(info (layout-info (sb-kernel:layout-of object))))
(when (sb-kernel::defstruct-description-p info)
(dolist (dd-slot (dd-slots info) (nreverse parts-list))
(info (layout-info (sb-kernel:layout-of object))))
(when (sb-kernel::defstruct-description-p info)
(dolist (dd-slot (dd-slots info) (nreverse parts-list))