(assert (array-in-bounds-p a 7))
(assert (not (array-in-bounds-p a 11)))
(assert (not (array-in-bounds-p a (1+ most-positive-fixnum)))))
+
+;;; arrays of bits should work:
+(let ((a (make-array '(10 10) :element-type 'bit :adjustable t)))
+ (setf (bit a 0 0) 1)
+ (assert (= (bit a 0 0) 1)))
+(let ((a (make-array '(10 10) :element-type 'bit)))
+ (setf (sbit a 0 0) 1)
+ (assert (= (sbit a 0 0) 1)))
+
+(let ((x (copy-seq #*0011))
+ (y (copy-seq #*0101)))
+ (assert (equalp (bit-and x y nil) #*0001)))
+
+;;; 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))