[PATCH v4 2/2] x86: Update _dl_tlsdesc_dynamic to preserve caller-saved registers

[Florian Weimer]

* H. J. Lu:

>> > I thought that unversioned symbols interpose all versioned symbols.  Has
>> > this changed in the dynamic linker?
>>
>> Only for this case.
>>
>
> I was wrong.  Version isn't needed.  Will fix it.

Ahh.  You don't need malloc-for-test.so, either.  I think you could use
-Wl,-E (--export-dynamic) to trigger interposition from the main
program.

It would make sense to check using a counter that the interposed malloc
is in fact called.

Thanks,
Florian