mirror of https://github.com/rust-lang/rust.git
60 lines
997 B
Rust
60 lines
997 B
Rust
// aux-build:macro_rules.rs
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#![allow(unused, clippy::no_effect, clippy::unnecessary_operation)]
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#![warn(clippy::mut_mut)]
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#[macro_use]
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extern crate macro_rules;
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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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fn issue6922() {
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// do not lint from an external macro
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mut_mut!();
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}
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