| //@ run-pass | |
| //@ only-32bit too impatient for 2⁶⁴ items | |
| //@ compile-flags: -C debug_assertions=no -C opt-level=3 | |
| fn main() { | |
| let n = usize::MAX as u64; | |
| assert_eq!((0..).by_ref().position(|i| i >= n), Some(usize::MAX)); | |
| assert_eq!((0..).by_ref().position(|i| i > n), Some(0)); | |
| assert_eq!((0..=n + 1).by_ref().position(|_| false), None); | |
| } |