From: Jeff King <peff@peff.net>
Date: Fri, 24 Jun 2016 13:13:25 GMT
Subject: Re: [PATCH v3 4/4] archive-tar: drop return value
Message-ID: <20160624131325.GA28941@sigill.intra.peff.net>
In-Reply-To: <1865881092.716701.1466768964884.JavaMail.zimbra@ensimag.grenoble-inp.fr>

On Fri, Jun 24, 2016 at 01:49:24PM +0200, Remi Galan Alfonso wrote:

> Hi Peff,
> 
> Jeff King <peff@peff.net> writes:
> > @@ -413,7 +411,7 @@ static int write_tar_archive(const struct archiver *ar,
> >  {
> >          int err = 0;
> >  
> > -        err = write_global_extended_header(args);
> > +        write_global_extended_header(args);
> >          if (!err)
> >                  err = write_archive_entries(args, write_tar_entry);
> 
> If we drop the error code from 'write_global_extended_header' then the
> above 'if (!err)' becomes useless (always evaluates to 'true' since
> 'err' is set to '0').

Thanks, you're right.

I wondered if we could drop "err" entirely, but write_archive_entries()
does indeed have some error code paths (everybody uses write_or_die, but
we return an error for things like unknown file types).

-Peff