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-rw-r--r--src/backend/executor/execExpr.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c
index d4d3850ec7c..38b94c02767 100644
--- a/src/backend/executor/execExpr.c
+++ b/src/backend/executor/execExpr.c
@@ -2635,6 +2635,7 @@ ExecInitExprRec(Expr *node, ExprState *state,
var->typmod = exprTypmod((Node *) argexpr);
var->estate = ExecInitExpr(argexpr, state->parent);
var->econtext = NULL;
+ var->mcxt = NULL;
var->evaluated = false;
var->value = (Datum) 0;
var->isnull = true;