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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System.Runtime.InteropServices;
using System;
internal class NullableTest
{
private static bool BoxUnboxToNQGen<T>(T o)
{
return ((ValueType)(object)o) == null;
}
private static bool BoxUnboxToQGen<T>(T? o) where T : struct
{
return ((T?)(object)(ValueType)o) == null;
}
private static bool BoxUnboxToNQ(object o)
{
return ((ValueType)o) == null;
}
private static bool BoxUnboxToQ(object o)
{
return ((ImplementAllInterface<int>?)(ValueType)o) == null;
}
private static int Main()
{
ImplementAllInterface<int>? s = null;
if (BoxUnboxToNQ(s) && BoxUnboxToQ(s) && BoxUnboxToNQGen(s) && BoxUnboxToQGen(s))
return ExitCode.Passed;
else
return ExitCode.Failed;
}
}
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