rust/tests/compile-fail/mut_mut.rs

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#![feature(plugin)]
#![plugin(clippy)]
//#![plugin(regex_macros)]
//extern crate regex;
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#[deny(mut_mut)]
fn fun(x : &mut &mut u32) -> bool { //~ERROR
**x > 0
}
macro_rules! mut_ptr {
($p:expr) => { &mut $p }
}
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#[deny(mut_mut)]
#[allow(unused_mut, unused_variables)]
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fn main() {
let mut x = &mut &mut 1u32; //~ERROR
{
let mut y = &mut x; //~ERROR
}
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if fun(x) {
let y : &mut &mut &mut u32 = &mut &mut &mut 2;
//~^ ERROR
//~^^ ERROR
//~^^^ ERROR
//~^^^^ ERROR
***y + **x;
}
let mut z = mut_ptr!(&mut 3u32); //~ERROR
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}