Closed
Description
Code
fn main() {
let(mut _x): i8 = 0;
let( mut _x): i8 = 0;
let(_x): i8 = 0;
}
Current output
warning: unnecessary parentheses around pattern
--> src/main.rs:2:8
|
2 | let(mut _x): i8 = 0;
| ^ ^
|
= note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
2 - let(mut _x): i8 = 0;
2 + letmut _x: i8 = 0;
|
warning: unnecessary parentheses around pattern
--> src/main.rs:3:8
|
3 | let( mut _x): i8 = 0;
| ^^ ^
|
help: remove these parentheses
|
3 - let( mut _x): i8 = 0;
3 + letmut _x: i8 = 0;
|
warning: unnecessary parentheses around pattern
--> src/main.rs:4:8
|
4 | let(_x): i8 = 0;
| ^ ^
|
help: remove these parentheses
|
4 - let(_x): i8 = 0;
4 + let_x: i8 = 0;
|
Desired output
warning: unnecessary parentheses around pattern
--> src/main.rs:2:8
|
2 | let(mut _x): i8 = 0;
| ^ ^
|
= note: `#[warn(unused_parens)]` on by default
help: remove these parentheses
|
2 - let(mut _x): i8 = 0;
2 + let mut _x: i8 = 0;
|
warning: unnecessary parentheses around pattern
--> src/main.rs:3:8
|
3 | let( mut _x): i8 = 0;
| ^^ ^
|
help: remove these parentheses
|
3 - let( mut _x): i8 = 0;
3 + let mut _x: i8 = 0;
|
warning: unnecessary parentheses around pattern
--> src/main.rs:4:8
|
4 | let(_x): i8 = 0;
| ^ ^
|
help: remove these parentheses
|
4 - let(_x): i8 = 0;
4 + let _x: i8 = 0;
|
Rationale and extra context
Rustc suggests incorrect fixes for #[warn(unused_parens)] for these patterns.
Other cases
No response
Anything else?
Rustc version:
rustc 1.75.0-nightly (e5cfc5547 2023-10-28)
binary: rustc
commit-hash: e5cfc55477eceed1317a02189fdf77a4a98f2124
commit-date: 2023-10-28
host: x86_64-pc-windows-gnu
release: 1.75.0-nightly
LLVM version: 17.0.3
(the same issue with the stable 1.73.0 rustc).