https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77582
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Patches goto gcc-patches@ and libstdc++@. Note !_GLIBCXX_USE_CXX11_ABI is most likely not going to be used for 90% of applications. It is only needed if you are linking between old binaries and using the new compiler.
