50 lines
925 B
Rust
50 lines
925 B
Rust
// run-pass
|
|
|
|
#[derive(Copy, Clone)]
|
|
#[allow(dead_code)]
|
|
struct Pie {
|
|
slices: u8,
|
|
size: u8,
|
|
}
|
|
|
|
union Foo {
|
|
#[allow(dead_code)]
|
|
bar: i8,
|
|
baz: Pie,
|
|
}
|
|
|
|
fn main() {
|
|
let u = Foo { bar: 5 };
|
|
let (Some(Foo { bar: _ }) | None) = Some(u);
|
|
let u = Foo { bar: 6 };
|
|
let (Some(Foo { bar: _ }) | Some(Foo { bar: _ }) | None) = Some(u);
|
|
unsafe {
|
|
let u = Foo { bar: 7 };
|
|
let (Foo { bar } | Foo { bar }) = u;
|
|
assert_eq!(bar, 7)
|
|
}
|
|
let u = Foo { bar: 8 };
|
|
match Some(u) {
|
|
Some(Foo { bar: _ }) => 3,
|
|
None => 4,
|
|
};
|
|
|
|
let u = Foo { bar: 9 };
|
|
unsafe {
|
|
match u {
|
|
Foo { baz: Pie { .. } } => {}
|
|
};
|
|
}
|
|
let u = Foo { bar: 10 };
|
|
unsafe {
|
|
match u {
|
|
Foo { baz: Pie { slices: _, size: _ } } => {}
|
|
};
|
|
}
|
|
|
|
let u = Foo { bar: 11 };
|
|
match u {
|
|
Foo { baz: _ } => {}
|
|
};
|
|
}
|