rust/tests/ui/issues/issue-19086.rs

use Foo::FooB;

enum Foo {
    FooB { x: i32, y: i32 }
}

fn main() {
    let f = FooB { x: 3, y: 4 };
    match f {
        FooB(a, b) => println!("{} {}", a, b),
        //~^ ERROR expected tuple struct or tuple variant, found variant `FooB`
    }
}