src/hotspot/share/gc/g1/heapRegionType.hpp

@@ -30,10 +30,12 @@
 
 #define hrt_assert_is_valid(tag) \
   assert(is_valid((tag)), "invalid HR type: %u", (uint) (tag))
 
 class HeapRegionType VALUE_OBJ_CLASS_SPEC {
+friend class VMStructs;
+
 private:
   // We encode the value of the heap region type so the generation can be
   // determined quickly. The tag is split into two parts:
   //
   //   major type (young, old, humongous, archive)           : top N-1 bits