--- /dev/null	2018-04-03 12:55:20.301839954 +0200
+++ new/src/hotspot/share/gc/z/zRelocationSet.cpp	2018-06-08 19:46:36.564430810 +0200
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2017, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "precompiled.hpp"
+#include "gc/z/zRelocationSet.hpp"
+#include "memory/allocation.inline.hpp"
+
+ZRelocationSet::ZRelocationSet() :
+    _pages(NULL),
+    _npages(0) {}
+
+void ZRelocationSet::populate(const ZPage* const* group0, size_t ngroup0,
+                              const ZPage* const* group1, size_t ngroup1) {
+  _npages = ngroup0 + ngroup1;
+  _pages = REALLOC_C_HEAP_ARRAY(ZPage*, _pages, _npages, mtGC);
+
+  if (_pages != NULL) {
+    if (group0 != NULL) {
+      memcpy(_pages, group0, ngroup0 * sizeof(ZPage*));
+    }
+    if (group1 != NULL) {
+      memcpy(_pages + ngroup0, group1, ngroup1 * sizeof(ZPage*));
+    }
+  }
+}