Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-095.cs

@@ -0,0 +1,44 @@
+using System;
+
+public interface IDirectedEnumerable<T>
+{
+	IDirectedEnumerable<T> Backwards();
+}
+
+public interface IDirectedCollectionValue<T> : IDirectedEnumerable<T>
+{
+	new IDirectedCollectionValue<T> Backwards();
+}
+
+public class GuardedCollectionValue<T> : IDirectedCollectionValue<T>
+{
+	IDirectedEnumerable<T> IDirectedEnumerable<T>.Backwards ()
+	{
+		return this;
+	}
+
+	public IDirectedCollectionValue<T> Backwards ()
+	{
+		return this;
+	}
+}
+
+public interface ISequenced<T> : IDirectedCollectionValue<T>
+{
+}
+
+public class GuardedSequenced<T>
+{
+	ISequenced<T> sequenced;
+
+	public IDirectedCollectionValue<T> Test ()
+	{
+		return sequenced.Backwards();
+	}
+}
+
+class X
+{
+	public static void Main ()
+	{ }
+}