# HG changeset patch # User anthony # Date 1207057126 -14400 # Node ID ff3aa6ee3572839490e013eea89a9688b9a1e3f8 # Parent 6aea7c26a8dc67cdd88a63d3dec2bd47f49b977f 6681889: JSN security test headline/noWarningApp failed with NPE exception Summary: The java.awt.Component.changeSupportLock field should be initialized in the readObject() method. Reviewed-by: son, art diff -r 6aea7c26a8dc -r ff3aa6ee3572 jdk/src/share/classes/java/awt/Component.java --- a/jdk/src/share/classes/java/awt/Component.java Mon Mar 31 15:56:12 2008 +0400 +++ b/jdk/src/share/classes/java/awt/Component.java Tue Apr 01 17:38:46 2008 +0400 @@ -634,7 +634,9 @@ */ private PropertyChangeSupport changeSupport; - private transient final Object changeSupportLock = new Object(); + // Note: this field is considered final, though readObject() prohibits + // initializing final fields. + private transient Object changeSupportLock = new Object(); private Object getChangeSupportLock() { return changeSupportLock; } @@ -8310,6 +8312,8 @@ private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException { + changeSupportLock = new Object(); + s.defaultReadObject(); appContext = AppContext.getAppContext(); diff -r 6aea7c26a8dc -r ff3aa6ee3572 jdk/test/java/awt/Window/PropertyChangeListenerLockSerialization/PropertyChangeListenerLockSerialization.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jdk/test/java/awt/Window/PropertyChangeListenerLockSerialization/PropertyChangeListenerLockSerialization.java Tue Apr 01 17:38:46 2008 +0400 @@ -0,0 +1,402 @@ +/* + * Copyright 2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +/* + @test + @bug 6681889 + @summary Showing a deserialized frame should not throw NPE + @author anthony.petrov@...: area=awt.toplevel + @run main PropertyChangeListenerLockSerialization +*/ + + +/** + * PropertyChangeListenerLockSerialization.java + * + * summary: Showing a deserialized frame should not throw NPE + */ + +import java.awt.*; +import java.awt.event.*; +import java.io.*; +import java.net.*; + +public class PropertyChangeListenerLockSerialization +{ + + private static void init() + { + //*** Create instructions for the user here *** + + String[] instructions = + { + "This is an AUTOMATIC test, simply wait until it is done.", + "The result (passed or failed) will be shown in the", + "message window below." + }; + Sysout.createDialog( ); + Sysout.printInstructions( instructions ); + + File file = + new File(System.getProperty("test.classes", "."), "frame.ser"); + + Frame f = new Frame("Frame"); + f.setBounds(250, 50, 300, 300); + try { + OutputStream o = new FileOutputStream(file); + ObjectOutputStream oo = new ObjectOutputStream(o); + + oo.writeObject(f); + oo.close(); + } catch (IOException ex) { + ex.printStackTrace(); + fail("Unable to serialize the frame: " + ex); + } + + // Cleanup the frame + f.dispose(); + f = null; + + try { + ObjectInputStream i = new ObjectInputStream(new FileInputStream(file)); + + f = (Frame)i.readObject(); + f.show(); + } catch (NullPointerException ex) { + ex.printStackTrace(); + fail("The NullPointerException has been thrown: " + ex); + } catch (Exception ex) { + ex.printStackTrace(); + fail("Error while deserializing the frame: " + ex); + } + + // Cleanup the frame + f.dispose(); + f = null; + + pass(); + + }//End init() + + + + /***************************************************** + * Standard Test Machinery Section + * DO NOT modify anything in this section -- it's a + * standard chunk of code which has all of the + * synchronisation necessary for the test harness. + * By keeping it the same in all tests, it is easier + * to read and understand someone else's test, as + * well as insuring that all tests behave correctly + * with the test harness. + * There is a section following this for test- + * classes + ******************************************************/ + private static boolean theTestPassed = false; + private static boolean testGeneratedInterrupt = false; + private static String failureMessage = ""; + + private static Thread mainThread = null; + + private static int sleepTime = 300000; + + // Not sure about what happens if multiple of this test are + // instantiated in the same VM. Being static (and using + // static vars), it aint gonna work. Not worrying about + // it for now. + public static void main( String args[] ) throws InterruptedException + { + mainThread = Thread.currentThread(); + try + { + init(); + } + catch( TestPassedException e ) + { + //The test passed, so just return from main and harness will + // interepret this return as a pass + return; + } + //At this point, neither test pass nor test fail has been + // called -- either would have thrown an exception and ended the + // test, so we know we have multiple threads. + + //Test involves other threads, so sleep and wait for them to + // called pass() or fail() + try + { + Thread.sleep( sleepTime ); + //Timed out, so fail the test + throw new RuntimeException( "Timed out after " + sleepTime/1000 + " seconds" ); + } + catch (InterruptedException e) + { + //The test harness may have interrupted the test. If so, rethrow the exception + // so that the harness gets it and deals with it. + if( ! testGeneratedInterrupt ) throw e; + + //reset flag in case hit this code more than once for some reason (just safety) + testGeneratedInterrupt = false; + + if ( theTestPassed == false ) + { + throw new RuntimeException( failureMessage ); + } + } + + }//main + + public static synchronized void setTimeoutTo( int seconds ) + { + sleepTime = seconds * 1000; + } + + public static synchronized void pass() + { + Sysout.println( "The test passed." ); + Sysout.println( "The test is over, hit Ctl-C to stop Java VM" ); + //first check if this is executing in main thread + if ( mainThread == Thread.currentThread() ) + { + //Still in the main thread, so set the flag just for kicks, + // and throw a test passed exception which will be caught + // and end the test. + theTestPassed = true; + throw new TestPassedException(); + } + theTestPassed = true; + testGeneratedInterrupt = true; + mainThread.interrupt(); + }//pass() + + public static synchronized void fail() + { + //test writer didn't specify why test failed, so give generic + fail( "it just plain failed! :-)" ); + } + + public static synchronized void fail( String whyFailed ) + { + Sysout.println( "The test failed: " + whyFailed ); + Sysout.println( "The test is over, hit Ctl-C to stop Java VM" ); + //check if this called from main thread + if ( mainThread == Thread.currentThread() ) + { + //If main thread, fail now 'cause not sleeping + throw new RuntimeException( whyFailed ); + } + theTestPassed = false; + testGeneratedInterrupt = true; + failureMessage = whyFailed; + mainThread.interrupt(); + }//fail() + +}// class PropertyChangeListenerLockSerialization + +//This exception is used to exit from any level of call nesting +// when it's determined that the test has passed, and immediately +// end the test. +class TestPassedException extends RuntimeException +{ +} + +//*********** End Standard Test Machinery Section ********** + + +//************ Begin classes defined for the test **************** + +// if want to make listeners, here is the recommended place for them, then instantiate +// them in init() + +/* Example of a class which may be written as part of a test +class NewClass implements anInterface + { + static int newVar = 0; + + public void eventDispatched(AWTEvent e) + { + //Counting events to see if we get enough + eventCount++; + + if( eventCount == 20 ) + { + //got enough events, so pass + + PropertyChangeListenerLockSerialization.pass(); + } + else if( tries == 20 ) + { + //tried too many times without getting enough events so fail + + PropertyChangeListenerLockSerialization.fail(); + } + + }// eventDispatched() + + }// NewClass class + +*/ + + +//************** End classes defined for the test ******************* + + + + +/**************************************************** + Standard Test Machinery + DO NOT modify anything below -- it's a standard + chunk of code whose purpose is to make user + interaction uniform, and thereby make it simpler + to read and understand someone else's test. + ****************************************************/ + +/** + This is part of the standard test machinery. + It creates a dialog (with the instructions), and is the interface + for sending text messages to the user. + To print the instructions, send an array of strings to Sysout.createDialog + WithInstructions method. Put one line of instructions per array entry. + To display a message for the tester to see, simply call Sysout.println + with the string to be displayed. + This mimics System.out.println but works within the test harness as well + as standalone. + */ + +class Sysout +{ + private static TestDialog dialog; + + public static void createDialogWithInstructions( String[] instructions ) + { + dialog = new TestDialog( new Frame(), "Instructions" ); + dialog.printInstructions( instructions ); + dialog.setVisible(true); + println( "Any messages for the tester will display here." ); + } + + public static void createDialog( ) + { + dialog = new TestDialog( new Frame(), "Instructions" ); + String[] defInstr = { "Instructions will appear here. ", "" } ; + dialog.printInstructions( defInstr ); + dialog.setVisible(true); + println( "Any messages for the tester will display here." ); + } + + + public static void printInstructions( String[] instructions ) + { + dialog.printInstructions( instructions ); + } + + + public static void println( String messageIn ) + { + dialog.displayMessage( messageIn ); + System.out.println(messageIn); + } + +}// Sysout class + +/** + This is part of the standard test machinery. It provides a place for the + test instructions to be displayed, and a place for interactive messages + to the user to be displayed. + To have the test instructions displayed, see Sysout. + To have a message to the user be displayed, see Sysout. + Do not call anything in this dialog directly. + */ +class TestDialog extends Dialog +{ + + TextArea instructionsText; + TextArea messageText; + int maxStringLength = 80; + + //DO NOT call this directly, go through Sysout + public TestDialog( Frame frame, String name ) + { + super( frame, name ); + int scrollBoth = TextArea.SCROLLBARS_BOTH; + instructionsText = new TextArea( "", 15, maxStringLength, scrollBoth ); + add( "North", instructionsText ); + + messageText = new TextArea( "", 5, maxStringLength, scrollBoth ); + add("Center", messageText); + + pack(); + + setVisible(true); + }// TestDialog() + + //DO NOT call this directly, go through Sysout + public void printInstructions( String[] instructions ) + { + //Clear out any current instructions + instructionsText.setText( "" ); + + //Go down array of instruction strings + + String printStr, remainingStr; + for( int i=0; i < instructions.length; i++ ) + { + //chop up each into pieces maxSringLength long + remainingStr = instructions[ i ]; + while( remainingStr.length() > 0 ) + { + //if longer than max then chop off first max chars to print + if( remainingStr.length() >= maxStringLength ) + { + //Try to chop on a word boundary + int posOfSpace = remainingStr. + lastIndexOf( ' ', maxStringLength - 1 ); + + if( posOfSpace <= 0 ) posOfSpace = maxStringLength - 1; + + printStr = remainingStr.substring( 0, posOfSpace + 1 ); + remainingStr = remainingStr.substring( posOfSpace + 1 ); + } + //else just print + else + { + printStr = remainingStr; + remainingStr = ""; + } + + instructionsText.append( printStr + "\n" ); + + }// while + + }// for + + }//printInstructions() + + //DO NOT call this directly, go through Sysout + public void displayMessage( String messageIn ) + { + messageText.append( messageIn + "\n" ); + System.out.println(messageIn); + } + +}// TestDialog class