[Webkit-unassigned] [Bug 80217] New: Split JSArray's [[Put]] & [[DefineOwnProperty]] traps.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=80217

           Summary: Split JSArray's [[Put]] & [[DefineOwnProperty]] traps.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: barraclough at apple.com


putByIndex() provides similar behavior to put(), but for indexed property names.  Many places in ArrayPrototype call putByIndex() where they really mean to call [[DefineOwnProperty]].  This is only okay due to a bug – putByIndex should be calling numeric accessors (& respecting numeric read only properties) on the prototype chain, but isn't.  Add a new putDirectIndex (matching JSObject's putDirect* methods), to correctly provide a fast [[DefineOwnProperty]] interface.

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