On 10/30/07, "JOAQUIN LOPEZ MU?Z" <joaquin@tid.es> wrote:

----- Mensaje original -----
De: Hugh Hoover <hugh@hooverzone.com>
Fecha: Martes, Octubre 30, 2007 7:02 pm
Asunto: Re: [Boost-users] [multi-index] bug or not?
Para: boost-users@lists.boost.org

>
> On Oct 30, 2007, at 10:31 AM, Ovanes Markarian wrote:
>
> > Hello!
[...]
> > I have on Visual C++ 2005 an access violation, since I am trying
> > to retrieve a view by it's hashed keys into the const container.
>
> Are you doing what I did yesterday, which is to keep the view as
> an object rather than as a reference?
>
> Like:
>
> typedef multi_index_container< ... > multi_index_collection;
> typedef multi_index_collection::nth_index<1> my_index;
> multi_index_collection collection;
>
> my_index mi = collection.get<1>();
>
> rather than
>
> my_index& mi = collection.get<1>();
>
> ???

I place my bet on this too. This misuse of B.MI interface is prevented
against at the end of the section at http://tinyurl.com/2vlq2n ,
although I'm afraid many readers will overlook the warning. In my
discharge I must say that in other compilers the &-less code actually
does not compile, for instance GCC 3.4 says:

.../boost/multi_index/ordered_index.hpp:540: error:
`boost::multi_index::
detail::ordered_index<...>::ordered_index(
const boost::multi_index::detail::ordered_index<...>&)
[with KeyFromValue = ...]' is protected

Alas the code compiles in VC 8.0 because I was forced to make indices'
copy ctors public due to a compiler bug with in-class using
declarations
for template functions (more details at http://tinyurl.com/354k63 ).

Hope the rest of your experience with the lib has been more
pleasant.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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