+
+(with-test (:name :non-required-args-update-info)
+ (let ((name (gensym "NON-REQUIRE-ARGS-TEST"))
+ (*evaluator-mode* :compile))
+ (eval `(defun ,name (x) x))
+ (assert (equal '(function (t) (values t &optional))
+ (sb-kernel:type-specifier (sb-int:info :function :type name))))
+ (eval `(defun ,name (x &optional y) (or x y)))
+ (assert (equal '(function (t &optional t) (values t &optional))
+ (sb-kernel:type-specifier (sb-int:info :function :type name))))))
+