Issue 4459/1: Mark mark_smob () member functions as const

[lilypond.git] / lily / include / paper-book.hh

diff --git a/lily/include/paper-book.hh b/lily/include/paper-book.hh
index 40a40a39b67183201a87ff77318c3e75d4064e8f..b105cdb3de50d5763909b3d38ef900de8468a286 100644 (file)
--- a/lily/include/paper-book.hh
+++ b/lily/include/paper-book.hh
@@ -30,7 +30,7 @@
 class Paper_book : public Smob<Paper_book>
 {
 public:
-  SCM mark_smob ();
+  SCM mark_smob () const;
   static const char type_p_name_[];
   virtual ~Paper_book ();
 private: