#undef PERL_EFF_ACCESS_W_OK
#undef PERL_EFF_ACCESS_X_OK
+/* AIX 5.2 and below use mktime for localtime, and defines the edge case
+ * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
+ * available in the 32bit environment, which could warrant Configure
+ * checks in the future.
+ */
+#ifdef _AIX
+#define LOCALTIME_EDGECASE_BROKEN
+#endif
+
/* F_OK unused: if stat() cannot find it... */
#if !defined(PERL_EFF_ACCESS_R_OK) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
{
dSP; dTARGET;
PerlIO *fp;
- const char *tmps = POPpconstx;
+ const char * const tmps = POPpconstx;
const I32 gimme = GIMME_V;
const char *mode = "r";
if (gimme == G_VOID) {
char tmpbuf[256];
while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
- /*SUPPRESS 530*/
;
}
else if (gimme == G_SCALAR) {
PL_rs = &PL_sv_undef;
sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
- /*SUPPRESS 530*/
;
LEAVE;
XPUSHs(TARG);
SvTAINTED_on(TARG);
}
else {
- SV *sv;
-
for (;;) {
- sv = NEWSV(56, 79);
+ SV * const sv = NEWSV(56, 79);
if (sv_gets(sv, fp, 0) == Nullch) {
SvREFCNT_dec(sv);
break;
}
tmps = SvPV_const(tmpsv, len);
if ((!tmps || !len) && PL_errgv) {
- SV *error = ERRSV;
+ SV * const error = ERRSV;
SvUPGRADE(error, SVt_PV);
if (SvPOK(error) && SvCUR(error))
sv_catpv(error, "\t...caught");
RETPUSHYES;
if ((mg = SvTIED_mg(sv, how))) {
- SV *obj = SvRV(SvTIED_obj(sv, mg));
+ SV * const obj = SvRV(SvTIED_obj(sv, mg));
GV *gv;
CV *cv = NULL;
if (obj) {
PP(pp_tied)
{
dSP;
- MAGIC *mg;
+ const MAGIC *mg;
SV *sv = POPs;
const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
PP(pp_dbmopen)
{
dVAR; dSP;
- HV *hv;
dPOPPOPssrl;
HV* stash;
GV *gv;
SV *sv;
- hv = (HV*)POPs;
+ HV * const hv = (HV*)POPs;
sv = sv_mortalcopy(&PL_sv_no);
sv_setpv(sv, "AnyDBM_File");
if (! hv)
XPUSHs(&PL_sv_undef);
else {
- GV **gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
+ GV ** const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
if (gvp && *gvp == egv) {
gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
XPUSHTARG;
PP(pp_getc)
{
dVAR; dSP; dTARGET;
- GV *gv;
IO *io = NULL;
MAGIC *mg;
-
- if (MAXARG == 0)
- gv = PL_stdingv;
- else
- gv = (GV*)POPs;
+ GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
PP(pp_leavewrite)
{
dVAR; dSP;
- GV *gv = cxstack[cxstack_ix].blk_sub.gv;
- register IO *io = GvIOp(gv);
- PerlIO *ofp = IoOFP(io);
+ GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
+ register IO * const io = GvIOp(gv);
+ PerlIO * const ofp = IoOFP(io);
PerlIO *fp;
SV **newsp;
I32 gimme;
register PERL_CONTEXT *cx;
+ PERL_UNUSED_VAR(newsp);
+ PERL_UNUSED_VAR(gimme);
DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
(long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
CV *cv;
if (!IoTOP_GV(io)) {
GV *topgv;
- SV *topname;
if (!IoTOP_NAME(io)) {
+ SV *topname;
if (!IoFMT_NAME(io))
IoFMT_NAME(io) = savepv(GvNAME(gv));
topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
PP(pp_sysopen)
{
dSP;
- GV *gv;
- SV *sv;
- const char *tmps;
- STRLEN len;
const int perm = (MAXARG > 3) ? POPi : 0666;
const int mode = POPi;
-
- sv = POPs;
- gv = (GV *)POPs;
+ SV * const sv = POPs;
+ GV * const gv = (GV *)POPs;
+ STRLEN len;
/* Need TIEHANDLE method ? */
-
- tmps = SvPV_const(sv, len);
+ const char * const tmps = SvPV_const(sv, len);
/* FIXME? do_open should do const */
if (do_open(gv, (char*)tmps, len, TRUE, mode, perm, Nullfp)) {
IoLINES(GvIOp(gv)) = 0;
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
int offset;
- GV *gv;
IO *io;
char *buffer;
SSize_t length;
Sock_size_t bufsize;
SV *bufsv;
STRLEN blen;
- MAGIC *mg;
int fp_utf8;
int buffer_utf8;
SV *read_target;
STRLEN charskip = 0;
STRLEN skip = 0;
- gv = (GV*)*++MARK;
+ GV * const gv = (GV*)*++MARK;
if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
- && gv && (io = GvIO(gv))
- && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
+ && gv && (io = GvIO(gv)) )
{
- SV *sv;
-
- PUSHMARK(MARK-1);
- *MARK = SvTIED_obj((SV*)io, mg);
- ENTER;
- call_method("READ", G_SCALAR);
- LEAVE;
- SPAGAIN;
- sv = POPs;
- SP = ORIGMARK;
- PUSHs(sv);
- RETURN;
+ const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
+ if (mg) {
+ SV *sv;
+ PUSHMARK(MARK-1);
+ *MARK = SvTIED_obj((SV*)io, mg);
+ ENTER;
+ call_method("READ", G_SCALAR);
+ LEAVE;
+ SPAGAIN;
+ sv = POPs;
+ SP = ORIGMARK;
+ PUSHs(sv);
+ RETURN;
+ }
}
if (!gv)
if (childpid < 0)
RETSETUNDEF;
if (!childpid) {
- /*SUPPRESS 560*/
if ((tmpgv = gv_fetchpv("$", TRUE, SVt_PV))) {
SvREADONLY_off(GvSV(tmpgv));
sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
return pp_gmtime();
}
+#ifdef LOCALTIME_EDGECASE_BROKEN
+static struct tm *S_my_localtime (Time_t *tp)
+{
+ auto time_t T;
+ auto struct tm *P;
+
+ /* No workarounds in the valid range */
+ if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
+ return (localtime (tp));
+
+ /* This edge case is to workaround the undefined behaviour, where the
+ * TIMEZONE makes the time go beyond the defined range.
+ * gmtime (0x7fffffff) => 2038-01-19 03:14:07
+ * If there is a negative offset in TZ, like MET-1METDST, some broken
+ * implementations of localtime () (like AIX 5.2) barf with bogus
+ * return values:
+ * 0x7fffffff gmtime 2038-01-19 03:14:07
+ * 0x7fffffff localtime 1901-12-13 21:45:51
+ * 0x7fffffff mylocaltime 2038-01-19 04:14:07
+ * 0x3c19137f gmtime 2001-12-13 20:45:51
+ * 0x3c19137f localtime 2001-12-13 21:45:51
+ * 0x3c19137f mylocaltime 2001-12-13 21:45:51
+ * Given that legal timezones are typically between GMT-12 and GMT+12
+ * we turn back the clock 23 hours before calling the localtime
+ * function, and add those to the return value. This will never cause
+ * day wrapping problems, since the edge case is Jan *19*
+ */
+ T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
+ P = localtime (&T);
+ P->tm_hour += 23;
+ if (P->tm_hour >= 24) {
+ P->tm_hour -= 24;
+ P->tm_mday++;
+ }
+ return (P);
+} /* S_my_localtime */
+#endif
+
PP(pp_gmtime)
{
dSP;
#endif
if (PL_op->op_type == OP_LOCALTIME)
+#ifdef LOCALTIME_EDGECASE_BROKEN
+ tmbuf = S_my_localtime(&when);
+#else
tmbuf = localtime(&when);
+#endif
else
tmbuf = gmtime(&when);
projects / p5sagit/p5-mst-13.2.git / blobdiff