[Bug libstdc++/88101] Implement P0528R3, C++20 cmpxchg and padding bits

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88101

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-12-03
                 CC|                            |mpolacek at gcc dot gnu.org
     Ever confirmed|0                           |1