Boost.Parameter: Class Template parameter can't be abstract

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VS 2013 fails to compile when abstract class is passed as class template parameter with error "cannot instantiate abstract class". Sample:

#include <boost/parameter.hpp>

class Intf { public:

virtual void func() = 0;

};

BOOST_PARAMETER_TEMPLATE_KEYWORD(param)

template<class Arg> class P { public:

typedef typename boost::parameter::parameters<

boost::parameter::optional<tag::param>

::bind<Arg>::type args;

typedef typename boost::parameter::value_type<args, tag::param, void>::type param_type;

};

int main() {

P<param<Intf> > p;

return 0;

}