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clean up leave_scope()
[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
DM
38 Perl_croak(aTHX_
39 "panic: stack_grow() negative count (%"IVdf")", (IV)n);
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);
3280af22 58 return PL_stack_sp;
a0d0e21e
LW
59}
60
2ce36478
SM
61#ifndef STRESS_REALLOC
62#define GROW(old) ((old) * 3 / 2)
63#else
64#define GROW(old) ((old) + 1)
65#endif
66
e336de0d 67PERL_SI *
864dbfa3 68Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d
GS
69{
70 PERL_SI *si;
a02a5408 71 Newx(si, 1, PERL_SI);
e336de0d
GS
72 si->si_stack = newAV();
73 AvREAL_off(si->si_stack);
74 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 75 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
76 AvFILLp(si->si_stack) = 0;
77 si->si_prev = 0;
78 si->si_next = 0;
79 si->si_cxmax = cxitems - 1;
80 si->si_cxix = -1;
e788e7d3 81 si->si_type = PERLSI_UNDEF;
a02a5408 82 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
490576d1 83 /* Without any kind of initialising CX_PUSHSUBST()
9965345d 84 * in pp_subst() will read uninitialised heap. */
7e337ee0 85 PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
86 return si;
87}
88
79072805 89I32
864dbfa3 90Perl_cxinc(pTHX)
79072805 91{
a3b680e6 92 const IV old_max = cxstack_max;
2ce36478 93 cxstack_max = GROW(cxstack_max);
401a9b14 94 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT);
9965345d
JH
95 /* Without any kind of initialising deep enough recursion
96 * will end up reading uninitialised PERL_CONTEXTs. */
109bf713 97 PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
98 return cxstack_ix + 1;
99}
100
79072805 101void
864dbfa3 102Perl_push_scope(pTHX)
79072805 103{
5d9574c1 104 if (UNLIKELY(PL_scopestack_ix == PL_scopestack_max)) {
3280af22
NIS
105 PL_scopestack_max = GROW(PL_scopestack_max);
106 Renew(PL_scopestack, PL_scopestack_max, I32);
d343c3ef
GG
107#ifdef DEBUGGING
108 Renew(PL_scopestack_name, PL_scopestack_max, const char*);
520bb150 109#endif
79072805 110 }
d343c3ef
GG
111#ifdef DEBUGGING
112 PL_scopestack_name[PL_scopestack_ix] = "unknown";
113#endif
3280af22 114 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
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LW
115
116}
117
118void
864dbfa3 119Perl_pop_scope(pTHX)
79072805 120{
35a4481c 121 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 122 LEAVE_SCOPE(oldsave);
79072805
LW
123}
124
ba5248fc 125I32 *
864dbfa3 126Perl_markstack_grow(pTHX)
a0d0e21e 127{
35a4481c
AL
128 const I32 oldmax = PL_markstack_max - PL_markstack;
129 const I32 newmax = GROW(oldmax);
a0d0e21e 130
3280af22 131 Renew(PL_markstack, newmax, I32);
3280af22 132 PL_markstack_max = PL_markstack + newmax;
ba5248fc 133 PL_markstack_ptr = PL_markstack + oldmax;
30773234
DM
134 DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log,
135 "MARK grow %p %"IVdf" by %"IVdf"\n",
136 PL_markstack_ptr, (IV)*PL_markstack_ptr, (IV)oldmax)));
ba5248fc 137 return PL_markstack_ptr;
a0d0e21e
LW
138}
139
140void
864dbfa3 141Perl_savestack_grow(pTHX)
79072805 142{
49706441
FC
143#ifdef STRESS_REALLOC
144 PL_savestack_max += SS_MAXPUSH;
145#else
3caf0269 146 PL_savestack_max = GROW(PL_savestack_max);
49706441 147#endif
3caf0269
DM
148 /* Note that we allocate SS_MAXPUSH slots higher than ss_max
149 * so that SS_ADD_END(), SSGROW() etc can do a simper check */
150 Renew(PL_savestack, PL_savestack_max + SS_MAXPUSH, ANY);
79072805
LW
151}
152
4b3c1a47
AE
153void
154Perl_savestack_grow_cnt(pTHX_ I32 need)
155{
156 PL_savestack_max = PL_savestack_ix + need;
3caf0269
DM
157 /* Note that we allocate SS_MAXPUSH slots higher than ss_max
158 * so that SS_ADD_END(), SSGROW() etc can do a simper check */
159 Renew(PL_savestack, PL_savestack_max + SS_MAXPUSH, ANY);
4b3c1a47
AE
160}
161
2ce36478
SM
162#undef GROW
163
a953aca5
DD
164/* The original function was called Perl_tmps_grow and was removed from public
165 API, Perl_tmps_grow_p is the replacement and it used in public macros but
166 isn't public itself.
167
168 Perl_tmps_grow_p takes a proposed ix. A proposed ix is PL_tmps_ix + extend_by,
169 where the result of (PL_tmps_ix + extend_by) is >= PL_tmps_max
170 Upon return, PL_tmps_stack[ix] will be a valid address. For machine code
171 optimization and register usage reasons, the proposed ix passed into
172 tmps_grow is returned to the caller which the caller can then use to write
173 an SV * to PL_tmps_stack[ix]. If the caller was using tmps_grow in
174 pre-extend mode (EXTEND_MORTAL macro), then it ignores the return value of
175 tmps_grow. Note, tmps_grow DOES NOT write ix to PL_tmps_ix, the caller
176 must assign ix or ret val of tmps_grow to PL_temps_ix themselves if that is
177 appropriate. The assignment to PL_temps_ix can happen before or after
178 tmps_grow call since tmps_grow doesn't look at PL_tmps_ix.
179 */
180
181SSize_t
182Perl_tmps_grow_p(pTHX_ SSize_t ix)
677b06e3 183{
a953aca5 184 SSize_t extend_to = ix;
677b06e3 185#ifndef STRESS_REALLOC
a953aca5
DD
186 if (ix - PL_tmps_max < 128)
187 extend_to += (PL_tmps_max < 512) ? 128 : 512;
677b06e3 188#endif
a953aca5 189 PL_tmps_max = extend_to + 1;
677b06e3 190 Renew(PL_tmps_stack, PL_tmps_max, SV*);
a953aca5 191 return ix;
677b06e3
GS
192}
193
194
195void
864dbfa3 196Perl_free_tmps(pTHX)
79072805
LW
197{
198 /* XXX should tmps_floor live in cxstack? */
e8eb279c 199 const SSize_t myfloor = PL_tmps_floor;
3280af22 200 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
22ade07d 201 SV* const sv = PL_tmps_stack[PL_tmps_ix--];
72581b5b
VP
202#ifdef PERL_POISON
203 PoisonWith(PL_tmps_stack + PL_tmps_ix + 1, 1, SV *, 0xAB);
22ade07d 204#endif
520275ba 205 if (LIKELY(sv)) {
463ee0b2 206 SvTEMP_off(sv);
4a9a56a7 207 SvREFCNT_dec_NN(sv); /* note, can modify tmps_ix!!! */
463ee0b2 208 }
79072805
LW
209 }
210}
211
76e3520e 212STATIC SV *
af7df257 213S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 214{
75d34a09 215 SV * osv;
eb578fdb 216 SV *sv;
79072805 217
7918f24d
NC
218 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
219
75d34a09 220 osv = *sptr;
3c84a230
DM
221 if (flags & SAVEf_KEEPOLDELEM)
222 sv = osv;
223 else {
224 sv = (*sptr = newSV(0));
225 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv))
226 mg_localize(osv, sv, cBOOL(flags & SAVEf_SETMAGIC));
79072805 227 }
75d34a09 228
79072805
LW
229 return sv;
230}
231
dfcd3de5
NC
232void
233Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3 234{
a3444cc5
DM
235 dSS_ADD;
236 SS_ADD_PTR(ptr1);
237 SS_ADD_PTR(ptr2);
238 SS_ADD_UV(type);
239 SS_ADD_END(3);
e22024d3
NC
240}
241
7a4c00b4 242SV *
864dbfa3 243Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 244{
13c59d41 245 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
246
247 PERL_ARGS_ASSERT_SAVE_SCALAR;
248
13c59d41 249 if (UNLIKELY(SvGMAGICAL(*sptr))) {
b492a59e 250 PL_localizing = 1;
13c59d41 251 (void)mg_get(*sptr);
b492a59e
DM
252 PL_localizing = 0;
253 }
13c59d41
MH
254 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
255 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
256}
257
f4dd75d9 258/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
259 * restore a global SV to its prior contents, freeing new value. */
260void
864dbfa3 261Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 262{
7918f24d
NC
263 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
264
e22024d3 265 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
266}
267
f4dd75d9
GS
268/* Like save_pptr(), but also Safefree()s the new value if it is different
269 * from the old one. Can be used to restore a global char* to its prior
270 * contents, freeing new value. */
271void
272Perl_save_generic_pvref(pTHX_ char **str)
273{
7918f24d
NC
274 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
275
e22024d3 276 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
277}
278
05ec9bb3
NIS
279/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
280 * Can be used to restore a shared global char* to its prior
281 * contents, freeing new value. */
282void
283Perl_save_shared_pvref(pTHX_ char **str)
284{
7918f24d
NC
285 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
286
e22024d3 287 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
288}
289
14f338dc
DM
290/* set the SvFLAGS specified by mask to the values in val */
291
292void
293Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
294{
a3444cc5 295 dSS_ADD;
7918f24d
NC
296
297 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
298
a3444cc5
DM
299 SS_ADD_PTR(sv);
300 SS_ADD_INT(mask);
301 SS_ADD_INT(val);
302 SS_ADD_UV(SAVEt_SET_SVFLAGS);
303 SS_ADD_END(4);
14f338dc
DM
304}
305
364bbfa4
TC
306/*
307=for apidoc save_gp
308
309Saves the current GP of gv on the save stack to be restored on scope exit.
310
311If empty is true, replace the GP with a new GP.
312
313If empty is false, mark gv with GVf_INTRO so the next reference
314assigned is localized, which is how C< local *foo = $someref; > works.
315
316=cut
317*/
318
79072805 319void
864dbfa3 320Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 321{
7918f24d
NC
322 PERL_ARGS_ASSERT_SAVE_GP;
323
10507e11 324 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 325
5f05dabc 326 if (empty) {
12816592 327 GP *gp = Perl_newGP(aTHX_ gv);
959f7ad7 328 HV * const stash = GvSTASH(gv);
3d460042
FC
329 bool isa_changed = 0;
330
331 if (stash && HvENAME(stash)) {
332 if (GvNAMELEN(gv) == 3 && strnEQ(GvNAME(gv), "ISA", 3))
333 isa_changed = TRUE;
334 else if (GvCVu(gv))
335 /* taking a method out of circulation ("local")*/
336 mro_method_changed_in(stash);
337 }
146174a9
CB
338 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
339 gp->gp_io = newIO();
340 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
341 }
c43ae56f 342 GvGP_set(gv,gp);
3d460042 343 if (isa_changed) mro_isa_changed_in(stash);
5f05dabc
PP
344 }
345 else {
44a8e56a 346 gp_ref(GvGP(gv));
5f05dabc
PP
347 GvINTRO_on(gv);
348 }
79072805 349}
79072805 350
79072805 351AV *
864dbfa3 352Perl_save_ary(pTHX_ GV *gv)
79072805 353{
901017d6 354 AV * const oav = GvAVn(gv);
67a38de0 355 AV *av;
fb73857a 356
7918f24d
NC
357 PERL_ARGS_ASSERT_SAVE_ARY;
358
5d9574c1 359 if (UNLIKELY(!AvREAL(oav) && AvREIFY(oav)))
67a38de0 360 av_reify(oav);
01433346 361 save_pushptrptr(SvREFCNT_inc_simple_NN(gv), oav, SAVEt_AV);
79072805 362
4608196e 363 GvAV(gv) = NULL;
fb73857a 364 av = GvAVn(gv);
5d9574c1 365 if (UNLIKELY(SvMAGIC(oav)))
9711599e 366 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 367 return av;
79072805
LW
368}
369
370HV *
864dbfa3 371Perl_save_hash(pTHX_ GV *gv)
79072805 372{
fb73857a
PP
373 HV *ohv, *hv;
374
7918f24d
NC
375 PERL_ARGS_ASSERT_SAVE_HASH;
376
01433346
FC
377 save_pushptrptr(
378 SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV
379 );
79072805 380
4608196e 381 GvHV(gv) = NULL;
fb73857a 382 hv = GvHVn(gv);
5d9574c1 383 if (UNLIKELY(SvMAGIC(ohv)))
9711599e 384 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 385 return hv;
79072805
LW
386}
387
388void
5aaab254 389Perl_save_item(pTHX_ SV *item)
79072805 390{
eb578fdb 391 SV * const sv = newSVsv(item);
79072805 392
7918f24d
NC
393 PERL_ARGS_ASSERT_SAVE_ITEM;
394
e22024d3
NC
395 save_pushptrptr(item, /* remember the pointer */
396 sv, /* remember the value */
397 SAVEt_ITEM);
79072805
LW
398}
399
400void
1409bc06 401Perl_save_bool(pTHX_ bool *boolp)
79072805 402{
a3444cc5 403 dSS_ADD;
7918f24d 404
1409bc06 405 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 406
a3444cc5
DM
407 SS_ADD_PTR(boolp);
408 SS_ADD_UV(SAVEt_BOOL | (*boolp << 8));
409 SS_ADD_END(2);
1409bc06
NC
410}
411
7623d426
NC
412void
413Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06 414{
a3444cc5
DM
415 dSS_ADD;
416
417 SS_ADD_INT(i);
418 SS_ADD_PTR(ptr);
419 SS_ADD_UV(type);
420 SS_ADD_END(3);
79072805
LW
421}
422
423void
1409bc06 424Perl_save_int(pTHX_ int *intp)
9febdf04 425{
d172696c 426 const int i = *intp;
9b139d09 427 UV type = ((UV)((UV)i << SAVE_TIGHT_SHIFT) | SAVEt_INT_SMALL);
d172696c
DM
428 int size = 2;
429 dSS_ADD;
7918f24d 430
1409bc06 431 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 432
5d9574c1 433 if (UNLIKELY((int)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
434 SS_ADD_INT(i);
435 type = SAVEt_INT;
436 size++;
437 }
438 SS_ADD_PTR(intp);
439 SS_ADD_UV(type);
440 SS_ADD_END(size);
9febdf04
RH
441}
442
443void
58188858
RGS
444Perl_save_I8(pTHX_ I8 *bytep)
445{
a3444cc5 446 dSS_ADD;
7918f24d
NC
447
448 PERL_ARGS_ASSERT_SAVE_I8;
449
a3444cc5
DM
450 SS_ADD_PTR(bytep);
451 SS_ADD_UV(SAVEt_I8 | ((UV)*bytep << 8));
452 SS_ADD_END(2);
58188858
RGS
453}
454
455void
87a84751
JH
456Perl_save_I16(pTHX_ I16 *intp)
457{
a3444cc5 458 dSS_ADD;
7918f24d
NC
459
460 PERL_ARGS_ASSERT_SAVE_I16;
461
a3444cc5
DM
462 SS_ADD_PTR(intp);
463 SS_ADD_UV(SAVEt_I16 | ((UV)*intp << 8));
464 SS_ADD_END(2);
87a84751
JH
465}
466
467void
864dbfa3 468Perl_save_I32(pTHX_ I32 *intp)
79072805 469{
d172696c 470 const I32 i = *intp;
9b139d09 471 UV type = ((I32)((U32)i << SAVE_TIGHT_SHIFT) | SAVEt_I32_SMALL);
d172696c
DM
472 int size = 2;
473 dSS_ADD;
7918f24d
NC
474
475 PERL_ARGS_ASSERT_SAVE_I32;
476
5d9574c1 477 if (UNLIKELY((I32)(type >> SAVE_TIGHT_SHIFT) != i)) {
d172696c
DM
478 SS_ADD_INT(i);
479 type = SAVEt_I32;
480 size++;
481 }
482 SS_ADD_PTR(intp);
483 SS_ADD_UV(type);
484 SS_ADD_END(size);
79072805
LW
485}
486
e8eb279c
FC
487void
488Perl_save_strlen(pTHX_ STRLEN *ptr)
489{
e8eb279c
FC
490 dSS_ADD;
491
492 PERL_ARGS_ASSERT_SAVE_STRLEN;
493
494 SS_ADD_IV(*ptr);
495 SS_ADD_PTR(ptr);
496 SS_ADD_UV(SAVEt_STRLEN);
497 SS_ADD_END(3);
498}
499
f8c11501
FC
500void
501Perl_save_iv(pTHX_ IV *ivp)
502{
503 PERL_ARGS_ASSERT_SAVE_IV;
504
505 SSCHECK(3);
506 SSPUSHIV(*ivp);
507 SSPUSHPTR(ivp);
508 SSPUSHUV(SAVEt_IV);
509}
510
85e6fe83
LW
511/* Cannot use save_sptr() to store a char* since the SV** cast will
512 * force word-alignment and we'll miss the pointer.
513 */
514void
864dbfa3 515Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 516{
7918f24d
NC
517 PERL_ARGS_ASSERT_SAVE_PPTR;
518
e22024d3 519 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
520}
521
79072805 522void
146174a9
CB
523Perl_save_vptr(pTHX_ void *ptr)
524{
7918f24d
NC
525 PERL_ARGS_ASSERT_SAVE_VPTR;
526
e22024d3 527 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
528}
529
530void
864dbfa3 531Perl_save_sptr(pTHX_ SV **sptr)
79072805 532{
7918f24d
NC
533 PERL_ARGS_ASSERT_SAVE_SPTR;
534
e22024d3 535 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
536}
537
c3564e5c 538void
09edbca0 539Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 540{
a3444cc5
DM
541 dSS_ADD;
542
f3548bdc 543 ASSERT_CURPAD_ACTIVE("save_padsv");
a3444cc5
DM
544 SS_ADD_PTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
545 SS_ADD_PTR(PL_comppad);
03dba561 546 SS_ADD_UV((UV)off);
a3444cc5
DM
547 SS_ADD_UV(SAVEt_PADSV_AND_MORTALIZE);
548 SS_ADD_END(4);
c3564e5c
GS
549}
550
79072805 551void
864dbfa3 552Perl_save_hptr(pTHX_ HV **hptr)
79072805 553{
7918f24d
NC
554 PERL_ARGS_ASSERT_SAVE_HPTR;
555
e22024d3 556 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
557}
558
559void
864dbfa3 560Perl_save_aptr(pTHX_ AV **aptr)
79072805 561{
7918f24d
NC
562 PERL_ARGS_ASSERT_SAVE_APTR;
563
e22024d3 564 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
565}
566
567void
2fd8beea 568Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 569{
a3444cc5
DM
570 dSS_ADD;
571 SS_ADD_PTR(ptr);
572 SS_ADD_UV(type);
573 SS_ADD_END(2);
8990e307
LW
574}
575
576void
864dbfa3 577Perl_save_clearsv(pTHX_ SV **svp)
8990e307 578{
cdcdfc56
NC
579 const UV offset = svp - PL_curpad;
580 const UV offset_shifted = offset << SAVE_TIGHT_SHIFT;
7918f24d
NC
581
582 PERL_ARGS_ASSERT_SAVE_CLEARSV;
583
f3548bdc 584 ASSERT_CURPAD_ACTIVE("save_clearsv");
623e28c6 585 SvPADSTALE_off(*svp); /* mark lexical as active */
5d9574c1 586 if (UNLIKELY((offset_shifted >> SAVE_TIGHT_SHIFT) != offset)) {
cdcdfc56
NC
587 Perl_croak(aTHX_ "panic: pad offset %"UVuf" out of range (%p-%p)",
588 offset, svp, PL_curpad);
a3444cc5 589 }
cdcdfc56 590
a3444cc5
DM
591 {
592 dSS_ADD;
593 SS_ADD_UV(offset_shifted | SAVEt_CLEARSV);
594 SS_ADD_END(1);
595 }
8990e307
LW
596}
597
598void
864dbfa3 599Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 600{
7918f24d
NC
601 PERL_ARGS_ASSERT_SAVE_DELETE;
602
85a721ca 603 save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE);
8990e307
LW
604}
605
606void
af097752
VP
607Perl_save_hdelete(pTHX_ HV *hv, SV *keysv)
608{
609 STRLEN len;
610 I32 klen;
611 const char *key;
612
613 PERL_ARGS_ASSERT_SAVE_HDELETE;
614
615 key = SvPV_const(keysv, len);
616 klen = SvUTF8(keysv) ? -(I32)len : (I32)len;
617 SvREFCNT_inc_simple_void_NN(hv);
618 save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE);
619}
620
621void
c70927a6 622Perl_save_adelete(pTHX_ AV *av, SSize_t key)
c68ec7a9 623{
c70927a6 624 dSS_ADD;
c68ec7a9
VP
625
626 PERL_ARGS_ASSERT_SAVE_ADELETE;
627
628 SvREFCNT_inc_void(av);
c70927a6
FC
629 SS_ADD_UV(key);
630 SS_ADD_PTR(av);
631 SS_ADD_IV(SAVEt_ADELETE);
632 SS_ADD_END(3);
c68ec7a9
VP
633}
634
635void
12ab1f58
JH
636Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
637{
a3444cc5 638 dSS_ADD;
7918f24d
NC
639 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
640
a3444cc5
DM
641 SS_ADD_DPTR(f);
642 SS_ADD_PTR(p);
643 SS_ADD_UV(SAVEt_DESTRUCTOR);
644 SS_ADD_END(3);
12ab1f58
JH
645}
646
647void
146174a9
CB
648Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
649{
a3444cc5
DM
650 dSS_ADD;
651
652 SS_ADD_DXPTR(f);
653 SS_ADD_PTR(p);
654 SS_ADD_UV(SAVEt_DESTRUCTOR_X);
655 SS_ADD_END(3);
146174a9
CB
656}
657
658void
da8315f8
NC
659Perl_save_hints(pTHX)
660{
20439bc7 661 COPHH *save_cophh = cophh_copy(CopHINTHASH_get(&PL_compiling));
da8315f8 662 if (PL_hints & HINT_LOCALIZE_HH) {
52c7aca6
FC
663 HV *oldhh = GvHV(PL_hintgv);
664 save_pushptri32ptr(oldhh, PL_hints, save_cophh, SAVEt_HINTS);
665 GvHV(PL_hintgv) = NULL; /* in case copying dies */
666 GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh);
be84297e 667 } else {
20439bc7 668 save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS);
da8315f8 669 }
be84297e
NC
670}
671
672static void
673S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2,
674 const int type)
675{
a3444cc5
DM
676 dSS_ADD;
677 SS_ADD_PTR(ptr1);
678 SS_ADD_INT(i);
679 SS_ADD_PTR(ptr2);
680 SS_ADD_UV(type);
681 SS_ADD_END(4);
da8315f8
NC
682}
683
684void
c70927a6
FC
685Perl_save_aelem_flags(pTHX_ AV *av, SSize_t idx, SV **sptr,
686 const U32 flags)
4e4c362e 687{
20b7effb 688 dSS_ADD;
bfc4de9f 689 SV *sv;
7918f24d 690
91d1c79f 691 PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS;
7918f24d 692
0cbee0a4 693 SvGETMAGIC(*sptr);
c70927a6
FC
694 SS_ADD_PTR(SvREFCNT_inc_simple(av));
695 SS_ADD_IV(idx);
696 SS_ADD_PTR(SvREFCNT_inc(*sptr));
697 SS_ADD_UV(SAVEt_AELEM);
698 SS_ADD_END(4);
1cdc9186
FC
699 /* The array needs to hold a reference count on its new element, so it
700 must be AvREAL. */
5d9574c1 701 if (UNLIKELY(!AvREAL(av) && AvREIFY(av)))
1cdc9186 702 av_reify(av);
91d1c79f 703 save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */
75d34a09
VP
704 if (flags & SAVEf_KEEPOLDELEM)
705 return;
bfc4de9f
DM
706 sv = *sptr;
707 /* If we're localizing a tied array element, this new sv
708 * won't actually be stored in the array - so it won't get
709 * reaped when the localize ends. Ensure it gets reaped by
710 * mortifying it instead. DAPM */
5d9574c1 711 if (UNLIKELY(SvTIED_mg((const SV *)av, PERL_MAGIC_tied)))
bfc4de9f 712 sv_2mortal(sv);
4e4c362e
GS
713}
714
715void
af7df257 716Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 717{
bfc4de9f 718 SV *sv;
7918f24d 719
af7df257 720 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 721
0cbee0a4 722 SvGETMAGIC(*sptr);
a3444cc5
DM
723 {
724 dSS_ADD;
725 SS_ADD_PTR(SvREFCNT_inc_simple(hv));
726 SS_ADD_PTR(newSVsv(key));
727 SS_ADD_PTR(SvREFCNT_inc(*sptr));
728 SS_ADD_UV(SAVEt_HELEM);
729 SS_ADD_END(4);
730 }
af7df257 731 save_scalar_at(sptr, flags);
75d34a09
VP
732 if (flags & SAVEf_KEEPOLDELEM)
733 return;
bfc4de9f
DM
734 sv = *sptr;
735 /* If we're localizing a tied hash element, this new sv
736 * won't actually be stored in the hash - so it won't get
737 * reaped when the localize ends. Ensure it gets reaped by
738 * mortifying it instead. DAPM */
5d9574c1 739 if (UNLIKELY(SvTIED_mg((const SV *)hv, PERL_MAGIC_tied)))
bfc4de9f 740 sv_2mortal(sv);
4e4c362e
GS
741}
742
2053acbf
NC
743SV*
744Perl_save_svref(pTHX_ SV **sptr)
745{
7918f24d
NC
746 PERL_ARGS_ASSERT_SAVE_SVREF;
747
2053acbf 748 SvGETMAGIC(*sptr);
e22024d3 749 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 750 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
751}
752
2ef9a108
DM
753
754void
755Perl_savetmps(pTHX)
756{
757 dSS_ADD;
758 SS_ADD_IV(PL_tmps_floor);
759 PL_tmps_floor = PL_tmps_ix;
760 SS_ADD_UV(SAVEt_TMPSFLOOR);
761 SS_ADD_END(2);
762}
763
764
455ece5e 765I32
864dbfa3 766Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 767{
eb578fdb
KW
768 const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
769 - (char*)PL_savestack);
1be36ce0
NC
770 const UV elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
771 const UV elems_shifted = elems << SAVE_TIGHT_SHIFT;
455ece5e 772
5d9574c1 773 if (UNLIKELY((elems_shifted >> SAVE_TIGHT_SHIFT) != elems))
93a641ae
DM
774 Perl_croak(aTHX_
775 "panic: save_alloc elems %"UVuf" out of range (%"IVdf"-%"IVdf")",
776 elems, (IV)size, (IV)pad);
1be36ce0
NC
777
778 SSGROW(elems + 1);
455ece5e
AD
779
780 PL_savestack_ix += elems;
1be36ce0 781 SSPUSHUV(SAVEt_ALLOC | elems_shifted);
455ece5e
AD
782 return start;
783}
784
03dba561 785
9a2fefd6
DM
786static U8 arg_counts[] = {
787 0, /* SAVEt_ALLOC */
788 0, /* SAVEt_CLEARPADRANGE */
789 0, /* SAVEt_CLEARSV */
790 0, /* SAVEt_REGCONTEXT */
791 1, /* SAVEt_TMPSFLOOR */
792 1, /* SAVEt_BOOL */
793 1, /* SAVEt_COMPILE_WARNINGS */
794 1, /* SAVEt_COMPPAD */
795 1, /* SAVEt_FREECOPHH */
796 1, /* SAVEt_FREEOP */
797 1, /* SAVEt_FREEPV */
798 1, /* SAVEt_FREESV */
799 1, /* SAVEt_I16 */
800 1, /* SAVEt_I32_SMALL */
801 1, /* SAVEt_I8 */
802 1, /* SAVEt_INT_SMALL */
803 1, /* SAVEt_MORTALIZESV */
804 1, /* SAVEt_NSTAB */
805 1, /* SAVEt_OP */
806 1, /* SAVEt_PARSER */
807 1, /* SAVEt_STACK_POS */
808 1, /* SAVEt_READONLY_OFF */
809 1, /* SAVEt_FREEPADNAME */
810 2, /* SAVEt_AV */
811 2, /* SAVEt_DESTRUCTOR */
812 2, /* SAVEt_DESTRUCTOR_X */
813 2, /* SAVEt_GENERIC_PVREF */
814 2, /* SAVEt_GENERIC_SVREF */
815 2, /* SAVEt_GP */
816 2, /* SAVEt_GVSV */
817 2, /* SAVEt_HINTS */
818 2, /* SAVEt_HPTR */
819 2, /* SAVEt_HV */
820 2, /* SAVEt_I32 */
821 2, /* SAVEt_INT */
822 2, /* SAVEt_ITEM */
823 2, /* SAVEt_IV */
824 2, /* SAVEt_LONG */
825 2, /* SAVEt_PPTR */
826 2, /* SAVEt_SAVESWITCHSTACK */
827 2, /* SAVEt_SHARED_PVREF */
828 2, /* SAVEt_SPTR */
829 2, /* SAVEt_STRLEN */
830 2, /* SAVEt_SV */
831 2, /* SAVEt_SVREF */
832 2, /* SAVEt_VPTR */
833 2, /* SAVEt_ADELETE */
834 2, /* SAVEt_APTR */
835 3, /* SAVEt_HELEM */
836 3, /* SAVEt_PADSV_AND_MORTALIZE*/
837 3, /* SAVEt_SET_SVFLAGS */
838 3, /* SAVEt_GVSLOT */
839 3, /* SAVEt_AELEM */
840 3 /* SAVEt_DELETE */
841};
842
03dba561 843
462e5cf6 844void
864dbfa3 845Perl_leave_scope(pTHX_ I32 base)
79072805 846{
302c0c93 847 /* Localise the effects of the TAINT_NOT inside the loop. */
284167a5 848 bool was = TAINT_get;
79072805 849
5d9574c1 850 if (UNLIKELY(base < -1))
5637ef5b 851 Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base);
1c98cc53
DM
852 DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n",
853 (long)PL_savestack_ix, (long)base));
3280af22 854 while (PL_savestack_ix > base) {
03dba561
DM
855 UV uv;
856 U8 type;
03dba561 857 SV **svp;
9a2fefd6
DM
858 I32 i;
859 ANY *ap; /* arg pointer */
c9728782 860 ANY a0, a1, a2; /* up to 3 args */
03dba561 861
c6ae7647
NC
862 TAINT_NOT;
863
03dba561 864 {
9a2fefd6 865 U8 argcount;
03dba561 866 I32 ix = PL_savestack_ix - 1;
9a2fefd6
DM
867
868 ap = &PL_savestack[ix];
869 uv = ap->any_uv;
03dba561 870 type = (U8)uv & SAVE_MASK;
9a2fefd6
DM
871 argcount = arg_counts[type];
872 PL_savestack_ix = ix - argcount;
873 ap -= argcount;
03dba561
DM
874 }
875
c6bf6a65 876 switch (type) {
79072805 877 case SAVEt_ITEM: /* normal string */
c9728782
DM
878 a0 = ap[0]; a1 = ap[1];
879 sv_replace(a0.any_sv, a1.any_sv);
880 if (UNLIKELY(SvSMAGICAL(a0.any_sv))) {
b492a59e 881 PL_localizing = 2;
c9728782 882 mg_set(a0.any_sv);
b492a59e
DM
883 PL_localizing = 0;
884 }
79072805 885 break;
03dba561
DM
886
887 /* This would be a mathom, but Perl_save_svref() calls a static
888 function, S_save_scalar_at(), so has to stay in this file. */
889 case SAVEt_SVREF: /* scalar reference */
c9728782
DM
890 a0 = ap[0]; a1 = ap[1];
891 svp = a0.any_svp;
892 a0.any_sv = NULL; /* what to refcnt_dec */
03dba561
DM
893 goto restore_sv;
894
8aacddc1 895 case SAVEt_SV: /* scalar reference */
c9728782
DM
896 a0 = ap[0]; a1 = ap[1];
897 svp = &GvSV(a0.any_gv);
2053acbf 898 restore_sv:
03dba561 899 {
c9728782 900 /* do *svp = a1 and free a0 */
03dba561 901 SV * const sv = *svp;
c9728782 902 *svp = a1.any_sv;
2053acbf 903 SvREFCNT_dec(sv);
c9728782
DM
904 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
905 /* mg_set could die, skipping the freeing of a0 and
906 * a1; Ensure that they're always freed in that case */
2baebb98 907 dSS_ADD;
c9728782 908 SS_ADD_PTR(a1.any_sv);
2baebb98 909 SS_ADD_UV(SAVEt_FREESV);
c9728782 910 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
911 SS_ADD_UV(SAVEt_FREESV);
912 SS_ADD_END(4);
b492a59e 913 PL_localizing = 2;
c9728782 914 mg_set(a1.any_sv);
b492a59e 915 PL_localizing = 0;
2baebb98 916 break;
b492a59e 917 }
c9728782
DM
918 SvREFCNT_dec_NN(a1.any_sv);
919 SvREFCNT_dec(a0.any_sv);
2053acbf 920 break;
03dba561 921 }
c9728782 922
8aacddc1 923 case SAVEt_GENERIC_PVREF: /* generic pv */
c9728782
DM
924 a0 = ap[0]; a1 = ap[1];
925 if (*a1.any_pvp != a0.any_pv) {
926 Safefree(*a1.any_pvp);
927 *a1.any_pvp = a0.any_pv;
f4dd75d9
GS
928 }
929 break;
c9728782 930
05ec9bb3 931 case SAVEt_SHARED_PVREF: /* shared pv */
c9728782
DM
932 a0 = ap[0]; a1 = ap[1];
933 if (*a0.any_pvp != a1.any_pv) {
5e54c26f 934#ifdef NETWARE
c9728782 935 PerlMem_free(*a0.any_pvp);
5e54c26f 936#else
c9728782 937 PerlMemShared_free(*a0.any_pvp);
5e54c26f 938#endif
c9728782 939 *a0.any_pvp = a1.any_pv;
05ec9bb3
NIS
940 }
941 break;
c9728782 942
f83b46a0 943 case SAVEt_GVSV: /* scalar slot in GV */
c9728782
DM
944 a0 = ap[0]; a1 = ap[1];
945 svp = &GvSV(a0.any_gv);
f83b46a0 946 goto restore_svp;
c9728782 947
8aacddc1 948 case SAVEt_GENERIC_SVREF: /* generic sv */
c9728782
DM
949 a0 = ap[0]; a1 = ap[1];
950 svp = a0.any_svp;
f83b46a0 951 restore_svp:
03dba561 952 {
c9728782 953 /* do *svp = a1 */
03dba561 954 SV * const sv = *svp;
c9728782 955 *svp = a1.any_sv;
f4dd75d9 956 SvREFCNT_dec(sv);
c9728782 957 SvREFCNT_dec(a1.any_sv);
b9d12d37 958 break;
03dba561 959 }
c9728782 960
db9306af 961 case SAVEt_GVSLOT: /* any slot in GV */
03dba561 962 {
9a2fefd6 963 HV * hv;
c9728782
DM
964 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
965 hv = GvSTASH(a0.any_gv);
966 svp = a1.any_svp;
db9306af 967 if (hv && HvENAME(hv) && (
c9728782 968 (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV)
03dba561 969 || (*svp && SvTYPE(*svp) == SVt_PVCV)
db9306af
FC
970 ))
971 {
c9728782
DM
972 if ((char *)svp < (char *)GvGP(a0.any_gv)
973 || (char *)svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp)
974 || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */
db9306af
FC
975 PL_sub_generation++;
976 else mro_method_changed_in(hv);
977 }
c9728782 978 a1.any_sv = a2.any_sv;
db9306af 979 goto restore_svp;
03dba561 980 }
c9728782 981
8aacddc1 982 case SAVEt_AV: /* array reference */
c9728782
DM
983 a0 = ap[0]; a1 = ap[1];
984 SvREFCNT_dec(GvAV(a0.any_gv));
985 GvAV(a0.any_gv) = a1.any_av;
2baebb98 986 avhv_common:
c9728782
DM
987 if (UNLIKELY(SvSMAGICAL(a1.any_sv))) {
988 /* mg_set might die, so make sure a0 isn't leaked */
2baebb98 989 dSS_ADD;
c9728782 990 SS_ADD_PTR(a0.any_sv);
2baebb98
DM
991 SS_ADD_UV(SAVEt_FREESV);
992 SS_ADD_END(2);
b492a59e 993 PL_localizing = 2;
c9728782 994 mg_set(a1.any_sv);
b492a59e 995 PL_localizing = 0;
2baebb98 996 break;
b492a59e 997 }
c9728782 998 SvREFCNT_dec_NN(a0.any_sv);
8aacddc1 999 break;
c9728782 1000
8aacddc1 1001 case SAVEt_HV: /* hash reference */
c9728782
DM
1002 a0 = ap[0]; a1 = ap[1];
1003 SvREFCNT_dec(GvHV(a0.any_gv));
1004 GvHV(a0.any_gv) = a1.any_hv;
2baebb98
DM
1005 goto avhv_common;
1006
994d373a 1007 case SAVEt_INT_SMALL:
c9728782
DM
1008 a0 = ap[0];
1009 *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT);
994d373a 1010 break;
c9728782 1011
79072805 1012 case SAVEt_INT: /* int reference */
c9728782
DM
1013 a0 = ap[0]; a1 = ap[1];
1014 *(int*)a1.any_ptr = (int)a0.any_i32;
79072805 1015 break;
c9728782 1016
e8eb279c 1017 case SAVEt_STRLEN: /* STRLEN/size_t ref */
c9728782
DM
1018 a0 = ap[0]; a1 = ap[1];
1019 *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv;
e8eb279c 1020 break;
c9728782 1021
2ef9a108 1022 case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */
c9728782
DM
1023 a0 = ap[0];
1024 PL_tmps_floor = (SSize_t)a0.any_iv;
2ef9a108 1025 break;
c9728782 1026
9febdf04 1027 case SAVEt_BOOL: /* bool reference */
c9728782
DM
1028 a0 = ap[0];
1029 *(bool*)a0.any_ptr = cBOOL(uv >> 8);
9a9b5ec9
DM
1030#ifdef NO_TAINT_SUPPORT
1031 PERL_UNUSED_VAR(was);
1032#else
c9728782 1033 if (UNLIKELY(a0.any_ptr == &(TAINT_get))) {
b6f93e7a
KW
1034 /* If we don't update <was>, to reflect what was saved on the
1035 * stack for PL_tainted, then we will overwrite this attempt to
1036 * restore it when we exit this routine. Note that this won't
1037 * work if this value was saved in a wider-than necessary type,
1038 * such as I32 */
c9728782 1039 was = *(bool*)a0.any_ptr;
b6f93e7a 1040 }
284167a5 1041#endif
9febdf04 1042 break;
c9728782 1043
89abef21 1044 case SAVEt_I32_SMALL:
c9728782
DM
1045 a0 = ap[0];
1046 *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT);
89abef21 1047 break;
c9728782 1048
79072805 1049 case SAVEt_I32: /* I32 reference */
c9728782 1050 a0 = ap[0]; a1 = ap[1];
3235b7a3 1051#ifdef PERL_DEBUG_READONLY_OPS
c9728782 1052 if (*(I32*)a1.any_ptr != a0.any_i32)
3235b7a3 1053#endif
c9728782 1054 *(I32*)a1.any_ptr = a0.any_i32;
79072805 1055 break;
c9728782 1056
79072805 1057 case SAVEt_SPTR: /* SV* reference */
c9728782
DM
1058 a0 = ap[0]; a1 = ap[1];
1059 *a1.any_svp= a0.any_sv;
79072805 1060 break;
c9728782 1061
146174a9 1062 case SAVEt_VPTR: /* random* reference */
85e6fe83 1063 case SAVEt_PPTR: /* char* reference */
c9728782
DM
1064 a0 = ap[0]; a1 = ap[1];
1065 *a1.any_pvp = a0.any_pv;
85e6fe83 1066 break;
c9728782 1067
79072805 1068 case SAVEt_HPTR: /* HV* reference */
c9728782
DM
1069 a0 = ap[0]; a1 = ap[1];
1070 *(HV**)a1.any_ptr = a0.any_hv;
79072805 1071 break;
c9728782 1072
79072805 1073 case SAVEt_APTR: /* AV* reference */
c9728782
DM
1074 a0 = ap[0]; a1 = ap[1];
1075 *(AV**)a1.any_ptr = a0.any_av;
79072805 1076 break;
c9728782 1077
fb73857a 1078 case SAVEt_GP: /* scalar reference */
03dba561
DM
1079 {
1080 HV *hv;
9a2fefd6
DM
1081 bool had_method;
1082
c9728782 1083 a0 = ap[0]; a1 = ap[1];
03dba561 1084 /* possibly taking a method out of circulation */
c9728782
DM
1085 had_method = !!GvCVu(a0.any_gv);
1086 gp_free(a0.any_gv);
1087 GvGP_set(a0.any_gv, (GP*)a1.any_ptr);
1088 if ((hv=GvSTASH(a0.any_gv)) && HvENAME_get(hv)) {
1089 if ( GvNAMELEN(a0.any_gv) == 3
1090 && strnEQ(GvNAME(a0.any_gv), "ISA", 3)
03dba561
DM
1091 )
1092 mro_isa_changed_in(hv);
c9728782 1093 else if (had_method || GvCVu(a0.any_gv))
03dba561 1094 /* putting a method back into circulation ("local")*/
c9728782 1095 gv_method_changed(a0.any_gv);
3d460042 1096 }
c9728782 1097 SvREFCNT_dec_NN(a0.any_gv);
8aacddc1 1098 break;
03dba561 1099 }
c9728782 1100
8990e307 1101 case SAVEt_FREESV:
c9728782
DM
1102 a0 = ap[0];
1103 SvREFCNT_dec(a0.any_sv);
8990e307 1104 break;
c9728782 1105
0f94cb1f 1106 case SAVEt_FREEPADNAME:
c9728782
DM
1107 a0 = ap[0];
1108 PadnameREFCNT_dec((PADNAME *)a0.any_ptr);
0f94cb1f 1109 break;
c9728782 1110
3987a177 1111 case SAVEt_FREECOPHH:
c9728782
DM
1112 a0 = ap[0];
1113 cophh_free((COPHH *)a0.any_ptr);
3987a177 1114 break;
c9728782 1115
26d9b02f 1116 case SAVEt_MORTALIZESV:
c9728782
DM
1117 a0 = ap[0];
1118 sv_2mortal(a0.any_sv);
26d9b02f 1119 break;
c9728782 1120
8990e307 1121 case SAVEt_FREEOP:
c9728782 1122 a0 = ap[0];
5e5ba94b 1123 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP");
c9728782 1124 op_free((OP*)a0.any_ptr);
8990e307 1125 break;
c9728782 1126
8990e307 1127 case SAVEt_FREEPV:
c9728782
DM
1128 a0 = ap[0];
1129 Safefree(a0.any_ptr);
8990e307 1130 break;
4e09461c 1131
4e09461c
DM
1132 case SAVEt_CLEARPADRANGE:
1133 i = (I32)((uv >> SAVE_TIGHT_SHIFT) & OPpPADRANGE_COUNTMASK);
1134 svp = &PL_curpad[uv >>
1135 (OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)] + i - 1;
1136 goto clearsv;
8990e307 1137 case SAVEt_CLEARSV:
4e09461c
DM
1138 svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT];
1139 i = 1;
1140 clearsv:
1141 for (; i; i--, svp--) {
9a2fefd6 1142 SV *sv = *svp;
528ad060
DM
1143
1144 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
1145 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
1146 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
1147 (long)(svp-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
1148 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
1149 ));
1150
1151 /* Can clear pad variable in place? */
9af15990 1152 if (SvREFCNT(sv) == 1 && !SvOBJECT(sv)) {
a07f0bef 1153
a07f0bef
DM
1154 /* these flags are the union of all the relevant flags
1155 * in the individual conditions within */
1156 if (UNLIKELY(SvFLAGS(sv) & (
a623f893 1157 SVf_READONLY|SVf_PROTECT /*for SvREADONLY_off*/
a07f0bef 1158 | (SVs_GMG|SVs_SMG|SVs_RMG) /* SvMAGICAL() */
7532eaae 1159 | SVf_OOK
a07f0bef
DM
1160 | SVf_THINKFIRST)))
1161 {
7500fc82
DM
1162 /* if a my variable that was made readonly is
1163 * going out of scope, we want to remove the
1164 * readonlyness so that it can go out of scope
1165 * quietly
1166 */
57c404c9 1167 if (SvREADONLY(sv))
7500fc82
DM
1168 SvREADONLY_off(sv);
1169
7532eaae
DM
1170 if (SvOOK(sv)) { /* OOK or HvAUX */
1171 if (SvTYPE(sv) == SVt_PVHV)
1172 Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv));
1173 else
1174 sv_backoff(sv);
1175 }
1176
7500fc82 1177 if (SvMAGICAL(sv)) {
7532eaae
DM
1178 /* note that backrefs (either in HvAUX or magic)
1179 * must be removed before other magic */
7500fc82
DM
1180 sv_unmagic(sv, PERL_MAGIC_backref);
1181 if (SvTYPE(sv) != SVt_PVCV)
1182 mg_free(sv);
1183 }
1184 if (SvTHINKFIRST(sv))
1185 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF
1186 |SV_COW_DROP_PV);
528ad060 1187
a07f0bef 1188 }
528ad060
DM
1189 switch (SvTYPE(sv)) {
1190 case SVt_NULL:
1191 break;
1192 case SVt_PVAV:
1193 av_clear(MUTABLE_AV(sv));
1194 break;
1195 case SVt_PVHV:
1196 hv_clear(MUTABLE_HV(sv));
1197 break;
1198 case SVt_PVCV:
1199 {
db5cc3ee 1200 HEK *hek =
db5cc3ee 1201 CvNAMED(sv)
9c98a81f
FC
1202 ? CvNAME_HEK((CV *)sv)
1203 : GvNAME_HEK(CvGV(sv));
528ad060 1204 assert(hek);
6110d17a 1205 (void)share_hek_hek(hek);
528ad060
DM
1206 cv_undef((CV *)sv);
1207 CvNAME_HEK_set(sv, hek);
f3feca7a 1208 CvLEXICAL_on(sv);
528ad060
DM
1209 break;
1210 }
1211 default:
c79d0076
NC
1212 /* This looks odd, but these two macros are for use in
1213 expressions and finish with a trailing comma, so
1214 adding a ; after them would be wrong. */
1215 assert_not_ROK(sv)
1216 assert_not_glob(sv)
5c85b638 1217 SvFLAGS(sv) &=~ (SVf_OK|SVf_IVisUV|SVf_UTF8);
528ad060
DM
1218 break;
1219 }
82e85a9c 1220 SvPADTMP_off(sv);
528ad060
DM
1221 SvPADSTALE_on(sv); /* mark as no longer live */
1222 }
1223 else { /* Someone has a claim on this, so abandon it. */
528ad060
DM
1224 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
1225 case SVt_PVAV: *svp = MUTABLE_SV(newAV()); break;
1226 case SVt_PVHV: *svp = MUTABLE_SV(newHV()); break;
1227 case SVt_PVCV:
1228 {
9c98a81f
FC
1229 HEK * const hek = CvNAMED(sv)
1230 ? CvNAME_HEK((CV *)sv)
1231 : GvNAME_HEK(CvGV(sv));
1232
528ad060
DM
1233 /* Create a stub */
1234 *svp = newSV_type(SVt_PVCV);
1235
1236 /* Share name */
528ad060 1237 CvNAME_HEK_set(*svp,
9c98a81f 1238 share_hek_hek(hek));
f3feca7a 1239 CvLEXICAL_on(*svp);
528ad060
DM
1240 break;
1241 }
1242 default: *svp = newSV(0); break;
1243 }
4a9a56a7 1244 SvREFCNT_dec_NN(sv); /* Cast current value to the winds. */
528ad060
DM
1245 /* preserve pad nature, but also mark as not live
1246 * for any closure capturing */
145bf8ee 1247 SvFLAGS(*svp) |= SVs_PADSTALE;
528ad060 1248 }
4e09461c 1249 }
8990e307 1250 break;
c9728782 1251
8990e307 1252 case SAVEt_DELETE:
c9728782
DM
1253 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1254 (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD);
1255 SvREFCNT_dec(a2.any_hv);
1256 Safefree(a0.any_ptr);
8990e307 1257 break;
c9728782 1258
c68ec7a9 1259 case SAVEt_ADELETE:
c9728782
DM
1260 a0 = ap[0]; a1 = ap[1];
1261 (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD);
1262 SvREFCNT_dec(a1.any_av);
c68ec7a9 1263 break;
c9728782 1264
146174a9 1265 case SAVEt_DESTRUCTOR_X:
c9728782
DM
1266 a0 = ap[0]; a1 = ap[1];
1267 (*a0.any_dxptr)(aTHX_ a1.any_ptr);
a0d0e21e 1268 break;
c9728782 1269
a0d0e21e 1270 case SAVEt_REGCONTEXT:
e0fa7e2b 1271 /* regexp must have croaked */
455ece5e 1272 case SAVEt_ALLOC:
1be36ce0 1273 PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT;
a0d0e21e 1274 break;
c9728782 1275
55497cff 1276 case SAVEt_STACK_POS: /* Position on Perl stack */
c9728782
DM
1277 a0 = ap[0];
1278 PL_stack_sp = PL_stack_base + a0.any_i32;
55497cff 1279 break;
c9728782 1280
161b7d16 1281 case SAVEt_AELEM: /* array element */
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);
c9728782 1291 a1.any_sv = a2.any_sv;
4e4c362e
GS
1292 goto restore_sv;
1293 }
1294 }
c9728782
DM
1295 SvREFCNT_dec(a0.any_av);
1296 SvREFCNT_dec(a2.any_sv);
4e4c362e 1297 break;
c9728782 1298
161b7d16 1299 case SAVEt_HELEM: /* hash element */
03dba561 1300 {
9a2fefd6
DM
1301 HE *he;
1302
c9728782
DM
1303 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1304 he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0);
1305 SvREFCNT_dec(a1.any_sv);
5d9574c1 1306 if (LIKELY(he)) {
03dba561 1307 const SV * const oval = HeVAL(he);
5d9574c1 1308 if (LIKELY(oval && oval != &PL_sv_undef)) {
03dba561 1309 svp = &HeVAL(he);
c9728782 1310 if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied)))
03dba561 1311 SvREFCNT_inc_void(*svp);
c9728782 1312 a1.any_sv = a2.any_sv;
4e4c362e
GS
1313 goto restore_sv;
1314 }
1315 }
c9728782
DM
1316 SvREFCNT_dec(a0.any_hv);
1317 SvREFCNT_dec(a2.any_sv);
4e4c362e 1318 break;
03dba561 1319 }
462e5cf6 1320 case SAVEt_OP:
c9728782
DM
1321 a0 = ap[0];
1322 PL_op = (OP*)a0.any_ptr;
462e5cf6 1323 break;
c9728782 1324
25eaa213 1325 case SAVEt_HINTS:
c9728782 1326 a0 = ap[0]; a1 = ap[1];
3607ca02
FC
1327 if ((PL_hints & HINT_LOCALIZE_HH)) {
1328 while (GvHV(PL_hintgv)) {
2653c1e3 1329 HV *hv = GvHV(PL_hintgv);
045ac317 1330 GvHV(PL_hintgv) = NULL;
2653c1e3 1331 SvREFCNT_dec(MUTABLE_SV(hv));
3607ca02 1332 }
045ac317 1333 }
20439bc7 1334 cophh_free(CopHINTHASH_get(&PL_compiling));
c9728782
DM
1335 CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr);
1336 *(I32*)&PL_hints = a0.any_i32;
dfa41748 1337 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 1338 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 1339 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
2653c1e3
DM
1340 }
1341 if (!GvHV(PL_hintgv)) {
a3fb8386
FC
1342 /* Need to add a new one manually, else rv2hv can
1343 add one via GvHVn and it won't have the magic set. */
5b9c0671
NC
1344 HV *const hv = newHV();
1345 hv_magic(hv, NULL, PERL_MAGIC_hints);
1346 GvHV(PL_hintgv) = hv;
dfa41748 1347 }
5b9c0671 1348 assert(GvHV(PL_hintgv));
b3ac6de7 1349 break;
c9728782 1350
cb50131a 1351 case SAVEt_COMPPAD:
c9728782
DM
1352 a0 = ap[0];
1353 PL_comppad = (PAD*)a0.any_ptr;
5d9574c1 1354 if (LIKELY(PL_comppad))
cb50131a
CB
1355 PL_curpad = AvARRAY(PL_comppad);
1356 else
4608196e 1357 PL_curpad = NULL;
cb50131a 1358 break;
c9728782 1359
09edbca0 1360 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 1361 {
09edbca0 1362 SV **svp;
9a2fefd6 1363
c9728782
DM
1364 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1365 assert (a1.any_ptr);
1366 svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv;
b405d38b
DM
1367 /* This mortalizing used to be done by CX_POOPLOOP() via
1368 itersave. But as we have all the information here, we
1369 can do it here, save even having to have itersave in
1370 the struct.
1371 */
09edbca0 1372 sv_2mortal(*svp);
c9728782 1373 *svp = a0.any_sv;
c3564e5c
GS
1374 }
1375 break;
c9728782 1376
8b7059b1
DM
1377 case SAVEt_SAVESWITCHSTACK:
1378 {
1379 dSP;
9a2fefd6 1380
c9728782
DM
1381 a0 = ap[0]; a1 = ap[1];
1382 SWITCHSTACK(a1.any_av, a0.any_av);
1383 PL_curstackinfo->si_stack = a0.any_av;
8b7059b1
DM
1384 }
1385 break;
c9728782 1386
14f338dc 1387 case SAVEt_SET_SVFLAGS:
c9728782
DM
1388 a0 = ap[0]; a1 = ap[1]; a2 = ap[2];
1389 SvFLAGS(a0.any_sv) &= ~(a1.any_u32);
1390 SvFLAGS(a0.any_sv) |= a2.any_u32;
14f338dc 1391 break;
95e06916 1392
95e06916
NC
1393 /* These are only saved in mathoms.c */
1394 case SAVEt_NSTAB:
c9728782
DM
1395 a0 = ap[0];
1396 (void)sv_clear(a0.any_sv);
95e06916 1397 break;
c9728782 1398
2053acbf 1399 case SAVEt_LONG: /* long reference */
c9728782
DM
1400 a0 = ap[0]; a1 = ap[1];
1401 *(long*)a1.any_ptr = a0.any_long;
2053acbf 1402 break;
c9728782 1403
95e06916 1404 case SAVEt_IV: /* IV reference */
c9728782
DM
1405 a0 = ap[0]; a1 = ap[1];
1406 *(IV*)a1.any_ptr = a0.any_iv;
95e06916
NC
1407 break;
1408
2053acbf 1409 case SAVEt_I16: /* I16 reference */
c9728782
DM
1410 a0 = ap[0];
1411 *(I16*)a0.any_ptr = (I16)(uv >> 8);
2053acbf 1412 break;
c9728782 1413
2053acbf 1414 case SAVEt_I8: /* I8 reference */
c9728782
DM
1415 a0 = ap[0];
1416 *(I8*)a0.any_ptr = (I8)(uv >> 8);
2053acbf 1417 break;
c9728782 1418
2053acbf 1419 case SAVEt_DESTRUCTOR:
c9728782
DM
1420 a0 = ap[0]; a1 = ap[1];
1421 (*a0.any_dptr)(a1.any_ptr);
2053acbf 1422 break;
c9728782 1423
68da3b2f 1424 case SAVEt_COMPILE_WARNINGS:
c9728782 1425 a0 = ap[0];
68da3b2f
NC
1426 if (!specialWARN(PL_compiling.cop_warnings))
1427 PerlMemShared_free(PL_compiling.cop_warnings);
c9728782 1428 PL_compiling.cop_warnings = (STRLEN*)a0.any_ptr;
72dc9ed5 1429 break;
c9728782 1430
7c197c94 1431 case SAVEt_PARSER:
c9728782
DM
1432 a0 = ap[0];
1433 parser_free((yy_parser *)a0.any_ptr);
7c197c94 1434 break;
c9728782 1435
20d5dc23 1436 case SAVEt_READONLY_OFF:
c9728782
DM
1437 a0 = ap[0];
1438 SvREADONLY_off(a0.any_sv);
20d5dc23 1439 break;
c9728782 1440
79072805 1441 default:
5637ef5b 1442 Perl_croak(aTHX_ "panic: leave_scope inconsistency %u", type);
79072805
LW
1443 }
1444 }
302c0c93 1445
284167a5 1446 TAINT_set(was);
79072805 1447}
8990e307 1448
8990e307 1449void
864dbfa3 1450Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1451{
7918f24d
NC
1452 PERL_ARGS_ASSERT_CX_DUMP;
1453
35ff7856 1454#ifdef DEBUGGING
22c35a8c 1455 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1456 if (CxTYPE(cx) != CXt_SUBST) {
e8d9e9d0 1457 const char *gimme_text;
760ac839 1458 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1459 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1460 PTR2UV(cx->blk_oldcop));
760ac839
LW
1461 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1462 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
e992140c 1463 PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix);
146174a9
CB
1464 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1465 PTR2UV(cx->blk_oldpm));
e8d9e9d0
VP
1466 switch (cx->blk_gimme) {
1467 case G_VOID:
1468 gimme_text = "VOID";
1469 break;
1470 case G_SCALAR:
1471 gimme_text = "SCALAR";
1472 break;
1473 case G_ARRAY:
1474 gimme_text = "LIST";
1475 break;
1476 default:
1477 gimme_text = "UNKNOWN";
1478 break;
1479 }
1480 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text);
8990e307 1481 }
6b35e009 1482 switch (CxTYPE(cx)) {
8990e307
LW
1483 case CXt_NULL:
1484 case CXt_BLOCK:
1485 break;
146174a9 1486 case CXt_FORMAT:
f9c764c5
NC
1487 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1488 PTR2UV(cx->blk_format.cv));
1489 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1490 PTR2UV(cx->blk_format.gv));
1491 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1492 PTR2UV(cx->blk_format.dfoutgv));
1493 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1494 (int)CxHASARGS(cx));
f9c764c5
NC
1495 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1496 PTR2UV(cx->blk_format.retop));
146174a9 1497 break;
8990e307 1498 case CXt_SUB:
146174a9
CB
1499 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1500 PTR2UV(cx->blk_sub.cv));
760ac839 1501 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1502 (long)cx->blk_sub.olddepth);
760ac839 1503 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1504 (int)CxHASARGS(cx));
1505 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1506 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1507 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1508 break;
1509 case CXt_EVAL:
760ac839 1510 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1511 (long)CxOLD_IN_EVAL(cx));
760ac839 1512 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1513 PL_op_name[CxOLD_OP_TYPE(cx)],
1514 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1515 if (cx->blk_eval.old_namesv)
1516 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1517 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1518 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1519 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1520 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1521 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1522 break;
1523
93661e56 1524 case CXt_LOOP_PLAIN:
c6fdafd0 1525 case CXt_LOOP_LAZYIV:
d01136d6 1526 case CXt_LOOP_LAZYSV:
93661e56
DM
1527 case CXt_LOOP_LIST:
1528 case CXt_LOOP_ARY:
0cbdab38 1529 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
022eaa24
NC
1530 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1531 PTR2UV(cx->blk_loop.my_op));
0925dc7f
DM
1532 if (CxTYPE(cx) != CXt_LOOP_PLAIN) {
1533 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1534 PTR2UV(CxITERVAR(cx)));
1535 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1536 PTR2UV(cx->blk_loop.itersave));
1537 /* XXX: not accurate for LAZYSV/IV/LIST */
1538 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1539 PTR2UV(cx->blk_loop.state_u.ary.ary));
1540 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1541 (long)cx->blk_loop.state_u.ary.ix);
1542 }
8990e307
LW
1543 break;
1544
1545 case CXt_SUBST:
760ac839 1546 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1547 (long)cx->sb_iters);
760ac839 1548 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1549 (long)cx->sb_maxiters);
35ef4773
GS
1550 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1551 (long)cx->sb_rflags);
760ac839 1552 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1553 (long)CxONCE(cx));
760ac839 1554 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1555 cx->sb_orig);
146174a9
CB
1556 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1557 PTR2UV(cx->sb_dstr));
1558 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1559 PTR2UV(cx->sb_targ));
1560 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1561 PTR2UV(cx->sb_s));
1562 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1563 PTR2UV(cx->sb_m));
1564 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1565 PTR2UV(cx->sb_strend));
1566 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1567 PTR2UV(cx->sb_rxres));
8990e307
LW
1568 break;
1569 }
65e66c80 1570#else
96a5add6 1571 PERL_UNUSED_CONTEXT;
65e66c80 1572 PERL_UNUSED_ARG(cx);
17c3b450 1573#endif /* DEBUGGING */
35ff7856 1574}
241d1a3b
NC
1575
1576/*
14d04a33 1577 * ex: set ts=8 sts=4 sw=4 et:
37442d52 1578 */