Wlroots does not call wl_list_remove(&destroy.listener_list) after the destroy signal fires. It is the responsibility of the subscriber to handle their own wl_listener being left with an invalid link.
This was an issue because it might happen that the kiwmi_object is not destroyed immediately, but only later by a lua gc handler that finally decrements the refcount to zero. We have to ensure that kiwmi_object_destroy can succeed.
Here we first use wl_list_remove to unsubscribe from the signal, and then wl_list_init to leave the link in a valid state for kiwmi_object_destroy.
Wlroots does not call
wl_list_remove(&destroy.listener_list)after the destroy signal fires. It is the responsibility of the subscriber to handle their own wl_listener being left with an invalid link.This was an issue because it might happen that the kiwmi_object is not destroyed immediately, but only later by a lua gc handler that finally decrements the refcount to zero. We have to ensure that
kiwmi_object_destroycan succeed.Here we first use
wl_list_removeto unsubscribe from the signal, and thenwl_list_initto leave the link in a valid state forkiwmi_object_destroy.