[webkit-changes] [WebKit/WebKit] eac7aa: Use-after-free crash under EventTarget::innerInvok...

[Chris Dumez]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: eac7aa0748e71af41a45f74aed3448458734c12a
      https://github.com/WebKit/WebKit/commit/eac7aa0748e71af41a45f74aed3448458734c12a
  Author: Chris Dumez <cdumez at apple.com>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    A LayoutTests/fast/events/document-destruction-during-event-firing-crash-expected.txt
    A LayoutTests/fast/events/document-destruction-during-event-firing-crash.html

  Log Message:
  -----------
  Use-after-free crash under EventTarget::innerInvokeEventListeners()
https://bugs.webkit.org/show_bug.cgi?id=263029
rdar://116802026

Reviewed by Ryosuke Niwa.

Make sure we keep the script execution context alive by holding it in a Ref<>.

* LayoutTests/fast/events/document-destruction-during-event-firing-crash-expected.txt: Added.
* LayoutTests/fast/events/document-destruction-during-event-firing-crash.html: Added.
* Source/WebCore/dom/EventTarget.cpp:
(WebCore::EventTarget::innerInvokeEventListeners):

Originally-landed-as: 267815.272 at safari-7617-branch (fc0cce085a99). rdar://119565389
Canonical link: https://commits.webkit.org/272315@main