--- old/src/hotspot/share/gc/z/zRootsIterator.cpp	2018-11-14 07:09:57.480153991 -0500
+++ new/src/hotspot/share/gc/z/zRootsIterator.cpp	2018-11-14 07:09:57.204154001 -0500
@@ -243,7 +243,7 @@
 void ZConcurrentRootsIterator::do_class_loader_data_graph(ZRootsIteratorClosure* cl) {
   ZStatTimer timer(ZSubPhaseConcurrentRootsClassLoaderDataGraph);
   CLDToOopClosure cld_cl(cl, _marking ? ClassLoaderData::_claim_strong : ClassLoaderData::_claim_none);
-  ClassLoaderDataGraph::cld_do(&cld_cl);
+  ClassLoaderDataGraph::cld_oops_do(&cld_cl);
 }
 
 void ZConcurrentRootsIterator::oops_do(ZRootsIteratorClosure* cl) {