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rfc, cfg-path-version: mention target_has_atomic in rationale.

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Mazdak Farrokhzad 2019-01-11 03:55:16 +01:00
parent 4618306ac7
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@ -344,6 +344,10 @@ However, doing so even once means that you will need to release new versions
of your crate. If you instead use `accessible(..)` you won't need to use
it even once unless the name of the path changes in-between.
Another use case `accessible(..)` supports that `version(..)` doesn't is checking
support for atomic types, e.g. `accessible(::std::sync::atomic::AtomicU8)`.
This subsumes the proposed `#[cfg(target_has_atomic = "..")]` construct.
### Preventing relative paths
The reason why we have enforced that all paths must start with `::` inside