On 01/16/2017 04:20 PM, Eric Blake wrote: > And the principle is that POSIX is allowed to make guarantees where the > C standard left things unspecified, particularly if those guarantees are > already something that many coders are already relying on because they > don't know any better.
My case study for that is the fact that storage returned by calloc() and interpreted as a struct containing pointers is NOT required by the C standard to treat those fields as null pointers, but POSIX was willing to add that as an additional requirement: http://austingroupbugs.net/view.php?id=940 -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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