Error: /tmp/0ezmHW1uaQ.dot: syntax error in line 1 near 'diagraph' 00001: diagraph G { 00002: main -> parse -> execute; 00003: main -> init; 00004: main -> cleanup; 00005: execute -> make_string; 00006: execute -> printf; 00007: init -> make_string; 00008: main -> printf; 00009: execute -> compare; 00010: }