Thank you for your bug report, the issue is fixed in saucy with this upload:
https://launchpad.net/ubuntu/+source/tar/1.26+dfsg-8
** Changed in: tar (Ubuntu)
Importance: Undecided => Low
** Changed in: tar (Ubuntu)
Status: New => Fix Released
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You received this bug notification beca
Upstream commit fixing this:
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=d88b2a613f4b1a5554e8c34c8f75b91abff5f0e9
nathan:~/tar-1.26$ curl -s
http://git.savannah.gnu.org/cgit/tar.git/patch/?id=d88b2a613f4b1a5554e8c34c8f75b91abff5f0e9
| patch -p1
patching file src/common.h
Hunk #1 succeed