3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
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.
12 * "For the fashion of Minas Tirith was such that it was built on seven
16 /* This file contains functions to manipulate several of Perl's stacks;
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
24 #define PERL_IN_SCOPE_C
28 Perl_stack_grow(pTHX_ SV **sp, SV **p, int n)
31 #ifndef STRESS_REALLOC
32 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128);
34 av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1);
39 #ifndef STRESS_REALLOC
40 #define GROW(old) ((old) * 3 / 2)
42 #define GROW(old) ((old) + 1)
46 Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems)
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);
53 AvALLOC(si->si_stack)[0] = &PL_sv_undef;
54 AvFILLp(si->si_stack) = 0;
57 si->si_cxmax = cxitems - 1;
59 si->si_type = PERLSI_UNDEF;
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);
70 IV old_max = cxstack_max;
71 cxstack_max = GROW(cxstack_max);
72 Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */
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);
76 return cxstack_ix + 1;
82 if (PL_scopestack_ix == PL_scopestack_max) {
83 PL_scopestack_max = GROW(PL_scopestack_max);
84 Renew(PL_scopestack, PL_scopestack_max, I32);
86 PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix;
93 const I32 oldsave = PL_scopestack[--PL_scopestack_ix];
98 Perl_markstack_grow(pTHX)
100 const I32 oldmax = PL_markstack_max - PL_markstack;
101 const I32 newmax = GROW(oldmax);
103 Renew(PL_markstack, newmax, I32);
104 PL_markstack_ptr = PL_markstack + oldmax;
105 PL_markstack_max = PL_markstack + newmax;
109 Perl_savestack_grow(pTHX)
111 PL_savestack_max = GROW(PL_savestack_max) + 4;
112 Renew(PL_savestack, PL_savestack_max, ANY);
116 Perl_savestack_grow_cnt(pTHX_ I32 need)
118 PL_savestack_max = PL_savestack_ix + need;
119 Renew(PL_savestack, PL_savestack_max, ANY);
125 Perl_tmps_grow(pTHX_ I32 n)
127 #ifndef STRESS_REALLOC
129 n = (PL_tmps_max < 512) ? 128 : 512;
131 PL_tmps_max = PL_tmps_ix + n + 1;
132 Renew(PL_tmps_stack, PL_tmps_max, SV*);
139 /* XXX should tmps_floor live in cxstack? */
140 const I32 myfloor = PL_tmps_floor;
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;
144 if (sv && sv != &PL_sv_undef) {
146 SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
152 S_save_scalar_at(pTHX_ SV **sptr)
157 sv = *sptr = NEWSV(0,0);
158 if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
160 sv_upgrade(sv, SvTYPE(osv));
161 if (SvGMAGICAL(osv)) {
162 const bool oldtainted = PL_tainted;
163 mg_get(osv); /* note, can croak! */
164 if (PL_tainting && PL_tainted &&
165 (mg = mg_find(osv, PERL_MAGIC_taint))) {
166 SAVESPTR(mg->mg_obj);
169 SvFLAGS(osv) |= (SvFLAGS(osv) &
170 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
171 PL_tainted = oldtainted;
173 SvMAGIC(sv) = SvMAGIC(osv);
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) {
177 if (mg->mg_type == '\0'
178 || !(mg->mg_virtual && mg->mg_virtual->svt_set))
180 SvFLAGS(sv) |= SvREADONLY(osv);
184 SvFLAGS(sv) |= SvMAGICAL(osv);
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. */
196 Perl_save_scalar(pTHX_ GV *gv)
198 SV **sptr = &GvSV(gv);
200 SSPUSHPTR(SvREFCNT_inc(gv));
201 SSPUSHPTR(SvREFCNT_inc(*sptr));
203 return save_scalar_at(sptr);
207 Perl_save_svref(pTHX_ SV **sptr)
211 SSPUSHPTR(SvREFCNT_inc(*sptr));
212 SSPUSHINT(SAVEt_SVREF);
213 return save_scalar_at(sptr);
216 /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to
217 * restore a global SV to its prior contents, freeing new value. */
219 Perl_save_generic_svref(pTHX_ SV **sptr)
223 SSPUSHPTR(SvREFCNT_inc(*sptr));
224 SSPUSHINT(SAVEt_GENERIC_SVREF);
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. */
231 Perl_save_generic_pvref(pTHX_ char **str)
236 SSPUSHINT(SAVEt_GENERIC_PVREF);
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. */
243 Perl_save_shared_pvref(pTHX_ char **str)
248 SSPUSHINT(SAVEt_SHARED_PVREF);
251 /* set the SvFLAGS specified by mask to the values in val */
254 Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
260 SSPUSHINT(SAVEt_SET_SVFLAGS);
264 Perl_save_gp(pTHX_ GV *gv, I32 empty)
267 SSPUSHIV((IV)SvLEN(gv));
268 SvLEN(gv) = 0; /* forget that anything was allocated here */
269 SSPUSHIV((IV)SvCUR(gv));
270 SSPUSHPTR(SvPVX(gv));
272 SSPUSHPTR(SvREFCNT_inc(gv));
279 Newz(602, gp, 1, GP);
282 PL_sub_generation++; /* taking a method out of circulation */
283 if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) {
285 IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START;
287 GvGP(gv) = gp_ref(gp);
288 GvSV(gv) = NEWSV(72,0);
289 GvLINE(gv) = CopLINE(PL_curcop);
290 GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : "";
300 Perl_save_ary(pTHX_ GV *gv)
305 if (!AvREAL(oav) && AvREIFY(oav))
312 GvAV(gv) = Null(AV*);
315 SvMAGIC(av) = SvMAGIC(oav);
316 SvFLAGS((SV*)av) |= SvMAGICAL(oav);
327 Perl_save_hash(pTHX_ GV *gv)
333 SSPUSHPTR(ohv = GvHVn(gv));
336 GvHV(gv) = Null(HV*);
339 SvMAGIC(hv) = SvMAGIC(ohv);
340 SvFLAGS((SV*)hv) |= SvMAGICAL(ohv);
351 Perl_save_item(pTHX_ register SV *item)
353 register SV *sv = newSVsv(item);
356 SSPUSHPTR(item); /* remember the pointer */
357 SSPUSHPTR(sv); /* remember the value */
358 SSPUSHINT(SAVEt_ITEM);
362 Perl_save_int(pTHX_ int *intp)
367 SSPUSHINT(SAVEt_INT);
371 Perl_save_long(pTHX_ long int *longp)
376 SSPUSHINT(SAVEt_LONG);
380 Perl_save_bool(pTHX_ bool *boolp)
385 SSPUSHINT(SAVEt_BOOL);
389 Perl_save_I32(pTHX_ I32 *intp)
394 SSPUSHINT(SAVEt_I32);
398 Perl_save_I16(pTHX_ I16 *intp)
403 SSPUSHINT(SAVEt_I16);
407 Perl_save_I8(pTHX_ I8 *bytep)
416 Perl_save_iv(pTHX_ IV *ivp)
424 /* Cannot use save_sptr() to store a char* since the SV** cast will
425 * force word-alignment and we'll miss the pointer.
428 Perl_save_pptr(pTHX_ char **pptr)
433 SSPUSHINT(SAVEt_PPTR);
437 Perl_save_vptr(pTHX_ void *ptr)
440 SSPUSHPTR(*(char**)ptr);
442 SSPUSHINT(SAVEt_VPTR);
446 Perl_save_sptr(pTHX_ SV **sptr)
451 SSPUSHINT(SAVEt_SPTR);
455 Perl_save_padsv(pTHX_ PADOFFSET off)
458 ASSERT_CURPAD_ACTIVE("save_padsv");
459 SSPUSHPTR(PL_curpad[off]);
460 SSPUSHPTR(PL_comppad);
461 SSPUSHLONG((long)off);
462 SSPUSHINT(SAVEt_PADSV);
466 Perl_save_threadsv(pTHX_ PADOFFSET i)
468 Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl");
471 /* No __attribute__, so the compiler doesn't know that croak never returns
478 Perl_save_nogv(pTHX_ GV *gv)
482 SSPUSHINT(SAVEt_NSTAB);
486 Perl_save_hptr(pTHX_ HV **hptr)
491 SSPUSHINT(SAVEt_HPTR);
495 Perl_save_aptr(pTHX_ AV **aptr)
500 SSPUSHINT(SAVEt_APTR);
504 Perl_save_freesv(pTHX_ SV *sv)
508 SSPUSHINT(SAVEt_FREESV);
512 Perl_save_mortalizesv(pTHX_ SV *sv)
516 SSPUSHINT(SAVEt_MORTALIZESV);
520 Perl_save_freeop(pTHX_ OP *o)
524 SSPUSHINT(SAVEt_FREEOP);
528 Perl_save_freepv(pTHX_ char *pv)
532 SSPUSHINT(SAVEt_FREEPV);
536 Perl_save_clearsv(pTHX_ SV **svp)
538 ASSERT_CURPAD_ACTIVE("save_clearsv");
540 SSPUSHLONG((long)(svp-PL_curpad));
541 SSPUSHINT(SAVEt_CLEARSV);
542 SvPADSTALE_off(*svp); /* mark lexical as active */
546 Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen)
551 SSPUSHPTR(SvREFCNT_inc(hv));
552 SSPUSHINT(SAVEt_DELETE);
556 Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg)
561 for (i = 1; i <= maxsarg; i++) {
563 sv_setsv(sv,sarg[i]);
565 SSPUSHPTR(sarg[i]); /* remember the pointer */
566 SSPUSHPTR(sv); /* remember the value */
567 SSPUSHINT(SAVEt_ITEM);
572 Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p)
577 SSPUSHINT(SAVEt_DESTRUCTOR);
581 Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p)
586 SSPUSHINT(SAVEt_DESTRUCTOR_X);
590 Perl_save_aelem(pTHX_ const AV *av, I32 idx, SV **sptr)
594 SSPUSHPTR(SvREFCNT_inc(av));
596 SSPUSHPTR(SvREFCNT_inc(*sptr));
597 SSPUSHINT(SAVEt_AELEM);
598 /* if it gets reified later, the restore will have the wrong refcnt */
599 if (!AvREAL(av) && AvREIFY(av))
600 (void)SvREFCNT_inc(*sptr);
601 save_scalar_at(sptr);
603 /* If we're localizing a tied array element, this new sv
604 * won't actually be stored in the array - so it won't get
605 * reaped when the localize ends. Ensure it gets reaped by
606 * mortifying it instead. DAPM */
607 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
612 Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr)
616 SSPUSHPTR(SvREFCNT_inc(hv));
617 SSPUSHPTR(SvREFCNT_inc(key));
618 SSPUSHPTR(SvREFCNT_inc(*sptr));
619 SSPUSHINT(SAVEt_HELEM);
620 save_scalar_at(sptr);
622 /* If we're localizing a tied hash element, this new sv
623 * won't actually be stored in the hash - so it won't get
624 * reaped when the localize ends. Ensure it gets reaped by
625 * mortifying it instead. DAPM */
626 if (SvTIED_mg(sv, PERL_MAGIC_tiedelem))
639 Perl_save_alloc(pTHX_ I32 size, I32 pad)
641 register const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix]
642 - (char*)PL_savestack);
643 register const I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack));
645 /* SSCHECK may not be good enough */
646 while (PL_savestack_ix + elems + 2 > PL_savestack_max)
649 PL_savestack_ix += elems;
651 SSPUSHINT(SAVEt_ALLOC);
656 Perl_leave_scope(pTHX_ I32 base)
668 Perl_croak(aTHX_ "panic: corrupt saved stack index");
669 while (PL_savestack_ix > base) {
671 case SAVEt_ITEM: /* normal string */
672 value = (SV*)SSPOPPTR;
674 sv_replace(sv,value);
679 case SAVEt_SV: /* scalar reference */
680 value = (SV*)SSPOPPTR;
683 av = (AV*)gv; /* what to refcnt_dec */
685 case SAVEt_GENERIC_PVREF: /* generic pv */
686 str = (char*)SSPOPPTR;
688 if (*(char**)ptr != str) {
689 Safefree(*(char**)ptr);
693 case SAVEt_SHARED_PVREF: /* shared pv */
694 str = (char*)SSPOPPTR;
696 if (*(char**)ptr != str) {
698 PerlMem_free(*(char**)ptr);
700 PerlMemShared_free(*(char**)ptr);
705 case SAVEt_GENERIC_SVREF: /* generic sv */
706 value = (SV*)SSPOPPTR;
713 case SAVEt_SVREF: /* scalar reference */
714 value = (SV*)SSPOPPTR;
716 av = Nullav; /* what to refcnt_dec */
719 DEBUG_S(PerlIO_printf(Perl_debug_log,
720 "restore svref: %p %p:%s -> %p:%s\n",
721 ptr, sv, SvPEEK(sv), value, SvPEEK(value)));
722 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
723 SvTYPE(sv) != SVt_PVGV)
725 (void)SvUPGRADE(value, SvTYPE(sv));
726 SvMAGIC(value) = SvMAGIC(sv);
727 SvFLAGS(value) |= SvMAGICAL(sv);
731 /* XXX This branch is pretty bogus. This code irretrievably
732 * clears(!) the magic on the SV (either to avoid further
733 * croaking that might ensue when the SvSETMAGIC() below is
734 * called, or to avoid two different SVs pointing at the same
735 * SvMAGIC()). This needs a total rethink. --GSAR */
736 else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
737 SvTYPE(value) != SVt_PVGV)
739 SvFLAGS(value) |= (SvFLAGS(value) &
740 (SVp_NOK|SVp_POK)) >> PRIVSHIFT;
741 SvMAGICAL_off(value);
742 /* XXX this is a leak when we get here because the
743 * mg_get() in save_scalar_at() croaked */
752 if (av) /* actually an av, hv or gv */
755 case SAVEt_AV: /* array reference */
759 AV * const goner = GvAV(gv);
760 SvMAGIC(av) = SvMAGIC(goner);
761 SvFLAGS((SV*)av) |= SvMAGICAL(goner);
762 SvMAGICAL_off(goner);
773 case SAVEt_HV: /* hash reference */
777 HV * const goner = GvHV(gv);
778 SvMAGIC(hv) = SvMAGIC(goner);
779 SvFLAGS(hv) |= SvMAGICAL(goner);
780 SvMAGICAL_off(goner);
791 case SAVEt_INT: /* int reference */
793 *(int*)ptr = (int)SSPOPINT;
795 case SAVEt_LONG: /* long reference */
797 *(long*)ptr = (long)SSPOPLONG;
799 case SAVEt_BOOL: /* bool reference */
801 *(bool*)ptr = (bool)SSPOPBOOL;
803 case SAVEt_I32: /* I32 reference */
805 *(I32*)ptr = (I32)SSPOPINT;
807 case SAVEt_I16: /* I16 reference */
809 *(I16*)ptr = (I16)SSPOPINT;
811 case SAVEt_I8: /* I8 reference */
813 *(I8*)ptr = (I8)SSPOPINT;
815 case SAVEt_IV: /* IV reference */
817 *(IV*)ptr = (IV)SSPOPIV;
819 case SAVEt_SPTR: /* SV* reference */
821 *(SV**)ptr = (SV*)SSPOPPTR;
823 case SAVEt_VPTR: /* random* reference */
824 case SAVEt_PPTR: /* char* reference */
826 *(char**)ptr = (char*)SSPOPPTR;
828 case SAVEt_HPTR: /* HV* reference */
830 *(HV**)ptr = (HV*)SSPOPPTR;
832 case SAVEt_APTR: /* AV* reference */
834 *(AV**)ptr = (AV*)SSPOPPTR;
838 (void)sv_clear((SV*)gv);
840 case SAVEt_GP: /* scalar reference */
843 if (SvPVX(gv) && SvLEN(gv) > 0) {
846 SvPVX(gv) = (char *)SSPOPPTR;
847 SvCUR(gv) = (STRLEN)SSPOPIV;
848 SvLEN(gv) = (STRLEN)SSPOPIV;
852 PL_sub_generation++; /* putting a method back into circulation */
857 SvREFCNT_dec((SV*)ptr);
859 case SAVEt_MORTALIZESV:
861 sv_2mortal((SV*)ptr);
865 ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */
870 Safefree((char*)ptr);
873 ptr = (void*)&PL_curpad[SSPOPLONG];
876 DEBUG_Xv(PerlIO_printf(Perl_debug_log,
877 "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n",
878 PTR2UV(PL_comppad), PTR2UV(PL_curpad),
879 (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv),
880 (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon"
883 /* Can clear pad variable in place? */
884 if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) {
886 * if a my variable that was made readonly is going out of
887 * scope, we want to remove the readonlyness so that it can
888 * go out of scope quietly
890 if (SvPADMY(sv) && !SvFAKE(sv))
893 if (SvTHINKFIRST(sv))
894 sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF);
898 switch (SvTYPE(sv)) {
908 Perl_croak(aTHX_ "panic: leave_scope pad code");
913 SvPADSTALE_on(sv); /* mark as no longer live */
915 else { /* Someone has a claim on this, so abandon it. */
916 const U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP);
917 switch (SvTYPE(sv)) { /* Console ourselves with a new value */
918 case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break;
919 case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break;
920 default: *(SV**)ptr = NEWSV(0,0); break;
922 SvREFCNT_dec(sv); /* Cast current value to the winds. */
923 /* preserve pad nature, but also mark as not live
924 * for any closure capturing */
925 SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
932 (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
936 case SAVEt_DESTRUCTOR:
940 case SAVEt_DESTRUCTOR_X:
942 (*SSPOPDXPTR)(aTHX_ ptr);
944 case SAVEt_REGCONTEXT:
947 PL_savestack_ix -= i; /* regexp must have croaked */
949 case SAVEt_STACK_POS: /* Position on Perl stack */
951 PL_stack_sp = PL_stack_base + i;
953 case SAVEt_AELEM: /* array element */
954 value = (SV*)SSPOPPTR;
957 if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
959 ptr = av_fetch(av,i,1);
962 if (sv && sv != &PL_sv_undef) {
963 if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
964 (void)SvREFCNT_inc(sv);
971 case SAVEt_HELEM: /* hash element */
972 value = (SV*)SSPOPPTR;
975 ptr = hv_fetch_ent(hv, sv, 1, 0);
977 const SV * const oval = HeVAL((HE*)ptr);
978 if (oval && oval != &PL_sv_undef) {
979 ptr = &HeVAL((HE*)ptr);
980 if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
981 (void)SvREFCNT_inc(*(SV**)ptr);
983 av = (AV*)hv; /* what to refcnt_dec */
992 PL_op = (OP*)SSPOPPTR;
995 if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) {
996 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
997 GvHV(PL_hintgv) = NULL;
999 *(I32*)&PL_hints = (I32)SSPOPINT;
1000 if (PL_hints & HINT_LOCALIZE_HH) {
1001 SvREFCNT_dec((SV*)GvHV(PL_hintgv));
1002 GvHV(PL_hintgv) = (HV*)SSPOPPTR;
1007 PL_comppad = (PAD*)SSPOPPTR;
1009 PL_curpad = AvARRAY(PL_comppad);
1011 PL_curpad = Null(SV**);
1015 const PADOFFSET off = (PADOFFSET)SSPOPLONG;
1018 AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
1021 case SAVEt_SAVESWITCHSTACK:
1024 AV* t = (AV*)SSPOPPTR;
1025 AV* f = (AV*)SSPOPPTR;
1027 PL_curstackinfo->si_stack = f;
1030 case SAVEt_SET_SVFLAGS:
1032 const U32 val = (U32)SSPOPINT;
1033 const U32 mask = (U32)SSPOPINT;
1035 SvFLAGS(sv) &= ~mask;
1040 Perl_croak(aTHX_ "panic: leave_scope inconsistency");
1046 Perl_cx_dump(pTHX_ PERL_CONTEXT *cx)
1049 PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]);
1050 if (CxTYPE(cx) != CXt_SUBST) {
1051 PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
1052 PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n",
1053 PTR2UV(cx->blk_oldcop));
1054 PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
1055 PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
1056 PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n",
1057 PTR2UV(cx->blk_oldpm));
1058 PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
1060 switch (CxTYPE(cx)) {
1065 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1066 PTR2UV(cx->blk_sub.cv));
1067 PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n",
1068 PTR2UV(cx->blk_sub.gv));
1069 PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n",
1070 PTR2UV(cx->blk_sub.dfoutgv));
1071 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1072 (int)cx->blk_sub.hasargs);
1073 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1074 PTR2UV(cx->blk_sub.retop));
1077 PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n",
1078 PTR2UV(cx->blk_sub.cv));
1079 PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
1080 (long)cx->blk_sub.olddepth);
1081 PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
1082 (int)cx->blk_sub.hasargs);
1083 PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n",
1084 (int)cx->blk_sub.lval);
1085 PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%"UVxf"\n",
1086 PTR2UV(cx->blk_sub.retop));
1089 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
1090 (long)cx->blk_eval.old_in_eval);
1091 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
1092 PL_op_name[cx->blk_eval.old_op_type],
1093 PL_op_desc[cx->blk_eval.old_op_type]);
1094 if (cx->blk_eval.old_namesv)
1095 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
1096 SvPVX(cx->blk_eval.old_namesv));
1097 PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n",
1098 PTR2UV(cx->blk_eval.old_eval_root));
1099 PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%"UVxf"\n",
1100 PTR2UV(cx->blk_eval.retop));
1104 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
1105 cx->blk_loop.label);
1106 PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
1107 (long)cx->blk_loop.resetsp);
1108 PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n",
1109 PTR2UV(cx->blk_loop.redo_op));
1110 PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n",
1111 PTR2UV(cx->blk_loop.next_op));
1112 PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n",
1113 PTR2UV(cx->blk_loop.last_op));
1114 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
1115 (long)cx->blk_loop.iterix);
1116 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n",
1117 PTR2UV(cx->blk_loop.iterary));
1118 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n",
1119 PTR2UV(CxITERVAR(cx)));
1121 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n",
1122 PTR2UV(cx->blk_loop.itersave));
1123 PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n",
1124 PTR2UV(cx->blk_loop.iterlval));
1128 PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
1129 (long)cx->sb_iters);
1130 PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
1131 (long)cx->sb_maxiters);
1132 PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n",
1133 (long)cx->sb_rflags);
1134 PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
1136 PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
1138 PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n",
1139 PTR2UV(cx->sb_dstr));
1140 PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n",
1141 PTR2UV(cx->sb_targ));
1142 PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n",
1144 PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n",
1146 PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n",
1147 PTR2UV(cx->sb_strend));
1148 PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n",
1149 PTR2UV(cx->sb_rxres));
1152 #endif /* DEBUGGING */
1157 * c-indentation-style: bsd
1159 * indent-tabs-mode: t
1162 * vim: shiftwidth=4: