From cd35e8927f5f99686aba54272ee5777c2781710a Mon Sep 17 00:00:00 2001
From: Chris Lalancette <clalance@redhat.com>
Date: Tue, 20 Jul 2010 12:51:12 -0400
Subject: [PATCH] Fix a NULL dereference in the case that the arg in question
 didn't exist.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
---
 tools/virsh.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index 17c3074403..354feb0c29 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -9771,7 +9771,7 @@ vshCommandOptString(const vshCmd *cmd, const char *name, int *found)
     if (arg && arg->data && *arg->data)
         return arg->data;
 
-    if ((arg->def->flag) & VSH_OFLAG_REQ)
+    if (arg && arg->def && ((arg->def->flag) & VSH_OFLAG_REQ))
         vshError(NULL, _("Missing required option '%s'"), name);
 
     return NULL;