+ no_error = 0, /**< no error */
+ error_ent_not_cont = 1, /**< overwritten entity not in superclass */
+ error_null_mem = 2, /**< compound contains NULL member */
+ error_const_on_wrong_irg = 3, /**< constant placed on wrong IRG */
+ error_existent_entity_without_irg = 4 /**< Method ents with pec_exist must have an irg */