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Rollup merge of #155054 - Lars-Schumann:const-vec-ops, r=dtolnay

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constify `Index(Mut)`, `Deref(Mut)` for `Vec`

Relevant tracking issues
const_convert: https://github.com/rust-lang/rust/issues/143773
const_index: https://github.com/rust-lang/rust/issues/143775
This commit is contained in:
Jonathan Brouwer
2026-04-20 08:14:09 +02:00
committed by GitHub
parent e22c616e4e 804f4953d2
commit ce91732a75
4 changed files with 16 additions and 20 deletions
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library/alloc/src/lib.rs
+1
View File
@@ -106,6 +106,7 @@
#![feature(const_destruct)]
#![feature(const_eval_select)]
#![feature(const_heap)]
#![feature(const_index)]
#![feature(const_option_ops)]
#![feature(const_try)]
#![feature(copied_into_inner)]
library/alloc/src/vec/mod.rs
+8 -4
View File
@@ -3747,7 +3747,8 @@ unsafe fn spec_extend_from_within(&mut self, src: Range<usize>) {
////////////////////////////////////////////////////////////////////////////////
#[stable(feature = "rust1", since = "1.0.0")]
impl<T, A: Allocator> ops::Deref for Vec<T, A> {
#[rustc_const_unstable(feature = "const_convert", issue = "143773")]
impl<T, A: Allocator> const ops::Deref for Vec<T, A> {
type Target = [T];
#[inline]
@@ -3757,7 +3758,8 @@ fn deref(&self) -> &[T] {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T, A: Allocator> ops::DerefMut for Vec<T, A> {
#[rustc_const_unstable(feature = "const_convert", issue = "143773")]
impl<T, A: Allocator> const ops::DerefMut for Vec<T, A> {
#[inline]
fn deref_mut(&mut self) -> &mut [T] {
self.as_mut_slice()
@@ -3822,7 +3824,8 @@ fn hash<H: Hasher>(&self, state: &mut H) {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T, I: SliceIndex<[T]>, A: Allocator> Index<I> for Vec<T, A> {
#[rustc_const_unstable(feature = "const_index", issue = "143775")]
impl<T, I: [const] SliceIndex<[T]>, A: Allocator> const Index<I> for Vec<T, A> {
type Output = I::Output;
#[inline]
@@ -3832,7 +3835,8 @@ fn index(&self, index: I) -> &Self::Output {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T, I: SliceIndex<[T]>, A: Allocator> IndexMut<I> for Vec<T, A> {
#[rustc_const_unstable(feature = "const_index", issue = "143775")]
impl<T, I: [const] SliceIndex<[T]>, A: Allocator> const IndexMut<I> for Vec<T, A> {
#[inline]
fn index_mut(&mut self, index: I) -> &mut Self::Output {
IndexMut::index_mut(&mut **self, index)