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
|
//@ check-pass
//@ compile-flags: --cfg something
#![deny(unused_mut)]
extern "C" {
fn ffi(
#[allow(unused_mut)] a: i32,
#[cfg(something)] b: i32,
#[cfg_attr(something, cfg(nothing))] c: i32,
#[forbid(unused_mut)] d: i32,
#[deny(unused_mut)] #[warn(unused_mut)] ...
);
}
type FnType = fn(
#[allow(unused_mut)] a: i32,
#[cfg(something)] b: i32,
#[cfg_attr(something, cfg(nothing))] c: i32,
#[forbid(unused_mut)] d: i32,
#[deny(unused_mut)] #[warn(unused_mut)] e: i32
);
pub fn foo(
#[allow(unused_mut)] a: i32,
#[cfg(something)] b: i32,
#[cfg_attr(something, cfg(nothing))] c: i32,
#[forbid(unused_mut)] d: i32,
#[deny(unused_mut)] #[warn(unused_mut)] _e: i32
) {}
// self
struct SelfStruct {}
impl SelfStruct {
fn foo(
#[allow(unused_mut)] self,
#[cfg(something)] a: i32,
#[cfg_attr(something, cfg(nothing))]
#[deny(unused_mut)] b: i32,
) {}
}
struct RefStruct {}
impl RefStruct {
fn foo(
#[allow(unused_mut)] &self,
#[cfg(something)] a: i32,
#[cfg_attr(something, cfg(nothing))]
#[deny(unused_mut)] b: i32,
) {}
}
trait RefTrait {
fn foo(
#[forbid(unused_mut)] &self,
#[warn(unused_mut)] a: i32
) {}
}
impl RefTrait for RefStruct {
fn foo(
#[forbid(unused_mut)] &self,
#[warn(unused_mut)] a: i32
) {}
}
// Box<Self>
struct BoxSelfStruct {}
impl BoxSelfStruct {
fn foo(
#[allow(unused_mut)] self: Box<Self>,
#[cfg(something)] a: i32,
#[cfg_attr(something, cfg(nothing))]
#[deny(unused_mut)] b: i32,
) {}
}
trait BoxSelfTrait {
fn foo(
#[forbid(unused_mut)] self: Box<Self>,
#[warn(unused_mut)] a: i32
) {}
}
impl BoxSelfTrait for BoxSelfStruct {
fn foo(
#[forbid(unused_mut)] self: Box<Self>,
#[warn(unused_mut)] a: i32
) {}
}
fn main() {
let _: unsafe extern "C" fn(_, _, _, ...) = ffi;
let _: fn(_, _, _, _) = foo;
let _: FnType = |_, _, _, _| {};
let c = |
#[allow(unused_mut)] a: u32,
#[cfg(something)] b: i32,
#[cfg_attr(something, cfg(nothing))]
#[deny(unused_mut)] c: i32,
| {};
c(1, 2);
}
|
