<AWT Dev> [9] Fix for JDK-8159956 : EXCEPTION_ACCESS_VIOLATION in sun.awt.windows.ThemeReader.getThemeMargins

[Phil Race]

+1

-phil.

On 07/13/2016 11:52 PM, Ajit Ghaisas wrote:
>
> Thanks Phil.
>
> I have updated the test as discussed. Here is the updated webrev.
>
> http://cr.openjdk.java.net/~aghaisas/8159956/webrev.01/ 
> <http://cr.openjdk.java.net/%7Eaghaisas/8159956/webrev.01/>
>
> Regards,
>
> Ajit
>
> *From:*Philip Race
> *Sent:* Wednesday, July 13, 2016 10:11 PM
> *To:* Ajit Ghaisas
> *Cc:* Semyon Sadetsky; awt-dev at openjdk.java.net
> *Subject:* Re: [9] Fix for JDK-8159956 : EXCEPTION_ACCESS_VIOLATION in 
> sun.awt.windows.ThemeReader.getThemeMargins
>
> This seems fine to me although as mentioned off-line
> I think the test could be made to run on all platforms.
>
> -phil.
>
>
> On 7/11/16, 3:04 AM, Ajit Ghaisas wrote:
>
>     Hi,
>
>         This is the fix for JVM crash bug.
>
>     https://bugs.openjdk.java.net/browse/JDK-8159956
>
>     Root Cause :
>
>         newInsets() method in
>     java.desktop/windows/native/libawt/windows/ThemeReader.cpp file
>     tries to access AwtToolkit::insetsMID method id.
>
>         In awt headless mode, this method id is not initialized.
>     Trying to access it results in JVM crash.
>
>     Fix :
>
>        Creating an object of 'Insets' class is allowed in awt headless
>     mode. (Refer to existing test -
>     test/java/awt/Insets/HeadlessInsets.java)
>
>        AwtToolkit::insetsMID method is a handle to the constructor of
>     Insets class.
>
>        The fix for this bug is to Initialize the AwtToolkit::insetsMID
>     even in awt headless mode.
>
>        This is achieved by invoking native method initIDs() from
>     Toolkit.java static initializer block -- this was avoided in
>     headless mode using a check. I have removed this check.
>
>     Webrev :
>
>     http://cr.openjdk.java.net/~aghaisas/8159956/webrev.00
>     <http://cr.openjdk.java.net/%7Eaghaisas/8159956/webrev.00>
>
>         Request you to review.
>
>     Regards,
>
>     Ajit
>

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