[patch] add support for has_feature(cxx_alignof) and has_feature(c_alignof)

[Nico Weber]

r223186, thanks!

On Tue, Dec 2, 2014 at 5:13 PM, Richard Smith <richard at metafoo.co.uk> wrote:

> +Use ``__has_feature(cxx_alignof)`` or ``__has_extension(cxx_alignof)`` to
> +determine if support for alignment specifiers using ``alignof`` is
> enabled.
>
> `alignof` is not an alignment-specifier. Maybe "... to determine if
> support for the ``alignof`` keyword is enabled."?
>
> Likewise for _Alignof.
>
> Otherwise, this seems fine to me.
>
> On Tue, Dec 2, 2014 at 4:40 PM, Nico Weber <thakis at chromium.org> wrote:
>
>> ping!
>>
>> On Mon, Dec 1, 2014 at 1:07 PM, Nico Weber <thakis at chromium.org> wrote:
>>
>>> r142020 added support for has_feature(cxx_alignas). This patch does the
>>> same for alignof.
>>>
>>
>>
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>>
>
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