Hi, Boost.MultiIndex is failing at master for VC 7.1: http://tinyurl.com/oxflkj6 .\boost\multi_index\identity.hpp(75) : error C2535: 'Type &boost::multi_index::detail::const_identity_base<Type>::operator() (const boost::reference_wrapper<Type> &) const' : member function already defined or declared the problem seemingly being with boost::is_const. The offending code looks like template<typename Type> struct const_identity_base { // produces the error above if Type is not const }; template<typename Type> struct non_const_identity_base { ... }; template<class Type> struct identity: mpl::if_c< is_const<Type>::value, detail::const_identity_base<Type>, detail::non_const_identity_base<Type>
::type { };
Boost.TypeTraits recently changed its is_const implementation to the very simple template <class T> struct is_const : public false_type {}; template <class T> struct is_const<T const> : public true_type{}; template <class T, size_t N> struct is_const<T const[N]> : public true_type{}; template <class T> struct is_const<T const[]> : public true_type{}; which relies on template partial specialization (supposedly supported by VC 7.1). Yet, seems like const_identity_base is wrongly selected for a non-const Type. Any clues about what might be going on? Thank you, Joaquín M López Muñoz Telefónica