4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
36 #include "charclass_invlists.h"
42 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
49 char control[CMSG_SPACE(sizeof(int))];
62 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
63 char *getenv (char *); /* Usually in <stdlib.h> */
66 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
68 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
69 # define validate_suid(rsfp) NOOP
71 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
74 #define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
80 #define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
85 S_init_tls_and_interp(PerlInterpreter *my_perl)
89 PERL_SET_INTERP(my_perl);
90 #if defined(USE_ITHREADS)
93 PERL_SET_THX(my_perl);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
226 PL_perl_destruct_level = 1;
228 PERL_UNUSED_ARG(my_perl);
229 if (PL_perl_destruct_level > 0)
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
234 #ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
240 SvREADONLY_on(&PL_sv_placeholder);
241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
244 #ifdef PERL_USES_PL_PIDSTATUS
245 PL_pidstatus = newHV();
248 PL_rs = newSVpvs("\n");
259 #if defined(LOCAL_PATCH_COUNT)
260 PL_localpatches = local_patches; /* For possible -v */
263 #ifdef HAVE_INTERP_INTERN
267 PerlIO_init(aTHX); /* Hook to IO system */
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
271 PL_errors = newSVpvs("");
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
279 PL_regex_pad = AvARRAY(PL_regex_padav);
280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
282 #ifdef USE_REENTRANT_API
283 Perl_reentrant_init(aTHX);
285 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
297 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
310 # ifdef USE_ENVIRON_ARRAY
311 PL_origenviron = environ;
315 /* Use sysconf(_SC_CLK_TCK) if available, if not
316 * available or if the sysconf() fails, use the HZ.
317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
319 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
325 PL_stashcache = newHV();
327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
330 if (!PL_mmap_page_size) {
331 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 SETERRNO(0, SS_NORMAL);
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339 if ((long) PL_mmap_page_size < 0) {
341 SV * const error = ERRSV;
342 SvUPGRADE(error, SVt_PV);
343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
350 # ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
353 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
362 #endif /* HAS_MMAP */
364 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373 PL_registered_mros = newHV();
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
377 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
378 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
379 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
380 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
381 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
382 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
383 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
384 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
385 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
386 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
387 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
388 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
389 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
390 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
391 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
392 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
393 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
399 =for apidoc nothreadhook
401 Stub that provides thread hook for perl_destruct when there are
408 Perl_nothreadhook(pTHX)
414 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416 Perl_dump_sv_child(pTHX_ SV *sv)
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
421 union control_un control;
424 struct cmsghdr *cmptr;
426 unsigned char buffer[256];
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430 if(sock == -1 || debug_fd == -1)
433 PerlIO_flush(Perl_debug_log);
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
439 be open, the wait would be forever.) */
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
460 perror("Debug leaking scalars parent sendmsg failed");
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
468 /* Return protocol is
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
478 got = readv(sock, vec, 2);
481 perror("Debug leaking scalars parent read failed");
482 PerlIO_flush(PerlIO_stderr());
485 if(got < sizeof(returned_errno) + 1) {
486 perror("Debug leaking scalars parent short read");
487 PerlIO_flush(PerlIO_stderr());
492 got = read(sock, buffer + 1, *buffer);
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
509 returned_errno, Strerror(returned_errno));
515 =for apidoc perl_destruct
517 Shuts down a Perl interpreter. See L<perlembed>.
526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
528 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
533 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535 PERL_UNUSED_ARG(my_perl);
538 assert(PL_scopestack_ix == 1);
540 /* wait for all pseudo-forked children to finish */
541 PERL_WAIT_FOR_CHILDREN;
543 destruct_level = PL_perl_destruct_level;
544 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
546 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
552 i = grok_atou(s, NULL);
555 if (destruct_level < i) destruct_level = i;
557 #ifdef PERL_TRACK_MEMPOOL
558 /* RT #114496, for perl_free */
559 PL_perl_destruct_level = i;
565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
571 if (PL_endav && !PL_minus_c) {
572 PERL_SET_PHASE(PERL_PHASE_END);
573 call_list(PL_scopestack_ix, PL_endav);
579 assert(PL_scopestack_ix == 0);
581 /* Need to flush since END blocks can produce output */
584 #ifdef PERL_TRACE_OPS
585 /* If we traced all Perl OP usage, report and clean up */
586 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
587 for (i = 0; i <= OP_max; ++i) {
588 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
589 PL_op_exec_cnt[i] = 0;
591 /* Utility slot for easily doing little tracing experiments in the runloop: */
592 if (PL_op_exec_cnt[OP_max+1] != 0)
593 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
594 PerlIO_printf(Perl_debug_log, "\n");
598 if (PL_threadhook(aTHX)) {
599 /* Threads hook has vetoed further cleanup */
600 PL_veto_cleanup = TRUE;
604 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
605 if (destruct_level != 0) {
606 /* Fork here to create a child. Our child's job is to preserve the
607 state of scalars prior to destruction, so that we can instruct it
608 to dump any scalars that we later find have leaked.
609 There's no subtlety in this code - it assumes POSIX, and it doesn't
613 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
614 perror("Debug leaking scalars socketpair failed");
620 perror("Debug leaking scalars fork failed");
624 /* We are the child */
625 const int sock = fd[1];
626 const int debug_fd = PerlIO_fileno(Perl_debug_log);
629 /* Our success message is an integer 0, and a char 0 */
630 static const char success[sizeof(int) + 1] = {0};
634 /* We need to close all other file descriptors otherwise we end up
635 with interesting hangs, where the parent closes its end of a
636 pipe, and sits waiting for (another) child to terminate. Only
637 that child never terminates, because it never gets EOF, because
638 we also have the far end of the pipe open. We even need to
639 close the debugging fd, because sometimes it happens to be one
640 end of a pipe, and a process is waiting on the other end for
641 EOF. Normally it would be closed at some point earlier in
642 destruction, but if we happen to cause the pipe to remain open,
643 EOF never occurs, and we get an infinite hang. Hence all the
644 games to pass in a file descriptor if it's actually needed. */
646 f = sysconf(_SC_OPEN_MAX);
648 where = "sysconf failed";
659 union control_un control;
662 struct cmsghdr *cmptr;
666 msg.msg_control = control.control;
667 msg.msg_controllen = sizeof(control.control);
668 /* We're a connected socket so we don't need a source */
672 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
674 vec[0].iov_base = (void*)⌖
675 vec[0].iov_len = sizeof(target);
677 got = recvmsg(sock, &msg, 0);
682 where = "recv failed";
685 if(got < sizeof(target)) {
686 where = "short recv";
690 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
694 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
695 where = "wrong cmsg_len";
698 if(cmptr->cmsg_level != SOL_SOCKET) {
699 where = "wrong cmsg_level";
702 if(cmptr->cmsg_type != SCM_RIGHTS) {
703 where = "wrong cmsg_type";
707 got_fd = *(int*)CMSG_DATA(cmptr);
708 /* For our last little bit of trickery, put the file descriptor
709 back into Perl_debug_log, as if we never actually closed it
711 if(got_fd != debug_fd) {
712 if (dup2(got_fd, debug_fd) == -1) {
719 PerlIO_flush(Perl_debug_log);
721 got = write(sock, &success, sizeof(success));
724 where = "write failed";
727 if(got < sizeof(success)) {
728 where = "short write";
735 int send_errno = errno;
736 unsigned char length = (unsigned char) strlen(where);
737 struct iovec failure[3] = {
738 {(void*)&send_errno, sizeof(send_errno)},
740 {(void*)where, length}
742 int got = writev(sock, failure, 3);
743 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
744 in the parent if we try to read from the socketpair after the
745 child has exited, even if there was data to read.
746 So sleep a bit to give the parent a fighting chance of
749 _exit((got == -1) ? errno : 0);
753 PL_dumper_fd = fd[0];
758 /* We must account for everything. */
760 /* Destroy the main CV and syntax tree */
761 /* Set PL_curcop now, because destroying ops can cause new SVs
762 to be generated in Perl_pad_swipe, and when running with
763 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
764 op from which the filename structure member is copied. */
765 PL_curcop = &PL_compiling;
767 /* ensure comppad/curpad to refer to main's pad */
768 if (CvPADLIST(PL_main_cv)) {
769 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
770 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
772 op_free(PL_main_root);
775 PL_main_start = NULL;
776 /* note that PL_main_cv isn't usually actually freed at this point,
777 * due to the CvOUTSIDE refs from subs compiled within it. It will
778 * get freed once all the subs are freed in sv_clean_all(), for
779 * destruct_level > 0 */
780 SvREFCNT_dec(PL_main_cv);
782 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
784 /* Tell PerlIO we are about to tear things apart in case
785 we have layers which are using resources that should
789 PerlIO_destruct(aTHX);
792 * Try to destruct global references. We do this first so that the
793 * destructors and destructees still exist. Some sv's might remain.
794 * Non-referenced objects are on their own.
798 /* unhook hooks which will soon be, or use, destroyed data */
799 SvREFCNT_dec(PL_warnhook);
801 SvREFCNT_dec(PL_diehook);
804 /* call exit list functions */
805 while (PL_exitlistlen-- > 0)
806 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
808 Safefree(PL_exitlist);
813 SvREFCNT_dec(PL_registered_mros);
815 /* jettison our possibly duplicated environment */
816 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
817 * so we certainly shouldn't free it here
820 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
821 if (environ != PL_origenviron && !PL_use_safe_putenv
823 /* only main thread can free environ[0] contents */
824 && PL_curinterp == aTHX
830 for (i = 0; environ[i]; i++)
831 safesysfree(environ[i]);
833 /* Must use safesysfree() when working with environ. */
834 safesysfree(environ);
836 environ = PL_origenviron;
839 #endif /* !PERL_MICRO */
841 if (destruct_level == 0) {
843 DEBUG_P(debprofdump());
845 #if defined(PERLIO_LAYERS)
846 /* No more IO - including error messages ! */
847 PerlIO_cleanup(aTHX);
850 CopFILE_free(&PL_compiling);
852 /* The exit() function will do everything that needs doing. */
856 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
859 /* the syntax tree is shared between clones
860 * so op_free(PL_main_root) only ReREFCNT_dec's
861 * REGEXPs in the parent interpreter
862 * we need to manually ReREFCNT_dec for the clones
865 I32 i = AvFILLp(PL_regex_padav);
866 SV **ary = AvARRAY(PL_regex_padav);
869 SvREFCNT_dec(ary[i]);
870 ary[i] = &PL_sv_undef;
876 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
877 PL_stashcache = NULL;
879 /* loosen bonds of global variables */
881 /* XXX can PL_parser still be non-null here? */
882 if(PL_parser && PL_parser->rsfp) {
883 (void)PerlIO_close(PL_parser->rsfp);
884 PL_parser->rsfp = NULL;
888 Safefree(PL_splitstr);
898 PL_doswitches = FALSE;
899 PL_dowarn = G_WARN_OFF;
900 #ifdef PERL_SAWAMPERSAND
901 PL_sawampersand = 0; /* must save all match strings */
905 Safefree(PL_inplace);
907 SvREFCNT_dec(PL_patchlevel);
910 SvREFCNT_dec(PL_e_script);
916 /* magical thingies */
918 SvREFCNT_dec(PL_ofsgv); /* *, */
921 SvREFCNT_dec(PL_ors_sv); /* $\ */
924 SvREFCNT_dec(PL_rs); /* $/ */
927 Safefree(PL_osname); /* $^O */
930 SvREFCNT_dec(PL_statname);
934 /* defgv, aka *_ should be taken care of elsewhere */
937 Safefree(PL_efloatbuf);
941 /* startup and shutdown function lists */
942 SvREFCNT_dec(PL_beginav);
943 SvREFCNT_dec(PL_beginav_save);
944 SvREFCNT_dec(PL_endav);
945 SvREFCNT_dec(PL_checkav);
946 SvREFCNT_dec(PL_checkav_save);
947 SvREFCNT_dec(PL_unitcheckav);
948 SvREFCNT_dec(PL_unitcheckav_save);
949 SvREFCNT_dec(PL_initav);
951 PL_beginav_save = NULL;
954 PL_checkav_save = NULL;
955 PL_unitcheckav = NULL;
956 PL_unitcheckav_save = NULL;
959 /* shortcuts just get cleared */
965 PL_last_in_gv = NULL;
976 SvREFCNT_dec(PL_envgv);
977 SvREFCNT_dec(PL_incgv);
978 SvREFCNT_dec(PL_argvgv);
979 SvREFCNT_dec(PL_replgv);
980 SvREFCNT_dec(PL_DBgv);
981 SvREFCNT_dec(PL_DBline);
982 SvREFCNT_dec(PL_DBsub);
991 SvREFCNT_dec(PL_argvout_stack);
992 PL_argvout_stack = NULL;
994 SvREFCNT_dec(PL_modglobal);
996 SvREFCNT_dec(PL_preambleav);
997 PL_preambleav = NULL;
998 SvREFCNT_dec(PL_subname);
1000 #ifdef PERL_USES_PL_PIDSTATUS
1001 SvREFCNT_dec(PL_pidstatus);
1002 PL_pidstatus = NULL;
1004 SvREFCNT_dec(PL_toptarget);
1005 PL_toptarget = NULL;
1006 SvREFCNT_dec(PL_bodytarget);
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
1010 /* free locale stuff */
1011 #ifdef USE_LOCALE_COLLATE
1012 Safefree(PL_collation_name);
1013 PL_collation_name = NULL;
1016 #ifdef USE_LOCALE_NUMERIC
1017 Safefree(PL_numeric_name);
1018 PL_numeric_name = NULL;
1019 SvREFCNT_dec(PL_numeric_radix_sv);
1020 PL_numeric_radix_sv = NULL;
1023 /* clear character classes */
1024 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1025 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1026 PL_utf8_swash_ptrs[i] = NULL;
1028 SvREFCNT_dec(PL_utf8_mark);
1029 SvREFCNT_dec(PL_utf8_toupper);
1030 SvREFCNT_dec(PL_utf8_totitle);
1031 SvREFCNT_dec(PL_utf8_tolower);
1032 SvREFCNT_dec(PL_utf8_tofold);
1033 SvREFCNT_dec(PL_utf8_idstart);
1034 SvREFCNT_dec(PL_utf8_idcont);
1035 SvREFCNT_dec(PL_utf8_foldable);
1036 SvREFCNT_dec(PL_utf8_foldclosures);
1037 SvREFCNT_dec(PL_AboveLatin1);
1038 SvREFCNT_dec(PL_InBitmap);
1039 SvREFCNT_dec(PL_UpperLatin1);
1040 SvREFCNT_dec(PL_Latin1);
1041 SvREFCNT_dec(PL_NonL1NonFinalFold);
1042 SvREFCNT_dec(PL_HasMultiCharFold);
1043 PL_utf8_mark = NULL;
1044 PL_utf8_toupper = NULL;
1045 PL_utf8_totitle = NULL;
1046 PL_utf8_tolower = NULL;
1047 PL_utf8_tofold = NULL;
1048 PL_utf8_idstart = NULL;
1049 PL_utf8_idcont = NULL;
1050 PL_utf8_foldclosures = NULL;
1051 PL_AboveLatin1 = NULL;
1053 PL_HasMultiCharFold = NULL;
1055 PL_NonL1NonFinalFold = NULL;
1056 PL_UpperLatin1 = NULL;
1057 for (i = 0; i < POSIX_CC_COUNT; i++) {
1058 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1059 PL_XPosix_ptrs[i] = NULL;
1062 if (!specialWARN(PL_compiling.cop_warnings))
1063 PerlMemShared_free(PL_compiling.cop_warnings);
1064 PL_compiling.cop_warnings = NULL;
1065 cophh_free(CopHINTHASH_get(&PL_compiling));
1066 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1067 CopFILE_free(&PL_compiling);
1069 /* Prepare to destruct main symbol table. */
1072 /* break ref loop *:: <=> %:: */
1073 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1076 SvREFCNT_dec(PL_curstname);
1077 PL_curstname = NULL;
1079 /* clear queued errors */
1080 SvREFCNT_dec(PL_errors);
1083 SvREFCNT_dec(PL_isarev);
1086 if (destruct_level >= 2) {
1087 if (PL_scopestack_ix != 0)
1088 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1089 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1090 (long)PL_scopestack_ix);
1091 if (PL_savestack_ix != 0)
1092 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced saves: %ld more saves than restores\n",
1094 (long)PL_savestack_ix);
1095 if (PL_tmps_floor != -1)
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1097 (long)PL_tmps_floor + 1);
1098 if (cxstack_ix != -1)
1099 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1100 (long)cxstack_ix + 1);
1104 SvREFCNT_dec(PL_regex_padav);
1105 PL_regex_padav = NULL;
1106 PL_regex_pad = NULL;
1109 #ifdef PERL_IMPLICIT_CONTEXT
1110 /* the entries in this list are allocated via SV PVX's, so get freed
1111 * in sv_clean_all */
1112 Safefree(PL_my_cxt_list);
1115 /* Now absolutely destruct everything, somehow or other, loops or no. */
1117 /* the 2 is for PL_fdpid and PL_strtab */
1118 while (sv_clean_all() > 2)
1122 Safefree(PL_stashpad); /* must come after sv_clean_all */
1125 AvREAL_off(PL_fdpid); /* no surviving entries */
1126 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1129 #ifdef HAVE_INTERP_INTERN
1133 /* constant strings */
1134 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1135 SvREFCNT_dec(PL_sv_consts[i]);
1136 PL_sv_consts[i] = NULL;
1139 /* Destruct the global string table. */
1141 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1142 * so that sv_free() won't fail on them.
1143 * Now that the global string table is using a single hunk of memory
1144 * for both HE and HEK, we either need to explicitly unshare it the
1145 * correct way, or actually free things here.
1148 const I32 max = HvMAX(PL_strtab);
1149 HE * const * const array = HvARRAY(PL_strtab);
1150 HE *hent = array[0];
1153 if (hent && ckWARN_d(WARN_INTERNAL)) {
1154 HE * const next = HeNEXT(hent);
1155 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1156 "Unbalanced string table refcount: (%ld) for \"%s\"",
1157 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1164 hent = array[riter];
1169 HvARRAY(PL_strtab) = 0;
1170 HvTOTALKEYS(PL_strtab) = 0;
1172 SvREFCNT_dec(PL_strtab);
1175 /* free the pointer tables used for cloning */
1176 ptr_table_free(PL_ptr_table);
1177 PL_ptr_table = (PTR_TBL_t*)NULL;
1180 /* free special SVs */
1182 SvREFCNT(&PL_sv_yes) = 0;
1183 sv_clear(&PL_sv_yes);
1184 SvANY(&PL_sv_yes) = NULL;
1185 SvFLAGS(&PL_sv_yes) = 0;
1187 SvREFCNT(&PL_sv_no) = 0;
1188 sv_clear(&PL_sv_no);
1189 SvANY(&PL_sv_no) = NULL;
1190 SvFLAGS(&PL_sv_no) = 0;
1194 for (i=0; i<=2; i++) {
1195 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1196 sv_clear(PERL_DEBUG_PAD(i));
1197 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1198 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1202 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1203 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1205 #ifdef DEBUG_LEAKING_SCALARS
1206 if (PL_sv_count != 0) {
1211 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1212 svend = &sva[SvREFCNT(sva)];
1213 for (sv = sva + 1; sv < svend; ++sv) {
1214 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1215 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1217 " refcnt=%"UVuf pTHX__FORMAT "\n"
1218 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1220 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1222 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1224 sv->sv_debug_inpad ? "for" : "by",
1225 sv->sv_debug_optype ?
1226 PL_op_name[sv->sv_debug_optype]: "(none)",
1227 PTR2UV(sv->sv_debug_parent),
1230 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1231 Perl_dump_sv_child(aTHX_ sv);
1237 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1241 /* Wait for up to 4 seconds for child to terminate.
1242 This seems to be the least effort way of timing out on reaping
1244 struct timeval waitfor = {4, 0};
1245 int sock = PL_dumper_fd;
1249 FD_SET(sock, &rset);
1250 select(sock + 1, &rset, NULL, NULL, &waitfor);
1251 waitpid(child, &status, WNOHANG);
1256 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1262 #if defined(PERLIO_LAYERS)
1263 /* No more IO - including error messages ! */
1264 PerlIO_cleanup(aTHX);
1267 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1268 as currently layers use it rather than NULL as a marker
1269 for no arg - and will try and SvREFCNT_dec it.
1271 SvREFCNT(&PL_sv_undef) = 0;
1272 SvREADONLY_off(&PL_sv_undef);
1274 Safefree(PL_origfilename);
1275 PL_origfilename = NULL;
1276 Safefree(PL_reg_curpm);
1277 free_tied_hv_pool();
1278 Safefree(PL_op_mask);
1279 Safefree(PL_psig_name);
1280 PL_psig_name = (SV**)NULL;
1281 PL_psig_ptr = (SV**)NULL;
1283 /* We need to NULL PL_psig_pend first, so that
1284 signal handlers know not to use it */
1285 int *psig_save = PL_psig_pend;
1286 PL_psig_pend = (int*)NULL;
1287 Safefree(psig_save);
1290 TAINTING_set(FALSE);
1291 TAINT_WARN_set(FALSE);
1292 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1295 DEBUG_P(debprofdump());
1297 #ifdef USE_REENTRANT_API
1298 Perl_reentrant_free(aTHX);
1303 while (PL_regmatch_slab) {
1304 regmatch_slab *s = PL_regmatch_slab;
1305 PL_regmatch_slab = PL_regmatch_slab->next;
1309 /* As the absolutely last thing, free the non-arena SV for mess() */
1312 /* we know that type == SVt_PVMG */
1314 /* it could have accumulated taint magic */
1317 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1318 moremagic = mg->mg_moremagic;
1319 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1321 Safefree(mg->mg_ptr);
1325 /* we know that type >= SVt_PV */
1326 SvPV_free(PL_mess_sv);
1327 Safefree(SvANY(PL_mess_sv));
1328 Safefree(PL_mess_sv);
1335 =for apidoc perl_free
1337 Releases a Perl interpreter. See L<perlembed>.
1347 PERL_ARGS_ASSERT_PERL_FREE;
1349 if (PL_veto_cleanup)
1352 #ifdef PERL_TRACK_MEMPOOL
1355 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1356 * value as we're probably hunting memory leaks then
1358 if (PL_perl_destruct_level == 0) {
1359 const U32 old_debug = PL_debug;
1360 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1361 thread at thread exit. */
1363 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1364 "free this thread's memory\n");
1365 PL_debug &= ~ DEBUG_m_FLAG;
1367 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1368 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1369 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1372 PL_debug = old_debug;
1377 #if defined(WIN32) || defined(NETWARE)
1378 # if defined(PERL_IMPLICIT_SYS)
1381 void *host = nw_internal_host;
1382 PerlMem_free(aTHXx);
1383 nw_delete_internal_host(host);
1385 void *host = w32_internal_host;
1386 PerlMem_free(aTHXx);
1387 win32_delete_internal_host(host);
1391 PerlMem_free(aTHXx);
1394 PerlMem_free(aTHXx);
1398 #if defined(USE_ITHREADS)
1399 /* provide destructors to clean up the thread key when libperl is unloaded */
1400 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1402 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1403 #pragma fini "perl_fini"
1404 #elif defined(__sun) && !defined(__GNUC__)
1405 #pragma fini (perl_fini)
1409 #if defined(__GNUC__)
1410 __attribute__((destructor))
1416 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1419 PL_curinterp && !PL_veto_cleanup)
1424 #endif /* THREADS */
1427 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1429 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1430 PL_exitlist[PL_exitlistlen].fn = fn;
1431 PL_exitlist[PL_exitlistlen].ptr = ptr;
1436 =for apidoc perl_parse
1438 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1443 #define SET_CURSTASH(newstash) \
1444 if (PL_curstash != newstash) { \
1445 SvREFCNT_dec(PL_curstash); \
1446 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1450 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1457 PERL_ARGS_ASSERT_PERL_PARSE;
1458 #ifndef MULTIPLICITY
1459 PERL_UNUSED_ARG(my_perl);
1461 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1463 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1465 if (s && (grok_atou(s, NULL) == 1)) {
1466 unsigned char *seed= PERL_HASH_SEED;
1467 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1468 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1469 while (seed < seed_end) {
1470 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1472 #ifdef PERL_HASH_RANDOMIZE_KEYS
1473 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1474 PL_HASH_RAND_BITS_ENABLED,
1475 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1477 PerlIO_printf(Perl_debug_log, "\n");
1480 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
1493 * the original argv[0]. (See below for 'contiguous', though.)
1495 const char *s = NULL;
1497 const UV mask = ~(UV)(PTRSIZE-1);
1498 /* Do the mask check only if the args seem like aligned. */
1500 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1502 /* See if all the arguments are contiguous in memory. Note
1503 * that 'contiguous' is a loose term because some platforms
1504 * align the argv[] and the envp[]. If the arguments look
1505 * like non-aligned, assume that they are 'strictly' or
1506 * 'traditionally' contiguous. If the arguments look like
1507 * aligned, we just check that they are within aligned
1508 * PTRSIZE bytes. As long as no system has something bizarre
1509 * like the argv[] interleaved with some other data, we are
1510 * fine. (Did I just evoke Murphy's Law?) --jhi */
1511 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1513 for (i = 1; i < PL_origargc; i++) {
1514 if ((PL_origargv[i] == s + 1
1516 || PL_origargv[i] == s + 2
1521 (PL_origargv[i] > s &&
1523 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1534 #ifndef PERL_USE_SAFE_PUTENV
1535 /* Can we grab env area too to be used as the area for $0? */
1536 if (s && PL_origenviron && !PL_use_safe_putenv) {
1537 if ((PL_origenviron[0] == s + 1)
1540 (PL_origenviron[0] > s &&
1541 PL_origenviron[0] <=
1542 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1546 s = PL_origenviron[0];
1549 my_setenv("NoNe SuCh", NULL);
1550 /* Force copy of environment. */
1551 for (i = 1; PL_origenviron[i]; i++) {
1552 if (PL_origenviron[i] == s + 1
1555 (PL_origenviron[i] > s &&
1556 PL_origenviron[i] <=
1557 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 s = PL_origenviron[i];
1568 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1570 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1575 /* Come here if running an undumped a.out. */
1577 PL_origfilename = savepv(argv[0]);
1578 PL_do_undump = FALSE;
1579 cxstack_ix = -1; /* start label stack again */
1581 assert (!TAINT_get);
1585 init_postdump_symbols(argc,argv,env);
1590 op_free(PL_main_root);
1591 PL_main_root = NULL;
1593 PL_main_start = NULL;
1594 SvREFCNT_dec(PL_main_cv);
1598 oldscope = PL_scopestack_ix;
1599 PL_dowarn = G_WARN_OFF;
1604 parse_body(env,xsinit);
1605 if (PL_unitcheckav) {
1606 call_list(oldscope, PL_unitcheckav);
1609 PERL_SET_PHASE(PERL_PHASE_CHECK);
1610 call_list(oldscope, PL_checkav);
1618 /* my_exit() was called */
1619 while (PL_scopestack_ix > oldscope)
1622 SET_CURSTASH(PL_defstash);
1623 if (PL_unitcheckav) {
1624 call_list(oldscope, PL_unitcheckav);
1627 PERL_SET_PHASE(PERL_PHASE_CHECK);
1628 call_list(oldscope, PL_checkav);
1633 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1641 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1642 miniperl, and we need to see those flags reflected in the values here. */
1644 /* What this returns is subject to change. Use the public interface in Config.
1647 S_Internals_V(pTHX_ CV *cv)
1650 #ifdef LOCAL_PATCH_COUNT
1651 const int local_patch_count = LOCAL_PATCH_COUNT;
1653 const int local_patch_count = 0;
1655 const int entries = 3 + local_patch_count;
1657 static const char non_bincompat_options[] =
1664 # ifdef NO_HASH_SEED
1667 # ifdef NO_TAINT_SUPPORT
1670 # ifdef PERL_BOOL_AS_CHAR
1671 " PERL_BOOL_AS_CHAR"
1673 # ifdef PERL_DISABLE_PMC
1676 # ifdef PERL_DONT_CREATE_GVSV
1677 " PERL_DONT_CREATE_GVSV"
1679 # ifdef PERL_EXTERNAL_GLOB
1680 " PERL_EXTERNAL_GLOB"
1682 # ifdef PERL_HASH_FUNC_SIPHASH
1683 " PERL_HASH_FUNC_SIPHASH"
1685 # ifdef PERL_HASH_FUNC_SDBM
1686 " PERL_HASH_FUNC_SDBM"
1688 # ifdef PERL_HASH_FUNC_DJB2
1689 " PERL_HASH_FUNC_DJB2"
1691 # ifdef PERL_HASH_FUNC_SUPERFAST
1692 " PERL_HASH_FUNC_SUPERFAST"
1694 # ifdef PERL_HASH_FUNC_MURMUR3
1695 " PERL_HASH_FUNC_MURMUR3"
1697 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1698 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1700 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1701 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1703 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1704 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1706 # ifdef PERL_IS_MINIPERL
1709 # ifdef PERL_MALLOC_WRAP
1712 # ifdef PERL_MEM_LOG
1715 # ifdef PERL_MEM_LOG_NOIMPL
1716 " PERL_MEM_LOG_NOIMPL"
1718 # ifdef PERL_NEW_COPY_ON_WRITE
1719 " PERL_NEW_COPY_ON_WRITE"
1721 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1722 " PERL_PERTURB_KEYS_DETERMINISTIC"
1724 # ifdef PERL_PERTURB_KEYS_DISABLED
1725 " PERL_PERTURB_KEYS_DISABLED"
1727 # ifdef PERL_PERTURB_KEYS_RANDOM
1728 " PERL_PERTURB_KEYS_RANDOM"
1730 # ifdef PERL_PRESERVE_IVUV
1731 " PERL_PRESERVE_IVUV"
1733 # ifdef PERL_RELOCATABLE_INCPUSH
1734 " PERL_RELOCATABLE_INCPUSH"
1736 # ifdef PERL_USE_DEVEL
1739 # ifdef PERL_USE_SAFE_PUTENV
1740 " PERL_USE_SAFE_PUTENV"
1742 # ifdef UNLINK_ALL_VERSIONS
1743 " UNLINK_ALL_VERSIONS"
1745 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1746 " USE_ATTRIBUTES_FOR_PERLIO"
1748 # ifdef USE_FAST_STDIO
1751 # ifdef USE_HASH_SEED_EXPLICIT
1752 " USE_HASH_SEED_EXPLICIT"
1757 # ifdef USE_LOCALE_CTYPE
1760 # ifdef USE_PERL_ATOF
1763 # ifdef USE_SITECUSTOMIZE
1764 " USE_SITECUSTOMIZE"
1767 PERL_UNUSED_ARG(cv);
1768 PERL_UNUSED_ARG(items);
1770 EXTEND(SP, entries);
1772 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1773 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1774 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1778 PUSHs(Perl_newSVpvn_flags(aTHX_
1779 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1782 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1786 PUSHs(&PL_sv_undef);
1789 for (i = 1; i <= local_patch_count; i++) {
1790 /* This will be an undef, if PL_localpatches[i] is NULL. */
1791 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1797 #define INCPUSH_UNSHIFT 0x01
1798 #define INCPUSH_ADD_OLD_VERS 0x02
1799 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1800 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1801 #define INCPUSH_NOT_BASEDIR 0x10
1802 #define INCPUSH_CAN_RELOCATE 0x20
1803 #define INCPUSH_ADD_SUB_DIRS \
1804 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1807 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1811 int argc = PL_origargc;
1812 char **argv = PL_origargv;
1813 const char *scriptname = NULL;
1814 VOL bool dosearch = FALSE;
1816 bool doextract = FALSE;
1817 const char *cddir = NULL;
1818 #ifdef USE_SITECUSTOMIZE
1819 bool minus_f = FALSE;
1821 SV *linestr_sv = NULL;
1822 bool add_read_e_script = FALSE;
1823 U32 lex_start_flags = 0;
1825 PERL_SET_PHASE(PERL_PHASE_START);
1831 for (argc--,argv++; argc > 0; argc--,argv++) {
1832 if (argv[0][0] != '-' || !argv[0][1])
1838 #ifndef PERL_STRICT_CR
1862 if ((s = moreswitches(s)))
1867 #if defined(SILENT_NO_TAINT_SUPPORT)
1868 /* silently ignore */
1869 #elif defined(NO_TAINT_SUPPORT)
1870 Perl_croak_nocontext("This perl was compiled without taint support. "
1871 "Cowardly refusing to run with -t or -T flags");
1873 CHECK_MALLOC_TOO_LATE_FOR('t');
1874 if( !TAINTING_get ) {
1875 TAINT_WARN_set(TRUE);
1882 #if defined(SILENT_NO_TAINT_SUPPORT)
1883 /* silently ignore */
1884 #elif defined(NO_TAINT_SUPPORT)
1885 Perl_croak_nocontext("This perl was compiled without taint support. "
1886 "Cowardly refusing to run with -t or -T flags");
1888 CHECK_MALLOC_TOO_LATE_FOR('T');
1890 TAINT_WARN_set(FALSE);
1899 forbid_setid('e', FALSE);
1901 PL_e_script = newSVpvs("");
1902 add_read_e_script = TRUE;
1905 sv_catpv(PL_e_script, s);
1907 sv_catpv(PL_e_script, argv[1]);
1911 Perl_croak(aTHX_ "No code specified for -%c", c);
1912 sv_catpvs(PL_e_script, "\n");
1916 #ifdef USE_SITECUSTOMIZE
1922 case 'I': /* -I handled both here and in moreswitches() */
1923 forbid_setid('I', FALSE);
1924 if (!*++s && (s=argv[1]) != NULL) {
1928 STRLEN len = strlen(s);
1929 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1932 Perl_croak(aTHX_ "No directory specified for -I");
1935 forbid_setid('S', FALSE);
1944 opts_prog = newSVpvs("use Config; Config::_V()");
1948 opts_prog = Perl_newSVpvf(aTHX_
1949 "use Config; Config::config_vars(qw%c%s%c)",
1953 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1954 /* don't look for script or read stdin */
1955 scriptname = BIT_BUCKET;
1967 if (!*++s || isSPACE(*s)) {
1971 /* catch use of gnu style long options.
1972 Both of these exit immediately. */
1973 if (strEQ(s, "version"))
1975 if (strEQ(s, "help"))
1980 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1991 #ifndef SECURE_INTERNAL_GETENV
1994 (s = PerlEnv_getenv("PERL5OPT")))
1998 if (*s == '-' && *(s+1) == 'T') {
1999 #if defined(SILENT_NO_TAINT_SUPPORT)
2000 /* silently ignore */
2001 #elif defined(NO_TAINT_SUPPORT)
2002 Perl_croak_nocontext("This perl was compiled without taint support. "
2003 "Cowardly refusing to run with -t or -T flags");
2005 CHECK_MALLOC_TOO_LATE_FOR('T');
2007 TAINT_WARN_set(FALSE);
2011 char *popt_copy = NULL;
2024 if (!strchr("CDIMUdmtwW", *s))
2025 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2029 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2030 s = popt_copy + (s - d);
2038 #if defined(SILENT_NO_TAINT_SUPPORT)
2039 /* silently ignore */
2040 #elif defined(NO_TAINT_SUPPORT)
2041 Perl_croak_nocontext("This perl was compiled without taint support. "
2042 "Cowardly refusing to run with -t or -T flags");
2044 if( !TAINTING_get) {
2045 TAINT_WARN_set(TRUE);
2057 /* Set $^X early so that it can be used for relocatable paths in @INC */
2058 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2059 assert (!TAINT_get);
2064 #if defined(USE_SITECUSTOMIZE)
2066 /* The games with local $! are to avoid setting errno if there is no
2067 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2068 ie a q() operator with a NUL byte as a the delimiter. This avoids
2069 problems with pathnames containing (say) ' */
2070 # ifdef PERL_IS_MINIPERL
2071 AV *const inc = GvAV(PL_incgv);
2072 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2075 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2076 it should be reported immediately as a build failure. */
2077 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2079 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2080 "do {local $!; -f $f }"
2081 " and do $f || die $@ || qq '$f: $!' }",
2082 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2085 /* SITELIB_EXP is a function call on Win32. */
2086 const char *const raw_sitelib = SITELIB_EXP;
2088 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2089 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2090 INCPUSH_CAN_RELOCATE);
2091 const char *const sitelib = SvPVX(sitelib_sv);
2092 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2094 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2095 0, SVfARG(sitelib), 0,
2096 0, SVfARG(sitelib), 0));
2097 assert (SvREFCNT(sitelib_sv) == 1);
2098 SvREFCNT_dec(sitelib_sv);
2105 scriptname = argv[0];
2108 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2110 else if (scriptname == NULL) {
2112 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2118 assert (!TAINT_get);
2122 bool suidscript = FALSE;
2124 rsfp = open_script(scriptname, dosearch, &suidscript);
2126 rsfp = PerlIO_stdin();
2127 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2130 validate_suid(rsfp);
2133 # if defined(SIGCHLD) || defined(SIGCLD)
2136 # define SIGCHLD SIGCLD
2138 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2139 if (sigstate == (Sighandler_t) SIG_IGN) {
2140 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2141 "Can't ignore signal CHLD, forcing to default");
2142 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2150 /* This will croak if suidscript is true, as -x cannot be used with
2152 forbid_setid('x', suidscript);
2153 /* Hence you can't get here if suidscript is true */
2155 linestr_sv = newSV_type(SVt_PV);
2156 lex_start_flags |= LEX_START_COPIED;
2157 find_beginning(linestr_sv, rsfp);
2158 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2159 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2163 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2164 CvUNIQUE_on(PL_compcv);
2166 CvPADLIST_set(PL_compcv, pad_new(0));
2168 PL_isarev = newHV();
2171 boot_core_UNIVERSAL();
2173 newXS("Internals::V", S_Internals_V, __FILE__);
2176 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2178 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2184 # ifdef HAS_SOCKS5_INIT
2185 socks5_init(argv[0]);
2191 init_predump_symbols();
2192 /* init_postdump_symbols not currently designed to be called */
2193 /* more than once (ENV isn't cleared first, for example) */
2194 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2196 init_postdump_symbols(argc,argv,env);
2198 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2199 * or explicitly in some platforms.
2200 * locale.c:Perl_init_i18nl10n() if the environment
2201 * look like the user wants to use UTF-8. */
2202 #if defined(__SYMBIAN32__)
2203 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2205 # ifndef PERL_IS_MINIPERL
2207 /* Requires init_predump_symbols(). */
2208 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2213 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2214 * and the default open disciplines. */
2215 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2216 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2220 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2222 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2223 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2224 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2226 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2227 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2228 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2230 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2231 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2234 sv_setpvs(sv, ":utf8\0:utf8");
2236 sv_setpvs(sv, ":utf8\0");
2239 sv_setpvs(sv, "\0:utf8");
2248 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2249 if (strEQ(s, "unsafe"))
2250 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2251 else if (strEQ(s, "safe"))
2252 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2254 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2259 lex_start(linestr_sv, rsfp, lex_start_flags);
2260 SvREFCNT_dec(linestr_sv);
2262 PL_subname = newSVpvs("main");
2264 if (add_read_e_script)
2265 filter_add(read_e_script, NULL);
2267 /* now parse the script */
2269 SETERRNO(0,SS_NORMAL);
2270 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2272 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2274 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2278 CopLINE_set(PL_curcop, 0);
2279 SET_CURSTASH(PL_defstash);
2281 SvREFCNT_dec(PL_e_script);
2289 SAVECOPFILE(PL_curcop);
2290 SAVECOPLINE(PL_curcop);
2291 gv_check(PL_defstash);
2300 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2301 dump_mstats("after compilation:");
2306 PL_restartjmpenv = NULL;
2312 =for apidoc perl_run
2314 Tells a Perl interpreter to run. See L<perlembed>.
2326 PERL_ARGS_ASSERT_PERL_RUN;
2327 #ifndef MULTIPLICITY
2328 PERL_UNUSED_ARG(my_perl);
2331 oldscope = PL_scopestack_ix;
2339 cxstack_ix = -1; /* start context stack again */
2341 case 0: /* normal completion */
2345 case 2: /* my_exit() */
2346 while (PL_scopestack_ix > oldscope)
2349 SET_CURSTASH(PL_defstash);
2350 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2351 PL_endav && !PL_minus_c) {
2352 PERL_SET_PHASE(PERL_PHASE_END);
2353 call_list(oldscope, PL_endav);
2356 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2357 dump_mstats("after execution: ");
2363 POPSTACK_TO(PL_mainstack);
2366 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2377 S_run_body(pTHX_ I32 oldscope)
2379 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2380 PL_sawampersand ? "Enabling" : "Omitting",
2381 (unsigned int)(PL_sawampersand)));
2383 if (!PL_restartop) {
2385 if (DEBUG_x_TEST || DEBUG_B_TEST)
2386 dump_all_perl(!DEBUG_B_TEST);
2388 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2392 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2395 if (PERLDB_SINGLE && PL_DBsingle)
2398 PERL_SET_PHASE(PERL_PHASE_INIT);
2399 call_list(oldscope, PL_initav);
2401 #ifdef PERL_DEBUG_READONLY_OPS
2402 if (PL_main_root && PL_main_root->op_slabbed)
2403 Slab_to_ro(OpSLAB(PL_main_root));
2409 PERL_SET_PHASE(PERL_PHASE_RUN);
2412 PL_restartjmpenv = NULL;
2413 PL_op = PL_restartop;
2417 else if (PL_main_start) {
2418 CvDEPTH(PL_main_cv) = 1;
2419 PL_op = PL_main_start;
2423 assert(0); /* NOTREACHED */
2427 =head1 SV Manipulation Functions
2429 =for apidoc p||get_sv
2431 Returns the SV of the specified Perl scalar. C<flags> are passed to
2432 C<gv_fetchpv>. If C<GV_ADD> is set and the
2433 Perl variable does not exist then it will be created. If C<flags> is zero
2434 and the variable does not exist then NULL is returned.
2440 Perl_get_sv(pTHX_ const char *name, I32 flags)
2444 PERL_ARGS_ASSERT_GET_SV;
2446 gv = gv_fetchpv(name, flags, SVt_PV);
2453 =head1 Array Manipulation Functions
2455 =for apidoc p||get_av
2457 Returns the AV of the specified Perl global or package array with the given
2458 name (so it won't work on lexical variables). C<flags> are passed
2459 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2460 Perl variable does not exist then it will be created. If C<flags> is zero
2461 and the variable does not exist then NULL is returned.
2463 Perl equivalent: C<@{"$name"}>.
2469 Perl_get_av(pTHX_ const char *name, I32 flags)
2471 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2473 PERL_ARGS_ASSERT_GET_AV;
2483 =head1 Hash Manipulation Functions
2485 =for apidoc p||get_hv
2487 Returns the HV of the specified Perl hash. C<flags> are passed to
2488 C<gv_fetchpv>. If C<GV_ADD> is set and the
2489 Perl variable does not exist then it will be created. If C<flags> is zero
2490 and the variable does not exist then NULL is returned.
2496 Perl_get_hv(pTHX_ const char *name, I32 flags)
2498 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2500 PERL_ARGS_ASSERT_GET_HV;
2510 =head1 CV Manipulation Functions
2512 =for apidoc p||get_cvn_flags
2514 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2515 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2516 exist then it will be declared (which has the same effect as saying
2517 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2518 then NULL is returned.
2520 =for apidoc p||get_cv
2522 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2528 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2530 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2532 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2534 /* XXX this is probably not what they think they're getting.
2535 * It has the same effect as "sub name;", i.e. just a forward
2537 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2538 return newSTUB(gv,0);
2545 /* Nothing in core calls this now, but we can't replace it with a macro and
2546 move it to mathoms.c as a macro would evaluate name twice. */
2548 Perl_get_cv(pTHX_ const char *name, I32 flags)
2550 PERL_ARGS_ASSERT_GET_CV;
2552 return get_cvn_flags(name, strlen(name), flags);
2555 /* Be sure to refetch the stack pointer after calling these routines. */
2559 =head1 Callback Functions
2561 =for apidoc p||call_argv
2563 Performs a callback to the specified named and package-scoped Perl subroutine
2564 with C<argv> (a NULL-terminated array of strings) as arguments. See
2567 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2573 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2575 /* See G_* flags in cop.h */
2576 /* null terminated arg list */
2580 PERL_ARGS_ASSERT_CALL_ARGV;
2585 mXPUSHs(newSVpv(*argv,0));
2590 return call_pv(sub_name, flags);
2594 =for apidoc p||call_pv
2596 Performs a callback to the specified Perl sub. See L<perlcall>.
2602 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
2606 PERL_ARGS_ASSERT_CALL_PV;
2608 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2612 =for apidoc p||call_method
2614 Performs a callback to the specified Perl method. The blessed object must
2615 be on the stack. See L<perlcall>.
2621 Perl_call_method(pTHX_ const char *methname, I32 flags)
2622 /* name of the subroutine */
2623 /* See G_* flags in cop.h */
2627 PERL_ARGS_ASSERT_CALL_METHOD;
2629 len = strlen(methname);
2630 sv = flags & G_METHOD_NAMED
2631 ? sv_2mortal(newSVpvn_share(methname, len,0))
2632 : newSVpvn_flags(methname, len, SVs_TEMP);
2634 return call_sv(sv, flags | G_METHOD);
2637 /* May be called with any of a CV, a GV, or an SV containing the name. */
2639 =for apidoc p||call_sv
2641 Performs a callback to the Perl sub whose name is in the SV. See
2648 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2649 /* See G_* flags in cop.h */
2652 LOGOP myop; /* fake syntax tree node */
2657 bool oldcatch = CATCH_GET;
2659 OP* const oldop = PL_op;
2662 PERL_ARGS_ASSERT_CALL_SV;
2664 if (flags & G_DISCARD) {
2668 if (!(flags & G_WANT)) {
2669 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2674 Zero(&myop, 1, LOGOP);
2675 if (!(flags & G_NOARGS))
2676 myop.op_flags |= OPf_STACKED;
2677 myop.op_flags |= OP_GIMME_REVERSE(flags);
2681 EXTEND(PL_stack_sp, 1);
2682 if (!(flags & G_METHOD_NAMED))
2683 *++PL_stack_sp = sv;
2685 oldscope = PL_scopestack_ix;
2687 if (PERLDB_SUB && PL_curstash != PL_debstash
2688 /* Handle first BEGIN of -d. */
2689 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2690 /* Try harder, since this may have been a sighandler, thus
2691 * curstash may be meaningless. */
2692 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2693 && !(flags & G_NODEBUG))
2694 myop.op_private |= OPpENTERSUB_DB;
2696 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2697 Zero(&method_op, 1, METHOP);
2698 method_op.op_next = (OP*)&myop;
2699 PL_op = (OP*)&method_op;
2700 if ( flags & G_METHOD_NAMED ) {
2701 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2702 method_op.op_type = OP_METHOD_NAMED;
2703 method_op.op_u.op_meth_sv = sv;
2705 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2706 method_op.op_type = OP_METHOD;
2708 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2709 myop.op_type = OP_ENTERSUB;
2712 if (!(flags & G_EVAL)) {
2714 CALL_BODY_SUB((OP*)&myop);
2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
2716 CATCH_SET(oldcatch);
2719 myop.op_other = (OP*)&myop;
2721 create_eval_scope(flags|G_FAKINGEVAL);
2729 CALL_BODY_SUB((OP*)&myop);
2730 retval = PL_stack_sp - (PL_stack_base + oldmark);
2731 if (!(flags & G_KEEPERR)) {
2739 /* my_exit() was called */
2740 SET_CURSTASH(PL_defstash);
2744 assert(0); /* NOTREACHED */
2747 PL_restartjmpenv = NULL;
2748 PL_op = PL_restartop;
2752 PL_stack_sp = PL_stack_base + oldmark;
2753 if ((flags & G_WANT) == G_ARRAY)
2757 *++PL_stack_sp = &PL_sv_undef;
2762 if (PL_scopestack_ix > oldscope)
2763 delete_eval_scope();
2767 if (flags & G_DISCARD) {
2768 PL_stack_sp = PL_stack_base + oldmark;
2777 /* Eval a string. The G_EVAL flag is always assumed. */
2780 =for apidoc p||eval_sv
2782 Tells Perl to C<eval> the string in the SV. It supports the same flags
2783 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2789 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2791 /* See G_* flags in cop.h */
2795 UNOP myop; /* fake syntax tree node */
2796 VOL I32 oldmark = SP - PL_stack_base;
2799 OP* const oldop = PL_op;
2802 PERL_ARGS_ASSERT_EVAL_SV;
2804 if (flags & G_DISCARD) {
2811 Zero(&myop, 1, UNOP);
2812 EXTEND(PL_stack_sp, 1);
2813 *++PL_stack_sp = sv;
2815 if (!(flags & G_NOARGS))
2816 myop.op_flags = OPf_STACKED;
2817 myop.op_type = OP_ENTEREVAL;
2818 myop.op_flags |= OP_GIMME_REVERSE(flags);
2819 if (flags & G_KEEPERR)
2820 myop.op_flags |= OPf_SPECIAL;
2822 if (flags & G_RE_REPARSING)
2823 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2825 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2826 * before a PUSHEVAL, which corrupts the stack after a croak */
2827 TAINT_PROPER("eval_sv()");
2833 if (PL_op == (OP*)(&myop)) {
2834 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2836 goto fail; /* failed in compilation */
2839 retval = PL_stack_sp - (PL_stack_base + oldmark);
2840 if (!(flags & G_KEEPERR)) {
2848 /* my_exit() was called */
2849 SET_CURSTASH(PL_defstash);
2853 assert(0); /* NOTREACHED */
2856 PL_restartjmpenv = NULL;
2857 PL_op = PL_restartop;
2862 PL_stack_sp = PL_stack_base + oldmark;
2863 if ((flags & G_WANT) == G_ARRAY)
2867 *++PL_stack_sp = &PL_sv_undef;
2873 if (flags & G_DISCARD) {
2874 PL_stack_sp = PL_stack_base + oldmark;
2884 =for apidoc p||eval_pv
2886 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2892 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2894 SV* sv = newSVpv(p, 0);
2896 PERL_ARGS_ASSERT_EVAL_PV;
2898 eval_sv(sv, G_SCALAR);
2907 /* just check empty string or undef? */
2908 if (croak_on_error) {
2909 SV * const errsv = ERRSV;
2910 if(SvTRUE_NN(errsv))
2911 /* replace with croak_sv? */
2912 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2918 /* Require a module. */
2921 =head1 Embedding Functions
2923 =for apidoc p||require_pv
2925 Tells Perl to C<require> the file named by the string argument. It is
2926 analogous to the Perl code C<eval "require '$file'">. It's even
2927 implemented that way; consider using load_module instead.
2932 Perl_require_pv(pTHX_ const char *pv)
2937 PERL_ARGS_ASSERT_REQUIRE_PV;
2939 PUSHSTACKi(PERLSI_REQUIRE);
2940 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2941 eval_sv(sv_2mortal(sv), G_DISCARD);
2946 S_usage(pTHX) /* XXX move this out into a module ? */
2948 /* This message really ought to be max 23 lines.
2949 * Removed -h because the user already knows that option. Others? */
2951 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2952 minimum of 509 character string literals. */
2953 static const char * const usage_msg[] = {
2954 " -0[octal] specify record separator (\\0, if no argument)\n"
2955 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2956 " -C[number/list] enables the listed Unicode features\n"
2957 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2958 " -d[:debugger] run program under debugger\n"
2959 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2960 " -e program one line of program (several -e's allowed, omit programfile)\n"
2961 " -E program like -e, but enables all optional features\n"
2962 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2963 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2964 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2965 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2966 " -l[octal] enable line ending processing, specifies line terminator\n"
2967 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2968 " -n assume \"while (<>) { ... }\" loop around program\n"
2969 " -p assume loop like -n but print line also, like sed\n"
2970 " -s enable rudimentary parsing for switches after programfile\n"
2971 " -S look for programfile using PATH environment variable\n",
2972 " -t enable tainting warnings\n"
2973 " -T enable tainting checks\n"
2974 " -u dump core after parsing program\n"
2975 " -U allow unsafe operations\n"
2976 " -v print version, patchlevel and license\n"
2977 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2978 " -w enable many useful warnings\n"
2979 " -W enable all warnings\n"
2980 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2981 " -X disable all warnings\n"
2983 "Run 'perldoc perl' for more help with Perl.\n\n",
2986 const char * const *p = usage_msg;
2987 PerlIO *out = PerlIO_stdout();
2990 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
2993 PerlIO_puts(out, *p++);
2997 /* convert a string of -D options (or digits) into an int.
2998 * sets *s to point to the char after the options */
3002 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3004 static const char * const usage_msgd[] = {
3005 " Debugging flag values: (see also -d)\n"
3006 " p Tokenizing and parsing (with v, displays parse stack)\n"
3007 " s Stack snapshots (with v, displays all stacks)\n"
3008 " l Context (loop) stack processing\n"
3009 " t Trace execution\n"
3010 " o Method and overloading resolution\n",
3011 " c String/numeric conversions\n"
3012 " P Print profiling info, source file input state\n"
3013 " m Memory and SV allocation\n"
3014 " f Format processing\n"
3015 " r Regular expression parsing and execution\n"
3016 " x Syntax tree dump\n",
3017 " u Tainting checks\n"
3018 " H Hash dump -- usurps values()\n"
3019 " X Scratchpad allocation\n"
3021 " S Op slab allocation\n"
3023 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3024 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3025 " v Verbose: use in conjunction with other flags\n"
3026 " C Copy On Write\n"
3027 " A Consistency checks on internal structures\n"
3028 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3029 " M trace smart match resolution\n"
3030 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3031 " L trace some locale setting information--for Perl core development\n",
3036 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3039 /* if adding extra options, remember to update DEBUG_MASK */
3040 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3042 for (; isWORDCHAR(**s); (*s)++) {
3043 const char * const d = strchr(debopts,**s);
3045 i |= 1 << (d - debopts);
3046 else if (ckWARN_d(WARN_DEBUGGING))
3047 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3048 "invalid option -D%c, use -D'' to see choices\n", **s);
3051 else if (isDIGIT(**s)) {
3053 i = grok_atou(*s, &e);
3056 for (; isWORDCHAR(**s); (*s)++) ;
3058 else if (givehelp) {
3059 const char *const *p = usage_msgd;
3060 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3063 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3065 "-Dp not implemented on this platform\n");
3071 /* This routine handles any switches that can be given during run */
3074 Perl_moreswitches(pTHX_ const char *s)
3078 const char option = *s; /* used to remember option in -m/-M code */
3080 PERL_ARGS_ASSERT_MORESWITCHES;
3088 SvREFCNT_dec(PL_rs);
3089 if (s[1] == 'x' && s[2]) {
3090 const char *e = s+=2;
3096 flags = PERL_SCAN_SILENT_ILLDIGIT;
3097 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3098 if (s + numlen < e) {
3099 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3103 PL_rs = newSVpvs("");
3104 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3105 tmps = (U8*)SvPVX(PL_rs);
3106 uvchr_to_utf8(tmps, rschar);
3107 SvCUR_set(PL_rs, UNISKIP(rschar));
3112 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3113 if (rschar & ~((U8)~0))
3114 PL_rs = &PL_sv_undef;
3115 else if (!rschar && numlen >= 2)
3116 PL_rs = newSVpvs("");
3118 char ch = (char)rschar;
3119 PL_rs = newSVpvn(&ch, 1);
3122 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3127 PL_unicode = parse_unicode_opts( (const char **)&s );
3128 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3136 while (*s && !isSPACE(*s)) ++s;
3137 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3149 forbid_setid('d', FALSE);
3152 /* -dt indicates to the debugger that threads will be used */
3153 if (*s == 't' && !isWORDCHAR(s[1])) {
3155 my_setenv("PERL5DB_THREADED", "1");
3158 /* The following permits -d:Mod to accepts arguments following an =
3159 in the fashion that -MSome::Mod does. */
3160 if (*s == ':' || *s == '=') {
3167 sv = newSVpvs("no Devel::");
3169 sv = newSVpvs("use Devel::");
3173 end = s + strlen(s);
3175 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3176 while(isWORDCHAR(*s) || *s==':') ++s;
3178 sv_catpvn(sv, start, end - start);
3180 sv_catpvn(sv, start, s-start);
3181 /* Don't use NUL as q// delimiter here, this string goes in the
3183 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3186 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3190 PL_perldb = PERLDB_ALL;
3197 forbid_setid('D', FALSE);
3199 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3200 #else /* !DEBUGGING */
3201 if (ckWARN_d(WARN_DEBUGGING))
3202 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3203 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3204 for (s++; isWORDCHAR(*s); s++) ;
3211 Safefree(PL_inplace);
3212 #if defined(__CYGWIN__) /* do backup extension automagically */
3213 if (*(s+1) == '\0') {
3214 PL_inplace = savepvs(".bak");
3217 #endif /* __CYGWIN__ */
3219 const char * const start = ++s;
3220 while (*s && !isSPACE(*s))
3223 PL_inplace = savepvn(start, s - start);
3227 if (*s == '-') /* Additional switches on #! line. */
3231 case 'I': /* -I handled both here and in parse_body() */
3232 forbid_setid('I', FALSE);
3234 while (*s && isSPACE(*s))
3239 /* ignore trailing spaces (possibly followed by other switches) */
3241 for (e = p; *e && !isSPACE(*e); e++) ;
3245 } while (*p && *p != '-');
3247 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3253 Perl_croak(aTHX_ "No directory specified for -I");
3259 SvREFCNT_dec(PL_ors_sv);
3265 PL_ors_sv = newSVpvs("\n");
3266 numlen = 3 + (*s == '0');
3267 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3271 if (RsPARA(PL_rs)) {
3272 PL_ors_sv = newSVpvs("\n\n");
3275 PL_ors_sv = newSVsv(PL_rs);
3280 forbid_setid('M', FALSE); /* XXX ? */
3283 forbid_setid('m', FALSE); /* XXX ? */
3288 const char *use = "use ";
3290 /* -M-foo == 'no foo' */
3291 /* Leading space on " no " is deliberate, to make both
3292 possibilities the same length. */
3293 if (*s == '-') { use = " no "; ++s; }
3294 sv = newSVpvn(use,4);
3296 /* We allow -M'Module qw(Foo Bar)' */
3297 while(isWORDCHAR(*s) || *s==':') {
3306 Perl_croak(aTHX_ "Module name required with -%c option",
3309 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3310 "contains single ':'",
3311 (int)(s - start), start, option);
3312 end = s + strlen(s);
3314 sv_catpvn(sv, start, end - start);
3315 if (option == 'm') {
3317 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3318 sv_catpvs( sv, " ()");
3321 sv_catpvn(sv, start, s-start);
3322 /* Use NUL as q''-delimiter. */
3323 sv_catpvs(sv, " split(/,/,q\0");
3325 sv_catpvn(sv, s, end - s);
3326 sv_catpvs(sv, "\0)");
3329 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3332 Perl_croak(aTHX_ "Missing argument to -%c", option);
3343 forbid_setid('s', FALSE);
3344 PL_doswitches = TRUE;
3349 #if defined(SILENT_NO_TAINT_SUPPORT)
3350 /* silently ignore */
3351 #elif defined(NO_TAINT_SUPPORT)
3352 Perl_croak_nocontext("This perl was compiled without taint support. "
3353 "Cowardly refusing to run with -t or -T flags");
3361 PL_do_undump = TRUE;
3371 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3372 PL_dowarn |= G_WARN_ON;
3377 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3378 if (!specialWARN(PL_compiling.cop_warnings))
3379 PerlMemShared_free(PL_compiling.cop_warnings);
3380 PL_compiling.cop_warnings = pWARN_ALL ;
3384 PL_dowarn = G_WARN_ALL_OFF;
3385 if (!specialWARN(PL_compiling.cop_warnings))
3386 PerlMemShared_free(PL_compiling.cop_warnings);
3387 PL_compiling.cop_warnings = pWARN_NONE ;
3394 if (s[0] == '-') /* Additional switches on #! line. */
3399 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3405 #ifdef ALTERNATE_SHEBANG
3406 case 'S': /* OS/2 needs -S on "extproc" line. */
3409 case 'e': case 'f': case 'x': case 'E':
3410 #ifndef ALTERNATE_SHEBANG
3414 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3417 "Unrecognized switch: -%.1s (-h will show valid options)",s
3427 PerlIO * PIO_stdout;
3429 const char * const level_str = "v" PERL_VERSION_STRING;
3430 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3431 #ifdef PERL_PATCHNUM
3433 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3434 static const char num [] = PERL_PATCHNUM "*";
3436 static const char num [] = PERL_PATCHNUM;
3439 const STRLEN num_len = sizeof(num)-1;
3440 /* A very advanced compiler would fold away the strnEQ
3441 and this whole conditional, but most (all?) won't do it.
3442 SV level could also be replaced by with preprocessor
3445 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3446 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3447 of the interp so it might contain format characters
3449 level = newSVpvn(num, num_len);
3451 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3455 SV* level = newSVpvn(level_str, level_len);
3456 #endif /* #ifdef PERL_PATCHNUM */
3457 PIO_stdout = PerlIO_stdout();
3458 PerlIO_printf(PIO_stdout,
3459 "\nThis is perl " STRINGIFY(PERL_REVISION)
3460 ", version " STRINGIFY(PERL_VERSION)
3461 ", subversion " STRINGIFY(PERL_SUBVERSION)
3462 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3464 SvREFCNT_dec_NN(level);
3466 #if defined(LOCAL_PATCH_COUNT)
3467 if (LOCAL_PATCH_COUNT > 0)
3468 PerlIO_printf(PIO_stdout,
3469 "\n(with %d registered patch%s, "
3470 "see perl -V for more detail)",
3472 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3475 PerlIO_printf(PIO_stdout,
3476 "\n\nCopyright 1987-2014, Larry Wall\n");
3478 PerlIO_printf(PIO_stdout,
3479 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3482 PerlIO_printf(PIO_stdout,
3483 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3484 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3487 PerlIO_printf(PIO_stdout,
3488 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3489 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3492 PerlIO_printf(PIO_stdout,
3493 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3496 PerlIO_printf(PIO_stdout,
3497 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3500 PerlIO_printf(PIO_stdout,
3501 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3504 PerlIO_printf(PIO_stdout,
3505 "WINCE port by Rainer Keuchel, 2001-2002\n"
3506 "Built on " __DATE__ " " __TIME__ "\n\n");
3509 #ifdef __SYMBIAN32__
3510 PerlIO_printf(PIO_stdout,
3511 "Symbian port by Nokia, 2004-2005\n");
3513 #ifdef BINARY_BUILD_NOTICE
3514 BINARY_BUILD_NOTICE;
3516 PerlIO_printf(PIO_stdout,
3518 Perl may be copied only under the terms of either the Artistic License or the\n\
3519 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3520 Complete documentation for Perl, including FAQ lists, should be found on\n\
3521 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3522 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3526 /* compliments of Tom Christiansen */
3528 /* unexec() can be found in the Gnu emacs distribution */
3529 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3532 #include <lib$routines.h>
3536 Perl_my_unexec(pTHX)
3539 SV * prog = newSVpv(BIN_EXP, 0);
3540 SV * file = newSVpv(PL_origfilename, 0);
3544 sv_catpvs(prog, "/perl");
3545 sv_catpvs(file, ".perldump");
3547 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3548 /* unexec prints msg to stderr in case of failure */
3549 PerlProc_exit(status);
3551 PERL_UNUSED_CONTEXT;
3553 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3554 # elif defined(WIN32) || defined(__CYGWIN__)
3555 Perl_croak_nocontext("dump is not supported");
3557 ABORT(); /* for use with undump */
3562 /* initialize curinterp */
3567 # define PERLVAR(prefix,var,type)
3568 # define PERLVARA(prefix,var,n,type)
3569 # if defined(PERL_IMPLICIT_CONTEXT)
3570 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3571 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3573 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3574 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3576 # include "intrpvar.h"
3582 # define PERLVAR(prefix,var,type)
3583 # define PERLVARA(prefix,var,n,type)
3584 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3585 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3586 # include "intrpvar.h"
3596 S_init_main_stash(pTHX)
3600 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3601 /* We know that the string "main" will be in the global shared string
3602 table, so it's a small saving to use it rather than allocate another
3604 PL_curstname = newSVpvs_share("main");
3605 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3606 /* If we hadn't caused another reference to "main" to be in the shared
3607 string table above, then it would be worth reordering these two,
3608 because otherwise all we do is delete "main" from it as a consequence
3609 of the SvREFCNT_dec, only to add it again with hv_name_set */
3610 SvREFCNT_dec(GvHV(gv));
3611 hv_name_set(PL_defstash, "main", 4, 0);
3612 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3614 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3616 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3617 GvMULTI_on(PL_incgv);
3618 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3619 SvREFCNT_inc_simple_void(PL_hintgv);
3620 GvMULTI_on(PL_hintgv);
3621 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3622 SvREFCNT_inc_simple_void(PL_defgv);
3623 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3624 SvREFCNT_inc_simple_void(PL_errgv);
3625 GvMULTI_on(PL_errgv);
3626 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3627 SvREFCNT_inc_simple_void(PL_replgv);
3628 GvMULTI_on(PL_replgv);
3629 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3630 #ifdef PERL_DONT_CREATE_GVSV
3633 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3635 SET_CURSTASH(PL_defstash);
3636 CopSTASH_set(&PL_compiling, PL_defstash);
3637 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3638 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3640 /* We must init $/ before switches are processed. */
3641 sv_setpvs(get_sv("/", GV_ADD), "\n");
3645 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3648 PerlIO *rsfp = NULL;
3652 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3655 PL_origfilename = savepvs("-e");
3658 /* if find_script() returns, it returns a malloc()-ed value */
3659 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3661 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3662 const char *s = scriptname + 8;
3664 fdscript = grok_atou(s, &e);
3668 * Tell apart "normal" usage of fdscript, e.g.
3669 * with bash on FreeBSD:
3670 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3671 * from usage in suidperl.
3672 * Does any "normal" usage leave garbage after the number???
3673 * Is it a mistake to use a similar /dev/fd/ construct for
3678 * Be supersafe and do some sanity-checks.
3679 * Still, can we be sure we got the right thing?
3682 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3685 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3687 scriptname = savepv(s + 1);
3688 Safefree(PL_origfilename);
3689 PL_origfilename = (char *)scriptname;
3694 CopFILE_free(PL_curcop);
3695 CopFILE_set(PL_curcop, PL_origfilename);
3696 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3697 scriptname = (char *)"";
3698 if (fdscript >= 0) {
3699 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3701 else if (!*scriptname) {
3702 forbid_setid(0, *suidscript);
3706 #ifdef FAKE_BIT_BUCKET
3707 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3708 * is called) and still have the "-e" work. (Believe it or not,
3709 * a /dev/null is required for the "-e" to work because source
3710 * filter magic is used to implement it. ) This is *not* a general
3711 * replacement for a /dev/null. What we do here is create a temp
3712 * file (an empty file), open up that as the script, and then
3713 * immediately close and unlink it. Close enough for jazz. */
3714 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3715 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3716 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3717 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3718 FAKE_BIT_BUCKET_TEMPLATE
3720 const char * const err = "Failed to create a fake bit bucket";
3721 if (strEQ(scriptname, BIT_BUCKET)) {
3722 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3723 int old_umask = umask(0600);
3724 int tmpfd = mkstemp(tmpname);
3727 scriptname = tmpname;
3730 Perl_croak(aTHX_ err);
3733 scriptname = mktemp(tmpname);
3735 Perl_croak(aTHX_ err);
3740 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3741 #ifdef FAKE_BIT_BUCKET
3742 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3743 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3744 && strlen(scriptname) == sizeof(tmpname) - 1) {
3747 scriptname = BIT_BUCKET;
3751 /* PSz 16 Sep 03 Keep neat error message */
3753 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3755 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3756 CopFILE(PL_curcop), Strerror(errno));
3758 fd = PerlIO_fileno(rsfp);
3759 #if defined(HAS_FCNTL) && defined(F_SETFD)
3761 /* ensure close-on-exec */
3762 if (fcntl(fd, F_SETFD, 1) < 0) {
3763 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3764 CopFILE(PL_curcop), Strerror(errno));
3770 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3771 && S_ISDIR(tmpstatbuf.st_mode)))
3772 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3780 * I_SYSSTATVFS HAS_FSTATVFS
3782 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3783 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3784 * here so that metaconfig picks them up. */
3787 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3788 /* Don't even need this function. */
3791 S_validate_suid(pTHX_ PerlIO *rsfp)
3793 const Uid_t my_uid = PerlProc_getuid();
3794 const Uid_t my_euid = PerlProc_geteuid();
3795 const Gid_t my_gid = PerlProc_getgid();
3796 const Gid_t my_egid = PerlProc_getegid();
3798 PERL_ARGS_ASSERT_VALIDATE_SUID;
3800 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3802 int fd = PerlIO_fileno(rsfp);
3804 Perl_croak(aTHX_ "Illegal suidscript");
3806 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3807 Perl_croak(aTHX_ "Illegal suidscript");
3810 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3812 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3815 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3816 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3817 /* not set-id, must be wrapped */
3820 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3823 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3828 PERL_ARGS_ASSERT_FIND_BEGINNING;
3830 /* skip forward in input to the real script? */
3833 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3834 Perl_croak(aTHX_ "No Perl script found in input\n");
3836 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3837 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3838 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3840 while (*s == ' ' || *s == '\t') s++;
3842 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3843 || s2[-1] == '_') s2--;
3844 if (strnEQ(s2-4,"perl",4))
3845 while ((s = moreswitches(s)))
3854 /* no need to do anything here any more if we don't
3856 #ifndef NO_TAINT_SUPPORT
3857 const Uid_t my_uid = PerlProc_getuid();
3858 const Uid_t my_euid = PerlProc_geteuid();
3859 const Gid_t my_gid = PerlProc_getgid();
3860 const Gid_t my_egid = PerlProc_getegid();
3862 PERL_UNUSED_CONTEXT;
3864 /* Should not happen: */
3865 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3866 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3870 * Should go by suidscript, not uid!=euid: why disallow
3871 * system("ls") in scripts run from setuid things?
3872 * Or, is this run before we check arguments and set suidscript?
3873 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3874 * (We never have suidscript, can we be sure to have fdscript?)
3875 * Or must then go by UID checks? See comments in forbid_setid also.
3879 /* This is used very early in the lifetime of the program,
3880 * before even the options are parsed, so PL_tainting has
3881 * not been initialized properly. */
3883 Perl_doing_taint(int argc, char *argv[], char *envp[])
3885 #ifndef PERL_IMPLICIT_SYS
3886 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3887 * before we have an interpreter-- and the whole point of this
3888 * function is to be called at such an early stage. If you are on
3889 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3890 * "tainted because running with altered effective ids', you'll
3891 * have to add your own checks somewhere in here. The two most
3892 * known samples of 'implicitness' are Win32 and NetWare, neither
3893 * of which has much of concept of 'uids'. */
3894 Uid_t uid = PerlProc_getuid();
3895 Uid_t euid = PerlProc_geteuid();
3896 Gid_t gid = PerlProc_getgid();
3897 Gid_t egid = PerlProc_getegid();
3904 if (uid && (euid != uid || egid != gid))
3906 #endif /* !PERL_IMPLICIT_SYS */
3907 /* This is a really primitive check; environment gets ignored only
3908 * if -T are the first chars together; otherwise one gets
3909 * "Too late" message. */
3910 if ( argc > 1 && argv[1][0] == '-'
3911 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3916 /* Passing the flag as a single char rather than a string is a slight space
3917 optimisation. The only message that isn't /^-.$/ is
3918 "program input from stdin", which is substituted in place of '\0', which
3919 could never be a command line flag. */
3921 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3923 char string[3] = "-x";
3924 const char *message = "program input from stdin";
3926 PERL_UNUSED_CONTEXT;
3932 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3933 if (PerlProc_getuid() != PerlProc_geteuid())
3934 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3935 if (PerlProc_getgid() != PerlProc_getegid())
3936 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3937 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3939 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3943 Perl_init_dbargs(pTHX)
3945 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3950 /* Someone has already created it.
3951 It might have entries, and if we just turn off AvREAL(), they will
3952 "leak" until global destruction. */
3954 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3955 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3957 AvREIFY_only(PL_dbargs);
3961 Perl_init_debugger(pTHX)
3963 HV * const ostash = PL_curstash;
3966 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3968 Perl_init_dbargs(aTHX);
3969 PL_DBgv = MUTABLE_GV(
3970 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3972 PL_DBline = MUTABLE_GV(
3973 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3975 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3976 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3978 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3979 if (!SvIOK(PL_DBsingle))
3980 sv_setiv(PL_DBsingle, 0);
3981 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3982 mg->mg_private = DBVARMG_SINGLE;
3983 SvSETMAGIC(PL_DBsingle);
3985 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3986 if (!SvIOK(PL_DBtrace))
3987 sv_setiv(PL_DBtrace, 0);
3988 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3989 mg->mg_private = DBVARMG_TRACE;
3990 SvSETMAGIC(PL_DBtrace);
3992 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3993 if (!SvIOK(PL_DBsignal))
3994 sv_setiv(PL_DBsignal, 0);
3995 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3996 mg->mg_private = DBVARMG_SIGNAL;
3997 SvSETMAGIC(PL_DBsignal);
3999 SvREFCNT_dec(PL_curstash);
4000 PL_curstash = ostash;
4003 #ifndef STRESS_REALLOC
4004 #define REASONABLE(size) (size)
4005 #define REASONABLE_but_at_least(size,min) (size)
4007 #define REASONABLE(size) (1) /* unreasonable */
4008 #define REASONABLE_but_at_least(size,min) (min)
4012 Perl_init_stacks(pTHX)
4014 /* start with 128-item stack and 8K cxstack */
4015 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4016 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4017 PL_curstackinfo->si_type = PERLSI_MAIN;
4018 PL_curstack = PL_curstackinfo->si_stack;
4019 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4021 PL_stack_base = AvARRAY(PL_curstack);
4022 PL_stack_sp = PL_stack_base;
4023 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4025 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4028 PL_tmps_max = REASONABLE(128);
4030 Newx(PL_markstack,REASONABLE(32),I32);
4031 PL_markstack_ptr = PL_markstack;
4032 PL_markstack_max = PL_markstack + REASONABLE(32);
4036 Newx(PL_scopestack,REASONABLE(32),I32);
4038 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4040 PL_scopestack_ix = 0;
4041 PL_scopestack_max = REASONABLE(32);
4043 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4044 PL_savestack_ix = 0;
4045 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4053 while (PL_curstackinfo->si_next)
4054 PL_curstackinfo = PL_curstackinfo->si_next;
4055 while (PL_curstackinfo) {
4056 PERL_SI *p = PL_curstackinfo->si_prev;
4057 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4058 Safefree(PL_curstackinfo->si_cxstack);
4059 Safefree(PL_curstackinfo);
4060 PL_curstackinfo = p;
4062 Safefree(PL_tmps_stack);
4063 Safefree(PL_markstack);
4064 Safefree(PL_scopestack);
4066 Safefree(PL_scopestack_name);
4068 Safefree(PL_savestack);
4072 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4074 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4075 AV *const isa = GvAVn(gv);
4078 PERL_ARGS_ASSERT_POPULATE_ISA;
4080 if(AvFILLp(isa) != -1)
4083 /* NOTE: No support for tied ISA */
4085 va_start(args, len);
4087 const char *const parent = va_arg(args, const char*);
4092 parent_len = va_arg(args, size_t);
4094 /* Arguments are supplied with a trailing :: */
4095 assert(parent_len > 2);
4096 assert(parent[parent_len - 1] == ':');
4097 assert(parent[parent_len - 2] == ':');
4098 av_push(isa, newSVpvn(parent, parent_len - 2));
4099 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4106 S_init_predump_symbols(pTHX)
4111 sv_setpvs(get_sv("\"", GV_ADD), " ");
4112 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4115 /* Historically, PVIOs were blessed into IO::Handle, unless
4116 FileHandle was loaded, in which case they were blessed into
4117 that. Action at a distance.
4118 However, if we simply bless into IO::Handle, we break code
4119 that assumes that PVIOs will have (among others) a seek
4120 method. IO::File inherits from IO::Handle and IO::Seekable,
4121 and provides the needed methods. But if we simply bless into
4122 it, then we break code that assumed that by loading
4123 IO::Handle, *it* would work.
4124 So a compromise is to set up the correct @IO::File::ISA,
4125 so that code that does C<use IO::Handle>; will still work.
4128 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4129 STR_WITH_LEN("IO::Handle::"),
4130 STR_WITH_LEN("IO::Seekable::"),
4131 STR_WITH_LEN("Exporter::"),
4134 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4135 GvMULTI_on(PL_stdingv);
4136 io = GvIOp(PL_stdingv);
4137 IoTYPE(io) = IoTYPE_RDONLY;
4138 IoIFP(io) = PerlIO_stdin();
4139 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4141 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4143 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4146 IoTYPE(io) = IoTYPE_WRONLY;
4147 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4149 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4151 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4153 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4154 GvMULTI_on(PL_stderrgv);
4155 io = GvIOp(PL_stderrgv);
4156 IoTYPE(io) = IoTYPE_WRONLY;
4157 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4158 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4160 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4162 PL_statname = newSVpvs(""); /* last filename we did stat on */
4166 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4168 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4170 argc--,argv++; /* skip name of script */
4171 if (PL_doswitches) {
4172 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4176 if (argv[0][1] == '-' && !argv[0][2]) {
4180 if ((s = strchr(argv[0], '='))) {
4181 const char *const start_name = argv[0] + 1;
4182 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4183 TRUE, SVt_PV)), s + 1);
4186 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4189 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4190 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4191 GvMULTI_on(PL_argvgv);
4192 av_clear(GvAVn(PL_argvgv));
4193 for (; argc > 0; argc--,argv++) {
4194 SV * const sv = newSVpv(argv[0],0);
4195 av_push(GvAV(PL_argvgv),sv);
4196 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4197 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4200 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4201 (void)sv_utf8_decode(sv);
4205 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4206 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4207 "-i used with no filenames on the command line, "
4208 "reading from STDIN");
4212 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4219 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4221 PL_toptarget = newSV_type(SVt_PVIV);
4222 sv_setpvs(PL_toptarget, "");
4223 PL_bodytarget = newSV_type(SVt_PVIV);
4224 sv_setpvs(PL_bodytarget, "");
4225 PL_formtarget = PL_bodytarget;
4229 init_argv_symbols(argc,argv);
4231 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4232 sv_setpv(GvSV(tmpgv),PL_origfilename);
4234 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4236 bool env_is_not_environ;
4237 SvREFCNT_inc_simple_void_NN(PL_envgv);
4238 GvMULTI_on(PL_envgv);
4239 hv = GvHVn(PL_envgv);
4240 hv_magic(hv, NULL, PERL_MAGIC_env);
4242 #ifdef USE_ENVIRON_ARRAY
4243 /* Note that if the supplied env parameter is actually a copy
4244 of the global environ then it may now point to free'd memory
4245 if the environment has been modified since. To avoid this
4246 problem we treat env==NULL as meaning 'use the default'
4250 env_is_not_environ = env != environ;
4251 if (env_is_not_environ
4252 # ifdef USE_ITHREADS
4253 && PL_curinterp == aTHX
4262 for (; *env; env++) {
4265 if (!(s = strchr(old_var,'=')) || s == old_var)
4268 #if defined(MSDOS) && !defined(DJGPP)
4270 (void)strupr(old_var);
4273 sv = newSVpv(s+1, 0);
4274 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4275 if (env_is_not_environ)
4279 #endif /* USE_ENVIRON_ARRAY */
4280 #endif /* !PERL_MICRO */
4284 /* touch @F array to prevent spurious warnings 20020415 MJD */
4286 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4291 S_init_perllib(pTHX)
4294 const char *perl5lib = NULL;
4297 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4301 if (!TAINTING_get) {
4303 perl5lib = PerlEnv_getenv("PERL5LIB");
4305 * It isn't possible to delete an environment variable with
4306 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4307 * case we treat PERL5LIB as undefined if it has a zero-length value.
4309 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4310 if (perl5lib && *perl5lib != '\0')
4314 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4316 s = PerlEnv_getenv("PERLLIB");
4318 incpush_use_sep(s, 0, 0);
4321 /* Treat PERL5?LIB as a possible search list logical name -- the
4322 * "natural" VMS idiom for a Unix path string. We allow each
4323 * element to be a set of |-separated directories for compatibility.
4327 if (my_trnlnm("PERL5LIB",buf,0))
4329 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4330 } while (my_trnlnm("PERL5LIB",buf,++idx));
4332 while (my_trnlnm("PERLLIB",buf,idx++))
4333 incpush_use_sep(buf, 0, 0);
4338 #ifndef PERL_IS_MINIPERL
4339 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4340 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4342 /* Use the ~-expanded versions of APPLLIB (undocumented),
4343 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4346 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4347 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4351 /* sitearch is always relative to sitelib on Windows for
4352 * DLL-based path intuition to work correctly */
4353 # if !defined(WIN32)
4354 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4355 INCPUSH_CAN_RELOCATE);
4361 /* this picks up sitearch as well */
4362 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4364 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4366 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4370 #ifdef PERL_VENDORARCH_EXP
4371 /* vendorarch is always relative to vendorlib on Windows for
4372 * DLL-based path intuition to work correctly */
4373 # if !defined(WIN32)
4374 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4375 INCPUSH_CAN_RELOCATE);
4379 #ifdef PERL_VENDORLIB_EXP
4381 /* this picks up vendorarch as well */
4382 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4384 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4386 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4387 INCPUSH_CAN_RELOCATE);
4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4396 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4400 s = win32_get_privlib(PERL_FS_VERSION, &len);
4402 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4405 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4407 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4411 #ifdef PERL_OTHERLIBDIRS
4412 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4413 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4414 |INCPUSH_CAN_RELOCATE);
4417 if (!TAINTING_get) {
4420 * It isn't possible to delete an environment variable with
4421 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4422 * case we treat PERL5LIB as undefined if it has a zero-length value.
4424 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4425 if (perl5lib && *perl5lib != '\0')
4429 incpush_use_sep(perl5lib, 0,
4430 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4432 /* Treat PERL5?LIB as a possible search list logical name -- the
4433 * "natural" VMS idiom for a Unix path string. We allow each
4434 * element to be a set of |-separated directories for compatibility.
4438 if (my_trnlnm("PERL5LIB",buf,0))
4440 incpush_use_sep(buf, 0,
4441 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4442 } while (my_trnlnm("PERL5LIB",buf,++idx));
4446 /* Use the ~-expanded versions of APPLLIB (undocumented),
4447 SITELIB and VENDORLIB for older versions
4450 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4451 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4454 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4455 /* Search for version-specific dirs below here */
4456 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4457 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4461 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4462 /* Search for version-specific dirs below here */
4463 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4464 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4467 #ifdef PERL_OTHERLIBDIRS
4468 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4469 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4470 |INCPUSH_CAN_RELOCATE);
4472 #endif /* !PERL_IS_MINIPERL */
4475 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4478 #if defined(DOSISH) || defined(__SYMBIAN32__)
4479 # define PERLLIB_SEP ';'
4482 # define PERLLIB_SEP '|'
4484 # define PERLLIB_SEP ':'
4487 #ifndef PERLLIB_MANGLE
4488 # define PERLLIB_MANGLE(s,n) (s)
4491 #ifndef PERL_IS_MINIPERL
4492 /* Push a directory onto @INC if it exists.
4493 Generate a new SV if we do this, to save needing to copy the SV we push
4496 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4500 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4502 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4503 S_ISDIR(tmpstatbuf.st_mode)) {
4505 dir = newSVsv(stem);
4507 /* Truncate dir back to stem. */
4508 SvCUR_set(dir, SvCUR(stem));
4515 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4517 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4520 PERL_ARGS_ASSERT_MAYBERELOCATE;
4523 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4524 defined to so something (in os2/os2.c), but the code has been
4525 this way, ignoring any possible changed of length, since
4526 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4528 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4534 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4536 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4537 sv_usepvn(libdir,unix,len);
4540 PerlIO_printf(Perl_error_log,
4541 "Failed to unixify @INC element \"%s\"\n",
4542 SvPV_nolen_const(libdir));
4546 /* Do the if() outside the #ifdef to avoid warnings about an unused
4549 #ifdef PERL_RELOCATABLE_INC
4551 * Relocatable include entries are marked with a leading .../
4554 * 0: Remove that leading ".../"
4555 * 1: Remove trailing executable name (anything after the last '/')
4556 * from the perl path to give a perl prefix
4558 * While the @INC element starts "../" and the prefix ends with a real
4559 * directory (ie not . or ..) chop that real directory off the prefix
4560 * and the leading "../" from the @INC element. ie a logical "../"
4562 * Finally concatenate the prefix and the remainder of the @INC element
4563 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4564 * generates /usr/local/lib/perl5
4566 const char *libpath = SvPVX(libdir);
4567 STRLEN libpath_len = SvCUR(libdir);
4568 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4570 SV * const caret_X = get_sv("\030", 0);
4571 /* Going to use the SV just as a scratch buffer holding a C
4577 /* $^X is *the* source of taint if tainting is on, hence
4578 SvPOK() won't be true. */
4580 assert(SvPOKp(caret_X));
4581 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4583 /* Firstly take off the leading .../
4584 If all else fail we'll do the paths relative to the current
4586 sv_chop(libdir, libpath + 4);
4587 /* Don't use SvPV as we're intentionally bypassing taining,
4588 mortal copies that the mg_get of tainting creates, and
4589 corruption that seems to come via the save stack.
4590 I guess that the save stack isn't correctly set up yet. */
4591 libpath = SvPVX(libdir);
4592 libpath_len = SvCUR(libdir);
4594 /* This would work more efficiently with memrchr, but as it's
4595 only a GNU extension we'd need to probe for it and
4596 implement our own. Not hard, but maybe not worth it? */
4598 prefix = SvPVX(prefix_sv);
4599 lastslash = strrchr(prefix, '/');
4601 /* First time in with the *lastslash = '\0' we just wipe off
4602 the trailing /perl from (say) /usr/foo/bin/perl
4606 while ((*lastslash = '\0'), /* Do that, come what may. */
4607 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4608 && (lastslash = strrchr(prefix, '/')))) {
4609 if (lastslash[1] == '\0'
4610 || (lastslash[1] == '.'
4611 && (lastslash[2] == '/' /* ends "/." */
4612 || (lastslash[2] == '/'
4613 && lastslash[3] == '/' /* or "/.." */
4615 /* Prefix ends "/" or "/." or "/..", any of which
4616 are fishy, so don't do any more logical cleanup.
4620 /* Remove leading "../" from path */
4623 /* Next iteration round the loop removes the last
4624 directory name from prefix by writing a '\0' in
4625 the while clause. */
4627 /* prefix has been terminated with a '\0' to the correct
4628 length. libpath points somewhere into the libdir SV.
4629 We need to join the 2 with '/' and drop the result into
4631 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4632 SvREFCNT_dec(libdir);
4633 /* And this is the new libdir. */
4636 (PerlProc_getuid() != PerlProc_geteuid() ||
4637 PerlProc_getgid() != PerlProc_getegid())) {
4638 /* Need to taint relocated paths if running set ID */
4639 SvTAINTED_on(libdir);
4642 SvREFCNT_dec(prefix_sv);
4650 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4652 #ifndef PERL_IS_MINIPERL
4653 const U8 using_sub_dirs
4654 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4655 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4656 const U8 add_versioned_sub_dirs
4657 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4658 const U8 add_archonly_sub_dirs
4659 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4660 #ifdef PERL_INC_VERSION_LIST
4661 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4664 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4665 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4666 AV *const inc = GvAVn(PL_incgv);
4668 PERL_ARGS_ASSERT_INCPUSH;
4671 /* Could remove this vestigial extra block, if we don't mind a lot of
4672 re-indenting diff noise. */
4674 SV *const libdir = mayberelocate(dir, len, flags);
4675 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4676 arranged to unshift #! line -I onto the front of @INC. However,
4677 -I can add version and architecture specific libraries, and they
4678 need to go first. The old code assumed that it was always
4679 pushing. Hence to make it work, need to push the architecture
4680 (etc) libraries onto a temporary array, then "unshift" that onto
4681 the front of @INC. */
4682 #ifndef PERL_IS_MINIPERL
4683 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4686 * BEFORE pushing libdir onto @INC we may first push version- and
4687 * archname-specific sub-directories.
4689 if (using_sub_dirs) {
4690 SV *subdir = newSVsv(libdir);
4691 #ifdef PERL_INC_VERSION_LIST
4692 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4693 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4694 const char * const *incver;
4697 if (add_versioned_sub_dirs) {
4698 /* .../version/archname if -d .../version/archname */
4699 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4700 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4702 /* .../version if -d .../version */
4703 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4704 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4707 #ifdef PERL_INC_VERSION_LIST
4709 for (incver = incverlist; *incver; incver++) {
4710 /* .../xxx if -d .../xxx */
4711 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4712 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4717 if (add_archonly_sub_dirs) {
4718 /* .../archname if -d .../archname */
4719 sv_catpvs(subdir, "/" ARCHNAME);
4720 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4724 assert (SvREFCNT(subdir) == 1);
4725 SvREFCNT_dec(subdir);
4727 #endif /* !PERL_IS_MINIPERL */
4728 /* finally add this lib directory at the end of @INC */
4730 #ifdef PERL_IS_MINIPERL
4731 const Size_t extra = 0;
4733 Size_t extra = av_tindex(av) + 1;
4735 av_unshift(inc, extra + push_basedir);
4737 av_store(inc, extra, libdir);
4738 #ifndef PERL_IS_MINIPERL
4740 /* av owns a reference, av_store() expects to be donated a
4741 reference, and av expects to be sane when it's cleared.
4742 If I wanted to be naughty and wrong, I could peek inside the
4743 implementation of av_clear(), realise that it uses
4744 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4745 and so directly steal from it (with a memcpy() to inc, and
4746 then memset() to NULL them out. But people copy code from the
4747 core expecting it to be best practise, so let's use the API.
4748 Although studious readers will note that I'm not checking any
4750 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4755 else if (push_basedir) {
4756 av_push(inc, libdir);
4759 if (!push_basedir) {
4760 assert (SvREFCNT(libdir) == 1);
4761 SvREFCNT_dec(libdir);
4767 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4771 /* This logic has been broken out from S_incpush(). It may be possible to
4774 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4776 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4777 * argument to incpush_use_sep. This allows creation of relocatable
4778 * Perl distributions that patch the binary at install time. Those
4779 * distributions will have to provide their own relocation tools; this
4780 * is not a feature otherwise supported by core Perl.
4782 #ifndef PERL_RELOCATABLE_INCPUSH
4789 /* Break at all separators */
4790 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4792 /* skip any consecutive separators */
4794 /* Uncomment the next line for PATH semantics */
4795 /* But you'll need to write tests */
4796 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4798 incpush(p, (STRLEN)(s - p), flags);
4803 incpush(p, (STRLEN)(end - p), flags);
4808 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4811 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4817 PERL_ARGS_ASSERT_CALL_LIST;
4819 while (av_tindex(paramList) >= 0) {
4820 cv = MUTABLE_CV(av_shift(paramList));
4822 if (paramList == PL_beginav) {
4823 /* save PL_beginav for compiler */
4824 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4826 else if (paramList == PL_checkav) {
4827 /* save PL_checkav for compiler */
4828 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4830 else if (paramList == PL_unitcheckav) {
4831 /* save PL_unitcheckav for compiler */
4832 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4842 (void)SvPV_const(atsv, len);
4844 PL_curcop = &PL_compiling;
4845 CopLINE_set(PL_curcop, oldline);
4846 if (paramList == PL_beginav)
4847 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4849 Perl_sv_catpvf(aTHX_ atsv,
4850 "%s failed--call queue aborted",
4851 paramList == PL_checkav ? "CHECK"
4852 : paramList == PL_initav ? "INIT"
4853 : paramList == PL_unitcheckav ? "UNITCHECK"
4855 while (PL_scopestack_ix > oldscope)
4858 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4865 /* my_exit() was called */
4866 while (PL_scopestack_ix > oldscope)
4869 SET_CURSTASH(PL_defstash);
4870 PL_curcop = &PL_compiling;
4871 CopLINE_set(PL_curcop, oldline);
4874 assert(0); /* NOTREACHED */
4877 PL_curcop = &PL_compiling;
4878 CopLINE_set(PL_curcop, oldline);
4881 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4890 Perl_my_exit(pTHX_ U32 status)
4892 if (PL_exit_flags & PERL_EXIT_ABORT) {
4895 if (PL_exit_flags & PERL_EXIT_WARN) {
4896 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4897 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4898 PL_exit_flags &= ~PERL_EXIT_ABORT;
4908 STATUS_EXIT_SET(status);
4915 Perl_my_failure_exit(pTHX)
4918 /* We have been called to fall on our sword. The desired exit code
4919 * should be already set in STATUS_UNIX, but could be shifted over
4920 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4923 * If an error code has not been set, then force the issue.
4925 if (MY_POSIX_EXIT) {
4927 /* According to the die_exit.t tests, if errno is non-zero */
4928 /* It should be used for the error status. */
4930 if (errno == EVMSERR) {
4931 STATUS_NATIVE = vaxc$errno;
4934 /* According to die_exit.t tests, if the child_exit code is */
4935 /* also zero, then we need to exit with a code of 255 */
4936 if ((errno != 0) && (errno < 256))
4937 STATUS_UNIX_EXIT_SET(errno);
4938 else if (STATUS_UNIX < 255) {
4939 STATUS_UNIX_EXIT_SET(255);
4944 /* The exit code could have been set by $? or vmsish which
4945 * means that it may not have fatal set. So convert
4946 * success/warning codes to fatal with out changing
4947 * the POSIX status code. The severity makes VMS native
4948 * status handling work, while UNIX mode programs use the
4949 * the POSIX exit codes.
4951 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4952 STATUS_NATIVE &= STS$M_COND_ID;
4953 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4957 /* Traditionally Perl on VMS always expects a Fatal Error. */
4958 if (vaxc$errno & 1) {
4960 /* So force success status to failure */
4961 if (STATUS_NATIVE & 1)
4966 STATUS_UNIX = EINTR; /* In case something cares */
4971 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4973 /* Encode the severity code */
4974 severity = STATUS_NATIVE & STS$M_SEVERITY;
4975 STATUS_UNIX = (severity ? severity : 1) << 8;
4977 /* Perl expects this to be a fatal error */
4978 if (severity != STS$K_SEVERE)
4987 STATUS_UNIX_SET(errno);
4989 exitstatus = STATUS_UNIX >> 8;
4990 if (exitstatus & 255)
4991 STATUS_UNIX_SET(exitstatus);
4993 STATUS_UNIX_SET(255);
4996 if (PL_exit_flags & PERL_EXIT_ABORT) {
4999 if (PL_exit_flags & PERL_EXIT_WARN) {
5000 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5001 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5002 PL_exit_flags &= ~PERL_EXIT_ABORT;
5008 S_my_exit_jump(pTHX)
5011 SvREFCNT_dec(PL_e_script);
5015 POPSTACK_TO(PL_mainstack);
5023 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5025 const char * const p = SvPVX_const(PL_e_script);
5026 const char *nl = strchr(p, '\n');
5028 PERL_UNUSED_ARG(idx);
5029 PERL_UNUSED_ARG(maxlen);
5031 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5033 filter_del(read_e_script);
5036 sv_catpvn(buf_sv, p, nl-p);
5037 sv_chop(PL_e_script, nl);
5041 /* removes boilerplate code at the end of each boot_Module xsub */
5043 Perl_xs_boot_epilog(pTHX_ const U32 ax)
5046 call_list(PL_scopestack_ix, PL_unitcheckav);
5052 * c-indentation-style: bsd
5054 * indent-tabs-mode: nil
5057 * ex: set ts=8 sts=4 sw=4 et: