rust/compiler/rustc_span
Jubilee 9d5f794312
Rollup merge of #129401 - workingjubilee:partial-initialization-of-stabilization, r=dtolnay,joboet
Partially stabilize `feature(new_uninit)`

Finished comment period: https://github.com/rust-lang/rust/issues/63291#issuecomment-2183022955

The following API has been stabilized from https://github.com/rust-lang/rust/issues/63291

```rust
impl<T> Box<T> { pub fn new_uninit() -> Box<MaybeUninit<T>> {…} }
impl<T> Rc<T> { pub fn new_uninit() -> Rc<MaybeUninit<T>> {…} }
impl<T> Arc<T> { pub fn new_uninit() -> Arc<MaybeUninit<T>> {…} }

impl<T> Box<[T]> { pub fn new_uninit_slice(len: usize) -> Box<[MaybeUninit<T>]> {…} }
impl<T> Rc<[T]> { pub fn new_uninit_slice(len: usize) -> Rc<[MaybeUninit<T>]> {…} }
impl<T> Arc<[T]> { pub fn new_uninit_slice(len: usize) -> Arc<[MaybeUninit<T>]> {…} }

impl<T> Box<MaybeUninit<T>> { pub unsafe fn assume_init(self) -> Box<T> {…} }
impl<T> Box<[MaybeUninit<T>]> { pub unsafe fn assume_init(self) -> Box<[T]> {…} }
impl<T> Rc<MaybeUninit<T>> { pub unsafe fn assume_init(self) -> Rc<T> {…} }
impl<T> Rc<[MaybeUninit<T>]> { pub unsafe fn assume_init(self) -> Rc<[T]> {…} }
impl<T> Arc<MaybeUninit<T>> { pub unsafe fn assume_init(self) -> Arc<T> {…} }
impl<T> Arc<[MaybeUninit<T>]> { pub unsafe fn assume_init(self) -> Arc<[T]> {…} }
```

The remaining API is split between new issues
- `new_zeroed_alloc`: https://github.com/rust-lang/rust/issues/129396
- `box_uninit_write`: https://github.com/rust-lang/rust/issues/129397

All relevant code is thus either stabilized or split out of that issue, so this closes #63291 as, with the FCP concluded, that issue has served its purpose.

try-job: x86_64-rust-for-linux
2024-08-28 19:12:52 -07:00
..
src Rollup merge of #129401 - workingjubilee:partial-initialization-of-stabilization, r=dtolnay,joboet 2024-08-28 19:12:52 -07:00
Cargo.toml rustc_span: derivative -> derive-where 2024-07-12 21:37:43 +03:00