$OpenBSD$
make this function compile correctly under clang
Index: lib/utils/mu-str.c
--- lib/utils/mu-str.c.orig
+++ lib/utils/mu-str.c
@@ -49,7 +49,7 @@ mu_str_size_s  (size_t s)
 char*
 mu_str_size (size_t s)
 {
-	return g_strdup (mu_str_size_s(s));
+	return g_format_size_for_display ((goffset)s);
 }