postgres.git / summary / log / commit / refs

commit    d52555576887cb408b11589a2c07d5b2d06f892d
Author:   Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date:     Tue Aug 02 07:47:17 2011 +0000
First released in: 9.2.0, 8.2.22, 8.3.16, 8.4.9, 9.0.5, 9.1.0

    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(-)

diff --git a/src/backend/executor/nodeLimit.c b/src/backend/executor/nodeLimit.c
index 1755268211e..7e0b98211f4 100644
--- a/src/backend/executor/nodeLimit.c
+++ b/src/backend/executor/nodeLimit.c
@@ -125,7 +125,7 @@ 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;


[parent: 76f7ad14b282]