clarify fn discriminant guarantees: only free lifetimes may get erased by lcnr · Pull Request #118006 · rust-lang/rust (original) (raw)

Pkgsrc changes:

• Remove NetBSD-8 support (embedded LLVm requires newer C++ than what is in -8; it's conceivable that this could still build with an external LLVM)
• undo powerpc 9.0 file naming tweak, since we no longer support -8.
• Remove patch to LLVM for powerpc now included by upstream.
• Minor adjustments, checksum changes etc.

Upstream changes:

Version 1.74.1 (2023-12-07)

• [Resolved spurious STATUS_ACCESS_VIOLATIONs in LLVM] (rust-lang/rust#118464)
• [Clarify guarantees for std::mem::discriminant] (rust-lang/rust#118006)
• [Fix some subtyping-related regressions] (rust-lang/rust#116415)

Version 1.74.0 (2023-11-16)

Language

• [Codify that std::mem::Discriminant<T> does not depend on any lifetimes in T] (rust-lang/rust#104299)
• [Replace private_in_public lint with private_interfaces and private_bounds per RFC 2145] (rust-lang/rust#113126) Read more in RFC 2145.
• [Allow explicit #[repr(Rust)]] (rust-lang/rust#114201)
• [closure field capturing: don't depend on alignment of packed fields] (rust-lang/rust#115315)
• [Enable MIR-based drop-tracking for async blocks] (rust-lang/rust#107421)

Compiler

• [stabilize combining +bundle and +whole-archive link modifiers] (rust-lang/rust#113301)
• [Stabilize PATH option for --print KIND=PATH] (rust-lang/rust#114183)
• [Enable ASAN/LSAN/TSAN for *-apple-ios-macabi] (rust-lang/rust#115644)
• [Promote loongarch64-unknown-none* to Tier 2] (rust-lang/rust#115368)
• [Add i686-pc-windows-gnullvm as a tier 3 target] (rust-lang/rust#115687)

Libraries

• [Implement From<OwnedFd/Handle> for ChildStdin/out/err] (rust-lang/rust#98704)
• [Implement From<{&,&mut} [T; N]> for Vec<T> where T: Clone] (rust-lang/rust#111278)
• [impl Step for IP addresses] (rust-lang/rust#113748)
• [Implement From<[T; N]> for Rc<[T]> and Arc<[T]>] (rust-lang/rust#114041)
• [impl TryFrom<char> for u16] (rust-lang/rust#114065)
• [Stabilize io_error_other feature] (rust-lang/rust#115453)
• [Stabilize the Saturating type] (rust-lang/rust#115477)
• [Stabilize const_transmute_copy] (rust-lang/rust#115520)

Stabilized APIs

• [core::num::Saturating] (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html)
• [impl From<io::Stdout> for std::process::Stdio] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStdout%3E-for-Stdio)
• [impl From<io::Stderr> for std::process::Stdio] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
• [impl From<OwnedHandle> for std::process::Child{Stdin, Stdout, Stderr}] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
• [impl From<OwnedFd> for std::process::Child{Stdin, Stdout, Stderr}] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
• [std::ffi::OsString::from_encoded_bytes_unchecked] (https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.from_encoded_bytes_unchecked)
• [std::ffi::OsString::into_encoded_bytes] (https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.into_encoded_bytes)
• [std::ffi::OsStr::from_encoded_bytes_unchecked] (https://doc.rust-lang.org/stable/std/ffi/struct.OsStr.html#method.from_encoded_bytes_unchecked)
• [std::ffi::OsStr::as_encoded_bytes] (https://doc.rust-lang.org/stable/std/ffi/struct.OsStr.html#method.as_encoded_bytes)
• [std::io::Error::other] (https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.other)
• [impl TryFrom<char> for u16] (https://doc.rust-lang.org/stable/std/primitive.u16.html#impl-TryFrom%3Cchar%3E-for-u16)
• [impl<T: Clone, const N: usize> From<&[T; N]> for Vec<T>] (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#impl-From%3C%26%5BT;+N%5D%3E-for-Vec%3CT,+Global%3E)
• [impl<T: Clone, const N: usize> From<&mut [T; N]> for Vec<T>] (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#impl-From%3C%26mut+%5BT;+N%5D%3E-for-Vec%3CT,+Global%3E)
• [impl<T, const N: usize> From<[T; N]> for Arc<[T]>] (https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#impl-From%3C%5BT;+N%5D%3E-for-Arc%3C%5BT%5D,+Global%3E)
• [impl<T, const N: usize> From<[T; N]> for Rc<[T]>] (https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#impl-From%3C%5BT;+N%5D%3E-for-Rc%3C%5BT%5D,+Global%3E)

These APIs are now stable in const contexts:

• [core::mem::transmute_copy] (https://doc.rust-lang.org/beta/std/mem/fn.transmute_copy.html)
• [str::is_ascii] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.is_ascii)
• [[u8]::is_ascii] (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.is_ascii)

Cargo

• [fix: Set MSRV for internal packages] (rust-lang/cargo#12381)
• [config: merge lists in precedence order] (rust-lang/cargo#12515)
• [fix(update): Clarify meaning of --aggressive as --recursive] (rust-lang/cargo#12544)
• [fix(update): Make -p more convenient by being positional] (rust-lang/cargo#12545)
• [feat(help): Add styling to help output ] (rust-lang/cargo#12578)
• [feat(pkgid): Allow incomplete versions when unambigious] (rust-lang/cargo#12614)
• [feat: stabilize credential-process and registry-auth] (rust-lang/cargo#12649)
• [feat(cli): Add '-n' to dry-run] (rust-lang/cargo#12660)
• [Add support for target.'cfg(..)'.linker] (rust-lang/cargo#12535)
• [Stabilize --keep-going] (rust-lang/cargo#12568)
• [feat: Stabilize lints] (rust-lang/cargo#12648)

Rustdoc

• [Add warning block support in rustdoc] (rust-lang/rust#106561)
• [Accept additional user-defined syntax classes in fenced code blocks] (rust-lang/rust#110800)
• [rustdoc-search: add support for type parameters] (rust-lang/rust#112725)
• [rustdoc: show inner enum and struct in type definition for concrete type] (rust-lang/rust#114855)

Compatibility Notes

• [Raise minimum supported Apple OS versions] (rust-lang/rust#104385)
• [make Cell::swap panic if the Cells partially overlap] (rust-lang/rust#114795)
• [Reject invalid crate names in --extern] (rust-lang/rust#116001)
• [Don't resolve generic impls that may be shadowed by dyn built-in impls] (rust-lang/rust#114941)

Internal Changes

These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools.

None this cycle.