X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pp_hot.c;h=5db5eab6f78ee029895f65c2819158be49a9eb6e;hb=c8e8bf6a4feca6a069b306dce3bede9ce9da14ca;hp=f304e8bd6810c0bdaf547b230b52a4af78e1ad74;hpb=8127e0e3c3aeffc5d0bcdebd664c0fd7cd5bd9fe;p=p5sagit%2Fp5-mst-13.2.git diff --git a/pp_hot.c b/pp_hot.c index f304e8b..5db5eab 100644 --- a/pp_hot.c +++ b/pp_hot.c @@ -1,6 +1,6 @@ /* pp_hot.c * - * Copyright (c) 1991-1997, Larry Wall + * Copyright (c) 1991-2000, 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. @@ -16,48 +16,23 @@ */ #include "EXTERN.h" +#define PERL_IN_PP_HOT_C #include "perl.h" #ifdef I_UNISTD #include #endif -#ifdef I_FCNTL -#include -#endif -#ifdef I_SYS_FILE -#include -#endif - -#define HOP(pos,off) (IN_UTF8 ? utf8_hop(pos, off) : (pos + off)) /* Hot code. */ #ifdef USE_THREADS -static void -unset_cvowner(void *cvarg) -{ - register CV* cv = (CV *) cvarg; -#ifdef DEBUGGING - dTHR; -#endif /* DEBUGGING */ - - DEBUG_S((PerlIO_printf(PerlIO_stderr(), "%p unsetting CvOWNER of %p:%s\n", - thr, cv, SvPEEK((SV*)cv)))); - MUTEX_LOCK(CvMUTEXP(cv)); - DEBUG_S(if (CvDEPTH(cv) != 0) - PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", - CvDEPTH(cv));); - assert(thr == CvOWNER(cv)); - CvOWNER(cv) = 0; - MUTEX_UNLOCK(CvMUTEXP(cv)); - SvREFCNT_dec(cv); -} +static void unset_cvowner(pTHXo_ void *cvarg); #endif /* USE_THREADS */ PP(pp_const) { djSP; - XPUSHs(cSVOP->op_sv); + XPUSHs(cSVOP_sv); RETURN; } @@ -75,9 +50,9 @@ PP(pp_gvsv) djSP; EXTEND(SP,1); if (PL_op->op_private & OPpLVAL_INTRO) - PUSHs(save_scalar(cGVOP->op_gv)); + PUSHs(save_scalar(cGVOP_gv)); else - PUSHs(GvSV(cGVOP->op_gv)); + PUSHs(GvSV(cGVOP_gv)); RETURN; } @@ -86,6 +61,12 @@ PP(pp_null) return NORMAL; } +PP(pp_setstate) +{ + PL_curcop = (COP*)PL_op; + return NORMAL; +} + PP(pp_pushmark) { PUSHMARK(PL_stack_sp); @@ -99,6 +80,8 @@ PP(pp_stringify) char *s; s = SvPV(TOPs,len); sv_setpvn(TARG,s,len); + if (SvUTF8(TOPs) && !IN_BYTE) + SvUTF8_on(TARG); SETTARG; RETURN; } @@ -106,7 +89,7 @@ PP(pp_stringify) PP(pp_gv) { djSP; - XPUSHs((SV*)cGVOP->op_gv); + XPUSHs((SV*)cGVOP_gv); RETURN; } @@ -124,7 +107,6 @@ PP(pp_and) PP(pp_sassign) { djSP; dPOPTOPssrl; - MAGIC *mg; if (PL_op->op_private & OPpASSIGN_BACKWARDS) { SV *temp; @@ -141,9 +123,9 @@ PP(pp_cond_expr) { djSP; if (SvTRUEx(POPs)) - RETURNOP(cCONDOP->op_true); + RETURNOP(cLOGOP->op_other); else - RETURNOP(cCONDOP->op_false); + RETURNOP(cLOGOP->op_next); } PP(pp_unstack) @@ -164,8 +146,14 @@ PP(pp_concat) dPOPTOPssrl; STRLEN len; char *s; + if (TARG != left) { s = SvPV(left,len); + if (TARG == right) { + sv_insert(TARG, 0, 0, s, len); + SETs(TARG); + RETURN; + } sv_setpvn(TARG,s,len); } else if (SvGMAGICAL(TARG)) @@ -175,8 +163,30 @@ PP(pp_concat) s = SvPV_force(TARG, len); } s = SvPV(right,len); - if (SvOK(TARG)) + if (SvOK(TARG)) { +#if defined(PERL_Y2KWARN) + if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_Y2K)) { + STRLEN n; + char *s = SvPV(TARG,n); + if (n >= 2 && s[n-2] == '1' && s[n-1] == '9' + && (n == 2 || !isDIGIT(s[n-3]))) + { + Perl_warner(aTHX_ WARN_Y2K, "Possible Y2K bug: %s", + "about to append an integer to '19'"); + } + } +#endif + if (DO_UTF8(right)) + sv_utf8_upgrade(TARG); sv_catpvn(TARG,s,len); + if (!IN_BYTE) { + if (SvUTF8(right)) + SvUTF8_on(TARG); + } + else if (!SvUTF8(right)) { + SvUTF8_off(TARG); + } + } else sv_setpvn(TARG,s,len); /* suppress warning */ SETTARG; @@ -204,19 +214,15 @@ PP(pp_readline) { tryAMAGICunTARGET(iter, 0); PL_last_in_gv = (GV*)(*PL_stack_sp--); - if (PL_op->op_flags & OPf_SPECIAL) { /* Are called as <$var> */ - if (SvROK(PL_last_in_gv)) { - if (SvTYPE(SvRV(PL_last_in_gv)) != SVt_PVGV) - goto hard_way; + if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { + if (SvROK(PL_last_in_gv) && SvTYPE(SvRV(PL_last_in_gv)) == SVt_PVGV) PL_last_in_gv = (GV*)SvRV(PL_last_in_gv); - } else if (SvTYPE(PL_last_in_gv) != SVt_PVGV) { - hard_way: { + else { dSP; XPUSHs((SV*)PL_last_in_gv); PUTBACK; - pp_rv2gv(ARGS); + pp_rv2gv(); PL_last_in_gv = (GV*)(*PL_stack_sp--); - } } } return do_readline(); @@ -236,8 +242,8 @@ PP(pp_preinc) { djSP; if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV) - croak(PL_no_modify); - if (SvIOK(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && + DIE(aTHX_ PL_no_modify); + if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) && SvIVX(TOPs) != IV_MAX) { ++SvIVX(TOPs); @@ -273,7 +279,7 @@ PP(pp_add) PP(pp_aelemfast) { djSP; - AV *av = GvAV((GV*)cSVOP->op_sv); + AV *av = GvAV(cGVOP_gv); U32 lval = PL_op->op_flags & OPf_MOD; SV** svp = av_fetch(av, PL_op->op_private, lval); SV *sv = (svp ? *svp : &PL_sv_undef); @@ -328,7 +334,7 @@ PP(pp_print) gv = (GV*)*++MARK; else gv = PL_defoutgv; - if (mg = SvTIED_mg((SV*)gv, 'q')) { + if ((mg = SvTIED_mg((SV*)gv, 'q'))) { if (MARK == ORIGMARK) { /* If using default handle then we need to make space to * pass object as 1st arg, so move other args up ... @@ -342,7 +348,7 @@ PP(pp_print) *MARK = SvTIED_obj((SV*)gv, mg); PUTBACK; ENTER; - perl_call_method("PRINT", G_SCALAR); + call_method("PRINT", G_SCALAR); LEAVE; SPAGAIN; MARK = ORIGMARK + 1; @@ -353,23 +359,24 @@ PP(pp_print) if (!(io = GvIO(gv))) { if (ckWARN(WARN_UNOPENED)) { SV* sv = sv_newmortal(); - gv_fullname3(sv, gv, Nullch); - warner(WARN_UNOPENED, "Filehandle %s never opened", SvPV(sv,n_a)); + gv_efullname3(sv, gv, Nullch); + Perl_warner(aTHX_ WARN_UNOPENED, "Filehandle %s never opened", + SvPV(sv,n_a)); } - SETERRNO(EBADF,RMS$_IFI); goto just_say_no; } else if (!(fp = IoOFP(io))) { if (ckWARN2(WARN_CLOSED, WARN_IO)) { - SV* sv = sv_newmortal(); - gv_fullname3(sv, gv, Nullch); - if (IoIFP(io)) - warner(WARN_IO, "Filehandle %s opened only for input", - SvPV(sv,n_a)); + if (IoIFP(io)) { + SV* sv = sv_newmortal(); + gv_efullname3(sv, gv, Nullch); + Perl_warner(aTHX_ WARN_IO, + "Filehandle %s opened only for input", + SvPV(sv,n_a)); + } else if (ckWARN(WARN_CLOSED)) - warner(WARN_CLOSED, "print on closed filehandle %s", - SvPV(sv,n_a)); + report_closed_fh(gv, io, "print", "filehandle"); } SETERRNO(EBADF,IoIFP(io)?RMS$_FAC:RMS$_IFI); goto just_say_no; @@ -429,7 +436,7 @@ PP(pp_rv2av) av = (AV*)SvRV(sv); if (SvTYPE(av) != SVt_PVAV) - DIE("Not an ARRAY reference"); + DIE(aTHX_ "Not an ARRAY reference"); if (PL_op->op_flags & OPf_REF) { SETs((SV*)av); RETURN; @@ -458,9 +465,9 @@ PP(pp_rv2av) if (!SvOK(sv)) { if (PL_op->op_flags & OPf_REF || PL_op->op_private & HINT_STRICT_REFS) - DIE(PL_no_usym, "an ARRAY"); + DIE(aTHX_ PL_no_usym, "an ARRAY"); if (ckWARN(WARN_UNINITIALIZED)) - warner(WARN_UNINITIALIZED, PL_warn_uninit); + report_uninit(); if (GIMME == G_ARRAY) { (void)POPs; RETURN; @@ -468,10 +475,20 @@ PP(pp_rv2av) RETSETUNDEF; } sym = SvPV(sv,n_a); - if (PL_op->op_private & HINT_STRICT_REFS) - DIE(PL_no_symref, sym, "an ARRAY"); - gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); - } else { + if ((PL_op->op_flags & OPf_SPECIAL) && + !(PL_op->op_flags & OPf_MOD)) + { + gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVAV); + if (!gv) + RETSETUNDEF; + } + else { + if (PL_op->op_private & HINT_STRICT_REFS) + DIE(aTHX_ PL_no_symref, sym, "an ARRAY"); + gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVAV); + } + } + else { gv = (GV*)sv; } av = GvAVn(gv); @@ -519,7 +536,7 @@ PP(pp_rv2hv) hv = (HV*)SvRV(sv); if (SvTYPE(hv) != SVt_PVHV && SvTYPE(hv) != SVt_PVAV) - DIE("Not a HASH reference"); + DIE(aTHX_ "Not a HASH reference"); if (PL_op->op_flags & OPf_REF) { SETs((SV*)hv); RETURN; @@ -548,9 +565,9 @@ PP(pp_rv2hv) if (!SvOK(sv)) { if (PL_op->op_flags & OPf_REF || PL_op->op_private & HINT_STRICT_REFS) - DIE(PL_no_usym, "a HASH"); + DIE(aTHX_ PL_no_usym, "a HASH"); if (ckWARN(WARN_UNINITIALIZED)) - warner(WARN_UNINITIALIZED, PL_warn_uninit); + report_uninit(); if (GIMME == G_ARRAY) { SP--; RETURN; @@ -558,10 +575,20 @@ PP(pp_rv2hv) RETSETUNDEF; } sym = SvPV(sv,n_a); - if (PL_op->op_private & HINT_STRICT_REFS) - DIE(PL_no_symref, sym, "a HASH"); - gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); - } else { + if ((PL_op->op_flags & OPf_SPECIAL) && + !(PL_op->op_flags & OPf_MOD)) + { + gv = (GV*)gv_fetchpv(sym, FALSE, SVt_PVHV); + if (!gv) + RETSETUNDEF; + } + else { + if (PL_op->op_private & HINT_STRICT_REFS) + DIE(aTHX_ PL_no_symref, sym, "a HASH"); + gv = (GV*)gv_fetchpv(sym, TRUE, SVt_PVHV); + } + } + else { gv = (GV*)sv; } hv = GvHVn(gv); @@ -576,15 +603,15 @@ PP(pp_rv2hv) if (GIMME == G_ARRAY) { /* array wanted */ *PL_stack_sp = (SV*)hv; - return do_kv(ARGS); + return do_kv(); } else { dTARGET; if (SvTYPE(hv) == SVt_PVAV) hv = avhv_keys((AV*)hv); if (HvFILL(hv)) - sv_setpvf(TARG, "%ld/%ld", - (long)HvFILL(hv), (long)HvMAX(hv) + 1); + Perl_sv_setpvf(aTHX_ TARG, "%"IVdf"/%"IVdf, + (IV)HvFILL(hv), (IV)HvMAX(hv) + 1); else sv_setiv(TARG, 0); @@ -593,6 +620,92 @@ PP(pp_rv2hv) } } +STATIC int +S_do_maybe_phash(pTHX_ AV *ary, SV **lelem, SV **firstlelem, SV **relem, + SV **lastrelem) +{ + OP *leftop; + I32 i; + + leftop = ((BINOP*)PL_op)->op_last; + assert(leftop); + assert(leftop->op_type == OP_NULL && leftop->op_targ == OP_LIST); + leftop = ((LISTOP*)leftop)->op_first; + assert(leftop); + /* Skip PUSHMARK and each element already assigned to. */ + for (i = lelem - firstlelem; i > 0; i--) { + leftop = leftop->op_sibling; + assert(leftop); + } + if (leftop->op_type != OP_RV2HV) + return 0; + + /* pseudohash */ + if (av_len(ary) > 0) + av_fill(ary, 0); /* clear all but the fields hash */ + if (lastrelem >= relem) { + while (relem < lastrelem) { /* gobble up all the rest */ + SV *tmpstr; + assert(relem[0]); + assert(relem[1]); + /* Avoid a memory leak when avhv_store_ent dies. */ + tmpstr = sv_newmortal(); + sv_setsv(tmpstr,relem[1]); /* value */ + relem[1] = tmpstr; + if (avhv_store_ent(ary,relem[0],tmpstr,0)) + (void)SvREFCNT_inc(tmpstr); + if (SvMAGICAL(ary) != 0 && SvSMAGICAL(tmpstr)) + mg_set(tmpstr); + relem += 2; + TAINT_NOT; + } + } + if (relem == lastrelem) + return 1; + return 2; +} + +STATIC void +S_do_oddball(pTHX_ HV *hash, SV **relem, SV **firstrelem) +{ + if (*relem) { + SV *tmpstr; + if (ckWARN(WARN_MISC)) { + if (relem == firstrelem && + SvROK(*relem) && + (SvTYPE(SvRV(*relem)) == SVt_PVAV || + SvTYPE(SvRV(*relem)) == SVt_PVHV)) + { + Perl_warner(aTHX_ WARN_MISC, + "Reference found where even-sized list expected"); + } + else + Perl_warner(aTHX_ WARN_MISC, + "Odd number of elements in hash assignment"); + } + if (SvTYPE(hash) == SVt_PVAV) { + /* pseudohash */ + tmpstr = sv_newmortal(); + if (avhv_store_ent((AV*)hash,*relem,tmpstr,0)) + (void)SvREFCNT_inc(tmpstr); + if (SvMAGICAL(hash) && SvSMAGICAL(tmpstr)) + mg_set(tmpstr); + } + else { + HE *didstore; + tmpstr = NEWSV(29,0); + didstore = hv_store_ent(hash,*relem,tmpstr,0); + if (SvMAGICAL(hash)) { + if (SvSMAGICAL(tmpstr)) + mg_set(tmpstr); + if (!didstore) + sv_2mortal(tmpstr); + } + } + TAINT_NOT; + } +} + PP(pp_aassign) { djSP; @@ -618,21 +731,22 @@ PP(pp_aassign) * special care that assigning the identifier on the left doesn't * clobber a value on the right that's used later in the list. */ - if (PL_op->op_private & OPpASSIGN_COMMON) { + if (PL_op->op_private & (OPpASSIGN_COMMON)) { EXTEND_MORTAL(lastrelem - firstrelem + 1); - for (relem = firstrelem; relem <= lastrelem; relem++) { - /*SUPPRESS 560*/ - if (sv = *relem) { + for (relem = firstrelem; relem <= lastrelem; relem++) { + /*SUPPRESS 560*/ + if ((sv = *relem)) { TAINT_NOT; /* Each item is independent */ - *relem = sv_mortalcopy(sv); + *relem = sv_mortalcopy(sv); } - } + } } relem = firstrelem; lelem = firstlelem; ary = Null(AV*); hash = Null(HV*); + while (lelem <= lastlelem) { TAINT_NOT; /* Each item stands on its own, taintwise. */ sv = *lelem++; @@ -640,7 +754,19 @@ PP(pp_aassign) case SVt_PVAV: ary = (AV*)sv; magic = SvMAGICAL(ary) != 0; - + if (PL_op->op_private & OPpASSIGN_HASH) { + switch (do_maybe_phash(ary, lelem, firstlelem, relem, + lastrelem)) + { + case 0: + goto normal_array; + case 1: + do_oddball((HV*)ary, relem, firstrelem); + } + relem = lastrelem + 1; + break; + } + normal_array: av_clear(ary); av_extend(ary, lastrelem - relem); i = 0; @@ -660,7 +786,7 @@ PP(pp_aassign) TAINT_NOT; } break; - case SVt_PVHV: { + case SVt_PVHV: { /* normal hash */ SV *tmpstr; hash = (HV*)sv; @@ -687,42 +813,16 @@ PP(pp_aassign) TAINT_NOT; } if (relem == lastrelem) { - if (*relem) { - HE *didstore; - if (ckWARN(WARN_UNSAFE)) { - if (relem == firstrelem && - SvROK(*relem) && - ( SvTYPE(SvRV(*relem)) == SVt_PVAV || - SvTYPE(SvRV(*relem)) == SVt_PVHV ) ) - warner(WARN_UNSAFE, "Reference found where even-sized list expected"); - else - warner(WARN_UNSAFE, "Odd number of elements in hash assignment"); - } - tmpstr = NEWSV(29,0); - didstore = hv_store_ent(hash,*relem,tmpstr,0); - if (magic) { - if (SvSMAGICAL(tmpstr)) - mg_set(tmpstr); - if (!didstore) - sv_2mortal(tmpstr); - } - TAINT_NOT; - } + do_oddball(hash, relem, firstrelem); relem++; } } break; default: - if (SvTHINKFIRST(sv)) { - if (SvREADONLY(sv) && PL_curcop != &PL_compiling) { - if (!SvIMMORTAL(sv)) - DIE(PL_no_modify); - if (relem <= lastrelem) - relem++; - break; - } - if (SvROK(sv)) - sv_unref(sv); + if (SvIMMORTAL(sv)) { + if (relem <= lastrelem) + relem++; + break; } if (relem <= lastrelem) { sv_setsv(sv, *relem); @@ -756,13 +856,13 @@ PP(pp_aassign) # endif /* HAS_SETEUID */ if (PL_delaymagic & DM_UID) { if (PL_uid != PL_euid) - DIE("No setreuid available"); + DIE(aTHX_ "No setreuid available"); (void)PerlProc_setuid(PL_uid); } # endif /* HAS_SETREUID */ #endif /* HAS_SETRESUID */ - PL_uid = (int)PerlProc_getuid(); - PL_euid = (int)PerlProc_geteuid(); + PL_uid = PerlProc_getuid(); + PL_euid = PerlProc_geteuid(); } if (PL_delaymagic & DM_GID) { #ifdef HAS_SETRESGID @@ -785,13 +885,13 @@ PP(pp_aassign) # endif /* HAS_SETEGID */ if (PL_delaymagic & DM_GID) { if (PL_gid != PL_egid) - DIE("No setregid available"); + DIE(aTHX_ "No setregid available"); (void)PerlProc_setgid(PL_gid); } # endif /* HAS_SETREGID */ #endif /* HAS_SETRESGID */ - PL_gid = (int)PerlProc_getgid(); - PL_egid = (int)PerlProc_getegid(); + PL_gid = PerlProc_getgid(); + PL_egid = PerlProc_getegid(); } PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid)); } @@ -835,8 +935,8 @@ PP(pp_match) register char *s; char *strend; I32 global; - I32 r_flags; - char *truebase; + I32 r_flags = REXEC_CHECKED; + char *truebase; /* Start of string */ register REGEXP *rx = pm->op_pmregexp; bool rxtainted; I32 gimme = GIMME; @@ -856,7 +956,7 @@ PP(pp_match) s = SvPV(TARG, len); strend = s + len; if (!s) - DIE("panic: do_match"); + DIE(aTHX_ "panic: do_match"); rxtainted = ((pm->op_pmdynflags & PMdf_TAINTED) || (PL_tainted && (pm->op_pmflags & PMf_RETAINT))); TAINT_NOT; @@ -877,24 +977,26 @@ PP(pp_match) truebase = t = s; /* XXXX What part of this is needed with true \G-support? */ - if (global = pm->op_pmflags & PMf_GLOBAL) { - rx->startp[0] = 0; + if ((global = pm->op_pmflags & PMf_GLOBAL)) { + rx->startp[0] = -1; if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { MAGIC* mg = mg_find(TARG, 'g'); if (mg && mg->mg_len >= 0) { if (!(rx->reganch & ROPT_GPOS_SEEN)) - rx->endp[0] = rx->startp[0] = s + mg->mg_len; + rx->endp[0] = rx->startp[0] = mg->mg_len; + else if (rx->reganch & ROPT_ANCH_GPOS) { + r_flags |= REXEC_IGNOREPOS; + rx->endp[0] = rx->startp[0] = mg->mg_len; + } minmatch = (mg->mg_flags & MGf_MINMATCH); update_minmatch = 0; } } } - r_flags = ((gimme != G_ARRAY && !global && rx->nparens) - || SvTEMP(TARG) || PL_sawampersand) - ? REXEC_COPY_STR : 0; - if (SvSCREAM(TARG) && rx->check_substr - && SvTYPE(rx->check_substr) == SVt_PVBM - && SvVALID(rx->check_substr)) + if ((gimme != G_ARRAY && !global && rx->nparens) + || SvTEMP(TARG) || PL_sawampersand) + r_flags |= REXEC_COPY_STR; + if (SvSCREAM(TARG)) r_flags |= REXEC_SCREAM; if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { @@ -903,61 +1005,27 @@ PP(pp_match) } play_it_again: - if (global && rx->startp[0]) { - t = s = rx->endp[0]; + if (global && rx->startp[0] != -1) { + t = s = rx->endp[0] + truebase; if ((s + rx->minlen) > strend) goto nope; if (update_minmatch++) minmatch = had_zerolen; } - if (rx->check_substr) { - if (!(rx->reganch & ROPT_NOSCAN)) { /* Floating checkstring. */ - if (r_flags & REXEC_SCREAM) { - I32 p = -1; - char *b; - - if (PL_screamfirst[BmRARE(rx->check_substr)] < 0) - goto nope; - - b = (char*)HOP((U8*)s, rx->check_offset_min); - if (!(s = screaminstr(TARG, rx->check_substr, b - s, 0, &p, 0))) - goto nope; - - if ((rx->reganch & ROPT_CHECK_ALL) - && !PL_sawampersand && !SvTAIL(rx->check_substr)) - goto yup; - } - else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min), - (unsigned char*)strend, - rx->check_substr, 0))) - goto nope; - else if ((rx->reganch & ROPT_CHECK_ALL) && !PL_sawampersand) - goto yup; - if (s && rx->check_offset_max < s - t) { - ++BmUSEFUL(rx->check_substr); - s = (char*)HOP((U8*)s, -rx->check_offset_max); - } - else - s = t; - } - /* Now checkstring is fixed, i.e. at fixed offset from the - beginning of match, and the match is anchored at s. */ - else if (!PL_multiline) { /* Anchored near beginning of string. */ - I32 slen; - char *b = (char*)HOP((U8*)s, rx->check_offset_min); - if (*SvPVX(rx->check_substr) != *b - || ((slen = SvCUR(rx->check_substr)) > 1 - && memNE(SvPVX(rx->check_substr), b, slen))) - goto nope; - } - if (!(rx->reganch & ROPT_NAUGHTY) && --BmUSEFUL(rx->check_substr) < 0 - && rx->check_substr == rx->float_substr) { - SvREFCNT_dec(rx->check_substr); - rx->check_substr = Nullsv; /* opt is being useless */ - rx->float_substr = Nullsv; - } - } - if (CALLREGEXEC(rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) + if (rx->reganch & RE_USE_INTUIT) { + s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); + + if (!s) + goto nope; + if ( (rx->reganch & ROPT_CHECK_ALL) + && !PL_sawampersand + && ((rx->reganch & ROPT_NOSCAN) + || !((rx->reganch & RE_INTUIT_TAIL) + && (r_flags & REXEC_SCREAM))) + && !SvROK(TARG)) /* Cannot trust since INTUIT cannot guess ^ */ + goto yup; + } + if (CALLREGEXEC(aTHX_ rx, s, strend, truebase, minmatch, TARG, NULL, r_flags)) { PL_curpm = pm; if (pm->op_pmflags & PMf_ONCE) @@ -986,17 +1054,21 @@ play_it_again: for (i = !i; i <= iters; i++) { PUSHs(sv_newmortal()); /*SUPPRESS 560*/ - if ((s = rx->startp[i]) && rx->endp[i] ) { - len = rx->endp[i] - s; + if ((rx->startp[i] != -1) && rx->endp[i] != -1 ) { + len = rx->endp[i] - rx->startp[i]; + s = rx->startp[i] + truebase; sv_setpvn(*SP, s, len); + if ((pm->op_pmdynflags & PMdf_UTF8) && !IN_BYTE) { + SvUTF8_on(*SP); + sv_utf8_downgrade(*SP, TRUE); + } } } if (global) { - truebase = rx->subbeg; - strend = rx->subend; - had_zerolen = (rx->startp[0] && rx->startp[0] == rx->endp[0]); + had_zerolen = (rx->startp[0] != -1 + && rx->startp[0] == rx->endp[0]); PUTBACK; /* EVAL blocks may use stack */ - r_flags |= REXEC_IGNOREPOS; + r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; goto play_it_again; } else if (!iters) @@ -1013,8 +1085,8 @@ play_it_again: sv_magic(TARG, (SV*)0, 'g', Nullch, 0); mg = mg_find(TARG, 'g'); } - if (rx->startp[0]) { - mg->mg_len = rx->endp[0] - rx->subbeg; + if (rx->startp[0] != -1) { + mg->mg_len = rx->endp[0]; if (rx->startp[0] == rx->endp[0]) mg->mg_flags |= MGf_MINMATCH; else @@ -1025,39 +1097,42 @@ play_it_again: RETPUSHYES; } -yup: /* Confirmed by check_substr */ +yup: /* Confirmed by INTUIT */ if (rxtainted) RX_MATCH_TAINTED_on(rx); TAINT_IF(RX_MATCH_TAINTED(rx)); - ++BmUSEFUL(rx->check_substr); PL_curpm = pm; if (pm->op_pmflags & PMf_ONCE) pm->op_pmdynflags |= PMdf_USED; - Safefree(rx->subbase); - rx->subbase = Nullch; + if (RX_MATCH_COPIED(rx)) + Safefree(rx->subbeg); + RX_MATCH_COPIED_off(rx); + rx->subbeg = Nullch; if (global) { rx->subbeg = truebase; - rx->subend = strend; - rx->startp[0] = s; - rx->endp[0] = s + SvCUR(rx->check_substr); + rx->startp[0] = s - truebase; + rx->endp[0] = s - truebase + rx->minlen; + rx->sublen = strend - truebase; goto gotcha; - } + } if (PL_sawampersand) { - char *tmps; + I32 off; - tmps = rx->subbase = savepvn(t, strend-t); - rx->subbeg = tmps; - rx->subend = tmps + (strend-t); - tmps = rx->startp[0] = tmps + (s - t); - rx->endp[0] = tmps + SvCUR(rx->check_substr); + rx->subbeg = savepvn(t, strend - t); + rx->sublen = strend - t; + RX_MATCH_COPIED_on(rx); + off = rx->startp[0] = s - t; + rx->endp[0] = off + rx->minlen; + } + else { /* startp/endp are used by @- @+. */ + rx->startp[0] = s - truebase; + rx->endp[0] = s - truebase + rx->minlen; } + rx->nparens = rx->lastparen = 0; /* used by @- and @+ */ LEAVE_SCOPE(oldsave); RETPUSHYES; nope: - if (rx->check_substr) - ++BmUSEFUL(rx->check_substr); - ret_no: if (global && !(pm->op_pmflags & PMf_CONTINUE)) { if (SvTYPE(TARG) >= SVt_PVMG && SvMAGIC(TARG)) { @@ -1073,7 +1148,7 @@ ret_no: } OP * -do_readline(void) +Perl_do_readline(pTHX) { dSP; dTARGETSTACKED; register SV *sv; @@ -1085,12 +1160,12 @@ do_readline(void) I32 gimme = GIMME_V; MAGIC *mg; - if (mg = SvTIED_mg((SV*)PL_last_in_gv, 'q')) { + if ((mg = SvTIED_mg((SV*)PL_last_in_gv, 'q'))) { PUSHMARK(SP); XPUSHs(SvTIED_obj((SV*)PL_last_in_gv, mg)); PUTBACK; ENTER; - perl_call_method("READLINE", gimme); + call_method("READLINE", gimme); LEAVE; SPAGAIN; if (gimme == G_SCALAR) @@ -1103,9 +1178,9 @@ do_readline(void) if (!fp) { if (IoFLAGS(io) & IOf_ARGV) { if (IoFLAGS(io) & IOf_START) { - IoFLAGS(io) &= ~IOf_START; IoLINES(io) = 0; if (av_len(GvAVn(PL_last_in_gv)) < 0) { + IoFLAGS(io) &= ~IOf_START; do_open(PL_last_in_gv,"-",1,FALSE,O_RDONLY,0,Nullfp); sv_setpvn(GvSV(PL_last_in_gv), "-", 1); SvSETMAGIC(GvSV(PL_last_in_gv)); @@ -1116,7 +1191,6 @@ do_readline(void) fp = nextargv(PL_last_in_gv); if (!fp) { /* Note: fp != IoIFP(io) */ (void)do_close(PL_last_in_gv, FALSE); /* now it does*/ - IoFLAGS(io) |= IOf_START; } } else if (type == OP_GLOB) { @@ -1208,6 +1282,11 @@ do_readline(void) } } #else /* !VMS */ +#ifdef MACOS_TRADITIONAL + sv_setpv(tmpcmd, "glob "); + sv_catsv(tmpcmd, tmpglob); + sv_catpv(tmpcmd, " |"); +#else #ifdef DOSISH #ifdef OS2 sv_setpv(tmpcmd, "for a in "); @@ -1239,6 +1318,7 @@ do_readline(void) #endif #endif /* !CSH */ #endif /* !DOSISH */ +#endif /* MACOS_TRADITIONAL */ (void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd), FALSE, O_RDONLY, 0, Nullfp); fp = IoIFP(io); @@ -1248,11 +1328,25 @@ do_readline(void) } else if (type == OP_GLOB) SP--; + else if (ckWARN(WARN_IO) /* stdout/stderr or other write fh */ + && (IoTYPE(io) == '>' || fp == PerlIO_stdout() + || fp == PerlIO_stderr())) + { + SV* sv = sv_newmortal(); + gv_efullname3(sv, PL_last_in_gv, Nullch); + Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for output", + SvPV_nolen(sv)); + } } if (!fp) { - if (ckWARN(WARN_CLOSED) && io && !(IoFLAGS(io) & IOf_START)) - warner(WARN_CLOSED, - "Read on closed filehandle <%s>", GvENAME(PL_last_in_gv)); + if (ckWARN2(WARN_GLOB,WARN_CLOSED) && io && !(IoFLAGS(io) & IOf_START)) { + if (type == OP_GLOB) + Perl_warner(aTHX_ WARN_GLOB, + "glob failed (can't start child: %s)", + Strerror(errno)); + else + report_closed_fh(PL_last_in_gv, io, "readline", "filehandle"); + } if (gimme == G_SCALAR) { (void)SvOK_off(TARG); PUSHTARG; @@ -1277,21 +1371,29 @@ do_readline(void) sv = sv_2mortal(NEWSV(57, 80)); offset = 0; } + +/* delay EOF state for a snarfed empty file */ +#define SNARF_EOF(gimme,rs,io,sv) \ + (gimme != G_SCALAR || SvCUR(sv) \ + || !RsSNARF(rs) || (IoFLAGS(io) & IOf_NOLINE) \ + || ((IoFLAGS(io) |= IOf_NOLINE), FALSE)) + for (;;) { - if (!sv_gets(sv, fp, offset)) { + if (!sv_gets(sv, fp, offset) + && (type == OP_GLOB || SNARF_EOF(gimme, PL_rs, io, sv))) + { PerlIO_clearerr(fp); if (IoFLAGS(io) & IOf_ARGV) { fp = nextargv(PL_last_in_gv); if (fp) continue; (void)do_close(PL_last_in_gv, FALSE); - IoFLAGS(io) |= IOf_START; } else if (type == OP_GLOB) { - if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_CLOSED)) { - warner(WARN_CLOSED, + if (!do_close(PL_last_in_gv, FALSE) && ckWARN(WARN_GLOB)) { + Perl_warner(aTHX_ WARN_GLOB, "glob failed (child exited with status %d%s)", - STATUS_CURRENT >> 8, + (int)(STATUS_CURRENT >> 8), (STATUS_CURRENT & 0x80) ? ", core dumped" : ""); } } @@ -1323,7 +1425,7 @@ do_readline(void) if (!isALPHA(*tmps) && !isDIGIT(*tmps) && strchr("$&*(){}[]'\";\\|?<>~`", *tmps)) break; - if (*tmps && PerlLIO_stat(SvPVX(sv), &PL_statbuf) < 0) { + if (*tmps && PerlLIO_lstat(SvPVX(sv), &PL_statbuf) < 0) { (void)POPs; /* Unmatched wildcard? Chuck it... */ continue; } @@ -1386,7 +1488,7 @@ PP(pp_helem) } else if (SvTYPE(hv) == SVt_PVAV) { if (PL_op->op_private & OPpLVAL_INTRO) - DIE("Can't localize pseudo-hash element"); + DIE(aTHX_ "Can't localize pseudo-hash element"); svp = avhv_fetch_ent((AV*)hv, keysv, lval && !defer, 0); } else { @@ -1398,7 +1500,7 @@ PP(pp_helem) SV* key2; if (!defer) { STRLEN n_a; - DIE(PL_no_helem, SvPV(keysv, n_a)); + DIE(aTHX_ PL_no_helem, SvPV(keysv, n_a)); } lv = sv_newmortal(); sv_upgrade(lv, SVt_PVLV); @@ -1494,12 +1596,14 @@ PP(pp_iter) register PERL_CONTEXT *cx; SV* sv; AV* av; + SV **itersvp; EXTEND(SP, 1); cx = &cxstack[cxstack_ix]; if (CxTYPE(cx) != CXt_LOOP) - DIE("panic: pp_iter"); + DIE(aTHX_ "panic: pp_iter"); + itersvp = CxITERVAR(cx); av = cx->blk_loop.iterary; if (SvTYPE(av) != SVt_PVAV) { /* iterate ($min .. $max) */ @@ -1510,11 +1614,9 @@ PP(pp_iter) char *max = SvPV((SV*)av, maxlen); if (!SvNIOK(cur) && SvCUR(cur) <= maxlen) { #ifndef USE_THREADS /* don't risk potential race */ - if (SvREFCNT(*cx->blk_loop.itervar) == 1 - && !SvMAGICAL(*cx->blk_loop.itervar)) - { + if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { /* safe to reuse old SV */ - sv_setsv(*cx->blk_loop.itervar, cur); + sv_setsv(*itersvp, cur); } else #endif @@ -1522,8 +1624,8 @@ PP(pp_iter) /* we need a fresh SV every time so that loop body sees a * completely new SV for closures/references to work as * they used to */ - SvREFCNT_dec(*cx->blk_loop.itervar); - *cx->blk_loop.itervar = newSVsv(cur); + SvREFCNT_dec(*itersvp); + *itersvp = newSVsv(cur); } if (strEQ(SvPVX(cur), max)) sv_setiv(cur, 0); /* terminate next time */ @@ -1538,11 +1640,9 @@ PP(pp_iter) RETPUSHNO; #ifndef USE_THREADS /* don't risk potential race */ - if (SvREFCNT(*cx->blk_loop.itervar) == 1 - && !SvMAGICAL(*cx->blk_loop.itervar)) - { + if (SvREFCNT(*itersvp) == 1 && !SvMAGICAL(*itersvp)) { /* safe to reuse old SV */ - sv_setiv(*cx->blk_loop.itervar, cx->blk_loop.iterix++); + sv_setiv(*itersvp, cx->blk_loop.iterix++); } else #endif @@ -1550,8 +1650,8 @@ PP(pp_iter) /* we need a fresh SV every time so that loop body sees a * completely new SV for closures/references to work as they * used to */ - SvREFCNT_dec(*cx->blk_loop.itervar); - *cx->blk_loop.itervar = newSViv(cx->blk_loop.iterix++); + SvREFCNT_dec(*itersvp); + *itersvp = newSViv(cx->blk_loop.iterix++); } RETPUSHYES; } @@ -1560,11 +1660,11 @@ PP(pp_iter) if (cx->blk_loop.iterix >= (av == PL_curstack ? cx->blk_oldsp : AvFILL(av))) RETPUSHNO; - SvREFCNT_dec(*cx->blk_loop.itervar); + SvREFCNT_dec(*itersvp); - if (sv = (SvMAGICAL(av)) - ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) - : AvARRAY(av)[++cx->blk_loop.iterix]) + if ((sv = SvMAGICAL(av) + ? *av_fetch(av, ++cx->blk_loop.iterix, FALSE) + : AvARRAY(av)[++cx->blk_loop.iterix])) SvTEMP_off(sv); else sv = &PL_sv_undef; @@ -1584,11 +1684,11 @@ PP(pp_iter) } LvTARG(lv) = SvREFCNT_inc(av); LvTARGOFF(lv) = cx->blk_loop.iterix; - LvTARGLEN(lv) = (UV) -1; + LvTARGLEN(lv) = (STRLEN)UV_MAX; sv = (SV*)lv; } - *cx->blk_loop.itervar = SvREFCNT_inc(sv); + *itersvp = SvREFCNT_inc(sv); RETPUSHYES; } @@ -1615,7 +1715,6 @@ PP(pp_subst) STRLEN len; int force_on_match = 0; I32 oldsave = PL_savestack_ix; - I32 update_minmatch = 1; /* known replacement string? */ dstr = (pm->op_pmflags & PMf_CONST) ? POPs : Nullsv; @@ -1628,7 +1727,7 @@ PP(pp_subst) if (SvREADONLY(TARG) || (SvTYPE(TARG) > SVt_PVLV && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG)))) - croak(PL_no_modify); + DIE(aTHX_ PL_no_modify); PUTBACK; s = SvPV(TARG, len); @@ -1642,7 +1741,7 @@ PP(pp_subst) force_it: if (!pm || !s) - DIE("panic: do_subst"); + DIE(aTHX_ "panic: do_subst"); strend = s + len; maxiters = 2*(strend - s) + 10; /* We can match twice at each @@ -1655,55 +1754,26 @@ PP(pp_subst) } r_flags = (rx->nparens || SvTEMP(TARG) || PL_sawampersand) ? REXEC_COPY_STR : 0; - if (SvSCREAM(TARG) && rx->check_substr - && SvTYPE(rx->check_substr) == SVt_PVBM - && SvVALID(rx->check_substr)) + if (SvSCREAM(TARG)) r_flags |= REXEC_SCREAM; if (pm->op_pmflags & (PMf_MULTILINE|PMf_SINGLELINE)) { SAVEINT(PL_multiline); PL_multiline = pm->op_pmflags & PMf_MULTILINE; } orig = m = s; - if (rx->check_substr) { - if (!(rx->reganch & ROPT_NOSCAN)) { /* It floats. */ - if (r_flags & REXEC_SCREAM) { - I32 p = -1; - char *b; - - if (PL_screamfirst[BmRARE(rx->check_substr)] < 0) - goto nope; - - b = (char*)HOP((U8*)s, rx->check_offset_min); - if (!(s = screaminstr(TARG, rx->check_substr, b - s, 0, &p, 0))) - goto nope; - } - else if (!(s = fbm_instr((unsigned char*)HOP((U8*)s, rx->check_offset_min), - (unsigned char*)strend, - rx->check_substr, 0))) - goto nope; - if (s && rx->check_offset_max < s - m) { - ++BmUSEFUL(rx->check_substr); - s = (char*)HOP((U8*)s, -rx->check_offset_max); - } - else - s = m; - } - /* Now checkstring is fixed, i.e. at fixed offset from the - beginning of match, and the match is anchored at s. */ - else if (!PL_multiline) { /* Anchored at beginning of string. */ - I32 slen; - char *b = (char*)HOP((U8*)s, rx->check_offset_min); - if (*SvPVX(rx->check_substr) != *b - || ((slen = SvCUR(rx->check_substr)) > 1 - && memNE(SvPVX(rx->check_substr), b, slen))) - goto nope; - } - if (!(rx->reganch & ROPT_NAUGHTY) && --BmUSEFUL(rx->check_substr) < 0 - && rx->check_substr == rx->float_substr) { - SvREFCNT_dec(rx->check_substr); - rx->check_substr = Nullsv; /* opt is being useless */ - rx->float_substr = Nullsv; - } + if (rx->reganch & RE_USE_INTUIT) { + s = CALLREG_INTUIT_START(aTHX_ rx, TARG, s, strend, r_flags, NULL); + + if (!s) + goto nope; + /* How to do it in subst? */ +/* if ( (rx->reganch & ROPT_CHECK_ALL) + && !PL_sawampersand + && ((rx->reganch & ROPT_NOSCAN) + || !((rx->reganch & RE_INTUIT_TAIL) + && (r_flags & REXEC_SCREAM)))) + goto yup; +*/ } /* only replace once? */ @@ -1715,7 +1785,9 @@ PP(pp_subst) /* can do inplace substitution? */ if (c && clen <= rx->minlen && (once || !(r_flags & REXEC_COPY_STR)) && !(rx->reganch & ROPT_LOOKBEHIND_SEEN)) { - if (!CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, r_flags)) { + if (!CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, + r_flags | REXEC_CHECKED)) + { SPAGAIN; PUSHs(&PL_sv_no); LEAVE_SCOPE(oldsave); @@ -1731,13 +1803,8 @@ PP(pp_subst) SvSCREAM_off(TARG); /* disable possible screamer */ if (once) { rxtainted |= RX_MATCH_TAINTED(rx); - if (rx->subbase) { - m = orig + (rx->startp[0] - rx->subbase); - d = orig + (rx->endp[0] - rx->subbase); - } else { - m = rx->startp[0]; - d = rx->endp[0]; - } + m = orig + rx->startp[0]; + d = orig + rx->endp[0]; s = orig; if (m - s > strend - d) { /* faster to shorten from end */ if (clen) { @@ -1753,7 +1820,7 @@ PP(pp_subst) SvCUR_set(TARG, m - s); } /*SUPPRESS 560*/ - else if (i = m - s) { /* faster from front */ + else if ((i = m - s)) { /* faster from front */ d -= clen; m = d; sv_chop(TARG, d-i); @@ -1778,11 +1845,11 @@ PP(pp_subst) else { do { if (iters++ > maxiters) - DIE("Substitution loop"); + DIE(aTHX_ "Substitution loop"); rxtainted |= RX_MATCH_TAINTED(rx); - m = rx->startp[0]; + m = rx->startp[0] + orig; /*SUPPRESS 560*/ - if (i = m - s) { + if ((i = m - s)) { if (s != d) Move(s, d, i, char); d += i; @@ -1791,9 +1858,11 @@ PP(pp_subst) Copy(c, d, clen, char); d += clen; } - s = rx->endp[0]; - } while (CALLREGEXEC(rx, s, strend, orig, s == m, - Nullsv, NULL, 0)); /* don't match same null twice */ + s = rx->endp[0] + orig; + } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, + TARG, NULL, + /* don't match same null twice */ + REXEC_NOT_FIRST|REXEC_IGNOREPOS)); if (s != d) { i = strend - s; SvCUR_set(TARG, d - SvPVX(TARG) + i); @@ -1815,7 +1884,9 @@ PP(pp_subst) RETURN; } - if (CALLREGEXEC(rx, s, strend, orig, 0, TARG, NULL, r_flags)) { + if (CALLREGEXEC(aTHX_ rx, s, strend, orig, 0, TARG, NULL, + r_flags | REXEC_CHECKED)) + { if (force_on_match) { force_on_match = 0; s = SvPV_force(TARG, len); @@ -1831,26 +1902,26 @@ PP(pp_subst) PUSHSUBST(cx); RETURNOP(cPMOP->op_pmreplroot); } - r_flags |= REXEC_IGNOREPOS; + r_flags |= REXEC_IGNOREPOS | REXEC_NOT_FIRST; do { if (iters++ > maxiters) - DIE("Substitution loop"); + DIE(aTHX_ "Substitution loop"); rxtainted |= RX_MATCH_TAINTED(rx); - if (rx->subbase && rx->subbase != orig) { + if (RX_MATCH_COPIED(rx) && rx->subbeg != orig) { m = s; s = orig; - orig = rx->subbase; + orig = rx->subbeg; s = orig + (m - s); strend = s + (strend - m); } - m = rx->startp[0]; + m = rx->startp[0] + orig; sv_catpvn(dstr, s, m-s); - s = rx->endp[0]; + s = rx->endp[0] + orig; if (clen) sv_catpvn(dstr, c, clen); if (once) break; - } while (CALLREGEXEC(rx, s, strend, orig, s == m, TARG, NULL, r_flags)); + } while (CALLREGEXEC(aTHX_ rx, s, strend, orig, s == m, TARG, NULL, r_flags)); sv_catpvn(dstr, s, strend - s); (void)SvOOK_off(TARG); @@ -1875,8 +1946,6 @@ PP(pp_subst) goto ret_no; nope: - ++BmUSEFUL(rx->check_substr); - ret_no: SPAGAIN; PUSHs(&PL_sv_no); @@ -1915,7 +1984,7 @@ PP(pp_grepwhile) SV *src; ENTER; /* enter inner scope */ - SAVESPTR(PL_curpm); + SAVEVPTR(PL_curpm); src = PL_stack_base[*PL_markstack_ptr]; SvTEMP_off(src); @@ -1933,27 +2002,31 @@ PP(pp_leavesub) PMOP *newpm; I32 gimme; register PERL_CONTEXT *cx; - struct block_sub cxsub; + SV *sv; POPBLOCK(cx,newpm); - POPSUB1(cx); /* Delay POPSUB2 until stack values are safe */ TAINT_NOT; if (gimme == G_SCALAR) { MARK = newsp + 1; if (MARK <= SP) { - if (cxsub.cv && CvDEPTH(cxsub.cv) > 1) { + if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { if (SvTEMP(TOPs)) { *MARK = SvREFCNT_inc(TOPs); FREETMPS; sv_2mortal(*MARK); - } else { + } + else { + sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ FREETMPS; - *MARK = sv_mortalcopy(TOPs); + *MARK = sv_mortalcopy(sv); + SvREFCNT_dec(sv); } - } else + } + else *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); - } else { + } + else { MEXTEND(MARK, 0); *MARK = &PL_sv_undef; } @@ -1969,15 +2042,170 @@ PP(pp_leavesub) } PUTBACK; - POPSUB2(); /* Stack values are safe: release CV and @_ ... */ + POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ + PL_curpm = newpm; /* ... and pop $1 et al */ + + LEAVE; + LEAVESUB(sv); + return pop_return(); +} + +/* This duplicates the above code because the above code must not + * get any slower by more conditions */ +PP(pp_leavesublv) +{ + djSP; + SV **mark; + SV **newsp; + PMOP *newpm; + I32 gimme; + register PERL_CONTEXT *cx; + SV *sv; + + POPBLOCK(cx,newpm); + + TAINT_NOT; + + if (cx->blk_sub.lval & OPpENTERSUB_INARGS) { + /* We are an argument to a function or grep(). + * This kind of lvalueness was legal before lvalue + * subroutines too, so be backward compatible: + * cannot report errors. */ + + /* Scalar context *is* possible, on the LHS of -> only, + * as in f()->meth(). But this is not an lvalue. */ + if (gimme == G_SCALAR) + goto temporise; + if (gimme == G_ARRAY) { + if (!CvLVALUE(cx->blk_sub.cv)) + goto temporise_array; + EXTEND_MORTAL(SP - newsp); + for (mark = newsp + 1; mark <= SP; mark++) { + if (SvTEMP(*mark)) + /* empty */ ; + else if (SvFLAGS(*mark) & (SVs_PADTMP | SVf_READONLY)) + *mark = sv_mortalcopy(*mark); + else { + /* Can be a localized value subject to deletion. */ + PL_tmps_stack[++PL_tmps_ix] = *mark; + (void)SvREFCNT_inc(*mark); + } + } + } + } + else if (cx->blk_sub.lval) { /* Leave it as it is if we can. */ + /* Here we go for robustness, not for speed, so we change all + * the refcounts so the caller gets a live guy. Cannot set + * TEMP, so sv_2mortal is out of question. */ + if (!CvLVALUE(cx->blk_sub.cv)) { + POPSUB(cx,sv); + PL_curpm = newpm; + LEAVE; + LEAVESUB(sv); + DIE(aTHX_ "Can't modify non-lvalue subroutine call"); + } + if (gimme == G_SCALAR) { + MARK = newsp + 1; + EXTEND_MORTAL(1); + if (MARK == SP) { + if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { + POPSUB(cx,sv); + PL_curpm = newpm; + LEAVE; + LEAVESUB(sv); + DIE(aTHX_ "Can't return a %s from lvalue subroutine", + SvREADONLY(TOPs) ? "readonly value" : "temporary"); + } + else { /* Can be a localized value + * subject to deletion. */ + PL_tmps_stack[++PL_tmps_ix] = *mark; + (void)SvREFCNT_inc(*mark); + } + } + else { /* Should not happen? */ + POPSUB(cx,sv); + PL_curpm = newpm; + LEAVE; + LEAVESUB(sv); + DIE(aTHX_ "%s returned from lvalue subroutine in scalar context", + (MARK > SP ? "Empty array" : "Array")); + } + SP = MARK; + } + else if (gimme == G_ARRAY) { + EXTEND_MORTAL(SP - newsp); + for (mark = newsp + 1; mark <= SP; mark++) { + if (SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) { + /* Might be flattened array after $#array = */ + PUTBACK; + POPSUB(cx,sv); + PL_curpm = newpm; + LEAVE; + LEAVESUB(sv); + DIE(aTHX_ "Can't return %s from lvalue subroutine", + (*mark != &PL_sv_undef) + ? (SvREADONLY(TOPs) + ? "a readonly value" : "a temporary") + : "an uninitialized value"); + } + else { + /* Can be a localized value subject to deletion. */ + PL_tmps_stack[++PL_tmps_ix] = *mark; + (void)SvREFCNT_inc(*mark); + } + } + } + } + else { + if (gimme == G_SCALAR) { + temporise: + MARK = newsp + 1; + if (MARK <= SP) { + if (cx->blk_sub.cv && CvDEPTH(cx->blk_sub.cv) > 1) { + if (SvTEMP(TOPs)) { + *MARK = SvREFCNT_inc(TOPs); + FREETMPS; + sv_2mortal(*MARK); + } + else { + sv = SvREFCNT_inc(TOPs); /* FREETMPS could clobber it */ + FREETMPS; + *MARK = sv_mortalcopy(sv); + SvREFCNT_dec(sv); + } + } + else + *MARK = SvTEMP(TOPs) ? TOPs : sv_mortalcopy(TOPs); + } + else { + MEXTEND(MARK, 0); + *MARK = &PL_sv_undef; + } + SP = MARK; + } + else if (gimme == G_ARRAY) { + temporise_array: + for (MARK = newsp + 1; MARK <= SP; MARK++) { + if (!SvTEMP(*MARK)) { + *MARK = sv_mortalcopy(*MARK); + TAINT_NOT; /* Each item is independent */ + } + } + } + } + PUTBACK; + + POPSUB(cx,sv); /* Stack values are safe: release CV and @_ ... */ PL_curpm = newpm; /* ... and pop $1 et al */ LEAVE; + LEAVESUB(sv); return pop_return(); } + STATIC CV * -get_db_sub(SV **svp, CV *cv) +S_get_db_sub(pTHX_ SV **svp, CV *cv) { dTHR; SV *dbsv = GvSV(PL_DBsub); @@ -2000,10 +2228,10 @@ get_db_sub(SV **svp, CV *cv) } } else { - SvUPGRADE(dbsv, SVt_PVIV); - SvIOK_on(dbsv); + (void)SvUPGRADE(dbsv, SVt_PVIV); + (void)SvIOK_on(dbsv); SAVEIV(SvIVX(dbsv)); - SvIVX(dbsv) = (IV)cv; /* Do it the quickest way */ + SvIVX(dbsv) = PTR2IV(cv); /* Do it the quickest way */ } if (CvXSUB(cv)) @@ -2023,7 +2251,7 @@ PP(pp_entersub) bool hasargs = (PL_op->op_flags & OPf_STACKED) != 0; if (!sv) - DIE("Not a CODE reference"); + DIE(aTHX_ "Not a CODE reference"); switch (SvTYPE(sv)) { default: if (!SvROK(sv)) { @@ -2042,10 +2270,10 @@ PP(pp_entersub) else sym = SvPV(sv, n_a); if (!sym) - DIE(PL_no_usym, "a subroutine"); + DIE(aTHX_ PL_no_usym, "a subroutine"); if (PL_op->op_private & HINT_STRICT_REFS) - DIE(PL_no_symref, sym, "a subroutine"); - cv = perl_get_cv(sym, TRUE); + DIE(aTHX_ PL_no_symref, sym, "a subroutine"); + cv = get_cv(sym, TRUE); break; } { @@ -2058,13 +2286,18 @@ PP(pp_entersub) /* FALL THROUGH */ case SVt_PVHV: case SVt_PVAV: - DIE("Not a CODE reference"); + DIE(aTHX_ "Not a CODE reference"); case SVt_PVCV: cv = (CV*)sv; break; case SVt_PVGV: if (!(cv = GvCVu((GV*)sv))) - cv = sv_2cv(sv, &stash, &gv, TRUE); + cv = sv_2cv(sv, &stash, &gv, FALSE); + if (!cv) { + ENTER; + SAVETMPS; + goto try_autoload; + } break; } @@ -2072,39 +2305,44 @@ PP(pp_entersub) SAVETMPS; retry: - if (!cv) - DIE("Not a CODE reference"); - if (!CvROOT(cv) && !CvXSUB(cv)) { GV* autogv; SV* sub_name; /* anonymous or undef'd function leaves us no recourse */ if (CvANON(cv) || !(gv = CvGV(cv))) - DIE("Undefined subroutine called"); + DIE(aTHX_ "Undefined subroutine called"); + /* autoloaded stub? */ if (cv != GvCV(gv)) { cv = GvCV(gv); - goto retry; } /* should call AUTOLOAD now? */ - if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), + else { +try_autoload: + if ((autogv = gv_autoload4(GvSTASH(gv), GvNAME(gv), GvNAMELEN(gv), FALSE))) - { - cv = GvCV(autogv); - goto retry; + { + cv = GvCV(autogv); + } + /* sorry */ + else { + sub_name = sv_newmortal(); + gv_efullname3(sub_name, gv, Nullch); + DIE(aTHX_ "Undefined subroutine &%s called", SvPVX(sub_name)); + } } - /* sorry */ - sub_name = sv_newmortal(); - gv_efullname3(sub_name, gv, Nullch); - DIE("Undefined subroutine &%s called", SvPVX(sub_name)); + if (!cv) + DIE(aTHX_ "Not a CODE reference"); + goto retry; } gimme = GIMME_V; - if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) + if ((PL_op->op_private & OPpENTERSUB_DB) && GvCV(PL_DBsub) && !CvNODEBUG(cv)) { cv = get_db_sub(&sv, cv); - if (!cv) - DIE("No DBsub routine"); + if (!cv) + DIE(aTHX_ "No DBsub routine"); + } #ifdef USE_THREADS /* @@ -2121,8 +2359,13 @@ PP(pp_entersub) if (SP > PL_stack_base + TOPMARK) sv = *(PL_stack_base + TOPMARK + 1); else { - MUTEX_UNLOCK(CvMUTEXP(cv)); - croak("no argument for locked method call"); + AV *av = (AV*)PL_curpad[0]; + if (hasargs || !av || AvFILLp(av) < 0 + || !(sv = AvARRAY(av)[0])) + { + MUTEX_UNLOCK(CvMUTEXP(cv)); + DIE(aTHX_ "no argument for locked method call"); + } } if (SvROK(sv)) sv = SvRV(sv); @@ -2144,10 +2387,10 @@ PP(pp_entersub) while (MgOWNER(mg)) COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg)); MgOWNER(mg) = thr; - DEBUG_S(PerlIO_printf(PerlIO_stderr(), "%p: pp_entersub lock %p\n", + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p: pp_entersub lock %p\n", thr, sv);) MUTEX_UNLOCK(MgMUTEXP(mg)); - save_destructor(unlock_condpair, sv); + SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv); } MUTEX_LOCK(CvMUTEXP(cv)); } @@ -2186,13 +2429,13 @@ PP(pp_entersub) /* We already have a clone to use */ MUTEX_UNLOCK(CvMUTEXP(cv)); cv = *(CV**)svp; - DEBUG_S(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "entersub: %p already has clone %p:%s\n", thr, cv, SvPEEK((SV*)cv))); CvOWNER(cv) = thr; SvREFCNT_inc(cv); if (CvDEPTH(cv) == 0) - SAVEDESTRUCTOR(unset_cvowner, (void*) cv); + SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); } else { /* (2) => grab ownership of cv. (3) => make clone */ @@ -2200,16 +2443,17 @@ PP(pp_entersub) CvOWNER(cv) = thr; SvREFCNT_inc(cv); MUTEX_UNLOCK(CvMUTEXP(cv)); - DEBUG_S(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "entersub: %p grabbing %p:%s in stash %s\n", thr, cv, SvPEEK((SV*)cv), CvSTASH(cv) ? HvNAME(CvSTASH(cv)) : "(none)")); - } else { + } + else { /* Make a new clone. */ CV *clonecv; SvREFCNT_inc(cv); /* don't let it vanish from under us */ MUTEX_UNLOCK(CvMUTEXP(cv)); - DEBUG_S((PerlIO_printf(PerlIO_stderr(), + DEBUG_S((PerlIO_printf(Perl_debug_log, "entersub: %p cloning %p:%s\n", thr, cv, SvPEEK((SV*)cv)))); /* @@ -2227,16 +2471,17 @@ PP(pp_entersub) SvREFCNT_inc(cv); } DEBUG_S(if (CvDEPTH(cv) != 0) - PerlIO_printf(PerlIO_stderr(), "depth %ld != 0\n", + PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", CvDEPTH(cv));); - SAVEDESTRUCTOR(unset_cvowner, (void*) cv); + SAVEDESTRUCTOR_X(unset_cvowner, (void*) cv); } } #endif /* USE_THREADS */ if (CvXSUB(cv)) { +#ifdef PERL_XSUB_OLDSTYLE if (CvOLDSTYLE(cv)) { - I32 (*fp3)_((int,int,int)); + I32 (*fp3)(int,int,int); dMARK; register I32 items = SP - MARK; /* We dont worry to copy from @_. */ @@ -2245,13 +2490,15 @@ PP(pp_entersub) SP--; } PL_stack_sp = mark + 1; - fp3 = (I32(*)_((int,int,int)))CvXSUB(cv); + fp3 = (I32(*)(int,int,int))CvXSUB(cv); items = (*fp3)(CvXSUBANY(cv).any_i32, MARK - PL_stack_base + 1, items); PL_stack_sp = PL_stack_base + items; } - else { + else +#endif /* PERL_XSUB_OLDSTYLE */ + { I32 markix = TOPMARK; PUTBACK; @@ -2277,15 +2524,14 @@ PP(pp_entersub) PUTBACK ; } } - if (PL_curcopdb) { /* We assume that the first - XSUB in &DB::sub is the - called one. */ - SAVESPTR(PL_curcop); + /* We assume first XSUB in &DB::sub is the called one. */ + if (PL_curcopdb) { + SAVEVPTR(PL_curcop); PL_curcop = PL_curcopdb; PL_curcopdb = NULL; } /* Do we need to open block here? XXXX */ - (void)(*CvXSUB(cv))(cv _PERL_OBJECT_THIS); + (void)(*CvXSUB(cv))(aTHXo_ cv); /* Enforce some sanity in scalar context. */ if (gimme == G_SCALAR && ++markix != PL_stack_sp - PL_stack_base ) { @@ -2316,14 +2562,16 @@ PP(pp_entersub) if (CvDEPTH(cv) < 2) (void)SvREFCNT_inc(cv); else { /* save temporaries on recursion? */ + PERL_STACK_OVERFLOW_CHECK(); if (CvDEPTH(cv) > AvFILLp(padlist)) { AV *av; AV *newpad = newAV(); SV **oldpad = AvARRAY(svp[CvDEPTH(cv)-1]); I32 ix = AvFILLp((AV*)svp[1]); + I32 names_fill = AvFILLp((AV*)svp[0]); svp = AvARRAY(svp[0]); for ( ;ix > 0; ix--) { - if (svp[ix] != &PL_sv_undef) { + if (names_fill >= ix && svp[ix] != &PL_sv_undef) { char *name = SvPVX(svp[ix]); if ((SvFLAGS(svp[ix]) & SVf_FAKE) /* outer lexical? */ || *name == '&') /* anonymous code? */ @@ -2340,6 +2588,9 @@ PP(pp_entersub) SvPADMY_on(sv); } } + else if (IS_PADGV(oldpad[ix]) || IS_PADCONST(oldpad[ix])) { + av_store(newpad, ix, sv = SvREFCNT_inc(oldpad[ix])); + } else { av_store(newpad, ix, sv = NEWSV(0,0)); SvPADTMP_on(sv); @@ -2368,7 +2619,7 @@ PP(pp_entersub) } } #endif /* USE_THREADS */ - SAVESPTR(PL_curpad); + SAVEVPTR(PL_curpad); PL_curpad = AvARRAY((AV*)svp[CvDEPTH(cv)]); #ifndef USE_THREADS if (hasargs) @@ -2378,13 +2629,16 @@ PP(pp_entersub) SV** ary; #if 0 - DEBUG_S(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p entersub preparing @_\n", thr)); #endif av = (AV*)PL_curpad[0]; if (AvREAL(av)) { + /* @_ is normally not REAL--this should only ever + * happen when DB::sub() calls things that modify @_ */ av_clear(av); AvREAL_off(av); + AvREIFY_on(av); } #ifndef USE_THREADS cx->blk_sub.savearray = GvAV(PL_defgv); @@ -2423,7 +2677,7 @@ PP(pp_entersub) && !(PERLDB_SUB && cv == GvCV(PL_DBsub))) sub_crush_depth(cv); #if 0 - DEBUG_S(PerlIO_printf(PerlIO_stderr(), + DEBUG_S(PerlIO_printf(Perl_debug_log, "%p entersub returning %p\n", thr, CvSTART(cv))); #endif RETURNOP(CvSTART(cv)); @@ -2431,14 +2685,14 @@ PP(pp_entersub) } void -sub_crush_depth(CV *cv) +Perl_sub_crush_depth(pTHX_ CV *cv) { if (CvANON(cv)) - warner(WARN_RECURSION, "Deep recursion on anonymous subroutine"); + Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on anonymous subroutine"); else { SV* tmpstr = sv_newmortal(); gv_efullname3(tmpstr, CvGV(cv), Nullch); - warner(WARN_RECURSION, "Deep recursion on subroutine \"%s\"", + Perl_warner(aTHX_ WARN_RECURSION, "Deep recursion on subroutine \"%s\"", SvPVX(tmpstr)); } } @@ -2462,7 +2716,7 @@ PP(pp_aelem) if (!svp || *svp == &PL_sv_undef) { SV* lv; if (!defer) - DIE(PL_no_aelem, elem); + DIE(aTHX_ PL_no_aelem, elem); lv = sv_newmortal(); sv_upgrade(lv, SVt_PVLV); LvTYPE(lv) = 'y'; @@ -2486,13 +2740,13 @@ PP(pp_aelem) } void -vivify_ref(SV *sv, U32 to_what) +Perl_vivify_ref(pTHX_ SV *sv, U32 to_what) { if (SvGMAGICAL(sv)) mg_get(sv); if (!SvOK(sv)) { if (SvREADONLY(sv)) - croak(PL_no_modify); + Perl_croak(aTHX_ PL_no_modify); if (SvTYPE(sv) < SVt_RV) sv_upgrade(sv, SVt_RV); else if (SvTYPE(sv) >= SVt_PV) { @@ -2519,25 +2773,45 @@ vivify_ref(SV *sv, U32 to_what) PP(pp_method) { djSP; + SV* sv = TOPs; + + if (SvROK(sv)) { + SV* rsv = SvRV(sv); + if (SvTYPE(rsv) == SVt_PVCV) { + SETs(rsv); + RETURN; + } + } + + SETs(method_common(sv, Null(U32*))); + RETURN; +} + +PP(pp_method_named) +{ + djSP; + SV* sv = cSVOP->op_sv; + U32 hash = SvUVX(sv); + + XPUSHs(method_common(sv, &hash)); + RETURN; +} + +STATIC SV * +S_method_common(pTHX_ SV* meth, U32* hashp) +{ SV* sv; SV* ob; GV* gv; HV* stash; char* name; + STRLEN namelen; char* packname; STRLEN packlen; - if (SvROK(TOPs)) { - sv = SvRV(TOPs); - if (SvTYPE(sv) == SVt_PVCV) { - SETs(sv); - RETURN; - } - } - - name = SvPV(TOPs, packlen); + name = SvPV(meth, namelen); sv = *(PL_stack_base + TOPMARK + 1); - + if (SvGMAGICAL(sv)) mg_get(sv); if (SvROK(sv)) @@ -2552,14 +2826,14 @@ PP(pp_method) !(ob=(SV*)GvIO(iogv))) { if (!packname || - ((*(U8*)packname >= 0xc0 && IN_UTF8) + ((*(U8*)packname >= 0xc0 && DO_UTF8(sv)) ? !isIDFIRST_utf8((U8*)packname) : !isIDFIRST(*packname) )) { - DIE("Can't call method \"%s\" %s", name, - SvOK(sv)? "without a package or object reference" - : "on an undefined value"); + Perl_croak(aTHX_ "Can't call method \"%s\" %s", name, + SvOK(sv) ? "without a package or object reference" + : "on an undefined value"); } stash = gv_stashpvn(packname, packlen, TRUE); goto fetch; @@ -2567,12 +2841,28 @@ PP(pp_method) *(PL_stack_base + TOPMARK + 1) = sv_2mortal(newRV((SV*)iogv)); } - if (!ob || !SvOBJECT(ob)) - DIE("Can't call method \"%s\" on unblessed reference", name); + if (!ob || !(SvOBJECT(ob) + || (SvTYPE(ob) == SVt_PVGV && (ob = (SV*)GvIO((GV*)ob)) + && SvOBJECT(ob)))) + { + Perl_croak(aTHX_ "Can't call method \"%s\" on unblessed reference", + name); + } stash = SvSTASH(ob); fetch: + /* shortcut for simple names */ + if (hashp) { + HE* he = hv_fetch_ent(stash, meth, 0, *hashp); + if (he) { + gv = (GV*)HeVAL(he); + if (isGV(gv) && GvCV(gv) && + (!GvCVGEN(gv) || GvCVGEN(gv) == PL_sub_generation)) + return (SV*)GvCV(gv); + } + } + gv = gv_fetchmethod(stash, name); if (!gv) { char* leaf = name; @@ -2586,17 +2876,38 @@ PP(pp_method) sep = p, leaf = p + 2; } if (!sep || ((sep - name) == 5 && strnEQ(name, "SUPER", 5))) { - packname = HvNAME(sep ? PL_curcop->cop_stash : stash); + packname = sep ? CopSTASHPV(PL_curcop) : HvNAME(stash); packlen = strlen(packname); } else { packname = name; packlen = sep - name; } - DIE("Can't locate object method \"%s\" via package \"%.*s\"", - leaf, (int)packlen, packname); + Perl_croak(aTHX_ + "Can't locate object method \"%s\" via package \"%s\"", + leaf, packname); } - SETs(isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv); - RETURN; + return isGV(gv) ? (SV*)GvCV(gv) : (SV*)gv; } +#ifdef USE_THREADS +static void +unset_cvowner(pTHXo_ void *cvarg) +{ + register CV* cv = (CV *) cvarg; +#ifdef DEBUGGING + dTHR; +#endif /* DEBUGGING */ + + DEBUG_S((PerlIO_printf(Perl_debug_log, "%p unsetting CvOWNER of %p:%s\n", + thr, cv, SvPEEK((SV*)cv)))); + MUTEX_LOCK(CvMUTEXP(cv)); + DEBUG_S(if (CvDEPTH(cv) != 0) + PerlIO_printf(Perl_debug_log, "depth %ld != 0\n", + CvDEPTH(cv));); + assert(thr == CvOWNER(cv)); + CvOWNER(cv) = 0; + MUTEX_UNLOCK(CvMUTEXP(cv)); + SvREFCNT_dec(cv); +} +#endif /* USE_THREADS */