blob: 00661c51a78f96d65f4830b0c8c59ddda5ea6627 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#![allow(unused_variables, dead_code)]
fn takes_an_immutable_reference(a: &i32) {}
fn takes_a_mutable_reference(a: &mut i32) {}
mod issue11268 {
macro_rules! x {
($f:expr) => {
$f(&mut 1);
};
}
fn f() {
x!(super::takes_an_immutable_reference);
x!(super::takes_a_mutable_reference);
}
}
struct MyStruct;
impl MyStruct {
fn takes_an_immutable_reference(&self, a: &i32) {}
fn takes_a_mutable_reference(&self, a: &mut i32) {}
}
#[warn(clippy::unnecessary_mut_passed)]
fn main() {
// Functions
takes_an_immutable_reference(&mut 42);
let as_ptr: fn(&i32) = takes_an_immutable_reference;
as_ptr(&mut 42);
// Methods
let my_struct = MyStruct;
my_struct.takes_an_immutable_reference(&mut 42);
// No error
// Functions
takes_an_immutable_reference(&42);
let as_ptr: fn(&i32) = takes_an_immutable_reference;
as_ptr(&42);
takes_a_mutable_reference(&mut 42);
let as_ptr: fn(&mut i32) = takes_a_mutable_reference;
as_ptr(&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);
}
|
