"Return broken-into list for @var{spanner}.")
{
LY_ASSERT_TYPE (Spanner::unsmob, spanner, 1);
- Spanner *me = dynamic_cast<Spanner *> (Grob::unsmob (spanner));
+ Spanner *me = Spanner::unsmob (spanner);
SCM s = SCM_EOL;
for (vsize i = me->broken_intos_.size (); i--;)