Re: [Xen-devel] sizeof(long) different under windows x64 and linuxx64

["Christoph Egger" <Christoph.Egger@xxxxxxx>]

On Wednesday 23 January 2008 02:38:37 James Harper wrote:
> > James Harper, le Wed 23 Jan 2008 11:55:50 +1100, a écrit :
> > > > > Any suggestions as to what the type should be called?
> > > >
> > > > Just the standard name: uintptr_t
> > >
> > > Can you qualify 'standard' in that context (eg Linux, gcc, POSIX, etc).
> >
> > C99
>
> That'll do nicely :)
>
> > > I don't ever remember hearing of that field before. Is it a type
> > > defined as 'an integer with the same width as a pointer'?
> >
> > « The following type designates an unsigned integer type with the
> > property that any valid pointer to void can be converted to this type,
> > then converted back to pointer to void, and the result will compare equal
> > to the original pointer: uintptr_t »
>
> Perfect. Thanks.

C99 introduced uintptr_t/intptr_t for portability:
http://www.unix.org/version2/whatsnew/lp64_wp.html

Christoph


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