--- old/src/hotspot/share/oops/instanceKlass.cpp	2019-11-22 13:54:13.200130241 +0100
+++ new/src/hotspot/share/oops/instanceKlass.cpp	2019-11-22 13:54:12.952126048 +0100
@@ -478,6 +478,7 @@
   _init_thread(NULL),
   _init_state(allocated),
   _reference_type(parser.reference_type()),
+  _value_field_klasses(NULL),
   _adr_valueklass_fixed_block(NULL)
 {
   set_vtable_length(parser.vtable_size());
@@ -504,6 +505,9 @@
   if (UseBiasedLocking && BiasedLocking::enabled()) {
     set_prototype_header(markWord::biased_locking_prototype());
   }
+  if (has_value_fields()) {
+    _value_field_klasses = (const Klass**) adr_value_fields_klasses();
+  }
 }
 
 void InstanceKlass::deallocate_methods(ClassLoaderData* loader_data,