rust-clippy/tests/ui/deref_addrof.rs

68 lines
1.1 KiB
Rust

// run-rustfix
#![allow(clippy::return_self_not_must_use)]
#![warn(clippy::deref_addrof)]
fn get_number() -> usize {
10
}
fn get_reference(n: &usize) -> &usize {
n
}
#[allow(clippy::double_parens)]
#[allow(unused_variables, unused_parens)]
fn main() {
let a = 10;
let aref = &a;
let b = *&a;
let b = *&get_number();
let b = *get_reference(&a);
let bytes: Vec<usize> = vec![1, 2, 3, 4];
let b = *&bytes[1..2][0];
//This produces a suggestion of 'let b = (a);' which
//will trigger the 'unused_parens' lint
let b = *&(a);
let b = *(&a);
#[rustfmt::skip]
let b = *((&a));
let b = *&&a;
let b = **&aref;
let _ = unsafe { *core::ptr::addr_of!(a) };
}
#[rustfmt::skip]
macro_rules! m {
($visitor: expr) => {
*& $visitor
};
}
#[rustfmt::skip]
macro_rules! m_mut {
($visitor: expr) => {
*& mut $visitor
};
}
#[derive(Copy, Clone)]
pub struct S;
impl S {
pub fn f(&self) -> &Self {
m!(self)
}
#[allow(unused_mut)] // mut will be unused, once the macro is fixed
pub fn f_mut(mut self) -> Self {
m_mut!(self)
}
}