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List:       openjdk-2d-dev
Subject:    Re: [OpenJDK 2D-Dev] RFR: 8254024: Enhance native libs for AWT and Swing to work with GraalVM Native
From:       Andrii Rodionov <github.com+1538227+arodionov () openjdk ! java ! net>
Date:       2020-10-16 22:23:10
Message-ID: JP8cFm068Vofw0c7xs07txBCteQ9XMcCgHqs_jD-LBU=.3fba529f-799a-4a2e-b9ec-8fdc3f8b84cc () github ! com
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On Fri, 16 Oct 2020 21:54:56 GMT, Andrii Rodionov \
<github.com+1538227+arodionov@openjdk.org> wrote:

> > > Actually, we have found this issue during JCK tests execution that was built as \
> > > a native image. The fix criteria are the successful tests run.
> > 
> > But what exact steps should be done to reproduce this bug w/o using jck or any \
> >                 external tools? Something like:
> > - Clone JDK
> > - Build JDK using some specific options.
> > - Create some small test case
> > - Somehow create the native image
> > - Run the app -> boom -> bug is reproduced
> 
> Yes, I understand what you mean.
> Unfortunately, I don't know a straightforward way.
> Maybe the easiest way to reproduce an error and validate the fix is to download the \
> future version of GraalVM with AWT/Swing support (hope it will be at the end of \
> October), replace `libawt.a` to its unpatched library version and then build a \
> native image based on the following code: float[] data = new float[]{0.0f, 1.1f, \
> 2.2f, 3.3f, 4.4f, 5.5f, 6.6f, 7.7f, 8.8f}; Kernel kernel = new Kernel(3, 3, data);
> ConvolveOp op = new ConvolveOp(kernel);
> 
> BufferedImage src = new BufferedImage(10, 10, BufferedImage.TYPE_INT_ARGB);
> BufferedImage dest = new BufferedImage(10, 10, BufferedImage.TYPE_INT_ARGB);
> 
> op.filter(src, dest);
> The built image run should throw "Unable to convolve src image" ImagingOpException \
> exception.

In general, the 2 following points should be changed and tested in the static \
                libraries:
- rename conflicting/duplicate symbols in libraries that are linked together
- have a workaround for the functionality implemented via dlopen/dlsym

-------------

PR: https://git.openjdk.java.net/jdk/pull/562


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