Issue 1296 in lilypond: Progerrors when using \laissezVibrer in a cross-staff context

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Warning Priority-Medium Regression

New issue 1296 by v.villenave: Progerrors when using \laissezVibrer in a  
cross-staff context
http://code.google.com/p/lilypond/issues/detail?id=1296

% Reported by Neil on -devel:
http://lists.gnu.org/archive/html/lilypond-devel/2010-09/msg00064.html


% The following example produces unobjectionable output, but
% spits out programming errors:

\version "2.13.33"

<<
 \new Staff = "up" \relative c'' {
   c8
   \change Staff = "down"
   c,8\laissezVibrer
   \change Staff = "up"
   c'8 c
 }
 \new Staff = "down" { s2 }


%%%

Neil reported the following progerrors with 2.13.33:
-> programming error: cyclic dependency: calculation-in-progress
encountered for #'direction (Stem)

Whilt 2.13.35 gives me the following:
Grob direction requested while calculation in progress.


Neil:
"""
In a real score, it's more serious, since it's preventing automatic
kneed beams from working; in this case the (voluminous) errors are for
adjacent-pure-heights:

-> programming error: cyclic dependency: calculation-in-progress
encountered for #'adjacent-pure-heights (VerticalAxisGroup)
"
Neil suspected that this was caused by the fix for issue 881, which would  
make it a regression.