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Diffstat (limited to 'pp_sys.c')
-rw-r--r--pp_sys.c201
1 files changed, 82 insertions, 119 deletions
diff --git a/pp_sys.c b/pp_sys.c
index 5c1ebd2b1c..4d22a8244e 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -330,10 +330,7 @@ PP(pp_backtick)
mode = "rt";
fp = PerlProc_popen(tmps, mode);
if (fp) {
- const char *type = NULL;
- if (PL_curcop->cop_io) {
- type = SvPV_nolen_const(PL_curcop->cop_io);
- }
+ const char * const type = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : NULL;
if (type && *type)
PerlIO_apply_layers(aTHX_ fp,mode,type);
@@ -488,11 +485,11 @@ PP(pp_die)
if (!multiarg)
SvSetSV(error,tmpsv);
else if (sv_isobject(error)) {
- HV *stash = SvSTASH(SvRV(error));
- GV *gv = gv_fetchmethod(stash, "PROPAGATE");
+ HV * const stash = SvSTASH(SvRV(error));
+ GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
if (gv) {
- SV *file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
- SV *line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
+ SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
+ SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
EXTEND(SP, 3);
PUSHMARK(SP);
PUSHs(error);
@@ -880,7 +877,7 @@ PP(pp_untie)
if ((mg = SvTIED_mg(sv, how))) {
SV * const obj = SvRV(SvTIED_obj(sv, mg));
- CV *cv = NULL;
+ CV *cv;
if (obj) {
GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
if (gv && isGV(gv) && (cv = GvCV(gv))) {
@@ -1158,12 +1155,10 @@ Perl_setdefout(pTHX_ GV *gv)
PP(pp_select)
{
dSP; dTARGET;
- GV *egv;
HV *hv;
-
GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
+ GV * egv = GvEGV(PL_defoutgv);
- egv = GvEGV(PL_defoutgv);
if (!egv)
egv = PL_defoutgv;
hv = GvSTASH(egv);
@@ -1775,7 +1770,6 @@ PP(pp_sysread)
PP(pp_send)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
- GV *gv;
IO *io;
SV *bufsv;
const char *buffer;
@@ -1785,7 +1779,7 @@ PP(pp_send)
MAGIC *mg;
const int op_type = PL_op->op_type;
- gv = (GV*)*++MARK;
+ GV *const gv = (GV*)*++MARK;
if (PL_op->op_type == OP_SYSWRITE
&& gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
@@ -2009,17 +2003,16 @@ PP(pp_tell)
PP(pp_sysseek)
{
dVAR; dSP;
- GV *gv;
IO *io;
const int whence = POPi;
#if LSEEKSIZE > IVSIZE
- Off_t offset = (Off_t)SvNVx(POPs);
+ const Off_t offset = (Off_t)SvNVx(POPs);
#else
- Off_t offset = (Off_t)SvIVx(POPs);
+ const Off_t offset = (Off_t)SvIVx(POPs);
#endif
MAGIC *mg;
- gv = PL_last_in_gv = (GV*)POPs;
+ GV * const gv = PL_last_in_gv = (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
@@ -2047,7 +2040,7 @@ PP(pp_sysseek)
if (sought < 0)
PUSHs(&PL_sv_undef);
else {
- SV* sv = sought ?
+ SV* const sv = sought ?
#if LSEEKSIZE > IVSIZE
newSVnv((NV)sought)
#else
@@ -2068,12 +2061,11 @@ PP(pp_truncate)
* general one would think that when using large files, off_t is
* at least as wide as size_t, so using an off_t should be okay. */
/* XXX Configure probe for the length type of *truncate() needed XXX */
- Off_t len;
#if Off_t_size > IVSIZE
- len = (Off_t)POPn;
+ const Off_t len = (Off_t)POPn;
#else
- len = (Off_t)POPi;
+ const Off_t len = (Off_t)POPi;
#endif
/* Checking for length < 0 is problematic as the type might or
* might not be signed: if it is not, clever compilers will moan. */
@@ -2110,7 +2102,7 @@ PP(pp_truncate)
}
}
else {
- SV *sv = POPs;
+ SV * const sv = POPs;
const char *name;
if (SvTYPE(sv) == SVt_PVGV) {
@@ -2133,9 +2125,9 @@ PP(pp_truncate)
result = 0;
#else
{
- int tmpfd;
+ const int tmpfd = PerlLIO_open(name, O_RDWR);
- if ((tmpfd = PerlLIO_open(name, O_RDWR)) < 0)
+ if (tmpfd < 0)
result = 0;
else {
if (my_chsize(tmpfd, len) < 0)
@@ -2157,13 +2149,13 @@ PP(pp_truncate)
PP(pp_ioctl)
{
dSP; dTARGET;
- SV *argsv = POPs;
+ SV * const argsv = POPs;
const unsigned int func = POPu;
const int optype = PL_op->op_type;
+ GV * const gv = (GV*)POPs;
+ IO * const io = gv ? GvIOn(gv) : Null(IO*);
char *s;
IV retval;
- GV *gv = (GV*)POPs;
- IO *io = gv ? GvIOn(gv) : 0;
if (!io || !argsv || !IoIFP(io)) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
@@ -2234,16 +2226,11 @@ PP(pp_flock)
#ifdef FLOCK
dSP; dTARGET;
I32 value;
- int argtype;
- GV *gv;
IO *io = NULL;
PerlIO *fp;
+ const int argtype = POPi;
+ GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
- argtype = POPi;
- if (MAXARG == 0)
- gv = PL_last_in_gv;
- else
- gv = (GV*)POPs;
if (gv && (io = GvIO(gv)))
fp = IoIFP(io);
else {
@@ -2273,16 +2260,13 @@ PP(pp_socket)
{
#ifdef HAS_SOCKET
dSP;
- GV *gv;
- register IO *io;
- int protocol = POPi;
- int type = POPi;
- int domain = POPi;
+ const int protocol = POPi;
+ const int type = POPi;
+ const int domain = POPi;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = gv ? GvIOn(gv) : NULL;
int fd;
- gv = (GV*)POPs;
- io = gv ? GvIOn(gv) : NULL;
-
if (!gv || !io) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
@@ -2326,19 +2310,15 @@ PP(pp_sockpair)
{
#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
dSP;
- GV *gv1;
- GV *gv2;
- register IO *io1;
- register IO *io2;
- int protocol = POPi;
- int type = POPi;
- int domain = POPi;
+ const int protocol = POPi;
+ const int type = POPi;
+ const int domain = POPi;
+ GV * const gv2 = (GV*)POPs;
+ GV * const gv1 = (GV*)POPs;
+ register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
+ register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
int fd[2];
- gv2 = (GV*)POPs;
- gv1 = (GV*)POPs;
- io1 = gv1 ? GvIOn(gv1) : NULL;
- io2 = gv2 ? GvIOn(gv2) : NULL;
if (!gv1 || !gv2 || !io1 || !io2) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
if (!gv1 || !io1)
@@ -2395,11 +2375,11 @@ PP(pp_bind)
extern void GETPRIVMODE();
extern void GETUSERMODE();
#endif
- SV *addrsv = POPs;
+ SV * const addrsv = POPs;
/* OK, so on what platform does bind modify addr? */
const char *addr;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
STRLEN len;
int bind_ok = 0;
#ifdef MPE
@@ -2451,10 +2431,10 @@ PP(pp_connect)
{
#ifdef HAS_SOCKET
dSP;
- SV *addrsv = POPs;
+ SV * const addrsv = POPs;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
const char *addr;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
STRLEN len;
if (!io || !IoIFP(io))
@@ -2481,9 +2461,9 @@ PP(pp_listen)
{
#ifdef HAS_SOCKET
dSP;
- int backlog = POPi;
- GV *gv = (GV*)POPs;
- register IO *io = gv ? GvIOn(gv) : NULL;
+ const int backlog = POPi;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = gv ? GvIOn(gv) : NULL;
if (!gv || !io || !IoIFP(io))
goto nuts;
@@ -2507,8 +2487,6 @@ PP(pp_accept)
{
#ifdef HAS_SOCKET
dSP; dTARGET;
- GV *ngv;
- GV *ggv;
register IO *nstio;
register IO *gstio;
char namebuf[MAXPATHLEN];
@@ -2517,11 +2495,10 @@ PP(pp_accept)
#else
Sock_size_t len = sizeof namebuf;
#endif
+ GV * const ggv = (GV*)POPs;
+ GV * const ngv = (GV*)POPs;
int fd;
- ggv = (GV*)POPs;
- ngv = (GV*)POPs;
-
if (!ngv)
goto badexit;
if (!ggv)
@@ -2578,9 +2555,9 @@ PP(pp_shutdown)
{
#ifdef HAS_SOCKET
dSP; dTARGET;
- int how = POPi;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ const int how = POPi;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io || !IoIFP(io))
goto nuts;
@@ -2602,24 +2579,15 @@ PP(pp_ssockopt)
{
#ifdef HAS_SOCKET
dSP;
- int optype = PL_op->op_type;
- SV *sv;
+ const int optype = PL_op->op_type;
+ SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(NEWSV(22, 257)) : POPs;
+ const unsigned int optname = (unsigned int) POPi;
+ const unsigned int lvl = (unsigned int) POPi;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
int fd;
- unsigned int optname;
- unsigned int lvl;
- GV *gv;
- register IO *io;
Sock_size_t len;
- if (optype == OP_GSOCKOPT)
- sv = sv_2mortal(NEWSV(22, 257));
- else
- sv = POPs;
- optname = (unsigned int) POPi;
- lvl = (unsigned int) POPi;
-
- gv = (GV*)POPs;
- io = GvIOn(gv);
if (!io || !IoIFP(io))
goto nuts;
@@ -2688,12 +2656,12 @@ PP(pp_getpeername)
{
#ifdef HAS_SOCKET
dSP;
- int optype = PL_op->op_type;
+ const int optype = PL_op->op_type;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
+ Sock_size_t len;
SV *sv;
int fd;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
- Sock_size_t len;
if (!io || !IoIFP(io))
goto nuts;
@@ -2784,7 +2752,7 @@ PP(pp_stat)
}
}
else {
- SV* sv = POPs;
+ SV* const sv = POPs;
if (SvTYPE(sv) == SVt_PVGV) {
gv = (GV*)sv;
goto do_fstat;
@@ -3414,7 +3382,7 @@ PP(pp_chroot)
{
#ifdef HAS_CHROOT
dSP; dTARGET;
- char *tmps = POPpx;
+ char * const tmps = POPpx;
TAINT_PROPER("chroot");
PUSHi( chroot(tmps) >= 0 );
RETURN;
@@ -3427,8 +3395,8 @@ PP(pp_rename)
{
dSP; dTARGET;
int anum;
- const char *tmps2 = POPpconstx;
- const char *tmps = SvPV_nolen_const(TOPs);
+ const char * const tmps2 = POPpconstx;
+ const char * const tmps = SvPV_nolen_const(TOPs);
TAINT_PROPER("rename");
#ifdef HAS_RENAME
anum = PerlLIO_rename(tmps, tmps2);
@@ -3465,8 +3433,8 @@ PP(pp_link)
# endif
{
- const char *tmps2 = POPpconstx;
- const char *tmps = SvPV_nolen_const(TOPs);
+ const char * const tmps2 = POPpconstx;
+ const char * const tmps = SvPV_nolen_const(TOPs);
TAINT_PROPER(PL_op_desc[op_type]);
result =
# if defined(HAS_LINK)
@@ -3632,18 +3600,13 @@ S_dooneliner(pTHX_ const char *cmd, const char *filename)
PP(pp_mkdir)
{
dSP; dTARGET;
- int mode;
#ifndef HAS_MKDIR
int oldumask;
#endif
STRLEN len;
const char *tmps;
bool copy = FALSE;
-
- if (MAXARG > 1)
- mode = POPi;
- else
- mode = 0777;
+ const int mode = (MAXARG > 1) ? POPi : 0777;
TRIMSLASHES(tmps,len,copy);
@@ -3686,9 +3649,9 @@ PP(pp_open_dir)
{
#if defined(Direntry_t) && defined(HAS_READDIR)
dSP;
- const char *dirname = POPpconstx;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ const char * const dirname = POPpconstx;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io)
goto nope;
@@ -3720,9 +3683,9 @@ PP(pp_readdir)
SV *sv;
const I32 gimme = GIMME;
- GV *gv = (GV *)POPs;
- register Direntry_t *dp;
- register IO *io = GvIOn(gv);
+ GV * const gv = (GV *)POPs;
+ register const Direntry_t *dp;
+ register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io))
goto nope;
@@ -3770,8 +3733,8 @@ PP(pp_telldir)
# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
long telldir (DIR *);
# endif
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io))
goto nope;
@@ -3791,9 +3754,9 @@ PP(pp_seekdir)
{
#if defined(HAS_SEEKDIR) || defined(seekdir)
dSP;
- long along = POPl;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ const long along = POPl;
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io))
goto nope;
@@ -3814,8 +3777,8 @@ PP(pp_rewinddir)
{
#if defined(HAS_REWINDDIR) || defined(rewinddir)
dSP;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io))
goto nope;
@@ -3835,8 +3798,8 @@ PP(pp_closedir)
{
#if defined(Direntry_t) && defined(HAS_READDIR)
dSP;
- GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ GV * const gv = (GV*)POPs;
+ register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io))
goto nope;
@@ -3868,7 +3831,6 @@ PP(pp_fork)
#ifdef HAS_FORK
dSP; dTARGET;
Pid_t childpid;
- GV *tmpgv;
EXTEND(SP, 1);
PERL_FLUSHALL_FOR_CHILD;
@@ -3876,7 +3838,8 @@ PP(pp_fork)
if (childpid < 0)
RETSETUNDEF;
if (!childpid) {
- if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
+ GV * const tmpgv = gv_fetchpv("$", TRUE, SVt_PV);
+ if (tmpgv) {
SvREADONLY_off(GvSV(tmpgv));
sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
SvREADONLY_on(GvSV(tmpgv));
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