GNU bug report logs - #70760
29.3.50; core dumps when copy in other apps

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From: Kun Liu <kun.liu <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Michael Albinus <michael.albinus <at> gmx.de>, 70760 <at> debbugs.gnu.org
Subject: bug#70760: 29.3.50; core dumps when copy in other apps
Date: Sun, 5 May 2024 09:44:55 -0700

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I am not sure how VirtualBox deals with Ctrl-C on the Windows side. I
will look into it when I have time.

I did more tests. Observations:

1) It *appears* that the problem is there only when I have a shell buffer
(M-x shell). I will do more tests and report back.

2) The error messages seem to vary. For example, I saw the following two
different ones when copying:

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  dbus-handle-event((dbus-event (calendar-cursor-holidays
(calendar-current-date))))
  funcall-interactively(dbus-handle-event (dbus-event
(calendar-cursor-holidays (calendar-current-date))))
  command-execute(dbus-handle-event nil [(dbus-event
(calendar-cursor-holidays (calendar-current-date)))] t)

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  dbus-handle-event((dbus-event (if above 1 2)))
  funcall-interactively(dbus-handle-event (dbus-event (if above 1 2)))
  command-execute(dbus-handle-event nil [(dbus-event (if above 1 2))] t)

On Sun, May 5, 2024 at 9:12 AM Eli Zaretskii <eliz <at> gnu.org> wrote:

> > From: Kun Liu <kun.liu <at> gmail.com>
> > Date: Sun, 5 May 2024 08:45:34 -0700
> > Cc: 70760 <at> debbugs.gnu.org
> >
> > I did (setq debug-on-error t), went to
> https://en.wikipedia.org/wiki/Emacs, randomly selected a fragment
> > "Emacs has over", then did a ctrll+c.
> >
> > Emacs in VirtualBox immediately showed the following:
> >
> > Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p
> nil)
> >   dbus-handle-event((dbus-event "[ \11]*$"))
> >   funcall-interactively(dbus-handle-event (dbus-event "[ \11]*$"))
> >   call-interactively(dbus-handle-event nil [(dbus-event "[ \11]*$")])
> >   command-execute(dbus-handle-event nil [(dbus-event "[ \11]*$")] t)
>
> Does VirtualBox have anything in its documentation that suggests that
> Ctrl-C on the Windows side will cause a D-Bus event on the VM side?
>
> Michael, any idea what is this D-Bus event, and what does it have to
> do with copying into the Windows clipboard?
>
> Thanks.
>

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