public static class Test
{
	public static bool Run()
	{
		Stack<int>() s; //FAIL: cl
		Stack<int>! p = s; //FAIL: swift
		p.Push(42);
		p.Clear();
		p.Push(5);
		s.Push(10);
		p.Push(15);
		p.Pop();
		return p.Count == 2 && p.Pop() == 10 && p.Peek() == 5;
	}
}