This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Move the implmentation of SAVEHINTS() into a new Perl_save_hints() in
[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**
864dbfa3 30Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
a0d0e21e 31{
97aff369 32 dVAR;
7918f24d
NC
33
34 PERL_ARGS_ASSERT_STACK_GROW;
35
3280af22 36 PL_stack_sp = sp;
2ce36478 37#ifndef STRESS_REALLOC
3280af22 38 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
2ce36478 39#else
6b88bc9c 40 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
2ce36478 41#endif
3280af22 42 return PL_stack_sp;
a0d0e21e
LW
43}
44
2ce36478
SM
45#ifndef STRESS_REALLOC
46#define GROW(old) ((old) * 3 / 2)
47#else
48#define GROW(old) ((old) + 1)
49#endif
50
e336de0d 51PERL_SI *
864dbfa3 52Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d 53{
97aff369 54 dVAR;
e336de0d 55 PERL_SI *si;
a02a5408 56 Newx(si, 1, PERL_SI);
e336de0d
GS
57 si->si_stack = newAV();
58 AvREAL_off(si->si_stack);
59 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 60 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
61 AvFILLp(si->si_stack) = 0;
62 si->si_prev = 0;
63 si->si_next = 0;
64 si->si_cxmax = cxitems - 1;
65 si->si_cxix = -1;
e788e7d3 66 si->si_type = PERLSI_UNDEF;
a02a5408 67 Newx(si->si_cxstack, cxitems, PERL_CONTEXT);
9965345d
JH
68 /* Without any kind of initialising PUSHSUBST()
69 * in pp_subst() will read uninitialised heap. */
7e337ee0 70 PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
71 return si;
72}
73
79072805 74I32
864dbfa3 75Perl_cxinc(pTHX)
79072805 76{
97aff369 77 dVAR;
a3b680e6 78 const IV old_max = cxstack_max;
2ce36478 79 cxstack_max = GROW(cxstack_max);
c09156bb 80 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
9965345d
JH
81 /* Without any kind of initialising deep enough recursion
82 * will end up reading uninitialised PERL_CONTEXTs. */
7e337ee0 83 PoisonNew(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
84 return cxstack_ix + 1;
85}
86
79072805 87void
864dbfa3 88Perl_push_scope(pTHX)
79072805 89{
97aff369 90 dVAR;
3280af22
NIS
91 if (PL_scopestack_ix == PL_scopestack_max) {
92 PL_scopestack_max = GROW(PL_scopestack_max);
93 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 94 }
3280af22 95 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
96
97}
98
99void
864dbfa3 100Perl_pop_scope(pTHX)
79072805 101{
97aff369 102 dVAR;
35a4481c 103 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 104 LEAVE_SCOPE(oldsave);
79072805
LW
105}
106
107void
864dbfa3 108Perl_markstack_grow(pTHX)
a0d0e21e 109{
97aff369 110 dVAR;
35a4481c
AL
111 const I32 oldmax = PL_markstack_max - PL_markstack;
112 const I32 newmax = GROW(oldmax);
a0d0e21e 113
3280af22
NIS
114 Renew(PL_markstack, newmax, I32);
115 PL_markstack_ptr = PL_markstack + oldmax;
116 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
117}
118
119void
864dbfa3 120Perl_savestack_grow(pTHX)
79072805 121{
97aff369 122 dVAR;
8aacddc1 123 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 124 Renew(PL_savestack, PL_savestack_max, ANY);
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LW
125}
126
4b3c1a47
AE
127void
128Perl_savestack_grow_cnt(pTHX_ I32 need)
129{
97aff369 130 dVAR;
4b3c1a47
AE
131 PL_savestack_max = PL_savestack_ix + need;
132 Renew(PL_savestack, PL_savestack_max, ANY);
133}
134
2ce36478
SM
135#undef GROW
136
79072805 137void
864dbfa3 138Perl_tmps_grow(pTHX_ I32 n)
677b06e3 139{
97aff369 140 dVAR;
677b06e3
GS
141#ifndef STRESS_REALLOC
142 if (n < 128)
143 n = (PL_tmps_max < 512) ? 128 : 512;
144#endif
145 PL_tmps_max = PL_tmps_ix + n + 1;
146 Renew(PL_tmps_stack, PL_tmps_max, SV*);
147}
148
149
150void
864dbfa3 151Perl_free_tmps(pTHX)
79072805 152{
97aff369 153 dVAR;
79072805 154 /* XXX should tmps_floor live in cxstack? */
35a4481c 155 const I32 myfloor = PL_tmps_floor;
3280af22 156 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
901017d6 157 SV* const sv = PL_tmps_stack[PL_tmps_ix];
a0714e2c 158 PL_tmps_stack[PL_tmps_ix--] = NULL;
8aacddc1 159 if (sv && sv != &PL_sv_undef) {
463ee0b2 160 SvTEMP_off(sv);
8990e307 161 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 162 }
79072805
LW
163 }
164}
165
76e3520e 166STATIC SV *
af7df257 167S_save_scalar_at(pTHX_ SV **sptr, const U32 flags)
79072805 168{
97aff369 169 dVAR;
901017d6 170 SV * const osv = *sptr;
561b68a9 171 register SV * const sv = *sptr = newSV(0);
79072805 172
7918f24d
NC
173 PERL_ARGS_ASSERT_SAVE_SCALAR_AT;
174
a0d0e21e 175 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
a0d0e21e 176 if (SvGMAGICAL(osv)) {
35a4481c 177 const bool oldtainted = PL_tainted;
a0d0e21e 178 SvFLAGS(osv) |= (SvFLAGS(osv) &
c268c2a6 179 (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 180 PL_tainted = oldtainted;
a0d0e21e 181 }
af7df257 182 mg_localize(osv, sv, (flags & SAVEf_SETMAGIC) != 0);
79072805
LW
183 }
184 return sv;
185}
186
dfcd3de5
NC
187void
188Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type)
e22024d3
NC
189{
190 dVAR;
191 SSCHECK(3);
192 SSPUSHPTR(ptr1);
193 SSPUSHPTR(ptr2);
194 SSPUSHINT(type);
195}
196
7a4c00b4 197SV *
864dbfa3 198Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 199{
97aff369 200 dVAR;
fb4fc1fa 201 SV ** const sptr = &GvSVn(gv);
7918f24d
NC
202
203 PERL_ARGS_ASSERT_SAVE_SCALAR;
204
27cc343c 205 PL_localizing = 1;
0cbee0a4 206 SvGETMAGIC(*sptr);
27cc343c 207 PL_localizing = 0;
e22024d3 208 save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV);
af7df257 209 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
7a4c00b4
PP
210}
211
f4dd75d9 212/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
213 * restore a global SV to its prior contents, freeing new value. */
214void
864dbfa3 215Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 216{
97aff369 217 dVAR;
7918f24d
NC
218
219 PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF;
220
e22024d3 221 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF);
b9d12d37
GS
222}
223
f4dd75d9
GS
224/* Like save_pptr(), but also Safefree()s the new value if it is different
225 * from the old one. Can be used to restore a global char* to its prior
226 * contents, freeing new value. */
227void
228Perl_save_generic_pvref(pTHX_ char **str)
229{
97aff369 230 dVAR;
7918f24d
NC
231
232 PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF;
233
e22024d3 234 save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF);
f4dd75d9
GS
235}
236
05ec9bb3
NIS
237/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
238 * Can be used to restore a shared global char* to its prior
239 * contents, freeing new value. */
240void
241Perl_save_shared_pvref(pTHX_ char **str)
242{
97aff369 243 dVAR;
7918f24d
NC
244
245 PERL_ARGS_ASSERT_SAVE_SHARED_PVREF;
246
e22024d3 247 save_pushptrptr(str, *str, SAVEt_SHARED_PVREF);
05ec9bb3
NIS
248}
249
14f338dc
DM
250/* set the SvFLAGS specified by mask to the values in val */
251
252void
253Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
254{
97aff369 255 dVAR;
7918f24d
NC
256
257 PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS;
258
14f338dc
DM
259 SSCHECK(4);
260 SSPUSHPTR(sv);
261 SSPUSHINT(mask);
262 SSPUSHINT(val);
263 SSPUSHINT(SAVEt_SET_SVFLAGS);
264}
265
79072805 266void
864dbfa3 267Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 268{
97aff369 269 dVAR;
7918f24d
NC
270
271 PERL_ARGS_ASSERT_SAVE_GP;
272
e22024d3 273 save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP);
79072805 274
5f05dabc 275 if (empty) {
12816592 276 GP *gp = Perl_newGP(aTHX_ gv);
146174a9 277
fae75791 278 if (GvCVu(gv))
e1a479c5 279 mro_method_changed_in(GvSTASH(gv)); /* taking a method out of circulation ("local")*/
146174a9
CB
280 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
281 gp->gp_io = newIO();
282 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
283 }
72651472
NC
284#ifdef PERL_DONT_CREATE_GVSV
285 if (gv == PL_errgv) {
286 /* We could scatter this logic everywhere by changing the
287 definition of ERRSV from GvSV() to GvSVn(), but it seems more
288 efficient to do this check once here. */
289 gp->gp_sv = newSV(0);
290 }
291#endif
12816592 292 GvGP(gv) = gp;
5f05dabc
PP
293 }
294 else {
44a8e56a 295 gp_ref(GvGP(gv));
5f05dabc
PP
296 GvINTRO_on(gv);
297 }
79072805 298}
79072805 299
79072805 300AV *
864dbfa3 301Perl_save_ary(pTHX_ GV *gv)
79072805 302{
97aff369 303 dVAR;
901017d6 304 AV * const oav = GvAVn(gv);
67a38de0 305 AV *av;
fb73857a 306
7918f24d
NC
307 PERL_ARGS_ASSERT_SAVE_ARY;
308
67a38de0
NIS
309 if (!AvREAL(oav) && AvREIFY(oav))
310 av_reify(oav);
e22024d3 311 save_pushptrptr(gv, oav, SAVEt_AV);
79072805 312
4608196e 313 GvAV(gv) = NULL;
fb73857a 314 av = GvAVn(gv);
0cbee0a4 315 if (SvMAGIC(oav))
9711599e 316 mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE);
fb73857a 317 return av;
79072805
LW
318}
319
320HV *
864dbfa3 321Perl_save_hash(pTHX_ GV *gv)
79072805 322{
97aff369 323 dVAR;
fb73857a
PP
324 HV *ohv, *hv;
325
7918f24d
NC
326 PERL_ARGS_ASSERT_SAVE_HASH;
327
e22024d3 328 save_pushptrptr(gv, (ohv = GvHVn(gv)), SAVEt_HV);
79072805 329
4608196e 330 GvHV(gv) = NULL;
fb73857a 331 hv = GvHVn(gv);
0cbee0a4 332 if (SvMAGIC(ohv))
9711599e 333 mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE);
fb73857a 334 return hv;
79072805
LW
335}
336
337void
864dbfa3 338Perl_save_item(pTHX_ register SV *item)
79072805 339{
97aff369 340 dVAR;
901017d6 341 register SV * const sv = newSVsv(item);
79072805 342
7918f24d
NC
343 PERL_ARGS_ASSERT_SAVE_ITEM;
344
e22024d3
NC
345 save_pushptrptr(item, /* remember the pointer */
346 sv, /* remember the value */
347 SAVEt_ITEM);
79072805
LW
348}
349
350void
1409bc06 351Perl_save_bool(pTHX_ bool *boolp)
79072805 352{
97aff369 353 dVAR;
7918f24d 354
1409bc06 355 PERL_ARGS_ASSERT_SAVE_BOOL;
7918f24d 356
79072805 357 SSCHECK(3);
1409bc06
NC
358 SSPUSHBOOL(*boolp);
359 SSPUSHPTR(boolp);
360 SSPUSHINT(SAVEt_BOOL);
361}
362
7623d426
NC
363void
364Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
1409bc06
NC
365{
366 dVAR;
367 SSCHECK(3);
368 SSPUSHINT(i);
369 SSPUSHPTR(ptr);
370 SSPUSHINT(type);
79072805
LW
371}
372
373void
1409bc06 374Perl_save_int(pTHX_ int *intp)
9febdf04 375{
97aff369 376 dVAR;
7918f24d 377
1409bc06 378 PERL_ARGS_ASSERT_SAVE_INT;
7918f24d 379
1409bc06 380 save_pushi32ptr(*intp, intp, SAVEt_INT);
9febdf04
RH
381}
382
383void
58188858
RGS
384Perl_save_I8(pTHX_ I8 *bytep)
385{
386 dVAR;
7918f24d
NC
387
388 PERL_ARGS_ASSERT_SAVE_I8;
389
1409bc06 390 save_pushi32ptr(*bytep, bytep, SAVEt_I8);
58188858
RGS
391}
392
393void
87a84751
JH
394Perl_save_I16(pTHX_ I16 *intp)
395{
396 dVAR;
7918f24d
NC
397
398 PERL_ARGS_ASSERT_SAVE_I16;
399
1409bc06 400 save_pushi32ptr(*intp, intp, SAVEt_I16);
87a84751
JH
401}
402
403void
864dbfa3 404Perl_save_I32(pTHX_ I32 *intp)
79072805 405{
97aff369 406 dVAR;
7918f24d
NC
407
408 PERL_ARGS_ASSERT_SAVE_I32;
409
1409bc06 410 save_pushi32ptr(*intp, intp, SAVEt_I32);
79072805
LW
411}
412
85e6fe83
LW
413/* Cannot use save_sptr() to store a char* since the SV** cast will
414 * force word-alignment and we'll miss the pointer.
415 */
416void
864dbfa3 417Perl_save_pptr(pTHX_ char **pptr)
85e6fe83 418{
97aff369 419 dVAR;
7918f24d
NC
420
421 PERL_ARGS_ASSERT_SAVE_PPTR;
422
e22024d3 423 save_pushptrptr(*pptr, pptr, SAVEt_PPTR);
85e6fe83
LW
424}
425
79072805 426void
146174a9
CB
427Perl_save_vptr(pTHX_ void *ptr)
428{
97aff369 429 dVAR;
7918f24d
NC
430
431 PERL_ARGS_ASSERT_SAVE_VPTR;
432
e22024d3 433 save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR);
146174a9
CB
434}
435
436void
864dbfa3 437Perl_save_sptr(pTHX_ SV **sptr)
79072805 438{
97aff369 439 dVAR;
7918f24d
NC
440
441 PERL_ARGS_ASSERT_SAVE_SPTR;
442
e22024d3 443 save_pushptrptr(*sptr, sptr, SAVEt_SPTR);
79072805
LW
444}
445
c3564e5c 446void
09edbca0 447Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off)
c3564e5c 448{
97aff369 449 dVAR;
c3564e5c 450 SSCHECK(4);
f3548bdc 451 ASSERT_CURPAD_ACTIVE("save_padsv");
09edbca0 452 SSPUSHPTR(SvREFCNT_inc_simple_NN(PL_curpad[off]));
f3548bdc 453 SSPUSHPTR(PL_comppad);
c3564e5c 454 SSPUSHLONG((long)off);
09edbca0 455 SSPUSHINT(SAVEt_PADSV_AND_MORTALIZE);
c3564e5c
GS
456}
457
79072805 458void
864dbfa3 459Perl_save_hptr(pTHX_ HV **hptr)
79072805 460{
97aff369 461 dVAR;
7918f24d
NC
462
463 PERL_ARGS_ASSERT_SAVE_HPTR;
464
e22024d3 465 save_pushptrptr(*hptr, hptr, SAVEt_HPTR);
79072805
LW
466}
467
468void
864dbfa3 469Perl_save_aptr(pTHX_ AV **aptr)
79072805 470{
97aff369 471 dVAR;
7918f24d
NC
472
473 PERL_ARGS_ASSERT_SAVE_APTR;
474
e22024d3 475 save_pushptrptr(*aptr, aptr, SAVEt_APTR);
79072805
LW
476}
477
478void
2fd8beea 479Perl_save_pushptr(pTHX_ void *const ptr, const int type)
8990e307 480{
97aff369 481 dVAR;
8990e307 482 SSCHECK(2);
2fd8beea
NC
483 SSPUSHPTR(ptr);
484 SSPUSHINT(type);
8990e307
LW
485}
486
487void
864dbfa3 488Perl_save_clearsv(pTHX_ SV **svp)
8990e307 489{
97aff369 490 dVAR;
7918f24d
NC
491
492 PERL_ARGS_ASSERT_SAVE_CLEARSV;
493
f3548bdc 494 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 495 SSCHECK(2);
3280af22 496 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 497 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 498 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
499}
500
501void
864dbfa3 502Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307 503{
97aff369 504 dVAR;
7918f24d
NC
505
506 PERL_ARGS_ASSERT_SAVE_DELETE;
507
8990e307
LW
508 SSCHECK(4);
509 SSPUSHINT(klen);
510 SSPUSHPTR(key);
b37c2d43 511 SSPUSHPTR(SvREFCNT_inc_simple(hv));
8990e307
LW
512 SSPUSHINT(SAVEt_DELETE);
513}
514
515void
12ab1f58
JH
516Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
517{
518 dVAR;
7918f24d
NC
519
520 PERL_ARGS_ASSERT_SAVE_DESTRUCTOR;
521
12ab1f58
JH
522 SSCHECK(3);
523 SSPUSHDPTR(f);
524 SSPUSHPTR(p);
525 SSPUSHINT(SAVEt_DESTRUCTOR);
526}
527
528void
146174a9
CB
529Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
530{
97aff369 531 dVAR;
146174a9
CB
532 SSCHECK(3);
533 SSPUSHDXPTR(f);
534 SSPUSHPTR(p);
535 SSPUSHINT(SAVEt_DESTRUCTOR_X);
536}
537
538void
da8315f8
NC
539Perl_save_hints(pTHX)
540{
541 dVAR;
542 if (PL_compiling.cop_hints_hash) {
543 HINTS_REFCNT_LOCK;
544 PL_compiling.cop_hints_hash->refcounted_he_refcnt++;
545 HINTS_REFCNT_UNLOCK;
546 }
547 SSCHECK(4);
548 if (PL_hints & HINT_LOCALIZE_HH) {
549 SSPUSHPTR(GvHV(PL_hintgv));
550 GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv));
551 }
552 SSPUSHINT(PL_hints);
553 SSPUSHPTR(PL_compiling.cop_hints_hash);
554 SSPUSHINT(SAVEt_HINTS);
555}
556
557void
59413342 558Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
4e4c362e 559{
97aff369 560 dVAR;
bfc4de9f 561 SV *sv;
7918f24d
NC
562
563 PERL_ARGS_ASSERT_SAVE_AELEM;
564
0cbee0a4 565 SvGETMAGIC(*sptr);
4e4c362e 566 SSCHECK(4);
b37c2d43 567 SSPUSHPTR(SvREFCNT_inc_simple(av));
4e4c362e
GS
568 SSPUSHINT(idx);
569 SSPUSHPTR(SvREFCNT_inc(*sptr));
570 SSPUSHINT(SAVEt_AELEM);
5dd42e15
DM
571 /* if it gets reified later, the restore will have the wrong refcnt */
572 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 573 SvREFCNT_inc_void(*sptr);
af7df257 574 save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
bfc4de9f
DM
575 sv = *sptr;
576 /* If we're localizing a tied array element, this new sv
577 * won't actually be stored in the array - so it won't get
578 * reaped when the localize ends. Ensure it gets reaped by
579 * mortifying it instead. DAPM */
580 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
581 sv_2mortal(sv);
4e4c362e
GS
582}
583
584void
af7df257 585Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 586{
97aff369 587 dVAR;
bfc4de9f 588 SV *sv;
7918f24d 589
af7df257 590 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 591
0cbee0a4 592 SvGETMAGIC(*sptr);
4e4c362e 593 SSCHECK(4);
b37c2d43 594 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 595 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
596 SSPUSHPTR(SvREFCNT_inc(*sptr));
597 SSPUSHINT(SAVEt_HELEM);
af7df257 598 save_scalar_at(sptr, flags);
bfc4de9f
DM
599 sv = *sptr;
600 /* If we're localizing a tied hash element, this new sv
601 * won't actually be stored in the hash - so it won't get
602 * reaped when the localize ends. Ensure it gets reaped by
603 * mortifying it instead. DAPM */
604 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
605 sv_2mortal(sv);
4e4c362e
GS
606}
607
2053acbf
NC
608SV*
609Perl_save_svref(pTHX_ SV **sptr)
610{
611 dVAR;
7918f24d
NC
612
613 PERL_ARGS_ASSERT_SAVE_SVREF;
614
2053acbf 615 SvGETMAGIC(*sptr);
e22024d3 616 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 617 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
618}
619
455ece5e 620I32
864dbfa3 621Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 622{
97aff369 623 dVAR;
35a4481c 624 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 625 - (char*)PL_savestack);
35a4481c 626 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 627
1bb4c835 628 SSGROW(elems + 2);
455ece5e
AD
629
630 PL_savestack_ix += elems;
631 SSPUSHINT(elems);
632 SSPUSHINT(SAVEt_ALLOC);
633 return start;
634}
635
462e5cf6 636void
864dbfa3 637Perl_leave_scope(pTHX_ I32 base)
79072805 638{
97aff369 639 dVAR;
79072805
LW
640 register SV *sv;
641 register SV *value;
642 register GV *gv;
643 register AV *av;
644 register HV *hv;
20454177 645 void* ptr;
f4dd75d9 646 register char* str;
161b7d16 647 I32 i;
79072805
LW
648
649 if (base < -1)
cea2e8a9 650 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 651 while (PL_savestack_ix > base) {
c6ae7647
NC
652 TAINT_NOT;
653
79072805
LW
654 switch (SSPOPINT) {
655 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
656 value = MUTABLE_SV(SSPOPPTR);
657 sv = MUTABLE_SV(SSPOPPTR);
79072805 658 sv_replace(sv,value);
3280af22 659 PL_localizing = 2;
79072805 660 SvSETMAGIC(sv);
3280af22 661 PL_localizing = 0;
79072805 662 break;
8aacddc1 663 case SAVEt_SV: /* scalar reference */
ad64d0ec 664 value = MUTABLE_SV(SSPOPPTR);
159b6efe 665 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 666 ptr = &GvSV(gv);
502c6561 667 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
668 restore_sv:
669 sv = *(SV**)ptr;
2053acbf
NC
670 *(SV**)ptr = value;
671 SvREFCNT_dec(sv);
672 PL_localizing = 2;
673 SvSETMAGIC(value);
674 PL_localizing = 0;
675 SvREFCNT_dec(value);
676 if (av) /* actually an av, hv or gv */
677 SvREFCNT_dec(av);
678 break;
8aacddc1 679 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 680 ptr = SSPOPPTR;
b03d03b0 681 str = (char*)SSPOPPTR;
f4dd75d9
GS
682 if (*(char**)ptr != str) {
683 Safefree(*(char**)ptr);
684 *(char**)ptr = str;
685 }
686 break;
05ec9bb3
NIS
687 case SAVEt_SHARED_PVREF: /* shared pv */
688 str = (char*)SSPOPPTR;
689 ptr = SSPOPPTR;
690 if (*(char**)ptr != str) {
5e54c26f 691#ifdef NETWARE
9ecbcc42 692 PerlMem_free(*(char**)ptr);
5e54c26f 693#else
05ec9bb3 694 PerlMemShared_free(*(char**)ptr);
5e54c26f 695#endif
05ec9bb3
NIS
696 *(char**)ptr = str;
697 }
698 break;
8aacddc1 699 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 700 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 701 ptr = SSPOPPTR;
f4dd75d9
GS
702 sv = *(SV**)ptr;
703 *(SV**)ptr = value;
704 SvREFCNT_dec(sv);
b9d12d37
GS
705 SvREFCNT_dec(value);
706 break;
8aacddc1 707 case SAVEt_AV: /* array reference */
502c6561 708 av = MUTABLE_AV(SSPOPPTR);
159b6efe 709 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 710 if (GvAV(gv)) {
c4a7531d 711 SvREFCNT_dec(GvAV(gv));
fb73857a 712 }
8aacddc1 713 GvAV(gv) = av;
fb73857a 714 if (SvMAGICAL(av)) {
3280af22 715 PL_localizing = 2;
ad64d0ec 716 SvSETMAGIC(MUTABLE_SV(av));
3280af22 717 PL_localizing = 0;
fb73857a 718 }
8aacddc1
NIS
719 break;
720 case SAVEt_HV: /* hash reference */
85fbaab2 721 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 722 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 723 if (GvHV(gv)) {
c4a7531d 724 SvREFCNT_dec(GvHV(gv));
fb73857a 725 }
8aacddc1 726 GvHV(gv) = hv;
fb73857a 727 if (SvMAGICAL(hv)) {
3280af22 728 PL_localizing = 2;
ad64d0ec 729 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 730 PL_localizing = 0;
fb73857a 731 }
8aacddc1 732 break;
79072805
LW
733 case SAVEt_INT: /* int reference */
734 ptr = SSPOPPTR;
735 *(int*)ptr = (int)SSPOPINT;
736 break;
9febdf04
RH
737 case SAVEt_BOOL: /* bool reference */
738 ptr = SSPOPPTR;
739 *(bool*)ptr = (bool)SSPOPBOOL;
740 break;
79072805
LW
741 case SAVEt_I32: /* I32 reference */
742 ptr = SSPOPPTR;
3235b7a3
NC
743#ifdef PERL_DEBUG_READONLY_OPS
744 {
745 const I32 val = SSPOPINT;
746 if (*(I32*)ptr != val)
747 *(I32*)ptr = val;
748 }
749#else
79072805 750 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 751#endif
79072805
LW
752 break;
753 case SAVEt_SPTR: /* SV* reference */
754 ptr = SSPOPPTR;
ad64d0ec 755 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 756 break;
146174a9 757 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
758 case SAVEt_PPTR: /* char* reference */
759 ptr = SSPOPPTR;
760 *(char**)ptr = (char*)SSPOPPTR;
761 break;
79072805
LW
762 case SAVEt_HPTR: /* HV* reference */
763 ptr = SSPOPPTR;
85fbaab2 764 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
765 break;
766 case SAVEt_APTR: /* AV* reference */
767 ptr = SSPOPPTR;
502c6561 768 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 769 break;
fb73857a 770 case SAVEt_GP: /* scalar reference */
79072805 771 ptr = SSPOPPTR;
159b6efe 772 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
773 gp_free(gv);
774 GvGP(gv) = (GP*)ptr;
dd69841b
BB
775 /* putting a method back into circulation ("local")*/
776 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
777 mro_method_changed_in(hv);
4633a7c4 778 SvREFCNT_dec(gv);
8aacddc1 779 break;
8990e307
LW
780 case SAVEt_FREESV:
781 ptr = SSPOPPTR;
ad64d0ec 782 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 783 break;
26d9b02f
JH
784 case SAVEt_MORTALIZESV:
785 ptr = SSPOPPTR;
ad64d0ec 786 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 787 break;
8990e307
LW
788 case SAVEt_FREEOP:
789 ptr = SSPOPPTR;
f3548bdc 790 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
791 op_free((OP*)ptr);
792 break;
793 case SAVEt_FREEPV:
794 ptr = SSPOPPTR;
1df70142 795 Safefree(ptr);
8990e307
LW
796 break;
797 case SAVEt_CLEARSV:
3280af22 798 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 799 sv = *(SV**)ptr;
dd2155a4
DM
800
801 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
802 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
803 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
804 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
805 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
806 ));
807
bc44cdaf
GS
808 /* Can clear pad variable in place? */
809 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
810 /*
811 * if a my variable that was made readonly is going out of
812 * scope, we want to remove the readonlyness so that it can
813 * go out of scope quietly
8aacddc1 814 */
a26e96df 815 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
816 SvREADONLY_off(sv);
817
6fc92669 818 if (SvTHINKFIRST(sv))
840a7b70 819 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
820 if (SvMAGICAL(sv))
821 mg_free(sv);
8990e307
LW
822
823 switch (SvTYPE(sv)) {
824 case SVt_NULL:
825 break;
826 case SVt_PVAV:
502c6561 827 av_clear(MUTABLE_AV(sv));
8990e307
LW
828 break;
829 case SVt_PVHV:
85fbaab2 830 hv_clear(MUTABLE_HV(sv));
8990e307
LW
831 break;
832 case SVt_PVCV:
cea2e8a9 833 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 834 default:
0c34ef67 835 SvOK_off(sv);
8990e307
LW
836 break;
837 }
d9d18af6 838 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
839 }
840 else { /* Someone has a claim on this, so abandon it. */
35a4481c 841 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 842 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
843 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
844 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 845 default: *(SV**)ptr = newSV(0); break;
8990e307 846 }
53868620 847 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
848 /* preserve pad nature, but also mark as not live
849 * for any closure capturing */
2740392c 850 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
851 }
852 break;
853 case SAVEt_DELETE:
854 ptr = SSPOPPTR;
85fbaab2 855 hv = MUTABLE_HV(ptr);
8990e307 856 ptr = SSPOPPTR;
7d654f43 857 (void)hv_delete(hv, (char*)ptr, (I32)SSPOPINT, G_DISCARD);
4e4c362e 858 SvREFCNT_dec(hv);
8aacddc1 859 Safefree(ptr);
8990e307 860 break;
146174a9
CB
861 case SAVEt_DESTRUCTOR_X:
862 ptr = SSPOPPTR;
acfe0abc 863 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
864 break;
865 case SAVEt_REGCONTEXT:
455ece5e 866 case SAVEt_ALLOC:
161b7d16 867 i = SSPOPINT;
3280af22 868 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 869 break;
55497cff 870 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 871 i = SSPOPINT;
3280af22 872 PL_stack_sp = PL_stack_base + i;
55497cff 873 break;
ea8d6ae1
DB
874 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
875 i = SSPOPINT;
876 cxstack[i].blk_oldsp = SSPOPINT;
877 break;
161b7d16 878 case SAVEt_AELEM: /* array element */
ad64d0ec 879 value = MUTABLE_SV(SSPOPPTR);
161b7d16 880 i = SSPOPINT;
502c6561 881 av = MUTABLE_AV(SSPOPPTR);
658aef79 882 ptr = av_fetch(av,i,1);
5dd42e15
DM
883 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
884 SvREFCNT_dec(value);
4e4c362e
GS
885 if (ptr) {
886 sv = *(SV**)ptr;
3280af22 887 if (sv && sv != &PL_sv_undef) {
ad64d0ec 888 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 889 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
890 goto restore_sv;
891 }
892 }
893 SvREFCNT_dec(av);
894 SvREFCNT_dec(value);
895 break;
161b7d16 896 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
897 value = MUTABLE_SV(SSPOPPTR);
898 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 899 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 900 ptr = hv_fetch_ent(hv, sv, 1, 0);
4e4c362e 901 if (ptr) {
35a4481c 902 const SV * const oval = HeVAL((HE*)ptr);
3280af22 903 if (oval && oval != &PL_sv_undef) {
4e4c362e 904 ptr = &HeVAL((HE*)ptr);
ad64d0ec 905 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 906 SvREFCNT_inc_void(*(SV**)ptr);
4e4c362e 907 SvREFCNT_dec(sv);
502c6561 908 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
909 goto restore_sv;
910 }
911 }
912 SvREFCNT_dec(hv);
913 SvREFCNT_dec(sv);
914 SvREFCNT_dec(value);
915 break;
462e5cf6 916 case SAVEt_OP:
533c011a 917 PL_op = (OP*)SSPOPPTR;
462e5cf6 918 break;
25eaa213 919 case SAVEt_HINTS:
045ac317 920 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 921 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
922 GvHV(PL_hintgv) = NULL;
923 }
c28fe1ec
NC
924 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
925 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
601cee3b 926 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748 927 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 928 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 929 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
930 assert(GvHV(PL_hintgv));
931 } else if (!GvHV(PL_hintgv)) {
932 /* Need to add a new one manually, else gv_fetchpv() can
933 add one in this code:
934
935 if (SvTYPE(gv) == SVt_PVGV) {
936 if (add) {
937 GvMULTI_on(gv);
938 gv_init_sv(gv, sv_type);
939 if (*name=='!' && sv_type == SVt_PVHV && len==1)
940 require_errno(gv);
941 }
942 return gv;
943 }
944
945 and it won't have the magic set. */
946
947 HV *const hv = newHV();
948 hv_magic(hv, NULL, PERL_MAGIC_hints);
949 GvHV(PL_hintgv) = hv;
dfa41748 950 }
5b9c0671 951 assert(GvHV(PL_hintgv));
b3ac6de7 952 break;
cb50131a 953 case SAVEt_COMPPAD:
f3548bdc 954 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 955 if (PL_comppad)
cb50131a
CB
956 PL_curpad = AvARRAY(PL_comppad);
957 else
4608196e 958 PL_curpad = NULL;
cb50131a 959 break;
09edbca0 960 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 961 {
35a4481c 962 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 963 SV **svp;
c3564e5c 964 ptr = SSPOPPTR;
09edbca0
NC
965 assert (ptr);
966 svp = AvARRAY((PAD*)ptr) + off;
967 /* This mortalizing used to be done by POPLOOP() via itersave.
968 But as we have all the information here, we can do it here,
969 save even having to have itersave in the struct. */
970 sv_2mortal(*svp);
ad64d0ec 971 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
972 }
973 break;
8b7059b1
DM
974 case SAVEt_SAVESWITCHSTACK:
975 {
976 dSP;
502c6561
NC
977 AV *const t = MUTABLE_AV(SSPOPPTR);
978 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
979 SWITCHSTACK(t,f);
980 PL_curstackinfo->si_stack = f;
981 }
982 break;
14f338dc
DM
983 case SAVEt_SET_SVFLAGS:
984 {
35a4481c
AL
985 const U32 val = (U32)SSPOPINT;
986 const U32 mask = (U32)SSPOPINT;
ad64d0ec 987 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
988 SvFLAGS(sv) &= ~mask;
989 SvFLAGS(sv) |= val;
990 }
991 break;
95e06916
NC
992
993 /* This would be a mathom, but Perl_save_svref() calls a static
994 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 995 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 996 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
997 ptr = SSPOPPTR;
998 av = NULL; /* what to refcnt_dec */
999 goto restore_sv;
95e06916
NC
1000
1001 /* These are only saved in mathoms.c */
1002 case SAVEt_NSTAB:
159b6efe 1003 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 1004 (void)sv_clear(MUTABLE_SV(gv));
95e06916 1005 break;
2053acbf
NC
1006 case SAVEt_LONG: /* long reference */
1007 ptr = SSPOPPTR;
1008 *(long*)ptr = (long)SSPOPLONG;
1009 break;
95e06916
NC
1010 case SAVEt_IV: /* IV reference */
1011 ptr = SSPOPPTR;
1012 *(IV*)ptr = (IV)SSPOPIV;
1013 break;
1014
2053acbf
NC
1015 case SAVEt_I16: /* I16 reference */
1016 ptr = SSPOPPTR;
1017 *(I16*)ptr = (I16)SSPOPINT;
1018 break;
1019 case SAVEt_I8: /* I8 reference */
1020 ptr = SSPOPPTR;
1021 *(I8*)ptr = (I8)SSPOPINT;
1022 break;
2053acbf
NC
1023 case SAVEt_DESTRUCTOR:
1024 ptr = SSPOPPTR;
1025 (*SSPOPDPTR)(ptr);
1026 break;
fc15ae8f
NC
1027 case SAVEt_COP_ARYBASE:
1028 ptr = SSPOPPTR;
1029 i = SSPOPINT;
1030 CopARYBASE_set((COP *)ptr, i);
1031 break;
68da3b2f
NC
1032 case SAVEt_COMPILE_WARNINGS:
1033 ptr = SSPOPPTR;
72dc9ed5 1034
68da3b2f
NC
1035 if (!specialWARN(PL_compiling.cop_warnings))
1036 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1037
10edeb5d 1038 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1039 break;
1ade1aa1
NC
1040 case SAVEt_RE_STATE:
1041 {
1042 const struct re_save_state *const state
1043 = (struct re_save_state *)
1044 (PL_savestack + PL_savestack_ix
1045 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1046 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1047
1ade1aa1
NC
1048 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1049 Safefree(PL_reg_start_tmp);
1ade1aa1 1050 }
1ade1aa1
NC
1051 if (PL_reg_poscache != state->re_state_reg_poscache) {
1052 Safefree(PL_reg_poscache);
1ade1aa1 1053 }
46ab3289 1054 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1055 }
1056 break;
7c197c94
DM
1057 case SAVEt_PARSER:
1058 ptr = SSPOPPTR;
1059 parser_free((yy_parser *) ptr);
1060 break;
79072805 1061 default:
cea2e8a9 1062 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1063 }
1064 }
1065}
8990e307 1066
8990e307 1067void
864dbfa3 1068Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1069{
97aff369 1070 dVAR;
7918f24d
NC
1071
1072 PERL_ARGS_ASSERT_CX_DUMP;
1073
35ff7856 1074#ifdef DEBUGGING
22c35a8c 1075 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1076 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1077 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1078 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1079 PTR2UV(cx->blk_oldcop));
760ac839
LW
1080 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1081 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1082 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1083 PTR2UV(cx->blk_oldpm));
760ac839 1084 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1085 }
6b35e009 1086 switch (CxTYPE(cx)) {
8990e307
LW
1087 case CXt_NULL:
1088 case CXt_BLOCK:
1089 break;
146174a9 1090 case CXt_FORMAT:
f9c764c5
NC
1091 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1092 PTR2UV(cx->blk_format.cv));
1093 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1094 PTR2UV(cx->blk_format.gv));
1095 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1096 PTR2UV(cx->blk_format.dfoutgv));
1097 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1098 (int)CxHASARGS(cx));
f9c764c5
NC
1099 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1100 PTR2UV(cx->blk_format.retop));
146174a9 1101 break;
8990e307 1102 case CXt_SUB:
146174a9
CB
1103 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_sub.cv));
760ac839 1105 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1106 (long)cx->blk_sub.olddepth);
760ac839 1107 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1108 (int)CxHASARGS(cx));
1109 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1110 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1111 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1112 break;
1113 case CXt_EVAL:
760ac839 1114 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1115 (long)CxOLD_IN_EVAL(cx));
760ac839 1116 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1117 PL_op_name[CxOLD_OP_TYPE(cx)],
1118 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1119 if (cx->blk_eval.old_namesv)
1120 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1121 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1122 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1123 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1124 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1125 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1126 break;
1127
c6fdafd0 1128 case CXt_LOOP_LAZYIV:
d01136d6 1129 case CXt_LOOP_LAZYSV:
3b719c58
NC
1130 case CXt_LOOP_FOR:
1131 case CXt_LOOP_PLAIN:
0cbdab38 1132 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1133 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1134 (long)cx->blk_loop.resetsp);
022eaa24
NC
1135 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1136 PTR2UV(cx->blk_loop.my_op));
146174a9 1137 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1138 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1139 /* XXX: not accurate for LAZYSV/IV */
146174a9 1140 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1141 PTR2UV(cx->blk_loop.state_u.ary.ary));
1142 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1143 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1144 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1145 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1146 break;
1147
1148 case CXt_SUBST:
760ac839 1149 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1150 (long)cx->sb_iters);
760ac839 1151 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1152 (long)cx->sb_maxiters);
35ef4773
GS
1153 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1154 (long)cx->sb_rflags);
760ac839 1155 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1156 (long)CxONCE(cx));
760ac839 1157 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1158 cx->sb_orig);
146174a9
CB
1159 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1160 PTR2UV(cx->sb_dstr));
1161 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1162 PTR2UV(cx->sb_targ));
1163 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1164 PTR2UV(cx->sb_s));
1165 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1166 PTR2UV(cx->sb_m));
1167 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1168 PTR2UV(cx->sb_strend));
1169 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1170 PTR2UV(cx->sb_rxres));
8990e307
LW
1171 break;
1172 }
65e66c80 1173#else
96a5add6 1174 PERL_UNUSED_CONTEXT;
65e66c80 1175 PERL_UNUSED_ARG(cx);
17c3b450 1176#endif /* DEBUGGING */
35ff7856 1177}
241d1a3b
NC
1178
1179/*
1180 * Local variables:
1181 * c-indentation-style: bsd
1182 * c-basic-offset: 4
1183 * indent-tabs-mode: t
1184 * End:
1185 *
37442d52
RGS
1186 * ex: set ts=8 sts=4 sw=4 noet:
1187 */