src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZCollectedHeap.java

*** 32,41 ****
--- 32,42 ----
  import sun.jvm.hotspot.gc.shared.CollectedHeapName;
  import sun.jvm.hotspot.runtime.VM;
  import sun.jvm.hotspot.runtime.VMObjectFactory;
  import sun.jvm.hotspot.types.Type;
  import sun.jvm.hotspot.types.TypeDataBase;
+ import sun.jvm.hotspot.utilities.BitMapInterface;
  
  // Mirror class for ZCollectedHeap.
  
  public class ZCollectedHeap extends CollectedHeap {
  
*** 115,120 ****
--- 116,127 ----
              return origOop + " (" + loadBarrieredOop.toString() + ")";
          } else {
              return handle.toString();
          }
      }
+ 
+     @Override
+     public BitMapInterface createBitMap(long size) {
+         // Ignores the size
+         return new ZExternalBitMap(this);
+     }
  }