3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "It's a big house this, and very peculiar. Always a bit more to discover,
13 * and no knowing what you'll find around a corner. And Elves, sir!" --Samwise
16 /* This file contains general pp ("push/pop") functions that execute the
17 * opcodes that make up a perl program. A typical pp function expects to
18 * find its arguments on the stack, and usually pushes its results onto
19 * the stack, hence the 'pp' terminology. Each OP structure contains
20 * a pointer to the relevant pp_foo() function.
30 /* XXX I can't imagine anyone who doesn't have this actually _needs_
31 it, since pid_t is an integral type.
34 #ifdef NEED_GETPID_PROTO
35 extern Pid_t getpid (void);
39 * Some BSDs and Cygwin default to POSIX math instead of IEEE.
40 * This switches them over to IEEE.
42 #if defined(LIBM_LIB_VERSION)
43 _LIB_VERSION_TYPE _LIB_VERSION = _IEEE_;
46 /* variations on pp_null */
52 if (GIMME_V == G_SCALAR)
63 if (PL_op->op_private & OPpLVAL_INTRO)
64 if (!(PL_op->op_private & OPpPAD_STATE))
65 SAVECLEARSV(PAD_SVl(PL_op->op_targ));
67 if (PL_op->op_flags & OPf_REF) {
71 if (GIMME == G_SCALAR)
72 Perl_croak(aTHX_ "Can't return array to lvalue scalar context");
77 if (gimme == G_ARRAY) {
78 const I32 maxarg = AvFILL((AV*)TARG) + 1;
80 if (SvMAGICAL(TARG)) {
82 for (i=0; i < (U32)maxarg; i++) {
83 SV * const * const svp = av_fetch((AV*)TARG, i, FALSE);
84 SP[i+1] = (svp) ? *svp : &PL_sv_undef;
88 Copy(AvARRAY((AV*)TARG), SP+1, maxarg, SV*);
92 else if (gimme == G_SCALAR) {
93 SV* const sv = sv_newmortal();
94 const I32 maxarg = AvFILL((AV*)TARG) + 1;
107 if (PL_op->op_private & OPpLVAL_INTRO)
108 if (!(PL_op->op_private & OPpPAD_STATE))
109 SAVECLEARSV(PAD_SVl(PL_op->op_targ));
110 if (PL_op->op_flags & OPf_REF)
113 if (GIMME == G_SCALAR)
114 Perl_croak(aTHX_ "Can't return hash to lvalue scalar context");
118 if (gimme == G_ARRAY) {
121 else if (gimme == G_SCALAR) {
122 SV* const sv = Perl_hv_scalar(aTHX_ (HV*)TARG);
136 tryAMAGICunDEREF(to_gv);
139 if (SvTYPE(sv) == SVt_PVIO) {
140 GV * const gv = (GV*) sv_newmortal();
141 gv_init(gv, 0, "", 0, 0);
142 GvIOp(gv) = (IO *)sv;
143 SvREFCNT_inc_void_NN(sv);
146 else if (SvTYPE(sv) != SVt_PVGV)
147 DIE(aTHX_ "Not a GLOB reference");
150 if (SvTYPE(sv) != SVt_PVGV) {
151 if (SvGMAGICAL(sv)) {
156 if (!SvOK(sv) && sv != &PL_sv_undef) {
157 /* If this is a 'my' scalar and flag is set then vivify
161 Perl_croak(aTHX_ PL_no_modify);
162 if (PL_op->op_private & OPpDEREF) {
164 if (cUNOP->op_targ) {
166 SV * const namesv = PAD_SV(cUNOP->op_targ);
167 const char * const name = SvPV(namesv, len);
169 gv_init(gv, CopSTASH(PL_curcop), name, len, 0);
172 const char * const name = CopSTASHPV(PL_curcop);
175 prepare_SV_for_RV(sv);
176 SvRV_set(sv, (SV*)gv);
181 if (PL_op->op_flags & OPf_REF ||
182 PL_op->op_private & HINT_STRICT_REFS)
183 DIE(aTHX_ PL_no_usym, "a symbol");
184 if (ckWARN(WARN_UNINITIALIZED))
188 if ((PL_op->op_flags & OPf_SPECIAL) &&
189 !(PL_op->op_flags & OPf_MOD))
191 SV * const temp = (SV*)gv_fetchsv(sv, 0, SVt_PVGV);
193 && (!is_gv_magical_sv(sv,0)
194 || !(sv = (SV*)gv_fetchsv(sv, GV_ADD, SVt_PVGV)))) {
200 if (PL_op->op_private & HINT_STRICT_REFS)
201 DIE(aTHX_ PL_no_symref_sv, sv, "a symbol");
202 if ((PL_op->op_private & (OPpLVAL_INTRO|OPpDONT_INIT_GV))
203 == OPpDONT_INIT_GV) {
204 /* We are the target of a coderef assignment. Return
205 the scalar unchanged, and let pp_sasssign deal with
209 sv = (SV*)gv_fetchsv(sv, GV_ADD, SVt_PVGV);
213 if (PL_op->op_private & OPpLVAL_INTRO)
214 save_gp((GV*)sv, !(PL_op->op_flags & OPf_SPECIAL));
219 /* Helper function for pp_rv2sv and pp_rv2av */
221 Perl_softref2xv(pTHX_ SV *const sv, const char *const what, const U32 type,
227 PERL_ARGS_ASSERT_SOFTREF2XV;
229 if (PL_op->op_private & HINT_STRICT_REFS) {
231 Perl_die(aTHX_ PL_no_symref_sv, sv, what);
233 Perl_die(aTHX_ PL_no_usym, what);
236 if (PL_op->op_flags & OPf_REF)
237 Perl_die(aTHX_ PL_no_usym, what);
238 if (ckWARN(WARN_UNINITIALIZED))
240 if (type != SVt_PV && GIMME_V == G_ARRAY) {
244 **spp = &PL_sv_undef;
247 if ((PL_op->op_flags & OPf_SPECIAL) &&
248 !(PL_op->op_flags & OPf_MOD))
250 gv = gv_fetchsv(sv, 0, type);
252 && (!is_gv_magical_sv(sv,0)
253 || !(gv = gv_fetchsv(sv, GV_ADD, type))))
255 **spp = &PL_sv_undef;
260 gv = gv_fetchsv(sv, GV_ADD, type);
272 tryAMAGICunDEREF(to_sv);
275 switch (SvTYPE(sv)) {
281 DIE(aTHX_ "Not a SCALAR reference");
288 if (SvTYPE(gv) != SVt_PVGV) {
289 if (SvGMAGICAL(sv)) {
294 gv = Perl_softref2xv(aTHX_ sv, "a SCALAR", SVt_PV, &sp);
300 if (PL_op->op_flags & OPf_MOD) {
301 if (PL_op->op_private & OPpLVAL_INTRO) {
302 if (cUNOP->op_first->op_type == OP_NULL)
303 sv = save_scalar((GV*)TOPs);
305 sv = save_scalar(gv);
307 Perl_croak(aTHX_ PL_no_localize_ref);
309 else if (PL_op->op_private & OPpDEREF)
310 vivify_ref(sv, PL_op->op_private & OPpDEREF);
319 AV * const av = (AV*)TOPs;
320 SV ** const sv = Perl_av_arylen_p(aTHX_ (AV*)av);
322 *sv = newSV_type(SVt_PVMG);
323 sv_magic(*sv, (SV*)av, PERL_MAGIC_arylen, NULL, 0);
331 dVAR; dSP; dTARGET; dPOPss;
333 if (PL_op->op_flags & OPf_MOD || LVRET) {
334 if (SvTYPE(TARG) < SVt_PVLV) {
335 sv_upgrade(TARG, SVt_PVLV);
336 sv_magic(TARG, NULL, PERL_MAGIC_pos, NULL, 0);
340 if (LvTARG(TARG) != sv) {
342 SvREFCNT_dec(LvTARG(TARG));
343 LvTARG(TARG) = SvREFCNT_inc_simple(sv);
345 PUSHs(TARG); /* no SvSETMAGIC */
349 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
350 const MAGIC * const mg = mg_find(sv, PERL_MAGIC_regex_global);
351 if (mg && mg->mg_len >= 0) {
355 PUSHi(i + CopARYBASE_get(PL_curcop));
368 const I32 flags = (PL_op->op_flags & OPf_SPECIAL)
370 : ((PL_op->op_private & (OPpLVAL_INTRO|OPpMAY_RETURN_CONSTANT)) == OPpMAY_RETURN_CONSTANT)
373 /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */
374 /* (But not in defined().) */
376 CV *cv = sv_2cv(TOPs, &stash_unused, &gv, flags);
379 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
380 if ((PL_op->op_private & OPpLVAL_INTRO)) {
381 if (gv && GvCV(gv) == cv && (gv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), FALSE)))
384 DIE(aTHX_ "Can't modify non-lvalue subroutine call");
387 else if ((flags == (GV_ADD|GV_NOEXPAND)) && gv && SvROK(gv)) {
391 cv = (CV*)&PL_sv_undef;
402 SV *ret = &PL_sv_undef;
404 if (SvPOK(TOPs) && SvCUR(TOPs) >= 7) {
405 const char * s = SvPVX_const(TOPs);
406 if (strnEQ(s, "CORE::", 6)) {
407 const int code = keyword(s + 6, SvCUR(TOPs) - 6, 1);
408 if (code < 0) { /* Overridable. */
409 #define MAX_ARGS_OP ((sizeof(I32) - 1) * 2)
410 int i = 0, n = 0, seen_question = 0, defgv = 0;
412 char str[ MAX_ARGS_OP * 2 + 2 ]; /* One ';', one '\0' */
414 if (code == -KEY_chop || code == -KEY_chomp
415 || code == -KEY_exec || code == -KEY_system)
417 if (code == -KEY_mkdir) {
418 ret = newSVpvs_flags("_;$", SVs_TEMP);
421 if (code == -KEY_readpipe) {
422 s = "CORE::backtick";
424 while (i < MAXO) { /* The slow way. */
425 if (strEQ(s + 6, PL_op_name[i])
426 || strEQ(s + 6, PL_op_desc[i]))
432 goto nonesuch; /* Should not happen... */
434 defgv = PL_opargs[i] & OA_DEFGV;
435 oa = PL_opargs[i] >> OASHIFT;
437 if (oa & OA_OPTIONAL && !seen_question && !defgv) {
441 if ((oa & (OA_OPTIONAL - 1)) >= OA_AVREF
442 && (oa & (OA_OPTIONAL - 1)) <= OA_SCALARREF
443 /* But globs are already references (kinda) */
444 && (oa & (OA_OPTIONAL - 1)) != OA_FILEREF
448 str[n++] = ("?$@@%&*$")[oa & (OA_OPTIONAL - 1)];
451 if (defgv && str[n - 1] == '$')
454 ret = newSVpvn_flags(str, n - 1, SVs_TEMP);
456 else if (code) /* Non-Overridable */
458 else { /* None such */
460 DIE(aTHX_ "Can't find an opnumber for \"%s\"", s+6);
464 cv = sv_2cv(TOPs, &stash, &gv, 0);
466 ret = newSVpvn_flags(SvPVX_const(cv), SvCUR(cv), SVs_TEMP);
475 CV* cv = (CV*)PAD_SV(PL_op->op_targ);
477 cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
493 if (GIMME != G_ARRAY) {
497 *MARK = &PL_sv_undef;
498 *MARK = refto(*MARK);
502 EXTEND_MORTAL(SP - MARK);
504 *MARK = refto(*MARK);
509 S_refto(pTHX_ SV *sv)
514 PERL_ARGS_ASSERT_REFTO;
516 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') {
519 if (!(sv = LvTARG(sv)))
522 SvREFCNT_inc_void_NN(sv);
524 else if (SvTYPE(sv) == SVt_PVAV) {
525 if (!AvREAL((AV*)sv) && AvREIFY((AV*)sv))
528 SvREFCNT_inc_void_NN(sv);
530 else if (SvPADTMP(sv) && !IS_PADGV(sv))
534 SvREFCNT_inc_void_NN(sv);
537 sv_upgrade(rv, SVt_IV);
547 SV * const sv = POPs;
552 if (!sv || !SvROK(sv))
555 pv = sv_reftype(SvRV(sv),TRUE);
556 PUSHp(pv, strlen(pv));
566 stash = CopSTASH(PL_curcop);
568 SV * const ssv = POPs;
572 if (ssv && !SvGMAGICAL(ssv) && !SvAMAGIC(ssv) && SvROK(ssv))
573 Perl_croak(aTHX_ "Attempt to bless into a reference");
574 ptr = SvPV_const(ssv,len);
575 if (len == 0 && ckWARN(WARN_MISC))
576 Perl_warner(aTHX_ packWARN(WARN_MISC),
577 "Explicit blessing to '' (assuming package main)");
578 stash = gv_stashpvn(ptr, len, GV_ADD);
581 (void)sv_bless(TOPs, stash);
590 const char * const elem = SvPV_nolen_const(sv);
591 GV * const gv = (GV*)POPs;
596 /* elem will always be NUL terminated. */
597 const char * const second_letter = elem + 1;
600 if (strEQ(second_letter, "RRAY"))
601 tmpRef = (SV*)GvAV(gv);
604 if (strEQ(second_letter, "ODE"))
605 tmpRef = (SV*)GvCVu(gv);
608 if (strEQ(second_letter, "ILEHANDLE")) {
609 /* finally deprecated in 5.8.0 */
610 deprecate("*glob{FILEHANDLE}");
611 tmpRef = (SV*)GvIOp(gv);
614 if (strEQ(second_letter, "ORMAT"))
615 tmpRef = (SV*)GvFORM(gv);
618 if (strEQ(second_letter, "LOB"))
622 if (strEQ(second_letter, "ASH"))
623 tmpRef = (SV*)GvHV(gv);
626 if (*second_letter == 'O' && !elem[2])
627 tmpRef = (SV*)GvIOp(gv);
630 if (strEQ(second_letter, "AME"))
631 sv = newSVhek(GvNAME_HEK(gv));
634 if (strEQ(second_letter, "ACKAGE")) {
635 const HV * const stash = GvSTASH(gv);
636 const HEK * const hek = stash ? HvNAME_HEK(stash) : NULL;
637 sv = hek ? newSVhek(hek) : newSVpvs("__ANON__");
641 if (strEQ(second_letter, "CALAR"))
656 /* Pattern matching */
661 register unsigned char *s;
664 register I32 *sfirst;
668 if (sv == PL_lastscream) {
672 s = (unsigned char*)(SvPV(sv, len));
674 if (pos <= 0 || !SvPOK(sv) || SvUTF8(sv)) {
675 /* No point in studying a zero length string, and not safe to study
676 anything that doesn't appear to be a simple scalar (and hence might
677 change between now and when the regexp engine runs without our set
678 magic ever running) such as a reference to an object with overloaded
684 SvSCREAM_off(PL_lastscream);
685 SvREFCNT_dec(PL_lastscream);
687 PL_lastscream = SvREFCNT_inc_simple(sv);
689 s = (unsigned char*)(SvPV(sv, len));
693 if (pos > PL_maxscream) {
694 if (PL_maxscream < 0) {
695 PL_maxscream = pos + 80;
696 Newx(PL_screamfirst, 256, I32);
697 Newx(PL_screamnext, PL_maxscream, I32);
700 PL_maxscream = pos + pos / 4;
701 Renew(PL_screamnext, PL_maxscream, I32);
705 sfirst = PL_screamfirst;
706 snext = PL_screamnext;
708 if (!sfirst || !snext)
709 DIE(aTHX_ "do_study: out of memory");
711 for (ch = 256; ch; --ch)
716 register const I32 ch = s[pos];
718 snext[pos] = sfirst[ch] - pos;
725 /* piggyback on m//g magic */
726 sv_magic(sv, NULL, PERL_MAGIC_regex_global, NULL, 0);
735 if (PL_op->op_flags & OPf_STACKED)
737 else if (PL_op->op_private & OPpTARGET_MY)
743 TARG = sv_newmortal();
748 /* Lvalue operators. */
760 dVAR; dSP; dMARK; dTARGET; dORIGMARK;
762 do_chop(TARG, *++MARK);
771 SETi(do_chomp(TOPs));
777 dVAR; dSP; dMARK; dTARGET;
778 register I32 count = 0;
781 count += do_chomp(POPs);
791 if (!PL_op->op_private) {
800 SV_CHECK_THINKFIRST_COW_DROP(sv);
802 switch (SvTYPE(sv)) {
812 if (cv_const_sv((CV*)sv) && ckWARN(WARN_MISC))
813 Perl_warner(aTHX_ packWARN(WARN_MISC), "Constant subroutine %s undefined",
814 CvANON((CV*)sv) ? "(anonymous)" : GvENAME(CvGV((CV*)sv)));
818 /* let user-undef'd sub keep its identity */
819 GV* const gv = CvGV((CV*)sv);
826 SvSetMagicSV(sv, &PL_sv_undef);
832 if((stash = GvHV((GV*)sv)) && HvNAME_get(stash))
833 mro_isa_changed_in(stash);
834 /* undef *Pkg::meth_name ... */
835 else if(GvCVu((GV*)sv) && (stash = GvSTASH((GV*)sv)) && HvNAME_get(stash))
836 mro_method_changed_in(stash);
840 GvGP(sv) = gp_ref(gp);
842 GvLINE(sv) = CopLINE(PL_curcop);
848 if (SvTYPE(sv) >= SVt_PV && SvPVX_const(sv) && SvLEN(sv)) {
863 if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV)
864 DIE(aTHX_ PL_no_modify);
865 if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)
866 && SvIVX(TOPs) != IV_MIN)
868 SvIV_set(TOPs, SvIVX(TOPs) - 1);
869 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
880 if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV)
881 DIE(aTHX_ PL_no_modify);
882 sv_setsv(TARG, TOPs);
883 if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)
884 && SvIVX(TOPs) != IV_MAX)
886 SvIV_set(TOPs, SvIVX(TOPs) + 1);
887 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
892 /* special case for undef: see thread at 2003-03/msg00536.html in archive */
902 if (SvTYPE(TOPs) >= SVt_PVGV && SvTYPE(TOPs) != SVt_PVLV)
903 DIE(aTHX_ PL_no_modify);
904 sv_setsv(TARG, TOPs);
905 if (!SvREADONLY(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)
906 && SvIVX(TOPs) != IV_MIN)
908 SvIV_set(TOPs, SvIVX(TOPs) - 1);
909 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
918 /* Ordinary operators. */
922 dVAR; dSP; dATARGET; SV *svl, *svr;
923 #ifdef PERL_PRESERVE_IVUV
926 tryAMAGICbin(pow,opASSIGN);
927 svl = sv_2num(TOPm1s);
929 #ifdef PERL_PRESERVE_IVUV
930 /* For integer to integer power, we do the calculation by hand wherever
931 we're sure it is safe; otherwise we call pow() and try to convert to
932 integer afterwards. */
945 const IV iv = SvIVX(svr);
949 goto float_it; /* Can't do negative powers this way. */
953 baseuok = SvUOK(svl);
957 const IV iv = SvIVX(svl);
960 baseuok = TRUE; /* effectively it's a UV now */
962 baseuv = -iv; /* abs, baseuok == false records sign */
965 /* now we have integer ** positive integer. */
968 /* foo & (foo - 1) is zero only for a power of 2. */
969 if (!(baseuv & (baseuv - 1))) {
970 /* We are raising power-of-2 to a positive integer.
971 The logic here will work for any base (even non-integer
972 bases) but it can be less accurate than
973 pow (base,power) or exp (power * log (base)) when the
974 intermediate values start to spill out of the mantissa.
975 With powers of 2 we know this can't happen.
976 And powers of 2 are the favourite thing for perl
977 programmers to notice ** not doing what they mean. */
979 NV base = baseuok ? baseuv : -(NV)baseuv;
984 while (power >>= 1) {
995 register unsigned int highbit = 8 * sizeof(UV);
996 register unsigned int diff = 8 * sizeof(UV);
999 if (baseuv >> highbit) {
1003 /* we now have baseuv < 2 ** highbit */
1004 if (power * highbit <= 8 * sizeof(UV)) {
1005 /* result will definitely fit in UV, so use UV math
1006 on same algorithm as above */
1007 register UV result = 1;
1008 register UV base = baseuv;
1009 const bool odd_power = (bool)(power & 1);
1013 while (power >>= 1) {
1020 if (baseuok || !odd_power)
1021 /* answer is positive */
1023 else if (result <= (UV)IV_MAX)
1024 /* answer negative, fits in IV */
1025 SETi( -(IV)result );
1026 else if (result == (UV)IV_MIN)
1027 /* 2's complement assumption: special case IV_MIN */
1030 /* answer negative, doesn't fit */
1031 SETn( -(NV)result );
1041 NV right = SvNV(svr);
1042 NV left = SvNV(svl);
1045 #if defined(USE_LONG_DOUBLE) && defined(HAS_AIX_POWL_NEG_BASE_BUG)
1047 We are building perl with long double support and are on an AIX OS
1048 afflicted with a powl() function that wrongly returns NaNQ for any
1049 negative base. This was reported to IBM as PMR #23047-379 on
1050 03/06/2006. The problem exists in at least the following versions
1051 of AIX and the libm fileset, and no doubt others as well:
1053 AIX 4.3.3-ML10 bos.adt.libm 4.3.3.50
1054 AIX 5.1.0-ML04 bos.adt.libm 5.1.0.29
1055 AIX 5.2.0 bos.adt.libm 5.2.0.85
1057 So, until IBM fixes powl(), we provide the following workaround to
1058 handle the problem ourselves. Our logic is as follows: for
1059 negative bases (left), we use fmod(right, 2) to check if the
1060 exponent is an odd or even integer:
1062 - if odd, powl(left, right) == -powl(-left, right)
1063 - if even, powl(left, right) == powl(-left, right)
1065 If the exponent is not an integer, the result is rightly NaNQ, so
1066 we just return that (as NV_NAN).
1070 NV mod2 = Perl_fmod( right, 2.0 );
1071 if (mod2 == 1.0 || mod2 == -1.0) { /* odd integer */
1072 SETn( -Perl_pow( -left, right) );
1073 } else if (mod2 == 0.0) { /* even integer */
1074 SETn( Perl_pow( -left, right) );
1075 } else { /* fractional power */
1079 SETn( Perl_pow( left, right) );
1082 SETn( Perl_pow( left, right) );
1083 #endif /* HAS_AIX_POWL_NEG_BASE_BUG */
1085 #ifdef PERL_PRESERVE_IVUV
1095 dVAR; dSP; dATARGET; SV *svl, *svr;
1096 tryAMAGICbin(mult,opASSIGN);
1097 svl = sv_2num(TOPm1s);
1098 svr = sv_2num(TOPs);
1099 #ifdef PERL_PRESERVE_IVUV
1102 /* Unless the left argument is integer in range we are going to have to
1103 use NV maths. Hence only attempt to coerce the right argument if
1104 we know the left is integer. */
1105 /* Left operand is defined, so is it IV? */
1108 bool auvok = SvUOK(svl);
1109 bool buvok = SvUOK(svr);
1110 const UV topmask = (~ (UV)0) << (4 * sizeof (UV));
1111 const UV botmask = ~((~ (UV)0) << (4 * sizeof (UV)));
1120 const IV aiv = SvIVX(svl);
1123 auvok = TRUE; /* effectively it's a UV now */
1125 alow = -aiv; /* abs, auvok == false records sign */
1131 const IV biv = SvIVX(svr);
1134 buvok = TRUE; /* effectively it's a UV now */
1136 blow = -biv; /* abs, buvok == false records sign */
1140 /* If this does sign extension on unsigned it's time for plan B */
1141 ahigh = alow >> (4 * sizeof (UV));
1143 bhigh = blow >> (4 * sizeof (UV));
1145 if (ahigh && bhigh) {
1147 /* eg 32 bit is at least 0x10000 * 0x10000 == 0x100000000
1148 which is overflow. Drop to NVs below. */
1149 } else if (!ahigh && !bhigh) {
1150 /* eg 32 bit is at most 0xFFFF * 0xFFFF == 0xFFFE0001
1151 so the unsigned multiply cannot overflow. */
1152 const UV product = alow * blow;
1153 if (auvok == buvok) {
1154 /* -ve * -ve or +ve * +ve gives a +ve result. */
1158 } else if (product <= (UV)IV_MIN) {
1159 /* 2s complement assumption that (UV)-IV_MIN is correct. */
1160 /* -ve result, which could overflow an IV */
1162 SETi( -(IV)product );
1164 } /* else drop to NVs below. */
1166 /* One operand is large, 1 small */
1169 /* swap the operands */
1171 bhigh = blow; /* bhigh now the temp var for the swap */
1175 /* now, ((ahigh * blow) << half_UV_len) + (alow * blow)
1176 multiplies can't overflow. shift can, add can, -ve can. */
1177 product_middle = ahigh * blow;
1178 if (!(product_middle & topmask)) {
1179 /* OK, (ahigh * blow) won't lose bits when we shift it. */
1181 product_middle <<= (4 * sizeof (UV));
1182 product_low = alow * blow;
1184 /* as for pp_add, UV + something mustn't get smaller.
1185 IIRC ANSI mandates this wrapping *behaviour* for
1186 unsigned whatever the actual representation*/
1187 product_low += product_middle;
1188 if (product_low >= product_middle) {
1189 /* didn't overflow */
1190 if (auvok == buvok) {
1191 /* -ve * -ve or +ve * +ve gives a +ve result. */
1193 SETu( product_low );
1195 } else if (product_low <= (UV)IV_MIN) {
1196 /* 2s complement assumption again */
1197 /* -ve result, which could overflow an IV */
1199 SETi( -(IV)product_low );
1201 } /* else drop to NVs below. */
1203 } /* product_middle too large */
1204 } /* ahigh && bhigh */
1209 NV right = SvNV(svr);
1210 NV left = SvNV(svl);
1212 SETn( left * right );
1219 dVAR; dSP; dATARGET; SV *svl, *svr;
1220 tryAMAGICbin(div,opASSIGN);
1221 svl = sv_2num(TOPm1s);
1222 svr = sv_2num(TOPs);
1223 /* Only try to do UV divide first
1224 if ((SLOPPYDIVIDE is true) or
1225 (PERL_PRESERVE_IVUV is true and one or both SV is a UV too large
1227 The assumption is that it is better to use floating point divide
1228 whenever possible, only doing integer divide first if we can't be sure.
1229 If NV_PRESERVES_UV is true then we know at compile time that no UV
1230 can be too large to preserve, so don't need to compile the code to
1231 test the size of UVs. */
1234 # define PERL_TRY_UV_DIVIDE
1235 /* ensure that 20./5. == 4. */
1237 # ifdef PERL_PRESERVE_IVUV
1238 # ifndef NV_PRESERVES_UV
1239 # define PERL_TRY_UV_DIVIDE
1244 #ifdef PERL_TRY_UV_DIVIDE
1249 bool left_non_neg = SvUOK(svl);
1250 bool right_non_neg = SvUOK(svr);
1254 if (right_non_neg) {
1258 const IV biv = SvIVX(svr);
1261 right_non_neg = TRUE; /* effectively it's a UV now */
1267 /* historically undef()/0 gives a "Use of uninitialized value"
1268 warning before dieing, hence this test goes here.
1269 If it were immediately before the second SvIV_please, then
1270 DIE() would be invoked before left was even inspected, so
1271 no inpsection would give no warning. */
1273 DIE(aTHX_ "Illegal division by zero");
1279 const IV aiv = SvIVX(svl);
1282 left_non_neg = TRUE; /* effectively it's a UV now */
1291 /* For sloppy divide we always attempt integer division. */
1293 /* Otherwise we only attempt it if either or both operands
1294 would not be preserved by an NV. If both fit in NVs
1295 we fall through to the NV divide code below. However,
1296 as left >= right to ensure integer result here, we know that
1297 we can skip the test on the right operand - right big
1298 enough not to be preserved can't get here unless left is
1301 && (left > ((UV)1 << NV_PRESERVES_UV_BITS))
1304 /* Integer division can't overflow, but it can be imprecise. */
1305 const UV result = left / right;
1306 if (result * right == left) {
1307 SP--; /* result is valid */
1308 if (left_non_neg == right_non_neg) {
1309 /* signs identical, result is positive. */
1313 /* 2s complement assumption */
1314 if (result <= (UV)IV_MIN)
1315 SETi( -(IV)result );
1317 /* It's exact but too negative for IV. */
1318 SETn( -(NV)result );
1321 } /* tried integer divide but it was not an integer result */
1322 } /* else (PERL_ABS(result) < 1.0) or (both UVs in range for NV) */
1323 } /* left wasn't SvIOK */
1324 } /* right wasn't SvIOK */
1325 #endif /* PERL_TRY_UV_DIVIDE */
1327 NV right = SvNV(svr);
1328 NV left = SvNV(svl);
1329 (void)POPs;(void)POPs;
1330 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
1331 if (! Perl_isnan(right) && right == 0.0)
1335 DIE(aTHX_ "Illegal division by zero");
1336 PUSHn( left / right );
1343 dVAR; dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
1347 bool left_neg = FALSE;
1348 bool right_neg = FALSE;
1349 bool use_double = FALSE;
1350 bool dright_valid = FALSE;
1354 SV * const svr = sv_2num(TOPs);
1357 right_neg = !SvUOK(svr);
1361 const IV biv = SvIVX(svr);
1364 right_neg = FALSE; /* effectively it's a UV now */
1372 right_neg = dright < 0;
1375 if (dright < UV_MAX_P1) {
1376 right = U_V(dright);
1377 dright_valid = TRUE; /* In case we need to use double below. */
1384 /* At this point use_double is only true if right is out of range for
1385 a UV. In range NV has been rounded down to nearest UV and
1386 use_double false. */
1387 svl = sv_2num(TOPs);
1389 if (!use_double && SvIOK(svl)) {
1391 left_neg = !SvUOK(svl);
1395 const IV aiv = SvIVX(svl);
1398 left_neg = FALSE; /* effectively it's a UV now */
1407 left_neg = dleft < 0;
1411 /* This should be exactly the 5.6 behaviour - if left and right are
1412 both in range for UV then use U_V() rather than floor. */
1414 if (dleft < UV_MAX_P1) {
1415 /* right was in range, so is dleft, so use UVs not double.
1419 /* left is out of range for UV, right was in range, so promote
1420 right (back) to double. */
1422 /* The +0.5 is used in 5.6 even though it is not strictly
1423 consistent with the implicit +0 floor in the U_V()
1424 inside the #if 1. */
1425 dleft = Perl_floor(dleft + 0.5);
1428 dright = Perl_floor(dright + 0.5);
1439 DIE(aTHX_ "Illegal modulus zero");
1441 dans = Perl_fmod(dleft, dright);
1442 if ((left_neg != right_neg) && dans)
1443 dans = dright - dans;
1446 sv_setnv(TARG, dans);
1452 DIE(aTHX_ "Illegal modulus zero");
1455 if ((left_neg != right_neg) && ans)
1458 /* XXX may warn: unary minus operator applied to unsigned type */
1459 /* could change -foo to be (~foo)+1 instead */
1460 if (ans <= ~((UV)IV_MAX)+1)
1461 sv_setiv(TARG, ~ans+1);
1463 sv_setnv(TARG, -(NV)ans);
1466 sv_setuv(TARG, ans);
1475 dVAR; dSP; dATARGET; tryAMAGICbin(repeat,opASSIGN);
1482 const UV uv = SvUV(sv);
1484 count = IV_MAX; /* The best we can do? */
1488 const IV iv = SvIV(sv);
1495 else if (SvNOKp(sv)) {
1496 const NV nv = SvNV(sv);
1504 if (GIMME == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) {
1506 static const char oom_list_extend[] = "Out of memory during list extend";
1507 const I32 items = SP - MARK;
1508 const I32 max = items * count;
1510 MEM_WRAP_CHECK_1(max, SV*, oom_list_extend);
1511 /* Did the max computation overflow? */
1512 if (items > 0 && max > 0 && (max < items || max < count))
1513 Perl_croak(aTHX_ oom_list_extend);
1518 /* This code was intended to fix 20010809.028:
1521 for (($x =~ /./g) x 2) {
1522 print chop; # "abcdabcd" expected as output.
1525 * but that change (#11635) broke this code:
1527 $x = [("foo")x2]; # only one "foo" ended up in the anonlist.
1529 * I can't think of a better fix that doesn't introduce
1530 * an efficiency hit by copying the SVs. The stack isn't
1531 * refcounted, and mortalisation obviously doesn't
1532 * Do The Right Thing when the stack has more than
1533 * one pointer to the same mortal value.
1537 *SP = sv_2mortal(newSVsv(*SP));
1547 repeatcpy((char*)(MARK + items), (char*)MARK,
1548 items * sizeof(SV*), count - 1);
1551 else if (count <= 0)
1554 else { /* Note: mark already snarfed by pp_list */
1555 SV * const tmpstr = POPs;
1558 static const char oom_string_extend[] =
1559 "Out of memory during string extend";
1561 SvSetSV(TARG, tmpstr);
1562 SvPV_force(TARG, len);
1563 isutf = DO_UTF8(TARG);
1568 const STRLEN max = (UV)count * len;
1569 if (len > MEM_SIZE_MAX / count)
1570 Perl_croak(aTHX_ oom_string_extend);
1571 MEM_WRAP_CHECK_1(max, char, oom_string_extend);
1572 SvGROW(TARG, max + 1);
1573 repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
1574 SvCUR_set(TARG, SvCUR(TARG) * count);
1576 *SvEND(TARG) = '\0';
1579 (void)SvPOK_only_UTF8(TARG);
1581 (void)SvPOK_only(TARG);
1583 if (PL_op->op_private & OPpREPEAT_DOLIST) {
1584 /* The parser saw this as a list repeat, and there
1585 are probably several items on the stack. But we're
1586 in scalar context, and there's no pp_list to save us
1587 now. So drop the rest of the items -- robin@kitsite.com
1600 dVAR; dSP; dATARGET; bool useleft; SV *svl, *svr;
1601 tryAMAGICbin(subtr,opASSIGN);
1602 svl = sv_2num(TOPm1s);
1603 svr = sv_2num(TOPs);
1604 useleft = USE_LEFT(svl);
1605 #ifdef PERL_PRESERVE_IVUV
1606 /* See comments in pp_add (in pp_hot.c) about Overflow, and how
1607 "bad things" happen if you rely on signed integers wrapping. */
1610 /* Unless the left argument is integer in range we are going to have to
1611 use NV maths. Hence only attempt to coerce the right argument if
1612 we know the left is integer. */
1613 register UV auv = 0;
1619 a_valid = auvok = 1;
1620 /* left operand is undef, treat as zero. */
1622 /* Left operand is defined, so is it IV? */
1625 if ((auvok = SvUOK(svl)))
1628 register const IV aiv = SvIVX(svl);
1631 auvok = 1; /* Now acting as a sign flag. */
1632 } else { /* 2s complement assumption for IV_MIN */
1640 bool result_good = 0;
1643 bool buvok = SvUOK(svr);
1648 register const IV biv = SvIVX(svr);
1655 /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve,
1656 else "IV" now, independent of how it came in.
1657 if a, b represents positive, A, B negative, a maps to -A etc
1662 all UV maths. negate result if A negative.
1663 subtract if signs same, add if signs differ. */
1665 if (auvok ^ buvok) {
1674 /* Must get smaller */
1679 if (result <= buv) {
1680 /* result really should be -(auv-buv). as its negation
1681 of true value, need to swap our result flag */
1693 if (result <= (UV)IV_MIN)
1694 SETi( -(IV)result );
1696 /* result valid, but out of range for IV. */
1697 SETn( -(NV)result );
1701 } /* Overflow, drop through to NVs. */
1706 NV value = SvNV(svr);
1710 /* left operand is undef, treat as zero - value */
1714 SETn( SvNV(svl) - value );
1721 dVAR; dSP; dATARGET; tryAMAGICbin(lshift,opASSIGN);
1723 const IV shift = POPi;
1724 if (PL_op->op_private & HINT_INTEGER) {
1738 dVAR; dSP; dATARGET; tryAMAGICbin(rshift,opASSIGN);
1740 const IV shift = POPi;
1741 if (PL_op->op_private & HINT_INTEGER) {
1755 dVAR; dSP; tryAMAGICbinSET(lt,0);
1756 #ifdef PERL_PRESERVE_IVUV
1759 SvIV_please(TOPm1s);
1760 if (SvIOK(TOPm1s)) {
1761 bool auvok = SvUOK(TOPm1s);
1762 bool buvok = SvUOK(TOPs);
1764 if (!auvok && !buvok) { /* ## IV < IV ## */
1765 const IV aiv = SvIVX(TOPm1s);
1766 const IV biv = SvIVX(TOPs);
1769 SETs(boolSV(aiv < biv));
1772 if (auvok && buvok) { /* ## UV < UV ## */
1773 const UV auv = SvUVX(TOPm1s);
1774 const UV buv = SvUVX(TOPs);
1777 SETs(boolSV(auv < buv));
1780 if (auvok) { /* ## UV < IV ## */
1782 const IV biv = SvIVX(TOPs);
1785 /* As (a) is a UV, it's >=0, so it cannot be < */
1790 SETs(boolSV(auv < (UV)biv));
1793 { /* ## IV < UV ## */
1794 const IV aiv = SvIVX(TOPm1s);
1798 /* As (b) is a UV, it's >=0, so it must be < */
1805 SETs(boolSV((UV)aiv < buv));
1811 #ifndef NV_PRESERVES_UV
1812 #ifdef PERL_PRESERVE_IVUV
1815 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
1817 SETs(boolSV(SvRV(TOPs) < SvRV(TOPp1s)));
1822 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
1824 if (Perl_isnan(left) || Perl_isnan(right))
1826 SETs(boolSV(left < right));
1829 SETs(boolSV(TOPn < value));
1837 dVAR; dSP; tryAMAGICbinSET(gt,0);
1838 #ifdef PERL_PRESERVE_IVUV
1841 SvIV_please(TOPm1s);
1842 if (SvIOK(TOPm1s)) {
1843 bool auvok = SvUOK(TOPm1s);
1844 bool buvok = SvUOK(TOPs);
1846 if (!auvok && !buvok) { /* ## IV > IV ## */
1847 const IV aiv = SvIVX(TOPm1s);
1848 const IV biv = SvIVX(TOPs);
1851 SETs(boolSV(aiv > biv));
1854 if (auvok && buvok) { /* ## UV > UV ## */
1855 const UV auv = SvUVX(TOPm1s);
1856 const UV buv = SvUVX(TOPs);
1859 SETs(boolSV(auv > buv));
1862 if (auvok) { /* ## UV > IV ## */
1864 const IV biv = SvIVX(TOPs);
1868 /* As (a) is a UV, it's >=0, so it must be > */
1873 SETs(boolSV(auv > (UV)biv));
1876 { /* ## IV > UV ## */
1877 const IV aiv = SvIVX(TOPm1s);
1881 /* As (b) is a UV, it's >=0, so it cannot be > */
1888 SETs(boolSV((UV)aiv > buv));
1894 #ifndef NV_PRESERVES_UV
1895 #ifdef PERL_PRESERVE_IVUV
1898 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
1900 SETs(boolSV(SvRV(TOPs) > SvRV(TOPp1s)));
1905 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
1907 if (Perl_isnan(left) || Perl_isnan(right))
1909 SETs(boolSV(left > right));
1912 SETs(boolSV(TOPn > value));
1920 dVAR; dSP; tryAMAGICbinSET(le,0);
1921 #ifdef PERL_PRESERVE_IVUV
1924 SvIV_please(TOPm1s);
1925 if (SvIOK(TOPm1s)) {
1926 bool auvok = SvUOK(TOPm1s);
1927 bool buvok = SvUOK(TOPs);
1929 if (!auvok && !buvok) { /* ## IV <= IV ## */
1930 const IV aiv = SvIVX(TOPm1s);
1931 const IV biv = SvIVX(TOPs);
1934 SETs(boolSV(aiv <= biv));
1937 if (auvok && buvok) { /* ## UV <= UV ## */
1938 UV auv = SvUVX(TOPm1s);
1939 UV buv = SvUVX(TOPs);
1942 SETs(boolSV(auv <= buv));
1945 if (auvok) { /* ## UV <= IV ## */
1947 const IV biv = SvIVX(TOPs);
1951 /* As (a) is a UV, it's >=0, so a cannot be <= */
1956 SETs(boolSV(auv <= (UV)biv));
1959 { /* ## IV <= UV ## */
1960 const IV aiv = SvIVX(TOPm1s);
1964 /* As (b) is a UV, it's >=0, so a must be <= */
1971 SETs(boolSV((UV)aiv <= buv));
1977 #ifndef NV_PRESERVES_UV
1978 #ifdef PERL_PRESERVE_IVUV
1981 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
1983 SETs(boolSV(SvRV(TOPs) <= SvRV(TOPp1s)));
1988 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
1990 if (Perl_isnan(left) || Perl_isnan(right))
1992 SETs(boolSV(left <= right));
1995 SETs(boolSV(TOPn <= value));
2003 dVAR; dSP; tryAMAGICbinSET(ge,0);
2004 #ifdef PERL_PRESERVE_IVUV
2007 SvIV_please(TOPm1s);
2008 if (SvIOK(TOPm1s)) {
2009 bool auvok = SvUOK(TOPm1s);
2010 bool buvok = SvUOK(TOPs);
2012 if (!auvok && !buvok) { /* ## IV >= IV ## */
2013 const IV aiv = SvIVX(TOPm1s);
2014 const IV biv = SvIVX(TOPs);
2017 SETs(boolSV(aiv >= biv));
2020 if (auvok && buvok) { /* ## UV >= UV ## */
2021 const UV auv = SvUVX(TOPm1s);
2022 const UV buv = SvUVX(TOPs);
2025 SETs(boolSV(auv >= buv));
2028 if (auvok) { /* ## UV >= IV ## */
2030 const IV biv = SvIVX(TOPs);
2034 /* As (a) is a UV, it's >=0, so it must be >= */
2039 SETs(boolSV(auv >= (UV)biv));
2042 { /* ## IV >= UV ## */
2043 const IV aiv = SvIVX(TOPm1s);
2047 /* As (b) is a UV, it's >=0, so a cannot be >= */
2054 SETs(boolSV((UV)aiv >= buv));
2060 #ifndef NV_PRESERVES_UV
2061 #ifdef PERL_PRESERVE_IVUV
2064 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
2066 SETs(boolSV(SvRV(TOPs) >= SvRV(TOPp1s)));
2071 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
2073 if (Perl_isnan(left) || Perl_isnan(right))
2075 SETs(boolSV(left >= right));
2078 SETs(boolSV(TOPn >= value));
2086 dVAR; dSP; tryAMAGICbinSET(ne,0);
2087 #ifndef NV_PRESERVES_UV
2088 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
2090 SETs(boolSV(SvRV(TOPs) != SvRV(TOPp1s)));
2094 #ifdef PERL_PRESERVE_IVUV
2097 SvIV_please(TOPm1s);
2098 if (SvIOK(TOPm1s)) {
2099 const bool auvok = SvUOK(TOPm1s);
2100 const bool buvok = SvUOK(TOPs);
2102 if (auvok == buvok) { /* ## IV == IV or UV == UV ## */
2103 /* Casting IV to UV before comparison isn't going to matter
2104 on 2s complement. On 1s complement or sign&magnitude
2105 (if we have any of them) it could make negative zero
2106 differ from normal zero. As I understand it. (Need to
2107 check - is negative zero implementation defined behaviour
2109 const UV buv = SvUVX(POPs);
2110 const UV auv = SvUVX(TOPs);
2112 SETs(boolSV(auv != buv));
2115 { /* ## Mixed IV,UV ## */
2119 /* != is commutative so swap if needed (save code) */
2121 /* swap. top of stack (b) is the iv */
2125 /* As (a) is a UV, it's >0, so it cannot be == */
2134 /* As (b) is a UV, it's >0, so it cannot be == */
2138 uv = SvUVX(*(SP+1)); /* Do I want TOPp1s() ? */
2140 SETs(boolSV((UV)iv != uv));
2147 #if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
2149 if (Perl_isnan(left) || Perl_isnan(right))
2151 SETs(boolSV(left != right));
2154 SETs(boolSV(TOPn != value));
2162 dVAR; dSP; dTARGET; tryAMAGICbin(ncmp,0);
2163 #ifndef NV_PRESERVES_UV
2164 if (SvROK(TOPs) && !SvAMAGIC(TOPs) && SvROK(TOPm1s) && !SvAMAGIC(TOPm1s)) {
2165 const UV right = PTR2UV(SvRV(POPs));
2166 const UV left = PTR2UV(SvRV(TOPs));
2167 SETi((left > right) - (left < right));
2171 #ifdef PERL_PRESERVE_IVUV
2172 /* Fortunately it seems NaN isn't IOK */
2175 SvIV_please(TOPm1s);
2176 if (SvIOK(TOPm1s)) {
2177 const bool leftuvok = SvUOK(TOPm1s);
2178 const bool rightuvok = SvUOK(TOPs);
2180 if (!leftuvok && !rightuvok) { /* ## IV <=> IV ## */
2181 const IV leftiv = SvIVX(TOPm1s);
2182 const IV rightiv = SvIVX(TOPs);
2184 if (leftiv > rightiv)
2186 else if (leftiv < rightiv)
2190 } else if (leftuvok && rightuvok) { /* ## UV <=> UV ## */
2191 const UV leftuv = SvUVX(TOPm1s);
2192 const UV rightuv = SvUVX(TOPs);
2194 if (leftuv > rightuv)
2196 else if (leftuv < rightuv)
2200 } else if (leftuvok) { /* ## UV <=> IV ## */
2201 const IV rightiv = SvIVX(TOPs);
2203 /* As (a) is a UV, it's >=0, so it cannot be < */
2206 const UV leftuv = SvUVX(TOPm1s);
2207 if (leftuv > (UV)rightiv) {
2209 } else if (leftuv < (UV)rightiv) {
2215 } else { /* ## IV <=> UV ## */
2216 const IV leftiv = SvIVX(TOPm1s);
2218 /* As (b) is a UV, it's >=0, so it must be < */
2221 const UV rightuv = SvUVX(TOPs);
2222 if ((UV)leftiv > rightuv) {
2224 } else if ((UV)leftiv < rightuv) {
2242 if (Perl_isnan(left) || Perl_isnan(right)) {
2246 value = (left > right) - (left < right);
2250 else if (left < right)
2252 else if (left > right)
2268 int amg_type = sle_amg;
2272 switch (PL_op->op_type) {
2291 tryAMAGICbinSET_var(amg_type,0);
2294 const int cmp = (IN_LOCALE_RUNTIME
2295 ? sv_cmp_locale(left, right)
2296 : sv_cmp(left, right));
2297 SETs(boolSV(cmp * multiplier < rhs));
2304 dVAR; dSP; tryAMAGICbinSET(seq,0);
2307 SETs(boolSV(sv_eq(left, right)));
2314 dVAR; dSP; tryAMAGICbinSET(sne,0);
2317 SETs(boolSV(!sv_eq(left, right)));
2324 dVAR; dSP; dTARGET; tryAMAGICbin(scmp,0);
2327 const int cmp = (IN_LOCALE_RUNTIME
2328 ? sv_cmp_locale(left, right)
2329 : sv_cmp(left, right));
2337 dVAR; dSP; dATARGET; tryAMAGICbin(band,opASSIGN);
2342 if (SvNIOKp(left) || SvNIOKp(right)) {
2343 if (PL_op->op_private & HINT_INTEGER) {
2344 const IV i = SvIV_nomg(left) & SvIV_nomg(right);
2348 const UV u = SvUV_nomg(left) & SvUV_nomg(right);
2353 do_vop(PL_op->op_type, TARG, left, right);
2362 dVAR; dSP; dATARGET;
2363 const int op_type = PL_op->op_type;
2365 tryAMAGICbin_var((op_type == OP_BIT_OR ? bor_amg : bxor_amg), opASSIGN);
2370 if (SvNIOKp(left) || SvNIOKp(right)) {
2371 if (PL_op->op_private & HINT_INTEGER) {
2372 const IV l = (USE_LEFT(left) ? SvIV_nomg(left) : 0);
2373 const IV r = SvIV_nomg(right);
2374 const IV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r);
2378 const UV l = (USE_LEFT(left) ? SvUV_nomg(left) : 0);
2379 const UV r = SvUV_nomg(right);
2380 const UV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r);
2385 do_vop(op_type, TARG, left, right);
2394 dVAR; dSP; dTARGET; tryAMAGICun(neg);
2396 SV * const sv = sv_2num(TOPs);
2397 const int flags = SvFLAGS(sv);
2399 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
2400 /* It's publicly an integer, or privately an integer-not-float */
2403 if (SvIVX(sv) == IV_MIN) {
2404 /* 2s complement assumption. */
2405 SETi(SvIVX(sv)); /* special case: -((UV)IV_MAX+1) == IV_MIN */
2408 else if (SvUVX(sv) <= IV_MAX) {
2413 else if (SvIVX(sv) != IV_MIN) {
2417 #ifdef PERL_PRESERVE_IVUV
2426 else if (SvPOKp(sv)) {
2428 const char * const s = SvPV_const(sv, len);
2429 if (isIDFIRST(*s)) {
2430 sv_setpvn(TARG, "-", 1);
2433 else if (*s == '+' || *s == '-') {
2435 *SvPV_force(TARG, len) = *s == '-' ? '+' : '-';
2437 else if (DO_UTF8(sv)) {
2440 goto oops_its_an_int;
2442 sv_setnv(TARG, -SvNV(sv));
2444 sv_setpvn(TARG, "-", 1);
2451 goto oops_its_an_int;
2452 sv_setnv(TARG, -SvNV(sv));
2464 dVAR; dSP; tryAMAGICunSET(not);
2465 *PL_stack_sp = boolSV(!SvTRUE(*PL_stack_sp));
2471 dVAR; dSP; dTARGET; tryAMAGICun(compl);
2476 if (PL_op->op_private & HINT_INTEGER) {
2477 const IV i = ~SvIV_nomg(sv);
2481 const UV u = ~SvUV_nomg(sv);
2490 (void)SvPV_nomg_const(sv,len); /* force check for uninit var */
2491 sv_setsv_nomg(TARG, sv);
2492 tmps = (U8*)SvPV_force(TARG, len);
2495 /* Calculate exact length, let's not estimate. */
2500 U8 * const send = tmps + len;
2501 U8 * const origtmps = tmps;
2502 const UV utf8flags = UTF8_ALLOW_ANYUV;
2504 while (tmps < send) {
2505 const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2507 targlen += UNISKIP(~c);
2513 /* Now rewind strings and write them. */
2520 Newx(result, targlen + 1, U8);
2522 while (tmps < send) {
2523 const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2525 p = uvchr_to_utf8_flags(p, ~c, UNICODE_ALLOW_ANY);
2528 sv_usepvn_flags(TARG, (char*)result, targlen,
2529 SV_HAS_TRAILING_NUL);
2536 Newx(result, nchar + 1, U8);
2538 while (tmps < send) {
2539 const U8 c = (U8)utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2544 sv_usepvn_flags(TARG, (char*)result, nchar, SV_HAS_TRAILING_NUL);
2552 register long *tmpl;
2553 for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++)
2556 for ( ; anum >= (I32)sizeof(long); anum -= (I32)sizeof(long), tmpl++)
2561 for ( ; anum > 0; anum--, tmps++)
2570 /* integer versions of some of the above */
2574 dVAR; dSP; dATARGET; tryAMAGICbin(mult,opASSIGN);
2577 SETi( left * right );
2585 dVAR; dSP; dATARGET; tryAMAGICbin(div,opASSIGN);
2589 DIE(aTHX_ "Illegal division by zero");
2592 /* avoid FPE_INTOVF on some platforms when num is IV_MIN */
2596 value = num / value;
2602 #if defined(__GLIBC__) && IVSIZE == 8
2609 /* This is the vanilla old i_modulo. */
2610 dVAR; dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
2614 DIE(aTHX_ "Illegal modulus zero");
2615 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2619 SETi( left % right );
2624 #if defined(__GLIBC__) && IVSIZE == 8
2629 /* This is the i_modulo with the workaround for the _moddi3 bug
2630 * in (at least) glibc 2.2.5 (the PERL_ABS() the workaround).
2631 * See below for pp_i_modulo. */
2632 dVAR; dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
2636 DIE(aTHX_ "Illegal modulus zero");
2637 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2641 SETi( left % PERL_ABS(right) );
2648 dVAR; dSP; dATARGET; tryAMAGICbin(modulo,opASSIGN);
2652 DIE(aTHX_ "Illegal modulus zero");
2653 /* The assumption is to use hereafter the old vanilla version... */
2655 PL_ppaddr[OP_I_MODULO] =
2657 /* .. but if we have glibc, we might have a buggy _moddi3
2658 * (at least glicb 2.2.5 is known to have this bug), in other
2659 * words our integer modulus with negative quad as the second
2660 * argument might be broken. Test for this and re-patch the
2661 * opcode dispatch table if that is the case, remembering to
2662 * also apply the workaround so that this first round works
2663 * right, too. See [perl #9402] for more information. */
2667 /* Cannot do this check with inlined IV constants since
2668 * that seems to work correctly even with the buggy glibc. */
2670 /* Yikes, we have the bug.
2671 * Patch in the workaround version. */
2673 PL_ppaddr[OP_I_MODULO] =
2674 &Perl_pp_i_modulo_1;
2675 /* Make certain we work right this time, too. */
2676 right = PERL_ABS(right);
2679 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2683 SETi( left % right );
2691 dVAR; dSP; dATARGET; tryAMAGICbin(add,opASSIGN);
2694 SETi( left + right );
2701 dVAR; dSP; dATARGET; tryAMAGICbin(subtr,opASSIGN);
2704 SETi( left - right );
2711 dVAR; dSP; tryAMAGICbinSET(lt,0);
2714 SETs(boolSV(left < right));
2721 dVAR; dSP; tryAMAGICbinSET(gt,0);
2724 SETs(boolSV(left > right));
2731 dVAR; dSP; tryAMAGICbinSET(le,0);
2734 SETs(boolSV(left <= right));
2741 dVAR; dSP; tryAMAGICbinSET(ge,0);
2744 SETs(boolSV(left >= right));
2751 dVAR; dSP; tryAMAGICbinSET(eq,0);
2754 SETs(boolSV(left == right));
2761 dVAR; dSP; tryAMAGICbinSET(ne,0);
2764 SETs(boolSV(left != right));
2771 dVAR; dSP; dTARGET; tryAMAGICbin(ncmp,0);
2778 else if (left < right)
2789 dVAR; dSP; dTARGET; tryAMAGICun(neg);
2794 /* High falutin' math. */
2798 dVAR; dSP; dTARGET; tryAMAGICbin(atan2,0);
2801 SETn(Perl_atan2(left, right));
2809 int amg_type = sin_amg;
2810 const char *neg_report = NULL;
2811 NV (*func)(NV) = Perl_sin;
2812 const int op_type = PL_op->op_type;
2829 amg_type = sqrt_amg;
2831 neg_report = "sqrt";
2835 tryAMAGICun_var(amg_type);
2837 const NV value = POPn;
2839 if (op_type == OP_LOG ? (value <= 0.0) : (value < 0.0)) {
2840 SET_NUMERIC_STANDARD();
2841 DIE(aTHX_ "Can't take %s of %"NVgf, neg_report, value);
2844 XPUSHn(func(value));
2849 /* Support Configure command-line overrides for rand() functions.
2850 After 5.005, perhaps we should replace this by Configure support
2851 for drand48(), random(), or rand(). For 5.005, though, maintain
2852 compatibility by calling rand() but allow the user to override it.
2853 See INSTALL for details. --Andy Dougherty 15 July 1998
2855 /* Now it's after 5.005, and Configure supports drand48() and random(),
2856 in addition to rand(). So the overrides should not be needed any more.
2857 --Jarkko Hietaniemi 27 September 1998
2860 #ifndef HAS_DRAND48_PROTO
2861 extern double drand48 (void);
2874 if (!PL_srand_called) {
2875 (void)seedDrand01((Rand_seed_t)seed());
2876 PL_srand_called = TRUE;
2886 const UV anum = (MAXARG < 1) ? seed() : POPu;
2887 (void)seedDrand01((Rand_seed_t)anum);
2888 PL_srand_called = TRUE;
2895 dVAR; dSP; dTARGET; tryAMAGICun(int);
2897 SV * const sv = sv_2num(TOPs);
2898 const IV iv = SvIV(sv);
2899 /* XXX it's arguable that compiler casting to IV might be subtly
2900 different from modf (for numbers inside (IV_MIN,UV_MAX)) in which
2901 else preferring IV has introduced a subtle behaviour change bug. OTOH
2902 relying on floating point to be accurate is a bug. */
2907 else if (SvIOK(sv)) {
2914 const NV value = SvNV(sv);
2916 if (value < (NV)UV_MAX + 0.5) {
2919 SETn(Perl_floor(value));
2923 if (value > (NV)IV_MIN - 0.5) {
2926 SETn(Perl_ceil(value));
2936 dVAR; dSP; dTARGET; tryAMAGICun(abs);
2938 SV * const sv = sv_2num(TOPs);
2939 /* This will cache the NV value if string isn't actually integer */
2940 const IV iv = SvIV(sv);
2945 else if (SvIOK(sv)) {
2946 /* IVX is precise */
2948 SETu(SvUV(sv)); /* force it to be numeric only */
2956 /* 2s complement assumption. Also, not really needed as
2957 IV_MIN and -IV_MIN should both be %100...00 and NV-able */
2963 const NV value = SvNV(sv);
2977 I32 flags = PERL_SCAN_ALLOW_UNDERSCORES;
2981 SV* const sv = POPs;
2983 tmps = (SvPV_const(sv, len));
2985 /* If Unicode, try to downgrade
2986 * If not possible, croak. */
2987 SV* const tsv = sv_2mortal(newSVsv(sv));
2990 sv_utf8_downgrade(tsv, FALSE);
2991 tmps = SvPV_const(tsv, len);
2993 if (PL_op->op_type == OP_HEX)
2996 while (*tmps && len && isSPACE(*tmps))
3002 result_uv = grok_hex (tmps, &len, &flags, &result_nv);
3004 else if (*tmps == 'b')
3005 result_uv = grok_bin (tmps, &len, &flags, &result_nv);
3007 result_uv = grok_oct (tmps, &len, &flags, &result_nv);
3009 if (flags & PERL_SCAN_GREATER_THAN_UV_MAX) {
3023 SV * const sv = TOPs;
3025 if (SvGAMAGIC(sv)) {
3026 /* For an overloaded or magic scalar, we can't know in advance if
3027 it's going to be UTF-8 or not. Also, we can't call sv_len_utf8 as
3028 it likes to cache the length. Maybe that should be a documented
3033 = sv_2pv_flags(sv, &len,
3034 SV_UNDEF_RETURNS_NULL|SV_CONST_RETURN|SV_GMAGIC);
3038 else if (DO_UTF8(sv)) {
3039 SETi(utf8_length((U8*)p, (U8*)p + len));
3043 } else if (SvOK(sv)) {
3044 /* Neither magic nor overloaded. */
3046 SETi(sv_len_utf8(sv));
3065 const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
3067 const I32 arybase = CopARYBASE_get(PL_curcop);
3069 const char *repl = NULL;
3071 const int num_args = PL_op->op_private & 7;
3072 bool repl_need_utf8_upgrade = FALSE;
3073 bool repl_is_utf8 = FALSE;
3075 SvTAINTED_off(TARG); /* decontaminate */
3076 SvUTF8_off(TARG); /* decontaminate */
3080 repl = SvPV_const(repl_sv, repl_len);
3081 repl_is_utf8 = DO_UTF8(repl_sv) && SvCUR(repl_sv);
3091 sv_utf8_upgrade(sv);
3093 else if (DO_UTF8(sv))
3094 repl_need_utf8_upgrade = TRUE;
3096 tmps = SvPV_const(sv, curlen);
3098 utf8_curlen = sv_len_utf8(sv);
3099 if (utf8_curlen == curlen)
3102 curlen = utf8_curlen;
3107 if (pos >= arybase) {
3125 else if (len >= 0) {
3127 if (rem > (I32)curlen)
3142 Perl_croak(aTHX_ "substr outside of string");
3143 if (ckWARN(WARN_SUBSTR))
3144 Perl_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string");
3148 const I32 upos = pos;
3149 const I32 urem = rem;
3151 sv_pos_u2b(sv, &pos, &rem);
3153 /* we either return a PV or an LV. If the TARG hasn't been used
3154 * before, or is of that type, reuse it; otherwise use a mortal
3155 * instead. Note that LVs can have an extended lifetime, so also
3156 * dont reuse if refcount > 1 (bug #20933) */
3157 if (SvTYPE(TARG) > SVt_NULL) {
3158 if ( (SvTYPE(TARG) == SVt_PVLV)
3159 ? (!lvalue || SvREFCNT(TARG) > 1)
3162 TARG = sv_newmortal();
3166 sv_setpvn(TARG, tmps, rem);
3167 #ifdef USE_LOCALE_COLLATE
3168 sv_unmagic(TARG, PERL_MAGIC_collxfrm);
3173 SV* repl_sv_copy = NULL;
3175 if (repl_need_utf8_upgrade) {
3176 repl_sv_copy = newSVsv(repl_sv);
3177 sv_utf8_upgrade(repl_sv_copy);
3178 repl = SvPV_const(repl_sv_copy, repl_len);
3179 repl_is_utf8 = DO_UTF8(repl_sv_copy) && SvCUR(sv);
3181 sv_insert(sv, pos, rem, repl, repl_len);
3185 SvREFCNT_dec(repl_sv_copy);
3187 else if (lvalue) { /* it's an lvalue! */
3188 if (!SvGMAGICAL(sv)) {
3190 SvPV_force_nolen(sv);
3191 if (ckWARN(WARN_SUBSTR))
3192 Perl_warner(aTHX_ packWARN(WARN_SUBSTR),
3193 "Attempt to use reference as lvalue in substr");
3195 if (isGV_with_GP(sv))
3196 SvPV_force_nolen(sv);
3197 else if (SvOK(sv)) /* is it defined ? */
3198 (void)SvPOK_only_UTF8(sv);
3200 sv_setpvn(sv,"",0); /* avoid lexical reincarnation */
3203 if (SvTYPE(TARG) < SVt_PVLV) {
3204 sv_upgrade(TARG, SVt_PVLV);
3205 sv_magic(TARG, NULL, PERL_MAGIC_substr, NULL, 0);
3209 if (LvTARG(TARG) != sv) {
3211 SvREFCNT_dec(LvTARG(TARG));
3212 LvTARG(TARG) = SvREFCNT_inc_simple(sv);
3214 LvTARGOFF(TARG) = upos;
3215 LvTARGLEN(TARG) = urem;
3219 PUSHs(TARG); /* avoid SvSETMAGIC here */
3226 register const IV size = POPi;
3227 register const IV offset = POPi;
3228 register SV * const src = POPs;
3229 const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
3231 SvTAINTED_off(TARG); /* decontaminate */
3232 if (lvalue) { /* it's an lvalue! */
3233 if (SvREFCNT(TARG) > 1) /* don't share the TARG (#20933) */
3234 TARG = sv_newmortal();
3235 if (SvTYPE(TARG) < SVt_PVLV) {
3236 sv_upgrade(TARG, SVt_PVLV);
3237 sv_magic(TARG, NULL, PERL_MAGIC_vec, NULL, 0);
3240 if (LvTARG(TARG) != src) {
3242 SvREFCNT_dec(LvTARG(TARG));
3243 LvTARG(TARG) = SvREFCNT_inc_simple(src);
3245 LvTARGOFF(TARG) = offset;
3246 LvTARGLEN(TARG) = size;
3249 sv_setuv(TARG, do_vecget(src, offset, size));
3265 const char *little_p;
3266 const I32 arybase = CopARYBASE_get(PL_curcop);
3269 const bool is_index = PL_op->op_type == OP_INDEX;
3272 /* arybase is in characters, like offset, so combine prior to the
3273 UTF-8 to bytes calculation. */
3274 offset = POPi - arybase;
3278 big_p = SvPV_const(big, biglen);
3279 little_p = SvPV_const(little, llen);
3281 big_utf8 = DO_UTF8(big);
3282 little_utf8 = DO_UTF8(little);
3283 if (big_utf8 ^ little_utf8) {
3284 /* One needs to be upgraded. */
3285 if (little_utf8 && !PL_encoding) {
3286 /* Well, maybe instead we might be able to downgrade the small
3288 char * const pv = (char*)bytes_from_utf8((U8 *)little_p, &llen,
3291 /* If the large string is ISO-8859-1, and it's not possible to
3292 convert the small string to ISO-8859-1, then there is no
3293 way that it could be found anywhere by index. */
3298 /* At this point, pv is a malloc()ed string. So donate it to temp
3299 to ensure it will get free()d */
3300 little = temp = newSV(0);
3301 sv_usepvn(temp, pv, llen);
3302 little_p = SvPVX(little);
3305 ? newSVpvn(big_p, biglen) : newSVpvn(little_p, llen);
3308 sv_recode_to_utf8(temp, PL_encoding);
3310 sv_utf8_upgrade(temp);
3315 big_p = SvPV_const(big, biglen);
3318 little_p = SvPV_const(little, llen);
3322 if (SvGAMAGIC(big)) {
3323 /* Life just becomes a lot easier if I use a temporary here.
3324 Otherwise I need to avoid calls to sv_pos_u2b(), which (dangerously)
3325 will trigger magic and overloading again, as will fbm_instr()
3327 big = newSVpvn_flags(big_p, biglen,
3328 SVs_TEMP | (big_utf8 ? SVf_UTF8 : 0));
3331 if (SvGAMAGIC(little) || (is_index && !SvOK(little))) {
3332 /* index && SvOK() is a hack. fbm_instr() calls SvPV_const, which will
3333 warn on undef, and we've already triggered a warning with the
3334 SvPV_const some lines above. We can't remove that, as we need to
3335 call some SvPV to trigger overloading early and find out if the
3337 This is all getting to messy. The API isn't quite clean enough,
3338 because data access has side effects.
3340 little = newSVpvn_flags(little_p, llen,
3341 SVs_TEMP | (little_utf8 ? SVf_UTF8 : 0));
3342 little_p = SvPVX(little);
3346 offset = is_index ? 0 : biglen;
3348 if (big_utf8 && offset > 0)
3349 sv_pos_u2b(big, &offset, 0);
3355 else if (offset > (I32)biglen)
3357 if (!(little_p = is_index
3358 ? fbm_instr((unsigned char*)big_p + offset,
3359 (unsigned char*)big_p + biglen, little, 0)
3360 : rninstr(big_p, big_p + offset,
3361 little_p, little_p + llen)))
3364 retval = little_p - big_p;
3365 if (retval > 0 && big_utf8)
3366 sv_pos_b2u(big, &retval);
3371 PUSHi(retval + arybase);
3377 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
3378 if (SvTAINTED(MARK[1]))
3379 TAINT_PROPER("sprintf");
3380 do_sprintf(TARG, SP-MARK, MARK+1);
3381 TAINT_IF(SvTAINTED(TARG));
3393 const U8 *s = (U8*)SvPV_const(argsv, len);
3395 if (PL_encoding && SvPOK(argsv) && !DO_UTF8(argsv)) {
3396 SV * const tmpsv = sv_2mortal(newSVsv(argsv));
3397 s = (U8*)sv_recode_to_utf8(tmpsv, PL_encoding);
3401 XPUSHu(DO_UTF8(argsv) ?
3402 utf8n_to_uvchr(s, UTF8_MAXBYTES, 0, UTF8_ALLOW_ANYUV) :
3414 if (((SvIOK_notUV(TOPs) && SvIV(TOPs) < 0)
3416 (SvNOK(TOPs) && SvNV(TOPs) < 0.0))) {
3418 value = POPu; /* chr(-1) eq chr(0xff), etc. */
3420 (void) POPs; /* Ignore the argument value. */
3421 value = UNICODE_REPLACEMENT;
3427 SvUPGRADE(TARG,SVt_PV);
3429 if (value > 255 && !IN_BYTES) {
3430 SvGROW(TARG, (STRLEN)UNISKIP(value)+1);
3431 tmps = (char*)uvchr_to_utf8_flags((U8*)SvPVX(TARG), value, 0);
3432 SvCUR_set(TARG, tmps - SvPVX_const(TARG));
3434 (void)SvPOK_only(TARG);
3443 *tmps++ = (char)value;
3445 (void)SvPOK_only(TARG);
3447 if (PL_encoding && !IN_BYTES) {
3448 sv_recode_to_utf8(TARG, PL_encoding);
3450 if (SvCUR(TARG) == 0 || !is_utf8_string((U8*)tmps, SvCUR(TARG)) ||
3451 UNICODE_IS_REPLACEMENT(utf8_to_uvchr((U8*)tmps, NULL))) {
3455 *tmps++ = (char)value;
3471 const char *tmps = SvPV_const(left, len);
3473 if (DO_UTF8(left)) {
3474 /* If Unicode, try to downgrade.
3475 * If not possible, croak.
3476 * Yes, we made this up. */
3477 SV* const tsv = sv_2mortal(newSVsv(left));
3480 sv_utf8_downgrade(tsv, FALSE);
3481 tmps = SvPV_const(tsv, len);
3483 # ifdef USE_ITHREADS
3485 if (!PL_reentrant_buffer->_crypt_struct_buffer) {
3486 /* This should be threadsafe because in ithreads there is only
3487 * one thread per interpreter. If this would not be true,
3488 * we would need a mutex to protect this malloc. */
3489 PL_reentrant_buffer->_crypt_struct_buffer =
3490 (struct crypt_data *)safemalloc(sizeof(struct crypt_data));
3491 #if defined(__GLIBC__) || defined(__EMX__)
3492 if (PL_reentrant_buffer->_crypt_struct_buffer) {
3493 PL_reentrant_buffer->_crypt_struct_buffer->initialized = 0;
3494 /* work around glibc-2.2.5 bug */
3495 PL_reentrant_buffer->_crypt_struct_buffer->current_saltbits = 0;
3499 # endif /* HAS_CRYPT_R */
3500 # endif /* USE_ITHREADS */
3502 sv_setpv(TARG, fcrypt(tmps, SvPV_nolen_const(right)));
3504 sv_setpv(TARG, PerlProc_crypt(tmps, SvPV_nolen_const(right)));
3510 "The crypt() function is unimplemented due to excessive paranoia.");
3522 bool inplace = TRUE;
3524 const int op_type = PL_op->op_type;
3527 U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
3533 s = (const U8*)SvPV_nomg_const(source, slen);
3535 if (ckWARN(WARN_UNINITIALIZED))
3536 report_uninit(source);
3541 if (slen && DO_UTF8(source) && UTF8_IS_START(*s)) {
3543 utf8_to_uvchr(s, &ulen);
3544 if (op_type == OP_UCFIRST) {
3545 toTITLE_utf8(s, tmpbuf, &tculen);
3547 toLOWER_utf8(s, tmpbuf, &tculen);
3549 /* If the two differ, we definately cannot do inplace. */
3550 inplace = (ulen == tculen);
3551 need = slen + 1 - ulen + tculen;
3557 if (SvPADTMP(source) && !SvREADONLY(source) && inplace && SvTEMP(source)) {
3558 /* We can convert in place. */
3561 s = d = (U8*)SvPV_force_nomg(source, slen);
3567 SvUPGRADE(dest, SVt_PV);
3568 d = (U8*)SvGROW(dest, need);
3569 (void)SvPOK_only(dest);
3578 /* slen is the byte length of the whole SV.
3579 * ulen is the byte length of the original Unicode character
3580 * stored as UTF-8 at s.
3581 * tculen is the byte length of the freshly titlecased (or
3582 * lowercased) Unicode character stored as UTF-8 at tmpbuf.
3583 * We first set the result to be the titlecased (/lowercased)
3584 * character, and then append the rest of the SV data. */
3585 sv_setpvn(dest, (char*)tmpbuf, tculen);
3587 sv_catpvn(dest, (char*)(s + ulen), slen - ulen);
3591 Copy(tmpbuf, d, tculen, U8);
3592 SvCUR_set(dest, need - 1);
3597 if (IN_LOCALE_RUNTIME) {
3600 *d = (op_type == OP_UCFIRST)
3601 ? toUPPER_LC(*s) : toLOWER_LC(*s);
3604 *d = (op_type == OP_UCFIRST) ? toUPPER(*s) : toLOWER(*s);
3606 /* See bug #39028 */
3614 /* This will copy the trailing NUL */
3615 Copy(s + 1, d + 1, slen, U8);
3616 SvCUR_set(dest, need - 1);
3623 /* There's so much setup/teardown code common between uc and lc, I wonder if
3624 it would be worth merging the two, and just having a switch outside each
3625 of the three tight loops. */
3639 if (SvPADTMP(source) && !SvREADONLY(source) && !SvAMAGIC(source)
3640 && SvTEMP(source) && !DO_UTF8(source)) {
3641 /* We can convert in place. */
3644 s = d = (U8*)SvPV_force_nomg(source, len);
3651 /* The old implementation would copy source into TARG at this point.
3652 This had the side effect that if source was undef, TARG was now
3653 an undefined SV with PADTMP set, and they don't warn inside
3654 sv_2pv_flags(). However, we're now getting the PV direct from
3655 source, which doesn't have PADTMP set, so it would warn. Hence the
3659 s = (const U8*)SvPV_nomg_const(source, len);
3661 if (ckWARN(WARN_UNINITIALIZED))
3662 report_uninit(source);
3668 SvUPGRADE(dest, SVt_PV);
3669 d = (U8*)SvGROW(dest, min);
3670 (void)SvPOK_only(dest);
3675 /* Overloaded values may have toggled the UTF-8 flag on source, so we need
3676 to check DO_UTF8 again here. */
3678 if (DO_UTF8(source)) {
3679 const U8 *const send = s + len;
3680 U8 tmpbuf[UTF8_MAXBYTES+1];
3683 const STRLEN u = UTF8SKIP(s);
3686 toUPPER_utf8(s, tmpbuf, &ulen);
3687 if (ulen > u && (SvLEN(dest) < (min += ulen - u))) {
3688 /* If the eventually required minimum size outgrows
3689 * the available space, we need to grow. */
3690 const UV o = d - (U8*)SvPVX_const(dest);
3692 /* If someone uppercases one million U+03B0s we SvGROW() one
3693 * million times. Or we could try guessing how much to
3694 allocate without allocating too much. Such is life. */
3696 d = (U8*)SvPVX(dest) + o;
3698 Copy(tmpbuf, d, ulen, U8);
3704 SvCUR_set(dest, d - (U8*)SvPVX_const(dest));
3707 const U8 *const send = s + len;
3708 if (IN_LOCALE_RUNTIME) {
3711 for (; s < send; d++, s++)
3712 *d = toUPPER_LC(*s);
3715 for (; s < send; d++, s++)
3719 if (source != dest) {
3721 SvCUR_set(dest, d - (U8*)SvPVX_const(dest));
3741 if (SvPADTMP(source) && !SvREADONLY(source) && !SvAMAGIC(source)
3742 && SvTEMP(source) && !DO_UTF8(source)) {
3743 /* We can convert in place. */
3746 s = d = (U8*)SvPV_force_nomg(source, len);
3753 /* The old implementation would copy source into TARG at this point.
3754 This had the side effect that if source was undef, TARG was now
3755 an undefined SV with PADTMP set, and they don't warn inside
3756 sv_2pv_flags(). However, we're now getting the PV direct from
3757 source, which doesn't have PADTMP set, so it would warn. Hence the
3761 s = (const U8*)SvPV_nomg_const(source, len);
3763 if (ckWARN(WARN_UNINITIALIZED))
3764 report_uninit(source);
3770 SvUPGRADE(dest, SVt_PV);
3771 d = (U8*)SvGROW(dest, min);
3772 (void)SvPOK_only(dest);
3777 /* Overloaded values may have toggled the UTF-8 flag on source, so we need
3778 to check DO_UTF8 again here. */
3780 if (DO_UTF8(source)) {
3781 const U8 *const send = s + len;
3782 U8 tmpbuf[UTF8_MAXBYTES_CASE+1];
3785 const STRLEN u = UTF8SKIP(s);
3787 const UV uv = toLOWER_utf8(s, tmpbuf, &ulen);
3789 #define GREEK_CAPITAL_LETTER_SIGMA 0x03A3 /* Unicode U+03A3 */
3790 if (uv == GREEK_CAPITAL_LETTER_SIGMA) {
3793 * Now if the sigma is NOT followed by
3794 * /$ignorable_sequence$cased_letter/;
3795 * and it IS preceded by /$cased_letter$ignorable_sequence/;
3796 * where $ignorable_sequence is [\x{2010}\x{AD}\p{Mn}]*
3797 * and $cased_letter is [\p{Ll}\p{Lo}\p{Lt}]
3798 * then it should be mapped to 0x03C2,
3799 * (GREEK SMALL LETTER FINAL SIGMA),
3800 * instead of staying 0x03A3.
3801 * "should be": in other words, this is not implemented yet.
3802 * See lib/unicore/SpecialCasing.txt.
3805 if (ulen > u && (SvLEN(dest) < (min += ulen - u))) {
3806 /* If the eventually required minimum size outgrows
3807 * the available space, we need to grow. */
3808 const UV o = d - (U8*)SvPVX_const(dest);
3810 /* If someone lowercases one million U+0130s we SvGROW() one
3811 * million times. Or we could try guessing how much to
3812 allocate without allocating too much. Such is life. */
3814 d = (U8*)SvPVX(dest) + o;
3816 Copy(tmpbuf, d, ulen, U8);
3822 SvCUR_set(dest, d - (U8*)SvPVX_const(dest));
3825 const U8 *const send = s + len;
3826 if (IN_LOCALE_RUNTIME) {
3829 for (; s < send; d++, s++)
3830 *d = toLOWER_LC(*s);
3833 for (; s < send; d++, s++)
3837 if (source != dest) {
3839 SvCUR_set(dest, d - (U8*)SvPVX_const(dest));
3849 SV * const sv = TOPs;
3851 register const char *s = SvPV_const(sv,len);
3853 SvUTF8_off(TARG); /* decontaminate */
3856 SvUPGRADE(TARG, SVt_PV);
3857 SvGROW(TARG, (len * 2) + 1);
3861 if (UTF8_IS_CONTINUED(*s)) {
3862 STRLEN ulen = UTF8SKIP(s);
3886 SvCUR_set(TARG, d - SvPVX_const(TARG));
3887 (void)SvPOK_only_UTF8(TARG);
3890 sv_setpvn(TARG, s, len);
3892 if (SvSMAGICAL(TARG))
3901 dVAR; dSP; dMARK; dORIGMARK;
3902 register AV* const av = (AV*)POPs;
3903 register const I32 lval = (PL_op->op_flags & OPf_MOD || LVRET);
3905 if (SvTYPE(av) == SVt_PVAV) {
3906 const I32 arybase = CopARYBASE_get(PL_curcop);
3907 if (lval && PL_op->op_private & OPpLVAL_INTRO) {
3910 for (svp = MARK + 1; svp <= SP; svp++) {
3911 const I32 elem = SvIV(*svp);
3915 if (max > AvMAX(av))
3918 while (++MARK <= SP) {
3920 I32 elem = SvIV(*MARK);
3924 svp = av_fetch(av, elem, lval);
3926 if (!svp || *svp == &PL_sv_undef)
3927 DIE(aTHX_ PL_no_aelem, elem);
3928 if (PL_op->op_private & OPpLVAL_INTRO)
3929 save_aelem(av, elem, svp);
3931 *MARK = svp ? *svp : &PL_sv_undef;
3934 if (GIMME != G_ARRAY) {
3936 *++MARK = SP > ORIGMARK ? *SP : &PL_sv_undef;
3946 AV *array = (AV*)POPs;
3947 const I32 gimme = GIMME_V;
3948 IV *iterp = Perl_av_iter_p(aTHX_ array);
3949 const IV current = (*iterp)++;
3951 if (current > av_len(array)) {
3953 if (gimme == G_SCALAR)
3960 mPUSHi(CopARYBASE_get(PL_curcop) + current);
3961 if (gimme == G_ARRAY) {
3962 SV **const element = av_fetch(array, current, 0);
3963 PUSHs(element ? *element : &PL_sv_undef);
3972 AV *array = (AV*)POPs;
3973 const I32 gimme = GIMME_V;
3975 *Perl_av_iter_p(aTHX_ array) = 0;
3977 if (gimme == G_SCALAR) {
3979 PUSHi(av_len(array) + 1);
3981 else if (gimme == G_ARRAY) {
3982 IV n = Perl_av_len(aTHX_ array);
3983 IV i = CopARYBASE_get(PL_curcop);
3987 if (PL_op->op_type == OP_AKEYS) {
3989 for (; i <= n; i++) {
3994 for (i = 0; i <= n; i++) {
3995 SV *const *const elem = Perl_av_fetch(aTHX_ array, i, 0);
3996 PUSHs(elem ? *elem : &PL_sv_undef);
4003 /* Associative arrays. */
4009 HV * hash = (HV*)POPs;
4011 const I32 gimme = GIMME_V;
4014 /* might clobber stack_sp */
4015 entry = hv_iternext(hash);
4020 SV* const sv = hv_iterkeysv(entry);
4021 PUSHs(sv); /* won't clobber stack_sp */
4022 if (gimme == G_ARRAY) {
4025 /* might clobber stack_sp */
4026 val = hv_iterval(hash, entry);
4031 else if (gimme == G_SCALAR)
4041 const I32 gimme = GIMME_V;
4042 const I32 discard = (gimme == G_VOID) ? G_DISCARD : 0;
4044 if (PL_op->op_private & OPpSLICE) {
4046 HV * const hv = (HV*)POPs;
4047 const U32 hvtype = SvTYPE(hv);
4048 if (hvtype == SVt_PVHV) { /* hash element */
4049 while (++MARK <= SP) {
4050 SV * const sv = hv_delete_ent(hv, *MARK, discard, 0);
4051 *MARK = sv ? sv : &PL_sv_undef;
4054 else if (hvtype == SVt_PVAV) { /* array element */
4055 if (PL_op->op_flags & OPf_SPECIAL) {
4056 while (++MARK <= SP) {
4057 SV * const sv = av_delete((AV*)hv, SvIV(*MARK), discard);
4058 *MARK = sv ? sv : &PL_sv_undef;
4063 DIE(aTHX_ "Not a HASH reference");
4066 else if (gimme == G_SCALAR) {
4071 *++MARK = &PL_sv_undef;
4077 HV * const hv = (HV*)POPs;
4079 if (SvTYPE(hv) == SVt_PVHV)
4080 sv = hv_delete_ent(hv, keysv, discard, 0);
4081 else if (SvTYPE(hv) == SVt_PVAV) {
4082 if (PL_op->op_flags & OPf_SPECIAL)
4083 sv = av_delete((AV*)hv, SvIV(keysv), discard);
4085 DIE(aTHX_ "panic: avhv_delete no longer supported");
4088 DIE(aTHX_ "Not a HASH reference");
4104 if (PL_op->op_private & OPpEXISTS_SUB) {
4106 SV * const sv = POPs;
4107 CV * const cv = sv_2cv(sv, &hv, &gv, 0);
4110 if (gv && isGV(gv) && GvCV(gv) && !GvCVGEN(gv))
4116 if (SvTYPE(hv) == SVt_PVHV) {
4117 if (hv_exists_ent(hv, tmpsv, 0))
4120 else if (SvTYPE(hv) == SVt_PVAV) {
4121 if (PL_op->op_flags & OPf_SPECIAL) { /* array element */
4122 if (av_exists((AV*)hv, SvIV(tmpsv)))
4127 DIE(aTHX_ "Not a HASH reference");
4134 dVAR; dSP; dMARK; dORIGMARK;
4135 register HV * const hv = (HV*)POPs;
4136 register const I32 lval = (PL_op->op_flags & OPf_MOD || LVRET);
4137 const bool localizing = PL_op->op_private & OPpLVAL_INTRO;
4138 bool other_magic = FALSE;
4144 other_magic = mg_find((SV*)hv, PERL_MAGIC_env) ||
4145 ((mg = mg_find((SV*)hv, PERL_MAGIC_tied))
4146 /* Try to preserve the existenceness of a tied hash
4147 * element by using EXISTS and DELETE if possible.
4148 * Fallback to FETCH and STORE otherwise */
4149 && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg))))
4150 && gv_fetchmethod_autoload(stash, "EXISTS", TRUE)
4151 && gv_fetchmethod_autoload(stash, "DELETE", TRUE));
4154 while (++MARK <= SP) {
4155 SV * const keysv = *MARK;
4158 bool preeminent = FALSE;
4161 preeminent = SvRMAGICAL(hv) && !other_magic ? 1 :
4162 hv_exists_ent(hv, keysv, 0);
4165 he = hv_fetch_ent(hv, keysv, lval, 0);
4166 svp = he ? &HeVAL(he) : NULL;
4169 if (!svp || *svp == &PL_sv_undef) {
4170 DIE(aTHX_ PL_no_helem_sv, SVfARG(keysv));
4173 if (HvNAME_get(hv) && isGV(*svp))
4174 save_gp((GV*)*svp, !(PL_op->op_flags & OPf_SPECIAL));
4177 save_helem(hv, keysv, svp);
4180 const char * const key = SvPV_const(keysv, keylen);
4181 SAVEDELETE(hv, savepvn(key,keylen),
4182 SvUTF8(keysv) ? -(I32)keylen : (I32)keylen);
4187 *MARK = svp ? *svp : &PL_sv_undef;
4189 if (GIMME != G_ARRAY) {
4191 *++MARK = SP > ORIGMARK ? *SP : &PL_sv_undef;
4197 /* List operators. */
4202 if (GIMME != G_ARRAY) {
4204 *MARK = *SP; /* unwanted list, return last item */
4206 *MARK = &PL_sv_undef;
4216 SV ** const lastrelem = PL_stack_sp;
4217 SV ** const lastlelem = PL_stack_base + POPMARK;
4218 SV ** const firstlelem = PL_stack_base + POPMARK + 1;
4219 register SV ** const firstrelem = lastlelem + 1;
4220 const I32 arybase = CopARYBASE_get(PL_curcop);
4221 I32 is_something_there = FALSE;
4223 register const I32 max = lastrelem - lastlelem;
4224 register SV **lelem;
4226 if (GIMME != G_ARRAY) {
4227 I32 ix = SvIV(*lastlelem);
4232 if (ix < 0 || ix >= max)
4233 *firstlelem = &PL_sv_undef;
4235 *firstlelem = firstrelem[ix];
4241 SP = firstlelem - 1;
4245 for (lelem = firstlelem; lelem <= lastlelem; lelem++) {
4246 I32 ix = SvIV(*lelem);
4251 if (ix < 0 || ix >= max)
4252 *lelem = &PL_sv_undef;
4254 is_something_there = TRUE;
4255 if (!(*lelem = firstrelem[ix]))
4256 *lelem = &PL_sv_undef;
4259 if (is_something_there)
4262 SP = firstlelem - 1;
4268 dVAR; dSP; dMARK; dORIGMARK;
4269 const I32 items = SP - MARK;
4270 SV * const av = (SV *) av_make(items, MARK+1);
4271 SP = ORIGMARK; /* av_make() might realloc stack_sp */
4272 mXPUSHs((PL_op->op_flags & OPf_SPECIAL)
4273 ? newRV_noinc(av) : av);
4279 dVAR; dSP; dMARK; dORIGMARK;
4280 HV* const hv = newHV();
4283 SV * const key = *++MARK;
4284 SV * const val = newSV(0);
4286 sv_setsv(val, *++MARK);
4287 else if (ckWARN(WARN_MISC))
4288 Perl_warner(aTHX_ packWARN(WARN_MISC), "Odd number of elements in anonymous hash");
4289 (void)hv_store_ent(hv,key,val,0);
4292 mXPUSHs((PL_op->op_flags & OPf_SPECIAL)
4293 ? newRV_noinc((SV*) hv) : (SV*) hv);
4299 dVAR; dSP; dMARK; dORIGMARK;
4300 register AV *ary = (AV*)*++MARK;
4304 register I32 offset;
4305 register I32 length;
4309 const MAGIC * const mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied);
4312 *MARK-- = SvTIED_obj((SV*)ary, mg);
4316 call_method("SPLICE",GIMME_V);
4325 offset = i = SvIV(*MARK);
4327 offset += AvFILLp(ary) + 1;
4329 offset -= CopARYBASE_get(PL_curcop);
4331 DIE(aTHX_ PL_no_aelem, i);
4333 length = SvIVx(*MARK++);
4335 length += AvFILLp(ary) - offset + 1;
4341 length = AvMAX(ary) + 1; /* close enough to infinity */
4345 length = AvMAX(ary) + 1;
4347 if (offset > AvFILLp(ary) + 1) {
4348 if (ckWARN(WARN_MISC))
4349 Perl_warner(aTHX_ packWARN(WARN_MISC), "splice() offset past end of array" );
4350 offset = AvFILLp(ary) + 1;
4352 after = AvFILLp(ary) + 1 - (offset + length);
4353 if (after < 0) { /* not that much array */
4354 length += after; /* offset+length now in array */
4360 /* At this point, MARK .. SP-1 is our new LIST */
4363 diff = newlen - length;
4364 if (newlen && !AvREAL(ary) && AvREIFY(ary))
4367 /* make new elements SVs now: avoid problems if they're from the array */
4368 for (dst = MARK, i = newlen; i; i--) {
4369 SV * const h = *dst;
4370 *dst++ = newSVsv(h);
4373 if (diff < 0) { /* shrinking the area */
4374 SV **tmparyval = NULL;
4376 Newx(tmparyval, newlen, SV*); /* so remember insertion */
4377 Copy(MARK, tmparyval, newlen, SV*);
4380 MARK = ORIGMARK + 1;
4381 if (GIMME == G_ARRAY) { /* copy return vals to stack */
4382 MEXTEND(MARK, length);
4383 Copy(AvARRAY(ary)+offset, MARK, length, SV*);
4385 EXTEND_MORTAL(length);
4386 for (i = length, dst = MARK; i; i--) {
4387 sv_2mortal(*dst); /* free them eventualy */
4394 *MARK = AvARRAY(ary)[offset+length-1];
4397 for (i = length - 1, dst = &AvARRAY(ary)[offset]; i > 0; i--)
4398 SvREFCNT_dec(*dst++); /* free them now */
4401 AvFILLp(ary) += diff;
4403 /* pull up or down? */
4405 if (offset < after) { /* easier to pull up */
4406 if (offset) { /* esp. if nothing to pull */
4407 src = &AvARRAY(ary)[offset-1];
4408 dst = src - diff; /* diff is negative */
4409 for (i = offset; i > 0; i--) /* can't trust Copy */
4413 AvARRAY(ary) = AvARRAY(ary) - diff; /* diff is negative */
4417 if (after) { /* anything to pull down? */
4418 src = AvARRAY(ary) + offset + length;
4419 dst = src + diff; /* diff is negative */
4420 Move(src, dst, after, SV*);
4422 dst = &AvARRAY(ary)[AvFILLp(ary)+1];
4423 /* avoid later double free */
4427 dst[--i] = &PL_sv_undef;
4430 Copy( tmparyval, AvARRAY(ary) + offset, newlen, SV* );
4431 Safefree(tmparyval);
4434 else { /* no, expanding (or same) */
4435 SV** tmparyval = NULL;
4437 Newx(tmparyval, length, SV*); /* so remember deletion */
4438 Copy(AvARRAY(ary)+offset, tmparyval, length, SV*);
4441 if (diff > 0) { /* expanding */
4442 /* push up or down? */
4443 if (offset < after && diff <= AvARRAY(ary) - AvALLOC(ary)) {
4447 Move(src, dst, offset, SV*);
4449 AvARRAY(ary) = AvARRAY(ary) - diff;/* diff is positive */
4451 AvFILLp(ary) += diff;
4454 if (AvFILLp(ary) + diff >= AvMAX(ary)) /* oh, well */
4455 av_extend(ary, AvFILLp(ary) + diff);
4456 AvFILLp(ary) += diff;
4459 dst = AvARRAY(ary) + AvFILLp(ary);
4461 for (i = after; i; i--) {
4469 Copy( MARK, AvARRAY(ary) + offset, newlen, SV* );
4472 MARK = ORIGMARK + 1;
4473 if (GIMME == G_ARRAY) { /* copy return vals to stack */
4475 Copy(tmparyval, MARK, length, SV*);
4477 EXTEND_MORTAL(length);
4478 for (i = length, dst = MARK; i; i--) {
4479 sv_2mortal(*dst); /* free them eventualy */
4486 else if (length--) {
4487 *MARK = tmparyval[length];
4490 while (length-- > 0)
4491 SvREFCNT_dec(tmparyval[length]);
4495 *MARK = &PL_sv_undef;
4496 Safefree(tmparyval);
4504 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4505 register AV * const ary = (AV*)*++MARK;
4506 const MAGIC * const mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied);
4509 *MARK-- = SvTIED_obj((SV*)ary, mg);
4513 call_method("PUSH",G_SCALAR|G_DISCARD);
4517 PUSHi( AvFILL(ary) + 1 );
4520 PL_delaymagic = DM_DELAY;
4521 for (++MARK; MARK <= SP; MARK++) {
4522 SV * const sv = newSV(0);
4524 sv_setsv(sv, *MARK);
4525 av_store(ary, AvFILLp(ary)+1, sv);
4527 if (PL_delaymagic & DM_ARRAY)
4532 PUSHi( AvFILLp(ary) + 1 );
4541 AV * const av = (AV*)POPs;
4542 SV * const sv = PL_op->op_type == OP_SHIFT ? av_shift(av) : av_pop(av);
4546 (void)sv_2mortal(sv);
4553 dVAR; dSP; dMARK; dORIGMARK; dTARGET;
4554 register AV *ary = (AV*)*++MARK;
4555 const MAGIC * const mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied);
4558 *MARK-- = SvTIED_obj((SV*)ary, mg);
4562 call_method("UNSHIFT",G_SCALAR|G_DISCARD);
4568 av_unshift(ary, SP - MARK);
4570 SV * const sv = newSVsv(*++MARK);
4571 (void)av_store(ary, i++, sv);
4575 PUSHi( AvFILL(ary) + 1 );
4582 SV ** const oldsp = SP;
4584 if (GIMME == G_ARRAY) {
4587 register SV * const tmp = *MARK;
4591 /* safe as long as stack cannot get extended in the above */
4596 register char *down;
4600 PADOFFSET padoff_du;
4602 SvUTF8_off(TARG); /* decontaminate */
4604 do_join(TARG, &PL_sv_no, MARK, SP);
4606 sv_setsv(TARG, (SP > MARK)
4608 : (padoff_du = find_rundefsvoffset(),
4609 (padoff_du == NOT_IN_PAD
4610 || PAD_COMPNAME_FLAGS_isOUR(padoff_du))
4611 ? DEFSV : PAD_SVl(padoff_du)));
4612 up = SvPV_force(TARG, len);
4614 if (DO_UTF8(TARG)) { /* first reverse each character */
4615 U8* s = (U8*)SvPVX(TARG);
4616 const U8* send = (U8*)(s + len);
4618 if (UTF8_IS_INVARIANT(*s)) {
4623 if (!utf8_to_uvchr(s, 0))
4627 down = (char*)(s - 1);
4628 /* reverse this character */
4632 *down-- = (char)tmp;
4638 down = SvPVX(TARG) + len - 1;
4642 *down-- = (char)tmp;
4644 (void)SvPOK_only_UTF8(TARG);
4656 register IV limit = POPi; /* note, negative is forever */
4657 SV * const sv = POPs;
4659 register const char *s = SvPV_const(sv, len);
4660 const bool do_utf8 = DO_UTF8(sv);
4661 const char *strend = s + len;
4663 register REGEXP *rx;
4665 register const char *m;
4667 const STRLEN slen = do_utf8 ? utf8_length((U8*)s, (U8*)strend) : (STRLEN)(strend - s);
4668 I32 maxiters = slen + 10;
4670 const I32 origlimit = limit;
4673 const I32 gimme = GIMME_V;
4674 const I32 oldsave = PL_savestack_ix;
4675 U32 make_mortal = SVs_TEMP;
4680 Copy(&LvTARGOFF(POPs), &pm, 1, PMOP*);
4685 DIE(aTHX_ "panic: pp_split");
4688 TAINT_IF((RX_EXTFLAGS(rx) & RXf_PMf_LOCALE) &&
4689 (RX_EXTFLAGS(rx) & (RXf_WHITE | RXf_SKIPWHITE)));
4691 RX_MATCH_UTF8_set(rx, do_utf8);
4694 if (pm->op_pmreplrootu.op_pmtargetoff) {
4695 ary = GvAVn((GV*)PAD_SVl(pm->op_pmreplrootu.op_pmtargetoff));
4698 if (pm->op_pmreplrootu.op_pmtargetgv) {
4699 ary = GvAVn(pm->op_pmreplrootu.op_pmtargetgv);
4702 else if (gimme != G_ARRAY)
4703 ary = GvAVn(PL_defgv);
4706 if (ary && (gimme != G_ARRAY || (pm->op_pmflags & PMf_ONCE))) {
4712 if ((mg = SvTIED_mg((SV*)ary, PERL_MAGIC_tied))) {
4714 XPUSHs(SvTIED_obj((SV*)ary, mg));
4721 for (i = AvFILLp(ary); i >= 0; i--)
4722 AvARRAY(ary)[i] = &PL_sv_undef; /* don't free mere refs */
4724 /* temporarily switch stacks */
4725 SAVESWITCHSTACK(PL_curstack, ary);
4729 base = SP - PL_stack_base;
4731 if (RX_EXTFLAGS(rx) & RXf_SKIPWHITE) {
4733 while (*s == ' ' || is_utf8_space((U8*)s))
4736 else if (RX_EXTFLAGS(rx) & RXf_PMf_LOCALE) {
4737 while (isSPACE_LC(*s))
4745 if (RX_EXTFLAGS(rx) & PMf_MULTILINE) {
4750 limit = maxiters + 2;
4751 if (RX_EXTFLAGS(rx) & RXf_WHITE) {
4754 /* this one uses 'm' and is a negative test */
4756 while (m < strend && !( *m == ' ' || is_utf8_space((U8*)m) )) {
4757 const int t = UTF8SKIP(m);
4758 /* is_utf8_space returns FALSE for malform utf8 */
4764 } else if (RX_EXTFLAGS(rx) & RXf_PMf_LOCALE) {
4765 while (m < strend && !isSPACE_LC(*m))
4768 while (m < strend && !isSPACE(*m))
4774 dstr = newSVpvn_flags(s, m-s,
4775 (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4778 /* skip the whitespace found last */
4780 s = m + UTF8SKIP(m);
4784 /* this one uses 's' and is a positive test */
4786 while (s < strend && ( *s == ' ' || is_utf8_space((U8*)s) ))
4788 } else if (RX_EXTFLAGS(rx) & RXf_PMf_LOCALE) {
4789 while (s < strend && isSPACE_LC(*s))
4792 while (s < strend && isSPACE(*s))
4797 else if (RX_EXTFLAGS(rx) & RXf_START_ONLY) {
4799 for (m = s; m < strend && *m != '\n'; m++)
4804 dstr = newSVpvn_flags(s, m-s,
4805 (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4810 else if (RX_EXTFLAGS(rx) & RXf_NULL && !(s >= strend)) {
4812 Pre-extend the stack, either the number of bytes or
4813 characters in the string or a limited amount, triggered by:
4815 my ($x, $y) = split //, $str;
4819 const U32 items = limit - 1;
4827 /* keep track of how many bytes we skip over */
4830 dstr = newSVpvn_flags(m, s-m, SVf_UTF8 | make_mortal);
4839 dstr = newSVpvn(s, 1);
4853 else if (do_utf8 == (RX_UTF8(rx) != 0) &&
4854 (RX_EXTFLAGS(rx) & RXf_USE_INTUIT) && !RX_NPARENS(rx)
4855 && (RX_EXTFLAGS(rx) & RXf_CHECK_ALL)
4856 && !(RX_EXTFLAGS(rx) & RXf_ANCH)) {
4857 const int tail = (RX_EXTFLAGS(rx) & RXf_INTUIT_TAIL);
4858 SV * const csv = CALLREG_INTUIT_STRING(rx);
4860 len = RX_MINLENRET(rx);
4861 if (len == 1 && !RX_UTF8(rx) && !tail) {
4862 const char c = *SvPV_nolen_const(csv);
4864 for (m = s; m < strend && *m != c; m++)
4868 dstr = newSVpvn_flags(s, m-s,
4869 (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4871 /* The rx->minlen is in characters but we want to step
4872 * s ahead by bytes. */
4874 s = (char*)utf8_hop((U8*)m, len);
4876 s = m + len; /* Fake \n at the end */
4880 while (s < strend && --limit &&
4881 (m = fbm_instr((unsigned char*)s, (unsigned char*)strend,
4882 csv, multiline ? FBMrf_MULTILINE : 0)) )
4884 dstr = newSVpvn_flags(s, m-s,
4885 (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4887 /* The rx->minlen is in characters but we want to step
4888 * s ahead by bytes. */
4890 s = (char*)utf8_hop((U8*)m, len);
4892 s = m + len; /* Fake \n at the end */
4897 maxiters += slen * RX_NPARENS(rx);
4898 while (s < strend && --limit)
4902 rex_return = CALLREGEXEC(rx, (char*)s, (char*)strend, (char*)orig, 1 ,
4905 if (rex_return == 0)
4907 TAINT_IF(RX_MATCH_TAINTED(rx));
4908 if (RX_MATCH_COPIED(rx) && RX_SUBBEG(rx) != orig) {
4911 orig = RX_SUBBEG(rx);
4913 strend = s + (strend - m);
4915 m = RX_OFFS(rx)[0].start + orig;
4916 dstr = newSVpvn_flags(s, m-s,
4917 (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4919 if (RX_NPARENS(rx)) {
4921 for (i = 1; i <= (I32)RX_NPARENS(rx); i++) {
4922 s = RX_OFFS(rx)[i].start + orig;
4923 m = RX_OFFS(rx)[i].end + orig;
4925 /* japhy (07/27/01) -- the (m && s) test doesn't catch
4926 parens that didn't match -- they should be set to
4927 undef, not the empty string */
4928 if (m >= orig && s >= orig) {
4929 dstr = newSVpvn_flags(s, m-s,
4930 (do_utf8 ? SVf_UTF8 : 0)
4934 dstr = &PL_sv_undef; /* undef, not "" */
4938 s = RX_OFFS(rx)[0].end + orig;
4942 iters = (SP - PL_stack_base) - base;
4943 if (iters > maxiters)
4944 DIE(aTHX_ "Split loop");
4946 /* keep field after final delim? */
4947 if (s < strend || (iters && origlimit)) {
4948 const STRLEN l = strend - s;
4949 dstr = newSVpvn_flags(s, l, (do_utf8 ? SVf_UTF8 : 0) | make_mortal);
4953 else if (!origlimit) {
4954 while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0)) {
4955 if (TOPs && !make_mortal)
4958 *SP-- = &PL_sv_undef;
4963 LEAVE_SCOPE(oldsave); /* may undo an earlier SWITCHSTACK */
4967 if (SvSMAGICAL(ary)) {
4972 if (gimme == G_ARRAY) {
4974 Copy(AvARRAY(ary), SP + 1, iters, SV*);
4982 call_method("PUSH",G_SCALAR|G_DISCARD);
4985 if (gimme == G_ARRAY) {
4987 /* EXTEND should not be needed - we just popped them */
4989 for (i=0; i < iters; i++) {
4990 SV **svp = av_fetch(ary, i, FALSE);
4991 PUSHs((svp) ? *svp : &PL_sv_undef);
4998 if (gimme == G_ARRAY)
5010 SV *const sv = PAD_SVl(PL_op->op_targ);
5012 if (SvPADSTALE(sv)) {
5015 RETURNOP(cLOGOP->op_other);
5017 RETURNOP(cLOGOP->op_next);
5027 if (SvTYPE(retsv) == SVt_PVAV || SvTYPE(retsv) == SVt_PVHV
5028 || SvTYPE(retsv) == SVt_PVCV) {
5029 retsv = refto(retsv);
5036 PP(unimplemented_op)
5039 DIE(aTHX_ "panic: unimplemented op %s (#%d) called", OP_NAME(PL_op),
5045 * c-indentation-style: bsd
5047 * indent-tabs-mode: t
5050 * ex: set ts=8 sts=4 sw=4 noet: