Neil Conway <neilc@samurai.com> writes:
> I guess it would be safest to use %ld and cast pid_t to long. Of course,
> this seems a little paranoid -- is there actually a system with
> sizeof(pid_t) != 4?
Traditionally PIDs fit in 16 bits, let alone 32. I'd recommend that we
standardize on casting pid_t to int for printing purposes; I think
that's what's being done in more places than not. Also, as you note, we
are using int variables to hold PIDs in many places --- I don't think
it's worth running around and changing those either.
regards, tom lane