bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> Which is why I asked whether x-delete-terminal etc. could call a
> function that is different from what we call when we exit.

Why is what Emacs does upon exiting relevant here?
The problem occurs when a display connection is closed while Emacs
wants to stay running.  Cairo keeps a pointer to the xcb connection,
and if by some chance a pointer with the same value is returned the
next time a display connection is opened, it loses.