I am trying to create tcp::acceptor and libtorrent::session side by side, but I get an access violation exception while waiting for input from std::cin . Access violation occurs in the Boost IOCP implementation, as shown by stack tracing.
- Windows 8.1
- MSVC 12.0 (Visual Studio 2013)
- boost v1.57.0
- libtorrent-rasterbar v1.0.3
A minimal example that allows me to reproduce the problem,
#include <boost/asio.hpp> #include <libtorrent/session.hpp> int main(int argc, char *argv[]) { boost::asio::io_service io_service; boost::asio::ip::tcp::acceptor acceptor(io_service); libtorrent::session s; std::string line; std::getline(std::cin, line); // <----- trigger return 0; }
Stack trace
lt_test.exe!boost::asio::detail::win_iocp_socket_service_base::do_open(boost::asio::detail::win_iocp_socket_service_base::base_implementation_type & impl, int family, int type, int protocol, boost::system::error_code & ec) Line 300 C++ lt_test.exe!boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::open(boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::implementation_type & impl, const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 192 C++ lt_test.exe!boost::asio::socket_acceptor_service<boost::asio::ip::tcp>::open(boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::implementation_type & impl, const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 144 C++ lt_test.exe!boost::asio::basic_socket_acceptor<boost::asio::ip::tcp,boost::asio::socket_acceptor_service<boost::asio::ip::tcp> >::open(const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 310 C++ lt_test.exe!libtorrent::aux::session_impl::setup_listener(libtorrent::listen_socket_t * s, boost::asio::ip::basic_endpoint<boost::asio::ip::tcp> ep, int & retries, bool v6_only, int flags, boost::system::error_code & ec) Line 2089 C++ lt_test.exe!libtorrent::aux::session_impl::open_listen_port(int flags, boost::system::error_code & ec) Line 2243 C++ lt_test.exe!libtorrent::aux::session_impl::init() Line 1258 C++ lt_test.exe!libtorrent::aux::session_impl::main_thread() Line 4880 C++ lt_test.exe!boost::_mfi::mf0<void,libtorrent::aux::session_impl>::operator()(libtorrent::aux::session_impl * p) Line 50 C++ lt_test.exe!boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> >::operator()<boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list0>(boost::_bi::type<void> __formal, boost::_mfi::mf0<void,libtorrent::aux::session_impl> & f, boost::_bi::list0 & a, int __formal) Line 254 C++ lt_test.exe!boost::_bi::bind_t<void,boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> > >::operator()() Line 21 C++ lt_test.exe!boost::asio::detail::win_thread::func<boost::_bi::bind_t<void,boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> > > >::run() Line 117 C++ lt_test.exe!boost::asio::detail::win_thread_function(void * arg) Line 118 C++ [External Code] [Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
Removing acceptor causes the access violation exception to disappear.
What causes this?