From d120b1c1fc0fa79935a9d4cc55c8f49275980327 Mon Sep 17 00:00:00 2001
From: Luigi Rizzo <luigi@FreeBSD.org>
Date: Sun, 27 Dec 1998 11:23:05 +0000
Subject: [PATCH] Remove coredump when running "ipfw pipe" without more
 arguments. PR: 8937

---
 sbin/ipfw/ipfw.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sbin/ipfw/ipfw.c b/sbin/ipfw/ipfw.c
index 966a703cc431..22e794d6a81a 100644
--- a/sbin/ipfw/ipfw.c
+++ b/sbin/ipfw/ipfw.c
@@ -16,7 +16,7 @@
  *
  * NEW command line interface for IP firewall facility
  *
- * $Id: ipfw.c,v 1.62 1998/12/07 05:54:37 archie Exp $
+ * $Id: ipfw.c,v 1.63 1998/12/14 18:43:03 luigi Exp $
  *
  */
 
@@ -1386,6 +1386,9 @@ ipfw_main(ac,av)
                 ac-- ;
                 av++ ;
         }
+	if (!ac) {
+		show_usage("pipe requires arguments");
+	}
         /* allow argument swapping */
         if (ac > 1 && *av[0]>='0' && *av[0]<='9') {
                 char *p = av[0] ;