Rollup of 8 pull requests #129663
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Rollup of 8 pull requests #129663
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A partial stabilization that only affects: - AllocType<T>::new_uninit - AllocType<T>::assume_init - AllocType<[T]>::new_uninit_slice - AllocType<[T]>::assume_init where "AllocType" is Box, Rc, or Arc
Plus a tiny bit of reformatting.
…ion-of-stabilization, r=dtolnay Partially stabilize `feature(new_uninit)` Finished comment period: rust-lang#63291 (comment) The following API has been stabilized from rust-lang#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`: rust-lang#129396 - `box_uninit_write`: rust-lang#129397 All relevant code is thus either stabilized or split out of that issue, so this closes rust-lang#63291 as, with the FCP concluded, that issue has served its purpose. try-job: x86_64-rust-for-linux
exit: explain our expectations for the exit handlers registered in a Rust program This documents the position of `@Amanieu` and others in rust-lang#126600: a library with an atexit handler that destroys state that other threads could still be working on is buggy. We do not consider it acceptable for a library to say "you must call the following cleanup function before exiting from `main` or calling `exit`". I don't know if this is established `@rust-lang/libs-api` consensus so I presume this will have to go through FCP. Given that Rust supports concurrency, I don't think there is any way to write a sound Rust wrapper around a library that has such a required cleanup function: even if we made `exit` unsafe, and the Rust wrapper used the scope-with-callback approach to ensure it can run cleanup code before returning from the wrapper (like `thread::scope`), one could still call this wrapper in a second thread and then return from `main` while the wrapper runs. Making this sound would require `std` to provide a way to "block" returning from `main`, so that while the wrapper runs returning from `main` waits until the wrapper is done... that just doesn't seem feasible. The `exit` docs do not seem like the best place to document this, but I also couldn't think of a better one.
…tlarsan68 Fix tidy to allow `edition = "2024"` in `Cargo.toml` Needed to upgrade to edition 2024 eventually.
…pastorino Use unsafe extern blocks throughout the compiler Making this change in preparation for edition 2024. r? spastorino
Fix typos in floating-point primitive type docs Fixes a few typos. Also reflows the text of a couple of paragraphs in the source code to the standard line width to make the source easier to read (will have no effect on the rendered documentation).
…rgau More `unreachable_pub` Add `unreachable_pub` checking to some more compiler crates. A follow-up to rust-lang#126013. r? `@Urgau`
…r=petrochenkov ABI compat check: detect unadjusted ABI mismatches
fix Pointer to reference conversion docs The aliasing rules documented in rust-lang#128157 are wrong, this fixes them.
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…iaskrgr Rollup of 8 pull requests Successful merges: - rust-lang#129401 (Partially stabilize `feature(new_uninit)`) - rust-lang#129581 (exit: explain our expectations for the exit handlers registered in a Rust program) - rust-lang#129634 (Fix tidy to allow `edition = "2024"` in `Cargo.toml`) - rust-lang#129635 (Use unsafe extern blocks throughout the compiler) - rust-lang#129645 (Fix typos in floating-point primitive type docs) - rust-lang#129648 (More `unreachable_pub`) - rust-lang#129649 (ABI compat check: detect unadjusted ABI mismatches) - rust-lang#129652 (fix Pointer to reference conversion docs) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
feature(new_uninit)#129401 (Partially stabilizefeature(new_uninit))edition = "2024"inCargo.toml#129634 (Fix tidy to allowedition = "2024"inCargo.toml)unreachable_pub#129648 (Moreunreachable_pub)r? @ghost
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