# include <sys/pstat.h>
#endif
+#ifdef HAS_PRCTL_SET_NAME
+# include <sys/prctl.h>
+#endif
+
#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
Signal_t Perl_csighandler(int sig, siginfo_t *, void *);
#else
struct magic_state {
SV* mgs_sv;
- U32 mgs_flags;
I32 mgs_ss_ix;
+ U32 mgs_magical;
+ bool mgs_readonly;
+ bool mgs_bumped;
};
/* MGS is typedef'ed to struct magic_state in perl.h */
{
dVAR;
MGS* mgs;
+ bool bumped = FALSE;
PERL_ARGS_ASSERT_SAVE_MAGIC;
+ /* we shouldn't really be called here with RC==0, but it can sometimes
+ * happen via mg_clear() (which also shouldn't be called when RC==0,
+ * but it can happen). Handle this case gracefully(ish) by not RC++
+ * and thus avoiding the resultant double free */
+ if (SvREFCNT(sv) > 0) {
+ /* guard against sv getting freed midway through the mg clearing,
+ * by holding a private reference for the duration. */
+ SvREFCNT_inc_simple_void_NN(sv);
+ bumped = TRUE;
+ }
+
assert(SvMAGICAL(sv));
/* Turning READONLY off for a copy-on-write scalar (including shared
hash keys) is a bad idea. */
mgs = SSPTR(mgs_ix, MGS*);
mgs->mgs_sv = sv;
- mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
+ mgs->mgs_magical = SvMAGICAL(sv);
+ mgs->mgs_readonly = SvREADONLY(sv) != 0;
mgs->mgs_ss_ix = PL_savestack_ix; /* points after the saved destructor */
+ mgs->mgs_bumped = bumped;
SvMAGICAL_off(sv);
SvREADONLY_off(sv);
const MAGIC* mg;
PERL_ARGS_ASSERT_MG_MAGICAL;
PERL_UNUSED_CONTEXT;
+
+ SvMAGICAL_off(sv);
if ((mg = SvMAGIC(sv))) {
- SvRMAGICAL_off(sv);
do {
const MGVTBL* const vtbl = mg->mg_virtual;
if (vtbl) {
case PERL_MAGIC_arylen_p:
case PERL_MAGIC_rhash:
case PERL_MAGIC_symtab:
+ case PERL_MAGIC_tied: /* treat as value, so 'local @tied' isn't tied */
+ case PERL_MAGIC_checkcall:
return 0;
default:
return 1;
{
dVAR;
const I32 mgs_ix = SSNEW(sizeof(MGS));
- const bool was_temp = (bool)SvTEMP(sv);
- int have_new = 0;
+ bool have_new = 0;
MAGIC *newmg, *head, *cur, *mg;
- /* guard against sv having being freed midway by holding a private
- reference. */
PERL_ARGS_ASSERT_MG_GET;
- /* 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_simple_NN(sv));
- if (!was_temp) {
- SvTEMP_off(sv);
- }
-
save_magic(mgs_ix, sv);
/* We must call svt_get(sv, mg) for each valid entry in the linked
newmg = cur = head = mg = SvMAGIC(sv);
while (mg) {
const MGVTBL * const vtbl = mg->mg_virtual;
+ MAGIC * const nextmg = mg->mg_moremagic; /* it may delete itself */
if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) {
- CALL_FPTR(vtbl->svt_get)(aTHX_ sv, mg);
+ vtbl->svt_get(aTHX_ sv, mg);
/* guard against magic having been deleted - eg FETCH calling
* untie */
- if (!SvMAGIC(sv))
+ if (!SvMAGIC(sv)) {
+ (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */
break;
+ }
- /* Don't restore the flags for this entry if it was deleted. */
+ /* recalculate flags if this entry was deleted. */
if (mg->mg_flags & MGf_GSKIP)
- (SSPTR(mgs_ix, MGS *))->mgs_flags = 0;
+ (SSPTR(mgs_ix, MGS *))->mgs_magical = 0;
}
- mg = mg->mg_moremagic;
+ mg = nextmg;
if (have_new) {
/* Have we finished with the new entries we saw? Start again
have_new = 1;
cur = mg;
mg = newmg;
+ (SSPTR(mgs_ix, MGS *))->mgs_magical = 0; /* recalculate flags */
}
}
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;
}
nextmg = mg->mg_moremagic; /* it may delete itself */
if (mg->mg_flags & MGf_GSKIP) {
mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
- (SSPTR(mgs_ix, MGS*))->mgs_flags = 0;
+ (SSPTR(mgs_ix, MGS*))->mgs_magical = 0;
}
- if (PL_localizing == 2 && !S_is_container_magic(mg))
+ if (PL_localizing == 2 && (!S_is_container_magic(mg) || sv == DEFSV))
continue;
if (vtbl && vtbl->svt_set)
- CALL_FPTR(vtbl->svt_set)(aTHX_ sv, mg);
+ vtbl->svt_set(aTHX_ sv, mg);
}
restore_magic(INT2PTR(void*, (IV)mgs_ix));
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);
+ len = vtbl->svt_len(aTHX_ sv, mg);
restore_magic(INT2PTR(void*, (IV)mgs_ix));
return len;
}
I32 len;
save_magic(mgs_ix, sv);
/* omit MGf_GSKIP -- not changed here */
- len = CALL_FPTR(vtbl->svt_len)(aTHX_ sv, mg);
+ len = vtbl->svt_len(aTHX_ sv, mg);
restore_magic(INT2PTR(void*, (IV)mgs_ix));
return len;
}
{
const I32 mgs_ix = SSNEW(sizeof(MGS));
MAGIC* mg;
+ MAGIC *nextmg;
PERL_ARGS_ASSERT_MG_CLEAR;
save_magic(mgs_ix, sv);
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ for (mg = SvMAGIC(sv); mg; mg = nextmg) {
const MGVTBL* const vtbl = mg->mg_virtual;
/* omit GSKIP -- never set here */
+ nextmg = mg->mg_moremagic; /* it may delete itself */
+
if (vtbl && vtbl->svt_clear)
- CALL_FPTR(vtbl->svt_clear)(aTHX_ sv, mg);
+ vtbl->svt_clear(aTHX_ sv, mg);
}
restore_magic(INT2PTR(void*, (IV)mgs_ix));
return 0;
}
+static MAGIC*
+S_mg_findext_flags(pTHX_ const SV *sv, int type, const MGVTBL *vtbl, U32 flags)
+{
+ PERL_UNUSED_CONTEXT;
+
+ assert(flags <= 1);
+
+ if (sv) {
+ MAGIC *mg;
+
+ for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
+ if (mg->mg_type == type && (!flags || mg->mg_virtual == vtbl)) {
+ return mg;
+ }
+ }
+ }
+
+ return NULL;
+}
+
/*
=for apidoc mg_find
MAGIC*
Perl_mg_find(pTHX_ const SV *sv, int type)
{
- PERL_UNUSED_CONTEXT;
- if (sv) {
- MAGIC *mg;
- for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
- if (mg->mg_type == type)
- return mg;
- }
- }
- return NULL;
+ return S_mg_findext_flags(aTHX_ sv, type, NULL, 0);
+}
+
+/*
+=for apidoc mg_findext
+
+Finds the magic pointer of C<type> with the given C<vtbl> for the C<SV>. See
+C<sv_magicext>.
+
+=cut
+*/
+
+MAGIC*
+Perl_mg_findext(pTHX_ const SV *sv, int type, const MGVTBL *vtbl)
+{
+ return S_mg_findext_flags(aTHX_ sv, type, vtbl, 1);
}
/*
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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);
+ count += vtbl->svt_copy(aTHX_ sv, mg, nsv, key, klen);
}
else {
const char type = mg->mg_type;
PERL_ARGS_ASSERT_MG_LOCALIZE;
+ if (nsv == DEFSV)
+ return;
+
for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
const MGVTBL* const vtbl = mg->mg_virtual;
if (!S_is_container_magic(mg))
continue;
if ((mg->mg_flags & MGf_LOCAL) && vtbl->svt_local)
- (void)CALL_FPTR(vtbl->svt_local)(aTHX_ nsv, mg);
+ (void)vtbl->svt_local(aTHX_ nsv, mg);
else
sv_magicext(nsv, mg->mg_obj, mg->mg_type, vtbl,
mg->mg_ptr, mg->mg_len);
}
}
+#define mg_free_struct(sv, mg) S_mg_free_struct(aTHX_ sv, mg)
+static void
+S_mg_free_struct(pTHX_ SV *sv, MAGIC *mg)
+{
+ const MGVTBL* const vtbl = mg->mg_virtual;
+ if (vtbl && vtbl->svt_free)
+ vtbl->svt_free(aTHX_ sv, mg);
+ if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global) {
+ if (mg->mg_len > 0 || mg->mg_type == PERL_MAGIC_utf8)
+ Safefree(mg->mg_ptr);
+ else if (mg->mg_len == HEf_SVKEY)
+ SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr));
+ }
+ if (mg->mg_flags & MGf_REFCOUNTED)
+ SvREFCNT_dec(mg->mg_obj);
+ Safefree(mg);
+}
+
/*
=for apidoc mg_free
PERL_ARGS_ASSERT_MG_FREE;
for (mg = SvMAGIC(sv); mg; mg = moremagic) {
- 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 || mg->mg_type == PERL_MAGIC_utf8)
- Safefree(mg->mg_ptr);
- else if (mg->mg_len == HEf_SVKEY)
- SvREFCNT_dec(MUTABLE_SV(mg->mg_ptr));
- }
- if (mg->mg_flags & MGf_REFCOUNTED)
- SvREFCNT_dec(mg->mg_obj);
- Safefree(mg);
+ mg_free_struct(sv, mg);
SvMAGIC_set(sv, moremagic);
}
SvMAGIC_set(sv, NULL);
return 0;
}
+/*
+=for apidoc Am|void|mg_free_type|SV *sv|int how
+
+Remove any magic of type I<how> from the SV I<sv>. See L</sv_magic>.
+
+=cut
+*/
+
+void
+Perl_mg_free_type(pTHX_ SV *sv, int how)
+{
+ 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) {
+ /* 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);
+}
+
#include <signal.h>
U32
PERL_ARGS_ASSERT_MAGIC_REGDATUM_SET;
PERL_UNUSED_ARG(sv);
PERL_UNUSED_ARG(mg);
- Perl_croak(aTHX_ "%s", PL_no_modify);
+ Perl_croak_no_modify(aTHX);
NORETURN_FUNCTION_END;
}
sv_setpvs(sv, "");
SvUTF8_off(sv);
if ((CopHINTS_get(c) & HINT_LEXICAL_IO_IN)) {
- SV *const value = Perl_refcounted_he_fetch(aTHX_
- c->cop_hints_hash,
- 0, "open<", 5, 0, 0);
+ SV *const value = cop_hints_fetch_pvs(c, "open<", 0);
assert(value);
sv_catsv(sv, value);
}
sv_catpvs(sv, "\0");
if ((CopHINTS_get(c) & HINT_LEXICAL_IO_OUT)) {
- SV *const value = Perl_refcounted_he_fetch(aTHX_
- c->cop_hints_hash,
- 0, "open>", 5, 0, 0);
+ SV *const value = cop_hints_fetch_pvs(c, "open>", 0);
assert(value);
sv_catsv(sv, value);
}
{
dVAR;
register I32 paren;
- register char *s = NULL;
+ register const char *s = NULL;
register REGEXP *rx;
const char * const remaining = mg->mg_ptr + 1;
const char nextchar = *remaining;
switch (*mg->mg_ptr) {
case '\001': /* ^A */
sv_setsv(sv, PL_bodytarget);
+ if (SvTAINTED(PL_bodytarget))
+ SvTAINTED_on(sv);
break;
case '\003': /* ^C, ^CHILD_ERROR_NATIVE */
if (nextchar == '\0') {
case '\006': /* ^F */
sv_setiv(sv, (IV)PL_maxsysfd);
break;
+ case '\007': /* ^GLOBAL_PHASE */
+ if (strEQ(remaining, "LOBAL_PHASE")) {
+ sv_setpvn(sv, PL_phase_names[PL_phase],
+ strlen(PL_phase_names[PL_phase]));
+ }
+ break;
case '\010': /* ^H */
sv_setiv(sv, (IV)PL_hints);
break;
Perl_emulate_cop_io(aTHX_ &PL_compiling, sv);
}
break;
- case '\020':
+ case '\020':
if (nextchar == '\0') { /* ^P */
sv_setiv(sv, (IV)PL_perldb);
} else if (strEQ(remaining, "REMATCH")) { /* $^PREMATCH */
{
sv_setiv(sv, (IV)STATUS_CURRENT);
#ifdef COMPLEX_STATUS
+ SvUPGRADE(sv, SVt_PVLV);
LvTARGOFF(sv) = PL_statusvalue;
LvTARGLEN(sv) = PL_statusvalue_vms;
#endif
}
break;
case '^':
- if (GvIOp(PL_defoutgv))
- s = IoTOP_NAME(GvIOp(PL_defoutgv));
+ if (!isGV_with_GP(PL_defoutgv))
+ s = "";
+ else if (GvIOp(PL_defoutgv))
+ s = IoTOP_NAME(GvIOp(PL_defoutgv));
if (s)
sv_setpv(sv,s);
else {
}
break;
case '~':
- if (GvIOp(PL_defoutgv))
+ if (!isGV_with_GP(PL_defoutgv))
+ s = "";
+ else if (GvIOp(PL_defoutgv))
s = IoFMT_NAME(GvIOp(PL_defoutgv));
if (!s)
s = GvENAME(PL_defoutgv);
sv_setpv(sv,s);
break;
case '=':
- if (GvIOp(PL_defoutgv))
+ if (GvIO(PL_defoutgv))
sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
break;
case '-':
- if (GvIOp(PL_defoutgv))
+ if (GvIO(PL_defoutgv))
sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
break;
case '%':
- if (GvIOp(PL_defoutgv))
+ if (GvIO(PL_defoutgv))
sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
break;
case ':':
sv_setiv(sv, (IV)CopARYBASE_get(PL_curcop));
break;
case '|':
- if (GvIOp(PL_defoutgv))
+ if (GvIO(PL_defoutgv))
sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
break;
case '\\':
sv_copypv(sv, PL_ors_sv);
break;
case '!':
+ {
+ dSAVE_ERRNO;
#ifdef VMS
sv_setnv(sv, (NV)((errno == EVMSERR) ? vaxc$errno : errno));
- sv_setpv(sv, errno ? Strerror(errno) : "");
#else
- {
- dSAVE_ERRNO;
sv_setnv(sv, (NV)errno);
+#endif
#ifdef OS2
if (errno == errno_isOS2 || errno == errno_isOS2_set)
sv_setpv(sv, os2error(Perl_rc));
else
#endif
sv_setpv(sv, errno ? Strerror(errno) : "");
+ if (SvPOKp(sv))
+ SvPOK_on(sv); /* may have got removed during taint processing */
RESTORE_ERRNO;
}
-#endif
+
SvRTRIM(sv);
SvNOK_on(sv); /* what a wonderful hack! */
break;
#ifdef VMS
if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
char pathbuf[256], eltbuf[256], *cp, *elt;
- Stat_t sbuf;
int i = 0, j = 0;
my_strlcpy(eltbuf, s, sizeof(eltbuf));
{
dVAR;
/* Are we fetching a signal entry? */
- const I32 i = whichsig(MgPV_nolen_const(mg));
+ int i = (I16)mg->mg_private;
PERL_ARGS_ASSERT_MAGIC_GETSIG;
+ if (!i) {
+ mg->mg_private = i = whichsig(MgPV_nolen_const(mg));
+ }
+
if (i > 0) {
if(PL_psig_ptr[i])
sv_setsv(sv,PL_psig_ptr[i]);
int
Perl_magic_clearsig(pTHX_ SV *sv, MAGIC *mg)
{
- /* 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_ARGS_ASSERT_MAGIC_CLEARSIG;
PERL_UNUSED_ARG(sv);
- if (*s == '_') {
- SV** svp = NULL;
- if (strEQ(s,"__DIE__"))
- svp = &PL_diehook;
- else if (strEQ(s,"__WARN__") && PL_warnhook != PERL_WARNHOOK_FATAL)
- svp = &PL_warnhook;
- if (svp && *svp) {
- SV *const to_dec = *svp;
- *svp = NULL;
- 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 = newSVpvn((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 * const to_dec=PL_psig_ptr[i];
- PL_psig_ptr[i]=0;
- LEAVE;
- SvREFCNT_dec(to_dec);
- }
- else
- LEAVE;
- }
- }
- return 0;
+
+ magic_setsig(NULL, mg);
+ return sv_unmagic(sv, mg->mg_type);
}
Signal_t
#endif
(PL_signals & PERL_SIGNALS_UNSAFE_FLAG))
/* Call the perl level handler now--
- * with risk we may be in malloc() etc. */
+ * with risk we may be in malloc() or being destructed etc. */
#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
(*PL_sighandlerp)(sig, NULL, NULL);
#else
(*PL_sighandlerp)(sig);
#endif
else {
+ if (!PL_psig_pend) return;
/* Set a flag to say this signal is pending, that is awaiting delivery after
* the current Perl opcode completes */
PL_psig_pend[sig]++;
#ifndef SIG_PENDING_DIE_COUNT
# define SIG_PENDING_DIE_COUNT 120
#endif
- /* And one to say _a_ signal is pending */
+ /* Add one to say _a_ signal is pending */
if (++PL_sig_pending >= SIG_PENDING_DIE_COUNT)
Perl_croak(aTHX_ "Maximal count of pending signals (%lu) exceeded",
(unsigned long)SIG_PENDING_DIE_COUNT);
}
#endif
+#if defined HAS_SIGPROCMASK
+static void
+unblock_sigmask(pTHX_ void* newset)
+{
+ sigprocmask(SIG_UNBLOCK, (sigset_t*)newset, NULL);
+}
+#endif
+
void
Perl_despatch_signals(pTHX)
{
PL_sig_pending = 0;
for (sig = 1; sig < SIG_SIZE; sig++) {
if (PL_psig_pend[sig]) {
- PERL_BLOCKSIG_ADD(set, sig);
+ dSAVE_ERRNO;
+#ifdef HAS_SIGPROCMASK
+ /* From sigaction(2) (FreeBSD man page):
+ * | Signal routines normally execute with the signal that
+ * | caused their invocation blocked, but other signals may
+ * | yet occur.
+ * Emulation of this behavior (from within Perl) is enabled
+ * using sigprocmask
+ */
+ int was_blocked;
+ sigset_t newset, oldset;
+
+ sigemptyset(&newset);
+ sigaddset(&newset, sig);
+ sigprocmask(SIG_BLOCK, &newset, &oldset);
+ was_blocked = sigismember(&oldset, sig);
+ if (!was_blocked) {
+ SV* save_sv = newSVpvn((char *)(&newset), sizeof(sigset_t));
+ ENTER;
+ SAVEFREESV(save_sv);
+ SAVEDESTRUCTOR_X(unblock_sigmask, SvPV_nolen(save_sv));
+ }
+#endif
PL_psig_pend[sig] = 0;
- PERL_BLOCKSIG_BLOCK(set);
#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
(*PL_sighandlerp)(sig, NULL, NULL);
#else
(*PL_sighandlerp)(sig);
#endif
- PERL_BLOCKSIG_UNBLOCK(set);
+#ifdef HAS_SIGPROCMASK
+ if (!was_blocked)
+ LEAVE;
+#endif
+ RESTORE_ERRNO;
}
}
}
+/* sv of NULL signifies that we're acting as magic_clearsig. */
int
Perl_magic_setsig(pTHX_ SV *sv, MAGIC *mg)
{
if (*s == '_') {
if (strEQ(s,"__DIE__"))
svp = &PL_diehook;
- else if (strEQ(s,"__WARN__"))
+ else if (strEQ(s,"__WARN__")
+ && (sv ? 1 : PL_warnhook != PERL_WARNHOOK_FATAL)) {
+ /* Merge the existing behaviours, which are as follows:
+ magic_setsig, we always set svp to &PL_warnhook
+ (hence we always change the warnings handler)
+ For magic_clearsig, we don't change the warnings handler if it's
+ set to the &PL_warnhook. */
svp = &PL_warnhook;
- else
+ } else if (sv)
Perl_croak(aTHX_ "No such hook: %s", s);
i = 0;
- if (*svp) {
+ if (svp && *svp) {
if (*svp != PERL_WARNHOOK_FATAL)
to_dec = *svp;
*svp = NULL;
}
}
else {
- i = whichsig(s); /* ...no, a brick */
+ i = (I16)mg->mg_private;
+ if (!i) {
+ i = whichsig(s); /* ...no, a brick */
+ mg->mg_private = (U16)i;
+ }
if (i <= 0) {
- if (ckWARN(WARN_SIGNAL))
- Perl_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s);
+ if (sv)
+ Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "No such signal: SIG%s", s);
return 0;
}
#ifdef HAS_SIGPROCMASK
#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
PL_sig_defaulting[i] = 0;
#endif
- SvREFCNT_dec(PL_psig_name[i]);
to_dec = PL_psig_ptr[i];
- PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(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 (sv) {
+ PL_psig_ptr[i] = SvREFCNT_inc_simple_NN(sv);
+ SvTEMP_off(sv); /* Make sure it doesn't go away on us */
+
+ /* Signals don't change name during the program's execution, so once
+ they're cached in the appropriate slot of PL_psig_name, they can
+ stay there.
+
+ Ideally we'd find some way of making SVs at (C) compile time, or
+ at least, doing most of the work. */
+ if (!PL_psig_name[i]) {
+ PL_psig_name[i] = newSVpvn(s, len);
+ SvREADONLY_on(PL_psig_name[i]);
+ }
+ } else {
+ SvREFCNT_dec(PL_psig_name[i]);
+ PL_psig_name[i] = NULL;
+ PL_psig_ptr[i] = NULL;
+ }
}
- if (isGV_with_GP(sv) || SvROK(sv)) {
+ if (sv && (isGV_with_GP(sv) || SvROK(sv))) {
if (i) {
(void)rsignal(i, PL_csighandlerp);
-#ifdef HAS_SIGPROCMASK
- LEAVE;
-#endif
}
else
*svp = SvREFCNT_inc_simple_NN(sv);
- if(to_dec)
- SvREFCNT_dec(to_dec);
- return 0;
- }
- s = SvOK(sv) ? SvPV_force(sv,len) : "DEFAULT";
- if (strEQ(s,"IGNORE")) {
- if (i) {
+ } else {
+ if (sv && SvOK(sv)) {
+ s = SvPV_force(sv, len);
+ } else {
+ sv = NULL;
+ }
+ if (sv && strEQ(s,"IGNORE")) {
+ if (i) {
#ifdef FAKE_PERSISTENT_SIGNAL_HANDLERS
- PL_sig_ignoring[i] = 1;
- (void)rsignal(i, PL_csighandlerp);
+ PL_sig_ignoring[i] = 1;
+ (void)rsignal(i, PL_csighandlerp);
#else
- (void)rsignal(i, (Sighandler_t) SIG_IGN);
+ (void)rsignal(i, (Sighandler_t) SIG_IGN);
#endif
+ }
}
- }
- else if (strEQ(s,"DEFAULT") || !*s) {
- if (i)
+ else if (!sv || strEQ(s,"DEFAULT") || !len) {
+ if (i) {
#ifdef FAKE_DEFAULT_SIGNAL_HANDLERS
- {
- PL_sig_defaulting[i] = 1;
- (void)rsignal(i, PL_csighandlerp);
- }
+ PL_sig_defaulting[i] = 1;
+ (void)rsignal(i, PL_csighandlerp);
#else
- (void)rsignal(i, (Sighandler_t) SIG_DFL);
+ (void)rsignal(i, (Sighandler_t) SIG_DFL);
#endif
+ }
+ }
+ else {
+ /*
+ * We should warn if HINT_STRICT_REFS, but without
+ * 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,'\''))
+ Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"),
+ SV_GMAGIC);
+ if (i)
+ (void)rsignal(i, PL_csighandlerp);
+ else
+ *svp = SvREFCNT_inc_simple_NN(sv);
+ }
}
- else {
- /*
- * We should warn if HINT_STRICT_REFS, but without
- * 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,'\''))
- Perl_sv_insert_flags(aTHX_ sv, 0, 0, STR_WITH_LEN("main::"),
- SV_GMAGIC);
- if (i)
- (void)rsignal(i, PL_csighandlerp);
- else
- *svp = SvREFCNT_inc_simple_NN(sv);
- }
+
#ifdef HAS_SIGPROCMASK
if(i)
LEAVE;
#endif
- if(to_dec)
- SvREFCNT_dec(to_dec);
+ SvREFCNT_dec(to_dec);
return 0;
}
#endif /* !PERL_MICRO */
Perl_magic_setisa(pTHX_ SV *sv, MAGIC *mg)
{
dVAR;
- HV* stash;
-
PERL_ARGS_ASSERT_MAGIC_SETISA;
PERL_UNUSED_ARG(sv);
- /* Bail out if destruction is going on */
- if(PL_dirty) return 0;
-
/* Skip _isaelem because _isa will handle it shortly */
- if (PL_delaymagic & DM_ARRAY && mg->mg_type == PERL_MAGIC_isaelem)
+ if (PL_delaymagic & DM_ARRAY_ISA && mg->mg_type == PERL_MAGIC_isaelem)
return 0;
- /* XXX Once it's possible, we need to
- detect that our @ISA is aliased in
- other stashes, and act on the stashes
- of all of the aliases */
-
- /* The first case occurs via setisa,
- the second via setisa_elem, which
- calls this same magic */
- stash = GvSTASH(
- SvTYPE(mg->mg_obj) == SVt_PVGV
- ? (const GV *)mg->mg_obj
- : (const GV *)mg_find(mg->mg_obj, PERL_MAGIC_isa)->mg_obj
- );
-
- if (stash)
- mro_isa_changed_in(stash);
-
- return 0;
+ return magic_clearisa(NULL, mg);
}
+/* sv of NULL signifies that we're acting as magic_setisa. */
int
Perl_magic_clearisa(pTHX_ SV *sv, MAGIC *mg)
{
PERL_ARGS_ASSERT_MAGIC_CLEARISA;
/* Bail out if destruction is going on */
- if(PL_dirty) return 0;
+ if(PL_phase == PERL_PHASE_DESTRUCT) return 0;
- av_clear(MUTABLE_AV(sv));
+ if (sv)
+ av_clear(MUTABLE_AV(sv));
+
+ if (SvTYPE(mg->mg_obj) != SVt_PVGV && SvSMAGICAL(mg->mg_obj))
+ /* This occurs with setisa_elem magic, which calls this
+ same function. */
+ mg = mg_find(mg->mg_obj, PERL_MAGIC_isa);
+
+ if (SvTYPE(mg->mg_obj) == SVt_PVAV) { /* multiple stashes */
+ SV **svp = AvARRAY((AV *)mg->mg_obj);
+ I32 items = AvFILLp((AV *)mg->mg_obj) + 1;
+ while (items--) {
+ stash = GvSTASH((GV *)*svp++);
+ if (stash && HvENAME(stash)) mro_isa_changed_in(stash);
+ }
+
+ return 0;
+ }
- /* XXX see comments in magic_setisa */
stash = GvSTASH(
- SvTYPE(mg->mg_obj) == SVt_PVGV
- ? (const GV *)mg->mg_obj
- : (const GV *)mg_find(mg->mg_obj, PERL_MAGIC_isa)->mg_obj
+ (const GV *)mg->mg_obj
);
- if (stash)
+ /* The stash may have been detached from the symbol table, so check its
+ name before doing anything. */
+ if (stash && HvENAME_get(stash))
mro_isa_changed_in(stash);
return 0;
return 0;
}
-/* caller is responsible for stack switching/cleanup */
-STATIC int
-S_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, I32 flags, int n, SV *val)
+/*
+=for apidoc magic_methcall
+
+Invoke a magic method (like FETCH).
+
+* sv and mg are the tied thingy and the tie magic;
+* meth is the name of the method to call;
+* argc is the number of args (in addition to $self) to pass to the method;
+ the args themselves are any values following the argc argument.
+* flags:
+ G_DISCARD: invoke method with G_DISCARD flag and don't return a value
+ G_UNDEF_FILL: fill the stack with argc pointers to PL_sv_undef.
+
+Returns the SV (if any) returned by the method, or NULL on failure.
+
+
+=cut
+*/
+
+SV*
+Perl_magic_methcall(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags,
+ U32 argc, ...)
{
dVAR;
dSP;
+ SV* ret = NULL;
PERL_ARGS_ASSERT_MAGIC_METHCALL;
+ ENTER;
+
+ if (flags & G_WRITING_TO_STDERR) {
+ SAVETMPS;
+
+ save_re_context();
+ SAVESPTR(PL_stderrgv);
+ PL_stderrgv = NULL;
+ }
+
+ PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
- EXTEND(SP, n);
+
+ EXTEND(SP, argc+1);
PUSHs(SvTIED_obj(sv, mg));
- if (n > 1) {
- if (mg->mg_ptr) {
- if (mg->mg_len >= 0)
- mPUSHp(mg->mg_ptr, mg->mg_len);
- else if (mg->mg_len == HEf_SVKEY)
- PUSHs(MUTABLE_SV(mg->mg_ptr));
- }
- else if (mg->mg_type == PERL_MAGIC_tiedelem) {
- mPUSHi(mg->mg_len);
+ if (flags & G_UNDEF_FILL) {
+ while (argc--) {
+ PUSHs(&PL_sv_undef);
}
- }
- if (n > 2) {
- PUSHs(val);
+ } else if (argc > 0) {
+ va_list args;
+ va_start(args, argc);
+
+ do {
+ SV *const sv = va_arg(args, SV *);
+ PUSHs(sv);
+ } while (--argc);
+
+ va_end(args);
}
PUTBACK;
+ if (flags & G_DISCARD) {
+ call_method(meth, G_SCALAR|G_DISCARD);
+ }
+ else {
+ if (call_method(meth, G_SCALAR))
+ ret = *PL_stack_sp--;
+ }
+ POPSTACK;
+ if (flags & G_WRITING_TO_STDERR)
+ FREETMPS;
+ LEAVE;
+ return ret;
+}
+
+
+/* wrapper for magic_methcall that creates the first arg */
+
+STATIC SV*
+S_magic_methcall1(pTHX_ SV *sv, const MAGIC *mg, const char *meth, U32 flags,
+ int n, SV *val)
+{
+ dVAR;
+ SV* arg1 = NULL;
+
+ PERL_ARGS_ASSERT_MAGIC_METHCALL1;
- return call_method(meth, flags);
+ if (mg->mg_ptr) {
+ if (mg->mg_len >= 0) {
+ arg1 = newSVpvn_flags(mg->mg_ptr, mg->mg_len, SVs_TEMP);
+ }
+ else if (mg->mg_len == HEf_SVKEY)
+ arg1 = MUTABLE_SV(mg->mg_ptr);
+ }
+ else if (mg->mg_type == PERL_MAGIC_tiedelem) {
+ arg1 = newSViv((IV)(mg->mg_len));
+ sv_2mortal(arg1);
+ }
+ if (!arg1) {
+ return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n - 1, val);
+ }
+ return Perl_magic_methcall(aTHX_ sv, mg, meth, flags, n, arg1, val);
}
STATIC int
S_magic_methpack(pTHX_ SV *sv, const MAGIC *mg, const char *meth)
{
- dVAR; dSP;
+ dVAR;
+ SV* ret;
PERL_ARGS_ASSERT_MAGIC_METHPACK;
- ENTER;
- SAVETMPS;
- PUSHSTACKi(PERLSI_MAGIC);
-
- if (magic_methcall(sv, mg, meth, G_SCALAR, 2, NULL)) {
- sv_setsv(sv, *PL_stack_sp--);
- }
-
- POPSTACK;
- FREETMPS;
- LEAVE;
+ ret = magic_methcall1(sv, mg, meth, 0, 1, NULL);
+ if (ret)
+ sv_setsv(sv, ret);
return 0;
}
{
PERL_ARGS_ASSERT_MAGIC_GETPACK;
- if (mg->mg_ptr)
+ if (mg->mg_type == PERL_MAGIC_tiedelem)
mg->mg_flags |= MGf_GSKIP;
magic_methpack(sv,mg,"FETCH");
return 0;
int
Perl_magic_setpack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR; dSP;
+ dVAR;
+ MAGIC *tmg;
+ SV *val;
PERL_ARGS_ASSERT_MAGIC_SETPACK;
- ENTER;
- PUSHSTACKi(PERLSI_MAGIC);
- magic_methcall(sv, mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
- POPSTACK;
- LEAVE;
+ /* in the code C<$tied{foo} = $val>, the "thing" that gets passed to
+ * STORE() is not $val, but rather a PVLV (the sv in this call), whose
+ * public flags indicate its value based on copying from $val. Doing
+ * mg_set() on the PVLV temporarily does SvMAGICAL_off(), then calls us.
+ * So STORE()'s $_[2] arg is a temporarily disarmed PVLV. This goes
+ * wrong if $val happened to be tainted, as sv hasn't got magic
+ * enabled, even though taint magic is in the chain. In which case,
+ * fake up a temporary tainted value (this is easier than temporarily
+ * re-enabling magic on sv). */
+
+ if (PL_tainting && (tmg = mg_find(sv, PERL_MAGIC_taint))
+ && (tmg->mg_len & 1))
+ {
+ val = sv_mortalcopy(sv);
+ SvTAINTED_on(val);
+ }
+ else
+ val = sv;
+
+ magic_methcall1(sv, mg, "STORE", G_DISCARD, 2, val);
return 0;
}
U32
Perl_magic_sizepack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR; dSP;
+ dVAR;
I32 retval = 0;
+ SV* retsv;
PERL_ARGS_ASSERT_MAGIC_SIZEPACK;
- ENTER;
- SAVETMPS;
- PUSHSTACKi(PERLSI_MAGIC);
- if (magic_methcall(sv, mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
- sv = *PL_stack_sp--;
- retval = SvIV(sv)-1;
+ retsv = magic_methcall1(sv, mg, "FETCHSIZE", 0, 1, NULL);
+ if (retsv) {
+ retval = SvIV(retsv)-1;
if (retval < -1)
Perl_croak(aTHX_ "FETCHSIZE returned a negative value");
}
- POPSTACK;
- FREETMPS;
- LEAVE;
return (U32) retval;
}
int
Perl_magic_wipepack(pTHX_ SV *sv, MAGIC *mg)
{
- dVAR; dSP;
+ dVAR;
PERL_ARGS_ASSERT_MAGIC_WIPEPACK;
- ENTER;
- PUSHSTACKi(PERLSI_MAGIC);
- PUSHMARK(SP);
- XPUSHs(SvTIED_obj(sv, mg));
- PUTBACK;
- call_method("CLEAR", G_SCALAR|G_DISCARD);
- POPSTACK;
- LEAVE;
-
+ Perl_magic_methcall(aTHX_ sv, mg, "CLEAR", G_DISCARD, 0);
return 0;
}
int
Perl_magic_nextpack(pTHX_ SV *sv, MAGIC *mg, SV *key)
{
- dVAR; dSP;
- const char * const meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
+ dVAR;
+ SV* ret;
PERL_ARGS_ASSERT_MAGIC_NEXTPACK;
- ENTER;
- SAVETMPS;
- PUSHSTACKi(PERLSI_MAGIC);
- PUSHMARK(SP);
- EXTEND(SP, 2);
- PUSHs(SvTIED_obj(sv, mg));
- if (SvOK(key))
- PUSHs(key);
- PUTBACK;
-
- if (call_method(meth, G_SCALAR))
- sv_setsv(key, *PL_stack_sp--);
-
- POPSTACK;
- FREETMPS;
- LEAVE;
+ ret = SvOK(key) ? Perl_magic_methcall(aTHX_ sv, mg, "NEXTKEY", 0, 1, key)
+ : Perl_magic_methcall(aTHX_ sv, mg, "FIRSTKEY", 0, 0);
+ if (ret)
+ sv_setsv(key,ret);
return 0;
}
SV *
Perl_magic_scalarpack(pTHX_ HV *hv, MAGIC *mg)
{
- dVAR; dSP;
+ dVAR;
SV *retval;
SV * const tied = SvTIED_obj(MUTABLE_SV(hv), mg);
HV * const pkg = SvSTASH((const SV *)SvRV(tied));
}
/* 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--;
- else
+ retval = Perl_magic_methcall(aTHX_ MUTABLE_SV(hv), mg, "SCALAR", 0, 0);
+ if (!retval)
retval = &PL_sv_undef;
- POPSTACK;
- LEAVE;
return retval;
}
if (obj) {
av_fill(obj, SvIV(sv) - CopARYBASE_get(PL_curcop));
} else {
- if (ckWARN(WARN_MISC))
- Perl_warner(aTHX_ packWARN(WARN_MISC),
- "Attempt to set length of freed array");
+ Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
+ "Attempt to set length of freed array");
}
return 0;
}
STRLEN len;
SV * const lsv = LvTARG(sv);
const char * const tmps = SvPV_const(lsv,len);
- I32 offs = LvTARGOFF(sv);
- I32 rem = LvTARGLEN(sv);
+ STRLEN offs = LvTARGOFF(sv);
+ STRLEN rem = LvTARGLEN(sv);
PERL_ARGS_ASSERT_MAGIC_GETSUBSTR;
PERL_UNUSED_ARG(mg);
if (SvUTF8(lsv))
- sv_pos_u2b(lsv, &offs, &rem);
- if (offs > (I32)len)
+ offs = sv_pos_u2b_flags(lsv, offs, &rem, SV_CONST_RETURN);
+ if (offs > len)
offs = len;
- if (rem + offs > (I32)len)
+ if (rem > len - offs)
rem = len - offs;
- sv_setpvn(sv, tmps + offs, (STRLEN)rem);
+ sv_setpvn(sv, tmps + offs, rem);
if (SvUTF8(lsv))
SvUTF8_on(sv);
return 0;
STRLEN len;
const char * const tmps = SvPV_const(sv, len);
SV * const lsv = LvTARG(sv);
- I32 lvoff = LvTARGOFF(sv);
- I32 lvlen = LvTARGLEN(sv);
+ STRLEN lvoff = LvTARGOFF(sv);
+ STRLEN lvlen = LvTARGLEN(sv);
PERL_ARGS_ASSERT_MAGIC_SETSUBSTR;
PERL_UNUSED_ARG(mg);
if (DO_UTF8(sv)) {
sv_utf8_upgrade(lsv);
- sv_pos_u2b(lsv, &lvoff, &lvlen);
+ lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN);
sv_insert(lsv, lvoff, lvlen, tmps, len);
LvTARGLEN(sv) = sv_len_utf8(sv);
SvUTF8_on(lsv);
}
else if (lsv && SvUTF8(lsv)) {
const char *utf8;
- sv_pos_u2b(lsv, &lvoff, &lvlen);
+ lvoff = sv_pos_u2b_flags(lsv, lvoff, &lvlen, SV_CONST_RETURN);
LvTARGLEN(sv) = len;
utf8 = (char*)bytes_to_utf8((U8*)tmps, &len);
sv_insert(lsv, lvoff, lvlen, utf8, len);
LvTARGLEN(sv) = len;
}
-
return 0;
}
Perl_magic_killbackrefs(pTHX_ SV *sv, MAGIC *mg)
{
PERL_ARGS_ASSERT_MAGIC_KILLBACKREFS;
- return Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj));
+ Perl_sv_kill_backrefs(aTHX_ sv, MUTABLE_AV(mg->mg_obj));
+ return 0;
}
int
PERL_ARGS_ASSERT_MAGIC_SETMGLOB;
PERL_UNUSED_CONTEXT;
mg->mg_len = -1;
- SvSCREAM_off(sv);
+ if (!isGV_with_GP(sv))
+ SvSCREAM_off(sv);
return 0;
}
SvVALID_off(sv);
} else {
assert(type == PERL_MAGIC_fm);
- SvCOMPILED_off(sv);
}
return sv_unmagic(sv, type);
}
const char * const remaining = mg->mg_ptr + 1;
I32 i;
STRLEN len;
+ MAGIC *tmg;
PERL_ARGS_ASSERT_MAGIC_SET;
setparen:
if (PL_curpm && (rx = PM_GETRE(PL_curpm))) {
CALLREG_NUMBUF_STORE((REGEXP * const)rx,paren,sv);
- break;
} else {
/* Croak with a READONLY error when a numbered match var is
* set without a previous pattern match. Unless it's C<local $1>
*/
if (!PL_localizing) {
- Perl_croak(aTHX_ "%s", PL_no_modify);
+ Perl_croak_no_modify(aTHX);
}
}
+ break;
case '\001': /* ^A */
sv_setsv(PL_bodytarget, sv);
+ /* mg_set() has temporarily made sv non-magical */
+ if (PL_tainting) {
+ if ((tmg = mg_find(sv,PERL_MAGIC_taint)) && tmg->mg_len & 1)
+ SvTAINTED_on(PL_bodytarget);
+ else
+ SvTAINTED_off(PL_bodytarget);
+ }
break;
case '\003': /* ^C */
- PL_minus_c = (bool)SvIV(sv);
+ PL_minus_c = cBOOL(SvIV(sv));
break;
case '\004': /* ^D */
#ifdef DEBUGGING
s = SvPV_nolen_const(sv);
PL_debug = get_debug_opts(&s, 0) | DEBUG_TOP_FLAG;
- DEBUG_x(dump_all());
+ if (DEBUG_x_TEST || DEBUG_B_TEST)
+ dump_all_perl(!DEBUG_B_TEST);
#else
PL_debug = (SvIV(sv)) | DEBUG_TOP_FLAG;
#endif
#endif
}
else if (strEQ(mg->mg_ptr+1, "NCODING")) {
- if (PL_encoding)
- SvREFCNT_dec(PL_encoding);
+ SvREFCNT_dec(PL_encoding);
if (SvOK(sv) || SvGMAGICAL(sv)) {
PL_encoding = newSVsv(sv);
}
const char *const start = SvPV(sv, len);
const char *out = (const char*)memchr(start, '\0', len);
SV *tmp;
- struct refcounted_he *tmp_he;
PL_compiling.cop_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT;
- PL_hints
- |= HINT_LOCALIZE_HH | HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT;
+ PL_hints |= HINT_LEXICAL_IO_IN | HINT_LEXICAL_IO_OUT;
/* Opening for input is more common than opening for output, so
ensure that hints for input are sooner on linked list. */
tmp = out ? newSVpvn_flags(out + 1, start + len - out - 1,
- SVs_TEMP | SvUTF8(sv))
- : newSVpvs_flags("", SVs_TEMP | SvUTF8(sv));
-
- tmp_he
- = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash,
- newSVpvs_flags("open>", SVs_TEMP),
- tmp);
-
- /* The UTF-8 setting is carried over */
- sv_setpvn(tmp, start, out ? (STRLEN)(out - start) : len);
+ SvUTF8(sv))
+ : newSVpvs_flags("", SvUTF8(sv));
+ (void)hv_stores(GvHV(PL_hintgv), "open>", tmp);
+ mg_set(tmp);
- PL_compiling.cop_hints_hash
- = Perl_refcounted_he_new(aTHX_ tmp_he,
- newSVpvs_flags("open<", SVs_TEMP),
- tmp);
+ tmp = newSVpvn_flags(start, out ? (STRLEN)(out - start) : len,
+ SvUTF8(sv));
+ (void)hv_stores(GvHV(PL_hintgv), "open<", tmp);
+ mg_set(tmp);
}
break;
case '\020': /* ^P */
} else if (strEQ(remaining, "OSTMATCH")) { /* $^POSTMATCH */
goto do_postmatch;
}
+ break;
case '\024': /* ^T */
#ifdef BIG_TIME
PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
IoLINES(GvIOp(PL_last_in_gv)) = SvIV(sv);
break;
case '^':
- Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
- s = IoTOP_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
- IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
+ if (isGV_with_GP(PL_defoutgv)) {
+ Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
+ s = 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_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
+ if (isGV_with_GP(PL_defoutgv)) {
+ Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
+ s = IoFMT_NAME(GvIOp(PL_defoutgv)) = savesvpv(sv);
+ IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchsv(sv, GV_ADD, SVt_PVIO);
+ }
break;
case '=':
- IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv));
+ if (isGV_with_GP(PL_defoutgv))
+ IoPAGE_LEN(GvIOp(PL_defoutgv)) = (SvIV(sv));
break;
case '-':
- IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv));
- if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
- IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
+ if (isGV_with_GP(PL_defoutgv)) {
+ IoLINES_LEFT(GvIOp(PL_defoutgv)) = (SvIV(sv));
+ if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
+ IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
+ }
break;
case '%':
- IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv));
+ if (isGV_with_GP(PL_defoutgv))
+ IoPAGE(GvIOp(PL_defoutgv)) = (SvIV(sv));
break;
case '|':
{
- IO * const io = GvIOp(PL_defoutgv);
+ IO * const io = GvIO(PL_defoutgv);
if(!io)
break;
if ((SvIV(sv)) == 0)
PL_rs = newSVsv(sv);
break;
case '\\':
- if (PL_ors_sv)
- SvREFCNT_dec(PL_ors_sv);
+ SvREFCNT_dec(PL_ors_sv);
if (SvOK(sv) || SvGMAGICAL(sv)) {
PL_ors_sv = newSVsv(sv);
}
case '?':
#ifdef COMPLEX_STATUS
if (PL_localizing == 2) {
+ SvUPGRADE(sv, SVt_PVLV);
PL_statusvalue = LvTARGOFF(sv);
PL_statusvalue_vms = LvTARGLEN(sv);
}
#endif
#endif
PL_uid = PerlProc_getuid();
- PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
break;
case '>':
PL_euid = SvIV(sv);
#endif
#endif
PL_euid = PerlProc_geteuid();
- PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
break;
case '(':
PL_gid = SvIV(sv);
#endif
#endif
PL_gid = PerlProc_getgid();
- PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
break;
case ')':
#ifdef HAS_SETGROUPS
{
const char *p = SvPV_const(sv, len);
Groups_t *gary = NULL;
+#ifdef _SC_NGROUPS_MAX
+ int maxgrp = sysconf(_SC_NGROUPS_MAX);
+
+ if (maxgrp < 0)
+ maxgrp = NGROUPS;
+#else
+ int maxgrp = NGROUPS;
+#endif
while (isSPACE(*p))
++p;
PL_egid = Atol(p);
- for (i = 0; i < NGROUPS; ++i) {
+ for (i = 0; i < maxgrp; ++i) {
while (*p && !isSPACE(*p))
++p;
while (isSPACE(*p))
#endif
#endif
PL_egid = PerlProc_getegid();
- PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
break;
case ':':
PL_chopset = SvPV_force(sv,len);
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
UNLOCK_DOLLARZERO_MUTEX;
Signal_t
#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
-Perl_sighandler(int sig, siginfo_t *sip, void *uap PERL_UNUSED_DECL)
+Perl_sighandler(int sig, siginfo_t *sip, void *uap)
#else
Perl_sighandler(int sig)
#endif
OP *myop = PL_op;
U32 flags = 0;
XPV * const tXpv = PL_Xpv;
+ I32 old_ss_ix = PL_savestack_ix;
- if (PL_savestack_ix + 15 <= PL_savestack_max)
- flags |= 1;
- if (PL_markstack_ptr < PL_markstack_max - 2)
- flags |= 4;
- if (PL_scopestack_ix < PL_scopestack_max - 3)
- flags |= 16;
if (!PL_psig_ptr[sig]) {
PerlIO_printf(Perl_error_log, "Signal SIG%s received, but no signal handler set.\n",
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(S_unwind_handler_stack, (void*)&flags);
+ if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) {
+ /* Max number of items pushed there is 3*n or 4. We cannot fix
+ infinity, so we fix 4 (in fact 5): */
+ if (PL_savestack_ix + 15 <= PL_savestack_max) {
+ flags |= 1;
+ PL_savestack_ix += 5; /* Protect save in progress. */
+ SAVEDESTRUCTOR_X(S_unwind_handler_stack, NULL);
+ }
}
- if (flags & 4)
- PL_markstack_ptr++; /* Protect mark. */
- if (flags & 16)
- PL_scopestack_ix += 1;
/* sv_2cv is too complicated, try a simpler variant first: */
if (!SvROK(PL_psig_ptr[sig]) || !(cv = MUTABLE_CV(SvRV(PL_psig_ptr[sig])))
|| SvTYPE(cv) != SVt_PVCV) {
}
if (!cv || !CvROOT(cv)) {
- if (ckWARN(WARN_SIGNAL))
- 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))
- : "__ANON__")));
+ Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL), "SIG%s handler \"%s\" not defined.\n",
+ PL_sig_name[sig], (gv ? GvENAME(gv)
+ : ((cv && CvGV(cv))
+ ? GvENAME(CvGV(cv))
+ : "__ANON__")));
goto cleanup;
}
- if(PL_psig_name[sig]) {
- sv = SvREFCNT_inc_NN(PL_psig_name[sig]);
- flags |= 64;
-#if !defined(PERL_IMPLICIT_CONTEXT)
- PL_sig_sv = sv;
-#endif
- } else {
- sv = sv_newmortal();
- sv_setpv(sv,PL_sig_name[sig]);
+ sv = PL_psig_name[sig]
+ ? SvREFCNT_inc_NN(PL_psig_name[sig])
+ : newSVpv(PL_sig_name[sig],0);
+ flags |= 8;
+ SAVEFREESV(sv);
+
+ if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG) {
+ /* make sure our assumption about the size of the SAVEs are correct:
+ * 3 for SAVEDESTRUCTOR_X, 2 for SAVEFREESV */
+ assert(old_ss_ix + 2 + ((flags & 1) ? 3+5 : 0) == PL_savestack_ix);
}
PUSHSTACKi(PERLSI_SIGNAL);
POPSTACK;
if (SvTRUE(ERRSV)) {
#ifndef PERL_MICRO
-#ifdef HAS_SIGPROCMASK
/* Handler "died", for example to get out of a restart-able read().
* Before we re-do that on its behalf re-enable the signal which was
* blocked by the system when we entered.
*/
- sigset_t set;
- sigemptyset(&set);
- sigaddset(&set,sig);
- sigprocmask(SIG_UNBLOCK, &set, NULL);
+#ifdef HAS_SIGPROCMASK
+#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
+ if (sip || uap)
+#endif
+ {
+ sigset_t set;
+ sigemptyset(&set);
+ sigaddset(&set,sig);
+ sigprocmask(SIG_UNBLOCK, &set, NULL);
+ }
#else
/* Not clear if this will work */
(void)rsignal(sig, SIG_IGN);
(void)rsignal(sig, PL_csighandlerp);
#endif
#endif /* !PERL_MICRO */
- Perl_die(aTHX_ NULL);
+ die_sv(ERRSV);
}
cleanup:
- if (flags & 1)
- PL_savestack_ix -= 8; /* Unprotect save in progress. */
- if (flags & 4)
- PL_markstack_ptr--;
- if (flags & 16)
- PL_scopestack_ix -= 1;
- if (flags & 64)
+ /* pop any of SAVEFREESV, SAVEDESTRUCTOR_X and "save in progress" */
+ PL_savestack_ix = old_ss_ix;
+ if (flags & 8)
SvREFCNT_dec(sv);
PL_op = myop; /* Apparently not needed... */
dVAR;
MGS* const mgs = SSPTR(PTR2IV(p), MGS*);
SV* const sv = mgs->mgs_sv;
+ bool bumped;
if (!sv)
return;
sv_force_normal_flags(sv, 0);
#endif
- if (mgs->mgs_flags)
- SvFLAGS(sv) |= mgs->mgs_flags;
+ if (mgs->mgs_readonly)
+ SvREADONLY_on(sv);
+ if (mgs->mgs_magical)
+ SvFLAGS(sv) |= mgs->mgs_magical;
else
mg_magical(sv);
if (SvGMAGICAL(sv)) {
}
}
+ bumped = mgs->mgs_bumped;
mgs->mgs_sv = NULL; /* mark the MGS structure as restored */
/* If we're still on top of the stack, pop us off. (That condition
*/
if (PL_savestack_ix == mgs->mgs_ss_ix)
{
- I32 popval = SSPOPINT;
+ UV popval = SSPOPUV;
assert(popval == SAVEt_DESTRUCTOR_X);
PL_savestack_ix -= 2;
- popval = SSPOPINT;
- assert(popval == SAVEt_ALLOC);
- popval = SSPOPINT;
- PL_savestack_ix -= popval;
+ popval = SSPOPUV;
+ assert((popval & SAVE_MASK) == SAVEt_ALLOC);
+ PL_savestack_ix -= popval >> SAVE_TIGHT_SHIFT;
+ }
+ if (bumped) {
+ 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.
+ So artificially keep it alive a bit longer.
+ We avoid turning on the TEMP flag, which can cause the SV's
+ buffer to get stolen (and maybe other stuff). */
+ int was_temp = SvTEMP(sv);
+ sv_2mortal(sv);
+ if (!was_temp) {
+ SvTEMP_off(sv);
+ }
+ SvOK_off(sv);
+ }
+ else
+ SvREFCNT_dec(sv); /* undo the inc in S_save_magic() */
}
-
}
+/* clean up the mess created by Perl_sighandler().
+ * Note that this is only called during an exit in a signal handler;
+ * a die is trapped by the call_sv() and the SAVEDESTRUCTOR_X manually
+ * skipped over. */
+
static void
S_unwind_handler_stack(pTHX_ const void *p)
{
dVAR;
- const U32 flags = *(const U32*)p;
-
- PERL_ARGS_ASSERT_UNWIND_HANDLER_STACK;
+ PERL_UNUSED_ARG(p);
- if (flags & 1)
- PL_savestack_ix -= 5; /* Unprotect save in progress. */
-#if !defined(PERL_IMPLICIT_CONTEXT)
- if (flags & 64)
- SvREFCNT_dec(PL_sig_sv);
-#endif
+ PL_savestack_ix -= 5; /* Unprotect save in progress. */
}
/*
Doing this here saves a lot of doing it manually in perl code (and
forgetting to do it, and consequent subtle errors. */
PL_hints |= HINT_LOCALIZE_HH;
- PL_compiling.cop_hints_hash
- = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash, key, sv);
+ CopHINTHASH_set(&PL_compiling,
+ cophh_store_sv(CopHINTHASH_get(&PL_compiling), key, 0, sv, 0));
return 0;
}
PERL_UNUSED_ARG(sv);
PL_hints |= HINT_LOCALIZE_HH;
- PL_compiling.cop_hints_hash
- = Perl_refcounted_he_new(aTHX_ PL_compiling.cop_hints_hash,
- MUTABLE_SV(mg->mg_ptr), &PL_sv_placeholder);
+ CopHINTHASH_set(&PL_compiling,
+ cophh_delete_sv(CopHINTHASH_get(&PL_compiling),
+ MUTABLE_SV(mg->mg_ptr), 0, 0));
+ return 0;
+}
+
+/*
+=for apidoc magic_clearhints
+
+Triggered by clearing %^H, resets C<PL_compiling.cop_hints_hash>.
+
+=cut
+*/
+int
+Perl_magic_clearhints(pTHX_ SV *sv, MAGIC *mg)
+{
+ PERL_ARGS_ASSERT_MAGIC_CLEARHINTS;
+ PERL_UNUSED_ARG(sv);
+ PERL_UNUSED_ARG(mg);
+ cophh_free(CopHINTHASH_get(&PL_compiling));
+ CopHINTHASH_set(&PL_compiling, cophh_new_empty());
return 0;
}
https://perl5.git.perl.org / perl5.git / blobdiff