mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-24 13:43:17 +00:00
35 lines
1 KiB
Rust
35 lines
1 KiB
Rust
#![feature(plugin)]
|
|
#![plugin(clippy)]
|
|
|
|
#![allow(unused_parens, unused_variables)]
|
|
#![deny(clippy, clippy_pedantic)]
|
|
|
|
fn id<T>(x: T) -> T { x }
|
|
|
|
fn first(x: (isize, isize)) -> isize { x.0 }
|
|
|
|
fn main() {
|
|
let mut x = 1;
|
|
let x = &mut x; //~ERROR: x is shadowed by itself in &mut x
|
|
let x = { x }; //~ERROR: x is shadowed by itself in { x }
|
|
let x = (&*x); //~ERROR: x is shadowed by itself in &*x
|
|
let x = { *x + 1 }; //~ERROR: x is shadowed by { *x + 1 } which reuses
|
|
let x = id(x); //~ERROR: x is shadowed by id(x) which reuses
|
|
let x = (1, x); //~ERROR: x is shadowed by (1, x) which reuses
|
|
let x = first(x); //~ERROR: x is shadowed by first(x) which reuses
|
|
let y = 1;
|
|
let x = y; //~ERROR: x is shadowed by y
|
|
|
|
let o = Some(1u8);
|
|
|
|
if let Some(p) = o { assert_eq!(1, p); }
|
|
match o {
|
|
Some(p) => p, // no error, because the p above is in its own scope
|
|
None => 0,
|
|
};
|
|
|
|
match (x, o) {
|
|
(1, Some(a)) | (a, Some(1)) => (), // no error though `a` appears twice
|
|
_ => (),
|
|
}
|
|
}
|