--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/epsilon/TestArraycopyCheckcast.java	Wed Jan 09 15:53:56 2019 +0100
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2019, Red Hat, Inc. 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 TestArraycopyCheckcast
+ * @key gc
+ * @requires vm.gc.Epsilon & !vm.graal.enabled
+ * @summary Epsilon is able to handle checkcasted array copies
+ * @library /test/lib
+ * @bug 8215724
+ *
+ * @run main/othervm -Xmx1g                                        -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC TestArraycopyCheckcast
+ * @run main/othervm -Xmx1g -Xint                                  -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC TestArraycopyCheckcast
+ * @run main/othervm -Xmx1g -Xbatch -Xcomp                         -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC TestArraycopyCheckcast
+ * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:TieredStopAtLevel=1 -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC TestArraycopyCheckcast
+ * @run main/othervm -Xmx1g -Xbatch -Xcomp -XX:-TieredCompilation  -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC TestArraycopyCheckcast
+ */
+
+import java.util.Random;
+
+public class TestArraycopyCheckcast {
+
+  static int COUNT = Integer.getInteger("count", 1000);
+
+  public static void main(String[] args) throws Exception {
+    Object[] src = new Object[COUNT];
+    Object[] dst = new B[COUNT];
+
+    // Test 1. Copy nulls, should succeed
+    try {
+      System.arraycopy(src, 0, dst, 0, COUNT);
+    } catch (ArrayStoreException e) {
+      throw new IllegalStateException("Should have completed");
+    }
+
+    // Test 2. Copying incompatible type, should fail
+    for (int c = 0; c < COUNT; c++) {
+      src[c] = new A();
+    }
+
+    try {
+      System.arraycopy(src, 0, dst, 0, COUNT);
+      throw new IllegalStateException("Should have failed with ArrayStoreException");
+    } catch (ArrayStoreException e) {
+      // Expected
+    }
+
+    // Test 3. Copying compatible type, should succeeded
+    for (int c = 0; c < COUNT; c++) {
+      src[c] = new C();
+    }
+
+    try {
+      System.arraycopy(src, 0, dst, 0, COUNT);
+    } catch (ArrayStoreException e) {
+      throw new IllegalStateException("Should have completed");
+    }
+
+    for (int c = 0; c < COUNT; c++) {
+      if (src[c] != dst[c]) {
+        throw new IllegalStateException("Copy failed at index " + c);
+      }
+    }
+  }
+
+  static class A {}
+  static class B extends A {}
+  static class C extends B {}
+}