3 * Copyright (c) 1991-1997, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "Sam sat on the ground and put his head in his hands. 'I wish I had never
12 * come here, and I don't want to see no more magic,' he said, and fell silent."
18 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
23 #if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
30 # define VTBL this->*vtbl
33 static void restore_magic _((void *p));
34 static int magic_methcall(SV *sv, MAGIC *mg, char *meth, I32 f, int n, SV *val);
38 * Use the "DESTRUCTOR" scope cleanup to reinstate magic.
46 /* MGS is typedef'ed to struct magic_state in perl.h */
49 save_magic(I32 mgs_ix, SV *sv)
53 assert(SvMAGICAL(sv));
55 SAVEDESTRUCTOR(restore_magic, (void*)mgs_ix);
57 mgs = SSPTR(mgs_ix, MGS*);
59 mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
60 mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
64 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
68 restore_magic(void *p)
71 MGS* mgs = SSPTR((I32)p, MGS*);
77 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
80 SvFLAGS(sv) |= mgs->mgs_flags;
84 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
87 mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
89 /* If we're still on top of the stack, pop us off. (That condition
90 * will be satisfied if restore_magic was called explicitly, but *not*
91 * if it's being called via leave_scope.)
92 * The reason for doing this is that otherwise, things like sv_2cv()
93 * may leave alloc gunk on the savestack, and some code
94 * (e.g. sighandler) doesn't expect that...
96 if (PL_savestack_ix == mgs->mgs_ss_ix)
98 I32 popval = SSPOPINT;
99 assert(popval == SAVEt_DESTRUCTOR);
100 PL_savestack_ix -= 2;
102 assert(popval == SAVEt_ALLOC);
104 PL_savestack_ix -= popval;
113 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
114 MGVTBL* vtbl = mg->mg_virtual;
116 if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
120 if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
135 mgs_ix = SSNEW(sizeof(MGS));
136 save_magic(mgs_ix, sv);
139 while ((mg = *mgp) != 0) {
140 MGVTBL* vtbl = mg->mg_virtual;
141 if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
142 (VTBL->svt_get)(sv, mg);
143 /* Ignore this magic if it's been deleted */
144 if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
145 (mg->mg_flags & MGf_GSKIP))
146 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
148 /* Advance to next magic (complicated by possible deletion) */
149 if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
150 mgp = &mg->mg_moremagic;
154 mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
157 restore_magic((void*)mgs_ix);
169 mgs_ix = SSNEW(sizeof(MGS));
170 save_magic(mgs_ix, sv);
172 for (mg = SvMAGIC(sv); mg; mg = nextmg) {
173 MGVTBL* vtbl = mg->mg_virtual;
174 nextmg = mg->mg_moremagic; /* it may delete itself */
175 if (mg->mg_flags & MGf_GSKIP) {
176 mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
177 (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
179 if (vtbl && (vtbl->svt_set != NULL))
180 (VTBL->svt_set)(sv, mg);
183 restore_magic((void*)mgs_ix);
194 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
195 MGVTBL* vtbl = mg->mg_virtual;
196 if (vtbl && (vtbl->svt_len != NULL)) {
199 mgs_ix = SSNEW(sizeof(MGS));
200 save_magic(mgs_ix, sv);
201 /* omit MGf_GSKIP -- not changed here */
202 len = (VTBL->svt_len)(sv, mg);
203 restore_magic((void*)mgs_ix);
208 junk = SvPV(sv, len);
218 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
219 MGVTBL* vtbl = mg->mg_virtual;
220 if (vtbl && (vtbl->svt_len != NULL)) {
223 mgs_ix = SSNEW(sizeof(MGS));
224 save_magic(mgs_ix, sv);
225 /* omit MGf_GSKIP -- not changed here */
226 len = (VTBL->svt_len)(sv, mg);
227 restore_magic((void*)mgs_ix);
234 len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
239 croak("Size magic not implemented");
251 mgs_ix = SSNEW(sizeof(MGS));
252 save_magic(mgs_ix, sv);
254 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
255 MGVTBL* vtbl = mg->mg_virtual;
256 /* omit GSKIP -- never set here */
258 if (vtbl && (vtbl->svt_clear != NULL))
259 (VTBL->svt_clear)(sv, mg);
262 restore_magic((void*)mgs_ix);
267 mg_find(SV *sv, int type)
270 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
271 if (mg->mg_type == type)
278 mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
282 for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
283 if (isUPPER(mg->mg_type)) {
285 mg->mg_type == 'P' ? SvTIED_obj(sv, mg) : mg->mg_obj,
286 toLOWER(mg->mg_type), key, klen);
298 for (mg = SvMAGIC(sv); mg; mg = moremagic) {
299 MGVTBL* vtbl = mg->mg_virtual;
300 moremagic = mg->mg_moremagic;
301 if (vtbl && (vtbl->svt_free != NULL))
302 (VTBL->svt_free)(sv, mg);
303 if (mg->mg_ptr && mg->mg_type != 'g')
305 Safefree(mg->mg_ptr);
306 else if (mg->mg_len == HEf_SVKEY)
307 SvREFCNT_dec((SV*)mg->mg_ptr);
308 if (mg->mg_flags & MGf_REFCOUNTED)
309 SvREFCNT_dec(mg->mg_obj);
316 #if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
321 magic_regdata_cnt(SV *sv, MAGIC *mg)
329 if (PL_curpm && (rx = PL_curpm->op_pmregexp))
330 return rx->lastparen;
335 magic_regdatum_get(SV *sv, MAGIC *mg)
344 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
348 if (paren <= rx->nparens &&
349 (s = rx->startp[paren]) &&
350 (t = rx->endp[paren]))
352 if (mg->mg_obj) /* @+ */
363 magic_len(SV *sv, MAGIC *mg)
372 switch (*mg->mg_ptr) {
373 case '1': case '2': case '3': case '4':
374 case '5': case '6': case '7': case '8': case '9': case '&':
375 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
376 paren = atoi(mg->mg_ptr);
378 if (paren <= rx->nparens &&
379 (s = rx->startp[paren]) &&
380 (t = rx->endp[paren]))
389 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
390 paren = rx->lastparen;
396 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
397 if ((s = rx->subbeg) && rx->startp[0]) {
398 i = rx->startp[0] - s;
405 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
406 if (rx->subend && (s = rx->endp[0])) {
414 return (STRLEN)PL_ofslen;
416 return (STRLEN)PL_orslen;
419 if (!SvPOK(sv) && SvNIOK(sv))
436 static char buffer[50] ;
441 sprintf(buffer, "Buffer %d, Length = %d - ", sv, SvCUR(sv)) ;
443 for (i = 0; i < SvCUR(sv) ; ++ i) {
444 sprintf (buf1, " %x [%x]", (p+i), *(p+i)) ;
445 strcat(buffer, buf1) ;
455 magic_get(SV *sv, MAGIC *mg)
464 switch (*mg->mg_ptr) {
465 case '\001': /* ^A */
466 sv_setsv(sv, PL_bodytarget);
468 case '\002': /* ^B */
469 /* printf("magic_get $^B: ") ; */
470 if (PL_curcop->cop_warnings == WARN_NONE)
471 /* printf("WARN_NONE\n"), */
472 sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
473 else if (PL_curcop->cop_warnings == WARN_ALL)
474 /* printf("WARN_ALL\n"), */
475 sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
477 /* printf("some %s\n", printW(PL_curcop->cop_warnings)), */
478 sv_setsv(sv, PL_curcop->cop_warnings);
480 case '\003': /* ^C */
481 sv_setiv(sv, (IV)PL_minus_c);
484 case '\004': /* ^D */
485 sv_setiv(sv, (IV)(PL_debug & 32767));
487 case '\005': /* ^E */
490 # include <descrip.h>
491 # include <starlet.h>
493 $DESCRIPTOR(msgdsc,msg);
494 sv_setnv(sv,(double) vaxc$errno);
495 if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
496 sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
502 if (!(_emx_env & 0x200)) { /* Under DOS */
503 sv_setnv(sv, (double)errno);
504 sv_setpv(sv, errno ? Strerror(errno) : "");
506 if (errno != errno_isOS2) {
507 int tmp = _syserrno();
508 if (tmp) /* 2nd call to _syserrno() makes it 0 */
511 sv_setnv(sv, (double)Perl_rc);
512 sv_setpv(sv, os2error(Perl_rc));
517 DWORD dwErr = GetLastError();
518 sv_setnv(sv, (double)dwErr);
524 PerlProc_GetSysMsg(sMsg, dwLen, dwErr);
525 sv_setpvn(sv, sMsg, dwLen);
526 PerlProc_FreeBuf(sMsg);
528 win32_str_os_error(sv, dwErr);
536 sv_setnv(sv, (double)errno);
537 sv_setpv(sv, errno ? Strerror(errno) : "");
541 SvNOK_on(sv); /* what a wonderful hack! */
543 case '\006': /* ^F */
544 sv_setiv(sv, (IV)PL_maxsysfd);
546 case '\010': /* ^H */
547 sv_setiv(sv, (IV)PL_hints);
549 case '\011': /* ^I */ /* NOT \t in EBCDIC */
551 sv_setpv(sv, PL_inplace);
553 sv_setsv(sv, &PL_sv_undef);
555 case '\017': /* ^O */
556 sv_setpv(sv, PL_osname);
558 case '\020': /* ^P */
559 sv_setiv(sv, (IV)PL_perldb);
561 case '\023': /* ^S */
564 if (PL_lex_state != LEX_NOTPARSING)
572 case '\024': /* ^T */
574 sv_setnv(sv, PL_basetime);
576 sv_setiv(sv, (IV)PL_basetime);
579 case '\027': /* ^W */
580 sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) == G_WARN_ON));
582 case '1': case '2': case '3': case '4':
583 case '5': case '6': case '7': case '8': case '9': case '&':
584 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
586 * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
587 * XXX Does the new way break anything?
589 paren = atoi(mg->mg_ptr);
591 if (paren <= rx->nparens &&
592 (s = rx->startp[paren]) &&
593 (t = rx->endp[paren]))
600 was_tainted = PL_tainted;
605 PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
610 sv_setsv(sv,&PL_sv_undef);
613 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
614 paren = rx->lastparen;
618 sv_setsv(sv,&PL_sv_undef);
621 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
622 if ((s = rx->subbeg) && rx->startp[0]) {
623 i = rx->startp[0] - s;
627 sv_setsv(sv,&PL_sv_undef);
630 if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
631 if (rx->subend && (s = rx->endp[0])) {
636 sv_setsv(sv,&PL_sv_undef);
640 if (GvIO(PL_last_in_gv)) {
641 sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
647 sv_setiv(sv, (IV)STATUS_CURRENT);
648 #ifdef COMPLEX_STATUS
649 LvTARGOFF(sv) = PL_statusvalue;
650 LvTARGLEN(sv) = PL_statusvalue_vms;
655 s = IoTOP_NAME(GvIOp(PL_defoutgv));
659 sv_setpv(sv,GvENAME(PL_defoutgv));
664 s = IoFMT_NAME(GvIOp(PL_defoutgv));
666 s = GvENAME(PL_defoutgv);
671 sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
674 sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
677 sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
685 WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
688 sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
691 sv_setpvn(sv,PL_ofs,PL_ofslen);
694 sv_setpvn(sv,PL_ors,PL_orslen);
697 sv_setpv(sv,PL_ofmt);
701 sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
702 sv_setpv(sv, errno ? Strerror(errno) : "");
705 int saveerrno = errno;
706 sv_setnv(sv, (double)errno);
708 if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
711 sv_setpv(sv, errno ? Strerror(errno) : "");
715 SvNOK_on(sv); /* what a wonderful hack! */
718 sv_setiv(sv, (IV)PL_uid);
721 sv_setiv(sv, (IV)PL_euid);
724 sv_setiv(sv, (IV)PL_gid);
725 sv_setpvf(sv, "%Vd", (IV)PL_gid);
728 sv_setiv(sv, (IV)PL_egid);
729 sv_setpvf(sv, "%Vd", (IV)PL_egid);
733 Groups_t gary[NGROUPS];
734 i = getgroups(NGROUPS,gary);
736 sv_catpvf(sv, " %Vd", (IV)gary[i]);
739 SvIOK_on(sv); /* what a wonderful hack! */
747 sv_setsv(sv, thr->errsv);
749 #endif /* USE_THREADS */
755 magic_getuvar(SV *sv, MAGIC *mg)
757 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
759 if (uf && uf->uf_val)
760 (*uf->uf_val)(uf->uf_index, sv);
765 magic_setenv(SV *sv, MAGIC *mg)
776 #ifdef DYNAMIC_ENV_FETCH
777 /* We just undefd an environment var. Is a replacement */
778 /* waiting in the wings? */
781 if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
782 s = SvPV(*valp, len);
786 #if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
787 /* And you'll never guess what the dog had */
788 /* in its mouth... */
790 MgTAINTEDDIR_off(mg);
792 if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
793 char pathbuf[256], eltbuf[256], *cp, *elt = s;
797 do { /* DCL$PATH may be a search list */
798 while (1) { /* as may dev portion of any element */
799 if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
800 if ( *(cp+1) == '.' || *(cp+1) == '-' ||
801 cando_by_name(S_IWUSR,0,elt) ) {
806 if ((cp = strchr(elt, ':')) != Nullch)
808 if (my_trnlnm(elt, eltbuf, j++))
814 } while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
817 if (s && klen == 4 && strEQ(ptr,"PATH")) {
818 char *strend = s + len;
823 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
826 if (i >= sizeof tmpbuf /* too long -- assume the worst */
828 || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
835 #endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
841 magic_clearenv(SV *sv, MAGIC *mg)
843 my_setenv(MgPV(mg,PL_na),Nullch);
848 magic_set_all_env(SV *sv, MAGIC *mg)
851 die("Can't make list assignment to %%ENV on this system");
856 magic_clear_all_env(sv,mg);
857 hv_iterinit((HV*)sv);
858 while (entry = hv_iternext((HV*)sv)) {
860 my_setenv(hv_iterkey(entry, &keylen),
861 SvPV(hv_iterval((HV*)sv, entry), PL_na));
869 magic_clear_all_env(SV *sv, MAGIC *mg)
872 die("Can't make list assignment to %%ENV on this system");
875 char *envv = GetEnvironmentStrings();
879 char *end = strchr(cur,'=');
880 if (end && end != cur) {
882 my_setenv(cur,Nullch);
884 cur += strlen(end+1)+1;
886 else if ((len = strlen(cur)))
889 FreeEnvironmentStrings(envv);
893 if (environ == PL_origenviron)
894 New(901, environ, 1, char*);
896 for (i = 0; environ[i]; i++)
897 Safefree(environ[i]);
906 magic_getsig(SV *sv, MAGIC *mg)
909 /* Are we fetching a signal entry? */
910 i = whichsig(MgPV(mg,PL_na));
913 sv_setsv(sv,PL_psig_ptr[i]);
915 Sighandler_t sigstate = rsignal_state(i);
917 /* cache state so we don't fetch it again */
918 if(sigstate == SIG_IGN)
919 sv_setpv(sv,"IGNORE");
921 sv_setsv(sv,&PL_sv_undef);
922 PL_psig_ptr[i] = SvREFCNT_inc(sv);
929 magic_clearsig(SV *sv, MAGIC *mg)
932 /* Are we clearing a signal entry? */
933 i = whichsig(MgPV(mg,PL_na));
936 SvREFCNT_dec(PL_psig_ptr[i]);
939 if(PL_psig_name[i]) {
940 SvREFCNT_dec(PL_psig_name[i]);
948 magic_setsig(SV *sv, MAGIC *mg)
958 if (strEQ(s,"__DIE__"))
960 else if (strEQ(s,"__WARN__"))
962 else if (strEQ(s,"__PARSE__"))
965 croak("No such hook: %s", s);
973 i = whichsig(s); /* ...no, a brick */
975 if (ckWARN(WARN_SIGNAL) || strEQ(s,"ALARM"))
976 warner(WARN_SIGNAL, "No such signal: SIG%s", s);
979 SvREFCNT_dec(PL_psig_name[i]);
980 SvREFCNT_dec(PL_psig_ptr[i]);
981 PL_psig_ptr[i] = SvREFCNT_inc(sv);
982 SvTEMP_off(sv); /* Make sure it doesn't go away on us */
983 PL_psig_name[i] = newSVpvn(s, len);
984 SvREADONLY_on(PL_psig_name[i]);
986 if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
988 (void)rsignal(i, PL_sighandlerp);
990 *svp = SvREFCNT_inc(sv);
993 s = SvPV_force(sv,len);
994 if (strEQ(s,"IGNORE")) {
996 (void)rsignal(i, SIG_IGN);
1000 else if (strEQ(s,"DEFAULT") || !*s) {
1002 (void)rsignal(i, SIG_DFL);
1008 * We should warn if HINT_STRICT_REFS, but without
1009 * access to a known hint bit in a known OP, we can't
1010 * tell whether HINT_STRICT_REFS is in force or not.
1012 if (!strchr(s,':') && !strchr(s,'\''))
1013 sv_insert(sv, 0, 0, "main::", 6);
1015 (void)rsignal(i, PL_sighandlerp);
1017 *svp = SvREFCNT_inc(sv);
1023 magic_setisa(SV *sv, MAGIC *mg)
1025 PL_sub_generation++;
1032 magic_setamagic(SV *sv, MAGIC *mg)
1034 /* HV_badAMAGIC_on(Sv_STASH(sv)); */
1035 PL_amagic_generation++;
1039 #endif /* OVERLOAD */
1042 magic_getnkeys(SV *sv, MAGIC *mg)
1044 HV *hv = (HV*)LvTARG(sv);
1049 (void) hv_iterinit(hv);
1050 if (! SvTIED_mg((SV*)hv, 'P'))
1054 while (entry = hv_iternext(hv)) {
1060 sv_setiv(sv, (IV)i);
1065 magic_setnkeys(SV *sv, MAGIC *mg)
1068 hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
1073 /* caller is responsible for stack switching/cleanup */
1075 magic_methcall(SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
1081 PUSHs(SvTIED_obj(sv, mg));
1084 if (mg->mg_len >= 0)
1085 PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
1086 else if (mg->mg_len == HEf_SVKEY)
1087 PUSHs((SV*)mg->mg_ptr);
1089 else if (mg->mg_type == 'p') {
1090 PUSHs(sv_2mortal(newSViv(mg->mg_len)));
1098 return perl_call_method(meth, flags);
1102 magic_methpack(SV *sv, MAGIC *mg, char *meth)
1108 PUSHSTACKi(PERLSI_MAGIC);
1110 if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
1111 sv_setsv(sv, *PL_stack_sp--);
1121 magic_getpack(SV *sv, MAGIC *mg)
1123 magic_methpack(sv,mg,"FETCH");
1125 mg->mg_flags |= MGf_GSKIP;
1130 magic_setpack(SV *sv, MAGIC *mg)
1134 PUSHSTACKi(PERLSI_MAGIC);
1135 magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
1142 magic_clearpack(SV *sv, MAGIC *mg)
1144 return magic_methpack(sv,mg,"DELETE");
1149 magic_sizepack(SV *sv, MAGIC *mg)
1156 PUSHSTACKi(PERLSI_MAGIC);
1157 if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
1158 sv = *PL_stack_sp--;
1159 retval = (U32) SvIV(sv)-1;
1167 int magic_wipepack(SV *sv, MAGIC *mg)
1172 PUSHSTACKi(PERLSI_MAGIC);
1174 XPUSHs(SvTIED_obj(sv, mg));
1176 perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
1183 magic_nextpack(SV *sv, MAGIC *mg, SV *key)
1186 char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
1190 PUSHSTACKi(PERLSI_MAGIC);
1193 PUSHs(SvTIED_obj(sv, mg));
1198 if (perl_call_method(meth, G_SCALAR))
1199 sv_setsv(key, *PL_stack_sp--);
1208 magic_existspack(SV *sv, MAGIC *mg)
1210 return magic_methpack(sv,mg,"EXISTS");
1214 magic_setdbline(SV *sv, MAGIC *mg)
1224 svp = av_fetch(GvAV(gv),
1225 atoi(MgPV(mg,PL_na)), FALSE);
1226 if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
1229 warn("Can't break at that line\n");
1234 magic_getarylen(SV *sv, MAGIC *mg)
1237 sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
1242 magic_setarylen(SV *sv, MAGIC *mg)
1245 av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
1250 magic_getpos(SV *sv, MAGIC *mg)
1252 SV* lsv = LvTARG(sv);
1254 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
1255 mg = mg_find(lsv, 'g');
1256 if (mg && mg->mg_len >= 0) {
1260 sv_pos_b2u(lsv, &i);
1261 sv_setiv(sv, i + PL_curcop->cop_arybase);
1270 magic_setpos(SV *sv, MAGIC *mg)
1272 SV* lsv = LvTARG(sv);
1280 if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
1281 mg = mg_find(lsv, 'g');
1285 sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
1286 mg = mg_find(lsv, 'g');
1288 else if (!SvOK(sv)) {
1292 len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
1294 pos = SvIV(sv) - PL_curcop->cop_arybase;
1297 ulen = sv_len_utf8(lsv);
1314 sv_pos_u2b(lsv, &p, 0);
1319 mg->mg_flags &= ~MGf_MINMATCH;
1325 magic_getglob(SV *sv, MAGIC *mg)
1327 if (SvFAKE(sv)) { /* FAKE globs can get coerced */
1329 gv_efullname3(sv,((GV*)sv), "*");
1333 gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
1338 magic_setglob(SV *sv, MAGIC *mg)
1345 s = SvPV(sv, PL_na);
1346 if (*s == '*' && s[1])
1348 gv = gv_fetchpv(s,TRUE, SVt_PVGV);
1353 GvGP(sv) = gp_ref(GvGP(gv));
1358 magic_getsubstr(SV *sv, MAGIC *mg)
1361 SV *lsv = LvTARG(sv);
1362 char *tmps = SvPV(lsv,len);
1363 I32 offs = LvTARGOFF(sv);
1364 I32 rem = LvTARGLEN(sv);
1368 if (rem + offs > len)
1370 sv_setpvn(sv, tmps + offs, (STRLEN)rem);
1375 magic_setsubstr(SV *sv, MAGIC *mg)
1378 char *tmps = SvPV(sv,len);
1379 sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
1384 magic_gettaint(SV *sv, MAGIC *mg)
1387 TAINT_IF((mg->mg_len & 1) ||
1388 (mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
1393 magic_settaint(SV *sv, MAGIC *mg)
1396 if (PL_localizing) {
1397 if (PL_localizing == 1)
1402 else if (PL_tainted)
1410 magic_getvec(SV *sv, MAGIC *mg)
1412 SV *lsv = LvTARG(sv);
1414 unsigned long retnum;
1424 s = (unsigned char *) SvPV(lsv, lsvlen);
1425 offset = LvTARGOFF(sv);
1426 size = LvTARGLEN(sv);
1427 len = (offset + size + 7) / 8;
1429 /* Copied from pp_vec() */
1437 if (offset >= lsvlen)
1440 retnum = (unsigned long) s[offset] << 8;
1442 else if (size == 32) {
1443 if (offset >= lsvlen)
1445 else if (offset + 1 >= lsvlen)
1446 retnum = (unsigned long) s[offset] << 24;
1447 else if (offset + 2 >= lsvlen)
1448 retnum = ((unsigned long) s[offset] << 24) +
1449 ((unsigned long) s[offset + 1] << 16);
1451 retnum = ((unsigned long) s[offset] << 24) +
1452 ((unsigned long) s[offset + 1] << 16) +
1453 (s[offset + 2] << 8);
1458 retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
1463 else if (size == 16)
1464 retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
1465 else if (size == 32)
1466 retnum = ((unsigned long) s[offset] << 24) +
1467 ((unsigned long) s[offset + 1] << 16) +
1468 (s[offset + 2] << 8) + s[offset+3];
1471 sv_setuv(sv, (UV)retnum);
1476 magic_setvec(SV *sv, MAGIC *mg)
1478 do_vecset(sv); /* XXX slurp this routine */
1483 magic_getdefelem(SV *sv, MAGIC *mg)
1486 if (LvTARGLEN(sv)) {
1488 SV *ahv = LvTARG(sv);
1489 if (SvTYPE(ahv) == SVt_PVHV) {
1490 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
1495 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
1501 AV* av = (AV*)LvTARG(sv);
1502 if ((I32)LvTARGOFF(sv) <= AvFILL(av))
1503 targ = AvARRAY(av)[LvTARGOFF(sv)];
1505 if (targ && targ != &PL_sv_undef) {
1506 dTHR; /* just for SvREFCNT_dec */
1507 /* somebody else defined it for us */
1508 SvREFCNT_dec(LvTARG(sv));
1509 LvTARG(sv) = SvREFCNT_inc(targ);
1511 SvREFCNT_dec(mg->mg_obj);
1512 mg->mg_obj = Nullsv;
1513 mg->mg_flags &= ~MGf_REFCOUNTED;
1518 sv_setsv(sv, targ ? targ : &PL_sv_undef);
1523 magic_setdefelem(SV *sv, MAGIC *mg)
1528 sv_setsv(LvTARG(sv), sv);
1529 SvSETMAGIC(LvTARG(sv));
1535 vivify_defelem(SV *sv)
1537 dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
1541 if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
1544 SV *ahv = LvTARG(sv);
1545 if (SvTYPE(ahv) == SVt_PVHV) {
1546 HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
1551 SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
1555 if (!value || value == &PL_sv_undef)
1556 croak(PL_no_helem, SvPV(mg->mg_obj, PL_na));
1559 AV* av = (AV*)LvTARG(sv);
1560 if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
1561 LvTARG(sv) = Nullsv; /* array can't be extended */
1563 SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
1564 if (!svp || (value = *svp) == &PL_sv_undef)
1565 croak(PL_no_aelem, (I32)LvTARGOFF(sv));
1568 (void)SvREFCNT_inc(value);
1569 SvREFCNT_dec(LvTARG(sv));
1572 SvREFCNT_dec(mg->mg_obj);
1573 mg->mg_obj = Nullsv;
1574 mg->mg_flags &= ~MGf_REFCOUNTED;
1578 magic_setmglob(SV *sv, MAGIC *mg)
1586 magic_setbm(SV *sv, MAGIC *mg)
1588 sv_unmagic(sv, 'B');
1594 magic_setfm(SV *sv, MAGIC *mg)
1596 sv_unmagic(sv, 'f');
1602 magic_setuvar(SV *sv, MAGIC *mg)
1604 struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
1606 if (uf && uf->uf_set)
1607 (*uf->uf_set)(uf->uf_index, sv);
1612 magic_freeregexp(SV *sv, MAGIC *mg)
1614 regexp *re = (regexp *)mg->mg_obj;
1619 #ifdef USE_LOCALE_COLLATE
1621 magic_setcollxfrm(SV *sv, MAGIC *mg)
1624 * RenE<eacute> Descartes said "I think not."
1625 * and vanished with a faint plop.
1628 Safefree(mg->mg_ptr);
1634 #endif /* USE_LOCALE_COLLATE */
1637 magic_set(SV *sv, MAGIC *mg)
1643 switch (*mg->mg_ptr) {
1644 case '\001': /* ^A */
1645 sv_setsv(PL_bodytarget, sv);
1647 case '\002': /* ^B */
1648 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1649 if (memEQ(SvPVX(sv), WARN_ALLstring, WARNsize))
1650 PL_compiling.cop_warnings = WARN_ALL;
1651 else if (memEQ(SvPVX(sv), WARN_NONEstring, WARNsize))
1652 PL_compiling.cop_warnings = WARN_NONE;
1654 if (PL_compiling.cop_warnings != WARN_NONE &&
1655 PL_compiling.cop_warnings != WARN_ALL)
1656 sv_setsv(PL_compiling.cop_warnings, sv);
1658 PL_compiling.cop_warnings = newSVsv(sv) ;
1663 case '\003': /* ^C */
1664 PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1667 case '\004': /* ^D */
1668 PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
1669 DEBUG_x(dump_all());
1671 case '\005': /* ^E */
1673 set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1676 SetLastError( SvIV(sv) );
1678 /* will anyone ever use this? */
1679 SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
1683 case '\006': /* ^F */
1684 PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1686 case '\010': /* ^H */
1687 PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1689 case '\011': /* ^I */ /* NOT \t in EBCDIC */
1691 Safefree(PL_inplace);
1693 PL_inplace = savepv(SvPV(sv,PL_na));
1695 PL_inplace = Nullch;
1697 case '\017': /* ^O */
1699 Safefree(PL_osname);
1701 PL_osname = savepv(SvPV(sv,PL_na));
1705 case '\020': /* ^P */
1706 PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1708 case '\024': /* ^T */
1710 PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
1712 PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1715 case '\027': /* ^W */
1716 if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
1717 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1718 PL_dowarn = (i ? G_WARN_ON : G_WARN_OFF) ;
1722 if (PL_localizing) {
1723 if (PL_localizing == 1)
1724 save_sptr((SV**)&PL_last_in_gv);
1726 else if (SvOK(sv) && GvIO(PL_last_in_gv))
1727 IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
1730 Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
1731 IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
1732 IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1735 Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
1736 IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
1737 IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
1740 IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1743 IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1744 if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
1745 IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
1748 IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1752 IO *io = GvIOp(PL_defoutgv);
1753 if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
1754 IoFLAGS(io) &= ~IOf_FLUSH;
1756 if (!(IoFLAGS(io) & IOf_FLUSH)) {
1757 PerlIO *ofp = IoOFP(io);
1759 (void)PerlIO_flush(ofp);
1760 IoFLAGS(io) |= IOf_FLUSH;
1766 i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1767 PL_multiline = (i != 0);
1770 SvREFCNT_dec(PL_nrs);
1771 PL_nrs = newSVsv(sv);
1772 SvREFCNT_dec(PL_rs);
1773 PL_rs = SvREFCNT_inc(PL_nrs);
1778 if (SvOK(sv) || SvGMAGICAL(sv))
1779 PL_ors = savepv(SvPV(sv,PL_orslen));
1788 PL_ofs = savepv(SvPV(sv, PL_ofslen));
1793 PL_ofmt = savepv(SvPV(sv,PL_na));
1796 PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1799 #ifdef COMPLEX_STATUS
1800 if (PL_localizing == 2) {
1801 PL_statusvalue = LvTARGOFF(sv);
1802 PL_statusvalue_vms = LvTARGLEN(sv);
1806 #ifdef VMSISH_STATUS
1808 STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
1811 STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
1814 SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
1815 (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
1818 PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1819 if (PL_delaymagic) {
1820 PL_delaymagic |= DM_RUID;
1821 break; /* don't do magic till later */
1824 (void)setruid((Uid_t)PL_uid);
1827 (void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
1829 #ifdef HAS_SETRESUID
1830 (void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
1832 if (PL_uid == PL_euid) /* special case $< = $> */
1833 (void)PerlProc_setuid(PL_uid);
1835 PL_uid = (I32)PerlProc_getuid();
1836 croak("setruid() not implemented");
1841 PL_uid = (I32)PerlProc_getuid();
1842 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1845 PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1846 if (PL_delaymagic) {
1847 PL_delaymagic |= DM_EUID;
1848 break; /* don't do magic till later */
1851 (void)seteuid((Uid_t)PL_euid);
1854 (void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
1856 #ifdef HAS_SETRESUID
1857 (void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
1859 if (PL_euid == PL_uid) /* special case $> = $< */
1860 PerlProc_setuid(PL_euid);
1862 PL_euid = (I32)PerlProc_geteuid();
1863 croak("seteuid() not implemented");
1868 PL_euid = (I32)PerlProc_geteuid();
1869 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1872 PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1873 if (PL_delaymagic) {
1874 PL_delaymagic |= DM_RGID;
1875 break; /* don't do magic till later */
1878 (void)setrgid((Gid_t)PL_gid);
1881 (void)setregid((Gid_t)PL_gid, (Gid_t)-1);
1883 #ifdef HAS_SETRESGID
1884 (void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
1886 if (PL_gid == PL_egid) /* special case $( = $) */
1887 (void)PerlProc_setgid(PL_gid);
1889 PL_gid = (I32)PerlProc_getgid();
1890 croak("setrgid() not implemented");
1895 PL_gid = (I32)PerlProc_getgid();
1896 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1899 #ifdef HAS_SETGROUPS
1901 char *p = SvPV(sv, PL_na);
1902 Groups_t gary[NGROUPS];
1904 SET_NUMERIC_STANDARD();
1907 PL_egid = I_V(atof(p));
1908 for (i = 0; i < NGROUPS; ++i) {
1909 while (*p && !isSPACE(*p))
1915 gary[i] = I_V(atof(p));
1918 (void)setgroups(i, gary);
1920 #else /* HAS_SETGROUPS */
1921 PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
1922 #endif /* HAS_SETGROUPS */
1923 if (PL_delaymagic) {
1924 PL_delaymagic |= DM_EGID;
1925 break; /* don't do magic till later */
1928 (void)setegid((Gid_t)PL_egid);
1931 (void)setregid((Gid_t)-1, (Gid_t)PL_egid);
1933 #ifdef HAS_SETRESGID
1934 (void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
1936 if (PL_egid == PL_gid) /* special case $) = $( */
1937 (void)PerlProc_setgid(PL_egid);
1939 PL_egid = (I32)PerlProc_getegid();
1940 croak("setegid() not implemented");
1945 PL_egid = (I32)PerlProc_getegid();
1946 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
1949 PL_chopset = SvPV_force(sv,PL_na);
1955 /* See if all the arguments are contiguous in memory */
1956 for (i = 1; i < PL_origargc; i++) {
1957 if (PL_origargv[i] == s + 1
1959 || PL_origargv[i] == s + 2
1964 s += strlen(s); /* this one is ok too */
1969 /* can grab env area too? */
1970 if (PL_origenviron && (PL_origenviron[0] == s + 1
1972 || (PL_origenviron[0] == s + 9 && (s += 8))
1975 my_setenv("NoNe SuCh", Nullch);
1976 /* force copy of environment */
1977 for (i = 0; PL_origenviron[i]; i++)
1978 if (PL_origenviron[i] == s + 1) {
1985 PL_origalen = s - PL_origargv[0];
1987 s = SvPV_force(sv,len);
1989 if (i >= PL_origalen) {
1991 /* don't allow system to limit $0 seen by script */
1992 /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
1993 Copy(s, PL_origargv[0], i, char);
1994 s = PL_origargv[0]+i;
1998 Copy(s, PL_origargv[0], i, char);
1999 s = PL_origargv[0]+i;
2001 while (++i < PL_origalen)
2003 s = PL_origargv[0]+i;
2004 for (i = 1; i < PL_origargc; i++)
2005 PL_origargv[i] = Nullch;
2010 sv_setsv(thr->errsv, sv);
2012 #endif /* USE_THREADS */
2019 magic_mutexfree(SV *sv, MAGIC *mg)
2022 DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
2023 (unsigned long)thr, (unsigned long)sv);)
2025 croak("panic: magic_mutexfree");
2026 MUTEX_DESTROY(MgMUTEXP(mg));
2027 COND_DESTROY(MgCONDP(mg));
2030 #endif /* USE_THREADS */
2035 register char **sigv;
2037 for (sigv = PL_sig_name+1; *sigv; sigv++)
2038 if (strEQ(sig,*sigv))
2039 return PL_sig_num[sigv - PL_sig_name];
2041 if (strEQ(sig,"CHLD"))
2045 if (strEQ(sig,"CLD"))
2054 unwind_handler_stack(void *p)
2057 U32 flags = *(U32*)p;
2060 PL_savestack_ix -= 5; /* Unprotect save in progress. */
2061 /* cxstack_ix-- Not needed, die already unwound it. */
2063 SvREFCNT_dec(sig_sv);
2072 SV *sv, *tSv = PL_Sv;
2076 I32 o_save_i = PL_savestack_ix, type;
2079 if (PL_savestack_ix + 15 <= PL_savestack_max)
2081 if (PL_markstack_ptr < PL_markstack_max - 2)
2083 if (PL_retstack_ix < PL_retstack_max - 2)
2085 if (PL_scopestack_ix < PL_scopestack_max - 3)
2088 if (!PL_psig_ptr[sig])
2089 die("Signal SIG%s received, but no signal handler set.\n",
2092 /* Max number of items pushed there is 3*n or 4. We cannot fix
2093 infinity, so we fix 4 (in fact 5): */
2095 PL_savestack_ix += 5; /* Protect save in progress. */
2096 o_save_i = PL_savestack_ix;
2097 SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
2100 PL_markstack_ptr++; /* Protect mark. */
2103 PL_retstack[PL_retstack_ix] = NULL;
2106 PL_scopestack_ix += 1;
2107 /* sv_2cv is too complicated, try a simpler variant first: */
2108 if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
2109 || SvTYPE(cv) != SVt_PVCV)
2110 cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
2112 if (!cv || !CvROOT(cv)) {
2113 if (ckWARN(WARN_SIGNAL))
2114 warner(WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
2115 PL_sig_name[sig], (gv ? GvENAME(gv)
2122 if(PL_psig_name[sig]) {
2123 sv = SvREFCNT_inc(PL_psig_name[sig]);
2127 sv = sv_newmortal();
2128 sv_setpv(sv,PL_sig_name[sig]);
2131 PUSHSTACKi(PERLSI_SIGNAL);
2136 perl_call_sv((SV*)cv, G_DISCARD);
2141 PL_savestack_ix -= 8; /* Unprotect save in progress. */
2147 PL_scopestack_ix -= 1;
2150 PL_op = myop; /* Apparently not needed... */
2152 PL_Sv = tSv; /* Restore global temporaries. */