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#![feature(rustc_attrs)]
use std::cell::Cell;
#[rustc_layout_scalar_valid_range_start(1)]
#[repr(transparent)]
pub(crate) struct NonZero<T>(pub(crate) T);
fn main() {}
const fn foo() -> NonZero<Cell<u32>> {
let mut x = unsafe { NonZero(Cell::new(1)) };
let y = &x.0;
//~^ ERROR borrow of layout constrained field with interior mutability
unsafe { NonZero(Cell::new(1)) }
}
const fn bar() -> NonZero<Cell<u32>> {
let mut x = unsafe { NonZero(Cell::new(1)) };
let y = unsafe { &x.0 };
unsafe { NonZero(Cell::new(1)) }
}
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