45 lines
903 B
Rust
45 lines
903 B
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::neg_multiply)]
|
|
#![allow(clippy::no_effect, clippy::unnecessary_operation)]
|
|
|
|
use std::ops::Mul;
|
|
|
|
struct X;
|
|
|
|
impl Mul<isize> for X {
|
|
type Output = X;
|
|
|
|
fn mul(self, _r: isize) -> Self {
|
|
self
|
|
}
|
|
}
|
|
|
|
impl Mul<X> for isize {
|
|
type Output = X;
|
|
|
|
fn mul(self, _r: X) -> X {
|
|
X
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let x = 0;
|
|
|
|
x * -1;
|
|
|
|
-1 * x;
|
|
|
|
-1 * -1; // should be ok
|
|
|
|
X * -1; // should be ok
|
|
-1 * X; // should also be ok
|
|
}
|