cairo-clock crashes with SIGABRT at large display sizes

[Alistair Buxton]

To reproduce:

cairo-clock -w 1000 -h 1000

Output:

(cairo-clock:12800): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(cairo-clock:12800): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(cairo-clock:12800): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(cairo-clock:12800): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(cairo-clock:12800): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(cairo-clock:12800): Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated

(cairo-clock:12800): libglade-WARNING **: could not find a parent that handles internal children for `vbox'
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
[xcb] Aborting, sorry about that.
cairo-clock: ../../src/xcb_io.c:273: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.
Aborted (core dumped)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: cairo-clock 0.3.4-2ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Thu Jan 5 22:57:32 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
SourcePackage: cairo-clock
UpgradeStatus: Upgraded to oneiric on 2011-10-09 (88 days ago)