[Bug libstdc++/106695] [11/12 Regression] Explicit copy constructor does not work for a parameter passed via std::async

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106695

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:da67352690c8ed7f3045487e6e1ea391aeab7fc8

commit r11-10242-gda67352690c8ed7f3045487e6e1ea391aeab7fc8
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Aug 22 15:42:17 2022 +0100

    libstdc++: Fix for explicit copy ctors in <thread> and <future> [PR106695]

    When I changed std::thread and std::async to avoid unnecessary move
    construction of temporaries, I introduced a regression where types with
    an explicit copy constructor could not be passed to std::thread or
    std::async. The fix is to add a constructor instead of using aggregate
    initialization of an unnamed temporary.

    libstdc++-v3/ChangeLog:

            PR libstdc++/106695
            * include/bits/std_thread.h (thread::_State_impl): Forward
            individual arguments to _Invoker constructor.
            (thread::_Invoker): Add constructor. Delete copies.
            * include/std/future (__future_base::_Deferred_state): Forward
            individual arguments to _Invoker constructor.
            (__future_base::_Async_state_impl): Likewise.
            * testsuite/30_threads/async/106695.cc: New test.
            * testsuite/30_threads/thread/106695.cc: New test.

    (cherry picked from commit 5abe0657553580bd1b7488dd84d55138a8d9f23c)