Hi, I'm experiencing a compiling problem with boost.statechart. I created a template class called request<TCallBackType> derived from state_machine, and two template states called init<TCallBackType> and post<TCallBackType>, the idea is that request's initial states is init, and when recating to an event (initialize) it transits to post. The error i get is : sc_test.cpp: In member function ‘boost::statechart::result init<TCallBackType>::react(const initialize&)’: sc_test.cpp:38: error: expected primary-expression before ‘>’ token sc_test.cpp:38: error: expected primary-expression before ‘)’ token I'm pretty sure this has to be with the fact that the template method transit is here dependant of the template parameter, thus the compiler can't solve it, but I can't seem to figure it out. Tryed using typename but did not work. I'm using gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3 Any help will be aprecciated. Here's the code, there is a comment where the error occurs. #include <boost/statechart/event.hpp> #include <boost/statechart/state_machine.hpp> #include <boost/statechart/simple_state.hpp> #include <boost/statechart/state.hpp> #include <boost/statechart/transition.hpp> #include <boost/statechart/custom_reaction.hpp> #include <boost/mpl/list.hpp> namespace sc = boost::statechart; //FORWARD DECLARATION OF THE INITIAL STATE template<typename TCallBackType> struct init; template<typename TCallBackType> struct post; //STATE MACHINE template<typename TCallBackType> struct request : sc::state_machine<request<TCallBackType> , init<TCallBackType> > { TCallBackType call_backs; }; //EVENT struct initialize : sc::event<initialize> { }; //INITIAL STATE template<typename TCallBackType> struct init : sc::simple_state< init<TCallBackType>, request<TCallBackType>

{

//reactions typedef boost::mpl::list< sc::custom_reaction<initialize>

reactions;

//on initialize sc::result react(const initialize& e){ //HERE I GET THE COMPILING ERROR //IF I COMMENT THIS IT ALL GOES SMOOTHLY return this->transit< post<TCallBackType> > (); } typedef post<TCallBackType> p; }; //SECOND STATE template<typename TCallBackType> struct post : sc::simple_state< post<TCallBackType>, request<TCallBackType>

{

//reactions typedef boost::mpl::list< sc::custom_reaction<initialize>

reactions;

//on initialize sc::result react(const initialize& e){ return this->discard_event(); } }; int main(int argc, char* argv[]){ request<int> r; r.initiate(); return 0; } Nicolas Emiliani.