PERLVAR(Iutf8_toupper, SV *)
PERLVAR(Iutf8_totitle, SV *)
PERLVAR(Iutf8_tolower, SV *)
+PERLVAR(Iutf8_tofold, SV *)
PERLVAR(Ilast_swash_hv, HV *)
PERLVAR(Ilast_swash_klen, U32)
PERLVARA(Ilast_swash_key,10, U8)
#endif
PERLVAR(sharedsv_space, PerlInterpreter*)
-PERLVAR(sharesv_space_mutex, perl_mutex)
+PERLVAR(sharedsv_space_mutex, perl_mutex)
#endif
PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */
+#ifdef PERLIO_LAYERS
+PERLVARI(Iperlio, PerlIO *,NULL)
+PERLVARI(Iknown_layers, PerlIO_list_t *,NULL)
+PERLVARI(Idef_layerlist, PerlIO_list_t *,NULL)
+#endif
+
+PERLVARI(Iencoding, SV*, Nullsv) /* character encoding */
+
+PERLVAR(Idebug_pad, struct perl_debug_pad) /* always needed because of the re extension */
+
/* New variables must be added to the very end for binary compatibility.
* XSUB.h provides wrapper functions via perlapi.h that make this
* irrelevant, but not all code may be expected to #include XSUB.h. */
+
+