@[params]
struct Data {
    array []int
}

fn (d Data) len() int {
    return d.array.len
}

fn make_result() []Data {
    return []
}

// make_result2 is here to ensure that
// the branches contain different code,
// so the tests passes even with -cstrict -cc gcc
fn make_result2() []Data {
    return []
}

fn f_doesnotcompile(d Data) []Data {
    return match d.len() {
        1 { make_result() }
        else { make_result2() }
    }
}

fn f_compiles1(d Data) []Data {
    return match d.array.len {
        1 { make_result() }
        else { make_result2() }
    }
}

fn f_compiles2(d Data) []Data {
    length := d.array.len
    return match length {
        1 { make_result() }
        else { make_result2() }
    }
}

fn test_match_in_fn_call() {
    println(f_doesnotcompile())
    assert f_doesnotcompile() == []Data{}
    println(f_compiles1())
    assert f_compiles1() == []Data{}
    println(f_compiles2())
    assert f_compiles2() == []Data{}
}