# HG changeset patch
# User mhaupt
# Date 1455008402 -3600
# Node ID 29603fdf59a857fbe179fdf59b7b6e29a8d1587e
# Parent  1e1f65348706b3bf6cb64191ab840985faf49981
8149334: JSON.parse(JSON.stringify([])).push(10) creates an array containing two elements
Reviewed-by: jlaskey, sundar

diff -r 1e1f65348706 -r 29603fdf59a8 src/jdk/nashorn/internal/runtime/arrays/ArrayData.java
--- a/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java	Fri Feb 05 13:54:03 2016 +0000
+++ b/src/jdk/nashorn/internal/runtime/arrays/ArrayData.java	Tue Feb 09 10:00:02 2016 +0100
@@ -81,14 +81,11 @@
         }
 
         private ArrayData toRealArrayData() {
-            return toRealArrayData(0);
+            return new IntArrayData(0);
         }
 
         private ArrayData toRealArrayData(final int index) {
             final IntArrayData newData = new IntArrayData(index + 1);
-            if (index == 0) {
-                return newData;
-            }
             return new DeletedRangeArrayFilter(newData, 0, index);
         }
 
@@ -122,7 +119,7 @@
 
         @Override
         public ArrayData convert(final Class<?> type) {
-            return toRealArrayData(0).convert(type);
+            return toRealArrayData().convert(type);
         }
 
         @Override
diff -r 1e1f65348706 -r 29603fdf59a8 test/script/nosecurity/JDK-8149334.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/nosecurity/JDK-8149334.js	Tue Feb 09 10:00:02 2016 +0100
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2016, 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-8149334: JSON.parse(JSON.stringify([])).push(10) creates an array containing two elements
+ *
+ * @test
+ * @run
+ */
+
+var a = JSON.parse(JSON.stringify([]))
+print(a.length)
+a.push(10)
+print(a.length)
+print(a)
+
+var b = JSON.parse(JSON.stringify([]))
+print(b.length)
+b.push('ieps')
+print(b.length)
+print(b)
diff -r 1e1f65348706 -r 29603fdf59a8 test/script/nosecurity/JDK-8149334.js.EXPECTED
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/script/nosecurity/JDK-8149334.js.EXPECTED	Tue Feb 09 10:00:02 2016 +0100
@@ -0,0 +1,6 @@
+0
+1
+10
+0
+1
+ieps