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alloc: Move Cow impl to existing ones #150619

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Merged
bors merged 1 commit into from
Jan 4, 2026
Merged

alloc: Move Cow impl to existing ones #150619

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26 changes: 13 additions & 13 deletions library/alloc/src/borrow.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -16,19 +16,6 @@ use crate::fmt;
#[cfg(not(no_global_oom_handling))]
use crate::string::String;

// FIXME(inference): const bounds removed due to inference regressions found by crater;
// see https://github.com/rust-lang/rust/issues/147964
// #[rustc_const_unstable(feature = "const_convert", issue = "143773")]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, B: ?Sized + ToOwned> Borrow<B> for Cow<'a, B>
// where
// B::Owned: [const] Borrow<B>,
{
fn borrow(&self) -> &B {
&**self
}
}

/// A generalization of `Clone` to borrowed data.
///
/// Some types make it possible to go from borrowed to owned, usually by
Expand Down Expand Up @@ -192,6 +179,19 @@ where
Owned(#[stable(feature = "rust1", since = "1.0.0")] <B as ToOwned>::Owned),
}

// FIXME(inference): const bounds removed due to inference regressions found by crater;
// see https://github.com/rust-lang/rust/issues/147964
// #[rustc_const_unstable(feature = "const_convert", issue = "143773")]
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, B: ?Sized + ToOwned> Borrow<B> for Cow<'a, B>
// where
// B::Owned: [const] Borrow<B>,
{
fn borrow(&self) -> &B {
&**self
}
}

#[stable(feature = "rust1", since = "1.0.0")]
impl<B: ?Sized + ToOwned> Clone for Cow<'_, B> {
fn clone(&self) -> Self {
Expand Down
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