Re: [PATCH] inttostr: add gidtostr and uidtostr

[Paul Eggert]

I think the worry was that there are zillions of such types
(mode_t, dev_t, pid_t, etc.), too many to define a function
for each.  For valid gid_t and uid_t values one can use
umaxtostr in practice, and there seemed to be little point
to tuning for platforms where gid_t and uid_t are narrower than
uintmax_t.