[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 #15 from Saam Barati <sbarati at apple.com> ---
(In reply to comment #14)
> Comment on attachment 286755 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=286755&action=review
> 
> > JSTests/stress/for-in-tests.js:161
> > +    var foo = function(a, b, first) {
> > +        {   
> > +            let p = 'some-value';
> > +            for (var p = b in a) {}
> > +            if (first)
> > +                return p;
> > +        }
> > +        return p;
> > +    };
> 
> 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.

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