Re: Issue 1336 in lilypond: skipTypesetting segfaults when set during a skipBars-induced MultiMeasureRest spanner

[lilypond]

Comment #4 on issue 1336 by percival.music.ca: skipTypesetting segfaults  
when set during a skipBars-induced MultiMeasureRest spanner
http://code.google.com/p/lilypond/issues/detail?id=1336

Another option would be to add a null pointer check to
  lily/grob.cc
line 786
robust_relative_extent (Grob *me, Grob *refpoint, Axis a)

and return an empty Interval if me == 0.  Given the "robust" name, it might  
make sense to put the check there, rather than self_alignment_interface.