[Bug libstdc++/113074] std::to_address should be SFINAE safe

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113074

--- Comment #18 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See http://cplusplus.github.io/LWG/lwg-active.html#submit_issue