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Date: Fri, 30 Nov 2007 09:40:43 -0800 (PST)
From: "Alexei Zakharov (JIRA)" <jira@apache.org>
To: commits@harmony.apache.org
Subject: [jira] Commented: (HARMONY-4749) [classlib][awt][image] GifDecoder
 throws ArrayIndexOutOfBoundsException
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    [ https://issues.apache.org/jira/browse/HARMONY-4749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12547219 ] 

Alexei Zakharov commented on HARMONY-4749:
------------------------------------------

The good news is that DRLVM doesn't crash any more. Now it behaves exactly as J9 on the above test.

> [classlib][awt][image] GifDecoder throws ArrayIndexOutOfBoundsException
> -----------------------------------------------------------------------
>
>                 Key: HARMONY-4749
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4749
>             Project: Harmony
>          Issue Type: Bug
>          Components: App-Oriented Bug Reports, Classlib
>            Reporter: Vasily Zakharov
>         Attachments: DRLVM.jpg, IBMVME.jpg, RI.jpg, triangle-rt.gif
>
>
> On some files, GifDecoder throws ArrayIndexOutOfBoundsException. Here's the reproducer:
> import javax.swing.JFrame;
> import javax.swing.JEditorPane;
> public class Test {
>     public static void main(String argv[]) {
>         try {
>             JFrame frame = new JFrame("Test");
>             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>             frame.setSize(100, 100);
>             frame.add(new JEditorPane("text/html", "<img src=\"file:triangle-rt.gif\">"));
>             frame.setVisible(true);
>         } catch (Throwable e) {
>             e.printStackTrace(System.out);
>         }
>     }
> } 
> Output on Harmony/IBM VME:
> java.lang.ArrayIndexOutOfBoundsException
>         at java.lang.System.arraycopy(System.java:327)
>         at java.lang.System.arraycopy(System.java:237)
>         at org.apache.harmony.awt.gl.image.OffscreenImage.setPixels(OffscreenImage.java:286)
>         at org.apache.harmony.awt.gl.image.ImageDecoder.setPixels(ImageDecoder.java:180)
>         at org.apache.harmony.awt.gl.image.GifDecoder$GifGraphicBlock.sendNewData(GifDecoder.java:446)
>         at org.apache.harmony.awt.gl.image.GifDecoder.decodeImage(GifDecoder.java:221)
>         at org.apache.harmony.awt.gl.image.DecodingImageSource.load(DecodingImageSource.java:252)
>         at org.apache.harmony.awt.gl.image.ImageLoader.run(ImageLoader.java:153)
> Also, the exception causes an image placeholder to be displayed instead of the image (see attached screenshots).
> On DRLVM (both Jit and Interpreter), the same test crashes instead of throwing exception (see attached screenshot, clicking Retry - Debug doesn't provide any detail). As the crash occurs in exactly the same local situation, I suppose the problem is not in DRLVM but in classlib indeed. If investigation proves otherwise - a separate issue would have to be filed.
> The test file triggering the bug is triangle-rt.gif file from Abbot package (http://abbot.sourceforge.net). This file is attached here purely for purpose of reproducing and localizing the bug, and as Abbot is CPL, I suppose this file must not be included into Harmony in any form.
> The problem was discovered while trying to run Abbot Costello on Harmony.

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