[Webkit-unassigned] [Bug 217183] [iOS 14] Hang in -[WKUserDefaults _notifyObserversOfChangeFromValuesForKeys:toValuesForKeys:]

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=217183

Darin Adler <darin at apple.com> changed:

           What    |Removed                     |Added
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                 CC|                            |darin at apple.com

--- Comment #16 from Darin Adler <darin at apple.com> ---
Comment on attachment 411167
  --> https://bugs.webkit.org/attachment.cgi?id=411167
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=411167&action=review

> Source/WebKit/UIProcess/Cocoa/PreferenceObserver.mm:95
> +    if (!isMainThread()) {
> +        [self findPreferenceChangesAndNotifyForKeys:oldValues toValuesForKeys:newValues];
> +        return;
> +    }

Why do we need this?

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