[Webkit-unassigned] [Bug 48953] New: Unexpected TypeError: Result of expression [[object DOMWindowConstructor]] is not a constructor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48953

           Summary: Unexpected TypeError: Result of expression [[object
                    DOMWindowConstructor]] is not a constructor
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: matt11ag-webkitbugs at yahoo.com


In the latest WebKit nightly, I am seeing an unexpected error message:

TypeError: Result of expression 'TestSample' [[object DOMWindowConstructor]] is not a constructor.

for code that works just fine in Apple Safari 5.0.2, Google Chrome 7.0.517.41, and Firefox 3.6.11.

----

var constructor = new Function("id", "desc", "this.id = id; this.description = desc;");
constructor.prototype.setDescription = function(desc){this.description = desc};
constructor.prototype.getDescription = function(){return this.description};

// Changing the order of the following 2 lines does not make a difference:
window["TestSample"] = constructor;
constructor.getInstanceFromFactory = function (id, desc){return new TestSample(id, desc);};

var sample = TestSample.getInstanceFromFactory("hello","success if you see this");
alert(sample.getDescription());

----

Expected result is that you see an alert with the text "success if you see this" but in WebKit nightly, the above JavaScript TypeError is logged in the JavaScript console instead.

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