From: Alvaro Herrera <alvherre@alvh.no-ip.org>
Date: Fri, 18 Jan 2013 14:17:18 +0000 (-0300)
Subject: Fix off-by-one bug in xlog reading logic
X-Git-Tag: REL9_3_BETA1~479
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8c17144c7555dbe3ed255c3556ca4f91f81c024f;p=postgresql

Fix off-by-one bug in xlog reading logic

Bug reported by Michael Paquier

Author: Andres Freund
---

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)
 		{