--- old/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	2019-03-13 09:15:53.932257653 +0100
+++ new/src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp	2019-03-13 09:15:53.352248047 +0100
@@ -151,16 +151,13 @@
 
 }
 
-namespace {
-  class PSIsScavengable : public BoolObjectClosure {
-    bool do_object_b(oop obj) {
-      return ParallelScavengeHeap::heap()->is_in_young(obj);
-    }
-  };
-
-  PSIsScavengable _is_scavengable;
-}
+class PSIsScavengable : public BoolObjectClosure {
+  bool do_object_b(oop obj) {
+    return ParallelScavengeHeap::heap()->is_in_young(obj);
+  }
+};
 
+static PSIsScavengable _is_scavengable;
 
 void ParallelScavengeHeap::post_initialize() {
   CollectedHeap::post_initialize();