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path: root/src/backend/executor/execExprInterp.c
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-rw-r--r--src/backend/executor/execExprInterp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/executor/execExprInterp.c b/src/backend/executor/execExprInterp.c
index 09f6a5f14c1..1c3477b03c9 100644
--- a/src/backend/executor/execExprInterp.c
+++ b/src/backend/executor/execExprInterp.c
@@ -2324,6 +2324,10 @@ CheckVarSlotCompatibility(TupleTableSlot *slot, int attnum, Oid vartype)
attr = TupleDescAttr(slot_tupdesc, attnum - 1);
+ /* Internal error: somebody forgot to expand it. */
+ if (attr->attgenerated == ATTRIBUTE_GENERATED_VIRTUAL)
+ elog(ERROR, "unexpected virtual generated column reference");
+
if (attr->attisdropped)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_COLUMN),