Created attachment 632427 [details]
Input Causing uniq -c to crash after compressed with xz.

Description of problem:

With the attachment, doing:

unxz < uniq-c.crash.txt.xz | uniq -c

generates an indication of a Segmentation fault on both Mageia 2 x86-64 and
Mageia Cauldron x86-64. This does not happen with unxz < uniq-c.crash.txt.xz |
~/apps/temp-coreutils/bin/uniq -c (where this uniq was installed using
"./configure --prefix="$HOME/apps/temp-coreutils" ; "make" ; "make install"
from the GNU coreutils sources).

The file contains a long line of items separated by CRs, due to a
mis-generation (which was since fixed) but uniq still should not crash.

How reproducible:

Always

Steps to Reproduce:
1. unxz < uniq-c.crash.txt.xz | uniq -c
  
Actual results:

Segfault.

Expected results:

Correct output returned.

Additional info:

See https://bugs.mageia.org/show_bug.cgi?id=7592

After some amount of investigation (thanks to Luigi12_work from IRC for
some insights), we found out that the problem was with
coreutils-8.19-new-i18n.patch patch. If we remove it, do "bm -l -p" and run
"./configure --prefix ; make ; make install", then the unxz < ... |
~/apps/temp-coreutils-rpm/uniq -c works fine. With all patches applied it
segfaults.

This patch is identical to this Fedora patch:

http://pkgs.fedoraproject.org/cgit/coreutils.git/plain/coreutils-i18n.patch