--- old/src/hotspot/share/oops/klass.hpp	2019-08-13 12:39:51.940258743 +0200
+++ new/src/hotspot/share/oops/klass.hpp	2019-08-13 12:39:51.644253609 +0200
@@ -188,7 +188,7 @@
 
   // Constructor
   Klass(KlassID id);
-  Klass() : _id(KlassID(-1)), _prototype_header(0) { assert(DumpSharedSpaces || UseSharedSpaces, "only for cds"); }
+  Klass() : _id(KlassID(-1)) { assert(DumpSharedSpaces || UseSharedSpaces, "only for cds"); }
 
   void* operator new(size_t size, ClassLoaderData* loader_data, size_t word_size, TRAPS) throw();