Serialization results differ between Unity and .Net with using LayoutKind.Auto

[AwaharaFujihiro]

[MemoryPackable]
[StructLayout(LayoutKind.Auto)]
public partial struct StructAB
{
    public int A;
    public int B;
}

[MemoryPackable]
[StructLayout(LayoutKind.Auto)]
public partial struct StructABC
{
    public StructAB AB;
    public int C;
}

public static class MemoryPackTest
{
    public static void Test()
    {
        var abc = new StructABC { AB = new StructAB { A = 1, B = 2 }, C = 3 };
        var bytes = MemoryPackSerializer.Serialize(abc);
#if UNITY_EDITOR
        UnityEngine.Debug.Log(string.Join("", bytes.Select(b => $"{b:X2}")));
#else
        Console.WriteLine(string.Join("", bytes.Select(b => $"{b:X2}")));
#endif
    }
}

.Net (7.0)

03000000000000000100000002000000

Unity (2022.3.10f)

010000000200000003000000

[neuecc]

already discussed in here. #107
Auto behavior has undergone a breaking change in .NET 7.
You should make it Sequential whenever possible or be aware of the changes and control Auto.

NOTE: MagicOnion plans to include special measures.