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Subject: Re: [PATCH 0/2] nptl: Update struct pthread_unwind_buf
Date: Sun, 25 Feb 2018 14:31:49 +0100
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Cc: "Carlos O'Donell" <carlos@redhat.com>,  GNU C Library <libc-alpha@sourceware.org>
To: "H.J. Lu" <hjl.tools@gmail.com>
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	(H. J. Lu's message of "Sun, 25 Feb 2018 05:23:26 -0800")
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* H. J. Lu:

> libpthread cancellation implementation passes cancel_jmp_buf to
> libgcc unwinder,

Oh.  Where does it do that?  If you mean _Unwind_ForcedUnwind, I think
that's just an opaque closure argument for the callback.