Re: [boost] Help test MSVC 14 CTP compiler

Subject: Re: [boost] Help test MSVC 14 CTP compiler
From: John Maddock (boost.regex_at_[hidden])
Date: 2014-12-02 12:23:09

>>> Update: in the absence of SFINAE expression support, a number of
>>> type_traits are terminally broken, and this is one I'm afraid.
>>
>>
>> If this is unimplementable, then that's fine. What I find confusing is
>> that
>> regression tests for is_nothrow_move_assignable pass on this compiler:
>> http://www.boost.org/development/tests/develop/developer/type_traits.html
>>
>
> The compiler has an __is_nothrow_assignable() built-in, which seems
> usable here.
>
> The standard says that is_nothrow_move_assignable<T> is the same as
> is_nothrow_assignable<T&, T&&>.

Will investigate.

BTW the current implementation does use noexcept - the issue is that in 
some situations this leads to noexcept(expression-that-doesn't-compile) 
which requires SFINAE-expression support.

John.