+/* The cached value of Vsystem_name. This is used only to compare it
+ to Vsystem_name, so it need not be visible to the GC. */
+static Lisp_Object cached_system_name;
+
+static void
+init_and_cache_system_name (void)
+{
+ init_system_name ();
+ cached_system_name = Vsystem_name;
+}
+