Usage of `boost::phoenix::static_cast_` mixed with standard library

Question

It is a Phoenix v3 bug. It compiles with Phoenix v2 just fine. I did bug report. I will mark this question as resolved in 2 days. Thank you all.

I am trying to make a short lamba with phoenix, but I get bunch of compile errors. Here is the code.

std::vector<unsigned char> data;
using boost::phoenix::arg_names::_1;
using boost::phoenix::static_cast_;
std::ostringstream oss;
oss << std::hex;
//Doesn't compile
std::for_each(data.begin(),data.end(), oss <<  static_cast_<unsigned int>(_1) );
//Compiles
std::for_each(data.begin(),data.end(), oss << _1 );

Now I get the following compile error from GCC 4.6.1: /usr/include/boost/utility/result_of.hpp:-1: In instantiation of ‘boost::detail::result_of_nested_result<boost::phoenix::static_cast_eval, boost::phoenix::static_cast_eval(boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>&, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> >&, boost::phoenix::vector2<boost::phoenix::vector2<const boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::shift_left, boost::proto::argsns_::list2<boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<std::basic_ostringstream<char>&>, 0l> >, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::phoenix::tag::static_cast_, boost::proto::argsns_::list2<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> > >, 2l> > >, 2l> >*, unsigned char&>&, const boost::phoenix::default_actions&>)>’:

/usr/include/boost/phoenix/object/static_cast.hpp:29: error: declaration of ‘struct boost::phoenix::static_cast_eval::result<boost::phoenix::static_cast_eval(boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>&, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> >&, boost::phoenix::vector2<boost::phoenix::vector2<const boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::shift_left, boost::proto::argsns_::list2<boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<std::basic_ostringstream<char>&>, 0l> >, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::phoenix::tag::static_cast_, boost::proto::argsns_::list2<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> > >, 2l> > >, 2l> >*, unsigned char&>&, const boost::phoenix::default_actions&>)>’

/usr/include/boost/phoenix/core/detail/preprocessed/call_10.hpp:65: error: no type named ‘type’ in ‘struct boost::result_of<boost::phoenix::static_cast_eval(boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>&, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> >&, boost::phoenix::vector2<boost::phoenix::vector2<const boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::shift_left, boost::proto::argsns_::list2<boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<std::basic_ostringstream<char>&>, 0l> >, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::phoenix::tag::static_cast_, boost::proto::argsns_::list2<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::detail::target<unsigned char> >, 0l>, boost::phoenix::actor<boost::proto::exprns_::basic_expr<boost::proto::tag::terminal, boost::proto::argsns_::term<boost::phoenix::argument<1> >, 0l> > >, 2l> > >, 2l> >*, unsigned char&>&, const boost::phoenix::default_actions&>)>’

Answer 1

Both compiles here on both GCC & MSVC, if I would have a stab at it I would guess that the offender is:

using boost::phoenix::arg_names::_1;

There's other placeholders with the very same name, some imported to the global scope ( I believe the one boost::bind uses is in the global scope for example ). The last error in particular hints at this, as it would seem a type that is required to be a meta function isn't is used somewhere.