4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
36 #include "charclass_invlists.h"
42 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
49 char control[CMSG_SPACE(sizeof(int))];
62 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
63 char *getenv (char *); /* Usually in <stdlib.h> */
66 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
68 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
69 # define validate_suid(rsfp) NOOP
71 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
74 #define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
80 #define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
85 S_init_tls_and_interp(PerlInterpreter *my_perl)
89 PERL_SET_INTERP(my_perl);
90 #if defined(USE_ITHREADS)
93 PERL_SET_THX(my_perl);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
226 PL_perl_destruct_level = 1;
228 PERL_UNUSED_ARG(my_perl);
229 if (PL_perl_destruct_level > 0)
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
234 #ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
240 SvREADONLY_on(&PL_sv_placeholder);
241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
244 #ifdef PERL_USES_PL_PIDSTATUS
245 PL_pidstatus = newHV();
248 PL_rs = newSVpvs("\n");
259 #if defined(LOCAL_PATCH_COUNT)
260 PL_localpatches = local_patches; /* For possible -v */
263 #ifdef HAVE_INTERP_INTERN
267 PerlIO_init(aTHX); /* Hook to IO system */
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
271 PL_errors = newSVpvs("");
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
279 PL_regex_pad = AvARRAY(PL_regex_padav);
280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
282 #ifdef USE_REENTRANT_API
283 Perl_reentrant_init(aTHX);
285 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
297 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
310 _dyld_lookup_and_bind
311 ("__environ", (unsigned long *) &environ_pointer, NULL);
315 # ifdef USE_ENVIRON_ARRAY
316 PL_origenviron = environ;
320 /* Use sysconf(_SC_CLK_TCK) if available, if not
321 * available or if the sysconf() fails, use the HZ.
322 * The HZ if not originally defined has been by now
323 * been defined as CLK_TCK, if available. */
324 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
325 PL_clocktick = sysconf(_SC_CLK_TCK);
326 if (PL_clocktick <= 0)
330 PL_stashcache = newHV();
332 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
333 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
336 if (!PL_mmap_page_size) {
337 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
339 SETERRNO(0, SS_NORMAL);
341 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
343 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
345 if ((long) PL_mmap_page_size < 0) {
347 SV * const error = ERRSV;
348 SvUPGRADE(error, SVt_PV);
349 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
352 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
356 # ifdef HAS_GETPAGESIZE
357 PL_mmap_page_size = getpagesize();
359 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
360 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
364 if (PL_mmap_page_size <= 0)
365 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
366 (IV) PL_mmap_page_size);
368 #endif /* HAS_MMAP */
370 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
371 PL_timesbase.tms_utime = 0;
372 PL_timesbase.tms_stime = 0;
373 PL_timesbase.tms_cutime = 0;
374 PL_timesbase.tms_cstime = 0;
377 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
379 PL_registered_mros = newHV();
380 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
381 HvMAX(PL_registered_mros) = 0;
383 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
384 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
385 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
386 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
387 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
388 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
389 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
390 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
391 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
392 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
393 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
394 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
395 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
396 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
397 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
398 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
399 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
405 =for apidoc nothreadhook
407 Stub that provides thread hook for perl_destruct when there are
414 Perl_nothreadhook(pTHX)
420 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
422 Perl_dump_sv_child(pTHX_ SV *sv)
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
427 union control_un control;
430 struct cmsghdr *cmptr;
432 unsigned char buffer[256];
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
436 if(sock == -1 || debug_fd == -1)
439 PerlIO_flush(Perl_debug_log);
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
445 be open, the wait would be forever.) */
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
466 perror("Debug leaking scalars parent sendmsg failed");
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
474 /* Return protocol is
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
484 got = readv(sock, vec, 2);
487 perror("Debug leaking scalars parent read failed");
488 PerlIO_flush(PerlIO_stderr());
491 if(got < sizeof(returned_errno) + 1) {
492 perror("Debug leaking scalars parent short read");
493 PerlIO_flush(PerlIO_stderr());
498 got = read(sock, buffer + 1, *buffer);
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, Strerror(returned_errno));
521 =for apidoc perl_destruct
523 Shuts down a Perl interpreter. See L<perlembed>.
532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
534 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
539 PERL_ARGS_ASSERT_PERL_DESTRUCT;
541 PERL_UNUSED_ARG(my_perl);
544 assert(PL_scopestack_ix == 1);
546 /* wait for all pseudo-forked children to finish */
547 PERL_WAIT_FOR_CHILDREN;
549 destruct_level = PL_perl_destruct_level;
550 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
552 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
554 const int i = atoi(s);
556 if (destruct_level < i) destruct_level = i;
558 #ifdef PERL_TRACK_MEMPOOL
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
572 if (PL_endav && !PL_minus_c) {
573 PERL_SET_PHASE(PERL_PHASE_END);
574 call_list(PL_scopestack_ix, PL_endav);
580 assert(PL_scopestack_ix == 0);
582 /* Need to flush since END blocks can produce output */
585 #ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
599 if (PL_threadhook(aTHX)) {
600 /* Threads hook has vetoed further cleanup */
601 PL_veto_cleanup = TRUE;
605 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
621 perror("Debug leaking scalars fork failed");
625 /* We are the child */
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
630 /* Our success message is an integer 0, and a char 0 */
631 static const char success[sizeof(int) + 1] = {0};
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
647 f = sysconf(_SC_OPEN_MAX);
649 where = "sysconf failed";
660 union control_un control;
663 struct cmsghdr *cmptr;
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
673 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
675 vec[0].iov_base = (void*)⌖
676 vec[0].iov_len = sizeof(target);
678 got = recvmsg(sock, &msg, 0);
683 where = "recv failed";
686 if(got < sizeof(target)) {
687 where = "short recv";
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
720 PerlIO_flush(Perl_debug_log);
722 got = write(sock, &success, sizeof(success));
725 where = "write failed";
728 if(got < sizeof(success)) {
729 where = "short write";
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
741 {(void*)where, length}
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
750 _exit((got == -1) ? errno : 0);
754 PL_dumper_fd = fd[0];
759 /* We must account for everything. */
761 /* Destroy the main CV and syntax tree */
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
766 PL_curcop = &PL_compiling;
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
773 op_free(PL_main_root);
776 PL_main_start = NULL;
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
781 SvREFCNT_dec(PL_main_cv);
783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
790 PerlIO_destruct(aTHX);
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
799 /* unhook hooks which will soon be, or use, destroyed data */
800 SvREFCNT_dec(PL_warnhook);
802 SvREFCNT_dec(PL_diehook);
805 /* call exit list functions */
806 while (PL_exitlistlen-- > 0)
807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
809 Safefree(PL_exitlist);
814 SvREFCNT_dec(PL_registered_mros);
816 /* jettison our possibly duplicated environment */
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
821 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
822 if (environ != PL_origenviron && !PL_use_safe_putenv
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
831 for (i = 0; environ[i]; i++)
832 safesysfree(environ[i]);
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
837 environ = PL_origenviron;
840 #endif /* !PERL_MICRO */
842 if (destruct_level == 0) {
844 DEBUG_P(debprofdump());
846 #if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
851 CopFILE_free(&PL_compiling);
853 /* The exit() function will do everything that needs doing. */
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
878 PL_stashcache = NULL;
880 /* loosen bonds of global variables */
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
889 Safefree(PL_splitstr);
899 PL_doswitches = FALSE;
900 PL_dowarn = G_WARN_OFF;
901 #ifdef PERL_SAWAMPERSAND
902 PL_sawampersand = 0; /* must save all match strings */
906 Safefree(PL_inplace);
908 SvREFCNT_dec(PL_patchlevel);
909 SvREFCNT_dec(PL_apiversion);
912 SvREFCNT_dec(PL_e_script);
918 /* magical thingies */
920 SvREFCNT_dec(PL_ofsgv); /* *, */
923 SvREFCNT_dec(PL_ors_sv); /* $\ */
926 SvREFCNT_dec(PL_rs); /* $/ */
929 Safefree(PL_osname); /* $^O */
932 SvREFCNT_dec(PL_statname);
936 /* defgv, aka *_ should be taken care of elsewhere */
939 Safefree(PL_efloatbuf);
943 /* startup and shutdown function lists */
944 SvREFCNT_dec(PL_beginav);
945 SvREFCNT_dec(PL_beginav_save);
946 SvREFCNT_dec(PL_endav);
947 SvREFCNT_dec(PL_checkav);
948 SvREFCNT_dec(PL_checkav_save);
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
951 SvREFCNT_dec(PL_initav);
953 PL_beginav_save = NULL;
956 PL_checkav_save = NULL;
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
961 /* shortcuts just get cleared */
967 PL_last_in_gv = NULL;
975 SvREFCNT_dec(PL_envgv);
976 SvREFCNT_dec(PL_incgv);
977 SvREFCNT_dec(PL_argvgv);
978 SvREFCNT_dec(PL_replgv);
979 SvREFCNT_dec(PL_DBgv);
980 SvREFCNT_dec(PL_DBline);
981 SvREFCNT_dec(PL_DBsub);
990 SvREFCNT_dec(PL_argvout_stack);
991 PL_argvout_stack = NULL;
993 SvREFCNT_dec(PL_modglobal);
995 SvREFCNT_dec(PL_preambleav);
996 PL_preambleav = NULL;
997 SvREFCNT_dec(PL_subname);
999 #ifdef PERL_USES_PL_PIDSTATUS
1000 SvREFCNT_dec(PL_pidstatus);
1001 PL_pidstatus = NULL;
1003 SvREFCNT_dec(PL_toptarget);
1004 PL_toptarget = NULL;
1005 SvREFCNT_dec(PL_bodytarget);
1006 PL_bodytarget = NULL;
1007 PL_formtarget = NULL;
1009 /* free locale stuff */
1010 #ifdef USE_LOCALE_COLLATE
1011 Safefree(PL_collation_name);
1012 PL_collation_name = NULL;
1015 #ifdef USE_LOCALE_NUMERIC
1016 Safefree(PL_numeric_name);
1017 PL_numeric_name = NULL;
1018 SvREFCNT_dec(PL_numeric_radix_sv);
1019 PL_numeric_radix_sv = NULL;
1022 /* clear character classes */
1023 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1024 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1025 PL_utf8_swash_ptrs[i] = NULL;
1027 SvREFCNT_dec(PL_utf8_mark);
1028 SvREFCNT_dec(PL_utf8_toupper);
1029 SvREFCNT_dec(PL_utf8_totitle);
1030 SvREFCNT_dec(PL_utf8_tolower);
1031 SvREFCNT_dec(PL_utf8_tofold);
1032 SvREFCNT_dec(PL_utf8_idstart);
1033 SvREFCNT_dec(PL_utf8_idcont);
1034 SvREFCNT_dec(PL_utf8_foldable);
1035 SvREFCNT_dec(PL_utf8_foldclosures);
1036 SvREFCNT_dec(PL_AboveLatin1);
1037 SvREFCNT_dec(PL_UpperLatin1);
1038 SvREFCNT_dec(PL_Latin1);
1039 SvREFCNT_dec(PL_NonL1NonFinalFold);
1040 SvREFCNT_dec(PL_HasMultiCharFold);
1041 PL_utf8_mark = NULL;
1042 PL_utf8_toupper = NULL;
1043 PL_utf8_totitle = NULL;
1044 PL_utf8_tolower = NULL;
1045 PL_utf8_tofold = NULL;
1046 PL_utf8_idstart = NULL;
1047 PL_utf8_idcont = NULL;
1048 PL_utf8_foldclosures = NULL;
1049 PL_AboveLatin1 = NULL;
1050 PL_HasMultiCharFold = NULL;
1052 PL_NonL1NonFinalFold = NULL;
1053 PL_UpperLatin1 = NULL;
1054 for (i = 0; i < POSIX_CC_COUNT; i++) {
1055 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1056 PL_XPosix_ptrs[i] = NULL;
1059 if (!specialWARN(PL_compiling.cop_warnings))
1060 PerlMemShared_free(PL_compiling.cop_warnings);
1061 PL_compiling.cop_warnings = NULL;
1062 cophh_free(CopHINTHASH_get(&PL_compiling));
1063 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1064 CopFILE_free(&PL_compiling);
1066 /* Prepare to destruct main symbol table. */
1069 /* break ref loop *:: <=> %:: */
1070 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1073 SvREFCNT_dec(PL_curstname);
1074 PL_curstname = NULL;
1076 /* clear queued errors */
1077 SvREFCNT_dec(PL_errors);
1080 SvREFCNT_dec(PL_isarev);
1083 if (destruct_level >= 2) {
1084 if (PL_scopestack_ix != 0)
1085 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1087 (long)PL_scopestack_ix);
1088 if (PL_savestack_ix != 0)
1089 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1090 "Unbalanced saves: %ld more saves than restores\n",
1091 (long)PL_savestack_ix);
1092 if (PL_tmps_floor != -1)
1093 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1094 (long)PL_tmps_floor + 1);
1095 if (cxstack_ix != -1)
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1097 (long)cxstack_ix + 1);
1101 SvREFCNT_dec(PL_regex_padav);
1102 PL_regex_padav = NULL;
1103 PL_regex_pad = NULL;
1106 #ifdef PERL_IMPLICIT_CONTEXT
1107 /* the entries in this list are allocated via SV PVX's, so get freed
1108 * in sv_clean_all */
1109 Safefree(PL_my_cxt_list);
1112 /* Now absolutely destruct everything, somehow or other, loops or no. */
1114 /* the 2 is for PL_fdpid and PL_strtab */
1115 while (sv_clean_all() > 2)
1119 Safefree(PL_stashpad); /* must come after sv_clean_all */
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1126 #ifdef HAVE_INTERP_INTERN
1130 /* constant strings */
1131 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1132 SvREFCNT_dec(PL_sv_consts[i]);
1133 PL_sv_consts[i] = NULL;
1136 /* Destruct the global string table. */
1138 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1139 * so that sv_free() won't fail on them.
1140 * Now that the global string table is using a single hunk of memory
1141 * for both HE and HEK, we either need to explicitly unshare it the
1142 * correct way, or actually free things here.
1145 const I32 max = HvMAX(PL_strtab);
1146 HE * const * const array = HvARRAY(PL_strtab);
1147 HE *hent = array[0];
1150 if (hent && ckWARN_d(WARN_INTERNAL)) {
1151 HE * const next = HeNEXT(hent);
1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1153 "Unbalanced string table refcount: (%ld) for \"%s\"",
1154 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1161 hent = array[riter];
1166 HvARRAY(PL_strtab) = 0;
1167 HvTOTALKEYS(PL_strtab) = 0;
1169 SvREFCNT_dec(PL_strtab);
1172 /* free the pointer tables used for cloning */
1173 ptr_table_free(PL_ptr_table);
1174 PL_ptr_table = (PTR_TBL_t*)NULL;
1177 /* free special SVs */
1179 SvREFCNT(&PL_sv_yes) = 0;
1180 sv_clear(&PL_sv_yes);
1181 SvANY(&PL_sv_yes) = NULL;
1182 SvFLAGS(&PL_sv_yes) = 0;
1184 SvREFCNT(&PL_sv_no) = 0;
1185 sv_clear(&PL_sv_no);
1186 SvANY(&PL_sv_no) = NULL;
1187 SvFLAGS(&PL_sv_no) = 0;
1191 for (i=0; i<=2; i++) {
1192 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1193 sv_clear(PERL_DEBUG_PAD(i));
1194 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1195 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1199 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1200 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1202 #ifdef DEBUG_LEAKING_SCALARS
1203 if (PL_sv_count != 0) {
1208 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1209 svend = &sva[SvREFCNT(sva)];
1210 for (sv = sva + 1; sv < svend; ++sv) {
1211 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1212 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1214 " refcnt=%"UVuf pTHX__FORMAT "\n"
1215 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1217 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1219 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1221 sv->sv_debug_inpad ? "for" : "by",
1222 sv->sv_debug_optype ?
1223 PL_op_name[sv->sv_debug_optype]: "(none)",
1224 PTR2UV(sv->sv_debug_parent),
1227 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1228 Perl_dump_sv_child(aTHX_ sv);
1234 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1238 /* Wait for up to 4 seconds for child to terminate.
1239 This seems to be the least effort way of timing out on reaping
1241 struct timeval waitfor = {4, 0};
1242 int sock = PL_dumper_fd;
1246 FD_SET(sock, &rset);
1247 select(sock + 1, &rset, NULL, NULL, &waitfor);
1248 waitpid(child, &status, WNOHANG);
1253 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1259 #if defined(PERLIO_LAYERS)
1260 /* No more IO - including error messages ! */
1261 PerlIO_cleanup(aTHX);
1264 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1265 as currently layers use it rather than NULL as a marker
1266 for no arg - and will try and SvREFCNT_dec it.
1268 SvREFCNT(&PL_sv_undef) = 0;
1269 SvREADONLY_off(&PL_sv_undef);
1271 Safefree(PL_origfilename);
1272 PL_origfilename = NULL;
1273 Safefree(PL_reg_curpm);
1274 free_tied_hv_pool();
1275 Safefree(PL_op_mask);
1276 Safefree(PL_psig_name);
1277 PL_psig_name = (SV**)NULL;
1278 PL_psig_ptr = (SV**)NULL;
1280 /* We need to NULL PL_psig_pend first, so that
1281 signal handlers know not to use it */
1282 int *psig_save = PL_psig_pend;
1283 PL_psig_pend = (int*)NULL;
1284 Safefree(psig_save);
1287 TAINTING_set(FALSE);
1288 TAINT_WARN_set(FALSE);
1289 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1292 DEBUG_P(debprofdump());
1294 #ifdef USE_REENTRANT_API
1295 Perl_reentrant_free(aTHX);
1300 while (PL_regmatch_slab) {
1301 regmatch_slab *s = PL_regmatch_slab;
1302 PL_regmatch_slab = PL_regmatch_slab->next;
1306 /* As the absolutely last thing, free the non-arena SV for mess() */
1309 /* we know that type == SVt_PVMG */
1311 /* it could have accumulated taint magic */
1314 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1315 moremagic = mg->mg_moremagic;
1316 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1318 Safefree(mg->mg_ptr);
1322 /* we know that type >= SVt_PV */
1323 SvPV_free(PL_mess_sv);
1324 Safefree(SvANY(PL_mess_sv));
1325 Safefree(PL_mess_sv);
1332 =for apidoc perl_free
1334 Releases a Perl interpreter. See L<perlembed>.
1344 PERL_ARGS_ASSERT_PERL_FREE;
1346 if (PL_veto_cleanup)
1349 #ifdef PERL_TRACK_MEMPOOL
1352 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1353 * value as we're probably hunting memory leaks then
1355 if (PL_perl_destruct_level == 0) {
1356 const U32 old_debug = PL_debug;
1357 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1358 thread at thread exit. */
1360 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1361 "free this thread's memory\n");
1362 PL_debug &= ~ DEBUG_m_FLAG;
1364 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1365 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
1366 PL_debug = old_debug;
1371 #if defined(WIN32) || defined(NETWARE)
1372 # if defined(PERL_IMPLICIT_SYS)
1375 void *host = nw_internal_host;
1376 PerlMem_free(aTHXx);
1377 nw_delete_internal_host(host);
1379 void *host = w32_internal_host;
1380 PerlMem_free(aTHXx);
1381 win32_delete_internal_host(host);
1385 PerlMem_free(aTHXx);
1388 PerlMem_free(aTHXx);
1392 #if defined(USE_ITHREADS)
1393 /* provide destructors to clean up the thread key when libperl is unloaded */
1394 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1396 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1397 #pragma fini "perl_fini"
1398 #elif defined(__sun) && !defined(__GNUC__)
1399 #pragma fini (perl_fini)
1403 #if defined(__GNUC__)
1404 __attribute__((destructor))
1410 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1413 PL_curinterp && !PL_veto_cleanup)
1418 #endif /* THREADS */
1421 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1424 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1425 PL_exitlist[PL_exitlistlen].fn = fn;
1426 PL_exitlist[PL_exitlistlen].ptr = ptr;
1431 =for apidoc perl_parse
1433 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1438 #define SET_CURSTASH(newstash) \
1439 if (PL_curstash != newstash) { \
1440 SvREFCNT_dec(PL_curstash); \
1441 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1445 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1452 PERL_ARGS_ASSERT_PERL_PARSE;
1453 #ifndef MULTIPLICITY
1454 PERL_UNUSED_ARG(my_perl);
1456 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1458 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1460 if (s && (atoi(s) == 1)) {
1461 unsigned char *seed= PERL_HASH_SEED;
1462 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1463 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1464 while (seed < seed_end) {
1465 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1467 #ifdef PERL_HASH_RANDOMIZE_KEYS
1468 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1469 PL_HASH_RAND_BITS_ENABLED,
1470 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1472 PerlIO_printf(Perl_debug_log, "\n");
1475 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1479 if (PL_origalen != 0) {
1480 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1483 /* Set PL_origalen be the sum of the contiguous argv[]
1484 * elements plus the size of the env in case that it is
1485 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1486 * as the maximum modifiable length of $0. In the worst case
1487 * the area we are able to modify is limited to the size of
1488 * the original argv[0]. (See below for 'contiguous', though.)
1490 const char *s = NULL;
1493 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1494 /* Do the mask check only if the args seem like aligned. */
1496 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1498 /* See if all the arguments are contiguous in memory. Note
1499 * that 'contiguous' is a loose term because some platforms
1500 * align the argv[] and the envp[]. If the arguments look
1501 * like non-aligned, assume that they are 'strictly' or
1502 * 'traditionally' contiguous. If the arguments look like
1503 * aligned, we just check that they are within aligned
1504 * PTRSIZE bytes. As long as no system has something bizarre
1505 * like the argv[] interleaved with some other data, we are
1506 * fine. (Did I just evoke Murphy's Law?) --jhi */
1507 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1509 for (i = 1; i < PL_origargc; i++) {
1510 if ((PL_origargv[i] == s + 1
1512 || PL_origargv[i] == s + 2
1517 (PL_origargv[i] > s &&
1519 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1530 #ifndef PERL_USE_SAFE_PUTENV
1531 /* Can we grab env area too to be used as the area for $0? */
1532 if (s && PL_origenviron && !PL_use_safe_putenv) {
1533 if ((PL_origenviron[0] == s + 1)
1536 (PL_origenviron[0] > s &&
1537 PL_origenviron[0] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1542 s = PL_origenviron[0];
1545 my_setenv("NoNe SuCh", NULL);
1546 /* Force copy of environment. */
1547 for (i = 1; PL_origenviron[i]; i++) {
1548 if (PL_origenviron[i] == s + 1
1551 (PL_origenviron[i] > s &&
1552 PL_origenviron[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 s = PL_origenviron[i];
1564 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1566 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1571 /* Come here if running an undumped a.out. */
1573 PL_origfilename = savepv(argv[0]);
1574 PL_do_undump = FALSE;
1575 cxstack_ix = -1; /* start label stack again */
1577 assert (!TAINT_get);
1581 init_postdump_symbols(argc,argv,env);
1586 op_free(PL_main_root);
1587 PL_main_root = NULL;
1589 PL_main_start = NULL;
1590 SvREFCNT_dec(PL_main_cv);
1594 oldscope = PL_scopestack_ix;
1595 PL_dowarn = G_WARN_OFF;
1600 parse_body(env,xsinit);
1601 if (PL_unitcheckav) {
1602 call_list(oldscope, PL_unitcheckav);
1605 PERL_SET_PHASE(PERL_PHASE_CHECK);
1606 call_list(oldscope, PL_checkav);
1614 /* my_exit() was called */
1615 while (PL_scopestack_ix > oldscope)
1618 SET_CURSTASH(PL_defstash);
1619 if (PL_unitcheckav) {
1620 call_list(oldscope, PL_unitcheckav);
1623 PERL_SET_PHASE(PERL_PHASE_CHECK);
1624 call_list(oldscope, PL_checkav);
1629 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1637 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1638 miniperl, and we need to see those flags reflected in the values here. */
1640 /* What this returns is subject to change. Use the public interface in Config.
1643 S_Internals_V(pTHX_ CV *cv)
1646 #ifdef LOCAL_PATCH_COUNT
1647 const int local_patch_count = LOCAL_PATCH_COUNT;
1649 const int local_patch_count = 0;
1651 const int entries = 3 + local_patch_count;
1653 static const char non_bincompat_options[] =
1660 # ifdef NO_HASH_SEED
1663 # ifdef NO_TAINT_SUPPORT
1666 # ifdef PERL_DISABLE_PMC
1669 # ifdef PERL_DONT_CREATE_GVSV
1670 " PERL_DONT_CREATE_GVSV"
1672 # ifdef PERL_EXTERNAL_GLOB
1673 " PERL_EXTERNAL_GLOB"
1675 # ifdef PERL_HASH_FUNC_SIPHASH
1676 " PERL_HASH_FUNC_SIPHASH"
1678 # ifdef PERL_HASH_FUNC_SDBM
1679 " PERL_HASH_FUNC_SDBM"
1681 # ifdef PERL_HASH_FUNC_DJB2
1682 " PERL_HASH_FUNC_DJB2"
1684 # ifdef PERL_HASH_FUNC_SUPERFAST
1685 " PERL_HASH_FUNC_SUPERFAST"
1687 # ifdef PERL_HASH_FUNC_MURMUR3
1688 " PERL_HASH_FUNC_MURMUR3"
1690 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1691 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1693 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1694 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1696 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1699 # ifdef PERL_IS_MINIPERL
1702 # ifdef PERL_MALLOC_WRAP
1705 # ifdef PERL_MEM_LOG
1708 # ifdef PERL_MEM_LOG_NOIMPL
1709 " PERL_MEM_LOG_NOIMPL"
1711 # ifdef PERL_NEW_COPY_ON_WRITE
1712 " PERL_NEW_COPY_ON_WRITE"
1714 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1715 " PERL_PERTURB_KEYS_DETERMINISTIC"
1717 # ifdef PERL_PERTURB_KEYS_DISABLED
1718 " PERL_PERTURB_KEYS_DISABLED"
1720 # ifdef PERL_PERTURB_KEYS_RANDOM
1721 " PERL_PERTURB_KEYS_RANDOM"
1723 # ifdef PERL_PRESERVE_IVUV
1724 " PERL_PRESERVE_IVUV"
1726 # ifdef PERL_RELOCATABLE_INCPUSH
1727 " PERL_RELOCATABLE_INCPUSH"
1729 # ifdef PERL_USE_DEVEL
1732 # ifdef PERL_USE_SAFE_PUTENV
1733 " PERL_USE_SAFE_PUTENV"
1735 # ifdef UNLINK_ALL_VERSIONS
1736 " UNLINK_ALL_VERSIONS"
1738 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1739 " USE_ATTRIBUTES_FOR_PERLIO"
1741 # ifdef USE_FAST_STDIO
1744 # ifdef USE_HASH_SEED_EXPLICIT
1745 " USE_HASH_SEED_EXPLICIT"
1750 # ifdef USE_LOCALE_CTYPE
1753 # ifdef USE_PERL_ATOF
1756 # ifdef USE_SITECUSTOMIZE
1757 " USE_SITECUSTOMIZE"
1760 PERL_UNUSED_ARG(cv);
1761 PERL_UNUSED_ARG(items);
1763 EXTEND(SP, entries);
1765 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1766 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1767 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1771 PUSHs(Perl_newSVpvn_flags(aTHX_
1772 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1779 PUSHs(&PL_sv_undef);
1782 for (i = 1; i <= local_patch_count; i++) {
1783 /* This will be an undef, if PL_localpatches[i] is NULL. */
1784 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1790 #define INCPUSH_UNSHIFT 0x01
1791 #define INCPUSH_ADD_OLD_VERS 0x02
1792 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1793 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1794 #define INCPUSH_NOT_BASEDIR 0x10
1795 #define INCPUSH_CAN_RELOCATE 0x20
1796 #define INCPUSH_ADD_SUB_DIRS \
1797 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1800 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1804 int argc = PL_origargc;
1805 char **argv = PL_origargv;
1806 const char *scriptname = NULL;
1807 VOL bool dosearch = FALSE;
1809 bool doextract = FALSE;
1810 const char *cddir = NULL;
1811 #ifdef USE_SITECUSTOMIZE
1812 bool minus_f = FALSE;
1814 SV *linestr_sv = NULL;
1815 bool add_read_e_script = FALSE;
1816 U32 lex_start_flags = 0;
1818 PERL_SET_PHASE(PERL_PHASE_START);
1824 for (argc--,argv++; argc > 0; argc--,argv++) {
1825 if (argv[0][0] != '-' || !argv[0][1])
1831 #ifndef PERL_STRICT_CR
1855 if ((s = moreswitches(s)))
1860 #if defined(SILENT_NO_TAINT_SUPPORT)
1861 /* silently ignore */
1862 #elif defined(NO_TAINT_SUPPORT)
1863 Perl_croak_nocontext("This perl was compiled without taint support. "
1864 "Cowardly refusing to run with -t or -T flags");
1866 CHECK_MALLOC_TOO_LATE_FOR('t');
1867 if( !TAINTING_get ) {
1868 TAINT_WARN_set(TRUE);
1875 #if defined(SILENT_NO_TAINT_SUPPORT)
1876 /* silently ignore */
1877 #elif defined(NO_TAINT_SUPPORT)
1878 Perl_croak_nocontext("This perl was compiled without taint support. "
1879 "Cowardly refusing to run with -t or -T flags");
1881 CHECK_MALLOC_TOO_LATE_FOR('T');
1883 TAINT_WARN_set(FALSE);
1892 forbid_setid('e', FALSE);
1894 PL_e_script = newSVpvs("");
1895 add_read_e_script = TRUE;
1898 sv_catpv(PL_e_script, s);
1900 sv_catpv(PL_e_script, argv[1]);
1904 Perl_croak(aTHX_ "No code specified for -%c", c);
1905 sv_catpvs(PL_e_script, "\n");
1909 #ifdef USE_SITECUSTOMIZE
1915 case 'I': /* -I handled both here and in moreswitches() */
1916 forbid_setid('I', FALSE);
1917 if (!*++s && (s=argv[1]) != NULL) {
1921 STRLEN len = strlen(s);
1922 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1925 Perl_croak(aTHX_ "No directory specified for -I");
1928 forbid_setid('S', FALSE);
1937 opts_prog = newSVpvs("use Config; Config::_V()");
1941 opts_prog = Perl_newSVpvf(aTHX_
1942 "use Config; Config::config_vars(qw%c%s%c)",
1946 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1947 /* don't look for script or read stdin */
1948 scriptname = BIT_BUCKET;
1960 if (!*++s || isSPACE(*s)) {
1964 /* catch use of gnu style long options.
1965 Both of these exit immediately. */
1966 if (strEQ(s, "version"))
1968 if (strEQ(s, "help"))
1973 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1984 #ifndef SECURE_INTERNAL_GETENV
1987 (s = PerlEnv_getenv("PERL5OPT")))
1991 if (*s == '-' && *(s+1) == 'T') {
1992 #if defined(SILENT_NO_TAINT_SUPPORT)
1993 /* silently ignore */
1994 #elif defined(NO_TAINT_SUPPORT)
1995 Perl_croak_nocontext("This perl was compiled without taint support. "
1996 "Cowardly refusing to run with -t or -T flags");
1998 CHECK_MALLOC_TOO_LATE_FOR('T');
2000 TAINT_WARN_set(FALSE);
2004 char *popt_copy = NULL;
2017 if (!strchr("CDIMUdmtwW", *s))
2018 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2022 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2023 s = popt_copy + (s - d);
2031 #if defined(SILENT_NO_TAINT_SUPPORT)
2032 /* silently ignore */
2033 #elif defined(NO_TAINT_SUPPORT)
2034 Perl_croak_nocontext("This perl was compiled without taint support. "
2035 "Cowardly refusing to run with -t or -T flags");
2037 if( !TAINTING_get) {
2038 TAINT_WARN_set(TRUE);
2050 /* Set $^X early so that it can be used for relocatable paths in @INC */
2051 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2052 assert (!TAINT_get);
2057 #if defined(USE_SITECUSTOMIZE)
2059 /* The games with local $! are to avoid setting errno if there is no
2060 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2061 ie a q() operator with a NUL byte as a the delimiter. This avoids
2062 problems with pathnames containing (say) ' */
2063 # ifdef PERL_IS_MINIPERL
2064 AV *const inc = GvAV(PL_incgv);
2065 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2068 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2069 it should be reported immediately as a build failure. */
2070 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2072 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2077 /* SITELIB_EXP is a function call on Win32. */
2078 const char *const raw_sitelib = SITELIB_EXP;
2080 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2081 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2082 INCPUSH_CAN_RELOCATE);
2083 const char *const sitelib = SvPVX(sitelib_sv);
2084 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2086 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2089 assert (SvREFCNT(sitelib_sv) == 1);
2090 SvREFCNT_dec(sitelib_sv);
2097 scriptname = argv[0];
2100 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2102 else if (scriptname == NULL) {
2104 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2110 assert (!TAINT_get);
2114 bool suidscript = FALSE;
2116 rsfp = open_script(scriptname, dosearch, &suidscript);
2118 rsfp = PerlIO_stdin();
2119 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2122 validate_suid(rsfp);
2125 # if defined(SIGCHLD) || defined(SIGCLD)
2128 # define SIGCHLD SIGCLD
2130 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2131 if (sigstate == (Sighandler_t) SIG_IGN) {
2132 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2133 "Can't ignore signal CHLD, forcing to default");
2134 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2142 /* This will croak if suidscript is true, as -x cannot be used with
2144 forbid_setid('x', suidscript);
2145 /* Hence you can't get here if suidscript is true */
2147 linestr_sv = newSV_type(SVt_PV);
2148 lex_start_flags |= LEX_START_COPIED;
2149 find_beginning(linestr_sv, rsfp);
2150 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2151 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2155 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2156 CvUNIQUE_on(PL_compcv);
2158 CvPADLIST(PL_compcv) = pad_new(0);
2160 PL_isarev = newHV();
2163 boot_core_UNIVERSAL();
2165 newXS("Internals::V", S_Internals_V, __FILE__);
2168 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2170 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2176 # ifdef HAS_SOCKS5_INIT
2177 socks5_init(argv[0]);
2183 init_predump_symbols();
2184 /* init_postdump_symbols not currently designed to be called */
2185 /* more than once (ENV isn't cleared first, for example) */
2186 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2188 init_postdump_symbols(argc,argv,env);
2190 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2191 * or explicitly in some platforms.
2192 * locale.c:Perl_init_i18nl10n() if the environment
2193 * look like the user wants to use UTF-8. */
2194 #if defined(__SYMBIAN32__)
2195 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2197 # ifndef PERL_IS_MINIPERL
2199 /* Requires init_predump_symbols(). */
2200 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2205 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2206 * and the default open disciplines. */
2207 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2208 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2210 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2211 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2212 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2214 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2215 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2216 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2220 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2222 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2223 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2226 sv_setpvs(sv, ":utf8\0:utf8");
2228 sv_setpvs(sv, ":utf8\0");
2231 sv_setpvs(sv, "\0:utf8");
2240 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2241 if (strEQ(s, "unsafe"))
2242 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2243 else if (strEQ(s, "safe"))
2244 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2246 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2253 if (!TAINTING_get &&
2254 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2258 PL_xmlfp = PerlIO_stdout();
2260 PL_xmlfp = PerlIO_open(s, "w");
2262 Perl_croak(aTHX_ "Can't open %s", s);
2264 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2270 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2271 PL_madskills = atoi(s);
2272 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2277 lex_start(linestr_sv, rsfp, lex_start_flags);
2278 SvREFCNT_dec(linestr_sv);
2280 PL_subname = newSVpvs("main");
2282 if (add_read_e_script)
2283 filter_add(read_e_script, NULL);
2285 /* now parse the script */
2287 SETERRNO(0,SS_NORMAL);
2288 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2290 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2292 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2296 CopLINE_set(PL_curcop, 0);
2297 SET_CURSTASH(PL_defstash);
2299 SvREFCNT_dec(PL_e_script);
2307 SAVECOPFILE(PL_curcop);
2308 SAVECOPLINE(PL_curcop);
2309 gv_check(PL_defstash);
2318 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2319 dump_mstats("after compilation:");
2324 PL_restartjmpenv = NULL;
2330 =for apidoc perl_run
2332 Tells a Perl interpreter to run. See L<perlembed>.
2345 PERL_ARGS_ASSERT_PERL_RUN;
2346 #ifndef MULTIPLICITY
2347 PERL_UNUSED_ARG(my_perl);
2350 oldscope = PL_scopestack_ix;
2358 cxstack_ix = -1; /* start context stack again */
2360 case 0: /* normal completion */
2364 case 2: /* my_exit() */
2365 while (PL_scopestack_ix > oldscope)
2368 SET_CURSTASH(PL_defstash);
2369 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2370 PL_endav && !PL_minus_c) {
2371 PERL_SET_PHASE(PERL_PHASE_END);
2372 call_list(oldscope, PL_endav);
2375 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2376 dump_mstats("after execution: ");
2382 POPSTACK_TO(PL_mainstack);
2385 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2396 S_run_body(pTHX_ I32 oldscope)
2399 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2400 PL_sawampersand ? "Enabling" : "Omitting",
2401 (unsigned int)(PL_sawampersand)));
2403 if (!PL_restartop) {
2407 exit(0); /* less likely to core dump than my_exit(0) */
2411 if (DEBUG_x_TEST || DEBUG_B_TEST)
2412 dump_all_perl(!DEBUG_B_TEST);
2414 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2418 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2421 if (PERLDB_SINGLE && PL_DBsingle)
2422 sv_setiv(PL_DBsingle, 1);
2424 PERL_SET_PHASE(PERL_PHASE_INIT);
2425 call_list(oldscope, PL_initav);
2427 #ifdef PERL_DEBUG_READONLY_OPS
2428 if (PL_main_root && PL_main_root->op_slabbed)
2429 Slab_to_ro(OpSLAB(PL_main_root));
2435 PERL_SET_PHASE(PERL_PHASE_RUN);
2438 PL_restartjmpenv = NULL;
2439 PL_op = PL_restartop;
2443 else if (PL_main_start) {
2444 CvDEPTH(PL_main_cv) = 1;
2445 PL_op = PL_main_start;
2449 assert(0); /* NOTREACHED */
2453 =head1 SV Manipulation Functions
2455 =for apidoc p||get_sv
2457 Returns the SV of the specified Perl scalar. C<flags> are passed to
2458 C<gv_fetchpv>. If C<GV_ADD> is set and the
2459 Perl variable does not exist then it will be created. If C<flags> is zero
2460 and the variable does not exist then NULL is returned.
2466 Perl_get_sv(pTHX_ const char *name, I32 flags)
2470 PERL_ARGS_ASSERT_GET_SV;
2472 gv = gv_fetchpv(name, flags, SVt_PV);
2479 =head1 Array Manipulation Functions
2481 =for apidoc p||get_av
2483 Returns the AV of the specified Perl global or package array with the given
2484 name (so it won't work on lexical variables). C<flags> are passed
2485 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2486 Perl variable does not exist then it will be created. If C<flags> is zero
2487 and the variable does not exist then NULL is returned.
2489 Perl equivalent: C<@{"$name"}>.
2495 Perl_get_av(pTHX_ const char *name, I32 flags)
2497 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2499 PERL_ARGS_ASSERT_GET_AV;
2509 =head1 Hash Manipulation Functions
2511 =for apidoc p||get_hv
2513 Returns the HV of the specified Perl hash. C<flags> are passed to
2514 C<gv_fetchpv>. If C<GV_ADD> is set and the
2515 Perl variable does not exist then it will be created. If C<flags> is zero
2516 and the variable does not exist then NULL is returned.
2522 Perl_get_hv(pTHX_ const char *name, I32 flags)
2524 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2526 PERL_ARGS_ASSERT_GET_HV;
2536 =head1 CV Manipulation Functions
2538 =for apidoc p||get_cvn_flags
2540 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2541 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2542 exist then it will be declared (which has the same effect as saying
2543 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2544 then NULL is returned.
2546 =for apidoc p||get_cv
2548 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2554 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2556 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2558 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2560 /* XXX this is probably not what they think they're getting.
2561 * It has the same effect as "sub name;", i.e. just a forward
2563 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2564 return newSTUB(gv,0);
2571 /* Nothing in core calls this now, but we can't replace it with a macro and
2572 move it to mathoms.c as a macro would evaluate name twice. */
2574 Perl_get_cv(pTHX_ const char *name, I32 flags)
2576 PERL_ARGS_ASSERT_GET_CV;
2578 return get_cvn_flags(name, strlen(name), flags);
2581 /* Be sure to refetch the stack pointer after calling these routines. */
2585 =head1 Callback Functions
2587 =for apidoc p||call_argv
2589 Performs a callback to the specified named and package-scoped Perl subroutine
2590 with C<argv> (a NULL-terminated array of strings) as arguments. See
2593 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2599 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2601 /* See G_* flags in cop.h */
2602 /* null terminated arg list */
2607 PERL_ARGS_ASSERT_CALL_ARGV;
2612 mXPUSHs(newSVpv(*argv,0));
2617 return call_pv(sub_name, flags);
2621 =for apidoc p||call_pv
2623 Performs a callback to the specified Perl sub. See L<perlcall>.
2629 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2630 /* name of the subroutine */
2631 /* See G_* flags in cop.h */
2633 PERL_ARGS_ASSERT_CALL_PV;
2635 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2639 =for apidoc p||call_method
2641 Performs a callback to the specified Perl method. The blessed object must
2642 be on the stack. See L<perlcall>.
2648 Perl_call_method(pTHX_ const char *methname, I32 flags)
2649 /* name of the subroutine */
2650 /* See G_* flags in cop.h */
2654 PERL_ARGS_ASSERT_CALL_METHOD;
2656 len = strlen(methname);
2657 sv = flags & G_METHOD_NAMED
2658 ? sv_2mortal(newSVpvn_share(methname, len,0))
2659 : newSVpvn_flags(methname, len, SVs_TEMP);
2661 return call_sv(sv, flags | G_METHOD);
2664 /* May be called with any of a CV, a GV, or an SV containing the name. */
2666 =for apidoc p||call_sv
2668 Performs a callback to the Perl sub whose name is in the SV. See
2675 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2676 /* See G_* flags in cop.h */
2679 LOGOP myop; /* fake syntax tree node */
2685 bool oldcatch = CATCH_GET;
2687 OP* const oldop = PL_op;
2690 PERL_ARGS_ASSERT_CALL_SV;
2692 if (flags & G_DISCARD) {
2696 if (!(flags & G_WANT)) {
2697 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2702 Zero(&myop, 1, LOGOP);
2703 if (!(flags & G_NOARGS))
2704 myop.op_flags |= OPf_STACKED;
2705 myop.op_flags |= OP_GIMME_REVERSE(flags);
2709 EXTEND(PL_stack_sp, 1);
2710 if (!(flags & G_METHOD_NAMED))
2711 *++PL_stack_sp = sv;
2713 oldscope = PL_scopestack_ix;
2715 if (PERLDB_SUB && PL_curstash != PL_debstash
2716 /* Handle first BEGIN of -d. */
2717 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2718 /* Try harder, since this may have been a sighandler, thus
2719 * curstash may be meaningless. */
2720 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2721 && !(flags & G_NODEBUG))
2722 myop.op_private |= OPpENTERSUB_DB;
2724 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2725 if ( flags & G_METHOD_NAMED ) {
2726 Zero(&method_svop, 1, SVOP);
2727 method_svop.op_next = (OP*)&myop;
2728 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2729 method_svop.op_type = OP_METHOD_NAMED;
2730 method_svop.op_sv = sv;
2731 PL_op = (OP*)&method_svop;
2733 Zero(&method_unop, 1, UNOP);
2734 method_unop.op_next = (OP*)&myop;
2735 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2736 method_unop.op_type = OP_METHOD;
2737 PL_op = (OP*)&method_unop;
2739 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2740 myop.op_type = OP_ENTERSUB;
2744 if (!(flags & G_EVAL)) {
2746 CALL_BODY_SUB((OP*)&myop);
2747 retval = PL_stack_sp - (PL_stack_base + oldmark);
2748 CATCH_SET(oldcatch);
2751 myop.op_other = (OP*)&myop;
2753 create_eval_scope(flags|G_FAKINGEVAL);
2761 CALL_BODY_SUB((OP*)&myop);
2762 retval = PL_stack_sp - (PL_stack_base + oldmark);
2763 if (!(flags & G_KEEPERR)) {
2771 /* my_exit() was called */
2772 SET_CURSTASH(PL_defstash);
2776 assert(0); /* NOTREACHED */
2779 PL_restartjmpenv = NULL;
2780 PL_op = PL_restartop;
2784 PL_stack_sp = PL_stack_base + oldmark;
2785 if ((flags & G_WANT) == G_ARRAY)
2789 *++PL_stack_sp = &PL_sv_undef;
2794 if (PL_scopestack_ix > oldscope)
2795 delete_eval_scope();
2799 if (flags & G_DISCARD) {
2800 PL_stack_sp = PL_stack_base + oldmark;
2809 /* Eval a string. The G_EVAL flag is always assumed. */
2812 =for apidoc p||eval_sv
2814 Tells Perl to C<eval> the string in the SV. It supports the same flags
2815 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2821 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2823 /* See G_* flags in cop.h */
2827 UNOP myop; /* fake syntax tree node */
2828 VOL I32 oldmark = SP - PL_stack_base;
2831 OP* const oldop = PL_op;
2834 PERL_ARGS_ASSERT_EVAL_SV;
2836 if (flags & G_DISCARD) {
2843 Zero(&myop, 1, UNOP);
2844 EXTEND(PL_stack_sp, 1);
2845 *++PL_stack_sp = sv;
2847 if (!(flags & G_NOARGS))
2848 myop.op_flags = OPf_STACKED;
2849 myop.op_type = OP_ENTEREVAL;
2850 myop.op_flags |= OP_GIMME_REVERSE(flags);
2851 if (flags & G_KEEPERR)
2852 myop.op_flags |= OPf_SPECIAL;
2854 if (flags & G_RE_REPARSING)
2855 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2857 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2858 * before a PUSHEVAL, which corrupts the stack after a croak */
2859 TAINT_PROPER("eval_sv()");
2865 if (PL_op == (OP*)(&myop)) {
2866 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2868 goto fail; /* failed in compilation */
2871 retval = PL_stack_sp - (PL_stack_base + oldmark);
2872 if (!(flags & G_KEEPERR)) {
2880 /* my_exit() was called */
2881 SET_CURSTASH(PL_defstash);
2885 assert(0); /* NOTREACHED */
2888 PL_restartjmpenv = NULL;
2889 PL_op = PL_restartop;
2894 PL_stack_sp = PL_stack_base + oldmark;
2895 if ((flags & G_WANT) == G_ARRAY)
2899 *++PL_stack_sp = &PL_sv_undef;
2905 if (flags & G_DISCARD) {
2906 PL_stack_sp = PL_stack_base + oldmark;
2916 =for apidoc p||eval_pv
2918 Tells Perl to C<eval> the given string and return an SV* result.
2924 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2927 SV* sv = newSVpv(p, 0);
2929 PERL_ARGS_ASSERT_EVAL_PV;
2931 eval_sv(sv, G_SCALAR);
2940 /* just check empty string or undef? */
2941 if (croak_on_error) {
2942 SV * const errsv = ERRSV;
2943 if(SvTRUE_NN(errsv))
2944 /* replace with croak_sv? */
2945 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2951 /* Require a module. */
2954 =head1 Embedding Functions
2956 =for apidoc p||require_pv
2958 Tells Perl to C<require> the file named by the string argument. It is
2959 analogous to the Perl code C<eval "require '$file'">. It's even
2960 implemented that way; consider using load_module instead.
2965 Perl_require_pv(pTHX_ const char *pv)
2971 PERL_ARGS_ASSERT_REQUIRE_PV;
2973 PUSHSTACKi(PERLSI_REQUIRE);
2974 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2975 eval_sv(sv_2mortal(sv), G_DISCARD);
2980 S_usage(pTHX) /* XXX move this out into a module ? */
2982 /* This message really ought to be max 23 lines.
2983 * Removed -h because the user already knows that option. Others? */
2985 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2986 minimum of 509 character string literals. */
2987 static const char * const usage_msg[] = {
2988 " -0[octal] specify record separator (\\0, if no argument)\n"
2989 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2990 " -C[number/list] enables the listed Unicode features\n"
2991 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2992 " -d[:debugger] run program under debugger\n"
2993 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2994 " -e program one line of program (several -e's allowed, omit programfile)\n"
2995 " -E program like -e, but enables all optional features\n"
2996 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2997 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2998 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2999 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3000 " -l[octal] enable line ending processing, specifies line terminator\n"
3001 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3002 " -n assume \"while (<>) { ... }\" loop around program\n"
3003 " -p assume loop like -n but print line also, like sed\n"
3004 " -s enable rudimentary parsing for switches after programfile\n"
3005 " -S look for programfile using PATH environment variable\n",
3006 " -t enable tainting warnings\n"
3007 " -T enable tainting checks\n"
3008 " -u dump core after parsing program\n"
3009 " -U allow unsafe operations\n"
3010 " -v print version, patchlevel and license\n"
3011 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3012 " -w enable many useful warnings\n"
3013 " -W enable all warnings\n"
3014 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3015 " -X disable all warnings\n"
3017 "Run 'perldoc perl' for more help with Perl.\n\n",
3020 const char * const *p = usage_msg;
3021 PerlIO *out = PerlIO_stdout();
3024 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3027 PerlIO_puts(out, *p++);
3031 /* convert a string of -D options (or digits) into an int.
3032 * sets *s to point to the char after the options */
3036 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3038 static const char * const usage_msgd[] = {
3039 " Debugging flag values: (see also -d)\n"
3040 " p Tokenizing and parsing (with v, displays parse stack)\n"
3041 " s Stack snapshots (with v, displays all stacks)\n"
3042 " l Context (loop) stack processing\n"
3043 " t Trace execution\n"
3044 " o Method and overloading resolution\n",
3045 " c String/numeric conversions\n"
3046 " P Print profiling info, source file input state\n"
3047 " m Memory and SV allocation\n"
3048 " f Format processing\n"
3049 " r Regular expression parsing and execution\n"
3050 " x Syntax tree dump\n",
3051 " u Tainting checks\n"
3052 " H Hash dump -- usurps values()\n"
3053 " X Scratchpad allocation\n"
3055 " S Op slab allocation\n"
3057 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3058 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3059 " v Verbose: use in conjunction with other flags\n"
3060 " C Copy On Write\n"
3061 " A Consistency checks on internal structures\n"
3062 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3063 " M trace smart match resolution\n"
3064 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3065 " L trace some locale setting information--for Perl core development\n",
3070 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3073 /* if adding extra options, remember to update DEBUG_MASK */
3074 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3076 for (; isWORDCHAR(**s); (*s)++) {
3077 const char * const d = strchr(debopts,**s);
3079 i |= 1 << (d - debopts);
3080 else if (ckWARN_d(WARN_DEBUGGING))
3081 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3082 "invalid option -D%c, use -D'' to see choices\n", **s);
3085 else if (isDIGIT(**s)) {
3087 for (; isWORDCHAR(**s); (*s)++) ;
3089 else if (givehelp) {
3090 const char *const *p = usage_msgd;
3091 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3094 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3095 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3096 "-Dp not implemented on this platform\n");
3102 /* This routine handles any switches that can be given during run */
3105 Perl_moreswitches(pTHX_ const char *s)
3109 const char option = *s; /* used to remember option in -m/-M code */
3111 PERL_ARGS_ASSERT_MORESWITCHES;
3119 SvREFCNT_dec(PL_rs);
3120 if (s[1] == 'x' && s[2]) {
3121 const char *e = s+=2;
3127 flags = PERL_SCAN_SILENT_ILLDIGIT;
3128 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3129 if (s + numlen < e) {
3130 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3134 PL_rs = newSVpvs("");
3135 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3136 tmps = (U8*)SvPVX(PL_rs);
3137 uvchr_to_utf8(tmps, rschar);
3138 SvCUR_set(PL_rs, UNISKIP(rschar));
3143 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3144 if (rschar & ~((U8)~0))
3145 PL_rs = &PL_sv_undef;
3146 else if (!rschar && numlen >= 2)
3147 PL_rs = newSVpvs("");
3149 char ch = (char)rschar;
3150 PL_rs = newSVpvn(&ch, 1);
3153 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3158 PL_unicode = parse_unicode_opts( (const char **)&s );
3159 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3167 while (*s && !isSPACE(*s)) ++s;
3168 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3180 forbid_setid('d', FALSE);
3183 /* -dt indicates to the debugger that threads will be used */
3184 if (*s == 't' && !isWORDCHAR(s[1])) {
3186 my_setenv("PERL5DB_THREADED", "1");
3189 /* The following permits -d:Mod to accepts arguments following an =
3190 in the fashion that -MSome::Mod does. */
3191 if (*s == ':' || *s == '=') {
3198 sv = newSVpvs("no Devel::");
3200 sv = newSVpvs("use Devel::");
3204 end = s + strlen(s);
3206 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3207 while(isWORDCHAR(*s) || *s==':') ++s;
3209 sv_catpvn(sv, start, end - start);
3211 sv_catpvn(sv, start, s-start);
3212 /* Don't use NUL as q// delimiter here, this string goes in the
3214 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3217 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3221 PL_perldb = PERLDB_ALL;
3228 forbid_setid('D', FALSE);
3230 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3231 #else /* !DEBUGGING */
3232 if (ckWARN_d(WARN_DEBUGGING))
3233 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3234 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3235 for (s++; isWORDCHAR(*s); s++) ;
3242 Safefree(PL_inplace);
3243 #if defined(__CYGWIN__) /* do backup extension automagically */
3244 if (*(s+1) == '\0') {
3245 PL_inplace = savepvs(".bak");
3248 #endif /* __CYGWIN__ */
3250 const char * const start = ++s;
3251 while (*s && !isSPACE(*s))
3254 PL_inplace = savepvn(start, s - start);
3258 if (*s == '-') /* Additional switches on #! line. */
3262 case 'I': /* -I handled both here and in parse_body() */
3263 forbid_setid('I', FALSE);
3265 while (*s && isSPACE(*s))
3270 /* ignore trailing spaces (possibly followed by other switches) */
3272 for (e = p; *e && !isSPACE(*e); e++) ;
3276 } while (*p && *p != '-');
3278 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3284 Perl_croak(aTHX_ "No directory specified for -I");
3290 SvREFCNT_dec(PL_ors_sv);
3296 PL_ors_sv = newSVpvs("\n");
3297 numlen = 3 + (*s == '0');
3298 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3302 if (RsPARA(PL_rs)) {
3303 PL_ors_sv = newSVpvs("\n\n");
3306 PL_ors_sv = newSVsv(PL_rs);
3311 forbid_setid('M', FALSE); /* XXX ? */
3314 forbid_setid('m', FALSE); /* XXX ? */
3319 const char *use = "use ";
3321 /* -M-foo == 'no foo' */
3322 /* Leading space on " no " is deliberate, to make both
3323 possibilities the same length. */
3324 if (*s == '-') { use = " no "; ++s; }
3325 sv = newSVpvn(use,4);
3327 /* We allow -M'Module qw(Foo Bar)' */
3328 while(isWORDCHAR(*s) || *s==':') {
3337 Perl_croak(aTHX_ "Module name required with -%c option",
3340 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3341 "contains single ':'",
3342 (int)(s - start), start, option);
3343 end = s + strlen(s);
3345 sv_catpvn(sv, start, end - start);
3346 if (option == 'm') {
3348 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3349 sv_catpvs( sv, " ()");
3352 sv_catpvn(sv, start, s-start);
3353 /* Use NUL as q''-delimiter. */
3354 sv_catpvs(sv, " split(/,/,q\0");
3356 sv_catpvn(sv, s, end - s);
3357 sv_catpvs(sv, "\0)");
3360 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3363 Perl_croak(aTHX_ "Missing argument to -%c", option);
3374 forbid_setid('s', FALSE);
3375 PL_doswitches = TRUE;
3380 #if defined(SILENT_NO_TAINT_SUPPORT)
3381 /* silently ignore */
3382 #elif defined(NO_TAINT_SUPPORT)
3383 Perl_croak_nocontext("This perl was compiled without taint support. "
3384 "Cowardly refusing to run with -t or -T flags");
3392 PL_do_undump = TRUE;
3402 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3403 PL_dowarn |= G_WARN_ON;
3408 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3409 if (!specialWARN(PL_compiling.cop_warnings))
3410 PerlMemShared_free(PL_compiling.cop_warnings);
3411 PL_compiling.cop_warnings = pWARN_ALL ;
3415 PL_dowarn = G_WARN_ALL_OFF;
3416 if (!specialWARN(PL_compiling.cop_warnings))
3417 PerlMemShared_free(PL_compiling.cop_warnings);
3418 PL_compiling.cop_warnings = pWARN_NONE ;
3425 if (s[0] == '-') /* Additional switches on #! line. */
3430 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3436 #ifdef ALTERNATE_SHEBANG
3437 case 'S': /* OS/2 needs -S on "extproc" line. */
3440 case 'e': case 'f': case 'x': case 'E':
3441 #ifndef ALTERNATE_SHEBANG
3445 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3448 "Unrecognized switch: -%.1s (-h will show valid options)",s
3458 PerlIO * PIO_stdout;
3460 const char * const level_str = "v" PERL_VERSION_STRING;
3461 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3462 #ifdef PERL_PATCHNUM
3464 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3465 static const char num [] = PERL_PATCHNUM "*";
3467 static const char num [] = PERL_PATCHNUM;
3470 const STRLEN num_len = sizeof(num)-1;
3471 /* A very advanced compiler would fold away the strnEQ
3472 and this whole conditional, but most (all?) won't do it.
3473 SV level could also be replaced by with preprocessor
3476 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3477 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3478 of the interp so it might contain format characters
3480 level = newSVpvn(num, num_len);
3482 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3486 SV* level = newSVpvn(level_str, level_len);
3487 #endif /* #ifdef PERL_PATCHNUM */
3488 PIO_stdout = PerlIO_stdout();
3489 PerlIO_printf(PIO_stdout,
3490 "\nThis is perl " STRINGIFY(PERL_REVISION)
3491 ", version " STRINGIFY(PERL_VERSION)
3492 ", subversion " STRINGIFY(PERL_SUBVERSION)
3493 " (%"SVf") built for " ARCHNAME, level
3495 SvREFCNT_dec_NN(level);
3497 #if defined(LOCAL_PATCH_COUNT)
3498 if (LOCAL_PATCH_COUNT > 0)
3499 PerlIO_printf(PIO_stdout,
3500 "\n(with %d registered patch%s, "
3501 "see perl -V for more detail)",
3503 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3506 PerlIO_printf(PIO_stdout,
3507 "\n\nCopyright 1987-2014, Larry Wall\n");
3509 PerlIO_printf(PIO_stdout,
3510 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3513 PerlIO_printf(PIO_stdout,
3514 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3515 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3518 PerlIO_printf(PIO_stdout,
3519 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3520 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3523 PerlIO_printf(PIO_stdout,
3524 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3527 PerlIO_printf(PIO_stdout,
3528 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3531 PerlIO_printf(PIO_stdout,
3532 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3535 PerlIO_printf(PIO_stdout,
3536 "WINCE port by Rainer Keuchel, 2001-2002\n"
3537 "Built on " __DATE__ " " __TIME__ "\n\n");
3540 #ifdef __SYMBIAN32__
3541 PerlIO_printf(PIO_stdout,
3542 "Symbian port by Nokia, 2004-2005\n");
3544 #ifdef BINARY_BUILD_NOTICE
3545 BINARY_BUILD_NOTICE;
3547 PerlIO_printf(PIO_stdout,
3549 Perl may be copied only under the terms of either the Artistic License or the\n\
3550 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3551 Complete documentation for Perl, including FAQ lists, should be found on\n\
3552 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3553 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3557 /* compliments of Tom Christiansen */
3559 /* unexec() can be found in the Gnu emacs distribution */
3560 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3563 #include <lib$routines.h>
3567 Perl_my_unexec(pTHX)
3569 PERL_UNUSED_CONTEXT;
3571 SV * prog = newSVpv(BIN_EXP, 0);
3572 SV * file = newSVpv(PL_origfilename, 0);
3576 sv_catpvs(prog, "/perl");
3577 sv_catpvs(file, ".perldump");
3579 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3580 /* unexec prints msg to stderr in case of failure */
3581 PerlProc_exit(status);
3584 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3585 # elif defined(WIN32) || defined(__CYGWIN__)
3586 Perl_croak(aTHX_ "dump is not supported");
3588 ABORT(); /* for use with undump */
3593 /* initialize curinterp */
3599 # define PERLVAR(prefix,var,type)
3600 # define PERLVARA(prefix,var,n,type)
3601 # if defined(PERL_IMPLICIT_CONTEXT)
3602 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3603 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3605 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3606 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3608 # include "intrpvar.h"
3614 # define PERLVAR(prefix,var,type)
3615 # define PERLVARA(prefix,var,n,type)
3616 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3617 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3618 # include "intrpvar.h"
3628 S_init_main_stash(pTHX)
3633 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3634 /* We know that the string "main" will be in the global shared string
3635 table, so it's a small saving to use it rather than allocate another
3637 PL_curstname = newSVpvs_share("main");
3638 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3639 /* If we hadn't caused another reference to "main" to be in the shared
3640 string table above, then it would be worth reordering these two,
3641 because otherwise all we do is delete "main" from it as a consequence
3642 of the SvREFCNT_dec, only to add it again with hv_name_set */
3643 SvREFCNT_dec(GvHV(gv));
3644 hv_name_set(PL_defstash, "main", 4, 0);
3645 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3647 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3649 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3650 GvMULTI_on(PL_incgv);
3651 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3652 SvREFCNT_inc_simple_void(PL_hintgv);
3653 GvMULTI_on(PL_hintgv);
3654 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3655 SvREFCNT_inc_simple_void(PL_defgv);
3656 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3657 SvREFCNT_inc_simple_void(PL_errgv);
3658 GvMULTI_on(PL_errgv);
3659 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3660 SvREFCNT_inc_simple_void(PL_replgv);
3661 GvMULTI_on(PL_replgv);
3662 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3663 #ifdef PERL_DONT_CREATE_GVSV
3666 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3668 SET_CURSTASH(PL_defstash);
3669 CopSTASH_set(&PL_compiling, PL_defstash);
3670 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3671 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3673 /* We must init $/ before switches are processed. */
3674 sv_setpvs(get_sv("/", GV_ADD), "\n");
3678 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3681 PerlIO *rsfp = NULL;
3685 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3688 PL_origfilename = savepvs("-e");
3691 /* if find_script() returns, it returns a malloc()-ed value */
3692 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3694 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3695 const char *s = scriptname + 8;
3701 * Tell apart "normal" usage of fdscript, e.g.
3702 * with bash on FreeBSD:
3703 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3704 * from usage in suidperl.
3705 * Does any "normal" usage leave garbage after the number???
3706 * Is it a mistake to use a similar /dev/fd/ construct for
3711 * Be supersafe and do some sanity-checks.
3712 * Still, can we be sure we got the right thing?
3715 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3718 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3720 scriptname = savepv(s + 1);
3721 Safefree(PL_origfilename);
3722 PL_origfilename = (char *)scriptname;
3727 CopFILE_free(PL_curcop);
3728 CopFILE_set(PL_curcop, PL_origfilename);
3729 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3730 scriptname = (char *)"";
3731 if (fdscript >= 0) {
3732 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3734 else if (!*scriptname) {
3735 forbid_setid(0, *suidscript);
3739 #ifdef FAKE_BIT_BUCKET
3740 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3741 * is called) and still have the "-e" work. (Believe it or not,
3742 * a /dev/null is required for the "-e" to work because source
3743 * filter magic is used to implement it. ) This is *not* a general
3744 * replacement for a /dev/null. What we do here is create a temp
3745 * file (an empty file), open up that as the script, and then
3746 * immediately close and unlink it. Close enough for jazz. */
3747 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3748 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3749 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3750 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3751 FAKE_BIT_BUCKET_TEMPLATE
3753 const char * const err = "Failed to create a fake bit bucket";
3754 if (strEQ(scriptname, BIT_BUCKET)) {
3755 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3756 int tmpfd = mkstemp(tmpname);
3758 scriptname = tmpname;
3761 Perl_croak(aTHX_ err);
3764 scriptname = mktemp(tmpname);
3766 Perl_croak(aTHX_ err);
3771 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3772 #ifdef FAKE_BIT_BUCKET
3773 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3774 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3775 && strlen(scriptname) == sizeof(tmpname) - 1) {
3778 scriptname = BIT_BUCKET;
3782 /* PSz 16 Sep 03 Keep neat error message */
3784 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3786 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3787 CopFILE(PL_curcop), Strerror(errno));
3789 #if defined(HAS_FCNTL) && defined(F_SETFD)
3790 /* ensure close-on-exec */
3791 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3794 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3795 && S_ISDIR(tmpstatbuf.st_mode))
3796 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3804 * I_SYSSTATVFS HAS_FSTATVFS
3806 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3807 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3808 * here so that metaconfig picks them up. */
3811 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3812 /* Don't even need this function. */
3815 S_validate_suid(pTHX_ PerlIO *rsfp)
3817 const Uid_t my_uid = PerlProc_getuid();
3818 const Uid_t my_euid = PerlProc_geteuid();
3819 const Gid_t my_gid = PerlProc_getgid();
3820 const Gid_t my_egid = PerlProc_getegid();
3822 PERL_ARGS_ASSERT_VALIDATE_SUID;
3824 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3827 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3828 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3830 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3833 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3834 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3835 /* not set-id, must be wrapped */
3838 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3841 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3847 PERL_ARGS_ASSERT_FIND_BEGINNING;
3849 /* skip forward in input to the real script? */
3852 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3853 Perl_croak(aTHX_ "No Perl script found in input\n");
3855 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3856 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3857 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3859 while (*s == ' ' || *s == '\t') s++;
3861 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3862 || s2[-1] == '_') s2--;
3863 if (strnEQ(s2-4,"perl",4))
3864 while ((s = moreswitches(s)))
3873 /* no need to do anything here any more if we don't
3875 #ifndef NO_TAINT_SUPPORT
3877 const Uid_t my_uid = PerlProc_getuid();
3878 const Uid_t my_euid = PerlProc_geteuid();
3879 const Gid_t my_gid = PerlProc_getgid();
3880 const Gid_t my_egid = PerlProc_getegid();
3882 /* Should not happen: */
3883 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3884 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3888 * Should go by suidscript, not uid!=euid: why disallow
3889 * system("ls") in scripts run from setuid things?
3890 * Or, is this run before we check arguments and set suidscript?
3891 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3892 * (We never have suidscript, can we be sure to have fdscript?)
3893 * Or must then go by UID checks? See comments in forbid_setid also.
3897 /* This is used very early in the lifetime of the program,
3898 * before even the options are parsed, so PL_tainting has
3899 * not been initialized properly. */
3901 Perl_doing_taint(int argc, char *argv[], char *envp[])
3903 #ifndef PERL_IMPLICIT_SYS
3904 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3905 * before we have an interpreter-- and the whole point of this
3906 * function is to be called at such an early stage. If you are on
3907 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3908 * "tainted because running with altered effective ids', you'll
3909 * have to add your own checks somewhere in here. The two most
3910 * known samples of 'implicitness' are Win32 and NetWare, neither
3911 * of which has much of concept of 'uids'. */
3912 Uid_t uid = PerlProc_getuid();
3913 Uid_t euid = PerlProc_geteuid();
3914 Gid_t gid = PerlProc_getgid();
3915 Gid_t egid = PerlProc_getegid();
3922 if (uid && (euid != uid || egid != gid))
3924 #endif /* !PERL_IMPLICIT_SYS */
3925 /* This is a really primitive check; environment gets ignored only
3926 * if -T are the first chars together; otherwise one gets
3927 * "Too late" message. */
3928 if ( argc > 1 && argv[1][0] == '-'
3929 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3934 /* Passing the flag as a single char rather than a string is a slight space
3935 optimisation. The only message that isn't /^-.$/ is
3936 "program input from stdin", which is substituted in place of '\0', which
3937 could never be a command line flag. */
3939 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3942 char string[3] = "-x";
3943 const char *message = "program input from stdin";
3950 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3951 if (PerlProc_getuid() != PerlProc_geteuid())
3952 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3953 if (PerlProc_getgid() != PerlProc_getegid())
3954 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3955 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3957 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3961 Perl_init_dbargs(pTHX)
3963 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3968 /* Someone has already created it.
3969 It might have entries, and if we just turn off AvREAL(), they will
3970 "leak" until global destruction. */
3972 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3973 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3975 AvREIFY_only(PL_dbargs);
3979 Perl_init_debugger(pTHX)
3982 HV * const ostash = PL_curstash;
3984 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3986 Perl_init_dbargs(aTHX);
3987 PL_DBgv = MUTABLE_GV(
3988 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3990 PL_DBline = MUTABLE_GV(
3991 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3993 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3994 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3996 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3997 if (!SvIOK(PL_DBsingle))
3998 sv_setiv(PL_DBsingle, 0);
3999 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4000 if (!SvIOK(PL_DBtrace))
4001 sv_setiv(PL_DBtrace, 0);
4002 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4003 if (!SvIOK(PL_DBsignal))
4004 sv_setiv(PL_DBsignal, 0);
4005 SvREFCNT_dec(PL_curstash);
4006 PL_curstash = ostash;
4009 #ifndef STRESS_REALLOC
4010 #define REASONABLE(size) (size)
4011 #define REASONABLE_but_at_least(size,min) (size)
4013 #define REASONABLE(size) (1) /* unreasonable */
4014 #define REASONABLE_but_at_least(size,min) (min)
4018 Perl_init_stacks(pTHX)
4021 /* start with 128-item stack and 8K cxstack */
4022 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4023 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4024 PL_curstackinfo->si_type = PERLSI_MAIN;
4025 PL_curstack = PL_curstackinfo->si_stack;
4026 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4028 PL_stack_base = AvARRAY(PL_curstack);
4029 PL_stack_sp = PL_stack_base;
4030 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4032 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4035 PL_tmps_max = REASONABLE(128);
4037 Newx(PL_markstack,REASONABLE(32),I32);
4038 PL_markstack_ptr = PL_markstack;
4039 PL_markstack_max = PL_markstack + REASONABLE(32);
4043 Newx(PL_scopestack,REASONABLE(32),I32);
4045 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4047 PL_scopestack_ix = 0;
4048 PL_scopestack_max = REASONABLE(32);
4050 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4051 PL_savestack_ix = 0;
4052 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4061 while (PL_curstackinfo->si_next)
4062 PL_curstackinfo = PL_curstackinfo->si_next;
4063 while (PL_curstackinfo) {
4064 PERL_SI *p = PL_curstackinfo->si_prev;
4065 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4066 Safefree(PL_curstackinfo->si_cxstack);
4067 Safefree(PL_curstackinfo);
4068 PL_curstackinfo = p;
4070 Safefree(PL_tmps_stack);
4071 Safefree(PL_markstack);
4072 Safefree(PL_scopestack);
4074 Safefree(PL_scopestack_name);
4076 Safefree(PL_savestack);
4080 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4082 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4083 AV *const isa = GvAVn(gv);
4086 PERL_ARGS_ASSERT_POPULATE_ISA;
4088 if(AvFILLp(isa) != -1)
4091 /* NOTE: No support for tied ISA */
4093 va_start(args, len);
4095 const char *const parent = va_arg(args, const char*);
4100 parent_len = va_arg(args, size_t);
4102 /* Arguments are supplied with a trailing :: */
4103 assert(parent_len > 2);
4104 assert(parent[parent_len - 1] == ':');
4105 assert(parent[parent_len - 2] == ':');
4106 av_push(isa, newSVpvn(parent, parent_len - 2));
4107 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4114 S_init_predump_symbols(pTHX)
4120 sv_setpvs(get_sv("\"", GV_ADD), " ");
4121 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4124 /* Historically, PVIOs were blessed into IO::Handle, unless
4125 FileHandle was loaded, in which case they were blessed into
4126 that. Action at a distance.
4127 However, if we simply bless into IO::Handle, we break code
4128 that assumes that PVIOs will have (among others) a seek
4129 method. IO::File inherits from IO::Handle and IO::Seekable,
4130 and provides the needed methods. But if we simply bless into
4131 it, then we break code that assumed that by loading
4132 IO::Handle, *it* would work.
4133 So a compromise is to set up the correct @IO::File::ISA,
4134 so that code that does C<use IO::Handle>; will still work.
4137 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4138 STR_WITH_LEN("IO::Handle::"),
4139 STR_WITH_LEN("IO::Seekable::"),
4140 STR_WITH_LEN("Exporter::"),
4143 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4144 GvMULTI_on(PL_stdingv);
4145 io = GvIOp(PL_stdingv);
4146 IoTYPE(io) = IoTYPE_RDONLY;
4147 IoIFP(io) = PerlIO_stdin();
4148 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4150 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4152 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4155 IoTYPE(io) = IoTYPE_WRONLY;
4156 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4158 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4160 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4162 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4163 GvMULTI_on(PL_stderrgv);
4164 io = GvIOp(PL_stderrgv);
4165 IoTYPE(io) = IoTYPE_WRONLY;
4166 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4167 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4169 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4171 PL_statname = newSVpvs(""); /* last filename we did stat on */
4175 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4179 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4181 argc--,argv++; /* skip name of script */
4182 if (PL_doswitches) {
4183 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4187 if (argv[0][1] == '-' && !argv[0][2]) {
4191 if ((s = strchr(argv[0], '='))) {
4192 const char *const start_name = argv[0] + 1;
4193 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4194 TRUE, SVt_PV)), s + 1);
4197 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4200 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4201 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4202 GvMULTI_on(PL_argvgv);
4203 av_clear(GvAVn(PL_argvgv));
4204 for (; argc > 0; argc--,argv++) {
4205 SV * const sv = newSVpv(argv[0],0);
4206 av_push(GvAV(PL_argvgv),sv);
4207 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4208 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4211 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4212 (void)sv_utf8_decode(sv);
4216 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4217 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4218 "-i used with no filenames on the command line, "
4219 "reading from STDIN");
4223 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4228 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4230 PL_toptarget = newSV_type(SVt_PVIV);
4231 sv_setpvs(PL_toptarget, "");
4232 PL_bodytarget = newSV_type(SVt_PVIV);
4233 sv_setpvs(PL_bodytarget, "");
4234 PL_formtarget = PL_bodytarget;
4238 init_argv_symbols(argc,argv);
4240 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4241 sv_setpv(GvSV(tmpgv),PL_origfilename);
4243 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4245 bool env_is_not_environ;
4246 SvREFCNT_inc_simple_void_NN(PL_envgv);
4247 GvMULTI_on(PL_envgv);
4248 hv = GvHVn(PL_envgv);
4249 hv_magic(hv, NULL, PERL_MAGIC_env);
4251 #ifdef USE_ENVIRON_ARRAY
4252 /* Note that if the supplied env parameter is actually a copy
4253 of the global environ then it may now point to free'd memory
4254 if the environment has been modified since. To avoid this
4255 problem we treat env==NULL as meaning 'use the default'
4259 env_is_not_environ = env != environ;
4260 if (env_is_not_environ
4261 # ifdef USE_ITHREADS
4262 && PL_curinterp == aTHX
4271 for (; *env; env++) {
4274 if (!(s = strchr(old_var,'=')) || s == old_var)
4277 #if defined(MSDOS) && !defined(DJGPP)
4279 (void)strupr(old_var);
4282 sv = newSVpv(s+1, 0);
4283 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4284 if (env_is_not_environ)
4288 #endif /* USE_ENVIRON_ARRAY */
4289 #endif /* !PERL_MICRO */
4293 /* touch @F array to prevent spurious warnings 20020415 MJD */
4295 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4300 S_init_perllib(pTHX)
4304 const char *perl5lib = NULL;
4307 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4311 if (!TAINTING_get) {
4313 perl5lib = PerlEnv_getenv("PERL5LIB");
4315 * It isn't possible to delete an environment variable with
4316 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4317 * case we treat PERL5LIB as undefined if it has a zero-length value.
4319 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4320 if (perl5lib && *perl5lib != '\0')
4324 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4326 s = PerlEnv_getenv("PERLLIB");
4328 incpush_use_sep(s, 0, 0);
4331 /* Treat PERL5?LIB as a possible search list logical name -- the
4332 * "natural" VMS idiom for a Unix path string. We allow each
4333 * element to be a set of |-separated directories for compatibility.
4337 if (my_trnlnm("PERL5LIB",buf,0))
4339 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4340 } while (my_trnlnm("PERL5LIB",buf,++idx));
4342 while (my_trnlnm("PERLLIB",buf,idx++))
4343 incpush_use_sep(buf, 0, 0);
4348 #ifndef PERL_IS_MINIPERL
4349 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4350 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4352 /* Use the ~-expanded versions of APPLLIB (undocumented),
4353 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4356 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4357 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4361 /* sitearch is always relative to sitelib on Windows for
4362 * DLL-based path intuition to work correctly */
4363 # if !defined(WIN32)
4364 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4365 INCPUSH_CAN_RELOCATE);
4371 /* this picks up sitearch as well */
4372 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4374 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4376 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4380 #ifdef PERL_VENDORARCH_EXP
4381 /* vendorarch is always relative to vendorlib on Windows for
4382 * DLL-based path intuition to work correctly */
4383 # if !defined(WIN32)
4384 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4385 INCPUSH_CAN_RELOCATE);
4389 #ifdef PERL_VENDORLIB_EXP
4391 /* this picks up vendorarch as well */
4392 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4394 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4396 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4397 INCPUSH_CAN_RELOCATE);
4402 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4406 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4410 s = win32_get_privlib(PERL_FS_VERSION, &len);
4412 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4415 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4417 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4421 #ifdef PERL_OTHERLIBDIRS
4422 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4423 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4424 |INCPUSH_CAN_RELOCATE);
4427 if (!TAINTING_get) {
4430 * It isn't possible to delete an environment variable with
4431 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4432 * case we treat PERL5LIB as undefined if it has a zero-length value.
4434 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4435 if (perl5lib && *perl5lib != '\0')
4439 incpush_use_sep(perl5lib, 0,
4440 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4442 /* Treat PERL5?LIB as a possible search list logical name -- the
4443 * "natural" VMS idiom for a Unix path string. We allow each
4444 * element to be a set of |-separated directories for compatibility.
4448 if (my_trnlnm("PERL5LIB",buf,0))
4450 incpush_use_sep(buf, 0,
4451 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4452 } while (my_trnlnm("PERL5LIB",buf,++idx));
4456 /* Use the ~-expanded versions of APPLLIB (undocumented),
4457 SITELIB and VENDORLIB for older versions
4460 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4461 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4464 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4465 /* Search for version-specific dirs below here */
4466 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4467 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4471 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4472 /* Search for version-specific dirs below here */
4473 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4474 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4477 #ifdef PERL_OTHERLIBDIRS
4478 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4479 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4480 |INCPUSH_CAN_RELOCATE);
4482 #endif /* !PERL_IS_MINIPERL */
4485 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4488 #if defined(DOSISH) || defined(__SYMBIAN32__)
4489 # define PERLLIB_SEP ';'
4492 # define PERLLIB_SEP '|'
4494 # define PERLLIB_SEP ':'
4497 #ifndef PERLLIB_MANGLE
4498 # define PERLLIB_MANGLE(s,n) (s)
4501 #ifndef PERL_IS_MINIPERL
4502 /* Push a directory onto @INC if it exists.
4503 Generate a new SV if we do this, to save needing to copy the SV we push
4506 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4511 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4513 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4514 S_ISDIR(tmpstatbuf.st_mode)) {
4516 dir = newSVsv(stem);
4518 /* Truncate dir back to stem. */
4519 SvCUR_set(dir, SvCUR(stem));
4526 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4528 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4531 PERL_ARGS_ASSERT_MAYBERELOCATE;
4534 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4535 defined to so something (in os2/os2.c), but the code has been
4536 this way, ignoring any possible changed of length, since
4537 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4539 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4545 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4547 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4548 sv_usepvn(libdir,unix,len);
4551 PerlIO_printf(Perl_error_log,
4552 "Failed to unixify @INC element \"%s\"\n",
4553 SvPV_nolen_const(libdir));
4557 /* Do the if() outside the #ifdef to avoid warnings about an unused
4560 #ifdef PERL_RELOCATABLE_INC
4562 * Relocatable include entries are marked with a leading .../
4565 * 0: Remove that leading ".../"
4566 * 1: Remove trailing executable name (anything after the last '/')
4567 * from the perl path to give a perl prefix
4569 * While the @INC element starts "../" and the prefix ends with a real
4570 * directory (ie not . or ..) chop that real directory off the prefix
4571 * and the leading "../" from the @INC element. ie a logical "../"
4573 * Finally concatenate the prefix and the remainder of the @INC element
4574 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4575 * generates /usr/local/lib/perl5
4577 const char *libpath = SvPVX(libdir);
4578 STRLEN libpath_len = SvCUR(libdir);
4579 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4581 SV * const caret_X = get_sv("\030", 0);
4582 /* Going to use the SV just as a scratch buffer holding a C
4588 /* $^X is *the* source of taint if tainting is on, hence
4589 SvPOK() won't be true. */
4591 assert(SvPOKp(caret_X));
4592 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4594 /* Firstly take off the leading .../
4595 If all else fail we'll do the paths relative to the current
4597 sv_chop(libdir, libpath + 4);
4598 /* Don't use SvPV as we're intentionally bypassing taining,
4599 mortal copies that the mg_get of tainting creates, and
4600 corruption that seems to come via the save stack.
4601 I guess that the save stack isn't correctly set up yet. */
4602 libpath = SvPVX(libdir);
4603 libpath_len = SvCUR(libdir);
4605 /* This would work more efficiently with memrchr, but as it's
4606 only a GNU extension we'd need to probe for it and
4607 implement our own. Not hard, but maybe not worth it? */
4609 prefix = SvPVX(prefix_sv);
4610 lastslash = strrchr(prefix, '/');
4612 /* First time in with the *lastslash = '\0' we just wipe off
4613 the trailing /perl from (say) /usr/foo/bin/perl
4617 while ((*lastslash = '\0'), /* Do that, come what may. */
4618 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4619 && (lastslash = strrchr(prefix, '/')))) {
4620 if (lastslash[1] == '\0'
4621 || (lastslash[1] == '.'
4622 && (lastslash[2] == '/' /* ends "/." */
4623 || (lastslash[2] == '/'
4624 && lastslash[3] == '/' /* or "/.." */
4626 /* Prefix ends "/" or "/." or "/..", any of which
4627 are fishy, so don't do any more logical cleanup.
4631 /* Remove leading "../" from path */
4634 /* Next iteration round the loop removes the last
4635 directory name from prefix by writing a '\0' in
4636 the while clause. */
4638 /* prefix has been terminated with a '\0' to the correct
4639 length. libpath points somewhere into the libdir SV.
4640 We need to join the 2 with '/' and drop the result into
4642 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4643 SvREFCNT_dec(libdir);
4644 /* And this is the new libdir. */
4647 (PerlProc_getuid() != PerlProc_geteuid() ||
4648 PerlProc_getgid() != PerlProc_getegid())) {
4649 /* Need to taint relocated paths if running set ID */
4650 SvTAINTED_on(libdir);
4653 SvREFCNT_dec(prefix_sv);
4661 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4664 #ifndef PERL_IS_MINIPERL
4665 const U8 using_sub_dirs
4666 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4667 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4668 const U8 add_versioned_sub_dirs
4669 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4670 const U8 add_archonly_sub_dirs
4671 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4672 #ifdef PERL_INC_VERSION_LIST
4673 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4676 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4677 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4678 AV *const inc = GvAVn(PL_incgv);
4680 PERL_ARGS_ASSERT_INCPUSH;
4683 /* Could remove this vestigial extra block, if we don't mind a lot of
4684 re-indenting diff noise. */
4686 SV *const libdir = mayberelocate(dir, len, flags);
4687 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4688 arranged to unshift #! line -I onto the front of @INC. However,
4689 -I can add version and architecture specific libraries, and they
4690 need to go first. The old code assumed that it was always
4691 pushing. Hence to make it work, need to push the architecture
4692 (etc) libraries onto a temporary array, then "unshift" that onto
4693 the front of @INC. */
4694 #ifndef PERL_IS_MINIPERL
4695 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4698 * BEFORE pushing libdir onto @INC we may first push version- and
4699 * archname-specific sub-directories.
4701 if (using_sub_dirs) {
4702 SV *subdir = newSVsv(libdir);
4703 #ifdef PERL_INC_VERSION_LIST
4704 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4705 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4706 const char * const *incver;
4709 if (add_versioned_sub_dirs) {
4710 /* .../version/archname if -d .../version/archname */
4711 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4712 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4714 /* .../version if -d .../version */
4715 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4716 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4719 #ifdef PERL_INC_VERSION_LIST
4721 for (incver = incverlist; *incver; incver++) {
4722 /* .../xxx if -d .../xxx */
4723 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4724 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4729 if (add_archonly_sub_dirs) {
4730 /* .../archname if -d .../archname */
4731 sv_catpvs(subdir, "/" ARCHNAME);
4732 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4736 assert (SvREFCNT(subdir) == 1);
4737 SvREFCNT_dec(subdir);
4739 #endif /* !PERL_IS_MINIPERL */
4740 /* finally add this lib directory at the end of @INC */
4742 #ifdef PERL_IS_MINIPERL
4743 const Size_t extra = 0;
4745 Size_t extra = av_len(av) + 1;
4747 av_unshift(inc, extra + push_basedir);
4749 av_store(inc, extra, libdir);
4750 #ifndef PERL_IS_MINIPERL
4752 /* av owns a reference, av_store() expects to be donated a
4753 reference, and av expects to be sane when it's cleared.
4754 If I wanted to be naughty and wrong, I could peek inside the
4755 implementation of av_clear(), realise that it uses
4756 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4757 and so directly steal from it (with a memcpy() to inc, and
4758 then memset() to NULL them out. But people copy code from the
4759 core expecting it to be best practise, so let's use the API.
4760 Although studious readers will note that I'm not checking any
4762 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4767 else if (push_basedir) {
4768 av_push(inc, libdir);
4771 if (!push_basedir) {
4772 assert (SvREFCNT(libdir) == 1);
4773 SvREFCNT_dec(libdir);
4779 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4783 /* This logic has been broken out from S_incpush(). It may be possible to
4786 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4788 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4789 * argument to incpush_use_sep. This allows creation of relocatable
4790 * Perl distributions that patch the binary at install time. Those
4791 * distributions will have to provide their own relocation tools; this
4792 * is not a feature otherwise supported by core Perl.
4794 #ifndef PERL_RELOCATABLE_INCPUSH
4801 /* Break at all separators */
4802 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4804 /* skip any consecutive separators */
4806 /* Uncomment the next line for PATH semantics */
4807 /* But you'll need to write tests */
4808 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4810 incpush(p, (STRLEN)(s - p), flags);
4815 incpush(p, (STRLEN)(end - p), flags);
4820 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4824 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4830 PERL_ARGS_ASSERT_CALL_LIST;
4832 while (av_len(paramList) >= 0) {
4833 cv = MUTABLE_CV(av_shift(paramList));
4835 if (paramList == PL_beginav) {
4836 /* save PL_beginav for compiler */
4837 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4839 else if (paramList == PL_checkav) {
4840 /* save PL_checkav for compiler */
4841 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4843 else if (paramList == PL_unitcheckav) {
4844 /* save PL_unitcheckav for compiler */
4845 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4856 PL_madskills |= 16384;
4861 PL_madskills &= ~16384;
4864 (void)SvPV_const(atsv, len);
4866 PL_curcop = &PL_compiling;
4867 CopLINE_set(PL_curcop, oldline);
4868 if (paramList == PL_beginav)
4869 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4871 Perl_sv_catpvf(aTHX_ atsv,
4872 "%s failed--call queue aborted",
4873 paramList == PL_checkav ? "CHECK"
4874 : paramList == PL_initav ? "INIT"
4875 : paramList == PL_unitcheckav ? "UNITCHECK"
4877 while (PL_scopestack_ix > oldscope)
4880 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4887 /* my_exit() was called */
4888 while (PL_scopestack_ix > oldscope)
4891 SET_CURSTASH(PL_defstash);
4892 PL_curcop = &PL_compiling;
4893 CopLINE_set(PL_curcop, oldline);
4896 assert(0); /* NOTREACHED */
4899 PL_curcop = &PL_compiling;
4900 CopLINE_set(PL_curcop, oldline);
4903 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4912 Perl_my_exit(pTHX_ U32 status)
4915 if (PL_exit_flags & PERL_EXIT_ABORT) {
4918 if (PL_exit_flags & PERL_EXIT_WARN) {
4919 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4920 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4921 PL_exit_flags &= ~PERL_EXIT_ABORT;
4931 STATUS_EXIT_SET(status);
4938 Perl_my_failure_exit(pTHX)
4942 /* We have been called to fall on our sword. The desired exit code
4943 * should be already set in STATUS_UNIX, but could be shifted over
4944 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4947 * If an error code has not been set, then force the issue.
4949 if (MY_POSIX_EXIT) {
4951 /* According to the die_exit.t tests, if errno is non-zero */
4952 /* It should be used for the error status. */
4954 if (errno == EVMSERR) {
4955 STATUS_NATIVE = vaxc$errno;
4958 /* According to die_exit.t tests, if the child_exit code is */
4959 /* also zero, then we need to exit with a code of 255 */
4960 if ((errno != 0) && (errno < 256))
4961 STATUS_UNIX_EXIT_SET(errno);
4962 else if (STATUS_UNIX < 255) {
4963 STATUS_UNIX_EXIT_SET(255);
4968 /* The exit code could have been set by $? or vmsish which
4969 * means that it may not have fatal set. So convert
4970 * success/warning codes to fatal with out changing
4971 * the POSIX status code. The severity makes VMS native
4972 * status handling work, while UNIX mode programs use the
4973 * the POSIX exit codes.
4975 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4976 STATUS_NATIVE &= STS$M_COND_ID;
4977 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4981 /* Traditionally Perl on VMS always expects a Fatal Error. */
4982 if (vaxc$errno & 1) {
4984 /* So force success status to failure */
4985 if (STATUS_NATIVE & 1)
4990 STATUS_UNIX = EINTR; /* In case something cares */
4995 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4997 /* Encode the severity code */
4998 severity = STATUS_NATIVE & STS$M_SEVERITY;
4999 STATUS_UNIX = (severity ? severity : 1) << 8;
5001 /* Perl expects this to be a fatal error */
5002 if (severity != STS$K_SEVERE)
5011 STATUS_UNIX_SET(errno);
5013 exitstatus = STATUS_UNIX >> 8;
5014 if (exitstatus & 255)
5015 STATUS_UNIX_SET(exitstatus);
5017 STATUS_UNIX_SET(255);
5020 if (PL_exit_flags & PERL_EXIT_ABORT) {
5023 if (PL_exit_flags & PERL_EXIT_WARN) {
5024 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5025 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5026 PL_exit_flags &= ~PERL_EXIT_ABORT;
5032 S_my_exit_jump(pTHX)
5037 SvREFCNT_dec(PL_e_script);
5041 POPSTACK_TO(PL_mainstack);
5049 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5052 const char * const p = SvPVX_const(PL_e_script);
5053 const char *nl = strchr(p, '\n');
5055 PERL_UNUSED_ARG(idx);
5056 PERL_UNUSED_ARG(maxlen);
5058 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5060 filter_del(read_e_script);
5063 sv_catpvn(buf_sv, p, nl-p);
5064 sv_chop(PL_e_script, nl);
5070 * c-indentation-style: bsd
5072 * indent-tabs-mode: nil
5075 * ex: set ts=8 sts=4 sw=4 et: