/*
=head1 Magical Functions
-
"Magic" is special data attached to SV structures in order to give them
"magical" properties. When any Perl code tries to read from, or assign to,
an SV marked as magical, it calls the 'get' or 'set' function associated
-with that SV's magic. A get is called prior to reading an SV, in order to
+with that SV's magic. A get is called prior to reading an SV, in order to
give it a chance to update its internal value (get on $. writes the line
-number of the last read filehandle into to the SV's IV slot), while
+number of the last read filehandle into the SV's IV slot), while
set is called after an SV has been written to, in order to allow it to make
use of its changed value (set on $/ copies the SV's new value to the
PL_rs global variable).
Magic is implemented as a linked list of MAGIC structures attached to the
-SV. Each MAGIC struct holds the type of the magic, a pointer to an array
+SV. Each MAGIC struct holds the type of the magic, a pointer to an array
of functions that implement the get(), set(), length() etc functions,
-plus space for some flags and pointers. For example, a tied variable has
+plus space for some flags and pointers. For example, a tied variable has
a MAGIC structure that contains a pointer to the object associated with the
tie.
+=cut
+
*/
#include "EXTERN.h"
struct magic_state {
SV* mgs_sv;
I32 mgs_ss_ix;
- U32 mgs_magical;
- bool mgs_readonly;
+ U32 mgs_flags;
bool mgs_bumped;
};
/* MGS is typedef'ed to struct magic_state in perl.h */
STATIC void
S_save_magic_flags(pTHX_ I32 mgs_ix, SV *sv, U32 flags)
{
- dVAR;
MGS* mgs;
bool bumped = FALSE;
mgs = SSPTR(mgs_ix, MGS*);
mgs->mgs_sv = sv;
- mgs->mgs_magical = SvMAGICAL(sv);
- mgs->mgs_readonly = SvREADONLY(sv) != 0;
+ mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
mgs->mgs_bumped = bumped;
/*
=for apidoc mg_magical
-Turns on the magical status of an SV. See C<sv_magic>.
+Turns on the magical status of an SV. See C<L</sv_magic>>.
=cut
*/
void
-Perl_mg_magical(pTHX_ SV *sv)
+Perl_mg_magical(SV *sv)
{
const MAGIC* mg;
PERL_ARGS_ASSERT_MG_MAGICAL;
- PERL_UNUSED_CONTEXT;
SvMAGICAL_off(sv);
if ((mg = SvMAGIC(sv))) {
=for apidoc mg_get
Do magic before a value is retrieved from the SV. The type of SV must
-be >= SVt_PVMG. See C<sv_magic>.
+be >= C<SVt_PVMG>. See C<L</sv_magic>>.
=cut
*/
int
Perl_mg_get(pTHX_ SV *sv)
{
- dVAR;
const I32 mgs_ix = SSNEW(sizeof(MGS));
bool saved = FALSE;
bool have_new = 0;
+ bool taint_only = TRUE; /* the only get method seen is taint */
MAGIC *newmg, *head, *cur, *mg;
PERL_ARGS_ASSERT_MG_GET;
if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
/* taint's mg get is so dumb it doesn't need flag saving */
- if (!saved && mg->mg_type != PERL_MAGIC_taint) {
- save_magic(mgs_ix, sv);
- saved = TRUE;
- }
+ if (mg->mg_type != PERL_MAGIC_taint) {
+ taint_only = FALSE;
+ if (!saved) {
+ save_magic(mgs_ix, sv);
+ saved = TRUE;
+ }
+ }
vtbl->svt_get(aTHX_ sv, mg);
/* guard against magic having been deleted - eg FETCH calling
* untie */
if (!SvMAGIC(sv)) {
- (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */
+ /* recalculate flags */
+ (SSPTR(mgs_ix, MGS *))->mgs_flags &= ~(SVs_GMG|SVs_SMG|SVs_RMG);
break;
}
/* recalculate flags if this entry was deleted. */
if (mg->mg_flags & MGf_GSKIP)
- (SSPTR(mgs_ix, MGS *))->mgs_magical = 0;
+ (SSPTR(mgs_ix, MGS *))->mgs_flags &=
+ ~(SVs_GMG|SVs_SMG|SVs_RMG);
}
else if (vtbl == &PL_vtbl_utf8) {
- /* get-magic can reallocate the PV */
- magic_setutf8(sv, mg);
+ /* get-magic can reallocate the PV, unless there's only taint
+ * magic */
+ if (taint_only) {
+ MAGIC *mg2;
+ for (mg2 = nextmg; mg2; mg2 = mg2->mg_moremagic) {
+ if ( mg2->mg_type != PERL_MAGIC_taint
+ && !(mg2->mg_flags & MGf_GSKIP)
+ && mg2->mg_virtual
+ && mg2->mg_virtual->svt_get
+ ) {
+ taint_only = FALSE;
+ break;
+ }
+ }
+ }
+ if (!taint_only)
+ magic_setutf8(sv, mg);
}
mg = nextmg;
have_new = 1;
cur = mg;
mg = newmg;
- (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */
+ /* recalculate flags */
+ (SSPTR(mgs_ix, MGS *))->mgs_flags &= ~(SVs_GMG|SVs_SMG|SVs_RMG);
}
}
/*
=for apidoc mg_set
-Do magic after a value is assigned to the SV. See C<sv_magic>.
+Do magic after a value is assigned to the SV. See C<L</sv_magic>>.
=cut
*/
int
Perl_mg_set(pTHX_ SV *sv)
{
- dVAR;
const I32 mgs_ix = SSNEW(sizeof(MGS));
MAGIC* mg;
MAGIC* nextmg;
nextmg = mg->mg_moremagic; /* it may delete itself */
if (mg->mg_flags & MGf_GSKIP) {
mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
- (SSPTR(mgs_ix, MGS*))->mgs_magical = 0;
+ (SSPTR(mgs_ix, MGS*))->mgs_flags &= ~(SVs_GMG|SVs_SMG|SVs_RMG);
}
if (PL_localizing == 2
&& PERL_MAGIC_TYPE_IS_VALUE_MAGIC(mg->mg_type))
=for apidoc mg_length
Reports on the SV's length in bytes, calling length magic if available,
-but does not set the UTF8 flag on the sv. It will fall back to 'get'
+but does not set the UTF8 flag on C<sv>. It will fall back to 'get'
magic if there is no 'length' magic, but with no indication as to
-whether it called 'get' magic. It assumes the sv is a PVMG or
-higher. Use sv_len() instead.
+whether it called 'get' magic. It assumes C<sv> is a C<PVMG> or
+higher. Use C<sv_len()> instead.
=cut
*/
U32
Perl_mg_length(pTHX_ SV *sv)
{
- dVAR;
MAGIC* mg;
STRLEN len;
/* FIXME */
default:
Perl_croak(aTHX_ "Size magic not implemented");
- break;
+
}
- return 0;
+ NOT_REACHED; /* NOTREACHED */
}
/*
=for apidoc mg_clear
-Clear something magical that the SV represents. See C<sv_magic>.
+Clear something magical that the SV represents. See C<L</sv_magic>>.
=cut
*/
}
static MAGIC*
-S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags)
+S_mg_findext_flags(const SV *sv, int type, const MGVTBL *vtbl, U32 flags)
{
- PERL_UNUSED_CONTEXT;
-
assert(flags <= 1);
if (sv) {
MAGIC *mg;
- assert(!(SvTYPE(sv) == SVt_PVAV && AvPAD_NAMELIST(sv)));
-
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) {
return mg;
/*
=for apidoc mg_find
-Finds the magic pointer for type matching the SV. See C<sv_magic>.
+Finds the magic pointer for C<type> matching the SV. See C<L</sv_magic>>.
=cut
*/
MAGIC*
-Perl_mg_find(pTHX_ const SV *sv, int type)
+Perl_mg_find(const SV *sv, int type)
{
- return S_mg_findext_flags(aTHX_ sv, type, NULL, 0);
+ return S_mg_findext_flags(sv, type, NULL, 0);
}
/*
=for apidoc mg_findext
Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See
-C<sv_magicext>.
+C<L</sv_magicext>>.
=cut
*/
MAGIC*
-Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl)
+Perl_mg_findext(const SV *sv, int type, const MGVTBL *vtbl)
{
- return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1);
+ return S_mg_findext_flags(sv, type, vtbl, 1);
}
MAGIC *
sv = LvTARG(sv);
}
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
- return S_mg_findext_flags(aTHX_ sv, PERL_MAGIC_regex_global, 0, 0);
+ return S_mg_findext_flags(sv, PERL_MAGIC_regex_global, 0, 0);
return NULL;
}
/*
=for apidoc mg_copy
-Copies the magic from one SV to another. See C<sv_magic>.
+Copies the magic from one SV to another. See C<L</sv_magic>>.
=cut
*/
sv_magic(nsv,
(type == PERL_MAGIC_tied)
? SvTIED_obj(sv, mg)
- : (type == PERL_MAGIC_regdata && mg->mg_obj)
- ? sv
- : mg->mg_obj,
+ : mg->mg_obj,
toLOWER(type), key, klen);
count++;
}
=for apidoc mg_localize
Copy some of the magic from an existing SV to new localized version of that
-SV. Container magic (eg %ENV, $1, tie) gets copied, value magic doesn't (eg
-taint, pos).
+SV. Container magic (I<e.g.>, C<%ENV>, C<$1>, C<tie>)
+gets copied, value magic doesn't (I<e.g.>,
+C<taint>, C<pos>).
-If setmagic is false then no set magic will be called on the new (empty) SV.
-This typically means that assignment will soon follow (e.g. 'local $x = $y'),
+If C<setmagic> is false then no set magic will be called on the new (empty) SV.
+This typically means that assignment will soon follow (e.g. S<C<'local $x = $y'>>),
and that will handle the magic.
=cut
void
Perl_mg_localize(pTHX_ SV *sv, SV *nsv, bool setmagic)
{
- dVAR;
MAGIC *mg;
PERL_ARGS_ASSERT_MG_LOCALIZE;
const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl && vtbl->svt_free)
vtbl->svt_free(aTHX_ sv, mg);
- if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
+
+ if (mg->mg_type == PERL_MAGIC_collxfrm && mg->mg_len >= 0)
+ /* collate magic uses string len not buffer len, so
+ * free even with mg_len == 0 */
+ Safefree(mg->mg_ptr);
+ else if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8)
Safefree(mg->mg_ptr);
else if (mg->mg_len == HEf_SVKEY)
SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr));
}
+
if (mg->mg_flags & MGf_REFCOUNTED)
SvREFCNT_dec(mg->mg_obj);
Safefree(mg);
/*
=for apidoc mg_free
-Free any magic storage used by the SV. See C<sv_magic>.
+Free any magic storage used by the SV. See C<L</sv_magic>>.
=cut
*/
}
/*
-=for apidoc Am|void|mg_free_type|SV *sv|int how
+=for apidoc mg_free_type
-Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>.
+Remove any magic of type C<how> from the SV C<sv>. See L</sv_magic>.
=cut
*/
MAGIC *mg, *prevmg, *moremg;
PERL_ARGS_ASSERT_MG_FREE_TYPE;
for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) {
- MAGIC *newhead;
moremg = mg->mg_moremagic;
if (mg->mg_type == how) {
+ MAGIC *newhead;
+ /* temporarily move to the head of the magic chain, in case
+ custom free code relies on this historical aspect of mg_free */
+ if (prevmg) {
+ prevmg->mg_moremagic = moremg;
+ mg->mg_moremagic = SvMAGIC(sv);
+ SvMAGIC_set(sv, mg);
+ }
+ newhead = mg->mg_moremagic;
+ mg_free_struct(sv, mg);
+ SvMAGIC_set(sv, newhead);
+ mg = prevmg;
+ }
+ }
+ mg_magical(sv);
+}
+
+/*
+=for apidoc mg_freeext
+
+Remove any magic of type C<how> using virtual table C<vtbl> from the
+SV C<sv>. See L</sv_magic>.
+
+C<mg_freeext(sv, how, NULL)> is equivalent to C<mg_free_type(sv, how)>.
+
+=cut
+*/
+
+void
+Perl_mg_freeext(pTHX_ SV *sv, int how, const MGVTBL *vtbl)
+{
+ MAGIC *mg, *prevmg, *moremg;
+ PERL_ARGS_ASSERT_MG_FREEEXT;
+ for (prevmg = NULL, mg = SvMAGIC(sv); mg; prevmg = mg, mg = moremg) {
+ MAGIC *newhead;
+ moremg = mg->mg_moremagic;
+ if (mg->mg_type == how && (vtbl == NULL || mg->mg_virtual == vtbl)) {
/* temporarily move to the head of the magic chain, in case
custom free code relies on this historical aspect of mg_free */
if (prevmg) {
U32
Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
PERL_UNUSED_ARG(sv);
PERL_ARGS_ASSERT_MAGIC_REGDATA_CNT;
if (PL_curpm) {
- const REGEXP * const rx = PM_GETRE(PL_curpm);
+ REGEXP * const rx = PM_GETRE(PL_curpm);
if (rx) {
- if (mg->mg_obj) { /* @+ */
+ const SSize_t n = (SSize_t)mg->mg_obj;
+ if (n == '+') { /* @+ */
/* return the number possible */
return RX_NPARENS(rx);
- } else { /* @- */
+ } else { /* @- @^CAPTURE @{^CAPTURE} */
I32 paren = RX_LASTPAREN(rx);
/* return the last filled */
&& (RX_OFFS(rx)[paren].start == -1
|| RX_OFFS(rx)[paren].end == -1) )
paren--;
- return (U32)paren;
- }
+ if (n == '-') {
+ /* @- */
+ return (U32)paren;
+ } else {
+ /* @^CAPTURE @{^CAPTURE} */
+ return paren >= 0 ? (U32)(paren-1) : (U32)-1;
+ }
+ }
}
}
int
Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_REGDATUM_GET;
if (PL_curpm) {
- const REGEXP * const rx = PM_GETRE(PL_curpm);
+ REGEXP * const rx = PM_GETRE(PL_curpm);
if (rx) {
- const I32 paren = mg->mg_len;
- I32 s;
- I32 t;
+ const SSize_t n = (SSize_t)mg->mg_obj;
+ /* @{^CAPTURE} does not contain $&, so we need to increment by 1 */
+ const I32 paren = mg->mg_len
+ + (n == '\003' ? 1 : 0);
+ SSize_t s;
+ SSize_t t;
if (paren < 0)
return 0;
if (paren <= (I32)RX_NPARENS(rx) &&
(s = RX_OFFS(rx)[paren].start) != -1 &&
(t = RX_OFFS(rx)[paren].end) != -1)
{
- I32 i;
- if (mg->mg_obj) /* @+ */
+ SSize_t i;
+
+ if (n == '+') /* @+ */
i = t;
- else /* @- */
+ else if (n == '-') /* @- */
i = s;
+ else { /* @^CAPTURE @{^CAPTURE} */
+ CALLREG_NUMBUF_FETCH(rx,paren,sv);
+ return 0;
+ }
- if (i > 0 && RX_MATCH_UTF8(rx)) {
+ if (RX_MATCH_UTF8(rx)) {
const char * const b = RX_SUBBEG(rx);
if (b)
i = RX_SUBCOFFSET(rx) +
(U8*)(b-RX_SUBOFFSET(rx)+i));
}
- sv_setiv(sv, i);
+ sv_setuv(sv, i);
+ return 0;
}
}
}
+ sv_set_undef(sv);
return 0;
}
Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
{
PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET;
+ PERL_UNUSED_CONTEXT;
PERL_UNUSED_ARG(sv);
PERL_UNUSED_ARG(mg);
Perl_croak_no_modify();
PERL_ARGS_ASSERT_EMULATE_COP_IO;
if (!(CopHINTS_get(c) & (HINT_LEXICAL_IO_IN|HINT_LEXICAL_IO_OUT)))
- sv_setsv(sv, &PL_sv_undef);
+ sv_set_undef(sv);
else {
- sv_setpvs(sv, "");
+ SvPVCLEAR(sv);
SvUTF8_off(sv);
if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) {
SV *const value = cop_hints_fetch_pvs(c, "open<", 0);
}
}
+STATIC void
+S_fixup_errno_string(pTHX_ SV* sv)
+{
+ /* Do what is necessary to fixup the non-empty string in 'sv' for return to
+ * Perl space. */
+
+ PERL_ARGS_ASSERT_FIXUP_ERRNO_STRING;
+
+ assert(SvOK(sv));
+
+ if(strEQ(SvPVX(sv), "")) {
+ sv_catpv(sv, UNKNOWN_ERRNO_MSG);
+ }
+ else {
+
+ /* In some locales the error string may come back as UTF-8, in which
+ * case we should turn on that flag. This didn't use to happen, and to
+ * avoid as many possible backward compatibility issues as possible, we
+ * don't turn on the flag unless we have to. So the flag stays off for
+ * an entirely invariant string. We assume that if the string looks
+ * like UTF-8 in a single script, it really is UTF-8: "text in any
+ * other encoding that uses bytes with the high bit set is extremely
+ * unlikely to pass a UTF-8 validity test"
+ * (http://en.wikipedia.org/wiki/Charset_detection). There is a
+ * potential that we will get it wrong however, especially on short
+ * error message text, so do an additional check. */
+ if ( ! IN_BYTES /* respect 'use bytes' */
+ && is_utf8_non_invariant_string((U8*) SvPVX_const(sv), SvCUR(sv))
+
+#ifdef USE_LOCALE_MESSAGES
+
+ && _is_cur_LC_category_utf8(LC_MESSAGES)
+
+#else /* If can't check directly, at least can see if script is consistent,
+ under UTF-8, which gives us an extra measure of confidence. */
+
+ && isSCRIPT_RUN((const U8 *) SvPVX_const(sv), (U8 *) SvEND(sv),
+ TRUE) /* Means assume UTF-8 */
+#endif
+
+ ) {
+ SvUTF8_on(sv);
+ }
+ }
+}
+
+/*
+=for apidoc sv_string_from_errnum
+
+Generates the message string describing an OS error and returns it as
+an SV. C<errnum> must be a value that C<errno> could take, identifying
+the type of error.
+
+If C<tgtsv> is non-null then the string will be written into that SV
+(overwriting existing content) and it will be returned. If C<tgtsv>
+is a null pointer then the string will be written into a new mortal SV
+which will be returned.
+
+The message will be taken from whatever locale would be used by C<$!>,
+and will be encoded in the SV in whatever manner would be used by C<$!>.
+The details of this process are subject to future change. Currently,
+the message is taken from the C locale by default (usually producing an
+English message), and from the currently selected locale when in the scope
+of the C<use locale> pragma. A heuristic attempt is made to decode the
+message from the locale's character encoding, but it will only be decoded
+as either UTF-8 or ISO-8859-1. It is always correctly decoded in a UTF-8
+locale, usually in an ISO-8859-1 locale, and never in any other locale.
+
+The SV is always returned containing an actual string, and with no other
+OK bits set. Unlike C<$!>, a message is even yielded for C<errnum> zero
+(meaning success), and if no useful message is available then a useless
+string (currently empty) is returned.
+
+=cut
+*/
+
+SV *
+Perl_sv_string_from_errnum(pTHX_ int errnum, SV *tgtsv)
+{
+ char const *errstr;
+ if(!tgtsv)
+ tgtsv = sv_newmortal();
+ errstr = my_strerror(errnum);
+ if(errstr) {
+ sv_setpv(tgtsv, errstr);
+ fixup_errno_string(tgtsv);
+ } else {
+ SvPVCLEAR(tgtsv);
+ }
+ return tgtsv;
+}
+
#ifdef VMS
#include <descrip.h>
#include <starlet.h>
int
Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
I32 paren;
const char *s = NULL;
REGEXP *rx;
const char * const remaining = mg->mg_ptr + 1;
- const char nextchar = *remaining;
+ char nextchar;
PERL_ARGS_ASSERT_MAGIC_GET;
+ if (!mg->mg_ptr) {
+ paren = mg->mg_len;
+ if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
+ do_numbuf_fetch:
+ CALLREG_NUMBUF_FETCH(rx,paren,sv);
+ }
+ else
+ goto set_undef;
+ return 0;
+ }
+
+ nextchar = *remaining;
switch (*mg->mg_ptr) {
case '\001': /* ^A */
if (SvOK(PL_bodytarget)) sv_copypv(sv, PL_bodytarget);
- else sv_setsv(sv, &PL_sv_undef);
+ else
+ sv_set_undef(sv);
if (SvTAINTED(PL_bodytarget))
SvTAINTED_on(sv);
break;
sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK));
break;
case '\005': /* ^E */
- if (nextchar == '\0') {
-#if defined(VMS)
- {
- char msg[255];
- $DESCRIPTOR(msgdsc,msg);
- sv_setnv(sv,(NV) vaxc$errno);
- if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
- sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
- else
- sv_setpvs(sv,"");
- }
+ if (nextchar != '\0') {
+ if (strEQ(remaining, "NCODING"))
+ sv_set_undef(sv);
+ break;
+ }
+
+#if defined(VMS) || defined(OS2) || defined(WIN32)
+# if defined(VMS)
+ {
+ char msg[255];
+ $DESCRIPTOR(msgdsc,msg);
+ sv_setnv(sv,(NV) vaxc$errno);
+ if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
+ sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
+ else
+ SvPVCLEAR(sv);
+ }
#elif defined(OS2)
- if (!(_emx_env & 0x200)) { /* Under DOS */
- sv_setnv(sv, (NV)errno);
- sv_setpv(sv, errno ? Strerror(errno) : "");
- } else {
- if (errno != errno_isOS2) {
- const int tmp = _syserrno();
- if (tmp) /* 2nd call to _syserrno() makes it 0 */
- Perl_rc = tmp;
- }
- sv_setnv(sv, (NV)Perl_rc);
- sv_setpv(sv, os2error(Perl_rc));
- }
-#elif defined(WIN32)
- {
- const DWORD dwErr = GetLastError();
- sv_setnv(sv, (NV)dwErr);
- if (dwErr) {
- PerlProc_GetOSError(sv, dwErr);
- }
- else
- sv_setpvs(sv, "");
- SetLastError(dwErr);
- }
+ if (!(_emx_env & 0x200)) { /* Under DOS */
+ sv_setnv(sv, (NV)errno);
+ sv_setpv(sv, errno ? my_strerror(errno) : "");
+ } else {
+ if (errno != errno_isOS2) {
+ const int tmp = _syserrno();
+ if (tmp) /* 2nd call to _syserrno() makes it 0 */
+ Perl_rc = tmp;
+ }
+ sv_setnv(sv, (NV)Perl_rc);
+ sv_setpv(sv, os2error(Perl_rc));
+ }
+ if (SvOK(sv) && strNE(SvPVX(sv), "")) {
+ fixup_errno_string(sv);
+ }
+# elif defined(WIN32)
+ {
+ const DWORD dwErr = GetLastError();
+ sv_setnv(sv, (NV)dwErr);
+ if (dwErr) {
+ PerlProc_GetOSError(sv, dwErr);
+ fixup_errno_string(sv);
+ }
+ else
+ SvPVCLEAR(sv);
+ SetLastError(dwErr);
+ }
+# else
+# error Missing code for platform
+# endif
+ SvRTRIM(sv);
+ SvNOK_on(sv); /* what a wonderful hack! */
+ break;
+#endif /* End of platforms with special handling for $^E; others just fall
+ through to $! */
+ /* FALLTHROUGH */
+
+ case '!':
+ {
+ dSAVE_ERRNO;
+#ifdef VMS
+ sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
#else
- {
- dSAVE_ERRNO;
- sv_setnv(sv, (NV)errno);
- sv_setpv(sv, errno ? Strerror(errno) : "");
- RESTORE_ERRNO;
- }
-#endif
- SvRTRIM(sv);
- SvNOK_on(sv); /* what a wonderful hack! */
- }
- else if (strEQ(remaining, "NCODING"))
- sv_setsv(sv, PL_encoding);
- break;
+ sv_setnv(sv, (NV)errno);
+#endif
+#ifdef OS2
+ if (errno == errno_isOS2 || errno == errno_isOS2_set)
+ sv_setpv(sv, os2error(Perl_rc));
+ else
+#endif
+ if (! errno) {
+ SvPVCLEAR(sv);
+ }
+ else {
+ sv_string_from_errnum(errno, sv);
+ /* If no useful string is available, don't
+ * claim to have a string part. The SvNOK_on()
+ * below will cause just the number part to be valid */
+ if (!SvCUR(sv))
+ SvPOK_off(sv);
+ }
+ RESTORE_ERRNO;
+ }
+
+ SvRTRIM(sv);
+ SvNOK_on(sv); /* what a wonderful hack! */
+ break;
+
case '\006': /* ^F */
- sv_setiv(sv, (IV)PL_maxsysfd);
+ if (nextchar == '\0') {
+ sv_setiv(sv, (IV)PL_maxsysfd);
+ }
+ else if (strEQ(remaining, "EATURE_BITS")) {
+ sv_setuv(sv, PL_compiling.cop_features);
+ }
break;
case '\007': /* ^GLOBAL_PHASE */
if (strEQ(remaining, "LOBAL_PHASE")) {
}
break;
case '\010': /* ^H */
- sv_setiv(sv, (IV)PL_hints);
+ sv_setuv(sv, PL_hints);
break;
case '\011': /* ^I */ /* NOT \t in EBCDIC */
sv_setpv(sv, PL_inplace); /* Will undefine sv if PL_inplace is NULL */
break;
case '\014': /* ^LAST_FH */
if (strEQ(remaining, "AST_FH")) {
- if (PL_last_in_gv) {
+ if (PL_last_in_gv && (SV*)PL_last_in_gv != &PL_sv_undef) {
assert(isGV_with_GP(PL_last_in_gv));
SV_CHECK_THINKFIRST_COW_DROP(sv);
prepare_SV_for_RV(sv);
SvROK_on(sv);
sv_rvweaken(sv);
}
- else sv_setsv_nomg(sv, NULL);
+ else
+ sv_set_undef(sv);
}
break;
case '\017': /* ^O & ^OPEN */
}
break;
case '\020':
- if (nextchar == '\0') { /* ^P */
- sv_setiv(sv, (IV)PL_perldb);
- } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
-
- paren = RX_BUFF_IDX_CARET_PREMATCH;
- goto do_numbuf_fetch;
- } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
- paren = RX_BUFF_IDX_CARET_POSTMATCH;
- goto do_numbuf_fetch;
- }
+ sv_setiv(sv, (IV)PL_perldb);
break;
case '\023': /* ^S */
if (nextchar == '\0') {
else
sv_setiv(sv, 0);
}
+ else if (strEQ(remaining, "AFE_LOCALES")) {
+
+#if ! defined(USE_ITHREADS) || defined(USE_THREAD_SAFE_LOCALE)
+
+ sv_setuv(sv, (UV) 1);
+
+#else
+ sv_setuv(sv, (UV) 0);
+
+#endif
+
+ }
break;
case '\024': /* ^T */
if (nextchar == '\0') {
break;
case '\027': /* ^W & $^WARNING_BITS */
if (nextchar == '\0')
- sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
+ sv_setiv(sv, (IV)cBOOL(PL_dowarn & G_WARN_ON));
else if (strEQ(remaining, "ARNING_BITS")) {
if (PL_compiling.cop_warnings == pWARN_NONE) {
sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
}
else if (PL_compiling.cop_warnings == pWARN_STD) {
- sv_setsv(sv, &PL_sv_undef);
- break;
+ goto set_undef;
}
else if (PL_compiling.cop_warnings == pWARN_ALL) {
- /* Get the bit mask for $warnings::Bits{all}, because
- * it could have been extended by warnings::register */
- HV * const bits = get_hv("warnings::Bits", 0);
- SV ** const bits_all = bits ? hv_fetchs(bits, "all", FALSE) : NULL;
- if (bits_all)
- sv_copypv(sv, *bits_all);
- else
- sv_setpvn(sv, WARN_ALLstring, WARNsize);
+ sv_setpvn(sv, WARN_ALLstring, WARNsize);
}
else {
sv_setpvn(sv, (char *) (PL_compiling.cop_warnings + 1),
*PL_compiling.cop_warnings);
}
}
- break;
- case '\015': /* $^MATCH */
- if (strEQ(remaining, "ATCH")) {
- paren = RX_BUFF_IDX_CARET_FULLMATCH;
- goto do_numbuf_fetch;
- }
-
- case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9': case '&':
- /*
- * Pre-threads, this was paren = atoi(GvENAME((const GV *)mg->mg_obj));
- * XXX Does the new way break anything?
- */
- paren = atoi(mg->mg_ptr); /* $& is in [0] */
- do_numbuf_fetch:
- if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
- CALLREG_NUMBUF_FETCH(rx,paren,sv);
- break;
- }
- sv_setsv(sv,&PL_sv_undef);
+#ifdef WIN32
+ else if (strEQ(remaining, "IN32_SLOPPY_STAT")) {
+ sv_setiv(sv, w32_sloppystat);
+ }
+#endif
break;
case '+':
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
if (paren)
goto do_numbuf_fetch;
}
- sv_setsv(sv,&PL_sv_undef);
- break;
+ goto set_undef;
case '\016': /* ^N */
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
paren = RX_LASTCLOSEPAREN(rx);
if (paren)
goto do_numbuf_fetch;
}
- sv_setsv(sv,&PL_sv_undef);
- break;
- case '`':
- paren = RX_BUFF_IDX_PREMATCH;
- goto do_numbuf_fetch;
- case '\'':
- paren = RX_BUFF_IDX_POSTMATCH;
- goto do_numbuf_fetch;
+ goto set_undef;
case '.':
if (GvIO(PL_last_in_gv)) {
sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv)));
sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
break;
case ':':
- break;
case '/':
break;
case '[':
if (PL_ors_sv)
sv_copypv(sv, PL_ors_sv);
else
- sv_setsv(sv, &PL_sv_undef);
+ goto set_undef;
break;
case '$': /* $$ */
{
/* else a value has been assigned manually, so do nothing */
}
break;
-
- case '!':
- {
- dSAVE_ERRNO;
-#ifdef VMS
- sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
-#else
- sv_setnv(sv, (NV)errno);
-#endif
-#ifdef OS2
- if (errno == errno_isOS2 || errno == errno_isOS2_set)
- sv_setpv(sv, os2error(Perl_rc));
- else
-#endif
- if (! errno) {
- sv_setpvs(sv, "");
- }
- else {
-
- /* Strerror can return NULL on some platforms, which will result in
- * 'sv' not being considered SvOK. The SvNOK_on() below will cause
- * just the number part to be valid */
- sv_setpv(sv, Strerror(errno));
-
- /* In some locales the error string may come back as UTF-8, in
- * which case we should turn on that flag. This didn't use to
- * happen, and to avoid any possible backward compatibility issues,
- * we don't turn on the flag unless we have to. So the flag stays
- * off for an entirely ASCII string. We assume that if the string
- * looks like UTF-8, it really is UTF-8: "text in any other
- * encoding that uses bytes with the high bit set is extremely
- * unlikely to pass a UTF-8 validity test"
- * (http://en.wikipedia.org/wiki/Charset_detection). There is a
- * potential that we will get it wrong however, especially on short
- * error message text. (If it turns out to be necessary, we could
- * also keep track if the current LC_MESSAGES locale is UTF-8) */
- if (SvOK(sv) /* It could be that Strerror returned invalid */
- && ! is_ascii_string((U8*) SvPVX_const(sv), SvCUR(sv))
- && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv)))
- {
- SvUTF8_on(sv);
- }
- }
- RESTORE_ERRNO;
- }
-
- SvRTRIM(sv);
- SvNOK_on(sv); /* what a wonderful hack! */
- break;
case '<':
sv_setuid(sv, PerlProc_getuid());
break;
#ifdef HAS_GETGROUPS
{
Groups_t *gary = NULL;
- I32 i, num_groups = getgroups(0, gary);
- Newx(gary, num_groups, Groups_t);
- num_groups = getgroups(num_groups, gary);
- for (i = 0; i < num_groups; i++)
- Perl_sv_catpvf(aTHX_ sv, " %"IVdf, (IV)gary[i]);
- Safefree(gary);
+ I32 num_groups = getgroups(0, gary);
+ if (num_groups > 0) {
+ I32 i;
+ Newx(gary, num_groups, Groups_t);
+ num_groups = getgroups(num_groups, gary);
+ for (i = 0; i < num_groups; i++)
+ Perl_sv_catpvf(aTHX_ sv, " %" IVdf, (IV)gary[i]);
+ Safefree(gary);
+ }
}
(void)SvIOK_on(sv); /* what a wonderful hack! */
#endif
break;
}
return 0;
+
+ set_undef:
+ sv_set_undef(sv);
+ return 0;
}
int
int
Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
STRLEN len = 0, klen;
const char * const key = MgPV_const(mg,klen);
const char *s = "";
}
#endif
-#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
+#if !defined(OS2) && !defined(WIN32) && !defined(MSDOS)
/* And you'll never guess what the dog had */
/* in its mouth... */
if (TAINTING_get) {
MgTAINTEDDIR_off(mg);
#ifdef VMS
- if (s && klen == 8 && strEQ(key, "DCL$PATH")) {
+ if (s && memEQs(key, klen, "DCL$PATH")) {
char pathbuf[256], eltbuf[256], *cp, *elt;
int i = 0, j = 0;
} while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
}
#endif /* VMS */
- if (s && klen == 4 && strEQ(key,"PATH")) {
+ if (s && memEQs(key, klen, "PATH")) {
const char * const strend = s + len;
+ /* set MGf_TAINTEDDIR if any component of the new path is
+ * relative or world-writeable */
while (s < strend) {
char tmpbuf[256];
Stat_t st;
I32 i;
-#ifdef VMS /* Hmm. How do we get $Config{path_sep} from C? */
- const char path_sep = '|';
+#ifdef __VMS /* Hmm. How do we get $Config{path_sep} from C? */
+ const char path_sep = PL_perllib_sep;
#else
const char path_sep = ':';
#endif
- s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
+ s = delimcpy_no_escape(tmpbuf, tmpbuf + sizeof tmpbuf,
s, strend, path_sep, &i);
s++;
if (i >= (I32)sizeof tmpbuf /* too long -- assume the worst */
-#ifdef VMS
- || !strchr(tmpbuf, ':') /* no colon thus no device name -- assume relative path */
+#ifdef __VMS
+ /* no colon thus no device name -- assume relative path */
+ || (PL_perllib_sep != ':' && !strchr(tmpbuf, ':'))
+ /* Using Unix separator, e.g. under bash, so act line Unix */
+ || (PL_perllib_sep == ':' && *tmpbuf != '/')
#else
|| *tmpbuf != '/' /* no starting slash -- assume relative path */
#endif
}
}
}
-#endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
+#endif /* neither OS2 nor WIN32 nor MSDOS */
return 0;
}
int
Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
PERL_ARGS_ASSERT_MAGIC_SET_ALL_ENV;
PERL_UNUSED_ARG(mg);
#if defined(VMS)
int
Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
PERL_ARGS_ASSERT_MAGIC_CLEAR_ALL_ENV;
PERL_UNUSED_ARG(sv);
PERL_UNUSED_ARG(mg);
int
Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
/* Are we fetching a signal entry? */
int i = (I16)mg->mg_private;
if(sigstate == (Sighandler_t) SIG_IGN)
sv_setpvs(sv,"IGNORE");
else
- sv_setsv(sv,&PL_sv_undef);
+ sv_set_undef(sv);
PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv);
SvTEMP_off(sv);
}
#else
dTHX;
#endif
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+#if defined(__cplusplus) && defined(__GNUC__)
+ /* g++ doesn't support PERL_UNUSED_DECL, so the sip and uap
+ * parameters would be warned about. */
+ PERL_UNUSED_ARG(sip);
+ PERL_UNUSED_ARG(uap);
+#endif
+#endif
#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
(void) rsignal(sig, PL_csighandlerp);
if (PL_sig_ignoring[sig]) return;
static void
unblock_sigmask(pTHX_ void* newset)
{
+ PERL_UNUSED_CONTEXT;
sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL);
}
#endif
void
Perl_despatch_signals(pTHX)
{
- dVAR;
int sig;
PL_sig_pending = 0;
for (sig = 1; sig < SIG_SIZE; sig++) {
* access to a known hint bit in a known OP, we can't
* tell whether HINT_STRICT_REFS is in force or not.
*/
- if (!strchr(s,':') && !strchr(s,'\''))
+ if (!memchr(s, ':', len) && !memchr(s, '\'', len))
Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"),
SV_GMAGIC);
if (i)
int
Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
PERL_ARGS_ASSERT_MAGIC_SETISA;
PERL_UNUSED_ARG(sv);
int
Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
HV* stash;
-
PERL_ARGS_ASSERT_MAGIC_CLEARISA;
/* Bail out if destruction is going on */
same function. */
mg = mg_find(mg->mg_obj, PERL_MAGIC_isa);
+ assert(mg);
if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */
SV **svp = AvARRAY((AV *)mg->mg_obj);
I32 items = AvFILLp((AV *)mg->mg_obj) + 1;
The arguments themselves are any values following the C<flags> argument.
-Returns the SV (if any) returned by the method, or NULL on failure.
+Returns the SV (if any) returned by the method, or C<NULL> on failure.
=cut
Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags,
U32 argc, ...)
{
- dVAR;
dSP;
SV* ret = NULL;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
- EXTEND(SP, argc+1);
+ /* EXTEND() expects a signed argc; don't wrap when casting */
+ assert(argc <= I32_MAX);
+ EXTEND(SP, (I32)argc+1);
PUSHs(SvTIED_obj(sv, mg));
if (flags & G_UNDEF_FILL) {
while (argc--) {
S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, SV *meth, U32 flags,
int n, SV *val)
{
- dVAR;
SV* arg1 = NULL;
PERL_ARGS_ASSERT_MAGIC_METHCALL1;
STATIC int
S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, SV *meth)
{
- dVAR;
SV* ret;
PERL_ARGS_ASSERT_MAGIC_METHPACK;
int
Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
MAGIC *tmg;
SV *val;
U32
Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
I32 retval = 0;
SV* retsv;
int
Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_WIPEPACK;
Perl_magic_methcall(aTHX_ sv, mg, SV_CONST(CLEAR), G_DISCARD, 0);
int
Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
{
- dVAR;
SV* ret;
PERL_ARGS_ASSERT_MAGIC_NEXTPACK;
SV *
Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg)
{
- dVAR;
SV *retval;
SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg);
HV * const pkg = SvSTASH((const SV *)SvRV(tied));
int
Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
- GV * const gv = PL_DBline;
- const I32 i = SvTRUE(sv);
- SV ** const svp = av_fetch(GvAV(gv),
- atoi(MgPV_nolen_const(mg)), FALSE);
+ SV **svp;
PERL_ARGS_ASSERT_MAGIC_SETDBLINE;
+ /* The magic ptr/len for the debugger's hash should always be an SV. */
+ if (UNLIKELY(mg->mg_len != HEf_SVKEY)) {
+ Perl_croak(aTHX_ "panic: magic_setdbline len=%" IVdf ", ptr='%s'",
+ (IV)mg->mg_len, mg->mg_ptr);
+ }
+
+ /* Use sv_2iv instead of SvIV() as the former generates smaller code, and
+ setting/clearing debugger breakpoints is not a hot path. */
+ svp = av_fetch(MUTABLE_AV(mg->mg_obj),
+ sv_2iv(MUTABLE_SV((mg)->mg_ptr)), FALSE);
+
if (svp && SvIOKp(*svp)) {
OP * const o = INT2PTR(OP*,SvIVX(*svp));
if (o) {
Slab_to_rw(OpSLAB(o));
#endif
/* set or clear breakpoint in the relevant control op */
- if (i)
+ if (SvTRUE(sv))
o->op_flags |= OPf_SPECIAL;
else
o->op_flags &= ~OPf_SPECIAL;
int
Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg)
{
- dVAR;
AV * const obj = MUTABLE_AV(mg->mg_obj);
PERL_ARGS_ASSERT_MAGIC_GETARYLEN;
if (obj) {
sv_setiv(sv, AvFILL(obj));
} else {
- SvOK_off(sv);
+ sv_set_undef(sv);
}
return 0;
}
int
Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
AV * const obj = MUTABLE_AV(mg->mg_obj);
PERL_ARGS_ASSERT_MAGIC_SETARYLEN;
int
Perl_magic_cleararylen_p(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_CLEARARYLEN_P;
PERL_UNUSED_ARG(sv);
+ PERL_UNUSED_CONTEXT;
/* Reset the iterator when the array is cleared */
-#if IVSIZE == I32SIZE
- *((IV *) &(mg->mg_len)) = 0;
-#else
- if (mg->mg_ptr)
- *((IV *) mg->mg_ptr) = 0;
-#endif
+ if (sizeof(IV) == sizeof(SSize_t)) {
+ *((IV *) &(mg->mg_len)) = 0;
+ } else {
+ if (mg->mg_ptr)
+ *((IV *) mg->mg_ptr) = 0;
+ }
return 0;
}
int
Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_FREEARYLEN_P;
PERL_UNUSED_ARG(sv);
int
Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
SV* const lsv = LvTARG(sv);
MAGIC * const found = mg_find_mglob(lsv);
if (found && found->mg_len != -1) {
STRLEN i = found->mg_len;
- if (DO_UTF8(lsv))
+ if (found->mg_flags & MGf_BYTES && DO_UTF8(lsv))
i = sv_pos_b2u_flags(lsv, i, SV_GMAGIC|SV_CONST_RETURN);
sv_setuv(sv, i);
return 0;
}
- SvOK_off(sv);
+ sv_set_undef(sv);
return 0;
}
int
Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
SV* const lsv = LvTARG(sv);
SSize_t pos;
STRLEN len;
- STRLEN ulen = 0;
MAGIC* found;
const char *s;
pos = SvIV(sv);
if (DO_UTF8(lsv)) {
- ulen = sv_or_pv_len_utf8(lsv, s, len);
+ const STRLEN ulen = sv_or_pv_len_utf8(lsv, s, len);
if (ulen)
len = ulen;
}
else if (pos > (SSize_t)len)
pos = len;
- if (ulen) {
- pos = sv_or_pv_pos_u2b(lsv, s, pos, 0);
- }
-
found->mg_len = pos;
- found->mg_flags &= ~MGf_MINMATCH;
+ found->mg_flags &= ~(MGf_MINMATCH|MGf_BYTES);
return 0;
}
const char * const tmps = SvPV_const(lsv,len);
STRLEN offs = LvTARGOFF(sv);
STRLEN rem = LvTARGLEN(sv);
- const bool negoff = LvFLAGS(sv) & 1;
- const bool negrem = LvFLAGS(sv) & 2;
+ const bool negoff = LvFLAGS(sv) & LVf_NEG_OFF;
+ const bool negrem = LvFLAGS(sv) & LVf_NEG_LEN;
PERL_ARGS_ASSERT_MAGIC_GETSUBSTR;
PERL_UNUSED_ARG(mg);
negrem ? -(IV)rem : (IV)rem, !negrem, &offs, &rem
)) {
Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string");
- sv_setsv_nomg(sv, &PL_sv_undef);
+ sv_set_undef(sv);
return 0;
}
int
Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
STRLEN len, lsv_len, oldtarglen, newtarglen;
const char * const tmps = SvPV_const(sv, len);
SV * const lsv = LvTARG(sv);
STRLEN lvoff = LvTARGOFF(sv);
STRLEN lvlen = LvTARGLEN(sv);
- const bool negoff = LvFLAGS(sv) & 1;
- const bool neglen = LvFLAGS(sv) & 2;
+ const bool negoff = LvFLAGS(sv) & LVf_NEG_OFF;
+ const bool neglen = LvFLAGS(sv) & LVf_NEG_LEN;
PERL_ARGS_ASSERT_MAGIC_SETSUBSTR;
PERL_UNUSED_ARG(mg);
int
Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_GETTAINT;
PERL_UNUSED_ARG(sv);
#ifdef NO_TAINT_SUPPORT
PERL_UNUSED_ARG(mg);
#endif
- TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1));
+ TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1) && IN_PERL_RUNTIME);
return 0;
}
int
Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_SETTAINT;
PERL_UNUSED_ARG(sv);
Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
{
SV * const lsv = LvTARG(sv);
+ char errflags = LvFLAGS(sv);
PERL_ARGS_ASSERT_MAGIC_GETVEC;
PERL_UNUSED_ARG(mg);
- if (lsv)
- sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
- else
- SvOK_off(sv);
+ /* non-zero errflags implies deferred out-of-range condition */
+ assert(!(errflags & ~(LVf_NEG_OFF|LVf_OUT_OF_RANGE)));
+ sv_setuv(sv, errflags ? 0 : do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(sv)));
return 0;
}
SV *
Perl_defelem_target(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
SV *targ = NULL;
PERL_ARGS_ASSERT_DEFELEM_TARGET;
if (!mg) mg = mg_find(sv, PERL_MAGIC_defelem);
else if (LvSTARGOFF(sv) >= 0) {
AV *const av = MUTABLE_AV(LvTARG(sv));
if (LvSTARGOFF(sv) <= AvFILL(av))
+ {
+ if (SvRMAGICAL(av)) {
+ SV * const * const svp = av_fetch(av, LvSTARGOFF(sv), 0);
+ targ = svp ? *svp : NULL;
+ }
+ else
targ = AvARRAY(av)[LvSTARGOFF(sv)];
+ }
}
if (targ && (targ != &PL_sv_undef)) {
/* somebody else defined it for us */
void
Perl_vivify_defelem(pTHX_ SV *sv)
{
- dVAR;
MAGIC *mg;
SV *value = NULL;
LvTARG(sv) = NULL; /* array can't be extended */
else {
SV* const * const svp = av_fetch(av, LvSTARGOFF(sv), TRUE);
- if (!svp || (value = *svp) == &PL_sv_undef)
+ if (!svp || !(value = *svp))
Perl_croak(aTHX_ PL_no_aelem, LvSTARGOFF(sv));
}
}
}
int
+Perl_magic_setnonelem(pTHX_ SV *sv, MAGIC *mg)
+{
+ PERL_ARGS_ASSERT_MAGIC_SETNONELEM;
+ PERL_UNUSED_ARG(mg);
+ sv_unmagic(sv, PERL_MAGIC_nonelem);
+ return 0;
+}
+
+int
Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
{
PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS;
PERL_ARGS_ASSERT_MAGIC_SETREGEXP;
- if (type == PERL_MAGIC_qr) {
- } else if (type == PERL_MAGIC_bm) {
- SvTAIL_off(sv);
- SvVALID_off(sv);
- } else {
- assert(type == PERL_MAGIC_fm);
- }
+ assert( type == PERL_MAGIC_fm
+ || type == PERL_MAGIC_qr
+ || type == PERL_MAGIC_bm);
return sv_unmagic(sv, type);
}
}
int
-Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
+Perl_magic_setlvref(pTHX_ SV *sv, MAGIC *mg)
+{
+ const char *bad = NULL;
+ PERL_ARGS_ASSERT_MAGIC_SETLVREF;
+ if (!SvROK(sv)) Perl_croak(aTHX_ "Assigned value is not a reference");
+ switch (mg->mg_private & OPpLVREF_TYPE) {
+ case OPpLVREF_SV:
+ if (SvTYPE(SvRV(sv)) > SVt_PVLV)
+ bad = " SCALAR";
+ break;
+ case OPpLVREF_AV:
+ if (SvTYPE(SvRV(sv)) != SVt_PVAV)
+ bad = "n ARRAY";
+ break;
+ case OPpLVREF_HV:
+ if (SvTYPE(SvRV(sv)) != SVt_PVHV)
+ bad = " HASH";
+ break;
+ case OPpLVREF_CV:
+ if (SvTYPE(SvRV(sv)) != SVt_PVCV)
+ bad = " CODE";
+ }
+ if (bad)
+ /* diag_listed_as: Assigned value is not %s reference */
+ Perl_croak(aTHX_ "Assigned value is not a%s reference", bad);
+ switch (mg->mg_obj ? SvTYPE(mg->mg_obj) : 0) {
+ case 0:
+ {
+ SV * const old = PAD_SV(mg->mg_len);
+ PAD_SETSV(mg->mg_len, SvREFCNT_inc_NN(SvRV(sv)));
+ SvREFCNT_dec(old);
+ break;
+ }
+ case SVt_PVGV:
+ gv_setref(mg->mg_obj, sv);
+ SvSETMAGIC(mg->mg_obj);
+ break;
+ case SVt_PVAV:
+ av_store((AV *)mg->mg_obj, SvIV((SV *)mg->mg_ptr),
+ SvREFCNT_inc_simple_NN(SvRV(sv)));
+ break;
+ case SVt_PVHV:
+ (void)hv_store_ent((HV *)mg->mg_obj, (SV *)mg->mg_ptr,
+ SvREFCNT_inc_simple_NN(SvRV(sv)), 0);
+ }
+ if (mg->mg_flags & MGf_PERSIST)
+ NOOP; /* This sv is in use as an iterator var and will be reused,
+ so we must leave the magic. */
+ else
+ /* This sv could be returned by the assignment op, so clear the
+ magic, as lvrefs are an implementation detail that must not be
+ leaked to the user. */
+ sv_unmagic(sv, PERL_MAGIC_lvref);
+ return 0;
+}
+
+static void
+S_set_dollarzero(pTHX_ SV *sv)
+ PERL_TSA_REQUIRES(PL_dollarzero_mutex)
{
+#ifdef USE_ITHREADS
dVAR;
+#endif
const char *s;
+ STRLEN len;
+#ifdef HAS_SETPROCTITLE
+ /* The BSDs don't show the argv[] in ps(1) output, they
+ * show a string from the process struct and provide
+ * the setproctitle() routine to manipulate that. */
+ if (PL_origalen != 1) {
+ s = SvPV_const(sv, len);
+# if __FreeBSD_version > 410001 || defined(__DragonFly__)
+ /* The leading "-" removes the "perl: " prefix,
+ * but not the "(perl) suffix from the ps(1)
+ * output, because that's what ps(1) shows if the
+ * argv[] is modified. */
+ setproctitle("-%s", s);
+# else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
+ /* This doesn't really work if you assume that
+ * $0 = 'foobar'; will wipe out 'perl' from the $0
+ * because in ps(1) output the result will be like
+ * sprintf("perl: %s (perl)", s)
+ * I guess this is a security feature:
+ * one (a user process) cannot get rid of the original name.
+ * --jhi */
+ setproctitle("%s", s);
+# endif
+ }
+#elif defined(__hpux) && defined(PSTAT_SETCMD)
+ if (PL_origalen != 1) {
+ union pstun un;
+ s = SvPV_const(sv, len);
+ un.pst_command = (char *)s;
+ pstat(PSTAT_SETCMD, un, len, 0, 0);
+ }
+#else
+ if (PL_origalen > 1) {
+ I32 i;
+ /* PL_origalen is set in perl_parse(). */
+ s = SvPV_force(sv,len);
+ if (len >= (STRLEN)PL_origalen-1) {
+ /* Longer than original, will be truncated. We assume that
+ * PL_origalen bytes are available. */
+ Copy(s, PL_origargv[0], PL_origalen-1, char);
+ }
+ else {
+ /* Shorter than original, will be padded. */
+#ifdef PERL_DARWIN
+ /* Special case for Mac OS X: see [perl #38868] */
+ const int pad = 0;
+#else
+ /* Is the space counterintuitive? Yes.
+ * (You were expecting \0?)
+ * Does it work? Seems to. (In Linux 2.4.20 at least.)
+ * --jhi */
+ const int pad = ' ';
+#endif
+ Copy(s, PL_origargv[0], len, char);
+ PL_origargv[0][len] = 0;
+ memset(PL_origargv[0] + len + 1,
+ pad, PL_origalen - len - 1);
+ }
+ PL_origargv[0][PL_origalen-1] = 0;
+ for (i = 1; i < PL_origargc; i++)
+ PL_origargv[i] = 0;
+#ifdef HAS_PRCTL_SET_NAME
+ /* Set the legacy process name in addition to the POSIX name on Linux */
+ if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) {
+ /* diag_listed_as: SKIPME */
+ Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno));
+ }
+#endif
+ }
+#endif
+}
+
+int
+Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
+{
+#ifdef USE_ITHREADS
+ dVAR;
+#endif
I32 paren;
const REGEXP * rx;
- const char * const remaining = mg->mg_ptr + 1;
I32 i;
STRLEN len;
MAGIC *tmg;
PERL_ARGS_ASSERT_MAGIC_SET;
- switch (*mg->mg_ptr) {
- case '\015': /* $^MATCH */
- if (strEQ(remaining, "ATCH"))
- goto do_match;
- case '`': /* ${^PREMATCH} caught below */
- do_prematch:
- paren = RX_BUFF_IDX_PREMATCH;
- goto setparen;
- case '\'': /* ${^POSTMATCH} caught below */
- do_postmatch:
- paren = RX_BUFF_IDX_POSTMATCH;
- goto setparen;
- case '&':
- do_match:
- paren = RX_BUFF_IDX_FULLMATCH;
- goto setparen;
- case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- paren = atoi(mg->mg_ptr);
- setparen:
+ if (!mg->mg_ptr) {
+ paren = mg->mg_len;
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
- setparen_got_rx:
+ setparen_got_rx:
CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv);
} else {
/* Croak with a READONLY error when a numbered match var is
* set without a previous pattern match. Unless it's C<local $1>
*/
- croakparen:
+ croakparen:
if (!PL_localizing) {
Perl_croak_no_modify();
}
}
- break;
+ return 0;
+ }
+
+ switch (*mg->mg_ptr) {
case '\001': /* ^A */
if (SvOK(sv)) sv_copypv(PL_bodytarget, sv);
else SvOK_off(PL_bodytarget);
FmLINES(PL_bodytarget) = 0;
if (SvPOK(PL_bodytarget)) {
char *s = SvPVX(PL_bodytarget);
- while ( ((s = strchr(s, '\n'))) ) {
+ char *e = SvEND(PL_bodytarget);
+ while ( ((s = (char *) memchr(s, '\n', e - s))) ) {
FmLINES(PL_bodytarget)++;
s++;
}
case '\004': /* ^D */
#ifdef DEBUGGING
- s = SvPV_nolen_const(sv);
- PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG;
- if (DEBUG_x_TEST || DEBUG_B_TEST)
- dump_all_perl(!DEBUG_B_TEST);
+ {
+ const char *s = SvPV_nolen_const(sv);
+ PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG;
+ if (DEBUG_x_TEST || DEBUG_B_TEST)
+ dump_all_perl(!DEBUG_B_TEST);
+ }
#else
PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG;
#endif
if (*(mg->mg_ptr+1) == '\0') {
#ifdef VMS
set_vaxc_errno(SvIV(sv));
-#else
-# ifdef WIN32
+#elif defined(WIN32)
SetLastError( SvIV(sv) );
-# else
-# ifdef OS2
+#elif defined(OS2)
os2_setsyserrno(SvIV(sv));
-# else
+#else
/* will anyone ever use this? */
SETERRNO(SvIV(sv), 4);
-# endif
-# endif
#endif
}
- else if (strEQ(mg->mg_ptr+1, "NCODING")) {
- SvREFCNT_dec(PL_encoding);
- if (SvOK(sv) || SvGMAGICAL(sv)) {
- PL_encoding = newSVsv(sv);
- }
- else {
- PL_encoding = NULL;
- }
- }
+ else if (strEQ(mg->mg_ptr + 1, "NCODING") && SvOK(sv))
+ Perl_croak(aTHX_ "${^ENCODING} is no longer supported");
break;
case '\006': /* ^F */
- PL_maxsysfd = SvIV(sv);
+ if (mg->mg_ptr[1] == '\0') {
+ PL_maxsysfd = SvIV(sv);
+ }
+ else if (strEQ(mg->mg_ptr + 1, "EATURE_BITS")) {
+ PL_compiling.cop_features = SvUV(sv);
+ }
break;
case '\010': /* ^H */
- PL_hints = SvIV(sv);
+ {
+ U32 save_hints = PL_hints;
+ PL_hints = SvUV(sv);
+
+ /* If wasn't UTF-8, and now is, notify the parser */
+ if ((PL_hints & HINT_UTF8) && ! (save_hints & HINT_UTF8)) {
+ notify_parser_that_changed_to_utf8();
+ }
+ }
break;
case '\011': /* ^I */ /* NOT \t in EBCDIC */
Safefree(PL_inplace);
}
break;
case '\020': /* ^P */
- if (*remaining == '\0') { /* ^P */
PL_perldb = SvIV(sv);
if (PL_perldb && !PL_DBsingle)
init_debugger();
- break;
- } else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
- goto do_prematch;
- } else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
- goto do_postmatch;
- }
break;
case '\024': /* ^T */
#ifdef BIG_TIME
else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
if (!SvPOK(sv)) {
+ if (!specialWARN(PL_compiling.cop_warnings))
+ PerlMemShared_free(PL_compiling.cop_warnings);
PL_compiling.cop_warnings = pWARN_STD;
break;
}
{
STRLEN len, i;
- int accumulate = 0 ;
- int any_fatals = 0 ;
- const char * const ptr = SvPV_const(sv, len) ;
+ int not_none = 0, not_all = 0;
+ const U8 * const ptr = (const U8 *)SvPV_const(sv, len) ;
for (i = 0 ; i < len ; ++i) {
- accumulate |= ptr[i] ;
- any_fatals |= (ptr[i] & 0xAA) ;
+ not_none |= ptr[i];
+ not_all |= ptr[i] ^ 0x55;
}
- if (!accumulate) {
+ if (!not_none) {
if (!specialWARN(PL_compiling.cop_warnings))
PerlMemShared_free(PL_compiling.cop_warnings);
PL_compiling.cop_warnings = pWARN_NONE;
- }
- /* Yuck. I can't see how to abstract this: */
- else if (isWARN_on(
- ((STRLEN *)SvPV_nolen_const(sv)) - 1,
- WARN_ALL)
- && !any_fatals)
- {
- if (!specialWARN(PL_compiling.cop_warnings))
+ } else if (len >= WARNsize && !not_all) {
+ if (!specialWARN(PL_compiling.cop_warnings))
PerlMemShared_free(PL_compiling.cop_warnings);
PL_compiling.cop_warnings = pWARN_ALL;
PL_dowarn |= G_WARN_ONCE ;
}
}
}
+#ifdef WIN32
+ else if (strEQ(mg->mg_ptr+1, "IN32_SLOPPY_STAT")) {
+ w32_sloppystat = (bool)sv_true(sv);
+ }
+#endif
break;
case '.':
if (PL_localizing) {
break;
case '^':
Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
- s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
+ IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
break;
case '~':
Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
- s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
+ IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
break;
case '=':
}
break;
case '/':
- SvREFCNT_dec(PL_rs);
- PL_rs = newSVsv(sv);
+ {
+ if (SvROK(sv)) {
+ SV *referent = SvRV(sv);
+ const char *reftype = sv_reftype(referent, 0);
+ /* XXX: dodgy type check: This leaves me feeling dirty, but
+ * the alternative is to copy pretty much the entire
+ * sv_reftype() into this routine, or to do a full string
+ * comparison on the return of sv_reftype() both of which
+ * make me feel worse! NOTE, do not modify this comment
+ * without reviewing the corresponding comment in
+ * sv_reftype(). - Yves */
+ if (reftype[0] == 'S' || reftype[0] == 'L') {
+ IV val = SvIV(referent);
+ if (val <= 0) {
+ sv_setsv(sv, PL_rs);
+ Perl_croak(aTHX_ "Setting $/ to a reference to %s is forbidden",
+ val < 0 ? "a negative integer" : "zero");
+ }
+ } else {
+ sv_setsv(sv, PL_rs);
+ /* diag_listed_as: Setting $/ to %s reference is forbidden */
+ Perl_croak(aTHX_ "Setting $/ to a%s %s reference is forbidden",
+ *reftype == 'A' ? "n" : "", reftype);
+ }
+ }
+ SvREFCNT_dec(PL_rs);
+ PL_rs = newSVsv(sv);
+ }
break;
case '\\':
SvREFCNT_dec(PL_ors_sv);
#else
# define PERL_VMS_BANG 0
#endif
+#if defined(WIN32)
+ SETERRNO(win32_get_errno(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0),
+ (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG);
+#else
SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
(SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG);
+#endif
}
break;
case '<':
{
+ /* XXX $< currently silently ignores failures */
const Uid_t new_uid = SvUID(sv);
PL_delaymagic_uid = new_uid;
if (PL_delaymagic) {
break; /* don't do magic till later */
}
#ifdef HAS_SETRUID
- (void)setruid(new_uid);
-#else
-#ifdef HAS_SETREUID
- (void)setreuid(new_uid, (Uid_t)-1);
-#else
-#ifdef HAS_SETRESUID
- (void)setresuid(new_uid, (Uid_t)-1, (Uid_t)-1);
+ PERL_UNUSED_RESULT(setruid(new_uid));
+#elif defined(HAS_SETREUID)
+ PERL_UNUSED_RESULT(setreuid(new_uid, (Uid_t)-1));
+#elif defined(HAS_SETRESUID)
+ PERL_UNUSED_RESULT(setresuid(new_uid, (Uid_t)-1, (Uid_t)-1));
#else
if (new_uid == PerlProc_geteuid()) { /* special case $< = $> */
-#ifdef PERL_DARWIN
+# ifdef PERL_DARWIN
/* workaround for Darwin's setuid peculiarity, cf [perl #24122] */
if (new_uid != 0 && PerlProc_getuid() == 0)
- (void)PerlProc_setuid(0);
-#endif
- (void)PerlProc_setuid(new_uid);
+ PERL_UNUSED_RESULT(PerlProc_setuid(0));
+# endif
+ PERL_UNUSED_RESULT(PerlProc_setuid(new_uid));
} else {
Perl_croak(aTHX_ "setruid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case '>':
{
+ /* XXX $> currently silently ignores failures */
const Uid_t new_euid = SvUID(sv);
PL_delaymagic_euid = new_euid;
if (PL_delaymagic) {
break; /* don't do magic till later */
}
#ifdef HAS_SETEUID
- (void)seteuid(new_euid);
-#else
-#ifdef HAS_SETREUID
- (void)setreuid((Uid_t)-1, new_euid);
-#else
-#ifdef HAS_SETRESUID
- (void)setresuid((Uid_t)-1, new_euid, (Uid_t)-1);
+ PERL_UNUSED_RESULT(seteuid(new_euid));
+#elif defined(HAS_SETREUID)
+ PERL_UNUSED_RESULT(setreuid((Uid_t)-1, new_euid));
+#elif defined(HAS_SETRESUID)
+ PERL_UNUSED_RESULT(setresuid((Uid_t)-1, new_euid, (Uid_t)-1));
#else
if (new_euid == PerlProc_getuid()) /* special case $> = $< */
- PerlProc_setuid(new_euid);
+ PERL_UNUSED_RESULT(PerlProc_setuid(new_euid));
else {
Perl_croak(aTHX_ "seteuid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case '(':
{
+ /* XXX $( currently silently ignores failures */
const Gid_t new_gid = SvGID(sv);
PL_delaymagic_gid = new_gid;
if (PL_delaymagic) {
break; /* don't do magic till later */
}
#ifdef HAS_SETRGID
- (void)setrgid(new_gid);
-#else
-#ifdef HAS_SETREGID
- (void)setregid(new_gid, (Gid_t)-1);
-#else
-#ifdef HAS_SETRESGID
- (void)setresgid(new_gid, (Gid_t)-1, (Gid_t) -1);
+ PERL_UNUSED_RESULT(setrgid(new_gid));
+#elif defined(HAS_SETREGID)
+ PERL_UNUSED_RESULT(setregid(new_gid, (Gid_t)-1));
+#elif defined(HAS_SETRESGID)
+ PERL_UNUSED_RESULT(setresgid(new_gid, (Gid_t)-1, (Gid_t) -1));
#else
if (new_gid == PerlProc_getegid()) /* special case $( = $) */
- (void)PerlProc_setgid(new_gid);
+ PERL_UNUSED_RESULT(PerlProc_setgid(new_gid));
else {
Perl_croak(aTHX_ "setrgid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case ')':
{
+/* (hv) best guess: maybe we'll need configure probes to do a better job,
+ * but you can override it if you need to.
+ */
+#ifndef INVALID_GID
+#define INVALID_GID ((Gid_t)-1)
+#endif
+ /* XXX $) currently silently ignores failures */
Gid_t new_egid;
#ifdef HAS_SETGROUPS
{
const char *p = SvPV_const(sv, len);
Groups_t *gary = NULL;
+ const char* p_end = p + len;
+ const char* endptr = p_end;
+ UV uv;
#ifdef _SC_NGROUPS_MAX
int maxgrp = sysconf(_SC_NGROUPS_MAX);
while (isSPACE(*p))
++p;
- new_egid = (Gid_t)Atol(p);
+ if (grok_atoUV(p, &uv, &endptr))
+ new_egid = (Gid_t)uv;
+ else {
+ new_egid = INVALID_GID;
+ endptr = NULL;
+ }
for (i = 0; i < maxgrp; ++i) {
- while (*p && !isSPACE(*p))
- ++p;
+ if (endptr == NULL)
+ break;
+ p = endptr;
+ endptr = p_end;
while (isSPACE(*p))
++p;
if (!*p)
break;
- if(!gary)
+ if (!gary)
Newx(gary, i + 1, Groups_t);
else
Renew(gary, i + 1, Groups_t);
- gary[i] = (Groups_t)Atol(p);
+ if (grok_atoUV(p, &uv, &endptr))
+ gary[i] = (Groups_t)uv;
+ else {
+ gary[i] = INVALID_GID;
+ endptr = NULL;
+ }
}
if (i)
- (void)setgroups(i, gary);
+ PERL_UNUSED_RESULT(setgroups(i, gary));
Safefree(gary);
}
#else /* HAS_SETGROUPS */
break; /* don't do magic till later */
}
#ifdef HAS_SETEGID
- (void)setegid(new_egid);
-#else
-#ifdef HAS_SETREGID
- (void)setregid((Gid_t)-1, new_egid);
-#else
-#ifdef HAS_SETRESGID
- (void)setresgid((Gid_t)-1, new_egid, (Gid_t)-1);
+ PERL_UNUSED_RESULT(setegid(new_egid));
+#elif defined(HAS_SETREGID)
+ PERL_UNUSED_RESULT(setregid((Gid_t)-1, new_egid));
+#elif defined(HAS_SETRESGID)
+ PERL_UNUSED_RESULT(setresgid((Gid_t)-1, new_egid, (Gid_t)-1));
#else
if (new_egid == PerlProc_getgid()) /* special case $) = $( */
- (void)PerlProc_setgid(new_egid);
+ PERL_UNUSED_RESULT(PerlProc_setgid(new_egid));
else {
Perl_croak(aTHX_ "setegid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case ':':
break;
case '0':
LOCK_DOLLARZERO_MUTEX;
-#ifdef HAS_SETPROCTITLE
- /* The BSDs don't show the argv[] in ps(1) output, they
- * show a string from the process struct and provide
- * the setproctitle() routine to manipulate that. */
- if (PL_origalen != 1) {
- s = SvPV_const(sv, len);
-# if __FreeBSD_version > 410001
- /* The leading "-" removes the "perl: " prefix,
- * but not the "(perl) suffix from the ps(1)
- * output, because that's what ps(1) shows if the
- * argv[] is modified. */
- setproctitle("-%s", s);
-# else /* old FreeBSDs, NetBSD, OpenBSD, anyBSD */
- /* This doesn't really work if you assume that
- * $0 = 'foobar'; will wipe out 'perl' from the $0
- * because in ps(1) output the result will be like
- * sprintf("perl: %s (perl)", s)
- * I guess this is a security feature:
- * one (a user process) cannot get rid of the original name.
- * --jhi */
- setproctitle("%s", s);
-# endif
- }
-#elif defined(__hpux) && defined(PSTAT_SETCMD)
- if (PL_origalen != 1) {
- union pstun un;
- s = SvPV_const(sv, len);
- un.pst_command = (char *)s;
- pstat(PSTAT_SETCMD, un, len, 0, 0);
- }
-#else
- if (PL_origalen > 1) {
- /* PL_origalen is set in perl_parse(). */
- s = SvPV_force(sv,len);
- if (len >= (STRLEN)PL_origalen-1) {
- /* Longer than original, will be truncated. We assume that
- * PL_origalen bytes are available. */
- Copy(s, PL_origargv[0], PL_origalen-1, char);
- }
- else {
- /* Shorter than original, will be padded. */
-#ifdef PERL_DARWIN
- /* Special case for Mac OS X: see [perl #38868] */
- const int pad = 0;
-#else
- /* Is the space counterintuitive? Yes.
- * (You were expecting \0?)
- * Does it work? Seems to. (In Linux 2.4.20 at least.)
- * --jhi */
- const int pad = ' ';
-#endif
- Copy(s, PL_origargv[0], len, char);
- PL_origargv[0][len] = 0;
- memset(PL_origargv[0] + len + 1,
- pad, PL_origalen - len - 1);
- }
- PL_origargv[0][PL_origalen-1] = 0;
- for (i = 1; i < PL_origargc; i++)
- PL_origargv[i] = 0;
-#ifdef HAS_PRCTL_SET_NAME
- /* Set the legacy process name in addition to the POSIX name on Linux */
- if (prctl(PR_SET_NAME, (unsigned long)s, 0, 0, 0) != 0) {
- /* diag_listed_as: SKIPME */
- Perl_croak(aTHX_ "Can't set $0 with prctl(): %s", Strerror(errno));
- }
-#endif
- }
-#endif
+ S_set_dollarzero(aTHX_ sv);
UNLOCK_DOLLARZERO_MUTEX;
break;
}
const char *sigpv;
STRLEN siglen;
PERL_ARGS_ASSERT_WHICHSIG_SV;
- PERL_UNUSED_CONTEXT;
sigpv = SvPV_const(sigsv, siglen);
return whichsig_pvn(sigpv, siglen);
}
Perl_whichsig_pv(pTHX_ const char *sig)
{
PERL_ARGS_ASSERT_WHICHSIG_PV;
- PERL_UNUSED_CONTEXT;
return whichsig_pvn(sig, strlen(sig));
}
}
if (!cv || !CvROOT(cv)) {
- Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n",
- PL_sig_name[sig], (gv ? GvENAME(gv)
- : ((cv && CvGV(cv))
- ? GvENAME(CvGV(cv))
- : "__ANON__")));
+ const HEK * const hek = gv
+ ? GvENAME_HEK(gv)
+ : cv && CvNAMED(cv)
+ ? CvNAME_HEK(cv)
+ : cv && CvGV(cv) ? GvENAME_HEK(CvGV(cv)) : NULL;
+ if (hek)
+ Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
+ "SIG%s handler \"%" HEKf "\" not defined.\n",
+ PL_sig_name[sig], HEKfARG(hek));
+ /* diag_listed_as: SIG%s handler "%s" not defined */
+ else Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
+ "SIG%s handler \"__ANON__\" not defined.\n",
+ PL_sig_name[sig]);
goto cleanup;
}
* addr, status, and band are defined by POSIX/SUSv3. */
(void)hv_stores(sih, "signo", newSViv(sip->si_signo));
(void)hv_stores(sih, "code", newSViv(sip->si_code));
-#if 0 /* XXX TODO: Configure scan for the existence of these, but even that does not help if the SA_SIGINFO is not implemented according to the spec. */
- hv_stores(sih, "errno", newSViv(sip->si_errno));
- hv_stores(sih, "status", newSViv(sip->si_status));
- hv_stores(sih, "uid", newSViv(sip->si_uid));
- hv_stores(sih, "pid", newSViv(sip->si_pid));
- hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr)));
- hv_stores(sih, "band", newSViv(sip->si_band));
+#ifdef HAS_SIGINFO_SI_ERRNO
+ (void)hv_stores(sih, "errno", newSViv(sip->si_errno));
+#endif
+#ifdef HAS_SIGINFO_SI_STATUS
+ (void)hv_stores(sih, "status", newSViv(sip->si_status));
+#endif
+#ifdef HAS_SIGINFO_SI_UID
+ {
+ SV *uid = newSV(0);
+ sv_setuid(uid, sip->si_uid);
+ (void)hv_stores(sih, "uid", uid);
+ }
+#endif
+#ifdef HAS_SIGINFO_SI_PID
+ (void)hv_stores(sih, "pid", newSViv(sip->si_pid));
+#endif
+#ifdef HAS_SIGINFO_SI_ADDR
+ (void)hv_stores(sih, "addr", newSVuv(PTR2UV(sip->si_addr)));
+#endif
+#ifdef HAS_SIGINFO_SI_BAND
+ (void)hv_stores(sih, "band", newSViv(sip->si_band));
#endif
EXTEND(SP, 2);
PUSHs(rv);
}
}
-cleanup:
+ cleanup:
/* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */
PL_savestack_ix = old_ss_ix;
if (flags & 8)
static void
S_restore_magic(pTHX_ const void *p)
{
- dVAR;
MGS* const mgs = SSPTR(PTR2IV(p), MGS*);
SV* const sv = mgs->mgs_sv;
bool bumped;
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
SvTEMP_off(sv); /* if it's still magical, this value isn't temporary */
-#ifdef PERL_OLD_COPY_ON_WRITE
- /* While magic was saved (and off) sv_setsv may well have seen
- this SV as a prime candidate for COW. */
- if (SvIsCOW(sv))
- sv_force_normal_flags(sv, 0);
-#endif
- if (mgs->mgs_readonly)
- SvREADONLY_on(sv);
- if (mgs->mgs_magical)
- SvFLAGS(sv) |= mgs->mgs_magical;
+ if (mgs->mgs_flags)
+ SvFLAGS(sv) |= mgs->mgs_flags;
else
mg_magical(sv);
}
static void
S_unwind_handler_stack(pTHX_ const void *p)
{
- dVAR;
PERL_UNUSED_ARG(p);
PL_savestack_ix -= 5; /* Unprotect save in progress. */
/*
=for apidoc magic_sethint
-Triggered by a store to %^H, records the key/value pair to
+Triggered by a store to C<%^H>, records the key/value pair to
C<PL_compiling.cop_hints_hash>. It is assumed that hints aren't storing
anything that would need a deep copy. Maybe we should warn if we find a
reference.
int
Perl_magic_sethint(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
SV *key = (mg->mg_len == HEf_SVKEY) ? MUTABLE_SV(mg->mg_ptr)
: newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP);
/*
=for apidoc magic_clearhint
-Triggered by a delete from %^H, records the key to
+Triggered by a delete from C<%^H>, records the key to
C<PL_compiling.cop_hints_hash>.
=cut
int
Perl_magic_clearhint(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR;
-
PERL_ARGS_ASSERT_MAGIC_CLEARHINT;
PERL_UNUSED_ARG(sv);
/*
=for apidoc magic_clearhints
-Triggered by clearing
%^H, resets C<PL_compiling.cop_hints_hash>.
+Triggered by clearing
C<%^H>, resets C<PL_compiling.cop_hints_hash>.
=cut
*/
sv_magic(nsv, &PL_sv_undef, mg->mg_type, NULL, 0);
nmg = mg_find(nsv, mg->mg_type);
+ assert(nmg);
if (nmg->mg_flags & MGf_REFCOUNTED) SvREFCNT_dec(nmg->mg_obj);
nmg->mg_ptr = mg->mg_ptr;
nmg->mg_obj = SvREFCNT_inc_simple(mg->mg_obj);
return 1;
}
+int
+Perl_magic_setdebugvar(pTHX_ SV *sv, MAGIC *mg) {
+ PERL_ARGS_ASSERT_MAGIC_SETDEBUGVAR;
+
+#if DBVARMG_SINGLE != 0
+ assert(mg->mg_private >= DBVARMG_SINGLE);
+#endif
+ assert(mg->mg_private < DBVARMG_COUNT);
+
+ PL_DBcontrol[mg->mg_private] = SvIV_nomg(sv);
+
+ return 1;
+}
+
+int
+Perl_magic_getdebugvar(pTHX_ SV *sv, MAGIC *mg) {
+ PERL_ARGS_ASSERT_MAGIC_GETDEBUGVAR;
+
+#if DBVARMG_SINGLE != 0
+ assert(mg->mg_private >= DBVARMG_SINGLE);
+#endif
+ assert(mg->mg_private < DBVARMG_COUNT);
+ sv_setiv(sv, PL_DBcontrol[mg->mg_private]);
+
+ return 0;
+}
+
/*
- * Local variables:
- * c-indentation-style: bsd
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- *
* ex: set ts=8 sts=4 sw=4 et:
*/
https://perl5.git.perl.org / perl5.git / blobdiff