typecheck barnumber.

[lilypond.git] / lily / paper-column-engraver.cc

diff --git a/lily/paper-column-engraver.cc b/lily/paper-column-engraver.cc
index 1bc0c6b0e506f3a22f891029576f75fa9dc71c40..cdf2e500e57d89b3f7ca5e47e10de89d0a5f06df 100644 (file)
--- a/lily/paper-column-engraver.cc
+++ b/lily/paper-column-engraver.cc
@@ -205,9 +205,11 @@ Paper_column_engraver::stop_translation_timestep ()
 
 
   SCM mpos = get_property ("measurePosition");
-  if (unsmob_moment (mpos))
+  SCM barnum = get_property ("internalBarNumber"),
+  if (unsmob_moment (mpos)
+      && scm_is_integer (barnum))
     {
-      SCM where = scm_cons (get_property ("internalBarNumber"),
+      SCM where = scm_cons (barnum,
                            mpos);
 
       command_column_->set_property ("rhythmic-location", where);