eval.c:190
NORETURN(static void print_undef _((VALUE, ID)));
static void
print_undef(klass, id)
    VALUE klass;
    ID id;
{
    rb_name_error(id, "undefined method `%s' for %s `%s'",
		  rb_id2name(id),
		  (TYPE(klass) == T_MODULE) ? "module" : "class",
		  rb_class2name(klass));
}
