rust-clippy/tests/ui/issue_4266.stderr
Nick Mathewson 3d41358a55 wrong_self_convention: Match SelfKind::No more restrictively
The `wrong_self_convention` lint uses a `SelfKind` type to decide
whether a method has the right kind of "self" for its name, or whether
the kind of "self" it has makes its name confusable for a method in
a common trait.  One possibility is `SelfKind::No`, which is supposed
to mean "No `self`".

Previously, SelfKind::No matched everything _except_ Self, including
references to Self.  This patch changes it to match Self, &Self, &mut
Self, Box<Self>, and so on.

For example, this kind of method was allowed before:

```
impl S {
    // Should trigger the lint, because
    // "methods called `is_*` usually take `self` by reference or no `self`"
    fn is_foo(&mut self) -> bool { todo!() }
}
```

But since SelfKind::No matched "&mut self", no lint was triggered
(see #8142).

With this patch, the code above now gives a lint as expected.

Fixes #8142

changelog: [`wrong_self_convention`] rejects `self` references in more cases
2021-12-31 23:39:40 -05:00

25 lines
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Text

error: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
--> $DIR/issue_4266.rs:3:1
|
LL | async fn sink1<'a>(_: &'a str) {} // lint
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::needless-lifetimes` implied by `-D warnings`
error: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
--> $DIR/issue_4266.rs:7:1
|
LL | async fn one_to_one<'a>(s: &'a str) -> &'a str {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: methods called `new` usually take no `self`
--> $DIR/issue_4266.rs:27:22
|
LL | pub async fn new(&mut self) -> Self {
| ^^^^^^^^^
|
= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
= help: consider choosing a less ambiguous name
error: aborting due to 3 previous errors