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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
// Copyright 2014 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.
#![feature(box_syntax)]
struct A { a: isize, b: Box<isize> }
fn deref_after_move() {
let x = A { a: 1, b: box 2 };
drop(x.b);
drop(*x.b); //~ ERROR use of moved value: `*x.b`
}
fn deref_after_fu_move() {
let x = A { a: 1, b: box 2 };
let y = A { a: 3, .. x };
drop(*x.b); //~ ERROR use of moved value: `*x.b`
}
fn borrow_after_move() {
let x = A { a: 1, b: box 2 };
drop(x.b);
let p = &x.b; //~ ERROR use of moved value: `x.b`
drop(**p);
}
fn borrow_after_fu_move() {
let x = A { a: 1, b: box 2 };
let _y = A { a: 3, .. x };
let p = &x.b; //~ ERROR use of moved value: `x.b`
drop(**p);
}
fn move_after_borrow() {
let x = A { a: 1, b: box 2 };
let p = &x.b;
drop(x.b); //~ ERROR cannot move out of `x.b` because it is borrowed
drop(**p);
}
fn fu_move_after_borrow() {
let x = A { a: 1, b: box 2 };
let p = &x.b;
let _y = A { a: 3, .. x }; //~ ERROR cannot move out of `x.b` because it is borrowed
drop(**p);
}
fn mut_borrow_after_mut_borrow() {
let mut x = A { a: 1, b: box 2 };
let p = &mut x.a;
let q = &mut x.a; //~ ERROR cannot borrow `x.a` as mutable more than once at a time
drop(*p);
drop(*q);
}
fn move_after_move() {
let x = A { a: 1, b: box 2 };
drop(x.b);
drop(x.b); //~ ERROR use of moved value: `x.b`
}
fn move_after_fu_move() {
let x = A { a: 1, b: box 2 };
let _y = A { a: 3, .. x };
drop(x.b); //~ ERROR use of moved value: `x.b`
}
fn fu_move_after_move() {
let x = A { a: 1, b: box 2 };
drop(x.b);
let _z = A { a: 3, .. x }; //~ ERROR use of moved value: `x.b`
}
fn fu_move_after_fu_move() {
let x = A { a: 1, b: box 2 };
let _y = A { a: 3, .. x };
let _z = A { a: 4, .. x }; //~ ERROR use of moved value: `x.b`
}
// The following functions aren't yet accepted, but they should be.
fn copy_after_field_assign_after_uninit() {
let mut x: A;
x.a = 1;
drop(x.a); //~ ERROR use of possibly uninitialized variable: `x.a`
}
fn borrow_after_field_assign_after_uninit() {
let mut x: A;
x.a = 1;
let p = &x.a; //~ ERROR use of possibly uninitialized variable: `x.a`
drop(*p);
}
fn move_after_field_assign_after_uninit() {
let mut x: A;
x.b = box 1;
drop(x.b); //~ ERROR use of possibly uninitialized variable: `x.b`
}
fn main() {
deref_after_move();
deref_after_fu_move();
borrow_after_move();
borrow_after_fu_move();
move_after_borrow();
fu_move_after_borrow();
mut_borrow_after_mut_borrow();
move_after_move();
move_after_fu_move();
fu_move_after_move();
fu_move_after_fu_move();
copy_after_field_assign_after_uninit();
borrow_after_field_assign_after_uninit();
move_after_field_assign_after_uninit();
}
|
