--- old/src/hotspot/share/jfr/leakprofiler/chains/objectSampleMarker.hpp	2019-08-13 12:39:49.828222107 +0200
+++ new/src/hotspot/share/jfr/leakprofiler/chains/objectSampleMarker.hpp	2019-08-13 12:39:49.520216765 +0200
@@ -45,7 +45,7 @@
                          const markWord mark_word) : _obj(obj),
                                                      _mark_word(mark_word) {}
    public:
-    ObjectSampleMarkWord() : _obj(NULL), _mark_word(0) {}
+    ObjectSampleMarkWord() : _obj(NULL), _mark_word(markWord::zero) {}
   };
 
   GrowableArray<ObjectSampleMarkWord>* _store;
@@ -72,9 +72,9 @@
     // This is an "impossible" state during a safepoint,
     // hence we will use it to quickly identify sample objects
     // during the reachability search from gc roots.
-    assert(0 == markWord::INFLATING().value(), "invariant");
+    assert(NULL == markWord::INFLATING().to_pointer(), "invariant");
     obj->set_mark(markWord::INFLATING());
-    assert(0 == obj->mark().value(), "invariant");
+    assert(NULL == obj->mark().to_pointer(), "invariant");
   }
 };