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Fix from Vadim for simple-minded case SELECT 1 WHERE 1 IN (SELECT 1)

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used in regression tests. No longer core dumps.
This commit is contained in:
Thomas G. Lockhart 1998-02-18 07:19:34 +00:00
parent 1aa93cbfa6
commit 6c1abf0d3c
1 changed files with 3 additions and 2 deletions
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5
src/backend/executor/nodeResult.c
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@ -27,7 +27,7 @@
* SeqScan (emp.all)
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.6 1998/02/13 03:26:52 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.7 1998/02/18 07:19:34 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -291,7 +291,8 @@ ExecReScanResult(Result *node, ExprContext *exprCtxt, Plan *parent)
* if chgParam of subnode is not null then plan
* will be re-scanned by first ExecProcNode.
*/
if (((Plan*) node)->lefttree->chgParam == NULL)
if (((Plan*) node)->lefttree &&
((Plan*) node)->lefttree->chgParam == NULL)
ExecReScan (((Plan*) node)->lefttree, exprCtxt, (Plan *) node);
}