Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-392.cs

@@ -0,0 +1,26 @@
+using System;
+
+public class DieSubrangeType
+{
+	public int? UpperBound
+	{
+		get;
+		private set;
+	}
+
+	public DieSubrangeType ()
+	{
+		UpperBound = 1;
+	}
+}
+
+class X
+{
+	public static int Main ()
+	{
+		DieSubrangeType subrange = new DieSubrangeType ();
+		Console.WriteLine (subrange.UpperBound != null);
+		Console.WriteLine ((int) subrange.UpperBound);
+		return (int) subrange.UpperBound - 1;
+	}
+}