// run-pass #![crate_name="foo"] use std::mem::size_of; // compile-flags: -Z fuel=foo=1 #[allow(dead_code)] struct S1(u8, u16, u8); #[allow(dead_code)] struct S2(u8, u16, u8); fn main() { let optimized = (size_of::() == 4) as usize +(size_of::() == 4) as usize; assert_eq!(optimized, 1); }