From fa4d185a338b1cefa561f8675dee7e47174c0bf0 Mon Sep 17 00:00:00 2001
From: asfernandes <asfernandes@users.sourceforge.net>
Date: Mon, 1 Oct 2007 15:49:42 +0000
Subject: [PATCH] Fixed CORE-1489 - DATEADD wrong work with NULL arguments

---
 src/jrd/SysFunction.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/jrd/SysFunction.cpp b/src/jrd/SysFunction.cpp
index 811335603b..5f9af35261 100644
--- a/src/jrd/SysFunction.cpp
+++ b/src/jrd/SysFunction.cpp
@@ -549,7 +549,12 @@ static void makeDateAdd(DataTypeUtilBase* dataTypeUtil, SysFunction* function, d
 {
 	fb_assert(argsCount >= 3);
 
+	bool isNullable;
+	if (initResult(result, argsCount, args, &isNullable))
+		return;
+
 	*result = *args[2];
+	result->setNullable(isNullable);
 }