1 files changed, 95 insertions, 0 deletions
diff --git a/test/script/basic/JDK-8134609.js b/test/script/basic/JDK-8134609.js
new file mode 100644
index 00000000..ac4c4f97
--- /dev/null
+++ b/test/script/basic/JDK-8134609.js
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2015, 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.
+ */
+
+/**
+ * JDK-8134609: Allow constructors with same prototoype map to share the allocator map
+ *
+ * @test
+ * @run
+ * @fork
+ * @option -Dnashorn.debug
+ */
+
+function createProto(members) {
+    function P() {
+        for (var id in members) {
+            if (members.hasOwnProperty(id)) {
+                this[id] = members[id];
+            }
+        }
+        return this;
+    }
+    return new P();
+}
+
+function createSubclass(prototype, members) {
+    function C() {
+        for (var id in members) {
+            if (members.hasOwnProperty(id)) {
+                this[id] = members[id];
+            }
+        }
+        return this;
+    }
+
+    C.prototype = prototype;
+
+    return new C();
+}
+
+function assertP1(object, value) {
+    Assert.assertTrue(object.p1 === value);
+}
+
+// First prototype will have non-shared proto-map. Second and third will be shared.
+var proto0 = createProto({p1: 0, p2: 1});
+var proto1 = createProto({p1: 1, p2: 2});
+var proto2 = createProto({p1: 2, p2: 3});
+
+Assert.assertTrue(Debug.map(proto1) === Debug.map(proto2));
+
+assertP1(proto1, 1);
+assertP1(proto2, 2);
+
+// First instantiation will have a non-shared prototype map, from the second one
+// maps will be shared until a different proto map comes along.
+var child0 = createSubclass(proto1, {c1: 1, c2: 2});
+var child1 = createSubclass(proto2, {c1: 2, c2: 3});
+var child2 = createSubclass(proto1, {c1: 3, c2: 4});
+var child3 = createSubclass(proto2, {c1: 1, c2: 2});
+var child4 = createSubclass(proto0, {c1: 3, c2: 2});
+
+Assert.assertTrue(Debug.map(child1) === Debug.map(child2));
+Assert.assertTrue(Debug.map(child1) === Debug.map(child3));
+Assert.assertTrue(Debug.map(child3) !== Debug.map(child4));
+
+assertP1(child1, 2);
+assertP1(child2, 1);
+assertP1(child3, 2);
+assertP1(child4, 0);
+
+Assert.assertTrue(delete proto2.p1);
+
+assertP1(child3, undefined);
+assertP1(child2, 1);
+Assert.assertTrue(Debug.map(child1) !== Debug.map(child3));