Changelog for Clippy 1.82 ✈️
```
Roses are red,
Violets are blue,
EuroRust in Austria,
RustConf in Canada.
```
---
### The cat of this release is *Racka*:
<img height=500 src="https://github.com/user-attachments/assets/e5e3cc95-6fc3-4214-aab0-4f26e0967ae5" alt="The cats of this Clippy release" />
Cats for the next release can be nominated in the comments :D
---
changelog: none
Remove `GenKillAnalysis`
There are two kinds of dataflow analysis in the compiler: `Analysis`, which is the basic kind, and `GenKillAnalysis`, which is a more specialized kind for gen/kill analyses that is intended as an optimization. However, it turns out that `GenKillAnalysis` is actually a pessimization! It's faster (and much simpler) to do all the gen/kill analyses via `Analysis`. This lets us remove `GenKillAnalysis`, and `GenKillSet`, and a few other things, and also merge `AnalysisDomain` into `Analysis`. The PR removes 500 lines of code and improves performance.
r? `@tmiasko`
The URLs contained an extra `clippy_lints`, which resulted in
broken links. Links are generated using each lint's `id_location`,
which already contains the full path inside the repository.
Change the category of `manual_is_power_of_two` to `pedantic`
Fixes#13547.
The value being checked might be a bit flag, suggesting `is_power_of_two` for it would make the code unreadable.
changelog: [`manual_is_power_of_two`]: Change the category to `pedantic`
Add lint for unnecessary lifetime bounded &str return
Closes#305.
Currently implemented with a pretty strong limitation that it can only see the most basic implicit return, but this should be fixable by something with more time and brain energy than me. Cavets from #13388 apply, as I have not had a review on my clippy lints yet so am pretty new to this.
```
changelog: [`unnecessary_literal_bound`]: Add lint for unnecessary lifetime bounded &str return.
```
Rollup of 9 pull requests
Successful merges:
- #122670 (Fix bug where `option_env!` would return `None` when env var is present but not valid Unicode)
- #131095 (Use environment variables instead of command line arguments for merged doctests)
- #131339 (Expand set_ptr_value / with_metadata_of docs)
- #131652 (Move polarity into `PolyTraitRef` rather than storing it on the side)
- #131675 (Update lint message for ABI not supported)
- #131681 (Fix up-to-date checking for run-make tests)
- #131702 (Suppress import errors for traits that couldve applied for method lookup error)
- #131703 (Resolved python deprecation warning in publish_toolstate.py)
- #131710 (Remove `'apostrophes'` from `rustc_parse_format`)
r? `@ghost`
`@rustbot` modify labels: rollup
Add `&pin (mut|const) T` type position sugar
This adds parser support for `&pin mut T` and `&pin const T` references. These are desugared to `Pin<&mut T>` and `Pin<&T>` in the AST lowering phases.
This PR currently includes #130526 since that one is in the commit queue. Only the most recent commits (bd450027eb4a94b814a7dd9c0fa29102e6361149 and following) are new.
Tracking:
- #130494
r? `@compiler-errors`
Use correct std/core prefix in lint output
changelog: none
I was waiting for #13452 to be merged before sending this one. `std` is used instead of `core` when appropriate in messages.
Move `clippy::module_name_repetitions` to `restriction` (from `pedantic`)
Rational:
- Too pedantic IMO, I use `#[warn(pedantic)]` in my personal projects, but then always allow this lint. The fact that we had a few `#[expect(clippy::module_name_repetitions)]` also underlines this point IMO
- STD doesn't do this either. Examples:
- std::vec::Vec
- std::collections::vec_deque::VecDequeue
- #7666 commonly ignored
---
changelog: Move [`module_name_repetitions`] to `restriction` (from `pedantic`)
[#13541](https://github.com/rust-lang/rust-clippy/pull/13541)
Fix lint `manual_slice_size_calculation` when a slice is ref more than once
When a slice is ref more than once, current suggestion given by `manual_slice_size_calculation` is wrong. For example:
```rs
let s: &[i32] = &[1, 2][..];
let ss: &&[i32] = &s; // <-----
let _ = size_of::<i32>() * ss.len();
```
clippy now suggests:
```patch
- let _ = size_of::<i32>() * ss.len();
+ let _ = size_of_val(ss);
```
However, this can result in calculating the size of `&[i32]`, instead of `[i32]` (this wrong suggestion also leads to `size_of_ref` warning: https://rust-lang.github.io/rust-clippy/master/index.html#/size_of_ref )
Now I am sending this PR to fix this bug, so that clippy will suggest (some deref added):
```patch
- let _ = size_of::<i32>() * ss.len();
+ let _ = size_of_val(*ss);
```
As I am not familiar with current clippy code-base, please correct me if I am not doing well or I can do it better :)
changelog: [`manual_slice_size_calculation`]: fix a bug when a slice is ref more than once.
[`implicit_saturating_sub`] Fix suggestion with a less volatile approach
Related to #13533, such and obvious mistake got pass my watch, quite embarassing :/
Revert #13533 and implement a more robust solution.
Revert "Fix span issue on `implicit_saturating_sub`
This reverts commit 140a1275f2.
changelog: [`lint_name`]: Fix suggestion for `if {} else if {} else {}` cases
r? `@y21`
Check MethodCall/Call arg count earlier or at all
This gets rid of a bunch of possible panic spots, as well as bailing out earlier for optimisation reasons.
I started doing this because I saw that a significant amount of time was being spent in the `create_dir` restriction lint when running clippy with `perf`, but this also helps with robustness.
changelog: none
Rational:
- Too pedantic IMO, it's often better to have fine grained modules and
then rexport stuff instead of one gigantic file
- STD doesn't do this either. Examples:
- std::vec::Vec
- std::collections::vec_deque::VecDequeue
- rust-clippy#7666 commonly ignored
Mark unnecessary_first_then_check and byte_char_slices as Applicable
I don't really see situations where this isn't Applicable that aren't weird edge cases where the lint should be disabled.
changelog: none
Improved wording of or_fun_call lint
The current wording (e.g. ``use of `ok_or` followed by a function call``) is potentially confusing (at least it confused me) by suggesting that the function that follows the (in this case) `ok_or` is the problem and not the function that is an argument to it.
The code in my program that triggered the confusing message is the following:
```rust
let file_id = buf
.lines()
.next()
.ok_or((
InternalError::ProblemReadingFromInbox,
anyhow!("No first line in inbox response ({file:?}): {buf:?}"),
))
.html_context(stream, lang)?;
```
I thought that `html_context` was the problem and that I should do something along the following lines:
```rust
let file_id = buf
.lines()
.next()
.ok_or_else(
(
InternalError::ProblemReadingFromInbox,
anyhow!("No first line in inbox response ({file:?}): {buf:?}"),
),
html_context(stream, lang),
)?
```
This is of course wrong. My confusion was only cleared up through the help message indicating what I should try instead.
If someone has a better idea of a replacement wording (currently e.g. ``` function call inside of `ok_or` ```), I'm all ears.
changelog: none
Rewrite lints page
This PR has multiple goals:
* Make lints page to work without needing a web server by removing the json file.
* Prepare the field to also make the page work with JS (not done in this PR but should be straightforward).
* Remove angular dependency.
r? `@Alexendoo`
changelog: make lint page work without web server
