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Fix small query-lifespan memory leak in bulk updates.
When there is an identifiable REPLICA IDENTITY index on the target table,
heap_update leaks the id_attrs bitmapset. That's not many bytes, but it
adds up over enough rows, since the code typically runs in a query-lifespan
context. Bug introduced in commit e55704d8b
, which did a rather poor job
of cloning the existing use-pattern for RelationGetIndexAttrBitmap().
Per bug #14293 from Zhou Digoal. Back-patch to 9.4 where the bug was
introduced.
Report: <20160824114320.15676.45171@wrigleys.postgresql.org>
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parent
1414d490f7
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@ -3802,6 +3802,7 @@ l2:
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ReleaseBuffer(vmbuffer);
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bms_free(hot_attrs);
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bms_free(key_attrs);
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bms_free(id_attrs);
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return result;
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}
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@ -4268,6 +4269,7 @@ l2:
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bms_free(hot_attrs);
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bms_free(key_attrs);
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bms_free(id_attrs);
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return HeapTupleMayBeUpdated;
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}
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