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

Subject: [boost] [config] Macro for "using" type alias defects
From: Raffi Enficiaud (raffi.enficiaud_at_[hidden])
Date: 2018-04-25 22:50:43

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?

Thanks,
Raffi