Index: sbin/newfs_hammer/newfs_hammer.c
===================================================================
RCS file: /home/repos/DragonFly-CVS/src/sbin/newfs_hammer/newfs_hammer.c,v
retrieving revision 1.35
diff -u -r1.35 newfs_hammer.c
--- sbin/newfs_hammer/newfs_hammer.c	24 Jun 2008 17:40:22 -0000	1.35
+++ sbin/newfs_hammer/newfs_hammer.c	5 Jul 2008 23:27:47 -0000
@@ -117,6 +117,12 @@
 	NumVolumes = ac;
 	RootVolNo = 0;
 
+        if ( NumVolumes == 0) {
+                fprintf(stderr,
+                        "newfs_hammer: You should specify at least one volume\n");
+                exit(1);
+        }
+
 	total = 0;
 	for (i = 0; i < NumVolumes; ++i) {
 		vol = setup_volume(i, av[i], 1, O_RDWR);