I prefer meaningful test names .. the bug id is already in the @bug tag
and a test can later be updated to test > 1 bug.
Did you verify that you are in fact capturing stderr - even in
othervm mode - when running the test under jtreg ?
Even when setting up a new VM jtreg may capture this for you.

-phil.


On 07/05/2016 04:42 AM, Ajit Ghaisas wrote:
Thanks Jim for suggesting test should have its own VM. I agree with it.

Here is the updated webrev :
http://cr.openjdk.java.net/~aghaisas/8160421/webrev.01/

Phil, can you please review it?

Regards,
Ajit


-----Original Message-----
From: Jim Graham
Sent: Friday, July 01, 2016 5:13 AM
To: Ajit Ghaisas; Philip Race; Sergey Bylokhov; 2d-dev
Subject: Re: [OpenJDK 2D-Dev] [9] Fix for JDK-8160421 : Regression: JDK-8139192 
causes NPE in java.awt.Toolkit.createCustomCursor()

The solution looks fine to me.

I didn't run the test case, but about the only issue I can see with it is 
whether it should have a flag to run it in its own VM because of its 
interaction with System.err.  Phil?

                        ...jim

On 06/30/2016 06:41 AM, Ajit Ghaisas wrote:
Hi,

Bug :
      This is regarding a NPE getting printed as stacktrace in 
java.awt.Toolkit.createCustomCursor() method.
      The bug is described at :
https://bugs.openjdk.java.net/browse/JDK-8160421

Root Cause :
      Fix of bug JDK-8139192 : Custom ImageFilters return blank images in Java 
8(.45) while working in 7.
      The above fix added a RuntimeException catch & log mechanism to support a 
ImageFilter which was broken due to the second imageComplete() call in 
OffScreenImageSource.produce() method.

Analysis:
      Without the fix of JDK-8139192, java.awt.Toolkit.createCustomCursor() 
call results in
      NullPointerException when imageComplete(ImageConsumer.STATICIMAGEDONE) 
call is made - but, it gets consumed silently.
      Cathing RuntimeException() out of 
imageComplete(ImageConsumer.STATICIMAGEDONE) was added to fix JDK-8160421.
      This started catching & logging the exception in case 'theConsumer' has 
unregistered itself as a result of call
                     theConsumer.imageComplete(ImageConsumer.SINGLEFRAMEDONE);
       This log is undesirable as this mechanism is used in 
java.awt.Toolkit.createCustomCursor() and may be in other places.

Fix :
      Make the call to imageComplete(ImageConsumer.STATICIMAGEDONE) only if 
'theConsumer' has not been unregistered.

Webrev:
      http://cr.openjdk.java.net/~aghaisas/8160421/webrev.00/

Request you to review.

Regards,
Ajit


Reply via email to