[Boost-users] [circular_buffer] problem compiling in VC80

From: Paul O'Neill (paul.boost_at_[hidden])
Date: 2007-07-02 02:33:25

The following code will not compile in MSVC80. It seems to be caused by an
attempt to access a private member which is made public for the unit testing
and so may not be caught by the boost unit tests. This was compiled against
the Main CVS on 30-Jun-2007. 

int main(int argc, char* argv[]) 
{ 
        boost::circular_buffer<int> cb(3); 
        return 0; 
} 

A look at the m_it that is referenced (error log below) shows that it is
private in when BOOST_CB_TEST is not defined. If I define this macro
everything works as expected. 

#if !defined(BOOST_CB_TEST) 
private: 
#endif // #if !defined(BOOST_CB_TEST) 
// Member variables 

    //! The circular buffer where the iterator points to. 
    const Buff* m_buff; 

    //! An internal iterator. 
    pointer m_it; 

Any ideas? Thanks, Paul. 

1>c:\sdk\boost\boost cvs\boost\boost\circular_buffer\debug.hpp(133) : error
C2248: 'boost::cb_details::iterator<Buff,Traits>::m_it' : cannot access
private member declared in class 'boost::cb_details::iterator<Buff,Traits>' 
1>        with 
1>        [ 
1>            Buff=boost::circular_buffer<int>, 
1>            Traits=boost::cb_details::nonconst_traits<std::allocator<int>> 
1>        ] 
1>        c:\sdk\boost\boost
cvs\boost\boost\circular_buffer\details.hpp(231) : see declaration of
'boost::cb_details::iterator<Buff,Traits>::m_it' 
1>        with 
1>        [ 
1>            Buff=boost::circular_buffer<int>, 
1>            Traits=boost::cb_details::nonconst_traits<std::allocator<int>> 
1>        ] 
1>        c:\sdk\boost\boost cvs\boost\boost\circular_buffer\base.hpp(1950)
: see reference to function template instantiation 'void
boost::cb_details::debug_iterator_registry::invalidate_iterators<boost::cb_details::iterator<Buff,Traits>>(const
Iterator &)' being compiled 
1>        with 
1>        [ 
1>            Buff=boost::circular_buffer<int>, 
1>           
Traits=boost::cb_details::nonconst_traits<std::allocator<int>>, 
1>           
Iterator=boost::cb_details::iterator<boost::circular_buffer<int>,boost::cb_details::nonconst_traits<std::allocator<int>>> 
1>        ] 
1>        c:\sdk\boost\boost cvs\boost\boost\circular_buffer\base.hpp(1947)
: while compiling class template member function 'void
boost::circular_buffer<T>::destroy_item(int *)' 
1>        with 
1>        [ 
1>            T=int 
1>        ] 
1>        i:\development\projects\test\test\main2.cpp(6) : see reference to
class template instantiation 'boost::circular_buffer<T>' being compiled 
1>        with 
1>        [ 
1>            T=int 
1>        ] 

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