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Re: 5.8.9 RC1 / 5.10.x / bleed patches for README.aix
[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);
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LW
84 return cxstack_ix + 1;
85}
86
79072805 87void
864dbfa3 88Perl_push_scope(pTHX)
79072805 89{
97aff369 90 dVAR;
3280af22
NIS
91 if (PL_scopestack_ix == PL_scopestack_max) {
92 PL_scopestack_max = GROW(PL_scopestack_max);
93 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 94 }
3280af22 95 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
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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);
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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);
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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
363static void
364S_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type)
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
59413342 539Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
4e4c362e 540{
97aff369 541 dVAR;
bfc4de9f 542 SV *sv;
7918f24d
NC
543
544 PERL_ARGS_ASSERT_SAVE_AELEM;
545
0cbee0a4 546 SvGETMAGIC(*sptr);
4e4c362e 547 SSCHECK(4);
b37c2d43 548 SSPUSHPTR(SvREFCNT_inc_simple(av));
4e4c362e
GS
549 SSPUSHINT(idx);
550 SSPUSHPTR(SvREFCNT_inc(*sptr));
551 SSPUSHINT(SAVEt_AELEM);
5dd42e15
DM
552 /* if it gets reified later, the restore will have the wrong refcnt */
553 if (!AvREAL(av) && AvREIFY(av))
b37c2d43 554 SvREFCNT_inc_void(*sptr);
af7df257 555 save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
bfc4de9f
DM
556 sv = *sptr;
557 /* If we're localizing a tied array element, this new sv
558 * won't actually be stored in the array - so it won't get
559 * reaped when the localize ends. Ensure it gets reaped by
560 * mortifying it instead. DAPM */
561 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
562 sv_2mortal(sv);
4e4c362e
GS
563}
564
565void
af7df257 566Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags)
4e4c362e 567{
97aff369 568 dVAR;
bfc4de9f 569 SV *sv;
7918f24d 570
af7df257 571 PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS;
7918f24d 572
0cbee0a4 573 SvGETMAGIC(*sptr);
4e4c362e 574 SSCHECK(4);
b37c2d43 575 SSPUSHPTR(SvREFCNT_inc_simple(hv));
b2096149 576 SSPUSHPTR(newSVsv(key));
4e4c362e
GS
577 SSPUSHPTR(SvREFCNT_inc(*sptr));
578 SSPUSHINT(SAVEt_HELEM);
af7df257 579 save_scalar_at(sptr, flags);
bfc4de9f
DM
580 sv = *sptr;
581 /* If we're localizing a tied hash element, this new sv
582 * won't actually be stored in the hash - so it won't get
583 * reaped when the localize ends. Ensure it gets reaped by
584 * mortifying it instead. DAPM */
585 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
586 sv_2mortal(sv);
4e4c362e
GS
587}
588
2053acbf
NC
589SV*
590Perl_save_svref(pTHX_ SV **sptr)
591{
592 dVAR;
7918f24d
NC
593
594 PERL_ARGS_ASSERT_SAVE_SVREF;
595
2053acbf 596 SvGETMAGIC(*sptr);
e22024d3 597 save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF);
af7df257 598 return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */
2053acbf
NC
599}
600
455ece5e 601I32
864dbfa3 602Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 603{
97aff369 604 dVAR;
35a4481c 605 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 606 - (char*)PL_savestack);
35a4481c 607 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e 608
1bb4c835 609 SSGROW(elems + 2);
455ece5e
AD
610
611 PL_savestack_ix += elems;
612 SSPUSHINT(elems);
613 SSPUSHINT(SAVEt_ALLOC);
614 return start;
615}
616
462e5cf6 617void
864dbfa3 618Perl_leave_scope(pTHX_ I32 base)
79072805 619{
97aff369 620 dVAR;
79072805
LW
621 register SV *sv;
622 register SV *value;
623 register GV *gv;
624 register AV *av;
625 register HV *hv;
20454177 626 void* ptr;
f4dd75d9 627 register char* str;
161b7d16 628 I32 i;
79072805
LW
629
630 if (base < -1)
cea2e8a9 631 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 632 while (PL_savestack_ix > base) {
c6ae7647
NC
633 TAINT_NOT;
634
79072805
LW
635 switch (SSPOPINT) {
636 case SAVEt_ITEM: /* normal string */
ad64d0ec
NC
637 value = MUTABLE_SV(SSPOPPTR);
638 sv = MUTABLE_SV(SSPOPPTR);
79072805 639 sv_replace(sv,value);
3280af22 640 PL_localizing = 2;
79072805 641 SvSETMAGIC(sv);
3280af22 642 PL_localizing = 0;
79072805 643 break;
8aacddc1 644 case SAVEt_SV: /* scalar reference */
ad64d0ec 645 value = MUTABLE_SV(SSPOPPTR);
159b6efe 646 gv = MUTABLE_GV(SSPOPPTR);
7a4c00b4 647 ptr = &GvSV(gv);
502c6561 648 av = MUTABLE_AV(gv); /* what to refcnt_dec */
2053acbf
NC
649 restore_sv:
650 sv = *(SV**)ptr;
2053acbf
NC
651 *(SV**)ptr = value;
652 SvREFCNT_dec(sv);
653 PL_localizing = 2;
654 SvSETMAGIC(value);
655 PL_localizing = 0;
656 SvREFCNT_dec(value);
657 if (av) /* actually an av, hv or gv */
658 SvREFCNT_dec(av);
659 break;
8aacddc1 660 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9 661 ptr = SSPOPPTR;
b03d03b0 662 str = (char*)SSPOPPTR;
f4dd75d9
GS
663 if (*(char**)ptr != str) {
664 Safefree(*(char**)ptr);
665 *(char**)ptr = str;
666 }
667 break;
05ec9bb3
NIS
668 case SAVEt_SHARED_PVREF: /* shared pv */
669 str = (char*)SSPOPPTR;
670 ptr = SSPOPPTR;
671 if (*(char**)ptr != str) {
5e54c26f 672#ifdef NETWARE
9ecbcc42 673 PerlMem_free(*(char**)ptr);
5e54c26f 674#else
05ec9bb3 675 PerlMemShared_free(*(char**)ptr);
5e54c26f 676#endif
05ec9bb3
NIS
677 *(char**)ptr = str;
678 }
679 break;
8aacddc1 680 case SAVEt_GENERIC_SVREF: /* generic sv */
ad64d0ec 681 value = MUTABLE_SV(SSPOPPTR);
b9d12d37 682 ptr = SSPOPPTR;
f4dd75d9
GS
683 sv = *(SV**)ptr;
684 *(SV**)ptr = value;
685 SvREFCNT_dec(sv);
b9d12d37
GS
686 SvREFCNT_dec(value);
687 break;
8aacddc1 688 case SAVEt_AV: /* array reference */
502c6561 689 av = MUTABLE_AV(SSPOPPTR);
159b6efe 690 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 691 if (GvAV(gv)) {
c4a7531d 692 SvREFCNT_dec(GvAV(gv));
fb73857a 693 }
8aacddc1 694 GvAV(gv) = av;
fb73857a 695 if (SvMAGICAL(av)) {
3280af22 696 PL_localizing = 2;
ad64d0ec 697 SvSETMAGIC(MUTABLE_SV(av));
3280af22 698 PL_localizing = 0;
fb73857a 699 }
8aacddc1
NIS
700 break;
701 case SAVEt_HV: /* hash reference */
85fbaab2 702 hv = MUTABLE_HV(SSPOPPTR);
159b6efe 703 gv = MUTABLE_GV(SSPOPPTR);
fb73857a 704 if (GvHV(gv)) {
c4a7531d 705 SvREFCNT_dec(GvHV(gv));
fb73857a 706 }
8aacddc1 707 GvHV(gv) = hv;
fb73857a 708 if (SvMAGICAL(hv)) {
3280af22 709 PL_localizing = 2;
ad64d0ec 710 SvSETMAGIC(MUTABLE_SV(hv));
3280af22 711 PL_localizing = 0;
fb73857a 712 }
8aacddc1 713 break;
79072805
LW
714 case SAVEt_INT: /* int reference */
715 ptr = SSPOPPTR;
716 *(int*)ptr = (int)SSPOPINT;
717 break;
9febdf04
RH
718 case SAVEt_BOOL: /* bool reference */
719 ptr = SSPOPPTR;
720 *(bool*)ptr = (bool)SSPOPBOOL;
721 break;
79072805
LW
722 case SAVEt_I32: /* I32 reference */
723 ptr = SSPOPPTR;
3235b7a3
NC
724#ifdef PERL_DEBUG_READONLY_OPS
725 {
726 const I32 val = SSPOPINT;
727 if (*(I32*)ptr != val)
728 *(I32*)ptr = val;
729 }
730#else
79072805 731 *(I32*)ptr = (I32)SSPOPINT;
3235b7a3 732#endif
79072805
LW
733 break;
734 case SAVEt_SPTR: /* SV* reference */
735 ptr = SSPOPPTR;
ad64d0ec 736 *(SV**)ptr = MUTABLE_SV(SSPOPPTR);
79072805 737 break;
146174a9 738 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
739 case SAVEt_PPTR: /* char* reference */
740 ptr = SSPOPPTR;
741 *(char**)ptr = (char*)SSPOPPTR;
742 break;
79072805
LW
743 case SAVEt_HPTR: /* HV* reference */
744 ptr = SSPOPPTR;
85fbaab2 745 *(HV**)ptr = MUTABLE_HV(SSPOPPTR);
79072805
LW
746 break;
747 case SAVEt_APTR: /* AV* reference */
748 ptr = SSPOPPTR;
502c6561 749 *(AV**)ptr = MUTABLE_AV(SSPOPPTR);
79072805 750 break;
fb73857a 751 case SAVEt_GP: /* scalar reference */
79072805 752 ptr = SSPOPPTR;
159b6efe 753 gv = MUTABLE_GV(SSPOPPTR);
8aacddc1
NIS
754 gp_free(gv);
755 GvGP(gv) = (GP*)ptr;
dd69841b
BB
756 /* putting a method back into circulation ("local")*/
757 if (GvCVu(gv) && (hv=GvSTASH(gv)) && HvNAME_get(hv))
758 mro_method_changed_in(hv);
4633a7c4 759 SvREFCNT_dec(gv);
8aacddc1 760 break;
8990e307
LW
761 case SAVEt_FREESV:
762 ptr = SSPOPPTR;
ad64d0ec 763 SvREFCNT_dec(MUTABLE_SV(ptr));
8990e307 764 break;
26d9b02f
JH
765 case SAVEt_MORTALIZESV:
766 ptr = SSPOPPTR;
ad64d0ec 767 sv_2mortal(MUTABLE_SV(ptr));
26d9b02f 768 break;
8990e307
LW
769 case SAVEt_FREEOP:
770 ptr = SSPOPPTR;
f3548bdc 771 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
772 op_free((OP*)ptr);
773 break;
774 case SAVEt_FREEPV:
775 ptr = SSPOPPTR;
1df70142 776 Safefree(ptr);
8990e307
LW
777 break;
778 case SAVEt_CLEARSV:
3280af22 779 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 780 sv = *(SV**)ptr;
dd2155a4
DM
781
782 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
783 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
784 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
785 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
786 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
787 ));
788
bc44cdaf
GS
789 /* Can clear pad variable in place? */
790 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
791 /*
792 * if a my variable that was made readonly is going out of
793 * scope, we want to remove the readonlyness so that it can
794 * go out of scope quietly
8aacddc1 795 */
a26e96df 796 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
797 SvREADONLY_off(sv);
798
6fc92669 799 if (SvTHINKFIRST(sv))
840a7b70 800 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
801 if (SvMAGICAL(sv))
802 mg_free(sv);
8990e307
LW
803
804 switch (SvTYPE(sv)) {
805 case SVt_NULL:
806 break;
807 case SVt_PVAV:
502c6561 808 av_clear(MUTABLE_AV(sv));
8990e307
LW
809 break;
810 case SVt_PVHV:
85fbaab2 811 hv_clear(MUTABLE_HV(sv));
8990e307
LW
812 break;
813 case SVt_PVCV:
cea2e8a9 814 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 815 default:
0c34ef67 816 SvOK_off(sv);
8990e307
LW
817 break;
818 }
d9d18af6 819 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
820 }
821 else { /* Someone has a claim on this, so abandon it. */
35a4481c 822 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307 823 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
ad64d0ec
NC
824 case SVt_PVAV: *(SV**)ptr = MUTABLE_SV(newAV()); break;
825 case SVt_PVHV: *(SV**)ptr = MUTABLE_SV(newHV()); break;
561b68a9 826 default: *(SV**)ptr = newSV(0); break;
8990e307 827 }
53868620 828 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
829 /* preserve pad nature, but also mark as not live
830 * for any closure capturing */
2740392c 831 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
832 }
833 break;
834 case SAVEt_DELETE:
835 ptr = SSPOPPTR;
85fbaab2 836 hv = MUTABLE_HV(ptr);
8990e307 837 ptr = SSPOPPTR;
7d654f43 838 (void)hv_delete(hv, (char*)ptr, (I32)SSPOPINT, G_DISCARD);
4e4c362e 839 SvREFCNT_dec(hv);
8aacddc1 840 Safefree(ptr);
8990e307 841 break;
146174a9
CB
842 case SAVEt_DESTRUCTOR_X:
843 ptr = SSPOPPTR;
acfe0abc 844 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
845 break;
846 case SAVEt_REGCONTEXT:
455ece5e 847 case SAVEt_ALLOC:
161b7d16 848 i = SSPOPINT;
3280af22 849 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 850 break;
55497cff 851 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 852 i = SSPOPINT;
3280af22 853 PL_stack_sp = PL_stack_base + i;
55497cff 854 break;
ea8d6ae1
DB
855 case SAVEt_STACK_CXPOS: /* blk_oldsp on context stack */
856 i = SSPOPINT;
857 cxstack[i].blk_oldsp = SSPOPINT;
858 break;
161b7d16 859 case SAVEt_AELEM: /* array element */
ad64d0ec 860 value = MUTABLE_SV(SSPOPPTR);
161b7d16 861 i = SSPOPINT;
502c6561 862 av = MUTABLE_AV(SSPOPPTR);
658aef79 863 ptr = av_fetch(av,i,1);
5dd42e15
DM
864 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
865 SvREFCNT_dec(value);
4e4c362e
GS
866 if (ptr) {
867 sv = *(SV**)ptr;
3280af22 868 if (sv && sv != &PL_sv_undef) {
ad64d0ec 869 if (SvTIED_mg((const SV *)av, PERL_MAGIC_tied))
b37c2d43 870 SvREFCNT_inc_void_NN(sv);
4e4c362e
GS
871 goto restore_sv;
872 }
873 }
874 SvREFCNT_dec(av);
875 SvREFCNT_dec(value);
876 break;
161b7d16 877 case SAVEt_HELEM: /* hash element */
ad64d0ec
NC
878 value = MUTABLE_SV(SSPOPPTR);
879 sv = MUTABLE_SV(SSPOPPTR);
85fbaab2 880 hv = MUTABLE_HV(SSPOPPTR);
161b7d16 881 ptr = hv_fetch_ent(hv, sv, 1, 0);
4e4c362e 882 if (ptr) {
35a4481c 883 const SV * const oval = HeVAL((HE*)ptr);
3280af22 884 if (oval && oval != &PL_sv_undef) {
4e4c362e 885 ptr = &HeVAL((HE*)ptr);
ad64d0ec 886 if (SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))
b37c2d43 887 SvREFCNT_inc_void(*(SV**)ptr);
4e4c362e 888 SvREFCNT_dec(sv);
502c6561 889 av = MUTABLE_AV(hv); /* what to refcnt_dec */
4e4c362e
GS
890 goto restore_sv;
891 }
892 }
893 SvREFCNT_dec(hv);
894 SvREFCNT_dec(sv);
895 SvREFCNT_dec(value);
896 break;
462e5cf6 897 case SAVEt_OP:
533c011a 898 PL_op = (OP*)SSPOPPTR;
462e5cf6 899 break;
25eaa213 900 case SAVEt_HINTS:
045ac317 901 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
ad64d0ec 902 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
045ac317
RGS
903 GvHV(PL_hintgv) = NULL;
904 }
3280af22 905 *(I32*)&PL_hints = (I32)SSPOPINT;
c28fe1ec
NC
906 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
907 PL_compiling.cop_hints_hash = (struct refcounted_he *) SSPOPPTR;
dfa41748 908 if (PL_hints & HINT_LOCALIZE_HH) {
ad64d0ec 909 SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv)));
85fbaab2 910 GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR);
5b9c0671
NC
911 assert(GvHV(PL_hintgv));
912 } else if (!GvHV(PL_hintgv)) {
913 /* Need to add a new one manually, else gv_fetchpv() can
914 add one in this code:
915
916 if (SvTYPE(gv) == SVt_PVGV) {
917 if (add) {
918 GvMULTI_on(gv);
919 gv_init_sv(gv, sv_type);
920 if (*name=='!' && sv_type == SVt_PVHV && len==1)
921 require_errno(gv);
922 }
923 return gv;
924 }
925
926 and it won't have the magic set. */
927
928 HV *const hv = newHV();
929 hv_magic(hv, NULL, PERL_MAGIC_hints);
930 GvHV(PL_hintgv) = hv;
dfa41748 931 }
5b9c0671 932 assert(GvHV(PL_hintgv));
b3ac6de7 933 break;
cb50131a 934 case SAVEt_COMPPAD:
f3548bdc 935 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 936 if (PL_comppad)
cb50131a
CB
937 PL_curpad = AvARRAY(PL_comppad);
938 else
4608196e 939 PL_curpad = NULL;
cb50131a 940 break;
09edbca0 941 case SAVEt_PADSV_AND_MORTALIZE:
c3564e5c 942 {
35a4481c 943 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
09edbca0 944 SV **svp;
c3564e5c 945 ptr = SSPOPPTR;
09edbca0
NC
946 assert (ptr);
947 svp = AvARRAY((PAD*)ptr) + off;
948 /* This mortalizing used to be done by POPLOOP() via itersave.
949 But as we have all the information here, we can do it here,
950 save even having to have itersave in the struct. */
951 sv_2mortal(*svp);
ad64d0ec 952 *svp = MUTABLE_SV(SSPOPPTR);
c3564e5c
GS
953 }
954 break;
8b7059b1
DM
955 case SAVEt_SAVESWITCHSTACK:
956 {
957 dSP;
502c6561
NC
958 AV *const t = MUTABLE_AV(SSPOPPTR);
959 AV *const f = MUTABLE_AV(SSPOPPTR);
8b7059b1
DM
960 SWITCHSTACK(t,f);
961 PL_curstackinfo->si_stack = f;
962 }
963 break;
14f338dc
DM
964 case SAVEt_SET_SVFLAGS:
965 {
35a4481c
AL
966 const U32 val = (U32)SSPOPINT;
967 const U32 mask = (U32)SSPOPINT;
ad64d0ec 968 sv = MUTABLE_SV(SSPOPPTR);
14f338dc
DM
969 SvFLAGS(sv) &= ~mask;
970 SvFLAGS(sv) |= val;
971 }
972 break;
95e06916
NC
973
974 /* This would be a mathom, but Perl_save_svref() calls a static
975 function, S_save_scalar_at(), so has to stay in this file. */
2053acbf 976 case SAVEt_SVREF: /* scalar reference */
ad64d0ec 977 value = MUTABLE_SV(SSPOPPTR);
2053acbf
NC
978 ptr = SSPOPPTR;
979 av = NULL; /* what to refcnt_dec */
980 goto restore_sv;
95e06916
NC
981
982 /* These are only saved in mathoms.c */
983 case SAVEt_NSTAB:
159b6efe 984 gv = MUTABLE_GV(SSPOPPTR);
ad64d0ec 985 (void)sv_clear(MUTABLE_SV(gv));
95e06916 986 break;
2053acbf
NC
987 case SAVEt_LONG: /* long reference */
988 ptr = SSPOPPTR;
989 *(long*)ptr = (long)SSPOPLONG;
990 break;
95e06916
NC
991 case SAVEt_IV: /* IV reference */
992 ptr = SSPOPPTR;
993 *(IV*)ptr = (IV)SSPOPIV;
994 break;
995
2053acbf
NC
996 case SAVEt_I16: /* I16 reference */
997 ptr = SSPOPPTR;
998 *(I16*)ptr = (I16)SSPOPINT;
999 break;
1000 case SAVEt_I8: /* I8 reference */
1001 ptr = SSPOPPTR;
1002 *(I8*)ptr = (I8)SSPOPINT;
1003 break;
2053acbf
NC
1004 case SAVEt_DESTRUCTOR:
1005 ptr = SSPOPPTR;
1006 (*SSPOPDPTR)(ptr);
1007 break;
fc15ae8f
NC
1008 case SAVEt_COP_ARYBASE:
1009 ptr = SSPOPPTR;
1010 i = SSPOPINT;
1011 CopARYBASE_set((COP *)ptr, i);
1012 break;
68da3b2f
NC
1013 case SAVEt_COMPILE_WARNINGS:
1014 ptr = SSPOPPTR;
72dc9ed5 1015
68da3b2f
NC
1016 if (!specialWARN(PL_compiling.cop_warnings))
1017 PerlMemShared_free(PL_compiling.cop_warnings);
72dc9ed5 1018
10edeb5d 1019 PL_compiling.cop_warnings = (STRLEN*)ptr;
72dc9ed5 1020 break;
1ade1aa1
NC
1021 case SAVEt_RE_STATE:
1022 {
1023 const struct re_save_state *const state
1024 = (struct re_save_state *)
1025 (PL_savestack + PL_savestack_ix
1026 - SAVESTACK_ALLOC_FOR_RE_SAVE_STATE);
1027 PL_savestack_ix -= SAVESTACK_ALLOC_FOR_RE_SAVE_STATE;
1028
1ade1aa1
NC
1029 if (PL_reg_start_tmp != state->re_state_reg_start_tmp) {
1030 Safefree(PL_reg_start_tmp);
1ade1aa1 1031 }
1ade1aa1
NC
1032 if (PL_reg_poscache != state->re_state_reg_poscache) {
1033 Safefree(PL_reg_poscache);
1ade1aa1 1034 }
46ab3289 1035 Copy(state, &PL_reg_state, 1, struct re_save_state);
1ade1aa1
NC
1036 }
1037 break;
7c197c94
DM
1038 case SAVEt_PARSER:
1039 ptr = SSPOPPTR;
1040 parser_free((yy_parser *) ptr);
1041 break;
79072805 1042 default:
cea2e8a9 1043 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1044 }
1045 }
1046}
8990e307 1047
8990e307 1048void
864dbfa3 1049Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1050{
97aff369 1051 dVAR;
7918f24d
NC
1052
1053 PERL_ARGS_ASSERT_CX_DUMP;
1054
35ff7856 1055#ifdef DEBUGGING
22c35a8c 1056 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1057 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1058 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1059 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1060 PTR2UV(cx->blk_oldcop));
760ac839
LW
1061 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1062 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1063 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1064 PTR2UV(cx->blk_oldpm));
760ac839 1065 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1066 }
6b35e009 1067 switch (CxTYPE(cx)) {
8990e307
LW
1068 case CXt_NULL:
1069 case CXt_BLOCK:
1070 break;
146174a9 1071 case CXt_FORMAT:
f9c764c5
NC
1072 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%"UVxf"\n",
1073 PTR2UV(cx->blk_format.cv));
1074 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%"UVxf"\n",
1075 PTR2UV(cx->blk_format.gv));
1076 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%"UVxf"\n",
1077 PTR2UV(cx->blk_format.dfoutgv));
1078 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n",
bafb2adc 1079 (int)CxHASARGS(cx));
f9c764c5
NC
1080 PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%"UVxf"\n",
1081 PTR2UV(cx->blk_format.retop));
146174a9 1082 break;
8990e307 1083 case CXt_SUB:
146174a9
CB
1084 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1085 PTR2UV(cx->blk_sub.cv));
760ac839 1086 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1087 (long)cx->blk_sub.olddepth);
760ac839 1088 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
bafb2adc
NC
1089 (int)CxHASARGS(cx));
1090 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx));
f39bc417
DM
1091 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1092 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1093 break;
1094 case CXt_EVAL:
760ac839 1095 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
85a64632 1096 (long)CxOLD_IN_EVAL(cx));
760ac839 1097 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
85a64632
NC
1098 PL_op_name[CxOLD_OP_TYPE(cx)],
1099 PL_op_desc[CxOLD_OP_TYPE(cx)]);
0f79a09d
GS
1100 if (cx->blk_eval.old_namesv)
1101 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
aa07b2f6 1102 SvPVX_const(cx->blk_eval.old_namesv));
146174a9
CB
1103 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1105 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1106 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1107 break;
1108
c6fdafd0 1109 case CXt_LOOP_LAZYIV:
d01136d6 1110 case CXt_LOOP_LAZYSV:
3b719c58
NC
1111 case CXt_LOOP_FOR:
1112 case CXt_LOOP_PLAIN:
0cbdab38 1113 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx));
760ac839 1114 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1115 (long)cx->blk_loop.resetsp);
022eaa24
NC
1116 PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%"UVxf"\n",
1117 PTR2UV(cx->blk_loop.my_op));
146174a9 1118 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
022eaa24 1119 PTR2UV(CX_LOOP_NEXTOP_GET(cx)));
d01136d6 1120 /* XXX: not accurate for LAZYSV/IV */
146174a9 1121 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
d01136d6
BS
1122 PTR2UV(cx->blk_loop.state_u.ary.ary));
1123 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1124 (long)cx->blk_loop.state_u.ary.ix);
146174a9
CB
1125 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1126 PTR2UV(CxITERVAR(cx)));
8990e307
LW
1127 break;
1128
1129 case CXt_SUBST:
760ac839 1130 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1131 (long)cx->sb_iters);
760ac839 1132 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1133 (long)cx->sb_maxiters);
35ef4773
GS
1134 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1135 (long)cx->sb_rflags);
760ac839 1136 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
c5bed6a7 1137 (long)CxONCE(cx));
760ac839 1138 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1139 cx->sb_orig);
146174a9
CB
1140 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1141 PTR2UV(cx->sb_dstr));
1142 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1143 PTR2UV(cx->sb_targ));
1144 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1145 PTR2UV(cx->sb_s));
1146 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1147 PTR2UV(cx->sb_m));
1148 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1149 PTR2UV(cx->sb_strend));
1150 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1151 PTR2UV(cx->sb_rxres));
8990e307
LW
1152 break;
1153 }
65e66c80 1154#else
96a5add6 1155 PERL_UNUSED_CONTEXT;
65e66c80 1156 PERL_UNUSED_ARG(cx);
17c3b450 1157#endif /* DEBUGGING */
35ff7856 1158}
241d1a3b
NC
1159
1160/*
1161 * Local variables:
1162 * c-indentation-style: bsd
1163 * c-basic-offset: 4
1164 * indent-tabs-mode: t
1165 * End:
1166 *
37442d52
RGS
1167 * ex: set ts=8 sts=4 sw=4 noet:
1168 */