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/libverilog-perl-3.474/Preproc/VFileLine.cpp
Examining data/libverilog-perl-3.474/Preproc/VPreProc.cpp
Examining data/libverilog-perl-3.474/Preproc/VPreLex.h
Examining data/libverilog-perl-3.474/Preproc/VPreProc.h
Examining data/libverilog-perl-3.474/Preproc/VFileLine.h
Examining data/libverilog-perl-3.474/Parser/VParseGrammar.h
Examining data/libverilog-perl-3.474/Parser/VSymTable.h
Examining data/libverilog-perl-3.474/Parser/VParse.cpp
Examining data/libverilog-perl-3.474/Parser/VAst.cpp
Examining data/libverilog-perl-3.474/Parser/VParse.h
Examining data/libverilog-perl-3.474/Parser/VSymTable.cpp
Examining data/libverilog-perl-3.474/Parser/VParseLex.h
Examining data/libverilog-perl-3.474/Parser/VAst.h

FINAL RESULTS:

data/libverilog-perl-3.474/Preproc/VPreProc.cpp:575:19:  [4] (shell) popen:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
        if ((fp = popen(cmd.c_str(), "r")) == NULL) {
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:61:12:  [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.
    static char buf[100];
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:62:5:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
    sprintf(buf,"%d",i);
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:67:5:  [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 numbuf[20]; sprintf(numbuf, "%d", lineno());
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:67:22:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
    char numbuf[20]; sprintf(numbuf, "%d", lineno());
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:68:5:  [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 levelbuf[20]; sprintf(levelbuf, "%d", enterExit);
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:68:24:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
    char levelbuf[20]; sprintf(levelbuf, "%d", enterExit);
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:84:11:  [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).
	lineno = atoi(ln);
data/libverilog-perl-3.474/Preproc/VFileLine.cpp:100:41:  [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).
    if (isdigit(*textp)) enterExitRef = atoi(textp);
data/libverilog-perl-3.474/Preproc/VPreProc.cpp:567:5:  [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[INFILTER_IPC_BUFSIZ];
data/libverilog-perl-3.474/Preproc/VPreProc.cpp:580:14:  [2] (misc) open:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
        fd = open(filename.c_str(), O_RDONLY);
data/libverilog-perl-3.474/Parser/VParse.cpp:138:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy(buf+got, front.c_str(), len);
data/libverilog-perl-3.474/Preproc/VPreProc.cpp:586:16:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
	ssize_t got = read(fd, buf, todo);

ANALYSIS SUMMARY:

Hits = 13
Lines analyzed = 3281 in approximately 0.35 seconds (9247 lines/second)
Physical Source Lines of Code (SLOC) = 2262
Hits@level = [0]  10 [1]   2 [2]  10 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]  23 [1+]  13 [2+]  11 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 10.168 [1+] 5.74713 [2+] 4.86295 [3+] 0.442087 [4+] 0.442087 [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.