public static class Test
{
	public static bool Run()
	{
		string() s = "foo"; //FAIL: cl
		string p = "bar";
		string() s2 = "quux";
		s2 += s;
		s2 += p;
		s2 += p + $"{p}" + s;
		return s2 == "quuxfoobar" + "barbarfoo";
	}
}