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/delta-2006.08.03/test0_delta/hello.c
Examining data/delta-2006.08.03/topformflat.c

FINAL RESULTS:

data/delta-2006.08.03/topformflat.c:1820:17:  [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).
    threshold = atoi(argv[1]);    // user-specified threshold
data/delta-2006.08.03/topformflat.c:570:14:  [1] (buffer) getc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
data/delta-2006.08.03/topformflat.c:1558:30:  [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 yy_scan_bytes(yy_str,strlen(yy_str) );

ANALYSIS SUMMARY:

Hits = 3
Lines analyzed = 1840 in approximately 0.08 seconds (22283 lines/second)
Physical Source Lines of Code (SLOC) = 1149
Hits@level = [0]  11 [1]   2 [2]   1 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  14 [1+]   3 [2+]   1 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 12.1845 [1+] 2.61097 [2+] 0.870322 [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.