rust/tests/ui/rfcs/rfc-2008-non-exhaustive/borrowck-exhaustive.rs

45 lines
831 B
Rust

// Test that the borrow checker doesn't consider checking an exhaustive pattern
// as an access.
//@ check-pass
#![allow(dropping_references)]
//@ aux-build:monovariants.rs
extern crate monovariants;
use monovariants::ExhaustiveMonovariant;
enum Local {
Variant(u32),
}
#[non_exhaustive]
enum LocalNonExhaustive {
Variant(u32),
}
fn main() {
let mut x = ExhaustiveMonovariant::Variant(1);
let y = &mut x;
match x {
ExhaustiveMonovariant::Variant(_) => {},
_ => {},
}
drop(y);
let mut x = Local::Variant(1);
let y = &mut x;
match x {
Local::Variant(_) => {},
_ => {},
}
drop(y);
let mut x = LocalNonExhaustive::Variant(1);
let y = &mut x;
match x {
LocalNonExhaustive::Variant(_) => {},
_ => {},
}
drop(y);
}