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1 : /* Definitions for c-common.cc.
2 : Copyright (C) 1987-2026 Free Software Foundation, Inc.
3 :
4 : This file is part of GCC.
5 :
6 : GCC is free software; you can redistribute it and/or modify it under
7 : the terms of the GNU General Public License as published by the Free
8 : Software Foundation; either version 3, or (at your option) any later
9 : version.
10 :
11 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 : for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with GCC; see the file COPYING3. If not see
18 : <http://www.gnu.org/licenses/>. */
19 :
20 : #ifndef GCC_C_COMMON_H
21 : #define GCC_C_COMMON_H
22 :
23 : #include "splay-tree.h"
24 : #include "cpplib.h"
25 : #include "alias.h"
26 : #include "tree.h"
27 : #include "fold-const.h"
28 : #include "wide-int-bitmask.h"
29 :
30 : /* In order for the format checking to accept the C frontend
31 : diagnostic framework extensions, you must include this file before
32 : diagnostic-core.h, not after. The C front end formats are a subset of those
33 : for C++, so they are the appropriate set to use in common code;
34 : cp-tree.h overrides this for C++. */
35 : #if defined(GCC_DIAGNOSTIC_CORE_H)
36 : #error \
37 : In order for the format checking to accept the C front end diagnostic \
38 : framework extensions, you must include this file before diagnostic-core.h \
39 : never after.
40 : #endif
41 : #ifndef GCC_DIAG_STYLE
42 : #define GCC_DIAG_STYLE __gcc_cdiag__
43 : #endif
44 : #include "diagnostic-core.h"
45 :
46 : /* Usage of TREE_LANG_FLAG_?:
47 : 0: IDENTIFIER_MARKED (used by search routines).
48 : C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
49 : 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
50 : STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
51 : C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
52 : 2: unused
53 : 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
54 : 4: unused
55 : */
56 :
57 : /* Reserved identifiers. This is the union of all the keywords for C,
58 : C++, and Objective-C. All the type modifiers have to be in one
59 : block at the beginning, because they are used as mask bits. There
60 : are 28 type modifiers; if we add many more we will have to redesign
61 : the mask mechanism. */
62 :
63 : enum rid
64 : {
65 : /* Modifiers: */
66 : /* C, in empirical order of frequency. */
67 : RID_STATIC = 0,
68 : RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
69 : RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
70 : RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
71 : RID_NORETURN, RID_ATOMIC,
72 :
73 : /* C extensions */
74 : RID_COMPLEX, RID_THREAD, RID_SAT,
75 :
76 : /* C++ */
77 : RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
78 :
79 : /* ObjC ("PQ" reserved words - they do not appear after a '@' and
80 : are keywords only in specific contexts) */
81 : RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
82 :
83 : /* ObjC ("PATTR" reserved words - they do not appear after a '@'
84 : and are keywords only as property attributes) */
85 : RID_GETTER, RID_SETTER,
86 : RID_READONLY, RID_READWRITE,
87 : RID_ASSIGN, RID_RETAIN, RID_COPY,
88 : RID_PROPATOMIC, RID_NONATOMIC,
89 :
90 : /* ObjC nullability support keywords that also can appear in the
91 : property attribute context. These values should remain contiguous
92 : with the other property attributes. */
93 : RID_NULL_UNSPECIFIED, RID_NULLABLE, RID_NONNULL, RID_NULL_RESETTABLE,
94 :
95 : /* C (reserved and imaginary types not implemented, so any use is a
96 : syntax error) */
97 : RID_IMAGINARY,
98 :
99 : /* C */
100 : RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
101 : RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
102 : RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
103 : RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
104 : RID_SIZEOF, RID_BITINT,
105 :
106 : /* C extensions */
107 : RID_ASM, RID_TYPEOF, RID_TYPEOF_UNQUAL, RID_ALIGNOF, RID_ATTRIBUTE,
108 : RID_COUNTOF, RID_MAXOF, RID_MINOF,
109 : RID_C23_VA_START, RID_VA_ARG,
110 : RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
111 : RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
112 : RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH,
113 : RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER, RID_BUILTIN_STDC,
114 : RID_BUILTIN_COUNTED_BY_REF, RID_BUILTIN_BSWAPG,
115 : RID_BUILTIN_BITREVERSEG,
116 : RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, RID_DFLOAT64X,
117 :
118 : /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
119 : RID_FLOAT16,
120 : RID_FLOATN_NX_FIRST = RID_FLOAT16,
121 : RID_FLOAT32,
122 : RID_FLOAT64,
123 : RID_FLOAT128,
124 : RID_FLOAT32X,
125 : RID_FLOAT64X,
126 : RID_FLOAT128X,
127 : #define CASE_RID_FLOATN_NX \
128 : case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
129 : case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
130 :
131 : RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN,
132 :
133 : /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
134 : RID_GIMPLE,
135 :
136 : /* "__PHI", for parsing PHI function in GIMPLE FE. */
137 : RID_PHI,
138 :
139 : /* "__RTL", for the RTL-parsing extension to the C frontend. */
140 : RID_RTL,
141 :
142 : /* C11 */
143 : RID_ALIGNAS, RID_GENERIC,
144 :
145 : /* This means to warn that this is a C++ keyword, and then treat it
146 : as a normal identifier. */
147 : RID_CXX_COMPAT_WARN,
148 :
149 : /* GNU transactional memory extension */
150 : RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
151 :
152 : /* Too many ways of getting the name of a function as a string */
153 : RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
154 :
155 : /* C++ (some of these are keywords in Objective-C as well, but only
156 : if they appear after a '@') */
157 : RID_BOOL, RID_WCHAR, RID_CLASS,
158 : RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
159 : RID_TEMPLATE, RID_NULL, RID_CATCH,
160 : RID_DELETE, RID_FALSE, RID_NAMESPACE,
161 : RID_NEW, RID_OFFSETOF, RID_OPERATOR,
162 : RID_THIS, RID_THROW, RID_TRUE,
163 : RID_TRY, RID_TYPENAME, RID_TYPEID,
164 : RID_USING, RID_CHAR16, RID_CHAR32,
165 :
166 : /* casts */
167 : RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
168 :
169 : /* C++ extensions */
170 : RID_ADDRESSOF,
171 : RID_BUILTIN_LAUNDER,
172 : RID_BUILTIN_BIT_CAST,
173 : RID_BUILTIN_OPERATOR_NEW, RID_BUILTIN_OPERATOR_DELETE,
174 :
175 : /* C++11 */
176 : RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
177 :
178 : /* C++20 */
179 : RID_CONSTINIT, RID_CONSTEVAL,
180 :
181 : /* char8_t */
182 : RID_CHAR8,
183 :
184 : /* C++ concepts */
185 : RID_CONCEPT, RID_REQUIRES,
186 :
187 : /* C++ modules. */
188 : RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */
189 :
190 : /* C++ coroutines */
191 : RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN,
192 :
193 : /* C++26 */
194 : RID_CONTASSERT,
195 :
196 : /* C++ transactional memory. */
197 : RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED,
198 :
199 : /* Objective-C ("AT" reserved words - they are only keywords when
200 : they follow '@') */
201 : RID_AT_ENCODE, RID_AT_END,
202 : RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
203 : RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
204 : RID_AT_PROTOCOL, RID_AT_SELECTOR,
205 : RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
206 : RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
207 : RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
208 : RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
209 : RID_AT_INTERFACE,
210 : RID_AT_IMPLEMENTATION,
211 :
212 : /* OpenMP */
213 : RID_OMP_ALL_MEMORY,
214 :
215 : /* Named address support, mapping the keyword to a particular named address
216 : number. Named address space 0 is reserved for the generic address. If
217 : there are more than 254 named addresses, the addr_space_t type will need
218 : to be grown from an unsigned char to unsigned short. */
219 : RID_ADDR_SPACE_0, /* generic address */
220 : RID_ADDR_SPACE_1,
221 : RID_ADDR_SPACE_2,
222 : RID_ADDR_SPACE_3,
223 : RID_ADDR_SPACE_4,
224 : RID_ADDR_SPACE_5,
225 : RID_ADDR_SPACE_6,
226 : RID_ADDR_SPACE_7,
227 : RID_ADDR_SPACE_8,
228 : RID_ADDR_SPACE_9,
229 : RID_ADDR_SPACE_10,
230 : RID_ADDR_SPACE_11,
231 : RID_ADDR_SPACE_12,
232 : RID_ADDR_SPACE_13,
233 : RID_ADDR_SPACE_14,
234 : RID_ADDR_SPACE_15,
235 :
236 : RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
237 : RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
238 :
239 : /* __intN keywords. The _N_M here doesn't correspond to the intN
240 : in the keyword; use the bitsize in int_n_t_data_t[M] for that.
241 : For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
242 : is for __int13. */
243 :
244 : /* Note that the range to use is RID_FIRST_INT_N through
245 : RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of
246 : all RID_INT_N_* in a case statement. */
247 :
248 : RID_INT_N_0,
249 : RID_INT_N_1,
250 : RID_INT_N_2,
251 : RID_INT_N_3,
252 :
253 : RID_FIRST_INT_N = RID_INT_N_0,
254 : RID_LAST_INT_N = RID_INT_N_3,
255 :
256 : RID_MAX,
257 :
258 : RID_FIRST_MODIFIER = RID_STATIC,
259 : RID_LAST_MODIFIER = RID_ONEWAY,
260 :
261 : RID_FIRST_CXX11 = RID_CONSTEXPR,
262 : RID_LAST_CXX11 = RID_STATIC_ASSERT,
263 : RID_FIRST_CXX20 = RID_CONSTINIT,
264 : RID_LAST_CXX20 = RID_CO_RETURN,
265 : RID_FIRST_CXX26 = RID_CONTASSERT,
266 : RID_LAST_CXX26 = RID_CONTASSERT,
267 : RID_FIRST_AT = RID_AT_ENCODE,
268 : RID_LAST_AT = RID_AT_IMPLEMENTATION,
269 : RID_FIRST_PQ = RID_IN,
270 : RID_LAST_PQ = RID_ONEWAY,
271 : RID_FIRST_PATTR = RID_GETTER,
272 : RID_LAST_PATTR = RID_NULL_RESETTABLE
273 : };
274 :
275 : #define OBJC_IS_AT_KEYWORD(rid) \
276 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
277 : (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
278 :
279 : #define OBJC_IS_PQ_KEYWORD(rid) \
280 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
281 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
282 :
283 : /* Keywords permitted in an @property attribute context. */
284 : #define OBJC_IS_PATTR_KEYWORD(rid) \
285 : ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
286 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
287 : || rid == RID_CLASS)
288 :
289 : /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
290 : 'class') which are shared in a subtle way between Objective-C and
291 : C++. When the lexer is lexing in Objective-C/Objective-C++, if it
292 : finds '@' followed by one of these identifiers (eg, '@class'), it
293 : recognizes the whole as an Objective-C keyword. If the identifier
294 : is found elsewhere, it follows the rules of the C/C++ language.
295 : */
296 : #define OBJC_IS_CXX_KEYWORD(rid) \
297 : (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
298 : || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
299 : || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
300 :
301 : /* The elements of `ridpointers' are identifier nodes for the reserved
302 : type names and storage classes. It is indexed by a RID_... value. */
303 : extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
304 :
305 : /* Standard named or nameless data types of the C compiler. */
306 :
307 : enum c_tree_index
308 : {
309 : CTI_CHAR8_TYPE,
310 : CTI_CHAR16_TYPE,
311 : CTI_CHAR32_TYPE,
312 : CTI_WCHAR_TYPE,
313 : CTI_UNDERLYING_WCHAR_TYPE,
314 : CTI_WINT_TYPE,
315 : CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
316 : CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
317 : CTI_INTMAX_TYPE,
318 : CTI_UINTMAX_TYPE,
319 : CTI_WIDEST_INT_LIT_TYPE,
320 : CTI_WIDEST_UINT_LIT_TYPE,
321 :
322 : /* Types for <stdint.h>, that may not be defined on all
323 : targets. */
324 : CTI_SIG_ATOMIC_TYPE,
325 : CTI_INT8_TYPE,
326 : CTI_INT16_TYPE,
327 : CTI_INT32_TYPE,
328 : CTI_INT64_TYPE,
329 : CTI_UINT8_TYPE,
330 : CTI_UINT16_TYPE,
331 : CTI_UINT32_TYPE,
332 : CTI_UINT64_TYPE,
333 : CTI_INT_LEAST8_TYPE,
334 : CTI_INT_LEAST16_TYPE,
335 : CTI_INT_LEAST32_TYPE,
336 : CTI_INT_LEAST64_TYPE,
337 : CTI_UINT_LEAST8_TYPE,
338 : CTI_UINT_LEAST16_TYPE,
339 : CTI_UINT_LEAST32_TYPE,
340 : CTI_UINT_LEAST64_TYPE,
341 : CTI_INT_FAST8_TYPE,
342 : CTI_INT_FAST16_TYPE,
343 : CTI_INT_FAST32_TYPE,
344 : CTI_INT_FAST64_TYPE,
345 : CTI_UINT_FAST8_TYPE,
346 : CTI_UINT_FAST16_TYPE,
347 : CTI_UINT_FAST32_TYPE,
348 : CTI_UINT_FAST64_TYPE,
349 : CTI_INTPTR_TYPE,
350 : CTI_UINTPTR_TYPE,
351 :
352 : CTI_CHAR_ARRAY_TYPE,
353 : CTI_CHAR8_ARRAY_TYPE,
354 : CTI_CHAR16_ARRAY_TYPE,
355 : CTI_CHAR32_ARRAY_TYPE,
356 : CTI_WCHAR_ARRAY_TYPE,
357 : CTI_STRING_TYPE,
358 : CTI_CONST_STRING_TYPE,
359 :
360 : /* Type for boolean expressions (bool in C++, int in C). */
361 : CTI_TRUTHVALUE_TYPE,
362 : CTI_TRUTHVALUE_TRUE,
363 : CTI_TRUTHVALUE_FALSE,
364 :
365 : CTI_DEFAULT_FUNCTION_TYPE,
366 :
367 : CTI_NULL,
368 : CTI_NULLPTR,
369 : CTI_NULLPTR_TYPE,
370 :
371 : /* These are not types, but we have to look them up all the time. */
372 : CTI_FUNCTION_NAME_DECL,
373 : CTI_PRETTY_FUNCTION_NAME_DECL,
374 : CTI_C99_FUNCTION_NAME_DECL,
375 :
376 : CTI_MODULE_HWM,
377 : /* Below here entities change during compilation. */
378 :
379 : CTI_SAVED_FUNCTION_NAME_DECLS,
380 :
381 : CTI_MAX
382 : };
383 :
384 : #define C_CPP_HASHNODE(id) \
385 : (&(((struct c_common_identifier *) (id))->node))
386 : #define C_RID_CODE(id) \
387 : ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
388 : #define C_SET_RID_CODE(id, code) \
389 : (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
390 :
391 : /* Identifier part common to the C front ends. Inherits from
392 : tree_identifier, despite appearances. */
393 : struct GTY(()) c_common_identifier {
394 : struct tree_common common;
395 : struct cpp_hashnode node;
396 : };
397 :
398 : /* An entry in the reserved keyword table. */
399 :
400 : struct c_common_resword
401 : {
402 : const char *const word;
403 : ENUM_BITFIELD(rid) const rid : 16;
404 : const unsigned int disable : 32;
405 : };
406 :
407 : /* Mode used to build pointers (VOIDmode means ptr_mode). */
408 :
409 : extern machine_mode c_default_pointer_mode;
410 :
411 : /* Extra cpp_ttype values for C++. */
412 :
413 : /* A token type for template-ids. If a template-id is processed while
414 : parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
415 : the value of the CPP_TEMPLATE_ID is whatever was returned by
416 : cp_parser_template_id. */
417 : #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
418 :
419 : /* A token type for nested-name-specifiers. If a
420 : nested-name-specifier is processed while parsing tentatively, it is
421 : replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
422 : CPP_NESTED_NAME_SPECIFIER is whatever was returned by
423 : cp_parser_nested_name_specifier_opt. */
424 : #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
425 :
426 : /* A token type for pre-parsed C++0x decltype. */
427 : #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
428 :
429 : /* A token type for pre-parsed primary-expression (lambda- or statement-). */
430 : #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
431 :
432 : /* The number of token types, including C++-specific ones. */
433 : #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
434 :
435 : /* Disable mask. Keywords are disabled if (reswords[i].disable &
436 : mask) is _true_. Thus for keywords which are present in all
437 : languages the disable field is zero. */
438 :
439 : #define D_CONLY 0x0001 /* C only (not in C++). */
440 : #define D_CXXONLY 0x0002 /* C++ only (not in C). */
441 : #define D_C99 0x0004 /* In C, C99 only. */
442 : #define D_C23 0x0008 /* In C, C23 only. */
443 : #define D_CXX11 0x0010 /* In C++, C++11 only. */
444 : #define D_EXT 0x0020 /* GCC extension. */
445 : #define D_EXT89 0x0040 /* GCC extension incorporated in C99. */
446 : #define D_EXT11 0x0080 /* GCC extension incorporated in C23. */
447 : #define D_ASM 0x0100 /* Disabled by -fno-asm. */
448 : #define D_OBJC 0x0200 /* In Objective C and neither C nor C++. */
449 : #define D_CXX_OBJC 0x0400 /* In Objective C, and C++, but not C. */
450 : #define D_CXXWARN 0x0800 /* In C warn with -Wcxx-compat. */
451 : #define D_CXX_CONCEPTS 0x1000 /* In C++, only with concepts. */
452 : #define D_TRANSMEM 0x2000 /* C++ transactional memory TS. */
453 : #define D_CXX_CHAR8_T 0x4000 /* In C++, only with -fchar8_t. */
454 : #define D_CXX20 0x8000 /* In C++, C++20 only. */
455 : #define D_CXX_COROUTINES 0x10000 /* In C++, only with coroutines. */
456 : #define D_CXX_MODULES 0x20000 /* In C++, only with modules. */
457 : #define D_CXX26 0x40000 /* In C++, C++26 only. */
458 :
459 : #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
460 : #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
461 : #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
462 : #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
463 :
464 : /* The reserved keyword table. */
465 : extern const struct c_common_resword c_common_reswords[];
466 :
467 : /* The number of items in the reserved keyword table. */
468 : extern const unsigned int num_c_common_reswords;
469 :
470 : #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
471 : #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
472 : #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
473 : #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
474 : #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
475 : #define wint_type_node c_global_trees[CTI_WINT_TYPE]
476 : #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
477 : #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
478 : #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
479 : #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
480 : #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
481 : #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
482 :
483 : #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
484 : #define int8_type_node c_global_trees[CTI_INT8_TYPE]
485 : #define int16_type_node c_global_trees[CTI_INT16_TYPE]
486 : #define int32_type_node c_global_trees[CTI_INT32_TYPE]
487 : #define int64_type_node c_global_trees[CTI_INT64_TYPE]
488 : #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
489 : #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
490 : #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
491 : #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
492 : #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
493 : #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
494 : #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
495 : #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
496 : #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
497 : #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
498 : #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
499 : #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
500 : #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
501 : #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
502 : #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
503 : #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
504 : #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
505 : #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
506 : #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
507 : #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
508 : #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
509 : #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
510 :
511 : #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
512 : #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
513 : #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
514 :
515 : #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
516 : #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
517 : #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
518 : #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
519 : #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
520 : #define string_type_node c_global_trees[CTI_STRING_TYPE]
521 : #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
522 :
523 : #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
524 :
525 : #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
526 : #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
527 : #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
528 : #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
529 :
530 : /* The node for C++ `__null'. */
531 : #define null_node c_global_trees[CTI_NULL]
532 : /* The nodes for `nullptr'. */
533 : #define nullptr_node c_global_trees[CTI_NULLPTR]
534 : #define nullptr_type_node c_global_trees[CTI_NULLPTR_TYPE]
535 :
536 : extern GTY(()) tree c_global_trees[CTI_MAX];
537 :
538 : /* Mark which labels are explicitly declared.
539 : These may be shadowed, and may be referenced from nested functions. */
540 : #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
541 :
542 : enum c_language_kind
543 : {
544 : clk_c = 0, /* C without ObjC features. */
545 : clk_objc = 1, /* clk_c with ObjC features. */
546 : clk_cxx = 2, /* ANSI/ISO C++ */
547 : clk_objcxx = 3 /* clk_cxx with ObjC features. */
548 : };
549 :
550 : /* To test for a specific language use c_language, defined by each
551 : front end. For "ObjC features" or "not C++" use the macros. */
552 : extern c_language_kind c_language;
553 :
554 : #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
555 : #define c_dialect_objc() ((c_language & clk_objc) != 0)
556 :
557 : /* The various name of operator that appears in error messages. */
558 : enum ref_operator {
559 : /* NULL */
560 : RO_NULL,
561 : /* array indexing */
562 : RO_ARRAY_INDEXING,
563 : /* unary * */
564 : RO_UNARY_STAR,
565 : /* -> */
566 : RO_ARROW,
567 : /* implicit conversion */
568 : RO_IMPLICIT_CONVERSION,
569 : /* ->* */
570 : RO_ARROW_STAR
571 : };
572 :
573 : /* Information about a statement tree. */
574 :
575 : struct GTY(()) stmt_tree_s {
576 : /* A stack of statement lists being collected. */
577 : vec<tree, va_gc> *x_cur_stmt_list;
578 :
579 : /* In C++, Nonzero if we should treat statements as full
580 : expressions. In particular, this variable is non-zero if at the
581 : end of a statement we should destroy any temporaries created
582 : during that statement. Similarly, if, at the end of a block, we
583 : should destroy any local variables in this block. Normally, this
584 : variable is nonzero, since those are the normal semantics of
585 : C++.
586 :
587 : This flag has no effect in C. */
588 : int stmts_are_full_exprs_p;
589 : };
590 :
591 : typedef struct stmt_tree_s *stmt_tree;
592 :
593 : /* Global state pertinent to the current function. Some C dialects
594 : extend this structure with additional fields. */
595 :
596 : struct GTY(()) c_language_function {
597 : /* While we are parsing the function, this contains information
598 : about the statement-tree that we are building. */
599 : struct stmt_tree_s x_stmt_tree;
600 :
601 : /* Vector of locally defined typedefs, for
602 : -Wunused-local-typedefs. */
603 : vec<tree, va_gc> *local_typedefs;
604 : };
605 :
606 : #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
607 :
608 : /* When building a statement-tree, this is the current statement list
609 : being collected. */
610 : #define cur_stmt_list (stmt_list_stack->last ())
611 :
612 : #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
613 :
614 : /* Language-specific hooks. */
615 :
616 : /* If non-NULL, this function is called after a precompile header file
617 : is loaded. */
618 : extern void (*lang_post_pch_load) (void);
619 :
620 : extern void push_file_scope (void);
621 : extern void pop_file_scope (void);
622 : extern stmt_tree current_stmt_tree (void);
623 : extern tree push_stmt_list (void);
624 : extern tree pop_stmt_list (tree);
625 : extern tree add_stmt (tree);
626 : extern void push_cleanup (tree, tree, bool);
627 :
628 : extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
629 : location_t, tree, tree);
630 : extern tree build_indirect_ref (location_t, tree, ref_operator);
631 :
632 : extern bool has_c_linkage (const_tree decl);
633 : extern bool c_decl_implicit (const_tree);
634 :
635 : /* Switches common to the C front ends. */
636 :
637 : /* Nonzero means don't output line number information. */
638 :
639 : extern char flag_no_line_commands;
640 :
641 : /* Nonzero causes -E output not to be done, but directives such as
642 : #define that have side effects are still obeyed. */
643 :
644 : extern char flag_no_output;
645 :
646 : /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
647 : 'N' or 'U' of the command line switch. */
648 :
649 : extern char flag_dump_macros;
650 :
651 : /* Nonzero means pass #include lines through to the output. */
652 :
653 : extern char flag_dump_includes;
654 :
655 : /* Nonzero means process PCH files while preprocessing. */
656 :
657 : extern bool flag_pch_preprocess;
658 :
659 : /* The file name to which we should write a precompiled header, or
660 : NULL if no header will be written in this compile. */
661 :
662 : extern const char *pch_file;
663 :
664 : /* Nonzero if an ISO standard was selected. It rejects macros in the
665 : user's namespace. */
666 :
667 : extern int flag_iso;
668 :
669 : /* C/ObjC language option variables. */
670 :
671 :
672 : /* Nonzero means allow type mismatches in conditional expressions;
673 : just make their values `void'. */
674 :
675 : extern int flag_cond_mismatch;
676 :
677 : /* Nonzero means enable C89 Amendment 1 features. */
678 :
679 : extern int flag_isoc94;
680 :
681 : /* Nonzero means use the ISO C99 (or later) dialect of C. */
682 :
683 : extern int flag_isoc99;
684 :
685 : /* Nonzero means use the ISO C11 (or later) dialect of C. */
686 :
687 : extern int flag_isoc11;
688 :
689 : /* Nonzero means use the ISO C23 (or later) dialect of C. */
690 :
691 : extern int flag_isoc23;
692 :
693 : /* Nonzero means use the ISO C2Y (or later) dialect of C. */
694 :
695 : extern int flag_isoc2y;
696 :
697 : /* Nonzero means that we have builtin functions, and main is an int. */
698 :
699 : extern int flag_hosted;
700 :
701 : /* ObjC language option variables. */
702 :
703 :
704 : /* Tells the compiler that this is a special run. Do not perform any
705 : compiling, instead we are to test some platform dependent features
706 : and output a C header file with appropriate definitions. */
707 :
708 : extern int print_struct_values;
709 :
710 : /* Tells the compiler what is the constant string class for ObjC. */
711 :
712 : extern const char *constant_string_class_name;
713 :
714 :
715 : /* C++ language option variables. */
716 :
717 : /* The reference version of the ABI for -Wabi. */
718 :
719 : extern int warn_abi_version;
720 :
721 : /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
722 : less than N and the other is at least N. */
723 : #define abi_compat_version_crosses(N) \
724 : (abi_version_at_least(N) \
725 : != (flag_abi_compat_version == 0 \
726 : || flag_abi_compat_version >= (N)))
727 :
728 : /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
729 : less than N and the other is at least N, for use by -Wabi. */
730 : #define abi_version_crosses(N) \
731 : (abi_version_at_least(N) \
732 : != (warn_abi_version == 0 \
733 : || warn_abi_version >= (N)))
734 :
735 : /* The supported C++ dialects. */
736 :
737 : enum cxx_dialect {
738 : cxx_unset,
739 : /* C++98 with TC1 */
740 : cxx98,
741 : cxx03 = cxx98,
742 : /* C++11 */
743 : cxx0x,
744 : cxx11 = cxx0x,
745 : /* C++14 */
746 : cxx14,
747 : /* C++17 */
748 : cxx17,
749 : /* C++20 */
750 : cxx20,
751 : /* C++23 */
752 : cxx23,
753 : /* C++26 */
754 : cxx26,
755 : /* C++29 */
756 : cxx29
757 : };
758 :
759 : /* The C++ dialect being used. C++20 is the default. */
760 : extern enum cxx_dialect cxx_dialect;
761 :
762 : /* Maximum template instantiation depth. This limit is rather
763 : arbitrary, but it exists to limit the time it takes to notice
764 : excessively recursive template instantiations. */
765 :
766 : extern int max_tinst_depth;
767 :
768 : /* Nonzero means that we should not issue warnings about problems that
769 : occur when the code is executed, because the code being processed
770 : is not expected to be executed. This is set during parsing. This
771 : is used for cases like sizeof() and "0 ? a : b". This is a count,
772 : not a bool, because unexecuted expressions can nest. */
773 :
774 : extern int c_inhibit_evaluation_warnings;
775 :
776 : /* Depending on which phase of processing we are in, we may need
777 : to prefer input_location to libcpp's locations. (Specifically,
778 : after the C++ lexer is done lexing tokens, but prior to calling
779 : cpp_finish (), we need to do so. */
780 :
781 : extern bool override_libcpp_locations;
782 :
783 : /* C types are partitioned into three subsets: object, function, and
784 : incomplete types. */
785 : #define C_TYPE_OBJECT_P(type) \
786 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
787 :
788 : #define C_TYPE_INCOMPLETE_P(type) \
789 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
790 :
791 : #define C_TYPE_FUNCTION_P(type) \
792 : (TREE_CODE (type) == FUNCTION_TYPE)
793 :
794 : /* For convenience we define a single macro to identify the class of
795 : object or incomplete types. */
796 : #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
797 : (!C_TYPE_FUNCTION_P (type))
798 :
799 : /* Return true if TYPE is a vector type that should be subject to the GNU
800 : vector extensions (as opposed to a vector type that is used only for
801 : the purposes of defining target-specific built-in functions). */
802 :
803 : inline bool
804 750422329 : gnu_vector_type_p (const_tree type)
805 : {
806 750422329 : return VECTOR_TYPE_P (type) && !TYPE_INDIVISIBLE_P (type);
807 : }
808 :
809 : struct visibility_flags
810 : {
811 : unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
812 : unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
813 : };
814 :
815 : /* These enumerators are possible types of unsafe conversions. */
816 : enum conversion_safety {
817 : /* The conversion is safe. */
818 : SAFE_CONVERSION = 0,
819 : /* Another type of conversion with problems. */
820 : UNSAFE_OTHER,
821 : /* Conversion between signed and unsigned integers. */
822 : UNSAFE_SIGN,
823 : /* Conversions that reduce the precision of reals including conversions
824 : from reals to integers. */
825 : UNSAFE_REAL,
826 : /* Conversions from complex to reals or integers, that discard imaginary
827 : component. */
828 : UNSAFE_IMAGINARY
829 : };
830 :
831 : /* Global visibility options. */
832 : extern struct visibility_flags visibility_options;
833 :
834 : /* Attribute table common to the C front ends. */
835 : extern const struct scoped_attribute_specs c_common_gnu_attribute_table;
836 : extern const struct scoped_attribute_specs c_common_clang_attribute_table;
837 : extern const struct scoped_attribute_specs c_common_format_attribute_table;
838 :
839 : /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
840 : ID is the identifier to use, NAME is the string.
841 : TYPE_DEP indicates whether it depends on type of the function or not
842 : (i.e. __PRETTY_FUNCTION__). */
843 :
844 : extern tree (*make_fname_decl) (location_t, tree, int);
845 :
846 : /* In c-decl.cc and cp/tree.cc. FIXME. */
847 : extern void c_register_addr_space (const char *str, addr_space_t as);
848 :
849 : /* In c-common.cc. */
850 : extern bool in_late_binary_op;
851 : extern const char *c_addr_space_name (addr_space_t as);
852 : extern tree identifier_global_value (tree);
853 : extern tree identifier_global_tag (tree);
854 : extern int names_builtin_p (const char *);
855 : extern tree c_linkage_bindings (tree);
856 : extern void record_builtin_type (enum rid, const char *, tree);
857 : extern void start_fname_decls (void);
858 : extern void finish_fname_decls (void);
859 : extern const char *fname_as_string (int);
860 : extern tree fname_decl (location_t, unsigned, tree);
861 :
862 : extern int check_user_alignment (const_tree, bool, bool);
863 : extern bool check_function_arguments (location_t loc, const_tree, const_tree,
864 : int, tree *, vec<location_t> *,
865 : bool (*comp_types) (tree, tree));
866 : extern void check_function_arguments_recurse (void (*)
867 : (void *, tree,
868 : unsigned HOST_WIDE_INT),
869 : void *, tree,
870 : unsigned HOST_WIDE_INT,
871 : opt_code);
872 : extern bool check_builtin_function_arguments (location_t, vec<location_t>, tree,
873 : tree, int, tree *, bool = true);
874 : extern void check_function_format (const_tree, tree, int, tree *,
875 : vec<location_t> *,
876 : bool (*comp_types) (tree, tree));
877 : extern bool attribute_fallthrough_p (tree);
878 : extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
879 : extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
880 : extern tree handle_unsequenced_attribute (tree *, tree, tree, int, bool *);
881 : extern tree handle_reproducible_attribute (tree *, tree, tree, int, bool *);
882 : extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int,
883 : location_t,
884 : const struct cl_option_handlers *);
885 : extern bool default_handle_c_option (size_t, const char *, int);
886 : extern tree c_common_type_for_mode (machine_mode, int);
887 : extern tree c_common_type_for_size (unsigned int, int);
888 : extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
889 : int, int);
890 : extern tree c_common_unsigned_type (tree);
891 : extern tree c_common_signed_type (tree);
892 : extern tree c_common_signed_or_unsigned_type (int, tree);
893 : extern void c_common_init_ts (void);
894 : extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
895 : extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool);
896 : extern bool decl_with_nonnull_addr_p (const_tree);
897 : extern tree c_fully_fold (tree, bool, bool *, bool = false);
898 : extern tree c_wrap_maybe_const (tree, bool);
899 : extern tree c_common_truthvalue_conversion (location_t, tree);
900 : extern void c_apply_type_quals_to_decl (int, tree);
901 : extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
902 : extern tree c_alignof_expr (location_t, tree);
903 : extern tree c_countof_type (location_t, tree);
904 : extern tree c_maxof_type (location_t, tree);
905 : extern tree c_minof_type (location_t, tree);
906 : /* Print an error message for invalid operands to arith operation CODE.
907 : NOP_EXPR is used as a special case (see truthvalue_conversion). */
908 : extern void binary_op_error (rich_location *, enum tree_code, tree, tree);
909 : extern tree fix_string_type (tree);
910 : extern tree convert_and_check (location_t, tree, tree, bool = false);
911 : extern bool c_determine_visibility (tree);
912 : extern bool vector_types_compatible_elements_p (tree, tree);
913 : extern void mark_valid_location_for_stdc_pragma (bool);
914 : extern bool valid_location_for_stdc_pragma_p (void);
915 : extern void set_float_const_decimal64 (void);
916 : extern void clear_float_const_decimal64 (void);
917 : extern bool float_const_decimal64_p (void);
918 :
919 : extern bool keyword_begins_type_specifier (enum rid);
920 : extern bool keyword_is_storage_class_specifier (enum rid);
921 : extern bool keyword_is_type_qualifier (enum rid);
922 : extern bool keyword_is_decl_specifier (enum rid);
923 : extern unsigned max_align_t_align (void);
924 : extern bool cxx_fundamental_alignment_p (unsigned);
925 : extern bool pointer_to_zero_sized_aggr_p (tree);
926 : extern bool bool_promoted_to_int_p (tree);
927 : extern tree fold_for_warn (tree);
928 : extern tree c_common_get_narrower (tree, int *);
929 : extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *);
930 : extern void c_common_finalize_early_debug (void);
931 : extern unsigned int c_strict_flex_array_level_of (tree);
932 : extern bool c_option_is_from_cpp_diagnostics (int);
933 : extern tree c_hardbool_type_attr_1 (tree, tree *, tree *);
934 :
935 : /* Used by convert_and_check; in front ends. */
936 : extern tree convert_init (tree, tree);
937 :
938 : #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
939 : #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
940 :
941 : /* Subroutine of build_binary_op, used for certain operations. */
942 : extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
943 :
944 : /* Return true if division or modulo op0 / op1 or op0 % op1 may be shortened.
945 : We can shorten only if we can guarantee that op0 is not signed integral
946 : minimum or op1 is not -1, because e.g. (long long) INT_MIN / -1 is
947 : well defined INT_MAX + 1LL if long long is wider than int, but INT_MIN / -1
948 : is UB. */
949 : inline bool
950 8704272 : may_shorten_divmod (tree op0, tree op1)
951 : {
952 8704272 : tree type0 = TREE_TYPE (op0);
953 8704272 : if (TYPE_UNSIGNED (type0))
954 : return true;
955 : /* A cast from narrower unsigned won't be signed integral minimum,
956 : but cast from same or wider precision unsigned could be. */
957 5585504 : if (TREE_CODE (op0) == NOP_EXPR
958 1702959 : && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (op0, 0)))
959 1702954 : && TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0)))
960 5588781 : && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0)))
961 3277 : < TYPE_PRECISION (type0)))
962 : return true;
963 5582826 : if (TREE_CODE (op1) == INTEGER_CST && !integer_all_onesp (op1))
964 : return true;
965 : return false;
966 : }
967 :
968 : /* Subroutine of build_binary_op, used for comparison operations.
969 : See if the operands have both been converted from subword integer types
970 : and, if so, perhaps change them both back to their original type. */
971 : extern tree shorten_compare (location_t, tree *, tree *, tree *,
972 : enum tree_code *);
973 :
974 : extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
975 : bool = true);
976 :
977 : /* Add qualifiers to a type, in the fashion for C. */
978 : extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0);
979 :
980 : /* Build tree nodes and builtin functions common to both C and C++ language
981 : frontends. */
982 : extern void c_common_nodes_and_builtins (void);
983 :
984 : extern void disable_builtin_function (const char *);
985 :
986 : extern void set_compound_literal_name (tree decl);
987 :
988 : extern tree build_va_arg (location_t, tree, tree);
989 :
990 : extern const unsigned int c_family_lang_mask;
991 : extern unsigned int c_common_option_lang_mask (void);
992 : extern void c_common_diagnostics_set_defaults (diagnostics::context *);
993 : extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
994 : extern void c_common_init_options_struct (struct gcc_options *);
995 : extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
996 : extern bool c_common_post_options (const char **);
997 : extern bool c_common_init (void);
998 : extern void c_common_finish (void);
999 : extern void c_common_parse_file (void);
1000 : extern alias_set_type c_common_get_alias_set (tree);
1001 : extern void c_register_builtin_type (tree, const char*);
1002 : extern bool c_promoting_integer_type_p (const_tree);
1003 : extern bool self_promoting_args_p (const_tree);
1004 : extern tree strip_pointer_operator (tree);
1005 : extern tree strip_pointer_or_array_types (tree);
1006 : extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
1007 :
1008 : /* This is the basic parsing function. */
1009 : extern void c_parse_file (void);
1010 :
1011 : extern void c_parse_final_cleanups (void);
1012 :
1013 : /* This initializes for preprocess-only mode. */
1014 : extern void c_init_preprocess (void);
1015 :
1016 : /* These macros provide convenient access to the various _STMT nodes. */
1017 :
1018 : /* Nonzero if a given STATEMENT_LIST represents the outermost binding
1019 : if a statement expression. */
1020 : #define STATEMENT_LIST_STMT_EXPR(NODE) \
1021 : TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
1022 :
1023 : /* Nonzero if a label has been added to the statement list. */
1024 : #define STATEMENT_LIST_HAS_LABEL(NODE) \
1025 : TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
1026 :
1027 : /* C_MAYBE_CONST_EXPR accessors. */
1028 : #define C_MAYBE_CONST_EXPR_PRE(NODE) \
1029 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
1030 : #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
1031 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
1032 : #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
1033 : TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1034 : #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
1035 : TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1036 : #define EXPR_INT_CONST_OPERANDS(EXPR) \
1037 : (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
1038 : && (TREE_CODE (EXPR) == INTEGER_CST \
1039 : || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
1040 : && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
1041 :
1042 : /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
1043 : #define DECL_C_BIT_FIELD(NODE) \
1044 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
1045 : #define SET_DECL_C_BIT_FIELD(NODE) \
1046 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
1047 : #define CLEAR_DECL_C_BIT_FIELD(NODE) \
1048 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1049 :
1050 : /* True if the decl was an unnamed bitfield. */
1051 : #define DECL_UNNAMED_BIT_FIELD(NODE) \
1052 : (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
1053 :
1054 : /* True iff TYPE is cv decltype(nullptr). */
1055 : #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
1056 :
1057 : /* Returns the underlying type of the given enumeration type. The
1058 : underlying type is determined in different ways, depending on the
1059 : properties of the enum:
1060 :
1061 : - In C++0x or C23, the underlying type can be explicitly specified, e.g.,
1062 :
1063 : enum E1 : char { ... } // underlying type is char
1064 :
1065 : - In a C++0x scoped enumeration, the underlying type is int
1066 : unless otherwises specified:
1067 :
1068 : enum class E2 { ... } // underlying type is int
1069 :
1070 : - Otherwise, the underlying type is determined based on the
1071 : values of the enumerators. In this case, the
1072 : ENUM_UNDERLYING_TYPE will not be set until after the definition
1073 : of the enumeration is completed by finish_enum. */
1074 : #define ENUM_UNDERLYING_TYPE(TYPE) \
1075 : TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
1076 :
1077 : /* Determines whether an ENUMERAL_TYPE has an explicit
1078 : underlying type. */
1079 : #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
1080 :
1081 : extern tree do_case (location_t, tree, tree, tree);
1082 : extern tree build_stmt (location_t, enum tree_code, ...);
1083 : extern tree build_real_imag_expr (location_t, enum tree_code, tree);
1084 :
1085 : /* These functions must be defined by each front-end which implements
1086 : a variant of the C language. They are used in c-common.cc. */
1087 :
1088 : extern tree build_unary_op (location_t, enum tree_code, tree, bool);
1089 : extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool);
1090 : extern tree perform_integral_promotions (tree);
1091 :
1092 : /* These functions must be defined by each front-end which implements
1093 : a variant of the C language. They are used by port files. */
1094 :
1095 : extern tree default_conversion (tree);
1096 :
1097 : /* Given two integer or real types, return the type for their sum.
1098 : Given two compatible ANSI C types, returns the merged type. */
1099 :
1100 : extern tree common_type (tree, tree);
1101 :
1102 : extern tree decl_constant_value (tree);
1103 :
1104 : /* Handle increment and decrement of boolean types. */
1105 : extern tree boolean_increment (enum tree_code, tree);
1106 :
1107 : extern int case_compare (splay_tree_key, splay_tree_key);
1108 :
1109 : extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree,
1110 : tree = NULL_TREE);
1111 : extern bool c_switch_covers_all_cases_p (splay_tree, tree);
1112 : extern bool c_block_may_fallthru (const_tree);
1113 :
1114 : extern tree build_function_call (location_t, tree, tree);
1115 :
1116 : extern tree build_function_call_vec (location_t, vec<location_t>, tree,
1117 : vec<tree, va_gc> *, vec<tree, va_gc> *,
1118 : tree = NULL_TREE);
1119 :
1120 : extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *,
1121 : bool = true);
1122 :
1123 : extern tree finish_label_address_expr (tree, location_t);
1124 :
1125 : /* Same function prototype, but the C and C++ front ends have
1126 : different implementations. Used in c-common.cc. */
1127 : extern tree lookup_label (tree);
1128 : extern tree lookup_name (tree);
1129 : extern bool lvalue_p (const_tree);
1130 : extern int maybe_adjust_arg_pos_for_attribute (const_tree);
1131 : extern bool instantiation_dependent_expression_p (tree);
1132 :
1133 : extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
1134 : extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
1135 : extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
1136 : extern tree c_build_shufflevector (location_t, tree, tree,
1137 : const vec<tree> &, bool = true);
1138 : extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true);
1139 :
1140 : extern void init_c_lex (void);
1141 :
1142 : extern void c_cpp_builtins (cpp_reader *);
1143 : extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
1144 : extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
1145 : enum cpp_warning_reason, rich_location *,
1146 : const char *, va_list *)
1147 : ATTRIBUTE_GCC_DIAG(5,0);
1148 : extern int c_common_has_attribute (cpp_reader *, bool);
1149 : extern int c_common_has_builtin (cpp_reader *);
1150 : extern int c_common_has_feature (cpp_reader *, bool);
1151 :
1152 : /* Implemented by each front end in *-lang.cc. */
1153 : extern void c_family_register_lang_features ();
1154 :
1155 : /* Implemented in c-family/c-common.cc. */
1156 : extern void c_common_register_feature (const char *, bool);
1157 : extern bool has_feature_p (const char *, bool);
1158 :
1159 : extern bool parse_optimize_options (tree, bool);
1160 :
1161 : /* Positive if an implicit `extern "C"' scope has just been entered;
1162 : negative if such a scope has just been exited. */
1163 : extern GTY(()) int pending_lang_change;
1164 :
1165 : /* Information recorded about each file examined during compilation. */
1166 :
1167 : struct c_fileinfo
1168 : {
1169 : int time; /* Time spent in the file. */
1170 :
1171 : /* Flags used only by C++.
1172 : INTERFACE_ONLY nonzero means that we are in an "interface" section
1173 : of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1174 : the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1175 : INTERFACE_ONLY is zero, it means that we are responsible for
1176 : exporting definitions that others might need. */
1177 : short interface_only;
1178 : short interface_unknown;
1179 : };
1180 :
1181 : struct c_fileinfo *get_fileinfo (const char *);
1182 : extern void dump_time_statistics (void);
1183 :
1184 : extern bool c_dump_tree (void *, tree);
1185 :
1186 : extern void verify_sequence_points (tree);
1187 :
1188 : extern tree fold_offsetof (tree, tree = size_type_node,
1189 : tree_code ctx = ERROR_MARK);
1190 :
1191 : extern int complete_array_type (tree *, tree, bool);
1192 : extern void complete_flexible_array_elts (tree);
1193 :
1194 : extern tree builtin_type_for_size (int, bool);
1195 :
1196 : extern void c_common_mark_addressable_vec (tree);
1197 :
1198 : extern void set_underlying_type (tree);
1199 : extern bool user_facing_original_type_p (const_tree);
1200 : extern void record_types_used_by_current_var_decl (tree);
1201 : extern vec<tree, va_gc> *make_tree_vector (void);
1202 : extern void release_tree_vector (vec<tree, va_gc> *);
1203 : extern vec<tree, va_gc> *make_tree_vector_single (tree);
1204 : extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1205 : extern vec<tree, va_gc> *append_ctor_to_tree_vector (vec<tree, va_gc> *,
1206 : tree);
1207 : extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree);
1208 : extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1209 :
1210 : /* Used for communication between c_common_type_for_mode and
1211 : c_register_builtin_type. */
1212 : extern GTY(()) tree registered_builtin_types;
1213 :
1214 : /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1215 : timestamp to replace embedded current dates to get reproducible
1216 : results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1217 : extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
1218 :
1219 : /* The value (as a unix timestamp) corresponds to date
1220 : "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1221 : __TIME__ can store. */
1222 : #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1223 :
1224 : /* Callback for libcpp for offering spelling suggestions for misspelled
1225 : directives. */
1226 : extern const char *cb_get_suggestion (cpp_reader *, const char *,
1227 : const char *const *);
1228 :
1229 : extern GTY(()) string_concat_db *g_string_concat_db;
1230 :
1231 : class substring_loc;
1232 : extern const char *c_get_substring_location (const substring_loc &substr_loc,
1233 : location_t *out_loc);
1234 :
1235 : /* In c-gimplify.cc. */
1236 : typedef hash_map<tree, tree_pair,
1237 : simple_hashmap_traits<tree_decl_hash,
1238 : tree_pair>> bc_hash_map_t;
1239 : typedef struct bc_state
1240 : {
1241 : tree bc_label[2];
1242 : bc_hash_map_t *bc_hash_map;
1243 : } bc_state_t;
1244 : extern void save_bc_state (bc_state_t *);
1245 : extern void restore_bc_state (bc_state_t *);
1246 : extern tree c_genericize_control_stmt (tree *, int *, void *,
1247 : walk_tree_fn, walk_tree_lh);
1248 : extern void c_genericize (tree);
1249 : extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1250 : extern tree c_build_bind_expr (location_t, tree, tree);
1251 :
1252 : /* In c-lex.cc. */
1253 : extern enum cpp_ttype
1254 : conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind);
1255 :
1256 : /* In c-pch.cc */
1257 : extern void pch_init (void);
1258 : extern void pch_cpp_save_state (void);
1259 : extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1260 : extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1261 : const char *orig);
1262 : extern void c_common_write_pch (void);
1263 : extern void c_common_no_more_pch (void);
1264 : extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1265 :
1266 : /* In *-checksum.c */
1267 : extern const unsigned char executable_checksum[16];
1268 :
1269 : /* In c-cppbuiltin.cc */
1270 : extern void builtin_define_std (const char *macro);
1271 : extern void builtin_define_with_value (const char *, const char *, int);
1272 : extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
1273 : extern void builtin_define_type_sizeof (const char *, tree);
1274 : extern void c_stddef_cpp_builtins (void);
1275 : extern void fe_file_change (const line_map_ordinary *);
1276 : extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char,
1277 : rich_location *richloc);
1278 : extern diagnostics::option_id get_option_for_builtin_define (const char *macro_name);
1279 :
1280 : /* In c-ppoutput.cc */
1281 : extern void init_pp_output (FILE *);
1282 : extern void preprocess_file (cpp_reader *);
1283 : extern void pp_file_change (const line_map_ordinary *);
1284 : extern void pp_dir_change (cpp_reader *, const char *);
1285 : extern bool check_missing_format_attribute (tree, tree);
1286 : extern void c_pp_stream_token (cpp_reader *, const cpp_token *, location_t loc);
1287 :
1288 : /* In c-omp.cc */
1289 : typedef wide_int_bitmask omp_clause_mask;
1290 :
1291 : #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1292 :
1293 : enum c_omp_clause_split
1294 : {
1295 : C_OMP_CLAUSE_SPLIT_TARGET = 0,
1296 : C_OMP_CLAUSE_SPLIT_TEAMS,
1297 : C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1298 : C_OMP_CLAUSE_SPLIT_PARALLEL,
1299 : C_OMP_CLAUSE_SPLIT_FOR,
1300 : C_OMP_CLAUSE_SPLIT_SIMD,
1301 : C_OMP_CLAUSE_SPLIT_COUNT,
1302 : C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR,
1303 : C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR,
1304 : C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR,
1305 : C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE
1306 : };
1307 :
1308 : enum c_omp_region_type
1309 : {
1310 : C_ORT_OMP = 1 << 0,
1311 : C_ORT_ACC = 1 << 1,
1312 : C_ORT_DECLARE_SIMD = 1 << 2,
1313 : C_ORT_TARGET = 1 << 3,
1314 : C_ORT_EXIT_DATA = 1 << 4,
1315 : C_ORT_INTEROP = 1 << 5,
1316 : C_ORT_DECLARE_MAPPER = 1 << 6,
1317 : C_ORT_UPDATE = 1 << 7,
1318 : C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD,
1319 : C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET,
1320 : C_ORT_OMP_EXIT_DATA = C_ORT_OMP | C_ORT_EXIT_DATA,
1321 : C_ORT_OMP_UPDATE = C_ORT_OMP | C_ORT_UPDATE,
1322 : C_ORT_OMP_INTEROP = C_ORT_OMP | C_ORT_INTEROP,
1323 : C_ORT_OMP_DECLARE_MAPPER = C_ORT_OMP | C_ORT_DECLARE_MAPPER,
1324 : C_ORT_ACC_TARGET = C_ORT_ACC | C_ORT_TARGET
1325 : };
1326 :
1327 : extern tree c_finish_omp_master (location_t, tree);
1328 : extern tree c_finish_omp_masked (location_t, tree, tree);
1329 : extern tree c_finish_omp_taskgroup (location_t, tree, tree);
1330 : extern tree c_finish_omp_critical (location_t, tree, tree, tree);
1331 : extern tree c_finish_omp_ordered (location_t, tree, tree);
1332 : extern void c_finish_omp_barrier (location_t);
1333 : extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1334 : tree, tree, tree, tree, tree, tree, bool,
1335 : enum omp_memory_order, bool, bool = false);
1336 : extern bool c_omp_interop_t_p (tree);
1337 : extern bool c_omp_depend_t_p (tree);
1338 : extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind,
1339 : tree);
1340 : extern void c_finish_omp_flush (location_t, int);
1341 : extern void c_finish_omp_taskwait (location_t);
1342 : extern void c_finish_omp_taskyield (location_t);
1343 : extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1344 : tree, tree, tree, tree, bool);
1345 : extern int c_omp_find_generated_loop (tree &, int, walk_tree_lh);
1346 : extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh);
1347 : extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int,
1348 : tree, tree, tree, walk_tree_lh);
1349 : extern bool c_omp_check_loop_binding_exprs (tree, vec<tree> *);
1350 : extern tree c_finish_oacc_wait (location_t, tree, tree);
1351 : extern tree c_oacc_split_loop_clauses (tree, tree *, bool);
1352 : extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1353 : tree, tree *);
1354 : extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1355 : extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1356 : extern bool c_omp_predefined_variable (tree);
1357 : extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1358 : extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree);
1359 : extern tree c_omp_check_context_selector (location_t, tree);
1360 : extern void c_omp_mark_declare_variant (location_t, tree, tree);
1361 : extern void c_omp_adjust_map_clauses (tree, bool);
1362 : template<typename T> struct omp_mapper_list;
1363 : extern void c_omp_find_nested_mappers (struct omp_mapper_list<tree> *, tree);
1364 : extern tree c_omp_instantiate_mappers (tree, enum c_omp_region_type);
1365 :
1366 : namespace omp_addr_tokenizer { struct omp_addr_token; }
1367 : typedef omp_addr_tokenizer::omp_addr_token omp_addr_token;
1368 :
1369 : class c_omp_address_inspector
1370 : {
1371 : location_t loc;
1372 : tree root_term;
1373 : bool indirections;
1374 : int map_supported;
1375 :
1376 : protected:
1377 : tree orig;
1378 :
1379 : public:
1380 45116 : c_omp_address_inspector (location_t loc, tree t)
1381 45116 : : loc (loc), root_term (NULL_TREE), indirections (false),
1382 45116 : map_supported (-1), orig (t)
1383 : {
1384 : }
1385 :
1386 32777 : ~c_omp_address_inspector ()
1387 : {
1388 12339 : }
1389 :
1390 49221 : virtual bool processing_template_decl_p ()
1391 : {
1392 49221 : return false;
1393 : }
1394 :
1395 0 : virtual void emit_unmappable_type_notes (tree)
1396 : {
1397 0 : }
1398 :
1399 0 : virtual tree convert_from_reference (tree)
1400 : {
1401 0 : gcc_unreachable ();
1402 : }
1403 :
1404 19 : virtual tree build_array_ref (location_t loc, tree arr, tree idx)
1405 : {
1406 19 : tree eltype = TREE_TYPE (TREE_TYPE (arr));
1407 19 : return build4_loc (loc, ARRAY_REF, eltype, arr, idx, NULL_TREE,
1408 19 : NULL_TREE);
1409 : }
1410 :
1411 : virtual bool check_clause (tree);
1412 : tree get_root_term (bool);
1413 :
1414 : tree unconverted_ref_origin ();
1415 : bool component_access_p ();
1416 :
1417 : bool map_supported_p ();
1418 :
1419 : tree get_origin (tree);
1420 : tree maybe_unconvert_ref (tree);
1421 :
1422 : bool maybe_zero_length_array_section (tree);
1423 :
1424 : tree expand_array_base (tree, vec<omp_addr_token *> &, tree, unsigned *,
1425 : c_omp_region_type);
1426 : tree expand_component_selector (tree, vec<omp_addr_token *> &, tree,
1427 : unsigned *, c_omp_region_type);
1428 : tree expand_map_clause (tree, tree, vec<omp_addr_token *> &,
1429 : c_omp_region_type);
1430 : };
1431 :
1432 : enum c_omp_directive_kind {
1433 : C_OMP_DIR_STANDALONE,
1434 : C_OMP_DIR_CONSTRUCT,
1435 : C_OMP_DIR_DECLARATIVE,
1436 : C_OMP_DIR_UTILITY,
1437 : C_OMP_DIR_INFORMATIONAL,
1438 : C_OMP_DIR_META
1439 : };
1440 :
1441 : struct c_omp_directive {
1442 : const char *first, *second, *third;
1443 : unsigned int id;
1444 : enum c_omp_directive_kind kind;
1445 : bool simd;
1446 : };
1447 :
1448 : extern const struct c_omp_directive c_omp_directives[];
1449 : extern const struct c_omp_directive *c_omp_categorize_directive (const char *,
1450 : const char *,
1451 : const char *);
1452 : extern tree c_omp_expand_variant_construct (vec<struct omp_variant> &);
1453 :
1454 : /* Return next tree in the chain for chain_next walking of tree nodes. */
1455 : inline tree
1456 87012185086 : c_tree_chain_next (tree t)
1457 : {
1458 : /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1459 : kind of object, never a long chain of nodes. Prefer
1460 : TYPE_NEXT_VARIANT for types. */
1461 87012185086 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1462 10062927666 : return TYPE_NEXT_VARIANT (t);
1463 : /* Otherwise, if there is TREE_CHAIN, return it. */
1464 76949257420 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1465 46488344234 : return TREE_CHAIN (t);
1466 : return NULL;
1467 : }
1468 :
1469 : /* Return the hardbool attribute associated with TYPE, if there is one, provided
1470 : that TYPE looks like an enumeral type that might have been set up by
1471 : handle_hardbool_attribute. Return NULL otherwise.
1472 :
1473 : If FALSE_VALUE or TRUE_VALUE are non-NULL and TYPE is a hardened boolean
1474 : type, store the corresponding representation values. */
1475 : static inline tree
1476 514484968 : c_hardbool_type_attr (tree type,
1477 : tree *false_value = NULL, tree *true_value = NULL)
1478 : {
1479 514484968 : if (TREE_CODE (type) != ENUMERAL_TYPE
1480 514484968 : || TYPE_LANG_SPECIFIC (type))
1481 : return NULL_TREE;
1482 :
1483 70676 : return c_hardbool_type_attr_1 (type, false_value, true_value);
1484 : }
1485 :
1486 : /* Mask used by tm_stmt_attr. */
1487 : #define TM_STMT_ATTR_OUTER 2
1488 : #define TM_STMT_ATTR_ATOMIC 4
1489 : #define TM_STMT_ATTR_RELAXED 8
1490 :
1491 : /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1492 : are ordered specifically such that more restrictive attributes are
1493 : at lower bit positions. This fact is known by the C++ tm attribute
1494 : inheritance code such that least bit extraction (mask & -mask) results
1495 : in the most restrictive attribute. */
1496 : #define TM_ATTR_SAFE 1
1497 : #define TM_ATTR_CALLABLE 2
1498 : #define TM_ATTR_PURE 4
1499 : #define TM_ATTR_IRREVOCABLE 8
1500 : #define TM_ATTR_MAY_CANCEL_OUTER 16
1501 :
1502 : /* A suffix-identifier value doublet that represents user-defined literals
1503 : for C++-0x. */
1504 : enum overflow_type {
1505 : OT_UNDERFLOW = -1,
1506 : OT_NONE,
1507 : OT_OVERFLOW
1508 : };
1509 :
1510 : struct GTY(()) tree_userdef_literal {
1511 : struct tree_base base;
1512 : tree suffix_id;
1513 : tree value;
1514 : tree num_string;
1515 : enum overflow_type overflow;
1516 : };
1517 :
1518 : #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1519 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1520 :
1521 : #define USERDEF_LITERAL_VALUE(NODE) \
1522 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1523 :
1524 : #define USERDEF_LITERAL_OVERFLOW(NODE) \
1525 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1526 :
1527 : #define USERDEF_LITERAL_NUM_STRING(NODE) \
1528 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1529 :
1530 : #define USERDEF_LITERAL_TYPE(NODE) \
1531 : (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1532 :
1533 : extern tree build_userdef_literal (tree suffix_id, tree value,
1534 : enum overflow_type overflow,
1535 : tree num_string);
1536 :
1537 :
1538 : /* WHILE_STMT accessors. These give access to the condition of the
1539 : while statement, the body, and name of the while statement, and
1540 : condition preparation statements and number of its nested cleanups,
1541 : respectively. */
1542 : #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1543 : #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1544 : #define WHILE_NAME(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 2)
1545 : #define WHILE_COND_PREP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 3)
1546 : #define WHILE_COND_CLEANUP(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 4)
1547 :
1548 : /* DO_STMT accessors. These give access to the condition of the do
1549 : statement, the body and name of the do statement, respectively. */
1550 : #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1551 : #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1552 : #define DO_NAME(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 2)
1553 :
1554 : /* FOR_STMT accessors. These give access to the init statement,
1555 : condition, update expression, body and name of the for statement,
1556 : and condition preparation statements and number of its nested cleanups,
1557 : respectively. */
1558 : #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1559 : #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1560 : #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1561 : #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1562 : #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1563 : #define FOR_NAME(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 5)
1564 : #define FOR_COND_PREP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 6)
1565 : #define FOR_COND_CLEANUP(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 7)
1566 :
1567 : /* BREAK_STMT accessors. */
1568 : #define BREAK_NAME(NODE) TREE_OPERAND (BREAK_STMT_CHECK (NODE), 0)
1569 :
1570 : /* CONTINUE_STMT accessors. */
1571 : #define CONTINUE_NAME(NODE) TREE_OPERAND (CONTINUE_STMT_CHECK (NODE), 0)
1572 :
1573 : #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1574 : #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1575 : #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1576 : #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1577 : #define SWITCH_STMT_NAME(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 4)
1578 : /* True if there are case labels for all possible values of switch cond, either
1579 : because there is a default: case label or because the case label ranges cover
1580 : all values. */
1581 : #define SWITCH_STMT_ALL_CASES_P(NODE) \
1582 : TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1583 : /* True if the body of a switch stmt contains no BREAK_STMTs. */
1584 : #define SWITCH_STMT_NO_BREAK_P(NODE) \
1585 : TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1586 :
1587 :
1588 : /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1589 : #define LABEL_DECL_BREAK(NODE) \
1590 : DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1591 :
1592 : /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1593 : #define LABEL_DECL_CONTINUE(NODE) \
1594 : DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1595 :
1596 : extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree);
1597 :
1598 : /* Possible cases of scalar_to_vector conversion. */
1599 : enum stv_conv {
1600 : stv_error, /* Error occurred. */
1601 : stv_nothing, /* Nothing happened. */
1602 : stv_firstarg, /* First argument must be expanded. */
1603 : stv_secondarg /* Second argument must be expanded. */
1604 : };
1605 :
1606 : extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1607 : tree op0, tree op1, bool);
1608 :
1609 : extern tree find_inv_trees (tree *, int *, void *);
1610 : extern tree replace_inv_trees (tree *, int *, void *);
1611 :
1612 : extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION);
1613 : extern bool valid_array_size_p (location_t, const_tree, tree, bool = true);
1614 : extern void invalid_array_size_error (location_t, cst_size_error,
1615 : const_tree, const_tree);
1616 :
1617 : /* In c-warn.cc. */
1618 : extern void constant_expression_warning (tree);
1619 : extern void constant_expression_error (tree);
1620 : extern void overflow_warning (location_t, tree, tree = NULL_TREE);
1621 : extern void warn_logical_operator (location_t, enum tree_code, tree,
1622 : enum tree_code, tree, enum tree_code, tree);
1623 : extern void warn_tautological_cmp (const op_location_t &, enum tree_code,
1624 : tree, tree);
1625 : extern void warn_logical_not_parentheses (location_t, enum tree_code, tree,
1626 : tree);
1627 : extern bool warn_if_unused_value (const_tree, location_t, bool = false);
1628 : extern bool strict_aliasing_warning (location_t, tree, tree);
1629 : extern void sizeof_pointer_memaccess_warning (location_t *, tree,
1630 : vec<tree, va_gc> *, tree *,
1631 : bool (*) (tree, tree));
1632 : extern void check_main_parameter_types (tree decl);
1633 : extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
1634 : extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool);
1635 : extern void warn_for_omitted_condop (location_t, tree);
1636 : extern bool warn_for_restrict (unsigned, tree *, unsigned);
1637 : extern void warn_for_address_of_packed_member (tree, tree);
1638 : extern void warn_parms_array_mismatch (location_t, tree, tree);
1639 : extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree);
1640 : extern void do_warn_array_compare (location_t, tree_code, tree, tree);
1641 :
1642 : /* Places where an lvalue, or modifiable lvalue, may be required.
1643 : Used to select diagnostic messages in lvalue_error and
1644 : readonly_error. */
1645 : enum lvalue_use {
1646 : lv_assign,
1647 : lv_increment,
1648 : lv_decrement,
1649 : lv_addressof,
1650 : lv_asm
1651 : };
1652 :
1653 : extern void lvalue_error (location_t, enum lvalue_use);
1654 : extern void invalid_indirection_error (location_t, tree, ref_operator);
1655 : extern void readonly_error (location_t, tree, enum lvalue_use);
1656 : extern void warn_array_subscript_with_type_char (location_t, tree);
1657 : extern void warn_about_parentheses (location_t,
1658 : enum tree_code,
1659 : enum tree_code, tree,
1660 : enum tree_code, tree);
1661 : extern void warn_for_unused_label (tree label);
1662 : extern void warn_for_div_by_zero (location_t, tree divisor);
1663 : extern void warn_for_memset (location_t, tree, tree, int);
1664 : extern void warn_for_calloc (location_t *, tree, vec<tree, va_gc> *,
1665 : tree *, tree);
1666 : extern void warn_for_alloc_size (location_t, tree, tree, tree);
1667 : extern void warn_for_sign_compare (location_t,
1668 : tree orig_op0, tree orig_op1,
1669 : tree op0, tree op1,
1670 : tree result_type,
1671 : enum tree_code resultcode);
1672 : extern void do_warn_double_promotion (tree, tree, tree, const char *,
1673 : location_t);
1674 : extern void do_warn_unused_parameter (tree);
1675 : extern void record_locally_defined_typedef (tree);
1676 : extern void maybe_record_typedef_use (tree);
1677 : extern void maybe_warn_unused_local_typedefs (void);
1678 : extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree);
1679 : extern bool maybe_warn_shift_overflow (location_t, tree, tree);
1680 : extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **);
1681 : extern bool diagnose_mismatched_attributes (tree, tree);
1682 : extern tree do_warn_duplicated_branches_r (tree *, int *, void *);
1683 : extern void warn_for_multistatement_macros (location_t, location_t,
1684 : location_t, enum rid);
1685 :
1686 : extern void check_for_xor_used_as_pow (location_t lhs_loc, tree lhs_val,
1687 : location_t operator_loc,
1688 : location_t rhs_loc, tree rhs_val);
1689 :
1690 : /* In c-attribs.cc. */
1691 : extern bool attribute_takes_identifier_p (const_tree);
1692 : extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *);
1693 : extern tree handle_unused_attribute (tree *, tree, tree, int, bool *);
1694 : extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *);
1695 : extern int parse_tm_stmt_attr (tree, int);
1696 : extern int tm_attr_to_mask (tree);
1697 : extern tree tm_mask_to_attr (int);
1698 : extern tree find_tm_attribute (tree);
1699 : extern const struct attribute_spec::exclusions attr_aligned_exclusions[];
1700 : extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[];
1701 : extern const struct attribute_spec::exclusions attr_noreturn_exclusions[];
1702 : extern tree handle_aligned_attribute (tree *, tree, tree, int, bool *);
1703 : extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
1704 : extern tree handle_musttail_attribute (tree *, tree, tree, int, bool *);
1705 : extern bool has_attribute (location_t, tree, tree, tree (*)(tree));
1706 : extern tree build_attr_access_from_parms (tree, bool);
1707 : extern void set_musttail_on_return (tree, location_t, bool);
1708 :
1709 : /* In c-format.cc. */
1710 : extern bool valid_format_string_type_p (tree);
1711 :
1712 : /* A bitmap of flags to positional_argument. */
1713 : enum posargflags {
1714 : /* Consider positional attribute argument value zero valid. */
1715 : POSARG_ZERO = 1,
1716 : /* Consider positional attribute argument value valid if it refers
1717 : to the ellipsis (i.e., beyond the last typed argument). */
1718 : POSARG_ELLIPSIS = 2
1719 : };
1720 :
1721 : extern tree positional_argument (const_tree, const_tree, tree &, tree_code,
1722 : int = 0, int = posargflags ());
1723 :
1724 : extern enum flt_eval_method
1725 : excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method);
1726 :
1727 : extern int c_flt_eval_method (bool ts18661_p);
1728 : extern void add_no_sanitize_value (tree node, sanitize_code_type flags);
1729 :
1730 : extern void maybe_add_include_fixit (rich_location *, const char *, bool);
1731 : extern void maybe_suggest_missing_token_insertion (rich_location *richloc,
1732 : enum cpp_ttype token_type,
1733 : location_t prev_token_loc);
1734 : extern void maybe_emit_indirection_note (location_t loc,
1735 : tree expr, tree expected_type);
1736 : extern bool compatible_types_for_indirection_note_p (tree type1, tree type2);
1737 :
1738 : extern tree braced_lists_to_strings (tree, tree);
1739 :
1740 : #if CHECKING_P
1741 : namespace selftest {
1742 : /* Declarations for specific families of tests within c-family,
1743 : by source file, in alphabetical order. */
1744 : extern void c_format_cc_tests (void);
1745 : extern void c_indentation_cc_tests (void);
1746 : extern void c_opt_problem_cc_tests (void);
1747 : extern void c_pretty_print_cc_tests (void);
1748 : extern void c_spellcheck_cc_tests (void);
1749 :
1750 : /* The entrypoint for running all of the above tests. */
1751 : extern void c_family_tests (void);
1752 : } // namespace selftest
1753 : #endif /* #if CHECKING_P */
1754 :
1755 : #endif /* ! GCC_C_COMMON_H */
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