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bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs
From: |
Michael Welsh Duggan |
Subject: |
bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs |
Date: |
Tue, 06 Apr 2021 22:22:03 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Michael Welsh Duggan <mwd@cert.org> writes:
> martin rudalics <rudalics@gmx.at> writes:
>
>> >> The mysterious aspect is (2): Why did window_list skip the *Server*
>> >> window?
>> >
>> > Good question. I plan to set Vwindow_list to nil and call it to see
>> > what happens.
>>
>> This should resolve the mystery.
>
> I wish it did. After doing this, Vwindow_list has six entries, one for
> each selected_window on each frame, and one for each minibuffer window
> on each frame. This includes the "*Server*" buffer.
Just a shot in the dark here. The only way I can think of this
occurring (Vwindow_list being too small), is that something modified
Vwindow_list when we don't expect it to be modified. I looked through
all the uses of Vwindow_list and window_list(), and they all look
kosher. The only modification seems to be setting Vwindow_list to nil.
But window_list() does call into lisp (nconc2, which calls Fnconc) when
constructing Vwindow_list, and it uses Vwindow_list as a temporary in
the process. Is it possible that during that call something happens
asynchronously (via gc?) that calls something that sets Vwindow_list
to nil again, while Vwindow_list is being constructed? I don't think
so, off hand, but I'm grasping at straws.
--
Michael Welsh Duggan
(md5i@md5i.com)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, (continued)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/05
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/05
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/05
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/05
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/06
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs,
Michael Welsh Duggan <=
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Andreas Schwab, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07