File: mut-cant-alias.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (14 lines) | stat: -rw-r--r-- 276 bytes parent folder | download | duplicates (28) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
use std::cell::RefCell;



fn main() {
    let m = RefCell::new(0);
    let mut b = m.borrow_mut();
    let b1 = &mut *b;
    let b2 = &mut *b; //~ ERROR cannot borrow
    b1.use_mut();
}

trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { }  }
impl<T> Fake for T { }