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*);
309 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
310 _dyld_lookup_and_bind
311 ("__environ", (unsigned long *) &environ_pointer, NULL);
315 # ifdef USE_ENVIRON_ARRAY
316 PL_origenviron = environ;
320 /* Use sysconf(_SC_CLK_TCK) if available, if not
321 * available or if the sysconf() fails, use the HZ.
322 * The HZ if not originally defined has been by now
323 * been defined as CLK_TCK, if available. */
324 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
325 PL_clocktick = sysconf(_SC_CLK_TCK);
326 if (PL_clocktick <= 0)
330 PL_stashcache = newHV();
332 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
333 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
336 if (!PL_mmap_page_size) {
337 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
339 SETERRNO(0, SS_NORMAL);
341 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
343 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
345 if ((long) PL_mmap_page_size < 0) {
347 SV * const error = ERRSV;
348 SvUPGRADE(error, SVt_PV);
349 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
352 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
356 # ifdef HAS_GETPAGESIZE
357 PL_mmap_page_size = getpagesize();
359 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
360 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
364 if (PL_mmap_page_size <= 0)
365 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
366 (IV) PL_mmap_page_size);
368 #endif /* HAS_MMAP */
370 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
371 PL_timesbase.tms_utime = 0;
372 PL_timesbase.tms_stime = 0;
373 PL_timesbase.tms_cutime = 0;
374 PL_timesbase.tms_cstime = 0;
377 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
379 PL_registered_mros = newHV();
380 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
381 HvMAX(PL_registered_mros) = 0;
383 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
384 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
385 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
386 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
387 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
388 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
389 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
390 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
391 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
392 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
393 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
394 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
395 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
396 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
397 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
398 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
399 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
405 =for apidoc nothreadhook
407 Stub that provides thread hook for perl_destruct when there are
414 Perl_nothreadhook(pTHX)
420 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
422 Perl_dump_sv_child(pTHX_ SV *sv)
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
427 union control_un control;
430 struct cmsghdr *cmptr;
432 unsigned char buffer[256];
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
436 if(sock == -1 || debug_fd == -1)
439 PerlIO_flush(Perl_debug_log);
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
445 be open, the wait would be forever.) */
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
466 perror("Debug leaking scalars parent sendmsg failed");
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
474 /* Return protocol is
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
484 got = readv(sock, vec, 2);
487 perror("Debug leaking scalars parent read failed");
488 PerlIO_flush(PerlIO_stderr());
491 if(got < sizeof(returned_errno) + 1) {
492 perror("Debug leaking scalars parent short read");
493 PerlIO_flush(PerlIO_stderr());
498 got = read(sock, buffer + 1, *buffer);
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, Strerror(returned_errno));
521 =for apidoc perl_destruct
523 Shuts down a Perl interpreter. See L<perlembed>.
532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
534 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
539 PERL_ARGS_ASSERT_PERL_DESTRUCT;
541 PERL_UNUSED_ARG(my_perl);
544 assert(PL_scopestack_ix == 1);
546 /* wait for all pseudo-forked children to finish */
547 PERL_WAIT_FOR_CHILDREN;
549 destruct_level = PL_perl_destruct_level;
550 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
552 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
554 const int i = atoi(s);
556 if (destruct_level < i) destruct_level = i;
558 #ifdef PERL_TRACK_MEMPOOL
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
572 if (PL_endav && !PL_minus_c) {
573 PERL_SET_PHASE(PERL_PHASE_END);
574 call_list(PL_scopestack_ix, PL_endav);
580 assert(PL_scopestack_ix == 0);
582 /* Need to flush since END blocks can produce output */
585 #ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
599 if (PL_threadhook(aTHX)) {
600 /* Threads hook has vetoed further cleanup */
601 PL_veto_cleanup = TRUE;
605 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
621 perror("Debug leaking scalars fork failed");
625 /* We are the child */
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
630 /* Our success message is an integer 0, and a char 0 */
631 static const char success[sizeof(int) + 1] = {0};
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
647 f = sysconf(_SC_OPEN_MAX);
649 where = "sysconf failed";
660 union control_un control;
663 struct cmsghdr *cmptr;
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
675 vec[0].iov_base = (void*)⌖
676 vec[0].iov_len = sizeof(target);
678 got = recvmsg(sock, &msg, 0);
683 where = "recv failed";
686 if(got < sizeof(target)) {
687 where = "short recv";
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
720 PerlIO_flush(Perl_debug_log);
722 got = write(sock, &success, sizeof(success));
725 where = "write failed";
728 if(got < sizeof(success)) {
729 where = "short write";
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
741 {(void*)where, length}
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
750 _exit((got == -1) ? errno : 0);
754 PL_dumper_fd = fd[0];
759 /* We must account for everything. */
761 /* Destroy the main CV and syntax tree */
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
766 PL_curcop = &PL_compiling;
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
773 op_free(PL_main_root);
776 PL_main_start = NULL;
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
781 SvREFCNT_dec(PL_main_cv);
783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
790 PerlIO_destruct(aTHX);
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
799 /* unhook hooks which will soon be, or use, destroyed data */
800 SvREFCNT_dec(PL_warnhook);
802 SvREFCNT_dec(PL_diehook);
805 /* call exit list functions */
806 while (PL_exitlistlen-- > 0)
807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
809 Safefree(PL_exitlist);
814 SvREFCNT_dec(PL_registered_mros);
816 /* jettison our possibly duplicated environment */
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
821 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
822 if (environ != PL_origenviron && !PL_use_safe_putenv
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
831 for (i = 0; environ[i]; i++)
832 safesysfree(environ[i]);
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
837 environ = PL_origenviron;
840 #endif /* !PERL_MICRO */
842 if (destruct_level == 0) {
844 DEBUG_P(debprofdump());
846 #if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
851 CopFILE_free(&PL_compiling);
853 /* The exit() function will do everything that needs doing. */
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
878 PL_stashcache = NULL;
880 /* loosen bonds of global variables */
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
889 Safefree(PL_splitstr);
899 PL_doswitches = FALSE;
900 PL_dowarn = G_WARN_OFF;
901 #ifdef PERL_SAWAMPERSAND
902 PL_sawampersand = 0; /* must save all match strings */
906 Safefree(PL_inplace);
908 SvREFCNT_dec(PL_patchlevel);
909 SvREFCNT_dec(PL_apiversion);
912 SvREFCNT_dec(PL_e_script);
918 /* magical thingies */
920 SvREFCNT_dec(PL_ofsgv); /* *, */
923 SvREFCNT_dec(PL_ors_sv); /* $\ */
926 SvREFCNT_dec(PL_rs); /* $/ */
929 Safefree(PL_osname); /* $^O */
932 SvREFCNT_dec(PL_statname);
936 /* defgv, aka *_ should be taken care of elsewhere */
939 Safefree(PL_efloatbuf);
943 /* startup and shutdown function lists */
944 SvREFCNT_dec(PL_beginav);
945 SvREFCNT_dec(PL_beginav_save);
946 SvREFCNT_dec(PL_endav);
947 SvREFCNT_dec(PL_checkav);
948 SvREFCNT_dec(PL_checkav_save);
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
951 SvREFCNT_dec(PL_initav);
953 PL_beginav_save = NULL;
956 PL_checkav_save = NULL;
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
961 /* shortcuts just get cleared */
967 PL_last_in_gv = NULL;
975 SvREFCNT_dec(PL_envgv);
976 SvREFCNT_dec(PL_incgv);
977 SvREFCNT_dec(PL_argvgv);
978 SvREFCNT_dec(PL_replgv);
979 SvREFCNT_dec(PL_DBgv);
980 SvREFCNT_dec(PL_DBline);
981 SvREFCNT_dec(PL_DBsub);
990 SvREFCNT_dec(PL_argvout_stack);
991 PL_argvout_stack = NULL;
993 SvREFCNT_dec(PL_modglobal);
995 SvREFCNT_dec(PL_preambleav);
996 PL_preambleav = NULL;
997 SvREFCNT_dec(PL_subname);
999 #ifdef PERL_USES_PL_PIDSTATUS
1000 SvREFCNT_dec(PL_pidstatus);
1001 PL_pidstatus = NULL;
1003 SvREFCNT_dec(PL_toptarget);
1004 PL_toptarget = NULL;
1005 SvREFCNT_dec(PL_bodytarget);
1006 PL_bodytarget = NULL;
1007 PL_formtarget = NULL;
1009 /* free locale stuff */
1010 #ifdef USE_LOCALE_COLLATE
1011 Safefree(PL_collation_name);
1012 PL_collation_name = NULL;
1015 #ifdef USE_LOCALE_NUMERIC
1016 Safefree(PL_numeric_name);
1017 PL_numeric_name = NULL;
1018 SvREFCNT_dec(PL_numeric_radix_sv);
1019 PL_numeric_radix_sv = NULL;
1022 /* clear character classes */
1023 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1024 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1025 PL_utf8_swash_ptrs[i] = NULL;
1027 SvREFCNT_dec(PL_utf8_mark);
1028 SvREFCNT_dec(PL_utf8_toupper);
1029 SvREFCNT_dec(PL_utf8_totitle);
1030 SvREFCNT_dec(PL_utf8_tolower);
1031 SvREFCNT_dec(PL_utf8_tofold);
1032 SvREFCNT_dec(PL_utf8_idstart);
1033 SvREFCNT_dec(PL_utf8_idcont);
1034 SvREFCNT_dec(PL_utf8_foldable);
1035 SvREFCNT_dec(PL_utf8_foldclosures);
1036 SvREFCNT_dec(PL_AboveLatin1);
1037 SvREFCNT_dec(PL_UpperLatin1);
1038 SvREFCNT_dec(PL_Latin1);
1039 SvREFCNT_dec(PL_NonL1NonFinalFold);
1040 SvREFCNT_dec(PL_HasMultiCharFold);
1041 PL_utf8_mark = NULL;
1042 PL_utf8_toupper = NULL;
1043 PL_utf8_totitle = NULL;
1044 PL_utf8_tolower = NULL;
1045 PL_utf8_tofold = NULL;
1046 PL_utf8_idstart = NULL;
1047 PL_utf8_idcont = NULL;
1048 PL_utf8_foldclosures = NULL;
1049 PL_AboveLatin1 = NULL;
1050 PL_HasMultiCharFold = NULL;
1052 PL_NonL1NonFinalFold = NULL;
1053 PL_UpperLatin1 = NULL;
1054 for (i = 0; i < POSIX_CC_COUNT; i++) {
1055 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1056 PL_XPosix_ptrs[i] = NULL;
1059 if (!specialWARN(PL_compiling.cop_warnings))
1060 PerlMemShared_free(PL_compiling.cop_warnings);
1061 PL_compiling.cop_warnings = NULL;
1062 cophh_free(CopHINTHASH_get(&PL_compiling));
1063 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1064 CopFILE_free(&PL_compiling);
1066 /* Prepare to destruct main symbol table. */
1069 /* break ref loop *:: <=> %:: */
1070 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1073 SvREFCNT_dec(PL_curstname);
1074 PL_curstname = NULL;
1076 /* clear queued errors */
1077 SvREFCNT_dec(PL_errors);
1080 SvREFCNT_dec(PL_isarev);
1083 if (destruct_level >= 2) {
1084 if (PL_scopestack_ix != 0)
1085 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1087 (long)PL_scopestack_ix);
1088 if (PL_savestack_ix != 0)
1089 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1090 "Unbalanced saves: %ld more saves than restores\n",
1091 (long)PL_savestack_ix);
1092 if (PL_tmps_floor != -1)
1093 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1094 (long)PL_tmps_floor + 1);
1095 if (cxstack_ix != -1)
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1097 (long)cxstack_ix + 1);
1101 SvREFCNT_dec(PL_regex_padav);
1102 PL_regex_padav = NULL;
1103 PL_regex_pad = NULL;
1106 #ifdef PERL_IMPLICIT_CONTEXT
1107 /* the entries in this list are allocated via SV PVX's, so get freed
1108 * in sv_clean_all */
1109 Safefree(PL_my_cxt_list);
1112 /* Now absolutely destruct everything, somehow or other, loops or no. */
1114 /* the 2 is for PL_fdpid and PL_strtab */
1115 while (sv_clean_all() > 2)
1119 Safefree(PL_stashpad); /* must come after sv_clean_all */
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1126 #ifdef HAVE_INTERP_INTERN
1130 /* constant strings */
1131 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1132 SvREFCNT_dec(PL_sv_consts[i]);
1133 PL_sv_consts[i] = NULL;
1136 /* Destruct the global string table. */
1138 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1139 * so that sv_free() won't fail on them.
1140 * Now that the global string table is using a single hunk of memory
1141 * for both HE and HEK, we either need to explicitly unshare it the
1142 * correct way, or actually free things here.
1145 const I32 max = HvMAX(PL_strtab);
1146 HE * const * const array = HvARRAY(PL_strtab);
1147 HE *hent = array[0];
1150 if (hent && ckWARN_d(WARN_INTERNAL)) {
1151 HE * const next = HeNEXT(hent);
1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1153 "Unbalanced string table refcount: (%ld) for \"%s\"",
1154 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1161 hent = array[riter];
1166 HvARRAY(PL_strtab) = 0;
1167 HvTOTALKEYS(PL_strtab) = 0;
1169 SvREFCNT_dec(PL_strtab);
1172 /* free the pointer tables used for cloning */
1173 ptr_table_free(PL_ptr_table);
1174 PL_ptr_table = (PTR_TBL_t*)NULL;
1177 /* free special SVs */
1179 SvREFCNT(&PL_sv_yes) = 0;
1180 sv_clear(&PL_sv_yes);
1181 SvANY(&PL_sv_yes) = NULL;
1182 SvFLAGS(&PL_sv_yes) = 0;
1184 SvREFCNT(&PL_sv_no) = 0;
1185 sv_clear(&PL_sv_no);
1186 SvANY(&PL_sv_no) = NULL;
1187 SvFLAGS(&PL_sv_no) = 0;
1191 for (i=0; i<=2; i++) {
1192 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1193 sv_clear(PERL_DEBUG_PAD(i));
1194 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1195 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1199 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1200 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1202 #ifdef DEBUG_LEAKING_SCALARS
1203 if (PL_sv_count != 0) {
1208 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1209 svend = &sva[SvREFCNT(sva)];
1210 for (sv = sva + 1; sv < svend; ++sv) {
1211 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1212 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1214 " refcnt=%"UVuf pTHX__FORMAT "\n"
1215 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1217 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1219 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1221 sv->sv_debug_inpad ? "for" : "by",
1222 sv->sv_debug_optype ?
1223 PL_op_name[sv->sv_debug_optype]: "(none)",
1224 PTR2UV(sv->sv_debug_parent),
1227 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1228 Perl_dump_sv_child(aTHX_ sv);
1234 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1238 /* Wait for up to 4 seconds for child to terminate.
1239 This seems to be the least effort way of timing out on reaping
1241 struct timeval waitfor = {4, 0};
1242 int sock = PL_dumper_fd;
1246 FD_SET(sock, &rset);
1247 select(sock + 1, &rset, NULL, NULL, &waitfor);
1248 waitpid(child, &status, WNOHANG);
1253 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1259 #if defined(PERLIO_LAYERS)
1260 /* No more IO - including error messages ! */
1261 PerlIO_cleanup(aTHX);
1264 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1265 as currently layers use it rather than NULL as a marker
1266 for no arg - and will try and SvREFCNT_dec it.
1268 SvREFCNT(&PL_sv_undef) = 0;
1269 SvREADONLY_off(&PL_sv_undef);
1271 Safefree(PL_origfilename);
1272 PL_origfilename = NULL;
1273 Safefree(PL_reg_curpm);
1274 free_tied_hv_pool();
1275 Safefree(PL_op_mask);
1276 Safefree(PL_psig_name);
1277 PL_psig_name = (SV**)NULL;
1278 PL_psig_ptr = (SV**)NULL;
1280 /* We need to NULL PL_psig_pend first, so that
1281 signal handlers know not to use it */
1282 int *psig_save = PL_psig_pend;
1283 PL_psig_pend = (int*)NULL;
1284 Safefree(psig_save);
1287 TAINTING_set(FALSE);
1288 TAINT_WARN_set(FALSE);
1289 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1292 DEBUG_P(debprofdump());
1294 #ifdef USE_REENTRANT_API
1295 Perl_reentrant_free(aTHX);
1300 while (PL_regmatch_slab) {
1301 regmatch_slab *s = PL_regmatch_slab;
1302 PL_regmatch_slab = PL_regmatch_slab->next;
1306 /* As the absolutely last thing, free the non-arena SV for mess() */
1309 /* we know that type == SVt_PVMG */
1311 /* it could have accumulated taint magic */
1314 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1315 moremagic = mg->mg_moremagic;
1316 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1318 Safefree(mg->mg_ptr);
1322 /* we know that type >= SVt_PV */
1323 SvPV_free(PL_mess_sv);
1324 Safefree(SvANY(PL_mess_sv));
1325 Safefree(PL_mess_sv);
1332 =for apidoc perl_free
1334 Releases a Perl interpreter. See L<perlembed>.
1344 PERL_ARGS_ASSERT_PERL_FREE;
1346 if (PL_veto_cleanup)
1349 #ifdef PERL_TRACK_MEMPOOL
1352 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1353 * value as we're probably hunting memory leaks then
1355 if (PL_perl_destruct_level == 0) {
1356 const U32 old_debug = PL_debug;
1357 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1358 thread at thread exit. */
1360 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1361 "free this thread's memory\n");
1362 PL_debug &= ~ DEBUG_m_FLAG;
1364 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1365 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
1366 PL_debug = old_debug;
1371 #if defined(WIN32) || defined(NETWARE)
1372 # if defined(PERL_IMPLICIT_SYS)
1375 void *host = nw_internal_host;
1376 PerlMem_free(aTHXx);
1377 nw_delete_internal_host(host);
1379 void *host = w32_internal_host;
1380 PerlMem_free(aTHXx);
1381 win32_delete_internal_host(host);
1385 PerlMem_free(aTHXx);
1388 PerlMem_free(aTHXx);
1392 #if defined(USE_ITHREADS)
1393 /* provide destructors to clean up the thread key when libperl is unloaded */
1394 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1396 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1397 #pragma fini "perl_fini"
1398 #elif defined(__sun) && !defined(__GNUC__)
1399 #pragma fini (perl_fini)
1403 #if defined(__GNUC__)
1404 __attribute__((destructor))
1410 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1413 PL_curinterp && !PL_veto_cleanup)
1418 #endif /* THREADS */
1421 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1424 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1425 PL_exitlist[PL_exitlistlen].fn = fn;
1426 PL_exitlist[PL_exitlistlen].ptr = ptr;
1431 =for apidoc perl_parse
1433 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1438 #define SET_CURSTASH(newstash) \
1439 if (PL_curstash != newstash) { \
1440 SvREFCNT_dec(PL_curstash); \
1441 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1445 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1452 PERL_ARGS_ASSERT_PERL_PARSE;
1453 #ifndef MULTIPLICITY
1454 PERL_UNUSED_ARG(my_perl);
1456 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1458 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1460 if (s && (atoi(s) == 1)) {
1461 unsigned char *seed= PERL_HASH_SEED;
1462 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1463 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1464 while (seed < seed_end) {
1465 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1467 #ifdef PERL_HASH_RANDOMIZE_KEYS
1468 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1469 PL_HASH_RAND_BITS_ENABLED,
1470 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1472 PerlIO_printf(Perl_debug_log, "\n");
1475 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1479 if (PL_origalen != 0) {
1480 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1483 /* Set PL_origalen be the sum of the contiguous argv[]
1484 * elements plus the size of the env in case that it is
1485 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1486 * as the maximum modifiable length of $0. In the worst case
1487 * the area we are able to modify is limited to the size of
1488 * the original argv[0]. (See below for 'contiguous', though.)
1490 const char *s = NULL;
1492 const UV mask = ~(UV)(PTRSIZE-1);
1493 /* Do the mask check only if the args seem like aligned. */
1495 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1497 /* See if all the arguments are contiguous in memory. Note
1498 * that 'contiguous' is a loose term because some platforms
1499 * align the argv[] and the envp[]. If the arguments look
1500 * like non-aligned, assume that they are 'strictly' or
1501 * 'traditionally' contiguous. If the arguments look like
1502 * aligned, we just check that they are within aligned
1503 * PTRSIZE bytes. As long as no system has something bizarre
1504 * like the argv[] interleaved with some other data, we are
1505 * fine. (Did I just evoke Murphy's Law?) --jhi */
1506 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1508 for (i = 1; i < PL_origargc; i++) {
1509 if ((PL_origargv[i] == s + 1
1511 || PL_origargv[i] == s + 2
1516 (PL_origargv[i] > s &&
1518 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1529 #ifndef PERL_USE_SAFE_PUTENV
1530 /* Can we grab env area too to be used as the area for $0? */
1531 if (s && PL_origenviron && !PL_use_safe_putenv) {
1532 if ((PL_origenviron[0] == s + 1)
1535 (PL_origenviron[0] > s &&
1536 PL_origenviron[0] <=
1537 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1540 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1541 s = PL_origenviron[0];
1544 my_setenv("NoNe SuCh", NULL);
1545 /* Force copy of environment. */
1546 for (i = 1; PL_origenviron[i]; i++) {
1547 if (PL_origenviron[i] == s + 1
1550 (PL_origenviron[i] > s &&
1551 PL_origenviron[i] <=
1552 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 s = PL_origenviron[i];
1563 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1565 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1570 /* Come here if running an undumped a.out. */
1572 PL_origfilename = savepv(argv[0]);
1573 PL_do_undump = FALSE;
1574 cxstack_ix = -1; /* start label stack again */
1576 assert (!TAINT_get);
1580 init_postdump_symbols(argc,argv,env);
1585 op_free(PL_main_root);
1586 PL_main_root = NULL;
1588 PL_main_start = NULL;
1589 SvREFCNT_dec(PL_main_cv);
1593 oldscope = PL_scopestack_ix;
1594 PL_dowarn = G_WARN_OFF;
1599 parse_body(env,xsinit);
1600 if (PL_unitcheckav) {
1601 call_list(oldscope, PL_unitcheckav);
1604 PERL_SET_PHASE(PERL_PHASE_CHECK);
1605 call_list(oldscope, PL_checkav);
1613 /* my_exit() was called */
1614 while (PL_scopestack_ix > oldscope)
1617 SET_CURSTASH(PL_defstash);
1618 if (PL_unitcheckav) {
1619 call_list(oldscope, PL_unitcheckav);
1622 PERL_SET_PHASE(PERL_PHASE_CHECK);
1623 call_list(oldscope, PL_checkav);
1628 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1636 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1637 miniperl, and we need to see those flags reflected in the values here. */
1639 /* What this returns is subject to change. Use the public interface in Config.
1642 S_Internals_V(pTHX_ CV *cv)
1645 #ifdef LOCAL_PATCH_COUNT
1646 const int local_patch_count = LOCAL_PATCH_COUNT;
1648 const int local_patch_count = 0;
1650 const int entries = 3 + local_patch_count;
1652 static const char non_bincompat_options[] =
1659 # ifdef NO_HASH_SEED
1662 # ifdef NO_TAINT_SUPPORT
1665 # ifdef PERL_BOOL_AS_CHAR
1666 " PERL_BOOL_AS_CHAR"
1668 # ifdef PERL_DISABLE_PMC
1671 # ifdef PERL_DONT_CREATE_GVSV
1672 " PERL_DONT_CREATE_GVSV"
1674 # ifdef PERL_EXTERNAL_GLOB
1675 " PERL_EXTERNAL_GLOB"
1677 # ifdef PERL_HASH_FUNC_SIPHASH
1678 " PERL_HASH_FUNC_SIPHASH"
1680 # ifdef PERL_HASH_FUNC_SDBM
1681 " PERL_HASH_FUNC_SDBM"
1683 # ifdef PERL_HASH_FUNC_DJB2
1684 " PERL_HASH_FUNC_DJB2"
1686 # ifdef PERL_HASH_FUNC_SUPERFAST
1687 " PERL_HASH_FUNC_SUPERFAST"
1689 # ifdef PERL_HASH_FUNC_MURMUR3
1690 " PERL_HASH_FUNC_MURMUR3"
1692 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1693 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1695 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1696 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1698 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1699 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1701 # ifdef PERL_IS_MINIPERL
1704 # ifdef PERL_MALLOC_WRAP
1707 # ifdef PERL_MEM_LOG
1710 # ifdef PERL_MEM_LOG_NOIMPL
1711 " PERL_MEM_LOG_NOIMPL"
1713 # ifdef PERL_NEW_COPY_ON_WRITE
1714 " PERL_NEW_COPY_ON_WRITE"
1716 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1717 " PERL_PERTURB_KEYS_DETERMINISTIC"
1719 # ifdef PERL_PERTURB_KEYS_DISABLED
1720 " PERL_PERTURB_KEYS_DISABLED"
1722 # ifdef PERL_PERTURB_KEYS_RANDOM
1723 " PERL_PERTURB_KEYS_RANDOM"
1725 # ifdef PERL_PRESERVE_IVUV
1726 " PERL_PRESERVE_IVUV"
1728 # ifdef PERL_RELOCATABLE_INCPUSH
1729 " PERL_RELOCATABLE_INCPUSH"
1731 # ifdef PERL_USE_DEVEL
1734 # ifdef PERL_USE_SAFE_PUTENV
1735 " PERL_USE_SAFE_PUTENV"
1737 # ifdef UNLINK_ALL_VERSIONS
1738 " UNLINK_ALL_VERSIONS"
1740 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1741 " USE_ATTRIBUTES_FOR_PERLIO"
1743 # ifdef USE_FAST_STDIO
1746 # ifdef USE_HASH_SEED_EXPLICIT
1747 " USE_HASH_SEED_EXPLICIT"
1752 # ifdef USE_LOCALE_CTYPE
1755 # ifdef USE_PERL_ATOF
1758 # ifdef USE_SITECUSTOMIZE
1759 " USE_SITECUSTOMIZE"
1762 PERL_UNUSED_ARG(cv);
1763 PERL_UNUSED_ARG(items);
1765 EXTEND(SP, entries);
1767 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1768 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1769 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1773 PUSHs(Perl_newSVpvn_flags(aTHX_
1774 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1777 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1781 PUSHs(&PL_sv_undef);
1784 for (i = 1; i <= local_patch_count; i++) {
1785 /* This will be an undef, if PL_localpatches[i] is NULL. */
1786 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1792 #define INCPUSH_UNSHIFT 0x01
1793 #define INCPUSH_ADD_OLD_VERS 0x02
1794 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1795 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1796 #define INCPUSH_NOT_BASEDIR 0x10
1797 #define INCPUSH_CAN_RELOCATE 0x20
1798 #define INCPUSH_ADD_SUB_DIRS \
1799 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1802 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1806 int argc = PL_origargc;
1807 char **argv = PL_origargv;
1808 const char *scriptname = NULL;
1809 VOL bool dosearch = FALSE;
1811 bool doextract = FALSE;
1812 const char *cddir = NULL;
1813 #ifdef USE_SITECUSTOMIZE
1814 bool minus_f = FALSE;
1816 SV *linestr_sv = NULL;
1817 bool add_read_e_script = FALSE;
1818 U32 lex_start_flags = 0;
1820 PERL_SET_PHASE(PERL_PHASE_START);
1826 for (argc--,argv++; argc > 0; argc--,argv++) {
1827 if (argv[0][0] != '-' || !argv[0][1])
1833 #ifndef PERL_STRICT_CR
1857 if ((s = moreswitches(s)))
1862 #if defined(SILENT_NO_TAINT_SUPPORT)
1863 /* silently ignore */
1864 #elif defined(NO_TAINT_SUPPORT)
1865 Perl_croak_nocontext("This perl was compiled without taint support. "
1866 "Cowardly refusing to run with -t or -T flags");
1868 CHECK_MALLOC_TOO_LATE_FOR('t');
1869 if( !TAINTING_get ) {
1870 TAINT_WARN_set(TRUE);
1877 #if defined(SILENT_NO_TAINT_SUPPORT)
1878 /* silently ignore */
1879 #elif defined(NO_TAINT_SUPPORT)
1880 Perl_croak_nocontext("This perl was compiled without taint support. "
1881 "Cowardly refusing to run with -t or -T flags");
1883 CHECK_MALLOC_TOO_LATE_FOR('T');
1885 TAINT_WARN_set(FALSE);
1894 forbid_setid('e', FALSE);
1896 PL_e_script = newSVpvs("");
1897 add_read_e_script = TRUE;
1900 sv_catpv(PL_e_script, s);
1902 sv_catpv(PL_e_script, argv[1]);
1906 Perl_croak(aTHX_ "No code specified for -%c", c);
1907 sv_catpvs(PL_e_script, "\n");
1911 #ifdef USE_SITECUSTOMIZE
1917 case 'I': /* -I handled both here and in moreswitches() */
1918 forbid_setid('I', FALSE);
1919 if (!*++s && (s=argv[1]) != NULL) {
1923 STRLEN len = strlen(s);
1924 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1927 Perl_croak(aTHX_ "No directory specified for -I");
1930 forbid_setid('S', FALSE);
1939 opts_prog = newSVpvs("use Config; Config::_V()");
1943 opts_prog = Perl_newSVpvf(aTHX_
1944 "use Config; Config::config_vars(qw%c%s%c)",
1948 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1949 /* don't look for script or read stdin */
1950 scriptname = BIT_BUCKET;
1962 if (!*++s || isSPACE(*s)) {
1966 /* catch use of gnu style long options.
1967 Both of these exit immediately. */
1968 if (strEQ(s, "version"))
1970 if (strEQ(s, "help"))
1975 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1986 #ifndef SECURE_INTERNAL_GETENV
1989 (s = PerlEnv_getenv("PERL5OPT")))
1993 if (*s == '-' && *(s+1) == 'T') {
1994 #if defined(SILENT_NO_TAINT_SUPPORT)
1995 /* silently ignore */
1996 #elif defined(NO_TAINT_SUPPORT)
1997 Perl_croak_nocontext("This perl was compiled without taint support. "
1998 "Cowardly refusing to run with -t or -T flags");
2000 CHECK_MALLOC_TOO_LATE_FOR('T');
2002 TAINT_WARN_set(FALSE);
2006 char *popt_copy = NULL;
2019 if (!strchr("CDIMUdmtwW", *s))
2020 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2024 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2025 s = popt_copy + (s - d);
2033 #if defined(SILENT_NO_TAINT_SUPPORT)
2034 /* silently ignore */
2035 #elif defined(NO_TAINT_SUPPORT)
2036 Perl_croak_nocontext("This perl was compiled without taint support. "
2037 "Cowardly refusing to run with -t or -T flags");
2039 if( !TAINTING_get) {
2040 TAINT_WARN_set(TRUE);
2052 /* Set $^X early so that it can be used for relocatable paths in @INC */
2053 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2054 assert (!TAINT_get);
2059 #if defined(USE_SITECUSTOMIZE)
2061 /* The games with local $! are to avoid setting errno if there is no
2062 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2063 ie a q() operator with a NUL byte as a the delimiter. This avoids
2064 problems with pathnames containing (say) ' */
2065 # ifdef PERL_IS_MINIPERL
2066 AV *const inc = GvAV(PL_incgv);
2067 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2070 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2071 it should be reported immediately as a build failure. */
2072 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2074 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2079 /* SITELIB_EXP is a function call on Win32. */
2080 const char *const raw_sitelib = SITELIB_EXP;
2082 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2083 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2084 INCPUSH_CAN_RELOCATE);
2085 const char *const sitelib = SvPVX(sitelib_sv);
2086 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2088 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2091 assert (SvREFCNT(sitelib_sv) == 1);
2092 SvREFCNT_dec(sitelib_sv);
2099 scriptname = argv[0];
2102 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2104 else if (scriptname == NULL) {
2106 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2112 assert (!TAINT_get);
2116 bool suidscript = FALSE;
2118 rsfp = open_script(scriptname, dosearch, &suidscript);
2120 rsfp = PerlIO_stdin();
2121 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2124 validate_suid(rsfp);
2127 # if defined(SIGCHLD) || defined(SIGCLD)
2130 # define SIGCHLD SIGCLD
2132 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2133 if (sigstate == (Sighandler_t) SIG_IGN) {
2134 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2135 "Can't ignore signal CHLD, forcing to default");
2136 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2144 /* This will croak if suidscript is true, as -x cannot be used with
2146 forbid_setid('x', suidscript);
2147 /* Hence you can't get here if suidscript is true */
2149 linestr_sv = newSV_type(SVt_PV);
2150 lex_start_flags |= LEX_START_COPIED;
2151 find_beginning(linestr_sv, rsfp);
2152 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2153 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2157 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2158 CvUNIQUE_on(PL_compcv);
2160 CvPADLIST(PL_compcv) = pad_new(0);
2162 PL_isarev = newHV();
2165 boot_core_UNIVERSAL();
2167 newXS("Internals::V", S_Internals_V, __FILE__);
2170 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2172 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2178 # ifdef HAS_SOCKS5_INIT
2179 socks5_init(argv[0]);
2185 init_predump_symbols();
2186 /* init_postdump_symbols not currently designed to be called */
2187 /* more than once (ENV isn't cleared first, for example) */
2188 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2190 init_postdump_symbols(argc,argv,env);
2192 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2193 * or explicitly in some platforms.
2194 * locale.c:Perl_init_i18nl10n() if the environment
2195 * look like the user wants to use UTF-8. */
2196 #if defined(__SYMBIAN32__)
2197 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2199 # ifndef PERL_IS_MINIPERL
2201 /* Requires init_predump_symbols(). */
2202 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2207 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2208 * and the default open disciplines. */
2209 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2210 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2212 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2213 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2214 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2216 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2217 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2218 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2220 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2221 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2222 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2224 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2225 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2228 sv_setpvs(sv, ":utf8\0:utf8");
2230 sv_setpvs(sv, ":utf8\0");
2233 sv_setpvs(sv, "\0:utf8");
2242 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2243 if (strEQ(s, "unsafe"))
2244 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2245 else if (strEQ(s, "safe"))
2246 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2248 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2255 if (!TAINTING_get &&
2256 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2260 PL_xmlfp = PerlIO_stdout();
2262 PL_xmlfp = PerlIO_open(s, "w");
2264 Perl_croak(aTHX_ "Can't open %s", s);
2266 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2272 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2273 PL_madskills = atoi(s);
2274 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2279 lex_start(linestr_sv, rsfp, lex_start_flags);
2280 SvREFCNT_dec(linestr_sv);
2282 PL_subname = newSVpvs("main");
2284 if (add_read_e_script)
2285 filter_add(read_e_script, NULL);
2287 /* now parse the script */
2289 SETERRNO(0,SS_NORMAL);
2290 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2292 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2294 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2298 CopLINE_set(PL_curcop, 0);
2299 SET_CURSTASH(PL_defstash);
2301 SvREFCNT_dec(PL_e_script);
2309 SAVECOPFILE(PL_curcop);
2310 SAVECOPLINE(PL_curcop);
2311 gv_check(PL_defstash);
2320 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2321 dump_mstats("after compilation:");
2326 PL_restartjmpenv = NULL;
2332 =for apidoc perl_run
2334 Tells a Perl interpreter to run. See L<perlembed>.
2347 PERL_ARGS_ASSERT_PERL_RUN;
2348 #ifndef MULTIPLICITY
2349 PERL_UNUSED_ARG(my_perl);
2352 oldscope = PL_scopestack_ix;
2360 cxstack_ix = -1; /* start context stack again */
2362 case 0: /* normal completion */
2366 case 2: /* my_exit() */
2367 while (PL_scopestack_ix > oldscope)
2370 SET_CURSTASH(PL_defstash);
2371 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2372 PL_endav && !PL_minus_c) {
2373 PERL_SET_PHASE(PERL_PHASE_END);
2374 call_list(oldscope, PL_endav);
2377 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2378 dump_mstats("after execution: ");
2384 POPSTACK_TO(PL_mainstack);
2387 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2398 S_run_body(pTHX_ I32 oldscope)
2401 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2402 PL_sawampersand ? "Enabling" : "Omitting",
2403 (unsigned int)(PL_sawampersand)));
2405 if (!PL_restartop) {
2409 exit(0); /* less likely to core dump than my_exit(0) */
2413 if (DEBUG_x_TEST || DEBUG_B_TEST)
2414 dump_all_perl(!DEBUG_B_TEST);
2416 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2420 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2423 if (PERLDB_SINGLE && PL_DBsingle)
2424 sv_setiv(PL_DBsingle, 1);
2426 PERL_SET_PHASE(PERL_PHASE_INIT);
2427 call_list(oldscope, PL_initav);
2429 #ifdef PERL_DEBUG_READONLY_OPS
2430 if (PL_main_root && PL_main_root->op_slabbed)
2431 Slab_to_ro(OpSLAB(PL_main_root));
2437 PERL_SET_PHASE(PERL_PHASE_RUN);
2440 PL_restartjmpenv = NULL;
2441 PL_op = PL_restartop;
2445 else if (PL_main_start) {
2446 CvDEPTH(PL_main_cv) = 1;
2447 PL_op = PL_main_start;
2451 assert(0); /* NOTREACHED */
2455 =head1 SV Manipulation Functions
2457 =for apidoc p||get_sv
2459 Returns the SV of the specified Perl scalar. C<flags> are passed to
2460 C<gv_fetchpv>. If C<GV_ADD> is set and the
2461 Perl variable does not exist then it will be created. If C<flags> is zero
2462 and the variable does not exist then NULL is returned.
2468 Perl_get_sv(pTHX_ const char *name, I32 flags)
2472 PERL_ARGS_ASSERT_GET_SV;
2474 gv = gv_fetchpv(name, flags, SVt_PV);
2481 =head1 Array Manipulation Functions
2483 =for apidoc p||get_av
2485 Returns the AV of the specified Perl global or package array with the given
2486 name (so it won't work on lexical variables). C<flags> are passed
2487 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2488 Perl variable does not exist then it will be created. If C<flags> is zero
2489 and the variable does not exist then NULL is returned.
2491 Perl equivalent: C<@{"$name"}>.
2497 Perl_get_av(pTHX_ const char *name, I32 flags)
2499 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2501 PERL_ARGS_ASSERT_GET_AV;
2511 =head1 Hash Manipulation Functions
2513 =for apidoc p||get_hv
2515 Returns the HV of the specified Perl hash. C<flags> are passed to
2516 C<gv_fetchpv>. If C<GV_ADD> is set and the
2517 Perl variable does not exist then it will be created. If C<flags> is zero
2518 and the variable does not exist then NULL is returned.
2524 Perl_get_hv(pTHX_ const char *name, I32 flags)
2526 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2528 PERL_ARGS_ASSERT_GET_HV;
2538 =head1 CV Manipulation Functions
2540 =for apidoc p||get_cvn_flags
2542 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2543 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2544 exist then it will be declared (which has the same effect as saying
2545 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2546 then NULL is returned.
2548 =for apidoc p||get_cv
2550 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2556 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2558 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2560 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2562 /* XXX this is probably not what they think they're getting.
2563 * It has the same effect as "sub name;", i.e. just a forward
2565 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2566 return newSTUB(gv,0);
2573 /* Nothing in core calls this now, but we can't replace it with a macro and
2574 move it to mathoms.c as a macro would evaluate name twice. */
2576 Perl_get_cv(pTHX_ const char *name, I32 flags)
2578 PERL_ARGS_ASSERT_GET_CV;
2580 return get_cvn_flags(name, strlen(name), flags);
2583 /* Be sure to refetch the stack pointer after calling these routines. */
2587 =head1 Callback Functions
2589 =for apidoc p||call_argv
2591 Performs a callback to the specified named and package-scoped Perl subroutine
2592 with C<argv> (a NULL-terminated array of strings) as arguments. See
2595 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2601 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2603 /* See G_* flags in cop.h */
2604 /* null terminated arg list */
2609 PERL_ARGS_ASSERT_CALL_ARGV;
2614 mXPUSHs(newSVpv(*argv,0));
2619 return call_pv(sub_name, flags);
2623 =for apidoc p||call_pv
2625 Performs a callback to the specified Perl sub. See L<perlcall>.
2631 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2632 /* name of the subroutine */
2633 /* See G_* flags in cop.h */
2635 PERL_ARGS_ASSERT_CALL_PV;
2637 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2641 =for apidoc p||call_method
2643 Performs a callback to the specified Perl method. The blessed object must
2644 be on the stack. See L<perlcall>.
2650 Perl_call_method(pTHX_ const char *methname, I32 flags)
2651 /* name of the subroutine */
2652 /* See G_* flags in cop.h */
2656 PERL_ARGS_ASSERT_CALL_METHOD;
2658 len = strlen(methname);
2659 sv = flags & G_METHOD_NAMED
2660 ? sv_2mortal(newSVpvn_share(methname, len,0))
2661 : newSVpvn_flags(methname, len, SVs_TEMP);
2663 return call_sv(sv, flags | G_METHOD);
2666 /* May be called with any of a CV, a GV, or an SV containing the name. */
2668 =for apidoc p||call_sv
2670 Performs a callback to the Perl sub whose name is in the SV. See
2677 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2678 /* See G_* flags in cop.h */
2681 LOGOP myop; /* fake syntax tree node */
2687 bool oldcatch = CATCH_GET;
2689 OP* const oldop = PL_op;
2692 PERL_ARGS_ASSERT_CALL_SV;
2694 if (flags & G_DISCARD) {
2698 if (!(flags & G_WANT)) {
2699 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2704 Zero(&myop, 1, LOGOP);
2705 if (!(flags & G_NOARGS))
2706 myop.op_flags |= OPf_STACKED;
2707 myop.op_flags |= OP_GIMME_REVERSE(flags);
2711 EXTEND(PL_stack_sp, 1);
2712 if (!(flags & G_METHOD_NAMED))
2713 *++PL_stack_sp = sv;
2715 oldscope = PL_scopestack_ix;
2717 if (PERLDB_SUB && PL_curstash != PL_debstash
2718 /* Handle first BEGIN of -d. */
2719 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2720 /* Try harder, since this may have been a sighandler, thus
2721 * curstash may be meaningless. */
2722 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2723 && !(flags & G_NODEBUG))
2724 myop.op_private |= OPpENTERSUB_DB;
2726 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2727 if ( flags & G_METHOD_NAMED ) {
2728 Zero(&method_svop, 1, SVOP);
2729 method_svop.op_next = (OP*)&myop;
2730 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2731 method_svop.op_type = OP_METHOD_NAMED;
2732 method_svop.op_sv = sv;
2733 PL_op = (OP*)&method_svop;
2735 Zero(&method_unop, 1, UNOP);
2736 method_unop.op_next = (OP*)&myop;
2737 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2738 method_unop.op_type = OP_METHOD;
2739 PL_op = (OP*)&method_unop;
2741 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2742 myop.op_type = OP_ENTERSUB;
2746 if (!(flags & G_EVAL)) {
2748 CALL_BODY_SUB((OP*)&myop);
2749 retval = PL_stack_sp - (PL_stack_base + oldmark);
2750 CATCH_SET(oldcatch);
2753 myop.op_other = (OP*)&myop;
2755 create_eval_scope(flags|G_FAKINGEVAL);
2763 CALL_BODY_SUB((OP*)&myop);
2764 retval = PL_stack_sp - (PL_stack_base + oldmark);
2765 if (!(flags & G_KEEPERR)) {
2773 /* my_exit() was called */
2774 SET_CURSTASH(PL_defstash);
2778 assert(0); /* NOTREACHED */
2781 PL_restartjmpenv = NULL;
2782 PL_op = PL_restartop;
2786 PL_stack_sp = PL_stack_base + oldmark;
2787 if ((flags & G_WANT) == G_ARRAY)
2791 *++PL_stack_sp = &PL_sv_undef;
2796 if (PL_scopestack_ix > oldscope)
2797 delete_eval_scope();
2801 if (flags & G_DISCARD) {
2802 PL_stack_sp = PL_stack_base + oldmark;
2811 /* Eval a string. The G_EVAL flag is always assumed. */
2814 =for apidoc p||eval_sv
2816 Tells Perl to C<eval> the string in the SV. It supports the same flags
2817 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2823 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2825 /* See G_* flags in cop.h */
2829 UNOP myop; /* fake syntax tree node */
2830 VOL I32 oldmark = SP - PL_stack_base;
2833 OP* const oldop = PL_op;
2836 PERL_ARGS_ASSERT_EVAL_SV;
2838 if (flags & G_DISCARD) {
2845 Zero(&myop, 1, UNOP);
2846 EXTEND(PL_stack_sp, 1);
2847 *++PL_stack_sp = sv;
2849 if (!(flags & G_NOARGS))
2850 myop.op_flags = OPf_STACKED;
2851 myop.op_type = OP_ENTEREVAL;
2852 myop.op_flags |= OP_GIMME_REVERSE(flags);
2853 if (flags & G_KEEPERR)
2854 myop.op_flags |= OPf_SPECIAL;
2856 if (flags & G_RE_REPARSING)
2857 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2859 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2860 * before a PUSHEVAL, which corrupts the stack after a croak */
2861 TAINT_PROPER("eval_sv()");
2867 if (PL_op == (OP*)(&myop)) {
2868 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2870 goto fail; /* failed in compilation */
2873 retval = PL_stack_sp - (PL_stack_base + oldmark);
2874 if (!(flags & G_KEEPERR)) {
2882 /* my_exit() was called */
2883 SET_CURSTASH(PL_defstash);
2887 assert(0); /* NOTREACHED */
2890 PL_restartjmpenv = NULL;
2891 PL_op = PL_restartop;
2896 PL_stack_sp = PL_stack_base + oldmark;
2897 if ((flags & G_WANT) == G_ARRAY)
2901 *++PL_stack_sp = &PL_sv_undef;
2907 if (flags & G_DISCARD) {
2908 PL_stack_sp = PL_stack_base + oldmark;
2918 =for apidoc p||eval_pv
2920 Tells Perl to C<eval> the given string and return an SV* result.
2926 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2929 SV* sv = newSVpv(p, 0);
2931 PERL_ARGS_ASSERT_EVAL_PV;
2933 eval_sv(sv, G_SCALAR);
2942 /* just check empty string or undef? */
2943 if (croak_on_error) {
2944 SV * const errsv = ERRSV;
2945 if(SvTRUE_NN(errsv))
2946 /* replace with croak_sv? */
2947 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2953 /* Require a module. */
2956 =head1 Embedding Functions
2958 =for apidoc p||require_pv
2960 Tells Perl to C<require> the file named by the string argument. It is
2961 analogous to the Perl code C<eval "require '$file'">. It's even
2962 implemented that way; consider using load_module instead.
2967 Perl_require_pv(pTHX_ const char *pv)
2973 PERL_ARGS_ASSERT_REQUIRE_PV;
2975 PUSHSTACKi(PERLSI_REQUIRE);
2976 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2977 eval_sv(sv_2mortal(sv), G_DISCARD);
2982 S_usage(pTHX) /* XXX move this out into a module ? */
2984 /* This message really ought to be max 23 lines.
2985 * Removed -h because the user already knows that option. Others? */
2987 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2988 minimum of 509 character string literals. */
2989 static const char * const usage_msg[] = {
2990 " -0[octal] specify record separator (\\0, if no argument)\n"
2991 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2992 " -C[number/list] enables the listed Unicode features\n"
2993 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2994 " -d[:debugger] run program under debugger\n"
2995 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2996 " -e program one line of program (several -e's allowed, omit programfile)\n"
2997 " -E program like -e, but enables all optional features\n"
2998 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2999 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3000 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3001 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3002 " -l[octal] enable line ending processing, specifies line terminator\n"
3003 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3004 " -n assume \"while (<>) { ... }\" loop around program\n"
3005 " -p assume loop like -n but print line also, like sed\n"
3006 " -s enable rudimentary parsing for switches after programfile\n"
3007 " -S look for programfile using PATH environment variable\n",
3008 " -t enable tainting warnings\n"
3009 " -T enable tainting checks\n"
3010 " -u dump core after parsing program\n"
3011 " -U allow unsafe operations\n"
3012 " -v print version, patchlevel and license\n"
3013 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3014 " -w enable many useful warnings\n"
3015 " -W enable all warnings\n"
3016 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3017 " -X disable all warnings\n"
3019 "Run 'perldoc perl' for more help with Perl.\n\n",
3022 const char * const *p = usage_msg;
3023 PerlIO *out = PerlIO_stdout();
3026 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3029 PerlIO_puts(out, *p++);
3033 /* convert a string of -D options (or digits) into an int.
3034 * sets *s to point to the char after the options */
3038 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3040 static const char * const usage_msgd[] = {
3041 " Debugging flag values: (see also -d)\n"
3042 " p Tokenizing and parsing (with v, displays parse stack)\n"
3043 " s Stack snapshots (with v, displays all stacks)\n"
3044 " l Context (loop) stack processing\n"
3045 " t Trace execution\n"
3046 " o Method and overloading resolution\n",
3047 " c String/numeric conversions\n"
3048 " P Print profiling info, source file input state\n"
3049 " m Memory and SV allocation\n"
3050 " f Format processing\n"
3051 " r Regular expression parsing and execution\n"
3052 " x Syntax tree dump\n",
3053 " u Tainting checks\n"
3054 " H Hash dump -- usurps values()\n"
3055 " X Scratchpad allocation\n"
3057 " S Op slab allocation\n"
3059 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3060 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3061 " v Verbose: use in conjunction with other flags\n"
3062 " C Copy On Write\n"
3063 " A Consistency checks on internal structures\n"
3064 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3065 " M trace smart match resolution\n"
3066 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3067 " L trace some locale setting information--for Perl core development\n",
3072 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3075 /* if adding extra options, remember to update DEBUG_MASK */
3076 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3078 for (; isWORDCHAR(**s); (*s)++) {
3079 const char * const d = strchr(debopts,**s);
3081 i |= 1 << (d - debopts);
3082 else if (ckWARN_d(WARN_DEBUGGING))
3083 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3084 "invalid option -D%c, use -D'' to see choices\n", **s);
3087 else if (isDIGIT(**s)) {
3089 for (; isWORDCHAR(**s); (*s)++) ;
3091 else if (givehelp) {
3092 const char *const *p = usage_msgd;
3093 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3096 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3097 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3098 "-Dp not implemented on this platform\n");
3104 /* This routine handles any switches that can be given during run */
3107 Perl_moreswitches(pTHX_ const char *s)
3111 const char option = *s; /* used to remember option in -m/-M code */
3113 PERL_ARGS_ASSERT_MORESWITCHES;
3121 SvREFCNT_dec(PL_rs);
3122 if (s[1] == 'x' && s[2]) {
3123 const char *e = s+=2;
3129 flags = PERL_SCAN_SILENT_ILLDIGIT;
3130 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3131 if (s + numlen < e) {
3132 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3136 PL_rs = newSVpvs("");
3137 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3138 tmps = (U8*)SvPVX(PL_rs);
3139 uvchr_to_utf8(tmps, rschar);
3140 SvCUR_set(PL_rs, UNISKIP(rschar));
3145 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3146 if (rschar & ~((U8)~0))
3147 PL_rs = &PL_sv_undef;
3148 else if (!rschar && numlen >= 2)
3149 PL_rs = newSVpvs("");
3151 char ch = (char)rschar;
3152 PL_rs = newSVpvn(&ch, 1);
3155 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3160 PL_unicode = parse_unicode_opts( (const char **)&s );
3161 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3169 while (*s && !isSPACE(*s)) ++s;
3170 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3182 forbid_setid('d', FALSE);
3185 /* -dt indicates to the debugger that threads will be used */
3186 if (*s == 't' && !isWORDCHAR(s[1])) {
3188 my_setenv("PERL5DB_THREADED", "1");
3191 /* The following permits -d:Mod to accepts arguments following an =
3192 in the fashion that -MSome::Mod does. */
3193 if (*s == ':' || *s == '=') {
3200 sv = newSVpvs("no Devel::");
3202 sv = newSVpvs("use Devel::");
3206 end = s + strlen(s);
3208 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3209 while(isWORDCHAR(*s) || *s==':') ++s;
3211 sv_catpvn(sv, start, end - start);
3213 sv_catpvn(sv, start, s-start);
3214 /* Don't use NUL as q// delimiter here, this string goes in the
3216 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3219 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3223 PL_perldb = PERLDB_ALL;
3230 forbid_setid('D', FALSE);
3232 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3233 #else /* !DEBUGGING */
3234 if (ckWARN_d(WARN_DEBUGGING))
3235 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3236 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3237 for (s++; isWORDCHAR(*s); s++) ;
3244 Safefree(PL_inplace);
3245 #if defined(__CYGWIN__) /* do backup extension automagically */
3246 if (*(s+1) == '\0') {
3247 PL_inplace = savepvs(".bak");
3250 #endif /* __CYGWIN__ */
3252 const char * const start = ++s;
3253 while (*s && !isSPACE(*s))
3256 PL_inplace = savepvn(start, s - start);
3260 if (*s == '-') /* Additional switches on #! line. */
3264 case 'I': /* -I handled both here and in parse_body() */
3265 forbid_setid('I', FALSE);
3267 while (*s && isSPACE(*s))
3272 /* ignore trailing spaces (possibly followed by other switches) */
3274 for (e = p; *e && !isSPACE(*e); e++) ;
3278 } while (*p && *p != '-');
3280 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3286 Perl_croak(aTHX_ "No directory specified for -I");
3292 SvREFCNT_dec(PL_ors_sv);
3298 PL_ors_sv = newSVpvs("\n");
3299 numlen = 3 + (*s == '0');
3300 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3304 if (RsPARA(PL_rs)) {
3305 PL_ors_sv = newSVpvs("\n\n");
3308 PL_ors_sv = newSVsv(PL_rs);
3313 forbid_setid('M', FALSE); /* XXX ? */
3316 forbid_setid('m', FALSE); /* XXX ? */
3321 const char *use = "use ";
3323 /* -M-foo == 'no foo' */
3324 /* Leading space on " no " is deliberate, to make both
3325 possibilities the same length. */
3326 if (*s == '-') { use = " no "; ++s; }
3327 sv = newSVpvn(use,4);
3329 /* We allow -M'Module qw(Foo Bar)' */
3330 while(isWORDCHAR(*s) || *s==':') {
3339 Perl_croak(aTHX_ "Module name required with -%c option",
3342 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3343 "contains single ':'",
3344 (int)(s - start), start, option);
3345 end = s + strlen(s);
3347 sv_catpvn(sv, start, end - start);
3348 if (option == 'm') {
3350 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3351 sv_catpvs( sv, " ()");
3354 sv_catpvn(sv, start, s-start);
3355 /* Use NUL as q''-delimiter. */
3356 sv_catpvs(sv, " split(/,/,q\0");
3358 sv_catpvn(sv, s, end - s);
3359 sv_catpvs(sv, "\0)");
3362 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3365 Perl_croak(aTHX_ "Missing argument to -%c", option);
3376 forbid_setid('s', FALSE);
3377 PL_doswitches = TRUE;
3382 #if defined(SILENT_NO_TAINT_SUPPORT)
3383 /* silently ignore */
3384 #elif defined(NO_TAINT_SUPPORT)
3385 Perl_croak_nocontext("This perl was compiled without taint support. "
3386 "Cowardly refusing to run with -t or -T flags");
3394 PL_do_undump = TRUE;
3404 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3405 PL_dowarn |= G_WARN_ON;
3410 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3411 if (!specialWARN(PL_compiling.cop_warnings))
3412 PerlMemShared_free(PL_compiling.cop_warnings);
3413 PL_compiling.cop_warnings = pWARN_ALL ;
3417 PL_dowarn = G_WARN_ALL_OFF;
3418 if (!specialWARN(PL_compiling.cop_warnings))
3419 PerlMemShared_free(PL_compiling.cop_warnings);
3420 PL_compiling.cop_warnings = pWARN_NONE ;
3427 if (s[0] == '-') /* Additional switches on #! line. */
3432 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3438 #ifdef ALTERNATE_SHEBANG
3439 case 'S': /* OS/2 needs -S on "extproc" line. */
3442 case 'e': case 'f': case 'x': case 'E':
3443 #ifndef ALTERNATE_SHEBANG
3447 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3450 "Unrecognized switch: -%.1s (-h will show valid options)",s
3460 PerlIO * PIO_stdout;
3462 const char * const level_str = "v" PERL_VERSION_STRING;
3463 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3464 #ifdef PERL_PATCHNUM
3466 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3467 static const char num [] = PERL_PATCHNUM "*";
3469 static const char num [] = PERL_PATCHNUM;
3472 const STRLEN num_len = sizeof(num)-1;
3473 /* A very advanced compiler would fold away the strnEQ
3474 and this whole conditional, but most (all?) won't do it.
3475 SV level could also be replaced by with preprocessor
3478 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3479 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3480 of the interp so it might contain format characters
3482 level = newSVpvn(num, num_len);
3484 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3488 SV* level = newSVpvn(level_str, level_len);
3489 #endif /* #ifdef PERL_PATCHNUM */
3490 PIO_stdout = PerlIO_stdout();
3491 PerlIO_printf(PIO_stdout,
3492 "\nThis is perl " STRINGIFY(PERL_REVISION)
3493 ", version " STRINGIFY(PERL_VERSION)
3494 ", subversion " STRINGIFY(PERL_SUBVERSION)
3495 " (%"SVf") built for " ARCHNAME, level
3497 SvREFCNT_dec_NN(level);
3499 #if defined(LOCAL_PATCH_COUNT)
3500 if (LOCAL_PATCH_COUNT > 0)
3501 PerlIO_printf(PIO_stdout,
3502 "\n(with %d registered patch%s, "
3503 "see perl -V for more detail)",
3505 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3508 PerlIO_printf(PIO_stdout,
3509 "\n\nCopyright 1987-2014, Larry Wall\n");
3511 PerlIO_printf(PIO_stdout,
3512 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3515 PerlIO_printf(PIO_stdout,
3516 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3517 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3520 PerlIO_printf(PIO_stdout,
3521 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3522 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3525 PerlIO_printf(PIO_stdout,
3526 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3529 PerlIO_printf(PIO_stdout,
3530 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3533 PerlIO_printf(PIO_stdout,
3534 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3537 PerlIO_printf(PIO_stdout,
3538 "WINCE port by Rainer Keuchel, 2001-2002\n"
3539 "Built on " __DATE__ " " __TIME__ "\n\n");
3542 #ifdef __SYMBIAN32__
3543 PerlIO_printf(PIO_stdout,
3544 "Symbian port by Nokia, 2004-2005\n");
3546 #ifdef BINARY_BUILD_NOTICE
3547 BINARY_BUILD_NOTICE;
3549 PerlIO_printf(PIO_stdout,
3551 Perl may be copied only under the terms of either the Artistic License or the\n\
3552 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3553 Complete documentation for Perl, including FAQ lists, should be found on\n\
3554 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3555 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3559 /* compliments of Tom Christiansen */
3561 /* unexec() can be found in the Gnu emacs distribution */
3562 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3565 #include <lib$routines.h>
3569 Perl_my_unexec(pTHX)
3571 PERL_UNUSED_CONTEXT;
3573 SV * prog = newSVpv(BIN_EXP, 0);
3574 SV * file = newSVpv(PL_origfilename, 0);
3578 sv_catpvs(prog, "/perl");
3579 sv_catpvs(file, ".perldump");
3581 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3582 /* unexec prints msg to stderr in case of failure */
3583 PerlProc_exit(status);
3586 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3587 # elif defined(WIN32) || defined(__CYGWIN__)
3588 Perl_croak(aTHX_ "dump is not supported");
3590 ABORT(); /* for use with undump */
3595 /* initialize curinterp */
3601 # define PERLVAR(prefix,var,type)
3602 # define PERLVARA(prefix,var,n,type)
3603 # if defined(PERL_IMPLICIT_CONTEXT)
3604 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3605 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3607 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3608 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3610 # include "intrpvar.h"
3616 # define PERLVAR(prefix,var,type)
3617 # define PERLVARA(prefix,var,n,type)
3618 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3619 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3620 # include "intrpvar.h"
3630 S_init_main_stash(pTHX)
3635 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3636 /* We know that the string "main" will be in the global shared string
3637 table, so it's a small saving to use it rather than allocate another
3639 PL_curstname = newSVpvs_share("main");
3640 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3641 /* If we hadn't caused another reference to "main" to be in the shared
3642 string table above, then it would be worth reordering these two,
3643 because otherwise all we do is delete "main" from it as a consequence
3644 of the SvREFCNT_dec, only to add it again with hv_name_set */
3645 SvREFCNT_dec(GvHV(gv));
3646 hv_name_set(PL_defstash, "main", 4, 0);
3647 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3649 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3651 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3652 GvMULTI_on(PL_incgv);
3653 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3654 SvREFCNT_inc_simple_void(PL_hintgv);
3655 GvMULTI_on(PL_hintgv);
3656 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3657 SvREFCNT_inc_simple_void(PL_defgv);
3658 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3659 SvREFCNT_inc_simple_void(PL_errgv);
3660 GvMULTI_on(PL_errgv);
3661 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3662 SvREFCNT_inc_simple_void(PL_replgv);
3663 GvMULTI_on(PL_replgv);
3664 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3665 #ifdef PERL_DONT_CREATE_GVSV
3668 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3670 SET_CURSTASH(PL_defstash);
3671 CopSTASH_set(&PL_compiling, PL_defstash);
3672 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3673 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3675 /* We must init $/ before switches are processed. */
3676 sv_setpvs(get_sv("/", GV_ADD), "\n");
3680 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3683 PerlIO *rsfp = NULL;
3688 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3691 PL_origfilename = savepvs("-e");
3694 /* if find_script() returns, it returns a malloc()-ed value */
3695 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3697 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3698 const char *s = scriptname + 8;
3704 * Tell apart "normal" usage of fdscript, e.g.
3705 * with bash on FreeBSD:
3706 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3707 * from usage in suidperl.
3708 * Does any "normal" usage leave garbage after the number???
3709 * Is it a mistake to use a similar /dev/fd/ construct for
3714 * Be supersafe and do some sanity-checks.
3715 * Still, can we be sure we got the right thing?
3718 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3721 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3723 scriptname = savepv(s + 1);
3724 Safefree(PL_origfilename);
3725 PL_origfilename = (char *)scriptname;
3730 CopFILE_free(PL_curcop);
3731 CopFILE_set(PL_curcop, PL_origfilename);
3732 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3733 scriptname = (char *)"";
3734 if (fdscript >= 0) {
3735 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3737 else if (!*scriptname) {
3738 forbid_setid(0, *suidscript);
3742 #ifdef FAKE_BIT_BUCKET
3743 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3744 * is called) and still have the "-e" work. (Believe it or not,
3745 * a /dev/null is required for the "-e" to work because source
3746 * filter magic is used to implement it. ) This is *not* a general
3747 * replacement for a /dev/null. What we do here is create a temp
3748 * file (an empty file), open up that as the script, and then
3749 * immediately close and unlink it. Close enough for jazz. */
3750 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3751 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3752 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3753 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3754 FAKE_BIT_BUCKET_TEMPLATE
3756 const char * const err = "Failed to create a fake bit bucket";
3757 if (strEQ(scriptname, BIT_BUCKET)) {
3758 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3759 int old_umask = umask(0600);
3760 int tmpfd = mkstemp(tmpname);
3763 scriptname = tmpname;
3766 Perl_croak(aTHX_ err);
3769 scriptname = mktemp(tmpname);
3771 Perl_croak(aTHX_ err);
3776 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3777 #ifdef FAKE_BIT_BUCKET
3778 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3779 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3780 && strlen(scriptname) == sizeof(tmpname) - 1) {
3783 scriptname = BIT_BUCKET;
3787 /* PSz 16 Sep 03 Keep neat error message */
3789 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3791 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3792 CopFILE(PL_curcop), Strerror(errno));
3794 fd = PerlIO_fileno(rsfp);
3795 #if defined(HAS_FCNTL) && defined(F_SETFD)
3797 /* ensure close-on-exec */
3798 if (fcntl(fd, F_SETFD, 1) < 0) {
3799 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3800 CopFILE(PL_curcop), Strerror(errno));
3806 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3807 && S_ISDIR(tmpstatbuf.st_mode)))
3808 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3816 * I_SYSSTATVFS HAS_FSTATVFS
3818 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3819 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3820 * here so that metaconfig picks them up. */
3823 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3824 /* Don't even need this function. */
3827 S_validate_suid(pTHX_ PerlIO *rsfp)
3829 const Uid_t my_uid = PerlProc_getuid();
3830 const Uid_t my_euid = PerlProc_geteuid();
3831 const Gid_t my_gid = PerlProc_getgid();
3832 const Gid_t my_egid = PerlProc_getegid();
3834 PERL_ARGS_ASSERT_VALIDATE_SUID;
3836 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3838 int fd = PerlIO_fileno(rsfp);
3840 Perl_croak(aTHX_ "Illegal suidscript");
3842 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3843 Perl_croak(aTHX_ "Illegal suidscript");
3846 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3848 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3851 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3852 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3853 /* not set-id, must be wrapped */
3856 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3859 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3865 PERL_ARGS_ASSERT_FIND_BEGINNING;
3867 /* skip forward in input to the real script? */
3870 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3871 Perl_croak(aTHX_ "No Perl script found in input\n");
3873 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3874 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3875 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3877 while (*s == ' ' || *s == '\t') s++;
3879 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3880 || s2[-1] == '_') s2--;
3881 if (strnEQ(s2-4,"perl",4))
3882 while ((s = moreswitches(s)))
3891 /* no need to do anything here any more if we don't
3893 #ifndef NO_TAINT_SUPPORT
3895 const Uid_t my_uid = PerlProc_getuid();
3896 const Uid_t my_euid = PerlProc_geteuid();
3897 const Gid_t my_gid = PerlProc_getgid();
3898 const Gid_t my_egid = PerlProc_getegid();
3900 /* Should not happen: */
3901 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3902 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3906 * Should go by suidscript, not uid!=euid: why disallow
3907 * system("ls") in scripts run from setuid things?
3908 * Or, is this run before we check arguments and set suidscript?
3909 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3910 * (We never have suidscript, can we be sure to have fdscript?)
3911 * Or must then go by UID checks? See comments in forbid_setid also.
3915 /* This is used very early in the lifetime of the program,
3916 * before even the options are parsed, so PL_tainting has
3917 * not been initialized properly. */
3919 Perl_doing_taint(int argc, char *argv[], char *envp[])
3921 #ifndef PERL_IMPLICIT_SYS
3922 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3923 * before we have an interpreter-- and the whole point of this
3924 * function is to be called at such an early stage. If you are on
3925 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3926 * "tainted because running with altered effective ids', you'll
3927 * have to add your own checks somewhere in here. The two most
3928 * known samples of 'implicitness' are Win32 and NetWare, neither
3929 * of which has much of concept of 'uids'. */
3930 Uid_t uid = PerlProc_getuid();
3931 Uid_t euid = PerlProc_geteuid();
3932 Gid_t gid = PerlProc_getgid();
3933 Gid_t egid = PerlProc_getegid();
3940 if (uid && (euid != uid || egid != gid))
3942 #endif /* !PERL_IMPLICIT_SYS */
3943 /* This is a really primitive check; environment gets ignored only
3944 * if -T are the first chars together; otherwise one gets
3945 * "Too late" message. */
3946 if ( argc > 1 && argv[1][0] == '-'
3947 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3952 /* Passing the flag as a single char rather than a string is a slight space
3953 optimisation. The only message that isn't /^-.$/ is
3954 "program input from stdin", which is substituted in place of '\0', which
3955 could never be a command line flag. */
3957 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3960 char string[3] = "-x";
3961 const char *message = "program input from stdin";
3968 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3969 if (PerlProc_getuid() != PerlProc_geteuid())
3970 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3971 if (PerlProc_getgid() != PerlProc_getegid())
3972 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3973 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3975 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3979 Perl_init_dbargs(pTHX)
3981 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3986 /* Someone has already created it.
3987 It might have entries, and if we just turn off AvREAL(), they will
3988 "leak" until global destruction. */
3990 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3991 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3993 AvREIFY_only(PL_dbargs);
3997 Perl_init_debugger(pTHX)
4000 HV * const ostash = PL_curstash;
4002 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4004 Perl_init_dbargs(aTHX);
4005 PL_DBgv = MUTABLE_GV(
4006 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4008 PL_DBline = MUTABLE_GV(
4009 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4011 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4012 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4014 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4015 if (!SvIOK(PL_DBsingle))
4016 sv_setiv(PL_DBsingle, 0);
4017 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4018 if (!SvIOK(PL_DBtrace))
4019 sv_setiv(PL_DBtrace, 0);
4020 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4021 if (!SvIOK(PL_DBsignal))
4022 sv_setiv(PL_DBsignal, 0);
4023 SvREFCNT_dec(PL_curstash);
4024 PL_curstash = ostash;
4027 #ifndef STRESS_REALLOC
4028 #define REASONABLE(size) (size)
4029 #define REASONABLE_but_at_least(size,min) (size)
4031 #define REASONABLE(size) (1) /* unreasonable */
4032 #define REASONABLE_but_at_least(size,min) (min)
4036 Perl_init_stacks(pTHX)
4039 /* start with 128-item stack and 8K cxstack */
4040 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4041 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4042 PL_curstackinfo->si_type = PERLSI_MAIN;
4043 PL_curstack = PL_curstackinfo->si_stack;
4044 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4046 PL_stack_base = AvARRAY(PL_curstack);
4047 PL_stack_sp = PL_stack_base;
4048 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4050 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4053 PL_tmps_max = REASONABLE(128);
4055 Newx(PL_markstack,REASONABLE(32),I32);
4056 PL_markstack_ptr = PL_markstack;
4057 PL_markstack_max = PL_markstack + REASONABLE(32);
4061 Newx(PL_scopestack,REASONABLE(32),I32);
4063 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4065 PL_scopestack_ix = 0;
4066 PL_scopestack_max = REASONABLE(32);
4068 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4069 PL_savestack_ix = 0;
4070 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4079 while (PL_curstackinfo->si_next)
4080 PL_curstackinfo = PL_curstackinfo->si_next;
4081 while (PL_curstackinfo) {
4082 PERL_SI *p = PL_curstackinfo->si_prev;
4083 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4084 Safefree(PL_curstackinfo->si_cxstack);
4085 Safefree(PL_curstackinfo);
4086 PL_curstackinfo = p;
4088 Safefree(PL_tmps_stack);
4089 Safefree(PL_markstack);
4090 Safefree(PL_scopestack);
4092 Safefree(PL_scopestack_name);
4094 Safefree(PL_savestack);
4098 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4100 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4101 AV *const isa = GvAVn(gv);
4104 PERL_ARGS_ASSERT_POPULATE_ISA;
4106 if(AvFILLp(isa) != -1)
4109 /* NOTE: No support for tied ISA */
4111 va_start(args, len);
4113 const char *const parent = va_arg(args, const char*);
4118 parent_len = va_arg(args, size_t);
4120 /* Arguments are supplied with a trailing :: */
4121 assert(parent_len > 2);
4122 assert(parent[parent_len - 1] == ':');
4123 assert(parent[parent_len - 2] == ':');
4124 av_push(isa, newSVpvn(parent, parent_len - 2));
4125 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4132 S_init_predump_symbols(pTHX)
4138 sv_setpvs(get_sv("\"", GV_ADD), " ");
4139 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4142 /* Historically, PVIOs were blessed into IO::Handle, unless
4143 FileHandle was loaded, in which case they were blessed into
4144 that. Action at a distance.
4145 However, if we simply bless into IO::Handle, we break code
4146 that assumes that PVIOs will have (among others) a seek
4147 method. IO::File inherits from IO::Handle and IO::Seekable,
4148 and provides the needed methods. But if we simply bless into
4149 it, then we break code that assumed that by loading
4150 IO::Handle, *it* would work.
4151 So a compromise is to set up the correct @IO::File::ISA,
4152 so that code that does C<use IO::Handle>; will still work.
4155 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4156 STR_WITH_LEN("IO::Handle::"),
4157 STR_WITH_LEN("IO::Seekable::"),
4158 STR_WITH_LEN("Exporter::"),
4161 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4162 GvMULTI_on(PL_stdingv);
4163 io = GvIOp(PL_stdingv);
4164 IoTYPE(io) = IoTYPE_RDONLY;
4165 IoIFP(io) = PerlIO_stdin();
4166 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4168 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4170 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4173 IoTYPE(io) = IoTYPE_WRONLY;
4174 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4176 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4178 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4180 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4181 GvMULTI_on(PL_stderrgv);
4182 io = GvIOp(PL_stderrgv);
4183 IoTYPE(io) = IoTYPE_WRONLY;
4184 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4185 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4187 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4189 PL_statname = newSVpvs(""); /* last filename we did stat on */
4193 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4197 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4199 argc--,argv++; /* skip name of script */
4200 if (PL_doswitches) {
4201 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4205 if (argv[0][1] == '-' && !argv[0][2]) {
4209 if ((s = strchr(argv[0], '='))) {
4210 const char *const start_name = argv[0] + 1;
4211 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4212 TRUE, SVt_PV)), s + 1);
4215 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4218 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4219 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4220 GvMULTI_on(PL_argvgv);
4221 av_clear(GvAVn(PL_argvgv));
4222 for (; argc > 0; argc--,argv++) {
4223 SV * const sv = newSVpv(argv[0],0);
4224 av_push(GvAV(PL_argvgv),sv);
4225 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4226 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4229 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4230 (void)sv_utf8_decode(sv);
4234 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4235 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4236 "-i used with no filenames on the command line, "
4237 "reading from STDIN");
4241 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4246 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4248 PL_toptarget = newSV_type(SVt_PVIV);
4249 sv_setpvs(PL_toptarget, "");
4250 PL_bodytarget = newSV_type(SVt_PVIV);
4251 sv_setpvs(PL_bodytarget, "");
4252 PL_formtarget = PL_bodytarget;
4256 init_argv_symbols(argc,argv);
4258 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4259 sv_setpv(GvSV(tmpgv),PL_origfilename);
4261 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4263 bool env_is_not_environ;
4264 SvREFCNT_inc_simple_void_NN(PL_envgv);
4265 GvMULTI_on(PL_envgv);
4266 hv = GvHVn(PL_envgv);
4267 hv_magic(hv, NULL, PERL_MAGIC_env);
4269 #ifdef USE_ENVIRON_ARRAY
4270 /* Note that if the supplied env parameter is actually a copy
4271 of the global environ then it may now point to free'd memory
4272 if the environment has been modified since. To avoid this
4273 problem we treat env==NULL as meaning 'use the default'
4277 env_is_not_environ = env != environ;
4278 if (env_is_not_environ
4279 # ifdef USE_ITHREADS
4280 && PL_curinterp == aTHX
4289 for (; *env; env++) {
4292 if (!(s = strchr(old_var,'=')) || s == old_var)
4295 #if defined(MSDOS) && !defined(DJGPP)
4297 (void)strupr(old_var);
4300 sv = newSVpv(s+1, 0);
4301 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4302 if (env_is_not_environ)
4306 #endif /* USE_ENVIRON_ARRAY */
4307 #endif /* !PERL_MICRO */
4311 /* touch @F array to prevent spurious warnings 20020415 MJD */
4313 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4318 S_init_perllib(pTHX)
4322 const char *perl5lib = NULL;
4325 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4329 if (!TAINTING_get) {
4331 perl5lib = PerlEnv_getenv("PERL5LIB");
4333 * It isn't possible to delete an environment variable with
4334 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4335 * case we treat PERL5LIB as undefined if it has a zero-length value.
4337 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4338 if (perl5lib && *perl5lib != '\0')
4342 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4344 s = PerlEnv_getenv("PERLLIB");
4346 incpush_use_sep(s, 0, 0);
4349 /* Treat PERL5?LIB as a possible search list logical name -- the
4350 * "natural" VMS idiom for a Unix path string. We allow each
4351 * element to be a set of |-separated directories for compatibility.
4355 if (my_trnlnm("PERL5LIB",buf,0))
4357 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4358 } while (my_trnlnm("PERL5LIB",buf,++idx));
4360 while (my_trnlnm("PERLLIB",buf,idx++))
4361 incpush_use_sep(buf, 0, 0);
4366 #ifndef PERL_IS_MINIPERL
4367 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4368 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4370 /* Use the ~-expanded versions of APPLLIB (undocumented),
4371 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4374 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4375 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4379 /* sitearch is always relative to sitelib on Windows for
4380 * DLL-based path intuition to work correctly */
4381 # if !defined(WIN32)
4382 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4383 INCPUSH_CAN_RELOCATE);
4389 /* this picks up sitearch as well */
4390 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4392 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4394 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4398 #ifdef PERL_VENDORARCH_EXP
4399 /* vendorarch is always relative to vendorlib on Windows for
4400 * DLL-based path intuition to work correctly */
4401 # if !defined(WIN32)
4402 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4403 INCPUSH_CAN_RELOCATE);
4407 #ifdef PERL_VENDORLIB_EXP
4409 /* this picks up vendorarch as well */
4410 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4412 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4414 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4415 INCPUSH_CAN_RELOCATE);
4420 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4424 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4428 s = win32_get_privlib(PERL_FS_VERSION, &len);
4430 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4433 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4435 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4439 #ifdef PERL_OTHERLIBDIRS
4440 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4441 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4442 |INCPUSH_CAN_RELOCATE);
4445 if (!TAINTING_get) {
4448 * It isn't possible to delete an environment variable with
4449 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4450 * case we treat PERL5LIB as undefined if it has a zero-length value.
4452 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4453 if (perl5lib && *perl5lib != '\0')
4457 incpush_use_sep(perl5lib, 0,
4458 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4460 /* Treat PERL5?LIB as a possible search list logical name -- the
4461 * "natural" VMS idiom for a Unix path string. We allow each
4462 * element to be a set of |-separated directories for compatibility.
4466 if (my_trnlnm("PERL5LIB",buf,0))
4468 incpush_use_sep(buf, 0,
4469 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4470 } while (my_trnlnm("PERL5LIB",buf,++idx));
4474 /* Use the ~-expanded versions of APPLLIB (undocumented),
4475 SITELIB and VENDORLIB for older versions
4478 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4479 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4482 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4483 /* Search for version-specific dirs below here */
4484 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4485 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4489 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4490 /* Search for version-specific dirs below here */
4491 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4492 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4495 #ifdef PERL_OTHERLIBDIRS
4496 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4497 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4498 |INCPUSH_CAN_RELOCATE);
4500 #endif /* !PERL_IS_MINIPERL */
4503 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4506 #if defined(DOSISH) || defined(__SYMBIAN32__)
4507 # define PERLLIB_SEP ';'
4510 # define PERLLIB_SEP '|'
4512 # define PERLLIB_SEP ':'
4515 #ifndef PERLLIB_MANGLE
4516 # define PERLLIB_MANGLE(s,n) (s)
4519 #ifndef PERL_IS_MINIPERL
4520 /* Push a directory onto @INC if it exists.
4521 Generate a new SV if we do this, to save needing to copy the SV we push
4524 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4529 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4531 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4532 S_ISDIR(tmpstatbuf.st_mode)) {
4534 dir = newSVsv(stem);
4536 /* Truncate dir back to stem. */
4537 SvCUR_set(dir, SvCUR(stem));
4544 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4546 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4549 PERL_ARGS_ASSERT_MAYBERELOCATE;
4552 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4553 defined to so something (in os2/os2.c), but the code has been
4554 this way, ignoring any possible changed of length, since
4555 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4557 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4563 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4565 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4566 sv_usepvn(libdir,unix,len);
4569 PerlIO_printf(Perl_error_log,
4570 "Failed to unixify @INC element \"%s\"\n",
4571 SvPV_nolen_const(libdir));
4575 /* Do the if() outside the #ifdef to avoid warnings about an unused
4578 #ifdef PERL_RELOCATABLE_INC
4580 * Relocatable include entries are marked with a leading .../
4583 * 0: Remove that leading ".../"
4584 * 1: Remove trailing executable name (anything after the last '/')
4585 * from the perl path to give a perl prefix
4587 * While the @INC element starts "../" and the prefix ends with a real
4588 * directory (ie not . or ..) chop that real directory off the prefix
4589 * and the leading "../" from the @INC element. ie a logical "../"
4591 * Finally concatenate the prefix and the remainder of the @INC element
4592 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4593 * generates /usr/local/lib/perl5
4595 const char *libpath = SvPVX(libdir);
4596 STRLEN libpath_len = SvCUR(libdir);
4597 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4599 SV * const caret_X = get_sv("\030", 0);
4600 /* Going to use the SV just as a scratch buffer holding a C
4606 /* $^X is *the* source of taint if tainting is on, hence
4607 SvPOK() won't be true. */
4609 assert(SvPOKp(caret_X));
4610 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4612 /* Firstly take off the leading .../
4613 If all else fail we'll do the paths relative to the current
4615 sv_chop(libdir, libpath + 4);
4616 /* Don't use SvPV as we're intentionally bypassing taining,
4617 mortal copies that the mg_get of tainting creates, and
4618 corruption that seems to come via the save stack.
4619 I guess that the save stack isn't correctly set up yet. */
4620 libpath = SvPVX(libdir);
4621 libpath_len = SvCUR(libdir);
4623 /* This would work more efficiently with memrchr, but as it's
4624 only a GNU extension we'd need to probe for it and
4625 implement our own. Not hard, but maybe not worth it? */
4627 prefix = SvPVX(prefix_sv);
4628 lastslash = strrchr(prefix, '/');
4630 /* First time in with the *lastslash = '\0' we just wipe off
4631 the trailing /perl from (say) /usr/foo/bin/perl
4635 while ((*lastslash = '\0'), /* Do that, come what may. */
4636 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4637 && (lastslash = strrchr(prefix, '/')))) {
4638 if (lastslash[1] == '\0'
4639 || (lastslash[1] == '.'
4640 && (lastslash[2] == '/' /* ends "/." */
4641 || (lastslash[2] == '/'
4642 && lastslash[3] == '/' /* or "/.." */
4644 /* Prefix ends "/" or "/." or "/..", any of which
4645 are fishy, so don't do any more logical cleanup.
4649 /* Remove leading "../" from path */
4652 /* Next iteration round the loop removes the last
4653 directory name from prefix by writing a '\0' in
4654 the while clause. */
4656 /* prefix has been terminated with a '\0' to the correct
4657 length. libpath points somewhere into the libdir SV.
4658 We need to join the 2 with '/' and drop the result into
4660 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4661 SvREFCNT_dec(libdir);
4662 /* And this is the new libdir. */
4665 (PerlProc_getuid() != PerlProc_geteuid() ||
4666 PerlProc_getgid() != PerlProc_getegid())) {
4667 /* Need to taint relocated paths if running set ID */
4668 SvTAINTED_on(libdir);
4671 SvREFCNT_dec(prefix_sv);
4679 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4682 #ifndef PERL_IS_MINIPERL
4683 const U8 using_sub_dirs
4684 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4685 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4686 const U8 add_versioned_sub_dirs
4687 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4688 const U8 add_archonly_sub_dirs
4689 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4690 #ifdef PERL_INC_VERSION_LIST
4691 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4694 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4695 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4696 AV *const inc = GvAVn(PL_incgv);
4698 PERL_ARGS_ASSERT_INCPUSH;
4701 /* Could remove this vestigial extra block, if we don't mind a lot of
4702 re-indenting diff noise. */
4704 SV *const libdir = mayberelocate(dir, len, flags);
4705 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4706 arranged to unshift #! line -I onto the front of @INC. However,
4707 -I can add version and architecture specific libraries, and they
4708 need to go first. The old code assumed that it was always
4709 pushing. Hence to make it work, need to push the architecture
4710 (etc) libraries onto a temporary array, then "unshift" that onto
4711 the front of @INC. */
4712 #ifndef PERL_IS_MINIPERL
4713 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4716 * BEFORE pushing libdir onto @INC we may first push version- and
4717 * archname-specific sub-directories.
4719 if (using_sub_dirs) {
4720 SV *subdir = newSVsv(libdir);
4721 #ifdef PERL_INC_VERSION_LIST
4722 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4723 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4724 const char * const *incver;
4727 if (add_versioned_sub_dirs) {
4728 /* .../version/archname if -d .../version/archname */
4729 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4730 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4732 /* .../version if -d .../version */
4733 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4734 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4737 #ifdef PERL_INC_VERSION_LIST
4739 for (incver = incverlist; *incver; incver++) {
4740 /* .../xxx if -d .../xxx */
4741 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4742 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4747 if (add_archonly_sub_dirs) {
4748 /* .../archname if -d .../archname */
4749 sv_catpvs(subdir, "/" ARCHNAME);
4750 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4754 assert (SvREFCNT(subdir) == 1);
4755 SvREFCNT_dec(subdir);
4757 #endif /* !PERL_IS_MINIPERL */
4758 /* finally add this lib directory at the end of @INC */
4760 #ifdef PERL_IS_MINIPERL
4761 const Size_t extra = 0;
4763 Size_t extra = av_tindex(av) + 1;
4765 av_unshift(inc, extra + push_basedir);
4767 av_store(inc, extra, libdir);
4768 #ifndef PERL_IS_MINIPERL
4770 /* av owns a reference, av_store() expects to be donated a
4771 reference, and av expects to be sane when it's cleared.
4772 If I wanted to be naughty and wrong, I could peek inside the
4773 implementation of av_clear(), realise that it uses
4774 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4775 and so directly steal from it (with a memcpy() to inc, and
4776 then memset() to NULL them out. But people copy code from the
4777 core expecting it to be best practise, so let's use the API.
4778 Although studious readers will note that I'm not checking any
4780 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4785 else if (push_basedir) {
4786 av_push(inc, libdir);
4789 if (!push_basedir) {
4790 assert (SvREFCNT(libdir) == 1);
4791 SvREFCNT_dec(libdir);
4797 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4801 /* This logic has been broken out from S_incpush(). It may be possible to
4804 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4806 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4807 * argument to incpush_use_sep. This allows creation of relocatable
4808 * Perl distributions that patch the binary at install time. Those
4809 * distributions will have to provide their own relocation tools; this
4810 * is not a feature otherwise supported by core Perl.
4812 #ifndef PERL_RELOCATABLE_INCPUSH
4819 /* Break at all separators */
4820 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4822 /* skip any consecutive separators */
4824 /* Uncomment the next line for PATH semantics */
4825 /* But you'll need to write tests */
4826 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4828 incpush(p, (STRLEN)(s - p), flags);
4833 incpush(p, (STRLEN)(end - p), flags);
4838 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4842 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4848 PERL_ARGS_ASSERT_CALL_LIST;
4850 while (av_tindex(paramList) >= 0) {
4851 cv = MUTABLE_CV(av_shift(paramList));
4853 if (paramList == PL_beginav) {
4854 /* save PL_beginav for compiler */
4855 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4857 else if (paramList == PL_checkav) {
4858 /* save PL_checkav for compiler */
4859 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4861 else if (paramList == PL_unitcheckav) {
4862 /* save PL_unitcheckav for compiler */
4863 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4874 PL_madskills |= 16384;
4879 PL_madskills &= ~16384;
4882 (void)SvPV_const(atsv, len);
4884 PL_curcop = &PL_compiling;
4885 CopLINE_set(PL_curcop, oldline);
4886 if (paramList == PL_beginav)
4887 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4889 Perl_sv_catpvf(aTHX_ atsv,
4890 "%s failed--call queue aborted",
4891 paramList == PL_checkav ? "CHECK"
4892 : paramList == PL_initav ? "INIT"
4893 : paramList == PL_unitcheckav ? "UNITCHECK"
4895 while (PL_scopestack_ix > oldscope)
4898 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4905 /* my_exit() was called */
4906 while (PL_scopestack_ix > oldscope)
4909 SET_CURSTASH(PL_defstash);
4910 PL_curcop = &PL_compiling;
4911 CopLINE_set(PL_curcop, oldline);
4914 assert(0); /* NOTREACHED */
4917 PL_curcop = &PL_compiling;
4918 CopLINE_set(PL_curcop, oldline);
4921 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4930 Perl_my_exit(pTHX_ U32 status)
4933 if (PL_exit_flags & PERL_EXIT_ABORT) {
4936 if (PL_exit_flags & PERL_EXIT_WARN) {
4937 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4938 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4939 PL_exit_flags &= ~PERL_EXIT_ABORT;
4949 STATUS_EXIT_SET(status);
4956 Perl_my_failure_exit(pTHX)
4960 /* We have been called to fall on our sword. The desired exit code
4961 * should be already set in STATUS_UNIX, but could be shifted over
4962 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4965 * If an error code has not been set, then force the issue.
4967 if (MY_POSIX_EXIT) {
4969 /* According to the die_exit.t tests, if errno is non-zero */
4970 /* It should be used for the error status. */
4972 if (errno == EVMSERR) {
4973 STATUS_NATIVE = vaxc$errno;
4976 /* According to die_exit.t tests, if the child_exit code is */
4977 /* also zero, then we need to exit with a code of 255 */
4978 if ((errno != 0) && (errno < 256))
4979 STATUS_UNIX_EXIT_SET(errno);
4980 else if (STATUS_UNIX < 255) {
4981 STATUS_UNIX_EXIT_SET(255);
4986 /* The exit code could have been set by $? or vmsish which
4987 * means that it may not have fatal set. So convert
4988 * success/warning codes to fatal with out changing
4989 * the POSIX status code. The severity makes VMS native
4990 * status handling work, while UNIX mode programs use the
4991 * the POSIX exit codes.
4993 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4994 STATUS_NATIVE &= STS$M_COND_ID;
4995 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4999 /* Traditionally Perl on VMS always expects a Fatal Error. */
5000 if (vaxc$errno & 1) {
5002 /* So force success status to failure */
5003 if (STATUS_NATIVE & 1)
5008 STATUS_UNIX = EINTR; /* In case something cares */
5013 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5015 /* Encode the severity code */
5016 severity = STATUS_NATIVE & STS$M_SEVERITY;
5017 STATUS_UNIX = (severity ? severity : 1) << 8;
5019 /* Perl expects this to be a fatal error */
5020 if (severity != STS$K_SEVERE)
5029 STATUS_UNIX_SET(errno);
5031 exitstatus = STATUS_UNIX >> 8;
5032 if (exitstatus & 255)
5033 STATUS_UNIX_SET(exitstatus);
5035 STATUS_UNIX_SET(255);
5038 if (PL_exit_flags & PERL_EXIT_ABORT) {
5041 if (PL_exit_flags & PERL_EXIT_WARN) {
5042 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5043 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5044 PL_exit_flags &= ~PERL_EXIT_ABORT;
5050 S_my_exit_jump(pTHX)
5055 SvREFCNT_dec(PL_e_script);
5059 POPSTACK_TO(PL_mainstack);
5067 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5070 const char * const p = SvPVX_const(PL_e_script);
5071 const char *nl = strchr(p, '\n');
5073 PERL_UNUSED_ARG(idx);
5074 PERL_UNUSED_ARG(maxlen);
5076 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5078 filter_del(read_e_script);
5081 sv_catpvn(buf_sv, p, nl-p);
5082 sv_chop(PL_e_script, nl);
5088 * c-indentation-style: bsd
5090 * indent-tabs-mode: nil
5093 * ex: set ts=8 sts=4 sw=4 et: