Burst static readonly array issue

Unity Engine
1

So as per the Burst documentation we can use static readonly arrays in Burst:

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This works great and is an awesome way to have global arrays of static data for use in jobs and burst. I found that it breaks if I try to use other static readonly fields in the array construction though:

        public static readonly int3 Up =        new int3(0, 1, 0);
        public static readonly int3 Down =      new int3(0, -1, 0);
        public static readonly int3 Left =      new int3(-1, 0, 0);
        public static readonly int3 Right =     new int3(1, 0, 0);
        public static readonly int3 Forward =   new int3(0, 0, 1);
        public static readonly int3 Back =      new int3(0, 0, -1);

        public static readonly int3[] CubeDirections = new int3[6]
        {
            Up,
            Down,
            Left,
            Right,
            Forward,
            Back
        };

If I embed the int3s directly in the managed array then it works fine and is accessible from jobs/burst. But accessing the above array in Burst gives Burst error BC1022: Accessing a managed array is not supported

I’m guessing this is not a bug? Would it be possible to make this work in Burst?

2

I noticed that if you do math.int3(a,b,c) instead of new int3(a,b,c) it fails too