GNU bug report logs - #31312
Segmentation fault with doom-emacs, NeoTree and Zoom

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Message #78 received at 31312 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: cyrus.and <at> gmail.com, npostavs <at> gmail.com, 31312 <at> debbugs.gnu.org
Subject: Re: bug#31312: Segmentation fault with doom-emacs, NeoTree and Zoom
Date: Wed, 02 May 2018 20:43:30 +0200

>> If you mean something like
>>
>>     if (WINDOWP (selected_window) && (w = XWINDOW (selected_window)) != sw)
>>       sw = w;
>>
>> I'm afraid that this would fail since selected_window has no buffer
>> any more (or may have even been recycled already).
>
> Is that a fact?  I might be mistaken, but my take on what Noam found
> was that the selected window is OK, it's just that the window held in
> W is dead (i.e. it was deleted inside the tempest that happened in
> run_window_size_change_functions called by prepare_menu_bars).  So my
> suggestion is to update W with the new selected window.

Then I misinterpreted Noam's results.  Anyway, a simple way to
reproduce the bug is

(defun foo (frame)
  (delete-window (selected-window)))

(add-hook 'window-size-change-functions 'foo)

and do C-x 2.

martin

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