https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107784
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- It already has such a mode, and has done for many many years. See --enable-symvers=gnu-versioned-namespace https://gcc.gnu.org/onlinedocs/libstdc++/manual/configure.html Nobody bothers to use it, so maintaining another std::tuple implementation for a single digit number of users isn't worth it.