44 lines
1.1 KiB
Rust
44 lines
1.1 KiB
Rust
#![feature(plugin)]
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#![plugin(clippy)]
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#![allow(unused, no_effect, unnecessary_operation)]
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//#![plugin(regex_macros)]
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//extern crate regex;
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#[deny(mut_mut)]
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fn fun(x : &mut &mut u32) -> bool { //~ERROR generally you want to avoid `&mut &mut
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**x > 0
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}
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#[deny(mut_mut)]
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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) => { &mut $p }
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//~^ ERROR generally you want to avoid `&mut &mut
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}
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#[deny(mut_mut)]
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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; //~ERROR generally you want to avoid `&mut &mut
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{
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let mut y = &mut x; //~ERROR this expression mutably borrows a mutable reference
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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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//~^ ERROR generally you want to avoid `&mut &mut
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//~| ERROR generally you want to avoid `&mut &mut
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//~| ERROR generally you want to avoid `&mut &mut
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//~| ERROR generally you want to avoid `&mut &mut
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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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//~^ NOTE in this expansion of mut_ptr!
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}
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