--- old/src/share/vm/memory/collectorPolicy.hpp	2014-10-17 15:34:50.000000000 +0200
+++ new/src/share/vm/memory/collectorPolicy.hpp	2014-10-17 15:34:50.000000000 +0200
@@ -216,7 +216,8 @@
 };
 
 class GenCollectorPolicy : public CollectorPolicy {
-friend class TestGenCollectorPolicy;
+  friend class TestGenCollectorPolicy;
+  friend class VMStructs;
  protected:
   size_t _min_young_size;
   size_t _initial_young_size;
@@ -229,7 +230,8 @@
   // time. When using large pages they can differ.
   size_t _gen_alignment;
 
-  GenerationSpec **_generations;
+  GenerationSpec* _young_gen_spec;
+  GenerationSpec* _old_gen_spec;
 
   // Return true if an allocation should be attempted in the older generation
   // if it fails in the younger generation.  Return false, otherwise.
@@ -269,9 +271,14 @@
 
   int number_of_generations() { return 2; }
 
-  virtual GenerationSpec **generations() {
-    assert(_generations != NULL, "Sanity check");
-    return _generations;
+  virtual GenerationSpec* young_gen_spec() const {
+    assert(_young_gen_spec != NULL, "Sanity check");
+    return _young_gen_spec;
+  }
+
+  virtual GenerationSpec* old_gen_spec() const {
+    assert(_old_gen_spec != NULL, "Sanity check");
+    return _old_gen_spec;
   }
 
   virtual GenCollectorPolicy* as_generation_policy() { return this; }