// Compiler options: -warnaserror using System; [assembly: CLSCompliant (true)] public class CLSClass { public byte XX { get { return 5; } } public static void Main() {} } public class Big { [CLSCompliant (false)] public static implicit operator Big (uint value) { return null; } } [CLSCompliant (false)] public partial class C1 { } public partial class C1 { public void method (uint u) { } }