mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 06:51:58 +00:00
22 lines
499 B
Rust
22 lines
499 B
Rust
// run-pass
|
|
// only-32bit too impatient for 2⁶⁴ items
|
|
// needs-unwind
|
|
// compile-flags: -C debug_assertions=yes -C opt-level=3
|
|
|
|
use std::panic;
|
|
|
|
fn main() {
|
|
let n = usize::MAX as u64;
|
|
assert_eq!((0..).by_ref().position(|i| i >= n), Some(usize::MAX));
|
|
|
|
let r = panic::catch_unwind(|| {
|
|
(0..).by_ref().position(|i| i > n)
|
|
});
|
|
assert!(r.is_err());
|
|
|
|
let r = panic::catch_unwind(|| {
|
|
(0..=n + 1).by_ref().position(|_| false)
|
|
});
|
|
assert!(r.is_err());
|
|
}
|