/*
=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
*/
=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
*/
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);
~(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;
/*
=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
*/
=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
*/
/*
=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
*/
/*
=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
*/
=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
*/
/*
=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
/*
=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
*/
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) {
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;
+ }
+ }
}
}
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;
+ 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)
(t = RX_OFFS(rx)[paren].end) != -1)
{
SSize_t i;
- if (mg->mg_obj) /* @+ */
+
+ if (n == '+') /* @+ */
i = t;
- else /* @- */
+ else if (n == '-') /* @- */
i = s;
+ else { /* @^CAPTURE @{^CAPTURE} */
+ CALLREG_NUMBUF_FETCH(rx,paren,sv);
+ return 0;
+ }
if (RX_MATCH_UTF8(rx)) {
const char * const b = RX_SUBBEG(rx);
}
}
}
- sv_setsv(sv, NULL);
+ sv_set_undef(sv);
return 0;
}
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);
* 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 (! IN_BYTES /* respect 'use bytes' */
- && ! is_invariant_string((U8*) SvPVX_const(sv), SvCUR(sv))
- && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv)))
- {
+ * error message text, so do an additional check. */
+ if ( ! IN_BYTES /* respect 'use bytes' */
+ && ! is_utf8_invariant_string((U8*) SvPVX_const(sv), SvCUR(sv))
+ && is_utf8_string((U8*) SvPVX_const(sv), SvCUR(sv))
+
+#ifdef USE_LOCALE_MESSAGES
+
+ && _is_cur_LC_category_utf8(LC_MESSAGES)
+
+#elif defined(USE_LOCLAE_CTYPE)
+
+ /* For systems that don't have a separate message category,
+ * this assumes that they follow the CTYPE one */
+ && _is_cur_LC_category_utf8(LC_CTYPE)
+
+#endif
+
+ ) {
SvUTF8_on(sv);
}
}
}
-SV*
-Perl__get_encoding(pTHX)
-{
- /* For core Perl use only: Returns the $^ENCODING or 'use encoding' in
- * effect; NULL if none.
- *
- * $^ENCODING maps to PL_encoding, and is the old way to do things, and is
- * retained for backwards compatibility. Now, there is a shadow variable
- * ${^E_NCODING} set only by the encoding pragma, used to give this pragma
- * lexical scope, unlike the global scope it (shudder) used to have. This
- * variable maps to PL_lex_encoding. Again for backwards compatibility,
- * PL_encoding has precedence over PL_lex_encoding. The hints hash is used
- * to determine if PL_lex_encoding is in scope, and hence valid. The hints
- * hash only accepts simple values, so we can't put an Encode object into
- * it, so we put the object into the global, and put a simple boolean into
- * the hints hash giving whether the global is valid or not */
-
- dVAR;
- SV *is_encoding;
-
- if (PL_encoding) {
- return PL_encoding;
- }
+/*
+=for apidoc Am|SV *|sv_string_from_errnum|int errnum|SV *tgtsv
+
+Generates the message string describing an OS error and returns it as
+an SV. C<errnum> must be a value that C<errno> could take, identifying
+the type of error.
+
+If C<tgtsv> is non-null then the string will be written into that SV
+(overwriting existing content) and it will be returned. If C<tgtsv>
+is a null pointer then the string will be written into a new mortal SV
+which will be returned.
+
+The message will be taken from whatever locale would be used by C<$!>,
+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.
- if (! PL_lex_encoding) {
- return NULL;
- }
+=cut
+*/
- is_encoding = cop_hints_fetch_pvs(PL_curcop, "encoding", 0);
- if ( is_encoding
- && is_encoding != &PL_sv_placeholder
- && SvIOK(is_encoding)
- && SvIV(is_encoding)) /* non-zero mean valid */
- {
- return PL_lex_encoding;
+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 NULL;
+ return tgtsv;
}
#ifdef VMS
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
do_numbuf_fetch:
CALLREG_NUMBUF_FETCH(rx,paren,sv);
- } else {
- sv_setsv(sv,&PL_sv_undef);
}
+ else
+ goto set_undef;
return 0;
}
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;
case '\005': /* ^E */
if (nextchar != '\0') {
if (strEQ(remaining, "NCODING"))
- sv_setsv(sv, _get_encoding());
- else if (strEQ(remaining, "_NCODING"))
- sv_setsv(sv, NULL);
+ sv_set_undef(sv);
break;
}
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,"");
+ SvPVCLEAR(sv);
}
#elif defined(OS2)
if (!(_emx_env & 0x200)) { /* Under DOS */
fixup_errno_string(sv);
}
else
- sv_setpvs(sv, "");
+ SvPVCLEAR(sv);
SetLastError(dwErr);
}
# else
break;
#endif /* End of platforms with special handling for $^E; others just fall
through to $! */
+ /* FALLTHROUGH */
case '!':
{
else
#endif
if (! errno) {
- sv_setpvs(sv, "");
+ SvPVCLEAR(sv);
}
else {
-
- /* Strerror can return NULL on some platforms, which will
- * result in 'sv' not being considered SvOK. The SvNOK_on()
+ 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 */
- sv_setpv(sv, my_strerror(errno));
- if (SvOK(sv)) {
- fixup_errno_string(sv);
- }
+ if (!SvCUR(sv))
+ SvPOK_off(sv);
}
RESTORE_ERRNO;
}
}
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 '\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 $warnings::Bits{all}, because
*PL_compiling.cop_warnings);
}
}
+#ifdef WIN32
+ else if (strEQ(remaining, "IN32_SLOPPY_STAT")) {
+ sv_setiv(sv, w32_sloppystat);
+ }
+#endif
break;
case '+':
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
if (paren)
goto do_numbuf_fetch;
}
- sv_setsv(sv,&PL_sv_undef);
- break;
+ goto set_undef;
case '\016': /* ^N */
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
paren = RX_LASTCLOSEPAREN(rx);
if (paren)
goto do_numbuf_fetch;
}
- sv_setsv(sv,&PL_sv_undef);
- break;
+ goto set_undef;
case '.':
if (GvIO(PL_last_in_gv)) {
sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv)));
if (PL_ors_sv)
sv_copypv(sv, PL_ors_sv);
else
- sv_setsv(sv, &PL_sv_undef);
+ goto set_undef;
break;
case '$': /* $$ */
{
#ifdef HAS_GETGROUPS
{
Groups_t *gary = NULL;
- I32 i;
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]);
+ Perl_sv_catpvf(aTHX_ sv, " %" IVdf, (IV)gary[i]);
Safefree(gary);
}
}
break;
}
return 0;
+
+ set_undef:
+ sv_set_undef(sv);
+ return 0;
}
int
}
#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;
}
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);
}
* 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)
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
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--) {
/* 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'",
+ Perl_croak(aTHX_ "panic: magic_setdbline len=%" IVdf ", ptr='%s'",
(IV)mg->mg_len, mg->mg_ptr);
}
if (obj) {
sv_setiv(sv, AvFILL(obj));
} else {
- sv_setsv(sv, NULL);
+ sv_set_undef(sv);
}
return 0;
}
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;
}
sv_setuv(sv, i);
return 0;
}
- sv_setsv(sv,NULL);
+ sv_set_undef(sv);
return 0;
}
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;
}
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;
}
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);
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);
- sv_setuv(sv, do_vecget(lsv, LvTARGOFF(sv), LvTARGLEN(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;
}
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);
}
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
- const char *s;
I32 paren;
const REGEXP * rx;
I32 i;
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 {
- unsigned int offset = 1;
- bool lex = FALSE;
-
- /* It may be the shadow variable ${E_NCODING} which has lexical
- * scope. See comments at Perl__get_encoding in this file */
- if (*(mg->mg_ptr + 1) == '_') {
- if (CopSTASH(PL_curcop) != get_hv("encoding::",0))
- Perl_croak_no_modify();
- lex = TRUE;
- offset++;
- }
- if (strEQ(mg->mg_ptr + offset, "NCODING")) {
- if (lex) { /* Use the shadow global */
- SvREFCNT_dec(PL_lex_encoding);
- if (SvOK(sv) || SvGMAGICAL(sv)) {
- PL_lex_encoding = newSVsv(sv);
- }
- else {
- PL_lex_encoding = NULL;
- }
- }
- else { /* Use the regular global */
- SvREFCNT_dec(PL_encoding);
- if (SvOK(sv) || SvGMAGICAL(sv)) {
- if (PL_localizing != 2) {
- Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
- "Setting ${^ENCODING} is deprecated");
- }
- PL_encoding = newSVsv(sv);
- }
- else {
- PL_encoding = NULL;
- }
- }
- }
- }
+ else if (strEQ(mg->mg_ptr + 1, "NCODING") && SvOK(sv))
+ Perl_croak(aTHX_ "${^ENCODING} is no longer supported");
break;
case '\006': /* ^F */
PL_maxsysfd = SvIV(sv);
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);
}
}
}
+#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 '/':
{
- SV *tmpsv= 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 */
+ 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);
+ IV val = SvIV(referent);
if (val <= 0) {
- tmpsv= &PL_sv_undef;
- Perl_ck_warner_d(aTHX_ packWARN(WARN_DEPRECATED),
- "Setting $/ to a reference to %s as a form of slurp is deprecated, treating as undef",
- SvIV(SvRV(sv)) < 0 ? "a negative integer" : "zero"
- );
+ 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 */
+ /* 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(tmpsv);
+ PL_rs = newSVsv(sv);
}
break;
case '\\':
}
#ifdef HAS_SETRUID
PERL_UNUSED_RESULT(setruid(new_uid));
-#else
-#ifdef HAS_SETREUID
+#elif defined(HAS_SETREUID)
PERL_UNUSED_RESULT(setreuid(new_uid, (Uid_t)-1));
-#else
-#ifdef HAS_SETRESUID
+#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)
PERL_UNUSED_RESULT(PerlProc_setuid(0));
-#endif
+# endif
PERL_UNUSED_RESULT(PerlProc_setuid(new_uid));
} else {
Perl_croak(aTHX_ "setruid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case '>':
}
#ifdef HAS_SETEUID
PERL_UNUSED_RESULT(seteuid(new_euid));
-#else
-#ifdef HAS_SETREUID
+#elif defined(HAS_SETREUID)
PERL_UNUSED_RESULT(setreuid((Uid_t)-1, new_euid));
-#else
-#ifdef HAS_SETRESUID
+#elif defined(HAS_SETRESUID)
PERL_UNUSED_RESULT(setresuid((Uid_t)-1, new_euid, (Uid_t)-1));
#else
if (new_euid == PerlProc_getuid()) /* special case $> = $< */
Perl_croak(aTHX_ "seteuid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case '(':
}
#ifdef HAS_SETRGID
PERL_UNUSED_RESULT(setrgid(new_gid));
-#else
-#ifdef HAS_SETREGID
+#elif defined(HAS_SETREGID)
PERL_UNUSED_RESULT(setregid(new_gid, (Gid_t)-1));
-#else
-#ifdef HAS_SETRESGID
+#elif defined(HAS_SETRESGID)
PERL_UNUSED_RESULT(setresgid(new_gid, (Gid_t)-1, (Gid_t) -1));
#else
if (new_gid == PerlProc_getegid()) /* special case $( = $) */
Perl_croak(aTHX_ "setrgid() not implemented");
}
#endif
-#endif
-#endif
break;
}
case ')':
}
#ifdef HAS_SETEGID
PERL_UNUSED_RESULT(setegid(new_egid));
-#else
-#ifdef HAS_SETREGID
+#elif defined(HAS_SETREGID)
PERL_UNUSED_RESULT(setregid((Gid_t)-1, new_egid));
-#else
-#ifdef HAS_SETRESGID
+#elif defined(HAS_SETRESGID)
PERL_UNUSED_RESULT(setresgid((Gid_t)-1, new_egid, (Gid_t)-1));
#else
if (new_egid == PerlProc_getgid()) /* special case $) = $( */
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;
}
: cv && CvGV(cv) ? GvENAME_HEK(CvGV(cv)) : NULL;
if (hek)
Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
- "SIG%s handler \"%"HEKf"\" not defined.\n",
+ "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),
* 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);
/*
=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.
/*
=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
/*
=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
*/
https://perl5.git.perl.org / perl5.git / blobdiff