mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
9b3fcf9ad4
When encountering
```rust
struct Foo;
struct Bar;
impl From<Bar> for Foo {
fn from(_: Bar) -> Self { Foo }
}
fn qux(_: impl From<Bar>) {}
fn main() {
qux(Bar.into());
}
```
Suggest removing `.into()`:
```
error[E0283]: type annotations needed
--> f100.rs:8:13
|
8 | qux(Bar.into());
| --- ^^^^
| |
| required by a bound introduced by this call
|
= note: cannot satisfy `_: From<Bar>`
note: required by a bound in `qux`
--> f100.rs:6:16
|
6 | fn qux(_: impl From<Bar>) {}
| ^^^^^^^^^ required by this bound in `qux`
help: try using a fully qualified path to specify the expected types
|
8 | qux(<Bar as Into<T>>::into(Bar));
| +++++++++++++++++++++++ ~
help: consider removing this method call, as the receiver has type `Bar` and `Bar: From<Bar>` can be fulfilled
|
8 - qux(Bar.into());
8 + qux(Bar);
|
```
Fix #71252
12 lines
380 B
Rust
12 lines
380 B
Rust
struct Foo;
|
|
struct Bar;
|
|
impl From<Bar> for Foo {
|
|
fn from(_: Bar) -> Self { Foo }
|
|
}
|
|
fn qux(_: impl From<Bar>) {}
|
|
fn main() {
|
|
qux(Bar.into()); //~ ERROR type annotations needed
|
|
//~| HELP try using a fully qualified path to specify the expected types
|
|
//~| HELP consider removing this method call, as the receiver has type `Bar` and `Bar: From<Bar>` trivially holds
|
|
}
|