Use `ref<>` for UpdateNode

Remove additional reference counting as part of UpdateNodeList and
UpdateNode. Simplifies code.

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/Core/Memory.h b/lib/Core/Memory.h
index dfda433c..e4260c55 100644
--- a/lib/Core/Memory.h
+++ b/lib/Core/Memory.h
@@ -148,10 +148,12 @@ public:
 class ObjectState {
 private:
   friend class AddressSpace;
+  friend class ref<ObjectState>;
+
   unsigned copyOnWriteOwner; // exclusively for AddressSpace
 
-  friend class ObjectHolder;
-  unsigned refCount;
+  /// @brief Required by klee::ref-managed objects
+  class ReferenceCounter _refCount;
 
   const MemoryObject *object;