1 #![warn(clippy::drop_copy, clippy::forget_copy)]
2 #![allow(clippy::toplevel_ref_arg, clippy::drop_ref, clippy::forget_ref, unused_mut)]
3
4 use std::mem::{drop, forget};
5 use std::vec::Vec;
6
7 #[derive(Copy, Clone)]
8 struct SomeStruct {}
9
10 struct AnotherStruct {
11 x: u8,
12 y: u8,
13 z: Vec<u8>,
14 }
15
16 impl Clone for AnotherStruct {
clone(&self) -> AnotherStruct17 fn clone(&self) -> AnotherStruct {
18 AnotherStruct {
19 x: self.x,
20 y: self.y,
21 z: self.z.clone(),
22 }
23 }
24 }
25
main()26 fn main() {
27 let s1 = SomeStruct {};
28 let s2 = s1;
29 let s3 = &s1;
30 let mut s4 = s1;
31 let ref s5 = s1;
32
33 drop(s1);
34 drop(s2);
35 drop(s3);
36 drop(s4);
37 drop(s5);
38
39 forget(s1);
40 forget(s2);
41 forget(s3);
42 forget(s4);
43 forget(s5);
44
45 let a1 = AnotherStruct {
46 x: 255,
47 y: 0,
48 z: vec![1, 2, 3],
49 };
50 let a2 = &a1;
51 let mut a3 = a1.clone();
52 let ref a4 = a1;
53 let a5 = a1.clone();
54
55 drop(a2);
56 drop(a3);
57 drop(a4);
58 drop(a5);
59
60 forget(a2);
61 let a3 = &a1;
62 forget(a3);
63 forget(a4);
64 let a5 = a1.clone();
65 forget(a5);
66 }
67