bjoernager/rust
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Empowering everyone to build reliable and efficient software. Gabriel's commits. https://www.rust-lang.org/
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León Orell Valerian Liehr 44c7a2dbff
Rollup merge of #125259 - compiler-errors:fn-mut-as-a-treat, r=oli-obk 
An async closure may implement `FnMut`/`Fn` if it has no self-borrows

There's no reason that async closures may not implement `FnMut` or `Fn` if they don't actually borrow anything with the closure's env lifetime. Specifically, #123660 made it so that we don't always need to borrow captures from the closure's env.

See the doc comment on `should_reborrow_from_env_of_parent_coroutine_closure`:

c00957a3e2/compiler/rustc_hir_typeck/src/upvar.rs (L1777-L1823)

If there are no such borrows, then we are free to implement `FnMut` and `Fn` as permitted by our closure's inferred `ClosureKind`.

As far as I can tell, this change makes `async || {}` work in precisely the set of places they used to work before #120361.
Fixes #125247.

r? oli-obk
2024-05-22 19:04:45 +02:00
.github Rollup merge of #123492 - lcnr:master, r=davidtwco 2024-05-21 20:28:47 +02:00
.reuse std: move Once implementations to sys 2024-03-12 15:41:06 +01:00
compiler Rollup merge of #125259 - compiler-errors:fn-mut-as-a-treat, r=oli-obk 2024-05-22 19:04:45 +02:00
library Rollup merge of #124896 - RalfJung:miri-intrinsic-fallback, r=oli-obk 2024-05-22 19:04:43 +02:00
LICENSES Add missing CC-BY-SA-4.0. 2023-11-27 11:03:53 +00:00
src Rollup merge of #124896 - RalfJung:miri-intrinsic-fallback, r=oli-obk 2024-05-22 19:04:43 +02:00
tests Rollup merge of #125259 - compiler-errors:fn-mut-as-a-treat, r=oli-obk 2024-05-22 19:04:45 +02:00
.editorconfig Only use max_line_length = 100 for *.rs 2023-07-10 15:18:36 -07:00
.git-blame-ignore-revs Ignore compiletest test directive migration commits 2024-02-22 18:55:02 +00:00
.gitattributes Rename config.toml.example to config.example.toml 2023-03-11 14:10:00 -08:00
.gitignore don't globally ignore rustc-ice files 2023-09-16 09:44:44 +02:00
.gitmodules refactor: add rustc-perf submodule to src/tools 2024-05-20 14:56:49 +00:00
.mailmap Rollup merge of #123873 - cuviper:mailmap, r=lqd 2024-04-13 00:18:47 -04:00
Cargo.lock refactor(opt-dist): use rustc-perf from rustc checkout 2024-05-20 15:01:10 +00:00
Cargo.toml Remove the expand-yaml-anchors tool 2024-04-29 21:33:17 +02:00
CODE_OF_CONDUCT.md
config.example.toml describe new default value for rust.lld in config template 2024-05-16 16:08:06 +00:00
configure Ensure ./configure works when configure.py path contains spaces 2024-02-16 18:57:22 +00:00
CONTRIBUTING.md fix: Update CONTRIBUTING.md recommend -> recommended 2023-11-16 23:57:09 +05:30
COPYRIGHT
INSTALL.md chore: fix some comments 2024-03-27 22:32:53 +08:00
LICENSE-APACHE
LICENSE-MIT
README.md Use SVG logos in the README.md. 2024-04-03 19:48:20 +02:00
RELEASES.md release notes 1.78: add link to interior-mut breaking change 2024-05-03 14:56:05 +02:00
rust-bors.toml Increase timeout for new bors bot 2024-03-13 08:31:07 +01:00
rustfmt.toml refactor: add rustc-perf submodule to src/tools 2024-05-20 14:56:49 +00:00
triagebot.toml add boxy to compiler reviews 2024-05-17 17:06:03 +01:00
x Make x capable of resolving symlinks 2023-10-14 17:53:33 +03:00
x.ps1 use & instead of start-process in x.ps1 2023-12-09 09:46:16 -05:00
x.py Fix recent python linting errors 2023-08-02 04:40:28 -04:00

README.md

This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.

Why Rust?

  • Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrate with other languages.

  • Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.

  • Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).

Quick Start

Read "Installation" from The Book.

Installing from Source

If you really want to install from source (though this is not recommended), see INSTALL.md.

Getting Help

See https://www.rust-lang.org/community for a list of chat platforms and forums.

Contributing

See CONTRIBUTING.md.

License

Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.

Trademark

The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").

If you want to use these names or brands, please read the media guide.

Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.