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;
185 SvREADONLY_on(&PL_sv_placeholder);
186 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
189 PL_sighandlerp = Perl_sighandler;
190 PL_pidstatus = newHV();
193 PL_rs = newSVpvn("\n", 1);
198 PL_lex_state = LEX_NOTPARSING;
204 SET_NUMERIC_STANDARD();
208 PL_patchlevel = NEWSV(0,4);
209 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
210 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
211 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
212 s = (U8*)SvPVX(PL_patchlevel);
213 /* Build version strings using "native" characters */
214 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
215 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
216 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
218 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
219 SvPOK_on(PL_patchlevel);
220 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
221 ((NV)PERL_VERSION / (NV)1000) +
222 ((NV)PERL_SUBVERSION / (NV)1000000);
223 SvNOK_on(PL_patchlevel); /* dual valued */
224 SvUTF8_on(PL_patchlevel);
225 SvREADONLY_on(PL_patchlevel);
228 #if defined(LOCAL_PATCH_COUNT)
229 PL_localpatches = local_patches; /* For possible -v */
232 #ifdef HAVE_INTERP_INTERN
236 PerlIO_init(aTHX); /* Hook to IO system */
238 PL_fdpid = newAV(); /* for remembering popen pids by fd */
239 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
240 PL_errors = newSVpvn("",0);
241 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
242 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
243 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
245 PL_regex_padav = newAV();
246 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
247 PL_regex_pad = AvARRAY(PL_regex_padav);
249 #ifdef USE_REENTRANT_API
250 Perl_reentrant_init(aTHX);
253 /* Note that strtab is a rather special HV. Assumptions are made
254 about not iterating on it, and not adding tie magic to it.
255 It is properly deallocated in perl_destruct() */
258 HvSHAREKEYS_off(PL_strtab); /* mandatory */
259 hv_ksplit(PL_strtab, 512);
261 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
262 _dyld_lookup_and_bind
263 ("__environ", (unsigned long *) &environ_pointer, NULL);
267 # ifdef USE_ENVIRON_ARRAY
268 PL_origenviron = environ;
272 /* Use sysconf(_SC_CLK_TCK) if available, if not
273 * available or if the sysconf() fails, use the HZ. */
274 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
275 PL_clocktick = sysconf(_SC_CLK_TCK);
276 if (PL_clocktick <= 0)
280 PL_stashcache = newHV();
286 =for apidoc nothreadhook
288 Stub that provides thread hook for perl_destruct when there are
295 Perl_nothreadhook(pTHX)
301 =for apidoc perl_destruct
303 Shuts down a Perl interpreter. See L<perlembed>.
311 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
313 #ifdef USE_5005THREADS
315 #endif /* USE_5005THREADS */
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
320 destruct_level = PL_perl_destruct_level;
324 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
326 if (destruct_level < i)
333 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
338 if (PL_endav && !PL_minus_c)
339 call_list(PL_scopestack_ix, PL_endav);
345 /* Need to flush since END blocks can produce output */
348 if (CALL_FPTR(PL_threadhook)(aTHX)) {
349 /* Threads hook has vetoed further cleanup */
350 return STATUS_NATIVE_EXPORT;
353 /* We must account for everything. */
355 /* Destroy the main CV and syntax tree */
357 op_free(PL_main_root);
358 PL_main_root = Nullop;
360 PL_curcop = &PL_compiling;
361 PL_main_start = Nullop;
362 SvREFCNT_dec(PL_main_cv);
366 /* Tell PerlIO we are about to tear things apart in case
367 we have layers which are using resources that should
371 PerlIO_destruct(aTHX);
373 if (PL_sv_objcount) {
375 * Try to destruct global references. We do this first so that the
376 * destructors and destructees still exist. Some sv's might remain.
377 * Non-referenced objects are on their own.
382 /* unhook hooks which will soon be, or use, destroyed data */
383 SvREFCNT_dec(PL_warnhook);
384 PL_warnhook = Nullsv;
385 SvREFCNT_dec(PL_diehook);
388 /* call exit list functions */
389 while (PL_exitlistlen-- > 0)
390 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
392 Safefree(PL_exitlist);
397 if (destruct_level == 0){
399 DEBUG_P(debprofdump());
401 #if defined(PERLIO_LAYERS)
402 /* No more IO - including error messages ! */
403 PerlIO_cleanup(aTHX);
406 /* The exit() function will do everything that needs doing. */
407 return STATUS_NATIVE_EXPORT;
410 /* jettison our possibly duplicated environment */
411 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
412 * so we certainly shouldn't free it here
415 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
416 if (environ != PL_origenviron
418 /* only main thread can free environ[0] contents */
419 && PL_curinterp == aTHX
425 for (i = 0; environ[i]; i++)
426 safesysfree(environ[i]);
428 /* Must use safesysfree() when working with environ. */
429 safesysfree(environ);
431 environ = PL_origenviron;
434 #endif /* !PERL_MICRO */
437 /* the syntax tree is shared between clones
438 * so op_free(PL_main_root) only ReREFCNT_dec's
439 * REGEXPs in the parent interpreter
440 * we need to manually ReREFCNT_dec for the clones
443 I32 i = AvFILLp(PL_regex_padav) + 1;
444 SV **ary = AvARRAY(PL_regex_padav);
448 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
450 if (SvFLAGS(resv) & SVf_BREAK) {
451 /* this is PL_reg_curpm, already freed
452 * flag is set in regexec.c:S_regtry
454 SvFLAGS(resv) &= ~SVf_BREAK;
456 else if(SvREPADTMP(resv)) {
457 SvREPADTMP_off(resv);
464 SvREFCNT_dec(PL_regex_padav);
465 PL_regex_padav = Nullav;
469 SvREFCNT_dec((SV*) PL_stashcache);
470 PL_stashcache = NULL;
472 /* loosen bonds of global variables */
475 (void)PerlIO_close(PL_rsfp);
479 /* Filters for program text */
480 SvREFCNT_dec(PL_rsfp_filters);
481 PL_rsfp_filters = Nullav;
484 PL_preprocess = FALSE;
490 PL_doswitches = FALSE;
491 PL_dowarn = G_WARN_OFF;
492 PL_doextract = FALSE;
493 PL_sawampersand = FALSE; /* must save all match strings */
496 Safefree(PL_inplace);
498 SvREFCNT_dec(PL_patchlevel);
501 SvREFCNT_dec(PL_e_script);
502 PL_e_script = Nullsv;
505 /* magical thingies */
507 SvREFCNT_dec(PL_ofs_sv); /* $, */
510 SvREFCNT_dec(PL_ors_sv); /* $\ */
513 SvREFCNT_dec(PL_rs); /* $/ */
516 PL_multiline = 0; /* $* */
517 Safefree(PL_osname); /* $^O */
520 SvREFCNT_dec(PL_statname);
521 PL_statname = Nullsv;
524 /* defgv, aka *_ should be taken care of elsewhere */
526 /* clean up after study() */
527 SvREFCNT_dec(PL_lastscream);
528 PL_lastscream = Nullsv;
529 Safefree(PL_screamfirst);
531 Safefree(PL_screamnext);
535 Safefree(PL_efloatbuf);
536 PL_efloatbuf = Nullch;
539 /* startup and shutdown function lists */
540 SvREFCNT_dec(PL_beginav);
541 SvREFCNT_dec(PL_beginav_save);
542 SvREFCNT_dec(PL_endav);
543 SvREFCNT_dec(PL_checkav);
544 SvREFCNT_dec(PL_checkav_save);
545 SvREFCNT_dec(PL_initav);
547 PL_beginav_save = Nullav;
550 PL_checkav_save = Nullav;
553 /* shortcuts just get cleared */
559 PL_argvoutgv = Nullgv;
561 PL_stderrgv = Nullgv;
562 PL_last_in_gv = Nullgv;
564 PL_debstash = Nullhv;
566 /* reset so print() ends up where we expect */
569 SvREFCNT_dec(PL_argvout_stack);
570 PL_argvout_stack = Nullav;
572 SvREFCNT_dec(PL_modglobal);
573 PL_modglobal = Nullhv;
574 SvREFCNT_dec(PL_preambleav);
575 PL_preambleav = Nullav;
576 SvREFCNT_dec(PL_subname);
578 SvREFCNT_dec(PL_linestr);
580 SvREFCNT_dec(PL_pidstatus);
581 PL_pidstatus = Nullhv;
582 SvREFCNT_dec(PL_toptarget);
583 PL_toptarget = Nullsv;
584 SvREFCNT_dec(PL_bodytarget);
585 PL_bodytarget = Nullsv;
586 PL_formtarget = Nullsv;
588 /* free locale stuff */
589 #ifdef USE_LOCALE_COLLATE
590 Safefree(PL_collation_name);
591 PL_collation_name = Nullch;
594 #ifdef USE_LOCALE_NUMERIC
595 Safefree(PL_numeric_name);
596 PL_numeric_name = Nullch;
597 SvREFCNT_dec(PL_numeric_radix_sv);
600 /* clear utf8 character classes */
601 SvREFCNT_dec(PL_utf8_alnum);
602 SvREFCNT_dec(PL_utf8_alnumc);
603 SvREFCNT_dec(PL_utf8_ascii);
604 SvREFCNT_dec(PL_utf8_alpha);
605 SvREFCNT_dec(PL_utf8_space);
606 SvREFCNT_dec(PL_utf8_cntrl);
607 SvREFCNT_dec(PL_utf8_graph);
608 SvREFCNT_dec(PL_utf8_digit);
609 SvREFCNT_dec(PL_utf8_upper);
610 SvREFCNT_dec(PL_utf8_lower);
611 SvREFCNT_dec(PL_utf8_print);
612 SvREFCNT_dec(PL_utf8_punct);
613 SvREFCNT_dec(PL_utf8_xdigit);
614 SvREFCNT_dec(PL_utf8_mark);
615 SvREFCNT_dec(PL_utf8_toupper);
616 SvREFCNT_dec(PL_utf8_totitle);
617 SvREFCNT_dec(PL_utf8_tolower);
618 SvREFCNT_dec(PL_utf8_tofold);
619 SvREFCNT_dec(PL_utf8_idstart);
620 SvREFCNT_dec(PL_utf8_idcont);
621 PL_utf8_alnum = Nullsv;
622 PL_utf8_alnumc = Nullsv;
623 PL_utf8_ascii = Nullsv;
624 PL_utf8_alpha = Nullsv;
625 PL_utf8_space = Nullsv;
626 PL_utf8_cntrl = Nullsv;
627 PL_utf8_graph = Nullsv;
628 PL_utf8_digit = Nullsv;
629 PL_utf8_upper = Nullsv;
630 PL_utf8_lower = Nullsv;
631 PL_utf8_print = Nullsv;
632 PL_utf8_punct = Nullsv;
633 PL_utf8_xdigit = Nullsv;
634 PL_utf8_mark = Nullsv;
635 PL_utf8_toupper = Nullsv;
636 PL_utf8_totitle = Nullsv;
637 PL_utf8_tolower = Nullsv;
638 PL_utf8_tofold = Nullsv;
639 PL_utf8_idstart = Nullsv;
640 PL_utf8_idcont = Nullsv;
642 if (!specialWARN(PL_compiling.cop_warnings))
643 SvREFCNT_dec(PL_compiling.cop_warnings);
644 PL_compiling.cop_warnings = Nullsv;
645 if (!specialCopIO(PL_compiling.cop_io))
646 SvREFCNT_dec(PL_compiling.cop_io);
647 PL_compiling.cop_io = Nullsv;
648 CopFILE_free(&PL_compiling);
649 CopSTASH_free(&PL_compiling);
651 /* Prepare to destruct main symbol table. */
656 SvREFCNT_dec(PL_curstname);
657 PL_curstname = Nullsv;
659 /* clear queued errors */
660 SvREFCNT_dec(PL_errors);
664 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
665 if (PL_scopestack_ix != 0)
666 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
667 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
668 (long)PL_scopestack_ix);
669 if (PL_savestack_ix != 0)
670 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
671 "Unbalanced saves: %ld more saves than restores\n",
672 (long)PL_savestack_ix);
673 if (PL_tmps_floor != -1)
674 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
675 (long)PL_tmps_floor + 1);
676 if (cxstack_ix != -1)
677 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
678 (long)cxstack_ix + 1);
681 /* Now absolutely destruct everything, somehow or other, loops or no. */
682 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
683 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
685 /* the 2 is for PL_fdpid and PL_strtab */
686 while (PL_sv_count > 2 && sv_clean_all())
689 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
690 SvFLAGS(PL_fdpid) |= SVt_PVAV;
691 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
692 SvFLAGS(PL_strtab) |= SVt_PVHV;
694 AvREAL_off(PL_fdpid); /* no surviving entries */
695 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
698 #ifdef HAVE_INTERP_INTERN
702 /* Destruct the global string table. */
704 /* Yell and reset the HeVAL() slots that are still holding refcounts,
705 * so that sv_free() won't fail on them.
713 max = HvMAX(PL_strtab);
714 array = HvARRAY(PL_strtab);
717 if (hent && ckWARN_d(WARN_INTERNAL)) {
718 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
719 "Unbalanced string table refcount: (%d) for \"%s\"",
720 HeVAL(hent) - Nullsv, HeKEY(hent));
721 HeVAL(hent) = Nullsv;
731 SvREFCNT_dec(PL_strtab);
734 /* free the pointer table used for cloning */
735 ptr_table_free(PL_ptr_table);
738 /* free special SVs */
740 SvREFCNT(&PL_sv_yes) = 0;
741 sv_clear(&PL_sv_yes);
742 SvANY(&PL_sv_yes) = NULL;
743 SvFLAGS(&PL_sv_yes) = 0;
745 SvREFCNT(&PL_sv_no) = 0;
747 SvANY(&PL_sv_no) = NULL;
748 SvFLAGS(&PL_sv_no) = 0;
752 for (i=0; i<=2; i++) {
753 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
754 sv_clear(PERL_DEBUG_PAD(i));
755 SvANY(PERL_DEBUG_PAD(i)) = NULL;
756 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
760 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
761 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
763 #ifdef DEBUG_LEAKING_SCALARS
764 if (PL_sv_count != 0) {
769 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
770 svend = &sva[SvREFCNT(sva)];
771 for (sv = sva + 1; sv < svend; ++sv) {
772 if (SvTYPE(sv) != SVTYPEMASK) {
773 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
781 #if defined(PERLIO_LAYERS)
782 /* No more IO - including error messages ! */
783 PerlIO_cleanup(aTHX);
786 /* sv_undef needs to stay immortal until after PerlIO_cleanup
787 as currently layers use it rather than Nullsv as a marker
788 for no arg - and will try and SvREFCNT_dec it.
790 SvREFCNT(&PL_sv_undef) = 0;
791 SvREADONLY_off(&PL_sv_undef);
793 SvREFCNT(&PL_sv_placeholder) = 0;
794 SvREADONLY_off(&PL_sv_placeholder);
796 Safefree(PL_origfilename);
797 Safefree(PL_reg_start_tmp);
799 Safefree(PL_reg_curpm);
800 Safefree(PL_reg_poscache);
802 Safefree(PL_op_mask);
803 Safefree(PL_psig_ptr);
804 Safefree(PL_psig_name);
805 Safefree(PL_bitcount);
806 Safefree(PL_psig_pend);
808 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
810 DEBUG_P(debprofdump());
812 #ifdef USE_REENTRANT_API
813 Perl_reentrant_free(aTHX);
818 /* As the absolutely last thing, free the non-arena SV for mess() */
821 /* it could have accumulated taint magic */
822 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
825 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
826 moremagic = mg->mg_moremagic;
827 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
829 Safefree(mg->mg_ptr);
833 /* we know that type >= SVt_PV */
834 (void)SvOOK_off(PL_mess_sv);
835 Safefree(SvPVX(PL_mess_sv));
836 Safefree(SvANY(PL_mess_sv));
837 Safefree(PL_mess_sv);
840 return STATUS_NATIVE_EXPORT;
844 =for apidoc perl_free
846 Releases a Perl interpreter. See L<perlembed>.
854 #if defined(WIN32) || defined(NETWARE)
855 # if defined(PERL_IMPLICIT_SYS)
857 void *host = nw_internal_host;
859 void *host = w32_internal_host;
863 nw_delete_internal_host(host);
865 win32_delete_internal_host(host);
876 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
878 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
879 PL_exitlist[PL_exitlistlen].fn = fn;
880 PL_exitlist[PL_exitlistlen].ptr = ptr;
885 =for apidoc perl_parse
887 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
893 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
898 #ifdef USE_5005THREADS
902 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
905 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
906 setuid perl scripts securely.\n");
910 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
911 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
912 * This MUST be done before any hash stores or fetches take place.
913 * If you set PL_hash_seed (and assumedly also PL_hash_seed_set) yourself,
914 * it is your responsibility to provide a good random seed!
915 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
916 if (!PL_hash_seed_set)
917 PL_hash_seed = get_hash_seed();
919 char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
925 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
929 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
935 /* Set PL_origalen be the sum of the contiguous argv[]
936 * elements plus the size of the env in case that it is
937 * contiguous with the argv[]. This is used in mg.c:mg_set()
938 * as the maximum modifiable length of $0. In the worst case
939 * the area we are able to modify is limited to the size of
940 * the original argv[0]. (See below for 'contiguous', though.)
945 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
946 /* Do the mask check only if the args seem like aligned. */
948 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
950 /* See if all the arguments are contiguous in memory. Note
951 * that 'contiguous' is a loose term because some platforms
952 * align the argv[] and the envp[]. If the arguments look
953 * like non-aligned, assume that they are 'strictly' or
954 * 'traditionally' contiguous. If the arguments look like
955 * aligned, we just check that they are within aligned
956 * PTRSIZE bytes. As long as no system has something bizarre
957 * like the argv[] interleaved with some other data, we are
958 * fine. (Did I just evoke Murphy's Law?) --jhi */
959 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
961 for (i = 1; i < PL_origargc; i++) {
962 if ((PL_origargv[i] == s + 1
964 || PL_origargv[i] == s + 2
969 (PL_origargv[i] > s &&
971 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
981 /* Can we grab env area too to be used as the area for $0? */
982 if (PL_origenviron) {
983 if ((PL_origenviron[0] == s + 1
985 || (PL_origenviron[0] == s + 9 && (s += 8))
990 (PL_origenviron[0] > s &&
992 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
996 s = PL_origenviron[0];
999 my_setenv("NoNe SuCh", Nullch);
1000 /* Force copy of environment. */
1001 for (i = 1; PL_origenviron[i]; i++) {
1002 if (PL_origenviron[i] == s + 1
1005 (PL_origenviron[i] > s &&
1006 PL_origenviron[i] <=
1007 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1010 s = PL_origenviron[i];
1018 PL_origalen = s - PL_origargv[0];
1023 /* Come here if running an undumped a.out. */
1025 PL_origfilename = savepv(argv[0]);
1026 PL_do_undump = FALSE;
1027 cxstack_ix = -1; /* start label stack again */
1029 init_postdump_symbols(argc,argv,env);
1034 op_free(PL_main_root);
1035 PL_main_root = Nullop;
1037 PL_main_start = Nullop;
1038 SvREFCNT_dec(PL_main_cv);
1039 PL_main_cv = Nullcv;
1042 oldscope = PL_scopestack_ix;
1043 PL_dowarn = G_WARN_OFF;
1045 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1046 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1052 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1053 parse_body(env,xsinit);
1056 call_list(oldscope, PL_checkav);
1063 /* my_exit() was called */
1064 while (PL_scopestack_ix > oldscope)
1067 PL_curstash = PL_defstash;
1069 call_list(oldscope, PL_checkav);
1070 ret = STATUS_NATIVE_EXPORT;
1073 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1081 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1083 S_vparse_body(pTHX_ va_list args)
1085 char **env = va_arg(args, char**);
1086 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1088 return parse_body(env, xsinit);
1093 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1095 int argc = PL_origargc;
1096 char **argv = PL_origargv;
1097 char *scriptname = NULL;
1099 VOL bool dosearch = FALSE;
1100 char *validarg = "";
1103 char *cddir = Nullch;
1105 sv_setpvn(PL_linestr,"",0);
1106 sv = newSVpvn("",0); /* first used for -I flags */
1110 for (argc--,argv++; argc > 0; argc--,argv++) {
1111 if (argv[0][0] != '-' || !argv[0][1])
1115 validarg = " PHOOEY ";
1123 #ifndef PERL_STRICT_CR
1148 if ((s = moreswitches(s)))
1153 CHECK_MALLOC_TOO_LATE_FOR('t');
1154 if( !PL_tainting ) {
1155 PL_taint_warn = TRUE;
1161 CHECK_MALLOC_TOO_LATE_FOR('T');
1163 PL_taint_warn = FALSE;
1168 #ifdef MACOS_TRADITIONAL
1169 /* ignore -e for Dev:Pseudo argument */
1170 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1173 if (PL_euid != PL_uid || PL_egid != PL_gid)
1174 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1176 PL_e_script = newSVpvn("",0);
1177 filter_add(read_e_script, NULL);
1180 sv_catpv(PL_e_script, s);
1182 sv_catpv(PL_e_script, argv[1]);
1186 Perl_croak(aTHX_ "No code specified for -e");
1187 sv_catpv(PL_e_script, "\n");
1190 case 'I': /* -I handled both here and in moreswitches() */
1192 if (!*++s && (s=argv[1]) != Nullch) {
1197 STRLEN len = strlen(s);
1198 p = savepvn(s, len);
1199 incpush(p, TRUE, TRUE, FALSE);
1200 sv_catpvn(sv, "-I", 2);
1201 sv_catpvn(sv, p, len);
1202 sv_catpvn(sv, " ", 1);
1206 Perl_croak(aTHX_ "No directory specified for -I");
1210 PL_preprocess = TRUE;
1220 PL_preambleav = newAV();
1221 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1223 PL_Sv = newSVpv("print myconfig();",0);
1225 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1227 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1229 sv_catpv(PL_Sv,"\" Compile-time options:");
1231 sv_catpv(PL_Sv," DEBUGGING");
1233 # ifdef MULTIPLICITY
1234 sv_catpv(PL_Sv," MULTIPLICITY");
1236 # ifdef USE_5005THREADS
1237 sv_catpv(PL_Sv," USE_5005THREADS");
1239 # ifdef USE_ITHREADS
1240 sv_catpv(PL_Sv," USE_ITHREADS");
1242 # ifdef USE_64_BIT_INT
1243 sv_catpv(PL_Sv," USE_64_BIT_INT");
1245 # ifdef USE_64_BIT_ALL
1246 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1248 # ifdef USE_LONG_DOUBLE
1249 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1251 # ifdef USE_LARGE_FILES
1252 sv_catpv(PL_Sv," USE_LARGE_FILES");
1255 sv_catpv(PL_Sv," USE_SOCKS");
1257 # ifdef PERL_IMPLICIT_CONTEXT
1258 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1260 # ifdef PERL_IMPLICIT_SYS
1261 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1263 sv_catpv(PL_Sv,"\\n\",");
1265 #if defined(LOCAL_PATCH_COUNT)
1266 if (LOCAL_PATCH_COUNT > 0) {
1268 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1269 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1270 if (PL_localpatches[i])
1271 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1275 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1278 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1280 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1283 sv_catpv(PL_Sv, "; \
1285 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1288 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1291 print \" \\%ENV:\\n @env\\n\" if @env; \
1292 print \" \\@INC:\\n @INC\\n\";");
1295 PL_Sv = newSVpv("config_vars(qw(",0);
1296 sv_catpv(PL_Sv, ++s);
1297 sv_catpv(PL_Sv, "))");
1300 av_push(PL_preambleav, PL_Sv);
1301 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1304 PL_doextract = TRUE;
1312 if (!*++s || isSPACE(*s)) {
1316 /* catch use of gnu style long options */
1317 if (strEQ(s, "version")) {
1321 if (strEQ(s, "help")) {
1328 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1332 sv_setsv(get_sv("/", TRUE), PL_rs);
1335 #ifndef SECURE_INTERNAL_GETENV
1338 (s = PerlEnv_getenv("PERL5OPT")))
1343 if (*s == '-' && *(s+1) == 'T') {
1344 CHECK_MALLOC_TOO_LATE_FOR('T');
1346 PL_taint_warn = FALSE;
1349 char *popt_copy = Nullch;
1362 if (!strchr("DIMUdmtwA", *s))
1363 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1367 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1368 s = popt_copy + (s - popt);
1369 d = popt_copy + (d - popt);
1376 if( !PL_tainting ) {
1377 PL_taint_warn = TRUE;
1387 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1388 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1392 scriptname = argv[0];
1395 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1397 else if (scriptname == Nullch) {
1399 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1407 open_script(scriptname,dosearch,sv,&fdscript);
1409 validate_suid(validarg, scriptname,fdscript);
1412 #if defined(SIGCHLD) || defined(SIGCLD)
1415 # define SIGCHLD SIGCLD
1417 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1418 if (sigstate == SIG_IGN) {
1419 if (ckWARN(WARN_SIGNAL))
1420 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1421 "Can't ignore signal CHLD, forcing to default");
1422 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1428 #ifdef MACOS_TRADITIONAL
1429 if (PL_doextract || gMacPerl_AlwaysExtract) {
1434 if (cddir && PerlDir_chdir(cddir) < 0)
1435 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1439 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1440 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1441 CvUNIQUE_on(PL_compcv);
1443 CvPADLIST(PL_compcv) = pad_new(0);
1444 #ifdef USE_5005THREADS
1445 CvOWNER(PL_compcv) = 0;
1446 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1447 MUTEX_INIT(CvMUTEXP(PL_compcv));
1448 #endif /* USE_5005THREADS */
1451 boot_core_UNIVERSAL();
1452 boot_core_xsutils();
1455 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1457 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1463 # ifdef HAS_SOCKS5_INIT
1464 socks5_init(argv[0]);
1470 init_predump_symbols();
1471 /* init_postdump_symbols not currently designed to be called */
1472 /* more than once (ENV isn't cleared first, for example) */
1473 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1475 init_postdump_symbols(argc,argv,env);
1477 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1478 * PL_utf8locale is conditionally turned on by
1479 * locale.c:Perl_init_i18nl10n() if the environment
1480 * look like the user wants to use UTF-8. */
1482 /* Requires init_predump_symbols(). */
1483 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1488 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1489 * and the default open disciplines. */
1490 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1491 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1493 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1494 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1495 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1497 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1498 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1499 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1501 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1502 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1503 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1504 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1505 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1508 sv_setpvn(sv, ":utf8\0:utf8", 11);
1510 sv_setpvn(sv, ":utf8\0", 6);
1513 sv_setpvn(sv, "\0:utf8", 6);
1519 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1520 if (strEQ(s, "unsafe"))
1521 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1522 else if (strEQ(s, "safe"))
1523 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1525 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1530 /* now parse the script */
1532 SETERRNO(0,SS_NORMAL);
1534 #ifdef MACOS_TRADITIONAL
1535 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1537 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1539 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1540 MacPerl_MPWFileName(PL_origfilename));
1544 if (yyparse() || PL_error_count) {
1546 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1548 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1553 CopLINE_set(PL_curcop, 0);
1554 PL_curstash = PL_defstash;
1555 PL_preprocess = FALSE;
1557 SvREFCNT_dec(PL_e_script);
1558 PL_e_script = Nullsv;
1565 SAVECOPFILE(PL_curcop);
1566 SAVECOPLINE(PL_curcop);
1567 gv_check(PL_defstash);
1574 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1575 dump_mstats("after compilation:");
1584 =for apidoc perl_run
1586 Tells a Perl interpreter to run. See L<perlembed>.
1597 #ifdef USE_5005THREADS
1601 oldscope = PL_scopestack_ix;
1606 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1608 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1614 cxstack_ix = -1; /* start context stack again */
1616 case 0: /* normal completion */
1617 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1622 case 2: /* my_exit() */
1623 while (PL_scopestack_ix > oldscope)
1626 PL_curstash = PL_defstash;
1627 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1628 PL_endav && !PL_minus_c)
1629 call_list(oldscope, PL_endav);
1631 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1632 dump_mstats("after execution: ");
1634 ret = STATUS_NATIVE_EXPORT;
1638 POPSTACK_TO(PL_mainstack);
1641 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1651 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1653 S_vrun_body(pTHX_ va_list args)
1655 I32 oldscope = va_arg(args, I32);
1657 return run_body(oldscope);
1663 S_run_body(pTHX_ I32 oldscope)
1665 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1666 PL_sawampersand ? "Enabling" : "Omitting"));
1668 if (!PL_restartop) {
1669 DEBUG_x(dump_all());
1670 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1671 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1675 #ifdef MACOS_TRADITIONAL
1676 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1677 (gMacPerl_ErrorFormat ? "# " : ""),
1678 MacPerl_MPWFileName(PL_origfilename));
1680 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1684 if (PERLDB_SINGLE && PL_DBsingle)
1685 sv_setiv(PL_DBsingle, 1);
1687 call_list(oldscope, PL_initav);
1693 PL_op = PL_restartop;
1697 else if (PL_main_start) {
1698 CvDEPTH(PL_main_cv) = 1;
1699 PL_op = PL_main_start;
1709 =head1 SV Manipulation Functions
1711 =for apidoc p||get_sv
1713 Returns the SV of the specified Perl scalar. If C<create> is set and the
1714 Perl variable does not exist then it will be created. If C<create> is not
1715 set and the variable does not exist then NULL is returned.
1721 Perl_get_sv(pTHX_ const char *name, I32 create)
1724 #ifdef USE_5005THREADS
1725 if (name[1] == '\0' && !isALPHA(name[0])) {
1726 PADOFFSET tmp = find_threadsv(name);
1727 if (tmp != NOT_IN_PAD)
1728 return THREADSV(tmp);
1730 #endif /* USE_5005THREADS */
1731 gv = gv_fetchpv(name, create, SVt_PV);
1738 =head1 Array Manipulation Functions
1740 =for apidoc p||get_av
1742 Returns the AV of the specified Perl array. If C<create> is set and the
1743 Perl variable does not exist then it will be created. If C<create> is not
1744 set and the variable does not exist then NULL is returned.
1750 Perl_get_av(pTHX_ const char *name, I32 create)
1752 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1761 =head1 Hash Manipulation Functions
1763 =for apidoc p||get_hv
1765 Returns the HV of the specified Perl hash. If C<create> is set and the
1766 Perl variable does not exist then it will be created. If C<create> is not
1767 set and the variable does not exist then NULL is returned.
1773 Perl_get_hv(pTHX_ const char *name, I32 create)
1775 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1784 =head1 CV Manipulation Functions
1786 =for apidoc p||get_cv
1788 Returns the CV of the specified Perl subroutine. If C<create> is set and
1789 the Perl subroutine does not exist then it will be declared (which has the
1790 same effect as saying C<sub name;>). If C<create> is not set and the
1791 subroutine does not exist then NULL is returned.
1797 Perl_get_cv(pTHX_ const char *name, I32 create)
1799 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1800 /* XXX unsafe for threads if eval_owner isn't held */
1801 /* XXX this is probably not what they think they're getting.
1802 * It has the same effect as "sub name;", i.e. just a forward
1804 if (create && !GvCVu(gv))
1805 return newSUB(start_subparse(FALSE, 0),
1806 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1814 /* Be sure to refetch the stack pointer after calling these routines. */
1818 =head1 Callback Functions
1820 =for apidoc p||call_argv
1822 Performs a callback to the specified Perl sub. See L<perlcall>.
1828 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1830 /* See G_* flags in cop.h */
1831 /* null terminated arg list */
1838 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1843 return call_pv(sub_name, flags);
1847 =for apidoc p||call_pv
1849 Performs a callback to the specified Perl sub. See L<perlcall>.
1855 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1856 /* name of the subroutine */
1857 /* See G_* flags in cop.h */
1859 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1863 =for apidoc p||call_method
1865 Performs a callback to the specified Perl method. The blessed object must
1866 be on the stack. See L<perlcall>.
1872 Perl_call_method(pTHX_ const char *methname, I32 flags)
1873 /* name of the subroutine */
1874 /* See G_* flags in cop.h */
1876 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1879 /* May be called with any of a CV, a GV, or an SV containing the name. */
1881 =for apidoc p||call_sv
1883 Performs a callback to the Perl sub whose name is in the SV. See
1890 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1891 /* See G_* flags in cop.h */
1894 LOGOP myop; /* fake syntax tree node */
1897 volatile I32 retval = 0;
1899 bool oldcatch = CATCH_GET;
1904 if (flags & G_DISCARD) {
1909 Zero(&myop, 1, LOGOP);
1910 myop.op_next = Nullop;
1911 if (!(flags & G_NOARGS))
1912 myop.op_flags |= OPf_STACKED;
1913 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1914 (flags & G_ARRAY) ? OPf_WANT_LIST :
1919 EXTEND(PL_stack_sp, 1);
1920 *++PL_stack_sp = sv;
1922 oldscope = PL_scopestack_ix;
1924 if (PERLDB_SUB && PL_curstash != PL_debstash
1925 /* Handle first BEGIN of -d. */
1926 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1927 /* Try harder, since this may have been a sighandler, thus
1928 * curstash may be meaningless. */
1929 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1930 && !(flags & G_NODEBUG))
1931 PL_op->op_private |= OPpENTERSUB_DB;
1933 if (flags & G_METHOD) {
1934 Zero(&method_op, 1, UNOP);
1935 method_op.op_next = PL_op;
1936 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1937 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1938 PL_op = (OP*)&method_op;
1941 if (!(flags & G_EVAL)) {
1943 call_body((OP*)&myop, FALSE);
1944 retval = PL_stack_sp - (PL_stack_base + oldmark);
1945 CATCH_SET(oldcatch);
1948 myop.op_other = (OP*)&myop;
1950 /* we're trying to emulate pp_entertry() here */
1952 register PERL_CONTEXT *cx;
1953 I32 gimme = GIMME_V;
1958 push_return(Nullop);
1959 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1961 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1963 PL_in_eval = EVAL_INEVAL;
1964 if (flags & G_KEEPERR)
1965 PL_in_eval |= EVAL_KEEPERR;
1971 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1973 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1980 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1982 call_body((OP*)&myop, FALSE);
1984 retval = PL_stack_sp - (PL_stack_base + oldmark);
1985 if (!(flags & G_KEEPERR))
1992 /* my_exit() was called */
1993 PL_curstash = PL_defstash;
1996 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1997 Perl_croak(aTHX_ "Callback called exit");
2002 PL_op = PL_restartop;
2006 PL_stack_sp = PL_stack_base + oldmark;
2007 if (flags & G_ARRAY)
2011 *++PL_stack_sp = &PL_sv_undef;
2016 if (PL_scopestack_ix > oldscope) {
2020 register PERL_CONTEXT *cx;
2032 if (flags & G_DISCARD) {
2033 PL_stack_sp = PL_stack_base + oldmark;
2042 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2044 S_vcall_body(pTHX_ va_list args)
2046 OP *myop = va_arg(args, OP*);
2047 int is_eval = va_arg(args, int);
2049 call_body(myop, is_eval);
2055 S_call_body(pTHX_ OP *myop, int is_eval)
2057 if (PL_op == myop) {
2059 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2061 PL_op = Perl_pp_entersub(aTHX); /* this does */
2067 /* Eval a string. The G_EVAL flag is always assumed. */
2070 =for apidoc p||eval_sv
2072 Tells Perl to C<eval> the string in the SV.
2078 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2080 /* See G_* flags in cop.h */
2083 UNOP myop; /* fake syntax tree node */
2084 volatile I32 oldmark = SP - PL_stack_base;
2085 volatile I32 retval = 0;
2091 if (flags & G_DISCARD) {
2098 Zero(PL_op, 1, UNOP);
2099 EXTEND(PL_stack_sp, 1);
2100 *++PL_stack_sp = sv;
2101 oldscope = PL_scopestack_ix;
2103 if (!(flags & G_NOARGS))
2104 myop.op_flags = OPf_STACKED;
2105 myop.op_next = Nullop;
2106 myop.op_type = OP_ENTEREVAL;
2107 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2108 (flags & G_ARRAY) ? OPf_WANT_LIST :
2110 if (flags & G_KEEPERR)
2111 myop.op_flags |= OPf_SPECIAL;
2113 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2115 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2122 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2124 call_body((OP*)&myop,TRUE);
2126 retval = PL_stack_sp - (PL_stack_base + oldmark);
2127 if (!(flags & G_KEEPERR))
2134 /* my_exit() was called */
2135 PL_curstash = PL_defstash;
2138 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2139 Perl_croak(aTHX_ "Callback called exit");
2144 PL_op = PL_restartop;
2148 PL_stack_sp = PL_stack_base + oldmark;
2149 if (flags & G_ARRAY)
2153 *++PL_stack_sp = &PL_sv_undef;
2159 if (flags & G_DISCARD) {
2160 PL_stack_sp = PL_stack_base + oldmark;
2170 =for apidoc p||eval_pv
2172 Tells Perl to C<eval> the given string and return an SV* result.
2178 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2181 SV* sv = newSVpv(p, 0);
2183 eval_sv(sv, G_SCALAR);
2190 if (croak_on_error && SvTRUE(ERRSV)) {
2192 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2198 /* Require a module. */
2201 =head1 Embedding Functions
2203 =for apidoc p||require_pv
2205 Tells Perl to C<require> the file named by the string argument. It is
2206 analogous to the Perl code C<eval "require '$file'">. It's even
2207 implemented that way; consider using load_module instead.
2212 Perl_require_pv(pTHX_ const char *pv)
2216 PUSHSTACKi(PERLSI_REQUIRE);
2218 sv = sv_newmortal();
2219 sv_setpv(sv, "require '");
2222 eval_sv(sv, G_DISCARD);
2228 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2232 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2233 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2237 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2239 /* This message really ought to be max 23 lines.
2240 * Removed -h because the user already knows that option. Others? */
2242 static char *usage_msg[] = {
2243 "-0[octal] specify record separator (\\0, if no argument)",
2244 "-a autosplit mode with -n or -p (splits $_ into @F)",
2245 "-C enable native wide character system interfaces",
2246 "-c check syntax only (runs BEGIN and CHECK blocks)",
2247 "-d[:debugger] run program under debugger",
2248 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2249 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2250 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2251 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2252 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2253 "-l[octal] enable line ending processing, specifies line terminator",
2254 "-[mM][-]module execute `use/no module...' before executing program",
2255 "-n assume 'while (<>) { ... }' loop around program",
2256 "-p assume loop like -n but print line also, like sed",
2257 "-P run program through C preprocessor before compilation",
2258 "-s enable rudimentary parsing for switches after programfile",
2259 "-S look for programfile using PATH environment variable",
2260 "-T enable tainting checks",
2261 "-t enable tainting warnings",
2262 "-u dump core after parsing program",
2263 "-U allow unsafe operations",
2264 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2265 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2266 "-w enable many useful warnings (RECOMMENDED)",
2267 "-W enable all warnings",
2268 "-X disable all warnings",
2269 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2273 char **p = usage_msg;
2275 PerlIO_printf(PerlIO_stdout(),
2276 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2279 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2282 /* convert a string of -D options (or digits) into an int.
2283 * sets *s to point to the char after the options */
2287 Perl_get_debug_opts(pTHX_ char **s)
2291 /* if adding extra options, remember to update DEBUG_MASK */
2292 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2294 for (; isALNUM(**s); (*s)++) {
2295 char *d = strchr(debopts,**s);
2297 i |= 1 << (d - debopts);
2298 else if (ckWARN_d(WARN_DEBUGGING))
2299 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2300 "invalid option -D%c\n", **s);
2305 for (; isALNUM(**s); (*s)++) ;
2308 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2309 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2310 "-Dp not implemented on this platform\n");
2316 /* This routine handles any switches that can be given during run */
2319 Perl_moreswitches(pTHX_ char *s)
2329 SvREFCNT_dec(PL_rs);
2330 if (s[1] == 'x' && s[2]) {
2334 for (s += 2, e = s; *e; e++);
2336 flags = PERL_SCAN_SILENT_ILLDIGIT;
2337 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2338 if (s + numlen < e) {
2339 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2343 PL_rs = newSVpvn("", 0);
2344 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2345 tmps = (U8*)SvPVX(PL_rs);
2346 uvchr_to_utf8(tmps, rschar);
2347 SvCUR_set(PL_rs, UNISKIP(rschar));
2352 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2353 if (rschar & ~((U8)~0))
2354 PL_rs = &PL_sv_undef;
2355 else if (!rschar && numlen >= 2)
2356 PL_rs = newSVpvn("", 0);
2358 char ch = (char)rschar;
2359 PL_rs = newSVpvn(&ch, 1);
2366 PL_unicode = parse_unicode_opts(&s);
2371 while (*s && !isSPACE(*s)) ++s;
2373 PL_splitstr = savepv(PL_splitstr);
2386 /* The following permits -d:Mod to accepts arguments following an =
2387 in the fashion that -MSome::Mod does. */
2388 if (*s == ':' || *s == '=') {
2391 sv = newSVpv("use Devel::", 0);
2393 /* We now allow -d:Module=Foo,Bar */
2394 while(isALNUM(*s) || *s==':') ++s;
2396 sv_catpv(sv, start);
2398 sv_catpvn(sv, start, s-start);
2399 sv_catpv(sv, " split(/,/,q{");
2404 my_setenv("PERL5DB", SvPV(sv, PL_na));
2407 PL_perldb = PERLDB_ALL;
2416 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
2417 #else /* !DEBUGGING */
2418 if (ckWARN_d(WARN_DEBUGGING))
2419 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2420 "Recompile perl with -DDEBUGGING to use -D switch\n");
2421 for (s++; isALNUM(*s); s++) ;
2427 usage(PL_origargv[0]);
2431 Safefree(PL_inplace);
2432 #if defined(__CYGWIN__) /* do backup extension automagically */
2433 if (*(s+1) == '\0') {
2434 PL_inplace = savepv(".bak");
2437 #endif /* __CYGWIN__ */
2438 PL_inplace = savepv(s+1);
2440 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2443 if (*s == '-') /* Additional switches on #! line. */
2447 case 'I': /* -I handled both here and in parse_body() */
2450 while (*s && isSPACE(*s))
2455 /* ignore trailing spaces (possibly followed by other switches) */
2457 for (e = p; *e && !isSPACE(*e); e++) ;
2461 } while (*p && *p != '-');
2462 e = savepvn(s, e-s);
2463 incpush(e, TRUE, TRUE, FALSE);
2470 Perl_croak(aTHX_ "No directory specified for -I");
2476 SvREFCNT_dec(PL_ors_sv);
2481 PL_ors_sv = newSVpvn("\n",1);
2482 numlen = 3 + (*s == '0');
2483 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2487 if (RsPARA(PL_rs)) {
2488 PL_ors_sv = newSVpvn("\n\n",2);
2491 PL_ors_sv = newSVsv(PL_rs);
2498 PL_preambleav = newAV();
2500 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
2504 av_push(PL_preambleav, sv);
2507 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
2510 forbid_setid("-M"); /* XXX ? */
2513 forbid_setid("-m"); /* XXX ? */
2518 /* -M-foo == 'no foo' */
2519 if (*s == '-') { use = "no "; ++s; }
2520 sv = newSVpv(use,0);
2522 /* We allow -M'Module qw(Foo Bar)' */
2523 while(isALNUM(*s) || *s==':') ++s;
2525 sv_catpv(sv, start);
2526 if (*(start-1) == 'm') {
2528 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2529 sv_catpv( sv, " ()");
2533 Perl_croak(aTHX_ "Module name required with -%c option",
2535 sv_catpvn(sv, start, s-start);
2536 sv_catpv(sv, " split(/,/,q{");
2542 PL_preambleav = newAV();
2543 av_push(PL_preambleav, sv);
2546 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2558 PL_doswitches = TRUE;
2572 #ifdef MACOS_TRADITIONAL
2573 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2575 PL_do_undump = TRUE;
2584 PerlIO_printf(PerlIO_stdout(),
2585 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2586 PL_patchlevel, ARCHNAME));
2588 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2589 PerlIO_printf(PerlIO_stdout(),
2590 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2591 PerlIO_printf(PerlIO_stdout(),
2592 Perl_form(aTHX_ " built under %s at %s %s\n",
2593 OSNAME, __DATE__, __TIME__));
2594 PerlIO_printf(PerlIO_stdout(),
2595 Perl_form(aTHX_ " OS Specific Release: %s\n",
2599 #if defined(LOCAL_PATCH_COUNT)
2600 if (LOCAL_PATCH_COUNT > 0)
2601 PerlIO_printf(PerlIO_stdout(),
2602 "\n(with %d registered patch%s, "
2603 "see perl -V for more detail)",
2604 (int)LOCAL_PATCH_COUNT,
2605 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2608 PerlIO_printf(PerlIO_stdout(),
2609 "\n\nCopyright 1987-2003, Larry Wall\n");
2610 #ifdef MACOS_TRADITIONAL
2611 PerlIO_printf(PerlIO_stdout(),
2612 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2613 "maintained by Chris Nandor\n");
2616 PerlIO_printf(PerlIO_stdout(),
2617 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2620 PerlIO_printf(PerlIO_stdout(),
2621 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2622 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2625 PerlIO_printf(PerlIO_stdout(),
2626 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2627 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2630 PerlIO_printf(PerlIO_stdout(),
2631 "atariST series port, ++jrb bammi@cadence.com\n");
2634 PerlIO_printf(PerlIO_stdout(),
2635 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2638 PerlIO_printf(PerlIO_stdout(),
2639 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
2642 PerlIO_printf(PerlIO_stdout(),
2643 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2646 PerlIO_printf(PerlIO_stdout(),
2647 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2650 PerlIO_printf(PerlIO_stdout(),
2651 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2654 PerlIO_printf(PerlIO_stdout(),
2655 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2658 PerlIO_printf(PerlIO_stdout(),
2659 "MiNT port by Guido Flohr, 1997-1999\n");
2662 PerlIO_printf(PerlIO_stdout(),
2663 "EPOC port by Olaf Flebbe, 1999-2002\n");
2666 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2667 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
2670 #ifdef BINARY_BUILD_NOTICE
2671 BINARY_BUILD_NOTICE;
2673 PerlIO_printf(PerlIO_stdout(),
2675 Perl may be copied only under the terms of either the Artistic License or the\n\
2676 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2677 Complete documentation for Perl, including FAQ lists, should be found on\n\
2678 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2679 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2682 if (! (PL_dowarn & G_WARN_ALL_MASK))
2683 PL_dowarn |= G_WARN_ON;
2687 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2688 if (!specialWARN(PL_compiling.cop_warnings))
2689 SvREFCNT_dec(PL_compiling.cop_warnings);
2690 PL_compiling.cop_warnings = pWARN_ALL ;
2694 PL_dowarn = G_WARN_ALL_OFF;
2695 if (!specialWARN(PL_compiling.cop_warnings))
2696 SvREFCNT_dec(PL_compiling.cop_warnings);
2697 PL_compiling.cop_warnings = pWARN_NONE ;
2702 if (s[1] == '-') /* Additional switches on #! line. */
2707 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2713 #ifdef ALTERNATE_SHEBANG
2714 case 'S': /* OS/2 needs -S on "extproc" line. */
2722 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2727 /* compliments of Tom Christiansen */
2729 /* unexec() can be found in the Gnu emacs distribution */
2730 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2733 Perl_my_unexec(pTHX)
2741 prog = newSVpv(BIN_EXP, 0);
2742 sv_catpv(prog, "/perl");
2743 file = newSVpv(PL_origfilename, 0);
2744 sv_catpv(file, ".perldump");
2746 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2747 /* unexec prints msg to stderr in case of failure */
2748 PerlProc_exit(status);
2751 # include <lib$routines.h>
2752 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2754 ABORT(); /* for use with undump */
2759 /* initialize curinterp */
2765 # define PERLVAR(var,type)
2766 # define PERLVARA(var,n,type)
2767 # if defined(PERL_IMPLICIT_CONTEXT)
2768 # if defined(USE_5005THREADS)
2769 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2770 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2771 # else /* !USE_5005THREADS */
2772 # define PERLVARI(var,type,init) aTHX->var = init;
2773 # define PERLVARIC(var,type,init) aTHX->var = init;
2774 # endif /* USE_5005THREADS */
2776 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2777 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2779 # include "intrpvar.h"
2780 # ifndef USE_5005THREADS
2781 # include "thrdvar.h"
2788 # define PERLVAR(var,type)
2789 # define PERLVARA(var,n,type)
2790 # define PERLVARI(var,type,init) PL_##var = init;
2791 # define PERLVARIC(var,type,init) PL_##var = init;
2792 # include "intrpvar.h"
2793 # ifndef USE_5005THREADS
2794 # include "thrdvar.h"
2805 S_init_main_stash(pTHX)
2809 PL_curstash = PL_defstash = newHV();
2810 PL_curstname = newSVpvn("main",4);
2811 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2812 SvREFCNT_dec(GvHV(gv));
2813 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2815 HvNAME(PL_defstash) = savepv("main");
2816 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2817 GvMULTI_on(PL_incgv);
2818 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2819 GvMULTI_on(PL_hintgv);
2820 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2821 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2822 GvMULTI_on(PL_errgv);
2823 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2824 GvMULTI_on(PL_replgv);
2825 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2826 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2827 sv_setpvn(ERRSV, "", 0);
2828 PL_curstash = PL_defstash;
2829 CopSTASH_set(&PL_compiling, PL_defstash);
2830 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2831 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2832 /* We must init $/ before switches are processed. */
2833 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2837 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2841 char *cpp_discard_flag;
2847 PL_origfilename = savepv("-e");
2850 /* if find_script() returns, it returns a malloc()-ed value */
2851 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2853 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2854 char *s = scriptname + 8;
2855 *fdscript = atoi(s);
2859 scriptname = savepv(s + 1);
2860 Safefree(PL_origfilename);
2861 PL_origfilename = scriptname;
2866 CopFILE_free(PL_curcop);
2867 CopFILE_set(PL_curcop, PL_origfilename);
2868 if (strEQ(PL_origfilename,"-"))
2870 if (*fdscript >= 0) {
2871 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2872 # if defined(HAS_FCNTL) && defined(F_SETFD)
2874 /* ensure close-on-exec */
2875 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2878 else if (PL_preprocess) {
2879 char *cpp_cfg = CPPSTDIN;
2880 SV *cpp = newSVpvn("",0);
2881 SV *cmd = NEWSV(0,0);
2883 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
2884 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
2885 if (strEQ(cpp_cfg, "cppstdin"))
2886 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2887 sv_catpv(cpp, cpp_cfg);
2890 sv_catpvn(sv, "-I", 2);
2891 sv_catpv(sv,PRIVLIB_EXP);
2894 DEBUG_P(PerlIO_printf(Perl_debug_log,
2895 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2896 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2898 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2905 cpp_discard_flag = "";
2907 cpp_discard_flag = "-C";
2911 perl = os2_execname(aTHX);
2913 perl = PL_origargv[0];
2917 /* This strips off Perl comments which might interfere with
2918 the C pre-processor, including #!. #line directives are
2919 deliberately stripped to avoid confusion with Perl's version
2920 of #line. FWP played some golf with it so it will fit
2921 into VMS's 255 character buffer.
2924 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2926 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2928 Perl_sv_setpvf(aTHX_ cmd, "\
2929 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2930 perl, quote, code, quote, scriptname, cpp,
2931 cpp_discard_flag, sv, CPPMINUS);
2933 PL_doextract = FALSE;
2934 # ifdef IAMSUID /* actually, this is caught earlier */
2935 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2937 (void)seteuid(PL_uid); /* musn't stay setuid root */
2939 # ifdef HAS_SETREUID
2940 (void)setreuid((Uid_t)-1, PL_uid);
2942 # ifdef HAS_SETRESUID
2943 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2945 PerlProc_setuid(PL_uid);
2949 if (PerlProc_geteuid() != PL_uid)
2950 Perl_croak(aTHX_ "Can't do seteuid!\n");
2952 # endif /* IAMSUID */
2954 DEBUG_P(PerlIO_printf(Perl_debug_log,
2955 "PL_preprocess: cmd=\"%s\"\n",
2958 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2962 else if (!*scriptname) {
2963 forbid_setid("program input from stdin");
2964 PL_rsfp = PerlIO_stdin();
2967 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2968 # if defined(HAS_FCNTL) && defined(F_SETFD)
2970 /* ensure close-on-exec */
2971 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2976 # ifndef IAMSUID /* in case script is not readable before setuid */
2978 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2979 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);
2988 Perl_croak(aTHX_ "Can't do setuid\n");
2994 Perl_croak(aTHX_ "Permission denied\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*/
3158 Perl_croak(aTHX_ "Permission denied\n");
3161 /* If we can swap euid and uid, then we can determine access rights
3162 * with a simple stat of the file, and then compare device and
3163 * inode to make sure we did stat() on the same file we opened.
3164 * Then we just have to make sure he or she can execute it.
3171 setreuid(PL_euid,PL_uid) < 0
3174 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3177 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3178 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3179 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) {
3181 Perl_croak(aTHX_ "Permission denied\n"); /* testing full pathname here */
3183 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3184 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3186 Perl_croak(aTHX_ "Permission denied\n");
3189 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3190 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3191 (void)PerlIO_close(PL_rsfp);
3193 Perl_croak(aTHX_ "Permission denied\n");
3197 setreuid(PL_uid,PL_euid) < 0
3199 # if defined(HAS_SETRESUID)
3200 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3203 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3204 Perl_croak(aTHX_ "Can't reswap uid and euid");
3205 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3206 Perl_croak(aTHX_ "Permission denied\n");
3208 #endif /* HAS_SETREUID */
3209 #endif /* IAMSUID */
3211 if (!S_ISREG(PL_statbuf.st_mode)) {
3213 Perl_croak(aTHX_ "Permission denied\n");
3215 if (PL_statbuf.st_mode & S_IWOTH)
3216 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3217 PL_doswitches = FALSE; /* -s is insecure in suid */
3218 CopLINE_inc(PL_curcop);
3219 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3220 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3221 Perl_croak(aTHX_ "No #! line");
3222 s = SvPV(PL_linestr,n_a)+2;
3224 while (!isSPACE(*s)) s++;
3225 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3226 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3227 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3228 Perl_croak(aTHX_ "Not a perl script");
3229 while (*s == ' ' || *s == '\t') s++;
3231 * #! arg must be what we saw above. They can invoke it by
3232 * mentioning suidperl explicitly, but they may not add any strange
3233 * arguments beyond what #! says if they do invoke suidperl that way.
3235 len = strlen(validarg);
3236 if (strEQ(validarg," PHOOEY ") ||
3237 strnNE(s,validarg,len) || !isSPACE(s[len]))
3238 Perl_croak(aTHX_ "Args must match #! line");
3241 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3242 PL_euid == PL_statbuf.st_uid)
3244 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3245 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3246 #endif /* IAMSUID */
3248 if (PL_euid) { /* oops, we're not the setuid root perl */
3249 (void)PerlIO_close(PL_rsfp);
3253 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3254 (int)PERL_REVISION, (int)PERL_VERSION,
3255 (int)PERL_SUBVERSION), PL_origargv);
3258 Perl_croak(aTHX_ "Can't do setuid\n");
3261 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3263 (void)setegid(PL_statbuf.st_gid);
3266 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3268 #ifdef HAS_SETRESGID
3269 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3271 PerlProc_setgid(PL_statbuf.st_gid);
3275 if (PerlProc_getegid() != PL_statbuf.st_gid)
3276 Perl_croak(aTHX_ "Can't do setegid!\n");
3278 if (PL_statbuf.st_mode & S_ISUID) {
3279 if (PL_statbuf.st_uid != PL_euid)
3281 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3284 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3286 #ifdef HAS_SETRESUID
3287 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3289 PerlProc_setuid(PL_statbuf.st_uid);
3293 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3294 Perl_croak(aTHX_ "Can't do seteuid!\n");
3296 else if (PL_uid) { /* oops, mustn't run as root */
3298 (void)seteuid((Uid_t)PL_uid);
3301 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3303 #ifdef HAS_SETRESUID
3304 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3306 PerlProc_setuid((Uid_t)PL_uid);
3310 if (PerlProc_geteuid() != PL_uid)
3311 Perl_croak(aTHX_ "Can't do seteuid!\n");
3314 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3315 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3318 else if (PL_preprocess)
3319 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3320 else if (fdscript >= 0)
3321 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3324 Perl_croak(aTHX_ "Permission denied\n");
3327 /* We absolutely must clear out any saved ids here, so we */
3328 /* exec the real perl, substituting fd script for scriptname. */
3329 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3330 PerlIO_rewind(PL_rsfp);
3331 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3332 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3333 if (!PL_origargv[which]) {
3335 Perl_croak(aTHX_ "Permission denied\n");
3337 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3338 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3339 #if defined(HAS_FCNTL) && defined(F_SETFD)
3340 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3343 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3344 (int)PERL_REVISION, (int)PERL_VERSION,
3345 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3347 Perl_croak(aTHX_ "Can't do setuid\n");
3348 #endif /* IAMSUID */
3350 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3351 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3352 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3353 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3355 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3358 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3359 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3360 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3361 /* not set-id, must be wrapped */
3367 S_find_beginning(pTHX)
3369 register char *s, *s2;
3370 #ifdef MACOS_TRADITIONAL
3374 /* skip forward in input to the real script? */
3377 #ifdef MACOS_TRADITIONAL
3378 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3380 while (PL_doextract || gMacPerl_AlwaysExtract) {
3381 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3382 if (!gMacPerl_AlwaysExtract)
3383 Perl_croak(aTHX_ "No Perl script found in input\n");
3385 if (PL_doextract) /* require explicit override ? */
3386 if (!OverrideExtract(PL_origfilename))
3387 Perl_croak(aTHX_ "User aborted script\n");
3389 PL_doextract = FALSE;
3391 /* Pater peccavi, file does not have #! */
3392 PerlIO_rewind(PL_rsfp);
3397 while (PL_doextract) {
3398 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3399 Perl_croak(aTHX_ "No Perl script found in input\n");
3402 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3403 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3404 PL_doextract = FALSE;
3405 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3407 while (*s == ' ' || *s == '\t') s++;
3409 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3410 if (strnEQ(s2-4,"perl",4))
3412 while ((s = moreswitches(s)))
3415 #ifdef MACOS_TRADITIONAL
3416 /* We are always searching for the #!perl line in MacPerl,
3417 * so if we find it, still keep the line count correct
3418 * by counting lines we already skipped over
3420 for (; maclines > 0 ; maclines--)
3421 PerlIO_ungetc(PL_rsfp, '\n');
3425 /* gMacPerl_AlwaysExtract is false in MPW tool */
3426 } else if (gMacPerl_AlwaysExtract) {
3437 PL_uid = PerlProc_getuid();
3438 PL_euid = PerlProc_geteuid();
3439 PL_gid = PerlProc_getgid();
3440 PL_egid = PerlProc_getegid();
3442 PL_uid |= PL_gid << 16;
3443 PL_euid |= PL_egid << 16;
3445 /* Should not happen: */
3446 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3447 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3450 /* This is used very early in the lifetime of the program,
3451 * before even the options are parsed, so PL_tainting has
3452 * not been initialized properly. */
3454 Perl_doing_taint(int argc, char *argv[], char *envp[])
3456 #ifndef PERL_IMPLICIT_SYS
3457 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3458 * before we have an interpreter-- and the whole point of this
3459 * function is to be called at such an early stage. If you are on
3460 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3461 * "tainted because running with altered effective ids', you'll
3462 * have to add your own checks somewhere in here. The two most
3463 * known samples of 'implicitness' are Win32 and NetWare, neither
3464 * of which has much of concept of 'uids'. */
3465 int uid = PerlProc_getuid();
3466 int euid = PerlProc_geteuid();
3467 int gid = PerlProc_getgid();
3468 int egid = PerlProc_getegid();
3474 if (uid && (euid != uid || egid != gid))
3476 #endif /* !PERL_IMPLICIT_SYS */
3477 /* This is a really primitive check; environment gets ignored only
3478 * if -T are the first chars together; otherwise one gets
3479 * "Too late" message. */
3480 if ( argc > 1 && argv[1][0] == '-'
3481 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3487 S_forbid_setid(pTHX_ char *s)
3489 if (PL_euid != PL_uid)
3490 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3491 if (PL_egid != PL_gid)
3492 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3496 Perl_init_debugger(pTHX)
3498 HV *ostash = PL_curstash;
3500 PL_curstash = PL_debstash;
3501 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
3502 AvREAL_off(PL_dbargs);
3503 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
3504 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3505 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
3506 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3507 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
3508 sv_setiv(PL_DBsingle, 0);
3509 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
3510 sv_setiv(PL_DBtrace, 0);
3511 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
3512 sv_setiv(PL_DBsignal, 0);
3513 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3514 sv_setiv(PL_DBassertion, 0);
3515 PL_curstash = ostash;
3518 #ifndef STRESS_REALLOC
3519 #define REASONABLE(size) (size)
3521 #define REASONABLE(size) (1) /* unreasonable */
3525 Perl_init_stacks(pTHX)
3527 /* start with 128-item stack and 8K cxstack */
3528 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3529 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3530 PL_curstackinfo->si_type = PERLSI_MAIN;
3531 PL_curstack = PL_curstackinfo->si_stack;
3532 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3534 PL_stack_base = AvARRAY(PL_curstack);
3535 PL_stack_sp = PL_stack_base;
3536 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3538 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3541 PL_tmps_max = REASONABLE(128);
3543 New(54,PL_markstack,REASONABLE(32),I32);
3544 PL_markstack_ptr = PL_markstack;
3545 PL_markstack_max = PL_markstack + REASONABLE(32);
3549 New(54,PL_scopestack,REASONABLE(32),I32);
3550 PL_scopestack_ix = 0;
3551 PL_scopestack_max = REASONABLE(32);
3553 New(54,PL_savestack,REASONABLE(128),ANY);
3554 PL_savestack_ix = 0;
3555 PL_savestack_max = REASONABLE(128);
3557 New(54,PL_retstack,REASONABLE(16),OP*);
3559 PL_retstack_max = REASONABLE(16);
3567 while (PL_curstackinfo->si_next)
3568 PL_curstackinfo = PL_curstackinfo->si_next;
3569 while (PL_curstackinfo) {
3570 PERL_SI *p = PL_curstackinfo->si_prev;
3571 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3572 Safefree(PL_curstackinfo->si_cxstack);
3573 Safefree(PL_curstackinfo);
3574 PL_curstackinfo = p;
3576 Safefree(PL_tmps_stack);
3577 Safefree(PL_markstack);
3578 Safefree(PL_scopestack);
3579 Safefree(PL_savestack);
3580 Safefree(PL_retstack);
3589 lex_start(PL_linestr);
3591 PL_subname = newSVpvn("main",4);
3595 S_init_predump_symbols(pTHX)
3600 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3601 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3602 GvMULTI_on(PL_stdingv);
3603 io = GvIOp(PL_stdingv);
3604 IoTYPE(io) = IoTYPE_RDONLY;
3605 IoIFP(io) = PerlIO_stdin();
3606 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3608 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3610 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3613 IoTYPE(io) = IoTYPE_WRONLY;
3614 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3616 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3618 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3620 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3621 GvMULTI_on(PL_stderrgv);
3622 io = GvIOp(PL_stderrgv);
3623 IoTYPE(io) = IoTYPE_WRONLY;
3624 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3625 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3627 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3629 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3632 Safefree(PL_osname);
3633 PL_osname = savepv(OSNAME);
3637 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3640 argc--,argv++; /* skip name of script */
3641 if (PL_doswitches) {
3642 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3645 if (argv[0][1] == '-' && !argv[0][2]) {
3649 if ((s = strchr(argv[0], '='))) {
3651 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3654 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3657 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3658 GvMULTI_on(PL_argvgv);
3659 (void)gv_AVadd(PL_argvgv);
3660 av_clear(GvAVn(PL_argvgv));
3661 for (; argc > 0; argc--,argv++) {
3662 SV *sv = newSVpv(argv[0],0);
3663 av_push(GvAVn(PL_argvgv),sv);
3664 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3665 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3668 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3669 (void)sv_utf8_decode(sv);
3674 #ifdef HAS_PROCSELFEXE
3675 /* This is a function so that we don't hold on to MAXPATHLEN
3676 bytes of stack longer than necessary
3679 S_procself_val(pTHX_ SV *sv, char *arg0)
3681 char buf[MAXPATHLEN];
3682 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3684 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3685 includes a spurious NUL which will cause $^X to fail in system
3686 or backticks (this will prevent extensions from being built and
3687 many tests from working). readlink is not meant to add a NUL.
3688 Normal readlink works fine.
3690 if (len > 0 && buf[len-1] == '\0') {
3694 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3695 returning the text "unknown" from the readlink rather than the path
3696 to the executable (or returning an error from the readlink). Any valid
3697 path has a '/' in it somewhere, so use that to validate the result.
3698 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3700 if (len > 0 && memchr(buf, '/', len)) {
3701 sv_setpvn(sv,buf,len);
3707 #endif /* HAS_PROCSELFEXE */
3710 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3716 PL_toptarget = NEWSV(0,0);
3717 sv_upgrade(PL_toptarget, SVt_PVFM);
3718 sv_setpvn(PL_toptarget, "", 0);
3719 PL_bodytarget = NEWSV(0,0);
3720 sv_upgrade(PL_bodytarget, SVt_PVFM);
3721 sv_setpvn(PL_bodytarget, "", 0);
3722 PL_formtarget = PL_bodytarget;
3726 init_argv_symbols(argc,argv);
3728 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3729 #ifdef MACOS_TRADITIONAL
3730 /* $0 is not majick on a Mac */
3731 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3733 sv_setpv(GvSV(tmpgv),PL_origfilename);
3734 magicname("0", "0", 1);
3737 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3738 #ifdef HAS_PROCSELFEXE
3739 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3742 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3744 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3748 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3750 GvMULTI_on(PL_envgv);
3751 hv = GvHVn(PL_envgv);
3752 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3754 #ifdef USE_ENVIRON_ARRAY
3755 /* Note that if the supplied env parameter is actually a copy
3756 of the global environ then it may now point to free'd memory
3757 if the environment has been modified since. To avoid this
3758 problem we treat env==NULL as meaning 'use the default'
3763 # ifdef USE_ITHREADS
3764 && PL_curinterp == aTHX
3768 environ[0] = Nullch;
3771 for (; *env; env++) {
3772 if (!(s = strchr(*env,'=')))
3774 #if defined(MSDOS) && !defined(DJGPP)
3779 sv = newSVpv(s+1, 0);
3780 (void)hv_store(hv, *env, s - *env, sv, 0);
3784 #endif /* USE_ENVIRON_ARRAY */
3785 #endif /* !PERL_MICRO */
3788 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3789 SvREADONLY_off(GvSV(tmpgv));
3790 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3791 SvREADONLY_on(GvSV(tmpgv));
3793 #ifdef THREADS_HAVE_PIDS
3794 PL_ppid = (IV)getppid();
3797 /* touch @F array to prevent spurious warnings 20020415 MJD */
3799 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3801 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3802 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3803 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3807 S_init_perllib(pTHX)
3812 s = PerlEnv_getenv("PERL5LIB");
3814 incpush(s, TRUE, TRUE, TRUE);
3816 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3818 /* Treat PERL5?LIB as a possible search list logical name -- the
3819 * "natural" VMS idiom for a Unix path string. We allow each
3820 * element to be a set of |-separated directories for compatibility.
3824 if (my_trnlnm("PERL5LIB",buf,0))
3825 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3827 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3831 /* Use the ~-expanded versions of APPLLIB (undocumented),
3832 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3835 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3839 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3841 #ifdef MACOS_TRADITIONAL
3844 SV * privdir = NEWSV(55, 0);
3845 char * macperl = PerlEnv_getenv("MACPERL");
3850 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3851 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3852 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3853 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3854 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3855 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3857 SvREFCNT_dec(privdir);
3860 incpush(":", FALSE, FALSE, TRUE);
3863 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3866 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3868 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3872 /* sitearch is always relative to sitelib on Windows for
3873 * DLL-based path intuition to work correctly */
3874 # if !defined(WIN32)
3875 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3881 /* this picks up sitearch as well */
3882 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3884 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3888 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3889 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3892 #ifdef PERL_VENDORARCH_EXP
3893 /* vendorarch is always relative to vendorlib on Windows for
3894 * DLL-based path intuition to work correctly */
3895 # if !defined(WIN32)
3896 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3900 #ifdef PERL_VENDORLIB_EXP
3902 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3904 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3908 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3909 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3912 #ifdef PERL_OTHERLIBDIRS
3913 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3917 incpush(".", FALSE, FALSE, TRUE);
3918 #endif /* MACOS_TRADITIONAL */
3921 #if defined(DOSISH) || defined(EPOC)
3922 # define PERLLIB_SEP ';'
3925 # define PERLLIB_SEP '|'
3927 # if defined(MACOS_TRADITIONAL)
3928 # define PERLLIB_SEP ','
3930 # define PERLLIB_SEP ':'
3934 #ifndef PERLLIB_MANGLE
3935 # define PERLLIB_MANGLE(s,n) (s)
3939 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3941 SV *subdir = Nullsv;
3946 if (addsubdirs || addoldvers) {
3947 subdir = sv_newmortal();
3950 /* Break at all separators */
3952 SV *libdir = NEWSV(55,0);
3955 /* skip any consecutive separators */
3957 while ( *p == PERLLIB_SEP ) {
3958 /* Uncomment the next line for PATH semantics */
3959 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3964 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3965 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3970 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3971 p = Nullch; /* break out */
3973 #ifdef MACOS_TRADITIONAL
3974 if (!strchr(SvPVX(libdir), ':')) {
3977 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3979 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3980 sv_catpv(libdir, ":");
3984 * BEFORE pushing libdir onto @INC we may first push version- and
3985 * archname-specific sub-directories.
3987 if (addsubdirs || addoldvers) {
3988 #ifdef PERL_INC_VERSION_LIST
3989 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3990 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3991 const char **incver;
3998 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
4000 while (unix[len-1] == '/') len--; /* Cosmetic */
4001 sv_usepvn(libdir,unix,len);
4004 PerlIO_printf(Perl_error_log,
4005 "Failed to unixify @INC element \"%s\"\n",
4009 #ifdef MACOS_TRADITIONAL
4010 #define PERL_AV_SUFFIX_FMT ""
4011 #define PERL_ARCH_FMT "%s:"
4012 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4014 #define PERL_AV_SUFFIX_FMT "/"
4015 #define PERL_ARCH_FMT "/%s"
4016 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4018 /* .../version/archname if -d .../version/archname */
4019 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4021 (int)PERL_REVISION, (int)PERL_VERSION,
4022 (int)PERL_SUBVERSION, ARCHNAME);
4023 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4024 S_ISDIR(tmpstatbuf.st_mode))
4025 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4027 /* .../version if -d .../version */
4028 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4029 (int)PERL_REVISION, (int)PERL_VERSION,
4030 (int)PERL_SUBVERSION);
4031 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4032 S_ISDIR(tmpstatbuf.st_mode))
4033 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4035 /* .../archname if -d .../archname */
4036 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4037 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4038 S_ISDIR(tmpstatbuf.st_mode))
4039 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4042 #ifdef PERL_INC_VERSION_LIST
4044 for (incver = incverlist; *incver; incver++) {
4045 /* .../xxx if -d .../xxx */
4046 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4047 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4048 S_ISDIR(tmpstatbuf.st_mode))
4049 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4055 /* finally push this lib directory on the end of @INC */
4056 av_push(GvAVn(PL_incgv), libdir);
4060 #ifdef USE_5005THREADS
4061 STATIC struct perl_thread *
4062 S_init_main_thread(pTHX)
4064 #if !defined(PERL_IMPLICIT_CONTEXT)
4065 struct perl_thread *thr;
4069 Newz(53, thr, 1, struct perl_thread);
4070 PL_curcop = &PL_compiling;
4071 thr->interp = PERL_GET_INTERP;
4072 thr->cvcache = newHV();
4073 thr->threadsv = newAV();
4074 /* thr->threadsvp is set when find_threadsv is called */
4075 thr->specific = newAV();
4076 thr->flags = THRf_R_JOINABLE;
4077 MUTEX_INIT(&thr->mutex);
4078 /* Handcraft thrsv similarly to mess_sv */
4079 New(53, PL_thrsv, 1, SV);
4080 Newz(53, xpv, 1, XPV);
4081 SvFLAGS(PL_thrsv) = SVt_PV;
4082 SvANY(PL_thrsv) = (void*)xpv;
4083 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4084 SvPVX(PL_thrsv) = (char*)thr;
4085 SvCUR_set(PL_thrsv, sizeof(thr));
4086 SvLEN_set(PL_thrsv, sizeof(thr));
4087 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4088 thr->oursv = PL_thrsv;
4089 PL_chopset = " \n-";
4092 MUTEX_LOCK(&PL_threads_mutex);
4098 MUTEX_UNLOCK(&PL_threads_mutex);
4100 #ifdef HAVE_THREAD_INTERN
4101 Perl_init_thread_intern(thr);
4104 #ifdef SET_THREAD_SELF
4105 SET_THREAD_SELF(thr);
4107 thr->self = pthread_self();
4108 #endif /* SET_THREAD_SELF */
4112 * These must come after the thread self setting
4113 * because sv_setpvn does SvTAINT and the taint
4114 * fields thread selfness being set.
4116 PL_toptarget = NEWSV(0,0);
4117 sv_upgrade(PL_toptarget, SVt_PVFM);
4118 sv_setpvn(PL_toptarget, "", 0);
4119 PL_bodytarget = NEWSV(0,0);
4120 sv_upgrade(PL_bodytarget, SVt_PVFM);
4121 sv_setpvn(PL_bodytarget, "", 0);
4122 PL_formtarget = PL_bodytarget;
4123 thr->errsv = newSVpvn("", 0);
4124 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4127 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4128 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4129 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4130 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4131 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4132 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4134 PL_reginterp_cnt = 0;
4138 #endif /* USE_5005THREADS */
4141 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4144 line_t oldline = CopLINE(PL_curcop);
4150 while (AvFILL(paramList) >= 0) {
4151 cv = (CV*)av_shift(paramList);
4153 if (paramList == PL_beginav) {
4154 /* save PL_beginav for compiler */
4155 if (! PL_beginav_save)
4156 PL_beginav_save = newAV();
4157 av_push(PL_beginav_save, (SV*)cv);
4159 else if (paramList == PL_checkav) {
4160 /* save PL_checkav for compiler */
4161 if (! PL_checkav_save)
4162 PL_checkav_save = newAV();
4163 av_push(PL_checkav_save, (SV*)cv);
4168 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4169 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4175 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4179 (void)SvPV(atsv, len);
4181 PL_curcop = &PL_compiling;
4182 CopLINE_set(PL_curcop, oldline);
4183 if (paramList == PL_beginav)
4184 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4186 Perl_sv_catpvf(aTHX_ atsv,
4187 "%s failed--call queue aborted",
4188 paramList == PL_checkav ? "CHECK"
4189 : paramList == PL_initav ? "INIT"
4191 while (PL_scopestack_ix > oldscope)
4194 Perl_croak(aTHX_ "%"SVf"", atsv);
4201 /* my_exit() was called */
4202 while (PL_scopestack_ix > oldscope)
4205 PL_curstash = PL_defstash;
4206 PL_curcop = &PL_compiling;
4207 CopLINE_set(PL_curcop, oldline);
4209 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4210 if (paramList == PL_beginav)
4211 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4213 Perl_croak(aTHX_ "%s failed--call queue aborted",
4214 paramList == PL_checkav ? "CHECK"
4215 : paramList == PL_initav ? "INIT"
4222 PL_curcop = &PL_compiling;
4223 CopLINE_set(PL_curcop, oldline);
4226 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4234 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4236 S_vcall_list_body(pTHX_ va_list args)
4238 CV *cv = va_arg(args, CV*);
4239 return call_list_body(cv);
4244 S_call_list_body(pTHX_ CV *cv)
4246 PUSHMARK(PL_stack_sp);
4247 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4252 Perl_my_exit(pTHX_ U32 status)
4254 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4255 thr, (unsigned long) status));
4264 STATUS_NATIVE_SET(status);
4271 Perl_my_failure_exit(pTHX)
4274 if (vaxc$errno & 1) {
4275 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4276 STATUS_NATIVE_SET(44);
4279 if (!vaxc$errno && errno) /* unlikely */
4280 STATUS_NATIVE_SET(44);
4282 STATUS_NATIVE_SET(vaxc$errno);
4287 STATUS_POSIX_SET(errno);
4289 exitstatus = STATUS_POSIX >> 8;
4290 if (exitstatus & 255)
4291 STATUS_POSIX_SET(exitstatus);
4293 STATUS_POSIX_SET(255);
4300 S_my_exit_jump(pTHX)
4302 register PERL_CONTEXT *cx;
4307 SvREFCNT_dec(PL_e_script);
4308 PL_e_script = Nullsv;
4311 POPSTACK_TO(PL_mainstack);
4312 if (cxstack_ix >= 0) {
4315 POPBLOCK(cx,PL_curpm);
4323 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4326 p = SvPVX(PL_e_script);
4327 nl = strchr(p, '\n');
4328 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4330 filter_del(read_e_script);
4333 sv_catpvn(buf_sv, p, nl-p);
4334 sv_chop(PL_e_script, nl);