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/delay-1.0/dtbuf.c
Examining data/delay-1.0/dtbuf.h
Examining data/delay-1.0/main.c
Examining data/delay-1.0/time_ms.c
Examining data/delay-1.0/time_ms.h

FINAL RESULTS:

data/delay-1.0/dtbuf.c:72:9:  [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(&dtbuf->data[dtbuf->head], &header, sizeof(header));
data/delay-1.0/dtbuf.c:111:13:  [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(&dtbuf->data[dtbuf->tail], &header, sizeof(header));
data/delay-1.0/dtbuf.c:67:14:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    if ((r = read(fd_in, &dtbuf->data[payload_index],
data/delay-1.0/main.c:79:17:  [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(&arg[2]) > 0) {

ANALYSIS SUMMARY:

Hits = 4
Lines analyzed = 423 in approximately 0.06 seconds (6872 lines/second)
Physical Source Lines of Code (SLOC) = 292
Hits@level = [0]   4 [1]   2 [2]   2 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   8 [1+]   4 [2+]   2 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 27.3973 [1+] 13.6986 [2+] 6.84932 [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.