Analyse following RPM build log snippet. Describe contents accurately, without speculation or suggestions for resolution.            
Your analysis must be as concise as possible, while keeping relevant information intact.
Snippet: 
gdl-dock-item.c: In function âgdl_dock_item_class_initâ:
gdl-dock-item.c:358:44: error: passing argument 1 of âgdl_dock_object_class_set_is_compoundâ from incompatible pointer type [-Wincompatible-pointer-types]
  358 |     gdl_dock_object_class_set_is_compound (object_class, FALSE);
      |                                            ^~~~~~~~~~~~
      |                                            |
      |                                            GObjectClass * {aka struct _GObjectClass *}
An incompatible pointer type is used as a parameter of a function. Expected type is GdlDockObjectClass but argument is GObjectClass.