[Webkit-unassigned] [Bug 167652] imported/w3c/web-platform-tests/shadow-dom/slotchange.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167652

--- Comment #4 from Ryosuke Niwa <rniwa at webkit.org> ---
Created attachment 350479

  --> https://bugs.webkit.org/attachment.cgi?id=350479&action=review

Reduction

The issue here is that the JS wrapper of a HTMLSlotElement can be prematurely collected. We need to use the GC retention mechanism we introduced in https://bugs.webkit.org/show_bug.cgi?id=184307 to keep these slot elements alive.

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