`(truly-the layout (%instance-ref ,x 0)))
(define-source-transform %set-instance-layout (x val)
`(%instance-set ,x 0 (the layout ,val)))
+(define-source-transform %funcallable-instance-layout (x)
+ `(truly-the layout (%funcallable-instance-info ,x 0)))
+(define-source-transform %set-funcallable-instance-layout (x val)
+ `(setf (%funcallable-instance-info ,x 0) (the layout ,val)))
\f
;;;; character support