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