--- old/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2018-04-23 13:45:38.732708784 +0200
+++ new/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2018-04-23 13:45:38.364694267 +0200
@@ -297,7 +297,9 @@
   virtual size_t tlab_capacity(Thread* thr) const;
   virtual size_t tlab_used(Thread* thr) const;
   virtual size_t unsafe_max_tlab_alloc(Thread* thr) const;
-  virtual HeapWord* allocate_new_tlab(size_t size);
+  virtual HeapWord* allocate_new_tlab(size_t min_word_size,
+                                      size_t desired_word_size,
+                                      size_t* actual_word_size);
 
   // The "requestor" generation is performing some garbage collection
   // action for which it would be useful to have scratch space.  The