fix FP in lint `[needless_match]`
fixes: #8542fixes: #8551fixes: #8595fixes: #8599
---
changelog: check for more complex custom type, and ignore type coercion in [`needless_match`]
Suggest from_utf8_unchecked in const contexts
Unfortunately I couldn't figure out how to check whether a given expression is in an `unsafe` context or not, so I just unconditionally emit the wrapping `unsafe {}` block in the suggestion. If there is an easy way to get it to work better then I would love to hear it.
changelog: Suggest `from_utf8_unchecked` instead of `from_utf8` in const contexts for ``[`transmute_bytes_to_str`]``
refs: #8379
Fix unnecessary_cast suggestion for type aliasses
Fix#6923. The [`unnecessary_cast`] lint now will skip casting to non-primitive type.
changelog: fix lint [`unnecessary_cast `]
`indexing_slicing` should not fire if a valid array index comes from a constant function that is evaluated at compile-time
fix#8348
changelog: [`indexing_slicing`] fewer false positives in `const` contexts and with `const` indices
fix misspelling in diagnostic message of `bytes_nth`
*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: fix misspelling in diagnostic message in ``[`bytes_nth`]``
Run fmt test before compile-test/dogfood
I seem to always forget to run `cargo dev fmt` before doing a test. This lets it fail fast rather than going through the much longer compile-test/dogfood tests first
changelog: none
Rework `undocumented_unsafe_blocks`
fixes: #8264fixes: #8449
One thing came up while working on this. Currently comments on the same line are supported like so:
```rust
/* SAFETY: reason */ unsafe {}
```
Is this worth supporting at all? Anything other than a couple of words doesn't really fit well.
edit: [zulip topic](https://rust-lang.zulipchat.com/#narrow/stream/257328-clippy/topic/.60undocumented_unsafe_blocks.60.20same.20line.20comment)
changelog: Don't lint `undocumented_unsafe_blocks` when the unsafe block comes from a proc-macro.
changelog: Don't lint `undocumented_unsafe_blocks` when the preceding line has a safety comment and the unsafe block is a sub-expression.
add `empty_structs_with_brackets`
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Closes#8591
I'm already sorry for the massive diff 😅
changelog: New lint [`empty_structs_with_brackets`]
Remove deps
This remove both `regex` and `cargo_metadata` as dependencies making `clippy_dev` compile ~3x faster (~46s -> ~16s locally). `cargo_metadata` was used to extract the `version` field from `Cargo.toml`, which is done trivially without that. `regex` was used to parse `define_clippy_lint` in `update_lints` which is now done using `rustc_lexer`. This isn't any simpler, but it compiles ~15s faster and runs ~3x faster (~2.1s -> ~0.7s locally).
The next biggest offenders to compile times are `clap` and `winapi` on windows. `clap` could be removed, but re-implementing enough is probably more work than it's worth. `winapi` is used by `opener` and `walkdir` so it's stuck there.
changelog: none
Handle relative paths in module_files lints
The problem being that when clippy is run in the project's directory `lp` would be a relative path, this wasn't caught by the tests as there `lp` is an absolute path. Being a relative path it did not start with `trim_src_path` and so was ignored
Also allowed the removal of some `.to_os_string`/`.to_owned`s
changelog: Fixes [`self_named_module_files`] and [`mod_module_files`] not linting
Fixes#8123, cc `@DevinR528`
single_element_loop: handle arrays for Edition2021
changelog: [`single_element_loop`] handle arrays in Edition 2021, handle `.iter_mut()` and `.into_iter()`, and wrap in parens if necessary
Add `crate_in_macro_def` lint
This PR adds a lint to check for `crate` as opposed to `$crate` used in a macro definition.
I think this can close#4798. That issue focused on the case where the macro author "imports something into said macro."
But I think use of `crate` is likely to be a bug whether it appears in a `use` statement or not. There could be some use case I am failing to see, though. (cc: `@nilscript` `@flip1995)`
changelog: `crate_in_macro_def`
new lint: `only_used_in_recursion`
changed:
- added `only_used_in_recursion`.
- fixed code that variables are only used in recursion.
- this would not lint when `unused_variable`
This fixes: #8390
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changelog: add lint [`only_used_in_recursion`]
