Introspection annotations need adding as follows.  The following function parameters have missing (out) annotations:

gtkaccelgroup.c
gtk_accel_group_query: n_entries  -- add (out)

gtkcellarea.c
gtk_cell_area_class_list_cell_properties: n_properties  -- add (out)

gtkclipboard.c
gtk_clipboard_wait_for_rich_text: length  -- add (out)
gtk_clipboard_wait_for_targets: n_targets  -- add (out)

gtkrecentchooser.c
gtk_recent_chooser_get_uris: length  -- add (out)

gtkselection.c
gtk_target_list_find: info  -- add (out)

gtktextbufferrichtext.c
gtk_text_buffer_get_serialize_formats: n_formats  -- add (out)
gtk_text_buffer_get_deserialize_formats: n_formats  -- add (out)
gtk_text_buffer_serialize: length  -- add (out)

gtktreemodel.c
gtk_tree_path_get_indices_with_depth: depth  -- add (out)

gtkwidget.c
gtk_widget_class_list_style_properties: n_properties  -- add (out)


The following function parameter has a missing (array ...) annotation:

gtkaccelgroup.c
gtk_accelerator_parse_with_keycode: accelerator_codes
  -- add (array zero-terminated=1) (transfer full)
  -- add comment:
      Use g_free() to free the array when it is no longer needed.