--- old/src/share/vm/memory/collectorPolicy.hpp	2013-10-31 16:44:08.000000000 +0100
+++ new/src/share/vm/memory/collectorPolicy.hpp	2013-10-31 16:44:07.000000000 +0100
@@ -65,8 +65,8 @@
   virtual void initialize_flags();
   virtual void initialize_size_info();
 
-  virtual void assert_flags();
-  virtual void assert_size_info();
+  DEBUG_ONLY(virtual void assert_flags();)
+  DEBUG_ONLY(virtual void assert_size_info();)
 
   size_t _initial_heap_byte_size;
   size_t _max_heap_byte_size;
@@ -239,8 +239,8 @@
   void initialize_flags();
   void initialize_size_info();
 
-  void assert_flags();
-  void assert_size_info();
+  DEBUG_ONLY(void assert_flags();)
+  DEBUG_ONLY(void assert_size_info();)
 
   // Try to allocate space by expanding the heap.
   virtual HeapWord* expand_heap_and_allocate(size_t size, bool is_tlab);
@@ -315,8 +315,8 @@
   void initialize_flags();
   void initialize_size_info();
 
-  void assert_flags();
-  void assert_size_info();
+  DEBUG_ONLY(void assert_flags();)
+  DEBUG_ONLY(void assert_size_info();)
 
  public:
   TwoGenerationCollectorPolicy() : GenCollectorPolicy(), _min_gen1_size(0),