On 08/11/2013 05:44 PM, Paul Eggert wrote: > 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.
I don't know of any platforms where gid_t and uid_t are larger than int; so libvirt just casts them to int (although it is feasible that such a platform can be added, so it also uses verify() to be alerted at compile time if those assumptions are wrong). There ARE platforms where pid_t (and thus id_t) are larger than long (namely 64-bit mingw has a 64-bit pid_t but 32-bit long), requiring the use of uintmax_t. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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