1 // aux-build:macro_rules.rs
3 #![allow(unused, clippy::no_effect, clippy::unnecessary_operation)]
4 #![warn(clippy::mut_mut)]
7 extern crate macro_rules;
9 fn fun(x: &mut &mut u32) -> bool {
13 fn less_fun(x: *mut *mut u32) {
17 macro_rules! mut_ptr {
23 #[allow(unused_mut, unused_variables)]
25 let mut x = &mut &mut 1u32;
31 let y: &mut &mut u32 = &mut &mut 2;
36 let y: &mut &mut &mut u32 = &mut &mut &mut 2;
40 let mut z = mut_ptr!(&mut 3u32);
44 let array = [5, 6, 7, 8, 9];
45 let mut args = array.iter().skip(2);
46 for &arg in &mut args {
57 // do not lint from an external macro