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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);
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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);
d343c3ef
GG
94#ifdef DEBUGGING
95 Renew(PL_scopestack_name, PL_scopestack_max, const char*);
520bb150 96#endif
79072805 97 }
d343c3ef
GG
98#ifdef DEBUGGING
99 PL_scopestack_name[PL_scopestack_ix] = "unknown";
100#endif
3280af22 101 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
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LW
102
103}
104
105void
864dbfa3 106Perl_pop_scope(pTHX)
79072805 107{
97aff369 108 dVAR;
35a4481c 109 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 110 LEAVE_SCOPE(oldsave);
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LW
111}
112
113void
864dbfa3 114Perl_markstack_grow(pTHX)
a0d0e21e 115{
97aff369 116 dVAR;
35a4481c
AL
117 const I32 oldmax = PL_markstack_max - PL_markstack;
118 const I32 newmax = GROW(oldmax);
a0d0e21e 119
3280af22
NIS
120 Renew(PL_markstack, newmax, I32);
121 PL_markstack_ptr = PL_markstack + oldmax;
122 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
123}
124
125void
864dbfa3 126Perl_savestack_grow(pTHX)
79072805 127{
97aff369 128 dVAR;
8aacddc1 129 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 130 Renew(PL_savestack, PL_savestack_max, ANY);
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LW
131}
132
4b3c1a47
AE
133void
134Perl_savestack_grow_cnt(pTHX_ I32 need)
135{
97aff369 136 dVAR;
4b3c1a47
AE
137 PL_savestack_max = PL_savestack_ix + need;
138 Renew(PL_savestack, PL_savestack_max, ANY);
139}
140
2ce36478
SM
141#undef GROW
142
79072805 143void
864dbfa3 144Perl_tmps_grow(pTHX_ I32 n)
677b06e3 145{
97aff369 146 dVAR;
677b06e3
GS
147#ifndef STRESS_REALLOC
148 if (n < 128)
149 n = (PL_tmps_max < 512) ? 128 : 512;
150#endif
151 PL_tmps_max = PL_tmps_ix + n + 1;
152 Renew(PL_tmps_stack, PL_tmps_max, SV*);
153}
154
155
156void
864dbfa3 157Perl_free_tmps(pTHX)
79072805 158{
97aff369 159 dVAR;
79072805 160 /* XXX should tmps_floor live in cxstack? */
35a4481c 161 const I32 myfloor = PL_tmps_floor;
3280af22 162 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
901017d6 163 SV* const sv = PL_tmps_stack[PL_tmps_ix];
a0714e2c 164 PL_tmps_stack[PL_tmps_ix--] = NULL;
8aacddc1 165 if (sv && sv != &PL_sv_undef) {
463ee0b2 166 SvTEMP_off(sv);
8990e307 167 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 168 }
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LW
169 }
170}
171
76e3520e 172STATIC SV *
af7df257 173S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 174{
97aff369 175 dVAR;
75d34a09
VP
176 SV * osv;
177 register SV *sv;
79072805 178
7918f24d
NC
179 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
180
75d34a09
VP
181 osv = *sptr;
182 sv = (flags & SAVEf_KEEPOLDELEM) ? osv : (*sptr = newSV(0));
183
a0d0e21e 184 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
a0d0e21e 185 if (SvGMAGICAL(osv)) {
35a4481c 186 const bool oldtainted = PL_tainted;
a0d0e21e 187 SvFLAGS(osv) |= (SvFLAGS(osv) &
c268c2a6 188 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 189 PL_tainted = oldtainted;
a0d0e21e 190 }
75d34a09
VP
191 if (!(flags & SAVEf_KEEPOLDELEM))
192 mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0);
79072805 193 }
75d34a09 194
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LW
195 return sv;
196}
197
dfcd3de5
NC
198void
199Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3
NC
200{
201 dVAR;
202 SSCHECK(3);
203 SSPUSHPTR(ptr1);
204 SSPUSHPTR(ptr2);
205 SSPUSHINT(type);
206}
207
7a4c00b4 208SV *
864dbfa3 209Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 210{
97aff369 211 dVAR;
fb4fc1fa 212 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
213
214 PERL_ARGS_ASSERT_SAVE_SCALAR;
215
27cc343c 216 PL_localizing = 1;
0cbee0a4 217 SvGETMAGIC(*sptr);
27cc343c 218 PL_localizing = 0;
e22024d3 219 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
af7df257 220 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
221}
222
f4dd75d9 223/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
224 * restore a global SV to its prior contents, freeing new value. */
225void
864dbfa3 226Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 227{
97aff369 228 dVAR;
7918f24d
NC
229
230 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
231
e22024d3 232 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
233}
234
f4dd75d9
GS
235/* Like save_pptr(), but also Safefree()s the new value if it is different
236 * from the old one. Can be used to restore a global char* to its prior
237 * contents, freeing new value. */
238void
239Perl_save_generic_pvref(pTHX_ char **str)
240{
97aff369 241 dVAR;
7918f24d
NC
242
243 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
244
e22024d3 245 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
246}
247
05ec9bb3
NIS
248/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
249 * Can be used to restore a shared global char* to its prior
250 * contents, freeing new value. */
251void
252Perl_save_shared_pvref(pTHX_ char **str)
253{
97aff369 254 dVAR;
7918f24d
NC
255
256 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
257
e22024d3 258 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
259}
260
14f338dc
DM
261/* set the SvFLAGS specified by mask to the values in val */
262
263void
264Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
265{
97aff369 266 dVAR;
7918f24d
NC
267
268 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
269
14f338dc
DM
270 SSCHECK(4);
271 SSPUSHPTR(sv);
272 SSPUSHINT(mask);
273 SSPUSHINT(val);
274 SSPUSHINT(SAVEt_SET_SVFLAGS);
275}
276
79072805 277void
864dbfa3 278Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 279{
97aff369 280 dVAR;
7918f24d
NC
281
282 PERL_ARGS_ASSERT_SAVE_GP;
283
e22024d3 284 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 285
5f05dabc 286 if (empty) {
12816592 287 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 288
fae75791 289 if (GvCVu(gv))
e1a479c5 290 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
291 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
292 gp->gp_io = newIO();
293 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
294 }
72651472
NC
295#ifdef PERL_DONT_CREATE_GVSV
296 if (gv == PL_errgv) {
297 /* We could scatter this logic everywhere by changing the
298 definition of ERRSV from GvSV() to GvSVn(), but it seems more
299 efficient to do this check once here. */
300 gp->gp_sv = newSV(0);
301 }
302#endif
12816592 303 GvGP(gv) = gp;
5f05dabc
PP
304 }
305 else {
44a8e56a 306 gp_ref(GvGP(gv));
5f05dabc
PP
307 GvINTRO_on(gv);
308 }
79072805 309}
79072805 310
79072805 311AV *
864dbfa3 312Perl_save_ary(pTHX_ GV *gv)
79072805 313{
97aff369 314 dVAR;
901017d6 315 AV * const oav = GvAVn(gv);
67a38de0 316 AV *av;
fb73857a 317
7918f24d
NC
318 PERL_ARGS_ASSERT_SAVE_ARY;
319
67a38de0
NIS
320 if (!AvREAL(oav) && AvREIFY(oav))
321 av_reify(oav);
e22024d3 322 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 323
4608196e 324 GvAV(gv) = NULL;
fb73857a 325 av = GvAVn(gv);
0cbee0a4 326 if (SvMAGIC(oav))
9711599e 327 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 328 return av;
79072805
LW
329}
330
331HV *
864dbfa3 332Perl_save_hash(pTHX_ GV *gv)
79072805 333{
97aff369 334 dVAR;
fb73857a
PP
335 HV *ohv, *hv;
336
7918f24d
NC
337 PERL_ARGS_ASSERT_SAVE_HASH;
338
e22024d3 339 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 340
4608196e 341 GvHV(gv) = NULL;
fb73857a 342 hv = GvHVn(gv);
0cbee0a4 343 if (SvMAGIC(ohv))
9711599e 344 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 345 return hv;
79072805
LW
346}
347
348void
864dbfa3 349Perl_save_item(pTHX_ register SV *item)
79072805 350{
97aff369 351 dVAR;
901017d6 352 register SV * const sv = newSVsv(item);
79072805 353
7918f24d
NC
354 PERL_ARGS_ASSERT_SAVE_ITEM;
355
e22024d3
NC
356 save_pushptrptr(item, /* remember the pointer */
357 sv, /* remember the value */
358 SAVEt_ITEM);
79072805
LW
359}
360
361void
1409bc06 362Perl_save_bool(pTHX_ bool *boolp)
79072805 363{
97aff369 364 dVAR;
7918f24d 365
1409bc06 366 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 367
79072805 368 SSCHECK(3);
1409bc06
NC
369 SSPUSHBOOL(*boolp);
370 SSPUSHPTR(boolp);
371 SSPUSHINT(SAVEt_BOOL);
372}
373
7623d426
NC
374void
375Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
376{
377 dVAR;
378 SSCHECK(3);
379 SSPUSHINT(i);
380 SSPUSHPTR(ptr);
381 SSPUSHINT(type);
79072805
LW
382}
383
384void
1409bc06 385Perl_save_int(pTHX_ int *intp)
9febdf04 386{
97aff369 387 dVAR;
7918f24d 388
1409bc06 389 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 390
1409bc06 391 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
392}
393
394void
58188858
RGS
395Perl_save_I8(pTHX_ I8 *bytep)
396{
397 dVAR;
7918f24d
NC
398
399 PERL_ARGS_ASSERT_SAVE_I8;
400
1409bc06 401 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
402}
403
404void
87a84751
JH
405Perl_save_I16(pTHX_ I16 *intp)
406{
407 dVAR;
7918f24d
NC
408
409 PERL_ARGS_ASSERT_SAVE_I16;
410
1409bc06 411 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
412}
413
414void
864dbfa3 415Perl_save_I32(pTHX_ I32 *intp)
79072805 416{
97aff369 417 dVAR;
7918f24d
NC
418
419 PERL_ARGS_ASSERT_SAVE_I32;
420
1409bc06 421 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
422}
423
85e6fe83
LW
424/* Cannot use save_sptr() to store a char* since the SV** cast will
425 * force word-alignment and we'll miss the pointer.
426 */
427void
864dbfa3 428Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 429{
97aff369 430 dVAR;
7918f24d
NC
431
432 PERL_ARGS_ASSERT_SAVE_PPTR;
433
e22024d3 434 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
435}
436
79072805 437void
146174a9
CB
438Perl_save_vptr(pTHX_ void *ptr)
439{
97aff369 440 dVAR;
7918f24d
NC
441
442 PERL_ARGS_ASSERT_SAVE_VPTR;
443
e22024d3 444 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
445}
446
447void
864dbfa3 448Perl_save_sptr(pTHX_ SV **sptr)
79072805 449{
97aff369 450 dVAR;
7918f24d
NC
451
452 PERL_ARGS_ASSERT_SAVE_SPTR;
453
e22024d3 454 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
455}
456
c3564e5c 457void
09edbca0 458Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 459{
97aff369 460 dVAR;
c3564e5c 461 SSCHECK(4);
f3548bdc 462 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 463 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 464 SSPUSHPTR(PL_comppad);
c3564e5c 465 SSPUSHLONG((long)off);
09edbca0 466 SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
467}
468
79072805 469void
864dbfa3 470Perl_save_hptr(pTHX_ HV **hptr)
79072805 471{
97aff369 472 dVAR;
7918f24d
NC
473
474 PERL_ARGS_ASSERT_SAVE_HPTR;
475
e22024d3 476 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
477}
478
479void
864dbfa3 480Perl_save_aptr(pTHX_ AV **aptr)
79072805 481{
97aff369 482 dVAR;
7918f24d
NC
483
484 PERL_ARGS_ASSERT_SAVE_APTR;
485
e22024d3 486 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
487}
488
489void
2fd8beea 490Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 491{
97aff369 492 dVAR;
8990e307 493 SSCHECK(2);
2fd8beea
NC
494 SSPUSHPTR(ptr);
495 SSPUSHINT(type);
8990e307
LW
496}
497
498void
864dbfa3 499Perl_save_clearsv(pTHX_ SV **svp)
8990e307 500{
97aff369 501 dVAR;
7918f24d
NC
502
503 PERL_ARGS_ASSERT_SAVE_CLEARSV;
504
f3548bdc 505 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 506 SSCHECK(2);
3280af22 507 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 508 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 509 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
510}
511
512void
864dbfa3 513Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 514{
97aff369 515 dVAR;
7918f24d
NC
516
517 PERL_ARGS_ASSERT_SAVE_DELETE;
518
85a721ca 519 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
520}
521
522void
af097752
VP
523Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
524{
525 STRLEN len;
526 I32 klen;
527 const char *key;
528
529 PERL_ARGS_ASSERT_SAVE_HDELETE;
530
531 key = SvPV_const(keysv, len);
532 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
533 SvREFCNT_inc_simple_void_NN(hv);
534 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
535}
536
537void
c68ec7a9
VP
538Perl_save_adelete(pTHX_ AV *av, I32 key)
539{
540 dVAR;
541
542 PERL_ARGS_ASSERT_SAVE_ADELETE;
543
544 SvREFCNT_inc_void(av);
545 save_pushi32ptr(key, av, SAVEt_ADELETE);
546}
547
548void
12ab1f58
JH
549Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
550{
551 dVAR;
7918f24d
NC
552
553 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
554
12ab1f58
JH
555 SSCHECK(3);
556 SSPUSHDPTR(f);
557 SSPUSHPTR(p);
558 SSPUSHINT(SAVEt_DESTRUCTOR);
559}
560
561void
146174a9
CB
562Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
563{
97aff369 564 dVAR;
146174a9
CB
565 SSCHECK(3);
566 SSPUSHDXPTR(f);
567 SSPUSHPTR(p);
568 SSPUSHINT(SAVEt_DESTRUCTOR_X);
569}
570
571void
da8315f8
NC
572Perl_save_hints(pTHX)
573{
574 dVAR;
575 if (PL_compiling.cop_hints_hash) {
576 HINTS_REFCNT_LOCK;
577 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
578 HINTS_REFCNT_UNLOCK;
579 }
da8315f8 580 if (PL_hints & HINT_LOCALIZE_HH) {
be84297e
NC
581 save_pushptri32ptr(GvHV(PL_hintgv), PL_hints,
582 PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 583 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
be84297e
NC
584 } else {
585 save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 586 }
be84297e
NC
587}
588
589static void
590S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
591 const int type)
592{
593 SSCHECK(4);
594 SSPUSHPTR(ptr1);
595 SSPUSHINT(i);
596 SSPUSHPTR(ptr2);
597 SSPUSHINT(type);
da8315f8
NC
598}
599
600void
91d1c79f 601Perl_save_aelem_flags(pTHX_ AV *av, I32 idx, SV **sptr, const U32 flags)
4e4c362e 602{
97aff369 603 dVAR;
bfc4de9f 604 SV *sv;
7918f24d 605
91d1c79f 606 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 607
0cbee0a4 608 SvGETMAGIC(*sptr);
be84297e
NC
609 save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr),
610 SAVEt_AELEM);
5dd42e15
DM
611 /* if it gets reified later, the restore will have the wrong refcnt */
612 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 613 SvREFCNT_inc_void(*sptr);
91d1c79f 614 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
615 if (flags & SAVEf_KEEPOLDELEM)
616 return;
bfc4de9f
DM
617 sv = *sptr;
618 /* If we're localizing a tied array element, this new sv
619 * won't actually be stored in the array - so it won't get
620 * reaped when the localize ends. Ensure it gets reaped by
621 * mortifying it instead. DAPM */
daeb922a 622 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
bfc4de9f 623 sv_2mortal(sv);
4e4c362e
GS
624}
625
626void
af7df257 627Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 628{
97aff369 629 dVAR;
bfc4de9f 630 SV *sv;
7918f24d 631
af7df257 632 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 633
0cbee0a4 634 SvGETMAGIC(*sptr);
4e4c362e 635 SSCHECK(4);
b37c2d43 636 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 637 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
638 SSPUSHPTR(SvREFCNT_inc(*sptr));
639 SSPUSHINT(SAVEt_HELEM);
af7df257 640 save_scalar_at(sptr, flags);
75d34a09
VP
641 if (flags & SAVEf_KEEPOLDELEM)
642 return;
bfc4de9f
DM
643 sv = *sptr;
644 /* If we're localizing a tied hash element, this new sv
645 * won't actually be stored in the hash - so it won't get
646 * reaped when the localize ends. Ensure it gets reaped by
647 * mortifying it instead. DAPM */
daeb922a 648 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
bfc4de9f 649 sv_2mortal(sv);
4e4c362e
GS
650}
651
2053acbf
NC
652SV*
653Perl_save_svref(pTHX_ SV **sptr)
654{
655 dVAR;
7918f24d
NC
656
657 PERL_ARGS_ASSERT_SAVE_SVREF;
658
2053acbf 659 SvGETMAGIC(*sptr);
e22024d3 660 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 661 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
662}
663
455ece5e 664I32
864dbfa3 665Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 666{
97aff369 667 dVAR;
35a4481c 668 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 669 - (char*)PL_savestack);
35a4481c 670 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 671
1bb4c835 672 SSGROW(elems + 2);
455ece5e
AD
673
674 PL_savestack_ix += elems;
675 SSPUSHINT(elems);
676 SSPUSHINT(SAVEt_ALLOC);
677 return start;
678}
679
462e5cf6 680void
864dbfa3 681Perl_leave_scope(pTHX_ I32 base)
79072805 682{
97aff369 683 dVAR;
79072805
LW
684 register SV *sv;
685 register SV *value;
686 register GV *gv;
687 register AV *av;
688 register HV *hv;
20454177 689 void* ptr;
f4dd75d9 690 register char* str;
161b7d16 691 I32 i;
302c0c93
NC
692 /* Localise the effects of the TAINT_NOT inside the loop. */
693 const bool was = PL_tainted;
79072805
LW
694
695 if (base < -1)
cea2e8a9 696 Perl_croak(aTHX_ "panic: corrupt saved stack index");
1c98cc53
DM
697 DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
698 (long)PL_savestack_ix, (long)base));
3280af22 699 while (PL_savestack_ix > base) {
c6ae7647
NC
700 TAINT_NOT;
701
79072805
LW
702 switch (SSPOPINT) {
703 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
704 value = MUTABLE_SV(SSPOPPTR);
705 sv = MUTABLE_SV(SSPOPPTR);
79072805 706 sv_replace(sv,value);
3280af22 707 PL_localizing = 2;
79072805 708 SvSETMAGIC(sv);
3280af22 709 PL_localizing = 0;
79072805 710 break;
8aacddc1 711 case SAVEt_SV: /* scalar reference */
ad64d0ec 712 value = MUTABLE_SV(SSPOPPTR);
159b6efe 713 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 714 ptr = &GvSV(gv);
502c6561 715 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
716 restore_sv:
717 sv = *(SV**)ptr;
2053acbf
NC
718 *(SV**)ptr = value;
719 SvREFCNT_dec(sv);
720 PL_localizing = 2;
721 SvSETMAGIC(value);
722 PL_localizing = 0;
723 SvREFCNT_dec(value);
724 if (av) /* actually an av, hv or gv */
725 SvREFCNT_dec(av);
726 break;
8aacddc1 727 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 728 ptr = SSPOPPTR;
b03d03b0 729 str = (char*)SSPOPPTR;
f4dd75d9
GS
730 if (*(char**)ptr != str) {
731 Safefree(*(char**)ptr);
732 *(char**)ptr = str;
733 }
734 break;
05ec9bb3
NIS
735 case SAVEt_SHARED_PVREF: /* shared pv */
736 str = (char*)SSPOPPTR;
737 ptr = SSPOPPTR;
738 if (*(char**)ptr != str) {
5e54c26f 739#ifdef NETWARE
9ecbcc42 740 PerlMem_free(*(char**)ptr);
5e54c26f 741#else
05ec9bb3 742 PerlMemShared_free(*(char**)ptr);
5e54c26f 743#endif
05ec9bb3
NIS
744 *(char**)ptr = str;
745 }
746 break;
8aacddc1 747 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 748 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 749 ptr = SSPOPPTR;
f4dd75d9
GS
750 sv = *(SV**)ptr;
751 *(SV**)ptr = value;
752 SvREFCNT_dec(sv);
b9d12d37
GS
753 SvREFCNT_dec(value);
754 break;
8aacddc1 755 case SAVEt_AV: /* array reference */
502c6561 756 av = MUTABLE_AV(SSPOPPTR);
159b6efe 757 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 758 SvREFCNT_dec(GvAV(gv));
8aacddc1 759 GvAV(gv) = av;
fb73857a 760 if (SvMAGICAL(av)) {
3280af22 761 PL_localizing = 2;
ad64d0ec 762 SvSETMAGIC(MUTABLE_SV(av));
3280af22 763 PL_localizing = 0;
fb73857a 764 }
8aacddc1
NIS
765 break;
766 case SAVEt_HV: /* hash reference */
85fbaab2 767 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 768 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 769 SvREFCNT_dec(GvHV(gv));
8aacddc1 770 GvHV(gv) = hv;
fb73857a 771 if (SvMAGICAL(hv)) {
3280af22 772 PL_localizing = 2;
ad64d0ec 773 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 774 PL_localizing = 0;
fb73857a 775 }
8aacddc1 776 break;
79072805
LW
777 case SAVEt_INT: /* int reference */
778 ptr = SSPOPPTR;
779 *(int*)ptr = (int)SSPOPINT;
780 break;
9febdf04
RH
781 case SAVEt_BOOL: /* bool reference */
782 ptr = SSPOPPTR;
f2338a2e 783 *(bool*)ptr = cBOOL(SSPOPBOOL);
9febdf04 784 break;
79072805
LW
785 case SAVEt_I32: /* I32 reference */
786 ptr = SSPOPPTR;
3235b7a3
NC
787#ifdef PERL_DEBUG_READONLY_OPS
788 {
789 const I32 val = SSPOPINT;
790 if (*(I32*)ptr != val)
791 *(I32*)ptr = val;
792 }
793#else
79072805 794 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 795#endif
79072805
LW
796 break;
797 case SAVEt_SPTR: /* SV* reference */
798 ptr = SSPOPPTR;
ad64d0ec 799 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 800 break;
146174a9 801 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
802 case SAVEt_PPTR: /* char* reference */
803 ptr = SSPOPPTR;
804 *(char**)ptr = (char*)SSPOPPTR;
805 break;
79072805
LW
806 case SAVEt_HPTR: /* HV* reference */
807 ptr = SSPOPPTR;
85fbaab2 808 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
809 break;
810 case SAVEt_APTR: /* AV* reference */
811 ptr = SSPOPPTR;
502c6561 812 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 813 break;
fb73857a 814 case SAVEt_GP: /* scalar reference */
79072805 815 ptr = SSPOPPTR;
159b6efe 816 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
817 gp_free(gv);
818 GvGP(gv) = (GP*)ptr;
dd69841b
BB
819 /* putting a method back into circulation ("local")*/
820 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
821 mro_method_changed_in(hv);
4633a7c4 822 SvREFCNT_dec(gv);
8aacddc1 823 break;
8990e307
LW
824 case SAVEt_FREESV:
825 ptr = SSPOPPTR;
ad64d0ec 826 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 827 break;
26d9b02f
JH
828 case SAVEt_MORTALIZESV:
829 ptr = SSPOPPTR;
ad64d0ec 830 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 831 break;
8990e307
LW
832 case SAVEt_FREEOP:
833 ptr = SSPOPPTR;
f3548bdc 834 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
835 op_free((OP*)ptr);
836 break;
837 case SAVEt_FREEPV:
838 ptr = SSPOPPTR;
1df70142 839 Safefree(ptr);
8990e307
LW
840 break;
841 case SAVEt_CLEARSV:
3280af22 842 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 843 sv = *(SV**)ptr;
dd2155a4
DM
844
845 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
846 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
847 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
848 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
849 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
850 ));
851
bc44cdaf
GS
852 /* Can clear pad variable in place? */
853 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
854 /*
855 * if a my variable that was made readonly is going out of
856 * scope, we want to remove the readonlyness so that it can
857 * go out of scope quietly
8aacddc1 858 */
a26e96df 859 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
860 SvREADONLY_off(sv);
861
6fc92669 862 if (SvTHINKFIRST(sv))
840a7b70 863 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
864 if (SvMAGICAL(sv))
865 mg_free(sv);
8990e307
LW
866
867 switch (SvTYPE(sv)) {
868 case SVt_NULL:
869 break;
870 case SVt_PVAV:
502c6561 871 av_clear(MUTABLE_AV(sv));
8990e307
LW
872 break;
873 case SVt_PVHV:
85fbaab2 874 hv_clear(MUTABLE_HV(sv));
8990e307
LW
875 break;
876 case SVt_PVCV:
cea2e8a9 877 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 878 default:
0c34ef67 879 SvOK_off(sv);
8990e307
LW
880 break;
881 }
d9d18af6 882 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
883 }
884 else { /* Someone has a claim on this, so abandon it. */
35a4481c 885 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 886 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
887 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
888 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 889 default: *(SV**)ptr = newSV(0); break;
8990e307 890 }
53868620 891 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
892 /* preserve pad nature, but also mark as not live
893 * for any closure capturing */
2740392c 894 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
895 }
896 break;
897 case SAVEt_DELETE:
898 ptr = SSPOPPTR;
85fbaab2 899 hv = MUTABLE_HV(ptr);
35d4f826 900 i = SSPOPINT;
8990e307 901 ptr = SSPOPPTR;
35d4f826 902 (void)hv_delete(hv, (char*)ptr, i, G_DISCARD);
4e4c362e 903 SvREFCNT_dec(hv);
8aacddc1 904 Safefree(ptr);
8990e307 905 break;
c68ec7a9
VP
906 case SAVEt_ADELETE:
907 ptr = SSPOPPTR;
908 av = MUTABLE_AV(ptr);
909 i = SSPOPINT;
910 (void)av_delete(av, i, G_DISCARD);
911 SvREFCNT_dec(av);
912 break;
146174a9
CB
913 case SAVEt_DESTRUCTOR_X:
914 ptr = SSPOPPTR;
acfe0abc 915 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
916 break;
917 case SAVEt_REGCONTEXT:
455ece5e 918 case SAVEt_ALLOC:
161b7d16 919 i = SSPOPINT;
3280af22 920 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 921 break;
55497cff 922 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 923 i = SSPOPINT;
3280af22 924 PL_stack_sp = PL_stack_base + i;
55497cff 925 break;
ea8d6ae1
DB
926 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
927 i = SSPOPINT;
928 cxstack[i].blk_oldsp = SSPOPINT;
929 break;
161b7d16 930 case SAVEt_AELEM: /* array element */
ad64d0ec 931 value = MUTABLE_SV(SSPOPPTR);
161b7d16 932 i = SSPOPINT;
502c6561 933 av = MUTABLE_AV(SSPOPPTR);
658aef79 934 ptr = av_fetch(av,i,1);
5dd42e15
DM
935 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
936 SvREFCNT_dec(value);
4e4c362e
GS
937 if (ptr) {
938 sv = *(SV**)ptr;
3280af22 939 if (sv && sv != &PL_sv_undef) {
ad64d0ec 940 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 941 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
942 goto restore_sv;
943 }
944 }
945 SvREFCNT_dec(av);
946 SvREFCNT_dec(value);
947 break;
161b7d16 948 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
949 value = MUTABLE_SV(SSPOPPTR);
950 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 951 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 952 ptr = hv_fetch_ent(hv, sv, 1, 0);
fd1b367e 953 SvREFCNT_dec(sv);
4e4c362e 954 if (ptr) {
35a4481c 955 const SV * const oval = HeVAL((HE*)ptr);
3280af22 956 if (oval && oval != &PL_sv_undef) {
4e4c362e 957 ptr = &HeVAL((HE*)ptr);
ad64d0ec 958 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 959 SvREFCNT_inc_void(*(SV**)ptr);
502c6561 960 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
961 goto restore_sv;
962 }
963 }
964 SvREFCNT_dec(hv);
4e4c362e
GS
965 SvREFCNT_dec(value);
966 break;
462e5cf6 967 case SAVEt_OP:
533c011a 968 PL_op = (OP*)SSPOPPTR;
462e5cf6 969 break;
25eaa213 970 case SAVEt_HINTS:
045ac317 971 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 972 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
973 GvHV(PL_hintgv) = NULL;
974 }
c28fe1ec
NC
975 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
976 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 977 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 978 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 979 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 980 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
981 assert(GvHV(PL_hintgv));
982 } else if (!GvHV(PL_hintgv)) {
983 /* Need to add a new one manually, else gv_fetchpv() can
984 add one in this code:
985
986 if (SvTYPE(gv) == SVt_PVGV) {
987 if (add) {
988 GvMULTI_on(gv);
989 gv_init_sv(gv, sv_type);
990 if (*name=='!' && sv_type == SVt_PVHV && len==1)
991 require_errno(gv);
992 }
993 return gv;
994 }
995
996 and it won't have the magic set. */
997
998 HV *const hv = newHV();
999 hv_magic(hv, NULL, PERL_MAGIC_hints);
1000 GvHV(PL_hintgv) = hv;
dfa41748 1001 }
5b9c0671 1002 assert(GvHV(PL_hintgv));
b3ac6de7 1003 break;
cb50131a 1004 case SAVEt_COMPPAD:
f3548bdc 1005 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 1006 if (PL_comppad)
cb50131a
CB
1007 PL_curpad = AvARRAY(PL_comppad);
1008 else
4608196e 1009 PL_curpad = NULL;
cb50131a 1010 break;
09edbca0 1011 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1012 {
35a4481c 1013 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 1014 SV **svp;
c3564e5c 1015 ptr = SSPOPPTR;
09edbca0
NC
1016 assert (ptr);
1017 svp = AvARRAY((PAD*)ptr) + off;
1018 /* This mortalizing used to be done by POPLOOP() via itersave.
1019 But as we have all the information here, we can do it here,
1020 save even having to have itersave in the struct. */
1021 sv_2mortal(*svp);
ad64d0ec 1022 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
1023 }
1024 break;
8b7059b1
DM
1025 case SAVEt_SAVESWITCHSTACK:
1026 {
1027 dSP;
502c6561
NC
1028 AV *const t = MUTABLE_AV(SSPOPPTR);
1029 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
1030 SWITCHSTACK(t,f);
1031 PL_curstackinfo->si_stack = f;
1032 }
1033 break;
14f338dc
DM
1034 case SAVEt_SET_SVFLAGS:
1035 {
35a4481c
AL
1036 const U32 val = (U32)SSPOPINT;
1037 const U32 mask = (U32)SSPOPINT;
ad64d0ec 1038 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
1039 SvFLAGS(sv) &= ~mask;
1040 SvFLAGS(sv) |= val;
1041 }
1042 break;
95e06916
NC
1043
1044 /* This would be a mathom, but Perl_save_svref() calls a static
1045 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 1046 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 1047 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
1048 ptr = SSPOPPTR;
1049 av = NULL; /* what to refcnt_dec */
1050 goto restore_sv;
95e06916
NC
1051
1052 /* These are only saved in mathoms.c */
1053 case SAVEt_NSTAB:
159b6efe 1054 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1055 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1056 break;
2053acbf
NC
1057 case SAVEt_LONG: /* long reference */
1058 ptr = SSPOPPTR;
1059 *(long*)ptr = (long)SSPOPLONG;
1060 break;
95e06916
NC
1061 case SAVEt_IV: /* IV reference */
1062 ptr = SSPOPPTR;
1063 *(IV*)ptr = (IV)SSPOPIV;
1064 break;
1065
2053acbf
NC
1066 case SAVEt_I16: /* I16 reference */
1067 ptr = SSPOPPTR;
1068 *(I16*)ptr = (I16)SSPOPINT;
1069 break;
1070 case SAVEt_I8: /* I8 reference */
1071 ptr = SSPOPPTR;
1072 *(I8*)ptr = (I8)SSPOPINT;
1073 break;
2053acbf
NC
1074 case SAVEt_DESTRUCTOR:
1075 ptr = SSPOPPTR;
1076 (*SSPOPDPTR)(ptr);
1077 break;
fc15ae8f
NC
1078 case SAVEt_COP_ARYBASE:
1079 ptr = SSPOPPTR;
1080 i = SSPOPINT;
1081 CopARYBASE_set((COP *)ptr, i);
1082 break;
68da3b2f
NC
1083 case SAVEt_COMPILE_WARNINGS:
1084 ptr = SSPOPPTR;
72dc9ed5 1085
68da3b2f
NC
1086 if (!specialWARN(PL_compiling.cop_warnings))
1087 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1088
10edeb5d 1089 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1090 break;
1ade1aa1
NC
1091 case SAVEt_RE_STATE:
1092 {
1093 const struct re_save_state *const state
1094 = (struct re_save_state *)
1095 (PL_savestack + PL_savestack_ix
1096 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1097 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1098
1ade1aa1
NC
1099 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1100 Safefree(PL_reg_start_tmp);
1ade1aa1 1101 }
1ade1aa1
NC
1102 if (PL_reg_poscache != state->re_state_reg_poscache) {
1103 Safefree(PL_reg_poscache);
1ade1aa1 1104 }
46ab3289 1105 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1106 }
1107 break;
7c197c94
DM
1108 case SAVEt_PARSER:
1109 ptr = SSPOPPTR;
1110 parser_free((yy_parser *) ptr);
1111 break;
79072805 1112 default:
cea2e8a9 1113 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1114 }
1115 }
302c0c93
NC
1116
1117 PL_tainted = was;
f410a211
NC
1118
1119 PERL_ASYNC_CHECK();
79072805 1120}
8990e307 1121
8990e307 1122void
864dbfa3 1123Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1124{
97aff369 1125 dVAR;
7918f24d
NC
1126
1127 PERL_ARGS_ASSERT_CX_DUMP;
1128
35ff7856 1129#ifdef DEBUGGING
22c35a8c 1130 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1131 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1132 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1133 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1134 PTR2UV(cx->blk_oldcop));
760ac839
LW
1135 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1136 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1137 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1138 PTR2UV(cx->blk_oldpm));
760ac839 1139 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1140 }
6b35e009 1141 switch (CxTYPE(cx)) {
8990e307
LW
1142 case CXt_NULL:
1143 case CXt_BLOCK:
1144 break;
146174a9 1145 case CXt_FORMAT:
f9c764c5
NC
1146 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1147 PTR2UV(cx->blk_format.cv));
1148 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1149 PTR2UV(cx->blk_format.gv));
1150 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1151 PTR2UV(cx->blk_format.dfoutgv));
1152 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1153 (int)CxHASARGS(cx));
f9c764c5
NC
1154 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1155 PTR2UV(cx->blk_format.retop));
146174a9 1156 break;
8990e307 1157 case CXt_SUB:
146174a9
CB
1158 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1159 PTR2UV(cx->blk_sub.cv));
760ac839 1160 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1161 (long)cx->blk_sub.olddepth);
760ac839 1162 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1163 (int)CxHASARGS(cx));
1164 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1165 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1166 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1167 break;
1168 case CXt_EVAL:
760ac839 1169 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1170 (long)CxOLD_IN_EVAL(cx));
760ac839 1171 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1172 PL_op_name[CxOLD_OP_TYPE(cx)],
1173 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1174 if (cx->blk_eval.old_namesv)
1175 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1176 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1177 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1178 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1179 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1180 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1181 break;
1182
c6fdafd0 1183 case CXt_LOOP_LAZYIV:
d01136d6 1184 case CXt_LOOP_LAZYSV:
3b719c58
NC
1185 case CXt_LOOP_FOR:
1186 case CXt_LOOP_PLAIN:
0cbdab38 1187 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1188 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1189 (long)cx->blk_loop.resetsp);
022eaa24
NC
1190 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1191 PTR2UV(cx->blk_loop.my_op));
146174a9 1192 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1193 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1194 /* XXX: not accurate for LAZYSV/IV */
146174a9 1195 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1196 PTR2UV(cx->blk_loop.state_u.ary.ary));
1197 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1198 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1199 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1200 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1201 break;
1202
1203 case CXt_SUBST:
760ac839 1204 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1205 (long)cx->sb_iters);
760ac839 1206 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1207 (long)cx->sb_maxiters);
35ef4773
GS
1208 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1209 (long)cx->sb_rflags);
760ac839 1210 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1211 (long)CxONCE(cx));
760ac839 1212 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1213 cx->sb_orig);
146174a9
CB
1214 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1215 PTR2UV(cx->sb_dstr));
1216 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1217 PTR2UV(cx->sb_targ));
1218 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1219 PTR2UV(cx->sb_s));
1220 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1221 PTR2UV(cx->sb_m));
1222 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1223 PTR2UV(cx->sb_strend));
1224 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1225 PTR2UV(cx->sb_rxres));
8990e307
LW
1226 break;
1227 }
65e66c80 1228#else
96a5add6 1229 PERL_UNUSED_CONTEXT;
65e66c80 1230 PERL_UNUSED_ARG(cx);
17c3b450 1231#endif /* DEBUGGING */
35ff7856 1232}
241d1a3b
NC
1233
1234/*
1235 * Local variables:
1236 * c-indentation-style: bsd
1237 * c-basic-offset: 4
1238 * indent-tabs-mode: t
1239 * End:
1240 *
37442d52
RGS
1241 * ex: set ts=8 sts=4 sw=4 noet:
1242 */