(inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
(storew type result 0 other-pointer-lowtag)
(storew length result vector-length-slot other-pointer-lowtag)
(inst lea result (make-ea :byte :base result :disp other-pointer-lowtag))
(storew type result 0 other-pointer-lowtag)
(storew length result vector-length-slot other-pointer-lowtag)