Pedantically, it might even be undefined behaviour (not sure, maybe a point of contention, similar to container_of macro). It's unlikely to cause problems, but

Pedantically, it might even be undefined behaviour (not sure, maybe a point of contention, similar to container_of macro). It's unlikely to cause problems, but the way you suggested is better (and can even be accompanied by a length field). Thank you to the author though! It is a nice little example.