Update clippy #81692
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Update clippy #81692
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The issue: See this Rust playground link: https://play.rust-lang.org/?edition=2018&gist=12cb5d1e7527f8c37743b87fc4a53748 Run the above with clippy to see the following warning: ``` warning: returning the result of a `let` binding from a block --> src/main.rs:24:5 | 23 | let value = Foo::new(&x).value(); | --------------------------------- unnecessary `let` binding 24 | value | ^^^^^ | = note: `#[warn(clippy::let_and_return)]` on by default = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return help: return the expression directly | 23 | 24 | Foo::new(&x).value() | ``` Implementing the suggested fix, removing the temporary let binding, yields a compiler error: ``` error[E0597]: `x` does not live long enough --> src/main.rs:23:14 | 23 | Foo::new(&x).value() | ---------^^- | | | | | borrowed value does not live long enough | a temporary with access to the borrow is created here ... 24 | } | - | | | `x` dropped here while still borrowed | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `Foo` | = note: the temporary is part of an expression at the end of a block; consider forcing this temporary to be dropped sooner, before the block's local variables are dropped help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block | 23 | let x = Foo::new(&x).value(); x | ^^^^^^^ ^^^ ``` The fix: Of course, clippy looks like it should already handle this edge case; however, it appears `utils::fn_def_id` is not returning a `DefId` for `Foo::new`. Changing the `qpath_res` lookup to use the child Path `hir_id` instead of the parent Call `hir_id` fixes the issue.
…=flip1995 clippy_dev: Pass stderr to CommandFailed This improves error reporting when running `rustfmt` fails for some reason, as seen [on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/257328-clippy/topic/Issue.20with.20rustfmt). It will now include the stderr output in the `CliError::CommandFailed` error. changelog: none
…1995 Do not lint when range is completely included into another one This fix has been developed following this [comment](rust-lang/rust-clippy#5986 (comment)). So this will be linted: ``` |----------| |-----------| ``` Now this won't be linted: ``` |---| |--------------------| ``` and this will still lint: ``` |--------| |--------------| ``` Fixes: rust-lang#5986 changelog: Fix FPs in match_overlapping_arm, when first arm is completely included in second arm
Implement Rust 2021 panic This implements the Rust 2021 versions of `panic!()`. See rust-lang#80162 and rust-lang/rfcs#3007. It does so by replacing `{std, core}::panic!()` by a bulitin macro that expands to either `$crate::panic::panic_2015!(..)` or `$crate::panic::panic_2021!(..)` depending on the edition of the caller. This does not yet make std's panic an alias for core's panic on Rust 2021 as the RFC proposes. That will be a separate change: rust-lang@c5273bd That change is blocked on figuring out what to do with rust-lang#80846 first.
exhaustive_structs: don't trigger for structs with private fields changelog: Restrict `exhaustive_structs` to structs with all-public fields
Fix let_and_return false positive The issue: See this Rust playground link: https://play.rust-lang.org/?edition=2018&gist=12cb5d1e7527f8c37743b87fc4a53748 Run the above with clippy to see the following warning: ``` warning: returning the result of a `let` binding from a block --> src/main.rs:24:5 | 23 | let value = Foo::new(&x).value(); | --------------------------------- unnecessary `let` binding 24 | value | ^^^^^ | = note: `#[warn(clippy::let_and_return)]` on by default = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return help: return the expression directly | 23 | 24 | Foo::new(&x).value() | ``` Implementing the suggested fix, removing the temporary let binding, yields a compiler error: ``` error[E0597]: `x` does not live long enough --> src/main.rs:23:14 | 23 | Foo::new(&x).value() | ---------^^- | | | | | borrowed value does not live long enough | a temporary with access to the borrow is created here ... 24 | } | - | | | `x` dropped here while still borrowed | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `Foo` | = note: the temporary is part of an expression at the end of a block; consider forcing this temporary to be dropped sooner, before the block's local variables are dropped help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block | 23 | let x = Foo::new(&x).value(); x | ^^^^^^^ ^^^ ``` The fix: Of course, clippy looks like it should already handle this edge case; however, it appears `utils::fn_def_id` is not returning a `DefId` for `Foo::new`. Changing the `qpath_res` lookup to use the child Path `hir_id` instead of the parent Call `hir_id` fixes the issue. changelog: none
…ip1995 Add new lint "missing_panics_doc" fixes rust-lang#1974 changelog: Added the "missing_panics_doc" lint which lints when public functions that may panic are missing "# Panics" in their doc comment
Remove Option from `path_to_res` return type changelog: none Tiny cleanup for `path_to_res` to return `Res` instead of `Option<Res>`.
Editorconfig is a lightweight specification that helps maintaining consistent coding/formatting style accross editors, especially those editors that are not explicitly aware of Rust and rustfmt. https://editorconfig.org/
Box the biggest ast::ItemKind variants This PR is a different approach on rust-lang#81400, aiming to save memory in humongous ASTs. The three affected item kind enums are: - `ast::ItemKind` (208 -> 112 bytes) - `ast::AssocItemKind` (176 -> 72 bytes) - `ast::ForeignItemKind` (176 -> 72 bytes)
…ion-some-nits, r=flip1995 Updated some NITs in the documentation from rust-lang#6630 I've implemented the two suggestions from rust-lang#6630 that were added after the merge. This PR also changes the example code to use `register_*_pass` instead of `register_late_pass`. I'm not sure if this is better or worse, but it makes it clearer in my opinion. Let me know if I should change it back. --- changelog: none r? `@flip1995`
…Simulacrum Add .editorconfig This adds a .editorconfig file to rust-lang/rust, matching Clippy's. It's not clear that this will benefit many people, but the cost is low and the rewards are potentially meaningful.
Rustup Pulling in AST changes changelog: none
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Rollup of 5 pull requests Successful merges: - rust-lang#80394 (make const_err a future incompat lint) - rust-lang#81532 (Remove incorrect `delay_span_bug`) - rust-lang#81692 (Update clippy) - rust-lang#81715 (Reduce tab formatting assertions to debug only) - rust-lang#81716 (Fix non-existent-field ICE for generic fields.) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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r? @flip1995