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[lilypond.git] / lily / instrument-name-engraver.cc

diff --git a/lily/instrument-name-engraver.cc b/lily/instrument-name-engraver.cc
index 7bdfc428e872ff531fd2612cce18198d3e08ef42..56fa84ee263a60c2abb275b433d5393d24487c0f 100644 (file)
--- a/lily/instrument-name-engraver.cc
+++ b/lily/instrument-name-engraver.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2000--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2000--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -46,8 +46,17 @@ protected:
   void start_spanner ();
   void consider_start_spanner ();
   void stop_spanner ();
+
+  virtual void derived_mark () const;
 };
 
+void
+Instrument_name_engraver::derived_mark () const
+{
+  scm_gc_mark (long_text_);
+  scm_gc_mark (short_text_);
+}
+
 Instrument_name_engraver::Instrument_name_engraver ()
 {
   text_spanner_ = 0;