From 6d9051df32b90c6a4fe6ca1ff9e771b7dfe004fa Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Thu, 6 Oct 2011 13:50:45 +0100
Subject: [PATCH] helper: Improve error message when run on random files
 (thanks Alexey Torkhov).

---
 helper/appliance.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/helper/appliance.c b/helper/appliance.c
index b2cc840..c4d0b32 100644
--- a/helper/appliance.c
+++ b/helper/appliance.c
@@ -284,7 +284,9 @@ add_hostfiles (const char *hostfiles_file, struct writer *writer)
     if (strchr (hostfile, '*') || strchr (hostfile, '?')) {
       char *dirname = xstrdup (hostfile);
       char *patt = strrchr (dirname, '/');
-      assert (patt);
+      if (!patt)
+        error (EXIT_FAILURE, 0, "%s: line %zu: invalid pattern\n(is this file a supermin appliance hostfiles file?)",
+               hostfiles_file, i+1);
       *patt++ = '\0';
 
       char **files = read_dir (dirname);
-- 
1.8.3.1