Header <boost/call_stack/frame.hpp>

namespace boost {
  namespace call_stack {
    class call_frame;
    template<typename AddrResolver, typename OutputFormatter> 
      class call_frame_info;

    struct terse_call_frame_formatter;
    struct fancy_call_frame_formatter;

    static const call_frame null_frame;
    void swap(call_frame & left, call_frame & right);
    template<typename AddrResolver, typename OutputFormatter> 
      void swap(call_frame_info< AddrResolver, OutputFormatter > & left, 
                call_frame_info< AddrResolver, OutputFormatter > & right);
  }
}namespace std {
  void swap(boost::call_stack::call_frame & left, 
            boost::call_stack::call_frame & right);
  template<typename AddrResolver, typename OutputFormatter> 
    void swap(boost::call_stack::call_frame_info< AddrResolver, OutputFormatter > & left, 
              boost::call_stack::call_frame_info< AddrResolver, OutputFormatter > & right);
}