fprintf(stderr, innum ? "??Format error (message %d) in " : "??Format error in ", outnum ? outnum : innum);
fprintf(stderr, "component %d\n", compnum);
fprintf(stderr, innum ? "??Format error (message %d) in " : "??Format error in ", outnum ? outnum : innum);
fprintf(stderr, "component %d\n", compnum);