src/tools/clippy/tests/ui/deref_addrof.fixed

   1 //@aux-build:proc_macros.rs
   2
   3 #![allow(clippy::return_self_not_must_use, clippy::useless_vec)]
   4 #![warn(clippy::deref_addrof)]
   5
   6 extern crate proc_macros;
   7 use proc_macros::inline_macros;
   8
   9 fn get_number() -> usize {
  10     10
  11 }
  12
  13 fn get_reference(n: &usize) -> &usize {
  14     n
  15 }
  16
  17 #[allow(clippy::double_parens)]
  18 #[allow(unused_variables, unused_parens)]
  19 fn main() {
  20     let a = 10;
  21     let aref = &a;
  22
  23     let b = a;
  24
  25     let b = get_number();
  26
  27     let b = *get_reference(&a);
  28
  29     let bytes: Vec<usize> = vec![1, 2, 3, 4];
  30     let b = bytes[1..2][0];
  31
  32     //This produces a suggestion of 'let b = (a);' which
  33     //will trigger the 'unused_parens' lint
  34     let b = (a);
  35
  36     let b = a;
  37
  38     #[rustfmt::skip]
  39     let b = a;
  40
  41     let b = &a;
  42
  43     let b = *aref;
  44
  45     let _ = unsafe { *core::ptr::addr_of!(a) };
  46 }
  47
  48 #[derive(Copy, Clone)]
  49 pub struct S;
  50 #[inline_macros]
  51 impl S {
  52     pub fn f(&self) -> &Self {
  53         inline!($(@expr self))
  54     }
  55     #[allow(unused_mut)] // mut will be unused, once the macro is fixed
  56     pub fn f_mut(mut self) -> Self {
  57         inline!($(@expr self))
  58     }
  59 }