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// revisions: mirunsafeck thirunsafeck
// [thirunsafeck]compile-flags: -Z thir-unsafeck
#![feature(rustc_attrs)]
#[rustc_layout_scalar_valid_range_start(1)]
#[repr(transparent)]
pub(crate) struct NonZero<T>(pub(crate) T);
fn main() {
let mut x = unsafe { NonZero(1) };
let y = &mut x.0; //~ ERROR mutation of layout constrained field is unsafe
}
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