(defparameter *abcl1* '(lambda (a) (declare (optimize (debug 0) (compilation-speed 1) (speed 2) (space 3) (safety 1))) (ash 0 (bit #*0100 (catch 'ct7 a)))))
(defun test1 () (let ((fn (compile nil *abcl1*))) (mapcar fn '(0 1 2 3))))
(test1) ==>
; Caught ERROR: ; Stack inconsistency detected in <unknown> at index 40: found 2, expected 0.