blob: 8f5a4c41ef20dcd24e7312db76ca22a7ee0f4e4c (
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
|
#![no_std]
#![allow(unused_variables)]
#![allow(non_camel_case_types)]
#![allow(non_upper_case_globals)]
#![deny(dead_code)]
#![crate_type="lib"]
pub use foo2::Bar2;
mod foo {
pub struct Bar; //~ ERROR: struct `Bar` is never constructed
}
mod foo2 {
pub struct Bar2;
}
pub static pub_static: isize = 0;
static priv_static: isize = 0; //~ ERROR: static `priv_static` is never used
const used_static: isize = 0;
pub static used_static2: isize = used_static;
const USED_STATIC: isize = 0;
const STATIC_USED_IN_ENUM_DISCRIMINANT: isize = 10;
pub const pub_const: isize = 0;
const priv_const: isize = 0; //~ ERROR: constant `priv_const` is never used
const used_const: isize = 0;
pub const used_const2: isize = used_const;
const USED_CONST: isize = 1;
const CONST_USED_IN_ENUM_DISCRIMINANT: isize = 11;
pub type typ = *const UsedStruct4;
pub struct PubStruct;
struct PrivStruct; //~ ERROR: struct `PrivStruct` is never constructed
struct UsedStruct1 {
#[allow(dead_code)]
x: isize
}
struct UsedStruct2(isize);
struct UsedStruct3;
pub struct UsedStruct4;
// this struct is never used directly, but its method is, so we don't want
// to warn it
struct SemiUsedStruct;
impl SemiUsedStruct {
fn la_la_la() {}
}
struct StructUsedAsField;
pub struct StructUsedInEnum;
struct StructUsedInGeneric;
pub struct PubStruct2 {
#[allow(dead_code)]
struct_used_as_field: *const StructUsedAsField
}
pub enum pub_enum { foo1, bar1 }
pub enum pub_enum2 { a(*const StructUsedInEnum) }
pub enum pub_enum3 {
Foo = STATIC_USED_IN_ENUM_DISCRIMINANT,
Bar = CONST_USED_IN_ENUM_DISCRIMINANT,
}
enum priv_enum { foo2, bar2 } //~ ERROR: enum `priv_enum` is never used
enum used_enum {
foo3,
bar3 //~ ERROR variant `bar3` is never constructed
}
fn f<T>() {}
pub fn pub_fn() {
used_fn();
let used_struct1 = UsedStruct1 { x: 1 };
let used_struct2 = UsedStruct2(1);
let used_struct3 = UsedStruct3;
let e = used_enum::foo3;
SemiUsedStruct::la_la_la();
let i = 1;
match i {
USED_STATIC => (),
USED_CONST => (),
_ => ()
}
f::<StructUsedInGeneric>();
}
fn priv_fn() { //~ ERROR: function `priv_fn` is never used
let unused_struct = PrivStruct;
}
fn used_fn() {}
fn foo() { //~ ERROR: function `foo` is never used
bar();
let unused_enum = priv_enum::foo2;
}
fn bar() { //~ ERROR: function `bar` is never used
foo();
}
fn baz() -> impl Copy { //~ ERROR: function `baz` is never used
"I'm unused, too"
}
// Code with #[allow(dead_code)] should be marked live (and thus anything it
// calls is marked live)
#[allow(dead_code)]
fn g() { h(); }
fn h() {}
|
