[Bug libstdc++/65165] New: missing std::promise::set_value_at_thread_exit

[carlo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65165

            Bug ID: 65165
           Summary: missing std::promise::set_value_at_thread_exit
           Product: gcc
           Version: 4.9.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: carlo at gcc dot gnu.org

Assuming en.cppreference.com is right, this member function should exist since
C++11. See
http://en.cppreference.com/w/cpp/thread/promise/set_value_at_thread_exit

It exists/works in clang 3.5. I see no reference to this function anywhere on
gnu.org (ie, the status page), so I thought it might be something that has been
overlooked.