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Revert inference failure from Deref/Borrow constification

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(cherry picked from commit ebd5bea84f)
This commit is contained in:
ltdk
2025-10-23 03:22:56 -04:00
committed by Josh Stone
parent b6d30faa79
commit 566809897f
1 changed files with 12 additions and 9 deletions
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library/alloc/src/borrow.rs
+12 -9
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@@ -16,12 +16,13 @@
#[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")]
#[rustc_const_unstable(feature = "const_convert", issue = "143773")]
impl<'a, B: ?Sized> const Borrow<B> for Cow<'a, B>
where
B: ToOwned,
B::Owned: [const] Borrow<B>,
impl<'a, B: ?Sized + ToOwned> Borrow<B> for Cow<'a, B>
// where
// B::Owned: [const] Borrow<B>,
{
fn borrow(&self) -> &B {
&**self
@@ -327,11 +328,13 @@ pub fn into_owned(self) -> <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")]
#[rustc_const_unstable(feature = "const_convert", issue = "143773")]
impl<B: ?Sized + ToOwned> const Deref for Cow<'_, B>
where
B::Owned: [const] Borrow<B>,
impl<B: ?Sized + ToOwned> Deref for Cow<'_, B>
// where
// B::Owned: [const] Borrow<B>,
{
type Target = B;