Re: [PATCH v3 2/2] Default to --with-default-link=no (bug 25812)

[Florian Weimer <fweimer@redhat.com>]

* Adhemerval Zanella:

> On 29/04/2022 10:17, Florian Weimer wrote:
>> * Adhemerval Zanella:
>> 
>>> On 11/04/2022 12:32, Florian Weimer via Libc-alpha wrote:
>>>> This is necessary to place the libio vtables into the RELRO segment.
>>>> New tests elf/tst-relro-ldso and elf/tst-relro-libc are added to
>>>> verify that this is what actually happens.
>>>>
>>>> The new tests fail on ia64 due to lack of (default) RELRO support
>>>> inbutils, so they are XFAILed there.
>>>
>>> I always frown upon new configure options, since they tend to degrade over
>>> time (as --disable-shared for instance [1]) and require additional 
>>> maintaining costs.  Why can't we make the required semantic the default 
>>> (since usually relro has minimal costs it a net gain in hardening)?
>> 
>> This is what the patch does, I think.
>
> I meant to not add --with-default-link= and just not use the extra linker 
> script.

That would be nice.  I want to get rid of the pointer arrays, and after
the vfprintf changes (and similar vscanf changes) are merged, we won't
need the vtable array anymore, either.  That should eliminate all
special section placement requirements.

Thanks,
Florian