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/r-cran-tidyr-1.1.2/src/melt.cpp
Examining data/r-cran-tidyr-1.1.2/src/fill.cpp
Examining data/r-cran-tidyr-1.1.2/src/cpp11.cpp
Examining data/r-cran-tidyr-1.1.2/src/simplifyPieces.cpp

FINAL RESULTS:

data/r-cran-tidyr-1.1.2/src/melt.cpp:44:7:  [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*)ACCESSOR(output) + i * xn * sizeof(CTYPE), \
data/r-cran-tidyr-1.1.2/src/melt.cpp:139:5:  [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*)DATAPTR(output) + i* nrow * sizeof(CTYPE), \

ANALYSIS SUMMARY:

Hits = 2
Lines analyzed = 559 in approximately 0.03 seconds (20275 lines/second)
Physical Source Lines of Code (SLOC) = 435
Hits@level = [0]   1 [1]   0 [2]   2 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   3 [1+]   2 [2+]   2 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 6.89655 [1+] 4.5977 [2+] 4.5977 [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.