blob: f1680e9e8884e93806f361bfd3a9b593111f7c90 (
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
|
// Test `@` patterns combined with `box` patterns.
#![feature(bindings_after_at)]
#![feature(move_ref_pattern)]
#![feature(box_patterns)]
#[derive(Copy, Clone)]
struct C;
fn c() -> C {
C
}
struct NC;
fn nc() -> NC {
NC
}
fn main() {
let a @ box &b = Box::new(&C);
//~^ ERROR use of moved value
let a @ box b = Box::new(C);
//~^ ERROR use of moved value
fn f1(a @ box &b: Box<&C>) {}
//~^ ERROR use of moved value
fn f2(a @ box b: Box<C>) {}
//~^ ERROR use of moved value
match Box::new(C) {
a @ box b => {} //~ ERROR use of moved value
}
let ref a @ box b = Box::new(NC); //~ ERROR cannot move out of value because it is borrowed
let ref a @ box ref mut b = Box::new(nc());
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
let ref a @ box ref mut b = Box::new(NC);
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
let ref a @ box ref mut b = Box::new(NC);
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
*b = NC;
let ref a @ box ref mut b = Box::new(NC);
//~^ ERROR cannot borrow value as mutable because it is also borrowed as immutable
//~| ERROR cannot borrow value as mutable because it is also borrowed as immutable
*b = NC;
drop(a);
let ref mut a @ box ref b = Box::new(NC);
//~^ ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
*a = Box::new(NC);
drop(b);
fn f5(ref mut a @ box ref b: Box<NC>) {
//~^ ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
*a = Box::new(NC);
drop(b);
}
match Box::new(nc()) {
ref mut a @ box ref b => {
//~^ ERROR cannot borrow value as immutable because it is also borrowed as mutable
//~| ERROR cannot borrow value as immutable because it is also borrowed as mutable
*a = Box::new(NC);
drop(b);
}
}
}
|
