Re: RFA: Support Windows extended error numbers in safe_strerror

[Mark Kettenis <mark.kettenis@xs4all.nl>]

> Date: Sat, 04 Feb 2006 12:24:31 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > Date: Fri, 3 Feb 2006 22:00:25 -0500
> > From: Daniel Jacobowitz <drow@false.org>
> > Cc: Mark Kettenis <mark.kettenis@xs4all.nl>, gdb-patches@sourceware.org
> > 
> > > If we had safe_strerror try a macro which the nm-*.h file could
> > > define, I'd feel better about the change.
> > 
> > Except we're trying to kill the aggravating NM files, remember?  Also,
> > it would be an XM file, and we've already successfully killed those (or
> > most of them).  We replaced them with autoconf magic, which is not
> > fundamentally different from the USE_WIN32API bits.
> 
> Right.
> 
> But we still can separate system-specific code from system-independent
> one.  One way is to have a function which is only defined on systems
> which need it.  Something like this:
> 
>   #ifdef NEED_FOOBAR
>   foobar ();
>   #endif
> 
> with the body of `foobar' hiding all the rest on a Windows-specific
> source file.  I think such a method minimizes the bad impact of
> ifdef's and does not annoy too much when one reads the sources.

This is slightly better, but starts to get problematic if there are
many places in the code where this is necessary.

Mark