File: never-pattern-is-a-read.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (16 lines) | stat: -rw-r--r-- 291 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
// Make sure we consider `!` to be a union read.

#![feature(never_type, never_patterns)]
//~^ WARN the feature `never_patterns` is incomplete

union U {
    a: !,
    b: usize,
}

fn foo<T>(u: U) -> ! {
    let U { a: ! } = u;
    //~^ ERROR access to union field is unsafe
}

fn main() {}