- /* seq_cst is just a 'don't care' parameter */
- ret = model->switch_to_master(new ModelAction(THREAD_JOIN, memory_order_seq_cst, NULL, VALUE_NONE));
+ ret = model->switch_to_master(NULL);
+ /* seq_cst is just a 'don't care' parameter */
+ ret = model->switch_to_master(new ModelAction(THREAD_JOIN, memory_order_seq_cst, NULL, VALUE_NONE));