Re: tar on Mac does not like empty tar from git archive

From: Jeff King <peff@peff.net>
Date: Apr 8, 2013, 21:05 UTC
Message-ID: <20130408210536.GB9649@sigill.intra.peff.net>
In-Reply-To: <ABD0C67A-0B2B-4E32-AF49-93FBABC032A7@bjhargrave.com>

On Mon, Apr 08, 2013 at 02:36:05PM -0400, BJ Hargrave wrote:

Show 6 quoted lines

> Git 1.8.2.1 includes commit bd54cf17 - archive: handle commits with an
> empty tree
> 
> Test 2 of t5004-archive-corner-cases, "tar archive of empty tree is
> empty", fails on Mac OS X 10.8.3 (with XCode 4.6.1) since the tar
> command exits with return code 1 on the generated  tar file.

Hmm. So I guess the question is: do we need to work around this in the test for platforms that do not like empty tar files, or are the empty tarfiles we are making wrong somehow?

Show 8 quoted lines

> tar --version
> bsdtar 2.8.3 - libarchive 2.8.3
> 
> It appears that bsdtar does not like the empty tar files created by
> git archive. An empty tar file created by bsdtar is accepted.
> 
> tar cT /dev/null | tar t; echo $?
> 0

That makes me think the latter ("we are wrong"). I don't have my OS X box handy; can you provide a sample empty tarfile that it creates?

-Peff