/* scope.c
*
- * Copyright (c) 1991-2002, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
Renew(PL_savestack, PL_savestack_max, ANY);
}
+void
+Perl_savestack_grow_cnt(pTHX_ I32 need)
+{
+ PL_savestack_max = PL_savestack_ix + need;
+ Renew(PL_savestack, PL_savestack_max, ANY);
+}
+
#undef GROW
void
sv = *sptr = NEWSV(0,0);
if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
+ MAGIC *mg;
sv_upgrade(sv, SvTYPE(osv));
if (SvGMAGICAL(osv)) {
- MAGIC* mg;
bool oldtainted = PL_tainted;
mg_get(osv); /* note, can croak! */
if (PL_tainting && PL_tainted &&
PL_tainted = oldtainted;
}
SvMAGIC(sv) = SvMAGIC(osv);
+ /* if it's a special scalar or if it has no 'set' magic,
+ * propagate the SvREADONLY flag. --rgs 20030922 */
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ if (SvMAGIC(sv)->mg_type == '\0'
+ || !SvMAGIC(sv)->mg_virtual->svt_set)
+ {
+ SvFLAGS(sv) |= SvREADONLY(osv);
+ break;
+ }
+ }
SvFLAGS(sv) |= SvMAGICAL(osv);
/* XXX SvMAGIC() is *shared* between osv and sv. This can
* lead to coredumps when both SVs are destroyed without one
SSPUSHINT(SAVEt_SHARED_PVREF);
}
+/* set the SvFLAGS specified by mask to the values in val */
+
+void
+Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val)
+{
+ SSCHECK(4);
+ SSPUSHPTR(sv);
+ SSPUSHINT(mask);
+ SSPUSHINT(val);
+ SSPUSHINT(SAVEt_SET_SVFLAGS);
+}
+
void
Perl_save_gp(pTHX_ GV *gv, I32 empty)
{
- SSCHECK(6);
+ SSGROW(6);
SSPUSHIV((IV)SvLEN(gv));
SvLEN(gv) = 0; /* forget that anything was allocated here */
SSPUSHIV((IV)SvCUR(gv));
SSPUSHINT(idx);
SSPUSHPTR(SvREFCNT_inc(*sptr));
SSPUSHINT(SAVEt_AELEM);
+ /* if it gets reified later, the restore will have the wrong refcnt */
+ if (!AvREAL(av) && AvREIFY(av))
+ SvREFCNT_inc(*sptr);
save_scalar_at(sptr);
sv = *sptr;
/* If we're localizing a tied array element, this new sv
value = (SV*)SSPOPPTR;
gv = (GV*)SSPOPPTR;
ptr = &GvSV(gv);
- SvREFCNT_dec(gv);
+ av = (AV*)gv; /* what to refcnt_dec */
goto restore_sv;
case SAVEt_GENERIC_PVREF: /* generic pv */
str = (char*)SSPOPPTR;
case SAVEt_SVREF: /* scalar reference */
value = (SV*)SSPOPPTR;
ptr = SSPOPPTR;
+ av = Nullav; /* what to refcnt_dec */
restore_sv:
sv = *(SV**)ptr;
DEBUG_S(PerlIO_printf(Perl_debug_log,
SvSETMAGIC(value);
PL_localizing = 0;
SvREFCNT_dec(value);
+ if (av) /* actually an av, hv or gv */
+ SvREFCNT_dec(av);
break;
case SAVEt_AV: /* array reference */
av = (AV*)SSPOPPTR;
SvREFCNT_dec(sv); /* Cast current value to the winds. */
/* preserve pad nature, but also mark as not live
* for any closure capturing */
- SvFLAGS(*(SV**)ptr) |= padflags & SVs_PADSTALE;
+ SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE;
}
break;
case SAVEt_DELETE:
value = (SV*)SSPOPPTR;
i = SSPOPINT;
av = (AV*)SSPOPPTR;
+ if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */
+ SvREFCNT_dec(value);
ptr = av_fetch(av,i,1);
if (ptr) {
sv = *(SV**)ptr;
if (sv && sv != &PL_sv_undef) {
if (SvTIED_mg((SV*)av, PERL_MAGIC_tied))
(void)SvREFCNT_inc(sv);
- SvREFCNT_dec(av);
goto restore_sv;
}
}
ptr = &HeVAL((HE*)ptr);
if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
(void)SvREFCNT_inc(*(SV**)ptr);
- SvREFCNT_dec(hv);
SvREFCNT_dec(sv);
+ av = (AV*)hv; /* what to refcnt_dec */
goto restore_sv;
}
}
AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR;
}
break;
+ case SAVEt_SET_SVFLAGS:
+ {
+ U32 val = (U32)SSPOPINT;
+ U32 mask = (U32)SSPOPINT;
+ sv = (SV*)SSPOPPTR;
+ SvFLAGS(sv) &= ~mask;
+ SvFLAGS(sv) |= val;
+ }
+ break;
default:
Perl_croak(aTHX_ "panic: leave_scope inconsistency");
}