--- ddd/strclass.C	2011-10-04 17:49:36.428744325 -0700
+++ ddd/strclass.C-new	2011-10-04 17:49:29.016546965 -0700
@@ -39,6 +39,7 @@ extern "C" int malloc_verify();
 #include <limits.h>
 #include <new>
 #include <stdlib.h>
+#include <cstdio>
 
 void string::error(const char* msg) const
 {

.