copying branch over from other 2013 repo
diff --git a/aos/common/control_loop/Timing.cpp b/aos/common/control_loop/Timing.cpp
index 63fda44..6db179c 100644
--- a/aos/common/control_loop/Timing.cpp
+++ b/aos/common/control_loop/Timing.cpp
@@ -1,6 +1,8 @@
-#include "aos/common/logging/logging.h"
 #include "aos/common/control_loop/Timing.h"
 
+#include <string.h>
+
+#include "aos/common/logging/logging.h"
 #include "aos/common/time.h"
 
 namespace aos {