id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10842	Boost.Parameter: Class Template parameter can't be abstract	o0o0@…	Daniel Wallin	"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;
}"	Bugs	new	To Be Determined	parameter	Boost 1.56.0	Problem