V2 [PATCH] Mark __libc_freeres_fn as used [# 27002]

[Florian Weimer]

* H. J. Lu:

> On Thu, Dec 3, 2020 at 5:36 AM Florian Weimer <fweimer@redhat.com> wrote:
>>
>> * H. J. Lu:
>>
>> > GCC 11 is changed to place the used symbol in SHF_GNU_RETAIN section to
>> > support --gc-sections.  If you believe it is wrong, please file a GCC bug.
>>
>> Okay, I filed: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98121>
>>
>
> Independent of the GCC issue, __libc_freeres_fn should have the
> used attribute.  OK for master?

Looks okay to me.  Thanks.

Florian
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