[Webkit-unassigned] [Bug 252083] New: ClonedArguments::isIteratorProtocolFastAndNonObservable() should check didTransition() earlier

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=252083

            Bug ID: 252083
           Summary: ClonedArguments::isIteratorProtocolFastAndNonObservabl
                    e() should check didTransition() earlier
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Keywords: InRadar
          Severity: Minor
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ashvayka at apple.com

Currently structure->storedPrototypeObject()->needsSlowPutIndexing() may cause a crash.

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