--- old/src/hotspot/share/gc/serial/defNewGeneration.cpp	2020-08-25 10:03:51.548467656 +0200
+++ new/src/hotspot/share/gc/serial/defNewGeneration.cpp	2020-08-25 10:03:51.400465162 +0200
@@ -424,10 +424,6 @@
       }
 }
 
-void DefNewGeneration::younger_refs_iterate(OopsInGenClosure* cl, uint n_threads) {
-  assert(false, "NYI -- are you sure you want to call this?");
-}
-
 
 size_t DefNewGeneration::capacity() const {
   return eden()->capacity()