#![cfg_attr(feature = "unstable", feature(test))]
#[cfg(feature = "unstable")]
extern crate test;
#[cfg(feature = "unstable")]
fn main() {
let expected =
(1u64 << 32)
- (1 << 24)
- 1
+ 2;
println!("count {}", (0..expected as usize).map(test::black_box).count());
}
#[cfg(not(feature = "unstable"))]
fn main() {
println!("compile with --features unstable")
}