rust/tests/ui/mir/field-projection-invariant.rs

25 lines
474 B
Rust

// build-pass
struct Inv<'a>(&'a mut &'a ());
enum Foo<T> {
Bar,
Var(T),
}
type Supertype = Foo<for<'a> fn(Inv<'a>, Inv<'a>)>;
fn foo(x: Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>) {
match x {
Supertype::Bar => {}
Supertype::Var(x) => {}
}
}
fn foo_nested(x: Foo<Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>>) {
match x {
Foo::Bar => {}
Foo::Var(Supertype::Bar) => {}
Foo::Var(Supertype::Var(x)) => {}
}
}
fn main() {}