Imported Upstream version 2.18.0

[lilypond.git] / lily / change-iterator.cc

diff --git a/lily/change-iterator.cc b/lily/change-iterator.cc
index 0adac3b8b3808d424847b345cba9a706a1174ca1..aa505f9fe104f83eee797770447e15fa10fc08c9 100644 (file)
--- a/lily/change-iterator.cc
+++ b/lily/change-iterator.cc
@@ -26,7 +26,7 @@
 #include "warn.hh"
 
 void
-Change_iterator::error (string reason)
+Change_iterator::error (const string &reason)
 {
   string to_type = ly_symbol2string (get_music ()->get_property ("change-to-type"));
   string to_id = ly_scm2string (get_music ()->get_property ("change-to-id"));