#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#[repr(packed, C)]
struct Packed {
    _padding: u8,
    unaligned: u32,
}
fn main() {
    let packed = Packed {
        _padding: 0x00,
        unaligned: 0x01020304,
    };
    let unaligned = &raw const packed.unaligned;
    let v = unsafe { std::ptr::read_unaligned(unaligned) };
    assert_eq!(v, 0x01020304);
}