X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fgrob-interface-scheme.cc;h=11a5576169761bf4c4c436d7deb92e3b96bce9bc;hb=97a0169312a260933246ab224e4f8b0969871dd5;hp=bbbe7cfe8563004cd971444da90994cdb2092677;hpb=d61cf3bbdb1c6670a127ba3baddf2f04d3e34fd3;p=lilypond.git

diff --git a/lily/grob-interface-scheme.cc b/lily/grob-interface-scheme.cc
index bbbe7cfe85..11a5576169 100644
--- a/lily/grob-interface-scheme.cc
+++ b/lily/grob-interface-scheme.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2005--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2005--2015 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
@@ -19,20 +19,17 @@
 
 #include "lily-guile.hh"
 #include "std-string.hh"
+#include "protected-scm.hh"
 
-static SCM all_ifaces;
+static Protected_scm all_ifaces;
 
 void
 internal_add_interface (SCM a, SCM b, SCM c)
 {
-  if (!all_ifaces)
-    {
-      SCM tab = scm_c_make_hash_table (59);
-      all_ifaces = tab;
-      scm_permanent_object (tab);
-    }
-
-  SCM entry = scm_list_n (a, b, c, SCM_UNDEFINED);
+  if (!all_ifaces.is_bound ())
+    all_ifaces = scm_c_make_hash_table (59);
+
+  SCM entry = scm_list_3 (a, b, c);
 
   scm_hashq_set_x (all_ifaces, a, entry);
 }