#![feature(rustc_attrs)] | |
#[rustc_layout_scalar_valid_range_start(1)] | |
#[repr(transparent)] | |
pub(crate) struct NonZero<T>(pub(crate) T); | |
fn main() {} | |
const fn foo() -> NonZero<u32> { NonZero(0) } | |
//~^ ERROR initializing type with `rustc_layout_scalar_valid_range` attr is unsafe | |
const fn bar() -> NonZero<u32> { unsafe { NonZero(0) } } |