|
| 1 | +Version 1.66.0 (2022-12-15) |
| 2 | +========================== |
| 3 | + |
| 4 | +Language |
| 5 | +-------- |
| 6 | +- [Permit specifying explicit discriminants on all `repr(Int)` enums](https://github.com/rust-lang/rust/pull/95710/) |
| 7 | + ```rust |
| 8 | + #[repr(u8)] |
| 9 | + enum Foo { |
| 10 | + A(u8) = 0, |
| 11 | + B(i8) = 1, |
| 12 | + C(bool) = 42, |
| 13 | + } |
| 14 | + ``` |
| 15 | +- [Allow transmutes between the same type differing only in lifetimes](https://github.com/rust-lang/rust/pull/101520/) |
| 16 | +- [Change constant evaluation errors from a deny-by-default lint to a hard error](https://github.com/rust-lang/rust/pull/102091/) |
| 17 | +- [Trigger `must_use` on `impl Trait` for supertraits](https://github.com/rust-lang/rust/pull/102287/) |
| 18 | + This makes `impl ExactSizeIterator` respect the existing `#[must_use]` annotation on `Iterator`. |
| 19 | +- [Allow `..X` and `..=X` in patterns](https://github.com/rust-lang/rust/pull/102275/) |
| 20 | +- [Uplift `clippy::for_loops_over_fallibles` lint into rustc](https://github.com/rust-lang/rust/pull/99696/) |
| 21 | +- [Stabilize `sym` operands in inline assembly](https://github.com/rust-lang/rust/pull/103168/) |
| 22 | +- [Update to Unicode 15](https://github.com/rust-lang/rust/pull/101912/) |
| 23 | +- [Opaque types no longer imply lifetime bounds](https://github.com/rust-lang/rust/pull/95474/) |
| 24 | + This is a soundness fix which may break code that was erroneously relying on this behavior. |
| 25 | + |
| 26 | +Compiler |
| 27 | +-------- |
| 28 | +- [Add armv5te-none-eabi and thumbv5te-none-eabi tier 3 targets](https://github.com/rust-lang/rust/pull/101329/) |
| 29 | + - Refer to Rust's [platform support page][platform-support-doc] for more |
| 30 | + information on Rust's tiered platform support. |
| 31 | +- [Add support for linking against macOS universal libraries](https://github.com/rust-lang/rust/pull/98736) |
| 32 | + |
| 33 | +Libraries |
| 34 | +--------- |
| 35 | +- [Fix `#[derive(Default)]` on a generic `#[default]` enum adding unnecessary `Default` bounds](https://github.com/rust-lang/rust/pull/101040/) |
| 36 | +- [Update to Unicode 15](https://github.com/rust-lang/rust/pull/101821/) |
| 37 | + |
| 38 | +Stabilized APIs |
| 39 | +--------------- |
| 40 | + |
| 41 | +- [`proc_macro::Span::source_text`](https://doc.rust-lang.org/stable/proc_macro/struct.Span.html#method.source_text) |
| 42 | +- [`uX::{checked_add_signed, overflowing_add_signed, saturating_add_signed, wrapping_add_signed}`](https://doc.rust-lang.org/stable/std/primitive.u8.html#method.checked_add_signed) |
| 43 | +- [`iX::{checked_add_unsigned, overflowing_add_unsigned, saturating_add_unsigned, wrapping_add_unsigned}`](https://doc.rust-lang.org/stable/std/primitive.i8.html#method.checked_add_unsigned) |
| 44 | +- [`iX::{checked_sub_unsigned, overflowing_sub_unsigned, saturating_sub_unsigned, wrapping_sub_unsigned}`](https://doc.rust-lang.org/stable/std/primitive.i8.html#method.checked_sub_unsigned) |
| 45 | +- [`BTreeSet::{first, last, pop_first, pop_last}`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeSet.html#method.first) |
| 46 | +- [`BTreeMap::{first_key_value, last_key_value, first_entry, last_entry, pop_first, pop_last}`](https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.first_key_value) |
| 47 | +- [Add `AsFd` implementations for stdio lock types on WASI.](https://github.com/rust-lang/rust/pull/101768/) |
| 48 | +- [`impl TryFrom<Vec<T>> for Box<[T; N]>`](https://doc.rust-lang.org/stable/std/boxed/struct.Box.html#impl-TryFrom%3CVec%3CT%2C%20Global%3E%3E-for-Box%3C%5BT%3B%20N%5D%2C%20Global%3E) |
| 49 | +- [`core::hint::black_box`](https://doc.rust-lang.org/stable/std/hint/fn.black_box.html) |
| 50 | +- [`Duration::try_from_secs_{f32,f64}`](https://doc.rust-lang.org/stable/std/time/struct.Duration.html#method.try_from_secs_f32) |
| 51 | +- [`Option::unzip`](https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.unzip) |
| 52 | +- [`std::os::fd`](https://doc.rust-lang.org/stable/std/os/fd/index.html) |
| 53 | + |
| 54 | + |
| 55 | +Rustdoc |
| 56 | +------- |
| 57 | + |
| 58 | +- [Add Rustdoc warning for invalid HTML tags in the documentation](https://github.com/rust-lang/rust/pull/101720/) |
| 59 | + |
| 60 | +Cargo |
| 61 | +----- |
| 62 | + |
| 63 | +- [Added `cargo remove` to remove dependencies from Cargo.toml](https://doc.rust-lang.org/nightly/cargo/commands/cargo-remove.html) |
| 64 | +- [`cargo publish` now waits for the new version to be downloadable before exiting](https://github.com/rust-lang/cargo/pull/11062) |
| 65 | + |
| 66 | +See [detailed release notes](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md#cargo-166-2022-12-15) for more. |
| 67 | + |
| 68 | +Compatibility Notes |
| 69 | +------------------- |
| 70 | + |
| 71 | +- [Only apply `ProceduralMasquerade` hack to older versions of `rental`](https://github.com/rust-lang/rust/pull/94063/) |
| 72 | +- [Don't export `__heap_base` and `__data_end` on wasm32-wasi.](https://github.com/rust-lang/rust/pull/102385/) |
| 73 | +- [Don't export `__wasm_init_memory` on WebAssembly.](https://github.com/rust-lang/rust/pull/102426/) |
| 74 | +- [Only export `__tls_*` on wasm32-unknown-unknown.](https://github.com/rust-lang/rust/pull/102440/) |
| 75 | +- [Don't link to `libresolv` in libstd on Darwin](https://github.com/rust-lang/rust/pull/102766/) |
| 76 | +- [Update libstd's libc to 0.2.135 (to make `libstd` no longer pull in `libiconv.dylib` on Darwin)](https://github.com/rust-lang/rust/pull/103277/) |
| 77 | +- [Opaque types no longer imply lifetime bounds](https://github.com/rust-lang/rust/pull/95474/) |
| 78 | + This is a soundness fix which may break code that was erroneously relying on this behavior. |
| 79 | +- [Make `order_dependent_trait_objects` show up in future-breakage reports](https://github.com/rust-lang/rust/pull/102635/) |
| 80 | +- [Change std::process::Command spawning to default to inheriting the parent's signal mask](https://github.com/rust-lang/rust/pull/101077/) |
| 81 | + |
| 82 | +Internal Changes |
| 83 | +---------------- |
| 84 | + |
| 85 | +These changes do not affect any public interfaces of Rust, but they represent |
| 86 | +significant improvements to the performance or internals of rustc and related |
| 87 | +tools. |
| 88 | + |
| 89 | +- [Enable BOLT for LLVM compilation](https://github.com/rust-lang/rust/pull/94381/) |
| 90 | +- [Enable LTO for rustc_driver.so](https://github.com/rust-lang/rust/pull/101403/) |
| 91 | + |
| 92 | +Version 1.65.0 (2022-11-03) |
| 93 | +========================== |
| 94 | + |
| 95 | +Language |
| 96 | +-------- |
| 97 | +- [Error on `as` casts of enums with `#[non_exhaustive]` variants](https://github.com/rust-lang/rust/pull/92744/) |
| 98 | +- [Stabilize `let else`](https://github.com/rust-lang/rust/pull/93628/) |
| 99 | +- [Stabilize generic associated types (GATs)](https://github.com/rust-lang/rust/pull/96709/) |
| 100 | +- [Add lints `let_underscore_drop` and `let_underscore_lock` from Clippy](https://github.com/rust-lang/rust/pull/97739/) |
| 101 | +- [Stabilize `break`ing from arbitrary labeled blocks ("label-break-value")](https://github.com/rust-lang/rust/pull/99332/) |
| 102 | +- [Uninitialized integers, floats, and raw pointers are now considered immediate UB](https://github.com/rust-lang/rust/pull/98919/). |
| 103 | + Usage of `MaybeUninit` is the correct way to work with uninitialized memory. |
| 104 | +- [Stabilize raw-dylib for Windows x86_64, aarch64, and thumbv7a](https://github.com/rust-lang/rust/pull/99916/) |
| 105 | +- [Do not allow `Drop` impl on foreign ADTs](https://github.com/rust-lang/rust/pull/99576/) |
| 106 | + |
| 107 | +Compiler |
| 108 | +-------- |
| 109 | +- [Stabilize -Csplit-debuginfo on Linux](https://github.com/rust-lang/rust/pull/98051/) |
| 110 | +- [Use niche-filling optimization even when multiple variants have data](https://github.com/rust-lang/rust/pull/94075/) |
| 111 | +- [Associated type projections are now verified to be well-formed prior to resolving the underlying type](https://github.com/rust-lang/rust/pull/99217/#issuecomment-1209365630) |
| 112 | +- [Stringify non-shorthand visibility correctly](https://github.com/rust-lang/rust/pull/100350/) |
| 113 | +- [Normalize struct field types when unsizing](https://github.com/rust-lang/rust/pull/101831/) |
| 114 | +- [Update to LLVM 15](https://github.com/rust-lang/rust/pull/99464/) |
| 115 | +- [Fix aarch64 call abi to correctly zeroext when needed](https://github.com/rust-lang/rust/pull/97800/) |
| 116 | +- [debuginfo: Generalize C++-like encoding for enums](https://github.com/rust-lang/rust/pull/98393/) |
| 117 | +- [Add `special_module_name` lint](https://github.com/rust-lang/rust/pull/94467/) |
| 118 | +- [Add support for generating unique profraw files by default when using `-C instrument-coverage`](https://github.com/rust-lang/rust/pull/100384/) |
| 119 | +- [Allow dynamic linking for iOS/tvOS targets](https://github.com/rust-lang/rust/pull/100636/) |
| 120 | + |
| 121 | +New targets: |
| 122 | + |
| 123 | +- [Add armv4t-none-eabi as a tier 3 target](https://github.com/rust-lang/rust/pull/100244/) |
| 124 | +- [Add powerpc64-unknown-openbsd and riscv64-unknown-openbsd as tier 3 targets](https://github.com/rust-lang/rust/pull/101025/) |
| 125 | + - Refer to Rust's [platform support page][platform-support-doc] for more |
| 126 | + information on Rust's tiered platform support. |
| 127 | + |
| 128 | +Libraries |
| 129 | +--------- |
| 130 | + |
| 131 | +- [Don't generate `PartialEq::ne` in derive(PartialEq)](https://github.com/rust-lang/rust/pull/98655/) |
| 132 | +- [Windows RNG: Use `BCRYPT_RNG_ALG_HANDLE` by default](https://github.com/rust-lang/rust/pull/101325/) |
| 133 | +- [Forbid mixing `System` with direct system allocator calls](https://github.com/rust-lang/rust/pull/101394/) |
| 134 | +- [Document no support for writing to non-blocking stdio/stderr](https://github.com/rust-lang/rust/pull/101416/) |
| 135 | +- [`std::layout::Layout` size must not overflow `isize::MAX` when rounded up to `align`](https://github.com/rust-lang/rust/pull/95295) |
| 136 | + This also changes the safety conditions on `Layout::from_size_align_unchecked`. |
| 137 | + |
| 138 | +Stabilized APIs |
| 139 | +--------------- |
| 140 | + |
| 141 | +- [`std::backtrace::Backtrace`](https://doc.rust-lang.org/stable/std/backtrace/struct.Backtrace.html) |
| 142 | +- [`Bound::as_ref`](https://doc.rust-lang.org/stable/std/ops/enum.Bound.html#method.as_ref) |
| 143 | +- [`std::io::read_to_string`](https://doc.rust-lang.org/stable/std/io/fn.read_to_string.html) |
| 144 | +- [`<*const T>::cast_mut`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.cast_mut) |
| 145 | +- [`<*mut T>::cast_const`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.cast_const) |
| 146 | + |
| 147 | +These APIs are now stable in const contexts: |
| 148 | + |
| 149 | +- [`<*const T>::offset_from`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.offset_from) |
| 150 | +- [`<*mut T>::offset_from`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.offset_from) |
| 151 | + |
| 152 | +Cargo |
| 153 | +----- |
| 154 | + |
| 155 | +- [Apply GitHub fast path even for partial hashes](https://github.com/rust-lang/cargo/pull/10807/) |
| 156 | +- [Do not add home bin path to PATH if it's already there](https://github.com/rust-lang/cargo/pull/11023/) |
| 157 | +- [Take priority into account within the pending queue](https://github.com/rust-lang/cargo/pull/11032/). |
| 158 | + This slightly optimizes job scheduling by Cargo, with typically small improvements on larger crate graph builds. |
| 159 | + |
| 160 | +Compatibility Notes |
| 161 | +------------------- |
| 162 | + |
| 163 | +- [`std::layout::Layout` size must not overflow `isize::MAX` when rounded up to `align`](https://github.com/rust-lang/rust/pull/95295). |
| 164 | + This also changes the safety conditions on `Layout::from_size_align_unchecked`. |
| 165 | +- [`PollFn` now only implements `Unpin` if the closure is `Unpin`](https://github.com/rust-lang/rust/pull/102737). |
| 166 | + This is a possible breaking change if users were relying on the blanket unpin implementation. |
| 167 | + See discussion on the PR for details of why this change was made. |
| 168 | +- [Drop ExactSizeIterator impl from std::char::EscapeAscii](https://github.com/rust-lang/rust/pull/99880) |
| 169 | + This is a backwards-incompatible change to the standard library's surface |
| 170 | + area, but is unlikely to affect real world usage. |
| 171 | +- [Do not consider a single repeated lifetime eligible for elision in the return type](https://github.com/rust-lang/rust/pull/103450) |
| 172 | + This behavior was unintentionally changed in 1.64.0, and this release reverts that change by making this an error again. |
| 173 | +- [Reenable disabled early syntax gates as future-incompatibility lints](https://github.com/rust-lang/rust/pull/99935/) |
| 174 | +- [Update the minimum external LLVM to 13](https://github.com/rust-lang/rust/pull/100460/) |
| 175 | +- [Don't duplicate file descriptors into stdio fds](https://github.com/rust-lang/rust/pull/101426/) |
| 176 | +- [Sunset RLS](https://github.com/rust-lang/rust/pull/100863/) |
| 177 | +- [Deny usage of `#![cfg_attr(..., crate_type = ...)]` to set the crate type](https://github.com/rust-lang/rust/pull/99784/) |
| 178 | + This strengthens the forward compatibility lint deprecated_cfg_attr_crate_type_name to deny. |
| 179 | +- [`llvm-has-rust-patches` allows setting the build system to treat the LLVM as having Rust-specific patches](https://github.com/rust-lang/rust/pull/101072) |
| 180 | + This option may need to be set for distributions that are building Rust with a patched LLVM via `llvm-config`, not the built-in LLVM. |
| 181 | +- Combining three or more languages (e.g. Objective C, C++ and Rust) into one binary may hit linker limitations when using `lld`. For more information, see [issue 102754][102754]. |
| 182 | + |
| 183 | +[102754]: https://github.com/rust-lang/rust/issues/102754 |
| 184 | + |
| 185 | +Internal Changes |
| 186 | +---------------- |
| 187 | + |
| 188 | +These changes do not affect any public interfaces of Rust, but they represent |
| 189 | +significant improvements to the performance or internals of rustc and related |
| 190 | +tools. |
| 191 | + |
| 192 | +- [Add `x.sh` and `x.ps1` shell scripts](https://github.com/rust-lang/rust/pull/99992/) |
| 193 | +- [compiletest: use target cfg instead of hard-coded tables](https://github.com/rust-lang/rust/pull/100260/) |
| 194 | +- [Use object instead of LLVM for reading bitcode from rlibs](https://github.com/rust-lang/rust/pull/98100/) |
| 195 | +- [Enable MIR inlining for optimized compilations](https://github.com/rust-lang/rust/pull/91743) |
| 196 | + This provides a 3-10% improvement in compiletimes for real world crates. See [perf results](https://perf.rust-lang.org/compare.html?start=aedf78e56b2279cc869962feac5153b6ba7001ed&end=0075bb4fad68e64b6d1be06bf2db366c30bc75e1&stat=instructions:u). |
| 197 | + |
1 | 198 | Version 1.64.0 (2022-09-22) |
2 | 199 | =========================== |
3 | 200 |
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