TREE_TYPE (type))) | |
6082 | { | |
6083 | init = convert_from_reference (decl); | |
6084 | if (TREE_PERMANENT (decl)) | |
6085 | init = copy_to_permanent (init); | |
6086 | SET_DECL_REFERENCE_SLOT (decl, init); | |
6087 | } | |
6088 | ||
6089 | if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl))) | |
6090 | { | |
6091 | expand_static_init (decl, DECL_INITIAL (decl)); | |
6092 | DECL_INITIAL (decl) = NULL_TREE; | |
6093 | } | |
6094 | return; | |
6095 | ||
6096 | fail: | |
6097 | if (TREE_CODE (decl) == VAR_DECL) | |
6098 | SET_DECL_REFERENCE_SLOT (decl, error_mark_node); | |
6099 | return; | |
6100 | } | |
6101 | ||
6060a796 MS |
6102 | /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from |
6103 | mucking with forces it does not comprehend (i.e. initialization with a | |
6104 | constructor). If we are at global scope and won't go into COMMON, fill | |
6105 | it in with a dummy CONSTRUCTOR to force the variable into .data; | |
6106 | otherwise we can use error_mark_node. */ | |
6107 | ||
28cbf42c MS |
6108 | static tree |
6109 | obscure_complex_init (decl, init) | |
6110 | tree decl, init; | |
6060a796 | 6111 | { |
28cbf42c MS |
6112 | if (! flag_no_inline && TREE_STATIC (decl)) |
6113 | { | |
6114 | if (extract_init (decl, init)) | |
6115 | return NULL_TREE; | |
6116 | } | |
6117 | ||
2ee887f2 | 6118 | #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS) |
a9aedbc2 | 6119 | if (toplevel_bindings_p () && ! DECL_COMMON (decl)) |
6060a796 MS |
6120 | DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE, |
6121 | NULL_TREE); | |
6122 | else | |
2ee887f2 | 6123 | #endif |
6060a796 | 6124 | DECL_INITIAL (decl) = error_mark_node; |
28cbf42c MS |
6125 | |
6126 | return init; | |
6060a796 MS |
6127 | } |
6128 | ||
8d08fdba MS |
6129 | /* Finish processing of a declaration; |
6130 | install its line number and initial value. | |
6131 | If the length of an array type is not known before, | |
6132 | it must be determined now, from the initial value, or it is an error. | |
6133 | ||
6134 | Call `pop_obstacks' iff NEED_POP is nonzero. | |
6135 | ||
82580166 | 6136 | For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers |
8d08fdba MS |
6137 | for aggregates that have constructors alive on the permanent obstack, |
6138 | so that the global initializing functions can be written at the end. | |
6139 | ||
6140 | INIT0 holds the value of an initializer that should be allowed to escape | |
6141 | the normal rules. | |
6142 | ||
6060a796 MS |
6143 | FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0 |
6144 | if the (init) syntax was used. | |
6145 | ||
8d08fdba | 6146 | For functions that take default parameters, DECL points to its |
82580166 | 6147 | "maximal" instantiation. `cp_finish_decl' must then also declared its |
8d08fdba MS |
6148 | subsequently lower and lower forms of instantiation, checking for |
6149 | ambiguity as it goes. This can be sped up later. */ | |
6150 | ||
6151 | void | |
82580166 | 6152 | cp_finish_decl (decl, init, asmspec_tree, need_pop, flags) |
8d08fdba MS |
6153 | tree decl, init; |
6154 | tree asmspec_tree; | |
6155 | int need_pop; | |
6060a796 | 6156 | int flags; |
8d08fdba MS |
6157 | { |
6158 | register tree type; | |
6159 | tree cleanup = NULL_TREE, ttype; | |
6160 | int was_incomplete; | |
6161 | int temporary = allocation_temporary_p (); | |
6162 | char *asmspec = NULL; | |
6163 | int was_readonly = 0; | |
6164 | ||
6165 | /* If this is 0, then we did not change obstacks. */ | |
6166 | if (! decl) | |
6167 | { | |
6168 | if (init) | |
6169 | error ("assignment (not initialization) in declaration"); | |
6170 | return; | |
6171 | } | |
6172 | ||
a4443a08 | 6173 | /* If a name was specified, get the string. */ |
8d08fdba | 6174 | if (asmspec_tree) |
8d08fdba | 6175 | asmspec = TREE_STRING_POINTER (asmspec_tree); |
8d08fdba MS |
6176 | |
6177 | /* If the type of the thing we are declaring either has | |
6178 | a constructor, or has a virtual function table pointer, | |
6179 | AND its initialization was accepted by `start_decl', | |
6180 | then we stayed on the permanent obstack through the | |
6181 | declaration, otherwise, changed obstacks as GCC would. */ | |
6182 | ||
6183 | type = TREE_TYPE (decl); | |
6184 | ||
f376e137 | 6185 | if (type == error_mark_node) |
eac293a1 | 6186 | { |
a9aedbc2 | 6187 | if (toplevel_bindings_p () && temporary) |
eac293a1 MS |
6188 | end_temporary_allocation (); |
6189 | ||
6190 | return; | |
6191 | } | |
f376e137 | 6192 | |
5566b478 MS |
6193 | if (current_template_parms) |
6194 | { | |
6195 | if (init && DECL_INITIAL (decl)) | |
6196 | DECL_INITIAL (decl) = init; | |
6197 | if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl)) | |
6198 | { | |
6199 | tree stmt = DECL_VINDEX (decl); | |
6200 | DECL_VINDEX (decl) = NULL_TREE; | |
6201 | TREE_OPERAND (stmt, 3) = copy_to_permanent (init); | |
6202 | add_tree (stmt); | |
6203 | } | |
8d08fdba | 6204 | |
5566b478 MS |
6205 | goto finish_end0; |
6206 | } | |
8d08fdba MS |
6207 | /* Take care of TYPE_DECLs up front. */ |
6208 | if (TREE_CODE (decl) == TYPE_DECL) | |
6209 | { | |
6210 | if (init && DECL_INITIAL (decl)) | |
6211 | { | |
6212 | /* typedef foo = bar; store the type of bar as the type of foo. */ | |
6213 | TREE_TYPE (decl) = type = TREE_TYPE (init); | |
6214 | DECL_INITIAL (decl) = init = NULL_TREE; | |
6215 | } | |
a0a33927 MS |
6216 | if (type != error_mark_node |
6217 | && IS_AGGR_TYPE (type) && DECL_NAME (decl)) | |
8d08fdba MS |
6218 | { |
6219 | if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type) | |
6220 | cp_warning ("shadowing previous type declaration of `%#D'", decl); | |
6221 | set_identifier_type_value (DECL_NAME (decl), type); | |
6222 | CLASSTYPE_GOT_SEMICOLON (type) = 1; | |
6223 | } | |
6224 | GNU_xref_decl (current_function_decl, decl); | |
cffa8729 MS |
6225 | |
6226 | /* If we have installed this as the canonical typedef for this | |
6227 | type, and that type has not been defined yet, delay emitting | |
6228 | the debug informaion for it, as we will emit it later. */ | |
6229 | if (TYPE_NAME (TREE_TYPE (decl)) == decl | |
6230 | && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE) | |
6231 | TYPE_DECL_SUPPRESS_DEBUG (decl) = 1; | |
6232 | ||
8d08fdba | 6233 | rest_of_decl_compilation (decl, NULL_PTR, |
5566b478 | 6234 | DECL_CONTEXT (decl) == NULL_TREE, at_eof); |
8d08fdba MS |
6235 | goto finish_end; |
6236 | } | |
8d08fdba MS |
6237 | if (TREE_CODE (decl) != FUNCTION_DECL) |
6238 | { | |
6239 | ttype = target_type (type); | |
8d08fdba MS |
6240 | } |
6241 | ||
6242 | if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl) | |
6243 | && TYPE_NEEDS_CONSTRUCTING (type)) | |
6244 | { | |
6245 | ||
6246 | /* Currently, GNU C++ puts constants in text space, making them | |
6247 | impossible to initialize. In the future, one would hope for | |
6248 | an operating system which understood the difference between | |
6249 | initialization and the running of a program. */ | |
6250 | was_readonly = 1; | |
6251 | TREE_READONLY (decl) = 0; | |
6252 | } | |
6253 | ||
6254 | if (TREE_CODE (decl) == FIELD_DECL) | |
6255 | { | |
6256 | if (init && init != error_mark_node) | |
6257 | my_friendly_assert (TREE_PERMANENT (init), 147); | |
6258 | ||
6259 | if (asmspec) | |
6260 | { | |
6261 | /* This must override the asm specifier which was placed | |
6060a796 | 6262 | by grokclassfn. Lay this out fresh. */ |
8d08fdba MS |
6263 | DECL_RTL (TREE_TYPE (decl)) = NULL_RTX; |
6264 | DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec); | |
6265 | make_decl_rtl (decl, asmspec, 0); | |
6266 | } | |
6267 | } | |
6268 | /* If `start_decl' didn't like having an initialization, ignore it now. */ | |
6269 | else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE) | |
6270 | init = NULL_TREE; | |
6271 | else if (DECL_EXTERNAL (decl)) | |
6272 | ; | |
6273 | else if (TREE_CODE (type) == REFERENCE_TYPE | |
6274 | || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type))) | |
6275 | { | |
f376e137 MS |
6276 | if (TREE_STATIC (decl)) |
6277 | make_decl_rtl (decl, NULL_PTR, | |
a9aedbc2 | 6278 | toplevel_bindings_p () |
f376e137 | 6279 | || pseudo_global_level_p ()); |
8d08fdba MS |
6280 | grok_reference_init (decl, type, init, &cleanup); |
6281 | init = NULL_TREE; | |
6282 | } | |
6283 | ||
6284 | GNU_xref_decl (current_function_decl, decl); | |
6285 | ||
a0a33927 | 6286 | if (TREE_CODE (decl) == FIELD_DECL) |
8d08fdba MS |
6287 | ; |
6288 | else if (TREE_CODE (decl) == CONST_DECL) | |
6289 | { | |
6290 | my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148); | |
6291 | ||
6292 | DECL_INITIAL (decl) = init; | |
6293 | ||
6294 | /* This will keep us from needing to worry about our obstacks. */ | |
6295 | my_friendly_assert (init != NULL_TREE, 149); | |
6296 | init = NULL_TREE; | |
6297 | } | |
6298 | else if (init) | |
6299 | { | |
6300 | if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type)) | |
6301 | { | |
6302 | if (TREE_CODE (type) == ARRAY_TYPE) | |
6303 | init = digest_init (type, init, (tree *) 0); | |
a3203465 | 6304 | else if (TREE_CODE (init) == CONSTRUCTOR) |
8d08fdba | 6305 | { |
f30432d7 | 6306 | if (TYPE_NON_AGGREGATE_CLASS (type)) |
8d08fdba | 6307 | { |
a28e3c7f MS |
6308 | cp_error ("`%D' must be initialized by constructor, not by `{...}'", |
6309 | decl); | |
8d08fdba MS |
6310 | init = error_mark_node; |
6311 | } | |
6312 | else | |
6313 | goto dont_use_constructor; | |
6314 | } | |
8d08fdba MS |
6315 | } |
6316 | else | |
6317 | { | |
6318 | dont_use_constructor: | |
6319 | if (TREE_CODE (init) != TREE_VEC) | |
6320 | init = store_init_value (decl, init); | |
8d08fdba | 6321 | } |
28cbf42c MS |
6322 | |
6323 | if (init) | |
6324 | /* We must hide the initializer so that expand_decl | |
6325 | won't try to do something it does not understand. */ | |
6326 | init = obscure_complex_init (decl, init); | |
8d08fdba | 6327 | } |
a0a33927 MS |
6328 | else if (DECL_EXTERNAL (decl)) |
6329 | ; | |
8d08fdba MS |
6330 | else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't' |
6331 | && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type))) | |
6332 | { | |
6333 | tree ctype = type; | |
6334 | while (TREE_CODE (ctype) == ARRAY_TYPE) | |
6335 | ctype = TREE_TYPE (ctype); | |
6336 | if (! TYPE_NEEDS_CONSTRUCTING (ctype)) | |
6337 | { | |
6338 | if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype)) | |
6339 | cp_error ("structure `%D' with uninitialized const members", decl); | |
6340 | if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype)) | |
a28e3c7f MS |
6341 | cp_error ("structure `%D' with uninitialized reference members", |
6342 | decl); | |
8d08fdba MS |
6343 | } |
6344 | ||
6345 | if (TREE_CODE (decl) == VAR_DECL | |
6346 | && !DECL_INITIAL (decl) | |
6347 | && !TYPE_NEEDS_CONSTRUCTING (type) | |
6348 | && (TYPE_READONLY (type) || TREE_READONLY (decl))) | |
6349 | cp_error ("uninitialized const `%D'", decl); | |
6350 | ||
6060a796 MS |
6351 | if (TYPE_SIZE (type) != NULL_TREE |
6352 | && TYPE_NEEDS_CONSTRUCTING (type)) | |
28cbf42c | 6353 | init = obscure_complex_init (decl, NULL_TREE); |
8d08fdba MS |
6354 | } |
6355 | else if (TREE_CODE (decl) == VAR_DECL | |
6356 | && TREE_CODE (type) != REFERENCE_TYPE | |
6357 | && (TYPE_READONLY (type) || TREE_READONLY (decl))) | |
6358 | { | |
6359 | /* ``Unless explicitly declared extern, a const object does not have | |
6360 | external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6 | |
6361 | However, if it's `const int foo = 1; const int foo;', don't complain | |
6362 | about the second decl, since it does have an initializer before. | |
6363 | We deliberately don't complain about arrays, because they're | |
6364 | supposed to be initialized by a constructor. */ | |
6365 | if (! DECL_INITIAL (decl) | |
6366 | && TREE_CODE (type) != ARRAY_TYPE | |
6367 | && (!pedantic || !current_class_type)) | |
6368 | cp_error ("uninitialized const `%#D'", decl); | |
6369 | } | |
6370 | ||
6371 | /* For top-level declaration, the initial value was read in | |
6372 | the temporary obstack. MAXINDEX, rtl, etc. to be made below | |
6373 | must go in the permanent obstack; but don't discard the | |
6374 | temporary data yet. */ | |
6375 | ||
a9aedbc2 | 6376 | if (toplevel_bindings_p () && temporary) |
8d08fdba MS |
6377 | end_temporary_allocation (); |
6378 | ||
6379 | /* Deduce size of array from initialization, if not already known. */ | |
6380 | ||
6381 | if (TREE_CODE (type) == ARRAY_TYPE | |
6382 | && TYPE_DOMAIN (type) == NULL_TREE | |
6383 | && TREE_CODE (decl) != TYPE_DECL) | |
6384 | { | |
6385 | int do_default | |
6386 | = (TREE_STATIC (decl) | |
6387 | /* Even if pedantic, an external linkage array | |
6388 | may have incomplete type at first. */ | |
6389 | ? pedantic && ! DECL_EXTERNAL (decl) | |
6390 | : !DECL_EXTERNAL (decl)); | |
6391 | tree initializer = init ? init : DECL_INITIAL (decl); | |
6392 | int failure = complete_array_type (type, initializer, do_default); | |
6393 | ||
6394 | if (failure == 1) | |
6395 | cp_error ("initializer fails to determine size of `%D'", decl); | |
6396 | ||
6397 | if (failure == 2) | |
6398 | { | |
6399 | if (do_default) | |
6400 | cp_error ("array size missing in `%D'", decl); | |
6401 | /* If a `static' var's size isn't known, make it extern as | |
6402 | well as static, so it does not get allocated. If it's not | |
6403 | `static', then don't mark it extern; finish_incomplete_decl | |
6404 | will give it a default size and it will get allocated. */ | |
6405 | else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl)) | |
6406 | DECL_EXTERNAL (decl) = 1; | |
6407 | } | |
6408 | ||
6409 | if (pedantic && TYPE_DOMAIN (type) != NULL_TREE | |
6410 | && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)), | |
6411 | integer_zero_node)) | |
6412 | cp_error ("zero-size array `%D'", decl); | |
6413 | ||
6414 | layout_decl (decl, 0); | |
6415 | } | |
6416 | ||
6417 | if (TREE_CODE (decl) == VAR_DECL) | |
6418 | { | |
6419 | if (DECL_SIZE (decl) == NULL_TREE | |
6420 | && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE) | |
6421 | layout_decl (decl, 0); | |
6422 | ||
6423 | if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE) | |
6424 | { | |
6425 | /* A static variable with an incomplete type: | |
6426 | that is an error if it is initialized. | |
6427 | Otherwise, let it through, but if it is not `extern' | |
6428 | then it may cause an error message later. */ | |
6429 | if (DECL_INITIAL (decl) != NULL_TREE) | |
6430 | cp_error ("storage size of `%D' isn't known", decl); | |
6431 | init = NULL_TREE; | |
6432 | } | |
6433 | else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE) | |
6434 | { | |
6435 | /* An automatic variable with an incomplete type: that is an error. | |
6436 | Don't talk about array types here, since we took care of that | |
6437 | message in grokdeclarator. */ | |
6438 | cp_error ("storage size of `%D' isn't known", decl); | |
6439 | TREE_TYPE (decl) = error_mark_node; | |
6440 | } | |
6441 | else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype)) | |
6442 | /* Let debugger know it should output info for this type. */ | |
6443 | note_debug_info_needed (ttype); | |
6444 | ||
44a8d0b3 MS |
6445 | if (TREE_STATIC (decl) && DECL_CONTEXT (decl) |
6446 | && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't') | |
6447 | note_debug_info_needed (DECL_CONTEXT (decl)); | |
6448 | ||
8d08fdba MS |
6449 | if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl)) |
6450 | && DECL_SIZE (decl) != NULL_TREE | |
6451 | && ! TREE_CONSTANT (DECL_SIZE (decl))) | |
6452 | { | |
6453 | if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST) | |
6454 | constant_expression_warning (DECL_SIZE (decl)); | |
6455 | else | |
6456 | cp_error ("storage size of `%D' isn't constant", decl); | |
6457 | } | |
6458 | ||
6459 | if (!DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)) | |
6460 | { | |
6461 | int yes = suspend_momentary (); | |
2ee887f2 | 6462 | cleanup = maybe_build_cleanup (decl); |
8d08fdba MS |
6463 | resume_momentary (yes); |
6464 | } | |
6465 | } | |
6466 | /* PARM_DECLs get cleanups, too. */ | |
6467 | else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type)) | |
6468 | { | |
6469 | if (temporary) | |
6470 | end_temporary_allocation (); | |
6471 | cleanup = maybe_build_cleanup (decl); | |
6472 | if (temporary) | |
6473 | resume_temporary_allocation (); | |
6474 | } | |
6475 | ||
6476 | /* Output the assembler code and/or RTL code for variables and functions, | |
6477 | unless the type is an undefined structure or union. | |
6478 | If not, it will get done when the type is completed. */ | |
6479 | ||
5566b478 MS |
6480 | was_incomplete = (DECL_SIZE (decl) == NULL_TREE); |
6481 | ||
8d08fdba MS |
6482 | if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL |
6483 | || TREE_CODE (decl) == RESULT_DECL) | |
6484 | { | |
6485 | /* ??? FIXME: What about nested classes? */ | |
a9aedbc2 | 6486 | int toplev = toplevel_bindings_p () || pseudo_global_level_p (); |
8d08fdba MS |
6487 | int was_temp |
6488 | = ((flag_traditional | |
6489 | || (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type))) | |
6490 | && allocation_temporary_p ()); | |
6491 | ||
6492 | if (was_temp) | |
6493 | end_temporary_allocation (); | |
6494 | ||
8d08fdba MS |
6495 | if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl)) |
6496 | make_decl_rtl (decl, NULL_PTR, toplev); | |
6497 | else if (TREE_CODE (decl) == VAR_DECL | |
6498 | && TREE_READONLY (decl) | |
6499 | && DECL_INITIAL (decl) != NULL_TREE | |
6500 | && DECL_INITIAL (decl) != error_mark_node | |
a3203465 | 6501 | && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))) |
8d08fdba MS |
6502 | { |
6503 | DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl)); | |
6504 | ||
6505 | if (asmspec) | |
6506 | DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec); | |
6507 | ||
6508 | if (! toplev | |
6509 | && TREE_STATIC (decl) | |
6510 | && ! TREE_SIDE_EFFECTS (decl) | |
6511 | && ! TREE_PUBLIC (decl) | |
6512 | && ! DECL_EXTERNAL (decl) | |
6513 | && ! TYPE_NEEDS_DESTRUCTOR (type) | |
6514 | && DECL_MODE (decl) != BLKmode) | |
6515 | { | |
6516 | /* If this variable is really a constant, then fill its DECL_RTL | |
6517 | slot with something which won't take up storage. | |
6518 | If something later should take its address, we can always give | |
6519 | it legitimate RTL at that time. */ | |
6520 | DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl)); | |
6521 | store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0); | |
6522 | TREE_ASM_WRITTEN (decl) = 1; | |
6523 | } | |
a0a33927 | 6524 | else if (toplev && ! TREE_PUBLIC (decl)) |
8d08fdba | 6525 | { |
8d08fdba | 6526 | /* If this is a static const, change its apparent linkage |
db5ae43f | 6527 | if it belongs to a #pragma interface. */ |
a0a33927 | 6528 | if (!interface_unknown) |
8d08fdba MS |
6529 | { |
6530 | TREE_PUBLIC (decl) = 1; | |
6531 | DECL_EXTERNAL (decl) = interface_only; | |
6532 | } | |
6533 | make_decl_rtl (decl, asmspec, toplev); | |
6534 | } | |
6535 | else | |
5566b478 | 6536 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
8d08fdba MS |
6537 | } |
6538 | else if (TREE_CODE (decl) == VAR_DECL | |
6539 | && DECL_LANG_SPECIFIC (decl) | |
6540 | && DECL_IN_AGGR_P (decl)) | |
6541 | { | |
6542 | if (TREE_STATIC (decl)) | |
6543 | { | |
6544 | if (init == NULL_TREE | |
6545 | #ifdef DEFAULT_STATIC_DEFS | |
6546 | /* If this code is dead, then users must | |
6547 | explicitly declare static member variables | |
6548 | outside the class def'n as well. */ | |
6549 | && TYPE_NEEDS_CONSTRUCTING (type) | |
6550 | #endif | |
6551 | ) | |
6552 | { | |
6553 | DECL_EXTERNAL (decl) = 1; | |
6554 | make_decl_rtl (decl, asmspec, 1); | |
6555 | } | |
6556 | else | |
5566b478 | 6557 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
8d08fdba MS |
6558 | } |
6559 | else | |
6560 | /* Just a constant field. Should not need any rtl. */ | |
6561 | goto finish_end0; | |
6562 | } | |
6563 | else | |
5566b478 | 6564 | rest_of_decl_compilation (decl, asmspec, toplev, at_eof); |
8d08fdba MS |
6565 | |
6566 | if (was_temp) | |
6567 | resume_temporary_allocation (); | |
6568 | ||
6569 | if (type != error_mark_node | |
6570 | && TYPE_LANG_SPECIFIC (type) | |
6571 | && CLASSTYPE_ABSTRACT_VIRTUALS (type)) | |
6572 | abstract_virtuals_error (decl, type); | |
6573 | else if ((TREE_CODE (type) == FUNCTION_TYPE | |
6574 | || TREE_CODE (type) == METHOD_TYPE) | |
6575 | && TYPE_LANG_SPECIFIC (TREE_TYPE (type)) | |
6576 | && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type))) | |
6577 | abstract_virtuals_error (decl, TREE_TYPE (type)); | |
6578 | ||
6579 | if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type)) | |
6580 | signature_error (decl, type); | |
6581 | else if ((TREE_CODE (type) == FUNCTION_TYPE | |
6582 | || TREE_CODE (type) == METHOD_TYPE) | |
6583 | && TYPE_LANG_SPECIFIC (TREE_TYPE (type)) | |
6584 | && IS_SIGNATURE (TREE_TYPE (type))) | |
6585 | signature_error (decl, TREE_TYPE (type)); | |
6586 | ||
6587 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
faae18ab | 6588 | ; |
8d08fdba | 6589 | else if (DECL_EXTERNAL (decl)) |
5566b478 MS |
6590 | { |
6591 | if (init) | |
6592 | DECL_INITIAL (decl) = init; | |
6593 | } | |
8d08fdba MS |
6594 | else if (TREE_STATIC (decl) && type != error_mark_node) |
6595 | { | |
6596 | /* Cleanups for static variables are handled by `finish_file'. */ | |
f30432d7 MS |
6597 | if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE |
6598 | || TYPE_NEEDS_DESTRUCTOR (type)) | |
8d08fdba | 6599 | expand_static_init (decl, init); |
8d08fdba MS |
6600 | } |
6601 | else if (! toplev) | |
6602 | { | |
72b7eeff MS |
6603 | extern int temp_slot_level; |
6604 | extern int target_temp_slot_level; | |
a4443a08 | 6605 | tree old_cleanups = cleanups_this_call; |
72b7eeff MS |
6606 | int old_temp_level = target_temp_slot_level; |
6607 | ||
8d08fdba MS |
6608 | /* This is a declared decl which must live until the |
6609 | end of the binding contour. It may need a cleanup. */ | |
6610 | ||
6611 | /* Recompute the RTL of a local array now | |
6612 | if it used to be an incomplete type. */ | |
6613 | if (was_incomplete && ! TREE_STATIC (decl)) | |
6614 | { | |
6615 | /* If we used it already as memory, it must stay in memory. */ | |
6616 | TREE_ADDRESSABLE (decl) = TREE_USED (decl); | |
6617 | /* If it's still incomplete now, no init will save it. */ | |
6618 | if (DECL_SIZE (decl) == NULL_TREE) | |
6619 | DECL_INITIAL (decl) = NULL_TREE; | |
6620 | expand_decl (decl); | |
6621 | } | |
6622 | else if (! TREE_ASM_WRITTEN (decl) | |
6623 | && (TYPE_SIZE (type) != NULL_TREE | |
6624 | || TREE_CODE (type) == ARRAY_TYPE)) | |
6625 | { | |
6626 | /* Do this here, because we did not expand this decl's | |
6627 | rtl in start_decl. */ | |
6628 | if (DECL_RTL (decl) == NULL_RTX) | |
6629 | expand_decl (decl); | |
6630 | else if (cleanup) | |
6631 | { | |
8d2733ca MS |
6632 | /* XXX: Why don't we use decl here? */ |
6633 | /* Ans: Because it was already expanded? */ | |
f30432d7 | 6634 | if (! cp_expand_decl_cleanup (NULL_TREE, cleanup)) |
8d2733ca MS |
6635 | cp_error ("parser lost in parsing declaration of `%D'", |
6636 | decl); | |
8d08fdba MS |
6637 | /* Cleanup used up here. */ |
6638 | cleanup = NULL_TREE; | |
6639 | } | |
6640 | } | |
6641 | ||
2ee887f2 MS |
6642 | if (current_binding_level->is_for_scope) |
6643 | { | |
6644 | struct binding_level *outer = current_binding_level->level_chain; | |
6645 | ||
6646 | /* Check to see if the same name is already bound at | |
6647 | the outer level, either because it was directly declared, | |
6648 | or because a dead for-decl got preserved. In either case, | |
6649 | the code would not have been valid under the traditional | |
6650 | scope rules, so clear is_for_scope for the | |
6651 | current_binding_level. | |
6652 | ||
6653 | Otherwise, we need to preserve the temp slot for decl | |
6654 | to last into the outer binding level. */ | |
6655 | ||
6656 | int handling_dead_for_vars = 0; | |
6657 | tree link = outer->names; | |
6658 | for (; ; link = TREE_CHAIN (link)) | |
6659 | { | |
6660 | if (link == NULL && handling_dead_for_vars == 0) | |
6661 | { | |
6662 | link = outer->dead_vars_from_for; | |
6663 | handling_dead_for_vars = 1; | |
6664 | } | |
6665 | if (link == NULL) | |
6666 | { | |
cffa8729 | 6667 | if (DECL_IN_MEMORY_P (decl)) |
2ee887f2 MS |
6668 | preserve_temp_slots (DECL_RTL (decl)); |
6669 | break; | |
6670 | } | |
6671 | if (DECL_NAME (link) == DECL_NAME (decl)) | |
6672 | { | |
6673 | if (handling_dead_for_vars) | |
6674 | { | |
6675 | tree shadowing | |
6676 | = purpose_member (DECL_NAME (decl), | |
6677 | current_binding_level->shadowed); | |
6678 | if (shadowing && TREE_VALUE (shadowing) == link) | |
6679 | TREE_VALUE (shadowing) | |
6680 | = DECL_SHADOWED_FOR_VAR (link); | |
6681 | } | |
6682 | current_binding_level->is_for_scope = 0; | |
6683 | break; | |
6684 | } | |
6685 | } | |
6686 | } | |
6687 | ||
72b7eeff MS |
6688 | push_temp_slots (); |
6689 | push_temp_slots (); | |
6690 | target_temp_slot_level = temp_slot_level; | |
6691 | ||
8d08fdba MS |
6692 | if (DECL_SIZE (decl) && type != error_mark_node) |
6693 | { | |
6694 | /* Compute and store the initial value. */ | |
6695 | expand_decl_init (decl); | |
6696 | ||
6697 | if (init || TYPE_NEEDS_CONSTRUCTING (type)) | |
6698 | { | |
a28e3c7f MS |
6699 | emit_line_note (DECL_SOURCE_FILE (decl), |
6700 | DECL_SOURCE_LINE (decl)); | |
6060a796 | 6701 | expand_aggr_init (decl, init, 0, flags); |
8d08fdba MS |
6702 | } |
6703 | ||
00595019 MS |
6704 | /* Set this to 0 so we can tell whether an aggregate which |
6705 | was initialized was ever used. Don't do this if it has a | |
6706 | destructor, so we don't complain about the 'resource | |
6707 | allocation is initialization' idiom. */ | |
be99da77 MS |
6708 | if (TYPE_NEEDS_CONSTRUCTING (type) |
6709 | && cleanup == NULL_TREE | |
6710 | && DECL_NAME (decl)) | |
8d08fdba MS |
6711 | TREE_USED (decl) = 0; |
6712 | ||
6713 | /* Store the cleanup, if there was one. */ | |
6714 | if (cleanup) | |
6715 | { | |
f30432d7 | 6716 | if (! cp_expand_decl_cleanup (decl, cleanup)) |
a28e3c7f MS |
6717 | cp_error ("parser lost in parsing declaration of `%D'", |
6718 | decl); | |
8d08fdba MS |
6719 | } |
6720 | } | |
a4443a08 MS |
6721 | /* Cleanup any temporaries needed for the initial value. */ |
6722 | expand_cleanups_to (old_cleanups); | |
72b7eeff MS |
6723 | pop_temp_slots (); |
6724 | pop_temp_slots (); | |
6725 | target_temp_slot_level = old_temp_level; | |
8d08fdba MS |
6726 | } |
6727 | finish_end0: | |
6728 | ||
6729 | /* Undo call to `pushclass' that was done in `start_decl' | |
6730 | due to initialization of qualified member variable. | |
6731 | I.e., Foo::x = 10; */ | |
6732 | { | |
f30432d7 | 6733 | tree context = DECL_REAL_CONTEXT (decl); |
8d08fdba MS |
6734 | if (context |
6735 | && TREE_CODE_CLASS (TREE_CODE (context)) == 't' | |
6736 | && (TREE_CODE (decl) == VAR_DECL | |
6737 | /* We also have a pushclass done that we need to undo here | |
6738 | if we're at top level and declare a method. */ | |
5566b478 MS |
6739 | || TREE_CODE (decl) == FUNCTION_DECL) |
6740 | /* If size hasn't been set, we're still defining it, | |
6741 | and therefore inside the class body; don't pop | |
6742 | the binding level.. */ | |
6743 | && TYPE_SIZE (context) != NULL_TREE | |
6744 | && context == current_class_type) | |
8d08fdba MS |
6745 | popclass (1); |
6746 | } | |
6747 | } | |
6748 | ||
6749 | finish_end: | |
6750 | ||
39211cd5 MS |
6751 | /* If requested, warn about definitions of large data objects. */ |
6752 | ||
6753 | if (warn_larger_than | |
5566b478 | 6754 | && ! current_template_parms |
39211cd5 MS |
6755 | && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) |
6756 | && !DECL_EXTERNAL (decl)) | |
6757 | { | |
6758 | register tree decl_size = DECL_SIZE (decl); | |
6759 | ||
6760 | if (decl_size && TREE_CODE (decl_size) == INTEGER_CST) | |
6761 | { | |
6762 | unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT; | |
6763 | ||
6764 | if (units > larger_than_size) | |
6765 | warning_with_decl (decl, "size of `%s' is %u bytes", units); | |
6766 | } | |
6767 | } | |
6768 | ||
8d08fdba MS |
6769 | if (need_pop) |
6770 | { | |
6771 | /* Resume permanent allocation, if not within a function. */ | |
6772 | /* The corresponding push_obstacks_nochange is in start_decl, | |
6773 | start_method, groktypename, and in grokfield. */ | |
6774 | pop_obstacks (); | |
6775 | } | |
6776 | ||
6777 | if (was_readonly) | |
6778 | TREE_READONLY (decl) = 1; | |
8d08fdba MS |
6779 | } |
6780 | ||
82580166 MS |
6781 | /* This is here for a midend callback from c-common.c */ |
6782 | void | |
6783 | finish_decl (decl, init, asmspec_tree) | |
6784 | tree decl, init; | |
6785 | tree asmspec_tree; | |
6786 | { | |
6787 | cp_finish_decl (decl, init, asmspec_tree, 1, 0); | |
6788 | } | |
6789 | ||
8d08fdba MS |
6790 | void |
6791 | expand_static_init (decl, init) | |
6792 | tree decl; | |
6793 | tree init; | |
6794 | { | |
6795 | tree oldstatic = value_member (decl, static_aggregates); | |
a4443a08 | 6796 | |
8d08fdba MS |
6797 | if (oldstatic) |
6798 | { | |
6799 | if (TREE_PURPOSE (oldstatic) && init != NULL_TREE) | |
6800 | cp_error ("multiple initializations given for `%D'", decl); | |
6801 | } | |
a9aedbc2 | 6802 | else if (! toplevel_bindings_p () && ! pseudo_global_level_p ()) |
8d08fdba MS |
6803 | { |
6804 | /* Emit code to perform this initialization but once. */ | |
6805 | tree temp; | |
6806 | ||
72b7eeff MS |
6807 | extern int temp_slot_level; |
6808 | extern int target_temp_slot_level; | |
6809 | tree old_cleanups; | |
6810 | int old_temp_level; | |
6811 | ||
8d08fdba MS |
6812 | /* Remember this information until end of file. */ |
6813 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
6814 | ||
6815 | /* Emit code to perform this initialization but once. */ | |
6816 | temp = get_temp_name (integer_type_node, 1); | |
6817 | rest_of_decl_compilation (temp, NULL_PTR, 0, 0); | |
6818 | expand_start_cond (build_binary_op (EQ_EXPR, temp, | |
6819 | integer_zero_node, 1), 0); | |
a4443a08 | 6820 | old_cleanups = cleanups_this_call; |
72b7eeff MS |
6821 | old_temp_level = target_temp_slot_level; |
6822 | push_temp_slots (); | |
6823 | push_temp_slots (); | |
6824 | target_temp_slot_level = temp_slot_level; | |
6825 | ||
8d08fdba | 6826 | expand_assignment (temp, integer_one_node, 0, 0); |
28cbf42c | 6827 | if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)) |
f30432d7 | 6828 | || (init && TREE_CODE (init) == TREE_LIST)) |
8d08fdba | 6829 | { |
6060a796 | 6830 | expand_aggr_init (decl, init, 0, 0); |
8d08fdba MS |
6831 | do_pending_stack_adjust (); |
6832 | } | |
f30432d7 | 6833 | else if (init) |
8d08fdba | 6834 | expand_assignment (decl, init, 0, 0); |
f30432d7 | 6835 | |
a4443a08 MS |
6836 | /* Cleanup any temporaries needed for the initial value. */ |
6837 | expand_cleanups_to (old_cleanups); | |
72b7eeff MS |
6838 | pop_temp_slots (); |
6839 | pop_temp_slots (); | |
6840 | target_temp_slot_level = old_temp_level; | |
6841 | ||
6842 | if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl))) | |
6843 | { | |
6844 | tree cleanup, fcall; | |
6845 | static tree Atexit = 0; | |
6846 | if (Atexit == 0) | |
6847 | { | |
6848 | tree atexit_fndecl, PFV, pfvlist; | |
6849 | /* Remember this information until end of file. */ | |
6850 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
6851 | PFV = build_pointer_type (build_function_type | |
6852 | (void_type_node, void_list_node)); | |
6853 | ||
6854 | pfvlist = tree_cons (NULL_TREE, PFV, void_list_node); | |
6855 | ||
6856 | push_lang_context (lang_name_c); | |
6857 | atexit_fndecl = | |
6858 | builtin_function ("atexit", | |
6859 | build_function_type (void_type_node, | |
6860 | pfvlist), | |
6861 | NOT_BUILT_IN, NULL_PTR); | |
be99da77 | 6862 | assemble_external (atexit_fndecl); |
72b7eeff MS |
6863 | Atexit = default_conversion (atexit_fndecl); |
6864 | pop_lang_context (); | |
6865 | pop_obstacks (); | |
6866 | } | |
6867 | ||
6868 | cleanup = start_anon_func (); | |
6869 | expand_expr_stmt (build_cleanup (decl)); | |
6870 | end_anon_func (); | |
6871 | mark_addressable (cleanup); | |
6872 | cleanup = build_unary_op (ADDR_EXPR, cleanup, 0); | |
6873 | fcall = build_function_call (Atexit, tree_cons (NULL_TREE, cleanup, NULL_TREE)); | |
6874 | expand_expr_stmt (fcall); | |
6875 | } | |
6876 | ||
8d08fdba MS |
6877 | expand_end_cond (); |
6878 | if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl))) | |
6879 | { | |
6880 | static_aggregates = perm_tree_cons (temp, decl, static_aggregates); | |
6881 | TREE_STATIC (static_aggregates) = 1; | |
6882 | } | |
6883 | ||
6884 | /* Resume old (possibly temporary) allocation. */ | |
6885 | pop_obstacks (); | |
6886 | } | |
6887 | else | |
6888 | { | |
6889 | /* This code takes into account memory allocation | |
6890 | policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING | |
6891 | does not hold for this object, then we must make permanent | |
6892 | the storage currently in the temporary obstack. */ | |
6893 | if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))) | |
6894 | preserve_initializer (); | |
6895 | static_aggregates = perm_tree_cons (init, decl, static_aggregates); | |
6896 | } | |
6897 | } | |
6898 | \f | |
6899 | /* Make TYPE a complete type based on INITIAL_VALUE. | |
6900 | Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered, | |
6901 | 2 if there was no information (in which case assume 1 if DO_DEFAULT). */ | |
6902 | ||
6903 | int | |
6904 | complete_array_type (type, initial_value, do_default) | |
6905 | tree type, initial_value; | |
6906 | int do_default; | |
6907 | { | |
6908 | register tree maxindex = NULL_TREE; | |
6909 | int value = 0; | |
6910 | ||
6911 | if (initial_value) | |
6912 | { | |
6913 | /* Note MAXINDEX is really the maximum index, | |
6914 | one less than the size. */ | |
6915 | if (TREE_CODE (initial_value) == STRING_CST) | |
e1cd6e56 MS |
6916 | { |
6917 | int eltsize | |
6918 | = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value))); | |
6919 | maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value) | |
6920 | / eltsize) - 1, 0); | |
6921 | } | |
8d08fdba MS |
6922 | else if (TREE_CODE (initial_value) == CONSTRUCTOR) |
6923 | { | |
e1cd6e56 MS |
6924 | tree elts = CONSTRUCTOR_ELTS (initial_value); |
6925 | maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node); | |
6926 | for (; elts; elts = TREE_CHAIN (elts)) | |
6927 | { | |
6928 | if (TREE_PURPOSE (elts)) | |
6929 | maxindex = TREE_PURPOSE (elts); | |
6930 | else | |
6931 | maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node); | |
6932 | } | |
6933 | maxindex = copy_node (maxindex); | |
8d08fdba MS |
6934 | } |
6935 | else | |
6936 | { | |
6937 | /* Make an error message unless that happened already. */ | |
6938 | if (initial_value != error_mark_node) | |
6939 | value = 1; | |
6940 | ||
6941 | /* Prevent further error messages. */ | |
6942 | maxindex = build_int_2 (0, 0); | |
6943 | } | |
6944 | } | |
6945 | ||
6946 | if (!maxindex) | |
6947 | { | |
6948 | if (do_default) | |
6949 | maxindex = build_int_2 (0, 0); | |
6950 | value = 2; | |
6951 | } | |
6952 | ||
6953 | if (maxindex) | |
6954 | { | |
51c184be MS |
6955 | tree itype; |
6956 | ||
8d08fdba | 6957 | TYPE_DOMAIN (type) = build_index_type (maxindex); |
dff6b454 | 6958 | if (! TREE_TYPE (maxindex)) |
8d08fdba | 6959 | TREE_TYPE (maxindex) = TYPE_DOMAIN (type); |
51c184be MS |
6960 | if (initial_value) |
6961 | itype = TREE_TYPE (initial_value); | |
6962 | else | |
6963 | itype = NULL; | |
6964 | if (itype && !TYPE_DOMAIN (itype)) | |
6965 | TYPE_DOMAIN (itype) = TYPE_DOMAIN (type); | |
dff6b454 RK |
6966 | /* The type of the main variant should never be used for arrays |
6967 | of different sizes. It should only ever be completed with the | |
6968 | size of the array. */ | |
6969 | if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type))) | |
6970 | TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type); | |
8d08fdba MS |
6971 | } |
6972 | ||
6973 | /* Lay out the type now that we can get the real answer. */ | |
6974 | ||
6975 | layout_type (type); | |
6976 | ||
6977 | return value; | |
6978 | } | |
6979 | \f | |
6980 | /* Return zero if something is declared to be a member of type | |
6981 | CTYPE when in the context of CUR_TYPE. STRING is the error | |
6982 | message to print in that case. Otherwise, quietly return 1. */ | |
6983 | static int | |
6984 | member_function_or_else (ctype, cur_type, string) | |
6985 | tree ctype, cur_type; | |
6986 | char *string; | |
6987 | { | |
6988 | if (ctype && ctype != cur_type) | |
6989 | { | |
6990 | error (string, TYPE_NAME_STRING (ctype)); | |
6991 | return 0; | |
6992 | } | |
6993 | return 1; | |
6994 | } | |
6995 | \f | |
6996 | /* Subroutine of `grokdeclarator'. */ | |
6997 | ||
6998 | /* Generate errors possibly applicable for a given set of specifiers. | |
6999 | This is for ARM $7.1.2. */ | |
7000 | static void | |
7001 | bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises) | |
7002 | tree object; | |
7003 | char *type; | |
7004 | int virtualp, quals, friendp, raises, inlinep; | |
7005 | { | |
7006 | if (virtualp) | |
7007 | cp_error ("`%D' declared as a `virtual' %s", object, type); | |
7008 | if (inlinep) | |
7009 | cp_error ("`%D' declared as an `inline' %s", object, type); | |
7010 | if (quals) | |
a28e3c7f MS |
7011 | cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration", |
7012 | object, type); | |
8d08fdba MS |
7013 | if (friendp) |
7014 | cp_error_at ("invalid friend declaration", object); | |
7015 | if (raises) | |
6060a796 | 7016 | cp_error_at ("invalid exception specifications", object); |
8d08fdba MS |
7017 | } |
7018 | ||
7019 | /* CTYPE is class type, or null if non-class. | |
7020 | TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE | |
7021 | or METHOD_TYPE. | |
7022 | DECLARATOR is the function's name. | |
7023 | VIRTUALP is truthvalue of whether the function is virtual or not. | |
7024 | FLAGS are to be passed through to `grokclassfn'. | |
7025 | QUALS are qualifiers indicating whether the function is `const' | |
7026 | or `volatile'. | |
7027 | RAISES is a list of exceptions that this function can raise. | |
7028 | CHECK is 1 if we must find this method in CTYPE, 0 if we should | |
7029 | not look, and -1 if we should not call `grokclassfn' at all. */ | |
7030 | static tree | |
a28e3c7f | 7031 | grokfndecl (ctype, type, declarator, virtualp, flags, quals, |
5566b478 | 7032 | raises, attrlist, check, publicp, inlinep, funcdef_flag) |
8d08fdba MS |
7033 | tree ctype, type; |
7034 | tree declarator; | |
7035 | int virtualp; | |
7036 | enum overload_flags flags; | |
f30432d7 | 7037 | tree quals, raises, attrlist; |
5566b478 | 7038 | int check, publicp, inlinep, funcdef_flag; |
8d08fdba MS |
7039 | { |
7040 | tree cname, decl; | |
7041 | int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE; | |
7042 | ||
7043 | if (ctype) | |
7044 | cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL | |
7045 | ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype); | |
7046 | else | |
7047 | cname = NULL_TREE; | |
7048 | ||
7049 | if (raises) | |
7050 | { | |
f30432d7 | 7051 | type = build_exception_variant (type, raises); |
8d08fdba MS |
7052 | raises = TYPE_RAISES_EXCEPTIONS (type); |
7053 | } | |
7054 | decl = build_lang_decl (FUNCTION_DECL, declarator, type); | |
7055 | /* propagate volatile out from type to decl */ | |
7056 | if (TYPE_VOLATILE (type)) | |
7057 | TREE_THIS_VOLATILE (decl) = 1; | |
7058 | ||
7059 | /* Should probably propagate const out from type to decl I bet (mrs). */ | |
7060 | if (staticp) | |
7061 | { | |
7062 | DECL_STATIC_FUNCTION_P (decl) = 1; | |
7063 | DECL_CONTEXT (decl) = ctype; | |
7064 | DECL_CLASS_CONTEXT (decl) = ctype; | |
7065 | } | |
7066 | ||
db5ae43f MS |
7067 | /* All function decls start out public; we'll fix their linkage later (at |
7068 | definition or EOF) if appropriate. */ | |
7069 | TREE_PUBLIC (decl) = 1; | |
7070 | ||
faae18ab MS |
7071 | if (ctype == NULL_TREE && ! strcmp (IDENTIFIER_POINTER (declarator), "main")) |
7072 | { | |
7073 | if (inlinep) | |
7074 | error ("cannot declare `main' to be inline"); | |
7075 | else if (! publicp) | |
7076 | error ("cannot declare `main' to be static"); | |
7077 | inlinep = 0; | |
7078 | publicp = 1; | |
7079 | } | |
7080 | ||
7081 | if (! publicp) | |
7082 | DECL_C_STATIC (decl) = 1; | |
7083 | ||
7084 | if (inlinep) | |
7085 | DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1; | |
8d08fdba MS |
7086 | |
7087 | DECL_EXTERNAL (decl) = 1; | |
7088 | if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE) | |
7089 | { | |
7090 | cp_error ("%smember function `%D' cannot have `%T' method qualifier", | |
7091 | (ctype ? "static " : "non-"), decl, TREE_VALUE (quals)); | |
7092 | quals = NULL_TREE; | |
7093 | } | |
7094 | ||
7095 | if (IDENTIFIER_OPNAME_P (DECL_NAME (decl))) | |
7096 | grok_op_properties (decl, virtualp, check < 0); | |
7097 | ||
7098 | /* Caller will do the rest of this. */ | |
7099 | if (check < 0) | |
7100 | return decl; | |
7101 | ||
5566b478 MS |
7102 | if (check && funcdef_flag) |
7103 | DECL_INITIAL (decl) = error_mark_node; | |
7104 | ||
8d08fdba MS |
7105 | if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator) |
7106 | { | |
7107 | tree tmp; | |
7108 | /* Just handle constructors here. We could do this | |
7109 | inside the following if stmt, but I think | |
7110 | that the code is more legible by breaking this | |
7111 | case out. See comments below for what each of | |
7112 | the following calls is supposed to do. */ | |
7113 | DECL_CONSTRUCTOR_P (decl) = 1; | |
7114 | ||
7115 | grokclassfn (ctype, declarator, decl, flags, quals); | |
7116 | if (check) | |
5566b478 MS |
7117 | { |
7118 | tmp = check_classfn (ctype, decl); | |
7119 | if (tmp && duplicate_decls (decl, tmp)) | |
7120 | return tmp; | |
7121 | } | |
a0a33927 MS |
7122 | if (! grok_ctor_properties (ctype, decl)) |
7123 | return NULL_TREE; | |
7124 | ||
7177d104 | 7125 | if (check == 0 && ! current_function_decl) |
8d08fdba | 7126 | { |
700f8a87 MS |
7127 | /* FIXME: this should only need to look at |
7128 | IDENTIFIER_GLOBAL_VALUE. */ | |
8d08fdba MS |
7129 | tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0); |
7130 | if (tmp == NULL_TREE) | |
7131 | IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl; | |
7132 | else if (TREE_CODE (tmp) != TREE_CODE (decl)) | |
7133 | cp_error ("inconsistent declarations for `%D'", decl); | |
7134 | else | |
7135 | { | |
7136 | duplicate_decls (decl, tmp); | |
7137 | decl = tmp; | |
7138 | /* avoid creating circularities. */ | |
7139 | DECL_CHAIN (decl) = NULL_TREE; | |
7140 | } | |
7141 | make_decl_rtl (decl, NULL_PTR, 1); | |
7142 | } | |
7143 | } | |
7144 | else | |
7145 | { | |
7146 | tree tmp; | |
7147 | ||
7148 | /* Function gets the ugly name, field gets the nice one. | |
7149 | This call may change the type of the function (because | |
7150 | of default parameters)! */ | |
7151 | if (ctype != NULL_TREE) | |
7152 | grokclassfn (ctype, cname, decl, flags, quals); | |
7153 | ||
7154 | if (ctype != NULL_TREE && check) | |
5566b478 MS |
7155 | { |
7156 | tmp = check_classfn (ctype, decl); | |
7157 | if (tmp && DECL_STATIC_FUNCTION_P (tmp) | |
7158 | && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE) | |
7159 | { | |
7160 | /* Remove the `this' parm added by grokclassfn. | |
7161 | XXX Isn't this done in start_function, too? */ | |
7162 | revert_static_member_fn (&decl, NULL, NULL); | |
7163 | last_function_parms = TREE_CHAIN (last_function_parms); | |
7164 | } | |
7165 | if (tmp && duplicate_decls (decl, tmp)) | |
7166 | return tmp; | |
7167 | } | |
8d08fdba MS |
7168 | |
7169 | if (ctype == NULL_TREE || check) | |
7170 | return decl; | |
7171 | ||
7177d104 MS |
7172 | /* Now install the declaration of this function so that others may |
7173 | find it (esp. its DECL_FRIENDLIST). Don't do this for local class | |
7174 | methods, though. */ | |
7175 | if (! current_function_decl) | |
8d08fdba | 7176 | { |
7177d104 MS |
7177 | /* FIXME: this should only need to look at |
7178 | IDENTIFIER_GLOBAL_VALUE. */ | |
7179 | tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0); | |
7180 | if (tmp == NULL_TREE) | |
7181 | IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl; | |
7182 | else if (TREE_CODE (tmp) != TREE_CODE (decl)) | |
7183 | cp_error ("inconsistent declarations for `%D'", decl); | |
7184 | else | |
7185 | { | |
7186 | duplicate_decls (decl, tmp); | |
7187 | decl = tmp; | |
7188 | /* avoid creating circularities. */ | |
7189 | DECL_CHAIN (decl) = NULL_TREE; | |
7190 | } | |
f30432d7 MS |
7191 | |
7192 | if (attrlist) | |
7193 | cplus_decl_attributes (decl, TREE_PURPOSE (attrlist), | |
7194 | TREE_VALUE (attrlist)); | |
7177d104 | 7195 | make_decl_rtl (decl, NULL_PTR, 1); |
8d08fdba | 7196 | } |
8d08fdba MS |
7197 | if (virtualp) |
7198 | { | |
2ee887f2 | 7199 | DECL_VIRTUAL_P (decl) = 1; |
8d08fdba MS |
7200 | if (DECL_VINDEX (decl) == NULL_TREE) |
7201 | DECL_VINDEX (decl) = error_mark_node; | |
7202 | IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1; | |
8d08fdba MS |
7203 | } |
7204 | } | |
7205 | return decl; | |
7206 | } | |
7207 | ||
7208 | static tree | |
a9aedbc2 | 7209 | grokvardecl (type, declarator, specbits, initialized, constp) |
8d08fdba MS |
7210 | tree type; |
7211 | tree declarator; | |
7212 | RID_BIT_TYPE specbits; | |
7213 | int initialized; | |
a9aedbc2 | 7214 | int constp; |
8d08fdba MS |
7215 | { |
7216 | tree decl; | |
7217 | ||
7218 | if (TREE_CODE (type) == OFFSET_TYPE) | |
7219 | { | |
7220 | /* If you declare a static member so that it | |
7221 | can be initialized, the code will reach here. */ | |
5b605f68 MS |
7222 | tree basetype = TYPE_OFFSET_BASETYPE (type); |
7223 | type = TREE_TYPE (type); | |
7224 | decl = build_lang_field_decl (VAR_DECL, declarator, type); | |
7225 | DECL_CONTEXT (decl) = basetype; | |
7226 | DECL_CLASS_CONTEXT (decl) = basetype; | |
f376e137 | 7227 | DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator); |
8d08fdba MS |
7228 | } |
7229 | else | |
7230 | decl = build_decl (VAR_DECL, declarator, type); | |
7231 | ||
6060a796 MS |
7232 | DECL_ASSEMBLER_NAME (decl) = current_namespace_id (DECL_ASSEMBLER_NAME (decl)); |
7233 | ||
8d08fdba MS |
7234 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
7235 | { | |
7236 | DECL_THIS_EXTERN (decl) = 1; | |
7237 | DECL_EXTERNAL (decl) = !initialized; | |
7238 | } | |
7239 | ||
7240 | /* In class context, static means one per class, | |
7241 | public access, and static storage. */ | |
7242 | if (DECL_FIELD_CONTEXT (decl) != NULL_TREE | |
7243 | && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl))) | |
7244 | { | |
7245 | TREE_PUBLIC (decl) = 1; | |
7246 | TREE_STATIC (decl) = 1; | |
5b605f68 | 7247 | DECL_EXTERNAL (decl) = 0; |
8d08fdba MS |
7248 | } |
7249 | /* At top level, either `static' or no s.c. makes a definition | |
7250 | (perhaps tentative), and absence of `static' makes it public. */ | |
a9aedbc2 | 7251 | else if (toplevel_bindings_p ()) |
8d08fdba | 7252 | { |
a9aedbc2 | 7253 | TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits) |
9fffd093 | 7254 | && (DECL_THIS_EXTERN (decl) || ! constp)); |
8d08fdba MS |
7255 | TREE_STATIC (decl) = ! DECL_EXTERNAL (decl); |
7256 | } | |
7257 | /* Not at top level, only `static' makes a static definition. */ | |
7258 | else | |
7259 | { | |
7260 | TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits); | |
7261 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl); | |
7262 | } | |
7263 | return decl; | |
7264 | } | |
7265 | ||
7266 | /* Create a canonical pointer to member function type. */ | |
7267 | ||
7268 | tree | |
7269 | build_ptrmemfunc_type (type) | |
7270 | tree type; | |
7271 | { | |
7272 | tree fields[4]; | |
7273 | tree t; | |
7274 | tree u; | |
7275 | ||
7276 | /* If a canonical type already exists for this type, use it. We use | |
7277 | this method instead of type_hash_canon, because it only does a | |
7278 | simple equality check on the list of field members. */ | |
7279 | ||
7280 | if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type))) | |
7281 | return t; | |
7282 | ||
7283 | push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type)); | |
7284 | ||
7285 | u = make_lang_type (UNION_TYPE); | |
f30432d7 | 7286 | IS_AGGR_TYPE (u) = 0; |
8d08fdba | 7287 | fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type); |
a28e3c7f MS |
7288 | fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier, |
7289 | delta_type_node); | |
8d08fdba MS |
7290 | finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node); |
7291 | TYPE_NAME (u) = NULL_TREE; | |
7292 | ||
7293 | t = make_lang_type (RECORD_TYPE); | |
7294 | ||
7295 | /* Let the front-end know this is a pointer to member function. */ | |
db5ae43f | 7296 | TYPE_PTRMEMFUNC_FLAG (t) = 1; |
f376e137 MS |
7297 | /* and not really an aggregate. */ |
7298 | IS_AGGR_TYPE (t) = 0; | |
8d08fdba | 7299 | |
a28e3c7f MS |
7300 | fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier, |
7301 | delta_type_node); | |
7302 | fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier, | |
7303 | delta_type_node); | |
8d08fdba MS |
7304 | fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u); |
7305 | finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node); | |
7306 | ||
7307 | pop_obstacks (); | |
7308 | ||
7309 | /* Zap out the name so that the back-end will give us the debugging | |
7310 | information for this anonymous RECORD_TYPE. */ | |
7311 | TYPE_NAME (t) = NULL_TREE; | |
7312 | ||
7313 | TYPE_SET_PTRMEMFUNC_TYPE (type, t); | |
7314 | ||
7315 | /* Seems to be wanted. */ | |
7316 | CLASSTYPE_GOT_SEMICOLON (t) = 1; | |
7317 | return t; | |
7318 | } | |
7319 | ||
7320 | /* Given declspecs and a declarator, | |
7321 | determine the name and type of the object declared | |
7322 | and construct a ..._DECL node for it. | |
7323 | (In one case we can return a ..._TYPE node instead. | |
7324 | For invalid input we sometimes return 0.) | |
7325 | ||
7326 | DECLSPECS is a chain of tree_list nodes whose value fields | |
7327 | are the storage classes and type specifiers. | |
7328 | ||
7329 | DECL_CONTEXT says which syntactic context this declaration is in: | |
7330 | NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL. | |
7331 | FUNCDEF for a function definition. Like NORMAL but a few different | |
7332 | error messages in each case. Return value may be zero meaning | |
7333 | this definition is too screwy to try to parse. | |
7334 | MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to | |
7335 | handle member functions (which have FIELD context). | |
7336 | Return value may be zero meaning this definition is too screwy to | |
7337 | try to parse. | |
7338 | PARM for a parameter declaration (either within a function prototype | |
7339 | or before a function body). Make a PARM_DECL, or return void_type_node. | |
db5ae43f | 7340 | CATCHPARM for a parameter declaration before a catch clause. |
8d08fdba MS |
7341 | TYPENAME if for a typename (in a cast or sizeof). |
7342 | Don't make a DECL node; just return the ..._TYPE node. | |
7343 | FIELD for a struct or union field; make a FIELD_DECL. | |
7344 | BITFIELD for a field with specified width. | |
7345 | INITIALIZED is 1 if the decl has an initializer. | |
7346 | ||
7347 | In the TYPENAME case, DECLARATOR is really an absolute declarator. | |
7348 | It may also be so in the PARM case, for a prototype where the | |
7349 | argument type is specified but not the name. | |
7350 | ||
7351 | This function is where the complicated C meanings of `static' | |
7352 | and `extern' are interpreted. | |
7353 | ||
7354 | For C++, if there is any monkey business to do, the function which | |
7355 | calls this one must do it, i.e., prepending instance variables, | |
7356 | renaming overloaded function names, etc. | |
7357 | ||
7358 | Note that for this C++, it is an error to define a method within a class | |
7359 | which does not belong to that class. | |
7360 | ||
7361 | Except in the case where SCOPE_REFs are implicitly known (such as | |
7362 | methods within a class being redundantly qualified), | |
7363 | declarations which involve SCOPE_REFs are returned as SCOPE_REFs | |
7364 | (class_name::decl_name). The caller must also deal with this. | |
7365 | ||
7366 | If a constructor or destructor is seen, and the context is FIELD, | |
7367 | then the type gains the attribute TREE_HAS_x. If such a declaration | |
7368 | is erroneous, NULL_TREE is returned. | |
7369 | ||
7370 | QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member | |
7371 | function, these are the qualifiers to give to the `this' pointer. | |
7372 | ||
7373 | May return void_type_node if the declarator turned out to be a friend. | |
7374 | See grokfield for details. */ | |
7375 | ||
7376 | enum return_types { return_normal, return_ctor, return_dtor, return_conversion }; | |
7377 | ||
7378 | tree | |
f30432d7 | 7379 | grokdeclarator (declarator, declspecs, decl_context, initialized, raises, attrlist) |
8d08fdba MS |
7380 | tree declspecs; |
7381 | tree declarator; | |
7382 | enum decl_context decl_context; | |
7383 | int initialized; | |
f30432d7 | 7384 | tree raises, attrlist; |
8d08fdba MS |
7385 | { |
7386 | RID_BIT_TYPE specbits; | |
7387 | int nclasses = 0; | |
7388 | tree spec; | |
7389 | tree type = NULL_TREE; | |
7390 | int longlong = 0; | |
7391 | int constp; | |
7392 | int volatilep; | |
db5ae43f | 7393 | int virtualp, explicitp, friendp, inlinep, staticp; |
8d08fdba MS |
7394 | int explicit_int = 0; |
7395 | int explicit_char = 0; | |
7396 | int opaque_typedef = 0; | |
7397 | tree typedef_decl = NULL_TREE; | |
7398 | char *name; | |
7399 | tree typedef_type = NULL_TREE; | |
7400 | int funcdef_flag = 0; | |
7401 | enum tree_code innermost_code = ERROR_MARK; | |
7402 | int bitfield = 0; | |
5566b478 MS |
7403 | #if 0 |
7404 | /* See the code below that used this. */ | |
f6abb50a | 7405 | tree decl_machine_attr = NULL_TREE; |
5566b478 | 7406 | #endif |
8d08fdba MS |
7407 | /* Set this to error_mark_node for FIELD_DECLs we could not handle properly. |
7408 | All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */ | |
7409 | tree init = NULL_TREE; | |
7410 | ||
7411 | /* Keep track of what sort of function is being processed | |
7412 | so that we can warn about default return values, or explicit | |
7413 | return values which do not match prescribed defaults. */ | |
7414 | enum return_types return_type = return_normal; | |
7415 | ||
7416 | tree dname = NULL_TREE; | |
7417 | tree ctype = current_class_type; | |
7418 | tree ctor_return_type = NULL_TREE; | |
7419 | enum overload_flags flags = NO_SPECIAL; | |
8d08fdba MS |
7420 | tree quals = NULL_TREE; |
7421 | ||
7422 | RIDBIT_RESET_ALL (specbits); | |
7423 | if (decl_context == FUNCDEF) | |
7424 | funcdef_flag = 1, decl_context = NORMAL; | |
7425 | else if (decl_context == MEMFUNCDEF) | |
7426 | funcdef_flag = -1, decl_context = FIELD; | |
7427 | else if (decl_context == BITFIELD) | |
7428 | bitfield = 1, decl_context = FIELD; | |
7429 | ||
7430 | if (flag_traditional && allocation_temporary_p ()) | |
7431 | end_temporary_allocation (); | |
7432 | ||
7433 | /* Look inside a declarator for the name being declared | |
7434 | and get it as a string, for an error message. */ | |
7435 | { | |
be99da77 MS |
7436 | tree *next = &declarator; |
7437 | register tree decl; | |
8d08fdba MS |
7438 | name = NULL; |
7439 | ||
be99da77 MS |
7440 | while (next && *next) |
7441 | { | |
7442 | decl = *next; | |
7443 | switch (TREE_CODE (decl)) | |
8d08fdba | 7444 | { |
be99da77 MS |
7445 | case COND_EXPR: |
7446 | ctype = NULL_TREE; | |
7447 | next = &TREE_OPERAND (decl, 0); | |
7448 | break; | |
8d08fdba | 7449 | |
be99da77 | 7450 | case BIT_NOT_EXPR: /* for C++ destructors! */ |
8d08fdba | 7451 | { |
be99da77 MS |
7452 | tree name = TREE_OPERAND (decl, 0); |
7453 | tree rename = NULL_TREE; | |
7454 | ||
7455 | my_friendly_assert (flags == NO_SPECIAL, 152); | |
7456 | flags = DTOR_FLAG; | |
7457 | return_type = return_dtor; | |
5566b478 MS |
7458 | if (TREE_CODE (name) == TYPE_DECL) |
7459 | TREE_OPERAND (decl, 0) = name = constructor_name (name); | |
be99da77 MS |
7460 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153); |
7461 | if (ctype == NULL_TREE) | |
7462 | { | |
7463 | if (current_class_type == NULL_TREE) | |
7464 | { | |
7465 | error ("destructors must be member functions"); | |
7466 | flags = NO_SPECIAL; | |
7467 | } | |
7468 | else | |
7469 | { | |
7470 | tree t = constructor_name (current_class_name); | |
7471 | if (t != name) | |
7472 | rename = t; | |
7473 | } | |
7474 | } | |
8d08fdba | 7475 | else |
be99da77 MS |
7476 | { |
7477 | tree t = constructor_name (ctype); | |
7478 | if (t != name) | |
7479 | rename = t; | |
7480 | } | |
51c184be | 7481 | |
be99da77 | 7482 | if (rename) |
39211cd5 | 7483 | { |
5566b478 MS |
7484 | cp_error ("destructor `%T' must match class name `%T'", |
7485 | name, rename); | |
be99da77 | 7486 | TREE_OPERAND (decl, 0) = rename; |
39211cd5 | 7487 | } |
be99da77 | 7488 | next = &name; |
51c184be | 7489 | } |
be99da77 | 7490 | break; |
8d08fdba | 7491 | |
be99da77 MS |
7492 | case ADDR_EXPR: /* C++ reference declaration */ |
7493 | /* fall through */ | |
7494 | case ARRAY_REF: | |
7495 | case INDIRECT_REF: | |
7496 | ctype = NULL_TREE; | |
7497 | innermost_code = TREE_CODE (decl); | |
7498 | next = &TREE_OPERAND (decl, 0); | |
7499 | break; | |
8d08fdba | 7500 | |
be99da77 MS |
7501 | case CALL_EXPR: |
7502 | if (parmlist_is_exprlist (TREE_OPERAND (decl, 1))) | |
8d08fdba | 7503 | { |
be99da77 MS |
7504 | /* This is actually a variable declaration using constructor |
7505 | syntax. We need to call start_decl and cp_finish_decl so we | |
7506 | can get the variable initialized... */ | |
7507 | ||
7508 | *next = TREE_OPERAND (decl, 0); | |
7509 | init = TREE_OPERAND (decl, 1); | |
7510 | ||
7511 | decl = start_decl (declarator, declspecs, 1, NULL_TREE); | |
7512 | finish_decl (decl, init, NULL_TREE); | |
7513 | return 0; | |
8d08fdba | 7514 | } |
be99da77 MS |
7515 | innermost_code = TREE_CODE (decl); |
7516 | if (decl_context == FIELD && ctype == NULL_TREE) | |
7517 | ctype = current_class_type; | |
45537677 MS |
7518 | if (ctype |
7519 | && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL | |
7520 | && ((DECL_NAME (TREE_OPERAND (decl, 0)) | |
7521 | == constructor_name_full (ctype)) | |
7522 | || (DECL_NAME (TREE_OPERAND (decl, 0)) | |
7523 | == constructor_name (ctype))))) | |
be99da77 MS |
7524 | TREE_OPERAND (decl, 0) = constructor_name (ctype); |
7525 | next = &TREE_OPERAND (decl, 0); | |
7526 | decl = *next; | |
7527 | if (ctype != NULL_TREE | |
7528 | && decl != NULL_TREE && flags != DTOR_FLAG | |
7529 | && decl == constructor_name (ctype)) | |
8d08fdba | 7530 | { |
be99da77 MS |
7531 | return_type = return_ctor; |
7532 | ctor_return_type = ctype; | |
8d08fdba | 7533 | } |
be99da77 MS |
7534 | ctype = NULL_TREE; |
7535 | break; | |
7536 | ||
7537 | case IDENTIFIER_NODE: | |
7538 | dname = decl; | |
7539 | next = 0; | |
7540 | ||
7541 | if (is_rid (dname)) | |
8d08fdba | 7542 | { |
be99da77 MS |
7543 | cp_error ("declarator-id missing; using reserved word `%D'", |
7544 | dname); | |
7545 | name = IDENTIFIER_POINTER (dname); | |
8d08fdba | 7546 | } |
be99da77 MS |
7547 | if (! IDENTIFIER_OPNAME_P (dname) |
7548 | /* Linux headers use '__op'. Arrgh. */ | |
7549 | || IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname)) | |
7550 | name = IDENTIFIER_POINTER (dname); | |
8d08fdba MS |
7551 | else |
7552 | { | |
be99da77 | 7553 | if (IDENTIFIER_TYPENAME_P (dname)) |
8d08fdba | 7554 | { |
be99da77 MS |
7555 | my_friendly_assert (flags == NO_SPECIAL, 154); |
7556 | flags = TYPENAME_FLAG; | |
7557 | ctor_return_type = TREE_TYPE (dname); | |
7558 | return_type = return_conversion; | |
8d08fdba | 7559 | } |
be99da77 | 7560 | name = operator_name_string (dname); |
8d08fdba | 7561 | } |
be99da77 | 7562 | break; |
8d08fdba | 7563 | |
be99da77 MS |
7564 | /* C++ extension */ |
7565 | case SCOPE_REF: | |
7566 | { | |
7567 | /* Perform error checking, and decide on a ctype. */ | |
7568 | tree cname = TREE_OPERAND (decl, 0); | |
7569 | if (cname == NULL_TREE) | |
7570 | ctype = NULL_TREE; | |
7571 | else if (! is_aggr_type (cname, 1)) | |
7572 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
7573 | /* Must test TREE_OPERAND (decl, 1), in case user gives | |
7574 | us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */ | |
7575 | else if (TREE_OPERAND (decl, 1) | |
7576 | && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF) | |
7577 | ctype = cname; | |
5566b478 MS |
7578 | else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM) |
7579 | { | |
7580 | cp_error ("`%T::%D' is not a valid declarator", cname, | |
7581 | TREE_OPERAND (decl, 1)); | |
7582 | cp_error (" perhaps you want `typename %T::%D' to make it a type", | |
7583 | cname, TREE_OPERAND (decl, 1)); | |
7584 | return void_type_node; | |
7585 | } | |
be99da77 MS |
7586 | else if (ctype == NULL_TREE) |
7587 | ctype = cname; | |
7588 | else if (TREE_COMPLEXITY (decl) == current_class_depth) | |
7589 | TREE_OPERAND (decl, 0) = ctype; | |
7590 | else | |
7591 | { | |
7592 | if (! UNIQUELY_DERIVED_FROM_P (cname, ctype)) | |
7593 | { | |
7594 | cp_error ("type `%T' is not derived from type `%T'", | |
7595 | cname, ctype); | |
7596 | TREE_OPERAND (decl, 0) = NULL_TREE; | |
7597 | } | |
7598 | else | |
7599 | ctype = cname; | |
7600 | } | |
7601 | ||
7602 | if (ctype | |
7603 | && TREE_OPERAND (decl, 1) == constructor_name_full (ctype)) | |
7604 | TREE_OPERAND (decl, 1) = constructor_name (ctype); | |
7605 | next = &TREE_OPERAND (decl, 1); | |
7606 | decl = *next; | |
7607 | if (ctype) | |
7608 | { | |
7609 | if (TREE_CODE (decl) == IDENTIFIER_NODE | |
7610 | && constructor_name (ctype) == decl) | |
7611 | { | |
7612 | return_type = return_ctor; | |
7613 | ctor_return_type = ctype; | |
7614 | } | |
7615 | else if (TREE_CODE (decl) == BIT_NOT_EXPR | |
7616 | && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE | |
7617 | && (constructor_name (ctype) == TREE_OPERAND (decl, 0) | |
7618 | || constructor_name_full (ctype) == TREE_OPERAND (decl, 0))) | |
7619 | { | |
7620 | return_type = return_dtor; | |
7621 | ctor_return_type = ctype; | |
7622 | flags = DTOR_FLAG; | |
7623 | TREE_OPERAND (decl, 0) = constructor_name (ctype); | |
7624 | next = &TREE_OPERAND (decl, 0); | |
7625 | } | |
7626 | } | |
7627 | } | |
7628 | break; | |
7629 | ||
7630 | case ERROR_MARK: | |
7631 | next = 0; | |
7632 | break; | |
7633 | ||
45537677 MS |
7634 | case TYPE_DECL: |
7635 | /* Parse error puts this typespec where | |
7636 | a declarator should go. */ | |
7637 | cp_error ("`%T' specified as declarator-id", DECL_NAME (decl)); | |
7638 | if (TREE_TYPE (decl) == current_class_type) | |
7639 | cp_error (" perhaps you want `%T' for a constructor", | |
7640 | current_class_name); | |
7641 | dname = DECL_NAME (decl); | |
7642 | name = IDENTIFIER_POINTER (dname); | |
7643 | ||
7644 | /* Avoid giving two errors for this. */ | |
7645 | IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE; | |
7646 | ||
7647 | declspecs = temp_tree_cons (NULL_TREE, integer_type_node, | |
7648 | declspecs); | |
7649 | *next = dname; | |
7650 | next = 0; | |
7651 | break; | |
7652 | ||
be99da77 | 7653 | default: |
be99da77 MS |
7654 | cp_compiler_error ("`%D' as declarator", decl); |
7655 | return 0; /* We used to do a 155 abort here. */ | |
8d08fdba | 7656 | } |
be99da77 | 7657 | } |
8d08fdba MS |
7658 | if (name == NULL) |
7659 | name = "type name"; | |
7660 | } | |
7661 | ||
7662 | /* A function definition's declarator must have the form of | |
7663 | a function declarator. */ | |
7664 | ||
7665 | if (funcdef_flag && innermost_code != CALL_EXPR) | |
7666 | return 0; | |
7667 | ||
e1cd6e56 MS |
7668 | if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG) |
7669 | && innermost_code != CALL_EXPR | |
7670 | && ! (ctype && declspecs == NULL_TREE)) | |
7671 | { | |
7672 | cp_error ("declaration of `%D' as non-function", dname); | |
7673 | return void_type_node; | |
7674 | } | |
7675 | ||
8d08fdba MS |
7676 | /* Anything declared one level down from the top level |
7677 | must be one of the parameters of a function | |
7678 | (because the body is at least two levels down). */ | |
7679 | ||
7680 | /* This heuristic cannot be applied to C++ nodes! Fixed, however, | |
7681 | by not allowing C++ class definitions to specify their parameters | |
7682 | with xdecls (must be spec.d in the parmlist). | |
7683 | ||
7684 | Since we now wait to push a class scope until we are sure that | |
7685 | we are in a legitimate method context, we must set oldcname | |
a9aedbc2 MS |
7686 | explicitly (since current_class_name is not yet alive). |
7687 | ||
7688 | We also want to avoid calling this a PARM if it is in a namespace. */ | |
8d08fdba | 7689 | |
5566b478 MS |
7690 | if (decl_context == NORMAL && ! namespace_bindings_p () |
7691 | && ! pseudo_global_level_p ()) | |
a9aedbc2 MS |
7692 | { |
7693 | struct binding_level *b = current_binding_level; | |
7694 | current_binding_level = b->level_chain; | |
7695 | if (current_binding_level != 0 && toplevel_bindings_p ()) | |
7696 | decl_context = PARM; | |
7697 | current_binding_level = b; | |
7698 | } | |
8d08fdba MS |
7699 | |
7700 | /* Look through the decl specs and record which ones appear. | |
7701 | Some typespecs are defined as built-in typenames. | |
7702 | Others, the ones that are modifiers of other types, | |
7703 | are represented by bits in SPECBITS: set the bits for | |
7704 | the modifiers that appear. Storage class keywords are also in SPECBITS. | |
7705 | ||
7706 | If there is a typedef name or a type, store the type in TYPE. | |
7707 | This includes builtin typedefs such as `int'. | |
7708 | ||
7709 | Set EXPLICIT_INT if the type is `int' or `char' and did not | |
7710 | come from a user typedef. | |
7711 | ||
7712 | Set LONGLONG if `long' is mentioned twice. | |
7713 | ||
7714 | For C++, constructors and destructors have their own fast treatment. */ | |
7715 | ||
7716 | for (spec = declspecs; spec; spec = TREE_CHAIN (spec)) | |
7717 | { | |
7718 | register int i; | |
7719 | register tree id; | |
7720 | ||
7721 | /* Certain parse errors slip through. For example, | |
7722 | `int class;' is not caught by the parser. Try | |
7723 | weakly to recover here. */ | |
7724 | if (TREE_CODE (spec) != TREE_LIST) | |
7725 | return 0; | |
7726 | ||
7727 | id = TREE_VALUE (spec); | |
7728 | ||
7729 | if (TREE_CODE (id) == IDENTIFIER_NODE) | |
7730 | { | |
a3203465 MS |
7731 | if (id == ridpointers[(int) RID_INT] |
7732 | || id == ridpointers[(int) RID_CHAR] | |
7733 | || id == ridpointers[(int) RID_BOOL] | |
7734 | || id == ridpointers[(int) RID_WCHAR]) | |
8d08fdba MS |
7735 | { |
7736 | if (type) | |
8ccc31eb MS |
7737 | { |
7738 | if (id == ridpointers[(int) RID_BOOL]) | |
7739 | error ("`bool' is now a keyword"); | |
7740 | else | |
7741 | cp_error ("extraneous `%T' ignored", id); | |
7742 | } | |
8d08fdba MS |
7743 | else |
7744 | { | |
a3203465 MS |
7745 | if (id == ridpointers[(int) RID_INT]) |
7746 | explicit_int = 1; | |
7747 | else if (id == ridpointers[(int) RID_CHAR]) | |
7748 | explicit_char = 1; | |
8d08fdba MS |
7749 | type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id)); |
7750 | } | |
7751 | goto found; | |
7752 | } | |
7753 | /* C++ aggregate types. */ | |
7754 | if (IDENTIFIER_HAS_TYPE_VALUE (id)) | |
7755 | { | |
7756 | if (type) | |
7757 | cp_error ("multiple declarations `%T' and `%T'", type, id); | |
7758 | else | |
7759 | type = IDENTIFIER_TYPE_VALUE (id); | |
7760 | goto found; | |
7761 | } | |
7762 | ||
f376e137 | 7763 | for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++) |
8d08fdba MS |
7764 | { |
7765 | if (ridpointers[i] == id) | |
7766 | { | |
7767 | if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits)) | |
7768 | { | |
e1cd6e56 MS |
7769 | if (pedantic && ! in_system_header) |
7770 | pedwarn ("ANSI C++ does not support `long long'"); | |
a0a33927 MS |
7771 | else if (longlong) |
7772 | error ("`long long long' is too long for GCC"); | |
8d08fdba MS |
7773 | else |
7774 | longlong = 1; | |
7775 | } | |
7776 | else if (RIDBIT_SETP (i, specbits)) | |
a0a33927 | 7777 | pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id)); |
8d08fdba MS |
7778 | RIDBIT_SET (i, specbits); |
7779 | goto found; | |
7780 | } | |
7781 | } | |
7782 | } | |
45537677 MS |
7783 | /* C++ aggregate types. */ |
7784 | else if (TREE_CODE (id) == TYPE_DECL) | |
7785 | { | |
7786 | if (type) | |
7787 | cp_error ("multiple declarations `%T' and `%T'", type, | |
7788 | TREE_TYPE (id)); | |
7789 | else | |
5566b478 MS |
7790 | { |
7791 | type = TREE_TYPE (id); | |
7792 | TREE_VALUE (spec) = type; | |
7793 | } | |
45537677 MS |
7794 | goto found; |
7795 | } | |
8d08fdba MS |
7796 | if (type) |
7797 | error ("two or more data types in declaration of `%s'", name); | |
7798 | else if (TREE_CODE (id) == IDENTIFIER_NODE) | |
7799 | { | |
7800 | register tree t = lookup_name (id, 1); | |
7801 | if (!t || TREE_CODE (t) != TYPE_DECL) | |
7802 | error ("`%s' fails to be a typedef or built in type", | |
7803 | IDENTIFIER_POINTER (id)); | |
7804 | else | |
7805 | { | |
7806 | type = TREE_TYPE (t); | |
5566b478 MS |
7807 | #if 0 |
7808 | /* See the code below that used this. */ | |
f6abb50a | 7809 | decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id); |
5566b478 | 7810 | #endif |
8d08fdba MS |
7811 | typedef_decl = t; |
7812 | } | |
7813 | } | |
7814 | else if (TREE_CODE (id) != ERROR_MARK) | |
7815 | /* Can't change CLASS nodes into RECORD nodes here! */ | |
7816 | type = id; | |
7817 | ||
7818 | found: ; | |
7819 | } | |
7820 | ||
7821 | typedef_type = type; | |
7822 | ||
7823 | /* No type at all: default to `int', and set EXPLICIT_INT | |
7824 | because it was not a user-defined typedef. | |
7825 | Except when we have a `typedef' inside a signature, in | |
7826 | which case the type defaults to `unknown type' and is | |
7827 | instantiated when assigning to a signature pointer or ref. */ | |
7828 | ||
a3203465 MS |
7829 | if (type == NULL_TREE |
7830 | && (RIDBIT_SETP (RID_SIGNED, specbits) | |
7831 | || RIDBIT_SETP (RID_UNSIGNED, specbits) | |
7832 | || RIDBIT_SETP (RID_LONG, specbits) | |
7833 | || RIDBIT_SETP (RID_SHORT, specbits))) | |
7834 | { | |
7835 | /* These imply 'int'. */ | |
7836 | type = integer_type_node; | |
7837 | explicit_int = 1; | |
7838 | } | |
7839 | ||
8d08fdba MS |
7840 | if (type == NULL_TREE) |
7841 | { | |
7842 | explicit_int = -1; | |
7843 | if (return_type == return_dtor) | |
7844 | type = void_type_node; | |
7845 | else if (return_type == return_ctor) | |
f30432d7 | 7846 | type = build_pointer_type (ctor_return_type); |
51c184be MS |
7847 | else if (return_type == return_conversion) |
7848 | type = ctor_return_type; | |
8d08fdba MS |
7849 | else if (current_class_type |
7850 | && IS_SIGNATURE (current_class_type) | |
7851 | && (RIDBIT_SETP (RID_TYPEDEF, specbits) | |
7852 | || SIGNATURE_GROKKING_TYPEDEF (current_class_type)) | |
7853 | && (decl_context == FIELD || decl_context == NORMAL)) | |
7854 | { | |
7855 | explicit_int = 0; | |
7856 | opaque_typedef = 1; | |
7857 | type = copy_node (opaque_type_node); | |
7858 | } | |
7859 | else | |
7860 | { | |
a28e3c7f MS |
7861 | if (funcdef_flag) |
7862 | { | |
7863 | if (warn_return_type | |
a3203465 | 7864 | && return_type == return_normal) |
a28e3c7f MS |
7865 | /* Save warning until we know what is really going on. */ |
7866 | warn_about_return_type = 1; | |
7867 | } | |
a3203465 MS |
7868 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
7869 | pedwarn ("ANSI C++ forbids typedef which does not specify a type"); | |
a28e3c7f MS |
7870 | else if (declspecs == NULL_TREE && |
7871 | (innermost_code != CALL_EXPR || pedantic)) | |
7872 | cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class", | |
7873 | dname); | |
8d08fdba MS |
7874 | type = integer_type_node; |
7875 | } | |
7876 | } | |
7877 | else if (return_type == return_dtor) | |
7878 | { | |
7879 | error ("return type specification for destructor invalid"); | |
7880 | type = void_type_node; | |
7881 | } | |
7882 | else if (return_type == return_ctor) | |
7883 | { | |
7884 | error ("return type specification for constructor invalid"); | |
f30432d7 | 7885 | type = build_pointer_type (ctor_return_type); |
8d08fdba | 7886 | } |
51c184be MS |
7887 | else if (return_type == return_conversion) |
7888 | { | |
e1cd6e56 | 7889 | if (comptypes (type, ctor_return_type, 1) == 0) |
51c184be MS |
7890 | cp_error ("operator `%T' declared to return `%T'", |
7891 | ctor_return_type, type); | |
7892 | else | |
7893 | cp_pedwarn ("return type specified for `operator %T'", | |
7894 | ctor_return_type); | |
7895 | ||
7896 | type = ctor_return_type; | |
7897 | } | |
8d08fdba MS |
7898 | |
7899 | ctype = NULL_TREE; | |
7900 | ||
7901 | /* Now process the modifiers that were specified | |
7902 | and check for invalid combinations. */ | |
7903 | ||
7904 | /* Long double is a special combination. */ | |
7905 | ||
7906 | if (RIDBIT_SETP (RID_LONG, specbits) | |
7907 | && TYPE_MAIN_VARIANT (type) == double_type_node) | |
7908 | { | |
7909 | RIDBIT_RESET (RID_LONG, specbits); | |
7910 | type = build_type_variant (long_double_type_node, TYPE_READONLY (type), | |
7911 | TYPE_VOLATILE (type)); | |
7912 | } | |
7913 | ||
7914 | /* Check all other uses of type modifiers. */ | |
7915 | ||
7916 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
7917 | || RIDBIT_SETP (RID_SIGNED, specbits) | |
7918 | || RIDBIT_SETP (RID_LONG, specbits) | |
7919 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
7920 | { | |
7921 | int ok = 0; | |
7922 | ||
7923 | if (TREE_CODE (type) == REAL_TYPE) | |
7924 | error ("short, signed or unsigned invalid for `%s'", name); | |
b7484fbe | 7925 | else if (TREE_CODE (type) != INTEGER_TYPE) |
8d08fdba MS |
7926 | error ("long, short, signed or unsigned invalid for `%s'", name); |
7927 | else if (RIDBIT_SETP (RID_LONG, specbits) | |
7928 | && RIDBIT_SETP (RID_SHORT, specbits)) | |
7929 | error ("long and short specified together for `%s'", name); | |
7930 | else if ((RIDBIT_SETP (RID_LONG, specbits) | |
7931 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
7932 | && explicit_char) | |
7933 | error ("long or short specified with char for `%s'", name); | |
7934 | else if ((RIDBIT_SETP (RID_LONG, specbits) | |
7935 | || RIDBIT_SETP (RID_SHORT, specbits)) | |
7936 | && TREE_CODE (type) == REAL_TYPE) | |
7937 | error ("long or short specified with floating type for `%s'", name); | |
7938 | else if (RIDBIT_SETP (RID_SIGNED, specbits) | |
7939 | && RIDBIT_SETP (RID_UNSIGNED, specbits)) | |
7940 | error ("signed and unsigned given together for `%s'", name); | |
7941 | else | |
7942 | { | |
7943 | ok = 1; | |
7944 | if (!explicit_int && !explicit_char && pedantic) | |
7945 | { | |
7946 | pedwarn ("long, short, signed or unsigned used invalidly for `%s'", | |
7947 | name); | |
7948 | if (flag_pedantic_errors) | |
7949 | ok = 0; | |
7950 | } | |
7951 | } | |
7952 | ||
7953 | /* Discard the type modifiers if they are invalid. */ | |
7954 | if (! ok) | |
7955 | { | |
7956 | RIDBIT_RESET (RID_UNSIGNED, specbits); | |
7957 | RIDBIT_RESET (RID_SIGNED, specbits); | |
7958 | RIDBIT_RESET (RID_LONG, specbits); | |
7959 | RIDBIT_RESET (RID_SHORT, specbits); | |
7960 | longlong = 0; | |
7961 | } | |
7962 | } | |
7963 | ||
7964 | /* Decide whether an integer type is signed or not. | |
7965 | Optionally treat bitfields as signed by default. */ | |
7966 | if (RIDBIT_SETP (RID_UNSIGNED, specbits) | |
7967 | /* Traditionally, all bitfields are unsigned. */ | |
7968 | || (bitfield && flag_traditional) | |
7969 | || (bitfield && ! flag_signed_bitfields | |
7970 | && (explicit_int || explicit_char | |
7971 | /* A typedef for plain `int' without `signed' | |
7972 | can be controlled just like plain `int'. */ | |
7973 | || ! (typedef_decl != NULL_TREE | |
7974 | && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))) | |
7975 | && TREE_CODE (type) != ENUMERAL_TYPE | |
7976 | && RIDBIT_NOTSETP (RID_SIGNED, specbits))) | |
7977 | { | |
7978 | if (longlong) | |
7979 | type = long_long_unsigned_type_node; | |
7980 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
7981 | type = long_unsigned_type_node; | |
7982 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
7983 | type = short_unsigned_type_node; | |
7984 | else if (type == char_type_node) | |
7985 | type = unsigned_char_type_node; | |
7986 | else if (typedef_decl) | |
7987 | type = unsigned_type (type); | |
7988 | else | |
7989 | type = unsigned_type_node; | |
7990 | } | |
7991 | else if (RIDBIT_SETP (RID_SIGNED, specbits) | |
7992 | && type == char_type_node) | |
7993 | type = signed_char_type_node; | |
7994 | else if (longlong) | |
7995 | type = long_long_integer_type_node; | |
7996 | else if (RIDBIT_SETP (RID_LONG, specbits)) | |
7997 | type = long_integer_type_node; | |
7998 | else if (RIDBIT_SETP (RID_SHORT, specbits)) | |
7999 | type = short_integer_type_node; | |
8000 | ||
8001 | /* Set CONSTP if this declaration is `const', whether by | |
8002 | explicit specification or via a typedef. | |
8003 | Likewise for VOLATILEP. */ | |
8004 | ||
8005 | constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type); | |
8006 | volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type); | |
8007 | staticp = 0; | |
8008 | inlinep = !! RIDBIT_SETP (RID_INLINE, specbits); | |
8d08fdba | 8009 | virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits); |
db5ae43f MS |
8010 | RIDBIT_RESET (RID_VIRTUAL, specbits); |
8011 | explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0; | |
8012 | RIDBIT_RESET (RID_EXPLICIT, specbits); | |
8d08fdba | 8013 | |
8d08fdba MS |
8014 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
8015 | staticp = 1 + (decl_context == FIELD); | |
8016 | ||
8017 | if (virtualp && staticp == 2) | |
8018 | { | |
8019 | cp_error ("member `%D' cannot be declared both virtual and static", | |
8020 | dname); | |
8021 | staticp = 0; | |
8022 | } | |
8023 | friendp = RIDBIT_SETP (RID_FRIEND, specbits); | |
8d08fdba MS |
8024 | RIDBIT_RESET (RID_FRIEND, specbits); |
8025 | ||
8026 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) | |
8027 | { | |
8028 | if (decl_context == PARM) | |
8029 | { | |
db5ae43f | 8030 | error ("non-member `%s' cannot be declared `mutable'", name); |
8d08fdba MS |
8031 | RIDBIT_RESET (RID_MUTABLE, specbits); |
8032 | } | |
8033 | else if (friendp || decl_context == TYPENAME) | |
8034 | { | |
db5ae43f | 8035 | error ("non-object member `%s' cannot be declared `mutable'", name); |
8d08fdba MS |
8036 | RIDBIT_RESET (RID_MUTABLE, specbits); |
8037 | } | |
8d08fdba MS |
8038 | } |
8039 | ||
8040 | /* Warn if two storage classes are given. Default to `auto'. */ | |
8041 | ||
8042 | if (RIDBIT_ANY_SET (specbits)) | |
8043 | { | |
8044 | if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++; | |
8045 | if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++; | |
8046 | if (decl_context == PARM && nclasses > 0) | |
8047 | error ("storage class specifiers invalid in parameter declarations"); | |
8048 | if (RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
8049 | { | |
8050 | if (decl_context == PARM) | |
8051 | error ("typedef declaration invalid in parameter declaration"); | |
8052 | nclasses++; | |
8053 | } | |
8054 | if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++; | |
8055 | if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++; | |
8056 | } | |
8057 | ||
8058 | /* Give error if `virtual' is used outside of class declaration. */ | |
b7484fbe MS |
8059 | if (virtualp |
8060 | && (current_class_name == NULL_TREE || decl_context != FIELD)) | |
8d08fdba MS |
8061 | { |
8062 | error ("virtual outside class declaration"); | |
8063 | virtualp = 0; | |
8064 | } | |
8065 | if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits)) | |
8066 | { | |
8067 | error ("only members can be declared mutable"); | |
8068 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
8069 | } | |
8070 | ||
8071 | /* Static anonymous unions are dealt with here. */ | |
8072 | if (staticp && decl_context == TYPENAME | |
8073 | && TREE_CODE (declspecs) == TREE_LIST | |
8074 | && TREE_CODE (TREE_VALUE (declspecs)) == UNION_TYPE | |
8075 | && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs)))) | |
8076 | decl_context = FIELD; | |
8077 | ||
8078 | /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual' | |
8079 | is used in a signature member function declaration. */ | |
8080 | if (decl_context == FIELD | |
8081 | && IS_SIGNATURE (current_class_type) | |
8082 | && RIDBIT_NOTSETP(RID_TYPEDEF, specbits) | |
8083 | && !SIGNATURE_GROKKING_TYPEDEF (current_class_type)) | |
8084 | { | |
8085 | if (constp) | |
8086 | { | |
8087 | error ("`const' specified for signature member function `%s'", name); | |
8088 | constp = 0; | |
8089 | } | |
8090 | if (volatilep) | |
8091 | { | |
a28e3c7f MS |
8092 | error ("`volatile' specified for signature member function `%s'", |
8093 | name); | |
8d08fdba MS |
8094 | volatilep = 0; |
8095 | } | |
8096 | if (inlinep) | |
8097 | { | |
8098 | error ("`inline' specified for signature member function `%s'", name); | |
8099 | /* Later, we'll make signature member functions inline. */ | |
8100 | inlinep = 0; | |
8101 | } | |
8102 | if (friendp) | |
8103 | { | |
8104 | error ("`friend' declaration in signature definition"); | |
8105 | friendp = 0; | |
8106 | } | |
8107 | if (virtualp) | |
8108 | { | |
a28e3c7f MS |
8109 | error ("`virtual' specified for signature member function `%s'", |
8110 | name); | |
8d08fdba MS |
8111 | /* Later, we'll make signature member functions virtual. */ |
8112 | virtualp = 0; | |
8113 | } | |
8114 | } | |
8115 | ||
8116 | /* Warn about storage classes that are invalid for certain | |
8117 | kinds of declarations (parameters, typenames, etc.). */ | |
8118 | ||
8119 | if (nclasses > 1) | |
8120 | error ("multiple storage classes in declaration of `%s'", name); | |
8121 | else if (decl_context != NORMAL && nclasses > 0) | |
8122 | { | |
db5ae43f | 8123 | if ((decl_context == PARM || decl_context == CATCHPARM) |
8d08fdba MS |
8124 | && (RIDBIT_SETP (RID_REGISTER, specbits) |
8125 | || RIDBIT_SETP (RID_AUTO, specbits))) | |
8126 | ; | |
8127 | else if (decl_context == FIELD | |
8128 | && RIDBIT_SETP (RID_TYPEDEF, specbits)) | |
8129 | { | |
8130 | /* Processing a typedef declaration nested within a class type | |
8131 | definition. */ | |
8132 | register tree scanner; | |
8133 | register tree previous_declspec; | |
8134 | tree loc_typedecl; | |
8135 | ||
8136 | if (initialized) | |
8137 | error ("typedef declaration includes an initializer"); | |
8138 | ||
8139 | /* To process a class-local typedef declaration, we descend down | |
51c184be MS |
8140 | the chain of declspecs looking for the `typedef' spec. When |
8141 | we find it, we replace it with `static', and then recursively | |
8142 | call `grokdeclarator' with the original declarator and with | |
8143 | the newly adjusted declspecs. This call should return a | |
8144 | FIELD_DECL node with the TREE_TYPE (and other parts) set | |
8d08fdba MS |
8145 | appropriately. We can then just change the TREE_CODE on that |
8146 | from FIELD_DECL to TYPE_DECL and we're done. */ | |
8147 | ||
8148 | for (previous_declspec = NULL_TREE, scanner = declspecs; | |
8149 | scanner; | |
8150 | previous_declspec = scanner, scanner = TREE_CHAIN (scanner)) | |
8151 | { | |
8152 | if (TREE_VALUE (scanner) == ridpointers[(int) RID_TYPEDEF]) | |
8153 | break; | |
8154 | } | |
51c184be | 8155 | |
a292b002 MS |
8156 | if (previous_declspec) |
8157 | TREE_CHAIN (previous_declspec) = TREE_CHAIN (scanner); | |
8d08fdba | 8158 | else |
a292b002 MS |
8159 | declspecs = TREE_CHAIN (scanner); |
8160 | ||
8161 | declspecs = tree_cons (NULL_TREE, ridpointers[(int) RID_STATIC], | |
8162 | declspecs); | |
51c184be | 8163 | |
8d08fdba MS |
8164 | /* In the recursive call to grokdeclarator we need to know |
8165 | whether we are working on a signature-local typedef. */ | |
8166 | if (IS_SIGNATURE (current_class_type)) | |
8167 | SIGNATURE_GROKKING_TYPEDEF (current_class_type) = 1; | |
8168 | ||
8169 | loc_typedecl = | |
f30432d7 | 8170 | grokdeclarator (declarator, declspecs, FIELD, 0, NULL_TREE, NULL_TREE); |
a292b002 MS |
8171 | |
8172 | if (previous_declspec) | |
8173 | TREE_CHAIN (previous_declspec) = scanner; | |
8d08fdba MS |
8174 | |
8175 | if (loc_typedecl != error_mark_node) | |
8176 | { | |
8177 | register int i = sizeof (struct lang_decl_flags) / sizeof (int); | |
8178 | register int *pi; | |
8179 | ||
8180 | TREE_SET_CODE (loc_typedecl, TYPE_DECL); | |
a292b002 MS |
8181 | /* This is the same field as DECL_ARGUMENTS, which is set for |
8182 | function typedefs by the above grokdeclarator. */ | |
8183 | DECL_NESTED_TYPENAME (loc_typedecl) = 0; | |
8d08fdba MS |
8184 | |
8185 | pi = (int *) permalloc (sizeof (struct lang_decl_flags)); | |
8186 | while (i > 0) | |
8187 | pi[--i] = 0; | |
8188 | DECL_LANG_SPECIFIC (loc_typedecl) = (struct lang_decl *) pi; | |
8189 | } | |
8190 | ||
8191 | if (IS_SIGNATURE (current_class_type)) | |
8192 | { | |
8193 | SIGNATURE_GROKKING_TYPEDEF (current_class_type) = 0; | |
8194 | if (loc_typedecl != error_mark_node && opaque_typedef) | |
8195 | SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1; | |
8196 | } | |
8197 | ||
8198 | return loc_typedecl; | |
8199 | } | |
8200 | else if (decl_context == FIELD | |
63718c49 GB |
8201 | && (! IS_SIGNATURE (current_class_type) |
8202 | || SIGNATURE_GROKKING_TYPEDEF (current_class_type)) | |
8d08fdba MS |
8203 | /* C++ allows static class elements */ |
8204 | && RIDBIT_SETP (RID_STATIC, specbits)) | |
8205 | /* C++ also allows inlines and signed and unsigned elements, | |
8206 | but in those cases we don't come in here. */ | |
8207 | ; | |
8208 | else | |
8209 | { | |
8210 | if (decl_context == FIELD) | |
8211 | { | |
b7484fbe MS |
8212 | tree tmp = NULL_TREE; |
8213 | register int op = 0; | |
8214 | ||
8215 | if (declarator) | |
8216 | { | |
9e9ff709 MS |
8217 | /* Avoid trying to get an operand off an identifier node. */ |
8218 | if (TREE_CODE (declarator) == IDENTIFIER_NODE) | |
8219 | tmp = declarator; | |
8220 | else | |
8221 | tmp = TREE_OPERAND (declarator, 0); | |
b7484fbe MS |
8222 | op = IDENTIFIER_OPNAME_P (tmp); |
8223 | } | |
8d08fdba MS |
8224 | error ("storage class specified for %s `%s'", |
8225 | IS_SIGNATURE (current_class_type) | |
8226 | ? (op | |
8227 | ? "signature member operator" | |
8228 | : "signature member function") | |
b7484fbe | 8229 | : (op ? "member operator" : "field"), |
8d08fdba MS |
8230 | op ? operator_name_string (tmp) : name); |
8231 | } | |
8232 | else | |
db5ae43f | 8233 | error (((decl_context == PARM || decl_context == CATCHPARM) |
8d08fdba MS |
8234 | ? "storage class specified for parameter `%s'" |
8235 | : "storage class specified for typename"), name); | |
8236 | RIDBIT_RESET (RID_REGISTER, specbits); | |
8237 | RIDBIT_RESET (RID_AUTO, specbits); | |
8238 | RIDBIT_RESET (RID_EXTERN, specbits); | |
8239 | ||
8240 | if (decl_context == FIELD && IS_SIGNATURE (current_class_type)) | |
8241 | { | |
8242 | RIDBIT_RESET (RID_STATIC, specbits); | |
8243 | staticp = 0; | |
8244 | } | |
8245 | } | |
8246 | } | |
8247 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag) | |
8248 | { | |
a9aedbc2 | 8249 | if (toplevel_bindings_p ()) |
8d08fdba | 8250 | { |
59be0cdd | 8251 | /* It's common practice (and completely valid) to have a const |
8d08fdba MS |
8252 | be initialized and declared extern. */ |
8253 | if (! constp) | |
8254 | warning ("`%s' initialized and declared `extern'", name); | |
8255 | } | |
8256 | else | |
8257 | error ("`%s' has both `extern' and initializer", name); | |
8258 | } | |
8259 | else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag | |
a9aedbc2 | 8260 | && ! toplevel_bindings_p ()) |
8d08fdba | 8261 | error ("nested function `%s' declared `extern'", name); |
a9aedbc2 | 8262 | else if (toplevel_bindings_p ()) |
8d08fdba MS |
8263 | { |
8264 | if (RIDBIT_SETP (RID_AUTO, specbits)) | |
8265 | error ("top-level declaration of `%s' specifies `auto'", name); | |
8d08fdba MS |
8266 | } |
8267 | ||
8268 | /* Now figure out the structure of the declarator proper. | |
8269 | Descend through it, creating more complex types, until we reach | |
8270 | the declared identifier (or NULL_TREE, in an absolute declarator). */ | |
8271 | ||
8272 | while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE) | |
8273 | { | |
8274 | /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]), | |
8275 | an INDIRECT_REF (for *...), | |
8276 | a CALL_EXPR (for ...(...)), | |
8277 | an identifier (for the name being declared) | |
8278 | or a null pointer (for the place in an absolute declarator | |
8279 | where the name was omitted). | |
8280 | For the last two cases, we have just exited the loop. | |
8281 | ||
8282 | For C++ it could also be | |
8283 | a SCOPE_REF (for class :: ...). In this case, we have converted | |
8284 | sensible names to types, and those are the values we use to | |
8285 | qualify the member name. | |
8286 | an ADDR_EXPR (for &...), | |
8287 | a BIT_NOT_EXPR (for destructors) | |
8d08fdba MS |
8288 | |
8289 | At this point, TYPE is the type of elements of an array, | |
8290 | or for a function to return, or for a pointer to point to. | |
8291 | After this sequence of ifs, TYPE is the type of the | |
8292 | array or function or pointer, and DECLARATOR has had its | |
8293 | outermost layer removed. */ | |
8294 | ||
8295 | if (TREE_CODE (type) == ERROR_MARK) | |
8296 | { | |
8297 | if (TREE_CODE (declarator) == SCOPE_REF) | |
8298 | declarator = TREE_OPERAND (declarator, 1); | |
8299 | else | |
8300 | declarator = TREE_OPERAND (declarator, 0); | |
8301 | continue; | |
8302 | } | |
8303 | if (quals != NULL_TREE | |
8304 | && (declarator == NULL_TREE | |
8305 | || TREE_CODE (declarator) != SCOPE_REF)) | |
8306 | { | |
8307 | if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE) | |
8308 | ctype = TYPE_METHOD_BASETYPE (type); | |
8309 | if (ctype != NULL_TREE) | |
8310 | { | |
8d08fdba | 8311 | tree dummy = build_decl (TYPE_DECL, NULL_TREE, type); |
8d08fdba MS |
8312 | ctype = grok_method_quals (ctype, dummy, quals); |
8313 | type = TREE_TYPE (dummy); | |
8314 | quals = NULL_TREE; | |
8315 | } | |
8316 | } | |
8317 | switch (TREE_CODE (declarator)) | |
8318 | { | |
8319 | case ARRAY_REF: | |
8320 | { | |
8321 | register tree itype = NULL_TREE; | |
8322 | register tree size = TREE_OPERAND (declarator, 1); | |
b7484fbe MS |
8323 | /* The index is a signed object `sizetype' bits wide. */ |
8324 | tree index_type = signed_type (sizetype); | |
8d08fdba MS |
8325 | |
8326 | declarator = TREE_OPERAND (declarator, 0); | |
8327 | ||
8328 | /* Check for some types that there cannot be arrays of. */ | |
8329 | ||
8330 | if (TYPE_MAIN_VARIANT (type) == void_type_node) | |
8331 | { | |
8332 | cp_error ("declaration of `%D' as array of voids", dname); | |
8333 | type = error_mark_node; | |
8334 | } | |
8335 | ||
8336 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
8337 | { | |
8338 | cp_error ("declaration of `%D' as array of functions", dname); | |
8339 | type = error_mark_node; | |
8340 | } | |
8341 | ||
8342 | /* ARM $8.4.3: Since you can't have a pointer to a reference, | |
8343 | you can't have arrays of references. If we allowed them, | |
59be0cdd | 8344 | then we'd be saying x[i] is valid for an array x, but |
8d08fdba MS |
8345 | then you'd have to ask: what does `*(x + i)' mean? */ |
8346 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
8347 | { | |
8348 | if (decl_context == TYPENAME) | |
8349 | cp_error ("cannot make arrays of references"); | |
8350 | else | |
8351 | cp_error ("declaration of `%D' as array of references", | |
8352 | dname); | |
8353 | type = error_mark_node; | |
8354 | } | |
8355 | ||
8356 | if (TREE_CODE (type) == OFFSET_TYPE) | |
8357 | { | |
8358 | cp_error ("declaration of `%D' as array of data members", | |
8359 | dname); | |
8360 | type = error_mark_node; | |
8361 | } | |
8362 | ||
8363 | if (TREE_CODE (type) == METHOD_TYPE) | |
8364 | { | |
8365 | cp_error ("declaration of `%D' as array of function members", | |
8366 | dname); | |
8367 | type = error_mark_node; | |
8368 | } | |
8369 | ||
8370 | if (size == error_mark_node) | |
8371 | type = error_mark_node; | |
8372 | ||
8373 | if (type == error_mark_node) | |
8374 | continue; | |
8375 | ||
8376 | if (size) | |
8377 | { | |
8378 | /* Must suspend_momentary here because the index | |
8379 | type may need to live until the end of the function. | |
8380 | For example, it is used in the declaration of a | |
8381 | variable which requires destructing at the end of | |
8382 | the function; then build_vec_delete will need this | |
8383 | value. */ | |
8384 | int yes = suspend_momentary (); | |
8385 | /* might be a cast */ | |
8386 | if (TREE_CODE (size) == NOP_EXPR | |
8387 | && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0))) | |
8388 | size = TREE_OPERAND (size, 0); | |
8389 | ||
5566b478 MS |
8390 | /* If this involves a template parameter, it'll be |
8391 | constant, but we don't know what the value is yet. */ | |
8392 | if (current_template_parms) | |
8393 | { | |
8394 | itype = make_node (INTEGER_TYPE); | |
8395 | TYPE_MIN_VALUE (itype) = size_zero_node; | |
8396 | TYPE_MAX_VALUE (itype) = build_min | |
8397 | (MINUS_EXPR, sizetype, size, integer_one_node); | |
8398 | goto dont_grok_size; | |
8399 | } | |
8d08fdba MS |
8400 | |
8401 | if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE | |
8402 | && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE) | |
8403 | { | |
8404 | cp_error ("size of array `%D' has non-integer type", | |
8405 | dname); | |
8406 | size = integer_one_node; | |
8407 | } | |
8408 | if (TREE_READONLY_DECL_P (size)) | |
8409 | size = decl_constant_value (size); | |
e1cd6e56 | 8410 | if (pedantic && integer_zerop (size)) |
8d08fdba MS |
8411 | cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname); |
8412 | if (TREE_CONSTANT (size)) | |
8413 | { | |
dff6b454 RK |
8414 | int old_flag_pedantic_errors = flag_pedantic_errors; |
8415 | int old_pedantic = pedantic; | |
8416 | pedantic = flag_pedantic_errors = 1; | |
8417 | /* Always give overflow errors on array subscripts. */ | |
8d08fdba | 8418 | constant_expression_warning (size); |
dff6b454 RK |
8419 | pedantic = old_pedantic; |
8420 | flag_pedantic_errors = old_flag_pedantic_errors; | |
8d08fdba MS |
8421 | if (INT_CST_LT (size, integer_zero_node)) |
8422 | { | |
8423 | cp_error ("size of array `%D' is negative", dname); | |
8424 | size = integer_one_node; | |
8425 | } | |
8d08fdba MS |
8426 | } |
8427 | else | |
8428 | { | |
e1cd6e56 | 8429 | if (pedantic) |
a0a33927 MS |
8430 | { |
8431 | if (dname) | |
8432 | cp_pedwarn ("ANSI C++ forbids variable-size array `%D'", | |
8433 | dname); | |
8434 | else | |
8435 | cp_pedwarn ("ANSI C++ forbids variable-size array"); | |
8436 | } | |
8d08fdba | 8437 | } |
b7484fbe | 8438 | |
b7484fbe MS |
8439 | itype = |
8440 | fold (build_binary_op (MINUS_EXPR, | |
8441 | convert (index_type, size), | |
8442 | convert (index_type, | |
8443 | integer_one_node), 1)); | |
8444 | if (! TREE_CONSTANT (itype)) | |
8445 | itype = variable_size (itype); | |
8446 | itype = build_index_type (itype); | |
5566b478 | 8447 | dont_grok_size: |
8d08fdba MS |
8448 | resume_momentary (yes); |
8449 | } | |
8450 | ||
8451 | /* Build the array type itself, then merge any constancy or | |
8452 | volatility into the target type. We must do it in this order | |
8453 | to ensure that the TYPE_MAIN_VARIANT field of the array type | |
8454 | is set correctly. */ | |
8455 | ||
8456 | type = build_cplus_array_type (type, itype); | |
8457 | if (constp || volatilep) | |
f376e137 | 8458 | type = cp_build_type_variant (type, constp, volatilep); |
8d08fdba MS |
8459 | |
8460 | ctype = NULL_TREE; | |
8461 | } | |
8462 | break; | |
8463 | ||
8464 | case CALL_EXPR: | |
8465 | { | |
8466 | tree arg_types; | |
f376e137 MS |
8467 | int funcdecl_p; |
8468 | tree inner_parms = TREE_OPERAND (declarator, 1); | |
8469 | tree inner_decl = TREE_OPERAND (declarator, 0); | |
8d08fdba MS |
8470 | |
8471 | /* Declaring a function type. | |
8472 | Make sure we have a valid type for the function to return. */ | |
8473 | #if 0 | |
8474 | /* Is this an error? Should they be merged into TYPE here? */ | |
8475 | if (pedantic && (constp || volatilep)) | |
8476 | pedwarn ("function declared to return const or volatile result"); | |
8477 | #else | |
21474714 MS |
8478 | /* Merge any constancy or volatility into the function return |
8479 | type. */ | |
8d08fdba MS |
8480 | |
8481 | if (constp || volatilep) | |
8482 | { | |
f376e137 | 8483 | type = cp_build_type_variant (type, constp, volatilep); |
8d08fdba MS |
8484 | if (IS_AGGR_TYPE (type)) |
8485 | build_pointer_type (type); | |
8486 | constp = 0; | |
8487 | volatilep = 0; | |
8488 | } | |
8489 | #endif | |
8490 | ||
8491 | /* Warn about some types functions can't return. */ | |
8492 | ||
8493 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
8494 | { | |
8495 | error ("`%s' declared as function returning a function", name); | |
8496 | type = integer_type_node; | |
8497 | } | |
8498 | if (TREE_CODE (type) == ARRAY_TYPE) | |
8499 | { | |
8500 | error ("`%s' declared as function returning an array", name); | |
8501 | type = integer_type_node; | |
8502 | } | |
8503 | ||
f376e137 MS |
8504 | if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF) |
8505 | inner_decl = TREE_OPERAND (inner_decl, 1); | |
8506 | ||
b7484fbe MS |
8507 | /* Pick up type qualifiers which should be applied to `this'. */ |
8508 | quals = TREE_OPERAND (declarator, 2); | |
8509 | ||
f376e137 MS |
8510 | /* Say it's a definition only for the CALL_EXPR |
8511 | closest to the identifier. */ | |
8512 | funcdecl_p = | |
b7484fbe MS |
8513 | inner_decl && (TREE_CODE (inner_decl) == IDENTIFIER_NODE |
8514 | || TREE_CODE (inner_decl) == BIT_NOT_EXPR); | |
f376e137 | 8515 | |
8d08fdba MS |
8516 | if (ctype == NULL_TREE |
8517 | && decl_context == FIELD | |
f376e137 | 8518 | && funcdecl_p |
8d08fdba MS |
8519 | && (friendp == 0 || dname == current_class_name)) |
8520 | ctype = current_class_type; | |
8521 | ||
51c184be | 8522 | if (ctype && return_type == return_conversion) |
8d08fdba MS |
8523 | TYPE_HAS_CONVERSION (ctype) = 1; |
8524 | if (ctype && constructor_name (ctype) == dname) | |
8525 | { | |
8526 | /* We are within a class's scope. If our declarator name | |
8527 | is the same as the class name, and we are defining | |
8528 | a function, then it is a constructor/destructor, and | |
8529 | therefore returns a void type. */ | |
8530 | ||
8531 | if (flags == DTOR_FLAG) | |
8532 | { | |
8533 | /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may | |
8534 | not be declared const or volatile. A destructor | |
8535 | may not be static. */ | |
8536 | if (staticp == 2) | |
8537 | error ("destructor cannot be static member function"); | |
b7484fbe | 8538 | if (quals) |
8d08fdba | 8539 | { |
b7484fbe | 8540 | error ("destructors cannot be declared `const' or `volatile'"); |
8d08fdba MS |
8541 | return void_type_node; |
8542 | } | |
8543 | if (decl_context == FIELD) | |
8544 | { | |
8545 | if (! member_function_or_else (ctype, current_class_type, | |
8546 | "destructor for alien class `%s' cannot be a member")) | |
8547 | return void_type_node; | |
8548 | } | |
8549 | } | |
8550 | else /* it's a constructor. */ | |
8551 | { | |
db5ae43f MS |
8552 | if (explicitp == 1) |
8553 | explicitp = 2; | |
8d08fdba MS |
8554 | /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may |
8555 | not be declared const or volatile. A constructor may | |
8556 | not be virtual. A constructor may not be static. */ | |
8557 | if (staticp == 2) | |
8558 | error ("constructor cannot be static member function"); | |
8559 | if (virtualp) | |
8560 | { | |
8561 | pedwarn ("constructors cannot be declared virtual"); | |
8562 | virtualp = 0; | |
8563 | } | |
b7484fbe | 8564 | if (quals) |
8d08fdba | 8565 | { |
b7484fbe | 8566 | error ("constructors cannot be declared `const' or `volatile'"); |
8d08fdba MS |
8567 | return void_type_node; |
8568 | } | |
8d08fdba | 8569 | { |
51c184be MS |
8570 | RID_BIT_TYPE tmp_bits; |
8571 | bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof(RID_BIT_TYPE)); | |
8572 | RIDBIT_RESET (RID_INLINE, tmp_bits); | |
8573 | RIDBIT_RESET (RID_STATIC, tmp_bits); | |
8574 | if (RIDBIT_ANY_SET (tmp_bits)) | |
8d08fdba | 8575 | error ("return value type specifier for constructor ignored"); |
8d08fdba | 8576 | } |
f30432d7 | 8577 | type = build_pointer_type (ctype); |
8d08fdba MS |
8578 | if (decl_context == FIELD && |
8579 | IS_SIGNATURE (current_class_type)) | |
8580 | { | |
8581 | error ("constructor not allowed in signature"); | |
8582 | return void_type_node; | |
8583 | } | |
8584 | else if (decl_context == FIELD) | |
8585 | { | |
8586 | if (! member_function_or_else (ctype, current_class_type, | |
8587 | "constructor for alien class `%s' cannot be member")) | |
8588 | return void_type_node; | |
8589 | TYPE_HAS_CONSTRUCTOR (ctype) = 1; | |
8590 | if (return_type != return_ctor) | |
8591 | return NULL_TREE; | |
8592 | } | |
8593 | } | |
8594 | if (decl_context == FIELD) | |
8595 | staticp = 0; | |
8596 | } | |
b7484fbe | 8597 | else if (friendp) |
8d08fdba | 8598 | { |
b7484fbe MS |
8599 | if (initialized) |
8600 | error ("can't initialize friend function `%s'", name); | |
8601 | if (virtualp) | |
8602 | { | |
8603 | /* Cannot be both friend and virtual. */ | |
8604 | error ("virtual functions cannot be friends"); | |
8605 | RIDBIT_RESET (RID_FRIEND, specbits); | |
8606 | friendp = 0; | |
8607 | } | |
28cbf42c MS |
8608 | if (decl_context == NORMAL) |
8609 | error ("friend declaration not in class definition"); | |
8610 | if (current_function_decl && funcdef_flag) | |
8611 | cp_error ("can't define friend function `%s' in a local class definition", | |
8612 | name); | |
8d08fdba MS |
8613 | } |
8614 | ||
8d08fdba MS |
8615 | /* Traditionally, declaring return type float means double. */ |
8616 | ||
8617 | if (flag_traditional | |
8618 | && TYPE_MAIN_VARIANT (type) == float_type_node) | |
8619 | { | |
8620 | type = build_type_variant (double_type_node, | |
8621 | TYPE_READONLY (type), | |
8622 | TYPE_VOLATILE (type)); | |
8623 | } | |
8624 | ||
8625 | /* Construct the function type and go to the next | |
8626 | inner layer of declarator. */ | |
8627 | ||
f376e137 | 8628 | declarator = TREE_OPERAND (declarator, 0); |
8d08fdba | 8629 | |
f376e137 MS |
8630 | /* FIXME: This is where default args should be fully |
8631 | processed. */ | |
8d08fdba | 8632 | |
f376e137 | 8633 | arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0); |
8d08fdba MS |
8634 | |
8635 | if (declarator) | |
8636 | { | |
8637 | /* Get past destructors, etc. | |
8638 | We know we have one because FLAGS will be non-zero. | |
8639 | ||
8640 | Complain about improper parameter lists here. */ | |
8641 | if (TREE_CODE (declarator) == BIT_NOT_EXPR) | |
8642 | { | |
8643 | declarator = TREE_OPERAND (declarator, 0); | |
8644 | ||
8645 | if (strict_prototype == 0 && arg_types == NULL_TREE) | |
8646 | arg_types = void_list_node; | |
8647 | else if (arg_types == NULL_TREE | |
8648 | || arg_types != void_list_node) | |
8649 | { | |
8650 | error ("destructors cannot be specified with parameters"); | |
8651 | arg_types = void_list_node; | |
8652 | } | |
8653 | } | |
8654 | } | |
8655 | ||
8656 | /* ANSI seems to say that `const int foo ();' | |
8657 | does not make the function foo const. */ | |
8658 | type = build_function_type (type, | |
8659 | flag_traditional ? 0 : arg_types); | |
8660 | } | |
8661 | break; | |
8662 | ||
8663 | case ADDR_EXPR: | |
8664 | case INDIRECT_REF: | |
8665 | /* Filter out pointers-to-references and references-to-references. | |
8666 | We can get these if a TYPE_DECL is used. */ | |
8667 | ||
8668 | if (TREE_CODE (type) == REFERENCE_TYPE) | |
8669 | { | |
8670 | error ("cannot declare %s to references", | |
8671 | TREE_CODE (declarator) == ADDR_EXPR | |
8672 | ? "references" : "pointers"); | |
8673 | declarator = TREE_OPERAND (declarator, 0); | |
8674 | continue; | |
8675 | } | |
8676 | ||
a5894242 MS |
8677 | if (TREE_CODE (type) == OFFSET_TYPE |
8678 | && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE | |
8679 | || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE)) | |
8680 | { | |
8681 | cp_error ("cannot declare pointer to `%#T' member", | |
8682 | TREE_TYPE (type)); | |
8683 | type = TREE_TYPE (type); | |
8684 | } | |
8685 | ||
8d08fdba MS |
8686 | /* Merge any constancy or volatility into the target type |
8687 | for the pointer. */ | |
8688 | ||
8689 | if (constp || volatilep) | |
8690 | { | |
8691 | /* A const or volatile signature pointer/reference is | |
8692 | pointing to a const or volatile object, i.e., the | |
8693 | `optr' is const or volatile, respectively, not the | |
8694 | signature pointer/reference itself. */ | |
8695 | if (! IS_SIGNATURE (type)) | |
8696 | { | |
f376e137 | 8697 | type = cp_build_type_variant (type, constp, volatilep); |
8d08fdba MS |
8698 | if (IS_AGGR_TYPE (type)) |
8699 | build_pointer_type (type); | |
8700 | constp = 0; | |
8701 | volatilep = 0; | |
8702 | } | |
8703 | } | |
8704 | ||
8705 | if (IS_SIGNATURE (type)) | |
8706 | { | |
8707 | if (TREE_CODE (declarator) == ADDR_EXPR) | |
8708 | { | |
63718c49 GB |
8709 | if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE |
8710 | && TYPE_SIZE (type)) | |
8711 | cp_warning ("empty signature `%T' used in signature reference declaration", | |
8712 | type); | |
8d08fdba MS |
8713 | #if 0 |
8714 | type = build_signature_reference_type (type, | |
8715 | constp, volatilep); | |
8716 | #else | |
8717 | sorry ("signature reference"); | |
8718 | return NULL_TREE; | |
8719 | #endif | |
8720 | } | |
8721 | else | |
8722 | { | |
63718c49 GB |
8723 | if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE |
8724 | && TYPE_SIZE (type)) | |
8725 | cp_warning ("empty signature `%T' used in signature pointer declaration", | |
8726 | type); | |
8d08fdba MS |
8727 | type = build_signature_pointer_type (type, |
8728 | constp, volatilep); | |
8729 | } | |
8730 | constp = 0; | |
8731 | volatilep = 0; | |
8732 | } | |
8733 | else if (TREE_CODE (declarator) == ADDR_EXPR) | |
8734 | { | |
8735 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
8736 | { | |
8737 | error ("cannot declare references to functions; use pointer to function instead"); | |
8738 | type = build_pointer_type (type); | |
8739 | } | |
8740 | else | |
8741 | { | |
8742 | if (TYPE_MAIN_VARIANT (type) == void_type_node) | |
8743 | error ("invalid type: `void &'"); | |
8744 | else | |
8745 | type = build_reference_type (type); | |
8746 | } | |
8747 | } | |
8748 | else if (TREE_CODE (type) == METHOD_TYPE) | |
8749 | { | |
8750 | type = build_ptrmemfunc_type (build_pointer_type (type)); | |
8751 | } | |
8752 | else | |
8753 | type = build_pointer_type (type); | |
8754 | ||
8755 | /* Process a list of type modifier keywords (such as | |
8756 | const or volatile) that were given inside the `*' or `&'. */ | |
8757 | ||
8758 | if (TREE_TYPE (declarator)) | |
8759 | { | |
8760 | register tree typemodlist; | |
8761 | int erred = 0; | |
8762 | for (typemodlist = TREE_TYPE (declarator); typemodlist; | |
8763 | typemodlist = TREE_CHAIN (typemodlist)) | |
8764 | { | |
8765 | if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST]) | |
8766 | constp++; | |
8767 | else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE]) | |
8768 | volatilep++; | |
8769 | else if (!erred) | |
8770 | { | |
8771 | erred = 1; | |
8772 | error ("invalid type modifier within %s declarator", | |
8773 | TREE_CODE (declarator) == ADDR_EXPR | |
8774 | ? "reference" : "pointer"); | |
8775 | } | |
8776 | } | |
8777 | if (constp > 1) | |
a0a33927 | 8778 | pedwarn ("duplicate `const'"); |
8d08fdba | 8779 | if (volatilep > 1) |
a0a33927 MS |
8780 | pedwarn ("duplicate `volatile'"); |
8781 | if (TREE_CODE (declarator) == ADDR_EXPR | |
8782 | && (constp || volatilep)) | |
8783 | { | |
8784 | if (constp) | |
e1cd6e56 | 8785 | pedwarn ("discarding `const' applied to a reference"); |
a0a33927 | 8786 | if (volatilep) |
e1cd6e56 | 8787 | pedwarn ("discarding `volatile' applied to a reference"); |
a0a33927 MS |
8788 | constp = volatilep = 0; |
8789 | } | |
8d08fdba MS |
8790 | } |
8791 | declarator = TREE_OPERAND (declarator, 0); | |
8792 | ctype = NULL_TREE; | |
8793 | break; | |
8794 | ||
8795 | case SCOPE_REF: | |
8796 | { | |
8797 | /* We have converted type names to NULL_TREE if the | |
8798 | name was bogus, or to a _TYPE node, if not. | |
8799 | ||
8800 | The variable CTYPE holds the type we will ultimately | |
8801 | resolve to. The code here just needs to build | |
8802 | up appropriate member types. */ | |
8803 | tree sname = TREE_OPERAND (declarator, 1); | |
8804 | /* Destructors can have their visibilities changed as well. */ | |
8805 | if (TREE_CODE (sname) == BIT_NOT_EXPR) | |
8806 | sname = TREE_OPERAND (sname, 0); | |
8807 | ||
8808 | if (TREE_COMPLEXITY (declarator) == 0) | |
8809 | /* This needs to be here, in case we are called | |
8810 | multiple times. */ ; | |
8811 | else if (friendp && (TREE_COMPLEXITY (declarator) < 2)) | |
8812 | /* don't fall out into global scope. Hides real bug? --eichin */ ; | |
5566b478 MS |
8813 | else if (! IS_AGGR_TYPE_CODE |
8814 | (TREE_CODE (TREE_OPERAND (declarator, 0)))) | |
8815 | ; | |
8d08fdba MS |
8816 | else if (TREE_COMPLEXITY (declarator) == current_class_depth) |
8817 | { | |
a28e3c7f MS |
8818 | /* This pop_nested_class corresponds to the |
8819 | push_nested_class used to push into class scope for | |
8820 | parsing the argument list of a function decl, in | |
8821 | qualified_id. */ | |
8d08fdba MS |
8822 | pop_nested_class (1); |
8823 | TREE_COMPLEXITY (declarator) = current_class_depth; | |
8824 | } | |
8825 | else | |
8826 | my_friendly_abort (16); | |
8827 | ||
8828 | if (TREE_OPERAND (declarator, 0) == NULL_TREE) | |
8829 | { | |
8830 | /* We had a reference to a global decl, or | |
8831 | perhaps we were given a non-aggregate typedef, | |
8832 | in which case we cleared this out, and should just | |
8833 | keep going as though it wasn't there. */ | |
8834 | declarator = sname; | |
8835 | continue; | |
8836 | } | |
8837 | ctype = TREE_OPERAND (declarator, 0); | |
8838 | ||
8839 | if (sname == NULL_TREE) | |
8840 | goto done_scoping; | |
8841 | ||
8842 | if (TREE_CODE (sname) == IDENTIFIER_NODE) | |
8843 | { | |
8844 | /* This is the `standard' use of the scoping operator: | |
8845 | basetype :: member . */ | |
8846 | ||
db5ae43f | 8847 | if (ctype == current_class_type) |
28cbf42c MS |
8848 | { |
8849 | /* class A { | |
8850 | void A::f (); | |
8851 | }; | |
8852 | ||
8853 | Is this ill-formed? */ | |
8854 | ||
8855 | if (pedantic) | |
8856 | cp_pedwarn ("extra qualification `%T::' on member `%s' ignored", | |
8857 | ctype, name); | |
8858 | } | |
db5ae43f | 8859 | else if (TREE_CODE (type) == FUNCTION_TYPE) |
8d08fdba MS |
8860 | { |
8861 | if (current_class_type == NULL_TREE | |
8d08fdba MS |
8862 | || friendp) |
8863 | type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), | |
8864 | TREE_TYPE (type), TYPE_ARG_TYPES (type)); | |
8865 | else | |
8866 | { | |
5b605f68 | 8867 | cp_error ("cannot declare member function `%T::%s' within `%T'", |
a3203465 | 8868 | ctype, name, current_class_type); |
8d08fdba MS |
8869 | return void_type_node; |
8870 | } | |
8871 | } | |
5566b478 MS |
8872 | else if (RIDBIT_SETP (RID_TYPEDEF, specbits) |
8873 | || TYPE_SIZE (complete_type (ctype)) != NULL_TREE) | |
8d08fdba | 8874 | { |
8d08fdba | 8875 | /* have to move this code elsewhere in this function. |
db5ae43f MS |
8876 | this code is used for i.e., typedef int A::M; M *pm; |
8877 | ||
8878 | It is? How? jason 10/2/94 */ | |
8d08fdba | 8879 | |
8d08fdba MS |
8880 | if (current_class_type) |
8881 | { | |
db5ae43f MS |
8882 | cp_error ("cannot declare member `%T::%s' within `%T'", |
8883 | ctype, name, current_class_type); | |
8884 | return void_type_node; | |
8d08fdba MS |
8885 | } |
8886 | type = build_offset_type (ctype, type); | |
8887 | } | |
8888 | else if (uses_template_parms (ctype)) | |
8889 | { | |
8d08fdba | 8890 | if (TREE_CODE (type) == FUNCTION_TYPE) |
5566b478 MS |
8891 | type = |
8892 | build_cplus_method_type (build_type_variant (ctype, | |
8893 | constp, | |
8894 | volatilep), | |
8895 | TREE_TYPE (type), | |
8896 | TYPE_ARG_TYPES (type)); | |
8d08fdba MS |
8897 | } |
8898 | else | |
8899 | { | |
8900 | cp_error ("structure `%T' not yet defined", ctype); | |
8901 | return error_mark_node; | |
8902 | } | |
8903 | ||
8904 | declarator = sname; | |
8905 | } | |
8d08fdba MS |
8906 | else if (TREE_CODE (sname) == SCOPE_REF) |
8907 | my_friendly_abort (17); | |
8908 | else | |
8909 | { | |
8910 | done_scoping: | |
8911 | declarator = TREE_OPERAND (declarator, 1); | |
8912 | if (declarator && TREE_CODE (declarator) == CALL_EXPR) | |
8913 | /* In this case, we will deal with it later. */ | |
8914 | ; | |
8915 | else | |
8916 | { | |
8917 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
8918 | type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type)); | |
8919 | else | |
8920 | type = build_offset_type (ctype, type); | |
8921 | } | |
8922 | } | |
8923 | } | |
8924 | break; | |
8925 | ||
8926 | case BIT_NOT_EXPR: | |
8927 | declarator = TREE_OPERAND (declarator, 0); | |
8928 | break; | |
8929 | ||
8d08fdba MS |
8930 | case RECORD_TYPE: |
8931 | case UNION_TYPE: | |
8932 | case ENUMERAL_TYPE: | |
8933 | declarator = NULL_TREE; | |
8934 | break; | |
8935 | ||
8936 | case ERROR_MARK: | |
8937 | declarator = NULL_TREE; | |
8938 | break; | |
8939 | ||
8940 | default: | |
8941 | my_friendly_abort (158); | |
8942 | } | |
8943 | } | |
8944 | ||
db5ae43f MS |
8945 | if (explicitp == 1) |
8946 | { | |
8947 | error ("only constructors can be declared `explicit'"); | |
8948 | explicitp = 0; | |
8949 | } | |
8950 | ||
8d08fdba MS |
8951 | /* Now TYPE has the actual type. */ |
8952 | ||
8953 | /* If this is declaring a typedef name, return a TYPE_DECL. */ | |
8954 | ||
f30432d7 MS |
8955 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) |
8956 | { | |
8957 | if (constp) | |
8958 | { | |
8959 | error ("const `%s' cannot be declared `mutable'", name); | |
8960 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
8961 | } | |
8962 | else if (staticp) | |
8963 | { | |
8964 | error ("static `%s' cannot be declared `mutable'", name); | |
8965 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
8966 | } | |
8967 | } | |
8968 | ||
8d08fdba MS |
8969 | if (RIDBIT_SETP (RID_TYPEDEF, specbits)) |
8970 | { | |
8971 | tree decl; | |
8972 | ||
8973 | /* Note that the grammar rejects storage classes | |
8974 | in typenames, fields or parameters. */ | |
8975 | if (constp || volatilep) | |
f376e137 | 8976 | type = cp_build_type_variant (type, constp, volatilep); |
8d08fdba MS |
8977 | |
8978 | /* If the user declares "struct {...} foo" then `foo' will have | |
8979 | an anonymous name. Fill that name in now. Nothing can | |
8980 | refer to it, so nothing needs know about the name change. | |
8981 | The TYPE_NAME field was filled in by build_struct_xref. */ | |
8982 | if (type != error_mark_node | |
8983 | && TYPE_NAME (type) | |
8984 | && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL | |
8985 | && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type))) | |
8986 | { | |
8987 | /* replace the anonymous name with the real name everywhere. */ | |
8988 | lookup_tag_reverse (type, declarator); | |
8989 | TYPE_IDENTIFIER (type) = declarator; | |
8990 | ||
8991 | if (TYPE_LANG_SPECIFIC (type)) | |
8992 | TYPE_WAS_ANONYMOUS (type) = 1; | |
8993 | ||
8994 | { | |
8995 | tree d = TYPE_NAME (type), c = DECL_CONTEXT (d); | |
8996 | ||
8997 | if (!c) | |
8998 | set_nested_typename (d, 0, declarator, type); | |
8999 | else if (TREE_CODE (c) == FUNCTION_DECL) | |
9000 | set_nested_typename (d, DECL_ASSEMBLER_NAME (c), | |
9001 | declarator, type); | |
9002 | else | |
9003 | set_nested_typename (d, TYPE_NESTED_NAME (c), declarator, type); | |
8145f082 MS |
9004 | |
9005 | DECL_ASSEMBLER_NAME (d) = DECL_NAME (d); | |
9006 | DECL_ASSEMBLER_NAME (d) | |
9007 | = get_identifier (build_overload_name (type, 1, 1)); | |
8d08fdba MS |
9008 | } |
9009 | } | |
9010 | ||
8d08fdba | 9011 | decl = build_decl (TYPE_DECL, declarator, type); |
8d08fdba MS |
9012 | if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE) |
9013 | { | |
9014 | cp_error_at ("typedef name may not be class-qualified", decl); | |
a3203465 | 9015 | return NULL_TREE; |
8d08fdba MS |
9016 | } |
9017 | else if (quals) | |
9018 | { | |
9019 | if (ctype == NULL_TREE) | |
9020 | { | |
9021 | if (TREE_CODE (type) != METHOD_TYPE) | |
9022 | cp_error_at ("invalid type qualifier for non-method type", decl); | |
9023 | else | |
9024 | ctype = TYPE_METHOD_BASETYPE (type); | |
9025 | } | |
9026 | if (ctype != NULL_TREE) | |
9027 | grok_method_quals (ctype, decl, quals); | |
9028 | } | |
9029 | ||
9030 | if (RIDBIT_SETP (RID_SIGNED, specbits) | |
9031 | || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))) | |
9032 | C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1; | |
9033 | ||
9034 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) | |
9035 | { | |
9036 | error ("non-object member `%s' cannot be declared mutable", name); | |
9037 | } | |
9038 | ||
9039 | return decl; | |
9040 | } | |
9041 | ||
9042 | /* Detect the case of an array type of unspecified size | |
9043 | which came, as such, direct from a typedef name. | |
9044 | We must copy the type, so that each identifier gets | |
9045 | a distinct type, so that each identifier's size can be | |
9046 | controlled separately by its own initializer. */ | |
9047 | ||
9048 | if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE | |
9049 | && TYPE_DOMAIN (type) == NULL_TREE) | |
9050 | { | |
9051 | type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type)); | |
9052 | } | |
9053 | ||
9054 | /* If this is a type name (such as, in a cast or sizeof), | |
9055 | compute the type and return it now. */ | |
9056 | ||
9057 | if (decl_context == TYPENAME) | |
9058 | { | |
9059 | /* Note that the grammar rejects storage classes | |
9060 | in typenames, fields or parameters. */ | |
9061 | if (constp || volatilep) | |
9062 | if (IS_SIGNATURE (type)) | |
9063 | error ("`const' or `volatile' specified with signature type"); | |
9064 | else | |
f376e137 | 9065 | type = cp_build_type_variant (type, constp, volatilep); |
8d08fdba MS |
9066 | |
9067 | /* Special case: "friend class foo" looks like a TYPENAME context. */ | |
9068 | if (friendp) | |
9069 | { | |
b7484fbe MS |
9070 | if (volatilep) |
9071 | { | |
9072 | cp_error ("`volatile' specified for friend class declaration"); | |
9073 | volatilep = 0; | |
9074 | } | |
9075 | if (inlinep) | |
9076 | { | |
9077 | cp_error ("`inline' specified for friend class declaration"); | |
9078 | inlinep = 0; | |
9079 | } | |
9080 | ||
9081 | /* Only try to do this stuff if we didn't already give up. */ | |
9082 | if (type != integer_type_node) | |
9083 | { | |
9084 | /* A friendly class? */ | |
9085 | if (current_class_type) | |
9086 | make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type)); | |
9087 | else | |
9088 | error ("trying to make class `%s' a friend of global scope", | |
9089 | TYPE_NAME_STRING (type)); | |
9090 | type = void_type_node; | |
9091 | } | |
8d08fdba MS |
9092 | } |
9093 | else if (quals) | |
9094 | { | |
8d08fdba | 9095 | tree dummy = build_decl (TYPE_DECL, declarator, type); |
8d08fdba MS |
9096 | if (ctype == NULL_TREE) |
9097 | { | |
9098 | my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159); | |
9099 | ctype = TYPE_METHOD_BASETYPE (type); | |
9100 | } | |
9101 | grok_method_quals (ctype, dummy, quals); | |
9102 | type = TREE_TYPE (dummy); | |
9103 | } | |
9104 | ||
9105 | return type; | |
9106 | } | |
9107 | else if (declarator == NULL_TREE && decl_context != PARM | |
db5ae43f | 9108 | && decl_context != CATCHPARM |
8d08fdba MS |
9109 | && TREE_CODE (type) != UNION_TYPE |
9110 | && ! bitfield) | |
9111 | { | |
9112 | cp_error ("abstract declarator `%T' used as declaration", type); | |
9113 | declarator = make_anon_name (); | |
9114 | } | |
9115 | ||
9116 | /* `void' at top level (not within pointer) | |
9117 | is allowed only in typedefs or type names. | |
9118 | We don't complain about parms either, but that is because | |
9119 | a better error message can be made later. */ | |
9120 | ||
9121 | if (TYPE_MAIN_VARIANT (type) == void_type_node && decl_context != PARM) | |
9122 | { | |
b7484fbe MS |
9123 | if (! declarator) |
9124 | error ("unnamed variable or field declared void"); | |
9125 | else if (TREE_CODE (declarator) == IDENTIFIER_NODE) | |
8d08fdba MS |
9126 | { |
9127 | if (IDENTIFIER_OPNAME_P (declarator)) | |
8d08fdba | 9128 | my_friendly_abort (356); |
8d08fdba MS |
9129 | else |
9130 | error ("variable or field `%s' declared void", name); | |
9131 | } | |
9132 | else | |
9133 | error ("variable or field declared void"); | |
9134 | type = integer_type_node; | |
9135 | } | |
9136 | ||
9137 | /* Now create the decl, which may be a VAR_DECL, a PARM_DECL | |
9138 | or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */ | |
9139 | ||
9140 | { | |
9141 | register tree decl; | |
9142 | ||
9143 | if (decl_context == PARM) | |
9144 | { | |
8d08fdba MS |
9145 | if (ctype) |
9146 | error ("cannot use `::' in parameter declaration"); | |
9147 | ||
9148 | /* A parameter declared as an array of T is really a pointer to T. | |
9149 | One declared as a function is really a pointer to a function. | |
39211cd5 | 9150 | One declared as a member is really a pointer to member. */ |
8d08fdba MS |
9151 | |
9152 | if (TREE_CODE (type) == ARRAY_TYPE) | |
9153 | { | |
39211cd5 MS |
9154 | /* Transfer const-ness of array into that of type pointed to. */ |
9155 | type = build_pointer_type | |
f376e137 | 9156 | (cp_build_type_variant (TREE_TYPE (type), constp, volatilep)); |
39211cd5 | 9157 | volatilep = constp = 0; |
8d08fdba MS |
9158 | } |
9159 | else if (TREE_CODE (type) == FUNCTION_TYPE) | |
9160 | type = build_pointer_type (type); | |
9161 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
9162 | type = build_pointer_type (type); | |
b7484fbe MS |
9163 | else if (type == void_type_node && declarator) |
9164 | { | |
9165 | error ("declaration of `%s' as void", name); | |
9166 | return NULL_TREE; | |
9167 | } | |
8d08fdba | 9168 | |
8d08fdba MS |
9169 | decl = build_decl (PARM_DECL, declarator, type); |
9170 | ||
9171 | bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE, | |
9172 | inlinep, friendp, raises != NULL_TREE); | |
9173 | if (current_class_type | |
9174 | && IS_SIGNATURE (current_class_type)) | |
9175 | { | |
9176 | if (inlinep) | |
9177 | error ("parameter of signature member function declared `inline'"); | |
9178 | if (RIDBIT_SETP (RID_AUTO, specbits)) | |
9179 | error ("parameter of signature member function declared `auto'"); | |
9180 | if (RIDBIT_SETP (RID_REGISTER, specbits)) | |
9181 | error ("parameter of signature member function declared `register'"); | |
9182 | } | |
9183 | ||
9184 | /* Compute the type actually passed in the parmlist, | |
9185 | for the case where there is no prototype. | |
9186 | (For example, shorts and chars are passed as ints.) | |
9187 | When there is a prototype, this is overridden later. */ | |
9188 | ||
39211cd5 | 9189 | DECL_ARG_TYPE (decl) = type_promotes_to (type); |
8d08fdba MS |
9190 | } |
9191 | else if (decl_context == FIELD) | |
9192 | { | |
9193 | if (type == error_mark_node) | |
9194 | { | |
9195 | /* Happens when declaring arrays of sizes which | |
9196 | are error_mark_node, for example. */ | |
9197 | decl = NULL_TREE; | |
9198 | } | |
9199 | else if (TREE_CODE (type) == FUNCTION_TYPE) | |
9200 | { | |
9201 | int publicp = 0; | |
9202 | ||
72b7eeff MS |
9203 | /* We catch the others as conflicts with the builtin |
9204 | typedefs. */ | |
9205 | if (friendp && declarator == ridpointers[(int) RID_SIGNED]) | |
9206 | { | |
9207 | cp_error ("function `%D' cannot be declared friend", | |
9208 | declarator); | |
9209 | friendp = 0; | |
9210 | } | |
9211 | ||
8d08fdba MS |
9212 | if (friendp == 0) |
9213 | { | |
9214 | if (ctype == NULL_TREE) | |
9215 | ctype = current_class_type; | |
9216 | ||
9217 | if (ctype == NULL_TREE) | |
9218 | { | |
9219 | cp_error ("can't make `%D' into a method -- not in a class", | |
9220 | declarator); | |
9221 | return void_type_node; | |
9222 | } | |
9223 | ||
9224 | /* ``A union may [ ... ] not [ have ] virtual functions.'' | |
9225 | ARM 9.5 */ | |
9226 | if (virtualp && TREE_CODE (ctype) == UNION_TYPE) | |
9227 | { | |
9228 | cp_error ("function `%D' declared virtual inside a union", | |
9229 | declarator); | |
9230 | return void_type_node; | |
9231 | } | |
9232 | ||
9233 | if (declarator == ansi_opname[(int) NEW_EXPR] | |
a28e3c7f MS |
9234 | || declarator == ansi_opname[(int) VEC_NEW_EXPR] |
9235 | || declarator == ansi_opname[(int) DELETE_EXPR] | |
9236 | || declarator == ansi_opname[(int) VEC_DELETE_EXPR]) | |
8d08fdba MS |
9237 | { |
9238 | if (virtualp) | |
9239 | { | |
9240 | cp_error ("`%D' cannot be declared virtual, since it is always static", | |
9241 | declarator); | |
9242 | virtualp = 0; | |
9243 | } | |
9244 | } | |
9245 | else if (staticp < 2) | |
9246 | type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), | |
9247 | TREE_TYPE (type), TYPE_ARG_TYPES (type)); | |
9248 | } | |
9249 | ||
9250 | /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */ | |
faae18ab MS |
9251 | publicp = (! friendp |
9252 | || RIDBIT_SETP (RID_EXTERN, specbits) | |
9253 | || ! (funcdef_flag < 0 || inlinep)); | |
8d08fdba | 9254 | decl = grokfndecl (ctype, type, declarator, |
f30432d7 MS |
9255 | virtualp, flags, quals, raises, attrlist, |
9256 | friendp ? -1 : 0, publicp, inlinep); | |
f0e01782 MS |
9257 | if (decl == NULL_TREE) |
9258 | return NULL_TREE; | |
71851aaa | 9259 | decl = build_decl_attribute_variant (decl, decl_machine_attr); |
f0e01782 | 9260 | |
db5ae43f MS |
9261 | if (explicitp == 2) |
9262 | DECL_NONCONVERTING_P (decl) = 1; | |
8d08fdba MS |
9263 | } |
9264 | else if (TREE_CODE (type) == METHOD_TYPE) | |
9265 | { | |
faae18ab MS |
9266 | /* We only get here for friend declarations of |
9267 | members of other classes. */ | |
8d08fdba MS |
9268 | /* All method decls are public, so tell grokfndecl to set |
9269 | TREE_PUBLIC, also. */ | |
9270 | decl = grokfndecl (ctype, type, declarator, | |
f30432d7 | 9271 | virtualp, flags, quals, raises, attrlist, |
5566b478 | 9272 | friendp ? -1 : 0, 1, 0, funcdef_flag); |
f0e01782 MS |
9273 | if (decl == NULL_TREE) |
9274 | return NULL_TREE; | |
8d08fdba | 9275 | } |
5566b478 MS |
9276 | else if (!staticp && ! processing_template_decl |
9277 | && TYPE_SIZE (complete_type (type)) == NULL_TREE | |
8d08fdba MS |
9278 | && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0)) |
9279 | { | |
b7484fbe MS |
9280 | if (declarator) |
9281 | cp_error ("field `%D' has incomplete type", declarator); | |
9282 | else | |
9283 | cp_error ("name `%T' has incomplete type", type); | |
8d08fdba MS |
9284 | |
9285 | /* If we're instantiating a template, tell them which | |
9286 | instantiation made the field's type be incomplete. */ | |
9287 | if (current_class_type | |
9288 | && TYPE_NAME (current_class_type) | |
9289 | && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (current_class_type))) | |
9290 | && declspecs && TREE_VALUE (declspecs) | |
9291 | && TREE_TYPE (TREE_VALUE (declspecs)) == type) | |
db5ae43f MS |
9292 | cp_error (" in instantiation of template `%T'", |
9293 | current_class_type); | |
9294 | ||
8d08fdba MS |
9295 | type = error_mark_node; |
9296 | decl = NULL_TREE; | |
9297 | } | |
9298 | else | |
9299 | { | |
9300 | if (friendp) | |
9301 | { | |
9302 | error ("`%s' is neither function nor method; cannot be declared friend", | |
9303 | IDENTIFIER_POINTER (declarator)); | |
9304 | friendp = 0; | |
9305 | } | |
9306 | decl = NULL_TREE; | |
9307 | } | |
9308 | ||
9309 | if (friendp) | |
9310 | { | |
9311 | /* Friends are treated specially. */ | |
9312 | if (ctype == current_class_type) | |
9313 | warning ("member functions are implicitly friends of their class"); | |
9314 | else | |
9315 | { | |
9316 | tree t = NULL_TREE; | |
9317 | if (decl && DECL_NAME (decl)) | |
9318 | t = do_friend (ctype, declarator, decl, | |
5566b478 MS |
9319 | last_function_parms, flags, quals, |
9320 | funcdef_flag); | |
8d08fdba MS |
9321 | if (t && funcdef_flag) |
9322 | return t; | |
9323 | ||
9324 | return void_type_node; | |
9325 | } | |
9326 | } | |
9327 | ||
9328 | /* Structure field. It may not be a function, except for C++ */ | |
9329 | ||
9330 | if (decl == NULL_TREE) | |
9331 | { | |
8d08fdba MS |
9332 | if (initialized) |
9333 | { | |
a0a33927 MS |
9334 | /* Motion 10 at San Diego: If a static const integral data |
9335 | member is initialized with an integral constant | |
9336 | expression, the initializer may appear either in the | |
9337 | declaration (within the class), or in the definition, | |
9338 | but not both. If it appears in the class, the member is | |
9339 | a member constant. The file-scope definition is always | |
9340 | required. */ | |
8d08fdba | 9341 | if (staticp) |
a0a33927 MS |
9342 | { |
9343 | if (pedantic) | |
9344 | { | |
9345 | if (! constp) | |
9346 | cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'", | |
9347 | declarator); | |
9348 | ||
9349 | else if (! INTEGRAL_TYPE_P (type)) | |
9350 | cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator, type); | |
9351 | } | |
9352 | } | |
9353 | ||
8d08fdba MS |
9354 | /* Note that initialization of const members is prohibited |
9355 | by the draft ANSI standard, though it appears to be in | |
9356 | common practice. 12.6.2: The argument list is used to | |
9357 | initialize the named nonstatic member.... This (or an | |
7177d104 MS |
9358 | initializer list) is the only way to initialize |
9359 | nonstatic const and reference members. */ | |
e1cd6e56 | 9360 | else if (pedantic || ! constp) |
a0a33927 MS |
9361 | cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'", |
9362 | constp ? "const member" : "member", declarator); | |
8d08fdba MS |
9363 | } |
9364 | ||
9365 | if (staticp || (constp && initialized)) | |
9366 | { | |
f30432d7 MS |
9367 | /* ANSI C++ Apr '95 wp 9.2 */ |
9368 | if (staticp && declarator == current_class_name) | |
9369 | cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class", | |
9370 | declarator); | |
9371 | ||
8d08fdba MS |
9372 | /* C++ allows static class members. |
9373 | All other work for this is done by grokfield. | |
9374 | This VAR_DECL is built by build_lang_field_decl. | |
9375 | All other VAR_DECLs are built by build_decl. */ | |
9376 | decl = build_lang_field_decl (VAR_DECL, declarator, type); | |
5b605f68 MS |
9377 | TREE_STATIC (decl) = 1; |
9378 | /* In class context, 'static' means public access. */ | |
9379 | TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = !!staticp; | |
8d08fdba MS |
9380 | } |
9381 | else | |
9382 | { | |
9383 | decl = build_lang_field_decl (FIELD_DECL, declarator, type); | |
9384 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) | |
9385 | { | |
9386 | DECL_MUTABLE_P (decl) = 1; | |
9387 | RIDBIT_RESET (RID_MUTABLE, specbits); | |
9388 | } | |
9389 | } | |
9390 | ||
9391 | bad_specifiers (decl, "field", virtualp, quals != NULL_TREE, | |
9392 | inlinep, friendp, raises != NULL_TREE); | |
9393 | } | |
9394 | } | |
9395 | else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE) | |
9396 | { | |
8d08fdba MS |
9397 | tree original_name = declarator; |
9398 | int publicp = 0; | |
9399 | ||
9400 | if (! declarator) | |
9401 | return NULL_TREE; | |
9402 | ||
8926095f MS |
9403 | if (RIDBIT_SETP (RID_AUTO, specbits)) |
9404 | error ("storage class `auto' invalid for function `%s'", name); | |
9405 | else if (RIDBIT_SETP (RID_REGISTER, specbits)) | |
9406 | error ("storage class `register' invalid for function `%s'", name); | |
8d08fdba MS |
9407 | |
9408 | /* Function declaration not at top level. | |
9409 | Storage classes other than `extern' are not allowed | |
9410 | and `extern' makes no difference. */ | |
a9aedbc2 | 9411 | if (! toplevel_bindings_p () |
8926095f MS |
9412 | && (RIDBIT_SETP (RID_STATIC, specbits) |
9413 | || RIDBIT_SETP (RID_INLINE, specbits)) | |
8d08fdba | 9414 | && pedantic) |
8926095f MS |
9415 | { |
9416 | if (RIDBIT_SETP (RID_STATIC, specbits)) | |
9417 | pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name); | |
9418 | else | |
9419 | pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name); | |
9420 | } | |
9421 | ||
8d08fdba MS |
9422 | if (ctype == NULL_TREE) |
9423 | { | |
9424 | if (virtualp) | |
9425 | { | |
9426 | error ("virtual non-class function `%s'", name); | |
9427 | virtualp = 0; | |
9428 | } | |
9429 | ||
9430 | if (current_lang_name == lang_name_cplusplus | |
5566b478 | 9431 | && ! current_template_parms |
8d08fdba MS |
9432 | && ! (IDENTIFIER_LENGTH (original_name) == 4 |
9433 | && IDENTIFIER_POINTER (original_name)[0] == 'm' | |
9434 | && strcmp (IDENTIFIER_POINTER (original_name), "main") == 0) | |
9435 | && ! (IDENTIFIER_LENGTH (original_name) > 10 | |
9436 | && IDENTIFIER_POINTER (original_name)[0] == '_' | |
9437 | && IDENTIFIER_POINTER (original_name)[1] == '_' | |
9438 | && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0)) | |
8926095f MS |
9439 | /* Plain overloading: will not be grok'd by grokclassfn. */ |
9440 | declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0); | |
8d08fdba MS |
9441 | } |
9442 | else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2) | |
9443 | type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), | |
9444 | TREE_TYPE (type), TYPE_ARG_TYPES (type)); | |
9445 | ||
faae18ab MS |
9446 | /* Record presence of `static'. In C++, `inline' implies `static'. */ |
9447 | publicp = (ctype != NULL_TREE | |
a9aedbc2 | 9448 | || RIDBIT_SETP (RID_EXTERN, specbits) |
faae18ab MS |
9449 | || (!RIDBIT_SETP (RID_STATIC, specbits) |
9450 | && !RIDBIT_SETP (RID_INLINE, specbits))); | |
8d08fdba MS |
9451 | |
9452 | decl = grokfndecl (ctype, type, original_name, | |
f30432d7 | 9453 | virtualp, flags, quals, raises, attrlist, |
5566b478 MS |
9454 | friendp ? 2 : 1, |
9455 | publicp, inlinep, funcdef_flag); | |
f0e01782 MS |
9456 | if (decl == NULL_TREE) |
9457 | return NULL_TREE; | |
8d08fdba MS |
9458 | |
9459 | if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c) | |
6060a796 | 9460 | DECL_ASSEMBLER_NAME (decl) = current_namespace_id (declarator); |
8d08fdba MS |
9461 | |
9462 | if (staticp == 1) | |
9463 | { | |
9464 | int illegal_static = 0; | |
9465 | ||
9466 | /* Don't allow a static member function in a class, and forbid | |
9467 | declaring main to be static. */ | |
9468 | if (TREE_CODE (type) == METHOD_TYPE) | |
9469 | { | |
00595019 | 9470 | cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl); |
8d08fdba MS |
9471 | illegal_static = 1; |
9472 | } | |
8d08fdba MS |
9473 | else if (current_function_decl) |
9474 | { | |
9475 | /* FIXME need arm citation */ | |
9476 | error ("cannot declare static function inside another function"); | |
9477 | illegal_static = 1; | |
9478 | } | |
9479 | ||
9480 | if (illegal_static) | |
9481 | { | |
9482 | staticp = 0; | |
9483 | RIDBIT_RESET (RID_STATIC, specbits); | |
9484 | } | |
9485 | } | |
8d08fdba MS |
9486 | } |
9487 | else | |
9488 | { | |
9489 | /* It's a variable. */ | |
9490 | ||
db5ae43f MS |
9491 | if (decl_context == CATCHPARM) |
9492 | { | |
9493 | if (ctype) | |
9494 | { | |
9495 | ctype = NULL_TREE; | |
9496 | error ("cannot use `::' in parameter declaration"); | |
9497 | } | |
9498 | ||
9499 | /* A parameter declared as an array of T is really a pointer to T. | |
9500 | One declared as a function is really a pointer to a function. | |
9501 | One declared as a member is really a pointer to member. */ | |
9502 | ||
9503 | if (TREE_CODE (type) == ARRAY_TYPE) | |
9504 | { | |
9505 | /* Transfer const-ness of array into that of type pointed to. */ | |
9506 | type = build_pointer_type | |
9507 | (cp_build_type_variant (TREE_TYPE (type), constp, volatilep)); | |
9508 | volatilep = constp = 0; | |
9509 | } | |
9510 | else if (TREE_CODE (type) == FUNCTION_TYPE) | |
9511 | type = build_pointer_type (type); | |
9512 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
9513 | type = build_pointer_type (type); | |
9514 | } | |
9515 | ||
8d08fdba | 9516 | /* An uninitialized decl with `extern' is a reference. */ |
a9aedbc2 | 9517 | decl = grokvardecl (type, declarator, specbits, initialized, constp); |
8d08fdba MS |
9518 | bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE, |
9519 | inlinep, friendp, raises != NULL_TREE); | |
9520 | ||
9521 | if (ctype) | |
9522 | { | |
f0e01782 | 9523 | DECL_CONTEXT (decl) = ctype; |
8d08fdba MS |
9524 | if (staticp == 1) |
9525 | { | |
f30432d7 | 9526 | cp_pedwarn ("static member `%D' re-declared as static", decl); |
8d08fdba MS |
9527 | staticp = 0; |
9528 | RIDBIT_RESET (RID_STATIC, specbits); | |
9529 | } | |
b7484fbe MS |
9530 | if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl)) |
9531 | { | |
9532 | cp_error ("static member `%D' declared `register'", decl); | |
9533 | RIDBIT_RESET (RID_REGISTER, specbits); | |
9534 | } | |
f30432d7 | 9535 | if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic) |
8d08fdba | 9536 | { |
f30432d7 MS |
9537 | cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage", |
9538 | decl); | |
8d08fdba MS |
9539 | RIDBIT_RESET (RID_EXTERN, specbits); |
9540 | } | |
9541 | } | |
9542 | } | |
9543 | ||
9544 | if (RIDBIT_SETP (RID_MUTABLE, specbits)) | |
9545 | { | |
9546 | error ("`%s' cannot be declared mutable", name); | |
9547 | } | |
9548 | ||
9549 | /* Record `register' declaration for warnings on & | |
9550 | and in case doing stupid register allocation. */ | |
9551 | ||
9552 | if (RIDBIT_SETP (RID_REGISTER, specbits)) | |
9553 | DECL_REGISTER (decl) = 1; | |
9554 | ||
8926095f MS |
9555 | if (RIDBIT_SETP (RID_EXTERN, specbits)) |
9556 | DECL_THIS_EXTERN (decl) = 1; | |
9557 | ||
faae18ab MS |
9558 | if (RIDBIT_SETP (RID_STATIC, specbits)) |
9559 | DECL_THIS_STATIC (decl) = 1; | |
9560 | ||
8d08fdba MS |
9561 | /* Record constancy and volatility. */ |
9562 | ||
9563 | if (constp) | |
9564 | TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE; | |
9565 | if (volatilep) | |
9566 | { | |
9567 | TREE_SIDE_EFFECTS (decl) = 1; | |
9568 | TREE_THIS_VOLATILE (decl) = 1; | |
9569 | } | |
9570 | ||
9571 | return decl; | |
9572 | } | |
9573 | } | |
9574 | \f | |
9575 | /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist. | |
9576 | An empty exprlist is a parmlist. An exprlist which | |
9577 | contains only identifiers at the global level | |
9578 | is a parmlist. Otherwise, it is an exprlist. */ | |
9579 | int | |
9580 | parmlist_is_exprlist (exprs) | |
9581 | tree exprs; | |
9582 | { | |
9583 | if (exprs == NULL_TREE || TREE_PARMLIST (exprs)) | |
9584 | return 0; | |
9585 | ||
a9aedbc2 | 9586 | if (toplevel_bindings_p ()) |
8d08fdba MS |
9587 | { |
9588 | /* At the global level, if these are all identifiers, | |
9589 | then it is a parmlist. */ | |
9590 | while (exprs) | |
9591 | { | |
9592 | if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE) | |
9593 | return 1; | |
9594 | exprs = TREE_CHAIN (exprs); | |
9595 | } | |
9596 | return 0; | |
9597 | } | |
9598 | return 1; | |
9599 | } | |
9600 | ||
9601 | /* Subroutine of `grokparms'. In a fcn definition, arg types must | |
9602 | be complete. | |
9603 | ||
9604 | C++: also subroutine of `start_function'. */ | |
9605 | static void | |
9606 | require_complete_types_for_parms (parms) | |
9607 | tree parms; | |
9608 | { | |
5566b478 MS |
9609 | if (processing_template_decl) |
9610 | return; | |
9611 | ||
8d08fdba MS |
9612 | while (parms) |
9613 | { | |
9614 | tree type = TREE_TYPE (parms); | |
5566b478 | 9615 | if (TYPE_SIZE (complete_type (type)) == NULL_TREE) |
8d08fdba MS |
9616 | { |
9617 | if (DECL_NAME (parms)) | |
9618 | error ("parameter `%s' has incomplete type", | |
9619 | IDENTIFIER_POINTER (DECL_NAME (parms))); | |
9620 | else | |
9621 | error ("parameter has incomplete type"); | |
9622 | TREE_TYPE (parms) = error_mark_node; | |
9623 | } | |
9624 | #if 0 | |
9625 | /* If the arg types are incomplete in a declaration, | |
9626 | they must include undefined tags. | |
9627 | These tags can never be defined in the scope of the declaration, | |
9628 | so the types can never be completed, | |
9629 | and no call can be compiled successfully. */ | |
9630 | /* This is not the right behavior for C++, but not having | |
9631 | it is also probably wrong. */ | |
9632 | else | |
9633 | { | |
9634 | /* Now warn if is a pointer to an incomplete type. */ | |
9635 | while (TREE_CODE (type) == POINTER_TYPE | |
9636 | || TREE_CODE (type) == REFERENCE_TYPE) | |
9637 | type = TREE_TYPE (type); | |
9638 | type = TYPE_MAIN_VARIANT (type); | |
9639 | if (TYPE_SIZE (type) == NULL_TREE) | |
9640 | { | |
9641 | if (DECL_NAME (parm) != NULL_TREE) | |
9642 | warning ("parameter `%s' points to incomplete type", | |
9643 | IDENTIFIER_POINTER (DECL_NAME (parm))); | |
9644 | else | |
9645 | warning ("parameter points to incomplete type"); | |
9646 | } | |
9647 | } | |
9648 | #endif | |
9649 | parms = TREE_CHAIN (parms); | |
9650 | } | |
9651 | } | |
9652 | ||
9653 | /* Decode the list of parameter types for a function type. | |
9654 | Given the list of things declared inside the parens, | |
9655 | return a list of types. | |
9656 | ||
9657 | The list we receive can have three kinds of elements: | |
9658 | an IDENTIFIER_NODE for names given without types, | |
9659 | a TREE_LIST node for arguments given as typespecs or names with typespecs, | |
9660 | or void_type_node, to mark the end of an argument list | |
9661 | when additional arguments are not permitted (... was not used). | |
9662 | ||
9663 | FUNCDEF_FLAG is nonzero for a function definition, 0 for | |
9664 | a mere declaration. A nonempty identifier-list gets an error message | |
9665 | when FUNCDEF_FLAG is zero. | |
9666 | If FUNCDEF_FLAG is 1, then parameter types must be complete. | |
9667 | If FUNCDEF_FLAG is -1, then parameter types may be incomplete. | |
9668 | ||
9669 | If all elements of the input list contain types, | |
9670 | we return a list of the types. | |
9671 | If all elements contain no type (except perhaps a void_type_node | |
9672 | at the end), we return a null list. | |
9673 | If some have types and some do not, it is an error, and we | |
9674 | return a null list. | |
9675 | ||
9676 | Also set last_function_parms to either | |
9677 | a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs. | |
9678 | A list of names is converted to a chain of PARM_DECLs | |
9679 | by store_parm_decls so that ultimately it is always a chain of decls. | |
9680 | ||
9681 | Note that in C++, parameters can take default values. These default | |
9682 | values are in the TREE_PURPOSE field of the TREE_LIST. It is | |
9683 | an error to specify default values which are followed by parameters | |
9684 | that have no default values, or an ELLIPSES. For simplicities sake, | |
9685 | only parameters which are specified with their types can take on | |
9686 | default values. */ | |
9687 | ||
9688 | static tree | |
9689 | grokparms (first_parm, funcdef_flag) | |
9690 | tree first_parm; | |
9691 | int funcdef_flag; | |
9692 | { | |
9693 | tree result = NULL_TREE; | |
9694 | tree decls = NULL_TREE; | |
9695 | ||
9696 | if (first_parm != NULL_TREE | |
9697 | && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE) | |
9698 | { | |
9699 | if (! funcdef_flag) | |
9700 | pedwarn ("parameter names (without types) in function declaration"); | |
9701 | last_function_parms = first_parm; | |
9702 | return NULL_TREE; | |
9703 | } | |
9704 | else if (first_parm != NULL_TREE | |
9705 | && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST | |
9706 | && TREE_VALUE (first_parm) != void_type_node) | |
9707 | my_friendly_abort (145); | |
9708 | else | |
9709 | { | |
9710 | /* Types were specified. This is a list of declarators | |
9711 | each represented as a TREE_LIST node. */ | |
9712 | register tree parm, chain; | |
5566b478 | 9713 | int any_init = 0, any_error = 0; |
8d08fdba MS |
9714 | |
9715 | if (first_parm != NULL_TREE) | |
9716 | { | |
9717 | tree last_result = NULL_TREE; | |
9718 | tree last_decl = NULL_TREE; | |
9719 | ||
9720 | for (parm = first_parm; parm != NULL_TREE; parm = chain) | |
9721 | { | |
9722 | tree type, list_node = parm; | |
9723 | register tree decl = TREE_VALUE (parm); | |
9724 | tree init = TREE_PURPOSE (parm); | |
9725 | ||
9726 | chain = TREE_CHAIN (parm); | |
9727 | /* @@ weak defense against parse errors. */ | |
9728 | if (decl != void_type_node && TREE_CODE (decl) != TREE_LIST) | |
9729 | { | |
9730 | /* Give various messages as the need arises. */ | |
9731 | if (TREE_CODE (decl) == STRING_CST) | |
9732 | error ("invalid string constant `%s'", | |
9733 | TREE_STRING_POINTER (decl)); | |
9734 | else if (TREE_CODE (decl) == INTEGER_CST) | |
9735 | error ("invalid integer constant in parameter list, did you forget to give parameter name?"); | |
9736 | continue; | |
9737 | } | |
9738 | ||
9739 | if (decl != void_type_node) | |
9740 | { | |
9741 | /* @@ May need to fetch out a `raises' here. */ | |
9742 | decl = grokdeclarator (TREE_VALUE (decl), | |
9743 | TREE_PURPOSE (decl), | |
f30432d7 MS |
9744 | PARM, init != NULL_TREE, |
9745 | NULL_TREE, NULL_TREE); | |
8d08fdba MS |
9746 | if (! decl) |
9747 | continue; | |
9748 | type = TREE_TYPE (decl); | |
9749 | if (TYPE_MAIN_VARIANT (type) == void_type_node) | |
9750 | decl = void_type_node; | |
9751 | else if (TREE_CODE (type) == METHOD_TYPE) | |
9752 | { | |
9753 | if (DECL_NAME (decl)) | |
9754 | /* Cannot use `error_with_decl' here because | |
9755 | we don't have DECL_CONTEXT set up yet. */ | |
9756 | error ("parameter `%s' invalidly declared method type", | |
9757 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
9758 | else | |
9759 | error ("parameter invalidly declared method type"); | |
9760 | type = build_pointer_type (type); | |
9761 | TREE_TYPE (decl) = type; | |
9762 | } | |
9763 | else if (TREE_CODE (type) == OFFSET_TYPE) | |
9764 | { | |
9765 | if (DECL_NAME (decl)) | |
9766 | error ("parameter `%s' invalidly declared offset type", | |
9767 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
9768 | else | |
9769 | error ("parameter invalidly declared offset type"); | |
9770 | type = build_pointer_type (type); | |
9771 | TREE_TYPE (decl) = type; | |
9772 | } | |
9773 | else if (TREE_CODE (type) == RECORD_TYPE | |
9774 | && TYPE_LANG_SPECIFIC (type) | |
9775 | && CLASSTYPE_ABSTRACT_VIRTUALS (type)) | |
9776 | { | |
9777 | abstract_virtuals_error (decl, type); | |
9778 | any_error = 1; /* seems like a good idea */ | |
9779 | } | |
9780 | else if (TREE_CODE (type) == RECORD_TYPE | |
9781 | && TYPE_LANG_SPECIFIC (type) | |
9782 | && IS_SIGNATURE (type)) | |
9783 | { | |
9784 | signature_error (decl, type); | |
9785 | any_error = 1; /* seems like a good idea */ | |
9786 | } | |
9787 | } | |
9788 | ||
9789 | if (decl == void_type_node) | |
9790 | { | |
9791 | if (result == NULL_TREE) | |
9792 | { | |
9793 | result = void_list_node; | |
9794 | last_result = result; | |
9795 | } | |
9796 | else | |
9797 | { | |
9798 | TREE_CHAIN (last_result) = void_list_node; | |
9799 | last_result = void_list_node; | |
9800 | } | |
8d08fdba MS |
9801 | if (chain |
9802 | && (chain != void_list_node || TREE_CHAIN (chain))) | |
9803 | error ("`void' in parameter list must be entire list"); | |
9804 | break; | |
9805 | } | |
9806 | ||
9807 | /* Since there is a prototype, args are passed in their own types. */ | |
9808 | DECL_ARG_TYPE (decl) = TREE_TYPE (decl); | |
9809 | #ifdef PROMOTE_PROTOTYPES | |
9810 | if ((TREE_CODE (type) == INTEGER_TYPE | |
9811 | || TREE_CODE (type) == ENUMERAL_TYPE) | |
9812 | && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) | |
9813 | DECL_ARG_TYPE (decl) = integer_type_node; | |
9814 | #endif | |
9815 | if (!any_error) | |
9816 | { | |
9817 | if (init) | |
9818 | { | |
9819 | any_init++; | |
9820 | if (TREE_CODE (init) == SAVE_EXPR) | |
9821 | PARM_DECL_EXPR (init) = 1; | |
5566b478 MS |
9822 | else if (current_template_parms) |
9823 | ; | |
b7484fbe MS |
9824 | else if (TREE_CODE (init) == VAR_DECL |
9825 | || TREE_CODE (init) == PARM_DECL) | |
8d08fdba MS |
9826 | { |
9827 | if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init))) | |
9828 | { | |
9829 | /* ``Local variables may not be used in default | |
9830 | argument expressions.'' dpANSI C++ 8.2.6 */ | |
9831 | /* If extern int i; within a function is not | |
9832 | considered a local variable, then this code is | |
9833 | wrong. */ | |
9834 | cp_error ("local variable `%D' may not be used as a default argument", init); | |
9835 | any_error = 1; | |
9836 | } | |
9837 | else if (TREE_READONLY_DECL_P (init)) | |
9838 | init = decl_constant_value (init); | |
9839 | } | |
9840 | else | |
9841 | init = require_instantiated_type (type, init, integer_zero_node); | |
8d08fdba MS |
9842 | } |
9843 | } | |
9844 | else | |
9845 | init = NULL_TREE; | |
9846 | ||
9847 | if (decls == NULL_TREE) | |
9848 | { | |
9849 | decls = decl; | |
9850 | last_decl = decls; | |
9851 | } | |
9852 | else | |
9853 | { | |
9854 | TREE_CHAIN (last_decl) = decl; | |
9855 | last_decl = decl; | |
9856 | } | |
9857 | if (TREE_PERMANENT (list_node)) | |
9858 | { | |
9859 | TREE_PURPOSE (list_node) = init; | |
9860 | TREE_VALUE (list_node) = type; | |
9861 | TREE_CHAIN (list_node) = NULL_TREE; | |
9862 | } | |
9863 | else | |
9864 | list_node = saveable_tree_cons (init, type, NULL_TREE); | |
9865 | if (result == NULL_TREE) | |
9866 | { | |
9867 | result = list_node; | |
9868 | last_result = result; | |
9869 | } | |
9870 | else | |
9871 | { | |
9872 | TREE_CHAIN (last_result) = list_node; | |
9873 | last_result = list_node; | |
9874 | } | |
9875 | } | |
9876 | if (last_result) | |
9877 | TREE_CHAIN (last_result) = NULL_TREE; | |
9878 | /* If there are no parameters, and the function does not end | |
9879 | with `...', then last_decl will be NULL_TREE. */ | |
9880 | if (last_decl != NULL_TREE) | |
9881 | TREE_CHAIN (last_decl) = NULL_TREE; | |
9882 | } | |
9883 | } | |
9884 | ||
9885 | last_function_parms = decls; | |
9886 | ||
9887 | /* In a fcn definition, arg types must be complete. */ | |
9888 | if (funcdef_flag > 0) | |
9889 | require_complete_types_for_parms (last_function_parms); | |
9890 | ||
9891 | return result; | |
9892 | } | |
9893 | \f | |
9894 | /* These memoizing functions keep track of special properties which | |
9895 | a class may have. `grok_ctor_properties' notices whether a class | |
9896 | has a constructor of the form X(X&), and also complains | |
9897 | if the class has a constructor of the form X(X). | |
9898 | `grok_op_properties' takes notice of the various forms of | |
9899 | operator= which are defined, as well as what sorts of type conversion | |
9900 | may apply. Both functions take a FUNCTION_DECL as an argument. */ | |
a0a33927 | 9901 | int |
8d08fdba MS |
9902 | grok_ctor_properties (ctype, decl) |
9903 | tree ctype, decl; | |
9904 | { | |
9905 | tree parmtypes = FUNCTION_ARG_CHAIN (decl); | |
9906 | tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node; | |
9907 | ||
9908 | /* When a type has virtual baseclasses, a magical first int argument is | |
9909 | added to any ctor so we can tell if the class has been initialized | |
9910 | yet. This could screw things up in this function, so we deliberately | |
9911 | ignore the leading int if we're in that situation. */ | |
9912 | if (parmtypes | |
9913 | && TREE_VALUE (parmtypes) == integer_type_node | |
9914 | && TYPE_USES_VIRTUAL_BASECLASSES (ctype)) | |
9915 | { | |
9916 | parmtypes = TREE_CHAIN (parmtypes); | |
9917 | parmtype = TREE_VALUE (parmtypes); | |
9918 | } | |
9919 | ||
9920 | if (TREE_CODE (parmtype) == REFERENCE_TYPE | |
9921 | && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype) | |
9922 | { | |
9923 | if (TREE_CHAIN (parmtypes) == NULL_TREE | |
9924 | || TREE_CHAIN (parmtypes) == void_list_node | |
9925 | || TREE_PURPOSE (TREE_CHAIN (parmtypes))) | |
9926 | { | |
9927 | TYPE_HAS_INIT_REF (ctype) = 1; | |
9928 | if (TYPE_READONLY (TREE_TYPE (parmtype))) | |
9929 | TYPE_HAS_CONST_INIT_REF (ctype) = 1; | |
9930 | } | |
9931 | else | |
9932 | TYPE_GETS_INIT_AGGR (ctype) = 1; | |
9933 | } | |
9934 | else if (TYPE_MAIN_VARIANT (parmtype) == ctype) | |
9935 | { | |
9936 | if (TREE_CHAIN (parmtypes) != NULL_TREE | |
9937 | && TREE_CHAIN (parmtypes) == void_list_node) | |
a0a33927 MS |
9938 | { |
9939 | cp_error ("invalid constructor; you probably meant `%T (%T&)'", | |
9940 | ctype, ctype); | |
9941 | SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype); | |
9942 | ||
9943 | return 0; | |
9944 | } | |
9945 | else | |
9946 | TYPE_GETS_INIT_AGGR (ctype) = 1; | |
8d08fdba MS |
9947 | } |
9948 | else if (TREE_CODE (parmtype) == VOID_TYPE | |
9949 | || TREE_PURPOSE (parmtypes) != NULL_TREE) | |
9950 | TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1; | |
a0a33927 MS |
9951 | |
9952 | return 1; | |
8d08fdba MS |
9953 | } |
9954 | ||
9955 | /* An operator with this name can be either unary or binary. */ | |
a28e3c7f MS |
9956 | static int |
9957 | ambi_op_p (name) | |
8d08fdba MS |
9958 | tree name; |
9959 | { | |
9960 | return (name == ansi_opname [(int) INDIRECT_REF] | |
9961 | || name == ansi_opname [(int) ADDR_EXPR] | |
9962 | || name == ansi_opname [(int) NEGATE_EXPR] | |
9963 | || name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
9964 | || name == ansi_opname[(int) POSTDECREMENT_EXPR] | |
9965 | || name == ansi_opname [(int) CONVERT_EXPR]); | |
9966 | } | |
9967 | ||
9968 | /* An operator with this name can only be unary. */ | |
a28e3c7f MS |
9969 | static int |
9970 | unary_op_p (name) | |
8d08fdba MS |
9971 | tree name; |
9972 | { | |
9973 | return (name == ansi_opname [(int) TRUTH_NOT_EXPR] | |
9974 | || name == ansi_opname [(int) BIT_NOT_EXPR] | |
9975 | || name == ansi_opname [(int) COMPONENT_REF] | |
9976 | || OPERATOR_TYPENAME_P (name)); | |
9977 | } | |
9978 | ||
9979 | /* Do a little sanity-checking on how they declared their operator. */ | |
5566b478 | 9980 | void |
8d08fdba MS |
9981 | grok_op_properties (decl, virtualp, friendp) |
9982 | tree decl; | |
9983 | int virtualp, friendp; | |
9984 | { | |
9985 | tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
9986 | int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE); | |
9987 | tree name = DECL_NAME (decl); | |
8d08fdba | 9988 | |
a28e3c7f MS |
9989 | if (current_class_type == NULL_TREE) |
9990 | friendp = 1; | |
8d08fdba | 9991 | |
a28e3c7f MS |
9992 | if (! friendp) |
9993 | { | |
9994 | if (name == ansi_opname[(int) MODIFY_EXPR]) | |
9995 | TYPE_HAS_ASSIGNMENT (current_class_type) = 1; | |
9996 | else if (name == ansi_opname[(int) CALL_EXPR]) | |
9997 | TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1; | |
9998 | else if (name == ansi_opname[(int) ARRAY_REF]) | |
9999 | TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1; | |
10000 | else if (name == ansi_opname[(int) COMPONENT_REF] | |
10001 | || name == ansi_opname[(int) MEMBER_REF]) | |
10002 | TYPE_OVERLOADS_ARROW (current_class_type) = 1; | |
10003 | else if (name == ansi_opname[(int) NEW_EXPR]) | |
10004 | TYPE_GETS_NEW (current_class_type) |= 1; | |
10005 | else if (name == ansi_opname[(int) DELETE_EXPR]) | |
10006 | TYPE_GETS_DELETE (current_class_type) |= 1; | |
10007 | else if (name == ansi_opname[(int) VEC_NEW_EXPR]) | |
10008 | TYPE_GETS_NEW (current_class_type) |= 2; | |
10009 | else if (name == ansi_opname[(int) VEC_DELETE_EXPR]) | |
10010 | TYPE_GETS_DELETE (current_class_type) |= 2; | |
10011 | } | |
10012 | ||
10013 | if (name == ansi_opname[(int) NEW_EXPR] | |
10014 | || name == ansi_opname[(int) VEC_NEW_EXPR]) | |
8d08fdba | 10015 | { |
8d08fdba MS |
10016 | /* When the compiler encounters the definition of A::operator new, it |
10017 | doesn't look at the class declaration to find out if it's static. */ | |
a28e3c7f | 10018 | if (methodp) |
700f8a87 | 10019 | revert_static_member_fn (&decl, NULL, NULL); |
8d08fdba MS |
10020 | |
10021 | /* Take care of function decl if we had syntax errors. */ | |
10022 | if (argtypes == NULL_TREE) | |
10023 | TREE_TYPE (decl) = | |
10024 | build_function_type (ptr_type_node, | |
10025 | hash_tree_chain (integer_type_node, | |
10026 | void_list_node)); | |
10027 | else | |
a28e3c7f | 10028 | TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl)); |
8d08fdba | 10029 | } |
a28e3c7f MS |
10030 | else if (name == ansi_opname[(int) DELETE_EXPR] |
10031 | || name == ansi_opname[(int) VEC_DELETE_EXPR]) | |
8d08fdba | 10032 | { |
a28e3c7f | 10033 | if (methodp) |
700f8a87 | 10034 | revert_static_member_fn (&decl, NULL, NULL); |
8d08fdba MS |
10035 | |
10036 | if (argtypes == NULL_TREE) | |
10037 | TREE_TYPE (decl) = | |
10038 | build_function_type (void_type_node, | |
10039 | hash_tree_chain (ptr_type_node, | |
10040 | void_list_node)); | |
10041 | else | |
a28e3c7f MS |
10042 | { |
10043 | TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl)); | |
10044 | ||
10045 | if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR] | |
10046 | && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl))) | |
10047 | != void_list_node)) | |
10048 | TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1; | |
10049 | } | |
8d08fdba | 10050 | } |
8d08fdba MS |
10051 | else |
10052 | { | |
10053 | /* An operator function must either be a non-static member function | |
10054 | or have at least one parameter of a class, a reference to a class, | |
10055 | an enumeration, or a reference to an enumeration. 13.4.0.6 */ | |
700f8a87 | 10056 | if (! methodp || DECL_STATIC_FUNCTION_P (decl)) |
8d08fdba MS |
10057 | { |
10058 | if (OPERATOR_TYPENAME_P (name) | |
10059 | || name == ansi_opname[(int) CALL_EXPR] | |
10060 | || name == ansi_opname[(int) MODIFY_EXPR] | |
10061 | || name == ansi_opname[(int) COMPONENT_REF] | |
10062 | || name == ansi_opname[(int) ARRAY_REF]) | |
10063 | cp_error ("`%D' must be a nonstatic member function", decl); | |
10064 | else | |
10065 | { | |
10066 | tree p = argtypes; | |
10067 | ||
700f8a87 MS |
10068 | if (DECL_STATIC_FUNCTION_P (decl)) |
10069 | cp_error ("`%D' must be either a non-static member function or a non-member function", decl); | |
10070 | ||
8d08fdba MS |
10071 | if (p) |
10072 | for (; TREE_VALUE (p) != void_type_node ; p = TREE_CHAIN (p)) | |
10073 | { | |
10074 | tree arg = TREE_VALUE (p); | |
10075 | if (TREE_CODE (arg) == REFERENCE_TYPE) | |
10076 | arg = TREE_TYPE (arg); | |
10077 | ||
10078 | /* This lets bad template code slip through. */ | |
10079 | if (IS_AGGR_TYPE (arg) | |
10080 | || TREE_CODE (arg) == ENUMERAL_TYPE | |
10081 | || TREE_CODE (arg) == TEMPLATE_TYPE_PARM) | |
10082 | goto foundaggr; | |
10083 | } | |
10084 | cp_error | |
10085 | ("`%D' must have an argument of class or enumerated type", | |
10086 | decl); | |
10087 | foundaggr: | |
10088 | ; | |
10089 | } | |
10090 | } | |
10091 | ||
10092 | if (name == ansi_opname[(int) CALL_EXPR] | |
10093 | || name == ansi_opname[(int) METHOD_CALL_EXPR]) | |
10094 | return; /* no restrictions on args */ | |
10095 | ||
a0a33927 MS |
10096 | if (IDENTIFIER_TYPENAME_P (name)) |
10097 | { | |
10098 | tree t = TREE_TYPE (name); | |
10099 | if (TREE_CODE (t) == VOID_TYPE) | |
10100 | pedwarn ("void is not a valid type conversion operator"); | |
10101 | else if (! friendp) | |
10102 | { | |
10103 | int ref = (TREE_CODE (t) == REFERENCE_TYPE); | |
10104 | char *what = 0; | |
10105 | if (ref) | |
10106 | t = TYPE_MAIN_VARIANT (TREE_TYPE (t)); | |
10107 | ||
10108 | if (t == current_class_type) | |
10109 | what = "the same type"; | |
10110 | else if (IS_AGGR_TYPE (t) | |
10111 | && DERIVED_FROM_P (t, current_class_type)) | |
10112 | what = "a base class"; | |
10113 | ||
10114 | if (what) | |
10115 | warning ("conversion to %s%s will never use a type conversion operator", | |
10116 | ref ? "a reference to " : "", what); | |
10117 | } | |
10118 | } | |
10119 | ||
8d08fdba MS |
10120 | if (name == ansi_opname[(int) MODIFY_EXPR]) |
10121 | { | |
10122 | tree parmtype; | |
10123 | ||
10124 | if (list_length (argtypes) != 3 && methodp) | |
10125 | { | |
10126 | cp_error ("`%D' must take exactly one argument", decl); | |
10127 | return; | |
10128 | } | |
10129 | parmtype = TREE_VALUE (TREE_CHAIN (argtypes)); | |
10130 | ||
f0e01782 | 10131 | if (copy_assignment_arg_p (parmtype, virtualp) |
a28e3c7f | 10132 | && ! friendp) |
8d08fdba MS |
10133 | { |
10134 | TYPE_HAS_ASSIGN_REF (current_class_type) = 1; | |
f0e01782 MS |
10135 | if (TREE_CODE (parmtype) != REFERENCE_TYPE |
10136 | || TYPE_READONLY (TREE_TYPE (parmtype))) | |
8d08fdba MS |
10137 | TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1; |
10138 | } | |
10139 | } | |
10140 | else if (name == ansi_opname[(int) COND_EXPR]) | |
10141 | { | |
10142 | /* 13.4.0.3 */ | |
10143 | pedwarn ("ANSI C++ prohibits overloading operator ?:"); | |
10144 | if (list_length (argtypes) != 4) | |
10145 | cp_error ("`%D' must take exactly three arguments", decl); | |
10146 | } | |
10147 | else if (ambi_op_p (name)) | |
10148 | { | |
10149 | if (list_length (argtypes) == 2) | |
10150 | /* prefix */; | |
10151 | else if (list_length (argtypes) == 3) | |
10152 | { | |
10153 | if ((name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
10154 | || name == ansi_opname[(int) POSTDECREMENT_EXPR]) | |
10155 | && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node) | |
10156 | { | |
10157 | if (methodp) | |
10158 | cp_error ("postfix `%D' must take `int' as its argument", | |
10159 | decl); | |
10160 | else | |
10161 | cp_error | |
10162 | ("postfix `%D' must take `int' as its second argument", | |
10163 | decl); | |
10164 | } | |
10165 | } | |
10166 | else | |
10167 | { | |
10168 | if (methodp) | |
10169 | cp_error ("`%D' must take either zero or one argument", decl); | |
10170 | else | |
10171 | cp_error ("`%D' must take either one or two arguments", decl); | |
10172 | } | |
10173 | } | |
10174 | else if (unary_op_p (name)) | |
10175 | { | |
10176 | if (list_length (argtypes) != 2) | |
10177 | { | |
10178 | if (methodp) | |
10179 | cp_error ("`%D' must take `void'", decl); | |
10180 | else | |
10181 | cp_error ("`%D' must take exactly one argument", decl); | |
10182 | } | |
10183 | } | |
10184 | else /* if (binary_op_p (name)) */ | |
10185 | { | |
10186 | if (list_length (argtypes) != 3) | |
10187 | { | |
10188 | if (methodp) | |
10189 | cp_error ("`%D' must take exactly one argument", decl); | |
10190 | else | |
10191 | cp_error ("`%D' must take exactly two arguments", decl); | |
10192 | } | |
10193 | } | |
10194 | ||
10195 | /* 13.4.0.8 */ | |
10196 | if (argtypes) | |
10197 | for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes)) | |
10198 | if (TREE_PURPOSE (argtypes)) | |
10199 | { | |
10200 | TREE_PURPOSE (argtypes) = NULL_TREE; | |
10201 | if (name == ansi_opname[(int) POSTINCREMENT_EXPR] | |
10202 | || name == ansi_opname[(int) POSTDECREMENT_EXPR]) | |
10203 | { | |
10204 | if (pedantic) | |
10205 | cp_pedwarn ("`%D' cannot have default arguments", decl); | |
10206 | } | |
10207 | else | |
10208 | cp_error ("`%D' cannot have default arguments", decl); | |
10209 | } | |
10210 | } | |
10211 | } | |
10212 | \f | |
10213 | /* Get the struct, enum or union (CODE says which) with tag NAME. | |
10214 | Define the tag as a forward-reference if it is not defined. | |
10215 | ||
10216 | C++: If a class derivation is given, process it here, and report | |
10217 | an error if multiple derivation declarations are not identical. | |
10218 | ||
10219 | If this is a definition, come in through xref_tag and only look in | |
10220 | the current frame for the name (since C++ allows new names in any | |
10221 | scope.) */ | |
10222 | ||
8d08fdba MS |
10223 | tree |
10224 | xref_tag (code_type_node, name, binfo, globalize) | |
10225 | tree code_type_node; | |
10226 | tree name, binfo; | |
10227 | int globalize; | |
10228 | { | |
10229 | enum tag_types tag_code; | |
10230 | enum tree_code code; | |
10231 | int temp = 0; | |
8d08fdba MS |
10232 | register tree ref, t; |
10233 | struct binding_level *b = inner_binding_level; | |
10234 | ||
10235 | tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node); | |
10236 | switch (tag_code) | |
10237 | { | |
10238 | case record_type: | |
10239 | case class_type: | |
8d08fdba MS |
10240 | case signature_type: |
10241 | code = RECORD_TYPE; | |
8d08fdba MS |
10242 | break; |
10243 | case union_type: | |
10244 | code = UNION_TYPE; | |
8d08fdba MS |
10245 | break; |
10246 | case enum_type: | |
10247 | code = ENUMERAL_TYPE; | |
10248 | break; | |
10249 | default: | |
10250 | my_friendly_abort (18); | |
10251 | } | |
10252 | ||
10253 | /* If a cross reference is requested, look up the type | |
10254 | already defined for this tag and return it. */ | |
be99da77 MS |
10255 | if (TREE_CODE_CLASS (TREE_CODE (name)) == 't') |
10256 | { | |
10257 | t = name; | |
10258 | name = TYPE_NESTED_NAME (t); | |
10259 | } | |
10260 | else | |
10261 | t = IDENTIFIER_TYPE_VALUE (name); | |
a0a33927 MS |
10262 | if (t && TREE_CODE (t) != code) |
10263 | t = NULL_TREE; | |
10264 | ||
8ccc31eb | 10265 | if (! globalize) |
8d08fdba MS |
10266 | { |
10267 | /* If we know we are defining this tag, only look it up in this scope | |
10268 | * and don't try to find it as a type. */ | |
8ccc31eb MS |
10269 | if (t && TYPE_CONTEXT(t) && TREE_MANGLED (name)) |
10270 | ref = t; | |
8d08fdba MS |
10271 | else |
10272 | ref = lookup_tag (code, name, b, 1); | |
10273 | } | |
10274 | else | |
10275 | { | |
10276 | if (t) | |
10277 | ref = t; | |
10278 | else | |
10279 | ref = lookup_tag (code, name, b, 0); | |
10280 | ||
10281 | if (! ref) | |
10282 | { | |
10283 | /* Try finding it as a type declaration. If that wins, use it. */ | |
10284 | ref = lookup_name (name, 1); | |
10285 | if (ref && TREE_CODE (ref) == TYPE_DECL | |
10286 | && TREE_CODE (TREE_TYPE (ref)) == code) | |
10287 | ref = TREE_TYPE (ref); | |
10288 | else | |
10289 | ref = NULL_TREE; | |
10290 | } | |
10291 | } | |
10292 | ||
10293 | push_obstacks_nochange (); | |
10294 | ||
10295 | if (! ref) | |
10296 | { | |
10297 | /* If no such tag is yet defined, create a forward-reference node | |
10298 | and record it as the "definition". | |
10299 | When a real declaration of this type is found, | |
10300 | the forward-reference will be altered into a real type. */ | |
10301 | ||
10302 | /* In C++, since these migrate into the global scope, we must | |
10303 | build them on the permanent obstack. */ | |
10304 | ||
10305 | temp = allocation_temporary_p (); | |
10306 | if (temp) | |
10307 | end_temporary_allocation (); | |
10308 | ||
10309 | if (code == ENUMERAL_TYPE) | |
10310 | { | |
10311 | ref = make_node (ENUMERAL_TYPE); | |
10312 | ||
10313 | /* Give the type a default layout like unsigned int | |
10314 | to avoid crashing if it does not get defined. */ | |
10315 | TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node); | |
10316 | TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node); | |
10317 | TREE_UNSIGNED (ref) = 1; | |
10318 | TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node); | |
10319 | TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node); | |
10320 | TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node); | |
10321 | ||
10322 | /* Enable us to recognize when a type is created in class context. | |
10323 | To do nested classes correctly, this should probably be cleared | |
10324 | out when we leave this classes scope. Currently this in only | |
10325 | done in `start_enum'. */ | |
10326 | ||
10327 | pushtag (name, ref, globalize); | |
8d08fdba | 10328 | } |
8d08fdba MS |
10329 | else |
10330 | { | |
8d08fdba | 10331 | struct binding_level *old_b = class_binding_level; |
8d08fdba MS |
10332 | |
10333 | ref = make_lang_type (code); | |
10334 | ||
8d08fdba MS |
10335 | if (tag_code == signature_type) |
10336 | { | |
10337 | SET_SIGNATURE (ref); | |
f376e137 MS |
10338 | /* Since a signature type will be turned into the type |
10339 | of signature tables, it's not only an interface. */ | |
8d08fdba | 10340 | CLASSTYPE_INTERFACE_ONLY (ref) = 0; |
f376e137 MS |
10341 | SET_CLASSTYPE_INTERFACE_KNOWN (ref); |
10342 | /* A signature doesn't have a vtable. */ | |
00595019 | 10343 | CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0; |
8d08fdba MS |
10344 | } |
10345 | ||
8d08fdba MS |
10346 | #ifdef NONNESTED_CLASSES |
10347 | /* Class types don't nest the way enums do. */ | |
10348 | class_binding_level = (struct binding_level *)0; | |
10349 | #endif | |
10350 | pushtag (name, ref, globalize); | |
10351 | class_binding_level = old_b; | |
8d08fdba MS |
10352 | } |
10353 | } | |
10354 | else | |
10355 | { | |
8d08fdba MS |
10356 | /* If it no longer looks like a nested type, make sure it's |
10357 | in global scope. */ | |
10358 | if (b == global_binding_level && !class_binding_level | |
10359 | && IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE) | |
10360 | IDENTIFIER_GLOBAL_VALUE (name) = TYPE_NAME (ref); | |
8d08fdba MS |
10361 | } |
10362 | ||
10363 | if (binfo) | |
8ccc31eb | 10364 | xref_basetypes (code_type_node, name, ref, binfo); |
8d08fdba MS |
10365 | |
10366 | just_return: | |
10367 | ||
10368 | /* Until the type is defined, tentatively accept whatever | |
10369 | structure tag the user hands us. */ | |
10370 | if (TYPE_SIZE (ref) == NULL_TREE | |
10371 | && ref != current_class_type | |
10372 | /* Have to check this, in case we have contradictory tag info. */ | |
10373 | && IS_AGGR_TYPE_CODE (TREE_CODE (ref))) | |
10374 | { | |
10375 | if (tag_code == class_type) | |
10376 | CLASSTYPE_DECLARED_CLASS (ref) = 1; | |
10377 | else if (tag_code == record_type || tag_code == signature_type) | |
10378 | CLASSTYPE_DECLARED_CLASS (ref) = 0; | |
10379 | } | |
10380 | ||
10381 | pop_obstacks (); | |
10382 | ||
10383 | return ref; | |
10384 | } | |
8ccc31eb MS |
10385 | |
10386 | void | |
10387 | xref_basetypes (code_type_node, name, ref, binfo) | |
10388 | tree code_type_node; | |
10389 | tree name, ref; | |
10390 | tree binfo; | |
10391 | { | |
10392 | /* In the declaration `A : X, Y, ... Z' we mark all the types | |
10393 | (A, X, Y, ..., Z) so we can check for duplicates. */ | |
10394 | tree binfos; | |
10395 | int i, len; | |
10396 | enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node); | |
10397 | ||
10398 | if (tag_code == union_type) | |
10399 | { | |
10400 | cp_error ("derived union `%T' invalid", ref); | |
10401 | return; | |
10402 | } | |
10403 | ||
10404 | len = list_length (binfo); | |
10405 | push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref)); | |
10406 | ||
10407 | SET_CLASSTYPE_MARKED (ref); | |
10408 | BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len); | |
10409 | ||
10410 | for (i = 0; binfo; binfo = TREE_CHAIN (binfo)) | |
10411 | { | |
10412 | /* The base of a derived struct is public by default. */ | |
10413 | int via_public | |
be99da77 MS |
10414 | = (TREE_PURPOSE (binfo) == access_public_node |
10415 | || TREE_PURPOSE (binfo) == access_public_virtual_node | |
8ccc31eb | 10416 | || (tag_code != class_type |
be99da77 MS |
10417 | && (TREE_PURPOSE (binfo) == access_default_node |
10418 | || TREE_PURPOSE (binfo) == access_default_virtual_node))); | |
10419 | int via_protected = TREE_PURPOSE (binfo) == access_protected_node; | |
8ccc31eb | 10420 | int via_virtual |
be99da77 MS |
10421 | = (TREE_PURPOSE (binfo) == access_private_virtual_node |
10422 | || TREE_PURPOSE (binfo) == access_public_virtual_node | |
10423 | || TREE_PURPOSE (binfo) == access_default_virtual_node); | |
10424 | tree basetype = TREE_VALUE (binfo); | |
8ccc31eb MS |
10425 | tree base_binfo; |
10426 | ||
10427 | GNU_xref_hier (IDENTIFIER_POINTER (name), | |
10428 | IDENTIFIER_POINTER (TREE_VALUE (binfo)), | |
10429 | via_public, via_virtual, 0); | |
10430 | ||
10431 | if (basetype && TREE_CODE (basetype) == TYPE_DECL) | |
10432 | basetype = TREE_TYPE (basetype); | |
5566b478 MS |
10433 | if (!basetype |
10434 | || (TREE_CODE (basetype) != RECORD_TYPE | |
10435 | && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM)) | |
8ccc31eb MS |
10436 | { |
10437 | cp_error ("base type `%T' fails to be a struct or class type", | |
10438 | TREE_VALUE (binfo)); | |
10439 | continue; | |
10440 | } | |
10441 | #if 1 | |
10442 | /* This code replaces similar code in layout_basetypes. */ | |
5566b478 MS |
10443 | else if (TREE_CODE (basetype) != TEMPLATE_TYPE_PARM |
10444 | && TYPE_SIZE (complete_type (basetype)) == NULL_TREE) | |
8ccc31eb MS |
10445 | { |
10446 | cp_error ("base class `%T' has incomplete type", basetype); | |
10447 | continue; | |
10448 | } | |
10449 | #endif | |
10450 | else | |
10451 | { | |
10452 | if (CLASSTYPE_MARKED (basetype)) | |
10453 | { | |
10454 | if (basetype == ref) | |
10455 | cp_error ("recursive type `%T' undefined", basetype); | |
10456 | else | |
10457 | cp_error ("duplicate base type `%T' invalid", basetype); | |
10458 | continue; | |
10459 | } | |
10460 | ||
10461 | /* Note that the BINFO records which describe individual | |
10462 | inheritances are *not* shared in the lattice! They | |
10463 | cannot be shared because a given baseclass may be | |
10464 | inherited with different `accessibility' by different | |
10465 | derived classes. (Each BINFO record describing an | |
10466 | individual inheritance contains flags which say what | |
10467 | the `accessibility' of that particular inheritance is.) */ | |
10468 | ||
10469 | base_binfo = make_binfo (integer_zero_node, basetype, | |
10470 | TYPE_BINFO_VTABLE (basetype), | |
10471 | TYPE_BINFO_VIRTUALS (basetype), NULL_TREE); | |
10472 | ||
10473 | TREE_VEC_ELT (binfos, i) = base_binfo; | |
10474 | TREE_VIA_PUBLIC (base_binfo) = via_public; | |
10475 | TREE_VIA_PROTECTED (base_binfo) = via_protected; | |
10476 | TREE_VIA_VIRTUAL (base_binfo) = via_virtual; | |
10477 | BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref); | |
10478 | ||
10479 | SET_CLASSTYPE_MARKED (basetype); | |
9e9ff709 | 10480 | |
8ccc31eb MS |
10481 | /* We are free to modify these bits because they are meaningless |
10482 | at top level, and BASETYPE is a top-level type. */ | |
10483 | if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype)) | |
10484 | { | |
10485 | TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1; | |
10486 | TYPE_USES_COMPLEX_INHERITANCE (ref) = 1; | |
10487 | } | |
10488 | ||
10489 | TYPE_OVERLOADS_METHOD_CALL_EXPR (ref) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype); | |
10490 | TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype); | |
10491 | TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype); | |
10492 | CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype); | |
10493 | i += 1; | |
10494 | } | |
10495 | } | |
10496 | if (i) | |
10497 | TREE_VEC_LENGTH (binfos) = i; | |
10498 | else | |
10499 | BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE; | |
10500 | ||
10501 | if (i > 1) | |
10502 | TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1; | |
10503 | else if (i == 1) | |
10504 | TYPE_USES_MULTIPLE_INHERITANCE (ref) | |
10505 | = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0))); | |
10506 | if (TYPE_USES_MULTIPLE_INHERITANCE (ref)) | |
10507 | TYPE_USES_COMPLEX_INHERITANCE (ref) = 1; | |
10508 | ||
10509 | /* Unmark all the types. */ | |
10510 | while (--i >= 0) | |
10511 | CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i))); | |
10512 | CLEAR_CLASSTYPE_MARKED (ref); | |
10513 | ||
10514 | pop_obstacks (); | |
10515 | } | |
10516 | ||
8d08fdba MS |
10517 | \f |
10518 | static tree current_local_enum = NULL_TREE; | |
10519 | ||
10520 | /* Begin compiling the definition of an enumeration type. | |
10521 | NAME is its name (or null if anonymous). | |
10522 | Returns the type object, as yet incomplete. | |
10523 | Also records info about it so that build_enumerator | |
10524 | may be used to declare the individual values as they are read. */ | |
10525 | ||
10526 | tree | |
10527 | start_enum (name) | |
10528 | tree name; | |
10529 | { | |
10530 | register tree enumtype = NULL_TREE; | |
10531 | struct binding_level *b = inner_binding_level; | |
10532 | ||
10533 | /* If this is the real definition for a previous forward reference, | |
10534 | fill in the contents in the same object that used to be the | |
10535 | forward reference. */ | |
10536 | ||
10537 | if (name != NULL_TREE) | |
10538 | enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1); | |
10539 | ||
10540 | if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE) | |
10541 | cp_error ("multiple definition of enum `%T'", enumtype); | |
10542 | else | |
10543 | { | |
10544 | enumtype = make_node (ENUMERAL_TYPE); | |
10545 | pushtag (name, enumtype, 0); | |
10546 | } | |
10547 | ||
10548 | if (current_class_type) | |
10549 | TREE_ADDRESSABLE (b->tags) = 1; | |
10550 | current_local_enum = NULL_TREE; | |
10551 | ||
8d08fdba MS |
10552 | /* We copy this value because enumerated type constants |
10553 | are really of the type of the enumerator, not integer_type_node. */ | |
10554 | enum_next_value = copy_node (integer_zero_node); | |
7177d104 | 10555 | enum_overflow = 0; |
8d08fdba MS |
10556 | |
10557 | GNU_xref_decl (current_function_decl, enumtype); | |
10558 | return enumtype; | |
10559 | } | |
10560 | ||
10561 | /* After processing and defining all the values of an enumeration type, | |
10562 | install their decls in the enumeration type and finish it off. | |
10563 | ENUMTYPE is the type object and VALUES a list of name-value pairs. | |
10564 | Returns ENUMTYPE. */ | |
10565 | ||
10566 | tree | |
10567 | finish_enum (enumtype, values) | |
10568 | register tree enumtype, values; | |
10569 | { | |
f376e137 | 10570 | register tree minnode, maxnode; |
8d08fdba MS |
10571 | /* Calculate the maximum value of any enumerator in this type. */ |
10572 | ||
10573 | if (values) | |
10574 | { | |
f376e137 MS |
10575 | register tree pair; |
10576 | register tree value = DECL_INITIAL (TREE_VALUE (values)); | |
5566b478 MS |
10577 | |
10578 | if (! current_template_parms) | |
10579 | { | |
10580 | /* Speed up the main loop by performing some precalculations */ | |
10581 | TREE_TYPE (TREE_VALUE (values)) = enumtype; | |
10582 | TREE_TYPE (value) = enumtype; | |
10583 | minnode = maxnode = value; | |
10584 | } | |
f376e137 | 10585 | TREE_VALUE (values) = value; |
8d08fdba MS |
10586 | |
10587 | for (pair = TREE_CHAIN (values); pair; pair = TREE_CHAIN (pair)) | |
10588 | { | |
f376e137 | 10589 | value = DECL_INITIAL (TREE_VALUE (pair)); |
5566b478 MS |
10590 | if (! current_template_parms) |
10591 | { | |
10592 | TREE_TYPE (TREE_VALUE (pair)) = enumtype; | |
10593 | TREE_TYPE (value) = enumtype; | |
10594 | if (tree_int_cst_lt (maxnode, value)) | |
10595 | maxnode = value; | |
10596 | else if (tree_int_cst_lt (value, minnode)) | |
10597 | minnode = value; | |
10598 | } | |
f376e137 | 10599 | TREE_VALUE (pair) = value; |
8d08fdba MS |
10600 | } |
10601 | } | |
f376e137 MS |
10602 | else |
10603 | maxnode = minnode = integer_zero_node; | |
8d08fdba | 10604 | |
2986ae00 MS |
10605 | TYPE_VALUES (enumtype) = values; |
10606 | ||
5566b478 MS |
10607 | if (current_template_parms) |
10608 | return enumtype; | |
10609 | ||
f376e137 MS |
10610 | { |
10611 | int unsignedp = tree_int_cst_sgn (minnode) >= 0; | |
10612 | int lowprec = min_precision (minnode, unsignedp); | |
10613 | int highprec = min_precision (maxnode, unsignedp); | |
10614 | int precision = MAX (lowprec, highprec); | |
8d08fdba | 10615 | |
6060a796 | 10616 | TYPE_SIZE (enumtype) = NULL_TREE; |
13fbb038 | 10617 | |
8ccc31eb | 10618 | /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */ |
8d08fdba | 10619 | |
f376e137 | 10620 | TYPE_PRECISION (enumtype) = precision; |
f376e137 | 10621 | if (unsignedp) |
8d08fdba | 10622 | fixup_unsigned_type (enumtype); |
f376e137 MS |
10623 | else |
10624 | fixup_signed_type (enumtype); | |
8ccc31eb | 10625 | |
5566b478 | 10626 | if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node))) |
8ccc31eb MS |
10627 | /* Use the width of the narrowest normal C type which is wide enough. */ |
10628 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size | |
10629 | (precision, 1)); | |
10630 | else | |
10631 | TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node); | |
10632 | ||
10633 | TYPE_SIZE (enumtype) = 0; | |
10634 | layout_type (enumtype); | |
f376e137 | 10635 | } |
8d08fdba | 10636 | |
f376e137 MS |
10637 | { |
10638 | register tree tem; | |
10639 | ||
10640 | /* Fix up all variant types of this enum type. */ | |
10641 | for (tem = TYPE_MAIN_VARIANT (enumtype); tem; | |
10642 | tem = TYPE_NEXT_VARIANT (tem)) | |
10643 | { | |
10644 | TYPE_VALUES (tem) = TYPE_VALUES (enumtype); | |
10645 | TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype); | |
10646 | TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype); | |
10647 | TYPE_SIZE (tem) = TYPE_SIZE (enumtype); | |
10648 | TYPE_MODE (tem) = TYPE_MODE (enumtype); | |
10649 | TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype); | |
10650 | TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype); | |
10651 | TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype); | |
10652 | } | |
10653 | } | |
8d08fdba MS |
10654 | |
10655 | /* Finish debugging output for this type. */ | |
9e9ff709 | 10656 | rest_of_type_compilation (enumtype, global_bindings_p ()); |
8d08fdba MS |
10657 | |
10658 | return enumtype; | |
10659 | } | |
10660 | ||
10661 | /* Build and install a CONST_DECL for one value of the | |
10662 | current enumeration type (one that was begun with start_enum). | |
10663 | Return a tree-list containing the name and its value. | |
10664 | Assignment of sequential values by default is handled here. */ | |
10665 | ||
10666 | tree | |
10667 | build_enumerator (name, value) | |
10668 | tree name, value; | |
10669 | { | |
10670 | tree decl, result; | |
10671 | /* Change this to zero if we find VALUE is not shareable. */ | |
10672 | int shareable = 1; | |
10673 | ||
10674 | /* Remove no-op casts from the value. */ | |
10675 | if (value) | |
10676 | STRIP_TYPE_NOPS (value); | |
10677 | ||
5566b478 MS |
10678 | if (! current_template_parms) |
10679 | { | |
10680 | /* Validate and default VALUE. */ | |
10681 | if (value != NULL_TREE) | |
10682 | { | |
10683 | if (TREE_READONLY_DECL_P (value)) | |
10684 | { | |
10685 | value = decl_constant_value (value); | |
10686 | shareable = 0; | |
10687 | } | |
10688 | ||
10689 | if (TREE_CODE (value) == INTEGER_CST) | |
10690 | { | |
10691 | value = default_conversion (value); | |
10692 | constant_expression_warning (value); | |
10693 | } | |
10694 | else | |
10695 | { | |
10696 | cp_error ("enumerator value for `%D' not integer constant", name); | |
10697 | value = NULL_TREE; | |
10698 | } | |
10699 | } | |
10700 | ||
10701 | /* The order of things is reversed here so that we | |
10702 | can check for possible sharing of enum values, | |
10703 | to keep that from happening. */ | |
10704 | /* Default based on previous value. */ | |
10705 | if (value == NULL_TREE && ! current_template_parms) | |
10706 | { | |
10707 | value = enum_next_value; | |
10708 | if (enum_overflow) | |
10709 | cp_error ("overflow in enumeration values at `%D'", name); | |
10710 | } | |
10711 | ||
10712 | /* Remove no-op casts from the value. */ | |
10713 | if (value) | |
10714 | STRIP_TYPE_NOPS (value); | |
10715 | ||
10716 | /* Make up for hacks in lex.c. */ | |
10717 | if (value == integer_zero_node) | |
10718 | value = build_int_2 (0, 0); | |
10719 | else if (value == integer_one_node) | |
10720 | value = build_int_2 (1, 0); | |
10721 | else if (TREE_CODE (value) == INTEGER_CST | |
10722 | && (shareable == 0 | |
10723 | || TREE_CODE (TREE_TYPE (value)) == ENUMERAL_TYPE)) | |
10724 | { | |
10725 | value = copy_node (value); | |
10726 | TREE_TYPE (value) = integer_type_node; | |
10727 | } | |
10728 | } | |
8d08fdba | 10729 | |
8d08fdba MS |
10730 | /* C++ associates enums with global, function, or class declarations. */ |
10731 | ||
7177d104 MS |
10732 | decl = current_scope (); |
10733 | if (decl && decl == current_class_type) | |
8d08fdba MS |
10734 | { |
10735 | /* This enum declaration is local to the class, so we must put | |
10736 | it in that class's list of decls. */ | |
10737 | decl = build_lang_field_decl (CONST_DECL, name, integer_type_node); | |
10738 | DECL_INITIAL (decl) = value; | |
10739 | TREE_READONLY (decl) = 1; | |
10740 | pushdecl_class_level (decl); | |
10741 | TREE_CHAIN (decl) = current_local_enum; | |
10742 | current_local_enum = decl; | |
10743 | } | |
10744 | else | |
10745 | { | |
10746 | /* It's a global enum, or it's local to a function. (Note local to | |
10747 | a function could mean local to a class method. */ | |
10748 | decl = build_decl (CONST_DECL, name, integer_type_node); | |
10749 | DECL_INITIAL (decl) = value; | |
10750 | ||
10751 | pushdecl (decl); | |
10752 | GNU_xref_decl (current_function_decl, decl); | |
10753 | } | |
10754 | ||
5566b478 MS |
10755 | if (! current_template_parms) |
10756 | { | |
10757 | /* Set basis for default for next value. */ | |
10758 | enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value, | |
10759 | integer_one_node, PLUS_EXPR); | |
10760 | enum_overflow = tree_int_cst_lt (enum_next_value, value); | |
10761 | ||
10762 | if (enum_next_value == integer_one_node) | |
10763 | enum_next_value = copy_node (enum_next_value); | |
10764 | } | |
8d08fdba | 10765 | |
8d2733ca | 10766 | result = saveable_tree_cons (name, decl, NULL_TREE); |
8d08fdba MS |
10767 | return result; |
10768 | } | |
10769 | ||
10770 | tree | |
10771 | grok_enum_decls (type, decl) | |
10772 | tree type, decl; | |
10773 | { | |
10774 | tree d = current_local_enum; | |
10775 | ||
10776 | if (d == NULL_TREE) | |
10777 | return decl; | |
10778 | ||
10779 | while (1) | |
10780 | { | |
10781 | TREE_TYPE (d) = type; | |
10782 | if (TREE_CHAIN (d) == NULL_TREE) | |
10783 | { | |
10784 | TREE_CHAIN (d) = decl; | |
10785 | break; | |
10786 | } | |
10787 | d = TREE_CHAIN (d); | |
10788 | } | |
10789 | ||
10790 | decl = current_local_enum; | |
10791 | current_local_enum = NULL_TREE; | |
10792 | ||
10793 | return decl; | |
10794 | } | |
10795 | \f | |
5566b478 MS |
10796 | static int function_depth; |
10797 | ||
8d08fdba MS |
10798 | /* Create the FUNCTION_DECL for a function definition. |
10799 | DECLSPECS and DECLARATOR are the parts of the declaration; | |
10800 | they describe the function's name and the type it returns, | |
10801 | but twisted together in a fashion that parallels the syntax of C. | |
10802 | ||
10803 | This function creates a binding context for the function body | |
10804 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
10805 | ||
10806 | Returns 1 on success. If the DECLARATOR is not suitable for a function | |
10807 | (it defines a datum instead), we return 0, which tells | |
10808 | yyparse to report a parse error. | |
10809 | ||
10810 | For C++, we must first check whether that datum makes any sense. | |
10811 | For example, "class A local_a(1,2);" means that variable local_a | |
10812 | is an aggregate of type A, which should have a constructor | |
10813 | applied to it with the argument list [1, 2]. | |
10814 | ||
10815 | @@ There is currently no way to retrieve the storage | |
10816 | @@ allocated to FUNCTION (or all of its parms) if we return | |
10817 | @@ something we had previously. */ | |
10818 | ||
10819 | int | |
f30432d7 MS |
10820 | start_function (declspecs, declarator, raises, attrs, pre_parsed_p) |
10821 | tree declspecs, declarator, raises, attrs; | |
8d08fdba MS |
10822 | int pre_parsed_p; |
10823 | { | |
5566b478 | 10824 | tree decl1; |
8d08fdba MS |
10825 | tree ctype = NULL_TREE; |
10826 | tree fntype; | |
10827 | tree restype; | |
10828 | extern int have_extern_spec; | |
10829 | extern int used_extern_spec; | |
10830 | int doing_friend = 0; | |
10831 | ||
8d08fdba MS |
10832 | /* Sanity check. */ |
10833 | my_friendly_assert (TREE_VALUE (void_list_node) == void_type_node, 160); | |
10834 | my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161); | |
10835 | ||
10836 | /* Assume, until we see it does. */ | |
10837 | current_function_returns_value = 0; | |
10838 | current_function_returns_null = 0; | |
10839 | warn_about_return_type = 0; | |
fd378c9d JM |
10840 | named_labels = 0; |
10841 | shadowed_labels = 0; | |
8d08fdba MS |
10842 | current_function_assigns_this = 0; |
10843 | current_function_just_assigned_this = 0; | |
10844 | current_function_parms_stored = 0; | |
10845 | original_result_rtx = NULL_RTX; | |
a9aedbc2 | 10846 | base_init_expr = NULL_TREE; |
b7484fbe | 10847 | protect_list = NULL_TREE; |
79ff2c6c MS |
10848 | current_base_init_list = NULL_TREE; |
10849 | current_member_init_list = NULL_TREE; | |
f30432d7 | 10850 | ctor_label = dtor_label = NULL_TREE; |
8d08fdba MS |
10851 | |
10852 | clear_temp_name (); | |
10853 | ||
10854 | /* This should only be done once on the top most decl. */ | |
10855 | if (have_extern_spec && !used_extern_spec) | |
10856 | { | |
10857 | declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs); | |
10858 | used_extern_spec = 1; | |
10859 | } | |
10860 | ||
10861 | if (pre_parsed_p) | |
10862 | { | |
10863 | decl1 = declarator; | |
10864 | ||
10865 | if (! DECL_ARGUMENTS (decl1) | |
10866 | && !DECL_STATIC_FUNCTION_P (decl1) | |
10867 | && DECL_CONTEXT (decl1) | |
10868 | && DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1))) | |
10869 | && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1))))) | |
10870 | { | |
10871 | cp_error ("redeclaration of `%#D'", decl1); | |
10872 | if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1))) | |
10873 | cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1))); | |
10874 | else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1))) | |
10875 | cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1))); | |
10876 | } | |
10877 | ||
8d08fdba MS |
10878 | fntype = TREE_TYPE (decl1); |
10879 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
10880 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
10881 | ||
10882 | /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a | |
10883 | class is in the (lexical) scope of the class in which it is | |
10884 | defined. */ | |
10885 | if (!ctype && DECL_FRIEND_P (decl1)) | |
10886 | { | |
10887 | ctype = DECL_CLASS_CONTEXT (decl1); | |
10888 | ||
10889 | /* CTYPE could be null here if we're dealing with a template; | |
10890 | for example, `inline friend float foo()' inside a template | |
10891 | will have no CTYPE set. */ | |
10892 | if (ctype && TREE_CODE (ctype) != RECORD_TYPE) | |
10893 | ctype = NULL_TREE; | |
10894 | else | |
10895 | doing_friend = 1; | |
10896 | } | |
10897 | ||
8d08fdba MS |
10898 | raises = TYPE_RAISES_EXCEPTIONS (fntype); |
10899 | ||
10900 | /* In a fcn definition, arg types must be complete. */ | |
5566b478 | 10901 | require_complete_types_for_parms (DECL_ARGUMENTS (decl1)); |
9fffd093 RK |
10902 | |
10903 | /* In case some arg types were completed since the declaration was | |
10904 | parsed, fix up the decls. */ | |
10905 | { | |
5566b478 | 10906 | tree t = DECL_ARGUMENTS (decl1); |
9fffd093 RK |
10907 | for (; t; t = TREE_CHAIN (t)) |
10908 | layout_decl (t, 0); | |
10909 | } | |
5566b478 MS |
10910 | |
10911 | last_function_parms = DECL_ARGUMENTS (decl1); | |
10912 | last_function_parm_tags = NULL_TREE; | |
8d08fdba MS |
10913 | } |
10914 | else | |
10915 | { | |
f30432d7 MS |
10916 | decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, raises, |
10917 | NULL_TREE); | |
8d08fdba MS |
10918 | /* If the declarator is not suitable for a function definition, |
10919 | cause a syntax error. */ | |
10920 | if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0; | |
10921 | ||
10922 | fntype = TREE_TYPE (decl1); | |
10923 | ||
10924 | restype = TREE_TYPE (fntype); | |
10925 | if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype) | |
10926 | && ! CLASSTYPE_GOT_SEMICOLON (restype)) | |
10927 | { | |
10928 | cp_error ("semicolon missing after declaration of `%#T'", restype); | |
10929 | shadow_tag (build_tree_list (NULL_TREE, restype)); | |
10930 | CLASSTYPE_GOT_SEMICOLON (restype) = 1; | |
10931 | if (TREE_CODE (fntype) == FUNCTION_TYPE) | |
10932 | fntype = build_function_type (integer_type_node, | |
10933 | TYPE_ARG_TYPES (fntype)); | |
10934 | else | |
10935 | fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)), | |
10936 | integer_type_node, | |
10937 | TYPE_ARG_TYPES (fntype)); | |
10938 | TREE_TYPE (decl1) = fntype; | |
10939 | } | |
10940 | ||
10941 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
10942 | ctype = TYPE_METHOD_BASETYPE (fntype); | |
10943 | else if (IDENTIFIER_LENGTH (DECL_NAME (decl1)) == 4 | |
10944 | && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1)), "main") | |
10945 | && DECL_CONTEXT (decl1) == NULL_TREE) | |
10946 | { | |
10947 | /* If this doesn't return integer_type, complain. */ | |
10948 | if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node) | |
10949 | { | |
a28e3c7f | 10950 | if (pedantic || warn_return_type) |
5566b478 | 10951 | pedwarn ("return type for `main' changed to `int'"); |
8d08fdba MS |
10952 | TREE_TYPE (decl1) = fntype = default_function_type; |
10953 | } | |
10954 | warn_about_return_type = 0; | |
10955 | } | |
10956 | } | |
10957 | ||
10958 | /* Warn if function was previously implicitly declared | |
10959 | (but not if we warned then). */ | |
10960 | if (! warn_implicit | |
10961 | && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE) | |
10962 | cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1))); | |
10963 | ||
10964 | current_function_decl = decl1; | |
5566b478 MS |
10965 | /* Save the parm names or decls from this function's declarator |
10966 | where store_parm_decls will find them. */ | |
10967 | current_function_parms = last_function_parms; | |
10968 | current_function_parm_tags = last_function_parm_tags; | |
8d08fdba | 10969 | |
9e9ff709 | 10970 | announce_function (decl1); |
8d08fdba | 10971 | |
5566b478 | 10972 | if (! current_template_parms || ! uses_template_parms (TREE_TYPE (fntype))) |
8d08fdba | 10973 | { |
5566b478 MS |
10974 | if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE) |
10975 | { | |
10976 | cp_error ("return-type `%#T' is an incomplete type", | |
10977 | TREE_TYPE (fntype)); | |
8d08fdba | 10978 | |
5566b478 MS |
10979 | /* Make it return void instead, but don't change the |
10980 | type of the DECL_RESULT, in case we have a named return value. */ | |
10981 | if (ctype) | |
10982 | TREE_TYPE (decl1) | |
10983 | = build_cplus_method_type (build_type_variant (ctype, | |
10984 | TREE_READONLY (decl1), | |
10985 | TREE_SIDE_EFFECTS (decl1)), | |
10986 | void_type_node, | |
10987 | FUNCTION_ARG_CHAIN (decl1)); | |
10988 | else | |
10989 | TREE_TYPE (decl1) | |
10990 | = build_function_type (void_type_node, | |
10991 | TYPE_ARG_TYPES (TREE_TYPE (decl1))); | |
10992 | DECL_RESULT (decl1) | |
10993 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype))); | |
10994 | TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype)); | |
10995 | TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype)); | |
10996 | } | |
10997 | ||
10998 | if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype)) | |
10999 | && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype))) | |
11000 | abstract_virtuals_error (decl1, TREE_TYPE (fntype)); | |
11001 | } | |
b7484fbe | 11002 | |
8d08fdba MS |
11003 | if (warn_about_return_type) |
11004 | warning ("return-type defaults to `int'"); | |
11005 | ||
11006 | /* Make the init_value nonzero so pushdecl knows this is not tentative. | |
11007 | error_mark_node is replaced below (in poplevel) with the BLOCK. */ | |
11008 | DECL_INITIAL (decl1) = error_mark_node; | |
11009 | ||
8d08fdba MS |
11010 | /* This function exists in static storage. |
11011 | (This does not mean `static' in the C sense!) */ | |
11012 | TREE_STATIC (decl1) = 1; | |
11013 | ||
878cd289 MS |
11014 | /* Record the decl so that the function name is defined. |
11015 | If we already have a decl for this name, and it is a FUNCTION_DECL, | |
11016 | use the old decl. */ | |
11017 | ||
5566b478 MS |
11018 | if (current_template_parms) |
11019 | push_template_decl (decl1); | |
11020 | else if (pre_parsed_p == 0) | |
878cd289 | 11021 | { |
5566b478 | 11022 | decl1 = pushdecl (decl1); |
878cd289 MS |
11023 | DECL_MAIN_VARIANT (decl1) = decl1; |
11024 | fntype = TREE_TYPE (decl1); | |
11025 | } | |
5566b478 MS |
11026 | |
11027 | current_function_decl = decl1; | |
878cd289 | 11028 | |
db5ae43f | 11029 | if (DECL_INTERFACE_KNOWN (decl1)) |
faae18ab MS |
11030 | { |
11031 | if (DECL_NOT_REALLY_EXTERN (decl1)) | |
11032 | DECL_EXTERNAL (decl1) = 0; | |
11033 | } | |
8d08fdba MS |
11034 | /* If this function belongs to an interface, it is public. |
11035 | If it belongs to someone else's interface, it is also external. | |
11036 | It doesn't matter whether it's inline or not. */ | |
5566b478 MS |
11037 | else if (interface_unknown == 0 |
11038 | && (! DECL_TEMPLATE_INSTANTIATION (decl1) | |
11039 | || flag_external_templates)) | |
8d08fdba | 11040 | { |
5566b478 MS |
11041 | if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1) |
11042 | || current_template_parms) | |
db5ae43f MS |
11043 | DECL_EXTERNAL (decl1) |
11044 | = (interface_only | |
faae18ab | 11045 | || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines)); |
db5ae43f | 11046 | else |
faae18ab | 11047 | DECL_EXTERNAL (decl1) = 0; |
e8abc66f | 11048 | DECL_NOT_REALLY_EXTERN (decl1) = 0; |
db5ae43f | 11049 | DECL_INTERFACE_KNOWN (decl1) = 1; |
8d08fdba MS |
11050 | } |
11051 | else | |
a0a33927 MS |
11052 | { |
11053 | /* This is a definition, not a reference. | |
b7484fbe MS |
11054 | So clear DECL_EXTERNAL. */ |
11055 | DECL_EXTERNAL (decl1) = 0; | |
faae18ab | 11056 | |
5566b478 MS |
11057 | if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)) |
11058 | && ! DECL_INTERFACE_KNOWN (decl1) | |
11059 | /* Don't try to defer nested functions for now. */ | |
11060 | && ! decl_function_context (decl1)) | |
878cd289 MS |
11061 | DECL_DEFER_OUTPUT (decl1) = 1; |
11062 | else | |
11063 | { | |
11064 | DECL_INTERFACE_KNOWN (decl1) = 1; | |
11065 | if (DECL_C_STATIC (decl1)) | |
11066 | TREE_PUBLIC (decl1) = 0; | |
11067 | } | |
db5ae43f | 11068 | } |
a9aedbc2 | 11069 | |
8d08fdba MS |
11070 | if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1)) |
11071 | { | |
11072 | if (TREE_CODE (fntype) == METHOD_TYPE) | |
11073 | TREE_TYPE (decl1) = fntype | |
11074 | = build_function_type (TREE_TYPE (fntype), | |
11075 | TREE_CHAIN (TYPE_ARG_TYPES (fntype))); | |
5566b478 MS |
11076 | current_function_parms = TREE_CHAIN (current_function_parms); |
11077 | DECL_ARGUMENTS (decl1) = current_function_parms; | |
8d08fdba MS |
11078 | ctype = NULL_TREE; |
11079 | } | |
11080 | restype = TREE_TYPE (fntype); | |
11081 | ||
8d08fdba MS |
11082 | if (ctype) |
11083 | { | |
11084 | push_nested_class (ctype, 1); | |
11085 | ||
11086 | /* If we're compiling a friend function, neither of the variables | |
11087 | current_class_decl nor current_class_type will have values. */ | |
11088 | if (! doing_friend) | |
11089 | { | |
11090 | /* We know that this was set up by `grokclassfn'. | |
11091 | We do not wait until `store_parm_decls', since evil | |
11092 | parse errors may never get us to that point. Here | |
11093 | we keep the consistency between `current_class_type' | |
11094 | and `current_class_decl'. */ | |
5566b478 | 11095 | tree t = current_function_parms; |
5f34005f RK |
11096 | |
11097 | my_friendly_assert (t != NULL_TREE | |
11098 | && TREE_CODE (t) == PARM_DECL, 162); | |
11099 | ||
dff6b454 RK |
11100 | if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE) |
11101 | { | |
11102 | int i = suspend_momentary (); | |
11103 | ||
11104 | /* Fool build_indirect_ref. */ | |
11105 | current_class_decl = NULL_TREE; | |
11106 | C_C_D = build_indirect_ref (t, NULL_PTR); | |
11107 | current_class_decl = t; | |
11108 | resume_momentary (i); | |
11109 | } | |
11110 | else | |
11111 | /* We're having a signature pointer here. */ | |
11112 | C_C_D = current_class_decl = t; | |
11113 | ||
8d08fdba MS |
11114 | } |
11115 | } | |
11116 | else | |
11117 | { | |
11118 | if (DECL_STATIC_FUNCTION_P (decl1)) | |
11119 | push_nested_class (DECL_CONTEXT (decl1), 2); | |
11120 | else | |
11121 | push_memoized_context (0, 1); | |
5f34005f | 11122 | current_class_decl = C_C_D = NULL_TREE; |
8d08fdba MS |
11123 | } |
11124 | ||
db5ae43f MS |
11125 | pushlevel (0); |
11126 | current_binding_level->parm_flag = 1; | |
11127 | ||
db5ae43f MS |
11128 | GNU_xref_function (decl1, current_function_parms); |
11129 | ||
f30432d7 MS |
11130 | if (attrs) |
11131 | cplus_decl_attributes (decl1, NULL_TREE, attrs); | |
db5ae43f MS |
11132 | make_function_rtl (decl1); |
11133 | ||
8d08fdba MS |
11134 | /* Promote the value to int before returning it. */ |
11135 | if (C_PROMOTING_INTEGER_TYPE_P (restype)) | |
5566b478 MS |
11136 | restype = type_promotes_to (restype); |
11137 | ||
11138 | /* If this fcn was already referenced via a block-scope `extern' decl | |
11139 | (or an implicit decl), propagate certain information about the usage. */ | |
11140 | if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1))) | |
11141 | TREE_ADDRESSABLE (decl1) = 1; | |
11142 | ||
8d08fdba | 11143 | if (DECL_RESULT (decl1) == NULL_TREE) |
f30432d7 MS |
11144 | { |
11145 | DECL_RESULT (decl1) | |
11146 | = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype)); | |
11147 | TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype); | |
11148 | TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype); | |
11149 | } | |
8d08fdba | 11150 | |
5566b478 MS |
11151 | /* Allocate further tree nodes temporarily during compilation |
11152 | of this function only. Tiemann moved up here from bottom of fn. */ | |
11153 | temporary_allocation (); | |
11154 | ||
11155 | if (current_template_parms) | |
11156 | { | |
11157 | extern tree last_tree; | |
11158 | ++minimal_parse_mode; | |
11159 | last_tree = DECL_SAVED_TREE (decl1) | |
11160 | = build_nt (EXPR_STMT, void_zero_node); | |
11161 | } | |
11162 | ||
11163 | ++function_depth; | |
11164 | ||
f30432d7 MS |
11165 | if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1)) |
11166 | && DECL_LANGUAGE (decl1) == lang_cplusplus) | |
8d08fdba MS |
11167 | { |
11168 | dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
11169 | ctor_label = NULL_TREE; | |
11170 | } | |
11171 | else | |
11172 | { | |
11173 | dtor_label = NULL_TREE; | |
11174 | if (DECL_CONSTRUCTOR_P (decl1)) | |
11175 | ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
11176 | } | |
11177 | ||
8d08fdba MS |
11178 | return 1; |
11179 | } | |
11180 | \f | |
f30432d7 MS |
11181 | void |
11182 | expand_start_early_try_stmts () | |
11183 | { | |
11184 | rtx insns; | |
11185 | start_sequence (); | |
11186 | expand_start_try_stmts (); | |
11187 | insns = get_insns (); | |
11188 | end_sequence (); | |
11189 | store_in_parms (insns); | |
11190 | } | |
11191 | ||
11192 | void | |
11193 | store_in_parms (insns) | |
11194 | rtx insns; | |
11195 | { | |
11196 | rtx last_parm_insn; | |
11197 | ||
11198 | last_parm_insn = get_first_nonparm_insn (); | |
11199 | if (last_parm_insn == NULL_RTX) | |
11200 | emit_insns (insns); | |
11201 | else | |
11202 | emit_insns_before (insns, previous_insn (last_parm_insn)); | |
11203 | } | |
11204 | ||
8d08fdba MS |
11205 | /* Store the parameter declarations into the current function declaration. |
11206 | This is called after parsing the parameter declarations, before | |
11207 | digesting the body of the function. | |
11208 | ||
11209 | Also install to binding contour return value identifier, if any. */ | |
11210 | ||
11211 | void | |
11212 | store_parm_decls () | |
11213 | { | |
11214 | register tree fndecl = current_function_decl; | |
11215 | register tree parm; | |
11216 | int parms_have_cleanups = 0; | |
8d08fdba MS |
11217 | |
11218 | /* This is either a chain of PARM_DECLs (when a prototype is used). */ | |
11219 | tree specparms = current_function_parms; | |
11220 | ||
11221 | /* This is a list of types declared among parms in a prototype. */ | |
11222 | tree parmtags = current_function_parm_tags; | |
11223 | ||
11224 | /* This is a chain of any other decls that came in among the parm | |
11225 | declarations. If a parm is declared with enum {foo, bar} x; | |
11226 | then CONST_DECLs for foo and bar are put here. */ | |
11227 | tree nonparms = NULL_TREE; | |
11228 | ||
a9aedbc2 | 11229 | if (toplevel_bindings_p ()) |
8d08fdba MS |
11230 | fatal ("parse errors have confused me too much"); |
11231 | ||
11232 | /* Initialize RTL machinery. */ | |
11233 | init_function_start (fndecl, input_filename, lineno); | |
11234 | ||
11235 | /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */ | |
11236 | declare_function_name (); | |
11237 | ||
11238 | /* Create a binding level for the parms. */ | |
11239 | expand_start_bindings (0); | |
11240 | ||
8d08fdba MS |
11241 | if (specparms != NULL_TREE) |
11242 | { | |
11243 | /* This case is when the function was defined with an ANSI prototype. | |
11244 | The parms already have decls, so we need not do anything here | |
11245 | except record them as in effect | |
11246 | and complain if any redundant old-style parm decls were written. */ | |
11247 | ||
11248 | register tree next; | |
11249 | ||
11250 | /* Must clear this because it might contain TYPE_DECLs declared | |
11251 | at class level. */ | |
11252 | storedecls (NULL_TREE); | |
5566b478 | 11253 | |
8d08fdba MS |
11254 | for (parm = nreverse (specparms); parm; parm = next) |
11255 | { | |
11256 | next = TREE_CHAIN (parm); | |
11257 | if (TREE_CODE (parm) == PARM_DECL) | |
11258 | { | |
5566b478 | 11259 | tree cleanup; |
8d08fdba MS |
11260 | if (DECL_NAME (parm) == NULL_TREE) |
11261 | { | |
8d08fdba | 11262 | pushdecl (parm); |
8d08fdba MS |
11263 | } |
11264 | else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node) | |
11265 | cp_error ("parameter `%D' declared void", parm); | |
11266 | else | |
11267 | { | |
11268 | /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls. | |
11269 | A parameter is assumed not to have any side effects. | |
11270 | If this should change for any reason, then this | |
11271 | will have to wrap the bashed reference type in a save_expr. | |
11272 | ||
11273 | Also, if the parameter type is declared to be an X | |
11274 | and there is an X(X&) constructor, we cannot lay it | |
11275 | into the stack (any more), so we make this parameter | |
11276 | look like it is really of reference type. Functions | |
11277 | which pass parameters to this function will know to | |
11278 | create a temporary in their frame, and pass a reference | |
11279 | to that. */ | |
11280 | ||
11281 | if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE | |
11282 | && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm)))) | |
11283 | SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm)); | |
11284 | ||
11285 | pushdecl (parm); | |
11286 | } | |
5566b478 MS |
11287 | if (! current_template_parms |
11288 | && (cleanup = maybe_build_cleanup (parm), cleanup)) | |
8d08fdba MS |
11289 | { |
11290 | expand_decl (parm); | |
f30432d7 | 11291 | if (! cp_expand_decl_cleanup (parm, cleanup)) |
8d2733ca MS |
11292 | cp_error ("parser lost in parsing declaration of `%D'", |
11293 | parm); | |
8d08fdba MS |
11294 | parms_have_cleanups = 1; |
11295 | } | |
11296 | } | |
11297 | else | |
11298 | { | |
11299 | /* If we find an enum constant or a type tag, | |
11300 | put it aside for the moment. */ | |
11301 | TREE_CHAIN (parm) = NULL_TREE; | |
11302 | nonparms = chainon (nonparms, parm); | |
11303 | } | |
11304 | } | |
11305 | ||
11306 | /* Get the decls in their original chain order | |
11307 | and record in the function. This is all and only the | |
11308 | PARM_DECLs that were pushed into scope by the loop above. */ | |
11309 | DECL_ARGUMENTS (fndecl) = getdecls (); | |
11310 | ||
11311 | storetags (chainon (parmtags, gettags ())); | |
11312 | } | |
11313 | else | |
11314 | DECL_ARGUMENTS (fndecl) = NULL_TREE; | |
11315 | ||
11316 | /* Now store the final chain of decls for the arguments | |
11317 | as the decl-chain of the current lexical scope. | |
11318 | Put the enumerators in as well, at the front so that | |
11319 | DECL_ARGUMENTS is not modified. */ | |
11320 | ||
11321 | storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl))); | |
11322 | ||
11323 | /* Initialize the RTL code for the function. */ | |
11324 | DECL_SAVED_INSNS (fndecl) = NULL_RTX; | |
5566b478 MS |
11325 | if (! current_template_parms) |
11326 | expand_function_start (fndecl, parms_have_cleanups); | |
8d08fdba | 11327 | |
8d08fdba MS |
11328 | /* Create a binding contour which can be used to catch |
11329 | cleanup-generated temporaries. Also, if the return value needs or | |
11330 | has initialization, deal with that now. */ | |
11331 | if (parms_have_cleanups) | |
11332 | { | |
11333 | pushlevel (0); | |
11334 | expand_start_bindings (0); | |
11335 | } | |
11336 | ||
11337 | current_function_parms_stored = 1; | |
11338 | ||
8d08fdba MS |
11339 | /* If this function is `main', emit a call to `__main' |
11340 | to run global initializers, etc. */ | |
11341 | if (DECL_NAME (fndecl) | |
11342 | && IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4 | |
11343 | && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0 | |
11344 | && DECL_CONTEXT (fndecl) == NULL_TREE) | |
11345 | { | |
11346 | expand_main_function (); | |
8d08fdba | 11347 | } |
f30432d7 MS |
11348 | |
11349 | /* Take care of exception handling things. */ | |
5566b478 | 11350 | if (! current_template_parms && flag_handle_exceptions) |
f30432d7 MS |
11351 | { |
11352 | rtx insns; | |
11353 | start_sequence (); | |
11354 | ||
11355 | /* Mark the start of a stack unwinder if we need one. */ | |
11356 | start_eh_unwinder (); | |
11357 | ||
11358 | /* Do the starting of the exception specifications, if we have any. */ | |
11359 | if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl))) | |
11360 | expand_start_eh_spec (); | |
11361 | ||
11362 | insns = get_insns (); | |
11363 | end_sequence (); | |
11364 | ||
11365 | if (insns) | |
11366 | store_in_parms (insns); | |
11367 | } | |
72b7eeff | 11368 | last_dtor_insn = get_last_insn (); |
8d08fdba MS |
11369 | } |
11370 | ||
11371 | /* Bind a name and initialization to the return value of | |
11372 | the current function. */ | |
11373 | void | |
11374 | store_return_init (return_id, init) | |
11375 | tree return_id, init; | |
11376 | { | |
11377 | tree decl = DECL_RESULT (current_function_decl); | |
11378 | ||
e1cd6e56 | 11379 | if (pedantic) |
8d08fdba MS |
11380 | /* Give this error as many times as there are occurrences, |
11381 | so that users can use Emacs compilation buffers to find | |
11382 | and fix all such places. */ | |
8926095f | 11383 | pedwarn ("ANSI C++ does not permit named return values"); |
8d08fdba MS |
11384 | |
11385 | if (return_id != NULL_TREE) | |
11386 | { | |
11387 | if (DECL_NAME (decl) == NULL_TREE) | |
11388 | { | |
11389 | DECL_NAME (decl) = return_id; | |
11390 | DECL_ASSEMBLER_NAME (decl) = return_id; | |
11391 | } | |
11392 | else | |
11393 | error ("return identifier `%s' already in place", | |
11394 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
11395 | } | |
11396 | ||
11397 | /* Can't let this happen for constructors. */ | |
11398 | if (DECL_CONSTRUCTOR_P (current_function_decl)) | |
11399 | { | |
11400 | error ("can't redefine default return value for constructors"); | |
11401 | return; | |
11402 | } | |
11403 | ||
11404 | /* If we have a named return value, put that in our scope as well. */ | |
11405 | if (DECL_NAME (decl) != NULL_TREE) | |
11406 | { | |
11407 | /* If this named return value comes in a register, | |
11408 | put it in a pseudo-register. */ | |
11409 | if (DECL_REGISTER (decl)) | |
11410 | { | |
11411 | original_result_rtx = DECL_RTL (decl); | |
11412 | DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl)); | |
11413 | } | |
11414 | ||
82580166 | 11415 | /* Let `cp_finish_decl' know that this initializer is ok. */ |
8d08fdba MS |
11416 | DECL_INITIAL (decl) = init; |
11417 | pushdecl (decl); | |
82580166 | 11418 | cp_finish_decl (decl, init, NULL_TREE, 0, LOOKUP_ONLYCONVERTING); |
8d08fdba MS |
11419 | } |
11420 | } | |
11421 | ||
8d08fdba MS |
11422 | \f |
11423 | /* Finish up a function declaration and compile that function | |
11424 | all the way to assembler language output. The free the storage | |
11425 | for the function definition. | |
11426 | ||
11427 | This is called after parsing the body of the function definition. | |
11428 | LINENO is the current line number. | |
11429 | ||
11430 | C++: CALL_POPLEVEL is non-zero if an extra call to poplevel | |
11431 | (and expand_end_bindings) must be made to take care of the binding | |
11432 | contour for the base initializers. This is only relevant for | |
11433 | constructors. */ | |
11434 | ||
11435 | void | |
db5ae43f | 11436 | finish_function (lineno, call_poplevel, nested) |
8d08fdba MS |
11437 | int lineno; |
11438 | int call_poplevel; | |
db5ae43f | 11439 | int nested; |
8d08fdba MS |
11440 | { |
11441 | register tree fndecl = current_function_decl; | |
11442 | tree fntype, ctype = NULL_TREE; | |
f30432d7 | 11443 | rtx last_parm_insn, insns; |
8d08fdba MS |
11444 | /* Label to use if this function is supposed to return a value. */ |
11445 | tree no_return_label = NULL_TREE; | |
11446 | tree decls = NULL_TREE; | |
11447 | ||
11448 | /* When we get some parse errors, we can end up without a | |
11449 | current_function_decl, so cope. */ | |
11450 | if (fndecl == NULL_TREE) | |
11451 | return; | |
11452 | ||
5566b478 MS |
11453 | if (! nested && decl_function_context (fndecl) != NULL_TREE) |
11454 | nested = 1; | |
11455 | ||
8d08fdba MS |
11456 | fntype = TREE_TYPE (fndecl); |
11457 | ||
11458 | /* TREE_READONLY (fndecl) = 1; | |
11459 | This caused &foo to be of type ptr-to-const-function | |
11460 | which then got a warning when stored in a ptr-to-function variable. */ | |
11461 | ||
11462 | /* This happens on strange parse errors. */ | |
11463 | if (! current_function_parms_stored) | |
11464 | { | |
11465 | call_poplevel = 0; | |
11466 | store_parm_decls (); | |
11467 | } | |
11468 | ||
5566b478 | 11469 | if (current_template_parms) |
8d08fdba | 11470 | { |
5566b478 MS |
11471 | if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel) |
11472 | { | |
11473 | decls = getdecls (); | |
11474 | expand_end_bindings (decls, decls != NULL_TREE, 0); | |
11475 | poplevel (decls != NULL_TREE, 0, 0); | |
11476 | } | |
11477 | } | |
11478 | else | |
11479 | { | |
11480 | if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/) | |
8d08fdba | 11481 | { |
5566b478 MS |
11482 | tree ttype = target_type (fntype); |
11483 | tree parmdecl; | |
11484 | ||
8d08fdba MS |
11485 | if (IS_AGGR_TYPE (ttype)) |
11486 | /* Let debugger know it should output info for this type. */ | |
11487 | note_debug_info_needed (ttype); | |
5566b478 MS |
11488 | |
11489 | for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl)) | |
11490 | { | |
11491 | ttype = target_type (TREE_TYPE (parmdecl)); | |
11492 | if (IS_AGGR_TYPE (ttype)) | |
11493 | /* Let debugger know it should output info for this type. */ | |
11494 | note_debug_info_needed (ttype); | |
11495 | } | |
8d08fdba | 11496 | } |
8d08fdba | 11497 | |
5566b478 MS |
11498 | /* Clean house because we will need to reorder insns here. */ |
11499 | do_pending_stack_adjust (); | |
8d08fdba | 11500 | |
5566b478 | 11501 | if (dtor_label) |
8d08fdba | 11502 | { |
5566b478 MS |
11503 | tree binfo = TYPE_BINFO (current_class_type); |
11504 | tree cond = integer_one_node; | |
11505 | tree exprstmt; | |
11506 | tree in_charge_node = lookup_name (in_charge_identifier, 0); | |
11507 | tree virtual_size; | |
11508 | int ok_to_optimize_dtor = 0; | |
11509 | int empty_dtor = get_last_insn () == last_dtor_insn; | |
8d08fdba | 11510 | |
5566b478 MS |
11511 | if (current_function_assigns_this) |
11512 | cond = build (NE_EXPR, boolean_type_node, | |
11513 | current_class_decl, integer_zero_node); | |
11514 | else | |
11515 | { | |
11516 | int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type); | |
11517 | ||
11518 | /* If this destructor is empty, then we don't need to check | |
11519 | whether `this' is NULL in some cases. */ | |
11520 | if ((flag_this_is_variable & 1) == 0) | |
11521 | ok_to_optimize_dtor = 1; | |
11522 | else if (empty_dtor) | |
11523 | ok_to_optimize_dtor | |
11524 | = (n_baseclasses == 0 | |
11525 | || (n_baseclasses == 1 | |
11526 | && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0)))); | |
11527 | } | |
8d08fdba | 11528 | |
5566b478 MS |
11529 | /* These initializations might go inline. Protect |
11530 | the binding level of the parms. */ | |
11531 | pushlevel (0); | |
11532 | expand_start_bindings (0); | |
8d08fdba | 11533 | |
5566b478 MS |
11534 | if (current_function_assigns_this) |
11535 | { | |
11536 | current_function_assigns_this = 0; | |
11537 | current_function_just_assigned_this = 0; | |
11538 | } | |
8d08fdba | 11539 | |
5566b478 MS |
11540 | /* Generate the code to call destructor on base class. |
11541 | If this destructor belongs to a class with virtual | |
11542 | functions, then set the virtual function table | |
11543 | pointer to represent the type of our base class. */ | |
8d08fdba | 11544 | |
5566b478 MS |
11545 | /* This side-effect makes call to `build_delete' generate the |
11546 | code we have to have at the end of this destructor. */ | |
11547 | TYPE_HAS_DESTRUCTOR (current_class_type) = 0; | |
8d08fdba | 11548 | |
5566b478 MS |
11549 | /* These are two cases where we cannot delegate deletion. */ |
11550 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type) | |
11551 | || TYPE_GETS_REG_DELETE (current_class_type)) | |
11552 | exprstmt = build_delete (current_class_type, C_C_D, integer_zero_node, | |
11553 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0); | |
11554 | else | |
11555 | exprstmt = build_delete (current_class_type, C_C_D, in_charge_node, | |
11556 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0); | |
11557 | ||
11558 | /* If we did not assign to this, then `this' is non-zero at | |
11559 | the end of a destructor. As a special optimization, don't | |
11560 | emit test if this is an empty destructor. If it does nothing, | |
11561 | it does nothing. If it calls a base destructor, the base | |
11562 | destructor will perform the test. */ | |
11563 | ||
11564 | if (exprstmt != error_mark_node | |
11565 | && (TREE_CODE (exprstmt) != NOP_EXPR | |
11566 | || TREE_OPERAND (exprstmt, 0) != integer_zero_node | |
11567 | || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))) | |
8d08fdba | 11568 | { |
5566b478 MS |
11569 | expand_label (dtor_label); |
11570 | if (cond != integer_one_node) | |
11571 | expand_start_cond (cond, 0); | |
11572 | if (exprstmt != void_zero_node) | |
11573 | /* Don't call `expand_expr_stmt' if we're not going to do | |
11574 | anything, since -Wall will give a diagnostic. */ | |
11575 | expand_expr_stmt (exprstmt); | |
11576 | ||
11577 | /* Run destructor on all virtual baseclasses. */ | |
11578 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) | |
8d08fdba | 11579 | { |
5566b478 MS |
11580 | tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type))); |
11581 | expand_start_cond (build (BIT_AND_EXPR, integer_type_node, | |
11582 | in_charge_node, integer_two_node), 0); | |
11583 | while (vbases) | |
8d08fdba | 11584 | { |
5566b478 MS |
11585 | if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases))) |
11586 | { | |
11587 | tree ptr = convert_pointer_to_vbase (BINFO_TYPE (vbases), current_class_decl); | |
11588 | expand_expr_stmt (build_delete (build_pointer_type (BINFO_TYPE (vbases)), | |
11589 | ptr, integer_zero_node, | |
11590 | LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_HAS_IN_CHARGE, 0)); | |
11591 | } | |
11592 | vbases = TREE_CHAIN (vbases); | |
8d08fdba | 11593 | } |
5566b478 | 11594 | expand_end_cond (); |
8d08fdba | 11595 | } |
5566b478 MS |
11596 | |
11597 | do_pending_stack_adjust (); | |
11598 | if (cond != integer_one_node) | |
11599 | expand_end_cond (); | |
8d08fdba MS |
11600 | } |
11601 | ||
5566b478 MS |
11602 | TYPE_HAS_DESTRUCTOR (current_class_type) = 1; |
11603 | ||
11604 | virtual_size = c_sizeof (current_class_type); | |
11605 | ||
11606 | /* At the end, call delete if that's what's requested. */ | |
11607 | if (TYPE_GETS_REG_DELETE (current_class_type)) | |
11608 | /* This NOP_EXPR means we are in a static call context. */ | |
11609 | exprstmt = | |
11610 | build_method_call | |
11611 | (build_indirect_ref | |
11612 | (build1 (NOP_EXPR, build_pointer_type (current_class_type), | |
11613 | error_mark_node), | |
11614 | NULL_PTR), | |
11615 | ansi_opname[(int) DELETE_EXPR], | |
11616 | tree_cons (NULL_TREE, current_class_decl, | |
11617 | build_tree_list (NULL_TREE, virtual_size)), | |
11618 | NULL_TREE, LOOKUP_NORMAL); | |
11619 | else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) | |
11620 | exprstmt = build_x_delete (ptr_type_node, current_class_decl, 0, | |
11621 | virtual_size); | |
11622 | else | |
11623 | exprstmt = NULL_TREE; | |
8d08fdba | 11624 | |
5566b478 MS |
11625 | if (exprstmt) |
11626 | { | |
11627 | cond = build (BIT_AND_EXPR, integer_type_node, | |
11628 | in_charge_node, integer_one_node); | |
11629 | expand_start_cond (cond, 0); | |
11630 | expand_expr_stmt (exprstmt); | |
11631 | expand_end_cond (); | |
11632 | } | |
8d08fdba | 11633 | |
5566b478 MS |
11634 | /* End of destructor. */ |
11635 | expand_end_bindings (NULL_TREE, getdecls() != NULL_TREE, 0); | |
11636 | poplevel (2, 0, 0); /* XXX change to 1 */ | |
11637 | ||
11638 | /* Back to the top of destructor. */ | |
11639 | /* Dont execute destructor code if `this' is NULL. */ | |
11640 | ||
11641 | start_sequence (); | |
11642 | ||
11643 | /* If the dtor is empty, and we know there is not possible way we | |
11644 | could use any vtable entries, before they are possibly set by | |
11645 | a base class dtor, we don't have to setup the vtables, as we | |
11646 | know that any base class dtoring will set up any vtables it | |
11647 | needs. We avoid MI, because one base class dtor can do a | |
11648 | virtual dispatch to an overridden function that would need to | |
11649 | have a non-related vtable set up, we cannot avoid setting up | |
11650 | vtables in that case. We could change this to see if there is | |
11651 | just one vtable. */ | |
11652 | if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type)) | |
11653 | { | |
11654 | /* Make all virtual function table pointers in non-virtual base | |
11655 | classes point to CURRENT_CLASS_TYPE's virtual function | |
11656 | tables. */ | |
11657 | expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_decl); | |
8d08fdba | 11658 | |
5566b478 MS |
11659 | if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)) |
11660 | expand_indirect_vtbls_init (binfo, C_C_D, current_class_decl); | |
11661 | } | |
11662 | ||
11663 | if (! ok_to_optimize_dtor) | |
11664 | { | |
11665 | cond = build_binary_op (NE_EXPR, | |
11666 | current_class_decl, integer_zero_node, 1); | |
11667 | expand_start_cond (cond, 0); | |
11668 | } | |
8d08fdba | 11669 | |
5566b478 MS |
11670 | insns = get_insns (); |
11671 | end_sequence (); | |
f30432d7 | 11672 | |
5566b478 MS |
11673 | last_parm_insn = get_first_nonparm_insn (); |
11674 | if (last_parm_insn == NULL_RTX) | |
11675 | last_parm_insn = get_last_insn (); | |
11676 | else | |
11677 | last_parm_insn = previous_insn (last_parm_insn); | |
8d08fdba | 11678 | |
5566b478 | 11679 | emit_insns_after (insns, last_parm_insn); |
72b7eeff | 11680 | |
5566b478 MS |
11681 | if (! ok_to_optimize_dtor) |
11682 | expand_end_cond (); | |
72b7eeff | 11683 | } |
5566b478 | 11684 | else if (current_function_assigns_this) |
8d08fdba | 11685 | { |
5566b478 MS |
11686 | /* Does not need to call emit_base_init, because |
11687 | that is done (if needed) just after assignment to this | |
11688 | is seen. */ | |
11689 | ||
11690 | if (DECL_CONSTRUCTOR_P (current_function_decl)) | |
11691 | { | |
11692 | end_protect_partials (); | |
11693 | expand_label (ctor_label); | |
11694 | ctor_label = NULL_TREE; | |
11695 | ||
11696 | if (call_poplevel) | |
11697 | { | |
11698 | decls = getdecls (); | |
11699 | expand_end_bindings (decls, decls != NULL_TREE, 0); | |
11700 | poplevel (decls != NULL_TREE, 0, 0); | |
11701 | } | |
11702 | c_expand_return (current_class_decl); | |
11703 | } | |
11704 | else if (TYPE_MAIN_VARIANT (TREE_TYPE ( | |
11705 | DECL_RESULT (current_function_decl))) != void_type_node | |
11706 | && return_label != NULL_RTX) | |
11707 | no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
11708 | ||
11709 | current_function_assigns_this = 0; | |
11710 | current_function_just_assigned_this = 0; | |
11711 | base_init_expr = NULL_TREE; | |
8d08fdba | 11712 | } |
5566b478 MS |
11713 | else if (DECL_CONSTRUCTOR_P (fndecl)) |
11714 | { | |
11715 | tree cond, thenclause; | |
11716 | /* Allow constructor for a type to get a new instance of the object | |
11717 | using `build_new'. */ | |
11718 | tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type); | |
11719 | CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE; | |
f30432d7 | 11720 | |
5566b478 | 11721 | DECL_RETURNS_FIRST_ARG (fndecl) = 1; |
f30432d7 | 11722 | |
5566b478 MS |
11723 | if (flag_this_is_variable > 0) |
11724 | { | |
11725 | cond = build_binary_op (EQ_EXPR, | |
11726 | current_class_decl, integer_zero_node, 1); | |
11727 | thenclause = build_modify_expr (current_class_decl, NOP_EXPR, | |
11728 | build_new (NULL_TREE, current_class_type, void_type_node, 0)); | |
11729 | } | |
f30432d7 | 11730 | |
5566b478 | 11731 | CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals; |
f30432d7 | 11732 | |
5566b478 MS |
11733 | start_sequence (); |
11734 | ||
11735 | if (flag_this_is_variable > 0) | |
11736 | { | |
11737 | expand_start_cond (cond, 0); | |
11738 | expand_expr_stmt (thenclause); | |
11739 | expand_end_cond (); | |
11740 | } | |
11741 | ||
11742 | /* Emit insns from `emit_base_init' which sets up virtual | |
11743 | function table pointer(s). */ | |
11744 | if (base_init_expr) | |
11745 | { | |
11746 | expand_expr_stmt (base_init_expr); | |
11747 | base_init_expr = NULL_TREE; | |
11748 | } | |
11749 | ||
11750 | insns = get_insns (); | |
11751 | end_sequence (); | |
11752 | ||
11753 | /* This is where the body of the constructor begins. | |
11754 | If there were no insns in this function body, then the | |
11755 | last_parm_insn is also the last insn. | |
11756 | ||
11757 | If optimization is enabled, last_parm_insn may move, so | |
11758 | we don't hold on to it (across emit_base_init). */ | |
11759 | last_parm_insn = get_first_nonparm_insn (); | |
11760 | if (last_parm_insn == NULL_RTX) | |
11761 | last_parm_insn = get_last_insn (); | |
11762 | else | |
11763 | last_parm_insn = previous_insn (last_parm_insn); | |
11764 | ||
11765 | emit_insns_after (insns, last_parm_insn); | |
8d08fdba | 11766 | |
b7484fbe | 11767 | end_protect_partials (); |
5566b478 MS |
11768 | |
11769 | /* This is where the body of the constructor ends. */ | |
8d08fdba MS |
11770 | expand_label (ctor_label); |
11771 | ctor_label = NULL_TREE; | |
11772 | ||
11773 | if (call_poplevel) | |
11774 | { | |
11775 | decls = getdecls (); | |
8d08fdba | 11776 | expand_end_bindings (decls, decls != NULL_TREE, 0); |
5566b478 | 11777 | poplevel (decls != NULL_TREE, 1, 0); |
8d08fdba | 11778 | } |
8d08fdba | 11779 | |
5566b478 | 11780 | c_expand_return (current_class_decl); |
8d08fdba | 11781 | |
5566b478 MS |
11782 | current_function_assigns_this = 0; |
11783 | current_function_just_assigned_this = 0; | |
11784 | } | |
11785 | else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4 | |
11786 | && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") | |
11787 | && DECL_CONTEXT (fndecl) == NULL_TREE) | |
8d08fdba | 11788 | { |
5566b478 MS |
11789 | /* Make it so that `main' always returns 0 by default. */ |
11790 | #ifdef VMS | |
11791 | c_expand_return (integer_one_node); | |
11792 | #else | |
11793 | c_expand_return (integer_zero_node); | |
11794 | #endif | |
8d08fdba | 11795 | } |
5566b478 MS |
11796 | else if (return_label != NULL_RTX |
11797 | && current_function_return_value == NULL_TREE | |
11798 | && ! DECL_NAME (DECL_RESULT (current_function_decl))) | |
11799 | no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE); | |
8d08fdba | 11800 | |
5566b478 MS |
11801 | /* If this function is supposed to return a value, ensure that |
11802 | we do not fall into the cleanups by mistake. The end of our | |
11803 | function will look like this: | |
11804 | ||
11805 | user code (may have return stmt somewhere) | |
11806 | goto no_return_label | |
11807 | cleanup_label: | |
11808 | cleanups | |
11809 | goto return_label | |
11810 | no_return_label: | |
11811 | NOTE_INSN_FUNCTION_END | |
11812 | return_label: | |
11813 | things for return | |
11814 | ||
11815 | If the user omits a return stmt in the USER CODE section, we | |
11816 | will have a control path which reaches NOTE_INSN_FUNCTION_END. | |
11817 | Otherwise, we won't. */ | |
11818 | if (no_return_label) | |
8d08fdba | 11819 | { |
5566b478 MS |
11820 | DECL_CONTEXT (no_return_label) = fndecl; |
11821 | DECL_INITIAL (no_return_label) = error_mark_node; | |
11822 | DECL_SOURCE_FILE (no_return_label) = input_filename; | |
11823 | DECL_SOURCE_LINE (no_return_label) = lineno; | |
11824 | expand_goto (no_return_label); | |
8d08fdba MS |
11825 | } |
11826 | ||
5566b478 | 11827 | if (cleanup_label) |
a9aedbc2 | 11828 | { |
5566b478 MS |
11829 | /* remove the binding contour which is used |
11830 | to catch cleanup-generated temporaries. */ | |
11831 | expand_end_bindings (0, 0, 0); | |
11832 | poplevel (0, 0, 0); | |
a9aedbc2 | 11833 | } |
8d08fdba | 11834 | |
5566b478 MS |
11835 | if (cleanup_label) |
11836 | /* Emit label at beginning of cleanup code for parameters. */ | |
11837 | emit_label (cleanup_label); | |
b7484fbe | 11838 | |
5566b478 MS |
11839 | /* Get return value into register if that's where it's supposed to be. */ |
11840 | if (original_result_rtx) | |
11841 | fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx); | |
8d08fdba | 11842 | |
5566b478 MS |
11843 | /* Finish building code that will trigger warnings if users forget |
11844 | to make their functions return values. */ | |
11845 | if (no_return_label || cleanup_label) | |
11846 | emit_jump (return_label); | |
11847 | if (no_return_label) | |
8d08fdba | 11848 | { |
5566b478 MS |
11849 | /* We don't need to call `expand_*_return' here because we |
11850 | don't need any cleanups here--this path of code is only | |
11851 | for error checking purposes. */ | |
11852 | expand_label (no_return_label); | |
8d08fdba MS |
11853 | } |
11854 | ||
5566b478 MS |
11855 | /* Generate rtl for function exit. */ |
11856 | expand_function_end (input_filename, lineno, 1); | |
8d08fdba | 11857 | |
5566b478 MS |
11858 | if (flag_handle_exceptions) |
11859 | expand_exception_blocks (); | |
8d08fdba | 11860 | } |
8d2733ca | 11861 | |
8d08fdba MS |
11862 | /* This must come after expand_function_end because cleanups might |
11863 | have declarations (from inline functions) that need to go into | |
11864 | this function's blocks. */ | |
11865 | if (current_binding_level->parm_flag != 1) | |
11866 | my_friendly_abort (122); | |
11867 | poplevel (1, 0, 1); | |
11868 | ||
db5ae43f MS |
11869 | /* reset scope for C++: if we were in the scope of a class, |
11870 | then when we finish this function, we are not longer so. | |
11871 | This cannot be done until we know for sure that no more | |
11872 | class members will ever be referenced in this function | |
11873 | (i.e., calls to destructors). */ | |
11874 | if (current_class_name) | |
11875 | { | |
11876 | ctype = current_class_type; | |
11877 | pop_nested_class (1); | |
11878 | } | |
11879 | else | |
11880 | pop_memoized_context (1); | |
11881 | ||
8d08fdba MS |
11882 | /* Must mark the RESULT_DECL as being in this function. */ |
11883 | DECL_CONTEXT (DECL_RESULT (fndecl)) = DECL_INITIAL (fndecl); | |
11884 | ||
11885 | /* Obey `register' declarations if `setjmp' is called in this fn. */ | |
11886 | if (flag_traditional && current_function_calls_setjmp) | |
11887 | setjmp_protect (DECL_INITIAL (fndecl)); | |
11888 | ||
11889 | /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point | |
11890 | to the FUNCTION_DECL node itself. */ | |
11891 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
11892 | ||
5566b478 MS |
11893 | if (! current_template_parms) |
11894 | { | |
11895 | /* So we can tell if jump_optimize sets it to 1. */ | |
11896 | can_reach_end = 0; | |
8d08fdba | 11897 | |
5566b478 MS |
11898 | /* Run the optimizers and output the assembler code for this function. */ |
11899 | rest_of_compilation (fndecl); | |
8d08fdba | 11900 | |
5566b478 MS |
11901 | if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl)) |
11902 | { | |
11903 | /* Set DECL_EXTERNAL so that assemble_external will be called as | |
11904 | necessary. We'll clear it again in finish_file. */ | |
11905 | if (! DECL_EXTERNAL (fndecl)) | |
11906 | DECL_NOT_REALLY_EXTERN (fndecl) = 1; | |
11907 | DECL_EXTERNAL (fndecl) = 1; | |
11908 | mark_inline_for_output (fndecl); | |
11909 | } | |
8926095f | 11910 | |
5566b478 MS |
11911 | if (ctype && TREE_ASM_WRITTEN (fndecl)) |
11912 | note_debug_info_needed (ctype); | |
8d08fdba | 11913 | |
5566b478 | 11914 | current_function_returns_null |= can_reach_end; |
8d08fdba | 11915 | |
5566b478 MS |
11916 | /* Since we don't normally go through c_expand_return for constructors, |
11917 | this normally gets the wrong value. | |
11918 | Also, named return values have their return codes emitted after | |
11919 | NOTE_INSN_FUNCTION_END, confusing jump.c. */ | |
11920 | if (DECL_CONSTRUCTOR_P (fndecl) | |
11921 | || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE) | |
11922 | current_function_returns_null = 0; | |
8d08fdba | 11923 | |
5566b478 MS |
11924 | if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null) |
11925 | cp_warning ("`noreturn' function `%D' does return", fndecl); | |
11926 | else if ((warn_return_type || pedantic) | |
11927 | && current_function_returns_null | |
11928 | && TYPE_MAIN_VARIANT (TREE_TYPE (fntype)) != void_type_node) | |
11929 | { | |
11930 | /* If this function returns non-void and control can drop through, | |
11931 | complain. */ | |
11932 | cp_pedwarn ("control reaches end of non-void function `%D'", fndecl); | |
11933 | } | |
11934 | /* With just -W, complain only if function returns both with | |
11935 | and without a value. */ | |
11936 | else if (extra_warnings | |
11937 | && current_function_returns_value && current_function_returns_null) | |
11938 | warning ("this function may return with or without a value"); | |
8d08fdba | 11939 | } |
5566b478 MS |
11940 | |
11941 | --function_depth; | |
8d08fdba MS |
11942 | |
11943 | /* Free all the tree nodes making up this function. */ | |
11944 | /* Switch back to allocating nodes permanently | |
11945 | until we start another function. */ | |
5566b478 MS |
11946 | if (current_template_parms) |
11947 | { | |
11948 | --minimal_parse_mode; | |
11949 | DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl)); | |
11950 | } | |
11951 | ||
db5ae43f MS |
11952 | if (! nested) |
11953 | permanent_allocation (1); | |
8d08fdba | 11954 | |
8d08fdba MS |
11955 | if (DECL_SAVED_INSNS (fndecl) == NULL_RTX) |
11956 | { | |
11957 | /* Stop pointing to the local nodes about to be freed. */ | |
11958 | /* But DECL_INITIAL must remain nonzero so we know this | |
11959 | was an actual function definition. */ | |
11960 | DECL_INITIAL (fndecl) = error_mark_node; | |
5566b478 MS |
11961 | /* And we need the arguments for template instantiation. */ |
11962 | if (! current_template_parms) | |
11963 | { | |
11964 | if (! DECL_CONSTRUCTOR_P (fndecl) | |
11965 | || !(TYPE_USES_VIRTUAL_BASECLASSES | |
11966 | (TYPE_METHOD_BASETYPE (fntype)))) | |
11967 | DECL_ARGUMENTS (fndecl) = NULL_TREE; | |
11968 | } | |
8d08fdba MS |
11969 | } |
11970 | ||
e1cd6e56 MS |
11971 | if (DECL_STATIC_CONSTRUCTOR (fndecl)) |
11972 | static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors); | |
11973 | if (DECL_STATIC_DESTRUCTOR (fndecl)) | |
11974 | static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors); | |
11975 | ||
28cbf42c MS |
11976 | if (! nested) |
11977 | { | |
11978 | /* Let the error reporting routines know that we're outside a | |
11979 | function. For a nested function, this value is used in | |
11980 | pop_cp_function_context and then reset via pop_function_context. */ | |
11981 | current_function_decl = NULL_TREE; | |
11982 | } | |
11983 | ||
8d08fdba | 11984 | named_label_uses = NULL_TREE; |
dff6b454 | 11985 | current_class_decl = NULL_TREE; |
8d08fdba MS |
11986 | } |
11987 | \f | |
11988 | /* Create the FUNCTION_DECL for a function definition. | |
11989 | LINE1 is the line number that the definition absolutely begins on. | |
11990 | LINE2 is the line number that the name of the function appears on. | |
11991 | DECLSPECS and DECLARATOR are the parts of the declaration; | |
11992 | they describe the return type and the name of the function, | |
11993 | but twisted together in a fashion that parallels the syntax of C. | |
11994 | ||
11995 | This function creates a binding context for the function body | |
11996 | as well as setting up the FUNCTION_DECL in current_function_decl. | |
11997 | ||
11998 | Returns a FUNCTION_DECL on success. | |
11999 | ||
12000 | If the DECLARATOR is not suitable for a function (it defines a datum | |
12001 | instead), we return 0, which tells yyparse to report a parse error. | |
12002 | ||
12003 | May return void_type_node indicating that this method is actually | |
12004 | a friend. See grokfield for more details. | |
12005 | ||
12006 | Came here with a `.pushlevel' . | |
12007 | ||
12008 | DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING | |
12009 | CHANGES TO CODE IN `grokfield'. */ | |
12010 | tree | |
12011 | start_method (declspecs, declarator, raises) | |
12012 | tree declarator, declspecs, raises; | |
12013 | { | |
f30432d7 MS |
12014 | tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0, raises, |
12015 | NULL_TREE); | |
8d08fdba MS |
12016 | |
12017 | /* Something too ugly to handle. */ | |
12018 | if (fndecl == NULL_TREE) | |
12019 | return NULL_TREE; | |
12020 | ||
12021 | /* Pass friends other than inline friend functions back. */ | |
12022 | if (TYPE_MAIN_VARIANT (fndecl) == void_type_node) | |
12023 | return fndecl; | |
12024 | ||
12025 | if (TREE_CODE (fndecl) != FUNCTION_DECL) | |
12026 | /* Not a function, tell parser to report parse error. */ | |
12027 | return NULL_TREE; | |
12028 | ||
12029 | if (IS_SIGNATURE (current_class_type)) | |
12030 | { | |
12031 | IS_DEFAULT_IMPLEMENTATION (fndecl) = 1; | |
12032 | /* In case we need this info later. */ | |
12033 | HAS_DEFAULT_IMPLEMENTATION (current_class_type) = 1; | |
12034 | } | |
12035 | ||
12036 | if (DECL_IN_AGGR_P (fndecl)) | |
12037 | { | |
12038 | if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type) | |
12039 | { | |
12040 | if (DECL_CONTEXT (fndecl)) | |
12041 | cp_error ("`%D' is already defined in class %s", fndecl, | |
12042 | TYPE_NAME_STRING (DECL_CONTEXT (fndecl))); | |
12043 | } | |
12044 | return void_type_node; | |
12045 | } | |
12046 | ||
faae18ab MS |
12047 | DECL_THIS_INLINE (fndecl) = 1; |
12048 | ||
8926095f | 12049 | if (flag_default_inline) |
8d08fdba MS |
12050 | DECL_INLINE (fndecl) = 1; |
12051 | ||
5566b478 MS |
12052 | if (current_template_parms && ! current_function_decl) |
12053 | push_template_decl (fndecl); | |
a0a33927 | 12054 | |
8d08fdba MS |
12055 | /* We read in the parameters on the maybepermanent_obstack, |
12056 | but we won't be getting back to them until after we | |
12057 | may have clobbered them. So the call to preserve_data | |
12058 | will keep them safe. */ | |
12059 | preserve_data (); | |
12060 | ||
12061 | if (! DECL_FRIEND_P (fndecl)) | |
12062 | { | |
12063 | if (DECL_CHAIN (fndecl) != NULL_TREE) | |
12064 | { | |
12065 | /* Need a fresh node here so that we don't get circularity | |
12066 | when we link these together. If FNDECL was a friend, then | |
12067 | `pushdecl' does the right thing, which is nothing wrt its | |
12068 | current value of DECL_CHAIN. */ | |
12069 | fndecl = copy_node (fndecl); | |
12070 | } | |
12071 | if (TREE_CHAIN (fndecl)) | |
12072 | { | |
12073 | fndecl = copy_node (fndecl); | |
12074 | TREE_CHAIN (fndecl) = NULL_TREE; | |
12075 | } | |
12076 | ||
12077 | if (DECL_CONSTRUCTOR_P (fndecl)) | |
a0a33927 MS |
12078 | { |
12079 | if (! grok_ctor_properties (current_class_type, fndecl)) | |
12080 | return void_type_node; | |
12081 | } | |
8d08fdba MS |
12082 | else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl))) |
12083 | grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0); | |
12084 | } | |
12085 | ||
82580166 | 12086 | cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0); |
8d08fdba MS |
12087 | |
12088 | /* Make a place for the parms */ | |
12089 | pushlevel (0); | |
12090 | current_binding_level->parm_flag = 1; | |
12091 | ||
12092 | DECL_IN_AGGR_P (fndecl) = 1; | |
12093 | return fndecl; | |
12094 | } | |
12095 | ||
12096 | /* Go through the motions of finishing a function definition. | |
12097 | We don't compile this method until after the whole class has | |
12098 | been processed. | |
12099 | ||
12100 | FINISH_METHOD must return something that looks as though it | |
12101 | came from GROKFIELD (since we are defining a method, after all). | |
12102 | ||
12103 | This is called after parsing the body of the function definition. | |
12104 | STMTS is the chain of statements that makes up the function body. | |
12105 | ||
12106 | DECL is the ..._DECL that `start_method' provided. */ | |
12107 | ||
12108 | tree | |
12109 | finish_method (decl) | |
12110 | tree decl; | |
12111 | { | |
12112 | register tree fndecl = decl; | |
12113 | tree old_initial; | |
8d08fdba MS |
12114 | |
12115 | register tree link; | |
12116 | ||
12117 | if (TYPE_MAIN_VARIANT (decl) == void_type_node) | |
12118 | return decl; | |
12119 | ||
12120 | old_initial = DECL_INITIAL (fndecl); | |
12121 | ||
12122 | /* Undo the level for the parms (from start_method). | |
12123 | This is like poplevel, but it causes nothing to be | |
12124 | saved. Saving information here confuses symbol-table | |
12125 | output routines. Besides, this information will | |
12126 | be correctly output when this method is actually | |
12127 | compiled. */ | |
12128 | ||
12129 | /* Clear out the meanings of the local variables of this level; | |
12130 | also record in each decl which block it belongs to. */ | |
12131 | ||
12132 | for (link = current_binding_level->names; link; link = TREE_CHAIN (link)) | |
12133 | { | |
12134 | if (DECL_NAME (link) != NULL_TREE) | |
12135 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0; | |
12136 | my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163); | |
12137 | DECL_CONTEXT (link) = NULL_TREE; | |
12138 | } | |
12139 | ||
12140 | /* Restore all name-meanings of the outer levels | |
12141 | that were shadowed by this level. */ | |
12142 | ||
12143 | for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link)) | |
12144 | IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
12145 | for (link = current_binding_level->class_shadowed; | |
12146 | link; link = TREE_CHAIN (link)) | |
12147 | IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
12148 | for (link = current_binding_level->type_shadowed; | |
12149 | link; link = TREE_CHAIN (link)) | |
12150 | IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link); | |
12151 | ||
12152 | GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level, | |
12153 | (HOST_WIDE_INT) current_binding_level->level_chain, | |
12154 | current_binding_level->parm_flag, | |
5566b478 | 12155 | current_binding_level->keep); |
8d08fdba MS |
12156 | |
12157 | poplevel (0, 0, 0); | |
12158 | ||
12159 | DECL_INITIAL (fndecl) = old_initial; | |
12160 | ||
12161 | /* We used to check if the context of FNDECL was different from | |
12162 | current_class_type as another way to get inside here. This didn't work | |
12163 | for String.cc in libg++. */ | |
12164 | if (DECL_FRIEND_P (fndecl)) | |
12165 | { | |
12166 | CLASSTYPE_INLINE_FRIENDS (current_class_type) | |
12167 | = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type)); | |
12168 | decl = void_type_node; | |
12169 | } | |
12170 | ||
12171 | return decl; | |
12172 | } | |
12173 | \f | |
12174 | /* Called when a new struct TYPE is defined. | |
12175 | If this structure or union completes the type of any previous | |
12176 | variable declaration, lay it out and output its rtl. */ | |
12177 | ||
12178 | void | |
12179 | hack_incomplete_structures (type) | |
12180 | tree type; | |
12181 | { | |
f30432d7 | 12182 | tree *list; |
8d08fdba | 12183 | |
f30432d7 | 12184 | if (current_binding_level->incomplete == NULL_TREE) |
8d08fdba MS |
12185 | return; |
12186 | ||
12187 | if (!type) /* Don't do this for class templates. */ | |
12188 | return; | |
12189 | ||
f30432d7 MS |
12190 | for (list = ¤t_binding_level->incomplete; *list; ) |
12191 | { | |
12192 | tree decl = TREE_VALUE (*list); | |
12193 | if (decl && TREE_TYPE (decl) == type | |
12194 | || (TREE_TYPE (decl) | |
12195 | && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
12196 | && TREE_TYPE (TREE_TYPE (decl)) == type)) | |
12197 | { | |
12198 | int toplevel = toplevel_bindings_p (); | |
12199 | if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE | |
12200 | && TREE_TYPE (TREE_TYPE (decl)) == type) | |
12201 | layout_type (TREE_TYPE (decl)); | |
12202 | layout_decl (decl, 0); | |
12203 | rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0); | |
12204 | if (! toplevel) | |
12205 | { | |
12206 | tree cleanup; | |
12207 | expand_decl (decl); | |
12208 | cleanup = maybe_build_cleanup (decl); | |
12209 | expand_decl_init (decl); | |
12210 | if (! cp_expand_decl_cleanup (decl, cleanup)) | |
12211 | cp_error ("parser lost in parsing declaration of `%D'", | |
12212 | decl); | |
12213 | } | |
12214 | *list = TREE_CHAIN (*list); | |
12215 | } | |
12216 | else | |
12217 | list = &TREE_CHAIN (*list); | |
12218 | } | |
8d08fdba MS |
12219 | } |
12220 | ||
8d08fdba MS |
12221 | /* If DECL is of a type which needs a cleanup, build that cleanup here. |
12222 | We don't build cleanups if just going for syntax checking, since | |
12223 | fixup_cleanups does not know how to not handle them. | |
12224 | ||
12225 | Don't build these on the momentary obstack; they must live | |
12226 | the life of the binding contour. */ | |
12227 | tree | |
12228 | maybe_build_cleanup (decl) | |
12229 | tree decl; | |
12230 | { | |
12231 | tree type = TREE_TYPE (decl); | |
12232 | if (TYPE_NEEDS_DESTRUCTOR (type)) | |
12233 | { | |
12234 | int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR; | |
12235 | tree rval; | |
8d08fdba MS |
12236 | |
12237 | if (TREE_CODE (decl) != PARM_DECL) | |
12238 | temp = suspend_momentary (); | |
12239 | ||
12240 | if (TREE_CODE (type) == ARRAY_TYPE) | |
12241 | rval = decl; | |
12242 | else | |
12243 | { | |
12244 | mark_addressable (decl); | |
12245 | rval = build_unary_op (ADDR_EXPR, decl, 0); | |
12246 | } | |
12247 | ||
12248 | /* Optimize for space over speed here. */ | |
12249 | if (! TYPE_USES_VIRTUAL_BASECLASSES (type) | |
12250 | || flag_expensive_optimizations) | |
12251 | flags |= LOOKUP_NONVIRTUAL; | |
12252 | ||
8d08fdba MS |
12253 | rval = build_delete (TREE_TYPE (rval), rval, integer_two_node, flags, 0); |
12254 | ||
12255 | if (TYPE_USES_VIRTUAL_BASECLASSES (type) | |
12256 | && ! TYPE_HAS_DESTRUCTOR (type)) | |
12257 | rval = build_compound_expr (tree_cons (NULL_TREE, rval, | |
12258 | build_tree_list (NULL_TREE, build_vbase_delete (type, decl)))); | |
12259 | ||
72b7eeff MS |
12260 | /* Since this is a cleanup, UNSAVE it now. */ |
12261 | rval = unsave_expr (rval); | |
12262 | ||
8d08fdba MS |
12263 | if (TREE_CODE (decl) != PARM_DECL) |
12264 | resume_momentary (temp); | |
12265 | ||
8d08fdba MS |
12266 | return rval; |
12267 | } | |
12268 | return 0; | |
12269 | } | |
12270 | \f | |
12271 | /* Expand a C++ expression at the statement level. | |
12272 | This is needed to ferret out nodes which have UNKNOWN_TYPE. | |
12273 | The C++ type checker should get all of these out when | |
12274 | expressions are combined with other, type-providing, expressions, | |
12275 | leaving only orphan expressions, such as: | |
12276 | ||
12277 | &class::bar; / / takes its address, but does nothing with it. | |
12278 | ||
12279 | */ | |
12280 | void | |
12281 | cplus_expand_expr_stmt (exp) | |
12282 | tree exp; | |
12283 | { | |
72b7eeff MS |
12284 | extern int temp_slot_level; |
12285 | extern int target_temp_slot_level; | |
12286 | tree old_cleanups = cleanups_this_call; | |
12287 | int old_temp_level = target_temp_slot_level; | |
12288 | push_temp_slots (); | |
12289 | push_temp_slots (); | |
12290 | target_temp_slot_level = temp_slot_level; | |
12291 | ||
5566b478 MS |
12292 | if (current_template_parms) |
12293 | { | |
12294 | add_tree (build_min_nt (EXPR_STMT, exp)); | |
12295 | return; | |
12296 | } | |
12297 | ||
8d08fdba MS |
12298 | if (TREE_TYPE (exp) == unknown_type_node) |
12299 | { | |
12300 | if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST) | |
12301 | error ("address of overloaded function with no contextual type information"); | |
12302 | else if (TREE_CODE (exp) == COMPONENT_REF) | |
12303 | warning ("useless reference to a member function name, did you forget the ()?"); | |
12304 | } | |
12305 | else | |
12306 | { | |
8d08fdba MS |
12307 | if (TREE_CODE (exp) == FUNCTION_DECL) |
12308 | { | |
12309 | cp_warning ("reference, not call, to function `%D'", exp); | |
12310 | warning ("at this point in file"); | |
12311 | } | |
8d08fdba | 12312 | |
63c68bb7 MS |
12313 | #if 0 |
12314 | /* We should do this eventually, but right now this causes regex.o from | |
12315 | libg++ to miscompile, and tString to core dump. */ | |
5b605f68 | 12316 | exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp); |
63c68bb7 | 12317 | #endif |
8d08fdba | 12318 | expand_expr_stmt (break_out_cleanups (exp)); |
8d08fdba MS |
12319 | } |
12320 | ||
12321 | /* Clean up any pending cleanups. This happens when a function call | |
12322 | returns a cleanup-needing value that nobody uses. */ | |
72b7eeff MS |
12323 | expand_cleanups_to (old_cleanups); |
12324 | pop_temp_slots (); | |
12325 | pop_temp_slots (); | |
12326 | target_temp_slot_level = old_temp_level; | |
12327 | /* There might something left from building the trees. */ | |
12328 | if (cleanups_this_call) | |
12329 | { | |
12330 | expand_cleanups_to (NULL_TREE); | |
12331 | } | |
12332 | free_temp_slots (); | |
8d08fdba MS |
12333 | } |
12334 | ||
12335 | /* When a stmt has been parsed, this function is called. | |
12336 | ||
12337 | Currently, this function only does something within a | |
12338 | constructor's scope: if a stmt has just assigned to this, | |
12339 | and we are in a derived class, we call `emit_base_init'. */ | |
12340 | ||
12341 | void | |
12342 | finish_stmt () | |
12343 | { | |
12344 | extern struct nesting *cond_stack, *loop_stack, *case_stack; | |
12345 | ||
12346 | ||
12347 | if (current_function_assigns_this | |
12348 | || ! current_function_just_assigned_this) | |
12349 | return; | |
12350 | if (DECL_CONSTRUCTOR_P (current_function_decl)) | |
12351 | { | |
12352 | /* Constructors must wait until we are out of control | |
12353 | zones before calling base constructors. */ | |
12354 | if (cond_stack || loop_stack || case_stack) | |
12355 | return; | |
a9aedbc2 | 12356 | expand_expr_stmt (base_init_expr); |
8d08fdba MS |
12357 | check_base_init (current_class_type); |
12358 | } | |
12359 | current_function_assigns_this = 1; | |
8d08fdba MS |
12360 | } |
12361 | ||
8d08fdba | 12362 | /* Change a static member function definition into a FUNCTION_TYPE, instead |
700f8a87 MS |
12363 | of the METHOD_TYPE that we create when it's originally parsed. |
12364 | ||
12365 | WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES | |
12366 | (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of | |
12367 | other decls. Either pass the addresses of local variables or NULL. */ | |
12368 | ||
8d08fdba | 12369 | void |
700f8a87 MS |
12370 | revert_static_member_fn (decl, fn, argtypes) |
12371 | tree *decl, *fn, *argtypes; | |
8d08fdba | 12372 | { |
700f8a87 MS |
12373 | tree tmp; |
12374 | tree function = fn ? *fn : TREE_TYPE (*decl); | |
12375 | tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function); | |
8d08fdba | 12376 | |
f30432d7 MS |
12377 | if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args)))) |
12378 | cp_error ("static member function `%#D' declared const", *decl); | |
12379 | if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args)))) | |
12380 | cp_error ("static member function `%#D' declared volatile", *decl); | |
12381 | ||
700f8a87 MS |
12382 | args = TREE_CHAIN (args); |
12383 | tmp = build_function_type (TREE_TYPE (function), args); | |
8d08fdba MS |
12384 | tmp = build_type_variant (tmp, TYPE_READONLY (function), |
12385 | TYPE_VOLATILE (function)); | |
f30432d7 | 12386 | tmp = build_exception_variant (tmp, |
8d08fdba MS |
12387 | TYPE_RAISES_EXCEPTIONS (function)); |
12388 | TREE_TYPE (*decl) = tmp; | |
f30432d7 MS |
12389 | if (DECL_ARGUMENTS (*decl)) |
12390 | DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl)); | |
8d08fdba | 12391 | DECL_STATIC_FUNCTION_P (*decl) = 1; |
700f8a87 MS |
12392 | if (fn) |
12393 | *fn = tmp; | |
12394 | if (argtypes) | |
12395 | *argtypes = args; | |
8d08fdba | 12396 | } |
a4443a08 MS |
12397 | |
12398 | int | |
12399 | id_in_current_class (id) | |
12400 | tree id; | |
12401 | { | |
12402 | return !!purpose_member (id, class_binding_level->class_shadowed); | |
12403 | } | |
db5ae43f MS |
12404 | |
12405 | struct cp_function | |
12406 | { | |
12407 | int returns_value; | |
12408 | int returns_null; | |
12409 | int warn_about_return_type; | |
db5ae43f MS |
12410 | int assigns_this; |
12411 | int just_assigned_this; | |
12412 | int parms_stored; | |
7215f9a0 | 12413 | int temp_name_counter; |
db5ae43f MS |
12414 | tree named_labels; |
12415 | tree shadowed_labels; | |
12416 | tree ctor_label; | |
12417 | tree dtor_label; | |
72b7eeff | 12418 | rtx last_dtor_insn; |
b7484fbe | 12419 | tree protect_list; |
79ff2c6c MS |
12420 | tree base_init_list; |
12421 | tree member_init_list; | |
a9aedbc2 | 12422 | tree base_init_expr; |
5f34005f RK |
12423 | tree class_decl; |
12424 | tree C_C_D; | |
db5ae43f MS |
12425 | rtx result_rtx; |
12426 | struct cp_function *next; | |
12427 | struct binding_level *binding_level; | |
21451173 | 12428 | void* eh_context; |
db5ae43f MS |
12429 | }; |
12430 | ||
21451173 MS |
12431 | |
12432 | ||
db5ae43f MS |
12433 | struct cp_function *cp_function_chain; |
12434 | ||
7215f9a0 MS |
12435 | extern int temp_name_counter; |
12436 | ||
db5ae43f MS |
12437 | /* Save and reinitialize the variables |
12438 | used during compilation of a C++ function. */ | |
12439 | ||
12440 | void | |
28cbf42c MS |
12441 | push_cp_function_context (context) |
12442 | tree context; | |
db5ae43f MS |
12443 | { |
12444 | struct cp_function *p | |
12445 | = (struct cp_function *) xmalloc (sizeof (struct cp_function)); | |
12446 | ||
28cbf42c | 12447 | push_function_context_to (context); |
db5ae43f MS |
12448 | |
12449 | p->next = cp_function_chain; | |
12450 | cp_function_chain = p; | |
12451 | ||
12452 | p->named_labels = named_labels; | |
12453 | p->shadowed_labels = shadowed_labels; | |
12454 | p->returns_value = current_function_returns_value; | |
12455 | p->returns_null = current_function_returns_null; | |
12456 | p->warn_about_return_type = warn_about_return_type; | |
db5ae43f MS |
12457 | p->binding_level = current_binding_level; |
12458 | p->ctor_label = ctor_label; | |
12459 | p->dtor_label = dtor_label; | |
72b7eeff | 12460 | p->last_dtor_insn = last_dtor_insn; |
db5ae43f MS |
12461 | p->assigns_this = current_function_assigns_this; |
12462 | p->just_assigned_this = current_function_just_assigned_this; | |
12463 | p->parms_stored = current_function_parms_stored; | |
12464 | p->result_rtx = original_result_rtx; | |
a9aedbc2 | 12465 | p->base_init_expr = base_init_expr; |
b7484fbe | 12466 | p->protect_list = protect_list; |
7215f9a0 | 12467 | p->temp_name_counter = temp_name_counter; |
79ff2c6c MS |
12468 | p->base_init_list = current_base_init_list; |
12469 | p->member_init_list = current_member_init_list; | |
5f34005f RK |
12470 | p->class_decl = current_class_decl; |
12471 | p->C_C_D = C_C_D; | |
21451173 MS |
12472 | |
12473 | p->eh_context = push_eh_context (); | |
db5ae43f MS |
12474 | } |
12475 | ||
12476 | /* Restore the variables used during compilation of a C++ function. */ | |
12477 | ||
12478 | void | |
28cbf42c MS |
12479 | pop_cp_function_context (context) |
12480 | tree context; | |
db5ae43f MS |
12481 | { |
12482 | struct cp_function *p = cp_function_chain; | |
12483 | tree link; | |
12484 | ||
12485 | /* Bring back all the labels that were shadowed. */ | |
12486 | for (link = shadowed_labels; link; link = TREE_CHAIN (link)) | |
12487 | if (DECL_NAME (TREE_VALUE (link)) != 0) | |
12488 | SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)), | |
12489 | TREE_VALUE (link)); | |
12490 | ||
28cbf42c | 12491 | pop_function_context_from (context); |
db5ae43f MS |
12492 | |
12493 | cp_function_chain = p->next; | |
12494 | ||
12495 | named_labels = p->named_labels; | |
12496 | shadowed_labels = p->shadowed_labels; | |
12497 | current_function_returns_value = p->returns_value; | |
12498 | current_function_returns_null = p->returns_null; | |
12499 | warn_about_return_type = p->warn_about_return_type; | |
db5ae43f MS |
12500 | current_binding_level = p->binding_level; |
12501 | ctor_label = p->ctor_label; | |
12502 | dtor_label = p->dtor_label; | |
72b7eeff | 12503 | last_dtor_insn = p->last_dtor_insn; |
b7484fbe | 12504 | protect_list = p->protect_list; |
db5ae43f MS |
12505 | current_function_assigns_this = p->assigns_this; |
12506 | current_function_just_assigned_this = p->just_assigned_this; | |
12507 | current_function_parms_stored = p->parms_stored; | |
12508 | original_result_rtx = p->result_rtx; | |
a9aedbc2 | 12509 | base_init_expr = p->base_init_expr; |
7215f9a0 | 12510 | temp_name_counter = p->temp_name_counter; |
79ff2c6c MS |
12511 | current_base_init_list = p->base_init_list; |
12512 | current_member_init_list = p->member_init_list; | |
5f34005f RK |
12513 | current_class_decl = p->class_decl; |
12514 | C_C_D = p->C_C_D; | |
db5ae43f | 12515 | |
21451173 MS |
12516 | pop_eh_context (p->eh_context); |
12517 | ||
db5ae43f MS |
12518 | free (p); |
12519 | } | |
ebfc180f | 12520 | |
5566b478 MS |
12521 | int |
12522 | in_function_p () | |
12523 | { | |
12524 | return function_depth != 0; | |
12525 | } | |
12526 | ||
ebfc180f MS |
12527 | /* FSF LOCAL dje prefix attributes */ |
12528 | /* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two | |
12529 | lists. SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE). | |
12530 | ||
12531 | The head of the declspec list is stored in DECLSPECS. | |
12532 | The head of the attribute list is stored in PREFIX_ATTRIBUTES. | |
12533 | ||
12534 | Note that attributes in SPECS_ATTRS are stored in the TREE_PURPOSE of | |
12535 | the list elements. We drop the containing TREE_LIST nodes and link the | |
12536 | resulting attributes together the way decl_attributes expects them. */ | |
12537 | ||
12538 | void | |
12539 | split_specs_attrs (specs_attrs, declspecs, prefix_attributes) | |
12540 | tree specs_attrs; | |
12541 | tree *declspecs, *prefix_attributes; | |
12542 | { | |
12543 | tree t, s, a, next, specs, attrs; | |
12544 | ||
12545 | /* This can happen in c++ (eg: decl: typespec initdecls ';'). */ | |
12546 | if (specs_attrs != NULL_TREE | |
12547 | && TREE_CODE (specs_attrs) != TREE_LIST) | |
12548 | { | |
12549 | *declspecs = specs_attrs; | |
12550 | *prefix_attributes = NULL_TREE; | |
12551 | return; | |
12552 | } | |
12553 | ||
12554 | /* Remember to keep the lists in the same order, element-wise. */ | |
12555 | ||
12556 | specs = s = NULL_TREE; | |
12557 | attrs = a = NULL_TREE; | |
12558 | for (t = specs_attrs; t; t = next) | |
12559 | { | |
12560 | next = TREE_CHAIN (t); | |
12561 | /* Declspecs have a non-NULL TREE_VALUE. */ | |
12562 | if (TREE_VALUE (t) != NULL_TREE) | |
12563 | { | |
12564 | if (specs == NULL_TREE) | |
12565 | specs = s = t; | |
12566 | else | |
12567 | { | |
12568 | TREE_CHAIN (s) = t; | |
12569 | s = t; | |
12570 | } | |
12571 | } | |
12572 | else | |
12573 | { | |
12574 | if (attrs == NULL_TREE) | |
12575 | attrs = a = TREE_PURPOSE (t); | |
12576 | else | |
12577 | { | |
12578 | TREE_CHAIN (a) = TREE_PURPOSE (t); | |
12579 | a = TREE_PURPOSE (t); | |
12580 | } | |
12581 | } | |
12582 | } | |
12583 | ||
12584 | /* Terminate the lists. */ | |
12585 | if (s != NULL_TREE) | |
12586 | TREE_CHAIN (s) = NULL_TREE; | |
12587 | if (a != NULL_TREE) | |
12588 | TREE_CHAIN (a) = NULL_TREE; | |
12589 | ||
12590 | /* All done. */ | |
12591 | *declspecs = specs; | |
12592 | *prefix_attributes = attrs; | |
12593 | } | |
12594 | ||
12595 | /* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes. | |
12596 | This function is used by the parser when a rule will accept attributes | |
12597 | in a particular position, but we don't want to support that just yet. | |
12598 | ||
12599 | A warning is issued for every ignored attribute. */ | |
12600 | ||
12601 | tree | |
12602 | strip_attrs (specs_attrs) | |
12603 | tree specs_attrs; | |
12604 | { | |
12605 | tree specs, attrs; | |
12606 | ||
12607 | split_specs_attrs (specs_attrs, &specs, &attrs); | |
12608 | ||
12609 | while (attrs) | |
12610 | { | |
12611 | warning ("`%s' attribute ignored", | |
12612 | IDENTIFIER_POINTER (TREE_PURPOSE (attrs))); | |
12613 | attrs = TREE_CHAIN (attrs); | |
12614 | } | |
12615 | ||
12616 | return specs; | |
12617 | } | |
12618 | /* END FSF LOCAL */ | |
12619 |