src/hotspot/share/gc/g1/g1OopClosures.inline.hpp

rev 52316 : imported patch 8212911-unify-reference-handling-during-gc
rev 52317 : imported patch 8212911-stefanj-review
rev 52318 : imported patch 8212911-kbarrett-review
rev 52319 : imported patch 8213142-use-raii-to-set-scanning-from-young

@@ -82,11 +82,12 @@
   const InCSetState state = _g1h->in_cset_state(obj);
   if (state.is_in_cset()) {
     prefetch_and_push(p, obj);
   } else if (!HeapRegion::is_in_same_region(p, obj)) {
     handle_non_cset_obj_common(state, p, obj);
-    if (_scanning_in_young) {
+    assert(_scanning_in_young != Uninitialized, "Scan location has not been initialized.");
+    if (_scanning_in_young == True) {
       return;
     }
     _par_scan_state->enqueue_card_if_tracked(p, obj);
   }
 }