mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 09:14:20 +00:00
11 lines
373 B
Rust
11 lines
373 B
Rust
#![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
|
|
if let Some(NonZero(ref mut y)) = Some(x) {} //~ ERROR mutation of layout constrained field is unsafe
|
|
}
|