Re: How to reliably make an ArrayBufferView wrapped?

+dev-tech-js-engine-internals, where relevant people are more likely to
see it :)

On 25/03/2019 09:22, violet.b...@gmail.com wrote:
> When solving this bug https://phabricator.services.mozilla.com/D24009. I need to write a test. The bug is basically caused by overlooking the possible wrapper around an ArrayBufferView that is checked by JS_IsArrayBufferViewObject().
>
> See https://searchfox.org/mozilla-central/source/js/src/vm/ArrayBufferViewObject.cpp#164, the check will return true if canUnwrapAs<ArrayBufferViewObject>(), it's possible that the object itself is not an ArrayBufferView.
>
> In the test, I want to make sure the object is indeed a wrapped one. Is there a reliable way to write JavaScript code to achieve this?
>
> Thanks!
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