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// run-pass
#![feature(ptr_internals, test)]
extern crate test;
use test::black_box as b; // prevent promotion of the argument and const-propagation of the result
use std::ptr::NonNull;
const DANGLING: NonNull<u32> = NonNull::dangling();
const CASTED: NonNull<u32> = NonNull::cast(NonNull::<i32>::dangling());
pub fn main() {
// Be super-extra paranoid and cast the fn items to fn pointers before blackboxing them.
assert_eq!(DANGLING, b::<fn() -> _>(NonNull::dangling)());
assert_eq!(CASTED, b::<fn() -> _>(NonNull::dangling)());
}
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