Example simple_wget crashing from time to time with error:
boost thread: trying joining itself: Resource deadlock avoided

How to reproduce

I turn off wi-fi and run command:
simple_wget https://example.com/some/archive.tar.gz

Usually command exits with code 1 and message:

Saving to: archive.tar.gz
Host not found (authoritative)

which is expected and good, but sometimes application crash in libc++ with message:

libc++abi.dylib: terminating with unexpected exception of type boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::thread_resource_error> >: boost thread: trying joining itself: Resource deadlock avoided
Process 75882 stopped

Backtrace can be found here

I can guess that exception which is thrown from join trigger std::terminate
because destructor has nothrow type (async_impl.h):

      ~async_client() throw ()
      {
        sentinel_.reset();
        if (lifetime_thread_.get()) {
          lifetime_thread_->join(); // BOOM!
          lifetime_thread_.reset();
        }
      }

Some tests

• 5 crash from 1000 run
• 36 crash from 10000 run

Environment

• Mac OS X 10.9.1, boost 1.55 (debug build with libc++), openssl (system)
• iOS, boost 1.55 (debug build with libc++), openssl 1.0.1e
• I'm using cpp-netlib-0.10.1, but cpp-netlib-0.11.0-rc3 has same behaviour

Also I've tried it on my virtual machine with Mac OS X 10.8.5 (which not using wi-fi),
there is no crashes.