Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/gtest-319.cs

@@ -0,0 +1,24 @@
+// Bug #80314
+using System.Collections.Generic;
+using System.Collections;
+
+public class Temp<T> : IEnumerable<Temp<T>.Foo>
+{
+	public class Foo { }
+
+	public IEnumerator<Temp<T>.Foo> GetEnumerator()
+	{
+		yield return new Foo ();
+	}
+
+	IEnumerator IEnumerable.GetEnumerator()
+	{
+		return GetEnumerator();
+	}
+}
+
+class X
+{
+	public static void Main ()
+	{ }
+}