Spurious interning error in for-each loop: "found long, required @Interned long"

[Calvin-L]

    public void interningLongs(List<Long> list) {
        for (long i : list) {
            long unused = Math.addExact(i, 0L);
        }
    }

For the above code, the Interning Checker reports

error: [argument] incompatible argument for parameter x of Math.addExact.
   found   : long
   required: @Interned long

It is true that the boxed capital-L Long values in the list are not interned, but I believe they should be treated as interned once they are unboxed to primitive lower-case-L long values.