tests/expectations/tests/class_no_members.rs

#![allow(
    dead_code,
    non_snake_case,
    non_camel_case_types,
    non_upper_case_globals
)]

#[repr(C)]
#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
pub struct whatever {
    pub _address: u8,
}
#[test]
fn bindgen_test_layout_whatever() {
    assert_eq!(
        ::std::mem::size_of::<whatever>(),
        1usize,
        concat!("Size of: ", stringify!(whatever))
    );
    assert_eq!(
        ::std::mem::align_of::<whatever>(),
        1usize,
        concat!("Alignment of ", stringify!(whatever))
    );
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
pub struct whatever_child {
    pub _address: u8,
}
#[test]
fn bindgen_test_layout_whatever_child() {
    assert_eq!(
        ::std::mem::size_of::<whatever_child>(),
        1usize,
        concat!("Size of: ", stringify!(whatever_child))
    );
    assert_eq!(
        ::std::mem::align_of::<whatever_child>(),
        1usize,
        concat!("Alignment of ", stringify!(whatever_child))
    );
}
#[repr(C)]
#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
pub struct whatever_child_with_member {
    pub m_member: ::std::os::raw::c_int,
}
#[test]
fn bindgen_test_layout_whatever_child_with_member() {
    assert_eq!(
        ::std::mem::size_of::<whatever_child_with_member>(),
        4usize,
        concat!("Size of: ", stringify!(whatever_child_with_member))
    );
    assert_eq!(
        ::std::mem::align_of::<whatever_child_with_member>(),
        4usize,
        concat!("Alignment of ", stringify!(whatever_child_with_member))
    );
    assert_eq!(
        {
            let struct_instance =
                unsafe { std::mem::zeroed::<whatever_child_with_member>() };
            let struct_ptr =
                &struct_instance as *const whatever_child_with_member;
            let field_ptr = std::ptr::addr_of!(struct_instance.m_member);
            let struct_address = struct_ptr as usize;
            let field_address = field_ptr as usize;
            std::mem::forget(struct_instance);
            field_address.checked_sub(struct_address).unwrap()
        },
        0usize,
        concat!(
            "Offset of field: ",
            stringify!(whatever_child_with_member),
            "::",
            stringify!(m_member)
        )
    );
}