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#![warn(indirect_structural_match)]
struct NoEq;
enum Foo {
Bar,
Baz,
Qux(NoEq),
}
// Even though any of these values can be compared structurally, we still disallow it in a pattern
// because `Foo` does not impl `PartialEq`.
const BAR_BAZ: Foo = if 42 == 42 {
Foo::Baz
} else {
Foo::Bar
};
fn main() {
match Foo::Qux(NoEq) {
BAR_BAZ => panic!(),
//~^ ERROR must be annotated with `#[derive(PartialEq, Eq)]`
_ => {}
}
}
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