bug#74642: 31.0.50; [Patch] Turn off current source line indicator when gdb buffer is killed

[Eli Zaretskii]

> From: Diancheng Wang <diancheng_wang@163.com>
> Cc: 74642@debbugs.gnu.org
> Date: Wed, 04 Dec 2024 16:22:51 +0800
> 
> > I guess you mean "C-x k RET"?
> 
> Yes, I mean "C-x k RET"
> 
> >
> > When I do that, Emacs asks me whether to kill the process associated
> > with the buffer, and if I say YES, the indicator does disappear
> 
> Yes, the steps are same with me.
> 
> > (sometimes after a second, which I guess is needed for Emacs to kill
> > the process).  Isn't that what you see?
> 
> No, the indicator does not disappear after I killed "*gud-myprogram*" buffer.
> By the way I started emacs using "emacs -Q".

So did I.

> The attachment is my running emacs information (the buffer content
> created by report-emacs-bug)

Looks like some kind of regression in Emacs 31.  It works in Emacs 30.
If you could bisect to find the offending commit, it will be
appreciated.

Thanks.