GNU bug report logs - #63589
29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Thiago Melo <tmdmelo <at> gmail.com>
Cc: luangruo <at> yahoo.com, 63589 <at> debbugs.gnu.org
Subject: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb
Date: Sun, 21 May 2023 20:42:25 +0300

> From: Thiago Melo <tmdmelo <at> gmail.com>
> Date: Sun, 21 May 2023 16:10:35 +0000
> Cc: Po Lu <luangruo <at> yahoo.com>, 63589 <at> debbugs.gnu.org
> 
> > What I would like to understand is how come this didn't happen until
> > now?  The Cairo build is the default since Emacs 28, is it not?
> 
> This is not just about cairo, but about cairo with xcb surfaces. It
> was introduced in commit de614ec9, which is part of emacs 29. If I
> understood well, previously, emacs + cairo used the xlib device only.

Which means we must fix this in Emacs 29.1.  If the right fix is too
unsafe for that, perhaps the alternative is to make the xcb surfaces
support be off by default, unless Emacs is explicitly configured to
use it.

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