diff -urN vigra-1.7.1.old/test/utilities/test.cxx vigra-1.7.1/test/utilities/test.cxx
--- vigra-1.7.1.old/test/utilities/test.cxx	2011-09-04 17:13:53.362610527 +0200
+++ vigra-1.7.1/test/utilities/test.cxx	2011-09-04 17:27:55.772600423 +0200
@@ -33,6 +33,7 @@
 /*                                                                      */
 /************************************************************************/
 
+#include <cstddef>
 #include <iostream>
 #include <iterator>
 #include "unittest.hxx"