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Date: Fri, 6 Oct 2006 00:49:25 -0700 (PDT)
From: "Maxim Makarov (JIRA)" <jira@apache.org>
To: harmony-commits@incubator.apache.org
Subject: [jira] Created: (HARMONY-1739) [drlvm] Invocation of
 JFrame.setVisible(true)  into  harmony unit tests leads to VM crash on
 Linux
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[drlvm] Invocation of JFrame.setVisible(true)  into  harmony unit tests leads to VM crash on Linux
--------------------------------------------------------------------------------------------------

                 Key: HARMONY-1739
                 URL: http://issues.apache.org/jira/browse/HARMONY-1739
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
         Environment: Linux
            Reporter: Maxim Makarov


Problem:

Invocation of JFrame.setVisible(true) method in harmony unit tests leads to VM crash on Linux, but  it happens unstable and occurs when test is in JUnit format.

If VM if run with JET then test fails sometimes with error

.Uncaught exception in AWT-NativeEventThread:
java.lang.NullPointerException
        at org.apache.harmony.awt.wtk.linux.LinuxEvent.processConfigureEvent(LinuxEvent.java:358)
        at org.apache.harmony.awt.wtk.linux.LinuxEvent.setEvent(LinuxEvent.java:141)
        at org.apache.harmony.awt.wtk.linux.LinuxEvent.<init>(LinuxEvent.java:78)
        at org.ap
ache.harmony.awt.wtk.linux.LinuxEventQueue.enqueue(LinuxEventQueue.java:94)
        at org.apache.harmony.awt.wtk.linux.LinuxEventQueue.dispatchEvent(LinuxEventQueue.java:87)
        at org.apache.harmony.awt.wtk.NativeEventThread.runModalLoop(NativeEventThread.java:57)
        at org.apache.harmony.awt.wtk.NativeEventThread.run(NativeEventThread.java:51)
        at java.lang.Thread.runImpl(Unknown Source)

Code for reproducing (Try to run this test several times): 

import javax.swing.*;

public class Test extends junit.framework.TestCase {
    private JFrame frame;

    protected void tearDown() throws Exception {
        super.tearDown();
         frame.dispose();
    }

    public void testTest() {
        frame = new JFrame();
        frame.setVisible(true);
    }

}

Running script:

#!/bin/bash

# set path to Harmony
HARMONY=" ... "

for i in 1 2 3 4 5; do
    $HARMONY/bin/java -showversion -cp "junit.jar:." junit.textui.TestRunner Test
done

Output on RI:
----------------
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode)
.
Time: 0.263

OK (1 tests)

Output on Harmony:
------------------------

$run.sh

Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
java version "1.5.0"
pre-alpha : not complete or compatible
svn = r452710, (Oct  4 2006), Linux/ia32/gcc 3.3.4, release build 
http://incubator.apache.org/harmony <http://incubator.apache.org/harmony> 
..
SIGSEGV in VM code.
Stack trace:
Time: 0.741

OK (1 tests)

Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
java version "1.5.0"
pre-alpha : not complete or compatible
svn = r452710, (Oct  4 2006), Linux/ia32/gcc 3.3.4, release build 
http://incubator.apache.org/harmony <http://incubator.apache.org/harmony> 
..
Time: 0.746

OK (1 tests)

Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or its licensors, as applicable.
java version "1.5.0"
pre-alpha : not complete or compatible
svn = r452710, (Oct  4 2006), Linux/ia32/gcc 3.3.4, release build 
http://incubator.apache.org/harmony <http://incubator.apache.org/harmony> 
..
free(): invalid pointer 0x887fb60!
Time: 0.746

OK (1 tests)

...


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