--- old/src/share/vm/utilities/growableArray.hpp	2009-12-01 18:28:28.906485534 +0100
+++ new/src/share/vm/utilities/growableArray.hpp	2009-12-01 18:28:28.748236834 +0100
@@ -182,6 +182,17 @@
     if (!contains(elem)) append(elem);
   }
 
+  // inserts the given element before the element at index i
+  void insert_before(const int idx, const E& elem) {
+    check_nesting();
+    if (_len == _max) grow(_len);
+    for (int j = _len - 1; j >= idx; j--) {
+      _data[j + 1] = _data[j];
+    }
+    _len++;
+    _data[idx] = elem;
+  }
+
   E at(int i) const {
     assert(0 <= i && i < _len, "illegal index");
     return _data[i];