Merge pull request #6258 from vcaputo/overflow

fix strxcpyx null termination overflows
2017-07-03 21:29:14 -04:00
parent 38d9338588 54d46a789e
commit 2240fc54e9
2 changed files with 35 additions and 4 deletions
@@ -51,6 +51,13 @@ static void test_strpcpyf(void) {

        assert_se(streq(target, "space left: 25. foobar"));
        assert_se(space_left == 3);
+
+        /* test overflow */
+        s = target;
+        space_left = strpcpyf(&s, 12, "00 left: %i. ", 999);
+        assert_se(streq(target, "00 left: 99"));
+        assert_se(space_left == 0);
+        assert_se(target[12] == '2');
 }

 static void test_strpcpyl(void) {