X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmusic-constructor.cc;h=e86672d7c7db6b6eccafc1a5b2979443485c56a6;hb=78fab0cd2b9f3f568e9b97b313e33f28d7077223;hp=86b415100073921240653749aaa78b3b16440398;hpb=6b9bfd374643d1eed1ea158777d796c57a2bcd3a;p=lilypond.git

diff --git a/lily/music-constructor.cc b/lily/music-constructor.cc
index 86b4151000..e86672d7c7 100644
--- a/lily/music-constructor.cc
+++ b/lily/music-constructor.cc
@@ -3,12 +3,16 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 2001--2002  Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 2001--2004  Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 #include <map>			// UGH.
+#include <assert.h>
+
+#include "warn.hh"
 #include "music-constructor.hh"
+
 typedef Music* (*Music_ctor) ();
 
 static std::map<String,Music_ctor> *ctors_map_;
@@ -36,6 +40,8 @@ Music*
 make_music (String s)
 {
   Music_ctor c = get_music_ctor (s);
+  if (!c)
+    programming_error (String ("No constructor for music: ") + s);
   assert (c);
   
   return (*c) ();