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
|
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Matching on a DST struct should not trigger an LLVM assertion.
struct Foo<T: ?Sized> {
a: i32,
inner: T
}
trait Get {
fn get(&self) -> i32;
}
impl Get for i32 {
fn get(&self) -> i32 {
*self
}
}
fn check_val(val: &Foo<[u8]>) {
match *val {
Foo { a, .. } => {
assert_eq!(a, 32);
}
}
}
fn check_dst_val(val: &Foo<[u8]>) {
match *val {
Foo { ref inner, .. } => {
assert_eq!(inner, [1, 2, 3]);
}
}
}
fn check_both(val: &Foo<[u8]>) {
match *val {
Foo { a, ref inner } => {
assert_eq!(a, 32);
assert_eq!(inner, [1, 2, 3]);
}
}
}
fn check_trait_obj(val: &Foo<Get>) {
match *val {
Foo { a, ref inner } => {
assert_eq!(a, 32);
assert_eq!(inner.get(), 32);
}
}
}
fn main() {
let foo: &Foo<[u8]> = &Foo { a: 32, inner: [1, 2, 3] };
check_val(foo);
check_dst_val(foo);
check_both(foo);
let foo: &Foo<Get> = &Foo { a: 32, inner: 32 };
check_trait_obj(foo);
}
|
