Line data Source code
1 : /* Definitions for c-common.cc.
2 : Copyright (C) 1987-2023 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,
105 :
106 : /* C extensions */
107 : RID_ASM, RID_TYPEOF, RID_TYPEOF_UNQUAL, RID_ALIGNOF, RID_ATTRIBUTE,
108 : RID_VA_ARG,
109 : RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR,
110 : RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE,
111 : RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH,
112 : RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER,
113 : RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
114 :
115 : /* TS 18661-3 keywords, in the same sequence as the TI_* values. */
116 : RID_FLOAT16,
117 : RID_FLOATN_NX_FIRST = RID_FLOAT16,
118 : RID_FLOAT32,
119 : RID_FLOAT64,
120 : RID_FLOAT128,
121 : RID_FLOAT32X,
122 : RID_FLOAT64X,
123 : RID_FLOAT128X,
124 : #define CASE_RID_FLOATN_NX \
125 : case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \
126 : case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X
127 :
128 : RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN,
129 :
130 : /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */
131 : RID_GIMPLE,
132 :
133 : /* "__PHI", for parsing PHI function in GIMPLE FE. */
134 : RID_PHI,
135 :
136 : /* "__RTL", for the RTL-parsing extension to the C frontend. */
137 : RID_RTL,
138 :
139 : /* C11 */
140 : RID_ALIGNAS, RID_GENERIC,
141 :
142 : /* This means to warn that this is a C++ keyword, and then treat it
143 : as a normal identifier. */
144 : RID_CXX_COMPAT_WARN,
145 :
146 : /* GNU transactional memory extension */
147 : RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL,
148 :
149 : /* Too many ways of getting the name of a function as a string */
150 : RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
151 :
152 : /* C++ (some of these are keywords in Objective-C as well, but only
153 : if they appear after a '@') */
154 : RID_BOOL, RID_WCHAR, RID_CLASS,
155 : RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
156 : RID_TEMPLATE, RID_NULL, RID_CATCH,
157 : RID_DELETE, RID_FALSE, RID_NAMESPACE,
158 : RID_NEW, RID_OFFSETOF, RID_OPERATOR,
159 : RID_THIS, RID_THROW, RID_TRUE,
160 : RID_TRY, RID_TYPENAME, RID_TYPEID,
161 : RID_USING, RID_CHAR16, RID_CHAR32,
162 :
163 : /* casts */
164 : RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
165 :
166 : /* C++ extensions */
167 : RID_ADDRESSOF,
168 : RID_BUILTIN_LAUNDER,
169 : RID_BUILTIN_BIT_CAST,
170 :
171 : #define DEFTRAIT(TCC, CODE, NAME, ARITY) \
172 : RID_##CODE,
173 : #include "cp/cp-trait.def"
174 : #undef DEFTRAIT
175 :
176 : /* C++11 */
177 : RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
178 :
179 : /* C++20 */
180 : RID_CONSTINIT, RID_CONSTEVAL,
181 :
182 : /* char8_t */
183 : RID_CHAR8,
184 :
185 : /* C++ concepts */
186 : RID_CONCEPT, RID_REQUIRES,
187 :
188 : /* C++ modules. */
189 : RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */
190 :
191 : /* C++ coroutines */
192 : RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN,
193 :
194 : /* C++ transactional memory. */
195 : RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED,
196 :
197 : /* Objective-C ("AT" reserved words - they are only keywords when
198 : they follow '@') */
199 : RID_AT_ENCODE, RID_AT_END,
200 : RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
201 : RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE,
202 : RID_AT_PROTOCOL, RID_AT_SELECTOR,
203 : RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH,
204 : RID_AT_FINALLY, RID_AT_SYNCHRONIZED,
205 : RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY,
206 : RID_AT_SYNTHESIZE, RID_AT_DYNAMIC,
207 : RID_AT_INTERFACE,
208 : RID_AT_IMPLEMENTATION,
209 :
210 : /* OpenMP */
211 : RID_OMP_ALL_MEMORY,
212 :
213 : /* Named address support, mapping the keyword to a particular named address
214 : number. Named address space 0 is reserved for the generic address. If
215 : there are more than 254 named addresses, the addr_space_t type will need
216 : to be grown from an unsigned char to unsigned short. */
217 : RID_ADDR_SPACE_0, /* generic address */
218 : RID_ADDR_SPACE_1,
219 : RID_ADDR_SPACE_2,
220 : RID_ADDR_SPACE_3,
221 : RID_ADDR_SPACE_4,
222 : RID_ADDR_SPACE_5,
223 : RID_ADDR_SPACE_6,
224 : RID_ADDR_SPACE_7,
225 : RID_ADDR_SPACE_8,
226 : RID_ADDR_SPACE_9,
227 : RID_ADDR_SPACE_10,
228 : RID_ADDR_SPACE_11,
229 : RID_ADDR_SPACE_12,
230 : RID_ADDR_SPACE_13,
231 : RID_ADDR_SPACE_14,
232 : RID_ADDR_SPACE_15,
233 :
234 : RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
235 : RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
236 :
237 : /* __intN keywords. The _N_M here doesn't correspond to the intN
238 : in the keyword; use the bitsize in int_n_t_data_t[M] for that.
239 : For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0
240 : is for __int13. */
241 :
242 : /* Note that the range to use is RID_FIRST_INT_N through
243 : RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of
244 : all RID_INT_N_* in a case statement. */
245 :
246 : RID_INT_N_0,
247 : RID_INT_N_1,
248 : RID_INT_N_2,
249 : RID_INT_N_3,
250 :
251 : RID_FIRST_INT_N = RID_INT_N_0,
252 : RID_LAST_INT_N = RID_INT_N_3,
253 :
254 : RID_MAX,
255 :
256 : RID_FIRST_MODIFIER = RID_STATIC,
257 : RID_LAST_MODIFIER = RID_ONEWAY,
258 :
259 : RID_FIRST_CXX11 = RID_CONSTEXPR,
260 : RID_LAST_CXX11 = RID_STATIC_ASSERT,
261 : RID_FIRST_CXX20 = RID_CONSTINIT,
262 : RID_LAST_CXX20 = RID_CO_RETURN,
263 : RID_FIRST_AT = RID_AT_ENCODE,
264 : RID_LAST_AT = RID_AT_IMPLEMENTATION,
265 : RID_FIRST_PQ = RID_IN,
266 : RID_LAST_PQ = RID_ONEWAY,
267 : RID_FIRST_PATTR = RID_GETTER,
268 : RID_LAST_PATTR = RID_NULL_RESETTABLE
269 : };
270 :
271 : #define OBJC_IS_AT_KEYWORD(rid) \
272 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
273 : (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
274 :
275 : #define OBJC_IS_PQ_KEYWORD(rid) \
276 : ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
277 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
278 :
279 : /* Keywords permitted in an @property attribute context. */
280 : #define OBJC_IS_PATTR_KEYWORD(rid) \
281 : ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \
282 : (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \
283 : || rid == RID_CLASS)
284 :
285 : /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as
286 : 'class') which are shared in a subtle way between Objective-C and
287 : C++. When the lexer is lexing in Objective-C/Objective-C++, if it
288 : finds '@' followed by one of these identifiers (eg, '@class'), it
289 : recognizes the whole as an Objective-C keyword. If the identifier
290 : is found elsewhere, it follows the rules of the C/C++ language.
291 : */
292 : #define OBJC_IS_CXX_KEYWORD(rid) \
293 : (rid == RID_CLASS || rid == RID_SYNCHRONIZED \
294 : || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \
295 : || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH)
296 :
297 : /* The elements of `ridpointers' are identifier nodes for the reserved
298 : type names and storage classes. It is indexed by a RID_... value. */
299 : extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
300 :
301 : /* Standard named or nameless data types of the C compiler. */
302 :
303 : enum c_tree_index
304 : {
305 : CTI_CHAR8_TYPE,
306 : CTI_CHAR16_TYPE,
307 : CTI_CHAR32_TYPE,
308 : CTI_WCHAR_TYPE,
309 : CTI_UNDERLYING_WCHAR_TYPE,
310 : CTI_WINT_TYPE,
311 : CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
312 : CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
313 : CTI_INTMAX_TYPE,
314 : CTI_UINTMAX_TYPE,
315 : CTI_WIDEST_INT_LIT_TYPE,
316 : CTI_WIDEST_UINT_LIT_TYPE,
317 :
318 : /* Types for <stdint.h>, that may not be defined on all
319 : targets. */
320 : CTI_SIG_ATOMIC_TYPE,
321 : CTI_INT8_TYPE,
322 : CTI_INT16_TYPE,
323 : CTI_INT32_TYPE,
324 : CTI_INT64_TYPE,
325 : CTI_UINT8_TYPE,
326 : CTI_UINT16_TYPE,
327 : CTI_UINT32_TYPE,
328 : CTI_UINT64_TYPE,
329 : CTI_INT_LEAST8_TYPE,
330 : CTI_INT_LEAST16_TYPE,
331 : CTI_INT_LEAST32_TYPE,
332 : CTI_INT_LEAST64_TYPE,
333 : CTI_UINT_LEAST8_TYPE,
334 : CTI_UINT_LEAST16_TYPE,
335 : CTI_UINT_LEAST32_TYPE,
336 : CTI_UINT_LEAST64_TYPE,
337 : CTI_INT_FAST8_TYPE,
338 : CTI_INT_FAST16_TYPE,
339 : CTI_INT_FAST32_TYPE,
340 : CTI_INT_FAST64_TYPE,
341 : CTI_UINT_FAST8_TYPE,
342 : CTI_UINT_FAST16_TYPE,
343 : CTI_UINT_FAST32_TYPE,
344 : CTI_UINT_FAST64_TYPE,
345 : CTI_INTPTR_TYPE,
346 : CTI_UINTPTR_TYPE,
347 :
348 : CTI_CHAR_ARRAY_TYPE,
349 : CTI_CHAR8_ARRAY_TYPE,
350 : CTI_CHAR16_ARRAY_TYPE,
351 : CTI_CHAR32_ARRAY_TYPE,
352 : CTI_WCHAR_ARRAY_TYPE,
353 : CTI_STRING_TYPE,
354 : CTI_CONST_STRING_TYPE,
355 :
356 : /* Type for boolean expressions (bool in C++, int in C). */
357 : CTI_TRUTHVALUE_TYPE,
358 : CTI_TRUTHVALUE_TRUE,
359 : CTI_TRUTHVALUE_FALSE,
360 :
361 : CTI_DEFAULT_FUNCTION_TYPE,
362 :
363 : CTI_NULL,
364 : CTI_NULLPTR,
365 : CTI_NULLPTR_TYPE,
366 :
367 : /* These are not types, but we have to look them up all the time. */
368 : CTI_FUNCTION_NAME_DECL,
369 : CTI_PRETTY_FUNCTION_NAME_DECL,
370 : CTI_C99_FUNCTION_NAME_DECL,
371 :
372 : CTI_MODULE_HWM,
373 : /* Below here entities change during compilation. */
374 :
375 : CTI_SAVED_FUNCTION_NAME_DECLS,
376 :
377 : CTI_MAX
378 : };
379 :
380 : #define C_CPP_HASHNODE(id) \
381 : (&(((struct c_common_identifier *) (id))->node))
382 : #define C_RID_CODE(id) \
383 : ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
384 : #define C_SET_RID_CODE(id, code) \
385 : (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
386 :
387 : /* Identifier part common to the C front ends. Inherits from
388 : tree_identifier, despite appearances. */
389 : struct GTY(()) c_common_identifier {
390 : struct tree_common common;
391 : struct cpp_hashnode node;
392 : };
393 :
394 : /* An entry in the reserved keyword table. */
395 :
396 : struct c_common_resword
397 : {
398 : const char *const word;
399 : ENUM_BITFIELD(rid) const rid : 16;
400 : const unsigned int disable : 32;
401 : };
402 :
403 : /* Mode used to build pointers (VOIDmode means ptr_mode). */
404 :
405 : extern machine_mode c_default_pointer_mode;
406 :
407 : /* Extra cpp_ttype values for C++. */
408 :
409 : /* A token type for template-ids. If a template-id is processed while
410 : parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token;
411 : the value of the CPP_TEMPLATE_ID is whatever was returned by
412 : cp_parser_template_id. */
413 : #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1))
414 :
415 : /* A token type for nested-name-specifiers. If a
416 : nested-name-specifier is processed while parsing tentatively, it is
417 : replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the
418 : CPP_NESTED_NAME_SPECIFIER is whatever was returned by
419 : cp_parser_nested_name_specifier_opt. */
420 : #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1))
421 :
422 : /* A token type for pre-parsed C++0x decltype. */
423 : #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1))
424 :
425 : /* A token type for pre-parsed primary-expression (lambda- or statement-). */
426 : #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1))
427 :
428 : /* The number of token types, including C++-specific ones. */
429 : #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1))
430 :
431 : /* Disable mask. Keywords are disabled if (reswords[i].disable &
432 : mask) is _true_. Thus for keywords which are present in all
433 : languages the disable field is zero. */
434 :
435 : #define D_CONLY 0x0001 /* C only (not in C++). */
436 : #define D_CXXONLY 0x0002 /* C++ only (not in C). */
437 : #define D_C99 0x0004 /* In C, C99 only. */
438 : #define D_C2X 0x0008 /* In C, C2X only. */
439 : #define D_CXX11 0x0010 /* In C++, C++11 only. */
440 : #define D_EXT 0x0020 /* GCC extension. */
441 : #define D_EXT89 0x0040 /* GCC extension incorporated in C99. */
442 : #define D_EXT11 0x0080 /* GCC extension incorporated in C2X. */
443 : #define D_ASM 0x0100 /* Disabled by -fno-asm. */
444 : #define D_OBJC 0x0200 /* In Objective C and neither C nor C++. */
445 : #define D_CXX_OBJC 0x0400 /* In Objective C, and C++, but not C. */
446 : #define D_CXXWARN 0x0800 /* In C warn with -Wcxx-compat. */
447 : #define D_CXX_CONCEPTS 0x1000 /* In C++, only with concepts. */
448 : #define D_TRANSMEM 0x2000 /* C++ transactional memory TS. */
449 : #define D_CXX_CHAR8_T 0x4000 /* In C++, only with -fchar8_t. */
450 : #define D_CXX20 0x8000 /* In C++, C++20 only. */
451 : #define D_CXX_COROUTINES 0x10000 /* In C++, only with coroutines. */
452 : #define D_CXX_MODULES 0x20000 /* In C++, only with modules. */
453 :
454 : #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS
455 : #define D_CXX_CHAR8_T_FLAGS D_CXXONLY | D_CXX_CHAR8_T
456 : #define D_CXX_MODULES_FLAGS (D_CXXONLY | D_CXX_MODULES)
457 : #define D_CXX_COROUTINES_FLAGS (D_CXXONLY | D_CXX_COROUTINES)
458 :
459 : /* The reserved keyword table. */
460 : extern const struct c_common_resword c_common_reswords[];
461 :
462 : /* The number of items in the reserved keyword table. */
463 : extern const unsigned int num_c_common_reswords;
464 :
465 : #define char8_type_node c_global_trees[CTI_CHAR8_TYPE]
466 : #define char16_type_node c_global_trees[CTI_CHAR16_TYPE]
467 : #define char32_type_node c_global_trees[CTI_CHAR32_TYPE]
468 : #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
469 : #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
470 : #define wint_type_node c_global_trees[CTI_WINT_TYPE]
471 : #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
472 : #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
473 : #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
474 : #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
475 : #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
476 : #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
477 :
478 : #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE]
479 : #define int8_type_node c_global_trees[CTI_INT8_TYPE]
480 : #define int16_type_node c_global_trees[CTI_INT16_TYPE]
481 : #define int32_type_node c_global_trees[CTI_INT32_TYPE]
482 : #define int64_type_node c_global_trees[CTI_INT64_TYPE]
483 : #define uint8_type_node c_global_trees[CTI_UINT8_TYPE]
484 : #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE]
485 : #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE]
486 : #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE]
487 : #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE]
488 : #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE]
489 : #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE]
490 : #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE]
491 : #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE]
492 : #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE]
493 : #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE]
494 : #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE]
495 : #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE]
496 : #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE]
497 : #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE]
498 : #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE]
499 : #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE]
500 : #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE]
501 : #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE]
502 : #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE]
503 : #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE]
504 : #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE]
505 :
506 : #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE]
507 : #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE]
508 : #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE]
509 :
510 : #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
511 : #define char8_array_type_node c_global_trees[CTI_CHAR8_ARRAY_TYPE]
512 : #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE]
513 : #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE]
514 : #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
515 : #define string_type_node c_global_trees[CTI_STRING_TYPE]
516 : #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
517 :
518 : #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
519 :
520 : #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
521 : #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
522 : #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
523 : #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
524 :
525 : /* The node for C++ `__null'. */
526 : #define null_node c_global_trees[CTI_NULL]
527 : /* The nodes for `nullptr'. */
528 : #define nullptr_node c_global_trees[CTI_NULLPTR]
529 : #define nullptr_type_node c_global_trees[CTI_NULLPTR_TYPE]
530 :
531 : extern GTY(()) tree c_global_trees[CTI_MAX];
532 :
533 : /* Mark which labels are explicitly declared.
534 : These may be shadowed, and may be referenced from nested functions. */
535 : #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
536 :
537 : enum c_language_kind
538 : {
539 : clk_c = 0, /* C90, C94, C99, C11 or C2X */
540 : clk_objc = 1, /* clk_c with ObjC features. */
541 : clk_cxx = 2, /* ANSI/ISO C++ */
542 : clk_objcxx = 3 /* clk_cxx with ObjC features. */
543 : };
544 :
545 : /* To test for a specific language use c_language, defined by each
546 : front end. For "ObjC features" or "not C++" use the macros. */
547 : extern c_language_kind c_language;
548 :
549 : #define c_dialect_cxx() ((c_language & clk_cxx) != 0)
550 : #define c_dialect_objc() ((c_language & clk_objc) != 0)
551 :
552 : /* The various name of operator that appears in error messages. */
553 : enum ref_operator {
554 : /* NULL */
555 : RO_NULL,
556 : /* array indexing */
557 : RO_ARRAY_INDEXING,
558 : /* unary * */
559 : RO_UNARY_STAR,
560 : /* -> */
561 : RO_ARROW,
562 : /* implicit conversion */
563 : RO_IMPLICIT_CONVERSION,
564 : /* ->* */
565 : RO_ARROW_STAR
566 : };
567 :
568 : /* Information about a statement tree. */
569 :
570 : struct GTY(()) stmt_tree_s {
571 : /* A stack of statement lists being collected. */
572 : vec<tree, va_gc> *x_cur_stmt_list;
573 :
574 : /* In C++, Nonzero if we should treat statements as full
575 : expressions. In particular, this variable is non-zero if at the
576 : end of a statement we should destroy any temporaries created
577 : during that statement. Similarly, if, at the end of a block, we
578 : should destroy any local variables in this block. Normally, this
579 : variable is nonzero, since those are the normal semantics of
580 : C++.
581 :
582 : This flag has no effect in C. */
583 : int stmts_are_full_exprs_p;
584 : };
585 :
586 : typedef struct stmt_tree_s *stmt_tree;
587 :
588 : /* Global state pertinent to the current function. Some C dialects
589 : extend this structure with additional fields. */
590 :
591 : struct GTY(()) c_language_function {
592 : /* While we are parsing the function, this contains information
593 : about the statement-tree that we are building. */
594 : struct stmt_tree_s x_stmt_tree;
595 :
596 : /* Vector of locally defined typedefs, for
597 : -Wunused-local-typedefs. */
598 : vec<tree, va_gc> *local_typedefs;
599 : };
600 :
601 : #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list)
602 :
603 : /* When building a statement-tree, this is the current statement list
604 : being collected. */
605 : #define cur_stmt_list (stmt_list_stack->last ())
606 :
607 : #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty())
608 :
609 : /* Language-specific hooks. */
610 :
611 : /* If non-NULL, this function is called after a precompile header file
612 : is loaded. */
613 : extern void (*lang_post_pch_load) (void);
614 :
615 : extern void push_file_scope (void);
616 : extern void pop_file_scope (void);
617 : extern stmt_tree current_stmt_tree (void);
618 : extern tree push_stmt_list (void);
619 : extern tree pop_stmt_list (tree);
620 : extern tree add_stmt (tree);
621 : extern void push_cleanup (tree, tree, bool);
622 :
623 : extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
624 : location_t, tree, tree);
625 : extern tree build_indirect_ref (location_t, tree, ref_operator);
626 :
627 : extern bool has_c_linkage (const_tree decl);
628 : extern bool c_decl_implicit (const_tree);
629 :
630 : /* Switches common to the C front ends. */
631 :
632 : /* Nonzero means don't output line number information. */
633 :
634 : extern char flag_no_line_commands;
635 :
636 : /* Nonzero causes -E output not to be done, but directives such as
637 : #define that have side effects are still obeyed. */
638 :
639 : extern char flag_no_output;
640 :
641 : /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
642 : 'N' or 'U' of the command line switch. */
643 :
644 : extern char flag_dump_macros;
645 :
646 : /* Nonzero means pass #include lines through to the output. */
647 :
648 : extern char flag_dump_includes;
649 :
650 : /* Nonzero means process PCH files while preprocessing. */
651 :
652 : extern bool flag_pch_preprocess;
653 :
654 : /* The file name to which we should write a precompiled header, or
655 : NULL if no header will be written in this compile. */
656 :
657 : extern const char *pch_file;
658 :
659 : /* Nonzero if an ISO standard was selected. It rejects macros in the
660 : user's namespace. */
661 :
662 : extern int flag_iso;
663 :
664 : /* C/ObjC language option variables. */
665 :
666 :
667 : /* Nonzero means allow type mismatches in conditional expressions;
668 : just make their values `void'. */
669 :
670 : extern int flag_cond_mismatch;
671 :
672 : /* Nonzero means enable C89 Amendment 1 features. */
673 :
674 : extern int flag_isoc94;
675 :
676 : /* Nonzero means use the ISO C99 (or later) dialect of C. */
677 :
678 : extern int flag_isoc99;
679 :
680 : /* Nonzero means use the ISO C11 (or later) dialect of C. */
681 :
682 : extern int flag_isoc11;
683 :
684 : /* Nonzero means use the ISO C2X dialect of C. */
685 :
686 : extern int flag_isoc2x;
687 :
688 : /* Nonzero means that we have builtin functions, and main is an int. */
689 :
690 : extern int flag_hosted;
691 :
692 : /* ObjC language option variables. */
693 :
694 :
695 : /* Tells the compiler that this is a special run. Do not perform any
696 : compiling, instead we are to test some platform dependent features
697 : and output a C header file with appropriate definitions. */
698 :
699 : extern int print_struct_values;
700 :
701 : /* Tells the compiler what is the constant string class for ObjC. */
702 :
703 : extern const char *constant_string_class_name;
704 :
705 :
706 : /* C++ language option variables. */
707 :
708 : /* The reference version of the ABI for -Wabi. */
709 :
710 : extern int warn_abi_version;
711 :
712 : /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is
713 : less than N and the other is at least N. */
714 : #define abi_compat_version_crosses(N) \
715 : (abi_version_at_least(N) \
716 : != (flag_abi_compat_version == 0 \
717 : || flag_abi_compat_version >= (N)))
718 :
719 : /* Return TRUE if one of {flag_abi_version,warn_abi_version} is
720 : less than N and the other is at least N, for use by -Wabi. */
721 : #define abi_version_crosses(N) \
722 : (abi_version_at_least(N) \
723 : != (warn_abi_version == 0 \
724 : || warn_abi_version >= (N)))
725 :
726 : /* The supported C++ dialects. */
727 :
728 : enum cxx_dialect {
729 : cxx_unset,
730 : /* C++98 with TC1 */
731 : cxx98,
732 : cxx03 = cxx98,
733 : /* C++11 */
734 : cxx0x,
735 : cxx11 = cxx0x,
736 : /* C++14 */
737 : cxx14,
738 : /* C++17 */
739 : cxx17,
740 : /* C++20 */
741 : cxx20,
742 : /* C++23 */
743 : cxx23,
744 : /* C++26 */
745 : cxx26
746 : };
747 :
748 : /* The C++ dialect being used. C++98 is the default. */
749 : extern enum cxx_dialect cxx_dialect;
750 :
751 : /* Maximum template instantiation depth. This limit is rather
752 : arbitrary, but it exists to limit the time it takes to notice
753 : excessively recursive template instantiations. */
754 :
755 : extern int max_tinst_depth;
756 :
757 : /* Nonzero means that we should not issue warnings about problems that
758 : occur when the code is executed, because the code being processed
759 : is not expected to be executed. This is set during parsing. This
760 : is used for cases like sizeof() and "0 ? a : b". This is a count,
761 : not a bool, because unexecuted expressions can nest. */
762 :
763 : extern int c_inhibit_evaluation_warnings;
764 :
765 : /* Depending on which phase of processing we are in, we may need
766 : to prefer input_location to libcpp's locations. (Specifically,
767 : after the C++ lexer is done lexing tokens, but prior to calling
768 : cpp_finish (), we need to do so. */
769 :
770 : extern bool override_libcpp_locations;
771 :
772 : /* C types are partitioned into three subsets: object, function, and
773 : incomplete types. */
774 : #define C_TYPE_OBJECT_P(type) \
775 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
776 :
777 : #define C_TYPE_INCOMPLETE_P(type) \
778 : (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
779 :
780 : #define C_TYPE_FUNCTION_P(type) \
781 : (TREE_CODE (type) == FUNCTION_TYPE)
782 :
783 : /* For convenience we define a single macro to identify the class of
784 : object or incomplete types. */
785 : #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
786 : (!C_TYPE_FUNCTION_P (type))
787 :
788 : /* Return true if TYPE is a vector type that should be subject to the GNU
789 : vector extensions (as opposed to a vector type that is used only for
790 : the purposes of defining target-specific built-in functions). */
791 :
792 : inline bool
793 250618793 : gnu_vector_type_p (const_tree type)
794 : {
795 250618793 : return VECTOR_TYPE_P (type) && !TYPE_INDIVISIBLE_P (type);
796 : }
797 :
798 : struct visibility_flags
799 : {
800 : unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
801 : unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
802 : };
803 :
804 : /* These enumerators are possible types of unsafe conversions. */
805 : enum conversion_safety {
806 : /* The conversion is safe. */
807 : SAFE_CONVERSION = 0,
808 : /* Another type of conversion with problems. */
809 : UNSAFE_OTHER,
810 : /* Conversion between signed and unsigned integers. */
811 : UNSAFE_SIGN,
812 : /* Conversions that reduce the precision of reals including conversions
813 : from reals to integers. */
814 : UNSAFE_REAL,
815 : /* Conversions from complex to reals or integers, that discard imaginary
816 : component. */
817 : UNSAFE_IMAGINARY
818 : };
819 :
820 : /* Global visibility options. */
821 : extern struct visibility_flags visibility_options;
822 :
823 : /* Attribute table common to the C front ends. */
824 : extern const struct attribute_spec c_common_attribute_table[];
825 : extern const struct attribute_spec c_common_format_attribute_table[];
826 :
827 : /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
828 : ID is the identifier to use, NAME is the string.
829 : TYPE_DEP indicates whether it depends on type of the function or not
830 : (i.e. __PRETTY_FUNCTION__). */
831 :
832 : extern tree (*make_fname_decl) (location_t, tree, int);
833 :
834 : /* In c-decl.cc and cp/tree.cc. FIXME. */
835 : extern void c_register_addr_space (const char *str, addr_space_t as);
836 :
837 : /* In c-common.cc. */
838 : extern bool in_late_binary_op;
839 : extern const char *c_addr_space_name (addr_space_t as);
840 : extern tree identifier_global_value (tree);
841 : extern tree identifier_global_tag (tree);
842 : extern bool names_builtin_p (const char *);
843 : extern tree c_linkage_bindings (tree);
844 : extern void record_builtin_type (enum rid, const char *, tree);
845 : extern void start_fname_decls (void);
846 : extern void finish_fname_decls (void);
847 : extern const char *fname_as_string (int);
848 : extern tree fname_decl (location_t, unsigned, tree);
849 :
850 : extern int check_user_alignment (const_tree, bool, bool);
851 : extern bool check_function_arguments (location_t loc, const_tree, const_tree,
852 : int, tree *, vec<location_t> *);
853 : extern void check_function_arguments_recurse (void (*)
854 : (void *, tree,
855 : unsigned HOST_WIDE_INT),
856 : void *, tree,
857 : unsigned HOST_WIDE_INT,
858 : opt_code);
859 : extern bool check_builtin_function_arguments (location_t, vec<location_t>,
860 : tree, tree, int, tree *);
861 : extern void check_function_format (const_tree, tree, int, tree *,
862 : vec<location_t> *);
863 : extern bool attribute_fallthrough_p (tree);
864 : extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
865 : extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
866 : extern bool c_common_handle_option (size_t, const char *, HOST_WIDE_INT, int,
867 : location_t,
868 : const struct cl_option_handlers *);
869 : extern bool default_handle_c_option (size_t, const char *, int);
870 : extern tree c_common_type_for_mode (machine_mode, int);
871 : extern tree c_common_type_for_size (unsigned int, int);
872 : extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
873 : int, int);
874 : extern tree c_common_unsigned_type (tree);
875 : extern tree c_common_signed_type (tree);
876 : extern tree c_common_signed_or_unsigned_type (int, tree);
877 : extern void c_common_init_ts (void);
878 : extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
879 : extern enum conversion_safety unsafe_conversion_p (tree, tree, tree, bool);
880 : extern bool decl_with_nonnull_addr_p (const_tree);
881 : extern tree c_fully_fold (tree, bool, bool *, bool = false);
882 : extern tree c_wrap_maybe_const (tree, bool);
883 : extern tree c_common_truthvalue_conversion (location_t, tree);
884 : extern void c_apply_type_quals_to_decl (int, tree);
885 : extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int);
886 : extern tree c_alignof_expr (location_t, tree);
887 : /* Print an error message for invalid operands to arith operation CODE.
888 : NOP_EXPR is used as a special case (see truthvalue_conversion). */
889 : extern void binary_op_error (rich_location *, enum tree_code, tree, tree);
890 : extern tree fix_string_type (tree);
891 : extern tree convert_and_check (location_t, tree, tree, bool = false);
892 : extern bool c_determine_visibility (tree);
893 : extern bool vector_types_compatible_elements_p (tree, tree);
894 : extern void mark_valid_location_for_stdc_pragma (bool);
895 : extern bool valid_location_for_stdc_pragma_p (void);
896 : extern void set_float_const_decimal64 (void);
897 : extern void clear_float_const_decimal64 (void);
898 : extern bool float_const_decimal64_p (void);
899 :
900 : extern bool keyword_begins_type_specifier (enum rid);
901 : extern bool keyword_is_storage_class_specifier (enum rid);
902 : extern bool keyword_is_type_qualifier (enum rid);
903 : extern bool keyword_is_decl_specifier (enum rid);
904 : extern unsigned max_align_t_align (void);
905 : extern bool cxx_fundamental_alignment_p (unsigned);
906 : extern bool pointer_to_zero_sized_aggr_p (tree);
907 : extern bool bool_promoted_to_int_p (tree);
908 : extern tree fold_for_warn (tree);
909 : extern tree c_common_get_narrower (tree, int *);
910 : extern bool get_attribute_operand (tree, unsigned HOST_WIDE_INT *);
911 : extern void c_common_finalize_early_debug (void);
912 : extern unsigned int c_strict_flex_array_level_of (tree);
913 : extern bool c_option_is_from_cpp_diagnostics (int);
914 :
915 : /* Used by convert_and_check; in front ends. */
916 : extern tree convert_init (tree, tree);
917 :
918 : #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1)
919 : #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1)
920 :
921 : /* Subroutine of build_binary_op, used for certain operations. */
922 : extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
923 :
924 : /* Return true if division or modulo op0 / op1 or op0 % op1 may be shortened.
925 : We can shorten only if we can guarantee that op0 is not signed integral
926 : minimum or op1 is not -1, because e.g. (long long) INT_MIN / -1 is
927 : well defined INT_MAX + 1LL if long long is wider than int, but INT_MIN / -1
928 : is UB. */
929 : inline bool
930 2299575 : may_shorten_divmod (tree op0, tree op1)
931 : {
932 2299575 : tree type0 = TREE_TYPE (op0);
933 2299575 : if (TYPE_UNSIGNED (type0))
934 : return true;
935 : /* A cast from narrower unsigned won't be signed integral minimum,
936 : but cast from same or wider precision unsigned could be. */
937 921383 : if (TREE_CODE (op0) == NOP_EXPR
938 272345 : && INTEGRAL_TYPE_P (TREE_TYPE (TREE_OPERAND (op0, 0)))
939 272345 : && TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op0, 0)))
940 922037 : && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op0, 0)))
941 654 : < TYPE_PRECISION (type0)))
942 : return true;
943 921267 : if (TREE_CODE (op1) == INTEGER_CST && !integer_all_onesp (op1))
944 : return true;
945 : return false;
946 : }
947 :
948 : /* Subroutine of build_binary_op, used for comparison operations.
949 : See if the operands have both been converted from subword integer types
950 : and, if so, perhaps change them both back to their original type. */
951 : extern tree shorten_compare (location_t, tree *, tree *, tree *,
952 : enum tree_code *);
953 :
954 : extern tree pointer_int_sum (location_t, enum tree_code, tree, tree,
955 : bool = true);
956 :
957 : /* Add qualifiers to a type, in the fashion for C. */
958 : extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0);
959 :
960 : /* Build tree nodes and builtin functions common to both C and C++ language
961 : frontends. */
962 : extern void c_common_nodes_and_builtins (void);
963 :
964 : extern void disable_builtin_function (const char *);
965 :
966 : extern void set_compound_literal_name (tree decl);
967 :
968 : extern tree build_va_arg (location_t, tree, tree);
969 :
970 : extern const unsigned int c_family_lang_mask;
971 : extern unsigned int c_common_option_lang_mask (void);
972 : extern void c_common_diagnostics_set_defaults (diagnostic_context *);
973 : extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
974 : extern void c_common_init_options_struct (struct gcc_options *);
975 : extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
976 : extern bool c_common_post_options (const char **);
977 : extern bool c_common_init (void);
978 : extern void c_common_finish (void);
979 : extern void c_common_parse_file (void);
980 : extern alias_set_type c_common_get_alias_set (tree);
981 : extern void c_register_builtin_type (tree, const char*);
982 : extern bool c_promoting_integer_type_p (const_tree);
983 : extern bool self_promoting_args_p (const_tree);
984 : extern tree strip_pointer_operator (tree);
985 : extern tree strip_pointer_or_array_types (tree);
986 : extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
987 :
988 : /* This is the basic parsing function. */
989 : extern void c_parse_file (void);
990 :
991 : extern void c_parse_final_cleanups (void);
992 :
993 : /* These macros provide convenient access to the various _STMT nodes. */
994 :
995 : /* Nonzero if a given STATEMENT_LIST represents the outermost binding
996 : if a statement expression. */
997 : #define STATEMENT_LIST_STMT_EXPR(NODE) \
998 : TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
999 :
1000 : /* Nonzero if a label has been added to the statement list. */
1001 : #define STATEMENT_LIST_HAS_LABEL(NODE) \
1002 : TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
1003 :
1004 : /* C_MAYBE_CONST_EXPR accessors. */
1005 : #define C_MAYBE_CONST_EXPR_PRE(NODE) \
1006 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
1007 : #define C_MAYBE_CONST_EXPR_EXPR(NODE) \
1008 : TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
1009 : #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \
1010 : TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1011 : #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \
1012 : TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
1013 : #define EXPR_INT_CONST_OPERANDS(EXPR) \
1014 : (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \
1015 : && (TREE_CODE (EXPR) == INTEGER_CST \
1016 : || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \
1017 : && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
1018 :
1019 : /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
1020 : #define DECL_C_BIT_FIELD(NODE) \
1021 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
1022 : #define SET_DECL_C_BIT_FIELD(NODE) \
1023 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
1024 : #define CLEAR_DECL_C_BIT_FIELD(NODE) \
1025 : (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1026 :
1027 : /* True if the decl was an unnamed bitfield. */
1028 : #define DECL_UNNAMED_BIT_FIELD(NODE) \
1029 : (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE))
1030 :
1031 : /* True iff TYPE is cv decltype(nullptr). */
1032 : #define NULLPTR_TYPE_P(TYPE) (TREE_CODE (TYPE) == NULLPTR_TYPE)
1033 :
1034 : /* Returns the underlying type of the given enumeration type. The
1035 : underlying type is determined in different ways, depending on the
1036 : properties of the enum:
1037 :
1038 : - In C++0x or C2x, the underlying type can be explicitly specified, e.g.,
1039 :
1040 : enum E1 : char { ... } // underlying type is char
1041 :
1042 : - In a C++0x scoped enumeration, the underlying type is int
1043 : unless otherwises specified:
1044 :
1045 : enum class E2 { ... } // underlying type is int
1046 :
1047 : - Otherwise, the underlying type is determined based on the
1048 : values of the enumerators. In this case, the
1049 : ENUM_UNDERLYING_TYPE will not be set until after the definition
1050 : of the enumeration is completed by finish_enum. */
1051 : #define ENUM_UNDERLYING_TYPE(TYPE) \
1052 : TREE_TYPE (ENUMERAL_TYPE_CHECK (TYPE))
1053 :
1054 : /* Determines whether an ENUMERAL_TYPE has an explicit
1055 : underlying type. */
1056 : #define ENUM_FIXED_UNDERLYING_TYPE_P(NODE) (TYPE_LANG_FLAG_5 (NODE))
1057 :
1058 : extern tree do_case (location_t, tree, tree, tree);
1059 : extern tree build_stmt (location_t, enum tree_code, ...);
1060 : extern tree build_real_imag_expr (location_t, enum tree_code, tree);
1061 :
1062 : /* These functions must be defined by each front-end which implements
1063 : a variant of the C language. They are used in c-common.cc. */
1064 :
1065 : extern tree build_unary_op (location_t, enum tree_code, tree, bool);
1066 : extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool);
1067 : extern tree perform_integral_promotions (tree);
1068 :
1069 : /* These functions must be defined by each front-end which implements
1070 : a variant of the C language. They are used by port files. */
1071 :
1072 : extern tree default_conversion (tree);
1073 :
1074 : /* Given two integer or real types, return the type for their sum.
1075 : Given two compatible ANSI C types, returns the merged type. */
1076 :
1077 : extern tree common_type (tree, tree);
1078 :
1079 : extern tree decl_constant_value (tree);
1080 :
1081 : /* Handle increment and decrement of boolean types. */
1082 : extern tree boolean_increment (enum tree_code, tree);
1083 :
1084 : extern int case_compare (splay_tree_key, splay_tree_key);
1085 :
1086 : extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree,
1087 : tree = NULL_TREE);
1088 : extern bool c_switch_covers_all_cases_p (splay_tree, tree);
1089 : extern bool c_block_may_fallthru (const_tree);
1090 :
1091 : extern tree build_function_call (location_t, tree, tree);
1092 :
1093 : extern tree build_function_call_vec (location_t, vec<location_t>, tree,
1094 : vec<tree, va_gc> *, vec<tree, va_gc> *,
1095 : tree = NULL_TREE);
1096 :
1097 : extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *);
1098 :
1099 : extern tree finish_label_address_expr (tree, location_t);
1100 :
1101 : /* Same function prototype, but the C and C++ front ends have
1102 : different implementations. Used in c-common.cc. */
1103 : extern tree lookup_label (tree);
1104 : extern tree lookup_name (tree);
1105 : extern bool lvalue_p (const_tree);
1106 : extern int maybe_adjust_arg_pos_for_attribute (const_tree);
1107 : extern bool instantiation_dependent_expression_p (tree);
1108 :
1109 : extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
1110 : extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
1111 : extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true);
1112 : extern tree c_build_shufflevector (location_t, tree, tree,
1113 : const vec<tree> &, bool = true);
1114 : extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true);
1115 :
1116 : extern void init_c_lex (void);
1117 :
1118 : extern void c_cpp_builtins (cpp_reader *);
1119 : extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
1120 : extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
1121 : enum cpp_warning_reason, rich_location *,
1122 : const char *, va_list *)
1123 : ATTRIBUTE_GCC_DIAG(5,0);
1124 : extern int c_common_has_attribute (cpp_reader *, bool);
1125 : extern int c_common_has_builtin (cpp_reader *);
1126 :
1127 : extern bool parse_optimize_options (tree, bool);
1128 :
1129 : /* Positive if an implicit `extern "C"' scope has just been entered;
1130 : negative if such a scope has just been exited. */
1131 : extern GTY(()) int pending_lang_change;
1132 :
1133 : /* Information recorded about each file examined during compilation. */
1134 :
1135 : struct c_fileinfo
1136 : {
1137 : int time; /* Time spent in the file. */
1138 :
1139 : /* Flags used only by C++.
1140 : INTERFACE_ONLY nonzero means that we are in an "interface" section
1141 : of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust
1142 : the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and
1143 : INTERFACE_ONLY is zero, it means that we are responsible for
1144 : exporting definitions that others might need. */
1145 : short interface_only;
1146 : short interface_unknown;
1147 : };
1148 :
1149 : struct c_fileinfo *get_fileinfo (const char *);
1150 : extern void dump_time_statistics (void);
1151 :
1152 : extern bool c_dump_tree (void *, tree);
1153 :
1154 : extern void verify_sequence_points (tree);
1155 :
1156 : extern tree fold_offsetof (tree, tree = size_type_node,
1157 : tree_code ctx = ERROR_MARK);
1158 :
1159 : extern int complete_array_type (tree *, tree, bool);
1160 : extern void complete_flexible_array_elts (tree);
1161 :
1162 : extern tree builtin_type_for_size (int, bool);
1163 :
1164 : extern void c_common_mark_addressable_vec (tree);
1165 :
1166 : extern void set_underlying_type (tree);
1167 : extern bool user_facing_original_type_p (const_tree);
1168 : extern void record_types_used_by_current_var_decl (tree);
1169 : extern vec<tree, va_gc> *make_tree_vector (void);
1170 : extern void release_tree_vector (vec<tree, va_gc> *);
1171 : extern vec<tree, va_gc> *make_tree_vector_single (tree);
1172 : extern vec<tree, va_gc> *make_tree_vector_from_list (tree);
1173 : extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree);
1174 : extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *);
1175 :
1176 : /* Used for communication between c_common_type_for_mode and
1177 : c_register_builtin_type. */
1178 : extern GTY(()) tree registered_builtin_types;
1179 :
1180 : /* Read SOURCE_DATE_EPOCH from environment to have a deterministic
1181 : timestamp to replace embedded current dates to get reproducible
1182 : results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */
1183 : extern time_t cb_get_source_date_epoch (cpp_reader *pfile);
1184 :
1185 : /* The value (as a unix timestamp) corresponds to date
1186 : "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and
1187 : __TIME__ can store. */
1188 : #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799)
1189 :
1190 : /* Callback for libcpp for offering spelling suggestions for misspelled
1191 : directives. */
1192 : extern const char *cb_get_suggestion (cpp_reader *, const char *,
1193 : const char *const *);
1194 :
1195 : extern GTY(()) string_concat_db *g_string_concat_db;
1196 :
1197 : class substring_loc;
1198 : extern const char *c_get_substring_location (const substring_loc &substr_loc,
1199 : location_t *out_loc);
1200 :
1201 : /* In c-gimplify.cc. */
1202 : typedef struct bc_state
1203 : {
1204 : tree bc_label[2];
1205 : } bc_state_t;
1206 : extern void save_bc_state (bc_state_t *);
1207 : extern void restore_bc_state (bc_state_t *);
1208 : extern tree c_genericize_control_stmt (tree *, int *, void *,
1209 : walk_tree_fn, walk_tree_lh);
1210 : extern void c_genericize (tree);
1211 : extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
1212 : extern tree c_build_bind_expr (location_t, tree, tree);
1213 :
1214 : /* In c-lex.cc. */
1215 : extern enum cpp_ttype
1216 : conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind);
1217 :
1218 : /* In c-pch.cc */
1219 : extern void pch_init (void);
1220 : extern void pch_cpp_save_state (void);
1221 : extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
1222 : extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
1223 : const char *orig);
1224 : extern void c_common_write_pch (void);
1225 : extern void c_common_no_more_pch (void);
1226 : extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
1227 :
1228 : /* In *-checksum.c */
1229 : extern const unsigned char executable_checksum[16];
1230 :
1231 : /* In c-cppbuiltin.cc */
1232 : extern void builtin_define_std (const char *macro);
1233 : extern void builtin_define_with_value (const char *, const char *, int);
1234 : extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT);
1235 : extern void builtin_define_type_sizeof (const char *, tree);
1236 : extern void c_stddef_cpp_builtins (void);
1237 : extern void fe_file_change (const line_map_ordinary *);
1238 : extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char,
1239 : rich_location *richloc);
1240 :
1241 : /* In c-ppoutput.cc */
1242 : extern void init_pp_output (FILE *);
1243 : extern void preprocess_file (cpp_reader *);
1244 : extern void pp_file_change (const line_map_ordinary *);
1245 : extern void pp_dir_change (cpp_reader *, const char *);
1246 : extern bool check_missing_format_attribute (tree, tree);
1247 : extern void c_pp_stream_token (cpp_reader *, const cpp_token *, location_t loc);
1248 :
1249 : /* In c-omp.cc */
1250 : typedef wide_int_bitmask omp_clause_mask;
1251 :
1252 : #define OMP_CLAUSE_MASK_1 omp_clause_mask (1)
1253 :
1254 : enum c_omp_clause_split
1255 : {
1256 : C_OMP_CLAUSE_SPLIT_TARGET = 0,
1257 : C_OMP_CLAUSE_SPLIT_TEAMS,
1258 : C_OMP_CLAUSE_SPLIT_DISTRIBUTE,
1259 : C_OMP_CLAUSE_SPLIT_PARALLEL,
1260 : C_OMP_CLAUSE_SPLIT_FOR,
1261 : C_OMP_CLAUSE_SPLIT_SIMD,
1262 : C_OMP_CLAUSE_SPLIT_COUNT,
1263 : C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR,
1264 : C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR,
1265 : C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR,
1266 : C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE
1267 : };
1268 :
1269 : enum c_omp_region_type
1270 : {
1271 : C_ORT_OMP = 1 << 0,
1272 : C_ORT_ACC = 1 << 1,
1273 : C_ORT_DECLARE_SIMD = 1 << 2,
1274 : C_ORT_TARGET = 1 << 3,
1275 : C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD,
1276 : C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET
1277 : };
1278 :
1279 : extern tree c_finish_omp_master (location_t, tree);
1280 : extern tree c_finish_omp_masked (location_t, tree, tree);
1281 : extern tree c_finish_omp_taskgroup (location_t, tree, tree);
1282 : extern tree c_finish_omp_critical (location_t, tree, tree, tree);
1283 : extern tree c_finish_omp_ordered (location_t, tree, tree);
1284 : extern void c_finish_omp_barrier (location_t);
1285 : extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code,
1286 : tree, tree, tree, tree, tree, tree, bool,
1287 : enum omp_memory_order, bool, bool = false);
1288 : extern bool c_omp_depend_t_p (tree);
1289 : extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind,
1290 : tree);
1291 : extern void c_finish_omp_flush (location_t, int);
1292 : extern void c_finish_omp_taskwait (location_t);
1293 : extern void c_finish_omp_taskyield (location_t);
1294 : extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree,
1295 : tree, tree, tree, tree, bool);
1296 : extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh);
1297 : extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int,
1298 : tree, tree, tree, walk_tree_lh);
1299 : extern tree c_finish_oacc_wait (location_t, tree, tree);
1300 : extern tree c_oacc_split_loop_clauses (tree, tree *, bool);
1301 : extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask,
1302 : tree, tree *);
1303 : extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree);
1304 : extern void c_omp_declare_simd_clauses_to_decls (tree, tree);
1305 : extern bool c_omp_predefined_variable (tree);
1306 : extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1307 : extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree);
1308 : extern tree c_omp_check_context_selector (location_t, tree);
1309 : extern void c_omp_mark_declare_variant (location_t, tree, tree);
1310 : extern void c_omp_adjust_map_clauses (tree, bool);
1311 :
1312 : enum c_omp_directive_kind {
1313 : C_OMP_DIR_STANDALONE,
1314 : C_OMP_DIR_CONSTRUCT,
1315 : C_OMP_DIR_DECLARATIVE,
1316 : C_OMP_DIR_UTILITY,
1317 : C_OMP_DIR_INFORMATIONAL
1318 : };
1319 :
1320 : struct c_omp_directive {
1321 : const char *first, *second, *third;
1322 : unsigned int id;
1323 : enum c_omp_directive_kind kind;
1324 : bool simd;
1325 : };
1326 :
1327 : extern const struct c_omp_directive c_omp_directives[];
1328 : extern const struct c_omp_directive *c_omp_categorize_directive (const char *,
1329 : const char *,
1330 : const char *);
1331 :
1332 : /* Return next tree in the chain for chain_next walking of tree nodes. */
1333 : inline tree
1334 44032341562 : c_tree_chain_next (tree t)
1335 : {
1336 : /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different
1337 : kind of object, never a long chain of nodes. Prefer
1338 : TYPE_NEXT_VARIANT for types. */
1339 44032341562 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON))
1340 5743376884 : return TYPE_NEXT_VARIANT (t);
1341 : /* Otherwise, if there is TREE_CHAIN, return it. */
1342 38288964678 : if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON))
1343 24663249418 : return TREE_CHAIN (t);
1344 : return NULL;
1345 : }
1346 :
1347 : /* Mask used by tm_stmt_attr. */
1348 : #define TM_STMT_ATTR_OUTER 2
1349 : #define TM_STMT_ATTR_ATOMIC 4
1350 : #define TM_STMT_ATTR_RELAXED 8
1351 :
1352 : /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these
1353 : are ordered specifically such that more restrictive attributes are
1354 : at lower bit positions. This fact is known by the C++ tm attribute
1355 : inheritance code such that least bit extraction (mask & -mask) results
1356 : in the most restrictive attribute. */
1357 : #define TM_ATTR_SAFE 1
1358 : #define TM_ATTR_CALLABLE 2
1359 : #define TM_ATTR_PURE 4
1360 : #define TM_ATTR_IRREVOCABLE 8
1361 : #define TM_ATTR_MAY_CANCEL_OUTER 16
1362 :
1363 : /* A suffix-identifier value doublet that represents user-defined literals
1364 : for C++-0x. */
1365 : enum overflow_type {
1366 : OT_UNDERFLOW = -1,
1367 : OT_NONE,
1368 : OT_OVERFLOW
1369 : };
1370 :
1371 : struct GTY(()) tree_userdef_literal {
1372 : struct tree_base base;
1373 : tree suffix_id;
1374 : tree value;
1375 : tree num_string;
1376 : enum overflow_type overflow;
1377 : };
1378 :
1379 : #define USERDEF_LITERAL_SUFFIX_ID(NODE) \
1380 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id)
1381 :
1382 : #define USERDEF_LITERAL_VALUE(NODE) \
1383 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value)
1384 :
1385 : #define USERDEF_LITERAL_OVERFLOW(NODE) \
1386 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow)
1387 :
1388 : #define USERDEF_LITERAL_NUM_STRING(NODE) \
1389 : (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string)
1390 :
1391 : #define USERDEF_LITERAL_TYPE(NODE) \
1392 : (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE)))
1393 :
1394 : extern tree build_userdef_literal (tree suffix_id, tree value,
1395 : enum overflow_type overflow,
1396 : tree num_string);
1397 :
1398 :
1399 : /* WHILE_STMT accessors. These give access to the condition of the
1400 : while statement and the body of the while statement, respectively. */
1401 : #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
1402 : #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
1403 :
1404 : /* DO_STMT accessors. These give access to the condition of the do
1405 : statement and the body of the do statement, respectively. */
1406 : #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
1407 : #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
1408 :
1409 : /* FOR_STMT accessors. These give access to the init statement,
1410 : condition, update expression, and body of the for statement,
1411 : respectively. */
1412 : #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1413 : #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1414 : #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1415 : #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1416 : #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4)
1417 :
1418 : #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1419 : #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1420 : #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1421 : #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3)
1422 : /* True if there are case labels for all possible values of switch cond, either
1423 : because there is a default: case label or because the case label ranges cover
1424 : all values. */
1425 : #define SWITCH_STMT_ALL_CASES_P(NODE) \
1426 : TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE))
1427 : /* True if the body of a switch stmt contains no BREAK_STMTs. */
1428 : #define SWITCH_STMT_NO_BREAK_P(NODE) \
1429 : TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE))
1430 :
1431 :
1432 : /* Nonzero if NODE is the target for genericization of 'break' stmts. */
1433 : #define LABEL_DECL_BREAK(NODE) \
1434 : DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE))
1435 :
1436 : /* Nonzero if NODE is the target for genericization of 'continue' stmts. */
1437 : #define LABEL_DECL_CONTINUE(NODE) \
1438 : DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE))
1439 :
1440 : extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree);
1441 :
1442 : /* Possibe cases of scalar_to_vector conversion. */
1443 : enum stv_conv {
1444 : stv_error, /* Error occurred. */
1445 : stv_nothing, /* Nothing happened. */
1446 : stv_firstarg, /* First argument must be expanded. */
1447 : stv_secondarg /* Second argument must be expanded. */
1448 : };
1449 :
1450 : extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code,
1451 : tree op0, tree op1, bool);
1452 :
1453 : extern tree find_inv_trees (tree *, int *, void *);
1454 : extern tree replace_inv_trees (tree *, int *, void *);
1455 :
1456 : extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION);
1457 : extern bool valid_array_size_p (location_t, const_tree, tree, bool = true);
1458 : extern void invalid_array_size_error (location_t, cst_size_error,
1459 : const_tree, const_tree);
1460 :
1461 : /* In c-warn.cc. */
1462 : extern void constant_expression_warning (tree);
1463 : extern void constant_expression_error (tree);
1464 : extern void overflow_warning (location_t, tree, tree = NULL_TREE);
1465 : extern void warn_logical_operator (location_t, enum tree_code, tree,
1466 : enum tree_code, tree, enum tree_code, tree);
1467 : extern void warn_tautological_cmp (const op_location_t &, enum tree_code,
1468 : tree, tree);
1469 : extern void warn_logical_not_parentheses (location_t, enum tree_code, tree,
1470 : tree);
1471 : extern bool warn_if_unused_value (const_tree, location_t, bool = false);
1472 : extern bool strict_aliasing_warning (location_t, tree, tree);
1473 : extern void sizeof_pointer_memaccess_warning (location_t *, tree,
1474 : vec<tree, va_gc> *, tree *,
1475 : bool (*) (tree, tree));
1476 : extern void check_main_parameter_types (tree decl);
1477 : extern void warnings_for_convert_and_check (location_t, tree, tree, tree);
1478 : extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool);
1479 : extern void warn_for_omitted_condop (location_t, tree);
1480 : extern bool warn_for_restrict (unsigned, tree *, unsigned);
1481 : extern void warn_for_address_or_pointer_of_packed_member (tree, tree);
1482 : extern void warn_parm_array_mismatch (location_t, tree, tree);
1483 : extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree);
1484 : extern void do_warn_array_compare (location_t, tree_code, tree, tree);
1485 :
1486 : /* Places where an lvalue, or modifiable lvalue, may be required.
1487 : Used to select diagnostic messages in lvalue_error and
1488 : readonly_error. */
1489 : enum lvalue_use {
1490 : lv_assign,
1491 : lv_increment,
1492 : lv_decrement,
1493 : lv_addressof,
1494 : lv_asm
1495 : };
1496 :
1497 : extern void lvalue_error (location_t, enum lvalue_use);
1498 : extern void invalid_indirection_error (location_t, tree, ref_operator);
1499 : extern void readonly_error (location_t, tree, enum lvalue_use);
1500 : extern void warn_array_subscript_with_type_char (location_t, tree);
1501 : extern void warn_about_parentheses (location_t,
1502 : enum tree_code,
1503 : enum tree_code, tree,
1504 : enum tree_code, tree);
1505 : extern void warn_for_unused_label (tree label);
1506 : extern void warn_for_div_by_zero (location_t, tree divisor);
1507 : extern void warn_for_memset (location_t, tree, tree, int);
1508 : extern void warn_for_sign_compare (location_t,
1509 : tree orig_op0, tree orig_op1,
1510 : tree op0, tree op1,
1511 : tree result_type,
1512 : enum tree_code resultcode);
1513 : extern void do_warn_double_promotion (tree, tree, tree, const char *,
1514 : location_t);
1515 : extern void do_warn_unused_parameter (tree);
1516 : extern void record_locally_defined_typedef (tree);
1517 : extern void maybe_record_typedef_use (tree);
1518 : extern void maybe_warn_unused_local_typedefs (void);
1519 : extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree);
1520 : extern bool maybe_warn_shift_overflow (location_t, tree, tree);
1521 : extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **);
1522 : extern bool diagnose_mismatched_attributes (tree, tree);
1523 : extern tree do_warn_duplicated_branches_r (tree *, int *, void *);
1524 : extern void warn_for_multistatement_macros (location_t, location_t,
1525 : location_t, enum rid);
1526 :
1527 : extern void check_for_xor_used_as_pow (location_t lhs_loc, tree lhs_val,
1528 : location_t operator_loc,
1529 : location_t rhs_loc, tree rhs_val);
1530 :
1531 : /* In c-attribs.cc. */
1532 : extern bool attribute_takes_identifier_p (const_tree);
1533 : extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *);
1534 : extern tree handle_unused_attribute (tree *, tree, tree, int, bool *);
1535 : extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *);
1536 : extern int parse_tm_stmt_attr (tree, int);
1537 : extern int tm_attr_to_mask (tree);
1538 : extern tree tm_mask_to_attr (int);
1539 : extern tree find_tm_attribute (tree);
1540 : extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[];
1541 : extern const struct attribute_spec::exclusions attr_noreturn_exclusions[];
1542 : extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
1543 : extern bool has_attribute (location_t, tree, tree, tree (*)(tree));
1544 : extern tree build_attr_access_from_parms (tree, bool);
1545 :
1546 : /* In c-format.cc. */
1547 : extern bool valid_format_string_type_p (tree);
1548 :
1549 : /* A bitmap of flags to positional_argument. */
1550 : enum posargflags {
1551 : /* Consider positional attribute argument value zero valid. */
1552 : POSARG_ZERO = 1,
1553 : /* Consider positional attribute argument value valid if it refers
1554 : to the ellipsis (i.e., beyond the last typed argument). */
1555 : POSARG_ELLIPSIS = 2
1556 : };
1557 :
1558 : extern tree positional_argument (const_tree, const_tree, tree &, tree_code,
1559 : int = 0, int = posargflags ());
1560 :
1561 : extern enum flt_eval_method
1562 : excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method);
1563 :
1564 : extern int c_flt_eval_method (bool ts18661_p);
1565 : extern void add_no_sanitize_value (tree node, unsigned int flags);
1566 :
1567 : extern void maybe_add_include_fixit (rich_location *, const char *, bool);
1568 : extern void maybe_suggest_missing_token_insertion (rich_location *richloc,
1569 : enum cpp_ttype token_type,
1570 : location_t prev_token_loc);
1571 : extern tree braced_lists_to_strings (tree, tree);
1572 :
1573 : #if CHECKING_P
1574 : namespace selftest {
1575 : /* Declarations for specific families of tests within c-family,
1576 : by source file, in alphabetical order. */
1577 : extern void c_diagnostic_cc_tests (void);
1578 : extern void c_format_cc_tests (void);
1579 : extern void c_indentation_cc_tests (void);
1580 : extern void c_opt_problem_cc_tests (void);
1581 : extern void c_pretty_print_cc_tests (void);
1582 : extern void c_spellcheck_cc_tests (void);
1583 :
1584 : /* The entrypoint for running all of the above tests. */
1585 : extern void c_family_tests (void);
1586 : } // namespace selftest
1587 : #endif /* #if CHECKING_P */
1588 :
1589 : #endif /* ! GCC_C_COMMON_H */
|
