rust/tests/ui/iterators/iter-count-overflow-debug.rs
2023-01-11 09:32:08 +00:00

16 lines
338 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() {
assert_eq!((0..usize::MAX).by_ref().count(), usize::MAX);
let r = panic::catch_unwind(|| {
(0..=usize::MAX).by_ref().count()
});
assert!(r.is_err());
}