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/raspell-1.3/ext/raspell.h
Examining data/raspell-1.3/ext/raspell.c

FINAL RESULTS:

data/raspell-1.3/ext/raspell.c:168:5:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
    strcat(result, cword);
data/raspell-1.3/ext/raspell.c:167:5:  [2] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused). Risk is low because the
  source is a constant string.
    strcat(result, "\\b");
data/raspell-1.3/ext/raspell.c:169:5:  [2] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused). Risk is low because the
  source is a constant string.
    strcat(result, "\\b");
data/raspell-1.3/ext/raspell.c:165:28:  [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).
    char *result = malloc((strlen(cword)+5)*sizeof(char));
data/raspell-1.3/ext/raspell.c:170:31:  [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).
    word = rb_reg_new(result, strlen(result), 0);
data/raspell-1.3/ext/raspell.c:543:20:  [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).
                if(strlen(StringValuePtr(rword)) == 0) continue;
data/raspell-1.3/ext/raspell.c:549:27:  [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).
                offset += strlen(StringValuePtr(rword))-strlen(StringValuePtr(word));
data/raspell-1.3/ext/raspell.c:549:57:  [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).
                offset += strlen(StringValuePtr(rword))-strlen(StringValuePtr(word));

ANALYSIS SUMMARY:

Hits = 8
Lines analyzed = 741 in approximately 0.03 seconds (24011 lines/second)
Physical Source Lines of Code (SLOC) = 439
Hits@level = [0]   1 [1]   5 [2]   2 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]   9 [1+]   8 [2+]   3 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 20.5011 [1+] 18.2232 [2+] 6.83371 [3+] 2.2779 [4+] 2.2779 [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.