[Webkit-unassigned] [Bug 160955] [ES2016] Allow assignment in for-in head in not-strict mode

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160955

--- Comment #16 from GSkachkov <gskachkov at gmail.com> ---
Comment on attachment 286755
  --> https://bugs.webkit.org/attachment.cgi?id=286755
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=286755&action=review

>>> JSTests/stress/for-in-tests.js:161
>>> +    };
>> 
>> can you also add this test to make sure if throws a runtime exception when we write to the const variable:
>> foo = function(a, b) {
>>     {
>>         const p = 'some-value';
>>         for (var p = b in a) { }
>>     }
>> }
> 
> Correction: *when we try to write*, we should not successfully write to it.

It is already there. See line 205, but there will be Syntax  error: 'Cannot declare a var variable that shadows a let/const/class variable: '. 
I'll land patch, if there is need another test I'll add as new patch.

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