--- old/src/share/vm/memory/iterator.hpp	2016-03-06 20:43:11.631223645 -0500
+++ new/src/share/vm/memory/iterator.hpp	2016-03-06 20:43:11.511222938 -0500
@@ -285,9 +285,12 @@
  protected:
   void do_nmethod(nmethod* nm);
  public:
+  // If fix_relocations(), then cl must copy objects to their new location immediately to avoid
+  // patching nmethods with the old locations.
   CodeBlobToOopClosure(OopClosure* cl, bool fix_relocations) : _cl(cl), _fix_relocations(fix_relocations) {}
   virtual void do_code_blob(CodeBlob* cb);
 
+  bool fix_relocations() const { return _fix_relocations; }
   const static bool FixRelocations = true;
 };