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/wzip-1.1.5/wzip.c

FINAL RESULTS:

data/wzip-1.1.5/wzip.c:346:3:  [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 st[256];
data/wzip-1.1.5/wzip.c:261:6:  [1] (buffer) getchar:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  c0=getchar();
data/wzip-1.1.5/wzip.c:264:6:  [1] (buffer) getchar:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  c1=getchar();
data/wzip-1.1.5/wzip.c:267:6:  [1] (buffer) getchar:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
  c2=getchar();
data/wzip-1.1.5/wzip.c:352:11:  [1] (buffer) getchar:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    st[i]=getchar();

ANALYSIS SUMMARY:

Hits = 5
Lines analyzed = 455 in approximately 0.03 seconds (15002 lines/second)
Physical Source Lines of Code (SLOC) = 285
Hits@level = [0]  28 [1]   4 [2]   1 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  33 [1+]   5 [2+]   1 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 115.789 [1+] 17.5439 [2+] 3.50877 [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.