GNU bug report logs - #50699
28.0.50; Assertation failed when built with checking and mouse face is set to :box 0

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Package: emacs;

Reported by: Po Lu <luangruo <at> yahoo.com>

Date: Mon, 20 Sep 2021 11:30:02 UTC

Severity: normal

Tags: fixed

Found in version 28.0.50

Fixed in version 29.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 50699 <at> debbugs.gnu.org
Subject: bug#50699: 28.0.50; Assertation failed when built with checking and mouse face is set to :box 0
Date: Mon, 20 Sep 2021 15:23:08 +0300

> Date: Mon, 20 Sep 2021 19:29:43 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> 
> When I set the box of the mouse face on a section of text to 0, such as
> with (insert (propertize "abc" foo 'mouse-face '(:box 0))), and move the
> mouse over that, and I build with enable-checking, Emacs crashes with:
> 
> xfaces.c:5976: Emacs fatal error: assertion failed: XFIXNUM (box) != 0
> Fatal error 6: Aborted

Thanks, should be fixed now.
This bug report was last modified 2 years and 267 days ago.

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