From 6710df7ec38f1a05ab8a36cb0c1fb5a4fc11faeb Mon Sep 17 00:00:00 2001
From: Krishna Vedala <7001608+kvedala@users.noreply.github.com>
Date: Sun, 28 Jun 2020 15:57:00 -0400
Subject: [PATCH] fix LGTM - limit malloc range

---
 misc/lexicographic_permutations.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/misc/lexicographic_permutations.c b/misc/lexicographic_permutations.c
index cccb9fbb5..10f8cedff 100644
--- a/misc/lexicographic_permutations.c
+++ b/misc/lexicographic_permutations.c
@@ -50,9 +50,13 @@ void PrintSortedPermutations(char *str)
 
 int main()
 {
-    unsigned int n;  // size of string
-    scanf("%u\n", &n);
-
+    int n;  // size of string
+    scanf("%d\n", &n);
+    if (n <= 0 || n >= 1000)
+    {
+        perror("Input number out of range: >0 and <1000\n");
+        return -1;
+    }
     char *str = (char *)malloc(n * sizeof(char));
     scanf("%s", str);
     PrintSortedPermutations(str);