Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-837.cs

@@ -0,0 +1,25 @@
+namespace TT
+{
+	class GG
+	{
+	}
+}
+
+namespace TT
+{
+	namespace A
+	{
+		using GG = System.DateTime;
+		
+		namespace X.Y
+		{
+			class X
+			{
+				public static void Main ()
+				{
+					System.DateTime dt = new GG ();
+				}
+			}
+		}
+	}
+}