--- old/src/cpu/x86/vm/vm_version_x86.hpp	2015-09-16 15:17:56.000000000 -0700
+++ new/src/cpu/x86/vm/vm_version_x86.hpp	2015-09-16 15:17:56.000000000 -0700
@@ -29,6 +29,7 @@
 #include "runtime/vm_version.hpp"
 
 class VM_Version : public Abstract_VM_Version {
+  friend class VMStructs;
 public:
   // cpuid result register layouts.  These are all unions of a uint32_t
   // (in case anyone wants access to the register as a whole) and a bitfield.