https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113202
Xi Ruoyao <xry111 at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xry111 at gcc dot gnu.org --- Comment #10 from Xi Ruoyao <xry111 at gcc dot gnu.org> --- And "possible implementation" is just one of the infinite allowed implementations. libstdc++ can use a different implementation for speed/simplicity/whatever as long as it does not violate the standard.