Just came across this recent message on one of GCC's mailing lists (no replies yet): https://gcc.gnu.org/ml/gcc-help/2017-02/msg00080.html
Similarly, there is a known issue with libstdc++ on (older) versions of Mac OS X (before the switch to clang and libc++ as default): C++ locale only supports C, POSIX https://mail.gnome.org/archives/gtkmm-list/2010-April/msg00030.html
Just came across this recent message on one of GCC's mailing lists (no replies yet): /gcc.gnu. org/ml/ gcc-help/ 2017-02/ msg00080. html
https:/
Similarly, there is a known issue with libstdc++ on (older) versions of Mac OS X (before the switch to clang and libc++ as default): C++ locale only supports C, POSIX /mail.gnome. org/archives/ gtkmm-list/ 2010-April/ msg00030. html
https:/