mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-15 01:17:16 +00:00
46 lines
1 KiB
Rust
46 lines
1 KiB
Rust
#![feature(plugin)]
|
|
#![plugin(clippy)]
|
|
|
|
#![allow(unused_variables)]
|
|
|
|
fn takes_an_immutable_reference(a: &i32) {
|
|
}
|
|
|
|
|
|
fn takes_a_mutable_reference(a: &mut i32) {
|
|
}
|
|
|
|
struct MyStruct;
|
|
|
|
impl MyStruct {
|
|
fn takes_an_immutable_reference(&self, a: &i32) {
|
|
}
|
|
|
|
fn takes_a_mutable_reference(&self, a: &mut i32) {
|
|
}
|
|
}
|
|
|
|
#[deny(unnecessary_mut_passed)]
|
|
fn main() {
|
|
// Functions
|
|
takes_an_immutable_reference(&mut 42); //~ERROR The function/method "takes_an_immutable_reference" doesn't need a mutable reference
|
|
|
|
// Methods
|
|
let my_struct = MyStruct;
|
|
my_struct.takes_an_immutable_reference(&mut 42); //~ERROR The function/method "takes_an_immutable_reference" doesn't need a mutable reference
|
|
|
|
|
|
// No error
|
|
|
|
// Functions
|
|
takes_an_immutable_reference(&42);
|
|
takes_a_mutable_reference(&mut 42);
|
|
let a = &mut 42;
|
|
takes_an_immutable_reference(a);
|
|
|
|
// Methods
|
|
my_struct.takes_an_immutable_reference(&42);
|
|
my_struct.takes_a_mutable_reference(&mut 42);
|
|
my_struct.takes_an_immutable_reference(a);
|
|
|
|
}
|