[Webkit-unassigned] [Bug 151560] New: Need non costly way to know whether a given pointer is cell and live

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151560

            Bug ID: 151560
           Summary: Need non costly way to know whether a given pointer is
                    cell and live
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: utatane.tea at gmail.com

In GeneratorFrame save operation, we need to emit a write barrier to live cells.
But C stack may contain any invalid values.

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