diff options
Diffstat (limited to 'contrib/perl5/pp.c')
-rw-r--r-- | contrib/perl5/pp.c | 172 |
1 files changed, 129 insertions, 43 deletions
diff --git a/contrib/perl5/pp.c b/contrib/perl5/pp.c index 35b1552..1f62886 100644 --- a/contrib/perl5/pp.c +++ b/contrib/perl5/pp.c @@ -1,6 +1,6 @@ /* pp.c * - * Copyright (c) 1991-1997, Larry Wall + * Copyright (c) 1991-1999, Larry Wall * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. @@ -105,9 +105,9 @@ typedef unsigned UBW; static void doencodes _((SV* sv, char* s, I32 len)); static SV* refto _((SV* sv)); static U32 seed _((void)); +static bool srand_called = FALSE; #endif -static bool srand_called = FALSE; /* variations on pp_null */ @@ -224,6 +224,7 @@ PP(pp_rv2gv) else { if (SvTYPE(sv) != SVt_PVGV) { char *sym; + STRLEN n_a; if (SvGMAGICAL(sv)) { mg_get(sv); @@ -238,7 +239,7 @@ PP(pp_rv2gv) warn(warn_uninit); RETSETUNDEF; } - sym = SvPV(sv, PL_na); + sym = SvPV(sv, n_a); if (PL_op->op_private & HINT_STRICT_REFS) DIE(no_symref, sym, "a symbol"); sv = (SV*)gv_fetchpv(sym, TRUE, SVt_PVGV); @@ -267,6 +268,7 @@ PP(pp_rv2sv) else { GV *gv = (GV*)sv; char *sym; + STRLEN n_a; if (SvTYPE(gv) != SVt_PVGV) { if (SvGMAGICAL(sv)) { @@ -282,7 +284,7 @@ PP(pp_rv2sv) warn(warn_uninit); RETSETUNDEF; } - sym = SvPV(sv, PL_na); + sym = SvPV(sv, n_a); if (PL_op->op_private & HINT_STRICT_REFS) DIE(no_symref, sym, "a SCALAR"); gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PV); @@ -533,9 +535,10 @@ PP(pp_gelem) SV *tmpRef; char *elem; djSP; + STRLEN n_a; sv = POPs; - elem = SvPV(sv, PL_na); + elem = SvPV(sv, n_a); gv = (GV*)POPs; tmpRef = Nullsv; sv = Nullsv; @@ -716,11 +719,11 @@ PP(pp_defined) RETPUSHNO; switch (SvTYPE(sv)) { case SVt_PVAV: - if (AvMAX(sv) >= 0 || SvGMAGICAL(sv)) + if (AvMAX(sv) >= 0 || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv,'P'))) RETPUSHYES; break; case SVt_PVHV: - if (HvARRAY(sv) || SvGMAGICAL(sv)) + if (HvARRAY(sv) || SvGMAGICAL(sv) || (SvRMAGICAL(sv) && mg_find(sv,'P'))) RETPUSHYES; break; case SVt_PVCV: @@ -751,8 +754,11 @@ PP(pp_undef) RETPUSHUNDEF; if (SvTHINKFIRST(sv)) { - if (SvREADONLY(sv)) - RETPUSHUNDEF; + if (SvREADONLY(sv)) { + dTHR; + if (PL_curcop != &PL_compiling) + croak(no_modify); + } if (SvROK(sv)) sv_unref(sv); } @@ -1634,21 +1640,50 @@ seed(void) #define SEED_C5 26107 dTHR; +#ifndef PERL_NO_DEV_RANDOM + int fd; +#endif U32 u; #ifdef VMS # include <starlet.h> /* when[] = (low 32 bits, high 32 bits) of time since epoch * in 100-ns units, typically incremented ever 10 ms. */ unsigned int when[2]; +#else +# ifdef HAS_GETTIMEOFDAY + struct timeval when; +# else + Time_t when; +# endif +#endif + +/* This test is an escape hatch, this symbol isn't set by Configure. */ +#ifndef PERL_NO_DEV_RANDOM +#ifndef PERL_RANDOM_DEVICE + /* /dev/random isn't used by default because reads from it will block + * if there isn't enough entropy available. You can compile with + * PERL_RANDOM_DEVICE to it if you'd prefer Perl to block until there + * is enough real entropy to fill the seed. */ +# define PERL_RANDOM_DEVICE "/dev/urandom" +#endif + fd = PerlLIO_open(PERL_RANDOM_DEVICE, 0); + if (fd != -1) { + if (PerlLIO_read(fd, &u, sizeof u) != sizeof u) + u = 0; + PerlLIO_close(fd); + if (u) + return u; + } +#endif + +#ifdef VMS _ckvmssts(sys$gettim(when)); u = (U32)SEED_C1 * when[0] + (U32)SEED_C2 * when[1]; #else # ifdef HAS_GETTIMEOFDAY - struct timeval when; gettimeofday(&when,(struct timezone *) 0); u = (U32)SEED_C1 * when.tv_sec + (U32)SEED_C2 * when.tv_usec; # else - Time_t when; (void)time(&when); u = (U32)SEED_C1 * when; # endif @@ -1760,8 +1795,9 @@ PP(pp_hex) djSP; dTARGET; char *tmps; I32 argtype; + STRLEN n_a; - tmps = POPp; + tmps = POPpx; XPUSHu(scan_hex(tmps, 99, &argtype)); RETURN; } @@ -1772,8 +1808,9 @@ PP(pp_oct) UV value; I32 argtype; char *tmps; + STRLEN n_a; - tmps = POPp; + tmps = POPpx; while (*tmps && isSPACE(*tmps)) tmps++; if (*tmps == '0') @@ -1866,7 +1903,8 @@ PP(pp_substr) if (lvalue) { /* it's an lvalue! */ if (!SvGMAGICAL(sv)) { if (SvROK(sv)) { - SvPV_force(sv,PL_na); + STRLEN n_a; + SvPV_force(sv,n_a); if (PL_dowarn) warn("Attempt to use reference as lvalue in substr"); } @@ -2067,13 +2105,14 @@ PP(pp_ord) djSP; dTARGET; I32 value; char *tmps; + STRLEN n_a; #ifndef I286 - tmps = POPp; + tmps = POPpx; value = (I32) (*tmps & 255); #else I32 anum; - tmps = POPp; + tmps = POPpx; anum = (I32) *tmps; value = (I32) (anum & 255); #endif @@ -2100,12 +2139,13 @@ PP(pp_chr) PP(pp_crypt) { djSP; dTARGET; dPOPTOPssrl; + STRLEN n_a; #ifdef HAS_CRYPT - char *tmps = SvPV(left, PL_na); + char *tmps = SvPV(left, n_a); #ifdef FCRYPT - sv_setpv(TARG, fcrypt(tmps, SvPV(right, PL_na))); + sv_setpv(TARG, fcrypt(tmps, SvPV(right, n_a))); #else - sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, PL_na))); + sv_setpv(TARG, PerlProc_crypt(tmps, SvPV(right, n_a))); #endif #else DIE( @@ -2120,6 +2160,7 @@ PP(pp_ucfirst) djSP; SV *sv = TOPs; register char *s; + STRLEN n_a; if (!SvPADTMP(sv)) { dTARGET; @@ -2127,7 +2168,7 @@ PP(pp_ucfirst) sv = TARG; SETs(sv); } - s = SvPV_force(sv, PL_na); + s = SvPV_force(sv, n_a); if (*s) { if (PL_op->op_private & OPpLOCALE) { TAINT; @@ -2146,6 +2187,7 @@ PP(pp_lcfirst) djSP; SV *sv = TOPs; register char *s; + STRLEN n_a; if (!SvPADTMP(sv)) { dTARGET; @@ -2153,7 +2195,7 @@ PP(pp_lcfirst) sv = TARG; SETs(sv); } - s = SvPV_force(sv, PL_na); + s = SvPV_force(sv, n_a); if (*s) { if (PL_op->op_private & OPpLOCALE) { TAINT; @@ -2428,8 +2470,10 @@ PP(pp_hslice) svp = avhv_fetch_ent((AV*)hv, keysv, lval, 0); } if (lval) { - if (!svp || *svp == &PL_sv_undef) - DIE(no_helem, SvPV(keysv, PL_na)); + if (!svp || *svp == &PL_sv_undef) { + STRLEN n_a; + DIE(no_helem, SvPV(keysv, n_a)); + } if (PL_op->op_private & OPpLVAL_INTRO) save_helem(hv, keysv, svp); } @@ -2561,8 +2605,8 @@ PP(pp_splice) SV **tmparyval = 0; MAGIC *mg; - if (SvRMAGICAL(ary) && (mg = mg_find((SV*)ary,'P'))) { - *MARK-- = mg->mg_obj; + if (mg = SvTIED_mg((SV*)ary, 'P')) { + *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; @@ -2759,8 +2803,8 @@ PP(pp_push) register SV *sv = &PL_sv_undef; MAGIC *mg; - if (SvRMAGICAL(ary) && (mg = mg_find((SV*)ary,'P'))) { - *MARK-- = mg->mg_obj; + if (mg = SvTIED_mg((SV*)ary, 'P')) { + *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; @@ -2815,8 +2859,8 @@ PP(pp_unshift) register I32 i = 0; MAGIC *mg; - if (SvRMAGICAL(ary) && (mg = mg_find((SV*)ary,'P'))) { - *MARK-- = mg->mg_obj; + if (mg = SvTIED_mg((SV*)ary, 'P')) { + *MARK-- = SvTIED_obj((SV*)ary, mg); PUSHMARK(MARK); PUTBACK; ENTER; @@ -2910,7 +2954,9 @@ mul128(SV *sv, U8 m) static const char uuemap[] = "`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"; +#ifndef PERL_OBJECT static char uudmap[256]; /* Initialised on first use */ +#endif #if 'I' == 73 && 'J' == 74 /* On an ASCII/ISO kind of system */ #define ISUUCHAR(ch) ((ch) >= ' ' && (ch) < 'a') @@ -2959,13 +3005,15 @@ PP(pp_unpack) I32 checksum = 0; register U32 culong; double cdouble; +#ifndef PERL_OBJECT static char* bitcount = 0; +#endif int commas = 0; if (gimme != G_ARRAY) { /* arrange to do first one only */ /*SUPPRESS 530*/ for (patend = pat; !isALPHA(*patend) || *patend == 'x'; patend++) ; - if (strchr("aAbBhHP", *patend) || *pat == '%') { + if (strchr("aAZbBhHP", *patend) || *pat == '%') { patend++; while (isDIGIT(*patend) || *patend == '*') patend++; @@ -3023,6 +3071,7 @@ PP(pp_unpack) s += len; break; case 'A': + case 'Z': case 'a': if (len > strend - s) len = strend - s; @@ -3031,12 +3080,19 @@ PP(pp_unpack) sv = NEWSV(35, len); sv_setpvn(sv, s, len); s += len; - if (datumtype == 'A') { + if (datumtype == 'A' || datumtype == 'Z') { aptr = s; /* borrow register */ - s = SvPVX(sv) + len - 1; - while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) - s--; - *++s = '\0'; + if (datumtype == 'Z') { /* 'Z' strips stuff after first null */ + s = SvPVX(sv); + while (*s) + s++; + } + else { /* 'A' strips both nulls and spaces */ + s = SvPVX(sv) + len - 1; + while (s >= SvPVX(sv) && (!*s || isSPACE(*s))) + s--; + *++s = '\0'; + } SvCUR_set(sv, s - SvPVX(sv)); s = aptr; /* unborrow register */ } @@ -3195,6 +3251,10 @@ PP(pp_unpack) if (checksum) { while (len-- > 0) { COPY16(s, &ashort); +#if SHORTSIZE > SIZE16 + if (ashort > 32767) + ashort -= 65536; +#endif s += SIZE16; culong += ashort; } @@ -3204,6 +3264,10 @@ PP(pp_unpack) EXTEND_MORTAL(len); while (len-- > 0) { COPY16(s, &ashort); +#if SHORTSIZE > SIZE16 + if (ashort > 32767) + ashort -= 65536; +#endif s += SIZE16; sv = NEWSV(38, 0); sv_setiv(sv, (IV)ashort); @@ -3306,6 +3370,17 @@ PP(pp_unpack) Copy(s, &auint, 1, unsigned int); s += sizeof(unsigned int); sv = NEWSV(41, 0); +#ifdef __osf__ + /* Without the dummy below unpack("I", pack("I",0xFFFFFFFF)) + * returns 1.84467440737096e+19 instead of 0xFFFFFFFF for + * DEC C V5.8-009 on Digital UNIX V4.0 (Rev. 1091) (aka V4.0D) + * with optimization turned on. + * (DEC C V5.2-040 on Digital UNIX V4.0 (Rev. 564) (aka V4.0B) + * does not have this problem even with -O4) + */ + (auint) ? + sv_setuv(sv, (UV)auint) : +#endif sv_setuv(sv, (UV)auint); PUSHs(sv_2mortal(sv)); } @@ -3318,6 +3393,10 @@ PP(pp_unpack) if (checksum) { while (len-- > 0) { COPY32(s, &along); +#if LONGSIZE > SIZE32 + if (along > 2147483647) + along -= 4294967296; +#endif s += SIZE32; if (checksum > 32) cdouble += (double)along; @@ -3330,6 +3409,10 @@ PP(pp_unpack) EXTEND_MORTAL(len); while (len-- > 0) { COPY32(s, &along); +#if LONGSIZE > SIZE32 + if (along > 2147483647) + along -= 4294967296; +#endif s += SIZE32; sv = NEWSV(42, 0); sv_setiv(sv, (IV)along); @@ -3419,6 +3502,7 @@ PP(pp_unpack) } else if (++bytes >= sizeof(UV)) { /* promote to string */ char *t; + STRLEN n_a; sv = newSVpvf("%.*Vu", (int)TYPE_DIGITS(UV), auv); while (s < strend) { @@ -3428,7 +3512,7 @@ PP(pp_unpack) break; } } - t = SvPV(sv, PL_na); + t = SvPV(sv, n_a); while (*t == '0') t++; sv_chop(sv, t); @@ -3574,7 +3658,7 @@ PP(pp_unpack) char hunk[4]; hunk[3] = '\0'; - len = (*s++ - ' ') & 077; + len = uudmap[*s++] & 077; while (len > 0) { if (s < strend && ISUUCHAR(*s)) a = uudmap[*s++] & 077; @@ -3676,8 +3760,9 @@ doencodes(register SV *sv, register char *s, register I32 len) STATIC SV * is_an_int(char *s, STRLEN l) { + STRLEN n_a; SV *result = newSVpv("", l); - char *result_c = SvPV(result, PL_na); /* convenience */ + char *result_c = SvPV(result, n_a); /* convenience */ char *out = result_c; bool skip = 1; bool ignore = 0; @@ -3833,6 +3918,7 @@ PP(pp_pack) sv_catpvn(cat, null10, len); break; case 'A': + case 'Z': case 'a': fromstr = NEXTFROM; aptr = SvPV(fromstr, fromlen); @@ -4172,6 +4258,7 @@ PP(pp_pack) if (fromstr == &PL_sv_undef) aptr = NULL; else { + STRLEN n_a; /* XXX better yet, could spirit away the string to * a safe spot and hang on to it until the result * of pack() (and all copies of the result) are @@ -4180,9 +4267,9 @@ PP(pp_pack) if (PL_dowarn && (SvTEMP(fromstr) || SvPADTMP(fromstr))) warn("Attempt to pack pointer to temporary value"); if (SvPOK(fromstr) || SvNIOK(fromstr)) - aptr = SvPV(fromstr,PL_na); + aptr = SvPV(fromstr,n_a); else - aptr = SvPV_force(fromstr,PL_na); + aptr = SvPV_force(fromstr,n_a); } sv_catpvn(cat, (char*)&aptr, sizeof(char*)); } @@ -4271,9 +4358,9 @@ PP(pp_split) av_extend(ary,0); av_clear(ary); SPAGAIN; - if (SvRMAGICAL(ary) && (mg = mg_find((SV *) ary, 'P'))) { + if (mg = SvTIED_mg((SV*)ary, 'P')) { PUSHMARK(SP); - XPUSHs(mg->mg_obj); + XPUSHs(SvTIED_obj((SV*)ary, mg)); } else { if (!AvREAL(ary)) { @@ -4522,7 +4609,6 @@ PP(pp_lock) DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: pp_lock lock 0x%lx\n", (unsigned long)thr, (unsigned long)sv);) MUTEX_UNLOCK(MgMUTEXP(mg)); - SvREFCNT_inc(sv); /* keep alive until magic_mutexfree */ save_destructor(unlock_condpair, sv); } #endif /* USE_THREADS */ |