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

Subject: Re: [boost] [type_traits][multi_index][msvc-7.1] problems with is_const in VC 7.1
From: Joaquín M LópezMuñoz (joaquin_at_[hidden])
Date: 2015-10-15 14:40:04

Ion Gaztañaga <igaztanaga <at> gmail.com> writes:

> 
> On 15/10/2015 13:22, Joaquin M LópezMuñoz wrote:
> >
> > Boost.MultiIndex is failing at master for VC 7.1:
> >
> > [...]
> > 
> > template<class Type>
> > struct identity:
> >    mpl::if_c<
> >      is_const<Type>::value,
> >      detail::const_identity_base<Type>,
> >      detail::non_const_identity_base<Type>
> >    >::type
> > {
> > };
> 
> Sometimes MSVC-7.1 seems to be happier with a bit more flattened 
> template instantiation chain. Maybe if you SFINAE it with partial 
> specialization of identity it will work.
> 
> Another option is to use if_<> instead of if_c. It could make
> MSVC happier.

Won't you have direct access to a local MSVC 7.1 installation to play
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