Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-330.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+public class BaseCollection<T> : IEnumerable<T>
+{
+	protected List<T> items = new List<T> ();
+
+	IEnumerator<T> IEnumerable<T>.GetEnumerator ()
+	{
+		return items.GetEnumerator ();
+	}
+
+        IEnumerator IEnumerable.GetEnumerator ()
+        {
+		return items.GetEnumerator ();
+        }
+}
+ 
+public class BaseIntList<T> : BaseCollection<T>
+{
+}
+
+public class IntList : BaseIntList<int>
+{
+}
+
+class X
+{
+        public static void Main ()
+        {
+		IntList list = new IntList ();
+		foreach (int i in list) {
+			Console.WriteLine (i);
+		}
+        }
+}