Re: [boost] boost::result_of and C++03

From: Doug Gregor (dgregor_at_[hidden])
Date: 2008-04-07 15:20:19

On Apr 7, 2008, at 2:30 PM, Anthony Williams wrote:

> "Peter Dimov" <pdimov_at_[hidden]> writes:
>
>> Anthony Williams:
>>> "Peter Dimov" <pdimov_at_[hidden]> writes:
>>>
>>>> Anthony Williams:
>>>>> "Peter Dimov" <pdimov_at_[hidden]> writes:
>>>>>
>>>>>> Eric Niebler:
>>>>>>
>>>>>>> Can you write what the identity function object would look  
>>>>>>> like in
>>>>>>> C++0x?
>>>>>>
>>>>>> struct identity
>>>>>> {
>>>>>>    template<class A> A operator()( A && a ) const
>>>>>>    {
>>>>>>        return std::forward<A>( a );
>>>>>>    }
>>>>>> };
>>>>>>
>>>>>> I guess.
>>>>>
>>>>> No. That will convert lvalues to rvalues.
>>>>
>>>> Try it.
>>>
>>> I have, and it doesn't work.
>>
>> With what compiler does it not work? Can you post the example  
>> program?
>
> It's a pre-release compiler. I can't tell you which one as I'm under  
> an NDA.

IIRC, GCC 4.3.0 should deal with this correctly. And if it doesn't,  
please file a bug report.

        - Doug