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#![deny(unaligned_references)]
#[repr(packed)]
pub struct Good {
data: u64,
ptr: &'static u64,
data2: [u64; 2],
aligned: [u8; 32],
}
#[repr(packed(2))]
pub struct Packed2 {
x: u32,
y: u16,
z: u8,
}
fn main() {
unsafe {
let good = Good { data: 0, ptr: &0, data2: [0, 0], aligned: [0; 32] };
let _ = &good.ptr; //~ ERROR reference to packed field
//~^ previously accepted
let _ = &good.data; //~ ERROR reference to packed field
//~^ previously accepted
// Error even when turned into raw pointer immediately.
let _ = &good.data as *const _; //~ ERROR reference to packed field
//~^ previously accepted
let _: *const _ = &good.data; //~ ERROR reference to packed field
//~^ previously accepted
// Error on method call.
let _ = good.data.clone(); //~ ERROR reference to packed field
//~^ previously accepted
// Error for nested fields.
let _ = &good.data2[0]; //~ ERROR reference to packed field
//~^ previously accepted
let _ = &*good.ptr; // ok, behind a pointer
let _ = &good.aligned; // ok, has align 1
let _ = &good.aligned[2]; // ok, has align 1
}
unsafe {
let packed2 = Packed2 { x: 0, y: 0, z: 0 };
let _ = &packed2.x; //~ ERROR reference to packed field
//~^ previously accepted
let _ = &packed2.y; // ok, has align 2 in packed(2) struct
let _ = &packed2.z; // ok, has align 1
}
}
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