[kubb]

Something that shouldn’t be written in a GC language.

[Cthulhu_]

GC is not relevant in this case, it's about whether you can make structs fit in cache lines and CPU registers. Mechanical sympathy is the googleable phrase. GC is a few layers further away.

[piokoch]

I don't think GC has anything to do here, doing manual memory allocation we might hit the same problem.