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During repeated rescan of GiST index it's possible that scan key

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is NULL but SK_SEARCHNULL is not set. Add checking IS NULL of keys
to set during key initialization. If key is NULL and SK_SEARCHNULL is not
set then nothnig can be satisfied.
With assert-enabled compilation that causes coredump.

Bug was introduced in 8.3 by support of IS NULL index scan.
This commit is contained in:
Teodor Sigaev
2008-10-17 17:02:21 +00:00
parent e034e517a7
commit beeb3562dd
3 changed files with 18 additions and 4 deletions
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5
src/backend/access/gist/gistget.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.75 2008/08/23 10:37:24 teodor Exp $
* $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.76 2008/10/17 17:02:21 teodor Exp $
*
*-------------------------------------------------------------------------
*/
@ -134,6 +134,9 @@ gistnext(IndexScanDesc scan, ScanDirection dir, TIDBitmap *tbm)
so = (GISTScanOpaque) scan->opaque;
if ( so->qual_ok == false )
return 0;
if (ItemPointerIsValid(&so->curpos) == false)
{
/* Being asked to fetch the first entry, so start at the root */