rust/src/test/run-fail/issue-44216-sub-instant.rs

// error-pattern:overflow

use std::time::{Instant, Duration};

fn main() {
    let now = Instant::now();
    let _ = now - Duration::from_secs(u64::max_value());
}
Relaxed error pattern, and add test for SystemTime as well. 2017-09-09 17:48:43 +00:00			`// error-pattern:overflow`
Properly detect overflow in Instance +/- Duration. Avoid unchecked cast from `u64` to `i64`. Use `try_into()` for checked cast. (On Unix, cast to `time_t` instead of `i64`.) 2017-08-31 17:16:24 +00:00
			`use std::time::{Instant, Duration};`

			`fn main() {`
			`let now = Instant::now();`
			`let _ = now - Duration::from_secs(u64::max_value());`
			`}`