1 /* Definitions for c-common.c. 2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, 3 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 2, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 #ifndef GCC_C_COMMON_H 23 #define GCC_C_COMMON_H 24 25 #include "splay-tree.h" 26 #include "cpplib.h" 27 28 /* Usage of TREE_LANG_FLAG_?: 29 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT). 30 TREE_NEGATED_INT (in INTEGER_CST). 31 IDENTIFIER_MARKED (used by search routines). 32 SCOPE_BEGIN_P (in SCOPE_STMT) 33 DECL_PRETTY_FUNCTION_P (in VAR_DECL) 34 NEW_FOR_SCOPE_P (in FOR_STMT) 35 ASM_INPUT_P (in ASM_STMT) 36 STMT_EXPR_NO_SCOPE (in STMT_EXPR) 37 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL) 38 STMT_IS_FULL_EXPR_P (in _STMT) 39 2: STMT_LINENO_FOR_FN_P (in _STMT) 40 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT) 41 COMPOUND_STMT_BODY_BLOCK (in COMPOUND_STMT) 42 4: SCOPE_PARTIAL_P (in SCOPE_STMT) 43 */ 44 45 /* Reserved identifiers. This is the union of all the keywords for C, 46 C++, and Objective-C. All the type modifiers have to be in one 47 block at the beginning, because they are used as mask bits. There 48 are 27 type modifiers; if we add many more we will have to redesign 49 the mask mechanism. */ 50 51 enum rid 52 { 53 /* Modifiers: */ 54 /* C, in empirical order of frequency. */ 55 RID_STATIC = 0, 56 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN, 57 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE, 58 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT, 59 60 /* C extensions */ 61 RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX, RID_THREAD, 62 63 /* C++ */ 64 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE, 65 66 /* ObjC */ 67 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY, 68 69 /* C */ 70 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID, 71 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE, 72 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE, 73 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO, 74 RID_SIZEOF, 75 76 /* C extensions */ 77 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG, 78 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE, 79 RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P, 80 81 /* Too many ways of getting the name of a function as a string */ 82 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME, 83 84 /* C++ */ 85 RID_BOOL, RID_WCHAR, RID_CLASS, 86 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED, 87 RID_TEMPLATE, RID_NULL, RID_CATCH, 88 RID_DELETE, RID_FALSE, RID_NAMESPACE, 89 RID_NEW, RID_OPERATOR, RID_THIS, 90 RID_THROW, RID_TRUE, RID_TRY, 91 RID_TYPENAME, RID_TYPEID, RID_USING, 92 93 /* casts */ 94 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST, 95 96 /* Objective-C */ 97 RID_ID, RID_AT_ENCODE, RID_AT_END, 98 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS, 99 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC, 100 RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE, 101 RID_AT_IMPLEMENTATION, 102 103 RID_MAX, 104 105 RID_FIRST_MODIFIER = RID_STATIC, 106 RID_LAST_MODIFIER = RID_ONEWAY, 107 108 RID_FIRST_AT = RID_AT_ENCODE, 109 RID_LAST_AT = RID_AT_IMPLEMENTATION, 110 RID_FIRST_PQ = RID_IN, 111 RID_LAST_PQ = RID_ONEWAY 112 }; 113 114 #define OBJC_IS_AT_KEYWORD(rid) \ 115 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \ 116 (unsigned int)(rid) <= (unsigned int)RID_LAST_AT) 117 118 #define OBJC_IS_PQ_KEYWORD(rid) \ 119 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \ 120 (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ) 121 122 /* The elements of `ridpointers' are identifier nodes for the reserved 123 type names and storage classes. It is indexed by a RID_... value. */ 124 extern tree *ridpointers; 125 126 /* Standard named or nameless data types of the C compiler. */ 127 128 enum c_tree_index 129 { 130 CTI_WCHAR_TYPE, 131 CTI_SIGNED_WCHAR_TYPE, 132 CTI_UNSIGNED_WCHAR_TYPE, 133 CTI_WINT_TYPE, 134 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */ 135 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */ 136 CTI_INTMAX_TYPE, 137 CTI_UINTMAX_TYPE, 138 CTI_WIDEST_INT_LIT_TYPE, 139 CTI_WIDEST_UINT_LIT_TYPE, 140 141 CTI_CHAR_ARRAY_TYPE, 142 CTI_WCHAR_ARRAY_TYPE, 143 CTI_INT_ARRAY_TYPE, 144 CTI_STRING_TYPE, 145 CTI_CONST_STRING_TYPE, 146 147 /* Type for boolean expressions (bool in C++, int in C). */ 148 CTI_BOOLEAN_TYPE, 149 CTI_BOOLEAN_TRUE, 150 CTI_BOOLEAN_FALSE, 151 /* C99's _Bool type. */ 152 CTI_C_BOOL_TYPE, 153 CTI_C_BOOL_TRUE, 154 CTI_C_BOOL_FALSE, 155 CTI_DEFAULT_FUNCTION_TYPE, 156 157 CTI_G77_INTEGER_TYPE, 158 CTI_G77_UINTEGER_TYPE, 159 CTI_G77_LONGINT_TYPE, 160 CTI_G77_ULONGINT_TYPE, 161 162 /* These are not types, but we have to look them up all the time. */ 163 CTI_FUNCTION_NAME_DECL, 164 CTI_PRETTY_FUNCTION_NAME_DECL, 165 CTI_C99_FUNCTION_NAME_DECL, 166 CTI_SAVED_FUNCTION_NAME_DECLS, 167 168 CTI_VOID_ZERO, 169 170 CTI_MAX 171 }; 172 173 #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code) 174 175 /* Identifier part common to the C front ends. Inherits from 176 tree_identifier, despite appearances. */ 177 struct c_common_identifier GTY(()) 178 { 179 struct tree_common common; 180 struct cpp_hashnode GTY ((skip (""))) node; 181 }; 182 183 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE] 184 #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE] 185 #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE] 186 #define wint_type_node c_global_trees[CTI_WINT_TYPE] 187 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE] 188 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE] 189 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE] 190 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE] 191 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE] 192 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE] 193 194 #define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE] 195 #define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE] 196 #define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE] 197 198 #define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE] 199 #define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE] 200 #define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE] 201 202 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE] 203 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE] 204 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE] 205 #define string_type_node c_global_trees[CTI_STRING_TYPE] 206 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE] 207 208 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE] 209 210 /* g77 integer types, which which must be kept in sync with f/com.h */ 211 #define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE] 212 #define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE] 213 #define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE] 214 #define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE] 215 216 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL] 217 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL] 218 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL] 219 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS] 220 221 /* A node for `((void) 0)'. */ 222 #define void_zero_node c_global_trees[CTI_VOID_ZERO] 223 224 extern GTY(()) tree c_global_trees[CTI_MAX]; 225 226 /* Mark which labels are explicitly declared. 227 These may be shadowed, and may be referenced from nested functions. */ 228 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label) 229 230 /* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a 231 warning if they undergo concatenation. */ 232 #define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE) 233 234 typedef enum c_language_kind 235 { 236 clk_c = 0, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, etc. */ 237 clk_cplusplus /* ANSI/ISO C++ */ 238 } 239 c_language_kind; 240 241 /* Information about a statement tree. */ 242 243 struct stmt_tree_s GTY(()) { 244 /* The last statement added to the tree. */ 245 tree x_last_stmt; 246 /* The type of the last expression statement. (This information is 247 needed to implement the statement-expression extension.) */ 248 tree x_last_expr_type; 249 /* The last filename we recorded. */ 250 const char *x_last_expr_filename; 251 /* In C++, Nonzero if we should treat statements as full 252 expressions. In particular, this variable is no-zero if at the 253 end of a statement we should destroy any temporaries created 254 during that statement. Similarly, if, at the end of a block, we 255 should destroy any local variables in this block. Normally, this 256 variable is nonzero, since those are the normal semantics of 257 C++. 258 259 However, in order to represent aggregate initialization code as 260 tree structure, we use statement-expressions. The statements 261 within the statement expression should not result in cleanups 262 being run until the entire enclosing statement is complete. 263 264 This flag has no effect in C. */ 265 int stmts_are_full_exprs_p; 266 }; 267 268 typedef struct stmt_tree_s *stmt_tree; 269 270 /* Global state pertinent to the current function. Some C dialects 271 extend this structure with additional fields. */ 272 273 struct c_language_function GTY(()) { 274 /* While we are parsing the function, this contains information 275 about the statement-tree that we are building. */ 276 struct stmt_tree_s x_stmt_tree; 277 /* The stack of SCOPE_STMTs for the current function. */ 278 tree x_scope_stmt_stack; 279 }; 280 281 /* When building a statement-tree, this is the last statement added to 282 the tree. */ 283 284 #define last_tree (current_stmt_tree ()->x_last_stmt) 285 286 /* The type of the last expression-statement we have seen. */ 287 288 #define last_expr_type (current_stmt_tree ()->x_last_expr_type) 289 290 /* The name of the last file we have seen. */ 291 292 #define last_expr_filename (current_stmt_tree ()->x_last_expr_filename) 293 294 /* LAST_TREE contains the last statement parsed. These are chained 295 together through the TREE_CHAIN field, but often need to be 296 re-organized since the parse is performed bottom-up. This macro 297 makes LAST_TREE the indicated SUBSTMT of STMT. */ 298 299 #define RECHAIN_STMTS(stmt, substmt) \ 300 do { \ 301 substmt = TREE_CHAIN (stmt); \ 302 TREE_CHAIN (stmt) = NULL_TREE; \ 303 last_tree = stmt; \ 304 } while (0) 305 306 /* Language-specific hooks. */ 307 308 extern int (*lang_statement_code_p) PARAMS ((enum tree_code)); 309 extern void (*lang_expand_stmt) PARAMS ((tree)); 310 extern void (*lang_expand_decl_stmt) PARAMS ((tree)); 311 extern void (*lang_expand_function_end) PARAMS ((void)); 312 extern tree gettags PARAMS ((void)); 313 314 /* Callback that determines if it's ok for a function to have no 315 noreturn attribute. */ 316 extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree)); 317 318 extern int yyparse PARAMS ((void)); 319 extern void free_parser_stacks PARAMS ((void)); 320 321 extern stmt_tree current_stmt_tree PARAMS ((void)); 322 extern tree *current_scope_stmt_stack PARAMS ((void)); 323 extern void begin_stmt_tree PARAMS ((tree *)); 324 extern tree add_stmt PARAMS ((tree)); 325 extern void add_decl_stmt PARAMS ((tree)); 326 extern tree add_scope_stmt PARAMS ((int, int)); 327 extern void finish_stmt_tree PARAMS ((tree *)); 328 329 extern int statement_code_p PARAMS ((enum tree_code)); 330 extern tree walk_stmt_tree PARAMS ((tree *, 331 walk_tree_fn, 332 void *)); 333 extern void prep_stmt PARAMS ((tree)); 334 extern void expand_stmt PARAMS ((tree)); 335 extern void shadow_warning PARAMS ((const char *, 336 tree, tree)); 337 extern tree c_begin_if_stmt PARAMS ((void)); 338 extern tree c_begin_while_stmt PARAMS ((void)); 339 extern void c_finish_while_stmt_cond PARAMS ((tree, tree)); 340 341 342 /* Extra information associated with a DECL. Other C dialects extend 343 this structure in various ways. The C front-end only uses this 344 structure for FUNCTION_DECLs; all other DECLs have a NULL 345 DECL_LANG_SPECIFIC field. */ 346 347 struct c_lang_decl GTY(()) { 348 unsigned declared_inline : 1; 349 }; 350 351 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is 352 the approximate number of statements in this function. There is 353 no need for this number to be exact; it is only used in various 354 heuristics regarding optimization. */ 355 #define DECL_NUM_STMTS(NODE) \ 356 (FUNCTION_DECL_CHECK (NODE)->decl.u1.i) 357 358 /* The variant of the C language being processed. Each C language 359 front-end defines this variable. */ 360 361 extern c_language_kind c_language; 362 363 /* Switches common to the C front ends. */ 364 365 /* Nonzero if prepreprocessing only. */ 366 extern int flag_preprocess_only; 367 368 /* Nonzero if an ISO standard was selected. It rejects macros in the 369 user's namespace. */ 370 extern int flag_iso; 371 372 /* Nonzero whenever Objective-C functionality is being used. */ 373 extern int flag_objc; 374 375 /* Nonzero if -undef was given. It suppresses target built-in macros 376 and assertions. */ 377 extern int flag_undef; 378 379 /* Nonzero means don't recognize the non-ANSI builtin functions. */ 380 381 extern int flag_no_builtin; 382 383 /* Nonzero means don't recognize the non-ANSI builtin functions. 384 -ansi sets this. */ 385 386 extern int flag_no_nonansi_builtin; 387 388 /* Nonzero means give `double' the same size as `float'. */ 389 390 extern int flag_short_double; 391 392 /* Nonzero means give `wchar_t' the same size as `short'. */ 393 394 extern int flag_short_wchar; 395 396 /* Nonzero means allow Microsoft extensions without warnings or errors. */ 397 extern int flag_ms_extensions; 398 399 /* Nonzero means don't recognize the keyword `asm'. */ 400 401 extern int flag_no_asm; 402 403 /* Nonzero means give string constants the type `const char *', as mandated 404 by the standard. */ 405 406 extern int flag_const_strings; 407 408 /* Nonzero means `$' can be in an identifier. */ 409 410 extern int dollars_in_ident; 411 412 /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */ 413 414 extern int flag_signed_bitfields; 415 extern int explicit_flag_signed_bitfields; 416 417 /* Nonzero means warn about pointer casts that can drop a type qualifier 418 from the pointer target type. */ 419 420 extern int warn_cast_qual; 421 422 /* Warn about functions which might be candidates for format attributes. */ 423 424 extern int warn_missing_format_attribute; 425 426 /* Nonzero means warn about sizeof(function) or addition/subtraction 427 of function pointers. */ 428 429 extern int warn_pointer_arith; 430 431 /* Nonzero means warn for any global function def 432 without separate previous prototype decl. */ 433 434 extern int warn_missing_prototypes; 435 436 /* Warn if adding () is suggested. */ 437 438 extern int warn_parentheses; 439 440 /* Warn if initializer is not completely bracketed. */ 441 442 extern int warn_missing_braces; 443 444 /* Warn about comparison of signed and unsigned values. 445 If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */ 446 447 extern int warn_sign_compare; 448 449 /* Nonzero means warn about usage of long long when `-pedantic'. */ 450 451 extern int warn_long_long; 452 453 /* Nonzero means warn about deprecated conversion from string constant to 454 `char *'. */ 455 456 extern int warn_write_strings; 457 458 /* Nonzero means warn about multiple (redundant) decls for the same single 459 variable or function. */ 460 461 extern int warn_redundant_decls; 462 463 /* Warn about testing equality of floating point numbers. */ 464 465 extern int warn_float_equal; 466 467 /* Warn about a subscript that has type char. */ 468 469 extern int warn_char_subscripts; 470 471 /* Warn if a type conversion is done that might have confusing results. */ 472 473 extern int warn_conversion; 474 475 /* Warn about #pragma directives that are not recognized. */ 476 477 extern int warn_unknown_pragmas; /* Tri state variable. */ 478 479 /* Warn about format/argument anomalies in calls to formatted I/O functions 480 (*printf, *scanf, strftime, strfmon, etc.). */ 481 482 extern int warn_format; 483 484 /* Warn about Y2K problems with strftime formats. */ 485 486 extern int warn_format_y2k; 487 488 /* Warn about excess arguments to formats. */ 489 490 extern int warn_format_extra_args; 491 492 /* Warn about zero-length formats. */ 493 494 extern int warn_format_zero_length; 495 496 /* Warn about non-literal format arguments. */ 497 498 extern int warn_format_nonliteral; 499 500 /* Warn about possible security problems with calls to format functions. */ 501 502 extern int warn_format_security; 503 504 /* Warn about buffer size mismatches. */ 505 506 extern int warn_bounded; 507 508 /* C/ObjC language option variables. */ 509 510 511 /* Nonzero means message about use of implicit function declarations; 512 1 means warning; 2 means error. */ 513 514 extern int mesg_implicit_function_declaration; 515 516 /* Nonzero means allow type mismatches in conditional expressions; 517 just make their values `void'. */ 518 519 extern int flag_cond_mismatch; 520 521 /* Nonzero means enable C89 Amendment 1 features. */ 522 523 extern int flag_isoc94; 524 525 /* Nonzero means use the ISO C99 dialect of C. */ 526 527 extern int flag_isoc99; 528 529 /* Nonzero means that we have builtin functions, and main is an int */ 530 531 extern int flag_hosted; 532 533 /* Nonzero means add default format_arg attributes for functions not 534 in ISO C. */ 535 536 extern int flag_noniso_default_format_attributes; 537 538 /* Nonzero means warn when casting a function call to a type that does 539 not match the return type (e.g. (float)sqrt() or (anything*)malloc() 540 when there is no previous declaration of sqrt or malloc. */ 541 542 extern int warn_bad_function_cast; 543 544 /* Warn about traditional constructs whose meanings changed in ANSI C. */ 545 546 extern int warn_traditional; 547 548 /* Nonzero means warn for non-prototype function decls 549 or non-prototyped defs without previous prototype. */ 550 551 extern int warn_strict_prototypes; 552 553 /* Nonzero means warn for any global function def 554 without separate previous decl. */ 555 556 extern int warn_missing_declarations; 557 558 /* Nonzero means warn about extern declarations of objects not at 559 file-scope level and about *all* declarations of functions (whether 560 extern or static) not at file-scope level. Note that we exclude 561 implicit function declarations. To get warnings about those, use 562 -Wimplicit. */ 563 564 extern int warn_nested_externs; 565 566 /* Warn if main is suspicious. */ 567 568 extern int warn_main; 569 570 /* Nonzero means warn about possible violations of sequence point rules. */ 571 572 extern int warn_sequence_point; 573 574 /* Nonzero means to warn about compile-time division by zero. */ 575 extern int warn_div_by_zero; 576 577 /* Nonzero means warn about use of implicit int. */ 578 579 extern int warn_implicit_int; 580 581 /* Warn about NULL being passed to argument slots marked as requiring 582 non-NULL. */ 583 584 extern int warn_nonnull; 585 586 587 /* ObjC language option variables. */ 588 589 590 /* Open and close the file for outputting class declarations, if 591 requested (ObjC). */ 592 593 extern int flag_gen_declaration; 594 595 /* Generate code for GNU or NeXT runtime environment. */ 596 597 extern int flag_next_runtime; 598 599 /* Tells the compiler that this is a special run. Do not perform any 600 compiling, instead we are to test some platform dependent features 601 and output a C header file with appropriate definitions. */ 602 603 extern int print_struct_values; 604 605 /* ???. Undocumented. */ 606 607 extern const char *constant_string_class_name; 608 609 /* Warn if multiple methods are seen for the same selector, but with 610 different argument types. Performs the check on the whole selector 611 table at the end of compilation. */ 612 613 extern int warn_selector; 614 615 /* Warn if a @selector() is found, and no method with that selector 616 has been previously declared. The check is done on each 617 @selector() as soon as it is found - so it warns about forward 618 declarations. */ 619 620 extern int warn_undeclared_selector; 621 622 /* Warn if methods required by a protocol are not implemented in the 623 class adopting it. When turned off, methods inherited to that 624 class are also considered implemented. */ 625 626 extern int warn_protocol; 627 628 629 /* C++ language option variables. */ 630 631 632 /* Nonzero means don't recognize any extension keywords. */ 633 634 extern int flag_no_gnu_keywords; 635 636 /* Nonzero means do emit exported implementations of functions even if 637 they can be inlined. */ 638 639 extern int flag_implement_inlines; 640 641 /* Nonzero means do emit exported implementations of templates, instead of 642 multiple static copies in each file that needs a definition. */ 643 644 extern int flag_external_templates; 645 646 /* Nonzero means that the decision to emit or not emit the implementation of a 647 template depends on where the template is instantiated, rather than where 648 it is defined. */ 649 650 extern int flag_alt_external_templates; 651 652 /* Nonzero means that implicit instantiations will be emitted if needed. */ 653 654 extern int flag_implicit_templates; 655 656 /* Nonzero means that implicit instantiations of inline templates will be 657 emitted if needed, even if instantiations of non-inline templates 658 aren't. */ 659 660 extern int flag_implicit_inline_templates; 661 662 /* Nonzero means generate separate instantiation control files and 663 juggle them at link time. */ 664 665 extern int flag_use_repository; 666 667 /* Nonzero if we want to issue diagnostics that the standard says are not 668 required. */ 669 670 extern int flag_optional_diags; 671 672 /* Nonzero means we should attempt to elide constructors when possible. */ 673 674 extern int flag_elide_constructors; 675 676 /* Nonzero means that member functions defined in class scope are 677 inline by default. */ 678 679 extern int flag_default_inline; 680 681 /* Controls whether compiler generates 'type descriptor' that give 682 run-time type information. */ 683 684 extern int flag_rtti; 685 686 /* Nonzero if we want to conserve space in the .o files. We do this 687 by putting uninitialized data and runtime initialized data into 688 .common instead of .data at the expense of not flagging multiple 689 definitions. */ 690 691 extern int flag_conserve_space; 692 693 /* Nonzero if we want to obey access control semantics. */ 694 695 extern int flag_access_control; 696 697 /* Nonzero if we want to check the return value of new and avoid calling 698 constructors if it is a null pointer. */ 699 700 extern int flag_check_new; 701 702 /* Nonzero if we want the new ISO rules for pushing a new scope for `for' 703 initialization variables. 704 0: Old rules, set by -fno-for-scope. 705 2: New ISO rules, set by -ffor-scope. 706 1: Try to implement new ISO rules, but with backup compatibility 707 (and warnings). This is the default, for now. */ 708 709 extern int flag_new_for_scope; 710 711 /* Nonzero if we want to emit defined symbols with common-like linkage as 712 weak symbols where possible, in order to conform to C++ semantics. 713 Otherwise, emit them as local symbols. */ 714 715 extern int flag_weak; 716 717 /* Nonzero to use __cxa_atexit, rather than atexit, to register 718 destructors for local statics and global objects. */ 719 720 extern int flag_use_cxa_atexit; 721 722 /* Nonzero means output .vtable_{entry,inherit} for use in doing vtable gc. */ 723 724 extern int flag_vtable_gc; 725 726 /* Nonzero means make the default pedwarns warnings instead of errors. 727 The value of this flag is ignored if -pedantic is specified. */ 728 729 extern int flag_permissive; 730 731 /* Nonzero means to implement standard semantics for exception 732 specifications, calling unexpected if an exception is thrown that 733 doesn't match the specification. Zero means to treat them as 734 assertions and optimize accordingly, but not check them. */ 735 736 extern int flag_enforce_eh_specs; 737 738 /* The version of the C++ ABI in use. The following values are 739 allowed: 740 741 0: The version of the ABI believed most conformant with the 742 C++ ABI specification. This ABI may change as bugs are 743 discovered and fixed. Therefore, 0 will not necessarily 744 indicate the same ABI in different versions of G++. 745 746 1: The version of the ABI first used in G++ 3.2. 747 748 Additional positive integers will be assigned as new versions of 749 the ABI become the default version of the ABI. */ 750 751 extern int flag_abi_version; 752 753 /* Nonzero means warn about things that will change when compiling 754 with an ABI-compliant compiler. */ 755 756 extern int warn_abi; 757 758 /* Nonzero means warn about implicit declarations. */ 759 760 extern int warn_implicit; 761 762 /* Nonzero means warn when all ctors or dtors are private, and the class 763 has no friends. */ 764 765 extern int warn_ctor_dtor_privacy; 766 767 /* Nonzero means warn in function declared in derived class has the 768 same name as a virtual in the base class, but fails to match the 769 type signature of any virtual function in the base class. */ 770 771 extern int warn_overloaded_virtual; 772 773 /* Nonzero means warn when declaring a class that has a non virtual 774 destructor, when it really ought to have a virtual one. */ 775 776 extern int warn_nonvdtor; 777 778 /* Nonzero means warn when the compiler will reorder code. */ 779 780 extern int warn_reorder; 781 782 /* Nonzero means warn when synthesis behavior differs from Cfront's. */ 783 784 extern int warn_synth; 785 786 /* Nonzero means warn when we convert a pointer to member function 787 into a pointer to (void or function). */ 788 789 extern int warn_pmf2ptr; 790 791 /* Nonzero means warn about violation of some Effective C++ style rules. */ 792 793 extern int warn_ecpp; 794 795 /* Nonzero means warn where overload resolution chooses a promotion from 796 unsigned to signed over a conversion to an unsigned of the same size. */ 797 798 extern int warn_sign_promo; 799 800 /* Nonzero means warn when an old-style cast is used. */ 801 802 extern int warn_old_style_cast; 803 804 /* Nonzero means warn when non-templatized friend functions are 805 declared within a template */ 806 807 extern int warn_nontemplate_friend; 808 809 /* Nonzero means complain about deprecated features. */ 810 811 extern int warn_deprecated; 812 813 /* Maximum template instantiation depth. This limit is rather 814 arbitrary, but it exists to limit the time it takes to notice 815 infinite template instantiations. */ 816 817 extern int max_tinst_depth; 818 819 /* Nonzero means the expression being parsed will never be evaluated. 820 This is a count, since unevaluated expressions can nest. */ 821 822 extern int skip_evaluation; 823 824 /* C types are partitioned into three subsets: object, function, and 825 incomplete types. */ 826 #define C_TYPE_OBJECT_P(type) \ 827 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type)) 828 829 #define C_TYPE_INCOMPLETE_P(type) \ 830 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0) 831 832 #define C_TYPE_FUNCTION_P(type) \ 833 (TREE_CODE (type) == FUNCTION_TYPE) 834 835 /* For convenience we define a single macro to identify the class of 836 object or incomplete types. */ 837 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \ 838 (!C_TYPE_FUNCTION_P (type)) 839 840 /* Record in each node resulting from a binary operator 841 what operator was specified for it. */ 842 #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp)) 843 844 /* Attribute table common to the C front ends. */ 845 extern const struct attribute_spec c_common_attribute_table[]; 846 extern const struct attribute_spec c_common_format_attribute_table[]; 847 848 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc. 849 ID is the identifier to use, NAME is the string. 850 TYPE_DEP indicates whether it depends on type of the function or not 851 (i.e. __PRETTY_FUNCTION__). */ 852 853 extern tree (*make_fname_decl) PARAMS ((tree, int)); 854 855 extern tree identifier_global_value PARAMS ((tree)); 856 extern void record_builtin_type PARAMS ((enum rid, 857 const char *, tree)); 858 extern tree build_void_list_node PARAMS ((void)); 859 extern void start_fname_decls PARAMS ((void)); 860 extern void finish_fname_decls PARAMS ((void)); 861 extern const char *fname_as_string PARAMS ((int)); 862 extern tree fname_decl PARAMS ((unsigned, tree)); 863 extern const char *fname_string PARAMS ((unsigned)); 864 865 extern void check_function_arguments PARAMS ((tree, tree)); 866 extern void check_function_arguments_recurse PARAMS ((void (*) (void *, 867 tree, 868 unsigned HOST_WIDE_INT), 869 void *, tree, 870 unsigned HOST_WIDE_INT)); 871 extern void check_function_format PARAMS ((int *, tree, tree)); 872 extern void check_function_bounded PARAMS ((int *, tree, tree)); 873 extern void set_Wformat PARAMS ((int)); 874 extern tree handle_bounded_attribute PARAMS ((tree *, tree, tree, 875 int, bool *)); 876 extern tree handle_format_attribute PARAMS ((tree *, tree, tree, 877 int, bool *)); 878 extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree, 879 int, bool *)); 880 extern void c_common_insert_default_attributes PARAMS ((tree)); 881 extern int c_common_decode_option PARAMS ((int, char **)); 882 extern tree c_common_type_for_mode PARAMS ((enum machine_mode, 883 int)); 884 extern tree c_common_type_for_size PARAMS ((unsigned int, int)); 885 extern tree c_common_unsigned_type PARAMS ((tree)); 886 extern tree c_common_signed_type PARAMS ((tree)); 887 extern tree c_common_signed_or_unsigned_type PARAMS ((int, tree)); 888 extern tree c_common_truthvalue_conversion PARAMS ((tree)); 889 extern void c_apply_type_quals_to_decl PARAMS ((int, tree)); 890 extern tree c_sizeof_or_alignof_type PARAMS ((tree, enum tree_code, int)); 891 extern tree c_alignof_expr PARAMS ((tree)); 892 /* Print an error message for invalid operands to arith operation CODE. 893 NOP_EXPR is used as a special case (see truthvalue_conversion). */ 894 extern void binary_op_error PARAMS ((enum tree_code)); 895 #define my_friendly_assert(EXP, N) (void) \ 896 (((EXP) == 0) ? (fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0) : 0) 897 898 extern tree c_expand_expr_stmt PARAMS ((tree)); 899 extern void c_expand_start_cond PARAMS ((tree, int, tree)); 900 extern void c_finish_then PARAMS ((void)); 901 extern void c_expand_start_else PARAMS ((void)); 902 extern void c_finish_else PARAMS ((void)); 903 extern void c_expand_end_cond PARAMS ((void)); 904 /* Validate the expression after `case' and apply default promotions. */ 905 extern tree check_case_value PARAMS ((tree)); 906 extern tree fix_string_type PARAMS ((tree)); 907 struct varray_head_tag; 908 extern tree combine_strings PARAMS ((struct varray_head_tag *)); 909 extern void constant_expression_warning PARAMS ((tree)); 910 extern tree convert_and_check PARAMS ((tree, tree)); 911 extern void overflow_warning PARAMS ((tree)); 912 extern void unsigned_conversion_warning PARAMS ((tree, tree)); 913 914 /* Read the rest of the current #-directive line. */ 915 extern char *get_directive_line PARAMS ((void)); 916 #define GET_DIRECTIVE_LINE() get_directive_line () 917 #define c_sizeof(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 1) 918 #define c_alignof(T) c_sizeof_or_alignof_type (T, ALIGNOF_EXPR, 1) 919 920 /* Subroutine of build_binary_op, used for comparison operations. 921 See if the operands have both been converted from subword integer types 922 and, if so, perhaps change them both back to their original type. */ 923 extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *)); 924 925 extern tree pointer_int_sum PARAMS ((enum tree_code, tree, tree)); 926 extern unsigned int min_precision PARAMS ((tree, int)); 927 928 /* Add qualifiers to a type, in the fashion for C. */ 929 extern tree c_build_qualified_type PARAMS ((tree, int)); 930 931 /* Build tree nodes and builtin functions common to both C and C++ language 932 frontends. */ 933 extern void c_common_nodes_and_builtins PARAMS ((void)); 934 935 extern void disable_builtin_function PARAMS ((const char *)); 936 937 extern tree build_va_arg PARAMS ((tree, tree)); 938 939 extern void c_common_init_options PARAMS ((enum c_language_kind)); 940 extern bool c_common_post_options PARAMS ((void)); 941 extern const char *c_common_init PARAMS ((const char *)); 942 extern void c_common_finish PARAMS ((void)); 943 extern void c_common_parse_file PARAMS ((int)); 944 extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree)); 945 extern bool c_promoting_integer_type_p PARAMS ((tree)); 946 extern int self_promoting_args_p PARAMS ((tree)); 947 extern tree strip_array_types PARAMS ((tree)); 948 949 /* These macros provide convenient access to the various _STMT nodes. */ 950 951 /* Nonzero if this statement should be considered a full-expression, 952 i.e., if temporaries created during this statement should have 953 their destructors run at the end of this statement. (In C, this 954 will always be false, since there are no destructors.) */ 955 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE)) 956 957 /* IF_STMT accessors. These give access to the condition of the if 958 statement, the then block of the if statement, and the else block 959 of the if statement if it exists. */ 960 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0) 961 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1) 962 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2) 963 964 /* WHILE_STMT accessors. These give access to the condition of the 965 while statement and the body of the while statement, respectively. */ 966 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0) 967 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1) 968 969 /* DO_STMT accessors. These give access to the condition of the do 970 statement and the body of the do statement, respectively. */ 971 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0) 972 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1) 973 974 /* RETURN_STMT accessors. These give the expression associated with a 975 return statement, and whether it should be ignored when expanding 976 (as opposed to inlining). */ 977 #define RETURN_STMT_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0) 978 979 /* EXPR_STMT accessor. This gives the expression associated with an 980 expression statement. */ 981 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0) 982 983 /* FOR_STMT accessors. These give access to the init statement, 984 condition, update expression, and body of the for statement, 985 respectively. */ 986 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0) 987 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1) 988 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2) 989 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3) 990 991 /* SWITCH_STMT accessors. These give access to the condition, body and 992 original condition type (before any compiler conversions) 993 of the switch statement, respectively. */ 994 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0) 995 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1) 996 #define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2) 997 998 /* CASE_LABEL accessors. These give access to the high and low values 999 of a case label, respectively. */ 1000 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0) 1001 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1) 1002 #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2) 1003 1004 /* GOTO_STMT accessor. This gives access to the label associated with 1005 a goto statement. */ 1006 #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0) 1007 /* True for goto created artifically by the compiler. */ 1008 #define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE))) 1009 1010 /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of 1011 statements associated with a compound statement. The result is the 1012 first statement in the list. Succeeding nodes can be accessed by 1013 calling TREE_CHAIN on a node in the list. */ 1014 #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0) 1015 1016 /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the 1017 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and 1018 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the 1019 statement. */ 1020 #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0) 1021 #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1) 1022 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2) 1023 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3) 1024 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4) 1025 1026 /* DECL_STMT accessor. This gives access to the DECL associated with 1027 the given declaration statement. */ 1028 #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0) 1029 1030 /* STMT_EXPR accessor. */ 1031 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0) 1032 1033 /* Nonzero if this statement-expression does not have an associated scope. */ 1034 #define STMT_EXPR_NO_SCOPE(NODE) \ 1035 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE)) 1036 1037 /* LABEL_STMT accessor. This gives access to the label associated with 1038 the given label statement. */ 1039 #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0) 1040 1041 /* COMPOUND_LITERAL_EXPR accessors. */ 1042 #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \ 1043 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0) 1044 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \ 1045 DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE)) 1046 1047 /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */ 1048 #define SCOPE_BEGIN_P(NODE) \ 1049 (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE))) 1050 1051 /* Nonzero if this SCOPE_STMT is for the end of a scope. */ 1052 #define SCOPE_END_P(NODE) \ 1053 (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE))) 1054 1055 /* The BLOCK containing the declarations contained in this scope. */ 1056 #define SCOPE_STMT_BLOCK(NODE) \ 1057 (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0)) 1058 1059 /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */ 1060 #define SCOPE_NULLIFIED_P(NODE) \ 1061 (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE) 1062 1063 /* Nonzero for a SCOPE_STMT which represents a lexical scope, but 1064 which should be treated as non-existent from the point of view of 1065 running cleanup actions. */ 1066 #define SCOPE_NO_CLEANUPS_P(NODE) \ 1067 (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE))) 1068 1069 /* Nonzero for a SCOPE_STMT if this statement is for a partial scope. 1070 For example, in: 1071 1072 S s; 1073 l: 1074 S s2; 1075 goto l; 1076 1077 there is (implicitly) a new scope after `l', even though there are 1078 no curly braces. In particular, when we hit the goto, we must 1079 destroy s2 and then re-construct it. For the implicit scope, 1080 SCOPE_PARTIAL_P will be set. */ 1081 #define SCOPE_PARTIAL_P(NODE) \ 1082 (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE))) 1083 1084 /* Nonzero for an ASM_STMT if the assembly statement is volatile. */ 1085 #define ASM_VOLATILE_P(NODE) \ 1086 (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE) 1087 1088 /* The VAR_DECL to clean up in a CLEANUP_STMT. */ 1089 #define CLEANUP_DECL(NODE) \ 1090 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0) 1091 /* The cleanup to run in a CLEANUP_STMT. */ 1092 #define CLEANUP_EXPR(NODE) \ 1093 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1) 1094 1095 /* The filename we are changing to as of this FILE_STMT. */ 1096 #define FILE_STMT_FILENAME_NODE(NODE) \ 1097 (TREE_OPERAND (FILE_STMT_CHECK (NODE), 0)) 1098 #define FILE_STMT_FILENAME(NODE) \ 1099 (IDENTIFIER_POINTER (FILE_STMT_FILENAME_NODE (NODE))) 1100 1101 /* The line-number at which a statement began. But if 1102 STMT_LINENO_FOR_FN_P does holds, then this macro gives the 1103 line number for the end of the current function instead. */ 1104 #define STMT_LINENO(NODE) \ 1105 (TREE_COMPLEXITY ((NODE))) 1106 1107 /* If nonzero, the STMT_LINENO for NODE is the line at which the 1108 function ended. */ 1109 #define STMT_LINENO_FOR_FN_P(NODE) \ 1110 (TREE_LANG_FLAG_2 ((NODE))) 1111 1112 /* Nonzero if we want the new ISO rules for pushing a new scope for `for' 1113 initialization variables. */ 1114 #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE)) 1115 1116 /* Nonzero if we want to create an ASM_INPUT instead of an 1117 ASM_OPERAND with no operands. */ 1118 #define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE)) 1119 1120 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM, 1121 1122 enum c_tree_code { 1123 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE, 1124 #include "c-common.def" 1125 LAST_C_TREE_CODE 1126 }; 1127 1128 #undef DEFTREECODE 1129 1130 extern void genrtl_do_pushlevel PARAMS ((void)); 1131 extern void genrtl_goto_stmt PARAMS ((tree)); 1132 extern void genrtl_expr_stmt PARAMS ((tree)); 1133 extern void genrtl_expr_stmt_value PARAMS ((tree, int, int)); 1134 extern void genrtl_decl_stmt PARAMS ((tree)); 1135 extern void genrtl_if_stmt PARAMS ((tree)); 1136 extern void genrtl_while_stmt PARAMS ((tree)); 1137 extern void genrtl_do_stmt PARAMS ((tree)); 1138 extern void genrtl_return_stmt PARAMS ((tree)); 1139 extern void genrtl_for_stmt PARAMS ((tree)); 1140 extern void genrtl_break_stmt PARAMS ((void)); 1141 extern void genrtl_continue_stmt PARAMS ((void)); 1142 extern void genrtl_scope_stmt PARAMS ((tree)); 1143 extern void genrtl_switch_stmt PARAMS ((tree)); 1144 extern void genrtl_case_label PARAMS ((tree)); 1145 extern void genrtl_compound_stmt PARAMS ((tree)); 1146 extern void genrtl_asm_stmt PARAMS ((tree, tree, 1147 tree, tree, 1148 tree, int)); 1149 extern void genrtl_decl_cleanup PARAMS ((tree)); 1150 extern int stmts_are_full_exprs_p PARAMS ((void)); 1151 extern int anon_aggr_type_p PARAMS ((tree)); 1152 1153 /* For a VAR_DECL that is an anonymous union, these are the various 1154 sub-variables that make up the anonymous union. */ 1155 #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE)) 1156 1157 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */ 1158 #define DECL_C_BIT_FIELD(NODE) \ 1159 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1) 1160 #define SET_DECL_C_BIT_FIELD(NODE) \ 1161 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1) 1162 #define CLEAR_DECL_C_BIT_FIELD(NODE) \ 1163 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0) 1164 1165 /* In a VAR_DECL, nonzero if the decl is a register variable with 1166 an explicit asm specification. */ 1167 #define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL)) 1168 1169 extern void emit_local_var PARAMS ((tree)); 1170 extern void make_rtl_for_local_static PARAMS ((tree)); 1171 extern tree expand_cond PARAMS ((tree)); 1172 extern tree c_expand_return PARAMS ((tree)); 1173 extern tree do_case PARAMS ((tree, tree)); 1174 extern tree build_stmt PARAMS ((enum tree_code, ...)); 1175 extern tree build_case_label PARAMS ((tree, tree, tree)); 1176 extern tree build_continue_stmt PARAMS ((void)); 1177 extern tree build_break_stmt PARAMS ((void)); 1178 extern tree build_return_stmt PARAMS ((tree)); 1179 1180 #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE) 1181 1182 /* Used by the C++ frontend to mark the block around the member 1183 initializers and cleanups. */ 1184 #define COMPOUND_STMT_BODY_BLOCK(NODE) TREE_LANG_FLAG_3 (NODE) 1185 1186 extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int)); 1187 1188 /* These functions must be defined by each front-end which implements 1189 a variant of the C language. They are used in c-common.c. */ 1190 1191 extern tree build_unary_op PARAMS ((enum tree_code, 1192 tree, int)); 1193 extern tree build_binary_op PARAMS ((enum tree_code, 1194 tree, tree, int)); 1195 extern int lvalue_p PARAMS ((tree)); 1196 extern tree default_conversion PARAMS ((tree)); 1197 1198 /* Given two integer or real types, return the type for their sum. 1199 Given two compatible ANSI C types, returns the merged type. */ 1200 1201 extern tree common_type PARAMS ((tree, tree)); 1202 1203 extern tree expand_tree_builtin PARAMS ((tree, tree, tree)); 1204 1205 extern tree decl_constant_value PARAMS ((tree)); 1206 1207 /* Handle increment and decrement of boolean types. */ 1208 extern tree boolean_increment PARAMS ((enum tree_code, 1209 tree)); 1210 1211 /* Hook currently used only by the C++ front end to reset internal state 1212 after entering or leaving a header file. */ 1213 extern void extract_interface_info PARAMS ((void)); 1214 1215 extern int case_compare PARAMS ((splay_tree_key, 1216 splay_tree_key)); 1217 1218 extern tree c_add_case_label PARAMS ((splay_tree, 1219 tree, tree, 1220 tree)); 1221 1222 extern tree build_function_call PARAMS ((tree, tree)); 1223 1224 extern tree finish_label_address_expr PARAMS ((tree)); 1225 1226 /* Same function prototype, but the C and C++ front ends have 1227 different implementations. Used in c-common.c. */ 1228 extern tree lookup_label PARAMS ((tree)); 1229 1230 extern rtx c_expand_expr PARAMS ((tree, rtx, 1231 enum machine_mode, 1232 int)); 1233 1234 extern int c_safe_from_p PARAMS ((rtx, tree)); 1235 1236 extern int c_staticp PARAMS ((tree)); 1237 1238 extern int c_common_unsafe_for_reeval PARAMS ((tree)); 1239 1240 extern const char *init_c_lex PARAMS ((const char *)); 1241 1242 extern void cb_register_builtins PARAMS ((cpp_reader *)); 1243 1244 /* Information recorded about each file examined during compilation. */ 1245 1246 struct c_fileinfo 1247 { 1248 int time; /* Time spent in the file. */ 1249 short interface_only; /* Flags - used only by C++ */ 1250 short interface_unknown; 1251 }; 1252 1253 struct c_fileinfo *get_fileinfo PARAMS ((const char *)); 1254 extern void dump_time_statistics PARAMS ((void)); 1255 1256 extern int c_dump_tree PARAMS ((void *, tree)); 1257 1258 #endif /* ! GCC_C_COMMON_H */ 1259