From b0e68bbcaad49e57ae0cfea6d620822a0c0f3d1f Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Sun, 22 Dec 2013 19:07:28 +0100
Subject: [PATCH] Fixed a memory access error introduced with rev 1099

---
 libisofs/util.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libisofs/util.c b/libisofs/util.c
index 118f209..a855c02 100644
--- a/libisofs/util.c
+++ b/libisofs/util.c
@@ -1254,7 +1254,8 @@ uint16_t *iso_j_file_id(const uint16_t *src, int flag)
             pos++;
         }
     }
-    iso_handle_split_utf16(dest + (pos - 1));
+    if (pos > 0)
+        iso_handle_split_utf16(dest + (pos - 1));
 
     if ((flag & 1) && lnext <= 0)
         goto is_done;