gistfile1.txt

So, I figured out how to make bigints work for nqp sprintf:

            my $knowhow := nqp::knowhow().new_type(:repr("P6bigint"));

            if nqp::eqaddr($number_representation.WHAT, 1.WHAT) {
                nqp::box_i($number_representation, $knowhow);
            } else {
                if nqp::eqaddr($number_representation.WHAT, 1.01.WHAT)
                || nqp::eqaddr($number_representation.WHAT, "1.01".WHAT) {
                    if $number_representation > 0 {
                        nqp::fromnum_I(nqp::floor_n($number_representation), $knowhow);
                    }
                    else {
                        nqp::fromnum_I(nqp::ceil_n($number_representation), $knowhow);
                    }
                } else {
                    $number_representation;
                }
            }

(This clearly isn't complete, it assumes you're passed either an int, a num, a str, or a bigint.)

This *works* in the NQP test file.  Unfortunately, it also completely breaks Jakudo's sprintf; the very first time S32-str/sprintf.t tries to print out a simple Int, it dies with

    ===SORRY!===
    java.lang.RuntimeException: Cannot access a reference attribute as a native attribute

Help?

Ideally, of course, when used in Jakudo this code should call .Int to intify arguments which are supposed to be Ints...