|
| 1 | +Version 1.79.0 (2024-06-13) |
| 2 | +========================== |
| 3 | + |
| 4 | +<a id="1.79.0-Language"></a> |
| 5 | + |
| 6 | +Language |
| 7 | +-------- |
| 8 | +- [Stabilize inline `const {}` expressions.](https://github.com/rust-lang/rust/pull/104087/) |
| 9 | +- [Prevent opaque types being instantiated twice with different regions within the same function.](https://github.com/rust-lang/rust/pull/116935/) |
| 10 | +- [Stabilize WebAssembly target features that are in phase 4 and 5.](https://github.com/rust-lang/rust/pull/117457/) |
| 11 | +- [Add the `redundant_lifetimes` lint to detect lifetimes which are semantically redundant.](https://github.com/rust-lang/rust/pull/118391/) |
| 12 | +- [Stabilize the `unnameable_types` lint for public types that can't be named.](https://github.com/rust-lang/rust/pull/120144/) |
| 13 | +- [Enable debuginfo in macros, and stabilize `-C collapse-macro-debuginfo` and `#[collapse_debuginfo]`.](https://github.com/rust-lang/rust/pull/120845/) |
| 14 | +- [Propagate temporary lifetime extension into `if` and `match` expressions.](https://github.com/rust-lang/rust/pull/121346/) |
| 15 | +- [Restrict promotion of `const fn` calls.](https://github.com/rust-lang/rust/pull/121557/) |
| 16 | +- [Warn against refining impls of crate-private traits with `refining_impl_trait` lint.](https://github.com/rust-lang/rust/pull/121720/) |
| 17 | +- [Stabilize associated type bounds (RFC 2289).](https://github.com/rust-lang/rust/pull/122055/) |
| 18 | +- [Stabilize importing `main` from other modules or crates.](https://github.com/rust-lang/rust/pull/122060/) |
| 19 | +- [Check return types of function types for well-formedness](https://github.com/rust-lang/rust/pull/115538) |
| 20 | +- [Rework `impl Trait` lifetime inference](https://github.com/rust-lang/rust/pull/116891/) |
| 21 | +- [Change inductive trait solver cycles to be ambiguous](https://github.com/rust-lang/rust/pull/122791) |
| 22 | + |
| 23 | +<a id="1.79.0-Compiler"></a> |
| 24 | + |
| 25 | +Compiler |
| 26 | +-------- |
| 27 | +- [Define `-C strip` to only affect binaries, not artifacts like `.pdb`.](https://github.com/rust-lang/rust/pull/115120/) |
| 28 | +- [Stabilize `-Crelro-level` for controlling runtime link hardening.](https://github.com/rust-lang/rust/pull/121694/) |
| 29 | +- [Stabilize checking of `cfg` names and values at compile-time with `--check-cfg`.](https://github.com/rust-lang/rust/pull/123501/) |
| 30 | + *Note that this only stabilizes the compiler part, the Cargo part is still unstable in this release.* |
| 31 | +- [Add `aarch64-apple-visionos` and `aarch64-apple-visionos-sim` tier 3 targets.](https://github.com/rust-lang/rust/pull/121419/) |
| 32 | +- [Add `riscv32ima-unknown-none-elf` tier 3 target.](https://github.com/rust-lang/rust/pull/122696/) |
| 33 | +- [Promote several Windows targets to tier 2](https://github.com/rust-lang/rust/pull/121712): `aarch64-pc-windows-gnullvm`, `i686-pc-windows-gnullvm`, and `x86_64-pc-windows-gnullvm`. |
| 34 | + |
| 35 | +Refer to Rust's [platform support page][platform-support-doc] |
| 36 | +for more information on Rust's tiered platform support. |
| 37 | + |
| 38 | +<a id="1.79.0-Libraries"></a> |
| 39 | + |
| 40 | +Libraries |
| 41 | +--------- |
| 42 | + |
| 43 | +- [Implement `FromIterator` for `(impl Default + Extend, impl Default + Extend)`.](https://github.com/rust-lang/rust/pull/107462/) |
| 44 | +- [Implement `{Div,Rem}Assign<NonZero<X>>` on `X`.](https://github.com/rust-lang/rust/pull/121952/) |
| 45 | +- [Document overrides of `clone_from()` in core/std.](https://github.com/rust-lang/rust/pull/122201/) |
| 46 | +- [Link MSVC default lib in core.](https://github.com/rust-lang/rust/pull/122268/) |
| 47 | +- [Caution against using `transmute` between pointers and integers.](https://github.com/rust-lang/rust/pull/122379/) |
| 48 | +- [Enable frame pointers for the standard library.](https://github.com/rust-lang/rust/pull/122646/) |
| 49 | + |
| 50 | +<a id="1.79.0-Stabilized-APIs"></a> |
| 51 | + |
| 52 | +Stabilized APIs |
| 53 | +--------------- |
| 54 | + |
| 55 | +- [`{integer}::unchecked_add`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_add) |
| 56 | +- [`{integer}::unchecked_mul`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_mul) |
| 57 | +- [`{integer}::unchecked_sub`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.unchecked_sub) |
| 58 | +- [`<[T]>::split_at_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_unchecked) |
| 59 | +- [`<[T]>::split_at_mut_unchecked`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.split_at_mut_unchecked) |
| 60 | +- [`<[u8]>::utf8_chunks`](https://doc.rust-lang.org/stable/core/primitive.slice.html#method.utf8_chunks) |
| 61 | +- [`str::Utf8Chunks`](https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunks.html) |
| 62 | +- [`str::Utf8Chunk`](https://doc.rust-lang.org/stable/core/str/struct.Utf8Chunk.html) |
| 63 | +- [`<*const T>::is_aligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned) |
| 64 | +- [`<*mut T>::is_aligned`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_aligned-1) |
| 65 | +- [`NonNull::is_aligned`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_aligned) |
| 66 | +- [`<*const [T]>::len`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len) |
| 67 | +- [`<*mut [T]>::len`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.len-1) |
| 68 | +- [`<*const [T]>::is_empty`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty) |
| 69 | +- [`<*mut [T]>::is_empty`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_empty-1) |
| 70 | +- [`NonNull::<[T]>::is_empty`](https://doc.rust-lang.org/stable/core/ptr/struct.NonNull.html#method.is_empty) |
| 71 | +- [`CStr::count_bytes`](https://doc.rust-lang.org/stable/core/ffi/c_str/struct.CStr.html#method.count_bytes) |
| 72 | +- [`io::Error::downcast`](https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.downcast) |
| 73 | +- [`num::NonZero<T>`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html) |
| 74 | +- [`path::absolute`](https://doc.rust-lang.org/stable/std/path/fn.absolute.html) |
| 75 | +- [`proc_macro::Literal::byte_character`](https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.byte_character) |
| 76 | +- [`proc_macro::Literal::c_string`](https://doc.rust-lang.org/stable/proc_macro/struct.Literal.html#method.c_string) |
| 77 | + |
| 78 | +These APIs are now stable in const contexts: |
| 79 | + |
| 80 | +- [`Atomic*::into_inner`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.into_inner) |
| 81 | +- [`io::Cursor::new`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.new) |
| 82 | +- [`io::Cursor::get_ref`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.get_ref) |
| 83 | +- [`io::Cursor::position`](https://doc.rust-lang.org/stable/std/io/struct.Cursor.html#method.position) |
| 84 | +- [`io::empty`](https://doc.rust-lang.org/stable/std/io/fn.empty.html) |
| 85 | +- [`io::repeat`](https://doc.rust-lang.org/stable/std/io/fn.repeat.html) |
| 86 | +- [`io::sink`](https://doc.rust-lang.org/stable/std/io/fn.sink.html) |
| 87 | +- [`panic::Location::caller`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.caller) |
| 88 | +- [`panic::Location::file`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.file) |
| 89 | +- [`panic::Location::line`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.line) |
| 90 | +- [`panic::Location::column`](https://doc.rust-lang.org/stable/std/panic/struct.Location.html#method.column) |
| 91 | + |
| 92 | +<a id="1.79.0-Cargo"></a> |
| 93 | + |
| 94 | +Cargo |
| 95 | +----- |
| 96 | + |
| 97 | +- [Prevent dashes in `lib.name`, always normalizing to `_`.](https://github.com/rust-lang/cargo/pull/12783/) |
| 98 | +- [Stabilize MSRV-aware version requirement selection in `cargo add`.](https://github.com/rust-lang/cargo/pull/13608/) |
| 99 | +- [Switch to using `gitoxide` by default for listing files.](https://github.com/rust-lang/cargo/pull/13696/) |
| 100 | +- [Error on `[project]` in Edition 2024; `cargo fix --edition` will change it to `[package]`.](https://github.com/rust-lang/cargo/pull/13747/) |
| 101 | + |
| 102 | +<a id="1.79.0-Rustdoc"></a> |
| 103 | + |
| 104 | +Rustdoc |
| 105 | +----- |
| 106 | + |
| 107 | +- [Always display stability version even if it's the same as the containing item.](https://github.com/rust-lang/rust/pull/118441/) |
| 108 | +- [Show a single search result for items with multiple paths.](https://github.com/rust-lang/rust/pull/119912/) |
| 109 | +- [Support typing `/` in docs to begin a search.](https://github.com/rust-lang/rust/pull/123355/) |
| 110 | + |
| 111 | +<a id="1.79.0-Misc"></a> |
| 112 | + |
| 113 | +Misc |
| 114 | +---- |
| 115 | + |
| 116 | +<a id="1.79.0-Compatibility-Notes"></a> |
| 117 | + |
| 118 | +Compatibility Notes |
| 119 | +------------------- |
| 120 | + |
| 121 | +- [Update the minimum external LLVM to 17.](https://github.com/rust-lang/rust/pull/122649/) |
| 122 | +- [`RustcEncodable` and `RustcDecodable` are soft-destabilized, to be removed |
| 123 | + from the prelude in next edition.](https://github.com/rust-lang/rust/pull/116016/) |
| 124 | +- [The `wasm_c_abi` future-incompatibility lint will warn about use of the |
| 125 | + non-spec-compliant C ABI.](https://github.com/rust-lang/rust/pull/117918/) |
| 126 | + Use `wasm-bindgen v0.2.88` to generate forward-compatible bindings. |
| 127 | +- [Check return types of function types for well-formedness](https://github.com/rust-lang/rust/pull/115538) |
| 128 | + |
1 | 129 | Version 1.78.0 (2024-05-02)
|
2 | 130 | ==========================
|
3 | 131 |
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@@ -102,6 +230,10 @@ Compatibility Notes
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102 | 230 | - [Change equality of higher ranked types to not rely on subtyping](https://github.com/rust-lang/rust/pull/118247)
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103 | 231 | - [When called, additionally check bounds on normalized function return type](https://github.com/rust-lang/rust/pull/118882)
|
104 | 232 | - [Expand coverage for `arithmetic_overflow` lint](https://github.com/rust-lang/rust/pull/119432/)
|
| 233 | +- [Fix detection of potential interior mutability in `const` initializers](https://github.com/rust-lang/rust/issues/121250) |
| 234 | + This code was accidentally accepted. The fix can break generic code that borrows a value of unknown type, |
| 235 | + as there is currently no way to declare "this type has no interior mutability". In the future, stabilizing |
| 236 | + the [`Freeze` trait](https://github.com/rust-lang/rust/issues/121675) will allow proper support for such code. |
105 | 237 |
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106 | 238 | <a id="1.78.0-Internal-Changes"></a>
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107 | 239 |
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