[Bug libstdc++/79486] [7 Regression] packaged_task uses wrong value category with result_of

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79486

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Feb 13 13:13:29 2017
New Revision: 245386

URL: https://gcc.gnu.org/viewcvs?rev=245386&root=gcc&view=rev
Log:
PR libstdc++/79486 use lvalues in result_of expressions

        PR libstdc++/79486
        * include/std/future (__future_base::_Task_state::_M_run)
        (__future_base::_Task_state::_M_run_delayed): Use lvalue types in
        result_of expressions.
        * testsuite/30_threads/packaged_task/79486.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/30_threads/packaged_task/79486.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/future