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7f4edbcb | 1 | /* Definitions for c-common.c. |
517cbe13 | 2 | Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, |
d9221e01 | 3 | 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
7f4edbcb | 4 | |
1322177d | 5 | This file is part of GCC. |
7f4edbcb | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
7f4edbcb | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
7f4edbcb BS |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
7f4edbcb | 21 | |
0e5921e8 ZW |
22 | #ifndef GCC_C_COMMON_H |
23 | #define GCC_C_COMMON_H | |
24 | ||
8f17b5c5 | 25 | #include "splay-tree.h" |
2a967f3d | 26 | #include "cpplib.h" |
d07605f5 | 27 | #include "ggc.h" |
8f17b5c5 | 28 | |
f2c5f623 | 29 | /* Usage of TREE_LANG_FLAG_?: |
325c3691 | 30 | 0: TREE_NEGATED_INT (in INTEGER_CST). |
f2c5f623 | 31 | IDENTIFIER_MARKED (used by search routines). |
f2c5f623 | 32 | DECL_PRETTY_FUNCTION_P (in VAR_DECL) |
b2123dc0 | 33 | STMT_EXPR_NO_SCOPE (in STMT_EXPR) |
f2c5f623 BC |
34 | 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) |
35 | STMT_IS_FULL_EXPR_P (in _STMT) | |
325c3691 | 36 | STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) |
6de9cd9a | 37 | 2: unused |
325c3691 RH |
38 | 3: unused |
39 | 4: unused | |
f2c5f623 BC |
40 | */ |
41 | ||
0e5921e8 | 42 | /* Reserved identifiers. This is the union of all the keywords for C, |
40f03658 | 43 | C++, and Objective-C. All the type modifiers have to be in one |
0e5921e8 ZW |
44 | block at the beginning, because they are used as mask bits. There |
45 | are 27 type modifiers; if we add many more we will have to redesign | |
46 | the mask mechanism. */ | |
f09f1de5 MM |
47 | |
48 | enum rid | |
49 | { | |
0e5921e8 | 50 | /* Modifiers: */ |
2ba84f36 | 51 | /* C, in empirical order of frequency. */ |
0e5921e8 ZW |
52 | RID_STATIC = 0, |
53 | RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, | |
54 | RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, | |
55 | RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, | |
56 | ||
57 | /* C extensions */ | |
66804d9e | 58 | RID_COMPLEX, RID_THREAD, |
0e5921e8 ZW |
59 | |
60 | /* C++ */ | |
61 | RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, | |
62 | ||
63 | /* ObjC */ | |
b8363a24 | 64 | RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, |
0e5921e8 ZW |
65 | |
66 | /* C */ | |
67 | RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, | |
68 | RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, | |
69 | RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, | |
70 | RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, | |
71 | RID_SIZEOF, | |
72 | ||
73 | /* C extensions */ | |
74 | RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, | |
75 | RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE, | |
ecbcf7b3 | 76 | RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P, |
0e5921e8 | 77 | |
0ba8a114 NS |
78 | /* Too many ways of getting the name of a function as a string */ |
79 | RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, | |
80 | ||
0e5921e8 ZW |
81 | /* C++ */ |
82 | RID_BOOL, RID_WCHAR, RID_CLASS, | |
83 | RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, | |
84 | RID_TEMPLATE, RID_NULL, RID_CATCH, | |
85 | RID_DELETE, RID_FALSE, RID_NAMESPACE, | |
263ee052 MM |
86 | RID_NEW, RID_OFFSETOF, RID_OPERATOR, |
87 | RID_THIS, RID_THROW, RID_TRUE, | |
88 | RID_TRY, RID_TYPENAME, RID_TYPEID, | |
89 | RID_USING, | |
0e5921e8 ZW |
90 | |
91 | /* casts */ | |
92 | RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, | |
93 | ||
40f03658 | 94 | /* Objective-C */ |
0e5921e8 ZW |
95 | RID_ID, RID_AT_ENCODE, RID_AT_END, |
96 | RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, | |
97 | RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, | |
264fa2db ZL |
98 | RID_AT_PROTOCOL, RID_AT_SELECTOR, |
99 | RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, | |
100 | RID_AT_FINALLY, RID_AT_SYNCHRONIZED, | |
101 | RID_AT_INTERFACE, | |
0e5921e8 ZW |
102 | RID_AT_IMPLEMENTATION, |
103 | ||
104 | RID_MAX, | |
105 | ||
106 | RID_FIRST_MODIFIER = RID_STATIC, | |
b8363a24 ZW |
107 | RID_LAST_MODIFIER = RID_ONEWAY, |
108 | ||
109 | RID_FIRST_AT = RID_AT_ENCODE, | |
110 | RID_LAST_AT = RID_AT_IMPLEMENTATION, | |
111 | RID_FIRST_PQ = RID_IN, | |
112 | RID_LAST_PQ = RID_ONEWAY | |
f09f1de5 MM |
113 | }; |
114 | ||
b8363a24 ZW |
115 | #define OBJC_IS_AT_KEYWORD(rid) \ |
116 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \ | |
117 | (unsigned int)(rid) <= (unsigned int)RID_LAST_AT) | |
118 | ||
119 | #define OBJC_IS_PQ_KEYWORD(rid) \ | |
120 | ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \ | |
121 | (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ) | |
122 | ||
f09f1de5 MM |
123 | /* The elements of `ridpointers' are identifier nodes for the reserved |
124 | type names and storage classes. It is indexed by a RID_... value. */ | |
17211ab5 | 125 | extern GTY ((length ("(int)RID_MAX"))) tree *ridpointers; |
f09f1de5 | 126 | |
7f4edbcb BS |
127 | /* Standard named or nameless data types of the C compiler. */ |
128 | ||
129 | enum c_tree_index | |
130 | { | |
7f4edbcb BS |
131 | CTI_WCHAR_TYPE, |
132 | CTI_SIGNED_WCHAR_TYPE, | |
133 | CTI_UNSIGNED_WCHAR_TYPE, | |
c5ab7f91 | 134 | CTI_WINT_TYPE, |
cd732418 JM |
135 | CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ |
136 | CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ | |
b15ad712 JM |
137 | CTI_INTMAX_TYPE, |
138 | CTI_UINTMAX_TYPE, | |
7f4edbcb BS |
139 | CTI_WIDEST_INT_LIT_TYPE, |
140 | CTI_WIDEST_UINT_LIT_TYPE, | |
141 | ||
7f4edbcb BS |
142 | CTI_CHAR_ARRAY_TYPE, |
143 | CTI_WCHAR_ARRAY_TYPE, | |
144 | CTI_INT_ARRAY_TYPE, | |
145 | CTI_STRING_TYPE, | |
146 | CTI_CONST_STRING_TYPE, | |
147 | ||
19552aa5 | 148 | /* Type for boolean expressions (bool in C++, int in C). */ |
de7df9eb JM |
149 | CTI_TRUTHVALUE_TYPE, |
150 | CTI_TRUTHVALUE_TRUE, | |
151 | CTI_TRUTHVALUE_FALSE, | |
152 | ||
7f4edbcb | 153 | CTI_DEFAULT_FUNCTION_TYPE, |
7f4edbcb | 154 | |
2ba84f36 | 155 | /* These are not types, but we have to look them up all the time. */ |
0ba8a114 NS |
156 | CTI_FUNCTION_NAME_DECL, |
157 | CTI_PRETTY_FUNCTION_NAME_DECL, | |
158 | CTI_C99_FUNCTION_NAME_DECL, | |
159 | CTI_SAVED_FUNCTION_NAME_DECLS, | |
160 | ||
ae499cce MM |
161 | CTI_VOID_ZERO, |
162 | ||
7f4edbcb BS |
163 | CTI_MAX |
164 | }; | |
165 | ||
b621a4dd | 166 | #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code) |
2a967f3d NB |
167 | |
168 | /* Identifier part common to the C front ends. Inherits from | |
169 | tree_identifier, despite appearances. */ | |
e2500fed | 170 | struct c_common_identifier GTY(()) |
2a967f3d NB |
171 | { |
172 | struct tree_common common; | |
17211ab5 | 173 | struct cpp_hashnode node; |
2a967f3d NB |
174 | }; |
175 | ||
7f4edbcb BS |
176 | #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] |
177 | #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] | |
178 | #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] | |
c5ab7f91 | 179 | #define wint_type_node c_global_trees[CTI_WINT_TYPE] |
cd732418 JM |
180 | #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] |
181 | #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] | |
b15ad712 JM |
182 | #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] |
183 | #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] | |
7f4edbcb BS |
184 | #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] |
185 | #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] | |
186 | ||
de7df9eb JM |
187 | #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] |
188 | #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] | |
189 | #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] | |
19552aa5 | 190 | |
7f4edbcb BS |
191 | #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] |
192 | #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] | |
193 | #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] | |
194 | #define string_type_node c_global_trees[CTI_STRING_TYPE] | |
195 | #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] | |
196 | ||
197 | #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] | |
7f4edbcb | 198 | |
0ba8a114 NS |
199 | #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] |
200 | #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] | |
201 | #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] | |
202 | #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] | |
63ad61ed | 203 | |
ae499cce MM |
204 | /* A node for `((void) 0)'. */ |
205 | #define void_zero_node c_global_trees[CTI_VOID_ZERO] | |
206 | ||
e2500fed | 207 | extern GTY(()) tree c_global_trees[CTI_MAX]; |
ab76ca54 | 208 | |
e0a21ab9 KH |
209 | /* In a RECORD_TYPE, a sorted array of the fields of the type, not a |
210 | tree for size reasons. */ | |
d07605f5 AP |
211 | struct sorted_fields_type GTY(()) |
212 | { | |
213 | int len; | |
214 | tree GTY((length ("%h.len"))) elts[1]; | |
215 | }; | |
216 | ||
8f17b5c5 MM |
217 | /* Mark which labels are explicitly declared. |
218 | These may be shadowed, and may be referenced from nested functions. */ | |
219 | #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) | |
220 | ||
9aa8a1df NB |
221 | /* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a |
222 | warning if they undergo concatenation. */ | |
223 | #define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE) | |
224 | ||
ab76ca54 MM |
225 | typedef enum c_language_kind |
226 | { | |
37fa72e9 NB |
227 | clk_c = 0, /* C90, C94 or C99 */ |
228 | clk_objc = 1, /* clk_c with ObjC features. */ | |
229 | clk_cxx = 2, /* ANSI/ISO C++ */ | |
230 | clk_objcxx = 3 /* clk_cxx with ObjC features. */ | |
21c7361e | 231 | } |
ab76ca54 MM |
232 | c_language_kind; |
233 | ||
37fa72e9 NB |
234 | /* To test for a specific language use c_language, defined by each |
235 | front end. For "ObjC features" or "not C++" use the macros. */ | |
236 | extern c_language_kind c_language; | |
237 | ||
238 | #define c_dialect_cxx() (c_language & clk_cxx) | |
239 | #define c_dialect_objc() (c_language & clk_objc) | |
240 | ||
ae499cce MM |
241 | /* Information about a statement tree. */ |
242 | ||
e2500fed | 243 | struct stmt_tree_s GTY(()) { |
325c3691 RH |
244 | /* The current statment list being collected. */ |
245 | tree x_cur_stmt_list; | |
246 | ||
da7d8304 | 247 | /* In C++, Nonzero if we should treat statements as full |
ae499cce MM |
248 | expressions. In particular, this variable is no-zero if at the |
249 | end of a statement we should destroy any temporaries created | |
250 | during that statement. Similarly, if, at the end of a block, we | |
251 | should destroy any local variables in this block. Normally, this | |
da7d8304 | 252 | variable is nonzero, since those are the normal semantics of |
ae499cce MM |
253 | C++. |
254 | ||
255 | However, in order to represent aggregate initialization code as | |
256 | tree structure, we use statement-expressions. The statements | |
257 | within the statement expression should not result in cleanups | |
21c7361e | 258 | being run until the entire enclosing statement is complete. |
ae499cce MM |
259 | |
260 | This flag has no effect in C. */ | |
21c7361e | 261 | int stmts_are_full_exprs_p; |
ae499cce MM |
262 | }; |
263 | ||
264 | typedef struct stmt_tree_s *stmt_tree; | |
265 | ||
266 | /* Global state pertinent to the current function. Some C dialects | |
267 | extend this structure with additional fields. */ | |
268 | ||
e2500fed | 269 | struct c_language_function GTY(()) { |
ae499cce MM |
270 | /* While we are parsing the function, this contains information |
271 | about the statement-tree that we are building. */ | |
272 | struct stmt_tree_s x_stmt_tree; | |
273 | }; | |
274 | ||
325c3691 RH |
275 | /* When building a statement-tree, this is the current statment list |
276 | being collected. It's TREE_CHAIN is a back-pointer to the previous | |
277 | statment list. */ | |
ae499cce | 278 | |
325c3691 | 279 | #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list) |
8f17b5c5 MM |
280 | |
281 | /* Language-specific hooks. */ | |
282 | ||
35b1a6fa | 283 | extern void (*lang_expand_function_end) (void); |
8f17b5c5 | 284 | |
21c7361e AJ |
285 | /* Callback that determines if it's ok for a function to have no |
286 | noreturn attribute. */ | |
35b1a6fa AJ |
287 | extern int (*lang_missing_noreturn_ok_p) (tree); |
288 | ||
f75fbaf7 ZW |
289 | extern void push_file_scope (void); |
290 | extern void pop_file_scope (void); | |
35b1a6fa | 291 | extern int yyparse (void); |
35b1a6fa | 292 | extern stmt_tree current_stmt_tree (void); |
325c3691 RH |
293 | extern tree push_stmt_list (void); |
294 | extern tree re_push_stmt_list (tree); | |
295 | extern tree pop_stmt_list (tree); | |
35b1a6fa | 296 | extern tree add_stmt (tree); |
325c3691 | 297 | extern void push_cleanup (tree, tree, bool); |
35b1a6fa AJ |
298 | |
299 | extern tree walk_stmt_tree (tree *, walk_tree_fn, void *); | |
3c79fa86 | 300 | extern int c_expand_decl (tree); |
c1e14513 | 301 | |
d07605f5 AP |
302 | extern int field_decl_cmp (const void *, const void *); |
303 | extern void resort_sorted_fields (void *, void *, gt_pointer_operator, | |
304 | void *); | |
84b8b0e0 | 305 | extern bool has_c_linkage (tree decl); |
17211ab5 | 306 | \f |
4078b403 NB |
307 | /* Switches common to the C front ends. */ |
308 | ||
aaf93206 | 309 | /* Nonzero if prepreprocessing only. */ |
17211ab5 | 310 | |
aaf93206 NB |
311 | extern int flag_preprocess_only; |
312 | ||
264fa2db ZL |
313 | /* Zero means that faster, ...NonNil variants of objc_msgSend... |
314 | calls will be used in ObjC; passing nil receivers to such calls | |
315 | will most likely result in crashes. */ | |
316 | extern int flag_nil_receivers; | |
317 | ||
318 | /* Nonzero means that we will allow new ObjC exception syntax (@throw, | |
319 | @try, etc.) in source code. */ | |
320 | extern int flag_objc_exceptions; | |
321 | ||
093c7153 RH |
322 | /* Nonzero means that we generate NeXT setjmp based exceptions. */ |
323 | extern int flag_objc_sjlj_exceptions; | |
324 | ||
264fa2db ZL |
325 | /* Nonzero means that code generation will be altered to support |
326 | "zero-link" execution. This currently affects ObjC only, but may | |
327 | affect other languages in the future. */ | |
328 | extern int flag_zero_link; | |
329 | ||
330 | /* Nonzero means emit an '__OBJC, __image_info' for the current translation | |
331 | unit. It will inform the ObjC runtime that class definition(s) herein | |
332 | contained are to replace one(s) previously loaded. */ | |
333 | extern int flag_replace_objc_classes; | |
334 | ||
63973df3 NB |
335 | /* Nonzero means don't output line number information. */ |
336 | ||
337 | extern char flag_no_line_commands; | |
338 | ||
339 | /* Nonzero causes -E output not to be done, but directives such as | |
340 | #define that have side effects are still obeyed. */ | |
341 | ||
342 | extern char flag_no_output; | |
343 | ||
344 | /* Nonzero means dump macros in some fashion; contains the 'D', 'M' or | |
345 | 'N' of the command line switch. */ | |
346 | ||
347 | extern char flag_dump_macros; | |
348 | ||
349 | /* Nonzero means pass #include lines through to the output. */ | |
350 | ||
351 | extern char flag_dump_includes; | |
352 | ||
17211ab5 GK |
353 | /* The file name to which we should write a precompiled header, or |
354 | NULL if no header will be written in this compile. */ | |
355 | ||
356 | extern const char *pch_file; | |
357 | ||
3df89291 NB |
358 | /* Nonzero if an ISO standard was selected. It rejects macros in the |
359 | user's namespace. */ | |
17211ab5 | 360 | |
3df89291 NB |
361 | extern int flag_iso; |
362 | ||
363 | /* Nonzero if -undef was given. It suppresses target built-in macros | |
364 | and assertions. */ | |
17211ab5 | 365 | |
3df89291 NB |
366 | extern int flag_undef; |
367 | ||
4078b403 | 368 | /* Nonzero means don't recognize the non-ANSI builtin functions. */ |
ab76ca54 | 369 | |
4078b403 NB |
370 | extern int flag_no_builtin; |
371 | ||
372 | /* Nonzero means don't recognize the non-ANSI builtin functions. | |
373 | -ansi sets this. */ | |
374 | ||
375 | extern int flag_no_nonansi_builtin; | |
ab76ca54 | 376 | |
eaa7c03f JM |
377 | /* Nonzero means give `double' the same size as `float'. */ |
378 | ||
379 | extern int flag_short_double; | |
380 | ||
381 | /* Nonzero means give `wchar_t' the same size as `short'. */ | |
382 | ||
383 | extern int flag_short_wchar; | |
384 | ||
750491fc RH |
385 | /* Nonzero means allow Microsoft extensions without warnings or errors. */ |
386 | extern int flag_ms_extensions; | |
387 | ||
4078b403 NB |
388 | /* Nonzero means don't recognize the keyword `asm'. */ |
389 | ||
390 | extern int flag_no_asm; | |
391 | ||
392 | /* Nonzero means give string constants the type `const char *', as mandated | |
393 | by the standard. */ | |
394 | ||
395 | extern int flag_const_strings; | |
396 | ||
4078b403 NB |
397 | /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ |
398 | ||
399 | extern int flag_signed_bitfields; | |
400 | extern int explicit_flag_signed_bitfields; | |
401 | ||
402 | /* Nonzero means warn about pointer casts that can drop a type qualifier | |
403 | from the pointer target type. */ | |
404 | ||
405 | extern int warn_cast_qual; | |
406 | ||
407 | /* Warn about functions which might be candidates for format attributes. */ | |
408 | ||
409 | extern int warn_missing_format_attribute; | |
410 | ||
411 | /* Nonzero means warn about sizeof(function) or addition/subtraction | |
412 | of function pointers. */ | |
413 | ||
414 | extern int warn_pointer_arith; | |
415 | ||
416 | /* Nonzero means warn for any global function def | |
417 | without separate previous prototype decl. */ | |
418 | ||
419 | extern int warn_missing_prototypes; | |
420 | ||
421 | /* Warn if adding () is suggested. */ | |
422 | ||
423 | extern int warn_parentheses; | |
424 | ||
425 | /* Warn if initializer is not completely bracketed. */ | |
426 | ||
427 | extern int warn_missing_braces; | |
428 | ||
429 | /* Warn about comparison of signed and unsigned values. | |
430 | If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */ | |
431 | ||
432 | extern int warn_sign_compare; | |
433 | ||
434 | /* Nonzero means warn about usage of long long when `-pedantic'. */ | |
435 | ||
436 | extern int warn_long_long; | |
437 | ||
438 | /* Nonzero means warn about deprecated conversion from string constant to | |
439 | `char *'. */ | |
440 | ||
441 | extern int warn_write_strings; | |
442 | ||
443 | /* Nonzero means warn about multiple (redundant) decls for the same single | |
444 | variable or function. */ | |
445 | ||
446 | extern int warn_redundant_decls; | |
447 | ||
4b7e68e7 | 448 | /* Warn about testing equality of floating point numbers. */ |
4078b403 NB |
449 | |
450 | extern int warn_float_equal; | |
451 | ||
452 | /* Warn about a subscript that has type char. */ | |
453 | ||
454 | extern int warn_char_subscripts; | |
455 | ||
456 | /* Warn if a type conversion is done that might have confusing results. */ | |
457 | ||
458 | extern int warn_conversion; | |
459 | ||
05713b80 | 460 | /* Warn about #pragma directives that are not recognized. */ |
4078b403 NB |
461 | |
462 | extern int warn_unknown_pragmas; /* Tri state variable. */ | |
463 | ||
4078b403 NB |
464 | /* Warn about format/argument anomalies in calls to formatted I/O functions |
465 | (*printf, *scanf, strftime, strfmon, etc.). */ | |
ab76ca54 MM |
466 | |
467 | extern int warn_format; | |
468 | ||
4d808927 JM |
469 | /* Warn about Y2K problems with strftime formats. */ |
470 | ||
471 | extern int warn_format_y2k; | |
472 | ||
473 | /* Warn about excess arguments to formats. */ | |
474 | ||
475 | extern int warn_format_extra_args; | |
476 | ||
e964a556 JT |
477 | /* Warn about zero-length formats. */ |
478 | ||
479 | extern int warn_format_zero_length; | |
480 | ||
4d808927 JM |
481 | /* Warn about non-literal format arguments. */ |
482 | ||
483 | extern int warn_format_nonliteral; | |
484 | ||
c907e684 JM |
485 | /* Warn about possible security problems with calls to format functions. */ |
486 | ||
487 | extern int warn_format_security; | |
488 | ||
b34c7881 | 489 | |
4078b403 | 490 | /* C/ObjC language option variables. */ |
b34c7881 | 491 | |
2683ed8d | 492 | |
4078b403 NB |
493 | /* Nonzero means message about use of implicit function declarations; |
494 | 1 means warning; 2 means error. */ | |
2683ed8d | 495 | |
4078b403 | 496 | extern int mesg_implicit_function_declaration; |
74ff4629 | 497 | |
4078b403 NB |
498 | /* Nonzero means allow type mismatches in conditional expressions; |
499 | just make their values `void'. */ | |
74ff4629 | 500 | |
4078b403 | 501 | extern int flag_cond_mismatch; |
6c36d76b | 502 | |
eaf299c6 | 503 | /* Nonzero means enable C89 Amendment 1 features. */ |
b8458e3e JM |
504 | |
505 | extern int flag_isoc94; | |
506 | ||
ab76ca54 MM |
507 | /* Nonzero means use the ISO C99 dialect of C. */ |
508 | ||
509 | extern int flag_isoc99; | |
510 | ||
6614fd40 | 511 | /* Nonzero means that we have builtin functions, and main is an int. */ |
93e2382f JM |
512 | |
513 | extern int flag_hosted; | |
514 | ||
4078b403 NB |
515 | /* Nonzero means warn when casting a function call to a type that does |
516 | not match the return type (e.g. (float)sqrt() or (anything*)malloc() | |
517 | when there is no previous declaration of sqrt or malloc. */ | |
6bcedb4e | 518 | |
4078b403 | 519 | extern int warn_bad_function_cast; |
6bcedb4e | 520 | |
4078b403 | 521 | /* Warn about traditional constructs whose meanings changed in ANSI C. */ |
6bcedb4e | 522 | |
4078b403 | 523 | extern int warn_traditional; |
6bcedb4e | 524 | |
85617eba HPN |
525 | /* Nonzero means warn for a declaration found after a statement. */ |
526 | ||
527 | extern int warn_declaration_after_statement; | |
528 | ||
4078b403 NB |
529 | /* Nonzero means warn for non-prototype function decls |
530 | or non-prototyped defs without previous prototype. */ | |
ab76ca54 | 531 | |
4078b403 | 532 | extern int warn_strict_prototypes; |
ab76ca54 | 533 | |
4078b403 NB |
534 | /* Nonzero means warn for any global function def |
535 | without separate previous decl. */ | |
536 | ||
537 | extern int warn_missing_declarations; | |
538 | ||
539 | /* Nonzero means warn about extern declarations of objects not at | |
540 | file-scope level and about *all* declarations of functions (whether | |
541 | extern or static) not at file-scope level. Note that we exclude | |
542 | implicit function declarations. To get warnings about those, use | |
543 | -Wimplicit. */ | |
544 | ||
545 | extern int warn_nested_externs; | |
546 | ||
547 | /* Warn if main is suspicious. */ | |
548 | ||
549 | extern int warn_main; | |
550 | ||
551 | /* Nonzero means warn about possible violations of sequence point rules. */ | |
552 | ||
553 | extern int warn_sequence_point; | |
554 | ||
3390f9c9 | 555 | /* Nonzero means warn about uninitialized variable when it is initialized with itself. |
59e4e217 | 556 | For example: int i = i;, GCC will not warn about this when warn_init_self is nonzero. */ |
3390f9c9 AP |
557 | |
558 | extern int warn_init_self; | |
559 | ||
560 | ||
4078b403 NB |
561 | /* Nonzero means to warn about compile-time division by zero. */ |
562 | extern int warn_div_by_zero; | |
563 | ||
564 | /* Nonzero means warn about use of implicit int. */ | |
565 | ||
566 | extern int warn_implicit_int; | |
567 | ||
568 | /* Warn about NULL being passed to argument slots marked as requiring | |
569 | non-NULL. */ | |
570 | ||
571 | extern int warn_nonnull; | |
572 | ||
c034f121 AJ |
573 | /* Warn about old-style parameter declaration. */ |
574 | ||
575 | extern int warn_old_style_definition; | |
576 | ||
4078b403 NB |
577 | |
578 | /* ObjC language option variables. */ | |
579 | ||
580 | ||
581 | /* Open and close the file for outputting class declarations, if | |
582 | requested (ObjC). */ | |
583 | ||
584 | extern int flag_gen_declaration; | |
585 | ||
586 | /* Generate code for GNU or NeXT runtime environment. */ | |
587 | ||
588 | extern int flag_next_runtime; | |
589 | ||
590 | /* Tells the compiler that this is a special run. Do not perform any | |
591 | compiling, instead we are to test some platform dependent features | |
592 | and output a C header file with appropriate definitions. */ | |
593 | ||
594 | extern int print_struct_values; | |
595 | ||
596 | /* ???. Undocumented. */ | |
597 | ||
fd350d24 | 598 | extern const char *constant_string_class_name; |
4078b403 NB |
599 | |
600 | /* Warn if multiple methods are seen for the same selector, but with | |
ece4ce85 NP |
601 | different argument types. Performs the check on the whole selector |
602 | table at the end of compilation. */ | |
4078b403 NB |
603 | |
604 | extern int warn_selector; | |
605 | ||
ece4ce85 NP |
606 | /* Warn if a @selector() is found, and no method with that selector |
607 | has been previously declared. The check is done on each | |
608 | @selector() as soon as it is found - so it warns about forward | |
609 | declarations. */ | |
610 | ||
611 | extern int warn_undeclared_selector; | |
612 | ||
4078b403 NB |
613 | /* Warn if methods required by a protocol are not implemented in the |
614 | class adopting it. When turned off, methods inherited to that | |
615 | class are also considered implemented. */ | |
616 | ||
617 | extern int warn_protocol; | |
618 | ||
619 | ||
620 | /* C++ language option variables. */ | |
621 | ||
622 | ||
623 | /* Nonzero means don't recognize any extension keywords. */ | |
624 | ||
625 | extern int flag_no_gnu_keywords; | |
626 | ||
627 | /* Nonzero means do emit exported implementations of functions even if | |
628 | they can be inlined. */ | |
629 | ||
630 | extern int flag_implement_inlines; | |
631 | ||
4078b403 NB |
632 | /* Nonzero means that implicit instantiations will be emitted if needed. */ |
633 | ||
634 | extern int flag_implicit_templates; | |
635 | ||
636 | /* Nonzero means that implicit instantiations of inline templates will be | |
637 | emitted if needed, even if instantiations of non-inline templates | |
638 | aren't. */ | |
639 | ||
640 | extern int flag_implicit_inline_templates; | |
641 | ||
642 | /* Nonzero means generate separate instantiation control files and | |
643 | juggle them at link time. */ | |
644 | ||
645 | extern int flag_use_repository; | |
646 | ||
647 | /* Nonzero if we want to issue diagnostics that the standard says are not | |
648 | required. */ | |
649 | ||
650 | extern int flag_optional_diags; | |
651 | ||
652 | /* Nonzero means we should attempt to elide constructors when possible. */ | |
653 | ||
654 | extern int flag_elide_constructors; | |
655 | ||
656 | /* Nonzero means that member functions defined in class scope are | |
657 | inline by default. */ | |
658 | ||
659 | extern int flag_default_inline; | |
660 | ||
661 | /* Controls whether compiler generates 'type descriptor' that give | |
662 | run-time type information. */ | |
663 | ||
664 | extern int flag_rtti; | |
665 | ||
666 | /* Nonzero if we want to conserve space in the .o files. We do this | |
667 | by putting uninitialized data and runtime initialized data into | |
668 | .common instead of .data at the expense of not flagging multiple | |
669 | definitions. */ | |
670 | ||
671 | extern int flag_conserve_space; | |
672 | ||
673 | /* Nonzero if we want to obey access control semantics. */ | |
674 | ||
675 | extern int flag_access_control; | |
676 | ||
677 | /* Nonzero if we want to check the return value of new and avoid calling | |
678 | constructors if it is a null pointer. */ | |
679 | ||
680 | extern int flag_check_new; | |
681 | ||
682 | /* Nonzero if we want the new ISO rules for pushing a new scope for `for' | |
683 | initialization variables. | |
684 | 0: Old rules, set by -fno-for-scope. | |
685 | 2: New ISO rules, set by -ffor-scope. | |
686 | 1: Try to implement new ISO rules, but with backup compatibility | |
687 | (and warnings). This is the default, for now. */ | |
688 | ||
689 | extern int flag_new_for_scope; | |
690 | ||
691 | /* Nonzero if we want to emit defined symbols with common-like linkage as | |
692 | weak symbols where possible, in order to conform to C++ semantics. | |
693 | Otherwise, emit them as local symbols. */ | |
694 | ||
695 | extern int flag_weak; | |
696 | ||
b20d9f0c AO |
697 | /* 0 means we want the preprocessor to not emit line directives for |
698 | the current working directory. 1 means we want it to do it. -1 | |
699 | means we should decide depending on whether debugging information | |
700 | is being emitted or not. */ | |
701 | ||
702 | extern int flag_working_directory; | |
703 | ||
4078b403 NB |
704 | /* Nonzero to use __cxa_atexit, rather than atexit, to register |
705 | destructors for local statics and global objects. */ | |
706 | ||
707 | extern int flag_use_cxa_atexit; | |
708 | ||
4078b403 NB |
709 | /* Nonzero means make the default pedwarns warnings instead of errors. |
710 | The value of this flag is ignored if -pedantic is specified. */ | |
711 | ||
712 | extern int flag_permissive; | |
713 | ||
714 | /* Nonzero means to implement standard semantics for exception | |
715 | specifications, calling unexpected if an exception is thrown that | |
716 | doesn't match the specification. Zero means to treat them as | |
717 | assertions and optimize accordingly, but not check them. */ | |
718 | ||
719 | extern int flag_enforce_eh_specs; | |
720 | ||
eca7f13c MM |
721 | /* Nonzero means warn about things that will change when compiling |
722 | with an ABI-compliant compiler. */ | |
723 | ||
724 | extern int warn_abi; | |
725 | ||
71c0e7fc | 726 | /* Nonzero means warn about invalid uses of offsetof. */ |
a01fff59 MA |
727 | |
728 | extern int warn_invalid_offsetof; | |
729 | ||
4078b403 NB |
730 | /* Nonzero means warn about implicit declarations. */ |
731 | ||
732 | extern int warn_implicit; | |
733 | ||
734 | /* Nonzero means warn when all ctors or dtors are private, and the class | |
735 | has no friends. */ | |
736 | ||
737 | extern int warn_ctor_dtor_privacy; | |
738 | ||
da7d8304 | 739 | /* Nonzero means warn in function declared in derived class has the |
4078b403 NB |
740 | same name as a virtual in the base class, but fails to match the |
741 | type signature of any virtual function in the base class. */ | |
742 | ||
743 | extern int warn_overloaded_virtual; | |
744 | ||
da7d8304 | 745 | /* Nonzero means warn when declaring a class that has a non virtual |
4078b403 NB |
746 | destructor, when it really ought to have a virtual one. */ |
747 | ||
748 | extern int warn_nonvdtor; | |
749 | ||
da7d8304 | 750 | /* Nonzero means warn when the compiler will reorder code. */ |
4078b403 NB |
751 | |
752 | extern int warn_reorder; | |
753 | ||
da7d8304 | 754 | /* Nonzero means warn when synthesis behavior differs from Cfront's. */ |
4078b403 NB |
755 | |
756 | extern int warn_synth; | |
757 | ||
da7d8304 | 758 | /* Nonzero means warn when we convert a pointer to member function |
4078b403 NB |
759 | into a pointer to (void or function). */ |
760 | ||
761 | extern int warn_pmf2ptr; | |
762 | ||
763 | /* Nonzero means warn about violation of some Effective C++ style rules. */ | |
764 | ||
765 | extern int warn_ecpp; | |
766 | ||
767 | /* Nonzero means warn where overload resolution chooses a promotion from | |
768 | unsigned to signed over a conversion to an unsigned of the same size. */ | |
769 | ||
770 | extern int warn_sign_promo; | |
771 | ||
772 | /* Nonzero means warn when an old-style cast is used. */ | |
773 | ||
774 | extern int warn_old_style_cast; | |
775 | ||
776 | /* Nonzero means warn when non-templatized friend functions are | |
777 | declared within a template */ | |
778 | ||
779 | extern int warn_nontemplate_friend; | |
780 | ||
781 | /* Nonzero means complain about deprecated features. */ | |
782 | ||
783 | extern int warn_deprecated; | |
784 | ||
785 | /* Maximum template instantiation depth. This limit is rather | |
786 | arbitrary, but it exists to limit the time it takes to notice | |
787 | infinite template instantiations. */ | |
788 | ||
789 | extern int max_tinst_depth; | |
ab76ca54 | 790 | |
25587e40 AO |
791 | /* Nonzero means the expression being parsed will never be evaluated. |
792 | This is a count, since unevaluated expressions can nest. */ | |
793 | ||
794 | extern int skip_evaluation; | |
795 | ||
ab76ca54 MM |
796 | /* C types are partitioned into three subsets: object, function, and |
797 | incomplete types. */ | |
798 | #define C_TYPE_OBJECT_P(type) \ | |
799 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) | |
800 | ||
801 | #define C_TYPE_INCOMPLETE_P(type) \ | |
802 | (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) | |
803 | ||
804 | #define C_TYPE_FUNCTION_P(type) \ | |
805 | (TREE_CODE (type) == FUNCTION_TYPE) | |
806 | ||
807 | /* For convenience we define a single macro to identify the class of | |
808 | object or incomplete types. */ | |
809 | #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ | |
810 | (!C_TYPE_FUNCTION_P (type)) | |
811 | ||
812 | /* Record in each node resulting from a binary operator | |
813 | what operator was specified for it. */ | |
814 | #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) | |
815 | ||
349ae713 NB |
816 | /* Attribute table common to the C front ends. */ |
817 | extern const struct attribute_spec c_common_attribute_table[]; | |
818 | extern const struct attribute_spec c_common_format_attribute_table[]; | |
819 | ||
0ba8a114 | 820 | /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. |
2ce07e2d NS |
821 | ID is the identifier to use, NAME is the string. |
822 | TYPE_DEP indicates whether it depends on type of the function or not | |
823 | (i.e. __PRETTY_FUNCTION__). */ | |
824 | ||
35b1a6fa AJ |
825 | extern tree (*make_fname_decl) (tree, int); |
826 | ||
827 | extern tree identifier_global_value (tree); | |
828 | extern void record_builtin_type (enum rid, const char *, tree); | |
829 | extern tree build_void_list_node (void); | |
830 | extern void start_fname_decls (void); | |
831 | extern void finish_fname_decls (void); | |
832 | extern const char *fname_as_string (int); | |
833 | extern tree fname_decl (unsigned, tree); | |
35b1a6fa AJ |
834 | |
835 | extern void check_function_arguments (tree, tree); | |
836 | extern void check_function_arguments_recurse (void (*) | |
837 | (void *, tree, | |
838 | unsigned HOST_WIDE_INT), | |
839 | void *, tree, | |
840 | unsigned HOST_WIDE_INT); | |
841 | extern void check_function_format (int *, tree, tree); | |
842 | extern void set_Wformat (int); | |
843 | extern tree handle_format_attribute (tree *, tree, tree, int, bool *); | |
844 | extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); | |
2772ef3e | 845 | extern int c_common_handle_option (size_t code, const char *arg, int value); |
cb66e385 | 846 | extern bool c_common_missing_argument (const char *opt, size_t code); |
35b1a6fa AJ |
847 | extern tree c_common_type_for_mode (enum machine_mode, int); |
848 | extern tree c_common_type_for_size (unsigned int, int); | |
849 | extern tree c_common_unsigned_type (tree); | |
850 | extern tree c_common_signed_type (tree); | |
851 | extern tree c_common_signed_or_unsigned_type (int, tree); | |
852 | extern tree c_common_truthvalue_conversion (tree); | |
853 | extern void c_apply_type_quals_to_decl (int, tree); | |
854 | extern tree c_sizeof_or_alignof_type (tree, enum tree_code, int); | |
855 | extern tree c_alignof_expr (tree); | |
7f4edbcb BS |
856 | /* Print an error message for invalid operands to arith operation CODE. |
857 | NOP_EXPR is used as a special case (see truthvalue_conversion). */ | |
35b1a6fa | 858 | extern void binary_op_error (enum tree_code); |
fa72b064 GDR |
859 | #define my_friendly_assert(EXP, N) (void) \ |
860 | (((EXP) == 0) ? (fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0) : 0) | |
861 | ||
7f4edbcb | 862 | /* Validate the expression after `case' and apply default promotions. */ |
35b1a6fa AJ |
863 | extern tree check_case_value (tree); |
864 | extern tree fix_string_type (tree); | |
b84a3874 | 865 | struct varray_head_tag; |
35b1a6fa AJ |
866 | extern void constant_expression_warning (tree); |
867 | extern tree convert_and_check (tree, tree); | |
868 | extern void overflow_warning (tree); | |
869 | extern void unsigned_conversion_warning (tree, tree); | |
ab76ca54 | 870 | |
ea793912 GDR |
871 | #define c_sizeof(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 1) |
872 | #define c_alignof(T) c_sizeof_or_alignof_type (T, ALIGNOF_EXPR, 1) | |
7f4edbcb BS |
873 | |
874 | /* Subroutine of build_binary_op, used for comparison operations. | |
875 | See if the operands have both been converted from subword integer types | |
876 | and, if so, perhaps change them both back to their original type. */ | |
35b1a6fa | 877 | extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); |
7f4edbcb | 878 | |
35b1a6fa AJ |
879 | extern tree pointer_int_sum (enum tree_code, tree, tree); |
880 | extern unsigned int min_precision (tree, int); | |
50e60bc3 ZW |
881 | |
882 | /* Add qualifiers to a type, in the fashion for C. */ | |
35b1a6fa | 883 | extern tree c_build_qualified_type (tree, int); |
50e60bc3 | 884 | |
7f4edbcb BS |
885 | /* Build tree nodes and builtin functions common to both C and C++ language |
886 | frontends. */ | |
35b1a6fa | 887 | extern void c_common_nodes_and_builtins (void); |
d3707adb | 888 | |
35b1a6fa | 889 | extern void disable_builtin_function (const char *); |
7d14c755 | 890 | |
35b1a6fa | 891 | extern tree build_va_arg (tree, tree); |
7e8176d7 | 892 | |
b86f6cd9 | 893 | extern unsigned int c_common_init_options (unsigned int, const char **); |
35b1a6fa AJ |
894 | extern bool c_common_post_options (const char **); |
895 | extern bool c_common_init (void); | |
896 | extern void c_common_finish (void); | |
897 | extern void c_common_parse_file (int); | |
898 | extern HOST_WIDE_INT c_common_get_alias_set (tree); | |
9649812a | 899 | extern void c_register_builtin_type (tree, const char*); |
35b1a6fa AJ |
900 | extern bool c_promoting_integer_type_p (tree); |
901 | extern int self_promoting_args_p (tree); | |
902 | extern tree strip_array_types (tree); | |
12ea3302 | 903 | extern tree strip_pointer_operator (tree); |
d7e7759d | 904 | |
d1bd0ded GK |
905 | /* This is the basic parsing function. */ |
906 | extern void c_parse_file (void); | |
907 | /* This is misnamed, it actually performs end-of-compilation processing. */ | |
908 | extern void finish_file (void); | |
909 | ||
ae499cce MM |
910 | /* These macros provide convenient access to the various _STMT nodes. */ |
911 | ||
912 | /* Nonzero if this statement should be considered a full-expression, | |
913 | i.e., if temporaries created during this statement should have | |
914 | their destructors run at the end of this statement. (In C, this | |
915 | will always be false, since there are no destructors.) */ | |
916 | #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE)) | |
35b1567d | 917 | |
325c3691 RH |
918 | /* Nonzero if a given STATEMENT_LIST represents the outermost binding |
919 | if a statement expression. */ | |
920 | #define STATEMENT_LIST_STMT_EXPR(NODE) \ | |
921 | TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) | |
922 | ||
ff7cc307 | 923 | /* WHILE_STMT accessors. These give access to the condition of the |
2ba84f36 | 924 | while statement and the body of the while statement, respectively. */ |
d7e7759d BC |
925 | #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) |
926 | #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) | |
35b1567d BC |
927 | |
928 | /* DO_STMT accessors. These give access to the condition of the do | |
2ba84f36 | 929 | statement and the body of the do statement, respectively. */ |
d7e7759d BC |
930 | #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) |
931 | #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) | |
35b1567d | 932 | |
0d97bf4c JM |
933 | /* RETURN_STMT accessors. These give the expression associated with a |
934 | return statement, and whether it should be ignored when expanding | |
935 | (as opposed to inlining). */ | |
d65b1d77 | 936 | #define RETURN_STMT_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0) |
35b1567d BC |
937 | |
938 | /* EXPR_STMT accessor. This gives the expression associated with an | |
2ba84f36 | 939 | expression statement. */ |
d7e7759d | 940 | #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0) |
35b1567d BC |
941 | |
942 | /* FOR_STMT accessors. These give access to the init statement, | |
943 | condition, update expression, and body of the for statement, | |
2ba84f36 | 944 | respectively. */ |
d7e7759d BC |
945 | #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) |
946 | #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) | |
947 | #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) | |
948 | #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) | |
35b1567d | 949 | |
6f9fdf4d | 950 | #define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) |
35b1567d | 951 | |
35b1567d | 952 | /* DECL_STMT accessor. This gives access to the DECL associated with |
2ba84f36 | 953 | the given declaration statement. */ |
d7e7759d | 954 | #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0) |
35b1567d | 955 | |
2ba84f36 | 956 | /* STMT_EXPR accessor. */ |
d7e7759d | 957 | #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0) |
35b1567d | 958 | |
b2123dc0 MM |
959 | /* Nonzero if this statement-expression does not have an associated scope. */ |
960 | #define STMT_EXPR_NO_SCOPE(NODE) \ | |
961 | TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE)) | |
962 | ||
8d37a5c0 JM |
963 | /* COMPOUND_LITERAL_EXPR accessors. */ |
964 | #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \ | |
db3acfa5 | 965 | TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) |
8d37a5c0 JM |
966 | #define COMPOUND_LITERAL_EXPR_DECL(NODE) \ |
967 | DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE)) | |
db3acfa5 | 968 | |
c7d87c0a BC |
969 | #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, |
970 | ||
971 | enum c_tree_code { | |
972 | C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE, | |
973 | #include "c-common.def" | |
974 | LAST_C_TREE_CODE | |
975 | }; | |
976 | ||
977 | #undef DEFTREECODE | |
978 | ||
009ed910 | 979 | #define c_common_stmt_codes \ |
5a508662 | 980 | EXPR_STMT, DECL_STMT, FOR_STMT, \ |
009ed910 | 981 | WHILE_STMT, DO_STMT, RETURN_STMT, \ |
8c161995 | 982 | BREAK_STMT, CONTINUE_STMT, SWITCH_STMT |
009ed910 SB |
983 | |
984 | /* TRUE if a code represents a statement. The front end init | |
985 | langhook should take care of initialization of this array. */ | |
986 | extern bool statement_code_p[MAX_TREE_CODES]; | |
987 | ||
988 | #define STATEMENT_CODE_P(CODE) statement_code_p[(int) (CODE)] | |
989 | ||
990 | #define INIT_STATEMENT_CODES(STMT_CODES) \ | |
991 | do { \ | |
992 | unsigned int i; \ | |
993 | memset (&statement_code_p, 0, sizeof (statement_code_p)); \ | |
994 | for (i = 0; i < ARRAY_SIZE (STMT_CODES); i++) \ | |
995 | statement_code_p[STMT_CODES[i]] = true; \ | |
996 | } while (0) | |
997 | ||
35b1a6fa AJ |
998 | extern int stmts_are_full_exprs_p (void); |
999 | extern int anon_aggr_type_p (tree); | |
f2c5f623 BC |
1000 | |
1001 | /* For a VAR_DECL that is an anonymous union, these are the various | |
1002 | sub-variables that make up the anonymous union. */ | |
1003 | #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE)) | |
1004 | ||
0a7394bc MM |
1005 | /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ |
1006 | #define DECL_C_BIT_FIELD(NODE) \ | |
1007 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) | |
1008 | #define SET_DECL_C_BIT_FIELD(NODE) \ | |
1009 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) | |
1010 | #define CLEAR_DECL_C_BIT_FIELD(NODE) \ | |
1011 | (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) | |
1012 | ||
35b1a6fa AJ |
1013 | extern void emit_local_var (tree); |
1014 | extern void make_rtl_for_local_static (tree); | |
35b1a6fa AJ |
1015 | extern tree c_expand_return (tree); |
1016 | extern tree do_case (tree, tree); | |
1017 | extern tree build_stmt (enum tree_code, ...); | |
1018 | extern tree build_case_label (tree, tree, tree); | |
1019 | extern tree build_continue_stmt (void); | |
1020 | extern tree build_break_stmt (void); | |
1021 | extern tree build_return_stmt (tree); | |
f2c5f623 | 1022 | |
177560b2 | 1023 | extern void c_expand_asm_operands (tree, tree, tree, tree, int, location_t); |
ab76ca54 MM |
1024 | |
1025 | /* These functions must be defined by each front-end which implements | |
1026 | a variant of the C language. They are used in c-common.c. */ | |
1027 | ||
35b1a6fa AJ |
1028 | extern tree build_unary_op (enum tree_code, tree, int); |
1029 | extern tree build_binary_op (enum tree_code, tree, tree, int); | |
1030 | extern int lvalue_p (tree); | |
1031 | extern tree default_conversion (tree); | |
ab76ca54 MM |
1032 | |
1033 | /* Given two integer or real types, return the type for their sum. | |
1034 | Given two compatible ANSI C types, returns the merged type. */ | |
1035 | ||
35b1a6fa | 1036 | extern tree common_type (tree, tree); |
44835fdd | 1037 | |
35b1a6fa | 1038 | extern tree expand_tree_builtin (tree, tree, tree); |
0e5921e8 | 1039 | |
35b1a6fa | 1040 | extern tree decl_constant_value (tree); |
56cb9733 | 1041 | |
19552aa5 | 1042 | /* Handle increment and decrement of boolean types. */ |
35b1a6fa | 1043 | extern tree boolean_increment (enum tree_code, tree); |
19552aa5 | 1044 | |
0e5921e8 ZW |
1045 | /* Hook currently used only by the C++ front end to reset internal state |
1046 | after entering or leaving a header file. */ | |
35b1a6fa | 1047 | extern void extract_interface_info (void); |
0e5921e8 | 1048 | |
35b1a6fa | 1049 | extern int case_compare (splay_tree_key, splay_tree_key); |
8f17b5c5 | 1050 | |
35b1a6fa | 1051 | extern tree c_add_case_label (splay_tree, tree, tree, tree); |
8f17b5c5 | 1052 | |
6de9cd9a DN |
1053 | extern void c_do_switch_warnings (splay_tree, tree); |
1054 | ||
35b1a6fa | 1055 | extern tree build_function_call (tree, tree); |
c70eaeaf | 1056 | |
35b1a6fa | 1057 | extern tree finish_label_address_expr (tree); |
15b732b2 NB |
1058 | |
1059 | /* Same function prototype, but the C and C++ front ends have | |
1060 | different implementations. Used in c-common.c. */ | |
35b1a6fa | 1061 | extern tree lookup_label (tree); |
15b732b2 | 1062 | |
cc27e657 PB |
1063 | extern int vector_types_convertible_p (tree t1, tree t2); |
1064 | ||
0fab64a3 | 1065 | extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); |
8f17b5c5 | 1066 | |
35b1a6fa | 1067 | extern int c_safe_from_p (rtx, tree); |
8f17b5c5 | 1068 | |
35b1a6fa | 1069 | extern int c_staticp (tree); |
db3acfa5 | 1070 | |
35b1a6fa | 1071 | extern int c_common_unsafe_for_reeval (tree); |
3fe30ff6 | 1072 | |
35b1a6fa | 1073 | extern void init_c_lex (void); |
81a75f0f | 1074 | |
35b1a6fa | 1075 | extern void c_cpp_builtins (cpp_reader *); |
76c3e73e | 1076 | |
731e8b38 MM |
1077 | /* Positive if an implicit `extern "C"' scope has just been entered; |
1078 | negative if such a scope has just been exited. */ | |
7876228d | 1079 | extern GTY(()) int pending_lang_change; |
731e8b38 | 1080 | |
0e5921e8 ZW |
1081 | /* Information recorded about each file examined during compilation. */ |
1082 | ||
1083 | struct c_fileinfo | |
1084 | { | |
1085 | int time; /* Time spent in the file. */ | |
1086 | short interface_only; /* Flags - used only by C++ */ | |
1087 | short interface_unknown; | |
1088 | }; | |
1089 | ||
35b1a6fa AJ |
1090 | struct c_fileinfo *get_fileinfo (const char *); |
1091 | extern void dump_time_statistics (void); | |
1092 | ||
1093 | extern bool c_dump_tree (void *, tree); | |
1094 | ||
6de9cd9a | 1095 | extern tree c_walk_subtrees (tree*, int*, walk_tree_fn, void*, void*); |
6de9cd9a DN |
1096 | |
1097 | extern void c_warn_unused_result (tree *); | |
1098 | ||
3a5b9284 RH |
1099 | extern void verify_sequence_points (tree); |
1100 | ||
7c34ced1 | 1101 | /* In c-gimplify.c */ |
6de9cd9a | 1102 | extern void c_genericize (tree); |
7c34ced1 | 1103 | extern int c_gimplify_expr (tree *, tree *, tree *); |
325c3691 | 1104 | extern tree c_build_bind_expr (tree, tree); |
6de9cd9a | 1105 | |
35b1a6fa AJ |
1106 | extern void pch_init (void); |
1107 | extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); | |
1108 | extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, | |
1109 | const char *orig); | |
1110 | extern void c_common_write_pch (void); | |
18c81520 | 1111 | extern void c_common_no_more_pch (void); |
35b1a6fa AJ |
1112 | extern void builtin_define_with_value (const char *, const char *, int); |
1113 | extern void c_stddef_cpp_builtins (void); | |
1114 | extern void fe_file_change (const struct line_map *); | |
4bb8ca28 | 1115 | extern void c_parse_error (const char *, enum cpp_ttype, tree); |
9d10c9a9 | 1116 | |
264fa2db ZL |
1117 | /* The following have been moved here from c-tree.h, since they're needed |
1118 | in the ObjC++ world, too. What is more, stub-objc.c could use a few | |
1119 | prototypes. */ | |
1120 | extern tree lookup_interface (tree); | |
1121 | extern tree is_class_name (tree); | |
1122 | extern tree objc_is_object_ptr (tree); | |
1123 | extern void objc_check_decl (tree); | |
1124 | extern int objc_comptypes (tree, tree, int); | |
1125 | extern tree objc_message_selector (void); | |
1126 | extern tree lookup_objc_ivar (tree); | |
1127 | extern void *get_current_scope (void); | |
1128 | extern void objc_mark_locals_volatile (void *); | |
325c3691 | 1129 | extern void objc_clear_super_receiver (void); |
7a3ea201 | 1130 | extern int objc_is_public (tree, tree); |
264fa2db | 1131 | |
9d10c9a9 | 1132 | /* In c-ppoutput.c */ |
35b1a6fa AJ |
1133 | extern void init_pp_output (FILE *); |
1134 | extern void preprocess_file (cpp_reader *); | |
1135 | extern void pp_file_change (const struct line_map *); | |
8e9ea4d7 | 1136 | extern void pp_dir_change (cpp_reader *, const char *); |
17211ab5 | 1137 | |
88657302 | 1138 | #endif /* ! GCC_C_COMMON_H */ |