On Wed, Jul 20, 2016 at 12:19 PM, Jonathan Wakely <cxx_at_[hidden]> wrote:

> On 20 July 2016 at 19:22, Richard Smith <richard_at_[hidden]> wrote:
>
>> On Tue, Jul 19, 2016 at 11:12 AM, Nelson, Clark <clark.nelson_at_[hidden]>
>> wrote:
>>
>>> I have incorporated all of the changes approved at the last meeting into
>>> the
>>> table for C++17. The draft can be found at:
>>>
>>> http://wiki.edg.com/pub/Wg21oulu/SG10/sd-6.html
>>>
>>> Very few of those proposals had their own macro recommendations, but I
>>> have
>>> taken them into account. And as yet I haven't done anything about
>>> filling in
>>> the rationale, even for the cases for which I made my own
>>> recommendation. So
>>> we definitely have work to do.
>>>
>>
>> Some suggestions:
>>
>> Forward progress guarantees: no macro (these papers really just add
>> definitions)
>> Inline variables: __cpp_inline_variables
>> Guaranteed copy elision: no macro (portable code should avoid or cope
>> with copies)
>> Expression evaluation order: no macro (portable code should not rely on
>> the order)
>> Constexpr if: either __cpp_constexpr_if (matching the paper name) or
>> __cpp_if_constexpr (matching the syntax)
>> Selection statement with init: no macro (portable code can perform a
>> simple rewrite to avoid the feature)
>>
>
> All agreed.
>
>
>> Structured bindings: __cpp_structured_bindings
>>
>>
> I know that's the paper name, but it's not a term in the standard. Would
> __cpp_decomp_decl or something based on "decomposition declaration" make
> more sense?
>

Sounds like a good idea. (And decomp_decl has the nice property that it
still makes sense when we eventually decide that this is a decomposition
*declarator*, not a decomposition *declaration*...)


> All the variant changes from Oulu should be covered by
>> __has_include(<variant>); I don't think we have a need to track them
>> separately unless someone chooses to produce a <variant> header that
>> doesn't match the contents of any working draft.
>>
>>
>
> Agreed.
>
>
>
>
>> Up until now I have been updating SD-6 on isocpp.org basically around the
>>> holidays. But we might want to try to publish an update before the
>>> Issaquah
>>> meeting, to cover the C++17 CD.
>>>
>>> I'd like to schedule a telecon to make some progress on this. August 1
>>> and
>>> August 15 look like plausible candidates. If anyone has any definite
>>> preference for one over the other, please let me know.
>>>
>>> --
>>> Clark Nelson Chair, PL22.16 (ANSI C++ standard committee)
>>> Intel Corporation Chair, SG10 (C++ SG for feature-testing)
>>> clark.nelson_at_[hidden] Chair, CPLEX (C SG for parallel language
>>> extensions)
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>>>
>>
>>
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>