[Webkit-unassigned] [Bug 162793] New: Use topVMEntryFrame to determine whether to skip the re-throw of a simulated throw.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=162793

            Bug ID: 162793
           Summary: Use topVMEntryFrame to determine whether to skip the
                    re-throw of a simulated throw.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mark.lam at apple.com

Change the ThrowScope destructor to use topVMEntryFrame (instead of topCallFrame) in the determination of whether to skip the re-throw of a simulated throw.  This is needed because the topCallFrame is not updated in operationConstructArityCheck(), whereas topVMEntryFrame is always updated properly.  Hence, we should just switch to using the more reliable topVMEntryFrame instead.

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