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Re: [libvirt] [PATCH 2/4] Fix format specifiers in test cases on Win32



On 03/29/2012 03:53 AM, Daniel P. Berrange wrote:
> From: "Daniel P. Berrange" <berrange redhat com>
> 
> Some of the test suites use fprintf with format specifiers
> that are not supported on Win32 and are not fixed by gnulib.
> 
> The mingw32 compiler also has trouble detecting ssize_t
> correctly, complaining that 'ssize_t' does not match
> 'signed size_t' (which it expects for %zd). Force the
> cast to size_t to avoid this problem

Nothing wrong with your libvirt patch, but I can't help wonder if this
is a bug in the gnulib replacement headers, where mingw lacks ssize_t
but gnulib defines it to the wrong type in comparison to size_t (that
is, since mingw64 has sizeof(size_t)==4, it is not obvious whether
size_t is 'unsigned long' or 'unsigned int', and if gnulib picked 'int'
for ssize_t but size_t is 'unsigned long', that would explain the
compiler warnings.  Gnulib may need to be tweaked to help work around
this mingw situation.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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