--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/EnumMap/EntrySetIteratorRemoveInvalidatesEntry.java	Wed Apr 06 09:31:13 2011 -0700
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2011 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.
+ */
+
+/*
+ * Portions Copyright (c) 2011 IBM Corporation
+ */
+
+/*
+ * @test
+ * @bug 6312706
+ * @summary Iterator.remove() from Map.entrySet().iterator() invalidates returned Entry.
+ * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com>
+ */
+
+import java.util.EnumMap;
+import java.util.Iterator;
+import java.util.Map;
+
+public class EntrySetIteratorRemoveInvalidatesEntry {
+    static enum TestEnum { e00, e01, e02 }
+
+    public static void main(String[] args) throws Exception {
+        final EnumMap<TestEnum, String> enumMap = new EnumMap<>(TestEnum.class);
+
+        for (TestEnum e : TestEnum.values()) {
+            enumMap.put(e, e.name());
+        }
+
+        Iterator<Map.Entry<TestEnum, String>> entrySetIterator =
+            enumMap.entrySet().iterator();
+        Map.Entry<TestEnum, String> entry = entrySetIterator.next();
+
+        entrySetIterator.remove();
+
+        try {
+            entry.getKey();
+            throw new RuntimeException("Test FAILED: Entry not invalidated by removal.");
+        } catch (Exception e) { }
+    }
+}