--- pad.cpp~	2007-04-02 12:38:12.000000000 +0000
+++ pad.cpp	2007-04-02 12:38:21.000000000 +0000
@@ -2,6 +2,7 @@
 #include "synparam.h"
 #include "pad.h"
 #include <pthread.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <sys/shm.h>