test_name static_buffer_for_trace_not_thread_safe test_description Reveals the problem static buffer for trace printing is not thread safe. copy_sub Ace $TEST Ace copy_raw test.e $CLUSTER test.e copy_raw worker.e $CLUSTER worker.e copy_raw worker1.e $CLUSTER worker1.e copy_raw worker2.e $CLUSTER worker2.e copy_raw worker3.e $CLUSTER worker3.e compile_final compile_result ok c_compile_final c_compile_result ok execute_final NONE exec_output1 100 10000 execute_result ok compare exec_output1 output execute_final NONE exec_output2 10000 100 execute_result ok compare exec_output2 output test_end