[Bug libstdc++/78490] [c++17] libstdc++ has undefined behavior in operator= of propagate_const

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78490

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |6.3

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for 6.3