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

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

/* 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))

/* 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_NONCOPIED_PARTS (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 int yyparse_1				PARAMS ((void));

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

/* in c-decl.c */
extern tree build_array_declarator              PARAMS ((tree, tree, int, int));
extern tree build_enumerator                    PARAMS ((tree, 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))
extern int  c_decode_option                     PARAMS ((int, char **));
extern void c_mark_varargs                      PARAMS ((void));
extern void check_for_loop_decls                PARAMS ((void));
extern tree check_identifier                    PARAMS ((tree, tree));
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 delete_block                        PARAMS ((tree));
extern void finish_decl                         PARAMS ((tree, tree, tree));
extern void finish_decl_top_level               PARAMS ((tree, tree, tree));
extern tree finish_enum                         PARAMS ((tree, tree, tree));
extern void finish_function                     PARAMS ((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 int  kept_level_p                        PARAMS ((void));
extern tree lookup_name                         PARAMS ((tree));
extern tree lookup_name_current_level		PARAMS ((tree));
extern tree lookup_name_current_level_global	PARAMS ((tree));
extern void parmlist_tags_warning               PARAMS ((void));
extern void pending_xref_error                  PARAMS ((void));
extern void mark_c_function_context             PARAMS ((struct function *));
extern void push_c_function_context             PARAMS ((struct function *));
extern void pop_c_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_record_fields                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_decl_stmt                  PARAMS ((tree));

/* in c-typeck.c */
extern tree require_complete_type		PARAMS ((tree));
extern int comptypes				PARAMS ((tree, tree));
extern tree c_sizeof                            PARAMS ((tree));
extern tree c_sizeof_nowarn                     PARAMS ((tree));
extern tree c_size_in_bytes                     PARAMS ((tree));
extern tree c_alignof				PARAMS ((tree));
extern tree c_alignof_expr			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 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));

/* 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;

/* 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 about sizeof (function) or addition/subtraction
   of function pointers.  */

extern int warn_pointer_arith;

/* 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;

/* Nonzero means to allow single precision math even if we're generally
   being traditional. */
extern int flag_allow_single_precision;

/* 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 finish_incomplete_decl PARAMS ((tree));

#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,
ae0ed63a	3	1999, 2000, 2001 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 RS	88	/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
	89	#define C_TYPE_FIELDS_READONLY(type) TREE_LANG_FLAG_1 (type)
	90
	91	/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
	92	#define C_TYPE_FIELDS_VOLATILE(type) TREE_LANG_FLAG_2 (type)
	93
	94	/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
	95	nonzero if the definition of the type has already started. */
	96	#define C_TYPE_BEING_DEFINED(type) TYPE_LANG_FLAG_0 (type)
	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. */
	101
	102	#define C_IS_RESERVED_WORD(id) TREE_LANG_FLAG_0 (id)
0e5921e8	103
40754343 RS	104	/* In a RECORD_TYPE, a sorted array of the fields of the type. */
	105	struct lang_type
	106	{
	107	int len;
	108	tree elts[1];
	109	};
	110
40754343 RS	111	/* Record whether a type or decl was written with nonconstant size.
	112	Note that TYPE_SIZE may have simplified to a constant. */
	113	#define C_TYPE_VARIABLE_SIZE(type) TYPE_LANG_FLAG_1 (type)
	114	#define C_DECL_VARIABLE_SIZE(type) DECL_LANG_FLAG_0 (type)
	115
40754343 RS	116	#if 0 /* Not used. */
	117	/* Record whether a decl for a function or function pointer has
	118	already been mentioned (in a warning) because it was called
	119	but didn't have a prototype. */
	120	#define C_MISSING_PROTOTYPE_WARNED(decl) DECL_LANG_FLAG_2(decl)
	121	#endif
	122
	123	/* Store a value in that field. */
	124	#define C_SET_EXP_ORIGINAL_CODE(exp, code) \
0f41302f	125	(TREE_COMPLEXITY (exp) = (int) (code))
40754343 RS	126
	127	/* Record whether a typedef for type `int' was actually `signed int'. */
	128	#define C_TYPEDEF_EXPLICITLY_SIGNED(exp) DECL_LANG_FLAG_1 ((exp))
	129
96735c06 RS	130	/* Nonzero for a declaration of a built in function if there has been no
	131	occasion that would declare the function in ordinary C.
	132	Using the function draws a pedantic warning in this case. */
	133	#define C_DECL_ANTICIPATED(exp) DECL_LANG_FLAG_3 ((exp))
	134
40754343 RS	135	/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
	136	TYPE_ARG_TYPES for functions with prototypes, but created for functions
	137	without prototypes. */
	138	#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_NONCOPIED_PARTS (NODE)
4e28fa00	139
40754343	140	\f
bfb73556	141	/* in c-lang.c and objc-act.c */
6e090c76 KG	142	extern tree lookup_interface PARAMS ((tree));
	143	extern tree is_class_name PARAMS ((tree));
	144	extern void maybe_objc_check_decl PARAMS ((tree));
	145	extern void finish_file PARAMS ((void));
	146	extern int maybe_objc_comptypes PARAMS ((tree, tree, int));
	147	extern tree maybe_building_objc_message_expr PARAMS ((void));
6e090c76	148	extern int recognize_objc_keyword PARAMS ((void));
7e585d16	149	extern tree lookup_objc_ivar PARAMS ((tree));
7c57c798	150	\f
1526a060	151	/* in c-parse.in */
6e090c76	152	extern void c_parse_init PARAMS ((void));
3aac38d7	153	extern int yyparse_1 PARAMS ((void));
1526a060	154
7c57c798	155	/* in c-aux-info.c */
6e090c76	156	extern void gen_aux_info_record PARAMS ((tree, int, int, int));
40754343	157
7c57c798	158	/* in c-decl.c */
0e03329a	159	extern tree build_array_declarator PARAMS ((tree, tree, int, int));
6e090c76	160	extern tree build_enumerator PARAMS ((tree, tree));
50e60bc3	161
3932261a MM	162	#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
	163	c_build_qualified_type (TYPE, \
	164	((CONST_P) ? TYPE_QUAL_CONST : 0) \| \
	165	((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
6e090c76 KG	166	extern int c_decode_option PARAMS ((int, char **));
6e090c76 KG	167	extern void c_mark_varargs PARAMS ((void));
77c4d6c0	168	extern void check_for_loop_decls PARAMS ((void));
6e090c76 KG	169	extern tree check_identifier PARAMS ((tree, tree));
6e090c76 KG	170	extern void clear_parm_order PARAMS ((void));
6e090c76 KG	171	extern int complete_array_type PARAMS ((tree, tree, int));
6e090c76 KG	172	extern void declare_parm_level PARAMS ((int));
3b304f5b ZW	173	extern tree define_label PARAMS ((const char *, int,
3b304f5b ZW	174	tree));
6e090c76 KG	175	extern void delete_block PARAMS ((tree));
	176	extern void finish_decl PARAMS ((tree, tree, tree));
	177	extern void finish_decl_top_level PARAMS ((tree, tree, tree));
	178	extern tree finish_enum PARAMS ((tree, tree, tree));
	179	extern void finish_function PARAMS ((int));
	180	extern tree finish_struct PARAMS ((tree, tree, tree));
	181	extern tree get_parm_info PARAMS ((int));
6e090c76 KG	182	extern tree grokfield PARAMS ((const char *, int, tree, tree, tree));
	183	extern tree groktypename PARAMS ((tree));
	184	extern tree groktypename_in_parm_context PARAMS ((tree));
	185	extern tree implicitly_declare PARAMS ((tree));
111458f1	186	extern void implicit_decl_warning PARAMS ((tree));
6e090c76	187	extern int in_parm_level_p PARAMS ((void));
6e090c76 KG	188	extern void keep_next_level PARAMS ((void));
6e090c76 KG	189	extern int kept_level_p PARAMS ((void));
6e090c76 KG	190	extern tree lookup_name PARAMS ((tree));
	191	extern tree lookup_name_current_level PARAMS ((tree));
	192	extern tree lookup_name_current_level_global PARAMS ((tree));
6e090c76 KG	193	extern void parmlist_tags_warning PARAMS ((void));
	194	extern void pending_xref_error PARAMS ((void));
	195	extern void mark_c_function_context PARAMS ((struct function *));
	196	extern void push_c_function_context PARAMS ((struct function *));
	197	extern void pop_c_function_context PARAMS ((struct function *));
	198	extern void pop_label_level PARAMS ((void));
6e090c76 KG	199	extern void push_label_level PARAMS ((void));
6e090c76 KG	200	extern void push_parm_decl PARAMS ((tree));
6e090c76	201	extern tree pushdecl_top_level PARAMS ((tree));
6e090c76	202	extern void pushtag PARAMS ((tree, tree));
0e03329a	203	extern tree set_array_declarator_type PARAMS ((tree, tree, int));
6e090c76 KG	204	extern tree shadow_label PARAMS ((tree));
	205	extern void shadow_record_fields PARAMS ((tree));
	206	extern void shadow_tag PARAMS ((tree));
	207	extern void shadow_tag_warned PARAMS ((tree, int));
	208	extern tree start_enum PARAMS ((tree));
f7a4cec0	209	extern int start_function PARAMS ((tree, tree, tree));
6e090c76	210	extern tree start_decl PARAMS ((tree, tree, int,
f7a4cec0	211	tree));
6e090c76 KG	212	extern tree start_struct PARAMS ((enum tree_code, tree));
	213	extern void store_parm_decls PARAMS ((void));
	214	extern tree xref_tag PARAMS ((enum tree_code, tree));
8f17b5c5 MM	215	extern tree c_begin_compound_stmt PARAMS ((void));
8f17b5c5 MM	216	extern void c_expand_decl_stmt PARAMS ((tree));
7c57c798 RS	217
7c57c798 RS	218	/* in c-typeck.c */
6e090c76	219	extern tree require_complete_type PARAMS ((tree));
6e090c76 KG	220	extern int comptypes PARAMS ((tree, tree));
	221	extern tree c_sizeof PARAMS ((tree));
	222	extern tree c_sizeof_nowarn PARAMS ((tree));
	223	extern tree c_size_in_bytes PARAMS ((tree));
	224	extern tree c_alignof PARAMS ((tree));
	225	extern tree c_alignof_expr PARAMS ((tree));
6e090c76 KG	226	extern tree build_component_ref PARAMS ((tree, tree));
	227	extern tree build_indirect_ref PARAMS ((tree, const char *));
	228	extern tree build_array_ref PARAMS ((tree, tree));
7e585d16	229	extern tree build_external_ref PARAMS ((tree, int));
6e090c76 KG	230	extern tree parser_build_binary_op PARAMS ((enum tree_code,
6e090c76 KG	231	tree, tree));
6e090c76	232	extern void readonly_warning PARAMS ((tree, const char *));
6e090c76 KG	233	extern tree build_conditional_expr PARAMS ((tree, tree, tree));
6e090c76 KG	234	extern tree build_compound_expr PARAMS ((tree));
15b732b2 NB	235	extern tree c_cast_expr PARAMS ((tree, tree));
15b732b2 NB	236	extern tree build_c_cast PARAMS ((tree, tree));
6e090c76 KG	237	extern tree build_modify_expr PARAMS ((tree, enum tree_code,
	238	tree));
	239	extern void store_init_value PARAMS ((tree, tree));
	240	extern void error_init PARAMS ((const char *));
	241	extern void pedwarn_init PARAMS ((const char *));
	242	extern void start_init PARAMS ((tree, tree, int));
	243	extern void finish_init PARAMS ((void));
	244	extern void really_start_incremental_init PARAMS ((tree));
	245	extern void push_init_level PARAMS ((int));
	246	extern tree pop_init_level PARAMS ((int));
	247	extern void set_init_index PARAMS ((tree, tree));
	248	extern void set_init_label PARAMS ((tree));
	249	extern void process_init_element PARAMS ((tree));
903f51d9 RH	250	extern void pedwarn_c99 PARAMS ((const char *, ...))
903f51d9 RH	251	ATTRIBUTE_PRINTF_1;
8f17b5c5 MM	252	extern tree c_start_case PARAMS ((tree));
8f17b5c5 MM	253	extern void c_finish_case PARAMS ((void));
15b732b2	254	extern tree simple_asm_stmt PARAMS ((tree));
64094f6a RH	255	extern tree build_asm_stmt PARAMS ((tree, tree, tree,
64094f6a RH	256	tree, tree));
40754343 RS	257
	258	/* Set to 0 at beginning of a function definition, set to 1 if
	259	a return statement that specifies a return value is seen. */
	260
	261	extern int current_function_returns_value;
	262
	263	/* Set to 0 at beginning of a function definition, set to 1 if
	264	a return statement with no argument is seen. */
	265
	266	extern int current_function_returns_null;
	267
6bdd692c RK	268	/* Nonzero means the expression being parsed will never be evaluated.
	269	This is a count, since unevaluated expressions can nest. */
	270
	271	extern int skip_evaluation;
	272
40754343 RS	273	/* Nonzero means `$' can be in an identifier. */
	274
	275	extern int dollars_in_ident;
	276
	277	/* Nonzero means allow type mismatches in conditional expressions;
	278	just make their values `void'. */
	279
	280	extern int flag_cond_mismatch;
	281
	282	/* Nonzero means don't recognize the keyword `asm'. */
	283
	284	extern int flag_no_asm;
	285
40754343 RS	286	/* Nonzero means warn about implicit declarations. */
	287
	288	extern int warn_implicit;
	289
40754343 RS	290	/* Nonzero means warn about sizeof (function) or addition/subtraction
	291	of function pointers. */
	292
	293	extern int warn_pointer_arith;
	294
	295	/* Nonzero means warn for all old-style non-prototype function decls. */
	296
	297	extern int warn_strict_prototypes;
	298
	299	/* Nonzero means warn about multiple (redundant) decls for the same single
	300	variable or function. */
	301
	302	extern int warn_redundant_decls;
	303
	304	/* Nonzero means warn about extern declarations of objects not at
	305	file-scope level and about all declarations of functions (whether
	306	extern or static) not at file-scope level. Note that we exclude
	307	implicit function declarations. To get warnings about those, use
	308	-Wimplicit. */
	309
	310	extern int warn_nested_externs;
	311
	312	/* Nonzero means warn about pointer casts that can drop a type qualifier
	313	from the pointer target type. */
	314
	315	extern int warn_cast_qual;
	316
95572adf RK	317	/* Nonzero means warn when casting a function call to a type that does
	318	not match the return type (e.g. (float)sqrt() or (anything*)malloc()
	319	when there is no previous declaration of sqrt or malloc. */
	320
	321	extern int warn_bad_function_cast;
	322
40754343 RS	323	/* Warn about traditional constructs whose meanings changed in ANSI C. */
	324
	325	extern int warn_traditional;
	326
40754343 RS	327	/* Warn about a subscript that has type char. */
	328
	329	extern int warn_char_subscripts;
	330
92fce8f5 RK	331	/* Warn if main is suspicious. */
	332
	333	extern int warn_main;
	334
b3fe11b8 RS	335	/* Nonzero means to allow single precision math even if we're generally
	336	being traditional. */
	337	extern int flag_allow_single_precision;
	338
83091176 RS	339	/* Warn if initializer is not completely bracketed. */
	340
	341	extern int warn_missing_braces;
	342
d51f9363 JM	343	/* Warn about comparison of signed and unsigned values. */
d51f9363 JM	344
ab684785	345	extern int warn_sign_compare;
d51f9363	346
b843d210 DZ	347	/* Warn about testing equality of floating point numbers. */
	348
	349	extern int warn_float_equal;
	350
4a870dba JM	351	/* Warn about multicharacter constants. */
	352
	353	extern int warn_multichar;
	354
40754343 RS	355	/* Nonzero means we are reading code that came from a system header file. */
	356
	357	extern int system_header_p;
7c57c798	358
111458f1 ZW	359	/* Warn about implicit declarations. 1 = warning, 2 = error. */
	360	extern int mesg_implicit_function_declaration;
	361
0bb0a00b	362	/* In c-decl.c */
6e090c76	363	extern void finish_incomplete_decl PARAMS ((tree));
0bb0a00b	364
88657302	365	#endif /* ! GCC_C_TREE_H */