3 files changed, 3 insertions, 10 deletions
diff --git a/libs/ardour/ardour/file_source.h b/libs/ardour/ardour/file_source.h
index 76c3c57e36..38449def26 100644
--- a/libs/ardour/ardour/file_source.h
+++ b/libs/ardour/ardour/file_source.h
@@ -41,6 +41,7 @@ public:
 	int  move_to_trash (const Glib::ustring& trash_dir_name);
 	void mark_take (const Glib::ustring& id);
 	void mark_immutable ();
+	void mark_nonremovable ();
 
 	const Glib::ustring& take_id ()        const { return _take_id; }
 	bool                 within_session () const { return _within_session; }
diff --git a/libs/ardour/ardour/region.h b/libs/ardour/ardour/region.h
index a30bb8660c..9d85c5b43d 100644
--- a/libs/ardour/ardour/region.h
+++ b/libs/ardour/ardour/region.h
@@ -353,7 +353,7 @@ class Region
 
 	void register_properties ();
 
-private:
+protected:
 	void use_sources (SourceList const &);
 };
 
diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index 9abf7ff8f0..6f750e6fd0 100644
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -106,15 +106,7 @@ class Source : public SessionObject
 	Flag         flags() const { return _flags; }
 
         void inc_use_count () { g_atomic_int_inc (&_use_count); }
-        void dec_use_count () { 
-#ifndef NDEBUG
-                gint oldval = g_atomic_int_exchange_and_add (&_use_count, -1);
-                assert (oldval > 0);
-#else 
-                g_atomic_int_exchange_and_add (&_use_count, -1);
-#endif
-        }
-
+        void dec_use_count ();
         int  use_count() const { return g_atomic_int_get (&_use_count); }
         bool used() const { return use_count() > 0; }