blob: 54dd46ba59f104a1172d14c9363b09b08ad79627 (
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// run-rustfix
#![warn(clippy::unnecessary_cast)]
#![allow(
unused_must_use,
clippy::borrow_as_ptr,
clippy::no_effect,
clippy::nonstandard_macro_braces,
clippy::unnecessary_operation
)]
#[rustfmt::skip]
fn main() {
// Test cast_unnecessary
1i32 as i32;
1f32 as f32;
false as bool;
&1i32 as &i32;
-1_i32 as i32;
- 1_i32 as i32;
-1f32 as f32;
1_i32 as i32;
1_f32 as f32;
// macro version
macro_rules! foo {
($a:ident, $b:ident) => {
#[allow(unused)]
pub fn $a() -> $b {
1 as $b
}
};
}
foo!(a, i32);
foo!(b, f32);
foo!(c, f64);
// do not lint cast to cfg-dependant type
1 as std::os::raw::c_char;
// do not lint cast to alias type
1 as I32Alias;
&1 as &I32Alias;
// issue #9960
macro_rules! bind_var {
($id:ident, $e:expr) => {{
let $id = 0usize;
let _ = $e != 0usize;
let $id = 0isize;
let _ = $e != 0usize;
}}
}
bind_var!(x, (x as usize) + 1);
}
type I32Alias = i32;
mod fixable {
#![allow(dead_code)]
fn main() {
// casting integer literal to float is unnecessary
100 as f32;
100 as f64;
100_i32 as f64;
let _ = -100 as f32;
let _ = -100 as f64;
let _ = -100_i32 as f64;
100. as f32;
100. as f64;
// Should not trigger
#[rustfmt::skip]
let v = vec!(1);
&v as &[i32];
0x10 as f32;
0o10 as f32;
0b10 as f32;
0x11 as f64;
0o11 as f64;
0b11 as f64;
1 as u32;
0x10 as i32;
0b10 as usize;
0o73 as u16;
1_000_000_000 as u32;
1.0 as f64;
0.5 as f32;
1.0 as u16;
let _ = -1 as i32;
let _ = -1.0 as f32;
let _ = 1 as I32Alias;
let _ = &1 as &I32Alias;
let x = 1i32;
let _ = &(x as i32);
}
type I32Alias = i32;
fn issue_9380() {
let _: i32 = -(1) as i32;
let _: f32 = -(1) as f32;
let _: i64 = -(1) as i64;
let _: i64 = -(1.0) as i64;
let _ = -(1 + 1) as i64;
}
fn issue_9563() {
let _: f64 = (-8.0 as f64).exp();
#[allow(clippy::precedence)]
let _: f64 = -(8.0 as f64).exp(); // should suggest `-8.0_f64.exp()` here not to change code behavior
}
fn issue_9562_non_literal() {
fn foo() -> f32 {
0.
}
let _num = foo() as f32;
}
fn issue_9603() {
let _: f32 = -0x400 as f32;
}
}
|
