#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(range_bounds_is_empty)]
use std::ops::RangeBounds;
fn main() {
    assert!(! (..0).is_empty());
    assert!(! (i32::MAX..).is_empty());
    assert!(! RangeBounds::< u8 >::is_empty(& (..)));
}