diff -r 21dccfac0ec5 -r 90ead0febf56 src/hotspot/share/jfr/leakprofiler/chains/edgeStore.cpp
--- a/src/hotspot/share/jfr/leakprofiler/chains/edgeStore.cpp	Fri Aug 16 09:18:41 2019 +0200
+++ b/src/hotspot/share/jfr/leakprofiler/chains/edgeStore.cpp	Tue Aug 06 10:48:21 2019 +0200
@@ -233,8 +233,8 @@
   StoredEdge* const leak_context_edge = put(edge->reference());
   oop sample_object = edge->pointee();
   assert(sample_object != NULL, "invariant");
-  assert(NULL == sample_object->mark(), "invariant");
-  sample_object->set_mark(markOop(leak_context_edge));
+  assert(NULL == sample_object->mark().to_pointer(), "invariant");
+  sample_object->set_mark(markWord::from_pointer(leak_context_edge));
   return leak_context_edge;
 }