Maybe Sergey forgot to post it.

-phil.

On 12/11/19 1:53 AM, Prasanta Sadhukhan wrote:

Hi Dmitry,

It seems that webrev is not accessible anymore, but I guess it will be good if both the fix can be clubbed together.

Regards

Prasanta

On 11-Dec-19 3:15 PM, Dmitry Markov wrote:
Hi Prasanta,

I guess the NPE, you observed, is already addressed by https://bugs.openjdk.java.net/browse/JDK-8235739 (which is on review now, see http://mail.openjdk.java.net/pipermail/awt-dev/2019-December/015621.html).
Can you try with fix for 8235739, please?

Thanks,
Dmitry

On 11 Dec 2019, at 09:16, Prasanta Sadhukhan <prasanta.sadhuk...@oracle.com <mailto:prasanta.sadhuk...@oracle.com>> wrote:

Hi Sergey,

The regression test fails for me on windows with NPE

java.lang.NullPointerException
        at 
java.desktop/sun.awt.windows.WComponentPeer.getGraphics(WComponentPeer.java:582)
        at java.desktop/java.awt.Component.getGraphics(Component.java:3124)
        at GetGraphicsStressTest.lambda$test$2(GetGraphicsStressTest.java:63)
        at java.base/java.lang.Thread.run(Thread.java:833)
Probably we need to do a null check there in windows too.

Regards
Prasanta
On 11-Dec-19 1:02 AM, Sergey Bylokhov wrote:
Hello.
Please review the fix for JDK 14.

Bug: https://bugs.openjdk.java.net/browse/JDK-8235638
Fix: http://cr.openjdk.java.net/~serb/8235638/webrev.00

I have found a root cause of intermittent failures of some stress tests in the JDK on macOS. Such tests usually show/hide a lot of frames, and fails because of NPE in the
LWWindowPeer.getOnscreenGraphics()
The reason is incorrect null check. We should read the surfaceData to the local var apply a null check and then use it, otherwise, the data may be changed to null after the check.




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