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Fix bogus range_table_mutator() logic for RangeTblEntry.tablesample.

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Must make a copy of the TableSampleClause node; the previous coding
modified the input data structure in-place.

Petr Jelinek
This commit is contained in:
Tom Lane
2015-06-19 11:41:45 -04:00
parent ed16f73c57
commit be87143fe9
1 changed files with 7 additions and 3 deletions
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10
src/backend/nodes/nodeFuncs.c
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@ -2870,10 +2870,14 @@ range_table_mutator(List *rtable,
case RTE_RELATION: case RTE_RELATION:
if (rte->tablesample) if (rte->tablesample)
{ {
MUTATE(rte->tablesample->args, rte->tablesample->args, CHECKFLATCOPY(newrte->tablesample, rte->tablesample,
TableSampleClause);
MUTATE(newrte->tablesample->args,
newrte->tablesample->args,
List *); List *);
MUTATE(rte->tablesample->repeatable, MUTATE(newrte->tablesample->repeatable,
rte->tablesample->repeatable, Node *); newrte->tablesample->repeatable,
Node *);
} }
break; break;
case RTE_CTE: case RTE_CTE: