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Tests for commit 1375cf1cf2085f851bb176047d5e60248542f555
[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
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;
901017d6 170 SV * const osv = *sptr;
561b68a9 171 register SV * const sv = *sptr = newSV(0);
79072805 172
7918f24d
NC
173 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
174
a0d0e21e 175 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
a0d0e21e 176 if (SvGMAGICAL(osv)) {
35a4481c 177 const bool oldtainted = PL_tainted;
a0d0e21e 178 SvFLAGS(osv) |= (SvFLAGS(osv) &
c268c2a6 179 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 180 PL_tainted = oldtainted;
a0d0e21e 181 }
af7df257 182 mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0);
79072805
LW
183 }
184 return sv;
185}
186
dfcd3de5
NC
187void
188Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3
NC
189{
190 dVAR;
191 SSCHECK(3);
192 SSPUSHPTR(ptr1);
193 SSPUSHPTR(ptr2);
194 SSPUSHINT(type);
195}
196
7a4c00b4 197SV *
864dbfa3 198Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 199{
97aff369 200 dVAR;
fb4fc1fa 201 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
202
203 PERL_ARGS_ASSERT_SAVE_SCALAR;
204
27cc343c 205 PL_localizing = 1;
0cbee0a4 206 SvGETMAGIC(*sptr);
27cc343c 207 PL_localizing = 0;
e22024d3 208 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
af7df257 209 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
210}
211
f4dd75d9 212/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
213 * restore a global SV to its prior contents, freeing new value. */
214void
864dbfa3 215Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 216{
97aff369 217 dVAR;
7918f24d
NC
218
219 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
220
e22024d3 221 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
222}
223
f4dd75d9
GS
224/* Like save_pptr(), but also Safefree()s the new value if it is different
225 * from the old one. Can be used to restore a global char* to its prior
226 * contents, freeing new value. */
227void
228Perl_save_generic_pvref(pTHX_ char **str)
229{
97aff369 230 dVAR;
7918f24d
NC
231
232 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
233
e22024d3 234 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
235}
236
05ec9bb3
NIS
237/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
238 * Can be used to restore a shared global char* to its prior
239 * contents, freeing new value. */
240void
241Perl_save_shared_pvref(pTHX_ char **str)
242{
97aff369 243 dVAR;
7918f24d
NC
244
245 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
246
e22024d3 247 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
248}
249
14f338dc
DM
250/* set the SvFLAGS specified by mask to the values in val */
251
252void
253Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
254{
97aff369 255 dVAR;
7918f24d
NC
256
257 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
258
14f338dc
DM
259 SSCHECK(4);
260 SSPUSHPTR(sv);
261 SSPUSHINT(mask);
262 SSPUSHINT(val);
263 SSPUSHINT(SAVEt_SET_SVFLAGS);
264}
265
79072805 266void
864dbfa3 267Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 268{
97aff369 269 dVAR;
7918f24d
NC
270
271 PERL_ARGS_ASSERT_SAVE_GP;
272
e22024d3 273 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 274
5f05dabc 275 if (empty) {
12816592 276 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 277
fae75791 278 if (GvCVu(gv))
e1a479c5 279 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
280 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
281 gp->gp_io = newIO();
282 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
283 }
72651472
NC
284#ifdef PERL_DONT_CREATE_GVSV
285 if (gv == PL_errgv) {
286 /* We could scatter this logic everywhere by changing the
287 definition of ERRSV from GvSV() to GvSVn(), but it seems more
288 efficient to do this check once here. */
289 gp->gp_sv = newSV(0);
290 }
291#endif
12816592 292 GvGP(gv) = gp;
5f05dabc
PP
293 }
294 else {
44a8e56a 295 gp_ref(GvGP(gv));
5f05dabc
PP
296 GvINTRO_on(gv);
297 }
79072805 298}
79072805 299
79072805 300AV *
864dbfa3 301Perl_save_ary(pTHX_ GV *gv)
79072805 302{
97aff369 303 dVAR;
901017d6 304 AV * const oav = GvAVn(gv);
67a38de0 305 AV *av;
fb73857a 306
7918f24d
NC
307 PERL_ARGS_ASSERT_SAVE_ARY;
308
67a38de0
NIS
309 if (!AvREAL(oav) && AvREIFY(oav))
310 av_reify(oav);
e22024d3 311 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 312
4608196e 313 GvAV(gv) = NULL;
fb73857a 314 av = GvAVn(gv);
0cbee0a4 315 if (SvMAGIC(oav))
9711599e 316 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 317 return av;
79072805
LW
318}
319
320HV *
864dbfa3 321Perl_save_hash(pTHX_ GV *gv)
79072805 322{
97aff369 323 dVAR;
fb73857a
PP
324 HV *ohv, *hv;
325
7918f24d
NC
326 PERL_ARGS_ASSERT_SAVE_HASH;
327
e22024d3 328 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 329
4608196e 330 GvHV(gv) = NULL;
fb73857a 331 hv = GvHVn(gv);
0cbee0a4 332 if (SvMAGIC(ohv))
9711599e 333 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 334 return hv;
79072805
LW
335}
336
337void
864dbfa3 338Perl_save_item(pTHX_ register SV *item)
79072805 339{
97aff369 340 dVAR;
901017d6 341 register SV * const sv = newSVsv(item);
79072805 342
7918f24d
NC
343 PERL_ARGS_ASSERT_SAVE_ITEM;
344
e22024d3
NC
345 save_pushptrptr(item, /* remember the pointer */
346 sv, /* remember the value */
347 SAVEt_ITEM);
79072805
LW
348}
349
350void
1409bc06 351Perl_save_bool(pTHX_ bool *boolp)
79072805 352{
97aff369 353 dVAR;
7918f24d 354
1409bc06 355 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 356
79072805 357 SSCHECK(3);
1409bc06
NC
358 SSPUSHBOOL(*boolp);
359 SSPUSHPTR(boolp);
360 SSPUSHINT(SAVEt_BOOL);
361}
362
7623d426
NC
363void
364Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
365{
366 dVAR;
367 SSCHECK(3);
368 SSPUSHINT(i);
369 SSPUSHPTR(ptr);
370 SSPUSHINT(type);
79072805
LW
371}
372
373void
1409bc06 374Perl_save_int(pTHX_ int *intp)
9febdf04 375{
97aff369 376 dVAR;
7918f24d 377
1409bc06 378 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 379
1409bc06 380 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
381}
382
383void
58188858
RGS
384Perl_save_I8(pTHX_ I8 *bytep)
385{
386 dVAR;
7918f24d
NC
387
388 PERL_ARGS_ASSERT_SAVE_I8;
389
1409bc06 390 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
391}
392
393void
87a84751
JH
394Perl_save_I16(pTHX_ I16 *intp)
395{
396 dVAR;
7918f24d
NC
397
398 PERL_ARGS_ASSERT_SAVE_I16;
399
1409bc06 400 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
401}
402
403void
864dbfa3 404Perl_save_I32(pTHX_ I32 *intp)
79072805 405{
97aff369 406 dVAR;
7918f24d
NC
407
408 PERL_ARGS_ASSERT_SAVE_I32;
409
1409bc06 410 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
411}
412
85e6fe83
LW
413/* Cannot use save_sptr() to store a char* since the SV** cast will
414 * force word-alignment and we'll miss the pointer.
415 */
416void
864dbfa3 417Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 418{
97aff369 419 dVAR;
7918f24d
NC
420
421 PERL_ARGS_ASSERT_SAVE_PPTR;
422
e22024d3 423 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
424}
425
79072805 426void
146174a9
CB
427Perl_save_vptr(pTHX_ void *ptr)
428{
97aff369 429 dVAR;
7918f24d
NC
430
431 PERL_ARGS_ASSERT_SAVE_VPTR;
432
e22024d3 433 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
434}
435
436void
864dbfa3 437Perl_save_sptr(pTHX_ SV **sptr)
79072805 438{
97aff369 439 dVAR;
7918f24d
NC
440
441 PERL_ARGS_ASSERT_SAVE_SPTR;
442
e22024d3 443 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
444}
445
c3564e5c 446void
09edbca0 447Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 448{
97aff369 449 dVAR;
c3564e5c 450 SSCHECK(4);
f3548bdc 451 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 452 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 453 SSPUSHPTR(PL_comppad);
c3564e5c 454 SSPUSHLONG((long)off);
09edbca0 455 SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
456}
457
79072805 458void
864dbfa3 459Perl_save_hptr(pTHX_ HV **hptr)
79072805 460{
97aff369 461 dVAR;
7918f24d
NC
462
463 PERL_ARGS_ASSERT_SAVE_HPTR;
464
e22024d3 465 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
466}
467
468void
864dbfa3 469Perl_save_aptr(pTHX_ AV **aptr)
79072805 470{
97aff369 471 dVAR;
7918f24d
NC
472
473 PERL_ARGS_ASSERT_SAVE_APTR;
474
e22024d3 475 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
476}
477
478void
2fd8beea 479Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 480{
97aff369 481 dVAR;
8990e307 482 SSCHECK(2);
2fd8beea
NC
483 SSPUSHPTR(ptr);
484 SSPUSHINT(type);
8990e307
LW
485}
486
487void
864dbfa3 488Perl_save_clearsv(pTHX_ SV **svp)
8990e307 489{
97aff369 490 dVAR;
7918f24d
NC
491
492 PERL_ARGS_ASSERT_SAVE_CLEARSV;
493
f3548bdc 494 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 495 SSCHECK(2);
3280af22 496 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 497 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 498 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
499}
500
501void
864dbfa3 502Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 503{
97aff369 504 dVAR;
7918f24d
NC
505
506 PERL_ARGS_ASSERT_SAVE_DELETE;
507
85a721ca 508 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
509}
510
511void
c68ec7a9
VP
512Perl_save_adelete(pTHX_ AV *av, I32 key)
513{
514 dVAR;
515
516 PERL_ARGS_ASSERT_SAVE_ADELETE;
517
518 SvREFCNT_inc_void(av);
519 save_pushi32ptr(key, av, SAVEt_ADELETE);
520}
521
522void
12ab1f58
JH
523Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
524{
525 dVAR;
7918f24d
NC
526
527 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
528
12ab1f58
JH
529 SSCHECK(3);
530 SSPUSHDPTR(f);
531 SSPUSHPTR(p);
532 SSPUSHINT(SAVEt_DESTRUCTOR);
533}
534
535void
146174a9
CB
536Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
537{
97aff369 538 dVAR;
146174a9
CB
539 SSCHECK(3);
540 SSPUSHDXPTR(f);
541 SSPUSHPTR(p);
542 SSPUSHINT(SAVEt_DESTRUCTOR_X);
543}
544
545void
da8315f8
NC
546Perl_save_hints(pTHX)
547{
548 dVAR;
549 if (PL_compiling.cop_hints_hash) {
550 HINTS_REFCNT_LOCK;
551 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
552 HINTS_REFCNT_UNLOCK;
553 }
da8315f8 554 if (PL_hints & HINT_LOCALIZE_HH) {
be84297e
NC
555 save_pushptri32ptr(GvHV(PL_hintgv), PL_hints,
556 PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 557 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
be84297e
NC
558 } else {
559 save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 560 }
be84297e
NC
561}
562
563static void
564S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
565 const int type)
566{
567 SSCHECK(4);
568 SSPUSHPTR(ptr1);
569 SSPUSHINT(i);
570 SSPUSHPTR(ptr2);
571 SSPUSHINT(type);
da8315f8
NC
572}
573
574void
59413342 575Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
4e4c362e 576{
97aff369 577 dVAR;
bfc4de9f 578 SV *sv;
7918f24d
NC
579
580 PERL_ARGS_ASSERT_SAVE_AELEM;
581
0cbee0a4 582 SvGETMAGIC(*sptr);
be84297e
NC
583 save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr),
584 SAVEt_AELEM);
5dd42e15
DM
585 /* if it gets reified later, the restore will have the wrong refcnt */
586 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 587 SvREFCNT_inc_void(*sptr);
af7df257 588 save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
bfc4de9f
DM
589 sv = *sptr;
590 /* If we're localizing a tied array element, this new sv
591 * won't actually be stored in the array - so it won't get
592 * reaped when the localize ends. Ensure it gets reaped by
593 * mortifying it instead. DAPM */
594 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
595 sv_2mortal(sv);
4e4c362e
GS
596}
597
598void
af7df257 599Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 600{
97aff369 601 dVAR;
bfc4de9f 602 SV *sv;
7918f24d 603
af7df257 604 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 605
0cbee0a4 606 SvGETMAGIC(*sptr);
4e4c362e 607 SSCHECK(4);
b37c2d43 608 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 609 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
610 SSPUSHPTR(SvREFCNT_inc(*sptr));
611 SSPUSHINT(SAVEt_HELEM);
af7df257 612 save_scalar_at(sptr, flags);
bfc4de9f
DM
613 sv = *sptr;
614 /* If we're localizing a tied hash element, this new sv
615 * won't actually be stored in the hash - so it won't get
616 * reaped when the localize ends. Ensure it gets reaped by
617 * mortifying it instead. DAPM */
618 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
619 sv_2mortal(sv);
4e4c362e
GS
620}
621
2053acbf
NC
622SV*
623Perl_save_svref(pTHX_ SV **sptr)
624{
625 dVAR;
7918f24d
NC
626
627 PERL_ARGS_ASSERT_SAVE_SVREF;
628
2053acbf 629 SvGETMAGIC(*sptr);
e22024d3 630 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 631 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
632}
633
455ece5e 634I32
864dbfa3 635Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 636{
97aff369 637 dVAR;
35a4481c 638 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 639 - (char*)PL_savestack);
35a4481c 640 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 641
1bb4c835 642 SSGROW(elems + 2);
455ece5e
AD
643
644 PL_savestack_ix += elems;
645 SSPUSHINT(elems);
646 SSPUSHINT(SAVEt_ALLOC);
647 return start;
648}
649
462e5cf6 650void
864dbfa3 651Perl_leave_scope(pTHX_ I32 base)
79072805 652{
97aff369 653 dVAR;
79072805
LW
654 register SV *sv;
655 register SV *value;
656 register GV *gv;
657 register AV *av;
658 register HV *hv;
20454177 659 void* ptr;
f4dd75d9 660 register char* str;
161b7d16 661 I32 i;
302c0c93
NC
662 /* Localise the effects of the TAINT_NOT inside the loop. */
663 const bool was = PL_tainted;
79072805
LW
664
665 if (base < -1)
cea2e8a9 666 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 667 while (PL_savestack_ix > base) {
c6ae7647
NC
668 TAINT_NOT;
669
79072805
LW
670 switch (SSPOPINT) {
671 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
672 value = MUTABLE_SV(SSPOPPTR);
673 sv = MUTABLE_SV(SSPOPPTR);
79072805 674 sv_replace(sv,value);
3280af22 675 PL_localizing = 2;
79072805 676 SvSETMAGIC(sv);
3280af22 677 PL_localizing = 0;
79072805 678 break;
8aacddc1 679 case SAVEt_SV: /* scalar reference */
ad64d0ec 680 value = MUTABLE_SV(SSPOPPTR);
159b6efe 681 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 682 ptr = &GvSV(gv);
502c6561 683 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
684 restore_sv:
685 sv = *(SV**)ptr;
2053acbf
NC
686 *(SV**)ptr = value;
687 SvREFCNT_dec(sv);
688 PL_localizing = 2;
689 SvSETMAGIC(value);
690 PL_localizing = 0;
691 SvREFCNT_dec(value);
692 if (av) /* actually an av, hv or gv */
693 SvREFCNT_dec(av);
694 break;
8aacddc1 695 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 696 ptr = SSPOPPTR;
b03d03b0 697 str = (char*)SSPOPPTR;
f4dd75d9
GS
698 if (*(char**)ptr != str) {
699 Safefree(*(char**)ptr);
700 *(char**)ptr = str;
701 }
702 break;
05ec9bb3
NIS
703 case SAVEt_SHARED_PVREF: /* shared pv */
704 str = (char*)SSPOPPTR;
705 ptr = SSPOPPTR;
706 if (*(char**)ptr != str) {
5e54c26f 707#ifdef NETWARE
9ecbcc42 708 PerlMem_free(*(char**)ptr);
5e54c26f 709#else
05ec9bb3 710 PerlMemShared_free(*(char**)ptr);
5e54c26f 711#endif
05ec9bb3
NIS
712 *(char**)ptr = str;
713 }
714 break;
8aacddc1 715 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 716 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 717 ptr = SSPOPPTR;
f4dd75d9
GS
718 sv = *(SV**)ptr;
719 *(SV**)ptr = value;
720 SvREFCNT_dec(sv);
b9d12d37
GS
721 SvREFCNT_dec(value);
722 break;
8aacddc1 723 case SAVEt_AV: /* array reference */
502c6561 724 av = MUTABLE_AV(SSPOPPTR);
159b6efe 725 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 726 if (GvAV(gv)) {
c4a7531d 727 SvREFCNT_dec(GvAV(gv));
fb73857a 728 }
8aacddc1 729 GvAV(gv) = av;
fb73857a 730 if (SvMAGICAL(av)) {
3280af22 731 PL_localizing = 2;
ad64d0ec 732 SvSETMAGIC(MUTABLE_SV(av));
3280af22 733 PL_localizing = 0;
fb73857a 734 }
8aacddc1
NIS
735 break;
736 case SAVEt_HV: /* hash reference */
85fbaab2 737 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 738 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 739 if (GvHV(gv)) {
c4a7531d 740 SvREFCNT_dec(GvHV(gv));
fb73857a 741 }
8aacddc1 742 GvHV(gv) = hv;
fb73857a 743 if (SvMAGICAL(hv)) {
3280af22 744 PL_localizing = 2;
ad64d0ec 745 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 746 PL_localizing = 0;
fb73857a 747 }
8aacddc1 748 break;
79072805
LW
749 case SAVEt_INT: /* int reference */
750 ptr = SSPOPPTR;
751 *(int*)ptr = (int)SSPOPINT;
752 break;
9febdf04
RH
753 case SAVEt_BOOL: /* bool reference */
754 ptr = SSPOPPTR;
755 *(bool*)ptr = (bool)SSPOPBOOL;
756 break;
79072805
LW
757 case SAVEt_I32: /* I32 reference */
758 ptr = SSPOPPTR;
3235b7a3
NC
759#ifdef PERL_DEBUG_READONLY_OPS
760 {
761 const I32 val = SSPOPINT;
762 if (*(I32*)ptr != val)
763 *(I32*)ptr = val;
764 }
765#else
79072805 766 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 767#endif
79072805
LW
768 break;
769 case SAVEt_SPTR: /* SV* reference */
770 ptr = SSPOPPTR;
ad64d0ec 771 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 772 break;
146174a9 773 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
774 case SAVEt_PPTR: /* char* reference */
775 ptr = SSPOPPTR;
776 *(char**)ptr = (char*)SSPOPPTR;
777 break;
79072805
LW
778 case SAVEt_HPTR: /* HV* reference */
779 ptr = SSPOPPTR;
85fbaab2 780 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
781 break;
782 case SAVEt_APTR: /* AV* reference */
783 ptr = SSPOPPTR;
502c6561 784 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 785 break;
fb73857a 786 case SAVEt_GP: /* scalar reference */
79072805 787 ptr = SSPOPPTR;
159b6efe 788 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
789 gp_free(gv);
790 GvGP(gv) = (GP*)ptr;
dd69841b
BB
791 /* putting a method back into circulation ("local")*/
792 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
793 mro_method_changed_in(hv);
4633a7c4 794 SvREFCNT_dec(gv);
8aacddc1 795 break;
8990e307
LW
796 case SAVEt_FREESV:
797 ptr = SSPOPPTR;
ad64d0ec 798 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 799 break;
26d9b02f
JH
800 case SAVEt_MORTALIZESV:
801 ptr = SSPOPPTR;
ad64d0ec 802 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 803 break;
8990e307
LW
804 case SAVEt_FREEOP:
805 ptr = SSPOPPTR;
f3548bdc 806 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
807 op_free((OP*)ptr);
808 break;
809 case SAVEt_FREEPV:
810 ptr = SSPOPPTR;
1df70142 811 Safefree(ptr);
8990e307
LW
812 break;
813 case SAVEt_CLEARSV:
3280af22 814 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 815 sv = *(SV**)ptr;
dd2155a4
DM
816
817 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
818 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
819 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
820 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
821 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
822 ));
823
bc44cdaf
GS
824 /* Can clear pad variable in place? */
825 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
826 /*
827 * if a my variable that was made readonly is going out of
828 * scope, we want to remove the readonlyness so that it can
829 * go out of scope quietly
8aacddc1 830 */
a26e96df 831 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
832 SvREADONLY_off(sv);
833
6fc92669 834 if (SvTHINKFIRST(sv))
840a7b70 835 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
836 if (SvMAGICAL(sv))
837 mg_free(sv);
8990e307
LW
838
839 switch (SvTYPE(sv)) {
840 case SVt_NULL:
841 break;
842 case SVt_PVAV:
502c6561 843 av_clear(MUTABLE_AV(sv));
8990e307
LW
844 break;
845 case SVt_PVHV:
85fbaab2 846 hv_clear(MUTABLE_HV(sv));
8990e307
LW
847 break;
848 case SVt_PVCV:
cea2e8a9 849 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 850 default:
0c34ef67 851 SvOK_off(sv);
8990e307
LW
852 break;
853 }
d9d18af6 854 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
855 }
856 else { /* Someone has a claim on this, so abandon it. */
35a4481c 857 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 858 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
859 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
860 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 861 default: *(SV**)ptr = newSV(0); break;
8990e307 862 }
53868620 863 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
864 /* preserve pad nature, but also mark as not live
865 * for any closure capturing */
2740392c 866 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
867 }
868 break;
869 case SAVEt_DELETE:
870 ptr = SSPOPPTR;
85fbaab2 871 hv = MUTABLE_HV(ptr);
35d4f826 872 i = SSPOPINT;
8990e307 873 ptr = SSPOPPTR;
35d4f826 874 (void)hv_delete(hv, (char*)ptr, i, G_DISCARD);
4e4c362e 875 SvREFCNT_dec(hv);
8aacddc1 876 Safefree(ptr);
8990e307 877 break;
c68ec7a9
VP
878 case SAVEt_ADELETE:
879 ptr = SSPOPPTR;
880 av = MUTABLE_AV(ptr);
881 i = SSPOPINT;
882 (void)av_delete(av, i, G_DISCARD);
883 SvREFCNT_dec(av);
884 break;
146174a9
CB
885 case SAVEt_DESTRUCTOR_X:
886 ptr = SSPOPPTR;
acfe0abc 887 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
888 break;
889 case SAVEt_REGCONTEXT:
455ece5e 890 case SAVEt_ALLOC:
161b7d16 891 i = SSPOPINT;
3280af22 892 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 893 break;
55497cff 894 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 895 i = SSPOPINT;
3280af22 896 PL_stack_sp = PL_stack_base + i;
55497cff 897 break;
ea8d6ae1
DB
898 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
899 i = SSPOPINT;
900 cxstack[i].blk_oldsp = SSPOPINT;
901 break;
161b7d16 902 case SAVEt_AELEM: /* array element */
ad64d0ec 903 value = MUTABLE_SV(SSPOPPTR);
161b7d16 904 i = SSPOPINT;
502c6561 905 av = MUTABLE_AV(SSPOPPTR);
658aef79 906 ptr = av_fetch(av,i,1);
5dd42e15
DM
907 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
908 SvREFCNT_dec(value);
4e4c362e
GS
909 if (ptr) {
910 sv = *(SV**)ptr;
3280af22 911 if (sv && sv != &PL_sv_undef) {
ad64d0ec 912 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 913 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
914 goto restore_sv;
915 }
916 }
917 SvREFCNT_dec(av);
918 SvREFCNT_dec(value);
919 break;
161b7d16 920 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
921 value = MUTABLE_SV(SSPOPPTR);
922 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 923 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 924 ptr = hv_fetch_ent(hv, sv, 1, 0);
fd1b367e 925 SvREFCNT_dec(sv);
4e4c362e 926 if (ptr) {
35a4481c 927 const SV * const oval = HeVAL((HE*)ptr);
3280af22 928 if (oval && oval != &PL_sv_undef) {
4e4c362e 929 ptr = &HeVAL((HE*)ptr);
ad64d0ec 930 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 931 SvREFCNT_inc_void(*(SV**)ptr);
502c6561 932 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
933 goto restore_sv;
934 }
935 }
936 SvREFCNT_dec(hv);
4e4c362e
GS
937 SvREFCNT_dec(value);
938 break;
462e5cf6 939 case SAVEt_OP:
533c011a 940 PL_op = (OP*)SSPOPPTR;
462e5cf6 941 break;
25eaa213 942 case SAVEt_HINTS:
045ac317 943 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 944 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
945 GvHV(PL_hintgv) = NULL;
946 }
c28fe1ec
NC
947 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
948 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 949 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 950 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 951 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 952 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
953 assert(GvHV(PL_hintgv));
954 } else if (!GvHV(PL_hintgv)) {
955 /* Need to add a new one manually, else gv_fetchpv() can
956 add one in this code:
957
958 if (SvTYPE(gv) == SVt_PVGV) {
959 if (add) {
960 GvMULTI_on(gv);
961 gv_init_sv(gv, sv_type);
962 if (*name=='!' && sv_type == SVt_PVHV && len==1)
963 require_errno(gv);
964 }
965 return gv;
966 }
967
968 and it won't have the magic set. */
969
970 HV *const hv = newHV();
971 hv_magic(hv, NULL, PERL_MAGIC_hints);
972 GvHV(PL_hintgv) = hv;
dfa41748 973 }
5b9c0671 974 assert(GvHV(PL_hintgv));
b3ac6de7 975 break;
cb50131a 976 case SAVEt_COMPPAD:
f3548bdc 977 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 978 if (PL_comppad)
cb50131a
CB
979 PL_curpad = AvARRAY(PL_comppad);
980 else
4608196e 981 PL_curpad = NULL;
cb50131a 982 break;
09edbca0 983 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 984 {
35a4481c 985 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 986 SV **svp;
c3564e5c 987 ptr = SSPOPPTR;
09edbca0
NC
988 assert (ptr);
989 svp = AvARRAY((PAD*)ptr) + off;
990 /* This mortalizing used to be done by POPLOOP() via itersave.
991 But as we have all the information here, we can do it here,
992 save even having to have itersave in the struct. */
993 sv_2mortal(*svp);
ad64d0ec 994 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
995 }
996 break;
8b7059b1
DM
997 case SAVEt_SAVESWITCHSTACK:
998 {
999 dSP;
502c6561
NC
1000 AV *const t = MUTABLE_AV(SSPOPPTR);
1001 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
1002 SWITCHSTACK(t,f);
1003 PL_curstackinfo->si_stack = f;
1004 }
1005 break;
14f338dc
DM
1006 case SAVEt_SET_SVFLAGS:
1007 {
35a4481c
AL
1008 const U32 val = (U32)SSPOPINT;
1009 const U32 mask = (U32)SSPOPINT;
ad64d0ec 1010 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
1011 SvFLAGS(sv) &= ~mask;
1012 SvFLAGS(sv) |= val;
1013 }
1014 break;
95e06916
NC
1015
1016 /* This would be a mathom, but Perl_save_svref() calls a static
1017 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 1018 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 1019 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
1020 ptr = SSPOPPTR;
1021 av = NULL; /* what to refcnt_dec */
1022 goto restore_sv;
95e06916
NC
1023
1024 /* These are only saved in mathoms.c */
1025 case SAVEt_NSTAB:
159b6efe 1026 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1027 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1028 break;
2053acbf
NC
1029 case SAVEt_LONG: /* long reference */
1030 ptr = SSPOPPTR;
1031 *(long*)ptr = (long)SSPOPLONG;
1032 break;
95e06916
NC
1033 case SAVEt_IV: /* IV reference */
1034 ptr = SSPOPPTR;
1035 *(IV*)ptr = (IV)SSPOPIV;
1036 break;
1037
2053acbf
NC
1038 case SAVEt_I16: /* I16 reference */
1039 ptr = SSPOPPTR;
1040 *(I16*)ptr = (I16)SSPOPINT;
1041 break;
1042 case SAVEt_I8: /* I8 reference */
1043 ptr = SSPOPPTR;
1044 *(I8*)ptr = (I8)SSPOPINT;
1045 break;
2053acbf
NC
1046 case SAVEt_DESTRUCTOR:
1047 ptr = SSPOPPTR;
1048 (*SSPOPDPTR)(ptr);
1049 break;
fc15ae8f
NC
1050 case SAVEt_COP_ARYBASE:
1051 ptr = SSPOPPTR;
1052 i = SSPOPINT;
1053 CopARYBASE_set((COP *)ptr, i);
1054 break;
68da3b2f
NC
1055 case SAVEt_COMPILE_WARNINGS:
1056 ptr = SSPOPPTR;
72dc9ed5 1057
68da3b2f
NC
1058 if (!specialWARN(PL_compiling.cop_warnings))
1059 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1060
10edeb5d 1061 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1062 break;
1ade1aa1
NC
1063 case SAVEt_RE_STATE:
1064 {
1065 const struct re_save_state *const state
1066 = (struct re_save_state *)
1067 (PL_savestack + PL_savestack_ix
1068 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1069 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1070
1ade1aa1
NC
1071 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1072 Safefree(PL_reg_start_tmp);
1ade1aa1 1073 }
1ade1aa1
NC
1074 if (PL_reg_poscache != state->re_state_reg_poscache) {
1075 Safefree(PL_reg_poscache);
1ade1aa1 1076 }
46ab3289 1077 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1078 }
1079 break;
7c197c94
DM
1080 case SAVEt_PARSER:
1081 ptr = SSPOPPTR;
1082 parser_free((yy_parser *) ptr);
1083 break;
79072805 1084 default:
cea2e8a9 1085 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1086 }
1087 }
302c0c93
NC
1088
1089 PL_tainted = was;
79072805 1090}
8990e307 1091
8990e307 1092void
864dbfa3 1093Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1094{
97aff369 1095 dVAR;
7918f24d
NC
1096
1097 PERL_ARGS_ASSERT_CX_DUMP;
1098
35ff7856 1099#ifdef DEBUGGING
22c35a8c 1100 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1101 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1102 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1103 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_oldcop));
760ac839
LW
1105 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1106 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1107 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1108 PTR2UV(cx->blk_oldpm));
760ac839 1109 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1110 }
6b35e009 1111 switch (CxTYPE(cx)) {
8990e307
LW
1112 case CXt_NULL:
1113 case CXt_BLOCK:
1114 break;
146174a9 1115 case CXt_FORMAT:
f9c764c5
NC
1116 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1117 PTR2UV(cx->blk_format.cv));
1118 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1119 PTR2UV(cx->blk_format.gv));
1120 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1121 PTR2UV(cx->blk_format.dfoutgv));
1122 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1123 (int)CxHASARGS(cx));
f9c764c5
NC
1124 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1125 PTR2UV(cx->blk_format.retop));
146174a9 1126 break;
8990e307 1127 case CXt_SUB:
146174a9
CB
1128 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1129 PTR2UV(cx->blk_sub.cv));
760ac839 1130 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1131 (long)cx->blk_sub.olddepth);
760ac839 1132 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1133 (int)CxHASARGS(cx));
1134 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1135 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1136 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1137 break;
1138 case CXt_EVAL:
760ac839 1139 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1140 (long)CxOLD_IN_EVAL(cx));
760ac839 1141 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1142 PL_op_name[CxOLD_OP_TYPE(cx)],
1143 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1144 if (cx->blk_eval.old_namesv)
1145 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1146 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1147 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1148 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1149 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1150 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1151 break;
1152
c6fdafd0 1153 case CXt_LOOP_LAZYIV:
d01136d6 1154 case CXt_LOOP_LAZYSV:
3b719c58
NC
1155 case CXt_LOOP_FOR:
1156 case CXt_LOOP_PLAIN:
0cbdab38 1157 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1158 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1159 (long)cx->blk_loop.resetsp);
022eaa24
NC
1160 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1161 PTR2UV(cx->blk_loop.my_op));
146174a9 1162 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1163 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1164 /* XXX: not accurate for LAZYSV/IV */
146174a9 1165 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1166 PTR2UV(cx->blk_loop.state_u.ary.ary));
1167 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1168 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1169 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1170 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1171 break;
1172
1173 case CXt_SUBST:
760ac839 1174 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1175 (long)cx->sb_iters);
760ac839 1176 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1177 (long)cx->sb_maxiters);
35ef4773
GS
1178 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1179 (long)cx->sb_rflags);
760ac839 1180 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1181 (long)CxONCE(cx));
760ac839 1182 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1183 cx->sb_orig);
146174a9
CB
1184 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1185 PTR2UV(cx->sb_dstr));
1186 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1187 PTR2UV(cx->sb_targ));
1188 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1189 PTR2UV(cx->sb_s));
1190 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1191 PTR2UV(cx->sb_m));
1192 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1193 PTR2UV(cx->sb_strend));
1194 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1195 PTR2UV(cx->sb_rxres));
8990e307
LW
1196 break;
1197 }
65e66c80 1198#else
96a5add6 1199 PERL_UNUSED_CONTEXT;
65e66c80 1200 PERL_UNUSED_ARG(cx);
17c3b450 1201#endif /* DEBUGGING */
35ff7856 1202}
241d1a3b
NC
1203
1204/*
1205 * Local variables:
1206 * c-indentation-style: bsd
1207 * c-basic-offset: 4
1208 * indent-tabs-mode: t
1209 * End:
1210 *
37442d52
RGS
1211 * ex: set ts=8 sts=4 sw=4 noet:
1212 */