LY_ASSERT_SMOB (Grob, from_scm, 1);
LY_ASSERT_SMOB (Grob, to_scm, 2);
- Grob *from = Grob::unsmob (from_scm);
- Grob *to = Grob::unsmob (to_scm);
+ Grob *from = unsmob<Grob> (from_scm);
+ Grob *to = unsmob<Grob> (to_scm);
return Page_layout_problem::get_spacing_spec (from, to, false, 0, 0);
}