Fix incorrect swap suggestion
Clippy suggests using swap on fields belonging to the same owner causing two mutable borrows of the owner.
Disclosure: This is my first time working with clippy and rusts HIR. I'm very grateful for assistance and suggestions to improve the PR.
fixes#981
changelog: Fix false positive in `manual_swap` lint
New `is_integer_const` to check more const ints
This mostly affects loop checks and the modulo_one lint. Tests were also updated where applicable.
changelog: none
Changed more `Vec` paths to diagnostic_items
In #4519, I missed a few instances of path matching for `Vec`, so here they are.
r? @oli-obk
changelog: none
Allow block_in_if_{stmt,expr} in external macro
I found this by running `cargo fix --clippy` on quite a big codebase.
You could refactor this assert to
```rust
let block_expr = _;
assert!(block_expr);
```
but,
1. it doesn't increase the readability IMO
2. That isn't possible in a `debug_assert!`
I'm not sure though, if we should allow this for macros in general or just for external macros.
changelog: Allow `block_in_if_{stmt,expr}` in external macros
Simplify `utils::match_def_path`, removing a FIXME
changelog: none
This removes the `Vec<Symbol>` allocation. We still need to call `cx.get_def_path`, but this should already have been interned, and I don't see how we can keep ergonomics of that function without allocating a `Vec`.
r? @phansch
fix misleading doc for explicit_counter_loop lint
changelog: replace misleading examples for explicit_counter_loop & more concise `Why is it bad?` section
This fixes#4472
Clippy suggests using swap on fields belonging to the same owner
causing two mutable borrows of the owner
Fixes#981
Signed-off-by: Cristian Kubis <cristian.kubis@tsunix.de>
Fix missing_const_for_fn false positive
We don't want to lint if the type of the method implements drop.
(constant functions cannot evaluate destructors)
changelog: Fix `missing_const_for_fn` false positive
Fixes#4449
More rustfix tests
<!--
Thank you for making Clippy better!
We're collecting our changelog from pull request descriptions.
If your PR only updates to the latest nightly, you can leave the
`changelog` entry as `none`. Otherwise, please write a short comment
explaining your change.
If your PR fixes an issue, you can add "fixes #issue_number" into this
PR description. This way the issue will be automatically closed when
your PR is merged.
If you added a new lint, here's a checklist for things that will be
checked during review or continuous integration.
- [ ] Followed [lint naming conventions][lint_naming]
- [ ] Added passing UI tests (including committed `.stderr` file)
- [ ] `cargo test` passes locally
- [ ] Executed `./util/dev update_lints`
- [ ] Added lint documentation
- [ ] Run `./util/dev fmt`
[lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
Note that you can skip the above if you are just opening a WIP PR in
order to get feedback.
Delete this line and everything above before opening your PR -->
cc #3630
This is probably easier reviewed per-commit.
changelog: none
Fix unused_unit false positive
changelog: Fix `unused_unit` false positive
For some reason the `expr` of `stmt.node` didn't contain the expansion information, but the `stmt.span` does.
Fixes#4076
Account for trait alias when looking for defid
I hit the crash on the `expect` call when running clippy on rustc libcore.
Hopefully this will fix it.
changelog: none
Fix some suggestions for redundant_pattern_matching
.. and change the Applicability to `MaybeIncorrect`.
Fixes the problem displayed in https://github.com/rust-lang/rust-clippy/issues/4344#issuecomment-519206388.
We now append `{}` to the suggestion so that the conditional has the
correct syntax again.
(If we were to _remove_ the `if` instead, it would trigger the
`unused_must_use` warning for `#[must_use]` types.)
changelog: Fix some suggestions for `redundant_pattern_matching`
Fixes the problem displayed in https://github.com/rust-lang/rust-clippy/issues/4344#issuecomment-519206388.
We now append `{}` to the suggestion so that the conditional has the
correct syntax again.
(If we were to _remove_ the `if` instead, it would trigger the
`unused_must_use` warning for `#[must_use]` types.
Add autofixable suggestion for unseparated integer literal suffixes
changelog: Add autofixable suggestion for unseparated integer literal suffixes
Somewhat WIP, since I haven't been able to get this working when adding `// run-rustfix` to `ui/literals.rs`. I think the issue is that there are multiple suggestions operating on one numerical literal, and I'm not sure what the best approach is to work around that.
Thanks
Add option_and_then_some lint
changelog: Add complexity lint to warn about `option.and_then(|o| Some(x))` and suggest replacing with `option.map(|o| x)`.
Closes#4299
Improvements to `type_repetition_in_bounds`
Improvements to the `type_repetition_in_bounds` trait based on feedback from #4380#4326#4323
Currently just make it pedantic. Hopefully, more to come
changelog: move `type_repetition_in_bounds` to `pedantic`
Add "could be written as" example to MANUAL_MEMCPY
<!--
Thank you for making Clippy better!
We're collecting our changelog from pull request descriptions.
If your PR only updates to the latest nightly, you can leave the
`changelog` entry as `none`. Otherwise, please write a short comment
explaining your change.
If your PR fixes an issue, you can add "fixes #issue_number" into this
PR description. This way the issue will be automatically closed when
your PR is merged.
If you added a new lint, here's a checklist for things that will be
checked during review or continuous integration.
- [ ] Followed [lint naming conventions][lint_naming]
- [ ] Added passing UI tests (including committed `.stderr` file)
- [ ] `cargo test` passes locally
- [ ] Executed `./util/dev update_lints`
- [ ] Added lint documentation
- [ ] Run `./util/dev fmt`
[lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
Note that you can skip the above if you are just opening a WIP PR in
order to get feedback.
Delete this line and everything above before opening your PR -->
changelog: none
Update lint deprecation for tool lints
changelog: Allow tool lints (`clippy::*`) to be deprecated
Our lint deprecation previously didn't work for tool lints, because
`register_removed` was registering lints to be removed _without_ the
`clippy` prefix.
Fixes#4349
Our lint deprecation previously didn't work for tool lints, because
`register_removed` was registering lints to be removed _without_ the
`clippy` prefix.
new_ret_no_self: allow Self in inner type for impl Trait return types
Check the inner types of associated types of a trait when checking for Self in the return type of a `new` method. This means that the following will no longer warn:
```rust
trait Trait {
type Inner;
}
struct S;
impl S {
fn new() -> impl Trait<Inner = Option<Self>> {
struct TraitImpl;
impl Trait for TraitImpl {
type Inner = Option<S>;
}
TraitImpl
}
}
```
```rust
#![feature(async_await)]
struct Connection;
impl Connection {
async fn new() -> Result<Self, ()> {
Ok(S)
}
}
```
closes#4359
changelog: fix `new_ret_no_self` lint for async `new` functions.
