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Rollup merge of #79983 - petar-dambovaliev:master, r=Dylan-DPC

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fix indefinite article in cell.rs
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Yuki Okushi 2021-02-12 19:32:06 +09:00 committed by GitHub
commit 0b6876cbe7
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library/core/src/cell.rs
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@ -1622,7 +1622,7 @@ impl<T: ?Sized + fmt::Display> fmt::Display for RefMut<'_, T> {
/// `UnsafeCell<T>` is a type that wraps some `T` and indicates unsafe interior operations on the
/// wrapped type. Types with an `UnsafeCell<T>` field are considered to have an 'unsafe interior'.
/// The `UnsafeCell<T>` type is the only legal way to obtain aliasable data that is considered
/// mutable. In general, transmuting an `&T` type into an `&mut T` is considered undefined behavior.
/// mutable. In general, transmuting a `&T` type into a `&mut T` is considered undefined behavior.
///
/// If you have a reference `&SomeStruct`, then normally in Rust all fields of `SomeStruct` are
/// immutable. The compiler makes optimizations based on the knowledge that `&T` is not mutably