--- /dev/null	Thu Feb 23 14:40:20 2012
+++ new/test/java/util/Collections/EqualsTest.java	Thu Feb 23 14:40:18 2012
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2012, 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
+ * @bug 7144488
+ * @summary Infinite recursion for some equals tests in Collections
+ */
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+public class EqualsTest {
+    public static void main(String[] args) {
+        boolean test;
+
+        /* synchronizedList test */
+        List list = Collections.synchronizedList(new ArrayList());
+        list.add(list);
+        test = list.equals(list);
+        assertTrue(test);
+        list.remove(list);
+
+        /* synchronizedSet test */
+        Set s = Collections.synchronizedSet(new HashSet());
+        s.add(s);
+        test = s.equals(s);
+        assertTrue(test);
+
+        /* synchronizedMap test */
+        Map m =  Collections.synchronizedMap(new HashMap());
+        test = m.equals(m);
+        assertTrue(test);
+
+    }
+
+    private static void assertTrue(boolean b) {
+        if (!b)
+            throw new RuntimeException("assertion failed");
+    }
+}
+