--- a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Thu Sep 19 20:26:52 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Thu Sep 19 20:26:53 2019 +0200
@@ -223,6 +223,7 @@
    CLDToOopClosure clds(oops, ClassLoaderData::_claim_none);
    MarkingCodeBlobClosure code(oops, !CodeBlobToOopClosure::FixRelocations);
    ShenandoahParallelOopsDoThreadClosure tc_cl(oops, &code, NULL);
+   AlwaysTrueClosure always_true;
    ResourceMark rm;
 
    _serial_roots.oops_do(oops, 0);
@@ -230,6 +231,10 @@
    _cld_roots.cld_do(&clds, 0);
    _thread_roots.threads_do(&tc_cl, 0);
    _code_roots.code_blobs_do(&code, 0);
+
+   _serial_weak_roots.weak_oops_do(oops, 0);
+   _weak_roots.oops_do<OopClosure>(oops, 0);
+   _dedup_roots.oops_do(&always_true, oops, 0);
  }
 
  void ShenandoahHeapIterationRootScanner::strong_roots_do(OopClosure* oops) {