[Bug c++/82635] std::thread's join broken on FreeBSD with all GCCs >= 5

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82635

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 82634 has been marked as a duplicate of this bug. ***