[PATCH 0/2] nptl: Update struct pthread_unwind_buf

[Florian Weimer]

* H. J. Lu:

> On Sun, Feb 25, 2018 at 1:26 AM, Florian Weimer <fw@deneb.enyo.de> wrote:
>> * H. J. Lu:
>>
>>> What have I done wrong?
>>
>> My understanding (shared by Carlos as far as I know) is that you do
>> not need to restore the shadow stack pointer when unwinding for
>> cancellation or thread exit.
>
> It may be true for thread exit.  Are you saying that a function will never
> return after cancellation point?

That's certainly the intent.  Cancellation is supposed to be
unstoppable.