mirror of https://github.com/rust-lang/rust
33 lines
804 B
Rust
33 lines
804 B
Rust
//@ compile-flags: -Z print-type-sizes --crate-type=lib
|
|
//@ build-pass
|
|
//@ ignore-pass
|
|
// ^-- needed because `--pass check` does not emit the output needed.
|
|
// FIXME: consider using an attribute instead of side-effects.
|
|
|
|
// 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.
|
|
|
|
#![allow(dead_code)]
|
|
|
|
#[repr(align(16))]
|
|
#[derive(Default)]
|
|
struct A(i32);
|
|
|
|
enum E {
|
|
A(i32),
|
|
B(A)
|
|
}
|
|
|
|
#[derive(Default)]
|
|
pub struct S {
|
|
a: i32,
|
|
b: i32,
|
|
c: A,
|
|
d: i8,
|
|
}
|