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Revert "Move PL_check to the interp vars to fix threading issues"
[perl5.git] / scope.c
CommitLineData
a0d0e21e 1/* scope.c
79072805 2 *
1129b882
NC
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
79072805
LW
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 *
a0d0e21e
LW
9 */
10
11/*
4ac71550
TC
12 * For the fashion of Minas Tirith was such that it was built on seven
13 * levels...
14 *
15 * [p.751 of _The Lord of the Rings_, V/i: "Minas Tirith"]
79072805
LW
16 */
17
ddfa107c 18/* This file contains functions to manipulate several of Perl's stacks;
166f8a29
DM
19 * in particular it contains code to push various types of things onto
20 * the savestack, then to pop them off and perform the correct restorative
21 * action for each one. This corresponds to the cleanup Perl does at
22 * each scope exit.
23 */
24
79072805 25#include "EXTERN.h"
864dbfa3 26#define PERL_IN_SCOPE_C
79072805 27#include "perl.h"
9f601cf3 28#include "feature.h"
79072805 29
a0d0e21e 30SV**
fc16c392 31Perl_stack_grow(pTHX_ SV **sp, SV **p, SSize_t n)
a0d0e21e 32{
402d079e
DM
33 SSize_t extra;
34 SSize_t current = (p - PL_stack_base);
35
7918f24d
NC
36 PERL_ARGS_ASSERT_STACK_GROW;
37
402d079e 38 if (UNLIKELY(n < 0))
6768377c 39 Perl_croak(aTHX_
147e3846 40 "panic: stack_grow() negative count (%" IVdf ")", (IV)n);
6768377c 41
3280af22 42 PL_stack_sp = sp;
402d079e
DM
43 extra =
44#ifdef STRESS_REALLOC
45 1;
2ce36478 46#else
402d079e 47 128;
2ce36478 48#endif
402d079e
DM
49 /* If the total might wrap, panic instead. This is really testing
50 * that (current + n + extra < SSize_t_MAX), but done in a way that
51 * can't wrap */
52 if (UNLIKELY( current > SSize_t_MAX - extra
53 || current + extra > SSize_t_MAX - n
54 ))
55 /* diag_listed_as: Out of memory during %s extend */
56 Perl_croak(aTHX_ "Out of memory during stack extend");
57
58 av_extend(PL_curstack, current + n + extra);
87058c31
DM
59#ifdef DEBUGGING
60 PL_curstackinfo->si_stack_hwm = current + n + extra;
61#endif
62
3280af22 63 return PL_stack_sp;
a0d0e21e
LW
64}
65
2ce36478
SM
66#ifndef STRESS_REALLOC
67#define GROW(old) ((old) * 3 / 2)
68#else
69#define GROW(old) ((old) + 1)
70#endif
71
e336de0d 72PERL_SI *
864dbfa3 73Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d
GS
74{
75 PERL_SI *si;
a02a5408 76 Newx(si, 1, PERL_SI);
e336de0d
GS
77 si->si_stack = newAV();
78 AvREAL_off(si->si_stack);
79 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 80 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
81 AvFILLp(si->si_stack) = 0;
82 si->si_prev = 0;
83 si->si_next = 0;
84 si->si_cxmax = cxitems - 1;
85 si->si_cxix = -1;
5b6f7443 86 si->si_cxsubix = -1;
e788e7d3 87 si->si_type = PERLSI_UNDEF;
a02a5408 88 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
490576d1 89 /* Without any kind of initialising CX_PUSHSUBST()
9965345d 90 * in pp_subst() will read uninitialised heap. */
7e337ee0 91 PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
92 return si;
93}
94
79072805 95I32
864dbfa3 96Perl_cxinc(pTHX)
79072805 97{
a3b680e6 98 const IV old_max = cxstack_max;
00195859
HS
99 const IV new_max = GROW(cxstack_max);
100 Renew(cxstack, new_max + 1, PERL_CONTEXT);
101 cxstack_max = new_max;
9965345d
JH
102 /* Without any kind of initialising deep enough recursion
103 * will end up reading uninitialised PERL_CONTEXTs. */
00195859 104 PoisonNew(cxstack + old_max + 1, new_max - old_max, PERL_CONTEXT);
79072805
LW
105 return cxstack_ix + 1;
106}
107
79072805 108void
864dbfa3 109Perl_push_scope(pTHX)
79072805 110{
5d9574c1 111 if (UNLIKELY(PL_scopestack_ix == PL_scopestack_max)) {
00195859
HS
112 const IV new_max = GROW(PL_scopestack_max);
113 Renew(PL_scopestack, new_max, I32);
d343c3ef 114#ifdef DEBUGGING
00195859 115 Renew(PL_scopestack_name, new_max, const char*);
520bb150 116#endif
00195859 117 PL_scopestack_max = new_max;
79072805 118 }
d343c3ef
GG
119#ifdef DEBUGGING
120 PL_scopestack_name[PL_scopestack_ix] = "unknown";
121#endif
3280af22 122 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
123
124}
125
126void
864dbfa3 127Perl_pop_scope(pTHX)
79072805 128{
35a4481c 129 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 130 LEAVE_SCOPE(oldsave);
79072805
LW
131}
132
ba5248fc 133I32 *
864dbfa3 134Perl_markstack_grow(pTHX)
a0d0e21e 135{
35a4481c
AL
136 const I32 oldmax = PL_markstack_max - PL_markstack;
137 const I32 newmax = GROW(oldmax);
a0d0e21e 138
3280af22 139 Renew(PL_markstack, newmax, I32);
3280af22 140 PL_markstack_max = PL_markstack + newmax;
ba5248fc 141 PL_markstack_ptr = PL_markstack + oldmax;
30773234 142 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log,
147e3846 143 "MARK grow %p %" IVdf " by %" IVdf "\n",
30773234 144 PL_markstack_ptr, (IV)*PL_markstack_ptr, (IV)oldmax)));
ba5248fc 145 return PL_markstack_ptr;
a0d0e21e
LW
146}
147
148void
864dbfa3 149Perl_savestack_grow(pTHX)
79072805 150{
00195859 151 IV new_max;
49706441 152#ifdef STRESS_REALLOC
00195859 153 new_max = PL_savestack_max + SS_MAXPUSH;
49706441 154#else
00195859 155 new_max = GROW(PL_savestack_max);
49706441 156#endif
3caf0269
DM
157 /* Note that we allocate SS_MAXPUSH slots higher than ss_max
158 * so that SS_ADD_END(), SSGROW() etc can do a simper check */
00195859
HS
159 Renew(PL_savestack, new_max + SS_MAXPUSH, ANY);
160 PL_savestack_max = new_max;
79072805
LW
161}
162
4b3c1a47
AE
163void
164Perl_savestack_grow_cnt(pTHX_ I32 need)
165{
00195859 166 const IV new_max = PL_savestack_ix + need;
3caf0269
DM
167 /* Note that we allocate SS_MAXPUSH slots higher than ss_max
168 * so that SS_ADD_END(), SSGROW() etc can do a simper check */
00195859
HS
169 Renew(PL_savestack, new_max + SS_MAXPUSH, ANY);
170 PL_savestack_max = new_max;
4b3c1a47
AE
171}
172
2ce36478
SM
173#undef GROW
174
a953aca5
DD
175/* The original function was called Perl_tmps_grow and was removed from public
176 API, Perl_tmps_grow_p is the replacement and it used in public macros but
177 isn't public itself.
178
179 Perl_tmps_grow_p takes a proposed ix. A proposed ix is PL_tmps_ix + extend_by,
180 where the result of (PL_tmps_ix + extend_by) is >= PL_tmps_max
181 Upon return, PL_tmps_stack[ix] will be a valid address. For machine code
182 optimization and register usage reasons, the proposed ix passed into
183 tmps_grow is returned to the caller which the caller can then use to write
184 an SV * to PL_tmps_stack[ix]. If the caller was using tmps_grow in
185 pre-extend mode (EXTEND_MORTAL macro), then it ignores the return value of
186 tmps_grow. Note, tmps_grow DOES NOT write ix to PL_tmps_ix, the caller
187 must assign ix or ret val of tmps_grow to PL_temps_ix themselves if that is
188 appropriate. The assignment to PL_temps_ix can happen before or after
189 tmps_grow call since tmps_grow doesn't look at PL_tmps_ix.
190 */
191
192SSize_t
193Perl_tmps_grow_p(pTHX_ SSize_t ix)
677b06e3 194{
a953aca5 195 SSize_t extend_to = ix;
677b06e3 196#ifndef STRESS_REALLOC
a953aca5
DD
197 if (ix - PL_tmps_max < 128)
198 extend_to += (PL_tmps_max < 512) ? 128 : 512;
677b06e3 199#endif
00195859 200 Renew(PL_tmps_stack, extend_to + 1, SV*);
a953aca5 201 PL_tmps_max = extend_to + 1;
a953aca5 202 return ix;
677b06e3
GS
203}
204
205
206void
864dbfa3 207Perl_free_tmps(pTHX)
79072805
LW
208{
209 /* XXX should tmps_floor live in cxstack? */
e8eb279c 210 const SSize_t myfloor = PL_tmps_floor;
3280af22 211 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
22ade07d 212 SV* const sv = PL_tmps_stack[PL_tmps_ix--];
72581b5b
VP
213#ifdef PERL_POISON
214 PoisonWith(PL_tmps_stack + PL_tmps_ix + 1, 1, SV *, 0xAB);
22ade07d 215#endif
520275ba 216 if (LIKELY(sv)) {
463ee0b2 217 SvTEMP_off(sv);
4a9a56a7 218 SvREFCNT_dec_NN(sv); /* note, can modify tmps_ix!!! */
463ee0b2 219 }
79072805
LW
220 }
221}
222
76e3520e 223STATIC SV *
af7df257 224S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 225{
75d34a09 226 SV * osv;
eb578fdb 227 SV *sv;
79072805 228
7918f24d
NC
229 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
230
75d34a09 231 osv = *sptr;
3c84a230
DM
232 if (flags & SAVEf_KEEPOLDELEM)
233 sv = osv;
234 else {
235 sv = (*sptr = newSV(0));
236 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv))
237 mg_localize(osv, sv, cBOOL(flags & SAVEf_SETMAGIC));
79072805 238 }
75d34a09 239
79072805
LW
240 return sv;
241}
242
dfcd3de5
NC
243void
244Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3 245{
a3444cc5
DM
246 dSS_ADD;
247 SS_ADD_PTR(ptr1);
248 SS_ADD_PTR(ptr2);
249 SS_ADD_UV(type);
250 SS_ADD_END(3);
e22024d3
NC
251}
252
7a4c00b4 253SV *
864dbfa3 254Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 255{
13c59d41 256 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
257
258 PERL_ARGS_ASSERT_SAVE_SCALAR;
259
13c59d41 260 if (UNLIKELY(SvGMAGICAL(*sptr))) {
b492a59e 261 PL_localizing = 1;
13c59d41 262 (void)mg_get(*sptr);
b492a59e
DM
263 PL_localizing = 0;
264 }
13c59d41
MH
265 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
266 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
267}
268
f4dd75d9 269/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
270 * restore a global SV to its prior contents, freeing new value. */
271void
864dbfa3 272Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 273{
7918f24d
NC
274 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
275
e22024d3 276 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
277}
278
f4dd75d9
GS
279/* Like save_pptr(), but also Safefree()s the new value if it is different
280 * from the old one. Can be used to restore a global char* to its prior
281 * contents, freeing new value. */
282void
283Perl_save_generic_pvref(pTHX_ char **str)
284{
7918f24d
NC
285 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
286
e22024d3 287 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
288}
289
05ec9bb3
NIS
290/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
291 * Can be used to restore a shared global char* to its prior
292 * contents, freeing new value. */
293void
294Perl_save_shared_pvref(pTHX_ char **str)
295{
7918f24d
NC
296 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
297
e22024d3 298 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
299}
300
14f338dc
DM
301/* set the SvFLAGS specified by mask to the values in val */
302
303void
304Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
305{
a3444cc5 306 dSS_ADD;
7918f24d
NC
307
308 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
309
a3444cc5
DM
310 SS_ADD_PTR(sv);
311 SS_ADD_INT(mask);
312 SS_ADD_INT(val);
313 SS_ADD_UV(SAVEt_SET_SVFLAGS);
314 SS_ADD_END(4);
14f338dc
DM
315}
316
364bbfa4 317/*
d4f04357
KW
318
319=head1 GV Functions
320
364bbfa4
TC
321=for apidoc save_gp
322
323Saves the current GP of gv on the save stack to be restored on scope exit.
324
325If empty is true, replace the GP with a new GP.
326
327If empty is false, mark gv with GVf_INTRO so the next reference
328assigned is localized, which is how C< local *foo = $someref; > works.
329
330=cut
331*/
332
79072805 333void
864dbfa3 334Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 335{
7918f24d
NC
336 PERL_ARGS_ASSERT_SAVE_GP;
337
6881372e
FC
338 /* XXX For now, we just upgrade any coderef in the stash to a full GV
339 during localisation. Maybe at some point we could make localis-
340 ation work without needing the upgrade. (In which case our
341 callers should probably call a different function, not save_gp.)
342 */
343 if (!isGV(gv)) {
344 assert(isGV_or_RVCV(gv));
345 (void)CvGV(SvRV((SV *)gv)); /* CvGV does the upgrade */
346 assert(isGV(gv));
347 }
348
10507e11 349 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 350
5f05dabc 351 if (empty) {
12816592 352 GP *gp = Perl_newGP(aTHX_ gv);
959f7ad7 353 HV * const stash = GvSTASH(gv);
3d460042
FC
354 bool isa_changed = 0;
355
356 if (stash && HvENAME(stash)) {
b59bf0b2 357 if (memEQs(GvNAME(gv), GvNAMELEN(gv), "ISA"))
3d460042
FC
358 isa_changed = TRUE;
359 else if (GvCVu(gv))
360 /* taking a method out of circulation ("local")*/
361 mro_method_changed_in(stash);
362 }
146174a9
CB
363 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
364 gp->gp_io = newIO();
365 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
366 }
c43ae56f 367 GvGP_set(gv,gp);
3d460042 368 if (isa_changed) mro_isa_changed_in(stash);
5f05dabc
PP
369 }
370 else {
44a8e56a 371 gp_ref(GvGP(gv));
5f05dabc
PP
372 GvINTRO_on(gv);
373 }
79072805 374}
79072805 375
79072805 376AV *
864dbfa3 377Perl_save_ary(pTHX_ GV *gv)
79072805 378{
901017d6 379 AV * const oav = GvAVn(gv);
67a38de0 380 AV *av;
fb73857a 381
7918f24d
NC
382 PERL_ARGS_ASSERT_SAVE_ARY;
383
5d9574c1 384 if (UNLIKELY(!AvREAL(oav) && AvREIFY(oav)))
67a38de0 385 av_reify(oav);
01433346 386 save_pushptrptr(SvREFCNT_inc_simple_NN(gv), oav, SAVEt_AV);
79072805 387
4608196e 388 GvAV(gv) = NULL;
fb73857a 389 av = GvAVn(gv);
5d9574c1 390 if (UNLIKELY(SvMAGIC(oav)))
9711599e 391 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 392 return av;
79072805
LW
393}
394
395HV *
864dbfa3 396Perl_save_hash(pTHX_ GV *gv)
79072805 397{
fb73857a
PP
398 HV *ohv, *hv;
399
7918f24d
NC
400 PERL_ARGS_ASSERT_SAVE_HASH;
401
01433346
FC
402 save_pushptrptr(
403 SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV
404 );
79072805 405
4608196e 406 GvHV(gv) = NULL;
fb73857a 407 hv = GvHVn(gv);
5d9574c1 408 if (UNLIKELY(SvMAGIC(ohv)))
9711599e 409 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 410 return hv;
79072805
LW
411}
412
413void
5aaab254 414Perl_save_item(pTHX_ SV *item)
79072805 415{
eb578fdb 416 SV * const sv = newSVsv(item);
79072805 417
7918f24d
NC
418 PERL_ARGS_ASSERT_SAVE_ITEM;
419
e22024d3
NC
420 save_pushptrptr(item, /* remember the pointer */
421 sv, /* remember the value */
422 SAVEt_ITEM);
79072805
LW
423}
424
425void
1409bc06 426Perl_save_bool(pTHX_ bool *boolp)
79072805 427{
a3444cc5 428 dSS_ADD;
7918f24d 429
1409bc06 430 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 431
a3444cc5
DM
432 SS_ADD_PTR(boolp);
433 SS_ADD_UV(SAVEt_BOOL | (*boolp << 8));
434 SS_ADD_END(2);
1409bc06
NC
435}
436
7623d426
NC
437void
438Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06 439{
a3444cc5
DM
440 dSS_ADD;
441
442 SS_ADD_INT(i);
443 SS_ADD_PTR(ptr);
444 SS_ADD_UV(type);
445 SS_ADD_END(3);
79072805
LW
446}
447
448void
1409bc06 449Perl_save_int(pTHX_ int *intp)
9febdf04 450{
d172696c 451 const int i = *intp;
9b139d09 452 UV type = ((UV)((UV)i << SAVE_TIGHT_SHIFT) | SAVEt_INT_SMALL);
d172696c
DM
453 int size = 2;
454 dSS_ADD;
7918f24d 455
1409bc06 456 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 457
5d9574c1 458 if (UNLIKELY((int)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
459 SS_ADD_INT(i);
460 type = SAVEt_INT;
461 size++;
462 }
463 SS_ADD_PTR(intp);
464 SS_ADD_UV(type);
465 SS_ADD_END(size);
9febdf04
RH
466}
467
468void
58188858
RGS
469Perl_save_I8(pTHX_ I8 *bytep)
470{
a3444cc5 471 dSS_ADD;
7918f24d
NC
472
473 PERL_ARGS_ASSERT_SAVE_I8;
474
a3444cc5
DM
475 SS_ADD_PTR(bytep);
476 SS_ADD_UV(SAVEt_I8 | ((UV)*bytep << 8));
477 SS_ADD_END(2);
58188858
RGS
478}
479
480void
87a84751
JH
481Perl_save_I16(pTHX_ I16 *intp)
482{
a3444cc5 483 dSS_ADD;
7918f24d
NC
484
485 PERL_ARGS_ASSERT_SAVE_I16;
486
a3444cc5
DM
487 SS_ADD_PTR(intp);
488 SS_ADD_UV(SAVEt_I16 | ((UV)*intp << 8));
489 SS_ADD_END(2);
87a84751
JH
490}
491
492void
864dbfa3 493Perl_save_I32(pTHX_ I32 *intp)
79072805 494{
d172696c 495 const I32 i = *intp;
9b139d09 496 UV type = ((I32)((U32)i << SAVE_TIGHT_SHIFT) | SAVEt_I32_SMALL);
d172696c
DM
497 int size = 2;
498 dSS_ADD;
7918f24d
NC
499
500 PERL_ARGS_ASSERT_SAVE_I32;
501
5d9574c1 502 if (UNLIKELY((I32)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
503 SS_ADD_INT(i);
504 type = SAVEt_I32;
505 size++;
506 }
507 SS_ADD_PTR(intp);
508 SS_ADD_UV(type);
509 SS_ADD_END(size);
79072805
LW
510}
511
e8eb279c
FC
512void
513Perl_save_strlen(pTHX_ STRLEN *ptr)
514{
e8eb279c
FC
515 dSS_ADD;
516
517 PERL_ARGS_ASSERT_SAVE_STRLEN;
518
519 SS_ADD_IV(*ptr);
520 SS_ADD_PTR(ptr);
521 SS_ADD_UV(SAVEt_STRLEN);
522 SS_ADD_END(3);
523}
524
f8c11501
FC
525void
526Perl_save_iv(pTHX_ IV *ivp)
527{
528 PERL_ARGS_ASSERT_SAVE_IV;
529
530 SSCHECK(3);
531 SSPUSHIV(*ivp);
532 SSPUSHPTR(ivp);
533 SSPUSHUV(SAVEt_IV);
534}
535
85e6fe83
LW
536/* Cannot use save_sptr() to store a char* since the SV** cast will
537 * force word-alignment and we'll miss the pointer.
538 */
539void
864dbfa3 540Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 541{
7918f24d
NC
542 PERL_ARGS_ASSERT_SAVE_PPTR;
543
e22024d3 544 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
545}
546
79072805 547void
146174a9
CB
548Perl_save_vptr(pTHX_ void *ptr)
549{
7918f24d
NC
550 PERL_ARGS_ASSERT_SAVE_VPTR;
551
e22024d3 552 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
553}
554
555void
864dbfa3 556Perl_save_sptr(pTHX_ SV **sptr)
79072805 557{
7918f24d
NC
558 PERL_ARGS_ASSERT_SAVE_SPTR;
559
e22024d3 560 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
561}
562
c3564e5c 563void
09edbca0 564Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 565{
a3444cc5
DM
566 dSS_ADD;
567
f3548bdc 568 ASSERT_CURPAD_ACTIVE("save_padsv");
a3444cc5
DM
569 SS_ADD_PTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
570 SS_ADD_PTR(PL_comppad);
03dba561 571 SS_ADD_UV((UV)off);
a3444cc5
DM
572 SS_ADD_UV(SAVEt_PADSV_AND_MORTALIZE);
573 SS_ADD_END(4);
c3564e5c
GS
574}
575
79072805 576void
864dbfa3 577Perl_save_hptr(pTHX_ HV **hptr)
79072805 578{
7918f24d
NC
579 PERL_ARGS_ASSERT_SAVE_HPTR;
580
e22024d3 581 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
582}
583
584void
864dbfa3 585Perl_save_aptr(pTHX_ AV **aptr)
79072805 586{
7918f24d
NC
587 PERL_ARGS_ASSERT_SAVE_APTR;
588
e22024d3 589 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
590}
591
592void
2fd8beea 593Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 594{
a3444cc5
DM
595 dSS_ADD;
596 SS_ADD_PTR(ptr);
597 SS_ADD_UV(type);
598 SS_ADD_END(2);
8990e307
LW
599}
600
601void
864dbfa3 602Perl_save_clearsv(pTHX_ SV **svp)
8990e307 603{
cdcdfc56
NC
604 const UV offset = svp - PL_curpad;
605 const UV offset_shifted = offset << SAVE_TIGHT_SHIFT;
7918f24d
NC
606
607 PERL_ARGS_ASSERT_SAVE_CLEARSV;
608
f3548bdc 609 ASSERT_CURPAD_ACTIVE("save_clearsv");
623e28c6 610 SvPADSTALE_off(*svp); /* mark lexical as active */
5d9574c1 611 if (UNLIKELY((offset_shifted >> SAVE_TIGHT_SHIFT) != offset)) {
147e3846 612 Perl_croak(aTHX_ "panic: pad offset %" UVuf " out of range (%p-%p)",
cdcdfc56 613 offset, svp, PL_curpad);
a3444cc5 614 }
cdcdfc56 615
a3444cc5
DM
616 {
617 dSS_ADD;
618 SS_ADD_UV(offset_shifted | SAVEt_CLEARSV);
619 SS_ADD_END(1);
620 }
8990e307
LW
621}
622
623void
864dbfa3 624Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 625{
7918f24d
NC
626 PERL_ARGS_ASSERT_SAVE_DELETE;
627
85a721ca 628 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
629}
630
631void
af097752
VP
632Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
633{
634 STRLEN len;
635 I32 klen;
636 const char *key;
637
638 PERL_ARGS_ASSERT_SAVE_HDELETE;
639
640 key = SvPV_const(keysv, len);
641 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
642 SvREFCNT_inc_simple_void_NN(hv);
643 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
644}
645
646void
c70927a6 647Perl_save_adelete(pTHX_ AV *av, SSize_t key)
c68ec7a9 648{
c70927a6 649 dSS_ADD;
c68ec7a9
VP
650
651 PERL_ARGS_ASSERT_SAVE_ADELETE;
652
653 SvREFCNT_inc_void(av);
c70927a6
FC
654 SS_ADD_UV(key);
655 SS_ADD_PTR(av);
656 SS_ADD_IV(SAVEt_ADELETE);
657 SS_ADD_END(3);
c68ec7a9
VP
658}
659
660void
12ab1f58
JH
661Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
662{
a3444cc5 663 dSS_ADD;
7918f24d
NC
664 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
665
a3444cc5
DM
666 SS_ADD_DPTR(f);
667 SS_ADD_PTR(p);
668 SS_ADD_UV(SAVEt_DESTRUCTOR);
669 SS_ADD_END(3);
12ab1f58
JH
670}
671
672void
146174a9
CB
673Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
674{
a3444cc5
DM
675 dSS_ADD;
676
677 SS_ADD_DXPTR(f);
678 SS_ADD_PTR(p);
679 SS_ADD_UV(SAVEt_DESTRUCTOR_X);
680 SS_ADD_END(3);
146174a9
CB
681}
682
683void
da8315f8
NC
684Perl_save_hints(pTHX)
685{
20439bc7 686 COPHH *save_cophh = cophh_copy(CopHINTHASH_get(&PL_compiling));
da8315f8 687 if (PL_hints & HINT_LOCALIZE_HH) {
52c7aca6
FC
688 HV *oldhh = GvHV(PL_hintgv);
689 save_pushptri32ptr(oldhh, PL_hints, save_cophh, SAVEt_HINTS);
690 GvHV(PL_hintgv) = NULL; /* in case copying dies */
691 GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh);
9f601cf3 692 SAVEFEATUREBITS();
be84297e 693 } else {
20439bc7 694 save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS);
da8315f8 695 }
be84297e
NC
696}
697
698static void
699S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
700 const int type)
701{
a3444cc5
DM
702 dSS_ADD;
703 SS_ADD_PTR(ptr1);
704 SS_ADD_INT(i);
705 SS_ADD_PTR(ptr2);
706 SS_ADD_UV(type);
707 SS_ADD_END(4);
da8315f8
NC
708}
709
710void
c70927a6
FC
711Perl_save_aelem_flags(pTHX_ AV *av, SSize_t idx, SV **sptr,
712 const U32 flags)
4e4c362e 713{
20b7effb 714 dSS_ADD;
bfc4de9f 715 SV *sv;
7918f24d 716
91d1c79f 717 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 718
0cbee0a4 719 SvGETMAGIC(*sptr);
c70927a6
FC
720 SS_ADD_PTR(SvREFCNT_inc_simple(av));
721 SS_ADD_IV(idx);
722 SS_ADD_PTR(SvREFCNT_inc(*sptr));
723 SS_ADD_UV(SAVEt_AELEM);
724 SS_ADD_END(4);
1cdc9186
FC
725 /* The array needs to hold a reference count on its new element, so it
726 must be AvREAL. */
5d9574c1 727 if (UNLIKELY(!AvREAL(av) && AvREIFY(av)))
1cdc9186 728 av_reify(av);
91d1c79f 729 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
730 if (flags & SAVEf_KEEPOLDELEM)
731 return;
bfc4de9f
DM
732 sv = *sptr;
733 /* If we're localizing a tied array element, this new sv
734 * won't actually be stored in the array - so it won't get
735 * reaped when the localize ends. Ensure it gets reaped by
736 * mortifying it instead. DAPM */
5d9574c1 737 if (UNLIKELY(SvTIED_mg((const SV *)av, PERL_MAGIC_tied)))
bfc4de9f 738 sv_2mortal(sv);
4e4c362e
GS
739}
740
741void
af7df257 742Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 743{
bfc4de9f 744 SV *sv;
7918f24d 745
af7df257 746 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 747
0cbee0a4 748 SvGETMAGIC(*sptr);
a3444cc5
DM
749 {
750 dSS_ADD;
751 SS_ADD_PTR(SvREFCNT_inc_simple(hv));
752 SS_ADD_PTR(newSVsv(key));
753 SS_ADD_PTR(SvREFCNT_inc(*sptr));
754 SS_ADD_UV(SAVEt_HELEM);
755 SS_ADD_END(4);
756 }
af7df257 757 save_scalar_at(sptr, flags);
75d34a09
VP
758 if (flags & SAVEf_KEEPOLDELEM)
759 return;
bfc4de9f
DM
760 sv = *sptr;
761 /* If we're localizing a tied hash element, this new sv
762 * won't actually be stored in the hash - so it won't get
763 * reaped when the localize ends. Ensure it gets reaped by
764 * mortifying it instead. DAPM */
5d9574c1 765 if (UNLIKELY(SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)))
bfc4de9f 766 sv_2mortal(sv);
4e4c362e
GS
767}
768
2053acbf
NC
769SV*
770Perl_save_svref(pTHX_ SV **sptr)
771{
7918f24d
NC
772 PERL_ARGS_ASSERT_SAVE_SVREF;
773
2053acbf 774 SvGETMAGIC(*sptr);
e22024d3 775 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 776 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
777}
778
2ef9a108
DM
779
780void
781Perl_savetmps(pTHX)
782{
783 dSS_ADD;
784 SS_ADD_IV(PL_tmps_floor);
785 PL_tmps_floor = PL_tmps_ix;
786 SS_ADD_UV(SAVEt_TMPSFLOOR);
787 SS_ADD_END(2);
788}
789
790
455ece5e 791I32
864dbfa3 792Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 793{
eb578fdb
KW
794 const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
795 - (char*)PL_savestack);
1be36ce0
NC
796 const UV elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
797 const UV elems_shifted = elems << SAVE_TIGHT_SHIFT;
455ece5e 798
5d9574c1 799 if (UNLIKELY((elems_shifted >> SAVE_TIGHT_SHIFT) != elems))
93a641ae 800 Perl_croak(aTHX_
147e3846 801 "panic: save_alloc elems %" UVuf " out of range (%" IVdf "-%" IVdf ")",
93a641ae 802 elems, (IV)size, (IV)pad);
1be36ce0
NC
803
804 SSGROW(elems + 1);
455ece5e
AD
805
806 PL_savestack_ix += elems;
1be36ce0 807 SSPUSHUV(SAVEt_ALLOC | elems_shifted);
455ece5e
AD
808 return start;
809}
810
03dba561 811
8c036433 812static const U8 arg_counts[] = {
9a2fefd6
DM
813 0, /* SAVEt_ALLOC */
814 0, /* SAVEt_CLEARPADRANGE */
815 0, /* SAVEt_CLEARSV */
816 0, /* SAVEt_REGCONTEXT */
817 1, /* SAVEt_TMPSFLOOR */
818 1, /* SAVEt_BOOL */
819 1, /* SAVEt_COMPILE_WARNINGS */
820 1, /* SAVEt_COMPPAD */
821 1, /* SAVEt_FREECOPHH */
822 1, /* SAVEt_FREEOP */
823 1, /* SAVEt_FREEPV */
824 1, /* SAVEt_FREESV */
825 1, /* SAVEt_I16 */
826 1, /* SAVEt_I32_SMALL */
827 1, /* SAVEt_I8 */
828 1, /* SAVEt_INT_SMALL */
829 1, /* SAVEt_MORTALIZESV */
830 1, /* SAVEt_NSTAB */
831 1, /* SAVEt_OP */
832 1, /* SAVEt_PARSER */
833 1, /* SAVEt_STACK_POS */
834 1, /* SAVEt_READONLY_OFF */
835 1, /* SAVEt_FREEPADNAME */
836 2, /* SAVEt_AV */
837 2, /* SAVEt_DESTRUCTOR */
838 2, /* SAVEt_DESTRUCTOR_X */
839 2, /* SAVEt_GENERIC_PVREF */
840 2, /* SAVEt_GENERIC_SVREF */
841 2, /* SAVEt_GP */
842 2, /* SAVEt_GVSV */
843 2, /* SAVEt_HINTS */
844 2, /* SAVEt_HPTR */
845 2, /* SAVEt_HV */
846 2, /* SAVEt_I32 */
847 2, /* SAVEt_INT */
848 2, /* SAVEt_ITEM */
849 2, /* SAVEt_IV */
850 2, /* SAVEt_LONG */
851 2, /* SAVEt_PPTR */
852 2, /* SAVEt_SAVESWITCHSTACK */
853 2, /* SAVEt_SHARED_PVREF */
854 2, /* SAVEt_SPTR */
855 2, /* SAVEt_STRLEN */
856 2, /* SAVEt_SV */
857 2, /* SAVEt_SVREF */
858 2, /* SAVEt_VPTR */
859 2, /* SAVEt_ADELETE */
860 2, /* SAVEt_APTR */
861 3, /* SAVEt_HELEM */
862 3, /* SAVEt_PADSV_AND_MORTALIZE*/
863 3, /* SAVEt_SET_SVFLAGS */
864 3, /* SAVEt_GVSLOT */
865 3, /* SAVEt_AELEM */
866 3 /* SAVEt_DELETE */
867};
868
03dba561 869
462e5cf6 870void
864dbfa3 871Perl_leave_scope(pTHX_ I32 base)
79072805 872{
302c0c93 873 /* Localise the effects of the TAINT_NOT inside the loop. */
284167a5 874 bool was = TAINT_get;
79072805 875
5d9574c1 876 if (UNLIKELY(base < -1))
5637ef5b 877 Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base);
1c98cc53
DM
878 DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
879 (long)PL_savestack_ix, (long)base));
3280af22 880 while (PL_savestack_ix > base) {
03dba561
DM
881 UV uv;
882 U8 type;
9a2fefd6 883 ANY *ap; /* arg pointer */
c9728782 884 ANY a0, a1, a2; /* up to 3 args */
03dba561 885
c6ae7647
NC
886 TAINT_NOT;
887
03dba561 888 {
9a2fefd6 889 U8 argcount;
03dba561 890 I32 ix = PL_savestack_ix - 1;
9a2fefd6
DM
891
892 ap = &PL_savestack[ix];
893 uv = ap->any_uv;
03dba561 894 type = (U8)uv & SAVE_MASK;
9a2fefd6
DM
895 argcount = arg_counts[type];
896 PL_savestack_ix = ix - argcount;
897 ap -= argcount;
03dba561
DM
898 }
899
c6bf6a65 900 switch (type) {
79072805 901 case SAVEt_ITEM: /* normal string */
c9728782
DM
902 a0 = ap[0]; a1 = ap[1];
903 sv_replace(a0.any_sv, a1.any_sv);
904 if (UNLIKELY(SvSMAGICAL(a0.any_sv))) {
b492a59e 905 PL_localizing = 2;
c9728782 906 mg_set(a0.any_sv);
b492a59e
DM
907 PL_localizing = 0;
908 }
79072805 909 break;
03dba561
DM
910
911 /* This would be a mathom, but Perl_save_svref() calls a static
912 function, S_save_scalar_at(), so has to stay in this file. */
913 case SAVEt_SVREF: /* scalar reference */
c9728782 914 a0 = ap[0]; a1 = ap[1];
75ebea3c 915 a2.any_svp = a0.any_svp;
c9728782 916 a0.any_sv = NULL; /* what to refcnt_dec */
03dba561
DM
917 goto restore_sv;
918
8aacddc1 919 case SAVEt_SV: /* scalar reference */
c9728782 920 a0 = ap[0]; a1 = ap[1];
75ebea3c 921 a2.any_svp = &GvSV(a0.any_gv);
2053acbf 922 restore_sv:
03dba561 923 {
75ebea3c
DM
924 /* do *a2.any_svp = a1 and free a0 */
925 SV * const sv = *a2.any_svp;
926 *a2.any_svp = a1.any_sv;
2053acbf 927 SvREFCNT_dec(sv);
c9728782
DM
928 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
929 /* mg_set could die, skipping the freeing of a0 and
930 * a1; Ensure that they're always freed in that case */
2baebb98 931 dSS_ADD;
c9728782 932 SS_ADD_PTR(a1.any_sv);
2baebb98 933 SS_ADD_UV(SAVEt_FREESV);
c9728782 934 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
935 SS_ADD_UV(SAVEt_FREESV);
936 SS_ADD_END(4);
b492a59e 937 PL_localizing = 2;
c9728782 938 mg_set(a1.any_sv);
b492a59e 939 PL_localizing = 0;
2baebb98 940 break;
b492a59e 941 }
c9728782
DM
942 SvREFCNT_dec_NN(a1.any_sv);
943 SvREFCNT_dec(a0.any_sv);
2053acbf 944 break;
03dba561 945 }
c9728782 946
8aacddc1 947 case SAVEt_GENERIC_PVREF: /* generic pv */
c9728782
DM
948 a0 = ap[0]; a1 = ap[1];
949 if (*a1.any_pvp != a0.any_pv) {
950 Safefree(*a1.any_pvp);
951 *a1.any_pvp = a0.any_pv;
f4dd75d9
GS
952 }
953 break;
c9728782 954
05ec9bb3 955 case SAVEt_SHARED_PVREF: /* shared pv */
c9728782
DM
956 a0 = ap[0]; a1 = ap[1];
957 if (*a0.any_pvp != a1.any_pv) {
5e54c26f 958#ifdef NETWARE
c9728782 959 PerlMem_free(*a0.any_pvp);
5e54c26f 960#else
c9728782 961 PerlMemShared_free(*a0.any_pvp);
5e54c26f 962#endif
c9728782 963 *a0.any_pvp = a1.any_pv;
05ec9bb3
NIS
964 }
965 break;
c9728782 966
f83b46a0 967 case SAVEt_GVSV: /* scalar slot in GV */
c9728782 968 a0 = ap[0]; a1 = ap[1];
75ebea3c 969 a0.any_svp = &GvSV(a0.any_gv);
f83b46a0 970 goto restore_svp;
c9728782 971
8aacddc1 972 case SAVEt_GENERIC_SVREF: /* generic sv */
c9728782 973 a0 = ap[0]; a1 = ap[1];
f83b46a0 974 restore_svp:
03dba561 975 {
75ebea3c
DM
976 /* do *a0.any_svp = a1 */
977 SV * const sv = *a0.any_svp;
978 *a0.any_svp = a1.any_sv;
f4dd75d9 979 SvREFCNT_dec(sv);
c9728782 980 SvREFCNT_dec(a1.any_sv);
b9d12d37 981 break;
03dba561 982 }
c9728782 983
db9306af 984 case SAVEt_GVSLOT: /* any slot in GV */
03dba561 985 {
9a2fefd6 986 HV * hv;
c9728782
DM
987 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
988 hv = GvSTASH(a0.any_gv);
db9306af 989 if (hv && HvENAME(hv) && (
c9728782 990 (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV)
75ebea3c 991 || (*a1.any_svp && SvTYPE(*a1.any_svp) == SVt_PVCV)
db9306af
FC
992 ))
993 {
75ebea3c
DM
994 if ((char *)a1.any_svp < (char *)GvGP(a0.any_gv)
995 || (char *)a1.any_svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp)
c9728782 996 || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */
db9306af
FC
997 PL_sub_generation++;
998 else mro_method_changed_in(hv);
999 }
75ebea3c
DM
1000 a0.any_svp = a1.any_svp;
1001 a1.any_sv = a2.any_sv;
db9306af 1002 goto restore_svp;
03dba561 1003 }
c9728782 1004
8aacddc1 1005 case SAVEt_AV: /* array reference */
c9728782
DM
1006 a0 = ap[0]; a1 = ap[1];
1007 SvREFCNT_dec(GvAV(a0.any_gv));
1008 GvAV(a0.any_gv) = a1.any_av;
2baebb98 1009 avhv_common:
c9728782
DM
1010 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
1011 /* mg_set might die, so make sure a0 isn't leaked */
2baebb98 1012 dSS_ADD;
c9728782 1013 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
1014 SS_ADD_UV(SAVEt_FREESV);
1015 SS_ADD_END(2);
b492a59e 1016 PL_localizing = 2;
c9728782 1017 mg_set(a1.any_sv);
b492a59e 1018 PL_localizing = 0;
2baebb98 1019 break;
b492a59e 1020 }
c9728782 1021 SvREFCNT_dec_NN(a0.any_sv);
8aacddc1 1022 break;
c9728782 1023
8aacddc1 1024 case SAVEt_HV: /* hash reference */
c9728782
DM
1025 a0 = ap[0]; a1 = ap[1];
1026 SvREFCNT_dec(GvHV(a0.any_gv));
1027 GvHV(a0.any_gv) = a1.any_hv;
2baebb98
DM
1028 goto avhv_common;
1029
994d373a 1030 case SAVEt_INT_SMALL:
c9728782
DM
1031 a0 = ap[0];
1032 *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT);
994d373a 1033 break;
c9728782 1034
79072805 1035 case SAVEt_INT: /* int reference */
c9728782
DM
1036 a0 = ap[0]; a1 = ap[1];
1037 *(int*)a1.any_ptr = (int)a0.any_i32;
79072805 1038 break;
c9728782 1039
e8eb279c 1040 case SAVEt_STRLEN: /* STRLEN/size_t ref */
c9728782
DM
1041 a0 = ap[0]; a1 = ap[1];
1042 *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv;
e8eb279c 1043 break;
c9728782 1044
2ef9a108 1045 case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */
c9728782
DM
1046 a0 = ap[0];
1047 PL_tmps_floor = (SSize_t)a0.any_iv;
2ef9a108 1048 break;
c9728782 1049
9febdf04 1050 case SAVEt_BOOL: /* bool reference */
c9728782
DM
1051 a0 = ap[0];
1052 *(bool*)a0.any_ptr = cBOOL(uv >> 8);
9a9b5ec9
DM
1053#ifdef NO_TAINT_SUPPORT
1054 PERL_UNUSED_VAR(was);
1055#else
c9728782 1056 if (UNLIKELY(a0.any_ptr == &(TAINT_get))) {
b6f93e7a
KW
1057 /* If we don't update <was>, to reflect what was saved on the
1058 * stack for PL_tainted, then we will overwrite this attempt to
1059 * restore it when we exit this routine. Note that this won't
1060 * work if this value was saved in a wider-than necessary type,
1061 * such as I32 */
c9728782 1062 was = *(bool*)a0.any_ptr;
b6f93e7a 1063 }
284167a5 1064#endif
9febdf04 1065 break;
c9728782 1066
89abef21 1067 case SAVEt_I32_SMALL:
c9728782
DM
1068 a0 = ap[0];
1069 *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT);
89abef21 1070 break;
c9728782 1071
79072805 1072 case SAVEt_I32: /* I32 reference */
c9728782 1073 a0 = ap[0]; a1 = ap[1];
3235b7a3 1074#ifdef PERL_DEBUG_READONLY_OPS
c9728782 1075 if (*(I32*)a1.any_ptr != a0.any_i32)
3235b7a3 1076#endif
c9728782 1077 *(I32*)a1.any_ptr = a0.any_i32;
79072805 1078 break;
c9728782 1079
79072805 1080 case SAVEt_SPTR: /* SV* reference */
146174a9 1081 case SAVEt_VPTR: /* random* reference */
85e6fe83 1082 case SAVEt_PPTR: /* char* reference */
79072805 1083 case SAVEt_HPTR: /* HV* reference */
79072805 1084 case SAVEt_APTR: /* AV* reference */
c9728782 1085 a0 = ap[0]; a1 = ap[1];
212a001e 1086 *a1.any_svp= a0.any_sv;
79072805 1087 break;
c9728782 1088
fb73857a 1089 case SAVEt_GP: /* scalar reference */
03dba561
DM
1090 {
1091 HV *hv;
9a2fefd6
DM
1092 bool had_method;
1093
c9728782 1094 a0 = ap[0]; a1 = ap[1];
03dba561 1095 /* possibly taking a method out of circulation */
c9728782
DM
1096 had_method = !!GvCVu(a0.any_gv);
1097 gp_free(a0.any_gv);
1098 GvGP_set(a0.any_gv, (GP*)a1.any_ptr);
1099 if ((hv=GvSTASH(a0.any_gv)) && HvENAME_get(hv)) {
b59bf0b2 1100 if (memEQs(GvNAME(a0.any_gv), GvNAMELEN(a0.any_gv), "ISA"))
03dba561 1101 mro_isa_changed_in(hv);
c9728782 1102 else if (had_method || GvCVu(a0.any_gv))
03dba561 1103 /* putting a method back into circulation ("local")*/
c9728782 1104 gv_method_changed(a0.any_gv);
3d460042 1105 }
c9728782 1106 SvREFCNT_dec_NN(a0.any_gv);
8aacddc1 1107 break;
03dba561 1108 }
c9728782 1109
8990e307 1110 case SAVEt_FREESV:
c9728782
DM
1111 a0 = ap[0];
1112 SvREFCNT_dec(a0.any_sv);
8990e307 1113 break;
c9728782 1114
0f94cb1f 1115 case SAVEt_FREEPADNAME:
c9728782
DM
1116 a0 = ap[0];
1117 PadnameREFCNT_dec((PADNAME *)a0.any_ptr);
0f94cb1f 1118 break;
c9728782 1119
3987a177 1120 case SAVEt_FREECOPHH:
c9728782
DM
1121 a0 = ap[0];
1122 cophh_free((COPHH *)a0.any_ptr);
3987a177 1123 break;
c9728782 1124
26d9b02f 1125 case SAVEt_MORTALIZESV:
c9728782
DM
1126 a0 = ap[0];
1127 sv_2mortal(a0.any_sv);
26d9b02f 1128 break;
c9728782 1129
8990e307 1130 case SAVEt_FREEOP:
c9728782 1131 a0 = ap[0];
5e5ba94b 1132 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP");
6ffb8402 1133 op_free(a0.any_op);
8990e307 1134 break;
c9728782 1135
8990e307 1136 case SAVEt_FREEPV:
c9728782
DM
1137 a0 = ap[0];
1138 Safefree(a0.any_ptr);
8990e307 1139 break;
4e09461c 1140
4e09461c 1141 case SAVEt_CLEARPADRANGE:
75ebea3c 1142 {
bdb0ae96
FC
1143 I32 i;
1144 SV **svp;
1145 i = (I32)((uv >> SAVE_TIGHT_SHIFT) & OPpPADRANGE_COUNTMASK);
1146 svp = &PL_curpad[uv >>
4e09461c
DM
1147 (OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)] + i - 1;
1148 goto clearsv;
8990e307 1149 case SAVEt_CLEARSV:
4e09461c
DM
1150 svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT];
1151 i = 1;
1152 clearsv:
1153 for (; i; i--, svp--) {
9a2fefd6 1154 SV *sv = *svp;
528ad060
DM
1155
1156 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
147e3846 1157 "Pad 0x%" UVxf "[0x%" UVxf "] clearsv: %ld sv=0x%" UVxf "<%" IVdf "> %s\n",
528ad060
DM
1158 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
1159 (long)(svp-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
1160 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
1161 ));
1162
1163 /* Can clear pad variable in place? */
9af15990 1164 if (SvREFCNT(sv) == 1 && !SvOBJECT(sv)) {
a07f0bef 1165
a07f0bef
DM
1166 /* these flags are the union of all the relevant flags
1167 * in the individual conditions within */
1168 if (UNLIKELY(SvFLAGS(sv) & (
a623f893 1169 SVf_READONLY|SVf_PROTECT /*for SvREADONLY_off*/
a07f0bef 1170 | (SVs_GMG|SVs_SMG|SVs_RMG) /* SvMAGICAL() */
7532eaae 1171 | SVf_OOK
a07f0bef
DM
1172 | SVf_THINKFIRST)))
1173 {
7500fc82
DM
1174 /* if a my variable that was made readonly is
1175 * going out of scope, we want to remove the
1176 * readonlyness so that it can go out of scope
1177 * quietly
1178 */
57c404c9 1179 if (SvREADONLY(sv))
7500fc82
DM
1180 SvREADONLY_off(sv);
1181
7532eaae
DM
1182 if (SvOOK(sv)) { /* OOK or HvAUX */
1183 if (SvTYPE(sv) == SVt_PVHV)
1184 Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
1185 else
1186 sv_backoff(sv);
1187 }
1188
7500fc82 1189 if (SvMAGICAL(sv)) {
7532eaae
DM
1190 /* note that backrefs (either in HvAUX or magic)
1191 * must be removed before other magic */
7500fc82
DM
1192 sv_unmagic(sv, PERL_MAGIC_backref);
1193 if (SvTYPE(sv) != SVt_PVCV)
1194 mg_free(sv);
1195 }
1196 if (SvTHINKFIRST(sv))
1197 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF
1198 |SV_COW_DROP_PV);
528ad060 1199
a07f0bef 1200 }
528ad060
DM
1201 switch (SvTYPE(sv)) {
1202 case SVt_NULL:
1203 break;
1204 case SVt_PVAV:
1205 av_clear(MUTABLE_AV(sv));
1206 break;
1207 case SVt_PVHV:
1208 hv_clear(MUTABLE_HV(sv));
1209 break;
1210 case SVt_PVCV:
1211 {
79656330 1212 HEK *hek = CvGvNAME_HEK(sv);
528ad060 1213 assert(hek);
6110d17a 1214 (void)share_hek_hek(hek);
528ad060
DM
1215 cv_undef((CV *)sv);
1216 CvNAME_HEK_set(sv, hek);
f3feca7a 1217 CvLEXICAL_on(sv);
528ad060
DM
1218 break;
1219 }
1220 default:
c79d0076
NC
1221 /* This looks odd, but these two macros are for use in
1222 expressions and finish with a trailing comma, so
1223 adding a ; after them would be wrong. */
1224 assert_not_ROK(sv)
1225 assert_not_glob(sv)
5c85b638 1226 SvFLAGS(sv) &=~ (SVf_OK|SVf_IVisUV|SVf_UTF8);
528ad060
DM
1227 break;
1228 }
82e85a9c 1229 SvPADTMP_off(sv);
528ad060
DM
1230 SvPADSTALE_on(sv); /* mark as no longer live */
1231 }
1232 else { /* Someone has a claim on this, so abandon it. */
528ad060
DM
1233 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
1234 case SVt_PVAV: *svp = MUTABLE_SV(newAV()); break;
1235 case SVt_PVHV: *svp = MUTABLE_SV(newHV()); break;
1236 case SVt_PVCV:
1237 {
79656330 1238 HEK * const hek = CvGvNAME_HEK(sv);
9c98a81f 1239
528ad060
DM
1240 /* Create a stub */
1241 *svp = newSV_type(SVt_PVCV);
1242
1243 /* Share name */
528ad060 1244 CvNAME_HEK_set(*svp,
9c98a81f 1245 share_hek_hek(hek));
f3feca7a 1246 CvLEXICAL_on(*svp);
528ad060
DM
1247 break;
1248 }
1249 default: *svp = newSV(0); break;
1250 }
4a9a56a7 1251 SvREFCNT_dec_NN(sv); /* Cast current value to the winds. */
528ad060
DM
1252 /* preserve pad nature, but also mark as not live
1253 * for any closure capturing */
145bf8ee 1254 SvFLAGS(*svp) |= SVs_PADSTALE;
528ad060 1255 }
4e09461c 1256 }
8990e307 1257 break;
75ebea3c 1258 }
c9728782 1259
8990e307 1260 case SAVEt_DELETE:
c9728782 1261 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
85df897f
DM
1262 /* hv_delete could die, so free the key and SvREFCNT_dec the
1263 * hv by pushing new save actions
1264 */
1265 /* ap[0] is the key */
1266 ap[1].any_uv = SAVEt_FREEPV; /* was len */
1267 /* ap[2] is the hv */
1268 ap[3].any_uv = SAVEt_FREESV; /* was SAVEt_DELETE */
1269 PL_savestack_ix += 4;
c9728782 1270 (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD);
8990e307 1271 break;
c9728782 1272
c68ec7a9 1273 case SAVEt_ADELETE:
c9728782 1274 a0 = ap[0]; a1 = ap[1];
85df897f
DM
1275 /* av_delete could die, so SvREFCNT_dec the av by pushing a
1276 * new save action
1277 */
1278 ap[0].any_av = a1.any_av;
1279 ap[1].any_uv = SAVEt_FREESV;
1280 PL_savestack_ix += 2;
c9728782 1281 (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD);
c68ec7a9 1282 break;
c9728782 1283
146174a9 1284 case SAVEt_DESTRUCTOR_X:
c9728782
DM
1285 a0 = ap[0]; a1 = ap[1];
1286 (*a0.any_dxptr)(aTHX_ a1.any_ptr);
a0d0e21e 1287 break;
c9728782 1288
a0d0e21e 1289 case SAVEt_REGCONTEXT:
e0fa7e2b 1290 /* regexp must have croaked */
455ece5e 1291 case SAVEt_ALLOC:
1be36ce0 1292 PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT;
a0d0e21e 1293 break;
c9728782 1294
55497cff 1295 case SAVEt_STACK_POS: /* Position on Perl stack */
c9728782
DM
1296 a0 = ap[0];
1297 PL_stack_sp = PL_stack_base + a0.any_i32;
55497cff 1298 break;
c9728782 1299
161b7d16 1300 case SAVEt_AELEM: /* array element */
75ebea3c
DM
1301 {
1302 SV **svp;
c9728782
DM
1303 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1304 svp = av_fetch(a0.any_av, a1.any_iv, 1);
1305 if (UNLIKELY(!AvREAL(a0.any_av) && AvREIFY(a0.any_av))) /* undo reify guard */
1306 SvREFCNT_dec(a2.any_sv);
5d9574c1 1307 if (LIKELY(svp)) {
03dba561 1308 SV * const sv = *svp;
5d9574c1 1309 if (LIKELY(sv && sv != &PL_sv_undef)) {
c9728782 1310 if (UNLIKELY(SvTIED_mg((const SV *)a0.any_av, PERL_MAGIC_tied)))
b37c2d43 1311 SvREFCNT_inc_void_NN(sv);
75ebea3c
DM
1312 a1.any_sv = a2.any_sv;
1313 a2.any_svp = svp;
4e4c362e
GS
1314 goto restore_sv;
1315 }
1316 }
c9728782
DM
1317 SvREFCNT_dec(a0.any_av);
1318 SvREFCNT_dec(a2.any_sv);
4e4c362e 1319 break;
75ebea3c 1320 }
c9728782 1321
161b7d16 1322 case SAVEt_HELEM: /* hash element */
03dba561 1323 {
9a2fefd6
DM
1324 HE *he;
1325
c9728782
DM
1326 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1327 he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0);
1328 SvREFCNT_dec(a1.any_sv);
5d9574c1 1329 if (LIKELY(he)) {
03dba561 1330 const SV * const oval = HeVAL(he);
5d9574c1 1331 if (LIKELY(oval && oval != &PL_sv_undef)) {
75ebea3c 1332 SV **svp = &HeVAL(he);
c9728782 1333 if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied)))
03dba561 1334 SvREFCNT_inc_void(*svp);
75ebea3c
DM
1335 a1.any_sv = a2.any_sv;
1336 a2.any_svp = svp;
4e4c362e
GS
1337 goto restore_sv;
1338 }
1339 }
c9728782
DM
1340 SvREFCNT_dec(a0.any_hv);
1341 SvREFCNT_dec(a2.any_sv);
4e4c362e 1342 break;
03dba561 1343 }
75ebea3c 1344
462e5cf6 1345 case SAVEt_OP:
c9728782
DM
1346 a0 = ap[0];
1347 PL_op = (OP*)a0.any_ptr;
462e5cf6 1348 break;
c9728782 1349
25eaa213 1350 case SAVEt_HINTS:
c9728782 1351 a0 = ap[0]; a1 = ap[1];
3607ca02
FC
1352 if ((PL_hints & HINT_LOCALIZE_HH)) {
1353 while (GvHV(PL_hintgv)) {
2653c1e3 1354 HV *hv = GvHV(PL_hintgv);
045ac317 1355 GvHV(PL_hintgv) = NULL;
2653c1e3 1356 SvREFCNT_dec(MUTABLE_SV(hv));
3607ca02 1357 }
045ac317 1358 }
20439bc7 1359 cophh_free(CopHINTHASH_get(&PL_compiling));
c9728782
DM
1360 CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr);
1361 *(I32*)&PL_hints = a0.any_i32;
dfa41748 1362 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 1363 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 1364 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
2653c1e3
DM
1365 }
1366 if (!GvHV(PL_hintgv)) {
a3fb8386
FC
1367 /* Need to add a new one manually, else rv2hv can
1368 add one via GvHVn and it won't have the magic set. */
5b9c0671
NC
1369 HV *const hv = newHV();
1370 hv_magic(hv, NULL, PERL_MAGIC_hints);
1371 GvHV(PL_hintgv) = hv;
dfa41748 1372 }
5b9c0671 1373 assert(GvHV(PL_hintgv));
b3ac6de7 1374 break;
c9728782 1375
cb50131a 1376 case SAVEt_COMPPAD:
c9728782
DM
1377 a0 = ap[0];
1378 PL_comppad = (PAD*)a0.any_ptr;
5d9574c1 1379 if (LIKELY(PL_comppad))
cb50131a
CB
1380 PL_curpad = AvARRAY(PL_comppad);
1381 else
4608196e 1382 PL_curpad = NULL;
cb50131a 1383 break;
c9728782 1384
09edbca0 1385 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1386 {
09edbca0 1387 SV **svp;
9a2fefd6 1388
c9728782
DM
1389 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1390 assert (a1.any_ptr);
1391 svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv;
b405d38b
DM
1392 /* This mortalizing used to be done by CX_POOPLOOP() via
1393 itersave. But as we have all the information here, we
1394 can do it here, save even having to have itersave in
1395 the struct.
1396 */
09edbca0 1397 sv_2mortal(*svp);
c9728782 1398 *svp = a0.any_sv;
c3564e5c
GS
1399 }
1400 break;
c9728782 1401
8b7059b1
DM
1402 case SAVEt_SAVESWITCHSTACK:
1403 {
1404 dSP;
9a2fefd6 1405
c9728782
DM
1406 a0 = ap[0]; a1 = ap[1];
1407 SWITCHSTACK(a1.any_av, a0.any_av);
1408 PL_curstackinfo->si_stack = a0.any_av;
8b7059b1
DM
1409 }
1410 break;
c9728782 1411
14f338dc 1412 case SAVEt_SET_SVFLAGS:
c9728782
DM
1413 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1414 SvFLAGS(a0.any_sv) &= ~(a1.any_u32);
1415 SvFLAGS(a0.any_sv) |= a2.any_u32;
14f338dc 1416 break;
95e06916 1417
95e06916
NC
1418 /* These are only saved in mathoms.c */
1419 case SAVEt_NSTAB:
c9728782
DM
1420 a0 = ap[0];
1421 (void)sv_clear(a0.any_sv);
95e06916 1422 break;
c9728782 1423
2053acbf 1424 case SAVEt_LONG: /* long reference */
c9728782
DM
1425 a0 = ap[0]; a1 = ap[1];
1426 *(long*)a1.any_ptr = a0.any_long;
2053acbf 1427 break;
c9728782 1428
95e06916 1429 case SAVEt_IV: /* IV reference */
c9728782
DM
1430 a0 = ap[0]; a1 = ap[1];
1431 *(IV*)a1.any_ptr = a0.any_iv;
95e06916
NC
1432 break;
1433
2053acbf 1434 case SAVEt_I16: /* I16 reference */
c9728782
DM
1435 a0 = ap[0];
1436 *(I16*)a0.any_ptr = (I16)(uv >> 8);
2053acbf 1437 break;
c9728782 1438
2053acbf 1439 case SAVEt_I8: /* I8 reference */
c9728782
DM
1440 a0 = ap[0];
1441 *(I8*)a0.any_ptr = (I8)(uv >> 8);
2053acbf 1442 break;
c9728782 1443
2053acbf 1444 case SAVEt_DESTRUCTOR:
c9728782
DM
1445 a0 = ap[0]; a1 = ap[1];
1446 (*a0.any_dptr)(a1.any_ptr);
2053acbf 1447 break;
c9728782 1448
68da3b2f 1449 case SAVEt_COMPILE_WARNINGS:
c9728782 1450 a0 = ap[0];
68da3b2f
NC
1451 if (!specialWARN(PL_compiling.cop_warnings))
1452 PerlMemShared_free(PL_compiling.cop_warnings);
c9728782 1453 PL_compiling.cop_warnings = (STRLEN*)a0.any_ptr;
72dc9ed5 1454 break;
c9728782 1455
7c197c94 1456 case SAVEt_PARSER:
c9728782
DM
1457 a0 = ap[0];
1458 parser_free((yy_parser *)a0.any_ptr);
7c197c94 1459 break;
c9728782 1460
20d5dc23 1461 case SAVEt_READONLY_OFF:
c9728782
DM
1462 a0 = ap[0];
1463 SvREADONLY_off(a0.any_sv);
20d5dc23 1464 break;
c9728782 1465
79072805 1466 default:
75ebea3c
DM
1467 Perl_croak(aTHX_ "panic: leave_scope inconsistency %u",
1468 (U8)uv & SAVE_MASK);
79072805
LW
1469 }
1470 }
302c0c93 1471
284167a5 1472 TAINT_set(was);
79072805 1473}
8990e307 1474
8990e307 1475void
864dbfa3 1476Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1477{
7918f24d
NC
1478 PERL_ARGS_ASSERT_CX_DUMP;
1479
35ff7856 1480#ifdef DEBUGGING
22c35a8c 1481 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1482 if (CxTYPE(cx) != CXt_SUBST) {
e8d9e9d0 1483 const char *gimme_text;
760ac839 1484 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
147e3846 1485 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%" UVxf "\n",
146174a9 1486 PTR2UV(cx->blk_oldcop));
760ac839
LW
1487 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1488 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
e992140c 1489 PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix);
147e3846 1490 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%" UVxf "\n",
146174a9 1491 PTR2UV(cx->blk_oldpm));
e8d9e9d0
VP
1492 switch (cx->blk_gimme) {
1493 case G_VOID:
1494 gimme_text = "VOID";
1495 break;
1496 case G_SCALAR:
1497 gimme_text = "SCALAR";
1498 break;
1499 case G_ARRAY:
1500 gimme_text = "LIST";
1501 break;
1502 default:
1503 gimme_text = "UNKNOWN";
1504 break;
1505 }
1506 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text);
8990e307 1507 }
6b35e009 1508 switch (CxTYPE(cx)) {
8990e307
LW
1509 case CXt_NULL:
1510 case CXt_BLOCK:
1511 break;
146174a9 1512 case CXt_FORMAT:
147e3846 1513 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%" UVxf "\n",
f9c764c5 1514 PTR2UV(cx->blk_format.cv));
147e3846 1515 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%" UVxf "\n",
f9c764c5 1516 PTR2UV(cx->blk_format.gv));
147e3846 1517 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%" UVxf "\n",
f9c764c5
NC
1518 PTR2UV(cx->blk_format.dfoutgv));
1519 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1520 (int)CxHASARGS(cx));
147e3846 1521 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%" UVxf "\n",
f9c764c5 1522 PTR2UV(cx->blk_format.retop));
146174a9 1523 break;
8990e307 1524 case CXt_SUB:
147e3846 1525 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%" UVxf "\n",
146174a9 1526 PTR2UV(cx->blk_sub.cv));
760ac839 1527 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1528 (long)cx->blk_sub.olddepth);
760ac839 1529 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1530 (int)CxHASARGS(cx));
1531 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
147e3846 1532 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%" UVxf "\n",
f39bc417 1533 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1534 break;
1535 case CXt_EVAL:
760ac839 1536 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1537 (long)CxOLD_IN_EVAL(cx));
760ac839 1538 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1539 PL_op_name[CxOLD_OP_TYPE(cx)],
1540 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1541 if (cx->blk_eval.old_namesv)
1542 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1543 SvPVX_const(cx->blk_eval.old_namesv));
147e3846 1544 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%" UVxf "\n",
146174a9 1545 PTR2UV(cx->blk_eval.old_eval_root));
147e3846 1546 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%" UVxf "\n",
f39bc417 1547 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1548 break;
1549
93661e56 1550 case CXt_LOOP_PLAIN:
c6fdafd0 1551 case CXt_LOOP_LAZYIV:
d01136d6 1552 case CXt_LOOP_LAZYSV:
93661e56
DM
1553 case CXt_LOOP_LIST:
1554 case CXt_LOOP_ARY:
0cbdab38 1555 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
147e3846 1556 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%" UVxf "\n",
022eaa24 1557 PTR2UV(cx->blk_loop.my_op));
0925dc7f 1558 if (CxTYPE(cx) != CXt_LOOP_PLAIN) {
147e3846 1559 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%" UVxf "\n",
0925dc7f 1560 PTR2UV(CxITERVAR(cx)));
147e3846 1561 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%" UVxf "\n",
0925dc7f 1562 PTR2UV(cx->blk_loop.itersave));
619bbb9a
Z
1563 }
1564 if (CxTYPE(cx) == CXt_LOOP_ARY) {
147e3846 1565 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%" UVxf "\n",
0925dc7f
DM
1566 PTR2UV(cx->blk_loop.state_u.ary.ary));
1567 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1568 (long)cx->blk_loop.state_u.ary.ix);
1569 }
8990e307
LW
1570 break;
1571
1572 case CXt_SUBST:
760ac839 1573 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1574 (long)cx->sb_iters);
760ac839 1575 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1576 (long)cx->sb_maxiters);
35ef4773
GS
1577 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1578 (long)cx->sb_rflags);
760ac839 1579 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1580 (long)CxONCE(cx));
760ac839 1581 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1582 cx->sb_orig);
147e3846 1583 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%" UVxf "\n",
146174a9 1584 PTR2UV(cx->sb_dstr));
147e3846 1585 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%" UVxf "\n",
146174a9 1586 PTR2UV(cx->sb_targ));
147e3846 1587 PerlIO_printf(Perl_debug_log, "SB_S = 0x%" UVxf "\n",
146174a9 1588 PTR2UV(cx->sb_s));
147e3846 1589 PerlIO_printf(Perl_debug_log, "SB_M = 0x%" UVxf "\n",
146174a9 1590 PTR2UV(cx->sb_m));
147e3846 1591 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%" UVxf "\n",
146174a9 1592 PTR2UV(cx->sb_strend));
147e3846 1593 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%" UVxf "\n",
146174a9 1594 PTR2UV(cx->sb_rxres));
8990e307
LW
1595 break;
1596 }
65e66c80 1597#else
96a5add6 1598 PERL_UNUSED_CONTEXT;
65e66c80 1599 PERL_UNUSED_ARG(cx);
17c3b450 1600#endif /* DEBUGGING */
35ff7856 1601}
241d1a3b
NC
1602
1603/*
14d04a33 1604 * ex: set ts=8 sts=4 sw=4 et:
37442d52 1605 */