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rust-clippy/tests/ui/toplevel_ref_arg.rs
Philipp Hansch 158aa39a7c
Allow allowing of toplevel_ref_arg lint
I'm not sure why some lints need the `HirId` to be able to recognize the
lint level attributes, but this commit makes the lint level attributes
work for `toplevel_ref_arg`.
2019-04-19 15:18:32 +02:00

29 lines
539 B
Rust

#![warn(clippy::all)]
#![allow(unused)]
fn the_answer(ref mut x: u8) {
*x = 42;
}
fn main() {
let mut x = 0;
the_answer(x);
// Closures should not warn
let y = |ref x| println!("{:?}", x);
y(1u8);
let ref x = 1;
let ref y: (&_, u8) = (&1, 2);
let ref z = 1 + 2;
let ref mut z = 1 + 2;
let (ref x, _) = (1, 2); // ok, not top level
println!("The answer is {}.", x);
// Make sure that allowing the lint works
#[allow(clippy::toplevel_ref_arg)]
let ref mut x = 1_234_543;
}