[Bug libstdc++/80316] std::promise treats no shared state as undefined

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80316

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |6.5
      Known to fail|                            |6.4.0, 7.1.0

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 6.5 and 7.2