I wonder whether having the language know about array bounds (i.e. memory safety) makes it easier to deploy mitigations against Spectre…
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@rocallahan linked https://webkit.org/blog/8048/what-spectre-and-meltdown-mean-for-webkit/ … on IRC and made me realize <[T]>::get *could* use the same index mangling trick before returning Some/None, so the effective out-of-bounds address is *never* computed, not even speculatively. -
We should file a bug to do this in Rust! Would be great to be able to comprehensively deploy this fix across the ecosystem.
End of conversation
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