about summary refs log tree commit diff
path: root/tests/ui/lint/dead-code/offset-of.rs
blob: 89e9fd910cb641c6ded77cd611488100ac555fdb (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
#![deny(dead_code)]

use std::mem::offset_of;

struct Alpha {
    a: (),
    b: (), //~ ERROR field `b` is never read
    c: Beta,
}

struct Beta {
    a: (), //~ ERROR field `a` is never read
    b: (),
}

struct Gamma {
    a: (), //~ ERROR field `a` is never read
    b: (),
}

struct Delta {
    a: (),
    b: (), //~ ERROR field `b` is never read
}

trait Trait {
    type Assoc;
}
impl Trait for () {
    type Assoc = Delta;
}

struct Project<T: Trait> {
    a: u8, //~ ERROR field `a` is never read
    b: <T as Trait>::Assoc,
}

fn main() {
    offset_of!(Alpha, a);
    offset_of!(Alpha, c.b);
    offset_of!((Gamma,), 0.b);
    offset_of!(Project::<()>, b.a);
}