Sebastian Weber <sebastian.weber@physik.tu-darmstadt.de> writes:
/home/sebi/projects/diplom/src/boost_1_33_1/boost/graph/adjacency_list_io.hpp:151: error: 'boost::GraphParser<Graph_t, VertexProperty, EdgeProperty, VertexPropertySubset, EdgePropertySubset>::operator()(std::istream&) [with Graph_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, boost::no_property, boost::no_property, boost::no_property, boost::listS>, VertexProperty = boost::no_property, EdgeProperty = boost::no_property, VertexPropertySubset = boost::no_property, EdgePropertySubset = boost::no_property]::State' uses local type 'boost::GraphParser<Graph_t, VertexProperty, EdgeProperty, VertexPropertySubset, EdgePropertySubset>::operator()(std::istream&) [with Graph_t = boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, boost::no_property, boost::no_property, boost::no_property, boost::listS>, VertexProperty = boost::no_property, EdgeProperty = boos t::no_property, VertexPropertySubset = boost::no_property, EdgePropertySubset = boost::no_ property]::State'
This says that the GraphParser class -- which you apparently defined in namespace boost; naughty, naughty! -- has an operator() with a locally-defined type State, and you're trying to pass an instance of that type off to a function template. It's a rule of C++ that you can't instantiate templates on function-local types. Learning to read your compiler's error messages can be difficult, but it is well worth the effort. STLFilt can help to make them more approachable (http://www.bdsoft.com) HTH, -- Dave Abrahams Boost Consulting www.boost-consulting.com