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POCompilation error when including boost/thread.cpp
 

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  1. POCompilation error when including boost/thread.cpp
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    <p>I have the following code using Boost ASIO to setup a TCP client. Here is my code adapted from the Boost doc's <a href="http://www.boost.org/doc/libs/1_50_0/doc/html/boost_asio/example/chat/chat_client.cpp" rel="nofollow">chat example</a>.</p> <pre><code>class AsioCommunicationService { AsioCommunicationService::AsioCommunicationService( boost::asio::io_service&amp; io_service, tcp::resolver::iterator endpoint_iterator) : io_service_(io_service), socket_(io_service) { tcp::endpoint endpoint = *endpoint_iterator; socket_.async_connect(endpoint, boost::bind(&amp;AsioCommunicationService::handle_connect, this, boost::asio::placeholders::error, ++endpoint_iterator)); } void AsioCommunicationService::handle_connect(const boost::system::error_code&amp; error, tcp::resolver::iterator endpoint_iterator) { if (!error) { boost::asio::async_read(socket_, boost::asio::buffer(read_msg_.data(), LampMessage::header_length), boost::bind(&amp;AsioCommunicationService::handle_read_header, this, boost::asio::placeholders::error)); } } } class Connection { //init io_service, query, resolve, iterator here boost::asio::io_service io_service; boost::asio::ip::tcp::resolver resolver(io_service); boost::asio::ip::tcp::resolver::query query(host, service); boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve(query); m_session = std::shared_ptr&lt;AsioCommunicationService&gt;( new AsioCommunicationService(io_service, iterator)); //start new thread for io_service.run --&gt; GOT AN ERROR when include boost/thread.hpp boost::thread t(boost::bind(&amp;boost::asio::io_service::run, &amp;io_service)); //this synchronous command would work, but it's blocking the program. I don't want that. //io_service.run(); } </code></pre> <p>Of course, I needed to include boost/thread to make the declaration to variable t in class Connection works. But when I did so, I got this error</p> <pre><code>#include &lt;boost/thread.hpp&gt; //ERROR: In function ‘boost::thread&amp;&amp; boost::move(boost::thread&amp;&amp;)’: ///usr/include/boost/thread/detail/thread.hpp:349:16: error: invalid initialization of reference of type ‘boost::thread&amp;&amp;’ from expression of type ‘boost::thread’ //In file included from /usr/include/boost/thread/detail/thread_heap_alloc.hpp:17:0, // from /usr/include/boost/thread/detail/thread.hpp:13, // from /usr/include/boost/thread/thread.hpp:22, // from /usr/include/boost/thread.hpp:13, // from /home/son/dev/logistics/src/frameworks/networkService/NetworkConnection.cpp:13: ///usr/include/boost/thread/pthread/thread_heap_alloc.hpp: In function ‘T* boost::detail::heap_new(A1&amp;&amp;) [with T = boost::detail::thread_data&lt;void (*)()&gt;, A1 = void (*&amp;)()]’: ///usr/include/boost/thread/detail/thread.hpp:130:95: instantiated from here ///usr/include/boost/thread/pthread/thread_heap_alloc.hpp:24:47: error: cannot bind ‘void (*)()’ lvalue to ‘void (*&amp;&amp;)()’ ///usr/include/boost/thread/detail/thread.hpp:43:13: error: initializing argument 1 of ‘boost::detail::thread_data&lt;F&gt;::thread_data(F&amp;&amp;) [with F = void (*)()]’ </code></pre> <p>It would compile and work if I remove the include to boost/thread.hpp, and replace the declaration to t by a simple call to io_service.run(); I'm wondering if this compilation error has to do with boost version. I'm using Boost ASIO 1.42, Ubuntu 11.04 and Eclipse if those are of any help. Thank you in advance.</p>
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      1. VTUpMod
    1. COCan you try to strip this down to a small self-contained example, so people can experiment with it?
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      1. POCompilation error when including boost/thread.cpp
      1. USMvG
    2. COBoost 1.42 is quite dated (from 2010 afaics). At least some of the error messages refer to rvalue references, which are part of the C++11 standard and must have been pretty bleeding edge at that time. There might still have been a number of rough edges. I'd try a recent version of boost and see whether that solves your problems.
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      1. POCompilation error when including boost/thread.cpp
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    3. COthanks @MvG, basically I got those errors when I put the include <boost/thread.hpp> in my code. The rest doesn't concern I think.
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