(cold-set-layout-slot result 'info *nil-descriptor*)
(cold-set-layout-slot result 'pure *nil-descriptor*)
(cold-set-layout-slot result 'n-untagged-slots nuntagged)
(cold-set-layout-slot result 'info *nil-descriptor*)
(cold-set-layout-slot result 'pure *nil-descriptor*)
(cold-set-layout-slot result 'n-untagged-slots nuntagged)