- Boost-users - lists.preview.boost.org

[MPL]...if_ and enable_if
by Robert Jones 15 Mar '12

15 Mar '12

I'm having a bit of punt into the murky world of metaprogramming, so this might be a bit naive...! I've been using Boost.enable_if for a while, and now I've just encountered Boost.MPL.if_ and wonder if enable_if is simply a special case of MPL.if_. Given struct empty { }; template <typename T> struct my_condition : /* boost true_ or false_ */; is template <typename T> typename enable_if<my_condition<T>, int>::type f( ) { /* .... */ } the same as template <typename T> typename eval_if<my_condition<T>, identity<int>, empty>::type f( ) { /* ... */ } Or is there some subtlety I'm missing (which is quite likely!) Thx - Rob.

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[Graph] On Dijkstra SSSP performance
by Leo Hidd 15 Mar '12

15 Mar '12

Hello guys, I'm newbie on Boost, but thanks to some examples I found over the net I could make it work. Now I have a question on the performance of the dijkstra_shortest_paths function. The kind of graph I have is actually a 3D surface mesh, with each vertex being a node and each edge being an edge of the graph. So my graph is undirected, the number of edges is approximately 3 times the number of vertices (I typically have around 4 millions of vertices), the degree of the vertices is not constant, it varies between 3 and 12 (but 90% of the vertices have 5 or 6 neighbors) and the weight of the edges are the (3D Euclidean) distances between the adjacent vertices. As for the Boost lib, so far I'm using the classic adjacency_list<listS, vecS, undirectedS, no_property, < boost::edge_weight_t, Scalar > > graph_t type, with the dijkstra_shortest_paths function. But I feel the performance is very low compared to my implementation of Dijkstra algorithm. Dijkstra algorithm is very simple, so my implementation is a simple transcription of the text book in C language (I'm using Microsoft Visual Studio 2008). The data structure I'm using is a classic binary tree typedef struct tree_el { int idx; int source_idx; double dist; tree_el * right, * left; } node; and the functions I've implemented are insert (inserts a node with the smallest dist as the left most element or, in case of equality, it put the node with smallest idx as the left most element), remove_smallest (return the left most node and delete it from the tree) and remove_node (finds and return a given node and delete it from tree). The remove_node I use combined with insert whenever a given node has it's dist updated (in case new dist is smallest than the current one), so I remove the node, create a new one with the new dist (but same idx) and insert it into the tree (so that it will be always sorted). Well, since this is a real simple scholar case and that the performance is around 4 times faster than the dijkstra_shortest_paths function, which I call like this: std::vector<vertex_descriptor> p(num_vertices(g)); std::vector<Scalar> d(num_vertices(g)); vertex_descriptor s = vertex(A, g); dijkstra_shortest_paths (g, s, predecessor_map(make_iterator_property_map(p.begin(), get(vertex_index, g))). distance_map(make_iterator_property_map(d.begin(), get(vertex_index, g)))); I'm here to ask you how to make a better use of Boost in order to have performance at least in pair with what I have so far. I'm not concerned by the build time of the graph (add nodes/edges) since I do it only once and it remains the same all over my runtime. I'm only concerned by the SSSP itself, which I call thousands of times with different sources (I actually do multi source shortest path search) (all pairs is not a solution to me since I use way less sources than the total of nodes I have, and, for a graph with as much nodes as I have, I can't hold in memory all these distances). It seems to massively use STL containers (like vectors and lists) which maybe be the reason why it runs slower, but I'm not sure. Is there a way to use other graph type so that it can run faster? Thank you for your attention, leo

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Re: [Boost-users] C++ committee calling for lib proposals
by Brian Wood 15 Mar '12

15 Mar '12

> The C++ committee is calling for library proposals for their inclusion in C++11: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3370.html . > I think some of the boost libraries are good candidates, like the recently accepted boost::lockfree. Has anyone considered sending such proposal? I'm not sure how the committee feels about open code generation -- http://web.it.kth.se/~cschulte/projects/unison.php -- but I think moving in that direction could help revive library development. Regards, Brian Wood Ebenezer Enterprises http://webEbenezer.net "In a sort of *ghastly* *simplicity* we remove the organ and demand the function. ... We castrate and bid the geldings be *fruitful*." -- C.S. Lewis

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Problems using boost serializing and custom constructors
by Allan Nielsen 14 Mar '12

14 Mar '12

Hi I'm trying to use boost::serialize for the first time, but I have some troubles figuring out how to serialize a class like this: #include <vector> struct Foo { struct Bar { std::vector<int> * data; // Must point to Foo::data Bar( std::vector<int> * d ) : data(d) { } }; std::vector<int> data; std::vector<Bar> elements; Foo() { // do very time consuming calculation to populate "data" and "elements" } }; Here is what I have tried: struct Foo { struct Bar { std::vector<int> * data; Bar( ) : data( 0 ) { } Bar( std::vector<int> * d ) : data(d) { } template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & data; // is this correct? } }; std::vector<int> data; std::vector<Bar> elements; Foo() { std::cerr << "Running default constructor" << std::endl; data.push_back(1); data.push_back(2); data.push_back(3); data.push_back(4); data.push_back(5); elements.push_back( Bar( &data ) ); elements.push_back( Bar( &data ) ); elements.push_back( Bar( &data ) ); } template<class Archive> Foo( Archive & ar ) { ar >> data; // is this corrent? ar >> elements; } private: BOOST_SERIALIZATION_SPLIT_MEMBER(); friend class boost::serialization::access; template<class Archive> void save(Archive & ar, const unsigned int version) const { const std::vector<int> * data_ptr = &data; // should data be seriliazed as pointer... // it is used as a pointer in Bar ar << data_ptr; ar << elements; } }; int main(int argc, const char *argv[]) { #if 0 // serialize Foo foo; boost::archive::text_oarchive oar(std::cout); oar << foo; #else // deserialize boost::archive::text_iarchive oar(std::cin); Foo foo(oar); #endif std::cerr << foo.data.size() << std::endl; std::cerr << foo.elements.size() << std::endl; std::cerr << (&foo.data) << std::endl; for( const auto& a : foo.data ) std::cerr << a << " "; std::cerr << std::endl; for( const auto& a : foo.elements) std::cerr << a.data << " "; std::cerr << std::endl; return 0; } The only problem is that it does not work. After I deserialize Foo, data is still empty. Please advise me on how to do this properly. Best regards Allan W. Nieslen

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Przemyslaw SLIWA is out of the office.
by przemyslaw.sliwa＠uk.bnpparibas.com 14 Mar '12

14 Mar '12

I will be out of the office starting 14/03/2012 and will not return until 26/03/2012. I will respond to your message when I return. ___________________________________________________________ This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is prohibited. Please refer to http://www.bnpparibas.co.uk/en/information/legal_information.asp?Code=ECAS-… for additional disclosures. BNP Paribas is proud to sponsor David Hockney RA: A Bigger Picture at the Royal Academy, 21 January - 9 April 2012

1 0

[MPL] Fold a vector of pairs
by Peter Nyssen 14 Mar '12

14 Mar '12

Thanks for replying Jeff. I did try without the ::type's as shown below, but this fails to compile as well. Kind regards, Peter //------------------------------------- #include <boost/mpl/if.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct tag1 {}; struct tag2 {}; template <typename T> struct is_tag1 : boost::false_type {}; template <> struct is_tag1<tag1> : boost::true_type {}; int main() { typedef mpl::vector< mpl::pair<tag1, mpl::int_<1> >, mpl::pair<tag2, mpl::int_<2> >, mpl::pair<tag1, mpl::int_<3> > > initial_vector; typedef typename mpl::fold< initial_vector, mpl::pair<mpl::vector<>, mpl::vector<> >, mpl::if_< is_tag1<mpl::first<mpl::_2> >, mpl::push_back< mpl::first<mpl::_1>, mpl::second<mpl::_2> >, mpl::push_back< mpl::second<mpl::_1>, mpl::second<mpl::_2> > > >::type sorted_pair; return 0; } //------------------------------------- $ g++4 -Wall -I ../boost/ -o test test.cpp test.cpp: In function 'int main()': test.cpp:28: error: using 'typename' outside of template ../boost/boost/mpl/pair.hpp: At global scope: ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:39: instantiated from 'boost::mpl::quote1<boost::mpl::second, mpl_::void_>::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:39: instantiated from 'boost::mpl::apply_wrap1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:144: instantiated from 'boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:160: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:89: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/pair.hpp:56: error: no type named 'second' in 'struct boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>' ../boost/boost/mpl/push_back.hpp: In instantiation of 'boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:56: instantiated from 'boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>::apply<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:89: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/push_back.hpp:32: error: no class template named 'apply' in 'struct boost::mpl::push_back_impl<boost::mpl::non_sequence_tag>' ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:39: instantiated from 'boost::mpl::quote1<boost::mpl::first, mpl_::void_>::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:39: instantiated from 'boost::mpl::apply_wrap1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:144: instantiated from 'boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:160: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:91: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/pair.hpp:43: error: no type named 'first' in 'struct boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/push_back.hpp: In instantiation of 'boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:56: instantiated from 'boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>::apply<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:91: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/push_back.hpp:32: error: no class template named 'apply' in 'struct boost::mpl::push_back_impl<boost::mpl::non_sequence_tag>'

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Sunstudio 12.1 Patch
by Arno 14 Mar '12

14 Mar '12

Hi all, I have had a problem with Boost 1.42 on Solaris 10 an SunStudio 12 and found out, that there was a relation to a bug #3886. I do the required patch what I found there and the compilation worked afterwards. My question: Because we use this boost version for different platforms, how can I notice, if this patch is only for this platform or also for others. At least we use our configuration management for this issue and I have to now, if I can checkin this patch for all or only for some or at least only for this special platform. Can somebody give me an answer to that? regards Arno

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[MPL] Fold a vector of pairs
by Peter Nyssen 14 Mar '12

14 Mar '12

Nevermind. Removing the typename before mpl::fold fixes it. Kind regards, Peter //------------------------------------- #include <boost/mpl/if.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct tag1 {}; struct tag2 {}; template <typename T> struct is_tag1 : boost::false_type {}; template <> struct is_tag1<tag1> : boost::true_type {}; int main() { typedef mpl::vector< mpl::pair<tag1, mpl::int_<1> >, mpl::pair<tag2, mpl::int_<2> >, mpl::pair<tag1, mpl::int_<3> > > initial_vector; typedef mpl::fold< initial_vector, mpl::pair<mpl::vector<>, mpl::vector<> >, mpl::if_< is_tag1<mpl::first<mpl::_2> >, mpl::push_back< mpl::first<mpl::_1>, mpl::second<mpl::_2> >, mpl::push_back< mpl::second<mpl::_1>, mpl::second<mpl::_2> > > >::type sorted_pair; return 0; }

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[property_tree] if "ostream << string_path" missing ?
by Alain O Miniussi 14 Mar '12

14 Mar '12

Hi, I cannot find a direct way to output a string_path on an ostream. Is the feature simply missing or considered useless, and in this case, what is the rationale ? Thanks Alain

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build error using sharable_lock with -02 optimization
by Magallo 14 Mar '12

14 Mar '12

I'm trying to use the Boost.Interprocess library, mutexes, scoped_lock, sharable_lock etc... If I use a simple test program that uses mutex like this, I have no problem: void test1() { printf("test1 - timed_lock \n"); printf("trying to get exlusive lock within a timeout of 5 seconds\n"); boost::interprocess::named_mutex mutex(boost::interprocess::open_or_create, "MyExlusiveTimedMutex"); boost::posix_time::ptime abs_time = boost::posix_time::second_clock::universal_time() + boost::posix_time::seconds(5); if( mutex.timed_lock(abs_time) ) { printf("mutex acquired! do some processing...\n"); //...do some processing... printf("unlocking mutex, quit.\n"); mutex.unlock(); } else { printf("mutex not acquired, quit.\n"); } printf("end of test1\n"); } This test is ok, it builds with no problem. Then I try to use the scoped_lock functionalities: void test2() { //open or create the named mutex printf("creating mutex...\n"); boost::interprocess::named_mutex n_mutex(boost::interprocess::open_or_create, "ipc_pri_queue_mutex"); { printf("acquiring mutex scoped_lock...\n"); boost::interprocess::scoped_lock<boost::interprocess::named_mutex> sc_lock(n_mutex); printf("mutex scoped_lock acquired...\n"); //wait some time to simulate execution printf("execute program...\n"); sleep(10); printf("program excuted...\n"); } printf("out of scope, sharable_lock released\n"); } Also this test is ok, it builds with no problem. Finally, I try to use the sharable_lock and I get the error: void test3() { //open or create the named upgradable mutex printf("creating mutex...\n"); boost::interprocess::named_upgradable_mutex n_u_mutex(boost::interprocess::open_or_create, "ipc_pri_queue_upgradable_mutex"); { printf("acquiring mutex sharable_lock...\n"); boost::interprocess::sharable_lock<boost::interprocess::named_upgradable_mutex> sh_lock(n_u_mutex); printf("mutex sharable_lock acquired...\n"); //wait some time to simulate execution printf("execute program...\n"); sleep(10); printf("program excuted...\n"); } printf("out of scope, sharable_lock released\n"); } If I build this with -O2 optimization flag, I get this error: g++ -O2 -I /usr/local/boost_1_49_0 -c main.cpp -o main.o /usr/local/boost_1_49_0/boost/interprocess/detail/atomic.hpp: In member function 'void boost::interprocess::ipcdetail::managed_open_or_create_impl<DeviceAbstraction, MemAlignment, FileBased, StoreDevice>::priv_open_or_create(boost::interprocess::ipcdetail::create_enum_t, const typename boost::interprocess::managed_open_or_create_impl_device_id_t<DeviceAbstraction>::type&, size_t, boost::interprocess::mode_t, const void*, const boost::interprocess::permissions&, ConstructFunc) [with ConstructFunc = boost::interprocess::ipcdetail::named_creation_functor<boost::interprocess::interprocess_upgradable_mutex, boost::interprocess::ipcdetail::named_creation_functor_no_arg>, DeviceAbstraction = boost::interprocess::shared_memory_object, unsigned int MemAlignment = 0u, bool FileBased = true, bool StoreDevice = true]': /usr/local/boost_1_49_0/boost/interprocess/detail/atomic.hpp:316: internal compiler error: in rewrite_stmt, at tree-into-ssa.c:1380 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://forum.java.sun.com/forum.jspa?forumID=905> for instructions. *** Error code 1 make: Fatal error: Command failed for target `main.o' If I build this without the -O2 flag, the build is ok. Why this? Please help. I did this test on: OS: Solaris 10 5/09 s10s_u7wos_08 SPARC Compiler: sparc-sun-solaris2.10-g++ (GCC) 4.2.1 (20090222) (gccfss)

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