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_InBitmap);
1038 SvREFCNT_dec(PL_UpperLatin1);
1039 SvREFCNT_dec(PL_Latin1);
1040 SvREFCNT_dec(PL_NonL1NonFinalFold);
1041 SvREFCNT_dec(PL_HasMultiCharFold);
1042 PL_utf8_mark = NULL;
1043 PL_utf8_toupper = NULL;
1044 PL_utf8_totitle = NULL;
1045 PL_utf8_tolower = NULL;
1046 PL_utf8_tofold = NULL;
1047 PL_utf8_idstart = NULL;
1048 PL_utf8_idcont = NULL;
1049 PL_utf8_foldclosures = NULL;
1050 PL_AboveLatin1 = NULL;
1052 PL_HasMultiCharFold = NULL;
1054 PL_NonL1NonFinalFold = NULL;
1055 PL_UpperLatin1 = NULL;
1056 for (i = 0; i < POSIX_CC_COUNT; i++) {
1057 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1058 PL_XPosix_ptrs[i] = NULL;
1061 if (!specialWARN(PL_compiling.cop_warnings))
1062 PerlMemShared_free(PL_compiling.cop_warnings);
1063 PL_compiling.cop_warnings = NULL;
1064 cophh_free(CopHINTHASH_get(&PL_compiling));
1065 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1066 CopFILE_free(&PL_compiling);
1068 /* Prepare to destruct main symbol table. */
1071 /* break ref loop *:: <=> %:: */
1072 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1075 SvREFCNT_dec(PL_curstname);
1076 PL_curstname = NULL;
1078 /* clear queued errors */
1079 SvREFCNT_dec(PL_errors);
1082 SvREFCNT_dec(PL_isarev);
1085 if (destruct_level >= 2) {
1086 if (PL_scopestack_ix != 0)
1087 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1088 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1089 (long)PL_scopestack_ix);
1090 if (PL_savestack_ix != 0)
1091 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1092 "Unbalanced saves: %ld more saves than restores\n",
1093 (long)PL_savestack_ix);
1094 if (PL_tmps_floor != -1)
1095 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1096 (long)PL_tmps_floor + 1);
1097 if (cxstack_ix != -1)
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1099 (long)cxstack_ix + 1);
1103 SvREFCNT_dec(PL_regex_padav);
1104 PL_regex_padav = NULL;
1105 PL_regex_pad = NULL;
1108 #ifdef PERL_IMPLICIT_CONTEXT
1109 /* the entries in this list are allocated via SV PVX's, so get freed
1110 * in sv_clean_all */
1111 Safefree(PL_my_cxt_list);
1114 /* Now absolutely destruct everything, somehow or other, loops or no. */
1116 /* the 2 is for PL_fdpid and PL_strtab */
1117 while (sv_clean_all() > 2)
1121 Safefree(PL_stashpad); /* must come after sv_clean_all */
1124 AvREAL_off(PL_fdpid); /* no surviving entries */
1125 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1128 #ifdef HAVE_INTERP_INTERN
1132 /* constant strings */
1133 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1134 SvREFCNT_dec(PL_sv_consts[i]);
1135 PL_sv_consts[i] = NULL;
1138 /* Destruct the global string table. */
1140 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1141 * so that sv_free() won't fail on them.
1142 * Now that the global string table is using a single hunk of memory
1143 * for both HE and HEK, we either need to explicitly unshare it the
1144 * correct way, or actually free things here.
1147 const I32 max = HvMAX(PL_strtab);
1148 HE * const * const array = HvARRAY(PL_strtab);
1149 HE *hent = array[0];
1152 if (hent && ckWARN_d(WARN_INTERNAL)) {
1153 HE * const next = HeNEXT(hent);
1154 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1155 "Unbalanced string table refcount: (%ld) for \"%s\"",
1156 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1163 hent = array[riter];
1168 HvARRAY(PL_strtab) = 0;
1169 HvTOTALKEYS(PL_strtab) = 0;
1171 SvREFCNT_dec(PL_strtab);
1174 /* free the pointer tables used for cloning */
1175 ptr_table_free(PL_ptr_table);
1176 PL_ptr_table = (PTR_TBL_t*)NULL;
1179 /* free special SVs */
1181 SvREFCNT(&PL_sv_yes) = 0;
1182 sv_clear(&PL_sv_yes);
1183 SvANY(&PL_sv_yes) = NULL;
1184 SvFLAGS(&PL_sv_yes) = 0;
1186 SvREFCNT(&PL_sv_no) = 0;
1187 sv_clear(&PL_sv_no);
1188 SvANY(&PL_sv_no) = NULL;
1189 SvFLAGS(&PL_sv_no) = 0;
1193 for (i=0; i<=2; i++) {
1194 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1195 sv_clear(PERL_DEBUG_PAD(i));
1196 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1197 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1201 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1202 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1204 #ifdef DEBUG_LEAKING_SCALARS
1205 if (PL_sv_count != 0) {
1210 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1211 svend = &sva[SvREFCNT(sva)];
1212 for (sv = sva + 1; sv < svend; ++sv) {
1213 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1214 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1216 " refcnt=%"UVuf pTHX__FORMAT "\n"
1217 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1219 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1221 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1223 sv->sv_debug_inpad ? "for" : "by",
1224 sv->sv_debug_optype ?
1225 PL_op_name[sv->sv_debug_optype]: "(none)",
1226 PTR2UV(sv->sv_debug_parent),
1229 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1230 Perl_dump_sv_child(aTHX_ sv);
1236 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1240 /* Wait for up to 4 seconds for child to terminate.
1241 This seems to be the least effort way of timing out on reaping
1243 struct timeval waitfor = {4, 0};
1244 int sock = PL_dumper_fd;
1248 FD_SET(sock, &rset);
1249 select(sock + 1, &rset, NULL, NULL, &waitfor);
1250 waitpid(child, &status, WNOHANG);
1255 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1261 #if defined(PERLIO_LAYERS)
1262 /* No more IO - including error messages ! */
1263 PerlIO_cleanup(aTHX);
1266 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1267 as currently layers use it rather than NULL as a marker
1268 for no arg - and will try and SvREFCNT_dec it.
1270 SvREFCNT(&PL_sv_undef) = 0;
1271 SvREADONLY_off(&PL_sv_undef);
1273 Safefree(PL_origfilename);
1274 PL_origfilename = NULL;
1275 Safefree(PL_reg_curpm);
1276 free_tied_hv_pool();
1277 Safefree(PL_op_mask);
1278 Safefree(PL_psig_name);
1279 PL_psig_name = (SV**)NULL;
1280 PL_psig_ptr = (SV**)NULL;
1282 /* We need to NULL PL_psig_pend first, so that
1283 signal handlers know not to use it */
1284 int *psig_save = PL_psig_pend;
1285 PL_psig_pend = (int*)NULL;
1286 Safefree(psig_save);
1289 TAINTING_set(FALSE);
1290 TAINT_WARN_set(FALSE);
1291 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1294 DEBUG_P(debprofdump());
1296 #ifdef USE_REENTRANT_API
1297 Perl_reentrant_free(aTHX);
1302 while (PL_regmatch_slab) {
1303 regmatch_slab *s = PL_regmatch_slab;
1304 PL_regmatch_slab = PL_regmatch_slab->next;
1308 /* As the absolutely last thing, free the non-arena SV for mess() */
1311 /* we know that type == SVt_PVMG */
1313 /* it could have accumulated taint magic */
1316 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1317 moremagic = mg->mg_moremagic;
1318 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1320 Safefree(mg->mg_ptr);
1324 /* we know that type >= SVt_PV */
1325 SvPV_free(PL_mess_sv);
1326 Safefree(SvANY(PL_mess_sv));
1327 Safefree(PL_mess_sv);
1334 =for apidoc perl_free
1336 Releases a Perl interpreter. See L<perlembed>.
1346 PERL_ARGS_ASSERT_PERL_FREE;
1348 if (PL_veto_cleanup)
1351 #ifdef PERL_TRACK_MEMPOOL
1354 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1355 * value as we're probably hunting memory leaks then
1357 if (PL_perl_destruct_level == 0) {
1358 const U32 old_debug = PL_debug;
1359 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1360 thread at thread exit. */
1362 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1363 "free this thread's memory\n");
1364 PL_debug &= ~ DEBUG_m_FLAG;
1366 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1367 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
1368 PL_debug = old_debug;
1373 #if defined(WIN32) || defined(NETWARE)
1374 # if defined(PERL_IMPLICIT_SYS)
1377 void *host = nw_internal_host;
1378 PerlMem_free(aTHXx);
1379 nw_delete_internal_host(host);
1381 void *host = w32_internal_host;
1382 PerlMem_free(aTHXx);
1383 win32_delete_internal_host(host);
1387 PerlMem_free(aTHXx);
1390 PerlMem_free(aTHXx);
1394 #if defined(USE_ITHREADS)
1395 /* provide destructors to clean up the thread key when libperl is unloaded */
1396 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1398 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1399 #pragma fini "perl_fini"
1400 #elif defined(__sun) && !defined(__GNUC__)
1401 #pragma fini (perl_fini)
1405 #if defined(__GNUC__)
1406 __attribute__((destructor))
1412 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1415 PL_curinterp && !PL_veto_cleanup)
1420 #endif /* THREADS */
1423 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1425 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1426 PL_exitlist[PL_exitlistlen].fn = fn;
1427 PL_exitlist[PL_exitlistlen].ptr = ptr;
1432 =for apidoc perl_parse
1434 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1439 #define SET_CURSTASH(newstash) \
1440 if (PL_curstash != newstash) { \
1441 SvREFCNT_dec(PL_curstash); \
1442 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1446 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1453 PERL_ARGS_ASSERT_PERL_PARSE;
1454 #ifndef MULTIPLICITY
1455 PERL_UNUSED_ARG(my_perl);
1457 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1459 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1461 if (s && (grok_atou(s, NULL) == 1)) {
1462 unsigned char *seed= PERL_HASH_SEED;
1463 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1464 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1465 while (seed < seed_end) {
1466 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1468 #ifdef PERL_HASH_RANDOMIZE_KEYS
1469 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1470 PL_HASH_RAND_BITS_ENABLED,
1471 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1473 PerlIO_printf(Perl_debug_log, "\n");
1476 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1480 if (PL_origalen != 0) {
1481 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1484 /* Set PL_origalen be the sum of the contiguous argv[]
1485 * elements plus the size of the env in case that it is
1486 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1487 * as the maximum modifiable length of $0. In the worst case
1488 * the area we are able to modify is limited to the size of
1489 * the original argv[0]. (See below for 'contiguous', though.)
1491 const char *s = NULL;
1493 const UV mask = ~(UV)(PTRSIZE-1);
1494 /* Do the mask check only if the args seem like aligned. */
1496 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1498 /* See if all the arguments are contiguous in memory. Note
1499 * that 'contiguous' is a loose term because some platforms
1500 * align the argv[] and the envp[]. If the arguments look
1501 * like non-aligned, assume that they are 'strictly' or
1502 * 'traditionally' contiguous. If the arguments look like
1503 * aligned, we just check that they are within aligned
1504 * PTRSIZE bytes. As long as no system has something bizarre
1505 * like the argv[] interleaved with some other data, we are
1506 * fine. (Did I just evoke Murphy's Law?) --jhi */
1507 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1509 for (i = 1; i < PL_origargc; i++) {
1510 if ((PL_origargv[i] == s + 1
1512 || PL_origargv[i] == s + 2
1517 (PL_origargv[i] > s &&
1519 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1530 #ifndef PERL_USE_SAFE_PUTENV
1531 /* Can we grab env area too to be used as the area for $0? */
1532 if (s && PL_origenviron && !PL_use_safe_putenv) {
1533 if ((PL_origenviron[0] == s + 1)
1536 (PL_origenviron[0] > s &&
1537 PL_origenviron[0] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1542 s = PL_origenviron[0];
1545 my_setenv("NoNe SuCh", NULL);
1546 /* Force copy of environment. */
1547 for (i = 1; PL_origenviron[i]; i++) {
1548 if (PL_origenviron[i] == s + 1
1551 (PL_origenviron[i] > s &&
1552 PL_origenviron[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 s = PL_origenviron[i];
1564 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1566 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1571 /* Come here if running an undumped a.out. */
1573 PL_origfilename = savepv(argv[0]);
1574 PL_do_undump = FALSE;
1575 cxstack_ix = -1; /* start label stack again */
1577 assert (!TAINT_get);
1581 init_postdump_symbols(argc,argv,env);
1586 op_free(PL_main_root);
1587 PL_main_root = NULL;
1589 PL_main_start = NULL;
1590 SvREFCNT_dec(PL_main_cv);
1594 oldscope = PL_scopestack_ix;
1595 PL_dowarn = G_WARN_OFF;
1600 parse_body(env,xsinit);
1601 if (PL_unitcheckav) {
1602 call_list(oldscope, PL_unitcheckav);
1605 PERL_SET_PHASE(PERL_PHASE_CHECK);
1606 call_list(oldscope, PL_checkav);
1614 /* my_exit() was called */
1615 while (PL_scopestack_ix > oldscope)
1618 SET_CURSTASH(PL_defstash);
1619 if (PL_unitcheckav) {
1620 call_list(oldscope, PL_unitcheckav);
1623 PERL_SET_PHASE(PERL_PHASE_CHECK);
1624 call_list(oldscope, PL_checkav);
1629 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1637 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1638 miniperl, and we need to see those flags reflected in the values here. */
1640 /* What this returns is subject to change. Use the public interface in Config.
1643 S_Internals_V(pTHX_ CV *cv)
1646 #ifdef LOCAL_PATCH_COUNT
1647 const int local_patch_count = LOCAL_PATCH_COUNT;
1649 const int local_patch_count = 0;
1651 const int entries = 3 + local_patch_count;
1653 static const char non_bincompat_options[] =
1660 # ifdef NO_HASH_SEED
1663 # ifdef NO_TAINT_SUPPORT
1666 # ifdef PERL_BOOL_AS_CHAR
1667 " PERL_BOOL_AS_CHAR"
1669 # ifdef PERL_DISABLE_PMC
1672 # ifdef PERL_DONT_CREATE_GVSV
1673 " PERL_DONT_CREATE_GVSV"
1675 # ifdef PERL_EXTERNAL_GLOB
1676 " PERL_EXTERNAL_GLOB"
1678 # ifdef PERL_HASH_FUNC_SIPHASH
1679 " PERL_HASH_FUNC_SIPHASH"
1681 # ifdef PERL_HASH_FUNC_SDBM
1682 " PERL_HASH_FUNC_SDBM"
1684 # ifdef PERL_HASH_FUNC_DJB2
1685 " PERL_HASH_FUNC_DJB2"
1687 # ifdef PERL_HASH_FUNC_SUPERFAST
1688 " PERL_HASH_FUNC_SUPERFAST"
1690 # ifdef PERL_HASH_FUNC_MURMUR3
1691 " PERL_HASH_FUNC_MURMUR3"
1693 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1694 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1696 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1699 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1702 # ifdef PERL_IS_MINIPERL
1705 # ifdef PERL_MALLOC_WRAP
1708 # ifdef PERL_MEM_LOG
1711 # ifdef PERL_MEM_LOG_NOIMPL
1712 " PERL_MEM_LOG_NOIMPL"
1714 # ifdef PERL_NEW_COPY_ON_WRITE
1715 " PERL_NEW_COPY_ON_WRITE"
1717 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1718 " PERL_PERTURB_KEYS_DETERMINISTIC"
1720 # ifdef PERL_PERTURB_KEYS_DISABLED
1721 " PERL_PERTURB_KEYS_DISABLED"
1723 # ifdef PERL_PERTURB_KEYS_RANDOM
1724 " PERL_PERTURB_KEYS_RANDOM"
1726 # ifdef PERL_PRESERVE_IVUV
1727 " PERL_PRESERVE_IVUV"
1729 # ifdef PERL_RELOCATABLE_INCPUSH
1730 " PERL_RELOCATABLE_INCPUSH"
1732 # ifdef PERL_USE_DEVEL
1735 # ifdef PERL_USE_SAFE_PUTENV
1736 " PERL_USE_SAFE_PUTENV"
1738 # ifdef UNLINK_ALL_VERSIONS
1739 " UNLINK_ALL_VERSIONS"
1741 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1742 " USE_ATTRIBUTES_FOR_PERLIO"
1744 # ifdef USE_FAST_STDIO
1747 # ifdef USE_HASH_SEED_EXPLICIT
1748 " USE_HASH_SEED_EXPLICIT"
1753 # ifdef USE_LOCALE_CTYPE
1756 # ifdef USE_PERL_ATOF
1759 # ifdef USE_SITECUSTOMIZE
1760 " USE_SITECUSTOMIZE"
1763 PERL_UNUSED_ARG(cv);
1764 PERL_UNUSED_ARG(items);
1766 EXTEND(SP, entries);
1768 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1769 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1770 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1774 PUSHs(Perl_newSVpvn_flags(aTHX_
1775 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1778 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1782 PUSHs(&PL_sv_undef);
1785 for (i = 1; i <= local_patch_count; i++) {
1786 /* This will be an undef, if PL_localpatches[i] is NULL. */
1787 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1793 #define INCPUSH_UNSHIFT 0x01
1794 #define INCPUSH_ADD_OLD_VERS 0x02
1795 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1796 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1797 #define INCPUSH_NOT_BASEDIR 0x10
1798 #define INCPUSH_CAN_RELOCATE 0x20
1799 #define INCPUSH_ADD_SUB_DIRS \
1800 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1803 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1807 int argc = PL_origargc;
1808 char **argv = PL_origargv;
1809 const char *scriptname = NULL;
1810 VOL bool dosearch = FALSE;
1812 bool doextract = FALSE;
1813 const char *cddir = NULL;
1814 #ifdef USE_SITECUSTOMIZE
1815 bool minus_f = FALSE;
1817 SV *linestr_sv = NULL;
1818 bool add_read_e_script = FALSE;
1819 U32 lex_start_flags = 0;
1821 PERL_SET_PHASE(PERL_PHASE_START);
1827 for (argc--,argv++; argc > 0; argc--,argv++) {
1828 if (argv[0][0] != '-' || !argv[0][1])
1834 #ifndef PERL_STRICT_CR
1858 if ((s = moreswitches(s)))
1863 #if defined(SILENT_NO_TAINT_SUPPORT)
1864 /* silently ignore */
1865 #elif defined(NO_TAINT_SUPPORT)
1866 Perl_croak_nocontext("This perl was compiled without taint support. "
1867 "Cowardly refusing to run with -t or -T flags");
1869 CHECK_MALLOC_TOO_LATE_FOR('t');
1870 if( !TAINTING_get ) {
1871 TAINT_WARN_set(TRUE);
1878 #if defined(SILENT_NO_TAINT_SUPPORT)
1879 /* silently ignore */
1880 #elif defined(NO_TAINT_SUPPORT)
1881 Perl_croak_nocontext("This perl was compiled without taint support. "
1882 "Cowardly refusing to run with -t or -T flags");
1884 CHECK_MALLOC_TOO_LATE_FOR('T');
1886 TAINT_WARN_set(FALSE);
1895 forbid_setid('e', FALSE);
1897 PL_e_script = newSVpvs("");
1898 add_read_e_script = TRUE;
1901 sv_catpv(PL_e_script, s);
1903 sv_catpv(PL_e_script, argv[1]);
1907 Perl_croak(aTHX_ "No code specified for -%c", c);
1908 sv_catpvs(PL_e_script, "\n");
1912 #ifdef USE_SITECUSTOMIZE
1918 case 'I': /* -I handled both here and in moreswitches() */
1919 forbid_setid('I', FALSE);
1920 if (!*++s && (s=argv[1]) != NULL) {
1924 STRLEN len = strlen(s);
1925 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1928 Perl_croak(aTHX_ "No directory specified for -I");
1931 forbid_setid('S', FALSE);
1940 opts_prog = newSVpvs("use Config; Config::_V()");
1944 opts_prog = Perl_newSVpvf(aTHX_
1945 "use Config; Config::config_vars(qw%c%s%c)",
1949 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1950 /* don't look for script or read stdin */
1951 scriptname = BIT_BUCKET;
1963 if (!*++s || isSPACE(*s)) {
1967 /* catch use of gnu style long options.
1968 Both of these exit immediately. */
1969 if (strEQ(s, "version"))
1971 if (strEQ(s, "help"))
1976 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1987 #ifndef SECURE_INTERNAL_GETENV
1990 (s = PerlEnv_getenv("PERL5OPT")))
1994 if (*s == '-' && *(s+1) == 'T') {
1995 #if defined(SILENT_NO_TAINT_SUPPORT)
1996 /* silently ignore */
1997 #elif defined(NO_TAINT_SUPPORT)
1998 Perl_croak_nocontext("This perl was compiled without taint support. "
1999 "Cowardly refusing to run with -t or -T flags");
2001 CHECK_MALLOC_TOO_LATE_FOR('T');
2003 TAINT_WARN_set(FALSE);
2007 char *popt_copy = NULL;
2020 if (!strchr("CDIMUdmtwW", *s))
2021 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2025 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2026 s = popt_copy + (s - d);
2034 #if defined(SILENT_NO_TAINT_SUPPORT)
2035 /* silently ignore */
2036 #elif defined(NO_TAINT_SUPPORT)
2037 Perl_croak_nocontext("This perl was compiled without taint support. "
2038 "Cowardly refusing to run with -t or -T flags");
2040 if( !TAINTING_get) {
2041 TAINT_WARN_set(TRUE);
2053 /* Set $^X early so that it can be used for relocatable paths in @INC */
2054 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2055 assert (!TAINT_get);
2060 #if defined(USE_SITECUSTOMIZE)
2062 /* The games with local $! are to avoid setting errno if there is no
2063 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2064 ie a q() operator with a NUL byte as a the delimiter. This avoids
2065 problems with pathnames containing (say) ' */
2066 # ifdef PERL_IS_MINIPERL
2067 AV *const inc = GvAV(PL_incgv);
2068 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2071 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2072 it should be reported immediately as a build failure. */
2073 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2075 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2076 "do {local $!; -f $f }"
2077 " and do $f || die $@ || qq '$f: $!' }",
2078 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2081 /* SITELIB_EXP is a function call on Win32. */
2082 const char *const raw_sitelib = SITELIB_EXP;
2084 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2085 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2086 INCPUSH_CAN_RELOCATE);
2087 const char *const sitelib = SvPVX(sitelib_sv);
2088 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2090 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2091 0, SVfARG(sitelib), 0,
2092 0, SVfARG(sitelib), 0));
2093 assert (SvREFCNT(sitelib_sv) == 1);
2094 SvREFCNT_dec(sitelib_sv);
2101 scriptname = argv[0];
2104 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2106 else if (scriptname == NULL) {
2108 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2114 assert (!TAINT_get);
2118 bool suidscript = FALSE;
2120 rsfp = open_script(scriptname, dosearch, &suidscript);
2122 rsfp = PerlIO_stdin();
2123 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2126 validate_suid(rsfp);
2129 # if defined(SIGCHLD) || defined(SIGCLD)
2132 # define SIGCHLD SIGCLD
2134 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2135 if (sigstate == (Sighandler_t) SIG_IGN) {
2136 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2137 "Can't ignore signal CHLD, forcing to default");
2138 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2146 /* This will croak if suidscript is true, as -x cannot be used with
2148 forbid_setid('x', suidscript);
2149 /* Hence you can't get here if suidscript is true */
2151 linestr_sv = newSV_type(SVt_PV);
2152 lex_start_flags |= LEX_START_COPIED;
2153 find_beginning(linestr_sv, rsfp);
2154 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2155 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2159 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2160 CvUNIQUE_on(PL_compcv);
2162 CvPADLIST(PL_compcv) = pad_new(0);
2164 PL_isarev = newHV();
2167 boot_core_UNIVERSAL();
2169 newXS("Internals::V", S_Internals_V, __FILE__);
2172 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2174 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2180 # ifdef HAS_SOCKS5_INIT
2181 socks5_init(argv[0]);
2187 init_predump_symbols();
2188 /* init_postdump_symbols not currently designed to be called */
2189 /* more than once (ENV isn't cleared first, for example) */
2190 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2192 init_postdump_symbols(argc,argv,env);
2194 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2195 * or explicitly in some platforms.
2196 * locale.c:Perl_init_i18nl10n() if the environment
2197 * look like the user wants to use UTF-8. */
2198 #if defined(__SYMBIAN32__)
2199 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2201 # ifndef PERL_IS_MINIPERL
2203 /* Requires init_predump_symbols(). */
2204 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2209 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2210 * and the default open disciplines. */
2211 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2212 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2214 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2215 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2216 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2220 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2222 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2223 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2224 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2226 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2227 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2230 sv_setpvs(sv, ":utf8\0:utf8");
2232 sv_setpvs(sv, ":utf8\0");
2235 sv_setpvs(sv, "\0:utf8");
2244 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2245 if (strEQ(s, "unsafe"))
2246 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2247 else if (strEQ(s, "safe"))
2248 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2250 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2255 lex_start(linestr_sv, rsfp, lex_start_flags);
2256 SvREFCNT_dec(linestr_sv);
2258 PL_subname = newSVpvs("main");
2260 if (add_read_e_script)
2261 filter_add(read_e_script, NULL);
2263 /* now parse the script */
2265 SETERRNO(0,SS_NORMAL);
2266 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2268 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2270 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2274 CopLINE_set(PL_curcop, 0);
2275 SET_CURSTASH(PL_defstash);
2277 SvREFCNT_dec(PL_e_script);
2285 SAVECOPFILE(PL_curcop);
2286 SAVECOPLINE(PL_curcop);
2287 gv_check(PL_defstash);
2296 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2297 dump_mstats("after compilation:");
2302 PL_restartjmpenv = NULL;
2308 =for apidoc perl_run
2310 Tells a Perl interpreter to run. See L<perlembed>.
2322 PERL_ARGS_ASSERT_PERL_RUN;
2323 #ifndef MULTIPLICITY
2324 PERL_UNUSED_ARG(my_perl);
2327 oldscope = PL_scopestack_ix;
2335 cxstack_ix = -1; /* start context stack again */
2337 case 0: /* normal completion */
2341 case 2: /* my_exit() */
2342 while (PL_scopestack_ix > oldscope)
2345 SET_CURSTASH(PL_defstash);
2346 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2347 PL_endav && !PL_minus_c) {
2348 PERL_SET_PHASE(PERL_PHASE_END);
2349 call_list(oldscope, PL_endav);
2352 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2353 dump_mstats("after execution: ");
2359 POPSTACK_TO(PL_mainstack);
2362 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2373 S_run_body(pTHX_ I32 oldscope)
2375 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2376 PL_sawampersand ? "Enabling" : "Omitting",
2377 (unsigned int)(PL_sawampersand)));
2379 if (!PL_restartop) {
2381 if (DEBUG_x_TEST || DEBUG_B_TEST)
2382 dump_all_perl(!DEBUG_B_TEST);
2384 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2388 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2391 if (PERLDB_SINGLE && PL_DBsingle)
2392 sv_setiv(PL_DBsingle, 1);
2394 PERL_SET_PHASE(PERL_PHASE_INIT);
2395 call_list(oldscope, PL_initav);
2397 #ifdef PERL_DEBUG_READONLY_OPS
2398 if (PL_main_root && PL_main_root->op_slabbed)
2399 Slab_to_ro(OpSLAB(PL_main_root));
2405 PERL_SET_PHASE(PERL_PHASE_RUN);
2408 PL_restartjmpenv = NULL;
2409 PL_op = PL_restartop;
2413 else if (PL_main_start) {
2414 CvDEPTH(PL_main_cv) = 1;
2415 PL_op = PL_main_start;
2419 assert(0); /* NOTREACHED */
2423 =head1 SV Manipulation Functions
2425 =for apidoc p||get_sv
2427 Returns the SV of the specified Perl scalar. C<flags> are passed to
2428 C<gv_fetchpv>. If C<GV_ADD> is set and the
2429 Perl variable does not exist then it will be created. If C<flags> is zero
2430 and the variable does not exist then NULL is returned.
2436 Perl_get_sv(pTHX_ const char *name, I32 flags)
2440 PERL_ARGS_ASSERT_GET_SV;
2442 gv = gv_fetchpv(name, flags, SVt_PV);
2449 =head1 Array Manipulation Functions
2451 =for apidoc p||get_av
2453 Returns the AV of the specified Perl global or package array with the given
2454 name (so it won't work on lexical variables). C<flags> are passed
2455 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2456 Perl variable does not exist then it will be created. If C<flags> is zero
2457 and the variable does not exist then NULL is returned.
2459 Perl equivalent: C<@{"$name"}>.
2465 Perl_get_av(pTHX_ const char *name, I32 flags)
2467 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2469 PERL_ARGS_ASSERT_GET_AV;
2479 =head1 Hash Manipulation Functions
2481 =for apidoc p||get_hv
2483 Returns the HV of the specified Perl hash. C<flags> are passed to
2484 C<gv_fetchpv>. If C<GV_ADD> is set and the
2485 Perl variable does not exist then it will be created. If C<flags> is zero
2486 and the variable does not exist then NULL is returned.
2492 Perl_get_hv(pTHX_ const char *name, I32 flags)
2494 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2496 PERL_ARGS_ASSERT_GET_HV;
2506 =head1 CV Manipulation Functions
2508 =for apidoc p||get_cvn_flags
2510 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2511 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2512 exist then it will be declared (which has the same effect as saying
2513 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2514 then NULL is returned.
2516 =for apidoc p||get_cv
2518 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2524 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2526 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2528 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2530 /* XXX this is probably not what they think they're getting.
2531 * It has the same effect as "sub name;", i.e. just a forward
2533 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2534 return newSTUB(gv,0);
2541 /* Nothing in core calls this now, but we can't replace it with a macro and
2542 move it to mathoms.c as a macro would evaluate name twice. */
2544 Perl_get_cv(pTHX_ const char *name, I32 flags)
2546 PERL_ARGS_ASSERT_GET_CV;
2548 return get_cvn_flags(name, strlen(name), flags);
2551 /* Be sure to refetch the stack pointer after calling these routines. */
2555 =head1 Callback Functions
2557 =for apidoc p||call_argv
2559 Performs a callback to the specified named and package-scoped Perl subroutine
2560 with C<argv> (a NULL-terminated array of strings) as arguments. See
2563 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2569 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2571 /* See G_* flags in cop.h */
2572 /* null terminated arg list */
2576 PERL_ARGS_ASSERT_CALL_ARGV;
2581 mXPUSHs(newSVpv(*argv,0));
2586 return call_pv(sub_name, flags);
2590 =for apidoc p||call_pv
2592 Performs a callback to the specified Perl sub. See L<perlcall>.
2598 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2599 /* name of the subroutine */
2600 /* See G_* flags in cop.h */
2602 PERL_ARGS_ASSERT_CALL_PV;
2604 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2608 =for apidoc p||call_method
2610 Performs a callback to the specified Perl method. The blessed object must
2611 be on the stack. See L<perlcall>.
2617 Perl_call_method(pTHX_ const char *methname, I32 flags)
2618 /* name of the subroutine */
2619 /* See G_* flags in cop.h */
2623 PERL_ARGS_ASSERT_CALL_METHOD;
2625 len = strlen(methname);
2626 sv = flags & G_METHOD_NAMED
2627 ? sv_2mortal(newSVpvn_share(methname, len,0))
2628 : newSVpvn_flags(methname, len, SVs_TEMP);
2630 return call_sv(sv, flags | G_METHOD);
2633 /* May be called with any of a CV, a GV, or an SV containing the name. */
2635 =for apidoc p||call_sv
2637 Performs a callback to the Perl sub whose name is in the SV. See
2644 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2645 /* See G_* flags in cop.h */
2648 LOGOP myop; /* fake syntax tree node */
2654 bool oldcatch = CATCH_GET;
2656 OP* const oldop = PL_op;
2659 PERL_ARGS_ASSERT_CALL_SV;
2661 if (flags & G_DISCARD) {
2665 if (!(flags & G_WANT)) {
2666 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2671 Zero(&myop, 1, LOGOP);
2672 if (!(flags & G_NOARGS))
2673 myop.op_flags |= OPf_STACKED;
2674 myop.op_flags |= OP_GIMME_REVERSE(flags);
2678 EXTEND(PL_stack_sp, 1);
2679 if (!(flags & G_METHOD_NAMED))
2680 *++PL_stack_sp = sv;
2682 oldscope = PL_scopestack_ix;
2684 if (PERLDB_SUB && PL_curstash != PL_debstash
2685 /* Handle first BEGIN of -d. */
2686 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2687 /* Try harder, since this may have been a sighandler, thus
2688 * curstash may be meaningless. */
2689 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2690 && !(flags & G_NODEBUG))
2691 myop.op_private |= OPpENTERSUB_DB;
2693 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2694 if ( flags & G_METHOD_NAMED ) {
2695 Zero(&method_svop, 1, SVOP);
2696 method_svop.op_next = (OP*)&myop;
2697 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2698 method_svop.op_type = OP_METHOD_NAMED;
2699 method_svop.op_sv = sv;
2700 PL_op = (OP*)&method_svop;
2702 Zero(&method_unop, 1, UNOP);
2703 method_unop.op_next = (OP*)&myop;
2704 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2705 method_unop.op_type = OP_METHOD;
2706 PL_op = (OP*)&method_unop;
2708 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2709 myop.op_type = OP_ENTERSUB;
2713 if (!(flags & G_EVAL)) {
2715 CALL_BODY_SUB((OP*)&myop);
2716 retval = PL_stack_sp - (PL_stack_base + oldmark);
2717 CATCH_SET(oldcatch);
2720 myop.op_other = (OP*)&myop;
2722 create_eval_scope(flags|G_FAKINGEVAL);
2730 CALL_BODY_SUB((OP*)&myop);
2731 retval = PL_stack_sp - (PL_stack_base + oldmark);
2732 if (!(flags & G_KEEPERR)) {
2740 /* my_exit() was called */
2741 SET_CURSTASH(PL_defstash);
2745 assert(0); /* NOTREACHED */
2748 PL_restartjmpenv = NULL;
2749 PL_op = PL_restartop;
2753 PL_stack_sp = PL_stack_base + oldmark;
2754 if ((flags & G_WANT) == G_ARRAY)
2758 *++PL_stack_sp = &PL_sv_undef;
2763 if (PL_scopestack_ix > oldscope)
2764 delete_eval_scope();
2768 if (flags & G_DISCARD) {
2769 PL_stack_sp = PL_stack_base + oldmark;
2778 /* Eval a string. The G_EVAL flag is always assumed. */
2781 =for apidoc p||eval_sv
2783 Tells Perl to C<eval> the string in the SV. It supports the same flags
2784 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2790 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2792 /* See G_* flags in cop.h */
2796 UNOP myop; /* fake syntax tree node */
2797 VOL I32 oldmark = SP - PL_stack_base;
2800 OP* const oldop = PL_op;
2803 PERL_ARGS_ASSERT_EVAL_SV;
2805 if (flags & G_DISCARD) {
2812 Zero(&myop, 1, UNOP);
2813 EXTEND(PL_stack_sp, 1);
2814 *++PL_stack_sp = sv;
2816 if (!(flags & G_NOARGS))
2817 myop.op_flags = OPf_STACKED;
2818 myop.op_type = OP_ENTEREVAL;
2819 myop.op_flags |= OP_GIMME_REVERSE(flags);
2820 if (flags & G_KEEPERR)
2821 myop.op_flags |= OPf_SPECIAL;
2823 if (flags & G_RE_REPARSING)
2824 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2826 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2827 * before a PUSHEVAL, which corrupts the stack after a croak */
2828 TAINT_PROPER("eval_sv()");
2834 if (PL_op == (OP*)(&myop)) {
2835 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2837 goto fail; /* failed in compilation */
2840 retval = PL_stack_sp - (PL_stack_base + oldmark);
2841 if (!(flags & G_KEEPERR)) {
2849 /* my_exit() was called */
2850 SET_CURSTASH(PL_defstash);
2854 assert(0); /* NOTREACHED */
2857 PL_restartjmpenv = NULL;
2858 PL_op = PL_restartop;
2863 PL_stack_sp = PL_stack_base + oldmark;
2864 if ((flags & G_WANT) == G_ARRAY)
2868 *++PL_stack_sp = &PL_sv_undef;
2874 if (flags & G_DISCARD) {
2875 PL_stack_sp = PL_stack_base + oldmark;
2885 =for apidoc p||eval_pv
2887 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2893 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2895 SV* sv = newSVpv(p, 0);
2897 PERL_ARGS_ASSERT_EVAL_PV;
2899 eval_sv(sv, G_SCALAR);
2908 /* just check empty string or undef? */
2909 if (croak_on_error) {
2910 SV * const errsv = ERRSV;
2911 if(SvTRUE_NN(errsv))
2912 /* replace with croak_sv? */
2913 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2919 /* Require a module. */
2922 =head1 Embedding Functions
2924 =for apidoc p||require_pv
2926 Tells Perl to C<require> the file named by the string argument. It is
2927 analogous to the Perl code C<eval "require '$file'">. It's even
2928 implemented that way; consider using load_module instead.
2933 Perl_require_pv(pTHX_ const char *pv)
2938 PERL_ARGS_ASSERT_REQUIRE_PV;
2940 PUSHSTACKi(PERLSI_REQUIRE);
2941 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2942 eval_sv(sv_2mortal(sv), G_DISCARD);
2947 S_usage(pTHX) /* XXX move this out into a module ? */
2949 /* This message really ought to be max 23 lines.
2950 * Removed -h because the user already knows that option. Others? */
2952 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2953 minimum of 509 character string literals. */
2954 static const char * const usage_msg[] = {
2955 " -0[octal] specify record separator (\\0, if no argument)\n"
2956 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2957 " -C[number/list] enables the listed Unicode features\n"
2958 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2959 " -d[:debugger] run program under debugger\n"
2960 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2961 " -e program one line of program (several -e's allowed, omit programfile)\n"
2962 " -E program like -e, but enables all optional features\n"
2963 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2964 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2965 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2966 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2967 " -l[octal] enable line ending processing, specifies line terminator\n"
2968 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2969 " -n assume \"while (<>) { ... }\" loop around program\n"
2970 " -p assume loop like -n but print line also, like sed\n"
2971 " -s enable rudimentary parsing for switches after programfile\n"
2972 " -S look for programfile using PATH environment variable\n",
2973 " -t enable tainting warnings\n"
2974 " -T enable tainting checks\n"
2975 " -u dump core after parsing program\n"
2976 " -U allow unsafe operations\n"
2977 " -v print version, patchlevel and license\n"
2978 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2979 " -w enable many useful warnings\n"
2980 " -W enable all warnings\n"
2981 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2982 " -X disable all warnings\n"
2984 "Run 'perldoc perl' for more help with Perl.\n\n",
2987 const char * const *p = usage_msg;
2988 PerlIO *out = PerlIO_stdout();
2991 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2994 PerlIO_puts(out, *p++);
2998 /* convert a string of -D options (or digits) into an int.
2999 * sets *s to point to the char after the options */
3003 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3005 static const char * const usage_msgd[] = {
3006 " Debugging flag values: (see also -d)\n"
3007 " p Tokenizing and parsing (with v, displays parse stack)\n"
3008 " s Stack snapshots (with v, displays all stacks)\n"
3009 " l Context (loop) stack processing\n"
3010 " t Trace execution\n"
3011 " o Method and overloading resolution\n",
3012 " c String/numeric conversions\n"
3013 " P Print profiling info, source file input state\n"
3014 " m Memory and SV allocation\n"
3015 " f Format processing\n"
3016 " r Regular expression parsing and execution\n"
3017 " x Syntax tree dump\n",
3018 " u Tainting checks\n"
3019 " H Hash dump -- usurps values()\n"
3020 " X Scratchpad allocation\n"
3022 " S Op slab allocation\n"
3024 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3025 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3026 " v Verbose: use in conjunction with other flags\n"
3027 " C Copy On Write\n"
3028 " A Consistency checks on internal structures\n"
3029 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3030 " M trace smart match resolution\n"
3031 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3032 " L trace some locale setting information--for Perl core development\n",
3037 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3040 /* if adding extra options, remember to update DEBUG_MASK */
3041 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3043 for (; isWORDCHAR(**s); (*s)++) {
3044 const char * const d = strchr(debopts,**s);
3046 i |= 1 << (d - debopts);
3047 else if (ckWARN_d(WARN_DEBUGGING))
3048 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3049 "invalid option -D%c, use -D'' to see choices\n", **s);
3052 else if (isDIGIT(**s)) {
3054 i = grok_atou(*s, &e);
3057 for (; isWORDCHAR(**s); (*s)++) ;
3059 else if (givehelp) {
3060 const char *const *p = usage_msgd;
3061 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3064 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3065 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3066 "-Dp not implemented on this platform\n");
3072 /* This routine handles any switches that can be given during run */
3075 Perl_moreswitches(pTHX_ const char *s)
3079 const char option = *s; /* used to remember option in -m/-M code */
3081 PERL_ARGS_ASSERT_MORESWITCHES;
3089 SvREFCNT_dec(PL_rs);
3090 if (s[1] == 'x' && s[2]) {
3091 const char *e = s+=2;
3097 flags = PERL_SCAN_SILENT_ILLDIGIT;
3098 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3099 if (s + numlen < e) {
3100 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3104 PL_rs = newSVpvs("");
3105 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3106 tmps = (U8*)SvPVX(PL_rs);
3107 uvchr_to_utf8(tmps, rschar);
3108 SvCUR_set(PL_rs, UNISKIP(rschar));
3113 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3114 if (rschar & ~((U8)~0))
3115 PL_rs = &PL_sv_undef;
3116 else if (!rschar && numlen >= 2)
3117 PL_rs = newSVpvs("");
3119 char ch = (char)rschar;
3120 PL_rs = newSVpvn(&ch, 1);
3123 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3128 PL_unicode = parse_unicode_opts( (const char **)&s );
3129 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3137 while (*s && !isSPACE(*s)) ++s;
3138 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3150 forbid_setid('d', FALSE);
3153 /* -dt indicates to the debugger that threads will be used */
3154 if (*s == 't' && !isWORDCHAR(s[1])) {
3156 my_setenv("PERL5DB_THREADED", "1");
3159 /* The following permits -d:Mod to accepts arguments following an =
3160 in the fashion that -MSome::Mod does. */
3161 if (*s == ':' || *s == '=') {
3168 sv = newSVpvs("no Devel::");
3170 sv = newSVpvs("use Devel::");
3174 end = s + strlen(s);
3176 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3177 while(isWORDCHAR(*s) || *s==':') ++s;
3179 sv_catpvn(sv, start, end - start);
3181 sv_catpvn(sv, start, s-start);
3182 /* Don't use NUL as q// delimiter here, this string goes in the
3184 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3187 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3191 PL_perldb = PERLDB_ALL;
3198 forbid_setid('D', FALSE);
3200 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3201 #else /* !DEBUGGING */
3202 if (ckWARN_d(WARN_DEBUGGING))
3203 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3204 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3205 for (s++; isWORDCHAR(*s); s++) ;
3212 Safefree(PL_inplace);
3213 #if defined(__CYGWIN__) /* do backup extension automagically */
3214 if (*(s+1) == '\0') {
3215 PL_inplace = savepvs(".bak");
3218 #endif /* __CYGWIN__ */
3220 const char * const start = ++s;
3221 while (*s && !isSPACE(*s))
3224 PL_inplace = savepvn(start, s - start);
3228 if (*s == '-') /* Additional switches on #! line. */
3232 case 'I': /* -I handled both here and in parse_body() */
3233 forbid_setid('I', FALSE);
3235 while (*s && isSPACE(*s))
3240 /* ignore trailing spaces (possibly followed by other switches) */
3242 for (e = p; *e && !isSPACE(*e); e++) ;
3246 } while (*p && *p != '-');
3248 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3254 Perl_croak(aTHX_ "No directory specified for -I");
3260 SvREFCNT_dec(PL_ors_sv);
3266 PL_ors_sv = newSVpvs("\n");
3267 numlen = 3 + (*s == '0');
3268 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3272 if (RsPARA(PL_rs)) {
3273 PL_ors_sv = newSVpvs("\n\n");
3276 PL_ors_sv = newSVsv(PL_rs);
3281 forbid_setid('M', FALSE); /* XXX ? */
3284 forbid_setid('m', FALSE); /* XXX ? */
3289 const char *use = "use ";
3291 /* -M-foo == 'no foo' */
3292 /* Leading space on " no " is deliberate, to make both
3293 possibilities the same length. */
3294 if (*s == '-') { use = " no "; ++s; }
3295 sv = newSVpvn(use,4);
3297 /* We allow -M'Module qw(Foo Bar)' */
3298 while(isWORDCHAR(*s) || *s==':') {
3307 Perl_croak(aTHX_ "Module name required with -%c option",
3310 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3311 "contains single ':'",
3312 (int)(s - start), start, option);
3313 end = s + strlen(s);
3315 sv_catpvn(sv, start, end - start);
3316 if (option == 'm') {
3318 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3319 sv_catpvs( sv, " ()");
3322 sv_catpvn(sv, start, s-start);
3323 /* Use NUL as q''-delimiter. */
3324 sv_catpvs(sv, " split(/,/,q\0");
3326 sv_catpvn(sv, s, end - s);
3327 sv_catpvs(sv, "\0)");
3330 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3333 Perl_croak(aTHX_ "Missing argument to -%c", option);
3344 forbid_setid('s', FALSE);
3345 PL_doswitches = TRUE;
3350 #if defined(SILENT_NO_TAINT_SUPPORT)
3351 /* silently ignore */
3352 #elif defined(NO_TAINT_SUPPORT)
3353 Perl_croak_nocontext("This perl was compiled without taint support. "
3354 "Cowardly refusing to run with -t or -T flags");
3362 PL_do_undump = TRUE;
3372 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3373 PL_dowarn |= G_WARN_ON;
3378 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3379 if (!specialWARN(PL_compiling.cop_warnings))
3380 PerlMemShared_free(PL_compiling.cop_warnings);
3381 PL_compiling.cop_warnings = pWARN_ALL ;
3385 PL_dowarn = G_WARN_ALL_OFF;
3386 if (!specialWARN(PL_compiling.cop_warnings))
3387 PerlMemShared_free(PL_compiling.cop_warnings);
3388 PL_compiling.cop_warnings = pWARN_NONE ;
3395 if (s[0] == '-') /* Additional switches on #! line. */
3400 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3406 #ifdef ALTERNATE_SHEBANG
3407 case 'S': /* OS/2 needs -S on "extproc" line. */
3410 case 'e': case 'f': case 'x': case 'E':
3411 #ifndef ALTERNATE_SHEBANG
3415 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3418 "Unrecognized switch: -%.1s (-h will show valid options)",s
3428 PerlIO * PIO_stdout;
3430 const char * const level_str = "v" PERL_VERSION_STRING;
3431 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3432 #ifdef PERL_PATCHNUM
3434 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3435 static const char num [] = PERL_PATCHNUM "*";
3437 static const char num [] = PERL_PATCHNUM;
3440 const STRLEN num_len = sizeof(num)-1;
3441 /* A very advanced compiler would fold away the strnEQ
3442 and this whole conditional, but most (all?) won't do it.
3443 SV level could also be replaced by with preprocessor
3446 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3447 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3448 of the interp so it might contain format characters
3450 level = newSVpvn(num, num_len);
3452 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3456 SV* level = newSVpvn(level_str, level_len);
3457 #endif /* #ifdef PERL_PATCHNUM */
3458 PIO_stdout = PerlIO_stdout();
3459 PerlIO_printf(PIO_stdout,
3460 "\nThis is perl " STRINGIFY(PERL_REVISION)
3461 ", version " STRINGIFY(PERL_VERSION)
3462 ", subversion " STRINGIFY(PERL_SUBVERSION)
3463 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3465 SvREFCNT_dec_NN(level);
3467 #if defined(LOCAL_PATCH_COUNT)
3468 if (LOCAL_PATCH_COUNT > 0)
3469 PerlIO_printf(PIO_stdout,
3470 "\n(with %d registered patch%s, "
3471 "see perl -V for more detail)",
3473 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3476 PerlIO_printf(PIO_stdout,
3477 "\n\nCopyright 1987-2014, Larry Wall\n");
3479 PerlIO_printf(PIO_stdout,
3480 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3483 PerlIO_printf(PIO_stdout,
3484 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3485 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3488 PerlIO_printf(PIO_stdout,
3489 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3490 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3493 PerlIO_printf(PIO_stdout,
3494 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3497 PerlIO_printf(PIO_stdout,
3498 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3501 PerlIO_printf(PIO_stdout,
3502 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3505 PerlIO_printf(PIO_stdout,
3506 "WINCE port by Rainer Keuchel, 2001-2002\n"
3507 "Built on " __DATE__ " " __TIME__ "\n\n");
3510 #ifdef __SYMBIAN32__
3511 PerlIO_printf(PIO_stdout,
3512 "Symbian port by Nokia, 2004-2005\n");
3514 #ifdef BINARY_BUILD_NOTICE
3515 BINARY_BUILD_NOTICE;
3517 PerlIO_printf(PIO_stdout,
3519 Perl may be copied only under the terms of either the Artistic License or the\n\
3520 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3521 Complete documentation for Perl, including FAQ lists, should be found on\n\
3522 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3523 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3527 /* compliments of Tom Christiansen */
3529 /* unexec() can be found in the Gnu emacs distribution */
3530 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3533 #include <lib$routines.h>
3537 Perl_my_unexec(pTHX)
3540 SV * prog = newSVpv(BIN_EXP, 0);
3541 SV * file = newSVpv(PL_origfilename, 0);
3545 sv_catpvs(prog, "/perl");
3546 sv_catpvs(file, ".perldump");
3548 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3549 /* unexec prints msg to stderr in case of failure */
3550 PerlProc_exit(status);
3552 PERL_UNUSED_CONTEXT;
3554 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3555 # elif defined(WIN32) || defined(__CYGWIN__)
3556 Perl_croak_nocontext("dump is not supported");
3558 ABORT(); /* for use with undump */
3563 /* initialize curinterp */
3568 # define PERLVAR(prefix,var,type)
3569 # define PERLVARA(prefix,var,n,type)
3570 # if defined(PERL_IMPLICIT_CONTEXT)
3571 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3572 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3574 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3575 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3577 # include "intrpvar.h"
3583 # define PERLVAR(prefix,var,type)
3584 # define PERLVARA(prefix,var,n,type)
3585 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3586 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3587 # include "intrpvar.h"
3597 S_init_main_stash(pTHX)
3601 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3602 /* We know that the string "main" will be in the global shared string
3603 table, so it's a small saving to use it rather than allocate another
3605 PL_curstname = newSVpvs_share("main");
3606 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3607 /* If we hadn't caused another reference to "main" to be in the shared
3608 string table above, then it would be worth reordering these two,
3609 because otherwise all we do is delete "main" from it as a consequence
3610 of the SvREFCNT_dec, only to add it again with hv_name_set */
3611 SvREFCNT_dec(GvHV(gv));
3612 hv_name_set(PL_defstash, "main", 4, 0);
3613 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3615 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3617 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3618 GvMULTI_on(PL_incgv);
3619 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3620 SvREFCNT_inc_simple_void(PL_hintgv);
3621 GvMULTI_on(PL_hintgv);
3622 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3623 SvREFCNT_inc_simple_void(PL_defgv);
3624 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3625 SvREFCNT_inc_simple_void(PL_errgv);
3626 GvMULTI_on(PL_errgv);
3627 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3628 SvREFCNT_inc_simple_void(PL_replgv);
3629 GvMULTI_on(PL_replgv);
3630 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3631 #ifdef PERL_DONT_CREATE_GVSV
3634 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3636 SET_CURSTASH(PL_defstash);
3637 CopSTASH_set(&PL_compiling, PL_defstash);
3638 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3639 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3641 /* We must init $/ before switches are processed. */
3642 sv_setpvs(get_sv("/", GV_ADD), "\n");
3646 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3649 PerlIO *rsfp = NULL;
3653 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3656 PL_origfilename = savepvs("-e");
3659 /* if find_script() returns, it returns a malloc()-ed value */
3660 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3662 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3663 const char *s = scriptname + 8;
3665 fdscript = grok_atou(s, &e);
3669 * Tell apart "normal" usage of fdscript, e.g.
3670 * with bash on FreeBSD:
3671 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3672 * from usage in suidperl.
3673 * Does any "normal" usage leave garbage after the number???
3674 * Is it a mistake to use a similar /dev/fd/ construct for
3679 * Be supersafe and do some sanity-checks.
3680 * Still, can we be sure we got the right thing?
3683 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3686 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3688 scriptname = savepv(s + 1);
3689 Safefree(PL_origfilename);
3690 PL_origfilename = (char *)scriptname;
3695 CopFILE_free(PL_curcop);
3696 CopFILE_set(PL_curcop, PL_origfilename);
3697 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3698 scriptname = (char *)"";
3699 if (fdscript >= 0) {
3700 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3702 else if (!*scriptname) {
3703 forbid_setid(0, *suidscript);
3707 #ifdef FAKE_BIT_BUCKET
3708 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3709 * is called) and still have the "-e" work. (Believe it or not,
3710 * a /dev/null is required for the "-e" to work because source
3711 * filter magic is used to implement it. ) This is *not* a general
3712 * replacement for a /dev/null. What we do here is create a temp
3713 * file (an empty file), open up that as the script, and then
3714 * immediately close and unlink it. Close enough for jazz. */
3715 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3716 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3717 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3718 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3719 FAKE_BIT_BUCKET_TEMPLATE
3721 const char * const err = "Failed to create a fake bit bucket";
3722 if (strEQ(scriptname, BIT_BUCKET)) {
3723 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3724 int old_umask = umask(0600);
3725 int tmpfd = mkstemp(tmpname);
3728 scriptname = tmpname;
3731 Perl_croak(aTHX_ err);
3734 scriptname = mktemp(tmpname);
3736 Perl_croak(aTHX_ err);
3741 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3742 #ifdef FAKE_BIT_BUCKET
3743 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3744 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3745 && strlen(scriptname) == sizeof(tmpname) - 1) {
3748 scriptname = BIT_BUCKET;
3752 /* PSz 16 Sep 03 Keep neat error message */
3754 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3756 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3757 CopFILE(PL_curcop), Strerror(errno));
3759 fd = PerlIO_fileno(rsfp);
3760 #if defined(HAS_FCNTL) && defined(F_SETFD)
3762 /* ensure close-on-exec */
3763 if (fcntl(fd, F_SETFD, 1) < 0) {
3764 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3765 CopFILE(PL_curcop), Strerror(errno));
3771 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3772 && S_ISDIR(tmpstatbuf.st_mode)))
3773 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3781 * I_SYSSTATVFS HAS_FSTATVFS
3783 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3784 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3785 * here so that metaconfig picks them up. */
3788 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3789 /* Don't even need this function. */
3792 S_validate_suid(pTHX_ PerlIO *rsfp)
3794 const Uid_t my_uid = PerlProc_getuid();
3795 const Uid_t my_euid = PerlProc_geteuid();
3796 const Gid_t my_gid = PerlProc_getgid();
3797 const Gid_t my_egid = PerlProc_getegid();
3799 PERL_ARGS_ASSERT_VALIDATE_SUID;
3801 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3803 int fd = PerlIO_fileno(rsfp);
3805 Perl_croak(aTHX_ "Illegal suidscript");
3807 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3808 Perl_croak(aTHX_ "Illegal suidscript");
3811 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3813 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3816 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3817 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3818 /* not set-id, must be wrapped */
3821 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3824 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3829 PERL_ARGS_ASSERT_FIND_BEGINNING;
3831 /* skip forward in input to the real script? */
3834 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3835 Perl_croak(aTHX_ "No Perl script found in input\n");
3837 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3838 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3839 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3841 while (*s == ' ' || *s == '\t') s++;
3843 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3844 || s2[-1] == '_') s2--;
3845 if (strnEQ(s2-4,"perl",4))
3846 while ((s = moreswitches(s)))
3855 /* no need to do anything here any more if we don't
3857 #ifndef NO_TAINT_SUPPORT
3858 const Uid_t my_uid = PerlProc_getuid();
3859 const Uid_t my_euid = PerlProc_geteuid();
3860 const Gid_t my_gid = PerlProc_getgid();
3861 const Gid_t my_egid = PerlProc_getegid();
3863 PERL_UNUSED_CONTEXT;
3865 /* Should not happen: */
3866 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3867 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3871 * Should go by suidscript, not uid!=euid: why disallow
3872 * system("ls") in scripts run from setuid things?
3873 * Or, is this run before we check arguments and set suidscript?
3874 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3875 * (We never have suidscript, can we be sure to have fdscript?)
3876 * Or must then go by UID checks? See comments in forbid_setid also.
3880 /* This is used very early in the lifetime of the program,
3881 * before even the options are parsed, so PL_tainting has
3882 * not been initialized properly. */
3884 Perl_doing_taint(int argc, char *argv[], char *envp[])
3886 #ifndef PERL_IMPLICIT_SYS
3887 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3888 * before we have an interpreter-- and the whole point of this
3889 * function is to be called at such an early stage. If you are on
3890 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3891 * "tainted because running with altered effective ids', you'll
3892 * have to add your own checks somewhere in here. The two most
3893 * known samples of 'implicitness' are Win32 and NetWare, neither
3894 * of which has much of concept of 'uids'. */
3895 Uid_t uid = PerlProc_getuid();
3896 Uid_t euid = PerlProc_geteuid();
3897 Gid_t gid = PerlProc_getgid();
3898 Gid_t egid = PerlProc_getegid();
3905 if (uid && (euid != uid || egid != gid))
3907 #endif /* !PERL_IMPLICIT_SYS */
3908 /* This is a really primitive check; environment gets ignored only
3909 * if -T are the first chars together; otherwise one gets
3910 * "Too late" message. */
3911 if ( argc > 1 && argv[1][0] == '-'
3912 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3917 /* Passing the flag as a single char rather than a string is a slight space
3918 optimisation. The only message that isn't /^-.$/ is
3919 "program input from stdin", which is substituted in place of '\0', which
3920 could never be a command line flag. */
3922 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3924 char string[3] = "-x";
3925 const char *message = "program input from stdin";
3927 PERL_UNUSED_CONTEXT;
3933 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3934 if (PerlProc_getuid() != PerlProc_geteuid())
3935 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3936 if (PerlProc_getgid() != PerlProc_getegid())
3937 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3938 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3940 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3944 Perl_init_dbargs(pTHX)
3946 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3951 /* Someone has already created it.
3952 It might have entries, and if we just turn off AvREAL(), they will
3953 "leak" until global destruction. */
3955 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3956 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3958 AvREIFY_only(PL_dbargs);
3962 Perl_init_debugger(pTHX)
3964 HV * const ostash = PL_curstash;
3966 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3968 Perl_init_dbargs(aTHX);
3969 PL_DBgv = MUTABLE_GV(
3970 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3972 PL_DBline = MUTABLE_GV(
3973 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3975 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3976 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3978 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3979 if (!SvIOK(PL_DBsingle))
3980 sv_setiv(PL_DBsingle, 0);
3981 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3982 if (!SvIOK(PL_DBtrace))
3983 sv_setiv(PL_DBtrace, 0);
3984 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3985 if (!SvIOK(PL_DBsignal))
3986 sv_setiv(PL_DBsignal, 0);
3987 SvREFCNT_dec(PL_curstash);
3988 PL_curstash = ostash;
3991 #ifndef STRESS_REALLOC
3992 #define REASONABLE(size) (size)
3993 #define REASONABLE_but_at_least(size,min) (size)
3995 #define REASONABLE(size) (1) /* unreasonable */
3996 #define REASONABLE_but_at_least(size,min) (min)
4000 Perl_init_stacks(pTHX)
4002 /* start with 128-item stack and 8K cxstack */
4003 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4004 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4005 PL_curstackinfo->si_type = PERLSI_MAIN;
4006 PL_curstack = PL_curstackinfo->si_stack;
4007 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4009 PL_stack_base = AvARRAY(PL_curstack);
4010 PL_stack_sp = PL_stack_base;
4011 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4013 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4016 PL_tmps_max = REASONABLE(128);
4018 Newx(PL_markstack,REASONABLE(32),I32);
4019 PL_markstack_ptr = PL_markstack;
4020 PL_markstack_max = PL_markstack + REASONABLE(32);
4024 Newx(PL_scopestack,REASONABLE(32),I32);
4026 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4028 PL_scopestack_ix = 0;
4029 PL_scopestack_max = REASONABLE(32);
4031 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4032 PL_savestack_ix = 0;
4033 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4041 while (PL_curstackinfo->si_next)
4042 PL_curstackinfo = PL_curstackinfo->si_next;
4043 while (PL_curstackinfo) {
4044 PERL_SI *p = PL_curstackinfo->si_prev;
4045 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4046 Safefree(PL_curstackinfo->si_cxstack);
4047 Safefree(PL_curstackinfo);
4048 PL_curstackinfo = p;
4050 Safefree(PL_tmps_stack);
4051 Safefree(PL_markstack);
4052 Safefree(PL_scopestack);
4054 Safefree(PL_scopestack_name);
4056 Safefree(PL_savestack);
4060 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4062 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4063 AV *const isa = GvAVn(gv);
4066 PERL_ARGS_ASSERT_POPULATE_ISA;
4068 if(AvFILLp(isa) != -1)
4071 /* NOTE: No support for tied ISA */
4073 va_start(args, len);
4075 const char *const parent = va_arg(args, const char*);
4080 parent_len = va_arg(args, size_t);
4082 /* Arguments are supplied with a trailing :: */
4083 assert(parent_len > 2);
4084 assert(parent[parent_len - 1] == ':');
4085 assert(parent[parent_len - 2] == ':');
4086 av_push(isa, newSVpvn(parent, parent_len - 2));
4087 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4094 S_init_predump_symbols(pTHX)
4099 sv_setpvs(get_sv("\"", GV_ADD), " ");
4100 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4103 /* Historically, PVIOs were blessed into IO::Handle, unless
4104 FileHandle was loaded, in which case they were blessed into
4105 that. Action at a distance.
4106 However, if we simply bless into IO::Handle, we break code
4107 that assumes that PVIOs will have (among others) a seek
4108 method. IO::File inherits from IO::Handle and IO::Seekable,
4109 and provides the needed methods. But if we simply bless into
4110 it, then we break code that assumed that by loading
4111 IO::Handle, *it* would work.
4112 So a compromise is to set up the correct @IO::File::ISA,
4113 so that code that does C<use IO::Handle>; will still work.
4116 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4117 STR_WITH_LEN("IO::Handle::"),
4118 STR_WITH_LEN("IO::Seekable::"),
4119 STR_WITH_LEN("Exporter::"),
4122 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4123 GvMULTI_on(PL_stdingv);
4124 io = GvIOp(PL_stdingv);
4125 IoTYPE(io) = IoTYPE_RDONLY;
4126 IoIFP(io) = PerlIO_stdin();
4127 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4129 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4131 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4134 IoTYPE(io) = IoTYPE_WRONLY;
4135 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4137 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4139 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4141 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4142 GvMULTI_on(PL_stderrgv);
4143 io = GvIOp(PL_stderrgv);
4144 IoTYPE(io) = IoTYPE_WRONLY;
4145 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4146 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4148 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4150 PL_statname = newSVpvs(""); /* last filename we did stat on */
4154 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4156 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4158 argc--,argv++; /* skip name of script */
4159 if (PL_doswitches) {
4160 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4164 if (argv[0][1] == '-' && !argv[0][2]) {
4168 if ((s = strchr(argv[0], '='))) {
4169 const char *const start_name = argv[0] + 1;
4170 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4171 TRUE, SVt_PV)), s + 1);
4174 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4177 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4178 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4179 GvMULTI_on(PL_argvgv);
4180 av_clear(GvAVn(PL_argvgv));
4181 for (; argc > 0; argc--,argv++) {
4182 SV * const sv = newSVpv(argv[0],0);
4183 av_push(GvAV(PL_argvgv),sv);
4184 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4185 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4188 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4189 (void)sv_utf8_decode(sv);
4193 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4194 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4195 "-i used with no filenames on the command line, "
4196 "reading from STDIN");
4200 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4207 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4209 PL_toptarget = newSV_type(SVt_PVIV);
4210 sv_setpvs(PL_toptarget, "");
4211 PL_bodytarget = newSV_type(SVt_PVIV);
4212 sv_setpvs(PL_bodytarget, "");
4213 PL_formtarget = PL_bodytarget;
4217 init_argv_symbols(argc,argv);
4219 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4220 sv_setpv(GvSV(tmpgv),PL_origfilename);
4222 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4224 bool env_is_not_environ;
4225 SvREFCNT_inc_simple_void_NN(PL_envgv);
4226 GvMULTI_on(PL_envgv);
4227 hv = GvHVn(PL_envgv);
4228 hv_magic(hv, NULL, PERL_MAGIC_env);
4230 #ifdef USE_ENVIRON_ARRAY
4231 /* Note that if the supplied env parameter is actually a copy
4232 of the global environ then it may now point to free'd memory
4233 if the environment has been modified since. To avoid this
4234 problem we treat env==NULL as meaning 'use the default'
4238 env_is_not_environ = env != environ;
4239 if (env_is_not_environ
4240 # ifdef USE_ITHREADS
4241 && PL_curinterp == aTHX
4250 for (; *env; env++) {
4253 if (!(s = strchr(old_var,'=')) || s == old_var)
4256 #if defined(MSDOS) && !defined(DJGPP)
4258 (void)strupr(old_var);
4261 sv = newSVpv(s+1, 0);
4262 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4263 if (env_is_not_environ)
4267 #endif /* USE_ENVIRON_ARRAY */
4268 #endif /* !PERL_MICRO */
4272 /* touch @F array to prevent spurious warnings 20020415 MJD */
4274 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4279 S_init_perllib(pTHX)
4282 const char *perl5lib = NULL;
4285 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4289 if (!TAINTING_get) {
4291 perl5lib = PerlEnv_getenv("PERL5LIB");
4293 * It isn't possible to delete an environment variable with
4294 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4295 * case we treat PERL5LIB as undefined if it has a zero-length value.
4297 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4298 if (perl5lib && *perl5lib != '\0')
4302 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4304 s = PerlEnv_getenv("PERLLIB");
4306 incpush_use_sep(s, 0, 0);
4309 /* Treat PERL5?LIB as a possible search list logical name -- the
4310 * "natural" VMS idiom for a Unix path string. We allow each
4311 * element to be a set of |-separated directories for compatibility.
4315 if (my_trnlnm("PERL5LIB",buf,0))
4317 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4318 } while (my_trnlnm("PERL5LIB",buf,++idx));
4320 while (my_trnlnm("PERLLIB",buf,idx++))
4321 incpush_use_sep(buf, 0, 0);
4326 #ifndef PERL_IS_MINIPERL
4327 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4328 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4330 /* Use the ~-expanded versions of APPLLIB (undocumented),
4331 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4334 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4335 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4339 /* sitearch is always relative to sitelib on Windows for
4340 * DLL-based path intuition to work correctly */
4341 # if !defined(WIN32)
4342 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4343 INCPUSH_CAN_RELOCATE);
4349 /* this picks up sitearch as well */
4350 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4352 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4354 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4358 #ifdef PERL_VENDORARCH_EXP
4359 /* vendorarch is always relative to vendorlib on Windows for
4360 * DLL-based path intuition to work correctly */
4361 # if !defined(WIN32)
4362 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4363 INCPUSH_CAN_RELOCATE);
4367 #ifdef PERL_VENDORLIB_EXP
4369 /* this picks up vendorarch as well */
4370 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4372 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4374 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4375 INCPUSH_CAN_RELOCATE);
4380 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4384 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4388 s = win32_get_privlib(PERL_FS_VERSION, &len);
4390 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4393 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4395 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4399 #ifdef PERL_OTHERLIBDIRS
4400 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4401 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4402 |INCPUSH_CAN_RELOCATE);
4405 if (!TAINTING_get) {
4408 * It isn't possible to delete an environment variable with
4409 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4410 * case we treat PERL5LIB as undefined if it has a zero-length value.
4412 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4413 if (perl5lib && *perl5lib != '\0')
4417 incpush_use_sep(perl5lib, 0,
4418 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4420 /* Treat PERL5?LIB as a possible search list logical name -- the
4421 * "natural" VMS idiom for a Unix path string. We allow each
4422 * element to be a set of |-separated directories for compatibility.
4426 if (my_trnlnm("PERL5LIB",buf,0))
4428 incpush_use_sep(buf, 0,
4429 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4430 } while (my_trnlnm("PERL5LIB",buf,++idx));
4434 /* Use the ~-expanded versions of APPLLIB (undocumented),
4435 SITELIB and VENDORLIB for older versions
4438 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4439 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4442 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4443 /* Search for version-specific dirs below here */
4444 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4445 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4449 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4450 /* Search for version-specific dirs below here */
4451 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4452 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4455 #ifdef PERL_OTHERLIBDIRS
4456 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4457 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4458 |INCPUSH_CAN_RELOCATE);
4460 #endif /* !PERL_IS_MINIPERL */
4463 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4466 #if defined(DOSISH) || defined(__SYMBIAN32__)
4467 # define PERLLIB_SEP ';'
4470 # define PERLLIB_SEP '|'
4472 # define PERLLIB_SEP ':'
4475 #ifndef PERLLIB_MANGLE
4476 # define PERLLIB_MANGLE(s,n) (s)
4479 #ifndef PERL_IS_MINIPERL
4480 /* Push a directory onto @INC if it exists.
4481 Generate a new SV if we do this, to save needing to copy the SV we push
4484 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4488 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4490 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4491 S_ISDIR(tmpstatbuf.st_mode)) {
4493 dir = newSVsv(stem);
4495 /* Truncate dir back to stem. */
4496 SvCUR_set(dir, SvCUR(stem));
4503 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4505 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4508 PERL_ARGS_ASSERT_MAYBERELOCATE;
4511 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4512 defined to so something (in os2/os2.c), but the code has been
4513 this way, ignoring any possible changed of length, since
4514 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4516 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4522 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4524 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4525 sv_usepvn(libdir,unix,len);
4528 PerlIO_printf(Perl_error_log,
4529 "Failed to unixify @INC element \"%s\"\n",
4530 SvPV_nolen_const(libdir));
4534 /* Do the if() outside the #ifdef to avoid warnings about an unused
4537 #ifdef PERL_RELOCATABLE_INC
4539 * Relocatable include entries are marked with a leading .../
4542 * 0: Remove that leading ".../"
4543 * 1: Remove trailing executable name (anything after the last '/')
4544 * from the perl path to give a perl prefix
4546 * While the @INC element starts "../" and the prefix ends with a real
4547 * directory (ie not . or ..) chop that real directory off the prefix
4548 * and the leading "../" from the @INC element. ie a logical "../"
4550 * Finally concatenate the prefix and the remainder of the @INC element
4551 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4552 * generates /usr/local/lib/perl5
4554 const char *libpath = SvPVX(libdir);
4555 STRLEN libpath_len = SvCUR(libdir);
4556 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4558 SV * const caret_X = get_sv("\030", 0);
4559 /* Going to use the SV just as a scratch buffer holding a C
4565 /* $^X is *the* source of taint if tainting is on, hence
4566 SvPOK() won't be true. */
4568 assert(SvPOKp(caret_X));
4569 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4571 /* Firstly take off the leading .../
4572 If all else fail we'll do the paths relative to the current
4574 sv_chop(libdir, libpath + 4);
4575 /* Don't use SvPV as we're intentionally bypassing taining,
4576 mortal copies that the mg_get of tainting creates, and
4577 corruption that seems to come via the save stack.
4578 I guess that the save stack isn't correctly set up yet. */
4579 libpath = SvPVX(libdir);
4580 libpath_len = SvCUR(libdir);
4582 /* This would work more efficiently with memrchr, but as it's
4583 only a GNU extension we'd need to probe for it and
4584 implement our own. Not hard, but maybe not worth it? */
4586 prefix = SvPVX(prefix_sv);
4587 lastslash = strrchr(prefix, '/');
4589 /* First time in with the *lastslash = '\0' we just wipe off
4590 the trailing /perl from (say) /usr/foo/bin/perl
4594 while ((*lastslash = '\0'), /* Do that, come what may. */
4595 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4596 && (lastslash = strrchr(prefix, '/')))) {
4597 if (lastslash[1] == '\0'
4598 || (lastslash[1] == '.'
4599 && (lastslash[2] == '/' /* ends "/." */
4600 || (lastslash[2] == '/'
4601 && lastslash[3] == '/' /* or "/.." */
4603 /* Prefix ends "/" or "/." or "/..", any of which
4604 are fishy, so don't do any more logical cleanup.
4608 /* Remove leading "../" from path */
4611 /* Next iteration round the loop removes the last
4612 directory name from prefix by writing a '\0' in
4613 the while clause. */
4615 /* prefix has been terminated with a '\0' to the correct
4616 length. libpath points somewhere into the libdir SV.
4617 We need to join the 2 with '/' and drop the result into
4619 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4620 SvREFCNT_dec(libdir);
4621 /* And this is the new libdir. */
4624 (PerlProc_getuid() != PerlProc_geteuid() ||
4625 PerlProc_getgid() != PerlProc_getegid())) {
4626 /* Need to taint relocated paths if running set ID */
4627 SvTAINTED_on(libdir);
4630 SvREFCNT_dec(prefix_sv);
4638 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4640 #ifndef PERL_IS_MINIPERL
4641 const U8 using_sub_dirs
4642 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4643 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4644 const U8 add_versioned_sub_dirs
4645 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4646 const U8 add_archonly_sub_dirs
4647 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4648 #ifdef PERL_INC_VERSION_LIST
4649 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4652 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4653 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4654 AV *const inc = GvAVn(PL_incgv);
4656 PERL_ARGS_ASSERT_INCPUSH;
4659 /* Could remove this vestigial extra block, if we don't mind a lot of
4660 re-indenting diff noise. */
4662 SV *const libdir = mayberelocate(dir, len, flags);
4663 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4664 arranged to unshift #! line -I onto the front of @INC. However,
4665 -I can add version and architecture specific libraries, and they
4666 need to go first. The old code assumed that it was always
4667 pushing. Hence to make it work, need to push the architecture
4668 (etc) libraries onto a temporary array, then "unshift" that onto
4669 the front of @INC. */
4670 #ifndef PERL_IS_MINIPERL
4671 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4674 * BEFORE pushing libdir onto @INC we may first push version- and
4675 * archname-specific sub-directories.
4677 if (using_sub_dirs) {
4678 SV *subdir = newSVsv(libdir);
4679 #ifdef PERL_INC_VERSION_LIST
4680 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4681 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4682 const char * const *incver;
4685 if (add_versioned_sub_dirs) {
4686 /* .../version/archname if -d .../version/archname */
4687 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4688 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4690 /* .../version if -d .../version */
4691 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4692 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4695 #ifdef PERL_INC_VERSION_LIST
4697 for (incver = incverlist; *incver; incver++) {
4698 /* .../xxx if -d .../xxx */
4699 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4700 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4705 if (add_archonly_sub_dirs) {
4706 /* .../archname if -d .../archname */
4707 sv_catpvs(subdir, "/" ARCHNAME);
4708 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4712 assert (SvREFCNT(subdir) == 1);
4713 SvREFCNT_dec(subdir);
4715 #endif /* !PERL_IS_MINIPERL */
4716 /* finally add this lib directory at the end of @INC */
4718 #ifdef PERL_IS_MINIPERL
4719 const Size_t extra = 0;
4721 Size_t extra = av_tindex(av) + 1;
4723 av_unshift(inc, extra + push_basedir);
4725 av_store(inc, extra, libdir);
4726 #ifndef PERL_IS_MINIPERL
4728 /* av owns a reference, av_store() expects to be donated a
4729 reference, and av expects to be sane when it's cleared.
4730 If I wanted to be naughty and wrong, I could peek inside the
4731 implementation of av_clear(), realise that it uses
4732 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4733 and so directly steal from it (with a memcpy() to inc, and
4734 then memset() to NULL them out. But people copy code from the
4735 core expecting it to be best practise, so let's use the API.
4736 Although studious readers will note that I'm not checking any
4738 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4743 else if (push_basedir) {
4744 av_push(inc, libdir);
4747 if (!push_basedir) {
4748 assert (SvREFCNT(libdir) == 1);
4749 SvREFCNT_dec(libdir);
4755 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4759 /* This logic has been broken out from S_incpush(). It may be possible to
4762 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4764 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4765 * argument to incpush_use_sep. This allows creation of relocatable
4766 * Perl distributions that patch the binary at install time. Those
4767 * distributions will have to provide their own relocation tools; this
4768 * is not a feature otherwise supported by core Perl.
4770 #ifndef PERL_RELOCATABLE_INCPUSH
4777 /* Break at all separators */
4778 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4780 /* skip any consecutive separators */
4782 /* Uncomment the next line for PATH semantics */
4783 /* But you'll need to write tests */
4784 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4786 incpush(p, (STRLEN)(s - p), flags);
4791 incpush(p, (STRLEN)(end - p), flags);
4796 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4799 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4805 PERL_ARGS_ASSERT_CALL_LIST;
4807 while (av_tindex(paramList) >= 0) {
4808 cv = MUTABLE_CV(av_shift(paramList));
4810 if (paramList == PL_beginav) {
4811 /* save PL_beginav for compiler */
4812 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4814 else if (paramList == PL_checkav) {
4815 /* save PL_checkav for compiler */
4816 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4818 else if (paramList == PL_unitcheckav) {
4819 /* save PL_unitcheckav for compiler */
4820 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4830 (void)SvPV_const(atsv, len);
4832 PL_curcop = &PL_compiling;
4833 CopLINE_set(PL_curcop, oldline);
4834 if (paramList == PL_beginav)
4835 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4837 Perl_sv_catpvf(aTHX_ atsv,
4838 "%s failed--call queue aborted",
4839 paramList == PL_checkav ? "CHECK"
4840 : paramList == PL_initav ? "INIT"
4841 : paramList == PL_unitcheckav ? "UNITCHECK"
4843 while (PL_scopestack_ix > oldscope)
4846 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4853 /* my_exit() was called */
4854 while (PL_scopestack_ix > oldscope)
4857 SET_CURSTASH(PL_defstash);
4858 PL_curcop = &PL_compiling;
4859 CopLINE_set(PL_curcop, oldline);
4862 assert(0); /* NOTREACHED */
4865 PL_curcop = &PL_compiling;
4866 CopLINE_set(PL_curcop, oldline);
4869 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4878 Perl_my_exit(pTHX_ U32 status)
4880 if (PL_exit_flags & PERL_EXIT_ABORT) {
4883 if (PL_exit_flags & PERL_EXIT_WARN) {
4884 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4885 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4886 PL_exit_flags &= ~PERL_EXIT_ABORT;
4896 STATUS_EXIT_SET(status);
4903 Perl_my_failure_exit(pTHX)
4906 /* We have been called to fall on our sword. The desired exit code
4907 * should be already set in STATUS_UNIX, but could be shifted over
4908 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4911 * If an error code has not been set, then force the issue.
4913 if (MY_POSIX_EXIT) {
4915 /* According to the die_exit.t tests, if errno is non-zero */
4916 /* It should be used for the error status. */
4918 if (errno == EVMSERR) {
4919 STATUS_NATIVE = vaxc$errno;
4922 /* According to die_exit.t tests, if the child_exit code is */
4923 /* also zero, then we need to exit with a code of 255 */
4924 if ((errno != 0) && (errno < 256))
4925 STATUS_UNIX_EXIT_SET(errno);
4926 else if (STATUS_UNIX < 255) {
4927 STATUS_UNIX_EXIT_SET(255);
4932 /* The exit code could have been set by $? or vmsish which
4933 * means that it may not have fatal set. So convert
4934 * success/warning codes to fatal with out changing
4935 * the POSIX status code. The severity makes VMS native
4936 * status handling work, while UNIX mode programs use the
4937 * the POSIX exit codes.
4939 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4940 STATUS_NATIVE &= STS$M_COND_ID;
4941 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4945 /* Traditionally Perl on VMS always expects a Fatal Error. */
4946 if (vaxc$errno & 1) {
4948 /* So force success status to failure */
4949 if (STATUS_NATIVE & 1)
4954 STATUS_UNIX = EINTR; /* In case something cares */
4959 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4961 /* Encode the severity code */
4962 severity = STATUS_NATIVE & STS$M_SEVERITY;
4963 STATUS_UNIX = (severity ? severity : 1) << 8;
4965 /* Perl expects this to be a fatal error */
4966 if (severity != STS$K_SEVERE)
4975 STATUS_UNIX_SET(errno);
4977 exitstatus = STATUS_UNIX >> 8;
4978 if (exitstatus & 255)
4979 STATUS_UNIX_SET(exitstatus);
4981 STATUS_UNIX_SET(255);
4984 if (PL_exit_flags & PERL_EXIT_ABORT) {
4987 if (PL_exit_flags & PERL_EXIT_WARN) {
4988 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4989 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
4990 PL_exit_flags &= ~PERL_EXIT_ABORT;
4996 S_my_exit_jump(pTHX)
4999 SvREFCNT_dec(PL_e_script);
5003 POPSTACK_TO(PL_mainstack);
5011 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5013 const char * const p = SvPVX_const(PL_e_script);
5014 const char *nl = strchr(p, '\n');
5016 PERL_UNUSED_ARG(idx);
5017 PERL_UNUSED_ARG(maxlen);
5019 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5021 filter_del(read_e_script);
5024 sv_catpvn(buf_sv, p, nl-p);
5025 sv_chop(PL_e_script, nl);
5031 * c-indentation-style: bsd
5033 * indent-tabs-mode: nil
5036 * ex: set ts=8 sts=4 sw=4 et: