On 01/25/2012 07:40 AM, Anthony Liguori wrote: >>> >>> (void *) isn't compatible with integers or function pointers (at least >>> not in a portable way). > > I don't see how they can be compatible since on some platforms > sizeof(void (*)(void)) != sizeof(void *).
C99 says they are not required to be the same, but POSIX adds an additional requirement on top of C that all function pointers must be convertible to void* and back without loss of data. Pretty much any system where qemu can compile is probably already complying with that particular POSIX extension to C, even if it is not portable in practice to a pure C environment. -- Eric Blake ebl...@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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