Re: [boost] [config] Macro for "using" type alias defects

Subject: Re: [boost] [config] Macro for "using" type alias defects
From: Raffi Enficiaud (raffi.enficiaud_at_[hidden])
Date: 2018-04-26 17:17:27

Le 26/04/2018 à 12:13, Peter Dimov via Boost a écrit :
> Raffi Enficiaud wrote:
>> Hi all,
>>
>> I was wondering if there is any macro in Boost.Config for advertising 
>> the defect of the "using" support from the compiler.
>>
>> I was reported this:
>>
>> https://github.com/boostorg/test/pull/140
>>
>> and at the time I wrote the thing, I thought that those guards would 
>> have been enough:
>>
>> https://github.com/boostorg/test/blob/35c9acf5bd38d625ebd45cf940c5b9a19aa2295b/include/boost/test/tree/test_case_template.hpp#L145-L147 
>>
>>
>> (auto, tuple and variadic template sounds to me more difficult to 
>> support than "using" template alias).
>>
>> Would it make sense to have BOOST_NO_CXX11_TYPE_ALIAS?
> 
> As already stated in the issue, the macro is 
> BOOST_NO_CXX11_TEMPLATE_ALIASES.

Good to know, but I thought this macro was for the second form of this 
(with templates):

http://en.cppreference.com/w/cpp/language/type_alias

You are stating that this is for the first form as well, which is 
called, to my understanding, "type alias". Is that correct?

Thanks,
Raffi