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From: | Alex Bennée |
Subject: | bug#48337: Fwd: 28.0.50; Emacs crashing randomly (possibly minibuffer activity related) |
Date: | Tue, 11 May 2021 13:54:02 +0100 |
> From: Alex Bennée <alex.bennee@linaro.org>
> Date: Tue, 11 May 2021 07:51:20 +0100
> Cc: 48337@debbugs.gnu.org, Alan Mackenzie <acm@muc.de>
>
> I can now recreate at will with a magit sequence (l o hackbox/ TAB) which triggers a minibuffer re-size to
> accommodate the list of git branches:
>
> (gdb) info frame 0
> Stack frame at 0x7fffffffb2e0:
> rip = 0x5555556a80ef in Factive_minibuffer_window (minibuf.c:230); saved rip = 0x5555556f52ab
> called by frame at 0x7fffffffb340
> source language c.
> Arglist at 0x7fffffffb2c8, args:
> Locals at 0x7fffffffb2c8, Previous frame's sp is 0x7fffffffb2e0
> Saved registers:
> rip at 0x7fffffffb2d8
> (gdb) x/5i $pc
> => 0x5555556a80ef <Factive_minibuffer_window+79>: mov -0x3(%rax),%r10
> 0x5555556a80f3 <Factive_minibuffer_window+83>: lea -0x3(%rdx),%eax
> 0x5555556a80f6 <Factive_minibuffer_window+86>: test $0x7,%al
> 0x5555556a80f8 <Factive_minibuffer_window+88>: jne 0x5555556a8153
> <Factive_minibuffer_window+179>
> 0x5555556a80fa <Factive_minibuffer_window+90>: nopw 0x0(%rax,%rax,1)
> (gdb) p/x $rax
> $4 = 0x0
> (gdb) p/x $r10
> $5 = 0x7fffeece9c6d
> (gdb) l
> 225 Lisp_Object innermost_MB;
> 226
> 227 if (!minibuf_level)
> 228 return Qnil;
> 229
> 230 innermost_MB = nth_minibuffer (minibuf_level);
> 231 FOR_EACH_FRAME (frames, frame)
> 232 {
> 233 f = XFRAME (frame);
> 234 if (FRAME_LIVE_P (f)
> (gdb) p minibuf_level
> $6 = 2
> (gdb) p Vminibuffer_list
> $7 = (Lisp_Object) 0x555555c9aca3
> (gdb) p $*
> A syntax error in _expression_, near `'.
> (gdb) p *$
> $8 = <incomplete type>
> (gdb)
>
> Let me know if you want something else.
I want this:
(gdb) pp Vminibuffer_list
If GDB says it doesn't know "pp", you need to source the .gdbinit file
in the Emacs's src directory.
Thanks.
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