;; This is computed lazily by CONTINUATION-DERIVED-TYPE, so use
;; CONTINUATION-TYPE-CHECK instead of the %'ed slot accessor.
(%type-check t :type (member t nil :deleted :no-check))
;; This is computed lazily by CONTINUATION-DERIVED-TYPE, so use
;; CONTINUATION-TYPE-CHECK instead of the %'ed slot accessor.
(%type-check t :type (member t nil :deleted :no-check))