[PATCH] signal: Use <sigsetops.h> for sigemptyset, sigfillset

[Florian Weimer]

* Adhemerval Zanella via Libc-alpha:

> On 22/04/2020 07:02, Florian Weimer wrote:
>> * Florian Weimer:
>> 
>>> * Andreas Schwab:
>>>
>>>> On Apr 22 2020, Florian Weimer wrote:
>>>>
>>>>> * Andreas Schwab:
>>>>>
>>>>>> On Apr 22 2020, Florian Weimer wrote:
>>>>>>
>>>>>>> This avoids changing the entire sigset_t structure.  Updating the
>>>>>>> actually used part is sufficient.
>>>>>>
>>>>>> I'm not sure it's a good idea to leave most of the structure
>>>>>> uninitialized.
>>>>>
>>>>> Would you please elaborate?  How is this different from padding?
>>>>
>>>> Padding is always unnamed.
>>>
>>> Not if it is called __glibc_reserved.  I obviously meant named
>>> padding.
>> 
>> And sigprocmask has always left the padding uninitialized (even before
>> Adhemerval's changes).
>
> Should we change __sigemptyset/__sigfillset to fill the ununsed bits
> instead?

We would have to change sigprocmask as well.