[thirdparty/gcc.git] / gcc / c-tree.h

/* Definitions for C parsing and type checking.
   Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
   1999, 2000, 2001, 2002 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

#ifndef GCC_C_TREE_H
#define GCC_C_TREE_H

#include "c-common.h"

/* Language-dependent contents of an identifier.  */

/* The limbo_value is used for block level extern declarations, which need
   to be type checked against subsequent extern declarations.  They can't
   be referenced after they fall out of scope, so they can't be global.

   The rid_code field is used for keywords.  It is in all
   lang_identifier nodes, because some keywords are only special in a
   particular context.  */

struct lang_identifier
{
  struct c_common_identifier ignore;
  tree global_value, local_value, label_value, implicit_decl;
  tree error_locus, limbo_value;
};

/* Language-specific declaration information.  */

struct lang_decl
{
  struct c_lang_decl base;
  /* The return types and parameter types may have variable size.
     This is a list of any SAVE_EXPRs that need to be evaluated to
     compute those sizes.  */
  tree pending_sizes;
};

/* Macros for access to language-specific slots in an identifier.  */
/* Each of these slots contains a DECL node or null.  */

/* This represents the value which the identifier has in the
   file-scope namespace.  */
#define IDENTIFIER_GLOBAL_VALUE(NODE)	\
  (((struct lang_identifier *) (NODE))->global_value)
/* This represents the value which the identifier has in the current
   scope.  */
#define IDENTIFIER_LOCAL_VALUE(NODE)	\
  (((struct lang_identifier *) (NODE))->local_value)
/* This represents the value which the identifier has as a label in
   the current label scope.  */
#define IDENTIFIER_LABEL_VALUE(NODE)	\
  (((struct lang_identifier *) (NODE))->label_value)
/* This records the extern decl of this identifier, if it has had one
   at any point in this compilation.  */
#define IDENTIFIER_LIMBO_VALUE(NODE)	\
  (((struct lang_identifier *) (NODE))->limbo_value)
/* This records the implicit function decl of this identifier, if it
   has had one at any point in this compilation.  */
#define IDENTIFIER_IMPLICIT_DECL(NODE)	\
  (((struct lang_identifier *) (NODE))->implicit_decl)
/* This is the last function in which we printed an "undefined variable"
   message for this identifier.  Value is a FUNCTION_DECL or null.  */
#define IDENTIFIER_ERROR_LOCUS(NODE)	\
  (((struct lang_identifier *) (NODE))->error_locus)

/* In identifiers, C uses the following fields in a special way:
   TREE_PUBLIC        to record that there was a previous local extern decl.
   TREE_USED          to record that such a decl was used.
   TREE_ADDRESSABLE   to record that the address of such a decl was used.  */

/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only.  */
#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)

/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile.  */
#define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)

/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
   nonzero if the definition of the type has already started.  */
#define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)

/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
   keyword.  C_RID_CODE (node) is then the RID_* value of the keyword,
   and C_RID_YYCODE is the token number wanted by Yacc.  */
#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)

/* This function was declared inline.  This flag controls the linkage
   semantics of 'inline'; whether or not the function is inlined is
   controlled by DECL_INLINE.  */
#define DECL_DECLARED_INLINE_P(NODE) \
  (DECL_LANG_SPECIFIC (NODE)->base.declared_inline)

/* In a RECORD_TYPE, a sorted array of the fields of the type.  */
struct lang_type
{
  int len;
  tree elts[1];
};

/* Record whether a type or decl was written with nonconstant size.
   Note that TYPE_SIZE may have simplified to a constant.  */
#define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
#define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)

#if 0 /* Not used.  */
/* Record whether a decl for a function or function pointer has
   already been mentioned (in a warning) because it was called
   but didn't have a prototype.  */
#define C_MISSING_PROTOTYPE_WARNED(DECL) DECL_LANG_FLAG_2 (DECL)
#endif

/* Store a value in that field.  */
#define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \
  (TREE_COMPLEXITY (EXP) = (int) (CODE))

/* Record whether a typedef for type `int' was actually `signed int'.  */
#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)

/* For a FUNCTION_DECL, nonzero if it was defined without an explicit
   return type.  */
#define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)

/* Nonzero for a declaration of a built in function if there has been no
   occasion that would declare the function in ordinary C.
   Using the function draws a pedantic warning in this case.  */
#define C_DECL_ANTICIPATED(EXP) DECL_LANG_FLAG_3 (EXP)

/* For FUNCTION_TYPE, a hidden list of types of arguments.  The same as
   TYPE_ARG_TYPES for functions with prototypes, but created for functions
   without prototypes.  */
#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE)

\f
/* in c-lang.c and objc-act.c */
extern tree lookup_interface			PARAMS ((tree));
extern tree is_class_name			PARAMS ((tree));
extern void maybe_objc_check_decl		PARAMS ((tree));
extern void finish_file				PARAMS ((void));
extern int maybe_objc_comptypes                 PARAMS ((tree, tree, int));
extern tree maybe_building_objc_message_expr    PARAMS ((void));
extern int recognize_objc_keyword		PARAMS ((void));
extern tree lookup_objc_ivar			PARAMS ((tree));

\f
/* in c-parse.in */
extern void c_parse_init			PARAMS ((void));
extern void c_set_yydebug			PARAMS ((int));

/* in c-aux-info.c */
extern void gen_aux_info_record                 PARAMS ((tree, int, int, int));

/* in c-decl.c */
extern int global_bindings_p			PARAMS ((void));
extern int kept_level_p				PARAMS ((void));
extern tree getdecls				PARAMS ((void));
extern void pushlevel				PARAMS ((int));
extern tree poplevel				PARAMS ((int,int, int));
extern void insert_block			PARAMS ((tree));
extern void set_block				PARAMS ((tree));
extern tree pushdecl				PARAMS ((tree));

extern void c_insert_default_attributes		PARAMS ((tree));
extern void c_init_decl_processing		PARAMS ((void));
extern void c_dup_lang_specific_decl		PARAMS ((tree));
extern void c_print_identifier			PARAMS ((FILE *, tree, int));
extern void c_mark_tree				PARAMS ((tree));
extern tree build_array_declarator              PARAMS ((tree, tree, int, int));
extern tree build_enumerator                    PARAMS ((tree, tree));
extern int  c_decode_option                     PARAMS ((int, char **));
extern void c_mark_varargs                      PARAMS ((void));
extern void check_for_loop_decls                PARAMS ((void));
extern void clear_parm_order                    PARAMS ((void));
extern int  complete_array_type                 PARAMS ((tree, tree, int));
extern void declare_parm_level                  PARAMS ((int));
extern tree define_label                        PARAMS ((const char *, int,
							 tree));
extern void finish_decl                         PARAMS ((tree, tree, tree));
extern tree finish_enum                         PARAMS ((tree, tree, tree));
extern void finish_function                     PARAMS ((int, int));
extern tree finish_struct                       PARAMS ((tree, tree, tree));
extern tree get_parm_info                       PARAMS ((int));
extern tree grokfield                           PARAMS ((const char *, int, tree, tree, tree));
extern tree groktypename                        PARAMS ((tree));
extern tree groktypename_in_parm_context        PARAMS ((tree));
extern tree implicitly_declare                  PARAMS ((tree));
extern void implicit_decl_warning               PARAMS ((tree));
extern int  in_parm_level_p                     PARAMS ((void));
extern void keep_next_level                     PARAMS ((void));
extern tree lookup_name                         PARAMS ((tree));
extern tree lookup_name_current_level		PARAMS ((tree));
extern void parmlist_tags_warning               PARAMS ((void));
extern void pending_xref_error                  PARAMS ((void));
extern void c_mark_function_context             PARAMS ((struct function *));
extern void c_push_function_context             PARAMS ((struct function *));
extern void c_pop_function_context              PARAMS ((struct function *));
extern void pop_label_level                     PARAMS ((void));
extern void push_label_level                    PARAMS ((void));
extern void push_parm_decl                      PARAMS ((tree));
extern tree pushdecl_top_level                  PARAMS ((tree));
extern void pushtag                             PARAMS ((tree, tree));
extern tree set_array_declarator_type           PARAMS ((tree, tree, int));
extern tree shadow_label                        PARAMS ((tree));
extern void shadow_tag                          PARAMS ((tree));
extern void shadow_tag_warned                   PARAMS ((tree, int));
extern tree start_enum                          PARAMS ((tree));
extern int  start_function                      PARAMS ((tree, tree, tree));
extern tree start_decl                          PARAMS ((tree, tree, int,
							 tree));
extern tree start_struct                        PARAMS ((enum tree_code, tree));
extern void store_parm_decls                    PARAMS ((void));
extern tree xref_tag                            PARAMS ((enum tree_code, tree));
extern tree c_begin_compound_stmt               PARAMS ((void));
extern void c_expand_deferred_function          PARAMS ((tree));
extern void c_expand_decl_stmt                  PARAMS ((tree));


/* in c-objc-common.c */
extern int c_disregard_inline_limits		PARAMS ((tree));
extern int c_cannot_inline_tree_fn		PARAMS ((tree *));
extern const char *c_objc_common_init		PARAMS ((const char *));
extern int c_missing_noreturn_ok_p		PARAMS ((tree));
extern void c_objc_common_finish_file		PARAMS ((void));
extern int defer_fn				PARAMS ((tree));
extern bool c_warn_unused_global_decl		PARAMS ((tree));

#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P)		  \
  c_build_qualified_type ((TYPE),				  \
			  ((CONST_P) ? TYPE_QUAL_CONST : 0) |	  \
			  ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))

/* in c-typeck.c */
extern tree require_complete_type		PARAMS ((tree));
extern int comptypes				PARAMS ((tree, tree));
extern tree c_sizeof_nowarn			PARAMS ((tree));
extern tree c_size_in_bytes                     PARAMS ((tree));
extern bool c_mark_addressable			PARAMS ((tree));
extern void c_incomplete_type_error		PARAMS ((tree, tree));
extern tree c_type_promotes_to			PARAMS ((tree));
extern tree build_component_ref                 PARAMS ((tree, tree));
extern tree build_indirect_ref                  PARAMS ((tree, const char *));
extern tree build_array_ref                     PARAMS ((tree, tree));
extern tree build_external_ref			PARAMS ((tree, int));
extern tree parser_build_binary_op              PARAMS ((enum tree_code,
							 tree, tree));
extern void readonly_warning			PARAMS ((tree, const char *));
extern tree build_conditional_expr              PARAMS ((tree, tree, tree));
extern tree build_compound_expr                 PARAMS ((tree));
extern tree c_cast_expr				PARAMS ((tree, tree));
extern tree build_c_cast	                PARAMS ((tree, tree));
extern tree build_modify_expr                   PARAMS ((tree, enum tree_code,
							 tree));
extern void store_init_value                    PARAMS ((tree, tree));
extern void error_init				PARAMS ((const char *));
extern void pedwarn_init			PARAMS ((const char *));
extern void start_init				PARAMS ((tree, tree, int));
extern void finish_init				PARAMS ((void));
extern void really_start_incremental_init	PARAMS ((tree));
extern void push_init_level			PARAMS ((int));
extern tree pop_init_level			PARAMS ((int));
extern void set_init_index			PARAMS ((tree, tree));
extern void set_init_label			PARAMS ((tree));
extern void process_init_element		PARAMS ((tree));
extern tree build_compound_literal		PARAMS ((tree, tree));
extern void pedwarn_c99				PARAMS ((const char *, ...))
							ATTRIBUTE_PRINTF_1;
extern tree c_start_case                        PARAMS ((tree));
extern void c_finish_case                       PARAMS ((void));
extern tree simple_asm_stmt			PARAMS ((tree));
extern tree build_asm_stmt			PARAMS ((tree, tree, tree,
							 tree, tree));
extern tree c_convert_parm_for_inlining		PARAMS ((tree, tree, tree));

/* Set to 0 at beginning of a function definition, set to 1 if
   a return statement that specifies a return value is seen.  */

extern int current_function_returns_value;

/* Set to 0 at beginning of a function definition, set to 1 if
   a return statement with no argument is seen.  */

extern int current_function_returns_null;

/* Set to 0 at beginning of a function definition, set to 1 if
   a call to a noreturn function is seen.  */

extern int current_function_returns_abnormally;

/* Nonzero means the expression being parsed will never be evaluated.
   This is a count, since unevaluated expressions can nest.  */

extern int skip_evaluation;

/* Nonzero means `$' can be in an identifier.  */

extern int dollars_in_ident;

/* Nonzero means allow type mismatches in conditional expressions;
   just make their values `void'.  */

extern int flag_cond_mismatch;

/* Nonzero means don't recognize the keyword `asm'.  */

extern int flag_no_asm;

/* Nonzero means warn about implicit declarations.  */

extern int warn_implicit;

/* Nonzero means warn for all old-style non-prototype function decls.  */

extern int warn_strict_prototypes;

/* Nonzero means warn about multiple (redundant) decls for the same single
   variable or function.  */

extern int warn_redundant_decls;

/* Nonzero means warn about extern declarations of objects not at
   file-scope level and about *all* declarations of functions (whether
   extern or static) not at file-scope level.  Note that we exclude
   implicit function declarations.  To get warnings about those, use
   -Wimplicit.  */

extern int warn_nested_externs;

/* Nonzero means warn about pointer casts that can drop a type qualifier
   from the pointer target type.  */

extern int warn_cast_qual;

/* Nonzero means warn when casting a function call to a type that does
   not match the return type (e.g. (float)sqrt() or (anything*)malloc()
   when there is no previous declaration of sqrt or malloc.  */

extern int warn_bad_function_cast;

/* Warn about traditional constructs whose meanings changed in ANSI C.  */

extern int warn_traditional;

/* Warn about a subscript that has type char.  */

extern int warn_char_subscripts;

/* Warn if main is suspicious.  */

extern int warn_main;

/* Warn if initializer is not completely bracketed.  */

extern int warn_missing_braces;

/* Warn about comparison of signed and unsigned values.  */

extern int warn_sign_compare;

/* Warn about testing equality of floating point numbers.  */

extern int warn_float_equal;

/* Warn about multicharacter constants.  */

extern int warn_multichar;

/* Nonzero means we are reading code that came from a system header file.  */

extern int system_header_p;

/* Warn about implicit declarations.  1 = warning, 2 = error.  */
extern int mesg_implicit_function_declaration;

/* In c-decl.c */
extern void c_finish_incomplete_decl PARAMS ((tree));

extern tree static_ctors;
extern tree static_dtors;

#endif /* ! GCC_C_TREE_H */
Commit	Line	Data
40754343	1	/* Definitions for C parsing and type checking.
3c71940f	2	Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
a8086abf	3	1999, 2000, 2001, 2002 Free Software Foundation, Inc.
40754343	4
1322177d	5	This file is part of GCC.
40754343	6
1322177d LB	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.
40754343	11
1322177d LB	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.
40754343 RS	16
40754343 RS	17	You should have received a copy of the GNU General Public License
1322177d LB	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. */
40754343	21
88657302 RH	22	#ifndef GCC_C_TREE_H
88657302 RH	23	#define GCC_C_TREE_H
cf1c49cb	24
7f4edbcb BS	25	#include "c-common.h"
7f4edbcb BS	26
40754343 RS	27	/* Language-dependent contents of an identifier. */
40754343 RS	28
ff92a691 JW	29	/* The limbo_value is used for block level extern declarations, which need
ff92a691 JW	30	to be type checked against subsequent extern declarations. They can't
0e5921e8 ZW	31	be referenced after they fall out of scope, so they can't be global.
	32
	33	The rid_code field is used for keywords. It is in all
	34	lang_identifier nodes, because some keywords are only special in a
	35	particular context. */
ff92a691	36
40754343 RS	37	struct lang_identifier
40754343 RS	38	{
2a967f3d	39	struct c_common_identifier ignore;
40754343	40	tree global_value, local_value, label_value, implicit_decl;
f2a02c3a	41	tree error_locus, limbo_value;
40754343 RS	42	};
40754343 RS	43
1f731749	44	/* Language-specific declaration information. */
8f17b5c5 MM	45
	46	struct lang_decl
	47	{
	48	struct c_lang_decl base;
1f731749 MM	49	/* The return types and parameter types may have variable size.
	50	This is a list of any SAVE_EXPRs that need to be evaluated to
	51	compute those sizes. */
	52	tree pending_sizes;
8f17b5c5 MM	53	};
8f17b5c5 MM	54
40754343	55	/* Macros for access to language-specific slots in an identifier. */
db69cfcb	56	/* Each of these slots contains a DECL node or null. */
40754343	57
db69cfcb RS	58	/* This represents the value which the identifier has in the
db69cfcb RS	59	file-scope namespace. */
40754343	60	#define IDENTIFIER_GLOBAL_VALUE(NODE) \
0f41302f	61	(((struct lang_identifier *) (NODE))->global_value)
db69cfcb RS	62	/* This represents the value which the identifier has in the current
db69cfcb RS	63	scope. */
40754343	64	#define IDENTIFIER_LOCAL_VALUE(NODE) \
0f41302f	65	(((struct lang_identifier *) (NODE))->local_value)
db69cfcb RS	66	/* This represents the value which the identifier has as a label in
db69cfcb RS	67	the current label scope. */
40754343	68	#define IDENTIFIER_LABEL_VALUE(NODE) \
0f41302f	69	(((struct lang_identifier *) (NODE))->label_value)
db69cfcb RS	70	/* This records the extern decl of this identifier, if it has had one
db69cfcb RS	71	at any point in this compilation. */
f2a02c3a	72	#define IDENTIFIER_LIMBO_VALUE(NODE) \
0f41302f	73	(((struct lang_identifier *) (NODE))->limbo_value)
db69cfcb RS	74	/* This records the implicit function decl of this identifier, if it
db69cfcb RS	75	has had one at any point in this compilation. */
40754343	76	#define IDENTIFIER_IMPLICIT_DECL(NODE) \
0f41302f	77	(((struct lang_identifier *) (NODE))->implicit_decl)
db69cfcb RS	78	/* This is the last function in which we printed an "undefined variable"
db69cfcb RS	79	message for this identifier. Value is a FUNCTION_DECL or null. */
40754343	80	#define IDENTIFIER_ERROR_LOCUS(NODE) \
0f41302f	81	(((struct lang_identifier *) (NODE))->error_locus)
40754343 RS	82
	83	/* In identifiers, C uses the following fields in a special way:
	84	TREE_PUBLIC to record that there was a previous local extern decl.
	85	TREE_USED to record that such a decl was used.
	86	TREE_ADDRESSABLE to record that the address of such a decl was used. */
	87
40754343	88	/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
a8086abf	89	#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
40754343 RS	90
40754343 RS	91	/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
a8086abf	92	#define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
40754343 RS	93
	94	/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
	95	nonzero if the definition of the type has already started. */
a8086abf	96	#define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
40754343	97
0e5921e8 ZW	98	/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
	99	keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
	100	and C_RID_YYCODE is the token number wanted by Yacc. */
a8086abf	101	#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
0e5921e8	102
31ed8fea RH	103	/* This function was declared inline. This flag controls the linkage
	104	semantics of 'inline'; whether or not the function is inlined is
	105	controlled by DECL_INLINE. */
	106	#define DECL_DECLARED_INLINE_P(NODE) \
	107	(DECL_LANG_SPECIFIC (NODE)->base.declared_inline)
	108
40754343 RS	109	/* In a RECORD_TYPE, a sorted array of the fields of the type. */
	110	struct lang_type
	111	{
	112	int len;
	113	tree elts[1];
	114	};
	115
40754343 RS	116	/* Record whether a type or decl was written with nonconstant size.
40754343 RS	117	Note that TYPE_SIZE may have simplified to a constant. */
a8086abf GS	118	#define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE)
a8086abf GS	119	#define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE)
40754343	120
40754343 RS	121	#if 0 /* Not used. */
	122	/* Record whether a decl for a function or function pointer has
	123	already been mentioned (in a warning) because it was called
	124	but didn't have a prototype. */
a8086abf	125	#define C_MISSING_PROTOTYPE_WARNED(DECL) DECL_LANG_FLAG_2 (DECL)
40754343 RS	126	#endif
	127
	128	/* Store a value in that field. */
a8086abf GS	129	#define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \
a8086abf GS	130	(TREE_COMPLEXITY (EXP) = (int) (CODE))
40754343 RS	131
40754343 RS	132	/* Record whether a typedef for type `int' was actually `signed int'. */
a8086abf	133	#define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP)
40754343	134
5ce89b2e JM	135	/* For a FUNCTION_DECL, nonzero if it was defined without an explicit
	136	return type. */
	137	#define C_FUNCTION_IMPLICIT_INT(EXP) DECL_LANG_FLAG_1 (EXP)
	138
96735c06 RS	139	/* Nonzero for a declaration of a built in function if there has been no
	140	occasion that would declare the function in ordinary C.
	141	Using the function draws a pedantic warning in this case. */
a8086abf	142	#define C_DECL_ANTICIPATED(EXP) DECL_LANG_FLAG_3 (EXP)
96735c06	143
40754343 RS	144	/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
	145	TYPE_ARG_TYPES for functions with prototypes, but created for functions
	146	without prototypes. */
6d0a3f67	147	#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE)
4e28fa00	148
40754343	149	\f
bfb73556	150	/* in c-lang.c and objc-act.c */
6e090c76 KG	151	extern tree lookup_interface PARAMS ((tree));
	152	extern tree is_class_name PARAMS ((tree));
	153	extern void maybe_objc_check_decl PARAMS ((tree));
	154	extern void finish_file PARAMS ((void));
	155	extern int maybe_objc_comptypes PARAMS ((tree, tree, int));
	156	extern tree maybe_building_objc_message_expr PARAMS ((void));
6e090c76	157	extern int recognize_objc_keyword PARAMS ((void));
7e585d16	158	extern tree lookup_objc_ivar PARAMS ((tree));
0abc6a6a	159
7c57c798	160	\f
1526a060	161	/* in c-parse.in */
6e090c76	162	extern void c_parse_init PARAMS ((void));
5d69f816	163	extern void c_set_yydebug PARAMS ((int));
1526a060	164
7c57c798	165	/* in c-aux-info.c */
6e090c76	166	extern void gen_aux_info_record PARAMS ((tree, int, int, int));
40754343	167
7c57c798	168	/* in c-decl.c */
43577e6b NB	169	extern int global_bindings_p PARAMS ((void));
	170	extern int kept_level_p PARAMS ((void));
	171	extern tree getdecls PARAMS ((void));
	172	extern void pushlevel PARAMS ((int));
	173	extern tree poplevel PARAMS ((int,int, int));
	174	extern void insert_block PARAMS ((tree));
	175	extern void set_block PARAMS ((tree));
	176	extern tree pushdecl PARAMS ((tree));
	177
7ffb4fd2	178	extern void c_insert_default_attributes PARAMS ((tree));
f5e99456	179	extern void c_init_decl_processing PARAMS ((void));
63e1b1c4	180	extern void c_dup_lang_specific_decl PARAMS ((tree));
5d69f816	181	extern void c_print_identifier PARAMS ((FILE *, tree, int));
4f0ade92	182	extern void c_mark_tree PARAMS ((tree));
0e03329a	183	extern tree build_array_declarator PARAMS ((tree, tree, int, int));
6e090c76	184	extern tree build_enumerator PARAMS ((tree, tree));
6e090c76 KG	185	extern int c_decode_option PARAMS ((int, char **));
6e090c76 KG	186	extern void c_mark_varargs PARAMS ((void));
77c4d6c0	187	extern void check_for_loop_decls PARAMS ((void));
6e090c76	188	extern void clear_parm_order PARAMS ((void));
6e090c76 KG	189	extern int complete_array_type PARAMS ((tree, tree, int));
6e090c76 KG	190	extern void declare_parm_level PARAMS ((int));
3b304f5b ZW	191	extern tree define_label PARAMS ((const char *, int,
3b304f5b ZW	192	tree));
6e090c76	193	extern void finish_decl PARAMS ((tree, tree, tree));
6e090c76	194	extern tree finish_enum PARAMS ((tree, tree, tree));
619708cc	195	extern void finish_function PARAMS ((int, int));
6e090c76 KG	196	extern tree finish_struct PARAMS ((tree, tree, tree));
6e090c76 KG	197	extern tree get_parm_info PARAMS ((int));
6e090c76 KG	198	extern tree grokfield PARAMS ((const char *, int, tree, tree, tree));
	199	extern tree groktypename PARAMS ((tree));
	200	extern tree groktypename_in_parm_context PARAMS ((tree));
	201	extern tree implicitly_declare PARAMS ((tree));
111458f1	202	extern void implicit_decl_warning PARAMS ((tree));
6e090c76	203	extern int in_parm_level_p PARAMS ((void));
6e090c76	204	extern void keep_next_level PARAMS ((void));
6e090c76 KG	205	extern tree lookup_name PARAMS ((tree));
6e090c76 KG	206	extern tree lookup_name_current_level PARAMS ((tree));
6e090c76 KG	207	extern void parmlist_tags_warning PARAMS ((void));
6e090c76 KG	208	extern void pending_xref_error PARAMS ((void));
b03e38e1 NB	209	extern void c_mark_function_context PARAMS ((struct function *));
	210	extern void c_push_function_context PARAMS ((struct function *));
	211	extern void c_pop_function_context PARAMS ((struct function *));
6e090c76	212	extern void pop_label_level PARAMS ((void));
6e090c76 KG	213	extern void push_label_level PARAMS ((void));
6e090c76 KG	214	extern void push_parm_decl PARAMS ((tree));
6e090c76	215	extern tree pushdecl_top_level PARAMS ((tree));
6e090c76	216	extern void pushtag PARAMS ((tree, tree));
0e03329a	217	extern tree set_array_declarator_type PARAMS ((tree, tree, int));
6e090c76	218	extern tree shadow_label PARAMS ((tree));
6e090c76 KG	219	extern void shadow_tag PARAMS ((tree));
	220	extern void shadow_tag_warned PARAMS ((tree, int));
	221	extern tree start_enum PARAMS ((tree));
f7a4cec0	222	extern int start_function PARAMS ((tree, tree, tree));
6e090c76	223	extern tree start_decl PARAMS ((tree, tree, int,
f7a4cec0	224	tree));
6e090c76 KG	225	extern tree start_struct PARAMS ((enum tree_code, tree));
	226	extern void store_parm_decls PARAMS ((void));
	227	extern tree xref_tag PARAMS ((enum tree_code, tree));
8f17b5c5	228	extern tree c_begin_compound_stmt PARAMS ((void));
8b0e9a72	229	extern void c_expand_deferred_function PARAMS ((tree));
8f17b5c5	230	extern void c_expand_decl_stmt PARAMS ((tree));
7c57c798	231
f797f486 NP	232
	233	/* in c-objc-common.c */
	234	extern int c_disregard_inline_limits PARAMS ((tree));
	235	extern int c_cannot_inline_tree_fn PARAMS ((tree *));
	236	extern const char c_objc_common_init PARAMS ((const char ));
	237	extern int c_missing_noreturn_ok_p PARAMS ((tree));
	238	extern void c_objc_common_finish_file PARAMS ((void));
	239	extern int defer_fn PARAMS ((tree));
ef4f94ac	240	extern bool c_warn_unused_global_decl PARAMS ((tree));
f797f486 NP	241
	242	#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
	243	c_build_qualified_type ((TYPE), \
	244	((CONST_P) ? TYPE_QUAL_CONST : 0) \| \
	245	((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
	246
7c57c798	247	/* in c-typeck.c */
6e090c76	248	extern tree require_complete_type PARAMS ((tree));
6e090c76	249	extern int comptypes PARAMS ((tree, tree));
4a56401d	250	extern tree c_sizeof_nowarn PARAMS ((tree));
6e090c76	251	extern tree c_size_in_bytes PARAMS ((tree));
dffd7eb6	252	extern bool c_mark_addressable PARAMS ((tree));
7a228918	253	extern void c_incomplete_type_error PARAMS ((tree, tree));
ab393bf1	254	extern tree c_type_promotes_to PARAMS ((tree));
6e090c76 KG	255	extern tree build_component_ref PARAMS ((tree, tree));
	256	extern tree build_indirect_ref PARAMS ((tree, const char *));
	257	extern tree build_array_ref PARAMS ((tree, tree));
7e585d16	258	extern tree build_external_ref PARAMS ((tree, int));
6e090c76 KG	259	extern tree parser_build_binary_op PARAMS ((enum tree_code,
6e090c76 KG	260	tree, tree));
6e090c76	261	extern void readonly_warning PARAMS ((tree, const char *));
6e090c76 KG	262	extern tree build_conditional_expr PARAMS ((tree, tree, tree));
6e090c76 KG	263	extern tree build_compound_expr PARAMS ((tree));
15b732b2 NB	264	extern tree c_cast_expr PARAMS ((tree, tree));
15b732b2 NB	265	extern tree build_c_cast PARAMS ((tree, tree));
6e090c76 KG	266	extern tree build_modify_expr PARAMS ((tree, enum tree_code,
	267	tree));
	268	extern void store_init_value PARAMS ((tree, tree));
	269	extern void error_init PARAMS ((const char *));
	270	extern void pedwarn_init PARAMS ((const char *));
	271	extern void start_init PARAMS ((tree, tree, int));
	272	extern void finish_init PARAMS ((void));
	273	extern void really_start_incremental_init PARAMS ((tree));
	274	extern void push_init_level PARAMS ((int));
	275	extern tree pop_init_level PARAMS ((int));
	276	extern void set_init_index PARAMS ((tree, tree));
	277	extern void set_init_label PARAMS ((tree));
	278	extern void process_init_element PARAMS ((tree));
db3acfa5	279	extern tree build_compound_literal PARAMS ((tree, tree));
903f51d9 RH	280	extern void pedwarn_c99 PARAMS ((const char *, ...))
903f51d9 RH	281	ATTRIBUTE_PRINTF_1;
8f17b5c5 MM	282	extern tree c_start_case PARAMS ((tree));
8f17b5c5 MM	283	extern void c_finish_case PARAMS ((void));
15b732b2	284	extern tree simple_asm_stmt PARAMS ((tree));
64094f6a RH	285	extern tree build_asm_stmt PARAMS ((tree, tree, tree,
64094f6a RH	286	tree, tree));
f735a153	287	extern tree c_convert_parm_for_inlining PARAMS ((tree, tree, tree));
40754343 RS	288
	289	/* Set to 0 at beginning of a function definition, set to 1 if
	290	a return statement that specifies a return value is seen. */
	291
	292	extern int current_function_returns_value;
	293
	294	/* Set to 0 at beginning of a function definition, set to 1 if
	295	a return statement with no argument is seen. */
	296
	297	extern int current_function_returns_null;
	298
5ce89b2e JM	299	/* Set to 0 at beginning of a function definition, set to 1 if
	300	a call to a noreturn function is seen. */
	301
	302	extern int current_function_returns_abnormally;
	303
6bdd692c RK	304	/* Nonzero means the expression being parsed will never be evaluated.
	305	This is a count, since unevaluated expressions can nest. */
	306
	307	extern int skip_evaluation;
	308
40754343 RS	309	/* Nonzero means `$' can be in an identifier. */
	310
	311	extern int dollars_in_ident;
	312
	313	/* Nonzero means allow type mismatches in conditional expressions;
eebedaa5	314	just make their values `void'. */
40754343 RS	315
	316	extern int flag_cond_mismatch;
	317
	318	/* Nonzero means don't recognize the keyword `asm'. */
	319
	320	extern int flag_no_asm;
	321
40754343 RS	322	/* Nonzero means warn about implicit declarations. */
	323
	324	extern int warn_implicit;
	325
40754343 RS	326	/* Nonzero means warn for all old-style non-prototype function decls. */
	327
	328	extern int warn_strict_prototypes;
	329
	330	/* Nonzero means warn about multiple (redundant) decls for the same single
	331	variable or function. */
	332
	333	extern int warn_redundant_decls;
	334
	335	/* Nonzero means warn about extern declarations of objects not at
	336	file-scope level and about all declarations of functions (whether
	337	extern or static) not at file-scope level. Note that we exclude
	338	implicit function declarations. To get warnings about those, use
	339	-Wimplicit. */
	340
	341	extern int warn_nested_externs;
	342
	343	/* Nonzero means warn about pointer casts that can drop a type qualifier
	344	from the pointer target type. */
	345
	346	extern int warn_cast_qual;
	347
95572adf RK	348	/* Nonzero means warn when casting a function call to a type that does
	349	not match the return type (e.g. (float)sqrt() or (anything*)malloc()
	350	when there is no previous declaration of sqrt or malloc. */
	351
	352	extern int warn_bad_function_cast;
	353
40754343 RS	354	/* Warn about traditional constructs whose meanings changed in ANSI C. */
	355
	356	extern int warn_traditional;
	357
40754343 RS	358	/* Warn about a subscript that has type char. */
	359
	360	extern int warn_char_subscripts;
	361
19eb1ad7	362	/* Warn if main is suspicious. */
92fce8f5 RK	363
	364	extern int warn_main;
	365
83091176 RS	366	/* Warn if initializer is not completely bracketed. */
	367
	368	extern int warn_missing_braces;
	369
d51f9363 JM	370	/* Warn about comparison of signed and unsigned values. */
d51f9363 JM	371
ab684785	372	extern int warn_sign_compare;
d51f9363	373
19eb1ad7	374	/* Warn about testing equality of floating point numbers. */
b843d210 DZ	375
	376	extern int warn_float_equal;
	377
4a870dba JM	378	/* Warn about multicharacter constants. */
	379
	380	extern int warn_multichar;
	381
40754343 RS	382	/* Nonzero means we are reading code that came from a system header file. */
	383
	384	extern int system_header_p;
7c57c798	385
111458f1 ZW	386	/* Warn about implicit declarations. 1 = warning, 2 = error. */
	387	extern int mesg_implicit_function_declaration;
	388
0bb0a00b	389	/* In c-decl.c */
48a7a235	390	extern void c_finish_incomplete_decl PARAMS ((tree));
0bb0a00b	391
3b27886e NB	392	extern tree static_ctors;
	393	extern tree static_dtors;
	394
88657302	395	#endif /* ! GCC_C_TREE_H */