--- a/util/test_qsort_r.c	2016-11-17 00:21:29.211561563 +0000
+++ b/util/test_qsort_r.c	2016-11-17 00:21:43.281493095 +0000
@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
+#include <stdlib.h>
 
 #include "cutest.h"