--- a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	Fri Aug 16 09:18:41 2019 +0200
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	Tue Aug 06 10:48:21 2019 +0200
@@ -813,7 +813,7 @@
 
   // Preserve the mark of "obj", if necessary, in preparation for its mark
   // word being overwritten with a self-forwarding-pointer.
-  void preserve_mark_during_evac_failure(uint worker_id, oop obj, markOop m);
+  void preserve_mark_during_evac_failure(uint worker_id, oop obj, markWord m);
 
 #ifndef PRODUCT
   // Support for forcing evacuation failures. Analogous to