Rust Search
Find the best content on Rust, curated by the community; a
search engine for Rustaceans.
# Summary [summary]: #summary Documentation of [`#[no_mangle]`](https://doc.rust-lang.org/reference/abi.html#the-no_mangle-attribute) points out that by default a `#[no_mangle]` function (or `static`) will be "publicly exported from the pro...
## Summary [summary]: #summary While Rust's pre-built standard library has proven itself sufficient for the majority of use cases, there are a handful of use cases that are not well supported: 1. Rebuilding the standard library to match the...
## Summary [summary]: #summary Add a new Cargo configuration option, `build-std.when = "always|never"`, which will unconditionally rebuild standard library dependencies. The set of standard library dependencies can optionally be customised...
Summary Allow users to add explicit dependencies on standard library crates in the Cargo.toml. This enables Cargo to determine which standard library crates are required by the crate graph without build-std.crates being set and for differen...
## Summary [summary]: #summary Promote aarch64-pc-windows-msvc to Tier 1 with Host Tools. ## Motivation [motivation]: #motivation About [30% of Rust users use Windows][survey-2024], while the majority of these developers and their customers...
## Summary [summary]: #summary Allow deriving an implementation of the `From` trait using `#[derive(From)]` on structs with a single field. ```rust #[derive(From)] struct TcpPort(u16); // Generates: impl From<u16> for TcpPort { fn from(valu...
Summary This RFC adds three new attributes: • #![register_lint_tool(tool_name)] allows controlling namespaced lints with #[warn(tool_name::lint_name)]. • #![register_attribute_tool(tool_name)] allows using tool names in inert attributes wit...
## Summary [summary]: #summary `--crate-attr` allows injecting crate-level attributes via the command line. It is supported by all the official rustc drivers: Rustc, Rustdoc, Clippy, Miri, and Rustfmt. Rustdoc extends it to doctests, discus...
## Summary [summary]: #summary Deprecate `lib.edition`, etc in favor of only setting `package.edition`, removing the fields in the next Edition. ## Motivation [motivation]: #motivation Cargo supports setting the edition per-build-target: ``...
## Summary [summary]: #summary Demote target `i686-pc-windows-gnu` from Tier 1 to Tier 2 (with host tools) to better reflect its current maintenance and usage status. ## Motivation [motivation]: #motivation ### Background Rust has supported...
## Summary Propose a slate of 39 project goals for 2025H1, including 3 flagship goals: * Continue making Rust easier to use for network systems by [**bringing the Async Rust experience closer to parity with sync Rust**](https://rust-lang.gi...
# Security Improvements for CI Publishing to crates.io - Feature Name: crates-io-trusted-publishing - Start Date: 2024-09-10 - RFC PR: [rust-lang/rfcs#3691](https://github.com/rust-lang/rfcs/pull/3691) ## Summary [summary]: #summary This RF...
## Summary Disallow `extern` without an explicit ABI in a new edition. Write `extern "C"` (or another ABI) instead of just `extern`. ```diff - extern { … } + extern "C" { … } - extern fn foo() { … } + extern "C" fn foo() { … } ``` ## Motiva...
## Summary [summary]: #summary * We introduce the concept of "target modifier". A target modifier is a flag where it may be unsound if you link together two compilation units that disagree on the flag. * We fail the build if rustc can see t...
## Summary [summary]: #summary Support defining `macro_rules!` macros that work as attribute macros. ## Motivation [motivation]: #motivation Many crates provide attribute macros. Today, this requires defining proc macros, in a separate crat...
## Summary [summary]: #summary Support implementing `derive(Trait)` via a `macro_rules!` macro. ## Motivation [motivation]: #motivation Many crates support deriving their traits with `derive(Trait)`. Today, this requires defining proc macro...
## Summary [summary]: #summary Allow `true` and `false` boolean literals as `cfg` predicates, i.e. `cfg(true)`/`cfg(false)`. ## Motivation [motivation]: #motivation Often, we may want to temporarily disable a block of code while working on...
## Summary [summary]: #summary Give users control over the feature unification that happens based on the packages they select. - A way for `cargo check -p foo -p bar` to build like `cargo check -p foo && cargo check -p bar` - A way for `car...
## Summary [summary]: #summary Allow `struct` definitions to provide default values for individual fields and thereby allowing those to be omitted from initializers. When deriving `Default`, the provided values will then be used. For exampl...
## Summary [summary]: #summary Support restricting implementation of individual methods within traits, using the existing unused `final` keyword. ## Motivation [motivation]: #motivation When defining a trait, the trait can provide optional...
""self own" sounds like a rust thing"