Fix suggestions for `async` closures in redundant_closure_call
Fixes#9052
changelog: Fix suggestions given by [`redundant_closure_call`] for async closures
- only compare where predicates to trait bounds when generating where
clause specific message to fix#9151
- use comparable_trait_ref to account for trait bound generics to fix#8757
Move [`assertions_on_result_states`] to restriction
Close#9263
This lint causes regression on readability of code and log output. And printing runtime values is not particularly useful for majority of tests which should be reproducible.
changelog: Move [`assertions_on_result_states`] to restriction and don't lint it for unit type
Signed-off-by: tabokie <xy.tao@outlook.com>
unwrap_used: Don't recommend using `expect` when the `expect_used` lint is not allowed
Fixes#9222
```
changelog: [`unwrap_used`]: Don't recommend using `expect` when the `expect_used` lint is not allowed
```
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
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`
`trivially_copy_pass_by_ref` fixes
fixes#5953fixes#2961
The fix for #5953 is overly aggressive, but the suggestion is so bad that it's worth the false negatives. Basically three things together:
* It's not obviously wrong
* It compiles
* It may actually work when tested
changelog: Don't lint `trivially_copy_pass_by_ref` when unsafe pointers are used.
changelog: Better track lifetimes when linting `trivially_copy_pass_by_ref`.
add [`manual_find`] lint for function return case
part of the implementation discussed in #7143
changelog: add [`manual_find`] lint for function return case
feat(new lint): new lint `manual_retain`
close#8097
This PR is a new lint implementation.
This lint checks if the `retain` method is available.
Thank you in advance.
changelog: add new ``[`manual_retain`]`` lint
Suggest `pointer::cast` when possible in `transmute_ptr_to_ref`
fixes#8924
changelog: Suggest casting the pointer for any type containing lifetimes in `transmute_ptr_to_ref`.
changelog: Suggest `pointer::cast` when possible in `transmute_ptr_to_ref`.
enum_variant_names should ignore when all prefixes are _
close#9018
When Enum prefix is only an underscore, we should not issue warnings.
changelog: fix false positive in enum_variant_names
Lint `[single_match]` on `Option` matches
fixes#8928
changelog: did some cleanup of the logic for ``[`single_match`]`` and ``[`single_match_else`]`` which fixes the bug where `Option` matches were not linted unless a wildcard was used for one of the arms.
