#include "perl.h"
#include "keywords.h"
+#include "reentr.h"
+
/* variations on pp_null */
/* XXX I can't imagine anyone who doesn't have this actually _needs_
EXTEND(SP, maxarg);
if (SvMAGICAL(TARG)) {
U32 i;
- for (i=0; i < maxarg; i++) {
+ for (i=0; i < (U32)maxarg; i++) {
SV **svp = av_fetch((AV*)TARG, i, FALSE);
SP[i+1] = (svp) ? *svp : &PL_sv_undef;
}
Perl_croak(aTHX_ "Attempt to bless into a reference");
ptr = SvPV(ssv,len);
if (ckWARN(WARN_MISC) && len == 0)
- Perl_warner(aTHX_ WARN_MISC,
+ Perl_warner(aTHX_ packWARN(WARN_MISC),
"Explicit blessing to '' (assuming package main)");
stash = gv_stashpvn(ptr, len, TRUE);
}
break;
case SVt_PVCV:
if (ckWARN(WARN_MISC) && cv_const_sv((CV*)sv))
- Perl_warner(aTHX_ WARN_MISC, "Constant subroutine %s undefined",
+ Perl_warner(aTHX_ packWARN(WARN_MISC), "Constant subroutine %s undefined",
CvANON((CV*)sv) ? "(anonymous)" : GvENAME(CvGV((CV*)sv)));
/* FALL THROUGH */
case SVt_PVFM:
PP(pp_pow)
{
dSP; dATARGET; tryAMAGICbin(pow,opASSIGN);
+#ifdef PERL_PRESERVE_IVUV
+ /* ** is implemented with pow. pow is floating point. Perl programmers
+ write 2 ** 31 and expect it to be 2147483648
+ pow never made any guarantee to deliver a result to 53 (or whatever)
+ bits of accuracy. Which is unfortunate, as perl programmers expect it
+ to, and on some platforms (eg Irix with long doubles) it doesn't in
+ a very visible case. (2 ** 31, which a regression test uses)
+ So we'll implement power-of-2 ** +ve integer with multiplies, to avoid
+ these problems. */
{
- dPOPTOPnnrl;
- SETn( Perl_pow( left, right) );
- RETURN;
+ SvIV_please(TOPm1s);
+ if (SvIOK(TOPm1s)) {
+ bool baseuok = SvUOK(TOPm1s);
+ UV baseuv;
+
+ if (baseuok) {
+ baseuv = SvUVX(TOPm1s);
+ } else {
+ IV iv = SvIVX(TOPm1s);
+ if (iv >= 0) {
+ baseuv = iv;
+ baseuok = TRUE; /* effectively it's a UV now */
+ } else {
+ baseuv = -iv; /* abs, baseuok == false records sign */
+ }
+ }
+ SvIV_please(TOPs);
+ if (SvIOK(TOPs)) {
+ UV power;
+
+ if (SvUOK(TOPs)) {
+ power = SvUVX(TOPs);
+ } else {
+ IV iv = SvIVX(TOPs);
+ if (iv >= 0) {
+ power = iv;
+ } else {
+ goto float_it; /* Can't do negative powers this way. */
+ }
+ }
+ /* now we have integer ** positive integer.
+ foo & (foo - 1) is zero only for a power of 2. */
+ if (!(baseuv & (baseuv - 1))) {
+ /* We are raising power-of-2 to postive integer.
+ The logic here will work for any base (even non-integer
+ bases) but it can be less accurate than
+ pow (base,power) or exp (power * log (base)) when the
+ intermediate values start to spill out of the mantissa.
+ With powers of 2 we know this can't happen.
+ And powers of 2 are the favourite thing for perl
+ programmers to notice ** not doing what they mean. */
+ NV result = 1.0;
+ NV base = baseuok ? baseuv : -(NV)baseuv;
+ int n = 0;
+
+ /* The logic is this.
+ x ** n === x ** m1 * x ** m2 where n = m1 + m2
+ so as 42 is 32 + 8 + 2
+ x ** 42 can be written as
+ x ** 32 * x ** 8 * x ** 2
+ I can calculate x ** 2, x ** 4, x ** 8 etc trivially:
+ x ** 2n is x ** n * x ** n
+ So I loop round, squaring x each time
+ (x, x ** 2, x ** 4, x ** 8) and multiply the result
+ by the x-value whenever that bit is set in the power.
+ To finish as soon as possible I zero bits in the power
+ when I've done them, so that power becomes zero when
+ I clear the last bit (no more to do), and the loop
+ terminates. */
+ for (; power; base *= base, n++) {
+ /* Do I look like I trust gcc with long longs here?
+ Do I hell. */
+ UV bit = (UV)1 << (UV)n;
+ if (power & bit) {
+ result *= base;
+ /* Only bother to clear the bit if it is set. */
+ power &= ~bit;
+ /* Avoid squaring base again if we're done. */
+ if (power == 0) break;
+ }
+ }
+ SP--;
+ SETn( result );
+ RETURN;
+ }
+ }
+ }
+ }
+ float_it:
+#endif
+ {
+ dPOPTOPnnrl;
+ SETn( Perl_pow( left, right) );
+ RETURN;
}
}
{
dSP; dATARGET; tryAMAGICbin(div,opASSIGN);
/* Only try to do UV divide first
- if ((SLOPPYDIVIDE is true) or
+ if ((SLOPPYDIVIDE is true) or
(PERL_PRESERVE_IVUV is true and one or both SV is a UV too large
to preserve))
The assumption is that it is better to use floating point divide
}
/* 2s complement assumption */
if (result <= (UV)IV_MIN)
- SETi( -result );
+ SETi( -(IV)result );
else {
/* It's exact but too negative for IV. */
SETn( -(NV)result );
buv = (UV)-biv;
}
/* ?uvok if value is >= 0. basically, flagged as UV if it's +ve,
- else "IV" now, independant of how it came in.
+ else "IV" now, independent of how it came in.
if a, b represents positive, A, B negative, a maps to -A etc
a - b => (a - b)
A - b => -(a + b)
u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1];
#else
# ifdef HAS_GETTIMEOFDAY
- gettimeofday(&when,(struct timezone *) 0);
+ PerlProc_gettimeofday(&when,NULL);
u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec;
# else
(void)time(&when);
# if defined(HAS_MODFL) || defined(LONG_DOUBLE_EQUALS_DOUBLE)
# ifdef HAS_MODFL_POW32_BUG
/* some versions of glibc split (i + d) into (i-1, d+1) for 2^32 <= i < 2^64 */
- {
+ {
NV offset = Perl_modf(value, &value);
(void)Perl_modf(offset, &offset);
value += offset;
/* If Unicode, try to downgrade
* If not possible, croak. */
SV* tsv = sv_2mortal(newSVsv(sv));
-
+
SvUTF8_on(tsv);
sv_utf8_downgrade(tsv, FALSE);
tmps = SvPVX(tsv);
/* If Unicode, try to downgrade
* If not possible, croak. */
SV* tsv = sv_2mortal(newSVsv(sv));
-
+
SvUTF8_on(tsv);
sv_utf8_downgrade(tsv, FALSE);
tmps = SvPVX(tsv);
if (lvalue || repl)
Perl_croak(aTHX_ "substr outside of string");
if (ckWARN(WARN_SUBSTR))
- Perl_warner(aTHX_ WARN_SUBSTR, "substr outside of string");
+ Perl_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string");
RETPUSHUNDEF;
}
else {
STRLEN n_a;
SvPV_force(sv,n_a);
if (ckWARN(WARN_SUBSTR))
- Perl_warner(aTHX_ WARN_SUBSTR,
+ Perl_warner(aTHX_ packWARN(WARN_SUBSTR),
"Attempt to use reference as lvalue in substr");
}
if (SvOK(sv)) /* is it defined ? */
sv_pos_u2b(big, &offset, 0);
if (offset < 0)
offset = 0;
- else if (offset > biglen)
+ else if (offset > (I32)biglen)
offset = biglen;
if (!(tmps2 = fbm_instr((unsigned char*)tmps + offset,
(unsigned char*)tmps + biglen, little, 0)))
}
if (offset < 0)
offset = 0;
- else if (offset > blen)
+ else if (offset > (I32)blen)
offset = blen;
if (!(tmps2 = rninstr(tmps, tmps + offset,
tmps2, tmps2 + llen)))
U8 *s = (U8*)SvPVx(argsv, len);
SV *tmpsv;
- if (PL_encoding && !DO_UTF8(argsv)) {
+ if (PL_encoding && SvPOK(argsv) && !DO_UTF8(argsv)) {
tmpsv = sv_2mortal(newSVsv(argsv));
- s = (U8*)Perl_sv_recode_to_utf8(aTHX_ tmpsv, PL_encoding);
+ s = (U8*)sv_recode_to_utf8(tmpsv, PL_encoding);
argsv = tmpsv;
}
- XPUSHu(DO_UTF8(argsv) ? utf8_to_uvchr(s, 0) : (*s & 0xff));
-
+ XPUSHu(DO_UTF8(argsv) ?
+ utf8n_to_uvchr(s, UTF8_MAXLEN, 0, UTF8_ALLOW_ANYUV) :
+ (*s & 0xff));
+
RETURN;
}
(void)SvUPGRADE(TARG,SVt_PV);
if (value > 255 && !IN_BYTES) {
- SvGROW(TARG, UNISKIP(value)+1);
- tmps = (char*)uvchr_to_utf8_flags((U8*)SvPVX(TARG), value,
- UNICODE_ALLOW_SUPER);
+ SvGROW(TARG, (STRLEN)UNISKIP(value)+1);
+ tmps = (char*)uvchr_to_utf8_flags((U8*)SvPVX(TARG), value, 0);
SvCUR_set(TARG, tmps - SvPVX(TARG));
*tmps = '\0';
(void)SvPOK_only(TARG);
SvGROW(TARG,2);
SvCUR_set(TARG, 1);
tmps = SvPVX(TARG);
- *tmps++ = value;
+ *tmps++ = (char)value;
*tmps = '\0';
(void)SvPOK_only(TARG);
if (PL_encoding)
- Perl_sv_recode_to_utf8(aTHX_ TARG, PL_encoding);
+ sv_recode_to_utf8(TARG, PL_encoding);
XPUSHs(TARG);
RETURN;
}
# else
sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, n_a)));
# endif
+ SETs(TARG);
+ RETURN;
#else
DIE(aTHX_
"The crypt() function is unimplemented due to excessive paranoia.");
#endif
- SETs(TARG);
- RETURN;
}
PP(pp_ucfirst)
tend = uvchr_to_utf8(tmpbuf, uv);
- if (!SvPADTMP(sv) || tend - tmpbuf != ulen || SvREADONLY(sv)) {
+ if (!SvPADTMP(sv) || (STRLEN)(tend - tmpbuf) != ulen || SvREADONLY(sv)) {
dTARGET;
sv_setpvn(TARG, (char*)tmpbuf, tend - tmpbuf);
sv_catpvn(TARG, (char*)(s + ulen), slen - ulen);
SETs(TARG);
}
else {
+ STRLEN nchar = utf8_length(s, s + len);
+
(void)SvUPGRADE(TARG, SVt_PV);
- SvGROW(TARG, (len * 2) + 1);
+ SvGROW(TARG, (nchar * UTF8_MAXLEN_UCLC) + 1);
(void)SvPOK_only(TARG);
d = (U8*)SvPVX(TARG);
send = s + len;
SETs(TARG);
}
else {
+ STRLEN nchar = utf8_length(s, s + len);
+
(void)SvUPGRADE(TARG, SVt_PV);
- SvGROW(TARG, (len * 2) + 1);
+ SvGROW(TARG, (nchar * UTF8_MAXLEN_UCLC) + 1);
(void)SvPOK_only(TARG);
d = (U8*)SvPVX(TARG);
send = s + len;
EXTEND(SP, 2);
if (entry) {
- PUSHs(hv_iterkeysv(entry)); /* won't clobber stack_sp */
+ SV* sv = hv_iterkeysv(entry);
+ PUSHs(sv); /* won't clobber stack_sp */
if (gimme == G_ARRAY) {
SV *val;
PUTBACK;
register HV *hv = (HV*)POPs;
register I32 lval = (PL_op->op_flags & OPf_MOD || LVRET);
I32 realhv = (SvTYPE(hv) == SVt_PVHV);
+ bool localizing = PL_op->op_private & OPpLVAL_INTRO ? TRUE : FALSE;
+ bool other_magic = FALSE;
+
+ if (localizing) {
+ MAGIC *mg;
+ HV *stash;
- if (!realhv && PL_op->op_private & OPpLVAL_INTRO)
+ other_magic = mg_find((SV*)hv, PERL_MAGIC_env) ||
+ ((mg = mg_find((SV*)hv, PERL_MAGIC_tied))
+ /* Try to preserve the existenceness of a tied hash
+ * element by using EXISTS and DELETE if possible.
+ * Fallback to FETCH and STORE otherwise */
+ && (stash = SvSTASH(SvRV(SvTIED_obj((SV*)hv, mg))))
+ && gv_fetchmethod_autoload(stash, "EXISTS", TRUE)
+ && gv_fetchmethod_autoload(stash, "DELETE", TRUE));
+ }
+
+ if (!realhv && localizing)
DIE(aTHX_ "Can't localize pseudo-hash element");
if (realhv || SvTYPE(hv) == SVt_PVAV) {
while (++MARK <= SP) {
SV *keysv = *MARK;
SV **svp;
- I32 preeminent = SvRMAGICAL(hv) ? 1 :
- realhv ? hv_exists_ent(hv, keysv, 0)
- : avhv_exists_ent((AV*)hv, keysv, 0);
+ bool preeminent = FALSE;
+
+ if (localizing) {
+ preeminent = SvRMAGICAL(hv) && !other_magic ? 1 :
+ realhv ? hv_exists_ent(hv, keysv, 0)
+ : avhv_exists_ent((AV*)hv, keysv, 0);
+ }
+
if (realhv) {
HE *he = hv_fetch_ent(hv, keysv, lval, 0);
svp = he ? &HeVAL(he) : 0;
STRLEN n_a;
DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a));
}
- if (PL_op->op_private & OPpLVAL_INTRO) {
+ if (localizing) {
if (preeminent)
save_helem(hv, keysv, svp);
else {
if (MARK < SP)
sv_setsv(val, *++MARK);
else if (ckWARN(WARN_MISC))
- Perl_warner(aTHX_ WARN_MISC, "Odd number of elements in anonymous hash");
+ Perl_warner(aTHX_ packWARN(WARN_MISC), "Odd number of elements in anonymous hash");
(void)hv_store_ent(hv,key,val,0);
}
SP = ORIGMARK;
offset = 0;
length = AvMAX(ary) + 1;
}
- if (offset > AvFILLp(ary) + 1)
+ if (offset > AvFILLp(ary) + 1) {
+ if (ckWARN(WARN_MISC))
+ Perl_warner(aTHX_ packWARN(WARN_MISC), "splice() offset past end of array" );
offset = AvFILLp(ary) + 1;
+ }
after = AvFILLp(ary) + 1 - (offset + length);
if (after < 0) { /* not that much array */
length += after; /* offset+length now in array */
while (down > up) {
tmp = *up;
*up++ = *down;
- *down-- = tmp;
+ *down-- = (char)tmp;
}
}
}
while (down > up) {
tmp = *up;
*up++ = *down;
- *down-- = tmp;
+ *down-- = (char)tmp;
}
(void)SvPOK_only_UTF8(TARG);
}
(void)SvUTF8_on(dstr);
XPUSHs(dstr);
if (rx->nparens) {
- for (i = 1; i <= rx->nparens; i++) {
+ for (i = 1; i <= (I32)rx->nparens; i++) {
s = rx->startp[i] + orig;
m = rx->endp[i] + orig;
iters++;
}
else if (!origlimit) {
- while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0))
- iters--, SP--;
+ while (iters > 0 && (!TOPs || !SvANY(TOPs) || SvCUR(TOPs) == 0)) {
+ if (TOPs && !make_mortal)
+ sv_2mortal(TOPs);
+ iters--;
+ SP--;
+ }
}
if (realarray) {
dSP;
dTOPss;
SV *retsv = sv;
-#ifdef USE_5005THREADS
- sv_lock(sv);
-#endif /* USE_5005THREADS */
-#ifdef USE_ITHREADS
- shared_sv *ssv = Perl_sharedsv_find(aTHX_ sv);
- if(ssv)
- Perl_sharedsv_lock(aTHX_ ssv);
-#endif /* USE_ITHREADS */
+ SvLOCK(sv);
if (SvTYPE(retsv) == SVt_PVAV || SvTYPE(retsv) == SVt_PVHV
|| SvTYPE(retsv) == SVt_PVCV) {
retsv = refto(retsv);
https://perl5.git.perl.org / perl5.git / blobdiff