--- old/src/hotspot/share/gc/g1/heapRegionType.hpp	2018-11-19 17:21:39.065690600 -0800
+++ new/src/hotspot/share/gc/g1/heapRegionType.hpp	2018-11-19 17:21:38.110132800 -0800
@@ -77,6 +77,7 @@
     PreMatureOldMask      = OldMask + 1,
     OldTag                = OldMask,
     PreMatureOldTag       = PreMatureOldMask,
+
     // Archive regions are regions with immutable content (i.e. not reclaimed, and
     // not allocated into during regular operation). They differ in the kind of references
     // allowed for the contained objects: