x and y are inout, not just out.
https://bugzilla.gnome.org/show_bug.cgi?id=674537
* GTK+ no longer uses gtk-update-icon-cache during its build. The
--enable-gtk2-dependency configure option has been removed.
+* The introspection annotations for the x and y parameters of
+ GtkMenuPositionFunc have been corrected from 'out' to 'inout'.
+ If you are using such a function from language-bindings, this
+ may require adjustments.
+
Release notes for 3.14
======================
/**
* GtkMenuPositionFunc:
* @menu: a #GtkMenu.
- * @x: (out): address of the #gint representing the horizontal
+ * @x: (inout): address of the #gint representing the horizontal
* position where the menu shall be drawn.
- * @y: (out): address of the #gint representing the vertical position
+ * @y: (inout): address of the #gint representing the vertical position
* where the menu shall be drawn. This is an output parameter.
* @push_in: (out): This parameter controls how menus placed outside
* the monitor are handled. If this is set to %TRUE and part of