/* Definitions for C parsing and type checking.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
struct lang_decl GTY(())
{
- /* 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;
+ char dummy;
};
/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
/* In an ENUMERAL_TYPE, the min and max values. */
tree enum_min;
tree enum_max;
+ /* In a RECORD_TYPE, information specific to Objective-C, such
+ as a list of adopted protocols or a pointer to a corresponding
+ @interface. See objc/objc-act.h for details. */
+ tree objc_info;
};
/* Record whether a type or decl was written with nonconstant size.
/* The value of the expression. */
tree value;
/* Record the original binary operator of an expression, which may
- have been changed by fold, STRING_CST for unparenthesised string
+ have been changed by fold, STRING_CST for unparenthesized string
constants, or ERROR_MARK for other expressions (including
parenthesized expressions). */
enum tree_code original_code;
};
+/* A kind of type specifier. Note that this information is currently
+ only used to distinguish tag definitions, tag references and typeof
+ uses. */
+enum c_typespec_kind {
+ /* A reserved keyword type specifier. */
+ ctsk_resword,
+ /* A reference to a tag, previously declared, such as "struct foo".
+ This includes where the previous declaration was as a different
+ kind of tag, in which case this is only valid if shadowing that
+ tag in an inner scope. */
+ ctsk_tagref,
+ /* A reference to a tag, not previously declared in a visible
+ scope. */
+ ctsk_tagfirstref,
+ /* A definition of a tag such as "struct foo { int a; }". */
+ ctsk_tagdef,
+ /* A typedef name. */
+ ctsk_typedef,
+ /* An ObjC-specific kind of type specifier. */
+ ctsk_objc,
+ /* A typeof specifier. */
+ ctsk_typeof
+};
+
+/* A type specifier: this structure is created in the parser and
+ passed to declspecs_add_type only. */
+struct c_typespec {
+ /* What kind of type specifier this is. */
+ enum c_typespec_kind kind;
+ /* The specifier itself. */
+ tree spec;
+};
+
/* A storage class specifier. */
enum c_storage_class {
csc_none,
csc_typedef
};
+/* A type specifier keyword "void", "_Bool", "char", "int", "float",
+ "double", or none of these. */
+enum c_typespec_keyword {
+ cts_none,
+ cts_void,
+ cts_bool,
+ cts_char,
+ cts_int,
+ cts_float,
+ cts_double
+};
+
/* A sequence of declaration specifiers in C. */
struct c_declspecs {
- /* The type specified, not reflecting modifiers such as "short" and
- "unsigned", or NULL_TREE if none. */
+ /* The type specified, if a single type specifier such as a struct,
+ union or enum specifier, typedef name or typeof specifies the
+ whole type, or NULL_TREE if none or a keyword such as "void" or
+ "char" is used. Does not include qualifiers. */
tree type;
/* The attributes from a typedef decl. */
tree decl_attr;
NULL; attributes (possibly from multiple lists) will be passed
separately. */
tree attrs;
- /* The modifier bits present. */
- int specbits;
+ /* Any type specifier keyword used such as "int", not reflecting
+ modifiers such as "short", or cts_none if none. */
+ enum c_typespec_keyword typespec_word;
/* The storage class specifier, or csc_none if none. */
enum c_storage_class storage_class;
+ /* Whether any declaration specifiers have been seen at all. */
+ BOOL_BITFIELD declspecs_seen_p : 1;
+ /* Whether a type specifier has been seen. */
+ BOOL_BITFIELD type_seen_p : 1;
/* Whether something other than a storage class specifier or
attribute has been seen. This is used to warn for the
obsolescent usage of storage class specifiers other than at the
specifiers to be handled separately from storage class
specifiers.) */
BOOL_BITFIELD non_sc_seen_p : 1;
- /* Whether the type is specified by a typedef. */
+ /* Whether the type is specified by a typedef or typeof name. */
BOOL_BITFIELD typedef_p : 1;
- /* Whether the type is specified by a typedef whose type is
- explicitly "signed". */
- BOOL_BITFIELD typedef_signed_p : 1;
+ /* Whether a struct, union or enum type either had its content
+ defined by a type specifier in the list or was the first visible
+ declaration of its tag. */
+ BOOL_BITFIELD tag_defined_p : 1;
+ /* Whether the type is explicitly "signed" or specified by a typedef
+ whose type is explicitly "signed". */
+ BOOL_BITFIELD explicit_signed_p : 1;
/* Whether the specifiers include a deprecated typedef. */
BOOL_BITFIELD deprecated_p : 1;
- /* Whether "int" was explicitly specified. */
- BOOL_BITFIELD explicit_int_p : 1;
- /* Whether "char" was explicitly specified. */
- BOOL_BITFIELD explicit_char_p : 1;
+ /* Whether the type defaulted to "int" because there were no type
+ specifiers. */
+ BOOL_BITFIELD default_int_p;
+ /* Whether "long" was specified. */
+ BOOL_BITFIELD long_p : 1;
/* Whether "long" was specified more than once. */
BOOL_BITFIELD long_long_p : 1;
+ /* Whether "short" was specified. */
+ BOOL_BITFIELD short_p : 1;
+ /* Whether "signed" was specified. */
+ BOOL_BITFIELD signed_p : 1;
+ /* Whether "unsigned" was specified. */
+ BOOL_BITFIELD unsigned_p : 1;
+ /* Whether "complex" was specified. */
+ BOOL_BITFIELD complex_p : 1;
/* Whether "inline" was specified. */
BOOL_BITFIELD inline_p : 1;
/* Whether "__thread" was specified. */
BOOL_BITFIELD thread_p : 1;
+ /* Whether "const" was specified. */
+ BOOL_BITFIELD const_p : 1;
+ /* Whether "volatile" was specified. */
+ BOOL_BITFIELD volatile_p : 1;
+ /* Whether "restrict" was specified. */
+ BOOL_BITFIELD restrict_p : 1;
};
/* The various kinds of declarators in C. */
enum c_declarator_kind kind;
/* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
struct c_declarator *declarator;
+ location_t id_loc; /* Currently only set for cdk_id. */
union {
/* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract
declarator. */
struct {
/* The array dimension, or NULL for [] and [*]. */
tree dimen;
- /* The qualifiers (and attributes, currently ignored) inside []. */
- struct c_declspecs *quals;
+ /* The qualifiers inside []. */
+ int quals;
+ /* The attributes (currently ignored) inside []. */
+ tree attrs;
/* Whether [static] was used. */
BOOL_BITFIELD static_p : 1;
/* Whether [*] was used. */
BOOL_BITFIELD vla_unspec_p : 1;
} array;
/* For pointers, the qualifiers on the pointer type. */
- struct c_declspecs *pointer_quals;
+ int pointer_quals;
/* For attributes. */
tree attrs;
} u;
};
\f
-/* in c-parse.in */
+/* in c-parser.c */
extern void c_parse_init (void);
/* in c-aux-info.c */
extern void c_init_decl_processing (void);
extern void c_dup_lang_specific_decl (tree);
extern void c_print_identifier (FILE *, tree, int);
+extern int quals_from_declspecs (const struct c_declspecs *);
extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
bool, bool);
extern tree build_enumerator (tree, tree);
extern void mark_forward_parm_decls (void);
extern int complete_array_type (tree, tree, int);
extern void declare_parm_level (void);
-extern void undeclared_variable (tree);
+extern void undeclared_variable (tree, location_t);
extern tree declare_label (tree);
extern tree define_label (location_t, tree);
extern void finish_decl (tree, tree, tree);
extern void store_parm_decls (void);
extern void store_parm_decls_from (struct c_arg_info *);
extern tree xref_tag (enum tree_code, tree);
+extern struct c_typespec parser_xref_tag (enum tree_code, tree);
extern int c_expand_decl (tree);
extern struct c_parm *build_c_parm (struct c_declspecs *, tree,
struct c_declarator *);
struct c_declarator *);
extern struct c_declspecs *build_null_declspecs (void);
extern struct c_declspecs *declspecs_add_qual (struct c_declspecs *, tree);
-extern struct c_declspecs *declspecs_add_type (struct c_declspecs *, tree);
+extern struct c_declspecs *declspecs_add_type (struct c_declspecs *,
+ struct c_typespec);
extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree);
extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree);
+extern struct c_declspecs *finish_declspecs (struct c_declspecs *);
/* in c-objc-common.c */
extern int c_disregard_inline_limits (tree);
extern bool c_objc_common_init (void);
extern bool c_missing_noreturn_ok_p (tree);
extern tree c_objc_common_truthvalue_conversion (tree expr);
-extern int defer_fn (tree);
extern bool c_warn_unused_global_decl (tree);
extern void c_initialize_diagnostics (diagnostic_context *);
extern tree require_complete_type (tree);
extern int same_translation_unit_p (tree, tree);
extern int comptypes (tree, tree);
-extern tree c_size_in_bytes (tree);
extern bool c_mark_addressable (tree);
extern void c_incomplete_type_error (tree, tree);
extern tree c_type_promotes_to (tree);
extern tree build_component_ref (tree, tree);
extern tree build_indirect_ref (tree, const char *);
extern tree build_array_ref (tree, tree);
-extern tree build_external_ref (tree, int);
-extern void record_maybe_used_decl (tree);
+extern tree build_external_ref (tree, int, location_t);
extern void pop_maybe_used (bool);
extern struct c_expr c_expr_sizeof_expr (struct c_expr);
extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
struct c_expr);
-extern void readonly_error (tree, const char *);
extern tree build_conditional_expr (tree, tree, tree);
extern tree build_compound_expr (tree, tree);
extern tree c_cast_expr (struct c_type_name *, tree);
extern void set_init_label (tree);
extern void process_init_element (struct c_expr);
extern tree build_compound_literal (tree, tree);
-extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_PRINTF_1;
-extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_PRINTF_1;
extern tree c_start_case (tree);
extern void c_finish_case (tree);
extern tree build_asm_expr (tree, tree, tree, tree, bool);
diagnostic framework extensions, you must include this file before
toplev.h, not after. */
#define GCC_DIAG_STYLE __gcc_cdiag__
+#if GCC_VERSION >= 3005
+#define ATTRIBUTE_GCC_CDIAG(m, n) __attribute__ ((__format__ (GCC_DIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m)
+#else
+#define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m)
+#endif
+
+extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
+extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2);
#endif /* ! GCC_C_TREE_H */
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