https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119144
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- Oh and the test uses std::string fails with -D_GLIBCXX_USE_CXX11_ABI=0 because the COW std::string isn't usable in constexpr. Sorry for not noticing these earlier.
