2003 -> 2004

[lilypond.git] / lily / slur.cc

diff --git a/lily/slur.cc b/lily/slur.cc
index 1ccb8a861f51850dd8c827d707a3e304d7e45a82..349f52cc45439027f383e69ad357597bac4dbb28 100644 (file)
--- a/lily/slur.cc
+++ b/lily/slur.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
     Jan Nieuwenhuizen <janneke@gnu.org>
 */
 
@@ -529,7 +529,10 @@ Slur::height (SCM smob, SCM ax)
   assert (a == Y_AXIS);
 
   SCM mol = me->get_uncached_molecule ();
-  return ly_interval2scm (unsmob_molecule (mol)->extent (a));
+  Interval ext;
+  if (Molecule * m = unsmob_molecule (mol))
+    ext = m->extent (a);
+  return ly_interval2scm (ext);
 }
 
 /*