gcc/c-family/c-common.h

   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, 2010
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along 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 /* In order for the format checking to accept the C frontend
  30    diagnostic framework extensions, you must include this file before
  31    diagnostic-core.h, not after.  The C front end formats are a subset of those
  32    for C++, so they are the appropriate set to use in common code;
  33    cp-tree.h overrides this for C++.  */
  34 #if defined(GCC_DIAGNOSTIC_CORE_H)
  35 #error \
  36 In order for the format checking to accept the C front end diagnostic \
  37 framework extensions, you must include this file before diagnostic-core.h \
  38 never after.
  39 #endif
  40 #ifndef GCC_DIAG_STYLE
  41 #define GCC_DIAG_STYLE __gcc_cdiag__
  42 #endif
  43 #include "diagnostic-core.h"
  44
  45 /* Usage of TREE_LANG_FLAG_?:
  46    0: TREE_NEGATED_INT (in INTEGER_CST).
  47       IDENTIFIER_MARKED (used by search routines).
  48       DECL_PRETTY_FUNCTION_P (in VAR_DECL)
  49       C_MAYBE_CONST_EXPR_INT_OPERANDS (in C_MAYBE_CONST_EXPR, for C)
  50    1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
  51       STATEMENT_LIST_STMT_EXPR (in STATEMENT_LIST)
  52       C_MAYBE_CONST_EXPR_NON_CONST (in C_MAYBE_CONST_EXPR, for C)
  53    2: unused
  54    3: STATEMENT_LIST_HAS_LABEL (in STATEMENT_LIST)
  55    4: unused
  56 */
  57
  58 /* Reserved identifiers.  This is the union of all the keywords for C,
  59    C++, and Objective-C.  All the type modifiers have to be in one
  60    block at the beginning, because they are used as mask bits.  There
  61    are 27 type modifiers; if we add many more we will have to redesign
  62    the mask mechanism.  */
  63
  64 enum rid
  65 {
  66   /* Modifiers: */
  67   /* C, in empirical order of frequency.  */
  68   RID_STATIC = 0,
  69   RID_UNSIGNED, RID_LONG,    RID_CONST, RID_EXTERN,
  70   RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
  71   RID_VOLATILE, RID_SIGNED,  RID_AUTO,  RID_RESTRICT,
  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 */
  80   RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
  81
  82   /* C (reserved and imaginary types not implemented, so any use is a
  83      syntax error) */
  84   RID_IMAGINARY,
  85
  86   /* C */
  87   RID_INT,     RID_CHAR,   RID_FLOAT,    RID_DOUBLE, RID_VOID,
  88   RID_INT128,
  89   RID_ENUM,    RID_STRUCT, RID_UNION,    RID_IF,     RID_ELSE,
  90   RID_WHILE,   RID_DO,     RID_FOR,      RID_SWITCH, RID_CASE,
  91   RID_DEFAULT, RID_BREAK,  RID_CONTINUE, RID_RETURN, RID_GOTO,
  92   RID_SIZEOF,
  93
  94   /* C extensions */
  95   RID_ASM,       RID_TYPEOF,   RID_ALIGNOF,  RID_ATTRIBUTE,  RID_VA_ARG,
  96   RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL,      RID_CHOOSE_EXPR,
  97   RID_TYPES_COMPATIBLE_P,
  98   RID_DFLOAT32, RID_DFLOAT64, RID_DFLOAT128,
  99   RID_FRACT, RID_ACCUM,
 100
 101   /* This means to warn that this is a C++ keyword, and then treat it
 102      as a normal identifier.  */
 103   RID_CXX_COMPAT_WARN,
 104
 105   /* Too many ways of getting the name of a function as a string */
 106   RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
 107
 108   /* C++ */
 109   RID_BOOL,     RID_WCHAR,    RID_CLASS,
 110   RID_PUBLIC,   RID_PRIVATE,  RID_PROTECTED,
 111   RID_TEMPLATE, RID_NULL,     RID_CATCH,
 112   RID_DELETE,   RID_FALSE,    RID_NAMESPACE,
 113   RID_NEW,      RID_OFFSETOF, RID_OPERATOR,
 114   RID_THIS,     RID_THROW,    RID_TRUE,
 115   RID_TRY,      RID_TYPENAME, RID_TYPEID,
 116   RID_USING,    RID_CHAR16,   RID_CHAR32,
 117
 118   /* casts */
 119   RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
 120
 121   /* C++ extensions */
 122   RID_HAS_NOTHROW_ASSIGN,      RID_HAS_NOTHROW_CONSTRUCTOR,
 123   RID_HAS_NOTHROW_COPY,        RID_HAS_TRIVIAL_ASSIGN,
 124   RID_HAS_TRIVIAL_CONSTRUCTOR, RID_HAS_TRIVIAL_COPY,
 125   RID_HAS_TRIVIAL_DESTRUCTOR,  RID_HAS_VIRTUAL_DESTRUCTOR,
 126   RID_IS_ABSTRACT,             RID_IS_BASE_OF,
 127   RID_IS_CONVERTIBLE_TO,       RID_IS_CLASS,
 128   RID_IS_EMPTY,                RID_IS_ENUM,
 129   RID_IS_POD,                  RID_IS_POLYMORPHIC,
 130   RID_IS_STD_LAYOUT,           RID_IS_TRIVIAL,
 131   RID_IS_UNION,
 132
 133   /* C++0x */
 134   RID_CONSTEXPR, RID_DECLTYPE, RID_NOEXCEPT, RID_NULLPTR, RID_STATIC_ASSERT,
 135
 136   /* Objective-C */
 137   RID_AT_ENCODE,   RID_AT_END,
 138   RID_AT_CLASS,    RID_AT_ALIAS,     RID_AT_DEFS,
 139   RID_AT_PRIVATE,  RID_AT_PROTECTED, RID_AT_PUBLIC,
 140   RID_AT_PROTOCOL, RID_AT_SELECTOR,
 141   RID_AT_THROW,    RID_AT_TRY,       RID_AT_CATCH,
 142   RID_AT_FINALLY,  RID_AT_SYNCHRONIZED,
 143   RID_AT_INTERFACE,
 144   RID_AT_IMPLEMENTATION,
 145
 146   /* Named address support, mapping the keyword to a particular named address
 147      number.  Named address space 0 is reserved for the generic address.  If
 148      there are more than 254 named addresses, the addr_space_t type will need
 149      to be grown from an unsigned char to unsigned short.  */
 150   RID_ADDR_SPACE_0,             /* generic address */
 151   RID_ADDR_SPACE_1,
 152   RID_ADDR_SPACE_2,
 153   RID_ADDR_SPACE_3,
 154   RID_ADDR_SPACE_4,
 155   RID_ADDR_SPACE_5,
 156   RID_ADDR_SPACE_6,
 157   RID_ADDR_SPACE_7,
 158   RID_ADDR_SPACE_8,
 159   RID_ADDR_SPACE_9,
 160   RID_ADDR_SPACE_10,
 161   RID_ADDR_SPACE_11,
 162   RID_ADDR_SPACE_12,
 163   RID_ADDR_SPACE_13,
 164   RID_ADDR_SPACE_14,
 165   RID_ADDR_SPACE_15,
 166
 167   RID_FIRST_ADDR_SPACE = RID_ADDR_SPACE_0,
 168   RID_LAST_ADDR_SPACE = RID_ADDR_SPACE_15,
 169
 170   RID_MAX,
 171
 172   RID_FIRST_MODIFIER = RID_STATIC,
 173   RID_LAST_MODIFIER = RID_ONEWAY,
 174
 175   RID_FIRST_CXX0X = RID_CONSTEXPR,
 176   RID_LAST_CXX0X = RID_STATIC_ASSERT,
 177   RID_FIRST_AT = RID_AT_ENCODE,
 178   RID_LAST_AT = RID_AT_IMPLEMENTATION,
 179   RID_FIRST_PQ = RID_IN,
 180   RID_LAST_PQ = RID_ONEWAY
 181 };
 182
 183 #define OBJC_IS_AT_KEYWORD(rid) \
 184   ((unsigned int) (rid) >= (unsigned int) RID_FIRST_AT && \
 185    (unsigned int) (rid) <= (unsigned int) RID_LAST_AT)
 186
 187 #define OBJC_IS_PQ_KEYWORD(rid) \
 188   ((unsigned int) (rid) >= (unsigned int) RID_FIRST_PQ && \
 189    (unsigned int) (rid) <= (unsigned int) RID_LAST_PQ)
 190
 191 /* The elements of `ridpointers' are identifier nodes for the reserved
 192    type names and storage classes.  It is indexed by a RID_... value.  */
 193 extern GTY ((length ("(int) RID_MAX"))) tree *ridpointers;
 194
 195 /* Standard named or nameless data types of the C compiler.  */
 196
 197 enum c_tree_index
 198 {
 199     CTI_CHAR16_TYPE,
 200     CTI_CHAR32_TYPE,
 201     CTI_WCHAR_TYPE,
 202     CTI_UNDERLYING_WCHAR_TYPE,
 203     CTI_WINT_TYPE,
 204     CTI_SIGNED_SIZE_TYPE, /* For format checking only.  */
 205     CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only.  */
 206     CTI_INTMAX_TYPE,
 207     CTI_UINTMAX_TYPE,
 208     CTI_WIDEST_INT_LIT_TYPE,
 209     CTI_WIDEST_UINT_LIT_TYPE,
 210
 211     /* Types for <stdint.h>, that may not be defined on all
 212        targets.  */
 213     CTI_SIG_ATOMIC_TYPE,
 214     CTI_INT8_TYPE,
 215     CTI_INT16_TYPE,
 216     CTI_INT32_TYPE,
 217     CTI_INT64_TYPE,
 218     CTI_UINT8_TYPE,
 219     CTI_UINT16_TYPE,
 220     CTI_UINT32_TYPE,
 221     CTI_UINT64_TYPE,
 222     CTI_INT_LEAST8_TYPE,
 223     CTI_INT_LEAST16_TYPE,
 224     CTI_INT_LEAST32_TYPE,
 225     CTI_INT_LEAST64_TYPE,
 226     CTI_UINT_LEAST8_TYPE,
 227     CTI_UINT_LEAST16_TYPE,
 228     CTI_UINT_LEAST32_TYPE,
 229     CTI_UINT_LEAST64_TYPE,
 230     CTI_INT_FAST8_TYPE,
 231     CTI_INT_FAST16_TYPE,
 232     CTI_INT_FAST32_TYPE,
 233     CTI_INT_FAST64_TYPE,
 234     CTI_UINT_FAST8_TYPE,
 235     CTI_UINT_FAST16_TYPE,
 236     CTI_UINT_FAST32_TYPE,
 237     CTI_UINT_FAST64_TYPE,
 238     CTI_INTPTR_TYPE,
 239     CTI_UINTPTR_TYPE,
 240
 241     CTI_CHAR_ARRAY_TYPE,
 242     CTI_CHAR16_ARRAY_TYPE,
 243     CTI_CHAR32_ARRAY_TYPE,
 244     CTI_WCHAR_ARRAY_TYPE,
 245     CTI_INT_ARRAY_TYPE,
 246     CTI_STRING_TYPE,
 247     CTI_CONST_STRING_TYPE,
 248
 249     /* Type for boolean expressions (bool in C++, int in C).  */
 250     CTI_TRUTHVALUE_TYPE,
 251     CTI_TRUTHVALUE_TRUE,
 252     CTI_TRUTHVALUE_FALSE,
 253
 254     CTI_DEFAULT_FUNCTION_TYPE,
 255
 256     /* These are not types, but we have to look them up all the time.  */
 257     CTI_FUNCTION_NAME_DECL,
 258     CTI_PRETTY_FUNCTION_NAME_DECL,
 259     CTI_C99_FUNCTION_NAME_DECL,
 260     CTI_SAVED_FUNCTION_NAME_DECLS,
 261
 262     CTI_VOID_ZERO,
 263
 264     CTI_NULL,
 265
 266     CTI_MAX
 267 };
 268
 269 #define C_CPP_HASHNODE(id) \
 270   (&(((struct c_common_identifier *) (id))->node))
 271 #define C_RID_CODE(id) \
 272   ((enum rid) (((struct c_common_identifier *) (id))->node.rid_code))
 273 #define C_SET_RID_CODE(id, code) \
 274   (((struct c_common_identifier *) (id))->node.rid_code = (unsigned char) code)
 275
 276 /* Identifier part common to the C front ends.  Inherits from
 277    tree_identifier, despite appearances.  */
 278 struct GTY(()) c_common_identifier {
 279   struct tree_common common;
 280   struct cpp_hashnode node;
 281 };
 282
 283 /* An entry in the reserved keyword table.  */
 284
 285 struct c_common_resword
 286 {
 287   const char *const word;
 288   ENUM_BITFIELD(rid) const rid : 16;
 289   const unsigned int disable   : 16;
 290 };
 291
 292 /* Disable mask.  Keywords are disabled if (reswords[i].disable &
 293    mask) is _true_.  Thus for keywords which are present in all
 294    languages the disable field is zero.  */
 295
 296 #define D_CONLY         0x001   /* C only (not in C++).  */
 297 #define D_CXXONLY       0x002   /* C++ only (not in C).  */
 298 #define D_C99           0x004   /* In C, C99 only.  */
 299 #define D_CXX0X         0x008   /* In C++, C++0X only.  */
 300 #define D_EXT           0x010   /* GCC extension.  */
 301 #define D_EXT89         0x020   /* GCC extension incorporated in C99.  */
 302 #define D_ASM           0x040   /* Disabled by -fno-asm.  */
 303 #define D_OBJC          0x080   /* In Objective C and neither C nor C++.  */
 304 #define D_CXX_OBJC      0x100   /* In Objective C, and C++, but not C.  */
 305 #define D_CXXWARN       0x200   /* In C warn with -Wcxx-compat.  */
 306
 307 /* The reserved keyword table.  */
 308 extern const struct c_common_resword c_common_reswords[];
 309
 310 /* The number of items in the reserved keyword table.  */
 311 extern const unsigned int num_c_common_reswords;
 312
 313 #define char16_type_node                c_global_trees[CTI_CHAR16_TYPE]
 314 #define char32_type_node                c_global_trees[CTI_CHAR32_TYPE]
 315 #define wchar_type_node                 c_global_trees[CTI_WCHAR_TYPE]
 316 #define underlying_wchar_type_node      c_global_trees[CTI_UNDERLYING_WCHAR_TYPE]
 317 #define wint_type_node                  c_global_trees[CTI_WINT_TYPE]
 318 #define signed_size_type_node           c_global_trees[CTI_SIGNED_SIZE_TYPE]
 319 #define unsigned_ptrdiff_type_node      c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
 320 #define intmax_type_node                c_global_trees[CTI_INTMAX_TYPE]
 321 #define uintmax_type_node               c_global_trees[CTI_UINTMAX_TYPE]
 322 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
 323 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
 324
 325 #define sig_atomic_type_node            c_global_trees[CTI_SIG_ATOMIC_TYPE]
 326 #define int8_type_node                  c_global_trees[CTI_INT8_TYPE]
 327 #define int16_type_node                 c_global_trees[CTI_INT16_TYPE]
 328 #define int32_type_node                 c_global_trees[CTI_INT32_TYPE]
 329 #define int64_type_node                 c_global_trees[CTI_INT64_TYPE]
 330 #define uint8_type_node                 c_global_trees[CTI_UINT8_TYPE]
 331 #define uint16_type_node                c_global_trees[CTI_UINT16_TYPE]
 332 #define c_uint32_type_node              c_global_trees[CTI_UINT32_TYPE]
 333 #define c_uint64_type_node              c_global_trees[CTI_UINT64_TYPE]
 334 #define int_least8_type_node            c_global_trees[CTI_INT_LEAST8_TYPE]
 335 #define int_least16_type_node           c_global_trees[CTI_INT_LEAST16_TYPE]
 336 #define int_least32_type_node           c_global_trees[CTI_INT_LEAST32_TYPE]
 337 #define int_least64_type_node           c_global_trees[CTI_INT_LEAST64_TYPE]
 338 #define uint_least8_type_node           c_global_trees[CTI_UINT_LEAST8_TYPE]
 339 #define uint_least16_type_node          c_global_trees[CTI_UINT_LEAST16_TYPE]
 340 #define uint_least32_type_node          c_global_trees[CTI_UINT_LEAST32_TYPE]
 341 #define uint_least64_type_node          c_global_trees[CTI_UINT_LEAST64_TYPE]
 342 #define int_fast8_type_node             c_global_trees[CTI_INT_FAST8_TYPE]
 343 #define int_fast16_type_node            c_global_trees[CTI_INT_FAST16_TYPE]
 344 #define int_fast32_type_node            c_global_trees[CTI_INT_FAST32_TYPE]
 345 #define int_fast64_type_node            c_global_trees[CTI_INT_FAST64_TYPE]
 346 #define uint_fast8_type_node            c_global_trees[CTI_UINT_FAST8_TYPE]
 347 #define uint_fast16_type_node           c_global_trees[CTI_UINT_FAST16_TYPE]
 348 #define uint_fast32_type_node           c_global_trees[CTI_UINT_FAST32_TYPE]
 349 #define uint_fast64_type_node           c_global_trees[CTI_UINT_FAST64_TYPE]
 350 #define intptr_type_node                c_global_trees[CTI_INTPTR_TYPE]
 351 #define uintptr_type_node               c_global_trees[CTI_UINTPTR_TYPE]
 352
 353 #define truthvalue_type_node            c_global_trees[CTI_TRUTHVALUE_TYPE]
 354 #define truthvalue_true_node            c_global_trees[CTI_TRUTHVALUE_TRUE]
 355 #define truthvalue_false_node           c_global_trees[CTI_TRUTHVALUE_FALSE]
 356
 357 #define char_array_type_node            c_global_trees[CTI_CHAR_ARRAY_TYPE]
 358 #define char16_array_type_node          c_global_trees[CTI_CHAR16_ARRAY_TYPE]
 359 #define char32_array_type_node          c_global_trees[CTI_CHAR32_ARRAY_TYPE]
 360 #define wchar_array_type_node           c_global_trees[CTI_WCHAR_ARRAY_TYPE]
 361 #define int_array_type_node             c_global_trees[CTI_INT_ARRAY_TYPE]
 362 #define string_type_node                c_global_trees[CTI_STRING_TYPE]
 363 #define const_string_type_node          c_global_trees[CTI_CONST_STRING_TYPE]
 364
 365 #define default_function_type           c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
 366
 367 #define function_name_decl_node         c_global_trees[CTI_FUNCTION_NAME_DECL]
 368 #define pretty_function_name_decl_node  c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
 369 #define c99_function_name_decl_node             c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
 370 #define saved_function_name_decls       c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
 371
 372 /* A node for `((void) 0)'.  */
 373 #define void_zero_node                  c_global_trees[CTI_VOID_ZERO]
 374
 375 /* The node for C++ `__null'.  */
 376 #define null_node                       c_global_trees[CTI_NULL]
 377
 378 extern GTY(()) tree c_global_trees[CTI_MAX];
 379
 380 /* In a RECORD_TYPE, a sorted array of the fields of the type, not a
 381    tree for size reasons.  */
 382 struct GTY((variable_size)) sorted_fields_type {
 383   int len;
 384   tree GTY((length ("%h.len"))) elts[1];
 385 };
 386
 387 /* Mark which labels are explicitly declared.
 388    These may be shadowed, and may be referenced from nested functions.  */
 389 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
 390
 391 typedef enum c_language_kind
 392 {
 393   clk_c         = 0,            /* C90, C94 or C99 */
 394   clk_objc      = 1,            /* clk_c with ObjC features.  */
 395   clk_cxx       = 2,            /* ANSI/ISO C++ */
 396   clk_objcxx    = 3             /* clk_cxx with ObjC features.  */
 397 }
 398 c_language_kind;
 399
 400 /* To test for a specific language use c_language, defined by each
 401    front end.  For "ObjC features" or "not C++" use the macros.  */
 402 extern c_language_kind c_language;
 403
 404 #define c_dialect_cxx()         ((c_language & clk_cxx) != 0)
 405 #define c_dialect_objc()        ((c_language & clk_objc) != 0)
 406
 407 /* The various name of operator that appears in error messages. */
 408 typedef enum ref_operator {
 409   /* NULL */
 410   RO_NULL,
 411   /* array indexing */
 412   RO_ARRAY_INDEXING,
 413   /* unary * */
 414   RO_UNARY_STAR,
 415   /* -> */
 416   RO_ARROW,
 417   /* implicit conversion */
 418   RO_IMPLICIT_CONVERSION
 419 } ref_operator;
 420
 421 /* Information about a statement tree.  */
 422
 423 struct GTY(()) stmt_tree_s {
 424   /* The current statement list being collected.  */
 425   tree x_cur_stmt_list;
 426
 427   /* In C++, Nonzero if we should treat statements as full
 428      expressions.  In particular, this variable is no-zero if at the
 429      end of a statement we should destroy any temporaries created
 430      during that statement.  Similarly, if, at the end of a block, we
 431      should destroy any local variables in this block.  Normally, this
 432      variable is nonzero, since those are the normal semantics of
 433      C++.
 434
 435      However, in order to represent aggregate initialization code as
 436      tree structure, we use statement-expressions.  The statements
 437      within the statement expression should not result in cleanups
 438      being run until the entire enclosing statement is complete.
 439
 440      This flag has no effect in C.  */
 441   int stmts_are_full_exprs_p;
 442 };
 443
 444 typedef struct stmt_tree_s *stmt_tree;
 445
 446 /* Global state pertinent to the current function.  Some C dialects
 447    extend this structure with additional fields.  */
 448
 449 struct GTY(()) c_language_function {
 450   /* While we are parsing the function, this contains information
 451      about the statement-tree that we are building.  */
 452   struct stmt_tree_s x_stmt_tree;
 453 };
 454
 455 /* When building a statement-tree, this is the current statement list
 456    being collected.  It's TREE_CHAIN is a back-pointer to the previous
 457    statement list.  */
 458
 459 #define cur_stmt_list (current_stmt_tree ()->x_cur_stmt_list)
 460
 461 /* Language-specific hooks.  */
 462
 463 /* If non-NULL, this function is called after a precompile header file
 464    is loaded.  */
 465 extern void (*lang_post_pch_load) (void);
 466
 467 extern void push_file_scope (void);
 468 extern void pop_file_scope (void);
 469 extern stmt_tree current_stmt_tree (void);
 470 extern tree push_stmt_list (void);
 471 extern tree pop_stmt_list (tree);
 472 extern tree add_stmt (tree);
 473 extern void push_cleanup (tree, tree, bool);
 474 extern tree pushdecl_top_level (tree);
 475 extern tree pushdecl (tree);
 476 extern tree build_modify_expr (location_t, tree, tree, enum tree_code,
 477                                location_t, tree, tree);
 478 extern tree build_indirect_ref (location_t, tree, ref_operator);
 479
 480 extern int c_expand_decl (tree);
 481
 482 extern int field_decl_cmp (const void *, const void *);
 483 extern void resort_sorted_fields (void *, void *, gt_pointer_operator,
 484                                   void *);
 485 extern bool has_c_linkage (const_tree decl);
 486 \f
 487 /* Switches common to the C front ends.  */
 488
 489 /* Nonzero means don't output line number information.  */
 490
 491 extern char flag_no_line_commands;
 492
 493 /* Nonzero causes -E output not to be done, but directives such as
 494    #define that have side effects are still obeyed.  */
 495
 496 extern char flag_no_output;
 497
 498 /* Nonzero means dump macros in some fashion; contains the 'D', 'M',
 499    'N' or 'U' of the command line switch.  */
 500
 501 extern char flag_dump_macros;
 502
 503 /* Nonzero means pass #include lines through to the output.  */
 504
 505 extern char flag_dump_includes;
 506
 507 /* Nonzero means process PCH files while preprocessing.  */
 508
 509 extern bool flag_pch_preprocess;
 510
 511 /* The file name to which we should write a precompiled header, or
 512    NULL if no header will be written in this compile.  */
 513
 514 extern const char *pch_file;
 515
 516 /* Nonzero if an ISO standard was selected.  It rejects macros in the
 517    user's namespace.  */
 518
 519 extern int flag_iso;
 520
 521 /* Warn about #pragma directives that are not recognized.  */
 522
 523 extern int warn_unknown_pragmas; /* Tri state variable.  */
 524
 525 /* Warn about format/argument anomalies in calls to formatted I/O functions
 526    (*printf, *scanf, strftime, strfmon, etc.).  */
 527
 528 extern int warn_format;
 529
 530
 531 /* C/ObjC language option variables.  */
 532
 533
 534 /* Nonzero means allow type mismatches in conditional expressions;
 535    just make their values `void'.  */
 536
 537 extern int flag_cond_mismatch;
 538
 539 /* Nonzero means enable C89 Amendment 1 features.  */
 540
 541 extern int flag_isoc94;
 542
 543 /* Nonzero means use the ISO C99 (or C1X) dialect of C.  */
 544
 545 extern int flag_isoc99;
 546
 547 /* Nonzero means use the ISO C1X dialect of C.  */
 548
 549 extern int flag_isoc1x;
 550
 551 /* Nonzero means that we have builtin functions, and main is an int.  */
 552
 553 extern int flag_hosted;
 554
 555 /* ObjC language option variables.  */
 556
 557
 558 /* Tells the compiler that this is a special run.  Do not perform any
 559    compiling, instead we are to test some platform dependent features
 560    and output a C header file with appropriate definitions.  */
 561
 562 extern int print_struct_values;
 563
 564 /* ???.  Undocumented.  */
 565
 566 extern const char *constant_string_class_name;
 567
 568
 569 /* C++ language option variables.  */
 570
 571
 572 /* Nonzero means generate separate instantiation control files and
 573    juggle them at link time.  */
 574
 575 extern int flag_use_repository;
 576
 577 /* The supported C++ dialects.  */
 578
 579 enum cxx_dialect {
 580   /* C++98  */
 581   cxx98,
 582   /* Experimental features that are likely to become part of
 583      C++0x.  */
 584   cxx0x
 585 };
 586
 587 /* The C++ dialect being used. C++98 is the default.  */
 588 extern enum cxx_dialect cxx_dialect;
 589
 590 /* Maximum template instantiation depth.  This limit is rather
 591    arbitrary, but it exists to limit the time it takes to notice
 592    infinite template instantiations.  */
 593
 594 extern int max_tinst_depth;
 595
 596 /* Nonzero means that we should not issue warnings about problems that
 597    occur when the code is executed, because the code being processed
 598    is not expected to be executed.  This is set during parsing.  This
 599    is used for cases like sizeof() and "0 ? a : b".  This is a count,
 600    not a bool, because unexecuted expressions can nest.  */
 601
 602 extern int c_inhibit_evaluation_warnings;
 603
 604 /* Whether lexing has been completed, so subsequent preprocessor
 605    errors should use the compiler's input_location.  */
 606
 607 extern bool done_lexing;
 608
 609 /* C types are partitioned into three subsets: object, function, and
 610    incomplete types.  */
 611 #define C_TYPE_OBJECT_P(type) \
 612   (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
 613
 614 #define C_TYPE_INCOMPLETE_P(type) \
 615   (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
 616
 617 #define C_TYPE_FUNCTION_P(type) \
 618   (TREE_CODE (type) == FUNCTION_TYPE)
 619
 620 /* For convenience we define a single macro to identify the class of
 621    object or incomplete types.  */
 622 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
 623   (!C_TYPE_FUNCTION_P (type))
 624
 625 /* Attribute table common to the C front ends.  */
 626 extern const struct attribute_spec c_common_attribute_table[];
 627 extern const struct attribute_spec c_common_format_attribute_table[];
 628
 629 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
 630    ID is the identifier to use, NAME is the string.
 631    TYPE_DEP indicates whether it depends on type of the function or not
 632    (i.e. __PRETTY_FUNCTION__).  */
 633
 634 extern tree (*make_fname_decl) (location_t, tree, int);
 635
 636 /* In c-decl.c and cp/tree.c.  FIXME.  */
 637 extern void c_register_addr_space (const char *str, addr_space_t as);
 638
 639 /* In c-common.c.  */
 640 extern const char *c_addr_space_name (addr_space_t as);
 641 extern tree identifier_global_value (tree);
 642 extern void record_builtin_type (enum rid, const char *, tree);
 643 extern tree build_void_list_node (void);
 644 extern void start_fname_decls (void);
 645 extern void finish_fname_decls (void);
 646 extern const char *fname_as_string (int);
 647 extern tree fname_decl (location_t, unsigned, tree);
 648
 649 extern void check_function_arguments (tree, int, tree *, tree);
 650 extern void check_function_arguments_recurse (void (*)
 651                                               (void *, tree,
 652                                                unsigned HOST_WIDE_INT),
 653                                               void *, tree,
 654                                               unsigned HOST_WIDE_INT);
 655 extern bool check_builtin_function_arguments (tree, int, tree *);
 656 extern void check_function_format (tree, int, tree *);
 657 extern void set_Wformat (int);
 658 extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
 659 extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
 660 extern bool attribute_takes_identifier_p (const_tree);
 661 extern int c_common_handle_option (size_t code, const char *arg, int value, int kind);
 662 extern tree c_common_type_for_mode (enum machine_mode, int);
 663 extern tree c_common_type_for_size (unsigned int, int);
 664 extern tree c_common_fixed_point_type_for_size (unsigned int, unsigned int,
 665                                                 int, int);
 666 extern tree c_common_unsigned_type (tree);
 667 extern tree c_common_signed_type (tree);
 668 extern tree c_common_signed_or_unsigned_type (int, tree);
 669 extern tree c_build_bitfield_integer_type (unsigned HOST_WIDE_INT, int);
 670 extern bool decl_with_nonnull_addr_p (const_tree);
 671 extern tree c_fully_fold (tree, bool, bool *);
 672 extern tree decl_constant_value_for_optimization (tree);
 673 extern tree c_wrap_maybe_const (tree, bool);
 674 extern tree c_save_expr (tree);
 675 extern tree c_common_truthvalue_conversion (location_t, tree);
 676 extern void c_apply_type_quals_to_decl (int, tree);
 677 extern tree c_sizeof_or_alignof_type (location_t, tree, bool, int);
 678 extern tree c_alignof_expr (location_t, tree);
 679 /* Print an error message for invalid operands to arith operation CODE.
 680    NOP_EXPR is used as a special case (see truthvalue_conversion).  */
 681 extern void binary_op_error (location_t, enum tree_code, tree, tree);
 682 extern tree fix_string_type (tree);
 683 extern void constant_expression_warning (tree);
 684 extern void constant_expression_error (tree);
 685 extern bool strict_aliasing_warning (tree, tree, tree);
 686 extern void warnings_for_convert_and_check (tree, tree, tree);
 687 extern tree convert_and_check (tree, tree);
 688 extern void overflow_warning (location_t, tree);
 689 extern void warn_logical_operator (location_t, enum tree_code, tree,
 690                                    enum tree_code, tree, enum tree_code, tree);
 691 extern void check_main_parameter_types (tree decl);
 692 extern bool c_determine_visibility (tree);
 693 extern bool same_scalar_type_ignoring_signedness (tree, tree);
 694 extern void mark_valid_location_for_stdc_pragma (bool);
 695 extern bool valid_location_for_stdc_pragma_p (void);
 696 extern void set_float_const_decimal64 (void);
 697 extern void clear_float_const_decimal64 (void);
 698 extern bool float_const_decimal64_p (void);
 699
 700 #define c_sizeof(LOC, T)  c_sizeof_or_alignof_type (LOC, T, true, 1)
 701 #define c_alignof(LOC, T) c_sizeof_or_alignof_type (LOC, T, false, 1)
 702
 703 /* Subroutine of build_binary_op, used for certain operations.  */
 704 extern tree shorten_binary_op (tree result_type, tree op0, tree op1, bool bitwise);
 705
 706 /* Subroutine of build_binary_op, used for comparison operations.
 707    See if the operands have both been converted from subword integer types
 708    and, if so, perhaps change them both back to their original type.  */
 709 extern tree shorten_compare (tree *, tree *, tree *, enum tree_code *);
 710
 711 extern tree pointer_int_sum (location_t, enum tree_code, tree, tree);
 712
 713 /* Add qualifiers to a type, in the fashion for C.  */
 714 extern tree c_build_qualified_type (tree, int);
 715
 716 /* Build tree nodes and builtin functions common to both C and C++ language
 717    frontends.  */
 718 extern void c_common_nodes_and_builtins (void);
 719
 720 extern void disable_builtin_function (const char *);
 721
 722 extern void set_compound_literal_name (tree decl);
 723
 724 extern tree build_va_arg (location_t, tree, tree);
 725
 726 struct diagnostic_context;
 727
 728 extern unsigned int c_common_option_lang_mask (void);
 729 extern void c_common_initialize_diagnostics (struct diagnostic_context *);
 730 extern bool c_common_complain_wrong_lang_p (const struct cl_option *);
 731 extern void c_common_init_options (unsigned int, struct cl_decoded_option *);
 732 extern bool c_common_post_options (const char **);
 733 extern bool c_common_init (void);
 734 extern void c_common_finish (void);
 735 extern void c_common_parse_file (int);
 736 extern alias_set_type c_common_get_alias_set (tree);
 737 extern void c_register_builtin_type (tree, const char*);
 738 extern bool c_promoting_integer_type_p (const_tree);
 739 extern int self_promoting_args_p (const_tree);
 740 extern tree strip_pointer_operator (tree);
 741 extern tree strip_pointer_or_array_types (tree);
 742 extern HOST_WIDE_INT c_common_to_target_charset (HOST_WIDE_INT);
 743
 744 /* This is the basic parsing function.  */
 745 extern void c_parse_file (void);
 746 /* This is misnamed, it actually performs end-of-compilation processing.  */
 747 extern void finish_file (void);
 748
 749 extern void warn_for_omitted_condop (location_t, tree);
 750
 751 /* These macros provide convenient access to the various _STMT nodes.  */
 752
 753 /* Nonzero if a given STATEMENT_LIST represents the outermost binding
 754    if a statement expression.  */
 755 #define STATEMENT_LIST_STMT_EXPR(NODE) \
 756   TREE_LANG_FLAG_1 (STATEMENT_LIST_CHECK (NODE))
 757
 758 /* Nonzero if a label has been added to the statement list.  */
 759 #define STATEMENT_LIST_HAS_LABEL(NODE) \
 760   TREE_LANG_FLAG_3 (STATEMENT_LIST_CHECK (NODE))
 761
 762 /* C_MAYBE_CONST_EXPR accessors.  */
 763 #define C_MAYBE_CONST_EXPR_PRE(NODE)                    \
 764   TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 0)
 765 #define C_MAYBE_CONST_EXPR_EXPR(NODE)                   \
 766   TREE_OPERAND (C_MAYBE_CONST_EXPR_CHECK (NODE), 1)
 767 #define C_MAYBE_CONST_EXPR_INT_OPERANDS(NODE)           \
 768   TREE_LANG_FLAG_0 (C_MAYBE_CONST_EXPR_CHECK (NODE))
 769 #define C_MAYBE_CONST_EXPR_NON_CONST(NODE)              \
 770   TREE_LANG_FLAG_1 (C_MAYBE_CONST_EXPR_CHECK (NODE))
 771 #define EXPR_INT_CONST_OPERANDS(EXPR)                   \
 772   (INTEGRAL_TYPE_P (TREE_TYPE (EXPR))                   \
 773    && (TREE_CODE (EXPR) == INTEGER_CST                  \
 774        || (TREE_CODE (EXPR) == C_MAYBE_CONST_EXPR       \
 775            && C_MAYBE_CONST_EXPR_INT_OPERANDS (EXPR))))
 776
 777 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield.  */
 778 #define DECL_C_BIT_FIELD(NODE) \
 779   (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
 780 #define SET_DECL_C_BIT_FIELD(NODE) \
 781   (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
 782 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
 783   (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
 784
 785 extern tree do_case (location_t, tree, tree);
 786 extern tree build_stmt (location_t, enum tree_code, ...);
 787 extern tree build_case_label (location_t, tree, tree, tree);
 788
 789 /* These functions must be defined by each front-end which implements
 790    a variant of the C language.  They are used in c-common.c.  */
 791
 792 extern tree build_unary_op (location_t, enum tree_code, tree, int);
 793 extern tree build_binary_op (location_t, enum tree_code, tree, tree, int);
 794 extern tree perform_integral_promotions (tree);
 795
 796 /* These functions must be defined by each front-end which implements
 797    a variant of the C language.  They are used by port files.  */
 798
 799 extern tree default_conversion (tree);
 800
 801 /* Given two integer or real types, return the type for their sum.
 802    Given two compatible ANSI C types, returns the merged type.  */
 803
 804 extern tree common_type (tree, tree);
 805
 806 extern tree decl_constant_value (tree);
 807
 808 /* Handle increment and decrement of boolean types.  */
 809 extern tree boolean_increment (enum tree_code, tree);
 810
 811 extern int case_compare (splay_tree_key, splay_tree_key);
 812
 813 extern tree c_add_case_label (location_t, splay_tree, tree, tree, tree, tree);
 814
 815 extern void c_do_switch_warnings (splay_tree, location_t, tree, tree);
 816
 817 extern tree build_function_call (location_t, tree, tree);
 818
 819 extern tree build_function_call_vec (location_t, tree,
 820                                      VEC(tree,gc) *, VEC(tree,gc) *);
 821
 822 extern tree resolve_overloaded_builtin (location_t, tree, VEC(tree,gc) *);
 823
 824 extern tree finish_label_address_expr (tree, location_t);
 825
 826 /* Same function prototype, but the C and C++ front ends have
 827    different implementations.  Used in c-common.c.  */
 828 extern tree lookup_label (tree);
 829 extern tree lookup_name (tree);
 830 extern bool lvalue_p (const_tree);
 831
 832 extern bool vector_targets_convertible_p (const_tree t1, const_tree t2);
 833 extern bool vector_types_convertible_p (const_tree t1, const_tree t2, bool emit_lax_note);
 834
 835 extern rtx c_expand_expr (tree, rtx, enum machine_mode, int, rtx *);
 836
 837 extern void init_c_lex (void);
 838
 839 extern void c_cpp_builtins (cpp_reader *);
 840 extern void c_cpp_builtins_optimize_pragma (cpp_reader *, tree, tree);
 841 extern bool c_cpp_error (cpp_reader *, int, int, location_t, unsigned int,
 842                          const char *, va_list *)
 843      ATTRIBUTE_GCC_DIAG(6,0);
 844
 845 /* Positive if an implicit `extern "C"' scope has just been entered;
 846    negative if such a scope has just been exited.  */
 847 extern GTY(()) int pending_lang_change;
 848
 849 /* Information recorded about each file examined during compilation.  */
 850
 851 struct c_fileinfo
 852 {
 853   int time;     /* Time spent in the file.  */
 854
 855   /* Flags used only by C++.
 856      INTERFACE_ONLY nonzero means that we are in an "interface" section
 857      of the compiler.  INTERFACE_UNKNOWN nonzero means we cannot trust
 858      the value of INTERFACE_ONLY.  If INTERFACE_UNKNOWN is zero and
 859      INTERFACE_ONLY is zero, it means that we are responsible for
 860      exporting definitions that others might need.  */
 861   short interface_only;
 862   short interface_unknown;
 863 };
 864
 865 struct c_fileinfo *get_fileinfo (const char *);
 866 extern void dump_time_statistics (void);
 867
 868 extern bool c_dump_tree (void *, tree);
 869
 870 extern void verify_sequence_points (tree);
 871
 872 extern tree fold_offsetof (tree, tree);
 873
 874 /* Places where an lvalue, or modifiable lvalue, may be required.
 875    Used to select diagnostic messages in lvalue_error and
 876    readonly_error.  */
 877 enum lvalue_use {
 878   lv_assign,
 879   lv_increment,
 880   lv_decrement,
 881   lv_addressof,
 882   lv_asm
 883 };
 884
 885 extern void lvalue_error (enum lvalue_use);
 886
 887 extern int complete_array_type (tree *, tree, bool);
 888
 889 extern tree builtin_type_for_size (int, bool);
 890
 891 extern void warn_array_subscript_with_type_char (tree);
 892 extern void warn_about_parentheses (enum tree_code,
 893                                     enum tree_code, tree,
 894                                     enum tree_code, tree);
 895 extern void warn_for_unused_label (tree label);
 896 extern void warn_for_div_by_zero (location_t, tree divisor);
 897 extern void warn_for_sign_compare (location_t,
 898                                    tree orig_op0, tree orig_op1,
 899                                    tree op0, tree op1,
 900                                    tree result_type,
 901                                    enum tree_code resultcode);
 902 extern void set_underlying_type (tree x);
 903 extern VEC(tree,gc) *make_tree_vector (void);
 904 extern void release_tree_vector (VEC(tree,gc) *);
 905 extern VEC(tree,gc) *make_tree_vector_single (tree);
 906 extern VEC(tree,gc) *make_tree_vector_copy (const VEC(tree,gc) *);
 907
 908 /* In c-gimplify.c  */
 909 extern void c_genericize (tree);
 910 extern int c_gimplify_expr (tree *, gimple_seq *, gimple_seq *);
 911 extern tree c_build_bind_expr (location_t, tree, tree);
 912
 913 /* In c-pch.c  */
 914 extern void pch_init (void);
 915 extern int c_common_valid_pch (cpp_reader *pfile, const char *name, int fd);
 916 extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
 917                                const char *orig);
 918 extern void c_common_write_pch (void);
 919 extern void c_common_no_more_pch (void);
 920 extern void c_common_pch_pragma (cpp_reader *pfile, const char *);
 921 extern void c_common_print_pch_checksum (FILE *f);
 922
 923 /* In *-checksum.c */
 924 extern const unsigned char executable_checksum[16];
 925
 926 /* In c-cppbuiltin.c  */
 927 extern void builtin_define_std (const char *macro);
 928 extern void builtin_define_with_value (const char *, const char *, int);
 929 extern void c_stddef_cpp_builtins (void);
 930 extern void fe_file_change (const struct line_map *);
 931 extern void c_parse_error (const char *, enum cpp_ttype, tree, unsigned char);
 932
 933 /* Objective-C / Objective-C++ entry points.  */
 934
 935 /* The following ObjC/ObjC++ functions are called by the C and/or C++
 936    front-ends; they all must have corresponding stubs in stub-objc.c.  */
 937 extern tree objc_is_class_name (tree);
 938 extern tree objc_is_object_ptr (tree);
 939 extern void objc_check_decl (tree);
 940 extern int objc_is_reserved_word (tree);
 941 extern bool objc_compare_types (tree, tree, int, tree);
 942 extern void objc_volatilize_decl (tree);
 943 extern bool objc_type_quals_match (tree, tree);
 944 extern tree objc_rewrite_function_call (tree, tree);
 945 extern tree objc_message_selector (void);
 946 extern tree objc_lookup_ivar (tree, tree);
 947 extern void objc_clear_super_receiver (void);
 948 extern int objc_is_public (tree, tree);
 949 extern tree objc_is_id (tree);
 950 extern void objc_declare_alias (tree, tree);
 951 extern void objc_declare_class (tree);
 952 extern void objc_declare_protocols (tree);
 953 extern tree objc_build_message_expr (tree);
 954 extern tree objc_finish_message_expr (tree, tree, tree);
 955 extern tree objc_build_selector_expr (location_t, tree);
 956 extern tree objc_build_protocol_expr (tree);
 957 extern tree objc_build_encode_expr (tree);
 958 extern tree objc_build_string_object (tree);
 959 extern tree objc_get_protocol_qualified_type (tree, tree);
 960 extern tree objc_get_class_reference (tree);
 961 extern tree objc_get_class_ivars (tree);
 962 extern void objc_start_class_interface (tree, tree, tree);
 963 extern void objc_start_category_interface (tree, tree, tree);
 964 extern void objc_start_protocol (tree, tree);
 965 extern void objc_continue_interface (void);
 966 extern void objc_finish_interface (void);
 967 extern void objc_start_class_implementation (tree, tree);
 968 extern void objc_start_category_implementation (tree, tree);
 969 extern void objc_continue_implementation (void);
 970 extern void objc_finish_implementation (void);
 971 extern void objc_set_visibility (int);
 972 extern void objc_set_method_type (enum tree_code);
 973 extern tree objc_build_method_signature (tree, tree, tree, bool);
 974 extern void objc_add_method_declaration (tree);
 975 extern void objc_start_method_definition (tree);
 976 extern void objc_finish_method_definition (tree);
 977 extern void objc_add_instance_variable (tree);
 978 extern tree objc_build_keyword_decl (tree, tree, tree);
 979 extern tree objc_build_throw_stmt (location_t, tree);
 980 extern void objc_begin_try_stmt (location_t, tree);
 981 extern tree objc_finish_try_stmt (void);
 982 extern void objc_begin_catch_clause (tree);
 983 extern void objc_finish_catch_clause (void);
 984 extern void objc_build_finally_clause (location_t, tree);
 985 extern tree objc_build_synchronized (location_t, tree, tree);
 986 extern int objc_static_init_needed_p (void);
 987 extern tree objc_generate_static_init_call (tree);
 988 extern tree objc_generate_write_barrier (tree, enum tree_code, tree);
 989
 990 /* The following are provided by the C and C++ front-ends, and called by
 991    ObjC/ObjC++.  */
 992 extern void *objc_get_current_scope (void);
 993 extern void objc_mark_locals_volatile (void *);
 994
 995 /* In c-ppoutput.c  */
 996 extern void init_pp_output (FILE *);
 997 extern void preprocess_file (cpp_reader *);
 998 extern void pp_file_change (const struct line_map *);
 999 extern void pp_dir_change (cpp_reader *, const char *);
1000 extern bool check_missing_format_attribute (tree, tree);
1001
1002 /* In c-omp.c  */
1003 extern tree c_finish_omp_master (location_t, tree);
1004 extern tree c_finish_omp_critical (location_t, tree, tree);
1005 extern tree c_finish_omp_ordered (location_t, tree);
1006 extern void c_finish_omp_barrier (location_t);
1007 extern tree c_finish_omp_atomic (location_t, enum tree_code, tree, tree);
1008 extern void c_finish_omp_flush (location_t);
1009 extern void c_finish_omp_taskwait (location_t);
1010 extern tree c_finish_omp_for (location_t, tree, tree, tree, tree, tree, tree);
1011 extern void c_split_parallel_clauses (location_t, tree, tree *, tree *);
1012 extern enum omp_clause_default_kind c_omp_predetermined_sharing (tree);
1013
1014 /* Not in c-omp.c; provided by the front end.  */
1015 extern bool c_omp_sharing_predetermined (tree);
1016 extern tree c_omp_remap_decl (tree, bool);
1017 extern void record_types_used_by_current_var_decl (tree);
1018
1019 #endif /* ! GCC_C_COMMON_H */