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Refactor VOS patches for bleadperl and perl-5.8.x
[perl5.git] / scope.c
CommitLineData
a0d0e21e 1/* scope.c
79072805 2 *
4bb101f2
JH
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 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
16#include "EXTERN.h"
864dbfa3 17#define PERL_IN_SCOPE_C
79072805
LW
18#include "perl.h"
19
14dd3ad8 20#if defined(PERL_FLEXIBLE_EXCEPTIONS)
312caa8e 21void *
146174a9
CB
22Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
23 protect_body_t body, ...)
312caa8e 24{
c5be433b
GS
25 void *ret;
26 va_list args;
27 va_start(args, body);
146174a9 28 ret = vdefault_protect(pcur_env, excpt, body, &args);
c5be433b
GS
29 va_end(args);
30 return ret;
31}
32
33void *
146174a9
CB
34Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt,
35 protect_body_t body, va_list *args)
c5be433b 36{
312caa8e
CS
37 int ex;
38 void *ret;
39
312caa8e
CS
40 JMPENV_PUSH(ex);
41 if (ex)
42 ret = NULL;
c5be433b
GS
43 else
44 ret = CALL_FPTR(body)(aTHX_ *args);
a6c40364 45 *excpt = ex;
312caa8e
CS
46 JMPENV_POP;
47 return ret;
48}
14dd3ad8 49#endif
312caa8e 50
a0d0e21e 51SV**
864dbfa3 52Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
a0d0e21e 53{
3280af22 54 PL_stack_sp = sp;
2ce36478 55#ifndef STRESS_REALLOC
3280af22 56 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
2ce36478 57#else
6b88bc9c 58 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
2ce36478 59#endif
3280af22 60 return PL_stack_sp;
a0d0e21e
LW
61}
62
2ce36478
SM
63#ifndef STRESS_REALLOC
64#define GROW(old) ((old) * 3 / 2)
65#else
66#define GROW(old) ((old) + 1)
67#endif
68
e336de0d 69PERL_SI *
864dbfa3 70Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
e336de0d
GS
71{
72 PERL_SI *si;
e336de0d
GS
73 New(56, si, 1, PERL_SI);
74 si->si_stack = newAV();
75 AvREAL_off(si->si_stack);
76 av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0);
3280af22 77 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
e336de0d
GS
78 AvFILLp(si->si_stack) = 0;
79 si->si_prev = 0;
80 si->si_next = 0;
81 si->si_cxmax = cxitems - 1;
82 si->si_cxix = -1;
e788e7d3 83 si->si_type = PERLSI_UNDEF;
9965345d
JH
84 New(56, si->si_cxstack, cxitems, PERL_CONTEXT);
85 /* Without any kind of initialising PUSHSUBST()
86 * in pp_subst() will read uninitialised heap. */
87 Poison(si->si_cxstack, cxitems, PERL_CONTEXT);
e336de0d
GS
88 return si;
89}
90
79072805 91I32
864dbfa3 92Perl_cxinc(pTHX)
79072805 93{
4fc93207 94 IV old_max = cxstack_max;
2ce36478 95 cxstack_max = GROW(cxstack_max);
c09156bb 96 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
9965345d
JH
97 /* Without any kind of initialising deep enough recursion
98 * will end up reading uninitialised PERL_CONTEXTs. */
99 Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT);
79072805
LW
100 return cxstack_ix + 1;
101}
102
103void
864dbfa3 104Perl_push_return(pTHX_ OP *retop)
79072805 105{
3280af22
NIS
106 if (PL_retstack_ix == PL_retstack_max) {
107 PL_retstack_max = GROW(PL_retstack_max);
108 Renew(PL_retstack, PL_retstack_max, OP*);
79072805 109 }
3280af22 110 PL_retstack[PL_retstack_ix++] = retop;
79072805
LW
111}
112
113OP *
864dbfa3 114Perl_pop_return(pTHX)
79072805 115{
3280af22
NIS
116 if (PL_retstack_ix > 0)
117 return PL_retstack[--PL_retstack_ix];
79072805
LW
118 else
119 return Nullop;
120}
121
122void
864dbfa3 123Perl_push_scope(pTHX)
79072805 124{
3280af22
NIS
125 if (PL_scopestack_ix == PL_scopestack_max) {
126 PL_scopestack_max = GROW(PL_scopestack_max);
127 Renew(PL_scopestack, PL_scopestack_max, I32);
79072805 128 }
3280af22 129 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
79072805
LW
130
131}
132
133void
864dbfa3 134Perl_pop_scope(pTHX)
79072805 135{
3280af22 136 I32 oldsave = PL_scopestack[--PL_scopestack_ix];
8990e307 137 LEAVE_SCOPE(oldsave);
79072805
LW
138}
139
140void
864dbfa3 141Perl_markstack_grow(pTHX)
a0d0e21e 142{
3280af22 143 I32 oldmax = PL_markstack_max - PL_markstack;
2ce36478 144 I32 newmax = GROW(oldmax);
a0d0e21e 145
3280af22
NIS
146 Renew(PL_markstack, newmax, I32);
147 PL_markstack_ptr = PL_markstack + oldmax;
148 PL_markstack_max = PL_markstack + newmax;
a0d0e21e
LW
149}
150
151void
864dbfa3 152Perl_savestack_grow(pTHX)
79072805 153{
8aacddc1 154 PL_savestack_max = GROW(PL_savestack_max) + 4;
3280af22 155 Renew(PL_savestack, PL_savestack_max, ANY);
79072805
LW
156}
157
4b3c1a47
AE
158void
159Perl_savestack_grow_cnt(pTHX_ I32 need)
160{
161 PL_savestack_max = PL_savestack_ix + need;
162 Renew(PL_savestack, PL_savestack_max, ANY);
163}
164
2ce36478
SM
165#undef GROW
166
79072805 167void
864dbfa3 168Perl_tmps_grow(pTHX_ I32 n)
677b06e3 169{
677b06e3
GS
170#ifndef STRESS_REALLOC
171 if (n < 128)
172 n = (PL_tmps_max < 512) ? 128 : 512;
173#endif
174 PL_tmps_max = PL_tmps_ix + n + 1;
175 Renew(PL_tmps_stack, PL_tmps_max, SV*);
176}
177
178
179void
864dbfa3 180Perl_free_tmps(pTHX)
79072805
LW
181{
182 /* XXX should tmps_floor live in cxstack? */
3280af22
NIS
183 I32 myfloor = PL_tmps_floor;
184 while (PL_tmps_ix > myfloor) { /* clean up after last statement */
185 SV* sv = PL_tmps_stack[PL_tmps_ix];
186 PL_tmps_stack[PL_tmps_ix--] = Nullsv;
8aacddc1 187 if (sv && sv != &PL_sv_undef) {
463ee0b2 188 SvTEMP_off(sv);
8990e307 189 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2 190 }
79072805
LW
191 }
192}
193
76e3520e 194STATIC SV *
cea2e8a9 195S_save_scalar_at(pTHX_ SV **sptr)
79072805
LW
196{
197 register SV *sv;
7a4c00b4 198 SV *osv = *sptr;
79072805 199
7a4c00b4 200 sv = *sptr = NEWSV(0,0);
a0d0e21e 201 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
ac117f44 202 MAGIC *mg;
79072805 203 sv_upgrade(sv, SvTYPE(osv));
a0d0e21e 204 if (SvGMAGICAL(osv)) {
3280af22 205 bool oldtainted = PL_tainted;
5cfc7842 206 mg_get(osv); /* note, can croak! */
14befaf4
DM
207 if (PL_tainting && PL_tainted &&
208 (mg = mg_find(osv, PERL_MAGIC_taint))) {
748a9306
LW
209 SAVESPTR(mg->mg_obj);
210 mg->mg_obj = osv;
211 }
a0d0e21e 212 SvFLAGS(osv) |= (SvFLAGS(osv) &
8aacddc1 213 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3280af22 214 PL_tainted = oldtainted;
a0d0e21e 215 }
79072805 216 SvMAGIC(sv) = SvMAGIC(osv);
ac117f44
RGS
217 /* if it's a special scalar or if it has no 'set' magic,
218 * propagate the SvREADONLY flag. --rgs 20030922 */
219 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
220 if (SvMAGIC(sv)->mg_type == '\0'
221 || !SvMAGIC(sv)->mg_virtual->svt_set)
222 {
223 SvFLAGS(sv) |= SvREADONLY(osv);
224 break;
225 }
226 }
227 SvFLAGS(sv) |= SvMAGICAL(osv);
2d5e9e5d
JH
228 /* XXX SvMAGIC() is *shared* between osv and sv. This can
229 * lead to coredumps when both SVs are destroyed without one
230 * of their SvMAGIC() slots being NULLed. */
3280af22 231 PL_localizing = 1;
79072805 232 SvSETMAGIC(sv);
3280af22 233 PL_localizing = 0;
79072805
LW
234 }
235 return sv;
236}
237
7a4c00b4 238SV *
864dbfa3 239Perl_save_scalar(pTHX_ GV *gv)
7a4c00b4 240{
4e4c362e 241 SV **sptr = &GvSV(gv);
7a4c00b4 242 SSCHECK(3);
4e4c362e
GS
243 SSPUSHPTR(SvREFCNT_inc(gv));
244 SSPUSHPTR(SvREFCNT_inc(*sptr));
7a4c00b4 245 SSPUSHINT(SAVEt_SV);
4e4c362e 246 return save_scalar_at(sptr);
7a4c00b4
PP
247}
248
249SV*
864dbfa3 250Perl_save_svref(pTHX_ SV **sptr)
7a4c00b4
PP
251{
252 SSCHECK(3);
253 SSPUSHPTR(sptr);
4e4c362e 254 SSPUSHPTR(SvREFCNT_inc(*sptr));
7a4c00b4
PP
255 SSPUSHINT(SAVEt_SVREF);
256 return save_scalar_at(sptr);
257}
258
f4dd75d9 259/* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
b9d12d37
GS
260 * restore a global SV to its prior contents, freeing new value. */
261void
864dbfa3 262Perl_save_generic_svref(pTHX_ SV **sptr)
b9d12d37 263{
b9d12d37
GS
264 SSCHECK(3);
265 SSPUSHPTR(sptr);
266 SSPUSHPTR(SvREFCNT_inc(*sptr));
267 SSPUSHINT(SAVEt_GENERIC_SVREF);
268}
269
f4dd75d9
GS
270/* Like save_pptr(), but also Safefree()s the new value if it is different
271 * from the old one. Can be used to restore a global char* to its prior
272 * contents, freeing new value. */
273void
274Perl_save_generic_pvref(pTHX_ char **str)
275{
f4dd75d9
GS
276 SSCHECK(3);
277 SSPUSHPTR(str);
278 SSPUSHPTR(*str);
279 SSPUSHINT(SAVEt_GENERIC_PVREF);
280}
281
05ec9bb3
NIS
282/* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree().
283 * Can be used to restore a shared global char* to its prior
284 * contents, freeing new value. */
285void
286Perl_save_shared_pvref(pTHX_ char **str)
287{
288 SSCHECK(3);
289 SSPUSHPTR(str);
290 SSPUSHPTR(*str);
291 SSPUSHINT(SAVEt_SHARED_PVREF);
292}
293
14f338dc
DM
294/* set the SvFLAGS specified by mask to the values in val */
295
296void
297Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
298{
299 SSCHECK(4);
300 SSPUSHPTR(sv);
301 SSPUSHINT(mask);
302 SSPUSHINT(val);
303 SSPUSHINT(SAVEt_SET_SVFLAGS);
304}
305
79072805 306void
864dbfa3 307Perl_save_gp(pTHX_ GV *gv, I32 empty)
79072805 308{
4b3c1a47 309 SSGROW(6);
fb73857a
PP
310 SSPUSHIV((IV)SvLEN(gv));
311 SvLEN(gv) = 0; /* forget that anything was allocated here */
312 SSPUSHIV((IV)SvCUR(gv));
313 SSPUSHPTR(SvPVX(gv));
314 SvPOK_off(gv);
4633a7c4 315 SSPUSHPTR(SvREFCNT_inc(gv));
5f05dabc 316 SSPUSHPTR(GvGP(gv));
79072805
LW
317 SSPUSHINT(SAVEt_GP);
318
5f05dabc
PP
319 if (empty) {
320 register GP *gp;
fae75791 321
146174a9
CB
322 Newz(602, gp, 1, GP);
323
fae75791 324 if (GvCVu(gv))
3280af22 325 PL_sub_generation++; /* taking a method out of circulation */
146174a9
CB
326 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
327 gp->gp_io = newIO();
328 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
329 }
44a8e56a 330 GvGP(gv) = gp_ref(gp);
5f05dabc 331 GvSV(gv) = NEWSV(72,0);
146174a9 332 GvLINE(gv) = CopLINE(PL_curcop);
94051fc1 333 GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
5f05dabc
PP
334 GvEGV(gv) = gv;
335 }
336 else {
44a8e56a 337 gp_ref(GvGP(gv));
5f05dabc
PP
338 GvINTRO_on(gv);
339 }
79072805 340}
79072805 341
79072805 342AV *
864dbfa3 343Perl_save_ary(pTHX_ GV *gv)
79072805 344{
67a38de0
NIS
345 AV *oav = GvAVn(gv);
346 AV *av;
fb73857a 347
67a38de0
NIS
348 if (!AvREAL(oav) && AvREIFY(oav))
349 av_reify(oav);
79072805
LW
350 SSCHECK(3);
351 SSPUSHPTR(gv);
67a38de0 352 SSPUSHPTR(oav);
79072805
LW
353 SSPUSHINT(SAVEt_AV);
354
355 GvAV(gv) = Null(AV*);
fb73857a
PP
356 av = GvAVn(gv);
357 if (SvMAGIC(oav)) {
358 SvMAGIC(av) = SvMAGIC(oav);
32da55ab 359 SvFLAGS((SV*)av) |= SvMAGICAL(oav);
fb73857a
PP
360 SvMAGICAL_off(oav);
361 SvMAGIC(oav) = 0;
3280af22 362 PL_localizing = 1;
fb73857a 363 SvSETMAGIC((SV*)av);
3280af22 364 PL_localizing = 0;
fb73857a
PP
365 }
366 return av;
79072805
LW
367}
368
369HV *
864dbfa3 370Perl_save_hash(pTHX_ GV *gv)
79072805 371{
fb73857a
PP
372 HV *ohv, *hv;
373
79072805
LW
374 SSCHECK(3);
375 SSPUSHPTR(gv);
fb73857a 376 SSPUSHPTR(ohv = GvHVn(gv));
79072805
LW
377 SSPUSHINT(SAVEt_HV);
378
379 GvHV(gv) = Null(HV*);
fb73857a
PP
380 hv = GvHVn(gv);
381 if (SvMAGIC(ohv)) {
382 SvMAGIC(hv) = SvMAGIC(ohv);
32da55ab 383 SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
fb73857a
PP
384 SvMAGICAL_off(ohv);
385 SvMAGIC(ohv) = 0;
3280af22 386 PL_localizing = 1;
fb73857a 387 SvSETMAGIC((SV*)hv);
3280af22 388 PL_localizing = 0;
fb73857a
PP
389 }
390 return hv;
79072805
LW
391}
392
393void
864dbfa3 394Perl_save_item(pTHX_ register SV *item)
79072805 395{
f46d017c 396 register SV *sv = NEWSV(0,0);
79072805 397
f46d017c 398 sv_setsv(sv,item);
79072805
LW
399 SSCHECK(3);
400 SSPUSHPTR(item); /* remember the pointer */
79072805
LW
401 SSPUSHPTR(sv); /* remember the value */
402 SSPUSHINT(SAVEt_ITEM);
403}
404
405void
864dbfa3 406Perl_save_int(pTHX_ int *intp)
79072805
LW
407{
408 SSCHECK(3);
409 SSPUSHINT(*intp);
410 SSPUSHPTR(intp);
411 SSPUSHINT(SAVEt_INT);
412}
413
414void
864dbfa3 415Perl_save_long(pTHX_ long int *longp)
85e6fe83
LW
416{
417 SSCHECK(3);
418 SSPUSHLONG(*longp);
419 SSPUSHPTR(longp);
420 SSPUSHINT(SAVEt_LONG);
421}
422
423void
9febdf04
RH
424Perl_save_bool(pTHX_ bool *boolp)
425{
426 SSCHECK(3);
427 SSPUSHBOOL(*boolp);
428 SSPUSHPTR(boolp);
429 SSPUSHINT(SAVEt_BOOL);
430}
431
432void
864dbfa3 433Perl_save_I32(pTHX_ I32 *intp)
79072805
LW
434{
435 SSCHECK(3);
436 SSPUSHINT(*intp);
437 SSPUSHPTR(intp);
438 SSPUSHINT(SAVEt_I32);
439}
440
a0d0e21e 441void
864dbfa3 442Perl_save_I16(pTHX_ I16 *intp)
55497cff
PP
443{
444 SSCHECK(3);
445 SSPUSHINT(*intp);
446 SSPUSHPTR(intp);
447 SSPUSHINT(SAVEt_I16);
448}
449
450void
146174a9
CB
451Perl_save_I8(pTHX_ I8 *bytep)
452{
146174a9
CB
453 SSCHECK(3);
454 SSPUSHINT(*bytep);
455 SSPUSHPTR(bytep);
456 SSPUSHINT(SAVEt_I8);
457}
458
459void
864dbfa3 460Perl_save_iv(pTHX_ IV *ivp)
a0d0e21e
LW
461{
462 SSCHECK(3);
4aa0a1f7 463 SSPUSHIV(*ivp);
a0d0e21e
LW
464 SSPUSHPTR(ivp);
465 SSPUSHINT(SAVEt_IV);
466}
467
85e6fe83
LW
468/* Cannot use save_sptr() to store a char* since the SV** cast will
469 * force word-alignment and we'll miss the pointer.
470 */
471void
864dbfa3 472Perl_save_pptr(pTHX_ char **pptr)
85e6fe83
LW
473{
474 SSCHECK(3);
475 SSPUSHPTR(*pptr);
476 SSPUSHPTR(pptr);
477 SSPUSHINT(SAVEt_PPTR);
478}
479
79072805 480void
146174a9
CB
481Perl_save_vptr(pTHX_ void *ptr)
482{
146174a9
CB
483 SSCHECK(3);
484 SSPUSHPTR(*(char**)ptr);
485 SSPUSHPTR(ptr);
486 SSPUSHINT(SAVEt_VPTR);
487}
488
489void
864dbfa3 490Perl_save_sptr(pTHX_ SV **sptr)
79072805
LW
491{
492 SSCHECK(3);
493 SSPUSHPTR(*sptr);
494 SSPUSHPTR(sptr);
495 SSPUSHINT(SAVEt_SPTR);
496}
497
c3564e5c
GS
498void
499Perl_save_padsv(pTHX_ PADOFFSET off)
500{
c3564e5c 501 SSCHECK(4);
f3548bdc 502 ASSERT_CURPAD_ACTIVE("save_padsv");
c3564e5c 503 SSPUSHPTR(PL_curpad[off]);
f3548bdc 504 SSPUSHPTR(PL_comppad);
c3564e5c
GS
505 SSPUSHLONG((long)off);
506 SSPUSHINT(SAVEt_PADSV);
507}
508
54b9620d 509SV **
864dbfa3 510Perl_save_threadsv(pTHX_ PADOFFSET i)
54b9620d 511{
cea2e8a9 512 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
54b9620d 513 return 0;
54b9620d
MB
514}
515
79072805 516void
864dbfa3 517Perl_save_nogv(pTHX_ GV *gv)
79072805
LW
518{
519 SSCHECK(2);
520 SSPUSHPTR(gv);
521 SSPUSHINT(SAVEt_NSTAB);
522}
523
524void
864dbfa3 525Perl_save_hptr(pTHX_ HV **hptr)
79072805
LW
526{
527 SSCHECK(3);
85e6fe83 528 SSPUSHPTR(*hptr);
79072805
LW
529 SSPUSHPTR(hptr);
530 SSPUSHINT(SAVEt_HPTR);
531}
532
533void
864dbfa3 534Perl_save_aptr(pTHX_ AV **aptr)
79072805
LW
535{
536 SSCHECK(3);
85e6fe83 537 SSPUSHPTR(*aptr);
79072805
LW
538 SSPUSHPTR(aptr);
539 SSPUSHINT(SAVEt_APTR);
540}
541
542void
864dbfa3 543Perl_save_freesv(pTHX_ SV *sv)
8990e307
LW
544{
545 SSCHECK(2);
546 SSPUSHPTR(sv);
547 SSPUSHINT(SAVEt_FREESV);
548}
549
550void
26d9b02f
JH
551Perl_save_mortalizesv(pTHX_ SV *sv)
552{
553 SSCHECK(2);
554 SSPUSHPTR(sv);
555 SSPUSHINT(SAVEt_MORTALIZESV);
556}
557
558void
864dbfa3 559Perl_save_freeop(pTHX_ OP *o)
8990e307
LW
560{
561 SSCHECK(2);
11343788 562 SSPUSHPTR(o);
8990e307
LW
563 SSPUSHINT(SAVEt_FREEOP);
564}
565
566void
864dbfa3 567Perl_save_freepv(pTHX_ char *pv)
8990e307
LW
568{
569 SSCHECK(2);
570 SSPUSHPTR(pv);
571 SSPUSHINT(SAVEt_FREEPV);
572}
573
574void
864dbfa3 575Perl_save_clearsv(pTHX_ SV **svp)
8990e307 576{
f3548bdc 577 ASSERT_CURPAD_ACTIVE("save_clearsv");
8990e307 578 SSCHECK(2);
3280af22 579 SSPUSHLONG((long)(svp-PL_curpad));
8990e307 580 SSPUSHINT(SAVEt_CLEARSV);
d9d18af6 581 SvPADSTALE_off(*svp); /* mark lexical as active */
8990e307
LW
582}
583
584void
864dbfa3 585Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
8990e307
LW
586{
587 SSCHECK(4);
588 SSPUSHINT(klen);
589 SSPUSHPTR(key);
4e4c362e 590 SSPUSHPTR(SvREFCNT_inc(hv));
8990e307
LW
591 SSPUSHINT(SAVEt_DELETE);
592}
593
594void
864dbfa3 595Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
79072805
LW
596{
597 register SV *sv;
598 register I32 i;
599
79072805 600 for (i = 1; i <= maxsarg; i++) {
79072805
LW
601 sv = NEWSV(0,0);
602 sv_setsv(sv,sarg[i]);
f46d017c
GS
603 SSCHECK(3);
604 SSPUSHPTR(sarg[i]); /* remember the pointer */
79072805
LW
605 SSPUSHPTR(sv); /* remember the value */
606 SSPUSHINT(SAVEt_ITEM);
607 }
608}
609
610void
146174a9 611Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
a0d0e21e
LW
612{
613 SSCHECK(3);
614 SSPUSHDPTR(f);
615 SSPUSHPTR(p);
616 SSPUSHINT(SAVEt_DESTRUCTOR);
617}
618
619void
146174a9
CB
620Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
621{
146174a9
CB
622 SSCHECK(3);
623 SSPUSHDXPTR(f);
624 SSPUSHPTR(p);
625 SSPUSHINT(SAVEt_DESTRUCTOR_X);
626}
627
628void
864dbfa3 629Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr)
4e4c362e 630{
bfc4de9f 631 SV *sv;
4e4c362e
GS
632 SSCHECK(4);
633 SSPUSHPTR(SvREFCNT_inc(av));
634 SSPUSHINT(idx);
635 SSPUSHPTR(SvREFCNT_inc(*sptr));
636 SSPUSHINT(SAVEt_AELEM);
5dd42e15
DM
637 /* if it gets reified later, the restore will have the wrong refcnt */
638 if (!AvREAL(av) && AvREIFY(av))
639 SvREFCNT_inc(*sptr);
4e4c362e 640 save_scalar_at(sptr);
bfc4de9f
DM
641 sv = *sptr;
642 /* If we're localizing a tied array element, this new sv
643 * won't actually be stored in the array - so it won't get
644 * reaped when the localize ends. Ensure it gets reaped by
645 * mortifying it instead. DAPM */
646 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
647 sv_2mortal(sv);
4e4c362e
GS
648}
649
650void
864dbfa3 651Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
4e4c362e 652{
bfc4de9f 653 SV *sv;
4e4c362e
GS
654 SSCHECK(4);
655 SSPUSHPTR(SvREFCNT_inc(hv));
656 SSPUSHPTR(SvREFCNT_inc(key));
657 SSPUSHPTR(SvREFCNT_inc(*sptr));
658 SSPUSHINT(SAVEt_HELEM);
659 save_scalar_at(sptr);
bfc4de9f
DM
660 sv = *sptr;
661 /* If we're localizing a tied hash element, this new sv
662 * won't actually be stored in the hash - so it won't get
663 * reaped when the localize ends. Ensure it gets reaped by
664 * mortifying it instead. DAPM */
665 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
666 sv_2mortal(sv);
4e4c362e
GS
667}
668
669void
864dbfa3 670Perl_save_op(pTHX)
462e5cf6 671{
462e5cf6 672 SSCHECK(2);
533c011a 673 SSPUSHPTR(PL_op);
462e5cf6
MB
674 SSPUSHINT(SAVEt_OP);
675}
676
455ece5e 677I32
864dbfa3 678Perl_save_alloc(pTHX_ I32 size, I32 pad)
455ece5e 679{
455ece5e 680 register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
8aacddc1 681 - (char*)PL_savestack);
455ece5e
AD
682 register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
683
684 /* SSCHECK may not be good enough */
685 while (PL_savestack_ix + elems + 2 > PL_savestack_max)
8aacddc1 686 savestack_grow();
455ece5e
AD
687
688 PL_savestack_ix += elems;
689 SSPUSHINT(elems);
690 SSPUSHINT(SAVEt_ALLOC);
691 return start;
692}
693
462e5cf6 694void
864dbfa3 695Perl_leave_scope(pTHX_ I32 base)
79072805
LW
696{
697 register SV *sv;
698 register SV *value;
699 register GV *gv;
700 register AV *av;
701 register HV *hv;
702 register void* ptr;
f4dd75d9 703 register char* str;
161b7d16 704 I32 i;
79072805
LW
705
706 if (base < -1)
cea2e8a9 707 Perl_croak(aTHX_ "panic: corrupt saved stack index");
3280af22 708 while (PL_savestack_ix > base) {
79072805
LW
709 switch (SSPOPINT) {
710 case SAVEt_ITEM: /* normal string */
711 value = (SV*)SSPOPPTR;
712 sv = (SV*)SSPOPPTR;
713 sv_replace(sv,value);
3280af22 714 PL_localizing = 2;
79072805 715 SvSETMAGIC(sv);
3280af22 716 PL_localizing = 0;
79072805 717 break;
8aacddc1 718 case SAVEt_SV: /* scalar reference */
79072805
LW
719 value = (SV*)SSPOPPTR;
720 gv = (GV*)SSPOPPTR;
7a4c00b4 721 ptr = &GvSV(gv);
5dd42e15 722 av = (AV*)gv; /* what to refcnt_dec */
7a4c00b4 723 goto restore_sv;
8aacddc1 724 case SAVEt_GENERIC_PVREF: /* generic pv */
f4dd75d9
GS
725 str = (char*)SSPOPPTR;
726 ptr = SSPOPPTR;
727 if (*(char**)ptr != str) {
728 Safefree(*(char**)ptr);
729 *(char**)ptr = str;
730 }
731 break;
05ec9bb3
NIS
732 case SAVEt_SHARED_PVREF: /* shared pv */
733 str = (char*)SSPOPPTR;
734 ptr = SSPOPPTR;
735 if (*(char**)ptr != str) {
5e54c26f 736#ifdef NETWARE
9ecbcc42 737 PerlMem_free(*(char**)ptr);
5e54c26f 738#else
05ec9bb3 739 PerlMemShared_free(*(char**)ptr);
5e54c26f 740#endif
05ec9bb3
NIS
741 *(char**)ptr = str;
742 }
743 break;
8aacddc1 744 case SAVEt_GENERIC_SVREF: /* generic sv */
b9d12d37
GS
745 value = (SV*)SSPOPPTR;
746 ptr = SSPOPPTR;
f4dd75d9
GS
747 sv = *(SV**)ptr;
748 *(SV**)ptr = value;
749 SvREFCNT_dec(sv);
b9d12d37
GS
750 SvREFCNT_dec(value);
751 break;
8aacddc1 752 case SAVEt_SVREF: /* scalar reference */
7a4c00b4 753 value = (SV*)SSPOPPTR;
79072805 754 ptr = SSPOPPTR;
5dd42e15 755 av = Nullav; /* what to refcnt_dec */
7a4c00b4 756 restore_sv:
79072805 757 sv = *(SV**)ptr;
146174a9 758 DEBUG_S(PerlIO_printf(Perl_debug_log,
54b9620d 759 "restore svref: %p %p:%s -> %p:%s\n",
8aacddc1 760 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
cdec4f49
JH
761 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
762 SvTYPE(sv) != SVt_PVGV)
763 {
a0d0e21e
LW
764 (void)SvUPGRADE(value, SvTYPE(sv));
765 SvMAGIC(value) = SvMAGIC(sv);
766 SvFLAGS(value) |= SvMAGICAL(sv);
767 SvMAGICAL_off(sv);
79072805 768 SvMAGIC(sv) = 0;
a0d0e21e 769 }
2d5e9e5d
JH
770 /* XXX This branch is pretty bogus. This code irretrievably
771 * clears(!) the magic on the SV (either to avoid further
772 * croaking that might ensue when the SvSETMAGIC() below is
773 * called, or to avoid two different SVs pointing at the same
774 * SvMAGIC()). This needs a total rethink. --GSAR */
cdec4f49
JH
775 else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
776 SvTYPE(value) != SVt_PVGV)
777 {
7a4c00b4 778 SvFLAGS(value) |= (SvFLAGS(value) &
8aacddc1 779 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
7a4c00b4 780 SvMAGICAL_off(value);
2d5e9e5d
JH
781 /* XXX this is a leak when we get here because the
782 * mg_get() in save_scalar_at() croaked */
783 SvMAGIC(value) = 0;
7a4c00b4 784 }
8aacddc1 785 SvREFCNT_dec(sv);
a0d0e21e 786 *(SV**)ptr = value;
3280af22 787 PL_localizing = 2;
a0d0e21e 788 SvSETMAGIC(value);
3280af22 789 PL_localizing = 0;
4e4c362e 790 SvREFCNT_dec(value);
5dd42e15
DM
791 if (av) /* actually an av, hv or gv */
792 SvREFCNT_dec(av);
8aacddc1
NIS
793 break;
794 case SAVEt_AV: /* array reference */
79072805
LW
795 av = (AV*)SSPOPPTR;
796 gv = (GV*)SSPOPPTR;
fb73857a
PP
797 if (GvAV(gv)) {
798 AV *goner = GvAV(gv);
799 SvMAGIC(av) = SvMAGIC(goner);
32da55ab 800 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
fb73857a
PP
801 SvMAGICAL_off(goner);
802 SvMAGIC(goner) = 0;
803 SvREFCNT_dec(goner);
804 }
8aacddc1 805 GvAV(gv) = av;
fb73857a 806 if (SvMAGICAL(av)) {
3280af22 807 PL_localizing = 2;
fb73857a 808 SvSETMAGIC((SV*)av);
3280af22 809 PL_localizing = 0;
fb73857a 810 }
8aacddc1
NIS
811 break;
812 case SAVEt_HV: /* hash reference */
79072805
LW
813 hv = (HV*)SSPOPPTR;
814 gv = (GV*)SSPOPPTR;
fb73857a
PP
815 if (GvHV(gv)) {
816 HV *goner = GvHV(gv);
817 SvMAGIC(hv) = SvMAGIC(goner);
818 SvFLAGS(hv) |= SvMAGICAL(goner);
819 SvMAGICAL_off(goner);
820 SvMAGIC(goner) = 0;
821 SvREFCNT_dec(goner);
822 }
8aacddc1 823 GvHV(gv) = hv;
fb73857a 824 if (SvMAGICAL(hv)) {
3280af22 825 PL_localizing = 2;
fb73857a 826 SvSETMAGIC((SV*)hv);
3280af22 827 PL_localizing = 0;
fb73857a 828 }
8aacddc1 829 break;
79072805
LW
830 case SAVEt_INT: /* int reference */
831 ptr = SSPOPPTR;
832 *(int*)ptr = (int)SSPOPINT;
833 break;
85e6fe83
LW
834 case SAVEt_LONG: /* long reference */
835 ptr = SSPOPPTR;
836 *(long*)ptr = (long)SSPOPLONG;
837 break;
9febdf04
RH
838 case SAVEt_BOOL: /* bool reference */
839 ptr = SSPOPPTR;
840 *(bool*)ptr = (bool)SSPOPBOOL;
841 break;
79072805
LW
842 case SAVEt_I32: /* I32 reference */
843 ptr = SSPOPPTR;
844 *(I32*)ptr = (I32)SSPOPINT;
845 break;
55497cff
PP
846 case SAVEt_I16: /* I16 reference */
847 ptr = SSPOPPTR;
848 *(I16*)ptr = (I16)SSPOPINT;
849 break;
146174a9
CB
850 case SAVEt_I8: /* I8 reference */
851 ptr = SSPOPPTR;
852 *(I8*)ptr = (I8)SSPOPINT;
853 break;
a0d0e21e
LW
854 case SAVEt_IV: /* IV reference */
855 ptr = SSPOPPTR;
856 *(IV*)ptr = (IV)SSPOPIV;
857 break;
79072805
LW
858 case SAVEt_SPTR: /* SV* reference */
859 ptr = SSPOPPTR;
860 *(SV**)ptr = (SV*)SSPOPPTR;
861 break;
146174a9 862 case SAVEt_VPTR: /* random* reference */
85e6fe83
LW
863 case SAVEt_PPTR: /* char* reference */
864 ptr = SSPOPPTR;
865 *(char**)ptr = (char*)SSPOPPTR;
866 break;
79072805
LW
867 case SAVEt_HPTR: /* HV* reference */
868 ptr = SSPOPPTR;
869 *(HV**)ptr = (HV*)SSPOPPTR;
870 break;
871 case SAVEt_APTR: /* AV* reference */
872 ptr = SSPOPPTR;
873 *(AV**)ptr = (AV*)SSPOPPTR;
874 break;
875 case SAVEt_NSTAB:
876 gv = (GV*)SSPOPPTR;
1f96a9ed 877 (void)sv_clear((SV*)gv);
79072805 878 break;
fb73857a 879 case SAVEt_GP: /* scalar reference */
79072805
LW
880 ptr = SSPOPPTR;
881 gv = (GV*)SSPOPPTR;
8aacddc1
NIS
882 if (SvPVX(gv) && SvLEN(gv) > 0) {
883 Safefree(SvPVX(gv));
884 }
885 SvPVX(gv) = (char *)SSPOPPTR;
886 SvCUR(gv) = (STRLEN)SSPOPIV;
887 SvLEN(gv) = (STRLEN)SSPOPIV;
888 gp_free(gv);
889 GvGP(gv) = (GP*)ptr;
fae75791 890 if (GvCVu(gv))
3280af22 891 PL_sub_generation++; /* putting a method back into circulation */
4633a7c4 892 SvREFCNT_dec(gv);
8aacddc1 893 break;
8990e307
LW
894 case SAVEt_FREESV:
895 ptr = SSPOPPTR;
896 SvREFCNT_dec((SV*)ptr);
897 break;
26d9b02f
JH
898 case SAVEt_MORTALIZESV:
899 ptr = SSPOPPTR;
900 sv_2mortal((SV*)ptr);
901 break;
8990e307
LW
902 case SAVEt_FREEOP:
903 ptr = SSPOPPTR;
f3548bdc 904 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
8990e307
LW
905 op_free((OP*)ptr);
906 break;
907 case SAVEt_FREEPV:
908 ptr = SSPOPPTR;
909 Safefree((char*)ptr);
910 break;
911 case SAVEt_CLEARSV:
3280af22 912 ptr = (void*)&PL_curpad[SSPOPLONG];
8990e307 913 sv = *(SV**)ptr;
dd2155a4
DM
914
915 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
f3548bdc
DM
916 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
917 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
918 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
dd2155a4
DM
919 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
920 ));
921
bc44cdaf
GS
922 /* Can clear pad variable in place? */
923 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
8aacddc1
NIS
924 /*
925 * if a my variable that was made readonly is going out of
926 * scope, we want to remove the readonlyness so that it can
927 * go out of scope quietly
8aacddc1 928 */
a26e96df 929 if (SvPADMY(sv) && !SvFAKE(sv))
8aacddc1
NIS
930 SvREADONLY_off(sv);
931
6fc92669 932 if (SvTHINKFIRST(sv))
840a7b70 933 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
a0d0e21e
LW
934 if (SvMAGICAL(sv))
935 mg_free(sv);
8990e307
LW
936
937 switch (SvTYPE(sv)) {
938 case SVt_NULL:
939 break;
940 case SVt_PVAV:
44a8e56a 941 av_clear((AV*)sv);
8990e307
LW
942 break;
943 case SVt_PVHV:
44a8e56a 944 hv_clear((HV*)sv);
8990e307
LW
945 break;
946 case SVt_PVCV:
cea2e8a9 947 Perl_croak(aTHX_ "panic: leave_scope pad code");
5377b701
CS
948 case SVt_RV:
949 case SVt_IV:
950 case SVt_NV:
951 (void)SvOK_off(sv);
8990e307
LW
952 break;
953 default:
a0d0e21e 954 (void)SvOK_off(sv);
5377b701 955 (void)SvOOK_off(sv);
8990e307
LW
956 break;
957 }
d9d18af6 958 SvPADSTALE_on(sv); /* mark as no longer live */
8990e307
LW
959 }
960 else { /* Someone has a claim on this, so abandon it. */
235cc2e3 961 U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
8990e307
LW
962 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
963 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
964 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
965 default: *(SV**)ptr = NEWSV(0,0); break;
966 }
53868620 967 SvREFCNT_dec(sv); /* Cast current value to the winds. */
d9d18af6
DM
968 /* preserve pad nature, but also mark as not live
969 * for any closure capturing */
2740392c 970 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
8990e307
LW
971 }
972 break;
973 case SAVEt_DELETE:
974 ptr = SSPOPPTR;
975 hv = (HV*)ptr;
976 ptr = SSPOPPTR;
748a9306 977 (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
4e4c362e 978 SvREFCNT_dec(hv);
8aacddc1 979 Safefree(ptr);
8990e307 980 break;
a0d0e21e
LW
981 case SAVEt_DESTRUCTOR:
982 ptr = SSPOPPTR;
146174a9
CB
983 (*SSPOPDPTR)(ptr);
984 break;
985 case SAVEt_DESTRUCTOR_X:
986 ptr = SSPOPPTR;
acfe0abc 987 (*SSPOPDXPTR)(aTHX_ ptr);
a0d0e21e
LW
988 break;
989 case SAVEt_REGCONTEXT:
455ece5e 990 case SAVEt_ALLOC:
161b7d16 991 i = SSPOPINT;
3280af22 992 PL_savestack_ix -= i; /* regexp must have croaked */
a0d0e21e 993 break;
55497cff 994 case SAVEt_STACK_POS: /* Position on Perl stack */
161b7d16 995 i = SSPOPINT;
3280af22 996 PL_stack_sp = PL_stack_base + i;
55497cff 997 break;
161b7d16
SM
998 case SAVEt_AELEM: /* array element */
999 value = (SV*)SSPOPPTR;
1000 i = SSPOPINT;
1001 av = (AV*)SSPOPPTR;
5dd42e15
DM
1002 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
1003 SvREFCNT_dec(value);
161b7d16 1004 ptr = av_fetch(av,i,1);
4e4c362e
GS
1005 if (ptr) {
1006 sv = *(SV**)ptr;
3280af22 1007 if (sv && sv != &PL_sv_undef) {
14befaf4 1008 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
4e4c362e 1009 (void)SvREFCNT_inc(sv);
4e4c362e
GS
1010 goto restore_sv;
1011 }
1012 }
1013 SvREFCNT_dec(av);
1014 SvREFCNT_dec(value);
1015 break;
161b7d16
SM
1016 case SAVEt_HELEM: /* hash element */
1017 value = (SV*)SSPOPPTR;
9002cb76 1018 sv = (SV*)SSPOPPTR;
161b7d16
SM
1019 hv = (HV*)SSPOPPTR;
1020 ptr = hv_fetch_ent(hv, sv, 1, 0);
4e4c362e
GS
1021 if (ptr) {
1022 SV *oval = HeVAL((HE*)ptr);
3280af22 1023 if (oval && oval != &PL_sv_undef) {
4e4c362e 1024 ptr = &HeVAL((HE*)ptr);
14befaf4 1025 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
4e4c362e 1026 (void)SvREFCNT_inc(*(SV**)ptr);
4e4c362e 1027 SvREFCNT_dec(sv);
5dd42e15 1028 av = (AV*)hv; /* what to refcnt_dec */
4e4c362e
GS
1029 goto restore_sv;
1030 }
1031 }
1032 SvREFCNT_dec(hv);
1033 SvREFCNT_dec(sv);
1034 SvREFCNT_dec(value);
1035 break;
462e5cf6 1036 case SAVEt_OP:
533c011a 1037 PL_op = (OP*)SSPOPPTR;
462e5cf6 1038 break;
25eaa213 1039 case SAVEt_HINTS:
045ac317
RGS
1040 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
1041 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
1042 GvHV(PL_hintgv) = NULL;
1043 }
3280af22 1044 *(I32*)&PL_hints = (I32)SSPOPINT;
b3ac6de7 1045 break;
cb50131a 1046 case SAVEt_COMPPAD:
f3548bdc 1047 PL_comppad = (PAD*)SSPOPPTR;
b3a3b3a1 1048 if (PL_comppad) {
cb50131a 1049 PL_curpad = AvARRAY(PL_comppad);
b3a3b3a1
DM
1050 SvREFCNT_dec(PL_comppad);
1051 }
cb50131a
CB
1052 else
1053 PL_curpad = Null(SV**);
1054 break;
c3564e5c
GS
1055 case SAVEt_PADSV:
1056 {
1057 PADOFFSET off = (PADOFFSET)SSPOPLONG;
1058 ptr = SSPOPPTR;
1059 if (ptr)
f3548bdc 1060 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
c3564e5c
GS
1061 }
1062 break;
14f338dc
DM
1063 case SAVEt_SET_SVFLAGS:
1064 {
1065 U32 val = (U32)SSPOPINT;
1066 U32 mask = (U32)SSPOPINT;
1067 sv = (SV*)SSPOPPTR;
1068 SvFLAGS(sv) &= ~mask;
1069 SvFLAGS(sv) |= val;
1070 }
1071 break;
79072805 1072 default:
cea2e8a9 1073 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
79072805
LW
1074 }
1075 }
1076}
8990e307 1077
8990e307 1078void
864dbfa3 1079Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
8990e307 1080{
35ff7856 1081#ifdef DEBUGGING
22c35a8c 1082 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
6b35e009 1083 if (CxTYPE(cx) != CXt_SUBST) {
760ac839 1084 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
146174a9
CB
1085 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1086 PTR2UV(cx->blk_oldcop));
760ac839
LW
1087 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1088 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
1089 PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
146174a9
CB
1090 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1091 PTR2UV(cx->blk_oldpm));
760ac839 1092 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 1093 }
6b35e009 1094 switch (CxTYPE(cx)) {
8990e307
LW
1095 case CXt_NULL:
1096 case CXt_BLOCK:
1097 break;
146174a9
CB
1098 case CXt_FORMAT:
1099 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1100 PTR2UV(cx->blk_sub.cv));
1101 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1102 PTR2UV(cx->blk_sub.gv));
1103 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1104 PTR2UV(cx->blk_sub.dfoutgv));
1105 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1106 (int)cx->blk_sub.hasargs);
1107 break;
8990e307 1108 case CXt_SUB:
146174a9
CB
1109 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1110 PTR2UV(cx->blk_sub.cv));
760ac839 1111 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307 1112 (long)cx->blk_sub.olddepth);
760ac839 1113 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
8990e307 1114 (int)cx->blk_sub.hasargs);
146174a9
CB
1115 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1116 (int)cx->blk_sub.lval);
8990e307
LW
1117 break;
1118 case CXt_EVAL:
760ac839 1119 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
8990e307 1120 (long)cx->blk_eval.old_in_eval);
760ac839 1121 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
22c35a8c
GS
1122 PL_op_name[cx->blk_eval.old_op_type],
1123 PL_op_desc[cx->blk_eval.old_op_type]);
0f79a09d
GS
1124 if (cx->blk_eval.old_namesv)
1125 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1126 SvPVX(cx->blk_eval.old_namesv));
146174a9
CB
1127 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1128 PTR2UV(cx->blk_eval.old_eval_root));
8990e307
LW
1129 break;
1130
1131 case CXt_LOOP:
760ac839 1132 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
8990e307 1133 cx->blk_loop.label);
760ac839 1134 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307 1135 (long)cx->blk_loop.resetsp);
146174a9
CB
1136 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1137 PTR2UV(cx->blk_loop.redo_op));
1138 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1139 PTR2UV(cx->blk_loop.next_op));
1140 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1141 PTR2UV(cx->blk_loop.last_op));
760ac839 1142 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
8990e307 1143 (long)cx->blk_loop.iterix);
146174a9
CB
1144 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1145 PTR2UV(cx->blk_loop.iterary));
1146 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1147 PTR2UV(CxITERVAR(cx)));
1148 if (CxITERVAR(cx))
1149 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1150 PTR2UV(cx->blk_loop.itersave));
1151 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1152 PTR2UV(cx->blk_loop.iterlval));
8990e307
LW
1153 break;
1154
1155 case CXt_SUBST:
760ac839 1156 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307 1157 (long)cx->sb_iters);
760ac839 1158 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307 1159 (long)cx->sb_maxiters);
35ef4773
GS
1160 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1161 (long)cx->sb_rflags);
760ac839 1162 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
8990e307 1163 (long)cx->sb_once);
760ac839 1164 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307 1165 cx->sb_orig);
146174a9
CB
1166 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1167 PTR2UV(cx->sb_dstr));
1168 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1169 PTR2UV(cx->sb_targ));
1170 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1171 PTR2UV(cx->sb_s));
1172 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1173 PTR2UV(cx->sb_m));
1174 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1175 PTR2UV(cx->sb_strend));
1176 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1177 PTR2UV(cx->sb_rxres));
8990e307
LW
1178 break;
1179 }
17c3b450 1180#endif /* DEBUGGING */
35ff7856 1181}