/usr/sbin/locale-gen: line 243: 5853 Floating point exception(core dumped)

Running:

$ sudo locale-gen en_US en_US.UTF-8
Generating locales...
  en_US.ISO-8859-1... /usr/sbin/locale-gen: line 243: 10624 Floating point exception(core dumped) localedef $no_archive -i $input -c -f $charset $locale_alias $locale
failed
  en_US.UTF-8... /usr/sbin/locale-gen: line 243: 10652 Floating point exception(core dumped) localedef $no_archive -i $input -c -f $charset $locale_alias $locale
failed
Generation complete.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: locales 2.13+git20120306-9
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Sun Jan 5 18:30:08 2014
Dependencies:
 gcc-4.8-base 4.8.2-10ubuntu2
 libc6 2.18-0ubuntu2
 libgcc1 1:4.8.2-10ubuntu2
 multiarch-support 2.17-93ubuntu4
InstallationDate: Installed on 2013-07-18 (171 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: langpack-locales
UpgradeStatus: Upgraded to trusty on 2014-01-05 (0 days ago)