[Boost-users] [concept]

Subject: [Boost-users] [concept]
From: er (erwann.rogard_at_[hidden])
Date: 2010-03-21 10:41:38

Hello,

With gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9). This
 
BOOST_CONCEPT_ASSERT((boost::SinglePassRangeConcept<boost::array<int,8u>>));

is greeted with the warning below, which is annoying. It appears that 
the reference T&

     template<typename T>
     struct SinglePassRangeConcept
     {

     private:
        T& m_range;
     };

is causing it, but can be eliminated by replacing T& by static T& 
m_range. Perhaps there is a good reason for T& rather than static T& so 
I stopped short of putting a request in trac. Please advise. Thanks.

../../Reposetories/boost/trunk/boost/concept/detail/has_constraints.hpp|42|instantiated 
from ‘const bool 
boost::concepts::not_satisfied<boost::SinglePassRangeConcept<boost::array<int, 
8u> > >::value’|
../../Reposetories/boost/trunk/boost/concept/detail/has_constraints.hpp|45|instantiated 
from 
‘boost::concepts::not_satisfied<boost::SinglePassRangeConcept<boost::array<int, 
8u> > >’|
../../Reposetories/boost/trunk/boost/mpl/if.hpp|67|instantiated from 
‘boost::mpl::if_<boost::concepts::not_satisfied<boost::SinglePassRangeConcept<boost::array<int, 
8u> > >, 
boost::concepts::constraint<boost::SinglePassRangeConcept<boost::array<int, 
8u> > >, 
boost::concepts::requirement<boost::concepts::failed************ 
boost::SinglePassRangeConcept<boost::array<int, 8u> >::************> >’|
../../Reposetories/boost/trunk/boost/concept/detail/general.hpp|20|instantiated 
from ‘boost::concepts::requirement_<void 
(*)(boost::SinglePassRangeConcept<boost::array<int, 8u> >)>’|
/home/me/Reposetories/boost/sanbox/statistics/detail/assign/libs/assign/example/chain.cpp|42|instantiated 
from here|
../../Reposetories/boost/trunk/boost/range/concepts.hpp|209|warning: 
non-static reference ‘boost::array<int, 8u>& 
boost::SinglePassRangeConcept<boost::array<int, 8u> >::m_range’ in class 
without a constructor|
/home/me/Reposetories/boost/sanbox/statistics/detail/assign/libs/assign/example/chain.cpp||In 
function ‘void example_ch