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 (SvRMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) {
299 if (MARK == ORIGMARK) {
300 /* If using default handle then we need to make space to
301 * pass object as 1st arg, so move other args up ...
305 Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
312 perl_call_method("PRINT", G_SCALAR);
320 if (!(io = GvIO(gv))) {
322 SV* sv = sv_newmortal();
323 gv_fullname3(sv, gv, Nullch);
324 warn("Filehandle %s never opened", SvPV(sv,na));
327 SETERRNO(EBADF,RMS$_IFI);
330 else if (!(fp = IoOFP(io))) {
332 SV* sv = sv_newmortal();
333 gv_fullname3(sv, gv, Nullch);
335 warn("Filehandle %s opened only for input", SvPV(sv,na));
337 warn("print on closed filehandle %s", SvPV(sv,na));
339 SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
346 if (!do_print(*MARK, fp))
350 if (PerlIO_write(fp, ofs, ofslen) == 0 || PerlIO_error(fp)) {
359 if (!do_print(*MARK, fp))
368 if (PerlIO_write(fp, ors, orslen) == 0 || PerlIO_error(fp))
371 if (IoFLAGS(io) & IOf_FLUSH)
372 if (PerlIO_flush(fp) == EOF)
394 if (SvTYPE(av) != SVt_PVAV)
395 DIE("Not an ARRAY reference");
396 if (op->op_flags & OPf_REF) {
402 if (SvTYPE(sv) == SVt_PVAV) {
404 if (op->op_flags & OPf_REF) {
412 if (SvTYPE(sv) != SVt_PVGV) {
415 if (SvGMAGICAL(sv)) {
421 if (op->op_flags & OPf_REF ||
422 op->op_private & HINT_STRICT_REFS)
423 DIE(no_usym, "an ARRAY");
426 if (GIMME == G_ARRAY)
431 if (op->op_private & HINT_STRICT_REFS)
432 DIE(no_symref, sym, "an ARRAY");
433 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
438 if (op->op_private & OPpLVAL_INTRO)
440 if (op->op_flags & OPf_REF) {
447 if (GIMME == G_ARRAY) {
448 I32 maxarg = AvFILL(av) + 1;
450 if (SvRMAGICAL(av)) {
452 for (i=0; i < maxarg; i++) {
453 SV **svp = av_fetch(av, i, FALSE);
454 SP[i+1] = (svp) ? *svp : &sv_undef;
458 Copy(AvARRAY(av), SP+1, maxarg, SV*);
464 I32 maxarg = AvFILL(av) + 1;
478 if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV)
479 DIE("Not a HASH reference");
480 if (op->op_flags & OPf_REF) {
486 if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) {
488 if (op->op_flags & OPf_REF) {
496 if (SvTYPE(sv) != SVt_PVGV) {
499 if (SvGMAGICAL(sv)) {
505 if (op->op_flags & OPf_REF ||
506 op->op_private & HINT_STRICT_REFS)
507 DIE(no_usym, "a HASH");
510 if (GIMME == G_ARRAY) {
517 if (op->op_private & HINT_STRICT_REFS)
518 DIE(no_symref, sym, "a HASH");
519 gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
524 if (op->op_private & OPpLVAL_INTRO)
526 if (op->op_flags & OPf_REF) {
533 if (GIMME == G_ARRAY) { /* array wanted */
539 /* This bit is OK even when hv is really an AV */
541 sv_setpvf(TARG, "%ld/%ld",
542 (long)HvFILL(hv), (long)HvMAX(hv) + 1);
554 SV **lastlelem = stack_sp;
555 SV **lastrelem = stack_base + POPMARK;
556 SV **firstrelem = stack_base + POPMARK + 1;
557 SV **firstlelem = lastrelem + 1;
570 delaymagic = DM_DELAY; /* catch simultaneous items */
572 /* If there's a common identifier on both sides we have to take
573 * special care that assigning the identifier on the left doesn't
574 * clobber a value on the right that's used later in the list.
576 if (op->op_private & OPpASSIGN_COMMON) {
577 for (relem = firstrelem; relem <= lastrelem; relem++) {
580 TAINT_NOT; /* Each item is independent */
581 *relem = sv_mortalcopy(sv);
590 while (lelem <= lastlelem) {
591 TAINT_NOT; /* Each item stands on its own, taintwise. */
593 switch (SvTYPE(sv)) {
596 magic = SvMAGICAL(ary) != 0;
599 av_extend(ary, lastrelem - relem);
601 while (relem <= lastrelem) { /* gobble up all the rest */
607 didstore = av_store(ary,i++,sv);
621 magic = SvMAGICAL(hash) != 0;
624 while (relem < lastrelem) { /* gobble up all the rest */
630 sv = &sv_no, relem++;
631 tmpstr = NEWSV(29,0);
633 sv_setsv(tmpstr,*relem); /* value */
635 didstore = hv_store_ent(hash,sv,tmpstr,0);
637 if (SvSMAGICAL(tmpstr))
640 SvREFCNT_dec(tmpstr);
644 if (relem == lastrelem && dowarn)
645 warn("Odd number of elements in hash list");
649 if (SvTHINKFIRST(sv)) {
650 if (SvREADONLY(sv) && curcop != &compiling) {
651 if (sv != &sv_undef && sv != &sv_yes && sv != &sv_no)
653 if (relem <= lastrelem)
660 if (relem <= lastrelem) {
661 sv_setsv(sv, *relem);
665 sv_setsv(sv, &sv_undef);
670 if (delaymagic & ~DM_DELAY) {
671 if (delaymagic & DM_UID) {
673 (void)setresuid(uid,euid,(Uid_t)-1);
676 (void)setreuid(uid,euid);
679 if ((delaymagic & DM_UID) == DM_RUID) {
681 delaymagic &= ~DM_RUID;
683 # endif /* HAS_SETRUID */
685 if ((delaymagic & DM_UID) == DM_EUID) {
687 delaymagic &= ~DM_EUID;
689 # endif /* HAS_SETEUID */
690 if (delaymagic & DM_UID) {
692 DIE("No setreuid available");
695 # endif /* HAS_SETREUID */
696 #endif /* HAS_SETRESUID */
698 euid = (int)geteuid();
700 if (delaymagic & DM_GID) {
702 (void)setresgid(gid,egid,(Gid_t)-1);
705 (void)setregid(gid,egid);
708 if ((delaymagic & DM_GID) == DM_RGID) {
710 delaymagic &= ~DM_RGID;
712 # endif /* HAS_SETRGID */
714 if ((delaymagic & DM_GID) == DM_EGID) {
716 delaymagic &= ~DM_EGID;
718 # endif /* HAS_SETEGID */
719 if (delaymagic & DM_GID) {
721 DIE("No setregid available");
724 # endif /* HAS_SETREGID */
725 #endif /* HAS_SETRESGID */
727 egid = (int)getegid();
729 tainting |= (uid && (euid != uid || egid != gid));
736 else if (gimme == G_SCALAR) {
739 SETi(lastrelem - firstrelem + 1);
745 SP = firstrelem + (lastlelem - firstlelem);
746 lelem = firstlelem + (relem - firstrelem);
748 *relem++ = (lelem <= lastlelem) ? *lelem++ : &sv_undef;
756 register PMOP *pm = cPMOP;
763 register REGEXP *rx = pm->op_pmregexp;
767 I32 oldsave = savestack_ix;
768 I32 update_minmatch = 1;
771 if (op->op_flags & OPf_STACKED)
777 PUTBACK; /* EVAL blocks need stack_sp. */
781 DIE("panic: do_match");
784 if (pm->op_pmflags & PMf_USED) {
786 if (gimme == G_ARRAY)
791 if (!rx->prelen && curpm) {
793 rx = pm->op_pmregexp;
795 if (rx->minlen > len) goto failure;
797 screamer = ( (SvSCREAM(TARG) && rx->check_substr
798 && SvTYPE(rx->check_substr) == SVt_PVBM
799 && SvVALID(rx->check_substr))
802 if (global = pm->op_pmflags & PMf_GLOBAL) {
804 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
805 MAGIC* mg = mg_find(TARG, 'g');
806 if (mg && mg->mg_len >= 0) {
807 rx->endp[0] = rx->startp[0] = s + mg->mg_len;
808 minmatch = (mg->mg_flags & MGf_MINMATCH);
813 if (!rx->nparens && !global)
814 gimme = G_SCALAR; /* accidental array context? */
815 safebase = (((gimme == G_ARRAY) || global || !rx->nparens)
817 safebase = safebase ? 0 : REXEC_COPY_STR ;
818 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
820 multiline = pm->op_pmflags & PMf_MULTILINE;
824 if (global && rx->startp[0]) {
826 if ((s + rx->minlen) > strend)
828 if (update_minmatch++)
829 minmatch = (s == rx->startp[0]);
831 if (rx->check_substr) {
832 if (!(rx->reganch & ROPT_NOSCAN)) { /* Floating checkstring. */
836 if (screamfirst[BmRARE(rx->check_substr)] < 0)
838 else if (!(s = screaminstr(TARG, rx->check_substr,
839 rx->check_offset_min, 0, &p, 0)))
841 else if ((rx->reganch & ROPT_CHECK_ALL)
842 && !sawampersand && !SvTAIL(rx->check_substr))
845 else if (!(s = fbm_instr((unsigned char*)s + rx->check_offset_min,
846 (unsigned char*)strend,
849 else if ((rx->reganch & ROPT_CHECK_ALL) && !sawampersand)
851 if (s && rx->check_offset_max < t - s) {
852 ++BmUSEFUL(rx->check_substr);
853 s -= rx->check_offset_max;
858 /* Now checkstring is fixed, i.e. at fixed offset from the
859 beginning of match, and the match is anchored at s. */
860 else if (!multiline) { /* Anchored near beginning of string. */
862 if (*SvPVX(rx->check_substr) != s[rx->check_offset_min]
863 || ((slen = SvCUR(rx->check_substr)) > 1
864 && memNE(SvPVX(rx->check_substr),
865 s + rx->check_offset_min, slen)))
868 if (!rx->naughty && --BmUSEFUL(rx->check_substr) < 0
869 && rx->check_substr == rx->float_substr) {
870 SvREFCNT_dec(rx->check_substr);
871 rx->check_substr = Nullsv; /* opt is being useless */
872 rx->float_substr = Nullsv;
875 if (regexec_flags(rx, s, strend, truebase, minmatch,
876 screamer, NULL, safebase))
879 if (pm->op_pmflags & PMf_ONCE)
880 pm->op_pmflags |= PMf_USED;
888 TAINT_IF(RX_MATCH_TAINTED(rx));
889 if (gimme == G_ARRAY) {
893 if (global && !iters)
897 SPAGAIN; /* EVAL blocks could move the stack. */
898 EXTEND(SP, iters + i);
899 EXTEND_MORTAL(iters + i);
900 for (i = !i; i <= iters; i++) {
901 PUSHs(sv_newmortal());
903 if ((s = rx->startp[i]) && rx->endp[i] ) {
904 len = rx->endp[i] - s;
905 sv_setpvn(*SP, s, len);
909 truebase = rx->subbeg;
911 if (rx->startp[0] && rx->startp[0] == rx->endp[0])
913 PUTBACK; /* EVAL blocks may use stack */
916 LEAVE_SCOPE(oldsave);
922 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG))
923 mg = mg_find(TARG, 'g');
925 sv_magic(TARG, (SV*)0, 'g', Nullch, 0);
926 mg = mg_find(TARG, 'g');
929 mg->mg_len = rx->endp[0] - rx->subbeg;
930 if (rx->startp[0] == rx->endp[0])
931 mg->mg_flags |= MGf_MINMATCH;
933 mg->mg_flags &= ~MGf_MINMATCH;
936 LEAVE_SCOPE(oldsave);
940 yup: /* Confirmed by check_substr */
941 TAINT_IF(RX_MATCH_TAINTED(rx));
942 ++BmUSEFUL(rx->check_substr);
944 if (pm->op_pmflags & PMf_ONCE)
945 pm->op_pmflags |= PMf_USED;
946 Safefree(rx->subbase);
947 rx->subbase = Nullch;
949 rx->subbeg = truebase;
952 rx->endp[0] = s + SvCUR(rx->check_substr);
958 tmps = rx->subbase = savepvn(t, strend-t);
960 rx->subend = tmps + (strend-t);
961 tmps = rx->startp[0] = tmps + (s - t);
962 rx->endp[0] = tmps + SvCUR(rx->check_substr);
964 LEAVE_SCOPE(oldsave);
968 if (rx->check_substr)
969 ++BmUSEFUL(rx->check_substr);
972 if (global && !(pm->op_pmflags & PMf_CONTINUE)) {
973 if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) {
974 MAGIC* mg = mg_find(TARG, 'g');
979 LEAVE_SCOPE(oldsave);
980 if (gimme == G_ARRAY)
993 register IO *io = GvIO(last_in_gv);
994 register I32 type = op->op_type;
998 if (SvRMAGICAL(last_in_gv) && (mg = mg_find((SV*)last_in_gv, 'q'))) {
1003 perl_call_method("READLINE", gimme);
1006 if (gimme == G_SCALAR)
1007 SvSetMagicSV_nosteal(TARG, TOPs);
1014 if (IoFLAGS(io) & IOf_ARGV) {
1015 if (IoFLAGS(io) & IOf_START) {
1016 IoFLAGS(io) &= ~IOf_START;
1018 if (av_len(GvAVn(last_in_gv)) < 0) {
1019 SV *tmpstr = newSVpv("-", 1); /* assume stdin */
1020 av_push(GvAVn(last_in_gv), tmpstr);
1023 fp = nextargv(last_in_gv);
1024 if (!fp) { /* Note: fp != IoIFP(io) */
1025 (void)do_close(last_in_gv, FALSE); /* now it does*/
1026 IoFLAGS(io) |= IOf_START;
1029 else if (type == OP_GLOB) {
1030 SV *tmpcmd = NEWSV(55, 0);
1034 #ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
1035 /* since spawning off a process is a real performance hit */
1037 #include <descrip.h>
1038 #include <lib$routines.h>
1041 char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
1042 char vmsspec[NAM$C_MAXRSS+1];
1043 char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
1044 char tmpfnam[L_tmpnam] = "SYS$SCRATCH:";
1045 $DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
1048 struct dsc$descriptor_s wilddsc
1049 = {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
1050 struct dsc$descriptor_vs rsdsc
1051 = {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
1052 unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
1054 /* We could find out if there's an explicit dev/dir or version
1055 by peeking into lib$find_file's internal context at
1056 ((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
1057 but that's unsupported, so I don't want to do it now and
1058 have it bite someone in the future. */
1059 strcat(tmpfnam,tmpnam(NULL));
1060 cp = SvPV(tmpglob,i);
1062 if (cp[i] == ';') hasver = 1;
1064 if (sts) hasver = 1;
1068 hasdir = isunix = 1;
1071 if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
1076 if ((tmpfp = PerlIO_open(tmpfnam,"w+","fop=dlt")) != NULL) {
1077 ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
1078 if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
1079 while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
1080 &dfltdsc,NULL,NULL,NULL))&1)) {
1081 end = rstr + (unsigned long int) *rslt;
1082 if (!hasver) while (*end != ';') end--;
1083 *(end++) = '\n'; *end = '\0';
1084 for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
1086 if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
1091 while (*(--begin) != ']' && *begin != '>') ;
1094 ok = (PerlIO_puts(tmpfp,begin) != EOF);
1096 if (cxt) (void)lib$find_file_end(&cxt);
1097 if (ok && sts != RMS$_NMF &&
1098 sts != RMS$_DNF && sts != RMS$_FNF) ok = 0;
1101 SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
1103 PerlIO_close(tmpfp);
1107 PerlIO_rewind(tmpfp);
1109 IoIFP(io) = fp = tmpfp;
1110 IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
1117 sv_setpv(tmpcmd, "for a in ");
1118 sv_catsv(tmpcmd, tmpglob);
1119 sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
1122 sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
1123 sv_catsv(tmpcmd, tmpglob);
1125 sv_setpv(tmpcmd, "perlglob ");
1126 sv_catsv(tmpcmd, tmpglob);
1127 sv_catpv(tmpcmd, " |");
1132 sv_setpvn(tmpcmd, cshname, cshlen);
1133 sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
1134 sv_catsv(tmpcmd, tmpglob);
1135 sv_catpv(tmpcmd, "' 2>/dev/null |");
1137 sv_setpv(tmpcmd, "echo ");
1138 sv_catsv(tmpcmd, tmpglob);
1140 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
1142 sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
1145 #endif /* !DOSISH */
1146 (void)do_open(last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
1147 FALSE, 0, 0, Nullfp);
1153 else if (type == OP_GLOB)
1157 if (dowarn && io && !(IoFLAGS(io) & IOf_START))
1158 warn("Read on closed filehandle <%s>", GvENAME(last_in_gv));
1159 if (gimme == G_SCALAR) {
1160 (void)SvOK_off(TARG);
1165 if (gimme == G_SCALAR) {
1169 (void)SvUPGRADE(sv, SVt_PV);
1170 tmplen = SvLEN(sv); /* remember if already alloced */
1172 Sv_Grow(sv, 80); /* try short-buffering it */
1173 if (type == OP_RCATLINE)
1179 sv = sv_2mortal(NEWSV(57, 80));
1183 if (!sv_gets(sv, fp, offset)) {
1184 PerlIO_clearerr(fp);
1185 if (IoFLAGS(io) & IOf_ARGV) {
1186 fp = nextargv(last_in_gv);
1189 (void)do_close(last_in_gv, FALSE);
1190 IoFLAGS(io) |= IOf_START;
1192 else if (type == OP_GLOB) {
1193 if (do_close(last_in_gv, FALSE) & ~0xFF)
1194 warn("internal error: glob failed");
1196 if (gimme == G_SCALAR) {
1197 (void)SvOK_off(TARG);
1202 /* This should not be marked tainted if the fp is marked clean */
1203 if (!(IoFLAGS(io) & IOf_UNTAINT)) {
1210 if (type == OP_GLOB) {
1213 if (SvCUR(sv) > 0 && SvCUR(rs) > 0) {
1214 tmps = SvEND(sv) - 1;
1215 if (*tmps == *SvPVX(rs)) {
1220 for (tmps = SvPVX(sv); *tmps; tmps++)
1221 if (!isALPHA(*tmps) && !isDIGIT(*tmps) &&
1222 strchr("$&*(){}[]'\";\\|?<>~`", *tmps))
1224 if (*tmps && Stat(SvPVX(sv), &statbuf) < 0) {
1225 (void)POPs; /* Unmatched wildcard? Chuck it... */
1229 if (gimme == G_ARRAY) {
1230 if (SvLEN(sv) - SvCUR(sv) > 20) {
1231 SvLEN_set(sv, SvCUR(sv)+1);
1232 Renew(SvPVX(sv), SvLEN(sv), char);
1234 sv = sv_2mortal(NEWSV(58, 80));
1237 else if (gimme == G_SCALAR && !tmplen && SvLEN(sv) - SvCUR(sv) > 80) {
1238 /* try to reclaim a bit of scalar space (only on 1st alloc) */
1242 SvLEN_set(sv, SvCUR(sv)+40); /* allow some slop */
1243 Renew(SvPVX(sv), SvLEN(sv), char);
1252 register PERL_CONTEXT *cx;
1253 I32 gimme = OP_GIMME(op, -1);
1256 if (cxstack_ix >= 0)
1257 gimme = cxstack[cxstack_ix].blk_gimme;
1265 PUSHBLOCK(cx, CXt_BLOCK, sp);
1277 U32 lval = op->op_flags & OPf_MOD;
1278 U32 defer = op->op_private & OPpLVAL_DEFER;
1280 if (SvTYPE(hv) == SVt_PVHV) {
1281 he = hv_fetch_ent(hv, keysv, lval && !defer, 0);
1282 svp = he ? &HeVAL(he) : 0;
1284 else if (SvTYPE(hv) == SVt_PVAV) {
1285 svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0);
1291 if (!svp || *svp == &sv_undef) {
1295 DIE(no_helem, SvPV(keysv, na));
1296 lv = sv_newmortal();
1297 sv_upgrade(lv, SVt_PVLV);
1299 sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0);
1300 SvREFCNT_dec(key2); /* sv_magic() increments refcount */
1301 LvTARG(lv) = SvREFCNT_inc(hv);
1306 if (op->op_private & OPpLVAL_INTRO) {
1307 if (HvNAME(hv) && isGV(*svp))
1308 save_gp((GV*)*svp, !(op->op_flags & OPf_SPECIAL));
1312 else if (op->op_private & OPpDEREF)
1313 vivify_ref(*svp, op->op_private & OPpDEREF);
1315 PUSHs(svp ? *svp : &sv_undef);
1322 register PERL_CONTEXT *cx;
1328 if (op->op_flags & OPf_SPECIAL) {
1329 cx = &cxstack[cxstack_ix];
1330 cx->blk_oldpm = curpm; /* fake block should preserve $1 et al */
1335 gimme = OP_GIMME(op, -1);
1337 if (cxstack_ix >= 0)
1338 gimme = cxstack[cxstack_ix].blk_gimme;
1344 if (gimme == G_VOID)
1346 else if (gimme == G_SCALAR) {
1349 if (SvFLAGS(TOPs) & (SVs_PADTMP|SVs_TEMP))
1352 *MARK = sv_mortalcopy(TOPs);
1359 else if (gimme == G_ARRAY) {
1360 /* in case LEAVE wipes old return values */
1361 for (mark = newsp + 1; mark <= SP; mark++) {
1362 if (!(SvFLAGS(*mark) & (SVs_PADTMP|SVs_TEMP))) {
1363 *mark = sv_mortalcopy(*mark);
1364 TAINT_NOT; /* Each item is independent */
1368 curpm = newpm; /* Don't pop $1 et al till now */
1378 register PERL_CONTEXT *cx;
1383 cx = &cxstack[cxstack_ix];
1384 if (cx->cx_type != CXt_LOOP)
1385 DIE("panic: pp_iter");
1387 av = cx->blk_loop.iterary;
1388 if (cx->blk_loop.iterix >= (av == curstack ? cx->blk_oldsp : AvFILL(av)))
1391 SvREFCNT_dec(*cx->blk_loop.itervar);
1393 if (sv = (SvMAGICAL(av))
1394 ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE)
1395 : AvARRAY(av)[++cx->blk_loop.iterix])
1399 if (av != curstack && SvIMMORTAL(sv)) {
1400 SV *lv = cx->blk_loop.iterlval;
1401 if (lv && SvREFCNT(lv) > 1) {
1406 SvREFCNT_dec(LvTARG(lv));
1408 lv = cx->blk_loop.iterlval = NEWSV(26, 0);
1409 sv_upgrade(lv, SVt_PVLV);
1411 sv_magic(lv, Nullsv, 'y', Nullch, 0);
1413 LvTARG(lv) = SvREFCNT_inc(av);
1414 LvTARGOFF(lv) = cx->blk_loop.iterix;
1415 LvTARGLEN(lv) = (UV) -1;
1419 *cx->blk_loop.itervar = SvREFCNT_inc(sv);
1426 register PMOP *pm = cPMOP;
1442 register REGEXP *rx = pm->op_pmregexp;
1444 int force_on_match = 0;
1445 I32 oldsave = savestack_ix;
1446 I32 update_minmatch = 1;
1449 /* known replacement string? */
1450 dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv;
1451 if (op->op_flags & OPf_STACKED)
1457 if (SvREADONLY(TARG)
1458 || (SvTYPE(TARG) > SVt_PVLV
1459 && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
1461 s = SvPV(TARG, len);
1462 if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV)
1468 DIE("panic: do_subst");
1471 maxiters = (strend - s) + 10;
1473 if (!rx->prelen && curpm) {
1475 rx = pm->op_pmregexp;
1477 screamer = ( (SvSCREAM(TARG) && rx->check_substr
1478 && SvTYPE(rx->check_substr) == SVt_PVBM
1479 && SvVALID(rx->check_substr))
1481 safebase = (!rx->nparens && !sawampersand) ? 0 : REXEC_COPY_STR;
1482 if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) {
1484 multiline = pm->op_pmflags & PMf_MULTILINE;
1487 if (rx->check_substr) {
1488 if (!(rx->reganch & ROPT_NOSCAN)) { /* It floats. */
1492 if (screamfirst[BmRARE(rx->check_substr)] < 0)
1494 else if (!(s = screaminstr(TARG, rx->check_substr, rx->check_offset_min, 0, &p, 0)))
1497 else if (!(s = fbm_instr((unsigned char*)s + rx->check_offset_min,
1498 (unsigned char*)strend,
1501 if (s && rx->check_offset_max < s - m) {
1502 ++BmUSEFUL(rx->check_substr);
1503 s -= rx->check_offset_max;
1508 /* Now checkstring is fixed, i.e. at fixed offset from the
1509 beginning of match, and the match is anchored at s. */
1510 else if (!multiline) { /* Anchored at beginning of string. */
1512 if (*SvPVX(rx->check_substr) != s[rx->check_offset_min]
1513 || ((slen = SvCUR(rx->check_substr)) > 1
1514 && memNE(SvPVX(rx->check_substr),
1515 s + rx->check_offset_min, slen)))
1518 if (!rx->naughty && --BmUSEFUL(rx->check_substr) < 0
1519 && rx->check_substr == rx->float_substr) {
1520 SvREFCNT_dec(rx->check_substr);
1521 rx->check_substr = Nullsv; /* opt is being useless */
1522 rx->float_substr = Nullsv;
1526 /* only replace once? */
1527 once = !(rpm->op_pmflags & PMf_GLOBAL);
1529 /* known replacement string? */
1530 c = dstr ? SvPV(dstr, clen) : Nullch;
1532 /* can do inplace substitution? */
1533 if (c && clen <= rx->minlen && (once || !(safebase & REXEC_COPY_STR))
1534 && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) {
1535 if (!regexec_flags(rx, s, strend, orig, 0, screamer, NULL, safebase)) {
1537 LEAVE_SCOPE(oldsave);
1540 if (force_on_match) {
1542 s = SvPV_force(TARG, len);
1547 SvSCREAM_off(TARG); /* disable possible screamer */
1549 rxtainted = RX_MATCH_TAINTED(rx);
1551 m = orig + (rx->startp[0] - rx->subbase);
1552 d = orig + (rx->endp[0] - rx->subbase);
1558 if (m - s > strend - d) { /* faster to shorten from end */
1560 Copy(c, m, clen, char);
1565 Move(d, m, i, char);
1569 SvCUR_set(TARG, m - s);
1572 else if (i = m - s) { /* faster from front */
1580 Copy(c, m, clen, char);
1585 Copy(c, d, clen, char);
1590 TAINT_IF(rxtainted);
1596 if (iters++ > maxiters)
1597 DIE("Substitution loop");
1598 rxtainted |= RX_MATCH_TAINTED(rx);
1603 Move(s, d, i, char);
1607 Copy(c, d, clen, char);
1611 } while (regexec_flags(rx, s, strend, orig, s == m,
1612 Nullsv, NULL, 0)); /* don't match same null twice */
1615 SvCUR_set(TARG, d - SvPVX(TARG) + i);
1616 Move(s, d, i+1, char); /* include the NUL */
1618 TAINT_IF(rxtainted);
1619 PUSHs(sv_2mortal(newSViv((I32)iters)));
1621 (void)SvPOK_only(TARG);
1624 LEAVE_SCOPE(oldsave);
1628 if (regexec_flags(rx, s, strend, orig, 0, screamer, NULL, safebase)) {
1629 if (force_on_match) {
1631 s = SvPV_force(TARG, len);
1634 rxtainted = RX_MATCH_TAINTED(rx);
1635 dstr = NEWSV(25, sv_len(TARG));
1636 sv_setpvn(dstr, m, s-m);
1639 register PERL_CONTEXT *cx;
1641 RETURNOP(cPMOP->op_pmreplroot);
1644 if (iters++ > maxiters)
1645 DIE("Substitution loop");
1646 rxtainted |= RX_MATCH_TAINTED(rx);
1647 if (rx->subbase && rx->subbase != orig) {
1652 strend = s + (strend - m);
1655 sv_catpvn(dstr, s, m-s);
1658 sv_catpvn(dstr, c, clen);
1661 } while (regexec_flags(rx, s, strend, orig, s == m, Nullsv, NULL, safebase));
1662 sv_catpvn(dstr, s, strend - s);
1664 TAINT_IF(rxtainted);
1666 (void)SvOOK_off(TARG);
1667 Safefree(SvPVX(TARG));
1668 SvPVX(TARG) = SvPVX(dstr);
1669 SvCUR_set(TARG, SvCUR(dstr));
1670 SvLEN_set(TARG, SvLEN(dstr));
1674 (void)SvPOK_only(TARG);
1677 PUSHs(sv_2mortal(newSViv((I32)iters)));
1678 LEAVE_SCOPE(oldsave);
1684 ++BmUSEFUL(rx->check_substr);
1688 LEAVE_SCOPE(oldsave);
1697 stack_base[markstack_ptr[-1]++] = stack_base[*markstack_ptr];
1699 LEAVE; /* exit inner scope */
1702 if (stack_base + *markstack_ptr > sp) {
1704 I32 gimme = GIMME_V;
1706 LEAVE; /* exit outer scope */
1707 (void)POPMARK; /* pop src */
1708 items = --*markstack_ptr - markstack_ptr[-1];
1709 (void)POPMARK; /* pop dst */
1710 SP = stack_base + POPMARK; /* pop original mark */
1711 if (gimme == G_SCALAR) {
1715 else if (gimme == G_ARRAY)
1722 ENTER; /* enter inner scope */
1725 src = stack_base[*markstack_ptr];
1729 RETURNOP(cLOGOP->op_other);
1740 register PERL_CONTEXT *cx;
1741 struct block_sub cxsub;
1744 POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
1747 if (gimme == G_SCALAR) {
1750 *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs);
1757 else if (gimme == G_ARRAY) {
1758 for (MARK = newsp + 1; MARK <= SP; MARK++) {
1759 if (!SvTEMP(*MARK)) {
1760 *MARK = sv_mortalcopy(*MARK);
1761 TAINT_NOT; /* Each item is independent */
1767 POPSUB2(); /* Stack values are safe: release CV and @_ ... */
1768 curpm = newpm; /* ... and pop $1 et al */
1771 return pop_return();
1775 get_db_sub(SV **svp, CV *cv)
1784 if ( (CvFLAGS(cv) & (CVf_ANON | CVf_CLONED))
1785 || strEQ(GvNAME(gv), "END")
1786 || ((GvCV(gv) != cv) && /* Could be imported, and old sub redefined. */
1787 !( (SvTYPE(oldsv) == SVt_PVGV) && (GvCV((GV*)oldsv) == cv)
1788 && (gv = (GV*)oldsv) ))) {
1789 /* Use GV from the stack as a fallback. */
1790 /* GV is potentially non-unique, or contain different CV. */
1791 sv_setsv(*svp, newRV((SV*)cv));
1794 gv_efullname3(*svp, gv, Nullch);
1808 register PERL_CONTEXT *cx;
1810 bool hasargs = (op->op_flags & OPf_STACKED) != 0;
1813 DIE("Not a CODE reference");
1814 switch (SvTYPE(sv)) {
1819 if (sv == &sv_yes) { /* unfound import, ignore */
1821 SP = stack_base + POPMARK;
1824 if (SvGMAGICAL(sv)) {
1826 sym = SvPOKp(sv) ? SvPVX(sv) : Nullch;
1831 DIE(no_usym, "a subroutine");
1832 if (op->op_private & HINT_STRICT_REFS)
1833 DIE(no_symref, sym, "a subroutine");
1834 cv = perl_get_cv(sym, TRUE);
1838 if (SvTYPE(cv) == SVt_PVCV)
1843 DIE("Not a CODE reference");
1848 if (!(cv = GvCVu((GV*)sv)))
1849 cv = sv_2cv(sv, &stash, &gv, TRUE);
1858 DIE("Not a CODE reference");
1860 if (!CvROOT(cv) && !CvXSUB(cv)) {
1864 /* anonymous or undef'd function leaves us no recourse */
1865 if (CvANON(cv) || !(gv = CvGV(cv)))
1866 DIE("Undefined subroutine called");
1867 /* autoloaded stub? */
1868 if (cv != GvCV(gv)) {
1872 /* should call AUTOLOAD now? */
1873 if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv),
1880 sub_name = sv_newmortal();
1881 gv_efullname3(sub_name, gv, Nullch);
1882 DIE("Undefined subroutine &%s called", SvPVX(sub_name));
1886 if ((op->op_private & OPpENTERSUB_DB) && GvCV(DBsub) && !CvNODEBUG(cv))
1887 cv = get_db_sub(&sv, cv);
1889 DIE("No DBsub routine");
1893 * First we need to check if the sub or method requires locking.
1894 * If so, we gain a lock on the CV, the first argument or the
1895 * stash (for static methods), as appropriate. This has to be
1896 * inline because for FAKE_THREADS, COND_WAIT inlines code to
1897 * reschedule by returning a new op.
1899 MUTEX_LOCK(CvMUTEXP(cv));
1900 if (CvFLAGS(cv) & CVf_LOCKED) {
1902 if (CvFLAGS(cv) & CVf_METHOD) {
1903 if (SP > stack_base + TOPMARK)
1904 sv = *(stack_base + TOPMARK + 1);
1906 MUTEX_UNLOCK(CvMUTEXP(cv));
1907 croak("no argument for locked method call");
1913 char *stashname = SvPV(sv, len);
1914 sv = (SV*)gv_stashpvn(stashname, len, TRUE);
1920 MUTEX_UNLOCK(CvMUTEXP(cv));
1921 mg = condpair_magic(sv);
1922 MUTEX_LOCK(MgMUTEXP(mg));
1923 if (MgOWNER(mg) == thr)
1924 MUTEX_UNLOCK(MgMUTEXP(mg));
1927 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
1929 DEBUG_L(PerlIO_printf(PerlIO_stderr(), "%p: pp_entersub lock %p\n",
1931 MUTEX_UNLOCK(MgMUTEXP(mg));
1932 SvREFCNT_inc(sv); /* Keep alive until magic_mutexfree */
1933 save_destructor(unlock_condpair, sv);
1935 MUTEX_LOCK(CvMUTEXP(cv));
1938 * Now we have permission to enter the sub, we must distinguish
1939 * four cases. (0) It's an XSUB (in which case we don't care
1940 * about ownership); (1) it's ours already (and we're recursing);
1941 * (2) it's free (but we may already be using a cached clone);
1942 * (3) another thread owns it. Case (1) is easy: we just use it.
1943 * Case (2) means we look for a clone--if we have one, use it
1944 * otherwise grab ownership of cv. Case (3) means we look for a
1945 * clone (for non-XSUBs) and have to create one if we don't
1947 * Why look for a clone in case (2) when we could just grab
1948 * ownership of cv straight away? Well, we could be recursing,
1949 * i.e. we originally tried to enter cv while another thread
1950 * owned it (hence we used a clone) but it has been freed up
1951 * and we're now recursing into it. It may or may not be "better"
1952 * to use the clone but at least CvDEPTH can be trusted.
1954 if (CvOWNER(cv) == thr || CvXSUB(cv))
1955 MUTEX_UNLOCK(CvMUTEXP(cv));
1957 /* Case (2) or (3) */
1961 * XXX Might it be better to release CvMUTEXP(cv) while we
1962 * do the hv_fetch? We might find someone has pinched it
1963 * when we look again, in which case we would be in case
1964 * (3) instead of (2) so we'd have to clone. Would the fact
1965 * that we released the mutex more quickly make up for this?
1967 svp = hv_fetch(thr->cvcache, (char *)cv, sizeof(cv), FALSE);
1969 /* We already have a clone to use */
1970 MUTEX_UNLOCK(CvMUTEXP(cv));
1972 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1973 "entersub: %p already has clone %p:%s\n",
1974 thr, cv, SvPEEK((SV*)cv)));
1977 if (CvDEPTH(cv) == 0)
1978 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
1981 /* (2) => grab ownership of cv. (3) => make clone */
1985 MUTEX_UNLOCK(CvMUTEXP(cv));
1986 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
1987 "entersub: %p grabbing %p:%s in stash %s\n",
1988 thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ?
1989 HvNAME(CvSTASH(cv)) : "(none)"));
1991 /* Make a new clone. */
1993 SvREFCNT_inc(cv); /* don't let it vanish from under us */
1994 MUTEX_UNLOCK(CvMUTEXP(cv));
1995 DEBUG_L((PerlIO_printf(PerlIO_stderr(),
1996 "entersub: %p cloning %p:%s\n",
1997 thr, cv, SvPEEK((SV*)cv))));
1999 * We're creating a new clone so there's no race
2000 * between the original MUTEX_UNLOCK and the
2001 * SvREFCNT_inc since no one will be trying to undef
2002 * it out from underneath us. At least, I don't think
2005 clonecv = cv_clone(cv);
2006 SvREFCNT_dec(cv); /* finished with this */
2007 hv_store(thr->cvcache, (char*)cv, sizeof(cv), (SV*)clonecv,0);
2008 CvOWNER(clonecv) = thr;
2012 DEBUG_L(if (CvDEPTH(cv) != 0)
2013 PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n",
2015 SAVEDESTRUCTOR(unset_cvowner, (void*) cv);
2018 #endif /* USE_THREADS */
2023 if (CvOLDSTYLE(cv)) {
2024 I32 (*fp3)_((int,int,int));
2026 register I32 items = SP - MARK;
2027 /* We dont worry to copy from @_. */
2032 stack_sp = mark + 1;
2033 fp3 = (I32(*)_((int,int,int)))CvXSUB(cv);
2034 items = (*fp3)(CvXSUBANY(cv).any_i32,
2035 MARK - stack_base + 1,
2037 stack_sp = stack_base + items;
2040 I32 markix = TOPMARK;
2045 /* Need to copy @_ to stack. Alternative may be to
2046 * switch stack to @_, and copy return values
2047 * back. This would allow popping @_ in XSUB, e.g.. XXXX */
2051 av = (AV*)curpad[0];
2054 #endif /* USE_THREADS */
2055 items = AvFILLp(av) + 1; /* @_ is not tieable */
2058 /* Mark is at the end of the stack. */
2060 Copy(AvARRAY(av), sp + 1, items, SV*);
2065 if (curcopdb) { /* We assume that the first
2066 XSUB in &DB::sub is the
2072 /* Do we need to open block here? XXXX */
2073 (void)(*CvXSUB(cv))(cv);
2075 /* Enforce some sanity in scalar context. */
2076 if (gimme == G_SCALAR && ++markix != stack_sp - stack_base ) {
2077 if (markix > stack_sp - stack_base)
2078 *(stack_base + markix) = &sv_undef;
2080 *(stack_base + markix) = *stack_sp;
2081 stack_sp = stack_base + markix;
2089 register I32 items = SP - MARK;
2090 AV* padlist = CvPADLIST(cv);
2091 SV** svp = AvARRAY(padlist);
2092 push_return(op->op_next);
2093 PUSHBLOCK(cx, CXt_SUB, MARK);
2096 if (CvDEPTH(cv) < 2)
2097 (void)SvREFCNT_inc(cv);
2098 else { /* save temporaries on recursion? */
2099 if (CvDEPTH(cv) == 100 && dowarn
2100 && !(PERLDB_SUB && cv == GvCV(DBsub)))
2101 sub_crush_depth(cv);
2102 if (CvDEPTH(cv) > AvFILLp(padlist)) {
2104 AV *newpad = newAV();
2105 SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]);
2106 I32 ix = AvFILLp((AV*)svp[1]);
2107 svp = AvARRAY(svp[0]);
2108 for ( ;ix > 0; ix--) {
2109 if (svp[ix] != &sv_undef) {
2110 char *name = SvPVX(svp[ix]);
2111 if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */
2112 || *name == '&') /* anonymous code? */
2114 av_store(newpad, ix, SvREFCNT_inc(oldpad[ix]));
2116 else { /* our own lexical */
2118 av_store(newpad, ix, sv = (SV*)newAV());
2119 else if (*name == '%')
2120 av_store(newpad, ix, sv = (SV*)newHV());
2122 av_store(newpad, ix, sv = NEWSV(0,0));
2127 av_store(newpad, ix, sv = NEWSV(0,0));
2131 av = newAV(); /* will be @_ */
2133 av_store(newpad, 0, (SV*)av);
2134 AvFLAGS(av) = AVf_REIFY;
2135 av_store(padlist, CvDEPTH(cv), (SV*)newpad);
2136 AvFILLp(padlist) = CvDEPTH(cv);
2137 svp = AvARRAY(padlist);
2142 AV* av = (AV*)curpad[0];
2144 items = AvFILLp(av) + 1;
2146 /* Mark is at the end of the stack. */
2148 Copy(AvARRAY(av), sp + 1, items, SV*);
2153 #endif /* USE_THREADS */
2155 curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]);
2158 #endif /* USE_THREADS */
2164 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
2165 "%p entersub preparing @_\n", thr));
2167 av = (AV*)curpad[0];
2173 cx->blk_sub.savearray = GvAV(defgv);
2174 GvAV(defgv) = (AV*)SvREFCNT_inc(av);
2175 #endif /* USE_THREADS */
2176 cx->blk_sub.argarray = av;
2179 if (items > AvMAX(av) + 1) {
2181 if (AvARRAY(av) != ary) {
2182 AvMAX(av) += AvARRAY(av) - AvALLOC(av);
2183 SvPVX(av) = (char*)ary;
2185 if (items > AvMAX(av) + 1) {
2186 AvMAX(av) = items - 1;
2187 Renew(ary,items,SV*);
2189 SvPVX(av) = (char*)ary;
2192 Copy(MARK,AvARRAY(av),items,SV*);
2193 AvFILLp(av) = items - 1;
2202 DEBUG_L(PerlIO_printf(PerlIO_stderr(),
2203 "%p entersub returning %p\n", thr, CvSTART(cv)));
2205 RETURNOP(CvSTART(cv));
2210 sub_crush_depth(CV *cv)
2213 warn("Deep recursion on anonymous subroutine");
2215 SV* tmpstr = sv_newmortal();
2216 gv_efullname3(tmpstr, CvGV(cv), Nullch);
2217 warn("Deep recursion on subroutine \"%s\"", SvPVX(tmpstr));
2227 U32 lval = op->op_flags & OPf_MOD;
2228 U32 defer = (op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av));
2231 elem -= curcop->cop_arybase;
2232 if (SvTYPE(av) != SVt_PVAV)
2234 svp = av_fetch(av, elem, lval && !defer);
2236 if (!svp || *svp == &sv_undef) {
2239 DIE(no_aelem, elem);
2240 lv = sv_newmortal();
2241 sv_upgrade(lv, SVt_PVLV);
2243 sv_magic(lv, Nullsv, 'y', Nullch, 0);
2244 LvTARG(lv) = SvREFCNT_inc(av);
2245 LvTARGOFF(lv) = elem;
2250 if (op->op_private & OPpLVAL_INTRO)
2252 else if (op->op_private & OPpDEREF)
2253 vivify_ref(*svp, op->op_private & OPpDEREF);
2255 PUSHs(svp ? *svp : &sv_undef);
2260 vivify_ref(SV *sv, U32 to_what)
2267 if (SvTYPE(sv) < SVt_RV)
2268 sv_upgrade(sv, SVt_RV);
2269 else if (SvTYPE(sv) >= SVt_PV) {
2270 (void)SvOOK_off(sv);
2271 Safefree(SvPVX(sv));
2272 SvLEN(sv) = SvCUR(sv) = 0;
2276 SvRV(sv) = newSV(0);
2279 SvRV(sv) = (SV*)newAV();
2282 SvRV(sv) = (SV*)newHV();
2303 if (SvTYPE(sv) == SVt_PVCV) {
2309 name = SvPV(TOPs, na);
2310 sv = *(stack_base + TOPMARK + 1);
2321 !(packname = SvPV(sv, packlen)) ||
2322 !(iogv = gv_fetchpv(packname, FALSE, SVt_PVIO)) ||
2323 !(ob=(SV*)GvIO(iogv)))
2325 if (!packname || !isIDFIRST(*packname))
2326 DIE("Can't call method \"%s\" without a package or object reference", name);
2327 stash = gv_stashpvn(packname, packlen, TRUE);
2330 *(stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv));
2333 if (!ob || !SvOBJECT(ob))
2334 DIE("Can't call method \"%s\" on unblessed reference", name);
2336 stash = SvSTASH(ob);
2339 gv = gv_fetchmethod(stash, name);
2345 for (p = name; *p; p++) {
2347 sep = p, leaf = p + 1;
2348 else if (*p == ':' && *(p + 1) == ':')
2349 sep = p, leaf = p + 2;
2351 if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) {
2352 packname = HvNAME(sep ? curcop->cop_stash : stash);
2353 packlen = strlen(packname);
2357 packlen = sep - name;
2359 DIE("Can't locate object method \"%s\" via package \"%.*s\"",
2360 leaf, (int)packlen, packname);
2362 SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv);