rustc-1.69.0

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

Version 1.69.0 (2023-04-20) Language

• [Deriving built-in traits on packed structs works with Copy fields.]
• [Stabilize the cmpxchg16b target feature on x86 and x86_64.]
• [Improve analysis of trait bounds for associated types.]
• [Allow associated types to be used as union fields.]
• [Allow Self: Autotrait bounds on dyn-safe trait methods.]
• [Treat str as containing [u8] for auto trait purposes.]

Compiler

• [Upgrade *-pc-windows-gnu on CI to mingw-w64 v10 and GCC 12.2.]
• [Rework min_choice algorithm of member constraints.]
• [Support true and false as boolean flags in compiler arguments.]
• [Default repr(C) enums to c_int size.]

Libraries

• [Implement the unstable DispatchFromDyn for cell types, allowing downstream experimentation with custom method receivers.]
• [Document that fmt::Arguments::as_str() may return Some(_) in more cases after optimization, subject to change.]
• [Implement AsFd and AsRawFd for Rc.]

Stabilized APIs

• [CStr::from_bytes_until_nul]
• [core::ffi::FromBytesUntilNulError]

These APIs are now stable in const contexts:

• [SocketAddr::new]
• [SocketAddr::ip]
• [SocketAddr::port]
• [SocketAddr::is_ipv4]
• [SocketAddr::is_ipv6]
• [SocketAddrV4::new]
• [SocketAddrV4::ip]
• [SocketAddrV4::port]
• [SocketAddrV6::new]
• [SocketAddrV6::ip]
• [SocketAddrV6::port]
• [SocketAddrV6::flowinfo]
• [SocketAddrV6::scope_id]

Cargo

• [Cargo now suggests cargo fix or cargo clippy --fix when compilation warnings are auto-fixable.]
• [Cargo now suggests cargo add if you try to install a library crate.]
• [Cargo now sets the CARGO_BIN_NAME environment variable also for binary examples.]

Rustdoc

• [Vertically compact trait bound formatting.]
• [Only include stable lints in rustdoc::all group.]
• [Compute maximum Levenshtein distance based on the query.]
• [Remove inconsistently-present sidebar tooltips.]
• [Search by macro when query ends with !.]

Compatibility Notes

• [The rust-analysis component from rustup now only contains a warning placeholder.]
• [Unaligned references to packed fields are now a hard error.]
• [Update the minimum external LLVM to 14.]
• [Cargo now emits errors on invalid characters in a registry token.]
• [When default-features is set to false of a workspace dependency, and an inherited dependency of a member has default-features = true, Cargo will enable default features of that dependency.]
• [Cargo denies CARGO_HOME in the [env] configuration table. Cargo itself doesn't pick up this value, but recursive calls to cargo would, which was not intended.]
• [Debuginfo for build dependencies is now off if not explicitly set. This is expected to improve the overall build time.]

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.

• [Move format_args!() into AST (and expand it during AST lowering)]

[Bruce Dubbs]

Fixed at commits

b36f7378cf Update to numpy-1.24.3 (Python module).
320d985bc3 Update to rustc-1.69.0.

[Bruce Dubbs]

Milestone renamed