--- old/src/hotspot/share/prims/jvmtiEnvBase.cpp	2019-10-03 23:47:55.887242612 -0400
+++ new/src/hotspot/share/prims/jvmtiEnvBase.cpp	2019-10-03 23:47:54.774231200 -0400
@@ -659,10 +659,9 @@
     // thread is not doing an Object.wait() call
     mon = java_thread->current_pending_monitor();
     if (mon != NULL) {
-      // The thread is trying to enter() or raw_enter() an ObjectMonitor.
+      // The thread is trying to enter() an ObjectMonitor.
       obj = (oop)mon->object();
-      // If obj == NULL, then ObjectMonitor is raw which doesn't count
-      // as contended for this API
+      assert(obj != NULL, "ObjectMonitor should have a valid object!");
     }
     // implied else: no contended ObjectMonitor
   } else {