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 { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2074 0, SVfARG(*inc0), 0,
2075 0, SVfARG(*inc0), 0));
2078 /* SITELIB_EXP is a function call on Win32. */
2079 const char *const raw_sitelib = SITELIB_EXP;
2081 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2082 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2083 INCPUSH_CAN_RELOCATE);
2084 const char *const sitelib = SvPVX(sitelib_sv);
2085 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2087 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2088 0, SVfARG(sitelib), 0,
2089 0, SVfARG(sitelib), 0));
2090 assert (SvREFCNT(sitelib_sv) == 1);
2091 SvREFCNT_dec(sitelib_sv);
2098 scriptname = argv[0];
2101 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2103 else if (scriptname == NULL) {
2105 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2111 assert (!TAINT_get);
2115 bool suidscript = FALSE;
2117 rsfp = open_script(scriptname, dosearch, &suidscript);
2119 rsfp = PerlIO_stdin();
2120 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2123 validate_suid(rsfp);
2126 # if defined(SIGCHLD) || defined(SIGCLD)
2129 # define SIGCHLD SIGCLD
2131 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2132 if (sigstate == (Sighandler_t) SIG_IGN) {
2133 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2134 "Can't ignore signal CHLD, forcing to default");
2135 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2143 /* This will croak if suidscript is true, as -x cannot be used with
2145 forbid_setid('x', suidscript);
2146 /* Hence you can't get here if suidscript is true */
2148 linestr_sv = newSV_type(SVt_PV);
2149 lex_start_flags |= LEX_START_COPIED;
2150 find_beginning(linestr_sv, rsfp);
2151 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2152 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2156 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2157 CvUNIQUE_on(PL_compcv);
2159 CvPADLIST(PL_compcv) = pad_new(0);
2161 PL_isarev = newHV();
2164 boot_core_UNIVERSAL();
2166 newXS("Internals::V", S_Internals_V, __FILE__);
2169 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2171 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2177 # ifdef HAS_SOCKS5_INIT
2178 socks5_init(argv[0]);
2184 init_predump_symbols();
2185 /* init_postdump_symbols not currently designed to be called */
2186 /* more than once (ENV isn't cleared first, for example) */
2187 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2189 init_postdump_symbols(argc,argv,env);
2191 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2192 * or explicitly in some platforms.
2193 * locale.c:Perl_init_i18nl10n() if the environment
2194 * look like the user wants to use UTF-8. */
2195 #if defined(__SYMBIAN32__)
2196 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2198 # ifndef PERL_IS_MINIPERL
2200 /* Requires init_predump_symbols(). */
2201 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2206 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2207 * and the default open disciplines. */
2208 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2209 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2211 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2212 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2213 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2215 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2216 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2217 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2219 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2220 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2221 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2223 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2224 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2227 sv_setpvs(sv, ":utf8\0:utf8");
2229 sv_setpvs(sv, ":utf8\0");
2232 sv_setpvs(sv, "\0:utf8");
2241 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2242 if (strEQ(s, "unsafe"))
2243 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2244 else if (strEQ(s, "safe"))
2245 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2247 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2252 lex_start(linestr_sv, rsfp, lex_start_flags);
2253 SvREFCNT_dec(linestr_sv);
2255 PL_subname = newSVpvs("main");
2257 if (add_read_e_script)
2258 filter_add(read_e_script, NULL);
2260 /* now parse the script */
2262 SETERRNO(0,SS_NORMAL);
2263 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2265 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2267 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2271 CopLINE_set(PL_curcop, 0);
2272 SET_CURSTASH(PL_defstash);
2274 SvREFCNT_dec(PL_e_script);
2282 SAVECOPFILE(PL_curcop);
2283 SAVECOPLINE(PL_curcop);
2284 gv_check(PL_defstash);
2293 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2294 dump_mstats("after compilation:");
2299 PL_restartjmpenv = NULL;
2305 =for apidoc perl_run
2307 Tells a Perl interpreter to run. See L<perlembed>.
2319 PERL_ARGS_ASSERT_PERL_RUN;
2320 #ifndef MULTIPLICITY
2321 PERL_UNUSED_ARG(my_perl);
2324 oldscope = PL_scopestack_ix;
2332 cxstack_ix = -1; /* start context stack again */
2334 case 0: /* normal completion */
2338 case 2: /* my_exit() */
2339 while (PL_scopestack_ix > oldscope)
2342 SET_CURSTASH(PL_defstash);
2343 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2344 PL_endav && !PL_minus_c) {
2345 PERL_SET_PHASE(PERL_PHASE_END);
2346 call_list(oldscope, PL_endav);
2349 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2350 dump_mstats("after execution: ");
2356 POPSTACK_TO(PL_mainstack);
2359 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2370 S_run_body(pTHX_ I32 oldscope)
2372 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2373 PL_sawampersand ? "Enabling" : "Omitting",
2374 (unsigned int)(PL_sawampersand)));
2376 if (!PL_restartop) {
2378 if (DEBUG_x_TEST || DEBUG_B_TEST)
2379 dump_all_perl(!DEBUG_B_TEST);
2381 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2385 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2388 if (PERLDB_SINGLE && PL_DBsingle)
2389 sv_setiv(PL_DBsingle, 1);
2391 PERL_SET_PHASE(PERL_PHASE_INIT);
2392 call_list(oldscope, PL_initav);
2394 #ifdef PERL_DEBUG_READONLY_OPS
2395 if (PL_main_root && PL_main_root->op_slabbed)
2396 Slab_to_ro(OpSLAB(PL_main_root));
2402 PERL_SET_PHASE(PERL_PHASE_RUN);
2405 PL_restartjmpenv = NULL;
2406 PL_op = PL_restartop;
2410 else if (PL_main_start) {
2411 CvDEPTH(PL_main_cv) = 1;
2412 PL_op = PL_main_start;
2416 assert(0); /* NOTREACHED */
2420 =head1 SV Manipulation Functions
2422 =for apidoc p||get_sv
2424 Returns the SV of the specified Perl scalar. C<flags> are passed to
2425 C<gv_fetchpv>. If C<GV_ADD> is set and the
2426 Perl variable does not exist then it will be created. If C<flags> is zero
2427 and the variable does not exist then NULL is returned.
2433 Perl_get_sv(pTHX_ const char *name, I32 flags)
2437 PERL_ARGS_ASSERT_GET_SV;
2439 gv = gv_fetchpv(name, flags, SVt_PV);
2446 =head1 Array Manipulation Functions
2448 =for apidoc p||get_av
2450 Returns the AV of the specified Perl global or package array with the given
2451 name (so it won't work on lexical variables). C<flags> are passed
2452 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2453 Perl variable does not exist then it will be created. If C<flags> is zero
2454 and the variable does not exist then NULL is returned.
2456 Perl equivalent: C<@{"$name"}>.
2462 Perl_get_av(pTHX_ const char *name, I32 flags)
2464 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2466 PERL_ARGS_ASSERT_GET_AV;
2476 =head1 Hash Manipulation Functions
2478 =for apidoc p||get_hv
2480 Returns the HV of the specified Perl hash. C<flags> are passed to
2481 C<gv_fetchpv>. If C<GV_ADD> is set and the
2482 Perl variable does not exist then it will be created. If C<flags> is zero
2483 and the variable does not exist then NULL is returned.
2489 Perl_get_hv(pTHX_ const char *name, I32 flags)
2491 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2493 PERL_ARGS_ASSERT_GET_HV;
2503 =head1 CV Manipulation Functions
2505 =for apidoc p||get_cvn_flags
2507 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2508 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2509 exist then it will be declared (which has the same effect as saying
2510 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2511 then NULL is returned.
2513 =for apidoc p||get_cv
2515 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2521 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2523 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2525 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2527 /* XXX this is probably not what they think they're getting.
2528 * It has the same effect as "sub name;", i.e. just a forward
2530 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2531 return newSTUB(gv,0);
2538 /* Nothing in core calls this now, but we can't replace it with a macro and
2539 move it to mathoms.c as a macro would evaluate name twice. */
2541 Perl_get_cv(pTHX_ const char *name, I32 flags)
2543 PERL_ARGS_ASSERT_GET_CV;
2545 return get_cvn_flags(name, strlen(name), flags);
2548 /* Be sure to refetch the stack pointer after calling these routines. */
2552 =head1 Callback Functions
2554 =for apidoc p||call_argv
2556 Performs a callback to the specified named and package-scoped Perl subroutine
2557 with C<argv> (a NULL-terminated array of strings) as arguments. See
2560 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2566 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2568 /* See G_* flags in cop.h */
2569 /* null terminated arg list */
2573 PERL_ARGS_ASSERT_CALL_ARGV;
2578 mXPUSHs(newSVpv(*argv,0));
2583 return call_pv(sub_name, flags);
2587 =for apidoc p||call_pv
2589 Performs a callback to the specified Perl sub. See L<perlcall>.
2595 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2596 /* name of the subroutine */
2597 /* See G_* flags in cop.h */
2599 PERL_ARGS_ASSERT_CALL_PV;
2601 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2605 =for apidoc p||call_method
2607 Performs a callback to the specified Perl method. The blessed object must
2608 be on the stack. See L<perlcall>.
2614 Perl_call_method(pTHX_ const char *methname, I32 flags)
2615 /* name of the subroutine */
2616 /* See G_* flags in cop.h */
2620 PERL_ARGS_ASSERT_CALL_METHOD;
2622 len = strlen(methname);
2623 sv = flags & G_METHOD_NAMED
2624 ? sv_2mortal(newSVpvn_share(methname, len,0))
2625 : newSVpvn_flags(methname, len, SVs_TEMP);
2627 return call_sv(sv, flags | G_METHOD);
2630 /* May be called with any of a CV, a GV, or an SV containing the name. */
2632 =for apidoc p||call_sv
2634 Performs a callback to the Perl sub whose name is in the SV. See
2641 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2642 /* See G_* flags in cop.h */
2645 LOGOP myop; /* fake syntax tree node */
2651 bool oldcatch = CATCH_GET;
2653 OP* const oldop = PL_op;
2656 PERL_ARGS_ASSERT_CALL_SV;
2658 if (flags & G_DISCARD) {
2662 if (!(flags & G_WANT)) {
2663 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2668 Zero(&myop, 1, LOGOP);
2669 if (!(flags & G_NOARGS))
2670 myop.op_flags |= OPf_STACKED;
2671 myop.op_flags |= OP_GIMME_REVERSE(flags);
2675 EXTEND(PL_stack_sp, 1);
2676 if (!(flags & G_METHOD_NAMED))
2677 *++PL_stack_sp = sv;
2679 oldscope = PL_scopestack_ix;
2681 if (PERLDB_SUB && PL_curstash != PL_debstash
2682 /* Handle first BEGIN of -d. */
2683 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2684 /* Try harder, since this may have been a sighandler, thus
2685 * curstash may be meaningless. */
2686 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2687 && !(flags & G_NODEBUG))
2688 myop.op_private |= OPpENTERSUB_DB;
2690 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2691 if ( flags & G_METHOD_NAMED ) {
2692 Zero(&method_svop, 1, SVOP);
2693 method_svop.op_next = (OP*)&myop;
2694 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2695 method_svop.op_type = OP_METHOD_NAMED;
2696 method_svop.op_sv = sv;
2697 PL_op = (OP*)&method_svop;
2699 Zero(&method_unop, 1, UNOP);
2700 method_unop.op_next = (OP*)&myop;
2701 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2702 method_unop.op_type = OP_METHOD;
2703 PL_op = (OP*)&method_unop;
2705 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2706 myop.op_type = OP_ENTERSUB;
2710 if (!(flags & G_EVAL)) {
2712 CALL_BODY_SUB((OP*)&myop);
2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
2714 CATCH_SET(oldcatch);
2717 myop.op_other = (OP*)&myop;
2719 create_eval_scope(flags|G_FAKINGEVAL);
2727 CALL_BODY_SUB((OP*)&myop);
2728 retval = PL_stack_sp - (PL_stack_base + oldmark);
2729 if (!(flags & G_KEEPERR)) {
2737 /* my_exit() was called */
2738 SET_CURSTASH(PL_defstash);
2742 assert(0); /* NOTREACHED */
2745 PL_restartjmpenv = NULL;
2746 PL_op = PL_restartop;
2750 PL_stack_sp = PL_stack_base + oldmark;
2751 if ((flags & G_WANT) == G_ARRAY)
2755 *++PL_stack_sp = &PL_sv_undef;
2760 if (PL_scopestack_ix > oldscope)
2761 delete_eval_scope();
2765 if (flags & G_DISCARD) {
2766 PL_stack_sp = PL_stack_base + oldmark;
2775 /* Eval a string. The G_EVAL flag is always assumed. */
2778 =for apidoc p||eval_sv
2780 Tells Perl to C<eval> the string in the SV. It supports the same flags
2781 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2787 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2789 /* See G_* flags in cop.h */
2793 UNOP myop; /* fake syntax tree node */
2794 VOL I32 oldmark = SP - PL_stack_base;
2797 OP* const oldop = PL_op;
2800 PERL_ARGS_ASSERT_EVAL_SV;
2802 if (flags & G_DISCARD) {
2809 Zero(&myop, 1, UNOP);
2810 EXTEND(PL_stack_sp, 1);
2811 *++PL_stack_sp = sv;
2813 if (!(flags & G_NOARGS))
2814 myop.op_flags = OPf_STACKED;
2815 myop.op_type = OP_ENTEREVAL;
2816 myop.op_flags |= OP_GIMME_REVERSE(flags);
2817 if (flags & G_KEEPERR)
2818 myop.op_flags |= OPf_SPECIAL;
2820 if (flags & G_RE_REPARSING)
2821 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2823 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2824 * before a PUSHEVAL, which corrupts the stack after a croak */
2825 TAINT_PROPER("eval_sv()");
2831 if (PL_op == (OP*)(&myop)) {
2832 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2834 goto fail; /* failed in compilation */
2837 retval = PL_stack_sp - (PL_stack_base + oldmark);
2838 if (!(flags & G_KEEPERR)) {
2846 /* my_exit() was called */
2847 SET_CURSTASH(PL_defstash);
2851 assert(0); /* NOTREACHED */
2854 PL_restartjmpenv = NULL;
2855 PL_op = PL_restartop;
2860 PL_stack_sp = PL_stack_base + oldmark;
2861 if ((flags & G_WANT) == G_ARRAY)
2865 *++PL_stack_sp = &PL_sv_undef;
2871 if (flags & G_DISCARD) {
2872 PL_stack_sp = PL_stack_base + oldmark;
2882 =for apidoc p||eval_pv
2884 Tells Perl to C<eval> the given string and return an SV* result.
2890 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2892 SV* sv = newSVpv(p, 0);
2894 PERL_ARGS_ASSERT_EVAL_PV;
2896 eval_sv(sv, G_SCALAR);
2905 /* just check empty string or undef? */
2906 if (croak_on_error) {
2907 SV * const errsv = ERRSV;
2908 if(SvTRUE_NN(errsv))
2909 /* replace with croak_sv? */
2910 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2916 /* Require a module. */
2919 =head1 Embedding Functions
2921 =for apidoc p||require_pv
2923 Tells Perl to C<require> the file named by the string argument. It is
2924 analogous to the Perl code C<eval "require '$file'">. It's even
2925 implemented that way; consider using load_module instead.
2930 Perl_require_pv(pTHX_ const char *pv)
2935 PERL_ARGS_ASSERT_REQUIRE_PV;
2937 PUSHSTACKi(PERLSI_REQUIRE);
2938 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2939 eval_sv(sv_2mortal(sv), G_DISCARD);
2944 S_usage(pTHX) /* XXX move this out into a module ? */
2946 /* This message really ought to be max 23 lines.
2947 * Removed -h because the user already knows that option. Others? */
2949 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2950 minimum of 509 character string literals. */
2951 static const char * const usage_msg[] = {
2952 " -0[octal] specify record separator (\\0, if no argument)\n"
2953 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2954 " -C[number/list] enables the listed Unicode features\n"
2955 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2956 " -d[:debugger] run program under debugger\n"
2957 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2958 " -e program one line of program (several -e's allowed, omit programfile)\n"
2959 " -E program like -e, but enables all optional features\n"
2960 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2961 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2962 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2963 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2964 " -l[octal] enable line ending processing, specifies line terminator\n"
2965 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2966 " -n assume \"while (<>) { ... }\" loop around program\n"
2967 " -p assume loop like -n but print line also, like sed\n"
2968 " -s enable rudimentary parsing for switches after programfile\n"
2969 " -S look for programfile using PATH environment variable\n",
2970 " -t enable tainting warnings\n"
2971 " -T enable tainting checks\n"
2972 " -u dump core after parsing program\n"
2973 " -U allow unsafe operations\n"
2974 " -v print version, patchlevel and license\n"
2975 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2976 " -w enable many useful warnings\n"
2977 " -W enable all warnings\n"
2978 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2979 " -X disable all warnings\n"
2981 "Run 'perldoc perl' for more help with Perl.\n\n",
2984 const char * const *p = usage_msg;
2985 PerlIO *out = PerlIO_stdout();
2988 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2991 PerlIO_puts(out, *p++);
2995 /* convert a string of -D options (or digits) into an int.
2996 * sets *s to point to the char after the options */
3000 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3002 static const char * const usage_msgd[] = {
3003 " Debugging flag values: (see also -d)\n"
3004 " p Tokenizing and parsing (with v, displays parse stack)\n"
3005 " s Stack snapshots (with v, displays all stacks)\n"
3006 " l Context (loop) stack processing\n"
3007 " t Trace execution\n"
3008 " o Method and overloading resolution\n",
3009 " c String/numeric conversions\n"
3010 " P Print profiling info, source file input state\n"
3011 " m Memory and SV allocation\n"
3012 " f Format processing\n"
3013 " r Regular expression parsing and execution\n"
3014 " x Syntax tree dump\n",
3015 " u Tainting checks\n"
3016 " H Hash dump -- usurps values()\n"
3017 " X Scratchpad allocation\n"
3019 " S Op slab allocation\n"
3021 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3022 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3023 " v Verbose: use in conjunction with other flags\n"
3024 " C Copy On Write\n"
3025 " A Consistency checks on internal structures\n"
3026 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3027 " M trace smart match resolution\n"
3028 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3029 " L trace some locale setting information--for Perl core development\n",
3034 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3037 /* if adding extra options, remember to update DEBUG_MASK */
3038 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3040 for (; isWORDCHAR(**s); (*s)++) {
3041 const char * const d = strchr(debopts,**s);
3043 i |= 1 << (d - debopts);
3044 else if (ckWARN_d(WARN_DEBUGGING))
3045 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3046 "invalid option -D%c, use -D'' to see choices\n", **s);
3049 else if (isDIGIT(**s)) {
3051 i = grok_atou(*s, &e);
3054 for (; isWORDCHAR(**s); (*s)++) ;
3056 else if (givehelp) {
3057 const char *const *p = usage_msgd;
3058 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3061 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3062 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3063 "-Dp not implemented on this platform\n");
3069 /* This routine handles any switches that can be given during run */
3072 Perl_moreswitches(pTHX_ const char *s)
3076 const char option = *s; /* used to remember option in -m/-M code */
3078 PERL_ARGS_ASSERT_MORESWITCHES;
3086 SvREFCNT_dec(PL_rs);
3087 if (s[1] == 'x' && s[2]) {
3088 const char *e = s+=2;
3094 flags = PERL_SCAN_SILENT_ILLDIGIT;
3095 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3096 if (s + numlen < e) {
3097 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3101 PL_rs = newSVpvs("");
3102 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3103 tmps = (U8*)SvPVX(PL_rs);
3104 uvchr_to_utf8(tmps, rschar);
3105 SvCUR_set(PL_rs, UNISKIP(rschar));
3110 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3111 if (rschar & ~((U8)~0))
3112 PL_rs = &PL_sv_undef;
3113 else if (!rschar && numlen >= 2)
3114 PL_rs = newSVpvs("");
3116 char ch = (char)rschar;
3117 PL_rs = newSVpvn(&ch, 1);
3120 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3125 PL_unicode = parse_unicode_opts( (const char **)&s );
3126 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3134 while (*s && !isSPACE(*s)) ++s;
3135 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3147 forbid_setid('d', FALSE);
3150 /* -dt indicates to the debugger that threads will be used */
3151 if (*s == 't' && !isWORDCHAR(s[1])) {
3153 my_setenv("PERL5DB_THREADED", "1");
3156 /* The following permits -d:Mod to accepts arguments following an =
3157 in the fashion that -MSome::Mod does. */
3158 if (*s == ':' || *s == '=') {
3165 sv = newSVpvs("no Devel::");
3167 sv = newSVpvs("use Devel::");
3171 end = s + strlen(s);
3173 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3174 while(isWORDCHAR(*s) || *s==':') ++s;
3176 sv_catpvn(sv, start, end - start);
3178 sv_catpvn(sv, start, s-start);
3179 /* Don't use NUL as q// delimiter here, this string goes in the
3181 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3184 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3188 PL_perldb = PERLDB_ALL;
3195 forbid_setid('D', FALSE);
3197 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3198 #else /* !DEBUGGING */
3199 if (ckWARN_d(WARN_DEBUGGING))
3200 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3201 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3202 for (s++; isWORDCHAR(*s); s++) ;
3209 Safefree(PL_inplace);
3210 #if defined(__CYGWIN__) /* do backup extension automagically */
3211 if (*(s+1) == '\0') {
3212 PL_inplace = savepvs(".bak");
3215 #endif /* __CYGWIN__ */
3217 const char * const start = ++s;
3218 while (*s && !isSPACE(*s))
3221 PL_inplace = savepvn(start, s - start);
3225 if (*s == '-') /* Additional switches on #! line. */
3229 case 'I': /* -I handled both here and in parse_body() */
3230 forbid_setid('I', FALSE);
3232 while (*s && isSPACE(*s))
3237 /* ignore trailing spaces (possibly followed by other switches) */
3239 for (e = p; *e && !isSPACE(*e); e++) ;
3243 } while (*p && *p != '-');
3245 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3251 Perl_croak(aTHX_ "No directory specified for -I");
3257 SvREFCNT_dec(PL_ors_sv);
3263 PL_ors_sv = newSVpvs("\n");
3264 numlen = 3 + (*s == '0');
3265 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3269 if (RsPARA(PL_rs)) {
3270 PL_ors_sv = newSVpvs("\n\n");
3273 PL_ors_sv = newSVsv(PL_rs);
3278 forbid_setid('M', FALSE); /* XXX ? */
3281 forbid_setid('m', FALSE); /* XXX ? */
3286 const char *use = "use ";
3288 /* -M-foo == 'no foo' */
3289 /* Leading space on " no " is deliberate, to make both
3290 possibilities the same length. */
3291 if (*s == '-') { use = " no "; ++s; }
3292 sv = newSVpvn(use,4);
3294 /* We allow -M'Module qw(Foo Bar)' */
3295 while(isWORDCHAR(*s) || *s==':') {
3304 Perl_croak(aTHX_ "Module name required with -%c option",
3307 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3308 "contains single ':'",
3309 (int)(s - start), start, option);
3310 end = s + strlen(s);
3312 sv_catpvn(sv, start, end - start);
3313 if (option == 'm') {
3315 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3316 sv_catpvs( sv, " ()");
3319 sv_catpvn(sv, start, s-start);
3320 /* Use NUL as q''-delimiter. */
3321 sv_catpvs(sv, " split(/,/,q\0");
3323 sv_catpvn(sv, s, end - s);
3324 sv_catpvs(sv, "\0)");
3327 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3330 Perl_croak(aTHX_ "Missing argument to -%c", option);
3341 forbid_setid('s', FALSE);
3342 PL_doswitches = TRUE;
3347 #if defined(SILENT_NO_TAINT_SUPPORT)
3348 /* silently ignore */
3349 #elif defined(NO_TAINT_SUPPORT)
3350 Perl_croak_nocontext("This perl was compiled without taint support. "
3351 "Cowardly refusing to run with -t or -T flags");
3359 PL_do_undump = TRUE;
3369 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3370 PL_dowarn |= G_WARN_ON;
3375 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3376 if (!specialWARN(PL_compiling.cop_warnings))
3377 PerlMemShared_free(PL_compiling.cop_warnings);
3378 PL_compiling.cop_warnings = pWARN_ALL ;
3382 PL_dowarn = G_WARN_ALL_OFF;
3383 if (!specialWARN(PL_compiling.cop_warnings))
3384 PerlMemShared_free(PL_compiling.cop_warnings);
3385 PL_compiling.cop_warnings = pWARN_NONE ;
3392 if (s[0] == '-') /* Additional switches on #! line. */
3397 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3403 #ifdef ALTERNATE_SHEBANG
3404 case 'S': /* OS/2 needs -S on "extproc" line. */
3407 case 'e': case 'f': case 'x': case 'E':
3408 #ifndef ALTERNATE_SHEBANG
3412 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3415 "Unrecognized switch: -%.1s (-h will show valid options)",s
3425 PerlIO * PIO_stdout;
3427 const char * const level_str = "v" PERL_VERSION_STRING;
3428 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3429 #ifdef PERL_PATCHNUM
3431 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3432 static const char num [] = PERL_PATCHNUM "*";
3434 static const char num [] = PERL_PATCHNUM;
3437 const STRLEN num_len = sizeof(num)-1;
3438 /* A very advanced compiler would fold away the strnEQ
3439 and this whole conditional, but most (all?) won't do it.
3440 SV level could also be replaced by with preprocessor
3443 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3444 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3445 of the interp so it might contain format characters
3447 level = newSVpvn(num, num_len);
3449 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3453 SV* level = newSVpvn(level_str, level_len);
3454 #endif /* #ifdef PERL_PATCHNUM */
3455 PIO_stdout = PerlIO_stdout();
3456 PerlIO_printf(PIO_stdout,
3457 "\nThis is perl " STRINGIFY(PERL_REVISION)
3458 ", version " STRINGIFY(PERL_VERSION)
3459 ", subversion " STRINGIFY(PERL_SUBVERSION)
3460 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3462 SvREFCNT_dec_NN(level);
3464 #if defined(LOCAL_PATCH_COUNT)
3465 if (LOCAL_PATCH_COUNT > 0)
3466 PerlIO_printf(PIO_stdout,
3467 "\n(with %d registered patch%s, "
3468 "see perl -V for more detail)",
3470 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3473 PerlIO_printf(PIO_stdout,
3474 "\n\nCopyright 1987-2014, Larry Wall\n");
3476 PerlIO_printf(PIO_stdout,
3477 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3480 PerlIO_printf(PIO_stdout,
3481 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3482 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3485 PerlIO_printf(PIO_stdout,
3486 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3487 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3490 PerlIO_printf(PIO_stdout,
3491 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3494 PerlIO_printf(PIO_stdout,
3495 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3498 PerlIO_printf(PIO_stdout,
3499 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3502 PerlIO_printf(PIO_stdout,
3503 "WINCE port by Rainer Keuchel, 2001-2002\n"
3504 "Built on " __DATE__ " " __TIME__ "\n\n");
3507 #ifdef __SYMBIAN32__
3508 PerlIO_printf(PIO_stdout,
3509 "Symbian port by Nokia, 2004-2005\n");
3511 #ifdef BINARY_BUILD_NOTICE
3512 BINARY_BUILD_NOTICE;
3514 PerlIO_printf(PIO_stdout,
3516 Perl may be copied only under the terms of either the Artistic License or the\n\
3517 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3518 Complete documentation for Perl, including FAQ lists, should be found on\n\
3519 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3520 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3524 /* compliments of Tom Christiansen */
3526 /* unexec() can be found in the Gnu emacs distribution */
3527 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3530 #include <lib$routines.h>
3534 Perl_my_unexec(pTHX)
3537 SV * prog = newSVpv(BIN_EXP, 0);
3538 SV * file = newSVpv(PL_origfilename, 0);
3542 sv_catpvs(prog, "/perl");
3543 sv_catpvs(file, ".perldump");
3545 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3546 /* unexec prints msg to stderr in case of failure */
3547 PerlProc_exit(status);
3549 PERL_UNUSED_CONTEXT;
3551 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3552 # elif defined(WIN32) || defined(__CYGWIN__)
3553 Perl_croak_nocontext("dump is not supported");
3555 ABORT(); /* for use with undump */
3560 /* initialize curinterp */
3565 # define PERLVAR(prefix,var,type)
3566 # define PERLVARA(prefix,var,n,type)
3567 # if defined(PERL_IMPLICIT_CONTEXT)
3568 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3569 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3571 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3572 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3574 # include "intrpvar.h"
3580 # define PERLVAR(prefix,var,type)
3581 # define PERLVARA(prefix,var,n,type)
3582 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3583 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3584 # include "intrpvar.h"
3594 S_init_main_stash(pTHX)
3598 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3599 /* We know that the string "main" will be in the global shared string
3600 table, so it's a small saving to use it rather than allocate another
3602 PL_curstname = newSVpvs_share("main");
3603 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3604 /* If we hadn't caused another reference to "main" to be in the shared
3605 string table above, then it would be worth reordering these two,
3606 because otherwise all we do is delete "main" from it as a consequence
3607 of the SvREFCNT_dec, only to add it again with hv_name_set */
3608 SvREFCNT_dec(GvHV(gv));
3609 hv_name_set(PL_defstash, "main", 4, 0);
3610 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3612 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3614 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3615 GvMULTI_on(PL_incgv);
3616 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3617 SvREFCNT_inc_simple_void(PL_hintgv);
3618 GvMULTI_on(PL_hintgv);
3619 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3620 SvREFCNT_inc_simple_void(PL_defgv);
3621 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3622 SvREFCNT_inc_simple_void(PL_errgv);
3623 GvMULTI_on(PL_errgv);
3624 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3625 SvREFCNT_inc_simple_void(PL_replgv);
3626 GvMULTI_on(PL_replgv);
3627 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3628 #ifdef PERL_DONT_CREATE_GVSV
3631 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3633 SET_CURSTASH(PL_defstash);
3634 CopSTASH_set(&PL_compiling, PL_defstash);
3635 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3636 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3638 /* We must init $/ before switches are processed. */
3639 sv_setpvs(get_sv("/", GV_ADD), "\n");
3643 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3646 PerlIO *rsfp = NULL;
3650 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3653 PL_origfilename = savepvs("-e");
3656 /* if find_script() returns, it returns a malloc()-ed value */
3657 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3659 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3660 const char *s = scriptname + 8;
3662 fdscript = grok_atou(s, &e);
3666 * Tell apart "normal" usage of fdscript, e.g.
3667 * with bash on FreeBSD:
3668 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3669 * from usage in suidperl.
3670 * Does any "normal" usage leave garbage after the number???
3671 * Is it a mistake to use a similar /dev/fd/ construct for
3676 * Be supersafe and do some sanity-checks.
3677 * Still, can we be sure we got the right thing?
3680 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3683 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3685 scriptname = savepv(s + 1);
3686 Safefree(PL_origfilename);
3687 PL_origfilename = (char *)scriptname;
3692 CopFILE_free(PL_curcop);
3693 CopFILE_set(PL_curcop, PL_origfilename);
3694 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3695 scriptname = (char *)"";
3696 if (fdscript >= 0) {
3697 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3699 else if (!*scriptname) {
3700 forbid_setid(0, *suidscript);
3704 #ifdef FAKE_BIT_BUCKET
3705 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3706 * is called) and still have the "-e" work. (Believe it or not,
3707 * a /dev/null is required for the "-e" to work because source
3708 * filter magic is used to implement it. ) This is *not* a general
3709 * replacement for a /dev/null. What we do here is create a temp
3710 * file (an empty file), open up that as the script, and then
3711 * immediately close and unlink it. Close enough for jazz. */
3712 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3713 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3714 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3715 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3716 FAKE_BIT_BUCKET_TEMPLATE
3718 const char * const err = "Failed to create a fake bit bucket";
3719 if (strEQ(scriptname, BIT_BUCKET)) {
3720 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3721 int old_umask = umask(0600);
3722 int tmpfd = mkstemp(tmpname);
3725 scriptname = tmpname;
3728 Perl_croak(aTHX_ err);
3731 scriptname = mktemp(tmpname);
3733 Perl_croak(aTHX_ err);
3738 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3739 #ifdef FAKE_BIT_BUCKET
3740 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3741 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3742 && strlen(scriptname) == sizeof(tmpname) - 1) {
3745 scriptname = BIT_BUCKET;
3749 /* PSz 16 Sep 03 Keep neat error message */
3751 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3753 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3754 CopFILE(PL_curcop), Strerror(errno));
3756 fd = PerlIO_fileno(rsfp);
3757 #if defined(HAS_FCNTL) && defined(F_SETFD)
3759 /* ensure close-on-exec */
3760 if (fcntl(fd, F_SETFD, 1) < 0) {
3761 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3762 CopFILE(PL_curcop), Strerror(errno));
3768 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3769 && S_ISDIR(tmpstatbuf.st_mode)))
3770 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3778 * I_SYSSTATVFS HAS_FSTATVFS
3780 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3781 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3782 * here so that metaconfig picks them up. */
3785 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3786 /* Don't even need this function. */
3789 S_validate_suid(pTHX_ PerlIO *rsfp)
3791 const Uid_t my_uid = PerlProc_getuid();
3792 const Uid_t my_euid = PerlProc_geteuid();
3793 const Gid_t my_gid = PerlProc_getgid();
3794 const Gid_t my_egid = PerlProc_getegid();
3796 PERL_ARGS_ASSERT_VALIDATE_SUID;
3798 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3800 int fd = PerlIO_fileno(rsfp);
3802 Perl_croak(aTHX_ "Illegal suidscript");
3804 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3805 Perl_croak(aTHX_ "Illegal suidscript");
3808 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3810 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3813 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3814 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3815 /* not set-id, must be wrapped */
3818 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3821 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3826 PERL_ARGS_ASSERT_FIND_BEGINNING;
3828 /* skip forward in input to the real script? */
3831 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3832 Perl_croak(aTHX_ "No Perl script found in input\n");
3834 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3835 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3836 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3838 while (*s == ' ' || *s == '\t') s++;
3840 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3841 || s2[-1] == '_') s2--;
3842 if (strnEQ(s2-4,"perl",4))
3843 while ((s = moreswitches(s)))
3852 /* no need to do anything here any more if we don't
3854 #ifndef NO_TAINT_SUPPORT
3855 const Uid_t my_uid = PerlProc_getuid();
3856 const Uid_t my_euid = PerlProc_geteuid();
3857 const Gid_t my_gid = PerlProc_getgid();
3858 const Gid_t my_egid = PerlProc_getegid();
3860 PERL_UNUSED_CONTEXT;
3862 /* Should not happen: */
3863 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3864 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3868 * Should go by suidscript, not uid!=euid: why disallow
3869 * system("ls") in scripts run from setuid things?
3870 * Or, is this run before we check arguments and set suidscript?
3871 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3872 * (We never have suidscript, can we be sure to have fdscript?)
3873 * Or must then go by UID checks? See comments in forbid_setid also.
3877 /* This is used very early in the lifetime of the program,
3878 * before even the options are parsed, so PL_tainting has
3879 * not been initialized properly. */
3881 Perl_doing_taint(int argc, char *argv[], char *envp[])
3883 #ifndef PERL_IMPLICIT_SYS
3884 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3885 * before we have an interpreter-- and the whole point of this
3886 * function is to be called at such an early stage. If you are on
3887 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3888 * "tainted because running with altered effective ids', you'll
3889 * have to add your own checks somewhere in here. The two most
3890 * known samples of 'implicitness' are Win32 and NetWare, neither
3891 * of which has much of concept of 'uids'. */
3892 Uid_t uid = PerlProc_getuid();
3893 Uid_t euid = PerlProc_geteuid();
3894 Gid_t gid = PerlProc_getgid();
3895 Gid_t egid = PerlProc_getegid();
3902 if (uid && (euid != uid || egid != gid))
3904 #endif /* !PERL_IMPLICIT_SYS */
3905 /* This is a really primitive check; environment gets ignored only
3906 * if -T are the first chars together; otherwise one gets
3907 * "Too late" message. */
3908 if ( argc > 1 && argv[1][0] == '-'
3909 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3914 /* Passing the flag as a single char rather than a string is a slight space
3915 optimisation. The only message that isn't /^-.$/ is
3916 "program input from stdin", which is substituted in place of '\0', which
3917 could never be a command line flag. */
3919 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3921 char string[3] = "-x";
3922 const char *message = "program input from stdin";
3924 PERL_UNUSED_CONTEXT;
3930 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3931 if (PerlProc_getuid() != PerlProc_geteuid())
3932 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3933 if (PerlProc_getgid() != PerlProc_getegid())
3934 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3935 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3937 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3941 Perl_init_dbargs(pTHX)
3943 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3948 /* Someone has already created it.
3949 It might have entries, and if we just turn off AvREAL(), they will
3950 "leak" until global destruction. */
3952 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3953 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3955 AvREIFY_only(PL_dbargs);
3959 Perl_init_debugger(pTHX)
3961 HV * const ostash = PL_curstash;
3963 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3965 Perl_init_dbargs(aTHX);
3966 PL_DBgv = MUTABLE_GV(
3967 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3969 PL_DBline = MUTABLE_GV(
3970 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3972 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3973 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3975 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3976 if (!SvIOK(PL_DBsingle))
3977 sv_setiv(PL_DBsingle, 0);
3978 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3979 if (!SvIOK(PL_DBtrace))
3980 sv_setiv(PL_DBtrace, 0);
3981 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3982 if (!SvIOK(PL_DBsignal))
3983 sv_setiv(PL_DBsignal, 0);
3984 SvREFCNT_dec(PL_curstash);
3985 PL_curstash = ostash;
3988 #ifndef STRESS_REALLOC
3989 #define REASONABLE(size) (size)
3990 #define REASONABLE_but_at_least(size,min) (size)
3992 #define REASONABLE(size) (1) /* unreasonable */
3993 #define REASONABLE_but_at_least(size,min) (min)
3997 Perl_init_stacks(pTHX)
3999 /* start with 128-item stack and 8K cxstack */
4000 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4001 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4002 PL_curstackinfo->si_type = PERLSI_MAIN;
4003 PL_curstack = PL_curstackinfo->si_stack;
4004 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4006 PL_stack_base = AvARRAY(PL_curstack);
4007 PL_stack_sp = PL_stack_base;
4008 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4010 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4013 PL_tmps_max = REASONABLE(128);
4015 Newx(PL_markstack,REASONABLE(32),I32);
4016 PL_markstack_ptr = PL_markstack;
4017 PL_markstack_max = PL_markstack + REASONABLE(32);
4021 Newx(PL_scopestack,REASONABLE(32),I32);
4023 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4025 PL_scopestack_ix = 0;
4026 PL_scopestack_max = REASONABLE(32);
4028 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4029 PL_savestack_ix = 0;
4030 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4038 while (PL_curstackinfo->si_next)
4039 PL_curstackinfo = PL_curstackinfo->si_next;
4040 while (PL_curstackinfo) {
4041 PERL_SI *p = PL_curstackinfo->si_prev;
4042 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4043 Safefree(PL_curstackinfo->si_cxstack);
4044 Safefree(PL_curstackinfo);
4045 PL_curstackinfo = p;
4047 Safefree(PL_tmps_stack);
4048 Safefree(PL_markstack);
4049 Safefree(PL_scopestack);
4051 Safefree(PL_scopestack_name);
4053 Safefree(PL_savestack);
4057 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4059 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4060 AV *const isa = GvAVn(gv);
4063 PERL_ARGS_ASSERT_POPULATE_ISA;
4065 if(AvFILLp(isa) != -1)
4068 /* NOTE: No support for tied ISA */
4070 va_start(args, len);
4072 const char *const parent = va_arg(args, const char*);
4077 parent_len = va_arg(args, size_t);
4079 /* Arguments are supplied with a trailing :: */
4080 assert(parent_len > 2);
4081 assert(parent[parent_len - 1] == ':');
4082 assert(parent[parent_len - 2] == ':');
4083 av_push(isa, newSVpvn(parent, parent_len - 2));
4084 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4091 S_init_predump_symbols(pTHX)
4096 sv_setpvs(get_sv("\"", GV_ADD), " ");
4097 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4100 /* Historically, PVIOs were blessed into IO::Handle, unless
4101 FileHandle was loaded, in which case they were blessed into
4102 that. Action at a distance.
4103 However, if we simply bless into IO::Handle, we break code
4104 that assumes that PVIOs will have (among others) a seek
4105 method. IO::File inherits from IO::Handle and IO::Seekable,
4106 and provides the needed methods. But if we simply bless into
4107 it, then we break code that assumed that by loading
4108 IO::Handle, *it* would work.
4109 So a compromise is to set up the correct @IO::File::ISA,
4110 so that code that does C<use IO::Handle>; will still work.
4113 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4114 STR_WITH_LEN("IO::Handle::"),
4115 STR_WITH_LEN("IO::Seekable::"),
4116 STR_WITH_LEN("Exporter::"),
4119 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4120 GvMULTI_on(PL_stdingv);
4121 io = GvIOp(PL_stdingv);
4122 IoTYPE(io) = IoTYPE_RDONLY;
4123 IoIFP(io) = PerlIO_stdin();
4124 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4126 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4128 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4131 IoTYPE(io) = IoTYPE_WRONLY;
4132 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4134 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4136 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4138 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4139 GvMULTI_on(PL_stderrgv);
4140 io = GvIOp(PL_stderrgv);
4141 IoTYPE(io) = IoTYPE_WRONLY;
4142 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4143 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4145 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4147 PL_statname = newSVpvs(""); /* last filename we did stat on */
4151 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4153 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4155 argc--,argv++; /* skip name of script */
4156 if (PL_doswitches) {
4157 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4161 if (argv[0][1] == '-' && !argv[0][2]) {
4165 if ((s = strchr(argv[0], '='))) {
4166 const char *const start_name = argv[0] + 1;
4167 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4168 TRUE, SVt_PV)), s + 1);
4171 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4174 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4175 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4176 GvMULTI_on(PL_argvgv);
4177 av_clear(GvAVn(PL_argvgv));
4178 for (; argc > 0; argc--,argv++) {
4179 SV * const sv = newSVpv(argv[0],0);
4180 av_push(GvAV(PL_argvgv),sv);
4181 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4182 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4185 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4186 (void)sv_utf8_decode(sv);
4190 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4191 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4192 "-i used with no filenames on the command line, "
4193 "reading from STDIN");
4197 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4204 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4206 PL_toptarget = newSV_type(SVt_PVIV);
4207 sv_setpvs(PL_toptarget, "");
4208 PL_bodytarget = newSV_type(SVt_PVIV);
4209 sv_setpvs(PL_bodytarget, "");
4210 PL_formtarget = PL_bodytarget;
4214 init_argv_symbols(argc,argv);
4216 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4217 sv_setpv(GvSV(tmpgv),PL_origfilename);
4219 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4221 bool env_is_not_environ;
4222 SvREFCNT_inc_simple_void_NN(PL_envgv);
4223 GvMULTI_on(PL_envgv);
4224 hv = GvHVn(PL_envgv);
4225 hv_magic(hv, NULL, PERL_MAGIC_env);
4227 #ifdef USE_ENVIRON_ARRAY
4228 /* Note that if the supplied env parameter is actually a copy
4229 of the global environ then it may now point to free'd memory
4230 if the environment has been modified since. To avoid this
4231 problem we treat env==NULL as meaning 'use the default'
4235 env_is_not_environ = env != environ;
4236 if (env_is_not_environ
4237 # ifdef USE_ITHREADS
4238 && PL_curinterp == aTHX
4247 for (; *env; env++) {
4250 if (!(s = strchr(old_var,'=')) || s == old_var)
4253 #if defined(MSDOS) && !defined(DJGPP)
4255 (void)strupr(old_var);
4258 sv = newSVpv(s+1, 0);
4259 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4260 if (env_is_not_environ)
4264 #endif /* USE_ENVIRON_ARRAY */
4265 #endif /* !PERL_MICRO */
4269 /* touch @F array to prevent spurious warnings 20020415 MJD */
4271 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4276 S_init_perllib(pTHX)
4279 const char *perl5lib = NULL;
4282 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4286 if (!TAINTING_get) {
4288 perl5lib = PerlEnv_getenv("PERL5LIB");
4290 * It isn't possible to delete an environment variable with
4291 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4292 * case we treat PERL5LIB as undefined if it has a zero-length value.
4294 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4295 if (perl5lib && *perl5lib != '\0')
4299 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4301 s = PerlEnv_getenv("PERLLIB");
4303 incpush_use_sep(s, 0, 0);
4306 /* Treat PERL5?LIB as a possible search list logical name -- the
4307 * "natural" VMS idiom for a Unix path string. We allow each
4308 * element to be a set of |-separated directories for compatibility.
4312 if (my_trnlnm("PERL5LIB",buf,0))
4314 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4315 } while (my_trnlnm("PERL5LIB",buf,++idx));
4317 while (my_trnlnm("PERLLIB",buf,idx++))
4318 incpush_use_sep(buf, 0, 0);
4323 #ifndef PERL_IS_MINIPERL
4324 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4325 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4327 /* Use the ~-expanded versions of APPLLIB (undocumented),
4328 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4331 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4332 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4336 /* sitearch is always relative to sitelib on Windows for
4337 * DLL-based path intuition to work correctly */
4338 # if !defined(WIN32)
4339 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4340 INCPUSH_CAN_RELOCATE);
4346 /* this picks up sitearch as well */
4347 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4349 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4351 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4355 #ifdef PERL_VENDORARCH_EXP
4356 /* vendorarch is always relative to vendorlib on Windows for
4357 * DLL-based path intuition to work correctly */
4358 # if !defined(WIN32)
4359 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4360 INCPUSH_CAN_RELOCATE);
4364 #ifdef PERL_VENDORLIB_EXP
4366 /* this picks up vendorarch as well */
4367 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4369 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4371 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4372 INCPUSH_CAN_RELOCATE);
4377 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4381 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4385 s = win32_get_privlib(PERL_FS_VERSION, &len);
4387 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4390 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4396 #ifdef PERL_OTHERLIBDIRS
4397 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4398 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4399 |INCPUSH_CAN_RELOCATE);
4402 if (!TAINTING_get) {
4405 * It isn't possible to delete an environment variable with
4406 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4407 * case we treat PERL5LIB as undefined if it has a zero-length value.
4409 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4410 if (perl5lib && *perl5lib != '\0')
4414 incpush_use_sep(perl5lib, 0,
4415 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4417 /* Treat PERL5?LIB as a possible search list logical name -- the
4418 * "natural" VMS idiom for a Unix path string. We allow each
4419 * element to be a set of |-separated directories for compatibility.
4423 if (my_trnlnm("PERL5LIB",buf,0))
4425 incpush_use_sep(buf, 0,
4426 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4427 } while (my_trnlnm("PERL5LIB",buf,++idx));
4431 /* Use the ~-expanded versions of APPLLIB (undocumented),
4432 SITELIB and VENDORLIB for older versions
4435 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4436 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4439 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4440 /* Search for version-specific dirs below here */
4441 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4442 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4446 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4447 /* Search for version-specific dirs below here */
4448 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4449 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4452 #ifdef PERL_OTHERLIBDIRS
4453 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4454 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4455 |INCPUSH_CAN_RELOCATE);
4457 #endif /* !PERL_IS_MINIPERL */
4460 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4463 #if defined(DOSISH) || defined(__SYMBIAN32__)
4464 # define PERLLIB_SEP ';'
4467 # define PERLLIB_SEP '|'
4469 # define PERLLIB_SEP ':'
4472 #ifndef PERLLIB_MANGLE
4473 # define PERLLIB_MANGLE(s,n) (s)
4476 #ifndef PERL_IS_MINIPERL
4477 /* Push a directory onto @INC if it exists.
4478 Generate a new SV if we do this, to save needing to copy the SV we push
4481 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4485 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4487 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4488 S_ISDIR(tmpstatbuf.st_mode)) {
4490 dir = newSVsv(stem);
4492 /* Truncate dir back to stem. */
4493 SvCUR_set(dir, SvCUR(stem));
4500 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4502 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4505 PERL_ARGS_ASSERT_MAYBERELOCATE;
4508 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4509 defined to so something (in os2/os2.c), but the code has been
4510 this way, ignoring any possible changed of length, since
4511 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4513 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4519 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4521 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4522 sv_usepvn(libdir,unix,len);
4525 PerlIO_printf(Perl_error_log,
4526 "Failed to unixify @INC element \"%s\"\n",
4527 SvPV_nolen_const(libdir));
4531 /* Do the if() outside the #ifdef to avoid warnings about an unused
4534 #ifdef PERL_RELOCATABLE_INC
4536 * Relocatable include entries are marked with a leading .../
4539 * 0: Remove that leading ".../"
4540 * 1: Remove trailing executable name (anything after the last '/')
4541 * from the perl path to give a perl prefix
4543 * While the @INC element starts "../" and the prefix ends with a real
4544 * directory (ie not . or ..) chop that real directory off the prefix
4545 * and the leading "../" from the @INC element. ie a logical "../"
4547 * Finally concatenate the prefix and the remainder of the @INC element
4548 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4549 * generates /usr/local/lib/perl5
4551 const char *libpath = SvPVX(libdir);
4552 STRLEN libpath_len = SvCUR(libdir);
4553 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4555 SV * const caret_X = get_sv("\030", 0);
4556 /* Going to use the SV just as a scratch buffer holding a C
4562 /* $^X is *the* source of taint if tainting is on, hence
4563 SvPOK() won't be true. */
4565 assert(SvPOKp(caret_X));
4566 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4568 /* Firstly take off the leading .../
4569 If all else fail we'll do the paths relative to the current
4571 sv_chop(libdir, libpath + 4);
4572 /* Don't use SvPV as we're intentionally bypassing taining,
4573 mortal copies that the mg_get of tainting creates, and
4574 corruption that seems to come via the save stack.
4575 I guess that the save stack isn't correctly set up yet. */
4576 libpath = SvPVX(libdir);
4577 libpath_len = SvCUR(libdir);
4579 /* This would work more efficiently with memrchr, but as it's
4580 only a GNU extension we'd need to probe for it and
4581 implement our own. Not hard, but maybe not worth it? */
4583 prefix = SvPVX(prefix_sv);
4584 lastslash = strrchr(prefix, '/');
4586 /* First time in with the *lastslash = '\0' we just wipe off
4587 the trailing /perl from (say) /usr/foo/bin/perl
4591 while ((*lastslash = '\0'), /* Do that, come what may. */
4592 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4593 && (lastslash = strrchr(prefix, '/')))) {
4594 if (lastslash[1] == '\0'
4595 || (lastslash[1] == '.'
4596 && (lastslash[2] == '/' /* ends "/." */
4597 || (lastslash[2] == '/'
4598 && lastslash[3] == '/' /* or "/.." */
4600 /* Prefix ends "/" or "/." or "/..", any of which
4601 are fishy, so don't do any more logical cleanup.
4605 /* Remove leading "../" from path */
4608 /* Next iteration round the loop removes the last
4609 directory name from prefix by writing a '\0' in
4610 the while clause. */
4612 /* prefix has been terminated with a '\0' to the correct
4613 length. libpath points somewhere into the libdir SV.
4614 We need to join the 2 with '/' and drop the result into
4616 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4617 SvREFCNT_dec(libdir);
4618 /* And this is the new libdir. */
4621 (PerlProc_getuid() != PerlProc_geteuid() ||
4622 PerlProc_getgid() != PerlProc_getegid())) {
4623 /* Need to taint relocated paths if running set ID */
4624 SvTAINTED_on(libdir);
4627 SvREFCNT_dec(prefix_sv);
4635 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4637 #ifndef PERL_IS_MINIPERL
4638 const U8 using_sub_dirs
4639 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4640 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4641 const U8 add_versioned_sub_dirs
4642 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4643 const U8 add_archonly_sub_dirs
4644 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4645 #ifdef PERL_INC_VERSION_LIST
4646 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4649 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4650 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4651 AV *const inc = GvAVn(PL_incgv);
4653 PERL_ARGS_ASSERT_INCPUSH;
4656 /* Could remove this vestigial extra block, if we don't mind a lot of
4657 re-indenting diff noise. */
4659 SV *const libdir = mayberelocate(dir, len, flags);
4660 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4661 arranged to unshift #! line -I onto the front of @INC. However,
4662 -I can add version and architecture specific libraries, and they
4663 need to go first. The old code assumed that it was always
4664 pushing. Hence to make it work, need to push the architecture
4665 (etc) libraries onto a temporary array, then "unshift" that onto
4666 the front of @INC. */
4667 #ifndef PERL_IS_MINIPERL
4668 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4671 * BEFORE pushing libdir onto @INC we may first push version- and
4672 * archname-specific sub-directories.
4674 if (using_sub_dirs) {
4675 SV *subdir = newSVsv(libdir);
4676 #ifdef PERL_INC_VERSION_LIST
4677 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4678 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4679 const char * const *incver;
4682 if (add_versioned_sub_dirs) {
4683 /* .../version/archname if -d .../version/archname */
4684 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4685 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4687 /* .../version if -d .../version */
4688 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4689 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4692 #ifdef PERL_INC_VERSION_LIST
4694 for (incver = incverlist; *incver; incver++) {
4695 /* .../xxx if -d .../xxx */
4696 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4697 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4702 if (add_archonly_sub_dirs) {
4703 /* .../archname if -d .../archname */
4704 sv_catpvs(subdir, "/" ARCHNAME);
4705 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4709 assert (SvREFCNT(subdir) == 1);
4710 SvREFCNT_dec(subdir);
4712 #endif /* !PERL_IS_MINIPERL */
4713 /* finally add this lib directory at the end of @INC */
4715 #ifdef PERL_IS_MINIPERL
4716 const Size_t extra = 0;
4718 Size_t extra = av_tindex(av) + 1;
4720 av_unshift(inc, extra + push_basedir);
4722 av_store(inc, extra, libdir);
4723 #ifndef PERL_IS_MINIPERL
4725 /* av owns a reference, av_store() expects to be donated a
4726 reference, and av expects to be sane when it's cleared.
4727 If I wanted to be naughty and wrong, I could peek inside the
4728 implementation of av_clear(), realise that it uses
4729 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4730 and so directly steal from it (with a memcpy() to inc, and
4731 then memset() to NULL them out. But people copy code from the
4732 core expecting it to be best practise, so let's use the API.
4733 Although studious readers will note that I'm not checking any
4735 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4740 else if (push_basedir) {
4741 av_push(inc, libdir);
4744 if (!push_basedir) {
4745 assert (SvREFCNT(libdir) == 1);
4746 SvREFCNT_dec(libdir);
4752 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4756 /* This logic has been broken out from S_incpush(). It may be possible to
4759 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4761 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4762 * argument to incpush_use_sep. This allows creation of relocatable
4763 * Perl distributions that patch the binary at install time. Those
4764 * distributions will have to provide their own relocation tools; this
4765 * is not a feature otherwise supported by core Perl.
4767 #ifndef PERL_RELOCATABLE_INCPUSH
4774 /* Break at all separators */
4775 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4777 /* skip any consecutive separators */
4779 /* Uncomment the next line for PATH semantics */
4780 /* But you'll need to write tests */
4781 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4783 incpush(p, (STRLEN)(s - p), flags);
4788 incpush(p, (STRLEN)(end - p), flags);
4793 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4796 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4802 PERL_ARGS_ASSERT_CALL_LIST;
4804 while (av_tindex(paramList) >= 0) {
4805 cv = MUTABLE_CV(av_shift(paramList));
4807 if (paramList == PL_beginav) {
4808 /* save PL_beginav for compiler */
4809 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4811 else if (paramList == PL_checkav) {
4812 /* save PL_checkav for compiler */
4813 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4815 else if (paramList == PL_unitcheckav) {
4816 /* save PL_unitcheckav for compiler */
4817 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4827 (void)SvPV_const(atsv, len);
4829 PL_curcop = &PL_compiling;
4830 CopLINE_set(PL_curcop, oldline);
4831 if (paramList == PL_beginav)
4832 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4834 Perl_sv_catpvf(aTHX_ atsv,
4835 "%s failed--call queue aborted",
4836 paramList == PL_checkav ? "CHECK"
4837 : paramList == PL_initav ? "INIT"
4838 : paramList == PL_unitcheckav ? "UNITCHECK"
4840 while (PL_scopestack_ix > oldscope)
4843 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4850 /* my_exit() was called */
4851 while (PL_scopestack_ix > oldscope)
4854 SET_CURSTASH(PL_defstash);
4855 PL_curcop = &PL_compiling;
4856 CopLINE_set(PL_curcop, oldline);
4859 assert(0); /* NOTREACHED */
4862 PL_curcop = &PL_compiling;
4863 CopLINE_set(PL_curcop, oldline);
4866 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4875 Perl_my_exit(pTHX_ U32 status)
4877 if (PL_exit_flags & PERL_EXIT_ABORT) {
4880 if (PL_exit_flags & PERL_EXIT_WARN) {
4881 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4882 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4883 PL_exit_flags &= ~PERL_EXIT_ABORT;
4893 STATUS_EXIT_SET(status);
4900 Perl_my_failure_exit(pTHX)
4903 /* We have been called to fall on our sword. The desired exit code
4904 * should be already set in STATUS_UNIX, but could be shifted over
4905 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4908 * If an error code has not been set, then force the issue.
4910 if (MY_POSIX_EXIT) {
4912 /* According to the die_exit.t tests, if errno is non-zero */
4913 /* It should be used for the error status. */
4915 if (errno == EVMSERR) {
4916 STATUS_NATIVE = vaxc$errno;
4919 /* According to die_exit.t tests, if the child_exit code is */
4920 /* also zero, then we need to exit with a code of 255 */
4921 if ((errno != 0) && (errno < 256))
4922 STATUS_UNIX_EXIT_SET(errno);
4923 else if (STATUS_UNIX < 255) {
4924 STATUS_UNIX_EXIT_SET(255);
4929 /* The exit code could have been set by $? or vmsish which
4930 * means that it may not have fatal set. So convert
4931 * success/warning codes to fatal with out changing
4932 * the POSIX status code. The severity makes VMS native
4933 * status handling work, while UNIX mode programs use the
4934 * the POSIX exit codes.
4936 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4937 STATUS_NATIVE &= STS$M_COND_ID;
4938 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4942 /* Traditionally Perl on VMS always expects a Fatal Error. */
4943 if (vaxc$errno & 1) {
4945 /* So force success status to failure */
4946 if (STATUS_NATIVE & 1)
4951 STATUS_UNIX = EINTR; /* In case something cares */
4956 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4958 /* Encode the severity code */
4959 severity = STATUS_NATIVE & STS$M_SEVERITY;
4960 STATUS_UNIX = (severity ? severity : 1) << 8;
4962 /* Perl expects this to be a fatal error */
4963 if (severity != STS$K_SEVERE)
4972 STATUS_UNIX_SET(errno);
4974 exitstatus = STATUS_UNIX >> 8;
4975 if (exitstatus & 255)
4976 STATUS_UNIX_SET(exitstatus);
4978 STATUS_UNIX_SET(255);
4981 if (PL_exit_flags & PERL_EXIT_ABORT) {
4984 if (PL_exit_flags & PERL_EXIT_WARN) {
4985 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4986 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
4987 PL_exit_flags &= ~PERL_EXIT_ABORT;
4993 S_my_exit_jump(pTHX)
4996 SvREFCNT_dec(PL_e_script);
5000 POPSTACK_TO(PL_mainstack);
5008 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5010 const char * const p = SvPVX_const(PL_e_script);
5011 const char *nl = strchr(p, '\n');
5013 PERL_UNUSED_ARG(idx);
5014 PERL_UNUSED_ARG(maxlen);
5016 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5018 filter_del(read_e_script);
5021 sv_catpvn(buf_sv, p, nl-p);
5022 sv_chop(PL_e_script, nl);
5028 * c-indentation-style: bsd
5030 * indent-tabs-mode: nil
5033 * ex: set ts=8 sts=4 sw=4 et: