Add a test for strncat

1 files changed, 2 insertions, 3 deletions

diff --git a/include/string.h b/include/string.h
index 9bf17a0..8737f97 100644
--- a/include/string.h
+++ b/include/string.h
@@ -151,13 +151,12 @@ __access (read_only, 2, 3)
 _FORTIFY_FN(strncat) char *strncat(char *__d, const char *__s, size_t __n)
 {
         size_t __b = __bos(__d, 0);
-        size_t __sl, __dl;
 
         if (__n > __b) {
-                __sl = strlen(__s);
-                __dl = strlen(__d);
+                size_t __sl = strlen(__s);
                 if (__sl > __n)
                         __sl = __n;
+                size_t __dl = strlen(__d);
                 if (__sl + __dl + 1 > __b)
                         __builtin_trap();
         }