------------------------------------------------------------------- Mon Jul 17 02:20:27 UTC 2023 - William Brown Version 1.71.0 (2023-07-13) ========================== Language -------- - [Stabilize `raw-dylib`, `link_ordinal`, `import_name_type` and `-Cdlltool`.](https://github.com/rust-lang/rust/pull/109677/) - [Uplift `clippy::{drop,forget}_{ref,copy}` lints.](https://github.com/rust-lang/rust/pull/109732/) - [Type inference is more conservative around constrained vars.](https://github.com/rust-lang/rust/pull/110100/) - [Use fulfillment to check `Drop` impl compatibility](https://github.com/rust-lang/rust/pull/110577/) Compiler -------- - [Evaluate place expression in `PlaceMention`](https://github.com/rust-lang/rust/pull/104844/), making `let _ =` patterns more consistent with respect to the borrow checker. - [Add `--print deployment-target` flag for Apple targets.](https://github.com/rust-lang/rust/pull/105354/) - [Stabilize `extern "C-unwind"` and friends.](https://github.com/rust-lang/rust/pull/106075/) The existing `extern "C"` etc. may change behavior for cross-language unwinding in a future release. - [Update the version of musl used on `*-linux-musl` targets to 1.2.3](https://github.com/rust-lang/rust/pull/107129/), enabling [time64](https://musl.libc.org/time64.html) on 32-bit systems. - [Stabilize `debugger_visualizer`](https://github.com/rust-lang/rust/pull/108668/) for embedding metadata like Microsoft's Natvis. - [Enable flatten-format-args by default.](https://github.com/rust-lang/rust/pull/109999/) - [Make `Self` respect tuple constructor privacy.](https://github.com/rust-lang/rust/pull/111245/) - [Improve niche placement by trying two strategies and picking the better result.](https://github.com/rust-lang/rust/pull/108106/) - [Use `apple-m1` as the target CPU for `aarch64-apple-darwin`.](https://github.com/rust-lang/rust/pull/109899/) - [Add Tier 3 support for the `x86_64h-apple-darwin` target.](https://github.com/rust-lang/rust/pull/108795/) - [Promote `loongarch64-unknown-linux-gnu` to Tier 2 with host tools.](https://github.com/rust-lang/rust/pull/110936/) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - [Rework handling of recursive panics.](https://github.com/rust-lang/rust/pull/110975/) Additional panics are allowed while unwinding, as long as they are caught before escaping a `Drop` implementation, but panicking within a panic hook is now an immediate abort. - [Loosen `From<&[T]> for Box<[T]>` bound to `T: Clone`.](https://github.com/rust-lang/rust/pull/103406/) - [Remove unnecessary `T: Send` bound](https://github.com/rust-lang/rust/pull/111134/) in `Error for mpsc::SendError` and `TrySendError`. - [Fix docs for `alloc::realloc`](https://github.com/rust-lang/rust/pull/108630/) to match `Layout` requirements that the size must not exceed `isize::MAX`. - [Document `const {}` syntax for `std::thread_local`.](https://github.com/rust-lang/rust/pull/110620/) This syntax was stabilized in Rust 1.59, but not previously mentioned in release notes. Stabilized APIs --------------- - [`CStr::is_empty`](https://doc.rust-lang.org/stable/std/ffi/struct.CStr.html#method.is_empty) - [`BuildHasher::hash_one`](https://doc.rust-lang.org/stable/std/hash/trait.BuildHasher.html#method.hash_one) - [`NonZeroI*::is_positive`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.is_positive) - [`NonZeroI*::is_negative`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.is_negative) - [`NonZeroI*::checked_neg`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.checked_neg) - [`NonZeroI*::overflowing_neg`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.overflowing_neg) - [`NonZeroI*::saturating_neg`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.saturating_neg) - [`NonZeroI*::wrapping_neg`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#method.wrapping_neg) - [`Neg for NonZeroI*`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#impl-Neg-for-NonZeroI32) - [`Neg for &NonZeroI*`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroI32.html#impl-Neg-for-%26NonZeroI32) - [`From<[T; N]> for (T...)`](https://doc.rust-lang.org/stable/std/primitive.array.html#impl-From%3C%5BT;+1%5D%3E-for-(T,)) (array to N-tuple for N in 1..=12) - [`From<(T...)> for [T; N]`](https://doc.rust-lang.org/stable/std/primitive.array.html#impl-From%3C(T,)%3E-for-%5BT;+1%5D) (N-tuple to array for N in 1..=12) - [`windows::io::AsHandle for Box`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsHandle.html#impl-AsHandle-for-Box%3CT%3E) - [`windows::io::AsHandle for Rc`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsHandle.html#impl-AsHandle-for-Rc%3CT%3E) - [`windows::io::AsHandle for Arc`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsHandle.html#impl-AsHandle-for-Arc%3CT%3E) - [`windows::io::AsSocket for Box`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsSocket.html#impl-AsSocket-for-Box%3CT%3E) - [`windows::io::AsSocket for Rc`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsSocket.html#impl-AsSocket-for-Rc%3CT%3E) - [`windows::io::AsSocket for Arc`](https://doc.rust-lang.org/stable/std/os/windows/io/trait.AsSocket.html#impl-AsSocket-for-Arc%3CT%3E) These APIs are now stable in const contexts: - [`<*const T>::read`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.read) - [`<*const T>::read_unaligned`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.read_unaligned) - [`<*mut T>::read`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.read-1) - [`<*mut T>::read_unaligned`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.read_unaligned-1) - [`ptr::read`](https://doc.rust-lang.org/stable/std/ptr/fn.read.html) - [`ptr::read_unaligned`](https://doc.rust-lang.org/stable/std/ptr/fn.read_unaligned.html) - [`<[T]>::split_at`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.split_at) Cargo ----- - [Allow named debuginfo options in `Cargo.toml`.](https://github.com/rust-lang/cargo/pull/11958/) - [Add `workspace_default_members` to the output of `cargo metadata`.](https://github.com/rust-lang/cargo/pull/11978/) - [`cargo add` now considers `rust-version` when selecting packages.](https://github.com/rust-lang/cargo/pull/12078/) - [Automatically inherit workspace fields when running `cargo new`/`cargo init`.](https://github.com/rust-lang/cargo/pull/12069/) Rustdoc ------- - [Add a new `rustdoc::unescaped_backticks` lint for broken inline code.](https://github.com/rust-lang/rust/pull/105848/) - [Support strikethrough with single tildes.](https://github.com/rust-lang/rust/pull/111152/) (`~~old~~` vs. `~new~`) Misc ---- Compatibility Notes ------------------- - [Remove structural match from `TypeId`.](https://github.com/rust-lang/rust/pull/103291/) Code that uses a constant `TypeId` in a pattern will potentially be broken. Known cases have already been fixed -- in particular, users of the `log` crate's `kv_unstable` feature should update to `log v0.4.18` or later. - [Add a `sysroot` crate to represent the standard library crates.](https://github.com/rust-lang/rust/pull/108865/) This does not affect stable users, but may require adjustment in tools that build their own standard library. - [Cargo optimizes its usage under `rustup`.](https://github.com/rust-lang/cargo/pull/11917/) When Cargo detects it will run `rustc` pointing to a rustup proxy, it'll try bypassing the proxy and use the underlying binary directly. There are assumptions around the interaction with rustup and `RUSTUP_TOOLCHAIN`. However, it's not expected to affect normal users. - [When querying a package, Cargo tries only the original name, all hyphens, and all underscores to handle misspellings.](https://github.com/rust-lang/cargo/pull/12083/) Previously, Cargo tried each combination of hyphens and underscores, causing excessive requests to crates.io. - Cargo now [disallows `RUSTUP_HOME`](https://github.com/rust-lang/cargo/pull/12101/) and [`RUSTUP_TOOLCHAIN`](https://github.com/rust-lang/cargo/pull/12107/) in the `[env]` configuration table. This is considered to be not a use case Cargo would like to support, since it will likely cause problems or lead to confusion.