Re: [PATCH] [gdb/testsuite] Fix gdb.arch/i386-avx.exp with clang

Pedro Alves
2021-11-05T13:23:27Z

On 2021-11-05 13:15, Tom de Vries wrote:
> On 11/5/21 1:55 PM, Pedro Alves wrote:
>> On 2021-11-05 12:23, Tom de Vries via Gdb-patches wrote:
>>
>>>> No, but in gdb/testsuite/lib/attribute.h we do setup a compatibility
>>>> macro for 'noclone', so there's definitely precedent for using
>>>> attributes that might not be supported everywhere.
>>>>
>>>
>>> Right, I'm aware of this, but that's a typical case where we have no
>>> portable alternative.
>>
>> We actually do -- _Alignas is standard C11. This fixes the test as well:
>>
>> _Alignas(32) v8sf_t data[] =
>>
>
> I was referring to the noclone, but ok, I was not aware of the _Alignas,
> good to know, thanks.
>
> Anyway, in the latest version this is not relevant anymore, since the
> precise alignment implementation has an extra benefit, as explained in
> the post.
>

OOC, is that benefit important here?