File: wf-check-hidden-type.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 (20 lines) | stat: -rw-r--r-- 426 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
//! Regression test for #114728.

trait Extend<'a, 'b> {
    fn extend(self, _: &'a str) -> &'b str;
}

impl<'a, 'b> Extend<'a, 'b> for Option<&'b &'a ()> {
    fn extend(self, s: &'a str) -> &'b str {
        s
    }
}

fn boom<'a, 'b>() -> impl Extend<'a, 'b> {
    None::<&'_ &'_ ()> //~ ERROR lifetime may not live long enough
}

fn main() {
    let y = boom().extend(&String::from("temporary"));
    println!("{}", y);
}