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/pybigwig-0.3.17/pyBigWig.c Examining data/pybigwig-0.3.17/pyBigWig.h FINAL RESULTS: data/pybigwig-0.3.17/pyBigWig.c:184:9: [1] (buffer) strncpy: Easily used incorrectly; doesn't always \0-terminate or check for invalid pointers [MS-banned] (CWE-120). strncpy(o, p, stride); data/pybigwig-0.3.17/pyBigWig.c:1841:11: [1] (buffer) strlen: Does not handle strings that are not \0-terminated; if given one it may perform an over-read (it could cause a crash if unprotected) (CWE-126). len = strlen(str); ANALYSIS SUMMARY: Hits = 2 Lines analyzed = 2385 in approximately 0.09 seconds (26247 lines/second) Physical Source Lines of Code (SLOC) = 1800 Hits@level = [0] 2 [1] 2 [2] 0 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 4 [1+] 2 [2+] 0 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 2.22222 [1+] 1.11111 [2+] 0 [3+] 0 [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.