using System;

using System.Runtime.InteropServices;

using System.Runtime.CompilerServices;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Unsafe.SizeOf<DynValue>());

    }

}

[StructLayout(LayoutKind.Explicit)]

public struct DynValue

{

    public static readonly DynValue None = new();

    [FieldOffset(0)] readonly byte u8;

}

​