summaryrefslogtreecommitdiffstats
path: root/src/tools/clippy/tests/ui/functions.rs
blob: 5521870eaecf761af9b0f50bdbdd941d63aaa551 (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
#![warn(clippy::all)]
#![allow(dead_code)]
#![allow(unused_unsafe, clippy::missing_safety_doc)]

// TOO_MANY_ARGUMENTS
fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}

fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}

#[rustfmt::skip]
fn bad_multiline(
    one: u32,
    two: u32,
    three: &str,
    four: bool,
    five: f32,
    six: f32,
    seven: bool,
    eight: ()
) {
    let _one = one;
    let _two = two;
    let _three = three;
    let _four = four;
    let _five = five;
    let _six = six;
    let _seven = seven;
}

// don't lint extern fns
extern "C" fn extern_fn(
    _one: u32,
    _two: u32,
    _three: *const u8,
    _four: bool,
    _five: f32,
    _six: f32,
    _seven: bool,
    _eight: *const std::ffi::c_void,
) {
}

pub trait Foo {
    fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool);
    fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ());

    fn ptr(p: *const u8);
}

pub struct Bar;

impl Bar {
    fn good_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
    fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
}

// ok, we don’t want to warn implementations
impl Foo for Bar {
    fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
    fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}

    fn ptr(p: *const u8) {
        println!("{}", unsafe { *p });
        println!("{:?}", unsafe { p.as_ref() });
        unsafe { std::ptr::read(p) };
    }
}

// NOT_UNSAFE_PTR_ARG_DEREF

fn private(p: *const u8) {
    println!("{}", unsafe { *p });
}

pub fn public(p: *const u8) {
    println!("{}", unsafe { *p });
    println!("{:?}", unsafe { p.as_ref() });
    unsafe { std::ptr::read(p) };
}

type Alias = *const u8;

pub fn type_alias(p: Alias) {
    println!("{}", unsafe { *p });
    println!("{:?}", unsafe { p.as_ref() });
    unsafe { std::ptr::read(p) };
}

impl Bar {
    fn private(self, p: *const u8) {
        println!("{}", unsafe { *p });
    }

    pub fn public(self, p: *const u8) {
        println!("{}", unsafe { *p });
        println!("{:?}", unsafe { p.as_ref() });
        unsafe { std::ptr::read(p) };
    }

    pub fn public_ok(self, p: *const u8) {
        if !p.is_null() {
            println!("{:p}", p);
        }
    }

    pub unsafe fn public_unsafe(self, p: *const u8) {
        println!("{}", unsafe { *p });
        println!("{:?}", unsafe { p.as_ref() });
    }
}

fn main() {}