Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: ce5c270171963802294b8050b40bf05d6f874eef
https://github.com/WebKit/WebKit/commit/ce5c270171963802294b8050b40bf05d6f874eef
Author: Ryosuke Niwa <[email protected]>
Date: 2026-03-24 (Tue, 24 Mar 2026)
Changed paths:
A LayoutTests/resize-observer/resize-observer-observe-twice-expected.txt
A LayoutTests/resize-observer/resize-observer-observe-twice.html
M Source/WebCore/page/ResizeObserver.cpp
Log Message:
-----------
REGRESSION(309376@main): Crash in ResizeObserver::observeInternal
https://bugs.webkit.org/show_bug.cgi?id=310608
rdar://173145739
Reviewed by Anne van Kesteren.
The bug was caused by ResizeObserver::observeInternal calling
ResizeObserver::unobserve,
which removes the entry from ListHashSet and invalidates the ListHashSet
iterator.
Fixed the crash by storing the value in a local variable and avoid accessing it
via
the invalidated iterator.
Test: resize-observer/resize-observer-observe-twice.html
* LayoutTests/resize-observer/resize-observer-observe-twice-expected.txt: Added.
* LayoutTests/resize-observer/resize-observer-observe-twice.html: Added.
* Source/WebCore/page/ResizeObserver.cpp:
(WebCore::ResizeObserver::observeInternal):
Canonical link: https://commits.webkit.org/309875@main
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