> From: Ryan Bloom [mailto:rbb@covalent.net]
>
> > From: Ulrich Drepper [mailto:drepper@redhat.com]
> >
> > On Tue, 2002-07-16 at 17:49, Blair Zajac wrote:
> >
> > > We don't need to make a copy of errno.
> >
> > Oh yes, we do. When it comes to interaction with the C library you
> can
> > believe me. errno is no simple variable on almost all systems. So,
> use
> > the patch as I wrote it, please.
>
> You most definitely do not need to make a copy of errno. As proof, we
> don't make copies of it anywhere in APR, and it works on every
platform
> we have tried.
>
> While errno is not a simple variable, compilers are smart enough to
> treat it as if it is a simple variable, so just 'return errno' works
> everywhere.
BTW, I thought of this after I hit send. Errno MUST be treated as a
simple variable, or all of the older apps that used it as such would
break with new compilers.
Ryan
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Received on Wed Jul 17 17:46:24 2002