abstract class Base
{
	internal virtual bool Foo() //FAIL: cl
	{
		return false;
	}
}

class Derived : Base
{
	internal override bool Foo()
	{
		return true;
	}

	internal bool Bar()
	{
		return Foo();
	}
}

public static class Test
{
	public static bool Run()
	{
		Derived() d;
		return d.Foo() && d.Bar();
	}
}