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/libavl-0.3.5/avl.c
Examining data/libavl-0.3.5/avl.h
Examining data/libavl-0.3.5/avlsort.c
Examining data/libavl-0.3.5/setdiff.c

FINAL RESULTS:

data/libavl-0.3.5/setdiff.c:42:6:  [2] (misc) fopen:
  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).
	f = fopen(fname, "r");
data/libavl-0.3.5/avlsort.c:76:9:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
				r = read(STDIN_FILENO, eb, bs);
data/libavl-0.3.5/avlsort.c:94:8:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
			r = read(STDIN_FILENO, eb, 65536);
data/libavl-0.3.5/setdiff.c:49:9:  [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).
		len = strlen(s);

ANALYSIS SUMMARY:

Hits = 4
Lines analyzed = 1014 in approximately 0.06 seconds (18011 lines/second)
Physical Source Lines of Code (SLOC) = 671
Hits@level = [0]   9 [1]   3 [2]   1 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]  13 [1+]   4 [2+]   1 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 19.3741 [1+] 5.96125 [2+] 1.49031 [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.