--- old/src/share/vm/utilities/growableArray.hpp	2017-07-04 18:39:48.224147526 +0200
+++ new/src/share/vm/utilities/growableArray.hpp	2017-07-04 18:39:48.150147867 +0200
@@ -27,6 +27,7 @@
 
 #include "memory/allocation.hpp"
 #include "memory/allocation.inline.hpp"
+#include "oops/array.hpp"
 #include "utilities/debug.hpp"
 #include "utilities/globalDefinitions.hpp"
 
@@ -390,6 +391,12 @@
     }
   }
 
+  void appendAll(const Array<E>* l) {
+    for (int i = 0; i < l->length(); i++) {
+      raw_at_put_grow(_len, l->at(i), E());
+    }
+  }
+
   void sort(int f(E*,E*)) {
     qsort(_data, length(), sizeof(E), (_sort_Fn)f);
   }