Release notes for 1.84.0 #134568
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| Version 1.84.0 (2025-01-09) | ||
| ========================== | ||
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| <a id=" | ||
| Language"></a> | ||
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| Language | ||
| -------- | ||
| - [Allow `#[deny]` inside `#[forbid]` as a no-op](https://github.com/rust-lang/rust/pull/121560/) | ||
| - [Show a warning when `-Ctarget-feature` is used to toggle features that can lead to unsoundness due to ABI mismatches](https://github.com/rust-lang/rust/pull/129884) | ||
| - [Use the next-generation trait solver in coherence](https://github.com/rust-lang/rust/pull/130654) | ||
| - [Allow coercions to drop the principal of trait objects](https://github.com/rust-lang/rust/pull/131857) | ||
| - [Support `/` as the path separator for `include!()` in all cases on Windows](https://github.com/rust-lang/rust/pull/125205) | ||
| - [Taking a raw ref (`raw (const|mut)`) of a deref of a pointer (`*ptr`) is now safe](https://github.com/rust-lang/rust/pull/129248) | ||
| - [Stabilize s390x inline assembly](https://github.com/rust-lang/rust/pull/131258) | ||
| - [Stabilize Arm64EC inline assembly](https://github.com/rust-lang/rust/pull/131781) | ||
| - [Lint against creating pointers to immediately dropped temporaries](https://github.com/rust-lang/rust/pull/128985) | ||
| - [Execute drop glue when unwinding in an `extern "C"` function](https://github.com/rust-lang/rust/pull/129582) | ||
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| <a id="1.84.0-Compiler"></a> | ||
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| Compiler | ||
| -------- | ||
| - [Add `--print host-tuple` flag to print the host target tuple and affirm the "target tuple" terminology over "target triple"](https://github.com/rust-lang/rust/pull/125579) | ||
| - [Declaring functions with a calling convention not supported on the current target now triggers a hard error](https://github.com/rust-lang/rust/pull/129935) | ||
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| - [Set up indirect access to external data for `loongarch64-unknown-linux-{musl,ohos}`](https://github.com/rust-lang/rust/pull/131583) | ||
| - [Enable XRay instrumentation for LoongArch Linux targets](https://github.com/rust-lang/rust/pull/131818) | ||
| - [Extend the `unexpected_cfgs` lint to also warn in external macros](https://github.com/rust-lang/rust/pull/132577) | ||
| - [Stabilize WebAssembly `multivalue`, `reference-types`, and `tail-call` target features](https://github.com/rust-lang/rust/pull/131080) | ||
| - [Added Tier 2 support for the `wasm32v1-none` target](https://github.com/rust-lang/rust/pull/131487) | ||
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| <a id="1.84.0-Libraries"></a> | ||
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| Libraries | ||
| --------- | ||
| - [Implement `From<&mut {slice}>` for `Box/Rc/Arc<{slice}>`](https://github.com/rust-lang/rust/pull/129329) | ||
| - [Move `<float>::copysign`, `<float>::abs`, `<float>::signum` to `core`](https://github.com/rust-lang/rust/pull/131304) | ||
| - [Add `LowerExp` and `UpperExp` implementations to `NonZero`](https://github.com/rust-lang/rust/pull/131377) | ||
| - [Implement `FromStr` for `CString` and `TryFrom<CString>` for `String`](https://github.com/rust-lang/rust/pull/130608) | ||
| - [`std::os::darwin` has been made public](https://github.com/rust-lang/rust/pull/130635) | ||
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There was a problem hiding this comment. wrong PR linked, it should be #123723 instead There was a problem hiding this comment. Opened #135252 with the fix. Unfortunately we already built the stable release (in preparation for the release tomorrow), and unless a critical bug happens (requiring a rebuild) the relnotes packaged with the stable release will not include the fix. There was a problem hiding this comment.
I found it while looking at https://releases.rs page. will be fixed included for it? There was a problem hiding this comment. That website is not maintained by the Rust project, I have no insights on what it takes for the changes to be reflected there. |
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| <a id="1.84.0-Stabilized-APIs"></a> | ||
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| Stabilized APIs | ||
| --------------- | ||
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| - [`Ipv6Addr::is_unique_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unique_local) | ||
| - [`Ipv6Addr::is_unicast_link_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unicast_link_local) | ||
| - [`core::ptr::with_exposed_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance.html) | ||
| - [`core::ptr::with_exposed_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance_mut.html) | ||
| - [`<ptr>::addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.addr) | ||
| - [`<ptr>::expose_provenance`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.expose_provenance) | ||
| - [`<ptr>::with_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.with_addr) | ||
| - [`<ptr>::map_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.map_addr) | ||
| - [`<int>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.isqrt) | ||
| - [`<int>::checked_isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.checked_isqrt) | ||
| - [`<uint>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.u32.html#method.isqrt) | ||
| - [`NonZero::isqrt`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html#impl-NonZero%3Cu128%3E/method.isqrt) | ||
| - [`core::ptr::without_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance.html) | ||
| - [`core::ptr::without_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance_mut.html) | ||
| - [`core::ptr::dangling`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling.html) | ||
| - [`core::ptr::dangling_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling_mut.html) | ||
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| These APIs are now stable in const contexts | ||
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| - [`AtomicBool::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicBool.html#method.from_ptr) | ||
| - [`AtomicPtr::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicPtr.html#method.from_ptr) | ||
| - [`AtomicU8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU8.html#method.from_ptr) | ||
| - [`AtomicU16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU16.html#method.from_ptr) | ||
| - [`AtomicU32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU32.html#method.from_ptr) | ||
| - [`AtomicU64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU64.html#method.from_ptr) | ||
| - [`AtomicUsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.from_ptr) | ||
| - [`AtomicI8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI8.html#method.from_ptr) | ||
| - [`AtomicI16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI16.html#method.from_ptr) | ||
| - [`AtomicI32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI32.html#method.from_ptr) | ||
| - [`AtomicI64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI64.html#method.from_ptr) | ||
| - [`AtomicIsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicIsize.html#method.from_ptr) | ||
| - [`<ptr>::is_null`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_null-1) | ||
| - [`<ptr>::as_ref`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_ref-1) | ||
| - [`<ptr>::as_mut`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_mut) | ||
| - [`Pin::new`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new) | ||
| - [`Pin::new_unchecked`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new_unchecked) | ||
| - [`Pin::get_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_ref) | ||
| - [`Pin::into_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.into_ref) | ||
| - [`Pin::get_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_mut) | ||
| - [`Pin::get_unchecked_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_unchecked_mut) | ||
| - [`Pin::static_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_ref) | ||
| - [`Pin::static_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_mut) | ||
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| <a id="1.84.0-Cargo"></a> | ||
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| Cargo | ||
| ----- | ||
| - [Stabilize MSRV-aware resolver config](https://github.com/rust-lang/cargo/pull/14639/) | ||
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| - [Stabilize resolver v3](https://github.com/rust-lang/cargo/pull/14754/) | ||
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| <a id="1.84-Rustdoc"></a> | ||
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| Rustdoc | ||
| ------- | ||
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| - [rustdoc-search: improve type-driven search](https://github.com/rust-lang/rust/pull/127589) | ||
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| <a id="1.84.0-Compatibility-Notes"></a> | ||
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| Compatibility Notes | ||
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| ------------------- | ||
| - [Enable by default the `LSX` target feature for LoongArch Linux targets](https://github.com/rust-lang/rust/pull/132140) | ||
| - [The unstable `-Zprofile` flag (“gcov-style” coverage instrumentation) has been removed.](https://github.com/rust-lang/rust/pull/131829) This does not affect the stable flags for coverage instrumentation (`-Cinstrument-coverage`) and profile-guided optimization (`-Cprofile-generate`, `-Cprofile-use`), which are unrelated and remain available. | ||
| - Support for the target named `wasm32-wasi` has been removed as the target is now named `wasm32-wasip1`. This completes the [transition](https://github.com/rust-lang/compiler-team/issues/607) [plan](https://github.com/rust-lang/compiler-team/issues/695) for this target following [the introduction of `wasm32-wasip1`](https://github.com/rust-lang/rust/pull/120468) in Rust 1.78. Compiler warnings on [use of `wasm32-wasi`](https://github.com/rust-lang/rust/pull/126662) introduced in Rust 1.81 are now gone as well as the target is removed. | ||
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| - [The syntax `&pin (mut|const) T` is now parsed as a type which in theory could affect macro expansion results in some edge cases](https://github.com/rust-lang/rust/pull/130635#issuecomment-2375462821) | ||
| - [Legacy syntax for calling `std::arch` functions is no longer permitted to declare items or bodies (such as closures, inline consts, or async blocks).](https://github.com/rust-lang/rust/pull/130443#issuecomment-2445678945) | ||
| - The `wasm32-unknown-emscripten` target's binary release of the standard library is now [built with the latest emsdk 3.1.68](https://github.com/rust-lang/rust/pull/131533), which fixes an ABI-incompatibility with Emscripten >= 3.1.42. If you are locally using a version of emsdk with an incompatible ABI (e.g. before 3.1.42 or a future one), you should build your code with `-Zbuild-std` to ensure that `std` uses the correct ABI. | ||
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There was a problem hiding this comment. and again compat notes (i guess the anchor tag above was misplaced) There was a problem hiding this comment. According to this comment, the Emscripten version is still the same as before. There was a problem hiding this comment. @workingjubilee can you confirm whether this needs to be removed from relnotes? There was a problem hiding this comment. Jubilee is marked as on vacation. I opened a PR to remove this line: #135266 |
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| Version 1.83.0 (2024-11-28) | ||
| ========================== | ||
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