1 /* Definitions for c-common.cc. 2 Copyright (C) 1987-2022 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_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 108 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 109 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, 110 RID_BUILTIN_SHUFFLEVECTOR, RID_BUILTIN_CONVERTVECTOR, RID_BUILTIN_TGMATH, 111 RID_BUILTIN_HAS_ATTRIBUTE, RID_BUILTIN_ASSOC_BARRIER, 112 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 113 114 /* TS 18661-3 keywords, in the same sequence as the TI_* values. */ 115 RID_FLOAT16, 116 RID_FLOATN_NX_FIRST = RID_FLOAT16, 117 RID_FLOAT32, 118 RID_FLOAT64, 119 RID_FLOAT128, 120 RID_FLOAT32X, 121 RID_FLOAT64X, 122 RID_FLOAT128X, 123 #define CASE_RID_FLOATN_NX \ 124 case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \ 125 case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X 126 127 RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN, 128 129 /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */ 130 RID_GIMPLE, 131 132 /* "__PHI", for parsing PHI function in GIMPLE FE. */ 133 RID_PHI, 134 135 /* "__RTL", for the RTL-parsing extension to the C frontend. */ 136 RID_RTL, 137 138 /* C11 */ 139 RID_ALIGNAS, RID_GENERIC, 140 141 /* This means to warn that this is a C++ keyword, and then treat it 142 as a normal identifier. */ 143 RID_CXX_COMPAT_WARN, 144 145 /* GNU transactional memory extension */ 146 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, 147 148 /* Too many ways of getting the name of a function as a string */ 149 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 150 151 /* C++ (some of these are keywords in Objective-C as well, but only 152 if they appear after a '@') */ 153 RID_BOOL, RID_WCHAR, RID_CLASS, 154 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 155 RID_TEMPLATE, RID_NULL, RID_CATCH, 156 RID_DELETE, RID_FALSE, RID_NAMESPACE, 157 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 158 RID_THIS, RID_THROW, RID_TRUE, 159 RID_TRY, RID_TYPENAME, RID_TYPEID, 160 RID_USING, RID_CHAR16, RID_CHAR32, 161 162 /* casts */ 163 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 164 165 /* C++ extensions */ 166 RID_ADDRESSOF, RID_BASES, 167 RID_BUILTIN_LAUNDER, RID_DIRECT_BASES, 168 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 169 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 170 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 171 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_UNIQUE_OBJ_REPRESENTATIONS, 172 RID_HAS_VIRTUAL_DESTRUCTOR, RID_BUILTIN_BIT_CAST, 173 RID_IS_ABSTRACT, RID_IS_AGGREGATE, 174 RID_IS_BASE_OF, RID_IS_CLASS, 175 RID_IS_EMPTY, RID_IS_ENUM, 176 RID_IS_FINAL, RID_IS_LAYOUT_COMPATIBLE, 177 RID_IS_LITERAL_TYPE, 178 RID_IS_POINTER_INTERCONVERTIBLE_BASE_OF, 179 RID_IS_POD, RID_IS_POLYMORPHIC, 180 RID_IS_SAME_AS, 181 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 182 RID_IS_TRIVIALLY_ASSIGNABLE, RID_IS_TRIVIALLY_CONSTRUCTIBLE, 183 RID_IS_TRIVIALLY_COPYABLE, 184 RID_IS_UNION, RID_UNDERLYING_TYPE, 185 RID_IS_ASSIGNABLE, RID_IS_CONSTRUCTIBLE, 186 RID_IS_NOTHROW_ASSIGNABLE, RID_IS_NOTHROW_CONSTRUCTIBLE, 187 188 /* C++11 */ 189 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, 190 191 /* C++20 */ 192 RID_CONSTINIT, RID_CONSTEVAL, 193 194 /* char8_t */ 195 RID_CHAR8, 196 197 /* C++ concepts */ 198 RID_CONCEPT, RID_REQUIRES, 199 200 /* C++ modules. */ 201 RID__MODULE, RID__IMPORT, RID__EXPORT, /* Internal tokens. */ 202 203 /* C++ coroutines */ 204 RID_CO_AWAIT, RID_CO_YIELD, RID_CO_RETURN, 205 206 /* C++ transactional memory. */ 207 RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED, 208 209 /* Objective-C ("AT" reserved words - they are only keywords when 210 they follow '@') */ 211 RID_AT_ENCODE, RID_AT_END, 212 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 213 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, 214 RID_AT_PROTOCOL, RID_AT_SELECTOR, 215 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 216 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 217 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, 218 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, 219 RID_AT_INTERFACE, 220 RID_AT_IMPLEMENTATION, 221 222 /* Named address support, mapping the keyword to a particular named address 223 number. Named address space 0 is reserved for the generic address. If 224 there are more than 254 named addresses, the addr_space_t type will need 225 to be grown from an unsigned char to unsigned short. */ 226 RID_ADDR_SPACE_0, /* generic address */ 227 RID_ADDR_SPACE_1, 228 RID_ADDR_SPACE_2, 229 RID_ADDR_SPACE_3, 230 RID_ADDR_SPACE_4, 231 RID_ADDR_SPACE_5, 232 RID_ADDR_SPACE_6, 233 RID_ADDR_SPACE_7, 234 RID_ADDR_SPACE_8, 235 RID_ADDR_SPACE_9, 236 RID_ADDR_SPACE_10, 237 RID_ADDR_SPACE_11, 238 RID_ADDR_SPACE_12, 239 RID_ADDR_SPACE_13, 240 RID_ADDR_SPACE_14, 241 RID_ADDR_SPACE_15, 242 243 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 244 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 245 246 /* __intN keywords. The _N_M here doesn't correspond to the intN 247 in the keyword; use the bitsize in int_n_t_data_t[M] for that. 248 For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0 249 is for __int13. */ 250 251 /* Note that the range to use is RID_FIRST_INT_N through 252 RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.cc has a list of 253 all RID_INT_N_* in a case statement. */ 254 255 RID_INT_N_0, 256 RID_INT_N_1, 257 RID_INT_N_2, 258 RID_INT_N_3, 259 260 RID_FIRST_INT_N = RID_INT_N_0, 261 RID_LAST_INT_N = RID_INT_N_3, 262 263 RID_MAX, 264 265 RID_FIRST_MODIFIER = RID_STATIC, 266 RID_LAST_MODIFIER = RID_ONEWAY, 267 268 RID_FIRST_CXX11 = RID_CONSTEXPR, 269 RID_LAST_CXX11 = RID_STATIC_ASSERT, 270 RID_FIRST_CXX20 = RID_CONSTINIT, 271 RID_LAST_CXX20 = RID_CONSTINIT, 272 RID_FIRST_AT = RID_AT_ENCODE, 273 RID_LAST_AT = RID_AT_IMPLEMENTATION, 274 RID_FIRST_PQ = RID_IN, 275 RID_LAST_PQ = RID_ONEWAY, 276 RID_FIRST_PATTR = RID_GETTER, 277 RID_LAST_PATTR = RID_NULL_RESETTABLE 278 }; 279 280 #define OBJC_IS_AT_KEYWORD(rid) \ 281 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 282 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 283 284 #define OBJC_IS_PQ_KEYWORD(rid) \ 285 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 286 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 287 288 /* Keywords permitted in an @property attribute context. */ 289 #define OBJC_IS_PATTR_KEYWORD(rid) \ 290 ((((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ 291 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR)) \ 292 || rid == RID_CLASS) 293 294 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as 295 'class') which are shared in a subtle way between Objective-C and 296 C++. When the lexer is lexing in Objective-C/Objective-C++, if it 297 finds '@' followed by one of these identifiers (eg, '@class'), it 298 recognizes the whole as an Objective-C keyword. If the identifier 299 is found elsewhere, it follows the rules of the C/C++ language. 300 */ 301 #define OBJC_IS_CXX_KEYWORD(rid) \ 302 (rid == RID_CLASS || rid == RID_SYNCHRONIZED \ 303 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ 304 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) 305 306 /* The elements of `ridpointers' are identifier nodes for the reserved 307 type names and storage classes. It is indexed by a RID_... value. */ 308 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 309 310 /* Standard named or nameless data types of the C compiler. */ 311 312 enum c_tree_index 313 { 314 CTI_CHAR8_TYPE, 315 CTI_CHAR16_TYPE, 316 CTI_CHAR32_TYPE, 317 CTI_WCHAR_TYPE, 318 CTI_UNDERLYING_WCHAR_TYPE, 319 CTI_WINT_TYPE, 320 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 321 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 322 CTI_INTMAX_TYPE, 323 CTI_UINTMAX_TYPE, 324 CTI_WIDEST_INT_LIT_TYPE, 325 CTI_WIDEST_UINT_LIT_TYPE, 326 327 /* Types for <stdint.h>, that may not be defined on all 328 targets. */ 329 CTI_SIG_ATOMIC_TYPE, 330 CTI_INT8_TYPE, 331 CTI_INT16_TYPE, 332 CTI_INT32_TYPE, 333 CTI_INT64_TYPE, 334 CTI_UINT8_TYPE, 335 CTI_UINT16_TYPE, 336 CTI_UINT32_TYPE, 337 CTI_UINT64_TYPE, 338 CTI_INT_LEAST8_TYPE, 339 CTI_INT_LEAST16_TYPE, 340 CTI_INT_LEAST32_TYPE, 341 CTI_INT_LEAST64_TYPE, 342 CTI_UINT_LEAST8_TYPE, 343 CTI_UINT_LEAST16_TYPE, 344 CTI_UINT_LEAST32_TYPE, 345 CTI_UINT_LEAST64_TYPE, 346 CTI_INT_FAST8_TYPE, 347 CTI_INT_FAST16_TYPE, 348 CTI_INT_FAST32_TYPE, 349 CTI_INT_FAST64_TYPE, 350 CTI_UINT_FAST8_TYPE, 351 CTI_UINT_FAST16_TYPE, 352 CTI_UINT_FAST32_TYPE, 353 CTI_UINT_FAST64_TYPE, 354 CTI_INTPTR_TYPE, 355 CTI_UINTPTR_TYPE, 356 357 CTI_CHAR_ARRAY_TYPE, 358 CTI_CHAR8_ARRAY_TYPE, 359 CTI_CHAR16_ARRAY_TYPE, 360 CTI_CHAR32_ARRAY_TYPE, 361 CTI_WCHAR_ARRAY_TYPE, 362 CTI_STRING_TYPE, 363 CTI_CONST_STRING_TYPE, 364 365 /* Type for boolean expressions (bool in C++, int in C). */ 366 CTI_TRUTHVALUE_TYPE, 367 CTI_TRUTHVALUE_TRUE, 368 CTI_TRUTHVALUE_FALSE, 369 370 CTI_DEFAULT_FUNCTION_TYPE, 371 372 CTI_NULL, 373 374 /* These are not types, but we have to look them up all the time. */ 375 CTI_FUNCTION_NAME_DECL, 376 CTI_PRETTY_FUNCTION_NAME_DECL, 377 CTI_C99_FUNCTION_NAME_DECL, 378 379 CTI_MODULE_HWM, 380 /* Below here entities change during compilation. */ 381 382 CTI_SAVED_FUNCTION_NAME_DECLS, 383 384 CTI_MAX 385 }; 386 387 #define C_CPP_HASHNODE(id) \ 388 (&(((struct c_common_identifier *) (id))->node)) 389 #define C_RID_CODE(id) \ 390 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 391 #define C_SET_RID_CODE(id, code) \ 392 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 393 394 /* Identifier part common to the C front ends. Inherits from 395 tree_identifier, despite appearances. */ 396 struct GTY(()) c_common_identifier { 397 struct tree_common common; 398 struct cpp_hashnode node; 399 }; 400 401 /* An entry in the reserved keyword table. */ 402 403 struct c_common_resword 404 { 405 const char *const word; 406 ENUM_BITFIELD(rid) const rid : 16; 407 const unsigned int disable : 16; 408 }; 409 410 /* Mode used to build pointers (VOIDmode means ptr_mode). */ 411 412 extern machine_mode c_default_pointer_mode; 413 414 /* Extra cpp_ttype values for C++. */ 415 416 /* A token type for template-ids. If a template-id is processed while 417 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; 418 the value of the CPP_TEMPLATE_ID is whatever was returned by 419 cp_parser_template_id. */ 420 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) 421 422 /* A token type for nested-name-specifiers. If a 423 nested-name-specifier is processed while parsing tentatively, it is 424 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the 425 CPP_NESTED_NAME_SPECIFIER is whatever was returned by 426 cp_parser_nested_name_specifier_opt. */ 427 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) 428 429 /* A token type for pre-parsed C++0x decltype. */ 430 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) 431 432 /* A token type for pre-parsed primary-expression (lambda- or statement-). */ 433 #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1)) 434 435 /* The number of token types, including C++-specific ones. */ 436 #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1)) 437 438 /* Disable mask. Keywords are disabled if (reswords[i].disable & 439 mask) is _true_. Thus for keywords which are present in all 440 languages the disable field is zero. */ 441 442 #define D_CONLY 0x0001 /* C only (not in C++). */ 443 #define D_CXXONLY 0x0002 /* C++ only (not in C). */ 444 #define D_C99 0x0004 /* In C, C99 only. */ 445 #define D_CXX11 0x0008 /* In C++, C++11 only. */ 446 #define D_EXT 0x0010 /* GCC extension. */ 447 #define D_EXT89 0x0020 /* GCC extension incorporated in C99. */ 448 #define D_ASM 0x0040 /* Disabled by -fno-asm. */ 449 #define D_OBJC 0x0080 /* In Objective C and neither C nor C++. */ 450 #define D_CXX_OBJC 0x0100 /* In Objective C, and C++, but not C. */ 451 #define D_CXXWARN 0x0200 /* In C warn with -Wcxx-compat. */ 452 #define D_CXX_CONCEPTS 0x0400 /* In C++, only with concepts. */ 453 #define D_TRANSMEM 0X0800 /* C++ transactional memory TS. */ 454 #define D_CXX_CHAR8_T 0X1000 /* In C++, only with -fchar8_t. */ 455 #define D_CXX20 0x2000 /* In C++, C++20 only. */ 456 #define D_CXX_COROUTINES 0x4000 /* In C++, only with coroutines. */ 457 #define D_CXX_MODULES 0x8000 /* In C++, only with modules. */ 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] 532 533 extern GTY(()) tree c_global_trees[CTI_MAX]; 534 535 /* Mark which labels are explicitly declared. 536 These may be shadowed, and may be referenced from nested functions. */ 537 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 538 539 enum c_language_kind 540 { 541 clk_c = 0, /* C90, C94, C99, C11 or C2X */ 542 clk_objc = 1, /* clk_c with ObjC features. */ 543 clk_cxx = 2, /* ANSI/ISO C++ */ 544 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 545 }; 546 547 /* To test for a specific language use c_language, defined by each 548 front end. For "ObjC features" or "not C++" use the macros. */ 549 extern c_language_kind c_language; 550 551 #define c_dialect_cxx() ((c_language & clk_cxx) != 0) 552 #define c_dialect_objc() ((c_language & clk_objc) != 0) 553 554 /* The various name of operator that appears in error messages. */ 555 enum ref_operator { 556 /* NULL */ 557 RO_NULL, 558 /* array indexing */ 559 RO_ARRAY_INDEXING, 560 /* unary * */ 561 RO_UNARY_STAR, 562 /* -> */ 563 RO_ARROW, 564 /* implicit conversion */ 565 RO_IMPLICIT_CONVERSION, 566 /* ->* */ 567 RO_ARROW_STAR 568 }; 569 570 /* Information about a statement tree. */ 571 572 struct GTY(()) stmt_tree_s { 573 /* A stack of statement lists being collected. */ 574 vec<tree, va_gc> *x_cur_stmt_list; 575 576 /* In C++, Nonzero if we should treat statements as full 577 expressions. In particular, this variable is non-zero if at the 578 end of a statement we should destroy any temporaries created 579 during that statement. Similarly, if, at the end of a block, we 580 should destroy any local variables in this block. Normally, this 581 variable is nonzero, since those are the normal semantics of 582 C++. 583 584 This flag has no effect in C. */ 585 int stmts_are_full_exprs_p; 586 }; 587 588 typedef struct stmt_tree_s *stmt_tree; 589 590 /* Global state pertinent to the current function. Some C dialects 591 extend this structure with additional fields. */ 592 593 struct GTY(()) c_language_function { 594 /* While we are parsing the function, this contains information 595 about the statement-tree that we are building. */ 596 struct stmt_tree_s x_stmt_tree; 597 598 /* Vector of locally defined typedefs, for 599 -Wunused-local-typedefs. */ 600 vec<tree, va_gc> *local_typedefs; 601 }; 602 603 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) 604 605 /* When building a statement-tree, this is the current statement list 606 being collected. */ 607 #define cur_stmt_list (stmt_list_stack->last ()) 608 609 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) 610 611 /* Language-specific hooks. */ 612 613 /* If non-NULL, this function is called after a precompile header file 614 is loaded. */ 615 extern void (*lang_post_pch_load) (void); 616 617 extern void push_file_scope (void); 618 extern void pop_file_scope (void); 619 extern stmt_tree current_stmt_tree (void); 620 extern tree push_stmt_list (void); 621 extern tree pop_stmt_list (tree); 622 extern tree add_stmt (tree); 623 extern void push_cleanup (tree, tree, bool); 624 625 extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 626 location_t, tree, tree); 627 extern tree build_indirect_ref (location_t, tree, ref_operator); 628 629 extern bool has_c_linkage (const_tree decl); 630 extern bool c_decl_implicit (const_tree); 631 632 /* Switches common to the C front ends. */ 634 635 /* Nonzero means don't output line number information. */ 636 637 extern char flag_no_line_commands; 638 639 /* Nonzero causes -E output not to be done, but directives such as 640 #define that have side effects are still obeyed. */ 641 642 extern char flag_no_output; 643 644 /* Nonzero means dump macros in some fashion; contains the 'D', 'M', 645 'N' or 'U' of the command line switch. */ 646 647 extern char flag_dump_macros; 648 649 /* Nonzero means pass #include lines through to the output. */ 650 651 extern char flag_dump_includes; 652 653 /* Nonzero means process PCH files while preprocessing. */ 654 655 extern bool flag_pch_preprocess; 656 657 /* The file name to which we should write a precompiled header, or 658 NULL if no header will be written in this compile. */ 659 660 extern const char *pch_file; 661 662 /* Nonzero if an ISO standard was selected. It rejects macros in the 663 user's namespace. */ 664 665 extern int flag_iso; 666 667 /* C/ObjC language option variables. */ 668 669 670 /* Nonzero means allow type mismatches in conditional expressions; 671 just make their values `void'. */ 672 673 extern int flag_cond_mismatch; 674 675 /* Nonzero means enable C89 Amendment 1 features. */ 676 677 extern int flag_isoc94; 678 679 /* Nonzero means use the ISO C99 (or later) dialect of C. */ 680 681 extern int flag_isoc99; 682 683 /* Nonzero means use the ISO C11 (or later) dialect of C. */ 684 685 extern int flag_isoc11; 686 687 /* Nonzero means use the ISO C2X dialect of C. */ 688 689 extern int flag_isoc2x; 690 691 /* Nonzero means that we have builtin functions, and main is an int. */ 692 693 extern int flag_hosted; 694 695 /* ObjC language option variables. */ 696 697 698 /* Tells the compiler that this is a special run. Do not perform any 699 compiling, instead we are to test some platform dependent features 700 and output a C header file with appropriate definitions. */ 701 702 extern int print_struct_values; 703 704 /* Tells the compiler what is the constant string class for ObjC. */ 705 706 extern const char *constant_string_class_name; 707 708 709 /* C++ language option variables. */ 710 711 /* The reference version of the ABI for -Wabi. */ 712 713 extern int warn_abi_version; 714 715 /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is 716 less than N and the other is at least N. */ 717 #define abi_compat_version_crosses(N) \ 718 (abi_version_at_least(N) \ 719 != (flag_abi_compat_version == 0 \ 720 || flag_abi_compat_version >= (N))) 721 722 /* Return TRUE if one of {flag_abi_version,warn_abi_version} is 723 less than N and the other is at least N, for use by -Wabi. */ 724 #define abi_version_crosses(N) \ 725 (abi_version_at_least(N) \ 726 != (warn_abi_version == 0 \ 727 || warn_abi_version >= (N))) 728 729 /* The supported C++ dialects. */ 730 731 enum cxx_dialect { 732 cxx_unset, 733 /* C++98 with TC1 */ 734 cxx98, 735 cxx03 = cxx98, 736 /* C++11 */ 737 cxx0x, 738 cxx11 = cxx0x, 739 /* C++14 */ 740 cxx14, 741 /* C++17 */ 742 cxx17, 743 /* C++20 */ 744 cxx20, 745 /* C++23 */ 746 cxx23 747 }; 748 749 /* The C++ dialect being used. C++98 is the default. */ 750 extern enum cxx_dialect cxx_dialect; 751 752 /* Maximum template instantiation depth. This limit is rather 753 arbitrary, but it exists to limit the time it takes to notice 754 excessively recursive template instantiations. */ 755 756 extern int max_tinst_depth; 757 758 /* Nonzero means that we should not issue warnings about problems that 759 occur when the code is executed, because the code being processed 760 is not expected to be executed. This is set during parsing. This 761 is used for cases like sizeof() and "0 ? a : b". This is a count, 762 not a bool, because unexecuted expressions can nest. */ 763 764 extern int c_inhibit_evaluation_warnings; 765 766 /* Whether lexing has been completed, so subsequent preprocessor 767 errors should use the compiler's input_location. */ 768 769 extern bool done_lexing; 770 771 /* C types are partitioned into three subsets: object, function, and 772 incomplete types. */ 773 #define C_TYPE_OBJECT_P(type) \ 774 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 775 776 #define C_TYPE_INCOMPLETE_P(type) \ 777 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 778 779 #define C_TYPE_FUNCTION_P(type) \ 780 (TREE_CODE (type) == FUNCTION_TYPE) 781 782 /* For convenience we define a single macro to identify the class of 783 object or incomplete types. */ 784 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 785 (!C_TYPE_FUNCTION_P (type)) 786 787 /* Return true if TYPE is a vector type that should be subject to the GNU 788 vector extensions (as opposed to a vector type that is used only for 789 the purposes of defining target-specific built-in functions). */ 790 791 inline bool 792 gnu_vector_type_p (const_tree type) 793 { 794 return TREE_CODE (type) == VECTOR_TYPE && !TYPE_INDIVISIBLE_P (type); 795 } 796 797 struct visibility_flags 798 { 799 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ 800 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ 801 }; 802 803 /* These enumerators are possible types of unsafe conversions. */ 804 enum conversion_safety { 805 /* The conversion is safe. */ 806 SAFE_CONVERSION = 0, 807 /* Another type of conversion with problems. */ 808 UNSAFE_OTHER, 809 /* Conversion between signed and unsigned integers. */ 810 UNSAFE_SIGN, 811 /* Conversions that reduce the precision of reals including conversions 812 from reals to integers. */ 813 UNSAFE_REAL, 814 /* Conversions from complex to reals or integers, that discard imaginary 815 component. */ 816 UNSAFE_IMAGINARY 817 }; 818 819 /* Global visibility options. */ 820 extern struct visibility_flags visibility_options; 821 822 /* Attribute table common to the C front ends. */ 823 extern const struct attribute_spec c_common_attribute_table[]; 824 extern const struct attribute_spec c_common_format_attribute_table[]; 825 826 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 827 ID is the identifier to use, NAME is the string. 828 TYPE_DEP indicates whether it depends on type of the function or not 829 (i.e. __PRETTY_FUNCTION__). */ 830 831 extern tree (*make_fname_decl) (location_t, tree, int); 832 833 /* In c-decl.cc and cp/tree.cc. FIXME. */ 834 extern void c_register_addr_space (const char *str, addr_space_t as); 835 836 /* In c-common.cc. */ 837 extern bool in_late_binary_op; 838 extern const char *c_addr_space_name (addr_space_t as); 839 extern tree identifier_global_value (tree); 840 extern tree identifier_global_tag (tree); 841 extern bool names_builtin_p (const char *); 842 extern tree c_linkage_bindings (tree); 843 extern void record_builtin_type (enum rid, const char *, tree); 844 extern tree build_void_list_node (void); 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); 912 913 /* Used by convert_and_check; in front ends. */ 914 extern tree convert_init (tree, tree); 915 916 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1) 917 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1) 918 919 /* Subroutine of build_binary_op, used for certain operations. */ 920 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 921 922 /* Subroutine of build_binary_op, used for comparison operations. 923 See if the operands have both been converted from subword integer types 924 and, if so, perhaps change them both back to their original type. */ 925 extern tree shorten_compare (location_t, tree *, tree *, tree *, 926 enum tree_code *); 927 928 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree, 929 bool = true); 930 931 /* Add qualifiers to a type, in the fashion for C. */ 932 extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0); 933 934 /* Build tree nodes and builtin functions common to both C and C++ language 935 frontends. */ 936 extern void c_common_nodes_and_builtins (void); 937 938 extern void disable_builtin_function (const char *); 939 940 extern void set_compound_literal_name (tree decl); 941 942 extern tree build_va_arg (location_t, tree, tree); 943 944 extern const unsigned int c_family_lang_mask; 945 extern unsigned int c_common_option_lang_mask (void); 946 extern void c_common_diagnostics_set_defaults (diagnostic_context *); 947 extern bool c_common_complain_wrong_lang_p (const struct cl_option *); 948 extern void c_common_init_options_struct (struct gcc_options *); 949 extern void c_common_init_options (unsigned int, struct cl_decoded_option *); 950 extern bool c_common_post_options (const char **); 951 extern bool c_common_init (void); 952 extern void c_common_finish (void); 953 extern void c_common_parse_file (void); 954 extern FILE *get_dump_info (int, dump_flags_t *); 955 extern alias_set_type c_common_get_alias_set (tree); 956 extern void c_register_builtin_type (tree, const char*); 957 extern bool c_promoting_integer_type_p (const_tree); 958 extern bool self_promoting_args_p (const_tree); 959 extern tree strip_pointer_operator (tree); 960 extern tree strip_pointer_or_array_types (tree); 961 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 962 963 /* This is the basic parsing function. */ 964 extern void c_parse_file (void); 965 966 extern void c_parse_final_cleanups (void); 967 968 /* These macros provide convenient access to the various _STMT nodes. */ 969 970 /* Nonzero if a given STATEMENT_LIST represents the outermost binding 971 if a statement expression. */ 972 #define STATEMENT_LIST_STMT_EXPR(NODE) \ 973 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 974 975 /* Nonzero if a label has been added to the statement list. */ 976 #define STATEMENT_LIST_HAS_LABEL(NODE) \ 977 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 978 979 /* C_MAYBE_CONST_EXPR accessors. */ 980 #define C_MAYBE_CONST_EXPR_PRE(NODE) \ 981 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 982 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 983 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 984 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 985 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 986 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 987 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 988 #define EXPR_INT_CONST_OPERANDS(EXPR) \ 989 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 990 && (TREE_CODE (EXPR) == INTEGER_CST \ 991 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 992 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 993 994 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 995 #define DECL_C_BIT_FIELD(NODE) \ 996 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 997 #define SET_DECL_C_BIT_FIELD(NODE) \ 998 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 999 #define CLEAR_DECL_C_BIT_FIELD(NODE) \ 1000 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 1001 1002 /* True if the decl was an unnamed bitfield. */ 1003 #define DECL_UNNAMED_BIT_FIELD(NODE) \ 1004 (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE)) 1005 1006 extern tree do_case (location_t, tree, tree); 1007 extern tree build_stmt (location_t, enum tree_code, ...); 1008 extern tree build_real_imag_expr (location_t, enum tree_code, tree); 1009 1010 /* These functions must be defined by each front-end which implements 1011 a variant of the C language. They are used in c-common.cc. */ 1012 1013 extern tree build_unary_op (location_t, enum tree_code, tree, bool); 1014 extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool); 1015 extern tree perform_integral_promotions (tree); 1016 1017 /* These functions must be defined by each front-end which implements 1018 a variant of the C language. They are used by port files. */ 1019 1020 extern tree default_conversion (tree); 1021 1022 /* Given two integer or real types, return the type for their sum. 1023 Given two compatible ANSI C types, returns the merged type. */ 1024 1025 extern tree common_type (tree, tree); 1026 1027 extern tree decl_constant_value (tree); 1028 1029 /* Handle increment and decrement of boolean types. */ 1030 extern tree boolean_increment (enum tree_code, tree); 1031 1032 extern int case_compare (splay_tree_key, splay_tree_key); 1033 1034 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree); 1035 extern bool c_switch_covers_all_cases_p (splay_tree, tree); 1036 extern bool c_block_may_fallthru (const_tree); 1037 1038 extern tree build_function_call (location_t, tree, tree); 1039 1040 extern tree build_function_call_vec (location_t, vec<location_t>, tree, 1041 vec<tree, va_gc> *, vec<tree, va_gc> *, 1042 tree = NULL_TREE); 1043 1044 extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *); 1045 1046 extern tree finish_label_address_expr (tree, location_t); 1047 1048 /* Same function prototype, but the C and C++ front ends have 1049 different implementations. Used in c-common.cc. */ 1050 extern tree lookup_label (tree); 1051 extern tree lookup_name (tree); 1052 extern bool lvalue_p (const_tree); 1053 extern bool instantiation_dependent_expression_p (tree); 1054 1055 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 1056 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 1057 extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true); 1058 extern tree c_build_shufflevector (location_t, tree, tree, 1059 const vec<tree> &, bool = true); 1060 extern tree c_build_vec_convert (location_t, tree, location_t, tree, bool = true); 1061 1062 extern void init_c_lex (void); 1063 1064 extern void c_cpp_builtins (cpp_reader *); 1065 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 1066 extern bool c_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level, 1067 enum cpp_warning_reason, rich_location *, 1068 const char *, va_list *) 1069 ATTRIBUTE_GCC_DIAG(5,0); 1070 extern int c_common_has_attribute (cpp_reader *, bool); 1071 extern int c_common_has_builtin (cpp_reader *); 1072 1073 extern bool parse_optimize_options (tree, bool); 1074 1075 /* Positive if an implicit `extern "C"' scope has just been entered; 1076 negative if such a scope has just been exited. */ 1077 extern GTY(()) int pending_lang_change; 1078 1079 /* Information recorded about each file examined during compilation. */ 1080 1081 struct c_fileinfo 1082 { 1083 int time; /* Time spent in the file. */ 1084 1085 /* Flags used only by C++. 1086 INTERFACE_ONLY nonzero means that we are in an "interface" section 1087 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 1088 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 1089 INTERFACE_ONLY is zero, it means that we are responsible for 1090 exporting definitions that others might need. */ 1091 short interface_only; 1092 short interface_unknown; 1093 }; 1094 1095 struct c_fileinfo *get_fileinfo (const char *); 1096 extern void dump_time_statistics (void); 1097 1098 extern bool c_dump_tree (void *, tree); 1099 1100 extern void verify_sequence_points (tree); 1101 1102 extern tree fold_offsetof (tree, tree = size_type_node, 1103 tree_code ctx = ERROR_MARK); 1104 1105 extern int complete_array_type (tree *, tree, bool); 1106 extern void complete_flexible_array_elts (tree); 1107 1108 extern tree builtin_type_for_size (int, bool); 1109 1110 extern void c_common_mark_addressable_vec (tree); 1111 1112 extern void set_underlying_type (tree); 1113 extern bool user_facing_original_type_p (const_tree); 1114 extern void record_types_used_by_current_var_decl (tree); 1115 extern vec<tree, va_gc> *make_tree_vector (void); 1116 extern void release_tree_vector (vec<tree, va_gc> *); 1117 extern vec<tree, va_gc> *make_tree_vector_single (tree); 1118 extern vec<tree, va_gc> *make_tree_vector_from_list (tree); 1119 extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree); 1120 extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); 1121 1122 /* Used for communication between c_common_type_for_mode and 1123 c_register_builtin_type. */ 1124 extern GTY(()) tree registered_builtin_types; 1125 1126 /* Read SOURCE_DATE_EPOCH from environment to have a deterministic 1127 timestamp to replace embedded current dates to get reproducible 1128 results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */ 1129 extern time_t cb_get_source_date_epoch (cpp_reader *pfile); 1130 1131 /* The value (as a unix timestamp) corresponds to date 1132 "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and 1133 __TIME__ can store. */ 1134 #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799) 1135 1136 /* Callback for libcpp for offering spelling suggestions for misspelled 1137 directives. */ 1138 extern const char *cb_get_suggestion (cpp_reader *, const char *, 1139 const char *const *); 1140 1141 extern GTY(()) string_concat_db *g_string_concat_db; 1142 1143 class substring_loc; 1144 extern const char *c_get_substring_location (const substring_loc &substr_loc, 1145 location_t *out_loc); 1146 1147 /* In c-gimplify.cc. */ 1148 typedef struct bc_state 1149 { 1150 tree bc_label[2]; 1151 } bc_state_t; 1152 extern void save_bc_state (bc_state_t *); 1153 extern void restore_bc_state (bc_state_t *); 1154 extern tree c_genericize_control_stmt (tree *, int *, void *, 1155 walk_tree_fn, walk_tree_lh); 1156 extern void c_genericize (tree); 1157 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1158 extern tree c_build_bind_expr (location_t, tree, tree); 1159 1160 /* In c-lex.cc. */ 1161 extern enum cpp_ttype 1162 conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind); 1163 1164 /* In c-pch.cc */ 1165 extern void pch_init (void); 1166 extern void pch_cpp_save_state (void); 1167 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1168 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1169 const char *orig); 1170 extern void c_common_write_pch (void); 1171 extern void c_common_no_more_pch (void); 1172 extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1173 1174 /* In *-checksum.c */ 1175 extern const unsigned char executable_checksum[16]; 1176 1177 /* In c-cppbuiltin.cc */ 1178 extern void builtin_define_std (const char *macro); 1179 extern void builtin_define_with_value (const char *, const char *, int); 1180 extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT); 1181 extern void builtin_define_type_sizeof (const char *, tree); 1182 extern void c_stddef_cpp_builtins (void); 1183 extern void fe_file_change (const line_map_ordinary *); 1184 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char, 1185 rich_location *richloc); 1186 1187 /* In c-ppoutput.cc */ 1188 extern void init_pp_output (FILE *); 1189 extern void preprocess_file (cpp_reader *); 1190 extern void pp_file_change (const line_map_ordinary *); 1191 extern void pp_dir_change (cpp_reader *, const char *); 1192 extern bool check_missing_format_attribute (tree, tree); 1193 1194 /* In c-omp.cc */ 1195 typedef wide_int_bitmask omp_clause_mask; 1196 1197 #define OMP_CLAUSE_MASK_1 omp_clause_mask (1) 1198 1199 enum c_omp_clause_split 1200 { 1201 C_OMP_CLAUSE_SPLIT_TARGET = 0, 1202 C_OMP_CLAUSE_SPLIT_TEAMS, 1203 C_OMP_CLAUSE_SPLIT_DISTRIBUTE, 1204 C_OMP_CLAUSE_SPLIT_PARALLEL, 1205 C_OMP_CLAUSE_SPLIT_FOR, 1206 C_OMP_CLAUSE_SPLIT_SIMD, 1207 C_OMP_CLAUSE_SPLIT_COUNT, 1208 C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR, 1209 C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR, 1210 C_OMP_CLAUSE_SPLIT_LOOP = C_OMP_CLAUSE_SPLIT_FOR, 1211 C_OMP_CLAUSE_SPLIT_MASKED = C_OMP_CLAUSE_SPLIT_DISTRIBUTE 1212 }; 1213 1214 enum c_omp_region_type 1215 { 1216 C_ORT_OMP = 1 << 0, 1217 C_ORT_ACC = 1 << 1, 1218 C_ORT_DECLARE_SIMD = 1 << 2, 1219 C_ORT_TARGET = 1 << 3, 1220 C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD, 1221 C_ORT_OMP_TARGET = C_ORT_OMP | C_ORT_TARGET 1222 }; 1223 1224 extern tree c_finish_omp_master (location_t, tree); 1225 extern tree c_finish_omp_masked (location_t, tree, tree); 1226 extern tree c_finish_omp_taskgroup (location_t, tree, tree); 1227 extern tree c_finish_omp_critical (location_t, tree, tree, tree); 1228 extern tree c_finish_omp_ordered (location_t, tree, tree); 1229 extern void c_finish_omp_barrier (location_t); 1230 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, 1231 tree, tree, tree, tree, tree, tree, bool, 1232 enum omp_memory_order, bool, bool = false); 1233 extern bool c_omp_depend_t_p (tree); 1234 extern void c_finish_omp_depobj (location_t, tree, enum omp_clause_depend_kind, 1235 tree); 1236 extern void c_finish_omp_flush (location_t, int); 1237 extern void c_finish_omp_taskwait (location_t); 1238 extern void c_finish_omp_taskyield (location_t); 1239 extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree, 1240 tree, tree, tree, tree, bool); 1241 extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh); 1242 extern bool c_omp_check_loop_iv_exprs (location_t, enum tree_code, tree, int, 1243 tree, tree, tree, walk_tree_lh); 1244 extern tree c_finish_oacc_wait (location_t, tree, tree); 1245 extern tree c_oacc_split_loop_clauses (tree, tree *, bool); 1246 extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask, 1247 tree, tree *); 1248 extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree); 1249 extern void c_omp_declare_simd_clauses_to_decls (tree, tree); 1250 extern bool c_omp_predefined_variable (tree); 1251 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1252 extern enum omp_clause_defaultmap_kind c_omp_predetermined_mapping (tree); 1253 extern tree c_omp_check_context_selector (location_t, tree); 1254 extern void c_omp_mark_declare_variant (location_t, tree, tree); 1255 extern void c_omp_adjust_map_clauses (tree, bool); 1256 1257 enum c_omp_directive_kind { 1258 C_OMP_DIR_STANDALONE, 1259 C_OMP_DIR_CONSTRUCT, 1260 C_OMP_DIR_DECLARATIVE, 1261 C_OMP_DIR_UTILITY, 1262 C_OMP_DIR_INFORMATIONAL 1263 }; 1264 1265 struct c_omp_directive { 1266 const char *first, *second, *third; 1267 unsigned int id; 1268 enum c_omp_directive_kind kind; 1269 bool simd; 1270 }; 1271 1272 extern const struct c_omp_directive *c_omp_categorize_directive (const char *, 1273 const char *, 1274 const char *); 1275 1276 /* Return next tree in the chain for chain_next walking of tree nodes. */ 1277 static inline tree 1278 c_tree_chain_next (tree t) 1279 { 1280 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different 1281 kind of object, never a long chain of nodes. Prefer 1282 TYPE_NEXT_VARIANT for types. */ 1283 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) 1284 return TYPE_NEXT_VARIANT (t); 1285 /* Otherwise, if there is TREE_CHAIN, return it. */ 1286 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) 1287 return TREE_CHAIN (t); 1288 return NULL; 1289 } 1290 1291 /* Mask used by tm_stmt_attr. */ 1292 #define TM_STMT_ATTR_OUTER 2 1293 #define TM_STMT_ATTR_ATOMIC 4 1294 #define TM_STMT_ATTR_RELAXED 8 1295 1296 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these 1297 are ordered specifically such that more restrictive attributes are 1298 at lower bit positions. This fact is known by the C++ tm attribute 1299 inheritance code such that least bit extraction (mask & -mask) results 1300 in the most restrictive attribute. */ 1301 #define TM_ATTR_SAFE 1 1302 #define TM_ATTR_CALLABLE 2 1303 #define TM_ATTR_PURE 4 1304 #define TM_ATTR_IRREVOCABLE 8 1305 #define TM_ATTR_MAY_CANCEL_OUTER 16 1306 1307 /* A suffix-identifier value doublet that represents user-defined literals 1308 for C++-0x. */ 1309 enum overflow_type { 1310 OT_UNDERFLOW = -1, 1311 OT_NONE, 1312 OT_OVERFLOW 1313 }; 1314 1315 struct GTY(()) tree_userdef_literal { 1316 struct tree_base base; 1317 tree suffix_id; 1318 tree value; 1319 tree num_string; 1320 enum overflow_type overflow; 1321 }; 1322 1323 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \ 1324 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) 1325 1326 #define USERDEF_LITERAL_VALUE(NODE) \ 1327 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) 1328 1329 #define USERDEF_LITERAL_OVERFLOW(NODE) \ 1330 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) 1331 1332 #define USERDEF_LITERAL_NUM_STRING(NODE) \ 1333 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) 1334 1335 #define USERDEF_LITERAL_TYPE(NODE) \ 1336 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) 1337 1338 extern tree build_userdef_literal (tree suffix_id, tree value, 1339 enum overflow_type overflow, 1340 tree num_string); 1341 1342 1343 /* WHILE_STMT accessors. These give access to the condition of the 1344 while statement and the body of the while statement, respectively. */ 1345 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) 1346 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) 1347 1348 /* DO_STMT accessors. These give access to the condition of the do 1349 statement and the body of the do statement, respectively. */ 1350 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) 1351 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) 1352 1353 /* FOR_STMT accessors. These give access to the init statement, 1354 condition, update expression, and body of the for statement, 1355 respectively. */ 1356 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) 1357 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) 1358 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) 1359 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) 1360 #define FOR_SCOPE(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 4) 1361 1362 #define SWITCH_STMT_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) 1363 #define SWITCH_STMT_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) 1364 #define SWITCH_STMT_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) 1365 #define SWITCH_STMT_SCOPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 3) 1366 /* True if there are case labels for all possible values of switch cond, either 1367 because there is a default: case label or because the case label ranges cover 1368 all values. */ 1369 #define SWITCH_STMT_ALL_CASES_P(NODE) \ 1370 TREE_LANG_FLAG_0 (SWITCH_STMT_CHECK (NODE)) 1371 /* True if the body of a switch stmt contains no BREAK_STMTs. */ 1372 #define SWITCH_STMT_NO_BREAK_P(NODE) \ 1373 TREE_LANG_FLAG_2 (SWITCH_STMT_CHECK (NODE)) 1374 1375 1376 /* Nonzero if NODE is the target for genericization of 'break' stmts. */ 1377 #define LABEL_DECL_BREAK(NODE) \ 1378 DECL_LANG_FLAG_0 (LABEL_DECL_CHECK (NODE)) 1379 1380 /* Nonzero if NODE is the target for genericization of 'continue' stmts. */ 1381 #define LABEL_DECL_CONTINUE(NODE) \ 1382 DECL_LANG_FLAG_1 (LABEL_DECL_CHECK (NODE)) 1383 1384 extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree); 1385 1386 /* Possibe cases of scalar_to_vector conversion. */ 1387 enum stv_conv { 1388 stv_error, /* Error occurred. */ 1389 stv_nothing, /* Nothing happened. */ 1390 stv_firstarg, /* First argument must be expanded. */ 1391 stv_secondarg /* Second argument must be expanded. */ 1392 }; 1393 1394 extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, 1395 tree op0, tree op1, bool); 1396 1397 extern tree find_inv_trees (tree *, int *, void *); 1398 extern tree replace_inv_trees (tree *, int *, void *); 1399 1400 extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION); 1401 extern bool valid_array_size_p (location_t, const_tree, tree, bool = true); 1402 extern void invalid_array_size_error (location_t, cst_size_error, 1403 const_tree, const_tree); 1404 1405 /* In c-warn.cc. */ 1406 extern void constant_expression_warning (tree); 1407 extern void constant_expression_error (tree); 1408 extern void overflow_warning (location_t, tree, tree = NULL_TREE); 1409 extern void warn_logical_operator (location_t, enum tree_code, tree, 1410 enum tree_code, tree, enum tree_code, tree); 1411 extern void warn_tautological_cmp (const op_location_t &, enum tree_code, 1412 tree, tree); 1413 extern void warn_logical_not_parentheses (location_t, enum tree_code, tree, 1414 tree); 1415 extern bool warn_if_unused_value (const_tree, location_t, bool = false); 1416 extern bool strict_aliasing_warning (location_t, tree, tree); 1417 extern void sizeof_pointer_memaccess_warning (location_t *, tree, 1418 vec<tree, va_gc> *, tree *, 1419 bool (*) (tree, tree)); 1420 extern void check_main_parameter_types (tree decl); 1421 extern void warnings_for_convert_and_check (location_t, tree, tree, tree); 1422 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool); 1423 extern void warn_for_omitted_condop (location_t, tree); 1424 extern bool warn_for_restrict (unsigned, tree *, unsigned); 1425 extern void warn_for_address_or_pointer_of_packed_member (tree, tree); 1426 extern void warn_parm_array_mismatch (location_t, tree, tree); 1427 extern void maybe_warn_sizeof_array_div (location_t, tree, tree, tree, tree); 1428 extern void do_warn_array_compare (location_t, tree_code, tree, tree); 1429 1430 /* Places where an lvalue, or modifiable lvalue, may be required. 1431 Used to select diagnostic messages in lvalue_error and 1432 readonly_error. */ 1433 enum lvalue_use { 1434 lv_assign, 1435 lv_increment, 1436 lv_decrement, 1437 lv_addressof, 1438 lv_asm 1439 }; 1440 1441 extern void lvalue_error (location_t, enum lvalue_use); 1442 extern void invalid_indirection_error (location_t, tree, ref_operator); 1443 extern void readonly_error (location_t, tree, enum lvalue_use); 1444 extern void warn_array_subscript_with_type_char (location_t, tree); 1445 extern void warn_about_parentheses (location_t, 1446 enum tree_code, 1447 enum tree_code, tree, 1448 enum tree_code, tree); 1449 extern void warn_for_unused_label (tree label); 1450 extern void warn_for_div_by_zero (location_t, tree divisor); 1451 extern void warn_for_memset (location_t, tree, tree, int); 1452 extern void warn_for_sign_compare (location_t, 1453 tree orig_op0, tree orig_op1, 1454 tree op0, tree op1, 1455 tree result_type, 1456 enum tree_code resultcode); 1457 extern void do_warn_double_promotion (tree, tree, tree, const char *, 1458 location_t); 1459 extern void do_warn_unused_parameter (tree); 1460 extern void record_locally_defined_typedef (tree); 1461 extern void maybe_record_typedef_use (tree); 1462 extern void maybe_warn_unused_local_typedefs (void); 1463 extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree); 1464 extern bool maybe_warn_shift_overflow (location_t, tree, tree); 1465 extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **); 1466 extern bool diagnose_mismatched_attributes (tree, tree); 1467 extern tree do_warn_duplicated_branches_r (tree *, int *, void *); 1468 extern void warn_for_multistatement_macros (location_t, location_t, 1469 location_t, enum rid); 1470 1471 /* In c-attribs.cc. */ 1472 extern bool attribute_takes_identifier_p (const_tree); 1473 extern tree handle_deprecated_attribute (tree *, tree, tree, int, bool *); 1474 extern tree handle_unused_attribute (tree *, tree, tree, int, bool *); 1475 extern tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *); 1476 extern int parse_tm_stmt_attr (tree, int); 1477 extern int tm_attr_to_mask (tree); 1478 extern tree tm_mask_to_attr (int); 1479 extern tree find_tm_attribute (tree); 1480 extern const struct attribute_spec::exclusions attr_cold_hot_exclusions[]; 1481 extern const struct attribute_spec::exclusions attr_noreturn_exclusions[]; 1482 extern tree handle_noreturn_attribute (tree *, tree, tree, int, bool *); 1483 extern bool has_attribute (location_t, tree, tree, tree (*)(tree)); 1484 extern tree build_attr_access_from_parms (tree, bool); 1485 1486 /* In c-format.cc. */ 1487 extern bool valid_format_string_type_p (tree); 1488 1489 /* A bitmap of flags to positional_argument. */ 1490 enum posargflags { 1491 /* Consider positional attribute argument value zero valid. */ 1492 POSARG_ZERO = 1, 1493 /* Consider positional attribute argument value valid if it refers 1494 to the ellipsis (i.e., beyond the last typed argument). */ 1495 POSARG_ELLIPSIS = 2 1496 }; 1497 1498 extern tree positional_argument (const_tree, const_tree, tree, tree_code, 1499 int = 0, int = posargflags ()); 1500 1501 extern enum flt_eval_method 1502 excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method); 1503 1504 extern int c_flt_eval_method (bool ts18661_p); 1505 extern void add_no_sanitize_value (tree node, unsigned int flags); 1506 1507 extern void maybe_add_include_fixit (rich_location *, const char *, bool); 1508 extern void maybe_suggest_missing_token_insertion (rich_location *richloc, 1509 enum cpp_ttype token_type, 1510 location_t prev_token_loc); 1511 extern tree braced_lists_to_strings (tree, tree); 1512 1513 #if CHECKING_P 1514 namespace selftest { 1515 /* Declarations for specific families of tests within c-family, 1516 by source file, in alphabetical order. */ 1517 extern void c_diagnostic_cc_tests (void); 1518 extern void c_format_cc_tests (void); 1519 extern void c_indentation_cc_tests (void); 1520 extern void c_opt_problem_cc_tests (void); 1521 extern void c_pretty_print_cc_tests (void); 1522 extern void c_spellcheck_cc_tests (void); 1523 1524 /* The entrypoint for running all of the above tests. */ 1525 extern void c_family_tests (void); 1526 } // namespace selftest 1527 #endif /* #if CHECKING_P */ 1528 1529 #endif /* ! GCC_C_COMMON_H */ 1530
Indexes created Tue Feb 24 01:34:59 UTC 2026