New test.

svn path=/trunk/mcs/; revision=120140

1 files changed, 64 insertions, 0 deletions

diff --git a/mcs/tests/gtest-428.cs b/mcs/tests/gtest-428.cs
new file mode 100644
index 00000000000..33e76fcd022
--- /dev/null
+++ b/mcs/tests/gtest-428.cs
@@ -0,0 +1,64 @@
+using System;
+
+public struct CInt
+{
+	int data;
+
+	public CInt (int data)
+	{
+		this.data = data;
+	}
+
+	public static implicit operator CInt (int xx)
+	{
+		return new CInt (xx);
+	}
+
+	public static implicit operator int (CInt xx)
+	{
+		return xx.data;
+	}
+}
+
+
+public class Klass
+{
+	CInt? t;
+	public Klass (CInt? t)
+	{
+		this.t = t;
+	}
+
+	public CInt? Value
+	{
+		get
+		{
+			return t;
+		}
+	}
+}
+
+public class MainClass
+{
+	public static int Main ()
+	{
+		var v = new Klass (new CInt (3));
+
+		if (v.Value == 1)
+			return 1;
+
+		if (v.Value != 3)
+			return 2;
+
+		if (v.Value == null)
+			return 3;
+
+		var v2 = new Klass (null);
+
+		if (v2.Value != null)
+			return 4;
+
+		Console.WriteLine ("OK");
+		return 0;
+	}
+}