+#+(and sbcl sb-unicode)
+(defun sbcl-naturalize-cstring (sap &key length (null-terminated-p t))
+ (declare (type sb-sys:system-area-pointer sap))
+ (locally
+ (declare (optimize (speed 3) (safety 0)))
+ (cond
+ (null-terminated-p
+ (let ((casted (sb-alien:cast
+ (sb-alien:sap-alien sap (* char)) sb-alien:c-string)))
+ (if length
+ (copy-seq (subseq casted 0 length))
+ (copy-seq casted))))
+ (t
+ (let ((result (make-string length)))
+ ;; this will not work in sb-unicode
+ (sb-kernel:copy-from-system-area sap 0
+ result (* sb-vm:vector-data-offset
+ sb-vm:n-word-bits)
+ (* length sb-vm:n-byte-bits))
+ result)))))
+