rust/tests/ui/unsafe/ranged_ints3_match.rs
Matthew Jasper 982b49494e Remove revisions for THIR unsafeck
This is to make the diff when stabilizing it easier to review.
2024-01-05 09:30:27 +00:00

20 lines
561 B
Rust

#![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() {
let mut x = unsafe { NonZero(Cell::new(1)) };
match x {
NonZero(ref x) => { x }
//~^ ERROR borrow of layout constrained field with interior mutability
};
let mut y = unsafe { NonZero(42) };
match y { NonZero(ref y) => { y } }; // OK, type of `y` is freeze
match y { NonZero(ref mut y) => { y } };
//~^ ERROR mutation of layout constrained field
}