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pp_hot.c
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pp_hot.c
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/* pp_hot.c
*
* Copyright (c) 1991-2000, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* Then he heard Merry change the note, and up went the Horn-cry of Buckland,
* shaking the air.
*
* Awake! Awake! Fear, Fire, Foes! Awake!
* Fire, Foes! Awake!
*/
#include "EXTERN.h"
#define PERL_IN_PP_HOT_C
#include "perl.h"
#ifdef I_UNISTD
#include <unistd.h>
#endif
/* Hot code. */
#ifdef USE_THREADS
static void unset_cvowner(pTHXo_ void *cvarg);
#endif /* USE_THREADS */
PP(pp_const)
{
djSP;
XPUSHs(cSVOP_sv);
RETURN;
}
PP(pp_nextstate)
{
PL_curcop = (COP*)PL_op;
TAINT_NOT; /* Each statement is presumed innocent */
PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
FREETMPS;
return NORMAL;
}
PP(pp_gvsv)
{
djSP;
EXTEND(SP,1);
if (PL_op->op_private & OPpLVAL_INTRO)
PUSHs(save_scalar(cGVOP_gv));
else
PUSHs(GvSV(cGVOP_gv));
RETURN;
}
PP(pp_null)
{
return NORMAL;
}
PP(pp_setstate)
{
PL_curcop = (COP*)PL_op;
return NORMAL;
}
PP(pp_pushmark)
{
PUSHMARK(PL_stack_sp);
return NORMAL;
}
PP(pp_stringify)
{
djSP; dTARGET;
STRLEN len;
char *s;
s = SvPV(TOPs,len);
sv_setpvn(TARG,s,len);
if (SvUTF8(TOPs) && !IN_BYTE)
SvUTF8_on(TARG);
SETTARG;
RETURN;
}
PP(pp_gv)
{
djSP;
XPUSHs((SV*)cGVOP_gv);
RETURN;
}
PP(pp_and)
{
djSP;
if (!SvTRUE(TOPs))
RETURN;
else {
--SP;
RETURNOP(cLOGOP->op_other);
}
}
PP(pp_sassign)
{
djSP; dPOPTOPssrl;
if (PL_op->op_private & OPpASSIGN_BACKWARDS) {
SV *temp;
temp = left; left = right; right = temp;
}
if (PL_tainting && PL_tainted && !SvTAINTED(left))
TAINT_NOT;
SvSetMagicSV(right, left);
SETs(right);
RETURN;
}
PP(pp_cond_expr)
{
djSP;
if (SvTRUEx(POPs))
RETURNOP(cLOGOP->op_other);
else
RETURNOP(cLOGOP->op_next);
}
PP(pp_unstack)
{
I32 oldsave;
TAINT_NOT; /* Each statement is presumed innocent */
PL_stack_sp = PL_stack_base + cxstack[cxstack_ix].blk_oldsp;
FREETMPS;
oldsave = PL_scopestack[PL_scopestack_ix - 1];
LEAVE_SCOPE(oldsave);
return NORMAL;
}
PP(pp_concat)
{
djSP; dATARGET; tryAMAGICbin(concat,opASSIGN);
{
dPOPTOPssrl;
STRLEN len;
U8 *s;
bool left_utf = DO_UTF8(left);
bool right_utf = DO_UTF8(right);
if (left_utf != right_utf) {
if (TARG == right && !right_utf) {
sv_utf8_upgrade(TARG); /* Now straight binary copy */
SvUTF8_on(TARG);
}
else {
/* Set TARG to PV(left), then add right */
U8 *l, *c, *olds = NULL;
STRLEN targlen;
s = (U8*)SvPV(right,len);
if (TARG == right) {
/* Take a copy since we're about to overwrite TARG */
olds = s = (U8*)savepvn((char*)s, len);
}
l = (U8*)SvPV(left, targlen);
if (TARG != left)
sv_setpvn(TARG, (char*)l, targlen);
if (!left_utf)
sv_utf8_upgrade(TARG);
/* Extend TARG to length of right (s) */
targlen = SvCUR(TARG) + len;
if (!right_utf) {
/* plus one for each hi-byte char if we have to upgrade */
for (c = s; c < s + len; c++) {
if (*c & 0x80)
targlen++;
}
}
SvGROW(TARG, targlen+1);
/* And now copy, maybe upgrading right to UTF8 on the fly */
for (c = (U8*)SvEND(TARG); len--; s++) {
if (*s & 0x80 && !right_utf)
c = uv_to_utf8(c, *s);
else
*c++ = *s;
}
SvCUR_set(TARG, targlen);
*SvEND(TARG) = '\0';
SvUTF8_on(TARG);
SETs(TARG);
Safefree(olds);
RETURN;
}
}
if (TARG != left) {
s = (U8*)SvPV(left,len);
if (TARG == right) {
sv_insert(TARG, 0, 0, (char*)s, len);
SETs(TARG);
RETURN;
}
sv_setpvn(TARG, (char *)s, len);
}
else if (SvGMAGICAL(TARG))
mg_get(TARG);
else if (!SvOK(TARG) && SvTYPE(TARG) <= SVt_PVMG)
sv_setpv(TARG, ""); /* Suppress warning. */
s = (U8*)SvPV(right,len);
if (SvOK(TARG)) {
#if defined(PERL_Y2KWARN)
if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K)) {
STRLEN n;
char *s = SvPV(TARG,n);
if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
&& (n == 2 || !isDIGIT(s[n-3])))
{
Perl_warner(aTHX_ WARN_Y2K, "Possible Y2K bug: %s",
"about to append an integer to '19'");
}
}
#endif
sv_catpvn(TARG, (char *)s, len);
}
else
sv_setpvn(TARG, (char *)s, len); /* suppress warning */
if (left_utf)
SvUTF8_on(TARG);
SETTARG;
RETURN;
}
}
PP(pp_padsv)
{
djSP; dTARGET;
XPUSHs(TARG);
if (PL_op->op_flags & OPf_MOD) {
if (PL_op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(PL_curpad[PL_op->op_targ]);
else if (PL_op->op_private & OPpDEREF) {
PUTBACK;
vivify_ref(PL_curpad[PL_op->op_targ], PL_op->op_private & OPpDEREF);
SPAGAIN;
}
}
RETURN;
}
PP(pp_readline)
{
tryAMAGICunTARGET(iter, 0);
PL_last_in_gv = (GV*)(*PL_stack_sp--);
if (SvTYPE(PL_last_in_gv) != SVt_PVGV) {
if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV)
PL_last_in_gv = (GV*)SvRV(PL_last_in_gv);
else {
dSP;
XPUSHs((SV*)PL_last_in_gv);
PUTBACK;
pp_rv2gv();
PL_last_in_gv = (GV*)(*PL_stack_sp--);
}
}
return do_readline();
}
PP(pp_eq)
{
djSP; tryAMAGICbinSET(eq,0);
{
dPOPnv;
SETs(boolSV(TOPn == value));
RETURN;
}
}
PP(pp_preinc)
{
djSP;
if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
DIE(aTHX_ PL_no_modify);
if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
SvIVX(TOPs) != IV_MAX)
{
++SvIVX(TOPs);
SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
}
else
sv_inc(TOPs);
SvSETMAGIC(TOPs);
return NORMAL;
}
PP(pp_or)
{
djSP;
if (SvTRUE(TOPs))
RETURN;
else {
--SP;
RETURNOP(cLOGOP->op_other);
}
}
PP(pp_add)
{
djSP; dATARGET; tryAMAGICbin(add,opASSIGN);
{
dPOPTOPnnrl_ul;
SETn( left + right );
RETURN;
}
}
PP(pp_aelemfast)
{
djSP;
AV *av = GvAV(cGVOP_gv);
U32 lval = PL_op->op_flags & OPf_MOD;
SV** svp = av_fetch(av, PL_op->op_private, lval);
SV *sv = (svp ? *svp : &PL_sv_undef);
EXTEND(SP, 1);
if (!lval && SvGMAGICAL(sv)) /* see note in pp_helem() */
sv = sv_mortalcopy(sv);
PUSHs(sv);
RETURN;
}
PP(pp_join)
{
djSP; dMARK; dTARGET;
MARK++;
do_join(TARG, *MARK, MARK, SP);
SP = MARK;
SETs(TARG);
RETURN;
}
PP(pp_pushre)
{
djSP;
#ifdef DEBUGGING
/*
* We ass_u_me that LvTARGOFF() comes first, and that two STRLENs
* will be enough to hold an OP*.
*/
SV* sv = sv_newmortal();
sv_upgrade(sv, SVt_PVLV);
LvTYPE(sv) = '/';
Copy(&PL_op, &LvTARGOFF(sv), 1, OP*);
XPUSHs(sv);
#else
XPUSHs((SV*)PL_op);
#endif
RETURN;
}
/* Oversized hot code. */
PP(pp_print)
{
djSP; dMARK; dORIGMARK;
GV *gv;
IO *io;
register PerlIO *fp;
MAGIC *mg;
STRLEN n_a;
if (PL_op->op_flags & OPf_STACKED)
gv = (GV*)*++MARK;
else
gv = PL_defoutgv;
if ((mg = SvTIED_mg((SV*)gv, 'q'))) {
if (MARK == ORIGMARK) {
/* If using default handle then we need to make space to
* pass object as 1st arg, so move other args up ...
*/
MEXTEND(SP, 1);
++MARK;
Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
++SP;
}
PUSHMARK(MARK - 1);
*MARK = SvTIED_obj((SV*)gv, mg);
PUTBACK;
ENTER;
call_method("PRINT", G_SCALAR);
LEAVE;
SPAGAIN;
MARK = ORIGMARK + 1;
*MARK = *SP;
SP = MARK;
RETURN;
}
if (!(io = GvIO(gv))) {
dTHR;
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS$_IFI);
goto just_say_no;
}
else if (!(fp = IoOFP(io))) {
if (ckWARN2(WARN_CLOSED, WARN_IO)) {
if (IoIFP(io)) {
/* integrate with report_evil_fh()? */
char *name = NULL;
if (isGV(gv)) {
SV* sv = sv_newmortal();
gv_efullname4(sv, gv, Nullch, FALSE);
name = SvPV_nolen(sv);
}
if (name && *name)
Perl_warner(aTHX_ WARN_IO,
"Filehandle %s opened only for input", name);
else
Perl_warner(aTHX_ WARN_IO,
"Filehandle opened only for input");
}
else if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
}
SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI);
goto just_say_no;
}
else {
MARK++;
if (PL_ofslen) {
while (MARK <= SP) {
if (!do_print(*MARK, fp))
break;
MARK++;
if (MARK <= SP) {
if (PerlIO_write(fp, PL_ofs, PL_ofslen) == 0 || PerlIO_error(fp)) {
MARK--;
break;
}
}
}
}
else {
while (MARK <= SP) {
if (!do_print(*MARK, fp))
break;
MARK++;
}
}
if (MARK <= SP)
goto just_say_no;
else {
if (PL_orslen)
if (PerlIO_write(fp, PL_ors, PL_orslen) == 0 || PerlIO_error(fp))
goto just_say_no;
if (IoFLAGS(io) & IOf_FLUSH)
if (PerlIO_flush(fp) == EOF)
goto just_say_no;
}
}
SP = ORIGMARK;
PUSHs(&PL_sv_yes);
RETURN;
just_say_no:
SP = ORIGMARK;
PUSHs(&PL_sv_undef);
RETURN;
}
PP(pp_rv2av)
{
djSP; dTOPss;
AV *av;
if (SvROK(sv)) {
wasref:
tryAMAGICunDEREF(to_av);
av = (AV*)SvRV(sv);
if (SvTYPE(av) != SVt_PVAV)
DIE(aTHX_ "Not an ARRAY reference");
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)av);
RETURN;
}
}
else {
if (SvTYPE(sv) == SVt_PVAV) {
av = (AV*)sv;
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)av);
RETURN;
}
}
else {
GV *gv;
if (SvTYPE(sv) != SVt_PVGV) {
char *sym;
STRLEN len;
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvROK(sv))
goto wasref;
}
if (!SvOK(sv)) {
if (PL_op->op_flags & OPf_REF ||
PL_op->op_private & HINT_STRICT_REFS)
DIE(aTHX_ PL_no_usym, "an ARRAY");
if (ckWARN(WARN_UNINITIALIZED))
report_uninit();
if (GIMME == G_ARRAY) {
(void)POPs;
RETURN;
}
RETSETUNDEF;
}
sym = SvPV(sv,len);
if ((PL_op->op_flags & OPf_SPECIAL) &&
!(PL_op->op_flags & OPf_MOD))
{
gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV);
if (!gv
&& (!is_gv_magical(sym,len,0)
|| !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV))))
{
RETSETUNDEF;
}
}
else {
if (PL_op->op_private & HINT_STRICT_REFS)
DIE(aTHX_ PL_no_symref, sym, "an ARRAY");
gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV);
}
}
else {
gv = (GV*)sv;
}
av = GvAVn(gv);
if (PL_op->op_private & OPpLVAL_INTRO)
av = save_ary(gv);
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)av);
RETURN;
}
}
}
if (GIMME == G_ARRAY) {
I32 maxarg = AvFILL(av) + 1;
(void)POPs; /* XXXX May be optimized away? */
EXTEND(SP, maxarg);
if (SvRMAGICAL(av)) {
U32 i;
for (i=0; i < maxarg; i++) {
SV **svp = av_fetch(av, i, FALSE);
SP[i+1] = (svp) ? *svp : &PL_sv_undef;
}
}
else {
Copy(AvARRAY(av), SP+1, maxarg, SV*);
}
SP += maxarg;
}
else {
dTARGET;
I32 maxarg = AvFILL(av) + 1;
SETi(maxarg);
}
RETURN;
}
PP(pp_rv2hv)
{
djSP; dTOPss;
HV *hv;
if (SvROK(sv)) {
wasref:
tryAMAGICunDEREF(to_hv);
hv = (HV*)SvRV(sv);
if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV)
DIE(aTHX_ "Not a HASH reference");
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)hv);
RETURN;
}
}
else {
if (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV) {
hv = (HV*)sv;
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)hv);
RETURN;
}
}
else {
GV *gv;
if (SvTYPE(sv) != SVt_PVGV) {
char *sym;
STRLEN len;
if (SvGMAGICAL(sv)) {
mg_get(sv);
if (SvROK(sv))
goto wasref;
}
if (!SvOK(sv)) {
if (PL_op->op_flags & OPf_REF ||
PL_op->op_private & HINT_STRICT_REFS)
DIE(aTHX_ PL_no_usym, "a HASH");
if (ckWARN(WARN_UNINITIALIZED))
report_uninit();
if (GIMME == G_ARRAY) {
SP--;
RETURN;
}
RETSETUNDEF;
}
sym = SvPV(sv,len);
if ((PL_op->op_flags & OPf_SPECIAL) &&
!(PL_op->op_flags & OPf_MOD))
{
gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV);
if (!gv
&& (!is_gv_magical(sym,len,0)
|| !(gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV))))
{
RETSETUNDEF;
}
}
else {
if (PL_op->op_private & HINT_STRICT_REFS)
DIE(aTHX_ PL_no_symref, sym, "a HASH");
gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV);
}
}
else {
gv = (GV*)sv;
}
hv = GvHVn(gv);
if (PL_op->op_private & OPpLVAL_INTRO)
hv = save_hash(gv);
if (PL_op->op_flags & OPf_REF) {
SETs((SV*)hv);
RETURN;
}
}
}
if (GIMME == G_ARRAY) { /* array wanted */
*PL_stack_sp = (SV*)hv;
return do_kv();
}
else {
dTARGET;
if (SvTYPE(hv) == SVt_PVAV)
hv = avhv_keys((AV*)hv);
if (HvFILL(hv))
Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf,
(IV)HvFILL(hv), (IV)HvMAX(hv) + 1);
else
sv_setiv(TARG, 0);
SETTARG;
RETURN;
}
}
STATIC int
S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem,
SV **lastrelem)
{
OP *leftop;
I32 i;
leftop = ((BINOP*)PL_op)->op_last;
assert(leftop);
assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST);
leftop = ((LISTOP*)leftop)->op_first;
assert(leftop);
/* Skip PUSHMARK and each element already assigned to. */
for (i = lelem - firstlelem; i > 0; i--) {
leftop = leftop->op_sibling;
assert(leftop);
}
if (leftop->op_type != OP_RV2HV)
return 0;
/* pseudohash */
if (av_len(ary) > 0)
av_fill(ary, 0); /* clear all but the fields hash */
if (lastrelem >= relem) {
while (relem < lastrelem) { /* gobble up all the rest */
SV *tmpstr;
assert(relem[0]);
assert(relem[1]);
/* Avoid a memory leak when avhv_store_ent dies. */
tmpstr = sv_newmortal();
sv_setsv(tmpstr,relem[1]); /* value */
relem[1] = tmpstr;
if (avhv_store_ent(ary,relem[0],tmpstr,0))
(void)SvREFCNT_inc(tmpstr);
if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr))
mg_set(tmpstr);
relem += 2;
TAINT_NOT;
}
}
if (relem == lastrelem)
return 1;
return 2;
}
STATIC void
S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem)
{
if (*relem) {
SV *tmpstr;
if (ckWARN(WARN_MISC)) {
if (relem == firstrelem &&
SvROK(*relem) &&
(SvTYPE(SvRV(*relem)) == SVt_PVAV ||
SvTYPE(SvRV(*relem)) == SVt_PVHV))
{
Perl_warner(aTHX_ WARN_MISC,
"Reference found where even-sized list expected");
}
else
Perl_warner(aTHX_ WARN_MISC,
"Odd number of elements in hash assignment");
}
if (SvTYPE(hash) == SVt_PVAV) {
/* pseudohash */
tmpstr = sv_newmortal();
if (avhv_store_ent((AV*)hash,*relem,tmpstr,0))
(void)SvREFCNT_inc(tmpstr);
if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr))
mg_set(tmpstr);
}
else {
HE *didstore;
tmpstr = NEWSV(29,0);
didstore = hv_store_ent(hash,*relem,tmpstr,0);
if (SvMAGICAL(hash)) {
if (SvSMAGICAL(tmpstr))
mg_set(tmpstr);
if (!didstore)
sv_2mortal(tmpstr);
}
}
TAINT_NOT;
}
}
PP(pp_aassign)
{
djSP;
SV **lastlelem = PL_stack_sp;
SV **lastrelem = PL_stack_base + POPMARK;
SV **firstrelem = PL_stack_base + POPMARK + 1;
SV **firstlelem = lastrelem + 1;
register SV **relem;
register SV **lelem;
register SV *sv;
register AV *ary;
I32 gimme;
HV *hash;
I32 i;
int magic;
PL_delaymagic = DM_DELAY; /* catch simultaneous items */
/* If there's a common identifier on both sides we have to take
* special care that assigning the identifier on the left doesn't
* clobber a value on the right that's used later in the list.
*/
if (PL_op->op_private & (OPpASSIGN_COMMON)) {
EXTEND_MORTAL(lastrelem - firstrelem + 1);
for (relem = firstrelem; relem <= lastrelem; relem++) {
/*SUPPRESS 560*/
if ((sv = *relem)) {
TAINT_NOT; /* Each item is independent */
*relem = sv_mortalcopy(sv);
}
}
}
relem = firstrelem;
lelem = firstlelem;
ary = Null(AV*);
hash = Null(HV*);
while (lelem <= lastlelem) {
TAINT_NOT; /* Each item stands on its own, taintwise. */
sv = *lelem++;
switch (SvTYPE(sv)) {
case SVt_PVAV:
ary = (AV*)sv;
magic = SvMAGICAL(ary) != 0;
if (PL_op->op_private & OPpASSIGN_HASH) {
switch (do_maybe_phash(ary, lelem, firstlelem, relem,
lastrelem))
{
case 0:
goto normal_array;
case 1:
do_oddball((HV*)ary, relem, firstrelem);
}
relem = lastrelem + 1;
break;
}
normal_array:
av_clear(ary);
av_extend(ary, lastrelem - relem);
i = 0;
while (relem <= lastrelem) { /* gobble up all the rest */
SV **didstore;
sv = NEWSV(28,0);
assert(*relem);
sv_setsv(sv,*relem);
*(relem++) = sv;
didstore = av_store(ary,i++,sv);
if (magic) {
if (SvSMAGICAL(sv))
mg_set(sv);
if (!didstore)
sv_2mortal(sv);
}
TAINT_NOT;
}
break;
case SVt_PVHV: { /* normal hash */
SV *tmpstr;
hash = (HV*)sv;
magic = SvMAGICAL(hash) != 0;
hv_clear(hash);
while (relem < lastrelem) { /* gobble up all the rest */
HE *didstore;
if (*relem)
sv = *(relem++);
else
sv = &PL_sv_no, relem++;
tmpstr = NEWSV(29,0);
if (*relem)
sv_setsv(tmpstr,*relem); /* value */
*(relem++) = tmpstr;
didstore = hv_store_ent(hash,sv,tmpstr,0);
if (magic) {
if (SvSMAGICAL(tmpstr))
mg_set(tmpstr);
if (!didstore)
sv_2mortal(tmpstr);
}
TAINT_NOT;
}
if (relem == lastrelem) {
do_oddball(hash, relem, firstrelem);
relem++;
}
}
break;
default:
if (SvIMMORTAL(sv)) {
if (relem <= lastrelem)
relem++;
break;
}
if (relem <= lastrelem) {
sv_setsv(sv, *relem);
*(relem++) = sv;
}
else
sv_setsv(sv, &PL_sv_undef);
SvSETMAGIC(sv);
break;
}
}
if (PL_delaymagic & ~DM_DELAY) {
if (PL_delaymagic & DM_UID) {
#ifdef HAS_SETRESUID
(void)setresuid(PL_uid,PL_euid,(Uid_t)-1);
#else
# ifdef HAS_SETREUID
(void)setreuid(PL_uid,PL_euid);
# else
# ifdef HAS_SETRUID
if ((PL_delaymagic & DM_UID) == DM_RUID) {
(void)setruid(PL_uid);
PL_delaymagic &= ~DM_RUID;
}
# endif /* HAS_SETRUID */
# ifdef HAS_SETEUID
if ((PL_delaymagic & DM_UID) == DM_EUID) {
(void)seteuid(PL_uid);
PL_delaymagic &= ~DM_EUID;
}
# endif /* HAS_SETEUID */
if (PL_delaymagic & DM_UID) {
if (PL_uid != PL_euid)
DIE(aTHX_ "No setreuid available");
(void)PerlProc_setuid(PL_uid);
}
# endif /* HAS_SETREUID */
#endif /* HAS_SETRESUID */
PL_uid = PerlProc_getuid();
PL_euid = PerlProc_geteuid();
}
if (PL_delaymagic & DM_GID) {
#ifdef HAS_SETRESGID
(void)setresgid(PL_gid,PL_egid,(Gid_t)-1);
#else
# ifdef HAS_SETREGID
(void)setregid(PL_gid,PL_egid);
# else
# ifdef HAS_SETRGID
if ((PL_delaymagic & DM_GID) == DM_RGID) {
(void)setrgid(PL_gid);
PL_delaymagic &= ~DM_RGID;
}
# endif /* HAS_SETRGID */
# ifdef HAS_SETEGID
if ((PL_delaymagic & DM_GID) == DM_EGID) {
(void)setegid(PL_gid);
PL_delaymagic &= ~DM_EGID;
}
# endif /* HAS_SETEGID */
if (PL_delaymagic & DM_GID) {
if (PL_gid != PL_egid)
DIE(aTHX_ "No setregid available");
(void)PerlProc_setgid(PL_gid);
}
# endif /* HAS_SETREGID */
#endif /* HAS_SETRESGID */
PL_gid = PerlProc_getgid();
PL_egid = PerlProc_getegid();
}
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
}
PL_delaymagic = 0;
gimme = GIMME_V;
if (gimme == G_VOID)
SP = firstrelem - 1;
else if (gimme == G_SCALAR) {
dTARGET;
SP = firstrelem;
SETi(lastrelem - firstrelem + 1);
}
else {
if (ary || hash)
SP = lastrelem;
else
SP = firstrelem + (lastlelem - firstlelem);
lelem = firstlelem + (relem - firstrelem);
while (relem <= SP)
*relem++ = (lelem <= lastlelem) ? *lelem++ : &PL_sv_undef;
}
RETURN;
}
PP(pp_qr)
{
djSP;
register PMOP *pm = cPMOP;
SV *rv = sv_newmortal();
SV *sv = newSVrv(rv, "Regexp");
sv_magic(sv,(SV*)ReREFCNT_inc(pm->op_pmregexp),'r',0,0);
RETURNX(PUSHs(rv));
}
PP(pp_match)
{
djSP; dTARG;
register PMOP *pm = cPMOP;
register char *t;
register char *s;
char *strend;
I32 global;
I32 r_flags = REXEC_CHECKED;
char *truebase; /* Start of string */
register REGEXP *rx = pm->op_pmregexp;
bool rxtainted;
I32 gimme = GIMME;
STRLEN len;
I32 minmatch = 0;
I32 oldsave = PL_savestack_ix;
I32 update_minmatch = 1;
I32 had_zerolen = 0;
if (PL_op->op_flags & OPf_STACKED)