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
|
warning: unreachable statement
--> $DIR/liveness-unused.rs:92:9
|
LL | continue;
| -------- any code following this expression is unreachable
LL | drop(*x as i32);
| ^^^^^^^^^^^^^^^^ unreachable statement
|
note: the lint level is defined here
--> $DIR/liveness-unused.rs:1:9
|
LL | #![warn(unused)]
| ^^^^^^
= note: `#[warn(unreachable_code)]` implied by `#[warn(unused)]`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:8:7
|
LL | fn f1(x: isize) {
| ^ help: if this is intentional, prefix it with an underscore: `_x`
|
note: the lint level is defined here
--> $DIR/liveness-unused.rs:2:9
|
LL | #![deny(unused_variables)]
| ^^^^^^^^^^^^^^^^
error: unused variable: `x`
--> $DIR/liveness-unused.rs:12:8
|
LL | fn f1b(x: &mut isize) {
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:20:9
|
LL | let x: isize;
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:25:9
|
LL | let x = 3;
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: variable `x` is assigned to, but never used
--> $DIR/liveness-unused.rs:30:13
|
LL | let mut x = 3;
| ^
|
= note: consider using `_x` instead
error: value assigned to `x` is never read
--> $DIR/liveness-unused.rs:32:5
|
LL | x += 4;
| ^
|
note: the lint level is defined here
--> $DIR/liveness-unused.rs:3:9
|
LL | #![deny(unused_assignments)]
| ^^^^^^^^^^^^^^^^^^
= help: maybe it is overwritten before being read?
error: variable `z` is assigned to, but never used
--> $DIR/liveness-unused.rs:37:13
|
LL | let mut z = 3;
| ^
|
= note: consider using `_z` instead
error: unused variable: `i`
--> $DIR/liveness-unused.rs:59:12
|
LL | Some(i) => {
| ^ help: if this is intentional, prefix it with an underscore: `_i`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:79:9
|
LL | for x in 1..10 { }
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:84:10
|
LL | for (x, _) in [1, 2, 3].iter().enumerate() { }
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: unused variable: `x`
--> $DIR/liveness-unused.rs:89:13
|
LL | for (_, x) in [1, 2, 3].iter().enumerate() {
| ^ help: if this is intentional, prefix it with an underscore: `_x`
error: variable `x` is assigned to, but never used
--> $DIR/liveness-unused.rs:112:9
|
LL | let x;
| ^
|
= note: consider using `_x` instead
error: value assigned to `x` is never read
--> $DIR/liveness-unused.rs:116:9
|
LL | x = 0;
| ^
|
= help: maybe it is overwritten before being read?
error: aborting due to 13 previous errors; 1 warning emitted
|