1 /* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GCC.
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
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
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
22 #ifndef GCC_C_COMMON_H
23 #define GCC_C_COMMON_H
25 #include "splay-tree.h"
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)
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. */
54 /* C, in empirical order of frequency. */
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,
61 RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX, RID_THREAD,
64 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
67 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
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,
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,
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,
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,
94 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
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,
105 RID_FIRST_MODIFIER = RID_STATIC,
106 RID_LAST_MODIFIER = RID_ONEWAY,
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
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)
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)
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 GTY ((length ("(int)RID_MAX"))) tree *ridpointers;
126 /* Standard named or nameless data types of the C compiler. */
131 CTI_SIGNED_WCHAR_TYPE,
132 CTI_UNSIGNED_WCHAR_TYPE,
134 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
135 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
138 CTI_WIDEST_INT_LIT_TYPE,
139 CTI_WIDEST_UINT_LIT_TYPE,
142 CTI_WCHAR_ARRAY_TYPE,
145 CTI_CONST_STRING_TYPE,
147 /* Type for boolean expressions (bool in C++, int in C). */
151 /* C99's _Bool type. */
155 CTI_DEFAULT_FUNCTION_TYPE,
157 CTI_G77_INTEGER_TYPE,
158 CTI_G77_UINTEGER_TYPE,
159 CTI_G77_LONGINT_TYPE,
160 CTI_G77_ULONGINT_TYPE,
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,
173 #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code)
175 /* Identifier part common to the C front ends. Inherits from
176 tree_identifier, despite appearances. */
177 struct c_common_identifier GTY(())
179 struct tree_common common;
180 struct cpp_hashnode node;
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]
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]
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]
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]
208 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
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]
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]
221 /* A node for `((void) 0)'. */
222 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
224 extern GTY(()) tree c_global_trees[CTI_MAX];
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)
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)
234 typedef enum c_language_kind
236 clk_c = 0, /* A dialect of C: K&R C, ANSI/ISO C89, C2000, etc. */
237 clk_cplusplus /* ANSI/ISO C++ */
241 /* Information about a statement tree. */
243 struct stmt_tree_s GTY(()) {
244 /* The last statement added to the tree. */
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
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.
264 This flag has no effect in C. */
265 int stmts_are_full_exprs_p;
268 typedef struct stmt_tree_s *stmt_tree;
270 /* Global state pertinent to the current function. Some C dialects
271 extend this structure with additional fields. */
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;
281 /* When building a statement-tree, this is the last statement added to
284 #define last_tree (current_stmt_tree ()->x_last_stmt)
286 /* The type of the last expression-statement we have seen. */
288 #define last_expr_type (current_stmt_tree ()->x_last_expr_type)
290 /* The name of the last file we have seen. */
292 #define last_expr_filename (current_stmt_tree ()->x_last_expr_filename)
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. */
299 #define RECHAIN_STMTS(stmt, substmt) \
301 substmt = TREE_CHAIN (stmt); \
302 TREE_CHAIN (stmt) = NULL_TREE; \
306 /* Language-specific hooks. */
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));
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));
318 extern int yyparse PARAMS ((void));
319 extern void free_parser_stacks PARAMS ((void));
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 *));
329 extern int statement_code_p PARAMS ((enum tree_code));
330 extern tree walk_stmt_tree PARAMS ((tree *,
333 extern void prep_stmt PARAMS ((tree));
334 extern void expand_stmt PARAMS ((tree));
335 extern tree c_begin_if_stmt PARAMS ((void));
336 extern tree c_begin_while_stmt PARAMS ((void));
337 extern void c_finish_while_stmt_cond PARAMS ((tree, tree));
339 enum sw_kind { SW_PARAM = 0, SW_LOCAL, SW_GLOBAL };
340 extern void shadow_warning PARAMS ((enum sw_kind, int,
341 const char *, tree));
343 /* Extra information associated with a DECL. Other C dialects extend
344 this structure in various ways. The C front-end only uses this
345 structure for FUNCTION_DECLs; all other DECLs have a NULL
346 DECL_LANG_SPECIFIC field. */
348 struct c_lang_decl GTY(()) {
349 unsigned declared_inline : 1;
352 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is
353 the approximate number of statements in this function. There is
354 no need for this number to be exact; it is only used in various
355 heuristics regarding optimization. */
356 #define DECL_NUM_STMTS(NODE) \
357 (FUNCTION_DECL_CHECK (NODE)->decl.u1.i)
359 /* The variant of the C language being processed. Each C language
360 front-end defines this variable. */
362 extern c_language_kind c_language;
364 /* Nonzero if we can read a PCH file now. */
366 extern int allow_pch;
368 /* Switches common to the C front ends. */
370 /* Nonzero if prepreprocessing only. */
372 extern int flag_preprocess_only;
374 /* Nonzero means don't output line number information. */
376 extern char flag_no_line_commands;
378 /* Nonzero causes -E output not to be done, but directives such as
379 #define that have side effects are still obeyed. */
381 extern char flag_no_output;
383 /* Nonzero means dump macros in some fashion; contains the 'D', 'M' or
384 'N' of the command line switch. */
386 extern char flag_dump_macros;
388 /* Nonzero means pass #include lines through to the output. */
390 extern char flag_dump_includes;
392 /* The file name to which we should write a precompiled header, or
393 NULL if no header will be written in this compile. */
395 extern const char *pch_file;
397 /* Nonzero if an ISO standard was selected. It rejects macros in the
402 /* Nonzero whenever Objective-C functionality is being used. */
403 extern int flag_objc;
405 /* Nonzero if -undef was given. It suppresses target built-in macros
408 extern int flag_undef;
410 /* Nonzero means don't recognize the non-ANSI builtin functions. */
412 extern int flag_no_builtin;
414 /* Nonzero means don't recognize the non-ANSI builtin functions.
417 extern int flag_no_nonansi_builtin;
419 /* Nonzero means give `double' the same size as `float'. */
421 extern int flag_short_double;
423 /* Nonzero means give `wchar_t' the same size as `short'. */
425 extern int flag_short_wchar;
427 /* Nonzero means allow Microsoft extensions without warnings or errors. */
428 extern int flag_ms_extensions;
430 /* Nonzero means don't recognize the keyword `asm'. */
432 extern int flag_no_asm;
434 /* Nonzero means give string constants the type `const char *', as mandated
437 extern int flag_const_strings;
439 /* Nonzero means `$' can be in an identifier. */
441 extern int dollars_in_ident;
443 /* Nonzero means to treat bitfields as signed unless they say `unsigned'. */
445 extern int flag_signed_bitfields;
446 extern int explicit_flag_signed_bitfields;
448 /* Nonzero means warn about pointer casts that can drop a type qualifier
449 from the pointer target type. */
451 extern int warn_cast_qual;
453 /* Warn about functions which might be candidates for format attributes. */
455 extern int warn_missing_format_attribute;
457 /* Nonzero means warn about sizeof(function) or addition/subtraction
458 of function pointers. */
460 extern int warn_pointer_arith;
462 /* Nonzero means warn for any global function def
463 without separate previous prototype decl. */
465 extern int warn_missing_prototypes;
467 /* Warn if adding () is suggested. */
469 extern int warn_parentheses;
471 /* Warn if initializer is not completely bracketed. */
473 extern int warn_missing_braces;
475 /* Warn about comparison of signed and unsigned values.
476 If -1, neither -Wsign-compare nor -Wno-sign-compare has been specified. */
478 extern int warn_sign_compare;
480 /* Nonzero means warn about usage of long long when `-pedantic'. */
482 extern int warn_long_long;
484 /* Nonzero means warn about deprecated conversion from string constant to
487 extern int warn_write_strings;
489 /* Nonzero means warn about multiple (redundant) decls for the same single
490 variable or function. */
492 extern int warn_redundant_decls;
494 /* Warn about testing equality of floating point numbers. */
496 extern int warn_float_equal;
498 /* Warn about a subscript that has type char. */
500 extern int warn_char_subscripts;
502 /* Warn if a type conversion is done that might have confusing results. */
504 extern int warn_conversion;
506 /* Warn about #pragma directives that are not recognized. */
508 extern int warn_unknown_pragmas; /* Tri state variable. */
510 /* Warn about format/argument anomalies in calls to formatted I/O functions
511 (*printf, *scanf, strftime, strfmon, etc.). */
513 extern int warn_format;
515 /* Warn about Y2K problems with strftime formats. */
517 extern int warn_format_y2k;
519 /* Warn about excess arguments to formats. */
521 extern int warn_format_extra_args;
523 /* Warn about zero-length formats. */
525 extern int warn_format_zero_length;
527 /* Warn about non-literal format arguments. */
529 extern int warn_format_nonliteral;
531 /* Warn about possible security problems with calls to format functions. */
533 extern int warn_format_security;
536 /* C/ObjC language option variables. */
539 /* Nonzero means message about use of implicit function declarations;
540 1 means warning; 2 means error. */
542 extern int mesg_implicit_function_declaration;
544 /* Nonzero means allow type mismatches in conditional expressions;
545 just make their values `void'. */
547 extern int flag_cond_mismatch;
549 /* Nonzero means enable C89 Amendment 1 features. */
551 extern int flag_isoc94;
553 /* Nonzero means use the ISO C99 dialect of C. */
555 extern int flag_isoc99;
557 /* Nonzero means that we have builtin functions, and main is an int */
559 extern int flag_hosted;
561 /* Nonzero means add default format_arg attributes for functions not
564 extern int flag_noniso_default_format_attributes;
566 /* Nonzero means warn when casting a function call to a type that does
567 not match the return type (e.g. (float)sqrt() or (anything*)malloc()
568 when there is no previous declaration of sqrt or malloc. */
570 extern int warn_bad_function_cast;
572 /* Warn about traditional constructs whose meanings changed in ANSI C. */
574 extern int warn_traditional;
576 /* Nonzero means warn for non-prototype function decls
577 or non-prototyped defs without previous prototype. */
579 extern int warn_strict_prototypes;
581 /* Nonzero means warn for any global function def
582 without separate previous decl. */
584 extern int warn_missing_declarations;
586 /* Nonzero means warn about extern declarations of objects not at
587 file-scope level and about *all* declarations of functions (whether
588 extern or static) not at file-scope level. Note that we exclude
589 implicit function declarations. To get warnings about those, use
592 extern int warn_nested_externs;
594 /* Warn if main is suspicious. */
596 extern int warn_main;
598 /* Nonzero means warn about possible violations of sequence point rules. */
600 extern int warn_sequence_point;
602 /* Nonzero means to warn about compile-time division by zero. */
603 extern int warn_div_by_zero;
605 /* Nonzero means warn about use of implicit int. */
607 extern int warn_implicit_int;
609 /* Warn about NULL being passed to argument slots marked as requiring
612 extern int warn_nonnull;
615 /* ObjC language option variables. */
618 /* Open and close the file for outputting class declarations, if
621 extern int flag_gen_declaration;
623 /* Generate code for GNU or NeXT runtime environment. */
625 extern int flag_next_runtime;
627 /* Tells the compiler that this is a special run. Do not perform any
628 compiling, instead we are to test some platform dependent features
629 and output a C header file with appropriate definitions. */
631 extern int print_struct_values;
633 /* ???. Undocumented. */
635 extern const char *constant_string_class_name;
637 /* Warn if multiple methods are seen for the same selector, but with
638 different argument types. Performs the check on the whole selector
639 table at the end of compilation. */
641 extern int warn_selector;
643 /* Warn if a @selector() is found, and no method with that selector
644 has been previously declared. The check is done on each
645 @selector() as soon as it is found - so it warns about forward
648 extern int warn_undeclared_selector;
650 /* Warn if methods required by a protocol are not implemented in the
651 class adopting it. When turned off, methods inherited to that
652 class are also considered implemented. */
654 extern int warn_protocol;
657 /* C++ language option variables. */
660 /* Nonzero means don't recognize any extension keywords. */
662 extern int flag_no_gnu_keywords;
664 /* Nonzero means do emit exported implementations of functions even if
665 they can be inlined. */
667 extern int flag_implement_inlines;
669 /* Nonzero means do emit exported implementations of templates, instead of
670 multiple static copies in each file that needs a definition. */
672 extern int flag_external_templates;
674 /* Nonzero means that the decision to emit or not emit the implementation of a
675 template depends on where the template is instantiated, rather than where
678 extern int flag_alt_external_templates;
680 /* Nonzero means that implicit instantiations will be emitted if needed. */
682 extern int flag_implicit_templates;
684 /* Nonzero means that implicit instantiations of inline templates will be
685 emitted if needed, even if instantiations of non-inline templates
688 extern int flag_implicit_inline_templates;
690 /* Nonzero means generate separate instantiation control files and
691 juggle them at link time. */
693 extern int flag_use_repository;
695 /* Nonzero if we want to issue diagnostics that the standard says are not
698 extern int flag_optional_diags;
700 /* Nonzero means we should attempt to elide constructors when possible. */
702 extern int flag_elide_constructors;
704 /* Nonzero means that member functions defined in class scope are
705 inline by default. */
707 extern int flag_default_inline;
709 /* Controls whether compiler generates 'type descriptor' that give
710 run-time type information. */
712 extern int flag_rtti;
714 /* Nonzero if we want to conserve space in the .o files. We do this
715 by putting uninitialized data and runtime initialized data into
716 .common instead of .data at the expense of not flagging multiple
719 extern int flag_conserve_space;
721 /* Nonzero if we want to obey access control semantics. */
723 extern int flag_access_control;
725 /* Nonzero if we want to check the return value of new and avoid calling
726 constructors if it is a null pointer. */
728 extern int flag_check_new;
730 /* Nonzero if we want the new ISO rules for pushing a new scope for `for'
731 initialization variables.
732 0: Old rules, set by -fno-for-scope.
733 2: New ISO rules, set by -ffor-scope.
734 1: Try to implement new ISO rules, but with backup compatibility
735 (and warnings). This is the default, for now. */
737 extern int flag_new_for_scope;
739 /* Nonzero if we want to emit defined symbols with common-like linkage as
740 weak symbols where possible, in order to conform to C++ semantics.
741 Otherwise, emit them as local symbols. */
743 extern int flag_weak;
745 /* Nonzero to use __cxa_atexit, rather than atexit, to register
746 destructors for local statics and global objects. */
748 extern int flag_use_cxa_atexit;
750 /* Nonzero means output .vtable_{entry,inherit} for use in doing vtable gc. */
752 extern int flag_vtable_gc;
754 /* Nonzero means make the default pedwarns warnings instead of errors.
755 The value of this flag is ignored if -pedantic is specified. */
757 extern int flag_permissive;
759 /* Nonzero means to implement standard semantics for exception
760 specifications, calling unexpected if an exception is thrown that
761 doesn't match the specification. Zero means to treat them as
762 assertions and optimize accordingly, but not check them. */
764 extern int flag_enforce_eh_specs;
766 /* The version of the C++ ABI in use. The following values are
769 0: The version of the ABI believed most conformant with the
770 C++ ABI specification. This ABI may change as bugs are
771 discovered and fixed. Therefore, 0 will not necessarily
772 indicate the same ABI in different versions of G++.
774 1: The version of the ABI first used in G++ 3.2.
776 Additional positive integers will be assigned as new versions of
777 the ABI become the default version of the ABI. */
779 extern int flag_abi_version;
781 /* Nonzero means warn about things that will change when compiling
782 with an ABI-compliant compiler. */
786 /* Nonzero means warn about implicit declarations. */
788 extern int warn_implicit;
790 /* Nonzero means warn when all ctors or dtors are private, and the class
793 extern int warn_ctor_dtor_privacy;
795 /* Nonzero means warn in function declared in derived class has the
796 same name as a virtual in the base class, but fails to match the
797 type signature of any virtual function in the base class. */
799 extern int warn_overloaded_virtual;
801 /* Nonzero means warn when declaring a class that has a non virtual
802 destructor, when it really ought to have a virtual one. */
804 extern int warn_nonvdtor;
806 /* Nonzero means warn when the compiler will reorder code. */
808 extern int warn_reorder;
810 /* Nonzero means warn when synthesis behavior differs from Cfront's. */
812 extern int warn_synth;
814 /* Nonzero means warn when we convert a pointer to member function
815 into a pointer to (void or function). */
817 extern int warn_pmf2ptr;
819 /* Nonzero means warn about violation of some Effective C++ style rules. */
821 extern int warn_ecpp;
823 /* Nonzero means warn where overload resolution chooses a promotion from
824 unsigned to signed over a conversion to an unsigned of the same size. */
826 extern int warn_sign_promo;
828 /* Nonzero means warn when an old-style cast is used. */
830 extern int warn_old_style_cast;
832 /* Nonzero means warn when non-templatized friend functions are
833 declared within a template */
835 extern int warn_nontemplate_friend;
837 /* Nonzero means complain about deprecated features. */
839 extern int warn_deprecated;
841 /* Maximum template instantiation depth. This limit is rather
842 arbitrary, but it exists to limit the time it takes to notice
843 infinite template instantiations. */
845 extern int max_tinst_depth;
847 /* Nonzero means the expression being parsed will never be evaluated.
848 This is a count, since unevaluated expressions can nest. */
850 extern int skip_evaluation;
852 /* C types are partitioned into three subsets: object, function, and
854 #define C_TYPE_OBJECT_P(type) \
855 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
857 #define C_TYPE_INCOMPLETE_P(type) \
858 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
860 #define C_TYPE_FUNCTION_P(type) \
861 (TREE_CODE (type) == FUNCTION_TYPE)
863 /* For convenience we define a single macro to identify the class of
864 object or incomplete types. */
865 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
866 (!C_TYPE_FUNCTION_P (type))
868 /* Record in each node resulting from a binary operator
869 what operator was specified for it. */
870 #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
872 /* Attribute table common to the C front ends. */
873 extern const struct attribute_spec c_common_attribute_table[];
874 extern const struct attribute_spec c_common_format_attribute_table[];
876 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
877 ID is the identifier to use, NAME is the string.
878 TYPE_DEP indicates whether it depends on type of the function or not
879 (i.e. __PRETTY_FUNCTION__). */
881 extern tree (*make_fname_decl) PARAMS ((tree, int));
883 extern tree identifier_global_value PARAMS ((tree));
884 extern void record_builtin_type PARAMS ((enum rid,
885 const char *, tree));
886 extern tree build_void_list_node PARAMS ((void));
887 extern void start_fname_decls PARAMS ((void));
888 extern void finish_fname_decls PARAMS ((void));
889 extern const char *fname_as_string PARAMS ((int));
890 extern tree fname_decl PARAMS ((unsigned, tree));
891 extern const char *fname_string PARAMS ((unsigned));
893 extern void check_function_arguments PARAMS ((tree, tree));
894 extern void check_function_arguments_recurse PARAMS ((void (*) (void *,
896 unsigned HOST_WIDE_INT),
898 unsigned HOST_WIDE_INT));
899 extern void check_function_format PARAMS ((int *, tree, tree));
900 extern void set_Wformat PARAMS ((int));
901 extern tree handle_format_attribute PARAMS ((tree *, tree, tree,
903 extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree,
905 extern void c_common_insert_default_attributes PARAMS ((tree));
906 extern int c_common_decode_option PARAMS ((int, char **));
907 extern tree c_common_type_for_mode PARAMS ((enum machine_mode,
909 extern tree c_common_type_for_size PARAMS ((unsigned int, int));
910 extern tree c_common_unsigned_type PARAMS ((tree));
911 extern tree c_common_signed_type PARAMS ((tree));
912 extern tree c_common_signed_or_unsigned_type PARAMS ((int, tree));
913 extern tree c_common_truthvalue_conversion PARAMS ((tree));
914 extern void c_apply_type_quals_to_decl PARAMS ((int, tree));
915 extern tree c_sizeof_or_alignof_type PARAMS ((tree, enum tree_code, int));
916 extern tree c_alignof_expr PARAMS ((tree));
917 /* Print an error message for invalid operands to arith operation CODE.
918 NOP_EXPR is used as a special case (see truthvalue_conversion). */
919 extern void binary_op_error PARAMS ((enum tree_code));
920 #define my_friendly_assert(EXP, N) (void) \
921 (((EXP) == 0) ? (fancy_abort (__FILE__, __LINE__, __FUNCTION__), 0) : 0)
923 extern tree c_expand_expr_stmt PARAMS ((tree));
924 extern void c_expand_start_cond PARAMS ((tree, int, tree));
925 extern void c_finish_then PARAMS ((void));
926 extern void c_expand_start_else PARAMS ((void));
927 extern void c_finish_else PARAMS ((void));
928 extern void c_expand_end_cond PARAMS ((void));
929 /* Validate the expression after `case' and apply default promotions. */
930 extern tree check_case_value PARAMS ((tree));
931 extern tree fix_string_type PARAMS ((tree));
932 struct varray_head_tag;
933 extern tree combine_strings PARAMS ((struct varray_head_tag *));
934 extern void constant_expression_warning PARAMS ((tree));
935 extern tree convert_and_check PARAMS ((tree, tree));
936 extern void overflow_warning PARAMS ((tree));
937 extern void unsigned_conversion_warning PARAMS ((tree, tree));
939 /* Read the rest of the current #-directive line. */
940 extern char *get_directive_line PARAMS ((void));
941 #define GET_DIRECTIVE_LINE() get_directive_line ()
942 #define c_sizeof(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 1)
943 #define c_alignof(T) c_sizeof_or_alignof_type (T, ALIGNOF_EXPR, 1)
945 /* Subroutine of build_binary_op, used for comparison operations.
946 See if the operands have both been converted from subword integer types
947 and, if so, perhaps change them both back to their original type. */
948 extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *));
950 extern tree pointer_int_sum PARAMS ((enum tree_code, tree, tree));
951 extern unsigned int min_precision PARAMS ((tree, int));
953 /* Add qualifiers to a type, in the fashion for C. */
954 extern tree c_build_qualified_type PARAMS ((tree, int));
956 /* Build tree nodes and builtin functions common to both C and C++ language
958 extern void c_common_nodes_and_builtins PARAMS ((void));
960 extern void disable_builtin_function PARAMS ((const char *));
962 extern tree build_va_arg PARAMS ((tree, tree));
964 extern void c_common_init_options PARAMS ((enum c_language_kind));
965 extern bool c_common_post_options PARAMS ((const char **));
966 extern bool c_common_init PARAMS ((void));
967 extern void c_common_finish PARAMS ((void));
968 extern void c_common_parse_file PARAMS ((int));
969 extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree));
970 extern bool c_promoting_integer_type_p PARAMS ((tree));
971 extern int self_promoting_args_p PARAMS ((tree));
972 extern tree strip_array_types PARAMS ((tree));
974 /* These macros provide convenient access to the various _STMT nodes. */
976 /* Nonzero if this statement should be considered a full-expression,
977 i.e., if temporaries created during this statement should have
978 their destructors run at the end of this statement. (In C, this
979 will always be false, since there are no destructors.) */
980 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
982 /* IF_STMT accessors. These give access to the condition of the if
983 statement, the then block of the if statement, and the else block
984 of the if statement if it exists. */
985 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
986 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
987 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
989 /* WHILE_STMT accessors. These give access to the condition of the
990 while statement and the body of the while statement, respectively. */
991 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
992 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
994 /* DO_STMT accessors. These give access to the condition of the do
995 statement and the body of the do statement, respectively. */
996 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
997 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
999 /* RETURN_STMT accessors. These give the expression associated with a
1000 return statement, and whether it should be ignored when expanding
1001 (as opposed to inlining). */
1002 #define RETURN_STMT_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0)
1004 /* EXPR_STMT accessor. This gives the expression associated with an
1005 expression statement. */
1006 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
1008 /* FOR_STMT accessors. These give access to the init statement,
1009 condition, update expression, and body of the for statement,
1011 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
1012 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
1013 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
1014 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
1016 /* SWITCH_STMT accessors. These give access to the condition, body and
1017 original condition type (before any compiler conversions)
1018 of the switch statement, respectively. */
1019 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
1020 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
1021 #define SWITCH_TYPE(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 2)
1023 /* CASE_LABEL accessors. These give access to the high and low values
1024 of a case label, respectively. */
1025 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0)
1026 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1)
1027 #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2)
1029 /* GOTO_STMT accessor. This gives access to the label associated with
1030 a goto statement. */
1031 #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0)
1032 /* True for goto created artificially by the compiler. */
1033 #define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE)))
1035 /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of
1036 statements associated with a compound statement. The result is the
1037 first statement in the list. Succeeding nodes can be accessed by
1038 calling TREE_CHAIN on a node in the list. */
1039 #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0)
1041 /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the
1042 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
1043 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
1045 #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0)
1046 #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1)
1047 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2)
1048 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3)
1049 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4)
1051 /* DECL_STMT accessor. This gives access to the DECL associated with
1052 the given declaration statement. */
1053 #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0)
1055 /* STMT_EXPR accessor. */
1056 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
1058 /* Nonzero if this statement-expression does not have an associated scope. */
1059 #define STMT_EXPR_NO_SCOPE(NODE) \
1060 TREE_LANG_FLAG_0 (STMT_EXPR_CHECK (NODE))
1062 /* LABEL_STMT accessor. This gives access to the label associated with
1063 the given label statement. */
1064 #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0)
1066 /* COMPOUND_LITERAL_EXPR accessors. */
1067 #define COMPOUND_LITERAL_EXPR_DECL_STMT(NODE) \
1068 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
1069 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
1070 DECL_STMT_DECL (COMPOUND_LITERAL_EXPR_DECL_STMT (NODE))
1072 /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */
1073 #define SCOPE_BEGIN_P(NODE) \
1074 (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE)))
1076 /* Nonzero if this SCOPE_STMT is for the end of a scope. */
1077 #define SCOPE_END_P(NODE) \
1078 (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE)))
1080 /* The BLOCK containing the declarations contained in this scope. */
1081 #define SCOPE_STMT_BLOCK(NODE) \
1082 (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0))
1084 /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */
1085 #define SCOPE_NULLIFIED_P(NODE) \
1086 (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE)
1088 /* Nonzero for a SCOPE_STMT which represents a lexical scope, but
1089 which should be treated as non-existent from the point of view of
1090 running cleanup actions. */
1091 #define SCOPE_NO_CLEANUPS_P(NODE) \
1092 (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE)))
1094 /* Nonzero for a SCOPE_STMT if this statement is for a partial scope.
1102 there is (implicitly) a new scope after `l', even though there are
1103 no curly braces. In particular, when we hit the goto, we must
1104 destroy s2 and then re-construct it. For the implicit scope,
1105 SCOPE_PARTIAL_P will be set. */
1106 #define SCOPE_PARTIAL_P(NODE) \
1107 (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE)))
1109 /* Nonzero for an ASM_STMT if the assembly statement is volatile. */
1110 #define ASM_VOLATILE_P(NODE) \
1111 (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE)
1113 /* The VAR_DECL to clean up in a CLEANUP_STMT. */
1114 #define CLEANUP_DECL(NODE) \
1115 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 0)
1116 /* The cleanup to run in a CLEANUP_STMT. */
1117 #define CLEANUP_EXPR(NODE) \
1118 TREE_OPERAND (CLEANUP_STMT_CHECK (NODE), 1)
1120 /* The filename we are changing to as of this FILE_STMT. */
1121 #define FILE_STMT_FILENAME_NODE(NODE) \
1122 (TREE_OPERAND (FILE_STMT_CHECK (NODE), 0))
1123 #define FILE_STMT_FILENAME(NODE) \
1124 (IDENTIFIER_POINTER (FILE_STMT_FILENAME_NODE (NODE)))
1126 /* The line-number at which a statement began. But if
1127 STMT_LINENO_FOR_FN_P does holds, then this macro gives the
1128 line number for the end of the current function instead. */
1129 #define STMT_LINENO(NODE) \
1130 (TREE_COMPLEXITY ((NODE)))
1132 /* If nonzero, the STMT_LINENO for NODE is the line at which the
1134 #define STMT_LINENO_FOR_FN_P(NODE) \
1135 (TREE_LANG_FLAG_2 ((NODE)))
1137 /* Nonzero if we want the new ISO rules for pushing a new scope for `for'
1138 initialization variables. */
1139 #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
1141 /* Nonzero if we want to create an ASM_INPUT instead of an
1142 ASM_OPERAND with no operands. */
1143 #define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE))
1145 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
1148 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE,
1149 #include "c-common.def"
1155 extern void genrtl_do_pushlevel PARAMS ((void));
1156 extern void genrtl_goto_stmt PARAMS ((tree));
1157 extern void genrtl_expr_stmt PARAMS ((tree));
1158 extern void genrtl_expr_stmt_value PARAMS ((tree, int, int));
1159 extern void genrtl_decl_stmt PARAMS ((tree));
1160 extern void genrtl_if_stmt PARAMS ((tree));
1161 extern void genrtl_while_stmt PARAMS ((tree));
1162 extern void genrtl_do_stmt PARAMS ((tree));
1163 extern void genrtl_return_stmt PARAMS ((tree));
1164 extern void genrtl_for_stmt PARAMS ((tree));
1165 extern void genrtl_break_stmt PARAMS ((void));
1166 extern void genrtl_continue_stmt PARAMS ((void));
1167 extern void genrtl_scope_stmt PARAMS ((tree));
1168 extern void genrtl_switch_stmt PARAMS ((tree));
1169 extern void genrtl_case_label PARAMS ((tree));
1170 extern void genrtl_compound_stmt PARAMS ((tree));
1171 extern void genrtl_asm_stmt PARAMS ((tree, tree,
1174 extern void genrtl_decl_cleanup PARAMS ((tree));
1175 extern int stmts_are_full_exprs_p PARAMS ((void));
1176 extern int anon_aggr_type_p PARAMS ((tree));
1178 /* For a VAR_DECL that is an anonymous union, these are the various
1179 sub-variables that make up the anonymous union. */
1180 #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
1182 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
1183 #define DECL_C_BIT_FIELD(NODE) \
1184 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
1185 #define SET_DECL_C_BIT_FIELD(NODE) \
1186 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
1187 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
1188 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
1190 /* In a VAR_DECL, nonzero if the decl is a register variable with
1191 an explicit asm specification. */
1192 #define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL))
1194 extern void emit_local_var PARAMS ((tree));
1195 extern void make_rtl_for_local_static PARAMS ((tree));
1196 extern tree expand_cond PARAMS ((tree));
1197 extern tree c_expand_return PARAMS ((tree));
1198 extern tree do_case PARAMS ((tree, tree));
1199 extern tree build_stmt PARAMS ((enum tree_code, ...));
1200 extern tree build_case_label PARAMS ((tree, tree, tree));
1201 extern tree build_continue_stmt PARAMS ((void));
1202 extern tree build_break_stmt PARAMS ((void));
1203 extern tree build_return_stmt PARAMS ((tree));
1205 #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE)
1207 /* Used by the C++ frontend to mark the block around the member
1208 initializers and cleanups. */
1209 #define COMPOUND_STMT_BODY_BLOCK(NODE) TREE_LANG_FLAG_3 (NODE)
1211 extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int));
1213 /* These functions must be defined by each front-end which implements
1214 a variant of the C language. They are used in c-common.c. */
1216 extern tree build_unary_op PARAMS ((enum tree_code,
1218 extern tree build_binary_op PARAMS ((enum tree_code,
1220 extern int lvalue_p PARAMS ((tree));
1221 extern tree default_conversion PARAMS ((tree));
1223 /* Given two integer or real types, return the type for their sum.
1224 Given two compatible ANSI C types, returns the merged type. */
1226 extern tree common_type PARAMS ((tree, tree));
1228 extern tree expand_tree_builtin PARAMS ((tree, tree, tree));
1230 extern tree decl_constant_value PARAMS ((tree));
1232 /* Handle increment and decrement of boolean types. */
1233 extern tree boolean_increment PARAMS ((enum tree_code,
1236 /* Hook currently used only by the C++ front end to reset internal state
1237 after entering or leaving a header file. */
1238 extern void extract_interface_info PARAMS ((void));
1240 extern int case_compare PARAMS ((splay_tree_key,
1243 extern tree c_add_case_label PARAMS ((splay_tree,
1247 extern tree build_function_call PARAMS ((tree, tree));
1249 extern tree finish_label_address_expr PARAMS ((tree));
1251 /* Same function prototype, but the C and C++ front ends have
1252 different implementations. Used in c-common.c. */
1253 extern tree lookup_label PARAMS ((tree));
1255 extern rtx c_expand_expr PARAMS ((tree, rtx,
1259 extern int c_safe_from_p PARAMS ((rtx, tree));
1261 extern int c_staticp PARAMS ((tree));
1263 extern int c_common_unsafe_for_reeval PARAMS ((tree));
1265 extern void init_c_lex PARAMS ((void));
1267 extern void c_cpp_builtins PARAMS ((cpp_reader *));
1269 /* Positive if an implicit `extern "C"' scope has just been entered;
1270 negative if such a scope has just been exited. */
1271 extern int pending_lang_change;
1273 /* Information recorded about each file examined during compilation. */
1277 int time; /* Time spent in the file. */
1278 short interface_only; /* Flags - used only by C++ */
1279 short interface_unknown;
1282 struct c_fileinfo *get_fileinfo PARAMS ((const char *));
1283 extern void dump_time_statistics PARAMS ((void));
1285 extern bool c_dump_tree PARAMS ((void *, tree));
1287 extern void pch_init PARAMS ((void));
1288 extern int c_common_valid_pch PARAMS ((cpp_reader *pfile,
1291 extern void c_common_read_pch PARAMS ((cpp_reader *pfile,
1295 extern void c_common_write_pch PARAMS ((void));
1296 extern void builtin_define_with_value PARAMS ((const char *,
1297 const char *, int));
1298 extern void c_stddef_cpp_builtins PARAMS ((void));
1299 extern void fe_file_change PARAMS ((const struct line_map *));
1301 /* In c-ppoutput.c */
1302 extern void init_pp_output PARAMS ((FILE *));
1303 extern void preprocess_file PARAMS ((cpp_reader *));
1304 extern void pp_file_change PARAMS ((const struct line_map *));
1306 #endif /* ! GCC_C_COMMON_H */