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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: |
Mon, 05 Apr 2021 16:56:23 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
martin rudalics <rudalics@gmx.at> writes:
>> Surprisingly, no. Three frames were checked. The only buffers in
>> windows involved in the entire process were:
>>
>> "build.ninja" - I had that file in another frame
>> " *Minibuf-0*" - Looks like this was in the same frame as build.ninja?
>> "*Server*" - This was the window whose buffer is being deleted
>
> But *Server* _is_ the buffer that shall be killed IIUC - the obj passed
> to window_loop. I nowhere see that you tried
>
> p XBUFFER (w->contents)->name_
>
> below. Basically when you encounter the
>
> if (EQ (w->contents, obj))
>
> eventually w->contents should be that buffer. And apparently
> w->contents never is that buffer. Can you check again?
Actually, what I did is use xbuffer, which as part of it outputs the
name_. For example:
(gdb) p w->contents
$53 = XIL(0x5555578be555)
(gdb) xbuffer
$54 = (struct buffer *) 0x5555578be550
0x555557241db0 "build.ninja"
In this case the name_ field is "build.ninja". The definition of
xbuffer is:
define xbuffer
xgetptr $
print (struct buffer *) $ptr
xgetptr $->name_
output $ptr ? (char *) ((struct Lisp_String *) $ptr)->u.s.data : "DEAD"
echo \n
end
document xbuffer
Set $ as a buffer pointer and the name of the buffer.
This command assumes $ is an Emacs Lisp buffer value.
end
When window_list_1() gets called with the window that has "*Server*" as
the buffer, window_list() (as called on line 2866) does not return a
list that contains that window. I do not know how Vwindow_list (which
is what is returned by window_list() gets updated.
--
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, 2021/04/01
- 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, 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 <=
- 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, 2021/04/07
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/04/07