/* gv.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
+ * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 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.
static const char S_autoload[] = "AUTOLOAD";
static const STRLEN S_autolen = sizeof(S_autoload)-1;
-
-#ifdef PERL_DONT_CREATE_GVSV
-GV *
-Perl_gv_SVadd(pTHX_ GV *gv)
-{
- PERL_ARGS_ASSERT_GV_SVADD;
-
- if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV)
- Perl_croak(aTHX_ "Bad symbol for scalar");
- if (!GvSV(gv))
- GvSV(gv) = newSV(0);
- return gv;
-}
-#endif
-
GV *
-Perl_gv_AVadd(pTHX_ register GV *gv)
+Perl_gv_add_by_type(pTHX_ GV *gv, svtype type)
{
- PERL_ARGS_ASSERT_GV_AVADD;
-
- if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV)
- Perl_croak(aTHX_ "Bad symbol for array");
- if (!GvAV(gv))
- GvAV(gv) = newAV();
- return gv;
-}
-
-GV *
-Perl_gv_HVadd(pTHX_ register GV *gv)
-{
- PERL_ARGS_ASSERT_GV_HVADD;
-
- if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV)
- Perl_croak(aTHX_ "Bad symbol for hash");
- if (!GvHV(gv))
- GvHV(gv) = newHV();
- return gv;
-}
-
-GV *
-Perl_gv_IOadd(pTHX_ register GV *gv)
-{
- dVAR;
-
- PERL_ARGS_ASSERT_GV_IOADD;
-
- if (!gv || SvTYPE((const SV *)gv) != SVt_PVGV) {
-
- /*
- * if it walks like a dirhandle, then let's assume that
- * this is a dirhandle.
- */
- const char * const fh =
- PL_op->op_type == OP_READDIR ||
- PL_op->op_type == OP_TELLDIR ||
- PL_op->op_type == OP_SEEKDIR ||
- PL_op->op_type == OP_REWINDDIR ||
- PL_op->op_type == OP_CLOSEDIR ?
- "dirhandle" : "filehandle";
- Perl_croak(aTHX_ "Bad symbol for %s", fh);
+ SV **where;
+
+ if (
+ !gv
+ || (
+ SvTYPE((const SV *)gv) != SVt_PVGV
+ && SvTYPE((const SV *)gv) != SVt_PVLV
+ )
+ ) {
+ const char *what;
+ if (type == SVt_PVIO) {
+ /*
+ * if it walks like a dirhandle, then let's assume that
+ * this is a dirhandle.
+ */
+ what = PL_op->op_type == OP_READDIR ||
+ PL_op->op_type == OP_TELLDIR ||
+ PL_op->op_type == OP_SEEKDIR ||
+ PL_op->op_type == OP_REWINDDIR ||
+ PL_op->op_type == OP_CLOSEDIR ?
+ "dirhandle" : "filehandle";
+ /* diag_listed_as: Bad symbol for filehandle */
+ } else if (type == SVt_PVHV) {
+ what = "hash";
+ } else {
+ what = type == SVt_PVAV ? "array" : "scalar";
+ }
+ Perl_croak(aTHX_ "Bad symbol for %s", what);
}
- if (!GvIOp(gv)) {
-#ifdef GV_UNIQUE_CHECK
- if (GvUNIQUE(gv)) {
- Perl_croak(aTHX_ "Bad symbol for filehandle (GV is unique)");
- }
-#endif
- GvIOp(gv) = newIO();
+ if (type == SVt_PVHV) {
+ where = (SV **)&GvHV(gv);
+ } else if (type == SVt_PVAV) {
+ where = (SV **)&GvAV(gv);
+ } else if (type == SVt_PVIO) {
+ where = (SV **)&GvIOp(gv);
+ } else {
+ where = &GvSV(gv);
}
+
+ if (!*where)
+ *where = newSV_type(type);
return gv;
}
#else
sv_setpvn(GvSV(gv), name, namelen);
#endif
- if (PERLDB_LINE || PERLDB_SAVESRC)
- hv_magic(GvHVn(gv_AVadd(gv)), NULL, PERL_MAGIC_dbfile);
}
+ if ((PERLDB_LINE || PERLDB_SAVESRC) && !GvAV(gv))
+ hv_magic(GvHVn(gv_AVadd(gv)), NULL, PERL_MAGIC_dbfile);
if (tmpbuf != smallbuf)
Safefree(tmpbuf);
return gv;
return gp;
}
+/* Assign CvGV(cv) = gv, handling weak references.
+ * See also S_anonymise_cv_maybe */
+
+void
+Perl_cvgv_set(pTHX_ CV* cv, GV* gv)
+{
+ GV * const oldgv = CvGV(cv);
+ PERL_ARGS_ASSERT_CVGV_SET;
+
+ if (oldgv == gv)
+ return;
+
+ if (oldgv) {
+ if (CvCVGV_RC(cv)) {
+ SvREFCNT_dec(oldgv);
+ CvCVGV_RC_off(cv);
+ }
+ else {
+ sv_del_backref(MUTABLE_SV(oldgv), MUTABLE_SV(cv));
+ }
+ }
+
+ SvANY(cv)->xcv_gv = gv;
+ assert(!CvCVGV_RC(cv));
+
+ if (!gv)
+ return;
+
+ if (isGV_with_GP(gv) && GvGP(gv) && (GvCV(gv) == cv || GvFORM(gv) == cv))
+ Perl_sv_add_backref(aTHX_ MUTABLE_SV(gv), MUTABLE_SV(cv));
+ else {
+ CvCVGV_RC_on(cv);
+ SvREFCNT_inc_simple_void_NN(gv);
+ }
+}
+
+/* Assign CvSTASH(cv) = st, handling weak references. */
+
+void
+Perl_cvstash_set(pTHX_ CV *cv, HV *st)
+{
+ HV *oldst = CvSTASH(cv);
+ PERL_ARGS_ASSERT_CVSTASH_SET;
+ if (oldst == st)
+ return;
+ if (oldst)
+ sv_del_backref(MUTABLE_SV(oldst), MUTABLE_SV(cv));
+ SvANY(cv)->xcv_stash = st;
+ if (st)
+ Perl_sv_add_backref(aTHX_ MUTABLE_SV(st), MUTABLE_SV(cv));
+}
+
void
Perl_gv_init(pTHX_ GV *gv, HV *stash, const char *name, STRLEN len, int multi)
{
SvIOK_off(gv);
isGV_with_GP_on(gv);
- GvGP(gv) = Perl_newGP(aTHX_ gv);
+ GvGP_set(gv, Perl_newGP(aTHX_ gv));
GvSTASH(gv) = stash;
if (stash)
Perl_sv_add_backref(aTHX_ MUTABLE_SV(stash), MUTABLE_SV(gv));
if (multi || doproto) /* doproto means it _was_ mentioned */
GvMULTI_on(gv);
if (doproto) { /* Replicate part of newSUB here. */
+ CV *cv;
ENTER;
if (has_constant) {
+ char *name0 = NULL;
+ if (name[len])
+ /* newCONSTSUB doesn't take a len arg, so make sure we
+ * give it a \0-terminated string */
+ name0 = savepvn(name,len);
+
/* newCONSTSUB takes ownership of the reference from us. */
- GvCV(gv) = newCONSTSUB(stash, name, has_constant);
+ cv = newCONSTSUB(stash, (name0 ? name0 : name), has_constant);
+ /* In case op.c:S_process_special_blocks stole it: */
+ if (!GvCV(gv))
+ GvCV_set(gv, (CV *)SvREFCNT_inc_simple_NN(cv));
+ assert(GvCV(gv) == cv); /* newCONSTSUB should have set this */
+ if (name0)
+ Safefree(name0);
/* If this reference was a copy of another, then the subroutine
must have been "imported", by a Perl space assignment to a GV
from a reference to CV. */
GvIMPORTED_CV_on(gv);
} else {
(void) start_subparse(0,0); /* Create empty CV in compcv. */
- GvCV(gv) = PL_compcv;
+ cv = PL_compcv;
+ GvCV_set(gv,cv);
}
LEAVE;
mro_method_changed_in(GvSTASH(gv)); /* sub Foo::bar($) { (shift) } sub ASDF::baz($); *ASDF::baz = \&Foo::bar */
- CvGV(GvCV(gv)) = gv;
- CvFILE_set_from_cop(GvCV(gv), PL_curcop);
- CvSTASH(GvCV(gv)) = PL_curstash;
+ CvGV_set(cv, gv);
+ CvFILE_set_from_cop(cv, PL_curcop);
+ CvSTASH_set(cv, PL_curstash);
if (proto) {
- sv_usepvn_flags(MUTABLE_SV(GvCV(gv)), proto, protolen,
+ sv_usepvn_flags(MUTABLE_SV(cv), proto, protolen,
SV_HAS_TRAILING_NUL);
}
}
else {
/* stale cache entry, junk it and move on */
SvREFCNT_dec(cand_cv);
- GvCV(topgv) = cand_cv = NULL;
+ GvCV_set(topgv, NULL);
+ cand_cv = NULL;
GvCVGEN(topgv) = 0;
}
}
cstash = gv_stashsv(linear_sv, 0);
if (!cstash) {
- if (ckWARN(WARN_SYNTAX))
- Perl_warner(aTHX_ packWARN(WARN_SYNTAX), "Can't locate package %"SVf" for @%s::ISA",
- SVfARG(linear_sv), hvname);
+ Perl_ck_warner(aTHX_ packWARN(WARN_SYNTAX), "Can't locate package %"SVf" for @%s::ISA",
+ SVfARG(linear_sv), hvname);
continue;
}
if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) {
if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv);
SvREFCNT_inc_simple_void_NN(cand_cv);
- GvCV(topgv) = cand_cv;
+ GvCV_set(topgv, cand_cv);
GvCVGEN(topgv) = topgen_cmp;
}
return candidate;
if (topgv && (GvREFCNT(topgv) == 1) && (CvROOT(cand_cv) || CvXSUB(cand_cv))) {
if ((old_cv = GvCV(topgv))) SvREFCNT_dec(old_cv);
SvREFCNT_inc_simple_void_NN(cand_cv);
- GvCV(topgv) = cand_cv;
+ GvCV_set(topgv, cand_cv);
GvCVGEN(topgv) = topgen_cmp;
}
return candidate;
/* Right now this is exclusively for the benefit of S_method_common
in pp_hot.c */
if (stash) {
+ /* If we can't find an IO::File method, it might be a call on
+ * a filehandle. If IO:File has not been loaded, try to
+ * require it first instead of croaking */
+ const char *stash_name = HvNAME_get(stash);
+ if (stash_name && memEQs(stash_name, HvNAMELEN_get(stash), "IO::File")
+ && !Perl_hv_common(aTHX_ GvHVn(PL_incgv), NULL,
+ STR_WITH_LEN("IO/File.pm"), 0,
+ HV_FETCH_ISEXISTS, NULL, 0)
+ ) {
+ require_pv("IO/File.pm");
+ gv = gv_fetchmeth(stash, name, nend - name, 0);
+ if (gv)
+ return gv;
+ }
Perl_croak(aTHX_
"Can't locate object method \"%s\" via package \"%.*s\"",
name, (int)HvNAMELEN_get(stash), HvNAME_get(stash));
* Inheriting AUTOLOAD for non-methods works ... for now.
*/
if (!method && (GvCVGEN(gv) || GvSTASH(gv) != stash)
- && ckWARN2(WARN_DEPRECATED, WARN_SYNTAX)
)
- Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
- "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
- packname, (int)len, name);
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
+ "Use of inherited AUTOLOAD for non-method %s::%.*s() is deprecated",
+ packname, (int)len, name);
if (CvISXSUB(cv)) {
/* rather than lookup/init $AUTOLOAD here
* and split that value on the last '::',
* pass along the same data via some unused fields in the CV
*/
- CvSTASH(cv) = stash;
+ CvSTASH_set(cv, stash);
SvPV_set(cv, (char *)name); /* cast to lose constness warning */
SvCUR_set(cv, len);
return gv;
varsv = GvSVn(vargv);
sv_setpvn(varsv, packname, packname_len);
sv_catpvs(varsv, "::");
- sv_catpvn(varsv, name, len);
+ /* Ensure SvSETMAGIC() is called if necessary. In particular, to clear
+ tainting if $FOO::AUTOLOAD was previously tainted, but is not now. */
+ sv_catpvn_mg(varsv, name, len);
return gv;
}
/* require_tie_mod() internal routine for requiring a module
- * that implements the logic of automatical ties like %! and %-
+ * that implements the logic of automatic ties like %! and %-
*
* The "gv" parameter should be the glob.
* "varpv" holds the name of the var, used for error messages.
char *tmpbuf;
HV *stash;
GV *tmpgv;
+ U32 tmplen = namelen + 2;
PERL_ARGS_ASSERT_GV_STASHPVN;
- if (namelen + 2 <= sizeof smallbuf)
+ if (tmplen <= sizeof smallbuf)
tmpbuf = smallbuf;
else
- Newx(tmpbuf, namelen + 2, char);
- Copy(name,tmpbuf,namelen,char);
- tmpbuf[namelen++] = ':';
- tmpbuf[namelen++] = ':';
- tmpgv = gv_fetchpvn_flags(tmpbuf, namelen, flags, SVt_PVHV);
+ Newx(tmpbuf, tmplen, char);
+ Copy(name, tmpbuf, namelen, char);
+ tmpbuf[namelen] = ':';
+ tmpbuf[namelen+1] = ':';
+ tmpgv = gv_fetchpvn_flags(tmpbuf, tmplen, flags, SVt_PVHV);
if (tmpbuf != smallbuf)
Safefree(tmpbuf);
if (!tmpgv)
return NULL;
- if (!GvHV(tmpgv))
- GvHV(tmpgv) = newHV();
stash = GvHV(tmpgv);
- if (!HvNAME_get(stash))
+ if (!(flags & ~GV_NOADD_MASK) && !stash) return NULL;
+ assert(stash);
+ if (!HvNAME_get(stash)) {
hv_name_set(stash, name, namelen, 0);
+
+ /* FIXME: This is a repeat of logic in gv_fetchpvn_flags */
+ /* If the containing stash has multiple effective
+ names, see that this one gets them, too. */
+ if (HvAUX(GvSTASH(tmpgv))->xhv_name_count)
+ mro_package_moved(stash, NULL, tmpgv, 1);
+ }
return stash;
}
return gv_fetchpvn_flags(nambeg, len, flags | SvUTF8(name), sv_type);
}
+STATIC void
+S_gv_magicalize_isa(pTHX_ GV *gv)
+{
+ AV* av;
+
+ PERL_ARGS_ASSERT_GV_MAGICALIZE_ISA;
+
+ av = GvAVn(gv);
+ GvMULTI_on(gv);
+ sv_magic(MUTABLE_SV(av), MUTABLE_SV(gv), PERL_MAGIC_isa,
+ NULL, 0);
+}
+
+STATIC void
+S_gv_magicalize_overload(pTHX_ GV *gv)
+{
+ HV* hv;
+
+ PERL_ARGS_ASSERT_GV_MAGICALIZE_OVERLOAD;
+
+ hv = GvHVn(gv);
+ GvMULTI_on(gv);
+ hv_magic(hv, NULL, PERL_MAGIC_overload);
+}
+
GV *
Perl_gv_fetchpvn_flags(pTHX_ const char *nambeg, STRLEN full_len, I32 flags,
const svtype sv_type)
return NULL;
len = name_cursor - name;
- if (len > 0) {
- char smallbuf[128];
- char *tmpbuf;
-
- if (len + 2 <= (I32)sizeof (smallbuf))
- tmpbuf = smallbuf;
- else
+ if (name_cursor > nambeg) { /* Skip for initial :: or ' */
+ const char *key;
+ if (*name_cursor == ':') {
+ key = name;
+ len += 2;
+ } else {
+ char *tmpbuf;
Newx(tmpbuf, len+2, char);
- Copy(name, tmpbuf, len, char);
- tmpbuf[len++] = ':';
- tmpbuf[len++] = ':';
- gvp = (GV**)hv_fetch(stash,tmpbuf,len,add);
+ Copy(name, tmpbuf, len, char);
+ tmpbuf[len++] = ':';
+ tmpbuf[len++] = ':';
+ key = tmpbuf;
+ }
+ gvp = (GV**)hv_fetch(stash, key, len, add);
gv = gvp ? *gvp : NULL;
if (gv && gv != (const GV *)&PL_sv_undef) {
if (SvTYPE(gv) != SVt_PVGV)
- gv_init(gv, stash, tmpbuf, len, (add & GV_ADDMULTI));
+ gv_init(gv, stash, key, len, (add & GV_ADDMULTI));
else
GvMULTI_on(gv);
}
- if (tmpbuf != smallbuf)
- Safefree(tmpbuf);
+ if (key != name)
+ Safefree(key);
if (!gv || gv == (const GV *)&PL_sv_undef)
return NULL;
if (!(stash = GvHV(gv)))
+ {
stash = GvHV(gv) = newHV();
-
- if (!HvNAME_get(stash))
+ if (!HvNAME_get(stash)) {
+ hv_name_set(stash, nambeg, name_cursor-nambeg, 0);
+ /* If the containing stash has multiple effective
+ names, see that this one gets them, too. */
+ if (HvAUX(GvSTASH(gv))->xhv_name_count)
+ mro_package_moved(stash, NULL, gv, 1);
+ }
+ }
+ else if (!HvNAME_get(stash))
hv_name_set(stash, nambeg, name_cursor - nambeg, 0);
}
if (*name_cursor == ':')
name_cursor++;
- name_cursor++;
- name = name_cursor;
+ name = name_cursor+1;
if (name == name_end)
return gv
? gv : MUTABLE_GV(*hv_fetchs(PL_defstash, "main::", TRUE));
(sv_type == SVt_PVAV && !GvIMPORTED_AV(*gvp)) ||
(sv_type == SVt_PVHV && !GvIMPORTED_HV(*gvp)) )
{
- Perl_warn(aTHX_ "Variable \"%c%s\" is not imported",
+ /* diag_listed_as: Variable "%s" is not imported%s */
+ Perl_ck_warner_d(
+ aTHX_ packWARN(WARN_MISC),
+ "Variable \"%c%s\" is not imported",
sv_type == SVt_PVAV ? '@' :
sv_type == SVt_PVHV ? '%' : '$',
name);
if (GvCVu(*gvp))
- Perl_warn(aTHX_ "\t(Did you mean &%s instead?)\n", name);
+ Perl_ck_warner_d(
+ aTHX_ packWARN(WARN_MISC),
+ "\t(Did you mean &%s instead?)\n", name
+ );
stash = NULL;
}
}
if (add) {
GvMULTI_on(gv);
gv_init_sv(gv, sv_type);
- if (len == 1 && (sv_type == SVt_PVHV || sv_type == SVt_PVGV)) {
+ if (len == 1 && stash == PL_defstash
+ && (sv_type == SVt_PVHV || sv_type == SVt_PVGV)) {
if (*name == '!')
require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1);
else if (*name == '-' || *name == '+')
require_tie_mod(gv, name, newSVpvs("Tie::Hash::NamedCapture"), "TIEHASH", 0);
}
+ else if (len == 3 && sv_type == SVt_PVAV
+ && strnEQ(name, "ISA", 3)
+ && (!GvAV(gv) || !SvSMAGICAL(GvAV(gv))))
+ gv_magicalize_isa(gv);
}
return gv;
} else if (no_init) {
faking_it = SvOK(gv);
- if (add & GV_ADDWARN && ckWARN_d(WARN_INTERNAL))
- Perl_warner(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg);
+ if (add & GV_ADDWARN)
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL), "Had to create %s unexpectedly", nambeg);
gv_init(gv, stash, name, len, add & GV_ADDMULTI);
gv_init_sv(gv, faking_it ? SVt_PVCV : sv_type);
GvMULTI_on(gv) ;
/* set up magic where warranted */
- if (len > 1) {
+ if (stash != PL_defstash) { /* not the main stash */
+ /* We only have to check for four names here: EXPORT, ISA, OVERLOAD
+ and VERSION. All the others apply only to the main stash. */
+ if (len > 1) {
+ const char * const name2 = name + 1;
+ switch (*name) {
+ case 'E':
+ if (strnEQ(name2, "XPORT", 5))
+ GvMULTI_on(gv);
+ break;
+ case 'I':
+ if (strEQ(name2, "SA"))
+ gv_magicalize_isa(gv);
+ break;
+ case 'O':
+ if (strEQ(name2, "VERLOAD"))
+ gv_magicalize_overload(gv);
+ break;
+ case 'V':
+ if (strEQ(name2, "ERSION"))
+ GvMULTI_on(gv);
+ break;
+ }
+ }
+ }
+ else if (len > 1) {
#ifndef EBCDIC
if (*name > 'V' ) {
NOOP;
break;
case 'I':
if (strEQ(name2, "SA")) {
- AV* const av = GvAVn(gv);
- GvMULTI_on(gv);
- sv_magic(MUTABLE_SV(av), MUTABLE_SV(gv), PERL_MAGIC_isa,
- NULL, 0);
- /* NOTE: No support for tied ISA */
- if ((add & GV_ADDMULTI) && strEQ(nambeg,"AnyDBM_File::ISA")
- && AvFILLp(av) == -1)
- {
- av_push(av, newSVpvs("NDBM_File"));
- gv_stashpvs("NDBM_File", GV_ADD);
- av_push(av, newSVpvs("DB_File"));
- gv_stashpvs("DB_File", GV_ADD);
- av_push(av, newSVpvs("GDBM_File"));
- gv_stashpvs("GDBM_File", GV_ADD);
- av_push(av, newSVpvs("SDBM_File"));
- gv_stashpvs("SDBM_File", GV_ADD);
- av_push(av, newSVpvs("ODBM_File"));
- gv_stashpvs("ODBM_File", GV_ADD);
- }
+ gv_magicalize_isa(gv);
}
break;
case 'O':
if (strEQ(name2, "VERLOAD")) {
- HV* const hv = GvHVn(gv);
- GvMULTI_on(gv);
- hv_magic(hv, NULL, PERL_MAGIC_overload);
+ gv_magicalize_overload(gv);
}
break;
case 'S':
if (strEQ(name2, "IG")) {
HV *hv;
I32 i;
- if (!PL_psig_ptr) {
- Newxz(PL_psig_ptr, SIG_SIZE, SV*);
- Newxz(PL_psig_name, SIG_SIZE, SV*);
+ if (!PL_psig_name) {
+ Newxz(PL_psig_name, 2 * SIG_SIZE, SV*);
Newxz(PL_psig_pend, SIG_SIZE, int);
+ PL_psig_ptr = PL_psig_name + SIG_SIZE;
+ } else {
+ /* I think that the only way to get here is to re-use an
+ embedded perl interpreter, where the previous
+ use didn't clean up fully because
+ PL_perl_destruct_level was 0. I'm not sure that we
+ "support" that, in that I suspect in that scenario
+ there are sufficient other garbage values left in the
+ interpreter structure that something else will crash
+ before we get here. I suspect that this is one of
+ those "doctor, it hurts when I do this" bugs. */
+ Zero(PL_psig_name, 2 * SIG_SIZE, SV*);
+ Zero(PL_psig_pend, SIG_SIZE, int);
}
GvMULTI_on(gv);
hv = GvHVn(gv);
SV * const * const init = hv_fetch(hv, PL_sig_name[i], strlen(PL_sig_name[i]), 1);
if (init)
sv_setsv(*init, &PL_sv_undef);
- PL_psig_ptr[i] = 0;
- PL_psig_name[i] = 0;
- PL_psig_pend[i] = 0;
}
}
break;
if (strEQ(name2, "NCODING"))
goto magicalize;
break;
+ case '\007': /* $^GLOBAL_PHASE */
+ if (strEQ(name2, "LOBAL_PHASE"))
+ goto ro_magicalize;
+ break;
case '\015': /* $^MATCH */
if (strEQ(name2, "ATCH"))
goto magicalize;
break;
case '\020': /* $^PREMATCH $^POSTMATCH */
if (strEQ(name2, "REMATCH") || strEQ(name2, "OSTMATCH"))
- goto magicalize;
+ goto magicalize;
+ break;
case '\024': /* ${^TAINT} */
if (strEQ(name2, "AINT"))
goto ro_magicalize;
/* Names of length 1. (Or 0. But name is NUL terminated, so that will
be case '\0' in this switch statement (ie a default case) */
switch (*name) {
- case '&':
- case '`':
- case '\'':
+ case '&': /* $& */
+ case '`': /* $` */
+ case '\'': /* $' */
if (
sv_type == SVt_PVAV ||
sv_type == SVt_PVHV ||
PL_sawampersand = TRUE;
goto magicalize;
- case ':':
+ case ':': /* $: */
sv_setpv(GvSVn(gv),PL_chopset);
goto magicalize;
- case '?':
+ case '?': /* $? */
#ifdef COMPLEX_STATUS
SvUPGRADE(GvSVn(gv), SVt_PVLV);
#endif
goto magicalize;
- case '!':
+ case '!': /* $! */
GvMULTI_on(gv);
/* If %! has been used, automatically load Errno.pm. */
require_tie_mod(gv, "!", newSVpvs("Errno"), "TIEHASH", 1);
break;
- case '-':
- case '+':
+ case '-': /* $- */
+ case '+': /* $+ */
GvMULTI_on(gv); /* no used once warnings here */
{
AV* const av = GvAVn(gv);
break;
}
- case '*':
- case '#':
- if (sv_type == SVt_PV && ckWARN2_d(WARN_DEPRECATED, WARN_SYNTAX))
- Perl_warner(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
- "$%c is no longer supported", *name);
+ case '*': /* $* */
+ case '#': /* $# */
+ if (sv_type == SVt_PV)
+ Perl_ck_warner_d(aTHX_ packWARN2(WARN_DEPRECATED, WARN_SYNTAX),
+ "$%c is no longer supported", *name);
break;
- case '|':
+ case '|': /* $| */
sv_setiv(GvSVn(gv), (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0);
goto magicalize;
ro_magicalize:
SvREADONLY_on(GvSVn(gv));
/* FALL THROUGH */
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- case '[':
- case '^':
- case '~':
- case '=':
- case '%':
- case '.':
- case '(':
- case ')':
- case '<':
- case '>':
- case '\\':
- case '/':
+ case '0': /* $0 */
+ case '1': /* $1 */
+ case '2': /* $2 */
+ case '3': /* $3 */
+ case '4': /* $4 */
+ case '5': /* $5 */
+ case '6': /* $6 */
+ case '7': /* $7 */
+ case '8': /* $8 */
+ case '9': /* $9 */
+ case '[': /* $[ */
+ case '^': /* $^ */
+ case '~': /* $~ */
+ case '=': /* $= */
+ case '%': /* $% */
+ case '.': /* $. */
+ case '(': /* $( */
+ case ')': /* $) */
+ case '<': /* $< */
+ case '>': /* $> */
+ case '\\': /* $\ */
+ case '/': /* $/ */
case '\001': /* $^A */
case '\003': /* $^C */
case '\004': /* $^D */
sv_setpvs(GvSVn(gv),"\f");
PL_formfeed = GvSVn(gv);
break;
- case ';':
+ case ';': /* $; */
sv_setpvs(GvSVn(gv),"\034");
break;
- case ']':
+ case ']': /* $] */
{
SV * const sv = GvSVn(gv);
if (!sv_derived_from(PL_patchlevel, "version"))
void
Perl_gv_efullname4(pTHX_ SV *sv, const GV *gv, const char *prefix, bool keepmain)
{
- const GV * const egv = GvEGV(gv);
+ const GV * const egv = GvEGVx(gv);
PERL_ARGS_ASSERT_GV_EFULLNAME4;
gv_fullname4(sv, egv ? egv : gv, prefix, keepmain);
}
-IO *
-Perl_newIO(pTHX)
-{
- dVAR;
- GV *iogv;
- IO * const io = MUTABLE_IO(newSV_type(SVt_PVIO));
- /* This used to read SvREFCNT(io) = 1;
- It's not clear why the reference count needed an explicit reset. NWC
- */
- assert (SvREFCNT(io) == 1);
- SvOBJECT_on(io);
- /* Clear the stashcache because a new IO could overrule a package name */
- hv_clear(PL_stashcache);
- iogv = gv_fetchpvs("FileHandle::", 0, SVt_PVHV);
- /* unless exists($main::{FileHandle}) and defined(%main::FileHandle::) */
- if (!(iogv && GvHV(iogv) && HvARRAY(GvHV(iogv))))
- iogv = gv_fetchpvs("IO::Handle::", GV_ADD, SVt_PVHV);
- SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
- return io;
-}
-
void
Perl_gv_check(pTHX_ const HV *stash)
{
{
dVAR;
GP* gp;
+ int attempts = 100;
if (!gv || !isGV_with_GP(gv) || !(gp = GvGP(gv)))
return;
if (gp->gp_refcnt == 0) {
- if (ckWARN_d(WARN_INTERNAL))
- Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
- "Attempt to free unreferenced glob pointers"
- pTHX__FORMAT pTHX__VALUE);
+ Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
+ "Attempt to free unreferenced glob pointers"
+ pTHX__FORMAT pTHX__VALUE);
return;
}
if (--gp->gp_refcnt > 0) {
if (gp->gp_egv == gv)
gp->gp_egv = 0;
- GvGP(gv) = 0;
+ GvGP_set(gv, NULL);
return;
}
- if (gp->gp_file_hek)
- unshare_hek(gp->gp_file_hek);
- SvREFCNT_dec(gp->gp_sv);
- SvREFCNT_dec(gp->gp_av);
- /* FIXME - another reference loop GV -> symtab -> GV ?
- Somehow gp->gp_hv can end up pointing at freed garbage. */
- if (gp->gp_hv && SvTYPE(gp->gp_hv) == SVt_PVHV) {
- const char *hvname = HvNAME_get(gp->gp_hv);
+ while (1) {
+ /* Copy and null out all the glob slots, so destructors do not see
+ freed SVs. */
+ HEK * const file_hek = gp->gp_file_hek;
+ SV * const sv = gp->gp_sv;
+ AV * const av = gp->gp_av;
+ HV * const hv = gp->gp_hv;
+ IO * const io = gp->gp_io;
+ CV * const cv = gp->gp_cv;
+ CV * const form = gp->gp_form;
+
+ gp->gp_file_hek = NULL;
+ gp->gp_sv = NULL;
+ gp->gp_av = NULL;
+ gp->gp_hv = NULL;
+ gp->gp_io = NULL;
+ gp->gp_cv = NULL;
+ gp->gp_form = NULL;
+
+ if (file_hek)
+ unshare_hek(file_hek);
+
+ SvREFCNT_dec(sv);
+ SvREFCNT_dec(av);
+ /* FIXME - another reference loop GV -> symtab -> GV ?
+ Somehow gp->gp_hv can end up pointing at freed garbage. */
+ if (hv && SvTYPE(hv) == SVt_PVHV) {
+ const char *hvname = HvNAME_get(hv);
if (PL_stashcache && hvname)
- (void)hv_delete(PL_stashcache, hvname, HvNAMELEN_get(gp->gp_hv),
+ (void)hv_delete(PL_stashcache, hvname, HvNAMELEN_get(hv),
G_DISCARD);
- SvREFCNT_dec(gp->gp_hv);
+ SvREFCNT_dec(hv);
+ }
+ SvREFCNT_dec(io);
+ SvREFCNT_dec(cv);
+ SvREFCNT_dec(form);
+
+ if (!gp->gp_file_hek
+ && !gp->gp_sv
+ && !gp->gp_av
+ && !gp->gp_hv
+ && !gp->gp_io
+ && !gp->gp_cv
+ && !gp->gp_form) break;
+
+ if (--attempts == 0) {
+ Perl_die(aTHX_
+ "panic: gp_free failed to free glob pointer - "
+ "something is repeatedly re-creating entries"
+ );
+ }
}
- SvREFCNT_dec(gp->gp_io);
- SvREFCNT_dec(gp->gp_cv);
- SvREFCNT_dec(gp->gp_form);
Safefree(gp);
- GvGP(gv) = 0;
+ GvGP_set(gv, NULL);
}
int
}
/* Updates and caches the CV's */
+/* Returns:
+ * 1 on success and there is some overload
+ * 0 if there is no overload
+ * -1 if some error occurred and it couldn't croak
+ */
-bool
-Perl_Gv_AMupdate(pTHX_ HV *stash)
+int
+Perl_Gv_AMupdate(pTHX_ HV *stash, bool destructing)
{
dVAR;
MAGIC* const mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
const AMT * const amtp = (AMT*)mg->mg_ptr;
if (amtp->was_ok_am == PL_amagic_generation
&& amtp->was_ok_sub == newgen) {
- return (bool)AMT_OVERLOADED(amtp);
+ return AMT_OVERLOADED(amtp) ? 1 : 0;
}
sv_unmagic(MUTABLE_SV(stash), PERL_MAGIC_overload_table);
}
FALSE)))
{
/* Can be an import stub (created by "can"). */
- const char * const name = (gvsv && SvPOK(gvsv)) ? SvPVX_const(gvsv) : "???";
- Perl_croak(aTHX_ "%s method \"%.256s\" overloading \"%s\" "\
- "in package \"%.256s\"",
- (GvCVGEN(gv) ? "Stub found while resolving"
- : "Can't resolve"),
- name, cp, hvname);
+ if (destructing) {
+ return -1;
+ }
+ else {
+ const char * const name = (gvsv && SvPOK(gvsv)) ? SvPVX_const(gvsv) : "???";
+ Perl_croak(aTHX_ "%s method \"%.256s\" overloading \"%s\" "\
+ "in package \"%.256s\"",
+ (GvCVGEN(gv) ? "Stub found while resolving"
+ : "Can't resolve"),
+ name, cp, hvname);
+ }
}
cv = GvCV(gv = ngv);
}
AMT_AMAGIC_off(&amt);
sv_magic(MUTABLE_SV(stash), 0, PERL_MAGIC_overload_table,
(char*)&amt, sizeof(AMTS));
- return FALSE;
+ return 0;
}
mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
if (!mg) {
do_update:
- Gv_AMupdate(stash);
+ /* If we're looking up a destructor to invoke, we must avoid
+ * that Gv_AMupdate croaks, because we might be dying already */
+ if (Gv_AMupdate(stash, cBOOL(id == DESTROY_amg)) == -1) {
+ /* and if it didn't found a destructor, we fall back
+ * to a simpler method that will only look for the
+ * destructor instead of the whole magic */
+ if (id == DESTROY_amg) {
+ GV * const gv = gv_fetchmethod(stash, "DESTROY");
+ if (gv)
+ return GvCV(gv);
+ }
+ return NULL;
+ }
mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table);
}
assert(mg);
}
+/* Implement tryAMAGICun_MG macro.
+ Do get magic, then see if the stack arg is overloaded and if so call it.
+ Flags:
+ AMGf_set return the arg using SETs rather than assigning to
+ the targ
+ AMGf_numeric apply sv_2num to the stack arg.
+*/
+
+bool
+Perl_try_amagic_un(pTHX_ int method, int flags) {
+ dVAR;
+ dSP;
+ SV* tmpsv;
+ SV* const arg = TOPs;
+
+ SvGETMAGIC(arg);
+
+ if (SvAMAGIC(arg) && (tmpsv = amagic_call(arg, &PL_sv_undef, method,
+ AMGf_noright | AMGf_unary))) {
+ if (flags & AMGf_set) {
+ SETs(tmpsv);
+ }
+ else {
+ dTARGET;
+ if (SvPADMY(TARG)) {
+ sv_setsv(TARG, tmpsv);
+ SETTARG;
+ }
+ else
+ SETs(tmpsv);
+ }
+ PUTBACK;
+ return TRUE;
+ }
+
+ if ((flags & AMGf_numeric) && SvROK(arg))
+ *sp = sv_2num(arg);
+ return FALSE;
+}
+
+
+/* Implement tryAMAGICbin_MG macro.
+ Do get magic, then see if the two stack args are overloaded and if so
+ call it.
+ Flags:
+ AMGf_set return the arg using SETs rather than assigning to
+ the targ
+ AMGf_assign op may be called as mutator (eg +=)
+ AMGf_numeric apply sv_2num to the stack arg.
+*/
+
+bool
+Perl_try_amagic_bin(pTHX_ int method, int flags) {
+ dVAR;
+ dSP;
+ SV* const left = TOPm1s;
+ SV* const right = TOPs;
+
+ SvGETMAGIC(left);
+ if (left != right)
+ SvGETMAGIC(right);
+
+ if (SvAMAGIC(left) || SvAMAGIC(right)) {
+ SV * const tmpsv = amagic_call(left, right, method,
+ ((flags & AMGf_assign) && opASSIGN ? AMGf_assign: 0));
+ if (tmpsv) {
+ if (flags & AMGf_set) {
+ (void)POPs;
+ SETs(tmpsv);
+ }
+ else {
+ dATARGET;
+ (void)POPs;
+ if (opASSIGN || SvPADMY(TARG)) {
+ sv_setsv(TARG, tmpsv);
+ SETTARG;
+ }
+ else
+ SETs(tmpsv);
+ }
+ PUTBACK;
+ return TRUE;
+ }
+ }
+ if(left==right && SvGMAGICAL(left)) {
+ SV * const left = sv_newmortal();
+ *(sp-1) = left;
+ /* Print the uninitialized warning now, so it includes the vari-
+ able name. */
+ if (!SvOK(right)) {
+ if (ckWARN(WARN_UNINITIALIZED)) report_uninit(right);
+ sv_setsv_flags(left, &PL_sv_no, 0);
+ }
+ else sv_setsv_flags(left, right, 0);
+ SvGETMAGIC(right);
+ }
+ if (flags & AMGf_numeric) {
+ if (SvROK(TOPm1s))
+ *(sp-1) = sv_2num(TOPm1s);
+ if (SvROK(right))
+ *sp = sv_2num(right);
+ }
+ return FALSE;
+}
+
+SV *
+Perl_amagic_deref_call(pTHX_ SV *ref, int method) {
+ SV *tmpsv = NULL;
+
+ PERL_ARGS_ASSERT_AMAGIC_DEREF_CALL;
+
+ while (SvAMAGIC(ref) &&
+ (tmpsv = amagic_call(ref, &PL_sv_undef, method,
+ AMGf_noright | AMGf_unary))) {
+ if (!SvROK(tmpsv))
+ Perl_croak(aTHX_ "Overloaded dereference did not return a reference");
+ if (tmpsv == ref || SvRV(tmpsv) == SvRV(ref)) {
+ /* Bail out if it returns us the same reference. */
+ return tmpsv;
+ }
+ ref = tmpsv;
+ }
+ return tmpsv ? tmpsv : ref;
+}
+
SV*
Perl_amagic_call(pTHX_ SV *left, SV *right, int method, int flags)
{
int postpr = 0, force_cpy = 0;
int assign = AMGf_assign & flags;
const int assignshift = assign ? 1 : 0;
+ int use_default_op = 0;
#ifdef DEBUGGING
int fl=0;
#endif
PERL_ARGS_ASSERT_AMAGIC_CALL;
+ if ( PL_curcop->cop_hints & HINT_NO_AMAGIC ) {
+ SV *lex_mask = cop_hints_fetch_pvs(PL_curcop, "overloading", 0);
+
+ if ( !lex_mask || !SvOK(lex_mask) )
+ /* overloading lexically disabled */
+ return NULL;
+ else if ( lex_mask && SvPOK(lex_mask) ) {
+ /* we have an entry in the hints hash, check if method has been
+ * masked by overloading.pm */
+ STRLEN len;
+ const int offset = method / 8;
+ const int bit = method % 8;
+ char *pv = SvPV(lex_mask, len);
+
+ /* Bit set, so this overloading operator is disabled */
+ if ( (STRLEN)offset < len && pv[offset] & ( 1 << bit ) )
+ return NULL;
+ }
+ }
+
if (!(AMGf_noleft & flags) && SvAMAGIC(left)
&& (stash = SvSTASH(SvRV(left)))
&& (mg = mg_find((const SV *)stash, PERL_MAGIC_overload_table))
(void)((cv = cvp[off=bool__amg])
|| (cv = cvp[off=numer_amg])
|| (cv = cvp[off=string_amg]));
- postpr = 1;
+ if (cv)
+ postpr = 1;
break;
case copy_amg:
{
break;
case int_amg:
case iter_amg: /* XXXX Eventually should do to_gv. */
+ case ftest_amg: /* XXXX Eventually should do to_gv. */
+ case regexp_amg:
/* FAIL safe */
return NULL; /* Delegate operation to standard mechanisms. */
break;
&& (cv = cvp[off=method])) { /* Method for right
* argument found */
lr=1;
- } else if (((ocvp && oamtp->fallback > AMGfallNEVER
- && (cvp=ocvp) && (lr = -1))
- || (cvp && amtp->fallback > AMGfallNEVER && (lr=1)))
+ } else if (((cvp && amtp->fallback > AMGfallNEVER)
+ || (ocvp && oamtp->fallback > AMGfallNEVER))
&& !(flags & AMGf_unary)) {
/* We look for substitution for
* comparison operations and
case ge_amg:
case eq_amg:
case ne_amg:
- postpr = 1; off=ncmp_amg; break;
+ off = ncmp_amg;
+ break;
case slt_amg:
case sle_amg:
case sgt_amg:
case sge_amg:
case seq_amg:
case sne_amg:
- postpr = 1; off=scmp_amg; break;
+ off = scmp_amg;
+ break;
}
- if (off != -1) cv = cvp[off];
- if (!cv) {
- goto not_found;
+ if (off != -1) {
+ if (ocvp && (oamtp->fallback > AMGfallNEVER)) {
+ cv = ocvp[off];
+ lr = -1;
+ }
+ if (!cv && (cvp && amtp->fallback > AMGfallNEVER)) {
+ cv = cvp[off];
+ lr = 1;
+ }
}
+ if (cv)
+ postpr = 1;
+ else
+ goto not_found;
} else {
not_found: /* No method found, either report or croak */
switch (method) {
- case lt_amg:
- case le_amg:
- case gt_amg:
- case ge_amg:
- case eq_amg:
- case ne_amg:
- case slt_amg:
- case sle_amg:
- case sgt_amg:
- case sge_amg:
- case seq_amg:
- case sne_amg:
- postpr = 0; break;
case to_sv_amg:
case to_av_amg:
case to_hv_amg:
notfound = 1; lr = -1;
} else if (cvp && (cv=cvp[nomethod_amg])) {
notfound = 1; lr = 1;
- } else if ((amtp && amtp->fallback >= AMGfallYES) && !DEBUG_o_TEST) {
+ } else if ((use_default_op =
+ (!ocvp || oamtp->fallback >= AMGfallYES)
+ && (!cvp || amtp->fallback >= AMGfallYES))
+ && !DEBUG_o_TEST) {
/* Skip generating the "no method found" message. */
return NULL;
} else {
SvAMAGIC(right)?
HvNAME_get(SvSTASH(SvRV(right))):
""));
- if (amtp && amtp->fallback >= AMGfallYES) {
+ if (use_default_op) {
DEBUG_o( Perl_deb(aTHX_ "%s", SvPVX_const(msg)) );
} else {
Perl_croak(aTHX_ "%"SVf, SVfARG(msg));
if (( (method + assignshift == off)
&& (assign || (method == inc_amg) || (method == dec_amg)))
|| force_cpy)
- RvDEEPCP(left);
+ {
+ /* newSVsv does not behave as advertised, so we copy missing
+ * information by hand */
+ SV *tmpRef = SvRV(left);
+ SV *rv_copy;
+ if (SvREFCNT(tmpRef) > 1 && (rv_copy = AMG_CALLunary(left,copy_amg))) {
+ SvRV_set(left, rv_copy);
+ SvSETMAGIC(left);
+ SvREFCNT_dec(tmpRef);
+ }
+ }
+
{
dSP;
BINOP myop;
if (PERLDB_SUB && PL_curstash != PL_debstash)
PL_op->op_private |= OPpENTERSUB_DB;
PUTBACK;
- pp_pushmark();
+ Perl_pp_pushmark(aTHX);
EXTEND(SP, notfound + 5);
PUSHs(lr>0? right: left);
/*
=for apidoc is_gv_magical_sv
-Returns C<TRUE> if given the name of a magical GV. Calls is_gv_magical.
-
-=cut
-*/
-
-bool
-Perl_is_gv_magical_sv(pTHX_ SV *name, U32 flags)
-{
- STRLEN len;
- const char * const temp = SvPV_const(name, len);
-
- PERL_ARGS_ASSERT_IS_GV_MAGICAL_SV;
-
- return is_gv_magical(temp, len, flags);
-}
-
-/*
-=for apidoc is_gv_magical
-
Returns C<TRUE> if given the name of a magical GV.
Currently only useful internally when determining if a GV should be
=cut
*/
+
bool
-S_is_gv_magical(pTHX_ const char *name, STRLEN len, U32 flags)
+Perl_is_gv_magical_sv(pTHX_ SV *const name_sv, U32 flags)
{
- PERL_UNUSED_CONTEXT;
- PERL_UNUSED_ARG(flags);
+ STRLEN len;
+ const char *const name = SvPV_const(name_sv, len);
- PERL_ARGS_ASSERT_IS_GV_MAGICAL;
+ PERL_UNUSED_ARG(flags);
+ PERL_ARGS_ASSERT_IS_GV_MAGICAL_SV;
if (len > 1) {
const char * const name1 = name + 1;
}
/*
+=for apidoc gv_try_downgrade
+
+If the typeglob C<gv> can be expressed more succinctly, by having
+something other than a real GV in its place in the stash, replace it
+with the optimised form. Basic requirements for this are that C<gv>
+is a real typeglob, is sufficiently ordinary, and is only referenced
+from its package. This function is meant to be used when a GV has been
+looked up in part to see what was there, causing upgrading, but based
+on what was found it turns out that the real GV isn't required after all.
+
+If C<gv> is a completely empty typeglob, it is deleted from the stash.
+
+If C<gv> is a typeglob containing only a sufficiently-ordinary constant
+sub, the typeglob is replaced with a scalar-reference placeholder that
+more compactly represents the same thing.
+
+=cut
+*/
+
+void
+Perl_gv_try_downgrade(pTHX_ GV *gv)
+{
+ HV *stash;
+ CV *cv;
+ HEK *namehek;
+ SV **gvp;
+ PERL_ARGS_ASSERT_GV_TRY_DOWNGRADE;
+
+ /* XXX Why and where does this leave dangling pointers during global
+ destruction? */
+ if (PL_phase == PERL_PHASE_DESTRUCT) return;
+
+ if (!(SvREFCNT(gv) == 1 && SvTYPE(gv) == SVt_PVGV && !SvFAKE(gv) &&
+ !SvOBJECT(gv) && !SvREADONLY(gv) &&
+ isGV_with_GP(gv) && GvGP(gv) &&
+ !GvINTRO(gv) && GvREFCNT(gv) == 1 &&
+ !GvSV(gv) && !GvAV(gv) && !GvHV(gv) && !GvIOp(gv) && !GvFORM(gv) &&
+ GvEGVx(gv) == gv && (stash = GvSTASH(gv))))
+ return;
+ if (SvMAGICAL(gv)) {
+ MAGIC *mg;
+ /* only backref magic is allowed */
+ if (SvGMAGICAL(gv) || SvSMAGICAL(gv))
+ return;
+ for (mg = SvMAGIC(gv); mg; mg = mg->mg_moremagic) {
+ if (mg->mg_type != PERL_MAGIC_backref)
+ return;
+ }
+ }
+ cv = GvCV(gv);
+ if (!cv) {
+ HEK *gvnhek = GvNAME_HEK(gv);
+ (void)hv_delete(stash, HEK_KEY(gvnhek),
+ HEK_UTF8(gvnhek) ? -HEK_LEN(gvnhek) : HEK_LEN(gvnhek), G_DISCARD);
+ } else if (GvMULTI(gv) && cv &&
+ !SvOBJECT(cv) && !SvMAGICAL(cv) && !SvREADONLY(cv) &&
+ CvSTASH(cv) == stash && CvGV(cv) == gv &&
+ CvCONST(cv) && !CvMETHOD(cv) && !CvLVALUE(cv) && !CvUNIQUE(cv) &&
+ !CvNODEBUG(cv) && !CvCLONE(cv) && !CvCLONED(cv) && !CvANON(cv) &&
+ (namehek = GvNAME_HEK(gv)) &&
+ (gvp = hv_fetch(stash, HEK_KEY(namehek),
+ HEK_LEN(namehek)*(HEK_UTF8(namehek) ? -1 : 1), 0)) &&
+ *gvp == (SV*)gv) {
+ SV *value = SvREFCNT_inc(CvXSUBANY(cv).any_ptr);
+ SvREFCNT(gv) = 0;
+ sv_clear((SV*)gv);
+ SvREFCNT(gv) = 1;
+ SvFLAGS(gv) = SVt_IV|SVf_ROK;
+ SvANY(gv) = (XPVGV*)((char*)&(gv->sv_u.svu_iv) -
+ STRUCT_OFFSET(XPVIV, xiv_iv));
+ SvRV_set(gv, value);
+ }
+}
+
+/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
https://perl5.git.perl.org / perl5.git / blobdiff