diff -r f2bd6a3993a7 -r 872465abbfe3 src/hotspot/share/gc/z/vmStructs_z.hpp
--- a/src/hotspot/share/gc/z/vmStructs_z.hpp	Tue Sep 24 17:08:18 2019 +0200
+++ b/src/hotspot/share/gc/z/vmStructs_z.hpp	Tue Sep 24 17:08:19 2019 +0200
@@ -104,8 +104,7 @@
   declare_constant(ZAddressOffsetShift)                                                              \
   declare_constant(ZAddressOffsetBits)                                                               \
   declare_constant(ZAddressOffsetMask)                                                               \
-  declare_constant(ZAddressOffsetMax)                                                                \
-  declare_constant(ZAddressSpaceStart)
+  declare_constant(ZAddressOffsetMax)
 
 #define VM_TYPES_ZGC(declare_type, declare_toplevel_type, declare_integer_type)                      \
   declare_toplevel_type(ZGlobalsForVMStructs)                                                        \