Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 1f6b6bea2079964f2f70dd12df7f4b7fbc335aa2
https://github.com/WebKit/WebKit/commit/1f6b6bea2079964f2f70dd12df7f4b7fbc335aa2
Author: peter <[email protected]>
Date: 2025-09-09 (Tue, 09 Sep 2025)
Changed paths:
A LayoutTests/fast/dom/gc-abort-controller-expected.txt
A LayoutTests/fast/dom/gc-abort-controller.html
M Source/WebCore/bindings/js/JSAbortSignalCustom.cpp
Log Message:
-----------
Fix AbortController memory leak with event
https://bugs.webkit.org/show_bug.cgi?id=298499
Reviewed by Ryosuke Niwa.
AbortSignals with event listeners were never garbage collected due to incorrect
reachability check in JSAbortSignalOwner::isReachableFromOpaqueRoots().
The method unconditionally returned true for signals with event listeners, even
when they had no other references.
Changed the logic to check containsWebCoreOpaqueRoot() before marking the
signal as reachable, allowing proper garbage collection.
* LayoutTests/fast/dom/gc-abort-controller-expected.txt: Added.
* LayoutTests/fast/dom/gc-abort-controller.html: Added.
* Source/WebCore/bindings/js/JSAbortSignalCustom.cpp:
(WebCore::JSAbortSignalOwner::isReachableFromOpaqueRoots):
Canonical link: https://commits.webkit.org/299758@main
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