Fixed length array, available for unmanaged type

FixedArray8

[StructLayout(LayoutKind.Sequential)]
public struct FixedArray8<T>
    where T : unmanaged
{
    public T Value0;

    public T Value1;

    public T Value2;

    public T Value3;

    public T Value4;

    public T Value5;

    public T Value6;

    public T Value7;

    public ref T this[int index]
    {
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        get
        {
            if (index > -1 && index < 8)
            {
                unsafe
                {
                    fixed (T* ptr = &Value0)
                    {
                        return ref *(ptr + index);
                    }
                }
            }

            throw new IndexOutOfRangeException($"{nameof(FixedArray8<T>)} index can't be {index}");
        }
    }
}

Test passed in .NET Framework, .NET Core, Unity Android(IL2CPP, Mono), Xenko Android, Xamarin Android.