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
|
#![warn(clippy::needless_range_loop)]
static STATIC: [usize; 4] = [0, 1, 8, 16];
const CONST: [usize; 4] = [0, 1, 8, 16];
const MAX_LEN: usize = 42;
fn main() {
let mut vec = vec![1, 2, 3, 4];
let vec2 = vec![1, 2, 3, 4];
for i in 0..vec.len() {
println!("{}", vec[i]);
}
for i in 0..vec.len() {
let i = 42; // make a different `i`
println!("{}", vec[i]); // ok, not the `i` of the for-loop
}
for i in 0..vec.len() {
let _ = vec[i];
}
// ICE #746
for j in 0..4 {
println!("{:?}", STATIC[j]);
}
for j in 0..4 {
println!("{:?}", CONST[j]);
}
for i in 0..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 0..vec.len() {
// not an error, indexing more than one variable
println!("{} {}", vec[i], vec2[i]);
}
for i in 0..vec.len() {
println!("{}", vec2[i]);
}
for i in 5..vec.len() {
println!("{}", vec[i]);
}
for i in 0..MAX_LEN {
println!("{}", vec[i]);
}
for i in 0..=MAX_LEN {
println!("{}", vec[i]);
}
for i in 5..10 {
println!("{}", vec[i]);
}
for i in 5..=10 {
println!("{}", vec[i]);
}
for i in 5..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 5..10 {
println!("{} {}", vec[i], i);
}
// #2542
for i in 0..vec.len() {
vec[i] = Some(1).unwrap_or_else(|| panic!("error on {}", i));
}
// #3788
let test = Test {
inner: vec![1, 2, 3, 4],
};
for i in 0..2 {
println!("{}", test[i]);
}
}
struct Test {
inner: Vec<usize>,
}
impl std::ops::Index<usize> for Test {
type Output = usize;
fn index(&self, index: usize) -> &Self::Output {
&self.inner[index]
}
}
|