(defclass has-slots-but-isnt-finalized () (a b c))
(let ((class (find-class 'has-slots-but-isnt-finalized)))
(assert (not (sb-mop:class-finalized-p class)))
(defclass has-slots-but-isnt-finalized () (a b c))
(let ((class (find-class 'has-slots-but-isnt-finalized)))
(assert (not (sb-mop:class-finalized-p class)))