sizeof and typeof it is set for other function decls as well. */
#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (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))
+
/* 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
(but this is presently difficult because some of them need FILE*). */
int extern_inline;
};
+/* Save lists of labels used or defined in particular statement
+ expression 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;
+};
+
+struct c_label_context
+{
+ /* 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 *next;
+};
+
\f
/* in c-parser.c */
extern void c_parse_init (void);
extern tree build_enumerator (tree, tree);
extern void 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, location_t);
extern tree declare_label (tree);
extern int in_typeof;
extern struct c_switch *c_switch_stack;
+extern struct c_label_context *label_context_stack;
extern tree require_complete_type (tree);
extern int same_translation_unit_p (tree, 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 tree composite_type (tree, tree);
extern tree build_component_ref (tree, tree);
extern tree build_indirect_ref (tree, const char *);