rust/tests/compile-fail/toplevel_ref_arg.rs
2015-08-16 17:24:03 +05:30

18 lines
348 B
Rust

#![feature(plugin)]
#![plugin(clippy)]
#![deny(clippy)]
#![allow(unused)]
fn the_answer(ref mut x: u8) { //~ ERROR `ref` directly on a function argument is ignored
*x = 42;
}
fn main() {
let mut x = 0;
the_answer(x);
// Closures should not warn
let y = |ref x| { println!("{:?}", x) };
y(1u8);
println!("The answer is {}.", x);
}