[Boost-bugs] [Boost C++ Libraries] #10842: Boost.Parameter: Class Template can't be abstract

Subject: [Boost-bugs] [Boost C++ Libraries] #10842: Boost.Parameter: Class Template can't be abstract
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-12-03 08:52:38

#10842: Boost.Parameter: Class Template can't be abstract
------------------------------+-----------------------
 Reporter:  o0o0@…            |      Owner:  danielw
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  parameter
  Version:  Boost 1.56.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+-----------------------
 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;
 }

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10842>
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