1 /* Definitions for c-common.c. 2 Copyright (C) 1987-2018 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_NONATOMIC, 89 90 /* C (reserved and imaginary types not implemented, so any use is a 91 syntax error) */ 92 RID_IMAGINARY, 93 94 /* C */ 95 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 96 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 97 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 98 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 99 RID_SIZEOF, 100 101 /* C extensions */ 102 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 103 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 104 RID_TYPES_COMPATIBLE_P, RID_BUILTIN_COMPLEX, RID_BUILTIN_SHUFFLE, 105 RID_BUILTIN_TGMATH, 106 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 107 108 /* TS 18661-3 keywords, in the same sequence as the TI_* values. */ 109 RID_FLOAT16, 110 RID_FLOATN_NX_FIRST = RID_FLOAT16, 111 RID_FLOAT32, 112 RID_FLOAT64, 113 RID_FLOAT128, 114 RID_FLOAT32X, 115 RID_FLOAT64X, 116 RID_FLOAT128X, 117 #define CASE_RID_FLOATN_NX \ 118 case RID_FLOAT16: case RID_FLOAT32: case RID_FLOAT64: case RID_FLOAT128: \ 119 case RID_FLOAT32X: case RID_FLOAT64X: case RID_FLOAT128X 120 121 RID_FRACT, RID_ACCUM, RID_AUTO_TYPE, RID_BUILTIN_CALL_WITH_STATIC_CHAIN, 122 123 /* "__GIMPLE", for the GIMPLE-parsing extension to the C frontend. */ 124 RID_GIMPLE, 125 126 /* "__PHI", for parsing PHI function in GIMPLE FE. */ 127 RID_PHI, 128 129 /* "__RTL", for the RTL-parsing extension to the C frontend. */ 130 RID_RTL, 131 132 /* C11 */ 133 RID_ALIGNAS, RID_GENERIC, 134 135 /* This means to warn that this is a C++ keyword, and then treat it 136 as a normal identifier. */ 137 RID_CXX_COMPAT_WARN, 138 139 /* GNU transactional memory extension */ 140 RID_TRANSACTION_ATOMIC, RID_TRANSACTION_RELAXED, RID_TRANSACTION_CANCEL, 141 142 /* Too many ways of getting the name of a function as a string */ 143 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 144 145 /* C++ (some of these are keywords in Objective-C as well, but only 146 if they appear after a '@') */ 147 RID_BOOL, RID_WCHAR, RID_CLASS, 148 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 149 RID_TEMPLATE, RID_NULL, RID_CATCH, 150 RID_DELETE, RID_FALSE, RID_NAMESPACE, 151 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 152 RID_THIS, RID_THROW, RID_TRUE, 153 RID_TRY, RID_TYPENAME, RID_TYPEID, 154 RID_USING, RID_CHAR16, RID_CHAR32, 155 156 /* casts */ 157 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 158 159 /* C++ extensions */ 160 RID_ADDRESSOF, RID_BASES, 161 RID_BUILTIN_LAUNDER, RID_DIRECT_BASES, 162 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 163 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 164 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 165 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_UNIQUE_OBJ_REPRESENTATIONS, 166 RID_HAS_VIRTUAL_DESTRUCTOR, 167 RID_IS_ABSTRACT, RID_IS_AGGREGATE, 168 RID_IS_BASE_OF, RID_IS_CLASS, 169 RID_IS_EMPTY, RID_IS_ENUM, 170 RID_IS_FINAL, RID_IS_LITERAL_TYPE, 171 RID_IS_POD, RID_IS_POLYMORPHIC, 172 RID_IS_SAME_AS, 173 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 174 RID_IS_TRIVIALLY_ASSIGNABLE, RID_IS_TRIVIALLY_CONSTRUCTIBLE, 175 RID_IS_TRIVIALLY_COPYABLE, 176 RID_IS_UNION, RID_UNDERLYING_TYPE, 177 RID_IS_ASSIGNABLE, RID_IS_CONSTRUCTIBLE, 178 179 /* C++11 */ 180 RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT, 181 182 /* C++ concepts */ 183 RID_CONCEPT, RID_REQUIRES, 184 185 /* C++ transactional memory. */ 186 RID_ATOMIC_NOEXCEPT, RID_ATOMIC_CANCEL, RID_SYNCHRONIZED, 187 188 /* Objective-C ("AT" reserved words - they are only keywords when 189 they follow '@') */ 190 RID_AT_ENCODE, RID_AT_END, 191 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 192 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, RID_AT_PACKAGE, 193 RID_AT_PROTOCOL, RID_AT_SELECTOR, 194 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 195 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 196 RID_AT_OPTIONAL, RID_AT_REQUIRED, RID_AT_PROPERTY, 197 RID_AT_SYNTHESIZE, RID_AT_DYNAMIC, 198 RID_AT_INTERFACE, 199 RID_AT_IMPLEMENTATION, 200 201 /* Named address support, mapping the keyword to a particular named address 202 number. Named address space 0 is reserved for the generic address. If 203 there are more than 254 named addresses, the addr_space_t type will need 204 to be grown from an unsigned char to unsigned short. */ 205 RID_ADDR_SPACE_0, /* generic address */ 206 RID_ADDR_SPACE_1, 207 RID_ADDR_SPACE_2, 208 RID_ADDR_SPACE_3, 209 RID_ADDR_SPACE_4, 210 RID_ADDR_SPACE_5, 211 RID_ADDR_SPACE_6, 212 RID_ADDR_SPACE_7, 213 RID_ADDR_SPACE_8, 214 RID_ADDR_SPACE_9, 215 RID_ADDR_SPACE_10, 216 RID_ADDR_SPACE_11, 217 RID_ADDR_SPACE_12, 218 RID_ADDR_SPACE_13, 219 RID_ADDR_SPACE_14, 220 RID_ADDR_SPACE_15, 221 222 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 223 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 224 225 /* __intN keywords. The _N_M here doesn't correspond to the intN 226 in the keyword; use the bitsize in int_n_t_data_t[M] for that. 227 For example, if int_n_t_data_t[0].bitsize is 13, then RID_INT_N_0 228 is for __int13. */ 229 230 /* Note that the range to use is RID_FIRST_INT_N through 231 RID_FIRST_INT_N + NUM_INT_N_ENTS - 1 and c-parser.c has a list of 232 all RID_INT_N_* in a case statement. */ 233 234 RID_INT_N_0, 235 RID_INT_N_1, 236 RID_INT_N_2, 237 RID_INT_N_3, 238 239 RID_FIRST_INT_N = RID_INT_N_0, 240 RID_LAST_INT_N = RID_INT_N_3, 241 242 RID_MAX, 243 244 RID_FIRST_MODIFIER = RID_STATIC, 245 RID_LAST_MODIFIER = RID_ONEWAY, 246 247 RID_FIRST_CXX11 = RID_CONSTEXPR, 248 RID_LAST_CXX11 = RID_STATIC_ASSERT, 249 RID_FIRST_AT = RID_AT_ENCODE, 250 RID_LAST_AT = RID_AT_IMPLEMENTATION, 251 RID_FIRST_PQ = RID_IN, 252 RID_LAST_PQ = RID_ONEWAY, 253 RID_FIRST_PATTR = RID_GETTER, 254 RID_LAST_PATTR = RID_NONATOMIC 255 }; 256 257 #define OBJC_IS_AT_KEYWORD(rid) \ 258 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 259 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 260 261 #define OBJC_IS_PQ_KEYWORD(rid) \ 262 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 263 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 264 265 #define OBJC_IS_PATTR_KEYWORD(rid) \ 266 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PATTR && \ 267 (unsigned int) (rid) <= (unsigned int) RID_LAST_PATTR) 268 269 /* OBJC_IS_CXX_KEYWORD recognizes the 'CXX_OBJC' keywords (such as 270 'class') which are shared in a subtle way between Objective-C and 271 C++. When the lexer is lexing in Objective-C/Objective-C++, if it 272 finds '@' followed by one of these identifiers (eg, '@class'), it 273 recognizes the whole as an Objective-C keyword. If the identifier 274 is found elsewhere, it follows the rules of the C/C++ language. 275 */ 276 #define OBJC_IS_CXX_KEYWORD(rid) \ 277 (rid == RID_CLASS || rid == RID_SYNCHRONIZED \ 278 || rid == RID_PUBLIC || rid == RID_PROTECTED || rid == RID_PRIVATE \ 279 || rid == RID_TRY || rid == RID_THROW || rid == RID_CATCH) 280 281 /* The elements of `ridpointers' are identifier nodes for the reserved 282 type names and storage classes. It is indexed by a RID_... value. */ 283 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 284 285 /* Standard named or nameless data types of the C compiler. */ 286 287 enum c_tree_index 288 { 289 CTI_CHAR16_TYPE, 290 CTI_CHAR32_TYPE, 291 CTI_WCHAR_TYPE, 292 CTI_UNDERLYING_WCHAR_TYPE, 293 CTI_WINT_TYPE, 294 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 295 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 296 CTI_INTMAX_TYPE, 297 CTI_UINTMAX_TYPE, 298 CTI_WIDEST_INT_LIT_TYPE, 299 CTI_WIDEST_UINT_LIT_TYPE, 300 301 /* Types for <stdint.h>, that may not be defined on all 302 targets. */ 303 CTI_SIG_ATOMIC_TYPE, 304 CTI_INT8_TYPE, 305 CTI_INT16_TYPE, 306 CTI_INT32_TYPE, 307 CTI_INT64_TYPE, 308 CTI_UINT8_TYPE, 309 CTI_UINT16_TYPE, 310 CTI_UINT32_TYPE, 311 CTI_UINT64_TYPE, 312 CTI_INT_LEAST8_TYPE, 313 CTI_INT_LEAST16_TYPE, 314 CTI_INT_LEAST32_TYPE, 315 CTI_INT_LEAST64_TYPE, 316 CTI_UINT_LEAST8_TYPE, 317 CTI_UINT_LEAST16_TYPE, 318 CTI_UINT_LEAST32_TYPE, 319 CTI_UINT_LEAST64_TYPE, 320 CTI_INT_FAST8_TYPE, 321 CTI_INT_FAST16_TYPE, 322 CTI_INT_FAST32_TYPE, 323 CTI_INT_FAST64_TYPE, 324 CTI_UINT_FAST8_TYPE, 325 CTI_UINT_FAST16_TYPE, 326 CTI_UINT_FAST32_TYPE, 327 CTI_UINT_FAST64_TYPE, 328 CTI_INTPTR_TYPE, 329 CTI_UINTPTR_TYPE, 330 331 CTI_CHAR_ARRAY_TYPE, 332 CTI_CHAR16_ARRAY_TYPE, 333 CTI_CHAR32_ARRAY_TYPE, 334 CTI_WCHAR_ARRAY_TYPE, 335 CTI_STRING_TYPE, 336 CTI_CONST_STRING_TYPE, 337 338 /* Type for boolean expressions (bool in C++, int in C). */ 339 CTI_TRUTHVALUE_TYPE, 340 CTI_TRUTHVALUE_TRUE, 341 CTI_TRUTHVALUE_FALSE, 342 343 CTI_DEFAULT_FUNCTION_TYPE, 344 345 /* These are not types, but we have to look them up all the time. */ 346 CTI_FUNCTION_NAME_DECL, 347 CTI_PRETTY_FUNCTION_NAME_DECL, 348 CTI_C99_FUNCTION_NAME_DECL, 349 CTI_SAVED_FUNCTION_NAME_DECLS, 350 351 CTI_NULL, 352 353 CTI_MAX 354 }; 355 356 #define C_CPP_HASHNODE(id) \ 357 (&(((struct c_common_identifier *) (id))->node)) 358 #define C_RID_CODE(id) \ 359 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 360 #define C_SET_RID_CODE(id, code) \ 361 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 362 363 /* Identifier part common to the C front ends. Inherits from 364 tree_identifier, despite appearances. */ 365 struct GTY(()) c_common_identifier { 366 struct tree_common common; 367 struct cpp_hashnode node; 368 }; 369 370 /* An entry in the reserved keyword table. */ 371 372 struct c_common_resword 373 { 374 const char *const word; 375 ENUM_BITFIELD(rid) const rid : 16; 376 const unsigned int disable : 16; 377 }; 378 379 /* Mode used to build pointers (VOIDmode means ptr_mode). */ 380 381 extern machine_mode c_default_pointer_mode; 382 383 /* Extra cpp_ttype values for C++. */ 384 385 /* A token type for template-ids. If a template-id is processed while 386 parsing tentatively, it is replaced with a CPP_TEMPLATE_ID token; 387 the value of the CPP_TEMPLATE_ID is whatever was returned by 388 cp_parser_template_id. */ 389 #define CPP_TEMPLATE_ID ((enum cpp_ttype) (CPP_KEYWORD + 1)) 390 391 /* A token type for nested-name-specifiers. If a 392 nested-name-specifier is processed while parsing tentatively, it is 393 replaced with a CPP_NESTED_NAME_SPECIFIER token; the value of the 394 CPP_NESTED_NAME_SPECIFIER is whatever was returned by 395 cp_parser_nested_name_specifier_opt. */ 396 #define CPP_NESTED_NAME_SPECIFIER ((enum cpp_ttype) (CPP_TEMPLATE_ID + 1)) 397 398 /* A token type for pre-parsed C++0x decltype. */ 399 #define CPP_DECLTYPE ((enum cpp_ttype) (CPP_NESTED_NAME_SPECIFIER + 1)) 400 401 /* A token type for pre-parsed primary-expression (lambda- or statement-). */ 402 #define CPP_PREPARSED_EXPR ((enum cpp_ttype) (CPP_DECLTYPE + 1)) 403 404 /* The number of token types, including C++-specific ones. */ 405 #define N_CP_TTYPES ((int) (CPP_PREPARSED_EXPR + 1)) 406 407 /* Disable mask. Keywords are disabled if (reswords[i].disable & 408 mask) is _true_. Thus for keywords which are present in all 409 languages the disable field is zero. */ 410 411 #define D_CONLY 0x001 /* C only (not in C++). */ 412 #define D_CXXONLY 0x002 /* C++ only (not in C). */ 413 #define D_C99 0x004 /* In C, C99 only. */ 414 #define D_CXX11 0x008 /* In C++, C++11 only. */ 415 #define D_EXT 0x010 /* GCC extension. */ 416 #define D_EXT89 0x020 /* GCC extension incorporated in C99. */ 417 #define D_ASM 0x040 /* Disabled by -fno-asm. */ 418 #define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ 419 #define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ 420 #define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ 421 #define D_CXX_CONCEPTS 0x400 /* In C++, only with concepts. */ 422 #define D_TRANSMEM 0X800 /* C++ transactional memory TS. */ 423 424 #define D_CXX_CONCEPTS_FLAGS D_CXXONLY | D_CXX_CONCEPTS 425 426 /* The reserved keyword table. */ 427 extern const struct c_common_resword c_common_reswords[]; 428 429 /* The number of items in the reserved keyword table. */ 430 extern const unsigned int num_c_common_reswords; 431 432 #define char16_type_node c_global_trees[CTI_CHAR16_TYPE] 433 #define char32_type_node c_global_trees[CTI_CHAR32_TYPE] 434 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 435 #define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] 436 #define wint_type_node c_global_trees[CTI_WINT_TYPE] 437 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 438 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 439 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 440 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 441 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 442 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 443 444 #define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] 445 #define int8_type_node c_global_trees[CTI_INT8_TYPE] 446 #define int16_type_node c_global_trees[CTI_INT16_TYPE] 447 #define int32_type_node c_global_trees[CTI_INT32_TYPE] 448 #define int64_type_node c_global_trees[CTI_INT64_TYPE] 449 #define uint8_type_node c_global_trees[CTI_UINT8_TYPE] 450 #define c_uint16_type_node c_global_trees[CTI_UINT16_TYPE] 451 #define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] 452 #define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] 453 #define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] 454 #define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] 455 #define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] 456 #define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] 457 #define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] 458 #define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] 459 #define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] 460 #define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] 461 #define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] 462 #define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] 463 #define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] 464 #define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] 465 #define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] 466 #define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] 467 #define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] 468 #define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] 469 #define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] 470 #define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] 471 472 #define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] 473 #define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] 474 #define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] 475 476 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 477 #define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] 478 #define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] 479 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 480 #define string_type_node c_global_trees[CTI_STRING_TYPE] 481 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 482 483 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 484 485 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 486 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 487 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 488 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 489 490 /* The node for C++ `__null'. */ 491 #define null_node c_global_trees[CTI_NULL] 492 493 extern GTY(()) tree c_global_trees[CTI_MAX]; 494 495 /* Mark which labels are explicitly declared. 496 These may be shadowed, and may be referenced from nested functions. */ 497 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 498 499 enum c_language_kind 500 { 501 clk_c = 0, /* C90, C94, C99 or C11 */ 502 clk_objc = 1, /* clk_c with ObjC features. */ 503 clk_cxx = 2, /* ANSI/ISO C++ */ 504 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 505 }; 506 507 /* To test for a specific language use c_language, defined by each 508 front end. For "ObjC features" or "not C++" use the macros. */ 509 extern c_language_kind c_language; 510 511 #define c_dialect_cxx() ((c_language & clk_cxx) != 0) 512 #define c_dialect_objc() ((c_language & clk_objc) != 0) 513 514 /* The various name of operator that appears in error messages. */ 515 enum ref_operator { 516 /* NULL */ 517 RO_NULL, 518 /* array indexing */ 519 RO_ARRAY_INDEXING, 520 /* unary * */ 521 RO_UNARY_STAR, 522 /* -> */ 523 RO_ARROW, 524 /* implicit conversion */ 525 RO_IMPLICIT_CONVERSION, 526 /* ->* */ 527 RO_ARROW_STAR 528 }; 529 530 /* Information about a statement tree. */ 531 532 struct GTY(()) stmt_tree_s { 533 /* A stack of statement lists being collected. */ 534 vec<tree, va_gc> *x_cur_stmt_list; 535 536 /* In C++, Nonzero if we should treat statements as full 537 expressions. In particular, this variable is non-zero if at the 538 end of a statement we should destroy any temporaries created 539 during that statement. Similarly, if, at the end of a block, we 540 should destroy any local variables in this block. Normally, this 541 variable is nonzero, since those are the normal semantics of 542 C++. 543 544 This flag has no effect in C. */ 545 int stmts_are_full_exprs_p; 546 }; 547 548 typedef struct stmt_tree_s *stmt_tree; 549 550 /* Global state pertinent to the current function. Some C dialects 551 extend this structure with additional fields. */ 552 553 struct GTY(()) c_language_function { 554 /* While we are parsing the function, this contains information 555 about the statement-tree that we are building. */ 556 struct stmt_tree_s x_stmt_tree; 557 558 /* Vector of locally defined typedefs, for 559 -Wunused-local-typedefs. */ 560 vec<tree, va_gc> *local_typedefs; 561 }; 562 563 #define stmt_list_stack (current_stmt_tree ()->x_cur_stmt_list) 564 565 /* When building a statement-tree, this is the current statement list 566 being collected. */ 567 #define cur_stmt_list (stmt_list_stack->last ()) 568 569 #define building_stmt_list_p() (stmt_list_stack && !stmt_list_stack->is_empty()) 570 571 /* Language-specific hooks. */ 572 573 /* If non-NULL, this function is called after a precompile header file 574 is loaded. */ 575 extern void (*lang_post_pch_load) (void); 576 577 extern void push_file_scope (void); 578 extern void pop_file_scope (void); 579 extern stmt_tree current_stmt_tree (void); 580 extern tree push_stmt_list (void); 581 extern tree pop_stmt_list (tree); 582 extern tree add_stmt (tree); 583 extern void push_cleanup (tree, tree, bool); 584 585 extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 586 location_t, tree, tree); 587 extern tree build_indirect_ref (location_t, tree, ref_operator); 588 589 extern bool has_c_linkage (const_tree decl); 590 extern bool c_decl_implicit (const_tree); 591 592 /* Switches common to the C front ends. */ 593 594 /* Nonzero means don't output line number information. */ 595 596 extern char flag_no_line_commands; 597 598 /* Nonzero causes -E output not to be done, but directives such as 599 #define that have side effects are still obeyed. */ 600 601 extern char flag_no_output; 602 603 /* Nonzero means dump macros in some fashion; contains the 'D', 'M', 604 'N' or 'U' of the command line switch. */ 605 606 extern char flag_dump_macros; 607 608 /* Nonzero means pass #include lines through to the output. */ 609 610 extern char flag_dump_includes; 611 612 /* Nonzero means process PCH files while preprocessing. */ 613 614 extern bool flag_pch_preprocess; 615 616 /* The file name to which we should write a precompiled header, or 617 NULL if no header will be written in this compile. */ 618 619 extern const char *pch_file; 620 621 /* Nonzero if an ISO standard was selected. It rejects macros in the 622 user's namespace. */ 623 624 extern int flag_iso; 625 626 /* C/ObjC language option variables. */ 627 628 629 /* Nonzero means allow type mismatches in conditional expressions; 630 just make their values `void'. */ 631 632 extern int flag_cond_mismatch; 633 634 /* Nonzero means enable C89 Amendment 1 features. */ 635 636 extern int flag_isoc94; 637 638 /* Nonzero means use the ISO C99 (or C11) dialect of C. */ 639 640 extern int flag_isoc99; 641 642 /* Nonzero means use the ISO C11 dialect of C. */ 643 644 extern int flag_isoc11; 645 646 /* Nonzero means that we have builtin functions, and main is an int. */ 647 648 extern int flag_hosted; 649 650 /* ObjC language option variables. */ 651 652 653 /* Tells the compiler that this is a special run. Do not perform any 654 compiling, instead we are to test some platform dependent features 655 and output a C header file with appropriate definitions. */ 656 657 extern int print_struct_values; 658 659 /* Tells the compiler what is the constant string class for ObjC. */ 660 661 extern const char *constant_string_class_name; 662 663 664 /* C++ language option variables. */ 665 666 /* The reference version of the ABI for -Wabi. */ 667 668 extern int warn_abi_version; 669 670 /* Return TRUE if one of {flag_abi_version,flag_abi_compat_version} is 671 less than N and the other is at least N. */ 672 #define abi_compat_version_crosses(N) \ 673 (abi_version_at_least(N) \ 674 != (flag_abi_compat_version == 0 \ 675 || flag_abi_compat_version >= (N))) 676 677 /* Return TRUE if one of {flag_abi_version,warn_abi_version} is 678 less than N and the other is at least N, for use by -Wabi. */ 679 #define abi_version_crosses(N) \ 680 (abi_version_at_least(N) \ 681 != (warn_abi_version == 0 \ 682 || warn_abi_version >= (N))) 683 684 /* Nonzero means generate separate instantiation control files and 685 juggle them at link time. */ 686 687 extern int flag_use_repository; 688 689 /* The supported C++ dialects. */ 690 691 enum cxx_dialect { 692 cxx_unset, 693 /* C++98 with TC1 */ 694 cxx98, 695 cxx03 = cxx98, 696 /* C++11 */ 697 cxx0x, 698 cxx11 = cxx0x, 699 /* C++14 */ 700 cxx14, 701 /* C++17 */ 702 cxx17, 703 /* C++2a (C++20?) */ 704 cxx2a 705 }; 706 707 /* The C++ dialect being used. C++98 is the default. */ 708 extern enum cxx_dialect cxx_dialect; 709 710 /* Maximum template instantiation depth. This limit is rather 711 arbitrary, but it exists to limit the time it takes to notice 712 excessively recursive template instantiations. */ 713 714 extern int max_tinst_depth; 715 716 /* Nonzero means that we should not issue warnings about problems that 717 occur when the code is executed, because the code being processed 718 is not expected to be executed. This is set during parsing. This 719 is used for cases like sizeof() and "0 ? a : b". This is a count, 720 not a bool, because unexecuted expressions can nest. */ 721 722 extern int c_inhibit_evaluation_warnings; 723 724 /* Whether lexing has been completed, so subsequent preprocessor 725 errors should use the compiler's input_location. */ 726 727 extern bool done_lexing; 728 729 /* C types are partitioned into three subsets: object, function, and 730 incomplete types. */ 731 #define C_TYPE_OBJECT_P(type) \ 732 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 733 734 #define C_TYPE_INCOMPLETE_P(type) \ 735 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 736 737 #define C_TYPE_FUNCTION_P(type) \ 738 (TREE_CODE (type) == FUNCTION_TYPE) 739 740 /* For convenience we define a single macro to identify the class of 741 object or incomplete types. */ 742 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 743 (!C_TYPE_FUNCTION_P (type)) 744 745 struct visibility_flags 746 { 747 unsigned inpragma : 1; /* True when in #pragma GCC visibility. */ 748 unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */ 749 }; 750 751 /* These enumerators are possible types of unsafe conversions. */ 752 enum conversion_safety { 753 /* The conversion is safe. */ 754 SAFE_CONVERSION = 0, 755 /* Another type of conversion with problems. */ 756 UNSAFE_OTHER, 757 /* Conversion between signed and unsigned integers 758 which are all warned about immediately, so this is unused. */ 759 UNSAFE_SIGN, 760 /* Conversions that reduce the precision of reals including conversions 761 from reals to integers. */ 762 UNSAFE_REAL, 763 /* Conversions from complex to reals or integers, that discard imaginary 764 component. */ 765 UNSAFE_IMAGINARY 766 }; 767 768 /* Global visibility options. */ 769 extern struct visibility_flags visibility_options; 770 771 /* Attribute table common to the C front ends. */ 772 extern const struct attribute_spec c_common_attribute_table[]; 773 extern const struct attribute_spec c_common_format_attribute_table[]; 774 775 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 776 ID is the identifier to use, NAME is the string. 777 TYPE_DEP indicates whether it depends on type of the function or not 778 (i.e. __PRETTY_FUNCTION__). */ 779 780 extern tree (*make_fname_decl) (location_t, tree, int); 781 782 /* In c-decl.c and cp/tree.c. FIXME. */ 783 extern void c_register_addr_space (const char *str, addr_space_t as); 784 785 /* In c-common.c. */ 786 extern bool in_late_binary_op; 787 extern const char *c_addr_space_name (addr_space_t as); 788 extern tree identifier_global_value (tree); 789 extern tree c_linkage_bindings (tree); 790 extern void record_builtin_type (enum rid, const char *, tree); 791 extern tree build_void_list_node (void); 792 extern void start_fname_decls (void); 793 extern void finish_fname_decls (void); 794 extern const char *fname_as_string (int); 795 extern tree fname_decl (location_t, unsigned, tree); 796 797 extern int check_user_alignment (const_tree, bool); 798 extern bool check_function_arguments (location_t loc, const_tree, const_tree, 799 int, tree *, vec<location_t> *); 800 extern void check_function_arguments_recurse (void (*) 801 (void *, tree, 802 unsigned HOST_WIDE_INT), 803 void *, tree, 804 unsigned HOST_WIDE_INT); 805 extern bool check_builtin_function_arguments (location_t, vec<location_t>, 806 tree, int, tree *); 807 extern void check_function_format (tree, int, tree *, vec<location_t> *); 808 extern bool attribute_fallthrough_p (tree); 809 extern tree handle_format_attribute (tree *, tree, tree, int, bool *); 810 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 811 extern bool c_common_handle_option (size_t, const char *, int, int, location_t, 812 const struct cl_option_handlers *); 813 extern bool default_handle_c_option (size_t, const char *, int); 814 extern tree c_common_type_for_mode (machine_mode, int); 815 extern tree c_common_type_for_size (unsigned int, int); 816 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, 817 int, int); 818 extern tree c_common_unsigned_type (tree); 819 extern tree c_common_signed_type (tree); 820 extern tree c_common_signed_or_unsigned_type (int, tree); 821 extern void c_common_init_ts (void); 822 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); 823 extern enum conversion_safety unsafe_conversion_p (location_t, tree, tree, tree, 824 bool); 825 extern bool decl_with_nonnull_addr_p (const_tree); 826 extern tree c_fully_fold (tree, bool, bool *, bool = false); 827 extern tree c_wrap_maybe_const (tree, bool); 828 extern tree c_common_truthvalue_conversion (location_t, tree); 829 extern void c_apply_type_quals_to_decl (int, tree); 830 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, bool, int); 831 extern tree c_alignof_expr (location_t, tree); 832 /* Print an error message for invalid operands to arith operation CODE. 833 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 834 extern void binary_op_error (rich_location *, enum tree_code, tree, tree); 835 extern tree fix_string_type (tree); 836 extern tree convert_and_check (location_t, tree, tree); 837 extern bool c_determine_visibility (tree); 838 extern bool vector_types_compatible_elements_p (tree, tree); 839 extern void mark_valid_location_for_stdc_pragma (bool); 840 extern bool valid_location_for_stdc_pragma_p (void); 841 extern void set_float_const_decimal64 (void); 842 extern void clear_float_const_decimal64 (void); 843 extern bool float_const_decimal64_p (void); 844 845 extern bool keyword_begins_type_specifier (enum rid); 846 extern bool keyword_is_storage_class_specifier (enum rid); 847 extern bool keyword_is_type_qualifier (enum rid); 848 extern bool keyword_is_decl_specifier (enum rid); 849 extern unsigned max_align_t_align (void); 850 extern bool cxx_fundamental_alignment_p (unsigned); 851 extern bool pointer_to_zero_sized_aggr_p (tree); 852 extern bool bool_promoted_to_int_p (tree); 853 extern tree fold_for_warn (tree); 854 extern tree c_common_get_narrower (tree, int *); 855 extern bool get_nonnull_operand (tree, unsigned HOST_WIDE_INT *); 856 857 #define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, false, 1) 858 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, false, 1) 859 860 /* Subroutine of build_binary_op, used for certain operations. */ 861 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 862 863 /* Subroutine of build_binary_op, used for comparison operations. 864 See if the operands have both been converted from subword integer types 865 and, if so, perhaps change them both back to their original type. */ 866 extern tree shorten_compare (location_t, tree *, tree *, tree *, 867 enum tree_code *); 868 869 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree, 870 bool = true); 871 872 /* Add qualifiers to a type, in the fashion for C. */ 873 extern tree c_build_qualified_type (tree, int, tree = NULL_TREE, size_t = 0); 874 875 /* Build tree nodes and builtin functions common to both C and C++ language 876 frontends. */ 877 extern void c_common_nodes_and_builtins (void); 878 879 extern void disable_builtin_function (const char *); 880 881 extern void set_compound_literal_name (tree decl); 882 883 extern tree build_va_arg (location_t, tree, tree); 884 885 extern const unsigned int c_family_lang_mask; 886 extern unsigned int c_common_option_lang_mask (void); 887 extern void c_common_diagnostics_set_defaults (diagnostic_context *); 888 extern bool c_common_complain_wrong_lang_p (const struct cl_option *); 889 extern void c_common_init_options_struct (struct gcc_options *); 890 extern void c_common_init_options (unsigned int, struct cl_decoded_option *); 891 extern bool c_common_post_options (const char **); 892 extern bool c_common_init (void); 893 extern void c_common_finish (void); 894 extern void c_common_parse_file (void); 895 extern FILE *get_dump_info (int, dump_flags_t *); 896 extern alias_set_type c_common_get_alias_set (tree); 897 extern void c_register_builtin_type (tree, const char*); 898 extern bool c_promoting_integer_type_p (const_tree); 899 extern bool self_promoting_args_p (const_tree); 900 extern tree strip_pointer_operator (tree); 901 extern tree strip_pointer_or_array_types (tree); 902 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 903 904 /* This is the basic parsing function. */ 905 extern void c_parse_file (void); 906 907 extern void c_parse_final_cleanups (void); 908 909 /* These macros provide convenient access to the various _STMT nodes. */ 910 911 /* Nonzero if a given STATEMENT_LIST represents the outermost binding 912 if a statement expression. */ 913 #define STATEMENT_LIST_STMT_EXPR(NODE) \ 914 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 915 916 /* Nonzero if a label has been added to the statement list. */ 917 #define STATEMENT_LIST_HAS_LABEL(NODE) \ 918 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 919 920 /* C_MAYBE_CONST_EXPR accessors. */ 921 #define C_MAYBE_CONST_EXPR_PRE(NODE) \ 922 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 923 #define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 924 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 925 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 926 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 927 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 928 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 929 #define EXPR_INT_CONST_OPERANDS(EXPR) \ 930 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 931 && (TREE_CODE (EXPR) == INTEGER_CST \ 932 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 933 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 934 935 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 936 #define DECL_C_BIT_FIELD(NODE) \ 937 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 938 #define SET_DECL_C_BIT_FIELD(NODE) \ 939 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 940 #define CLEAR_DECL_C_BIT_FIELD(NODE) \ 941 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 942 943 /* True if the decl was an unnamed bitfield. */ 944 #define DECL_UNNAMED_BIT_FIELD(NODE) \ 945 (DECL_C_BIT_FIELD (NODE) && !DECL_NAME (NODE)) 946 947 extern tree do_case (location_t, tree, tree); 948 extern tree build_stmt (location_t, enum tree_code, ...); 949 extern tree build_real_imag_expr (location_t, enum tree_code, tree); 950 951 /* These functions must be defined by each front-end which implements 952 a variant of the C language. They are used in c-common.c. */ 953 954 extern tree build_unary_op (location_t, enum tree_code, tree, bool); 955 extern tree build_binary_op (location_t, enum tree_code, tree, tree, bool); 956 extern tree perform_integral_promotions (tree); 957 958 /* These functions must be defined by each front-end which implements 959 a variant of the C language. They are used by port files. */ 960 961 extern tree default_conversion (tree); 962 963 /* Given two integer or real types, return the type for their sum. 964 Given two compatible ANSI C types, returns the merged type. */ 965 966 extern tree common_type (tree, tree); 967 968 extern tree decl_constant_value (tree); 969 970 /* Handle increment and decrement of boolean types. */ 971 extern tree boolean_increment (enum tree_code, tree); 972 973 extern int case_compare (splay_tree_key, splay_tree_key); 974 975 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree, 976 bool *); 977 extern bool c_switch_covers_all_cases_p (splay_tree, tree); 978 979 extern tree build_function_call (location_t, tree, tree); 980 981 extern tree build_function_call_vec (location_t, vec<location_t>, tree, 982 vec<tree, va_gc> *, vec<tree, va_gc> *); 983 984 extern tree resolve_overloaded_builtin (location_t, tree, vec<tree, va_gc> *); 985 986 extern tree finish_label_address_expr (tree, location_t); 987 988 /* Same function prototype, but the C and C++ front ends have 989 different implementations. Used in c-common.c. */ 990 extern tree lookup_label (tree); 991 extern tree lookup_name (tree); 992 extern bool lvalue_p (const_tree); 993 994 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 995 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 996 extern tree c_build_vec_perm_expr (location_t, tree, tree, tree, bool = true); 997 998 extern void init_c_lex (void); 999 1000 extern void c_cpp_builtins (cpp_reader *); 1001 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 1002 extern bool c_cpp_error (cpp_reader *, int, int, rich_location *, 1003 const char *, va_list *) 1004 ATTRIBUTE_GCC_DIAG(5,0); 1005 extern int c_common_has_attribute (cpp_reader *); 1006 1007 extern bool parse_optimize_options (tree, bool); 1008 1009 /* Positive if an implicit `extern "C"' scope has just been entered; 1010 negative if such a scope has just been exited. */ 1011 extern GTY(()) int pending_lang_change; 1012 1013 /* Information recorded about each file examined during compilation. */ 1014 1015 struct c_fileinfo 1016 { 1017 int time; /* Time spent in the file. */ 1018 1019 /* Flags used only by C++. 1020 INTERFACE_ONLY nonzero means that we are in an "interface" section 1021 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 1022 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 1023 INTERFACE_ONLY is zero, it means that we are responsible for 1024 exporting definitions that others might need. */ 1025 short interface_only; 1026 short interface_unknown; 1027 }; 1028 1029 struct c_fileinfo *get_fileinfo (const char *); 1030 extern void dump_time_statistics (void); 1031 1032 extern bool c_dump_tree (void *, tree); 1033 1034 extern void verify_sequence_points (tree); 1035 1036 extern tree fold_offsetof (tree, tree = size_type_node, 1037 tree_code ctx = ERROR_MARK); 1038 1039 extern int complete_array_type (tree *, tree, bool); 1040 1041 extern tree builtin_type_for_size (int, bool); 1042 1043 extern void c_common_mark_addressable_vec (tree); 1044 1045 extern void set_underlying_type (tree); 1046 extern void record_types_used_by_current_var_decl (tree); 1047 extern vec<tree, va_gc> *make_tree_vector (void); 1048 extern void release_tree_vector (vec<tree, va_gc> *); 1049 extern vec<tree, va_gc> *make_tree_vector_single (tree); 1050 extern vec<tree, va_gc> *make_tree_vector_from_list (tree); 1051 extern vec<tree, va_gc> *make_tree_vector_from_ctor (tree); 1052 extern vec<tree, va_gc> *make_tree_vector_copy (const vec<tree, va_gc> *); 1053 1054 /* Used for communication between c_common_type_for_mode and 1055 c_register_builtin_type. */ 1056 extern GTY(()) tree registered_builtin_types; 1057 1058 /* Read SOURCE_DATE_EPOCH from environment to have a deterministic 1059 timestamp to replace embedded current dates to get reproducible 1060 results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */ 1061 extern time_t cb_get_source_date_epoch (cpp_reader *pfile); 1062 1063 /* The value (as a unix timestamp) corresponds to date 1064 "Dec 31 9999 23:59:59 UTC", which is the latest date that __DATE__ and 1065 __TIME__ can store. */ 1066 #define MAX_SOURCE_DATE_EPOCH HOST_WIDE_INT_C (253402300799) 1067 1068 /* Callback for libcpp for offering spelling suggestions for misspelled 1069 directives. */ 1070 extern const char *cb_get_suggestion (cpp_reader *, const char *, 1071 const char *const *); 1072 1073 extern GTY(()) string_concat_db *g_string_concat_db; 1074 1075 class substring_loc; 1076 extern const char *c_get_substring_location (const substring_loc &substr_loc, 1077 location_t *out_loc); 1078 1079 /* In c-gimplify.c */ 1080 extern void c_genericize (tree); 1081 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1082 extern tree c_build_bind_expr (location_t, tree, tree); 1083 1084 /* In c-lex.c. */ 1085 extern enum cpp_ttype 1086 conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind); 1087 1088 /* In c-pch.c */ 1089 extern void pch_init (void); 1090 extern void pch_cpp_save_state (void); 1091 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1092 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1093 const char *orig); 1094 extern void c_common_write_pch (void); 1095 extern void c_common_no_more_pch (void); 1096 extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1097 1098 /* In *-checksum.c */ 1099 extern const unsigned char executable_checksum[16]; 1100 1101 /* In c-cppbuiltin.c */ 1102 extern void builtin_define_std (const char *macro); 1103 extern void builtin_define_with_value (const char *, const char *, int); 1104 extern void builtin_define_with_int_value (const char *, HOST_WIDE_INT); 1105 extern void builtin_define_type_sizeof (const char *, tree); 1106 extern void c_stddef_cpp_builtins (void); 1107 extern void fe_file_change (const line_map_ordinary *); 1108 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char, 1109 rich_location *richloc); 1110 1111 /* In c-ppoutput.c */ 1112 extern void init_pp_output (FILE *); 1113 extern void preprocess_file (cpp_reader *); 1114 extern void pp_file_change (const line_map_ordinary *); 1115 extern void pp_dir_change (cpp_reader *, const char *); 1116 extern bool check_missing_format_attribute (tree, tree); 1117 1118 /* In c-omp.c */ 1119 typedef wide_int_bitmask omp_clause_mask; 1120 1121 #define OMP_CLAUSE_MASK_1 omp_clause_mask (1) 1122 1123 enum c_omp_clause_split 1124 { 1125 C_OMP_CLAUSE_SPLIT_TARGET = 0, 1126 C_OMP_CLAUSE_SPLIT_TEAMS, 1127 C_OMP_CLAUSE_SPLIT_DISTRIBUTE, 1128 C_OMP_CLAUSE_SPLIT_PARALLEL, 1129 C_OMP_CLAUSE_SPLIT_FOR, 1130 C_OMP_CLAUSE_SPLIT_SIMD, 1131 C_OMP_CLAUSE_SPLIT_COUNT, 1132 C_OMP_CLAUSE_SPLIT_SECTIONS = C_OMP_CLAUSE_SPLIT_FOR, 1133 C_OMP_CLAUSE_SPLIT_TASKLOOP = C_OMP_CLAUSE_SPLIT_FOR 1134 }; 1135 1136 enum c_omp_region_type 1137 { 1138 C_ORT_OMP = 1 << 0, 1139 C_ORT_ACC = 1 << 1, 1140 C_ORT_DECLARE_SIMD = 1 << 2, 1141 C_ORT_OMP_DECLARE_SIMD = C_ORT_OMP | C_ORT_DECLARE_SIMD 1142 }; 1143 1144 extern tree c_finish_omp_master (location_t, tree); 1145 extern tree c_finish_omp_taskgroup (location_t, tree); 1146 extern tree c_finish_omp_critical (location_t, tree, tree, tree); 1147 extern tree c_finish_omp_ordered (location_t, tree, tree); 1148 extern void c_finish_omp_barrier (location_t); 1149 extern tree c_finish_omp_atomic (location_t, enum tree_code, enum tree_code, 1150 tree, tree, tree, tree, tree, bool, bool, 1151 bool = false); 1152 extern void c_finish_omp_flush (location_t); 1153 extern void c_finish_omp_taskwait (location_t); 1154 extern void c_finish_omp_taskyield (location_t); 1155 extern tree c_finish_omp_for (location_t, enum tree_code, tree, tree, tree, 1156 tree, tree, tree, tree); 1157 extern bool c_omp_check_loop_iv (tree, tree, walk_tree_lh); 1158 extern bool c_omp_check_loop_iv_exprs (location_t, tree, tree, tree, tree, 1159 walk_tree_lh); 1160 extern tree c_finish_oacc_wait (location_t, tree, tree); 1161 extern tree c_oacc_split_loop_clauses (tree, tree *, bool); 1162 extern void c_omp_split_clauses (location_t, enum tree_code, omp_clause_mask, 1163 tree, tree *); 1164 extern tree c_omp_declare_simd_clauses_to_numbers (tree, tree); 1165 extern void c_omp_declare_simd_clauses_to_decls (tree, tree); 1166 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1167 1168 /* Return next tree in the chain for chain_next walking of tree nodes. */ 1169 static inline tree 1170 c_tree_chain_next (tree t) 1171 { 1172 /* TREE_CHAIN of a type is TYPE_STUB_DECL, which is different 1173 kind of object, never a long chain of nodes. Prefer 1174 TYPE_NEXT_VARIANT for types. */ 1175 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_TYPE_COMMON)) 1176 return TYPE_NEXT_VARIANT (t); 1177 /* Otherwise, if there is TREE_CHAIN, return it. */ 1178 if (CODE_CONTAINS_STRUCT (TREE_CODE (t), TS_COMMON)) 1179 return TREE_CHAIN (t); 1180 return NULL; 1181 } 1182 1183 /* Mask used by tm_stmt_attr. */ 1184 #define TM_STMT_ATTR_OUTER 2 1185 #define TM_STMT_ATTR_ATOMIC 4 1186 #define TM_STMT_ATTR_RELAXED 8 1187 1188 /* Mask used by tm_attr_to_mask and tm_mask_to_attr. Note that these 1189 are ordered specifically such that more restrictive attributes are 1190 at lower bit positions. This fact is known by the C++ tm attribute 1191 inheritance code such that least bit extraction (mask & -mask) results 1192 in the most restrictive attribute. */ 1193 #define TM_ATTR_SAFE 1 1194 #define TM_ATTR_CALLABLE 2 1195 #define TM_ATTR_PURE 4 1196 #define TM_ATTR_IRREVOCABLE 8 1197 #define TM_ATTR_MAY_CANCEL_OUTER 16 1198 1199 /* A suffix-identifier value doublet that represents user-defined literals 1200 for C++-0x. */ 1201 enum overflow_type { 1202 OT_UNDERFLOW = -1, 1203 OT_NONE, 1204 OT_OVERFLOW 1205 }; 1206 1207 struct GTY(()) tree_userdef_literal { 1208 struct tree_base base; 1209 tree suffix_id; 1210 tree value; 1211 tree num_string; 1212 enum overflow_type overflow; 1213 }; 1214 1215 #define USERDEF_LITERAL_SUFFIX_ID(NODE) \ 1216 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->suffix_id) 1217 1218 #define USERDEF_LITERAL_VALUE(NODE) \ 1219 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->value) 1220 1221 #define USERDEF_LITERAL_OVERFLOW(NODE) \ 1222 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->overflow) 1223 1224 #define USERDEF_LITERAL_NUM_STRING(NODE) \ 1225 (((struct tree_userdef_literal *)USERDEF_LITERAL_CHECK (NODE))->num_string) 1226 1227 #define USERDEF_LITERAL_TYPE(NODE) \ 1228 (TREE_TYPE (USERDEF_LITERAL_VALUE (NODE))) 1229 1230 extern tree build_userdef_literal (tree suffix_id, tree value, 1231 enum overflow_type overflow, 1232 tree num_string); 1233 1234 extern bool convert_vector_to_array_for_subscript (location_t, tree *, tree); 1235 1236 /* Possibe cases of scalar_to_vector conversion. */ 1237 enum stv_conv { 1238 stv_error, /* Error occurred. */ 1239 stv_nothing, /* Nothing happened. */ 1240 stv_firstarg, /* First argument must be expanded. */ 1241 stv_secondarg /* Second argument must be expanded. */ 1242 }; 1243 1244 extern enum stv_conv scalar_to_vector (location_t loc, enum tree_code code, 1245 tree op0, tree op1, bool); 1246 1247 extern tree find_inv_trees (tree *, int *, void *); 1248 extern tree replace_inv_trees (tree *, int *, void *); 1249 1250 extern bool reject_gcc_builtin (const_tree, location_t = UNKNOWN_LOCATION); 1251 extern bool valid_array_size_p (location_t, tree, tree); 1252 1253 /* In c-warn.c. */ 1254 extern void constant_expression_warning (tree); 1255 extern void constant_expression_error (tree); 1256 extern void overflow_warning (location_t, tree, tree = NULL_TREE); 1257 extern void warn_logical_operator (location_t, enum tree_code, tree, 1258 enum tree_code, tree, enum tree_code, tree); 1259 extern void warn_tautological_cmp (location_t, enum tree_code, tree, tree); 1260 extern void warn_logical_not_parentheses (location_t, enum tree_code, tree, 1261 tree); 1262 extern bool warn_if_unused_value (const_tree, location_t); 1263 extern bool strict_aliasing_warning (location_t, tree, tree); 1264 extern void sizeof_pointer_memaccess_warning (location_t *, tree, 1265 vec<tree, va_gc> *, tree *, 1266 bool (*) (tree, tree)); 1267 extern void check_main_parameter_types (tree decl); 1268 extern void warnings_for_convert_and_check (location_t, tree, tree, tree); 1269 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree, bool, 1270 bool); 1271 extern void warn_for_omitted_condop (location_t, tree); 1272 extern bool warn_for_restrict (unsigned, tree *, unsigned); 1273 1274 /* Places where an lvalue, or modifiable lvalue, may be required. 1275 Used to select diagnostic messages in lvalue_error and 1276 readonly_error. */ 1277 enum lvalue_use { 1278 lv_assign, 1279 lv_increment, 1280 lv_decrement, 1281 lv_addressof, 1282 lv_asm 1283 }; 1284 1285 extern void lvalue_error (location_t, enum lvalue_use); 1286 extern void invalid_indirection_error (location_t, tree, ref_operator); 1287 extern void readonly_error (location_t, tree, enum lvalue_use); 1288 extern void warn_array_subscript_with_type_char (location_t, tree); 1289 extern void warn_about_parentheses (location_t, 1290 enum tree_code, 1291 enum tree_code, tree, 1292 enum tree_code, tree); 1293 extern void warn_for_unused_label (tree label); 1294 extern void warn_for_div_by_zero (location_t, tree divisor); 1295 extern void warn_for_memset (location_t, tree, tree, int); 1296 extern void warn_for_sign_compare (location_t, 1297 tree orig_op0, tree orig_op1, 1298 tree op0, tree op1, 1299 tree result_type, 1300 enum tree_code resultcode); 1301 extern void do_warn_double_promotion (tree, tree, tree, const char *, 1302 location_t); 1303 extern void do_warn_unused_parameter (tree); 1304 extern void record_locally_defined_typedef (tree); 1305 extern void maybe_record_typedef_use (tree); 1306 extern void maybe_warn_unused_local_typedefs (void); 1307 extern void maybe_warn_bool_compare (location_t, enum tree_code, tree, tree); 1308 extern bool maybe_warn_shift_overflow (location_t, tree, tree); 1309 extern void warn_duplicated_cond_add_or_warn (location_t, tree, vec<tree> **); 1310 extern bool diagnose_mismatched_attributes (tree, tree); 1311 extern tree do_warn_duplicated_branches_r (tree *, int *, void *); 1312 extern void warn_for_multistatement_macros (location_t, location_t, 1313 location_t, enum rid); 1314 1315 /* In c-attribs.c. */ 1316 extern bool attribute_takes_identifier_p (const_tree); 1317 extern tree handle_unused_attribute (tree *, tree, tree, int, bool *); 1318 extern int parse_tm_stmt_attr (tree, int); 1319 extern int tm_attr_to_mask (tree); 1320 extern tree tm_mask_to_attr (int); 1321 extern tree find_tm_attribute (tree); 1322 1323 extern enum flt_eval_method 1324 excess_precision_mode_join (enum flt_eval_method, enum flt_eval_method); 1325 1326 extern int c_flt_eval_method (bool ts18661_p); 1327 extern void add_no_sanitize_value (tree node, unsigned int flags); 1328 1329 extern void maybe_add_include_fixit (rich_location *, const char *); 1330 extern void maybe_suggest_missing_token_insertion (rich_location *richloc, 1331 enum cpp_ttype token_type, 1332 location_t prev_token_loc); 1333 1334 #if CHECKING_P 1335 namespace selftest { 1336 /* Declarations for specific families of tests within c-family, 1337 by source file, in alphabetical order. */ 1338 extern void c_format_c_tests (void); 1339 extern void c_pretty_print_c_tests (void); 1340 extern void c_spellcheck_cc_tests (void); 1341 1342 /* The entrypoint for running all of the above tests. */ 1343 extern void c_family_tests (void); 1344 } // namespace selftest 1345 #endif /* #if CHECKING_P */ 1346 1347 #endif /* ! GCC_C_COMMON_H */ 1348