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6c442fc4f7
If something quickly maps and unmaps a window, then we'll immediately create and destroy the Wayland surface that cooresponds to that window. If our mouse pointer is over the window when the surface is created, we'll receive a enter on the window. Since resource creation and destruction is not synchronous, that means that the compositor will queue up an event for a resource that's eventually destroyed. On the client-side, when we receive this message, we note that the resource isn't allocated, and get a NULL surface in our enter handler. We immediately try to dereference this, and then crash. This was caused by running gtkperf while moving the window a lot. Reviewed-by: Daniel Stone <daniel@fooishbar.org> Signed-off-by: Jasper St. Pierre <jstpierre@mecheye.net>
X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the
Xorg mailing list:
http://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
http://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
http://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
http://wiki.x.org/wiki/GitPage