/* mg.c
*
- * Copyright (c) 1991-2001, Larry Wall
+ * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ * 2000, 2001, 2002, 2003, 2004, 2005 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* come here, and I don't want to see no more magic,' he said, and fell silent."
*/
+/*
+=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
+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
+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
+of functions that implement the get(), set(), length() etc functions,
+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.
+
+*/
+
#include "EXTERN.h"
#define PERL_IN_MG_C
#include "perl.h"
# endif
#endif
-static void restore_magic(pTHX_ void *p);
-static void unwind_handler_stack(pTHX_ void *p);
+#ifdef __hpux
+# include <sys/pstat.h>
+#endif
+
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+Signal_t Perl_csighandler(int sig, ...);
+#else
+Signal_t Perl_csighandler(int sig);
+#endif
+
+#ifdef __Lynx__
+/* Missing protos on LynxOS */
+void setruid(uid_t id);
+void seteuid(uid_t id);
+void setrgid(uid_t id);
+void setegid(uid_t id);
+#endif
/*
* Use the "DESTRUCTOR" scope cleanup to reinstate magic.
{
MGS* mgs;
assert(SvMAGICAL(sv));
+#ifdef PERL_OLD_COPY_ON_WRITE
+ /* Turning READONLY off for a copy-on-write scalar is a bad idea. */
+ if (SvIsCOW(sv))
+ sv_force_normal(sv);
+#endif
- SAVEDESTRUCTOR_X(restore_magic, INT2PTR(void*, (IV)mgs_ix));
+ SAVEDESTRUCTOR_X(S_restore_magic, INT2PTR(void*, (IV)mgs_ix));
mgs = SSPTR(mgs_ix, MGS*);
mgs->mgs_sv = sv;
void
Perl_mg_magical(pTHX_ SV *sv)
{
- MAGIC* mg;
+ const MAGIC* mg;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl) {
if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP))
SvGMAGICAL_on(sv);
int
Perl_mg_get(pTHX_ SV *sv)
{
- int new = 0;
+ const I32 mgs_ix = SSNEW(sizeof(MGS));
+ const bool was_temp = (bool)SvTEMP(sv);
+ int have_new = 0;
MAGIC *newmg, *head, *cur, *mg;
- I32 mgs_ix = SSNEW(sizeof(MGS));
+ /* guard against sv having being freed midway by holding a private
+ reference. */
+
+ /* sv_2mortal has this side effect of turning on the TEMP flag, which can
+ cause the SV's buffer to get stolen (and maybe other stuff).
+ So restore it.
+ */
+ sv_2mortal(SvREFCNT_inc(sv));
+ if (!was_temp) {
+ SvTEMP_off(sv);
+ }
save_magic(mgs_ix, sv);
newmg = cur = head = mg = SvMAGIC(sv);
while (mg) {
- MGVTBL *vtbl = mg->mg_virtual;
+ const MGVTBL * const vtbl = mg->mg_virtual;
if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg);
+
+ /* guard against magic having been deleted - eg FETCH calling
+ * untie */
+ if (!SvMAGIC(sv))
+ break;
+
/* Don't restore the flags for this entry if it was deleted. */
if (mg->mg_flags & MGf_GSKIP)
(SSPTR(mgs_ix, MGS *))->mgs_flags = 0;
mg = mg->mg_moremagic;
- if (new) {
+ if (have_new) {
/* Have we finished with the new entries we saw? Start again
where we left off (unless there are more new entries). */
if (mg == head) {
- new = 0;
+ have_new = 0;
mg = cur;
head = newmg;
}
}
/* Were any new entries added? */
- if (!new && (newmg = SvMAGIC(sv)) != head) {
- new = 1;
+ if (!have_new && (newmg = SvMAGIC(sv)) != head) {
+ have_new = 1;
cur = mg;
mg = newmg;
}
}
- restore_magic(aTHX_ INT2PTR(void *, (IV)mgs_ix));
+ restore_magic(INT2PTR(void *, (IV)mgs_ix));
+
+ if (SvREFCNT(sv) == 1) {
+ /* We hold the last reference to this SV, which implies that the
+ SV was deleted as a side effect of the routines we called. */
+ SvOK_off(sv);
+ }
return 0;
}
int
Perl_mg_set(pTHX_ SV *sv)
{
- I32 mgs_ix;
+ const I32 mgs_ix = SSNEW(sizeof(MGS));
MAGIC* mg;
MAGIC* nextmg;
- mgs_ix = SSNEW(sizeof(MGS));
save_magic(mgs_ix, sv);
for (mg = SvMAGIC(sv); mg; mg = nextmg) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL* vtbl = mg->mg_virtual;
nextmg = mg->mg_moremagic; /* it may delete itself */
if (mg->mg_flags & MGf_GSKIP) {
mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
}
- restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
+ restore_magic(INT2PTR(void*, (IV)mgs_ix));
return 0;
}
STRLEN len;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL * const vtbl = mg->mg_virtual;
if (vtbl && vtbl->svt_len) {
- I32 mgs_ix;
-
- mgs_ix = SSNEW(sizeof(MGS));
+ const I32 mgs_ix = SSNEW(sizeof(MGS));
save_magic(mgs_ix, sv);
/* omit MGf_GSKIP -- not changed here */
len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
- restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
+ restore_magic(INT2PTR(void*, (IV)mgs_ix));
return len;
}
}
- if (DO_UTF8(sv))
- {
- U8 *s = (U8*)SvPV(sv, len);
+ if (DO_UTF8(sv)) {
+ const U8 *s = (U8*)SvPV_const(sv, len);
len = Perl_utf8_length(aTHX_ s, s + len);
}
else
- (void)SvPV(sv, len);
+ (void)SvPV_const(sv, len);
return len;
}
Perl_mg_size(pTHX_ SV *sv)
{
MAGIC* mg;
- I32 len;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl && vtbl->svt_len) {
- I32 mgs_ix;
-
- mgs_ix = SSNEW(sizeof(MGS));
+ const I32 mgs_ix = SSNEW(sizeof(MGS));
+ I32 len;
save_magic(mgs_ix, sv);
/* omit MGf_GSKIP -- not changed here */
len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
- restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
+ restore_magic(INT2PTR(void*, (IV)mgs_ix));
return len;
}
}
switch(SvTYPE(sv)) {
case SVt_PVAV:
- len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
- return len;
+ return AvFILLp((AV *) sv); /* Fallback to non-tied array */
case SVt_PVHV:
/* FIXME */
default:
int
Perl_mg_clear(pTHX_ SV *sv)
{
- I32 mgs_ix;
+ const I32 mgs_ix = SSNEW(sizeof(MGS));
MAGIC* mg;
- mgs_ix = SSNEW(sizeof(MGS));
save_magic(mgs_ix, sv);
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL* const vtbl = mg->mg_virtual;
/* omit GSKIP -- never set here */
-
+
if (vtbl && vtbl->svt_clear)
CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
}
- restore_magic(aTHX_ INT2PTR(void*, (IV)mgs_ix));
+ restore_magic(INT2PTR(void*, (IV)mgs_ix));
return 0;
}
*/
MAGIC*
-Perl_mg_find(pTHX_ SV *sv, int type)
+Perl_mg_find(pTHX_ const SV *sv, int type)
{
- MAGIC* mg;
- if (!sv)
- return 0;
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- if (mg->mg_type == type)
- return mg;
+ if (sv) {
+ MAGIC *mg;
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ if (mg->mg_type == type)
+ return mg;
+ }
}
return 0;
}
int count = 0;
MAGIC* mg;
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- if (isUPPER(mg->mg_type)) {
+ const MGVTBL* const vtbl = mg->mg_virtual;
+ if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy){
+ count += CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv, key, klen);
+ }
+ else if (isUPPER(mg->mg_type)) {
sv_magic(nsv,
mg->mg_type == PERL_MAGIC_tied ? SvTIED_obj(sv, mg) :
(mg->mg_type == PERL_MAGIC_regdata && mg->mg_obj)
}
/*
+=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).
+
+=cut
+*/
+
+void
+Perl_mg_localize(pTHX_ SV *sv, SV *nsv)
+{
+ MAGIC *mg;
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ const MGVTBL* const vtbl = mg->mg_virtual;
+ switch (mg->mg_type) {
+ /* value magic types: don't copy */
+ case PERL_MAGIC_bm:
+ case PERL_MAGIC_fm:
+ case PERL_MAGIC_regex_global:
+ case PERL_MAGIC_nkeys:
+#ifdef USE_LOCALE_COLLATE
+ case PERL_MAGIC_collxfrm:
+#endif
+ case PERL_MAGIC_qr:
+ case PERL_MAGIC_taint:
+ case PERL_MAGIC_vec:
+ case PERL_MAGIC_vstring:
+ case PERL_MAGIC_utf8:
+ case PERL_MAGIC_substr:
+ case PERL_MAGIC_defelem:
+ case PERL_MAGIC_arylen:
+ case PERL_MAGIC_pos:
+ case PERL_MAGIC_backref:
+ case PERL_MAGIC_arylen_p:
+ case PERL_MAGIC_rhash:
+ case PERL_MAGIC_symtab:
+ continue;
+ }
+
+ if ((mg->mg_flags & MGf_COPY) && vtbl->svt_copy) {
+ /* XXX calling the copy method is probably not correct. DAPM */
+ (void)CALL_FPTR(vtbl->svt_copy)(aTHX_ sv, mg, nsv,
+ mg->mg_ptr, mg->mg_len);
+ }
+ else {
+ sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl,
+ mg->mg_ptr, mg->mg_len);
+ }
+ /* container types should remain read-only across localization */
+ SvFLAGS(nsv) |= SvREADONLY(sv);
+ }
+
+ if (SvTYPE(nsv) >= SVt_PVMG && SvMAGIC(nsv)) {
+ SvFLAGS(nsv) |= SvMAGICAL(sv);
+ PL_localizing = 1;
+ SvSETMAGIC(nsv);
+ PL_localizing = 0;
+ }
+}
+
+/*
=for apidoc mg_free
Free any magic storage used by the SV. See C<sv_magic>.
MAGIC* mg;
MAGIC* moremagic;
for (mg = SvMAGIC(sv); mg; mg = moremagic) {
- MGVTBL* vtbl = mg->mg_virtual;
+ const MGVTBL* const vtbl = mg->mg_virtual;
moremagic = mg->mg_moremagic;
if (vtbl && vtbl->svt_free)
CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
- if (mg->mg_len >= 0)
+ if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8)
Safefree(mg->mg_ptr);
else if (mg->mg_len == HEf_SVKEY)
SvREFCNT_dec((SV*)mg->mg_ptr);
SvREFCNT_dec(mg->mg_obj);
Safefree(mg);
}
- SvMAGIC(sv) = 0;
+ SvMAGIC_set(sv, NULL);
return 0;
}
-
-#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
#include <signal.h>
-#endif
U32
Perl_magic_regdata_cnt(pTHX_ SV *sv, MAGIC *mg)
{
- register REGEXP *rx;
+ register const REGEXP *rx;
+ PERL_UNUSED_ARG(sv);
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
if (mg->mg_obj) /* @+ */
int
Perl_magic_regdatum_get(pTHX_ SV *sv, MAGIC *mg)
{
- register I32 paren;
- register I32 s;
- register I32 i;
register REGEXP *rx;
- I32 t;
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
- paren = mg->mg_len;
+ register const I32 paren = mg->mg_len;
+ register I32 s;
+ register I32 t;
if (paren < 0)
return 0;
- if (paren <= rx->nparens &&
+ if (paren <= (I32)rx->nparens &&
(s = rx->startp[paren]) != -1 &&
(t = rx->endp[paren]) != -1)
{
+ register I32 i;
if (mg->mg_obj) /* @+ */
i = t;
else /* @- */
i = s;
-
- if (i > 0 && PL_reg_match_utf8) {
- char *b = rx->subbeg;
+
+ if (i > 0 && RX_MATCH_UTF8(rx)) {
+ const char * const b = rx->subbeg;
if (b)
i = Perl_utf8_length(aTHX_ (U8*)b, (U8*)(b+i));
}
int
Perl_magic_regdatum_set(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(sv); PERL_UNUSED_ARG(mg);
Perl_croak(aTHX_ PL_no_modify);
- /* NOT REACHED */
- return 0;
+ NORETURN_FUNCTION_END;
}
U32
{
register I32 paren;
register I32 i;
- register REGEXP *rx;
+ register const REGEXP *rx;
I32 s1, t1;
switch (*mg->mg_ptr) {
paren = atoi(mg->mg_ptr); /* $& is in [0] */
getparen:
- if (paren <= rx->nparens &&
+ if (paren <= (I32)rx->nparens &&
(s1 = rx->startp[paren]) != -1 &&
(t1 = rx->endp[paren]) != -1)
{
i = t1 - s1;
getlen:
- if (i > 0 && PL_reg_match_utf8) {
- char *s = rx->subbeg + s1;
- char *send = rx->subbeg + t1;
-
- i = t1 - s1;
- if (is_utf8_string((U8*)s, i))
- i = Perl_utf8_length(aTHX_ (U8*)s, (U8*)send);
+ if (i > 0 && RX_MATCH_UTF8(rx)) {
+ const char * const s = rx->subbeg + s1;
+ const U8 *ep;
+ STRLEN el;
+
+ i = t1 - s1;
+ if (is_utf8_string_loclen((U8*)s, i, &ep, &el))
+ i = el;
}
if (i < 0)
Perl_croak(aTHX_ "panic: magic_len: %"IVdf, (IV)i);
return i;
}
+ else {
+ if (ckWARN(WARN_UNINITIALIZED))
+ report_uninit(sv);
+ }
+ }
+ else {
+ if (ckWARN(WARN_UNINITIALIZED))
+ report_uninit(sv);
}
return 0;
case '+':
}
magic_get(sv,mg);
if (!SvPOK(sv) && SvNIOK(sv)) {
- STRLEN n_a;
- sv_2pv(sv, &n_a);
+ sv_2pv(sv, 0);
}
if (SvPOK(sv))
return SvCUR(sv);
return 0;
}
+#define SvRTRIM(sv) STMT_START { \
+ STRLEN len = SvCUR(sv); \
+ while (len > 0 && isSPACE(SvPVX(sv)[len-1])) \
+ --len; \
+ SvCUR_set(sv, len); \
+} STMT_END
+
int
Perl_magic_get(pTHX_ SV *sv, MAGIC *mg)
{
+ dVAR;
register I32 paren;
- register char *s;
+ register char *s = NULL;
register I32 i;
register REGEXP *rx;
case '\001': /* ^A */
sv_setsv(sv, PL_bodytarget);
break;
- case '\003': /* ^C */
- sv_setiv(sv, (IV)PL_minus_c);
+ case '\003': /* ^C, ^CHILD_ERROR_NATIVE */
+ if (*(mg->mg_ptr+1) == '\0') {
+ sv_setiv(sv, (IV)PL_minus_c);
+ }
+ else if (strEQ(mg->mg_ptr, "\003HILD_ERROR_NATIVE")) {
+ sv_setiv(sv, (IV)STATUS_NATIVE);
+ }
break;
case '\004': /* ^D */
sv_setiv(sv, (IV)(PL_debug & DEBUG_MASK));
-#if defined(YYDEBUG) && defined(DEBUGGING)
- PL_yydebug = DEBUG_p_TEST;
-#endif
break;
case '\005': /* ^E */
+ if (*(mg->mg_ptr+1) == '\0') {
#ifdef MACOS_TRADITIONAL
- {
- char msg[256];
-
- sv_setnv(sv,(double)gMacPerl_OSErr);
- sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
- }
-#else
+ {
+ char msg[256];
+
+ sv_setnv(sv,(double)gMacPerl_OSErr);
+ sv_setpv(sv, gMacPerl_OSErr ? GetSysErrText(gMacPerl_OSErr, msg) : "");
+ }
+#else
#ifdef VMS
- {
-# include <descrip.h>
-# include <starlet.h>
- 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_setpv(sv,"");
- }
+ {
+# include <descrip.h>
+# include <starlet.h>
+ 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_setpvn(sv,"",0);
+ }
#else
#ifdef OS2
- if (!(_emx_env & 0x200)) { /* Under DOS */
- sv_setnv(sv, (NV)errno);
- sv_setpv(sv, errno ? Strerror(errno) : "");
- } else {
- if (errno != errno_isOS2) {
- 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 (!(_emx_env & 0x200)) { /* Under DOS */
+ sv_setnv(sv, (NV)errno);
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+ } else {
+ if (errno != errno_isOS2) {
+ 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));
+ }
#else
#ifdef WIN32
- {
- DWORD dwErr = GetLastError();
- sv_setnv(sv, (NV)dwErr);
- if (dwErr)
- {
- PerlProc_GetOSError(sv, dwErr);
- }
- else
- sv_setpv(sv, "");
- SetLastError(dwErr);
- }
+ {
+ DWORD dwErr = GetLastError();
+ sv_setnv(sv, (NV)dwErr);
+ if (dwErr)
+ {
+ PerlProc_GetOSError(sv, dwErr);
+ }
+ else
+ sv_setpvn(sv, "", 0);
+ SetLastError(dwErr);
+ }
#else
- sv_setnv(sv, (NV)errno);
- sv_setpv(sv, errno ? Strerror(errno) : "");
+ {
+ const int saveerrno = errno;
+ sv_setnv(sv, (NV)errno);
+ sv_setpv(sv, errno ? Strerror(errno) : "");
+ errno = saveerrno;
+ }
#endif
#endif
#endif
#endif
- SvNOK_on(sv); /* what a wonderful hack! */
- break;
+ SvRTRIM(sv);
+ SvNOK_on(sv); /* what a wonderful hack! */
+ }
+ else if (strEQ(mg->mg_ptr+1, "NCODING"))
+ sv_setsv(sv, PL_encoding);
+ break;
case '\006': /* ^F */
sv_setiv(sv, (IV)PL_maxsysfd);
break;
sv_setsv(sv, &PL_sv_undef);
break;
case '\017': /* ^O & ^OPEN */
- if (*(mg->mg_ptr+1) == '\0')
+ if (*(mg->mg_ptr+1) == '\0') {
sv_setpv(sv, PL_osname);
+ SvTAINTED_off(sv);
+ }
else if (strEQ(mg->mg_ptr, "\017PEN")) {
if (!PL_compiling.cop_io)
sv_setsv(sv, &PL_sv_undef);
sv_setiv(sv, (IV)PL_perldb);
break;
case '\023': /* ^S */
- {
+ if (*(mg->mg_ptr+1) == '\0') {
if (PL_lex_state != LEX_NOTPARSING)
- (void)SvOK_off(sv);
+ SvOK_off(sv);
else if (PL_in_eval)
sv_setiv(sv, PL_in_eval & ~(EVAL_INREQUIRE));
else
#endif
}
else if (strEQ(mg->mg_ptr, "\024AINT"))
- sv_setiv(sv, PL_tainting);
+ sv_setiv(sv, PL_tainting
+ ? (PL_taint_warn || PL_unsafe ? -1 : 1)
+ : 0);
+ break;
+ case '\025': /* $^UNICODE, $^UTF8LOCALE */
+ if (strEQ(mg->mg_ptr, "\025NICODE"))
+ sv_setuv(sv, (UV) PL_unicode);
+ else if (strEQ(mg->mg_ptr, "\025TF8LOCALE"))
+ sv_setuv(sv, (UV) PL_utf8locale);
break;
- case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
+ case '\027': /* ^W & $^WARNING_BITS */
if (*(mg->mg_ptr+1) == '\0')
sv_setiv(sv, (IV)((PL_dowarn & G_WARN_ON) ? TRUE : FALSE));
- else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
- if (PL_compiling.cop_warnings == pWARN_NONE ||
- PL_compiling.cop_warnings == pWARN_STD)
- {
+ else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
+ if (PL_compiling.cop_warnings == pWARN_NONE) {
sv_setpvn(sv, WARN_NONEstring, WARNsize) ;
- }
+ }
+ else if (PL_compiling.cop_warnings == pWARN_STD) {
+ sv_setpvn(
+ sv,
+ (PL_dowarn & G_WARN_ON) ? WARN_ALLstring : WARN_NONEstring,
+ WARNsize
+ );
+ }
else if (PL_compiling.cop_warnings == pWARN_ALL) {
- sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
+ /* Get the bit mask for $warnings::Bits{all}, because
+ * it could have been extended by warnings::register */
+ SV **bits_all;
+ HV *bits=get_hv("warnings::Bits", FALSE);
+ if (bits && (bits_all=hv_fetch(bits, "all", 3, FALSE))) {
+ sv_setsv(sv, *bits_all);
+ }
+ else {
+ sv_setpvn(sv, WARN_ALLstring, WARNsize) ;
+ }
}
else {
sv_setsv(sv, PL_compiling.cop_warnings);
}
SvPOK_only(sv);
}
- else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
- sv_setiv(sv, (IV)PL_widesyscalls);
break;
case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': case '&':
*/
paren = atoi(mg->mg_ptr); /* $& is in [0] */
getparen:
- if (paren <= rx->nparens &&
+ if (paren <= (I32)rx->nparens &&
(s1 = rx->startp[paren]) != -1 &&
(t1 = rx->endp[paren]) != -1)
{
getrx:
if (i >= 0) {
- bool was_tainted = FALSE;
- if (PL_tainting) {
- was_tainted = PL_tainted;
- PL_tainted = FALSE;
- }
sv_setpvn(sv, s, i);
- if (PL_reg_match_utf8 && is_utf8_string((U8*)s, i))
+ if (RX_MATCH_UTF8(rx) && is_utf8_string((U8*)s, i))
SvUTF8_on(sv);
else
SvUTF8_off(sv);
- if (PL_tainting)
- PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
+ if (PL_tainting) {
+ if (RX_MATCH_TAINTED(rx)) {
+ MAGIC* mg = SvMAGIC(sv);
+ MAGIC* mgt;
+ PL_tainted = 1;
+ SvMAGIC_set(sv, mg->mg_moremagic);
+ SvTAINT(sv);
+ if ((mgt = SvMAGIC(sv))) {
+ mg->mg_moremagic = mgt;
+ SvMAGIC_set(sv, mg);
+ }
+ } else
+ SvTAINTED_off(sv);
+ }
break;
}
}
sv_setsv(sv,&PL_sv_undef);
break;
case '.':
-#ifndef lint
if (GvIO(PL_last_in_gv)) {
sv_setiv(sv, (IV)IoLINES(GvIOp(PL_last_in_gv)));
}
-#endif
break;
case '?':
{
}
break;
case '^':
- s = IoTOP_NAME(GvIOp(PL_defoutgv));
+ if (GvIOp(PL_defoutgv))
+ s = IoTOP_NAME(GvIOp(PL_defoutgv));
if (s)
sv_setpv(sv,s);
else {
}
break;
case '~':
- s = IoFMT_NAME(GvIOp(PL_defoutgv));
+ if (GvIOp(PL_defoutgv))
+ s = IoFMT_NAME(GvIOp(PL_defoutgv));
if (!s)
s = GvENAME(PL_defoutgv);
sv_setpv(sv,s);
break;
-#ifndef lint
case '=':
- sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
+ if (GvIOp(PL_defoutgv))
+ sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
break;
case '-':
- sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
+ if (GvIOp(PL_defoutgv))
+ sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
break;
case '%':
- sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
+ if (GvIOp(PL_defoutgv))
+ sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
break;
-#endif
case ':':
break;
case '/':
WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
break;
case '|':
- sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
+ if (GvIOp(PL_defoutgv))
+ sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
break;
case ',':
break;
case '\\':
- break;
- case '#':
- sv_setpv(sv,PL_ofmt);
+ if (PL_ors_sv)
+ sv_copypv(sv, PL_ors_sv);
break;
case '!':
#ifdef VMS
sv_setpv(sv, errno ? Strerror(errno) : "");
#else
{
- int saveerrno = errno;
+ const int saveerrno = errno;
sv_setnv(sv, (NV)errno);
#ifdef OS2
if (errno == errno_isOS2 || errno == errno_isOS2_set)
errno = saveerrno;
}
#endif
+ SvRTRIM(sv);
SvNOK_on(sv); /* what a wonderful hack! */
break;
case '<':
case '(':
sv_setiv(sv, (IV)PL_gid);
#ifdef HAS_GETGROUPS
- Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_gid);
+ Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, (long unsigned int)PL_gid);
#endif
goto add_groups;
case ')':
sv_setiv(sv, (IV)PL_egid);
#ifdef HAS_GETGROUPS
- Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, PL_egid);
+ Perl_sv_setpvf(aTHX_ sv, "%"Gid_t_f, (long unsigned int)PL_egid);
#endif
add_groups:
#ifdef HAS_GETGROUPS
{
Groups_t gary[NGROUPS];
- i = getgroups(NGROUPS,gary);
- while (--i >= 0)
- Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, gary[i]);
+ I32 j = getgroups(NGROUPS,gary);
+ while (--j >= 0)
+ Perl_sv_catpvf(aTHX_ sv, " %"Gid_t_f, (long unsigned int)gary[j]);
}
#endif
(void)SvIOK_on(sv); /* what a wonderful hack! */
break;
- case '*':
- break;
#ifndef MACOS_TRADITIONAL
case '0':
break;
#endif
-#ifdef USE_5005THREADS
- case '@':
- sv_setsv(sv, thr->errsv);
- break;
-#endif /* USE_5005THREADS */
}
return 0;
}
int
Perl_magic_getuvar(pTHX_ SV *sv, MAGIC *mg)
{
- struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
+ struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr;
if (uf && uf->uf_val)
(*uf->uf_val)(aTHX_ uf->uf_index, sv);
int
Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
{
- register char *s;
- char *ptr;
+ dVAR;
+ const char *s;
+ const char *ptr;
STRLEN len, klen;
- I32 i;
- s = SvPV(sv,len);
- ptr = MgPV(mg,klen);
+ s = SvPV_const(sv,len);
+ ptr = MgPV_const(mg,klen);
my_setenv(ptr, s);
#ifdef DYNAMIC_ENV_FETCH
if (!len) {
SV **valp;
if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
- s = SvPV(*valp, len);
+ s = SvPV_const(*valp, len);
}
#endif
MgTAINTEDDIR_off(mg);
#ifdef VMS
if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
- char pathbuf[256], eltbuf[256], *cp, *elt = s;
- struct stat sbuf;
+ char pathbuf[256], eltbuf[256], *cp, *elt;
+ Stat_t sbuf;
int i = 0, j = 0;
+ strncpy(eltbuf, s, 255);
+ eltbuf[255] = 0;
+ elt = eltbuf;
do { /* DCL$PATH may be a search list */
while (1) { /* as may dev portion of any element */
if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
}
#endif /* VMS */
if (s && klen == 4 && strEQ(ptr,"PATH")) {
- char *strend = s + len;
+ const char * const strend = s + len;
while (s < strend) {
char tmpbuf[256];
- struct stat st;
+ Stat_t st;
+ I32 i;
s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
s, strend, ':', &i);
s++;
int
Perl_magic_clearenv(pTHX_ SV *sv, MAGIC *mg)
{
- STRLEN n_a;
- my_setenv(MgPV(mg,n_a),Nullch);
+ PERL_UNUSED_ARG(sv);
+ my_setenv(MgPV_nolen_const(mg),Nullch);
return 0;
}
int
Perl_magic_set_all_env(pTHX_ SV *sv, MAGIC *mg)
{
-#if defined(VMS)
+#if defined(VMS) || defined(EPOC) || defined(SYMBIAN)
Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
#else
if (PL_localizing) {
HE* entry;
- STRLEN n_a;
magic_clear_all_env(sv,mg);
hv_iterinit((HV*)sv);
while ((entry = hv_iternext((HV*)sv))) {
I32 keylen;
my_setenv(hv_iterkey(entry, &keylen),
- SvPV(hv_iterval((HV*)sv, entry), n_a));
+ SvPV_nolen_const(hv_iterval((HV*)sv, entry)));
}
}
#endif
int
Perl_magic_clear_all_env(pTHX_ SV *sv, MAGIC *mg)
{
-#if defined(VMS) || defined(EPOC)
+ dVAR;
+#ifndef PERL_MICRO
+#if defined(VMS) || defined(EPOC) || defined(SYMBIAN)
Perl_die(aTHX_ "Can't make list assignment to %%ENV on this system");
#else
-# ifdef PERL_IMPLICIT_SYS
+# if defined(PERL_IMPLICIT_SYS) || defined(WIN32)
PerlEnv_clearenv();
-# else
-# ifdef WIN32
- char *envv = GetEnvironmentStrings();
- char *cur = envv;
- STRLEN len;
- while (*cur) {
- char *end = strchr(cur,'=');
- if (end && end != cur) {
- *end = '\0';
- my_setenv(cur,Nullch);
- *end = '=';
- cur = end + strlen(end+1)+2;
- }
- else if ((len = strlen(cur)))
- cur += len+1;
- }
- FreeEnvironmentStrings(envv);
-# else
-#ifdef USE_ENVIRON_ARRAY
-# ifndef PERL_USE_SAFE_PUTENV
+# else
+# ifdef USE_ENVIRON_ARRAY
+# if defined(USE_ITHREADS)
+ /* only the parent thread can clobber the process environment */
+ if (PL_curinterp == aTHX)
+# endif
+ {
+# ifndef PERL_USE_SAFE_PUTENV
+ if (!PL_use_safe_putenv) {
I32 i;
if (environ == PL_origenviron)
else
for (i = 0; environ[i]; i++)
safesysfree(environ[i]);
-# endif /* PERL_USE_SAFE_PUTENV */
+ }
+# endif /* PERL_USE_SAFE_PUTENV */
environ[0] = Nullch;
-
-#endif /* USE_ENVIRON_ARRAY */
-# endif /* WIN32 */
-# endif /* PERL_IMPLICIT_SYS */
-#endif /* VMS */
+ }
+# endif /* USE_ENVIRON_ARRAY */
+# endif /* PERL_IMPLICIT_SYS || WIN32 */
+#endif /* VMS || EPOC */
+#endif /* !PERL_MICRO */
+ PERL_UNUSED_ARG(sv);
+ PERL_UNUSED_ARG(mg);
return 0;
}
#ifndef PERL_MICRO
+#ifdef HAS_SIGPROCMASK
+static void
+restore_sigmask(pTHX_ SV *save_sv)
+{
+ const sigset_t *ossetp = (const sigset_t *) SvPV_nolen_const( save_sv );
+ (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0);
+}
+#endif
int
Perl_magic_getsig(pTHX_ SV *sv, MAGIC *mg)
{
- I32 i;
- STRLEN n_a;
/* Are we fetching a signal entry? */
- i = whichsig(MgPV(mg,n_a));
- if (i) {
+ const I32 i = whichsig(MgPV_nolen_const(mg));
+ if (i > 0) {
if(PL_psig_ptr[i])
sv_setsv(sv,PL_psig_ptr[i]);
else {
- Sighandler_t sigstate = rsignal_state(i);
-
+ Sighandler_t sigstate;
+ sigstate = rsignal_state(i);
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+ if (PL_sig_handlers_initted && PL_sig_ignoring[i]) sigstate = SIG_IGN;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ if (PL_sig_handlers_initted && PL_sig_defaulting[i]) sigstate = SIG_DFL;
+#endif
/* cache state so we don't fetch it again */
- if(sigstate == SIG_IGN)
+ if(sigstate == (Sighandler_t) SIG_IGN)
sv_setpv(sv,"IGNORE");
else
sv_setsv(sv,&PL_sv_undef);
int
Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
{
- I32 i;
- STRLEN n_a;
- /* Are we clearing a signal entry? */
- i = whichsig(MgPV(mg,n_a));
- if (i) {
- if(PL_psig_ptr[i]) {
- SvREFCNT_dec(PL_psig_ptr[i]);
- PL_psig_ptr[i]=0;
- }
- if(PL_psig_name[i]) {
- SvREFCNT_dec(PL_psig_name[i]);
- PL_psig_name[i]=0;
- }
+ /* XXX Some of this code was copied from Perl_magic_setsig. A little
+ * refactoring might be in order.
+ */
+ dVAR;
+ register const char * const s = MgPV_nolen_const(mg);
+ PERL_UNUSED_ARG(sv);
+ if (*s == '_') {
+ SV** svp = 0;
+ if (strEQ(s,"__DIE__"))
+ svp = &PL_diehook;
+ else if (strEQ(s,"__WARN__"))
+ svp = &PL_warnhook;
+ else
+ Perl_croak(aTHX_ "No such hook: %s", s);
+ if (svp && *svp) {
+ SV * const to_dec = *svp;
+ *svp = 0;
+ SvREFCNT_dec(to_dec);
+ }
+ }
+ else {
+ /* Are we clearing a signal entry? */
+ const I32 i = whichsig(s);
+ if (i > 0) {
+#ifdef HAS_SIGPROCMASK
+ sigset_t set, save;
+ SV* save_sv;
+ /* Avoid having the signal arrive at a bad time, if possible. */
+ sigemptyset(&set);
+ sigaddset(&set,i);
+ sigprocmask(SIG_BLOCK, &set, &save);
+ ENTER;
+ save_sv = newSVpv((char *)(&save), sizeof(sigset_t));
+ SAVEFREESV(save_sv);
+ SAVEDESTRUCTOR_X(restore_sigmask, save_sv);
+#endif
+ PERL_ASYNC_CHECK();
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+ if (!PL_sig_handlers_initted) Perl_csighandler_init();
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ PL_sig_defaulting[i] = 1;
+ (void)rsignal(i, PL_csighandlerp);
+#else
+ (void)rsignal(i, (Sighandler_t) SIG_DFL);
+#endif
+ if(PL_psig_name[i]) {
+ SvREFCNT_dec(PL_psig_name[i]);
+ PL_psig_name[i]=0;
+ }
+ if(PL_psig_ptr[i]) {
+ SV *to_dec=PL_psig_ptr[i];
+ PL_psig_ptr[i]=0;
+ LEAVE;
+ SvREFCNT_dec(to_dec);
+ }
+ else
+ LEAVE;
+ }
}
return 0;
}
-void
-Perl_raise_signal(pTHX_ int sig)
+static void
+S_raise_signal(pTHX_ int sig)
{
/* Set a flag to say this signal is pending */
PL_psig_pend[sig]++;
}
Signal_t
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+Perl_csighandler(int sig, ...)
+#else
Perl_csighandler(int sig)
+#endif
{
-#ifdef PERL_OLD_SIGNALS
- /* Call the perl level handler now with risk we may be in malloc() etc. */
- (*PL_sighandlerp)(sig);
+#ifdef PERL_GET_SIG_CONTEXT
+ dTHXa(PERL_GET_SIG_CONTEXT);
#else
dTHX;
- Perl_raise_signal(aTHX_ sig);
#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+ (void) rsignal(sig, PL_csighandlerp);
+ if (PL_sig_ignoring[sig]) return;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ if (PL_sig_defaulting[sig])
+#ifdef KILL_BY_SIGPRC
+ exit((Perl_sig_to_vmscondition(sig)&STS$M_COND_ID)|STS$K_SEVERE|STS$M_INHIB_MSG);
+#else
+ exit(1);
+#endif
+#endif
+ if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
+ /* Call the perl level handler now--
+ * with risk we may be in malloc() etc. */
+ (*PL_sighandlerp)(sig);
+ else
+ S_raise_signal(aTHX_ sig);
+}
+
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+void
+Perl_csighandler_init(void)
+{
+ int sig;
+ if (PL_sig_handlers_initted) return;
+
+ for (sig = 1; sig < SIG_SIZE; sig++) {
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ dTHX;
+ PL_sig_defaulting[sig] = 1;
+ (void) rsignal(sig, PL_csighandlerp);
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+ PL_sig_ignoring[sig] = 0;
+#endif
+ }
+ PL_sig_handlers_initted = 1;
}
+#endif
void
Perl_despatch_signals(pTHX)
PL_sig_pending = 0;
for (sig = 1; sig < SIG_SIZE; sig++) {
if (PL_psig_pend[sig]) {
- PL_psig_pend[sig] = 0;
+ PERL_BLOCKSIG_ADD(set, sig);
+ PL_psig_pend[sig] = 0;
+ PERL_BLOCKSIG_BLOCK(set);
(*PL_sighandlerp)(sig);
+ PERL_BLOCKSIG_UNBLOCK(set);
}
}
}
int
Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
{
- register char *s;
+ dVAR;
I32 i;
SV** svp = 0;
+ /* Need to be careful with SvREFCNT_dec(), because that can have side
+ * effects (due to closures). We must make sure that the new disposition
+ * is in place before it is called.
+ */
+ SV* to_dec = 0;
STRLEN len;
+#ifdef HAS_SIGPROCMASK
+ sigset_t set, save;
+ SV* save_sv;
+#endif
- s = MgPV(mg,len);
+ register const char *s = MgPV_const(mg,len);
if (*s == '_') {
if (strEQ(s,"__DIE__"))
svp = &PL_diehook;
Perl_croak(aTHX_ "No such hook: %s", s);
i = 0;
if (*svp) {
- SvREFCNT_dec(*svp);
+ to_dec = *svp;
*svp = 0;
}
}
else {
i = whichsig(s); /* ...no, a brick */
- if (!i) {
+ if (i <= 0) {
if (ckWARN(WARN_SIGNAL))
- Perl_warner(aTHX_ WARN_SIGNAL, "No such signal: SIG%s", s);
+ Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s);
return 0;
}
+#ifdef HAS_SIGPROCMASK
+ /* Avoid having the signal arrive at a bad time, if possible. */
+ sigemptyset(&set);
+ sigaddset(&set,i);
+ sigprocmask(SIG_BLOCK, &set, &save);
+ ENTER;
+ save_sv = newSVpv((char *)(&save), sizeof(sigset_t));
+ SAVEFREESV(save_sv);
+ SAVEDESTRUCTOR_X(restore_sigmask, save_sv);
+#endif
+ PERL_ASYNC_CHECK();
+#if defined(FAKE_PERSISTENT_SIGNAL_HANDLERS) || defined(FAKE_DEFAULT_SIGNAL_HANDLERS)
+ if (!PL_sig_handlers_initted) Perl_csighandler_init();
+#endif
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+ PL_sig_ignoring[i] = 0;
+#endif
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ PL_sig_defaulting[i] = 0;
+#endif
SvREFCNT_dec(PL_psig_name[i]);
- SvREFCNT_dec(PL_psig_ptr[i]);
+ to_dec = PL_psig_ptr[i];
PL_psig_ptr[i] = SvREFCNT_inc(sv);
SvTEMP_off(sv); /* Make sure it doesn't go away on us */
PL_psig_name[i] = newSVpvn(s, len);
SvREADONLY_on(PL_psig_name[i]);
}
if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
- if (i)
- (void)rsignal(i, &Perl_csighandler);
+ if (i) {
+ (void)rsignal(i, PL_csighandlerp);
+#ifdef HAS_SIGPROCMASK
+ LEAVE;
+#endif
+ }
else
*svp = SvREFCNT_inc(sv);
+ if(to_dec)
+ SvREFCNT_dec(to_dec);
return 0;
}
s = SvPV_force(sv,len);
if (strEQ(s,"IGNORE")) {
- if (i)
- (void)rsignal(i, SIG_IGN);
- else
- *svp = 0;
+ if (i) {
+#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
+ PL_sig_ignoring[i] = 1;
+ (void)rsignal(i, PL_csighandlerp);
+#else
+ (void)rsignal(i, (Sighandler_t) SIG_IGN);
+#endif
+ }
}
else if (strEQ(s,"DEFAULT") || !*s) {
if (i)
- (void)rsignal(i, SIG_DFL);
- else
- *svp = 0;
+#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
+ {
+ PL_sig_defaulting[i] = 1;
+ (void)rsignal(i, PL_csighandlerp);
+ }
+#else
+ (void)rsignal(i, (Sighandler_t) SIG_DFL);
+#endif
}
else {
/*
if (!strchr(s,':') && !strchr(s,'\''))
sv_insert(sv, 0, 0, "main::", 6);
if (i)
- (void)rsignal(i, &Perl_csighandler);
+ (void)rsignal(i, PL_csighandlerp);
else
*svp = SvREFCNT_inc(sv);
}
+#ifdef HAS_SIGPROCMASK
+ if(i)
+ LEAVE;
+#endif
+ if(to_dec)
+ SvREFCNT_dec(to_dec);
return 0;
}
#endif /* !PERL_MICRO */
int
Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(sv);
+ PERL_UNUSED_ARG(mg);
PL_sub_generation++;
return 0;
}
int
Perl_magic_setamagic(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(sv);
+ PERL_UNUSED_ARG(mg);
/* HV_badAMAGIC_on(Sv_STASH(sv)); */
PL_amagic_generation++;
int
Perl_magic_getnkeys(pTHX_ SV *sv, MAGIC *mg)
{
- HV *hv = (HV*)LvTARG(sv);
+ HV * const hv = (HV*)LvTARG(sv);
I32 i = 0;
-
+ PERL_UNUSED_ARG(mg);
+
if (hv) {
(void) hv_iterinit(hv);
if (! SvTIED_mg((SV*)hv, PERL_MAGIC_tied))
int
Perl_magic_setnkeys(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
if (LvTARG(sv)) {
hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
}
/* caller is responsible for stack switching/cleanup */
STATIC int
-S_magic_methcall(pTHX_ SV *sv, MAGIC *mg, char *meth, I32 flags, int n, SV *val)
+S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val)
{
dSP;
}
STATIC int
-S_magic_methpack(pTHX_ SV *sv, MAGIC *mg, char *meth)
+S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth)
{
- dSP;
+ dVAR; dSP;
ENTER;
SAVETMPS;
int
Perl_magic_getpack(pTHX_ SV *sv, MAGIC *mg)
{
- magic_methpack(sv,mg,"FETCH");
if (mg->mg_ptr)
mg->mg_flags |= MGf_GSKIP;
+ magic_methpack(sv,mg,"FETCH");
return 0;
}
int
Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
{
- dSP;
+ dVAR; dSP;
ENTER;
PUSHSTACKi(PERLSI_MAGIC);
magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
U32
Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
{
- dSP;
+ dVAR; dSP;
U32 retval = 0;
ENTER;
int
Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
{
- dSP;
+ dVAR; dSP;
ENTER;
PUSHSTACKi(PERLSI_MAGIC);
call_method("CLEAR", G_SCALAR|G_DISCARD);
POPSTACK;
LEAVE;
+
return 0;
}
int
Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
{
- dSP;
- const char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
+ dVAR; dSP;
+ const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
ENTER;
SAVETMPS;
return magic_methpack(sv,mg,"EXISTS");
}
+SV *
+Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg)
+{
+ dVAR; dSP;
+ SV *retval = &PL_sv_undef;
+ SV * const tied = SvTIED_obj((SV*)hv, mg);
+ HV * const pkg = SvSTASH((SV*)SvRV(tied));
+
+ if (!gv_fetchmethod_autoload(pkg, "SCALAR", FALSE)) {
+ SV *key;
+ if (HvEITER_get(hv))
+ /* we are in an iteration so the hash cannot be empty */
+ return &PL_sv_yes;
+ /* no xhv_eiter so now use FIRSTKEY */
+ key = sv_newmortal();
+ magic_nextpack((SV*)hv, mg, key);
+ HvEITER_set(hv, NULL); /* need to reset iterator */
+ return SvOK(key) ? &PL_sv_yes : &PL_sv_no;
+ }
+
+ /* there is a SCALAR method that we can call */
+ ENTER;
+ PUSHSTACKi(PERLSI_MAGIC);
+ PUSHMARK(SP);
+ EXTEND(SP, 1);
+ PUSHs(tied);
+ PUTBACK;
+
+ if (call_method("SCALAR", G_SCALAR))
+ retval = *PL_stack_sp--;
+ POPSTACK;
+ LEAVE;
+ return retval;
+}
+
int
Perl_magic_setdbline(pTHX_ SV *sv, MAGIC *mg)
{
- OP *o;
- I32 i;
- GV* gv;
- SV** svp;
- STRLEN n_a;
-
- gv = PL_DBline;
- i = SvTRUE(sv);
- svp = av_fetch(GvAV(gv),
- atoi(MgPV(mg,n_a)), FALSE);
- if (svp && SvIOKp(*svp) && (o = INT2PTR(OP*,SvIVX(*svp))))
- o->op_private = i;
+ GV * const gv = PL_DBline;
+ const I32 i = SvTRUE(sv);
+ SV ** const svp = av_fetch(GvAV(gv),
+ atoi(MgPV_nolen_const(mg)), FALSE);
+ if (svp && SvIOKp(*svp)) {
+ OP * const o = INT2PTR(OP*,SvIVX(*svp));
+ if (o) {
+ /* set or clear breakpoint in the relevant control op */
+ if (i)
+ o->op_flags |= OPf_SPECIAL;
+ else
+ o->op_flags &= ~OPf_SPECIAL;
+ }
+ }
return 0;
}
int
-Perl_magic_getarylen(pTHX_ SV *sv, MAGIC *mg)
+Perl_magic_getarylen(pTHX_ SV *sv, const MAGIC *mg)
{
- sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
+ const AV * const obj = (AV*)mg->mg_obj;
+ if (obj) {
+ sv_setiv(sv, AvFILL(obj) + PL_curcop->cop_arybase);
+ } else {
+ SvOK_off(sv);
+ }
return 0;
}
int
Perl_magic_setarylen(pTHX_ SV *sv, MAGIC *mg)
{
- av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
+ AV * const obj = (AV*)mg->mg_obj;
+ if (obj) {
+ av_fill(obj, SvIV(sv) - PL_curcop->cop_arybase);
+ } else {
+ if (ckWARN(WARN_MISC))
+ Perl_warner(aTHX_ packWARN(WARN_MISC),
+ "Attempt to set length of freed array");
+ }
+ return 0;
+}
+
+int
+Perl_magic_freearylen_p(pTHX_ SV *sv, MAGIC *mg)
+{
+ PERL_UNUSED_ARG(sv);
+ /* during global destruction, mg_obj may already have been freed */
+ if (PL_in_clean_all)
+ return 0;
+
+ mg = mg_find (mg->mg_obj, PERL_MAGIC_arylen);
+
+ if (mg) {
+ /* arylen scalar holds a pointer back to the array, but doesn't own a
+ reference. Hence the we (the array) are about to go away with it
+ still pointing at us. Clear its pointer, else it would be pointing
+ at free memory. See the comment in sv_magic about reference loops,
+ and why it can't own a reference to us. */
+ mg->mg_obj = 0;
+ }
return 0;
}
int
Perl_magic_getpos(pTHX_ SV *sv, MAGIC *mg)
{
- SV* lsv = LvTARG(sv);
+ SV* const lsv = LvTARG(sv);
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
mg = mg_find(lsv, PERL_MAGIC_regex_global);
return 0;
}
}
- (void)SvOK_off(sv);
+ SvOK_off(sv);
return 0;
}
int
Perl_magic_setpos(pTHX_ SV *sv, MAGIC *mg)
{
- SV* lsv = LvTARG(sv);
+ SV* const lsv = LvTARG(sv);
SSize_t pos;
STRLEN len;
STRLEN ulen = 0;
if (pos < 0)
pos = 0;
}
- else if (pos > len)
+ else if (pos > (SSize_t)len)
pos = len;
if (ulen) {
sv_pos_u2b(lsv, &p, 0);
pos = p;
}
-
+
mg->mg_len = pos;
mg->mg_flags &= ~MGf_MINMATCH;
int
Perl_magic_getglob(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
if (SvFAKE(sv)) { /* FAKE globs can get coerced */
SvFAKE_off(sv);
gv_efullname3(sv,((GV*)sv), "*");
int
Perl_magic_setglob(pTHX_ SV *sv, MAGIC *mg)
{
- register char *s;
GV* gv;
- STRLEN n_a;
+ PERL_UNUSED_ARG(mg);
if (!SvOK(sv))
return 0;
- s = SvPV(sv, n_a);
- if (*s == '*' && s[1])
- s++;
- gv = gv_fetchpv(s,TRUE, SVt_PVGV);
+ gv = gv_fetchsv(sv,TRUE, SVt_PVGV);
if (sv == (SV*)gv)
return 0;
if (GvGP(sv))
Perl_magic_getsubstr(pTHX_ SV *sv, MAGIC *mg)
{
STRLEN len;
- SV *lsv = LvTARG(sv);
- char *tmps = SvPV(lsv,len);
+ SV * const lsv = LvTARG(sv);
+ const char * const tmps = SvPV_const(lsv,len);
I32 offs = LvTARGOFF(sv);
I32 rem = LvTARGLEN(sv);
+ PERL_UNUSED_ARG(mg);
if (SvUTF8(lsv))
sv_pos_u2b(lsv, &offs, &rem);
- if (offs > len)
+ if (offs > (I32)len)
offs = len;
- if (rem + offs > len)
+ if (rem + offs > (I32)len)
rem = len - offs;
sv_setpvn(sv, tmps + offs, (STRLEN)rem);
if (SvUTF8(lsv))
Perl_magic_setsubstr(pTHX_ SV *sv, MAGIC *mg)
{
STRLEN len;
- char *tmps = SvPV(sv, len);
- SV *lsv = LvTARG(sv);
+ const char *tmps = SvPV_const(sv, len);
+ SV * const lsv = LvTARG(sv);
I32 lvoff = LvTARGOFF(sv);
I32 lvlen = LvTARGLEN(sv);
+ PERL_UNUSED_ARG(mg);
if (DO_UTF8(sv)) {
sv_utf8_upgrade(lsv);
sv_pos_u2b(lsv, &lvoff, &lvlen);
sv_insert(lsv, lvoff, lvlen, tmps, len);
+ LvTARGLEN(sv) = sv_len_utf8(sv);
SvUTF8_on(lsv);
}
else if (lsv && SvUTF8(lsv)) {
sv_pos_u2b(lsv, &lvoff, &lvlen);
+ LvTARGLEN(sv) = len;
tmps = (char*)bytes_to_utf8((U8*)tmps, &len);
sv_insert(lsv, lvoff, lvlen, tmps, len);
Safefree(tmps);
}
- else
- sv_insert(lsv, lvoff, lvlen, tmps, len);
+ else {
+ sv_insert(lsv, lvoff, lvlen, tmps, len);
+ LvTARGLEN(sv) = len;
+ }
+
return 0;
}
int
Perl_magic_gettaint(pTHX_ SV *sv, MAGIC *mg)
{
- TAINT_IF((mg->mg_len & 1) ||
- ((mg->mg_len & 2) && mg->mg_obj == sv)); /* kludge */
+ PERL_UNUSED_ARG(sv);
+ TAINT_IF((PL_localizing != 1) && (mg->mg_len & 1));
return 0;
}
int
Perl_magic_settaint(pTHX_ SV *sv, MAGIC *mg)
{
- if (PL_localizing) {
- if (PL_localizing == 1)
- mg->mg_len <<= 1;
+ PERL_UNUSED_ARG(sv);
+ /* update taint status unless we're restoring at scope exit */
+ if (PL_localizing != 2) {
+ if (PL_tainted)
+ mg->mg_len |= 1;
else
- mg->mg_len >>= 1;
+ mg->mg_len &= ~1;
}
- else if (PL_tainted)
- mg->mg_len |= 1;
- else
- mg->mg_len &= ~1;
return 0;
}
int
Perl_magic_getvec(pTHX_ SV *sv, MAGIC *mg)
{
- SV *lsv = LvTARG(sv);
+ SV * const lsv = LvTARG(sv);
+ PERL_UNUSED_ARG(mg);
if (!lsv) {
- (void)SvOK_off(sv);
+ SvOK_off(sv);
return 0;
}
int
Perl_magic_setvec(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
do_vecset(sv); /* XXX slurp this routine */
return 0;
}
SV *targ = Nullsv;
if (LvTARGLEN(sv)) {
if (mg->mg_obj) {
- SV *ahv = LvTARG(sv);
- if (SvTYPE(ahv) == SVt_PVHV) {
- HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
- if (he)
- targ = HeVAL(he);
- }
- else {
- SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
- if (svp)
- targ = *svp;
- }
+ SV * const ahv = LvTARG(sv);
+ HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
+ if (he)
+ targ = HeVAL(he);
}
else {
- AV* av = (AV*)LvTARG(sv);
+ AV* const av = (AV*)LvTARG(sv);
if ((I32)LvTARGOFF(sv) <= AvFILL(av))
targ = AvARRAY(av)[LvTARGOFF(sv)];
}
int
Perl_magic_setdefelem(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
if (LvTARGLEN(sv))
vivify_defelem(sv);
if (LvTARG(sv)) {
if (!LvTARGLEN(sv) || !(mg = mg_find(sv, PERL_MAGIC_defelem)))
return;
if (mg->mg_obj) {
- SV *ahv = LvTARG(sv);
- STRLEN n_a;
- if (SvTYPE(ahv) == SVt_PVHV) {
- HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
- if (he)
- value = HeVAL(he);
- }
- else {
- SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
- if (svp)
- value = *svp;
- }
+ SV * const ahv = LvTARG(sv);
+ HE * const he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
+ if (he)
+ value = HeVAL(he);
if (!value || value == &PL_sv_undef)
- Perl_croak(aTHX_ PL_no_helem, SvPV(mg->mg_obj, n_a));
+ Perl_croak(aTHX_ PL_no_helem_sv, mg->mg_obj);
}
else {
- AV* av = (AV*)LvTARG(sv);
+ AV* const av = (AV*)LvTARG(sv);
if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
LvTARG(sv) = Nullsv; /* array can't be extended */
else {
- SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
+ SV** const svp = av_fetch(av, LvTARGOFF(sv), TRUE);
if (!svp || (value = *svp) == &PL_sv_undef)
Perl_croak(aTHX_ PL_no_aelem, (I32)LvTARGOFF(sv));
}
int
Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
{
- AV *av = (AV*)mg->mg_obj;
+ AV *const av = (AV*)mg->mg_obj;
SV **svp = AvARRAY(av);
- I32 i = AvFILLp(av);
- while (i >= 0) {
- if (svp[i] && svp[i] != &PL_sv_undef) {
- if (!SvWEAKREF(svp[i]))
- Perl_croak(aTHX_ "panic: magic_killbackrefs");
- /* XXX Should we check that it hasn't changed? */
- SvRV(svp[i]) = 0;
- (void)SvOK_off(svp[i]);
- SvWEAKREF_off(svp[i]);
- svp[i] = &PL_sv_undef;
- }
- i--;
+ PERL_UNUSED_ARG(sv);
+
+ if (svp) {
+ SV *const *const last = svp + AvFILLp(av);
+
+ while (svp <= last) {
+ if (*svp) {
+ SV *const referrer = *svp;
+ if (SvWEAKREF(referrer)) {
+ /* XXX Should we check that it hasn't changed? */
+ SvRV_set(referrer, 0);
+ SvOK_off(referrer);
+ SvWEAKREF_off(referrer);
+ } else if (SvTYPE(referrer) == SVt_PVGV ||
+ SvTYPE(referrer) == SVt_PVLV) {
+ /* You lookin' at me? */
+ assert(GvSTASH(referrer));
+ assert(GvSTASH(referrer) == (HV*)sv);
+ GvSTASH(referrer) = 0;
+ } else {
+ Perl_croak(aTHX_
+ "panic: magic_killbackrefs (flags=%"UVxf")",
+ (UV)SvFLAGS(referrer));
+ }
+
+ *svp = Nullsv;
+ }
+ svp++;
+ }
}
+ SvREFCNT_dec(av); /* remove extra count added by sv_add_backref() */
return 0;
}
int
Perl_magic_setbm(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
sv_unmagic(sv, PERL_MAGIC_bm);
SvVALID_off(sv);
return 0;
int
Perl_magic_setfm(pTHX_ SV *sv, MAGIC *mg)
{
+ PERL_UNUSED_ARG(mg);
sv_unmagic(sv, PERL_MAGIC_fm);
SvCOMPILED_off(sv);
return 0;
int
Perl_magic_setuvar(pTHX_ SV *sv, MAGIC *mg)
{
- struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
+ const struct ufuncs * const uf = (struct ufuncs *)mg->mg_ptr;
if (uf && uf->uf_set)
(*uf->uf_set)(aTHX_ uf->uf_index, sv);
}
int
+Perl_magic_setregexp(pTHX_ SV *sv, MAGIC *mg)
+{
+ PERL_UNUSED_ARG(mg);
+ sv_unmagic(sv, PERL_MAGIC_qr);
+ return 0;
+}
+
+int
Perl_magic_freeregexp(pTHX_ SV *sv, MAGIC *mg)
{
- regexp *re = (regexp *)mg->mg_obj;
+ regexp * const re = (regexp *)mg->mg_obj;
+ PERL_UNUSED_ARG(sv);
+
ReREFCNT_dec(re);
return 0;
}
* RenE<eacute> Descartes said "I think not."
* and vanished with a faint plop.
*/
+ PERL_UNUSED_ARG(sv);
if (mg->mg_ptr) {
Safefree(mg->mg_ptr);
mg->mg_ptr = NULL;
}
#endif /* USE_LOCALE_COLLATE */
+/* Just clear the UTF-8 cache data. */
+int
+Perl_magic_setutf8(pTHX_ SV *sv, MAGIC *mg)
+{
+ PERL_UNUSED_ARG(sv);
+ Safefree(mg->mg_ptr); /* The mg_ptr holds the pos cache. */
+ mg->mg_ptr = 0;
+ mg->mg_len = -1; /* The mg_len holds the len cache. */
+ return 0;
+}
+
int
Perl_magic_set(pTHX_ SV *sv, MAGIC *mg)
{
- register char *s;
+ register const char *s;
I32 i;
STRLEN len;
switch (*mg->mg_ptr) {
sv_setsv(PL_bodytarget, sv);
break;
case '\003': /* ^C */
- PL_minus_c = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ PL_minus_c = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '\004': /* ^D */
- PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG;
+#ifdef DEBUGGING
+ s = SvPV_nolen_const(sv);
+ PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG;
DEBUG_x(dump_all());
+#else
+ PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | DEBUG_TOP_FLAG;
+#endif
break;
case '\005': /* ^E */
+ if (*(mg->mg_ptr+1) == '\0') {
#ifdef MACOS_TRADITIONAL
- gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+ gMacPerl_OSErr = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
#else
# ifdef VMS
- set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
# else
# ifdef WIN32
- SetLastError( SvIV(sv) );
+ SetLastError( SvIV(sv) );
# else
# ifdef OS2
- os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ os2_setsyserrno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
# else
- /* will anyone ever use this? */
- SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
+ /* will anyone ever use this? */
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
# endif
# endif
# endif
#endif
+ }
+ else if (strEQ(mg->mg_ptr+1, "NCODING")) {
+ if (PL_encoding)
+ SvREFCNT_dec(PL_encoding);
+ if (SvOK(sv) || SvGMAGICAL(sv)) {
+ PL_encoding = newSVsv(sv);
+ }
+ else {
+ PL_encoding = Nullsv;
+ }
+ }
break;
case '\006': /* ^F */
PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
break;
case '\011': /* ^I */ /* NOT \t in EBCDIC */
- if (PL_inplace)
- Safefree(PL_inplace);
- if (SvOK(sv))
- PL_inplace = savepv(SvPV(sv,len));
- else
- PL_inplace = Nullch;
+ Safefree(PL_inplace);
+ PL_inplace = SvOK(sv) ? savesvpv(sv) : Nullch;
break;
case '\017': /* ^O */
if (*(mg->mg_ptr+1) == '\0') {
- if (PL_osname)
- Safefree(PL_osname);
- if (SvOK(sv))
- PL_osname = savepv(SvPV(sv,len));
- else
- PL_osname = Nullch;
+ Safefree(PL_osname);
+ PL_osname = Nullch;
+ if (SvOK(sv)) {
+ TAINT_PROPER("assigning to $^O");
+ PL_osname = savesvpv(sv);
+ }
}
else if (strEQ(mg->mg_ptr, "\017PEN")) {
if (!PL_compiling.cop_io)
PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
#endif
break;
- case '\027': /* ^W & $^WARNING_BITS & ^WIDE_SYSTEM_CALLS */
+ case '\027': /* ^W & $^WARNING_BITS */
if (*(mg->mg_ptr+1) == '\0') {
if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
| (i ? G_WARN_ON : G_WARN_OFF) ;
}
}
- else if (strEQ(mg->mg_ptr, "\027ARNING_BITS")) {
+ else if (strEQ(mg->mg_ptr+1, "ARNING_BITS")) {
if ( ! (PL_dowarn & G_WARN_ALL_MASK)) {
if (!SvPOK(sv) && PL_localizing) {
sv_setpvn(sv, WARN_NONEstring, WARNsize);
STRLEN len, i;
int accumulate = 0 ;
int any_fatals = 0 ;
- char * ptr = (char*)SvPV(sv, len) ;
+ const char * const ptr = SvPV_const(sv, len) ;
for (i = 0 ; i < len ; ++i) {
accumulate |= ptr[i] ;
any_fatals |= (ptr[i] & 0xAA) ;
else if (isWARN_on(sv, WARN_ALL) && !any_fatals) {
PL_compiling.cop_warnings = pWARN_ALL;
PL_dowarn |= G_WARN_ONCE ;
- }
+ }
else {
if (specialWARN(PL_compiling.cop_warnings))
PL_compiling.cop_warnings = newSVsv(sv) ;
}
}
}
- else if (strEQ(mg->mg_ptr, "\027IDE_SYSTEM_CALLS"))
- PL_widesyscalls = SvTRUE(sv);
break;
case '.':
if (PL_localizing) {
SAVESPTR(PL_last_in_gv);
}
else if (SvOK(sv) && GvIO(PL_last_in_gv))
- IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
+ IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv);
break;
case '^':
Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
- IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
- IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
+ s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
+ IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO);
break;
case '~':
Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
- IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,len));
- IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
+ s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
+ IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv,TRUE, SVt_PVIO);
break;
case '=':
- IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '-':
- IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
break;
case '%':
- IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ IoPAGE(GvIOp(PL_defoutgv)) = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '|':
{
- IO *io = GvIOp(PL_defoutgv);
+ IO * const io = GvIOp(PL_defoutgv);
if(!io)
break;
if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
}
}
break;
- case '*':
- i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
- PL_multiline = (i != 0);
- break;
case '/':
SvREFCNT_dec(PL_rs);
PL_rs = newSVsv(sv);
PL_ofs_sv = Nullsv;
}
break;
- case '#':
- if (PL_ofmt)
- Safefree(PL_ofmt);
- PL_ofmt = savepv(SvPV(sv,len));
- break;
case '[':
PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
break;
STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
else
#endif
- STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+ STATUS_UNIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '!':
- /* Don't be merge these two SETERRNO calls because
- * the idea is to make non-VMS places not to see
- * the dollar in the identifier: that is non-ANSI. */
+ {
#ifdef VMS
- SETERRNO(0, (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
+# define PERL_VMS_BANG vaxc$errno
#else
- SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, 0);
+# define PERL_VMS_BANG 0
#endif
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
+ (SvIV(sv) == EVMSERR) ? 4 : PERL_VMS_BANG);
+ }
break;
case '<':
PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
#ifdef HAS_SETRESUID
(void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
#else
- if (PL_uid == PL_euid) /* special case $< = $> */
+ if (PL_uid == PL_euid) { /* special case $< = $> */
+#ifdef PERL_DARWIN
+ /* workaround for Darwin's setuid peculiarity, cf [perl #24122] */
+ if (PL_uid != 0 && PerlProc_getuid() == 0)
+ (void)PerlProc_setuid(0);
+#endif
(void)PerlProc_setuid(PL_uid);
- else {
+ } else {
PL_uid = PerlProc_getuid();
Perl_croak(aTHX_ "setruid() not implemented");
}
case ')':
#ifdef HAS_SETGROUPS
{
- char *p = SvPV(sv, len);
+ const char *p = SvPV_const(sv, len);
Groups_t gary[NGROUPS];
while (isSPACE(*p))
break;
#ifndef MACOS_TRADITIONAL
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. */
{
- s = SvPV(sv, len);
+ s = SvPV_const(sv, len);
# if __FreeBSD_version > 410001
/* The leading "-" removes the "perl: " prefix,
* but not the "(perl) suffix from the ps(1)
# endif
}
#endif
- if (!PL_origalen) {
- s = PL_origargv[0];
- s += strlen(s);
- /* See if all the arguments are contiguous in memory */
- for (i = 1; i < PL_origargc; i++) {
- if (PL_origargv[i] == s + 1
-#ifdef OS2
- || PL_origargv[i] == s + 2
-#endif
- )
- {
- ++s;
- s += strlen(s); /* this one is ok too */
- }
- else
- break;
- }
- /* can grab env area too? */
- if (PL_origenviron && (PL_origenviron[0] == s + 1)) {
- my_setenv("NoNe SuCh", Nullch);
- /* force copy of environment */
- for (i = 0; PL_origenviron[i]; i++)
- if (PL_origenviron[i] == s + 1) {
- ++s;
- s += strlen(s);
- }
- else
- break;
- }
- PL_origalen = s - PL_origargv[0];
+#if defined(__hpux) && defined(PSTAT_SETCMD)
+ {
+ union pstun un;
+ s = SvPV_const(sv, len);
+ un.pst_command = (char *)s;
+ pstat(PSTAT_SETCMD, un, len, 0, 0);
}
+#endif
+ /* PL_origalen is set in perl_parse(). */
s = SvPV_force(sv,len);
- i = len;
- if (i >= PL_origalen) {
- i = PL_origalen;
- /* don't allow system to limit $0 seen by script */
- /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
- Copy(s, PL_origargv[0], i, char);
- s = PL_origargv[0]+i;
- *s = '\0';
+ 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 {
- Copy(s, PL_origargv[0], i, char);
- s = PL_origargv[0]+i;
- *s++ = '\0';
- while (++i < PL_origalen)
- *s++ = ' ';
- s = PL_origargv[0]+i;
- for (i = 1; i < PL_origargc; i++)
- PL_origargv[i] = Nullch;
- }
+ /* Shorter than original, will be padded. */
+ Copy(s, PL_origargv[0], len, char);
+ PL_origargv[0][len] = 0;
+ memset(PL_origargv[0] + len + 1,
+ /* Is the space counterintuitive? Yes.
+ * (You were expecting \0?)
+ * Does it work? Seems to. (In Linux 2.4.20 at least.)
+ * --jhi */
+ (int)' ',
+ PL_origalen - len - 1);
+ }
+ PL_origargv[0][PL_origalen-1] = 0;
+ for (i = 1; i < PL_origargc; i++)
+ PL_origargv[i] = 0;
+ UNLOCK_DOLLARZERO_MUTEX;
break;
#endif
-#ifdef USE_5005THREADS
- case '@':
- sv_setsv(thr->errsv, sv);
- break;
-#endif /* USE_5005THREADS */
}
return 0;
}
-#ifdef USE_5005THREADS
-int
-Perl_magic_mutexfree(pTHX_ SV *sv, MAGIC *mg)
-{
- DEBUG_S(PerlIO_printf(Perl_debug_log,
- "0x%"UVxf": magic_mutexfree 0x%"UVxf"\n",
- PTR2UV(thr), PTR2UV(sv)));
- if (MgOWNER(mg))
- Perl_croak(aTHX_ "panic: magic_mutexfree");
- MUTEX_DESTROY(MgMUTEXP(mg));
- COND_DESTROY(MgCONDP(mg));
- return 0;
-}
-#endif /* USE_5005THREADS */
-
I32
-Perl_whichsig(pTHX_ char *sig)
+Perl_whichsig(pTHX_ const char *sig)
{
- register char **sigv;
+ register char* const* sigv;
- for (sigv = PL_sig_name+1; *sigv; sigv++)
+ for (sigv = (char* const*)PL_sig_name; *sigv; sigv++)
if (strEQ(sig,*sigv))
- return PL_sig_num[sigv - PL_sig_name];
+ return PL_sig_num[sigv - (char* const*)PL_sig_name];
#ifdef SIGCLD
if (strEQ(sig,"CHLD"))
return SIGCLD;
if (strEQ(sig,"CLD"))
return SIGCHLD;
#endif
- return 0;
+ return -1;
}
-static SV* sig_sv;
-
Signal_t
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+Perl_sighandler(int sig, ...)
+#else
Perl_sighandler(int sig)
+#endif
{
-#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
- dTHXa(PL_curinterp); /* fake TLS, because signals don't do TLS */
+#ifdef PERL_GET_SIG_CONTEXT
+ dTHXa(PERL_GET_SIG_CONTEXT);
#else
dTHX;
#endif
dSP;
GV *gv = Nullgv;
- HV *st;
- SV *sv = Nullsv, *tSv = PL_Sv;
+ SV *sv = Nullsv;
+ SV * const tSv = PL_Sv;
CV *cv = Nullcv;
OP *myop = PL_op;
U32 flags = 0;
- XPV *tXpv = PL_Xpv;
-
-#if defined(WIN32) && defined(PERL_IMPLICIT_CONTEXT)
- PERL_SET_THX(aTHX); /* fake TLS, see above */
-#endif
+ XPV * const tXpv = PL_Xpv;
if (PL_savestack_ix + 15 <= PL_savestack_max)
flags |= 1;
if (PL_markstack_ptr < PL_markstack_max - 2)
flags |= 4;
- if (PL_retstack_ix < PL_retstack_max - 2)
- flags |= 8;
if (PL_scopestack_ix < PL_scopestack_max - 3)
flags |= 16;
- if (!PL_psig_ptr[sig])
- Perl_die(aTHX_ "Signal SIG%s received, but no signal handler set.\n",
- PL_sig_name[sig]);
+ if (!PL_psig_ptr[sig]) {
+ PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n",
+ PL_sig_name[sig]);
+ exit(sig);
+ }
/* Max number of items pushed there is 3*n or 4. We cannot fix
infinity, so we fix 4 (in fact 5): */
if (flags & 1) {
PL_savestack_ix += 5; /* Protect save in progress. */
- SAVEDESTRUCTOR_X(unwind_handler_stack, (void*)&flags);
+ SAVEDESTRUCTOR_X(S_unwind_handler_stack, (void*)&flags);
}
if (flags & 4)
PL_markstack_ptr++; /* Protect mark. */
- if (flags & 8) {
- PL_retstack_ix++;
- PL_retstack[PL_retstack_ix] = NULL;
- }
if (flags & 16)
PL_scopestack_ix += 1;
/* sv_2cv is too complicated, try a simpler variant first: */
if (!SvROK(PL_psig_ptr[sig]) || !(cv = (CV*)SvRV(PL_psig_ptr[sig]))
- || SvTYPE(cv) != SVt_PVCV)
+ || SvTYPE(cv) != SVt_PVCV) {
+ HV *st;
cv = sv_2cv(PL_psig_ptr[sig],&st,&gv,TRUE);
+ }
if (!cv || !CvROOT(cv)) {
if (ckWARN(WARN_SIGNAL))
- Perl_warner(aTHX_ WARN_SIGNAL, "SIG%s handler \"%s\" not defined.\n",
+ Perl_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))
if(PL_psig_name[sig]) {
sv = SvREFCNT_inc(PL_psig_name[sig]);
flags |= 64;
- sig_sv = sv;
+#if !defined(PERL_IMPLICIT_CONTEXT)
+ PL_sig_sv = sv;
+#endif
} else {
sv = sv_newmortal();
sv_setpv(sv,PL_sig_name[sig]);
PUSHSTACKi(PERLSI_SIGNAL);
PUSHMARK(SP);
PUSHs(sv);
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+ {
+ struct sigaction oact;
+
+ if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) {
+ siginfo_t *sip;
+ va_list args;
+
+ va_start(args, sig);
+ sip = (siginfo_t*)va_arg(args, siginfo_t*);
+ if (sip) {
+ HV *sih = newHV();
+ SV *rv = newRV_noinc((SV*)sih);
+ /* The siginfo fields signo, code, errno, pid, uid,
+ * addr, status, and band are defined by POSIX/SUSv3. */
+ hv_store(sih, "signo", 5, newSViv(sip->si_signo), 0);
+ hv_store(sih, "code", 4, newSViv(sip->si_code), 0);
+#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_store(sih, "errno", 5, newSViv(sip->si_errno), 0);
+ hv_store(sih, "status", 6, newSViv(sip->si_status), 0);
+ hv_store(sih, "uid", 3, newSViv(sip->si_uid), 0);
+ hv_store(sih, "pid", 3, newSViv(sip->si_pid), 0);
+ hv_store(sih, "addr", 4, newSVuv(PTR2UV(sip->si_addr)), 0);
+ hv_store(sih, "band", 4, newSViv(sip->si_band), 0);
+#endif
+ EXTEND(SP, 2);
+ PUSHs((SV*)rv);
+ PUSHs(newSVpv((void*)sip, sizeof(*sip)));
+ }
+ }
+ }
+#endif
PUTBACK;
call_sv((SV*)cv, G_DISCARD|G_EVAL);
#else
/* Not clear if this will work */
(void)rsignal(sig, SIG_IGN);
- (void)rsignal(sig, &Perl_csighandler);
+ (void)rsignal(sig, PL_csighandlerp);
#endif
#endif /* !PERL_MICRO */
- Perl_die(aTHX_ Nullformat);
+ Perl_die(aTHX_ Nullch);
}
cleanup:
if (flags & 1)
PL_savestack_ix -= 8; /* Unprotect save in progress. */
if (flags & 4)
PL_markstack_ptr--;
- if (flags & 8)
- PL_retstack_ix--;
if (flags & 16)
PL_scopestack_ix -= 1;
if (flags & 64)
static void
-restore_magic(pTHX_ void *p)
+S_restore_magic(pTHX_ const void *p)
{
- MGS* mgs = SSPTR(PTR2IV(p), MGS*);
- SV* sv = mgs->mgs_sv;
+ MGS* const mgs = SSPTR(PTR2IV(p), MGS*);
+ SV* const sv = mgs->mgs_sv;
if (!sv)
return;
if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
{
+#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(sv);
+#endif
+
if (mgs->mgs_flags)
SvFLAGS(sv) |= mgs->mgs_flags;
else
mg_magical(sv);
- if (SvGMAGICAL(sv))
- SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
+ if (SvGMAGICAL(sv)) {
+ /* downgrade public flags to private,
+ and discard any other private flags */
+
+ U32 public = SvFLAGS(sv) & (SVf_IOK|SVf_NOK|SVf_POK);
+ if (public) {
+ SvFLAGS(sv) &= ~( public | SVp_IOK|SVp_NOK|SVp_POK );
+ SvFLAGS(sv) |= ( public << PRIVSHIFT );
+ }
+ }
}
mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
}
static void
-unwind_handler_stack(pTHX_ void *p)
+S_unwind_handler_stack(pTHX_ const void *p)
{
- U32 flags = *(U32*)p;
+ dVAR;
+ const U32 flags = *(const U32*)p;
if (flags & 1)
PL_savestack_ix -= 5; /* Unprotect save in progress. */
/* cxstack_ix-- Not needed, die already unwound it. */
+#if !defined(PERL_IMPLICIT_CONTEXT)
if (flags & 64)
- SvREFCNT_dec(sig_sv);
+ SvREFCNT_dec(PL_sig_sv);
+#endif
}
+
+/*
+ * Local variables:
+ * c-indentation-style: bsd
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ *
+ * ex: set ts=8 sts=4 sw=4 noet:
+ */
projects / p5sagit/p5-mst-13.2.git / blobdiff