Bug 311001

Summary:	Fix uninitialized member variables in WebAnimation and StyleOriginatedAnimation
Product:	WebKit	Reporter:	Nikolas Zimmermann <zimmermann>
Component:	New Bugs	Assignee:	Nikolas Zimmermann <zimmermann>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Nikolas Zimmermann

Reported 2026-03-28 15:47:02 PDT

valgrind complained about: ==1173712== Conditional jump or move depends on uninitialised value(s) ==1173712== at 0x8652740: WebCore::WebAnimation::updateFinishedState(WebCore::WebAnimation::DidSeek, WebCore::WebAnimation::SynchronouslyNotify) ==1173712== by 0x8652FA0: WebCore::WebAnimation::runPendingPlayTask() ==1173712== by 0x86539A6: WebCore::WebAnimation::maybeMarkAsReady() ==1173712== by 0x8641449: WebCore::WebAnimation::tick() ==1173712== by 0x86413BA: WebCore::StyleOriginatedAnimation::tick() ==1173712== by 0x860BA17: WebCore::AnimationTimelinesController::updateAnimationsAndSendEvents(WTF::Seconds) ==1173712== by 0x8AC1CBA: WebCore::Document::updateAnimationsAndSendEvents() A quick check reveals uninitialized variables - fix that.

Attachments
Add attachment proposed patch, testcase, etc.

Nikolas Zimmermann

Comment 1 2026-03-28 15:49:19 PDT

Pull request: https://github.com/WebKit/WebKit/pull/61594

EWS

Comment 2 2026-03-29 03:15:49 PDT

Committed 310179@main (1af4da6b6ac2): <https://commits.webkit.org/310179@main> Reviewed commits have been landed. Closing PR #61594 and removing active labels.

Radar WebKit Bug Importer

Comment 3 2026-03-29 03:16:12 PDT

<rdar://problem/173623456>

Note You need to log in before you can comment on or make changes to this bug.