--- libvirt.orig/src/virsh.c	2007-07-26 17:41:16.000000000 +0900
+++ libvirt/src/virsh.c	2007-07-31 11:21:28.000000000 +0900
@@ -4651,6 +4651,9 @@ vshParseArgv(vshControl * ctl, int argc,
             break;
         case 'l':
             ctl->logfile = vshStrdup(ctl, optarg);
+            if (strncmp(ctl->logfile,"-",1) == 0)
+                vshError(ctl, TRUE,
+                _("Do not use the hyphen (-) at the head of log file name"));
             break;
         default:
             vshError(ctl, TRUE,