[Bug libstdc++/62023] [4.10 regression] 30_threads/condition_variable_any/50862.cc FAILs

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62023

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That exception comes from here in src/c++11/thread.cc

  void
  thread::_M_start_thread(__shared_base_type __b)
  {
    if (!__gthread_active_p())
#if __EXCEPTIONS
      throw system_error(make_error_code(errc::operation_not_permitted),
             "Enable multithreading to use std::thread");

Which means the __gthread_active_p() function in libgcc/gthr-posix.h is
returning false (I think the "Not owner" part is a red herring, due to the
errc::operation_not_permitted enum having the wrong value on Solaris)