rust-clippy/tests/ui/shadow.rs
2018-10-11 12:16:22 +02:00

48 lines
1.2 KiB
Rust

// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![warn(clippy::all, clippy::pedantic, clippy::shadow_same, clippy::shadow_reuse, clippy::shadow_unrelated)]
#![allow(unused_parens, unused_variables, clippy::missing_docs_in_private_items)]
fn id<T>(x: T) -> T { x }
fn first(x: (isize, isize)) -> isize { x.0 }
fn main() {
let mut x = 1;
let x = &mut x;
let x = { x };
let x = (&*x);
let x = { *x + 1 };
let x = id(x);
let x = (1, x);
let x = first(x);
let y = 1;
let x = y;
let x;
x = 42;
let o = Some(1_u8);
if let Some(p) = o { assert_eq!(1, p); }
match o {
Some(p) => p, // no error, because the p above is in its own scope
None => 0,
};
match (x, o) {
(1, Some(a)) | (a, Some(1)) => (), // no error though `a` appears twice
_ => (),
}
}