https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79348
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- See https://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_porting.html#build_hacking.configure.version but you don't want to do that to add new symbols to an old symbol version, that would hide a bug. Why have these symbols appeared now? Is TLS enabled by default on this target now? Did something change regarding TLS? Are you using the default configuration?
