Re: [Boost-users] Boost 1.56.0 compilation error in iterator_range

Subject: Re: [Boost-users] Boost 1.56.0 compilation error in iterator_range
From: Eric Niebler (eniebler_at_[hidden])
Date: 2014-08-09 15:46:35

On 8/9/2014 4:10 AM, gast128 wrote:
> I get a compilation error with vc10, iterator_range and a (const)
> unordered_map (the beta candidate 2 was still ok I think):
> 
> #include "stdafx.h"
> #include <boost/range/iterator_range.hpp>
> #include <boost/unordered_map.hpp>
> 
> int _tmain(int /*argc*/, _TCHAR* /*argv*/[])
> {
>    typedef boost::unordered_map<int, int>            Container;
>    typedef Container::const_iterator                 ContainerIterator;
>    typedef boost::iterator_range<ContainerIterator>  ContainerIteratorRange;
> 
>    const Container cnt;
> 
>    ContainerIteratorRange rng(cnt.cbegin(), cnt.cend());
>    
>    return 0;
> }
> 
> This gives C2248: 
> 
> 'boost::unordered::iterator_detail::c_iterator<Node,ConstNodePointer>::iterator'
> 
> cannot access private typedef declared in class

Well, this is unfortunate. It's broken also on msvc-12 and clang trunk,
but strangely not on gcc. I thought it might be due to this change in
Boost.Range:

https://github.com/boostorg/range/commit/264017e2a9bdbfcc24517ce05f8ef96df0a8c45b

But reverting that doesn't have any effect. It works on Boost 1.55, so
this is definitely a regression.

Can you please file a bug? Neil, can you take a look?

Thanks,
Eric