GNU bug report logs - #23065
24.5; OS X 10.11 delete-frame fullscreen frame causes segfault

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

From: Trey Ethan Harris <trey <at> cpan.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.5; OS X 10.11 delete-frame fullscreen frame causes segfault
Date: Sat, 19 Mar 2016 16:39:36 +0000

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

To reproduce:

0. Run "Emacs.app/Contents/MacOS/Emacs -Q".
1. Create a second frame (with make-frame or other method)
2. Make the frame fullscreen using the green titlebar fullscreen button
3. Delete the new fullscreen frame using delete-frame or other method
(including clicking the red titlebar close button).

Expected result: Frame deleted, prior frame refocused, Emacs continues
running
Actual result: Frame deleted, then segmentation fault

I have done some additional differential diagnosis that may be helpful:

1. This only occurs with OS X El Capitan (10.11) and later—which
rewrote fullscreen support to support Split View, so I suspect the
new interaction is to blame.
2. I have tested other Cocoa builds of Emacs 24 such as emacsforosx, and
they
also exhibit this behavior. (I have not tested Emacs 25.)
3. I have had others, including non-Emacs users, reproduce the bug, in
one case on an otherwise clean install of OS X.





In GNU Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21)
 of 2015-04-10 on builder10-9.porkrind.org
Windowing system distributor `Apple', version 10.3.1404
Configured using:
 `configure --with-ns '--enable-locallisppath=/Library/Application
 Support/Emacs/${version}/site-lisp:/Library/Application
 Support/Emacs/site-lisp''

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

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

Message #8 received at 23065 <at> debbugs.gnu.org (full text, mbox):

From: Saulius Menkevičius <saulius.menkevicius <at> gmail.com>
To: Trey Ethan Harris <trey <at> cpan.org>
Cc: 23065 <at> debbugs.gnu.org
Subject: Re: bug#23065: 24.5;
 OS X 10.11 delete-frame fullscreen frame causes segfault
Date: Sat, 19 Mar 2016 19:39:23 +0200

Hi,

I can confirm I had this on 24.x and that this sequence no longer
crashes emacs 25 (pretest).

-Saulius

Trey Ethan Harris <trey <at> cpan.org> writes:

> To reproduce:
>
> 0. Run "Emacs.app/Contents/MacOS/Emacs -Q".
> 1. Create a second frame (with make-frame or other method)
> 2. Make the frame fullscreen using the green titlebar fullscreen button
> 3. Delete the new fullscreen frame using delete-frame or other method
> (including clicking the red titlebar close button).
>
> Expected result: Frame deleted, prior frame refocused, Emacs continues
> running
> Actual result: Frame deleted, then segmentation fault
>
> I have done some additional differential diagnosis that may be helpful:
>
> 1. This only occurs with OS X El Capitan (10.11) and later—which
> rewrote fullscreen support to support Split View, so I suspect the
> new interaction is to blame.
> 2. I have tested other Cocoa builds of Emacs 24 such as emacsforosx, and
> they
> also exhibit this behavior. (I have not tested Emacs 25.)
> 3. I have had others, including non-Emacs users, reproduce the bug, in
> one case on an otherwise clean install of OS X.
>
>
>
>
>
> In GNU Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21)
>  of 2015-04-10 on builder10-9.porkrind.org
> Windowing system distributor `Apple', version 10.3.1404
> Configured using:
>  `configure --with-ns '--enable-locallisppath=/Library/Application
>  Support/Emacs/${version}/site-lisp:/Library/Application
>  Support/Emacs/site-lisp''
>
> Important settings:
>   value of $LANG: en_US.UTF-8
>   locale-coding-system: utf-8-unix

Message #13 received at 23065 <at> debbugs.gnu.org (full text, mbox):

From: Alan Third <alan <at> idiocy.org>
To: Saulius Menkevičius <saulius.menkevicius <at> gmail.com>
Cc: Trey Ethan Harris <trey <at> cpan.org>, 23065 <at> debbugs.gnu.org,
 23395 <at> debbugs.gnu.org
Subject: Re: bug#23065: 24.5;
 OS X 10.11 delete-frame fullscreen frame causes segfault
Date: Wed, 04 May 2016 20:17:52 +0100

Saulius Menkevičius <saulius.menkevicius <at> gmail.com> writes:

> Hi,
>
> I can confirm I had this on 24.x and that this sequence no longer
> crashes emacs 25 (pretest).

I don't get this crash in Emacs 25 either.
-- 
Alan Third

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