Add a new lint `ptr_as_ptr`
This PR adds a new lint `ptr_as_ptr` which checks for `as` casts between raw pointers without changing its mutability and suggest replacing it with `pointer::cast`. Closes#5890.
Open question: should this lint be `pedantic` or `style`? I set it `pedantic` for now because the original post suggests using it, but I think the lint also fits well to `style`.
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changelog: New lint `ptr_as_ptr`
Fix: Empty enum never type suggested only if the feature is enabled
This PR addresses [Issue 6422](https://github.com/rust-lang/rust-clippy/issues/6422). Instead of always recommending `never type` for empty enums, Clippy would only recommend [the lint](https://rust-lang.github.io/rust-clippy/master/index.html#empty_enum) if [LatePass.TyCtxt](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/context/struct.TyCtxt.html) has `features().never_type` enabled.
- \[ ] Followed [lint naming conventions][lint_naming]
- \[x] Added passing UI tests (including committed `.stderr` file)
- \[x] `cargo test` passes locally
- \[x] Executed `cargo dev update_lints`
- \[x] Added lint documentation
- \[x] Run `cargo dev fmt`
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*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: Only trigger [`empty_enum`] lint if `never_type` feature is enabled.
Curse outdated test output
changelog: internal
Change `cargo dev bless` to only include test output that was generated since the last build of clippy. This is especially useful when running tests with `TESTNAME=...`. The feature may be disabled by `cargo dev bless --ignore-timestamp`.
New lint: vec_init_then_push
fixes: #1483
This will trigger on `new`, `default`, and `with_capacity` when the given capacity is less than or equal to the number of push calls. Is there anything else this should trigger on?
changelog: Added lint: `vec_init_then_push`
collapsible_if: split collapsible_else_if into its own lint so we can enable/disable it particularly
This splits up clippy::collapsible_if into collapsible_if for
if x {
if y { }
}
=>
if x && y { }
and collapsible_else_if for
if x {
} else {
if y { }
}
=>
if x {
} else if y {
}
so that we can lint for only the latter but not the first if we desire.
changelog: collapsible_if: split up linting for if x {} else { if y {} } into collapsible_else_if lint
This splits up clippy::collapsible_if into collapsible_if for
if x {
if y { }
}
=>
if x && y { }
and collapsible_else_if for
if x {
} else {
if y { }
}
=>
if x {
} else if y {
}
so that we can lint for only the latter but not the first if we desire.
changelog: collapsible_if: split up linting for if x {} else { if y {} } into collapsible_else_if lint
Fix blessing of test output in subdirectories
The core issue was the usage of `reference_file_path.file_name()`, which
provided a non-existent path if the file to be updated was in a
subdirectory.
Instead we have to provide the whole path after 'tests/ui/' as the
'filename'. This part of the path is called `test_name` in the code now.
changelog: none
Ensure `Copy` exception in trait definition for `wrong_self_conventio…
Add a test case to ensure `Copy` exception is preserved also in trait definition, when passing `self` by value.
Follow up of #6316
changelog: none
Initial support for Rust 2021.
Clippy treated Rust 2021 as Rust 2015, because 2018 was checked with `==` instead of `>=`. This fixes that, such that 2018-specific things are also enabled for 2021.
changelog: Added support for Rust 2021.
Clippy treated Rust 2021 as Rust 2015, because 2018 was checked with
`==` instead of `>=`. This fixes that, such that 2018-specific things
are also enabled for 2021.
- Adds optional default values to const generic parameters in the AST
and HIR
- Parses these optional default values
- Adds a `const_generics_defaults` feature gate
make clippy version number correspond to rustc version number.
clippy 0.1.50 corresponds to rustc 1.50.x
This bumps the clippy version number from 0.0.212 to 0.1.50
Fixes#6499
Notes:
I used `cargo --version` because that way we can honour the version set in the `rust-toolchain` file.
When we bump the bootstrap compiler from 1.50 to 1.51, the version numbers will have to be changed to 1.51 or the test will fail.
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changelog: make clippy version number correspond to rustc version number (rust 1.50.0 -> clippy 0.1.50)
The core issue was the usage of `reference_file_path.file_name()`, which
provided a non-existent path if the file to be updated was in a
subdirectory.
Instead we have to provide the whole path after 'tests/ui/' as the
'filename'. This part of the path is called `test_name` in the code now.
