#include <boost/fusion/include/invoke.hpp>
#include <boost/fusion/include/vector.hpp>

struct F {
    typedef void result_type;
    void operator()(int&) const {}
};

int main (int argc, char* argv[])
{
    boost::fusion::vector<int> v(1);
    // Error when decltype-based result_of is used;
    // trying to instantiate result_of<F(const int&)>
    boost::fusion::invoke(F(), v);

    return 0;
}