X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fitem.cc;h=77083104e06e4c2cf86f052592a52f263ccf5d77;hb=d765f3af45be51f15da55cf570a4b172200e1035;hp=12d4d48a47c238576b82f771b6e980c88aa06624;hpb=98af510165132fc80aee30f8e58c627247c7cb3e;p=lilypond.git

diff --git a/lily/item.cc b/lily/item.cc
index 12d4d48a47..77083104e0 100644
--- a/lily/item.cc
+++ b/lily/item.cc
@@ -174,7 +174,7 @@ Item::handle_prebroken_dependencies ()
 }
 
 SCM
-Item::do_derived_mark ()
+Item::do_derived_mark ()const
 {
   if (broken_to_drul_[LEFT])
     scm_gc_mark (broken_to_drul_[LEFT]->self_scm ());