--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- file.h
+++ file.h
@@ -12,6 +12,8 @@ 
  * Author: John Whitney <jjw@deltup.org>
  */
 
+#include <cstdio>
+
 class IStream {
 public:
   virtual unsigned read(void *data, unsigned num) = 0;