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/octave-signal-1.4.1/src/__fwht__.cc
Examining data/octave-signal-1.4.1/src/__ultrwin__.cc
Examining data/octave-signal-1.4.1/src/cl2bp.cc
Examining data/octave-signal-1.4.1/src/cl2bp_lib.cc
Examining data/octave-signal-1.4.1/src/cl2bp_lib.h
Examining data/octave-signal-1.4.1/src/medfilt1.cc
Examining data/octave-signal-1.4.1/src/octave-compat.h
Examining data/octave-signal-1.4.1/src/remez.cc
Examining data/octave-signal-1.4.1/src/sosfilt.cc
Examining data/octave-signal-1.4.1/src/upfirdn.cc

FINAL RESULTS:

data/octave-signal-1.4.1/src/cl2bp_lib.cc:46:7:  [4] (format) vsnprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
  if (vsnprintf(buf,20*1024-1,format,argptr) == -1) {
data/octave-signal-1.4.1/src/cl2bp_lib.cc:45:3:  [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 buf[20*1024];
data/octave-signal-1.4.1/src/cl2bp_lib.cc:47:5:  [2] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused). Risk is low because the source is a constant string.
    strcpy(buf, "#ERROR#");

ANALYSIS SUMMARY:

Hits = 3
Lines analyzed = 3132 in approximately 0.13 seconds (25037 lines/second)
Physical Source Lines of Code (SLOC) = 1950
Hits@level = [0]   8 [1]   0 [2]   2 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]  11 [1+]   3 [2+]   3 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 5.64103 [1+] 1.53846 [2+] 1.53846 [3+] 0.512821 [4+] 0.512821 [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.