--- old/src/share/vm/utilities/growableArray.hpp	Thu Feb 23 12:08:48 2012
+++ new/src/share/vm/utilities/growableArray.hpp	Thu Feb 23 12:08:47 2012
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -298,6 +298,14 @@
     _len--;
   }
 
+  void delete_at(int index) {
+    assert(0 <= index && index < _len, "illegal index");
+    if (index < --_len) {
+      // Replace removed element with last one.
+      _data[index] = _data[_len];
+    }
+  }
+
   // inserts the given element before the element at index i
   void insert_before(const int idx, const E& elem) {
     check_nesting();