[Webkit-unassigned] [Bug 71333] New: Object.getOwnPropertyDescriptor().get/set does not behave the same as __lookupGetter__/__lookupSetter__ on window properties

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=71333

           Summary: Object.getOwnPropertyDescriptor().get/set does not
                    behave the same as __lookupGetter__/__lookupSetter__
                    on window properties
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: sam at webkit.org


Object.getOwnPropertyDescriptor().get/set does not behave the same as __lookupGetter__/__lookupSetter__ on window properties.

For:

window.y = 1;
window.__defineGetter__("y", function() { return "window.y __getter__"; });

__lookupGetter__ doesn't do the same thing as Object.getOwnPropertyDescriptor:

typeof window.__lookupGetter__('y') != typeof Object.getOwnPropertyDescriptor(window, 'y').get;

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