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LibWeb: Handle reference cycles in SVG gradient linking

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Since SVG gradients can reference each other, we have to keep track of
visited gradients when traversing the link chain, or we will recurse
infinitely when there's a reference cycle.
This commit is contained in:
Andreas Kling
2024-03-10 12:18:09 +01:00
parent 1b8d8c7bbc
commit 2e0297d703
Notes: sideshowbarker 2024-07-17 02:14:39 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/2e0297d703
Pull-request: https://github.com/SerenityOS/serenity/pull/23549
8 changed files with 155 additions and 36 deletions
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13
Tests/LibWeb/Text/input/SVG/gradient-with-reference-cycle.html Normal file
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<!doctype html>
<script src="../include.js"></script>
<svg>
<linearGradient id="lol" href="#lmao"/>
<linearGradient id="lmao" href="#even"/>
<linearGradient id="even" href="#lol"/>
<rect fill="url(#lol)" />
</svg>
<script>
test(() => {
println("PASS (didn't hang or crash)");
});
</script>