Copy or reference?

[kudu]

@mnemnion

This? This I would not count on working. It’s extremely fragile, you don’t actually make a copy here. The documentation explicitly reserves the right to pass this by reference if it chooses, so the code you wrote is a straightforward bug in Zig status-quo (and probably it always should be).

Oh, I see. It worked only by chance, maybe because A is so small here.

I think I can mark this as solved for me, because I now have a much better understand of what is happening. Many replies have been helpful, so I just mark the last one as the solution.
Thanks again everybody.