Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-645-lib.cs

@@ -0,0 +1,49 @@
+// Compiler options: -t:library
+
+using System;
+
+public class A
+{
+	public class AN
+	{
+		public B.N TestReturn ()
+		{
+			return new B.N ();
+		}
+	}
+}
+
+public class B
+{
+	public class N : C.N
+	{
+	}
+}
+
+public class C
+{
+	public class N
+	{
+		public void Test ()
+		{
+		}
+	}
+}
+
+public class T3 : T2.E
+{
+}
+
+public class T1
+{
+	public void Test ()
+	{
+	}
+}
+
+public class T2 : T1
+{
+	public interface E
+	{
+	}
+}