--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- include/cln/io.h
+++ include/cln/io.h
@@ -16,6 +16,8 @@ 
   #include <iostream>
 #endif
 
+#include <cstdio>
+
 namespace cln {
 
 // compatibility: