[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
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 12:48:04 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
martin rudalics <rudalics@gmx.at> writes:
> > Here is the state as I've been able to determine from the debugger:
> >
> > Vframe_list contains three entries: "build.ninja", "*Server*", and
> > "F1". This matches reality. "F1" is the invisible frame created by
> > --daemon.
> >
> > Frame "build.ninja" has a selected_window whose contents are the buffer
> > "build.ninja".
> >
> > Frame "*Server*" has a selected_window whose contents are the buffer
> > "*Server*".
> >
> > Frame "F1" has a selected_window whose contents are the buffer
> > "*scratch*".
> >
> > Vwindow_list contains two entries: A window whose contents are
> > "build.ninja", and a window whose contents are " *Minibuf-0*".
> >
> > Importantly, Vwindow_list does not contain the window whose contents are
> > "*Server*". Since the window_list_1() call uses the value of
> > Vwindow_list to create its result, the loop in window_loop() will never
> > compare EQ in the REPLACE_BUFFER_IN_WINDOWS_SAFELY case clause.
>
> Impressive, thanks. This means that if earlier everything worked as
> intended someone did
>
> (1) set Vwindow_list to nil (because otherwise the *Server* window would
> still figure in it), and
>
> (2) window_list () recreated Vwindow_list but did _not_ include the
> *Server* window.
>
> 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.
> What is the value of FRAME_ROOT_WINDOW (f) where f is the
> *Server* frame? What is the name of that window's buffer?
It's a window containing the buffer "*Server*".
> IIUC the *Server* frame does not have a minibuffer window - correct?
It didn't appear in Vwindow_list, but it does have a minibuffer.
(gdb) p $116->minibuffer_window
$139 = XIL(0x555556fc8185)
(gdb) xwindow
$140 = (struct window *) 0x555556fc8180
84x1+0+59
(gdb) p $140->contents
$141 = XIL(0x7ffff2a3cb15)
(gdb) xbuffer
$142 = (struct buffer *) 0x7ffff2a3cb10
0x7ffff2d244ea " *Minibuf-0*"
I will note that the window itself is different than the one on the
Vwindow_list with the same contents.
--
Michael Welsh Duggan
(mwd@cert.org)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, (continued)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/01
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/04/02
- 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, 2021/04/05
- 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 <=
- 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, 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