Hello, my application which was successfully compiled on VS2010 brings the next errors using VS2012 c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\basic_logger.hpp(227): error C2664: 'std::pair<_Ty1,_Ty2> boost::log_mt_nt5::basic_attribute_set<CharT>::insert(const std::pair<const boost::log_mt_nt5::basic_slim_string<CharT>,boost::log_mt_nt5::basic_attribute_set<CharT>::mapped_type> )' : cannot convert parameter 1 from 'std::pair<_Ty1,_Ty2>' to 'const std::pair<_Ty1,_Ty2> &' 4> with 4> [ 4> _Ty1=boost::log_mt_nt5::basic_attribute_set<char>::iter<false>, 4> _Ty2=bool, 4> CharT=char 4> ] 4> and 4> [ 4> _Ty1=std::basic_string<char,std::char_traits<char>,std::allocator<char>>, 4> _Ty2=boost::shared_ptr<boost::log_mt_nt5::attribute> 4> ] 4> and 4> [ 4> _Ty1=const boost::log_mt_nt5::basic_slim_string<char>, 4> _Ty2=boost::log_mt_nt5::basic_attribute_set<char>::mapped_type 4> ] 4> Reason: cannot convert from 'std::pair<_Ty1,_Ty2>' to 'const std::pair<_Ty1,_Ty2>' 4> with 4> [ 4> _Ty1=std::basic_string<char,std::char_traits<char>,std::allocator<char>>, 4> _Ty2=boost::shared_ptr<boost::log_mt_nt5::attribute> 4> ] 4> and 4> [ 4> _Ty1=const boost::log_mt_nt5::basic_slim_string<char>, 4> _Ty2=boost::log_mt_nt5::basic_attribute_set<char>::mapped_type 4> ] 4> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 4> c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\basic_logger.hpp(226) : while compiling class template member function 'std::pair<_Ty1,_Ty2> boost::log_mt_nt5::sources::basic_logger<CharT,FinalT,ThreadingModelT>::add_attribute_unlocked(const std::basic_string<_Elem,_Traits,_Alloc> &,const boost::shared_ptr<T> &)' 4> with 4> [ 4> _Ty1=boost::log_mt_nt5::basic_attribute_set<char>::iter<false>, 4> _Ty2=bool, 4> CharT=char, 4> FinalT=manster::logger::manster_logger_mt, 4> ThreadingModelT=boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>, 4> _Elem=char, 4> _Traits=std::char_traits<char>, 4> _Alloc=std::allocator<char>, 4> T=boost::log_mt_nt5::attribute 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\severity_feature.hpp(188) : see reference to function template instantiation 'std::pair<_Ty1,_Ty2> boost::log_mt_nt5::sources::basic_logger<CharT,FinalT,ThreadingModelT>::add_attribute_unlocked(const std::basic_string<_Elem,_Traits,_Alloc> &,const boost::shared_ptr<T> &)' being compiled 4> with 4> [ 4> _Ty1=boost::log_mt_nt5::basic_attribute_set<char>::iter<false>, 4> _Ty2=bool, 4> CharT=char, 4> FinalT=manster::logger::manster_logger_mt, 4> ThreadingModelT=boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>, 4> _Elem=char, 4> _Traits=std::char_traits<char>, 4> _Alloc=std::allocator<char>, 4> T=boost::log_mt_nt5::attribute 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\channel_feature.hpp(212) : see reference to class template instantiation 'boost::log_mt_nt5::sources::basic_logger<CharT,FinalT,ThreadingModelT>' being compiled 4> with 4> [ 4> CharT=char, 4> FinalT=manster::logger::manster_logger_mt, 4> ThreadingModelT=boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\basic_logger.hpp(315) : see reference to class template instantiation 'boost::log_mt_nt5::sources::channel<ChannelT>::apply<BaseT>' being compiled 4> with 4> [ 4> ChannelT=std::string, 4> BaseT=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\mpl\aux_\preprocessed\plain\apply_wrap.hpp(49) : see reference to class template instantiation 'boost::log_mt_nt5::sources::aux::inherit_logger_features::apply<PrevT,T>' being compiled 4> with 4> [ 4> PrevT=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>>, 4> T=boost::log_mt_nt5::sources::channel<std::string> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\mpl\aux_\preprocessed\plain\apply.hpp(63) : see reference to class template instantiation 'boost::mpl::apply_wrap2<F,T1,T2>' being compiled 4> with 4> [ 4> F=boost::log_mt_nt5::sources::aux::inherit_logger_features, 4> T1=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>>, 4> T2=boost::log_mt_nt5::sources::channel<std::string> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\mpl\aux_\preprocessed\plain\reverse_fold_impl.hpp(81) : see reference to class template instantiation 'boost::mpl::apply2<F,T1,T2>' being compiled 4> with 4> [ 4> F=boost::log_mt_nt5::sources::aux::inherit_logger_features, 4> T1=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>>, 4> T2=boost::log_mt_nt5::sources::channel<std::string> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\mpl\reverse_fold.hpp(41) : see reference to class template instantiation 'boost::mpl::aux::reverse_fold_impl<N,First,Last,State,BackwardOp,ForwardOp>' being compiled 4> with 4> [ 4> N=2, 4> First=boost::mpl::v_iter<boost::mpl::vector2<boost::log_mt_nt5::sources::severity<severity_level>,boost::log_mt_nt5::sources::channel<std::string>>,0>, 4> Last=boost::mpl::v_iter<boost::mpl::vector2<boost::log_mt_nt5::sources::severity<severity_level>,boost::log_mt_nt5::sources::channel<std::string>>,2>, 4> State=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>>, 4> BackwardOp=boost::log_mt_nt5::sources::aux::inherit_logger_features, 4> ForwardOp=boost::mpl::arg<1> 4> ] 4> c:\program files (x86)\boost\boost_1_51_0\boost\log\sources\basic_logger.hpp(338) : see reference to class template instantiation 'boost::mpl::reverse_fold<Sequence,State,BackwardOp>' being compiled 4> with 4> [ 4> Sequence=boost::log_mt_nt5::sources::features<boost::log_mt_nt5::sources::severity<severity_level>,boost::log_mt_nt5::sources::channel<std::string>>, 4> State=boost::log_mt_nt5::sources::basic_logger<char,manster::logger::manster_logger_mt,boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>>, 4> BackwardOp=boost::log_mt_nt5::sources::aux::inherit_logger_features 4> ] 4> d:\sankom\manster\manster\manster\manster_logger.h(160) : see reference to class template instantiation 'boost::log_mt_nt5::sources::basic_composite_logger<CharT,FinalT,ThreadingModelT,FeaturesT>' being compiled 4> with 4> [ 4> CharT=char, 4> FinalT=manster::logger::manster_logger_mt, 4> ThreadingModelT=boost::log_mt_nt5::sources::multi_thread_model<boost::log_mt_nt5::aux::light_rw_mutex>, 4> FeaturesT=boost::log_mt_nt5::sources::features<boost::log_mt_nt5::sources::severity<severity_level>,boost::log_mt_nt5::sources::channel<std::string>> 4> ] What is the solution ? -- View this message in context: http://boost.2283326.n4.nabble.com/Boost-Logging-1-51-Using-VS2012-tp4641144... 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