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Rollup merge of #136040 - mu001999-contrib:cleanup, r=Mark-Simulacrum

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Remove unused trait BoundedSize

Detected by #128637

The usage of this trait is removed in #135104

r? `@the8472`
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Michael Goulet 2025-03-23 14:59:29 -04:00 committed by GitHub
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library/core/src/iter/adapters/flatten.rs
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@ -172,61 +172,6 @@ where
}
}
/// Marker trait for iterators/iterables which have a statically known upper
/// bound of the number of items they can produce.
///
/// # Safety
///
/// Implementations must not yield more elements than indicated by UPPER_BOUND if it is `Some`.
/// Used in specializations. Implementations must not be conditional on lifetimes or
/// user-implementable traits.
#[rustc_specialization_trait]
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe trait BoundedSize {
const UPPER_BOUND: Option<NonZero<usize>> = NonZero::new(1);
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T> BoundedSize for Option<T> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T> BoundedSize for option::IntoIter<T> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T, U> BoundedSize for Result<T, U> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T> BoundedSize for result::IntoIter<T> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T> BoundedSize for Once<T> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T> BoundedSize for OnceWith<T> {}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T, const N: usize> BoundedSize for [T; N] {
const UPPER_BOUND: Option<NonZero<usize>> = NonZero::new(N);
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<T, const N: usize> BoundedSize for array::IntoIter<T, N> {
const UPPER_BOUND: Option<NonZero<usize>> = NonZero::new(N);
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<I: BoundedSize, P> BoundedSize for Filter<I, P> {
const UPPER_BOUND: Option<NonZero<usize>> = I::UPPER_BOUND;
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<I: BoundedSize, P> BoundedSize for FilterMap<I, P> {
const UPPER_BOUND: Option<NonZero<usize>> = I::UPPER_BOUND;
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<I: BoundedSize, F> BoundedSize for Map<I, F> {
const UPPER_BOUND: Option<NonZero<usize>> = I::UPPER_BOUND;
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<I: BoundedSize> BoundedSize for Copied<I> {
const UPPER_BOUND: Option<NonZero<usize>> = I::UPPER_BOUND;
}
#[unstable(issue = "none", feature = "inplace_iteration")]
unsafe impl<I: BoundedSize> BoundedSize for Cloned<I> {
const UPPER_BOUND: Option<NonZero<usize>> = I::UPPER_BOUND;
}
/// An iterator that flattens one level of nesting in an iterator of things
/// that can be turned into iterators.
///