enum built_in_function);
extern tree fold_builtin_stxcpy_chk (location_t, tree, tree, tree, tree, tree, bool,
enum built_in_function);
-extern tree fold_builtin_strncpy_chk (location_t, tree, tree, tree, tree, tree);
+extern tree fold_builtin_stxncpy_chk (location_t, tree, tree, tree, tree, tree, bool,
+ enum built_in_function);
extern tree fold_builtin_snprintf_chk (location_t, tree, tree, enum built_in_function);
extern bool fold_builtin_next_arg (tree, bool);
extern enum built_in_function builtin_mathfn_code (const_tree);