/* pp_hot.c
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-1997, 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.
s = SvPV_force(TARG, len);
}
s = SvPV(right,len);
- sv_catpvn(TARG,s,len);
+ if (SvOK(TARG))
+ sv_catpvn(TARG,s,len);
+ else
+ sv_setpvn(TARG,s,len); /* suppress warning */
SETTARG;
RETURN;
}
if (op->op_private & OPpLVAL_INTRO)
SAVECLEARSV(curpad[op->op_targ]);
else if (op->op_private & OPpDEREF)
- provide_ref(op, curpad[op->op_targ]);
+ vivify_ref(curpad[op->op_targ], op->op_flags & OPpDEREF);
}
RETURN;
}
PP(pp_preinc)
{
dSP;
+ if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
+ croak(no_modify);
if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
SvIVX(TOPs) != IV_MAX)
{
PP(pp_pushre)
{
dSP;
+#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(&op, &LvTARGOFF(sv), 1, OP*);
+ XPUSHs(sv);
+#else
XPUSHs((SV*)op);
+#endif
RETURN;
}
else
gv = defoutgv;
if (SvMAGICAL(gv) && (mg = mg_find((SV*)gv, 'q'))) {
- SV *sv;
-
- PUSHMARK(MARK-1);
+ if (MARK == ORIGMARK) {
+ EXTEND(SP, 1);
+ ++MARK;
+ Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
+ ++SP;
+ }
+ PUSHMARK(MARK - 1);
*MARK = mg->mg_obj;
+ PUTBACK;
ENTER;
perl_call_method("PRINT", G_SCALAR);
LEAVE;
SPAGAIN;
- sv = POPs;
- SP = ORIGMARK;
- PUSHs(sv);
+ MARK = ORIGMARK + 1;
+ *MARK = *SP;
+ SP = MARK;
RETURN;
}
if (!(io = GvIO(gv))) {
PP(pp_rv2av)
{
dSP; dPOPss;
-
AV *av;
if (SvROK(sv)) {
if (op->op_flags & OPf_REF ||
op->op_private & HINT_STRICT_REFS)
DIE(no_usym, "an ARRAY");
+ if (dowarn)
+ warn(warn_uninit);
if (GIMME == G_ARRAY)
RETURN;
RETPUSHUNDEF;
PP(pp_rv2hv)
{
-
dSP; dTOPss;
-
HV *hv;
if (SvROK(sv)) {
if (op->op_flags & OPf_REF ||
op->op_private & HINT_STRICT_REFS)
DIE(no_usym, "a HASH");
+ if (dowarn)
+ warn(warn_uninit);
if (GIMME == G_ARRAY) {
SP--;
RETURN;
else {
dTARGET;
if (HvFILL(hv)) {
- sprintf(buf, "%d/%d", HvFILL(hv), HvMAX(hv)+1);
+ sprintf(buf, "%ld/%ld", (long)HvFILL(hv), (long)HvMAX(hv)+1);
sv_setpv(TARG, buf);
}
else
magic = SvMAGICAL(ary) != 0;
av_clear(ary);
+ av_extend(ary, lastrelem - relem);
i = 0;
while (relem <= lastrelem) { /* gobble up all the rest */
sv = NEWSV(28,0);
STRLEN len;
I32 minmatch = 0;
I32 oldsave = savestack_ix;
+ I32 update_minmatch = 1;
if (op->op_flags & OPf_STACKED)
TARG = POPs;
strend = s + len;
if (!s)
DIE("panic: do_match");
+ TAINT_NOT;
if (pm->op_pmflags & PMf_USED) {
if (gimme == G_ARRAY)
if (mg && mg->mg_len >= 0) {
rx->endp[0] = rx->startp[0] = s + mg->mg_len;
minmatch = (mg->mg_flags & MGf_MINMATCH);
+ update_minmatch = 0;
}
}
}
t = s = rx->endp[0];
if (s >= strend)
goto nope;
- minmatch = (s == rx->startp[0]);
+ if (update_minmatch++)
+ minmatch = (s == rx->startp[0]);
}
if (pm->op_pmshort) {
if (pm->op_pmflags & PMf_SCANFIRST) {
/*NOTREACHED*/
gotcha:
+ TAINT_IF(rx->exec_tainted);
if (gimme == G_ARRAY) {
I32 iters, i, len;
- TAINT_IF(rx->exec_tainted);
iters = rx->nparens;
if (global && !iters)
i = 1;
}
yup:
+ TAINT_IF(rx->exec_tainted);
++BmUSEFUL(pm->op_pmshort);
curpm = pm;
if (pm->op_pmflags & PMf_ONCE)
*(end++) = '\n'; *end = '\0';
for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
if (hasdir) {
- if (isunix) trim_unixpath(rstr,SvPVX(tmpglob));
+ if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
begin = rstr;
}
else {
PerlIO_rewind(tmpfp);
IoTYPE(io) = '<';
IoIFP(io) = fp = tmpfp;
+ IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
}
}
}
}
else {
sv = TARG;
+ if (SvROK(sv))
+ sv_unref(sv);
(void)SvUPGRADE(sv, SVt_PV);
tmplen = SvLEN(sv); /* remember if already alloced */
if (!tmplen)
HE* he;
SV *keysv = POPs;
HV *hv = (HV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
+ U32 lval = op->op_flags & OPf_MOD;
+ U32 defer = op->op_private & OPpLVAL_DEFER;
if (SvTYPE(hv) != SVt_PVHV)
RETPUSHUNDEF;
- he = hv_fetch_ent(hv, keysv, lval, 0);
+ he = hv_fetch_ent(hv, keysv, lval && !defer, 0);
if (lval) {
- if (!he || HeVAL(he) == &sv_undef)
- DIE(no_helem, SvPV(keysv, na));
+ if (!he || HeVAL(he) == &sv_undef) {
+ SV* lv;
+ SV* key2;
+ if (!defer)
+ DIE(no_helem, SvPV(keysv, na));
+ lv = sv_newmortal();
+ sv_upgrade(lv, SVt_PVLV);
+ LvTYPE(lv) = 'y';
+ sv_magic(lv, key2 = newSVsv(keysv), 'y', Nullch, 0);
+ SvREFCNT_dec(key2); /* sv_magic() increments refcount */
+ LvTARG(lv) = SvREFCNT_inc(hv);
+ LvTARGLEN(lv) = 1;
+ PUSHs(lv);
+ RETURN;
+ }
if (op->op_private & OPpLVAL_INTRO) {
if (HvNAME(hv) && isGV(HeVAL(he)))
save_gp((GV*)HeVAL(he), !(op->op_flags & OPf_SPECIAL));
save_svref(&HeVAL(he));
}
else if (op->op_private & OPpDEREF)
- provide_ref(op, HeVAL(he));
+ vivify_ref(HeVAL(he), op->op_private & OPpDEREF);
}
PUSHs(he ? HeVAL(he) : &sv_undef);
RETURN;
if (lv)
SvREFCNT_dec(LvTARG(lv));
else {
- lv = cx->blk_loop.iterlval = newSVsv(sv);
+ lv = cx->blk_loop.iterlval = NEWSV(26, 0);
sv_upgrade(lv, SVt_PVLV);
- sv_magic(lv, Nullsv, 'y', Nullch, 0);
LvTYPE(lv) = 'y';
+ sv_magic(lv, Nullsv, 'y', Nullch, 0);
}
LvTARG(lv) = SvREFCNT_inc(av);
LvTARGOFF(lv) = cx->blk_loop.iterix;
- LvTARGLEN(lv) = 1;
+ LvTARGLEN(lv) = -1;
sv = (SV*)lv;
}
TARG = GvSV(defgv);
EXTEND(SP,1);
}
+ if (SvREADONLY(TARG)
+ || (SvTYPE(TARG) > SVt_PVLV
+ && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
+ croak(no_modify);
s = SvPV(TARG, len);
- if (!SvPOKp(TARG) || SvREADONLY(TARG) || (SvTYPE(TARG) == SVt_PVGV))
+ if (!SvPOKp(TARG) || SvTYPE(TARG) == SVt_PVGV)
force_on_match = 1;
+ TAINT_NOT;
force_it:
if (!pm || !s)
else {
sv_chop(TARG, d);
}
+ TAINT_IF(rxtainted);
PUSHs(&sv_yes);
}
else {
SvCUR_set(TARG, d - SvPVX(TARG) + i);
Move(s, d, i+1, char); /* include the NUL */
}
+ TAINT_IF(rxtainted);
PUSHs(sv_2mortal(newSViv((I32)iters)));
}
(void)SvPOK_only(TARG);
SvSETMAGIC(TARG);
- if (rxtainted)
- SvTAINTED_on(TARG);
+ SvTAINT(TARG);
LEAVE_SCOPE(oldsave);
RETURN;
}
} while (pregexec(rx, s, strend, orig, s == m, Nullsv, safebase));
sv_catpvn(dstr, s, strend - s);
+ TAINT_IF(rxtainted);
+
(void)SvOOK_off(TARG);
Safefree(SvPVX(TARG));
SvPVX(TARG) = SvPVX(dstr);
(void)SvPOK_only(TARG);
SvSETMAGIC(TARG);
- if (rxtainted)
- SvTAINTED_on(TARG);
+ SvTAINT(TARG);
PUSHs(sv_2mortal(newSViv((I32)iters)));
LEAVE_SCOPE(oldsave);
RETURN;
}
+
PUSHs(&sv_no);
LEAVE_SCOPE(oldsave);
RETURN;
PMOP *newpm;
I32 gimme;
register CONTEXT *cx;
+ struct block_sub cxsub;
POPBLOCK(cx,newpm);
- POPSUB(cx);
-
+ POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */
+
if (gimme == G_SCALAR) {
MARK = newsp + 1;
if (MARK <= SP)
- if (SvFLAGS(TOPs) & SVs_TEMP)
- *MARK = TOPs;
- else
- *MARK = sv_mortalcopy(TOPs);
+ *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs);
else {
- MEXTEND(mark,0);
+ MEXTEND(MARK, 0);
*MARK = &sv_undef;
}
SP = MARK;
}
else {
- for (mark = newsp + 1; mark <= SP; mark++)
- if (!(SvFLAGS(*mark) & SVs_TEMP))
- *mark = sv_mortalcopy(*mark);
- /* in case LEAVE wipes old return values */
- }
-
- if (cx->blk_sub.hasargs) { /* You don't exist; go away. */
- AV* av = cx->blk_sub.argarray;
-
- av_clear(av);
- AvREAL_off(av);
+ for (MARK = newsp + 1; MARK <= SP; MARK++) {
+ if (!SvTEMP(*MARK))
+ *MARK = sv_mortalcopy(*MARK);
+ }
}
- curpm = newpm; /* Don't pop $1 et al till now */
+ PUTBACK;
+
+ POPSUB2(); /* Stack values are safe: release CV and @_ ... */
+ curpm = newpm; /* ... and pop $1 et al */
LEAVE;
- PUTBACK;
return pop_return();
}
register CONTEXT *cx;
I32 gimme;
bool hasargs = (op->op_flags & OPf_STACKED) != 0;
- bool may_clone = TRUE;
if (!sv)
DIE("Not a CODE reference");
if (sv == &sv_yes) /* unfound import, ignore */
RETURN;
- if (!SvOK(sv))
+ if (SvGMAGICAL(sv)) {
+ mg_get(sv);
+ sym = SvPOKp(sv) ? SvPVX(sv) : Nullch;
+ }
+ else
+ sym = SvPV(sv, na);
+ if (!sym)
DIE(no_usym, "a subroutine");
- sym = SvPV(sv,na);
if (op->op_private & HINT_STRICT_REFS)
DIE(no_symref, sym, "a subroutine");
cv = perl_get_cv(sym, TRUE);
break;
}
cv = (CV*)SvRV(sv);
- if (SvTYPE(cv) == SVt_PVCV) {
- may_clone = FALSE;
+ if (SvTYPE(cv) == SVt_PVCV)
break;
- }
/* FALL THROUGH */
case SVt_PVHV:
case SVt_PVAV:
DIE("Not a CODE reference");
case SVt_PVCV:
cv = (CV*)sv;
- may_clone = FALSE;
break;
case SVt_PVGV:
if (!(cv = GvCVu((GV*)sv)))
break;
}
- if (may_clone && cv && CvCLONE(cv))
- cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
-
ENTER;
SAVETMPS;
DIE("Not a CODE reference");
if (!CvROOT(cv) && !CvXSUB(cv)) {
- if (gv = CvGV(cv)) {
- SV *tmpstr;
- GV *ngv;
- if (cv != GvCV(gv)) { /* autoloaded stub? */
- cv = GvCV(gv);
- goto retry;
- }
- tmpstr = sv_newmortal();
- gv_efullname3(tmpstr, gv, Nullch);
- ngv = gv_fetchmethod(GvESTASH(gv), "AUTOLOAD");
- if (ngv && ngv != gv && (cv = GvCV(ngv))) { /* One more chance... */
- gv = ngv;
- sv_setsv(GvSV(CvGV(cv)), tmpstr); /* Set CV's $AUTOLOAD */
- SvTAINTED_off(GvSV(CvGV(cv)));
- goto retry;
- }
- else
- DIE("Undefined subroutine &%s called",SvPVX(tmpstr));
+ GV* autogv;
+ SV* subname;
+
+ /* anonymous or undef'd function leaves us no recourse */
+ if (CvANON(cv) || !(gv = CvGV(cv)))
+ DIE("Undefined subroutine called");
+ /* autoloaded stub? */
+ if (cv != GvCV(gv)) {
+ cv = GvCV(gv);
+ goto retry;
}
- DIE("Undefined subroutine called");
+ /* should call AUTOLOAD now? */
+ if ((autogv = gv_autoload(GvESTASH(gv), GvNAME(gv), GvNAMELEN(gv)))) {
+ cv = GvCV(autogv);
+ goto retry;
+ }
+ /* sorry */
+ subname = sv_newmortal();
+ gv_efullname3(subname, gv, Nullch);
+ DIE("Undefined subroutine &%s called", SvPVX(subname));
}
gimme = GIMME;
- if ((op->op_private & OPpENTERSUB_DB) && !CvNODEBUG(cv)) {
+ if ((op->op_private & OPpENTERSUB_DB) && GvCV(DBsub) && !CvNODEBUG(cv)) {
SV *oldsv = sv;
sv = GvSV(DBsub);
save_item(sv);
(void)SvREFCNT_inc(cv);
else { /* save temporaries on recursion? */
if (CvDEPTH(cv) == 100 && dowarn
- && !(perldb && cv == GvCV(DBsub)))
- warn("Deep recursion on subroutine \"%s\"",GvENAME(CvGV(cv)));
+ && !(perldb && cv == GvCV(DBsub)))
+ sub_crush_depth(cv);
if (CvDEPTH(cv) > AvFILL(padlist)) {
AV *av;
AV *newpad = newAV();
}
}
+void
+sub_crush_depth(cv)
+CV* cv;
+{
+ if (CvANON(cv))
+ warn("Deep recursion on anonymous subroutine");
+ else {
+ SV* tmpstr = sv_newmortal();
+ gv_efullname3(tmpstr, CvGV(cv), Nullch);
+ warn("Deep recursion on subroutine \"%s\"", SvPVX(tmpstr));
+ }
+}
+
PP(pp_aelem)
{
dSP;
SV** svp;
I32 elem = POPi;
- AV *av = (AV*)POPs;
- I32 lval = op->op_flags & OPf_MOD;
+ AV* av = (AV*)POPs;
+ U32 lval = op->op_flags & OPf_MOD;
+ U32 defer = (op->op_private & OPpLVAL_DEFER) && (elem > AvFILL(av));
if (elem > 0)
elem -= curcop->cop_arybase;
if (SvTYPE(av) != SVt_PVAV)
RETPUSHUNDEF;
- svp = av_fetch(av, elem, lval);
+ svp = av_fetch(av, elem, lval && !defer);
if (lval) {
- if (!svp || *svp == &sv_undef)
- DIE(no_aelem, elem);
+ if (!svp || *svp == &sv_undef) {
+ SV* lv;
+ if (!defer)
+ DIE(no_aelem, elem);
+ lv = sv_newmortal();
+ sv_upgrade(lv, SVt_PVLV);
+ LvTYPE(lv) = 'y';
+ sv_magic(lv, Nullsv, 'y', Nullch, 0);
+ LvTARG(lv) = SvREFCNT_inc(av);
+ LvTARGOFF(lv) = elem;
+ LvTARGLEN(lv) = 1;
+ PUSHs(lv);
+ RETURN;
+ }
if (op->op_private & OPpLVAL_INTRO)
save_svref(svp);
else if (op->op_private & OPpDEREF)
- provide_ref(op, *svp);
+ vivify_ref(*svp, op->op_private & OPpDEREF);
}
PUSHs(svp ? *svp : &sv_undef);
RETURN;
}
void
-provide_ref(op, sv)
-OP* op;
+vivify_ref(sv, to_what)
SV* sv;
+U32 to_what;
{
if (SvGMAGICAL(sv))
mg_get(sv);
Safefree(SvPVX(sv));
SvLEN(sv) = SvCUR(sv) = 0;
}
- switch (op->op_private & OPpDEREF)
- {
+ switch (to_what) {
case OPpDEREF_SV:
SvRV(sv) = newSV(0);
break;
projects / p5sagit/p5-mst-13.2.git / blobdiff