#if defined(USE_ITHREADS)
PERLVAR(Gperlio_mutex, perl_mutex) /* Mutex for perlio fd refcounts */
#endif
+
+/* this is currently set without MUTEX protection, so keep it a type which
+ * can be set atomically (ie not a bit field) */
+PERLVARI(Gveto_cleanup, int, FALSE) /* exit without cleanup */
+