Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-iter-11.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections;
+
+class X {
+	public event EventHandler Hook;
+
+	public IEnumerator Pipeline ()
+	{
+		if (Hook == null)
+			throw new Exception ("error");
+
+		Hook (this, EventArgs.Empty);
+		
+		yield return 0;
+	}
+
+	static void M (object sender, EventArgs args)
+	{
+		Console.WriteLine ("Hook invoked");
+	}
+	
+	public static void Main ()
+	{
+		X x = new X ();
+		x.Hook += M;
+		IEnumerator y = x.Pipeline ();
+		y.MoveNext ();
+	}
+}
+