Bug 185208 – JSCore does not support "null" as a [Symbol.iterator] property of a typedArray

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: JavaScriptCore

[Mariana Moura]

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.

cinfuzz

[Radar WebKit Bug Importer]

<rdar://problem/48270655>

[Alexey Shvayka]

(In reply to Mariana Moura from comment #0)
> 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".

r262567 fixed GetMethod with iterators, including %TypedArray% constructor case.
test262 coverage: https://github.com/tc39/test262/pull/2639.

*** This bug has been marked as a duplicate of bug 212771 ***