[Bug libstdc++/68912] Wrong value category used in _Bind functor

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68912

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Dec 15 14:17:17 2015
New Revision: 231652

URL: https://gcc.gnu.org/viewcvs?rev=231652&root=gcc&view=rev
Log:
Fix cv-qualifiers in std::bind invocation

        PR libstdc++/68912
        * include/std/functional (_Bind::operator()): Use lvalue functor to
        deduce return type.
        * testsuite/20_util/bind/68912.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/20_util/bind/68912.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/functional