[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 #5 from Geoffrey Garen <ggaren at apple.com> ---
(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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