src/hotspot/share/gc/z/zBarrierSet.hpp

@@ -38,11 +38,11 @@
   virtual void on_thread_create(Thread* thread);
   virtual void on_thread_destroy(Thread* thread);
   virtual void on_thread_attach(Thread* thread);
   virtual void on_thread_detach(Thread* thread);
 
-  virtual void print_on(outputStream* st) const {}
+  virtual void print_on(outputStream* st) const;
 
   template <DecoratorSet decorators, typename BarrierSetT = ZBarrierSet>
   class AccessBarrier : public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
   private:
     typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;