extern tree build_sized_array_type (tree, int);
extern tree lookup_interface (tree);
-extern tree objc_build_constructor (tree, VEC(constructor_elt,gc) *);
+extern tree objc_build_constructor (tree, vec<constructor_elt, va_gc> *);
extern tree start_var_decl (tree, const char *);
extern void finish_var_decl (tree, tree);