[Bug libstdc++/57336] [4.8/4.9 Regression] Cannot INVOKE a reference_wrapper around an abstract type

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57336

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.8.1

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed.

N.B. Daniel pointer out this was LWG 2017.