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

From: Daniel P. Berrange
Subject: Re: [libvirt] [PATCH 2/4] Fix format specifiers in test cases on Win32
Date: Thu, 29 Mar 2012 13:47:52 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, Mar 29, 2012 at 06:45:03AM -0600, Eric Blake wrote:
> On 03/29/2012 03:53 AM, Daniel P. Berrange wrote:
> > From: "Daniel P. Berrange" <address@hidden>
> > 
> > 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.

Ah, if it turns out to be a gnulib bug, then that'd be
preferrable to fix.

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