From e561060500cbd20763f93a63db215613f4651521 Mon Sep 17 00:00:00 2001
From: Tim Terriberry <tterribe@xiph.org>
Date: Thu, 21 Oct 2010 18:09:29 +0000
Subject: [PATCH] Port r17542 from Tremor.

Reinstate an explicit check against phrasebook dim being set to zero.

svn path=/trunk/vorbis/; revision=17554
---
 lib/res0.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/res0.c b/lib/res0.c
index e5c7c87..8f14201 100644
--- a/lib/res0.c
+++ b/lib/res0.c
@@ -250,6 +250,7 @@ vorbis_info_residue *res0_unpack(vorbis_info *vi,oggpack_buffer *opb){
     int entries = ci->book_param[info->groupbook]->entries;
     int dim = ci->book_param[info->groupbook]->dim;
     int partvals = 1;
+    if (dim<1) goto errout;
     while(dim>0){
       partvals *= info->partitions;
       if(partvals > entries) goto errout;
-- 
2.7.4