improve UnsafeCell docs #82372
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improve UnsafeCell docs #82372
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Rollup of 9 pull requests Successful merges: - rust-lang#82098 (Add internal `collect_into_array[_unchecked]` to remove duplicate code) - rust-lang#82228 (Provide NonZero_c_* integers) - rust-lang#82287 (Make "missing field" error message more natural) - rust-lang#82351 (Use the first paragraph, instead of cookie-cutter text, for rustdoc descriptions) - rust-lang#82353 (rustdoc: Remove unnecessary `Cell` around `param_env`) - rust-lang#82367 (remove redundant option/result wrapping of return values) - rust-lang#82372 (improve UnsafeCell docs) - rust-lang#82379 (Fix sizes of repr(C) enums on hexagon) - rust-lang#82382 (rustdoc: Remove `fake_def_ids` RefCell) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Sometimes questions like this come up because the UnsafeCell docs say "it's the only legal way to obtain aliasable data that is considered mutable". That is not entirely correct, since raw pointers also provide that option. So I propose we focus the docs on the interaction of
UnsafeCelland shared references specifically, which is really where they are needed.