Boost C++ Libraries: Ticket #9840: phoenix V3 and stl container non const methods

attachment set

Theodore.Papadopoulo@… — Sun, 06 Apr 2014 08:11:57 GMT

attachment → test.C

File to reproduce the problem

Theodore.Papadopoulo@… — Sun, 06 Apr 2014 08:14:43 GMT

I forgot, this is to be compiled with:

g++ -DBOOST_SPIRIT_USE_PHOENIX_V3 test.C

Joel de Guzman — Sun, 06 Apr 2014 11:44:11 GMT

Please post a test cpp file that does not use Spirit. A phoenix-only test will make it clear that this is a phoenix bug, if it is indeed a bug.

Mon, 07 Apr 2014 11:06:30 GMT

I cannot, I tried some obvious code, but I do not know phoenix much. Can you requalify it as a spirit bug ?

Joel de Guzman — Mon, 07 Apr 2014 13:42:08 GMT

Wait, I see the problem and it's not a phoenix bug nor a spirit bug. It's a usage bug.

1) L is captured by value, by default. Use ref if you want to capture by reference 2) Use boost::spirit::qi::_1 instead of boost::phoenix::arg_names::_1

Here's the working code:

    #include <boost/spirit/include/qi.hpp>
    #include <boost/spirit/include/phoenix.hpp>
    #include <boost/phoenix/stl.hpp>
    #include <boost/spirit/include/qi_uint.hpp>
    #include <boost/phoenix/phoenix.hpp>
    std::vector<unsigned> L;
    int
    main() {
        using namespace boost::spirit::qi;
        using namespace boost::phoenix;
        using boost::spirit::qi::_1;
        namespace phx = boost::phoenix;
        const std::string str("3 1 2 3");
        std::string::const_iterator first = str.begin();
        parse(first,str.end(), uint_[reserve(phx::ref(L),_1)] >> repeat(capacity(phx::cref(L)))[ uint_ ]);
    }

I'll leave it up to you to close this ticket.

status changed; resolution set

Joel de Guzman — Wed, 09 Apr 2014 01:30:54 GMT

status new → closed
resolution → invalid

I'm closing this one. Feel free to re-open if you have objections.