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fixup Perl_magic_freemglob()
[perl5.git] / intrpvar.h
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1/* intrpvar.h
2 *
3 * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
1129b882 4 * 2006, 2007, 2008 by Larry Wall and others
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5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
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11#include "handy.h"
12
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13/* These variables are per-interpreter in threaded/multiplicity builds,
14 * global otherwise.
15
d7cb65f2 16 * Don't forget to re-run regen/embed.pl to propagate changes! */
cb68f92d 17
ab686ae8 18/* New variables must be added to the very end for binary compatibility. */
6537fe72 19
b8393ac7 20/* DON'T FORGET to add your variable also to perl_clone()! (in sv.c) */
02506efe 21
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22/* The 'I' prefix is only needed for vars that need appropriate #defines
23 * generated when built with or without MULTIPLICITY. It is also used
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24 * to generate the appropriate export list for win32. If the variable
25 * needs to be initialized, use PERLVARI.
cb68f92d 26 *
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27 * When building without MULTIPLICITY, these variables will be truly global.
28 *
29 * Important ones in the first cache line (if alignment is done right) */
30
115ff745 31PERLVAR(I, stack_sp, SV **) /* top of the stack */
115ff745 32PERLVAR(I, op, OP *) /* currently executing op */
115ff745 33PERLVAR(I, curpad, SV **) /* active pad (lexicals+tmps) */
907b3e23 34
115ff745
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35PERLVAR(I, stack_base, SV **)
36PERLVAR(I, stack_max, SV **)
907b3e23 37
115ff745 38PERLVAR(I, savestack, ANY *) /* items that need to be restored when
1604cfb0 39 LEAVEing scopes we've ENTERed */
115ff745
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40PERLVAR(I, savestack_ix, I32)
41PERLVAR(I, savestack_max, I32)
42
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43PERLVAR(I, scopestack, I32 *) /* scopes we've ENTERed */
44PERLVAR(I, scopestack_ix, I32)
45PERLVAR(I, scopestack_max, I32)
46
115ff745 47PERLVAR(I, tmps_stack, SV **) /* mortals we've made */
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48PERLVARI(I, tmps_ix, SSize_t, -1)
49PERLVARI(I, tmps_floor, SSize_t, -1)
ba367634 50PERLVAR(I, tmps_max, SSize_t) /* first unalloced slot in tmps stack */
19bc2726 51
115ff745 52PERLVAR(I, markstack, I32 *) /* stack_sp locations we're
1604cfb0 53 remembering */
115ff745
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54PERLVAR(I, markstack_ptr, I32 *)
55PERLVAR(I, markstack_max, I32 *)
907b3e23 56
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57PERLVARI(I, sub_generation, U32, 1) /* incr to invalidate method cache */
58
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59#ifdef PERL_HASH_RANDOMIZE_KEYS
60#ifdef USE_PERL_PERTURB_KEYS
61PERLVARI(I, hash_rand_bits_enabled, U8, 1) /* used to randomize hash stuff 0 == no-random, 1 == random, 2 == determinsitic */
62#endif
0e0ab621 63PERLVARI(I, hash_rand_bits, UV, 0) /* used to randomize hash stuff */
6a5b4183 64#endif
19bc2726 65PERLVAR(I, strtab, HV *) /* shared string table */
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66/* prog counter for the currently executing OP_MULTIDEREF Used to signal
67 * to S_find_uninit_var() where we are */
68PERLVAR(I, multideref_pc, UNOP_AUX_item *)
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69
70/* Fields used by magic variables such as $@, $/ and so on */
71PERLVAR(I, curpm, PMOP *) /* what to do \ interps in REs from */
5585e758 72PERLVAR(I, curpm_under, PMOP *) /* what to do \ interps in REs from */
19bc2726 73
bc2f1ca1 74PERLVAR(I, tainting, bool) /* ? doing taint checks */
d48c660d 75PERLVARI(I, tainted, bool, FALSE) /* using variables controlled by $< */
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76
77/* PL_delaymagic is currently used for two purposes: to assure simultaneous
78 * updates in ($<,$>) = ..., and to assure atomic update in push/unshift
79 * @ISA, It works like this: a few places such as pp_push set the DM_DELAY
80 * flag; then various places such as av_store() skip mg_set(ary) if this
81 * flag is set, and various magic vtable methods set flags like
82 * DM_ARRAY_ISA if they've seen something of that ilk. Finally when
83 * control returns to pp_push or whatever, it sees if any of those flags
84 * have been set, and if so finally calls mg_set().
85 *
86 * NB: PL_delaymagic is automatically saved and restored by JUMPENV_PUSH
87 * / POP. This removes the need to do ENTER/SAVEI16(PL_delaymagic)/LEAVE
88 * in hot code like pp_push.
89 */
19bc2726 90PERLVAR(I, delaymagic, U16) /* ($<,$>) = ... */
a68090fe 91
1172c104 92/*
168f9cb8 93=for apidoc_section $warning
b5282d7c 94=for apidoc mn|U8|PL_dowarn
19bc2726 95
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96The C variable that roughly corresponds to Perl's C<$^W> warning variable.
97However, C<$^W> is treated as a boolean, whereas C<PL_dowarn> is a
98collection of flag bits.
19bc2726 99
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100On threaded perls, each thread has an independent copy of this variable;
101each initialized at creation time with the current value of the creating
102thread's copy.
103
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104=cut
105*/
106
107PERLVAR(I, dowarn, U8)
108
109#if defined (PERL_UTF8_CACHE_ASSERT) || defined (DEBUGGING)
110# define PERL___I -1
111#else
112# define PERL___I 1
113#endif
114PERLVARI(I, utf8cache, I8, PERL___I) /* Is the utf8 caching code enabled? */
115#undef PERL___I
116
c07b34e4 117/*
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118=for apidoc Amn|GV *|PL_defgv
119
120The GV representing C<*_>. Useful for access to C<$_>.
121
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122On threaded perls, each thread has an independent copy of this variable;
123each initialized at creation time with the current value of the creating
124thread's copy.
125
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126=cut
127*/
128
129PERLVAR(I, localizing, U8) /* are we processing a local() list? */
130PERLVAR(I, in_eval, U8) /* trap "fatal" errors? */
131PERLVAR(I, defgv, GV *) /* the *_ glob */
132
133/*
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134=for apidoc Amn|HV*|PL_curstash
135
136The stash for the package code will be compiled into.
137
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138On threaded perls, each thread has an independent copy of this variable;
139each initialized at creation time with the current value of the creating
140thread's copy.
141
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142=cut
143*/
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144
145/* Stashes */
146PERLVAR(I, defstash, HV *) /* main symbol table */
147PERLVAR(I, curstash, HV *) /* symbol table for current package */
148
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149/*
150=for apidoc Amn|COP*|PL_curcop
151
152The currently active COP (control op) roughly representing the current
153statement in the source.
154
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155On threaded perls, each thread has an independent copy of this variable;
156each initialized at creation time with the current value of the creating
157thread's copy.
158
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159=cut
160*/
161
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162PERLVAR(I, curcop, COP *)
163PERLVAR(I, curstack, AV *) /* THE STACK */
164PERLVAR(I, curstackinfo, PERL_SI *) /* current stack + context */
165PERLVAR(I, mainstack, AV *) /* the stack when nothing funny is
1604cfb0 166 happening */
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167
168/* memory management */
169PERLVAR(I, sv_count, IV) /* how many SV* are currently allocated */
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170
171PERLVAR(I, sv_root, SV *) /* storage for SVs belonging to interp */
172PERLVAR(I, sv_arenaroot, SV *) /* list of areas for garbage collection */
173
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174/* fake PMOP that PL_curpm points to while in (?{}) so $1 et al are visible */
175PERLVARI(I, reg_curpm, PMOP*, NULL)
176
19bc2726 177/* the currently active slab in a chain of slabs of regmatch states,
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178 * and the currently active state within that slab. This stack of states
179 * is shared amongst re-entrant calls to the regex engine */
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180
181PERLVARI(I, regmatch_slab, regmatch_slab *, NULL)
182PERLVAR(I, regmatch_state, regmatch_state *)
183
184PERLVAR(I, comppad, PAD *) /* storage for lexically scoped temporaries */
185
186/*
36f453d1 187=for apidoc_section $SV
19bc2726 188=for apidoc Amn|SV|PL_sv_undef
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189This is the C<undef> SV. It is readonly. Always refer to this as
190C<&PL_sv_undef>.
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191
192=for apidoc Amn|SV|PL_sv_no
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193This is the C<false> SV. It is readonly. See C<L</PL_sv_yes>>. Always refer
194to this as C<&PL_sv_no>.
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195
196=for apidoc Amn|SV|PL_sv_yes
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197This is the C<true> SV. It is readonly. See C<L</PL_sv_no>>. Always refer to
198this as C<&PL_sv_yes>.
19bc2726 199
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200=for apidoc Amn|SV|PL_sv_zero
201This readonly SV has a zero numeric value and a C<"0"> string value. It's
202similar to C<L</PL_sv_no>> except for its string value. Can be used as a
203cheap alternative to C<mXPUSHi(0)> for example. Always refer to this as
204C<&PL_sv_zero>. Introduced in 5.28.
205
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206=cut
207*/
208
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209#ifdef MULTIPLICITY
210PERLVAR(I, sv_yes, SV)
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211PERLVAR(I, sv_undef, SV)
212PERLVAR(I, sv_no, SV)
5a6c2837 213PERLVAR(I, sv_zero, SV)
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214#else
215/* store the immortals as an array to ensure they are contiguous in
216 * memory: makes SvIMMORTAL_INTERP(sv) possible */
217PERLVARA(I, sv_immortals, 4, SV)
218#endif
5a6c2837 219
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220PERLVAR(I, padname_undef, PADNAME)
221PERLVAR(I, padname_const, PADNAME)
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222
223/*
224=for apidoc Cmn||PL_Sv
225
226A scratch pad SV for whatever temporary use you need. Chiefly used as a
227fallback by macros on platforms where L<perlapi/PERL_USE_GCC_BRACE_GROUPS>> is
228unavailable, and which would otherwise would evaluate their SV parameter more
229than once.
230
231=cut
232*/
233PERLVAR(I, Sv, SV *)
234
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235PERLVAR(I, parser, yy_parser *) /* current parser state */
236
237PERLVAR(I, stashcache, HV *) /* Cache to speed up S_method_common */
238
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239
240/*
241=for apidoc Amn|STRLEN|PL_na
242
243A convenience variable which is typically used with C<SvPV> when one
244doesn't care about the length of the string. It is usually more efficient
245to either declare a local variable and use that instead or to use the
246C<SvPV_nolen> macro.
247
248=cut
249*/
250
115ff745 251PERLVAR(I, na, STRLEN) /* for use in SvPV when length is
1604cfb0 252 Not Applicable */
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253
254/* stat stuff */
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255PERLVAR(I, statcache, Stat_t) /* _ */
256PERLVAR(I, statgv, GV *)
257PERLVARI(I, statname, SV *, NULL)
907b3e23 258
907b3e23 259/*
36f453d1 260=for apidoc_section $io
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261=for apidoc mn|SV*|PL_rs
262
263The input record separator - C<$/> in Perl space.
264
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265On threaded perls, each thread has an independent copy of this variable;
266each initialized at creation time with the current value of the creating
267thread's copy.
268
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269=for apidoc mn|GV*|PL_last_in_gv
270
154e47c8 271The GV which was last used for a filehandle input operation. (C<< <FH> >>)
907b3e23 272
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273On threaded perls, each thread has an independent copy of this variable;
274each initialized at creation time with the current value of the creating
275thread's copy.
276
e23d9e2f 277=for apidoc mn|GV*|PL_ofsgv
907b3e23 278
e23d9e2f 279The glob containing the output field separator - C<*,> in Perl space.
907b3e23 280
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281On threaded perls, each thread has an independent copy of this variable;
282each initialized at creation time with the current value of the creating
283thread's copy.
284
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285=cut
286*/
287
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288PERLVAR(I, rs, SV *) /* input record separator $/ */
289PERLVAR(I, last_in_gv, GV *) /* GV used in last <FH> */
290PERLVAR(I, ofsgv, GV *) /* GV of output field separator *, */
291PERLVAR(I, defoutgv, GV *) /* default FH for output */
292PERLVARI(I, chopset, const char *, " \n-") /* $: */
293PERLVAR(I, formtarget, SV *)
294PERLVAR(I, bodytarget, SV *)
295PERLVAR(I, toptarget, SV *)
907b3e23 296
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297
298PERLVAR(I, restartop, OP *) /* propagating an error from croak? */
299PERLVAR(I, restartjmpenv, JMPENV *) /* target frame for longjmp in die */
907b3e23 300
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301PERLVAR(I, top_env, JMPENV *) /* ptr to current sigjmp environment */
302PERLVAR(I, start_env, JMPENV) /* empty startup sigjmp environment */
303PERLVARI(I, errors, SV *, NULL) /* outstanding queued errors */
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304
305/* statics "owned" by various functions */
115ff745 306PERLVAR(I, hv_fetch_ent_mh, HE*) /* owned by hv_fetch_ent() */
907b3e23 307
115ff745 308PERLVAR(I, lastgotoprobe, OP*) /* from pp_ctl.c */
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309
310/* sort stuff */
115ff745
NC
311PERLVAR(I, sortcop, OP *) /* user defined sort routine */
312PERLVAR(I, sortstash, HV *) /* which is in some package or other */
313PERLVAR(I, firstgv, GV *) /* $a */
314PERLVAR(I, secondgv, GV *) /* $b */
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315
316/* float buffer */
115ff745
NC
317PERLVAR(I, efloatbuf, char *)
318PERLVAR(I, efloatsize, STRLEN)
907b3e23 319
115ff745 320PERLVARI(I, dumpindent, U16, 4) /* number of blanks per dump
1604cfb0 321 indentation level */
907b3e23 322
7b93aae2 323/*
36f453d1 324=for apidoc_section $embedding
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325=for apidoc Amn|U8|PL_exit_flags
326
327Contains flags controlling perl's behaviour on exit():
328
329=over
330
331=item * C<PERL_EXIT_DESTRUCT_END>
332
333If set, END blocks are executed when the interpreter is destroyed.
334This is normally set by perl itself after the interpreter is
335constructed.
336
337=item * C<PERL_EXIT_ABORT>
338
339Call C<abort()> on exit. This is used internally by perl itself to
340abort if exit is called while processing exit.
341
342=item * C<PERL_EXIT_WARN>
343
344Warn on exit.
345
346=item * C<PERL_EXIT_EXPECTED>
347
348Set by the L<perlfunc/exit> operator.
349
350=back
351
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352=for apidoc Amnh||PERL_EXIT_EXPECTED
353=for apidoc Amnh||PERL_EXIT_ABORT
354=for apidoc Amnh||PERL_EXIT_DESTRUCT_END
355=for apidoc Amnh||PERL_EXIT_WARN
356
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357On threaded perls, each thread has an independent copy of this variable;
358each initialized at creation time with the current value of the creating
359thread's copy.
360
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361=cut
362*/
363
e914d9bb 364PERLVAR(I, exit_flags, U8) /* was exit() unexpected, etc. */
157b3822 365
115ff745 366PERLVAR(I, utf8locale, bool) /* utf8 locale detected */
31f05a37 367PERLVAR(I, in_utf8_CTYPE_locale, bool)
165a1c52 368PERLVAR(I, in_utf8_COLLATE_locale, bool)
b8df1494 369PERLVAR(I, in_utf8_turkic_locale, bool)
bffa51e2 370#if defined(USE_ITHREADS) && ! defined(USE_THREAD_SAFE_LOCALE)
49d7d366 371PERLVARI(I, lc_numeric_mutex_depth, int, 0) /* Emulate general semaphore */
bffa51e2 372#endif
47280b20
KW
373PERLVARA(I, locale_utf8ness, 256, char)
374
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375#ifdef USE_LOCALE_CTYPE
376 PERLVAR(I, warn_locale, SV *)
377#endif
907b3e23 378
87c1d905 379PERLVARA(I, colors,6, char *) /* values from PERL_RE_COLORS env var */
907b3e23 380
9ea12537 381/*
36f453d1 382=for apidoc_section $optree_construction
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383=for apidoc Amn|peep_t|PL_peepp
384
385Pointer to the per-subroutine peephole optimiser. This is a function
386that gets called at the end of compilation of a Perl subroutine (or
387equivalently independent piece of Perl code) to perform fixups of
388some ops and to perform small-scale optimisations. The function is
389called once for each subroutine that is compiled, and is passed, as sole
390parameter, a pointer to the op that is the entry point to the subroutine.
391It modifies the op tree in place.
392
393The peephole optimiser should never be completely replaced. Rather,
394add code to it by wrapping the existing optimiser. The basic way to do
395this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
396If the new code wishes to operate on ops throughout the subroutine's
397structure, rather than just at the top level, it is likely to be more
398convenient to wrap the L</PL_rpeepp> hook.
399
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400On threaded perls, each thread has an independent copy of this variable;
401each initialized at creation time with the current value of the creating
402thread's copy.
403
9ea12537
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404=cut
405*/
406
115ff745 407PERLVARI(I, peepp, peep_t, Perl_peep)
9ea12537
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408
409/*
410=for apidoc Amn|peep_t|PL_rpeepp
411
412Pointer to the recursive peephole optimiser. This is a function
413that gets called at the end of compilation of a Perl subroutine (or
414equivalently independent piece of Perl code) to perform fixups of some
415ops and to perform small-scale optimisations. The function is called
416once for each chain of ops linked through their C<op_next> fields;
417it is recursively called to handle each side chain. It is passed, as
418sole parameter, a pointer to the op that is at the head of the chain.
419It modifies the op tree in place.
420
421The peephole optimiser should never be completely replaced. Rather,
422add code to it by wrapping the existing optimiser. The basic way to do
423this can be seen in L<perlguts/Compile pass 3: peephole optimization>.
424If the new code wishes to operate only on ops at a subroutine's top level,
425rather than throughout the structure, it is likely to be more convenient
426to wrap the L</PL_peepp> hook.
427
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428On threaded perls, each thread has an independent copy of this variable;
429each initialized at creation time with the current value of the creating
430thread's copy.
431
9ea12537
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432=cut
433*/
434
115ff745 435PERLVARI(I, rpeepp, peep_t, Perl_rpeep)
907b3e23 436
2f175318
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437/*
438=for apidoc Amn|Perl_ophook_t|PL_opfreehook
439
440When non-C<NULL>, the function pointed by this variable will be called each time an OP is freed with the corresponding OP as the argument.
441This allows extensions to free any extra attribute they have locally attached to an OP.
442It is also assured to first fire for the parent OP and then for its kids.
443
444When you replace this variable, it is considered a good practice to store the possibly previously installed hook and that you recall it inside your own.
445
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446On threaded perls, each thread has an independent copy of this variable;
447each initialized at creation time with the current value of the creating
448thread's copy.
449
2f175318
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450=cut
451*/
452
115ff745 453PERLVARI(I, opfreehook, Perl_ophook_t, 0) /* op_free() hook */
f37b8c3f 454
115ff745
NC
455PERLVARI(I, watchaddr, char **, 0)
456PERLVAR(I, watchok, char *)
907b3e23 457
115ff745 458PERLVAR(I, perldb, U32)
d95e864f 459
115ff745 460PERLVAR(I, signals, U32) /* Using which pre-5.8 signals */
30b0736d 461
79968a97
NC
462PERLVAR(I, reentrant_retint, int) /* Integer return value from reentrant functions */
463
49f531da 464/* pseudo environmental stuff */
115ff745
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465PERLVAR(I, origargc, int)
466PERLVAR(I, origargv, char **)
467PERLVAR(I, envgv, GV *)
468PERLVAR(I, incgv, GV *)
469PERLVAR(I, hintgv, GV *)
470PERLVAR(I, origfilename, char *)
9a189793 471PERLVARI(I, xsubfilename, const char *, NULL)
115ff745
NC
472PERLVAR(I, diehook, SV *)
473PERLVAR(I, warnhook, SV *)
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474
475/* switches */
115ff745 476PERLVAR(I, patchlevel, SV *)
115ff745
NC
477PERLVAR(I, localpatches, const char * const *)
478PERLVARI(I, splitstr, const char *, " ")
479
480PERLVAR(I, minus_c, bool)
481PERLVAR(I, minus_n, bool)
482PERLVAR(I, minus_p, bool)
483PERLVAR(I, minus_l, bool)
484PERLVAR(I, minus_a, bool)
485PERLVAR(I, minus_F, bool)
486PERLVAR(I, doswitches, bool)
487PERLVAR(I, minus_E, bool)
954c1994 488
115ff745
NC
489PERLVAR(I, inplace, char *)
490PERLVAR(I, e_script, SV *)
49f531da 491
115ff745 492PERLVAR(I, basetime, Time_t) /* $^T */
d4cce5f1 493
115ff745 494PERLVARI(I, maxsysfd, I32, MAXSYSFD)
1604cfb0 495 /* top fd to pass to subprocesses */
115ff745 496PERLVAR(I, statusvalue, I32) /* $? */
49f531da 497#ifdef VMS
115ff745 498PERLVAR(I, statusvalue_vms, U32)
e5218da5 499#else
115ff745 500PERLVAR(I, statusvalue_posix, I32)
49f531da
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501#endif
502
115ff745
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503PERLVARI(I, sig_pending, int, 0) /* Number if highest signal pending */
504PERLVAR(I, psig_pend, int *) /* per-signal "count" of pending */
157b3822 505
49f531da 506/* shortcuts to various I/O objects */
115ff745
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507PERLVAR(I, stdingv, GV *) /* *STDIN */
508PERLVAR(I, stderrgv, GV *) /* *STDERR */
115ff745
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509PERLVAR(I, argvgv, GV *) /* *ARGV */
510PERLVAR(I, argvoutgv, GV *) /* *ARGVOUT */
511PERLVAR(I, argvout_stack, AV *)
49f531da
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512
513/* shortcuts to regexp stuff */
115ff745 514PERLVAR(I, replgv, GV *) /* *^R */
49f531da
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515
516/* shortcuts to misc objects */
115ff745 517PERLVAR(I, errgv, GV *) /* *@ */
49f531da
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518
519/* shortcuts to debugging objects */
115ff745
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520PERLVAR(I, DBgv, GV *) /* *DB::DB */
521PERLVAR(I, DBline, GV *) /* *DB::line */
954c1994
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522
523/*
36f453d1 524=for apidoc_section $debugging
2eb25c99 525=for apidoc mn|GV *|PL_DBsub
954c1994
GS
526When Perl is run in debugging mode, with the B<-d> switch, this GV contains
527the SV which holds the name of the sub being debugged. This is the C
528variable which corresponds to Perl's $DB::sub variable. See
fbe13c60 529C<L</PL_DBsingle>>.
954c1994 530
36f453d1
KW
531On threaded perls, each thread has an independent copy of this variable;
532each initialized at creation time with the current value of the creating
533thread's copy.
534
2eb25c99 535=for apidoc mn|SV *|PL_DBsingle
954c1994 536When Perl is run in debugging mode, with the B<-d> switch, this SV is a
7889fe52 537boolean which indicates whether subs are being single-stepped.
954c1994
GS
538Single-stepping is automatically turned on after every step. This is the C
539variable which corresponds to Perl's $DB::single variable. See
fbe13c60 540C<L</PL_DBsub>>.
954c1994 541
36f453d1
KW
542On threaded perls, each thread has an independent copy of this variable;
543each initialized at creation time with the current value of the creating
544thread's copy.
545
2eb25c99 546=for apidoc mn|SV *|PL_DBtrace
954c1994
GS
547Trace variable used when Perl is run in debugging mode, with the B<-d>
548switch. This is the C variable which corresponds to Perl's $DB::trace
fbe13c60 549variable. See C<L</PL_DBsingle>>.
954c1994 550
36f453d1
KW
551On threaded perls, each thread has an independent copy of this variable;
552each initialized at creation time with the current value of the creating
553thread's copy.
554
954c1994
GS
555=cut
556*/
557
115ff745
NC
558PERLVAR(I, DBsub, GV *) /* *DB::sub */
559PERLVAR(I, DBsingle, SV *) /* $DB::single */
560PERLVAR(I, DBtrace, SV *) /* $DB::trace */
561PERLVAR(I, DBsignal, SV *) /* $DB::signal */
562PERLVAR(I, dbargs, AV *) /* args to call listed by caller function */
49f531da 563
a6d69523
TC
564PERLVARA(I, DBcontrol, DBVARMG_COUNT, IV) /* IV versions of $DB::single, trace, signal */
565
49f531da 566/* symbol tables */
115ff745
NC
567PERLVAR(I, debstash, HV *) /* symbol table for perldb package */
568PERLVAR(I, globalstash, HV *) /* global keyword overrides imported here */
569PERLVAR(I, curstname, SV *) /* name of current package */
570PERLVAR(I, beginav, AV *) /* names of BEGIN subroutines */
571PERLVAR(I, endav, AV *) /* names of END subroutines */
572PERLVAR(I, unitcheckav, AV *) /* names of UNITCHECK subroutines */
573PERLVAR(I, checkav, AV *) /* names of CHECK subroutines */
574PERLVAR(I, initav, AV *) /* names of INIT subroutines */
49f531da 575
49f531da 576/* subprocess state */
115ff745 577PERLVAR(I, fdpid, AV *) /* keep fd-to-pid mappings for my_popen */
49f531da
NIS
578
579/* internal state */
115ff745 580PERLVARI(I, op_mask, char *, NULL) /* masked operations for safe evals */
49f531da 581
49f531da 582/* current interpreter roots */
115ff745
NC
583PERLVAR(I, main_cv, CV *)
584PERLVAR(I, main_root, OP *)
585PERLVAR(I, main_start, OP *)
586PERLVAR(I, eval_root, OP *)
587PERLVAR(I, eval_start, OP *)
49f531da
NIS
588
589/* runtime control stuff */
115ff745 590PERLVARI(I, curcopdb, COP *, NULL)
49f531da 591
115ff745
NC
592PERLVAR(I, filemode, int) /* so nextargv() can preserve mode */
593PERLVAR(I, lastfd, int) /* what to preserve mode on */
594PERLVAR(I, oldname, char *) /* what to preserve mode on */
00accf8d
NC
595/* Elements in this array have ';' appended and are injected as a single line
596 into the tokeniser. You can't put any (literal) newlines into any program
597 you stuff in into this array, as the point where it's injected is expecting
598 a single physical line. */
115ff745
NC
599PERLVAR(I, preambleav, AV *)
600PERLVAR(I, mess_sv, SV *)
601PERLVAR(I, ors_sv, SV *) /* output record separator $\ */
19bc2726 602
79968a97
NC
603/* funky return mechanisms */
604PERLVAR(I, forkprocess, int) /* so do_open |- can return proc# */
605
71eebe1e 606/* statics moved here for shared library purposes */
115ff745
NC
607PERLVARI(I, gensym, I32, 0) /* next symbol for getsym() to define */
608PERLVARI(I, cv_has_eval, bool, FALSE) /* PL_compcv includes an entereval or similar */
609PERLVAR(I, taint_warn, bool) /* taint warns instead of dying */
610PERLVARI(I, laststype, U16, OP_STAT)
19bc2726 611
115ff745 612PERLVARI(I, laststatval, int, -1)
d4cce5f1 613
19bc2726 614PERLVAR(I, modcount, I32) /* how much op_lvalue()ification in
1604cfb0 615 assignment? */
19bc2726 616
4b556e6c 617/* interpreter atexit processing */
115ff745
NC
618PERLVARI(I, exitlistlen, I32, 0) /* length of same */
619PERLVARI(I, exitlist, PerlExitListEntry *, NULL)
1604cfb0 620 /* list of exit functions */
954c1994
GS
621
622/*
36f453d1 623=for apidoc_section $HV
954c1994
GS
624=for apidoc Amn|HV*|PL_modglobal
625
7889fe52 626C<PL_modglobal> is a general purpose, interpreter global HV for use by
954c1994 627extensions that need to keep information on a per-interpreter basis.
7889fe52
NIS
628In a pinch, it can also be used as a symbol table for extensions
629to share data among each other. It is a good idea to use keys
954c1994
GS
630prefixed by the package name of the extension that owns the data.
631
36f453d1
KW
632On threaded perls, each thread has an independent copy of this variable;
633each initialized at creation time with the current value of the creating
634thread's copy.
635
954c1994
GS
636=cut
637*/
638
115ff745 639PERLVAR(I, modglobal, HV *) /* per-interp module data */
cb68f92d
GS
640
641/* these used to be in global before 5.004_68 */
115ff745 642PERLVARI(I, profiledata, U32 *, NULL) /* table of ops, counts */
cb68f92d 643
115ff745 644PERLVAR(I, compiling, COP) /* compiling/done executing marker */
cb68f92d 645
115ff745 646PERLVAR(I, compcv, CV *) /* currently compiling subroutine */
36c300bb 647PERLVAR(I, comppad_name, PADNAMELIST *) /* variable names for "my" variables */
d12be05d
DM
648PERLVAR(I, comppad_name_fill, PADOFFSET)/* last "introduced" variable offset */
649PERLVAR(I, comppad_name_floor, PADOFFSET)/* start of vars in innermost block */
4b556e6c
JD
650
651#ifdef HAVE_INTERP_INTERN
115ff745 652PERLVAR(I, sys_intern, struct interp_intern)
1604cfb0 653 /* platform internals */
4b556e6c
JD
654#endif
655
7fae4e64 656/* more statics moved here */
115ff745 657PERLVAR(I, DBcv, CV *) /* from perl.c */
75010704
DM
658PERLVARI(I, generation, int, 100) /* scan sequence# for OP_AASSIGN
659 compile-time common elem detection */
56953603 660
19bc2726
DM
661PERLVAR(I, unicode, U32) /* Unicode features: $ENV{PERL_UNICODE} or -C */
662
115ff745
NC
663PERLVARI(I, in_clean_objs,bool, FALSE) /* from sv.c */
664PERLVARI(I, in_clean_all, bool, FALSE) /* ptrs to freed SVs now legal */
665PERLVAR(I, nomemok, bool) /* let malloc context handle nomem */
666PERLVARI(I, savebegin, bool, FALSE) /* save BEGINs for compiler */
7fae4e64 667
19bc2726 668
985213f2
AB
669PERLVAR(I, delaymagic_uid, Uid_t) /* current real user id, only for delaymagic */
670PERLVAR(I, delaymagic_euid, Uid_t) /* current effective user id, only for delaymagic */
671PERLVAR(I, delaymagic_gid, Gid_t) /* current real group id, only for delaymagic */
672PERLVAR(I, delaymagic_egid, Gid_t) /* current effective group id, only for delaymagic */
115ff745 673PERLVARI(I, an, U32, 0) /* malloc sequence number */
be2b6a89 674
79968a97
NC
675/* Perl_Ibreakable_sub_generation_ptr was too long for VMS, hence "gen" */
676PERLVARI(I, breakable_sub_gen, U32, 0)
677
be2b6a89
DM
678#ifdef DEBUGGING
679 /* exercise wrap-around */
680 #define PERL_COP_SEQMAX (U32_MAX-50)
681#else
682 #define PERL_COP_SEQMAX 0
683#endif
115ff745 684PERLVARI(I, cop_seqmax, U32, PERL_COP_SEQMAX) /* statement sequence number */
be2b6a89
DM
685#undef PERL_COP_SEQMAX
686
115ff745
NC
687PERLVARI(I, evalseq, U32, 0) /* eval sequence number */
688PERLVAR(I, origalen, U32)
689PERLVAR(I, origenviron, char **)
ca0c25f6 690#ifdef PERL_USES_PL_PIDSTATUS
115ff745 691PERLVAR(I, pidstatus, HV *) /* pid-to-status mappings for waitpid */
ca0c25f6 692#endif
115ff745 693PERLVAR(I, osname, char *) /* operating system */
5c728af0 694
dc37125b
DM
695PERLVAR(I, sighandlerp, Sighandler_t)
696/* these two are provided only to solve library linkage issues; they
697 * should not be hooked by user code */
698PERLVAR(I, sighandler1p, Sighandler1_t)
699PERLVAR(I, sighandler3p, Sighandler3_t)
0672f40e 700
115ff745 701PERLVARA(I, body_roots, PERL_ARENA_ROOTS_SIZE, void*) /* array of body roots */
93e68bfb 702
8162b70e 703PERLVAR(I, debug, volatile U32) /* flags given to -D switch */
79968a97 704
e897f2d7 705PERLVARI(I, padlist_generation, U32, 1) /* id to identify padlist clones */
9f7da6d5 706
115ff745 707PERLVARI(I, runops, runops_proc_t, RUNOPS_DEFAULT)
0672f40e 708
115ff745 709PERLVAR(I, subname, SV *) /* name of current subroutine */
0672f40e 710
115ff745 711PERLVAR(I, subline, I32) /* line this subroutine began on */
d12be05d 712PERLVAR(I, min_intro_pending, PADOFFSET)/* start of vars to introduce */
d95e864f 713
d12be05d
DM
714PERLVAR(I, max_intro_pending, PADOFFSET)/* end of vars to introduce */
715PERLVAR(I, padix, PADOFFSET) /* lowest unused index - 1
1604cfb0 716 in current "register" pad */
d12be05d 717PERLVAR(I, constpadix, PADOFFSET) /* lowest unused for constants */
d95e864f 718
d12be05d 719PERLVAR(I, padix_floor, PADOFFSET) /* how low may inner block reset padix */
0672f40e 720
e9bc6d6b
KW
721#if defined(USE_POSIX_2008_LOCALE) \
722 && defined(USE_THREAD_SAFE_LOCALE) \
723 && ! defined(HAS_QUERYLOCALE)
724
725PERLVARA(I, curlocales, 12, char *)
726
727#endif
0672f40e 728#ifdef USE_LOCALE_COLLATE
e9bc6d6b 729
115ff745
NC
730PERLVAR(I, collation_name, char *) /* Name of current collation */
731PERLVAR(I, collxfrm_base, Size_t) /* Basic overhead in *xfrm() */
732PERLVARI(I, collxfrm_mult,Size_t, 2) /* Expansion factor in *xfrm() */
733PERLVARI(I, collation_ix, U32, 0) /* Collation generation index */
f28f4d2a 734PERLVARI(I, strxfrm_NUL_replacement, U8, 0) /* Code point to replace NULs */
c664130f
KW
735PERLVARI(I, strxfrm_is_behaved, bool, TRUE)
736 /* Assume until proven otherwise that it works */
a4a439fb 737PERLVARI(I, strxfrm_max_cp, U8, 0) /* Highest collating cp in locale */
115ff745 738PERLVARI(I, collation_standard, bool, TRUE)
1604cfb0 739 /* Assume simple collation */
0672f40e
GS
740#endif /* USE_LOCALE_COLLATE */
741
f7416781
KW
742PERLVARI(I, langinfo_buf, char *, NULL)
743PERLVARI(I, langinfo_bufsize, Size_t, 0)
9aac5db8
KW
744PERLVARI(I, setlocale_buf, char *, NULL)
745PERLVARI(I, setlocale_bufsize, Size_t, 0)
f7416781 746
19bc2726
DM
747#ifdef PERL_SAWAMPERSAND
748PERLVAR(I, sawampersand, U8) /* must save all match strings */
9f7da6d5 749#endif
95ca8690 750
79968a97
NC
751/* current phase the interpreter is in
752 for ordering this structure to remove holes, we're assuming that this is 4
753 bytes. */
754PERLVARI(I, phase, enum perl_phase, PERL_PHASE_CONSTRUCT)
755
756PERLVARI(I, in_load_module, bool, FALSE) /* to prevent recursions in PerlIO_find_layer */
757
63251dfc
RL
758PERLVAR(I, unsafe, bool)
759PERLVAR(I, colorset, bool) /* PERL_RE_COLORS env var is in use */
760
daf9aebe 761/*
36f453d1 762=for apidoc_section $embedding
daf9aebe
TC
763=for apidoc Amn|signed char|PL_perl_destruct_level
764
765This value may be set when embedding for full cleanup.
766
767Possible values:
768
769=over
770
771=item * 0 - none
772
773=item * 1 - full
774
775=item * 2 or greater - full with checks.
776
777=back
778
779If C<$ENV{PERL_DESTRUCT_LEVEL}> is set to an integer greater than the
780value of C<PL_perl_destruct_level> its value is used instead.
781
36f453d1
KW
782On threaded perls, each thread has an independent copy of this variable;
783each initialized at creation time with the current value of the creating
784thread's copy.
785
daf9aebe
TC
786=cut
787*/
79968a97
NC
788/* mod_perl is special, and also assigns a meaning -1 */
789PERLVARI(I, perl_destruct_level, signed char, 0)
9f7da6d5 790
63251dfc
RL
791PERLVAR(I, pad_reset_pending, bool) /* reset pad on next attempted alloc */
792
793PERLVAR(I, srand_called, bool)
794
0672f40e
GS
795#ifdef USE_LOCALE_NUMERIC
796
892e6465 797PERLVARI(I, numeric_underlying, bool, TRUE)
1604cfb0 798 /* Assume underlying locale numerics */
4c68b815 799PERLVARI(I, numeric_underlying_is_standard, bool, TRUE)
63251dfc
RL
800
801PERLVARI(I, numeric_standard, int, TRUE)
1604cfb0 802 /* Assume C locale numerics */
115ff745
NC
803PERLVAR(I, numeric_name, char *) /* Name of current numeric locale */
804PERLVAR(I, numeric_radix_sv, SV *) /* The radix separator if not '.' */
f8115845 805
7e5377f7 806# ifdef HAS_POSIX_2008_LOCALE
e1aa2579
KW
807
808PERLVARI(I, underlying_numeric_obj, locale_t, NULL)
809
810# endif
0672f40e
GS
811#endif /* !USE_LOCALE_NUMERIC */
812
c4a30c8c
NC
813/* Array of signal handlers, indexed by signal number, through which the C
814 signal handler dispatches. */
115ff745 815PERLVAR(I, psig_ptr, SV **)
c4a30c8c 816/* Array of names of signals, indexed by signal number, for (re)use as the first
d525a7b2
NC
817 argument to a signal handler. Only one block of memory is allocated for
818 both psig_name and psig_ptr. */
115ff745 819PERLVAR(I, psig_name, SV **)
1d7c1841 820
c5be433b 821#if defined(PERL_IMPLICIT_SYS)
115ff745
NC
822PERLVAR(I, Mem, struct IPerlMem *)
823PERLVAR(I, MemShared, struct IPerlMem *)
824PERLVAR(I, MemParse, struct IPerlMem *)
825PERLVAR(I, Env, struct IPerlEnv *)
826PERLVAR(I, StdIO, struct IPerlStdIO *)
827PERLVAR(I, LIO, struct IPerlLIO *)
828PERLVAR(I, Dir, struct IPerlDir *)
829PERLVAR(I, Sock, struct IPerlSock *)
830PERLVAR(I, Proc, struct IPerlProc *)
76e3520e 831#endif
1d7c1841 832
115ff745
NC
833PERLVAR(I, ptr_table, PTR_TBL_t *)
834PERLVARI(I, beginav_save, AV *, NULL) /* save BEGIN{}s when compiling */
f180df80 835
115ff745 836PERLVAR(I, body_arenas, void *) /* pointer to list of body-arenas */
93e68bfb 837
d95e864f 838
1fcf4c12 839#if defined(USE_ITHREADS)
115ff745 840PERLVAR(I, regex_pad, SV **) /* Shortcut into the array of
1604cfb0 841 regex_padav */
115ff745 842PERLVAR(I, regex_padav, AV *) /* All regex objects, indexed via the
1604cfb0
MS
843 values in op_pmoffset of pmop.
844 Entry 0 is an SV whose PV is a
845 "packed" list of IVs listing
846 the now-free slots in the array */
d4d03940
FC
847PERLVAR(I, stashpad, HV **) /* for CopSTASH */
848PERLVARI(I, stashpadmax, PADOFFSET, 64)
849PERLVARI(I, stashpadix, PADOFFSET, 0)
1fcf4c12
AB
850#endif
851
ea68fd67 852#ifdef USE_REENTRANT_API
115ff745 853PERLVAR(I, reentrant_buffer, REENTR *) /* here we store the _r buffers */
f5a82810
JH
854#endif
855
115ff745
NC
856PERLVAR(I, custom_op_names, HV *) /* Names of user defined ops */
857PERLVAR(I, custom_op_descs, HV *) /* Descriptions of user defined ops */
19e8ce8e 858
a1ea730d 859#ifdef PERLIO_LAYERS
115ff745
NC
860PERLVARI(I, perlio, PerlIOl *, NULL)
861PERLVARI(I, known_layers, PerlIO_list_t *, NULL)
862PERLVARI(I, def_layerlist, PerlIO_list_t *, NULL)
a1ea730d
NIS
863#endif
864
115ff745
NC
865PERLVARI(I, checkav_save, AV *, NULL) /* save CHECK{}s when compiling */
866PERLVARI(I, unitcheckav_save, AV *, NULL)
1604cfb0 867 /* save UNITCHECK{}s when compiling */
ece599bd 868
115ff745 869PERLVARI(I, clocktick, long, 0) /* this many times() ticks in a second */
5311654c 870
15a5279a 871/* Hooks to shared SVs and locks. */
115ff745
NC
872PERLVARI(I, sharehook, share_proc_t, Perl_sv_nosharing)
873PERLVARI(I, lockhook, share_proc_t, Perl_sv_nosharing)
238965b4
KW
874
875GCC_DIAG_IGNORE(-Wdeprecated-declarations)
d0647d4e
NC
876#ifdef NO_MATHOMS
877# define PERL_UNLOCK_HOOK Perl_sv_nosharing
878#else
879/* This reference ensures that the mathoms are linked with perl */
880# define PERL_UNLOCK_HOOK Perl_sv_nounlocking
881#endif
115ff745 882PERLVARI(I, unlockhook, share_proc_t, PERL_UNLOCK_HOOK)
d0647d4e 883
238965b4
KW
884GCC_DIAG_RESTORE
885
115ff745 886PERLVARI(I, threadhook, thrhook_proc_t, Perl_nothreadhook)
15a5279a 887
9e08d3a4 888/* Can shared object be destroyed */
115ff745 889PERLVARI(I, destroyhook, destroyable_proc_t, Perl_sv_destroyable)
9e08d3a4 890
01d65469 891#ifndef PERL_MICRO
115ff745 892PERLVARI(I, signalhook, despatch_signals_proc_t, Perl_despatch_signals)
01d65469 893#endif
92f022bb 894
115ff745 895PERLVARI(I, isarev, HV *, NULL) /* Reverse map of @ISA dependencies */
f16dd614 896
9e08d3a4
NC
897/* Register of known Method Resolution Orders.
898 What this actually points to is an implementation detail (it may change to
899 a structure incorporating a reference count - use mro_get_from_name to
900 retrieve a C<struct mro_alg *> */
115ff745 901PERLVAR(I, registered_mros, HV *)
9e08d3a4
NC
902
903/* Compile-time block start/end hooks */
115ff745 904PERLVAR(I, blockhooks, AV *)
9e08d3a4 905
115ff745 906PERLVAR(I, custom_ops, HV *) /* custom op registrations */
9e08d3a4 907
19bc2726
DM
908PERLVAR(I, Xpv, XPV *) /* (unused) held temporary value */
909
910/* name of the scopes we've ENTERed. Only used with -DDEBUGGING, but needs to be
911 present always, as -DDEBUGGING must be binary compatible with non. */
912PERLVARI(I, scopestack_name, const char * *, NULL)
913
914PERLVAR(I, debug_pad, struct perl_debug_pad) /* always needed because of the re extension */
915
d67594ff
FC
916/* Hook for File::Glob */
917PERLVARI(I, globhook, globhook_t, NULL)
918
0f60372e 919#if defined(MULTIPLICITY)
436227c7 920/* The last unconditional member of the interpreter structure when 5.18.0 was
ffee3ff6
NC
921 released. The offset of the end of this is baked into a global variable in
922 any shared perl library which will allow a sanity test in future perl
923 releases. */
0f60372e
KW
924# define PERL_LAST_5_18_0_INTERP_MEMBER Iglobhook
925#endif
ffee3ff6 926
f16dd614 927#ifdef PERL_IMPLICIT_CONTEXT
115ff745 928PERLVARI(I, my_cxt_list, void **, NULL) /* per-module array of MY_CXT pointers */
817b0f24 929PERLVARI(I, my_cxt_size, int, 0) /* size of PL_my_cxt_list */
f16dd614
DM
930#endif
931
0419d978 932#if defined(PERL_IMPLICIT_CONTEXT) || defined(PERL_DEBUG_READONLY_COW)
5ca5a628 933/* For use with the memory debugging code in util.c. This is used only in
0419d978
AC
934 * DEBUGGING builds (as long as the relevant structure is defined), but
935 * defining it in non-debug builds too means that we retain binary
936 * compatibility between otherwise-compatible plain and debug builds. */
115ff745 937PERLVAR(I, memory_debug_header, struct perl_memory_debug_header)
0419d978 938#endif
7cb608b5 939
ba6d381e
NC
940#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
941/* File descriptor to talk to the child which dumps scalars. */
115ff745 942PERLVARI(I, dumper_fd, int, -1)
ba6d381e
NC
943#endif
944
ba6d381e 945
d7a2c63c 946#ifdef DEBUG_LEAKING_SCALARS
115ff745 947PERLVARI(I, sv_serial, U32, 0) /* SV serial number, used in sv.c */
d7a2c63c
MHM
948#endif
949
a38ab475
RZ
950PERLVARA(I, sv_consts, SV_CONSTS_COUNT, SV*) /* constant SVs with precomputed hash value */
951
75d476e2
SM
952#ifdef PERL_TRACE_OPS
953PERLVARA(I, op_exec_cnt, OP_max+2, UV) /* Counts of executed OPs of the given type.
954 If PERL_TRACE_OPS is enabled, we'll dump
955 a summary count of all ops executed in the
956 program at perl_destruct time. For
957 profiling/debugging only. Works only if
958 DEBUGGING is enabled, too. */
959#endif
960
3be8f094
TC
961PERLVAR(I, random_state, PL_RANDOM_STATE_TYPE)
962
eecd4d11 963PERLVARI(I, dump_re_max_len, STRLEN, 60)
2bfbbbaf 964
f26b33bd
TC
965/* For internal uses of randomness, this ensures the sequence of
966 * random numbers returned by rand() isn't modified by perl's internal
967 * use of randomness.
968 * This is important if the user has called srand() with a seed.
969 */
970
971PERLVAR(I, internal_random_state, PL_RANDOM_STATE_TYPE)
972
8c90d3a9
KW
973PERLVARA(I, TR_SPECIAL_HANDLING_UTF8, UTF8_MAXBYTES, char)
974
a8def808
KW
975PERLVAR(I, AboveLatin1, SV *)
976PERLVAR(I, Assigned_invlist, SV *)
977PERLVAR(I, GCB_invlist, SV *)
978PERLVAR(I, HasMultiCharFold, SV *)
979PERLVAR(I, InMultiCharFold, SV *)
980PERLVAR(I, Latin1, SV *)
981PERLVAR(I, LB_invlist, SV *)
982PERLVAR(I, SB_invlist, SV *)
983PERLVAR(I, SCX_invlist, SV *)
984PERLVAR(I, UpperLatin1, SV *) /* Code points 128 - 255 */
985
986/* List of characters that participate in any fold defined by Unicode */
987PERLVAR(I, in_some_fold, SV *)
988
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989/* Everything that folds to a given character, for case insensitivity regex
990 * matching */
991PERLVAR(I, utf8_foldclosures, SV *)
992
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993PERLVAR(I, utf8_idcont, SV *)
994PERLVAR(I, utf8_idstart, SV *)
995PERLVAR(I, utf8_perl_idcont, SV *)
996PERLVAR(I, utf8_perl_idstart, SV *)
997PERLVAR(I, utf8_xidcont, SV *)
998PERLVAR(I, utf8_xidstart, SV *)
999PERLVAR(I, WB_invlist, SV *)
1000PERLVARA(I, XPosix_ptrs, POSIX_CC_COUNT, SV *)
1001PERLVARA(I, Posix_ptrs, POSIX_CC_COUNT, SV *)
1002PERLVAR(I, utf8_toupper, SV *)
1003PERLVAR(I, utf8_totitle, SV *)
1004PERLVAR(I, utf8_tolower, SV *)
1005PERLVAR(I, utf8_tofold, SV *)
1006PERLVAR(I, utf8_tosimplefold, SV *)
1007PERLVAR(I, utf8_charname_begin, SV *)
1008PERLVAR(I, utf8_charname_continue, SV *)
1009PERLVAR(I, utf8_mark, SV *)
1010PERLVARI(I, InBitmap, SV *, NULL)
1011PERLVAR(I, CCC_non0_non230, SV *)
1012PERLVAR(I, Private_Use, SV *)
1013
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KW
1014#ifdef HAS_MBRLEN
1015PERLVAR(I, mbrlen_ps, mbstate_t)
1016#endif
5a6637f0
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1017#ifdef HAS_MBRTOWC
1018PERLVAR(I, mbrtowc_ps, mbstate_t)
1019#endif
1020#ifdef HAS_WCRTOMB
1021PERLVAR(I, wcrtomb_ps, mbstate_t)
1022#endif
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KW
1023#ifdef PERL_MEM_LOG
1024/* Enough space for the reserved byte, 1 for a potential leading 0, then enough
1025 * for the longest representable integer plus an extra, the 3 flag characters,
1026 * and NUL */
1027PERLVARA(I, mem_log, 1 + 1 + TYPE_DIGITS(UV) + 1 + 3 + 1, char);
1028#endif
d2c9cb53 1029
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NC
1030/* If you are adding a U8 or U16, check to see if there are 'Space' comments
1031 * above on where there are gaps which currently will be structure padding. */
d95e864f
NC
1032
1033/* Within a stable branch, new variables must be added to the very end, before
1034 * this comment, for binary compatibility (the offsets of the old members must
1035 * not change).
b83cd129 1036 * (Don't forget to add your variable also to perl_clone()!)
b83cd129 1037 */