using System;

public class C {

    public interface Test{}

    public abstract class WhoCares : Test{}

    public struct Important : Test{}

    public static void M<T>(T t) where T :struct, Test

    {

        //ref T x = ref System.Runtime.CompilerServices.Unsafe.AsRef(t);

        ref T y = ref t;

        ref byte b = ref System.Runtime.CompilerServices.Unsafe.AddByteOffset(ref System.Runtime.CompilerServices.Unsafe.As<T, byte>(ref y), new IntPtr((-1)));

        b = byte.MaxValue;

        for(int i = 1; i < IntPtr.Size; ++i)

        {

            b = ref System.Runtime.CompilerServices.Unsafe.AddByteOffset(ref System.Runtime.CompilerServices.Unsafe.As<T, byte>(ref y), new IntPtr((-1)));

            b = byte.MaxValue;

        }

    }

    public static void Main()

    {

        M<Important>(default(Important));

    }

}