X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fslur-scoring.cc;h=61a4423159a4d56792c7c8a8338fe280b6b9f32e;hb=c39d188d28fdc84cef8cbaea7b8d6e2fb718c30f;hp=e1025fa545c56c1c20ee0a476355b778229cf336;hpb=e25487c53610c19a44a84eabe2d7e61c4663f868;p=lilypond.git

diff --git a/lily/slur-scoring.cc b/lily/slur-scoring.cc
index e1025fa545..61a4423159 100644
--- a/lily/slur-scoring.cc
+++ b/lily/slur-scoring.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1996--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1996--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
@@ -226,8 +226,8 @@ Slur_score_state::fill (Grob *me)
 
   Slur::replace_breakable_encompass_objects (me);
   staff_space_ = Staff_symbol_referencer::staff_space (me);
-  Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
-  thickness_ = robust_scm2double (me->get_property ("thickness"), 1.0) * lt;
+  line_thickness_ = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+  thickness_ = robust_scm2double (me->get_property ("thickness"), 1.0) * line_thickness_;
 
   dir_ = slur_direction ();
   parameters_.fill (me);
@@ -459,11 +459,16 @@ Slur_score_state::get_y_attachment_range () const
     {
       if (extremes_[d].note_column_)
         {
-          end_ys[d] = dir_
-                      * max (max (dir_ * (base_attachments_[d][Y_AXIS]
-                                          + parameters_.region_size_ * dir_),
-                                  dir_ * (dir_ + extremes_[d].note_column_->extent (common_[Y_AXIS], Y_AXIS)[dir_])),
-                             dir_ * base_attachments_[-d][Y_AXIS]);
+          Interval nc_extent = extremes_[d].note_column_
+                               ->extent (common_[Y_AXIS], Y_AXIS);
+          if (nc_extent.is_empty ())
+            slur_->warning ("slur trying to encompass an empty note column.");
+          else
+            end_ys[d] = dir_
+                        * max (max (dir_ * (base_attachments_[d][Y_AXIS]
+                                            + parameters_.region_size_ * dir_),
+                                    dir_ * (dir_ + nc_extent[dir_])),
+                               dir_ * base_attachments_[-d][Y_AXIS]);
         }
       else
         end_ys[d] = base_attachments_[d][Y_AXIS] + parameters_.region_size_ * dir_;