--- diehard.c.orig	1998-04-03 01:29:40.000000000 +1000
+++ diehard.c	2014-07-19 14:11:38.000000000 +1000
@@ -149,9 +149,9 @@ void diehard()
 }
 
 
-main()
+int main(void)
 {
   diehard();
 
-   return;
-}
+   return 0;
+}