555 lines
23 KiB
C
555 lines
23 KiB
C
/* Definitions for C parsing and type checking.
|
||
Copyright (C) 1987, 93, 94, 95, 97, 98, 1999 Free Software Foundation, Inc.
|
||
|
||
This file is part of GNU CC.
|
||
|
||
GNU CC 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.
|
||
|
||
GNU CC 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 GNU CC; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#ifndef _C_TREE_H
|
||
#define _C_TREE_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. */
|
||
|
||
struct lang_identifier
|
||
{
|
||
struct tree_identifier ignore;
|
||
tree global_value, local_value, label_value, implicit_decl;
|
||
tree error_locus, limbo_value;
|
||
};
|
||
|
||
/* 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. */
|
||
|
||
/* Nonzero means reject anything that ANSI standard C forbids. */
|
||
extern int pedantic;
|
||
|
||
/* 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)
|
||
|
||
/* C types are partitioned into three subsets: object, function, and
|
||
incomplete types. */
|
||
#define C_TYPE_OBJECT_P(type) \
|
||
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
|
||
|
||
#define C_TYPE_FUNCTION_P(type) \
|
||
(TREE_CODE (type) == FUNCTION_TYPE)
|
||
|
||
#define C_TYPE_INCOMPLETE_P(type) \
|
||
(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
|
||
|
||
/* For convenience we define a single macro to identify the class of
|
||
object or incomplete types. */
|
||
#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
|
||
(!C_TYPE_FUNCTION_P (type))
|
||
|
||
/* In a RECORD_TYPE, a sorted array of the fields of the type. */
|
||
struct lang_type
|
||
{
|
||
int len;
|
||
tree elts[1];
|
||
};
|
||
|
||
/* Mark which labels are explicitly declared.
|
||
These may be shadowed, and may be referenced from nested functions. */
|
||
#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
|
||
|
||
/* 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)
|
||
|
||
/* Record in each node resulting from a binary operator
|
||
what operator was specified for it. */
|
||
#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
|
||
|
||
#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)
|
||
|
||
/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
|
||
#define DECL_C_BIT_FIELD(NODE) DECL_LANG_FLAG_4 (NODE)
|
||
|
||
/* Nonzero if the type T promotes to itself.
|
||
ANSI C states explicitly the list of types that promote;
|
||
in particular, short promotes to int even if they have the same width. */
|
||
#define C_PROMOTING_INTEGER_TYPE_P(t) \
|
||
(TREE_CODE ((t)) == INTEGER_TYPE \
|
||
&& (TYPE_MAIN_VARIANT (t) == char_type_node \
|
||
|| TYPE_MAIN_VARIANT (t) == signed_char_type_node \
|
||
|| TYPE_MAIN_VARIANT (t) == unsigned_char_type_node \
|
||
|| TYPE_MAIN_VARIANT (t) == short_integer_type_node \
|
||
|| TYPE_MAIN_VARIANT (t) == short_unsigned_type_node))
|
||
|
||
/* In a VAR_DECL, means the variable is really an iterator. */
|
||
#define ITERATOR_P(D) (DECL_LANG_FLAG_4(D))
|
||
|
||
/* In a VAR_DECL for an iterator, means we are within
|
||
an explicit loop over that iterator. */
|
||
#define ITERATOR_BOUND_P(NODE) ((NODE)->common.readonly_flag)
|
||
|
||
/* in c-lang.c and objc-act.c */
|
||
extern tree lookup_interface PROTO((tree));
|
||
extern tree is_class_name PROTO((tree));
|
||
extern void maybe_objc_check_decl PROTO((tree));
|
||
extern void finish_file PROTO((void));
|
||
extern int maybe_objc_comptypes PROTO((tree, tree, int));
|
||
extern tree maybe_building_objc_message_expr PROTO((void));
|
||
extern tree maybe_objc_method_name PROTO((tree));
|
||
extern int recognize_objc_keyword PROTO((void));
|
||
extern tree build_objc_string PROTO((int, const char *));
|
||
|
||
/* in c-aux-info.c */
|
||
extern void gen_aux_info_record PROTO((tree, int, int, int));
|
||
|
||
/* in c-common.c */
|
||
extern void declare_function_name PROTO((void));
|
||
extern void decl_attributes PROTO((tree, tree, tree));
|
||
extern void init_function_format_info PROTO((void));
|
||
extern void check_function_format PROTO((tree, tree, tree));
|
||
extern int c_get_alias_set PROTO((tree));
|
||
extern void c_apply_type_quals_to_decl PROTO((int, tree));
|
||
/* Print an error message for invalid operands to arith operation CODE.
|
||
NOP_EXPR is used as a special case (see truthvalue_conversion). */
|
||
extern void binary_op_error PROTO((enum tree_code));
|
||
extern void c_expand_expr_stmt PROTO((tree));
|
||
extern void c_expand_start_cond PROTO((tree, int, int));
|
||
extern void c_expand_start_else PROTO((void));
|
||
extern void c_expand_end_cond PROTO((void));
|
||
/* Validate the expression after `case' and apply default promotions. */
|
||
extern tree check_case_value PROTO((tree));
|
||
/* Concatenate a list of STRING_CST nodes into one STRING_CST. */
|
||
extern tree combine_strings PROTO((tree));
|
||
extern void constant_expression_warning PROTO((tree));
|
||
extern tree convert_and_check PROTO((tree, tree));
|
||
extern void overflow_warning PROTO((tree));
|
||
extern void unsigned_conversion_warning PROTO((tree, tree));
|
||
/* Read the rest of the current #-directive line. */
|
||
#if USE_CPPLIB
|
||
extern char *get_directive_line PROTO((void));
|
||
#define GET_DIRECTIVE_LINE() get_directive_line ()
|
||
#else
|
||
extern char *get_directive_line PROTO((FILE *));
|
||
#define GET_DIRECTIVE_LINE() get_directive_line (finput)
|
||
#endif
|
||
|
||
/* Subroutine of build_binary_op, used for comparison operations.
|
||
See if the operands have both been converted from subword integer types
|
||
and, if so, perhaps change them both back to their original type. */
|
||
extern tree shorten_compare PROTO((tree *, tree *, tree *, enum tree_code *));
|
||
/* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
|
||
or validate its data type for an `if' or `while' statement or ?..: exp. */
|
||
extern tree truthvalue_conversion PROTO((tree));
|
||
extern tree type_for_mode PROTO((enum machine_mode, int));
|
||
extern tree type_for_size PROTO((unsigned, int));
|
||
|
||
/* in c-convert.c */
|
||
extern tree convert PROTO((tree, tree));
|
||
|
||
/* in c-decl.c */
|
||
/* Standard named or nameless data types of the C compiler. */
|
||
extern tree char_array_type_node;
|
||
extern tree char_type_node;
|
||
extern tree const_ptr_type_node;
|
||
extern tree const_string_type_node;
|
||
extern tree default_function_type;
|
||
extern tree double_ftype_double;
|
||
extern tree double_ftype_double_double;
|
||
extern tree double_type_node;
|
||
extern tree float_type_node;
|
||
#if HOST_BITS_PER_WIDE_INT >= 64
|
||
extern tree intTI_type_node;
|
||
#endif
|
||
extern tree intDI_type_node;
|
||
extern tree intHI_type_node;
|
||
extern tree intQI_type_node;
|
||
extern tree intSI_type_node;
|
||
extern tree int_array_type_node;
|
||
extern tree int_ftype_cptr_cptr_sizet;
|
||
extern tree int_ftype_int;
|
||
extern tree int_ftype_ptr_ptr_int;
|
||
extern tree int_ftype_string_string;
|
||
extern tree integer_type_node;
|
||
extern tree long_double_type_node;
|
||
extern tree long_ftype_long;
|
||
extern tree long_integer_type_node;
|
||
extern tree long_long_integer_type_node;
|
||
extern tree long_long_unsigned_type_node;
|
||
extern tree long_unsigned_type_node;
|
||
extern tree complex_integer_type_node;
|
||
extern tree complex_float_type_node;
|
||
extern tree complex_double_type_node;
|
||
extern tree complex_long_double_type_node;
|
||
extern tree ptr_type_node;
|
||
extern tree ptrdiff_type_node;
|
||
extern tree short_integer_type_node;
|
||
extern tree short_unsigned_type_node;
|
||
extern tree signed_char_type_node;
|
||
extern tree signed_wchar_type_node;
|
||
extern tree string_ftype_ptr_ptr;
|
||
extern tree string_type_node;
|
||
extern tree unsigned_char_type_node;
|
||
#if HOST_BITS_PER_WIDE_INT >= 64
|
||
extern tree unsigned_intTI_type_node;
|
||
#endif
|
||
extern tree unsigned_intDI_type_node;
|
||
extern tree unsigned_intHI_type_node;
|
||
extern tree unsigned_intQI_type_node;
|
||
extern tree unsigned_intSI_type_node;
|
||
extern tree unsigned_type_node;
|
||
extern tree unsigned_wchar_type_node;
|
||
extern tree void_ftype_ptr_int_int;
|
||
extern tree void_ftype_ptr_ptr_int;
|
||
extern tree void_type_node;
|
||
extern tree wchar_array_type_node;
|
||
extern tree wchar_type_node;
|
||
extern tree boolean_type_node;
|
||
extern tree boolean_true_node;
|
||
extern tree boolean_false_node;
|
||
|
||
extern tree build_enumerator PROTO((tree, tree));
|
||
/* Declare a predefined function. Return the declaration. */
|
||
extern tree builtin_function PROTO((const char *, tree, enum built_in_function function_, const char *));
|
||
/* Add qualifiers to a type, in the fashion for C. */
|
||
extern tree c_build_qualified_type PROTO((tree, int));
|
||
#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 PROTO((int, char **));
|
||
extern void c_mark_varargs PROTO((void));
|
||
extern tree check_identifier PROTO((tree, tree));
|
||
extern void clear_parm_order PROTO((void));
|
||
extern tree combine_parm_decls PROTO((tree, tree, int));
|
||
extern int complete_array_type PROTO((tree, tree, int));
|
||
extern void declare_parm_level PROTO((int));
|
||
extern tree define_label PROTO((char *, int, tree));
|
||
extern void delete_block PROTO((tree));
|
||
extern void finish_decl PROTO((tree, tree, tree));
|
||
extern void finish_decl_top_level PROTO((tree, tree, tree));
|
||
extern tree finish_enum PROTO((tree, tree, tree));
|
||
extern void finish_function PROTO((int));
|
||
extern tree finish_struct PROTO((tree, tree, tree));
|
||
extern tree get_parm_info PROTO((int));
|
||
extern tree getdecls PROTO((void));
|
||
extern tree gettags PROTO((void));
|
||
extern int global_bindings_p PROTO((void));
|
||
extern tree grokfield PROTO((const char *, int, tree, tree, tree));
|
||
extern tree groktypename PROTO((tree));
|
||
extern tree groktypename_in_parm_context PROTO((tree));
|
||
extern tree implicitly_declare PROTO((tree));
|
||
extern int in_parm_level_p PROTO((void));
|
||
extern void init_decl_processing PROTO((void));
|
||
extern void insert_block PROTO((tree));
|
||
extern void keep_next_level PROTO((void));
|
||
extern int kept_level_p PROTO((void));
|
||
extern tree lookup_label PROTO((tree));
|
||
extern tree lookup_name PROTO((tree));
|
||
extern tree lookup_name_current_level PROTO((tree));
|
||
extern tree lookup_name_current_level_global PROTO((tree));
|
||
extern tree maybe_build_cleanup PROTO((tree));
|
||
extern void parmlist_tags_warning PROTO((void));
|
||
extern void pending_xref_error PROTO((void));
|
||
extern void pop_c_function_context PROTO((void));
|
||
extern void pop_label_level PROTO((void));
|
||
extern tree poplevel PROTO((int, int, int));
|
||
extern void print_lang_decl PROTO((FILE *, tree, int));
|
||
extern void print_lang_identifier PROTO((FILE *, tree, int));
|
||
extern void print_lang_type PROTO((FILE *, tree, int));
|
||
extern void push_c_function_context PROTO((void));
|
||
extern void push_label_level PROTO((void));
|
||
extern void push_parm_decl PROTO((tree));
|
||
extern tree pushdecl PROTO((tree));
|
||
extern tree pushdecl_top_level PROTO((tree));
|
||
extern void pushlevel PROTO((int));
|
||
extern void pushtag PROTO((tree, tree));
|
||
extern void set_block PROTO((tree));
|
||
extern tree shadow_label PROTO((tree));
|
||
extern void shadow_record_fields PROTO((tree));
|
||
extern void shadow_tag PROTO((tree));
|
||
extern void shadow_tag_warned PROTO((tree, int));
|
||
extern tree start_enum PROTO((tree));
|
||
extern int start_function PROTO((tree, tree, tree,
|
||
tree, int));
|
||
extern tree start_decl PROTO((tree, tree, int,
|
||
tree, tree));
|
||
extern tree start_struct PROTO((enum tree_code, tree));
|
||
extern void store_parm_decls PROTO((void));
|
||
extern tree xref_tag PROTO((enum tree_code, tree));
|
||
|
||
/* in c-typeck.c */
|
||
extern tree require_complete_type PROTO((tree));
|
||
extern void incomplete_type_error PROTO((tree, tree));
|
||
/* Given two integer or real types, return the type for their sum.
|
||
Given two compatible ANSI C types, returns the merged type. */
|
||
extern tree common_type PROTO((tree, tree));
|
||
extern int comptypes PROTO((tree, tree));
|
||
extern int self_promoting_args_p PROTO((tree));
|
||
extern tree c_sizeof PROTO((tree));
|
||
extern tree c_sizeof_nowarn PROTO((tree));
|
||
extern tree c_size_in_bytes PROTO((tree));
|
||
extern tree c_alignof PROTO((tree));
|
||
extern tree c_alignof_expr PROTO((tree));
|
||
extern tree default_conversion PROTO((tree));
|
||
extern tree build_component_ref PROTO((tree, tree));
|
||
extern tree build_indirect_ref PROTO((tree, const char *));
|
||
extern tree build_array_ref PROTO((tree, tree));
|
||
extern tree build_function_call PROTO((tree, tree));
|
||
extern tree parser_build_binary_op PROTO((enum tree_code,
|
||
tree, tree));
|
||
extern tree build_binary_op PROTO((enum tree_code,
|
||
tree, tree, int));
|
||
extern tree build_unary_op PROTO((enum tree_code,
|
||
tree, int));
|
||
extern int lvalue_p PROTO((tree));
|
||
extern int lvalue_or_else PROTO((tree, const char *));
|
||
extern void readonly_warning PROTO((tree, const char *));
|
||
extern int mark_addressable PROTO((tree));
|
||
extern tree build_conditional_expr PROTO((tree, tree, tree));
|
||
extern tree build_compound_expr PROTO((tree));
|
||
extern tree build_c_cast PROTO((tree, tree));
|
||
extern tree build_modify_expr PROTO((tree, enum tree_code,
|
||
tree));
|
||
extern tree initializer_constant_valid_p PROTO((tree, tree));
|
||
extern void store_init_value PROTO((tree, tree));
|
||
extern void error_init PROTO((const char *));
|
||
extern void pedwarn_init PROTO((const char *));
|
||
extern void start_init PROTO((tree, tree, int));
|
||
extern void finish_init PROTO((void));
|
||
extern void really_start_incremental_init PROTO((tree));
|
||
extern void push_init_level PROTO((int));
|
||
extern tree pop_init_level PROTO((int));
|
||
extern void set_init_index PROTO((tree, tree));
|
||
extern void set_init_label PROTO((tree));
|
||
extern void process_init_element PROTO((tree));
|
||
extern void c_expand_asm_operands PROTO((tree, tree, tree, tree,
|
||
int, char *, int));
|
||
extern void c_expand_return PROTO((tree));
|
||
extern tree c_expand_start_case PROTO((tree));
|
||
|
||
/* in c-iterate.c */
|
||
extern void init_iterators PROTO((void));
|
||
extern void iterator_expand PROTO((tree));
|
||
extern void iterator_for_loop_start PROTO((tree));
|
||
extern void iterator_for_loop_end PROTO((tree));
|
||
extern void iterator_for_loop_record PROTO((tree));
|
||
extern void push_iterator_stack PROTO((void));
|
||
extern void pop_iterator_stack PROTO((void));
|
||
|
||
/* 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 environment is hosted (i.e., not freestanding) */
|
||
|
||
extern int flag_hosted;
|
||
|
||
/* Nonzero means warn about implicit declarations. */
|
||
|
||
extern int warn_implicit;
|
||
|
||
/* Nonzero means give string constants the type `const char *'
|
||
to get extra warnings from them. These warnings will be too numerous
|
||
to be useful, except in thoroughly ANSIfied programs. */
|
||
|
||
extern int flag_const_strings;
|
||
|
||
/* 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 functions which might be candidates for attribute noreturn. */
|
||
|
||
extern int warn_missing_noreturn;
|
||
|
||
/* Warn about traditional constructs whose meanings changed in ANSI C. */
|
||
|
||
extern int warn_traditional;
|
||
|
||
/* Warn about *printf or *scanf format/argument anomalies. */
|
||
|
||
extern int warn_format;
|
||
|
||
/* Warn about a subscript that has type char. */
|
||
|
||
extern int warn_char_subscripts;
|
||
|
||
/* Warn if a type conversion is done that might have confusing results. */
|
||
|
||
extern int warn_conversion;
|
||
|
||
/* Warn if main is suspicious. */
|
||
|
||
extern int warn_main;
|
||
|
||
/* Nonzero means do some things the same way PCC does. */
|
||
|
||
extern int flag_traditional;
|
||
|
||
/* Nonzero means use the ISO C9x dialect of C. */
|
||
|
||
extern int flag_isoc9x;
|
||
|
||
/* Nonzero means to allow single precision math even if we're generally
|
||
being traditional. */
|
||
extern int flag_allow_single_precision;
|
||
|
||
/* Nonzero means warn about suggesting putting in ()'s. */
|
||
|
||
extern int warn_parentheses;
|
||
|
||
/* 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 multicharacter constants. */
|
||
|
||
extern int warn_multichar;
|
||
|
||
/* Warn about long long. */
|
||
|
||
extern int warn_long_long;
|
||
|
||
/* Nonzero means we are reading code that came from a system header file. */
|
||
|
||
extern int system_header_p;
|
||
|
||
/* Nonzero enables objc features. */
|
||
|
||
extern int doing_objc_thang;
|
||
|
||
/* In c-decl.c */
|
||
extern void finish_incomplete_decl PROTO((tree));
|
||
|
||
#endif /* not _C_TREE_H */
|