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

Thomas G. Lockhart · Thomas G. Lockhart · commit 6c1abf0d3c41 · 1998-02-18T07:19:34.000Z
used in regression tests. No longer core dumps.
diff --git a/src/backend/executor/nodeResult.c b/src/backend/executor/nodeResult.c
@@ -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);
 	
 }

Original file line number	Diff line number	Diff line change
`@@ -27,7 +27,7 @@`
`27`	`27`	`* SeqScan (emp.all)`
`28`	`28`	`*`
`29`	`29`	`* IDENTIFICATION`
`30`		`- * $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.6 1998/02/13 03:26:52 vadim Exp $`
	`30`	`+ * $Header: /cvsroot/pgsql/src/backend/executor/nodeResult.c,v 1.7 1998/02/18 07:19:34 thomas Exp $`
`31`	`31`	`*`
`32`	`32`	`*-------------------------------------------------------------------------`
`33`	`33`	`*/`
`@@ -291,7 +291,8 @@ ExecReScanResult(Result node, ExprContext exprCtxt, Plan *parent)`
`291`	`291`	`* if chgParam of subnode is not null then plan`
`292`	`292`	`* will be re-scanned by first ExecProcNode.`
`293`	`293`	`*/`
`294`		`- if (((Plan*) node)->lefttree->chgParam == NULL)`
	`294`	`+ if (((Plan*) node)->lefttree &&`
	`295`	`+ ((Plan*) node)->lefttree->chgParam == NULL)`
`295`	`296`	`ExecReScan (((Plan) node)->lefttree, exprCtxt, (Plan ) node);`
`296`	`297`
`297`	`298`	`}`