+
+;;; arrays of NIL should work, FSVO "work".
+(let ((a (make-array '(10 10) :element-type 'nil)))
+ (assert (= (array-total-size a) 100))
+ (assert (equal (array-dimensions a) '(10 10)))
+ (assert (eq (array-element-type a) 'nil)))
+
+(assert (eq (upgraded-array-element-type 'nil) 'nil))