Re: Segfault in _Unwind_* code called from pthread_exit

From: Tijl Coosemans <>
Date: Mon, 30 Oct 2017 15:32:07 +0100
On Sun, 29 Oct 2017 20:40:46 +0100 Andreas Tobler <> wrote:
> Attached what I have for libgcc. It can be applied to gcc5-8, should 
> give no issues. The mentioned tc from this thread and mine, 
> do pass.
> What do you think?

Like I said before the return address can be anything.  It could for
instance point to some instruction in a random function and then the
stack unwinder will think thread_start was called from that function.
There's no check you can add to libgcc to distinguish that from a
normal valid return address.
Received on Mon Oct 30 2017 - 13:32:11 UTC

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