src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/HeapHprofBinWriter.java

@@ -388,13 +388,10 @@
         this.names = new HashSet<Symbol>();
     }
 
     public synchronized void write(String fileName) throws IOException {
         VM vm = VM.getVM();
-        if (vm.getUniverse().heap() instanceof ZCollectedHeap) {
-            throw new RuntimeException("This operation is not supported with ZGC.");
-        }
 
         // open file stream and create buffered data output stream
         fos = new FileOutputStream(fileName);
         out = new DataOutputStream(new BufferedOutputStream(fos));