[boost] [type_traits][multi_index][msvc-7.1] problems with is_const in VC 7.1

Subject: [boost] [type_traits][multi_index][msvc-7.1] problems with is_const in VC 7.1
From: Joaquin M LópezMuñoz (joaquin_at_[hidden])
Date: 2015-10-15 07:22:10

>

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
{
};

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