--- old/src/hotspot/share/gc/z/zBarrier.inline.hpp	2019-09-04 13:48:34.525036640 +0200
+++ new/src/hotspot/share/gc/z/zBarrier.inline.hpp	2019-09-04 13:48:34.272028078 +0200
@@ -326,6 +326,11 @@
   root_barrier<is_good_or_null_fast_path, mark_barrier_on_root_oop_slow_path>(p, o);
 }
 
+inline void ZBarrier::mark_barrier_on_invisible_root_oop_field(oop* p) {
+  const oop o = *p;
+  root_barrier<is_good_or_null_fast_path, mark_barrier_on_invisible_root_oop_slow_path>(p, o);
+}
+
 //
 // Relocate barrier
 //