3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
16 #define PERL_IN_PERL_C
18 #include "patchlevel.h" /* for local_patches */
22 char *nw_get_sitelib(const char *pl);
25 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
42 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
43 char *getenv (char *); /* Usually in <stdlib.h> */
46 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
54 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
60 #if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
69 MUTEX_INIT(&PL_dollarzero_mutex); \
72 PERL_SET_THX(my_perl); \
76 # define INIT_TLS_AND_INTERP \
78 if (!PL_curinterp) { \
79 PERL_SET_INTERP(my_perl); \
81 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
94 /* New() needs interpreter, so call malloc() instead */
95 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
97 Zero(my_perl, 1, PerlInterpreter);
113 =head1 Embedding Functions
115 =for apidoc perl_alloc
117 Allocates a new Perl interpreter. See L<perlembed>.
125 PerlInterpreter *my_perl;
126 #ifdef USE_5005THREADS
130 /* New() needs interpreter, so call malloc() instead */
131 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
134 Zero(my_perl, 1, PerlInterpreter);
137 #endif /* PERL_IMPLICIT_SYS */
140 =for apidoc perl_construct
142 Initializes a new Perl interpreter. See L<perlembed>.
148 perl_construct(pTHXx)
152 PL_perl_destruct_level = 1;
154 if (PL_perl_destruct_level > 0)
157 /* Init the real globals (and main thread)? */
159 #ifdef PERL_FLEXIBLE_EXCEPTIONS
160 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
163 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
165 PL_linestr = NEWSV(65,79);
166 sv_upgrade(PL_linestr,SVt_PVIV);
168 if (!SvREADONLY(&PL_sv_undef)) {
169 /* set read-only and try to insure than we wont see REFCNT==0
172 SvREADONLY_on(&PL_sv_undef);
173 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
175 sv_setpv(&PL_sv_no,PL_No);
177 SvREADONLY_on(&PL_sv_no);
178 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
180 sv_setpv(&PL_sv_yes,PL_Yes);
182 SvREADONLY_on(&PL_sv_yes);
183 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
186 PL_sighandlerp = Perl_sighandler;
187 PL_pidstatus = newHV();
190 PL_rs = newSVpvn("\n", 1);
195 PL_lex_state = LEX_NOTPARSING;
201 SET_NUMERIC_STANDARD();
205 PL_patchlevel = NEWSV(0,4);
206 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
207 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
208 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
209 s = (U8*)SvPVX(PL_patchlevel);
210 /* Build version strings using "native" characters */
211 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
212 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
213 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
215 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
216 SvPOK_on(PL_patchlevel);
217 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
218 ((NV)PERL_VERSION / (NV)1000) +
219 ((NV)PERL_SUBVERSION / (NV)1000000);
220 SvNOK_on(PL_patchlevel); /* dual valued */
221 SvUTF8_on(PL_patchlevel);
222 SvREADONLY_on(PL_patchlevel);
225 #if defined(LOCAL_PATCH_COUNT)
226 PL_localpatches = local_patches; /* For possible -v */
229 #ifdef HAVE_INTERP_INTERN
233 PerlIO_init(aTHX); /* Hook to IO system */
235 PL_fdpid = newAV(); /* for remembering popen pids by fd */
236 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
237 PL_errors = newSVpvn("",0);
238 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
239 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
240 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
242 PL_regex_padav = newAV();
243 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
244 PL_regex_pad = AvARRAY(PL_regex_padav);
246 #ifdef USE_REENTRANT_API
247 Perl_reentrant_init(aTHX);
250 /* Note that strtab is a rather special HV. Assumptions are made
251 about not iterating on it, and not adding tie magic to it.
252 It is properly deallocated in perl_destruct() */
255 HvSHAREKEYS_off(PL_strtab); /* mandatory */
256 hv_ksplit(PL_strtab, 512);
258 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
259 _dyld_lookup_and_bind
260 ("__environ", (unsigned long *) &environ_pointer, NULL);
263 #ifdef USE_ENVIRON_ARRAY
264 PL_origenviron = environ;
267 /* Use sysconf(_SC_CLK_TCK) if available, if not
268 * available or if the sysconf() fails, use the HZ. */
269 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
270 PL_clocktick = sysconf(_SC_CLK_TCK);
271 if (PL_clocktick <= 0)
275 PL_stashcache = newHV();
277 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
278 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0 */
283 s = PerlEnv_getenv("PERL_HASH_SEED");
285 while (isSPACE(*s)) s++;
286 if (s && isDIGIT(*s))
287 PL_hash_seed = (UV)Atoul(s);
288 #ifndef USE_HASH_SEED_EXPLICIT
290 /* Compute a random seed */
291 (void)seedDrand01((Rand_seed_t)seed());
292 PL_srand_called = TRUE;
293 PL_hash_seed = (UV)(Drand01() * (NV)UV_MAX);
294 #if RANDBITS < (UVSIZE * 8)
296 int skip = (UVSIZE * 8) - RANDBITS;
297 PL_hash_seed >>= skip;
298 /* The low bits might need extra help. */
299 PL_hash_seed += (UV)(Drand01() * ((1 << skip) - 1));
301 #endif /* RANDBITS < (UVSIZE * 8) */
303 #endif /* USE_HASH_SEED_EXPLICIT */
304 if (!PL_earlytaint && (s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG")))
305 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
308 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
314 =for apidoc nothreadhook
316 Stub that provides thread hook for perl_destruct when there are
323 Perl_nothreadhook(pTHX)
329 =for apidoc perl_destruct
331 Shuts down a Perl interpreter. See L<perlembed>.
339 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
341 #ifdef USE_5005THREADS
343 #endif /* USE_5005THREADS */
345 /* wait for all pseudo-forked children to finish */
346 PERL_WAIT_FOR_CHILDREN;
348 destruct_level = PL_perl_destruct_level;
352 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
354 if (destruct_level < i)
361 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
366 if (PL_endav && !PL_minus_c)
367 call_list(PL_scopestack_ix, PL_endav);
373 /* Need to flush since END blocks can produce output */
376 if (CALL_FPTR(PL_threadhook)(aTHX)) {
377 /* Threads hook has vetoed further cleanup */
378 return STATUS_NATIVE_EXPORT;
381 /* We must account for everything. */
383 /* Destroy the main CV and syntax tree */
385 op_free(PL_main_root);
386 PL_main_root = Nullop;
388 PL_curcop = &PL_compiling;
389 PL_main_start = Nullop;
390 SvREFCNT_dec(PL_main_cv);
394 /* Tell PerlIO we are about to tear things apart in case
395 we have layers which are using resources that should
399 PerlIO_destruct(aTHX);
401 if (PL_sv_objcount) {
403 * Try to destruct global references. We do this first so that the
404 * destructors and destructees still exist. Some sv's might remain.
405 * Non-referenced objects are on their own.
410 /* unhook hooks which will soon be, or use, destroyed data */
411 SvREFCNT_dec(PL_warnhook);
412 PL_warnhook = Nullsv;
413 SvREFCNT_dec(PL_diehook);
416 /* call exit list functions */
417 while (PL_exitlistlen-- > 0)
418 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
420 Safefree(PL_exitlist);
425 if (destruct_level == 0){
427 DEBUG_P(debprofdump());
429 #if defined(PERLIO_LAYERS)
430 /* No more IO - including error messages ! */
431 PerlIO_cleanup(aTHX);
434 /* The exit() function will do everything that needs doing. */
435 return STATUS_NATIVE_EXPORT;
438 /* jettison our possibly duplicated environment */
439 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
440 * so we certainly shouldn't free it here
442 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
443 if (environ != PL_origenviron
445 /* only main thread can free environ[0] contents */
446 && PL_curinterp == aTHX
452 for (i = 0; environ[i]; i++)
453 safesysfree(environ[i]);
455 /* Must use safesysfree() when working with environ. */
456 safesysfree(environ);
458 environ = PL_origenviron;
463 /* the syntax tree is shared between clones
464 * so op_free(PL_main_root) only ReREFCNT_dec's
465 * REGEXPs in the parent interpreter
466 * we need to manually ReREFCNT_dec for the clones
469 I32 i = AvFILLp(PL_regex_padav) + 1;
470 SV **ary = AvARRAY(PL_regex_padav);
474 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
476 if (SvFLAGS(resv) & SVf_BREAK) {
477 /* this is PL_reg_curpm, already freed
478 * flag is set in regexec.c:S_regtry
480 SvFLAGS(resv) &= ~SVf_BREAK;
482 else if(SvREPADTMP(resv)) {
483 SvREPADTMP_off(resv);
490 SvREFCNT_dec(PL_regex_padav);
491 PL_regex_padav = Nullav;
495 SvREFCNT_dec((SV*) PL_stashcache);
496 PL_stashcache = NULL;
498 /* loosen bonds of global variables */
501 (void)PerlIO_close(PL_rsfp);
505 /* Filters for program text */
506 SvREFCNT_dec(PL_rsfp_filters);
507 PL_rsfp_filters = Nullav;
510 PL_preprocess = FALSE;
516 PL_doswitches = FALSE;
517 PL_dowarn = G_WARN_OFF;
518 PL_doextract = FALSE;
519 PL_sawampersand = FALSE; /* must save all match strings */
522 Safefree(PL_inplace);
524 SvREFCNT_dec(PL_patchlevel);
527 SvREFCNT_dec(PL_e_script);
528 PL_e_script = Nullsv;
531 /* magical thingies */
533 SvREFCNT_dec(PL_ofs_sv); /* $, */
536 SvREFCNT_dec(PL_ors_sv); /* $\ */
539 SvREFCNT_dec(PL_rs); /* $/ */
542 PL_multiline = 0; /* $* */
543 Safefree(PL_osname); /* $^O */
546 SvREFCNT_dec(PL_statname);
547 PL_statname = Nullsv;
550 /* defgv, aka *_ should be taken care of elsewhere */
552 /* clean up after study() */
553 SvREFCNT_dec(PL_lastscream);
554 PL_lastscream = Nullsv;
555 Safefree(PL_screamfirst);
557 Safefree(PL_screamnext);
561 Safefree(PL_efloatbuf);
562 PL_efloatbuf = Nullch;
565 /* startup and shutdown function lists */
566 SvREFCNT_dec(PL_beginav);
567 SvREFCNT_dec(PL_beginav_save);
568 SvREFCNT_dec(PL_endav);
569 SvREFCNT_dec(PL_checkav);
570 SvREFCNT_dec(PL_checkav_save);
571 SvREFCNT_dec(PL_initav);
573 PL_beginav_save = Nullav;
576 PL_checkav_save = Nullav;
579 /* shortcuts just get cleared */
585 PL_argvoutgv = Nullgv;
587 PL_stderrgv = Nullgv;
588 PL_last_in_gv = Nullgv;
590 PL_debstash = Nullhv;
592 /* reset so print() ends up where we expect */
595 SvREFCNT_dec(PL_argvout_stack);
596 PL_argvout_stack = Nullav;
598 SvREFCNT_dec(PL_modglobal);
599 PL_modglobal = Nullhv;
600 SvREFCNT_dec(PL_preambleav);
601 PL_preambleav = Nullav;
602 SvREFCNT_dec(PL_subname);
604 SvREFCNT_dec(PL_linestr);
606 SvREFCNT_dec(PL_pidstatus);
607 PL_pidstatus = Nullhv;
608 SvREFCNT_dec(PL_toptarget);
609 PL_toptarget = Nullsv;
610 SvREFCNT_dec(PL_bodytarget);
611 PL_bodytarget = Nullsv;
612 PL_formtarget = Nullsv;
614 /* free locale stuff */
615 #ifdef USE_LOCALE_COLLATE
616 Safefree(PL_collation_name);
617 PL_collation_name = Nullch;
620 #ifdef USE_LOCALE_NUMERIC
621 Safefree(PL_numeric_name);
622 PL_numeric_name = Nullch;
623 SvREFCNT_dec(PL_numeric_radix_sv);
626 /* clear utf8 character classes */
627 SvREFCNT_dec(PL_utf8_alnum);
628 SvREFCNT_dec(PL_utf8_alnumc);
629 SvREFCNT_dec(PL_utf8_ascii);
630 SvREFCNT_dec(PL_utf8_alpha);
631 SvREFCNT_dec(PL_utf8_space);
632 SvREFCNT_dec(PL_utf8_cntrl);
633 SvREFCNT_dec(PL_utf8_graph);
634 SvREFCNT_dec(PL_utf8_digit);
635 SvREFCNT_dec(PL_utf8_upper);
636 SvREFCNT_dec(PL_utf8_lower);
637 SvREFCNT_dec(PL_utf8_print);
638 SvREFCNT_dec(PL_utf8_punct);
639 SvREFCNT_dec(PL_utf8_xdigit);
640 SvREFCNT_dec(PL_utf8_mark);
641 SvREFCNT_dec(PL_utf8_toupper);
642 SvREFCNT_dec(PL_utf8_totitle);
643 SvREFCNT_dec(PL_utf8_tolower);
644 SvREFCNT_dec(PL_utf8_tofold);
645 SvREFCNT_dec(PL_utf8_idstart);
646 SvREFCNT_dec(PL_utf8_idcont);
647 PL_utf8_alnum = Nullsv;
648 PL_utf8_alnumc = Nullsv;
649 PL_utf8_ascii = Nullsv;
650 PL_utf8_alpha = Nullsv;
651 PL_utf8_space = Nullsv;
652 PL_utf8_cntrl = Nullsv;
653 PL_utf8_graph = Nullsv;
654 PL_utf8_digit = Nullsv;
655 PL_utf8_upper = Nullsv;
656 PL_utf8_lower = Nullsv;
657 PL_utf8_print = Nullsv;
658 PL_utf8_punct = Nullsv;
659 PL_utf8_xdigit = Nullsv;
660 PL_utf8_mark = Nullsv;
661 PL_utf8_toupper = Nullsv;
662 PL_utf8_totitle = Nullsv;
663 PL_utf8_tolower = Nullsv;
664 PL_utf8_tofold = Nullsv;
665 PL_utf8_idstart = Nullsv;
666 PL_utf8_idcont = Nullsv;
668 if (!specialWARN(PL_compiling.cop_warnings))
669 SvREFCNT_dec(PL_compiling.cop_warnings);
670 PL_compiling.cop_warnings = Nullsv;
671 if (!specialCopIO(PL_compiling.cop_io))
672 SvREFCNT_dec(PL_compiling.cop_io);
673 PL_compiling.cop_io = Nullsv;
674 CopFILE_free(&PL_compiling);
675 CopSTASH_free(&PL_compiling);
677 /* Prepare to destruct main symbol table. */
682 SvREFCNT_dec(PL_curstname);
683 PL_curstname = Nullsv;
685 /* clear queued errors */
686 SvREFCNT_dec(PL_errors);
690 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
691 if (PL_scopestack_ix != 0)
692 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
693 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
694 (long)PL_scopestack_ix);
695 if (PL_savestack_ix != 0)
696 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
697 "Unbalanced saves: %ld more saves than restores\n",
698 (long)PL_savestack_ix);
699 if (PL_tmps_floor != -1)
700 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
701 (long)PL_tmps_floor + 1);
702 if (cxstack_ix != -1)
703 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
704 (long)cxstack_ix + 1);
707 /* Now absolutely destruct everything, somehow or other, loops or no. */
708 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
709 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
711 /* the 2 is for PL_fdpid and PL_strtab */
712 while (PL_sv_count > 2 && sv_clean_all())
715 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
716 SvFLAGS(PL_fdpid) |= SVt_PVAV;
717 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
718 SvFLAGS(PL_strtab) |= SVt_PVHV;
720 AvREAL_off(PL_fdpid); /* no surviving entries */
721 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
724 #ifdef HAVE_INTERP_INTERN
728 /* Destruct the global string table. */
730 /* Yell and reset the HeVAL() slots that are still holding refcounts,
731 * so that sv_free() won't fail on them.
739 max = HvMAX(PL_strtab);
740 array = HvARRAY(PL_strtab);
743 if (hent && ckWARN_d(WARN_INTERNAL)) {
744 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
745 "Unbalanced string table refcount: (%d) for \"%s\"",
746 HeVAL(hent) - Nullsv, HeKEY(hent));
747 HeVAL(hent) = Nullsv;
757 SvREFCNT_dec(PL_strtab);
760 /* free the pointer table used for cloning */
761 ptr_table_free(PL_ptr_table);
764 /* free special SVs */
766 SvREFCNT(&PL_sv_yes) = 0;
767 sv_clear(&PL_sv_yes);
768 SvANY(&PL_sv_yes) = NULL;
769 SvFLAGS(&PL_sv_yes) = 0;
771 SvREFCNT(&PL_sv_no) = 0;
773 SvANY(&PL_sv_no) = NULL;
774 SvFLAGS(&PL_sv_no) = 0;
778 for (i=0; i<=2; i++) {
779 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
780 sv_clear(PERL_DEBUG_PAD(i));
781 SvANY(PERL_DEBUG_PAD(i)) = NULL;
782 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
786 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
787 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
789 #ifdef DEBUG_LEAKING_SCALARS
790 if (PL_sv_count != 0) {
795 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
796 svend = &sva[SvREFCNT(sva)];
797 for (sv = sva + 1; sv < svend; ++sv) {
798 if (SvTYPE(sv) != SVTYPEMASK) {
799 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
807 #if defined(PERLIO_LAYERS)
808 /* No more IO - including error messages ! */
809 PerlIO_cleanup(aTHX);
812 /* sv_undef needs to stay immortal until after PerlIO_cleanup
813 as currently layers use it rather than Nullsv as a marker
814 for no arg - and will try and SvREFCNT_dec it.
816 SvREFCNT(&PL_sv_undef) = 0;
817 SvREADONLY_off(&PL_sv_undef);
819 Safefree(PL_origfilename);
820 Safefree(PL_reg_start_tmp);
822 Safefree(PL_reg_curpm);
823 Safefree(PL_reg_poscache);
825 Safefree(PL_op_mask);
826 Safefree(PL_psig_ptr);
827 Safefree(PL_psig_name);
828 Safefree(PL_bitcount);
829 Safefree(PL_psig_pend);
831 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
833 DEBUG_P(debprofdump());
835 #ifdef USE_REENTRANT_API
836 Perl_reentrant_free(aTHX);
841 /* As the absolutely last thing, free the non-arena SV for mess() */
844 /* it could have accumulated taint magic */
845 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
848 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
849 moremagic = mg->mg_moremagic;
850 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
852 Safefree(mg->mg_ptr);
856 /* we know that type >= SVt_PV */
857 (void)SvOOK_off(PL_mess_sv);
858 Safefree(SvPVX(PL_mess_sv));
859 Safefree(SvANY(PL_mess_sv));
860 Safefree(PL_mess_sv);
863 return STATUS_NATIVE_EXPORT;
867 =for apidoc perl_free
869 Releases a Perl interpreter. See L<perlembed>.
877 #if defined(WIN32) || defined(NETWARE)
878 # if defined(PERL_IMPLICIT_SYS)
880 void *host = nw_internal_host;
882 void *host = w32_internal_host;
886 nw_delete_internal_host(host);
888 win32_delete_internal_host(host);
899 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
901 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
902 PL_exitlist[PL_exitlistlen].fn = fn;
903 PL_exitlist[PL_exitlistlen].ptr = ptr;
908 =for apidoc perl_parse
910 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
916 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
921 #ifdef USE_5005THREADS
925 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
928 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
929 setuid perl scripts securely.\n");
937 /* Set PL_origalen be the sum of the contiguous argv[]
938 * elements plus the size of the env in case that it is
939 * contiguous with the argv[]. This is used in mg.c:mg_set()
940 * as the maximum modifiable length of $0. In the worst case
941 * the area we are able to modify is limited to the size of
942 * the original argv[0]. (See below for 'contiguous', though.)
947 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
948 /* Do the mask check only if the args seem like aligned. */
950 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
952 /* See if all the arguments are contiguous in memory. Note
953 * that 'contiguous' is a loose term because some platforms
954 * align the argv[] and the envp[]. If the arguments look
955 * like non-aligned, assume that they are 'strictly' or
956 * 'traditionally' contiguous. If the arguments look like
957 * aligned, we just check that they are within aligned
958 * PTRSIZE bytes. As long as no system has something bizarre
959 * like the argv[] interleaved with some other data, we are
960 * fine. (Did I just evoke Murphy's Law?) --jhi */
963 for (i = 1; i < PL_origargc; i++) {
964 if ((PL_origargv[i] == s + 1
966 || PL_origargv[i] == s + 2
971 (PL_origargv[i] > s &&
973 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
982 /* Can we grab env area too to be used as the area for $0? */
983 if (PL_origenviron) {
984 if ((PL_origenviron[0] == s + 1
986 || (PL_origenviron[0] == s + 9 && (s += 8))
991 (PL_origenviron[0] > s &&
993 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
997 s = PL_origenviron[0];
1000 my_setenv("NoNe SuCh", Nullch);
1001 /* Force copy of environment. */
1002 for (i = 1; PL_origenviron[i]; i++) {
1003 if (PL_origenviron[i] == s + 1
1006 (PL_origenviron[i] > s &&
1007 PL_origenviron[i] <=
1008 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1011 s = PL_origenviron[i];
1019 PL_origalen = s - PL_origargv[0];
1024 /* Come here if running an undumped a.out. */
1026 PL_origfilename = savepv(argv[0]);
1027 PL_do_undump = FALSE;
1028 cxstack_ix = -1; /* start label stack again */
1030 init_postdump_symbols(argc,argv,env);
1035 op_free(PL_main_root);
1036 PL_main_root = Nullop;
1038 PL_main_start = Nullop;
1039 SvREFCNT_dec(PL_main_cv);
1040 PL_main_cv = Nullcv;
1043 oldscope = PL_scopestack_ix;
1044 PL_dowarn = G_WARN_OFF;
1046 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1047 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1053 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1054 parse_body(env,xsinit);
1057 call_list(oldscope, PL_checkav);
1064 /* my_exit() was called */
1065 while (PL_scopestack_ix > oldscope)
1068 PL_curstash = PL_defstash;
1070 call_list(oldscope, PL_checkav);
1071 ret = STATUS_NATIVE_EXPORT;
1074 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1082 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1084 S_vparse_body(pTHX_ va_list args)
1086 char **env = va_arg(args, char**);
1087 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1089 return parse_body(env, xsinit);
1094 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1096 int argc = PL_origargc;
1097 char **argv = PL_origargv;
1098 char *scriptname = NULL;
1100 VOL bool dosearch = FALSE;
1101 char *validarg = "";
1104 char *cddir = Nullch;
1106 sv_setpvn(PL_linestr,"",0);
1107 sv = newSVpvn("",0); /* first used for -I flags */
1111 for (argc--,argv++; argc > 0; argc--,argv++) {
1112 if (argv[0][0] != '-' || !argv[0][1])
1116 validarg = " PHOOEY ";
1124 #ifndef PERL_STRICT_CR
1149 if ((s = moreswitches(s)))
1154 CHECK_MALLOC_TOO_LATE_FOR('t');
1155 if( !PL_tainting ) {
1156 PL_taint_warn = TRUE;
1162 CHECK_MALLOC_TOO_LATE_FOR('T');
1164 PL_taint_warn = FALSE;
1169 #ifdef MACOS_TRADITIONAL
1170 /* ignore -e for Dev:Pseudo argument */
1171 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1174 if (PL_euid != PL_uid || PL_egid != PL_gid)
1175 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1177 PL_e_script = newSVpvn("",0);
1178 filter_add(read_e_script, NULL);
1181 sv_catpv(PL_e_script, s);
1183 sv_catpv(PL_e_script, argv[1]);
1187 Perl_croak(aTHX_ "No code specified for -e");
1188 sv_catpv(PL_e_script, "\n");
1191 case 'I': /* -I handled both here and in moreswitches() */
1193 if (!*++s && (s=argv[1]) != Nullch) {
1198 STRLEN len = strlen(s);
1199 p = savepvn(s, len);
1200 incpush(p, TRUE, TRUE, FALSE);
1201 sv_catpvn(sv, "-I", 2);
1202 sv_catpvn(sv, p, len);
1203 sv_catpvn(sv, " ", 1);
1207 Perl_croak(aTHX_ "No directory specified for -I");
1211 PL_preprocess = TRUE;
1221 PL_preambleav = newAV();
1222 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1224 PL_Sv = newSVpv("print myconfig();",0);
1226 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1228 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1230 sv_catpv(PL_Sv,"\" Compile-time options:");
1232 sv_catpv(PL_Sv," DEBUGGING");
1234 # ifdef MULTIPLICITY
1235 sv_catpv(PL_Sv," MULTIPLICITY");
1237 # ifdef USE_5005THREADS
1238 sv_catpv(PL_Sv," USE_5005THREADS");
1240 # ifdef USE_ITHREADS
1241 sv_catpv(PL_Sv," USE_ITHREADS");
1243 # ifdef USE_64_BIT_INT
1244 sv_catpv(PL_Sv," USE_64_BIT_INT");
1246 # ifdef USE_64_BIT_ALL
1247 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1249 # ifdef USE_LONG_DOUBLE
1250 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1252 # ifdef USE_LARGE_FILES
1253 sv_catpv(PL_Sv," USE_LARGE_FILES");
1256 sv_catpv(PL_Sv," USE_SOCKS");
1258 # ifdef PERL_IMPLICIT_CONTEXT
1259 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1261 # ifdef PERL_IMPLICIT_SYS
1262 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1264 sv_catpv(PL_Sv,"\\n\",");
1266 #if defined(LOCAL_PATCH_COUNT)
1267 if (LOCAL_PATCH_COUNT > 0) {
1269 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1270 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1271 if (PL_localpatches[i])
1272 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1276 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1279 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1281 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1284 sv_catpv(PL_Sv, "; \
1286 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1289 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1292 print \" \\%ENV:\\n @env\\n\" if @env; \
1293 print \" \\@INC:\\n @INC\\n\";");
1296 PL_Sv = newSVpv("config_vars(qw(",0);
1297 sv_catpv(PL_Sv, ++s);
1298 sv_catpv(PL_Sv, "))");
1301 av_push(PL_preambleav, PL_Sv);
1302 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1305 PL_doextract = TRUE;
1313 if (!*++s || isSPACE(*s)) {
1317 /* catch use of gnu style long options */
1318 if (strEQ(s, "version")) {
1322 if (strEQ(s, "help")) {
1329 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1333 sv_setsv(get_sv("/", TRUE), PL_rs);
1336 #ifndef SECURE_INTERNAL_GETENV
1339 (s = PerlEnv_getenv("PERL5OPT")))
1344 if (*s == '-' && *(s+1) == 'T') {
1345 CHECK_MALLOC_TOO_LATE_FOR('T');
1347 PL_taint_warn = FALSE;
1350 char *popt_copy = Nullch;
1363 if (!strchr("DIMUdmtwA", *s))
1364 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1368 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1369 s = popt_copy + (s - popt);
1370 d = popt_copy + (d - popt);
1377 if( !PL_tainting ) {
1378 PL_taint_warn = TRUE;
1388 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1389 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1393 scriptname = argv[0];
1396 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1398 else if (scriptname == Nullch) {
1400 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1408 open_script(scriptname,dosearch,sv,&fdscript);
1410 validate_suid(validarg, scriptname,fdscript);
1413 #if defined(SIGCHLD) || defined(SIGCLD)
1416 # define SIGCHLD SIGCLD
1418 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1419 if (sigstate == SIG_IGN) {
1420 if (ckWARN(WARN_SIGNAL))
1421 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1422 "Can't ignore signal CHLD, forcing to default");
1423 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1429 #ifdef MACOS_TRADITIONAL
1430 if (PL_doextract || gMacPerl_AlwaysExtract) {
1435 if (cddir && PerlDir_chdir(cddir) < 0)
1436 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1440 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1441 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1442 CvUNIQUE_on(PL_compcv);
1444 CvPADLIST(PL_compcv) = pad_new(0);
1445 #ifdef USE_5005THREADS
1446 CvOWNER(PL_compcv) = 0;
1447 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1448 MUTEX_INIT(CvMUTEXP(PL_compcv));
1449 #endif /* USE_5005THREADS */
1452 boot_core_UNIVERSAL();
1454 boot_core_xsutils();
1458 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1460 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1466 # ifdef HAS_SOCKS5_INIT
1467 socks5_init(argv[0]);
1473 init_predump_symbols();
1474 /* init_postdump_symbols not currently designed to be called */
1475 /* more than once (ENV isn't cleared first, for example) */
1476 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1478 init_postdump_symbols(argc,argv,env);
1480 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1481 * PL_utf8locale is conditionally turned on by
1482 * locale.c:Perl_init_i18nl10n() if the environment
1483 * look like the user wants to use UTF-8. */
1485 /* Requires init_predump_symbols(). */
1486 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1491 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1492 * and the default open disciplines. */
1493 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1494 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1496 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1497 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1498 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1500 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1501 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1502 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1504 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1505 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1506 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1507 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1508 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1511 sv_setpvn(sv, ":utf8\0:utf8", 11);
1513 sv_setpvn(sv, ":utf8\0", 6);
1516 sv_setpvn(sv, "\0:utf8", 6);
1522 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1523 if (strEQ(s, "unsafe"))
1524 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1525 else if (strEQ(s, "safe"))
1526 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1528 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1533 /* now parse the script */
1535 SETERRNO(0,SS_NORMAL);
1537 #ifdef MACOS_TRADITIONAL
1538 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1540 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1542 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1543 MacPerl_MPWFileName(PL_origfilename));
1547 if (yyparse() || PL_error_count) {
1549 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1551 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1556 CopLINE_set(PL_curcop, 0);
1557 PL_curstash = PL_defstash;
1558 PL_preprocess = FALSE;
1560 SvREFCNT_dec(PL_e_script);
1561 PL_e_script = Nullsv;
1568 SAVECOPFILE(PL_curcop);
1569 SAVECOPLINE(PL_curcop);
1570 gv_check(PL_defstash);
1577 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1578 dump_mstats("after compilation:");
1587 =for apidoc perl_run
1589 Tells a Perl interpreter to run. See L<perlembed>.
1600 #ifdef USE_5005THREADS
1604 oldscope = PL_scopestack_ix;
1609 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1611 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1617 cxstack_ix = -1; /* start context stack again */
1619 case 0: /* normal completion */
1620 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1625 case 2: /* my_exit() */
1626 while (PL_scopestack_ix > oldscope)
1629 PL_curstash = PL_defstash;
1630 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1631 PL_endav && !PL_minus_c)
1632 call_list(oldscope, PL_endav);
1634 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1635 dump_mstats("after execution: ");
1637 ret = STATUS_NATIVE_EXPORT;
1641 POPSTACK_TO(PL_mainstack);
1644 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1654 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1656 S_vrun_body(pTHX_ va_list args)
1658 I32 oldscope = va_arg(args, I32);
1660 return run_body(oldscope);
1666 S_run_body(pTHX_ I32 oldscope)
1668 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1669 PL_sawampersand ? "Enabling" : "Omitting"));
1671 if (!PL_restartop) {
1672 DEBUG_x(dump_all());
1673 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1674 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1678 #ifdef MACOS_TRADITIONAL
1679 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1680 (gMacPerl_ErrorFormat ? "# " : ""),
1681 MacPerl_MPWFileName(PL_origfilename));
1683 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1687 if (PERLDB_SINGLE && PL_DBsingle)
1688 sv_setiv(PL_DBsingle, 1);
1690 call_list(oldscope, PL_initav);
1696 PL_op = PL_restartop;
1700 else if (PL_main_start) {
1701 CvDEPTH(PL_main_cv) = 1;
1702 PL_op = PL_main_start;
1712 =head1 SV Manipulation Functions
1714 =for apidoc p||get_sv
1716 Returns the SV of the specified Perl scalar. If C<create> is set and the
1717 Perl variable does not exist then it will be created. If C<create> is not
1718 set and the variable does not exist then NULL is returned.
1724 Perl_get_sv(pTHX_ const char *name, I32 create)
1727 #ifdef USE_5005THREADS
1728 if (name[1] == '\0' && !isALPHA(name[0])) {
1729 PADOFFSET tmp = find_threadsv(name);
1730 if (tmp != NOT_IN_PAD)
1731 return THREADSV(tmp);
1733 #endif /* USE_5005THREADS */
1734 gv = gv_fetchpv(name, create, SVt_PV);
1741 =head1 Array Manipulation Functions
1743 =for apidoc p||get_av
1745 Returns the AV of the specified Perl array. If C<create> is set and the
1746 Perl variable does not exist then it will be created. If C<create> is not
1747 set and the variable does not exist then NULL is returned.
1753 Perl_get_av(pTHX_ const char *name, I32 create)
1755 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1764 =head1 Hash Manipulation Functions
1766 =for apidoc p||get_hv
1768 Returns the HV of the specified Perl hash. If C<create> is set and the
1769 Perl variable does not exist then it will be created. If C<create> is not
1770 set and the variable does not exist then NULL is returned.
1776 Perl_get_hv(pTHX_ const char *name, I32 create)
1778 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1787 =head1 CV Manipulation Functions
1789 =for apidoc p||get_cv
1791 Returns the CV of the specified Perl subroutine. If C<create> is set and
1792 the Perl subroutine does not exist then it will be declared (which has the
1793 same effect as saying C<sub name;>). If C<create> is not set and the
1794 subroutine does not exist then NULL is returned.
1800 Perl_get_cv(pTHX_ const char *name, I32 create)
1802 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1803 /* XXX unsafe for threads if eval_owner isn't held */
1804 /* XXX this is probably not what they think they're getting.
1805 * It has the same effect as "sub name;", i.e. just a forward
1807 if (create && !GvCVu(gv))
1808 return newSUB(start_subparse(FALSE, 0),
1809 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1817 /* Be sure to refetch the stack pointer after calling these routines. */
1821 =head1 Callback Functions
1823 =for apidoc p||call_argv
1825 Performs a callback to the specified Perl sub. See L<perlcall>.
1831 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1833 /* See G_* flags in cop.h */
1834 /* null terminated arg list */
1841 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1846 return call_pv(sub_name, flags);
1850 =for apidoc p||call_pv
1852 Performs a callback to the specified Perl sub. See L<perlcall>.
1858 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1859 /* name of the subroutine */
1860 /* See G_* flags in cop.h */
1862 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1866 =for apidoc p||call_method
1868 Performs a callback to the specified Perl method. The blessed object must
1869 be on the stack. See L<perlcall>.
1875 Perl_call_method(pTHX_ const char *methname, I32 flags)
1876 /* name of the subroutine */
1877 /* See G_* flags in cop.h */
1879 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1882 /* May be called with any of a CV, a GV, or an SV containing the name. */
1884 =for apidoc p||call_sv
1886 Performs a callback to the Perl sub whose name is in the SV. See
1893 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1894 /* See G_* flags in cop.h */
1897 LOGOP myop; /* fake syntax tree node */
1900 volatile I32 retval = 0;
1902 bool oldcatch = CATCH_GET;
1907 if (flags & G_DISCARD) {
1912 Zero(&myop, 1, LOGOP);
1913 myop.op_next = Nullop;
1914 if (!(flags & G_NOARGS))
1915 myop.op_flags |= OPf_STACKED;
1916 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1917 (flags & G_ARRAY) ? OPf_WANT_LIST :
1922 EXTEND(PL_stack_sp, 1);
1923 *++PL_stack_sp = sv;
1925 oldscope = PL_scopestack_ix;
1927 if (PERLDB_SUB && PL_curstash != PL_debstash
1928 /* Handle first BEGIN of -d. */
1929 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1930 /* Try harder, since this may have been a sighandler, thus
1931 * curstash may be meaningless. */
1932 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1933 && !(flags & G_NODEBUG))
1934 PL_op->op_private |= OPpENTERSUB_DB;
1936 if (flags & G_METHOD) {
1937 Zero(&method_op, 1, UNOP);
1938 method_op.op_next = PL_op;
1939 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1940 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1941 PL_op = (OP*)&method_op;
1944 if (!(flags & G_EVAL)) {
1946 call_body((OP*)&myop, FALSE);
1947 retval = PL_stack_sp - (PL_stack_base + oldmark);
1948 CATCH_SET(oldcatch);
1951 myop.op_other = (OP*)&myop;
1953 /* we're trying to emulate pp_entertry() here */
1955 register PERL_CONTEXT *cx;
1956 I32 gimme = GIMME_V;
1961 push_return(Nullop);
1962 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1964 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1966 PL_in_eval = EVAL_INEVAL;
1967 if (flags & G_KEEPERR)
1968 PL_in_eval |= EVAL_KEEPERR;
1974 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1976 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1983 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1985 call_body((OP*)&myop, FALSE);
1987 retval = PL_stack_sp - (PL_stack_base + oldmark);
1988 if (!(flags & G_KEEPERR))
1995 /* my_exit() was called */
1996 PL_curstash = PL_defstash;
1999 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2000 Perl_croak(aTHX_ "Callback called exit");
2005 PL_op = PL_restartop;
2009 PL_stack_sp = PL_stack_base + oldmark;
2010 if (flags & G_ARRAY)
2014 *++PL_stack_sp = &PL_sv_undef;
2019 if (PL_scopestack_ix > oldscope) {
2023 register PERL_CONTEXT *cx;
2035 if (flags & G_DISCARD) {
2036 PL_stack_sp = PL_stack_base + oldmark;
2045 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2047 S_vcall_body(pTHX_ va_list args)
2049 OP *myop = va_arg(args, OP*);
2050 int is_eval = va_arg(args, int);
2052 call_body(myop, is_eval);
2058 S_call_body(pTHX_ OP *myop, int is_eval)
2060 if (PL_op == myop) {
2062 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2064 PL_op = Perl_pp_entersub(aTHX); /* this does */
2070 /* Eval a string. The G_EVAL flag is always assumed. */
2073 =for apidoc p||eval_sv
2075 Tells Perl to C<eval> the string in the SV.
2081 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2083 /* See G_* flags in cop.h */
2086 UNOP myop; /* fake syntax tree node */
2087 volatile I32 oldmark = SP - PL_stack_base;
2088 volatile I32 retval = 0;
2094 if (flags & G_DISCARD) {
2101 Zero(PL_op, 1, UNOP);
2102 EXTEND(PL_stack_sp, 1);
2103 *++PL_stack_sp = sv;
2104 oldscope = PL_scopestack_ix;
2106 if (!(flags & G_NOARGS))
2107 myop.op_flags = OPf_STACKED;
2108 myop.op_next = Nullop;
2109 myop.op_type = OP_ENTEREVAL;
2110 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2111 (flags & G_ARRAY) ? OPf_WANT_LIST :
2113 if (flags & G_KEEPERR)
2114 myop.op_flags |= OPf_SPECIAL;
2116 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2118 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2125 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2127 call_body((OP*)&myop,TRUE);
2129 retval = PL_stack_sp - (PL_stack_base + oldmark);
2130 if (!(flags & G_KEEPERR))
2137 /* my_exit() was called */
2138 PL_curstash = PL_defstash;
2141 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2142 Perl_croak(aTHX_ "Callback called exit");
2147 PL_op = PL_restartop;
2151 PL_stack_sp = PL_stack_base + oldmark;
2152 if (flags & G_ARRAY)
2156 *++PL_stack_sp = &PL_sv_undef;
2162 if (flags & G_DISCARD) {
2163 PL_stack_sp = PL_stack_base + oldmark;
2173 =for apidoc p||eval_pv
2175 Tells Perl to C<eval> the given string and return an SV* result.
2181 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2184 SV* sv = newSVpv(p, 0);
2186 eval_sv(sv, G_SCALAR);
2193 if (croak_on_error && SvTRUE(ERRSV)) {
2195 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2201 /* Require a module. */
2204 =head1 Embedding Functions
2206 =for apidoc p||require_pv
2208 Tells Perl to C<require> the file named by the string argument. It is
2209 analogous to the Perl code C<eval "require '$file'">. It's even
2210 implemented that way; consider using load_module instead.
2215 Perl_require_pv(pTHX_ const char *pv)
2219 PUSHSTACKi(PERLSI_REQUIRE);
2221 sv = sv_newmortal();
2222 sv_setpv(sv, "require '");
2225 eval_sv(sv, G_DISCARD);
2231 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2235 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2236 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2240 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2242 /* This message really ought to be max 23 lines.
2243 * Removed -h because the user already knows that option. Others? */
2245 static char *usage_msg[] = {
2246 "-0[octal] specify record separator (\\0, if no argument)",
2247 "-a autosplit mode with -n or -p (splits $_ into @F)",
2248 "-C enable native wide character system interfaces",
2249 "-c check syntax only (runs BEGIN and CHECK blocks)",
2250 "-d[:debugger] run program under debugger",
2251 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2252 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2253 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2254 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2255 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2256 "-l[octal] enable line ending processing, specifies line terminator",
2257 "-[mM][-]module execute `use/no module...' before executing program",
2258 "-n assume 'while (<>) { ... }' loop around program",
2259 "-p assume loop like -n but print line also, like sed",
2260 "-P run program through C preprocessor before compilation",
2261 "-s enable rudimentary parsing for switches after programfile",
2262 "-S look for programfile using PATH environment variable",
2263 "-T enable tainting checks",
2264 "-t enable tainting warnings",
2265 "-u dump core after parsing program",
2266 "-U allow unsafe operations",
2267 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2268 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2269 "-w enable many useful warnings (RECOMMENDED)",
2270 "-W enable all warnings",
2271 "-X disable all warnings",
2272 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2276 char **p = usage_msg;
2278 PerlIO_printf(PerlIO_stdout(),
2279 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2282 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2285 /* convert a string of -D options (or digits) into an int.
2286 * sets *s to point to the char after the options */
2290 Perl_get_debug_opts(pTHX_ char **s)
2294 /* if adding extra options, remember to update DEBUG_MASK */
2295 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2297 for (; isALNUM(**s); (*s)++) {
2298 char *d = strchr(debopts,**s);
2300 i |= 1 << (d - debopts);
2301 else if (ckWARN_d(WARN_DEBUGGING))
2302 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2303 "invalid option -D%c\n", **s);
2308 for (; isALNUM(**s); (*s)++) ;
2311 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2312 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2313 "-Dp not implemented on this platform\n");
2319 /* This routine handles any switches that can be given during run */
2322 Perl_moreswitches(pTHX_ char *s)
2332 SvREFCNT_dec(PL_rs);
2333 if (s[1] == 'x' && s[2]) {
2337 for (s += 2, e = s; *e; e++);
2339 flags = PERL_SCAN_SILENT_ILLDIGIT;
2340 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2341 if (s + numlen < e) {
2342 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2346 PL_rs = newSVpvn("", 0);
2347 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2348 tmps = (U8*)SvPVX(PL_rs);
2349 uvchr_to_utf8(tmps, rschar);
2350 SvCUR_set(PL_rs, UNISKIP(rschar));
2355 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2356 if (rschar & ~((U8)~0))
2357 PL_rs = &PL_sv_undef;
2358 else if (!rschar && numlen >= 2)
2359 PL_rs = newSVpvn("", 0);
2361 char ch = (char)rschar;
2362 PL_rs = newSVpvn(&ch, 1);
2369 PL_unicode = parse_unicode_opts(&s);
2374 while (*s && !isSPACE(*s)) ++s;
2376 PL_splitstr = savepv(PL_splitstr);
2389 /* The following permits -d:Mod to accepts arguments following an =
2390 in the fashion that -MSome::Mod does. */
2391 if (*s == ':' || *s == '=') {
2394 sv = newSVpv("use Devel::", 0);
2396 /* We now allow -d:Module=Foo,Bar */
2397 while(isALNUM(*s) || *s==':') ++s;
2399 sv_catpv(sv, start);
2401 sv_catpvn(sv, start, s-start);
2402 sv_catpv(sv, " split(/,/,q{");
2407 my_setenv("PERL5DB", SvPV(sv, PL_na));
2410 PL_perldb = PERLDB_ALL;
2419 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
2420 #else /* !DEBUGGING */
2421 if (ckWARN_d(WARN_DEBUGGING))
2422 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2423 "Recompile perl with -DDEBUGGING to use -D switch\n");
2424 for (s++; isALNUM(*s); s++) ;
2430 usage(PL_origargv[0]);
2434 Safefree(PL_inplace);
2435 #if defined(__CYGWIN__) /* do backup extension automagically */
2436 if (*(s+1) == '\0') {
2437 PL_inplace = savepv(".bak");
2440 #endif /* __CYGWIN__ */
2441 PL_inplace = savepv(s+1);
2443 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2446 if (*s == '-') /* Additional switches on #! line. */
2450 case 'I': /* -I handled both here and in parse_body() */
2453 while (*s && isSPACE(*s))
2458 /* ignore trailing spaces (possibly followed by other switches) */
2460 for (e = p; *e && !isSPACE(*e); e++) ;
2464 } while (*p && *p != '-');
2465 e = savepvn(s, e-s);
2466 incpush(e, TRUE, TRUE, FALSE);
2473 Perl_croak(aTHX_ "No directory specified for -I");
2479 SvREFCNT_dec(PL_ors_sv);
2484 PL_ors_sv = newSVpvn("\n",1);
2485 numlen = 3 + (*s == '0');
2486 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2490 if (RsPARA(PL_rs)) {
2491 PL_ors_sv = newSVpvn("\n\n",2);
2494 PL_ors_sv = newSVsv(PL_rs);
2501 PL_preambleav = newAV();
2503 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
2507 av_push(PL_preambleav, sv);
2510 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
2513 forbid_setid("-M"); /* XXX ? */
2516 forbid_setid("-m"); /* XXX ? */
2521 /* -M-foo == 'no foo' */
2522 if (*s == '-') { use = "no "; ++s; }
2523 sv = newSVpv(use,0);
2525 /* We allow -M'Module qw(Foo Bar)' */
2526 while(isALNUM(*s) || *s==':') ++s;
2528 sv_catpv(sv, start);
2529 if (*(start-1) == 'm') {
2531 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2532 sv_catpv( sv, " ()");
2536 Perl_croak(aTHX_ "Module name required with -%c option",
2538 sv_catpvn(sv, start, s-start);
2539 sv_catpv(sv, " split(/,/,q{");
2545 PL_preambleav = newAV();
2546 av_push(PL_preambleav, sv);
2549 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2561 PL_doswitches = TRUE;
2575 #ifdef MACOS_TRADITIONAL
2576 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2578 PL_do_undump = TRUE;
2587 PerlIO_printf(PerlIO_stdout(),
2588 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2589 PL_patchlevel, ARCHNAME));
2591 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2592 PerlIO_printf(PerlIO_stdout(),
2593 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2594 PerlIO_printf(PerlIO_stdout(),
2595 Perl_form(aTHX_ " built under %s at %s %s\n",
2596 OSNAME, __DATE__, __TIME__));
2597 PerlIO_printf(PerlIO_stdout(),
2598 Perl_form(aTHX_ " OS Specific Release: %s\n",
2602 #if defined(LOCAL_PATCH_COUNT)
2603 if (LOCAL_PATCH_COUNT > 0)
2604 PerlIO_printf(PerlIO_stdout(),
2605 "\n(with %d registered patch%s, "
2606 "see perl -V for more detail)",
2607 (int)LOCAL_PATCH_COUNT,
2608 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2611 PerlIO_printf(PerlIO_stdout(),
2612 "\n\nCopyright 1987-2003, Larry Wall\n");
2613 #ifdef MACOS_TRADITIONAL
2614 PerlIO_printf(PerlIO_stdout(),
2615 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2616 "maintained by Chris Nandor\n");
2619 PerlIO_printf(PerlIO_stdout(),
2620 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2623 PerlIO_printf(PerlIO_stdout(),
2624 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2625 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2628 PerlIO_printf(PerlIO_stdout(),
2629 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2630 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2633 PerlIO_printf(PerlIO_stdout(),
2634 "atariST series port, ++jrb bammi@cadence.com\n");
2637 PerlIO_printf(PerlIO_stdout(),
2638 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2641 PerlIO_printf(PerlIO_stdout(),
2642 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2645 PerlIO_printf(PerlIO_stdout(),
2646 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2649 PerlIO_printf(PerlIO_stdout(),
2650 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2653 PerlIO_printf(PerlIO_stdout(),
2654 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2657 PerlIO_printf(PerlIO_stdout(),
2658 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2661 PerlIO_printf(PerlIO_stdout(),
2662 "MiNT port by Guido Flohr, 1997-1999\n");
2665 PerlIO_printf(PerlIO_stdout(),
2666 "EPOC port by Olaf Flebbe, 1999-2002\n");
2669 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2670 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
2673 #ifdef BINARY_BUILD_NOTICE
2674 BINARY_BUILD_NOTICE;
2676 PerlIO_printf(PerlIO_stdout(),
2678 Perl may be copied only under the terms of either the Artistic License or the\n\
2679 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2680 Complete documentation for Perl, including FAQ lists, should be found on\n\
2681 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2682 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2685 if (! (PL_dowarn & G_WARN_ALL_MASK))
2686 PL_dowarn |= G_WARN_ON;
2690 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2691 if (!specialWARN(PL_compiling.cop_warnings))
2692 SvREFCNT_dec(PL_compiling.cop_warnings);
2693 PL_compiling.cop_warnings = pWARN_ALL ;
2697 PL_dowarn = G_WARN_ALL_OFF;
2698 if (!specialWARN(PL_compiling.cop_warnings))
2699 SvREFCNT_dec(PL_compiling.cop_warnings);
2700 PL_compiling.cop_warnings = pWARN_NONE ;
2705 if (s[1] == '-') /* Additional switches on #! line. */
2710 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2716 #ifdef ALTERNATE_SHEBANG
2717 case 'S': /* OS/2 needs -S on "extproc" line. */
2725 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2730 /* compliments of Tom Christiansen */
2732 /* unexec() can be found in the Gnu emacs distribution */
2733 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2736 Perl_my_unexec(pTHX)
2744 prog = newSVpv(BIN_EXP, 0);
2745 sv_catpv(prog, "/perl");
2746 file = newSVpv(PL_origfilename, 0);
2747 sv_catpv(file, ".perldump");
2749 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2750 /* unexec prints msg to stderr in case of failure */
2751 PerlProc_exit(status);
2754 # include <lib$routines.h>
2755 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2757 ABORT(); /* for use with undump */
2762 /* initialize curinterp */
2768 # define PERLVAR(var,type)
2769 # define PERLVARA(var,n,type)
2770 # if defined(PERL_IMPLICIT_CONTEXT)
2771 # if defined(USE_5005THREADS)
2772 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2773 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2774 # else /* !USE_5005THREADS */
2775 # define PERLVARI(var,type,init) aTHX->var = init;
2776 # define PERLVARIC(var,type,init) aTHX->var = init;
2777 # endif /* USE_5005THREADS */
2779 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2780 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2782 # include "intrpvar.h"
2783 # ifndef USE_5005THREADS
2784 # include "thrdvar.h"
2791 # define PERLVAR(var,type)
2792 # define PERLVARA(var,n,type)
2793 # define PERLVARI(var,type,init) PL_##var = init;
2794 # define PERLVARIC(var,type,init) PL_##var = init;
2795 # include "intrpvar.h"
2796 # ifndef USE_5005THREADS
2797 # include "thrdvar.h"
2808 S_init_main_stash(pTHX)
2812 PL_curstash = PL_defstash = newHV();
2813 PL_curstname = newSVpvn("main",4);
2814 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2815 SvREFCNT_dec(GvHV(gv));
2816 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2818 HvNAME(PL_defstash) = savepv("main");
2819 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2820 GvMULTI_on(PL_incgv);
2821 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2822 GvMULTI_on(PL_hintgv);
2823 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2824 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2825 GvMULTI_on(PL_errgv);
2826 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2827 GvMULTI_on(PL_replgv);
2828 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2829 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2830 sv_setpvn(ERRSV, "", 0);
2831 PL_curstash = PL_defstash;
2832 CopSTASH_set(&PL_compiling, PL_defstash);
2833 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2834 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2835 /* We must init $/ before switches are processed. */
2836 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2840 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2844 char *cpp_discard_flag;
2850 PL_origfilename = savepv("-e");
2853 /* if find_script() returns, it returns a malloc()-ed value */
2854 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2856 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2857 char *s = scriptname + 8;
2858 *fdscript = atoi(s);
2862 scriptname = savepv(s + 1);
2863 Safefree(PL_origfilename);
2864 PL_origfilename = scriptname;
2869 CopFILE_free(PL_curcop);
2870 CopFILE_set(PL_curcop, PL_origfilename);
2871 if (strEQ(PL_origfilename,"-"))
2873 if (*fdscript >= 0) {
2874 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2875 # if defined(HAS_FCNTL) && defined(F_SETFD)
2877 /* ensure close-on-exec */
2878 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2881 else if (PL_preprocess) {
2882 char *cpp_cfg = CPPSTDIN;
2883 SV *cpp = newSVpvn("",0);
2884 SV *cmd = NEWSV(0,0);
2886 if (strEQ(cpp_cfg, "cppstdin"))
2887 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2888 sv_catpv(cpp, cpp_cfg);
2891 sv_catpvn(sv, "-I", 2);
2892 sv_catpv(sv,PRIVLIB_EXP);
2895 DEBUG_P(PerlIO_printf(Perl_debug_log,
2896 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2897 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2899 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2906 cpp_discard_flag = "";
2908 cpp_discard_flag = "-C";
2912 perl = os2_execname(aTHX);
2914 perl = PL_origargv[0];
2918 /* This strips off Perl comments which might interfere with
2919 the C pre-processor, including #!. #line directives are
2920 deliberately stripped to avoid confusion with Perl's version
2921 of #line. FWP played some golf with it so it will fit
2922 into VMS's 255 character buffer.
2925 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2927 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2929 Perl_sv_setpvf(aTHX_ cmd, "\
2930 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2931 perl, quote, code, quote, scriptname, cpp,
2932 cpp_discard_flag, sv, CPPMINUS);
2934 PL_doextract = FALSE;
2935 # ifdef IAMSUID /* actually, this is caught earlier */
2936 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2938 (void)seteuid(PL_uid); /* musn't stay setuid root */
2940 # ifdef HAS_SETREUID
2941 (void)setreuid((Uid_t)-1, PL_uid);
2943 # ifdef HAS_SETRESUID
2944 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2946 PerlProc_setuid(PL_uid);
2950 if (PerlProc_geteuid() != PL_uid)
2951 Perl_croak(aTHX_ "Can't do seteuid!\n");
2953 # endif /* IAMSUID */
2955 DEBUG_P(PerlIO_printf(Perl_debug_log,
2956 "PL_preprocess: cmd=\"%s\"\n",
2959 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2963 else if (!*scriptname) {
2964 forbid_setid("program input from stdin");
2965 PL_rsfp = PerlIO_stdin();
2968 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2969 # if defined(HAS_FCNTL) && defined(F_SETFD)
2971 /* ensure close-on-exec */
2972 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2977 # ifndef IAMSUID /* in case script is not readable before setuid */
2979 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2980 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2983 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2984 BIN_EXP, (int)PERL_REVISION,
2986 (int)PERL_SUBVERSION), PL_origargv);
2987 Perl_croak(aTHX_ "Can't do setuid\n");
2993 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2996 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2997 CopFILE(PL_curcop), Strerror(errno));
3003 * I_SYSSTATVFS HAS_FSTATVFS
3005 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3006 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3007 * here so that metaconfig picks them up. */
3011 S_fd_on_nosuid_fs(pTHX_ int fd)
3013 int check_okay = 0; /* able to do all the required sys/libcalls */
3014 int on_nosuid = 0; /* the fd is on a nosuid fs */
3016 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
3017 * fstatvfs() is UNIX98.
3018 * fstatfs() is 4.3 BSD.
3019 * ustat()+getmnt() is pre-4.3 BSD.
3020 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3021 * an irrelevant filesystem while trying to reach the right one.
3024 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3026 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3027 defined(HAS_FSTATVFS)
3028 # define FD_ON_NOSUID_CHECK_OKAY
3029 struct statvfs stfs;
3031 check_okay = fstatvfs(fd, &stfs) == 0;
3032 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3033 # endif /* fstatvfs */
3035 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3036 defined(PERL_MOUNT_NOSUID) && \
3037 defined(HAS_FSTATFS) && \
3038 defined(HAS_STRUCT_STATFS) && \
3039 defined(HAS_STRUCT_STATFS_F_FLAGS)
3040 # define FD_ON_NOSUID_CHECK_OKAY
3043 check_okay = fstatfs(fd, &stfs) == 0;
3044 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3045 # endif /* fstatfs */
3047 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3048 defined(PERL_MOUNT_NOSUID) && \
3049 defined(HAS_FSTAT) && \
3050 defined(HAS_USTAT) && \
3051 defined(HAS_GETMNT) && \
3052 defined(HAS_STRUCT_FS_DATA) && \
3054 # define FD_ON_NOSUID_CHECK_OKAY
3057 if (fstat(fd, &fdst) == 0) {
3059 if (ustat(fdst.st_dev, &us) == 0) {
3061 /* NOSTAT_ONE here because we're not examining fields which
3062 * vary between that case and STAT_ONE. */
3063 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3064 size_t cmplen = sizeof(us.f_fname);
3065 if (sizeof(fsd.fd_req.path) < cmplen)
3066 cmplen = sizeof(fsd.fd_req.path);
3067 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3068 fdst.st_dev == fsd.fd_req.dev) {
3070 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3076 # endif /* fstat+ustat+getmnt */
3078 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3079 defined(HAS_GETMNTENT) && \
3080 defined(HAS_HASMNTOPT) && \
3081 defined(MNTOPT_NOSUID)
3082 # define FD_ON_NOSUID_CHECK_OKAY
3083 FILE *mtab = fopen("/etc/mtab", "r");
3084 struct mntent *entry;
3087 if (mtab && (fstat(fd, &stb) == 0)) {
3088 while (entry = getmntent(mtab)) {
3089 if (stat(entry->mnt_dir, &fsb) == 0
3090 && fsb.st_dev == stb.st_dev)
3092 /* found the filesystem */
3094 if (hasmntopt(entry, MNTOPT_NOSUID))
3097 } /* A single fs may well fail its stat(). */
3102 # endif /* getmntent+hasmntopt */
3105 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3108 #endif /* IAMSUID */
3111 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3117 /* do we need to emulate setuid on scripts? */
3119 /* This code is for those BSD systems that have setuid #! scripts disabled
3120 * in the kernel because of a security problem. Merely defining DOSUID
3121 * in perl will not fix that problem, but if you have disabled setuid
3122 * scripts in the kernel, this will attempt to emulate setuid and setgid
3123 * on scripts that have those now-otherwise-useless bits set. The setuid
3124 * root version must be called suidperl or sperlN.NNN. If regular perl
3125 * discovers that it has opened a setuid script, it calls suidperl with
3126 * the same argv that it had. If suidperl finds that the script it has
3127 * just opened is NOT setuid root, it sets the effective uid back to the
3128 * uid. We don't just make perl setuid root because that loses the
3129 * effective uid we had before invoking perl, if it was different from the
3132 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3133 * be defined in suidperl only. suidperl must be setuid root. The
3134 * Configure script will set this up for you if you want it.
3140 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3141 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3142 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3147 #ifndef HAS_SETREUID
3148 /* On this access check to make sure the directories are readable,
3149 * there is actually a small window that the user could use to make
3150 * filename point to an accessible directory. So there is a faint
3151 * chance that someone could execute a setuid script down in a
3152 * non-accessible directory. I don't know what to do about that.
3153 * But I don't think it's too important. The manual lies when
3154 * it says access() is useful in setuid programs.
3156 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3157 Perl_croak(aTHX_ "Permission denied");
3159 /* If we can swap euid and uid, then we can determine access rights
3160 * with a simple stat of the file, and then compare device and
3161 * inode to make sure we did stat() on the same file we opened.
3162 * Then we just have to make sure he or she can execute it.
3169 setreuid(PL_euid,PL_uid) < 0
3172 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3175 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3176 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3177 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3178 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3179 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3180 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3181 Perl_croak(aTHX_ "Permission denied");
3183 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3184 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3185 (void)PerlIO_close(PL_rsfp);
3186 Perl_croak(aTHX_ "Permission denied\n");
3190 setreuid(PL_uid,PL_euid) < 0
3192 # if defined(HAS_SETRESUID)
3193 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3196 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3197 Perl_croak(aTHX_ "Can't reswap uid and euid");
3198 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3199 Perl_croak(aTHX_ "Permission denied\n");
3201 #endif /* HAS_SETREUID */
3202 #endif /* IAMSUID */
3204 if (!S_ISREG(PL_statbuf.st_mode))
3205 Perl_croak(aTHX_ "Permission denied");
3206 if (PL_statbuf.st_mode & S_IWOTH)
3207 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3208 PL_doswitches = FALSE; /* -s is insecure in suid */
3209 CopLINE_inc(PL_curcop);
3210 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3211 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3212 Perl_croak(aTHX_ "No #! line");
3213 s = SvPV(PL_linestr,n_a)+2;
3215 while (!isSPACE(*s)) s++;
3216 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3217 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3218 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3219 Perl_croak(aTHX_ "Not a perl script");
3220 while (*s == ' ' || *s == '\t') s++;
3222 * #! arg must be what we saw above. They can invoke it by
3223 * mentioning suidperl explicitly, but they may not add any strange
3224 * arguments beyond what #! says if they do invoke suidperl that way.
3226 len = strlen(validarg);
3227 if (strEQ(validarg," PHOOEY ") ||
3228 strnNE(s,validarg,len) || !isSPACE(s[len]))
3229 Perl_croak(aTHX_ "Args must match #! line");
3232 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3233 PL_euid == PL_statbuf.st_uid)
3235 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3236 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3237 #endif /* IAMSUID */
3239 if (PL_euid) { /* oops, we're not the setuid root perl */
3240 (void)PerlIO_close(PL_rsfp);
3243 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3244 (int)PERL_REVISION, (int)PERL_VERSION,
3245 (int)PERL_SUBVERSION), PL_origargv);
3247 Perl_croak(aTHX_ "Can't do setuid\n");
3250 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3252 (void)setegid(PL_statbuf.st_gid);
3255 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3257 #ifdef HAS_SETRESGID
3258 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3260 PerlProc_setgid(PL_statbuf.st_gid);
3264 if (PerlProc_getegid() != PL_statbuf.st_gid)
3265 Perl_croak(aTHX_ "Can't do setegid!\n");
3267 if (PL_statbuf.st_mode & S_ISUID) {
3268 if (PL_statbuf.st_uid != PL_euid)
3270 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3273 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3275 #ifdef HAS_SETRESUID
3276 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3278 PerlProc_setuid(PL_statbuf.st_uid);
3282 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3283 Perl_croak(aTHX_ "Can't do seteuid!\n");
3285 else if (PL_uid) { /* oops, mustn't run as root */
3287 (void)seteuid((Uid_t)PL_uid);
3290 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3292 #ifdef HAS_SETRESUID
3293 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3295 PerlProc_setuid((Uid_t)PL_uid);
3299 if (PerlProc_geteuid() != PL_uid)
3300 Perl_croak(aTHX_ "Can't do seteuid!\n");
3303 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3304 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3307 else if (PL_preprocess)
3308 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3309 else if (fdscript >= 0)
3310 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3312 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3314 /* We absolutely must clear out any saved ids here, so we */
3315 /* exec the real perl, substituting fd script for scriptname. */
3316 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3317 PerlIO_rewind(PL_rsfp);
3318 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3319 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3320 if (!PL_origargv[which])
3321 Perl_croak(aTHX_ "Permission denied");
3322 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3323 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3324 #if defined(HAS_FCNTL) && defined(F_SETFD)
3325 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3327 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3328 (int)PERL_REVISION, (int)PERL_VERSION,
3329 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3330 Perl_croak(aTHX_ "Can't do setuid\n");
3331 #endif /* IAMSUID */
3333 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3334 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3335 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3336 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3338 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3341 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3342 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3343 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3344 /* not set-id, must be wrapped */
3350 S_find_beginning(pTHX)
3352 register char *s, *s2;
3353 #ifdef MACOS_TRADITIONAL
3357 /* skip forward in input to the real script? */
3360 #ifdef MACOS_TRADITIONAL
3361 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3363 while (PL_doextract || gMacPerl_AlwaysExtract) {
3364 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3365 if (!gMacPerl_AlwaysExtract)
3366 Perl_croak(aTHX_ "No Perl script found in input\n");
3368 if (PL_doextract) /* require explicit override ? */
3369 if (!OverrideExtract(PL_origfilename))
3370 Perl_croak(aTHX_ "User aborted script\n");
3372 PL_doextract = FALSE;
3374 /* Pater peccavi, file does not have #! */
3375 PerlIO_rewind(PL_rsfp);
3380 while (PL_doextract) {
3381 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3382 Perl_croak(aTHX_ "No Perl script found in input\n");
3385 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3386 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3387 PL_doextract = FALSE;
3388 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3390 while (*s == ' ' || *s == '\t') s++;
3392 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3393 if (strnEQ(s2-4,"perl",4))
3395 while ((s = moreswitches(s)))
3398 #ifdef MACOS_TRADITIONAL
3399 /* We are always searching for the #!perl line in MacPerl,
3400 * so if we find it, still keep the line count correct
3401 * by counting lines we already skipped over
3403 for (; maclines > 0 ; maclines--)
3404 PerlIO_ungetc(PL_rsfp, '\n');
3408 /* gMacPerl_AlwaysExtract is false in MPW tool */
3409 } else if (gMacPerl_AlwaysExtract) {
3420 PL_uid = PerlProc_getuid();
3421 PL_euid = PerlProc_geteuid();
3422 PL_gid = PerlProc_getgid();
3423 PL_egid = PerlProc_getegid();
3425 PL_uid |= PL_gid << 16;
3426 PL_euid |= PL_egid << 16;
3428 /* Should not happen: */
3429 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3430 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3433 /* This is used very early in the lifetime of the program,
3434 * before even the options are parsed, so PL_tainting has
3435 * not been initialized properly. The variable PL_earlytaint
3436 * is set early in main() to the result of this function. */
3438 Perl_doing_taint(int argc, char *argv[], char *envp[])
3440 #ifndef PERL_IMPLICIT_SYS
3441 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3442 * before we have an interpreter-- and the whole point of this
3443 * function is to be called at such an early stage. If you are on
3444 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3445 * "tainted because running with altered effective ids', you'll
3446 * have to add your own checks somewhere in here. The two most
3447 * known samples of 'implicitness' are Win32 and NetWare, neither
3448 * of which has much of concept of 'uids'. */
3449 int uid = PerlProc_getuid();
3450 int euid = PerlProc_geteuid();
3451 int gid = PerlProc_getgid();
3452 int egid = PerlProc_getegid();
3458 if (uid && (euid != uid || egid != gid))
3460 #endif /* !PERL_IMPLICIT_SYS */
3461 /* This is a really primitive check; environment gets ignored only
3462 * if -T are the first chars together; otherwise one gets
3463 * "Too late" message. */
3464 if ( argc > 1 && argv[1][0] == '-'
3465 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3471 S_forbid_setid(pTHX_ char *s)
3473 if (PL_euid != PL_uid)
3474 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3475 if (PL_egid != PL_gid)
3476 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3480 Perl_init_debugger(pTHX)
3482 HV *ostash = PL_curstash;
3484 PL_curstash = PL_debstash;
3485 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3486 AvREAL_off(PL_dbargs);
3487 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3488 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3489 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3490 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3491 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3492 sv_setiv(PL_DBsingle, 0);
3493 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3494 sv_setiv(PL_DBtrace, 0);
3495 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3496 sv_setiv(PL_DBsignal, 0);
3497 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3498 sv_setiv(PL_DBassertion, 0);
3499 PL_curstash = ostash;
3502 #ifndef STRESS_REALLOC
3503 #define REASONABLE(size) (size)
3505 #define REASONABLE(size) (1) /* unreasonable */
3509 Perl_init_stacks(pTHX)
3511 /* start with 128-item stack and 8K cxstack */
3512 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3513 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3514 PL_curstackinfo->si_type = PERLSI_MAIN;
3515 PL_curstack = PL_curstackinfo->si_stack;
3516 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3518 PL_stack_base = AvARRAY(PL_curstack);
3519 PL_stack_sp = PL_stack_base;
3520 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3522 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3525 PL_tmps_max = REASONABLE(128);
3527 New(54,PL_markstack,REASONABLE(32),I32);
3528 PL_markstack_ptr = PL_markstack;
3529 PL_markstack_max = PL_markstack + REASONABLE(32);
3533 New(54,PL_scopestack,REASONABLE(32),I32);
3534 PL_scopestack_ix = 0;
3535 PL_scopestack_max = REASONABLE(32);
3537 New(54,PL_savestack,REASONABLE(128),ANY);
3538 PL_savestack_ix = 0;
3539 PL_savestack_max = REASONABLE(128);
3541 New(54,PL_retstack,REASONABLE(16),OP*);
3543 PL_retstack_max = REASONABLE(16);
3551 while (PL_curstackinfo->si_next)
3552 PL_curstackinfo = PL_curstackinfo->si_next;
3553 while (PL_curstackinfo) {
3554 PERL_SI *p = PL_curstackinfo->si_prev;
3555 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3556 Safefree(PL_curstackinfo->si_cxstack);
3557 Safefree(PL_curstackinfo);
3558 PL_curstackinfo = p;
3560 Safefree(PL_tmps_stack);
3561 Safefree(PL_markstack);
3562 Safefree(PL_scopestack);
3563 Safefree(PL_savestack);
3564 Safefree(PL_retstack);
3573 lex_start(PL_linestr);
3575 PL_subname = newSVpvn("main",4);
3579 S_init_predump_symbols(pTHX)
3584 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3585 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3586 GvMULTI_on(PL_stdingv);
3587 io = GvIOp(PL_stdingv);
3588 IoTYPE(io) = IoTYPE_RDONLY;
3589 IoIFP(io) = PerlIO_stdin();
3590 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3592 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3594 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3597 IoTYPE(io) = IoTYPE_WRONLY;
3598 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3600 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3602 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3604 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3605 GvMULTI_on(PL_stderrgv);
3606 io = GvIOp(PL_stderrgv);
3607 IoTYPE(io) = IoTYPE_WRONLY;
3608 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3609 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3611 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3613 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3616 Safefree(PL_osname);
3617 PL_osname = savepv(OSNAME);
3621 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3624 argc--,argv++; /* skip name of script */
3625 if (PL_doswitches) {
3626 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3629 if (argv[0][1] == '-' && !argv[0][2]) {
3633 if ((s = strchr(argv[0], '='))) {
3635 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3638 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3641 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3642 GvMULTI_on(PL_argvgv);
3643 (void)gv_AVadd(PL_argvgv);
3644 av_clear(GvAVn(PL_argvgv));
3645 for (; argc > 0; argc--,argv++) {
3646 SV *sv = newSVpv(argv[0],0);
3647 av_push(GvAVn(PL_argvgv),sv);
3648 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3649 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3652 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3653 (void)sv_utf8_decode(sv);
3658 #ifdef HAS_PROCSELFEXE
3659 /* This is a function so that we don't hold on to MAXPATHLEN
3660 bytes of stack longer than necessary
3663 S_procself_val(pTHX_ SV *sv, char *arg0)
3665 char buf[MAXPATHLEN];
3666 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3668 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3669 includes a spurious NUL which will cause $^X to fail in system
3670 or backticks (this will prevent extensions from being built and
3671 many tests from working). readlink is not meant to add a NUL.
3672 Normal readlink works fine.
3674 if (len > 0 && buf[len-1] == '\0') {
3678 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3679 returning the text "unknown" from the readlink rather than the path
3680 to the executable (or returning an error from the readlink). Any valid
3681 path has a '/' in it somewhere, so use that to validate the result.
3682 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3684 if (len > 0 && memchr(buf, '/', len)) {
3685 sv_setpvn(sv,buf,len);
3691 #endif /* HAS_PROCSELFEXE */
3694 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3700 PL_toptarget = NEWSV(0,0);
3701 sv_upgrade(PL_toptarget, SVt_PVFM);
3702 sv_setpvn(PL_toptarget, "", 0);
3703 PL_bodytarget = NEWSV(0,0);
3704 sv_upgrade(PL_bodytarget, SVt_PVFM);
3705 sv_setpvn(PL_bodytarget, "", 0);
3706 PL_formtarget = PL_bodytarget;
3710 init_argv_symbols(argc,argv);
3712 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3713 #ifdef MACOS_TRADITIONAL
3714 /* $0 is not majick on a Mac */
3715 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3717 sv_setpv(GvSV(tmpgv),PL_origfilename);
3718 magicname("0", "0", 1);
3721 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3722 #ifdef HAS_PROCSELFEXE
3723 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3726 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3728 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3732 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3734 GvMULTI_on(PL_envgv);
3735 hv = GvHVn(PL_envgv);
3736 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3737 #ifdef USE_ENVIRON_ARRAY
3738 /* Note that if the supplied env parameter is actually a copy
3739 of the global environ then it may now point to free'd memory
3740 if the environment has been modified since. To avoid this
3741 problem we treat env==NULL as meaning 'use the default'
3746 # ifdef USE_ITHREADS
3747 && PL_curinterp == aTHX
3751 environ[0] = Nullch;
3754 for (; *env; env++) {
3755 if (!(s = strchr(*env,'=')))
3762 sv = newSVpv(s+1, 0);
3763 (void)hv_store(hv, *env, s - *env, sv, 0);
3767 #endif /* USE_ENVIRON_ARRAY */
3770 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3771 SvREADONLY_off(GvSV(tmpgv));
3772 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3773 SvREADONLY_on(GvSV(tmpgv));
3775 #ifdef THREADS_HAVE_PIDS
3776 PL_ppid = (IV)getppid();
3779 /* touch @F array to prevent spurious warnings 20020415 MJD */
3781 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3783 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3784 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3785 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3789 S_init_perllib(pTHX)
3794 s = PerlEnv_getenv("PERL5LIB");
3796 incpush(s, TRUE, TRUE, TRUE);
3798 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3800 /* Treat PERL5?LIB as a possible search list logical name -- the
3801 * "natural" VMS idiom for a Unix path string. We allow each
3802 * element to be a set of |-separated directories for compatibility.
3806 if (my_trnlnm("PERL5LIB",buf,0))
3807 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3809 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3813 /* Use the ~-expanded versions of APPLLIB (undocumented),
3814 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3817 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3821 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3823 #ifdef MACOS_TRADITIONAL
3826 SV * privdir = NEWSV(55, 0);
3827 char * macperl = PerlEnv_getenv("MACPERL");
3832 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3833 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3834 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3835 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3836 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3837 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3839 SvREFCNT_dec(privdir);
3842 incpush(":", FALSE, FALSE, TRUE);
3845 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3848 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3850 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3854 /* sitearch is always relative to sitelib on Windows for
3855 * DLL-based path intuition to work correctly */
3856 # if !defined(WIN32)
3857 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3863 /* this picks up sitearch as well */
3864 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3866 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3870 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3871 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3874 #ifdef PERL_VENDORARCH_EXP
3875 /* vendorarch is always relative to vendorlib on Windows for
3876 * DLL-based path intuition to work correctly */
3877 # if !defined(WIN32)
3878 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3882 #ifdef PERL_VENDORLIB_EXP
3884 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3886 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3890 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3891 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3894 #ifdef PERL_OTHERLIBDIRS
3895 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3899 incpush(".", FALSE, FALSE, TRUE);
3900 #endif /* MACOS_TRADITIONAL */
3903 #if defined(DOSISH) || defined(EPOC)
3904 # define PERLLIB_SEP ';'
3907 # define PERLLIB_SEP '|'
3909 # if defined(MACOS_TRADITIONAL)
3910 # define PERLLIB_SEP ','
3912 # define PERLLIB_SEP ':'
3916 #ifndef PERLLIB_MANGLE
3917 # define PERLLIB_MANGLE(s,n) (s)
3921 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3923 SV *subdir = Nullsv;
3928 if (addsubdirs || addoldvers) {
3929 subdir = sv_newmortal();
3932 /* Break at all separators */
3934 SV *libdir = NEWSV(55,0);
3937 /* skip any consecutive separators */
3939 while ( *p == PERLLIB_SEP ) {
3940 /* Uncomment the next line for PATH semantics */
3941 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3946 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3947 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3952 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3953 p = Nullch; /* break out */
3955 #ifdef MACOS_TRADITIONAL
3956 if (!strchr(SvPVX(libdir), ':')) {
3959 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3961 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3962 sv_catpv(libdir, ":");
3966 * BEFORE pushing libdir onto @INC we may first push version- and
3967 * archname-specific sub-directories.
3969 if (addsubdirs || addoldvers) {
3970 #ifdef PERL_INC_VERSION_LIST
3971 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3972 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3973 const char **incver;
3980 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3982 while (unix[len-1] == '/') len--; /* Cosmetic */
3983 sv_usepvn(libdir,unix,len);
3986 PerlIO_printf(Perl_error_log,
3987 "Failed to unixify @INC element \"%s\"\n",
3991 #ifdef MACOS_TRADITIONAL
3992 #define PERL_AV_SUFFIX_FMT ""
3993 #define PERL_ARCH_FMT "%s:"
3994 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3996 #define PERL_AV_SUFFIX_FMT "/"
3997 #define PERL_ARCH_FMT "/%s"
3998 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4000 /* .../version/archname if -d .../version/archname */
4001 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4003 (int)PERL_REVISION, (int)PERL_VERSION,
4004 (int)PERL_SUBVERSION, ARCHNAME);
4005 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4006 S_ISDIR(tmpstatbuf.st_mode))
4007 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4009 /* .../version if -d .../version */
4010 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4011 (int)PERL_REVISION, (int)PERL_VERSION,
4012 (int)PERL_SUBVERSION);
4013 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4014 S_ISDIR(tmpstatbuf.st_mode))
4015 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4017 /* .../archname if -d .../archname */
4018 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4019 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4020 S_ISDIR(tmpstatbuf.st_mode))
4021 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4024 #ifdef PERL_INC_VERSION_LIST
4026 for (incver = incverlist; *incver; incver++) {
4027 /* .../xxx if -d .../xxx */
4028 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4029 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4030 S_ISDIR(tmpstatbuf.st_mode))
4031 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4037 /* finally push this lib directory on the end of @INC */
4038 av_push(GvAVn(PL_incgv), libdir);
4042 #ifdef USE_5005THREADS
4043 STATIC struct perl_thread *
4044 S_init_main_thread(pTHX)
4046 #if !defined(PERL_IMPLICIT_CONTEXT)
4047 struct perl_thread *thr;
4051 Newz(53, thr, 1, struct perl_thread);
4052 PL_curcop = &PL_compiling;
4053 thr->interp = PERL_GET_INTERP;
4054 thr->cvcache = newHV();
4055 thr->threadsv = newAV();
4056 /* thr->threadsvp is set when find_threadsv is called */
4057 thr->specific = newAV();
4058 thr->flags = THRf_R_JOINABLE;
4059 MUTEX_INIT(&thr->mutex);
4060 /* Handcraft thrsv similarly to mess_sv */
4061 New(53, PL_thrsv, 1, SV);
4062 Newz(53, xpv, 1, XPV);
4063 SvFLAGS(PL_thrsv) = SVt_PV;
4064 SvANY(PL_thrsv) = (void*)xpv;
4065 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4066 SvPVX(PL_thrsv) = (char*)thr;
4067 SvCUR_set(PL_thrsv, sizeof(thr));
4068 SvLEN_set(PL_thrsv, sizeof(thr));
4069 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4070 thr->oursv = PL_thrsv;
4071 PL_chopset = " \n-";
4074 MUTEX_LOCK(&PL_threads_mutex);
4080 MUTEX_UNLOCK(&PL_threads_mutex);
4082 #ifdef HAVE_THREAD_INTERN
4083 Perl_init_thread_intern(thr);
4086 #ifdef SET_THREAD_SELF
4087 SET_THREAD_SELF(thr);
4089 thr->self = pthread_self();
4090 #endif /* SET_THREAD_SELF */
4094 * These must come after the thread self setting
4095 * because sv_setpvn does SvTAINT and the taint
4096 * fields thread selfness being set.
4098 PL_toptarget = NEWSV(0,0);
4099 sv_upgrade(PL_toptarget, SVt_PVFM);
4100 sv_setpvn(PL_toptarget, "", 0);
4101 PL_bodytarget = NEWSV(0,0);
4102 sv_upgrade(PL_bodytarget, SVt_PVFM);
4103 sv_setpvn(PL_bodytarget, "", 0);
4104 PL_formtarget = PL_bodytarget;
4105 thr->errsv = newSVpvn("", 0);
4106 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4109 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4110 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4111 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4112 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4113 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4114 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4116 PL_reginterp_cnt = 0;
4120 #endif /* USE_5005THREADS */
4123 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4126 line_t oldline = CopLINE(PL_curcop);
4132 while (AvFILL(paramList) >= 0) {
4133 cv = (CV*)av_shift(paramList);
4135 if (paramList == PL_beginav) {
4136 /* save PL_beginav for compiler */
4137 if (! PL_beginav_save)
4138 PL_beginav_save = newAV();
4139 av_push(PL_beginav_save, (SV*)cv);
4141 else if (paramList == PL_checkav) {
4142 /* save PL_checkav for compiler */
4143 if (! PL_checkav_save)
4144 PL_checkav_save = newAV();
4145 av_push(PL_checkav_save, (SV*)cv);
4150 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4151 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4157 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4161 (void)SvPV(atsv, len);
4163 PL_curcop = &PL_compiling;
4164 CopLINE_set(PL_curcop, oldline);
4165 if (paramList == PL_beginav)
4166 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4168 Perl_sv_catpvf(aTHX_ atsv,
4169 "%s failed--call queue aborted",
4170 paramList == PL_checkav ? "CHECK"
4171 : paramList == PL_initav ? "INIT"
4173 while (PL_scopestack_ix > oldscope)
4176 Perl_croak(aTHX_ "%"SVf"", atsv);
4183 /* my_exit() was called */
4184 while (PL_scopestack_ix > oldscope)
4187 PL_curstash = PL_defstash;
4188 PL_curcop = &PL_compiling;
4189 CopLINE_set(PL_curcop, oldline);
4191 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4192 if (paramList == PL_beginav)
4193 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4195 Perl_croak(aTHX_ "%s failed--call queue aborted",
4196 paramList == PL_checkav ? "CHECK"
4197 : paramList == PL_initav ? "INIT"
4204 PL_curcop = &PL_compiling;
4205 CopLINE_set(PL_curcop, oldline);
4208 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4216 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4218 S_vcall_list_body(pTHX_ va_list args)
4220 CV *cv = va_arg(args, CV*);
4221 return call_list_body(cv);
4226 S_call_list_body(pTHX_ CV *cv)
4228 PUSHMARK(PL_stack_sp);
4229 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4234 Perl_my_exit(pTHX_ U32 status)
4236 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4237 thr, (unsigned long) status));
4246 STATUS_NATIVE_SET(status);
4253 Perl_my_failure_exit(pTHX)
4256 if (vaxc$errno & 1) {
4257 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4258 STATUS_NATIVE_SET(44);
4261 if (!vaxc$errno && errno) /* unlikely */
4262 STATUS_NATIVE_SET(44);
4264 STATUS_NATIVE_SET(vaxc$errno);
4269 STATUS_POSIX_SET(errno);
4271 exitstatus = STATUS_POSIX >> 8;
4272 if (exitstatus & 255)
4273 STATUS_POSIX_SET(exitstatus);
4275 STATUS_POSIX_SET(255);
4282 S_my_exit_jump(pTHX)
4284 register PERL_CONTEXT *cx;
4289 SvREFCNT_dec(PL_e_script);
4290 PL_e_script = Nullsv;
4293 POPSTACK_TO(PL_mainstack);
4294 if (cxstack_ix >= 0) {
4297 POPBLOCK(cx,PL_curpm);
4305 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4308 p = SvPVX(PL_e_script);
4309 nl = strchr(p, '\n');
4310 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4312 filter_del(read_e_script);
4315 sv_catpvn(buf_sv, p, nl-p);
4316 sv_chop(PL_e_script, nl);