Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-839.cs

@@ -0,0 +1,38 @@
+namespace N1
+{
+	using IndexingChain = N2.D.IndexingChain;
+
+	class M
+	{
+		public static void Main ()
+		{
+		}
+	}
+}
+
+namespace N2
+{
+	using N3;
+
+	public class D : C
+	{
+	}
+}
+
+namespace N3
+{
+	using System.Collections.Generic;
+
+	public class C
+	{
+		class Foo : List<int>
+		{
+		}
+
+		public class IndexingChain
+		{
+		}
+	}
+
+}
+