rust/tests/ui/rfcs/rfc-2008-non-exhaustive/borrowck-non-exhaustive.rs
2023-06-05 16:09:46 +00:00

19 lines
484 B
Rust

// Test that the borrow checker considers `#[non_exhaustive]` when checking
// whether a match contains a discriminant read.
// aux-build:monovariants.rs
extern crate monovariants;
use monovariants::NonExhaustiveMonovariant;
fn main() {
let mut x = NonExhaustiveMonovariant::Variant(1);
let y = &mut x;
match x {
//~^ ERROR cannot use `x` because it was mutably borrowed
NonExhaustiveMonovariant::Variant(_) => {},
_ => {},
}
drop(y);
}