[OpenJDK 2D-Dev] ] [9] Review Request: 8156723: JVM crash at sun.java2d.windows.GDIBlitLoops.nativeBlit

[Sergey Bylokhov]

Looks fine.

On 01.11.16 19:45, Mikhail Cherkasov wrote:
> Hi all,
>
> Please review the fix:
> http://cr.openjdk.java.net/~mcherkas/8156723/webrev/
> for https://bugs.openjdk.java.net/browse/JDK-8156723 .
> To reproduce the issue there relatively complicate steps:
> 1. connect external monitor to laptop, set laptop screen as the main screen
> 2. open SwingSet2
> 3. set second screen as main screen
> 4. move SwingSet2 to second screen and maximize it
> 5. disconnect external monitor from the laptop
> 6. jvm is crashed
>
> after this steps wsdo->device becomes null there:
> http://hg.openjdk.java.net/jdk9/jdk9/jdk/file/0086eb10182b/src/java.desktop/windows/native/libawt/java2d/windows/GDIWindowSurfaceData.cpp#l131
> and JVM crashes.
> I'm not sure about root causes of this issue, but simple null-check
> fixes the issue.
>
> Thanks,
> Mikhail.


-- 
Best regards, Sergey.