| /* |
| * Copyright (c) 2010, 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 |
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| */ |
| |
| /* @test |
| @bug 6945316 |
| @summary The Win32ShellFolderManager2.isFileSystemRoot can throw NPE |
| @author Pavel Porvatov |
| @modules java.desktop/sun.awt |
| java.desktop/sun.awt.shell |
| @run main bug6945316 |
| */ |
| |
| import sun.awt.OSInfo; |
| import sun.awt.shell.ShellFolder; |
| |
| import java.awt.*; |
| import java.io.File; |
| import java.util.concurrent.CountDownLatch; |
| |
| public class bug6945316 { |
| public static void main(String[] args) throws Exception { |
| if (OSInfo.getOSType() != OSInfo.OSType.WINDOWS) { |
| System.out.println("The test is suitable only for Windows OS. Skipped."); |
| |
| return; |
| } |
| |
| // Init toolkit because it shouldn't be interrupted while initialization |
| Toolkit.getDefaultToolkit(); |
| |
| // Init the sun.awt.shell.Win32ShellFolderManager2.drives field |
| ShellFolder.get("fileChooserComboBoxFolders"); |
| |
| // To get NPE the path must obey the following rules: |
| // path.length() == 3 && path.charAt(1) == ':' |
| final File tempFile = new File("c:\\"); |
| |
| for (int i = 0; i < 10000; i++) { |
| final CountDownLatch countDownLatch = new CountDownLatch(1); |
| |
| final Thread thread = new Thread() { |
| public void run() { |
| countDownLatch.countDown(); |
| |
| ShellFolder.isFileSystemRoot(tempFile); |
| } |
| }; |
| |
| thread.start(); |
| |
| countDownLatch.await(); |
| |
| thread.interrupt(); |
| } |
| } |
| } |