#![allow(warnings)]

fn ok<'lt>(mut e: &'lt u32) {
   
    let x = 4;
    e = &x;
}

fn main() {
    let mut z = 0;
}

(Playground)

Errors:

   Compiling playground v0.0.1 (/playground)
error[E0597]: `x` does not live long enough
 --> src/main.rs:6:9
  |
3 | fn ok<'lt>(mut e: &'lt u32) {
  |       --- lifetime `'lt` defined here
4 |    
5 |     let x = 4;
  |         - binding `x` declared here
6 |     e = &x;
  |     ----^^
  |     |   |
  |     |   borrowed value does not live long enough
  |     assignment requires that `x` is borrowed for `'lt`
7 | }
  | - `x` dropped here while still borrowed

For more information about this error, try `rustc --explain E0597`.
error: could not compile `playground` (bin "playground") due to 1 previous error

6 posts - 3 participants

Read full topic