rust/tests/ui/never_type/issue-44402.rs

34 lines
531 B
Rust

//@ check-pass
#![allow(dead_code)]
#![feature(never_type)]
#![feature(exhaustive_patterns)]
// Regression test for inhabitedness check. The old
// cache used to cause us to incorrectly decide
// that `test_b` was invalid.
struct Foo {
field1: !,
field2: Option<&'static Bar>,
}
struct Bar {
field1: &'static Foo
}
fn test_a() {
let x: Option<Foo> = None;
match x { None => () }
}
fn test_b() {
let x: Option<Bar> = None;
match x {
Some(_) => (),
None => ()
}
}
fn main() { }