--- a/hotspot/src/share/vm/memory/generation.hpp	Thu Jan 23 14:47:23 2014 +0100
+++ b/hotspot/src/share/vm/memory/generation.hpp	Mon Jan 27 13:14:53 2014 +0100
@@ -299,6 +299,10 @@
     guarantee(false, "Generation doesn't support thread local allocation buffers");
     return 0;
   }
+  virtual size_t tlab_used() const {
+    guarantee(false, "Generation doesn't support thread local allocation buffers");
+    return 0;
+  }
   virtual size_t unsafe_max_tlab_alloc() const {
     guarantee(false, "Generation doesn't support thread local allocation buffers");
     return 0;