[Webkit-unassigned] [Bug 122976] New: ArrayBuffer is not a Function, does not support bind(), apply(), etc.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122976

           Summary: ArrayBuffer is not a Function, does not support
                    bind(), apply(), etc.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.8
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: justinfagnani at google.com


ArrayBuffer is an ArrayBufferConstructor, which is a callable object, not a Function, and therefore is missing bind(), call(), apply(), etc.

Some techniques for calling arbitrary constructors with arbitrary argument lists involve calling bind() and apply(), like so:

function applyToConstructor(constructor, argArray) {
    var args = [null].concat(argArray);
    var factoryFunction = constructor.bind.apply(constructor, args);
    return new factoryFunction();
}

Passing ArrayBuffer as the constructor fails in Safari.

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