/* Definitions for C parsing and type checking.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of GCC.
/* Language-specific declaration information. */
-struct lang_decl GTY(())
-{
+struct GTY(()) lang_decl {
char dummy;
};
and C_RID_YYCODE is the token number wanted by Yacc. */
#define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID)
-struct lang_type GTY(())
-{
+struct GTY(()) lang_type {
/* In a RECORD_TYPE, a sorted array of the fields of the type. */
struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s;
/* In an ENUMERAL_TYPE, the min and max values. */
without prototypes. */
#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE)
+/* For a CONSTRUCTOR, whether some initializer contains a
+ subexpression meaning it is not a constant expression. */
+#define CONSTRUCTOR_NON_CONST(EXPR) TREE_LANG_FLAG_1 (CONSTRUCTOR_CHECK (EXPR))
+
/* Record parser information about an expression that is irrelevant
for code generation alongside a tree representing its value. */
struct c_expr
{
/* The value of the expression. */
tree value;
- /* Record the original binary operator of an expression, which may
+ /* Record the original unary/binary operator of an expression, which may
have been changed by fold, STRING_CST for unparenthesized string
- constants, or ERROR_MARK for other expressions (including
+ constants, C_MAYBE_CONST_EXPR for __builtin_constant_p calls
+ (even if parenthesized), for subexpressions, and for non-constant
+ initializers, or ERROR_MARK for other expressions (including
parenthesized expressions). */
enum tree_code original_code;
+ /* If not NULL, the original type of an expression. This will
+ differ from the type of the value field for an enum constant.
+ The type of an enum constant is a plain integer type, but this
+ field will be the enum type. */
+ tree original_type;
};
/* A kind of type specifier. Note that this information is currently
enum c_typespec_kind kind;
/* The specifier itself. */
tree spec;
+ /* An expression to be evaluated before the type specifier, in the
+ case of typeof specifiers, or NULL otherwise or if no such
+ expression is required for a particular typeof specifier. In
+ particular, when typeof is applied to an expression of variably
+ modified type, that expression must be evaluated in order to
+ determine array sizes that form part of the type, but the
+ expression itself (as opposed to the array sizes) forms no part
+ of the type and so needs to be recorded separately. */
+ tree expr;
+ /* Whether the expression has operands suitable for use in constant
+ expressions. */
+ bool expr_const_operands;
};
/* A storage class specifier. */
whole type, or NULL_TREE if none or a keyword such as "void" or
"char" is used. Does not include qualifiers. */
tree type;
+ /* Any expression to be evaluated before the type, from a typeof
+ specifier. */
+ tree expr;
/* The attributes from a typedef decl. */
tree decl_attr;
/* When parsing, the attributes. Outside the parser, this will be
enum c_typespec_keyword typespec_word;
/* The storage class specifier, or csc_none if none. */
enum c_storage_class storage_class;
+ /* Whether any expressions in typeof specifiers may appear in
+ constant expressions. */
+ BOOL_BITFIELD expr_const_operands : 1;
/* Whether any declaration specifiers have been seen at all. */
BOOL_BITFIELD declspecs_seen_p : 1;
/* Whether a type specifier has been seen. */
that keep track of the progress of compilation of the current function.
Used for nested functions. */
-struct language_function GTY(())
-{
+struct GTY(()) language_function {
struct c_language_function base;
tree x_break_label;
tree x_cont_label;
extern tree declare_label (tree);
extern tree define_label (location_t, tree);
extern void c_maybe_initialize_eh (void);
-extern void finish_decl (tree, tree, tree);
+extern void finish_decl (tree, tree, tree, tree);
extern tree finish_enum (tree, tree, tree);
extern void finish_function (void);
extern tree finish_struct (tree, tree, tree);
extern struct c_arg_info *get_parm_info (bool);
extern tree grokfield (location_t, struct c_declarator *,
struct c_declspecs *, tree, tree *);
-extern tree groktypename (struct c_type_name *);
+extern tree groktypename (struct c_type_name *, tree *, bool *);
extern tree grokparm (const struct c_parm *);
extern tree implicitly_declare (tree);
extern void keep_next_level (void);
/* in c-objc-common.c */
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 bool c_warn_unused_global_decl (const_tree);
extern void c_initialize_diagnostics (diagnostic_context *);
extern bool c_vla_unspec_p (tree x, tree fn);
((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
/* in c-typeck.c */
+extern bool in_late_binary_op;
extern int in_alignof;
extern int in_sizeof;
extern int in_typeof;
extern struct c_label_context_se *label_context_stack_se;
extern struct c_label_context_vm *label_context_stack_vm;
+extern tree c_objc_common_truthvalue_conversion (location_t, tree);
extern tree require_complete_type (tree);
extern int same_translation_unit_p (const_tree, const_tree);
extern int comptypes (tree, tree);
extern tree composite_type (tree, tree);
extern tree build_component_ref (tree, tree);
extern tree build_array_ref (tree, tree, location_t);
-extern tree build_external_ref (tree, int, location_t);
+extern tree build_external_ref (tree, int, location_t, tree *);
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,
location_t);
-extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
+extern struct c_expr parser_build_binary_op (location_t,
+ enum tree_code, struct c_expr,
struct c_expr);
-extern tree build_conditional_expr (tree, tree, tree);
+extern tree build_conditional_expr (tree, bool, 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 void store_init_value (tree, tree);
+extern void store_init_value (tree, tree, tree);
extern void error_init (const char *);
extern void pedwarn_init (location_t, int opt, const char *);
extern void maybe_warn_string_init (tree, struct c_expr);
extern struct c_expr pop_init_level (int);
extern void set_init_index (tree, tree);
extern void set_init_label (tree);
-extern void process_init_element (struct c_expr);
-extern tree build_compound_literal (tree, tree);
+extern void process_init_element (struct c_expr, bool);
+extern tree build_compound_literal (tree, tree, bool);
extern tree c_start_case (tree);
extern void c_finish_case (tree);
extern tree build_asm_expr (tree, tree, tree, tree, bool);
extern tree c_finish_stmt_expr (tree);
extern tree c_process_expr_stmt (tree);
extern tree c_finish_expr_stmt (tree);
-extern tree c_finish_return (tree);
+extern tree c_finish_return (tree, tree);
extern tree c_finish_bc_stmt (tree *, bool);
extern tree c_finish_goto_label (tree);
extern tree c_finish_goto_ptr (tree);
extern void pedwarn_c90 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
extern void pedwarn_c99 (location_t, int opt, const char *, ...) ATTRIBUTE_GCC_CDIAG(3,4);
+extern bool c_cpp_error (cpp_reader *, int, location_t, unsigned int,
+ const char *, va_list *)
+ ATTRIBUTE_GCC_CDIAG(5,0);
+
#endif /* ! GCC_C_TREE_H */
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