ListSG.freeFull

Convenience method, which frees all the memory used by a GSList, and calls the specified destroy function on every element's data.

free_func must not modify the list (eg, by removing the freed element from it).

It can be combined with g_steal_pointer() to ensure the list head pointer is not left dangling ­— this also has the nice property that the head pointer is cleared before any of the list elements are freed, to prevent double frees from free_func:

GSList *list_of_owned_things = …;  /<!-- -->* (transfer full) (element-type GObject) *<!-- -->/
g_slist_free_full (g_steal_pointer (&list_of_owned_things), g_object_unref);