(define-mutator-accessors binding-stack-end :sap nil)
(define-mutator-accessors number-stack-base :sap nil)
(define-mutator-accessors number-stack-end :sap nil)
(define-mutator-accessors binding-stack-end :sap nil)
(define-mutator-accessors number-stack-base :sap nil)
(define-mutator-accessors number-stack-end :sap nil)
(define-mutator-accessors nursery-start :sap nil)
(define-mutator-accessors nursery-end :sap nil)
(define-mutator-accessors storebuf-start :sap nil)
(define-mutator-accessors nursery-start :sap nil)
(define-mutator-accessors nursery-end :sap nil)
(define-mutator-accessors storebuf-start :sap nil)