You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: test_structs.rs
    path of file: ./repos/c2rust/tests/structs/src
    
    the code of the file until where you have to start completion: use crate::structs::{rust_alignment_entry, rust_entry, Aligned8Struct};
use libc::{c_int, c_uint, size_t};
use std::mem::align_of;

#[link(name = "test")]
extern "C" {
    fn entry(_: c_uint, _: *mut c_int);
    fn alignment_of_aligned8_struct() -> size_t;
    fn alignment_entry(_: c_uint, _: *mut c_int);
}

const BUFFER_SIZE: usize = 9;
const ALIGNMENT_BUFFER_SIZE: usize = 276;

    
pub fn test_alignments() {
    let mut buffer = [0; ALIGNMENT_BUFFER_SIZE];
    let mut rust_buffer = [0; ALIGNMENT_BUFFER_SIZE];
    let expected_buffer = [
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S1
        11, 1, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S2
        12, 2, 42, 1337, 65537, 0, 2, 4, 0, 0, 0, // S3
        12, 4, 42, 1337, 65537, 0, 2, 4, 0, 0, 0, // S4
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S5
        11, 1, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S6
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S7
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S8
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S9
        16, 8, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S10
        16, 16, 42, 1337, 65537, 0, 2, 8, 0, 0, 0, // S11
        11, 1, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S12
        12, 2, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S13
        12, 4, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S14
        16, 8, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S15
        16, 16, 42, 1337, 65537, 0, 1, 3, 0, 0, 0, // S16
        24, 8, 8, 10, 16, // S17
        24, 8, 8, 10, 16, // S18
        24, 8, 8, 10, 16, // S19
        24, 8, 8, 10, 16, // S20
        32, 16, 16, 18, 24, // S21
        12, 1, 1, 2, 4, // S22
        14, 2, 2, 3, 5, // S23
        16, 4, 4, 5, 7, // S24
        24, 8, 8, 9, 11, // S25
        32, 16, 16, 17, 19, // S26
        17, 1, 1, 3, 9, // S27
        17, 1, 1, 3, 9, // S28
        17, 1, 1, 3, 9, // S29
        17, 1, 1, 3, 9, // S30
        17, 1, 1, 3, 9, // S31
        12, 1, 1, 2, 4, // S32
        13, 1, 1, 2, 4, // S33
        13, 1, 1, 2, 4, // S34
        17, 1, 1, 2, 4, // S35
        17, 1, 1, 2, 4, // S36
    ];

    unsafe {
        alignment_entry(ALIGNMENT_BUFFER_SIZE as u32, buffer.as_mut_ptr());
        rust_alignment_entry(ALIGNMENT_BUFFER_SIZE as u32, rust_buffer.as_mut_ptr());
    }

    assert_eq!(&buffer[..], &rust_buffer[..]);
    assert_eq!(&buffer[..], &expected_buffer[..]);
}