--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-29 12:36:31.492733252 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-29 12:36:31.244723398 +0100
@@ -526,6 +526,9 @@
   void verify_after_full_collection();
   void print_heap_after_full_collection(G1HeapTransition* heap_transition);
 
+  // Verification type helper.
+  G1HeapVerifier::G1VerifyType young_verification_type();
+
   // Helper method for satisfy_failed_allocation()
   HeapWord* satisfy_failed_allocation_helper(size_t word_size,
                                              AllocationContext_t context,