id summary reporter owner description type status milestone component version severity resolution keywords cc 4688 std::runtime_error: locale::facet::_S_create_c_locale name not valid Gennady Proskurin Beman Dawes "Try to compile empty program: int main() {} And link it with boost_filesystem This program will crash throwing exception ""std::runtime_error: locale::facet::_S_create_c_locale name not valid"" on some systems (FreeBSD and some linuxes) when current locale (LANG,LC_ALL) is not ""C"" Systems are known to be affected: DragonFly BSD with boost 1.44 from pkgsrc FreeBSD 7.2-RELEASE with boost 1.44 may be suse linux: Sles 10 sp3 with boost 1.44 Locally, we have to use attached patch as workaround. " Bugs closed Boost 1.56.0 filesystem Boost 1.52.0 Showstopper fixed