+
+(let ((f (compile nil '(lambda ()
+ (let ((a (make-array '(4)
+ :element-type 'base-char
+ :initial-element #\z)))
+ (setf (aref a 0) #\a)
+ (setf (aref a 1) #\b)
+ (setf (aref a 2) #\c)
+ a)))))
+ (assert (= (length (funcall f)) 4)))
+
+(let ((x (make-array nil :initial-element 'foo)))
+ (adjust-array x nil)
+ (assert (eql (aref x) 'foo)))
+
+;;; BUG 315: "no bounds check for access to displaced array"
+;;; reported by Bruno Haible sbcl-devel "various SBCL bugs" from CLISP
+;;; test suite.
+(multiple-value-bind (val err)
+ (ignore-errors
+ (locally (declare (optimize (safety 3) (speed 0)))
+ (let* ((x (make-array 10 :fill-pointer 4 :element-type 'character
+ :initial-element #\space :adjustable t))
+ (y (make-array 10 :fill-pointer 4 :element-type 'character
+ :displaced-to x)))
+ (adjust-array x '(5))
+ (char y 5))))
+ (assert (and (not val) (typep err 'sb-kernel:displaced-to-array-too-small-error))))