blob: 24022450406a7a32e9da535ce7f275aee6d1c3d2 (
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#![feature(trait_upcasting)]
#![allow(incomplete_features)]
trait Foo {
fn a(&self) -> i32 {
10
}
fn z(&self) -> i32 {
11
}
fn y(&self) -> i32 {
12
}
}
trait Bar {
fn b(&self) -> i32 {
20
}
fn w(&self) -> i32 {
21
}
}
trait Baz {
fn c(&self) -> i32 {
30
}
}
impl Foo for i32 {
fn a(&self) -> i32 {
100
}
}
impl Bar for i32 {
fn b(&self) -> i32 {
200
}
}
impl Baz for i32 {
fn c(&self) -> i32 {
300
}
}
fn main() {
let baz: &dyn Baz = &1;
let _: &dyn std::fmt::Debug = baz;
//~^ ERROR mismatched types [E0308]
let _: &dyn Send = baz;
//~^ ERROR mismatched types [E0308]
let _: &dyn Sync = baz;
//~^ ERROR mismatched types [E0308]
let bar: &dyn Bar = baz;
//~^ ERROR mismatched types [E0308]
let _: &dyn std::fmt::Debug = bar;
//~^ ERROR mismatched types [E0308]
let _: &dyn Send = bar;
//~^ ERROR mismatched types [E0308]
let _: &dyn Sync = bar;
//~^ ERROR mismatched types [E0308]
let foo: &dyn Foo = baz;
//~^ ERROR mismatched types [E0308]
let _: &dyn std::fmt::Debug = foo;
//~^ ERROR mismatched types [E0308]
let _: &dyn Send = foo;
//~^ ERROR mismatched types [E0308]
let _: &dyn Sync = foo;
//~^ ERROR mismatched types [E0308]
let foo: &dyn Foo = bar;
//~^ ERROR mismatched types [E0308]
let _: &dyn std::fmt::Debug = foo;
//~^ ERROR mismatched types [E0308]
let _: &dyn Send = foo;
//~^ ERROR mismatched types [E0308]
let _: &dyn Sync = foo;
//~^ ERROR mismatched types [E0308]
}
|
