1 // Copyright 2016 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.
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.
11 // compile-flags: -Z print-type-sizes
14 // This file illustrates how packing is handled; it should cause
15 // the elimination of padding that would normally be introduced
16 // to satisfy alignment desirata.
18 // It avoids using u64/i64 because on some targets that is only 4-byte
19 // aligned (while on most it is 8-byte aligned) and so the resulting
20 // padding and overall computed sizes can be quite different.
24 #![feature(repr_packed)]
71 fn start(_: isize, _: *const *const u8) -> isize {
72 let _c: Packed1 = Default::default();
73 let _d: Packed2 = Default::default();
74 let _e: Packed2C = Default::default();
75 let _f: Padded = Default::default();