Re: [boost] [scope_exit] C++11 freely uses typename (on MSVC10?)

Subject: Re: [boost] [scope_exit] C++11 freely uses typename (on MSVC10?)
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2012-04-02 18:19:34

Le 02/04/12 22:04, lcaminiti a écrit :
> Nelson, Erik - 2 wrote
>> Lcaminiti wrote on Monday, April 02, 2012 1:53 PM
>>
>>> For example, is the following supposed to compile on MSVC10?
>>> #include<boost/mpl/identity.hpp>
>>>
>>> int main() {
>>>      typedef typename boost::mpl::identity<int>::type t;
>>>      t i = 0;
>>>      return i;
>>> }
>> This code does not compile on my copy of MSVC10.
>>
>> -->error C2899: typename cannot be used outside a template declaration
>>
> Thanks. Is anyone positive about what the C++11 standard says in this case?
> This code compiles on my GCC 4.5.3 with -std=c++0x... who's right MSVC or
> GCC?
>
>
I don't know what the c++11 standard says, but as there are some 
compilers that don't support it and this was not allowed on C++03 
compilers you should live with this constraint and the use of typename 
outside templates.

Best,
Vicente