On Wednesday, 11 September 2024 at 12:17:02 UTC, Fox wrote: > I don't care about whether it's a bug or not, I just want to > learn What illegal instructions did this "assert(false);" code > create? Fortunately Godbolt supports D, so it's easy to see that it generates `ud2` on x86(_64): https://godbolt.org/z/4zq67boMW