Indeed, it was a bug in glibc locale data [1] and has been fixed [2] in version 2.17. If you mention Fedora the fix has been included in Fedora 19. Please close this bug report, it was not a coreutils issue and it has been fixed 5.5 years ago.
Regards, Rafal [1] https://sourceware.org/bugzilla/show_bug.cgi?id=14694 [2] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=3b81309
