src/tools/clippy/tests/ui/functions.rs

   1 #![warn(clippy::all)]
   2 #![allow(dead_code)]
   3 #![allow(unused_unsafe, clippy::missing_safety_doc)]
   4
   5 // TOO_MANY_ARGUMENTS
   6 fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
   7
   8 fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
   9
  10 #[rustfmt::skip]
  11 fn bad_multiline(
  12     one: u32,
  13     two: u32,
  14     three: &str,
  15     four: bool,
  16     five: f32,
  17     six: f32,
  18     seven: bool,
  19     eight: ()
  20 ) {
  21     let _one = one;
  22     let _two = two;
  23     let _three = three;
  24     let _four = four;
  25     let _five = five;
  26     let _six = six;
  27     let _seven = seven;
  28 }
  29
  30 // don't lint extern fns
  31 extern "C" fn extern_fn(
  32     _one: u32,
  33     _two: u32,
  34     _three: *const u8,
  35     _four: bool,
  36     _five: f32,
  37     _six: f32,
  38     _seven: bool,
  39     _eight: *const std::ffi::c_void,
  40 ) {
  41 }
  42
  43 pub trait Foo {
  44     fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool);
  45     fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ());
  46
  47     fn ptr(p: *const u8);
  48 }
  49
  50 pub struct Bar;
  51
  52 impl Bar {
  53     fn good_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
  54     fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
  55 }
  56
  57 // ok, we don’t want to warn implementations
  58 impl Foo for Bar {
  59     fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
  60     fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
  61
  62     fn ptr(p: *const u8) {
  63         println!("{}", unsafe { *p });
  64         println!("{:?}", unsafe { p.as_ref() });
  65         unsafe { std::ptr::read(p) };
  66     }
  67 }
  68
  69 // NOT_UNSAFE_PTR_ARG_DEREF
  70
  71 fn private(p: *const u8) {
  72     println!("{}", unsafe { *p });
  73 }
  74
  75 pub fn public(p: *const u8) {
  76     println!("{}", unsafe { *p });
  77     println!("{:?}", unsafe { p.as_ref() });
  78     unsafe { std::ptr::read(p) };
  79 }
  80
  81 impl Bar {
  82     fn private(self, p: *const u8) {
  83         println!("{}", unsafe { *p });
  84     }
  85
  86     pub fn public(self, p: *const u8) {
  87         println!("{}", unsafe { *p });
  88         println!("{:?}", unsafe { p.as_ref() });
  89         unsafe { std::ptr::read(p) };
  90     }
  91
  92     pub fn public_ok(self, p: *const u8) {
  93         if !p.is_null() {
  94             println!("{:p}", p);
  95         }
  96     }
  97
  98     pub unsafe fn public_unsafe(self, p: *const u8) {
  99         println!("{}", unsafe { *p });
 100         println!("{:?}", unsafe { p.as_ref() });
 101     }
 102 }
 103
 104 fn main() {}