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Commit184ba4d

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Check for out-of-range varoattno in deparse_context_for_subplan.
I have seen this case in CVS tip due to new "physical tlist" optimizationfor subqueries. I believe it probably can't happen in existing releases,but the check is not going to hurt anything, so backpatch to 8.0 justin case.
1 parent0182951 commit184ba4d

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‎src/backend/utils/adt/ruleutils.c

Lines changed: 11 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
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*back to source text
44
*
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* IDENTIFICATION
6-
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.203 2005/07/02 17:01:50 momjian Exp $
6+
* $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.204 2005/07/15 18:39:59 tgl Exp $
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*
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* This software is copyrighted by Jan Wieck - Hamburg.
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*
@@ -1510,11 +1510,17 @@ deparse_context_for_subplan(const char *name, List *tlist,
15101510
if (var->varnoold>0&&var->varnoold <=rtablelength)
15111511
{
15121512
RangeTblEntry*varrte=rt_fetch(var->varnoold,rtable);
1513-
char*varname;
1513+
AttrNumbervarattnum=var->varoattno;
15141514

1515-
varname=get_rte_attribute_name(varrte,var->varoattno);
1516-
attrs=lappend(attrs,makeString(varname));
1517-
continue;
1515+
/* need this test in case it's referencing a resjunk col */
1516+
if (varattnum <=list_length(varrte->eref->colnames))
1517+
{
1518+
char*varname;
1519+
1520+
varname=get_rte_attribute_name(varrte,varattnum);
1521+
attrs=lappend(attrs,makeString(varname));
1522+
continue;
1523+
}
15181524
}
15191525
}
15201526
/* Fallback if can't get name */

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