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

   1
   2
   3
   4 #![warn(clippy)]
   5 #![allow(dead_code)]
   6 #![allow(unused_unsafe)]
   7
   8 // TOO_MANY_ARGUMENTS
   9 fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
  10
  11 fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {
  12 }
  13
  14 // don't lint extern fns
  15 extern fn extern_fn(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
  16
  17 pub trait Foo {
  18     fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool);
  19     fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ());
  20
  21     fn ptr(p: *const u8);
  22 }
  23
  24 pub struct Bar;
  25
  26 impl Bar {
  27     fn good_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
  28     fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
  29 }
  30
  31 // ok, we don’t want to warn implementations
  32 impl Foo for Bar {
  33     fn good(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool) {}
  34     fn bad(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
  35
  36     fn ptr(p: *const u8) {
  37         println!("{}", unsafe { *p });
  38         println!("{:?}", unsafe { p.as_ref() });
  39         unsafe { std::ptr::read(p) };
  40     }
  41 }
  42
  43 // NOT_UNSAFE_PTR_ARG_DEREF
  44
  45 fn private(p: *const u8) {
  46     println!("{}", unsafe { *p });
  47 }
  48
  49 pub fn public(p: *const u8) {
  50     println!("{}", unsafe { *p });
  51     println!("{:?}", unsafe { p.as_ref() });
  52     unsafe { std::ptr::read(p) };
  53 }
  54
  55 impl Bar {
  56     fn private(self, p: *const u8) {
  57         println!("{}", unsafe { *p });
  58     }
  59
  60     pub fn public(self, p: *const u8) {
  61         println!("{}", unsafe { *p });
  62         println!("{:?}", unsafe { p.as_ref() });
  63         unsafe { std::ptr::read(p) };
  64     }
  65
  66     pub fn public_ok(self, p: *const u8) {
  67         if !p.is_null() {
  68             println!("{:p}", p);
  69         }
  70     }
  71
  72     pub unsafe fn public_unsafe(self, p: *const u8) {
  73         println!("{}", unsafe { *p });
  74         println!("{:?}", unsafe { p.as_ref() });
  75     }
  76 }
  77
  78 fn main() {}