--- old/src/share/vm/memory/defNewGeneration.cpp	2015-05-13 14:05:33.893132384 +0200
+++ new/src/share/vm/memory/defNewGeneration.cpp	2015-05-13 14:05:33.773128395 +0200
@@ -455,7 +455,7 @@
   }
 }
 
-void DefNewGeneration::younger_refs_iterate(OopsInGenClosure* cl) {
+void DefNewGeneration::younger_refs_iterate(OopsInGenClosure* cl, uint n_threads) {
   assert(false, "NYI -- are you sure you want to call this?");
 }