Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/errors/cs0104-5.cs

@@ -0,0 +1,35 @@
+// CS0104: `N' is an ambiguous reference between `C.N' and `A.T.N'
+// Line: 32
+
+namespace A
+{
+	public class T
+	{
+		public class N
+		{
+
+		}
+	}
+}
+
+namespace C
+{
+	struct N
+	{
+
+	}
+}
+
+namespace B
+{
+	using static A.T;
+	using C;
+
+	static class Program
+	{
+		static void Main ()
+		{
+			var u = new N ();
+		}
+	}
+}