Created attachment 192010 [details] [review]
patch

Right now, Clutter tries to allocate/free every XGenericEvent that gets through its ClutterDeviceManagerXI2, this unfortunately doesn't play well if both GTK+ and Clutter are to handle X Events in the same application, as the cookie data can be allocated just once for each cookie event, so it needs to persist throughout all handlers.

I'm attaching a patch that improves the allocation schema, so it is only guaranteed to allocate the cookie when clutter gets the event itself via XNextEvent(), and only frees a cookie that it has allocated itself.