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* 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
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* 2 along with this work; if not, write to the Free Software Foundation,
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/* @test
@bug 6945316
@summary The Win32ShellFolderManager2.isFileSystemRoot can throw NPE
@author Pavel Porvatov
@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();
}
}
}