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-mapdata-2.3.0/src/Gmake.c
Examining data/r-cran-mapdata-2.3.0/src/Lmake.c
Examining data/r-cran-mapdata-2.3.0/src/map.h

FINAL RESULTS:

data/r-cran-mapdata-2.3.0/src/Gmake.c:30:2:  [4] (format) fprintf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
	fprintf(stderr, s, a, b);
data/r-cran-mapdata-2.3.0/src/Gmake.c:40:2:  [4] (format) fprintf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
	fprintf(stderr, s, a, b);
data/r-cran-mapdata-2.3.0/src/Lmake.c:30:2:  [4] (format) fprintf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
	fprintf(stderr, s, a, b);
data/r-cran-mapdata-2.3.0/src/Lmake.c:40:2:  [4] (format) fprintf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
	fprintf(stderr, s, a, b);
data/r-cran-mapdata-2.3.0/src/Gmake.c:61:7:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
	*r = atoi(w);
data/r-cran-mapdata-2.3.0/src/Gmake.c:69:9:  [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.
	static char word[WORDSIZE];
data/r-cran-mapdata-2.3.0/src/Gmake.c:135:2:  [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 buf[128];
data/r-cran-mapdata-2.3.0/src/Gmake.c:160:4:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
			sprintf(buf, " %d", (int)r[j]);
data/r-cran-mapdata-2.3.0/src/Gmake.c:226:11:  [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).
	if((in = fopen(av[2], "rb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Gmake.c:228:12:  [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).
	if((in2 = fopen(av[3], "rb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Gmake.c:233:12:  [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).
	if((out = fopen(av[4], "wb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Gmake.c:236:22:  [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).
	if(!ascii && (Lin = fopen(av[5], "rb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Lmake.c:76:9:  [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.
	static char word[WORDSIZE];
data/r-cran-mapdata-2.3.0/src/Lmake.c:126:2:  [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 buf[128];
data/r-cran-mapdata-2.3.0/src/Lmake.c:158:4:  [2] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf. Risk is low because the source has a constant maximum length.
			sprintf(buf, " %.*f %.*f", Precision, xy[j].x, Precision, xy[j].y);
data/r-cran-mapdata-2.3.0/src/Lmake.c:234:14:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
	Precision = atoi(av[1]);
data/r-cran-mapdata-2.3.0/src/Lmake.c:237:11:  [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).
	if((in = fopen(av[4], "rb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Lmake.c:239:12:  [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).
	if((in2 = fopen(av[5], "rb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Lmake.c:244:19:  [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).
        if((out = fopen(av[6], "wb")) == NULL)
data/r-cran-mapdata-2.3.0/src/Gmake.c:74:11:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		if((c = fgetc(f)) < 0)
data/r-cran-mapdata-2.3.0/src/Gmake.c:81:7:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		c = fgetc(f);
data/r-cran-mapdata-2.3.0/src/Gmake.c:161:8:  [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).
			k = strlen(buf);
data/r-cran-mapdata-2.3.0/src/Lmake.c:81:11:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		if((c = fgetc(f)) < 0)
data/r-cran-mapdata-2.3.0/src/Lmake.c:89:7:  [1] (buffer) fgetc:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
		c = fgetc(f);
data/r-cran-mapdata-2.3.0/src/Lmake.c:159:8:  [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).
			k = strlen(buf);

ANALYSIS SUMMARY:

Hits = 25
Lines analyzed = 551 in approximately 0.05 seconds (10473 lines/second)
Physical Source Lines of Code (SLOC) = 476
Hits@level = [0]  14 [1]   6 [2]  15 [3]   0 [4]   4 [5]   0
Hits@level+ = [0+]  39 [1+]  25 [2+]  19 [3+]   4 [4+]   4 [5+]   0
Hits/KSLOC@level+ = [0+] 81.9328 [1+] 52.521 [2+] 39.916 [3+] 8.40336 [4+] 8.40336 [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.