Escape hatch visualized:
http://wiki.ecmascript.org/doku.php?id=es3.1:attribute_states


On Thu, Oct 31, 2013 at 7:43 AM, <[email protected]> wrote:

> On 2013/10/31 08:03:20, rossberg wrote:
>
>> > > - invoking seal/freeze on an object where not all properties can be
>> > > sealed/frozen (should still generate a preventExtensions change
>> record,
>> IIRC)
>> >
>> > I can't think of how to generate this case. How can this arise?
>>
>
>  I'm sorry, you are right, it can't -- I keep forgetting that JavaScript
>> has
>>
> this
>
>> crank semantics where you can still change a data property from writable
>> to
>> non-writable, even if it's allegedly non-configurable. 8/
>>
>
> Hehe... we had the exact same discussion yesterday on IM before we
> remembered
> the Mark Miller escape hatch.
>
>
>
> https://codereview.chromium.**org/47703003/<https://codereview.chromium.org/47703003/>
>
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-- 
    Cheers,
    --MarkM

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