--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/NASHORN-378.js	Fri Dec 21 16:36:24 2012 -0400
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2010, 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.
+ */
+
+/**
+ * NASHORN-378 : Redefining a configurable accessor property to be a data property on a non-extensible object fails with NPE
+ *
+ * @test
+ * @run
+ */
+
+var obj = {};
+Object.defineProperty(obj, "foo", 
+    { get: function() { return 42; },
+      configurable: true});
+
+if (obj.foo !== 42) {
+    fail("#0 obj.foo !== 42");
+}
+
+Object.preventExtensions(obj);
+Object.defineProperty(obj, "foo", { value: "hello"});
+
+var desc = Object.getOwnPropertyDescriptor(obj, "foo");
+
+if (obj.foo !== "hello") {
+    fail("#1 obj.foo !== 'hello'");
+}
+
+if (desc.get !== undefined) {
+    fail("#2 getter found on a date property");
+}
+
+if (desc.set !== undefined) {
+    fail("#3 setter found on a date property");
+}
+
+if (desc.value !== 'hello') {
+    fail("#4 value property is wrong");
+}