https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89519
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Matt Whitlock from comment #3) > For instance, the ABI of std::string differs between C++98 and C++11. No it doesn't. https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html