Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-468.cs

@@ -0,0 +1,27 @@
+using System;
+
+public class TS
+{
+	public int? v { 
+		get { return (int?) this; }
+	}
+
+	public static implicit operator int? (TS s)
+	{
+		return 5;
+	}
+
+	public static implicit operator TS (int? date)
+	{
+		return null;
+	}
+
+	public static int Main ()
+	{
+		var r = new TS ().v;
+		if (r != 5)
+			return 1;
+
+		return 0;
+	}
+}