Add `ui_cargo_toml_metadata` test
This PR adds a test to check the metadata of packages in the `ui_cargo` directory.
A recent change to Cargo causes it to warn when it finds multiple packages with the same name in a git dependency (the issue is described [here](https://github.com/rust-lang/cargo/issues/10752)).
Many (if not all) Dylint libraries depend upon `clippy_utils`. As a result of the change, one now sees the following when building a Dylint library:
```
warning: skipping duplicate package `fail` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/module_style/pass_mod`
warning: skipping duplicate package `fail` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/module_style/fail_no_mod`
warning: skipping duplicate package `cargo_common_metadata` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/cargo_common_metadata/fail_publish_true`
warning: skipping duplicate package `fail-cargo` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/cargo_rust_version/pass_cargo`
warning: skipping duplicate package `fail-clippy` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/cargo_rust_version/fail_clippy`
warning: skipping duplicate package `fail-both-same` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/cargo_rust_version/fail_both_same`
warning: skipping duplicate package `fail-file-attr` found at `/home/smoelius/.cargo/git/checkouts/rust-clippy-4b72815e96774b3d/0cb0f76/tests/ui-cargo/cargo_rust_version/fail_file_attr`
```
There appear to be two contributing factors:
- Some packages in `ui_cargo` could have a `publish = false` added to them.
- Some packages in `ui_cargo` seem to be inconsistently named.
The new test checks that each package in the `ui_cargo` directory has a name matching one of its parent directories, and `publish = false` in its metadata (with a few exceptions).
Note that the packages in `cargo_common_metadata` require special care because `publish` is the subject of some of the `cargo_common_metadata` tests.
Also note that this PR adds `walkdir` as a dev dependency to the `clippy` package. However, it was already a dependency of `clippy_dev` and `lintcheck`. So hopefully this is acceptable.
Our continued thanks for making `clippy_utils` available, BTW. :)
r? `@flip1995`
changelog: none
Add new lint `obfuscated_if_else`
part of #9100, additional commits could make it work with `then` and `unwrap_or_else` as well
changelog: Add new lint `obfuscated_if_else`
unused_self: respect avoid-breaking-exported-api
```
changelog: [`unused_self`]: Now respects the `avoid-breaking-exported-api` config option
```
Fixes#9195.
I mostly copied the implementation from `unnecessary_wraps`, since I don't have much understanding of rustc internals.
[`box_collection`]: raise warn for all std collections
So far, only [`Vec`, `String`, `HashMap`] were considered.
Extend collection checklist for this lint with:
- `HashSet`
- `VecDeque`
- `LinkedList`
- `BTreeMap`
- `BTreeSet`
- `BinaryHeap`
changelog: [`box_collection`]: raise warn for all std collections
fix [`manual_flatten`] help texts order
fixes #8948
Whenever suggestion for this lint does not fit in one line,
legacy solution has some unexpected/unhandled behavior:
lint will then generate two help messages which seem to be shown in the wrong order.
The second help message in that case will contain the suggestion.
The first help message always refers to a suggestion message,
and **it should adapt** depending on the location of the suggestion:
- inline suggestion within the error/warning message
- suggestion separated into a second help text
This is my first contribution here, so I hope I didn't miss anything for creating this PR.
changelog: fix [`manual_flatten`] help texts order
Whenever suggestion for this lint does not fit in one line,
lint will generate two help messages. The second help message
will always contain the suggestion.
The first help message refers to suggestion message,
and it should adapt depending on the location of the suggestion:
- inline suggestion within the error/warning message
- suggestion separated into second help text
Add `repeated_where_clause_or_trait_bound` lint
I thought I would try and scratch my own itch for #8674.
1. Is comparing the `Res` the correct way for ensuring we have the same trait?
2. Is there a way to get the spans for the bounds and clauses for suggestions?
I tried to use `GenericParam::bounds_span_for_suggestions` but it only gave me an empty span at the end of the spans.
I tried `WhereClause::span_for_predicates_or_empty_place` and it included the comma.
3. Is there a simpler way to get the trait names? I have used the spans of the traits because I didn't see a way to get it off the `Res` or `Def`.
changelog: Add ``[`repeated_where_clause_or_trait_bound`]`` lint.
Fixes for `branches_sharing_code`
fixes#7198fixes#7452fixes#7555fixes#7589
changelog: Don't suggest moving modifications to locals used in any of the condition expressions in `branches_sharing_code`
changelog: Don't suggest moving anything after a local with a significant drop in `branches_sharing_code`
Fix span for or_fun_call
Closes#9033
changelog: [`or_fun_call`]: span points to the `unwrap_or` only instead of through the entire method chain expression
* Don't suggest moving modifications to locals used in any of the condition expressions
* Don't suggest moving anything after a local with a significant drop
Simplify if let statements
fixes: #8288
---
changelog: Allowing [`qustion_mark`] lint to check `if let` expressions that immediatly return unwrapped value
Add test for and fix rust-lang/rust-clippy#9131
This lint seems to have been broken by #98446 -- but of course, there was no clippy test for this case at the time.
`expr.span.ctxt().outer_expn_data()` now has `MacroKind::Derive` instead of `MacroKind::Attr` for something like:
```
#[derive(Clone, Debug)]
pub struct UnderscoreInStruct {
_foo: u32,
}
```
---
changelog: none
closes: https://github.com/rust-lang/rust-clippy/issues/9131
Lint simple expressions in `manual_filter_map`, `manual_find_map`
changelog: Lint simple expressions in [`manual_filter_map`], [`manual_find_map`]
The current comparison rules out `.find(|a| a.is_some()).map(|b| b.unwrap())` because `a` being a reference can effect more complicated expressions, this adds a simple check for that case and adds the necessary derefs
There's some overlap with `option_filter_map` so `lint_filter_some_map_unwrap` now returns a `bool` to indicate it linted
rustc comiler internals helpfully tell us how to fix the issue:
to get the signature of a closure, use `substs.as_closure().sig()` not `fn_sig()`
Fixes ICE in #9041
Finishing touches for `#[expect]` (RFC 2383)
This PR adds documentation and some functionality to rustc's lint passes, to manually fulfill expectations. This is needed for some lints in Clippy. Hopefully, it should be one of the last things before we can move forward with stabilizing this feature.
As part of this PR, I've also updated `clippy::duplicate_mod` to showcase how this new functionality can be used and to ensure that it works correctly.
---
changelog: [`duplicate_mod`]: Fixed lint attribute interaction
r? `@wesleywiser`
cc: https://github.com/rust-lang/rust/issues/97660, https://github.com/rust-lang/rust/issues/85549
And I guess that's it. Here have a magical unicorn 🦄
Fix `undocumented_unsafe_blocks` in closures
fixes#9114
changelog: Fix `undocumented_unsafe_blocks` not checking for comments before the start of a closure
`extra_unused_lifetimes` add FP test case emitting from derived attributes.
Add test to cover for #9014 which is fixed in #9037.
changelog: [`extra_unused_lifetimes`] Add FP test case emitting from derived attributes.
---
Seeing the FP from the test:
```sh
$ git revert -m 1 1d1ae10876
$ TESTNAME=extra_unused_lifetime cargo uitest
```
Add details about how significant drop in match scrutinees can cause deadlocks
Adds more details about how a significant drop in a match scrutinee can cause a deadlock and include link to documentation.
changelog: Add more details to significant drop lint to explicitly show how temporaries in match scrutinees can cause deadlocks.
Fix `#[expect]` for most clippy lints
This PR fixes most `#[expect]` - lint interactions listed in rust-lang/rust#97660. [My comment in the issue](https://github.com/rust-lang/rust/issues/97660#issuecomment-1147269504) shows the current progress (Once this is merged). I plan to work on `duplicate_mod` and `multiple_inherent_impl` and leave the rest for later. I feel like stabilizing the feature is more important than fixing the last few nits, which currently also don't work with `#[allow]`.
---
changelog: none
r? `@Jarcho`
cc: rust-lang/rust#97660
Add lint `explicit_auto_deref` take 2
fixes: #234fixes: #8367fixes: #8380
Still things to do:
* ~~This currently only lints `&*<expr>` when it doesn't trigger `needless_borrow`.~~
* ~~This requires a borrow after a deref to trigger. So `*<expr>` changing `&&T` to `&T` won't be caught.~~
* The `deref` and `deref_mut` trait methods aren't linted.
* Neither ~~field accesses~~, nor method receivers are linted.
* ~~This probably shouldn't lint reborrowing.~~
* Full slicing to deref should probably be handled here as well. e.g. `&vec[..]` when just `&vec` would do
changelog: new lint `explicit_auto_deref`
