GNU bug report logs - #35755
auto-revert-buffers can cause error "Selecting deleted buffer"

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Pogonyshev <pogonyshev <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: auto-revert-buffers can cause error "Selecting deleted buffer"
Date: Wed, 15 May 2019 22:06:47 +0200

[Message part 1 (text/plain, inline)]

To reproduce:

    (with-temp-buffer
      (auto-revert-mode)
      (kill-buffer (current-buffer))
      (auto-revert-buffers))

The function is usually called from a timer, which means that if a killed
buffer somehow ends in `auto-revert-buffer-list', Emacs becomes nearly
unusable, because it spams with this error message non-stop.

I don't know how exactly a killed buffer can end there, but it has happened
to me several times already, probably after extensive C-g use.

`auto-revert-buffers' must be fixed to never select killed buffers.

[Message part 2 (text/html, inline)]

Message #8 received at 35755 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Paul Pogonyshev <pogonyshev <at> gmail.com>
Cc: 35755 <at> debbugs.gnu.org
Subject: Re: bug#35755: auto-revert-buffers can cause error "Selecting deleted
 buffer"
Date: Thu, 16 May 2019 08:45:31 +0200

Paul Pogonyshev <pogonyshev <at> gmail.com> writes:

Hi Paul,

> To reproduce:
>
>     (with-temp-buffer
>       (auto-revert-mode)
>       (kill-buffer (current-buffer))
>       (auto-revert-buffers))
>
> The function is usually called from a timer, which means that if a
> killed buffer somehow ends in `auto-revert-buffer-list', Emacs becomes
> nearly unusable, because it spams with this error message non-stop.
>
> I don't know how exactly a killed buffer can end there, but it has
> happened to me several times already, probably after extensive C-g
> use.
>
> `auto-revert-buffers' must be fixed to never select killed buffers.

This looks like bug#34847, which is fixed in Emacs 27.0.50. Which Emacs
version are you using? If it isn't 27.0.50, do you have a chance to run
it, in order to check whether the bug is fixed for you?

Thanks, and best regards, Michael.

Message #11 received at 35755 <at> debbugs.gnu.org (full text, mbox):

From: Paul Pogonyshev <pogonyshev <at> gmail.com>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: 35755 <at> debbugs.gnu.org
Subject: Re: bug#35755: auto-revert-buffers can cause error "Selecting deleted
 buffer"
Date: Thu, 16 May 2019 14:52:48 +0200

[Message part 1 (text/plain, inline)]

Yes, it got fixed recently (I had a 'master' snapshot from a couple of
months back). Sorry for the duplicate.

On Thu, 16 May 2019 at 08:45, Michael Albinus <michael.albinus <at> gmx.de>
wrote:

> Paul Pogonyshev <pogonyshev <at> gmail.com> writes:
>
> Hi Paul,
>
> > To reproduce:
> >
> >     (with-temp-buffer
> >       (auto-revert-mode)
> >       (kill-buffer (current-buffer))
> >       (auto-revert-buffers))
> >
> > The function is usually called from a timer, which means that if a
> > killed buffer somehow ends in `auto-revert-buffer-list', Emacs becomes
> > nearly unusable, because it spams with this error message non-stop.
> >
> > I don't know how exactly a killed buffer can end there, but it has
> > happened to me several times already, probably after extensive C-g
> > use.
> >
> > `auto-revert-buffers' must be fixed to never select killed buffers.
>
> This looks like bug#34847, which is fixed in Emacs 27.0.50. Which Emacs
> version are you using? If it isn't 27.0.50, do you have a chance to run
> it, in order to check whether the bug is fixed for you?
>
> Thanks, and best regards, Michael.
>

[Message part 2 (text/html, inline)]

Message #16 received at 35755 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Paul Pogonyshev <pogonyshev <at> gmail.com>
Cc: 35755 <at> debbugs.gnu.org
Subject: Re: bug#35755: auto-revert-buffers can cause error "Selecting deleted
 buffer"
Date: Thu, 16 May 2019 15:20:15 +0200

Paul Pogonyshev <pogonyshev <at> gmail.com> writes:

Hi Paul,

> Yes, it got fixed recently (I had a 'master' snapshot from a couple of
> months back). Sorry for the duplicate.

No problem, I'm merging this bug with bug#34847.

Best regards, Michael.

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