c2f228f654
clarify that unsafe code must not rely on our safe traits This adds a disclaimer to PartialEq, Eq, PartialOrd, Ord, Hash, Deref, DerefMut. We already have a similar disclaimer in ExactSizeIterator (worded a bit differently): ``` /// Note that this trait is a safe trait and as such does *not* and *cannot* /// guarantee that the returned length is correct. This means that `unsafe` /// code **must not** rely on the correctness of [`Iterator::size_hint`]. The /// unstable and unsafe [`TrustedLen`](super::marker::TrustedLen) trait gives /// this additional guarantee. ``` If there are any other traits that should carry such a disclaimer, please let me know. Fixes https://github.com/rust-lang/rust/issues/73682 |
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