From bc6616aaedbe4bcd2441334a3bf8f43fe9635bf1 Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Tue, 2 Aug 2011 10:47:17 +0300
Subject: Avoid integer overflow when LIMIT + OFFSET >= 2^63.

This fixes bug #6139 reported by Hitoshi Harada.
---
 src/backend/executor/nodeLimit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/backend/executor/nodeLimit.c b/src/backend/executor/nodeLimit.c
index 85d1a6e27f1..f2d356d1f18 100644
--- a/src/backend/executor/nodeLimit.c
+++ b/src/backend/executor/nodeLimit.c
@@ -127,7 +127,7 @@ ExecLimit(LimitState *node)
 				 * the state machine state to record having done so.
 				 */
 				if (!node->noCount &&
-					node->position >= node->offset + node->count)
+					node->position - node->offset >= node->count)
 				{
 					node->lstate = LIMIT_WINDOWEND;
 					return NULL;
-- 
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