/* 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.
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. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#ifndef GCC_C_TREE_H
#define GCC_C_TREE_H
#include "c-common.h"
+#include "toplev.h"
#include "diagnostic.h"
/* struct lang_identifier is private to c-decl.c, but langhooks.c needs to
#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
(sizeof (struct c_common_identifier) + 3 * sizeof (void *))
-/* For gc purposes, return the most likely link for the longest chain. */
-#define C_LANG_TREE_NODE_CHAIN_NEXT(T) \
- ((union lang_tree_node *) \
- (TREE_CODE (T) == INTEGER_TYPE ? TYPE_NEXT_VARIANT (T) \
- : TREE_CODE (T) == COMPOUND_EXPR ? TREE_OPERAND (T, 1) \
- : TREE_CHAIN (T)))
-
/* Language-specific declaration information. */
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.
/* For FUNCTION_DECLs, evaluates true if the decl is built-in but has
been declared. */
-#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_3 (EXP)
+#define C_DECL_DECLARED_BUILTIN(EXP) \
+ DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (EXP))
+
+/* For FUNCTION_DECLs, evaluates true if the decl is built-in, has a
+ built-in prototype and does not have a non-built-in prototype. */
+#define C_DECL_BUILTIN_PROTOTYPE(EXP) \
+ DECL_LANG_FLAG_6 (FUNCTION_DECL_CHECK (EXP))
/* Record whether a decl was declared register. This is strictly a
front-end flag, whereas DECL_REGISTER is used for code generation;
unevaluated operand of sizeof / typeof / alignof. This is only
used for functions declared static but not defined, though outside
sizeof and typeof it is set for other function decls as well. */
-#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (EXP)
+#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (FUNCTION_DECL_CHECK (EXP))
+
+/* Record whether a label was defined in a statement expression which
+ has finished and so can no longer be jumped to. */
+#define C_DECL_UNJUMPABLE_STMT_EXPR(EXP) \
+ DECL_LANG_FLAG_6 (LABEL_DECL_CHECK (EXP))
+
+/* Record whether a label was the subject of a goto from outside the
+ current level of statement expression nesting and so cannot be
+ defined right now. */
+#define C_DECL_UNDEFINABLE_STMT_EXPR(EXP) \
+ DECL_LANG_FLAG_7 (LABEL_DECL_CHECK (EXP))
+
+/* Record whether a label was defined in the scope of an identifier
+ with variably modified type which has finished and so can no longer
+ be jumped to. */
+#define C_DECL_UNJUMPABLE_VM(EXP) \
+ DECL_LANG_FLAG_3 (LABEL_DECL_CHECK (EXP))
+
+/* Record whether a label was the subject of a goto from outside the
+ current level of scopes of identifiers with variably modified type
+ and so cannot be defined right now. */
+#define C_DECL_UNDEFINABLE_VM(EXP) \
+ DECL_LANG_FLAG_5 (LABEL_DECL_CHECK (EXP))
+
+/* Record whether a variable has been declared threadprivate by
+ #pragma omp threadprivate. */
+#define C_DECL_THREADPRIVATE_P(DECL) DECL_LANG_FLAG_3 (VAR_DECL_CHECK (DECL))
/* Nonzero for a decl which either doesn't exist or isn't a prototype.
N.B. Could be simplified if all built-in decls had complete prototypes
/* 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,
cts_char,
cts_int,
cts_float,
- cts_double
+ cts_double,
+ cts_dfloat32,
+ cts_dfloat64,
+ cts_dfloat128
};
/* A sequence of declaration specifiers in C. */
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 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;
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. */
int extern_inline;
};
+/* Save lists of labels used or defined in particular contexts.
+ Allocated on the parser obstack. */
+
+struct c_label_list
+{
+ /* The label at the head of the list. */
+ tree label;
+ /* The rest of the list. */
+ struct c_label_list *next;
+};
+
+/* Statement expression context. */
+
+struct c_label_context_se
+{
+ /* The labels defined at this level of nesting. */
+ struct c_label_list *labels_def;
+ /* The labels used at this level of nesting. */
+ struct c_label_list *labels_used;
+ /* The next outermost context. */
+ struct c_label_context_se *next;
+};
+
+/* Context of variably modified declarations. */
+
+struct c_label_context_vm
+{
+ /* The labels defined at this level of nesting. */
+ struct c_label_list *labels_def;
+ /* The labels used at this level of nesting. */
+ struct c_label_list *labels_used;
+ /* The scope of this context. Multiple contexts may be at the same
+ numbered scope, since each variably modified declaration starts a
+ new context. */
+ unsigned scope;
+ /* The next outermost context. */
+ struct c_label_context_vm *next;
+};
+
\f
-/* in c-parse.in */
+/* in c-parser.c */
extern void c_parse_init (void);
/* in c-aux-info.c */
extern void push_scope (void);
extern tree pop_scope (void);
extern void insert_block (tree);
-extern tree pushdecl (tree);
extern void c_expand_body (tree);
extern void c_init_decl_processing (void);
extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *,
bool, bool);
extern tree build_enumerator (tree, tree);
-extern void check_for_loop_decls (void);
+extern tree check_for_loop_decls (void);
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 tree grokparm (const struct c_parm *);
extern tree implicitly_declare (tree);
extern void keep_next_level (void);
-extern tree lookup_name (tree);
extern void pending_xref_error (void);
extern void c_push_function_context (struct function *);
extern void c_pop_function_context (struct function *);
extern void push_parm_decl (const struct c_parm *);
-extern tree pushdecl_top_level (tree);
extern struct c_declarator *set_array_declarator_inner (struct c_declarator *,
struct c_declarator *,
bool);
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 *);
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 int in_typeof;
extern struct c_switch *c_switch_stack;
+extern struct c_label_context_se *label_context_stack_se;
+extern struct c_label_context_vm *label_context_stack_vm;
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 default_conversion (tree);
+extern struct c_expr default_function_array_conversion (struct c_expr);
extern tree composite_type (tree, 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_unary_op (enum tree_code, struct c_expr);
extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
struct c_expr);
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 tree build_c_cast (tree, tree);
-extern tree build_modify_expr (tree, enum tree_code, tree);
extern void store_init_value (tree, tree);
extern void error_init (const char *);
extern void pedwarn_init (const char *);
extern tree c_finish_bc_stmt (tree *, bool);
extern tree c_finish_goto_label (tree);
extern tree c_finish_goto_ptr (tree);
+extern void c_begin_vm_scope (unsigned int);
+extern void c_end_vm_scope (unsigned int);
+extern tree c_expr_to_decl (tree, bool *, bool *, bool *);
+extern tree c_begin_omp_parallel (void);
+extern tree c_finish_omp_parallel (tree, tree);
+extern tree c_finish_omp_clauses (tree);
/* Set to 0 at beginning of a function definition, set to 1 if
a return statement that specifies a return value is seen. */
/* In order for the format checking to accept the C frontend
diagnostic framework extensions, you must include this file before
toplev.h, not after. */
-#define GCC_DIAG_STYLE __gcc_cdiag__
-#if GCC_VERSION >= 3005
+#if GCC_VERSION >= 4001
#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)