rust/tests/compile-fail/mut_mut.rs

34 lines
607 B
Rust

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