X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fdirectional-element-interface.cc;fp=lily%2Fdirectional-element-interface.cc;h=872f3ad23fb059b3ae0a1f5083e8cb676e772c30;hb=889dc430ee110fc9f7b66d9f8768fb746bb2b12a;hp=3d7514cad624b7940e73c85f6fdd3fc718169f69;hpb=63eb3446a0be84ea96c7c18034c44a65337a9b9a;p=lilypond.git

diff --git a/lily/directional-element-interface.cc b/lily/directional-element-interface.cc
index 3d7514cad6..872f3ad23f 100644
--- a/lily/directional-element-interface.cc
+++ b/lily/directional-element-interface.cc
@@ -7,11 +7,17 @@
 */
 
 #include "directional-element-interface.hh"
+#include "warn.hh"
 
 Direction
 get_grob_direction (Grob *me)
 {
   SCM d = me->get_property ("direction");
+  if (d == ly_symbol2scm ("calculation-in-progress"))
+    {
+      programming_error ("Grob direction requested while calculation in progress. ");
+      return UP;
+    }
   if (!is_direction (d))
     return CENTER;