59 lines
1.3 KiB
Rust
59 lines
1.3 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(unused, clippy::no_effect, clippy::unnecessary_operation)]
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#![warn(clippy::mut_mut)]
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fn fun(x: &mut &mut u32) -> bool {
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**x > 0
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}
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fn less_fun(x: *mut *mut u32) {
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let y = x;
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}
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macro_rules! mut_ptr {
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($p:expr) => {
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&mut $p
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};
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}
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#[allow(unused_mut, unused_variables)]
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fn main() {
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let mut x = &mut &mut 1u32;
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{
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let mut y = &mut x;
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}
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if fun(x) {
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let y: &mut &mut u32 = &mut &mut 2;
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**y + **x;
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}
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if fun(x) {
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let y: &mut &mut &mut u32 = &mut &mut &mut 2;
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***y + **x;
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}
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let mut z = mut_ptr!(&mut 3u32);
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}
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fn issue939() {
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let array = [5, 6, 7, 8, 9];
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let mut args = array.iter().skip(2);
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for &arg in &mut args {
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println!("{}", arg);
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}
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let args = &mut args;
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for arg in args {
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println!(":{}", arg);
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}
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}
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