| // compile-flags: -Z print-type-sizes |
| // build-pass (FIXME(62277): could be check-pass?) |
| |
| // This file illustrates how padding is handled: alignment |
| // requirements can lead to the introduction of padding, either before |
| // fields or at the end of the structure as a whole. |
| // |
| // It avoids using u64/i64 because on some targets that is only 4-byte |
| // aligned (while on most it is 8-byte aligned) and so the resulting |
| // padding and overall computed sizes can be quite different. |
| |
| #![feature(start)] |
| #![allow(dead_code)] |
| |
| struct S { |
| a: bool, |
| b: bool, |
| g: i32, |
| } |
| |
| enum E1 { |
| A(i32, i8), |
| B(S), |
| } |
| |
| enum E2 { |
| A(i8, i32), |
| B(S), |
| } |
| |
| #[start] |
| fn start(_: isize, _: *const *const u8) -> isize { |
| 0 |
| } |