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);
330 if (!PL_mmap_page_size) {
331 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 SETERRNO(0, SS_NORMAL);
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339 if ((long) PL_mmap_page_size < 0) {
341 SV * const error = ERRSV;
342 SvUPGRADE(error, SVt_PV);
343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
350 # ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
353 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
362 #endif /* HAS_MMAP */
364 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373 PL_registered_mros = newHV();
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
377 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
378 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
379 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
380 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
381 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
382 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
383 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
384 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
385 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
386 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
387 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
388 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
389 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
390 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
391 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
392 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
393 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
399 =for apidoc nothreadhook
401 Stub that provides thread hook for perl_destruct when there are
408 Perl_nothreadhook(pTHX)
414 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416 Perl_dump_sv_child(pTHX_ SV *sv)
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
421 union control_un control;
424 struct cmsghdr *cmptr;
426 unsigned char buffer[256];
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430 if(sock == -1 || debug_fd == -1)
433 PerlIO_flush(Perl_debug_log);
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
439 be open, the wait would be forever.) */
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
460 perror("Debug leaking scalars parent sendmsg failed");
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
468 /* Return protocol is
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
478 got = readv(sock, vec, 2);
481 perror("Debug leaking scalars parent read failed");
482 PerlIO_flush(PerlIO_stderr());
485 if(got < sizeof(returned_errno) + 1) {
486 perror("Debug leaking scalars parent short read");
487 PerlIO_flush(PerlIO_stderr());
492 got = read(sock, buffer + 1, *buffer);
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
509 returned_errno, Strerror(returned_errno));
515 =for apidoc perl_destruct
517 Shuts down a Perl interpreter. See L<perlembed>.
526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
528 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
533 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535 PERL_UNUSED_ARG(my_perl);
538 assert(PL_scopestack_ix == 1);
540 /* wait for all pseudo-forked children to finish */
541 PERL_WAIT_FOR_CHILDREN;
543 destruct_level = PL_perl_destruct_level;
544 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
546 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
552 i = grok_atou(s, NULL);
555 if (destruct_level < i) destruct_level = i;
557 #ifdef PERL_TRACK_MEMPOOL
558 /* RT #114496, for perl_free */
559 PL_perl_destruct_level = i;
565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
571 if (PL_endav && !PL_minus_c) {
572 PERL_SET_PHASE(PERL_PHASE_END);
573 call_list(PL_scopestack_ix, PL_endav);
579 assert(PL_scopestack_ix == 0);
581 /* Need to flush since END blocks can produce output */
584 #ifdef PERL_TRACE_OPS
585 /* If we traced all Perl OP usage, report and clean up */
586 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
587 for (i = 0; i <= OP_max; ++i) {
588 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
589 PL_op_exec_cnt[i] = 0;
591 /* Utility slot for easily doing little tracing experiments in the runloop: */
592 if (PL_op_exec_cnt[OP_max+1] != 0)
593 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
594 PerlIO_printf(Perl_debug_log, "\n");
598 if (PL_threadhook(aTHX)) {
599 /* Threads hook has vetoed further cleanup */
600 PL_veto_cleanup = TRUE;
604 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
605 if (destruct_level != 0) {
606 /* Fork here to create a child. Our child's job is to preserve the
607 state of scalars prior to destruction, so that we can instruct it
608 to dump any scalars that we later find have leaked.
609 There's no subtlety in this code - it assumes POSIX, and it doesn't
613 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
614 perror("Debug leaking scalars socketpair failed");
620 perror("Debug leaking scalars fork failed");
624 /* We are the child */
625 const int sock = fd[1];
626 const int debug_fd = PerlIO_fileno(Perl_debug_log);
629 /* Our success message is an integer 0, and a char 0 */
630 static const char success[sizeof(int) + 1] = {0};
634 /* We need to close all other file descriptors otherwise we end up
635 with interesting hangs, where the parent closes its end of a
636 pipe, and sits waiting for (another) child to terminate. Only
637 that child never terminates, because it never gets EOF, because
638 we also have the far end of the pipe open. We even need to
639 close the debugging fd, because sometimes it happens to be one
640 end of a pipe, and a process is waiting on the other end for
641 EOF. Normally it would be closed at some point earlier in
642 destruction, but if we happen to cause the pipe to remain open,
643 EOF never occurs, and we get an infinite hang. Hence all the
644 games to pass in a file descriptor if it's actually needed. */
646 f = sysconf(_SC_OPEN_MAX);
648 where = "sysconf failed";
659 union control_un control;
662 struct cmsghdr *cmptr;
666 msg.msg_control = control.control;
667 msg.msg_controllen = sizeof(control.control);
668 /* We're a connected socket so we don't need a source */
672 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
674 vec[0].iov_base = (void*)⌖
675 vec[0].iov_len = sizeof(target);
677 got = recvmsg(sock, &msg, 0);
682 where = "recv failed";
685 if(got < sizeof(target)) {
686 where = "short recv";
690 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
694 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
695 where = "wrong cmsg_len";
698 if(cmptr->cmsg_level != SOL_SOCKET) {
699 where = "wrong cmsg_level";
702 if(cmptr->cmsg_type != SCM_RIGHTS) {
703 where = "wrong cmsg_type";
707 got_fd = *(int*)CMSG_DATA(cmptr);
708 /* For our last little bit of trickery, put the file descriptor
709 back into Perl_debug_log, as if we never actually closed it
711 if(got_fd != debug_fd) {
712 if (dup2(got_fd, debug_fd) == -1) {
719 PerlIO_flush(Perl_debug_log);
721 got = write(sock, &success, sizeof(success));
724 where = "write failed";
727 if(got < sizeof(success)) {
728 where = "short write";
735 int send_errno = errno;
736 unsigned char length = (unsigned char) strlen(where);
737 struct iovec failure[3] = {
738 {(void*)&send_errno, sizeof(send_errno)},
740 {(void*)where, length}
742 int got = writev(sock, failure, 3);
743 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
744 in the parent if we try to read from the socketpair after the
745 child has exited, even if there was data to read.
746 So sleep a bit to give the parent a fighting chance of
749 _exit((got == -1) ? errno : 0);
753 PL_dumper_fd = fd[0];
758 /* We must account for everything. */
760 /* Destroy the main CV and syntax tree */
761 /* Set PL_curcop now, because destroying ops can cause new SVs
762 to be generated in Perl_pad_swipe, and when running with
763 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
764 op from which the filename structure member is copied. */
765 PL_curcop = &PL_compiling;
767 /* ensure comppad/curpad to refer to main's pad */
768 if (CvPADLIST(PL_main_cv)) {
769 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
770 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
772 op_free(PL_main_root);
775 PL_main_start = NULL;
776 /* note that PL_main_cv isn't usually actually freed at this point,
777 * due to the CvOUTSIDE refs from subs compiled within it. It will
778 * get freed once all the subs are freed in sv_clean_all(), for
779 * destruct_level > 0 */
780 SvREFCNT_dec(PL_main_cv);
782 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
784 /* Tell PerlIO we are about to tear things apart in case
785 we have layers which are using resources that should
789 PerlIO_destruct(aTHX);
792 * Try to destruct global references. We do this first so that the
793 * destructors and destructees still exist. Some sv's might remain.
794 * Non-referenced objects are on their own.
798 /* unhook hooks which will soon be, or use, destroyed data */
799 SvREFCNT_dec(PL_warnhook);
801 SvREFCNT_dec(PL_diehook);
804 /* call exit list functions */
805 while (PL_exitlistlen-- > 0)
806 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
808 Safefree(PL_exitlist);
813 SvREFCNT_dec(PL_registered_mros);
815 /* jettison our possibly duplicated environment */
816 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
817 * so we certainly shouldn't free it here
820 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
821 if (environ != PL_origenviron && !PL_use_safe_putenv
823 /* only main thread can free environ[0] contents */
824 && PL_curinterp == aTHX
830 for (i = 0; environ[i]; i++)
831 safesysfree(environ[i]);
833 /* Must use safesysfree() when working with environ. */
834 safesysfree(environ);
836 environ = PL_origenviron;
839 #endif /* !PERL_MICRO */
841 if (destruct_level == 0) {
843 DEBUG_P(debprofdump());
845 #if defined(PERLIO_LAYERS)
846 /* No more IO - including error messages ! */
847 PerlIO_cleanup(aTHX);
850 CopFILE_free(&PL_compiling);
852 /* The exit() function will do everything that needs doing. */
856 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
859 /* the syntax tree is shared between clones
860 * so op_free(PL_main_root) only ReREFCNT_dec's
861 * REGEXPs in the parent interpreter
862 * we need to manually ReREFCNT_dec for the clones
865 I32 i = AvFILLp(PL_regex_padav);
866 SV **ary = AvARRAY(PL_regex_padav);
869 SvREFCNT_dec(ary[i]);
870 ary[i] = &PL_sv_undef;
876 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
877 PL_stashcache = NULL;
879 /* loosen bonds of global variables */
881 /* XXX can PL_parser still be non-null here? */
882 if(PL_parser && PL_parser->rsfp) {
883 (void)PerlIO_close(PL_parser->rsfp);
884 PL_parser->rsfp = NULL;
888 Safefree(PL_splitstr);
898 PL_doswitches = FALSE;
899 PL_dowarn = G_WARN_OFF;
900 #ifdef PERL_SAWAMPERSAND
901 PL_sawampersand = 0; /* must save all match strings */
905 Safefree(PL_inplace);
907 SvREFCNT_dec(PL_patchlevel);
910 SvREFCNT_dec(PL_e_script);
916 /* magical thingies */
918 SvREFCNT_dec(PL_ofsgv); /* *, */
921 SvREFCNT_dec(PL_ors_sv); /* $\ */
924 SvREFCNT_dec(PL_rs); /* $/ */
927 Safefree(PL_osname); /* $^O */
930 SvREFCNT_dec(PL_statname);
934 /* defgv, aka *_ should be taken care of elsewhere */
937 Safefree(PL_efloatbuf);
941 /* startup and shutdown function lists */
942 SvREFCNT_dec(PL_beginav);
943 SvREFCNT_dec(PL_beginav_save);
944 SvREFCNT_dec(PL_endav);
945 SvREFCNT_dec(PL_checkav);
946 SvREFCNT_dec(PL_checkav_save);
947 SvREFCNT_dec(PL_unitcheckav);
948 SvREFCNT_dec(PL_unitcheckav_save);
949 SvREFCNT_dec(PL_initav);
951 PL_beginav_save = NULL;
954 PL_checkav_save = NULL;
955 PL_unitcheckav = NULL;
956 PL_unitcheckav_save = NULL;
959 /* shortcuts just get cleared */
965 PL_last_in_gv = NULL;
976 SvREFCNT_dec(PL_envgv);
977 SvREFCNT_dec(PL_incgv);
978 SvREFCNT_dec(PL_argvgv);
979 SvREFCNT_dec(PL_replgv);
980 SvREFCNT_dec(PL_DBgv);
981 SvREFCNT_dec(PL_DBline);
982 SvREFCNT_dec(PL_DBsub);
991 SvREFCNT_dec(PL_argvout_stack);
992 PL_argvout_stack = NULL;
994 SvREFCNT_dec(PL_modglobal);
996 SvREFCNT_dec(PL_preambleav);
997 PL_preambleav = NULL;
998 SvREFCNT_dec(PL_subname);
1000 #ifdef PERL_USES_PL_PIDSTATUS
1001 SvREFCNT_dec(PL_pidstatus);
1002 PL_pidstatus = NULL;
1004 SvREFCNT_dec(PL_toptarget);
1005 PL_toptarget = NULL;
1006 SvREFCNT_dec(PL_bodytarget);
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
1010 /* free locale stuff */
1011 #ifdef USE_LOCALE_COLLATE
1012 Safefree(PL_collation_name);
1013 PL_collation_name = NULL;
1016 #ifdef USE_LOCALE_NUMERIC
1017 Safefree(PL_numeric_name);
1018 PL_numeric_name = NULL;
1019 SvREFCNT_dec(PL_numeric_radix_sv);
1020 PL_numeric_radix_sv = NULL;
1023 /* clear character classes */
1024 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1025 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1026 PL_utf8_swash_ptrs[i] = NULL;
1028 SvREFCNT_dec(PL_utf8_mark);
1029 SvREFCNT_dec(PL_utf8_toupper);
1030 SvREFCNT_dec(PL_utf8_totitle);
1031 SvREFCNT_dec(PL_utf8_tolower);
1032 SvREFCNT_dec(PL_utf8_tofold);
1033 SvREFCNT_dec(PL_utf8_idstart);
1034 SvREFCNT_dec(PL_utf8_idcont);
1035 SvREFCNT_dec(PL_utf8_foldable);
1036 SvREFCNT_dec(PL_utf8_foldclosures);
1037 SvREFCNT_dec(PL_AboveLatin1);
1038 SvREFCNT_dec(PL_InBitmap);
1039 SvREFCNT_dec(PL_UpperLatin1);
1040 SvREFCNT_dec(PL_Latin1);
1041 SvREFCNT_dec(PL_NonL1NonFinalFold);
1042 SvREFCNT_dec(PL_HasMultiCharFold);
1043 SvREFCNT_dec(PL_warn_locale);
1044 PL_utf8_mark = NULL;
1045 PL_utf8_toupper = NULL;
1046 PL_utf8_totitle = NULL;
1047 PL_utf8_tolower = NULL;
1048 PL_utf8_tofold = NULL;
1049 PL_utf8_idstart = NULL;
1050 PL_utf8_idcont = NULL;
1051 PL_utf8_foldclosures = NULL;
1052 PL_AboveLatin1 = NULL;
1054 PL_HasMultiCharFold = NULL;
1055 PL_warn_locale = NULL;
1057 PL_NonL1NonFinalFold = NULL;
1058 PL_UpperLatin1 = NULL;
1059 for (i = 0; i < POSIX_CC_COUNT; i++) {
1060 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1061 PL_XPosix_ptrs[i] = NULL;
1064 if (!specialWARN(PL_compiling.cop_warnings))
1065 PerlMemShared_free(PL_compiling.cop_warnings);
1066 PL_compiling.cop_warnings = NULL;
1067 cophh_free(CopHINTHASH_get(&PL_compiling));
1068 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1069 CopFILE_free(&PL_compiling);
1071 /* Prepare to destruct main symbol table. */
1074 /* break ref loop *:: <=> %:: */
1075 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1078 SvREFCNT_dec(PL_curstname);
1079 PL_curstname = NULL;
1081 /* clear queued errors */
1082 SvREFCNT_dec(PL_errors);
1085 SvREFCNT_dec(PL_isarev);
1088 if (destruct_level >= 2) {
1089 if (PL_scopestack_ix != 0)
1090 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1091 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1092 (long)PL_scopestack_ix);
1093 if (PL_savestack_ix != 0)
1094 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced saves: %ld more saves than restores\n",
1096 (long)PL_savestack_ix);
1097 if (PL_tmps_floor != -1)
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1099 (long)PL_tmps_floor + 1);
1100 if (cxstack_ix != -1)
1101 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1102 (long)cxstack_ix + 1);
1106 SvREFCNT_dec(PL_regex_padav);
1107 PL_regex_padav = NULL;
1108 PL_regex_pad = NULL;
1111 #ifdef PERL_IMPLICIT_CONTEXT
1112 /* the entries in this list are allocated via SV PVX's, so get freed
1113 * in sv_clean_all */
1114 Safefree(PL_my_cxt_list);
1117 /* Now absolutely destruct everything, somehow or other, loops or no. */
1119 /* the 2 is for PL_fdpid and PL_strtab */
1120 while (sv_clean_all() > 2)
1124 Safefree(PL_stashpad); /* must come after sv_clean_all */
1127 AvREAL_off(PL_fdpid); /* no surviving entries */
1128 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1131 #ifdef HAVE_INTERP_INTERN
1135 /* constant strings */
1136 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1137 SvREFCNT_dec(PL_sv_consts[i]);
1138 PL_sv_consts[i] = NULL;
1141 /* Destruct the global string table. */
1143 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1144 * so that sv_free() won't fail on them.
1145 * Now that the global string table is using a single hunk of memory
1146 * for both HE and HEK, we either need to explicitly unshare it the
1147 * correct way, or actually free things here.
1150 const I32 max = HvMAX(PL_strtab);
1151 HE * const * const array = HvARRAY(PL_strtab);
1152 HE *hent = array[0];
1155 if (hent && ckWARN_d(WARN_INTERNAL)) {
1156 HE * const next = HeNEXT(hent);
1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1158 "Unbalanced string table refcount: (%ld) for \"%s\"",
1159 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1166 hent = array[riter];
1171 HvARRAY(PL_strtab) = 0;
1172 HvTOTALKEYS(PL_strtab) = 0;
1174 SvREFCNT_dec(PL_strtab);
1177 /* free the pointer tables used for cloning */
1178 ptr_table_free(PL_ptr_table);
1179 PL_ptr_table = (PTR_TBL_t*)NULL;
1182 /* free special SVs */
1184 SvREFCNT(&PL_sv_yes) = 0;
1185 sv_clear(&PL_sv_yes);
1186 SvANY(&PL_sv_yes) = NULL;
1187 SvFLAGS(&PL_sv_yes) = 0;
1189 SvREFCNT(&PL_sv_no) = 0;
1190 sv_clear(&PL_sv_no);
1191 SvANY(&PL_sv_no) = NULL;
1192 SvFLAGS(&PL_sv_no) = 0;
1196 for (i=0; i<=2; i++) {
1197 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1198 sv_clear(PERL_DEBUG_PAD(i));
1199 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1200 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1204 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1205 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1207 #ifdef DEBUG_LEAKING_SCALARS
1208 if (PL_sv_count != 0) {
1213 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1214 svend = &sva[SvREFCNT(sva)];
1215 for (sv = sva + 1; sv < svend; ++sv) {
1216 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1217 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1219 " refcnt=%"UVuf pTHX__FORMAT "\n"
1220 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1222 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1224 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1226 sv->sv_debug_inpad ? "for" : "by",
1227 sv->sv_debug_optype ?
1228 PL_op_name[sv->sv_debug_optype]: "(none)",
1229 PTR2UV(sv->sv_debug_parent),
1232 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1233 Perl_dump_sv_child(aTHX_ sv);
1239 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1243 /* Wait for up to 4 seconds for child to terminate.
1244 This seems to be the least effort way of timing out on reaping
1246 struct timeval waitfor = {4, 0};
1247 int sock = PL_dumper_fd;
1251 FD_SET(sock, &rset);
1252 select(sock + 1, &rset, NULL, NULL, &waitfor);
1253 waitpid(child, &status, WNOHANG);
1258 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1264 #if defined(PERLIO_LAYERS)
1265 /* No more IO - including error messages ! */
1266 PerlIO_cleanup(aTHX);
1269 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1270 as currently layers use it rather than NULL as a marker
1271 for no arg - and will try and SvREFCNT_dec it.
1273 SvREFCNT(&PL_sv_undef) = 0;
1274 SvREADONLY_off(&PL_sv_undef);
1276 Safefree(PL_origfilename);
1277 PL_origfilename = NULL;
1278 Safefree(PL_reg_curpm);
1279 free_tied_hv_pool();
1280 Safefree(PL_op_mask);
1281 Safefree(PL_psig_name);
1282 PL_psig_name = (SV**)NULL;
1283 PL_psig_ptr = (SV**)NULL;
1285 /* We need to NULL PL_psig_pend first, so that
1286 signal handlers know not to use it */
1287 int *psig_save = PL_psig_pend;
1288 PL_psig_pend = (int*)NULL;
1289 Safefree(psig_save);
1292 TAINTING_set(FALSE);
1293 TAINT_WARN_set(FALSE);
1294 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1296 DEBUG_P(debprofdump());
1300 #ifdef USE_REENTRANT_API
1301 Perl_reentrant_free(aTHX);
1306 while (PL_regmatch_slab) {
1307 regmatch_slab *s = PL_regmatch_slab;
1308 PL_regmatch_slab = PL_regmatch_slab->next;
1312 /* As the absolutely last thing, free the non-arena SV for mess() */
1315 /* we know that type == SVt_PVMG */
1317 /* it could have accumulated taint magic */
1320 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1321 moremagic = mg->mg_moremagic;
1322 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1324 Safefree(mg->mg_ptr);
1328 /* we know that type >= SVt_PV */
1329 SvPV_free(PL_mess_sv);
1330 Safefree(SvANY(PL_mess_sv));
1331 Safefree(PL_mess_sv);
1338 =for apidoc perl_free
1340 Releases a Perl interpreter. See L<perlembed>.
1350 PERL_ARGS_ASSERT_PERL_FREE;
1352 if (PL_veto_cleanup)
1355 #ifdef PERL_TRACK_MEMPOOL
1358 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1359 * value as we're probably hunting memory leaks then
1361 if (PL_perl_destruct_level == 0) {
1362 const U32 old_debug = PL_debug;
1363 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1364 thread at thread exit. */
1366 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1367 "free this thread's memory\n");
1368 PL_debug &= ~ DEBUG_m_FLAG;
1370 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1371 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1372 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1375 PL_debug = old_debug;
1380 #if defined(WIN32) || defined(NETWARE)
1381 # if defined(PERL_IMPLICIT_SYS)
1384 void *host = nw_internal_host;
1385 PerlMem_free(aTHXx);
1386 nw_delete_internal_host(host);
1388 void *host = w32_internal_host;
1389 PerlMem_free(aTHXx);
1390 win32_delete_internal_host(host);
1394 PerlMem_free(aTHXx);
1397 PerlMem_free(aTHXx);
1401 #if defined(USE_ITHREADS)
1402 /* provide destructors to clean up the thread key when libperl is unloaded */
1403 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1405 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1406 #pragma fini "perl_fini"
1407 #elif defined(__sun) && !defined(__GNUC__)
1408 #pragma fini (perl_fini)
1412 #if defined(__GNUC__)
1413 __attribute__((destructor))
1419 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1422 PL_curinterp && !PL_veto_cleanup)
1427 #endif /* THREADS */
1430 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1432 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1433 PL_exitlist[PL_exitlistlen].fn = fn;
1434 PL_exitlist[PL_exitlistlen].ptr = ptr;
1439 =for apidoc perl_parse
1441 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1446 #define SET_CURSTASH(newstash) \
1447 if (PL_curstash != newstash) { \
1448 SvREFCNT_dec(PL_curstash); \
1449 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1453 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1460 PERL_ARGS_ASSERT_PERL_PARSE;
1461 #ifndef MULTIPLICITY
1462 PERL_UNUSED_ARG(my_perl);
1464 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1466 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1468 if (s && (grok_atou(s, NULL) == 1)) {
1469 unsigned char *seed= PERL_HASH_SEED;
1470 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1471 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1472 while (seed < seed_end) {
1473 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1475 #ifdef PERL_HASH_RANDOMIZE_KEYS
1476 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1477 PL_HASH_RAND_BITS_ENABLED,
1478 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1480 PerlIO_printf(Perl_debug_log, "\n");
1483 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1487 if (PL_origalen != 0) {
1488 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1491 /* Set PL_origalen be the sum of the contiguous argv[]
1492 * elements plus the size of the env in case that it is
1493 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1494 * as the maximum modifiable length of $0. In the worst case
1495 * the area we are able to modify is limited to the size of
1496 * the original argv[0]. (See below for 'contiguous', though.)
1498 const char *s = NULL;
1500 const UV mask = ~(UV)(PTRSIZE-1);
1501 /* Do the mask check only if the args seem like aligned. */
1503 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1505 /* See if all the arguments are contiguous in memory. Note
1506 * that 'contiguous' is a loose term because some platforms
1507 * align the argv[] and the envp[]. If the arguments look
1508 * like non-aligned, assume that they are 'strictly' or
1509 * 'traditionally' contiguous. If the arguments look like
1510 * aligned, we just check that they are within aligned
1511 * PTRSIZE bytes. As long as no system has something bizarre
1512 * like the argv[] interleaved with some other data, we are
1513 * fine. (Did I just evoke Murphy's Law?) --jhi */
1514 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1516 for (i = 1; i < PL_origargc; i++) {
1517 if ((PL_origargv[i] == s + 1
1519 || PL_origargv[i] == s + 2
1524 (PL_origargv[i] > s &&
1526 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 #ifndef PERL_USE_SAFE_PUTENV
1538 /* Can we grab env area too to be used as the area for $0? */
1539 if (s && PL_origenviron && !PL_use_safe_putenv) {
1540 if ((PL_origenviron[0] == s + 1)
1543 (PL_origenviron[0] > s &&
1544 PL_origenviron[0] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1548 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1549 s = PL_origenviron[0];
1552 my_setenv("NoNe SuCh", NULL);
1553 /* Force copy of environment. */
1554 for (i = 1; PL_origenviron[i]; i++) {
1555 if (PL_origenviron[i] == s + 1
1558 (PL_origenviron[i] > s &&
1559 PL_origenviron[i] <=
1560 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1563 s = PL_origenviron[i];
1571 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1573 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1578 /* Come here if running an undumped a.out. */
1580 PL_origfilename = savepv(argv[0]);
1581 PL_do_undump = FALSE;
1582 cxstack_ix = -1; /* start label stack again */
1584 assert (!TAINT_get);
1588 init_postdump_symbols(argc,argv,env);
1593 op_free(PL_main_root);
1594 PL_main_root = NULL;
1596 PL_main_start = NULL;
1597 SvREFCNT_dec(PL_main_cv);
1601 oldscope = PL_scopestack_ix;
1602 PL_dowarn = G_WARN_OFF;
1607 parse_body(env,xsinit);
1608 if (PL_unitcheckav) {
1609 call_list(oldscope, PL_unitcheckav);
1612 PERL_SET_PHASE(PERL_PHASE_CHECK);
1613 call_list(oldscope, PL_checkav);
1621 /* my_exit() was called */
1622 while (PL_scopestack_ix > oldscope)
1625 SET_CURSTASH(PL_defstash);
1626 if (PL_unitcheckav) {
1627 call_list(oldscope, PL_unitcheckav);
1630 PERL_SET_PHASE(PERL_PHASE_CHECK);
1631 call_list(oldscope, PL_checkav);
1636 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1644 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1645 miniperl, and we need to see those flags reflected in the values here. */
1647 /* What this returns is subject to change. Use the public interface in Config.
1650 S_Internals_V(pTHX_ CV *cv)
1653 #ifdef LOCAL_PATCH_COUNT
1654 const int local_patch_count = LOCAL_PATCH_COUNT;
1656 const int local_patch_count = 0;
1658 const int entries = 3 + local_patch_count;
1660 static const char non_bincompat_options[] =
1667 # ifdef NO_HASH_SEED
1670 # ifdef NO_TAINT_SUPPORT
1673 # ifdef PERL_BOOL_AS_CHAR
1674 " PERL_BOOL_AS_CHAR"
1676 # ifdef PERL_DISABLE_PMC
1679 # ifdef PERL_DONT_CREATE_GVSV
1680 " PERL_DONT_CREATE_GVSV"
1682 # ifdef PERL_EXTERNAL_GLOB
1683 " PERL_EXTERNAL_GLOB"
1685 # ifdef PERL_HASH_FUNC_SIPHASH
1686 " PERL_HASH_FUNC_SIPHASH"
1688 # ifdef PERL_HASH_FUNC_SDBM
1689 " PERL_HASH_FUNC_SDBM"
1691 # ifdef PERL_HASH_FUNC_DJB2
1692 " PERL_HASH_FUNC_DJB2"
1694 # ifdef PERL_HASH_FUNC_SUPERFAST
1695 " PERL_HASH_FUNC_SUPERFAST"
1697 # ifdef PERL_HASH_FUNC_MURMUR3
1698 " PERL_HASH_FUNC_MURMUR3"
1700 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1701 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1703 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1704 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1706 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1707 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1709 # ifdef PERL_IS_MINIPERL
1712 # ifdef PERL_MALLOC_WRAP
1715 # ifdef PERL_MEM_LOG
1718 # ifdef PERL_MEM_LOG_NOIMPL
1719 " PERL_MEM_LOG_NOIMPL"
1721 # ifdef PERL_NEW_COPY_ON_WRITE
1722 " PERL_NEW_COPY_ON_WRITE"
1724 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1725 " PERL_PERTURB_KEYS_DETERMINISTIC"
1727 # ifdef PERL_PERTURB_KEYS_DISABLED
1728 " PERL_PERTURB_KEYS_DISABLED"
1730 # ifdef PERL_PERTURB_KEYS_RANDOM
1731 " PERL_PERTURB_KEYS_RANDOM"
1733 # ifdef PERL_PRESERVE_IVUV
1734 " PERL_PRESERVE_IVUV"
1736 # ifdef PERL_RELOCATABLE_INCPUSH
1737 " PERL_RELOCATABLE_INCPUSH"
1739 # ifdef PERL_USE_DEVEL
1742 # ifdef PERL_USE_SAFE_PUTENV
1743 " PERL_USE_SAFE_PUTENV"
1745 # ifdef UNLINK_ALL_VERSIONS
1746 " UNLINK_ALL_VERSIONS"
1748 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1749 " USE_ATTRIBUTES_FOR_PERLIO"
1751 # ifdef USE_FAST_STDIO
1754 # ifdef USE_HASH_SEED_EXPLICIT
1755 " USE_HASH_SEED_EXPLICIT"
1760 # ifdef USE_LOCALE_CTYPE
1763 # ifdef USE_PERL_ATOF
1766 # ifdef USE_SITECUSTOMIZE
1767 " USE_SITECUSTOMIZE"
1770 PERL_UNUSED_ARG(cv);
1771 PERL_UNUSED_ARG(items);
1773 EXTEND(SP, entries);
1775 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1776 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1777 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1781 PUSHs(Perl_newSVpvn_flags(aTHX_
1782 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1785 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1789 PUSHs(&PL_sv_undef);
1792 for (i = 1; i <= local_patch_count; i++) {
1793 /* This will be an undef, if PL_localpatches[i] is NULL. */
1794 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1800 #define INCPUSH_UNSHIFT 0x01
1801 #define INCPUSH_ADD_OLD_VERS 0x02
1802 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1803 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1804 #define INCPUSH_NOT_BASEDIR 0x10
1805 #define INCPUSH_CAN_RELOCATE 0x20
1806 #define INCPUSH_ADD_SUB_DIRS \
1807 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1810 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1814 int argc = PL_origargc;
1815 char **argv = PL_origargv;
1816 const char *scriptname = NULL;
1817 VOL bool dosearch = FALSE;
1819 bool doextract = FALSE;
1820 const char *cddir = NULL;
1821 #ifdef USE_SITECUSTOMIZE
1822 bool minus_f = FALSE;
1824 SV *linestr_sv = NULL;
1825 bool add_read_e_script = FALSE;
1826 U32 lex_start_flags = 0;
1828 PERL_SET_PHASE(PERL_PHASE_START);
1834 for (argc--,argv++; argc > 0; argc--,argv++) {
1835 if (argv[0][0] != '-' || !argv[0][1])
1841 #ifndef PERL_STRICT_CR
1865 if ((s = moreswitches(s)))
1870 #if defined(SILENT_NO_TAINT_SUPPORT)
1871 /* silently ignore */
1872 #elif defined(NO_TAINT_SUPPORT)
1873 Perl_croak_nocontext("This perl was compiled without taint support. "
1874 "Cowardly refusing to run with -t or -T flags");
1876 CHECK_MALLOC_TOO_LATE_FOR('t');
1877 if( !TAINTING_get ) {
1878 TAINT_WARN_set(TRUE);
1885 #if defined(SILENT_NO_TAINT_SUPPORT)
1886 /* silently ignore */
1887 #elif defined(NO_TAINT_SUPPORT)
1888 Perl_croak_nocontext("This perl was compiled without taint support. "
1889 "Cowardly refusing to run with -t or -T flags");
1891 CHECK_MALLOC_TOO_LATE_FOR('T');
1893 TAINT_WARN_set(FALSE);
1902 forbid_setid('e', FALSE);
1904 PL_e_script = newSVpvs("");
1905 add_read_e_script = TRUE;
1908 sv_catpv(PL_e_script, s);
1910 sv_catpv(PL_e_script, argv[1]);
1914 Perl_croak(aTHX_ "No code specified for -%c", c);
1915 sv_catpvs(PL_e_script, "\n");
1919 #ifdef USE_SITECUSTOMIZE
1925 case 'I': /* -I handled both here and in moreswitches() */
1926 forbid_setid('I', FALSE);
1927 if (!*++s && (s=argv[1]) != NULL) {
1931 STRLEN len = strlen(s);
1932 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1935 Perl_croak(aTHX_ "No directory specified for -I");
1938 forbid_setid('S', FALSE);
1947 opts_prog = newSVpvs("use Config; Config::_V()");
1951 opts_prog = Perl_newSVpvf(aTHX_
1952 "use Config; Config::config_vars(qw%c%s%c)",
1956 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1957 /* don't look for script or read stdin */
1958 scriptname = BIT_BUCKET;
1970 if (!*++s || isSPACE(*s)) {
1974 /* catch use of gnu style long options.
1975 Both of these exit immediately. */
1976 if (strEQ(s, "version"))
1978 if (strEQ(s, "help"))
1983 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1994 #ifndef SECURE_INTERNAL_GETENV
1997 (s = PerlEnv_getenv("PERL5OPT")))
2001 if (*s == '-' && *(s+1) == 'T') {
2002 #if defined(SILENT_NO_TAINT_SUPPORT)
2003 /* silently ignore */
2004 #elif defined(NO_TAINT_SUPPORT)
2005 Perl_croak_nocontext("This perl was compiled without taint support. "
2006 "Cowardly refusing to run with -t or -T flags");
2008 CHECK_MALLOC_TOO_LATE_FOR('T');
2010 TAINT_WARN_set(FALSE);
2014 char *popt_copy = NULL;
2027 if (!strchr("CDIMUdmtwW", *s))
2028 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2032 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2033 s = popt_copy + (s - d);
2041 #if defined(SILENT_NO_TAINT_SUPPORT)
2042 /* silently ignore */
2043 #elif defined(NO_TAINT_SUPPORT)
2044 Perl_croak_nocontext("This perl was compiled without taint support. "
2045 "Cowardly refusing to run with -t or -T flags");
2047 if( !TAINTING_get) {
2048 TAINT_WARN_set(TRUE);
2060 /* Set $^X early so that it can be used for relocatable paths in @INC */
2061 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2062 assert (!TAINT_get);
2067 #if defined(USE_SITECUSTOMIZE)
2069 /* The games with local $! are to avoid setting errno if there is no
2070 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2071 ie a q() operator with a NUL byte as a the delimiter. This avoids
2072 problems with pathnames containing (say) ' */
2073 # ifdef PERL_IS_MINIPERL
2074 AV *const inc = GvAV(PL_incgv);
2075 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2078 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2079 it should be reported immediately as a build failure. */
2080 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2082 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2083 "do {local $!; -f $f }"
2084 " and do $f || die $@ || qq '$f: $!' }",
2085 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2088 /* SITELIB_EXP is a function call on Win32. */
2089 const char *const raw_sitelib = SITELIB_EXP;
2091 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2092 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2093 INCPUSH_CAN_RELOCATE);
2094 const char *const sitelib = SvPVX(sitelib_sv);
2095 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2097 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2098 0, SVfARG(sitelib), 0,
2099 0, SVfARG(sitelib), 0));
2100 assert (SvREFCNT(sitelib_sv) == 1);
2101 SvREFCNT_dec(sitelib_sv);
2108 scriptname = argv[0];
2111 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2113 else if (scriptname == NULL) {
2115 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2121 assert (!TAINT_get);
2125 bool suidscript = FALSE;
2127 rsfp = open_script(scriptname, dosearch, &suidscript);
2129 rsfp = PerlIO_stdin();
2130 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2133 validate_suid(rsfp);
2136 # if defined(SIGCHLD) || defined(SIGCLD)
2139 # define SIGCHLD SIGCLD
2141 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2142 if (sigstate == (Sighandler_t) SIG_IGN) {
2143 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2144 "Can't ignore signal CHLD, forcing to default");
2145 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2153 /* This will croak if suidscript is true, as -x cannot be used with
2155 forbid_setid('x', suidscript);
2156 /* Hence you can't get here if suidscript is true */
2158 linestr_sv = newSV_type(SVt_PV);
2159 lex_start_flags |= LEX_START_COPIED;
2160 find_beginning(linestr_sv, rsfp);
2161 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2162 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2166 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2167 CvUNIQUE_on(PL_compcv);
2169 CvPADLIST_set(PL_compcv, pad_new(0));
2171 PL_isarev = newHV();
2174 boot_core_UNIVERSAL();
2176 newXS("Internals::V", S_Internals_V, __FILE__);
2179 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2181 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2187 # ifdef HAS_SOCKS5_INIT
2188 socks5_init(argv[0]);
2194 init_predump_symbols();
2195 /* init_postdump_symbols not currently designed to be called */
2196 /* more than once (ENV isn't cleared first, for example) */
2197 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2199 init_postdump_symbols(argc,argv,env);
2201 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2202 * or explicitly in some platforms.
2203 * locale.c:Perl_init_i18nl10n() if the environment
2204 * look like the user wants to use UTF-8. */
2205 #if defined(__SYMBIAN32__)
2206 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2208 # ifndef PERL_IS_MINIPERL
2210 /* Requires init_predump_symbols(). */
2211 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2216 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2217 * and the default open disciplines. */
2218 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2219 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2221 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2222 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2223 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2225 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2226 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2227 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2229 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2230 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2231 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2233 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2234 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2237 sv_setpvs(sv, ":utf8\0:utf8");
2239 sv_setpvs(sv, ":utf8\0");
2242 sv_setpvs(sv, "\0:utf8");
2251 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2252 if (strEQ(s, "unsafe"))
2253 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2254 else if (strEQ(s, "safe"))
2255 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2257 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2262 lex_start(linestr_sv, rsfp, lex_start_flags);
2263 SvREFCNT_dec(linestr_sv);
2265 PL_subname = newSVpvs("main");
2267 if (add_read_e_script)
2268 filter_add(read_e_script, NULL);
2270 /* now parse the script */
2272 SETERRNO(0,SS_NORMAL);
2273 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2275 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2277 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2281 CopLINE_set(PL_curcop, 0);
2282 SET_CURSTASH(PL_defstash);
2284 SvREFCNT_dec(PL_e_script);
2292 SAVECOPFILE(PL_curcop);
2293 SAVECOPLINE(PL_curcop);
2294 gv_check(PL_defstash);
2303 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2304 dump_mstats("after compilation:");
2309 PL_restartjmpenv = NULL;
2315 =for apidoc perl_run
2317 Tells a Perl interpreter to run. See L<perlembed>.
2329 PERL_ARGS_ASSERT_PERL_RUN;
2330 #ifndef MULTIPLICITY
2331 PERL_UNUSED_ARG(my_perl);
2334 oldscope = PL_scopestack_ix;
2342 cxstack_ix = -1; /* start context stack again */
2344 case 0: /* normal completion */
2348 case 2: /* my_exit() */
2349 while (PL_scopestack_ix > oldscope)
2352 SET_CURSTASH(PL_defstash);
2353 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2354 PL_endav && !PL_minus_c) {
2355 PERL_SET_PHASE(PERL_PHASE_END);
2356 call_list(oldscope, PL_endav);
2359 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2360 dump_mstats("after execution: ");
2366 POPSTACK_TO(PL_mainstack);
2369 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2380 S_run_body(pTHX_ I32 oldscope)
2382 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2383 PL_sawampersand ? "Enabling" : "Omitting",
2384 (unsigned int)(PL_sawampersand)));
2386 if (!PL_restartop) {
2388 if (DEBUG_x_TEST || DEBUG_B_TEST)
2389 dump_all_perl(!DEBUG_B_TEST);
2391 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2395 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2398 if (PERLDB_SINGLE && PL_DBsingle)
2401 PERL_SET_PHASE(PERL_PHASE_INIT);
2402 call_list(oldscope, PL_initav);
2404 #ifdef PERL_DEBUG_READONLY_OPS
2405 if (PL_main_root && PL_main_root->op_slabbed)
2406 Slab_to_ro(OpSLAB(PL_main_root));
2412 PERL_SET_PHASE(PERL_PHASE_RUN);
2415 PL_restartjmpenv = NULL;
2416 PL_op = PL_restartop;
2420 else if (PL_main_start) {
2421 CvDEPTH(PL_main_cv) = 1;
2422 PL_op = PL_main_start;
2426 NOT_REACHED; /* NOTREACHED */
2430 =head1 SV Manipulation Functions
2432 =for apidoc p||get_sv
2434 Returns the SV of the specified Perl scalar. C<flags> are passed to
2435 C<gv_fetchpv>. If C<GV_ADD> is set and the
2436 Perl variable does not exist then it will be created. If C<flags> is zero
2437 and the variable does not exist then NULL is returned.
2443 Perl_get_sv(pTHX_ const char *name, I32 flags)
2447 PERL_ARGS_ASSERT_GET_SV;
2449 gv = gv_fetchpv(name, flags, SVt_PV);
2456 =head1 Array Manipulation Functions
2458 =for apidoc p||get_av
2460 Returns the AV of the specified Perl global or package array with the given
2461 name (so it won't work on lexical variables). C<flags> are passed
2462 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2463 Perl variable does not exist then it will be created. If C<flags> is zero
2464 and the variable does not exist then NULL is returned.
2466 Perl equivalent: C<@{"$name"}>.
2472 Perl_get_av(pTHX_ const char *name, I32 flags)
2474 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2476 PERL_ARGS_ASSERT_GET_AV;
2486 =head1 Hash Manipulation Functions
2488 =for apidoc p||get_hv
2490 Returns the HV of the specified Perl hash. C<flags> are passed to
2491 C<gv_fetchpv>. If C<GV_ADD> is set and the
2492 Perl variable does not exist then it will be created. If C<flags> is zero
2493 and the variable does not exist then NULL is returned.
2499 Perl_get_hv(pTHX_ const char *name, I32 flags)
2501 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2503 PERL_ARGS_ASSERT_GET_HV;
2513 =head1 CV Manipulation Functions
2515 =for apidoc p||get_cvn_flags
2517 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2518 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2519 exist then it will be declared (which has the same effect as saying
2520 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2521 then NULL is returned.
2523 =for apidoc p||get_cv
2525 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2531 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2533 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2535 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2537 /* XXX this is probably not what they think they're getting.
2538 * It has the same effect as "sub name;", i.e. just a forward
2540 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2541 return newSTUB(gv,0);
2548 /* Nothing in core calls this now, but we can't replace it with a macro and
2549 move it to mathoms.c as a macro would evaluate name twice. */
2551 Perl_get_cv(pTHX_ const char *name, I32 flags)
2553 PERL_ARGS_ASSERT_GET_CV;
2555 return get_cvn_flags(name, strlen(name), flags);
2558 /* Be sure to refetch the stack pointer after calling these routines. */
2562 =head1 Callback Functions
2564 =for apidoc p||call_argv
2566 Performs a callback to the specified named and package-scoped Perl subroutine
2567 with C<argv> (a NULL-terminated array of strings) as arguments. See
2570 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2576 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2578 /* See G_* flags in cop.h */
2579 /* null terminated arg list */
2583 PERL_ARGS_ASSERT_CALL_ARGV;
2588 mXPUSHs(newSVpv(*argv,0));
2593 return call_pv(sub_name, flags);
2597 =for apidoc p||call_pv
2599 Performs a callback to the specified Perl sub. See L<perlcall>.
2605 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2606 /* name of the subroutine */
2607 /* See G_* flags in cop.h */
2609 PERL_ARGS_ASSERT_CALL_PV;
2611 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2615 =for apidoc p||call_method
2617 Performs a callback to the specified Perl method. The blessed object must
2618 be on the stack. See L<perlcall>.
2624 Perl_call_method(pTHX_ const char *methname, I32 flags)
2625 /* name of the subroutine */
2626 /* See G_* flags in cop.h */
2630 PERL_ARGS_ASSERT_CALL_METHOD;
2632 len = strlen(methname);
2633 sv = flags & G_METHOD_NAMED
2634 ? sv_2mortal(newSVpvn_share(methname, len,0))
2635 : newSVpvn_flags(methname, len, SVs_TEMP);
2637 return call_sv(sv, flags | G_METHOD);
2640 /* May be called with any of a CV, a GV, or an SV containing the name. */
2642 =for apidoc p||call_sv
2644 Performs a callback to the Perl sub whose name is in the SV. See
2651 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2652 /* See G_* flags in cop.h */
2655 LOGOP myop; /* fake syntax tree node */
2660 bool oldcatch = CATCH_GET;
2662 OP* const oldop = PL_op;
2665 PERL_ARGS_ASSERT_CALL_SV;
2667 if (flags & G_DISCARD) {
2671 if (!(flags & G_WANT)) {
2672 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2677 Zero(&myop, 1, LOGOP);
2678 if (!(flags & G_NOARGS))
2679 myop.op_flags |= OPf_STACKED;
2680 myop.op_flags |= OP_GIMME_REVERSE(flags);
2684 EXTEND(PL_stack_sp, 1);
2685 if (!(flags & G_METHOD_NAMED))
2686 *++PL_stack_sp = sv;
2688 oldscope = PL_scopestack_ix;
2690 if (PERLDB_SUB && PL_curstash != PL_debstash
2691 /* Handle first BEGIN of -d. */
2692 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2693 /* Try harder, since this may have been a sighandler, thus
2694 * curstash may be meaningless. */
2695 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2696 && !(flags & G_NODEBUG))
2697 myop.op_private |= OPpENTERSUB_DB;
2699 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2700 Zero(&method_op, 1, METHOP);
2701 method_op.op_next = (OP*)&myop;
2702 PL_op = (OP*)&method_op;
2703 if ( flags & G_METHOD_NAMED ) {
2704 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2705 method_op.op_type = OP_METHOD_NAMED;
2706 method_op.op_u.op_meth_sv = sv;
2708 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2709 method_op.op_type = OP_METHOD;
2711 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2712 myop.op_type = OP_ENTERSUB;
2715 if (!(flags & G_EVAL)) {
2717 CALL_BODY_SUB((OP*)&myop);
2718 retval = PL_stack_sp - (PL_stack_base + oldmark);
2719 CATCH_SET(oldcatch);
2722 myop.op_other = (OP*)&myop;
2724 create_eval_scope(flags|G_FAKINGEVAL);
2732 CALL_BODY_SUB((OP*)&myop);
2733 retval = PL_stack_sp - (PL_stack_base + oldmark);
2734 if (!(flags & G_KEEPERR)) {
2742 /* my_exit() was called */
2743 SET_CURSTASH(PL_defstash);
2747 NOT_REACHED; /* NOTREACHED */
2750 PL_restartjmpenv = NULL;
2751 PL_op = PL_restartop;
2755 PL_stack_sp = PL_stack_base + oldmark;
2756 if ((flags & G_WANT) == G_ARRAY)
2760 *++PL_stack_sp = &PL_sv_undef;
2765 if (PL_scopestack_ix > oldscope)
2766 delete_eval_scope();
2770 if (flags & G_DISCARD) {
2771 PL_stack_sp = PL_stack_base + oldmark;
2780 /* Eval a string. The G_EVAL flag is always assumed. */
2783 =for apidoc p||eval_sv
2785 Tells Perl to C<eval> the string in the SV. It supports the same flags
2786 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2792 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2794 /* See G_* flags in cop.h */
2798 UNOP myop; /* fake syntax tree node */
2799 VOL I32 oldmark = SP - PL_stack_base;
2802 OP* const oldop = PL_op;
2805 PERL_ARGS_ASSERT_EVAL_SV;
2807 if (flags & G_DISCARD) {
2814 Zero(&myop, 1, UNOP);
2815 EXTEND(PL_stack_sp, 1);
2816 *++PL_stack_sp = sv;
2818 if (!(flags & G_NOARGS))
2819 myop.op_flags = OPf_STACKED;
2820 myop.op_type = OP_ENTEREVAL;
2821 myop.op_flags |= OP_GIMME_REVERSE(flags);
2822 if (flags & G_KEEPERR)
2823 myop.op_flags |= OPf_SPECIAL;
2825 if (flags & G_RE_REPARSING)
2826 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2828 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2829 * before a PUSHEVAL, which corrupts the stack after a croak */
2830 TAINT_PROPER("eval_sv()");
2836 if (PL_op == (OP*)(&myop)) {
2837 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2839 goto fail; /* failed in compilation */
2842 retval = PL_stack_sp - (PL_stack_base + oldmark);
2843 if (!(flags & G_KEEPERR)) {
2851 /* my_exit() was called */
2852 SET_CURSTASH(PL_defstash);
2856 NOT_REACHED; /* NOTREACHED */
2859 PL_restartjmpenv = NULL;
2860 PL_op = PL_restartop;
2865 PL_stack_sp = PL_stack_base + oldmark;
2866 if ((flags & G_WANT) == G_ARRAY)
2870 *++PL_stack_sp = &PL_sv_undef;
2876 if (flags & G_DISCARD) {
2877 PL_stack_sp = PL_stack_base + oldmark;
2887 =for apidoc p||eval_pv
2889 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2895 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2897 SV* sv = newSVpv(p, 0);
2899 PERL_ARGS_ASSERT_EVAL_PV;
2901 eval_sv(sv, G_SCALAR);
2910 /* just check empty string or undef? */
2911 if (croak_on_error) {
2912 SV * const errsv = ERRSV;
2913 if(SvTRUE_NN(errsv))
2914 /* replace with croak_sv? */
2915 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2921 /* Require a module. */
2924 =head1 Embedding Functions
2926 =for apidoc p||require_pv
2928 Tells Perl to C<require> the file named by the string argument. It is
2929 analogous to the Perl code C<eval "require '$file'">. It's even
2930 implemented that way; consider using load_module instead.
2935 Perl_require_pv(pTHX_ const char *pv)
2940 PERL_ARGS_ASSERT_REQUIRE_PV;
2942 PUSHSTACKi(PERLSI_REQUIRE);
2943 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2944 eval_sv(sv_2mortal(sv), G_DISCARD);
2949 S_usage(pTHX) /* XXX move this out into a module ? */
2951 /* This message really ought to be max 23 lines.
2952 * Removed -h because the user already knows that option. Others? */
2954 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2955 minimum of 509 character string literals. */
2956 static const char * const usage_msg[] = {
2957 " -0[octal] specify record separator (\\0, if no argument)\n"
2958 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2959 " -C[number/list] enables the listed Unicode features\n"
2960 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2961 " -d[:debugger] run program under debugger\n"
2962 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2963 " -e program one line of program (several -e's allowed, omit programfile)\n"
2964 " -E program like -e, but enables all optional features\n"
2965 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2966 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2967 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2968 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2969 " -l[octal] enable line ending processing, specifies line terminator\n"
2970 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2971 " -n assume \"while (<>) { ... }\" loop around program\n"
2972 " -p assume loop like -n but print line also, like sed\n"
2973 " -s enable rudimentary parsing for switches after programfile\n"
2974 " -S look for programfile using PATH environment variable\n",
2975 " -t enable tainting warnings\n"
2976 " -T enable tainting checks\n"
2977 " -u dump core after parsing program\n"
2978 " -U allow unsafe operations\n"
2979 " -v print version, patchlevel and license\n"
2980 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2981 " -w enable many useful warnings\n"
2982 " -W enable all warnings\n"
2983 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2984 " -X disable all warnings\n"
2986 "Run 'perldoc perl' for more help with Perl.\n\n",
2989 const char * const *p = usage_msg;
2990 PerlIO *out = PerlIO_stdout();
2993 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2996 PerlIO_puts(out, *p++);
3000 /* convert a string of -D options (or digits) into an int.
3001 * sets *s to point to the char after the options */
3005 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3007 static const char * const usage_msgd[] = {
3008 " Debugging flag values: (see also -d)\n"
3009 " p Tokenizing and parsing (with v, displays parse stack)\n"
3010 " s Stack snapshots (with v, displays all stacks)\n"
3011 " l Context (loop) stack processing\n"
3012 " t Trace execution\n"
3013 " o Method and overloading resolution\n",
3014 " c String/numeric conversions\n"
3015 " P Print profiling info, source file input state\n"
3016 " m Memory and SV allocation\n"
3017 " f Format processing\n"
3018 " r Regular expression parsing and execution\n"
3019 " x Syntax tree dump\n",
3020 " u Tainting checks\n"
3021 " H Hash dump -- usurps values()\n"
3022 " X Scratchpad allocation\n"
3024 " S Op slab allocation\n"
3026 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3027 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3028 " v Verbose: use in conjunction with other flags\n"
3029 " C Copy On Write\n"
3030 " A Consistency checks on internal structures\n"
3031 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3032 " M trace smart match resolution\n"
3033 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3034 " L trace some locale setting information--for Perl core development\n",
3039 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3042 /* if adding extra options, remember to update DEBUG_MASK */
3043 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3045 for (; isWORDCHAR(**s); (*s)++) {
3046 const char * const d = strchr(debopts,**s);
3048 i |= 1 << (d - debopts);
3049 else if (ckWARN_d(WARN_DEBUGGING))
3050 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3051 "invalid option -D%c, use -D'' to see choices\n", **s);
3054 else if (isDIGIT(**s)) {
3056 i = grok_atou(*s, &e);
3059 for (; isWORDCHAR(**s); (*s)++) ;
3061 else if (givehelp) {
3062 const char *const *p = usage_msgd;
3063 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3069 /* This routine handles any switches that can be given during run */
3072 Perl_moreswitches(pTHX_ const char *s)
3076 const char option = *s; /* used to remember option in -m/-M code */
3078 PERL_ARGS_ASSERT_MORESWITCHES;
3086 SvREFCNT_dec(PL_rs);
3087 if (s[1] == 'x' && s[2]) {
3088 const char *e = s+=2;
3094 flags = PERL_SCAN_SILENT_ILLDIGIT;
3095 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3096 if (s + numlen < e) {
3097 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3101 PL_rs = newSVpvs("");
3102 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3103 tmps = (U8*)SvPVX(PL_rs);
3104 uvchr_to_utf8(tmps, rschar);
3105 SvCUR_set(PL_rs, UNISKIP(rschar));
3110 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3111 if (rschar & ~((U8)~0))
3112 PL_rs = &PL_sv_undef;
3113 else if (!rschar && numlen >= 2)
3114 PL_rs = newSVpvs("");
3116 char ch = (char)rschar;
3117 PL_rs = newSVpvn(&ch, 1);
3120 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3125 PL_unicode = parse_unicode_opts( (const char **)&s );
3126 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3134 while (*s && !isSPACE(*s)) ++s;
3135 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3147 forbid_setid('d', FALSE);
3150 /* -dt indicates to the debugger that threads will be used */
3151 if (*s == 't' && !isWORDCHAR(s[1])) {
3153 my_setenv("PERL5DB_THREADED", "1");
3156 /* The following permits -d:Mod to accepts arguments following an =
3157 in the fashion that -MSome::Mod does. */
3158 if (*s == ':' || *s == '=') {
3165 sv = newSVpvs("no Devel::");
3167 sv = newSVpvs("use Devel::");
3171 end = s + strlen(s);
3173 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3174 while(isWORDCHAR(*s) || *s==':') ++s;
3176 sv_catpvn(sv, start, end - start);
3178 sv_catpvn(sv, start, s-start);
3179 /* Don't use NUL as q// delimiter here, this string goes in the
3181 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3184 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3188 PL_perldb = PERLDB_ALL;
3195 forbid_setid('D', FALSE);
3197 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3198 #else /* !DEBUGGING */
3199 if (ckWARN_d(WARN_DEBUGGING))
3200 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3201 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3202 for (s++; isWORDCHAR(*s); s++) ;
3209 Safefree(PL_inplace);
3210 #if defined(__CYGWIN__) /* do backup extension automagically */
3211 if (*(s+1) == '\0') {
3212 PL_inplace = savepvs(".bak");
3215 #endif /* __CYGWIN__ */
3217 const char * const start = ++s;
3218 while (*s && !isSPACE(*s))
3221 PL_inplace = savepvn(start, s - start);
3225 if (*s == '-') /* Additional switches on #! line. */
3229 case 'I': /* -I handled both here and in parse_body() */
3230 forbid_setid('I', FALSE);
3232 while (*s && isSPACE(*s))
3237 /* ignore trailing spaces (possibly followed by other switches) */
3239 for (e = p; *e && !isSPACE(*e); e++) ;
3243 } while (*p && *p != '-');
3245 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3251 Perl_croak(aTHX_ "No directory specified for -I");
3257 SvREFCNT_dec(PL_ors_sv);
3263 PL_ors_sv = newSVpvs("\n");
3264 numlen = 3 + (*s == '0');
3265 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3269 if (RsPARA(PL_rs)) {
3270 PL_ors_sv = newSVpvs("\n\n");
3273 PL_ors_sv = newSVsv(PL_rs);
3278 forbid_setid('M', FALSE); /* XXX ? */
3281 forbid_setid('m', FALSE); /* XXX ? */
3286 const char *use = "use ";
3288 /* -M-foo == 'no foo' */
3289 /* Leading space on " no " is deliberate, to make both
3290 possibilities the same length. */
3291 if (*s == '-') { use = " no "; ++s; }
3292 sv = newSVpvn(use,4);
3294 /* We allow -M'Module qw(Foo Bar)' */
3295 while(isWORDCHAR(*s) || *s==':') {
3304 Perl_croak(aTHX_ "Module name required with -%c option",
3307 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3308 "contains single ':'",
3309 (int)(s - start), start, option);
3310 end = s + strlen(s);
3312 sv_catpvn(sv, start, end - start);
3313 if (option == 'm') {
3315 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3316 sv_catpvs( sv, " ()");
3319 sv_catpvn(sv, start, s-start);
3320 /* Use NUL as q''-delimiter. */
3321 sv_catpvs(sv, " split(/,/,q\0");
3323 sv_catpvn(sv, s, end - s);
3324 sv_catpvs(sv, "\0)");
3327 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3330 Perl_croak(aTHX_ "Missing argument to -%c", option);
3341 forbid_setid('s', FALSE);
3342 PL_doswitches = TRUE;
3347 #if defined(SILENT_NO_TAINT_SUPPORT)
3348 /* silently ignore */
3349 #elif defined(NO_TAINT_SUPPORT)
3350 Perl_croak_nocontext("This perl was compiled without taint support. "
3351 "Cowardly refusing to run with -t or -T flags");
3359 PL_do_undump = TRUE;
3369 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3370 PL_dowarn |= G_WARN_ON;
3375 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3376 if (!specialWARN(PL_compiling.cop_warnings))
3377 PerlMemShared_free(PL_compiling.cop_warnings);
3378 PL_compiling.cop_warnings = pWARN_ALL ;
3382 PL_dowarn = G_WARN_ALL_OFF;
3383 if (!specialWARN(PL_compiling.cop_warnings))
3384 PerlMemShared_free(PL_compiling.cop_warnings);
3385 PL_compiling.cop_warnings = pWARN_NONE ;
3392 if (s[0] == '-') /* Additional switches on #! line. */
3397 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3403 #ifdef ALTERNATE_SHEBANG
3404 case 'S': /* OS/2 needs -S on "extproc" line. */
3407 case 'e': case 'f': case 'x': case 'E':
3408 #ifndef ALTERNATE_SHEBANG
3412 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3415 "Unrecognized switch: -%.1s (-h will show valid options)",s
3425 PerlIO * PIO_stdout;
3427 const char * const level_str = "v" PERL_VERSION_STRING;
3428 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3429 #ifdef PERL_PATCHNUM
3431 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3432 static const char num [] = PERL_PATCHNUM "*";
3434 static const char num [] = PERL_PATCHNUM;
3437 const STRLEN num_len = sizeof(num)-1;
3438 /* A very advanced compiler would fold away the strnEQ
3439 and this whole conditional, but most (all?) won't do it.
3440 SV level could also be replaced by with preprocessor
3443 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3444 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3445 of the interp so it might contain format characters
3447 level = newSVpvn(num, num_len);
3449 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3453 SV* level = newSVpvn(level_str, level_len);
3454 #endif /* #ifdef PERL_PATCHNUM */
3455 PIO_stdout = PerlIO_stdout();
3456 PerlIO_printf(PIO_stdout,
3457 "\nThis is perl " STRINGIFY(PERL_REVISION)
3458 ", version " STRINGIFY(PERL_VERSION)
3459 ", subversion " STRINGIFY(PERL_SUBVERSION)
3460 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3462 SvREFCNT_dec_NN(level);
3464 #if defined(LOCAL_PATCH_COUNT)
3465 if (LOCAL_PATCH_COUNT > 0)
3466 PerlIO_printf(PIO_stdout,
3467 "\n(with %d registered patch%s, "
3468 "see perl -V for more detail)",
3470 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3473 PerlIO_printf(PIO_stdout,
3474 "\n\nCopyright 1987-2014, Larry Wall\n");
3476 PerlIO_printf(PIO_stdout,
3477 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3480 PerlIO_printf(PIO_stdout,
3481 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3482 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3485 PerlIO_printf(PIO_stdout,
3486 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3487 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3490 PerlIO_printf(PIO_stdout,
3491 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3494 PerlIO_printf(PIO_stdout,
3495 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3498 PerlIO_printf(PIO_stdout,
3499 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3502 PerlIO_printf(PIO_stdout,
3503 "WINCE port by Rainer Keuchel, 2001-2002\n"
3504 "Built on " __DATE__ " " __TIME__ "\n\n");
3507 #ifdef __SYMBIAN32__
3508 PerlIO_printf(PIO_stdout,
3509 "Symbian port by Nokia, 2004-2005\n");
3511 #ifdef BINARY_BUILD_NOTICE
3512 BINARY_BUILD_NOTICE;
3514 PerlIO_printf(PIO_stdout,
3516 Perl may be copied only under the terms of either the Artistic License or the\n\
3517 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3518 Complete documentation for Perl, including FAQ lists, should be found on\n\
3519 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3520 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3524 /* compliments of Tom Christiansen */
3526 /* unexec() can be found in the Gnu emacs distribution */
3527 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3530 #include <lib$routines.h>
3534 Perl_my_unexec(pTHX)
3537 SV * prog = newSVpv(BIN_EXP, 0);
3538 SV * file = newSVpv(PL_origfilename, 0);
3542 sv_catpvs(prog, "/perl");
3543 sv_catpvs(file, ".perldump");
3545 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3546 /* unexec prints msg to stderr in case of failure */
3547 PerlProc_exit(status);
3549 PERL_UNUSED_CONTEXT;
3551 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3552 # elif defined(WIN32) || defined(__CYGWIN__)
3553 Perl_croak_nocontext("dump is not supported");
3555 ABORT(); /* for use with undump */
3560 /* initialize curinterp */
3565 # define PERLVAR(prefix,var,type)
3566 # define PERLVARA(prefix,var,n,type)
3567 # if defined(PERL_IMPLICIT_CONTEXT)
3568 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3569 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3571 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3572 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3574 # include "intrpvar.h"
3580 # define PERLVAR(prefix,var,type)
3581 # define PERLVARA(prefix,var,n,type)
3582 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3583 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3584 # include "intrpvar.h"
3594 S_init_main_stash(pTHX)
3598 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3599 /* We know that the string "main" will be in the global shared string
3600 table, so it's a small saving to use it rather than allocate another
3602 PL_curstname = newSVpvs_share("main");
3603 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3604 /* If we hadn't caused another reference to "main" to be in the shared
3605 string table above, then it would be worth reordering these two,
3606 because otherwise all we do is delete "main" from it as a consequence
3607 of the SvREFCNT_dec, only to add it again with hv_name_set */
3608 SvREFCNT_dec(GvHV(gv));
3609 hv_name_set(PL_defstash, "main", 4, 0);
3610 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3612 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3614 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3615 GvMULTI_on(PL_incgv);
3616 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3617 SvREFCNT_inc_simple_void(PL_hintgv);
3618 GvMULTI_on(PL_hintgv);
3619 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3620 SvREFCNT_inc_simple_void(PL_defgv);
3621 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3622 SvREFCNT_inc_simple_void(PL_errgv);
3623 GvMULTI_on(PL_errgv);
3624 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3625 SvREFCNT_inc_simple_void(PL_replgv);
3626 GvMULTI_on(PL_replgv);
3627 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3628 #ifdef PERL_DONT_CREATE_GVSV
3631 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3633 SET_CURSTASH(PL_defstash);
3634 CopSTASH_set(&PL_compiling, PL_defstash);
3635 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3636 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3638 /* We must init $/ before switches are processed. */
3639 sv_setpvs(get_sv("/", GV_ADD), "\n");
3643 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3646 PerlIO *rsfp = NULL;
3650 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3653 PL_origfilename = savepvs("-e");
3656 /* if find_script() returns, it returns a malloc()-ed value */
3657 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3659 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3660 const char *s = scriptname + 8;
3662 fdscript = grok_atou(s, &e);
3666 * Tell apart "normal" usage of fdscript, e.g.
3667 * with bash on FreeBSD:
3668 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3669 * from usage in suidperl.
3670 * Does any "normal" usage leave garbage after the number???
3671 * Is it a mistake to use a similar /dev/fd/ construct for
3676 * Be supersafe and do some sanity-checks.
3677 * Still, can we be sure we got the right thing?
3680 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3683 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3685 scriptname = savepv(s + 1);
3686 Safefree(PL_origfilename);
3687 PL_origfilename = (char *)scriptname;
3692 CopFILE_free(PL_curcop);
3693 CopFILE_set(PL_curcop, PL_origfilename);
3694 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3695 scriptname = (char *)"";
3696 if (fdscript >= 0) {
3697 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3699 else if (!*scriptname) {
3700 forbid_setid(0, *suidscript);
3704 #ifdef FAKE_BIT_BUCKET
3705 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3706 * is called) and still have the "-e" work. (Believe it or not,
3707 * a /dev/null is required for the "-e" to work because source
3708 * filter magic is used to implement it. ) This is *not* a general
3709 * replacement for a /dev/null. What we do here is create a temp
3710 * file (an empty file), open up that as the script, and then
3711 * immediately close and unlink it. Close enough for jazz. */
3712 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3713 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3714 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3715 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3716 FAKE_BIT_BUCKET_TEMPLATE
3718 const char * const err = "Failed to create a fake bit bucket";
3719 if (strEQ(scriptname, BIT_BUCKET)) {
3720 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3721 int old_umask = umask(0600);
3722 int tmpfd = mkstemp(tmpname);
3725 scriptname = tmpname;
3728 Perl_croak(aTHX_ err);
3731 scriptname = mktemp(tmpname);
3733 Perl_croak(aTHX_ err);
3738 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3739 #ifdef FAKE_BIT_BUCKET
3740 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3741 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3742 && strlen(scriptname) == sizeof(tmpname) - 1) {
3745 scriptname = BIT_BUCKET;
3749 /* PSz 16 Sep 03 Keep neat error message */
3751 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3753 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3754 CopFILE(PL_curcop), Strerror(errno));
3756 fd = PerlIO_fileno(rsfp);
3757 #if defined(HAS_FCNTL) && defined(F_SETFD)
3759 /* ensure close-on-exec */
3760 if (fcntl(fd, F_SETFD, 1) < 0) {
3761 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3762 CopFILE(PL_curcop), Strerror(errno));
3768 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3769 && S_ISDIR(tmpstatbuf.st_mode)))
3770 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3778 * I_SYSSTATVFS HAS_FSTATVFS
3780 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3781 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3782 * here so that metaconfig picks them up. */
3785 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3786 /* Don't even need this function. */
3789 S_validate_suid(pTHX_ PerlIO *rsfp)
3791 const Uid_t my_uid = PerlProc_getuid();
3792 const Uid_t my_euid = PerlProc_geteuid();
3793 const Gid_t my_gid = PerlProc_getgid();
3794 const Gid_t my_egid = PerlProc_getegid();
3796 PERL_ARGS_ASSERT_VALIDATE_SUID;
3798 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3800 int fd = PerlIO_fileno(rsfp);
3802 Perl_croak(aTHX_ "Illegal suidscript");
3804 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3805 Perl_croak(aTHX_ "Illegal suidscript");
3808 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3810 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3813 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3814 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3815 /* not set-id, must be wrapped */
3818 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3821 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3826 PERL_ARGS_ASSERT_FIND_BEGINNING;
3828 /* skip forward in input to the real script? */
3831 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3832 Perl_croak(aTHX_ "No Perl script found in input\n");
3834 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3835 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3836 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3838 while (*s == ' ' || *s == '\t') s++;
3840 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3841 || s2[-1] == '_') s2--;
3842 if (strnEQ(s2-4,"perl",4))
3843 while ((s = moreswitches(s)))
3852 /* no need to do anything here any more if we don't
3854 #ifndef NO_TAINT_SUPPORT
3855 const Uid_t my_uid = PerlProc_getuid();
3856 const Uid_t my_euid = PerlProc_geteuid();
3857 const Gid_t my_gid = PerlProc_getgid();
3858 const Gid_t my_egid = PerlProc_getegid();
3860 PERL_UNUSED_CONTEXT;
3862 /* Should not happen: */
3863 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3864 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3868 * Should go by suidscript, not uid!=euid: why disallow
3869 * system("ls") in scripts run from setuid things?
3870 * Or, is this run before we check arguments and set suidscript?
3871 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3872 * (We never have suidscript, can we be sure to have fdscript?)
3873 * Or must then go by UID checks? See comments in forbid_setid also.
3877 /* This is used very early in the lifetime of the program,
3878 * before even the options are parsed, so PL_tainting has
3879 * not been initialized properly. */
3881 Perl_doing_taint(int argc, char *argv[], char *envp[])
3883 #ifndef PERL_IMPLICIT_SYS
3884 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3885 * before we have an interpreter-- and the whole point of this
3886 * function is to be called at such an early stage. If you are on
3887 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3888 * "tainted because running with altered effective ids', you'll
3889 * have to add your own checks somewhere in here. The two most
3890 * known samples of 'implicitness' are Win32 and NetWare, neither
3891 * of which has much of concept of 'uids'. */
3892 Uid_t uid = PerlProc_getuid();
3893 Uid_t euid = PerlProc_geteuid();
3894 Gid_t gid = PerlProc_getgid();
3895 Gid_t egid = PerlProc_getegid();
3902 if (uid && (euid != uid || egid != gid))
3904 #endif /* !PERL_IMPLICIT_SYS */
3905 /* This is a really primitive check; environment gets ignored only
3906 * if -T are the first chars together; otherwise one gets
3907 * "Too late" message. */
3908 if ( argc > 1 && argv[1][0] == '-'
3909 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3914 /* Passing the flag as a single char rather than a string is a slight space
3915 optimisation. The only message that isn't /^-.$/ is
3916 "program input from stdin", which is substituted in place of '\0', which
3917 could never be a command line flag. */
3919 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3921 char string[3] = "-x";
3922 const char *message = "program input from stdin";
3924 PERL_UNUSED_CONTEXT;
3930 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3931 if (PerlProc_getuid() != PerlProc_geteuid())
3932 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3933 if (PerlProc_getgid() != PerlProc_getegid())
3934 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3935 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3937 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3941 Perl_init_dbargs(pTHX)
3943 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3948 /* Someone has already created it.
3949 It might have entries, and if we just turn off AvREAL(), they will
3950 "leak" until global destruction. */
3952 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3953 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3955 AvREIFY_only(PL_dbargs);
3959 Perl_init_debugger(pTHX)
3961 HV * const ostash = PL_curstash;
3964 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3966 Perl_init_dbargs(aTHX);
3967 PL_DBgv = MUTABLE_GV(
3968 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3970 PL_DBline = MUTABLE_GV(
3971 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3973 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3974 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3976 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3977 if (!SvIOK(PL_DBsingle))
3978 sv_setiv(PL_DBsingle, 0);
3979 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3980 mg->mg_private = DBVARMG_SINGLE;
3981 SvSETMAGIC(PL_DBsingle);
3983 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3984 if (!SvIOK(PL_DBtrace))
3985 sv_setiv(PL_DBtrace, 0);
3986 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3987 mg->mg_private = DBVARMG_TRACE;
3988 SvSETMAGIC(PL_DBtrace);
3990 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3991 if (!SvIOK(PL_DBsignal))
3992 sv_setiv(PL_DBsignal, 0);
3993 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3994 mg->mg_private = DBVARMG_SIGNAL;
3995 SvSETMAGIC(PL_DBsignal);
3997 SvREFCNT_dec(PL_curstash);
3998 PL_curstash = ostash;
4001 #ifndef STRESS_REALLOC
4002 #define REASONABLE(size) (size)
4003 #define REASONABLE_but_at_least(size,min) (size)
4005 #define REASONABLE(size) (1) /* unreasonable */
4006 #define REASONABLE_but_at_least(size,min) (min)
4010 Perl_init_stacks(pTHX)
4012 /* start with 128-item stack and 8K cxstack */
4013 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4014 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4015 PL_curstackinfo->si_type = PERLSI_MAIN;
4016 PL_curstack = PL_curstackinfo->si_stack;
4017 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4019 PL_stack_base = AvARRAY(PL_curstack);
4020 PL_stack_sp = PL_stack_base;
4021 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4023 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4026 PL_tmps_max = REASONABLE(128);
4028 Newx(PL_markstack,REASONABLE(32),I32);
4029 PL_markstack_ptr = PL_markstack;
4030 PL_markstack_max = PL_markstack + REASONABLE(32);
4034 Newx(PL_scopestack,REASONABLE(32),I32);
4036 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4038 PL_scopestack_ix = 0;
4039 PL_scopestack_max = REASONABLE(32);
4041 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4042 PL_savestack_ix = 0;
4043 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4051 while (PL_curstackinfo->si_next)
4052 PL_curstackinfo = PL_curstackinfo->si_next;
4053 while (PL_curstackinfo) {
4054 PERL_SI *p = PL_curstackinfo->si_prev;
4055 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4056 Safefree(PL_curstackinfo->si_cxstack);
4057 Safefree(PL_curstackinfo);
4058 PL_curstackinfo = p;
4060 Safefree(PL_tmps_stack);
4061 Safefree(PL_markstack);
4062 Safefree(PL_scopestack);
4064 Safefree(PL_scopestack_name);
4066 Safefree(PL_savestack);
4070 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4072 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4073 AV *const isa = GvAVn(gv);
4076 PERL_ARGS_ASSERT_POPULATE_ISA;
4078 if(AvFILLp(isa) != -1)
4081 /* NOTE: No support for tied ISA */
4083 va_start(args, len);
4085 const char *const parent = va_arg(args, const char*);
4090 parent_len = va_arg(args, size_t);
4092 /* Arguments are supplied with a trailing :: */
4093 assert(parent_len > 2);
4094 assert(parent[parent_len - 1] == ':');
4095 assert(parent[parent_len - 2] == ':');
4096 av_push(isa, newSVpvn(parent, parent_len - 2));
4097 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4104 S_init_predump_symbols(pTHX)
4109 sv_setpvs(get_sv("\"", GV_ADD), " ");
4110 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4113 /* Historically, PVIOs were blessed into IO::Handle, unless
4114 FileHandle was loaded, in which case they were blessed into
4115 that. Action at a distance.
4116 However, if we simply bless into IO::Handle, we break code
4117 that assumes that PVIOs will have (among others) a seek
4118 method. IO::File inherits from IO::Handle and IO::Seekable,
4119 and provides the needed methods. But if we simply bless into
4120 it, then we break code that assumed that by loading
4121 IO::Handle, *it* would work.
4122 So a compromise is to set up the correct @IO::File::ISA,
4123 so that code that does C<use IO::Handle>; will still work.
4126 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4127 STR_WITH_LEN("IO::Handle::"),
4128 STR_WITH_LEN("IO::Seekable::"),
4129 STR_WITH_LEN("Exporter::"),
4132 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4133 GvMULTI_on(PL_stdingv);
4134 io = GvIOp(PL_stdingv);
4135 IoTYPE(io) = IoTYPE_RDONLY;
4136 IoIFP(io) = PerlIO_stdin();
4137 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4139 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4141 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4144 IoTYPE(io) = IoTYPE_WRONLY;
4145 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4147 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4149 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4151 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4152 GvMULTI_on(PL_stderrgv);
4153 io = GvIOp(PL_stderrgv);
4154 IoTYPE(io) = IoTYPE_WRONLY;
4155 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4156 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4158 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4160 PL_statname = newSVpvs(""); /* last filename we did stat on */
4164 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4166 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4168 argc--,argv++; /* skip name of script */
4169 if (PL_doswitches) {
4170 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4174 if (argv[0][1] == '-' && !argv[0][2]) {
4178 if ((s = strchr(argv[0], '='))) {
4179 const char *const start_name = argv[0] + 1;
4180 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4181 TRUE, SVt_PV)), s + 1);
4184 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4187 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4188 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4189 GvMULTI_on(PL_argvgv);
4190 av_clear(GvAVn(PL_argvgv));
4191 for (; argc > 0; argc--,argv++) {
4192 SV * const sv = newSVpv(argv[0],0);
4193 av_push(GvAV(PL_argvgv),sv);
4194 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4195 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4198 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4199 (void)sv_utf8_decode(sv);
4203 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4204 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4205 "-i used with no filenames on the command line, "
4206 "reading from STDIN");
4210 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4217 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4219 PL_toptarget = newSV_type(SVt_PVIV);
4220 sv_setpvs(PL_toptarget, "");
4221 PL_bodytarget = newSV_type(SVt_PVIV);
4222 sv_setpvs(PL_bodytarget, "");
4223 PL_formtarget = PL_bodytarget;
4227 init_argv_symbols(argc,argv);
4229 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4230 sv_setpv(GvSV(tmpgv),PL_origfilename);
4232 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4234 bool env_is_not_environ;
4235 SvREFCNT_inc_simple_void_NN(PL_envgv);
4236 GvMULTI_on(PL_envgv);
4237 hv = GvHVn(PL_envgv);
4238 hv_magic(hv, NULL, PERL_MAGIC_env);
4240 #ifdef USE_ENVIRON_ARRAY
4241 /* Note that if the supplied env parameter is actually a copy
4242 of the global environ then it may now point to free'd memory
4243 if the environment has been modified since. To avoid this
4244 problem we treat env==NULL as meaning 'use the default'
4248 env_is_not_environ = env != environ;
4249 if (env_is_not_environ
4250 # ifdef USE_ITHREADS
4251 && PL_curinterp == aTHX
4260 for (; *env; env++) {
4263 if (!(s = strchr(old_var,'=')) || s == old_var)
4266 #if defined(MSDOS) && !defined(DJGPP)
4268 (void)strupr(old_var);
4271 sv = newSVpv(s+1, 0);
4272 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4273 if (env_is_not_environ)
4277 #endif /* USE_ENVIRON_ARRAY */
4278 #endif /* !PERL_MICRO */
4282 /* touch @F array to prevent spurious warnings 20020415 MJD */
4284 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4289 S_init_perllib(pTHX)
4292 const char *perl5lib = NULL;
4295 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4299 if (!TAINTING_get) {
4301 perl5lib = PerlEnv_getenv("PERL5LIB");
4303 * It isn't possible to delete an environment variable with
4304 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4305 * case we treat PERL5LIB as undefined if it has a zero-length value.
4307 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4308 if (perl5lib && *perl5lib != '\0')
4312 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4314 s = PerlEnv_getenv("PERLLIB");
4316 incpush_use_sep(s, 0, 0);
4319 /* Treat PERL5?LIB as a possible search list logical name -- the
4320 * "natural" VMS idiom for a Unix path string. We allow each
4321 * element to be a set of |-separated directories for compatibility.
4325 if (my_trnlnm("PERL5LIB",buf,0))
4327 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4328 } while (my_trnlnm("PERL5LIB",buf,++idx));
4330 while (my_trnlnm("PERLLIB",buf,idx++))
4331 incpush_use_sep(buf, 0, 0);
4336 #ifndef PERL_IS_MINIPERL
4337 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4338 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4340 /* Use the ~-expanded versions of APPLLIB (undocumented),
4341 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4344 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4345 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4349 /* sitearch is always relative to sitelib on Windows for
4350 * DLL-based path intuition to work correctly */
4351 # if !defined(WIN32)
4352 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4353 INCPUSH_CAN_RELOCATE);
4359 /* this picks up sitearch as well */
4360 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4362 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4364 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4368 #ifdef PERL_VENDORARCH_EXP
4369 /* vendorarch is always relative to vendorlib on Windows for
4370 * DLL-based path intuition to work correctly */
4371 # if !defined(WIN32)
4372 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4373 INCPUSH_CAN_RELOCATE);
4377 #ifdef PERL_VENDORLIB_EXP
4379 /* this picks up vendorarch as well */
4380 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4382 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4384 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4385 INCPUSH_CAN_RELOCATE);
4390 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4394 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4398 s = win32_get_privlib(PERL_FS_VERSION, &len);
4400 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4403 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4405 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4409 #ifdef PERL_OTHERLIBDIRS
4410 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4411 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4412 |INCPUSH_CAN_RELOCATE);
4415 if (!TAINTING_get) {
4418 * It isn't possible to delete an environment variable with
4419 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4420 * case we treat PERL5LIB as undefined if it has a zero-length value.
4422 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4423 if (perl5lib && *perl5lib != '\0')
4427 incpush_use_sep(perl5lib, 0,
4428 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4430 /* Treat PERL5?LIB as a possible search list logical name -- the
4431 * "natural" VMS idiom for a Unix path string. We allow each
4432 * element to be a set of |-separated directories for compatibility.
4436 if (my_trnlnm("PERL5LIB",buf,0))
4438 incpush_use_sep(buf, 0,
4439 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4440 } while (my_trnlnm("PERL5LIB",buf,++idx));
4444 /* Use the ~-expanded versions of APPLLIB (undocumented),
4445 SITELIB and VENDORLIB for older versions
4448 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4449 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4452 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4453 /* Search for version-specific dirs below here */
4454 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4455 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4459 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4460 /* Search for version-specific dirs below here */
4461 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4462 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4465 #ifdef PERL_OTHERLIBDIRS
4466 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4467 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4468 |INCPUSH_CAN_RELOCATE);
4470 #endif /* !PERL_IS_MINIPERL */
4473 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4476 #if defined(DOSISH) || defined(__SYMBIAN32__)
4477 # define PERLLIB_SEP ';'
4480 # define PERLLIB_SEP '|'
4482 # define PERLLIB_SEP ':'
4485 #ifndef PERLLIB_MANGLE
4486 # define PERLLIB_MANGLE(s,n) (s)
4489 #ifndef PERL_IS_MINIPERL
4490 /* Push a directory onto @INC if it exists.
4491 Generate a new SV if we do this, to save needing to copy the SV we push
4494 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4498 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4500 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4501 S_ISDIR(tmpstatbuf.st_mode)) {
4503 dir = newSVsv(stem);
4505 /* Truncate dir back to stem. */
4506 SvCUR_set(dir, SvCUR(stem));
4513 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4515 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4518 PERL_ARGS_ASSERT_MAYBERELOCATE;
4521 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4522 defined to so something (in os2/os2.c), but the code has been
4523 this way, ignoring any possible changed of length, since
4524 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4526 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4532 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4534 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4535 sv_usepvn(libdir,unix,len);
4538 PerlIO_printf(Perl_error_log,
4539 "Failed to unixify @INC element \"%s\"\n",
4540 SvPV_nolen_const(libdir));
4544 /* Do the if() outside the #ifdef to avoid warnings about an unused
4547 #ifdef PERL_RELOCATABLE_INC
4549 * Relocatable include entries are marked with a leading .../
4552 * 0: Remove that leading ".../"
4553 * 1: Remove trailing executable name (anything after the last '/')
4554 * from the perl path to give a perl prefix
4556 * While the @INC element starts "../" and the prefix ends with a real
4557 * directory (ie not . or ..) chop that real directory off the prefix
4558 * and the leading "../" from the @INC element. ie a logical "../"
4560 * Finally concatenate the prefix and the remainder of the @INC element
4561 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4562 * generates /usr/local/lib/perl5
4564 const char *libpath = SvPVX(libdir);
4565 STRLEN libpath_len = SvCUR(libdir);
4566 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4568 SV * const caret_X = get_sv("\030", 0);
4569 /* Going to use the SV just as a scratch buffer holding a C
4575 /* $^X is *the* source of taint if tainting is on, hence
4576 SvPOK() won't be true. */
4578 assert(SvPOKp(caret_X));
4579 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4581 /* Firstly take off the leading .../
4582 If all else fail we'll do the paths relative to the current
4584 sv_chop(libdir, libpath + 4);
4585 /* Don't use SvPV as we're intentionally bypassing taining,
4586 mortal copies that the mg_get of tainting creates, and
4587 corruption that seems to come via the save stack.
4588 I guess that the save stack isn't correctly set up yet. */
4589 libpath = SvPVX(libdir);
4590 libpath_len = SvCUR(libdir);
4592 /* This would work more efficiently with memrchr, but as it's
4593 only a GNU extension we'd need to probe for it and
4594 implement our own. Not hard, but maybe not worth it? */
4596 prefix = SvPVX(prefix_sv);
4597 lastslash = strrchr(prefix, '/');
4599 /* First time in with the *lastslash = '\0' we just wipe off
4600 the trailing /perl from (say) /usr/foo/bin/perl
4604 while ((*lastslash = '\0'), /* Do that, come what may. */
4605 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4606 && (lastslash = strrchr(prefix, '/')))) {
4607 if (lastslash[1] == '\0'
4608 || (lastslash[1] == '.'
4609 && (lastslash[2] == '/' /* ends "/." */
4610 || (lastslash[2] == '/'
4611 && lastslash[3] == '/' /* or "/.." */
4613 /* Prefix ends "/" or "/." or "/..", any of which
4614 are fishy, so don't do any more logical cleanup.
4618 /* Remove leading "../" from path */
4621 /* Next iteration round the loop removes the last
4622 directory name from prefix by writing a '\0' in
4623 the while clause. */
4625 /* prefix has been terminated with a '\0' to the correct
4626 length. libpath points somewhere into the libdir SV.
4627 We need to join the 2 with '/' and drop the result into
4629 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4630 SvREFCNT_dec(libdir);
4631 /* And this is the new libdir. */
4634 (PerlProc_getuid() != PerlProc_geteuid() ||
4635 PerlProc_getgid() != PerlProc_getegid())) {
4636 /* Need to taint relocated paths if running set ID */
4637 SvTAINTED_on(libdir);
4640 SvREFCNT_dec(prefix_sv);
4648 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4650 #ifndef PERL_IS_MINIPERL
4651 const U8 using_sub_dirs
4652 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4653 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4654 const U8 add_versioned_sub_dirs
4655 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4656 const U8 add_archonly_sub_dirs
4657 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4658 #ifdef PERL_INC_VERSION_LIST
4659 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4662 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4663 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4664 AV *const inc = GvAVn(PL_incgv);
4666 PERL_ARGS_ASSERT_INCPUSH;
4669 /* Could remove this vestigial extra block, if we don't mind a lot of
4670 re-indenting diff noise. */
4672 SV *const libdir = mayberelocate(dir, len, flags);
4673 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4674 arranged to unshift #! line -I onto the front of @INC. However,
4675 -I can add version and architecture specific libraries, and they
4676 need to go first. The old code assumed that it was always
4677 pushing. Hence to make it work, need to push the architecture
4678 (etc) libraries onto a temporary array, then "unshift" that onto
4679 the front of @INC. */
4680 #ifndef PERL_IS_MINIPERL
4681 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4684 * BEFORE pushing libdir onto @INC we may first push version- and
4685 * archname-specific sub-directories.
4687 if (using_sub_dirs) {
4688 SV *subdir = newSVsv(libdir);
4689 #ifdef PERL_INC_VERSION_LIST
4690 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4691 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4692 const char * const *incver;
4695 if (add_versioned_sub_dirs) {
4696 /* .../version/archname if -d .../version/archname */
4697 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4698 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4700 /* .../version if -d .../version */
4701 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4702 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4705 #ifdef PERL_INC_VERSION_LIST
4707 for (incver = incverlist; *incver; incver++) {
4708 /* .../xxx if -d .../xxx */
4709 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4710 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4715 if (add_archonly_sub_dirs) {
4716 /* .../archname if -d .../archname */
4717 sv_catpvs(subdir, "/" ARCHNAME);
4718 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4722 assert (SvREFCNT(subdir) == 1);
4723 SvREFCNT_dec(subdir);
4725 #endif /* !PERL_IS_MINIPERL */
4726 /* finally add this lib directory at the end of @INC */
4728 #ifdef PERL_IS_MINIPERL
4729 const Size_t extra = 0;
4731 Size_t extra = av_tindex(av) + 1;
4733 av_unshift(inc, extra + push_basedir);
4735 av_store(inc, extra, libdir);
4736 #ifndef PERL_IS_MINIPERL
4738 /* av owns a reference, av_store() expects to be donated a
4739 reference, and av expects to be sane when it's cleared.
4740 If I wanted to be naughty and wrong, I could peek inside the
4741 implementation of av_clear(), realise that it uses
4742 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4743 and so directly steal from it (with a memcpy() to inc, and
4744 then memset() to NULL them out. But people copy code from the
4745 core expecting it to be best practise, so let's use the API.
4746 Although studious readers will note that I'm not checking any
4748 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4753 else if (push_basedir) {
4754 av_push(inc, libdir);
4757 if (!push_basedir) {
4758 assert (SvREFCNT(libdir) == 1);
4759 SvREFCNT_dec(libdir);
4765 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4769 /* This logic has been broken out from S_incpush(). It may be possible to
4772 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4774 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4775 * argument to incpush_use_sep. This allows creation of relocatable
4776 * Perl distributions that patch the binary at install time. Those
4777 * distributions will have to provide their own relocation tools; this
4778 * is not a feature otherwise supported by core Perl.
4780 #ifndef PERL_RELOCATABLE_INCPUSH
4787 /* Break at all separators */
4788 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4790 /* skip any consecutive separators */
4792 /* Uncomment the next line for PATH semantics */
4793 /* But you'll need to write tests */
4794 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4796 incpush(p, (STRLEN)(s - p), flags);
4801 incpush(p, (STRLEN)(end - p), flags);
4806 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4809 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4815 PERL_ARGS_ASSERT_CALL_LIST;
4817 while (av_tindex(paramList) >= 0) {
4818 cv = MUTABLE_CV(av_shift(paramList));
4820 if (paramList == PL_beginav) {
4821 /* save PL_beginav for compiler */
4822 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4824 else if (paramList == PL_checkav) {
4825 /* save PL_checkav for compiler */
4826 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4828 else if (paramList == PL_unitcheckav) {
4829 /* save PL_unitcheckav for compiler */
4830 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4840 (void)SvPV_const(atsv, len);
4842 PL_curcop = &PL_compiling;
4843 CopLINE_set(PL_curcop, oldline);
4844 if (paramList == PL_beginav)
4845 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4847 Perl_sv_catpvf(aTHX_ atsv,
4848 "%s failed--call queue aborted",
4849 paramList == PL_checkav ? "CHECK"
4850 : paramList == PL_initav ? "INIT"
4851 : paramList == PL_unitcheckav ? "UNITCHECK"
4853 while (PL_scopestack_ix > oldscope)
4856 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4863 /* my_exit() was called */
4864 while (PL_scopestack_ix > oldscope)
4867 SET_CURSTASH(PL_defstash);
4868 PL_curcop = &PL_compiling;
4869 CopLINE_set(PL_curcop, oldline);
4872 NOT_REACHED; /* NOTREACHED */
4875 PL_curcop = &PL_compiling;
4876 CopLINE_set(PL_curcop, oldline);
4879 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4888 Perl_my_exit(pTHX_ U32 status)
4890 if (PL_exit_flags & PERL_EXIT_ABORT) {
4893 if (PL_exit_flags & PERL_EXIT_WARN) {
4894 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4895 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4896 PL_exit_flags &= ~PERL_EXIT_ABORT;
4906 STATUS_EXIT_SET(status);
4913 Perl_my_failure_exit(pTHX)
4916 /* We have been called to fall on our sword. The desired exit code
4917 * should be already set in STATUS_UNIX, but could be shifted over
4918 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4921 * If an error code has not been set, then force the issue.
4923 if (MY_POSIX_EXIT) {
4925 /* According to the die_exit.t tests, if errno is non-zero */
4926 /* It should be used for the error status. */
4928 if (errno == EVMSERR) {
4929 STATUS_NATIVE = vaxc$errno;
4932 /* According to die_exit.t tests, if the child_exit code is */
4933 /* also zero, then we need to exit with a code of 255 */
4934 if ((errno != 0) && (errno < 256))
4935 STATUS_UNIX_EXIT_SET(errno);
4936 else if (STATUS_UNIX < 255) {
4937 STATUS_UNIX_EXIT_SET(255);
4942 /* The exit code could have been set by $? or vmsish which
4943 * means that it may not have fatal set. So convert
4944 * success/warning codes to fatal with out changing
4945 * the POSIX status code. The severity makes VMS native
4946 * status handling work, while UNIX mode programs use the
4947 * the POSIX exit codes.
4949 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4950 STATUS_NATIVE &= STS$M_COND_ID;
4951 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4955 /* Traditionally Perl on VMS always expects a Fatal Error. */
4956 if (vaxc$errno & 1) {
4958 /* So force success status to failure */
4959 if (STATUS_NATIVE & 1)
4964 STATUS_UNIX = EINTR; /* In case something cares */
4969 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4971 /* Encode the severity code */
4972 severity = STATUS_NATIVE & STS$M_SEVERITY;
4973 STATUS_UNIX = (severity ? severity : 1) << 8;
4975 /* Perl expects this to be a fatal error */
4976 if (severity != STS$K_SEVERE)
4985 STATUS_UNIX_SET(errno);
4987 exitstatus = STATUS_UNIX >> 8;
4988 if (exitstatus & 255)
4989 STATUS_UNIX_SET(exitstatus);
4991 STATUS_UNIX_SET(255);
4994 if (PL_exit_flags & PERL_EXIT_ABORT) {
4997 if (PL_exit_flags & PERL_EXIT_WARN) {
4998 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4999 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5000 PL_exit_flags &= ~PERL_EXIT_ABORT;
5006 S_my_exit_jump(pTHX)
5009 SvREFCNT_dec(PL_e_script);
5013 POPSTACK_TO(PL_mainstack);
5021 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5023 const char * const p = SvPVX_const(PL_e_script);
5024 const char *nl = strchr(p, '\n');
5026 PERL_UNUSED_ARG(idx);
5027 PERL_UNUSED_ARG(maxlen);
5029 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5031 filter_del(read_e_script);
5034 sv_catpvn(buf_sv, p, nl-p);
5035 sv_chop(PL_e_script, nl);
5039 /* removes boilerplate code at the end of each boot_Module xsub */
5041 Perl_xs_boot_epilog(pTHX_ const U32 ax)
5044 call_list(PL_scopestack_ix, PL_unitcheckav);
5050 * c-indentation-style: bsd
5052 * indent-tabs-mode: nil
5055 * ex: set ts=8 sts=4 sw=4 et: