Re: [boost] [unordered] 1.48 beta1 fails to compile with MSVC 2010 SP 1, error C2027: use of undefined type 'boost::type'

Subject: Re: [boost] [unordered] 1.48 beta1 fails to compile with MSVC 2010 SP 1, error C2027: use of undefined type 'boost::type'
From: Johan Lindvall (johan.lindvall_at_[hidden])
Date: 2011-10-29 12:09:31

On Sat, Oct 29, 2011 at 5:12 PM, Daniel James <dnljms_at_[hidden]> wrote:
> On Saturday, 29 October 2011, Johan Lindvall wrote:
>
>> After trying out beta 1, I am seeing some failures with unordered
>> containers, see attached file.
>>
>> Microsoft (R) C/C++ Optimizing Compiler Version 16.00.40219.01 for x64
>>
>> The code compiles without problems under 1.47.0.
>>
>> Unfortunately, I cannot yet publish the source code that triggers this
>> problem.
>>
>
> Can you try something? Look in boost/unordered/detail/allocator_helpers.hpp
> for the line:
>
> #if !defined(BOOST_NO_SFINAE_EXPR) || BOOST_WORKAROUND(BOOST_MSVC, >= 1500)
>
> and change it to:
>
> #if !defined(BOOST_NO_SFINAE_EXPR)
>
> Unordered uses a bit of a hack on Visual C++ to implement some of the C++11
> functionality. That change disables it and uses the less capable fallback
> implementation (which is actually a lot better now than it originally was,
> so using a hack seems less appealing).

Thankyou - yes, that solved the problem. The code now compiles as before.

-- 
/Johan.