The code currently reads:

        // XXX: This should be an assert; until the bugs are fixed, it
        // can't be.
        int[] checkSigs = new int[] { Sig.USR1, Sig.USR2 };
        for (int i = 0; i < checkSigs.length; i++) {
            int sig = checkSigs[i];
            // assertFalse ("pending signal", pending.contains (sig));
            if (pending.contains (sig)) {
                System.out.print ("<<XXX: pending signal "
                                  + Sig.toPrintString (sig)
                                  + ">>");
            }
        }