1>C:\Program Files\Microsoft Visual Studio 11.0\VC\include\xrefwrap(96): error C2064: term does not evaluate to a function taking 1 arguments
1>          C:\Program Files\Microsoft Visual Studio 11.0\VC\include\xrefwrap(121) : see reference to class template instantiation 'std::_Result_type<__formal,_Fty,<unnamed-symbol>>' being compiled
1>          with
1>          [
1>              __formal=false,
1>              _Fty=int,
1>              <unnamed-symbol>=int &
1>          ]
1>          C:\Program Files\Microsoft Visual Studio 11.0\VC\include\xrefwrap(107) : see reference to class template instantiation 'std::_Result_ofx<_Fty,_V0_t,_V1_t,_V2_t,_V3_t,_V4_t,_V5_t>' being compiled
1>          with
1>          [
1>              _Fty=int,
1>              _V0_t=int &,
1>              _V1_t=std::_Nil,
1>              _V2_t=std::_Nil,
1>              _V3_t=std::_Nil,
1>              _V4_t=std::_Nil,
1>              _V5_t=std::_Nil
1>          ]
1>          C:\Program Files\Microsoft Visual Studio 11.0\VC\include\xrefwrap(243) : see reference to class template instantiation 'std::_Result_of<_Fty,_V0_t,_V1_t,_V2_t,_V3_t,_V4_t,_V5_t,<unnamed-symbol>,_Obj>' being compiled
1>          with
1>          [
1>              _Fty=int,
1>              _V0_t=int &,
1>              _V1_t=std::_Nil,
1>              _V2_t=std::_Nil,
1>              _V3_t=std::_Nil,
1>              _V4_t=std::_Nil,
1>              _V5_t=std::_Nil,
1>              <unnamed-symbol>=std::_Nil,
1>              _Obj=std::_Nil
1>          ]
1>          C:\Program Files\Microsoft Visual Studio 11.0\VC\include\xrefwrap(250) : see reference to class template instantiation 'std::_Result_of0<_Fty>' being compiled
1>          with
1>          [
1>              _Fty=int (int)
1>          ]
1>          main.cpp(11) : see reference to class template instantiation 'std::result_of<_Fty>' being compiled
1>          with
1>          [
1>              _Fty=int (int)
1>          ]
1>
1>Build FAILED.