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Fix longstanding bug found by Atsushi Ogawa: _bt_check_unique would mark

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the wrong buffer dirty when trying to kill a dead index entry that's on
a page after the one it started on.  No risk of data corruption, just
inefficiency, but still a bug.
This commit is contained in:
Tom Lane
2005-10-12 17:18:15 +00:00
parent 592ca3cf06
commit 00de66a3b4
1 changed files with 5 additions and 2 deletions
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7
src/backend/access/nbtree/nbtinsert.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.119 2004/12/31 21:59:22 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.119.4.1 2005/10/12 17:18:15 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -266,7 +266,10 @@ _bt_check_unique(Relation rel, BTItem btitem, Relation heapRel,
hbuffer) == HEAPTUPLE_DEAD)
{
curitemid->lp_flags |= LP_DELETE;
SetBufferCommitInfoNeedsSave(buf);
if (nbuf != InvalidBuffer)
SetBufferCommitInfoNeedsSave(nbuf);
else
SetBufferCommitInfoNeedsSave(buf);
}
LockBuffer(hbuffer, BUFFER_LOCK_UNLOCK);
}