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bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs
From: |
martin rudalics |
Subject: |
bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs |
Date: |
Wed, 7 Apr 2021 11:00:36 +0200 |
> 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?
Improbable but I attached some code that could detect such an
incidence. Put a breakpoint at the
Vwindow_list = window_list_2;
line.
> I don't think
> so, off hand, but I'm grasping at straws.
I also added a variable called `window-list-lengths' which records the
last 20 or so last changes in the number of windows seen by window_list.
Maybe you can detect some strange 2 ~> 6 or 6 ~> 2 change while running
Gnus. I'm still not sure whether your daemon setup could be involved
somehow.
martin
selected_window_contents.diff
Description: Text Data
- 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, 2021/04/06
- 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, 2021/04/06
- 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 <=
- 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
- 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