[Boost-bugs] [Boost C++ Libraries] #3337: mpl::has_push_back_arg/mpl:::has_push_front_arg are incomplete types

Subject: [Boost-bugs] [Boost C++ Libraries] #3337: mpl::has_push_back_arg/mpl:::has_push_front_arg are incomplete types
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-08-11 17:55:50

#3337: mpl::has_push_back_arg/mpl:::has_push_front_arg are incomplete types
-------------------------------------+--------------------------------------
 Reporter:  cschmidt                 |       Owner:  agurtovoy
     Type:  Bugs                     |      Status:  new      
Milestone:  Boost 1.40.0             |   Component:  mpl      
  Version:  Boost Development Trunk  |    Severity:  Problem  
 Keywords:                           |  
-------------------------------------+--------------------------------------
 boost::mpl::has_push_back_arg
 ([https://svn.boost.org/trac/boost/browser/trunk/boost/mpl/aux_/push_back_impl.hpp?rev=54948#L28])
 and boost::mpl::push_front_arg
 ([https://svn.boost.org/trac/boost/browser/trunk/boost/mpl/aux_/push_front_impl.hpp?rev=54948#L28])
 are both declared but not defined.
 This leads to a compiler error when using mpl::has_push_back
 ([https://svn.boost.org/trac/boost/browser/trunk/boost/mpl/push_back.hpp?rev=54948#L40])
 / mpl::has_push_front
 ([https://svn.boost.org/trac/boost/browser/trunk/boost/mpl/push_front.hpp?rev=54948#L40])
 on a mpl sequence (to be precise a fusion sequence) which needs complete
 'argument' types when being instanced.

 Minimal testcase:[[BR]]
 #include <boost/mpl/transform.hpp>[[BR]]
 #include <boost/mpl/placeholders.hpp>[[BR]]
 #include <boost/fusion/container/vector.hpp>[[BR]]
 #include <boost/fusion/mpl.hpp>[[BR]]
 boost::mpl::transform<boost::fusion::vector<>,boost::mpl::_1>::type t;

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3337>
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