--- old/src/share/vm/gc/g1/g1StringDedup.cpp	2017-02-23 11:24:32.994315149 +0100
+++ new/src/share/vm/gc/g1/g1StringDedup.cpp	2017-02-23 11:24:32.858309826 +0100
@@ -116,6 +116,12 @@
   unlink_or_oops_do(is_alive, NULL, false /* allow_resize_and_rehash */);
 }
 
+void G1StringDedup::parallel_unlink(G1StringDedupUnlinkOrOopsDoClosure* unlink, uint worker_id) {
+  assert(is_enabled(), "String deduplication not enabled");
+  G1StringDedupQueue::unlink_or_oops_do(unlink);
+  G1StringDedupTable::unlink_or_oops_do(unlink, worker_id);
+}
+
 //
 // Task for parallel unlink_or_oops_do() operation on the deduplication queue
 // and table.