There’s a risk, but far from a big one. You’d need exactly 2³² or even 2⁶⁴ pointer updates (or a multiple of it) between the time you read the pointer and the t

There’s a risk, but far from a big one. You’d need exactly 2³² or even 2⁶⁴ pointer updates (or a multiple of it) between the time you read the pointer and the time you try writing it for running into problems. That’s not likely to be a problem even on a 1000-core CPU. So, technically, this isn’t solving the ABA problem, it’s just hiding it very, very well.