From: Miguel Ojeda <ojeda@xxxxxxxxxx>
commit 60fc1e6750133620e404d40b93df5afe32e3e6c6 upstream.
In beta Clippy (i.e. Rust 1.83.0), the `needless_lifetimes` lint has
been extended [1] to suggest eliding `impl` lifetimes, e.g.
error: the following explicit lifetimes could be elided: 'a
--> rust/kernel/list.rs:647:6
|
647 | impl<'a, T: ?Sized + ListItem<ID>, const ID: u64> FusedIterator for Iter<'a, T, ID> {}
| ^^ ^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
= note: `-D clippy::needless-lifetimes` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::needless_lifetimes)]`
help: elide the lifetimes
|
647 - impl<'a, T: ?Sized + ListItem<ID>, const ID: u64> FusedIterator for Iter<'a, T, ID> {}
647 + impl<T: ?Sized + ListItem<ID>, const ID: u64> FusedIterator for Iter<'_, T, ID> {}
A possibility would have been to clean them -- the RFC patch [2] did
this, while asking if we wanted these cleanups. There is an open issue
[3] in Clippy about being able to differentiate some of the new cases,
e.g. those that do not involve introducing `'_`. Thus it seems others
feel similarly.
Thus, for the time being, we decided to `allow` the lint.
Link: https://github.com/rust-lang/rust-clippy/pull/13286 [1]
Link: https://lore.kernel.org/rust-for-linux/20241012231300.397010-1-ojeda@xxxxxxxxxx/ [2]
Link: https://github.com/rust-lang/rust-clippy/issues/13514 [3]
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Reviewed-by: Andreas Hindborg <a.hindborg@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20241116181538.369355-1-ojeda@xxxxxxxxxx
Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Makefile | 1 +
1 file changed, 1 insertion(+)
--- a/Makefile
+++ b/Makefile
@@ -456,6 +456,7 @@ export rust_common_flags := --edition=20
-Wclippy::mut_mut \
-Wclippy::needless_bitwise_bool \
-Wclippy::needless_continue \
+ -Aclippy::needless_lifetimes \
-Wclippy::no_mangle_with_rust_abi \
-Wclippy::dbg_macro
Patches currently in stable-queue which might be from ojeda@xxxxxxxxxx are
queue-6.12/rust-allow-clippy-needless_lifetimes.patch
