[Boost-bugs] [Boost C++ Libraries] #7619: Compiler error with move and packaged_task

Subject: [Boost-bugs] [Boost C++ Libraries] #7619: Compiler error with move and packaged_task
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-10-31 16:05:28

#7619: Compiler error with move and packaged_task
------------------------------------------------------+---------------------
 Reporter:  anonymous                                 |       Owner:  igaztanaga
     Type:  Bugs                                      |      Status:  new       
Milestone:  To Be Determined                          |   Component:  move      
  Version:  Boost 1.51.0                              |    Severity:  Regression
 Keywords:  move, packaged_task, futures, io_service  |  
------------------------------------------------------+---------------------
 Consider the following simple code:
 {{{
 // mt_test.cpp
 #include <boost/asio.hpp>
 #include <boost/move/move.hpp>
 #include <boost/thread.hpp>

 int process_data()
 {
         return 1;
 }

 int main()
 {
 boost::asio::io_service io_service;
 boost::asio::io_service::work work(io_service);

 boost::packaged_task<int> task(boost::bind(&process_data));
 io_service.post(boost::move(task));
 }
 }}}

 This generates the errors (using gcc version 4.6.3 and boost 1.51.0)
 {{{
  g++ -I ./boost_1_51_0/ mt_test.cpp -o mt_test
 In file included from ./boost_1_51_0/boost/asio/io_service.hpp:767:0,
                  from ./boost_1_51_0/boost/asio/basic_io_object.hpp:19,
                  from ./boost_1_51_0/boost/asio/basic_socket.hpp:19,
                  from
 ./boost_1_51_0/boost/asio/basic_datagram_socket.hpp:20,
                  from ./boost_1_51_0/boost/asio.hpp:20,
                  from mt_test.cpp:2:
 ./boost_1_51_0/boost/asio/impl/io_service.hpp: In member function ‘void
 boost::asio::io_service::post(const CompletionHandler&) [with
 CompletionHandler = boost::detail::thread_move_t<boost::packaged_task<int>
 >]’:
 mt_test.cpp:18:34:   instantiated from here
 ./boost_1_51_0/boost/asio/impl/io_service.hpp:95:67: error: no match for
 call to ‘(boost::detail::thread_move_t<boost::packaged_task<int> >) ()’
 In file included from
 ./boost_1_51_0/boost/asio/detail/handler_invoke_helpers.hpp:21:0,
                  from
 ./boost_1_51_0/boost/asio/detail/bind_handler.hpp:20,
                  from
 ./boost_1_51_0/boost/asio/detail/wrapped_handler.hpp:18,
                  from ./boost_1_51_0/boost/asio/io_service.hpp:24,
                  from ./boost_1_51_0/boost/asio/basic_io_object.hpp:19,
                  from ./boost_1_51_0/boost/asio/basic_socket.hpp:19,
                  from
 ./boost_1_51_0/boost/asio/basic_datagram_socket.hpp:20,
                  from ./boost_1_51_0/boost/asio.hpp:20,
                  from mt_test.cpp:2:
 ./boost_1_51_0/boost/asio/handler_invoke_hook.hpp: In function ‘void
 boost::asio::asio_handler_invoke(Function, ...) [with Function =
 boost::detail::thread_move_t<boost::packaged_task<int> >]’:
 ./boost_1_51_0/boost/asio/detail/handler_invoke_helpers.hpp:39:3:
 instantiated from ‘void
 boost_asio_handler_invoke_helpers::invoke(Function&, Context&) [with
 Function = boost::detail::thread_move_t<boost::packaged_task<int> >,
 Context = boost::detail::thread_move_t<boost::packaged_task<int> >]’
 ./boost_1_51_0/boost/asio/detail/completion_handler.hpp:67:7:
 instantiated from ‘static void
 boost::asio::detail::completion_handler<Handler>::do_complete(boost::asio::detail::io_service_impl*,
 boost::asio::detail::operation*, const boost::system::error_code&,
 std::size_t) [with Handler =
 boost::detail::thread_move_t<boost::packaged_task<int> >,
 boost::asio::detail::io_service_impl =
 boost::asio::detail::task_io_service, boost::asio::detail::operation =
 boost::asio::detail::task_io_service_operation, std::size_t = long
 unsigned int]’
 ./boost_1_51_0/boost/asio/detail/completion_handler.hpp:38:48:
 instantiated from
 ‘boost::asio::detail::completion_handler<Handler>::completion_handler(Handler&)
 [with Handler = boost::detail::thread_move_t<boost::packaged_task<int> >]’
 ./boost_1_51_0/boost/asio/detail/impl/task_io_service.hpp:61:3:
 instantiated from ‘void
 boost::asio::detail::task_io_service::post(Handler) [with Handler =
 boost::detail::thread_move_t<boost::packaged_task<int> >]’
 ./boost_1_51_0/boost/asio/impl/io_service.hpp:97:3:   instantiated from
 ‘void boost::asio::io_service::post(const CompletionHandler&) [with
 CompletionHandler = boost::detail::thread_move_t<boost::packaged_task<int>
 >]’
 mt_test.cpp:18:34:   instantiated from here
 ./boost_1_51_0/boost/asio/handler_invoke_hook.hpp:64:3: error: no match
 for call to ‘(boost::detail::thread_move_t<boost::packaged_task<int> >)
 ()’


 }}}

 I thought this was solved in [https://svn.boost.org/trac/boost/ticket/4521

 Ticket 4521]?

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7619>
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