4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
36 #include "charclass_invlists.h"
42 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
49 char control[CMSG_SPACE(sizeof(int))];
62 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
63 char *getenv (char *); /* Usually in <stdlib.h> */
66 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
68 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
69 # define validate_suid(rsfp) NOOP
71 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
74 #define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
80 #define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
85 S_init_tls_and_interp(PerlInterpreter *my_perl)
89 PERL_SET_INTERP(my_perl);
90 #if defined(USE_ITHREADS)
93 PERL_SET_THX(my_perl);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
226 PL_perl_destruct_level = 1;
228 PERL_UNUSED_ARG(my_perl);
229 if (PL_perl_destruct_level > 0)
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
234 #ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
240 SvREADONLY_on(&PL_sv_placeholder);
241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
244 #ifdef PERL_USES_PL_PIDSTATUS
245 PL_pidstatus = newHV();
248 PL_rs = newSVpvs("\n");
259 #if defined(LOCAL_PATCH_COUNT)
260 PL_localpatches = local_patches; /* For possible -v */
263 #ifdef HAVE_INTERP_INTERN
267 PerlIO_init(aTHX); /* Hook to IO system */
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
271 PL_errors = newSVpvs("");
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
279 PL_regex_pad = AvARRAY(PL_regex_padav);
280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
282 #ifdef USE_REENTRANT_API
283 Perl_reentrant_init(aTHX);
285 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
297 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
310 # ifdef USE_ENVIRON_ARRAY
311 PL_origenviron = environ;
315 /* Use sysconf(_SC_CLK_TCK) if available, if not
316 * available or if the sysconf() fails, use the HZ.
317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
319 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
325 PL_stashcache = newHV();
327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
328 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
331 if (!PL_mmap_page_size) {
332 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
334 SETERRNO(0, SS_NORMAL);
336 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
338 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
340 if ((long) PL_mmap_page_size < 0) {
342 SV * const error = ERRSV;
343 SvUPGRADE(error, SVt_PV);
344 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
347 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
351 # ifdef HAS_GETPAGESIZE
352 PL_mmap_page_size = getpagesize();
354 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
355 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
359 if (PL_mmap_page_size <= 0)
360 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
361 (IV) PL_mmap_page_size);
363 #endif /* HAS_MMAP */
365 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
366 PL_timesbase.tms_utime = 0;
367 PL_timesbase.tms_stime = 0;
368 PL_timesbase.tms_cutime = 0;
369 PL_timesbase.tms_cstime = 0;
372 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
374 PL_registered_mros = newHV();
375 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
376 HvMAX(PL_registered_mros) = 0;
378 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
379 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
380 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
381 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
382 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
383 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
384 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
385 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
386 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
387 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
388 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
389 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
390 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
391 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
392 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
393 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
394 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
400 =for apidoc nothreadhook
402 Stub that provides thread hook for perl_destruct when there are
409 Perl_nothreadhook(pTHX)
415 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417 Perl_dump_sv_child(pTHX_ SV *sv)
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
422 union control_un control;
425 struct cmsghdr *cmptr;
427 unsigned char buffer[256];
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431 if(sock == -1 || debug_fd == -1)
434 PerlIO_flush(Perl_debug_log);
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
440 be open, the wait would be forever.) */
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
461 perror("Debug leaking scalars parent sendmsg failed");
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
469 /* Return protocol is
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
479 got = readv(sock, vec, 2);
482 perror("Debug leaking scalars parent read failed");
483 PerlIO_flush(PerlIO_stderr());
486 if(got < sizeof(returned_errno) + 1) {
487 perror("Debug leaking scalars parent short read");
488 PerlIO_flush(PerlIO_stderr());
493 got = read(sock, buffer + 1, *buffer);
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
510 returned_errno, Strerror(returned_errno));
516 =for apidoc perl_destruct
518 Shuts down a Perl interpreter. See L<perlembed>.
527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
529 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 assert(PL_scopestack_ix == 1);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
545 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
553 i = grok_atou(s, NULL);
556 if (destruct_level < i) destruct_level = i;
558 #ifdef PERL_TRACK_MEMPOOL
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
572 if (PL_endav && !PL_minus_c) {
573 PERL_SET_PHASE(PERL_PHASE_END);
574 call_list(PL_scopestack_ix, PL_endav);
580 assert(PL_scopestack_ix == 0);
582 /* Need to flush since END blocks can produce output */
585 #ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
599 if (PL_threadhook(aTHX)) {
600 /* Threads hook has vetoed further cleanup */
601 PL_veto_cleanup = TRUE;
605 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
621 perror("Debug leaking scalars fork failed");
625 /* We are the child */
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
630 /* Our success message is an integer 0, and a char 0 */
631 static const char success[sizeof(int) + 1] = {0};
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
647 f = sysconf(_SC_OPEN_MAX);
649 where = "sysconf failed";
660 union control_un control;
663 struct cmsghdr *cmptr;
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
675 vec[0].iov_base = (void*)⌖
676 vec[0].iov_len = sizeof(target);
678 got = recvmsg(sock, &msg, 0);
683 where = "recv failed";
686 if(got < sizeof(target)) {
687 where = "short recv";
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
720 PerlIO_flush(Perl_debug_log);
722 got = write(sock, &success, sizeof(success));
725 where = "write failed";
728 if(got < sizeof(success)) {
729 where = "short write";
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
741 {(void*)where, length}
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
750 _exit((got == -1) ? errno : 0);
754 PL_dumper_fd = fd[0];
759 /* We must account for everything. */
761 /* Destroy the main CV and syntax tree */
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
766 PL_curcop = &PL_compiling;
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
773 op_free(PL_main_root);
776 PL_main_start = NULL;
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
781 SvREFCNT_dec(PL_main_cv);
783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
790 PerlIO_destruct(aTHX);
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
799 /* unhook hooks which will soon be, or use, destroyed data */
800 SvREFCNT_dec(PL_warnhook);
802 SvREFCNT_dec(PL_diehook);
805 /* call exit list functions */
806 while (PL_exitlistlen-- > 0)
807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
809 Safefree(PL_exitlist);
814 SvREFCNT_dec(PL_registered_mros);
816 /* jettison our possibly duplicated environment */
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
821 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
822 if (environ != PL_origenviron && !PL_use_safe_putenv
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
831 for (i = 0; environ[i]; i++)
832 safesysfree(environ[i]);
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
837 environ = PL_origenviron;
840 #endif /* !PERL_MICRO */
842 if (destruct_level == 0) {
844 DEBUG_P(debprofdump());
846 #if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
851 CopFILE_free(&PL_compiling);
853 /* The exit() function will do everything that needs doing. */
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
878 PL_stashcache = NULL;
880 /* loosen bonds of global variables */
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
889 Safefree(PL_splitstr);
899 PL_doswitches = FALSE;
900 PL_dowarn = G_WARN_OFF;
901 #ifdef PERL_SAWAMPERSAND
902 PL_sawampersand = 0; /* must save all match strings */
906 Safefree(PL_inplace);
908 SvREFCNT_dec(PL_patchlevel);
909 SvREFCNT_dec(PL_apiversion);
912 SvREFCNT_dec(PL_e_script);
918 /* magical thingies */
920 SvREFCNT_dec(PL_ofsgv); /* *, */
923 SvREFCNT_dec(PL_ors_sv); /* $\ */
926 SvREFCNT_dec(PL_rs); /* $/ */
929 Safefree(PL_osname); /* $^O */
932 SvREFCNT_dec(PL_statname);
936 /* defgv, aka *_ should be taken care of elsewhere */
939 Safefree(PL_efloatbuf);
943 /* startup and shutdown function lists */
944 SvREFCNT_dec(PL_beginav);
945 SvREFCNT_dec(PL_beginav_save);
946 SvREFCNT_dec(PL_endav);
947 SvREFCNT_dec(PL_checkav);
948 SvREFCNT_dec(PL_checkav_save);
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
951 SvREFCNT_dec(PL_initav);
953 PL_beginav_save = NULL;
956 PL_checkav_save = NULL;
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
961 /* shortcuts just get cleared */
967 PL_last_in_gv = NULL;
975 SvREFCNT_dec(PL_envgv);
976 SvREFCNT_dec(PL_incgv);
977 SvREFCNT_dec(PL_argvgv);
978 SvREFCNT_dec(PL_replgv);
979 SvREFCNT_dec(PL_DBgv);
980 SvREFCNT_dec(PL_DBline);
981 SvREFCNT_dec(PL_DBsub);
990 SvREFCNT_dec(PL_argvout_stack);
991 PL_argvout_stack = NULL;
993 SvREFCNT_dec(PL_modglobal);
995 SvREFCNT_dec(PL_preambleav);
996 PL_preambleav = NULL;
997 SvREFCNT_dec(PL_subname);
999 #ifdef PERL_USES_PL_PIDSTATUS
1000 SvREFCNT_dec(PL_pidstatus);
1001 PL_pidstatus = NULL;
1003 SvREFCNT_dec(PL_toptarget);
1004 PL_toptarget = NULL;
1005 SvREFCNT_dec(PL_bodytarget);
1006 PL_bodytarget = NULL;
1007 PL_formtarget = NULL;
1009 /* free locale stuff */
1010 #ifdef USE_LOCALE_COLLATE
1011 Safefree(PL_collation_name);
1012 PL_collation_name = NULL;
1015 #ifdef USE_LOCALE_NUMERIC
1016 Safefree(PL_numeric_name);
1017 PL_numeric_name = NULL;
1018 SvREFCNT_dec(PL_numeric_radix_sv);
1019 PL_numeric_radix_sv = NULL;
1022 /* clear character classes */
1023 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1024 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1025 PL_utf8_swash_ptrs[i] = NULL;
1027 SvREFCNT_dec(PL_utf8_mark);
1028 SvREFCNT_dec(PL_utf8_toupper);
1029 SvREFCNT_dec(PL_utf8_totitle);
1030 SvREFCNT_dec(PL_utf8_tolower);
1031 SvREFCNT_dec(PL_utf8_tofold);
1032 SvREFCNT_dec(PL_utf8_idstart);
1033 SvREFCNT_dec(PL_utf8_idcont);
1034 SvREFCNT_dec(PL_utf8_foldable);
1035 SvREFCNT_dec(PL_utf8_foldclosures);
1036 SvREFCNT_dec(PL_AboveLatin1);
1037 SvREFCNT_dec(PL_UpperLatin1);
1038 SvREFCNT_dec(PL_Latin1);
1039 SvREFCNT_dec(PL_NonL1NonFinalFold);
1040 SvREFCNT_dec(PL_HasMultiCharFold);
1041 PL_utf8_mark = NULL;
1042 PL_utf8_toupper = NULL;
1043 PL_utf8_totitle = NULL;
1044 PL_utf8_tolower = NULL;
1045 PL_utf8_tofold = NULL;
1046 PL_utf8_idstart = NULL;
1047 PL_utf8_idcont = NULL;
1048 PL_utf8_foldclosures = NULL;
1049 PL_AboveLatin1 = NULL;
1050 PL_HasMultiCharFold = NULL;
1052 PL_NonL1NonFinalFold = NULL;
1053 PL_UpperLatin1 = NULL;
1054 for (i = 0; i < POSIX_CC_COUNT; i++) {
1055 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1056 PL_XPosix_ptrs[i] = NULL;
1059 if (!specialWARN(PL_compiling.cop_warnings))
1060 PerlMemShared_free(PL_compiling.cop_warnings);
1061 PL_compiling.cop_warnings = NULL;
1062 cophh_free(CopHINTHASH_get(&PL_compiling));
1063 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1064 CopFILE_free(&PL_compiling);
1066 /* Prepare to destruct main symbol table. */
1069 /* break ref loop *:: <=> %:: */
1070 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1073 SvREFCNT_dec(PL_curstname);
1074 PL_curstname = NULL;
1076 /* clear queued errors */
1077 SvREFCNT_dec(PL_errors);
1080 SvREFCNT_dec(PL_isarev);
1083 if (destruct_level >= 2) {
1084 if (PL_scopestack_ix != 0)
1085 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1087 (long)PL_scopestack_ix);
1088 if (PL_savestack_ix != 0)
1089 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1090 "Unbalanced saves: %ld more saves than restores\n",
1091 (long)PL_savestack_ix);
1092 if (PL_tmps_floor != -1)
1093 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1094 (long)PL_tmps_floor + 1);
1095 if (cxstack_ix != -1)
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1097 (long)cxstack_ix + 1);
1101 SvREFCNT_dec(PL_regex_padav);
1102 PL_regex_padav = NULL;
1103 PL_regex_pad = NULL;
1106 #ifdef PERL_IMPLICIT_CONTEXT
1107 /* the entries in this list are allocated via SV PVX's, so get freed
1108 * in sv_clean_all */
1109 Safefree(PL_my_cxt_list);
1112 /* Now absolutely destruct everything, somehow or other, loops or no. */
1114 /* the 2 is for PL_fdpid and PL_strtab */
1115 while (sv_clean_all() > 2)
1119 Safefree(PL_stashpad); /* must come after sv_clean_all */
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1126 #ifdef HAVE_INTERP_INTERN
1130 /* constant strings */
1131 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1132 SvREFCNT_dec(PL_sv_consts[i]);
1133 PL_sv_consts[i] = NULL;
1136 /* Destruct the global string table. */
1138 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1139 * so that sv_free() won't fail on them.
1140 * Now that the global string table is using a single hunk of memory
1141 * for both HE and HEK, we either need to explicitly unshare it the
1142 * correct way, or actually free things here.
1145 const I32 max = HvMAX(PL_strtab);
1146 HE * const * const array = HvARRAY(PL_strtab);
1147 HE *hent = array[0];
1150 if (hent && ckWARN_d(WARN_INTERNAL)) {
1151 HE * const next = HeNEXT(hent);
1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1153 "Unbalanced string table refcount: (%ld) for \"%s\"",
1154 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1161 hent = array[riter];
1166 HvARRAY(PL_strtab) = 0;
1167 HvTOTALKEYS(PL_strtab) = 0;
1169 SvREFCNT_dec(PL_strtab);
1172 /* free the pointer tables used for cloning */
1173 ptr_table_free(PL_ptr_table);
1174 PL_ptr_table = (PTR_TBL_t*)NULL;
1177 /* free special SVs */
1179 SvREFCNT(&PL_sv_yes) = 0;
1180 sv_clear(&PL_sv_yes);
1181 SvANY(&PL_sv_yes) = NULL;
1182 SvFLAGS(&PL_sv_yes) = 0;
1184 SvREFCNT(&PL_sv_no) = 0;
1185 sv_clear(&PL_sv_no);
1186 SvANY(&PL_sv_no) = NULL;
1187 SvFLAGS(&PL_sv_no) = 0;
1191 for (i=0; i<=2; i++) {
1192 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1193 sv_clear(PERL_DEBUG_PAD(i));
1194 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1195 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1199 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1200 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1202 #ifdef DEBUG_LEAKING_SCALARS
1203 if (PL_sv_count != 0) {
1208 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1209 svend = &sva[SvREFCNT(sva)];
1210 for (sv = sva + 1; sv < svend; ++sv) {
1211 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1212 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1214 " refcnt=%"UVuf pTHX__FORMAT "\n"
1215 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1217 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1219 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1221 sv->sv_debug_inpad ? "for" : "by",
1222 sv->sv_debug_optype ?
1223 PL_op_name[sv->sv_debug_optype]: "(none)",
1224 PTR2UV(sv->sv_debug_parent),
1227 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1228 Perl_dump_sv_child(aTHX_ sv);
1234 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1238 /* Wait for up to 4 seconds for child to terminate.
1239 This seems to be the least effort way of timing out on reaping
1241 struct timeval waitfor = {4, 0};
1242 int sock = PL_dumper_fd;
1246 FD_SET(sock, &rset);
1247 select(sock + 1, &rset, NULL, NULL, &waitfor);
1248 waitpid(child, &status, WNOHANG);
1253 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1259 #if defined(PERLIO_LAYERS)
1260 /* No more IO - including error messages ! */
1261 PerlIO_cleanup(aTHX);
1264 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1265 as currently layers use it rather than NULL as a marker
1266 for no arg - and will try and SvREFCNT_dec it.
1268 SvREFCNT(&PL_sv_undef) = 0;
1269 SvREADONLY_off(&PL_sv_undef);
1271 Safefree(PL_origfilename);
1272 PL_origfilename = NULL;
1273 Safefree(PL_reg_curpm);
1274 free_tied_hv_pool();
1275 Safefree(PL_op_mask);
1276 Safefree(PL_psig_name);
1277 PL_psig_name = (SV**)NULL;
1278 PL_psig_ptr = (SV**)NULL;
1280 /* We need to NULL PL_psig_pend first, so that
1281 signal handlers know not to use it */
1282 int *psig_save = PL_psig_pend;
1283 PL_psig_pend = (int*)NULL;
1284 Safefree(psig_save);
1287 TAINTING_set(FALSE);
1288 TAINT_WARN_set(FALSE);
1289 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1292 DEBUG_P(debprofdump());
1294 #ifdef USE_REENTRANT_API
1295 Perl_reentrant_free(aTHX);
1300 while (PL_regmatch_slab) {
1301 regmatch_slab *s = PL_regmatch_slab;
1302 PL_regmatch_slab = PL_regmatch_slab->next;
1306 /* As the absolutely last thing, free the non-arena SV for mess() */
1309 /* we know that type == SVt_PVMG */
1311 /* it could have accumulated taint magic */
1314 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1315 moremagic = mg->mg_moremagic;
1316 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1318 Safefree(mg->mg_ptr);
1322 /* we know that type >= SVt_PV */
1323 SvPV_free(PL_mess_sv);
1324 Safefree(SvANY(PL_mess_sv));
1325 Safefree(PL_mess_sv);
1332 =for apidoc perl_free
1334 Releases a Perl interpreter. See L<perlembed>.
1344 PERL_ARGS_ASSERT_PERL_FREE;
1346 if (PL_veto_cleanup)
1349 #ifdef PERL_TRACK_MEMPOOL
1352 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1353 * value as we're probably hunting memory leaks then
1355 if (PL_perl_destruct_level == 0) {
1356 const U32 old_debug = PL_debug;
1357 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1358 thread at thread exit. */
1360 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1361 "free this thread's memory\n");
1362 PL_debug &= ~ DEBUG_m_FLAG;
1364 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1365 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
1366 PL_debug = old_debug;
1371 #if defined(WIN32) || defined(NETWARE)
1372 # if defined(PERL_IMPLICIT_SYS)
1375 void *host = nw_internal_host;
1376 PerlMem_free(aTHXx);
1377 nw_delete_internal_host(host);
1379 void *host = w32_internal_host;
1380 PerlMem_free(aTHXx);
1381 win32_delete_internal_host(host);
1385 PerlMem_free(aTHXx);
1388 PerlMem_free(aTHXx);
1392 #if defined(USE_ITHREADS)
1393 /* provide destructors to clean up the thread key when libperl is unloaded */
1394 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1396 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1397 #pragma fini "perl_fini"
1398 #elif defined(__sun) && !defined(__GNUC__)
1399 #pragma fini (perl_fini)
1403 #if defined(__GNUC__)
1404 __attribute__((destructor))
1410 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1413 PL_curinterp && !PL_veto_cleanup)
1418 #endif /* THREADS */
1421 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1423 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1424 PL_exitlist[PL_exitlistlen].fn = fn;
1425 PL_exitlist[PL_exitlistlen].ptr = ptr;
1430 =for apidoc perl_parse
1432 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1437 #define SET_CURSTASH(newstash) \
1438 if (PL_curstash != newstash) { \
1439 SvREFCNT_dec(PL_curstash); \
1440 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1444 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1451 PERL_ARGS_ASSERT_PERL_PARSE;
1452 #ifndef MULTIPLICITY
1453 PERL_UNUSED_ARG(my_perl);
1455 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1457 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1459 if (s && (grok_atou(s, NULL) == 1)) {
1460 unsigned char *seed= PERL_HASH_SEED;
1461 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1462 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1463 while (seed < seed_end) {
1464 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1466 #ifdef PERL_HASH_RANDOMIZE_KEYS
1467 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1468 PL_HASH_RAND_BITS_ENABLED,
1469 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1471 PerlIO_printf(Perl_debug_log, "\n");
1474 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1478 if (PL_origalen != 0) {
1479 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1482 /* Set PL_origalen be the sum of the contiguous argv[]
1483 * elements plus the size of the env in case that it is
1484 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1485 * as the maximum modifiable length of $0. In the worst case
1486 * the area we are able to modify is limited to the size of
1487 * the original argv[0]. (See below for 'contiguous', though.)
1489 const char *s = NULL;
1491 const UV mask = ~(UV)(PTRSIZE-1);
1492 /* Do the mask check only if the args seem like aligned. */
1494 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1496 /* See if all the arguments are contiguous in memory. Note
1497 * that 'contiguous' is a loose term because some platforms
1498 * align the argv[] and the envp[]. If the arguments look
1499 * like non-aligned, assume that they are 'strictly' or
1500 * 'traditionally' contiguous. If the arguments look like
1501 * aligned, we just check that they are within aligned
1502 * PTRSIZE bytes. As long as no system has something bizarre
1503 * like the argv[] interleaved with some other data, we are
1504 * fine. (Did I just evoke Murphy's Law?) --jhi */
1505 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1507 for (i = 1; i < PL_origargc; i++) {
1508 if ((PL_origargv[i] == s + 1
1510 || PL_origargv[i] == s + 2
1515 (PL_origargv[i] > s &&
1517 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1528 #ifndef PERL_USE_SAFE_PUTENV
1529 /* Can we grab env area too to be used as the area for $0? */
1530 if (s && PL_origenviron && !PL_use_safe_putenv) {
1531 if ((PL_origenviron[0] == s + 1)
1534 (PL_origenviron[0] > s &&
1535 PL_origenviron[0] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1540 s = PL_origenviron[0];
1543 my_setenv("NoNe SuCh", NULL);
1544 /* Force copy of environment. */
1545 for (i = 1; PL_origenviron[i]; i++) {
1546 if (PL_origenviron[i] == s + 1
1549 (PL_origenviron[i] > s &&
1550 PL_origenviron[i] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 s = PL_origenviron[i];
1562 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1564 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1569 /* Come here if running an undumped a.out. */
1571 PL_origfilename = savepv(argv[0]);
1572 PL_do_undump = FALSE;
1573 cxstack_ix = -1; /* start label stack again */
1575 assert (!TAINT_get);
1579 init_postdump_symbols(argc,argv,env);
1584 op_free(PL_main_root);
1585 PL_main_root = NULL;
1587 PL_main_start = NULL;
1588 SvREFCNT_dec(PL_main_cv);
1592 oldscope = PL_scopestack_ix;
1593 PL_dowarn = G_WARN_OFF;
1598 parse_body(env,xsinit);
1599 if (PL_unitcheckav) {
1600 call_list(oldscope, PL_unitcheckav);
1603 PERL_SET_PHASE(PERL_PHASE_CHECK);
1604 call_list(oldscope, PL_checkav);
1612 /* my_exit() was called */
1613 while (PL_scopestack_ix > oldscope)
1616 SET_CURSTASH(PL_defstash);
1617 if (PL_unitcheckav) {
1618 call_list(oldscope, PL_unitcheckav);
1621 PERL_SET_PHASE(PERL_PHASE_CHECK);
1622 call_list(oldscope, PL_checkav);
1627 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1635 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1636 miniperl, and we need to see those flags reflected in the values here. */
1638 /* What this returns is subject to change. Use the public interface in Config.
1641 S_Internals_V(pTHX_ CV *cv)
1644 #ifdef LOCAL_PATCH_COUNT
1645 const int local_patch_count = LOCAL_PATCH_COUNT;
1647 const int local_patch_count = 0;
1649 const int entries = 3 + local_patch_count;
1651 static const char non_bincompat_options[] =
1658 # ifdef NO_HASH_SEED
1661 # ifdef NO_TAINT_SUPPORT
1664 # ifdef PERL_BOOL_AS_CHAR
1665 " PERL_BOOL_AS_CHAR"
1667 # ifdef PERL_DISABLE_PMC
1670 # ifdef PERL_DONT_CREATE_GVSV
1671 " PERL_DONT_CREATE_GVSV"
1673 # ifdef PERL_EXTERNAL_GLOB
1674 " PERL_EXTERNAL_GLOB"
1676 # ifdef PERL_HASH_FUNC_SIPHASH
1677 " PERL_HASH_FUNC_SIPHASH"
1679 # ifdef PERL_HASH_FUNC_SDBM
1680 " PERL_HASH_FUNC_SDBM"
1682 # ifdef PERL_HASH_FUNC_DJB2
1683 " PERL_HASH_FUNC_DJB2"
1685 # ifdef PERL_HASH_FUNC_SUPERFAST
1686 " PERL_HASH_FUNC_SUPERFAST"
1688 # ifdef PERL_HASH_FUNC_MURMUR3
1689 " PERL_HASH_FUNC_MURMUR3"
1691 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1692 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1694 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1695 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1697 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1698 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1700 # ifdef PERL_IS_MINIPERL
1703 # ifdef PERL_MALLOC_WRAP
1706 # ifdef PERL_MEM_LOG
1709 # ifdef PERL_MEM_LOG_NOIMPL
1710 " PERL_MEM_LOG_NOIMPL"
1712 # ifdef PERL_NEW_COPY_ON_WRITE
1713 " PERL_NEW_COPY_ON_WRITE"
1715 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1716 " PERL_PERTURB_KEYS_DETERMINISTIC"
1718 # ifdef PERL_PERTURB_KEYS_DISABLED
1719 " PERL_PERTURB_KEYS_DISABLED"
1721 # ifdef PERL_PERTURB_KEYS_RANDOM
1722 " PERL_PERTURB_KEYS_RANDOM"
1724 # ifdef PERL_PRESERVE_IVUV
1725 " PERL_PRESERVE_IVUV"
1727 # ifdef PERL_RELOCATABLE_INCPUSH
1728 " PERL_RELOCATABLE_INCPUSH"
1730 # ifdef PERL_USE_DEVEL
1733 # ifdef PERL_USE_SAFE_PUTENV
1734 " PERL_USE_SAFE_PUTENV"
1736 # ifdef UNLINK_ALL_VERSIONS
1737 " UNLINK_ALL_VERSIONS"
1739 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1740 " USE_ATTRIBUTES_FOR_PERLIO"
1742 # ifdef USE_FAST_STDIO
1745 # ifdef USE_HASH_SEED_EXPLICIT
1746 " USE_HASH_SEED_EXPLICIT"
1751 # ifdef USE_LOCALE_CTYPE
1754 # ifdef USE_PERL_ATOF
1757 # ifdef USE_SITECUSTOMIZE
1758 " USE_SITECUSTOMIZE"
1761 PERL_UNUSED_ARG(cv);
1762 PERL_UNUSED_ARG(items);
1764 EXTEND(SP, entries);
1766 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1767 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1768 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1772 PUSHs(Perl_newSVpvn_flags(aTHX_
1773 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1776 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1780 PUSHs(&PL_sv_undef);
1783 for (i = 1; i <= local_patch_count; i++) {
1784 /* This will be an undef, if PL_localpatches[i] is NULL. */
1785 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1791 #define INCPUSH_UNSHIFT 0x01
1792 #define INCPUSH_ADD_OLD_VERS 0x02
1793 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1794 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1795 #define INCPUSH_NOT_BASEDIR 0x10
1796 #define INCPUSH_CAN_RELOCATE 0x20
1797 #define INCPUSH_ADD_SUB_DIRS \
1798 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1801 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1805 int argc = PL_origargc;
1806 char **argv = PL_origargv;
1807 const char *scriptname = NULL;
1808 VOL bool dosearch = FALSE;
1810 bool doextract = FALSE;
1811 const char *cddir = NULL;
1812 #ifdef USE_SITECUSTOMIZE
1813 bool minus_f = FALSE;
1815 SV *linestr_sv = NULL;
1816 bool add_read_e_script = FALSE;
1817 U32 lex_start_flags = 0;
1819 PERL_SET_PHASE(PERL_PHASE_START);
1825 for (argc--,argv++; argc > 0; argc--,argv++) {
1826 if (argv[0][0] != '-' || !argv[0][1])
1832 #ifndef PERL_STRICT_CR
1856 if ((s = moreswitches(s)))
1861 #if defined(SILENT_NO_TAINT_SUPPORT)
1862 /* silently ignore */
1863 #elif defined(NO_TAINT_SUPPORT)
1864 Perl_croak_nocontext("This perl was compiled without taint support. "
1865 "Cowardly refusing to run with -t or -T flags");
1867 CHECK_MALLOC_TOO_LATE_FOR('t');
1868 if( !TAINTING_get ) {
1869 TAINT_WARN_set(TRUE);
1876 #if defined(SILENT_NO_TAINT_SUPPORT)
1877 /* silently ignore */
1878 #elif defined(NO_TAINT_SUPPORT)
1879 Perl_croak_nocontext("This perl was compiled without taint support. "
1880 "Cowardly refusing to run with -t or -T flags");
1882 CHECK_MALLOC_TOO_LATE_FOR('T');
1884 TAINT_WARN_set(FALSE);
1893 forbid_setid('e', FALSE);
1895 PL_e_script = newSVpvs("");
1896 add_read_e_script = TRUE;
1899 sv_catpv(PL_e_script, s);
1901 sv_catpv(PL_e_script, argv[1]);
1905 Perl_croak(aTHX_ "No code specified for -%c", c);
1906 sv_catpvs(PL_e_script, "\n");
1910 #ifdef USE_SITECUSTOMIZE
1916 case 'I': /* -I handled both here and in moreswitches() */
1917 forbid_setid('I', FALSE);
1918 if (!*++s && (s=argv[1]) != NULL) {
1922 STRLEN len = strlen(s);
1923 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1926 Perl_croak(aTHX_ "No directory specified for -I");
1929 forbid_setid('S', FALSE);
1938 opts_prog = newSVpvs("use Config; Config::_V()");
1942 opts_prog = Perl_newSVpvf(aTHX_
1943 "use Config; Config::config_vars(qw%c%s%c)",
1947 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1948 /* don't look for script or read stdin */
1949 scriptname = BIT_BUCKET;
1961 if (!*++s || isSPACE(*s)) {
1965 /* catch use of gnu style long options.
1966 Both of these exit immediately. */
1967 if (strEQ(s, "version"))
1969 if (strEQ(s, "help"))
1974 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1985 #ifndef SECURE_INTERNAL_GETENV
1988 (s = PerlEnv_getenv("PERL5OPT")))
1992 if (*s == '-' && *(s+1) == 'T') {
1993 #if defined(SILENT_NO_TAINT_SUPPORT)
1994 /* silently ignore */
1995 #elif defined(NO_TAINT_SUPPORT)
1996 Perl_croak_nocontext("This perl was compiled without taint support. "
1997 "Cowardly refusing to run with -t or -T flags");
1999 CHECK_MALLOC_TOO_LATE_FOR('T');
2001 TAINT_WARN_set(FALSE);
2005 char *popt_copy = NULL;
2018 if (!strchr("CDIMUdmtwW", *s))
2019 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2023 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2024 s = popt_copy + (s - d);
2032 #if defined(SILENT_NO_TAINT_SUPPORT)
2033 /* silently ignore */
2034 #elif defined(NO_TAINT_SUPPORT)
2035 Perl_croak_nocontext("This perl was compiled without taint support. "
2036 "Cowardly refusing to run with -t or -T flags");
2038 if( !TAINTING_get) {
2039 TAINT_WARN_set(TRUE);
2051 /* Set $^X early so that it can be used for relocatable paths in @INC */
2052 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2053 assert (!TAINT_get);
2058 #if defined(USE_SITECUSTOMIZE)
2060 /* The games with local $! are to avoid setting errno if there is no
2061 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2062 ie a q() operator with a NUL byte as a the delimiter. This avoids
2063 problems with pathnames containing (say) ' */
2064 # ifdef PERL_IS_MINIPERL
2065 AV *const inc = GvAV(PL_incgv);
2066 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2069 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2070 it should be reported immediately as a build failure. */
2071 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2073 "BEGIN { my $f = q%c./%"SVf"/buildcustomize.pl%c; "
2074 "do {local $!; -f $f }"
2075 " and do $f || die $@ || qq '$f: $!' }",
2076 0, SVfARG(*inc0), 0));
2079 /* SITELIB_EXP is a function call on Win32. */
2080 const char *const raw_sitelib = SITELIB_EXP;
2082 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2083 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2084 INCPUSH_CAN_RELOCATE);
2085 const char *const sitelib = SvPVX(sitelib_sv);
2086 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2088 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2089 0, SVfARG(sitelib), 0,
2090 0, SVfARG(sitelib), 0));
2091 assert (SvREFCNT(sitelib_sv) == 1);
2092 SvREFCNT_dec(sitelib_sv);
2099 scriptname = argv[0];
2102 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2104 else if (scriptname == NULL) {
2106 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2112 assert (!TAINT_get);
2116 bool suidscript = FALSE;
2118 rsfp = open_script(scriptname, dosearch, &suidscript);
2120 rsfp = PerlIO_stdin();
2121 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2124 validate_suid(rsfp);
2127 # if defined(SIGCHLD) || defined(SIGCLD)
2130 # define SIGCHLD SIGCLD
2132 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2133 if (sigstate == (Sighandler_t) SIG_IGN) {
2134 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2135 "Can't ignore signal CHLD, forcing to default");
2136 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2144 /* This will croak if suidscript is true, as -x cannot be used with
2146 forbid_setid('x', suidscript);
2147 /* Hence you can't get here if suidscript is true */
2149 linestr_sv = newSV_type(SVt_PV);
2150 lex_start_flags |= LEX_START_COPIED;
2151 find_beginning(linestr_sv, rsfp);
2152 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2153 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2157 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2158 CvUNIQUE_on(PL_compcv);
2160 CvPADLIST(PL_compcv) = pad_new(0);
2162 PL_isarev = newHV();
2165 boot_core_UNIVERSAL();
2167 newXS("Internals::V", S_Internals_V, __FILE__);
2170 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2172 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2178 # ifdef HAS_SOCKS5_INIT
2179 socks5_init(argv[0]);
2185 init_predump_symbols();
2186 /* init_postdump_symbols not currently designed to be called */
2187 /* more than once (ENV isn't cleared first, for example) */
2188 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2190 init_postdump_symbols(argc,argv,env);
2192 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2193 * or explicitly in some platforms.
2194 * locale.c:Perl_init_i18nl10n() if the environment
2195 * look like the user wants to use UTF-8. */
2196 #if defined(__SYMBIAN32__)
2197 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2199 # ifndef PERL_IS_MINIPERL
2201 /* Requires init_predump_symbols(). */
2202 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2207 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2208 * and the default open disciplines. */
2209 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2210 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2212 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2213 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2214 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2216 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2217 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2218 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2220 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2221 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2222 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2224 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2225 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2228 sv_setpvs(sv, ":utf8\0:utf8");
2230 sv_setpvs(sv, ":utf8\0");
2233 sv_setpvs(sv, "\0:utf8");
2242 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2243 if (strEQ(s, "unsafe"))
2244 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2245 else if (strEQ(s, "safe"))
2246 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2248 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2253 lex_start(linestr_sv, rsfp, lex_start_flags);
2254 SvREFCNT_dec(linestr_sv);
2256 PL_subname = newSVpvs("main");
2258 if (add_read_e_script)
2259 filter_add(read_e_script, NULL);
2261 /* now parse the script */
2263 SETERRNO(0,SS_NORMAL);
2264 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2266 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2268 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2272 CopLINE_set(PL_curcop, 0);
2273 SET_CURSTASH(PL_defstash);
2275 SvREFCNT_dec(PL_e_script);
2283 SAVECOPFILE(PL_curcop);
2284 SAVECOPLINE(PL_curcop);
2285 gv_check(PL_defstash);
2294 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2295 dump_mstats("after compilation:");
2300 PL_restartjmpenv = NULL;
2306 =for apidoc perl_run
2308 Tells a Perl interpreter to run. See L<perlembed>.
2320 PERL_ARGS_ASSERT_PERL_RUN;
2321 #ifndef MULTIPLICITY
2322 PERL_UNUSED_ARG(my_perl);
2325 oldscope = PL_scopestack_ix;
2333 cxstack_ix = -1; /* start context stack again */
2335 case 0: /* normal completion */
2339 case 2: /* my_exit() */
2340 while (PL_scopestack_ix > oldscope)
2343 SET_CURSTASH(PL_defstash);
2344 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2345 PL_endav && !PL_minus_c) {
2346 PERL_SET_PHASE(PERL_PHASE_END);
2347 call_list(oldscope, PL_endav);
2350 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2351 dump_mstats("after execution: ");
2357 POPSTACK_TO(PL_mainstack);
2360 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2371 S_run_body(pTHX_ I32 oldscope)
2373 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2374 PL_sawampersand ? "Enabling" : "Omitting",
2375 (unsigned int)(PL_sawampersand)));
2377 if (!PL_restartop) {
2379 if (DEBUG_x_TEST || DEBUG_B_TEST)
2380 dump_all_perl(!DEBUG_B_TEST);
2382 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2386 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2389 if (PERLDB_SINGLE && PL_DBsingle)
2390 sv_setiv(PL_DBsingle, 1);
2392 PERL_SET_PHASE(PERL_PHASE_INIT);
2393 call_list(oldscope, PL_initav);
2395 #ifdef PERL_DEBUG_READONLY_OPS
2396 if (PL_main_root && PL_main_root->op_slabbed)
2397 Slab_to_ro(OpSLAB(PL_main_root));
2403 PERL_SET_PHASE(PERL_PHASE_RUN);
2406 PL_restartjmpenv = NULL;
2407 PL_op = PL_restartop;
2411 else if (PL_main_start) {
2412 CvDEPTH(PL_main_cv) = 1;
2413 PL_op = PL_main_start;
2417 assert(0); /* NOTREACHED */
2421 =head1 SV Manipulation Functions
2423 =for apidoc p||get_sv
2425 Returns the SV of the specified Perl scalar. C<flags> are passed to
2426 C<gv_fetchpv>. If C<GV_ADD> is set and the
2427 Perl variable does not exist then it will be created. If C<flags> is zero
2428 and the variable does not exist then NULL is returned.
2434 Perl_get_sv(pTHX_ const char *name, I32 flags)
2438 PERL_ARGS_ASSERT_GET_SV;
2440 gv = gv_fetchpv(name, flags, SVt_PV);
2447 =head1 Array Manipulation Functions
2449 =for apidoc p||get_av
2451 Returns the AV of the specified Perl global or package array with the given
2452 name (so it won't work on lexical variables). C<flags> are passed
2453 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2454 Perl variable does not exist then it will be created. If C<flags> is zero
2455 and the variable does not exist then NULL is returned.
2457 Perl equivalent: C<@{"$name"}>.
2463 Perl_get_av(pTHX_ const char *name, I32 flags)
2465 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2467 PERL_ARGS_ASSERT_GET_AV;
2477 =head1 Hash Manipulation Functions
2479 =for apidoc p||get_hv
2481 Returns the HV of the specified Perl hash. C<flags> are passed to
2482 C<gv_fetchpv>. If C<GV_ADD> is set and the
2483 Perl variable does not exist then it will be created. If C<flags> is zero
2484 and the variable does not exist then NULL is returned.
2490 Perl_get_hv(pTHX_ const char *name, I32 flags)
2492 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2494 PERL_ARGS_ASSERT_GET_HV;
2504 =head1 CV Manipulation Functions
2506 =for apidoc p||get_cvn_flags
2508 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2509 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2510 exist then it will be declared (which has the same effect as saying
2511 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2512 then NULL is returned.
2514 =for apidoc p||get_cv
2516 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2522 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2524 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2526 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2528 /* XXX this is probably not what they think they're getting.
2529 * It has the same effect as "sub name;", i.e. just a forward
2531 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2532 return newSTUB(gv,0);
2539 /* Nothing in core calls this now, but we can't replace it with a macro and
2540 move it to mathoms.c as a macro would evaluate name twice. */
2542 Perl_get_cv(pTHX_ const char *name, I32 flags)
2544 PERL_ARGS_ASSERT_GET_CV;
2546 return get_cvn_flags(name, strlen(name), flags);
2549 /* Be sure to refetch the stack pointer after calling these routines. */
2553 =head1 Callback Functions
2555 =for apidoc p||call_argv
2557 Performs a callback to the specified named and package-scoped Perl subroutine
2558 with C<argv> (a NULL-terminated array of strings) as arguments. See
2561 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2567 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2569 /* See G_* flags in cop.h */
2570 /* null terminated arg list */
2574 PERL_ARGS_ASSERT_CALL_ARGV;
2579 mXPUSHs(newSVpv(*argv,0));
2584 return call_pv(sub_name, flags);
2588 =for apidoc p||call_pv
2590 Performs a callback to the specified Perl sub. See L<perlcall>.
2596 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2597 /* name of the subroutine */
2598 /* See G_* flags in cop.h */
2600 PERL_ARGS_ASSERT_CALL_PV;
2602 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2606 =for apidoc p||call_method
2608 Performs a callback to the specified Perl method. The blessed object must
2609 be on the stack. See L<perlcall>.
2615 Perl_call_method(pTHX_ const char *methname, I32 flags)
2616 /* name of the subroutine */
2617 /* See G_* flags in cop.h */
2621 PERL_ARGS_ASSERT_CALL_METHOD;
2623 len = strlen(methname);
2624 sv = flags & G_METHOD_NAMED
2625 ? sv_2mortal(newSVpvn_share(methname, len,0))
2626 : newSVpvn_flags(methname, len, SVs_TEMP);
2628 return call_sv(sv, flags | G_METHOD);
2631 /* May be called with any of a CV, a GV, or an SV containing the name. */
2633 =for apidoc p||call_sv
2635 Performs a callback to the Perl sub whose name is in the SV. See
2642 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2643 /* See G_* flags in cop.h */
2646 LOGOP myop; /* fake syntax tree node */
2652 bool oldcatch = CATCH_GET;
2654 OP* const oldop = PL_op;
2657 PERL_ARGS_ASSERT_CALL_SV;
2659 if (flags & G_DISCARD) {
2663 if (!(flags & G_WANT)) {
2664 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2669 Zero(&myop, 1, LOGOP);
2670 if (!(flags & G_NOARGS))
2671 myop.op_flags |= OPf_STACKED;
2672 myop.op_flags |= OP_GIMME_REVERSE(flags);
2676 EXTEND(PL_stack_sp, 1);
2677 if (!(flags & G_METHOD_NAMED))
2678 *++PL_stack_sp = sv;
2680 oldscope = PL_scopestack_ix;
2682 if (PERLDB_SUB && PL_curstash != PL_debstash
2683 /* Handle first BEGIN of -d. */
2684 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2685 /* Try harder, since this may have been a sighandler, thus
2686 * curstash may be meaningless. */
2687 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2688 && !(flags & G_NODEBUG))
2689 myop.op_private |= OPpENTERSUB_DB;
2691 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2692 if ( flags & G_METHOD_NAMED ) {
2693 Zero(&method_svop, 1, SVOP);
2694 method_svop.op_next = (OP*)&myop;
2695 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2696 method_svop.op_type = OP_METHOD_NAMED;
2697 method_svop.op_sv = sv;
2698 PL_op = (OP*)&method_svop;
2700 Zero(&method_unop, 1, UNOP);
2701 method_unop.op_next = (OP*)&myop;
2702 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2703 method_unop.op_type = OP_METHOD;
2704 PL_op = (OP*)&method_unop;
2706 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2707 myop.op_type = OP_ENTERSUB;
2711 if (!(flags & G_EVAL)) {
2713 CALL_BODY_SUB((OP*)&myop);
2714 retval = PL_stack_sp - (PL_stack_base + oldmark);
2715 CATCH_SET(oldcatch);
2718 myop.op_other = (OP*)&myop;
2720 create_eval_scope(flags|G_FAKINGEVAL);
2728 CALL_BODY_SUB((OP*)&myop);
2729 retval = PL_stack_sp - (PL_stack_base + oldmark);
2730 if (!(flags & G_KEEPERR)) {
2738 /* my_exit() was called */
2739 SET_CURSTASH(PL_defstash);
2743 assert(0); /* NOTREACHED */
2746 PL_restartjmpenv = NULL;
2747 PL_op = PL_restartop;
2751 PL_stack_sp = PL_stack_base + oldmark;
2752 if ((flags & G_WANT) == G_ARRAY)
2756 *++PL_stack_sp = &PL_sv_undef;
2761 if (PL_scopestack_ix > oldscope)
2762 delete_eval_scope();
2766 if (flags & G_DISCARD) {
2767 PL_stack_sp = PL_stack_base + oldmark;
2776 /* Eval a string. The G_EVAL flag is always assumed. */
2779 =for apidoc p||eval_sv
2781 Tells Perl to C<eval> the string in the SV. It supports the same flags
2782 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2788 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2790 /* See G_* flags in cop.h */
2794 UNOP myop; /* fake syntax tree node */
2795 VOL I32 oldmark = SP - PL_stack_base;
2798 OP* const oldop = PL_op;
2801 PERL_ARGS_ASSERT_EVAL_SV;
2803 if (flags & G_DISCARD) {
2810 Zero(&myop, 1, UNOP);
2811 EXTEND(PL_stack_sp, 1);
2812 *++PL_stack_sp = sv;
2814 if (!(flags & G_NOARGS))
2815 myop.op_flags = OPf_STACKED;
2816 myop.op_type = OP_ENTEREVAL;
2817 myop.op_flags |= OP_GIMME_REVERSE(flags);
2818 if (flags & G_KEEPERR)
2819 myop.op_flags |= OPf_SPECIAL;
2821 if (flags & G_RE_REPARSING)
2822 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2824 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2825 * before a PUSHEVAL, which corrupts the stack after a croak */
2826 TAINT_PROPER("eval_sv()");
2832 if (PL_op == (OP*)(&myop)) {
2833 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2835 goto fail; /* failed in compilation */
2838 retval = PL_stack_sp - (PL_stack_base + oldmark);
2839 if (!(flags & G_KEEPERR)) {
2847 /* my_exit() was called */
2848 SET_CURSTASH(PL_defstash);
2852 assert(0); /* NOTREACHED */
2855 PL_restartjmpenv = NULL;
2856 PL_op = PL_restartop;
2861 PL_stack_sp = PL_stack_base + oldmark;
2862 if ((flags & G_WANT) == G_ARRAY)
2866 *++PL_stack_sp = &PL_sv_undef;
2872 if (flags & G_DISCARD) {
2873 PL_stack_sp = PL_stack_base + oldmark;
2883 =for apidoc p||eval_pv
2885 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2891 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2893 SV* sv = newSVpv(p, 0);
2895 PERL_ARGS_ASSERT_EVAL_PV;
2897 eval_sv(sv, G_SCALAR);
2906 /* just check empty string or undef? */
2907 if (croak_on_error) {
2908 SV * const errsv = ERRSV;
2909 if(SvTRUE_NN(errsv))
2910 /* replace with croak_sv? */
2911 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2917 /* Require a module. */
2920 =head1 Embedding Functions
2922 =for apidoc p||require_pv
2924 Tells Perl to C<require> the file named by the string argument. It is
2925 analogous to the Perl code C<eval "require '$file'">. It's even
2926 implemented that way; consider using load_module instead.
2931 Perl_require_pv(pTHX_ const char *pv)
2936 PERL_ARGS_ASSERT_REQUIRE_PV;
2938 PUSHSTACKi(PERLSI_REQUIRE);
2939 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2940 eval_sv(sv_2mortal(sv), G_DISCARD);
2945 S_usage(pTHX) /* XXX move this out into a module ? */
2947 /* This message really ought to be max 23 lines.
2948 * Removed -h because the user already knows that option. Others? */
2950 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2951 minimum of 509 character string literals. */
2952 static const char * const usage_msg[] = {
2953 " -0[octal] specify record separator (\\0, if no argument)\n"
2954 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2955 " -C[number/list] enables the listed Unicode features\n"
2956 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2957 " -d[:debugger] run program under debugger\n"
2958 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2959 " -e program one line of program (several -e's allowed, omit programfile)\n"
2960 " -E program like -e, but enables all optional features\n"
2961 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2962 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2963 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2964 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2965 " -l[octal] enable line ending processing, specifies line terminator\n"
2966 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2967 " -n assume \"while (<>) { ... }\" loop around program\n"
2968 " -p assume loop like -n but print line also, like sed\n"
2969 " -s enable rudimentary parsing for switches after programfile\n"
2970 " -S look for programfile using PATH environment variable\n",
2971 " -t enable tainting warnings\n"
2972 " -T enable tainting checks\n"
2973 " -u dump core after parsing program\n"
2974 " -U allow unsafe operations\n"
2975 " -v print version, patchlevel and license\n"
2976 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2977 " -w enable many useful warnings\n"
2978 " -W enable all warnings\n"
2979 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2980 " -X disable all warnings\n"
2982 "Run 'perldoc perl' for more help with Perl.\n\n",
2985 const char * const *p = usage_msg;
2986 PerlIO *out = PerlIO_stdout();
2989 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2992 PerlIO_puts(out, *p++);
2996 /* convert a string of -D options (or digits) into an int.
2997 * sets *s to point to the char after the options */
3001 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3003 static const char * const usage_msgd[] = {
3004 " Debugging flag values: (see also -d)\n"
3005 " p Tokenizing and parsing (with v, displays parse stack)\n"
3006 " s Stack snapshots (with v, displays all stacks)\n"
3007 " l Context (loop) stack processing\n"
3008 " t Trace execution\n"
3009 " o Method and overloading resolution\n",
3010 " c String/numeric conversions\n"
3011 " P Print profiling info, source file input state\n"
3012 " m Memory and SV allocation\n"
3013 " f Format processing\n"
3014 " r Regular expression parsing and execution\n"
3015 " x Syntax tree dump\n",
3016 " u Tainting checks\n"
3017 " H Hash dump -- usurps values()\n"
3018 " X Scratchpad allocation\n"
3020 " S Op slab allocation\n"
3022 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3023 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3024 " v Verbose: use in conjunction with other flags\n"
3025 " C Copy On Write\n"
3026 " A Consistency checks on internal structures\n"
3027 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3028 " M trace smart match resolution\n"
3029 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3030 " L trace some locale setting information--for Perl core development\n",
3035 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3038 /* if adding extra options, remember to update DEBUG_MASK */
3039 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3041 for (; isWORDCHAR(**s); (*s)++) {
3042 const char * const d = strchr(debopts,**s);
3044 i |= 1 << (d - debopts);
3045 else if (ckWARN_d(WARN_DEBUGGING))
3046 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3047 "invalid option -D%c, use -D'' to see choices\n", **s);
3050 else if (isDIGIT(**s)) {
3052 i = grok_atou(*s, &e);
3055 for (; isWORDCHAR(**s); (*s)++) ;
3057 else if (givehelp) {
3058 const char *const *p = usage_msgd;
3059 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3062 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3063 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3064 "-Dp not implemented on this platform\n");
3070 /* This routine handles any switches that can be given during run */
3073 Perl_moreswitches(pTHX_ const char *s)
3077 const char option = *s; /* used to remember option in -m/-M code */
3079 PERL_ARGS_ASSERT_MORESWITCHES;
3087 SvREFCNT_dec(PL_rs);
3088 if (s[1] == 'x' && s[2]) {
3089 const char *e = s+=2;
3095 flags = PERL_SCAN_SILENT_ILLDIGIT;
3096 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3097 if (s + numlen < e) {
3098 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3102 PL_rs = newSVpvs("");
3103 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3104 tmps = (U8*)SvPVX(PL_rs);
3105 uvchr_to_utf8(tmps, rschar);
3106 SvCUR_set(PL_rs, UNISKIP(rschar));
3111 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3112 if (rschar & ~((U8)~0))
3113 PL_rs = &PL_sv_undef;
3114 else if (!rschar && numlen >= 2)
3115 PL_rs = newSVpvs("");
3117 char ch = (char)rschar;
3118 PL_rs = newSVpvn(&ch, 1);
3121 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3126 PL_unicode = parse_unicode_opts( (const char **)&s );
3127 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3135 while (*s && !isSPACE(*s)) ++s;
3136 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3148 forbid_setid('d', FALSE);
3151 /* -dt indicates to the debugger that threads will be used */
3152 if (*s == 't' && !isWORDCHAR(s[1])) {
3154 my_setenv("PERL5DB_THREADED", "1");
3157 /* The following permits -d:Mod to accepts arguments following an =
3158 in the fashion that -MSome::Mod does. */
3159 if (*s == ':' || *s == '=') {
3166 sv = newSVpvs("no Devel::");
3168 sv = newSVpvs("use Devel::");
3172 end = s + strlen(s);
3174 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3175 while(isWORDCHAR(*s) || *s==':') ++s;
3177 sv_catpvn(sv, start, end - start);
3179 sv_catpvn(sv, start, s-start);
3180 /* Don't use NUL as q// delimiter here, this string goes in the
3182 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3185 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3189 PL_perldb = PERLDB_ALL;
3196 forbid_setid('D', FALSE);
3198 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3199 #else /* !DEBUGGING */
3200 if (ckWARN_d(WARN_DEBUGGING))
3201 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3202 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3203 for (s++; isWORDCHAR(*s); s++) ;
3210 Safefree(PL_inplace);
3211 #if defined(__CYGWIN__) /* do backup extension automagically */
3212 if (*(s+1) == '\0') {
3213 PL_inplace = savepvs(".bak");
3216 #endif /* __CYGWIN__ */
3218 const char * const start = ++s;
3219 while (*s && !isSPACE(*s))
3222 PL_inplace = savepvn(start, s - start);
3226 if (*s == '-') /* Additional switches on #! line. */
3230 case 'I': /* -I handled both here and in parse_body() */
3231 forbid_setid('I', FALSE);
3233 while (*s && isSPACE(*s))
3238 /* ignore trailing spaces (possibly followed by other switches) */
3240 for (e = p; *e && !isSPACE(*e); e++) ;
3244 } while (*p && *p != '-');
3246 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3252 Perl_croak(aTHX_ "No directory specified for -I");
3258 SvREFCNT_dec(PL_ors_sv);
3264 PL_ors_sv = newSVpvs("\n");
3265 numlen = 3 + (*s == '0');
3266 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3270 if (RsPARA(PL_rs)) {
3271 PL_ors_sv = newSVpvs("\n\n");
3274 PL_ors_sv = newSVsv(PL_rs);
3279 forbid_setid('M', FALSE); /* XXX ? */
3282 forbid_setid('m', FALSE); /* XXX ? */
3287 const char *use = "use ";
3289 /* -M-foo == 'no foo' */
3290 /* Leading space on " no " is deliberate, to make both
3291 possibilities the same length. */
3292 if (*s == '-') { use = " no "; ++s; }
3293 sv = newSVpvn(use,4);
3295 /* We allow -M'Module qw(Foo Bar)' */
3296 while(isWORDCHAR(*s) || *s==':') {
3305 Perl_croak(aTHX_ "Module name required with -%c option",
3308 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3309 "contains single ':'",
3310 (int)(s - start), start, option);
3311 end = s + strlen(s);
3313 sv_catpvn(sv, start, end - start);
3314 if (option == 'm') {
3316 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3317 sv_catpvs( sv, " ()");
3320 sv_catpvn(sv, start, s-start);
3321 /* Use NUL as q''-delimiter. */
3322 sv_catpvs(sv, " split(/,/,q\0");
3324 sv_catpvn(sv, s, end - s);
3325 sv_catpvs(sv, "\0)");
3328 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3331 Perl_croak(aTHX_ "Missing argument to -%c", option);
3342 forbid_setid('s', FALSE);
3343 PL_doswitches = TRUE;
3348 #if defined(SILENT_NO_TAINT_SUPPORT)
3349 /* silently ignore */
3350 #elif defined(NO_TAINT_SUPPORT)
3351 Perl_croak_nocontext("This perl was compiled without taint support. "
3352 "Cowardly refusing to run with -t or -T flags");
3360 PL_do_undump = TRUE;
3370 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3371 PL_dowarn |= G_WARN_ON;
3376 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3377 if (!specialWARN(PL_compiling.cop_warnings))
3378 PerlMemShared_free(PL_compiling.cop_warnings);
3379 PL_compiling.cop_warnings = pWARN_ALL ;
3383 PL_dowarn = G_WARN_ALL_OFF;
3384 if (!specialWARN(PL_compiling.cop_warnings))
3385 PerlMemShared_free(PL_compiling.cop_warnings);
3386 PL_compiling.cop_warnings = pWARN_NONE ;
3393 if (s[0] == '-') /* Additional switches on #! line. */
3398 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3404 #ifdef ALTERNATE_SHEBANG
3405 case 'S': /* OS/2 needs -S on "extproc" line. */
3408 case 'e': case 'f': case 'x': case 'E':
3409 #ifndef ALTERNATE_SHEBANG
3413 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3416 "Unrecognized switch: -%.1s (-h will show valid options)",s
3426 PerlIO * PIO_stdout;
3428 const char * const level_str = "v" PERL_VERSION_STRING;
3429 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3430 #ifdef PERL_PATCHNUM
3432 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3433 static const char num [] = PERL_PATCHNUM "*";
3435 static const char num [] = PERL_PATCHNUM;
3438 const STRLEN num_len = sizeof(num)-1;
3439 /* A very advanced compiler would fold away the strnEQ
3440 and this whole conditional, but most (all?) won't do it.
3441 SV level could also be replaced by with preprocessor
3444 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3445 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3446 of the interp so it might contain format characters
3448 level = newSVpvn(num, num_len);
3450 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3454 SV* level = newSVpvn(level_str, level_len);
3455 #endif /* #ifdef PERL_PATCHNUM */
3456 PIO_stdout = PerlIO_stdout();
3457 PerlIO_printf(PIO_stdout,
3458 "\nThis is perl " STRINGIFY(PERL_REVISION)
3459 ", version " STRINGIFY(PERL_VERSION)
3460 ", subversion " STRINGIFY(PERL_SUBVERSION)
3461 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3463 SvREFCNT_dec_NN(level);
3465 #if defined(LOCAL_PATCH_COUNT)
3466 if (LOCAL_PATCH_COUNT > 0)
3467 PerlIO_printf(PIO_stdout,
3468 "\n(with %d registered patch%s, "
3469 "see perl -V for more detail)",
3471 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3474 PerlIO_printf(PIO_stdout,
3475 "\n\nCopyright 1987-2014, Larry Wall\n");
3477 PerlIO_printf(PIO_stdout,
3478 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3481 PerlIO_printf(PIO_stdout,
3482 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3483 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3486 PerlIO_printf(PIO_stdout,
3487 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3488 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3491 PerlIO_printf(PIO_stdout,
3492 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3495 PerlIO_printf(PIO_stdout,
3496 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3499 PerlIO_printf(PIO_stdout,
3500 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3503 PerlIO_printf(PIO_stdout,
3504 "WINCE port by Rainer Keuchel, 2001-2002\n"
3505 "Built on " __DATE__ " " __TIME__ "\n\n");
3508 #ifdef __SYMBIAN32__
3509 PerlIO_printf(PIO_stdout,
3510 "Symbian port by Nokia, 2004-2005\n");
3512 #ifdef BINARY_BUILD_NOTICE
3513 BINARY_BUILD_NOTICE;
3515 PerlIO_printf(PIO_stdout,
3517 Perl may be copied only under the terms of either the Artistic License or the\n\
3518 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3519 Complete documentation for Perl, including FAQ lists, should be found on\n\
3520 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3521 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3525 /* compliments of Tom Christiansen */
3527 /* unexec() can be found in the Gnu emacs distribution */
3528 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3531 #include <lib$routines.h>
3535 Perl_my_unexec(pTHX)
3538 SV * prog = newSVpv(BIN_EXP, 0);
3539 SV * file = newSVpv(PL_origfilename, 0);
3543 sv_catpvs(prog, "/perl");
3544 sv_catpvs(file, ".perldump");
3546 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3547 /* unexec prints msg to stderr in case of failure */
3548 PerlProc_exit(status);
3550 PERL_UNUSED_CONTEXT;
3552 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3553 # elif defined(WIN32) || defined(__CYGWIN__)
3554 Perl_croak_nocontext("dump is not supported");
3556 ABORT(); /* for use with undump */
3561 /* initialize curinterp */
3566 # define PERLVAR(prefix,var,type)
3567 # define PERLVARA(prefix,var,n,type)
3568 # if defined(PERL_IMPLICIT_CONTEXT)
3569 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3570 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3572 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3573 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3575 # include "intrpvar.h"
3581 # define PERLVAR(prefix,var,type)
3582 # define PERLVARA(prefix,var,n,type)
3583 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3584 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3585 # include "intrpvar.h"
3595 S_init_main_stash(pTHX)
3599 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3600 /* We know that the string "main" will be in the global shared string
3601 table, so it's a small saving to use it rather than allocate another
3603 PL_curstname = newSVpvs_share("main");
3604 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3605 /* If we hadn't caused another reference to "main" to be in the shared
3606 string table above, then it would be worth reordering these two,
3607 because otherwise all we do is delete "main" from it as a consequence
3608 of the SvREFCNT_dec, only to add it again with hv_name_set */
3609 SvREFCNT_dec(GvHV(gv));
3610 hv_name_set(PL_defstash, "main", 4, 0);
3611 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3613 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3615 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3616 GvMULTI_on(PL_incgv);
3617 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3618 SvREFCNT_inc_simple_void(PL_hintgv);
3619 GvMULTI_on(PL_hintgv);
3620 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3621 SvREFCNT_inc_simple_void(PL_defgv);
3622 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3623 SvREFCNT_inc_simple_void(PL_errgv);
3624 GvMULTI_on(PL_errgv);
3625 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3626 SvREFCNT_inc_simple_void(PL_replgv);
3627 GvMULTI_on(PL_replgv);
3628 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3629 #ifdef PERL_DONT_CREATE_GVSV
3632 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3634 SET_CURSTASH(PL_defstash);
3635 CopSTASH_set(&PL_compiling, PL_defstash);
3636 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3637 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3639 /* We must init $/ before switches are processed. */
3640 sv_setpvs(get_sv("/", GV_ADD), "\n");
3644 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3647 PerlIO *rsfp = NULL;
3651 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3654 PL_origfilename = savepvs("-e");
3657 /* if find_script() returns, it returns a malloc()-ed value */
3658 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3660 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3661 const char *s = scriptname + 8;
3663 fdscript = grok_atou(s, &e);
3667 * Tell apart "normal" usage of fdscript, e.g.
3668 * with bash on FreeBSD:
3669 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3670 * from usage in suidperl.
3671 * Does any "normal" usage leave garbage after the number???
3672 * Is it a mistake to use a similar /dev/fd/ construct for
3677 * Be supersafe and do some sanity-checks.
3678 * Still, can we be sure we got the right thing?
3681 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3684 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3686 scriptname = savepv(s + 1);
3687 Safefree(PL_origfilename);
3688 PL_origfilename = (char *)scriptname;
3693 CopFILE_free(PL_curcop);
3694 CopFILE_set(PL_curcop, PL_origfilename);
3695 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3696 scriptname = (char *)"";
3697 if (fdscript >= 0) {
3698 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3700 else if (!*scriptname) {
3701 forbid_setid(0, *suidscript);
3705 #ifdef FAKE_BIT_BUCKET
3706 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3707 * is called) and still have the "-e" work. (Believe it or not,
3708 * a /dev/null is required for the "-e" to work because source
3709 * filter magic is used to implement it. ) This is *not* a general
3710 * replacement for a /dev/null. What we do here is create a temp
3711 * file (an empty file), open up that as the script, and then
3712 * immediately close and unlink it. Close enough for jazz. */
3713 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3714 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3715 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3716 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3717 FAKE_BIT_BUCKET_TEMPLATE
3719 const char * const err = "Failed to create a fake bit bucket";
3720 if (strEQ(scriptname, BIT_BUCKET)) {
3721 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3722 int old_umask = umask(0600);
3723 int tmpfd = mkstemp(tmpname);
3726 scriptname = tmpname;
3729 Perl_croak(aTHX_ err);
3732 scriptname = mktemp(tmpname);
3734 Perl_croak(aTHX_ err);
3739 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3740 #ifdef FAKE_BIT_BUCKET
3741 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3742 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3743 && strlen(scriptname) == sizeof(tmpname) - 1) {
3746 scriptname = BIT_BUCKET;
3750 /* PSz 16 Sep 03 Keep neat error message */
3752 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3754 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3755 CopFILE(PL_curcop), Strerror(errno));
3757 fd = PerlIO_fileno(rsfp);
3758 #if defined(HAS_FCNTL) && defined(F_SETFD)
3760 /* ensure close-on-exec */
3761 if (fcntl(fd, F_SETFD, 1) < 0) {
3762 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3763 CopFILE(PL_curcop), Strerror(errno));
3769 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3770 && S_ISDIR(tmpstatbuf.st_mode)))
3771 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3779 * I_SYSSTATVFS HAS_FSTATVFS
3781 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3782 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3783 * here so that metaconfig picks them up. */
3786 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3787 /* Don't even need this function. */
3790 S_validate_suid(pTHX_ PerlIO *rsfp)
3792 const Uid_t my_uid = PerlProc_getuid();
3793 const Uid_t my_euid = PerlProc_geteuid();
3794 const Gid_t my_gid = PerlProc_getgid();
3795 const Gid_t my_egid = PerlProc_getegid();
3797 PERL_ARGS_ASSERT_VALIDATE_SUID;
3799 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3801 int fd = PerlIO_fileno(rsfp);
3803 Perl_croak(aTHX_ "Illegal suidscript");
3805 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3806 Perl_croak(aTHX_ "Illegal suidscript");
3809 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3811 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3814 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3815 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3816 /* not set-id, must be wrapped */
3819 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3822 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3827 PERL_ARGS_ASSERT_FIND_BEGINNING;
3829 /* skip forward in input to the real script? */
3832 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3833 Perl_croak(aTHX_ "No Perl script found in input\n");
3835 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3836 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3837 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3839 while (*s == ' ' || *s == '\t') s++;
3841 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3842 || s2[-1] == '_') s2--;
3843 if (strnEQ(s2-4,"perl",4))
3844 while ((s = moreswitches(s)))
3853 /* no need to do anything here any more if we don't
3855 #ifndef NO_TAINT_SUPPORT
3856 const Uid_t my_uid = PerlProc_getuid();
3857 const Uid_t my_euid = PerlProc_geteuid();
3858 const Gid_t my_gid = PerlProc_getgid();
3859 const Gid_t my_egid = PerlProc_getegid();
3861 PERL_UNUSED_CONTEXT;
3863 /* Should not happen: */
3864 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3865 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3869 * Should go by suidscript, not uid!=euid: why disallow
3870 * system("ls") in scripts run from setuid things?
3871 * Or, is this run before we check arguments and set suidscript?
3872 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3873 * (We never have suidscript, can we be sure to have fdscript?)
3874 * Or must then go by UID checks? See comments in forbid_setid also.
3878 /* This is used very early in the lifetime of the program,
3879 * before even the options are parsed, so PL_tainting has
3880 * not been initialized properly. */
3882 Perl_doing_taint(int argc, char *argv[], char *envp[])
3884 #ifndef PERL_IMPLICIT_SYS
3885 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3886 * before we have an interpreter-- and the whole point of this
3887 * function is to be called at such an early stage. If you are on
3888 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3889 * "tainted because running with altered effective ids', you'll
3890 * have to add your own checks somewhere in here. The two most
3891 * known samples of 'implicitness' are Win32 and NetWare, neither
3892 * of which has much of concept of 'uids'. */
3893 Uid_t uid = PerlProc_getuid();
3894 Uid_t euid = PerlProc_geteuid();
3895 Gid_t gid = PerlProc_getgid();
3896 Gid_t egid = PerlProc_getegid();
3903 if (uid && (euid != uid || egid != gid))
3905 #endif /* !PERL_IMPLICIT_SYS */
3906 /* This is a really primitive check; environment gets ignored only
3907 * if -T are the first chars together; otherwise one gets
3908 * "Too late" message. */
3909 if ( argc > 1 && argv[1][0] == '-'
3910 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3915 /* Passing the flag as a single char rather than a string is a slight space
3916 optimisation. The only message that isn't /^-.$/ is
3917 "program input from stdin", which is substituted in place of '\0', which
3918 could never be a command line flag. */
3920 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3922 char string[3] = "-x";
3923 const char *message = "program input from stdin";
3925 PERL_UNUSED_CONTEXT;
3931 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3932 if (PerlProc_getuid() != PerlProc_geteuid())
3933 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3934 if (PerlProc_getgid() != PerlProc_getegid())
3935 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3936 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3938 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3942 Perl_init_dbargs(pTHX)
3944 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3949 /* Someone has already created it.
3950 It might have entries, and if we just turn off AvREAL(), they will
3951 "leak" until global destruction. */
3953 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3954 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3956 AvREIFY_only(PL_dbargs);
3960 Perl_init_debugger(pTHX)
3962 HV * const ostash = PL_curstash;
3964 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3966 Perl_init_dbargs(aTHX);
3967 PL_DBgv = MUTABLE_GV(
3968 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3970 PL_DBline = MUTABLE_GV(
3971 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3973 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3974 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3976 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3977 if (!SvIOK(PL_DBsingle))
3978 sv_setiv(PL_DBsingle, 0);
3979 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3980 if (!SvIOK(PL_DBtrace))
3981 sv_setiv(PL_DBtrace, 0);
3982 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3983 if (!SvIOK(PL_DBsignal))
3984 sv_setiv(PL_DBsignal, 0);
3985 SvREFCNT_dec(PL_curstash);
3986 PL_curstash = ostash;
3989 #ifndef STRESS_REALLOC
3990 #define REASONABLE(size) (size)
3991 #define REASONABLE_but_at_least(size,min) (size)
3993 #define REASONABLE(size) (1) /* unreasonable */
3994 #define REASONABLE_but_at_least(size,min) (min)
3998 Perl_init_stacks(pTHX)
4000 /* start with 128-item stack and 8K cxstack */
4001 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4002 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4003 PL_curstackinfo->si_type = PERLSI_MAIN;
4004 PL_curstack = PL_curstackinfo->si_stack;
4005 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4007 PL_stack_base = AvARRAY(PL_curstack);
4008 PL_stack_sp = PL_stack_base;
4009 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4011 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4014 PL_tmps_max = REASONABLE(128);
4016 Newx(PL_markstack,REASONABLE(32),I32);
4017 PL_markstack_ptr = PL_markstack;
4018 PL_markstack_max = PL_markstack + REASONABLE(32);
4022 Newx(PL_scopestack,REASONABLE(32),I32);
4024 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4026 PL_scopestack_ix = 0;
4027 PL_scopestack_max = REASONABLE(32);
4029 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4030 PL_savestack_ix = 0;
4031 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4039 while (PL_curstackinfo->si_next)
4040 PL_curstackinfo = PL_curstackinfo->si_next;
4041 while (PL_curstackinfo) {
4042 PERL_SI *p = PL_curstackinfo->si_prev;
4043 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4044 Safefree(PL_curstackinfo->si_cxstack);
4045 Safefree(PL_curstackinfo);
4046 PL_curstackinfo = p;
4048 Safefree(PL_tmps_stack);
4049 Safefree(PL_markstack);
4050 Safefree(PL_scopestack);
4052 Safefree(PL_scopestack_name);
4054 Safefree(PL_savestack);
4058 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4060 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4061 AV *const isa = GvAVn(gv);
4064 PERL_ARGS_ASSERT_POPULATE_ISA;
4066 if(AvFILLp(isa) != -1)
4069 /* NOTE: No support for tied ISA */
4071 va_start(args, len);
4073 const char *const parent = va_arg(args, const char*);
4078 parent_len = va_arg(args, size_t);
4080 /* Arguments are supplied with a trailing :: */
4081 assert(parent_len > 2);
4082 assert(parent[parent_len - 1] == ':');
4083 assert(parent[parent_len - 2] == ':');
4084 av_push(isa, newSVpvn(parent, parent_len - 2));
4085 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4092 S_init_predump_symbols(pTHX)
4097 sv_setpvs(get_sv("\"", GV_ADD), " ");
4098 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4101 /* Historically, PVIOs were blessed into IO::Handle, unless
4102 FileHandle was loaded, in which case they were blessed into
4103 that. Action at a distance.
4104 However, if we simply bless into IO::Handle, we break code
4105 that assumes that PVIOs will have (among others) a seek
4106 method. IO::File inherits from IO::Handle and IO::Seekable,
4107 and provides the needed methods. But if we simply bless into
4108 it, then we break code that assumed that by loading
4109 IO::Handle, *it* would work.
4110 So a compromise is to set up the correct @IO::File::ISA,
4111 so that code that does C<use IO::Handle>; will still work.
4114 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4115 STR_WITH_LEN("IO::Handle::"),
4116 STR_WITH_LEN("IO::Seekable::"),
4117 STR_WITH_LEN("Exporter::"),
4120 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4121 GvMULTI_on(PL_stdingv);
4122 io = GvIOp(PL_stdingv);
4123 IoTYPE(io) = IoTYPE_RDONLY;
4124 IoIFP(io) = PerlIO_stdin();
4125 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4127 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4129 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4132 IoTYPE(io) = IoTYPE_WRONLY;
4133 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4135 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4137 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4139 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4140 GvMULTI_on(PL_stderrgv);
4141 io = GvIOp(PL_stderrgv);
4142 IoTYPE(io) = IoTYPE_WRONLY;
4143 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4144 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4146 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4148 PL_statname = newSVpvs(""); /* last filename we did stat on */
4152 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4154 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4156 argc--,argv++; /* skip name of script */
4157 if (PL_doswitches) {
4158 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4162 if (argv[0][1] == '-' && !argv[0][2]) {
4166 if ((s = strchr(argv[0], '='))) {
4167 const char *const start_name = argv[0] + 1;
4168 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4169 TRUE, SVt_PV)), s + 1);
4172 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4175 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4176 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4177 GvMULTI_on(PL_argvgv);
4178 av_clear(GvAVn(PL_argvgv));
4179 for (; argc > 0; argc--,argv++) {
4180 SV * const sv = newSVpv(argv[0],0);
4181 av_push(GvAV(PL_argvgv),sv);
4182 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4183 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4186 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4187 (void)sv_utf8_decode(sv);
4191 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4192 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4193 "-i used with no filenames on the command line, "
4194 "reading from STDIN");
4198 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4205 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4207 PL_toptarget = newSV_type(SVt_PVIV);
4208 sv_setpvs(PL_toptarget, "");
4209 PL_bodytarget = newSV_type(SVt_PVIV);
4210 sv_setpvs(PL_bodytarget, "");
4211 PL_formtarget = PL_bodytarget;
4215 init_argv_symbols(argc,argv);
4217 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4218 sv_setpv(GvSV(tmpgv),PL_origfilename);
4220 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4222 bool env_is_not_environ;
4223 SvREFCNT_inc_simple_void_NN(PL_envgv);
4224 GvMULTI_on(PL_envgv);
4225 hv = GvHVn(PL_envgv);
4226 hv_magic(hv, NULL, PERL_MAGIC_env);
4228 #ifdef USE_ENVIRON_ARRAY
4229 /* Note that if the supplied env parameter is actually a copy
4230 of the global environ then it may now point to free'd memory
4231 if the environment has been modified since. To avoid this
4232 problem we treat env==NULL as meaning 'use the default'
4236 env_is_not_environ = env != environ;
4237 if (env_is_not_environ
4238 # ifdef USE_ITHREADS
4239 && PL_curinterp == aTHX
4248 for (; *env; env++) {
4251 if (!(s = strchr(old_var,'=')) || s == old_var)
4254 #if defined(MSDOS) && !defined(DJGPP)
4256 (void)strupr(old_var);
4259 sv = newSVpv(s+1, 0);
4260 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4261 if (env_is_not_environ)
4265 #endif /* USE_ENVIRON_ARRAY */
4266 #endif /* !PERL_MICRO */
4270 /* touch @F array to prevent spurious warnings 20020415 MJD */
4272 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4277 S_init_perllib(pTHX)
4280 const char *perl5lib = NULL;
4283 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4287 if (!TAINTING_get) {
4289 perl5lib = PerlEnv_getenv("PERL5LIB");
4291 * It isn't possible to delete an environment variable with
4292 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4293 * case we treat PERL5LIB as undefined if it has a zero-length value.
4295 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4296 if (perl5lib && *perl5lib != '\0')
4300 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4302 s = PerlEnv_getenv("PERLLIB");
4304 incpush_use_sep(s, 0, 0);
4307 /* Treat PERL5?LIB as a possible search list logical name -- the
4308 * "natural" VMS idiom for a Unix path string. We allow each
4309 * element to be a set of |-separated directories for compatibility.
4313 if (my_trnlnm("PERL5LIB",buf,0))
4315 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4316 } while (my_trnlnm("PERL5LIB",buf,++idx));
4318 while (my_trnlnm("PERLLIB",buf,idx++))
4319 incpush_use_sep(buf, 0, 0);
4324 #ifndef PERL_IS_MINIPERL
4325 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4326 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4328 /* Use the ~-expanded versions of APPLLIB (undocumented),
4329 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4332 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4333 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4337 /* sitearch is always relative to sitelib on Windows for
4338 * DLL-based path intuition to work correctly */
4339 # if !defined(WIN32)
4340 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4341 INCPUSH_CAN_RELOCATE);
4347 /* this picks up sitearch as well */
4348 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4350 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4352 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4356 #ifdef PERL_VENDORARCH_EXP
4357 /* vendorarch is always relative to vendorlib on Windows for
4358 * DLL-based path intuition to work correctly */
4359 # if !defined(WIN32)
4360 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4361 INCPUSH_CAN_RELOCATE);
4365 #ifdef PERL_VENDORLIB_EXP
4367 /* this picks up vendorarch as well */
4368 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4370 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4372 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4373 INCPUSH_CAN_RELOCATE);
4378 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4382 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4386 s = win32_get_privlib(PERL_FS_VERSION, &len);
4388 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4391 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4393 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4397 #ifdef PERL_OTHERLIBDIRS
4398 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4399 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4400 |INCPUSH_CAN_RELOCATE);
4403 if (!TAINTING_get) {
4406 * It isn't possible to delete an environment variable with
4407 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4408 * case we treat PERL5LIB as undefined if it has a zero-length value.
4410 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4411 if (perl5lib && *perl5lib != '\0')
4415 incpush_use_sep(perl5lib, 0,
4416 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4418 /* Treat PERL5?LIB as a possible search list logical name -- the
4419 * "natural" VMS idiom for a Unix path string. We allow each
4420 * element to be a set of |-separated directories for compatibility.
4424 if (my_trnlnm("PERL5LIB",buf,0))
4426 incpush_use_sep(buf, 0,
4427 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4428 } while (my_trnlnm("PERL5LIB",buf,++idx));
4432 /* Use the ~-expanded versions of APPLLIB (undocumented),
4433 SITELIB and VENDORLIB for older versions
4436 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4437 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4440 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4441 /* Search for version-specific dirs below here */
4442 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4443 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4447 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4448 /* Search for version-specific dirs below here */
4449 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4450 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4453 #ifdef PERL_OTHERLIBDIRS
4454 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4455 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4456 |INCPUSH_CAN_RELOCATE);
4458 #endif /* !PERL_IS_MINIPERL */
4461 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4464 #if defined(DOSISH) || defined(__SYMBIAN32__)
4465 # define PERLLIB_SEP ';'
4468 # define PERLLIB_SEP '|'
4470 # define PERLLIB_SEP ':'
4473 #ifndef PERLLIB_MANGLE
4474 # define PERLLIB_MANGLE(s,n) (s)
4477 #ifndef PERL_IS_MINIPERL
4478 /* Push a directory onto @INC if it exists.
4479 Generate a new SV if we do this, to save needing to copy the SV we push
4482 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4486 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4488 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4489 S_ISDIR(tmpstatbuf.st_mode)) {
4491 dir = newSVsv(stem);
4493 /* Truncate dir back to stem. */
4494 SvCUR_set(dir, SvCUR(stem));
4501 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4503 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4506 PERL_ARGS_ASSERT_MAYBERELOCATE;
4509 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4510 defined to so something (in os2/os2.c), but the code has been
4511 this way, ignoring any possible changed of length, since
4512 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4514 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4520 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4522 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4523 sv_usepvn(libdir,unix,len);
4526 PerlIO_printf(Perl_error_log,
4527 "Failed to unixify @INC element \"%s\"\n",
4528 SvPV_nolen_const(libdir));
4532 /* Do the if() outside the #ifdef to avoid warnings about an unused
4535 #ifdef PERL_RELOCATABLE_INC
4537 * Relocatable include entries are marked with a leading .../
4540 * 0: Remove that leading ".../"
4541 * 1: Remove trailing executable name (anything after the last '/')
4542 * from the perl path to give a perl prefix
4544 * While the @INC element starts "../" and the prefix ends with a real
4545 * directory (ie not . or ..) chop that real directory off the prefix
4546 * and the leading "../" from the @INC element. ie a logical "../"
4548 * Finally concatenate the prefix and the remainder of the @INC element
4549 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4550 * generates /usr/local/lib/perl5
4552 const char *libpath = SvPVX(libdir);
4553 STRLEN libpath_len = SvCUR(libdir);
4554 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4556 SV * const caret_X = get_sv("\030", 0);
4557 /* Going to use the SV just as a scratch buffer holding a C
4563 /* $^X is *the* source of taint if tainting is on, hence
4564 SvPOK() won't be true. */
4566 assert(SvPOKp(caret_X));
4567 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4569 /* Firstly take off the leading .../
4570 If all else fail we'll do the paths relative to the current
4572 sv_chop(libdir, libpath + 4);
4573 /* Don't use SvPV as we're intentionally bypassing taining,
4574 mortal copies that the mg_get of tainting creates, and
4575 corruption that seems to come via the save stack.
4576 I guess that the save stack isn't correctly set up yet. */
4577 libpath = SvPVX(libdir);
4578 libpath_len = SvCUR(libdir);
4580 /* This would work more efficiently with memrchr, but as it's
4581 only a GNU extension we'd need to probe for it and
4582 implement our own. Not hard, but maybe not worth it? */
4584 prefix = SvPVX(prefix_sv);
4585 lastslash = strrchr(prefix, '/');
4587 /* First time in with the *lastslash = '\0' we just wipe off
4588 the trailing /perl from (say) /usr/foo/bin/perl
4592 while ((*lastslash = '\0'), /* Do that, come what may. */
4593 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4594 && (lastslash = strrchr(prefix, '/')))) {
4595 if (lastslash[1] == '\0'
4596 || (lastslash[1] == '.'
4597 && (lastslash[2] == '/' /* ends "/." */
4598 || (lastslash[2] == '/'
4599 && lastslash[3] == '/' /* or "/.." */
4601 /* Prefix ends "/" or "/." or "/..", any of which
4602 are fishy, so don't do any more logical cleanup.
4606 /* Remove leading "../" from path */
4609 /* Next iteration round the loop removes the last
4610 directory name from prefix by writing a '\0' in
4611 the while clause. */
4613 /* prefix has been terminated with a '\0' to the correct
4614 length. libpath points somewhere into the libdir SV.
4615 We need to join the 2 with '/' and drop the result into
4617 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4618 SvREFCNT_dec(libdir);
4619 /* And this is the new libdir. */
4622 (PerlProc_getuid() != PerlProc_geteuid() ||
4623 PerlProc_getgid() != PerlProc_getegid())) {
4624 /* Need to taint relocated paths if running set ID */
4625 SvTAINTED_on(libdir);
4628 SvREFCNT_dec(prefix_sv);
4636 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4638 #ifndef PERL_IS_MINIPERL
4639 const U8 using_sub_dirs
4640 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4641 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4642 const U8 add_versioned_sub_dirs
4643 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4644 const U8 add_archonly_sub_dirs
4645 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4646 #ifdef PERL_INC_VERSION_LIST
4647 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4650 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4651 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4652 AV *const inc = GvAVn(PL_incgv);
4654 PERL_ARGS_ASSERT_INCPUSH;
4657 /* Could remove this vestigial extra block, if we don't mind a lot of
4658 re-indenting diff noise. */
4660 SV *const libdir = mayberelocate(dir, len, flags);
4661 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4662 arranged to unshift #! line -I onto the front of @INC. However,
4663 -I can add version and architecture specific libraries, and they
4664 need to go first. The old code assumed that it was always
4665 pushing. Hence to make it work, need to push the architecture
4666 (etc) libraries onto a temporary array, then "unshift" that onto
4667 the front of @INC. */
4668 #ifndef PERL_IS_MINIPERL
4669 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4672 * BEFORE pushing libdir onto @INC we may first push version- and
4673 * archname-specific sub-directories.
4675 if (using_sub_dirs) {
4676 SV *subdir = newSVsv(libdir);
4677 #ifdef PERL_INC_VERSION_LIST
4678 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4679 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4680 const char * const *incver;
4683 if (add_versioned_sub_dirs) {
4684 /* .../version/archname if -d .../version/archname */
4685 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4686 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4688 /* .../version if -d .../version */
4689 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4690 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4693 #ifdef PERL_INC_VERSION_LIST
4695 for (incver = incverlist; *incver; incver++) {
4696 /* .../xxx if -d .../xxx */
4697 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4698 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4703 if (add_archonly_sub_dirs) {
4704 /* .../archname if -d .../archname */
4705 sv_catpvs(subdir, "/" ARCHNAME);
4706 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4710 assert (SvREFCNT(subdir) == 1);
4711 SvREFCNT_dec(subdir);
4713 #endif /* !PERL_IS_MINIPERL */
4714 /* finally add this lib directory at the end of @INC */
4716 #ifdef PERL_IS_MINIPERL
4717 const Size_t extra = 0;
4719 Size_t extra = av_tindex(av) + 1;
4721 av_unshift(inc, extra + push_basedir);
4723 av_store(inc, extra, libdir);
4724 #ifndef PERL_IS_MINIPERL
4726 /* av owns a reference, av_store() expects to be donated a
4727 reference, and av expects to be sane when it's cleared.
4728 If I wanted to be naughty and wrong, I could peek inside the
4729 implementation of av_clear(), realise that it uses
4730 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4731 and so directly steal from it (with a memcpy() to inc, and
4732 then memset() to NULL them out. But people copy code from the
4733 core expecting it to be best practise, so let's use the API.
4734 Although studious readers will note that I'm not checking any
4736 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4741 else if (push_basedir) {
4742 av_push(inc, libdir);
4745 if (!push_basedir) {
4746 assert (SvREFCNT(libdir) == 1);
4747 SvREFCNT_dec(libdir);
4753 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4757 /* This logic has been broken out from S_incpush(). It may be possible to
4760 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4762 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4763 * argument to incpush_use_sep. This allows creation of relocatable
4764 * Perl distributions that patch the binary at install time. Those
4765 * distributions will have to provide their own relocation tools; this
4766 * is not a feature otherwise supported by core Perl.
4768 #ifndef PERL_RELOCATABLE_INCPUSH
4775 /* Break at all separators */
4776 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4778 /* skip any consecutive separators */
4780 /* Uncomment the next line for PATH semantics */
4781 /* But you'll need to write tests */
4782 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4784 incpush(p, (STRLEN)(s - p), flags);
4789 incpush(p, (STRLEN)(end - p), flags);
4794 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4797 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4803 PERL_ARGS_ASSERT_CALL_LIST;
4805 while (av_tindex(paramList) >= 0) {
4806 cv = MUTABLE_CV(av_shift(paramList));
4808 if (paramList == PL_beginav) {
4809 /* save PL_beginav for compiler */
4810 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4812 else if (paramList == PL_checkav) {
4813 /* save PL_checkav for compiler */
4814 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4816 else if (paramList == PL_unitcheckav) {
4817 /* save PL_unitcheckav for compiler */
4818 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4828 (void)SvPV_const(atsv, len);
4830 PL_curcop = &PL_compiling;
4831 CopLINE_set(PL_curcop, oldline);
4832 if (paramList == PL_beginav)
4833 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4835 Perl_sv_catpvf(aTHX_ atsv,
4836 "%s failed--call queue aborted",
4837 paramList == PL_checkav ? "CHECK"
4838 : paramList == PL_initav ? "INIT"
4839 : paramList == PL_unitcheckav ? "UNITCHECK"
4841 while (PL_scopestack_ix > oldscope)
4844 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4851 /* my_exit() was called */
4852 while (PL_scopestack_ix > oldscope)
4855 SET_CURSTASH(PL_defstash);
4856 PL_curcop = &PL_compiling;
4857 CopLINE_set(PL_curcop, oldline);
4860 assert(0); /* NOTREACHED */
4863 PL_curcop = &PL_compiling;
4864 CopLINE_set(PL_curcop, oldline);
4867 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4876 Perl_my_exit(pTHX_ U32 status)
4878 if (PL_exit_flags & PERL_EXIT_ABORT) {
4881 if (PL_exit_flags & PERL_EXIT_WARN) {
4882 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4883 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4884 PL_exit_flags &= ~PERL_EXIT_ABORT;
4894 STATUS_EXIT_SET(status);
4901 Perl_my_failure_exit(pTHX)
4904 /* We have been called to fall on our sword. The desired exit code
4905 * should be already set in STATUS_UNIX, but could be shifted over
4906 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4909 * If an error code has not been set, then force the issue.
4911 if (MY_POSIX_EXIT) {
4913 /* According to the die_exit.t tests, if errno is non-zero */
4914 /* It should be used for the error status. */
4916 if (errno == EVMSERR) {
4917 STATUS_NATIVE = vaxc$errno;
4920 /* According to die_exit.t tests, if the child_exit code is */
4921 /* also zero, then we need to exit with a code of 255 */
4922 if ((errno != 0) && (errno < 256))
4923 STATUS_UNIX_EXIT_SET(errno);
4924 else if (STATUS_UNIX < 255) {
4925 STATUS_UNIX_EXIT_SET(255);
4930 /* The exit code could have been set by $? or vmsish which
4931 * means that it may not have fatal set. So convert
4932 * success/warning codes to fatal with out changing
4933 * the POSIX status code. The severity makes VMS native
4934 * status handling work, while UNIX mode programs use the
4935 * the POSIX exit codes.
4937 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4938 STATUS_NATIVE &= STS$M_COND_ID;
4939 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4943 /* Traditionally Perl on VMS always expects a Fatal Error. */
4944 if (vaxc$errno & 1) {
4946 /* So force success status to failure */
4947 if (STATUS_NATIVE & 1)
4952 STATUS_UNIX = EINTR; /* In case something cares */
4957 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4959 /* Encode the severity code */
4960 severity = STATUS_NATIVE & STS$M_SEVERITY;
4961 STATUS_UNIX = (severity ? severity : 1) << 8;
4963 /* Perl expects this to be a fatal error */
4964 if (severity != STS$K_SEVERE)
4973 STATUS_UNIX_SET(errno);
4975 exitstatus = STATUS_UNIX >> 8;
4976 if (exitstatus & 255)
4977 STATUS_UNIX_SET(exitstatus);
4979 STATUS_UNIX_SET(255);
4982 if (PL_exit_flags & PERL_EXIT_ABORT) {
4985 if (PL_exit_flags & PERL_EXIT_WARN) {
4986 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4987 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
4988 PL_exit_flags &= ~PERL_EXIT_ABORT;
4994 S_my_exit_jump(pTHX)
4997 SvREFCNT_dec(PL_e_script);
5001 POPSTACK_TO(PL_mainstack);
5009 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5011 const char * const p = SvPVX_const(PL_e_script);
5012 const char *nl = strchr(p, '\n');
5014 PERL_UNUSED_ARG(idx);
5015 PERL_UNUSED_ARG(maxlen);
5017 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5019 filter_del(read_e_script);
5022 sv_catpvn(buf_sv, p, nl-p);
5023 sv_chop(PL_e_script, nl);
5029 * c-indentation-style: bsd
5031 * indent-tabs-mode: nil
5034 * ex: set ts=8 sts=4 sw=4 et: