rust/tests/ui/let_return.rs
Matthias Krüger 435299be30 rustfmt tests
2018-12-09 23:26:16 +01:00

51 lines
1.1 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.
#![allow(unused)]
#![warn(clippy::let_and_return)]
fn test() -> i32 {
let _y = 0; // no warning
let x = 5;
x
}
fn test_inner() -> i32 {
if true {
let x = 5;
x
} else {
0
}
}
fn test_nowarn_1() -> i32 {
let mut x = 5;
x += 1;
x
}
fn test_nowarn_2() -> i32 {
let x = 5;
x + 1
}
fn test_nowarn_3() -> (i32, i32) {
// this should technically warn, but we do not compare complex patterns
let (x, y) = (5, 9);
(x, y)
}
fn test_nowarn_4() -> i32 {
// this should technically warn, but not b/c of clippy::let_and_return, but b/c of useless type
let x: i32 = 5;
x
}
fn main() {}