No compilation error reported when record is declared in an inner class

The below code should throw a compilation error as record is declared in an inner class. However, the compilation goes through successfully.

class Outer {
                class Inner {
                                record R(int a) {}
                }
}

class RecordsTest {

                public static void main(String[] args) {
                                Outer.Inner.R rec = new Outer.Inner.R(1);
                                System.out.println(rec.a());
                }
}