#+mcl
`(if (ccl:%null-ptr-p ,obj)
nil
- (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil)))
+ #+(and mcl (not openmcl)) (ccl:%get-cstring ,obj 0 ,@(if length (list length) nil))
+ #+openmcl (let ((str (ccl:%get-cstring ,obj)))
+ ,(if length '(subseq str 0 length) 'str)))
)