From 38d103763d14baddf3cbfe4b00b501059fc9447f Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Tue, 21 Feb 2017 11:33:07 -0500
Subject: Make more use of castNode()

---
 src/backend/utils/adt/timestamp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/backend/utils/adt/timestamp.c')

diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c
index 9b4c012a63c..997a551bd87 100644
--- a/src/backend/utils/adt/timestamp.c
+++ b/src/backend/utils/adt/timestamp.c
@@ -1309,11 +1309,10 @@ intervaltypmodleastfield(int32 typmod)
 Datum
 interval_transform(PG_FUNCTION_ARGS)
 {
-	FuncExpr   *expr = (FuncExpr *) PG_GETARG_POINTER(0);
+	FuncExpr   *expr = castNode(FuncExpr, PG_GETARG_POINTER(0));
 	Node	   *ret = NULL;
 	Node	   *typmod;
 
-	Assert(IsA(expr, FuncExpr));
 	Assert(list_length(expr->args) >= 2);
 
 	typmod = (Node *) lsecond(expr->args);
-- 
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