Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

mcs/errors/cs0121-26.cs

@@ -0,0 +1,43 @@
+// CS0121: The call is ambiguous between the following methods or properties: `A.B.X.Test(this int)' and `A.C.X.Test(this int)'
+// Line: 37
+
+using System;
+
+namespace A.B
+{
+	static class X
+	{
+		public static int Test (this int o)
+		{
+			return 1;
+		}
+	}
+}
+
+namespace A.C
+{
+	static class X
+	{
+		public static int Test (this int o)
+		{
+			return 2;
+		}
+	}
+}
+
+namespace C
+{
+	using A.B;
+	using static A.C.X;
+
+	class M
+	{
+		public static int Main ()
+		{
+			if (1.Test () != 1)
+				return 1;
+
+			return 0;
+		}
+	}
+}