[Webkit-unassigned] [Bug 278778] Adopted stylesheet wrappers get garbage collected even though still reachable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=278778

Alexey Proskuryakov <ap at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|The stylesheet is garbage   |Adopted stylesheet wrappers
                   |collected even though it is |get garbage collected even
                   |still in use.               |though still reachable
                 CC|                            |cdumez at apple.com,
                   |                            |koivisto at iki.fi,
                   |                            |rniwa at webkit.org

--- Comment #2 from Alexey Proskuryakov <ap at webkit.org> ---
This reproduces in Safari 18 beta.

Updated the test to remove WeakMap, as I don't think that it's relevant here.

The test succeeds in Chrome, although it appears to run into a Chrome developer tools bug - garbage collection doesn't happen even if I comment out the "document.adoptedStyleSheets = [stylesheet]" string. Seems like Chrome developer tools are holding to the stylesheet, so the way to test in Chrome is to open the test without devtools open, and to open them afterwards.

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