1/* Definitions for c-common.c. 2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 4 Free Software Foundation, Inc. 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 3, or (at your option) any later 11version. 12 13GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING3. If not see 20<http://www.gnu.org/licenses/>. */ 21 22#ifndef GCC_C_COMMON_H 23#define GCC_C_COMMON_H 24 25#include "splay-tree.h" 26#include "cpplib.h" 27#include "ggc.h" 28 29/* Usage of TREE_LANG_FLAG_?: 30 0: TREE_NEGATED_INT (in INTEGER_CST). 31 IDENTIFIER_MARKED (used by search routines). 32 DECL_PRETTY_FUNCTION_P (in VAR_DECL) 33 C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C) 34 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) 35 STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST) 36 C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C) 37 2: unused 38 3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST) 39 4: unused 40*/ 41 42/* Reserved identifiers. This is the union of all the keywords for C, 43 C++, and Objective-C. All the type modifiers have to be in one 44 block at the beginning, because they are used as mask bits. There 45 are 27 type modifiers; if we add many more we will have to redesign 46 the mask mechanism. */ 47 48enum rid 49{ 50 /* Modifiers: */ 51 /* C, in empirical order of frequency. */ 52 RID_STATIC = 0, 53 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, 54 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, 55 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, 56 57 /* C extensions */ 58 RID_COMPLEX, RID_THREAD, RID_SAT, 59 60 /* C++ */ 61 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, 62 63 /* ObjC */ 64 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, 65 66 /* C (reserved and imaginary types not implemented, so any use is a 67 syntax error) */ 68 RID_IMAGINARY, 69 70 /* C */ 71 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 72 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 73 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 74 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 75 RID_SIZEOF, 76 77 /* C extensions */ 78 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 79 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_CHOOSE_EXPR, 80 RID_TYPES_COMPATIBLE_P, 81 RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128, 82 RID_FRACT, RID_ACCUM, 83 84 /* This means to warn that this is a C++ keyword, and then treat it 85 as a normal identifier. */ 86 RID_CXX_COMPAT_WARN, 87 88 /* Too many ways of getting the name of a function as a string */ 89 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 90 91 /* C++ */ 92 RID_BOOL, RID_WCHAR, RID_CLASS, 93 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 94 RID_TEMPLATE, RID_NULL, RID_CATCH, 95 RID_DELETE, RID_FALSE, RID_NAMESPACE, 96 RID_NEW, RID_OFFSETOF, RID_OPERATOR, 97 RID_THIS, RID_THROW, RID_TRUE, 98 RID_TRY, RID_TYPENAME, RID_TYPEID, 99 RID_USING, RID_CHAR16, RID_CHAR32, 100 101 /* casts */ 102 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 103 104 /* C++ extensions */ 105 RID_HAS_NOTHROW_ASSIGN, RID_HAS_NOTHROW_CONSTRUCTOR, 106 RID_HAS_NOTHROW_COPY, RID_HAS_TRIVIAL_ASSIGN, 107 RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY, 108 RID_HAS_TRIVIAL_DESTRUCTOR, RID_HAS_VIRTUAL_DESTRUCTOR, 109 RID_IS_ABSTRACT, RID_IS_BASE_OF, 110 RID_IS_CONVERTIBLE_TO, RID_IS_CLASS, 111 RID_IS_EMPTY, RID_IS_ENUM, 112 RID_IS_POD, RID_IS_POLYMORPHIC, 113 RID_IS_STD_LAYOUT, RID_IS_TRIVIAL, 114 RID_IS_UNION, 115 116 /* C++0x */ 117 RID_STATIC_ASSERT, RID_CONSTEXPR, RID_DECLTYPE, 118 119 /* Objective-C */ 120 RID_AT_ENCODE, RID_AT_END, 121 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 122 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, 123 RID_AT_PROTOCOL, RID_AT_SELECTOR, 124 RID_AT_THROW, RID_AT_TRY, RID_AT_CATCH, 125 RID_AT_FINALLY, RID_AT_SYNCHRONIZED, 126 RID_AT_INTERFACE, 127 RID_AT_IMPLEMENTATION, 128 129 /* Named address support, mapping the keyword to a particular named address 130 number. Named address space 0 is reserved for the generic address. If 131 there are more than 254 named addresses, the addr_space_t type will need 132 to be grown from an unsigned char to unsigned short. */ 133 RID_ADDR_SPACE_0, /* generic address */ 134 RID_ADDR_SPACE_1, 135 RID_ADDR_SPACE_2, 136 RID_ADDR_SPACE_3, 137 RID_ADDR_SPACE_4, 138 RID_ADDR_SPACE_5, 139 RID_ADDR_SPACE_6, 140 RID_ADDR_SPACE_7, 141 RID_ADDR_SPACE_8, 142 RID_ADDR_SPACE_9, 143 RID_ADDR_SPACE_10, 144 RID_ADDR_SPACE_11, 145 RID_ADDR_SPACE_12, 146 RID_ADDR_SPACE_13, 147 RID_ADDR_SPACE_14, 148 RID_ADDR_SPACE_15, 149 150 RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0, 151 RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15, 152 153 RID_MAX, 154 155 RID_FIRST_MODIFIER = RID_STATIC, 156 RID_LAST_MODIFIER = RID_ONEWAY, 157 158 RID_FIRST_CXX0X = RID_STATIC_ASSERT, 159 RID_LAST_CXX0X = RID_DECLTYPE, 160 RID_FIRST_AT = RID_AT_ENCODE, 161 RID_LAST_AT = RID_AT_IMPLEMENTATION, 162 RID_FIRST_PQ = RID_IN, 163 RID_LAST_PQ = RID_ONEWAY 164}; 165 166#define OBJC_IS_AT_KEYWORD(rid) \ 167 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \ 168 (unsigned int) (rid) <= (unsigned int) RID_LAST_AT) 169 170#define OBJC_IS_PQ_KEYWORD(rid) \ 171 ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \ 172 (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ) 173 174/* The elements of `ridpointers' are identifier nodes for the reserved 175 type names and storage classes. It is indexed by a RID_... value. */ 176extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers; 177 178/* Standard named or nameless data types of the C compiler. */ 179 180enum c_tree_index 181{ 182 CTI_CHAR16_TYPE, 183 CTI_CHAR32_TYPE, 184 CTI_WCHAR_TYPE, 185 CTI_UNDERLYING_WCHAR_TYPE, 186 CTI_WINT_TYPE, 187 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 188 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 189 CTI_INTMAX_TYPE, 190 CTI_UINTMAX_TYPE, 191 CTI_WIDEST_INT_LIT_TYPE, 192 CTI_WIDEST_UINT_LIT_TYPE, 193 194 /* Types for <stdint.h>, that may not be defined on all 195 targets. */ 196 CTI_SIG_ATOMIC_TYPE, 197 CTI_INT8_TYPE, 198 CTI_INT16_TYPE, 199 CTI_INT32_TYPE, 200 CTI_INT64_TYPE, 201 CTI_UINT8_TYPE, 202 CTI_UINT16_TYPE, 203 CTI_UINT32_TYPE, 204 CTI_UINT64_TYPE, 205 CTI_INT_LEAST8_TYPE, 206 CTI_INT_LEAST16_TYPE, 207 CTI_INT_LEAST32_TYPE, 208 CTI_INT_LEAST64_TYPE, 209 CTI_UINT_LEAST8_TYPE, 210 CTI_UINT_LEAST16_TYPE, 211 CTI_UINT_LEAST32_TYPE, 212 CTI_UINT_LEAST64_TYPE, 213 CTI_INT_FAST8_TYPE, 214 CTI_INT_FAST16_TYPE, 215 CTI_INT_FAST32_TYPE, 216 CTI_INT_FAST64_TYPE, 217 CTI_UINT_FAST8_TYPE, 218 CTI_UINT_FAST16_TYPE, 219 CTI_UINT_FAST32_TYPE, 220 CTI_UINT_FAST64_TYPE, 221 CTI_INTPTR_TYPE, 222 CTI_UINTPTR_TYPE, 223 224 CTI_CHAR_ARRAY_TYPE, 225 CTI_CHAR16_ARRAY_TYPE, 226 CTI_CHAR32_ARRAY_TYPE, 227 CTI_WCHAR_ARRAY_TYPE, 228 CTI_INT_ARRAY_TYPE, 229 CTI_STRING_TYPE, 230 CTI_CONST_STRING_TYPE, 231 232 /* Type for boolean expressions (bool in C++, int in C). */ 233 CTI_TRUTHVALUE_TYPE, 234 CTI_TRUTHVALUE_TRUE, 235 CTI_TRUTHVALUE_FALSE, 236 237 CTI_DEFAULT_FUNCTION_TYPE, 238 239 /* These are not types, but we have to look them up all the time. */ 240 CTI_FUNCTION_NAME_DECL, 241 CTI_PRETTY_FUNCTION_NAME_DECL, 242 CTI_C99_FUNCTION_NAME_DECL, 243 CTI_SAVED_FUNCTION_NAME_DECLS, 244 245 CTI_VOID_ZERO, 246 247 CTI_NULL, 248 249 CTI_MAX 250}; 251 252#define C_CPP_HASHNODE(id) \ 253 (&(((struct c_common_identifier *) (id))->node)) 254#define C_RID_CODE(id) \ 255 ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code)) 256#define C_SET_RID_CODE(id, code) \ 257 (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code) 258 259/* Identifier part common to the C front ends. Inherits from 260 tree_identifier, despite appearances. */ 261struct GTY(()) c_common_identifier { 262 struct tree_common common; 263 struct cpp_hashnode node; 264}; 265 266/* An entry in the reserved keyword table. */ 267 268struct c_common_resword 269{ 270 const char *const word; 271 ENUM_BITFIELD(rid) const rid : 16; 272 const unsigned int disable : 16; 273}; 274 275/* Disable mask. Keywords are disabled if (reswords[i].disable & 276 mask) is _true_. Thus for keywords which are present in all 277 languages the disable field is zero. */ 278 279#define D_CONLY 0x001 /* C only (not in C++). */ 280#define D_CXXONLY 0x002 /* C++ only (not in C). */ 281#define D_C99 0x004 /* In C, C99 only. */ 282#define D_CXX0X 0x008 /* In C++, C++0X only. */ 283#define D_EXT 0x010 /* GCC extension. */ 284#define D_EXT89 0x020 /* GCC extension incorporated in C99. */ 285#define D_ASM 0x040 /* Disabled by -fno-asm. */ 286#define D_OBJC 0x080 /* In Objective C and neither C nor C++. */ 287#define D_CXX_OBJC 0x100 /* In Objective C, and C++, but not C. */ 288#define D_CXXWARN 0x200 /* In C warn with -Wcxx-compat. */ 289 290/* Macro for backends to define named address keywords. */ 291#define ADDR_SPACE_KEYWORD(STRING, VALUE) \ 292 { STRING, RID_FIRST_ADDR_SPACE + (VALUE), D_CONLY | D_EXT } 293 294/* The reserved keyword table. */ 295extern const struct c_common_resword c_common_reswords[]; 296 297/* The number of items in the reserved keyword table. */ 298extern const unsigned int num_c_common_reswords; 299 300#define char16_type_node c_global_trees[CTI_CHAR16_TYPE] 301#define char32_type_node c_global_trees[CTI_CHAR32_TYPE] 302#define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 303#define underlying_wchar_type_node c_global_trees[CTI_UNDERLYING_WCHAR_TYPE] 304#define wint_type_node c_global_trees[CTI_WINT_TYPE] 305#define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 306#define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 307#define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 308#define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 309#define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 310#define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 311 312#define sig_atomic_type_node c_global_trees[CTI_SIG_ATOMIC_TYPE] 313#define int8_type_node c_global_trees[CTI_INT8_TYPE] 314#define int16_type_node c_global_trees[CTI_INT16_TYPE] 315#define int32_type_node c_global_trees[CTI_INT32_TYPE] 316#define int64_type_node c_global_trees[CTI_INT64_TYPE] 317#define uint8_type_node c_global_trees[CTI_UINT8_TYPE] 318#define uint16_type_node c_global_trees[CTI_UINT16_TYPE] 319#define c_uint32_type_node c_global_trees[CTI_UINT32_TYPE] 320#define c_uint64_type_node c_global_trees[CTI_UINT64_TYPE] 321#define int_least8_type_node c_global_trees[CTI_INT_LEAST8_TYPE] 322#define int_least16_type_node c_global_trees[CTI_INT_LEAST16_TYPE] 323#define int_least32_type_node c_global_trees[CTI_INT_LEAST32_TYPE] 324#define int_least64_type_node c_global_trees[CTI_INT_LEAST64_TYPE] 325#define uint_least8_type_node c_global_trees[CTI_UINT_LEAST8_TYPE] 326#define uint_least16_type_node c_global_trees[CTI_UINT_LEAST16_TYPE] 327#define uint_least32_type_node c_global_trees[CTI_UINT_LEAST32_TYPE] 328#define uint_least64_type_node c_global_trees[CTI_UINT_LEAST64_TYPE] 329#define int_fast8_type_node c_global_trees[CTI_INT_FAST8_TYPE] 330#define int_fast16_type_node c_global_trees[CTI_INT_FAST16_TYPE] 331#define int_fast32_type_node c_global_trees[CTI_INT_FAST32_TYPE] 332#define int_fast64_type_node c_global_trees[CTI_INT_FAST64_TYPE] 333#define uint_fast8_type_node c_global_trees[CTI_UINT_FAST8_TYPE] 334#define uint_fast16_type_node c_global_trees[CTI_UINT_FAST16_TYPE] 335#define uint_fast32_type_node c_global_trees[CTI_UINT_FAST32_TYPE] 336#define uint_fast64_type_node c_global_trees[CTI_UINT_FAST64_TYPE] 337#define intptr_type_node c_global_trees[CTI_INTPTR_TYPE] 338#define uintptr_type_node c_global_trees[CTI_UINTPTR_TYPE] 339 340#define truthvalue_type_node c_global_trees[CTI_TRUTHVALUE_TYPE] 341#define truthvalue_true_node c_global_trees[CTI_TRUTHVALUE_TRUE] 342#define truthvalue_false_node c_global_trees[CTI_TRUTHVALUE_FALSE] 343 344#define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 345#define char16_array_type_node c_global_trees[CTI_CHAR16_ARRAY_TYPE] 346#define char32_array_type_node c_global_trees[CTI_CHAR32_ARRAY_TYPE] 347#define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 348#define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] 349#define string_type_node c_global_trees[CTI_STRING_TYPE] 350#define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 351 352#define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 353 354#define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 355#define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 356#define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 357#define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 358 359/* A node for `((void) 0)'. */ 360#define void_zero_node c_global_trees[CTI_VOID_ZERO] 361 362/* The node for C++ `__null'. */ 363#define null_node c_global_trees[CTI_NULL] 364 365extern GTY(()) tree c_global_trees[CTI_MAX]; 366 367/* In a RECORD_TYPE, a sorted array of the fields of the type, not a 368 tree for size reasons. */ 369struct GTY(()) sorted_fields_type { 370 int len; 371 tree GTY((length ("%h.len"))) elts[1]; 372}; 373 374/* Mark which labels are explicitly declared. 375 These may be shadowed, and may be referenced from nested functions. */ 376#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 377 378typedef enum c_language_kind 379{ 380 clk_c = 0, /* C90, C94 or C99 */ 381 clk_objc = 1, /* clk_c with ObjC features. */ 382 clk_cxx = 2, /* ANSI/ISO C++ */ 383 clk_objcxx = 3 /* clk_cxx with ObjC features. */ 384} 385c_language_kind; 386 387/* To test for a specific language use c_language, defined by each 388 front end. For "ObjC features" or "not C++" use the macros. */ 389extern c_language_kind c_language; 390 391#define c_dialect_cxx() ((c_language & clk_cxx) != 0) 392#define c_dialect_objc() ((c_language & clk_objc) != 0) 393 394/* The various name of operator that appears in error messages. */ 395typedef enum ref_operator { 396 /* NULL */ 397 RO_NULL, 398 /* array indexing */ 399 RO_ARRAY_INDEXING, 400 /* unary * */ 401 RO_UNARY_STAR, 402 /* -> */ 403 RO_ARROW, 404 /* implicit conversion */ 405 RO_IMPLICIT_CONVERSION 406} ref_operator; 407 408/* Information about a statement tree. */ 409 410struct GTY(()) stmt_tree_s { 411 /* The current statement list being collected. */ 412 tree x_cur_stmt_list; 413 414 /* In C++, Nonzero if we should treat statements as full 415 expressions. In particular, this variable is no-zero if at the 416 end of a statement we should destroy any temporaries created 417 during that statement. Similarly, if, at the end of a block, we 418 should destroy any local variables in this block. Normally, this 419 variable is nonzero, since those are the normal semantics of 420 C++. 421 422 However, in order to represent aggregate initialization code as 423 tree structure, we use statement-expressions. The statements 424 within the statement expression should not result in cleanups 425 being run until the entire enclosing statement is complete. 426 427 This flag has no effect in C. */ 428 int stmts_are_full_exprs_p; 429}; 430 431typedef struct stmt_tree_s *stmt_tree; 432 433/* Global state pertinent to the current function. Some C dialects 434 extend this structure with additional fields. */ 435 436struct GTY(()) c_language_function { 437 /* While we are parsing the function, this contains information 438 about the statement-tree that we are building. */ 439 struct stmt_tree_s x_stmt_tree; 440}; 441 442/* When building a statement-tree, this is the current statement list 443 being collected. It's TREE_CHAIN is a back-pointer to the previous 444 statement list. */ 445 446#define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list) 447 448/* Language-specific hooks. */ 449 450/* If non-NULL, this function is called after a precompile header file 451 is loaded. */ 452extern void (*lang_post_pch_load) (void); 453 454extern void push_file_scope (void); 455extern void pop_file_scope (void); 456extern stmt_tree current_stmt_tree (void); 457extern tree push_stmt_list (void); 458extern tree pop_stmt_list (tree); 459extern tree add_stmt (tree); 460extern void push_cleanup (tree, tree, bool); 461extern tree pushdecl_top_level (tree); 462extern tree pushdecl (tree); 463extern tree build_modify_expr (location_t, tree, tree, enum tree_code, 464 location_t, tree, tree); 465extern tree build_indirect_ref (location_t, tree, ref_operator); 466 467extern int c_expand_decl (tree); 468 469extern int field_decl_cmp (const void *, const void *); 470extern void resort_sorted_fields (void *, void *, gt_pointer_operator, 471 void *); 472extern bool has_c_linkage (const_tree decl); 473 474/* Switches common to the C front ends. */ 475 476/* Nonzero if prepreprocessing only. */ 477 478extern int flag_preprocess_only; 479 480/* Zero means that faster, ...NonNil variants of objc_msgSend... 481 calls will be used in ObjC; passing nil receivers to such calls 482 will most likely result in crashes. */ 483extern int flag_nil_receivers; 484 485/* Nonzero means that we will allow new ObjC exception syntax (@throw, 486 @try, etc.) in source code. */ 487extern int flag_objc_exceptions; 488 489/* Nonzero means that we generate NeXT setjmp based exceptions. */ 490extern int flag_objc_sjlj_exceptions; 491 492/* Nonzero means that code generation will be altered to support 493 "zero-link" execution. This currently affects ObjC only, but may 494 affect other languages in the future. */ 495extern int flag_zero_link; 496 497/* Nonzero means emit an '__OBJC, __image_info' for the current translation 498 unit. It will inform the ObjC runtime that class definition(s) herein 499 contained are to replace one(s) previously loaded. */ 500extern int flag_replace_objc_classes; 501 502/* Nonzero means don't output line number information. */ 503 504extern char flag_no_line_commands; 505 506/* Nonzero causes -E output not to be done, but directives such as 507 #define that have side effects are still obeyed. */ 508 509extern char flag_no_output; 510 511/* Nonzero means dump macros in some fashion; contains the 'D', 'M', 512 'N' or 'U' of the command line switch. */ 513 514extern char flag_dump_macros; 515 516/* Nonzero means pass #include lines through to the output. */ 517 518extern char flag_dump_includes; 519 520/* Nonzero means process PCH files while preprocessing. */ 521 522extern bool flag_pch_preprocess; 523 524/* The file name to which we should write a precompiled header, or 525 NULL if no header will be written in this compile. */ 526 527extern const char *pch_file; 528 529/* Nonzero if an ISO standard was selected. It rejects macros in the 530 user's namespace. */ 531 532extern int flag_iso; 533 534/* Nonzero if -undef was given. It suppresses target built-in macros 535 and assertions. */ 536 537extern int flag_undef; 538 539/* Nonzero means don't recognize the non-ANSI builtin functions. */ 540 541extern int flag_no_builtin; 542 543/* Nonzero means don't recognize the non-ANSI builtin functions. 544 -ansi sets this. */ 545 546extern int flag_no_nonansi_builtin; 547 548/* Nonzero means give `double' the same size as `float'. */ 549 550extern int flag_short_double; 551 552/* Nonzero means give `wchar_t' the same size as `short'. */ 553 554extern int flag_short_wchar; 555 556/* Nonzero means allow implicit conversions between vectors with 557 differing numbers of subparts and/or differing element types. */ 558extern int flag_lax_vector_conversions; 559 560/* Nonzero means allow Microsoft extensions without warnings or errors. */ 561extern int flag_ms_extensions; 562 563/* Nonzero means don't recognize the keyword `asm'. */ 564 565extern int flag_no_asm; 566 567/* Nonzero means give string constants the type `const char *', as mandated 568 by the standard. */ 569 570extern int flag_const_strings; 571 572/* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ 573 574extern int flag_signed_bitfields; 575 576/* Warn about #pragma directives that are not recognized. */ 577 578extern int warn_unknown_pragmas; /* Tri state variable. */ 579 580/* Warn about format/argument anomalies in calls to formatted I/O functions 581 (*printf, *scanf, strftime, strfmon, etc.). */ 582 583extern int warn_format; 584 585 586/* C/ObjC language option variables. */ 587 588 589/* Nonzero means allow type mismatches in conditional expressions; 590 just make their values `void'. */ 591 592extern int flag_cond_mismatch; 593 594/* Nonzero means enable C89 Amendment 1 features. */ 595 596extern int flag_isoc94; 597 598/* Nonzero means use the ISO C99 dialect of C. */ 599 600extern int flag_isoc99; 601 602/* Nonzero means that we have builtin functions, and main is an int. */ 603 604extern int flag_hosted; 605 606/* ObjC language option variables. */ 607 608 609/* Open and close the file for outputting class declarations, if 610 requested (ObjC). */ 611 612extern int flag_gen_declaration; 613 614/* Tells the compiler that this is a special run. Do not perform any 615 compiling, instead we are to test some platform dependent features 616 and output a C header file with appropriate definitions. */ 617 618extern int print_struct_values; 619 620/* ???. Undocumented. */ 621 622extern const char *constant_string_class_name; 623 624 625/* C++ language option variables. */ 626 627 628/* Nonzero means don't recognize any extension keywords. */ 629 630extern int flag_no_gnu_keywords; 631 632/* Nonzero means do emit exported implementations of functions even if 633 they can be inlined. */ 634 635extern int flag_implement_inlines; 636 637/* Nonzero means that implicit instantiations will be emitted if needed. */ 638 639extern int flag_implicit_templates; 640 641/* Nonzero means that implicit instantiations of inline templates will be 642 emitted if needed, even if instantiations of non-inline templates 643 aren't. */ 644 645extern int flag_implicit_inline_templates; 646 647/* Nonzero means generate separate instantiation control files and 648 juggle them at link time. */ 649 650extern int flag_use_repository; 651 652/* Nonzero if we want to issue diagnostics that the standard says are not 653 required. */ 654 655extern int flag_optional_diags; 656 657/* Nonzero means we should attempt to elide constructors when possible. */ 658 659extern int flag_elide_constructors; 660 661/* Nonzero means that member functions defined in class scope are 662 inline by default. */ 663 664extern int flag_default_inline; 665 666/* Controls whether compiler generates 'type descriptor' that give 667 run-time type information. */ 668 669extern int flag_rtti; 670 671/* Nonzero if we want to conserve space in the .o files. We do this 672 by putting uninitialized data and runtime initialized data into 673 .common instead of .data at the expense of not flagging multiple 674 definitions. */ 675 676extern int flag_conserve_space; 677 678/* Nonzero if we want to obey access control semantics. */ 679 680extern int flag_access_control; 681 682/* Nonzero if we want to check the return value of new and avoid calling 683 constructors if it is a null pointer. */ 684 685extern int flag_check_new; 686 687/* The supported C++ dialects. */ 688 689enum cxx_dialect { 690 /* C++98 */ 691 cxx98, 692 /* Experimental features that are likely to become part of 693 C++0x. */ 694 cxx0x 695}; 696 697/* The C++ dialect being used. C++98 is the default. */ 698extern enum cxx_dialect cxx_dialect; 699 700/* Nonzero if we want the new ISO rules for pushing a new scope for `for' 701 initialization variables. 702 0: Old rules, set by -fno-for-scope. 703 2: New ISO rules, set by -ffor-scope. 704 1: Try to implement new ISO rules, but with backup compatibility 705 (and warnings). This is the default, for now. */ 706 707extern int flag_new_for_scope; 708 709/* Nonzero if we want to emit defined symbols with common-like linkage as 710 weak symbols where possible, in order to conform to C++ semantics. 711 Otherwise, emit them as local symbols. */ 712 713extern int flag_weak; 714 715/* 0 means we want the preprocessor to not emit line directives for 716 the current working directory. 1 means we want it to do it. -1 717 means we should decide depending on whether debugging information 718 is being emitted or not. */ 719 720extern int flag_working_directory; 721 722/* Nonzero to use __cxa_atexit, rather than atexit, to register 723 destructors for local statics and global objects. */ 724 725extern int flag_use_cxa_atexit; 726 727/* Nonzero to use __cxa_get_exception_ptr in the C++ exception-handling 728 logic. */ 729 730extern int flag_use_cxa_get_exception_ptr; 731 732/* Nonzero means to implement standard semantics for exception 733 specifications, calling unexpected if an exception is thrown that 734 doesn't match the specification. Zero means to treat them as 735 assertions and optimize accordingly, but not check them. */ 736 737extern int flag_enforce_eh_specs; 738 739/* Nonzero (the default) means to generate thread-safe code for 740 initializing local statics. */ 741 742extern int flag_threadsafe_statics; 743 744/* Nonzero if we want to pretty-print template specializations as the 745 template signature followed by the arguments. */ 746 747extern int flag_pretty_templates; 748 749/* Nonzero means warn about implicit declarations. */ 750 751extern int warn_implicit; 752 753/* Warn about using __null (as NULL in C++) as sentinel. For code compiled 754 with GCC this doesn't matter as __null is guaranteed to have the right 755 size. */ 756 757extern int warn_strict_null_sentinel; 758 759/* Maximum template instantiation depth. This limit is rather 760 arbitrary, but it exists to limit the time it takes to notice 761 infinite template instantiations. */ 762 763extern int max_tinst_depth; 764 765/* Nonzero means that we should not issue warnings about problems that 766 occur when the code is executed, because the code being processed 767 is not expected to be executed. This is set during parsing. This 768 is used for cases like sizeof() and "0 ? a : b". This is a count, 769 not a bool, because unexecuted expressions can nest. */ 770 771extern int c_inhibit_evaluation_warnings; 772 773/* Whether lexing has been completed, so subsequent preprocessor 774 errors should use the compiler's input_location. */ 775 776extern bool done_lexing; 777 778/* C types are partitioned into three subsets: object, function, and 779 incomplete types. */ 780#define C_TYPE_OBJECT_P(type) \ 781 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 782 783#define C_TYPE_INCOMPLETE_P(type) \ 784 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 785 786#define C_TYPE_FUNCTION_P(type) \ 787 (TREE_CODE (type) == FUNCTION_TYPE) 788 789/* For convenience we define a single macro to identify the class of 790 object or incomplete types. */ 791#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 792 (!C_TYPE_FUNCTION_P (type)) 793 794/* Attribute table common to the C front ends. */ 795extern const struct attribute_spec c_common_attribute_table[]; 796extern const struct attribute_spec c_common_format_attribute_table[]; 797 798/* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 799 ID is the identifier to use, NAME is the string. 800 TYPE_DEP indicates whether it depends on type of the function or not 801 (i.e. __PRETTY_FUNCTION__). */ 802 803extern tree (*make_fname_decl) (location_t, tree, int); 804 805extern bool in_late_binary_op; 806extern const char *c_addr_space_name (addr_space_t as); 807extern tree identifier_global_value (tree); 808extern void record_builtin_type (enum rid, const char *, tree); 809extern tree build_void_list_node (void); 810extern void start_fname_decls (void); 811extern void finish_fname_decls (void); 812extern const char *fname_as_string (int); 813extern tree fname_decl (location_t, unsigned, tree); 814 815extern void check_function_arguments (tree, int, tree *, tree); 816extern void check_function_arguments_recurse (void (*) 817 (void *, tree, 818 unsigned HOST_WIDE_INT), 819 void *, tree, 820 unsigned HOST_WIDE_INT); 821extern bool check_builtin_function_arguments (tree, int, tree *); 822extern void check_function_format (tree, int, tree *); 823extern void set_Wformat (int); 824extern tree handle_format_attribute (tree *, tree, tree, int, bool *); 825extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *); 826extern int c_common_handle_option (size_t code, const char *arg, int value); 827extern bool c_common_missing_argument (const char *opt, size_t code); 828extern tree c_common_type_for_mode (enum machine_mode, int); 829extern tree c_common_type_for_size (unsigned int, int); 830extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int, 831 int, int); 832extern tree c_common_unsigned_type (tree); 833extern tree c_common_signed_type (tree); 834extern tree c_common_signed_or_unsigned_type (int, tree); 835extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int); 836extern bool decl_with_nonnull_addr_p (const_tree); 837extern tree c_fully_fold (tree, bool, bool *); 838extern tree decl_constant_value_for_optimization (tree); 839extern tree c_wrap_maybe_const (tree, bool); 840extern tree c_save_expr (tree); 841extern tree c_common_truthvalue_conversion (location_t, tree); 842extern void c_apply_type_quals_to_decl (int, tree); 843extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int); 844extern tree c_alignof_expr (location_t, tree); 845/* Print an error message for invalid operands to arith operation CODE. 846 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 847extern void binary_op_error (location_t, enum tree_code, tree, tree); 848extern tree fix_string_type (tree); 849struct varray_head_tag; 850extern void constant_expression_warning (tree); 851extern void constant_expression_error (tree); 852extern bool strict_aliasing_warning (tree, tree, tree); 853extern void warnings_for_convert_and_check (tree, tree, tree); 854extern tree convert_and_check (tree, tree); 855extern void overflow_warning (location_t, tree); 856extern void warn_logical_operator (location_t, enum tree_code, tree, 857 enum tree_code, tree, enum tree_code, tree); 858extern void check_main_parameter_types (tree decl); 859extern bool c_determine_visibility (tree); 860extern bool same_scalar_type_ignoring_signedness (tree, tree); 861extern void mark_valid_location_for_stdc_pragma (bool); 862extern bool valid_location_for_stdc_pragma_p (void); 863extern void set_float_const_decimal64 (void); 864extern void clear_float_const_decimal64 (void); 865extern bool float_const_decimal64_p (void); 866 867#define c_sizeof(LOC, T) c_sizeof_or_alignof_type (LOC, T, true, 1) 868#define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1) 869 870/* Subroutine of build_binary_op, used for certain operations. */ 871extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise); 872 873/* Subroutine of build_binary_op, used for comparison operations. 874 See if the operands have both been converted from subword integer types 875 and, if so, perhaps change them both back to their original type. */ 876extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *); 877 878extern tree pointer_int_sum (location_t, enum tree_code, tree, tree); 879 880/* Add qualifiers to a type, in the fashion for C. */ 881extern tree c_build_qualified_type (tree, int); 882 883/* Build tree nodes and builtin functions common to both C and C++ language 884 frontends. */ 885extern void c_common_nodes_and_builtins (void); 886 887extern void disable_builtin_function (const char *); 888 889extern void set_compound_literal_name (tree decl); 890 891extern tree build_va_arg (location_t, tree, tree); 892 893extern unsigned int c_common_init_options (unsigned int, const char **); 894extern bool c_common_post_options (const char **); 895extern bool c_common_init (void); 896extern void c_common_finish (void); 897extern void c_common_parse_file (int); 898extern alias_set_type c_common_get_alias_set (tree); 899extern void c_register_builtin_type (tree, const char*); 900extern bool c_promoting_integer_type_p (const_tree); 901extern int self_promoting_args_p (const_tree); 902extern tree strip_pointer_operator (tree); 903extern tree strip_pointer_or_array_types (tree); 904extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT); 905 906/* This is the basic parsing function. */ 907extern void c_parse_file (void); 908/* This is misnamed, it actually performs end-of-compilation processing. */ 909extern void finish_file (void); 910 911 912/* These macros provide convenient access to the various _STMT nodes. */ 913 914/* Nonzero if a given STATEMENT_LIST represents the outermost binding 915 if a statement expression. */ 916#define STATEMENT_LIST_STMT_EXPR(NODE) \ 917 TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE)) 918 919/* Nonzero if a label has been added to the statement list. */ 920#define STATEMENT_LIST_HAS_LABEL(NODE) \ 921 TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE)) 922 923/* C_MAYBE_CONST_EXPR accessors. */ 924#define C_MAYBE_CONST_EXPR_PRE(NODE) \ 925 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0) 926#define C_MAYBE_CONST_EXPR_EXPR(NODE) \ 927 TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1) 928#define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE) \ 929 TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 930#define C_MAYBE_CONST_EXPR_NON_CONST(NODE) \ 931 TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE)) 932#define EXPR_INT_CONST_OPERANDS(EXPR) \ 933 (INTEGRAL_TYPE_P (TREE_TYPE (EXPR)) \ 934 && (TREE_CODE (EXPR) == INTEGER_CST \ 935 || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR \ 936 && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR)))) 937 938/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 939#define DECL_C_BIT_FIELD(NODE) \ 940 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 941#define SET_DECL_C_BIT_FIELD(NODE) \ 942 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 943#define CLEAR_DECL_C_BIT_FIELD(NODE) \ 944 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 945 946extern tree do_case (location_t, tree, tree); 947extern tree build_stmt (location_t, enum tree_code, ...); 948extern tree build_case_label (location_t, tree, tree, tree); 949 950/* These functions must be defined by each front-end which implements 951 a variant of the C language. They are used in c-common.c. */ 952 953extern tree build_unary_op (location_t, enum tree_code, tree, int); 954extern tree build_binary_op (location_t, enum tree_code, tree, tree, int); 955extern tree perform_integral_promotions (tree); 956 957/* These functions must be defined by each front-end which implements 958 a variant of the C language. They are used by port files. */ 959 960extern tree default_conversion (tree); 961 962/* Given two integer or real types, return the type for their sum. 963 Given two compatible ANSI C types, returns the merged type. */ 964 965extern tree common_type (tree, tree); 966 967extern tree decl_constant_value (tree); 968 969/* Handle increment and decrement of boolean types. */ 970extern tree boolean_increment (enum tree_code, tree); 971 972extern int case_compare (splay_tree_key, splay_tree_key); 973 974extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree); 975 976extern void c_do_switch_warnings (splay_tree, location_t, tree, tree); 977 978extern tree build_function_call (location_t, tree, tree); 979 980extern tree build_function_call_vec (location_t, tree, 981 VEC(tree,gc) *, VEC(tree,gc) *); 982 983extern tree resolve_overloaded_builtin (location_t, tree, VEC(tree,gc) *); 984 985extern tree finish_label_address_expr (tree, location_t); 986 987/* Same function prototype, but the C and C++ front ends have 988 different implementations. Used in c-common.c. */ 989extern tree lookup_label (tree); 990extern tree lookup_name (tree); 991extern bool lvalue_p (const_tree); 992 993extern bool vector_targets_convertible_p (const_tree t1, const_tree t2); 994extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note); 995 996extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *); 997 998extern void init_c_lex (void); 999 1000extern void c_cpp_builtins (cpp_reader *); 1001extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree); 1002 1003/* Positive if an implicit `extern "C"' scope has just been entered; 1004 negative if such a scope has just been exited. */ 1005extern GTY(()) int pending_lang_change; 1006 1007/* Information recorded about each file examined during compilation. */ 1008 1009struct c_fileinfo 1010{ 1011 int time; /* Time spent in the file. */ 1012 1013 /* Flags used only by C++. 1014 INTERFACE_ONLY nonzero means that we are in an "interface" section 1015 of the compiler. INTERFACE_UNKNOWN nonzero means we cannot trust 1016 the value of INTERFACE_ONLY. If INTERFACE_UNKNOWN is zero and 1017 INTERFACE_ONLY is zero, it means that we are responsible for 1018 exporting definitions that others might need. */ 1019 short interface_only; 1020 short interface_unknown; 1021}; 1022 1023struct c_fileinfo *get_fileinfo (const char *); 1024extern void dump_time_statistics (void); 1025 1026extern bool c_dump_tree (void *, tree); 1027 1028extern void verify_sequence_points (tree); 1029 1030extern tree fold_offsetof (tree, tree); 1031 1032/* Places where an lvalue, or modifiable lvalue, may be required. 1033 Used to select diagnostic messages in lvalue_error and 1034 readonly_error. */ 1035enum lvalue_use { 1036 lv_assign, 1037 lv_increment, 1038 lv_decrement, 1039 lv_addressof, 1040 lv_asm 1041}; 1042 1043extern void lvalue_error (enum lvalue_use); 1044 1045extern int complete_array_type (tree *, tree, bool); 1046 1047extern tree builtin_type_for_size (int, bool); 1048 1049extern void warn_array_subscript_with_type_char (tree); 1050extern void warn_about_parentheses (enum tree_code, 1051 enum tree_code, tree, 1052 enum tree_code, tree); 1053extern void warn_for_unused_label (tree label); 1054extern void warn_for_div_by_zero (location_t, tree divisor); 1055extern void warn_for_sign_compare (location_t, 1056 tree orig_op0, tree orig_op1, 1057 tree op0, tree op1, 1058 tree result_type, 1059 enum tree_code resultcode); 1060extern void set_underlying_type (tree x); 1061extern bool is_typedef_decl (tree x); 1062extern VEC(tree,gc) *make_tree_vector (void); 1063extern void release_tree_vector (VEC(tree,gc) *); 1064extern VEC(tree,gc) *make_tree_vector_single (tree); 1065extern VEC(tree,gc) *make_tree_vector_copy (const VEC(tree,gc) *); 1066 1067/* In c-gimplify.c */ 1068extern void c_genericize (tree); 1069extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *); 1070extern tree c_build_bind_expr (location_t, tree, tree); 1071 1072/* In c-pch.c */ 1073extern void pch_init (void); 1074extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd); 1075extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd, 1076 const char *orig); 1077extern void c_common_write_pch (void); 1078extern void c_common_no_more_pch (void); 1079extern void c_common_pch_pragma (cpp_reader *pfile, const char *); 1080extern void c_common_print_pch_checksum (FILE *f); 1081 1082/* In *-checksum.c */ 1083extern const unsigned char executable_checksum[16]; 1084 1085/* In c-cppbuiltin.c */ 1086extern void builtin_define_std (const char *macro); 1087extern void builtin_define_with_value (const char *, const char *, int); 1088extern void c_stddef_cpp_builtins (void); 1089extern void fe_file_change (const struct line_map *); 1090extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char); 1091 1092/* Objective-C / Objective-C++ entry points. */ 1093 1094/* The following ObjC/ObjC++ functions are called by the C and/or C++ 1095 front-ends; they all must have corresponding stubs in stub-objc.c. */ 1096extern tree objc_is_class_name (tree); 1097extern tree objc_is_object_ptr (tree); 1098extern void objc_check_decl (tree); 1099extern int objc_is_reserved_word (tree); 1100extern bool objc_compare_types (tree, tree, int, tree); 1101extern void objc_volatilize_decl (tree); 1102extern bool objc_type_quals_match (tree, tree); 1103extern tree objc_rewrite_function_call (tree, tree); 1104extern tree objc_message_selector (void); 1105extern tree objc_lookup_ivar (tree, tree); 1106extern void objc_clear_super_receiver (void); 1107extern int objc_is_public (tree, tree); 1108extern tree objc_is_id (tree); 1109extern void objc_declare_alias (tree, tree); 1110extern void objc_declare_class (tree); 1111extern void objc_declare_protocols (tree); 1112extern tree objc_build_message_expr (tree); 1113extern tree objc_finish_message_expr (tree, tree, tree); 1114extern tree objc_build_selector_expr (location_t, tree); 1115extern tree objc_build_protocol_expr (tree); 1116extern tree objc_build_encode_expr (tree); 1117extern tree objc_build_string_object (tree); 1118extern tree objc_get_protocol_qualified_type (tree, tree); 1119extern tree objc_get_class_reference (tree); 1120extern tree objc_get_class_ivars (tree); 1121extern void objc_start_class_interface (tree, tree, tree); 1122extern void objc_start_category_interface (tree, tree, tree); 1123extern void objc_start_protocol (tree, tree); 1124extern void objc_continue_interface (void); 1125extern void objc_finish_interface (void); 1126extern void objc_start_class_implementation (tree, tree); 1127extern void objc_start_category_implementation (tree, tree); 1128extern void objc_continue_implementation (void); 1129extern void objc_finish_implementation (void); 1130extern void objc_set_visibility (int); 1131extern void objc_set_method_type (enum tree_code); 1132extern tree objc_build_method_signature (tree, tree, tree, bool); 1133extern void objc_add_method_declaration (tree); 1134extern void objc_start_method_definition (tree); 1135extern void objc_finish_method_definition (tree); 1136extern void objc_add_instance_variable (tree); 1137extern tree objc_build_keyword_decl (tree, tree, tree); 1138extern tree objc_build_throw_stmt (location_t, tree); 1139extern void objc_begin_try_stmt (location_t, tree); 1140extern tree objc_finish_try_stmt (void); 1141extern void objc_begin_catch_clause (tree); 1142extern void objc_finish_catch_clause (void); 1143extern void objc_build_finally_clause (location_t, tree); 1144extern tree objc_build_synchronized (location_t, tree, tree); 1145extern int objc_static_init_needed_p (void); 1146extern tree objc_generate_static_init_call (tree); 1147extern tree objc_generate_write_barrier (tree, enum tree_code, tree); 1148 1149/* The following are provided by the C and C++ front-ends, and called by 1150 ObjC/ObjC++. */ 1151extern void *objc_get_current_scope (void); 1152extern void objc_mark_locals_volatile (void *); 1153 1154/* In c-ppoutput.c */ 1155extern void init_pp_output (FILE *); 1156extern void preprocess_file (cpp_reader *); 1157extern void pp_file_change (const struct line_map *); 1158extern void pp_dir_change (cpp_reader *, const char *); 1159extern bool check_missing_format_attribute (tree, tree); 1160 1161/* In c-omp.c */ 1162extern tree c_finish_omp_master (location_t, tree); 1163extern tree c_finish_omp_critical (location_t, tree, tree); 1164extern tree c_finish_omp_ordered (location_t, tree); 1165extern void c_finish_omp_barrier (location_t); 1166extern tree c_finish_omp_atomic (location_t, enum tree_code, tree, tree); 1167extern void c_finish_omp_flush (location_t); 1168extern void c_finish_omp_taskwait (location_t); 1169extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree); 1170extern void c_split_parallel_clauses (location_t, tree, tree *, tree *); 1171extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree); 1172 1173/* Not in c-omp.c; provided by the front end. */ 1174extern bool c_omp_sharing_predetermined (tree); 1175extern tree c_omp_remap_decl (tree, bool); 1176extern void record_types_used_by_current_var_decl (tree); 1177 1178/* In order for the format checking to accept the C frontend 1179 diagnostic framework extensions, you must include this file before 1180 toplev.h, not after. The C front end formats are a subset of those 1181 for C++, so they are the appropriate set to use in common code; 1182 cp-tree.h overrides this for C++. */ 1183#ifndef GCC_DIAG_STYLE 1184#define GCC_DIAG_STYLE __gcc_cdiag__ 1185#endif 1186 1187#endif /* ! GCC_C_COMMON_H */ 1188