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 * Then he heard Merry change the note, and up went the Horn-cry of Buckland,
14 * Awake! Awake! Fear, Fire, Foes! Awake!
29 unset_cvowner(void *cvarg)
31 register CV* cv = (CV *) cvarg;
34 #endif /* DEBUGGING */
36 DEBUG_L((PerlIO_printf(PerlIO_stderr(), "%p unsetting CvOWNER of %p:%s\n",
37 thr, cv, SvPEEK((SV*)cv))));
38 MUTEX_LOCK(CvMUTEXP(cv));
39 DEBUG_L(if (CvDEPTH(cv) != 0)
40 PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n",
42 assert(thr == CvOWNER(cv));
44 MUTEX_UNLOCK(CvMUTEXP(cv));
47 #endif /* USE_THREADS */
59 TAINT_NOT; /* Each statement is presumed innocent */
60 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
69 if (op->op_private & OPpLVAL_INTRO)
70 PUSHs(save_scalar(cGVOP->op_gv));
72 PUSHs(GvSV(cGVOP->op_gv));
93 sv_setpvn(TARG,s,len);
101 XPUSHs((SV*)cGVOP->op_gv);
112 RETURNOP(cLOGOP->op_other);
121 if (op->op_private & OPpASSIGN_BACKWARDS) {
123 temp = left; left = right; right = temp;
125 if (tainting && tainted && !SvTAINTED(left))
127 SvSetMagicSV(right, left);
136 RETURNOP(cCONDOP->op_true);
138 RETURNOP(cCONDOP->op_false);
144 TAINT_NOT; /* Each statement is presumed innocent */
145 stack_sp = stack_base + cxstack[cxstack_ix].blk_oldsp;
147 oldsave = scopestack[scopestack_ix - 1];
148 LEAVE_SCOPE(oldsave);
154 djSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
161 sv_setpvn(TARG,s,len);
163 else if (SvGMAGICAL(TARG))
165 else if (!SvOK(TARG) && SvTYPE(TARG) <= SVt_PVMG) {
166 sv_setpv(TARG, ""); /* Suppress warning. */
167 s = SvPV_force(TARG, len);
171 sv_catpvn(TARG,s,len);
173 sv_setpvn(TARG,s,len); /* suppress warning */
183 if (op->op_flags & OPf_MOD) {
184 if (op->op_private & OPpLVAL_INTRO)
185 SAVECLEARSV(curpad[op->op_targ]);
186 else if (op->op_private & OPpDEREF)
187 vivify_ref(curpad[op->op_targ], op->op_private & OPpDEREF);
194 last_in_gv = (GV*)(*stack_sp--);
195 return do_readline();
200 djSP; tryAMAGICbinSET(eq,0);
203 SETs(boolSV(TOPn == value));
211 if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
213 if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
214 SvIVX(TOPs) != IV_MAX)
217 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
232 RETURNOP(cLOGOP->op_other);
238 djSP; dATARGET; tryAMAGICbin(add,opASSIGN);
241 SETn( left + right );
249 AV *av = GvAV((GV*)cSVOP->op_sv);
250 SV** svp = av_fetch(av, op->op_private, op->op_flags & OPf_MOD);
251 PUSHs(svp ? *svp : &sv_undef);
257 djSP; dMARK; dTARGET;
259 do_join(TARG, *MARK, MARK, SP);
270 * We ass_u_me that LvTARGOFF() comes first, and that two STRLENs
271 * will be enough to hold an OP*.
273 SV* sv = sv_newmortal();
274 sv_upgrade(sv, SVt_PVLV);
276 Copy(&op, &LvTARGOFF(sv), 1, OP*);
284 /* Oversized hot code. */
288 djSP; dMARK; dORIGMARK;
294 if (op->op_flags & OPf_STACKED)
298 if (SvMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) {
299 if (MARK == ORIGMARK) {
302 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
309 perl_call_method("PRINT", G_SCALAR);
317 if (!(io = GvIO(gv))) {
319 SV* sv = sv_newmortal();
320 gv_fullname3(sv, gv, Nullch);
321 warn("Filehandle %s never opened", SvPV(sv,na));
324 SETERRNO(EBADF,RMS$_IFI);
327 else if (!(fp = IoOFP(io))) {
329 SV* sv = sv_newmortal();
330 gv_fullname3(sv, gv, Nullch);
332 warn("Filehandle %s opened only for input", SvPV(sv,na));
334 warn("print on closed filehandle %s", SvPV(sv,na));
336 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
343 if (!do_print(*MARK, fp))
347 if (PerlIO_write(fp, ofs, ofslen) == 0 || PerlIO_error(fp)) {
356 if (!do_print(*MARK, fp))
365 if (PerlIO_write(fp, ors, orslen) == 0 || PerlIO_error(fp))
368 if (IoFLAGS(io) & IOf_FLUSH)
369 if (PerlIO_flush(fp) == EOF)
391 if (SvTYPE(av) != SVt_PVAV)
392 DIE("Not an ARRAY reference");
393 if (op->op_flags & OPf_REF) {
399 if (SvTYPE(sv) == SVt_PVAV) {
401 if (op->op_flags & OPf_REF) {
409 if (SvTYPE(sv) != SVt_PVGV) {
412 if (SvGMAGICAL(sv)) {
418 if (op->op_flags & OPf_REF ||
419 op->op_private & HINT_STRICT_REFS)
420 DIE(no_usym, "an ARRAY");
423 if (GIMME == G_ARRAY)
428 if (op->op_private & HINT_STRICT_REFS)
429 DIE(no_symref, sym, "an ARRAY");
430 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
435 if (op->op_private & OPpLVAL_INTRO)
437 if (op->op_flags & OPf_REF) {
444 if (GIMME == G_ARRAY) {
445 I32 maxarg = AvFILL(av) + 1;
447 Copy(AvARRAY(av), SP+1, maxarg, SV*);
452 I32 maxarg = AvFILL(av) + 1;
466 if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV)
467 DIE("Not a HASH reference");
468 if (op->op_flags & OPf_REF) {
474 if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) {
476 if (op->op_flags & OPf_REF) {
484 if (SvTYPE(sv) != SVt_PVGV) {
487 if (SvGMAGICAL(sv)) {
493 if (op->op_flags & OPf_REF ||
494 op->op_private & HINT_STRICT_REFS)
495 DIE(no_usym, "a HASH");
498 if (GIMME == G_ARRAY) {
505 if (op->op_private & HINT_STRICT_REFS)
506 DIE(no_symref, sym, "a HASH");
507 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
512 if (op->op_private & OPpLVAL_INTRO)
514 if (op->op_flags & OPf_REF) {
521 if (GIMME == G_ARRAY) { /* array wanted */
527 /* This bit is OK even when hv is really an AV */
529 sv_setpvf(TARG, "%ld/%ld",
530 (long)HvFILL(hv), (long)HvMAX(hv) + 1);
542 SV **lastlelem = stack_sp;
543 SV **lastrelem = stack_base + POPMARK;
544 SV **firstrelem = stack_base + POPMARK + 1;
545 SV **firstlelem = lastrelem + 1;
558 delaymagic = DM_DELAY; /* catch simultaneous items */
560 /* If there's a common identifier on both sides we have to take
561 * special care that assigning the identifier on the left doesn't
562 * clobber a value on the right that's used later in the list.
564 if (op->op_private & OPpASSIGN_COMMON) {
565 for (relem = firstrelem; relem <= lastrelem; relem++) {
568 TAINT_NOT; /* Each item is independent */
569 *relem = sv_mortalcopy(sv);
578 while (lelem <= lastlelem) {
579 TAINT_NOT; /* Each item stands on its own, taintwise. */
581 switch (SvTYPE(sv)) {
584 magic = SvMAGICAL(ary) != 0;
587 av_extend(ary, lastrelem - relem);
589 while (relem <= lastrelem) { /* gobble up all the rest */
595 didstore = av_store(ary,i++,sv);
609 magic = SvMAGICAL(hash) != 0;
612 while (relem < lastrelem) { /* gobble up all the rest */
618 sv = &sv_no, relem++;
619 tmpstr = NEWSV(29,0);
621 sv_setsv(tmpstr,*relem); /* value */
623 didstore = hv_store_ent(hash,sv,tmpstr,0);
625 if (SvSMAGICAL(tmpstr))
628 SvREFCNT_dec(tmpstr);
632 if (relem == lastrelem && dowarn)
633 warn("Odd number of elements in hash list");
637 if (SvTHINKFIRST(sv)) {
638 if (SvREADONLY(sv) && curcop != &compiling) {
639 if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
641 if (relem <= lastrelem)
648 if (relem <= lastrelem) {
649 sv_setsv(sv, *relem);
653 sv_setsv(sv, &sv_undef);
658 if (delaymagic & ~DM_DELAY) {
659 if (delaymagic & DM_UID) {
661 (void)setresuid(uid,euid,(Uid_t)-1);
664 (void)setreuid(uid,euid);
667 if ((delaymagic & DM_UID) == DM_RUID) {
669 delaymagic &= ~DM_RUID;
671 # endif /* HAS_SETRUID */
673 if ((delaymagic & DM_UID) == DM_EUID) {
675 delaymagic &= ~DM_EUID;
677 # endif /* HAS_SETEUID */
678 if (delaymagic & DM_UID) {
680 DIE("No setreuid available");
683 # endif /* HAS_SETREUID */
684 #endif /* HAS_SETRESUID */
686 euid = (int)geteuid();
688 if (delaymagic & DM_GID) {
690 (void)setresgid(gid,egid,(Gid_t)-1);
693 (void)setregid(gid,egid);
696 if ((delaymagic & DM_GID) == DM_RGID) {
698 delaymagic &= ~DM_RGID;
700 # endif /* HAS_SETRGID */
702 if ((delaymagic & DM_GID) == DM_EGID) {
704 delaymagic &= ~DM_EGID;
706 # endif /* HAS_SETEGID */
707 if (delaymagic & DM_GID) {
709 DIE("No setregid available");
712 # endif /* HAS_SETREGID */
713 #endif /* HAS_SETRESGID */
715 egid = (int)getegid();
717 tainting |= (uid && (euid != uid || egid != gid));
724 else if (gimme == G_SCALAR) {
727 SETi(lastrelem - firstrelem + 1);
733 SP = firstrelem + (lastlelem - firstlelem);
734 lelem = firstlelem + (relem - firstrelem);
736 *relem++ = (lelem <= lastlelem) ? *lelem++ : &sv_undef;
744 register PMOP *pm = cPMOP;
751 register REGEXP *rx = pm->op_pmregexp;
755 I32 oldsave = savestack_ix;
756 I32 update_minmatch = 1;
758 if (op->op_flags & OPf_STACKED)
767 DIE("panic: do_match");
770 if (pm->op_pmflags & PMf_USED) {
771 if (gimme == G_ARRAY)
776 if (!rx->prelen && curpm) {
778 rx = pm->op_pmregexp;
781 if (global = pm->op_pmflags & PMf_GLOBAL) {
783 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
784 MAGIC* mg = mg_find(TARG, 'g');
785 if (mg && mg->mg_len >= 0) {
786 rx->endp[0] = rx->startp[0] = s + mg->mg_len;
787 minmatch = (mg->mg_flags & MGf_MINMATCH);
792 if (!rx->nparens && !global)
793 gimme = G_SCALAR; /* accidental array context? */
794 safebase = (((gimme == G_ARRAY) || global || !rx->nparens)
796 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
798 multiline = pm->op_pmflags & PMf_MULTILINE;
802 if (global && rx->startp[0]) {
804 if ((s + rx->minlen) > strend)
806 if (update_minmatch++)
807 minmatch = (s == rx->startp[0]);
809 if (pm->op_pmshort) {
810 if (pm->op_pmflags & PMf_SCANFIRST) {
811 if (SvSCREAM(TARG)) {
812 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
814 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
816 else if (pm->op_pmflags & PMf_ALL)
819 else if (!(s = fbm_instr((unsigned char*)s,
820 (unsigned char*)strend, pm->op_pmshort)))
822 else if (pm->op_pmflags & PMf_ALL)
824 if (s && rx->regback >= 0) {
825 ++BmUSEFUL(pm->op_pmshort);
833 else if (!multiline) {
834 if (*SvPVX(pm->op_pmshort) != *s
835 || (pm->op_pmslen > 1
836 && memNE(SvPVX(pm->op_pmshort), s, pm->op_pmslen)))
839 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
840 SvREFCNT_dec(pm->op_pmshort);
841 pm->op_pmshort = Nullsv; /* opt is being useless */
844 if (pregexec(rx, s, strend, truebase, minmatch,
845 SvSCREAM(TARG) ? TARG : Nullsv, safebase))
848 if (pm->op_pmflags & PMf_ONCE)
849 pm->op_pmflags |= PMf_USED;
857 TAINT_IF(rx->exec_tainted);
858 if (gimme == G_ARRAY) {
862 if (global && !iters)
866 EXTEND(SP, iters + i);
867 EXTEND_MORTAL(iters + i);
868 for (i = !i; i <= iters; i++) {
869 PUSHs(sv_newmortal());
871 if ((s = rx->startp[i]) && rx->endp[i] ) {
872 len = rx->endp[i] - s;
873 sv_setpvn(*SP, s, len);
877 truebase = rx->subbeg;
879 if (rx->startp[0] && rx->startp[0] == rx->endp[0])
883 LEAVE_SCOPE(oldsave);
889 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
890 mg = mg_find(TARG, 'g');
892 sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
893 mg = mg_find(TARG, 'g');
896 mg->mg_len = rx->endp[0] - rx->subbeg;
897 if (rx->startp[0] == rx->endp[0])
898 mg->mg_flags |= MGf_MINMATCH;
900 mg->mg_flags &= ~MGf_MINMATCH;
903 LEAVE_SCOPE(oldsave);
908 TAINT_IF(rx->exec_tainted);
909 ++BmUSEFUL(pm->op_pmshort);
911 if (pm->op_pmflags & PMf_ONCE)
912 pm->op_pmflags |= PMf_USED;
913 Safefree(rx->subbase);
914 rx->subbase = Nullch;
916 rx->subbeg = truebase;
919 rx->endp[0] = s + SvCUR(pm->op_pmshort);
925 tmps = rx->subbase = savepvn(t, strend-t);
927 rx->subend = tmps + (strend-t);
928 tmps = rx->startp[0] = tmps + (s - t);
929 rx->endp[0] = tmps + SvCUR(pm->op_pmshort);
931 LEAVE_SCOPE(oldsave);
936 ++BmUSEFUL(pm->op_pmshort);
939 if (global && !(pm->op_pmflags & PMf_CONTINUE)) {
940 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
941 MAGIC* mg = mg_find(TARG, 'g');
946 LEAVE_SCOPE(oldsave);
947 if (gimme == G_ARRAY)
960 register IO *io = GvIO(last_in_gv);
961 register I32 type = op->op_type;
965 if (SvMAGICAL(last_in_gv) && (mg = mg_find((SV*)last_in_gv, 'q'))) {
970 perl_call_method("READLINE", gimme);
973 if (gimme == G_SCALAR)
974 SvSetMagicSV_nosteal(TARG, TOPs);
981 if (IoFLAGS(io) & IOf_ARGV) {
982 if (IoFLAGS(io) & IOf_START) {
983 IoFLAGS(io) &= ~IOf_START;
985 if (av_len(GvAVn(last_in_gv)) < 0) {
986 SV *tmpstr = newSVpv("-", 1); /* assume stdin */
987 av_push(GvAVn(last_in_gv), tmpstr);
990 fp = nextargv(last_in_gv);
991 if (!fp) { /* Note: fp != IoIFP(io) */
992 (void)do_close(last_in_gv, FALSE); /* now it does*/
993 IoFLAGS(io) |= IOf_START;
996 else if (type == OP_GLOB) {
997 SV *tmpcmd = NEWSV(55, 0);
1001 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
1002 /* since spawning off a process is a real performance hit */
1004 #include <descrip.h>
1005 #include <lib$routines.h>
1008 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
1009 char vmsspec[NAM$C_MAXRSS+1];
1010 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
1011 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
1012 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
1015 struct dsc$descriptor_s wilddsc
1016 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
1017 struct dsc$descriptor_vs rsdsc
1018 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
1019 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
1021 /* We could find out if there's an explicit dev/dir or version
1022 by peeking into lib$find_file's internal context at
1023 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
1024 but that's unsupported, so I don't want to do it now and
1025 have it bite someone in the future. */
1026 strcat(tmpfnam,tmpnam(NULL));
1027 cp = SvPV(tmpglob,i);
1029 if (cp[i] == ';') hasver = 1;
1031 if (sts) hasver = 1;
1035 hasdir = isunix = 1;
1038 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
1043 if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
1044 ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
1045 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
1046 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
1047 &dfltdsc,NULL,NULL,NULL))&1)) {
1048 end = rstr + (unsigned long int) *rslt;
1049 if (!hasver) while (*end != ';') end--;
1050 *(end++) = '\n'; *end = '\0';
1051 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
1053 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
1058 while (*(--begin) != ']' && *begin != '>') ;
1061 ok = (PerlIO_puts(tmpfp,begin) != EOF);
1063 if (cxt) (void)lib$find_file_end(&cxt);
1064 if (ok && sts != RMS$_NMF &&
1065 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
1068 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
1070 PerlIO_close(tmpfp);
1074 PerlIO_rewind(tmpfp);
1076 IoIFP(io) = fp = tmpfp;
1077 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
1084 sv_setpv(tmpcmd, "for a in ");
1085 sv_catsv(tmpcmd, tmpglob);
1086 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
1088 sv_setpv(tmpcmd, "perlglob ");
1089 sv_catsv(tmpcmd, tmpglob);
1090 sv_catpv(tmpcmd, " |");
1094 sv_setpvn(tmpcmd, cshname, cshlen);
1095 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
1096 sv_catsv(tmpcmd, tmpglob);
1097 sv_catpv(tmpcmd, "' 2>/dev/null |");
1099 sv_setpv(tmpcmd, "echo ");
1100 sv_catsv(tmpcmd, tmpglob);
1102 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
1104 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
1107 #endif /* !DOSISH */
1108 (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
1109 FALSE, 0, 0, Nullfp);
1115 else if (type == OP_GLOB)
1119 if (dowarn && io && !(IoFLAGS(io) & IOf_START))
1120 warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
1121 if (gimme == G_SCALAR) {
1122 (void)SvOK_off(TARG);
1127 if (gimme == G_SCALAR) {
1131 (void)SvUPGRADE(sv, SVt_PV);
1132 tmplen = SvLEN(sv); /* remember if already alloced */
1134 Sv_Grow(sv, 80); /* try short-buffering it */
1135 if (type == OP_RCATLINE)
1141 sv = sv_2mortal(NEWSV(57, 80));
1145 if (!sv_gets(sv, fp, offset)) {
1146 PerlIO_clearerr(fp);
1147 if (IoFLAGS(io) & IOf_ARGV) {
1148 fp = nextargv(last_in_gv);
1151 (void)do_close(last_in_gv, FALSE);
1152 IoFLAGS(io) |= IOf_START;
1154 else if (type == OP_GLOB) {
1155 if (do_close(last_in_gv, FALSE) & ~0xFF)
1156 warn("internal error: glob failed");
1158 if (gimme == G_SCALAR) {
1159 (void)SvOK_off(TARG);
1164 /* This should not be marked tainted if the fp is marked clean */
1165 if (!(IoFLAGS(io) & IOf_UNTAINT)) {
1172 if (type == OP_GLOB) {
1175 if (SvCUR(sv) > 0 && SvCUR(rs) > 0) {
1176 tmps = SvEND(sv) - 1;
1177 if (*tmps == *SvPVX(rs)) {
1182 for (tmps = SvPVX(sv); *tmps; tmps++)
1183 if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
1184 strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
1186 if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
1187 (void)POPs; /* Unmatched wildcard? Chuck it... */
1191 if (gimme == G_ARRAY) {
1192 if (SvLEN(sv) - SvCUR(sv) > 20) {
1193 SvLEN_set(sv, SvCUR(sv)+1);
1194 Renew(SvPVX(sv), SvLEN(sv), char);
1196 sv = sv_2mortal(NEWSV(58, 80));
1199 else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
1200 /* try to reclaim a bit of scalar space (only on 1st alloc) */
1204 SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
1205 Renew(SvPVX(sv), SvLEN(sv), char);
1214 register CONTEXT *cx;
1215 I32 gimme = OP_GIMME(op, -1);
1218 if (cxstack_ix >= 0)
1219 gimme = cxstack[cxstack_ix].blk_gimme;
1227 PUSHBLOCK(cx, CXt_BLOCK, sp);
1239 U32 lval = op->op_flags & OPf_MOD;
1240 U32 defer = op->op_private & OPpLVAL_DEFER;
1242 if (SvTYPE(hv) == SVt_PVHV) {
1243 he = hv_fetch_ent(hv, keysv, lval && !defer, 0);
1244 svp = he ? &HeVAL(he) : 0;
1246 else if (SvTYPE(hv) == SVt_PVAV) {
1247 svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0);
1253 if (!svp || *svp == &sv_undef) {
1257 DIE(no_helem, SvPV(keysv, na));
1258 lv = sv_newmortal();
1259 sv_upgrade(lv, SVt_PVLV);
1261 sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0);
1262 SvREFCNT_dec(key2); /* sv_magic() increments refcount */
1263 LvTARG(lv) = SvREFCNT_inc(hv);
1268 if (op->op_private & OPpLVAL_INTRO) {
1269 if (HvNAME(hv) && isGV(*svp))
1270 save_gp((GV*)*svp, !(op->op_flags & OPf_SPECIAL));
1274 else if (op->op_private & OPpDEREF)
1275 vivify_ref(*svp, op->op_private & OPpDEREF);
1277 PUSHs(svp ? *svp : &sv_undef);
1284 register CONTEXT *cx;
1290 if (op->op_flags & OPf_SPECIAL) {
1291 cx = &cxstack[cxstack_ix];
1292 cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
1297 gimme = OP_GIMME(op, -1);
1299 if (cxstack_ix >= 0)
1300 gimme = cxstack[cxstack_ix].blk_gimme;
1306 if (gimme == G_VOID)
1308 else if (gimme == G_SCALAR) {
1311 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
1314 *MARK = sv_mortalcopy(TOPs);
1321 else if (gimme == G_ARRAY) {
1322 /* in case LEAVE wipes old return values */
1323 for (mark = newsp + 1; mark <= SP; mark++) {
1324 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
1325 *mark = sv_mortalcopy(*mark);
1326 TAINT_NOT; /* Each item is independent */
1330 curpm = newpm; /* Don't pop $1 et al till now */
1340 register CONTEXT *cx;
1345 cx = &cxstack[cxstack_ix];
1346 if (cx->cx_type != CXt_LOOP)
1347 DIE("panic: pp_iter");
1349 av = cx->blk_loop.iterary;
1350 if (cx->blk_loop.iterix >= (av == curstack ? cx->blk_oldsp : AvFILL(av)))
1353 SvREFCNT_dec(*cx->blk_loop.itervar);
1355 if (sv = AvARRAY(av)[++cx->blk_loop.iterix])
1359 if (av != curstack && SvIMMORTAL(sv)) {
1360 SV *lv = cx->blk_loop.iterlval;
1361 if (lv && SvREFCNT(lv) > 1) {
1366 SvREFCNT_dec(LvTARG(lv));
1368 lv = cx->blk_loop.iterlval = NEWSV(26, 0);
1369 sv_upgrade(lv, SVt_PVLV);
1371 sv_magic(lv, Nullsv, 'y', Nullch, 0);
1373 LvTARG(lv) = SvREFCNT_inc(av);
1374 LvTARGOFF(lv) = cx->blk_loop.iterix;
1375 LvTARGLEN(lv) = (UV) -1;
1379 *cx->blk_loop.itervar = SvREFCNT_inc(sv);
1386 register PMOP *pm = cPMOP;
1402 register REGEXP *rx = pm->op_pmregexp;
1404 int force_on_match = 0;
1405 I32 oldsave = savestack_ix;
1407 /* known replacement string? */
1408 dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv;
1409 if (op->op_flags & OPf_STACKED)
1415 if (SvREADONLY(TARG)
1416 || (SvTYPE(TARG) > SVt_PVLV
1417 && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
1419 s = SvPV(TARG, len);
1420 if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV)
1426 DIE("panic: do_subst");
1429 maxiters = (strend - s) + 10;
1431 if (!rx->prelen && curpm) {
1433 rx = pm->op_pmregexp;
1435 safebase = (!rx->nparens && !sawampersand);
1436 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
1438 multiline = pm->op_pmflags & PMf_MULTILINE;
1441 if (pm->op_pmshort) {
1442 if (pm->op_pmflags & PMf_SCANFIRST) {
1443 if (SvSCREAM(TARG)) {
1444 if (screamfirst[BmRARE(pm->op_pmshort)] < 0)
1446 else if (!(s = screaminstr(TARG, pm->op_pmshort)))
1449 else if (!(s = fbm_instr((unsigned char*)s, (unsigned char*)strend,
1452 if (s && rx->regback >= 0) {
1453 ++BmUSEFUL(pm->op_pmshort);
1461 else if (!multiline) {
1462 if (*SvPVX(pm->op_pmshort) != *s
1463 || (pm->op_pmslen > 1
1464 && memNE(SvPVX(pm->op_pmshort), s, pm->op_pmslen)))
1467 if (!rx->naughty && --BmUSEFUL(pm->op_pmshort) < 0) {
1468 SvREFCNT_dec(pm->op_pmshort);
1469 pm->op_pmshort = Nullsv; /* opt is being useless */
1473 /* only replace once? */
1474 once = !(rpm->op_pmflags & PMf_GLOBAL);
1476 /* known replacement string? */
1477 c = dstr ? SvPV(dstr, clen) : Nullch;
1479 /* can do inplace substitution? */
1480 if (c && clen <= rx->minlen && safebase) {
1481 if (! pregexec(rx, s, strend, orig, 0,
1482 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1484 LEAVE_SCOPE(oldsave);
1487 if (force_on_match) {
1489 s = SvPV_force(TARG, len);
1494 SvSCREAM_off(TARG); /* disable possible screamer */
1496 rxtainted = rx->exec_tainted;
1500 if (m - s > strend - d) { /* faster to shorten from end */
1502 Copy(c, m, clen, char);
1507 Move(d, m, i, char);
1511 SvCUR_set(TARG, m - s);
1514 else if (i = m - s) { /* faster from front */
1522 Copy(c, m, clen, char);
1527 Copy(c, d, clen, char);
1532 TAINT_IF(rxtainted);
1538 if (iters++ > maxiters)
1539 DIE("Substitution loop");
1540 rxtainted |= rx->exec_tainted;
1545 Move(s, d, i, char);
1549 Copy(c, d, clen, char);
1553 } while (pregexec(rx, s, strend, orig, s == m,
1554 Nullsv, TRUE)); /* don't match same null twice */
1557 SvCUR_set(TARG, d - SvPVX(TARG) + i);
1558 Move(s, d, i+1, char); /* include the NUL */
1560 TAINT_IF(rxtainted);
1561 PUSHs(sv_2mortal(newSViv((I32)iters)));
1563 (void)SvPOK_only(TARG);
1566 LEAVE_SCOPE(oldsave);
1570 if (pregexec(rx, s, strend, orig, 0,
1571 SvSCREAM(TARG) ? TARG : Nullsv, safebase)) {
1572 if (force_on_match) {
1574 s = SvPV_force(TARG, len);
1577 rxtainted = rx->exec_tainted;
1578 dstr = NEWSV(25, sv_len(TARG));
1579 sv_setpvn(dstr, m, s-m);
1582 register CONTEXT *cx;
1584 RETURNOP(cPMOP->op_pmreplroot);
1587 if (iters++ > maxiters)
1588 DIE("Substitution loop");
1589 rxtainted |= rx->exec_tainted;
1590 if (rx->subbase && rx->subbase != orig) {
1595 strend = s + (strend - m);
1598 sv_catpvn(dstr, s, m-s);
1601 sv_catpvn(dstr, c, clen);
1604 } while (pregexec(rx, s, strend, orig, s == m, Nullsv, safebase));
1605 sv_catpvn(dstr, s, strend - s);
1607 TAINT_IF(rxtainted);
1609 (void)SvOOK_off(TARG);
1610 Safefree(SvPVX(TARG));
1611 SvPVX(TARG) = SvPVX(dstr);
1612 SvCUR_set(TARG, SvCUR(dstr));
1613 SvLEN_set(TARG, SvLEN(dstr));
1617 (void)SvPOK_only(TARG);
1620 PUSHs(sv_2mortal(newSViv((I32)iters)));
1621 LEAVE_SCOPE(oldsave);
1627 ++BmUSEFUL(pm->op_pmshort);
1631 LEAVE_SCOPE(oldsave);
1640 stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
1642 LEAVE; /* exit inner scope */
1645 if (stack_base + *markstack_ptr > sp) {
1647 I32 gimme = GIMME_V;
1649 LEAVE; /* exit outer scope */
1650 (void)POPMARK; /* pop src */
1651 items = --*markstack_ptr - markstack_ptr[-1];
1652 (void)POPMARK; /* pop dst */
1653 SP = stack_base + POPMARK; /* pop original mark */
1654 if (gimme == G_SCALAR) {
1658 else if (gimme == G_ARRAY)
1665 ENTER; /* enter inner scope */
1668 src = stack_base[*markstack_ptr];
1672 RETURNOP(cLOGOP->op_other);
1683 register CONTEXT *cx;
1684 struct block_sub cxsub;
1687 POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
1690 if (gimme == G_SCALAR) {
1693 *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs);
1700 else if (gimme == G_ARRAY) {
1701 for (MARK = newsp + 1; MARK <= SP; MARK++) {
1702 if (!SvTEMP(*MARK)) {
1703 *MARK = sv_mortalcopy(*MARK);
1704 TAINT_NOT; /* Each item is independent */
1710 POPSUB2(); /* Stack values are safe: release CV and @_ ... */
1711 curpm = newpm; /* ... and pop $1 et al */
1714 return pop_return();
1718 get_db_sub(SV **svp, CV *cv)
1727 if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED))
1728 || strEQ(GvNAME(gv), "END")
1729 || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */
1730 !( (SvTYPE(oldsv) == SVt_PVGV) && (GvCV((GV*)oldsv) == cv)
1731 && (gv = (GV*)oldsv) ))) {
1732 /* Use GV from the stack as a fallback. */
1733 /* GV is potentially non-unique, or contain different CV. */
1734 sv_setsv(*svp, newRV((SV*)cv));
1737 gv_efullname3(*svp, gv, Nullch);
1751 register CONTEXT *cx;
1753 bool hasargs = (op->op_flags & OPf_STACKED) != 0;
1756 DIE("Not a CODE reference");
1757 switch (SvTYPE(sv)) {
1762 if (sv == &sv_yes) { /* unfound import, ignore */
1764 SP = stack_base + POPMARK;
1767 if (SvGMAGICAL(sv)) {
1769 sym = SvPOKp(sv) ? SvPVX(sv) : Nullch;
1774 DIE(no_usym, "a subroutine");
1775 if (op->op_private & HINT_STRICT_REFS)
1776 DIE(no_symref, sym, "a subroutine");
1777 cv = perl_get_cv(sym, TRUE);
1781 if (SvTYPE(cv) == SVt_PVCV)
1786 DIE("Not a CODE reference");
1791 if (!(cv = GvCVu((GV*)sv)))
1792 cv = sv_2cv(sv, &stash, &gv, TRUE);
1801 DIE("Not a CODE reference");
1803 if (!CvROOT(cv) && !CvXSUB(cv)) {
1807 /* anonymous or undef'd function leaves us no recourse */
1808 if (CvANON(cv) || !(gv = CvGV(cv)))
1809 DIE("Undefined subroutine called");
1810 /* autoloaded stub? */
1811 if (cv != GvCV(gv)) {
1815 /* should call AUTOLOAD now? */
1816 if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv),
1823 subname = sv_newmortal();
1824 gv_efullname3(subname, gv, Nullch);
1825 DIE("Undefined subroutine &%s called", SvPVX(subname));
1829 if ((op->op_private & OPpENTERSUB_DB) && GvCV(DBsub) && !CvNODEBUG(cv))
1830 cv = get_db_sub(&sv, cv);
1832 DIE("No DBsub routine");
1836 * First we need to check if the sub or method requires locking.
1837 * If so, we gain a lock on the CV or the first argument, as
1838 * appropriate. This has to be inline because for FAKE_THREADS,
1839 * COND_WAIT inlines code to reschedule by returning a new op.
1841 MUTEX_LOCK(CvMUTEXP(cv));
1842 if (CvFLAGS(cv) & CVf_LOCKED) {
1844 if (CvFLAGS(cv) & CVf_METHOD) {
1845 if (SP > stack_base + TOPMARK)
1846 sv = *(stack_base + TOPMARK + 1);
1848 MUTEX_UNLOCK(CvMUTEXP(cv));
1849 croak("no argument for locked method call");
1857 MUTEX_UNLOCK(CvMUTEXP(cv));
1858 mg = condpair_magic(sv);
1859 MUTEX_LOCK(MgMUTEXP(mg));
1860 if (MgOWNER(mg) == thr)
1861 MUTEX_UNLOCK(MgMUTEXP(mg));
1864 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
1866 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: pp_entersub lock %p\n",
1868 MUTEX_UNLOCK(MgMUTEXP(mg));
1869 SvREFCNT_inc(sv); /* Keep alive until magic_mutexfree */
1870 save_destructor(unlock_condpair, sv);
1872 MUTEX_LOCK(CvMUTEXP(cv));
1875 * Now we have permission to enter the sub, we must distinguish
1876 * four cases. (0) It's an XSUB (in which case we don't care
1877 * about ownership); (1) it's ours already (and we're recursing);
1878 * (2) it's free (but we may already be using a cached clone);
1879 * (3) another thread owns it. Case (1) is easy: we just use it.
1880 * Case (2) means we look for a clone--if we have one, use it
1881 * otherwise grab ownership of cv. Case (3) means we look for a
1882 * clone (for non-XSUBs) and have to create one if we don't
1884 * Why look for a clone in case (2) when we could just grab
1885 * ownership of cv straight away? Well, we could be recursing,
1886 * i.e. we originally tried to enter cv while another thread
1887 * owned it (hence we used a clone) but it has been freed up
1888 * and we're now recursing into it. It may or may not be "better"
1889 * to use the clone but at least CvDEPTH can be trusted.
1891 if (CvOWNER(cv) == thr || CvXSUB(cv))
1892 MUTEX_UNLOCK(CvMUTEXP(cv));
1894 /* Case (2) or (3) */
1898 * XXX Might it be better to release CvMUTEXP(cv) while we
1899 * do the hv_fetch? We might find someone has pinched it
1900 * when we look again, in which case we would be in case
1901 * (3) instead of (2) so we'd have to clone. Would the fact
1902 * that we released the mutex more quickly make up for this?
1904 svp = hv_fetch(cvcache, (char *)cv, sizeof(cv), FALSE);
1906 /* We already have a clone to use */
1907 MUTEX_UNLOCK(CvMUTEXP(cv));
1909 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1910 "entersub: %p already has clone %p:%s\n",
1911 thr, cv, SvPEEK((SV*)cv)));
1914 if (CvDEPTH(cv) == 0)
1915 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1918 /* (2) => grab ownership of cv. (3) => make clone */
1922 MUTEX_UNLOCK(CvMUTEXP(cv));
1923 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1924 "entersub: %p grabbing %p:%s in stash %s\n",
1925 thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ?
1926 HvNAME(CvSTASH(cv)) : "(none)"));
1928 /* Make a new clone. */
1930 SvREFCNT_inc(cv); /* don't let it vanish from under us */
1931 MUTEX_UNLOCK(CvMUTEXP(cv));
1932 DEBUG_L((PerlIO_printf(PerlIO_stderr(),
1933 "entersub: %p cloning %p:%s\n",
1934 thr, cv, SvPEEK((SV*)cv))));
1936 * We're creating a new clone so there's no race
1937 * between the original MUTEX_UNLOCK and the
1938 * SvREFCNT_inc since no one will be trying to undef
1939 * it out from underneath us. At least, I don't think
1942 clonecv = cv_clone(cv);
1943 SvREFCNT_dec(cv); /* finished with this */
1944 hv_store(cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0);
1945 CvOWNER(clonecv) = thr;
1949 DEBUG_L(if (CvDEPTH(cv) != 0)
1950 PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n",
1952 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1955 #endif /* USE_THREADS */
1960 if (CvOLDSTYLE(cv)) {
1961 I32 (*fp3)_((int,int,int));
1963 register I32 items = SP - MARK;
1964 /* We dont worry to copy from @_. */
1969 stack_sp = mark + 1;
1970 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
1971 items = (*fp3)(CvXSUBANY(cv).any_i32,
1972 MARK - stack_base + 1,
1974 stack_sp = stack_base + items;
1977 I32 markix = TOPMARK;
1982 /* Need to copy @_ to stack. Alternative may be to
1983 * switch stack to @_, and copy return values
1984 * back. This would allow popping @_ in XSUB, e.g.. XXXX */
1988 av = (AV*)curpad[0];
1991 #endif /* USE_THREADS */
1992 items = AvFILL(av) + 1;
1995 /* Mark is at the end of the stack. */
1997 Copy(AvARRAY(av), sp + 1, items, SV*);
2002 if (curcopdb) { /* We assume that the first
2003 XSUB in &DB::sub is the
2009 /* Do we need to open block here? XXXX */
2010 (void)(*CvXSUB(cv))(cv);
2012 /* Enforce some sanity in scalar context. */
2013 if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
2014 if (markix > stack_sp - stack_base)
2015 *(stack_base + markix) = &sv_undef;
2017 *(stack_base + markix) = *stack_sp;
2018 stack_sp = stack_base + markix;
2026 register I32 items = SP - MARK;
2027 AV* padlist = CvPADLIST(cv);
2028 SV** svp = AvARRAY(padlist);
2029 push_return(op->op_next);
2030 PUSHBLOCK(cx, CXt_SUB, MARK);
2033 if (CvDEPTH(cv) < 2)
2034 (void)SvREFCNT_inc(cv);
2035 else { /* save temporaries on recursion? */
2036 if (CvDEPTH(cv) == 100 && dowarn
2037 && !(PERLDB_SUB && cv == GvCV(DBsub)))
2038 sub_crush_depth(cv);
2039 if (CvDEPTH(cv) > AvFILL(padlist)) {
2041 AV *newpad = newAV();
2042 SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
2043 I32 ix = AvFILL((AV*)svp[1]);
2044 svp = AvARRAY(svp[0]);
2045 for ( ;ix > 0; ix--) {
2046 if (svp[ix] != &sv_undef) {
2047 char *name = SvPVX(svp[ix]);
2048 if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */
2049 || *name == '&') /* anonymous code? */
2051 av_store(newpad, ix, SvREFCNT_inc(oldpad[ix]));
2053 else { /* our own lexical */
2055 av_store(newpad, ix, sv = (SV*)newAV());
2056 else if (*name == '%')
2057 av_store(newpad, ix, sv = (SV*)newHV());
2059 av_store(newpad, ix, sv = NEWSV(0,0));
2064 av_store(newpad, ix, sv = NEWSV(0,0));
2068 av = newAV(); /* will be @_ */
2070 av_store(newpad, 0, (SV*)av);
2071 AvFLAGS(av) = AVf_REIFY;
2072 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
2073 AvFILL(padlist) = CvDEPTH(cv);
2074 svp = AvARRAY(padlist);
2079 AV* av = (AV*)curpad[0];
2081 items = AvFILL(av) + 1;
2083 /* Mark is at the end of the stack. */
2085 Copy(AvARRAY(av), sp + 1, items, SV*);
2090 #endif /* USE_THREADS */
2092 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
2095 #endif /* USE_THREADS */
2101 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
2102 "%p entersub preparing @_\n", thr));
2104 av = (AV*)curpad[0];
2110 cx->blk_sub.savearray = GvAV(defgv);
2111 GvAV(defgv) = (AV*)SvREFCNT_inc(av);
2112 #endif /* USE_THREADS */
2113 cx->blk_sub.argarray = av;
2116 if (items > AvMAX(av) + 1) {
2118 if (AvARRAY(av) != ary) {
2119 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2120 SvPVX(av) = (char*)ary;
2122 if (items > AvMAX(av) + 1) {
2123 AvMAX(av) = items - 1;
2124 Renew(ary,items,SV*);
2126 SvPVX(av) = (char*)ary;
2129 Copy(MARK,AvARRAY(av),items,SV*);
2130 AvFILL(av) = items - 1;
2139 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
2140 "%p entersub returning %p\n", thr, CvSTART(cv)));
2142 RETURNOP(CvSTART(cv));
2147 sub_crush_depth(CV *cv)
2150 warn("Deep recursion on anonymous subroutine");
2152 SV* tmpstr = sv_newmortal();
2153 gv_efullname3(tmpstr, CvGV(cv), Nullch);
2154 warn("Deep recursion on subroutine \"%s\"", SvPVX(tmpstr));
2164 U32 lval = op->op_flags & OPf_MOD;
2165 U32 defer = (op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av));
2168 elem -= curcop->cop_arybase;
2169 if (SvTYPE(av) != SVt_PVAV)
2171 svp = av_fetch(av, elem, lval && !defer);
2173 if (!svp || *svp == &sv_undef) {
2176 DIE(no_aelem, elem);
2177 lv = sv_newmortal();
2178 sv_upgrade(lv, SVt_PVLV);
2180 sv_magic(lv, Nullsv, 'y', Nullch, 0);
2181 LvTARG(lv) = SvREFCNT_inc(av);
2182 LvTARGOFF(lv) = elem;
2187 if (op->op_private & OPpLVAL_INTRO)
2189 else if (op->op_private & OPpDEREF)
2190 vivify_ref(*svp, op->op_private & OPpDEREF);
2192 PUSHs(svp ? *svp : &sv_undef);
2197 vivify_ref(SV *sv, U32 to_what)
2204 if (SvTYPE(sv) < SVt_RV)
2205 sv_upgrade(sv, SVt_RV);
2206 else if (SvTYPE(sv) >= SVt_PV) {
2207 (void)SvOOK_off(sv);
2208 Safefree(SvPVX(sv));
2209 SvLEN(sv) = SvCUR(sv) = 0;
2213 SvRV(sv) = newSV(0);
2216 SvRV(sv) = (SV*)newAV();
2219 SvRV(sv) = (SV*)newHV();
2240 if (SvTYPE(sv) == SVt_PVCV) {
2246 name = SvPV(TOPs, na);
2247 sv = *(stack_base + TOPMARK + 1);
2258 !(packname = SvPV(sv, packlen)) ||
2259 !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
2260 !(ob=(SV*)GvIO(iogv)))
2262 if (!packname || !isIDFIRST(*packname))
2263 DIE("Can't call method \"%s\" without a package or object reference", name);
2264 stash = gv_stashpvn(packname, packlen, TRUE);
2267 *(stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv));
2270 if (!ob || !SvOBJECT(ob))
2271 DIE("Can't call method \"%s\" on unblessed reference", name);
2273 stash = SvSTASH(ob);
2276 gv = gv_fetchmethod(stash, name);
2282 for (p = name; *p; p++) {
2284 sep = p, leaf = p + 1;
2285 else if (*p == ':' && *(p + 1) == ':')
2286 sep = p, leaf = p + 2;
2288 if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) {
2289 packname = HvNAME(sep ? curcop->cop_stash : stash);
2290 packlen = strlen(packname);
2294 packlen = sep - name;
2296 DIE("Can't locate object method \"%s\" via package \"%.*s\"",
2297 leaf, (int)packlen, packname);
2299 SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv);