--- old/src/hotspot/share/gc/z/zLiveMap.hpp	2019-05-02 09:57:46.326943901 +0200
+++ new/src/hotspot/share/gc/z/zLiveMap.hpp	2019-05-02 09:57:46.081935809 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -35,13 +35,13 @@
 private:
   static const size_t nsegments = 64;
 
-  volatile uint32_t _seqnum;              // Mark sequence number
-  volatile uint32_t _live_objects;        // Number of live objects
-  volatile size_t   _live_bytes;          // Number of live bytes
-  BitMap::bm_word_t _segment_live_bits;   // Segment live bits
-  BitMap::bm_word_t _segment_claim_bits;  // Segment claim bits
-  ZBitMap           _bitmap;              // Mark bitmap
-  const size_t      _shift;               // Segment shift
+  volatile uint32_t _seqnum;
+  volatile uint32_t _live_objects;
+  volatile size_t   _live_bytes;
+  BitMap::bm_word_t _segment_live_bits;
+  BitMap::bm_word_t _segment_claim_bits;
+  ZBitMap           _bitmap;
+  size_t            _segment_shift;
 
   const BitMapView segment_live_bits() const;
   const BitMapView segment_claim_bits() const;
@@ -72,6 +72,7 @@
   ZLiveMap(uint32_t size);
 
   void reset();
+  void resize(uint32_t size);
 
   bool is_marked() const;