diff -r 000000000000 -r f90c822e73f8 test/gc/g1/TestRegionAlignment.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/gc/g1/TestRegionAlignment.java	Wed Apr 27 01:25:04 2016 +0800
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test TestRegionAlignment.java
+ * @bug 8013791
+ * @summary Make sure that G1 ergonomics pick a heap size that is aligned with the region size
+ * @run main/othervm -XX:+UseG1GC -XX:G1HeapRegionSize=32m -XX:MaxRAM=555m TestRegionAlignment
+ *
+ * When G1 ergonomically picks a maximum heap size it must be aligned to the region size.
+ * This test tries to get the VM to pick a small and unaligned heap size (by using MaxRAM=555) and a
+ * large region size (by using -XX:G1HeapRegionSize=32m). This will fail without the fix for 8013791.
+ */
+public class TestRegionAlignment {
+    public static void main(String[] args) { }
+}