+int ERR_count_to_mark(void);
+
+ERR_STATE *OSSL_ERR_STATE_new(void);
+void OSSL_ERR_STATE_save(ERR_STATE *es);
+void OSSL_ERR_STATE_save_to_mark(ERR_STATE *es);
+void OSSL_ERR_STATE_restore(const ERR_STATE *es);
+void OSSL_ERR_STATE_free(ERR_STATE *es);