Rollup merge of #101979 - rust-lang:pa-update-relnotes, r=Mark-Simulacrum
Update release notes for 1.64 This PR makes a few updates to the release notes to bring them on-par with the release notes of other releases: * The wording on some items has been changed to be more consistent and better describe what each change means, rather than using the PR title. * Items that were also in the compatibility notes have been removed from the other sections, only keeping them in the compat notes. * Diagnostics and ICE fixes have been removed from the notes. * The cargo section has been made more consistent. r? ``@Mark-Simulacrum`` cc ``@rust-lang/release`` ``@joshtriplett``
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Matthias Krüger
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RELEASES.md
54
RELEASES.md
@ -3,40 +3,30 @@ Version 1.64.0 (2022-09-22)
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Language
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--------
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- [make `const_err` show up in future breakage reports](https://github.com/rust-lang/rust/pull/97743/)
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- [allow unions with mutable references and tuples of allowed types](https://github.com/rust-lang/rust/pull/97995/)
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- [Unions with mutable references or tuples of allowed types are now allowed](https://github.com/rust-lang/rust/pull/97995/)
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- It is now considered valid to deallocate memory pointed to by a shared reference `&T` [if every byte in `T` is inside an `UnsafeCell`](https://github.com/rust-lang/rust/pull/98017/)
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- Unused tuple struct fields are now warned against in an allow-by-default lint, [`unused_tuple_struct_fields`](https://github.com/rust-lang/rust/pull/95977/), similar to the existing warning for unused struct fields. This lint will become warn-by-default in the future.
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Compiler
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--------
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- The minimum required versions for all `-linux-gnu` targets are now at least kernel 3.2 and glibc 2.17, for targets that previously supported older versions: [Increase the minimum linux-gnu versions](https://github.com/rust-lang/rust/pull/95026/)
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- [Keep unstable target features for asm feature checking](https://github.com/rust-lang/rust/pull/99155/)
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- [Add Nintendo Switch as tier 3 target](https://github.com/rust-lang/rust/pull/88991/)
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- Refer to Rust's [platform support page][platform-support-doc] for more
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information on Rust's tiered platform support.
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- [Only compile #[used] as llvm.compiler.used for ELF targets](https://github.com/rust-lang/rust/pull/93718/)
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- [sess: stabilize `-Zterminal-width` as `--diagnostic-width`](https://github.com/rust-lang/rust/pull/95635/)
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- [Fix repr(align) enum handling](https://github.com/rust-lang/rust/pull/96814/)
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- [Suggest defining variable as mutable on `&mut _` type mismatch in pats](https://github.com/rust-lang/rust/pull/98431/)
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- [Emit warning when named arguments are used positionally in format](https://github.com/rust-lang/rust/pull/98580/)
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- [Add support for link-flavor rust-lld for iOS, tvOS and watchOS](https://github.com/rust-lang/rust/pull/98771/)
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- [Do not mention private types from other crates as impl candidates](https://github.com/rust-lang/rust/pull/99091/)
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- [Only compile `#[used]` as llvm.compiler.used for ELF targets](https://github.com/rust-lang/rust/pull/93718/)
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- [Add the `--diagnostic-width` compiler flag to define the terminal width.](https://github.com/rust-lang/rust/pull/95635/)
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- [Add support for link-flavor `rust-lld` for iOS, tvOS and watchOS](https://github.com/rust-lang/rust/pull/98771/)
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Libraries
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---------
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- [Implement network primitives with ideal Rust layout, not C system layout](https://github.com/rust-lang/rust/pull/78802/)
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- [Remove restrictions on compare-exchange memory ordering.](https://github.com/rust-lang/rust/pull/98383/)
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- You can now `write!` or `writeln!` into an `OsString`: [Implement `fmt::Write` for `OsString`](https://github.com/rust-lang/rust/pull/97915/)
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- [Enforce that layout size fits in isize in Layout](https://github.com/rust-lang/rust/pull/95295/)
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- [Make RwLockReadGuard covariant](https://github.com/rust-lang/rust/pull/96820/)
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- [Implement `FusedIterator` for `std::net::[Into]Incoming`](https://github.com/rust-lang/rust/pull/97300/)
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- [`impl<T: AsRawFd> AsRawFd for {Arc,Box}<T>`](https://github.com/rust-lang/rust/pull/97437/)
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- [ptr::copy and ptr::swap are doing untyped copies](https://github.com/rust-lang/rust/pull/97712/)
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- [Add assertion that `transmute_copy`'s U is not larger than T](https://github.com/rust-lang/rust/pull/98839/)
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- [A soundness bug in `BTreeMap` was fixed](https://github.com/rust-lang/rust/pull/99413/) that allowed data it was borrowing to be dropped before the container.
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- [`ptr::copy` and `ptr::swap` are doing untyped copies](https://github.com/rust-lang/rust/pull/97712/)
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- [Add cgroupv1 support to `available_parallelism`](https://github.com/rust-lang/rust/pull/97925/)
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- [mem::uninitialized: mitigate many incorrect uses of this function](https://github.com/rust-lang/rust/pull/99182/)
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- [Mitigate many incorrect uses of `mem::uninitialized`](https://github.com/rust-lang/rust/pull/99182/)
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Stabilized APIs
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---------------
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@ -86,40 +76,34 @@ These APIs are now usable in const contexts:
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Cargo
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-----
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- Packages can now inherit settings from the workspace so that the settings
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can be centralized in one place. See
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- [Packages can now inherit settings from the workspace so that the settings
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can be centralized in one place.](https://github.com/rust-lang/cargo/pull/10859) See
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[`workspace.package`](https://doc.rust-lang.org/nightly/cargo/reference/workspaces.html#the-workspacepackage-table)
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and
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[`workspace.dependencies`](https://doc.rust-lang.org/nightly/cargo/reference/workspaces.html#the-workspacedependencies-table)
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for more details on how to define these common settings.
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[#10859](https://github.com/rust-lang/cargo/pull/10859)
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- Cargo commands can now accept multiple `--target` flags to build for
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multiple targets at once, and the
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- [Cargo commands can now accept multiple `--target` flags to build for
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multiple targets at once](https://github.com/rust-lang/cargo/pull/10766), and the
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[`build.target`](https://doc.rust-lang.org/nightly/cargo/reference/config.html#buildtarget)
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config option may now take an array of multiple targets.
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[#10766](https://github.com/rust-lang/cargo/pull/10766)
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- The `--jobs` argument can now take a negative number to count backwards from
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the max CPUs.
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[#10844](https://github.com/rust-lang/cargo/pull/10844)
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- `cargo add` will now update `Cargo.lock`.
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[#10902](https://github.com/rust-lang/cargo/pull/10902)
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- Added the
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- [The `--jobs` argument can now take a negative number to count backwards from
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the max CPUs.](https://github.com/rust-lang/cargo/pull/10844)
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- [`cargo add` will now update `Cargo.lock`.](https://github.com/rust-lang/cargo/pull/10902)
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- [Added](https://github.com/rust-lang/cargo/pull/10838) the
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[`--crate-type`](https://doc.rust-lang.org/nightly/cargo/commands/cargo-rustc.html#option-cargo-rustc---crate-type)
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flag to `cargo rustc` to override the crate type.
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[#10838](https://github.com/rust-lang/cargo/pull/10838)
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- Significantly improved the performance fetching git dependencies from GitHub
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when using a hash in the `rev` field.
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[#10079](https://github.com/rust-lang/cargo/pull/10079)
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- [Significantly improved the performance fetching git dependencies from GitHub
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when using a hash in the `rev` field.](https://github.com/rust-lang/cargo/pull/10079)
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Misc
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----
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- [Let rust-analyzer ship on stable, non-preview](https://github.com/rust-lang/rust/pull/98640/)
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- [The `rust-analyzer` rustup component is now available on the stable channel.](https://github.com/rust-lang/rust/pull/98640/)
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Compatibility Notes
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-------------------
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- The minimum required versions for all `-linux-gnu` targets are now at least kernel 3.2 and glibc 2.17, for targets that previously supported older versions: [Increase the minimum linux-gnu versions](https://github.com/rust-lang/rust/pull/95026/)
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- [Implement network primitives with ideal Rust layout, not C system layout](https://github.com/rust-lang/rust/pull/78802/)
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- [Add assertion that `transmute_copy`'s U is not larger than T](https://github.com/rust-lang/rust/pull/98839/)
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- [Network primitives are now implemented with the ideal Rust layout, not the C system layout](https://github.com/rust-lang/rust/pull/78802/). This can cause problems when transmuting the types.
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- [Add assertion that `transmute_copy`'s `U` is not larger than `T`](https://github.com/rust-lang/rust/pull/98839/)
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- [A soundness bug in `BTreeMap` was fixed](https://github.com/rust-lang/rust/pull/99413/) that allowed data it was borrowing to be dropped before the container.
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- [The Drop behavior of C-like enums cast to ints has changed](https://github.com/rust-lang/rust/pull/96862/). These are already discouraged by a compiler warning.
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- [Relate late-bound closure lifetimes to parent fn in NLL](https://github.com/rust-lang/rust/pull/98835/)
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