Re: [Lilypond-auto] Issue 3040 in lilypond: Segfault (infinite recursion) in add_interior_skylines

[lilypond]

Comment #1 on issue 3040 by address@hidden: Segfault (infinite recursion)  
in add_interior_skylines
http://code.google.com/p/lilypond/issues/detail?id=3040

The problem is infinite nesting in the elements list of a grob.  A  
StaffGrouper is an element of a VerticalAxisGroup which itself is an  
element of the StaffGrouper (or something like that).  The problem is  
likely during the engraving stage.  What'd be good for debugging purposes  
is to add to Pointer_group_interface a check where if grob X is in the  
element list of grob Y (or any of its elements recursed down through all  
elements lists) and you are trying to add grob Y to the element list of  
grob X, LilyPond should abort.