Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler. Number of rules (primarily dangerous function names) in C/C++ ruleset: 223 Examining data/ioport-1.2/port.c FINAL RESULTS: data/ioport-1.2/port.c:95:9: [3] (buffer) getopt_long: Some older implementations do not protect against internal buffer overflows (CWE-120, CWE-20). Check implementation on installation, or limit the size of all string inputs. c = getopt_long (argc, argv, options, long_options, &option_index); ANALYSIS SUMMARY: Hits = 1 Lines analyzed = 216 in approximately 0.04 seconds (6044 lines/second) Physical Source Lines of Code (SLOC) = 154 Hits@level = [0] 10 [1] 0 [2] 0 [3] 1 [4] 0 [5] 0 Hits@level+ = [0+] 11 [1+] 1 [2+] 1 [3+] 1 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 71.4286 [1+] 6.49351 [2+] 6.49351 [3+] 6.49351 [4+] 0 [5+] 0 Dot directories skipped = 1 (--followdotdir overrides) Minimum risk level = 1 Not every hit is necessarily a security vulnerability. There may be other security vulnerabilities; review your code! See 'Secure Programming HOWTO' (https://dwheeler.com/secure-programs) for more information.