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Solaris Sun Studio 12, boost 1.44 - choosing version of STL
by Paulo Moura Guedes 22 Nov '10

22 Nov '10

Hi, I want to use the standard Solaris STL libCstd, so I'm using the "stdlib=native" switch in bjam. However, stlport4 is being picked up. How can I force boost not to use stlport4? Thanks in advance, Paulo

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Linker error on windows
by Lars Mogensen 22 Nov '10

22 Nov '10

Hi, I am using BOOST to do math and have not been able to get the "findroot_demo.cpp" example of root finding to work. There seem to be a reference to rint(), which is not implemented in the C++ library for windows. How can I solve this - my understanding of BOOST is that it is cross-platform? 1>------ Build started: Project: boostfindzero, Configuration: Debug Win32 ------ 1>Compiling... 1>findroot_demo.cpp 1>Linking... 1>findroot_demo.obj : error LNK2019: unresolved external symbol _rint referenced in function "public: static double __cdecl boost::numeric::interval_lib::detail::x86_rounding::to_int(double const &)" (?to_int@x86_rounding@detail@interval_lib@numeric@boost@@SANABN@Z) 1>D:\dokumenter\lvm_AM\Visual Studio 2008\Projects\boostfindzero\Debug\boostfindzero.exe : fatal error LNK1120: 1 unresolved externals 1>Build log was saved at "file://d:\dokumenter\lvm_AM\Visual Studio 2008\Projects\boostfindzero\boostfindzero\Debug\BuildLog.htm" 1>boostfindzero - 2 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Thanks in advance. /Lars

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boost::Asio async_accept not throwing exception
by Lloyd Kanakkassery 22 Nov '10

22 Nov '10

Hi, I have modified the sample program provided in the asio samples, just to accept a connection like this void TCPServer::StartAccept() { try { TCPConnection::Pointer NewConnection=TCPConnection::Create(Acceptor.io_service()); Acceptor.async_accept(NewConnection->socket(),boost::bind(&TCPServer::HandleAccept,this, NewConnection,boost::asio::placeholders::error)); } catch(std::exception& e) { cout<<"exception"<<endl; } } Another program is already listening on the port "13" (A service version of the same program). When this new program tries to listen (async_accept) on port "13", no exception is thrown!. How can I check weather the port is already open? Thanks, Lloyd

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boost::asio socket as class member
by Claude 22 Nov '10

22 Nov '10

Hi! I want to put a boost::asio::ip::tcp::socket as a private member of my class and then create the object in one of the class methods. I actually use this code: class myClass{ private: boost::asio::io_service io_service; boost::asio::ip::tcp::socket s; }; But this code don't work (don't compile). Why? -- View this message in context: http://boost.2283326.n4.nabble.com/boost-asio-socket-as-class-member-tp3047… Sent from the Boost - Users mailing list archive at Nabble.com.

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problem of opcode not supported on mipsel for Boost_1_39_0
by Yan Wu 22 Nov '10

22 Nov '10

Hi, I got an error when building OpenOffice.org on mipsel platform, the error is following: Compiling: comphelper/source/misc/logging.cxx {standard input}: Assembler messages: {standard input}:101: Error: opcode not supported on this processor: mips1 (mips1) `ll $3,8($4)' {standard input}:103: Error: opcode not supported on this processor: mips1 (mips1) `sc $2,8($4)' {standard input}:141: Error: opcode not supported on this processor: mips1 (mips1) `ll $3,4($4)' {standard input}:143: Error: opcode not supported on this processor: mips1 (mips1) `sc $2,4($4)' dmake: Error code 1, while making '../../unxlngmips.pro/slo/logging.obj' The <boost/shared_ptr.hpp>, Boost_1_39_0, is used in the above logging.cxx. Is this a bug for the smart_ptr on mipsel platform ? I found there was a similar bug 2972(https://svn.boost.org/trac/boost/ticket/2972). But I notice that the fix for 2972 is not integrated to the current milestone yet. Right? Where can I find the fix for this bug ? Best Regards, Yan

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[MPI] lifetime of data sent through communicator::isend()
by Riccardo Murri 21 Nov '10

21 Nov '10

Hello, I'm using mpi::communicator::isend where the payload data comes from a pointer (e.g., "req = comm_.isend(dest, tag. *data)"). When am I free to "delete" the pointer? Immediately after isend() returns? Or should I wait until the request is completed? Does setting BOOST_MPI_HOMOGENEOUS have any influence on this? Best regards, Riccardo

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[proto] Unable to display_expr a spirit expression
by Marcin Zalewski 21 Nov '10

21 Nov '10

Hello. I have a following program: #include <boost/spirit/include/qi.hpp> #include <boost/spirit/include/phoenix_core.hpp> #include <boost/proto/core.hpp> int main () { // boost::proto::display_expr(boost::phoenix::arg_names::arg1); boost::proto::display_expr(boost::spirit::int_[boost::phoenix::arg_names::arg1]); } That works as expected: subscript( terminal(N5boost6spirit3tag4int_E) , terminal(N5boost7phoenix5actorINS0_8argumentILi0EEEEE) ) When I include <boost/spirit/home/phoenix/operator.hpp> (as the last include), however, the output of the program changes to: subscript( terminal(N5boost6spirit3tag4int_E) , terminal() I am not sure if this is expected, unsupported, or a bug. Anyone? Just to put this in context, I am trying to figure out how does spirit intercept phoenix expressions (e.g., in semantic actions) to wrap them in proto terminals. The infrastructure of spirit is rather complex, so if anyone can point me in the right direction, I would really appreciate it. -m

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[asio] INET_ADDRSTRLEN undeclared under cygwin
by Igor R 21 Nov '10

21 Nov '10

Hello, I build my project under Cygwin, and get errors like this: .../boost/asio/detail/socket_types.hpp:125: error: 'INET_ADDRSTRLEN' was not declared in this scope I see that INET_ADDRSTRLEN is defined in /usr/include/cygwin/in.h , but asio doesn't include it. Besides, there're some more undefined macros, which are defined in /usr/include/cygwin/in6.h Meanwhile I apply an ad-hoc solution, but I'm wondering if someone else encountered this issue and what would be the right solution. Thanks.

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serialization over memory mapped files
by Sadhan Sood 21 Nov '10

21 Nov '10

Hi , I want to serialize my class objects ona memory mapped file. I am able to write to the file but reading is throwing me exceptions: namespace io = boost::iostreams; typedef io::stream_buffer<io::mapped_file_source> in_streambuf; typedef io::stream_buffer<io::mapped_file_sink> out_streambuf; int main() { // create and open a character archive for output // std::ofstream ofs("filename"); boost::iostreams::mapped_file_params params; params.path = "filepath"; params.flags = io::mapped_file::mapmode::readwrite; params.new_file_size = 10240; out_streambuf obuf(params); std::ostream ofs(&obuf); // create class instance const gps_position g(35, 59, 24.567f); // save data to archive { boost::archive::text_oarchive oa(ofs); // write class instance to archive oa << g; // archive and stream closed when destructors are called } /* ready for reading */ params.flags = io::mapped_file::mapmode::readonly; params.new_file_size = 0; // ... some time later restore the class instance to its orginal state gps_position newg; { // create and open an archive for input in_streambuf ibuf(params); /* this is throwing me exceptions */ std::istream ifs(&ibuf); //std::ifstream ifs("filename"); boost::archive::text_iarchive ia(ifs); // read class state from archive ia >> newg; // archive and stream closed when destructors are called } return 0; } Any help is appreciated. Thanks, Sadhan

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Re: [Boost-users] [smart_ptr] Multiple inheritance problem with smart pointer
by José Augusto Jr. 21 Nov '10

21 Nov '10

Hi All, I'm trying to begin using smart pointers, and when I changed my typedefs like: typedef TimeSeriesClass* pTimeSeries; to typedef boost::shared_ptr<TimeSeriesClass> pTimeSeries; where: class TimeSeriesClass : public wxGridTableBase, public tsObject { (...) } I get an error in this situation: myDataAnalyserFrame::myDataAnalyserFrame( wxWindow* parent , pTimeSeries myTimeSeries) : DataAnalyserFrame( parent ) { m_myTimeSeries = myTimeSeries; m_tsOld = new wxGridStringTable( 1, 1 ); DataGrid->SetTable(m_myTimeSeries ,false); => the m_myTimeSeries, whis is a smart pointer to the TimeSeriesClass, doesn't know that TimeSeriesClass is also wxGridTableBase child? m_myTimeSeries->AutoSizeColsLabels(); DataGrid->Refresh(); } bool SetTable( wxGridTableBase *table, bool takeOwnership = false, wxGrid::wxGridSelectionModes selmode = wxGrid::wxGridSelectCells ); The problem occurs because the smart_pointer to the TimeSeriesClass seems to ignore that TimeSeriesClass is also a wxGridTableBase. With normal pointers it functions. Why it does not work? What i'm doing wrong? Thanks in advance. Best Regards. José Augusto

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