[Webkit-unassigned] [Bug 243342] Atomics are unavailable without the COOP/COEP headers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243342

--- Comment #6 from Chris Dumez <cdumez at apple.com> ---
(In reply to Geoffrey Garen from comment #5)
> (In reply to Chris Dumez from comment #4)
> > + a few JSC people: Did we intentionally disable Atomics due to Spectre? I
> > assume we did.
> 
> My understanding is that the Spectre risk comes from shared memory, not from
> atomics. So, enabling just Atomics without shared memory should be fine. Of
> course, it's also useless. Which is why it's fine.
> 
> But if enabling Atomics improves interop, it seems worth doing, even if it's
> useless as a programming model.

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