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[perl5.git] / scope.c
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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);
79072805
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);
79072805
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 }
79072805
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
79072805
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);
c6bf6a65 205 SSPUSHUV(type);
e22024d3
NC
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);
c6bf6a65 274 SSPUSHUV(SAVEt_SET_SVFLAGS);
14f338dc
DM
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
b9e00b79
LRG
284 SSCHECK(4);
285 SSPUSHINT(SvFAKE(gv));
286 SSPUSHPTR(GvGP(gv));
287 SSPUSHPTR(SvREFCNT_inc(gv));
288 SSPUSHINT(SAVEt_GP);
289
290 /* Don't let the localized GV coerce into non-glob, otherwise we would
291 * not be able to restore GP upon leave from context if that happened */
292 SvFAKE_off(gv);
79072805 293
5f05dabc 294 if (empty) {
12816592 295 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 296
fae75791 297 if (GvCVu(gv))
e1a479c5 298 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
299 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
300 gp->gp_io = newIO();
301 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
302 }
72651472
NC
303#ifdef PERL_DONT_CREATE_GVSV
304 if (gv == PL_errgv) {
305 /* We could scatter this logic everywhere by changing the
306 definition of ERRSV from GvSV() to GvSVn(), but it seems more
307 efficient to do this check once here. */
308 gp->gp_sv = newSV(0);
309 }
310#endif
12816592 311 GvGP(gv) = gp;
5f05dabc
PP
312 }
313 else {
44a8e56a 314 gp_ref(GvGP(gv));
5f05dabc
PP
315 GvINTRO_on(gv);
316 }
79072805 317}
79072805 318
79072805 319AV *
864dbfa3 320Perl_save_ary(pTHX_ GV *gv)
79072805 321{
97aff369 322 dVAR;
901017d6 323 AV * const oav = GvAVn(gv);
67a38de0 324 AV *av;
fb73857a 325
7918f24d
NC
326 PERL_ARGS_ASSERT_SAVE_ARY;
327
67a38de0
NIS
328 if (!AvREAL(oav) && AvREIFY(oav))
329 av_reify(oav);
e22024d3 330 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 331
4608196e 332 GvAV(gv) = NULL;
fb73857a 333 av = GvAVn(gv);
0cbee0a4 334 if (SvMAGIC(oav))
9711599e 335 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 336 return av;
79072805
LW
337}
338
339HV *
864dbfa3 340Perl_save_hash(pTHX_ GV *gv)
79072805 341{
97aff369 342 dVAR;
fb73857a
PP
343 HV *ohv, *hv;
344
7918f24d
NC
345 PERL_ARGS_ASSERT_SAVE_HASH;
346
e22024d3 347 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 348
4608196e 349 GvHV(gv) = NULL;
fb73857a 350 hv = GvHVn(gv);
0cbee0a4 351 if (SvMAGIC(ohv))
9711599e 352 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 353 return hv;
79072805
LW
354}
355
356void
864dbfa3 357Perl_save_item(pTHX_ register SV *item)
79072805 358{
97aff369 359 dVAR;
901017d6 360 register SV * const sv = newSVsv(item);
79072805 361
7918f24d
NC
362 PERL_ARGS_ASSERT_SAVE_ITEM;
363
e22024d3
NC
364 save_pushptrptr(item, /* remember the pointer */
365 sv, /* remember the value */
366 SAVEt_ITEM);
79072805
LW
367}
368
369void
1409bc06 370Perl_save_bool(pTHX_ bool *boolp)
79072805 371{
97aff369 372 dVAR;
7918f24d 373
1409bc06 374 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 375
79072805 376 SSCHECK(3);
1409bc06
NC
377 SSPUSHBOOL(*boolp);
378 SSPUSHPTR(boolp);
c6bf6a65 379 SSPUSHUV(SAVEt_BOOL);
1409bc06
NC
380}
381
7623d426
NC
382void
383Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
384{
385 dVAR;
386 SSCHECK(3);
387 SSPUSHINT(i);
388 SSPUSHPTR(ptr);
c6bf6a65 389 SSPUSHUV(type);
79072805
LW
390}
391
392void
1409bc06 393Perl_save_int(pTHX_ int *intp)
9febdf04 394{
97aff369 395 dVAR;
7918f24d 396
1409bc06 397 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 398
1409bc06 399 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
400}
401
402void
58188858
RGS
403Perl_save_I8(pTHX_ I8 *bytep)
404{
405 dVAR;
7918f24d
NC
406
407 PERL_ARGS_ASSERT_SAVE_I8;
408
1409bc06 409 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
410}
411
412void
87a84751
JH
413Perl_save_I16(pTHX_ I16 *intp)
414{
415 dVAR;
7918f24d
NC
416
417 PERL_ARGS_ASSERT_SAVE_I16;
418
1409bc06 419 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
420}
421
422void
864dbfa3 423Perl_save_I32(pTHX_ I32 *intp)
79072805 424{
97aff369 425 dVAR;
7918f24d
NC
426
427 PERL_ARGS_ASSERT_SAVE_I32;
428
1409bc06 429 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
430}
431
85e6fe83
LW
432/* Cannot use save_sptr() to store a char* since the SV** cast will
433 * force word-alignment and we'll miss the pointer.
434 */
435void
864dbfa3 436Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 437{
97aff369 438 dVAR;
7918f24d
NC
439
440 PERL_ARGS_ASSERT_SAVE_PPTR;
441
e22024d3 442 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
443}
444
79072805 445void
146174a9
CB
446Perl_save_vptr(pTHX_ void *ptr)
447{
97aff369 448 dVAR;
7918f24d
NC
449
450 PERL_ARGS_ASSERT_SAVE_VPTR;
451
e22024d3 452 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
453}
454
455void
864dbfa3 456Perl_save_sptr(pTHX_ SV **sptr)
79072805 457{
97aff369 458 dVAR;
7918f24d
NC
459
460 PERL_ARGS_ASSERT_SAVE_SPTR;
461
e22024d3 462 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
463}
464
c3564e5c 465void
09edbca0 466Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 467{
97aff369 468 dVAR;
c3564e5c 469 SSCHECK(4);
f3548bdc 470 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 471 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 472 SSPUSHPTR(PL_comppad);
c3564e5c 473 SSPUSHLONG((long)off);
c6bf6a65 474 SSPUSHUV(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
475}
476
79072805 477void
864dbfa3 478Perl_save_hptr(pTHX_ HV **hptr)
79072805 479{
97aff369 480 dVAR;
7918f24d
NC
481
482 PERL_ARGS_ASSERT_SAVE_HPTR;
483
e22024d3 484 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
485}
486
487void
864dbfa3 488Perl_save_aptr(pTHX_ AV **aptr)
79072805 489{
97aff369 490 dVAR;
7918f24d
NC
491
492 PERL_ARGS_ASSERT_SAVE_APTR;
493
e22024d3 494 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
495}
496
497void
2fd8beea 498Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 499{
97aff369 500 dVAR;
8990e307 501 SSCHECK(2);
2fd8beea 502 SSPUSHPTR(ptr);
c6bf6a65 503 SSPUSHUV(type);
8990e307
LW
504}
505
506void
864dbfa3 507Perl_save_clearsv(pTHX_ SV **svp)
8990e307 508{
97aff369 509 dVAR;
7918f24d
NC
510
511 PERL_ARGS_ASSERT_SAVE_CLEARSV;
512
f3548bdc 513 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 514 SSCHECK(2);
3280af22 515 SSPUSHLONG((long)(svp-PL_curpad));
c6bf6a65 516 SSPUSHUV(SAVEt_CLEARSV);
d9d18af6 517 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
518}
519
520void
864dbfa3 521Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 522{
97aff369 523 dVAR;
7918f24d
NC
524
525 PERL_ARGS_ASSERT_SAVE_DELETE;
526
85a721ca 527 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
528}
529
530void
af097752
VP
531Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
532{
533 STRLEN len;
534 I32 klen;
535 const char *key;
536
537 PERL_ARGS_ASSERT_SAVE_HDELETE;
538
539 key = SvPV_const(keysv, len);
540 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
541 SvREFCNT_inc_simple_void_NN(hv);
542 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
543}
544
545void
c68ec7a9
VP
546Perl_save_adelete(pTHX_ AV *av, I32 key)
547{
548 dVAR;
549
550 PERL_ARGS_ASSERT_SAVE_ADELETE;
551
552 SvREFCNT_inc_void(av);
553 save_pushi32ptr(key, av, SAVEt_ADELETE);
554}
555
556void
12ab1f58
JH
557Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
558{
559 dVAR;
7918f24d
NC
560
561 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
562
12ab1f58
JH
563 SSCHECK(3);
564 SSPUSHDPTR(f);
565 SSPUSHPTR(p);
c6bf6a65 566 SSPUSHUV(SAVEt_DESTRUCTOR);
12ab1f58
JH
567}
568
569void
146174a9
CB
570Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
571{
97aff369 572 dVAR;
146174a9
CB
573 SSCHECK(3);
574 SSPUSHDXPTR(f);
575 SSPUSHPTR(p);
c6bf6a65 576 SSPUSHUV(SAVEt_DESTRUCTOR_X);
146174a9
CB
577}
578
579void
da8315f8
NC
580Perl_save_hints(pTHX)
581{
582 dVAR;
583 if (PL_compiling.cop_hints_hash) {
584 HINTS_REFCNT_LOCK;
585 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
586 HINTS_REFCNT_UNLOCK;
587 }
da8315f8 588 if (PL_hints & HINT_LOCALIZE_HH) {
be84297e
NC
589 save_pushptri32ptr(GvHV(PL_hintgv), PL_hints,
590 PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 591 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
be84297e
NC
592 } else {
593 save_pushi32ptr(PL_hints, PL_compiling.cop_hints_hash, SAVEt_HINTS);
da8315f8 594 }
be84297e
NC
595}
596
597static void
598S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
599 const int type)
600{
601 SSCHECK(4);
602 SSPUSHPTR(ptr1);
603 SSPUSHINT(i);
604 SSPUSHPTR(ptr2);
c6bf6a65 605 SSPUSHUV(type);
da8315f8
NC
606}
607
608void
91d1c79f 609Perl_save_aelem_flags(pTHX_ AV *av, I32 idx, SV **sptr, const U32 flags)
4e4c362e 610{
97aff369 611 dVAR;
bfc4de9f 612 SV *sv;
7918f24d 613
91d1c79f 614 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 615
0cbee0a4 616 SvGETMAGIC(*sptr);
be84297e
NC
617 save_pushptri32ptr(SvREFCNT_inc_simple(av), idx, SvREFCNT_inc(*sptr),
618 SAVEt_AELEM);
5dd42e15
DM
619 /* if it gets reified later, the restore will have the wrong refcnt */
620 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 621 SvREFCNT_inc_void(*sptr);
91d1c79f 622 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
623 if (flags & SAVEf_KEEPOLDELEM)
624 return;
bfc4de9f
DM
625 sv = *sptr;
626 /* If we're localizing a tied array element, this new sv
627 * won't actually be stored in the array - so it won't get
628 * reaped when the localize ends. Ensure it gets reaped by
629 * mortifying it instead. DAPM */
daeb922a 630 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
bfc4de9f 631 sv_2mortal(sv);
4e4c362e
GS
632}
633
634void
af7df257 635Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 636{
97aff369 637 dVAR;
bfc4de9f 638 SV *sv;
7918f24d 639
af7df257 640 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 641
0cbee0a4 642 SvGETMAGIC(*sptr);
4e4c362e 643 SSCHECK(4);
b37c2d43 644 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 645 SSPUSHPTR(newSVsv(key));
4e4c362e 646 SSPUSHPTR(SvREFCNT_inc(*sptr));
c6bf6a65 647 SSPUSHUV(SAVEt_HELEM);
af7df257 648 save_scalar_at(sptr, flags);
75d34a09
VP
649 if (flags & SAVEf_KEEPOLDELEM)
650 return;
bfc4de9f
DM
651 sv = *sptr;
652 /* If we're localizing a tied hash element, this new sv
653 * won't actually be stored in the hash - so it won't get
654 * reaped when the localize ends. Ensure it gets reaped by
655 * mortifying it instead. DAPM */
daeb922a 656 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
bfc4de9f 657 sv_2mortal(sv);
4e4c362e
GS
658}
659
2053acbf
NC
660SV*
661Perl_save_svref(pTHX_ SV **sptr)
662{
663 dVAR;
7918f24d
NC
664
665 PERL_ARGS_ASSERT_SAVE_SVREF;
666
2053acbf 667 SvGETMAGIC(*sptr);
e22024d3 668 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 669 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
670}
671
455ece5e 672I32
864dbfa3 673Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 674{
97aff369 675 dVAR;
35a4481c 676 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 677 - (char*)PL_savestack);
35a4481c 678 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 679
1bb4c835 680 SSGROW(elems + 2);
455ece5e
AD
681
682 PL_savestack_ix += elems;
683 SSPUSHINT(elems);
c6bf6a65 684 SSPUSHUV(SAVEt_ALLOC);
455ece5e
AD
685 return start;
686}
687
462e5cf6 688void
864dbfa3 689Perl_leave_scope(pTHX_ I32 base)
79072805 690{
97aff369 691 dVAR;
79072805
LW
692 register SV *sv;
693 register SV *value;
694 register GV *gv;
695 register AV *av;
696 register HV *hv;
20454177 697 void* ptr;
f4dd75d9 698 register char* str;
161b7d16 699 I32 i;
302c0c93
NC
700 /* Localise the effects of the TAINT_NOT inside the loop. */
701 const bool was = PL_tainted;
79072805
LW
702
703 if (base < -1)
cea2e8a9 704 Perl_croak(aTHX_ "panic: corrupt saved stack index");
1c98cc53
DM
705 DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
706 (long)PL_savestack_ix, (long)base));
3280af22 707 while (PL_savestack_ix > base) {
c6bf6a65
NC
708 UV uv = SSPOPUV;
709 const U8 type = (U8)uv & SAVE_MASK;
c6ae7647
NC
710 TAINT_NOT;
711
c6bf6a65 712 switch (type) {
79072805 713 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
714 value = MUTABLE_SV(SSPOPPTR);
715 sv = MUTABLE_SV(SSPOPPTR);
79072805 716 sv_replace(sv,value);
3280af22 717 PL_localizing = 2;
79072805 718 SvSETMAGIC(sv);
3280af22 719 PL_localizing = 0;
79072805 720 break;
8aacddc1 721 case SAVEt_SV: /* scalar reference */
ad64d0ec 722 value = MUTABLE_SV(SSPOPPTR);
159b6efe 723 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 724 ptr = &GvSV(gv);
502c6561 725 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
726 restore_sv:
727 sv = *(SV**)ptr;
2053acbf
NC
728 *(SV**)ptr = value;
729 SvREFCNT_dec(sv);
730 PL_localizing = 2;
731 SvSETMAGIC(value);
732 PL_localizing = 0;
733 SvREFCNT_dec(value);
734 if (av) /* actually an av, hv or gv */
735 SvREFCNT_dec(av);
736 break;
8aacddc1 737 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 738 ptr = SSPOPPTR;
b03d03b0 739 str = (char*)SSPOPPTR;
f4dd75d9
GS
740 if (*(char**)ptr != str) {
741 Safefree(*(char**)ptr);
742 *(char**)ptr = str;
743 }
744 break;
05ec9bb3
NIS
745 case SAVEt_SHARED_PVREF: /* shared pv */
746 str = (char*)SSPOPPTR;
747 ptr = SSPOPPTR;
748 if (*(char**)ptr != str) {
5e54c26f 749#ifdef NETWARE
9ecbcc42 750 PerlMem_free(*(char**)ptr);
5e54c26f 751#else
05ec9bb3 752 PerlMemShared_free(*(char**)ptr);
5e54c26f 753#endif
05ec9bb3
NIS
754 *(char**)ptr = str;
755 }
756 break;
8aacddc1 757 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 758 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 759 ptr = SSPOPPTR;
f4dd75d9
GS
760 sv = *(SV**)ptr;
761 *(SV**)ptr = value;
762 SvREFCNT_dec(sv);
b9d12d37
GS
763 SvREFCNT_dec(value);
764 break;
8aacddc1 765 case SAVEt_AV: /* array reference */
502c6561 766 av = MUTABLE_AV(SSPOPPTR);
159b6efe 767 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 768 SvREFCNT_dec(GvAV(gv));
8aacddc1 769 GvAV(gv) = av;
fb73857a 770 if (SvMAGICAL(av)) {
3280af22 771 PL_localizing = 2;
ad64d0ec 772 SvSETMAGIC(MUTABLE_SV(av));
3280af22 773 PL_localizing = 0;
fb73857a 774 }
8aacddc1
NIS
775 break;
776 case SAVEt_HV: /* hash reference */
85fbaab2 777 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 778 gv = MUTABLE_GV(SSPOPPTR);
ef8d46e8 779 SvREFCNT_dec(GvHV(gv));
8aacddc1 780 GvHV(gv) = hv;
fb73857a 781 if (SvMAGICAL(hv)) {
3280af22 782 PL_localizing = 2;
ad64d0ec 783 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 784 PL_localizing = 0;
fb73857a 785 }
8aacddc1 786 break;
79072805
LW
787 case SAVEt_INT: /* int reference */
788 ptr = SSPOPPTR;
789 *(int*)ptr = (int)SSPOPINT;
790 break;
9febdf04
RH
791 case SAVEt_BOOL: /* bool reference */
792 ptr = SSPOPPTR;
f2338a2e 793 *(bool*)ptr = cBOOL(SSPOPBOOL);
9febdf04 794 break;
79072805
LW
795 case SAVEt_I32: /* I32 reference */
796 ptr = SSPOPPTR;
3235b7a3
NC
797#ifdef PERL_DEBUG_READONLY_OPS
798 {
799 const I32 val = SSPOPINT;
800 if (*(I32*)ptr != val)
801 *(I32*)ptr = val;
802 }
803#else
79072805 804 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 805#endif
79072805
LW
806 break;
807 case SAVEt_SPTR: /* SV* reference */
808 ptr = SSPOPPTR;
ad64d0ec 809 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 810 break;
146174a9 811 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
812 case SAVEt_PPTR: /* char* reference */
813 ptr = SSPOPPTR;
814 *(char**)ptr = (char*)SSPOPPTR;
815 break;
79072805
LW
816 case SAVEt_HPTR: /* HV* reference */
817 ptr = SSPOPPTR;
85fbaab2 818 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
819 break;
820 case SAVEt_APTR: /* AV* reference */
821 ptr = SSPOPPTR;
502c6561 822 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 823 break;
fb73857a 824 case SAVEt_GP: /* scalar reference */
159b6efe 825 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1 826 gp_free(gv);
b9e00b79
LRG
827 GvGP(gv) = (GP*)SSPOPPTR;
828 if (SSPOPINT)
829 SvFAKE_on(gv);
dd69841b
BB
830 /* putting a method back into circulation ("local")*/
831 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
832 mro_method_changed_in(hv);
4633a7c4 833 SvREFCNT_dec(gv);
8aacddc1 834 break;
8990e307
LW
835 case SAVEt_FREESV:
836 ptr = SSPOPPTR;
ad64d0ec 837 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 838 break;
26d9b02f
JH
839 case SAVEt_MORTALIZESV:
840 ptr = SSPOPPTR;
ad64d0ec 841 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 842 break;
8990e307
LW
843 case SAVEt_FREEOP:
844 ptr = SSPOPPTR;
f3548bdc 845 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
846 op_free((OP*)ptr);
847 break;
848 case SAVEt_FREEPV:
849 ptr = SSPOPPTR;
1df70142 850 Safefree(ptr);
8990e307
LW
851 break;
852 case SAVEt_CLEARSV:
3280af22 853 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 854 sv = *(SV**)ptr;
dd2155a4
DM
855
856 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
857 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
858 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
859 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
860 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
861 ));
862
bc44cdaf
GS
863 /* Can clear pad variable in place? */
864 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
865 /*
866 * if a my variable that was made readonly is going out of
867 * scope, we want to remove the readonlyness so that it can
868 * go out of scope quietly
8aacddc1 869 */
a26e96df 870 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
871 SvREADONLY_off(sv);
872
6fc92669 873 if (SvTHINKFIRST(sv))
840a7b70 874 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
875 if (SvMAGICAL(sv))
876 mg_free(sv);
8990e307
LW
877
878 switch (SvTYPE(sv)) {
879 case SVt_NULL:
880 break;
881 case SVt_PVAV:
502c6561 882 av_clear(MUTABLE_AV(sv));
8990e307
LW
883 break;
884 case SVt_PVHV:
85fbaab2 885 hv_clear(MUTABLE_HV(sv));
8990e307
LW
886 break;
887 case SVt_PVCV:
cea2e8a9 888 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 889 default:
0c34ef67 890 SvOK_off(sv);
8990e307
LW
891 break;
892 }
d9d18af6 893 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
894 }
895 else { /* Someone has a claim on this, so abandon it. */
35a4481c 896 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 897 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
898 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
899 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 900 default: *(SV**)ptr = newSV(0); break;
8990e307 901 }
53868620 902 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
903 /* preserve pad nature, but also mark as not live
904 * for any closure capturing */
2740392c 905 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
906 }
907 break;
908 case SAVEt_DELETE:
909 ptr = SSPOPPTR;
85fbaab2 910 hv = MUTABLE_HV(ptr);
35d4f826 911 i = SSPOPINT;
8990e307 912 ptr = SSPOPPTR;
35d4f826 913 (void)hv_delete(hv, (char*)ptr, i, G_DISCARD);
4e4c362e 914 SvREFCNT_dec(hv);
8aacddc1 915 Safefree(ptr);
8990e307 916 break;
c68ec7a9
VP
917 case SAVEt_ADELETE:
918 ptr = SSPOPPTR;
919 av = MUTABLE_AV(ptr);
920 i = SSPOPINT;
921 (void)av_delete(av, i, G_DISCARD);
922 SvREFCNT_dec(av);
923 break;
146174a9
CB
924 case SAVEt_DESTRUCTOR_X:
925 ptr = SSPOPPTR;
acfe0abc 926 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
927 break;
928 case SAVEt_REGCONTEXT:
455ece5e 929 case SAVEt_ALLOC:
161b7d16 930 i = SSPOPINT;
3280af22 931 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 932 break;
55497cff 933 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 934 i = SSPOPINT;
3280af22 935 PL_stack_sp = PL_stack_base + i;
55497cff 936 break;
ea8d6ae1
DB
937 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
938 i = SSPOPINT;
939 cxstack[i].blk_oldsp = SSPOPINT;
940 break;
161b7d16 941 case SAVEt_AELEM: /* array element */
ad64d0ec 942 value = MUTABLE_SV(SSPOPPTR);
161b7d16 943 i = SSPOPINT;
502c6561 944 av = MUTABLE_AV(SSPOPPTR);
658aef79 945 ptr = av_fetch(av,i,1);
5dd42e15
DM
946 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
947 SvREFCNT_dec(value);
4e4c362e
GS
948 if (ptr) {
949 sv = *(SV**)ptr;
3280af22 950 if (sv && sv != &PL_sv_undef) {
ad64d0ec 951 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 952 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
953 goto restore_sv;
954 }
955 }
956 SvREFCNT_dec(av);
957 SvREFCNT_dec(value);
958 break;
161b7d16 959 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
960 value = MUTABLE_SV(SSPOPPTR);
961 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 962 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 963 ptr = hv_fetch_ent(hv, sv, 1, 0);
fd1b367e 964 SvREFCNT_dec(sv);
4e4c362e 965 if (ptr) {
35a4481c 966 const SV * const oval = HeVAL((HE*)ptr);
3280af22 967 if (oval && oval != &PL_sv_undef) {
4e4c362e 968 ptr = &HeVAL((HE*)ptr);
ad64d0ec 969 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 970 SvREFCNT_inc_void(*(SV**)ptr);
502c6561 971 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
972 goto restore_sv;
973 }
974 }
975 SvREFCNT_dec(hv);
4e4c362e
GS
976 SvREFCNT_dec(value);
977 break;
462e5cf6 978 case SAVEt_OP:
533c011a 979 PL_op = (OP*)SSPOPPTR;
462e5cf6 980 break;
25eaa213 981 case SAVEt_HINTS:
045ac317 982 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 983 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
984 GvHV(PL_hintgv) = NULL;
985 }
c28fe1ec
NC
986 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
987 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 988 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 989 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 990 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 991 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
992 assert(GvHV(PL_hintgv));
993 } else if (!GvHV(PL_hintgv)) {
994 /* Need to add a new one manually, else gv_fetchpv() can
995 add one in this code:
996
997 if (SvTYPE(gv) == SVt_PVGV) {
998 if (add) {
999 GvMULTI_on(gv);
1000 gv_init_sv(gv, sv_type);
1001 if (*name=='!' && sv_type == SVt_PVHV && len==1)
1002 require_errno(gv);
1003 }
1004 return gv;
1005 }
1006
1007 and it won't have the magic set. */
1008
1009 HV *const hv = newHV();
1010 hv_magic(hv, NULL, PERL_MAGIC_hints);
1011 GvHV(PL_hintgv) = hv;
dfa41748 1012 }
5b9c0671 1013 assert(GvHV(PL_hintgv));
b3ac6de7 1014 break;
cb50131a 1015 case SAVEt_COMPPAD:
f3548bdc 1016 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 1017 if (PL_comppad)
cb50131a
CB
1018 PL_curpad = AvARRAY(PL_comppad);
1019 else
4608196e 1020 PL_curpad = NULL;
cb50131a 1021 break;
09edbca0 1022 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1023 {
35a4481c 1024 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 1025 SV **svp;
c3564e5c 1026 ptr = SSPOPPTR;
09edbca0
NC
1027 assert (ptr);
1028 svp = AvARRAY((PAD*)ptr) + off;
1029 /* This mortalizing used to be done by POPLOOP() via itersave.
1030 But as we have all the information here, we can do it here,
1031 save even having to have itersave in the struct. */
1032 sv_2mortal(*svp);
ad64d0ec 1033 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
1034 }
1035 break;
8b7059b1
DM
1036 case SAVEt_SAVESWITCHSTACK:
1037 {
1038 dSP;
502c6561
NC
1039 AV *const t = MUTABLE_AV(SSPOPPTR);
1040 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
1041 SWITCHSTACK(t,f);
1042 PL_curstackinfo->si_stack = f;
1043 }
1044 break;
14f338dc
DM
1045 case SAVEt_SET_SVFLAGS:
1046 {
35a4481c
AL
1047 const U32 val = (U32)SSPOPINT;
1048 const U32 mask = (U32)SSPOPINT;
ad64d0ec 1049 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
1050 SvFLAGS(sv) &= ~mask;
1051 SvFLAGS(sv) |= val;
1052 }
1053 break;
95e06916
NC
1054
1055 /* This would be a mathom, but Perl_save_svref() calls a static
1056 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 1057 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 1058 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
1059 ptr = SSPOPPTR;
1060 av = NULL; /* what to refcnt_dec */
1061 goto restore_sv;
95e06916
NC
1062
1063 /* These are only saved in mathoms.c */
1064 case SAVEt_NSTAB:
159b6efe 1065 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1066 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1067 break;
2053acbf
NC
1068 case SAVEt_LONG: /* long reference */
1069 ptr = SSPOPPTR;
1070 *(long*)ptr = (long)SSPOPLONG;
1071 break;
95e06916
NC
1072 case SAVEt_IV: /* IV reference */
1073 ptr = SSPOPPTR;
1074 *(IV*)ptr = (IV)SSPOPIV;
1075 break;
1076
2053acbf
NC
1077 case SAVEt_I16: /* I16 reference */
1078 ptr = SSPOPPTR;
1079 *(I16*)ptr = (I16)SSPOPINT;
1080 break;
1081 case SAVEt_I8: /* I8 reference */
1082 ptr = SSPOPPTR;
1083 *(I8*)ptr = (I8)SSPOPINT;
1084 break;
2053acbf
NC
1085 case SAVEt_DESTRUCTOR:
1086 ptr = SSPOPPTR;
1087 (*SSPOPDPTR)(ptr);
1088 break;
fc15ae8f
NC
1089 case SAVEt_COP_ARYBASE:
1090 ptr = SSPOPPTR;
1091 i = SSPOPINT;
1092 CopARYBASE_set((COP *)ptr, i);
1093 break;
68da3b2f
NC
1094 case SAVEt_COMPILE_WARNINGS:
1095 ptr = SSPOPPTR;
72dc9ed5 1096
68da3b2f
NC
1097 if (!specialWARN(PL_compiling.cop_warnings))
1098 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1099
10edeb5d 1100 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1101 break;
1ade1aa1
NC
1102 case SAVEt_RE_STATE:
1103 {
1104 const struct re_save_state *const state
1105 = (struct re_save_state *)
1106 (PL_savestack + PL_savestack_ix
1107 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1108 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1109
1ade1aa1
NC
1110 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1111 Safefree(PL_reg_start_tmp);
1ade1aa1 1112 }
1ade1aa1
NC
1113 if (PL_reg_poscache != state->re_state_reg_poscache) {
1114 Safefree(PL_reg_poscache);
1ade1aa1 1115 }
46ab3289 1116 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1117 }
1118 break;
7c197c94
DM
1119 case SAVEt_PARSER:
1120 ptr = SSPOPPTR;
1121 parser_free((yy_parser *) ptr);
1122 break;
79072805 1123 default:
cea2e8a9 1124 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1125 }
1126 }
302c0c93
NC
1127
1128 PL_tainted = was;
f410a211
NC
1129
1130 PERL_ASYNC_CHECK();
79072805 1131}
8990e307 1132
8990e307 1133void
864dbfa3 1134Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1135{
97aff369 1136 dVAR;
7918f24d
NC
1137
1138 PERL_ARGS_ASSERT_CX_DUMP;
1139
35ff7856 1140#ifdef DEBUGGING
22c35a8c 1141 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1142 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1143 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1144 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1145 PTR2UV(cx->blk_oldcop));
760ac839
LW
1146 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1147 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1148 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1149 PTR2UV(cx->blk_oldpm));
760ac839 1150 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1151 }
6b35e009 1152 switch (CxTYPE(cx)) {
8990e307
LW
1153 case CXt_NULL:
1154 case CXt_BLOCK:
1155 break;
146174a9 1156 case CXt_FORMAT:
f9c764c5
NC
1157 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1158 PTR2UV(cx->blk_format.cv));
1159 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1160 PTR2UV(cx->blk_format.gv));
1161 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1162 PTR2UV(cx->blk_format.dfoutgv));
1163 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1164 (int)CxHASARGS(cx));
f9c764c5
NC
1165 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1166 PTR2UV(cx->blk_format.retop));
146174a9 1167 break;
8990e307 1168 case CXt_SUB:
146174a9
CB
1169 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1170 PTR2UV(cx->blk_sub.cv));
760ac839 1171 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1172 (long)cx->blk_sub.olddepth);
760ac839 1173 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1174 (int)CxHASARGS(cx));
1175 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1176 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1177 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1178 break;
1179 case CXt_EVAL:
760ac839 1180 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1181 (long)CxOLD_IN_EVAL(cx));
760ac839 1182 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1183 PL_op_name[CxOLD_OP_TYPE(cx)],
1184 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1185 if (cx->blk_eval.old_namesv)
1186 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1187 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1188 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1189 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1190 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1191 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1192 break;
1193
c6fdafd0 1194 case CXt_LOOP_LAZYIV:
d01136d6 1195 case CXt_LOOP_LAZYSV:
3b719c58
NC
1196 case CXt_LOOP_FOR:
1197 case CXt_LOOP_PLAIN:
0cbdab38 1198 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1199 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1200 (long)cx->blk_loop.resetsp);
022eaa24
NC
1201 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1202 PTR2UV(cx->blk_loop.my_op));
146174a9 1203 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1204 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1205 /* XXX: not accurate for LAZYSV/IV */
146174a9 1206 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1207 PTR2UV(cx->blk_loop.state_u.ary.ary));
1208 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1209 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1210 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1211 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1212 break;
1213
1214 case CXt_SUBST:
760ac839 1215 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1216 (long)cx->sb_iters);
760ac839 1217 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1218 (long)cx->sb_maxiters);
35ef4773
GS
1219 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1220 (long)cx->sb_rflags);
760ac839 1221 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1222 (long)CxONCE(cx));
760ac839 1223 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1224 cx->sb_orig);
146174a9
CB
1225 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1226 PTR2UV(cx->sb_dstr));
1227 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1228 PTR2UV(cx->sb_targ));
1229 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1230 PTR2UV(cx->sb_s));
1231 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1232 PTR2UV(cx->sb_m));
1233 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1234 PTR2UV(cx->sb_strend));
1235 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1236 PTR2UV(cx->sb_rxres));
8990e307
LW
1237 break;
1238 }
65e66c80 1239#else
96a5add6 1240 PERL_UNUSED_CONTEXT;
65e66c80 1241 PERL_UNUSED_ARG(cx);
17c3b450 1242#endif /* DEBUGGING */
35ff7856 1243}
241d1a3b
NC
1244
1245/*
1246 * Local variables:
1247 * c-indentation-style: bsd
1248 * c-basic-offset: 4
1249 * indent-tabs-mode: t
1250 * End:
1251 *
37442d52
RGS
1252 * ex: set ts=8 sts=4 sw=4 noet:
1253 */