On Fri, 21 Mar 2025 08:17:39 GMT, Jay Bhaskar <jbhas...@openjdk.org> wrote:

> Issue: 
> Ref: Webkit 619.1 
> javafx.web/src/main/native/Source/WebCore/platform/graphics/ImageSource.cpp 
> refactoring in 620.1
> In the case of the canvas pattern using a transform property filled with an 
> SVGMatrix()
> created by an SVG element, `frame.m_nativeImage->size()` calls 
> `NativeImage::size()`
> from NativeImageJava.cpp. In this scenario, 
> `*m_platformImage->getImage().get()` may be invalid,
> as the image decoder has already populated `frame.m_size` during image 
> metadata caching.
> 
> Solution:
> To avoid potential invalid accesses and unintended size resets, only update 
> `m_size`
> if the frame does not already have a valid native image.

I attached a simple `canvas.html`, taken from the failing CanvasTest unit test 
to the JBS bug. That test fails to render on WebKit 620.1 (although, unlike the 
unit test, it doesn't crash) without this fix and renders correctly with this 
fix.

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PR Comment: https://git.openjdk.org/jfx/pull/1740#issuecomment-2744454664

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