[Webkit-unassigned] [Bug 41600] New: Provide better error message for non-generic function type errors

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=41600

           Summary: Provide better error message for non-generic function
                    type errors
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P3
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kent.hansen at nokia.com


o = { toString: Function.prototype.toString }; o.toString()

produces

"TypeError: Type error"

It would be nice if the output was more descriptive; e.g. SpiderMonkey produces "TypeError: Function.prototype.toString called on incompatible object", and V8 produces "TypeError: Function.prototype.toString is not generic".

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