https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66455
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, it's new for C++17. It was voted into the WP in November 2014.
