- xbt_assert0(filename, "Unable to use a null file descriptor\n");
- dag_dot = agopen((char*)filename,Agstrictdirected,0);
+ xbt_assert(filename, "Unable to use a null file descriptor\n");
+//dag_dot = agopen((char*)filename,Agstrictdirected,0);
+ FILE *in_file = fopen(filename, "r");
+ dag_dot = agread(in_file, NIL(Agdisc_t *));