/src/test/run-pass/optimization-fuel-1.rs

https://gitlab.com/jianglu/rust · Rust · 24 lines · 9 code · 5 blank · 10 comment · 2 complexity · 5ed2cb682cfe02794b59b237d35e8deb MD5 · raw file

  1. // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
  2. // file at the top-level directory of this distribution and at
  3. // http://rust-lang.org/COPYRIGHT.
  4. //
  5. // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  6. // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  7. // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  8. // option. This file may not be copied, modified, or distributed
  9. // except according to those terms.
  10. #![crate_name="foo"]
  11. use std::mem::size_of;
  12. // compile-flags: -Z fuel=foo=1
  13. struct S1(u8, u16, u8);
  14. struct S2(u8, u16, u8);
  15. fn main() {
  16. let optimized = (size_of::<S1>() == 4) as usize
  17. +(size_of::<S2>() == 4) as usize;
  18. assert_eq!(optimized, 1);
  19. }