--- old/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java	2015-04-15 11:45:33.893385693 +0200
+++ new/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java	2015-04-15 11:45:33.758383075 +0200
@@ -328,7 +328,7 @@
   }
 
   public Symbol getUnresolvedStringAt(int which) {
-    return getSymbolAt(which);
+    return getSlotAt(which).getSymbol();
   }
 
   // returns null, if not resolved.