--- a/src/jdk.attach/linux/classes/sun/tools/attach/VirtualMachineImpl.java	Tue Mar 12 02:13:02 2019 +0100
+++ b/src/jdk.attach/linux/classes/sun/tools/attach/VirtualMachineImpl.java	Mon Mar 11 21:26:19 2019 -0400
@@ -143,7 +143,7 @@
      * Execute the given command in the target VM.
      */
     InputStream execute(String cmd, Object ... args) throws AgentLoadException, IOException {
-        assert args.length <= 4;                // includes null
+        assert args.length <= 3;                // includes null
 
         // did we detach?
         synchronized (this) {
@@ -171,7 +171,7 @@
             writeString(s, PROTOCOL_VERSION);
             writeString(s, cmd);
 
-            for (int i = 0; i < 4; i++) {
+            for (int i = 0; i < 3; i++) {
                 if (i < args.length && args[i] != null) {
                     writeString(s, (String)args[i]);
                 } else {