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Adding const qualifiers
[perl5.git] / scope.c
CommitLineData
a0d0e21e 1/* scope.c
79072805 2 *
4bb101f2 3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
241d1a3b 4 * 2000, 2001, 2002, 2003, 2004, 2005, 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/*
12 * "For the fashion of Minas Tirith was such that it was built on seven
13 * levels..."
79072805
LW
14 */
15
ddfa107c 16/* This file contains functions to manipulate several of Perl's stacks;
166f8a29
DM
17 * in particular it contains code to push various types of things onto
18 * the savestack, then to pop them off and perform the correct restorative
19 * action for each one. This corresponds to the cleanup Perl does at
20 * each scope exit.
21 */
22
79072805 23#include "EXTERN.h"
864dbfa3 24#define PERL_IN_SCOPE_C
79072805
LW
25#include "perl.h"
26
a0d0e21e 27SV**
864dbfa3 28Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
a0d0e21e 29{
3280af22 30 PL_stack_sp = sp;
2ce36478 31#ifndef STRESS_REALLOC
3280af22 32 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
2ce36478 33#else
6b88bc9c 34 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
2ce36478 35#endif
3280af22 36 return PL_stack_sp;
a0d0e21e
LW
37}
38
2ce36478
SM
39#ifndef STRESS_REALLOC
40#define GROW(old) ((old) * 3 / 2)
41#else
42#define GROW(old) ((old) + 1)
43#endif
44
e336de0d 45PERL_SI *
864dbfa3 46Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d
GS
47{
48 PERL_SI *si;
e336de0d
GS
49 New(56, si, 1, PERL_SI);
50 si->si_stack = newAV();
51 AvREAL_off(si->si_stack);
52 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 53 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
54 AvFILLp(si->si_stack) = 0;
55 si->si_prev = 0;
56 si->si_next = 0;
57 si->si_cxmax = cxitems - 1;
58 si->si_cxix = -1;
e788e7d3 59 si->si_type = PERLSI_UNDEF;
9965345d
JH
60 New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
61 /* Without any kind of initialising PUSHSUBST()
62 * in pp_subst() will read uninitialised heap. */
63 Poison(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
64 return si;
65}
66
79072805 67I32
864dbfa3 68Perl_cxinc(pTHX)
79072805 69{
4fc93207 70 IV old_max = cxstack_max;
2ce36478 71 cxstack_max = GROW(cxstack_max);
c09156bb 72 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
9965345d
JH
73 /* Without any kind of initialising deep enough recursion
74 * will end up reading uninitialised PERL_CONTEXTs. */
75 Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
76 return cxstack_ix + 1;
77}
78
79072805 79void
864dbfa3 80Perl_push_scope(pTHX)
79072805 81{
3280af22
NIS
82 if (PL_scopestack_ix == PL_scopestack_max) {
83 PL_scopestack_max = GROW(PL_scopestack_max);
84 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 85 }
3280af22 86 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
87
88}
89
90void
864dbfa3 91Perl_pop_scope(pTHX)
79072805 92{
35a4481c 93 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 94 LEAVE_SCOPE(oldsave);
79072805
LW
95}
96
97void
864dbfa3 98Perl_markstack_grow(pTHX)
a0d0e21e 99{
35a4481c
AL
100 const I32 oldmax = PL_markstack_max - PL_markstack;
101 const I32 newmax = GROW(oldmax);
a0d0e21e 102
3280af22
NIS
103 Renew(PL_markstack, newmax, I32);
104 PL_markstack_ptr = PL_markstack + oldmax;
105 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
106}
107
108void
864dbfa3 109Perl_savestack_grow(pTHX)
79072805 110{
8aacddc1 111 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 112 Renew(PL_savestack, PL_savestack_max, ANY);
79072805
LW
113}
114
4b3c1a47
AE
115void
116Perl_savestack_grow_cnt(pTHX_ I32 need)
117{
118 PL_savestack_max = PL_savestack_ix + need;
119 Renew(PL_savestack, PL_savestack_max, ANY);
120}
121
2ce36478
SM
122#undef GROW
123
79072805 124void
864dbfa3 125Perl_tmps_grow(pTHX_ I32 n)
677b06e3 126{
677b06e3
GS
127#ifndef STRESS_REALLOC
128 if (n < 128)
129 n = (PL_tmps_max < 512) ? 128 : 512;
130#endif
131 PL_tmps_max = PL_tmps_ix + n + 1;
132 Renew(PL_tmps_stack, PL_tmps_max, SV*);
133}
134
135
136void
864dbfa3 137Perl_free_tmps(pTHX)
79072805
LW
138{
139 /* XXX should tmps_floor live in cxstack? */
35a4481c 140 const I32 myfloor = PL_tmps_floor;
3280af22
NIS
141 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
142 SV* sv = PL_tmps_stack[PL_tmps_ix];
143 PL_tmps_stack[PL_tmps_ix--] = Nullsv;
8aacddc1 144 if (sv && sv != &PL_sv_undef) {
463ee0b2 145 SvTEMP_off(sv);
8990e307 146 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 147 }
79072805
LW
148 }
149}
150
76e3520e 151STATIC SV *
cea2e8a9 152S_save_scalar_at(pTHX_ SV **sptr)
79072805
LW
153{
154 register SV *sv;
7a4c00b4 155 SV *osv = *sptr;
79072805 156
7a4c00b4 157 sv = *sptr = NEWSV(0,0);
a0d0e21e 158 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
ac117f44 159 MAGIC *mg;
79072805 160 sv_upgrade(sv, SvTYPE(osv));
a0d0e21e 161 if (SvGMAGICAL(osv)) {
35a4481c 162 const bool oldtainted = PL_tainted;
5cfc7842 163 mg_get(osv); /* note, can croak! */
14befaf4
DM
164 if (PL_tainting && PL_tainted &&
165 (mg = mg_find(osv, PERL_MAGIC_taint))) {
748a9306
LW
166 SAVESPTR(mg->mg_obj);
167 mg->mg_obj = osv;
168 }
a0d0e21e 169 SvFLAGS(osv) |= (SvFLAGS(osv) &
8aacddc1 170 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 171 PL_tainted = oldtainted;
a0d0e21e 172 }
79072805 173 SvMAGIC(sv) = SvMAGIC(osv);
ac117f44
RGS
174 /* if it's a special scalar or if it has no 'set' magic,
175 * propagate the SvREADONLY flag. --rgs 20030922 */
176 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
dda0e828
RGS
177 if (mg->mg_type == '\0'
178 || !(mg->mg_virtual && mg->mg_virtual->svt_set))
ac117f44
RGS
179 {
180 SvFLAGS(sv) |= SvREADONLY(osv);
181 break;
182 }
183 }
184 SvFLAGS(sv) |= SvMAGICAL(osv);
2d5e9e5d
JH
185 /* XXX SvMAGIC() is *shared* between osv and sv. This can
186 * lead to coredumps when both SVs are destroyed without one
187 * of their SvMAGIC() slots being NULLed. */
3280af22 188 PL_localizing = 1;
79072805 189 SvSETMAGIC(sv);
3280af22 190 PL_localizing = 0;
79072805
LW
191 }
192 return sv;
193}
194
7a4c00b4 195SV *
864dbfa3 196Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 197{
4e4c362e 198 SV **sptr = &GvSV(gv);
7a4c00b4 199 SSCHECK(3);
4e4c362e
GS
200 SSPUSHPTR(SvREFCNT_inc(gv));
201 SSPUSHPTR(SvREFCNT_inc(*sptr));
7a4c00b4 202 SSPUSHINT(SAVEt_SV);
4e4c362e 203 return save_scalar_at(sptr);
7a4c00b4
PP
204}
205
206SV*
864dbfa3 207Perl_save_svref(pTHX_ SV **sptr)
7a4c00b4
PP
208{
209 SSCHECK(3);
210 SSPUSHPTR(sptr);
4e4c362e 211 SSPUSHPTR(SvREFCNT_inc(*sptr));
7a4c00b4
PP
212 SSPUSHINT(SAVEt_SVREF);
213 return save_scalar_at(sptr);
214}
215
f4dd75d9 216/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
217 * restore a global SV to its prior contents, freeing new value. */
218void
864dbfa3 219Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 220{
b9d12d37
GS
221 SSCHECK(3);
222 SSPUSHPTR(sptr);
223 SSPUSHPTR(SvREFCNT_inc(*sptr));
224 SSPUSHINT(SAVEt_GENERIC_SVREF);
225}
226
f4dd75d9
GS
227/* Like save_pptr(), but also Safefree()s the new value if it is different
228 * from the old one. Can be used to restore a global char* to its prior
229 * contents, freeing new value. */
230void
231Perl_save_generic_pvref(pTHX_ char **str)
232{
f4dd75d9
GS
233 SSCHECK(3);
234 SSPUSHPTR(str);
235 SSPUSHPTR(*str);
236 SSPUSHINT(SAVEt_GENERIC_PVREF);
237}
238
05ec9bb3
NIS
239/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
240 * Can be used to restore a shared global char* to its prior
241 * contents, freeing new value. */
242void
243Perl_save_shared_pvref(pTHX_ char **str)
244{
245 SSCHECK(3);
246 SSPUSHPTR(str);
247 SSPUSHPTR(*str);
248 SSPUSHINT(SAVEt_SHARED_PVREF);
249}
250
14f338dc
DM
251/* set the SvFLAGS specified by mask to the values in val */
252
253void
254Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
255{
256 SSCHECK(4);
257 SSPUSHPTR(sv);
258 SSPUSHINT(mask);
259 SSPUSHINT(val);
260 SSPUSHINT(SAVEt_SET_SVFLAGS);
261}
262
79072805 263void
864dbfa3 264Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 265{
4b3c1a47 266 SSGROW(6);
fb73857a
PP
267 SSPUSHIV((IV)SvLEN(gv));
268 SvLEN(gv) = 0; /* forget that anything was allocated here */
269 SSPUSHIV((IV)SvCUR(gv));
270 SSPUSHPTR(SvPVX(gv));
271 SvPOK_off(gv);
4633a7c4 272 SSPUSHPTR(SvREFCNT_inc(gv));
5f05dabc 273 SSPUSHPTR(GvGP(gv));
79072805
LW
274 SSPUSHINT(SAVEt_GP);
275
5f05dabc
PP
276 if (empty) {
277 register GP *gp;
fae75791 278
146174a9
CB
279 Newz(602, gp, 1, GP);
280
fae75791 281 if (GvCVu(gv))
3280af22 282 PL_sub_generation++; /* taking a method out of circulation */
146174a9
CB
283 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
284 gp->gp_io = newIO();
285 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
286 }
44a8e56a 287 GvGP(gv) = gp_ref(gp);
5f05dabc 288 GvSV(gv) = NEWSV(72,0);
146174a9 289 GvLINE(gv) = CopLINE(PL_curcop);
94051fc1 290 GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
5f05dabc
PP
291 GvEGV(gv) = gv;
292 }
293 else {
44a8e56a 294 gp_ref(GvGP(gv));
5f05dabc
PP
295 GvINTRO_on(gv);
296 }
79072805 297}
79072805 298
79072805 299AV *
864dbfa3 300Perl_save_ary(pTHX_ GV *gv)
79072805 301{
67a38de0
NIS
302 AV *oav = GvAVn(gv);
303 AV *av;
fb73857a 304
67a38de0
NIS
305 if (!AvREAL(oav) && AvREIFY(oav))
306 av_reify(oav);
79072805
LW
307 SSCHECK(3);
308 SSPUSHPTR(gv);
67a38de0 309 SSPUSHPTR(oav);
79072805
LW
310 SSPUSHINT(SAVEt_AV);
311
312 GvAV(gv) = Null(AV*);
fb73857a
PP
313 av = GvAVn(gv);
314 if (SvMAGIC(oav)) {
315 SvMAGIC(av) = SvMAGIC(oav);
32da55ab 316 SvFLAGS((SV*)av) |= SvMAGICAL(oav);
fb73857a
PP
317 SvMAGICAL_off(oav);
318 SvMAGIC(oav) = 0;
3280af22 319 PL_localizing = 1;
fb73857a 320 SvSETMAGIC((SV*)av);
3280af22 321 PL_localizing = 0;
fb73857a
PP
322 }
323 return av;
79072805
LW
324}
325
326HV *
864dbfa3 327Perl_save_hash(pTHX_ GV *gv)
79072805 328{
fb73857a
PP
329 HV *ohv, *hv;
330
79072805
LW
331 SSCHECK(3);
332 SSPUSHPTR(gv);
fb73857a 333 SSPUSHPTR(ohv = GvHVn(gv));
79072805
LW
334 SSPUSHINT(SAVEt_HV);
335
336 GvHV(gv) = Null(HV*);
fb73857a
PP
337 hv = GvHVn(gv);
338 if (SvMAGIC(ohv)) {
339 SvMAGIC(hv) = SvMAGIC(ohv);
32da55ab 340 SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
fb73857a
PP
341 SvMAGICAL_off(ohv);
342 SvMAGIC(ohv) = 0;
3280af22 343 PL_localizing = 1;
fb73857a 344 SvSETMAGIC((SV*)hv);
3280af22 345 PL_localizing = 0;
fb73857a
PP
346 }
347 return hv;
79072805
LW
348}
349
350void
864dbfa3 351Perl_save_item(pTHX_ register SV *item)
79072805 352{
f2b990bf 353 register SV *sv = newSVsv(item);
79072805
LW
354
355 SSCHECK(3);
356 SSPUSHPTR(item); /* remember the pointer */
79072805
LW
357 SSPUSHPTR(sv); /* remember the value */
358 SSPUSHINT(SAVEt_ITEM);
359}
360
361void
864dbfa3 362Perl_save_int(pTHX_ int *intp)
79072805
LW
363{
364 SSCHECK(3);
365 SSPUSHINT(*intp);
366 SSPUSHPTR(intp);
367 SSPUSHINT(SAVEt_INT);
368}
369
370void
864dbfa3 371Perl_save_long(pTHX_ long int *longp)
85e6fe83
LW
372{
373 SSCHECK(3);
374 SSPUSHLONG(*longp);
375 SSPUSHPTR(longp);
376 SSPUSHINT(SAVEt_LONG);
377}
378
379void
9febdf04
RH
380Perl_save_bool(pTHX_ bool *boolp)
381{
382 SSCHECK(3);
383 SSPUSHBOOL(*boolp);
384 SSPUSHPTR(boolp);
385 SSPUSHINT(SAVEt_BOOL);
386}
387
388void
864dbfa3 389Perl_save_I32(pTHX_ I32 *intp)
79072805
LW
390{
391 SSCHECK(3);
392 SSPUSHINT(*intp);
393 SSPUSHPTR(intp);
394 SSPUSHINT(SAVEt_I32);
395}
396
a0d0e21e 397void
864dbfa3 398Perl_save_I16(pTHX_ I16 *intp)
55497cff
PP
399{
400 SSCHECK(3);
401 SSPUSHINT(*intp);
402 SSPUSHPTR(intp);
403 SSPUSHINT(SAVEt_I16);
404}
405
406void
146174a9
CB
407Perl_save_I8(pTHX_ I8 *bytep)
408{
146174a9
CB
409 SSCHECK(3);
410 SSPUSHINT(*bytep);
411 SSPUSHPTR(bytep);
412 SSPUSHINT(SAVEt_I8);
413}
414
415void
864dbfa3 416Perl_save_iv(pTHX_ IV *ivp)
a0d0e21e
LW
417{
418 SSCHECK(3);
4aa0a1f7 419 SSPUSHIV(*ivp);
a0d0e21e
LW
420 SSPUSHPTR(ivp);
421 SSPUSHINT(SAVEt_IV);
422}
423
85e6fe83
LW
424/* Cannot use save_sptr() to store a char* since the SV** cast will
425 * force word-alignment and we'll miss the pointer.
426 */
427void
864dbfa3 428Perl_save_pptr(pTHX_ char **pptr)
85e6fe83
LW
429{
430 SSCHECK(3);
431 SSPUSHPTR(*pptr);
432 SSPUSHPTR(pptr);
433 SSPUSHINT(SAVEt_PPTR);
434}
435
79072805 436void
146174a9
CB
437Perl_save_vptr(pTHX_ void *ptr)
438{
146174a9
CB
439 SSCHECK(3);
440 SSPUSHPTR(*(char**)ptr);
441 SSPUSHPTR(ptr);
442 SSPUSHINT(SAVEt_VPTR);
443}
444
445void
864dbfa3 446Perl_save_sptr(pTHX_ SV **sptr)
79072805
LW
447{
448 SSCHECK(3);
449 SSPUSHPTR(*sptr);
450 SSPUSHPTR(sptr);
451 SSPUSHINT(SAVEt_SPTR);
452}
453
c3564e5c
GS
454void
455Perl_save_padsv(pTHX_ PADOFFSET off)
456{
c3564e5c 457 SSCHECK(4);
f3548bdc 458 ASSERT_CURPAD_ACTIVE("save_padsv");
c3564e5c 459 SSPUSHPTR(PL_curpad[off]);
f3548bdc 460 SSPUSHPTR(PL_comppad);
c3564e5c
GS
461 SSPUSHLONG((long)off);
462 SSPUSHINT(SAVEt_PADSV);
463}
464
54b9620d 465SV **
864dbfa3 466Perl_save_threadsv(pTHX_ PADOFFSET i)
54b9620d 467{
cea2e8a9 468 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
54b9620d 469 return 0;
54b9620d
MB
470}
471
79072805 472void
864dbfa3 473Perl_save_nogv(pTHX_ GV *gv)
79072805
LW
474{
475 SSCHECK(2);
476 SSPUSHPTR(gv);
477 SSPUSHINT(SAVEt_NSTAB);
478}
479
480void
864dbfa3 481Perl_save_hptr(pTHX_ HV **hptr)
79072805
LW
482{
483 SSCHECK(3);
85e6fe83 484 SSPUSHPTR(*hptr);
79072805
LW
485 SSPUSHPTR(hptr);
486 SSPUSHINT(SAVEt_HPTR);
487}
488
489void
864dbfa3 490Perl_save_aptr(pTHX_ AV **aptr)
79072805
LW
491{
492 SSCHECK(3);
85e6fe83 493 SSPUSHPTR(*aptr);
79072805
LW
494 SSPUSHPTR(aptr);
495 SSPUSHINT(SAVEt_APTR);
496}
497
498void
864dbfa3 499Perl_save_freesv(pTHX_ SV *sv)
8990e307
LW
500{
501 SSCHECK(2);
502 SSPUSHPTR(sv);
503 SSPUSHINT(SAVEt_FREESV);
504}
505
506void
26d9b02f
JH
507Perl_save_mortalizesv(pTHX_ SV *sv)
508{
509 SSCHECK(2);
510 SSPUSHPTR(sv);
511 SSPUSHINT(SAVEt_MORTALIZESV);
512}
513
514void
864dbfa3 515Perl_save_freeop(pTHX_ OP *o)
8990e307
LW
516{
517 SSCHECK(2);
11343788 518 SSPUSHPTR(o);
8990e307
LW
519 SSPUSHINT(SAVEt_FREEOP);
520}
521
522void
864dbfa3 523Perl_save_freepv(pTHX_ char *pv)
8990e307
LW
524{
525 SSCHECK(2);
526 SSPUSHPTR(pv);
527 SSPUSHINT(SAVEt_FREEPV);
528}
529
530void
864dbfa3 531Perl_save_clearsv(pTHX_ SV **svp)
8990e307 532{
f3548bdc 533 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 534 SSCHECK(2);
3280af22 535 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 536 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 537 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
538}
539
540void
864dbfa3 541Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307
LW
542{
543 SSCHECK(4);
544 SSPUSHINT(klen);
545 SSPUSHPTR(key);
4e4c362e 546 SSPUSHPTR(SvREFCNT_inc(hv));
8990e307
LW
547 SSPUSHINT(SAVEt_DELETE);
548}
549
550void
864dbfa3 551Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
79072805
LW
552{
553 register SV *sv;
554 register I32 i;
555
79072805 556 for (i = 1; i <= maxsarg; i++) {
79072805
LW
557 sv = NEWSV(0,0);
558 sv_setsv(sv,sarg[i]);
f46d017c
GS
559 SSCHECK(3);
560 SSPUSHPTR(sarg[i]); /* remember the pointer */
79072805
LW
561 SSPUSHPTR(sv); /* remember the value */
562 SSPUSHINT(SAVEt_ITEM);
563 }
564}
565
566void
146174a9 567Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
a0d0e21e
LW
568{
569 SSCHECK(3);
570 SSPUSHDPTR(f);
571 SSPUSHPTR(p);
572 SSPUSHINT(SAVEt_DESTRUCTOR);
573}
574
575void
146174a9
CB
576Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
577{
146174a9
CB
578 SSCHECK(3);
579 SSPUSHDXPTR(f);
580 SSPUSHPTR(p);
581 SSPUSHINT(SAVEt_DESTRUCTOR_X);
582}
583
584void
35a4481c 585Perl_save_aelem(pTHX_ const AV *av, I32 idx, SV **sptr)
4e4c362e 586{
bfc4de9f 587 SV *sv;
4e4c362e
GS
588 SSCHECK(4);
589 SSPUSHPTR(SvREFCNT_inc(av));
590 SSPUSHINT(idx);
591 SSPUSHPTR(SvREFCNT_inc(*sptr));
592 SSPUSHINT(SAVEt_AELEM);
5dd42e15
DM
593 /* if it gets reified later, the restore will have the wrong refcnt */
594 if (!AvREAL(av) && AvREIFY(av))
595 SvREFCNT_inc(*sptr);
4e4c362e 596 save_scalar_at(sptr);
bfc4de9f
DM
597 sv = *sptr;
598 /* If we're localizing a tied array element, this new sv
599 * won't actually be stored in the array - so it won't get
600 * reaped when the localize ends. Ensure it gets reaped by
601 * mortifying it instead. DAPM */
602 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
603 sv_2mortal(sv);
4e4c362e
GS
604}
605
606void
35a4481c 607Perl_save_helem(pTHX_ const HV *hv, SV *key, SV **sptr)
4e4c362e 608{
bfc4de9f 609 SV *sv;
4e4c362e
GS
610 SSCHECK(4);
611 SSPUSHPTR(SvREFCNT_inc(hv));
612 SSPUSHPTR(SvREFCNT_inc(key));
613 SSPUSHPTR(SvREFCNT_inc(*sptr));
614 SSPUSHINT(SAVEt_HELEM);
615 save_scalar_at(sptr);
bfc4de9f
DM
616 sv = *sptr;
617 /* If we're localizing a tied hash element, this new sv
618 * won't actually be stored in the hash - so it won't get
619 * reaped when the localize ends. Ensure it gets reaped by
620 * mortifying it instead. DAPM */
621 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
622 sv_2mortal(sv);
4e4c362e
GS
623}
624
625void
864dbfa3 626Perl_save_op(pTHX)
462e5cf6 627{
462e5cf6 628 SSCHECK(2);
533c011a 629 SSPUSHPTR(PL_op);
462e5cf6
MB
630 SSPUSHINT(SAVEt_OP);
631}
632
455ece5e 633I32
864dbfa3 634Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 635{
35a4481c 636 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 637 - (char*)PL_savestack);
35a4481c 638 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
455ece5e
AD
639
640 /* SSCHECK may not be good enough */
641 while (PL_savestack_ix + elems + 2 > PL_savestack_max)
8aacddc1 642 savestack_grow();
455ece5e
AD
643
644 PL_savestack_ix += elems;
645 SSPUSHINT(elems);
646 SSPUSHINT(SAVEt_ALLOC);
647 return start;
648}
649
462e5cf6 650void
864dbfa3 651Perl_leave_scope(pTHX_ I32 base)
79072805
LW
652{
653 register SV *sv;
654 register SV *value;
655 register GV *gv;
656 register AV *av;
657 register HV *hv;
658 register void* ptr;
f4dd75d9 659 register char* str;
161b7d16 660 I32 i;
79072805
LW
661
662 if (base < -1)
cea2e8a9 663 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 664 while (PL_savestack_ix > base) {
79072805
LW
665 switch (SSPOPINT) {
666 case SAVEt_ITEM: /* normal string */
667 value = (SV*)SSPOPPTR;
668 sv = (SV*)SSPOPPTR;
669 sv_replace(sv,value);
3280af22 670 PL_localizing = 2;
79072805 671 SvSETMAGIC(sv);
3280af22 672 PL_localizing = 0;
79072805 673 break;
8aacddc1 674 case SAVEt_SV: /* scalar reference */
79072805
LW
675 value = (SV*)SSPOPPTR;
676 gv = (GV*)SSPOPPTR;
7a4c00b4 677 ptr = &GvSV(gv);
5dd42e15 678 av = (AV*)gv; /* what to refcnt_dec */
7a4c00b4 679 goto restore_sv;
8aacddc1 680 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9
GS
681 str = (char*)SSPOPPTR;
682 ptr = SSPOPPTR;
683 if (*(char**)ptr != str) {
684 Safefree(*(char**)ptr);
685 *(char**)ptr = str;
686 }
687 break;
05ec9bb3
NIS
688 case SAVEt_SHARED_PVREF: /* shared pv */
689 str = (char*)SSPOPPTR;
690 ptr = SSPOPPTR;
691 if (*(char**)ptr != str) {
5e54c26f 692#ifdef NETWARE
9ecbcc42 693 PerlMem_free(*(char**)ptr);
5e54c26f 694#else
05ec9bb3 695 PerlMemShared_free(*(char**)ptr);
5e54c26f 696#endif
05ec9bb3
NIS
697 *(char**)ptr = str;
698 }
699 break;
8aacddc1 700 case SAVEt_GENERIC_SVREF: /* generic sv */
b9d12d37
GS
701 value = (SV*)SSPOPPTR;
702 ptr = SSPOPPTR;
f4dd75d9
GS
703 sv = *(SV**)ptr;
704 *(SV**)ptr = value;
705 SvREFCNT_dec(sv);
b9d12d37
GS
706 SvREFCNT_dec(value);
707 break;
8aacddc1 708 case SAVEt_SVREF: /* scalar reference */
7a4c00b4 709 value = (SV*)SSPOPPTR;
79072805 710 ptr = SSPOPPTR;
5dd42e15 711 av = Nullav; /* what to refcnt_dec */
7a4c00b4 712 restore_sv:
79072805 713 sv = *(SV**)ptr;
146174a9 714 DEBUG_S(PerlIO_printf(Perl_debug_log,
54b9620d 715 "restore svref: %p %p:%s -> %p:%s\n",
8aacddc1 716 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
cdec4f49
JH
717 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
718 SvTYPE(sv) != SVt_PVGV)
719 {
a0d0e21e
LW
720 (void)SvUPGRADE(value, SvTYPE(sv));
721 SvMAGIC(value) = SvMAGIC(sv);
722 SvFLAGS(value) |= SvMAGICAL(sv);
723 SvMAGICAL_off(sv);
79072805 724 SvMAGIC(sv) = 0;
a0d0e21e 725 }
2d5e9e5d
JH
726 /* XXX This branch is pretty bogus. This code irretrievably
727 * clears(!) the magic on the SV (either to avoid further
728 * croaking that might ensue when the SvSETMAGIC() below is
729 * called, or to avoid two different SVs pointing at the same
730 * SvMAGIC()). This needs a total rethink. --GSAR */
cdec4f49
JH
731 else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
732 SvTYPE(value) != SVt_PVGV)
733 {
7a4c00b4 734 SvFLAGS(value) |= (SvFLAGS(value) &
8aacddc1 735 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
7a4c00b4 736 SvMAGICAL_off(value);
2d5e9e5d
JH
737 /* XXX this is a leak when we get here because the
738 * mg_get() in save_scalar_at() croaked */
739 SvMAGIC(value) = 0;
7a4c00b4 740 }
a0d0e21e 741 *(SV**)ptr = value;
db733481 742 SvREFCNT_dec(sv);
3280af22 743 PL_localizing = 2;
a0d0e21e 744 SvSETMAGIC(value);
3280af22 745 PL_localizing = 0;
4e4c362e 746 SvREFCNT_dec(value);
5dd42e15
DM
747 if (av) /* actually an av, hv or gv */
748 SvREFCNT_dec(av);
8aacddc1
NIS
749 break;
750 case SAVEt_AV: /* array reference */
79072805
LW
751 av = (AV*)SSPOPPTR;
752 gv = (GV*)SSPOPPTR;
fb73857a 753 if (GvAV(gv)) {
35a4481c 754 AV * const goner = GvAV(gv);
fb73857a 755 SvMAGIC(av) = SvMAGIC(goner);
32da55ab 756 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
fb73857a
PP
757 SvMAGICAL_off(goner);
758 SvMAGIC(goner) = 0;
759 SvREFCNT_dec(goner);
760 }
8aacddc1 761 GvAV(gv) = av;
fb73857a 762 if (SvMAGICAL(av)) {
3280af22 763 PL_localizing = 2;
fb73857a 764 SvSETMAGIC((SV*)av);
3280af22 765 PL_localizing = 0;
fb73857a 766 }
8aacddc1
NIS
767 break;
768 case SAVEt_HV: /* hash reference */
79072805
LW
769 hv = (HV*)SSPOPPTR;
770 gv = (GV*)SSPOPPTR;
fb73857a 771 if (GvHV(gv)) {
35a4481c 772 HV * const goner = GvHV(gv);
fb73857a
PP
773 SvMAGIC(hv) = SvMAGIC(goner);
774 SvFLAGS(hv) |= SvMAGICAL(goner);
775 SvMAGICAL_off(goner);
776 SvMAGIC(goner) = 0;
777 SvREFCNT_dec(goner);
778 }
8aacddc1 779 GvHV(gv) = hv;
fb73857a 780 if (SvMAGICAL(hv)) {
3280af22 781 PL_localizing = 2;
fb73857a 782 SvSETMAGIC((SV*)hv);
3280af22 783 PL_localizing = 0;
fb73857a 784 }
8aacddc1 785 break;
79072805
LW
786 case SAVEt_INT: /* int reference */
787 ptr = SSPOPPTR;
788 *(int*)ptr = (int)SSPOPINT;
789 break;
85e6fe83
LW
790 case SAVEt_LONG: /* long reference */
791 ptr = SSPOPPTR;
792 *(long*)ptr = (long)SSPOPLONG;
793 break;
9febdf04
RH
794 case SAVEt_BOOL: /* bool reference */
795 ptr = SSPOPPTR;
796 *(bool*)ptr = (bool)SSPOPBOOL;
797 break;
79072805
LW
798 case SAVEt_I32: /* I32 reference */
799 ptr = SSPOPPTR;
800 *(I32*)ptr = (I32)SSPOPINT;
801 break;
55497cff
PP
802 case SAVEt_I16: /* I16 reference */
803 ptr = SSPOPPTR;
804 *(I16*)ptr = (I16)SSPOPINT;
805 break;
146174a9
CB
806 case SAVEt_I8: /* I8 reference */
807 ptr = SSPOPPTR;
808 *(I8*)ptr = (I8)SSPOPINT;
809 break;
a0d0e21e
LW
810 case SAVEt_IV: /* IV reference */
811 ptr = SSPOPPTR;
812 *(IV*)ptr = (IV)SSPOPIV;
813 break;
79072805
LW
814 case SAVEt_SPTR: /* SV* reference */
815 ptr = SSPOPPTR;
816 *(SV**)ptr = (SV*)SSPOPPTR;
817 break;
146174a9 818 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
819 case SAVEt_PPTR: /* char* reference */
820 ptr = SSPOPPTR;
821 *(char**)ptr = (char*)SSPOPPTR;
822 break;
79072805
LW
823 case SAVEt_HPTR: /* HV* reference */
824 ptr = SSPOPPTR;
825 *(HV**)ptr = (HV*)SSPOPPTR;
826 break;
827 case SAVEt_APTR: /* AV* reference */
828 ptr = SSPOPPTR;
829 *(AV**)ptr = (AV*)SSPOPPTR;
830 break;
831 case SAVEt_NSTAB:
832 gv = (GV*)SSPOPPTR;
1f96a9ed 833 (void)sv_clear((SV*)gv);
79072805 834 break;
fb73857a 835 case SAVEt_GP: /* scalar reference */
79072805
LW
836 ptr = SSPOPPTR;
837 gv = (GV*)SSPOPPTR;
8aacddc1
NIS
838 if (SvPVX(gv) && SvLEN(gv) > 0) {
839 Safefree(SvPVX(gv));
840 }
841 SvPVX(gv) = (char *)SSPOPPTR;
842 SvCUR(gv) = (STRLEN)SSPOPIV;
843 SvLEN(gv) = (STRLEN)SSPOPIV;
844 gp_free(gv);
845 GvGP(gv) = (GP*)ptr;
fae75791 846 if (GvCVu(gv))
3280af22 847 PL_sub_generation++; /* putting a method back into circulation */
4633a7c4 848 SvREFCNT_dec(gv);
8aacddc1 849 break;
8990e307
LW
850 case SAVEt_FREESV:
851 ptr = SSPOPPTR;
852 SvREFCNT_dec((SV*)ptr);
853 break;
26d9b02f
JH
854 case SAVEt_MORTALIZESV:
855 ptr = SSPOPPTR;
856 sv_2mortal((SV*)ptr);
857 break;
8990e307
LW
858 case SAVEt_FREEOP:
859 ptr = SSPOPPTR;
f3548bdc 860 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
861 op_free((OP*)ptr);
862 break;
863 case SAVEt_FREEPV:
864 ptr = SSPOPPTR;
865 Safefree((char*)ptr);
866 break;
867 case SAVEt_CLEARSV:
3280af22 868 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 869 sv = *(SV**)ptr;
dd2155a4
DM
870
871 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
872 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
873 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
874 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
875 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
876 ));
877
bc44cdaf
GS
878 /* Can clear pad variable in place? */
879 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
880 /*
881 * if a my variable that was made readonly is going out of
882 * scope, we want to remove the readonlyness so that it can
883 * go out of scope quietly
8aacddc1 884 */
a26e96df 885 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
886 SvREADONLY_off(sv);
887
6fc92669 888 if (SvTHINKFIRST(sv))
840a7b70 889 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
890 if (SvMAGICAL(sv))
891 mg_free(sv);
8990e307
LW
892
893 switch (SvTYPE(sv)) {
894 case SVt_NULL:
895 break;
896 case SVt_PVAV:
44a8e56a 897 av_clear((AV*)sv);
8990e307
LW
898 break;
899 case SVt_PVHV:
44a8e56a 900 hv_clear((HV*)sv);
8990e307
LW
901 break;
902 case SVt_PVCV:
cea2e8a9 903 Perl_croak(aTHX_ "panic: leave_scope pad code");
8990e307 904 default:
0c34ef67 905 SvOK_off(sv);
8990e307
LW
906 break;
907 }
d9d18af6 908 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
909 }
910 else { /* Someone has a claim on this, so abandon it. */
35a4481c 911 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307
LW
912 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
913 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
914 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
915 default: *(SV**)ptr = NEWSV(0,0); break;
916 }
53868620 917 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
918 /* preserve pad nature, but also mark as not live
919 * for any closure capturing */
2740392c 920 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
921 }
922 break;
923 case SAVEt_DELETE:
924 ptr = SSPOPPTR;
925 hv = (HV*)ptr;
926 ptr = SSPOPPTR;
748a9306 927 (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
4e4c362e 928 SvREFCNT_dec(hv);
8aacddc1 929 Safefree(ptr);
8990e307 930 break;
a0d0e21e
LW
931 case SAVEt_DESTRUCTOR:
932 ptr = SSPOPPTR;
146174a9
CB
933 (*SSPOPDPTR)(ptr);
934 break;
935 case SAVEt_DESTRUCTOR_X:
936 ptr = SSPOPPTR;
acfe0abc 937 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
938 break;
939 case SAVEt_REGCONTEXT:
455ece5e 940 case SAVEt_ALLOC:
161b7d16 941 i = SSPOPINT;
3280af22 942 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 943 break;
55497cff 944 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 945 i = SSPOPINT;
3280af22 946 PL_stack_sp = PL_stack_base + i;
55497cff 947 break;
161b7d16
SM
948 case SAVEt_AELEM: /* array element */
949 value = (SV*)SSPOPPTR;
950 i = SSPOPINT;
951 av = (AV*)SSPOPPTR;
5dd42e15
DM
952 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
953 SvREFCNT_dec(value);
161b7d16 954 ptr = av_fetch(av,i,1);
4e4c362e
GS
955 if (ptr) {
956 sv = *(SV**)ptr;
3280af22 957 if (sv && sv != &PL_sv_undef) {
14befaf4 958 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
4e4c362e 959 (void)SvREFCNT_inc(sv);
4e4c362e
GS
960 goto restore_sv;
961 }
962 }
963 SvREFCNT_dec(av);
964 SvREFCNT_dec(value);
965 break;
161b7d16
SM
966 case SAVEt_HELEM: /* hash element */
967 value = (SV*)SSPOPPTR;
9002cb76 968 sv = (SV*)SSPOPPTR;
161b7d16
SM
969 hv = (HV*)SSPOPPTR;
970 ptr = hv_fetch_ent(hv, sv, 1, 0);
4e4c362e 971 if (ptr) {
35a4481c 972 const SV * const oval = HeVAL((HE*)ptr);
3280af22 973 if (oval && oval != &PL_sv_undef) {
4e4c362e 974 ptr = &HeVAL((HE*)ptr);
14befaf4 975 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
4e4c362e 976 (void)SvREFCNT_inc(*(SV**)ptr);
4e4c362e 977 SvREFCNT_dec(sv);
5dd42e15 978 av = (AV*)hv; /* what to refcnt_dec */
4e4c362e
GS
979 goto restore_sv;
980 }
981 }
982 SvREFCNT_dec(hv);
983 SvREFCNT_dec(sv);
984 SvREFCNT_dec(value);
985 break;
462e5cf6 986 case SAVEt_OP:
533c011a 987 PL_op = (OP*)SSPOPPTR;
462e5cf6 988 break;
25eaa213 989 case SAVEt_HINTS:
045ac317
RGS
990 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
991 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
992 GvHV(PL_hintgv) = NULL;
993 }
3280af22 994 *(I32*)&PL_hints = (I32)SSPOPINT;
dfa41748
DM
995 if (PL_hints & HINT_LOCALIZE_HH) {
996 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
997 GvHV(PL_hintgv) = (HV*)SSPOPPTR;
998 }
999
b3ac6de7 1000 break;
cb50131a 1001 case SAVEt_COMPPAD:
f3548bdc 1002 PL_comppad = (PAD*)SSPOPPTR;
58ed4fbe 1003 if (PL_comppad)
cb50131a
CB
1004 PL_curpad = AvARRAY(PL_comppad);
1005 else
1006 PL_curpad = Null(SV**);
1007 break;
c3564e5c
GS
1008 case SAVEt_PADSV:
1009 {
35a4481c 1010 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
c3564e5c
GS
1011 ptr = SSPOPPTR;
1012 if (ptr)
f3548bdc 1013 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
c3564e5c
GS
1014 }
1015 break;
8b7059b1
DM
1016 case SAVEt_SAVESWITCHSTACK:
1017 {
1018 dSP;
1019 AV* t = (AV*)SSPOPPTR;
1020 AV* f = (AV*)SSPOPPTR;
1021 SWITCHSTACK(t,f);
1022 PL_curstackinfo->si_stack = f;
1023 }
1024 break;
14f338dc
DM
1025 case SAVEt_SET_SVFLAGS:
1026 {
35a4481c
AL
1027 const U32 val = (U32)SSPOPINT;
1028 const U32 mask = (U32)SSPOPINT;
14f338dc
DM
1029 sv = (SV*)SSPOPPTR;
1030 SvFLAGS(sv) &= ~mask;
1031 SvFLAGS(sv) |= val;
1032 }
1033 break;
79072805 1034 default:
cea2e8a9 1035 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1036 }
1037 }
1038}
8990e307 1039
8990e307 1040void
864dbfa3 1041Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1042{
35ff7856 1043#ifdef DEBUGGING
22c35a8c 1044 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1045 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1046 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1047 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1048 PTR2UV(cx->blk_oldcop));
760ac839
LW
1049 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1050 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
146174a9
CB
1051 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1052 PTR2UV(cx->blk_oldpm));
760ac839 1053 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1054 }
6b35e009 1055 switch (CxTYPE(cx)) {
8990e307
LW
1056 case CXt_NULL:
1057 case CXt_BLOCK:
1058 break;
146174a9
CB
1059 case CXt_FORMAT:
1060 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1061 PTR2UV(cx->blk_sub.cv));
1062 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1063 PTR2UV(cx->blk_sub.gv));
1064 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1065 PTR2UV(cx->blk_sub.dfoutgv));
1066 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1067 (int)cx->blk_sub.hasargs);
f39bc417
DM
1068 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1069 PTR2UV(cx->blk_sub.retop));
146174a9 1070 break;
8990e307 1071 case CXt_SUB:
146174a9
CB
1072 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1073 PTR2UV(cx->blk_sub.cv));
760ac839 1074 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1075 (long)cx->blk_sub.olddepth);
760ac839 1076 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
8990e307 1077 (int)cx->blk_sub.hasargs);
146174a9
CB
1078 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1079 (int)cx->blk_sub.lval);
f39bc417
DM
1080 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1081 PTR2UV(cx->blk_sub.retop));
8990e307
LW
1082 break;
1083 case CXt_EVAL:
760ac839 1084 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
8990e307 1085 (long)cx->blk_eval.old_in_eval);
760ac839 1086 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
22c35a8c
GS
1087 PL_op_name[cx->blk_eval.old_op_type],
1088 PL_op_desc[cx->blk_eval.old_op_type]);
0f79a09d
GS
1089 if (cx->blk_eval.old_namesv)
1090 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1091 SvPVX(cx->blk_eval.old_namesv));
146174a9
CB
1092 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1093 PTR2UV(cx->blk_eval.old_eval_root));
f39bc417
DM
1094 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1095 PTR2UV(cx->blk_eval.retop));
8990e307
LW
1096 break;
1097
1098 case CXt_LOOP:
760ac839 1099 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
8990e307 1100 cx->blk_loop.label);
760ac839 1101 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1102 (long)cx->blk_loop.resetsp);
146174a9
CB
1103 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_loop.redo_op));
1105 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1106 PTR2UV(cx->blk_loop.next_op));
1107 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1108 PTR2UV(cx->blk_loop.last_op));
760ac839 1109 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
8990e307 1110 (long)cx->blk_loop.iterix);
146174a9
CB
1111 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1112 PTR2UV(cx->blk_loop.iterary));
1113 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1114 PTR2UV(CxITERVAR(cx)));
1115 if (CxITERVAR(cx))
1116 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1117 PTR2UV(cx->blk_loop.itersave));
1118 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1119 PTR2UV(cx->blk_loop.iterlval));
8990e307
LW
1120 break;
1121
1122 case CXt_SUBST:
760ac839 1123 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1124 (long)cx->sb_iters);
760ac839 1125 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1126 (long)cx->sb_maxiters);
35ef4773
GS
1127 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1128 (long)cx->sb_rflags);
760ac839 1129 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
8990e307 1130 (long)cx->sb_once);
760ac839 1131 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1132 cx->sb_orig);
146174a9
CB
1133 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1134 PTR2UV(cx->sb_dstr));
1135 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1136 PTR2UV(cx->sb_targ));
1137 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1138 PTR2UV(cx->sb_s));
1139 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1140 PTR2UV(cx->sb_m));
1141 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1142 PTR2UV(cx->sb_strend));
1143 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1144 PTR2UV(cx->sb_rxres));
8990e307
LW
1145 break;
1146 }
17c3b450 1147#endif /* DEBUGGING */
35ff7856 1148}
241d1a3b
NC
1149
1150/*
1151 * Local variables:
1152 * c-indentation-style: bsd
1153 * c-basic-offset: 4
1154 * indent-tabs-mode: t
1155 * End:
1156 *
edf815fd 1157 * vim: shiftwidth=4:
241d1a3b 1158*/