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/flowcanvas-0.7.1+dfsg0/flowcanvas/Ellipse.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/types.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Canvas.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Connectable.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Port.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/flowcanvas.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Module.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Item.hpp
Examining data/flowcanvas-0.7.1+dfsg0/flowcanvas/Connection.hpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Ellipse.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Item.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Port.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Connectable.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Connection.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Module.cpp
Examining data/flowcanvas-0.7.1+dfsg0/src/Canvas.cpp

FINAL RESULTS:

data/flowcanvas-0.7.1+dfsg0/src/Canvas.cpp:1333:33:  [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).
	gvRender(gvc, G, (char*)"dot", fopen("/dev/null", "w"));
data/flowcanvas-0.7.1+dfsg0/src/Canvas.cpp:1336:14:  [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).
		FILE* fd = fopen(filename.c_str(), "w");

ANALYSIS SUMMARY:

Hits = 2
Lines analyzed = 4985 in approximately 0.18 seconds (27940 lines/second)
Physical Source Lines of Code (SLOC) = 3414
Hits@level = [0]   0 [1]   0 [2]   2 [3]   0 [4]   0 [5]   0
Hits@level+ = [0+]   2 [1+]   2 [2+]   2 [3+]   0 [4+]   0 [5+]   0
Hits/KSLOC@level+ = [0+] 0.585823 [1+] 0.585823 [2+] 0.585823 [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.