summaryrefslogtreecommitdiffstats
path: root/src/test/ui/rfc-2497-if-let-chains/irrefutable-lets.disallowed.stderr
blob: d1d5288aea31c25a1a649a321c87ce719b893777 (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
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
error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:13:8
   |
LL |     if let first = &opt && let Some(ref second) = first && let None = second.start {}
   |        ^^^^^^^^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/irrefutable-lets.rs:6:30
   |
LL | #![cfg_attr(disallowed, deny(irrefutable_let_patterns))]
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: irrefutable `if let` patterns
  --> $DIR/irrefutable-lets.rs:19:8
   |
LL |     if let first = &opt && let (a, b) = (1, 2) {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: these patterns will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`

error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:22:8
   |
LL |     if let first = &opt && let Some(ref second) = first && let None = second.start && let v = 0 {}
   |        ^^^^^^^^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: trailing irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:22:87
   |
LL |     if let first = &opt && let Some(ref second) = first && let None = second.start && let v = 0 {}
   |                                                                                       ^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it into the body

error: trailing irrefutable patterns in let chain
  --> $DIR/irrefutable-lets.rs:26:37
   |
LL |     if let Some(ref first) = opt && let second = first && let _third = second {}
   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: these patterns will always match
   = help: consider moving them into the body

error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:29:8
   |
LL |     if let Range { start: local_start, end: _ } = (None..Some(1)) && let None = local_start {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:32:8
   |
LL |     if let (a, b, c) = (Some(1), Some(1), Some(1)) && let None = Some(1) {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:35:8
   |
LL |     if let first = &opt && let None = Some(1) {}
   |        ^^^^^^^^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: irrefutable `let` patterns
  --> $DIR/irrefutable-lets.rs:44:28
   |
LL |         Some(ref first) if let second = first && let _third = second && let v = 4 + 4 => {},
   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: these patterns will always match, so the `let` is useless
   = help: consider removing `let`

error: leading irrefutable pattern in let chain
  --> $DIR/irrefutable-lets.rs:50:28
   |
LL |         Some(ref first) if let Range { start: local_start, end: _ } = first
   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this pattern will always match
   = help: consider moving it outside of the construct

error: irrefutable `while let` patterns
  --> $DIR/irrefutable-lets.rs:59:11
   |
LL |     while let first = &opt && let (a, b) = (1, 2) {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: these patterns will always match, so the loop will never exit
   = help: consider instead using a `loop { ... }` with a `let` inside it

error: trailing irrefutable patterns in let chain
  --> $DIR/irrefutable-lets.rs:62:40
   |
LL |     while let Some(ref first) = opt && let second = first && let _third = second {}
   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: these patterns will always match
   = help: consider moving them into the body

error: aborting due to 12 previous errors