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//@aux-build:proc_macros.rs
#![warn(clippy::mut_mut)]
#![allow(unused)]
#![allow(
clippy::no_effect,
clippy::uninlined_format_args,
clippy::unnecessary_operation,
clippy::needless_pass_by_ref_mut
)]
extern crate proc_macros;
use proc_macros::{external, inline_macros};
fn fun(x: &mut &mut u32) -> bool {
**x > 0
}
fn less_fun(x: *mut *mut u32) {
let y = x;
}
macro_rules! mut_ptr {
($p:expr) => {
&mut $p
};
}
#[allow(unused_mut, unused_variables)]
#[inline_macros]
fn main() {
let mut x = &mut &mut 1u32;
{
let mut y = &mut x;
}
if fun(x) {
let y: &mut &mut u32 = &mut &mut 2;
**y + **x;
}
if fun(x) {
let y: &mut &mut &mut u32 = &mut &mut &mut 2;
***y + **x;
}
let mut z = inline!(&mut $(&mut 3u32));
}
fn issue939() {
let array = [5, 6, 7, 8, 9];
let mut args = array.iter().skip(2);
for &arg in &mut args {
println!("{}", arg);
}
let args = &mut args;
for arg in args {
println!(":{}", arg);
}
}
fn issue6922() {
// do not lint from an external macro
external!(let mut_mut_ty: &mut &mut u32 = &mut &mut 1u32;);
}
mod issue9035 {
use std::fmt::Display;
struct Foo<'a> {
inner: &'a mut dyn Display,
}
impl Foo<'_> {
fn foo(&mut self) {
let hlp = &mut self.inner;
bar(hlp);
}
}
fn bar(_: &mut impl Display) {}
}
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