--- a/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.cpp	Wed Aug 08 10:21:23 2018 +0800
+++ b/src/hotspot/share/gc/g1/g1RegionToSpaceMapper.cpp	Wed Aug 08 15:31:06 2018 +0200
@@ -37,9 +37,9 @@
                                              size_t region_granularity,
                                              size_t commit_factor,
                                              MemoryType type) :
+  _listener(NULL),
   _storage(rs, used_size, page_size),
   _region_granularity(region_granularity),
-  _listener(NULL),
   _commit_map(rs.size() * commit_factor / region_granularity, mtGC) {
   guarantee(is_power_of_2(page_size), "must be");
   guarantee(is_power_of_2(region_granularity), "must be");