File: mut-ptr-cant-outlive-ref.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 287 bytes parent folder | download | duplicates (19) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
use std::cell::RefCell;

fn main() {
    let m = RefCell::new(0);
    let p;
    {
        let b = m.borrow();
        p = &*b;
    }
    //~^^ ERROR `b` does not live long enough
    p.use_ref();
}

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