File: const-unwrap.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-- 480 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
//@ check-fail
// Verify that panicking `const_option` methods do the correct thing

const FOO: i32 = Some(42i32).unwrap();

const BAR: i32 = Option::<i32>::None.unwrap();
//~^ ERROR: evaluation of constant value failed
//~| NOTE: called `Option::unwrap()` on a `None` value

const BAZ: i32 = Option::<i32>::None.expect("absolutely not!");
//~^ ERROR: evaluation of constant value failed
//~| NOTE: absolutely not!

fn main() {
    println!("{}", FOO);
    println!("{}", BAR);
}