#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 */
+
/* 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. */
+
+