+PERLVAR(Istrtab_mutex, perl_mutex) /* Mutex for string table access */
+#endif /* USE_5005THREADS */
+
+PERLVAR(Iuid, Uid_t) /* current real user id */
+PERLVAR(Ieuid, Uid_t) /* current effective user id */
+PERLVAR(Igid, Gid_t) /* current real group id */
+PERLVAR(Iegid, Gid_t) /* current effective group id */
+PERLVAR(Inomemok, bool) /* let malloc context handle nomem */
+PERLVAR(Ian, U32) /* malloc sequence number */
+PERLVAR(Icop_seqmax, U32) /* statement sequence number */
+PERLVAR(Iop_seqmax, U16) /* op sequence number */
+PERLVAR(Ievalseq, U32) /* eval sequence number */
+PERLVAR(Iorigenviron, char **)
+PERLVAR(Iorigalen, U32)
+PERLVAR(Ipidstatus, HV *) /* pid-to-status mappings for waitpid */
+PERLVARI(Imaxo, int, MAXO) /* maximum number of ops */
+PERLVAR(Iosname, char *) /* operating system */
+PERLVARI(Ish_path, char *, SH_PATH)/* full path of shell */
+PERLVAR(Isighandlerp, Sighandler_t)
+
+PERLVAR(Ixiv_arenaroot, XPV*) /* list of allocated xiv areas */
+PERLVAR(Ixiv_root, IV *) /* free xiv list */
+PERLVAR(Ixnv_root, NV *) /* free xnv list */
+PERLVAR(Ixrv_root, XRV *) /* free xrv list */
+PERLVAR(Ixpv_root, XPV *) /* free xpv list */
+PERLVAR(Ixpviv_root, XPVIV *) /* free xpviv list */
+PERLVAR(Ixpvnv_root, XPVNV *) /* free xpvnv list */
+PERLVAR(Ixpvcv_root, XPVCV *) /* free xpvcv list */
+PERLVAR(Ixpvav_root, XPVAV *) /* free xpvav list */
+PERLVAR(Ixpvhv_root, XPVHV *) /* free xpvhv list */
+PERLVAR(Ixpvmg_root, XPVMG *) /* free xpvmg list */
+PERLVAR(Ixpvlv_root, XPVLV *) /* free xpvlv list */
+PERLVAR(Ixpvbm_root, XPVBM *) /* free xpvbm list */
+PERLVAR(Ihe_root, HE *) /* free he list */
+PERLVAR(Inice_chunk, char *) /* a nice chunk of memory to reuse */
+PERLVAR(Inice_chunk_size, U32) /* how nice the chunk of memory is */
+
+PERLVARI(Irunops, runops_proc_t, MEMBER_TO_FPTR(RUNOPS_DEFAULT))
+
+PERLVARA(Itokenbuf,256, char)
+
+/*
+=for apidoc Amn|SV|PL_sv_undef
+This is the C<undef> SV. Always refer to this as C<&PL_sv_undef>.
+
+=for apidoc Amn|SV|PL_sv_no
+This is the C<false> SV. See C<PL_sv_yes>. Always refer to this as
+C<&PL_sv_no>.
+
+=for apidoc Amn|SV|PL_sv_yes
+This is the C<true> SV. See C<PL_sv_no>. Always refer to this as
+C<&PL_sv_yes>.
+
+=cut
+*/
+
+PERLVAR(Isv_undef, SV)
+PERLVAR(Isv_no, SV)
+PERLVAR(Isv_yes, SV)
+
+#ifdef CSH
+PERLVARI(Icshname, char *, CSH)
+PERLVAR(Icshlen, I32)
+#endif
+
+PERLVAR(Ilex_state, U32) /* next token is determined */
+PERLVAR(Ilex_defer, U32) /* state after determined token */
+PERLVAR(Ilex_expect, int) /* expect after determined token */
+PERLVAR(Ilex_brackets, I32) /* bracket count */
+PERLVAR(Ilex_formbrack, I32) /* bracket count at outer format level */
+PERLVAR(Ilex_casemods, I32) /* casemod count */
+PERLVAR(Ilex_dojoin, I32) /* doing an array interpolation */
+PERLVAR(Ilex_starts, I32) /* how many interps done on level */
+PERLVAR(Ilex_stuff, SV *) /* runtime pattern from m// or s/// */
+PERLVAR(Ilex_repl, SV *) /* runtime replacement from s/// */
+PERLVAR(Ilex_op, OP *) /* extra info to pass back on op */
+PERLVAR(Ilex_inpat, OP *) /* in pattern $) and $| are special */
+PERLVAR(Ilex_inwhat, I32) /* what kind of quoting are we in */
+PERLVAR(Ilex_brackstack,char *) /* what kind of brackets to pop */
+PERLVAR(Ilex_casestack, char *) /* what kind of case mods in effect */
+
+/* What we know when we're in LEX_KNOWNEXT state. */
+PERLVARA(Inextval,5, YYSTYPE) /* value of next token, if any */
+PERLVARA(Inexttype,5, I32) /* type of next token */
+PERLVAR(Inexttoke, I32)
+
+PERLVAR(Ilinestr, SV *)
+PERLVAR(Ibufptr, char *)
+PERLVAR(Ioldbufptr, char *)
+PERLVAR(Ioldoldbufptr, char *)
+PERLVAR(Ibufend, char *)
+PERLVARI(Iexpect,int, XSTATE) /* how to interpret ambiguous tokens */
+
+PERLVAR(Imulti_start, I32) /* 1st line of multi-line string */
+PERLVAR(Imulti_end, I32) /* last line of multi-line string */
+PERLVAR(Imulti_open, I32) /* delimiter of said string */
+PERLVAR(Imulti_close, I32) /* delimiter of said string */
+
+PERLVAR(Ierror_count, I32) /* how many errors so far, max 10 */
+PERLVAR(Isubline, I32) /* line this subroutine began on */
+PERLVAR(Isubname, SV *) /* name of current subroutine */
+
+PERLVAR(Imin_intro_pending, I32) /* start of vars to introduce */
+PERLVAR(Imax_intro_pending, I32) /* end of vars to introduce */
+PERLVAR(Ipadix, I32) /* max used index in current "register" pad */
+PERLVAR(Ipadix_floor, I32) /* how low may inner block reset padix */
+PERLVAR(Ipad_reset_pending, I32) /* reset pad on next attempted alloc */
+
+PERLVAR(Ilast_uni, char *) /* position of last named-unary op */
+PERLVAR(Ilast_lop, char *) /* position of last list operator */
+PERLVAR(Ilast_lop_op, OPCODE) /* last list operator */
+PERLVAR(Iin_my, I32) /* we're compiling a "my" (or "our") declaration */
+PERLVAR(Iin_my_stash, HV *) /* declared class of this "my" declaration */
+#ifdef FCRYPT
+PERLVAR(Icryptseen, bool) /* has fast crypt() been initialized? */
+#endif
+
+PERLVAR(Ihints, U32) /* pragma-tic compile-time flags */
+
+PERLVAR(Idebug, VOL U32) /* flags given to -D switch */
+
+PERLVAR(Iamagic_generation, long)
+
+#ifdef USE_LOCALE_COLLATE
+PERLVAR(Icollation_ix, U32) /* Collation generation index */
+PERLVAR(Icollation_name,char *) /* Name of current collation */
+PERLVARI(Icollation_standard, bool, TRUE)
+ /* Assume simple collation */
+PERLVAR(Icollxfrm_base, Size_t) /* Basic overhead in *xfrm() */
+PERLVARI(Icollxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
+#endif /* USE_LOCALE_COLLATE */
+
+#ifdef USE_LOCALE_NUMERIC
+
+PERLVAR(Inumeric_name, char *) /* Name of current numeric locale */
+PERLVARI(Inumeric_standard, bool, TRUE)
+ /* Assume simple numerics */
+PERLVARI(Inumeric_local, bool, TRUE)
+ /* Assume local numerics */
+
+PERLVAR(Inumeric_compat1, char)
+ /* Used to be numeric_radix */
+#endif /* !USE_LOCALE_NUMERIC */
+
+/* utf8 character classes */
+PERLVAR(Iutf8_alnum, SV *)
+PERLVAR(Iutf8_alnumc, SV *)
+PERLVAR(Iutf8_ascii, SV *)
+PERLVAR(Iutf8_alpha, SV *)
+PERLVAR(Iutf8_space, SV *)
+PERLVAR(Iutf8_cntrl, SV *)
+PERLVAR(Iutf8_graph, SV *)
+PERLVAR(Iutf8_digit, SV *)
+PERLVAR(Iutf8_upper, SV *)
+PERLVAR(Iutf8_lower, SV *)
+PERLVAR(Iutf8_print, SV *)
+PERLVAR(Iutf8_punct, SV *)
+PERLVAR(Iutf8_xdigit, SV *)
+PERLVAR(Iutf8_mark, SV *)
+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)
+PERLVAR(Ilast_swash_tmps, U8 *)
+PERLVAR(Ilast_swash_slen, STRLEN)
+
+/* perly.c globals */
+PERLVAR(Iyydebug, int)
+PERLVAR(Iyynerrs, int)
+PERLVAR(Iyyerrflag, int)
+PERLVAR(Iyychar, int)
+PERLVAR(Iyyval, YYSTYPE)
+PERLVAR(Iyylval, YYSTYPE)
+
+PERLVAR(Iglob_index, int)
+PERLVAR(Isrand_called, bool)
+PERLVARA(Iuudmap,256, char)
+PERLVAR(Ibitcount, char *)
+
+#ifdef USE_5005THREADS
+PERLVAR(Isv_mutex, perl_mutex) /* Mutex for allocating SVs in sv.c */
+PERLVAR(Ieval_mutex, perl_mutex) /* Mutex for doeval */
+PERLVAR(Ieval_cond, perl_cond) /* Condition variable for doeval */
+PERLVAR(Ieval_owner, struct perl_thread *)
+ /* Owner thread for doeval */
+PERLVAR(Inthreads, int) /* Number of threads currently */
+PERLVAR(Ithreads_mutex, perl_mutex) /* Mutex for nthreads and thread list */
+PERLVAR(Inthreads_cond, perl_cond) /* Condition variable for nthreads */
+PERLVAR(Isvref_mutex, perl_mutex) /* Mutex for SvREFCNT_{inc,dec} */
+PERLVARI(Ithreadsv_names,char *, THREADSV_NAMES)
+#ifdef FAKE_THREADS
+PERLVAR(Icurthr, struct perl_thread *)
+ /* Currently executing (fake) thread */
+#endif
+
+PERLVAR(Icred_mutex, perl_mutex) /* altered credentials in effect */
+
+#endif /* USE_5005THREADS */
+
+PERLVAR(Ipsig_ptr, SV**)
+PERLVAR(Ipsig_name, SV**)
+
+#if defined(PERL_IMPLICIT_SYS)
+PERLVAR(IMem, struct IPerlMem*)
+PERLVAR(IMemShared, struct IPerlMem*)
+PERLVAR(IMemParse, struct IPerlMem*)
+PERLVAR(IEnv, struct IPerlEnv*)
+PERLVAR(IStdIO, struct IPerlStdIO*)
+PERLVAR(ILIO, struct IPerlLIO*)
+PERLVAR(IDir, struct IPerlDir*)
+PERLVAR(ISock, struct IPerlSock*)
+PERLVAR(IProc, struct IPerlProc*)
+#endif
+
+#if defined(USE_ITHREADS)
+PERLVAR(Iptr_table, PTR_TBL_t*)
+#endif
+PERLVARI(Ibeginav_save, AV*, Nullav) /* save BEGIN{}s when compiling */
+
+#ifdef USE_5005THREADS
+PERLVAR(Ifdpid_mutex, perl_mutex) /* mutex for fdpid array */
+PERLVAR(Isv_lock_mutex, perl_mutex) /* mutex for SvLOCK macro */