[OpenJDK 2D-Dev] Crash in CGraphicsDevice.m
philip.race at oracle.com
Wed Oct 10 16:03:15 UTC 2018
The code you suspect has nothing to do with the webrev you list.
It was introduced in fixing https://bugs.openjdk.java.net/browse/JDK-7124247
So has been there since JDK 8 GA. Not recent .. perhaps you can tell us
more about your users JDK versions and what is the earliest that
reproduces this crash ?
On 10/10/18, 8:45 AM, Bill York wrote:
> 2d-dev folks,
> I work on a product called MATLAB and we have about 60 reports from
> customers on Mac related to a crash in CGraphicsDevice.m
> Please let me know if this is the right way to report a crash and
> discuss getting it resolved.
> Here are the details:
> CGraphicsDevice.m is a native file in support of Java drawing and gets
> called from Java_sun_awt_CGraphicsDevice_nativeGetDisplayMode
> While I can’t reproduce the problem, it looks like the display pointer
> is becoming invalid for a time when the user’s laptop opens or closes.
> Looking at this source code:
> I see a direct call to CFStringCompare without a check for a NULL
> * (CFStringCompare(mode, CFSTR(kIO30BitDirectPixels),
> kCFCompareCaseInsensitive) == kCFCompareEqualTo)
> I believe if this code returned 0, the crash would not occur though
> there may be some other cleanup in the surrounding call frames.
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