From 8c17144c7555dbe3ed255c3556ca4f91f81c024f Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Fri, 18 Jan 2013 11:17:18 -0300
Subject: [PATCH] Fix off-by-one bug in xlog reading logic

Bug reported by Michael Paquier

Author: Andres Freund
---
 src/backend/access/transam/xlog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 3ac3b767dd..9ad9227179 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -8875,7 +8875,7 @@ retry:
 	/* See if we need to retrieve more data */
 	if (readFile < 0 ||
 		(readSource == XLOG_FROM_STREAM &&
-		 receivedUpto <= targetPagePtr + reqLen))
+		 receivedUpto < targetPagePtr + reqLen))
 	{
 		if (StandbyMode)
 		{