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

package info (click to toggle)
rustc 1.87.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 925,564 kB
  • sloc: xml: 158,127; python: 36,039; javascript: 19,761; sh: 19,737; cpp: 18,981; ansic: 13,133; asm: 4,376; makefile: 710; perl: 29; lisp: 28; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 287 bytes parent folder | download | duplicates (28) 
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 { }