sys-base: Expand hard-exit a bit.

diff --git a/sys-base.lisp b/sys-base.lisp
index fdbf4fb6b7ab4852f0dfecf3710ced94600af45a..47ef2fb325d7329c807f50a796e5b3aae52f5d98 100644 (file)
--- a/sys-base.lisp
+++ b/sys-base.lisp
@@ -45,9 +45,10 @@ (defun exit (&optional (code 0))
         (abort))))
 
 #+cmu
-(defun hard-exit (code)
+(defun hard-exit (&optional (code 0))
   "Stops the program immediately in its tracks.  Does nothing else.  Use
 after fork, for example, to avoid flushing buffers."
+  (declare (type (unsigned-byte 32) code))
   (unix::void-syscall ("_exit" c-call:int) code))
 
 #+cmu