From fe733d66cf29152d113c6ad5ef60473cfd3f042b Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 23 Jul 2011 01:14:55 -0600
Subject: [PATCH] ...

---
 src/calibre/ebooks/mobi/debug.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/ebooks/mobi/debug.py b/src/calibre/ebooks/mobi/debug.py
index 790c8dd45b..b6c7991739 100644
--- a/src/calibre/ebooks/mobi/debug.py
+++ b/src/calibre/ebooks/mobi/debug.py
@@ -638,6 +638,9 @@ class IndexEntry(object): # {{{
                     self.tags.append(Tag(aut_tag[0], [val], self.entry_type,
                         cncx))
 
+        if raw.replace(b'\x00', b''):
+            raise ValueError('Extra bytes in INDX table entry %d: %r'%(self.index, raw))
+
     @property
     def label(self):
         for tag in self.tags: