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_BOOL_AS_CHAR
1667 " PERL_BOOL_AS_CHAR"
1669 # ifdef PERL_DISABLE_PMC
1672 # ifdef PERL_DONT_CREATE_GVSV
1673 " PERL_DONT_CREATE_GVSV"
1675 # ifdef PERL_EXTERNAL_GLOB
1676 " PERL_EXTERNAL_GLOB"
1678 # ifdef PERL_HASH_FUNC_SIPHASH
1679 " PERL_HASH_FUNC_SIPHASH"
1681 # ifdef PERL_HASH_FUNC_SDBM
1682 " PERL_HASH_FUNC_SDBM"
1684 # ifdef PERL_HASH_FUNC_DJB2
1685 " PERL_HASH_FUNC_DJB2"
1687 # ifdef PERL_HASH_FUNC_SUPERFAST
1688 " PERL_HASH_FUNC_SUPERFAST"
1690 # ifdef PERL_HASH_FUNC_MURMUR3
1691 " PERL_HASH_FUNC_MURMUR3"
1693 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1694 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1696 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1699 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1702 # ifdef PERL_IS_MINIPERL
1705 # ifdef PERL_MALLOC_WRAP
1708 # ifdef PERL_MEM_LOG
1711 # ifdef PERL_MEM_LOG_NOIMPL
1712 " PERL_MEM_LOG_NOIMPL"
1714 # ifdef PERL_NEW_COPY_ON_WRITE
1715 " PERL_NEW_COPY_ON_WRITE"
1717 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1718 " PERL_PERTURB_KEYS_DETERMINISTIC"
1720 # ifdef PERL_PERTURB_KEYS_DISABLED
1721 " PERL_PERTURB_KEYS_DISABLED"
1723 # ifdef PERL_PERTURB_KEYS_RANDOM
1724 " PERL_PERTURB_KEYS_RANDOM"
1726 # ifdef PERL_PRESERVE_IVUV
1727 " PERL_PRESERVE_IVUV"
1729 # ifdef PERL_RELOCATABLE_INCPUSH
1730 " PERL_RELOCATABLE_INCPUSH"
1732 # ifdef PERL_USE_DEVEL
1735 # ifdef PERL_USE_SAFE_PUTENV
1736 " PERL_USE_SAFE_PUTENV"
1738 # ifdef UNLINK_ALL_VERSIONS
1739 " UNLINK_ALL_VERSIONS"
1741 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1742 " USE_ATTRIBUTES_FOR_PERLIO"
1744 # ifdef USE_FAST_STDIO
1747 # ifdef USE_HASH_SEED_EXPLICIT
1748 " USE_HASH_SEED_EXPLICIT"
1753 # ifdef USE_LOCALE_CTYPE
1756 # ifdef USE_PERL_ATOF
1759 # ifdef USE_SITECUSTOMIZE
1760 " USE_SITECUSTOMIZE"
1763 PERL_UNUSED_ARG(cv);
1764 PERL_UNUSED_ARG(items);
1766 EXTEND(SP, entries);
1768 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1769 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1770 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1774 PUSHs(Perl_newSVpvn_flags(aTHX_
1775 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1778 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1782 PUSHs(&PL_sv_undef);
1785 for (i = 1; i <= local_patch_count; i++) {
1786 /* This will be an undef, if PL_localpatches[i] is NULL. */
1787 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1793 #define INCPUSH_UNSHIFT 0x01
1794 #define INCPUSH_ADD_OLD_VERS 0x02
1795 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1796 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1797 #define INCPUSH_NOT_BASEDIR 0x10
1798 #define INCPUSH_CAN_RELOCATE 0x20
1799 #define INCPUSH_ADD_SUB_DIRS \
1800 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1803 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1807 int argc = PL_origargc;
1808 char **argv = PL_origargv;
1809 const char *scriptname = NULL;
1810 VOL bool dosearch = FALSE;
1812 bool doextract = FALSE;
1813 const char *cddir = NULL;
1814 #ifdef USE_SITECUSTOMIZE
1815 bool minus_f = FALSE;
1817 SV *linestr_sv = NULL;
1818 bool add_read_e_script = FALSE;
1819 U32 lex_start_flags = 0;
1821 PERL_SET_PHASE(PERL_PHASE_START);
1827 for (argc--,argv++; argc > 0; argc--,argv++) {
1828 if (argv[0][0] != '-' || !argv[0][1])
1834 #ifndef PERL_STRICT_CR
1858 if ((s = moreswitches(s)))
1863 #if defined(SILENT_NO_TAINT_SUPPORT)
1864 /* silently ignore */
1865 #elif defined(NO_TAINT_SUPPORT)
1866 Perl_croak_nocontext("This perl was compiled without taint support. "
1867 "Cowardly refusing to run with -t or -T flags");
1869 CHECK_MALLOC_TOO_LATE_FOR('t');
1870 if( !TAINTING_get ) {
1871 TAINT_WARN_set(TRUE);
1878 #if defined(SILENT_NO_TAINT_SUPPORT)
1879 /* silently ignore */
1880 #elif defined(NO_TAINT_SUPPORT)
1881 Perl_croak_nocontext("This perl was compiled without taint support. "
1882 "Cowardly refusing to run with -t or -T flags");
1884 CHECK_MALLOC_TOO_LATE_FOR('T');
1886 TAINT_WARN_set(FALSE);
1895 forbid_setid('e', FALSE);
1897 PL_e_script = newSVpvs("");
1898 add_read_e_script = TRUE;
1901 sv_catpv(PL_e_script, s);
1903 sv_catpv(PL_e_script, argv[1]);
1907 Perl_croak(aTHX_ "No code specified for -%c", c);
1908 sv_catpvs(PL_e_script, "\n");
1912 #ifdef USE_SITECUSTOMIZE
1918 case 'I': /* -I handled both here and in moreswitches() */
1919 forbid_setid('I', FALSE);
1920 if (!*++s && (s=argv[1]) != NULL) {
1924 STRLEN len = strlen(s);
1925 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1928 Perl_croak(aTHX_ "No directory specified for -I");
1931 forbid_setid('S', FALSE);
1940 opts_prog = newSVpvs("use Config; Config::_V()");
1944 opts_prog = Perl_newSVpvf(aTHX_
1945 "use Config; Config::config_vars(qw%c%s%c)",
1949 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1950 /* don't look for script or read stdin */
1951 scriptname = BIT_BUCKET;
1963 if (!*++s || isSPACE(*s)) {
1967 /* catch use of gnu style long options.
1968 Both of these exit immediately. */
1969 if (strEQ(s, "version"))
1971 if (strEQ(s, "help"))
1976 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1987 #ifndef SECURE_INTERNAL_GETENV
1990 (s = PerlEnv_getenv("PERL5OPT")))
1994 if (*s == '-' && *(s+1) == 'T') {
1995 #if defined(SILENT_NO_TAINT_SUPPORT)
1996 /* silently ignore */
1997 #elif defined(NO_TAINT_SUPPORT)
1998 Perl_croak_nocontext("This perl was compiled without taint support. "
1999 "Cowardly refusing to run with -t or -T flags");
2001 CHECK_MALLOC_TOO_LATE_FOR('T');
2003 TAINT_WARN_set(FALSE);
2007 char *popt_copy = NULL;
2020 if (!strchr("CDIMUdmtwW", *s))
2021 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2025 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2026 s = popt_copy + (s - d);
2034 #if defined(SILENT_NO_TAINT_SUPPORT)
2035 /* silently ignore */
2036 #elif defined(NO_TAINT_SUPPORT)
2037 Perl_croak_nocontext("This perl was compiled without taint support. "
2038 "Cowardly refusing to run with -t or -T flags");
2040 if( !TAINTING_get) {
2041 TAINT_WARN_set(TRUE);
2053 /* Set $^X early so that it can be used for relocatable paths in @INC */
2054 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2055 assert (!TAINT_get);
2060 #if defined(USE_SITECUSTOMIZE)
2062 /* The games with local $! are to avoid setting errno if there is no
2063 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2064 ie a q() operator with a NUL byte as a the delimiter. This avoids
2065 problems with pathnames containing (say) ' */
2066 # ifdef PERL_IS_MINIPERL
2067 AV *const inc = GvAV(PL_incgv);
2068 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2071 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2072 it should be reported immediately as a build failure. */
2073 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2075 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2080 /* SITELIB_EXP is a function call on Win32. */
2081 const char *const raw_sitelib = SITELIB_EXP;
2083 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2084 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2085 INCPUSH_CAN_RELOCATE);
2086 const char *const sitelib = SvPVX(sitelib_sv);
2087 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2089 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2092 assert (SvREFCNT(sitelib_sv) == 1);
2093 SvREFCNT_dec(sitelib_sv);
2100 scriptname = argv[0];
2103 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2105 else if (scriptname == NULL) {
2107 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2113 assert (!TAINT_get);
2117 bool suidscript = FALSE;
2119 rsfp = open_script(scriptname, dosearch, &suidscript);
2121 rsfp = PerlIO_stdin();
2122 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2125 validate_suid(rsfp);
2128 # if defined(SIGCHLD) || defined(SIGCLD)
2131 # define SIGCHLD SIGCLD
2133 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2134 if (sigstate == (Sighandler_t) SIG_IGN) {
2135 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2136 "Can't ignore signal CHLD, forcing to default");
2137 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2145 /* This will croak if suidscript is true, as -x cannot be used with
2147 forbid_setid('x', suidscript);
2148 /* Hence you can't get here if suidscript is true */
2150 linestr_sv = newSV_type(SVt_PV);
2151 lex_start_flags |= LEX_START_COPIED;
2152 find_beginning(linestr_sv, rsfp);
2153 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2154 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2158 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2159 CvUNIQUE_on(PL_compcv);
2161 CvPADLIST(PL_compcv) = pad_new(0);
2163 PL_isarev = newHV();
2166 boot_core_UNIVERSAL();
2168 newXS("Internals::V", S_Internals_V, __FILE__);
2171 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2173 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2179 # ifdef HAS_SOCKS5_INIT
2180 socks5_init(argv[0]);
2186 init_predump_symbols();
2187 /* init_postdump_symbols not currently designed to be called */
2188 /* more than once (ENV isn't cleared first, for example) */
2189 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2191 init_postdump_symbols(argc,argv,env);
2193 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2194 * or explicitly in some platforms.
2195 * locale.c:Perl_init_i18nl10n() if the environment
2196 * look like the user wants to use UTF-8. */
2197 #if defined(__SYMBIAN32__)
2198 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2200 # ifndef PERL_IS_MINIPERL
2202 /* Requires init_predump_symbols(). */
2203 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2208 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2209 * and the default open disciplines. */
2210 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2211 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2213 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2214 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2215 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2217 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2218 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2219 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2221 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2222 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2223 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2225 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2226 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2229 sv_setpvs(sv, ":utf8\0:utf8");
2231 sv_setpvs(sv, ":utf8\0");
2234 sv_setpvs(sv, "\0:utf8");
2243 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2244 if (strEQ(s, "unsafe"))
2245 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2246 else if (strEQ(s, "safe"))
2247 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2249 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2256 if (!TAINTING_get &&
2257 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2261 PL_xmlfp = PerlIO_stdout();
2263 PL_xmlfp = PerlIO_open(s, "w");
2265 Perl_croak(aTHX_ "Can't open %s", s);
2267 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2273 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2274 PL_madskills = atoi(s);
2275 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2280 lex_start(linestr_sv, rsfp, lex_start_flags);
2281 SvREFCNT_dec(linestr_sv);
2283 PL_subname = newSVpvs("main");
2285 if (add_read_e_script)
2286 filter_add(read_e_script, NULL);
2288 /* now parse the script */
2290 SETERRNO(0,SS_NORMAL);
2291 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2293 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2295 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2299 CopLINE_set(PL_curcop, 0);
2300 SET_CURSTASH(PL_defstash);
2302 SvREFCNT_dec(PL_e_script);
2310 SAVECOPFILE(PL_curcop);
2311 SAVECOPLINE(PL_curcop);
2312 gv_check(PL_defstash);
2321 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2322 dump_mstats("after compilation:");
2327 PL_restartjmpenv = NULL;
2333 =for apidoc perl_run
2335 Tells a Perl interpreter to run. See L<perlembed>.
2348 PERL_ARGS_ASSERT_PERL_RUN;
2349 #ifndef MULTIPLICITY
2350 PERL_UNUSED_ARG(my_perl);
2353 oldscope = PL_scopestack_ix;
2361 cxstack_ix = -1; /* start context stack again */
2363 case 0: /* normal completion */
2367 case 2: /* my_exit() */
2368 while (PL_scopestack_ix > oldscope)
2371 SET_CURSTASH(PL_defstash);
2372 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2373 PL_endav && !PL_minus_c) {
2374 PERL_SET_PHASE(PERL_PHASE_END);
2375 call_list(oldscope, PL_endav);
2378 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2379 dump_mstats("after execution: ");
2385 POPSTACK_TO(PL_mainstack);
2388 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2399 S_run_body(pTHX_ I32 oldscope)
2402 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2403 PL_sawampersand ? "Enabling" : "Omitting",
2404 (unsigned int)(PL_sawampersand)));
2406 if (!PL_restartop) {
2410 exit(0); /* less likely to core dump than my_exit(0) */
2414 if (DEBUG_x_TEST || DEBUG_B_TEST)
2415 dump_all_perl(!DEBUG_B_TEST);
2417 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2421 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2424 if (PERLDB_SINGLE && PL_DBsingle)
2425 sv_setiv(PL_DBsingle, 1);
2427 PERL_SET_PHASE(PERL_PHASE_INIT);
2428 call_list(oldscope, PL_initav);
2430 #ifdef PERL_DEBUG_READONLY_OPS
2431 if (PL_main_root && PL_main_root->op_slabbed)
2432 Slab_to_ro(OpSLAB(PL_main_root));
2438 PERL_SET_PHASE(PERL_PHASE_RUN);
2441 PL_restartjmpenv = NULL;
2442 PL_op = PL_restartop;
2446 else if (PL_main_start) {
2447 CvDEPTH(PL_main_cv) = 1;
2448 PL_op = PL_main_start;
2452 assert(0); /* NOTREACHED */
2456 =head1 SV Manipulation Functions
2458 =for apidoc p||get_sv
2460 Returns the SV of the specified Perl scalar. C<flags> are passed to
2461 C<gv_fetchpv>. If C<GV_ADD> is set and the
2462 Perl variable does not exist then it will be created. If C<flags> is zero
2463 and the variable does not exist then NULL is returned.
2469 Perl_get_sv(pTHX_ const char *name, I32 flags)
2473 PERL_ARGS_ASSERT_GET_SV;
2475 gv = gv_fetchpv(name, flags, SVt_PV);
2482 =head1 Array Manipulation Functions
2484 =for apidoc p||get_av
2486 Returns the AV of the specified Perl global or package array with the given
2487 name (so it won't work on lexical variables). C<flags> are passed
2488 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2489 Perl variable does not exist then it will be created. If C<flags> is zero
2490 and the variable does not exist then NULL is returned.
2492 Perl equivalent: C<@{"$name"}>.
2498 Perl_get_av(pTHX_ const char *name, I32 flags)
2500 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2502 PERL_ARGS_ASSERT_GET_AV;
2512 =head1 Hash Manipulation Functions
2514 =for apidoc p||get_hv
2516 Returns the HV of the specified Perl hash. C<flags> are passed to
2517 C<gv_fetchpv>. If C<GV_ADD> is set and the
2518 Perl variable does not exist then it will be created. If C<flags> is zero
2519 and the variable does not exist then NULL is returned.
2525 Perl_get_hv(pTHX_ const char *name, I32 flags)
2527 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2529 PERL_ARGS_ASSERT_GET_HV;
2539 =head1 CV Manipulation Functions
2541 =for apidoc p||get_cvn_flags
2543 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2544 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2545 exist then it will be declared (which has the same effect as saying
2546 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2547 then NULL is returned.
2549 =for apidoc p||get_cv
2551 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2557 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2559 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2561 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2563 /* XXX this is probably not what they think they're getting.
2564 * It has the same effect as "sub name;", i.e. just a forward
2566 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2567 return newSTUB(gv,0);
2574 /* Nothing in core calls this now, but we can't replace it with a macro and
2575 move it to mathoms.c as a macro would evaluate name twice. */
2577 Perl_get_cv(pTHX_ const char *name, I32 flags)
2579 PERL_ARGS_ASSERT_GET_CV;
2581 return get_cvn_flags(name, strlen(name), flags);
2584 /* Be sure to refetch the stack pointer after calling these routines. */
2588 =head1 Callback Functions
2590 =for apidoc p||call_argv
2592 Performs a callback to the specified named and package-scoped Perl subroutine
2593 with C<argv> (a NULL-terminated array of strings) as arguments. See
2596 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2602 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2604 /* See G_* flags in cop.h */
2605 /* null terminated arg list */
2610 PERL_ARGS_ASSERT_CALL_ARGV;
2615 mXPUSHs(newSVpv(*argv,0));
2620 return call_pv(sub_name, flags);
2624 =for apidoc p||call_pv
2626 Performs a callback to the specified Perl sub. See L<perlcall>.
2632 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2633 /* name of the subroutine */
2634 /* See G_* flags in cop.h */
2636 PERL_ARGS_ASSERT_CALL_PV;
2638 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2642 =for apidoc p||call_method
2644 Performs a callback to the specified Perl method. The blessed object must
2645 be on the stack. See L<perlcall>.
2651 Perl_call_method(pTHX_ const char *methname, I32 flags)
2652 /* name of the subroutine */
2653 /* See G_* flags in cop.h */
2657 PERL_ARGS_ASSERT_CALL_METHOD;
2659 len = strlen(methname);
2660 sv = flags & G_METHOD_NAMED
2661 ? sv_2mortal(newSVpvn_share(methname, len,0))
2662 : newSVpvn_flags(methname, len, SVs_TEMP);
2664 return call_sv(sv, flags | G_METHOD);
2667 /* May be called with any of a CV, a GV, or an SV containing the name. */
2669 =for apidoc p||call_sv
2671 Performs a callback to the Perl sub whose name is in the SV. See
2678 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2679 /* See G_* flags in cop.h */
2682 LOGOP myop; /* fake syntax tree node */
2688 bool oldcatch = CATCH_GET;
2690 OP* const oldop = PL_op;
2693 PERL_ARGS_ASSERT_CALL_SV;
2695 if (flags & G_DISCARD) {
2699 if (!(flags & G_WANT)) {
2700 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2705 Zero(&myop, 1, LOGOP);
2706 if (!(flags & G_NOARGS))
2707 myop.op_flags |= OPf_STACKED;
2708 myop.op_flags |= OP_GIMME_REVERSE(flags);
2712 EXTEND(PL_stack_sp, 1);
2713 if (!(flags & G_METHOD_NAMED))
2714 *++PL_stack_sp = sv;
2716 oldscope = PL_scopestack_ix;
2718 if (PERLDB_SUB && PL_curstash != PL_debstash
2719 /* Handle first BEGIN of -d. */
2720 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2721 /* Try harder, since this may have been a sighandler, thus
2722 * curstash may be meaningless. */
2723 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2724 && !(flags & G_NODEBUG))
2725 myop.op_private |= OPpENTERSUB_DB;
2727 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2728 if ( flags & G_METHOD_NAMED ) {
2729 Zero(&method_svop, 1, SVOP);
2730 method_svop.op_next = (OP*)&myop;
2731 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2732 method_svop.op_type = OP_METHOD_NAMED;
2733 method_svop.op_sv = sv;
2734 PL_op = (OP*)&method_svop;
2736 Zero(&method_unop, 1, UNOP);
2737 method_unop.op_next = (OP*)&myop;
2738 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2739 method_unop.op_type = OP_METHOD;
2740 PL_op = (OP*)&method_unop;
2742 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2743 myop.op_type = OP_ENTERSUB;
2747 if (!(flags & G_EVAL)) {
2749 CALL_BODY_SUB((OP*)&myop);
2750 retval = PL_stack_sp - (PL_stack_base + oldmark);
2751 CATCH_SET(oldcatch);
2754 myop.op_other = (OP*)&myop;
2756 create_eval_scope(flags|G_FAKINGEVAL);
2764 CALL_BODY_SUB((OP*)&myop);
2765 retval = PL_stack_sp - (PL_stack_base + oldmark);
2766 if (!(flags & G_KEEPERR)) {
2774 /* my_exit() was called */
2775 SET_CURSTASH(PL_defstash);
2779 assert(0); /* NOTREACHED */
2782 PL_restartjmpenv = NULL;
2783 PL_op = PL_restartop;
2787 PL_stack_sp = PL_stack_base + oldmark;
2788 if ((flags & G_WANT) == G_ARRAY)
2792 *++PL_stack_sp = &PL_sv_undef;
2797 if (PL_scopestack_ix > oldscope)
2798 delete_eval_scope();
2802 if (flags & G_DISCARD) {
2803 PL_stack_sp = PL_stack_base + oldmark;
2812 /* Eval a string. The G_EVAL flag is always assumed. */
2815 =for apidoc p||eval_sv
2817 Tells Perl to C<eval> the string in the SV. It supports the same flags
2818 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2824 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2826 /* See G_* flags in cop.h */
2830 UNOP myop; /* fake syntax tree node */
2831 VOL I32 oldmark = SP - PL_stack_base;
2834 OP* const oldop = PL_op;
2837 PERL_ARGS_ASSERT_EVAL_SV;
2839 if (flags & G_DISCARD) {
2846 Zero(&myop, 1, UNOP);
2847 EXTEND(PL_stack_sp, 1);
2848 *++PL_stack_sp = sv;
2850 if (!(flags & G_NOARGS))
2851 myop.op_flags = OPf_STACKED;
2852 myop.op_type = OP_ENTEREVAL;
2853 myop.op_flags |= OP_GIMME_REVERSE(flags);
2854 if (flags & G_KEEPERR)
2855 myop.op_flags |= OPf_SPECIAL;
2857 if (flags & G_RE_REPARSING)
2858 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2860 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2861 * before a PUSHEVAL, which corrupts the stack after a croak */
2862 TAINT_PROPER("eval_sv()");
2868 if (PL_op == (OP*)(&myop)) {
2869 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2871 goto fail; /* failed in compilation */
2874 retval = PL_stack_sp - (PL_stack_base + oldmark);
2875 if (!(flags & G_KEEPERR)) {
2883 /* my_exit() was called */
2884 SET_CURSTASH(PL_defstash);
2888 assert(0); /* NOTREACHED */
2891 PL_restartjmpenv = NULL;
2892 PL_op = PL_restartop;
2897 PL_stack_sp = PL_stack_base + oldmark;
2898 if ((flags & G_WANT) == G_ARRAY)
2902 *++PL_stack_sp = &PL_sv_undef;
2908 if (flags & G_DISCARD) {
2909 PL_stack_sp = PL_stack_base + oldmark;
2919 =for apidoc p||eval_pv
2921 Tells Perl to C<eval> the given string and return an SV* result.
2927 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2930 SV* sv = newSVpv(p, 0);
2932 PERL_ARGS_ASSERT_EVAL_PV;
2934 eval_sv(sv, G_SCALAR);
2943 /* just check empty string or undef? */
2944 if (croak_on_error) {
2945 SV * const errsv = ERRSV;
2946 if(SvTRUE_NN(errsv))
2947 /* replace with croak_sv? */
2948 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2954 /* Require a module. */
2957 =head1 Embedding Functions
2959 =for apidoc p||require_pv
2961 Tells Perl to C<require> the file named by the string argument. It is
2962 analogous to the Perl code C<eval "require '$file'">. It's even
2963 implemented that way; consider using load_module instead.
2968 Perl_require_pv(pTHX_ const char *pv)
2974 PERL_ARGS_ASSERT_REQUIRE_PV;
2976 PUSHSTACKi(PERLSI_REQUIRE);
2977 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2978 eval_sv(sv_2mortal(sv), G_DISCARD);
2983 S_usage(pTHX) /* XXX move this out into a module ? */
2985 /* This message really ought to be max 23 lines.
2986 * Removed -h because the user already knows that option. Others? */
2988 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2989 minimum of 509 character string literals. */
2990 static const char * const usage_msg[] = {
2991 " -0[octal] specify record separator (\\0, if no argument)\n"
2992 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2993 " -C[number/list] enables the listed Unicode features\n"
2994 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2995 " -d[:debugger] run program under debugger\n"
2996 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2997 " -e program one line of program (several -e's allowed, omit programfile)\n"
2998 " -E program like -e, but enables all optional features\n"
2999 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3000 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3001 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3002 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3003 " -l[octal] enable line ending processing, specifies line terminator\n"
3004 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3005 " -n assume \"while (<>) { ... }\" loop around program\n"
3006 " -p assume loop like -n but print line also, like sed\n"
3007 " -s enable rudimentary parsing for switches after programfile\n"
3008 " -S look for programfile using PATH environment variable\n",
3009 " -t enable tainting warnings\n"
3010 " -T enable tainting checks\n"
3011 " -u dump core after parsing program\n"
3012 " -U allow unsafe operations\n"
3013 " -v print version, patchlevel and license\n"
3014 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3015 " -w enable many useful warnings\n"
3016 " -W enable all warnings\n"
3017 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3018 " -X disable all warnings\n"
3020 "Run 'perldoc perl' for more help with Perl.\n\n",
3023 const char * const *p = usage_msg;
3024 PerlIO *out = PerlIO_stdout();
3027 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3030 PerlIO_puts(out, *p++);
3034 /* convert a string of -D options (or digits) into an int.
3035 * sets *s to point to the char after the options */
3039 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3041 static const char * const usage_msgd[] = {
3042 " Debugging flag values: (see also -d)\n"
3043 " p Tokenizing and parsing (with v, displays parse stack)\n"
3044 " s Stack snapshots (with v, displays all stacks)\n"
3045 " l Context (loop) stack processing\n"
3046 " t Trace execution\n"
3047 " o Method and overloading resolution\n",
3048 " c String/numeric conversions\n"
3049 " P Print profiling info, source file input state\n"
3050 " m Memory and SV allocation\n"
3051 " f Format processing\n"
3052 " r Regular expression parsing and execution\n"
3053 " x Syntax tree dump\n",
3054 " u Tainting checks\n"
3055 " H Hash dump -- usurps values()\n"
3056 " X Scratchpad allocation\n"
3058 " S Op slab allocation\n"
3060 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3061 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3062 " v Verbose: use in conjunction with other flags\n"
3063 " C Copy On Write\n"
3064 " A Consistency checks on internal structures\n"
3065 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3066 " M trace smart match resolution\n"
3067 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3068 " L trace some locale setting information--for Perl core development\n",
3073 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3076 /* if adding extra options, remember to update DEBUG_MASK */
3077 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3079 for (; isWORDCHAR(**s); (*s)++) {
3080 const char * const d = strchr(debopts,**s);
3082 i |= 1 << (d - debopts);
3083 else if (ckWARN_d(WARN_DEBUGGING))
3084 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3085 "invalid option -D%c, use -D'' to see choices\n", **s);
3088 else if (isDIGIT(**s)) {
3090 for (; isWORDCHAR(**s); (*s)++) ;
3092 else if (givehelp) {
3093 const char *const *p = usage_msgd;
3094 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3097 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3098 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3099 "-Dp not implemented on this platform\n");
3105 /* This routine handles any switches that can be given during run */
3108 Perl_moreswitches(pTHX_ const char *s)
3112 const char option = *s; /* used to remember option in -m/-M code */
3114 PERL_ARGS_ASSERT_MORESWITCHES;
3122 SvREFCNT_dec(PL_rs);
3123 if (s[1] == 'x' && s[2]) {
3124 const char *e = s+=2;
3130 flags = PERL_SCAN_SILENT_ILLDIGIT;
3131 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3132 if (s + numlen < e) {
3133 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3137 PL_rs = newSVpvs("");
3138 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3139 tmps = (U8*)SvPVX(PL_rs);
3140 uvchr_to_utf8(tmps, rschar);
3141 SvCUR_set(PL_rs, UNISKIP(rschar));
3146 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3147 if (rschar & ~((U8)~0))
3148 PL_rs = &PL_sv_undef;
3149 else if (!rschar && numlen >= 2)
3150 PL_rs = newSVpvs("");
3152 char ch = (char)rschar;
3153 PL_rs = newSVpvn(&ch, 1);
3156 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3161 PL_unicode = parse_unicode_opts( (const char **)&s );
3162 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3170 while (*s && !isSPACE(*s)) ++s;
3171 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3183 forbid_setid('d', FALSE);
3186 /* -dt indicates to the debugger that threads will be used */
3187 if (*s == 't' && !isWORDCHAR(s[1])) {
3189 my_setenv("PERL5DB_THREADED", "1");
3192 /* The following permits -d:Mod to accepts arguments following an =
3193 in the fashion that -MSome::Mod does. */
3194 if (*s == ':' || *s == '=') {
3201 sv = newSVpvs("no Devel::");
3203 sv = newSVpvs("use Devel::");
3207 end = s + strlen(s);
3209 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3210 while(isWORDCHAR(*s) || *s==':') ++s;
3212 sv_catpvn(sv, start, end - start);
3214 sv_catpvn(sv, start, s-start);
3215 /* Don't use NUL as q// delimiter here, this string goes in the
3217 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3220 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3224 PL_perldb = PERLDB_ALL;
3231 forbid_setid('D', FALSE);
3233 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3234 #else /* !DEBUGGING */
3235 if (ckWARN_d(WARN_DEBUGGING))
3236 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3237 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3238 for (s++; isWORDCHAR(*s); s++) ;
3245 Safefree(PL_inplace);
3246 #if defined(__CYGWIN__) /* do backup extension automagically */
3247 if (*(s+1) == '\0') {
3248 PL_inplace = savepvs(".bak");
3251 #endif /* __CYGWIN__ */
3253 const char * const start = ++s;
3254 while (*s && !isSPACE(*s))
3257 PL_inplace = savepvn(start, s - start);
3261 if (*s == '-') /* Additional switches on #! line. */
3265 case 'I': /* -I handled both here and in parse_body() */
3266 forbid_setid('I', FALSE);
3268 while (*s && isSPACE(*s))
3273 /* ignore trailing spaces (possibly followed by other switches) */
3275 for (e = p; *e && !isSPACE(*e); e++) ;
3279 } while (*p && *p != '-');
3281 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3287 Perl_croak(aTHX_ "No directory specified for -I");
3293 SvREFCNT_dec(PL_ors_sv);
3299 PL_ors_sv = newSVpvs("\n");
3300 numlen = 3 + (*s == '0');
3301 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3305 if (RsPARA(PL_rs)) {
3306 PL_ors_sv = newSVpvs("\n\n");
3309 PL_ors_sv = newSVsv(PL_rs);
3314 forbid_setid('M', FALSE); /* XXX ? */
3317 forbid_setid('m', FALSE); /* XXX ? */
3322 const char *use = "use ";
3324 /* -M-foo == 'no foo' */
3325 /* Leading space on " no " is deliberate, to make both
3326 possibilities the same length. */
3327 if (*s == '-') { use = " no "; ++s; }
3328 sv = newSVpvn(use,4);
3330 /* We allow -M'Module qw(Foo Bar)' */
3331 while(isWORDCHAR(*s) || *s==':') {
3340 Perl_croak(aTHX_ "Module name required with -%c option",
3343 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3344 "contains single ':'",
3345 (int)(s - start), start, option);
3346 end = s + strlen(s);
3348 sv_catpvn(sv, start, end - start);
3349 if (option == 'm') {
3351 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3352 sv_catpvs( sv, " ()");
3355 sv_catpvn(sv, start, s-start);
3356 /* Use NUL as q''-delimiter. */
3357 sv_catpvs(sv, " split(/,/,q\0");
3359 sv_catpvn(sv, s, end - s);
3360 sv_catpvs(sv, "\0)");
3363 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3366 Perl_croak(aTHX_ "Missing argument to -%c", option);
3377 forbid_setid('s', FALSE);
3378 PL_doswitches = TRUE;
3383 #if defined(SILENT_NO_TAINT_SUPPORT)
3384 /* silently ignore */
3385 #elif defined(NO_TAINT_SUPPORT)
3386 Perl_croak_nocontext("This perl was compiled without taint support. "
3387 "Cowardly refusing to run with -t or -T flags");
3395 PL_do_undump = TRUE;
3405 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3406 PL_dowarn |= G_WARN_ON;
3411 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3412 if (!specialWARN(PL_compiling.cop_warnings))
3413 PerlMemShared_free(PL_compiling.cop_warnings);
3414 PL_compiling.cop_warnings = pWARN_ALL ;
3418 PL_dowarn = G_WARN_ALL_OFF;
3419 if (!specialWARN(PL_compiling.cop_warnings))
3420 PerlMemShared_free(PL_compiling.cop_warnings);
3421 PL_compiling.cop_warnings = pWARN_NONE ;
3428 if (s[0] == '-') /* Additional switches on #! line. */
3433 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3439 #ifdef ALTERNATE_SHEBANG
3440 case 'S': /* OS/2 needs -S on "extproc" line. */
3443 case 'e': case 'f': case 'x': case 'E':
3444 #ifndef ALTERNATE_SHEBANG
3448 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3451 "Unrecognized switch: -%.1s (-h will show valid options)",s
3461 PerlIO * PIO_stdout;
3463 const char * const level_str = "v" PERL_VERSION_STRING;
3464 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3465 #ifdef PERL_PATCHNUM
3467 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3468 static const char num [] = PERL_PATCHNUM "*";
3470 static const char num [] = PERL_PATCHNUM;
3473 const STRLEN num_len = sizeof(num)-1;
3474 /* A very advanced compiler would fold away the strnEQ
3475 and this whole conditional, but most (all?) won't do it.
3476 SV level could also be replaced by with preprocessor
3479 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3480 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3481 of the interp so it might contain format characters
3483 level = newSVpvn(num, num_len);
3485 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3489 SV* level = newSVpvn(level_str, level_len);
3490 #endif /* #ifdef PERL_PATCHNUM */
3491 PIO_stdout = PerlIO_stdout();
3492 PerlIO_printf(PIO_stdout,
3493 "\nThis is perl " STRINGIFY(PERL_REVISION)
3494 ", version " STRINGIFY(PERL_VERSION)
3495 ", subversion " STRINGIFY(PERL_SUBVERSION)
3496 " (%"SVf") built for " ARCHNAME, level
3498 SvREFCNT_dec_NN(level);
3500 #if defined(LOCAL_PATCH_COUNT)
3501 if (LOCAL_PATCH_COUNT > 0)
3502 PerlIO_printf(PIO_stdout,
3503 "\n(with %d registered patch%s, "
3504 "see perl -V for more detail)",
3506 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3509 PerlIO_printf(PIO_stdout,
3510 "\n\nCopyright 1987-2014, Larry Wall\n");
3512 PerlIO_printf(PIO_stdout,
3513 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3516 PerlIO_printf(PIO_stdout,
3517 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3518 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3521 PerlIO_printf(PIO_stdout,
3522 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3523 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3526 PerlIO_printf(PIO_stdout,
3527 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3530 PerlIO_printf(PIO_stdout,
3531 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3534 PerlIO_printf(PIO_stdout,
3535 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3538 PerlIO_printf(PIO_stdout,
3539 "WINCE port by Rainer Keuchel, 2001-2002\n"
3540 "Built on " __DATE__ " " __TIME__ "\n\n");
3543 #ifdef __SYMBIAN32__
3544 PerlIO_printf(PIO_stdout,
3545 "Symbian port by Nokia, 2004-2005\n");
3547 #ifdef BINARY_BUILD_NOTICE
3548 BINARY_BUILD_NOTICE;
3550 PerlIO_printf(PIO_stdout,
3552 Perl may be copied only under the terms of either the Artistic License or the\n\
3553 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3554 Complete documentation for Perl, including FAQ lists, should be found on\n\
3555 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3556 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3560 /* compliments of Tom Christiansen */
3562 /* unexec() can be found in the Gnu emacs distribution */
3563 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3566 #include <lib$routines.h>
3570 Perl_my_unexec(pTHX)
3572 PERL_UNUSED_CONTEXT;
3574 SV * prog = newSVpv(BIN_EXP, 0);
3575 SV * file = newSVpv(PL_origfilename, 0);
3579 sv_catpvs(prog, "/perl");
3580 sv_catpvs(file, ".perldump");
3582 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3583 /* unexec prints msg to stderr in case of failure */
3584 PerlProc_exit(status);
3587 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3588 # elif defined(WIN32) || defined(__CYGWIN__)
3589 Perl_croak(aTHX_ "dump is not supported");
3591 ABORT(); /* for use with undump */
3596 /* initialize curinterp */
3602 # define PERLVAR(prefix,var,type)
3603 # define PERLVARA(prefix,var,n,type)
3604 # if defined(PERL_IMPLICIT_CONTEXT)
3605 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3606 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3608 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3609 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3611 # include "intrpvar.h"
3617 # define PERLVAR(prefix,var,type)
3618 # define PERLVARA(prefix,var,n,type)
3619 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3620 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3621 # include "intrpvar.h"
3631 S_init_main_stash(pTHX)
3636 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3637 /* We know that the string "main" will be in the global shared string
3638 table, so it's a small saving to use it rather than allocate another
3640 PL_curstname = newSVpvs_share("main");
3641 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3642 /* If we hadn't caused another reference to "main" to be in the shared
3643 string table above, then it would be worth reordering these two,
3644 because otherwise all we do is delete "main" from it as a consequence
3645 of the SvREFCNT_dec, only to add it again with hv_name_set */
3646 SvREFCNT_dec(GvHV(gv));
3647 hv_name_set(PL_defstash, "main", 4, 0);
3648 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3650 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3652 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3653 GvMULTI_on(PL_incgv);
3654 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3655 SvREFCNT_inc_simple_void(PL_hintgv);
3656 GvMULTI_on(PL_hintgv);
3657 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3658 SvREFCNT_inc_simple_void(PL_defgv);
3659 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3660 SvREFCNT_inc_simple_void(PL_errgv);
3661 GvMULTI_on(PL_errgv);
3662 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3663 SvREFCNT_inc_simple_void(PL_replgv);
3664 GvMULTI_on(PL_replgv);
3665 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3666 #ifdef PERL_DONT_CREATE_GVSV
3669 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3671 SET_CURSTASH(PL_defstash);
3672 CopSTASH_set(&PL_compiling, PL_defstash);
3673 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3674 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3676 /* We must init $/ before switches are processed. */
3677 sv_setpvs(get_sv("/", GV_ADD), "\n");
3681 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3684 PerlIO *rsfp = NULL;
3688 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3691 PL_origfilename = savepvs("-e");
3694 /* if find_script() returns, it returns a malloc()-ed value */
3695 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3697 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3698 const char *s = scriptname + 8;
3704 * Tell apart "normal" usage of fdscript, e.g.
3705 * with bash on FreeBSD:
3706 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3707 * from usage in suidperl.
3708 * Does any "normal" usage leave garbage after the number???
3709 * Is it a mistake to use a similar /dev/fd/ construct for
3714 * Be supersafe and do some sanity-checks.
3715 * Still, can we be sure we got the right thing?
3718 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3721 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3723 scriptname = savepv(s + 1);
3724 Safefree(PL_origfilename);
3725 PL_origfilename = (char *)scriptname;
3730 CopFILE_free(PL_curcop);
3731 CopFILE_set(PL_curcop, PL_origfilename);
3732 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3733 scriptname = (char *)"";
3734 if (fdscript >= 0) {
3735 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3737 else if (!*scriptname) {
3738 forbid_setid(0, *suidscript);
3742 #ifdef FAKE_BIT_BUCKET
3743 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3744 * is called) and still have the "-e" work. (Believe it or not,
3745 * a /dev/null is required for the "-e" to work because source
3746 * filter magic is used to implement it. ) This is *not* a general
3747 * replacement for a /dev/null. What we do here is create a temp
3748 * file (an empty file), open up that as the script, and then
3749 * immediately close and unlink it. Close enough for jazz. */
3750 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3751 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3752 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3753 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3754 FAKE_BIT_BUCKET_TEMPLATE
3756 const char * const err = "Failed to create a fake bit bucket";
3757 if (strEQ(scriptname, BIT_BUCKET)) {
3758 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3759 int tmpfd = mkstemp(tmpname);
3761 scriptname = tmpname;
3764 Perl_croak(aTHX_ err);
3767 scriptname = mktemp(tmpname);
3769 Perl_croak(aTHX_ err);
3774 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3775 #ifdef FAKE_BIT_BUCKET
3776 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3777 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3778 && strlen(scriptname) == sizeof(tmpname) - 1) {
3781 scriptname = BIT_BUCKET;
3785 /* PSz 16 Sep 03 Keep neat error message */
3787 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3789 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3790 CopFILE(PL_curcop), Strerror(errno));
3792 #if defined(HAS_FCNTL) && defined(F_SETFD)
3793 /* ensure close-on-exec */
3794 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3797 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3798 && S_ISDIR(tmpstatbuf.st_mode))
3799 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3807 * I_SYSSTATVFS HAS_FSTATVFS
3809 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3810 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3811 * here so that metaconfig picks them up. */
3814 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3815 /* Don't even need this function. */
3818 S_validate_suid(pTHX_ PerlIO *rsfp)
3820 const Uid_t my_uid = PerlProc_getuid();
3821 const Uid_t my_euid = PerlProc_geteuid();
3822 const Gid_t my_gid = PerlProc_getgid();
3823 const Gid_t my_egid = PerlProc_getegid();
3825 PERL_ARGS_ASSERT_VALIDATE_SUID;
3827 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3830 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3831 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3833 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3836 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3837 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3838 /* not set-id, must be wrapped */
3841 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3844 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3850 PERL_ARGS_ASSERT_FIND_BEGINNING;
3852 /* skip forward in input to the real script? */
3855 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3856 Perl_croak(aTHX_ "No Perl script found in input\n");
3858 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3859 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3860 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3862 while (*s == ' ' || *s == '\t') s++;
3864 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3865 || s2[-1] == '_') s2--;
3866 if (strnEQ(s2-4,"perl",4))
3867 while ((s = moreswitches(s)))
3876 /* no need to do anything here any more if we don't
3878 #ifndef NO_TAINT_SUPPORT
3880 const Uid_t my_uid = PerlProc_getuid();
3881 const Uid_t my_euid = PerlProc_geteuid();
3882 const Gid_t my_gid = PerlProc_getgid();
3883 const Gid_t my_egid = PerlProc_getegid();
3885 /* Should not happen: */
3886 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3887 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3891 * Should go by suidscript, not uid!=euid: why disallow
3892 * system("ls") in scripts run from setuid things?
3893 * Or, is this run before we check arguments and set suidscript?
3894 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3895 * (We never have suidscript, can we be sure to have fdscript?)
3896 * Or must then go by UID checks? See comments in forbid_setid also.
3900 /* This is used very early in the lifetime of the program,
3901 * before even the options are parsed, so PL_tainting has
3902 * not been initialized properly. */
3904 Perl_doing_taint(int argc, char *argv[], char *envp[])
3906 #ifndef PERL_IMPLICIT_SYS
3907 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3908 * before we have an interpreter-- and the whole point of this
3909 * function is to be called at such an early stage. If you are on
3910 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3911 * "tainted because running with altered effective ids', you'll
3912 * have to add your own checks somewhere in here. The two most
3913 * known samples of 'implicitness' are Win32 and NetWare, neither
3914 * of which has much of concept of 'uids'. */
3915 Uid_t uid = PerlProc_getuid();
3916 Uid_t euid = PerlProc_geteuid();
3917 Gid_t gid = PerlProc_getgid();
3918 Gid_t egid = PerlProc_getegid();
3925 if (uid && (euid != uid || egid != gid))
3927 #endif /* !PERL_IMPLICIT_SYS */
3928 /* This is a really primitive check; environment gets ignored only
3929 * if -T are the first chars together; otherwise one gets
3930 * "Too late" message. */
3931 if ( argc > 1 && argv[1][0] == '-'
3932 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3937 /* Passing the flag as a single char rather than a string is a slight space
3938 optimisation. The only message that isn't /^-.$/ is
3939 "program input from stdin", which is substituted in place of '\0', which
3940 could never be a command line flag. */
3942 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3945 char string[3] = "-x";
3946 const char *message = "program input from stdin";
3953 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3954 if (PerlProc_getuid() != PerlProc_geteuid())
3955 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3956 if (PerlProc_getgid() != PerlProc_getegid())
3957 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3958 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3960 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3964 Perl_init_dbargs(pTHX)
3966 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3971 /* Someone has already created it.
3972 It might have entries, and if we just turn off AvREAL(), they will
3973 "leak" until global destruction. */
3975 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3976 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3978 AvREIFY_only(PL_dbargs);
3982 Perl_init_debugger(pTHX)
3985 HV * const ostash = PL_curstash;
3987 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3989 Perl_init_dbargs(aTHX);
3990 PL_DBgv = MUTABLE_GV(
3991 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3993 PL_DBline = MUTABLE_GV(
3994 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3996 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3997 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3999 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4000 if (!SvIOK(PL_DBsingle))
4001 sv_setiv(PL_DBsingle, 0);
4002 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4003 if (!SvIOK(PL_DBtrace))
4004 sv_setiv(PL_DBtrace, 0);
4005 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4006 if (!SvIOK(PL_DBsignal))
4007 sv_setiv(PL_DBsignal, 0);
4008 SvREFCNT_dec(PL_curstash);
4009 PL_curstash = ostash;
4012 #ifndef STRESS_REALLOC
4013 #define REASONABLE(size) (size)
4014 #define REASONABLE_but_at_least(size,min) (size)
4016 #define REASONABLE(size) (1) /* unreasonable */
4017 #define REASONABLE_but_at_least(size,min) (min)
4021 Perl_init_stacks(pTHX)
4024 /* start with 128-item stack and 8K cxstack */
4025 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4026 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4027 PL_curstackinfo->si_type = PERLSI_MAIN;
4028 PL_curstack = PL_curstackinfo->si_stack;
4029 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4031 PL_stack_base = AvARRAY(PL_curstack);
4032 PL_stack_sp = PL_stack_base;
4033 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4035 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4038 PL_tmps_max = REASONABLE(128);
4040 Newx(PL_markstack,REASONABLE(32),I32);
4041 PL_markstack_ptr = PL_markstack;
4042 PL_markstack_max = PL_markstack + REASONABLE(32);
4046 Newx(PL_scopestack,REASONABLE(32),I32);
4048 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4050 PL_scopestack_ix = 0;
4051 PL_scopestack_max = REASONABLE(32);
4053 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4054 PL_savestack_ix = 0;
4055 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4064 while (PL_curstackinfo->si_next)
4065 PL_curstackinfo = PL_curstackinfo->si_next;
4066 while (PL_curstackinfo) {
4067 PERL_SI *p = PL_curstackinfo->si_prev;
4068 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4069 Safefree(PL_curstackinfo->si_cxstack);
4070 Safefree(PL_curstackinfo);
4071 PL_curstackinfo = p;
4073 Safefree(PL_tmps_stack);
4074 Safefree(PL_markstack);
4075 Safefree(PL_scopestack);
4077 Safefree(PL_scopestack_name);
4079 Safefree(PL_savestack);
4083 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4085 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4086 AV *const isa = GvAVn(gv);
4089 PERL_ARGS_ASSERT_POPULATE_ISA;
4091 if(AvFILLp(isa) != -1)
4094 /* NOTE: No support for tied ISA */
4096 va_start(args, len);
4098 const char *const parent = va_arg(args, const char*);
4103 parent_len = va_arg(args, size_t);
4105 /* Arguments are supplied with a trailing :: */
4106 assert(parent_len > 2);
4107 assert(parent[parent_len - 1] == ':');
4108 assert(parent[parent_len - 2] == ':');
4109 av_push(isa, newSVpvn(parent, parent_len - 2));
4110 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4117 S_init_predump_symbols(pTHX)
4123 sv_setpvs(get_sv("\"", GV_ADD), " ");
4124 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4127 /* Historically, PVIOs were blessed into IO::Handle, unless
4128 FileHandle was loaded, in which case they were blessed into
4129 that. Action at a distance.
4130 However, if we simply bless into IO::Handle, we break code
4131 that assumes that PVIOs will have (among others) a seek
4132 method. IO::File inherits from IO::Handle and IO::Seekable,
4133 and provides the needed methods. But if we simply bless into
4134 it, then we break code that assumed that by loading
4135 IO::Handle, *it* would work.
4136 So a compromise is to set up the correct @IO::File::ISA,
4137 so that code that does C<use IO::Handle>; will still work.
4140 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4141 STR_WITH_LEN("IO::Handle::"),
4142 STR_WITH_LEN("IO::Seekable::"),
4143 STR_WITH_LEN("Exporter::"),
4146 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4147 GvMULTI_on(PL_stdingv);
4148 io = GvIOp(PL_stdingv);
4149 IoTYPE(io) = IoTYPE_RDONLY;
4150 IoIFP(io) = PerlIO_stdin();
4151 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4153 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4155 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4158 IoTYPE(io) = IoTYPE_WRONLY;
4159 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4161 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4163 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4165 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4166 GvMULTI_on(PL_stderrgv);
4167 io = GvIOp(PL_stderrgv);
4168 IoTYPE(io) = IoTYPE_WRONLY;
4169 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4170 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4172 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4174 PL_statname = newSVpvs(""); /* last filename we did stat on */
4178 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4182 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4184 argc--,argv++; /* skip name of script */
4185 if (PL_doswitches) {
4186 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4190 if (argv[0][1] == '-' && !argv[0][2]) {
4194 if ((s = strchr(argv[0], '='))) {
4195 const char *const start_name = argv[0] + 1;
4196 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4197 TRUE, SVt_PV)), s + 1);
4200 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4203 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4204 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4205 GvMULTI_on(PL_argvgv);
4206 av_clear(GvAVn(PL_argvgv));
4207 for (; argc > 0; argc--,argv++) {
4208 SV * const sv = newSVpv(argv[0],0);
4209 av_push(GvAV(PL_argvgv),sv);
4210 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4211 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4214 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4215 (void)sv_utf8_decode(sv);
4219 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4220 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4221 "-i used with no filenames on the command line, "
4222 "reading from STDIN");
4226 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4231 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4233 PL_toptarget = newSV_type(SVt_PVIV);
4234 sv_setpvs(PL_toptarget, "");
4235 PL_bodytarget = newSV_type(SVt_PVIV);
4236 sv_setpvs(PL_bodytarget, "");
4237 PL_formtarget = PL_bodytarget;
4241 init_argv_symbols(argc,argv);
4243 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4244 sv_setpv(GvSV(tmpgv),PL_origfilename);
4246 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4248 bool env_is_not_environ;
4249 SvREFCNT_inc_simple_void_NN(PL_envgv);
4250 GvMULTI_on(PL_envgv);
4251 hv = GvHVn(PL_envgv);
4252 hv_magic(hv, NULL, PERL_MAGIC_env);
4254 #ifdef USE_ENVIRON_ARRAY
4255 /* Note that if the supplied env parameter is actually a copy
4256 of the global environ then it may now point to free'd memory
4257 if the environment has been modified since. To avoid this
4258 problem we treat env==NULL as meaning 'use the default'
4262 env_is_not_environ = env != environ;
4263 if (env_is_not_environ
4264 # ifdef USE_ITHREADS
4265 && PL_curinterp == aTHX
4274 for (; *env; env++) {
4277 if (!(s = strchr(old_var,'=')) || s == old_var)
4280 #if defined(MSDOS) && !defined(DJGPP)
4282 (void)strupr(old_var);
4285 sv = newSVpv(s+1, 0);
4286 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4287 if (env_is_not_environ)
4291 #endif /* USE_ENVIRON_ARRAY */
4292 #endif /* !PERL_MICRO */
4296 /* touch @F array to prevent spurious warnings 20020415 MJD */
4298 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4303 S_init_perllib(pTHX)
4307 const char *perl5lib = NULL;
4310 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4314 if (!TAINTING_get) {
4316 perl5lib = PerlEnv_getenv("PERL5LIB");
4318 * It isn't possible to delete an environment variable with
4319 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4320 * case we treat PERL5LIB as undefined if it has a zero-length value.
4322 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4323 if (perl5lib && *perl5lib != '\0')
4327 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4329 s = PerlEnv_getenv("PERLLIB");
4331 incpush_use_sep(s, 0, 0);
4334 /* Treat PERL5?LIB as a possible search list logical name -- the
4335 * "natural" VMS idiom for a Unix path string. We allow each
4336 * element to be a set of |-separated directories for compatibility.
4340 if (my_trnlnm("PERL5LIB",buf,0))
4342 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4343 } while (my_trnlnm("PERL5LIB",buf,++idx));
4345 while (my_trnlnm("PERLLIB",buf,idx++))
4346 incpush_use_sep(buf, 0, 0);
4351 #ifndef PERL_IS_MINIPERL
4352 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4353 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4355 /* Use the ~-expanded versions of APPLLIB (undocumented),
4356 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4359 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4360 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4364 /* sitearch is always relative to sitelib on Windows for
4365 * DLL-based path intuition to work correctly */
4366 # if !defined(WIN32)
4367 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4368 INCPUSH_CAN_RELOCATE);
4374 /* this picks up sitearch as well */
4375 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4377 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4379 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4383 #ifdef PERL_VENDORARCH_EXP
4384 /* vendorarch is always relative to vendorlib on Windows for
4385 * DLL-based path intuition to work correctly */
4386 # if !defined(WIN32)
4387 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4388 INCPUSH_CAN_RELOCATE);
4392 #ifdef PERL_VENDORLIB_EXP
4394 /* this picks up vendorarch as well */
4395 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4397 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4399 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4400 INCPUSH_CAN_RELOCATE);
4405 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4409 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4413 s = win32_get_privlib(PERL_FS_VERSION, &len);
4415 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4418 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4420 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4424 #ifdef PERL_OTHERLIBDIRS
4425 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4426 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4427 |INCPUSH_CAN_RELOCATE);
4430 if (!TAINTING_get) {
4433 * It isn't possible to delete an environment variable with
4434 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4435 * case we treat PERL5LIB as undefined if it has a zero-length value.
4437 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4438 if (perl5lib && *perl5lib != '\0')
4442 incpush_use_sep(perl5lib, 0,
4443 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4445 /* Treat PERL5?LIB as a possible search list logical name -- the
4446 * "natural" VMS idiom for a Unix path string. We allow each
4447 * element to be a set of |-separated directories for compatibility.
4451 if (my_trnlnm("PERL5LIB",buf,0))
4453 incpush_use_sep(buf, 0,
4454 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4455 } while (my_trnlnm("PERL5LIB",buf,++idx));
4459 /* Use the ~-expanded versions of APPLLIB (undocumented),
4460 SITELIB and VENDORLIB for older versions
4463 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4464 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4467 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4468 /* Search for version-specific dirs below here */
4469 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4470 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4474 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4475 /* Search for version-specific dirs below here */
4476 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4477 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4480 #ifdef PERL_OTHERLIBDIRS
4481 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4482 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4483 |INCPUSH_CAN_RELOCATE);
4485 #endif /* !PERL_IS_MINIPERL */
4488 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4491 #if defined(DOSISH) || defined(__SYMBIAN32__)
4492 # define PERLLIB_SEP ';'
4495 # define PERLLIB_SEP '|'
4497 # define PERLLIB_SEP ':'
4500 #ifndef PERLLIB_MANGLE
4501 # define PERLLIB_MANGLE(s,n) (s)
4504 #ifndef PERL_IS_MINIPERL
4505 /* Push a directory onto @INC if it exists.
4506 Generate a new SV if we do this, to save needing to copy the SV we push
4509 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4514 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4516 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4517 S_ISDIR(tmpstatbuf.st_mode)) {
4519 dir = newSVsv(stem);
4521 /* Truncate dir back to stem. */
4522 SvCUR_set(dir, SvCUR(stem));
4529 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4531 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4534 PERL_ARGS_ASSERT_MAYBERELOCATE;
4537 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4538 defined to so something (in os2/os2.c), but the code has been
4539 this way, ignoring any possible changed of length, since
4540 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4542 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4548 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4550 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4551 sv_usepvn(libdir,unix,len);
4554 PerlIO_printf(Perl_error_log,
4555 "Failed to unixify @INC element \"%s\"\n",
4556 SvPV_nolen_const(libdir));
4560 /* Do the if() outside the #ifdef to avoid warnings about an unused
4563 #ifdef PERL_RELOCATABLE_INC
4565 * Relocatable include entries are marked with a leading .../
4568 * 0: Remove that leading ".../"
4569 * 1: Remove trailing executable name (anything after the last '/')
4570 * from the perl path to give a perl prefix
4572 * While the @INC element starts "../" and the prefix ends with a real
4573 * directory (ie not . or ..) chop that real directory off the prefix
4574 * and the leading "../" from the @INC element. ie a logical "../"
4576 * Finally concatenate the prefix and the remainder of the @INC element
4577 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4578 * generates /usr/local/lib/perl5
4580 const char *libpath = SvPVX(libdir);
4581 STRLEN libpath_len = SvCUR(libdir);
4582 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4584 SV * const caret_X = get_sv("\030", 0);
4585 /* Going to use the SV just as a scratch buffer holding a C
4591 /* $^X is *the* source of taint if tainting is on, hence
4592 SvPOK() won't be true. */
4594 assert(SvPOKp(caret_X));
4595 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4597 /* Firstly take off the leading .../
4598 If all else fail we'll do the paths relative to the current
4600 sv_chop(libdir, libpath + 4);
4601 /* Don't use SvPV as we're intentionally bypassing taining,
4602 mortal copies that the mg_get of tainting creates, and
4603 corruption that seems to come via the save stack.
4604 I guess that the save stack isn't correctly set up yet. */
4605 libpath = SvPVX(libdir);
4606 libpath_len = SvCUR(libdir);
4608 /* This would work more efficiently with memrchr, but as it's
4609 only a GNU extension we'd need to probe for it and
4610 implement our own. Not hard, but maybe not worth it? */
4612 prefix = SvPVX(prefix_sv);
4613 lastslash = strrchr(prefix, '/');
4615 /* First time in with the *lastslash = '\0' we just wipe off
4616 the trailing /perl from (say) /usr/foo/bin/perl
4620 while ((*lastslash = '\0'), /* Do that, come what may. */
4621 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4622 && (lastslash = strrchr(prefix, '/')))) {
4623 if (lastslash[1] == '\0'
4624 || (lastslash[1] == '.'
4625 && (lastslash[2] == '/' /* ends "/." */
4626 || (lastslash[2] == '/'
4627 && lastslash[3] == '/' /* or "/.." */
4629 /* Prefix ends "/" or "/." or "/..", any of which
4630 are fishy, so don't do any more logical cleanup.
4634 /* Remove leading "../" from path */
4637 /* Next iteration round the loop removes the last
4638 directory name from prefix by writing a '\0' in
4639 the while clause. */
4641 /* prefix has been terminated with a '\0' to the correct
4642 length. libpath points somewhere into the libdir SV.
4643 We need to join the 2 with '/' and drop the result into
4645 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4646 SvREFCNT_dec(libdir);
4647 /* And this is the new libdir. */
4650 (PerlProc_getuid() != PerlProc_geteuid() ||
4651 PerlProc_getgid() != PerlProc_getegid())) {
4652 /* Need to taint relocated paths if running set ID */
4653 SvTAINTED_on(libdir);
4656 SvREFCNT_dec(prefix_sv);
4664 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4667 #ifndef PERL_IS_MINIPERL
4668 const U8 using_sub_dirs
4669 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4670 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4671 const U8 add_versioned_sub_dirs
4672 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4673 const U8 add_archonly_sub_dirs
4674 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4675 #ifdef PERL_INC_VERSION_LIST
4676 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4679 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4680 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4681 AV *const inc = GvAVn(PL_incgv);
4683 PERL_ARGS_ASSERT_INCPUSH;
4686 /* Could remove this vestigial extra block, if we don't mind a lot of
4687 re-indenting diff noise. */
4689 SV *const libdir = mayberelocate(dir, len, flags);
4690 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4691 arranged to unshift #! line -I onto the front of @INC. However,
4692 -I can add version and architecture specific libraries, and they
4693 need to go first. The old code assumed that it was always
4694 pushing. Hence to make it work, need to push the architecture
4695 (etc) libraries onto a temporary array, then "unshift" that onto
4696 the front of @INC. */
4697 #ifndef PERL_IS_MINIPERL
4698 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4701 * BEFORE pushing libdir onto @INC we may first push version- and
4702 * archname-specific sub-directories.
4704 if (using_sub_dirs) {
4705 SV *subdir = newSVsv(libdir);
4706 #ifdef PERL_INC_VERSION_LIST
4707 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4708 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4709 const char * const *incver;
4712 if (add_versioned_sub_dirs) {
4713 /* .../version/archname if -d .../version/archname */
4714 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4715 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4717 /* .../version if -d .../version */
4718 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4719 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4722 #ifdef PERL_INC_VERSION_LIST
4724 for (incver = incverlist; *incver; incver++) {
4725 /* .../xxx if -d .../xxx */
4726 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4727 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4732 if (add_archonly_sub_dirs) {
4733 /* .../archname if -d .../archname */
4734 sv_catpvs(subdir, "/" ARCHNAME);
4735 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4739 assert (SvREFCNT(subdir) == 1);
4740 SvREFCNT_dec(subdir);
4742 #endif /* !PERL_IS_MINIPERL */
4743 /* finally add this lib directory at the end of @INC */
4745 #ifdef PERL_IS_MINIPERL
4746 const Size_t extra = 0;
4748 Size_t extra = av_tindex(av) + 1;
4750 av_unshift(inc, extra + push_basedir);
4752 av_store(inc, extra, libdir);
4753 #ifndef PERL_IS_MINIPERL
4755 /* av owns a reference, av_store() expects to be donated a
4756 reference, and av expects to be sane when it's cleared.
4757 If I wanted to be naughty and wrong, I could peek inside the
4758 implementation of av_clear(), realise that it uses
4759 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4760 and so directly steal from it (with a memcpy() to inc, and
4761 then memset() to NULL them out. But people copy code from the
4762 core expecting it to be best practise, so let's use the API.
4763 Although studious readers will note that I'm not checking any
4765 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4770 else if (push_basedir) {
4771 av_push(inc, libdir);
4774 if (!push_basedir) {
4775 assert (SvREFCNT(libdir) == 1);
4776 SvREFCNT_dec(libdir);
4782 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4786 /* This logic has been broken out from S_incpush(). It may be possible to
4789 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4791 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4792 * argument to incpush_use_sep. This allows creation of relocatable
4793 * Perl distributions that patch the binary at install time. Those
4794 * distributions will have to provide their own relocation tools; this
4795 * is not a feature otherwise supported by core Perl.
4797 #ifndef PERL_RELOCATABLE_INCPUSH
4804 /* Break at all separators */
4805 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4807 /* skip any consecutive separators */
4809 /* Uncomment the next line for PATH semantics */
4810 /* But you'll need to write tests */
4811 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4813 incpush(p, (STRLEN)(s - p), flags);
4818 incpush(p, (STRLEN)(end - p), flags);
4823 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4827 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4833 PERL_ARGS_ASSERT_CALL_LIST;
4835 while (av_tindex(paramList) >= 0) {
4836 cv = MUTABLE_CV(av_shift(paramList));
4838 if (paramList == PL_beginav) {
4839 /* save PL_beginav for compiler */
4840 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4842 else if (paramList == PL_checkav) {
4843 /* save PL_checkav for compiler */
4844 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4846 else if (paramList == PL_unitcheckav) {
4847 /* save PL_unitcheckav for compiler */
4848 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4859 PL_madskills |= 16384;
4864 PL_madskills &= ~16384;
4867 (void)SvPV_const(atsv, len);
4869 PL_curcop = &PL_compiling;
4870 CopLINE_set(PL_curcop, oldline);
4871 if (paramList == PL_beginav)
4872 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4874 Perl_sv_catpvf(aTHX_ atsv,
4875 "%s failed--call queue aborted",
4876 paramList == PL_checkav ? "CHECK"
4877 : paramList == PL_initav ? "INIT"
4878 : paramList == PL_unitcheckav ? "UNITCHECK"
4880 while (PL_scopestack_ix > oldscope)
4883 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4890 /* my_exit() was called */
4891 while (PL_scopestack_ix > oldscope)
4894 SET_CURSTASH(PL_defstash);
4895 PL_curcop = &PL_compiling;
4896 CopLINE_set(PL_curcop, oldline);
4899 assert(0); /* NOTREACHED */
4902 PL_curcop = &PL_compiling;
4903 CopLINE_set(PL_curcop, oldline);
4906 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4915 Perl_my_exit(pTHX_ U32 status)
4918 if (PL_exit_flags & PERL_EXIT_ABORT) {
4921 if (PL_exit_flags & PERL_EXIT_WARN) {
4922 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4923 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4924 PL_exit_flags &= ~PERL_EXIT_ABORT;
4934 STATUS_EXIT_SET(status);
4941 Perl_my_failure_exit(pTHX)
4945 /* We have been called to fall on our sword. The desired exit code
4946 * should be already set in STATUS_UNIX, but could be shifted over
4947 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4950 * If an error code has not been set, then force the issue.
4952 if (MY_POSIX_EXIT) {
4954 /* According to the die_exit.t tests, if errno is non-zero */
4955 /* It should be used for the error status. */
4957 if (errno == EVMSERR) {
4958 STATUS_NATIVE = vaxc$errno;
4961 /* According to die_exit.t tests, if the child_exit code is */
4962 /* also zero, then we need to exit with a code of 255 */
4963 if ((errno != 0) && (errno < 256))
4964 STATUS_UNIX_EXIT_SET(errno);
4965 else if (STATUS_UNIX < 255) {
4966 STATUS_UNIX_EXIT_SET(255);
4971 /* The exit code could have been set by $? or vmsish which
4972 * means that it may not have fatal set. So convert
4973 * success/warning codes to fatal with out changing
4974 * the POSIX status code. The severity makes VMS native
4975 * status handling work, while UNIX mode programs use the
4976 * the POSIX exit codes.
4978 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4979 STATUS_NATIVE &= STS$M_COND_ID;
4980 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4984 /* Traditionally Perl on VMS always expects a Fatal Error. */
4985 if (vaxc$errno & 1) {
4987 /* So force success status to failure */
4988 if (STATUS_NATIVE & 1)
4993 STATUS_UNIX = EINTR; /* In case something cares */
4998 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5000 /* Encode the severity code */
5001 severity = STATUS_NATIVE & STS$M_SEVERITY;
5002 STATUS_UNIX = (severity ? severity : 1) << 8;
5004 /* Perl expects this to be a fatal error */
5005 if (severity != STS$K_SEVERE)
5014 STATUS_UNIX_SET(errno);
5016 exitstatus = STATUS_UNIX >> 8;
5017 if (exitstatus & 255)
5018 STATUS_UNIX_SET(exitstatus);
5020 STATUS_UNIX_SET(255);
5023 if (PL_exit_flags & PERL_EXIT_ABORT) {
5026 if (PL_exit_flags & PERL_EXIT_WARN) {
5027 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5028 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5029 PL_exit_flags &= ~PERL_EXIT_ABORT;
5035 S_my_exit_jump(pTHX)
5040 SvREFCNT_dec(PL_e_script);
5044 POPSTACK_TO(PL_mainstack);
5052 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5055 const char * const p = SvPVX_const(PL_e_script);
5056 const char *nl = strchr(p, '\n');
5058 PERL_UNUSED_ARG(idx);
5059 PERL_UNUSED_ARG(maxlen);
5061 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5063 filter_del(read_e_script);
5066 sv_catpvn(buf_sv, p, nl-p);
5067 sv_chop(PL_e_script, nl);
5073 * c-indentation-style: bsd
5075 * indent-tabs-mode: nil
5078 * ex: set ts=8 sts=4 sw=4 et: