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

[andreast at gcc dot gnu.org]

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

--- Comment #16 from Andreas Tobler <andreast at gcc dot gnu.org> ---
Author: andreast
Date: Sun Nov  5 19:30:41 2017
New Revision: 254431

URL: https://gcc.gnu.org/viewcvs?rev=254431&root=gcc&view=rev
Log:
2017-11-05  Andreas Tobler  <andreast@gcc.gnu.org>

    Backport from mainline
    2017-11-04  Andreas Tobler  <andreast@gcc.gnu.org>

    PR libgcc/82635
    * config/i386/freebsd-unwind.h (MD_FALLBACK_FRAME_STATE_FOR): Use a
    sysctl to determine whether we're in a trampoline.
    Keep the pattern matching method for systems without
    KERN_PROC_SIGTRAMP sysctl.

Modified:
    branches/gcc-7-branch/libgcc/ChangeLog
    branches/gcc-7-branch/libgcc/config/i386/freebsd-unwind.h