diff -r 6a2d73358ff7 -r c760f78e0a53 src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp
--- a/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Thu Dec 02 14:00:03 2010 -0500
+++ b/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Wed Dec 01 15:04:06 2010 +0100
@@ -25,6 +25,7 @@
 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARMARKBITMAP_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PARMARKBITMAP_HPP
 
+#include "memory/memRegion.hpp"
 #include "gc_implementation/parallelScavenge/psVirtualspace.hpp"
 #include "utilities/bitMap.inline.hpp"