File: union-trait-impl.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 (17 lines) | stat: -rw-r--r-- 262 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
//@ run-pass

use std::fmt;

union U {
    a: u8
}

impl fmt::Display for U {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        unsafe { write!(f, "Oh hai {}", self.a) }
    }
}

fn main() {
    assert_eq!(U { a: 2 }.to_string(), "Oh hai 2");
}