Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-169.cs

@@ -0,0 +1,20 @@
+class list <A> {
+	public class Cons <T> : list <T> {   }
+	public class Nil <T> : list <T> {  }
+}
+
+class C {
+	public static void Rev<T> (list <T> y) {
+		if (y is list<object>.Cons<T>)
+			System.Console.WriteLine ("Cons");
+		if (y is list<object>.Nil<T>)
+			System.Console.WriteLine ("Nil");
+	}
+}
+
+class M {
+	public static void Main () { 
+		C.Rev (new list<object>.Cons <string> ());
+		C.Rev (new list<object>.Nil <string> ());
+	 }
+}