Re: Bug#446628: emacs: crashes after opening frame on a different display

[Rob Browning]

(If possible, please preserve the 446628-forwarded@bugs.debian.org
 address in any replies.)

Yair Yarom <irush@cs.huji.ac.il> writes:

> After opening a frame on a different display: make-frame-on-display,
> when the other display is shutdown (e.g. logout, or X crash), the
> emacs crashes over xcb assertion:
>
>   emacs: xcb_xlib.c:41: xcb_xlib_lock: Assertion `!c->xlib.lock' failed
>
> This happens even if the emacs window on the remote display was
> closed before the logout.

I can verify this with the current emacs22 (based on Emacs 22.1)
package via Xnest.

In order to reproduce:

  - Run "Xnest :2" or similar.
  - Launch emacs on the host.
  - Run make-frame-on-display and specify :2.
  - Within Xnest, issue a C-x 5 0.
  - Close Xnest.

Here at least, Emacs will then crash with a segmentation fault.

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org; previously @cs.utexas.edu
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4