diff -ru yaml-cpp-0.2.6//src/ptr_stack.h yaml-cpp//src/ptr_stack.h
--- a/src/ptr_stack.h	2011-03-03 09:11:14.000000000 +0100
+++ b/src/ptr_stack.h	2011-05-09 13:59:18.039965165 +0200
@@ -8,6 +8,7 @@
 #include "yaml-cpp/noncopyable.h"
 #include <memory>
 #include <vector>
+#include <cstdlib>
 
 template <typename T>
 class ptr_stack: private YAML::noncopyable
diff -ru yaml-cpp-0.2.6//src/ptr_vector.h yaml-cpp//src/ptr_vector.h
--- a/src/ptr_vector.h	2011-03-16 02:13:41.000000000 +0100
+++ b/src/ptr_vector.h	2011-05-09 13:58:46.607892700 +0200
@@ -8,6 +8,7 @@
 #include "yaml-cpp/noncopyable.h"
 #include <memory>
 #include <vector>
+#include <cstdlib>
 
 namespace YAML {