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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
LW
27#include "perl.h"
28
a0d0e21e 29SV**
864dbfa3 30Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
a0d0e21e 31{
97aff369 32 dVAR;
7918f24d
NC
33
34 PERL_ARGS_ASSERT_STACK_GROW;
35
3280af22 36 PL_stack_sp = sp;
2ce36478 37#ifndef STRESS_REALLOC
3280af22 38 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
2ce36478 39#else
6b88bc9c 40 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
2ce36478 41#endif
3280af22 42 return PL_stack_sp;
a0d0e21e
LW
43}
44
2ce36478
SM
45#ifndef STRESS_REALLOC
46#define GROW(old) ((old) * 3 / 2)
47#else
48#define GROW(old) ((old) + 1)
49#endif
50
e336de0d 51PERL_SI *
864dbfa3 52Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d 53{
97aff369 54 dVAR;
e336de0d 55 PERL_SI *si;
a02a5408 56 Newx(si, 1, PERL_SI);
e336de0d
GS
57 si->si_stack = newAV();
58 AvREAL_off(si->si_stack);
59 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 60 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
61 AvFILLp(si->si_stack) = 0;
62 si->si_prev = 0;
63 si->si_next = 0;
64 si->si_cxmax = cxitems - 1;
65 si->si_cxix = -1;
e788e7d3 66 si->si_type = PERLSI_UNDEF;
a02a5408 67 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
9965345d
JH
68 /* Without any kind of initialising PUSHSUBST()
69 * in pp_subst() will read uninitialised heap. */
7e337ee0 70 PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
71 return si;
72}
73
79072805 74I32
864dbfa3 75Perl_cxinc(pTHX)
79072805 76{
97aff369 77 dVAR;
a3b680e6 78 const IV old_max = cxstack_max;
2ce36478 79 cxstack_max = GROW(cxstack_max);
c09156bb 80 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
9965345d
JH
81 /* Without any kind of initialising deep enough recursion
82 * will end up reading uninitialised PERL_CONTEXTs. */
7e337ee0 83 PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
84 return cxstack_ix + 1;
85}
86
79072805 87void
864dbfa3 88Perl_push_scope(pTHX)
79072805 89{
97aff369 90 dVAR;
3280af22
NIS
91 if (PL_scopestack_ix == PL_scopestack_max) {
92 PL_scopestack_max = GROW(PL_scopestack_max);
93 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 94 }
3280af22 95 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
96
97}
98
99void
864dbfa3 100Perl_pop_scope(pTHX)
79072805 101{
97aff369 102 dVAR;
35a4481c 103 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 104 LEAVE_SCOPE(oldsave);
79072805
LW
105}
106
107void
864dbfa3 108Perl_markstack_grow(pTHX)
a0d0e21e 109{
97aff369 110 dVAR;
35a4481c
AL
111 const I32 oldmax = PL_markstack_max - PL_markstack;
112 const I32 newmax = GROW(oldmax);
a0d0e21e 113
3280af22
NIS
114 Renew(PL_markstack, newmax, I32);
115 PL_markstack_ptr = PL_markstack + oldmax;
116 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
117}
118
119void
864dbfa3 120Perl_savestack_grow(pTHX)
79072805 121{
97aff369 122 dVAR;
8aacddc1 123 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 124 Renew(PL_savestack, PL_savestack_max, ANY);
79072805
LW
125}
126
4b3c1a47
AE
127void
128Perl_savestack_grow_cnt(pTHX_ I32 need)
129{
97aff369 130 dVAR;
4b3c1a47
AE
131 PL_savestack_max = PL_savestack_ix + need;
132 Renew(PL_savestack, PL_savestack_max, ANY);
133}
134
2ce36478
SM
135#undef GROW
136
79072805 137void
864dbfa3 138Perl_tmps_grow(pTHX_ I32 n)
677b06e3 139{
97aff369 140 dVAR;
677b06e3
GS
141#ifndef STRESS_REALLOC
142 if (n < 128)
143 n = (PL_tmps_max < 512) ? 128 : 512;
144#endif
145 PL_tmps_max = PL_tmps_ix + n + 1;
146 Renew(PL_tmps_stack, PL_tmps_max, SV*);
147}
148
149
150void
864dbfa3 151Perl_free_tmps(pTHX)
79072805 152{
97aff369 153 dVAR;
79072805 154 /* XXX should tmps_floor live in cxstack? */
35a4481c 155 const I32 myfloor = PL_tmps_floor;
3280af22 156 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
901017d6 157 SV* const sv = PL_tmps_stack[PL_tmps_ix];
a0714e2c 158 PL_tmps_stack[PL_tmps_ix--] = NULL;
8aacddc1 159 if (sv && sv != &PL_sv_undef) {
463ee0b2 160 SvTEMP_off(sv);
8990e307 161 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 162 }
79072805
LW
163 }
164}
165
76e3520e 166STATIC SV *
af7df257 167S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 168{
97aff369 169 dVAR;
75d34a09
VP
170 SV * osv;
171 register SV *sv;
79072805 172
7918f24d
NC
173 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
174
75d34a09
VP
175 osv = *sptr;
176 sv = (flags & SAVEf_KEEPOLDELEM) ? osv : (*sptr = newSV(0));
177
a0d0e21e 178 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
a0d0e21e 179 if (SvGMAGICAL(osv)) {
35a4481c 180 const bool oldtainted = PL_tainted;
a0d0e21e 181 SvFLAGS(osv) |= (SvFLAGS(osv) &
c268c2a6 182 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 183 PL_tainted = oldtainted;
a0d0e21e 184 }
75d34a09
VP
185 if (!(flags & SAVEf_KEEPOLDELEM))
186 mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0);
79072805 187 }
75d34a09 188
79072805
LW
189 return sv;
190}
191
dfcd3de5
NC
192void
193Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3
NC
194{
195 dVAR;
196 SSCHECK(3);
197 SSPUSHPTR(ptr1);
198 SSPUSHPTR(ptr2);
199 SSPUSHINT(type);
200}
201
7a4c00b4 202SV *
864dbfa3 203Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 204{
97aff369 205 dVAR;
fb4fc1fa 206 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
207
208 PERL_ARGS_ASSERT_SAVE_SCALAR;
209
27cc343c 210 PL_localizing = 1;
0cbee0a4 211 SvGETMAGIC(*sptr);
27cc343c 212 PL_localizing = 0;
e22024d3 213 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
af7df257 214 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
215}
216
f4dd75d9 217/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
218 * restore a global SV to its prior contents, freeing new value. */
219void
864dbfa3 220Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 221{
97aff369 222 dVAR;
7918f24d
NC
223
224 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
225
e22024d3 226 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
227}
228
f4dd75d9
GS
229/* Like save_pptr(), but also Safefree()s the new value if it is different
230 * from the old one. Can be used to restore a global char* to its prior
231 * contents, freeing new value. */
232void
233Perl_save_generic_pvref(pTHX_ char **str)
234{
97aff369 235 dVAR;
7918f24d
NC
236
237 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
238
e22024d3 239 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
240}
241
05ec9bb3
NIS
242/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
243 * Can be used to restore a shared global char* to its prior
244 * contents, freeing new value. */
245void
246Perl_save_shared_pvref(pTHX_ char **str)
247{
97aff369 248 dVAR;
7918f24d
NC
249
250 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
251
e22024d3 252 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
253}
254
14f338dc
DM
255/* set the SvFLAGS specified by mask to the values in val */
256
257void
258Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
259{
97aff369 260 dVAR;
7918f24d
NC
261
262 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
263
14f338dc
DM
264 SSCHECK(4);
265 SSPUSHPTR(sv);
266 SSPUSHINT(mask);
267 SSPUSHINT(val);
268 SSPUSHINT(SAVEt_SET_SVFLAGS);
269}
270
79072805 271void
864dbfa3 272Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 273{
97aff369 274 dVAR;
7918f24d
NC
275
276 PERL_ARGS_ASSERT_SAVE_GP;
277
e22024d3 278 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 279
5f05dabc 280 if (empty) {
12816592 281 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 282
fae75791 283 if (GvCVu(gv))
e1a479c5 284 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
285 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
286 gp->gp_io = newIO();
287 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
288 }
72651472
NC
289#ifdef PERL_DONT_CREATE_GVSV
290 if (gv == PL_errgv) {
291 /* We could scatter this logic everywhere by changing the
292 definition of ERRSV from GvSV() to GvSVn(), but it seems more
293 efficient to do this check once here. */
294 gp->gp_sv = newSV(0);
295 }
296#endif
12816592 297 GvGP(gv) = gp;
5f05dabc
PP
298 }
299 else {
44a8e56a 300 gp_ref(GvGP(gv));
5f05dabc
PP
301 GvINTRO_on(gv);
302 }
79072805 303}
79072805 304
79072805 305AV *
864dbfa3 306Perl_save_ary(pTHX_ GV *gv)
79072805 307{
97aff369 308 dVAR;
901017d6 309 AV * const oav = GvAVn(gv);
67a38de0 310 AV *av;
fb73857a 311
7918f24d
NC
312 PERL_ARGS_ASSERT_SAVE_ARY;
313
67a38de0
NIS
314 if (!AvREAL(oav) && AvREIFY(oav))
315 av_reify(oav);
e22024d3 316 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 317
4608196e 318 GvAV(gv) = NULL;
fb73857a 319 av = GvAVn(gv);
0cbee0a4 320 if (SvMAGIC(oav))
9711599e 321 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 322 return av;
79072805
LW
323}
324
325HV *
864dbfa3 326Perl_save_hash(pTHX_ GV *gv)
79072805 327{
97aff369 328 dVAR;
fb73857a
PP
329 HV *ohv, *hv;
330
7918f24d
NC
331 PERL_ARGS_ASSERT_SAVE_HASH;
332
e22024d3 333 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 334
4608196e 335 GvHV(gv) = NULL;
fb73857a 336 hv = GvHVn(gv);
0cbee0a4 337 if (SvMAGIC(ohv))
9711599e 338 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 339 return hv;
79072805
LW
340}
341
342void
864dbfa3 343Perl_save_item(pTHX_ register SV *item)
79072805 344{
97aff369 345 dVAR;
901017d6 346 register SV * const sv = newSVsv(item);
79072805 347
7918f24d
NC
348 PERL_ARGS_ASSERT_SAVE_ITEM;
349
e22024d3
NC
350 save_pushptrptr(item, /* remember the pointer */
351 sv, /* remember the value */
352 SAVEt_ITEM);
79072805
LW
353}
354
355void
1409bc06 356Perl_save_bool(pTHX_ bool *boolp)
79072805 357{
97aff369 358 dVAR;
7918f24d 359
1409bc06 360 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 361
79072805 362 SSCHECK(3);
1409bc06
NC
363 SSPUSHBOOL(*boolp);
364 SSPUSHPTR(boolp);
365 SSPUSHINT(SAVEt_BOOL);
366}
367
7623d426
NC
368void
369Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
370{
371 dVAR;
372 SSCHECK(3);
373 SSPUSHINT(i);
374 SSPUSHPTR(ptr);
375 SSPUSHINT(type);
79072805
LW
376}
377
378void
1409bc06 379Perl_save_int(pTHX_ int *intp)
9febdf04 380{
97aff369 381 dVAR;
7918f24d 382
1409bc06 383 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 384
1409bc06 385 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
386}
387
388void
58188858
RGS
389Perl_save_I8(pTHX_ I8 *bytep)
390{
391 dVAR;
7918f24d
NC
392
393 PERL_ARGS_ASSERT_SAVE_I8;
394
1409bc06 395 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
396}
397
398void
87a84751
JH
399Perl_save_I16(pTHX_ I16 *intp)
400{
401 dVAR;
7918f24d
NC
402
403 PERL_ARGS_ASSERT_SAVE_I16;
404
1409bc06 405 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
406}
407
408void
864dbfa3 409Perl_save_I32(pTHX_ I32 *intp)
79072805 410{
97aff369 411 dVAR;
7918f24d
NC
412
413 PERL_ARGS_ASSERT_SAVE_I32;
414
1409bc06 415 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
416}
417
85e6fe83
LW
418/* Cannot use save_sptr() to store a char* since the SV** cast will
419 * force word-alignment and we'll miss the pointer.
420 */
421void
864dbfa3 422Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 423{
97aff369 424 dVAR;
7918f24d
NC
425
426 PERL_ARGS_ASSERT_SAVE_PPTR;
427
e22024d3 428 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
429}
430
79072805 431void
146174a9
CB
432Perl_save_vptr(pTHX_ void *ptr)
433{
97aff369 434 dVAR;
7918f24d
NC
435
436 PERL_ARGS_ASSERT_SAVE_VPTR;
437
e22024d3 438 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
439}
440
441void
864dbfa3 442Perl_save_sptr(pTHX_ SV **sptr)
79072805 443{
97aff369 444 dVAR;
7918f24d
NC
445
446 PERL_ARGS_ASSERT_SAVE_SPTR;
447
e22024d3 448 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
449}
450
c3564e5c 451void
09edbca0 452Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 453{
97aff369 454 dVAR;
c3564e5c 455 SSCHECK(4);
f3548bdc 456 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 457 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 458 SSPUSHPTR(PL_comppad);
c3564e5c 459 SSPUSHLONG((long)off);
09edbca0 460 SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
461}
462
79072805 463void
864dbfa3 464Perl_save_hptr(pTHX_ HV **hptr)
79072805 465{
97aff369 466 dVAR;
7918f24d
NC
467
468 PERL_ARGS_ASSERT_SAVE_HPTR;
469
e22024d3 470 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
471}
472
473void
864dbfa3 474Perl_save_aptr(pTHX_ AV **aptr)
79072805 475{
97aff369 476 dVAR;
7918f24d
NC
477
478 PERL_ARGS_ASSERT_SAVE_APTR;
479
e22024d3 480 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
481}
482
483void
2fd8beea 484Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 485{
97aff369 486 dVAR;
8990e307 487 SSCHECK(2);
2fd8beea
NC
488 SSPUSHPTR(ptr);
489 SSPUSHINT(type);
8990e307
LW
490}
491
492void
864dbfa3 493Perl_save_clearsv(pTHX_ SV **svp)
8990e307 494{
97aff369 495 dVAR;
7918f24d
NC
496
497 PERL_ARGS_ASSERT_SAVE_CLEARSV;
498
f3548bdc 499 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 500 SSCHECK(2);
3280af22 501 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 502 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 503 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
504}
505
506void
864dbfa3 507Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 508{
97aff369 509 dVAR;
7918f24d
NC
510
511 PERL_ARGS_ASSERT_SAVE_DELETE;
512
85a721ca 513 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
514}
515
516void
af097752
VP
517Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
518{
519 STRLEN len;
520 I32 klen;
521 const char *key;
522
523 PERL_ARGS_ASSERT_SAVE_HDELETE;
524
525 key = SvPV_const(keysv, len);
526 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
527 SvREFCNT_inc_simple_void_NN(hv);
528 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
529}
530
531void
c68ec7a9
VP
532Perl_save_adelete(pTHX_ AV *av, I32 key)
533{
534 dVAR;
535
536 PERL_ARGS_ASSERT_SAVE_ADELETE;
537
538 SvREFCNT_inc_void(av);
539 save_pushi32ptr(key, av, SAVEt_ADELETE);
540}
541
542void
12ab1f58
JH
543Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
544{
545 dVAR;
7918f24d
NC
546
547 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
548
12ab1f58
JH
549 SSCHECK(3);
550 SSPUSHDPTR(f);
551 SSPUSHPTR(p);
552 SSPUSHINT(SAVEt_DESTRUCTOR);
553}
554
555void
146174a9
CB
556Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
557{
97aff369 558 dVAR;
146174a9
CB
559 SSCHECK(3);
560 SSPUSHDXPTR(f);
561 SSPUSHPTR(p);
562 SSPUSHINT(SAVEt_DESTRUCTOR_X);
563}
564
565void
da8315f8
NC
566Perl_save_hints(pTHX)
567{
568 dVAR;
569 if (PL_compiling.cop_hints_hash) {
570 HINTS_REFCNT_LOCK;
571 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
572 HINTS_REFCNT_UNLOCK;
573 }
da8315f8 574 if (PL_hints & HINT_LOCALIZE_HH) {
be84297e
NC
575 save_pushptri32ptr(GvHV(PL_hintgv), PL_hints,
576 PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 577 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
be84297e
NC
578 } else {
579 save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 580 }
be84297e
NC
581}
582
583static void
584S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
585 const int type)
586{
587 SSCHECK(4);
588 SSPUSHPTR(ptr1);
589 SSPUSHINT(i);
590 SSPUSHPTR(ptr2);
591 SSPUSHINT(type);
da8315f8
NC
592}
593
594void
91d1c79f 595Perl_save_aelem_flags(pTHX_ AV *av, I32 idx, SV **sptr, const U32 flags)
4e4c362e 596{
97aff369 597 dVAR;
bfc4de9f 598 SV *sv;
7918f24d 599
91d1c79f 600 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 601
0cbee0a4 602 SvGETMAGIC(*sptr);
be84297e
NC
603 save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr),
604 SAVEt_AELEM);
5dd42e15
DM
605 /* if it gets reified later, the restore will have the wrong refcnt */
606 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 607 SvREFCNT_inc_void(*sptr);
91d1c79f 608 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
609 if (flags & SAVEf_KEEPOLDELEM)
610 return;
bfc4de9f
DM
611 sv = *sptr;
612 /* If we're localizing a tied array element, this new sv
613 * won't actually be stored in the array - so it won't get
614 * reaped when the localize ends. Ensure it gets reaped by
615 * mortifying it instead. DAPM */
616 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
617 sv_2mortal(sv);
4e4c362e
GS
618}
619
620void
af7df257 621Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 622{
97aff369 623 dVAR;
bfc4de9f 624 SV *sv;
7918f24d 625
af7df257 626 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 627
0cbee0a4 628 SvGETMAGIC(*sptr);
4e4c362e 629 SSCHECK(4);
b37c2d43 630 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 631 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
632 SSPUSHPTR(SvREFCNT_inc(*sptr));
633 SSPUSHINT(SAVEt_HELEM);
af7df257 634 save_scalar_at(sptr, flags);
75d34a09
VP
635 if (flags & SAVEf_KEEPOLDELEM)
636 return;
bfc4de9f
DM
637 sv = *sptr;
638 /* If we're localizing a tied hash element, this new sv
639 * won't actually be stored in the hash - so it won't get
640 * reaped when the localize ends. Ensure it gets reaped by
641 * mortifying it instead. DAPM */
642 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
643 sv_2mortal(sv);
4e4c362e
GS
644}
645
2053acbf
NC
646SV*
647Perl_save_svref(pTHX_ SV **sptr)
648{
649 dVAR;
7918f24d
NC
650
651 PERL_ARGS_ASSERT_SAVE_SVREF;
652
2053acbf 653 SvGETMAGIC(*sptr);
e22024d3 654 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 655 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
656}
657
455ece5e 658I32
864dbfa3 659Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 660{
97aff369 661 dVAR;
35a4481c 662 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 663 - (char*)PL_savestack);
35a4481c 664 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 665
1bb4c835 666 SSGROW(elems + 2);
455ece5e
AD
667
668 PL_savestack_ix += elems;
669 SSPUSHINT(elems);
670 SSPUSHINT(SAVEt_ALLOC);
671 return start;
672}
673
462e5cf6 674void
864dbfa3 675Perl_leave_scope(pTHX_ I32 base)
79072805 676{
97aff369 677 dVAR;
79072805
LW
678 register SV *sv;
679 register SV *value;
680 register GV *gv;
681 register AV *av;
682 register HV *hv;
20454177 683 void* ptr;
f4dd75d9 684 register char* str;
161b7d16 685 I32 i;
302c0c93
NC
686 /* Localise the effects of the TAINT_NOT inside the loop. */
687 const bool was = PL_tainted;
79072805
LW
688
689 if (base < -1)
cea2e8a9 690 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 691 while (PL_savestack_ix > base) {
c6ae7647
NC
692 TAINT_NOT;
693
79072805
LW
694 switch (SSPOPINT) {
695 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
696 value = MUTABLE_SV(SSPOPPTR);
697 sv = MUTABLE_SV(SSPOPPTR);
79072805 698 sv_replace(sv,value);
3280af22 699 PL_localizing = 2;
79072805 700 SvSETMAGIC(sv);
3280af22 701 PL_localizing = 0;
79072805 702 break;
8aacddc1 703 case SAVEt_SV: /* scalar reference */
ad64d0ec 704 value = MUTABLE_SV(SSPOPPTR);
159b6efe 705 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 706 ptr = &GvSV(gv);
502c6561 707 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
708 restore_sv:
709 sv = *(SV**)ptr;
2053acbf
NC
710 *(SV**)ptr = value;
711 SvREFCNT_dec(sv);
712 PL_localizing = 2;
713 SvSETMAGIC(value);
714 PL_localizing = 0;
715 SvREFCNT_dec(value);
716 if (av) /* actually an av, hv or gv */
717 SvREFCNT_dec(av);
718 break;
8aacddc1 719 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 720 ptr = SSPOPPTR;
b03d03b0 721 str = (char*)SSPOPPTR;
f4dd75d9
GS
722 if (*(char**)ptr != str) {
723 Safefree(*(char**)ptr);
724 *(char**)ptr = str;
725 }
726 break;
05ec9bb3
NIS
727 case SAVEt_SHARED_PVREF: /* shared pv */
728 str = (char*)SSPOPPTR;
729 ptr = SSPOPPTR;
730 if (*(char**)ptr != str) {
5e54c26f 731#ifdef NETWARE
9ecbcc42 732 PerlMem_free(*(char**)ptr);
5e54c26f 733#else
05ec9bb3 734 PerlMemShared_free(*(char**)ptr);
5e54c26f 735#endif
05ec9bb3
NIS
736 *(char**)ptr = str;
737 }
738 break;
8aacddc1 739 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 740 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 741 ptr = SSPOPPTR;
f4dd75d9
GS
742 sv = *(SV**)ptr;
743 *(SV**)ptr = value;
744 SvREFCNT_dec(sv);
b9d12d37
GS
745 SvREFCNT_dec(value);
746 break;
8aacddc1 747 case SAVEt_AV: /* array reference */
502c6561 748 av = MUTABLE_AV(SSPOPPTR);
159b6efe 749 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 750 SvREFCNT_dec(GvAV(gv));
8aacddc1 751 GvAV(gv) = av;
fb73857a 752 if (SvMAGICAL(av)) {
3280af22 753 PL_localizing = 2;
ad64d0ec 754 SvSETMAGIC(MUTABLE_SV(av));
3280af22 755 PL_localizing = 0;
fb73857a 756 }
8aacddc1
NIS
757 break;
758 case SAVEt_HV: /* hash reference */
85fbaab2 759 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 760 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 761 SvREFCNT_dec(GvHV(gv));
8aacddc1 762 GvHV(gv) = hv;
fb73857a 763 if (SvMAGICAL(hv)) {
3280af22 764 PL_localizing = 2;
ad64d0ec 765 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 766 PL_localizing = 0;
fb73857a 767 }
8aacddc1 768 break;
79072805
LW
769 case SAVEt_INT: /* int reference */
770 ptr = SSPOPPTR;
771 *(int*)ptr = (int)SSPOPINT;
772 break;
9febdf04
RH
773 case SAVEt_BOOL: /* bool reference */
774 ptr = SSPOPPTR;
775 *(bool*)ptr = (bool)SSPOPBOOL;
776 break;
79072805
LW
777 case SAVEt_I32: /* I32 reference */
778 ptr = SSPOPPTR;
3235b7a3
NC
779#ifdef PERL_DEBUG_READONLY_OPS
780 {
781 const I32 val = SSPOPINT;
782 if (*(I32*)ptr != val)
783 *(I32*)ptr = val;
784 }
785#else
79072805 786 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 787#endif
79072805
LW
788 break;
789 case SAVEt_SPTR: /* SV* reference */
790 ptr = SSPOPPTR;
ad64d0ec 791 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 792 break;
146174a9 793 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
794 case SAVEt_PPTR: /* char* reference */
795 ptr = SSPOPPTR;
796 *(char**)ptr = (char*)SSPOPPTR;
797 break;
79072805
LW
798 case SAVEt_HPTR: /* HV* reference */
799 ptr = SSPOPPTR;
85fbaab2 800 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
801 break;
802 case SAVEt_APTR: /* AV* reference */
803 ptr = SSPOPPTR;
502c6561 804 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 805 break;
fb73857a 806 case SAVEt_GP: /* scalar reference */
79072805 807 ptr = SSPOPPTR;
159b6efe 808 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
809 gp_free(gv);
810 GvGP(gv) = (GP*)ptr;
dd69841b
BB
811 /* putting a method back into circulation ("local")*/
812 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
813 mro_method_changed_in(hv);
4633a7c4 814 SvREFCNT_dec(gv);
8aacddc1 815 break;
8990e307
LW
816 case SAVEt_FREESV:
817 ptr = SSPOPPTR;
ad64d0ec 818 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 819 break;
26d9b02f
JH
820 case SAVEt_MORTALIZESV:
821 ptr = SSPOPPTR;
ad64d0ec 822 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 823 break;
8990e307
LW
824 case SAVEt_FREEOP:
825 ptr = SSPOPPTR;
f3548bdc 826 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
827 op_free((OP*)ptr);
828 break;
829 case SAVEt_FREEPV:
830 ptr = SSPOPPTR;
1df70142 831 Safefree(ptr);
8990e307
LW
832 break;
833 case SAVEt_CLEARSV:
3280af22 834 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 835 sv = *(SV**)ptr;
dd2155a4
DM
836
837 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
838 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
839 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
840 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
841 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
842 ));
843
bc44cdaf
GS
844 /* Can clear pad variable in place? */
845 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
846 /*
847 * if a my variable that was made readonly is going out of
848 * scope, we want to remove the readonlyness so that it can
849 * go out of scope quietly
8aacddc1 850 */
a26e96df 851 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
852 SvREADONLY_off(sv);
853
6fc92669 854 if (SvTHINKFIRST(sv))
840a7b70 855 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
856 if (SvMAGICAL(sv))
857 mg_free(sv);
8990e307
LW
858
859 switch (SvTYPE(sv)) {
860 case SVt_NULL:
861 break;
862 case SVt_PVAV:
502c6561 863 av_clear(MUTABLE_AV(sv));
8990e307
LW
864 break;
865 case SVt_PVHV:
85fbaab2 866 hv_clear(MUTABLE_HV(sv));
8990e307
LW
867 break;
868 case SVt_PVCV:
cea2e8a9 869 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 870 default:
0c34ef67 871 SvOK_off(sv);
8990e307
LW
872 break;
873 }
d9d18af6 874 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
875 }
876 else { /* Someone has a claim on this, so abandon it. */
35a4481c 877 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 878 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
879 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
880 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 881 default: *(SV**)ptr = newSV(0); break;
8990e307 882 }
53868620 883 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
884 /* preserve pad nature, but also mark as not live
885 * for any closure capturing */
2740392c 886 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
887 }
888 break;
889 case SAVEt_DELETE:
890 ptr = SSPOPPTR;
85fbaab2 891 hv = MUTABLE_HV(ptr);
35d4f826 892 i = SSPOPINT;
8990e307 893 ptr = SSPOPPTR;
35d4f826 894 (void)hv_delete(hv, (char*)ptr, i, G_DISCARD);
4e4c362e 895 SvREFCNT_dec(hv);
8aacddc1 896 Safefree(ptr);
8990e307 897 break;
c68ec7a9
VP
898 case SAVEt_ADELETE:
899 ptr = SSPOPPTR;
900 av = MUTABLE_AV(ptr);
901 i = SSPOPINT;
902 (void)av_delete(av, i, G_DISCARD);
903 SvREFCNT_dec(av);
904 break;
146174a9
CB
905 case SAVEt_DESTRUCTOR_X:
906 ptr = SSPOPPTR;
acfe0abc 907 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
908 break;
909 case SAVEt_REGCONTEXT:
455ece5e 910 case SAVEt_ALLOC:
161b7d16 911 i = SSPOPINT;
3280af22 912 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 913 break;
55497cff 914 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 915 i = SSPOPINT;
3280af22 916 PL_stack_sp = PL_stack_base + i;
55497cff 917 break;
ea8d6ae1
DB
918 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
919 i = SSPOPINT;
920 cxstack[i].blk_oldsp = SSPOPINT;
921 break;
161b7d16 922 case SAVEt_AELEM: /* array element */
ad64d0ec 923 value = MUTABLE_SV(SSPOPPTR);
161b7d16 924 i = SSPOPINT;
502c6561 925 av = MUTABLE_AV(SSPOPPTR);
658aef79 926 ptr = av_fetch(av,i,1);
5dd42e15
DM
927 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
928 SvREFCNT_dec(value);
4e4c362e
GS
929 if (ptr) {
930 sv = *(SV**)ptr;
3280af22 931 if (sv && sv != &PL_sv_undef) {
ad64d0ec 932 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 933 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
934 goto restore_sv;
935 }
936 }
937 SvREFCNT_dec(av);
938 SvREFCNT_dec(value);
939 break;
161b7d16 940 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
941 value = MUTABLE_SV(SSPOPPTR);
942 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 943 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 944 ptr = hv_fetch_ent(hv, sv, 1, 0);
fd1b367e 945 SvREFCNT_dec(sv);
4e4c362e 946 if (ptr) {
35a4481c 947 const SV * const oval = HeVAL((HE*)ptr);
3280af22 948 if (oval && oval != &PL_sv_undef) {
4e4c362e 949 ptr = &HeVAL((HE*)ptr);
ad64d0ec 950 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 951 SvREFCNT_inc_void(*(SV**)ptr);
502c6561 952 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
953 goto restore_sv;
954 }
955 }
956 SvREFCNT_dec(hv);
4e4c362e
GS
957 SvREFCNT_dec(value);
958 break;
462e5cf6 959 case SAVEt_OP:
533c011a 960 PL_op = (OP*)SSPOPPTR;
462e5cf6 961 break;
25eaa213 962 case SAVEt_HINTS:
045ac317 963 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 964 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
965 GvHV(PL_hintgv) = NULL;
966 }
c28fe1ec
NC
967 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
968 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 969 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 970 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 971 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 972 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
973 assert(GvHV(PL_hintgv));
974 } else if (!GvHV(PL_hintgv)) {
975 /* Need to add a new one manually, else gv_fetchpv() can
976 add one in this code:
977
978 if (SvTYPE(gv) == SVt_PVGV) {
979 if (add) {
980 GvMULTI_on(gv);
981 gv_init_sv(gv, sv_type);
982 if (*name=='!' && sv_type == SVt_PVHV && len==1)
983 require_errno(gv);
984 }
985 return gv;
986 }
987
988 and it won't have the magic set. */
989
990 HV *const hv = newHV();
991 hv_magic(hv, NULL, PERL_MAGIC_hints);
992 GvHV(PL_hintgv) = hv;
dfa41748 993 }
5b9c0671 994 assert(GvHV(PL_hintgv));
b3ac6de7 995 break;
cb50131a 996 case SAVEt_COMPPAD:
f3548bdc 997 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 998 if (PL_comppad)
cb50131a
CB
999 PL_curpad = AvARRAY(PL_comppad);
1000 else
4608196e 1001 PL_curpad = NULL;
cb50131a 1002 break;
09edbca0 1003 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1004 {
35a4481c 1005 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 1006 SV **svp;
c3564e5c 1007 ptr = SSPOPPTR;
09edbca0
NC
1008 assert (ptr);
1009 svp = AvARRAY((PAD*)ptr) + off;
1010 /* This mortalizing used to be done by POPLOOP() via itersave.
1011 But as we have all the information here, we can do it here,
1012 save even having to have itersave in the struct. */
1013 sv_2mortal(*svp);
ad64d0ec 1014 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
1015 }
1016 break;
8b7059b1
DM
1017 case SAVEt_SAVESWITCHSTACK:
1018 {
1019 dSP;
502c6561
NC
1020 AV *const t = MUTABLE_AV(SSPOPPTR);
1021 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
1022 SWITCHSTACK(t,f);
1023 PL_curstackinfo->si_stack = f;
1024 }
1025 break;
14f338dc
DM
1026 case SAVEt_SET_SVFLAGS:
1027 {
35a4481c
AL
1028 const U32 val = (U32)SSPOPINT;
1029 const U32 mask = (U32)SSPOPINT;
ad64d0ec 1030 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
1031 SvFLAGS(sv) &= ~mask;
1032 SvFLAGS(sv) |= val;
1033 }
1034 break;
95e06916
NC
1035
1036 /* This would be a mathom, but Perl_save_svref() calls a static
1037 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 1038 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 1039 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
1040 ptr = SSPOPPTR;
1041 av = NULL; /* what to refcnt_dec */
1042 goto restore_sv;
95e06916
NC
1043
1044 /* These are only saved in mathoms.c */
1045 case SAVEt_NSTAB:
159b6efe 1046 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1047 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1048 break;
2053acbf
NC
1049 case SAVEt_LONG: /* long reference */
1050 ptr = SSPOPPTR;
1051 *(long*)ptr = (long)SSPOPLONG;
1052 break;
95e06916
NC
1053 case SAVEt_IV: /* IV reference */
1054 ptr = SSPOPPTR;
1055 *(IV*)ptr = (IV)SSPOPIV;
1056 break;
1057
2053acbf
NC
1058 case SAVEt_I16: /* I16 reference */
1059 ptr = SSPOPPTR;
1060 *(I16*)ptr = (I16)SSPOPINT;
1061 break;
1062 case SAVEt_I8: /* I8 reference */
1063 ptr = SSPOPPTR;
1064 *(I8*)ptr = (I8)SSPOPINT;
1065 break;
2053acbf
NC
1066 case SAVEt_DESTRUCTOR:
1067 ptr = SSPOPPTR;
1068 (*SSPOPDPTR)(ptr);
1069 break;
fc15ae8f
NC
1070 case SAVEt_COP_ARYBASE:
1071 ptr = SSPOPPTR;
1072 i = SSPOPINT;
1073 CopARYBASE_set((COP *)ptr, i);
1074 break;
68da3b2f
NC
1075 case SAVEt_COMPILE_WARNINGS:
1076 ptr = SSPOPPTR;
72dc9ed5 1077
68da3b2f
NC
1078 if (!specialWARN(PL_compiling.cop_warnings))
1079 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1080
10edeb5d 1081 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1082 break;
1ade1aa1
NC
1083 case SAVEt_RE_STATE:
1084 {
1085 const struct re_save_state *const state
1086 = (struct re_save_state *)
1087 (PL_savestack + PL_savestack_ix
1088 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1089 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1090
1ade1aa1
NC
1091 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1092 Safefree(PL_reg_start_tmp);
1ade1aa1 1093 }
1ade1aa1
NC
1094 if (PL_reg_poscache != state->re_state_reg_poscache) {
1095 Safefree(PL_reg_poscache);
1ade1aa1 1096 }
46ab3289 1097 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1098 }
1099 break;
7c197c94
DM
1100 case SAVEt_PARSER:
1101 ptr = SSPOPPTR;
1102 parser_free((yy_parser *) ptr);
1103 break;
79072805 1104 default:
cea2e8a9 1105 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1106 }
1107 }
302c0c93
NC
1108
1109 PL_tainted = was;
79072805 1110}
8990e307 1111
8990e307 1112void
864dbfa3 1113Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1114{
97aff369 1115 dVAR;
7918f24d
NC
1116
1117 PERL_ARGS_ASSERT_CX_DUMP;
1118
35ff7856 1119#ifdef DEBUGGING
22c35a8c 1120 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1121 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1122 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1123 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1124 PTR2UV(cx->blk_oldcop));
760ac839
LW
1125 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1126 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1127 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1128 PTR2UV(cx->blk_oldpm));
760ac839 1129 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1130 }
6b35e009 1131 switch (CxTYPE(cx)) {
8990e307
LW
1132 case CXt_NULL:
1133 case CXt_BLOCK:
1134 break;
146174a9 1135 case CXt_FORMAT:
f9c764c5
NC
1136 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1137 PTR2UV(cx->blk_format.cv));
1138 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1139 PTR2UV(cx->blk_format.gv));
1140 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1141 PTR2UV(cx->blk_format.dfoutgv));
1142 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1143 (int)CxHASARGS(cx));
f9c764c5
NC
1144 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1145 PTR2UV(cx->blk_format.retop));
146174a9 1146 break;
8990e307 1147 case CXt_SUB:
146174a9
CB
1148 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1149 PTR2UV(cx->blk_sub.cv));
760ac839 1150 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1151 (long)cx->blk_sub.olddepth);
760ac839 1152 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1153 (int)CxHASARGS(cx));
1154 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1155 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1156 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1157 break;
1158 case CXt_EVAL:
760ac839 1159 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1160 (long)CxOLD_IN_EVAL(cx));
760ac839 1161 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1162 PL_op_name[CxOLD_OP_TYPE(cx)],
1163 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1164 if (cx->blk_eval.old_namesv)
1165 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1166 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1167 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1168 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1169 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1170 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1171 break;
1172
c6fdafd0 1173 case CXt_LOOP_LAZYIV:
d01136d6 1174 case CXt_LOOP_LAZYSV:
3b719c58
NC
1175 case CXt_LOOP_FOR:
1176 case CXt_LOOP_PLAIN:
0cbdab38 1177 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1178 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1179 (long)cx->blk_loop.resetsp);
022eaa24
NC
1180 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1181 PTR2UV(cx->blk_loop.my_op));
146174a9 1182 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1183 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1184 /* XXX: not accurate for LAZYSV/IV */
146174a9 1185 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1186 PTR2UV(cx->blk_loop.state_u.ary.ary));
1187 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1188 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1189 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1190 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1191 break;
1192
1193 case CXt_SUBST:
760ac839 1194 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1195 (long)cx->sb_iters);
760ac839 1196 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1197 (long)cx->sb_maxiters);
35ef4773
GS
1198 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1199 (long)cx->sb_rflags);
760ac839 1200 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1201 (long)CxONCE(cx));
760ac839 1202 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1203 cx->sb_orig);
146174a9
CB
1204 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1205 PTR2UV(cx->sb_dstr));
1206 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1207 PTR2UV(cx->sb_targ));
1208 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1209 PTR2UV(cx->sb_s));
1210 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1211 PTR2UV(cx->sb_m));
1212 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1213 PTR2UV(cx->sb_strend));
1214 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1215 PTR2UV(cx->sb_rxres));
8990e307
LW
1216 break;
1217 }
65e66c80 1218#else
96a5add6 1219 PERL_UNUSED_CONTEXT;
65e66c80 1220 PERL_UNUSED_ARG(cx);
17c3b450 1221#endif /* DEBUGGING */
35ff7856 1222}
241d1a3b
NC
1223
1224/*
1225 * Local variables:
1226 * c-indentation-style: bsd
1227 * c-basic-offset: 4
1228 * indent-tabs-mode: t
1229 * End:
1230 *
37442d52
RGS
1231 * ex: set ts=8 sts=4 sw=4 noet:
1232 */