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/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c
Examining data/s3ql-3.3.2+dfsg/src/s3ql/endian_indep.h

FINAL RESULTS:

data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:794:5:  [4] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused).
    strcpy(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:747:9:  [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 ascii_chars[128];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:10054:13:  [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((char *)result_udata + char_pos * result_ukind, udata, (size_t) (ulength * result_ukind));
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11008:14:  [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 const char DIGIT_PAIRS_10[2*10*10+1] = {
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11020:14:  [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 const char DIGIT_PAIRS_8[2*8*8+1] = {
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11030:14:  [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 const char DIGITS_HEX[2*16+1] = {
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11122:5:  [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 digits[sizeof(size_t)*3+2];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11201:5:  [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 digits[sizeof(int)*3+2];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:11553:5:  [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 warning[200];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:12866:5:  [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 ctversion[4], rtversion[4];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:12870:9:  [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 message[200];
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:671:87:  [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).
#define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:792:52:  [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).
    __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1);
data/s3ql-3.3.2+dfsg/src/s3ql/deltadump.c:12914:65:  [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).
    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));

ANALYSIS SUMMARY:

Hits = 14
Lines analyzed = 13173 in approximately 0.35 seconds (37776 lines/second)
Physical Source Lines of Code (SLOC) = 9517
Hits@level = [0]   1 [1]   3 [2]  10 [3]   0 [4]   1 [5]   0
Hits@level+ = [0+]  15 [1+]  14 [2+]  11 [3+]   1 [4+]   1 [5+]   0
Hits/KSLOC@level+ = [0+] 1.57613 [1+] 1.47105 [2+] 1.15583 [3+] 0.105075 [4+] 0.105075 [5+]   0
Dot directories skipped = 2 (--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.