--- old/src/share/vm/utilities/globalDefinitions.hpp	2015-03-12 18:26:01.415012765 +0100
+++ new/src/share/vm/utilities/globalDefinitions.hpp	2015-03-12 18:26:01.235176039 +0100
@@ -1354,6 +1354,13 @@
   return (intptr_t) p;
 }
 
+// swap a & b
+template<class T> static void swap(T& a, T& b) {
+  T tmp = a;
+  a = b;
+  b = tmp;
+}
+
 // Printf-style formatters for fixed- and variable-width types as pointers and
 // integers.  These are derived from the definitions in inttypes.h.  If the platform
 // doesn't provide appropriate definitions, they should be provided in