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/ircmarkers-0.15/overlap.c

FINAL RESULTS:

data/ircmarkers-0.15/overlap.c:195:19:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    image_width = atoi(argv[1]);
data/ircmarkers-0.15/overlap.c:196:20:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    image_height = atoi(argv[2]);
data/ircmarkers-0.15/overlap.c:197:14:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    offset = atoi(argv[3]);

ANALYSIS SUMMARY:

Hits = 3
Lines analyzed = 254 in approximately 0.06 seconds (4210 lines/second)
Physical Source Lines of Code (SLOC) = 199
Hits@level = [0]   6 [1]   0 [2]   3 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   9 [1+]   3 [2+]   3 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 45.2261 [1+] 15.0754 [2+] 15.0754 [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.