Re: Why does close_stdout close stdout and stderr?

[Paul Eggert]

Florian Weimer wrote:
> > You can achieve that "actual close call" using
> >
> >    error = close(dup(fileno(stdout)));
> >
> > so you don't actually need to "fclose" if you don't want to.
> > Any 'close' will do, it doesn't have to be the "last close".
> Hah, thanks for this suggestion!  So something good came out of this
> thread after all.  The big advantage of this approach is that this will
> preserve the descriptor and the stream, so that further diagnostics from
> the process are not suppressed.

That trick won't work if the dup fails.

Also, I worry that the trick won't port to non-Linux kernels, so it would have 
to be '#ifdef __linux__' or something like that.