+#ifdef USE_LOCALE_NUMERIC
+
+PERLVAR(Inumeric_radix_sv, SV *) /* The radix separator if not '.' */
+
+#endif
+
+#if defined(USE_ITHREADS)
+PERLVAR(Iregex_pad, SV**) /* All regex objects */
+PERLVAR(Iregex_padav, AV*) /* All regex objects */
+
+#ifdef USE_REENTRANT_API
+PERLVAR(Ireentrant_buffer, REBUF*) /* here we store the _r buffers */
+#endif
+
+PERLVAR(sharedsv_space, PerlInterpreter*)
+PERLVAR(sharesv_space_mutex, perl_mutex)
+
+#endif
+
+PERLVAR(Isavebegin, bool) /* save BEGINs for compiler */
+
+PERLVAR(Icustom_op_names, HV*) /* Names of user defined ops */
+PERLVAR(Icustom_op_descs, HV*) /* Descriptions of user defined ops */