--- old/src/share/vm/runtime/vmStructs.cpp	2014-10-17 16:10:09.000000000 +0200
+++ new/src/share/vm/runtime/vmStructs.cpp	2014-10-17 16:10:09.000000000 +0200
@@ -534,7 +534,6 @@
                                                                                                                                      \
   nonstatic_field(Generation,                  _reserved,                                     MemRegion)                             \
   nonstatic_field(Generation,                  _virtual_space,                                VirtualSpace)                          \
-  nonstatic_field(Generation,                  _level,                                        int)                                   \
   nonstatic_field(Generation,                  _stat_record,                                  Generation::StatRecord)                \
                                                                                                                                      \
   nonstatic_field(Generation::StatRecord,      invocations,                                   int)                                   \