https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113074
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- >This case fails in Clang with the expected outcome (it fails to resolve to a >valid call). No it fails the same way if you use libstdc++ from GCC. It fails that way if you use libc++ from the LLVM project. As far as I read the standard std::to_address does not have to be SFINAE safe.