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[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
10507e11 333 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 334
5f05dabc 335 if (empty) {
12816592 336 GP *gp = Perl_newGP(aTHX_ gv);
959f7ad7 337 HV * const stash = GvSTASH(gv);
3d460042
FC
338 bool isa_changed = 0;
339
340 if (stash && HvENAME(stash)) {
341 if (GvNAMELEN(gv) == 3 && strnEQ(GvNAME(gv), "ISA", 3))
342 isa_changed = TRUE;
343 else if (GvCVu(gv))
344 /* taking a method out of circulation ("local")*/
345 mro_method_changed_in(stash);
346 }
146174a9
CB
347 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
348 gp->gp_io = newIO();
349 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
350 }
c43ae56f 351 GvGP_set(gv,gp);
3d460042 352 if (isa_changed) mro_isa_changed_in(stash);
5f05dabc
PP
353 }
354 else {
44a8e56a 355 gp_ref(GvGP(gv));
5f05dabc
PP
356 GvINTRO_on(gv);
357 }
79072805 358}
79072805 359
79072805 360AV *
864dbfa3 361Perl_save_ary(pTHX_ GV *gv)
79072805 362{
901017d6 363 AV * const oav = GvAVn(gv);
67a38de0 364 AV *av;
fb73857a 365
7918f24d
NC
366 PERL_ARGS_ASSERT_SAVE_ARY;
367
5d9574c1 368 if (UNLIKELY(!AvREAL(oav) && AvREIFY(oav)))
67a38de0 369 av_reify(oav);
01433346 370 save_pushptrptr(SvREFCNT_inc_simple_NN(gv), oav, SAVEt_AV);
79072805 371
4608196e 372 GvAV(gv) = NULL;
fb73857a 373 av = GvAVn(gv);
5d9574c1 374 if (UNLIKELY(SvMAGIC(oav)))
9711599e 375 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 376 return av;
79072805
LW
377}
378
379HV *
864dbfa3 380Perl_save_hash(pTHX_ GV *gv)
79072805 381{
fb73857a
PP
382 HV *ohv, *hv;
383
7918f24d
NC
384 PERL_ARGS_ASSERT_SAVE_HASH;
385
01433346
FC
386 save_pushptrptr(
387 SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV
388 );
79072805 389
4608196e 390 GvHV(gv) = NULL;
fb73857a 391 hv = GvHVn(gv);
5d9574c1 392 if (UNLIKELY(SvMAGIC(ohv)))
9711599e 393 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 394 return hv;
79072805
LW
395}
396
397void
5aaab254 398Perl_save_item(pTHX_ SV *item)
79072805 399{
eb578fdb 400 SV * const sv = newSVsv(item);
79072805 401
7918f24d
NC
402 PERL_ARGS_ASSERT_SAVE_ITEM;
403
e22024d3
NC
404 save_pushptrptr(item, /* remember the pointer */
405 sv, /* remember the value */
406 SAVEt_ITEM);
79072805
LW
407}
408
409void
1409bc06 410Perl_save_bool(pTHX_ bool *boolp)
79072805 411{
a3444cc5 412 dSS_ADD;
7918f24d 413
1409bc06 414 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 415
a3444cc5
DM
416 SS_ADD_PTR(boolp);
417 SS_ADD_UV(SAVEt_BOOL | (*boolp << 8));
418 SS_ADD_END(2);
1409bc06
NC
419}
420
7623d426
NC
421void
422Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06 423{
a3444cc5
DM
424 dSS_ADD;
425
426 SS_ADD_INT(i);
427 SS_ADD_PTR(ptr);
428 SS_ADD_UV(type);
429 SS_ADD_END(3);
79072805
LW
430}
431
432void
1409bc06 433Perl_save_int(pTHX_ int *intp)
9febdf04 434{
d172696c 435 const int i = *intp;
9b139d09 436 UV type = ((UV)((UV)i << SAVE_TIGHT_SHIFT) | SAVEt_INT_SMALL);
d172696c
DM
437 int size = 2;
438 dSS_ADD;
7918f24d 439
1409bc06 440 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 441
5d9574c1 442 if (UNLIKELY((int)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
443 SS_ADD_INT(i);
444 type = SAVEt_INT;
445 size++;
446 }
447 SS_ADD_PTR(intp);
448 SS_ADD_UV(type);
449 SS_ADD_END(size);
9febdf04
RH
450}
451
452void
58188858
RGS
453Perl_save_I8(pTHX_ I8 *bytep)
454{
a3444cc5 455 dSS_ADD;
7918f24d
NC
456
457 PERL_ARGS_ASSERT_SAVE_I8;
458
a3444cc5
DM
459 SS_ADD_PTR(bytep);
460 SS_ADD_UV(SAVEt_I8 | ((UV)*bytep << 8));
461 SS_ADD_END(2);
58188858
RGS
462}
463
464void
87a84751
JH
465Perl_save_I16(pTHX_ I16 *intp)
466{
a3444cc5 467 dSS_ADD;
7918f24d
NC
468
469 PERL_ARGS_ASSERT_SAVE_I16;
470
a3444cc5
DM
471 SS_ADD_PTR(intp);
472 SS_ADD_UV(SAVEt_I16 | ((UV)*intp << 8));
473 SS_ADD_END(2);
87a84751
JH
474}
475
476void
864dbfa3 477Perl_save_I32(pTHX_ I32 *intp)
79072805 478{
d172696c 479 const I32 i = *intp;
9b139d09 480 UV type = ((I32)((U32)i << SAVE_TIGHT_SHIFT) | SAVEt_I32_SMALL);
d172696c
DM
481 int size = 2;
482 dSS_ADD;
7918f24d
NC
483
484 PERL_ARGS_ASSERT_SAVE_I32;
485
5d9574c1 486 if (UNLIKELY((I32)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
487 SS_ADD_INT(i);
488 type = SAVEt_I32;
489 size++;
490 }
491 SS_ADD_PTR(intp);
492 SS_ADD_UV(type);
493 SS_ADD_END(size);
79072805
LW
494}
495
e8eb279c
FC
496void
497Perl_save_strlen(pTHX_ STRLEN *ptr)
498{
e8eb279c
FC
499 dSS_ADD;
500
501 PERL_ARGS_ASSERT_SAVE_STRLEN;
502
503 SS_ADD_IV(*ptr);
504 SS_ADD_PTR(ptr);
505 SS_ADD_UV(SAVEt_STRLEN);
506 SS_ADD_END(3);
507}
508
f8c11501
FC
509void
510Perl_save_iv(pTHX_ IV *ivp)
511{
512 PERL_ARGS_ASSERT_SAVE_IV;
513
514 SSCHECK(3);
515 SSPUSHIV(*ivp);
516 SSPUSHPTR(ivp);
517 SSPUSHUV(SAVEt_IV);
518}
519
85e6fe83
LW
520/* Cannot use save_sptr() to store a char* since the SV** cast will
521 * force word-alignment and we'll miss the pointer.
522 */
523void
864dbfa3 524Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 525{
7918f24d
NC
526 PERL_ARGS_ASSERT_SAVE_PPTR;
527
e22024d3 528 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
529}
530
79072805 531void
146174a9
CB
532Perl_save_vptr(pTHX_ void *ptr)
533{
7918f24d
NC
534 PERL_ARGS_ASSERT_SAVE_VPTR;
535
e22024d3 536 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
537}
538
539void
864dbfa3 540Perl_save_sptr(pTHX_ SV **sptr)
79072805 541{
7918f24d
NC
542 PERL_ARGS_ASSERT_SAVE_SPTR;
543
e22024d3 544 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
545}
546
c3564e5c 547void
09edbca0 548Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 549{
a3444cc5
DM
550 dSS_ADD;
551
f3548bdc 552 ASSERT_CURPAD_ACTIVE("save_padsv");
a3444cc5
DM
553 SS_ADD_PTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
554 SS_ADD_PTR(PL_comppad);
03dba561 555 SS_ADD_UV((UV)off);
a3444cc5
DM
556 SS_ADD_UV(SAVEt_PADSV_AND_MORTALIZE);
557 SS_ADD_END(4);
c3564e5c
GS
558}
559
79072805 560void
864dbfa3 561Perl_save_hptr(pTHX_ HV **hptr)
79072805 562{
7918f24d
NC
563 PERL_ARGS_ASSERT_SAVE_HPTR;
564
e22024d3 565 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
566}
567
568void
864dbfa3 569Perl_save_aptr(pTHX_ AV **aptr)
79072805 570{
7918f24d
NC
571 PERL_ARGS_ASSERT_SAVE_APTR;
572
e22024d3 573 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
574}
575
576void
2fd8beea 577Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 578{
a3444cc5
DM
579 dSS_ADD;
580 SS_ADD_PTR(ptr);
581 SS_ADD_UV(type);
582 SS_ADD_END(2);
8990e307
LW
583}
584
585void
864dbfa3 586Perl_save_clearsv(pTHX_ SV **svp)
8990e307 587{
cdcdfc56
NC
588 const UV offset = svp - PL_curpad;
589 const UV offset_shifted = offset << SAVE_TIGHT_SHIFT;
7918f24d
NC
590
591 PERL_ARGS_ASSERT_SAVE_CLEARSV;
592
f3548bdc 593 ASSERT_CURPAD_ACTIVE("save_clearsv");
623e28c6 594 SvPADSTALE_off(*svp); /* mark lexical as active */
5d9574c1 595 if (UNLIKELY((offset_shifted >> SAVE_TIGHT_SHIFT) != offset)) {
147e3846 596 Perl_croak(aTHX_ "panic: pad offset %" UVuf " out of range (%p-%p)",
cdcdfc56 597 offset, svp, PL_curpad);
a3444cc5 598 }
cdcdfc56 599
a3444cc5
DM
600 {
601 dSS_ADD;
602 SS_ADD_UV(offset_shifted | SAVEt_CLEARSV);
603 SS_ADD_END(1);
604 }
8990e307
LW
605}
606
607void
864dbfa3 608Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 609{
7918f24d
NC
610 PERL_ARGS_ASSERT_SAVE_DELETE;
611
85a721ca 612 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
613}
614
615void
af097752
VP
616Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
617{
618 STRLEN len;
619 I32 klen;
620 const char *key;
621
622 PERL_ARGS_ASSERT_SAVE_HDELETE;
623
624 key = SvPV_const(keysv, len);
625 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
626 SvREFCNT_inc_simple_void_NN(hv);
627 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
628}
629
630void
c70927a6 631Perl_save_adelete(pTHX_ AV *av, SSize_t key)
c68ec7a9 632{
c70927a6 633 dSS_ADD;
c68ec7a9
VP
634
635 PERL_ARGS_ASSERT_SAVE_ADELETE;
636
637 SvREFCNT_inc_void(av);
c70927a6
FC
638 SS_ADD_UV(key);
639 SS_ADD_PTR(av);
640 SS_ADD_IV(SAVEt_ADELETE);
641 SS_ADD_END(3);
c68ec7a9
VP
642}
643
644void
12ab1f58
JH
645Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
646{
a3444cc5 647 dSS_ADD;
7918f24d
NC
648 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
649
a3444cc5
DM
650 SS_ADD_DPTR(f);
651 SS_ADD_PTR(p);
652 SS_ADD_UV(SAVEt_DESTRUCTOR);
653 SS_ADD_END(3);
12ab1f58
JH
654}
655
656void
146174a9
CB
657Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
658{
a3444cc5
DM
659 dSS_ADD;
660
661 SS_ADD_DXPTR(f);
662 SS_ADD_PTR(p);
663 SS_ADD_UV(SAVEt_DESTRUCTOR_X);
664 SS_ADD_END(3);
146174a9
CB
665}
666
667void
da8315f8
NC
668Perl_save_hints(pTHX)
669{
20439bc7 670 COPHH *save_cophh = cophh_copy(CopHINTHASH_get(&PL_compiling));
da8315f8 671 if (PL_hints & HINT_LOCALIZE_HH) {
52c7aca6
FC
672 HV *oldhh = GvHV(PL_hintgv);
673 save_pushptri32ptr(oldhh, PL_hints, save_cophh, SAVEt_HINTS);
674 GvHV(PL_hintgv) = NULL; /* in case copying dies */
675 GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh);
be84297e 676 } else {
20439bc7 677 save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS);
da8315f8 678 }
be84297e
NC
679}
680
681static void
682S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
683 const int type)
684{
a3444cc5
DM
685 dSS_ADD;
686 SS_ADD_PTR(ptr1);
687 SS_ADD_INT(i);
688 SS_ADD_PTR(ptr2);
689 SS_ADD_UV(type);
690 SS_ADD_END(4);
da8315f8
NC
691}
692
693void
c70927a6
FC
694Perl_save_aelem_flags(pTHX_ AV *av, SSize_t idx, SV **sptr,
695 const U32 flags)
4e4c362e 696{
20b7effb 697 dSS_ADD;
bfc4de9f 698 SV *sv;
7918f24d 699
91d1c79f 700 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 701
0cbee0a4 702 SvGETMAGIC(*sptr);
c70927a6
FC
703 SS_ADD_PTR(SvREFCNT_inc_simple(av));
704 SS_ADD_IV(idx);
705 SS_ADD_PTR(SvREFCNT_inc(*sptr));
706 SS_ADD_UV(SAVEt_AELEM);
707 SS_ADD_END(4);
1cdc9186
FC
708 /* The array needs to hold a reference count on its new element, so it
709 must be AvREAL. */
5d9574c1 710 if (UNLIKELY(!AvREAL(av) && AvREIFY(av)))
1cdc9186 711 av_reify(av);
91d1c79f 712 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
713 if (flags & SAVEf_KEEPOLDELEM)
714 return;
bfc4de9f
DM
715 sv = *sptr;
716 /* If we're localizing a tied array element, this new sv
717 * won't actually be stored in the array - so it won't get
718 * reaped when the localize ends. Ensure it gets reaped by
719 * mortifying it instead. DAPM */
5d9574c1 720 if (UNLIKELY(SvTIED_mg((const SV *)av, PERL_MAGIC_tied)))
bfc4de9f 721 sv_2mortal(sv);
4e4c362e
GS
722}
723
724void
af7df257 725Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 726{
bfc4de9f 727 SV *sv;
7918f24d 728
af7df257 729 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 730
0cbee0a4 731 SvGETMAGIC(*sptr);
a3444cc5
DM
732 {
733 dSS_ADD;
734 SS_ADD_PTR(SvREFCNT_inc_simple(hv));
735 SS_ADD_PTR(newSVsv(key));
736 SS_ADD_PTR(SvREFCNT_inc(*sptr));
737 SS_ADD_UV(SAVEt_HELEM);
738 SS_ADD_END(4);
739 }
af7df257 740 save_scalar_at(sptr, flags);
75d34a09
VP
741 if (flags & SAVEf_KEEPOLDELEM)
742 return;
bfc4de9f
DM
743 sv = *sptr;
744 /* If we're localizing a tied hash element, this new sv
745 * won't actually be stored in the hash - so it won't get
746 * reaped when the localize ends. Ensure it gets reaped by
747 * mortifying it instead. DAPM */
5d9574c1 748 if (UNLIKELY(SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)))
bfc4de9f 749 sv_2mortal(sv);
4e4c362e
GS
750}
751
2053acbf
NC
752SV*
753Perl_save_svref(pTHX_ SV **sptr)
754{
7918f24d
NC
755 PERL_ARGS_ASSERT_SAVE_SVREF;
756
2053acbf 757 SvGETMAGIC(*sptr);
e22024d3 758 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 759 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
760}
761
2ef9a108
DM
762
763void
764Perl_savetmps(pTHX)
765{
766 dSS_ADD;
767 SS_ADD_IV(PL_tmps_floor);
768 PL_tmps_floor = PL_tmps_ix;
769 SS_ADD_UV(SAVEt_TMPSFLOOR);
770 SS_ADD_END(2);
771}
772
773
455ece5e 774I32
864dbfa3 775Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 776{
eb578fdb
KW
777 const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
778 - (char*)PL_savestack);
1be36ce0
NC
779 const UV elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
780 const UV elems_shifted = elems << SAVE_TIGHT_SHIFT;
455ece5e 781
5d9574c1 782 if (UNLIKELY((elems_shifted >> SAVE_TIGHT_SHIFT) != elems))
93a641ae 783 Perl_croak(aTHX_
147e3846 784 "panic: save_alloc elems %" UVuf " out of range (%" IVdf "-%" IVdf ")",
93a641ae 785 elems, (IV)size, (IV)pad);
1be36ce0
NC
786
787 SSGROW(elems + 1);
455ece5e
AD
788
789 PL_savestack_ix += elems;
1be36ce0 790 SSPUSHUV(SAVEt_ALLOC | elems_shifted);
455ece5e
AD
791 return start;
792}
793
03dba561 794
8c036433 795static const U8 arg_counts[] = {
9a2fefd6
DM
796 0, /* SAVEt_ALLOC */
797 0, /* SAVEt_CLEARPADRANGE */
798 0, /* SAVEt_CLEARSV */
799 0, /* SAVEt_REGCONTEXT */
800 1, /* SAVEt_TMPSFLOOR */
801 1, /* SAVEt_BOOL */
802 1, /* SAVEt_COMPILE_WARNINGS */
803 1, /* SAVEt_COMPPAD */
804 1, /* SAVEt_FREECOPHH */
805 1, /* SAVEt_FREEOP */
806 1, /* SAVEt_FREEPV */
807 1, /* SAVEt_FREESV */
808 1, /* SAVEt_I16 */
809 1, /* SAVEt_I32_SMALL */
810 1, /* SAVEt_I8 */
811 1, /* SAVEt_INT_SMALL */
812 1, /* SAVEt_MORTALIZESV */
813 1, /* SAVEt_NSTAB */
814 1, /* SAVEt_OP */
815 1, /* SAVEt_PARSER */
816 1, /* SAVEt_STACK_POS */
817 1, /* SAVEt_READONLY_OFF */
818 1, /* SAVEt_FREEPADNAME */
819 2, /* SAVEt_AV */
820 2, /* SAVEt_DESTRUCTOR */
821 2, /* SAVEt_DESTRUCTOR_X */
822 2, /* SAVEt_GENERIC_PVREF */
823 2, /* SAVEt_GENERIC_SVREF */
824 2, /* SAVEt_GP */
825 2, /* SAVEt_GVSV */
826 2, /* SAVEt_HINTS */
827 2, /* SAVEt_HPTR */
828 2, /* SAVEt_HV */
829 2, /* SAVEt_I32 */
830 2, /* SAVEt_INT */
831 2, /* SAVEt_ITEM */
832 2, /* SAVEt_IV */
833 2, /* SAVEt_LONG */
834 2, /* SAVEt_PPTR */
835 2, /* SAVEt_SAVESWITCHSTACK */
836 2, /* SAVEt_SHARED_PVREF */
837 2, /* SAVEt_SPTR */
838 2, /* SAVEt_STRLEN */
839 2, /* SAVEt_SV */
840 2, /* SAVEt_SVREF */
841 2, /* SAVEt_VPTR */
842 2, /* SAVEt_ADELETE */
843 2, /* SAVEt_APTR */
844 3, /* SAVEt_HELEM */
845 3, /* SAVEt_PADSV_AND_MORTALIZE*/
846 3, /* SAVEt_SET_SVFLAGS */
847 3, /* SAVEt_GVSLOT */
848 3, /* SAVEt_AELEM */
849 3 /* SAVEt_DELETE */
850};
851
03dba561 852
462e5cf6 853void
864dbfa3 854Perl_leave_scope(pTHX_ I32 base)
79072805 855{
302c0c93 856 /* Localise the effects of the TAINT_NOT inside the loop. */
284167a5 857 bool was = TAINT_get;
79072805 858
5d9574c1 859 if (UNLIKELY(base < -1))
5637ef5b 860 Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base);
1c98cc53
DM
861 DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
862 (long)PL_savestack_ix, (long)base));
3280af22 863 while (PL_savestack_ix > base) {
03dba561
DM
864 UV uv;
865 U8 type;
9a2fefd6 866 ANY *ap; /* arg pointer */
c9728782 867 ANY a0, a1, a2; /* up to 3 args */
03dba561 868
c6ae7647
NC
869 TAINT_NOT;
870
03dba561 871 {
9a2fefd6 872 U8 argcount;
03dba561 873 I32 ix = PL_savestack_ix - 1;
9a2fefd6
DM
874
875 ap = &PL_savestack[ix];
876 uv = ap->any_uv;
03dba561 877 type = (U8)uv & SAVE_MASK;
9a2fefd6
DM
878 argcount = arg_counts[type];
879 PL_savestack_ix = ix - argcount;
880 ap -= argcount;
03dba561
DM
881 }
882
c6bf6a65 883 switch (type) {
79072805 884 case SAVEt_ITEM: /* normal string */
c9728782
DM
885 a0 = ap[0]; a1 = ap[1];
886 sv_replace(a0.any_sv, a1.any_sv);
887 if (UNLIKELY(SvSMAGICAL(a0.any_sv))) {
b492a59e 888 PL_localizing = 2;
c9728782 889 mg_set(a0.any_sv);
b492a59e
DM
890 PL_localizing = 0;
891 }
79072805 892 break;
03dba561
DM
893
894 /* This would be a mathom, but Perl_save_svref() calls a static
895 function, S_save_scalar_at(), so has to stay in this file. */
896 case SAVEt_SVREF: /* scalar reference */
c9728782 897 a0 = ap[0]; a1 = ap[1];
75ebea3c 898 a2.any_svp = a0.any_svp;
c9728782 899 a0.any_sv = NULL; /* what to refcnt_dec */
03dba561
DM
900 goto restore_sv;
901
8aacddc1 902 case SAVEt_SV: /* scalar reference */
c9728782 903 a0 = ap[0]; a1 = ap[1];
75ebea3c 904 a2.any_svp = &GvSV(a0.any_gv);
2053acbf 905 restore_sv:
03dba561 906 {
75ebea3c
DM
907 /* do *a2.any_svp = a1 and free a0 */
908 SV * const sv = *a2.any_svp;
909 *a2.any_svp = a1.any_sv;
2053acbf 910 SvREFCNT_dec(sv);
c9728782
DM
911 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
912 /* mg_set could die, skipping the freeing of a0 and
913 * a1; Ensure that they're always freed in that case */
2baebb98 914 dSS_ADD;
c9728782 915 SS_ADD_PTR(a1.any_sv);
2baebb98 916 SS_ADD_UV(SAVEt_FREESV);
c9728782 917 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
918 SS_ADD_UV(SAVEt_FREESV);
919 SS_ADD_END(4);
b492a59e 920 PL_localizing = 2;
c9728782 921 mg_set(a1.any_sv);
b492a59e 922 PL_localizing = 0;
2baebb98 923 break;
b492a59e 924 }
c9728782
DM
925 SvREFCNT_dec_NN(a1.any_sv);
926 SvREFCNT_dec(a0.any_sv);
2053acbf 927 break;
03dba561 928 }
c9728782 929
8aacddc1 930 case SAVEt_GENERIC_PVREF: /* generic pv */
c9728782
DM
931 a0 = ap[0]; a1 = ap[1];
932 if (*a1.any_pvp != a0.any_pv) {
933 Safefree(*a1.any_pvp);
934 *a1.any_pvp = a0.any_pv;
f4dd75d9
GS
935 }
936 break;
c9728782 937
05ec9bb3 938 case SAVEt_SHARED_PVREF: /* shared pv */
c9728782
DM
939 a0 = ap[0]; a1 = ap[1];
940 if (*a0.any_pvp != a1.any_pv) {
5e54c26f 941#ifdef NETWARE
c9728782 942 PerlMem_free(*a0.any_pvp);
5e54c26f 943#else
c9728782 944 PerlMemShared_free(*a0.any_pvp);
5e54c26f 945#endif
c9728782 946 *a0.any_pvp = a1.any_pv;
05ec9bb3
NIS
947 }
948 break;
c9728782 949
f83b46a0 950 case SAVEt_GVSV: /* scalar slot in GV */
c9728782 951 a0 = ap[0]; a1 = ap[1];
75ebea3c 952 a0.any_svp = &GvSV(a0.any_gv);
f83b46a0 953 goto restore_svp;
c9728782 954
8aacddc1 955 case SAVEt_GENERIC_SVREF: /* generic sv */
c9728782 956 a0 = ap[0]; a1 = ap[1];
f83b46a0 957 restore_svp:
03dba561 958 {
75ebea3c
DM
959 /* do *a0.any_svp = a1 */
960 SV * const sv = *a0.any_svp;
961 *a0.any_svp = a1.any_sv;
f4dd75d9 962 SvREFCNT_dec(sv);
c9728782 963 SvREFCNT_dec(a1.any_sv);
b9d12d37 964 break;
03dba561 965 }
c9728782 966
db9306af 967 case SAVEt_GVSLOT: /* any slot in GV */
03dba561 968 {
9a2fefd6 969 HV * hv;
c9728782
DM
970 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
971 hv = GvSTASH(a0.any_gv);
db9306af 972 if (hv && HvENAME(hv) && (
c9728782 973 (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV)
75ebea3c 974 || (*a1.any_svp && SvTYPE(*a1.any_svp) == SVt_PVCV)
db9306af
FC
975 ))
976 {
75ebea3c
DM
977 if ((char *)a1.any_svp < (char *)GvGP(a0.any_gv)
978 || (char *)a1.any_svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp)
c9728782 979 || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */
db9306af
FC
980 PL_sub_generation++;
981 else mro_method_changed_in(hv);
982 }
75ebea3c
DM
983 a0.any_svp = a1.any_svp;
984 a1.any_sv = a2.any_sv;
db9306af 985 goto restore_svp;
03dba561 986 }
c9728782 987
8aacddc1 988 case SAVEt_AV: /* array reference */
c9728782
DM
989 a0 = ap[0]; a1 = ap[1];
990 SvREFCNT_dec(GvAV(a0.any_gv));
991 GvAV(a0.any_gv) = a1.any_av;
2baebb98 992 avhv_common:
c9728782
DM
993 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
994 /* mg_set might die, so make sure a0 isn't leaked */
2baebb98 995 dSS_ADD;
c9728782 996 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
997 SS_ADD_UV(SAVEt_FREESV);
998 SS_ADD_END(2);
b492a59e 999 PL_localizing = 2;
c9728782 1000 mg_set(a1.any_sv);
b492a59e 1001 PL_localizing = 0;
2baebb98 1002 break;
b492a59e 1003 }
c9728782 1004 SvREFCNT_dec_NN(a0.any_sv);
8aacddc1 1005 break;
c9728782 1006
8aacddc1 1007 case SAVEt_HV: /* hash reference */
c9728782
DM
1008 a0 = ap[0]; a1 = ap[1];
1009 SvREFCNT_dec(GvHV(a0.any_gv));
1010 GvHV(a0.any_gv) = a1.any_hv;
2baebb98
DM
1011 goto avhv_common;
1012
994d373a 1013 case SAVEt_INT_SMALL:
c9728782
DM
1014 a0 = ap[0];
1015 *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT);
994d373a 1016 break;
c9728782 1017
79072805 1018 case SAVEt_INT: /* int reference */
c9728782
DM
1019 a0 = ap[0]; a1 = ap[1];
1020 *(int*)a1.any_ptr = (int)a0.any_i32;
79072805 1021 break;
c9728782 1022
e8eb279c 1023 case SAVEt_STRLEN: /* STRLEN/size_t ref */
c9728782
DM
1024 a0 = ap[0]; a1 = ap[1];
1025 *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv;
e8eb279c 1026 break;
c9728782 1027
2ef9a108 1028 case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */
c9728782
DM
1029 a0 = ap[0];
1030 PL_tmps_floor = (SSize_t)a0.any_iv;
2ef9a108 1031 break;
c9728782 1032
9febdf04 1033 case SAVEt_BOOL: /* bool reference */
c9728782
DM
1034 a0 = ap[0];
1035 *(bool*)a0.any_ptr = cBOOL(uv >> 8);
9a9b5ec9
DM
1036#ifdef NO_TAINT_SUPPORT
1037 PERL_UNUSED_VAR(was);
1038#else
c9728782 1039 if (UNLIKELY(a0.any_ptr == &(TAINT_get))) {
b6f93e7a
KW
1040 /* If we don't update <was>, to reflect what was saved on the
1041 * stack for PL_tainted, then we will overwrite this attempt to
1042 * restore it when we exit this routine. Note that this won't
1043 * work if this value was saved in a wider-than necessary type,
1044 * such as I32 */
c9728782 1045 was = *(bool*)a0.any_ptr;
b6f93e7a 1046 }
284167a5 1047#endif
9febdf04 1048 break;
c9728782 1049
89abef21 1050 case SAVEt_I32_SMALL:
c9728782
DM
1051 a0 = ap[0];
1052 *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT);
89abef21 1053 break;
c9728782 1054
79072805 1055 case SAVEt_I32: /* I32 reference */
c9728782 1056 a0 = ap[0]; a1 = ap[1];
3235b7a3 1057#ifdef PERL_DEBUG_READONLY_OPS
c9728782 1058 if (*(I32*)a1.any_ptr != a0.any_i32)
3235b7a3 1059#endif
c9728782 1060 *(I32*)a1.any_ptr = a0.any_i32;
79072805 1061 break;
c9728782 1062
79072805 1063 case SAVEt_SPTR: /* SV* reference */
146174a9 1064 case SAVEt_VPTR: /* random* reference */
85e6fe83 1065 case SAVEt_PPTR: /* char* reference */
79072805 1066 case SAVEt_HPTR: /* HV* reference */
79072805 1067 case SAVEt_APTR: /* AV* reference */
c9728782 1068 a0 = ap[0]; a1 = ap[1];
212a001e 1069 *a1.any_svp= a0.any_sv;
79072805 1070 break;
c9728782 1071
fb73857a 1072 case SAVEt_GP: /* scalar reference */
03dba561
DM
1073 {
1074 HV *hv;
9a2fefd6
DM
1075 bool had_method;
1076
c9728782 1077 a0 = ap[0]; a1 = ap[1];
03dba561 1078 /* possibly taking a method out of circulation */
c9728782
DM
1079 had_method = !!GvCVu(a0.any_gv);
1080 gp_free(a0.any_gv);
1081 GvGP_set(a0.any_gv, (GP*)a1.any_ptr);
1082 if ((hv=GvSTASH(a0.any_gv)) && HvENAME_get(hv)) {
1083 if ( GvNAMELEN(a0.any_gv) == 3
1084 && strnEQ(GvNAME(a0.any_gv), "ISA", 3)
03dba561
DM
1085 )
1086 mro_isa_changed_in(hv);
c9728782 1087 else if (had_method || GvCVu(a0.any_gv))
03dba561 1088 /* putting a method back into circulation ("local")*/
c9728782 1089 gv_method_changed(a0.any_gv);
3d460042 1090 }
c9728782 1091 SvREFCNT_dec_NN(a0.any_gv);
8aacddc1 1092 break;
03dba561 1093 }
c9728782 1094
8990e307 1095 case SAVEt_FREESV:
c9728782
DM
1096 a0 = ap[0];
1097 SvREFCNT_dec(a0.any_sv);
8990e307 1098 break;
c9728782 1099
0f94cb1f 1100 case SAVEt_FREEPADNAME:
c9728782
DM
1101 a0 = ap[0];
1102 PadnameREFCNT_dec((PADNAME *)a0.any_ptr);
0f94cb1f 1103 break;
c9728782 1104
3987a177 1105 case SAVEt_FREECOPHH:
c9728782
DM
1106 a0 = ap[0];
1107 cophh_free((COPHH *)a0.any_ptr);
3987a177 1108 break;
c9728782 1109
26d9b02f 1110 case SAVEt_MORTALIZESV:
c9728782
DM
1111 a0 = ap[0];
1112 sv_2mortal(a0.any_sv);
26d9b02f 1113 break;
c9728782 1114
8990e307 1115 case SAVEt_FREEOP:
c9728782 1116 a0 = ap[0];
5e5ba94b 1117 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP");
6ffb8402 1118 op_free(a0.any_op);
8990e307 1119 break;
c9728782 1120
8990e307 1121 case SAVEt_FREEPV:
c9728782
DM
1122 a0 = ap[0];
1123 Safefree(a0.any_ptr);
8990e307 1124 break;
4e09461c 1125
4e09461c 1126 case SAVEt_CLEARPADRANGE:
75ebea3c 1127 {
bdb0ae96
FC
1128 I32 i;
1129 SV **svp;
1130 i = (I32)((uv >> SAVE_TIGHT_SHIFT) & OPpPADRANGE_COUNTMASK);
1131 svp = &PL_curpad[uv >>
4e09461c
DM
1132 (OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)] + i - 1;
1133 goto clearsv;
8990e307 1134 case SAVEt_CLEARSV:
4e09461c
DM
1135 svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT];
1136 i = 1;
1137 clearsv:
1138 for (; i; i--, svp--) {
9a2fefd6 1139 SV *sv = *svp;
528ad060
DM
1140
1141 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
147e3846 1142 "Pad 0x%" UVxf "[0x%" UVxf "] clearsv: %ld sv=0x%" UVxf "<%" IVdf "> %s\n",
528ad060
DM
1143 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
1144 (long)(svp-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
1145 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
1146 ));
1147
1148 /* Can clear pad variable in place? */
9af15990 1149 if (SvREFCNT(sv) == 1 && !SvOBJECT(sv)) {
a07f0bef 1150
a07f0bef
DM
1151 /* these flags are the union of all the relevant flags
1152 * in the individual conditions within */
1153 if (UNLIKELY(SvFLAGS(sv) & (
a623f893 1154 SVf_READONLY|SVf_PROTECT /*for SvREADONLY_off*/
a07f0bef 1155 | (SVs_GMG|SVs_SMG|SVs_RMG) /* SvMAGICAL() */
7532eaae 1156 | SVf_OOK
a07f0bef
DM
1157 | SVf_THINKFIRST)))
1158 {
7500fc82
DM
1159 /* if a my variable that was made readonly is
1160 * going out of scope, we want to remove the
1161 * readonlyness so that it can go out of scope
1162 * quietly
1163 */
57c404c9 1164 if (SvREADONLY(sv))
7500fc82
DM
1165 SvREADONLY_off(sv);
1166
7532eaae
DM
1167 if (SvOOK(sv)) { /* OOK or HvAUX */
1168 if (SvTYPE(sv) == SVt_PVHV)
1169 Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
1170 else
1171 sv_backoff(sv);
1172 }
1173
7500fc82 1174 if (SvMAGICAL(sv)) {
7532eaae
DM
1175 /* note that backrefs (either in HvAUX or magic)
1176 * must be removed before other magic */
7500fc82
DM
1177 sv_unmagic(sv, PERL_MAGIC_backref);
1178 if (SvTYPE(sv) != SVt_PVCV)
1179 mg_free(sv);
1180 }
1181 if (SvTHINKFIRST(sv))
1182 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF
1183 |SV_COW_DROP_PV);
528ad060 1184
a07f0bef 1185 }
528ad060
DM
1186 switch (SvTYPE(sv)) {
1187 case SVt_NULL:
1188 break;
1189 case SVt_PVAV:
1190 av_clear(MUTABLE_AV(sv));
1191 break;
1192 case SVt_PVHV:
1193 hv_clear(MUTABLE_HV(sv));
1194 break;
1195 case SVt_PVCV:
1196 {
db5cc3ee 1197 HEK *hek =
db5cc3ee 1198 CvNAMED(sv)
9c98a81f
FC
1199 ? CvNAME_HEK((CV *)sv)
1200 : GvNAME_HEK(CvGV(sv));
528ad060 1201 assert(hek);
6110d17a 1202 (void)share_hek_hek(hek);
528ad060
DM
1203 cv_undef((CV *)sv);
1204 CvNAME_HEK_set(sv, hek);
f3feca7a 1205 CvLEXICAL_on(sv);
528ad060
DM
1206 break;
1207 }
1208 default:
c79d0076
NC
1209 /* This looks odd, but these two macros are for use in
1210 expressions and finish with a trailing comma, so
1211 adding a ; after them would be wrong. */
1212 assert_not_ROK(sv)
1213 assert_not_glob(sv)
5c85b638 1214 SvFLAGS(sv) &=~ (SVf_OK|SVf_IVisUV|SVf_UTF8);
528ad060
DM
1215 break;
1216 }
82e85a9c 1217 SvPADTMP_off(sv);
528ad060
DM
1218 SvPADSTALE_on(sv); /* mark as no longer live */
1219 }
1220 else { /* Someone has a claim on this, so abandon it. */
528ad060
DM
1221 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
1222 case SVt_PVAV: *svp = MUTABLE_SV(newAV()); break;
1223 case SVt_PVHV: *svp = MUTABLE_SV(newHV()); break;
1224 case SVt_PVCV:
1225 {
9c98a81f
FC
1226 HEK * const hek = CvNAMED(sv)
1227 ? CvNAME_HEK((CV *)sv)
1228 : GvNAME_HEK(CvGV(sv));
1229
528ad060
DM
1230 /* Create a stub */
1231 *svp = newSV_type(SVt_PVCV);
1232
1233 /* Share name */
528ad060 1234 CvNAME_HEK_set(*svp,
9c98a81f 1235 share_hek_hek(hek));
f3feca7a 1236 CvLEXICAL_on(*svp);
528ad060
DM
1237 break;
1238 }
1239 default: *svp = newSV(0); break;
1240 }
4a9a56a7 1241 SvREFCNT_dec_NN(sv); /* Cast current value to the winds. */
528ad060
DM
1242 /* preserve pad nature, but also mark as not live
1243 * for any closure capturing */
145bf8ee 1244 SvFLAGS(*svp) |= SVs_PADSTALE;
528ad060 1245 }
4e09461c 1246 }
8990e307 1247 break;
75ebea3c 1248 }
c9728782 1249
8990e307 1250 case SAVEt_DELETE:
c9728782
DM
1251 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1252 (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD);
1253 SvREFCNT_dec(a2.any_hv);
1254 Safefree(a0.any_ptr);
8990e307 1255 break;
c9728782 1256
c68ec7a9 1257 case SAVEt_ADELETE:
c9728782
DM
1258 a0 = ap[0]; a1 = ap[1];
1259 (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD);
1260 SvREFCNT_dec(a1.any_av);
c68ec7a9 1261 break;
c9728782 1262
146174a9 1263 case SAVEt_DESTRUCTOR_X:
c9728782
DM
1264 a0 = ap[0]; a1 = ap[1];
1265 (*a0.any_dxptr)(aTHX_ a1.any_ptr);
a0d0e21e 1266 break;
c9728782 1267
a0d0e21e 1268 case SAVEt_REGCONTEXT:
e0fa7e2b 1269 /* regexp must have croaked */
455ece5e 1270 case SAVEt_ALLOC:
1be36ce0 1271 PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT;
a0d0e21e 1272 break;
c9728782 1273
55497cff 1274 case SAVEt_STACK_POS: /* Position on Perl stack */
c9728782
DM
1275 a0 = ap[0];
1276 PL_stack_sp = PL_stack_base + a0.any_i32;
55497cff 1277 break;
c9728782 1278
161b7d16 1279 case SAVEt_AELEM: /* array element */
75ebea3c
DM
1280 {
1281 SV **svp;
c9728782
DM
1282 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1283 svp = av_fetch(a0.any_av, a1.any_iv, 1);
1284 if (UNLIKELY(!AvREAL(a0.any_av) && AvREIFY(a0.any_av))) /* undo reify guard */
1285 SvREFCNT_dec(a2.any_sv);
5d9574c1 1286 if (LIKELY(svp)) {
03dba561 1287 SV * const sv = *svp;
5d9574c1 1288 if (LIKELY(sv && sv != &PL_sv_undef)) {
c9728782 1289 if (UNLIKELY(SvTIED_mg((const SV *)a0.any_av, PERL_MAGIC_tied)))
b37c2d43 1290 SvREFCNT_inc_void_NN(sv);
75ebea3c
DM
1291 a1.any_sv = a2.any_sv;
1292 a2.any_svp = svp;
4e4c362e
GS
1293 goto restore_sv;
1294 }
1295 }
c9728782
DM
1296 SvREFCNT_dec(a0.any_av);
1297 SvREFCNT_dec(a2.any_sv);
4e4c362e 1298 break;
75ebea3c 1299 }
c9728782 1300
161b7d16 1301 case SAVEt_HELEM: /* hash element */
03dba561 1302 {
9a2fefd6
DM
1303 HE *he;
1304
c9728782
DM
1305 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1306 he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0);
1307 SvREFCNT_dec(a1.any_sv);
5d9574c1 1308 if (LIKELY(he)) {
03dba561 1309 const SV * const oval = HeVAL(he);
5d9574c1 1310 if (LIKELY(oval && oval != &PL_sv_undef)) {
75ebea3c 1311 SV **svp = &HeVAL(he);
c9728782 1312 if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied)))
03dba561 1313 SvREFCNT_inc_void(*svp);
75ebea3c
DM
1314 a1.any_sv = a2.any_sv;
1315 a2.any_svp = svp;
4e4c362e
GS
1316 goto restore_sv;
1317 }
1318 }
c9728782
DM
1319 SvREFCNT_dec(a0.any_hv);
1320 SvREFCNT_dec(a2.any_sv);
4e4c362e 1321 break;
03dba561 1322 }
75ebea3c 1323
462e5cf6 1324 case SAVEt_OP:
c9728782
DM
1325 a0 = ap[0];
1326 PL_op = (OP*)a0.any_ptr;
462e5cf6 1327 break;
c9728782 1328
25eaa213 1329 case SAVEt_HINTS:
c9728782 1330 a0 = ap[0]; a1 = ap[1];
3607ca02
FC
1331 if ((PL_hints & HINT_LOCALIZE_HH)) {
1332 while (GvHV(PL_hintgv)) {
2653c1e3 1333 HV *hv = GvHV(PL_hintgv);
045ac317 1334 GvHV(PL_hintgv) = NULL;
2653c1e3 1335 SvREFCNT_dec(MUTABLE_SV(hv));
3607ca02 1336 }
045ac317 1337 }
20439bc7 1338 cophh_free(CopHINTHASH_get(&PL_compiling));
c9728782
DM
1339 CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr);
1340 *(I32*)&PL_hints = a0.any_i32;
dfa41748 1341 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 1342 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 1343 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
2653c1e3
DM
1344 }
1345 if (!GvHV(PL_hintgv)) {
a3fb8386
FC
1346 /* Need to add a new one manually, else rv2hv can
1347 add one via GvHVn and it won't have the magic set. */
5b9c0671
NC
1348 HV *const hv = newHV();
1349 hv_magic(hv, NULL, PERL_MAGIC_hints);
1350 GvHV(PL_hintgv) = hv;
dfa41748 1351 }
5b9c0671 1352 assert(GvHV(PL_hintgv));
b3ac6de7 1353 break;
c9728782 1354
cb50131a 1355 case SAVEt_COMPPAD:
c9728782
DM
1356 a0 = ap[0];
1357 PL_comppad = (PAD*)a0.any_ptr;
5d9574c1 1358 if (LIKELY(PL_comppad))
cb50131a
CB
1359 PL_curpad = AvARRAY(PL_comppad);
1360 else
4608196e 1361 PL_curpad = NULL;
cb50131a 1362 break;
c9728782 1363
09edbca0 1364 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1365 {
09edbca0 1366 SV **svp;
9a2fefd6 1367
c9728782
DM
1368 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1369 assert (a1.any_ptr);
1370 svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv;
b405d38b
DM
1371 /* This mortalizing used to be done by CX_POOPLOOP() via
1372 itersave. But as we have all the information here, we
1373 can do it here, save even having to have itersave in
1374 the struct.
1375 */
09edbca0 1376 sv_2mortal(*svp);
c9728782 1377 *svp = a0.any_sv;
c3564e5c
GS
1378 }
1379 break;
c9728782 1380
8b7059b1
DM
1381 case SAVEt_SAVESWITCHSTACK:
1382 {
1383 dSP;
9a2fefd6 1384
c9728782
DM
1385 a0 = ap[0]; a1 = ap[1];
1386 SWITCHSTACK(a1.any_av, a0.any_av);
1387 PL_curstackinfo->si_stack = a0.any_av;
8b7059b1
DM
1388 }
1389 break;
c9728782 1390
14f338dc 1391 case SAVEt_SET_SVFLAGS:
c9728782
DM
1392 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1393 SvFLAGS(a0.any_sv) &= ~(a1.any_u32);
1394 SvFLAGS(a0.any_sv) |= a2.any_u32;
14f338dc 1395 break;
95e06916 1396
95e06916
NC
1397 /* These are only saved in mathoms.c */
1398 case SAVEt_NSTAB:
c9728782
DM
1399 a0 = ap[0];
1400 (void)sv_clear(a0.any_sv);
95e06916 1401 break;
c9728782 1402
2053acbf 1403 case SAVEt_LONG: /* long reference */
c9728782
DM
1404 a0 = ap[0]; a1 = ap[1];
1405 *(long*)a1.any_ptr = a0.any_long;
2053acbf 1406 break;
c9728782 1407
95e06916 1408 case SAVEt_IV: /* IV reference */
c9728782
DM
1409 a0 = ap[0]; a1 = ap[1];
1410 *(IV*)a1.any_ptr = a0.any_iv;
95e06916
NC
1411 break;
1412
2053acbf 1413 case SAVEt_I16: /* I16 reference */
c9728782
DM
1414 a0 = ap[0];
1415 *(I16*)a0.any_ptr = (I16)(uv >> 8);
2053acbf 1416 break;
c9728782 1417
2053acbf 1418 case SAVEt_I8: /* I8 reference */
c9728782
DM
1419 a0 = ap[0];
1420 *(I8*)a0.any_ptr = (I8)(uv >> 8);
2053acbf 1421 break;
c9728782 1422
2053acbf 1423 case SAVEt_DESTRUCTOR:
c9728782
DM
1424 a0 = ap[0]; a1 = ap[1];
1425 (*a0.any_dptr)(a1.any_ptr);
2053acbf 1426 break;
c9728782 1427
68da3b2f 1428 case SAVEt_COMPILE_WARNINGS:
c9728782 1429 a0 = ap[0];
68da3b2f
NC
1430 if (!specialWARN(PL_compiling.cop_warnings))
1431 PerlMemShared_free(PL_compiling.cop_warnings);
c9728782 1432 PL_compiling.cop_warnings = (STRLEN*)a0.any_ptr;
72dc9ed5 1433 break;
c9728782 1434
7c197c94 1435 case SAVEt_PARSER:
c9728782
DM
1436 a0 = ap[0];
1437 parser_free((yy_parser *)a0.any_ptr);
7c197c94 1438 break;
c9728782 1439
20d5dc23 1440 case SAVEt_READONLY_OFF:
c9728782
DM
1441 a0 = ap[0];
1442 SvREADONLY_off(a0.any_sv);
20d5dc23 1443 break;
c9728782 1444
79072805 1445 default:
75ebea3c
DM
1446 Perl_croak(aTHX_ "panic: leave_scope inconsistency %u",
1447 (U8)uv & SAVE_MASK);
79072805
LW
1448 }
1449 }
302c0c93 1450
284167a5 1451 TAINT_set(was);
79072805 1452}
8990e307 1453
8990e307 1454void
864dbfa3 1455Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1456{
7918f24d
NC
1457 PERL_ARGS_ASSERT_CX_DUMP;
1458
35ff7856 1459#ifdef DEBUGGING
22c35a8c 1460 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1461 if (CxTYPE(cx) != CXt_SUBST) {
e8d9e9d0 1462 const char *gimme_text;
760ac839 1463 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
147e3846 1464 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%" UVxf "\n",
146174a9 1465 PTR2UV(cx->blk_oldcop));
760ac839
LW
1466 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1467 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
e992140c 1468 PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix);
147e3846 1469 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%" UVxf "\n",
146174a9 1470 PTR2UV(cx->blk_oldpm));
e8d9e9d0
VP
1471 switch (cx->blk_gimme) {
1472 case G_VOID:
1473 gimme_text = "VOID";
1474 break;
1475 case G_SCALAR:
1476 gimme_text = "SCALAR";
1477 break;
1478 case G_ARRAY:
1479 gimme_text = "LIST";
1480 break;
1481 default:
1482 gimme_text = "UNKNOWN";
1483 break;
1484 }
1485 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text);
8990e307 1486 }
6b35e009 1487 switch (CxTYPE(cx)) {
8990e307
LW
1488 case CXt_NULL:
1489 case CXt_BLOCK:
1490 break;
146174a9 1491 case CXt_FORMAT:
147e3846 1492 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%" UVxf "\n",
f9c764c5 1493 PTR2UV(cx->blk_format.cv));
147e3846 1494 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%" UVxf "\n",
f9c764c5 1495 PTR2UV(cx->blk_format.gv));
147e3846 1496 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%" UVxf "\n",
f9c764c5
NC
1497 PTR2UV(cx->blk_format.dfoutgv));
1498 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1499 (int)CxHASARGS(cx));
147e3846 1500 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%" UVxf "\n",
f9c764c5 1501 PTR2UV(cx->blk_format.retop));
146174a9 1502 break;
8990e307 1503 case CXt_SUB:
147e3846 1504 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%" UVxf "\n",
146174a9 1505 PTR2UV(cx->blk_sub.cv));
760ac839 1506 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1507 (long)cx->blk_sub.olddepth);
760ac839 1508 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1509 (int)CxHASARGS(cx));
1510 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
147e3846 1511 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%" UVxf "\n",
f39bc417 1512 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1513 break;
1514 case CXt_EVAL:
760ac839 1515 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1516 (long)CxOLD_IN_EVAL(cx));
760ac839 1517 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1518 PL_op_name[CxOLD_OP_TYPE(cx)],
1519 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1520 if (cx->blk_eval.old_namesv)
1521 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1522 SvPVX_const(cx->blk_eval.old_namesv));
147e3846 1523 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%" UVxf "\n",
146174a9 1524 PTR2UV(cx->blk_eval.old_eval_root));
147e3846 1525 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%" UVxf "\n",
f39bc417 1526 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1527 break;
1528
93661e56 1529 case CXt_LOOP_PLAIN:
c6fdafd0 1530 case CXt_LOOP_LAZYIV:
d01136d6 1531 case CXt_LOOP_LAZYSV:
93661e56
DM
1532 case CXt_LOOP_LIST:
1533 case CXt_LOOP_ARY:
0cbdab38 1534 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
147e3846 1535 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%" UVxf "\n",
022eaa24 1536 PTR2UV(cx->blk_loop.my_op));
0925dc7f 1537 if (CxTYPE(cx) != CXt_LOOP_PLAIN) {
147e3846 1538 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%" UVxf "\n",
0925dc7f 1539 PTR2UV(CxITERVAR(cx)));
147e3846 1540 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%" UVxf "\n",
0925dc7f
DM
1541 PTR2UV(cx->blk_loop.itersave));
1542 /* XXX: not accurate for LAZYSV/IV/LIST */
147e3846 1543 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%" UVxf "\n",
0925dc7f
DM
1544 PTR2UV(cx->blk_loop.state_u.ary.ary));
1545 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1546 (long)cx->blk_loop.state_u.ary.ix);
1547 }
8990e307
LW
1548 break;
1549
1550 case CXt_SUBST:
760ac839 1551 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1552 (long)cx->sb_iters);
760ac839 1553 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1554 (long)cx->sb_maxiters);
35ef4773
GS
1555 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1556 (long)cx->sb_rflags);
760ac839 1557 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1558 (long)CxONCE(cx));
760ac839 1559 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1560 cx->sb_orig);
147e3846 1561 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%" UVxf "\n",
146174a9 1562 PTR2UV(cx->sb_dstr));
147e3846 1563 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%" UVxf "\n",
146174a9 1564 PTR2UV(cx->sb_targ));
147e3846 1565 PerlIO_printf(Perl_debug_log, "SB_S = 0x%" UVxf "\n",
146174a9 1566 PTR2UV(cx->sb_s));
147e3846 1567 PerlIO_printf(Perl_debug_log, "SB_M = 0x%" UVxf "\n",
146174a9 1568 PTR2UV(cx->sb_m));
147e3846 1569 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%" UVxf "\n",
146174a9 1570 PTR2UV(cx->sb_strend));
147e3846 1571 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%" UVxf "\n",
146174a9 1572 PTR2UV(cx->sb_rxres));
8990e307
LW
1573 break;
1574 }
65e66c80 1575#else
96a5add6 1576 PERL_UNUSED_CONTEXT;
65e66c80 1577 PERL_UNUSED_ARG(cx);
17c3b450 1578#endif /* DEBUGGING */
35ff7856 1579}
241d1a3b
NC
1580
1581/*
14d04a33 1582 * ex: set ts=8 sts=4 sw=4 et:
37442d52 1583 */