test_name file-append-not-thread-safe test_description Calling {FILE}.append on different FILE objects writing different output files is not thread-safe, due to use of static local in external `file_append' copy_sub Ace $TEST Ace copy_raw test.e $CLUSTER test.e copy_raw worker.e $CLUSTER worker.e compile_frozen compile_result ok c_compile_work c_compile_result ok execute_work NONE exec_output1 3 1000 1000 execute_result ok compare exec_output1 output test_end