From 619eaf318b3420056c14933bd513201bfb8af494 Mon Sep 17 00:00:00 2001
From: Michael Schroeder <mls@suse.de>
Date: Mon, 12 Jan 2015 14:38:50 +0100
Subject: [PATCH 5/6] fix off-by-one error in delta generation code

This could lead to a segfault in rare circumstances.
---
 delta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/delta.c b/delta.c
index 3569351..caafa62 100644
--- a/delta.c
+++ b/delta.c
@@ -366,7 +366,7 @@ scannext:
 	    {
 	      if (memcmp(new + scan + HSIZE *3, old + pos2 - 1, HSIZE))
 		{
-		  ssx2 = (ssx2 == prime) ? 0 : ssx2 + 1;
+		  ssx2 = (ssx2 == prime - 1) ? 0 : ssx2 + 1;
 		  pos2 = hash[ssx2];
 		}
 	    }
-- 
2.1.0