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Commit | Line | Data |
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8d08fdba | 1 | /* Process declarations and variables for C compiler. |
d6a8bdff JL |
2 | Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
3 | 1999, 2000 Free Software Foundation, Inc. | |
8d08fdba MS |
4 | Hacked by Michael Tiemann (tiemann@cygnus.com) |
5 | ||
6 | This file is part of GNU CC. | |
7 | ||
8 | GNU CC is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU CC is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU CC; see the file COPYING. If not, write to | |
e9fa0c7c RK |
20 | the Free Software Foundation, 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ | |
8d08fdba MS |
22 | |
23 | ||
24 | /* Process declarations and symbol lookup for C front end. | |
25 | Also constructs types; the standard scalar types at initialization, | |
26 | and structure, union, array and enum types when they are declared. */ | |
27 | ||
28 | /* ??? not all decl nodes are given the most useful possible | |
29 | line numbers. For example, the CONST_DECLs for enum values. */ | |
30 | ||
31 | #include "config.h" | |
8d052bc7 | 32 | #include "system.h" |
8d08fdba MS |
33 | #include "tree.h" |
34 | #include "rtl.h" | |
35 | #include "flags.h" | |
36 | #include "cp-tree.h" | |
37 | #include "decl.h" | |
38 | #include "lex.h" | |
e8abc66f | 39 | #include "output.h" |
49c249e1 | 40 | #include "except.h" |
9f617717 | 41 | #include "expr.h" |
eb773359 | 42 | #include "defaults.h" |
54f92bfb | 43 | #include "toplev.h" |
bcb80729 KG |
44 | #include "dwarf2out.h" |
45 | #include "dwarfout.h" | |
fc6af6e3 | 46 | #include "ggc.h" |
2a9a326b | 47 | #include "timevar.h" |
49c249e1 | 48 | |
297441fd DB |
49 | #if USE_CPPLIB |
50 | #include "cpplib.h" | |
51 | extern cpp_reader parse_in; | |
297441fd DB |
52 | #endif |
53 | ||
0aafb128 MM |
54 | /* This structure contains information about the initializations |
55 | and/or destructions required for a particular priority level. */ | |
56 | typedef struct priority_info_s { | |
0352cfc8 MM |
57 | /* Non-zero if there have been any initializations at this priority |
58 | throughout the translation unit. */ | |
59 | int initializations_p; | |
60 | /* Non-zero if there have been any destructions at this priority | |
61 | throughout the translation unit. */ | |
62 | int destructions_p; | |
0aafb128 MM |
63 | } *priority_info; |
64 | ||
158991b7 KG |
65 | static tree get_sentry PARAMS ((tree)); |
66 | static void mark_vtable_entries PARAMS ((tree)); | |
67 | static void grok_function_init PARAMS ((tree, tree)); | |
68 | static int finish_vtable_vardecl PARAMS ((tree *, void *)); | |
69 | static int prune_vtable_vardecl PARAMS ((tree *, void *)); | |
70 | static int is_namespace_ancestor PARAMS ((tree, tree)); | |
71 | static void add_using_namespace PARAMS ((tree, tree, int)); | |
72 | static tree ambiguous_decl PARAMS ((tree, tree, tree,int)); | |
73 | static tree build_anon_union_vars PARAMS ((tree, tree*, int, int)); | |
74 | static int acceptable_java_type PARAMS ((tree)); | |
75 | static void output_vtable_inherit PARAMS ((tree)); | |
76 | static tree start_objects PARAMS ((int, int)); | |
77 | static void finish_objects PARAMS ((int, int, tree)); | |
78 | static tree merge_functions PARAMS ((tree, tree)); | |
79 | static tree decl_namespace PARAMS ((tree)); | |
80 | static tree validate_nonmember_using_decl PARAMS ((tree, tree *, tree *)); | |
81 | static void do_nonmember_using_decl PARAMS ((tree, tree, tree, tree, | |
d8e178a0 | 82 | tree *, tree *)); |
158991b7 KG |
83 | static tree start_static_storage_duration_function PARAMS ((void)); |
84 | static void finish_static_storage_duration_function PARAMS ((tree)); | |
85 | static priority_info get_priority_info PARAMS ((int)); | |
86 | static void do_static_initialization PARAMS ((tree, tree)); | |
87 | static void do_static_destruction PARAMS ((tree)); | |
88 | static tree start_static_initialization_or_destruction PARAMS ((tree, int)); | |
89 | static void finish_static_initialization_or_destruction PARAMS ((tree)); | |
90 | static void generate_ctor_or_dtor_function PARAMS ((int, int)); | |
0aafb128 | 91 | static int generate_ctor_and_dtor_functions_for_priority |
158991b7 KG |
92 | PARAMS ((splay_tree_node, void *)); |
93 | static tree prune_vars_needing_no_initialization PARAMS ((tree)); | |
94 | static void write_out_vars PARAMS ((tree)); | |
27d26ee7 | 95 | static void import_export_class PARAMS ((tree)); |
6db20143 | 96 | static tree key_method PARAMS ((tree)); |
313bc2c2 | 97 | |
cffa8729 | 98 | extern int current_class_depth; |
8d08fdba MS |
99 | |
100 | /* A list of virtual function tables we must make sure to write out. */ | |
101 | tree pending_vtables; | |
102 | ||
103 | /* A list of static class variables. This is needed, because a | |
104 | static class variable can be declared inside the class without | |
105 | an initializer, and then initialized, staticly, outside the class. */ | |
0aafb128 | 106 | static varray_type pending_statics; |
2c0f17dc MM |
107 | #define pending_statics_used \ |
108 | (pending_statics ? pending_statics->elements_used : 0) | |
8d08fdba | 109 | |
8926095f | 110 | /* A list of functions which were declared inline, but which we |
e92cc029 | 111 | may need to emit outline anyway. */ |
56e770bf MM |
112 | static varray_type deferred_fns; |
113 | #define deferred_fns_used \ | |
114 | (deferred_fns ? deferred_fns->elements_used : 0) | |
8d08fdba | 115 | |
8d08fdba MS |
116 | /* Same, but not reset. Local temp variables and global temp variables |
117 | can have the same name. */ | |
118 | static int global_temp_name_counter; | |
119 | ||
51c184be | 120 | /* Flag used when debugging spew.c */ |
8d08fdba MS |
121 | |
122 | extern int spew_debug; | |
e1cd6e56 | 123 | |
5566b478 MS |
124 | /* Nonzero if we're done parsing and into end-of-file activities. */ |
125 | ||
126 | int at_eof; | |
127 | ||
e1cd6e56 MS |
128 | /* Functions called along with real static constructors and destructors. */ |
129 | ||
130 | tree static_ctors, static_dtors; | |
30394414 | 131 | |
9cd64686 | 132 | /* The :: namespace. */ |
30394414 | 133 | |
30394414 JM |
134 | tree global_namespace; |
135 | ||
2c73f9f5 ML |
136 | /* The stack for namespaces of current declarations. */ |
137 | ||
138 | static tree decl_namespace_list; | |
139 | ||
8d08fdba MS |
140 | \f |
141 | /* C (and C++) language-specific option variables. */ | |
142 | ||
143 | /* Nonzero means allow type mismatches in conditional expressions; | |
144 | just make their values `void'. */ | |
145 | ||
146 | int flag_cond_mismatch; | |
147 | ||
148 | /* Nonzero means give `double' the same size as `float'. */ | |
149 | ||
150 | int flag_short_double; | |
151 | ||
152 | /* Nonzero means don't recognize the keyword `asm'. */ | |
153 | ||
154 | int flag_no_asm; | |
155 | ||
e1cd6e56 MS |
156 | /* Nonzero means don't recognize any extension keywords. */ |
157 | ||
158 | int flag_no_gnu_keywords; | |
159 | ||
8d08fdba MS |
160 | /* Nonzero means don't recognize the non-ANSI builtin functions. */ |
161 | ||
162 | int flag_no_builtin; | |
163 | ||
00595019 MS |
164 | /* Nonzero means don't recognize the non-ANSI builtin functions. |
165 | -ansi sets this. */ | |
166 | ||
167 | int flag_no_nonansi_builtin; | |
168 | ||
d22c8596 MS |
169 | /* Nonzero means do some things the same way PCC does. Only provided so |
170 | the compiler will link. */ | |
8d08fdba MS |
171 | |
172 | int flag_traditional; | |
173 | ||
174 | /* Nonzero means to treat bitfields as unsigned unless they say `signed'. */ | |
175 | ||
176 | int flag_signed_bitfields = 1; | |
177 | ||
cab1f180 ML |
178 | /* Nonzero means enable obscure standard features and disable GNU |
179 | extensions that might cause standard-compliant code to be | |
180 | miscompiled. */ | |
8d08fdba | 181 | |
e1cd6e56 | 182 | int flag_ansi; |
8d08fdba | 183 | |
8d08fdba MS |
184 | /* Nonzero means do emit exported implementations of functions even if |
185 | they can be inlined. */ | |
186 | ||
187 | int flag_implement_inlines = 1; | |
188 | ||
189 | /* Nonzero means do emit exported implementations of templates, instead of | |
e92cc029 | 190 | multiple static copies in each file that needs a definition. */ |
8d08fdba | 191 | |
e1cd6e56 | 192 | int flag_external_templates; |
8d08fdba MS |
193 | |
194 | /* Nonzero means that the decision to emit or not emit the implementation of a | |
195 | template depends on where the template is instantiated, rather than where | |
196 | it is defined. */ | |
197 | ||
e1cd6e56 | 198 | int flag_alt_external_templates; |
8d08fdba | 199 | |
a0a33927 MS |
200 | /* Nonzero means that implicit instantiations will be emitted if needed. */ |
201 | ||
202 | int flag_implicit_templates = 1; | |
203 | ||
5eea678f JM |
204 | /* Nonzero means that implicit instantiations of inline templates will be |
205 | emitted if needed, even if instantiations of non-inline templates | |
206 | aren't. */ | |
207 | ||
208 | int flag_implicit_inline_templates = 1; | |
209 | ||
8d08fdba MS |
210 | /* Nonzero means warn about implicit declarations. */ |
211 | ||
212 | int warn_implicit = 1; | |
213 | ||
795add94 VM |
214 | /* Nonzero means warn about usage of long long when `-pedantic'. */ |
215 | ||
216 | int warn_long_long = 1; | |
217 | ||
8d08fdba MS |
218 | /* Nonzero means warn when all ctors or dtors are private, and the class |
219 | has no friends. */ | |
220 | ||
221 | int warn_ctor_dtor_privacy = 1; | |
222 | ||
a80e4195 | 223 | /* True if we want to implement vtables using "thunks". |
6467930b | 224 | The default is off. */ |
8926095f | 225 | |
da20811c JM |
226 | #ifndef DEFAULT_VTABLE_THUNKS |
227 | #define DEFAULT_VTABLE_THUNKS 0 | |
c73964b2 | 228 | #endif |
da20811c | 229 | int flag_vtable_thunks = DEFAULT_VTABLE_THUNKS; |
51c184be | 230 | |
2aaf816d JM |
231 | /* Nonzero means generate separate instantiation control files and juggle |
232 | them at link time. */ | |
faae18ab MS |
233 | |
234 | int flag_use_repository; | |
235 | ||
dc8263bc JM |
236 | /* Nonzero if we want to issue diagnostics that the standard says are not |
237 | required. */ | |
238 | ||
239 | int flag_optional_diags = 1; | |
240 | ||
d9cf7c82 JM |
241 | /* Nonzero means give string constants the type `const char *', as mandated |
242 | by the standard. */ | |
243 | ||
244 | int flag_const_strings = 1; | |
245 | ||
f71f87f9 MM |
246 | /* If non-NULL, dump the tree structure for the entire translation |
247 | unit to this file. */ | |
248 | ||
249 | char *flag_dump_translation_unit = 0; | |
250 | ||
d9cf7c82 JM |
251 | /* Nonzero means warn about deprecated conversion from string constant to |
252 | `char *'. */ | |
8d08fdba MS |
253 | |
254 | int warn_write_strings; | |
255 | ||
256 | /* Nonzero means warn about pointer casts that can drop a type qualifier | |
257 | from the pointer target type. */ | |
258 | ||
259 | int warn_cast_qual; | |
260 | ||
8d08fdba MS |
261 | /* Nonzero means warn about sizeof(function) or addition/subtraction |
262 | of function pointers. */ | |
263 | ||
be99da77 | 264 | int warn_pointer_arith = 1; |
8d08fdba | 265 | |
8d08fdba MS |
266 | /* Nonzero means warn for any function def without prototype decl. */ |
267 | ||
268 | int warn_missing_prototypes; | |
269 | ||
270 | /* Nonzero means warn about multiple (redundant) decls for the same single | |
271 | variable or function. */ | |
272 | ||
273 | int warn_redundant_decls; | |
274 | ||
275 | /* Warn if initializer is not completely bracketed. */ | |
276 | ||
277 | int warn_missing_braces; | |
278 | ||
2ee887f2 MS |
279 | /* Warn about comparison of signed and unsigned values. */ |
280 | ||
281 | int warn_sign_compare; | |
282 | ||
1bdba2c0 DZ |
283 | /* Warn about testing equality of floating point numbers. */ |
284 | ||
285 | int warn_float_equal = 0; | |
286 | ||
e92cc029 | 287 | /* Warn about *printf or *scanf format/argument anomalies. */ |
8d08fdba MS |
288 | |
289 | int warn_format; | |
290 | ||
291 | /* Warn about a subscript that has type char. */ | |
292 | ||
293 | int warn_char_subscripts; | |
294 | ||
295 | /* Warn if a type conversion is done that might have confusing results. */ | |
296 | ||
297 | int warn_conversion; | |
298 | ||
299 | /* Warn if adding () is suggested. */ | |
300 | ||
e1cd6e56 | 301 | int warn_parentheses; |
8d08fdba MS |
302 | |
303 | /* Non-zero means warn in function declared in derived class has the | |
304 | same name as a virtual in the base class, but fails to match the | |
305 | type signature of any virtual function in the base class. */ | |
306 | int warn_overloaded_virtual; | |
307 | ||
308 | /* Non-zero means warn when declaring a class that has a non virtual | |
e92cc029 | 309 | destructor, when it really ought to have a virtual one. */ |
9a0e77ba | 310 | int warn_nonvdtor; |
8d08fdba MS |
311 | |
312 | /* Non-zero means warn when a function is declared extern and later inline. */ | |
313 | int warn_extern_inline; | |
314 | ||
f376e137 MS |
315 | /* Non-zero means warn when the compiler will reorder code. */ |
316 | int warn_reorder; | |
317 | ||
ddd5a7c1 | 318 | /* Non-zero means warn when synthesis behavior differs from Cfront's. */ |
f376e137 MS |
319 | int warn_synth; |
320 | ||
9a3b49ac MS |
321 | /* Non-zero means warn when we convert a pointer to member function |
322 | into a pointer to (void or function). */ | |
323 | int warn_pmf2ptr = 1; | |
324 | ||
eb448459 MS |
325 | /* Nonzero means warn about violation of some Effective C++ style rules. */ |
326 | ||
da20811c JM |
327 | int warn_ecpp; |
328 | ||
329 | /* Nonzero means warn where overload resolution chooses a promotion from | |
330 | unsigned to signed over a conversion to an unsigned of the same size. */ | |
331 | ||
332 | int warn_sign_promo; | |
eb448459 | 333 | |
0c4b14c4 JM |
334 | /* Nonzero means warn when an old-style cast is used. */ |
335 | ||
336 | int warn_old_style_cast; | |
337 | ||
f9fc59e8 NC |
338 | /* Warn about #pragma directives that are not recognised. */ |
339 | ||
dc8263bc JM |
340 | int warn_unknown_pragmas; /* Tri state variable. */ |
341 | ||
342 | /* Nonzero means warn about use of multicharacter literals. */ | |
343 | ||
344 | int warn_multichar = 1; | |
f9fc59e8 | 345 | |
7f84cec9 BK |
346 | /* Nonzero means warn when non-templatized friend functions are |
347 | declared within a template */ | |
348 | ||
349 | int warn_nontemplate_friend = 1; | |
350 | ||
2de45c06 ML |
351 | /* Nonzero means complain about deprecated features. */ |
352 | ||
353 | int warn_deprecated = 1; | |
354 | ||
4f6140be | 355 | /* Nonzero means `$' can be in an identifier. */ |
8d08fdba MS |
356 | |
357 | #ifndef DOLLARS_IN_IDENTIFIERS | |
358 | #define DOLLARS_IN_IDENTIFIERS 1 | |
359 | #endif | |
360 | int dollars_in_ident = DOLLARS_IN_IDENTIFIERS; | |
361 | ||
a3203465 | 362 | /* Nonzero for -fno-strict-prototype switch: do not consider empty |
8d08fdba MS |
363 | argument prototype to mean function takes no arguments. */ |
364 | ||
e1cd6e56 | 365 | int flag_strict_prototype = 2; |
8d08fdba MS |
366 | int strict_prototype = 1; |
367 | int strict_prototypes_lang_c, strict_prototypes_lang_cplusplus = 1; | |
368 | ||
369 | /* Nonzero means that labels can be used as first-class objects */ | |
370 | ||
371 | int flag_labels_ok; | |
372 | ||
d2c192ad JM |
373 | /* Nonzero means allow Microsoft extensions without a pedwarn. */ |
374 | ||
375 | int flag_ms_extensions; | |
376 | ||
8d08fdba MS |
377 | /* Non-zero means to collect statistics which might be expensive |
378 | and to print them when we are done. */ | |
379 | int flag_detailed_statistics; | |
380 | ||
381 | /* C++ specific flags. */ | |
8d08fdba MS |
382 | /* Zero means that `this' is a *const. This gives nice behavior in the |
383 | 2.0 world. 1 gives 1.2-compatible behavior. 2 gives Spring behavior. | |
384 | -2 means we're constructing an object and it has fixed type. */ | |
385 | ||
386 | int flag_this_is_variable; | |
387 | ||
56ae6d77 | 388 | /* Nonzero means we should attempt to elide constructors when possible. */ |
8d08fdba | 389 | |
56ae6d77 | 390 | int flag_elide_constructors = 1; |
8d08fdba | 391 | |
8d08fdba MS |
392 | /* Nonzero means that member functions defined in class scope are |
393 | inline by default. */ | |
394 | ||
395 | int flag_default_inline = 1; | |
396 | ||
db5ae43f | 397 | /* Controls whether compiler generates 'type descriptor' that give |
8d08fdba | 398 | run-time type information. */ |
6b5fbb55 | 399 | int flag_rtti = 1; |
8d08fdba MS |
400 | |
401 | /* Nonzero if we wish to output cross-referencing information | |
402 | for the GNU class browser. */ | |
403 | extern int flag_gnu_xref; | |
404 | ||
8d08fdba | 405 | /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes) |
e92cc029 | 406 | objects. */ |
e1cd6e56 | 407 | |
8d08fdba MS |
408 | int flag_huge_objects; |
409 | ||
410 | /* Nonzero if we want to conserve space in the .o files. We do this | |
411 | by putting uninitialized data and runtime initialized data into | |
ddd5a7c1 | 412 | .common instead of .data at the expense of not flagging multiple |
8d08fdba | 413 | definitions. */ |
e1cd6e56 | 414 | |
8d08fdba MS |
415 | int flag_conserve_space; |
416 | ||
eae89e04 | 417 | /* Nonzero if we want to obey access control semantics. */ |
e1cd6e56 | 418 | |
eae89e04 JM |
419 | int flag_access_control = 1; |
420 | ||
e1cd6e56 MS |
421 | /* Nonzero if we want to understand the operator names, i.e. 'bitand'. */ |
422 | ||
775afb25 | 423 | int flag_operator_names = 1; |
e1cd6e56 | 424 | |
d18c083e MS |
425 | /* Nonzero if we want to check the return value of new and avoid calling |
426 | constructors if it is a null pointer. */ | |
427 | ||
428 | int flag_check_new; | |
429 | ||
cab1f180 | 430 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' |
57c0c9ca PB |
431 | initialization variables. |
432 | 0: Old rules, set by -fno-for-scope. | |
cab1f180 ML |
433 | 2: New ISO rules, set by -ffor-scope. |
434 | 1: Try to implement new ISO rules, but with backup compatibility | |
57c0c9ca | 435 | (and warnings). This is the default, for now. */ |
863adfc0 MS |
436 | |
437 | int flag_new_for_scope = 1; | |
438 | ||
72b7eeff MS |
439 | /* Nonzero if we want to emit defined symbols with common-like linkage as |
440 | weak symbols where possible, in order to conform to C++ semantics. | |
441 | Otherwise, emit them as local symbols. */ | |
442 | ||
443 | int flag_weak = 1; | |
444 | ||
a59ca936 JM |
445 | /* Nonzero to enable experimental ABI changes. */ |
446 | ||
447 | int flag_new_abi; | |
732dcb6f | 448 | |
db4283a0 MM |
449 | /* Nonzero to use __cxa_atexit, rather than atexit, to register |
450 | destructors for local statics and global objects. */ | |
451 | ||
452 | int flag_use_cxa_atexit; | |
453 | ||
2c73f9f5 ML |
454 | /* Nonzero to not ignore namespace std. */ |
455 | ||
d312ec72 | 456 | int flag_honor_std = ENABLE_STD_NAMESPACE; |
2c73f9f5 | 457 | |
46e8c075 MM |
458 | /* Nonzero if we should expand functions calls inline at the tree |
459 | level, rather than at the RTL level. */ | |
460 | ||
461 | int flag_inline_trees = 0; | |
462 | ||
cab1f180 | 463 | /* Maximum template instantiation depth. Must be at least 17 for ISO |
e9f32eb5 MS |
464 | compliance. */ |
465 | ||
466 | int max_tinst_depth = 17; | |
467 | ||
386b8a85 JM |
468 | /* The name-mangling scheme to use. Must be 1 or greater to support |
469 | template functions with identical types, but different template | |
470 | arguments. */ | |
1d9ffce9 | 471 | int name_mangling_version = 2; |
386b8a85 JM |
472 | |
473 | /* Nonzero means that guiding declarations are allowed. */ | |
474 | int flag_guiding_decls; | |
475 | ||
5096c664 JM |
476 | /* Nonzero if wchar_t should be `unsigned short' instead of whatever it |
477 | would normally be, for use with WINE. */ | |
478 | int flag_short_wchar; | |
479 | ||
1d9ffce9 AM |
480 | /* Nonzero if squashed mangling is to be performed. |
481 | This uses the B and K codes to reference previously seen class types | |
482 | and class qualifiers. */ | |
483 | int flag_do_squangling; | |
484 | ||
a1dd0d36 JM |
485 | /* Nonzero means output .vtable_{entry,inherit} for use in doing vtable gc. */ |
486 | ||
487 | int flag_vtable_gc; | |
1d9ffce9 | 488 | |
2642b9bf JM |
489 | /* Nonzero means make the default pedwarns warnings instead of errors. |
490 | The value of this flag is ignored if -pedantic is specified. */ | |
491 | ||
492 | int flag_permissive; | |
493 | ||
1660cb3a JM |
494 | /* Nonzero means to implement standard semantics for exception |
495 | specifications, calling unexpected if an exception is thrown that | |
496 | doesn't match the specification. Zero means to treat them as | |
497 | assertions and optimize accordingly, but not check them. */ | |
498 | ||
499 | int flag_enforce_eh_specs = 1; | |
500 | ||
1b12a13e MM |
501 | /* If this variable is defined to a non-NULL value, it will be called |
502 | after the file has been completely parsed. */ | |
503 | ||
158991b7 | 504 | void (*back_end_hook) PARAMS ((tree)); |
1b12a13e | 505 | |
8d08fdba MS |
506 | /* Table of language-dependent -f options. |
507 | STRING is the option name. VARIABLE is the address of the variable. | |
508 | ON_VALUE is the value to store in VARIABLE | |
509 | if `-fSTRING' is seen as an option. | |
510 | (If `-fno-STRING' is seen as an option, the opposite value is stored.) */ | |
511 | ||
d8e178a0 KG |
512 | static struct { const char *string; int *variable; int on_value;} |
513 | lang_f_options[] = | |
8d08fdba | 514 | { |
e5b0708a | 515 | /* C/C++ options. */ |
8d08fdba MS |
516 | {"signed-char", &flag_signed_char, 1}, |
517 | {"unsigned-char", &flag_signed_char, 0}, | |
518 | {"signed-bitfields", &flag_signed_bitfields, 1}, | |
519 | {"unsigned-bitfields", &flag_signed_bitfields, 0}, | |
520 | {"short-enums", &flag_short_enums, 1}, | |
521 | {"short-double", &flag_short_double, 1}, | |
5096c664 | 522 | {"short-wchar", &flag_short_wchar, 1}, |
8d08fdba MS |
523 | {"cond-mismatch", &flag_cond_mismatch, 1}, |
524 | {"asm", &flag_no_asm, 0}, | |
525 | {"builtin", &flag_no_builtin, 0}, | |
e5b0708a JM |
526 | |
527 | /* C++-only options. */ | |
528 | {"access-control", &flag_access_control, 1}, | |
529 | {"check-new", &flag_check_new, 1}, | |
530 | {"conserve-space", &flag_conserve_space, 1}, | |
d9cf7c82 | 531 | {"const-strings", &flag_const_strings, 1}, |
e5b0708a JM |
532 | {"default-inline", &flag_default_inline, 1}, |
533 | {"dollars-in-identifiers", &dollars_in_ident, 1}, | |
8d08fdba | 534 | {"elide-constructors", &flag_elide_constructors, 1}, |
1660cb3a | 535 | {"enforce-eh-specs", &flag_enforce_eh_specs, 1}, |
e5b0708a JM |
536 | {"external-templates", &flag_external_templates, 1}, |
537 | {"for-scope", &flag_new_for_scope, 2}, | |
538 | {"gnu-keywords", &flag_no_gnu_keywords, 0}, | |
da20811c | 539 | {"handle-exceptions", &flag_exceptions, 1}, |
2c73f9f5 | 540 | {"honor-std", &flag_honor_std, 1}, |
e5b0708a | 541 | {"huge-objects", &flag_huge_objects, 1}, |
8d08fdba | 542 | {"implement-inlines", &flag_implement_inlines, 1}, |
5eea678f | 543 | {"implicit-inline-templates", &flag_implicit_inline_templates, 1}, |
e5b0708a | 544 | {"implicit-templates", &flag_implicit_templates, 1}, |
e5b0708a | 545 | {"labels-ok", &flag_labels_ok, 1}, |
d2c192ad | 546 | {"ms-extensions", &flag_ms_extensions, 1}, |
e1cd6e56 | 547 | {"nonansi-builtins", &flag_no_nonansi_builtin, 0}, |
d18c083e | 548 | {"operator-names", &flag_operator_names, 1}, |
dc8263bc | 549 | {"optional-diags", &flag_optional_diags, 1}, |
2642b9bf | 550 | {"permissive", &flag_permissive, 1}, |
863adfc0 | 551 | {"repo", &flag_use_repository, 1}, |
e5b0708a JM |
552 | {"rtti", &flag_rtti, 1}, |
553 | {"squangle", &flag_do_squangling, 1}, | |
554 | {"stats", &flag_detailed_statistics, 1}, | |
555 | {"strict-prototype", &flag_strict_prototype, 1}, | |
db4283a0 | 556 | {"use-cxa-atexit", &flag_use_cxa_atexit, 1}, |
e5b0708a JM |
557 | {"vtable-gc", &flag_vtable_gc, 1}, |
558 | {"vtable-thunks", &flag_vtable_thunks, 1}, | |
559 | {"weak", &flag_weak, 1}, | |
560 | {"xref", &flag_gnu_xref, 1} | |
8d08fdba MS |
561 | }; |
562 | ||
563 | /* Decode the string P as a language-specific option. | |
297441fd | 564 | Return the number of strings consumed for a valid option. |
03d32d1a NC |
565 | Otherwise return 0. Should not complain if it does not |
566 | recognise the option. */ | |
8d08fdba MS |
567 | |
568 | int | |
297441fd | 569 | lang_decode_option (argc, argv) |
b370501f KG |
570 | int argc |
571 | #if !USE_CPPLIB | |
572 | ATTRIBUTE_UNUSED | |
573 | #endif | |
574 | ; | |
297441fd | 575 | char **argv; |
8d08fdba | 576 | { |
297441fd DB |
577 | int strings_processed; |
578 | char *p = argv[0]; | |
579 | #if USE_CPPLIB | |
297441fd DB |
580 | strings_processed = cpp_handle_option (&parse_in, argc, argv); |
581 | #else | |
582 | strings_processed = 0; | |
583 | #endif /* ! USE_CPPLIB */ | |
584 | ||
8d08fdba | 585 | if (!strcmp (p, "-ftraditional") || !strcmp (p, "-traditional")) |
8cd4c175 | 586 | /* ignore */; |
8d08fdba MS |
587 | else if (p[0] == '-' && p[1] == 'f') |
588 | { | |
589 | /* Some kind of -f option. | |
590 | P's value is the option sans `-f'. | |
591 | Search for it in the table of options. */ | |
85066503 | 592 | size_t j; |
8d08fdba MS |
593 | |
594 | p += 2; | |
595 | /* Try special -f options. */ | |
596 | ||
da20811c JM |
597 | if (!strcmp (p, "handle-exceptions") |
598 | || !strcmp (p, "no-handle-exceptions")) | |
8251199e | 599 | warning ("-fhandle-exceptions has been renamed to -fexceptions (and is now on by default)"); |
84663f74 JM |
600 | else if (!strcmp (p, "all-virtual") |
601 | || !strcmp (p, "enum-int-equiv") | |
602 | || !strcmp (p, "no-nonnull-objects") | |
b0a1da19 | 603 | || !strcmp (p, "this-is-variable")) |
69ca7658 | 604 | warning ("-f%s is no longer supported", p); |
8d08fdba MS |
605 | else if (! strcmp (p, "alt-external-templates")) |
606 | { | |
607 | flag_external_templates = 1; | |
608 | flag_alt_external_templates = 1; | |
2de45c06 | 609 | cp_deprecated ("-falt-external-templates"); |
8d08fdba MS |
610 | } |
611 | else if (! strcmp (p, "no-alt-external-templates")) | |
69ca7658 | 612 | flag_alt_external_templates = 0; |
79ff2c6c MS |
613 | else if (!strcmp (p, "repo")) |
614 | { | |
615 | flag_use_repository = 1; | |
616 | flag_implicit_templates = 0; | |
00595019 | 617 | } |
386b8a85 JM |
618 | else if (!strcmp (p, "guiding-decls")) |
619 | { | |
620 | flag_guiding_decls = 1; | |
621 | name_mangling_version = 0; | |
386b8a85 JM |
622 | } |
623 | else if (!strcmp (p, "no-guiding-decls")) | |
69ca7658 | 624 | flag_guiding_decls = 0; |
2de45c06 ML |
625 | else if (!strcmp (p, "external-templates")) |
626 | { | |
627 | flag_external_templates = 1; | |
2de45c06 ML |
628 | cp_deprecated ("-fexternal-templates"); |
629 | } | |
a59ca936 JM |
630 | else if (!strcmp (p, "new-abi")) |
631 | { | |
632 | flag_new_abi = 1; | |
633 | flag_do_squangling = 1; | |
9577319f | 634 | flag_vtable_thunks = 1; |
a59ca936 JM |
635 | } |
636 | else if (!strcmp (p, "no-new-abi")) | |
637 | { | |
638 | flag_new_abi = 0; | |
639 | flag_do_squangling = 0; | |
640 | } | |
e9f32eb5 | 641 | else if (!strncmp (p, "template-depth-", 15)) |
69ca7658 MM |
642 | max_tinst_depth |
643 | = read_integral_parameter (p + 15, p - 2, max_tinst_depth); | |
386b8a85 | 644 | else if (!strncmp (p, "name-mangling-version-", 22)) |
69ca7658 MM |
645 | name_mangling_version |
646 | = read_integral_parameter (p + 22, p - 2, name_mangling_version); | |
eff3ac46 | 647 | else if (!strncmp (p, "message-length=", 15)) |
277576ee MM |
648 | set_message_length |
649 | (read_integral_parameter (p + 15, p - 2, | |
650 | /* default line-wrap length */ 72)); | |
f71f87f9 MM |
651 | else if (!strncmp (p, "dump-translation-unit-", 22)) |
652 | { | |
653 | if (p[22] == '\0') | |
654 | error ("no file specified with -fdump-translation-unit"); | |
655 | else | |
656 | flag_dump_translation_unit = p + 22; | |
657 | } | |
69ca7658 | 658 | else |
8d08fdba | 659 | { |
69ca7658 MM |
660 | int found = 0; |
661 | ||
662 | for (j = 0; | |
663 | !found && j < (sizeof (lang_f_options) | |
664 | / sizeof (lang_f_options[0])); | |
665 | j++) | |
8d08fdba | 666 | { |
69ca7658 MM |
667 | if (!strcmp (p, lang_f_options[j].string)) |
668 | { | |
669 | *lang_f_options[j].variable = lang_f_options[j].on_value; | |
670 | /* A goto here would be cleaner, | |
671 | but breaks the vax pcc. */ | |
672 | found = 1; | |
673 | } | |
674 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-' | |
675 | && ! strcmp (p+3, lang_f_options[j].string)) | |
676 | { | |
677 | *lang_f_options[j].variable = ! lang_f_options[j].on_value; | |
678 | found = 1; | |
679 | } | |
8d08fdba | 680 | } |
69ca7658 MM |
681 | |
682 | return found; | |
8d08fdba | 683 | } |
8d08fdba MS |
684 | } |
685 | else if (p[0] == '-' && p[1] == 'W') | |
686 | { | |
687 | int setting = 1; | |
688 | ||
689 | /* The -W options control the warning behavior of the compiler. */ | |
690 | p += 2; | |
691 | ||
692 | if (p[0] == 'n' && p[1] == 'o' && p[2] == '-') | |
693 | setting = 0, p += 3; | |
694 | ||
695 | if (!strcmp (p, "implicit")) | |
696 | warn_implicit = setting; | |
795add94 VM |
697 | else if (!strcmp (p, "long-long")) |
698 | warn_long_long = setting; | |
8d08fdba MS |
699 | else if (!strcmp (p, "return-type")) |
700 | warn_return_type = setting; | |
701 | else if (!strcmp (p, "ctor-dtor-privacy")) | |
702 | warn_ctor_dtor_privacy = setting; | |
703 | else if (!strcmp (p, "write-strings")) | |
704 | warn_write_strings = setting; | |
705 | else if (!strcmp (p, "cast-qual")) | |
706 | warn_cast_qual = setting; | |
8d08fdba MS |
707 | else if (!strcmp (p, "char-subscripts")) |
708 | warn_char_subscripts = setting; | |
709 | else if (!strcmp (p, "pointer-arith")) | |
710 | warn_pointer_arith = setting; | |
8d08fdba MS |
711 | else if (!strcmp (p, "missing-prototypes")) |
712 | warn_missing_prototypes = setting; | |
713 | else if (!strcmp (p, "redundant-decls")) | |
714 | warn_redundant_decls = setting; | |
715 | else if (!strcmp (p, "missing-braces")) | |
716 | warn_missing_braces = setting; | |
2ee887f2 MS |
717 | else if (!strcmp (p, "sign-compare")) |
718 | warn_sign_compare = setting; | |
1bdba2c0 DZ |
719 | else if (!strcmp (p, "float-equal")) |
720 | warn_float_equal = setting; | |
8d08fdba MS |
721 | else if (!strcmp (p, "format")) |
722 | warn_format = setting; | |
723 | else if (!strcmp (p, "conversion")) | |
724 | warn_conversion = setting; | |
725 | else if (!strcmp (p, "parentheses")) | |
726 | warn_parentheses = setting; | |
21474714 MS |
727 | else if (!strcmp (p, "non-virtual-dtor")) |
728 | warn_nonvdtor = setting; | |
8d08fdba MS |
729 | else if (!strcmp (p, "extern-inline")) |
730 | warn_extern_inline = setting; | |
f376e137 MS |
731 | else if (!strcmp (p, "reorder")) |
732 | warn_reorder = setting; | |
733 | else if (!strcmp (p, "synth")) | |
734 | warn_synth = setting; | |
9a3b49ac MS |
735 | else if (!strcmp (p, "pmf-conversions")) |
736 | warn_pmf2ptr = setting; | |
eb448459 MS |
737 | else if (!strcmp (p, "effc++")) |
738 | warn_ecpp = setting; | |
da20811c JM |
739 | else if (!strcmp (p, "sign-promo")) |
740 | warn_sign_promo = setting; | |
0c4b14c4 JM |
741 | else if (!strcmp (p, "old-style-cast")) |
742 | warn_old_style_cast = setting; | |
dc8263bc JM |
743 | else if (!strcmp (p, "overloaded-virtual")) |
744 | warn_overloaded_virtual = setting; | |
745 | else if (!strcmp (p, "multichar")) | |
746 | warn_multichar = setting; | |
f9fc59e8 NC |
747 | else if (!strcmp (p, "unknown-pragmas")) |
748 | /* Set to greater than 1, so that even unknown pragmas in | |
749 | system headers will be warned about. */ | |
750 | warn_unknown_pragmas = setting * 2; | |
7f84cec9 BK |
751 | else if (!strcmp (p, "non-template-friend")) |
752 | warn_nontemplate_friend = setting; | |
2de45c06 ML |
753 | else if (!strcmp (p, "deprecated")) |
754 | warn_deprecated = setting; | |
8d08fdba MS |
755 | else if (!strcmp (p, "comment")) |
756 | ; /* cpp handles this one. */ | |
757 | else if (!strcmp (p, "comments")) | |
758 | ; /* cpp handles this one. */ | |
759 | else if (!strcmp (p, "trigraphs")) | |
760 | ; /* cpp handles this one. */ | |
761 | else if (!strcmp (p, "import")) | |
762 | ; /* cpp handles this one. */ | |
763 | else if (!strcmp (p, "all")) | |
764 | { | |
8d08fdba MS |
765 | warn_return_type = setting; |
766 | warn_unused = setting; | |
767 | warn_implicit = setting; | |
8d08fdba MS |
768 | warn_switch = setting; |
769 | warn_format = setting; | |
e1cd6e56 | 770 | warn_parentheses = setting; |
8d08fdba | 771 | warn_missing_braces = setting; |
2ee887f2 | 772 | warn_sign_compare = setting; |
dc8263bc | 773 | warn_multichar = setting; |
8d08fdba MS |
774 | /* We save the value of warn_uninitialized, since if they put |
775 | -Wuninitialized on the command line, we need to generate a | |
776 | warning about not using it without also specifying -O. */ | |
777 | if (warn_uninitialized != 1) | |
778 | warn_uninitialized = (setting ? 2 : 0); | |
f9fc59e8 NC |
779 | /* Only warn about unknown pragmas that are not in system |
780 | headers. */ | |
7f84cec9 | 781 | warn_unknown_pragmas = 1; |
9af3a23b JM |
782 | |
783 | /* C++-specific warnings. */ | |
784 | warn_ctor_dtor_privacy = setting; | |
785 | warn_nonvdtor = setting; | |
786 | warn_reorder = setting; | |
7f84cec9 | 787 | warn_nontemplate_friend = setting; |
8d08fdba | 788 | } |
297441fd | 789 | else return strings_processed; |
8d08fdba MS |
790 | } |
791 | else if (!strcmp (p, "-ansi")) | |
4f6140be | 792 | flag_no_nonansi_builtin = 1, flag_ansi = 1, |
775afb25 | 793 | flag_no_gnu_keywords = 1; |
8d08fdba MS |
794 | #ifdef SPEW_DEBUG |
795 | /* Undocumented, only ever used when you're invoking cc1plus by hand, since | |
796 | it's probably safe to assume no sane person would ever want to use this | |
797 | under normal circumstances. */ | |
798 | else if (!strcmp (p, "-spew-debug")) | |
799 | spew_debug = 1; | |
800 | #endif | |
801 | else | |
297441fd | 802 | return strings_processed; |
8d08fdba MS |
803 | |
804 | return 1; | |
805 | } | |
806 | \f | |
807 | /* Incorporate `const' and `volatile' qualifiers for member functions. | |
808 | FUNCTION is a TYPE_DECL or a FUNCTION_DECL. | |
535233a8 NS |
809 | QUALS is a list of qualifiers. Returns any explicit |
810 | top-level qualifiers of the method's this pointer, anything other than | |
811 | TYPE_UNQUALIFIED will be an extension. */ | |
e92cc029 | 812 | |
535233a8 | 813 | int |
8d08fdba MS |
814 | grok_method_quals (ctype, function, quals) |
815 | tree ctype, function, quals; | |
816 | { | |
817 | tree fntype = TREE_TYPE (function); | |
818 | tree raises = TYPE_RAISES_EXCEPTIONS (fntype); | |
91063b51 MM |
819 | int type_quals = TYPE_UNQUALIFIED; |
820 | int dup_quals = TYPE_UNQUALIFIED; | |
535233a8 | 821 | int this_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
822 | |
823 | do | |
824 | { | |
91063b51 MM |
825 | int tq = cp_type_qual_from_rid (TREE_VALUE (quals)); |
826 | ||
535233a8 | 827 | if ((type_quals | this_quals) & tq) |
91063b51 | 828 | dup_quals |= tq; |
535233a8 NS |
829 | else if (tq & TYPE_QUAL_RESTRICT) |
830 | this_quals |= tq; | |
8d08fdba | 831 | else |
91063b51 | 832 | type_quals |= tq; |
8d08fdba | 833 | quals = TREE_CHAIN (quals); |
91063b51 | 834 | } |
8d08fdba | 835 | while (quals); |
91063b51 MM |
836 | |
837 | if (dup_quals != TYPE_UNQUALIFIED) | |
838 | cp_error ("duplicate type qualifiers in %s declaration", | |
839 | TREE_CODE (function) == FUNCTION_DECL | |
840 | ? "member function" : "type"); | |
841 | ||
842 | ctype = cp_build_qualified_type (ctype, type_quals); | |
8d08fdba MS |
843 | fntype = build_cplus_method_type (ctype, TREE_TYPE (fntype), |
844 | (TREE_CODE (fntype) == METHOD_TYPE | |
845 | ? TREE_CHAIN (TYPE_ARG_TYPES (fntype)) | |
846 | : TYPE_ARG_TYPES (fntype))); | |
847 | if (raises) | |
f30432d7 | 848 | fntype = build_exception_variant (fntype, raises); |
8d08fdba MS |
849 | |
850 | TREE_TYPE (function) = fntype; | |
535233a8 | 851 | return this_quals; |
8d08fdba MS |
852 | } |
853 | ||
8d08fdba MS |
854 | /* Warn when -fexternal-templates is used and #pragma |
855 | interface/implementation is not used all the times it should be, | |
856 | inform the user. */ | |
e92cc029 | 857 | |
8d08fdba | 858 | void |
8ccc31eb MS |
859 | warn_if_unknown_interface (decl) |
860 | tree decl; | |
8d08fdba MS |
861 | { |
862 | static int already_warned = 0; | |
8ccc31eb MS |
863 | if (already_warned++) |
864 | return; | |
865 | ||
866 | if (flag_alt_external_templates) | |
867 | { | |
868 | struct tinst_level *til = tinst_for_decl (); | |
869 | int sl = lineno; | |
870 | char *sf = input_filename; | |
871 | ||
f30432d7 MS |
872 | if (til) |
873 | { | |
874 | lineno = til->line; | |
875 | input_filename = til->file; | |
876 | } | |
8251199e | 877 | cp_warning ("template `%#D' instantiated in file without #pragma interface", |
8ccc31eb MS |
878 | decl); |
879 | lineno = sl; | |
880 | input_filename = sf; | |
881 | } | |
882 | else | |
8251199e | 883 | cp_warning_at ("template `%#D' defined in file without #pragma interface", |
8ccc31eb | 884 | decl); |
8d08fdba MS |
885 | } |
886 | ||
887 | /* A subroutine of the parser, to handle a component list. */ | |
e92cc029 | 888 | |
61a127b3 MM |
889 | void |
890 | grok_x_components (specs) | |
891 | tree specs; | |
8d08fdba | 892 | { |
61a127b3 MM |
893 | struct pending_inline **p; |
894 | tree t; | |
8d08fdba | 895 | |
72a93143 JM |
896 | specs = strip_attrs (specs); |
897 | ||
898 | check_tag_decl (specs); | |
899 | t = groktypename (build_decl_list (specs, NULL_TREE)); | |
36a117a5 | 900 | |
61a127b3 MM |
901 | /* The only case where we need to do anything additional here is an |
902 | anonymous union field, e.g.: `struct S { union { int i; }; };'. */ | |
6bdb8141 | 903 | if (t == NULL_TREE || !ANON_AGGR_TYPE_P (t)) |
61a127b3 | 904 | return; |
8d08fdba | 905 | |
6bdb8141 | 906 | fixup_anonymous_aggr (t); |
4ce3d537 | 907 | finish_member_declaration (build_lang_decl (FIELD_DECL, NULL_TREE, t)); |
61a127b3 MM |
908 | |
909 | /* Ignore any inline function definitions in the anonymous union | |
910 | since an anonymous union may not have function members. */ | |
911 | p = &pending_inlines; | |
912 | for (; *p; *p = (*p)->next) | |
913 | if (DECL_CONTEXT ((*p)->fndecl) != t) | |
914 | break; | |
8d08fdba MS |
915 | } |
916 | ||
711734a9 JM |
917 | /* Constructors for types with virtual baseclasses need an "in-charge" flag |
918 | saying whether this constructor is responsible for initialization of | |
919 | virtual baseclasses or not. All destructors also need this "in-charge" | |
920 | flag, which additionally determines whether or not the destructor should | |
921 | free the memory for the object. | |
922 | ||
923 | This function adds the "in-charge" flag to member function FN if | |
924 | appropriate. It is called from grokclassfn and tsubst. | |
925 | FN must be either a constructor or destructor. */ | |
926 | ||
927 | void | |
928 | maybe_retrofit_in_chrg (fn) | |
929 | tree fn; | |
930 | { | |
931 | tree basetype, arg_types, parms, parm, fntype; | |
932 | ||
454fa7a7 MM |
933 | /* If we've already add the in-charge parameter don't do it again. */ |
934 | if (DECL_HAS_IN_CHARGE_PARM_P (fn)) | |
711734a9 JM |
935 | return; |
936 | ||
454fa7a7 MM |
937 | /* We don't need an in-charge parameter for constructors that don't |
938 | have virtual bases. */ | |
939 | if (DECL_CONSTRUCTOR_P (fn) | |
940 | && !TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (fn))) | |
941 | return; | |
711734a9 JM |
942 | |
943 | /* First add it to DECL_ARGUMENTS... */ | |
944 | parm = build_decl (PARM_DECL, in_charge_identifier, integer_type_node); | |
945 | /* Mark the artificial `__in_chrg' parameter as "artificial". */ | |
946 | SET_DECL_ARTIFICIAL (parm); | |
947 | DECL_ARG_TYPE (parm) = integer_type_node; | |
948 | TREE_READONLY (parm) = 1; | |
949 | parms = DECL_ARGUMENTS (fn); | |
950 | TREE_CHAIN (parm) = TREE_CHAIN (parms); | |
951 | TREE_CHAIN (parms) = parm; | |
952 | ||
953 | /* ...and then to TYPE_ARG_TYPES. */ | |
954 | arg_types = TYPE_ARG_TYPES (TREE_TYPE (fn)); | |
955 | basetype = TREE_TYPE (TREE_VALUE (arg_types)); | |
956 | arg_types = hash_tree_chain (integer_type_node, TREE_CHAIN (arg_types)); | |
957 | fntype = build_cplus_method_type (basetype, TREE_TYPE (TREE_TYPE (fn)), | |
958 | arg_types); | |
959 | if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (fn))) | |
960 | fntype = build_exception_variant (fntype, | |
961 | TYPE_RAISES_EXCEPTIONS (TREE_TYPE (fn))); | |
962 | TREE_TYPE (fn) = fntype; | |
454fa7a7 MM |
963 | |
964 | /* Now we've got the in-charge parameter. */ | |
965 | DECL_HAS_IN_CHARGE_PARM_P (fn) = 1; | |
711734a9 JM |
966 | } |
967 | ||
8d08fdba MS |
968 | /* Classes overload their constituent function names automatically. |
969 | When a function name is declared in a record structure, | |
970 | its name is changed to it overloaded name. Since names for | |
971 | constructors and destructors can conflict, we place a leading | |
972 | '$' for destructors. | |
973 | ||
974 | CNAME is the name of the class we are grokking for. | |
975 | ||
976 | FUNCTION is a FUNCTION_DECL. It was created by `grokdeclarator'. | |
977 | ||
978 | FLAGS contains bits saying what's special about today's | |
979 | arguments. 1 == DESTRUCTOR. 2 == OPERATOR. | |
980 | ||
981 | If FUNCTION is a destructor, then we must add the `auto-delete' field | |
982 | as a second parameter. There is some hair associated with the fact | |
983 | that we must "declare" this variable in the manner consistent with the | |
984 | way the rest of the arguments were declared. | |
985 | ||
986 | QUALS are the qualifiers for the this pointer. */ | |
987 | ||
988 | void | |
b370501f KG |
989 | grokclassfn (ctype, function, flags, quals) |
990 | tree ctype, function; | |
8d08fdba MS |
991 | enum overload_flags flags; |
992 | tree quals; | |
993 | { | |
994 | tree fn_name = DECL_NAME (function); | |
535233a8 | 995 | int this_quals = TYPE_UNQUALIFIED; |
8d08fdba MS |
996 | |
997 | if (fn_name == NULL_TREE) | |
998 | { | |
8251199e | 999 | error ("name missing for member function"); |
8d08fdba MS |
1000 | fn_name = get_identifier ("<anonymous>"); |
1001 | DECL_NAME (function) = fn_name; | |
1002 | } | |
1003 | ||
1004 | if (quals) | |
535233a8 | 1005 | this_quals = grok_method_quals (ctype, function, quals); |
8d08fdba | 1006 | |
8d08fdba MS |
1007 | if (TREE_CODE (TREE_TYPE (function)) == METHOD_TYPE) |
1008 | { | |
1009 | /* Must add the class instance variable up front. */ | |
1010 | /* Right now we just make this a pointer. But later | |
1011 | we may wish to make it special. */ | |
535233a8 | 1012 | tree type = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (function))); |
bedda2da MM |
1013 | tree qual_type; |
1014 | tree parm; | |
1015 | ||
1016 | /* The `this' parameter is implicitly `const'; it cannot be | |
1017 | assigned to. */ | |
1018 | this_quals |= TYPE_QUAL_CONST; | |
1019 | qual_type = cp_build_qualified_type (type, this_quals); | |
1020 | parm = build_decl (PARM_DECL, this_identifier, qual_type); | |
1021 | c_apply_type_quals_to_decl (this_quals, parm); | |
2986ae00 | 1022 | |
8d08fdba | 1023 | /* Mark the artificial `this' parameter as "artificial". */ |
700f8a87 | 1024 | SET_DECL_ARTIFICIAL (parm); |
8d08fdba MS |
1025 | DECL_ARG_TYPE (parm) = type; |
1026 | /* We can make this a register, so long as we don't | |
1027 | accidentally complain if someone tries to take its address. */ | |
1028 | DECL_REGISTER (parm) = 1; | |
8d08fdba MS |
1029 | TREE_CHAIN (parm) = last_function_parms; |
1030 | last_function_parms = parm; | |
1031 | } | |
1032 | ||
711734a9 | 1033 | DECL_ARGUMENTS (function) = last_function_parms; |
711734a9 | 1034 | DECL_CONTEXT (function) = ctype; |
711734a9 JM |
1035 | |
1036 | if (flags == DTOR_FLAG || DECL_CONSTRUCTOR_P (function)) | |
535233a8 | 1037 | maybe_retrofit_in_chrg (function); |
711734a9 | 1038 | |
8d08fdba MS |
1039 | if (flags == DTOR_FLAG) |
1040 | { | |
0d9eb3ba | 1041 | DECL_DESTRUCTOR_P (function) = 1; |
711734a9 | 1042 | DECL_ASSEMBLER_NAME (function) = build_destructor_name (ctype); |
8d08fdba MS |
1043 | TYPE_HAS_DESTRUCTOR (ctype) = 1; |
1044 | } | |
1045 | else | |
36a117a5 | 1046 | set_mangled_name_for_decl (function); |
8d08fdba MS |
1047 | } |
1048 | ||
1049 | /* Work on the expr used by alignof (this is only called by the parser). */ | |
e92cc029 | 1050 | |
8d08fdba MS |
1051 | tree |
1052 | grok_alignof (expr) | |
1053 | tree expr; | |
1054 | { | |
1055 | tree best, t; | |
1056 | int bestalign; | |
1057 | ||
abff8e06 JM |
1058 | if (processing_template_decl) |
1059 | return build_min (ALIGNOF_EXPR, sizetype, expr); | |
1060 | ||
8d08fdba | 1061 | if (TREE_CODE (expr) == COMPONENT_REF |
162bc98d | 1062 | && DECL_C_BIT_FIELD (TREE_OPERAND (expr, 1))) |
8251199e | 1063 | error ("`__alignof__' applied to a bit-field"); |
8d08fdba MS |
1064 | |
1065 | if (TREE_CODE (expr) == INDIRECT_REF) | |
1066 | { | |
1067 | best = t = TREE_OPERAND (expr, 0); | |
1068 | bestalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t))); | |
1069 | ||
1070 | while (TREE_CODE (t) == NOP_EXPR | |
1071 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == POINTER_TYPE) | |
1072 | { | |
1073 | int thisalign; | |
1074 | t = TREE_OPERAND (t, 0); | |
1075 | thisalign = TYPE_ALIGN (TREE_TYPE (TREE_TYPE (t))); | |
1076 | if (thisalign > bestalign) | |
1077 | best = t, bestalign = thisalign; | |
1078 | } | |
1079 | return c_alignof (TREE_TYPE (TREE_TYPE (best))); | |
1080 | } | |
1081 | else | |
ce7695e0 | 1082 | return c_alignof (TREE_TYPE (expr)); |
8d08fdba MS |
1083 | } |
1084 | ||
1085 | /* Create an ARRAY_REF, checking for the user doing things backwards | |
1086 | along the way. */ | |
e92cc029 | 1087 | |
8d08fdba MS |
1088 | tree |
1089 | grok_array_decl (array_expr, index_exp) | |
1090 | tree array_expr, index_exp; | |
1091 | { | |
1092 | tree type = TREE_TYPE (array_expr); | |
b7484fbe | 1093 | tree p1, p2, i1, i2; |
8d08fdba MS |
1094 | |
1095 | if (type == error_mark_node || index_exp == error_mark_node) | |
1096 | return error_mark_node; | |
5156628f | 1097 | if (processing_template_decl) |
5566b478 MS |
1098 | return build_min (ARRAY_REF, type ? TREE_TYPE (type) : NULL_TREE, |
1099 | array_expr, index_exp); | |
1100 | ||
8d08fdba MS |
1101 | if (type == NULL_TREE) |
1102 | { | |
1103 | /* Something has gone very wrong. Assume we are mistakenly reducing | |
1104 | an expression instead of a declaration. */ | |
8251199e | 1105 | error ("parser may be lost: is there a '{' missing somewhere?"); |
8d08fdba MS |
1106 | return NULL_TREE; |
1107 | } | |
1108 | ||
1109 | if (TREE_CODE (type) == OFFSET_TYPE | |
1110 | || TREE_CODE (type) == REFERENCE_TYPE) | |
1111 | type = TREE_TYPE (type); | |
1112 | ||
1113 | /* If they have an `operator[]', use that. */ | |
3c215895 | 1114 | if (IS_AGGR_TYPE (type) || IS_AGGR_TYPE (TREE_TYPE (index_exp))) |
8d08fdba | 1115 | return build_opfncall (ARRAY_REF, LOOKUP_NORMAL, |
00595019 | 1116 | array_expr, index_exp, NULL_TREE); |
8d08fdba | 1117 | |
03d0f4af MM |
1118 | /* Otherwise, create an ARRAY_REF for a pointer or array type. It |
1119 | is a little-known fact that, if `a' is an array and `i' is an | |
1120 | int, you can write `i[a]', which means the same thing as `a[i]'. */ | |
8d08fdba | 1121 | |
b7484fbe MS |
1122 | if (TREE_CODE (type) == ARRAY_TYPE) |
1123 | p1 = array_expr; | |
1124 | else | |
1125 | p1 = build_expr_type_conversion (WANT_POINTER, array_expr, 0); | |
8d08fdba | 1126 | |
b7484fbe MS |
1127 | if (TREE_CODE (TREE_TYPE (index_exp)) == ARRAY_TYPE) |
1128 | p2 = index_exp; | |
1129 | else | |
1130 | p2 = build_expr_type_conversion (WANT_POINTER, index_exp, 0); | |
8d08fdba | 1131 | |
b7484fbe MS |
1132 | i1 = build_expr_type_conversion (WANT_INT | WANT_ENUM, array_expr, 0); |
1133 | i2 = build_expr_type_conversion (WANT_INT | WANT_ENUM, index_exp, 0); | |
8d08fdba | 1134 | |
b7484fbe | 1135 | if ((p1 && i2) && (i1 && p2)) |
8251199e | 1136 | error ("ambiguous conversion for array subscript"); |
8d08fdba | 1137 | |
b7484fbe MS |
1138 | if (p1 && i2) |
1139 | array_expr = p1, index_exp = i2; | |
1140 | else if (i1 && p2) | |
1141 | array_expr = p2, index_exp = i1; | |
1142 | else | |
1143 | { | |
8251199e | 1144 | cp_error ("invalid types `%T[%T]' for array subscript", |
b7484fbe MS |
1145 | type, TREE_TYPE (index_exp)); |
1146 | return error_mark_node; | |
1147 | } | |
1148 | ||
1149 | if (array_expr == error_mark_node || index_exp == error_mark_node) | |
8251199e | 1150 | error ("ambiguous conversion for array subscript"); |
b7484fbe MS |
1151 | |
1152 | return build_array_ref (array_expr, index_exp); | |
8d08fdba MS |
1153 | } |
1154 | ||
1155 | /* Given the cast expression EXP, checking out its validity. Either return | |
1156 | an error_mark_node if there was an unavoidable error, return a cast to | |
1157 | void for trying to delete a pointer w/ the value 0, or return the | |
1158 | call to delete. If DOING_VEC is 1, we handle things differently | |
1159 | for doing an array delete. If DOING_VEC is 2, they gave us the | |
1160 | array size as an argument to delete. | |
1161 | Implements ARM $5.3.4. This is called from the parser. */ | |
e92cc029 | 1162 | |
8d08fdba MS |
1163 | tree |
1164 | delete_sanity (exp, size, doing_vec, use_global_delete) | |
1165 | tree exp, size; | |
1166 | int doing_vec, use_global_delete; | |
1167 | { | |
02020185 | 1168 | tree t, type; |
8d08fdba MS |
1169 | /* For a regular vector delete (aka, no size argument) we will pass |
1170 | this down as a NULL_TREE into build_vec_delete. */ | |
1171 | tree maxindex = NULL_TREE; | |
5566b478 | 1172 | |
909e536a MS |
1173 | if (exp == error_mark_node) |
1174 | return exp; | |
1175 | ||
5156628f | 1176 | if (processing_template_decl) |
5566b478 MS |
1177 | { |
1178 | t = build_min (DELETE_EXPR, void_type_node, exp, size); | |
1179 | DELETE_EXPR_USE_GLOBAL (t) = use_global_delete; | |
1180 | DELETE_EXPR_USE_VEC (t) = doing_vec; | |
1181 | return t; | |
1182 | } | |
1183 | ||
02020185 JM |
1184 | if (TREE_CODE (exp) == OFFSET_REF) |
1185 | exp = resolve_offset_ref (exp); | |
1186 | exp = convert_from_reference (exp); | |
1187 | t = stabilize_reference (exp); | |
1188 | t = build_expr_type_conversion (WANT_POINTER, t, 1); | |
8d08fdba | 1189 | |
02020185 | 1190 | if (t == NULL_TREE || t == error_mark_node) |
8d08fdba | 1191 | { |
8251199e | 1192 | cp_error ("type `%#T' argument given to `delete', expected pointer", |
02020185 JM |
1193 | TREE_TYPE (exp)); |
1194 | return error_mark_node; | |
8d08fdba MS |
1195 | } |
1196 | ||
02020185 | 1197 | if (doing_vec == 2) |
8d08fdba | 1198 | { |
337c90cc | 1199 | maxindex = build_binary_op (MINUS_EXPR, size, integer_one_node); |
8251199e | 1200 | pedwarn ("anachronistic use of array size in vector delete"); |
8d08fdba MS |
1201 | } |
1202 | ||
02020185 JM |
1203 | type = TREE_TYPE (t); |
1204 | ||
1205 | /* As of Valley Forge, you can delete a pointer to const. */ | |
1206 | ||
1207 | /* You can't delete functions. */ | |
1208 | if (TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) | |
8926095f | 1209 | { |
cb9a3ff8 | 1210 | error ("cannot delete a function. Only pointer-to-objects are valid arguments to `delete'"); |
02020185 | 1211 | return error_mark_node; |
8926095f | 1212 | } |
02020185 | 1213 | |
7f477e81 NS |
1214 | /* Deleting ptr to void is undefined behaviour [expr.delete/3]. */ |
1215 | if (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE) | |
1216 | cp_warning ("`%T' is not a pointer-to-object type", type); | |
1217 | ||
02020185 JM |
1218 | /* An array can't have been allocated by new, so complain. */ |
1219 | if (TREE_CODE (t) == ADDR_EXPR | |
1220 | && TREE_CODE (TREE_OPERAND (t, 0)) == VAR_DECL | |
1221 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (t, 0))) == ARRAY_TYPE) | |
8251199e | 1222 | cp_warning ("deleting array `%#D'", TREE_OPERAND (t, 0)); |
02020185 JM |
1223 | |
1224 | /* Deleting a pointer with the value zero is valid and has no effect. */ | |
1225 | if (integer_zerop (t)) | |
1226 | return build1 (NOP_EXPR, void_type_node, t); | |
8d08fdba MS |
1227 | |
1228 | if (doing_vec) | |
c7edeea3 | 1229 | return build_vec_delete (t, maxindex, integer_one_node, use_global_delete); |
8d08fdba | 1230 | else |
863adfc0 MS |
1231 | { |
1232 | if (IS_AGGR_TYPE (TREE_TYPE (type)) | |
1233 | && TYPE_GETS_REG_DELETE (TREE_TYPE (type))) | |
1234 | { | |
1235 | /* Only do access checking here; we'll be calling op delete | |
1236 | from the destructor. */ | |
519ebd1e JM |
1237 | tree tmp = build_op_delete_call (DELETE_EXPR, t, size_zero_node, |
1238 | LOOKUP_NORMAL, NULL_TREE); | |
863adfc0 MS |
1239 | if (tmp == error_mark_node) |
1240 | return error_mark_node; | |
1241 | } | |
1242 | ||
1243 | return build_delete (type, t, integer_three_node, | |
bd6dd845 | 1244 | LOOKUP_NORMAL, use_global_delete); |
863adfc0 | 1245 | } |
8d08fdba MS |
1246 | } |
1247 | ||
98c1c668 JM |
1248 | /* Report an error if the indicated template declaration is not the |
1249 | sort of thing that should be a member template. */ | |
1250 | ||
1251 | void | |
1252 | check_member_template (tmpl) | |
1253 | tree tmpl; | |
1254 | { | |
1255 | tree decl; | |
1256 | ||
1257 | my_friendly_assert (TREE_CODE (tmpl) == TEMPLATE_DECL, 0); | |
1258 | decl = DECL_TEMPLATE_RESULT (tmpl); | |
1259 | ||
1701f21e MM |
1260 | if (TREE_CODE (decl) == FUNCTION_DECL |
1261 | || (TREE_CODE (decl) == TYPE_DECL | |
1262 | && IS_AGGR_TYPE (TREE_TYPE (decl)))) | |
98c1c668 JM |
1263 | { |
1264 | if (current_function_decl) | |
1265 | /* 14.5.2.2 [temp.mem] | |
1266 | ||
1267 | A local class shall not have member templates. */ | |
cb9a3ff8 | 1268 | cp_error ("invalid declaration of member template `%#D' in local class", |
98c1c668 JM |
1269 | decl); |
1270 | ||
1701f21e | 1271 | if (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl)) |
98c1c668 JM |
1272 | { |
1273 | /* 14.5.2.3 [temp.mem] | |
1274 | ||
1275 | A member function template shall not be virtual. */ | |
8251199e JM |
1276 | cp_error |
1277 | ("invalid use of `virtual' in template declaration of `%#D'", | |
98c1c668 JM |
1278 | decl); |
1279 | DECL_VIRTUAL_P (decl) = 0; | |
1280 | } | |
1281 | ||
1282 | /* The debug-information generating code doesn't know what to do | |
1283 | with member templates. */ | |
1284 | DECL_IGNORED_P (tmpl) = 1; | |
1285 | } | |
98c1c668 | 1286 | else |
8251199e | 1287 | cp_error ("template declaration of `%#D'", decl); |
98c1c668 JM |
1288 | } |
1289 | ||
eff71ab0 PB |
1290 | /* Return true iff TYPE is a valid Java parameter or return type. */ |
1291 | ||
d8e178a0 | 1292 | static int |
eff71ab0 PB |
1293 | acceptable_java_type (type) |
1294 | tree type; | |
1295 | { | |
1296 | if (TREE_CODE (type) == VOID_TYPE || TYPE_FOR_JAVA (type)) | |
1297 | return 1; | |
1298 | if (TREE_CODE (type) == POINTER_TYPE) | |
1299 | { | |
1300 | type = TREE_TYPE (type); | |
1301 | if (TREE_CODE (type) == RECORD_TYPE) | |
1302 | { | |
824f42ab PB |
1303 | tree args; int i; |
1304 | if (! TYPE_FOR_JAVA (type)) | |
1305 | return 0; | |
1306 | if (! CLASSTYPE_TEMPLATE_INFO (type)) | |
1307 | return 1; | |
1308 | args = CLASSTYPE_TI_ARGS (type); | |
1309 | i = TREE_VEC_LENGTH (args); | |
1310 | while (--i >= 0) | |
1311 | { | |
1312 | type = TREE_VEC_ELT (args, i); | |
1313 | if (TREE_CODE (type) == POINTER_TYPE) | |
1314 | type = TREE_TYPE (type); | |
1315 | if (! TYPE_FOR_JAVA (type)) | |
1316 | return 0; | |
1317 | } | |
1318 | return 1; | |
eff71ab0 PB |
1319 | } |
1320 | } | |
1321 | return 0; | |
1322 | } | |
1323 | ||
1324 | /* For a METHOD in a Java class CTYPE, return 1 if | |
1325 | the parameter and return types are valid Java types. | |
1326 | Otherwise, print appropriate error messages, and return 0. */ | |
1327 | ||
1328 | int | |
b370501f KG |
1329 | check_java_method (method) |
1330 | tree method; | |
eff71ab0 PB |
1331 | { |
1332 | int jerr = 0; | |
1333 | tree arg_types = TYPE_ARG_TYPES (TREE_TYPE (method)); | |
1334 | tree ret_type = TREE_TYPE (TREE_TYPE (method)); | |
1335 | if (! acceptable_java_type (ret_type)) | |
1336 | { | |
8251199e | 1337 | cp_error ("Java method '%D' has non-Java return type `%T'", |
eff71ab0 PB |
1338 | method, ret_type); |
1339 | jerr++; | |
1340 | } | |
1341 | for (; arg_types != NULL_TREE; arg_types = TREE_CHAIN (arg_types)) | |
1342 | { | |
1343 | tree type = TREE_VALUE (arg_types); | |
1344 | if (! acceptable_java_type (type)) | |
1345 | { | |
8251199e | 1346 | cp_error ("Java method '%D' has non-Java parameter type `%T'", |
eff71ab0 PB |
1347 | method, type); |
1348 | jerr++; | |
1349 | } | |
1350 | } | |
1351 | return jerr ? 0 : 1; | |
1352 | } | |
1353 | ||
8d08fdba MS |
1354 | /* Sanity check: report error if this function FUNCTION is not |
1355 | really a member of the class (CTYPE) it is supposed to belong to. | |
1356 | CNAME is the same here as it is for grokclassfn above. */ | |
1357 | ||
f30432d7 | 1358 | tree |
5566b478 MS |
1359 | check_classfn (ctype, function) |
1360 | tree ctype, function; | |
8d08fdba MS |
1361 | { |
1362 | tree fn_name = DECL_NAME (function); | |
2c73f9f5 | 1363 | tree fndecl, fndecls; |
5566b478 | 1364 | tree method_vec = CLASSTYPE_METHOD_VEC (complete_type (ctype)); |
8d08fdba MS |
1365 | tree *methods = 0; |
1366 | tree *end = 0; | |
03017874 MM |
1367 | |
1368 | if (DECL_USE_TEMPLATE (function) | |
74b846e0 MM |
1369 | && !(TREE_CODE (function) == TEMPLATE_DECL |
1370 | && DECL_TEMPLATE_SPECIALIZATION (function)) | |
03017874 MM |
1371 | && is_member_template (DECL_TI_TEMPLATE (function))) |
1372 | /* Since this is a specialization of a member template, | |
1373 | we're not going to find the declaration in the class. | |
1374 | For example, in: | |
1375 | ||
1376 | struct S { template <typename T> void f(T); }; | |
1377 | template <> void S::f(int); | |
1378 | ||
1379 | we're not going to find `S::f(int)', but there's no | |
1380 | reason we should, either. We let our callers know we didn't | |
1381 | find the method, but we don't complain. */ | |
1382 | return NULL_TREE; | |
1383 | ||
8d08fdba MS |
1384 | if (method_vec != 0) |
1385 | { | |
1386 | methods = &TREE_VEC_ELT (method_vec, 0); | |
1387 | end = TREE_VEC_END (method_vec); | |
1388 | ||
1389 | /* First suss out ctors and dtors. */ | |
2c73f9f5 | 1390 | if (*methods && fn_name == DECL_NAME (OVL_CURRENT (*methods)) |
fc378698 MS |
1391 | && DECL_CONSTRUCTOR_P (function)) |
1392 | goto got_it; | |
2c73f9f5 | 1393 | if (*++methods && fn_name == DECL_NAME (OVL_CURRENT (*methods)) |
0d9eb3ba | 1394 | && DECL_DESTRUCTOR_P (function)) |
8d08fdba MS |
1395 | goto got_it; |
1396 | ||
61a127b3 | 1397 | while (++methods != end && *methods) |
8d08fdba | 1398 | { |
98c1c668 | 1399 | fndecl = *methods; |
2c73f9f5 | 1400 | if (fn_name == DECL_NAME (OVL_CURRENT (*methods))) |
8d08fdba MS |
1401 | { |
1402 | got_it: | |
2c73f9f5 ML |
1403 | for (fndecls = *methods; fndecls != NULL_TREE; |
1404 | fndecls = OVL_NEXT (fndecls)) | |
8d08fdba | 1405 | { |
2c73f9f5 | 1406 | fndecl = OVL_CURRENT (fndecls); |
6b4b3deb MM |
1407 | /* The DECL_ASSEMBLER_NAME for a TEMPLATE_DECL, or |
1408 | for a for member function of a template class, is | |
f84b4be9 | 1409 | not mangled, so the check below does not work |
6b4b3deb MM |
1410 | correctly in that case. Since mangled destructor |
1411 | names do not include the type of the arguments, | |
1412 | we can't use this short-cut for them, either. | |
1413 | (It's not legal to declare arguments for a | |
1414 | destructor, but some people try.) */ | |
0d9eb3ba | 1415 | if (!DECL_DESTRUCTOR_P (function) |
6b4b3deb MM |
1416 | && (DECL_ASSEMBLER_NAME (function) |
1417 | != DECL_NAME (function)) | |
1418 | && (DECL_ASSEMBLER_NAME (fndecl) | |
1419 | != DECL_NAME (fndecl)) | |
f84b4be9 JM |
1420 | && (DECL_ASSEMBLER_NAME (function) |
1421 | == DECL_ASSEMBLER_NAME (fndecl))) | |
f30432d7 | 1422 | return fndecl; |
f84b4be9 JM |
1423 | |
1424 | /* We cannot simply call decls_match because this | |
1425 | doesn't work for static member functions that are | |
1426 | pretending to be methods, and because the name | |
1427 | may have been changed by asm("new_name"). */ | |
8145f082 MS |
1428 | if (DECL_NAME (function) == DECL_NAME (fndecl)) |
1429 | { | |
1430 | tree p1 = TYPE_ARG_TYPES (TREE_TYPE (function)); | |
1431 | tree p2 = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); | |
1432 | ||
1433 | /* Get rid of the this parameter on functions that become | |
e92cc029 | 1434 | static. */ |
8145f082 MS |
1435 | if (DECL_STATIC_FUNCTION_P (fndecl) |
1436 | && TREE_CODE (TREE_TYPE (function)) == METHOD_TYPE) | |
1437 | p1 = TREE_CHAIN (p1); | |
1438 | ||
3bfdc719 MM |
1439 | if (same_type_p (TREE_TYPE (TREE_TYPE (function)), |
1440 | TREE_TYPE (TREE_TYPE (fndecl))) | |
91063b51 | 1441 | && compparms (p1, p2) |
386b8a85 JM |
1442 | && (DECL_TEMPLATE_SPECIALIZATION (function) |
1443 | == DECL_TEMPLATE_SPECIALIZATION (fndecl)) | |
1444 | && (!DECL_TEMPLATE_SPECIALIZATION (function) | |
1445 | || (DECL_TI_TEMPLATE (function) | |
1446 | == DECL_TI_TEMPLATE (fndecl)))) | |
5566b478 | 1447 | return fndecl; |
8145f082 | 1448 | } |
8d08fdba MS |
1449 | } |
1450 | break; /* loser */ | |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | ||
61a127b3 | 1455 | if (methods != end && *methods) |
f30432d7 MS |
1456 | { |
1457 | tree fndecl = *methods; | |
8251199e | 1458 | cp_error ("prototype for `%#D' does not match any in class `%T'", |
f30432d7 | 1459 | function, ctype); |
8251199e | 1460 | cp_error_at ("candidate%s: %+#D", OVL_NEXT (fndecl) ? "s are" : " is", |
2c73f9f5 ML |
1461 | OVL_CURRENT (fndecl)); |
1462 | while (fndecl = OVL_NEXT (fndecl), fndecl) | |
8251199e | 1463 | cp_error_at (" %#D", OVL_CURRENT(fndecl)); |
f30432d7 | 1464 | } |
8d08fdba MS |
1465 | else |
1466 | { | |
1467 | methods = 0; | |
d0f062fb | 1468 | if (!COMPLETE_TYPE_P (ctype)) |
ddaed37e JM |
1469 | incomplete_type_error (function, ctype); |
1470 | else | |
1471 | cp_error ("no `%#D' member function declared in class `%T'", | |
1472 | function, ctype); | |
8d08fdba MS |
1473 | } |
1474 | ||
fc378698 | 1475 | /* If we did not find the method in the class, add it to avoid |
6b4b3deb MM |
1476 | spurious errors (unless the CTYPE is not yet defined, in which |
1477 | case we'll only confuse ourselves when the function is declared | |
1478 | properly within the class. */ | |
d0f062fb | 1479 | if (COMPLETE_TYPE_P (ctype)) |
6b4b3deb | 1480 | add_method (ctype, methods, function); |
f30432d7 | 1481 | return NULL_TREE; |
8d08fdba MS |
1482 | } |
1483 | ||
fa8d6e85 MM |
1484 | /* We have just processed the DECL, which is a static data member. |
1485 | Its initializer, if present, is INIT. The ASMSPEC_TREE, if | |
1486 | present, is the assembly-language name for the data member. | |
cd9f6678 | 1487 | FLAGS is as for cp_finish_decl. */ |
fa8d6e85 MM |
1488 | |
1489 | void | |
cd9f6678 | 1490 | finish_static_data_member_decl (decl, init, asmspec_tree, flags) |
fa8d6e85 MM |
1491 | tree decl; |
1492 | tree init; | |
1493 | tree asmspec_tree; | |
fa8d6e85 MM |
1494 | int flags; |
1495 | { | |
9c0758dd | 1496 | const char *asmspec = 0; |
fa8d6e85 MM |
1497 | |
1498 | if (asmspec_tree) | |
1499 | asmspec = TREE_STRING_POINTER (asmspec_tree); | |
1500 | ||
1501 | my_friendly_assert (TREE_PUBLIC (decl), 0); | |
1502 | ||
1503 | /* We cannot call pushdecl here, because that would fill in the | |
1504 | decl of our TREE_CHAIN. Instead, we modify cp_finish_decl to do | |
1505 | the right thing, namely, to put this decl out straight away. */ | |
1506 | /* current_class_type can be NULL_TREE in case of error. */ | |
1507 | if (!asmspec && current_class_type) | |
1508 | { | |
1509 | DECL_INITIAL (decl) = error_mark_node; | |
1510 | DECL_ASSEMBLER_NAME (decl) | |
1511 | = build_static_name (current_class_type, DECL_NAME (decl)); | |
1512 | } | |
1513 | if (! processing_template_decl) | |
0aafb128 MM |
1514 | { |
1515 | if (!pending_statics) | |
1516 | VARRAY_TREE_INIT (pending_statics, 32, "pending_statics"); | |
2c0f17dc | 1517 | VARRAY_PUSH_TREE (pending_statics, decl); |
0aafb128 MM |
1518 | } |
1519 | ||
fa8d6e85 MM |
1520 | /* Static consts need not be initialized in the class definition. */ |
1521 | if (init != NULL_TREE && TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))) | |
1522 | { | |
1523 | static int explanation = 0; | |
1524 | ||
1525 | error ("initializer invalid for static member with constructor"); | |
1526 | if (explanation++ == 0) | |
1527 | error ("(you really want to initialize it separately)"); | |
1528 | init = 0; | |
1529 | } | |
1530 | /* Force the compiler to know when an uninitialized static const | |
1531 | member is being used. */ | |
1532 | if (CP_TYPE_CONST_P (TREE_TYPE (decl)) && init == 0) | |
1533 | TREE_USED (decl) = 1; | |
1534 | DECL_INITIAL (decl) = init; | |
1535 | DECL_IN_AGGR_P (decl) = 1; | |
1536 | DECL_CONTEXT (decl) = current_class_type; | |
fa8d6e85 | 1537 | |
cd9f6678 | 1538 | cp_finish_decl (decl, init, asmspec_tree, flags); |
fa8d6e85 MM |
1539 | } |
1540 | ||
8d08fdba MS |
1541 | /* Process the specs, declarator (NULL if omitted) and width (NULL if omitted) |
1542 | of a structure component, returning a FIELD_DECL node. | |
1543 | QUALS is a list of type qualifiers for this decl (such as for declaring | |
1544 | const member functions). | |
1545 | ||
1546 | This is done during the parsing of the struct declaration. | |
1547 | The FIELD_DECL nodes are chained together and the lot of them | |
1548 | are ultimately passed to `build_struct' to make the RECORD_TYPE node. | |
1549 | ||
1550 | C++: | |
1551 | ||
1552 | If class A defines that certain functions in class B are friends, then | |
1553 | the way I have set things up, it is B who is interested in permission | |
1554 | granted by A. However, it is in A's context that these declarations | |
1555 | are parsed. By returning a void_type_node, class A does not attempt | |
1556 | to incorporate the declarations of the friends within its structure. | |
1557 | ||
1558 | DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING | |
1559 | CHANGES TO CODE IN `start_method'. */ | |
1560 | ||
1561 | tree | |
c11b6f21 MS |
1562 | grokfield (declarator, declspecs, init, asmspec_tree, attrlist) |
1563 | tree declarator, declspecs, init, asmspec_tree, attrlist; | |
8d08fdba MS |
1564 | { |
1565 | register tree value; | |
9c0758dd | 1566 | const char *asmspec = 0; |
6060a796 | 1567 | int flags = LOOKUP_ONLYCONVERTING; |
8d08fdba MS |
1568 | |
1569 | /* Convert () initializers to = initializers. */ | |
1570 | if (init == NULL_TREE && declarator != NULL_TREE | |
1571 | && TREE_CODE (declarator) == CALL_EXPR | |
1572 | && TREE_OPERAND (declarator, 0) | |
1573 | && (TREE_CODE (TREE_OPERAND (declarator, 0)) == IDENTIFIER_NODE | |
1574 | || TREE_CODE (TREE_OPERAND (declarator, 0)) == SCOPE_REF) | |
43f887f9 | 1575 | && parmlist_is_exprlist (CALL_DECLARATOR_PARMS (declarator))) |
8d08fdba | 1576 | { |
009e9845 MM |
1577 | /* It's invalid to try to initialize a data member using a |
1578 | functional notation, e.g.: | |
1579 | ||
1580 | struct S { | |
1581 | static int i (3); | |
1582 | }; | |
1583 | ||
1584 | Explain that to the user. */ | |
1585 | static int explained_p; | |
1586 | ||
1587 | cp_error ("invalid data member initiailization"); | |
1588 | if (!explained_p) | |
1589 | { | |
1590 | cp_error ("use `=' to initialize static data members"); | |
1591 | explained_p = 1; | |
1592 | } | |
1593 | ||
8d08fdba | 1594 | declarator = TREE_OPERAND (declarator, 0); |
6060a796 | 1595 | flags = 0; |
8d08fdba MS |
1596 | } |
1597 | ||
cffa8729 | 1598 | if (declspecs == NULL_TREE |
7fcdf4c2 MS |
1599 | && TREE_CODE (declarator) == SCOPE_REF |
1600 | && TREE_CODE (TREE_OPERAND (declarator, 1)) == IDENTIFIER_NODE) | |
cffa8729 MS |
1601 | { |
1602 | /* Access declaration */ | |
5566b478 MS |
1603 | if (! IS_AGGR_TYPE_CODE (TREE_CODE (TREE_OPERAND (declarator, 0)))) |
1604 | ; | |
1605 | else if (TREE_COMPLEXITY (declarator) == current_class_depth) | |
b74a0560 | 1606 | pop_nested_class (); |
cffa8729 MS |
1607 | return do_class_using_decl (declarator); |
1608 | } | |
1609 | ||
8d08fdba MS |
1610 | if (init |
1611 | && TREE_CODE (init) == TREE_LIST | |
1612 | && TREE_VALUE (init) == error_mark_node | |
1613 | && TREE_CHAIN (init) == NULL_TREE) | |
cffa8729 | 1614 | init = NULL_TREE; |
8d08fdba | 1615 | |
419c6212 | 1616 | value = grokdeclarator (declarator, declspecs, FIELD, init != 0, attrlist); |
6c30752f | 1617 | if (! value || value == error_mark_node) |
3ddfb0e6 MM |
1618 | /* friend or constructor went bad. */ |
1619 | return value; | |
5add10fd NS |
1620 | if (TREE_TYPE (value) == error_mark_node) |
1621 | return error_mark_node; | |
8d08fdba MS |
1622 | |
1623 | /* Pass friendly classes back. */ | |
1624 | if (TREE_CODE (value) == VOID_TYPE) | |
1625 | return void_type_node; | |
1626 | ||
1627 | if (DECL_NAME (value) != NULL_TREE | |
1628 | && IDENTIFIER_POINTER (DECL_NAME (value))[0] == '_' | |
1629 | && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (value)), "_vptr")) | |
8251199e | 1630 | cp_error ("member `%D' conflicts with virtual function table field name", |
3c215895 | 1631 | value); |
8d08fdba MS |
1632 | |
1633 | /* Stash away type declarations. */ | |
1634 | if (TREE_CODE (value) == TYPE_DECL) | |
1635 | { | |
1636 | DECL_NONLOCAL (value) = 1; | |
700f8a87 | 1637 | DECL_CONTEXT (value) = current_class_type; |
8145f082 | 1638 | |
61cd1234 MM |
1639 | /* Now that we've updated the context, we need to remangle the |
1640 | name for this TYPE_DECL. */ | |
1641 | DECL_ASSEMBLER_NAME (value) = DECL_NAME (value); | |
35fce3ce MM |
1642 | if (!uses_template_parms (value)) |
1643 | DECL_ASSEMBLER_NAME (value) = | |
1644 | get_identifier (build_overload_name (TREE_TYPE (value), 1, 1)); | |
61cd1234 | 1645 | |
9188c363 MM |
1646 | if (processing_template_decl) |
1647 | value = push_template_decl (value); | |
1648 | ||
8d08fdba MS |
1649 | return value; |
1650 | } | |
1651 | ||
8d08fdba MS |
1652 | if (DECL_IN_AGGR_P (value)) |
1653 | { | |
6b4b3deb MM |
1654 | cp_error ("`%D' is already defined in `%T'", value, |
1655 | DECL_CONTEXT (value)); | |
8d08fdba MS |
1656 | return void_type_node; |
1657 | } | |
1658 | ||
8d08fdba MS |
1659 | if (asmspec_tree) |
1660 | asmspec = TREE_STRING_POINTER (asmspec_tree); | |
1661 | ||
1662 | if (init) | |
1663 | { | |
6eabb241 | 1664 | if (TREE_CODE (value) == FUNCTION_DECL) |
8d08fdba MS |
1665 | { |
1666 | grok_function_init (value, init); | |
1667 | init = NULL_TREE; | |
1668 | } | |
5b605f68 | 1669 | else if (pedantic && TREE_CODE (value) != VAR_DECL) |
a0a33927 MS |
1670 | /* Already complained in grokdeclarator. */ |
1671 | init = NULL_TREE; | |
8d08fdba MS |
1672 | else |
1673 | { | |
a0a33927 MS |
1674 | /* We allow initializers to become parameters to base |
1675 | initializers. */ | |
8d08fdba MS |
1676 | if (TREE_CODE (init) == TREE_LIST) |
1677 | { | |
1678 | if (TREE_CHAIN (init) == NULL_TREE) | |
1679 | init = TREE_VALUE (init); | |
1680 | else | |
1681 | init = digest_init (TREE_TYPE (value), init, (tree *)0); | |
1682 | } | |
1683 | ||
1684 | if (TREE_CODE (init) == CONST_DECL) | |
1685 | init = DECL_INITIAL (init); | |
1686 | else if (TREE_READONLY_DECL_P (init)) | |
1687 | init = decl_constant_value (init); | |
1688 | else if (TREE_CODE (init) == CONSTRUCTOR) | |
1689 | init = digest_init (TREE_TYPE (value), init, (tree *)0); | |
8d08fdba MS |
1690 | if (init == error_mark_node) |
1691 | /* We must make this look different than `error_mark_node' | |
1692 | because `decl_const_value' would mis-interpret it | |
1693 | as only meaning that this VAR_DECL is defined. */ | |
1694 | init = build1 (NOP_EXPR, TREE_TYPE (value), init); | |
5156628f | 1695 | else if (processing_template_decl) |
5566b478 | 1696 | ; |
8d08fdba MS |
1697 | else if (! TREE_CONSTANT (init)) |
1698 | { | |
1699 | /* We can allow references to things that are effectively | |
1700 | static, since references are initialized with the address. */ | |
1701 | if (TREE_CODE (TREE_TYPE (value)) != REFERENCE_TYPE | |
1702 | || (TREE_STATIC (init) == 0 | |
2f939d94 | 1703 | && (!DECL_P (init) || DECL_EXTERNAL (init) == 0))) |
8d08fdba | 1704 | { |
8251199e | 1705 | error ("field initializer is not constant"); |
8d08fdba MS |
1706 | init = error_mark_node; |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | } | |
1711 | ||
5156628f | 1712 | if (processing_template_decl && ! current_function_decl |
5566b478 | 1713 | && (TREE_CODE (value) == VAR_DECL || TREE_CODE (value) == FUNCTION_DECL)) |
3ac3d9ea | 1714 | value = push_template_decl (value); |
5566b478 | 1715 | |
45537677 MS |
1716 | if (attrlist) |
1717 | cplus_decl_attributes (value, TREE_PURPOSE (attrlist), | |
1718 | TREE_VALUE (attrlist)); | |
1719 | ||
8d08fdba MS |
1720 | if (TREE_CODE (value) == VAR_DECL) |
1721 | { | |
fa8d6e85 | 1722 | finish_static_data_member_decl (value, init, asmspec_tree, |
cd9f6678 | 1723 | flags); |
8d08fdba MS |
1724 | return value; |
1725 | } | |
1726 | if (TREE_CODE (value) == FIELD_DECL) | |
1727 | { | |
1728 | if (asmspec) | |
6060a796 MS |
1729 | { |
1730 | /* This must override the asm specifier which was placed | |
1731 | by grokclassfn. Lay this out fresh. */ | |
1732 | DECL_RTL (value) = NULL_RTX; | |
1733 | DECL_ASSEMBLER_NAME (value) = get_identifier (asmspec); | |
1734 | } | |
8d08fdba MS |
1735 | if (DECL_INITIAL (value) == error_mark_node) |
1736 | init = error_mark_node; | |
cd9f6678 | 1737 | cp_finish_decl (value, init, asmspec_tree, flags); |
8d08fdba MS |
1738 | DECL_INITIAL (value) = init; |
1739 | DECL_IN_AGGR_P (value) = 1; | |
1740 | return value; | |
1741 | } | |
1742 | if (TREE_CODE (value) == FUNCTION_DECL) | |
1743 | { | |
6060a796 MS |
1744 | if (asmspec) |
1745 | { | |
1746 | /* This must override the asm specifier which was placed | |
1747 | by grokclassfn. Lay this out fresh. */ | |
1748 | DECL_RTL (value) = NULL_RTX; | |
1749 | DECL_ASSEMBLER_NAME (value) = get_identifier (asmspec); | |
1750 | } | |
cd9f6678 | 1751 | cp_finish_decl (value, init, asmspec_tree, flags); |
8d08fdba MS |
1752 | |
1753 | /* Pass friends back this way. */ | |
1754 | if (DECL_FRIEND_P (value)) | |
1755 | return void_type_node; | |
1756 | ||
1757 | DECL_IN_AGGR_P (value) = 1; | |
1758 | return value; | |
1759 | } | |
1760 | my_friendly_abort (21); | |
1761 | /* NOTREACHED */ | |
1762 | return NULL_TREE; | |
1763 | } | |
1764 | ||
1765 | /* Like `grokfield', but for bitfields. | |
1766 | WIDTH is non-NULL for bit fields only, and is an INTEGER_CST node. */ | |
1767 | ||
1768 | tree | |
1769 | grokbitfield (declarator, declspecs, width) | |
1770 | tree declarator, declspecs, width; | |
1771 | { | |
f30432d7 | 1772 | register tree value = grokdeclarator (declarator, declspecs, BITFIELD, |
c11b6f21 | 1773 | 0, NULL_TREE); |
8d08fdba MS |
1774 | |
1775 | if (! value) return NULL_TREE; /* friends went bad. */ | |
1776 | ||
1777 | /* Pass friendly classes back. */ | |
1778 | if (TREE_CODE (value) == VOID_TYPE) | |
1779 | return void_type_node; | |
1780 | ||
1781 | if (TREE_CODE (value) == TYPE_DECL) | |
1782 | { | |
8251199e | 1783 | cp_error ("cannot declare `%D' to be a bitfield type", value); |
8d08fdba MS |
1784 | return NULL_TREE; |
1785 | } | |
1786 | ||
ae58fa02 MM |
1787 | /* Usually, finish_struct_1 catches bitifields with invalid types. |
1788 | But, in the case of bitfields with function type, we confuse | |
1789 | ourselves into thinking they are member functions, so we must | |
1790 | check here. */ | |
1791 | if (TREE_CODE (value) == FUNCTION_DECL) | |
1792 | { | |
8251199e | 1793 | cp_error ("cannot declare bitfield `%D' with funcion type", |
ae58fa02 MM |
1794 | DECL_NAME (value)); |
1795 | return NULL_TREE; | |
1796 | } | |
1797 | ||
8d08fdba MS |
1798 | if (DECL_IN_AGGR_P (value)) |
1799 | { | |
8251199e | 1800 | cp_error ("`%D' is already defined in the class %T", value, |
8d08fdba MS |
1801 | DECL_CONTEXT (value)); |
1802 | return void_type_node; | |
1803 | } | |
1804 | ||
1805 | GNU_xref_member (current_class_name, value); | |
1806 | ||
1807 | if (TREE_STATIC (value)) | |
1808 | { | |
8251199e | 1809 | cp_error ("static member `%D' cannot be a bitfield", value); |
8d08fdba MS |
1810 | return NULL_TREE; |
1811 | } | |
cd9f6678 | 1812 | cp_finish_decl (value, NULL_TREE, NULL_TREE, 0); |
8d08fdba MS |
1813 | |
1814 | if (width != error_mark_node) | |
1815 | { | |
5566b478 MS |
1816 | constant_expression_warning (width); |
1817 | DECL_INITIAL (value) = width; | |
162bc98d | 1818 | SET_DECL_C_BIT_FIELD (value); |
8d08fdba MS |
1819 | } |
1820 | ||
1821 | DECL_IN_AGGR_P (value) = 1; | |
1822 | return value; | |
1823 | } | |
1824 | ||
8d08fdba | 1825 | tree |
51c184be MS |
1826 | grokoptypename (declspecs, declarator) |
1827 | tree declspecs, declarator; | |
8d08fdba | 1828 | { |
c11b6f21 | 1829 | tree t = grokdeclarator (declarator, declspecs, TYPENAME, 0, NULL_TREE); |
51c184be | 1830 | return build_typename_overload (t); |
8d08fdba MS |
1831 | } |
1832 | ||
1833 | /* When a function is declared with an initializer, | |
1834 | do the right thing. Currently, there are two possibilities: | |
1835 | ||
1836 | class B | |
1837 | { | |
1838 | public: | |
1839 | // initialization possibility #1. | |
1840 | virtual void f () = 0; | |
1841 | int g (); | |
1842 | }; | |
1843 | ||
1844 | class D1 : B | |
1845 | { | |
1846 | public: | |
1847 | int d1; | |
1848 | // error, no f (); | |
1849 | }; | |
1850 | ||
1851 | class D2 : B | |
1852 | { | |
1853 | public: | |
1854 | int d2; | |
1855 | void f (); | |
1856 | }; | |
1857 | ||
1858 | class D3 : B | |
1859 | { | |
1860 | public: | |
1861 | int d3; | |
1862 | // initialization possibility #2 | |
1863 | void f () = B::f; | |
1864 | }; | |
1865 | ||
1866 | */ | |
1867 | ||
f0e01782 MS |
1868 | int |
1869 | copy_assignment_arg_p (parmtype, virtualp) | |
1870 | tree parmtype; | |
b370501f | 1871 | int virtualp ATTRIBUTE_UNUSED; |
f0e01782 | 1872 | { |
691c003d MS |
1873 | if (current_class_type == NULL_TREE) |
1874 | return 0; | |
1875 | ||
f0e01782 MS |
1876 | if (TREE_CODE (parmtype) == REFERENCE_TYPE) |
1877 | parmtype = TREE_TYPE (parmtype); | |
1878 | ||
1879 | if ((TYPE_MAIN_VARIANT (parmtype) == current_class_type) | |
824b9a4c MS |
1880 | #if 0 |
1881 | /* Non-standard hack to support old Booch components. */ | |
1882 | || (! virtualp && DERIVED_FROM_P (parmtype, current_class_type)) | |
1883 | #endif | |
1884 | ) | |
f0e01782 MS |
1885 | return 1; |
1886 | ||
1887 | return 0; | |
1888 | } | |
1889 | ||
8d08fdba MS |
1890 | static void |
1891 | grok_function_init (decl, init) | |
1892 | tree decl; | |
1893 | tree init; | |
1894 | { | |
1895 | /* An initializer for a function tells how this function should | |
1896 | be inherited. */ | |
1897 | tree type = TREE_TYPE (decl); | |
8d08fdba MS |
1898 | |
1899 | if (TREE_CODE (type) == FUNCTION_TYPE) | |
8251199e | 1900 | cp_error ("initializer specified for non-member function `%D'", decl); |
cffa8729 MS |
1901 | #if 0 |
1902 | /* We'll check for this in finish_struct_1. */ | |
8d08fdba | 1903 | else if (DECL_VINDEX (decl) == NULL_TREE) |
cb9a3ff8 | 1904 | cp_error ("initializer specified for non-virtual member function `%D'", decl); |
cffa8729 | 1905 | #endif |
8d08fdba MS |
1906 | else if (integer_zerop (init)) |
1907 | { | |
8926095f | 1908 | #if 0 |
8d08fdba MS |
1909 | /* Mark this function as being "defined". */ |
1910 | DECL_INITIAL (decl) = error_mark_node; | |
e92cc029 | 1911 | /* pure virtual destructors must be defined. */ |
8926095f MS |
1912 | /* pure virtual needs to be defined (as abort) only when put in |
1913 | vtbl. For wellformed call, it should be itself. pr4737 */ | |
0d9eb3ba | 1914 | if (!DECL_DESTRUCTOR_P (decl))) |
8d08fdba MS |
1915 | { |
1916 | /* Give this node rtl from `abort'. */ | |
1917 | DECL_RTL (decl) = DECL_RTL (abort_fndecl); | |
1918 | } | |
8926095f | 1919 | #endif |
fee7654e | 1920 | DECL_PURE_VIRTUAL_P (decl) = 1; |
f0e01782 MS |
1921 | if (DECL_NAME (decl) == ansi_opname [(int) MODIFY_EXPR]) |
1922 | { | |
1923 | tree parmtype | |
1924 | = TREE_VALUE (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))); | |
1925 | ||
1926 | if (copy_assignment_arg_p (parmtype, 1)) | |
1927 | TYPE_HAS_ABSTRACT_ASSIGN_REF (current_class_type) = 1; | |
1928 | } | |
8d08fdba | 1929 | } |
8d08fdba | 1930 | else |
8251199e | 1931 | cp_error ("invalid initializer for virtual method `%D'", decl); |
8d08fdba MS |
1932 | } |
1933 | \f | |
28cbf42c MS |
1934 | void |
1935 | cplus_decl_attributes (decl, attributes, prefix_attributes) | |
f6abb50a | 1936 | tree decl, attributes, prefix_attributes; |
8d08fdba | 1937 | { |
e8abc66f MS |
1938 | if (decl == NULL_TREE || decl == void_type_node) |
1939 | return; | |
1940 | ||
1941 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
1942 | decl = DECL_TEMPLATE_RESULT (decl); | |
1943 | ||
1944 | decl_attributes (decl, attributes, prefix_attributes); | |
863adfc0 MS |
1945 | |
1946 | if (TREE_CODE (decl) == TYPE_DECL) | |
1947 | SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (decl), TREE_TYPE (decl)); | |
8d08fdba MS |
1948 | } |
1949 | \f | |
1950 | /* CONSTRUCTOR_NAME: | |
1951 | Return the name for the constructor (or destructor) for the | |
1952 | specified class. Argument can be RECORD_TYPE, TYPE_DECL, or | |
1953 | IDENTIFIER_NODE. When given a template, this routine doesn't | |
1954 | lose the specialization. */ | |
e92cc029 | 1955 | |
8d08fdba MS |
1956 | tree |
1957 | constructor_name_full (thing) | |
1958 | tree thing; | |
1959 | { | |
73b0fce8 | 1960 | if (TREE_CODE (thing) == TEMPLATE_TYPE_PARM |
97e7cbe4 JM |
1961 | || TREE_CODE (thing) == TEMPLATE_TEMPLATE_PARM |
1962 | || TREE_CODE (thing) == TYPENAME_TYPE) | |
be99da77 MS |
1963 | thing = TYPE_NAME (thing); |
1964 | else if (IS_AGGR_TYPE_CODE (TREE_CODE (thing))) | |
8d08fdba MS |
1965 | { |
1966 | if (TYPE_WAS_ANONYMOUS (thing) && TYPE_HAS_CONSTRUCTOR (thing)) | |
42c7b807 | 1967 | thing = DECL_NAME (OVL_CURRENT (TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (thing), 0))); |
8d08fdba MS |
1968 | else |
1969 | thing = TYPE_NAME (thing); | |
1970 | } | |
1971 | if (TREE_CODE (thing) == TYPE_DECL | |
1972 | || (TREE_CODE (thing) == TEMPLATE_DECL | |
5566b478 | 1973 | && TREE_CODE (DECL_TEMPLATE_RESULT (thing)) == TYPE_DECL)) |
8d08fdba MS |
1974 | thing = DECL_NAME (thing); |
1975 | my_friendly_assert (TREE_CODE (thing) == IDENTIFIER_NODE, 197); | |
1976 | return thing; | |
1977 | } | |
1978 | ||
1979 | /* CONSTRUCTOR_NAME: | |
1980 | Return the name for the constructor (or destructor) for the | |
1981 | specified class. Argument can be RECORD_TYPE, TYPE_DECL, or | |
1982 | IDENTIFIER_NODE. When given a template, return the plain | |
1983 | unspecialized name. */ | |
e92cc029 | 1984 | |
8d08fdba MS |
1985 | tree |
1986 | constructor_name (thing) | |
1987 | tree thing; | |
1988 | { | |
1989 | tree t; | |
1990 | thing = constructor_name_full (thing); | |
1991 | t = IDENTIFIER_TEMPLATE (thing); | |
1992 | if (!t) | |
1993 | return thing; | |
5566b478 | 1994 | return t; |
8d08fdba MS |
1995 | } |
1996 | \f | |
56e770bf | 1997 | /* Defer the compilation of the FN until the end of compilation. */ |
e92cc029 | 1998 | |
8d08fdba | 1999 | void |
56e770bf MM |
2000 | defer_fn (fn) |
2001 | tree fn; | |
8d08fdba | 2002 | { |
56e770bf | 2003 | if (DECL_DEFERRED_FN (fn)) |
8926095f | 2004 | return; |
56e770bf MM |
2005 | DECL_DEFERRED_FN (fn) = 1; |
2006 | if (!deferred_fns) | |
2007 | VARRAY_TREE_INIT (deferred_fns, 32, "deferred_fns"); | |
2c0f17dc | 2008 | |
56e770bf | 2009 | VARRAY_PUSH_TREE (deferred_fns, fn); |
8d08fdba MS |
2010 | } |
2011 | ||
8d08fdba MS |
2012 | /* Hand off a unique name which can be used for variable we don't really |
2013 | want to know about anyway, for example, the anonymous variables which | |
2014 | are needed to make references work. Declare this thing so we can use it. | |
2015 | The variable created will be of type TYPE. | |
2016 | ||
2017 | STATICP is nonzero if this variable should be static. */ | |
2018 | ||
2019 | tree | |
2020 | get_temp_name (type, staticp) | |
2021 | tree type; | |
2022 | int staticp; | |
2023 | { | |
2024 | char buf[sizeof (AUTO_TEMP_FORMAT) + 20]; | |
2025 | tree decl; | |
a9aedbc2 | 2026 | int toplev = toplevel_bindings_p (); |
8d08fdba | 2027 | |
8d08fdba MS |
2028 | if (toplev || staticp) |
2029 | { | |
8d08fdba MS |
2030 | sprintf (buf, AUTO_TEMP_FORMAT, global_temp_name_counter++); |
2031 | decl = pushdecl_top_level (build_decl (VAR_DECL, get_identifier (buf), type)); | |
2032 | } | |
2033 | else | |
2034 | { | |
2035 | sprintf (buf, AUTO_TEMP_FORMAT, temp_name_counter++); | |
2036 | decl = pushdecl (build_decl (VAR_DECL, get_identifier (buf), type)); | |
2037 | } | |
2038 | TREE_USED (decl) = 1; | |
2039 | TREE_STATIC (decl) = staticp; | |
fc378698 | 2040 | DECL_ARTIFICIAL (decl) = 1; |
8d08fdba MS |
2041 | |
2042 | /* If this is a local variable, then lay out its rtl now. | |
2043 | Otherwise, callers of this function are responsible for dealing | |
2044 | with this variable's rtl. */ | |
2045 | if (! toplev) | |
2046 | { | |
2047 | expand_decl (decl); | |
b7b8bcd2 MM |
2048 | my_friendly_assert (DECL_INITIAL (decl) == NULL_TREE, |
2049 | 19990826); | |
8d08fdba | 2050 | } |
8d08fdba MS |
2051 | |
2052 | return decl; | |
2053 | } | |
2054 | ||
cb96daa2 MM |
2055 | /* Hunts through the global anonymous union ANON_DECL, building |
2056 | appropriate VAR_DECLs. Stores cleanups on the list of ELEMS, and | |
2057 | returns a VAR_DECL whose size is the same as the size of the | |
2058 | ANON_DECL, if one is available. */ | |
ce1b9eb9 | 2059 | |
e9659ab0 | 2060 | static tree |
cb96daa2 | 2061 | build_anon_union_vars (anon_decl, elems, static_p, external_p) |
ce1b9eb9 | 2062 | tree anon_decl; |
cb96daa2 MM |
2063 | tree* elems; |
2064 | int static_p; | |
2065 | int external_p; | |
ce1b9eb9 | 2066 | { |
cb96daa2 | 2067 | tree type = TREE_TYPE (anon_decl); |
ce1b9eb9 | 2068 | tree main_decl = NULL_TREE; |
cb96daa2 | 2069 | tree field; |
ce1b9eb9 | 2070 | |
6bdb8141 JM |
2071 | /* Rather than write the code to handle the non-union case, |
2072 | just give an error. */ | |
2073 | if (TREE_CODE (type) != UNION_TYPE) | |
2074 | error ("anonymous struct not inside named type"); | |
2075 | ||
cb96daa2 | 2076 | for (field = TYPE_FIELDS (type); |
ce1b9eb9 MM |
2077 | field != NULL_TREE; |
2078 | field = TREE_CHAIN (field)) | |
2079 | { | |
cb96daa2 | 2080 | tree decl; |
8ebeee52 JM |
2081 | |
2082 | if (DECL_ARTIFICIAL (field)) | |
ce1b9eb9 | 2083 | continue; |
8ebeee52 JM |
2084 | if (TREE_CODE (field) != FIELD_DECL) |
2085 | { | |
2086 | cp_pedwarn_at ("`%#D' invalid; an anonymous union can only have non-static data members", | |
2087 | field); | |
2088 | continue; | |
2089 | } | |
ce1b9eb9 | 2090 | |
cb96daa2 | 2091 | if (TREE_PRIVATE (field)) |
8251199e | 2092 | cp_pedwarn_at ("private member `%#D' in anonymous union", field); |
cb96daa2 | 2093 | else if (TREE_PROTECTED (field)) |
8251199e | 2094 | cp_pedwarn_at ("protected member `%#D' in anonymous union", field); |
cb96daa2 MM |
2095 | |
2096 | if (DECL_NAME (field) == NULL_TREE | |
6bdb8141 | 2097 | && ANON_AGGR_TYPE_P (TREE_TYPE (field))) |
67ffc812 MM |
2098 | { |
2099 | decl = build_anon_union_vars (field, elems, static_p, external_p); | |
2100 | if (!decl) | |
2101 | continue; | |
2102 | } | |
18141e4c JM |
2103 | else if (DECL_NAME (field) == NULL_TREE) |
2104 | continue; | |
cb96daa2 MM |
2105 | else |
2106 | { | |
2107 | decl = build_decl (VAR_DECL, DECL_NAME (field), TREE_TYPE (field)); | |
2108 | /* tell `pushdecl' that this is not tentative. */ | |
2109 | DECL_INITIAL (decl) = error_mark_node; | |
2110 | TREE_PUBLIC (decl) = 0; | |
2111 | TREE_STATIC (decl) = static_p; | |
2112 | DECL_EXTERNAL (decl) = external_p; | |
2113 | decl = pushdecl (decl); | |
2114 | DECL_INITIAL (decl) = NULL_TREE; | |
2115 | } | |
2116 | ||
ce1b9eb9 MM |
2117 | /* Only write out one anon union element--choose the one that |
2118 | can hold them all. */ | |
2119 | if (main_decl == NULL_TREE | |
cb96daa2 MM |
2120 | && simple_cst_equal (DECL_SIZE (decl), |
2121 | DECL_SIZE (anon_decl)) == 1) | |
2122 | main_decl = decl; | |
2123 | else | |
ce1b9eb9 MM |
2124 | /* ??? This causes there to be no debug info written out |
2125 | about this decl. */ | |
cb96daa2 MM |
2126 | TREE_ASM_WRITTEN (decl) = 1; |
2127 | ||
2128 | if (DECL_NAME (field) == NULL_TREE | |
6bdb8141 | 2129 | && ANON_AGGR_TYPE_P (TREE_TYPE (field))) |
cb96daa2 MM |
2130 | /* The remainder of the processing was already done in the |
2131 | recursive call. */ | |
2132 | continue; | |
ce1b9eb9 | 2133 | |
cb96daa2 MM |
2134 | /* If there's a cleanup to do, it belongs in the |
2135 | TREE_PURPOSE of the following TREE_LIST. */ | |
e1b3e07d | 2136 | *elems = tree_cons (NULL_TREE, decl, *elems); |
cb96daa2 MM |
2137 | TREE_TYPE (*elems) = type; |
2138 | } | |
2139 | ||
ce1b9eb9 MM |
2140 | return main_decl; |
2141 | } | |
2142 | ||
8d08fdba MS |
2143 | /* Finish off the processing of a UNION_TYPE structure. |
2144 | If there are static members, then all members are | |
2145 | static, and must be laid out together. If the | |
2146 | union is an anonymous union, we arrange for that | |
2147 | as well. PUBLIC_P is nonzero if this union is | |
2148 | not declared static. */ | |
e92cc029 | 2149 | |
8d08fdba MS |
2150 | void |
2151 | finish_anon_union (anon_union_decl) | |
2152 | tree anon_union_decl; | |
2153 | { | |
2154 | tree type = TREE_TYPE (anon_union_decl); | |
cb96daa2 | 2155 | tree main_decl; |
8d08fdba MS |
2156 | int public_p = TREE_PUBLIC (anon_union_decl); |
2157 | int static_p = TREE_STATIC (anon_union_decl); | |
2158 | int external_p = DECL_EXTERNAL (anon_union_decl); | |
2159 | ||
cb96daa2 | 2160 | if (TYPE_FIELDS (type) == NULL_TREE) |
8d08fdba MS |
2161 | return; |
2162 | ||
2163 | if (public_p) | |
2164 | { | |
8251199e | 2165 | error ("global anonymous unions must be declared static"); |
8d08fdba MS |
2166 | return; |
2167 | } | |
2168 | ||
0fa5e05c MM |
2169 | main_decl = build_anon_union_vars (anon_union_decl, |
2170 | &DECL_ANON_UNION_ELEMS (anon_union_decl), | |
cb96daa2 | 2171 | static_p, external_p); |
ce1b9eb9 | 2172 | |
18141e4c JM |
2173 | if (main_decl == NULL_TREE) |
2174 | { | |
2175 | warning ("anonymous union with no members"); | |
2176 | return; | |
2177 | } | |
2178 | ||
8d08fdba MS |
2179 | if (static_p) |
2180 | { | |
18141e4c JM |
2181 | make_decl_rtl (main_decl, 0, toplevel_bindings_p ()); |
2182 | DECL_RTL (anon_union_decl) = DECL_RTL (main_decl); | |
0fa5e05c MM |
2183 | expand_anon_union_decl (anon_union_decl, |
2184 | NULL_TREE, | |
2185 | DECL_ANON_UNION_ELEMS (anon_union_decl)); | |
8d08fdba | 2186 | } |
0fa5e05c MM |
2187 | else |
2188 | add_decl_stmt (anon_union_decl); | |
8d08fdba MS |
2189 | } |
2190 | ||
8d08fdba MS |
2191 | /* Finish processing a builtin type TYPE. It's name is NAME, |
2192 | its fields are in the array FIELDS. LEN is the number of elements | |
2193 | in FIELDS minus one, or put another way, it is the maximum subscript | |
2194 | used in FIELDS. | |
2195 | ||
2196 | It is given the same alignment as ALIGN_TYPE. */ | |
e92cc029 | 2197 | |
8d08fdba MS |
2198 | void |
2199 | finish_builtin_type (type, name, fields, len, align_type) | |
2200 | tree type; | |
d8e178a0 | 2201 | const char *name; |
8d08fdba MS |
2202 | tree fields[]; |
2203 | int len; | |
2204 | tree align_type; | |
2205 | { | |
2206 | register int i; | |
2207 | ||
2208 | TYPE_FIELDS (type) = fields[0]; | |
2209 | for (i = 0; i < len; i++) | |
2210 | { | |
2211 | layout_type (TREE_TYPE (fields[i])); | |
2212 | DECL_FIELD_CONTEXT (fields[i]) = type; | |
2213 | TREE_CHAIN (fields[i]) = fields[i+1]; | |
2214 | } | |
2215 | DECL_FIELD_CONTEXT (fields[i]) = type; | |
8d08fdba MS |
2216 | TYPE_ALIGN (type) = TYPE_ALIGN (align_type); |
2217 | layout_type (type); | |
2218 | #if 0 /* not yet, should get fixed properly later */ | |
2219 | TYPE_NAME (type) = make_type_decl (get_identifier (name), type); | |
2220 | #else | |
2221 | TYPE_NAME (type) = build_decl (TYPE_DECL, get_identifier (name), type); | |
2222 | #endif | |
d2e5ee5c | 2223 | TYPE_STUB_DECL (type) = TYPE_NAME (type); |
8d08fdba MS |
2224 | layout_decl (TYPE_NAME (type), 0); |
2225 | } | |
2226 | \f | |
2227 | /* Auxiliary functions to make type signatures for | |
2228 | `operator new' and `operator delete' correspond to | |
2229 | what compiler will be expecting. */ | |
2230 | ||
8d08fdba MS |
2231 | tree |
2232 | coerce_new_type (type) | |
2233 | tree type; | |
2234 | { | |
2235 | int e1 = 0, e2 = 0; | |
2236 | ||
2237 | if (TREE_CODE (type) == METHOD_TYPE) | |
2238 | type = build_function_type (TREE_TYPE (type), TREE_CHAIN (TYPE_ARG_TYPES (type))); | |
ee996e9e | 2239 | if (! same_type_p (TREE_TYPE (type), ptr_type_node)) |
8251199e | 2240 | e1 = 1, error ("`operator new' must return type `void *'"); |
8d08fdba MS |
2241 | |
2242 | /* Technically the type must be `size_t', but we may not know | |
2243 | what that is. */ | |
2244 | if (TYPE_ARG_TYPES (type) == NULL_TREE) | |
8251199e | 2245 | e1 = 1, error ("`operator new' takes type `size_t' parameter"); |
ee996e9e | 2246 | else if (! same_type_p (TREE_VALUE (TYPE_ARG_TYPES (type)), sizetype)) |
8251199e | 2247 | e2 = 1, error ("`operator new' takes type `size_t' as first parameter"); |
8d08fdba MS |
2248 | if (e2) |
2249 | type = build_function_type (ptr_type_node, tree_cons (NULL_TREE, sizetype, TREE_CHAIN (TYPE_ARG_TYPES (type)))); | |
2250 | else if (e1) | |
2251 | type = build_function_type (ptr_type_node, TYPE_ARG_TYPES (type)); | |
2252 | return type; | |
2253 | } | |
2254 | ||
2255 | tree | |
2256 | coerce_delete_type (type) | |
2257 | tree type; | |
2258 | { | |
a703fb38 KG |
2259 | int e1 = 0, e2 = 0; |
2260 | #if 0 | |
2261 | e3 = 0; | |
2262 | #endif | |
8d08fdba MS |
2263 | tree arg_types = TYPE_ARG_TYPES (type); |
2264 | ||
2265 | if (TREE_CODE (type) == METHOD_TYPE) | |
2266 | { | |
2267 | type = build_function_type (TREE_TYPE (type), TREE_CHAIN (arg_types)); | |
2268 | arg_types = TREE_CHAIN (arg_types); | |
2269 | } | |
824b9a4c | 2270 | |
8d08fdba | 2271 | if (TREE_TYPE (type) != void_type_node) |
8251199e | 2272 | e1 = 1, error ("`operator delete' must return type `void'"); |
824b9a4c | 2273 | |
8d08fdba | 2274 | if (arg_types == NULL_TREE |
ee996e9e | 2275 | || ! same_type_p (TREE_VALUE (arg_types), ptr_type_node)) |
8251199e | 2276 | e2 = 1, error ("`operator delete' takes type `void *' as first parameter"); |
8d08fdba | 2277 | |
da4768fe | 2278 | #if 0 |
8d08fdba MS |
2279 | if (arg_types |
2280 | && TREE_CHAIN (arg_types) | |
2281 | && TREE_CHAIN (arg_types) != void_list_node) | |
2282 | { | |
2283 | /* Again, technically this argument must be `size_t', but again | |
2284 | we may not know what that is. */ | |
2285 | tree t2 = TREE_VALUE (TREE_CHAIN (arg_types)); | |
ee996e9e | 2286 | if (! same_type_p (t2, sizetype)) |
8251199e | 2287 | e3 = 1, error ("second argument to `operator delete' must be of type `size_t'"); |
8d08fdba MS |
2288 | else if (TREE_CHAIN (TREE_CHAIN (arg_types)) != void_list_node) |
2289 | { | |
2290 | e3 = 1; | |
2291 | if (TREE_CHAIN (TREE_CHAIN (arg_types))) | |
8251199e | 2292 | error ("too many arguments in declaration of `operator delete'"); |
8d08fdba | 2293 | else |
8251199e | 2294 | error ("`...' invalid in specification of `operator delete'"); |
8d08fdba MS |
2295 | } |
2296 | } | |
824b9a4c | 2297 | |
8d08fdba | 2298 | if (e3) |
824b9a4c MS |
2299 | arg_types = tree_cons (NULL_TREE, ptr_type_node, |
2300 | build_tree_list (NULL_TREE, sizetype)); | |
8d08fdba MS |
2301 | else if (e3 |= e2) |
2302 | { | |
2303 | if (arg_types == NULL_TREE) | |
a28e3c7f | 2304 | arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node); |
8d08fdba MS |
2305 | else |
2306 | arg_types = tree_cons (NULL_TREE, ptr_type_node, TREE_CHAIN (arg_types)); | |
2307 | } | |
2308 | else e3 |= e1; | |
da4768fe | 2309 | #endif |
8d08fdba | 2310 | |
da4768fe JM |
2311 | if (e2) |
2312 | arg_types = tree_cons (NULL_TREE, ptr_type_node, | |
2313 | arg_types ? TREE_CHAIN (arg_types): NULL_TREE); | |
2314 | if (e2 || e1) | |
8d08fdba MS |
2315 | type = build_function_type (void_type_node, arg_types); |
2316 | ||
2317 | return type; | |
2318 | } | |
2319 | \f | |
2320 | static void | |
8926095f | 2321 | mark_vtable_entries (decl) |
8d08fdba MS |
2322 | tree decl; |
2323 | { | |
f30432d7 MS |
2324 | tree entries = CONSTRUCTOR_ELTS (DECL_INITIAL (decl)); |
2325 | ||
8d08fdba MS |
2326 | for (; entries; entries = TREE_CHAIN (entries)) |
2327 | { | |
aff08c18 JM |
2328 | tree fnaddr; |
2329 | tree fn; | |
2330 | ||
db39aa0b AO |
2331 | fnaddr = (flag_vtable_thunks ? TREE_VALUE (entries) |
2332 | : FNADDR_FROM_VTABLE_ENTRY (TREE_VALUE (entries))); | |
2333 | ||
bbd15aac MM |
2334 | if (TREE_CODE (fnaddr) != ADDR_EXPR) |
2335 | /* This entry is an offset: a virtual base class offset, a | |
2336 | virtual call offset, and RTTI offset, etc. */ | |
aff08c18 JM |
2337 | continue; |
2338 | ||
aff08c18 | 2339 | fn = TREE_OPERAND (fnaddr, 0); |
8926095f | 2340 | TREE_ADDRESSABLE (fn) = 1; |
a80e4195 MS |
2341 | if (TREE_CODE (fn) == THUNK_DECL && DECL_EXTERNAL (fn)) |
2342 | { | |
2343 | DECL_EXTERNAL (fn) = 0; | |
2344 | emit_thunk (fn); | |
2345 | } | |
5566b478 | 2346 | mark_used (fn); |
7177d104 MS |
2347 | } |
2348 | } | |
2349 | ||
d11ad92e MS |
2350 | /* Set DECL up to have the closest approximation of "initialized common" |
2351 | linkage available. */ | |
2352 | ||
2353 | void | |
2354 | comdat_linkage (decl) | |
2355 | tree decl; | |
2356 | { | |
d11ad92e | 2357 | if (flag_weak) |
7fcdf4c2 | 2358 | make_decl_one_only (decl); |
2f435bed JM |
2359 | else if (TREE_CODE (decl) == FUNCTION_DECL || DECL_VIRTUAL_P (decl)) |
2360 | /* We can just emit functions and vtables statically; it doesn't really | |
2361 | matter if we have multiple copies. */ | |
7fcdf4c2 | 2362 | TREE_PUBLIC (decl) = 0; |
ea735e02 JM |
2363 | else |
2364 | { | |
2f435bed JM |
2365 | /* Static data member template instantiations, however, cannot |
2366 | have multiple copies. */ | |
ea735e02 JM |
2367 | if (DECL_INITIAL (decl) == 0 |
2368 | || DECL_INITIAL (decl) == error_mark_node) | |
2369 | DECL_COMMON (decl) = 1; | |
2370 | else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))) | |
2371 | { | |
2372 | DECL_COMMON (decl) = 1; | |
2373 | DECL_INITIAL (decl) = error_mark_node; | |
2374 | } | |
2375 | else | |
2376 | { | |
2377 | /* We can't do anything useful; leave vars for explicit | |
2378 | instantiation. */ | |
2379 | DECL_EXTERNAL (decl) = 1; | |
2380 | DECL_NOT_REALLY_EXTERN (decl) = 0; | |
2381 | } | |
2382 | } | |
ab23f787 JM |
2383 | |
2384 | if (DECL_LANG_SPECIFIC (decl)) | |
2385 | DECL_COMDAT (decl) = 1; | |
d11ad92e MS |
2386 | } |
2387 | ||
b385c841 JM |
2388 | /* For win32 we also want to put explicit instantiations in |
2389 | linkonce sections, so that they will be merged with implicit | |
2390 | instantiations; otherwise we get duplicate symbol errors. */ | |
2391 | ||
2392 | void | |
2393 | maybe_make_one_only (decl) | |
2394 | tree decl; | |
2395 | { | |
b78121f6 JM |
2396 | /* We used to say that this was not necessary on targets that support weak |
2397 | symbols, because the implicit instantiations will defer to the explicit | |
2398 | one. However, that's not actually the case in SVR4; a strong definition | |
2399 | after a weak one is an error. Also, not making explicit | |
2400 | instantiations one_only means that we can end up with two copies of | |
2401 | some template instantiations. */ | |
2402 | if (! supports_one_only ()) | |
b385c841 JM |
2403 | return; |
2404 | ||
2405 | /* We can't set DECL_COMDAT on functions, or finish_file will think | |
ea735e02 JM |
2406 | we can get away with not emitting them if they aren't used. We need |
2407 | to for variables so that cp_finish_decl will update their linkage, | |
2408 | because their DECL_INITIAL may not have been set properly yet. */ | |
b385c841 | 2409 | |
ea735e02 JM |
2410 | make_decl_one_only (decl); |
2411 | ||
2412 | if (TREE_CODE (decl) == VAR_DECL && DECL_LANG_SPECIFIC (decl)) | |
2413 | DECL_COMDAT (decl) = 1; | |
b385c841 JM |
2414 | } |
2415 | ||
6db20143 JM |
2416 | /* Returns the virtual function with which the vtable for TYPE is |
2417 | emitted, or NULL_TREE if that heuristic is not applicable to TYPE. */ | |
2418 | ||
2419 | static tree | |
2420 | key_method (type) | |
2421 | tree type; | |
2422 | { | |
2423 | tree method; | |
2424 | ||
2425 | if (TYPE_FOR_JAVA (type) | |
6e9dcc25 | 2426 | || CLASSTYPE_TEMPLATE_INSTANTIATION (type) |
6db20143 JM |
2427 | || CLASSTYPE_INTERFACE_KNOWN (type)) |
2428 | return NULL_TREE; | |
2429 | ||
2430 | for (method = TYPE_METHODS (type); method != NULL_TREE; | |
2431 | method = TREE_CHAIN (method)) | |
2432 | if (DECL_VINDEX (method) != NULL_TREE | |
2433 | && ! DECL_THIS_INLINE (method) | |
2434 | && ! DECL_PURE_VIRTUAL_P (method)) | |
2435 | return method; | |
2436 | ||
2437 | return NULL_TREE; | |
2438 | } | |
2439 | ||
d18c083e | 2440 | /* Set TREE_PUBLIC and/or DECL_EXTERN on the vtable DECL, |
7177d104 MS |
2441 | based on TYPE and other static flags. |
2442 | ||
2443 | Note that anything public is tagged TREE_PUBLIC, whether | |
2444 | it's public in this file or in another one. */ | |
2445 | ||
5b605f68 | 2446 | void |
e3417fcd MS |
2447 | import_export_vtable (decl, type, final) |
2448 | tree decl, type; | |
2449 | int final; | |
7177d104 | 2450 | { |
e3417fcd MS |
2451 | if (DECL_INTERFACE_KNOWN (decl)) |
2452 | return; | |
2453 | ||
56ae6d77 | 2454 | if (TYPE_FOR_JAVA (type)) |
7177d104 MS |
2455 | { |
2456 | TREE_PUBLIC (decl) = 1; | |
56ae6d77 | 2457 | DECL_EXTERNAL (decl) = 1; |
e3417fcd MS |
2458 | DECL_INTERFACE_KNOWN (decl) = 1; |
2459 | } | |
2460 | else if (CLASSTYPE_INTERFACE_KNOWN (type)) | |
2461 | { | |
2462 | TREE_PUBLIC (decl) = 1; | |
2463 | DECL_EXTERNAL (decl) = ! CLASSTYPE_VTABLE_NEEDS_WRITING (type); | |
2464 | DECL_INTERFACE_KNOWN (decl) = 1; | |
2465 | } | |
2466 | else | |
2467 | { | |
b7484fbe MS |
2468 | /* We can only wait to decide if we have real non-inline virtual |
2469 | functions in our class, or if we come from a template. */ | |
e3417fcd | 2470 | |
6db20143 JM |
2471 | int found = (CLASSTYPE_TEMPLATE_INSTANTIATION (type) |
2472 | || key_method (type)); | |
e3417fcd MS |
2473 | |
2474 | if (final || ! found) | |
2475 | { | |
d11ad92e | 2476 | comdat_linkage (decl); |
e3417fcd | 2477 | DECL_EXTERNAL (decl) = 0; |
e3417fcd MS |
2478 | } |
2479 | else | |
2480 | { | |
2481 | TREE_PUBLIC (decl) = 1; | |
2482 | DECL_EXTERNAL (decl) = 1; | |
e3417fcd | 2483 | } |
8d08fdba MS |
2484 | } |
2485 | } | |
2486 | ||
7e776093 JM |
2487 | /* Determine whether or not we want to specifically import or export CTYPE, |
2488 | using various heuristics. */ | |
67f7c391 | 2489 | |
27d26ee7 | 2490 | static void |
67f7c391 JM |
2491 | import_export_class (ctype) |
2492 | tree ctype; | |
8d08fdba | 2493 | { |
7e776093 JM |
2494 | /* -1 for imported, 1 for exported. */ |
2495 | int import_export = 0; | |
2496 | ||
27d26ee7 MM |
2497 | /* It only makes sense to call this function at EOF. The reason is |
2498 | that this function looks at whether or not the first non-inline | |
2499 | non-abstract virtual member function has been defined in this | |
2500 | translation unit. But, we can't possibly know that until we've | |
2501 | seen the entire translation unit. */ | |
2502 | my_friendly_assert (at_eof, 20000226); | |
2503 | ||
7e776093 JM |
2504 | if (CLASSTYPE_INTERFACE_KNOWN (ctype)) |
2505 | return; | |
2506 | ||
e9659ab0 JM |
2507 | /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma interface, |
2508 | we will have CLASSTYPE_INTERFACE_ONLY set but not | |
2509 | CLASSTYPE_INTERFACE_KNOWN. In that case, we don't want to use this | |
2510 | heuristic because someone will supply a #pragma implementation | |
2511 | elsewhere, and deducing it here would produce a conflict. */ | |
2512 | if (CLASSTYPE_INTERFACE_ONLY (ctype)) | |
2513 | return; | |
2514 | ||
7e776093 JM |
2515 | #ifdef VALID_MACHINE_TYPE_ATTRIBUTE |
2516 | /* FIXME this should really use some sort of target-independent macro. */ | |
2517 | if (lookup_attribute ("dllimport", TYPE_ATTRIBUTES (ctype))) | |
7c913d33 | 2518 | import_export = -1; |
7e776093 | 2519 | else if (lookup_attribute ("dllexport", TYPE_ATTRIBUTES (ctype))) |
7c913d33 | 2520 | import_export = 1; |
7e776093 JM |
2521 | #endif |
2522 | ||
2523 | /* If we got -fno-implicit-templates, we import template classes that | |
2524 | weren't explicitly instantiated. */ | |
2525 | if (import_export == 0 | |
2526 | && CLASSTYPE_IMPLICIT_INSTANTIATION (ctype) | |
2527 | && ! flag_implicit_templates) | |
2528 | import_export = -1; | |
7177d104 | 2529 | |
7e776093 | 2530 | /* Base our import/export status on that of the first non-inline, |
6db20143 | 2531 | non-pure virtual function, if any. */ |
7e776093 | 2532 | if (import_export == 0 |
6e9dcc25 | 2533 | && TYPE_POLYMORPHIC_P (ctype)) |
51c184be | 2534 | { |
6db20143 JM |
2535 | tree method = key_method (ctype); |
2536 | if (method) | |
2537 | import_export = (DECL_REALLY_EXTERN (method) ? -1 : 1); | |
51c184be | 2538 | } |
ad236eab JM |
2539 | |
2540 | #ifdef MULTIPLE_SYMBOL_SPACES | |
2541 | if (import_export == -1) | |
2542 | import_export = 0; | |
c11b6f21 | 2543 | #endif |
7e776093 JM |
2544 | |
2545 | if (import_export) | |
2546 | { | |
2547 | SET_CLASSTYPE_INTERFACE_KNOWN (ctype); | |
2548 | CLASSTYPE_VTABLE_NEEDS_WRITING (ctype) = (import_export > 0); | |
2549 | CLASSTYPE_INTERFACE_ONLY (ctype) = (import_export < 0); | |
2550 | } | |
67f7c391 JM |
2551 | } |
2552 | ||
a1dd0d36 | 2553 | /* We need to describe to the assembler the relationship between |
59fa060f | 2554 | a vtable and the vtable of the parent class. */ |
a1dd0d36 JM |
2555 | |
2556 | static void | |
2557 | output_vtable_inherit (vars) | |
2558 | tree vars; | |
2559 | { | |
2560 | tree parent; | |
2561 | rtx op[2]; | |
2562 | ||
2563 | op[0] = XEXP (DECL_RTL (vars), 0); /* strip the mem ref */ | |
2564 | ||
2565 | parent = binfo_for_vtable (vars); | |
2566 | ||
2567 | if (parent == TYPE_BINFO (DECL_CONTEXT (vars))) | |
2568 | op[1] = const0_rtx; | |
2569 | else if (parent) | |
2570 | { | |
c35cce41 | 2571 | parent = get_vtbl_decl_for_binfo (TYPE_BINFO (BINFO_TYPE (parent))); |
a1dd0d36 JM |
2572 | op[1] = XEXP (DECL_RTL (parent), 0); /* strip the mem ref */ |
2573 | } | |
2574 | else | |
2575 | my_friendly_abort (980826); | |
2576 | ||
59fa060f | 2577 | output_asm_insn (".vtable_inherit %c0, %c1", op); |
a1dd0d36 JM |
2578 | } |
2579 | ||
fc378698 | 2580 | static int |
0aafb128 MM |
2581 | finish_vtable_vardecl (t, data) |
2582 | tree *t; | |
2583 | void *data ATTRIBUTE_UNUSED; | |
d18c083e | 2584 | { |
0aafb128 | 2585 | tree vars = *t; |
2455f26f JM |
2586 | tree ctype = DECL_CONTEXT (vars); |
2587 | import_export_class (ctype); | |
2588 | import_export_vtable (vars, ctype, 1); | |
2589 | ||
56ae6d77 | 2590 | if (! DECL_EXTERNAL (vars) |
6db20143 | 2591 | && DECL_NEEDED_P (vars) |
fc378698 | 2592 | && ! TREE_ASM_WRITTEN (vars)) |
d18c083e | 2593 | { |
1aa4ccd4 NS |
2594 | if (TREE_TYPE (vars) == void_type_node) |
2595 | /* It is a dummy vtable made by get_vtable_decl. Ignore it. */ | |
2596 | return 0; | |
2597 | ||
8d08fdba | 2598 | /* Write it out. */ |
8926095f | 2599 | mark_vtable_entries (vars); |
8d08fdba | 2600 | if (TREE_TYPE (DECL_INITIAL (vars)) == 0) |
b7484fbe | 2601 | store_init_value (vars, DECL_INITIAL (vars)); |
8d08fdba | 2602 | |
faf5394a | 2603 | if (write_symbols == DWARF_DEBUG || write_symbols == DWARF2_DEBUG) |
8d08fdba MS |
2604 | { |
2605 | /* Mark the VAR_DECL node representing the vtable itself as a | |
2606 | "gratuitous" one, thereby forcing dwarfout.c to ignore it. | |
2607 | It is rather important that such things be ignored because | |
2608 | any effort to actually generate DWARF for them will run | |
2609 | into trouble when/if we encounter code like: | |
2610 | ||
2611 | #pragma interface | |
2612 | struct S { virtual void member (); }; | |
2613 | ||
2614 | because the artificial declaration of the vtable itself (as | |
2615 | manufactured by the g++ front end) will say that the vtable | |
2616 | is a static member of `S' but only *after* the debug output | |
2617 | for the definition of `S' has already been output. This causes | |
2618 | grief because the DWARF entry for the definition of the vtable | |
2619 | will try to refer back to an earlier *declaration* of the | |
2620 | vtable as a static member of `S' and there won't be one. | |
2621 | We might be able to arrange to have the "vtable static member" | |
2622 | attached to the member list for `S' before the debug info for | |
2623 | `S' get written (which would solve the problem) but that would | |
2624 | require more intrusive changes to the g++ front end. */ | |
2625 | ||
2626 | DECL_IGNORED_P (vars) = 1; | |
2627 | } | |
8d08fdba | 2628 | |
e2213efb JM |
2629 | /* Always make vtables weak. */ |
2630 | if (flag_weak) | |
2631 | comdat_linkage (vars); | |
2632 | ||
311862c8 | 2633 | rest_of_decl_compilation (vars, NULL_PTR, 1, 1); |
a1dd0d36 JM |
2634 | |
2635 | if (flag_vtable_gc) | |
2636 | output_vtable_inherit (vars); | |
2637 | ||
84df082b MM |
2638 | /* Because we're only doing syntax-checking, we'll never end up |
2639 | actually marking the variable as written. */ | |
2640 | if (flag_syntax_only) | |
2641 | TREE_ASM_WRITTEN (vars) = 1; | |
2642 | ||
ae673f14 JM |
2643 | /* Since we're writing out the vtable here, also write the debug |
2644 | info. */ | |
6db20143 | 2645 | note_debug_info_needed (ctype); |
ae673f14 | 2646 | |
fc378698 | 2647 | return 1; |
8d08fdba | 2648 | } |
6db20143 JM |
2649 | |
2650 | /* If the references to this class' vtables were optimized away, still | |
2651 | emit the appropriate debugging information. See dfs_debug_mark. */ | |
2652 | if (DECL_COMDAT (vars) | |
2653 | && CLASSTYPE_DEBUG_REQUESTED (ctype)) | |
2654 | note_debug_info_needed (ctype); | |
b7484fbe | 2655 | |
fc378698 | 2656 | return 0; |
b7484fbe MS |
2657 | } |
2658 | ||
fc378698 | 2659 | static int |
0aafb128 MM |
2660 | prune_vtable_vardecl (t, data) |
2661 | tree *t; | |
2662 | void *data ATTRIBUTE_UNUSED; | |
b7484fbe | 2663 | { |
0aafb128 | 2664 | *t = TREE_CHAIN (*t); |
fc378698 | 2665 | return 1; |
8d08fdba MS |
2666 | } |
2667 | ||
00595019 | 2668 | /* Determines the proper settings of TREE_PUBLIC and DECL_EXTERNAL for an |
5566b478 | 2669 | inline function or template instantiation at end-of-file. */ |
00595019 MS |
2670 | |
2671 | void | |
5566b478 | 2672 | import_export_decl (decl) |
00595019 MS |
2673 | tree decl; |
2674 | { | |
db5ae43f | 2675 | if (DECL_INTERFACE_KNOWN (decl)) |
00595019 MS |
2676 | return; |
2677 | ||
61289ca3 MM |
2678 | if (DECL_TEMPLATE_INSTANTIATION (decl) |
2679 | || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (decl)) | |
00595019 | 2680 | { |
5566b478 | 2681 | DECL_NOT_REALLY_EXTERN (decl) = 1; |
61289ca3 MM |
2682 | if ((DECL_IMPLICIT_INSTANTIATION (decl) |
2683 | || DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (decl)) | |
5eea678f JM |
2684 | && (flag_implicit_templates |
2685 | || (flag_implicit_inline_templates && DECL_THIS_INLINE (decl)))) | |
a9aedbc2 | 2686 | { |
75650646 MM |
2687 | if (!TREE_PUBLIC (decl)) |
2688 | /* Templates are allowed to have internal linkage. See | |
2689 | [basic.link]. */ | |
2690 | ; | |
d11ad92e | 2691 | else |
ea735e02 | 2692 | comdat_linkage (decl); |
a9aedbc2 | 2693 | } |
db5ae43f | 2694 | else |
faae18ab | 2695 | DECL_NOT_REALLY_EXTERN (decl) = 0; |
00595019 MS |
2696 | } |
2697 | else if (DECL_FUNCTION_MEMBER_P (decl)) | |
2698 | { | |
4f1c5b7d | 2699 | tree ctype = DECL_CONTEXT (decl); |
8452b1d3 | 2700 | import_export_class (ctype); |
047f64a3 | 2701 | if (CLASSTYPE_INTERFACE_KNOWN (ctype) |
2aaf816d JM |
2702 | && (flag_new_abi |
2703 | ? (! DECL_THIS_INLINE (decl)) | |
2704 | : (! DECL_ARTIFICIAL (decl) || DECL_VINDEX (decl)))) | |
00595019 | 2705 | { |
faae18ab MS |
2706 | DECL_NOT_REALLY_EXTERN (decl) |
2707 | = ! (CLASSTYPE_INTERFACE_ONLY (ctype) | |
9c73ec84 MS |
2708 | || (DECL_THIS_INLINE (decl) && ! flag_implement_inlines |
2709 | && !DECL_VINDEX (decl))); | |
1a408d07 JM |
2710 | |
2711 | /* Always make artificials weak. */ | |
2712 | if (DECL_ARTIFICIAL (decl) && flag_weak) | |
2713 | comdat_linkage (decl); | |
1f901793 JM |
2714 | else |
2715 | maybe_make_one_only (decl); | |
00595019 | 2716 | } |
db5ae43f | 2717 | else |
d11ad92e | 2718 | comdat_linkage (decl); |
00595019 | 2719 | } |
0aafb128 | 2720 | else if (DECL_TINFO_FN_P (decl)) |
6b5fbb55 MS |
2721 | { |
2722 | tree ctype = TREE_TYPE (DECL_NAME (decl)); | |
8452b1d3 JM |
2723 | |
2724 | if (IS_AGGR_TYPE (ctype)) | |
2725 | import_export_class (ctype); | |
2726 | ||
d11ad92e | 2727 | if (IS_AGGR_TYPE (ctype) && CLASSTYPE_INTERFACE_KNOWN (ctype) |
4c6b7393 | 2728 | && TYPE_POLYMORPHIC_P (ctype) |
db48b831 JM |
2729 | /* If -fno-rtti, we're not necessarily emitting this stuff with |
2730 | the class, so go ahead and emit it now. This can happen | |
2731 | when a class is used in exception handling. */ | |
2732 | && flag_rtti | |
af9c2d8a MM |
2733 | /* If the type is a cv-qualified variant of a type, then we |
2734 | must emit the tinfo function in this translation unit | |
2735 | since it will not be emitted when the vtable for the type | |
2736 | is output (which is when the unqualified version is | |
2737 | generated). */ | |
1b5f5f76 | 2738 | && same_type_p (ctype, TYPE_MAIN_VARIANT (ctype))) |
7e776093 | 2739 | { |
6b5fbb55 | 2740 | DECL_NOT_REALLY_EXTERN (decl) |
7e776093 | 2741 | = ! (CLASSTYPE_INTERFACE_ONLY (ctype) |
9c73ec84 MS |
2742 | || (DECL_THIS_INLINE (decl) && ! flag_implement_inlines |
2743 | && !DECL_VINDEX (decl))); | |
eb773359 | 2744 | |
1a408d07 JM |
2745 | /* Always make artificials weak. */ |
2746 | if (flag_weak) | |
2747 | comdat_linkage (decl); | |
6b5fbb55 | 2748 | } |
1b5f5f76 MM |
2749 | else if (TYPE_BUILT_IN (ctype) |
2750 | && same_type_p (ctype, TYPE_MAIN_VARIANT (ctype))) | |
6b5fbb55 | 2751 | DECL_NOT_REALLY_EXTERN (decl) = 0; |
6b5fbb55 | 2752 | else |
d11ad92e | 2753 | comdat_linkage (decl); |
6b5fbb55 | 2754 | } |
db5ae43f | 2755 | else |
d11ad92e | 2756 | comdat_linkage (decl); |
e8abc66f MS |
2757 | |
2758 | DECL_INTERFACE_KNOWN (decl) = 1; | |
00595019 | 2759 | } |
db5ae43f | 2760 | |
72b7eeff MS |
2761 | tree |
2762 | build_cleanup (decl) | |
2763 | tree decl; | |
2764 | { | |
2765 | tree temp; | |
2766 | tree type = TREE_TYPE (decl); | |
2767 | ||
2768 | if (TREE_CODE (type) == ARRAY_TYPE) | |
2769 | temp = decl; | |
2770 | else | |
2771 | { | |
2772 | mark_addressable (decl); | |
2773 | temp = build1 (ADDR_EXPR, build_pointer_type (type), decl); | |
2774 | } | |
2775 | temp = build_delete (TREE_TYPE (temp), temp, | |
2776 | integer_two_node, | |
2777 | LOOKUP_NORMAL|LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR, 0); | |
2778 | return temp; | |
2779 | } | |
2780 | ||
824b9a4c | 2781 | static tree |
67d743fe MS |
2782 | get_sentry (base) |
2783 | tree base; | |
2784 | { | |
2785 | tree sname = get_id_2 ("__sn", base); | |
2c73f9f5 | 2786 | /* For struct X foo __attribute__((weak)), there is a counter |
30394414 JM |
2787 | __snfoo. Since base is already an assembler name, sname should |
2788 | be globally unique */ | |
67d743fe | 2789 | tree sentry = IDENTIFIER_GLOBAL_VALUE (sname); |
b9bfacf0 | 2790 | |
67d743fe MS |
2791 | if (! sentry) |
2792 | { | |
67d743fe MS |
2793 | sentry = build_decl (VAR_DECL, sname, integer_type_node); |
2794 | TREE_PUBLIC (sentry) = 1; | |
2795 | DECL_ARTIFICIAL (sentry) = 1; | |
2796 | TREE_STATIC (sentry) = 1; | |
2797 | TREE_USED (sentry) = 1; | |
2798 | DECL_COMMON (sentry) = 1; | |
2799 | pushdecl_top_level (sentry); | |
cd9f6678 | 2800 | cp_finish_decl (sentry, NULL_TREE, NULL_TREE, 0); |
67d743fe MS |
2801 | } |
2802 | return sentry; | |
2803 | } | |
2804 | ||
961ec1a5 JM |
2805 | /* Start the process of running a particular set of global constructors |
2806 | or destructors. Subroutine of do_[cd]tors. */ | |
2807 | ||
914653a2 | 2808 | static tree |
2ce3c6c6 JM |
2809 | start_objects (method_type, initp) |
2810 | int method_type, initp; | |
961ec1a5 JM |
2811 | { |
2812 | tree fnname; | |
914653a2 | 2813 | tree body; |
2ce3c6c6 | 2814 | char type[10]; |
961ec1a5 JM |
2815 | |
2816 | /* Make ctor or dtor function. METHOD_TYPE may be 'I' or 'D'. */ | |
2817 | ||
000ab922 | 2818 | if (initp != DEFAULT_INIT_PRIORITY) |
2ce3c6c6 | 2819 | { |
066d147c MH |
2820 | char joiner; |
2821 | ||
2822 | #ifdef JOINER | |
2823 | joiner = JOINER; | |
2824 | #else | |
2825 | joiner = '_'; | |
2826 | #endif | |
2ce3c6c6 | 2827 | |
066d147c | 2828 | sprintf (type, "%c%c%.5u", method_type, joiner, initp); |
2ce3c6c6 JM |
2829 | } |
2830 | else | |
2831 | sprintf (type, "%c", method_type); | |
2832 | ||
2833 | fnname = get_file_function_name_long (type); | |
961ec1a5 JM |
2834 | |
2835 | start_function (void_list_node, | |
2836 | make_call_declarator (fnname, void_list_node, NULL_TREE, | |
2837 | NULL_TREE), | |
914653a2 | 2838 | NULL_TREE, SF_DEFAULT); |
961ec1a5 | 2839 | |
b4bb92e5 | 2840 | #if defined(ASM_OUTPUT_CONSTRUCTOR) && defined(ASM_OUTPUT_DESTRUCTOR) |
14686fcd JL |
2841 | /* It can be a static function as long as collect2 does not have |
2842 | to scan the object file to find its ctor/dtor routine. */ | |
b4bb92e5 L |
2843 | TREE_PUBLIC (current_function_decl) = 0; |
2844 | #endif | |
2845 | ||
5fdaba89 MM |
2846 | /* Mark this declaration as used to avoid spurious warnings. */ |
2847 | TREE_USED (current_function_decl) = 1; | |
2848 | ||
2b76013c MM |
2849 | /* Mark this function as a global constructor or destructor. */ |
2850 | if (method_type == 'I') | |
2851 | DECL_GLOBAL_CTOR_P (current_function_decl) = 1; | |
2852 | else | |
2853 | DECL_GLOBAL_DTOR_P (current_function_decl) = 1; | |
2854 | GLOBAL_INIT_PRIORITY (current_function_decl) = initp; | |
2855 | ||
914653a2 | 2856 | body = begin_compound_stmt (/*has_no_scope=*/0); |
b3f738da MM |
2857 | |
2858 | /* We cannot allow these functions to be elided, even if they do not | |
2859 | have external linkage. And, there's no point in deferring | |
2860 | copmilation of thes functions; they're all going to have to be | |
2861 | out anyhow. */ | |
2862 | current_function_cannot_inline | |
2863 | = "static constructors and destructors cannot be inlined"; | |
914653a2 MM |
2864 | |
2865 | return body; | |
961ec1a5 JM |
2866 | } |
2867 | ||
2868 | /* Finish the process of running a particular set of global constructors | |
2869 | or destructors. Subroutine of do_[cd]tors. */ | |
2870 | ||
2871 | static void | |
914653a2 | 2872 | finish_objects (method_type, initp, body) |
2ce3c6c6 | 2873 | int method_type, initp; |
914653a2 | 2874 | tree body; |
961ec1a5 | 2875 | { |
3cce094d | 2876 | const char *fnname; |
914653a2 | 2877 | tree fn; |
961ec1a5 JM |
2878 | |
2879 | /* Finish up. */ | |
914653a2 | 2880 | finish_compound_stmt(/*has_no_scope=*/0, body); |
0acf7199 | 2881 | fn = finish_function (0); |
914653a2 | 2882 | expand_body (fn); |
961ec1a5 | 2883 | |
84df082b MM |
2884 | /* When only doing semantic analysis, and no RTL generation, we |
2885 | can't call functions that directly emit assembly code; there is | |
2886 | no assembly file in which to put the code. */ | |
2887 | if (flag_syntax_only) | |
2888 | return; | |
2889 | ||
914653a2 | 2890 | fnname = XSTR (XEXP (DECL_RTL (fn), 0), 0); |
000ab922 | 2891 | if (initp == DEFAULT_INIT_PRIORITY) |
2ce3c6c6 JM |
2892 | { |
2893 | if (method_type == 'I') | |
2894 | assemble_constructor (fnname); | |
2895 | else | |
2896 | assemble_destructor (fnname); | |
2897 | } | |
7a8f9fa9 | 2898 | #if defined (ASM_OUTPUT_SECTION_NAME) && defined (ASM_OUTPUT_CONSTRUCTOR) |
2ce3c6c6 JM |
2899 | /* If we're using init priority we can't use assemble_*tor, but on ELF |
2900 | targets we can stick the references into named sections for GNU ld | |
2901 | to collect. */ | |
000ab922 | 2902 | else |
2ce3c6c6 JM |
2903 | { |
2904 | char buf[15]; | |
2ce3c6c6 JM |
2905 | sprintf (buf, ".%ctors.%.5u", method_type == 'I' ? 'c' : 'd', |
2906 | /* invert the numbering so the linker puts us in the proper | |
2907 | order; constructors are run from right to left, and the | |
2908 | linker sorts in increasing order. */ | |
2909 | MAX_INIT_PRIORITY - initp); | |
2910 | named_section (NULL_TREE, buf, 0); | |
2911 | assemble_integer (gen_rtx_SYMBOL_REF (Pmode, fnname), | |
2912 | POINTER_SIZE / BITS_PER_UNIT, 1); | |
2913 | } | |
2914 | #endif | |
961ec1a5 JM |
2915 | } |
2916 | ||
0aafb128 MM |
2917 | /* The names of the parameters to the function created to handle |
2918 | initializations and destructions for objects with static storage | |
2919 | duration. */ | |
2920 | #define INITIALIZE_P_IDENTIFIER "__initialize_p" | |
2921 | #define PRIORITY_IDENTIFIER "__priority" | |
2922 | ||
2923 | /* The name of the function we create to handle initializations and | |
2924 | destructions for objects with static storage duration. */ | |
2925 | #define SSDF_IDENTIFIER "__static_initialization_and_destruction" | |
2926 | ||
2927 | /* The declaration for the __INITIALIZE_P argument. */ | |
2928 | static tree initialize_p_decl; | |
2929 | ||
2930 | /* The declaration for the __PRIORITY argument. */ | |
2931 | static tree priority_decl; | |
2932 | ||
2933 | /* The declaration for the static storage duration function. */ | |
2934 | static tree ssdf_decl; | |
2935 | ||
0352cfc8 MM |
2936 | /* All the static storage duration functions created in this |
2937 | translation unit. */ | |
2938 | static varray_type ssdf_decls; | |
0352cfc8 | 2939 | |
0aafb128 MM |
2940 | /* A map from priority levels to information about that priority |
2941 | level. There may be many such levels, so efficient lookup is | |
2942 | important. */ | |
2943 | static splay_tree priority_info_map; | |
2944 | ||
2945 | /* Begins the generation of the function that will handle all | |
2946 | initialization and destruction of objects with static storage | |
2947 | duration. The function generated takes two parameters of type | |
2948 | `int': __INITIALIZE_P and __PRIORITY. If __INITIALIZE_P is | |
2949 | non-zero, it performs initializations. Otherwise, it performs | |
2950 | destructions. It only performs those initializations or | |
2951 | destructions with the indicated __PRIORITY. The generated function | |
2952 | returns no value. | |
2953 | ||
2954 | It is assumed that this function will only be called once per | |
2955 | translation unit. */ | |
961ec1a5 | 2956 | |
313bc2c2 | 2957 | static tree |
0aafb128 | 2958 | start_static_storage_duration_function () |
961ec1a5 | 2959 | { |
0352cfc8 MM |
2960 | static unsigned ssdf_number; |
2961 | ||
0aafb128 MM |
2962 | tree parm_types; |
2963 | tree type; | |
313bc2c2 | 2964 | tree body; |
0352cfc8 MM |
2965 | char id[sizeof (SSDF_IDENTIFIER) + 1 /* '\0' */ + 32]; |
2966 | ||
2967 | /* Create the identifier for this function. It will be of the form | |
2968 | SSDF_IDENTIFIER_<number>. */ | |
2969 | sprintf (id, "%s_%u", SSDF_IDENTIFIER, ssdf_number++); | |
2970 | if (ssdf_number == 0) | |
2971 | { | |
2972 | /* Overflow occurred. That means there are at least 4 billion | |
2973 | initialization functions. */ | |
2974 | sorry ("too many initialization functions required"); | |
2975 | my_friendly_abort (19990430); | |
2976 | } | |
0aafb128 MM |
2977 | |
2978 | /* Create the parameters. */ | |
2979 | parm_types = void_list_node; | |
e1b3e07d MM |
2980 | parm_types = tree_cons (NULL_TREE, integer_type_node, parm_types); |
2981 | parm_types = tree_cons (NULL_TREE, integer_type_node, parm_types); | |
0aafb128 MM |
2982 | type = build_function_type (void_type_node, parm_types); |
2983 | ||
2984 | /* Create the FUNCTION_DECL itself. */ | |
2985 | ssdf_decl = build_lang_decl (FUNCTION_DECL, | |
0352cfc8 | 2986 | get_identifier (id), |
0aafb128 MM |
2987 | type); |
2988 | TREE_PUBLIC (ssdf_decl) = 0; | |
2989 | DECL_ARTIFICIAL (ssdf_decl) = 1; | |
0352cfc8 MM |
2990 | |
2991 | /* Put this function in the list of functions to be called from the | |
2992 | static constructors and destructors. */ | |
2993 | if (!ssdf_decls) | |
2994 | { | |
2995 | VARRAY_TREE_INIT (ssdf_decls, 32, "ssdf_decls"); | |
2996 | ||
2997 | /* Take this opportunity to initialize the map from priority | |
2998 | numbers to information about that priority level. */ | |
2999 | priority_info_map = splay_tree_new (splay_tree_compare_ints, | |
3000 | /*delete_key_fn=*/0, | |
3001 | /*delete_value_fn=*/ | |
3002 | (splay_tree_delete_value_fn) &free); | |
3003 | ||
3004 | /* We always need to generate functions for the | |
3005 | DEFAULT_INIT_PRIORITY so enter it now. That way when we walk | |
3006 | priorities later, we'll be sure to find the | |
3007 | DEFAULT_INIT_PRIORITY. */ | |
3008 | get_priority_info (DEFAULT_INIT_PRIORITY); | |
3009 | } | |
3010 | ||
2c0f17dc | 3011 | VARRAY_PUSH_TREE (ssdf_decls, ssdf_decl); |
0aafb128 MM |
3012 | |
3013 | /* Create the argument list. */ | |
3014 | initialize_p_decl = build_decl (PARM_DECL, | |
3015 | get_identifier (INITIALIZE_P_IDENTIFIER), | |
3016 | integer_type_node); | |
3017 | DECL_CONTEXT (initialize_p_decl) = ssdf_decl; | |
3018 | DECL_ARG_TYPE (initialize_p_decl) = integer_type_node; | |
3019 | TREE_USED (initialize_p_decl) = 1; | |
3020 | priority_decl = build_decl (PARM_DECL, get_identifier (PRIORITY_IDENTIFIER), | |
3021 | integer_type_node); | |
3022 | DECL_CONTEXT (priority_decl) = ssdf_decl; | |
3023 | DECL_ARG_TYPE (priority_decl) = integer_type_node; | |
3024 | TREE_USED (priority_decl) = 1; | |
3025 | ||
3026 | TREE_CHAIN (initialize_p_decl) = priority_decl; | |
3027 | DECL_ARGUMENTS (ssdf_decl) = initialize_p_decl; | |
3028 | ||
13ef1ec5 MM |
3029 | /* Put the function in the global scope. */ |
3030 | pushdecl (ssdf_decl); | |
3031 | ||
0aafb128 MM |
3032 | /* Start the function itself. This is equivalent to declarating the |
3033 | function as: | |
3034 | ||
c472cdfd | 3035 | static void __ssdf (int __initialize_p, init __priority_p); |
0aafb128 MM |
3036 | |
3037 | It is static because we only need to call this function from the | |
3038 | various constructor and destructor functions for this module. */ | |
3039 | start_function (/*specs=*/NULL_TREE, | |
3040 | ssdf_decl, | |
3041 | /*attrs=*/NULL_TREE, | |
313bc2c2 | 3042 | SF_PRE_PARSED); |
0aafb128 MM |
3043 | |
3044 | /* Set up the scope of the outermost block in the function. */ | |
313bc2c2 | 3045 | body = begin_compound_stmt (/*has_no_scope=*/0); |
2ce3c6c6 | 3046 | |
0352cfc8 MM |
3047 | /* This function must not be deferred because we are depending on |
3048 | its compilation to tell us what is TREE_SYMBOL_REFERENCED. */ | |
3049 | current_function_cannot_inline | |
3050 | = "static storage duration functions cannot be inlined"; | |
961ec1a5 | 3051 | |
313bc2c2 | 3052 | return body; |
961ec1a5 JM |
3053 | } |
3054 | ||
0aafb128 MM |
3055 | /* Finish the generation of the function which performs initialization |
3056 | and destruction of objects with static storage duration. After | |
3057 | this point, no more such objects can be created. */ | |
961ec1a5 JM |
3058 | |
3059 | static void | |
313bc2c2 MM |
3060 | finish_static_storage_duration_function (body) |
3061 | tree body; | |
961ec1a5 | 3062 | { |
0aafb128 | 3063 | /* Close out the function. */ |
313bc2c2 | 3064 | finish_compound_stmt (/*has_no_scope=*/0, body); |
0acf7199 | 3065 | expand_body (finish_function (0)); |
0aafb128 | 3066 | } |
961ec1a5 | 3067 | |
0aafb128 MM |
3068 | /* Return the information about the indicated PRIORITY level. If no |
3069 | code to handle this level has yet been generated, generate the | |
3070 | appropriate prologue. */ | |
961ec1a5 | 3071 | |
0aafb128 MM |
3072 | static priority_info |
3073 | get_priority_info (priority) | |
3074 | int priority; | |
3075 | { | |
3076 | priority_info pi; | |
3077 | splay_tree_node n; | |
3078 | ||
3079 | n = splay_tree_lookup (priority_info_map, | |
3080 | (splay_tree_key) priority); | |
3081 | if (!n) | |
3082 | { | |
3083 | /* Create a new priority information structure, and insert it | |
3084 | into the map. */ | |
3085 | pi = (priority_info) xmalloc (sizeof (struct priority_info_s)); | |
0352cfc8 MM |
3086 | pi->initializations_p = 0; |
3087 | pi->destructions_p = 0; | |
0aafb128 MM |
3088 | splay_tree_insert (priority_info_map, |
3089 | (splay_tree_key) priority, | |
3090 | (splay_tree_value) pi); | |
3091 | } | |
3092 | else | |
3093 | pi = (priority_info) n->value; | |
961ec1a5 | 3094 | |
0aafb128 MM |
3095 | return pi; |
3096 | } | |
961ec1a5 | 3097 | |
313bc2c2 MM |
3098 | /* Set up to handle the initialization or destruction of DECL. If |
3099 | INITP is non-zero, we are initializing the variable. Otherwise, we | |
3100 | are destroying it. */ | |
3101 | ||
3102 | static tree | |
3103 | start_static_initialization_or_destruction (decl, initp) | |
3104 | tree decl; | |
3105 | int initp; | |
3106 | { | |
3107 | tree sentry_if_stmt = NULL_TREE; | |
3108 | int priority; | |
3109 | tree cond; | |
3110 | tree init_cond; | |
3111 | priority_info pi; | |
3112 | ||
3113 | /* Figure out the priority for this declaration. */ | |
3114 | priority = DECL_INIT_PRIORITY (decl); | |
3115 | if (!priority) | |
3116 | priority = DEFAULT_INIT_PRIORITY; | |
3117 | ||
3118 | /* Remember that we had an initialization or finalization at this | |
3119 | priority. */ | |
3120 | pi = get_priority_info (priority); | |
3121 | if (initp) | |
3122 | pi->initializations_p = 1; | |
3123 | else | |
3124 | pi->destructions_p = 1; | |
3125 | ||
3126 | /* Trick the compiler into thinking we are at the file and line | |
3127 | where DECL was declared so that error-messages make sense, and so | |
3128 | that the debugger will show somewhat sensible file and line | |
3129 | information. */ | |
3130 | input_filename = DECL_SOURCE_FILE (decl); | |
3131 | lineno = DECL_SOURCE_LINE (decl); | |
3132 | ||
3133 | /* Because of: | |
3134 | ||
3135 | [class.access.spec] | |
3136 | ||
3137 | Access control for implicit calls to the constructors, | |
3138 | the conversion functions, or the destructor called to | |
3139 | create and destroy a static data member is performed as | |
3140 | if these calls appeared in the scope of the member's | |
3141 | class. | |
3142 | ||
3143 | we pretend we are in a static member function of the class of | |
3144 | which the DECL is a member. */ | |
3145 | if (member_p (decl)) | |
3146 | { | |
4f1c5b7d | 3147 | DECL_CONTEXT (current_function_decl) = DECL_CONTEXT (decl); |
313bc2c2 MM |
3148 | DECL_STATIC_FUNCTION_P (current_function_decl) = 1; |
3149 | } | |
3150 | ||
3151 | /* Conditionalize this initialization on being in the right priority | |
3152 | and being initializing/finalizing appropriately. */ | |
3153 | sentry_if_stmt = begin_if_stmt (); | |
3154 | cond = build_binary_op (EQ_EXPR, | |
3155 | priority_decl, | |
3156 | build_int_2 (priority, 0)); | |
3157 | init_cond = initp ? integer_one_node : integer_zero_node; | |
3158 | init_cond = build_binary_op (EQ_EXPR, | |
3159 | initialize_p_decl, | |
3160 | init_cond); | |
3161 | cond = build_binary_op (TRUTH_ANDIF_EXPR, cond, init_cond); | |
3162 | ||
3163 | /* We need a sentry if this is an object with external linkage that | |
3164 | might be initialized in more than one place. */ | |
3165 | if (TREE_PUBLIC (decl) && (DECL_COMMON (decl) | |
3166 | || DECL_ONE_ONLY (decl) | |
3167 | || DECL_WEAK (decl))) | |
3168 | { | |
3169 | tree sentry; | |
3170 | tree sentry_cond; | |
3171 | ||
3172 | sentry = get_sentry (DECL_ASSEMBLER_NAME (decl)); | |
3173 | ||
3174 | /* We do initializations only if the SENTRY is zero, i.e., if we | |
3175 | are the first to initialize the variable. We do destructions | |
3176 | only if the SENTRY is one, i.e., if we are the last to | |
3177 | destroy the variable. */ | |
3178 | if (initp) | |
3179 | sentry_cond = build_binary_op (EQ_EXPR, | |
3180 | build_unary_op (PREINCREMENT_EXPR, | |
3181 | sentry, | |
3182 | /*noconvert=*/1), | |
3183 | integer_one_node); | |
3184 | else | |
3185 | sentry_cond = build_binary_op (EQ_EXPR, | |
3186 | build_unary_op (PREDECREMENT_EXPR, | |
3187 | sentry, | |
3188 | /*noconvert=*/1), | |
3189 | integer_zero_node); | |
3190 | ||
3191 | cond = build_binary_op (TRUTH_ANDIF_EXPR, cond, sentry_cond); | |
3192 | } | |
3193 | ||
3194 | finish_if_stmt_cond (cond, sentry_if_stmt); | |
3195 | ||
3196 | return sentry_if_stmt; | |
3197 | } | |
3198 | ||
3199 | /* We've just finished generating code to do an initialization or | |
3200 | finalization. SENTRY_IF_STMT is the if-statement we used to guard | |
3201 | the initialization. */ | |
3202 | ||
3203 | static void | |
3204 | finish_static_initialization_or_destruction (sentry_if_stmt) | |
3205 | tree sentry_if_stmt; | |
3206 | { | |
3207 | finish_then_clause (sentry_if_stmt); | |
3208 | finish_if_stmt (); | |
3209 | ||
3210 | /* Now that we're done with DECL we don't need to pretend to be a | |
3211 | member of its class any longer. */ | |
4f1c5b7d | 3212 | DECL_CONTEXT (current_function_decl) = NULL_TREE; |
313bc2c2 MM |
3213 | DECL_STATIC_FUNCTION_P (current_function_decl) = 0; |
3214 | } | |
3215 | ||
0aafb128 MM |
3216 | /* Generate code to do the static initialization of DECL. The |
3217 | initialization is INIT. If DECL may be initialized more than once | |
3218 | in different object files, SENTRY is the guard variable to | |
3219 | check. PRIORITY is the priority for the initialization. */ | |
961ec1a5 | 3220 | |
0aafb128 | 3221 | static void |
313bc2c2 | 3222 | do_static_initialization (decl, init) |
0aafb128 MM |
3223 | tree decl; |
3224 | tree init; | |
0aafb128 | 3225 | { |
313bc2c2 MM |
3226 | tree expr; |
3227 | tree sentry_if_stmt; | |
961ec1a5 | 3228 | |
313bc2c2 MM |
3229 | /* Set up for the initialization. */ |
3230 | sentry_if_stmt | |
3231 | = start_static_initialization_or_destruction (decl, | |
3232 | /*initp=*/1); | |
0aafb128 | 3233 | |
313bc2c2 | 3234 | /* Do the initialization itself. */ |
0aafb128 MM |
3235 | if (IS_AGGR_TYPE (TREE_TYPE (decl)) |
3236 | || TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE) | |
313bc2c2 | 3237 | expr = build_aggr_init (decl, init, 0); |
0aafb128 | 3238 | else if (TREE_CODE (init) == TREE_VEC) |
313bc2c2 MM |
3239 | expr = build_vec_init (decl, TREE_VEC_ELT (init, 0), |
3240 | TREE_VEC_ELT (init, 1), | |
3241 | TREE_VEC_ELT (init, 2), 0); | |
0aafb128 | 3242 | else |
313bc2c2 MM |
3243 | { |
3244 | expr = build (INIT_EXPR, TREE_TYPE (decl), decl, init); | |
3245 | TREE_SIDE_EFFECTS (expr) = 1; | |
3246 | } | |
3247 | finish_expr_stmt (expr); | |
961ec1a5 | 3248 | |
bf419747 MM |
3249 | /* If we're using __cxa_atexit, register a a function that calls the |
3250 | destructor for the object. */ | |
3251 | if (flag_use_cxa_atexit) | |
3252 | register_dtor_fn (decl); | |
3253 | ||
313bc2c2 MM |
3254 | /* Finsh up. */ |
3255 | finish_static_initialization_or_destruction (sentry_if_stmt); | |
0aafb128 | 3256 | } |
961ec1a5 | 3257 | |
0aafb128 MM |
3258 | /* Generate code to do the static destruction of DECL. If DECL may be |
3259 | initialized more than once in different object files, SENTRY is the | |
3260 | guard variable to check. PRIORITY is the priority for the | |
3261 | destruction. */ | |
3262 | ||
3263 | static void | |
313bc2c2 | 3264 | do_static_destruction (decl) |
0aafb128 | 3265 | tree decl; |
0aafb128 | 3266 | { |
313bc2c2 | 3267 | tree sentry_if_stmt; |
961ec1a5 | 3268 | |
bf419747 MM |
3269 | /* If we're using __cxa_atexit, then destructors are registered |
3270 | immediately after objects are initialized. */ | |
3271 | my_friendly_assert (!flag_use_cxa_atexit, 20000121); | |
3272 | ||
0aafb128 | 3273 | /* If we don't need a destructor, there's nothing to do. */ |
834c6dff | 3274 | if (TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl))) |
0aafb128 | 3275 | return; |
bf419747 | 3276 | |
f1dedc31 | 3277 | /* Actually do the destruction. */ |
313bc2c2 MM |
3278 | sentry_if_stmt = start_static_initialization_or_destruction (decl, |
3279 | /*initp=*/0); | |
3280 | finish_expr_stmt (build_cleanup (decl)); | |
3281 | finish_static_initialization_or_destruction (sentry_if_stmt); | |
961ec1a5 JM |
3282 | } |
3283 | ||
313bc2c2 MM |
3284 | /* VARS is a list of variables with static storage duration which may |
3285 | need initialization and/or finalization. Remove those variables | |
3286 | that don't really need to be initialized or finalized, and return | |
3287 | the resulting list. The order in which the variables appear in | |
3288 | VARS is in reverse order of the order in which they should actually | |
3289 | be initialized. The list we return is in the unreversed order; | |
3290 | i.e., the first variable should be initialized first. */ | |
8d08fdba | 3291 | |
313bc2c2 MM |
3292 | static tree |
3293 | prune_vars_needing_no_initialization (vars) | |
3294 | tree vars; | |
8d08fdba | 3295 | { |
313bc2c2 MM |
3296 | tree var; |
3297 | tree result; | |
8d08fdba | 3298 | |
313bc2c2 MM |
3299 | for (var = vars, result = NULL_TREE; |
3300 | var; | |
3301 | var = TREE_CHAIN (var)) | |
3302 | { | |
3303 | tree decl = TREE_VALUE (var); | |
3304 | tree init = TREE_PURPOSE (var); | |
8d2733ca | 3305 | |
313bc2c2 MM |
3306 | /* Deal gracefully with error. */ |
3307 | if (decl == error_mark_node) | |
3308 | continue; | |
5566b478 | 3309 | |
313bc2c2 MM |
3310 | /* The only things that can be initialized are variables. */ |
3311 | my_friendly_assert (TREE_CODE (decl) == VAR_DECL, 19990420); | |
8d08fdba | 3312 | |
313bc2c2 MM |
3313 | /* If this object is not defined, we don't need to do anything |
3314 | here. */ | |
3315 | if (DECL_EXTERNAL (decl)) | |
3316 | continue; | |
8d08fdba | 3317 | |
313bc2c2 MM |
3318 | /* Also, if the initializer already contains errors, we can bail |
3319 | out now. */ | |
3320 | if (init && TREE_CODE (init) == TREE_LIST | |
3321 | && value_member (error_mark_node, init)) | |
3322 | continue; | |
d18c083e | 3323 | |
313bc2c2 MM |
3324 | /* This variable is going to need initialization and/or |
3325 | finalization, so we add it to the list. */ | |
3326 | result = tree_cons (init, decl, result); | |
3327 | } | |
1139b3d8 | 3328 | |
313bc2c2 MM |
3329 | return result; |
3330 | } | |
1139b3d8 | 3331 | |
313bc2c2 MM |
3332 | /* Make sure we have told the back end about all the variables in |
3333 | VARS. */ | |
0aafb128 | 3334 | |
313bc2c2 MM |
3335 | static void |
3336 | write_out_vars (vars) | |
3337 | tree vars; | |
3338 | { | |
3339 | tree v; | |
0aafb128 | 3340 | |
313bc2c2 MM |
3341 | for (v = vars; v; v = TREE_CHAIN (v)) |
3342 | if (! TREE_ASM_WRITTEN (TREE_VALUE (v))) | |
3343 | rest_of_decl_compilation (TREE_VALUE (v), 0, 1, 1); | |
0aafb128 | 3344 | } |
909e536a | 3345 | |
0aafb128 MM |
3346 | /* Generate a static constructor (if CONSTRUCTOR_P) or destructor |
3347 | (otherwise) that will initialize all gobal objects with static | |
3348 | storage duration having the indicated PRIORITY. */ | |
73aad9b9 | 3349 | |
0aafb128 MM |
3350 | static void |
3351 | generate_ctor_or_dtor_function (constructor_p, priority) | |
3352 | int constructor_p; | |
3353 | int priority; | |
3354 | { | |
3355 | char function_key; | |
3356 | tree arguments; | |
914653a2 | 3357 | tree body; |
0352cfc8 | 3358 | size_t i; |
73aad9b9 | 3359 | |
0aafb128 MM |
3360 | /* We use `I' to indicate initialization and `D' to indicate |
3361 | destruction. */ | |
3362 | if (constructor_p) | |
3363 | function_key = 'I'; | |
3364 | else | |
3365 | function_key = 'D'; | |
73aad9b9 | 3366 | |
0aafb128 | 3367 | /* Begin the function. */ |
914653a2 | 3368 | body = start_objects (function_key, priority); |
2c73f9f5 | 3369 | |
0aafb128 MM |
3370 | /* Call the static storage duration function with appropriate |
3371 | arguments. */ | |
2c0f17dc | 3372 | for (i = 0; i < ssdf_decls->elements_used; ++i) |
0352cfc8 MM |
3373 | { |
3374 | arguments = tree_cons (NULL_TREE, build_int_2 (priority, 0), | |
3375 | NULL_TREE); | |
3376 | arguments = tree_cons (NULL_TREE, build_int_2 (constructor_p, 0), | |
3377 | arguments); | |
914653a2 | 3378 | finish_expr_stmt (build_function_call (VARRAY_TREE (ssdf_decls, i), |
0352cfc8 MM |
3379 | arguments)); |
3380 | } | |
909e536a | 3381 | |
0aafb128 MM |
3382 | /* If we're generating code for the DEFAULT_INIT_PRIORITY, throw in |
3383 | calls to any functions marked with attributes indicating that | |
3384 | they should be called at initialization- or destruction-time. */ | |
3385 | if (priority == DEFAULT_INIT_PRIORITY) | |
3386 | { | |
3387 | tree fns; | |
3388 | ||
3389 | for (fns = constructor_p ? static_ctors : static_dtors; | |
3390 | fns; | |
3391 | fns = TREE_CHAIN (fns)) | |
914653a2 | 3392 | finish_expr_stmt (build_function_call (TREE_VALUE (fns), NULL_TREE)); |
0aafb128 | 3393 | } |
28cbf42c | 3394 | |
0aafb128 | 3395 | /* Close out the function. */ |
914653a2 | 3396 | finish_objects (function_key, priority, body); |
0aafb128 | 3397 | } |
44a8d0b3 | 3398 | |
0aafb128 | 3399 | /* Generate constructor and destructor functions for the priority |
0352cfc8 | 3400 | indicated by N. */ |
44a8d0b3 | 3401 | |
0aafb128 MM |
3402 | static int |
3403 | generate_ctor_and_dtor_functions_for_priority (n, data) | |
3404 | splay_tree_node n; | |
0352cfc8 | 3405 | void *data ATTRIBUTE_UNUSED; |
0aafb128 MM |
3406 | { |
3407 | int priority = (int) n->key; | |
3408 | priority_info pi = (priority_info) n->value; | |
0aafb128 MM |
3409 | |
3410 | /* Generate the functions themselves, but only if they are really | |
3411 | needed. */ | |
0352cfc8 | 3412 | if (pi->initializations_p |
0aafb128 MM |
3413 | || (priority == DEFAULT_INIT_PRIORITY && static_ctors)) |
3414 | generate_ctor_or_dtor_function (/*constructor_p=*/1, | |
3415 | priority); | |
0352cfc8 | 3416 | if (pi->destructions_p |
0aafb128 MM |
3417 | || (priority == DEFAULT_INIT_PRIORITY && static_dtors)) |
3418 | generate_ctor_or_dtor_function (/*constructor_p=*/0, | |
3419 | priority); | |
3420 | ||
3421 | /* Keep iterating. */ | |
3422 | return 0; | |
3423 | } | |
2ce3c6c6 | 3424 | |
0aafb128 MM |
3425 | /* This routine is called from the last rule in yyparse (). |
3426 | Its job is to create all the code needed to initialize and | |
3427 | destroy the global aggregates. We do the destruction | |
3428 | first, since that way we only need to reverse the decls once. */ | |
44a8d0b3 | 3429 | |
0aafb128 MM |
3430 | void |
3431 | finish_file () | |
3432 | { | |
0aafb128 MM |
3433 | tree vars; |
3434 | int reconsider; | |
3435 | size_t i; | |
8d08fdba | 3436 | |
0aafb128 | 3437 | at_eof = 1; |
faae18ab | 3438 | |
0aafb128 MM |
3439 | /* Bad parse errors. Just forget about it. */ |
3440 | if (! global_bindings_p () || current_class_type || decl_namespace_list) | |
3441 | return; | |
8d08fdba | 3442 | |
0aafb128 MM |
3443 | /* Otherwise, GDB can get confused, because in only knows |
3444 | about source for LINENO-1 lines. */ | |
3445 | lineno -= 1; | |
5566b478 | 3446 | |
0aafb128 MM |
3447 | interface_unknown = 1; |
3448 | interface_only = 0; | |
ea735e02 | 3449 | |
0aafb128 MM |
3450 | /* We now have to write out all the stuff we put off writing out. |
3451 | These include: | |
d2e5ee5c | 3452 | |
0aafb128 MM |
3453 | o Template specializations that we have not yet instantiated, |
3454 | but which are needed. | |
3455 | o Initialization and destruction for non-local objects with | |
3456 | static storage duration. (Local objects with static storage | |
3457 | duration are initialized when their scope is first entered, | |
3458 | and are cleaned up via atexit.) | |
3459 | o Virtual function tables. | |
ea735e02 | 3460 | |
0aafb128 MM |
3461 | All of these may cause others to be needed. For example, |
3462 | instantiating one function may cause another to be needed, and | |
3463 | generating the intiailzer for an object may cause templates to be | |
3464 | instantiated, etc., etc. */ | |
8d08fdba | 3465 | |
2a9a326b | 3466 | timevar_push (TV_VARCONST); |
8d08fdba | 3467 | |
7267d692 NS |
3468 | if (new_abi_rtti_p ()) |
3469 | emit_support_tinfos (); | |
3470 | ||
0aafb128 MM |
3471 | do |
3472 | { | |
3473 | reconsider = 0; | |
3474 | ||
1a6580ec MM |
3475 | /* If there are templates that we've put off instantiating, do |
3476 | them now. */ | |
0aafb128 MM |
3477 | instantiate_pending_templates (); |
3478 | ||
6eabb241 MM |
3479 | /* Write out virtual tables as required. Note that writing out |
3480 | the virtual table for a template class may cause the | |
3481 | instantiation of members of that class. */ | |
0aafb128 MM |
3482 | if (walk_globals (vtable_decl_p, |
3483 | finish_vtable_vardecl, | |
3484 | /*data=*/0)) | |
3485 | reconsider = 1; | |
3486 | ||
7267d692 NS |
3487 | /* Write out needed type info variables. Writing out one variable |
3488 | might cause others to be needed. */ | |
3489 | if (new_abi_rtti_p () | |
3490 | && walk_globals (tinfo_decl_p, emit_tinfo_decl, /*data=*/0)) | |
3491 | reconsider = 1; | |
3492 | ||
0aafb128 | 3493 | /* The list of objects with static storage duration is built up |
313bc2c2 MM |
3494 | in reverse order. We clear STATIC_AGGREGATES so that any new |
3495 | aggregates added during the initialization of these will be | |
3496 | initialized in the correct order when we next come around the | |
3497 | loop. */ | |
3498 | vars = prune_vars_needing_no_initialization (static_aggregates); | |
0aafb128 | 3499 | static_aggregates = NULL_TREE; |
c472cdfd | 3500 | |
313bc2c2 MM |
3501 | if (vars) |
3502 | { | |
3503 | tree v; | |
3504 | ||
3505 | /* We need to start a new initialization function each time | |
3506 | through the loop. That's because we need to know which | |
3507 | vtables have been referenced, and TREE_SYMBOL_REFERENCED | |
3508 | isn't computed until a function is finished, and written | |
3509 | out. That's a deficiency in the back-end. When this is | |
3510 | fixed, these initialization functions could all become | |
3511 | inline, with resulting performance improvements. */ | |
3512 | tree ssdf_body = start_static_storage_duration_function (); | |
3513 | ||
3514 | /* Make sure the back end knows about all the variables. */ | |
3515 | write_out_vars (vars); | |
3516 | ||
3517 | /* First generate code to do all the initializations. */ | |
3518 | for (v = vars; v; v = TREE_CHAIN (v)) | |
3519 | do_static_initialization (TREE_VALUE (v), | |
3520 | TREE_PURPOSE (v)); | |
3521 | ||
3522 | /* Then, generate code to do all the destructions. Do these | |
3523 | in reverse order so that the most recently constructed | |
bf419747 MM |
3524 | variable is the first destroyed. If we're using |
3525 | __cxa_atexit, then we don't need to do this; functions | |
4c0aad2c | 3526 | were registered at initialization time to destroy the |
bf419747 MM |
3527 | local statics. */ |
3528 | if (!flag_use_cxa_atexit) | |
3529 | { | |
3530 | vars = nreverse (vars); | |
3531 | for (v = vars; v; v = TREE_CHAIN (v)) | |
3532 | do_static_destruction (TREE_VALUE (v)); | |
3533 | } | |
3534 | else | |
3535 | vars = NULL_TREE; | |
313bc2c2 MM |
3536 | |
3537 | /* Finish up the static storage duration function for this | |
3538 | round. */ | |
3539 | finish_static_storage_duration_function (ssdf_body); | |
3540 | ||
3541 | /* All those initializations and finalizations might cause | |
3542 | us to need more inline functions, more template | |
3543 | instantiations, etc. */ | |
0aafb128 | 3544 | reconsider = 1; |
0aafb128 | 3545 | } |
0aafb128 MM |
3546 | |
3547 | /* Go through the various inline functions, and see if any need | |
3548 | synthesizing. */ | |
56e770bf | 3549 | for (i = 0; i < deferred_fns_used; ++i) |
0aafb128 | 3550 | { |
56e770bf | 3551 | tree decl = VARRAY_TREE (deferred_fns, i); |
0aafb128 MM |
3552 | import_export_decl (decl); |
3553 | if (DECL_ARTIFICIAL (decl) && ! DECL_INITIAL (decl) | |
3554 | && TREE_USED (decl) | |
3555 | && (! DECL_REALLY_EXTERN (decl) || DECL_INLINE (decl))) | |
3556 | { | |
3557 | /* Even though we're already at the top-level, we push | |
3558 | there again. That way, when we pop back a few lines | |
3559 | hence, all of our state is restored. Otherwise, | |
3560 | finish_function doesn't clean things up, and we end | |
3561 | up with CURRENT_FUNCTION_DECL set. */ | |
3562 | push_to_top_level (); | |
3563 | if (DECL_TINFO_FN_P (decl)) | |
3564 | synthesize_tinfo_fn (decl); | |
3565 | else | |
3566 | synthesize_method (decl); | |
3567 | pop_from_top_level (); | |
3568 | reconsider = 1; | |
3569 | } | |
3570 | } | |
0aafb128 | 3571 | |
0352cfc8 MM |
3572 | /* Mark all functions that might deal with exception-handling as |
3573 | referenced. */ | |
3574 | mark_all_runtime_matches (); | |
0aafb128 | 3575 | |
0352cfc8 MM |
3576 | /* We lie to the back-end, pretending that some functions are |
3577 | not defined when they really are. This keeps these functions | |
3578 | from being put out unncessarily. But, we must stop lying | |
3579 | when the functions are referenced, or if they are not comdat | |
3580 | since they need to be put out now. */ | |
56e770bf | 3581 | for (i = 0; i < deferred_fns_used; ++i) |
4cb02ea1 | 3582 | { |
56e770bf | 3583 | tree decl = VARRAY_TREE (deferred_fns, i); |
4cb02ea1 MM |
3584 | |
3585 | if (DECL_NOT_REALLY_EXTERN (decl) | |
3586 | && DECL_INITIAL (decl) | |
7c913d33 | 3587 | && DECL_NEEDED_P (decl)) |
4cb02ea1 | 3588 | DECL_EXTERNAL (decl) = 0; |
21b0c6dc MM |
3589 | |
3590 | /* If we're going to need to write this function out, and | |
3591 | there's already a body for it, create RTL for it now. | |
3592 | (There might be no body if this is a method we haven't | |
3593 | gotten around to synthesizing yet.) */ | |
3594 | if (!DECL_EXTERNAL (decl) | |
7c913d33 | 3595 | && DECL_NEEDED_P (decl) |
21b0c6dc MM |
3596 | && DECL_SAVED_TREE (decl) |
3597 | && !DECL_SAVED_INSNS (decl) | |
3598 | && !TREE_ASM_WRITTEN (decl)) | |
3599 | { | |
3600 | int saved_not_really_extern; | |
3601 | ||
3602 | /* When we call finish_function in expand_body, it will | |
3603 | try to reset DECL_NOT_REALLY_EXTERN so we save and | |
3604 | restore it here. */ | |
1c1c0761 | 3605 | saved_not_really_extern = DECL_NOT_REALLY_EXTERN (decl); |
21b0c6dc MM |
3606 | /* Generate RTL for this function now that we know we |
3607 | need it. */ | |
3608 | expand_body (decl); | |
3609 | /* Undo the damage done by finish_function. */ | |
3610 | DECL_EXTERNAL (decl) = 0; | |
3611 | DECL_NOT_REALLY_EXTERN (decl) = saved_not_really_extern; | |
3612 | /* If we're compiling -fsyntax-only pretend that this | |
3613 | function has been written out so that we don't try to | |
3614 | expand it again. */ | |
3615 | if (flag_syntax_only) | |
3616 | TREE_ASM_WRITTEN (decl) = 1; | |
3617 | reconsider = 1; | |
3618 | } | |
4cb02ea1 MM |
3619 | } |
3620 | ||
56e770bf MM |
3621 | if (deferred_fns_used |
3622 | && wrapup_global_declarations (&VARRAY_TREE (deferred_fns, 0), | |
3623 | deferred_fns_used)) | |
4cb02ea1 | 3624 | reconsider = 1; |
4cb02ea1 MM |
3625 | if (walk_namespaces (wrapup_globals_for_namespace, /*data=*/0)) |
3626 | reconsider = 1; | |
0aafb128 MM |
3627 | |
3628 | /* Static data members are just like namespace-scope globals. */ | |
3629 | for (i = 0; i < pending_statics_used; ++i) | |
3630 | { | |
3631 | tree decl = VARRAY_TREE (pending_statics, i); | |
3632 | if (TREE_ASM_WRITTEN (decl)) | |
3633 | continue; | |
3634 | import_export_decl (decl); | |
3635 | if (DECL_NOT_REALLY_EXTERN (decl) && ! DECL_IN_AGGR_P (decl)) | |
3636 | DECL_EXTERNAL (decl) = 0; | |
3637 | } | |
4cb02ea1 MM |
3638 | if (pending_statics |
3639 | && wrapup_global_declarations (&VARRAY_TREE (pending_statics, 0), | |
3640 | pending_statics_used)) | |
3641 | reconsider = 1; | |
0352cfc8 | 3642 | } |
0aafb128 | 3643 | while (reconsider); |
28cbf42c | 3644 | |
0352cfc8 MM |
3645 | /* We give C linkage to static constructors and destructors. */ |
3646 | push_lang_context (lang_name_c); | |
3647 | ||
3648 | /* Generate initialization and destruction functions for all | |
3649 | priorities for which they are required. */ | |
3650 | if (priority_info_map) | |
3651 | splay_tree_foreach (priority_info_map, | |
3652 | generate_ctor_and_dtor_functions_for_priority, | |
3653 | /*data=*/0); | |
3654 | ||
3655 | /* We're done with the splay-tree now. */ | |
3656 | if (priority_info_map) | |
3657 | splay_tree_delete (priority_info_map); | |
3658 | ||
3659 | /* We're done with static constructors, so we can go back to "C++" | |
3660 | linkage now. */ | |
3661 | pop_lang_context (); | |
3662 | ||
3663 | /* Now delete from the chain of variables all virtual function tables. | |
3664 | We output them all ourselves, because each will be treated | |
84df082b MM |
3665 | specially. We don't do this if we're just doing semantic |
3666 | analysis, and not code-generation. */ | |
3667 | if (!flag_syntax_only) | |
3668 | walk_globals (vtable_decl_p, prune_vtable_vardecl, /*data=*/0); | |
0352cfc8 | 3669 | |
0aafb128 | 3670 | /* Now, issue warnings about static, but not defined, functions, |
033ed340 | 3671 | etc., and emit debugging information. */ |
0aafb128 | 3672 | walk_namespaces (wrapup_globals_for_namespace, /*data=*/&reconsider); |
033ed340 JM |
3673 | if (pending_statics) |
3674 | check_global_declarations (&VARRAY_TREE (pending_statics, 0), | |
3675 | pending_statics_used); | |
b7484fbe | 3676 | |
faae18ab MS |
3677 | finish_repo (); |
3678 | ||
f71f87f9 | 3679 | /* The entire file is now complete. If requested, dump everything |
ed5511d9 | 3680 | to a file. */ |
f71f87f9 MM |
3681 | if (flag_dump_translation_unit) |
3682 | dump_node_to_file (global_namespace, flag_dump_translation_unit); | |
3683 | ||
1b12a13e MM |
3684 | /* If there's some tool that wants to examine the entire translation |
3685 | unit, let it do so now. */ | |
3686 | if (back_end_hook) | |
3687 | (*back_end_hook) (global_namespace); | |
3688 | ||
2a9a326b | 3689 | timevar_pop (TV_VARCONST); |
8d08fdba MS |
3690 | |
3691 | if (flag_detailed_statistics) | |
27bb8339 JM |
3692 | { |
3693 | dump_tree_statistics (); | |
3694 | dump_time_statistics (); | |
3695 | } | |
8d08fdba | 3696 | } |
51c184be MS |
3697 | |
3698 | /* This is something of the form 'A()()()()()+1' that has turned out to be an | |
3699 | expr. Since it was parsed like a type, we need to wade through and fix | |
3700 | that. Unfortunately, since operator() is left-associative, we can't use | |
3701 | tail recursion. In the above example, TYPE is `A', and DECL is | |
3702 | `()()()()()'. | |
3703 | ||
3704 | Maybe this shouldn't be recursive, but how often will it actually be | |
3705 | used? (jason) */ | |
e92cc029 | 3706 | |
51c184be MS |
3707 | tree |
3708 | reparse_absdcl_as_expr (type, decl) | |
3709 | tree type, decl; | |
3710 | { | |
3711 | /* do build_functional_cast (type, NULL_TREE) at bottom */ | |
3712 | if (TREE_OPERAND (decl, 0) == NULL_TREE) | |
3713 | return build_functional_cast (type, NULL_TREE); | |
3714 | ||
3715 | /* recurse */ | |
d8f8dca1 | 3716 | decl = reparse_absdcl_as_expr (type, TREE_OPERAND (decl, 0)); |
51c184be | 3717 | |
4ac14744 | 3718 | decl = build_x_function_call (decl, NULL_TREE, current_class_ref); |
51c184be | 3719 | |
66543169 NS |
3720 | if (TREE_CODE (decl) == CALL_EXPR |
3721 | && (! TREE_TYPE (decl) | |
3722 | || TREE_CODE (TREE_TYPE (decl)) != VOID_TYPE)) | |
51c184be MS |
3723 | decl = require_complete_type (decl); |
3724 | ||
3725 | return decl; | |
3726 | } | |
3727 | ||
3728 | /* This is something of the form `int ((int)(int)(int)1)' that has turned | |
3729 | out to be an expr. Since it was parsed like a type, we need to wade | |
3730 | through and fix that. Since casts are right-associative, we are | |
3731 | reversing the order, so we don't have to recurse. | |
3732 | ||
3733 | In the above example, DECL is the `(int)(int)(int)', and EXPR is the | |
3734 | `1'. */ | |
e92cc029 | 3735 | |
51c184be MS |
3736 | tree |
3737 | reparse_absdcl_as_casts (decl, expr) | |
3738 | tree decl, expr; | |
3739 | { | |
3740 | tree type; | |
3741 | ||
4ac14744 MS |
3742 | if (TREE_CODE (expr) == CONSTRUCTOR |
3743 | && TREE_TYPE (expr) == 0) | |
51c184be | 3744 | { |
43f887f9 | 3745 | type = groktypename (TREE_VALUE (CALL_DECLARATOR_PARMS (decl))); |
51c184be MS |
3746 | decl = TREE_OPERAND (decl, 0); |
3747 | ||
51c184be | 3748 | expr = digest_init (type, expr, (tree *) 0); |
d0f062fb | 3749 | if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type)) |
51c184be MS |
3750 | { |
3751 | int failure = complete_array_type (type, expr, 1); | |
3752 | if (failure) | |
3753 | my_friendly_abort (78); | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | while (decl) | |
3758 | { | |
43f887f9 | 3759 | type = groktypename (TREE_VALUE (CALL_DECLARATOR_PARMS (decl))); |
51c184be | 3760 | decl = TREE_OPERAND (decl, 0); |
faf5394a | 3761 | expr = build_c_cast (type, expr); |
51c184be MS |
3762 | } |
3763 | ||
1d02ac83 JM |
3764 | if (warn_old_style_cast && ! in_system_header |
3765 | && current_lang_name != lang_name_c) | |
8251199e | 3766 | warning ("use of old-style cast"); |
0c4b14c4 | 3767 | |
51c184be MS |
3768 | return expr; |
3769 | } | |
3770 | ||
e92cc029 | 3771 | /* Given plain tree nodes for an expression, build up the full semantics. */ |
5566b478 MS |
3772 | |
3773 | tree | |
3774 | build_expr_from_tree (t) | |
3775 | tree t; | |
51c184be | 3776 | { |
5566b478 MS |
3777 | if (t == NULL_TREE || t == error_mark_node) |
3778 | return t; | |
3779 | ||
3780 | switch (TREE_CODE (t)) | |
51c184be MS |
3781 | { |
3782 | case IDENTIFIER_NODE: | |
a759e627 | 3783 | return do_identifier (t, 0, NULL_TREE); |
5566b478 MS |
3784 | |
3785 | case LOOKUP_EXPR: | |
3786 | if (LOOKUP_EXPR_GLOBAL (t)) | |
3787 | return do_scoped_id (TREE_OPERAND (t, 0), 0); | |
3788 | else | |
a759e627 | 3789 | return do_identifier (TREE_OPERAND (t, 0), 0, NULL_TREE); |
5566b478 | 3790 | |
386b8a85 | 3791 | case TEMPLATE_ID_EXPR: |
00d3396f JM |
3792 | return (lookup_template_function |
3793 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3794 | build_expr_from_tree (TREE_OPERAND (t, 1)))); | |
386b8a85 | 3795 | |
51c184be MS |
3796 | case INDIRECT_REF: |
3797 | return build_x_indirect_ref | |
5566b478 MS |
3798 | (build_expr_from_tree (TREE_OPERAND (t, 0)), "unary *"); |
3799 | ||
3800 | case CAST_EXPR: | |
3801 | return build_functional_cast | |
3802 | (TREE_TYPE (t), build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3803 | ||
3804 | case REINTERPRET_CAST_EXPR: | |
3805 | return build_reinterpret_cast | |
3806 | (TREE_TYPE (t), build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3807 | ||
e92cc029 MS |
3808 | case CONST_CAST_EXPR: |
3809 | return build_const_cast | |
3810 | (TREE_TYPE (t), build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3811 | ||
3812 | case DYNAMIC_CAST_EXPR: | |
3813 | return build_dynamic_cast | |
3814 | (TREE_TYPE (t), build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3815 | ||
3816 | case STATIC_CAST_EXPR: | |
3817 | return build_static_cast | |
3818 | (TREE_TYPE (t), build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3819 | ||
5566b478 MS |
3820 | case PREDECREMENT_EXPR: |
3821 | case PREINCREMENT_EXPR: | |
3822 | case POSTDECREMENT_EXPR: | |
3823 | case POSTINCREMENT_EXPR: | |
3824 | case NEGATE_EXPR: | |
51c184be | 3825 | case BIT_NOT_EXPR: |
5566b478 MS |
3826 | case ABS_EXPR: |
3827 | case TRUTH_NOT_EXPR: | |
3828 | case ADDR_EXPR: | |
3829 | case CONVERT_EXPR: /* Unary + */ | |
f5733617 SS |
3830 | case REALPART_EXPR: |
3831 | case IMAGPART_EXPR: | |
fc378698 MS |
3832 | if (TREE_TYPE (t)) |
3833 | return t; | |
5566b478 MS |
3834 | return build_x_unary_op (TREE_CODE (t), |
3835 | build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3836 | ||
3837 | case PLUS_EXPR: | |
3838 | case MINUS_EXPR: | |
3839 | case MULT_EXPR: | |
3840 | case TRUNC_DIV_EXPR: | |
3841 | case CEIL_DIV_EXPR: | |
3842 | case FLOOR_DIV_EXPR: | |
3843 | case ROUND_DIV_EXPR: | |
3844 | case EXACT_DIV_EXPR: | |
3845 | case BIT_AND_EXPR: | |
3846 | case BIT_ANDTC_EXPR: | |
3847 | case BIT_IOR_EXPR: | |
3848 | case BIT_XOR_EXPR: | |
3849 | case TRUNC_MOD_EXPR: | |
3850 | case FLOOR_MOD_EXPR: | |
3851 | case TRUTH_ANDIF_EXPR: | |
3852 | case TRUTH_ORIF_EXPR: | |
3853 | case TRUTH_AND_EXPR: | |
3854 | case TRUTH_OR_EXPR: | |
3855 | case RSHIFT_EXPR: | |
3856 | case LSHIFT_EXPR: | |
3857 | case RROTATE_EXPR: | |
3858 | case LROTATE_EXPR: | |
3859 | case EQ_EXPR: | |
3860 | case NE_EXPR: | |
3861 | case MAX_EXPR: | |
3862 | case MIN_EXPR: | |
3863 | case LE_EXPR: | |
3864 | case GE_EXPR: | |
3865 | case LT_EXPR: | |
3866 | case GT_EXPR: | |
3867 | case MEMBER_REF: | |
3868 | return build_x_binary_op | |
3869 | (TREE_CODE (t), | |
3870 | build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3871 | build_expr_from_tree (TREE_OPERAND (t, 1))); | |
3872 | ||
3873 | case DOTSTAR_EXPR: | |
3874 | return build_m_component_ref | |
3875 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3876 | build_expr_from_tree (TREE_OPERAND (t, 1))); | |
3877 | ||
a28e3c7f | 3878 | case SCOPE_REF: |
5566b478 MS |
3879 | return build_offset_ref (TREE_OPERAND (t, 0), TREE_OPERAND (t, 1)); |
3880 | ||
a28e3c7f | 3881 | case ARRAY_REF: |
5566b478 MS |
3882 | if (TREE_OPERAND (t, 0) == NULL_TREE) |
3883 | /* new-type-id */ | |
3884 | return build_parse_node (ARRAY_REF, NULL_TREE, | |
3885 | build_expr_from_tree (TREE_OPERAND (t, 1))); | |
3886 | return grok_array_decl (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3887 | build_expr_from_tree (TREE_OPERAND (t, 1))); | |
3888 | ||
3889 | case SIZEOF_EXPR: | |
abff8e06 | 3890 | case ALIGNOF_EXPR: |
5566b478 MS |
3891 | { |
3892 | tree r = build_expr_from_tree (TREE_OPERAND (t, 0)); | |
2f939d94 | 3893 | if (!TYPE_P (r)) |
5566b478 | 3894 | r = TREE_TYPE (r); |
abff8e06 | 3895 | return TREE_CODE (t) == SIZEOF_EXPR ? c_sizeof (r) : c_alignof (r); |
5566b478 MS |
3896 | } |
3897 | ||
3898 | case MODOP_EXPR: | |
3899 | return build_x_modify_expr | |
3900 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3901 | TREE_CODE (TREE_OPERAND (t, 1)), | |
3902 | build_expr_from_tree (TREE_OPERAND (t, 2))); | |
3903 | ||
3904 | case ARROW_EXPR: | |
3905 | return build_x_arrow | |
3906 | (build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3907 | ||
3908 | case NEW_EXPR: | |
3909 | return build_new | |
3910 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3911 | build_expr_from_tree (TREE_OPERAND (t, 1)), | |
3912 | build_expr_from_tree (TREE_OPERAND (t, 2)), | |
3913 | NEW_EXPR_USE_GLOBAL (t)); | |
3914 | ||
3915 | case DELETE_EXPR: | |
3916 | return delete_sanity | |
3917 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3918 | build_expr_from_tree (TREE_OPERAND (t, 1)), | |
3919 | DELETE_EXPR_USE_VEC (t), DELETE_EXPR_USE_GLOBAL (t)); | |
3920 | ||
3921 | case COMPOUND_EXPR: | |
3922 | if (TREE_OPERAND (t, 1) == NULL_TREE) | |
3923 | return build_x_compound_expr | |
3924 | (build_expr_from_tree (TREE_OPERAND (t, 0))); | |
3925 | else | |
3926 | my_friendly_abort (42); | |
3927 | ||
3928 | case METHOD_CALL_EXPR: | |
3929 | if (TREE_CODE (TREE_OPERAND (t, 0)) == SCOPE_REF) | |
3930 | { | |
3931 | tree ref = TREE_OPERAND (t, 0); | |
3932 | return build_scoped_method_call | |
3933 | (build_expr_from_tree (TREE_OPERAND (t, 1)), | |
3934 | build_expr_from_tree (TREE_OPERAND (ref, 0)), | |
3935 | TREE_OPERAND (ref, 1), | |
3936 | build_expr_from_tree (TREE_OPERAND (t, 2))); | |
3937 | } | |
d8f8dca1 MM |
3938 | else |
3939 | { | |
3940 | tree fn = TREE_OPERAND (t, 0); | |
074917ba | 3941 | |
d8f8dca1 MM |
3942 | /* We can get a TEMPLATE_ID_EXPR here on code like: |
3943 | ||
3944 | x->f<2>(); | |
3945 | ||
3946 | so we must resolve that. However, we can also get things | |
3947 | like a BIT_NOT_EXPR here, when referring to a destructor, | |
3948 | and things like that are not correctly resolved by | |
3949 | build_expr_from_tree. So, just use build_expr_from_tree | |
3950 | when we really need it. */ | |
3951 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
074917ba JM |
3952 | fn = lookup_template_function |
3953 | (TREE_OPERAND (fn, 0), | |
3954 | build_expr_from_tree (TREE_OPERAND (fn, 1))); | |
d8f8dca1 MM |
3955 | |
3956 | return build_method_call | |
3957 | (build_expr_from_tree (TREE_OPERAND (t, 1)), | |
3958 | fn, | |
3959 | build_expr_from_tree (TREE_OPERAND (t, 2)), | |
3960 | NULL_TREE, LOOKUP_NORMAL); | |
3961 | } | |
5566b478 MS |
3962 | |
3963 | case CALL_EXPR: | |
3964 | if (TREE_CODE (TREE_OPERAND (t, 0)) == SCOPE_REF) | |
3965 | { | |
3966 | tree ref = TREE_OPERAND (t, 0); | |
3967 | return build_member_call | |
3968 | (build_expr_from_tree (TREE_OPERAND (ref, 0)), | |
3969 | TREE_OPERAND (ref, 1), | |
3970 | build_expr_from_tree (TREE_OPERAND (t, 1))); | |
3971 | } | |
3972 | else | |
3973 | { | |
3974 | tree name = TREE_OPERAND (t, 0); | |
a759e627 ML |
3975 | tree id; |
3976 | tree args = build_expr_from_tree (TREE_OPERAND (t, 1)); | |
3977 | if (args != NULL_TREE && TREE_CODE (name) == LOOKUP_EXPR | |
3978 | && !LOOKUP_EXPR_GLOBAL (name) | |
3979 | && TREE_CODE ((id = TREE_OPERAND (name, 0))) == IDENTIFIER_NODE | |
3980 | && (!current_class_type | |
3981 | || !lookup_member (current_class_type, id, 0, 0))) | |
3982 | { | |
3983 | /* Do Koenig lookup if there are no class members. */ | |
3984 | name = do_identifier (id, 0, args); | |
3985 | } | |
3986 | else if (TREE_CODE (name) == TEMPLATE_ID_EXPR | |
00d3396f | 3987 | || ! really_overloaded_fn (name)) |
5566b478 | 3988 | name = build_expr_from_tree (name); |
a759e627 | 3989 | return build_x_function_call (name, args, current_class_ref); |
5566b478 MS |
3990 | } |
3991 | ||
3992 | case COND_EXPR: | |
3993 | return build_x_conditional_expr | |
3994 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
3995 | build_expr_from_tree (TREE_OPERAND (t, 1)), | |
3996 | build_expr_from_tree (TREE_OPERAND (t, 2))); | |
3997 | ||
40242ccf MM |
3998 | case PSEUDO_DTOR_EXPR: |
3999 | return (finish_pseudo_destructor_call_expr | |
4000 | (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
4001 | build_expr_from_tree (TREE_OPERAND (t, 1)), | |
4002 | build_expr_from_tree (TREE_OPERAND (t, 2)))); | |
4003 | ||
5566b478 MS |
4004 | case TREE_LIST: |
4005 | { | |
4006 | tree purpose, value, chain; | |
4007 | ||
4008 | if (t == void_list_node) | |
4009 | return t; | |
4010 | ||
4011 | purpose = TREE_PURPOSE (t); | |
4012 | if (purpose) | |
4013 | purpose = build_expr_from_tree (purpose); | |
4014 | value = TREE_VALUE (t); | |
4015 | if (value) | |
4016 | value = build_expr_from_tree (value); | |
4017 | chain = TREE_CHAIN (t); | |
4018 | if (chain && chain != void_type_node) | |
4019 | chain = build_expr_from_tree (chain); | |
e1b3e07d | 4020 | return tree_cons (purpose, value, chain); |
5566b478 MS |
4021 | } |
4022 | ||
4023 | case COMPONENT_REF: | |
74322f31 MM |
4024 | { |
4025 | tree object = build_expr_from_tree (TREE_OPERAND (t, 0)); | |
4026 | tree field = TREE_OPERAND (t, 1); | |
4027 | ||
4028 | /* We use a COMPONENT_REF to indicate things of the form `x.b' | |
4029 | and `x.A::b'. We must distinguish between those cases | |
4030 | here. */ | |
4031 | if (TREE_CODE (field) == SCOPE_REF) | |
4032 | return build_object_ref (object, | |
4033 | TREE_OPERAND (field, 0), | |
4034 | TREE_OPERAND (field, 1)); | |
4035 | else | |
4036 | return build_x_component_ref (object, field, | |
4037 | NULL_TREE, 1); | |
4038 | } | |
4039 | ||
fc378698 MS |
4040 | case THROW_EXPR: |
4041 | return build_throw (build_expr_from_tree (TREE_OPERAND (t, 0))); | |
4042 | ||
5156628f MS |
4043 | case CONSTRUCTOR: |
4044 | { | |
2fcdec57 JM |
4045 | tree r; |
4046 | ||
4047 | /* digest_init will do the wrong thing if we let it. */ | |
4048 | if (TREE_TYPE (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t))) | |
4049 | return t; | |
4050 | ||
4051 | r = build_nt (CONSTRUCTOR, NULL_TREE, | |
4052 | build_expr_from_tree (CONSTRUCTOR_ELTS (t))); | |
8452b1d3 | 4053 | TREE_HAS_CONSTRUCTOR (r) = TREE_HAS_CONSTRUCTOR (t); |
5156628f MS |
4054 | |
4055 | if (TREE_TYPE (t)) | |
4056 | return digest_init (TREE_TYPE (t), r, 0); | |
4057 | return r; | |
4058 | } | |
4059 | ||
4060 | case TYPEID_EXPR: | |
2f939d94 | 4061 | if (TYPE_P (TREE_OPERAND (t, 0))) |
e9f32eb5 | 4062 | return get_typeid (TREE_OPERAND (t, 0)); |
e5f614d7 | 4063 | return build_typeid (build_expr_from_tree (TREE_OPERAND (t, 0))); |
5156628f | 4064 | |
9a3b49ac MS |
4065 | case VAR_DECL: |
4066 | return convert_from_reference (t); | |
4067 | ||
371534a9 MM |
4068 | case VA_ARG_EXPR: |
4069 | return build_va_arg (build_expr_from_tree (TREE_OPERAND (t, 0)), | |
4070 | TREE_TYPE (t)); | |
4071 | ||
8926095f | 4072 | default: |
5566b478 | 4073 | return t; |
51c184be | 4074 | } |
51c184be MS |
4075 | } |
4076 | ||
4077 | /* This is something of the form `int (*a)++' that has turned out to be an | |
4078 | expr. It was only converted into parse nodes, so we need to go through | |
4079 | and build up the semantics. Most of the work is done by | |
5566b478 | 4080 | build_expr_from_tree, above. |
51c184be MS |
4081 | |
4082 | In the above example, TYPE is `int' and DECL is `*a'. */ | |
e92cc029 | 4083 | |
51c184be MS |
4084 | tree |
4085 | reparse_decl_as_expr (type, decl) | |
4086 | tree type, decl; | |
4087 | { | |
5566b478 | 4088 | decl = build_expr_from_tree (decl); |
e3417fcd | 4089 | if (type) |
051e6fd7 | 4090 | return build_functional_cast (type, build_tree_list (NULL_TREE, decl)); |
e3417fcd MS |
4091 | else |
4092 | return decl; | |
51c184be MS |
4093 | } |
4094 | ||
4095 | /* This is something of the form `int (*a)' that has turned out to be a | |
4096 | decl. It was only converted into parse nodes, so we need to do the | |
e92cc029 | 4097 | checking that make_{pointer,reference}_declarator do. */ |
51c184be MS |
4098 | |
4099 | tree | |
4100 | finish_decl_parsing (decl) | |
4101 | tree decl; | |
4102 | { | |
8926095f MS |
4103 | extern int current_class_depth; |
4104 | ||
51c184be MS |
4105 | switch (TREE_CODE (decl)) |
4106 | { | |
4107 | case IDENTIFIER_NODE: | |
4108 | return decl; | |
4109 | case INDIRECT_REF: | |
4110 | return make_pointer_declarator | |
4111 | (NULL_TREE, finish_decl_parsing (TREE_OPERAND (decl, 0))); | |
4112 | case ADDR_EXPR: | |
4113 | return make_reference_declarator | |
4114 | (NULL_TREE, finish_decl_parsing (TREE_OPERAND (decl, 0))); | |
4115 | case BIT_NOT_EXPR: | |
4116 | TREE_OPERAND (decl, 0) = finish_decl_parsing (TREE_OPERAND (decl, 0)); | |
4117 | return decl; | |
8926095f | 4118 | case SCOPE_REF: |
a4443a08 | 4119 | push_nested_class (TREE_TYPE (TREE_OPERAND (decl, 0)), 3); |
8926095f MS |
4120 | TREE_COMPLEXITY (decl) = current_class_depth; |
4121 | return decl; | |
a28e3c7f MS |
4122 | case ARRAY_REF: |
4123 | TREE_OPERAND (decl, 0) = finish_decl_parsing (TREE_OPERAND (decl, 0)); | |
4124 | return decl; | |
52fbc847 JM |
4125 | case TREE_LIST: |
4126 | /* For attribute handling. */ | |
4127 | TREE_VALUE (decl) = finish_decl_parsing (TREE_VALUE (decl)); | |
4128 | return decl; | |
8926095f MS |
4129 | default: |
4130 | my_friendly_abort (5); | |
4131 | return NULL_TREE; | |
51c184be MS |
4132 | } |
4133 | } | |
2986ae00 MS |
4134 | |
4135 | tree | |
4136 | check_cp_case_value (value) | |
4137 | tree value; | |
4138 | { | |
4139 | if (value == NULL_TREE) | |
4140 | return value; | |
4141 | ||
5566b478 MS |
4142 | /* Strip NON_LVALUE_EXPRs since we aren't using as an lvalue. */ |
4143 | STRIP_TYPE_NOPS (value); | |
fc611ce0 MM |
4144 | value = decl_constant_value (value); |
4145 | STRIP_TYPE_NOPS (value); | |
2986ae00 MS |
4146 | value = fold (value); |
4147 | ||
4148 | if (TREE_CODE (value) != INTEGER_CST | |
4149 | && value != error_mark_node) | |
4150 | { | |
8251199e | 4151 | cp_error ("case label `%E' does not reduce to an integer constant", |
2986ae00 MS |
4152 | value); |
4153 | value = error_mark_node; | |
4154 | } | |
4155 | else | |
4156 | /* Promote char or short to int. */ | |
4157 | value = default_conversion (value); | |
4158 | ||
4159 | constant_expression_warning (value); | |
4160 | ||
4161 | return value; | |
4162 | } | |
6060a796 | 4163 | |
2c73f9f5 ML |
4164 | /* Return 1 if root encloses child. */ |
4165 | ||
30394414 JM |
4166 | static int |
4167 | is_namespace_ancestor (root, child) | |
4168 | tree root, child; | |
4169 | { | |
4170 | if (root == child) | |
4171 | return 1; | |
4172 | if (root == global_namespace) | |
4173 | return 1; | |
4174 | if (child == global_namespace) | |
4175 | return 0; | |
cb0dbb9a | 4176 | return is_namespace_ancestor (root, CP_DECL_CONTEXT (child)); |
30394414 JM |
4177 | } |
4178 | ||
4179 | ||
2c73f9f5 ML |
4180 | /* Return the namespace that is the common ancestor |
4181 | of two given namespaces. */ | |
4182 | ||
9ed182dc | 4183 | tree |
30394414 JM |
4184 | namespace_ancestor (ns1, ns2) |
4185 | tree ns1, ns2; | |
4186 | { | |
4187 | if (is_namespace_ancestor (ns1, ns2)) | |
4188 | return ns1; | |
a41461c9 | 4189 | return namespace_ancestor (CP_DECL_CONTEXT (ns1), ns2); |
30394414 JM |
4190 | } |
4191 | ||
4192 | /* Insert used into the using list of user. Set indirect_flag if this | |
4193 | directive is not directly from the source. Also find the common | |
4194 | ancestor and let our users know about the new namespace */ | |
4195 | static void | |
4196 | add_using_namespace (user, used, indirect) | |
4197 | tree user; | |
4198 | tree used; | |
4199 | int indirect; | |
4200 | { | |
52c11ef6 | 4201 | tree t; |
2c73f9f5 | 4202 | /* Using oneself is a no-op. */ |
30394414 JM |
4203 | if (user == used) |
4204 | return; | |
4205 | my_friendly_assert (TREE_CODE (user) == NAMESPACE_DECL, 380); | |
4206 | my_friendly_assert (TREE_CODE (used) == NAMESPACE_DECL, 380); | |
2c73f9f5 | 4207 | /* Check if we already have this. */ |
52c11ef6 JM |
4208 | t = purpose_member (used, DECL_NAMESPACE_USING (user)); |
4209 | if (t != NULL_TREE) | |
4210 | { | |
4211 | if (!indirect) | |
4212 | /* Promote to direct usage. */ | |
4213 | TREE_INDIRECT_USING (t) = 0; | |
4214 | return; | |
4215 | } | |
30394414 | 4216 | |
2c73f9f5 | 4217 | /* Add used to the user's using list. */ |
30394414 | 4218 | DECL_NAMESPACE_USING (user) |
e1b3e07d MM |
4219 | = tree_cons (used, namespace_ancestor (user, used), |
4220 | DECL_NAMESPACE_USING (user)); | |
30394414 JM |
4221 | |
4222 | TREE_INDIRECT_USING (DECL_NAMESPACE_USING (user)) = indirect; | |
4223 | ||
2c73f9f5 | 4224 | /* Add user to the used's users list. */ |
30394414 | 4225 | DECL_NAMESPACE_USERS (used) |
e1b3e07d | 4226 | = tree_cons (user, 0, DECL_NAMESPACE_USERS (used)); |
85c6cbaf ML |
4227 | |
4228 | /* Recursively add all namespaces used. */ | |
52c11ef6 | 4229 | for (t = DECL_NAMESPACE_USING (used); t; t = TREE_CHAIN (t)) |
30394414 | 4230 | /* indirect usage */ |
52c11ef6 | 4231 | add_using_namespace (user, TREE_PURPOSE (t), 1); |
85c6cbaf ML |
4232 | |
4233 | /* Tell everyone using us about the new used namespaces. */ | |
52c11ef6 JM |
4234 | for (t = DECL_NAMESPACE_USERS (user); t; t = TREE_CHAIN (t)) |
4235 | add_using_namespace (TREE_PURPOSE (t), used, 1); | |
30394414 JM |
4236 | } |
4237 | ||
5eea678f JM |
4238 | /* Combines two sets of overloaded functions into an OVERLOAD chain, removing |
4239 | duplicates. The first list becomes the tail of the result. | |
4240 | ||
61a127b3 MM |
4241 | The algorithm is O(n^2). We could get this down to O(n log n) by |
4242 | doing a sort on the addresses of the functions, if that becomes | |
4243 | necessary. */ | |
2c73f9f5 ML |
4244 | |
4245 | static tree | |
4246 | merge_functions (s1, s2) | |
4247 | tree s1; | |
4248 | tree s2; | |
4249 | { | |
5eea678f JM |
4250 | for (; s2; s2 = OVL_NEXT (s2)) |
4251 | { | |
4252 | tree fn = OVL_CURRENT (s2); | |
4253 | if (! ovl_member (fn, s1)) | |
4254 | s1 = build_overload (fn, s1); | |
4255 | } | |
2c73f9f5 ML |
4256 | return s1; |
4257 | } | |
4258 | ||
30394414 JM |
4259 | /* This should return an error not all definitions define functions. |
4260 | It is not an error if we find two functions with exactly the | |
4261 | same signature, only if these are selected in overload resolution. | |
2c73f9f5 | 4262 | old is the current set of bindings, new the freshly-found binding. |
30394414 JM |
4263 | XXX Do we want to give *all* candidates in case of ambiguity? |
4264 | XXX In what way should I treat extern declarations? | |
4265 | XXX I don't want to repeat the entire duplicate_decls here */ | |
2c73f9f5 | 4266 | |
30394414 | 4267 | static tree |
52c11ef6 | 4268 | ambiguous_decl (name, old, new, flags) |
2c73f9f5 ML |
4269 | tree name; |
4270 | tree old; | |
4271 | tree new; | |
52c11ef6 | 4272 | int flags; |
30394414 | 4273 | { |
52c11ef6 | 4274 | tree val, type; |
2c73f9f5 ML |
4275 | my_friendly_assert (old != NULL_TREE, 393); |
4276 | /* Copy the value. */ | |
52c11ef6 JM |
4277 | val = BINDING_VALUE (new); |
4278 | if (val) | |
4279 | switch (TREE_CODE (val)) | |
4280 | { | |
4281 | case TEMPLATE_DECL: | |
4282 | /* If we expect types or namespaces, and not templates, | |
4283 | or this is not a template class. */ | |
4284 | if (LOOKUP_QUALIFIERS_ONLY (flags) | |
c592d5d2 | 4285 | && !DECL_CLASS_TEMPLATE_P (val)) |
52c11ef6 JM |
4286 | val = NULL_TREE; |
4287 | break; | |
4288 | case TYPE_DECL: | |
4289 | if (LOOKUP_NAMESPACES_ONLY (flags)) | |
4290 | val = NULL_TREE; | |
4291 | break; | |
4292 | case NAMESPACE_DECL: | |
4293 | if (LOOKUP_TYPES_ONLY (flags)) | |
4294 | val = NULL_TREE; | |
4295 | break; | |
4296 | default: | |
4297 | if (LOOKUP_QUALIFIERS_ONLY (flags)) | |
4298 | val = NULL_TREE; | |
4299 | } | |
4300 | ||
2c73f9f5 | 4301 | if (!BINDING_VALUE (old)) |
52c11ef6 JM |
4302 | BINDING_VALUE (old) = val; |
4303 | else if (val && val != BINDING_VALUE (old)) | |
2c73f9f5 ML |
4304 | { |
4305 | if (is_overloaded_fn (BINDING_VALUE (old)) | |
52c11ef6 | 4306 | && is_overloaded_fn (val)) |
2c73f9f5 ML |
4307 | { |
4308 | BINDING_VALUE (old) = merge_functions (BINDING_VALUE (old), | |
52c11ef6 | 4309 | val); |
2c73f9f5 ML |
4310 | } |
4311 | else | |
4312 | { | |
4313 | /* Some declarations are functions, some are not. */ | |
52c11ef6 JM |
4314 | if (flags & LOOKUP_COMPLAIN) |
4315 | { | |
2642b9bf JM |
4316 | /* If we've already given this error for this lookup, |
4317 | BINDING_VALUE (old) is error_mark_node, so let's not | |
4318 | repeat ourselves. */ | |
4319 | if (BINDING_VALUE (old) != error_mark_node) | |
4320 | { | |
4321 | cp_error ("use of `%D' is ambiguous", name); | |
4322 | cp_error_at (" first declared as `%#D' here", | |
4323 | BINDING_VALUE (old)); | |
4324 | } | |
8251199e | 4325 | cp_error_at (" also declared as `%#D' here", val); |
52c11ef6 | 4326 | } |
d67cdbc3 | 4327 | BINDING_VALUE (old) = error_mark_node; |
2c73f9f5 ML |
4328 | } |
4329 | } | |
4330 | /* ... and copy the type. */ | |
52c11ef6 JM |
4331 | type = BINDING_TYPE (new); |
4332 | if (LOOKUP_NAMESPACES_ONLY (flags)) | |
4333 | type = NULL_TREE; | |
2c73f9f5 | 4334 | if (!BINDING_TYPE (old)) |
52c11ef6 | 4335 | BINDING_TYPE (old) = type; |
1c35f5b6 | 4336 | else if (type && BINDING_TYPE (old) != type) |
30394414 | 4337 | { |
52c11ef6 JM |
4338 | if (flags & LOOKUP_COMPLAIN) |
4339 | { | |
8251199e JM |
4340 | cp_error ("`%D' denotes an ambiguous type",name); |
4341 | cp_error_at (" first type here", BINDING_TYPE (old)); | |
4342 | cp_error_at (" other type here", type); | |
52c11ef6 | 4343 | } |
30394414 | 4344 | } |
2c73f9f5 | 4345 | return old; |
30394414 JM |
4346 | } |
4347 | ||
2c169bab JM |
4348 | /* Subroutine of unualified_namespace_lookup: |
4349 | Add the bindings of NAME in used namespaces to VAL. | |
4350 | We are currently looking for names in namespace SCOPE, so we | |
4351 | look through USINGS for using-directives of namespaces | |
4352 | which have SCOPE as a common ancestor with the current scope. | |
2c73f9f5 ML |
4353 | Returns zero on errors. */ |
4354 | ||
4355 | int | |
2c169bab | 4356 | lookup_using_namespace (name, val, usings, scope, flags, spacesp) |
ea9635c7 | 4357 | tree name, val, usings, scope; |
52c11ef6 | 4358 | int flags; |
2c169bab | 4359 | tree *spacesp; |
30394414 JM |
4360 | { |
4361 | tree iter; | |
4362 | tree val1; | |
ea9635c7 ML |
4363 | /* Iterate over all used namespaces in current, searching for using |
4364 | directives of scope. */ | |
4365 | for (iter = usings; iter; iter = TREE_CHAIN (iter)) | |
4366 | if (TREE_VALUE (iter) == scope) | |
4367 | { | |
2c169bab | 4368 | if (spacesp) |
e1b3e07d MM |
4369 | *spacesp = tree_cons (TREE_PURPOSE (iter), NULL_TREE, |
4370 | *spacesp); | |
ea9635c7 ML |
4371 | val1 = binding_for_name (name, TREE_PURPOSE (iter)); |
4372 | /* Resolve ambiguities. */ | |
52c11ef6 | 4373 | val = ambiguous_decl (name, val, val1, flags); |
ea9635c7 | 4374 | } |
d67cdbc3 | 4375 | return BINDING_VALUE (val) != error_mark_node; |
30394414 JM |
4376 | } |
4377 | ||
2c73f9f5 | 4378 | /* [namespace.qual] |
6ad07332 JM |
4379 | Accepts the NAME to lookup and its qualifying SCOPE. |
4380 | Returns the name/type pair found into the CPLUS_BINDING RESULT, | |
2c73f9f5 ML |
4381 | or 0 on error. */ |
4382 | ||
4383 | int | |
52c11ef6 | 4384 | qualified_lookup_using_namespace (name, scope, result, flags) |
30394414 JM |
4385 | tree name; |
4386 | tree scope; | |
2c73f9f5 | 4387 | tree result; |
52c11ef6 | 4388 | int flags; |
30394414 | 4389 | { |
2c73f9f5 | 4390 | /* Maintain a list of namespaces visited... */ |
30394414 | 4391 | tree seen = NULL_TREE; |
2c73f9f5 | 4392 | /* ... and a list of namespace yet to see. */ |
30394414 JM |
4393 | tree todo = NULL_TREE; |
4394 | tree usings; | |
2c73f9f5 | 4395 | while (scope && (result != error_mark_node)) |
30394414 | 4396 | { |
58010b57 | 4397 | seen = tree_cons (scope, NULL_TREE, seen); |
52c11ef6 JM |
4398 | result = ambiguous_decl (name, result, |
4399 | binding_for_name (name, scope), flags); | |
2c73f9f5 ML |
4400 | if (!BINDING_VALUE (result) && !BINDING_TYPE (result)) |
4401 | /* Consider using directives. */ | |
30394414 JM |
4402 | for (usings = DECL_NAMESPACE_USING (scope); usings; |
4403 | usings = TREE_CHAIN (usings)) | |
2c73f9f5 | 4404 | /* If this was a real directive, and we have not seen it. */ |
30394414 | 4405 | if (!TREE_INDIRECT_USING (usings) |
2b9dc906 | 4406 | && !purpose_member (TREE_PURPOSE (usings), seen)) |
58010b57 | 4407 | todo = tree_cons (TREE_PURPOSE (usings), NULL_TREE, todo); |
30394414 JM |
4408 | if (todo) |
4409 | { | |
4410 | scope = TREE_PURPOSE (todo); | |
4411 | todo = TREE_CHAIN (todo); | |
4412 | } | |
4413 | else | |
2c73f9f5 | 4414 | scope = NULL_TREE; /* If there never was a todo list. */ |
30394414 | 4415 | } |
2c73f9f5 | 4416 | return result != error_mark_node; |
30394414 | 4417 | } |
6060a796 | 4418 | |
2c73f9f5 ML |
4419 | /* [namespace.memdef]/2 */ |
4420 | ||
4421 | /* Set the context of a declaration to scope. Complain if we are not | |
4422 | outside scope. */ | |
4423 | ||
4424 | void | |
b262d64c | 4425 | set_decl_namespace (decl, scope, friendp) |
2c73f9f5 ML |
4426 | tree decl; |
4427 | tree scope; | |
b262d64c | 4428 | int friendp; |
2c73f9f5 ML |
4429 | { |
4430 | tree old; | |
4431 | if (scope == std_node) | |
4432 | scope = global_namespace; | |
3e3f722c ML |
4433 | /* Get rid of namespace aliases. */ |
4434 | scope = ORIGINAL_NAMESPACE (scope); | |
4435 | ||
b262d64c JM |
4436 | /* It is ok for friends to be qualified in parallel space. */ |
4437 | if (!friendp && !is_namespace_ancestor (current_namespace, scope)) | |
8251199e | 4438 | cp_error ("declaration of `%D' not in a namespace surrounding `%D'", |
2c73f9f5 | 4439 | decl, scope); |
cb0dbb9a | 4440 | DECL_CONTEXT (decl) = FROB_CONTEXT (scope); |
2c73f9f5 ML |
4441 | if (scope != current_namespace) |
4442 | { | |
4443 | /* See whether this has been declared in the namespace. */ | |
4444 | old = namespace_binding (DECL_NAME (decl), scope); | |
4445 | if (!old) | |
4446 | /* No old declaration at all. */ | |
4447 | goto complain; | |
4448 | if (!is_overloaded_fn (decl)) | |
4449 | /* Don't compare non-function decls with decls_match here, | |
4450 | since it can't check for the correct constness at this | |
4451 | point. pushdecl will find those errors later. */ | |
4452 | return; | |
4453 | /* Since decl is a function, old should contain a function decl. */ | |
4454 | if (!is_overloaded_fn (old)) | |
4455 | goto complain; | |
d82d65d8 ML |
4456 | if (processing_template_decl || processing_specialization) |
4457 | /* We have not yet called push_template_decl to turn the | |
4458 | FUNCTION_DECL into a TEMPLATE_DECL, so the declarations | |
4459 | won't match. But, we'll check later, when we construct the | |
4460 | template. */ | |
4461 | return; | |
2c73f9f5 ML |
4462 | for (; old; old = OVL_NEXT (old)) |
4463 | if (decls_match (decl, OVL_CURRENT (old))) | |
4464 | return; | |
4465 | } | |
4466 | else | |
4467 | return; | |
4468 | complain: | |
8251199e | 4469 | cp_error ("`%D' should have been declared inside `%D'", |
2c73f9f5 ML |
4470 | decl, scope); |
4471 | } | |
4472 | ||
4473 | /* Compute the namespace where a declaration is defined. */ | |
e92cc029 | 4474 | |
d8e178a0 | 4475 | static tree |
2c73f9f5 ML |
4476 | decl_namespace (decl) |
4477 | tree decl; | |
6060a796 | 4478 | { |
2bdb0643 JM |
4479 | if (TYPE_P (decl)) |
4480 | decl = TYPE_STUB_DECL (decl); | |
2c73f9f5 ML |
4481 | while (DECL_CONTEXT (decl)) |
4482 | { | |
4483 | decl = DECL_CONTEXT (decl); | |
4484 | if (TREE_CODE (decl) == NAMESPACE_DECL) | |
4485 | return decl; | |
2f939d94 | 4486 | if (TYPE_P (decl)) |
2c73f9f5 | 4487 | decl = TYPE_STUB_DECL (decl); |
2f939d94 | 4488 | my_friendly_assert (DECL_P (decl), 390); |
2c73f9f5 ML |
4489 | } |
4490 | ||
cb0dbb9a | 4491 | return global_namespace; |
6060a796 MS |
4492 | } |
4493 | ||
2c73f9f5 | 4494 | /* Return the namespace where the current declaration is declared. */ |
e92cc029 | 4495 | |
6060a796 | 4496 | tree |
2c73f9f5 | 4497 | current_decl_namespace () |
6060a796 | 4498 | { |
2c73f9f5 ML |
4499 | tree result; |
4500 | /* If we have been pushed into a different namespace, use it. */ | |
4501 | if (decl_namespace_list) | |
4502 | return TREE_PURPOSE (decl_namespace_list); | |
4503 | ||
4504 | if (current_class_type) | |
c3baf4b5 | 4505 | result = decl_namespace (TYPE_STUB_DECL (current_class_type)); |
2c73f9f5 | 4506 | else if (current_function_decl) |
c3baf4b5 | 4507 | result = decl_namespace (current_function_decl); |
2c73f9f5 ML |
4508 | else |
4509 | result = current_namespace; | |
4510 | return result; | |
4511 | } | |
6060a796 | 4512 | |
2c73f9f5 | 4513 | /* Temporarily set the namespace for the current declaration. */ |
6060a796 | 4514 | |
2c73f9f5 ML |
4515 | void |
4516 | push_decl_namespace (decl) | |
4517 | tree decl; | |
4518 | { | |
4519 | if (TREE_CODE (decl) != NAMESPACE_DECL) | |
4520 | decl = decl_namespace (decl); | |
4521 | decl_namespace_list = tree_cons (decl, NULL_TREE, decl_namespace_list); | |
4522 | } | |
4523 | ||
4524 | void | |
4525 | pop_decl_namespace () | |
4526 | { | |
4527 | decl_namespace_list = TREE_CHAIN (decl_namespace_list); | |
4528 | } | |
4529 | ||
f09bbbed ML |
4530 | /* Enter a class or namespace scope. */ |
4531 | ||
4532 | void | |
4533 | push_scope (t) | |
4534 | tree t; | |
4535 | { | |
4536 | if (TREE_CODE (t) == NAMESPACE_DECL) | |
4537 | push_decl_namespace (t); | |
4538 | else | |
4539 | pushclass (t, 2); | |
4540 | } | |
4541 | ||
4542 | /* Leave scope pushed by push_scope. */ | |
4543 | ||
4544 | void | |
4545 | pop_scope (t) | |
4546 | tree t; | |
4547 | { | |
4548 | if (TREE_CODE (t) == NAMESPACE_DECL) | |
4549 | pop_decl_namespace (); | |
4550 | else | |
b74a0560 | 4551 | popclass (); |
f09bbbed ML |
4552 | } |
4553 | ||
2c73f9f5 ML |
4554 | /* [basic.lookup.koenig] */ |
4555 | /* A non-zero return value in the functions below indicates an error. | |
4556 | All nodes allocated in the procedure are on the scratch obstack. */ | |
4557 | ||
4558 | struct arg_lookup | |
4559 | { | |
4560 | tree name; | |
4561 | tree namespaces; | |
4562 | tree classes; | |
4563 | tree functions; | |
4564 | }; | |
4565 | ||
158991b7 KG |
4566 | static int arg_assoc PARAMS ((struct arg_lookup*, tree)); |
4567 | static int arg_assoc_args PARAMS ((struct arg_lookup*, tree)); | |
4568 | static int arg_assoc_type PARAMS ((struct arg_lookup*, tree)); | |
4569 | static int add_function PARAMS ((struct arg_lookup *, tree)); | |
4570 | static int arg_assoc_namespace PARAMS ((struct arg_lookup *, tree)); | |
4571 | static int arg_assoc_class PARAMS ((struct arg_lookup *, tree)); | |
4572 | static int arg_assoc_template_arg PARAMS ((struct arg_lookup*, tree)); | |
2c73f9f5 | 4573 | |
2d390867 JM |
4574 | /* Add a function to the lookup structure. |
4575 | Returns 1 on error. */ | |
2c73f9f5 ML |
4576 | |
4577 | static int | |
4578 | add_function (k, fn) | |
4579 | struct arg_lookup *k; | |
4580 | tree fn; | |
4581 | { | |
2c169bab JM |
4582 | /* We used to check here to see if the function was already in the list, |
4583 | but that's O(n^2), which is just too expensive for function lookup. | |
4584 | Now we deal with the occasional duplicate in joust. In doing this, we | |
4585 | assume that the number of duplicates will be small compared to the | |
4586 | total number of functions being compared, which should usually be the | |
4587 | case. */ | |
4588 | ||
5f8ac7d1 ML |
4589 | /* We must find only functions, or exactly one non-function. */ |
4590 | if (k->functions && is_overloaded_fn (k->functions) | |
4591 | && is_overloaded_fn (fn)) | |
4592 | k->functions = build_overload (fn, k->functions); | |
2c169bab JM |
4593 | else if (k->functions) |
4594 | { | |
4595 | tree f1 = OVL_CURRENT (k->functions); | |
4596 | tree f2 = fn; | |
4597 | if (is_overloaded_fn (f1)) | |
4598 | { | |
4599 | fn = f1; f1 = f2; f2 = fn; | |
4600 | } | |
4601 | cp_error_at ("`%D' is not a function,", f1); | |
4602 | cp_error_at (" conflict with `%D'", f2); | |
4603 | cp_error (" in call to `%D'", k->name); | |
4604 | return 1; | |
4605 | } | |
4606 | else | |
4607 | k->functions = fn; | |
2c73f9f5 ML |
4608 | return 0; |
4609 | } | |
4610 | ||
2d390867 JM |
4611 | /* Add functions of a namespace to the lookup structure. |
4612 | Returns 1 on error. */ | |
2c73f9f5 ML |
4613 | |
4614 | static int | |
4615 | arg_assoc_namespace (k, scope) | |
4616 | struct arg_lookup *k; | |
4617 | tree scope; | |
4618 | { | |
4619 | tree value; | |
4620 | ||
4621 | if (purpose_member (scope, k->namespaces)) | |
4622 | return 0; | |
4623 | k->namespaces = tree_cons (scope, NULL_TREE, k->namespaces); | |
4624 | ||
4625 | value = namespace_binding (k->name, scope); | |
4626 | if (!value) | |
4627 | return 0; | |
2c169bab | 4628 | |
2c73f9f5 ML |
4629 | for (; value; value = OVL_NEXT (value)) |
4630 | if (add_function (k, OVL_CURRENT (value))) | |
4631 | return 1; | |
4632 | ||
4633 | return 0; | |
6060a796 | 4634 | } |
2c73f9f5 | 4635 | |
ec4f972f AS |
4636 | /* Adds everything associated with a template argument to the lookup |
4637 | structure. Returns 1 on error. */ | |
4638 | ||
4639 | static int | |
4640 | arg_assoc_template_arg (k, arg) | |
4641 | struct arg_lookup* k; | |
4642 | tree arg; | |
4643 | { | |
4644 | /* [basic.lookup.koenig] | |
4645 | ||
4646 | If T is a template-id, its associated namespaces and classes are | |
4647 | ... the namespaces and classes associated with the types of the | |
4648 | template arguments provided for template type parameters | |
4649 | (excluding template template parameters); the namespaces in which | |
4650 | any template template arguments are defined; and the classes in | |
4651 | which any member templates used as template template arguments | |
4652 | are defined. [Note: non-type template arguments do not | |
4653 | contribute to the set of associated namespaces. ] */ | |
4654 | ||
4655 | /* Consider first template template arguments. */ | |
4656 | if (TREE_CODE (arg) == TEMPLATE_DECL) | |
4657 | { | |
4658 | tree ctx = CP_DECL_CONTEXT (arg); | |
4659 | ||
4660 | /* It's not a member template. */ | |
4661 | if (TREE_CODE (ctx) == NAMESPACE_DECL) | |
4662 | return arg_assoc_namespace (k, ctx); | |
4663 | /* Otherwise, it must be member template. */ | |
4664 | else | |
4665 | return arg_assoc_class (k, ctx); | |
4666 | } | |
4667 | /* It's not a template template argument, but it is a type template | |
4668 | argument. */ | |
2f939d94 | 4669 | else if (TYPE_P (arg)) |
ec4f972f AS |
4670 | return arg_assoc_type (k, arg); |
4671 | /* It's a non-type template argument. */ | |
4672 | else | |
4673 | return 0; | |
4674 | } | |
4675 | ||
2d390867 JM |
4676 | /* Adds everything associated with class to the lookup structure. |
4677 | Returns 1 on error. */ | |
2c73f9f5 ML |
4678 | |
4679 | static int | |
4680 | arg_assoc_class (k, type) | |
4681 | struct arg_lookup* k; | |
4682 | tree type; | |
4683 | { | |
4684 | tree list, friends, context; | |
4685 | int i; | |
4686 | ||
31aa49b7 RH |
4687 | /* Backend build structures, such as __builtin_va_list, aren't |
4688 | affected by all this. */ | |
4689 | if (!CLASS_TYPE_P (type)) | |
4690 | return 0; | |
4691 | ||
2c73f9f5 ML |
4692 | if (purpose_member (type, k->classes)) |
4693 | return 0; | |
4694 | k->classes = tree_cons (type, NULL_TREE, k->classes); | |
4695 | ||
4696 | context = decl_namespace (TYPE_MAIN_DECL (type)); | |
4697 | if (arg_assoc_namespace (k, context)) | |
4698 | return 1; | |
4699 | ||
4700 | /* Process baseclasses. */ | |
4701 | for (i = 0; i < CLASSTYPE_N_BASECLASSES (type); i++) | |
4702 | if (arg_assoc_class (k, TYPE_BINFO_BASETYPE (type, i))) | |
4703 | return 1; | |
4704 | ||
4705 | /* Process friends. */ | |
4706 | for (list = DECL_FRIENDLIST (TYPE_MAIN_DECL (type)); list; | |
4707 | list = TREE_CHAIN (list)) | |
4708 | if (k->name == TREE_PURPOSE (list)) | |
4709 | for (friends = TREE_VALUE (list); friends; | |
4710 | friends = TREE_CHAIN (friends)) | |
4711 | /* Only interested in global functions with potentially hidden | |
4712 | (i.e. unqualified) declarations. */ | |
4713 | if (TREE_PURPOSE (list) == error_mark_node && TREE_VALUE (list) | |
4714 | && decl_namespace (TREE_VALUE (list)) == context) | |
4715 | if (add_function (k, TREE_VALUE (list))) | |
4716 | return 1; | |
00dc6358 JM |
4717 | |
4718 | /* Process template arguments. */ | |
4719 | if (CLASSTYPE_TEMPLATE_INFO (type)) | |
4720 | { | |
36a117a5 | 4721 | list = innermost_args (CLASSTYPE_TI_ARGS (type)); |
ec4f972f AS |
4722 | for (i = 0; i < TREE_VEC_LENGTH (list); ++i) |
4723 | arg_assoc_template_arg (k, TREE_VEC_ELT (list, i)); | |
00dc6358 JM |
4724 | } |
4725 | ||
2c73f9f5 ML |
4726 | return 0; |
4727 | } | |
4728 | ||
2d390867 JM |
4729 | /* Adds everything associated with a given type. |
4730 | Returns 1 on error. */ | |
2c73f9f5 ML |
4731 | |
4732 | static int | |
4733 | arg_assoc_type (k, type) | |
4734 | struct arg_lookup *k; | |
4735 | tree type; | |
4736 | { | |
4737 | switch (TREE_CODE (type)) | |
4738 | { | |
4739 | case VOID_TYPE: | |
4740 | case INTEGER_TYPE: | |
4741 | case REAL_TYPE: | |
4742 | case COMPLEX_TYPE: | |
4743 | case CHAR_TYPE: | |
4744 | case BOOLEAN_TYPE: | |
4745 | return 0; | |
4746 | case RECORD_TYPE: | |
4747 | if (TYPE_PTRMEMFUNC_P (type)) | |
4748 | return arg_assoc_type (k, TYPE_PTRMEMFUNC_FN_TYPE (type)); | |
4749 | return arg_assoc_class (k, type); | |
4750 | case POINTER_TYPE: | |
4751 | case REFERENCE_TYPE: | |
4752 | case ARRAY_TYPE: | |
4753 | return arg_assoc_type (k, TREE_TYPE (type)); | |
4754 | case UNION_TYPE: | |
4755 | case ENUMERAL_TYPE: | |
4756 | return arg_assoc_namespace (k, decl_namespace (TYPE_MAIN_DECL (type))); | |
1813dd7b ML |
4757 | case OFFSET_TYPE: |
4758 | /* Pointer to member: associate class type and value type. */ | |
4759 | if (arg_assoc_type (k, TYPE_OFFSET_BASETYPE (type))) | |
4760 | return 1; | |
4761 | return arg_assoc_type (k, TREE_TYPE (type)); | |
2c73f9f5 | 4762 | case METHOD_TYPE: |
2d390867 JM |
4763 | /* The basetype is referenced in the first arg type, so just |
4764 | fall through. */ | |
2c73f9f5 ML |
4765 | case FUNCTION_TYPE: |
4766 | /* Associate the parameter types. */ | |
4767 | if (arg_assoc_args (k, TYPE_ARG_TYPES (type))) | |
4768 | return 1; | |
4769 | /* Associate the return type. */ | |
4770 | return arg_assoc_type (k, TREE_TYPE (type)); | |
2d390867 | 4771 | case TEMPLATE_TYPE_PARM: |
700466c2 | 4772 | case TEMPLATE_TEMPLATE_PARM: |
2d390867 | 4773 | return 0; |
1813dd7b ML |
4774 | case LANG_TYPE: |
4775 | if (type == unknown_type_node) | |
4776 | return 0; | |
4777 | /* else fall through */ | |
2c73f9f5 ML |
4778 | default: |
4779 | my_friendly_abort (390); | |
4780 | } | |
4781 | return 0; | |
4782 | } | |
4783 | ||
2d390867 | 4784 | /* Adds everything associated with arguments. Returns 1 on error. */ |
2c73f9f5 ML |
4785 | |
4786 | static int | |
4787 | arg_assoc_args (k, args) | |
4788 | struct arg_lookup* k; | |
4789 | tree args; | |
4790 | { | |
4791 | for (; args; args = TREE_CHAIN (args)) | |
4792 | if (arg_assoc (k, TREE_VALUE (args))) | |
4793 | return 1; | |
4794 | return 0; | |
4795 | } | |
4796 | ||
2d390867 | 4797 | /* Adds everything associated with a given tree_node. Returns 1 on error. */ |
2c73f9f5 ML |
4798 | |
4799 | static int | |
4800 | arg_assoc (k, n) | |
4801 | struct arg_lookup* k; | |
4802 | tree n; | |
4803 | { | |
00dc6358 JM |
4804 | if (n == error_mark_node) |
4805 | return 0; | |
4806 | ||
2f939d94 | 4807 | if (TYPE_P (n)) |
2d390867 JM |
4808 | return arg_assoc_type (k, n); |
4809 | ||
4810 | if (! type_unknown_p (n)) | |
4811 | return arg_assoc_type (k, TREE_TYPE (n)); | |
4812 | ||
4813 | if (TREE_CODE (n) == ADDR_EXPR) | |
4814 | n = TREE_OPERAND (n, 0); | |
51924768 JM |
4815 | if (TREE_CODE (n) == COMPONENT_REF) |
4816 | n = TREE_OPERAND (n, 1); | |
05e0b2f4 JM |
4817 | if (TREE_CODE (n) == OFFSET_REF) |
4818 | n = TREE_OPERAND (n, 1); | |
00dc6358 | 4819 | while (TREE_CODE (n) == TREE_LIST) |
2d390867 JM |
4820 | n = TREE_VALUE (n); |
4821 | ||
51924768 JM |
4822 | if (TREE_CODE (n) == FUNCTION_DECL) |
4823 | return arg_assoc_type (k, TREE_TYPE (n)); | |
0c8bfdbc MM |
4824 | if (TREE_CODE (n) == TEMPLATE_ID_EXPR) |
4825 | { | |
4826 | /* [basic.lookup.koenig] | |
4827 | ||
4828 | If T is a template-id, its associated namespaces and classes | |
4829 | are the namespace in which the template is defined; for | |
ec4f972f | 4830 | member templates, the member template's class... */ |
0c8bfdbc MM |
4831 | tree template = TREE_OPERAND (n, 0); |
4832 | tree args = TREE_OPERAND (n, 1); | |
4833 | tree ctx; | |
4834 | tree arg; | |
4835 | ||
4836 | /* First, the template. There may actually be more than one if | |
4837 | this is an overloaded function template. But, in that case, | |
4838 | we only need the first; all the functions will be in the same | |
4839 | namespace. */ | |
4840 | template = OVL_CURRENT (template); | |
4841 | ||
4842 | ctx = CP_DECL_CONTEXT (template); | |
4843 | ||
4844 | if (TREE_CODE (ctx) == NAMESPACE_DECL) | |
4845 | { | |
4846 | if (arg_assoc_namespace (k, ctx) == 1) | |
4847 | return 1; | |
4848 | } | |
4849 | /* It must be a member template. */ | |
4850 | else if (arg_assoc_class (k, ctx) == 1) | |
4851 | return 1; | |
2d390867 | 4852 | |
0c8bfdbc MM |
4853 | /* Now the arguments. */ |
4854 | for (arg = args; arg != NULL_TREE; arg = TREE_CHAIN (arg)) | |
ec4f972f AS |
4855 | if (arg_assoc_template_arg (k, TREE_VALUE (arg)) == 1) |
4856 | return 1; | |
0c8bfdbc MM |
4857 | } |
4858 | else | |
4859 | { | |
4860 | my_friendly_assert (TREE_CODE (n) == OVERLOAD, 980715); | |
4861 | ||
4862 | for (; n; n = OVL_CHAIN (n)) | |
51924768 | 4863 | if (arg_assoc_type (k, TREE_TYPE (OVL_FUNCTION (n)))) |
0c8bfdbc MM |
4864 | return 1; |
4865 | } | |
2c73f9f5 | 4866 | |
2c73f9f5 ML |
4867 | return 0; |
4868 | } | |
4869 | ||
4870 | /* Performs Koenig lookup depending on arguments, where fns | |
4871 | are the functions found in normal lookup. */ | |
4872 | ||
4873 | tree | |
4874 | lookup_arg_dependent (name, fns, args) | |
4875 | tree name; | |
4876 | tree fns; | |
4877 | tree args; | |
4878 | { | |
4879 | struct arg_lookup k; | |
f0b9bc6c | 4880 | tree fn = NULL_TREE; |
2c169bab | 4881 | |
2c73f9f5 ML |
4882 | k.name = name; |
4883 | k.functions = fns; | |
2c73f9f5 | 4884 | k.classes = NULL_TREE; |
2c169bab JM |
4885 | |
4886 | /* Note that we've already looked at some namespaces during normal | |
4887 | unqualified lookup, unless we found a decl in function scope. */ | |
f0b9bc6c NS |
4888 | if (fns) |
4889 | fn = OVL_CURRENT (fns); | |
4890 | if (fn && TREE_CODE (fn) == FUNCTION_DECL && DECL_LOCAL_FUNCTION_P (fn)) | |
2c169bab JM |
4891 | k.namespaces = NULL_TREE; |
4892 | else | |
4893 | unqualified_namespace_lookup (name, 0, &k.namespaces); | |
4894 | ||
2c73f9f5 | 4895 | arg_assoc_args (&k, args); |
2c73f9f5 ML |
4896 | return k.functions; |
4897 | } | |
4898 | ||
4899 | /* Process a namespace-alias declaration. */ | |
6060a796 | 4900 | |
6060a796 | 4901 | void |
a9aedbc2 MS |
4902 | do_namespace_alias (alias, namespace) |
4903 | tree alias, namespace; | |
6060a796 | 4904 | { |
3e3f722c | 4905 | if (TREE_CODE (namespace) != NAMESPACE_DECL) |
30394414 | 4906 | { |
3e3f722c | 4907 | /* The parser did not find it, so it's not there. */ |
8251199e | 4908 | cp_error ("unknown namespace `%D'", namespace); |
30394414 JM |
4909 | return; |
4910 | } | |
3e3f722c ML |
4911 | |
4912 | namespace = ORIGINAL_NAMESPACE (namespace); | |
4913 | ||
85c6cbaf ML |
4914 | /* Build the alias. */ |
4915 | alias = build_lang_decl (NAMESPACE_DECL, alias, void_type_node); | |
4916 | DECL_NAMESPACE_ALIAS (alias) = namespace; | |
4917 | pushdecl (alias); | |
6060a796 MS |
4918 | } |
4919 | ||
ea9635c7 ML |
4920 | /* Check a non-member using-declaration. Return the name and scope |
4921 | being used, and the USING_DECL, or NULL_TREE on failure. */ | |
2c73f9f5 | 4922 | |
ea9635c7 ML |
4923 | static tree |
4924 | validate_nonmember_using_decl (decl, scope, name) | |
a9aedbc2 | 4925 | tree decl; |
ea9635c7 ML |
4926 | tree *scope; |
4927 | tree *name; | |
6060a796 | 4928 | { |
6633d636 MS |
4929 | if (TREE_CODE (decl) == SCOPE_REF |
4930 | && TREE_OPERAND (decl, 0) == std_node) | |
39ee4d93 | 4931 | { |
7bdbfa05 MM |
4932 | if (namespace_bindings_p () |
4933 | && current_namespace == global_namespace) | |
4934 | /* There's no need for a using declaration at all, here, | |
4935 | since `std' is the same as `::'. We can't just pass this | |
4936 | on because we'll complain later about declaring something | |
4937 | in the same scope as a using declaration with the same | |
4938 | name. We return NULL_TREE which indicates to the caller | |
4939 | that there's no need to do any further processing. */ | |
4940 | return NULL_TREE; | |
4941 | ||
39ee4d93 ML |
4942 | *scope = global_namespace; |
4943 | *name = TREE_OPERAND (decl, 1); | |
4944 | } | |
4945 | else if (TREE_CODE (decl) == SCOPE_REF) | |
2c73f9f5 | 4946 | { |
ea9635c7 ML |
4947 | *scope = TREE_OPERAND (decl, 0); |
4948 | *name = TREE_OPERAND (decl, 1); | |
066b4a1c MM |
4949 | |
4950 | /* [namespace.udecl] | |
4951 | ||
4952 | A using-declaration for a class member shall be a | |
4953 | member-declaration. */ | |
4954 | if (TREE_CODE (*scope) != NAMESPACE_DECL) | |
4955 | { | |
b5d51daa MM |
4956 | if (TYPE_P (*scope)) |
4957 | cp_error ("`%T' is not a namespace", *scope); | |
4958 | else | |
4959 | cp_error ("`%D' is not a namespace", *scope); | |
066b4a1c MM |
4960 | return NULL_TREE; |
4961 | } | |
2c73f9f5 | 4962 | } |
0228fa7e | 4963 | else if (TREE_CODE (decl) == IDENTIFIER_NODE |
75fbcb7d ML |
4964 | || TREE_CODE (decl) == TYPE_DECL |
4965 | || TREE_CODE (decl) == TEMPLATE_DECL) | |
2c73f9f5 | 4966 | { |
ea9635c7 ML |
4967 | *scope = global_namespace; |
4968 | *name = decl; | |
2c73f9f5 ML |
4969 | } |
4970 | else | |
4971 | my_friendly_abort (382); | |
2f939d94 | 4972 | if (DECL_P (*name)) |
ea9635c7 | 4973 | *name = DECL_NAME (*name); |
2c73f9f5 | 4974 | /* Make a USING_DECL. */ |
ea9635c7 ML |
4975 | return push_using_decl (*scope, *name); |
4976 | } | |
4977 | ||
4978 | /* Process local and global using-declarations. */ | |
4979 | ||
4980 | static void | |
4981 | do_nonmember_using_decl (scope, name, oldval, oldtype, newval, newtype) | |
4982 | tree scope, name; | |
4983 | tree oldval, oldtype; | |
4984 | tree *newval, *newtype; | |
4985 | { | |
4986 | tree decls; | |
ea9635c7 ML |
4987 | |
4988 | *newval = *newtype = NULL_TREE; | |
87e3dbc9 | 4989 | decls = make_node (CPLUS_BINDING); |
52c11ef6 | 4990 | if (!qualified_lookup_using_namespace (name, scope, decls, 0)) |
2c73f9f5 | 4991 | /* Lookup error */ |
a9aedbc2 | 4992 | return; |
6060a796 | 4993 | |
2c73f9f5 ML |
4994 | if (!BINDING_VALUE (decls) && !BINDING_TYPE (decls)) |
4995 | { | |
8251199e | 4996 | cp_error ("`%D' not declared", name); |
2c73f9f5 ML |
4997 | return; |
4998 | } | |
2c73f9f5 ML |
4999 | |
5000 | /* Check for using functions. */ | |
5001 | if (BINDING_VALUE (decls) && is_overloaded_fn (BINDING_VALUE (decls))) | |
5002 | { | |
2c73f9f5 | 5003 | tree tmp, tmp1; |
9ed182dc JM |
5004 | |
5005 | if (oldval && !is_overloaded_fn (oldval)) | |
5006 | { | |
5007 | duplicate_decls (OVL_CURRENT (BINDING_VALUE (decls)), oldval); | |
5008 | oldval = NULL_TREE; | |
5009 | } | |
5010 | ||
ea9635c7 | 5011 | *newval = oldval; |
2c73f9f5 ML |
5012 | for (tmp = BINDING_VALUE (decls); tmp; tmp = OVL_NEXT (tmp)) |
5013 | { | |
7bdbfa05 MM |
5014 | tree new_fn = OVL_CURRENT (tmp); |
5015 | ||
5016 | /* [namespace.udecl] | |
5017 | ||
5018 | If a function declaration in namespace scope or block | |
5019 | scope has the same name and the same parameter types as a | |
5020 | function introduced by a using declaration the program is | |
5021 | ill-formed. */ | |
2c73f9f5 | 5022 | for (tmp1 = oldval; tmp1; tmp1 = OVL_NEXT (tmp1)) |
7bdbfa05 MM |
5023 | { |
5024 | tree old_fn = OVL_CURRENT (tmp1); | |
a9aedbc2 | 5025 | |
7bdbfa05 MM |
5026 | if (!OVL_USED (tmp1) |
5027 | && compparms (TYPE_ARG_TYPES (TREE_TYPE (new_fn)), | |
5028 | TYPE_ARG_TYPES (TREE_TYPE (old_fn)))) | |
5029 | { | |
5030 | /* There was already a non-using declaration in | |
5031 | this scope with the same parameter types. */ | |
5032 | cp_error ("`%D' is already declared in this scope", | |
5033 | name); | |
5034 | break; | |
5035 | } | |
5036 | else if (duplicate_decls (new_fn, old_fn)) | |
5037 | /* We're re-using something we already used | |
5038 | before. We don't need to add it again. */ | |
5039 | break; | |
5040 | } | |
5041 | ||
5042 | /* If we broke out of the loop, there's no reason to add | |
5043 | this function to the using declarations for this | |
5044 | scope. */ | |
2c73f9f5 ML |
5045 | if (tmp1) |
5046 | continue; | |
5047 | ||
ea9635c7 ML |
5048 | *newval = build_overload (OVL_CURRENT (tmp), *newval); |
5049 | if (TREE_CODE (*newval) != OVERLOAD) | |
5050 | *newval = ovl_cons (*newval, NULL_TREE); | |
5051 | OVL_USED (*newval) = 1; | |
2c73f9f5 ML |
5052 | } |
5053 | } | |
5054 | else | |
a9aedbc2 | 5055 | { |
ea9635c7 | 5056 | *newval = BINDING_VALUE (decls); |
9ed182dc JM |
5057 | if (oldval) |
5058 | duplicate_decls (*newval, oldval); | |
2c73f9f5 ML |
5059 | } |
5060 | ||
ea9635c7 ML |
5061 | *newtype = BINDING_TYPE (decls); |
5062 | if (oldtype && *newtype && oldtype != *newtype) | |
2c73f9f5 | 5063 | { |
8251199e | 5064 | cp_error ("using directive `%D' introduced ambiguous type `%T'", |
ea9635c7 | 5065 | name, oldtype); |
2c73f9f5 | 5066 | return; |
a9aedbc2 | 5067 | } |
ea9635c7 ML |
5068 | } |
5069 | ||
5070 | /* Process a using-declaration not appearing in class or local scope. */ | |
5071 | ||
5072 | void | |
5073 | do_toplevel_using_decl (decl) | |
5074 | tree decl; | |
5075 | { | |
5076 | tree scope, name, binding; | |
5077 | tree oldval, oldtype, newval, newtype; | |
5078 | ||
5079 | decl = validate_nonmember_using_decl (decl, &scope, &name); | |
5080 | if (decl == NULL_TREE) | |
5081 | return; | |
5082 | ||
5083 | binding = binding_for_name (name, current_namespace); | |
5084 | ||
5085 | oldval = BINDING_VALUE (binding); | |
5086 | oldtype = BINDING_TYPE (binding); | |
5087 | ||
5088 | do_nonmember_using_decl (scope, name, oldval, oldtype, &newval, &newtype); | |
5089 | ||
2c73f9f5 ML |
5090 | /* Copy declarations found. */ |
5091 | if (newval) | |
5092 | BINDING_VALUE (binding) = newval; | |
5093 | if (newtype) | |
5094 | BINDING_TYPE (binding) = newtype; | |
5095 | return; | |
6060a796 MS |
5096 | } |
5097 | ||
9ed182dc JM |
5098 | /* Process a using-declaration at function scope. */ |
5099 | ||
ea9635c7 ML |
5100 | void |
5101 | do_local_using_decl (decl) | |
5102 | tree decl; | |
5103 | { | |
5104 | tree scope, name; | |
5105 | tree oldval, oldtype, newval, newtype; | |
9ed182dc | 5106 | |
ea9635c7 ML |
5107 | decl = validate_nonmember_using_decl (decl, &scope, &name); |
5108 | if (decl == NULL_TREE) | |
5109 | return; | |
5110 | ||
9ed182dc JM |
5111 | oldval = lookup_name_current_level (name); |
5112 | oldtype = lookup_type_current_level (name); | |
ea9635c7 ML |
5113 | |
5114 | do_nonmember_using_decl (scope, name, oldval, oldtype, &newval, &newtype); | |
5115 | ||
5116 | if (newval) | |
7bdbfa05 MM |
5117 | { |
5118 | if (is_overloaded_fn (newval)) | |
5119 | { | |
0580c9aa | 5120 | tree fn, term; |
7bdbfa05 MM |
5121 | |
5122 | /* We only need to push declarations for those functions | |
0580c9aa ML |
5123 | that were not already bound in the current level. |
5124 | The old value might be NULL_TREE, it might be a single | |
5125 | function, or an OVERLOAD. */ | |
5126 | if (oldval && TREE_CODE (oldval) == OVERLOAD) | |
5127 | term = OVL_FUNCTION (oldval); | |
5128 | else | |
5129 | term = oldval; | |
5130 | for (fn = newval; fn && OVL_CURRENT (fn) != term; | |
5131 | fn = OVL_NEXT (fn)) | |
7bdbfa05 MM |
5132 | push_overloaded_decl (OVL_CURRENT (fn), |
5133 | PUSH_LOCAL | PUSH_USING); | |
5134 | } | |
5135 | else | |
0034cf72 | 5136 | push_local_binding (name, newval, PUSH_USING); |
7bdbfa05 | 5137 | } |
9ed182dc JM |
5138 | if (newtype) |
5139 | set_identifier_type_value (name, newtype); | |
ea9635c7 ML |
5140 | } |
5141 | ||
6060a796 | 5142 | tree |
a9aedbc2 | 5143 | do_class_using_decl (decl) |
6060a796 MS |
5144 | tree decl; |
5145 | { | |
cffa8729 | 5146 | tree name, value; |
f30432d7 | 5147 | |
2c73f9f5 | 5148 | if (TREE_CODE (decl) != SCOPE_REF |
2f939d94 | 5149 | || !TYPE_P (TREE_OPERAND (decl, 0))) |
cffa8729 | 5150 | { |
8251199e | 5151 | cp_error ("using-declaration for non-member at class scope"); |
cffa8729 MS |
5152 | return NULL_TREE; |
5153 | } | |
5154 | name = TREE_OPERAND (decl, 1); | |
5155 | if (TREE_CODE (name) == BIT_NOT_EXPR) | |
5156 | { | |
8251199e | 5157 | cp_error ("using-declaration for destructor"); |
cffa8729 MS |
5158 | return NULL_TREE; |
5159 | } | |
1c35f5b6 JM |
5160 | if (TREE_CODE (name) == TYPE_DECL) |
5161 | name = DECL_NAME (name); | |
5162 | ||
5163 | my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 980716); | |
cffa8729 | 5164 | |
4ce3d537 | 5165 | value = build_lang_decl (USING_DECL, name, void_type_node); |
cffa8729 MS |
5166 | DECL_INITIAL (value) = TREE_OPERAND (decl, 0); |
5167 | return value; | |
6060a796 MS |
5168 | } |
5169 | ||
2c73f9f5 ML |
5170 | /* Process a using-directive. */ |
5171 | ||
6060a796 MS |
5172 | void |
5173 | do_using_directive (namespace) | |
5174 | tree namespace; | |
5175 | { | |
6633d636 MS |
5176 | if (namespace == std_node) |
5177 | return; | |
3e3f722c | 5178 | /* using namespace A::B::C; */ |
30394414 JM |
5179 | if (TREE_CODE (namespace) == SCOPE_REF) |
5180 | namespace = TREE_OPERAND (namespace, 1); | |
2c73f9f5 ML |
5181 | if (TREE_CODE (namespace) == IDENTIFIER_NODE) |
5182 | { | |
5183 | /* Lookup in lexer did not find a namespace. */ | |
8251199e | 5184 | cp_error ("namespace `%T' undeclared", namespace); |
2c73f9f5 ML |
5185 | return; |
5186 | } | |
5187 | if (TREE_CODE (namespace) != NAMESPACE_DECL) | |
5188 | { | |
8251199e | 5189 | cp_error ("`%T' is not a namespace", namespace); |
2c73f9f5 ML |
5190 | return; |
5191 | } | |
3e3f722c | 5192 | namespace = ORIGINAL_NAMESPACE (namespace); |
ea9635c7 | 5193 | if (!toplevel_bindings_p ()) |
9ed182dc | 5194 | push_using_directive (namespace); |
ea9635c7 ML |
5195 | else |
5196 | /* direct usage */ | |
5197 | add_using_namespace (current_namespace, namespace, 0); | |
6060a796 | 5198 | } |
f30432d7 MS |
5199 | |
5200 | void | |
5201 | check_default_args (x) | |
5202 | tree x; | |
5203 | { | |
5204 | tree arg = TYPE_ARG_TYPES (TREE_TYPE (x)); | |
5205 | int saw_def = 0, i = 0 - (TREE_CODE (TREE_TYPE (x)) == METHOD_TYPE); | |
5206 | for (; arg && arg != void_list_node; arg = TREE_CHAIN (arg), ++i) | |
5207 | { | |
5208 | if (TREE_PURPOSE (arg)) | |
5209 | saw_def = 1; | |
5210 | else if (saw_def) | |
5211 | { | |
8251199e | 5212 | cp_error_at ("default argument missing for parameter %P of `%+#D'", |
b7698cf0 | 5213 | i, x); |
f30432d7 MS |
5214 | break; |
5215 | } | |
5216 | } | |
5217 | } | |
72b7eeff MS |
5218 | |
5219 | void | |
5220 | mark_used (decl) | |
5221 | tree decl; | |
5222 | { | |
5223 | TREE_USED (decl) = 1; | |
5156628f | 5224 | if (processing_template_decl) |
5566b478 | 5225 | return; |
72b7eeff | 5226 | assemble_external (decl); |
36a117a5 | 5227 | |
73aad9b9 | 5228 | /* Is it a synthesized method that needs to be synthesized? */ |
4f1c5b7d MM |
5229 | if (TREE_CODE (decl) == FUNCTION_DECL |
5230 | && DECL_NONSTATIC_MEMBER_FUNCTION_P (decl) | |
5231 | && DECL_ARTIFICIAL (decl) | |
5232 | && ! DECL_INITIAL (decl) | |
73aad9b9 JM |
5233 | /* Kludge: don't synthesize for default args. */ |
5234 | && current_function_decl) | |
db9b2174 MM |
5235 | { |
5236 | synthesize_method (decl); | |
5237 | /* If we've already synthesized the method we don't need to | |
5238 | instantiate it, so we can return right away. */ | |
5239 | return; | |
5240 | } | |
36a117a5 MM |
5241 | |
5242 | /* If this is a function or variable that is an instance of some | |
5243 | template, we now know that we will need to actually do the | |
7c355bca | 5244 | instantiation. We check that DECL is not an explicit |
03d0f4af | 5245 | instantiation because that is not checked in instantiate_decl. */ |
7c355bca | 5246 | if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
03d0f4af | 5247 | && DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl) |
7610f2ce JM |
5248 | && (!DECL_EXPLICIT_INSTANTIATION (decl) |
5249 | || (TREE_CODE (decl) == FUNCTION_DECL && DECL_INLINE (decl)))) | |
16d53b64 | 5250 | instantiate_decl (decl, /*defer_ok=*/1); |
72b7eeff | 5251 | } |
f62dbf03 | 5252 | |
3d7de1fa MM |
5253 | /* Helper function for named_class_head_sans_basetype nonterminal. We |
5254 | have just seen something of the form `AGGR SCOPE::ID'. Return a | |
5255 | TYPE_DECL for the type declared by ID in SCOPE. */ | |
f62dbf03 JM |
5256 | |
5257 | tree | |
5258 | handle_class_head (aggr, scope, id) | |
5259 | tree aggr, scope, id; | |
5260 | { | |
3d7de1fa MM |
5261 | tree decl; |
5262 | ||
f62dbf03 | 5263 | if (TREE_CODE (id) == TYPE_DECL) |
3d7de1fa MM |
5264 | decl = id; |
5265 | else if (DECL_CLASS_TEMPLATE_P (id)) | |
5266 | decl = DECL_TEMPLATE_RESULT (id); | |
5267 | else | |
5268 | { | |
d7f426dc NS |
5269 | tree current = current_scope(); |
5270 | ||
5271 | if (current == NULL_TREE) | |
5272 | current = current_namespace; | |
5273 | if (scope == std_node) | |
5274 | scope = global_namespace; | |
5275 | if (scope == NULL_TREE) | |
5276 | scope = global_namespace; | |
5277 | if (scope == current) | |
5278 | { | |
5279 | /* We've been given AGGR SCOPE::ID, when we're already inside SCOPE. | |
5280 | Be nice about it. */ | |
5281 | if (pedantic) | |
5282 | cp_pedwarn ("extra qualification `%T::' on member `%D' ignored", | |
5283 | FROB_CONTEXT (scope), id); | |
5284 | } | |
5285 | else if (scope != global_namespace) | |
5286 | cp_error ("`%T' does not have a nested type named `%D'", scope, id); | |
3d7de1fa MM |
5287 | else |
5288 | cp_error ("no file-scope type named `%D'", id); | |
5289 | ||
d7f426dc NS |
5290 | /* Inject it at the current scope. */ |
5291 | decl = TYPE_MAIN_DECL (xref_tag (aggr, id, 1)); | |
3d7de1fa | 5292 | } |
d7f426dc NS |
5293 | |
5294 | /* Enter the SCOPE. If this turns out not to be a definition, the | |
5295 | parser must leave the scope. */ | |
3d7de1fa MM |
5296 | push_scope (CP_DECL_CONTEXT (decl)); |
5297 | ||
5298 | /* If we see something like: | |
f62dbf03 | 5299 | |
3d7de1fa MM |
5300 | template <typename T> struct S::I .... |
5301 | ||
5302 | we must create a TEMPLATE_DECL for the nested type. */ | |
5303 | if (PROCESSING_REAL_TEMPLATE_DECL_P ()) | |
5304 | decl = push_template_decl (decl); | |
5305 | ||
5306 | return decl; | |
f62dbf03 | 5307 | } |
fc6af6e3 RH |
5308 | |
5309 | /* Initialize decl2.c. */ | |
5310 | ||
5311 | void | |
5312 | init_decl2 () | |
5313 | { | |
5314 | ggc_add_tree_root (&decl_namespace_list, 1); | |
56e770bf | 5315 | ggc_add_tree_varray_root (&deferred_fns, 1); |
9cd64686 MM |
5316 | ggc_add_tree_varray_root (&pending_statics, 1); |
5317 | ggc_add_tree_varray_root (&ssdf_decls, 1); | |
5318 | ggc_add_tree_root (&ssdf_decl, 1); | |
5319 | ggc_add_tree_root (&priority_decl, 1); | |
5320 | ggc_add_tree_root (&initialize_p_decl, 1); | |
5321 | ggc_add_tree_root (&pending_vtables, 1); | |
fc6af6e3 | 5322 | } |