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/cl-regex-1/speedtest.c FINAL RESULTS: data/cl-regex-1/speedtest.c:19:5: [2] (buffer) char: Statically-sized arrays can be improperly restricted, leading to potential overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use functions that limit length, or ensure that the size is larger than the maximum possible length. char error[256]; data/cl-regex-1/speedtest.c:27:13: [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). candlen = strlen(candstr); ANALYSIS SUMMARY: Hits = 2 Lines analyzed = 86 in approximately 0.02 seconds (4813 lines/second) Physical Source Lines of Code (SLOC) = 68 Hits@level = [0] 9 [1] 1 [2] 1 [3] 0 [4] 0 [5] 0 Hits@level+ = [0+] 11 [1+] 2 [2+] 1 [3+] 0 [4+] 0 [5+] 0 Hits/KSLOC@level+ = [0+] 161.765 [1+] 29.4118 [2+] 14.7059 [3+] 0 [4+] 0 [5+] 0 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.