--- old/src/share/vm/runtime/vmStructs.cpp	2015-03-31 20:23:59.000000000 +0200
+++ new/src/share/vm/runtime/vmStructs.cpp	2015-03-31 20:23:58.000000000 +0200
@@ -558,7 +558,6 @@
     static_field(GenCollectedHeap,             _gch,                                          GenCollectedHeap*)                     \
   nonstatic_field(GenCollectedHeap,            _young_gen,                                    Generation*)                           \
   nonstatic_field(GenCollectedHeap,            _old_gen,                                      Generation*)                           \
- nonstatic_field(GenCollectedHeap,             _n_gens,                                       int)                                   \
                                                                                                                                      \
   nonstatic_field(GenCollectorPolicy,          _young_gen_spec,                               GenerationSpec*)                       \
   nonstatic_field(GenCollectorPolicy,          _old_gen_spec,                                 GenerationSpec*)                       \
@@ -2257,8 +2256,6 @@
   declare_constant(CollectedHeap::SharedHeap)                             \
   declare_constant(CollectedHeap::GenCollectedHeap)                       \
                                                                           \
-  declare_constant(GenCollectedHeap::max_gens)                            \
-                                                                          \
   /* constants from Generation::Name enum */                              \
                                                                           \
   declare_constant(Generation::DefNew)                                    \