Autoboxing applied when calculating most-specific method

javac accepts the following program in violation of the specification.

// ###@###.###
class Test5 {
    static void foo(int i1, Integer i2) {
System.out.println("Integer");
    }
    static void foo(Integer i1, double d) {
System.out.println("double");
    }

    public static void main(String[] args) {
        foo(5, 5);
    }
}