rustc/tests/ui/or-patterns/issue-68785-irrefutable-param-with-at.rs

// check-pass

enum MyEnum {
    FirstCase(u8),
    OtherCase(u16),
}

fn my_fn(x @ (MyEnum::FirstCase(_) | MyEnum::OtherCase(_)): MyEnum) {}

fn main() {
    my_fn(MyEnum::FirstCase(0));
}