--- a/src/hotspot/share/gc/g1/g1Allocator.cpp	Wed Aug 08 10:21:23 2018 +0800
+++ b/src/hotspot/share/gc/g1/g1Allocator.cpp	Wed Aug 08 15:31:06 2018 +0200
@@ -37,9 +37,10 @@
   _g1h(heap),
   _survivor_is_full(false),
   _old_is_full(false),
-  _retained_old_gc_alloc_region(NULL),
+  _mutator_alloc_region(),
   _survivor_gc_alloc_region(heap->alloc_buffer_stats(InCSetState::Young)),
-  _old_gc_alloc_region(heap->alloc_buffer_stats(InCSetState::Old)) {
+  _old_gc_alloc_region(heap->alloc_buffer_stats(InCSetState::Old)),
+  _retained_old_gc_alloc_region(NULL) {
 }
 
 void G1Allocator::init_mutator_alloc_region() {