Gtk::Widget::on_hide

[John Emmas <johne53 tiscali co uk>]

I'm trying to debug a program which keeps crashing in 
'Gtk::Widget::on_hide()'.  Here's what that function looks like:-

    void Gtk::Widget::on_hide()
    {
      BaseClassType *const base = static_cast<BaseClassType*>(
          g_type_class_peek_parent(G_OBJECT_GET_CLASS(gobject_)) // Get 
the parent class of the object class (The original underlying C class).
      );

      if(base && base->hide)
        (*base->hide)(gobj());
    }

Every time the crash occurs, variable 'gobject_' is always NULL. 
Although I'm currently trying to figure out why, the above code looks 
(to my untrained eye) as though it should be reasonably well behaved 
with a NULL gobject_.  It looks as if that function should be safe, even 
when gobject_ is NULL.  Is that a reasonable assessment or just wishful 
thinking on my part?

John