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

@@ -93,5 +93,9 @@
 
 void ZBarrierSet::on_thread_detach(Thread* thread) {
   // Flush and free any remaining mark stacks
   ZHeap::heap()->mark_flush_and_free(thread);
 }
+
+void ZBarrierSet::print_on(outputStream* st) const {
+  st->print_cr("ZBarrierSet");
+}