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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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3
src/include/access/gist_private.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/gist_private.h,v 1.32 2008/08/23 10:37:24 teodor Exp $
* $PostgreSQL: pgsql/src/include/access/gist_private.h,v 1.33 2008/10/17 17:02:21 teodor Exp $
*
*-------------------------------------------------------------------------
*/
@ -73,6 +73,7 @@ typedef struct GISTScanOpaqueData
GISTSearchStack *stack;
GISTSearchStack *markstk;
uint16 flags;
bool qual_ok; /* false if qual can never be satisfied */
GISTSTATE *giststate;
MemoryContext tempCxt;
Buffer curbuf;