Upgrading to 1.55 and BOOST_THREAD_VERSION=4 fixed the issue. Thanks. --- Aaron Wright From: Aaron_Wright@selinc.com To: boost-users@lists.boost.org Date: 11/15/2013 08:14 AM Subject: Re: [Boost-users] Can I return std::unique_ptr in a boost::future? Sent by: "Boost-users" <boost-users-bounces@lists.boost.org> Is this code expected to work then? I just need to upgrade my boost? I'm currently using 1.49. I just want to make sure before I go through the work of upgrading boost. --- Aaron Wright From: "Vicente J. Botet Escriba" <vicente.botet@wanadoo.fr> To: boost-users@lists.boost.org Date: 11/14/2013 11:28 PM Subject: Re: [Boost-users] Can I return std::unique_ptr in a boost::future? Sent by: "Boost-users" <boost-users-bounces@lists.boost.org> Le 15/11/13 02:05, Aaron_Wright@selinc.com a écrit :
I'm trying to return a std::unique_ptr in a boost::future. I can't get it to compile. Is it possible? The code wraps a packaged_task in a functor to make it copyable enough to pass to a boost::asio::io_service, where the work will be done in another thread. The code works for other return types that are copyable.
This is what I have for a small test case:
std::unique_ptr< int > get_int_impl(int i) { return std::unique_ptr< int >(new int(i)); }
std::unique_ptr< int > get_int(int i) { typedef boost::packaged_task< std::unique_ptr< int > > Task;
boost::shared_ptr< Task > task = boost::make_shared< Task
(boost::bind(&get_int_impl, 42)); boost::unique_future< std::unique_ptr< int > > future = task->get_future(); // <--- Error from this line.
m_service.post(boost::bind(&Task::operator(), task));
return future.get(); }
BOOST_AUTO_TEST_CASE(test_get_int) { BOOST_CHECK_EQUAL(*get_int(42), 42); }
The error:
boost/thread/future.hpp(239): error C2248: 'std::unique_ptr<_Ty>::unique_ptr' : cannot access private member declared in class 'std::unique_ptr<_Ty>' ---
Hi, please try defining BOOST_VERSION 4 and using boost::future instead and let me know. Best, Vicente _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users