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/xcb-util-wm-0.4.1/icccm/icccm.c
Examining data/xcb-util-wm-0.4.1/icccm/xcb_icccm.h

FINAL RESULTS:

data/xcb-util-wm-0.4.1/icccm/icccm.c:570:3:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
  memcpy(hints, (xcb_size_hints_t *) xcb_get_property_value (reply),
data/xcb-util-wm-0.4.1/icccm/icccm.c:764:3:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
  memcpy(hints, (xcb_size_hints_t *) xcb_get_property_value(reply), length);
data/xcb-util-wm-0.4.1/icccm/icccm.c:353:18:  [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).
  int name_len = strlen(prop->instance_name);

ANALYSIS SUMMARY:

Hits = 3
Lines analyzed = 1898 in approximately 0.05 seconds (39568 lines/second)
Physical Source Lines of Code (SLOC) = 1001
Hits@level = [0]   0 [1]   1 [2]   2 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   3 [1+]   3 [2+]   2 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 2.997 [1+] 2.997 [2+] 1.998 [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.