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/ruby-cairo-1.16.6/ext/cairo/rb_cairo.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo.h
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_constants.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_context.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_device.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_exception.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_font_extents.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_font_face.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_font_options.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_glyph.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_io.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_io.h
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_matrix.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_path.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_pattern.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.h
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_quartz_surface.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_rectangle.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_region.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_scaled_font.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_surface.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_text_cluster.c
Examining data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_text_extents.c

FINAL RESULTS:

data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c:67:3:  [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 (const_name, prefix);
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c:68:3:  [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 (const_name + prefix_len, normalized_name);
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_io.c:136:3:  [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 ((void *)closure->data, (const void *) StringValuePtr (result), length);
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c:46:7:  [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 *) &glyphs[i],
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_surface.c:780:7:  [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 (data, raw_data, length);
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c:63:16:  [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).
  prefix_len = strlen (prefix);
data/ruby-cairo-1.16.6/ext/cairo/rb_cairo_private.c:64:25:  [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).
  normalized_name_len = strlen (normalized_name);

ANALYSIS SUMMARY:

Hits = 7
Lines analyzed = 11879 in approximately 0.24 seconds (49191 lines/second)
Physical Source Lines of Code (SLOC) = 9835
Hits@level = [0]   0 [1]   2 [2]   3 [3]   0 [4]   2 [5]   0
Hits@level+ = [0+]   7 [1+]   7 [2+]   5 [3+]   2 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 0.711744 [1+] 0.711744 [2+] 0.508388 [3+] 0.203355 [4+] 0.203355 [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.