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Rollup merge of #99317 - yanchith:borrow-vec-ta-as-slice-t, r=Mark-Simulacrum

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Borrow Vec<T, A> as [T]

Hello all,

When `Vec` was parametrized with `A`, the `Borrow` impls were omitted and currently `Vec<T, A>` can't be borrowed as `[T]`. This PR fixes that.

This was probably missed, because the `Borrow` impls are in a different file - `src/alloc/slice.rs`.

We briefly discussed this here: https://github.com/rust-lang/wg-allocators/issues/96 and I was told to go ahead and make a PR :)

I tested this by building the toolchain and building my code that needed the `Borrow` impl against it, but let me know if I should add any tests to this PR.
This commit is contained in:
Matthias Krüger 2022-07-16 22:30:54 +02:00 committed by GitHub
commit ddc32d1633
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4
library/alloc/src/slice.rs
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@ -836,14 +836,14 @@ impl<T: Clone, V: Borrow<[T]>> Join<&[T]> for [V] {
////////////////////////////////////////////////////////////////////////////////
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Borrow<[T]> for Vec<T> {
impl<T, A: Allocator> Borrow<[T]> for Vec<T, A> {
fn borrow(&self) -> &[T] {
&self[..]
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> BorrowMut<[T]> for Vec<T> {
impl<T, A: Allocator> BorrowMut<[T]> for Vec<T, A> {
fn borrow_mut(&mut self) -> &mut [T] {
&mut self[..]
}