File: empty-never-array.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (18 lines) | stat: -rw-r--r-- 359 bytes parent folder | download | duplicates (8) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
#![feature(never_type)]

enum Helper<T, U> {
    T(T, [!; 0]),
    #[allow(dead_code)]
    U(U),
}

fn transmute<T, U>(t: T) -> U {
    let Helper::U(u) = Helper::T(t, []);
    //~^ ERROR refutable pattern in local binding
    //~| `Helper::T(_, _)` not covered
    u
}

fn main() {
    println!("{:?}", transmute::<&str, (*const u8, u64)>("type safety"));
}