rust/tests/ui/iterators/iter-position-overflow-ndebug.rs
2024-02-16 20:02:50 +00:00

11 lines
359 B
Rust

//@ 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);
}