diff -r bd0a95bec96b -r 9042ffe5b7fe src/hotspot/share/oops/arrayKlass.hpp
--- a/src/hotspot/share/oops/arrayKlass.hpp	Fri May 04 09:29:14 2018 +0200
+++ b/src/hotspot/share/oops/arrayKlass.hpp	Fri May 04 11:41:35 2018 +0200
@@ -152,11 +152,11 @@
 #define OOP_OOP_ITERATE_DECL_RANGE(OopClosureType, nv_suffix)                                   \
   void oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* closure, int start, int end);
 
-#if INCLUDE_ALL_GCS
+#if INCLUDE_OOP_OOP_ITERATE_BACKWARDS
 // Named NO_BACKWARDS because the definition used by *ArrayKlass isn't reversed, see below.
 #define OOP_OOP_ITERATE_DECL_NO_BACKWARDS(OopClosureType, nv_suffix)            \
   void oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure);
-#endif // INCLUDE_ALL_GCS
+#endif
 
 
 // Array oop iteration macros for definitions.
@@ -168,7 +168,7 @@
   oop_oop_iterate_range<nvs_to_bool(nv_suffix)>(obj, closure, start, end);                                \
 }
 
-#if INCLUDE_ALL_GCS
+#if INCLUDE_OOP_OOP_ITERATE_BACKWARDS
 #define OOP_OOP_ITERATE_DEFN_NO_BACKWARDS(KlassType, OopClosureType, nv_suffix)           \
 void KlassType::oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) {  \
   /* No reverse implementation ATM. */                                                    \