[Webkit-unassigned] [Bug 185208] New: JSCore does not support "null" as a [Symbol.iterator] property of a typedArray

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=185208

            Bug ID: 185208
           Summary: JSCore does not support "null" as a [Symbol.iterator]
                    property of a typedArray
           Product: WebKit
           Version: Safari 11
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mam7 at cin.ufpe.br

Hi there, 

there is an inconsistency when iterator value of a typedArray is "null".

Tag: 606.1.9.4
OS: Ubuntu 16.04 x86_64

According to GetMethod (object, @@iterator) ES6 specification (https://www.ecma-international.org/ecma-262/8.0/index.html#sec-typedarray-object), if the iterator value is either "undefined" or "null", the method should return "undefined", but JSCore does not support this property as "null".

Steps to reproduce:
    let typedArray = new Int8Array(
  {
    [Symbol.iterator]: null
  }
)

Actual results:
Exception: TypeError: Type error

Expected results:
Pass without failures

Other JavaScript engines such as V8, SpiderMonkey and Chakra works as expected.

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