#![allow(unreachable_code)]
#![feature(const_fn)]

fn main() {
    println!("{:?}", {
         use std::num::NonZeroU32; const fn c(c: char) -> Option<NonZeroU32> { if c == '\0' { None } else { Some(unsafe { NonZeroU32::new_unchecked(c as u32) }) } } c('\0')
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (/playground)
error[E0554]: #![feature] may not be used on the stable release channel
 --> src/main.rs:2:1
  |
2 | #![feature(const_fn)]
  | ^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0554`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.

*/

/* ~~~~=== stdout ===~~~~

*/