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/python-coverage-5.1+dfsg.1/coverage/ctracer/datastack.c
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/datastack.h
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/filedisp.c
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/filedisp.h
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/module.c
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/stats.h
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/tracer.c
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/tracer.h
Examining data/python-coverage-5.1+dfsg.1/coverage/ctracer/util.h

FINAL RESULTS:

data/python-coverage-5.1+dfsg.1/coverage/ctracer/tracer.c:130:21:  [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).
    return spaces + strlen(spaces) - n*2;

ANALYSIS SUMMARY:

Hits = 1
Lines analyzed = 1672 in approximately 0.21 seconds (8037 lines/second)
Physical Source Lines of Code (SLOC) = 1219
Hits@level = [0]  10 [1]   1 [2]   0 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  11 [1+]   1 [2+]   0 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 9.02379 [1+] 0.820345 [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.