Fix integer overflow issue

Possible integer underflow: left operand is tainted.
An integer underflow may occur due to arithmetic operation (unsigned subtraction) between values { [0, 4294967295] } and '1',
where the first value comes from the expression 'strlen(*worditer)'

Change-Id: I6664af6907644f34e5225fff91dca5209f55eaf0
Signed-off-by: Jihoon Kim <jihoon48.kim@samsung.com>

diff --git a/bench/atom.c b/bench/atom.c
index 7d78f64..e4c290b 100644 (file)
--- a/bench/atom.c
+++ b/bench/atom.c
@@ -47,6 +47,7 @@ main(void)
     const char *text;
     struct bench bench;
     char *elapsed;
+    size_t word_len;
 
     darray_init(words);
     file = fopen("/usr/share/dict/words", "rb");
@@ -68,7 +69,8 @@ main(void)
         assert(table);
 
         darray_foreach(worditer, words) {
-            atom = atom_intern(table, *worditer, strlen(*worditer) - 1, true);
+            word_len = strlen(*worditer) > 0 ? strlen(*worditer) - 1 : 0;
+            atom = atom_intern(table, *worditer, word_len, true);
             assert(atom != XKB_ATOM_NONE);
 
             text = atom_text(table, atom);