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 */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
61 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
62 char *getenv (char *); /* Usually in <stdlib.h> */
65 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
67 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
68 # define validate_suid(rsfp) NOOP
70 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
73 #define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
79 #define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
84 S_init_tls_and_interp(PerlInterpreter *my_perl)
88 PERL_SET_INTERP(my_perl);
89 #if defined(USE_ITHREADS)
92 PERL_SET_THX(my_perl);
96 MUTEX_INIT(&PL_dollarzero_mutex);
97 MUTEX_INIT(&PL_my_ctx_mutex);
100 #if defined(USE_ITHREADS)
103 /* This always happens for non-ithreads */
106 PERL_SET_THX(my_perl);
111 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114 Perl_sys_init(int* argc, char*** argv)
118 PERL_ARGS_ASSERT_SYS_INIT;
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
126 Perl_sys_init3(int* argc, char*** argv, char*** env)
130 PERL_ARGS_ASSERT_SYS_INIT3;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
148 #ifdef PERL_IMPLICIT_SYS
150 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
156 PerlInterpreter *my_perl;
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160 /* Newx() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
162 S_init_tls_and_interp(my_perl);
163 Zero(my_perl, 1, PerlInterpreter);
173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
180 =head1 Embedding Functions
182 =for apidoc perl_alloc
184 Allocates a new Perl interpreter. See L<perlembed>.
192 PerlInterpreter *my_perl;
194 /* Newx() needs interpreter, so call malloc() instead */
195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
197 S_init_tls_and_interp(my_perl);
198 #ifndef PERL_TRACK_MEMPOOL
199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
206 #endif /* PERL_IMPLICIT_SYS */
209 =for apidoc perl_construct
211 Initializes a new Perl interpreter. See L<perlembed>.
217 perl_construct(pTHXx)
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
225 PL_perl_destruct_level = 1;
227 PERL_UNUSED_ARG(my_perl);
228 if (PL_perl_destruct_level > 0)
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 #ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
239 SvREADONLY_on(&PL_sv_placeholder);
240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
243 #ifdef PERL_USES_PL_PIDSTATUS
244 PL_pidstatus = newHV();
247 PL_rs = newSVpvs("\n");
258 #if defined(LOCAL_PATCH_COUNT)
259 PL_localpatches = local_patches; /* For possible -v */
262 #ifdef HAVE_INTERP_INTERN
266 PerlIO_init(aTHX); /* Hook to IO system */
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
270 PL_errors = newSVpvs("");
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
278 PL_regex_pad = AvARRAY(PL_regex_padav);
279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
281 #ifdef USE_REENTRANT_API
282 Perl_reentrant_init(aTHX);
284 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
296 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 # ifdef USE_ENVIRON_ARRAY
310 PL_origenviron = environ;
314 /* Use sysconf(_SC_CLK_TCK) if available, if not
315 * available or if the sysconf() fails, use the HZ.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
329 if (!PL_mmap_page_size) {
330 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 SETERRNO(0, SS_NORMAL);
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338 if ((long) PL_mmap_page_size < 0) {
340 SV * const error = ERRSV;
341 SvUPGRADE(error, SVt_PV);
342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
349 # ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
352 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
361 #endif /* HAS_MMAP */
363 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372 PL_registered_mros = newHV();
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
400 =for apidoc nothreadhook
402 Stub that provides thread hook for perl_destruct when there are
409 Perl_nothreadhook(pTHX)
415 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417 Perl_dump_sv_child(pTHX_ SV *sv)
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
422 union control_un control;
425 struct cmsghdr *cmptr;
427 unsigned char buffer[256];
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431 if(sock == -1 || debug_fd == -1)
434 PerlIO_flush(Perl_debug_log);
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
440 be open, the wait would be forever.) */
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
461 perror("Debug leaking scalars parent sendmsg failed");
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
469 /* Return protocol is
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
479 got = readv(sock, vec, 2);
482 perror("Debug leaking scalars parent read failed");
483 PerlIO_flush(PerlIO_stderr());
486 if(got < sizeof(returned_errno) + 1) {
487 perror("Debug leaking scalars parent short read");
488 PerlIO_flush(PerlIO_stderr());
493 got = read(sock, buffer + 1, *buffer);
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
510 returned_errno, Strerror(returned_errno));
516 =for apidoc perl_destruct
518 Shuts down a Perl interpreter. See L<perlembed>.
527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
529 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 assert(PL_scopestack_ix == 1);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
545 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
560 if (destruct_level < i) destruct_level = i;
562 #ifdef PERL_TRACK_MEMPOOL
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
576 if (PL_endav && !PL_minus_c) {
577 PERL_SET_PHASE(PERL_PHASE_END);
578 call_list(PL_scopestack_ix, PL_endav);
584 assert(PL_scopestack_ix == 0);
586 /* Need to flush since END blocks can produce output */
589 #ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
603 if (PL_threadhook(aTHX)) {
604 /* Threads hook has vetoed further cleanup */
605 PL_veto_cleanup = TRUE;
609 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
625 perror("Debug leaking scalars fork failed");
629 /* We are the child */
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
634 /* Our success message is an integer 0, and a char 0 */
635 static const char success[sizeof(int) + 1] = {0};
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
651 f = sysconf(_SC_OPEN_MAX);
653 where = "sysconf failed";
664 union control_un control;
667 struct cmsghdr *cmptr;
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
679 vec[0].iov_base = (void*)⌖
680 vec[0].iov_len = sizeof(target);
682 got = recvmsg(sock, &msg, 0);
687 where = "recv failed";
690 if(got < sizeof(target)) {
691 where = "short recv";
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
724 PerlIO_flush(Perl_debug_log);
726 got = write(sock, &success, sizeof(success));
729 where = "write failed";
732 if(got < sizeof(success)) {
733 where = "short write";
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
745 {(void*)where, length}
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
754 _exit((got == -1) ? errno : 0);
758 PL_dumper_fd = fd[0];
763 /* We must account for everything. */
765 /* Destroy the main CV and syntax tree */
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
770 PL_curcop = &PL_compiling;
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
777 op_free(PL_main_root);
780 PL_main_start = NULL;
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
785 SvREFCNT_dec(PL_main_cv);
787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
794 PerlIO_destruct(aTHX);
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
803 /* unhook hooks which will soon be, or use, destroyed data */
804 SvREFCNT_dec(PL_warnhook);
806 SvREFCNT_dec(PL_diehook);
809 /* call exit list functions */
810 while (PL_exitlistlen-- > 0)
811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
813 Safefree(PL_exitlist);
818 SvREFCNT_dec(PL_registered_mros);
820 /* jettison our possibly duplicated environment */
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
825 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
826 if (environ != PL_origenviron && !PL_use_safe_putenv
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
835 for (i = 0; environ[i]; i++)
836 safesysfree(environ[i]);
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
841 environ = PL_origenviron;
844 #endif /* !PERL_MICRO */
846 if (destruct_level == 0) {
848 DEBUG_P(debprofdump());
850 #if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
855 CopFILE_free(&PL_compiling);
857 /* The exit() function will do everything that needs doing. */
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
882 PL_stashcache = NULL;
884 /* loosen bonds of global variables */
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
893 Safefree(PL_splitstr);
903 PL_doswitches = FALSE;
904 PL_dowarn = G_WARN_OFF;
905 #ifdef PERL_SAWAMPERSAND
906 PL_sawampersand = 0; /* must save all match strings */
910 Safefree(PL_inplace);
912 SvREFCNT_dec(PL_patchlevel);
915 SvREFCNT_dec(PL_e_script);
921 /* magical thingies */
923 SvREFCNT_dec(PL_ofsgv); /* *, */
926 SvREFCNT_dec(PL_ors_sv); /* $\ */
929 SvREFCNT_dec(PL_rs); /* $/ */
932 Safefree(PL_osname); /* $^O */
935 SvREFCNT_dec(PL_statname);
939 /* defgv, aka *_ should be taken care of elsewhere */
942 Safefree(PL_efloatbuf);
946 /* startup and shutdown function lists */
947 SvREFCNT_dec(PL_beginav);
948 SvREFCNT_dec(PL_beginav_save);
949 SvREFCNT_dec(PL_endav);
950 SvREFCNT_dec(PL_checkav);
951 SvREFCNT_dec(PL_checkav_save);
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
954 SvREFCNT_dec(PL_initav);
956 PL_beginav_save = NULL;
959 PL_checkav_save = NULL;
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
964 /* shortcuts just get cleared */
970 PL_last_in_gv = NULL;
981 SvREFCNT_dec(PL_envgv);
982 SvREFCNT_dec(PL_incgv);
983 SvREFCNT_dec(PL_argvgv);
984 SvREFCNT_dec(PL_replgv);
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
996 SvREFCNT_dec(PL_argvout_stack);
997 PL_argvout_stack = NULL;
999 SvREFCNT_dec(PL_modglobal);
1000 PL_modglobal = NULL;
1001 SvREFCNT_dec(PL_preambleav);
1002 PL_preambleav = NULL;
1003 SvREFCNT_dec(PL_subname);
1005 #ifdef PERL_USES_PL_PIDSTATUS
1006 SvREFCNT_dec(PL_pidstatus);
1007 PL_pidstatus = NULL;
1009 SvREFCNT_dec(PL_toptarget);
1010 PL_toptarget = NULL;
1011 SvREFCNT_dec(PL_bodytarget);
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
1015 /* free locale stuff */
1016 #ifdef USE_LOCALE_COLLATE
1017 Safefree(PL_collation_name);
1018 PL_collation_name = NULL;
1021 #ifdef USE_LOCALE_NUMERIC
1022 Safefree(PL_numeric_name);
1023 PL_numeric_name = NULL;
1024 SvREFCNT_dec(PL_numeric_radix_sv);
1025 PL_numeric_radix_sv = NULL;
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
1035 SvREFCNT_dec(PL_utf8_totitle);
1036 SvREFCNT_dec(PL_utf8_tolower);
1037 SvREFCNT_dec(PL_utf8_tofold);
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
1040 SvREFCNT_dec(PL_utf8_foldable);
1041 SvREFCNT_dec(PL_utf8_foldclosures);
1042 SvREFCNT_dec(PL_AboveLatin1);
1043 SvREFCNT_dec(PL_InBitmap);
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
1048 #ifdef USE_LOCALE_CTYPE
1049 SvREFCNT_dec(PL_warn_locale);
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
1058 PL_utf8_foldclosures = NULL;
1059 PL_AboveLatin1 = NULL;
1061 PL_HasMultiCharFold = NULL;
1062 #ifdef USE_LOCALE_CTYPE
1063 PL_warn_locale = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
1072 PL_GCB_invlist = NULL;
1073 PL_SB_invlist = NULL;
1074 PL_WB_invlist = NULL;
1076 if (!specialWARN(PL_compiling.cop_warnings))
1077 PerlMemShared_free(PL_compiling.cop_warnings);
1078 PL_compiling.cop_warnings = NULL;
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1081 CopFILE_free(&PL_compiling);
1083 /* Prepare to destruct main symbol table. */
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1090 SvREFCNT_dec(PL_curstname);
1091 PL_curstname = NULL;
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
1097 SvREFCNT_dec(PL_isarev);
1100 if (destruct_level >= 2) {
1101 if (PL_scopestack_ix != 0)
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
1105 if (PL_savestack_ix != 0)
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
1109 if (PL_tmps_floor != -1)
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
1112 if (cxstack_ix != -1)
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1123 #ifdef PERL_IMPLICIT_CONTEXT
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
1131 /* the 2 is for PL_fdpid and PL_strtab */
1132 while (sv_clean_all() > 2)
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1143 #ifdef HAVE_INTERP_INTERN
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1153 /* Destruct the global string table. */
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
1162 const I32 max = HvMAX(PL_strtab);
1163 HE * const * const array = HvARRAY(PL_strtab);
1164 HE *hent = array[0];
1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
1168 HE * const next = HeNEXT(hent);
1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1178 hent = array[riter];
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
1186 SvREFCNT_dec(PL_strtab);
1189 /* free the pointer tables used for cloning */
1190 ptr_table_free(PL_ptr_table);
1191 PL_ptr_table = (PTR_TBL_t*)NULL;
1194 /* free special SVs */
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
1199 SvFLAGS(&PL_sv_yes) = 0;
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
1204 SvFLAGS(&PL_sv_no) = 0;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1219 #ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
1241 PTR2UV(sv->sv_debug_parent),
1244 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1245 Perl_dump_sv_child(aTHX_ sv);
1251 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1258 struct timeval waitfor = {4, 0};
1259 int sock = PL_dumper_fd;
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1270 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1276 #if defined(PERLIO_LAYERS)
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1282 as currently layers use it rather than NULL as a marker
1283 for no arg - and will try and SvREFCNT_dec it.
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1288 Safefree(PL_origfilename);
1289 PL_origfilename = NULL;
1290 Safefree(PL_reg_curpm);
1291 free_tied_hv_pool();
1292 Safefree(PL_op_mask);
1293 Safefree(PL_psig_name);
1294 PL_psig_name = (SV**)NULL;
1295 PL_psig_ptr = (SV**)NULL;
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1308 DEBUG_P(debprofdump());
1312 #ifdef USE_REENTRANT_API
1313 Perl_reentrant_free(aTHX);
1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1334 /* we know that type == SVt_PVMG */
1336 /* it could have accumulated taint magic */
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1343 Safefree(mg->mg_ptr);
1347 /* we know that type >= SVt_PV */
1348 SvPV_free(PL_mess_sv);
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
1357 =for apidoc perl_free
1359 Releases a Perl interpreter. See L<perlembed>.
1369 PERL_ARGS_ASSERT_PERL_FREE;
1371 if (PL_veto_cleanup)
1374 #ifdef PERL_TRACK_MEMPOOL
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1380 if (PL_perl_destruct_level == 0) {
1381 const U32 old_debug = PL_debug;
1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1394 PL_debug = old_debug;
1399 #if defined(WIN32) || defined(NETWARE)
1400 # if defined(PERL_IMPLICIT_SYS)
1403 void *host = nw_internal_host;
1404 PerlMem_free(aTHXx);
1405 nw_delete_internal_host(host);
1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
1409 win32_delete_internal_host(host);
1413 PerlMem_free(aTHXx);
1416 PerlMem_free(aTHXx);
1420 #if defined(USE_ITHREADS)
1421 /* provide destructors to clean up the thread key when libperl is unloaded */
1422 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1424 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1425 #pragma fini "perl_fini"
1426 #elif defined(__sun) && !defined(__GNUC__)
1427 #pragma fini (perl_fini)
1431 #if defined(__GNUC__)
1432 __attribute__((destructor))
1438 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1441 PL_curinterp && !PL_veto_cleanup)
1446 #endif /* THREADS */
1449 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1458 =for apidoc perl_parse
1460 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1465 #define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1472 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480 #ifndef MULTIPLICITY
1481 PERL_UNUSED_ARG(my_perl);
1483 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1487 if (s && strEQ(s, "1")) {
1488 unsigned char *seed= PERL_HASH_SEED;
1489 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1494 #ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1499 PerlIO_printf(Perl_debug_log, "\n");
1502 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1506 if (PL_origalen != 0) {
1507 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1510 /* Set PL_origalen be the sum of the contiguous argv[]
1511 * elements plus the size of the env in case that it is
1512 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1513 * as the maximum modifiable length of $0. In the worst case
1514 * the area we are able to modify is limited to the size of
1515 * the original argv[0]. (See below for 'contiguous', though.)
1517 const char *s = NULL;
1519 const UV mask = ~(UV)(PTRSIZE-1);
1520 /* Do the mask check only if the args seem like aligned. */
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
1538 || PL_origargv[i] == s + 2
1543 (PL_origargv[i] > s &&
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1556 #ifndef PERL_USE_SAFE_PUTENV
1557 /* Can we grab env area too to be used as the area for $0? */
1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
1559 if ((PL_origenviron[0] == s + 1)
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1568 s = PL_origenviron[0];
1571 my_setenv("NoNe SuCh", NULL);
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1582 s = PL_origenviron[i];
1590 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1597 /* Come here if running an undumped a.out. */
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
1601 cxstack_ix = -1; /* start label stack again */
1603 assert (!TAINT_get);
1607 init_postdump_symbols(argc,argv,env);
1612 op_free(PL_main_root);
1613 PL_main_root = NULL;
1615 PL_main_start = NULL;
1616 SvREFCNT_dec(PL_main_cv);
1620 oldscope = PL_scopestack_ix;
1621 PL_dowarn = G_WARN_OFF;
1626 parse_body(env,xsinit);
1627 if (PL_unitcheckav) {
1628 call_list(oldscope, PL_unitcheckav);
1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
1632 call_list(oldscope, PL_checkav);
1640 /* my_exit() was called */
1641 while (PL_scopestack_ix > oldscope)
1644 SET_CURSTASH(PL_defstash);
1645 if (PL_unitcheckav) {
1646 call_list(oldscope, PL_unitcheckav);
1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
1650 call_list(oldscope, PL_checkav);
1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1663 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1666 /* What this returns is subject to change. Use the public interface in Config.
1669 S_Internals_V(pTHX_ CV *cv)
1672 #ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1675 const int local_patch_count = 0;
1677 const int entries = 3 + local_patch_count;
1679 static const char non_bincompat_options[] =
1686 # ifdef NO_HASH_SEED
1689 # ifdef NO_TAINT_SUPPORT
1692 # ifdef PERL_BOOL_AS_CHAR
1693 " PERL_BOOL_AS_CHAR"
1695 # ifdef PERL_COPY_ON_WRITE
1696 " PERL_COPY_ON_WRITE"
1698 # ifdef PERL_DISABLE_PMC
1701 # ifdef PERL_DONT_CREATE_GVSV
1702 " PERL_DONT_CREATE_GVSV"
1704 # ifdef PERL_EXTERNAL_GLOB
1705 " PERL_EXTERNAL_GLOB"
1707 # ifdef PERL_HASH_FUNC_SIPHASH
1708 " PERL_HASH_FUNC_SIPHASH"
1710 # ifdef PERL_HASH_FUNC_SDBM
1711 " PERL_HASH_FUNC_SDBM"
1713 # ifdef PERL_HASH_FUNC_DJB2
1714 " PERL_HASH_FUNC_DJB2"
1716 # ifdef PERL_HASH_FUNC_SUPERFAST
1717 " PERL_HASH_FUNC_SUPERFAST"
1719 # ifdef PERL_HASH_FUNC_MURMUR3
1720 " PERL_HASH_FUNC_MURMUR3"
1722 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1723 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1725 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1726 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1728 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1729 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1731 # ifdef PERL_IS_MINIPERL
1734 # ifdef PERL_MALLOC_WRAP
1737 # ifdef PERL_MEM_LOG
1740 # ifdef PERL_MEM_LOG_NOIMPL
1741 " PERL_MEM_LOG_NOIMPL"
1743 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1744 " PERL_PERTURB_KEYS_DETERMINISTIC"
1746 # ifdef PERL_PERTURB_KEYS_DISABLED
1747 " PERL_PERTURB_KEYS_DISABLED"
1749 # ifdef PERL_PERTURB_KEYS_RANDOM
1750 " PERL_PERTURB_KEYS_RANDOM"
1752 # ifdef PERL_PRESERVE_IVUV
1753 " PERL_PRESERVE_IVUV"
1755 # ifdef PERL_RELOCATABLE_INCPUSH
1756 " PERL_RELOCATABLE_INCPUSH"
1758 # ifdef PERL_USE_DEVEL
1761 # ifdef PERL_USE_SAFE_PUTENV
1762 " PERL_USE_SAFE_PUTENV"
1764 # ifdef UNLINK_ALL_VERSIONS
1765 " UNLINK_ALL_VERSIONS"
1767 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1768 " USE_ATTRIBUTES_FOR_PERLIO"
1770 # ifdef USE_FAST_STDIO
1773 # ifdef USE_HASH_SEED_EXPLICIT
1774 " USE_HASH_SEED_EXPLICIT"
1779 # ifdef USE_LOCALE_CTYPE
1782 # ifdef USE_PERL_ATOF
1785 # ifdef USE_SITECUSTOMIZE
1786 " USE_SITECUSTOMIZE"
1789 PERL_UNUSED_ARG(cv);
1790 PERL_UNUSED_VAR(items);
1792 EXTEND(SP, entries);
1794 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1795 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1796 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1800 PUSHs(Perl_newSVpvn_flags(aTHX_
1801 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1804 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1808 PUSHs(&PL_sv_undef);
1811 for (i = 1; i <= local_patch_count; i++) {
1812 /* This will be an undef, if PL_localpatches[i] is NULL. */
1813 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1819 #define INCPUSH_UNSHIFT 0x01
1820 #define INCPUSH_ADD_OLD_VERS 0x02
1821 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1822 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1823 #define INCPUSH_NOT_BASEDIR 0x10
1824 #define INCPUSH_CAN_RELOCATE 0x20
1825 #define INCPUSH_ADD_SUB_DIRS \
1826 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1829 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1833 int argc = PL_origargc;
1834 char **argv = PL_origargv;
1835 const char *scriptname = NULL;
1836 bool dosearch = FALSE;
1838 bool doextract = FALSE;
1839 const char *cddir = NULL;
1840 #ifdef USE_SITECUSTOMIZE
1841 bool minus_f = FALSE;
1843 SV *linestr_sv = NULL;
1844 bool add_read_e_script = FALSE;
1845 U32 lex_start_flags = 0;
1847 PERL_SET_PHASE(PERL_PHASE_START);
1853 for (argc--,argv++; argc > 0; argc--,argv++) {
1854 if (argv[0][0] != '-' || !argv[0][1])
1860 #ifndef PERL_STRICT_CR
1884 if ((s = moreswitches(s)))
1889 #if defined(SILENT_NO_TAINT_SUPPORT)
1890 /* silently ignore */
1891 #elif defined(NO_TAINT_SUPPORT)
1892 Perl_croak_nocontext("This perl was compiled without taint support. "
1893 "Cowardly refusing to run with -t or -T flags");
1895 CHECK_MALLOC_TOO_LATE_FOR('t');
1896 if( !TAINTING_get ) {
1897 TAINT_WARN_set(TRUE);
1904 #if defined(SILENT_NO_TAINT_SUPPORT)
1905 /* silently ignore */
1906 #elif defined(NO_TAINT_SUPPORT)
1907 Perl_croak_nocontext("This perl was compiled without taint support. "
1908 "Cowardly refusing to run with -t or -T flags");
1910 CHECK_MALLOC_TOO_LATE_FOR('T');
1912 TAINT_WARN_set(FALSE);
1921 forbid_setid('e', FALSE);
1923 PL_e_script = newSVpvs("");
1924 add_read_e_script = TRUE;
1927 sv_catpv(PL_e_script, s);
1929 sv_catpv(PL_e_script, argv[1]);
1933 Perl_croak(aTHX_ "No code specified for -%c", c);
1934 sv_catpvs(PL_e_script, "\n");
1938 #ifdef USE_SITECUSTOMIZE
1944 case 'I': /* -I handled both here and in moreswitches() */
1945 forbid_setid('I', FALSE);
1946 if (!*++s && (s=argv[1]) != NULL) {
1950 STRLEN len = strlen(s);
1951 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1954 Perl_croak(aTHX_ "No directory specified for -I");
1957 forbid_setid('S', FALSE);
1966 opts_prog = newSVpvs("use Config; Config::_V()");
1970 opts_prog = Perl_newSVpvf(aTHX_
1971 "use Config; Config::config_vars(qw%c%s%c)",
1975 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1976 /* don't look for script or read stdin */
1977 scriptname = BIT_BUCKET;
1989 if (!*++s || isSPACE(*s)) {
1993 /* catch use of gnu style long options.
1994 Both of these exit immediately. */
1995 if (strEQ(s, "version"))
1997 if (strEQ(s, "help"))
2002 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2013 #ifndef SECURE_INTERNAL_GETENV
2016 (s = PerlEnv_getenv("PERL5OPT")))
2018 /* s points to static memory in getenv(), which may be overwritten at
2019 * any time; use a mortal copy instead */
2020 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2024 if (*s == '-' && *(s+1) == 'T') {
2025 #if defined(SILENT_NO_TAINT_SUPPORT)
2026 /* silently ignore */
2027 #elif defined(NO_TAINT_SUPPORT)
2028 Perl_croak_nocontext("This perl was compiled without taint support. "
2029 "Cowardly refusing to run with -t or -T flags");
2031 CHECK_MALLOC_TOO_LATE_FOR('T');
2033 TAINT_WARN_set(FALSE);
2037 char *popt_copy = NULL;
2050 if (!strchr("CDIMUdmtwW", *s))
2051 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2055 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2056 s = popt_copy + (s - d);
2064 #if defined(SILENT_NO_TAINT_SUPPORT)
2065 /* silently ignore */
2066 #elif defined(NO_TAINT_SUPPORT)
2067 Perl_croak_nocontext("This perl was compiled without taint support. "
2068 "Cowardly refusing to run with -t or -T flags");
2070 if( !TAINTING_get) {
2071 TAINT_WARN_set(TRUE);
2083 /* Set $^X early so that it can be used for relocatable paths in @INC */
2084 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2085 assert (!TAINT_get);
2090 #if defined(USE_SITECUSTOMIZE)
2092 /* The games with local $! are to avoid setting errno if there is no
2093 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2094 ie a q() operator with a NUL byte as a the delimiter. This avoids
2095 problems with pathnames containing (say) ' */
2096 # ifdef PERL_IS_MINIPERL
2097 AV *const inc = GvAV(PL_incgv);
2098 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2101 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2102 it should be reported immediately as a build failure. */
2103 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2105 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2106 "do {local $!; -f $f }"
2107 " and do $f || die $@ || qq '$f: $!' }",
2108 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2111 /* SITELIB_EXP is a function call on Win32. */
2112 const char *const raw_sitelib = SITELIB_EXP;
2114 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2115 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2116 INCPUSH_CAN_RELOCATE);
2117 const char *const sitelib = SvPVX(sitelib_sv);
2118 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2120 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2121 0, SVfARG(sitelib), 0,
2122 0, SVfARG(sitelib), 0));
2123 assert (SvREFCNT(sitelib_sv) == 1);
2124 SvREFCNT_dec(sitelib_sv);
2131 scriptname = argv[0];
2134 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2136 else if (scriptname == NULL) {
2138 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2144 assert (!TAINT_get);
2148 bool suidscript = FALSE;
2150 rsfp = open_script(scriptname, dosearch, &suidscript);
2152 rsfp = PerlIO_stdin();
2153 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2156 validate_suid(rsfp);
2159 # if defined(SIGCHLD) || defined(SIGCLD)
2162 # define SIGCHLD SIGCLD
2164 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2165 if (sigstate == (Sighandler_t) SIG_IGN) {
2166 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2167 "Can't ignore signal CHLD, forcing to default");
2168 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2176 /* This will croak if suidscript is true, as -x cannot be used with
2178 forbid_setid('x', suidscript);
2179 /* Hence you can't get here if suidscript is true */
2181 linestr_sv = newSV_type(SVt_PV);
2182 lex_start_flags |= LEX_START_COPIED;
2183 find_beginning(linestr_sv, rsfp);
2184 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2185 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2189 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2190 CvUNIQUE_on(PL_compcv);
2192 CvPADLIST_set(PL_compcv, pad_new(0));
2194 PL_isarev = newHV();
2197 boot_core_UNIVERSAL();
2199 newXS("Internals::V", S_Internals_V, __FILE__);
2202 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2204 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2210 # ifdef HAS_SOCKS5_INIT
2211 socks5_init(argv[0]);
2217 init_predump_symbols();
2218 /* init_postdump_symbols not currently designed to be called */
2219 /* more than once (ENV isn't cleared first, for example) */
2220 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2222 init_postdump_symbols(argc,argv,env);
2224 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2225 * or explicitly in some platforms.
2226 * locale.c:Perl_init_i18nl10n() if the environment
2227 * look like the user wants to use UTF-8. */
2228 #if defined(__SYMBIAN32__)
2229 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2231 # ifndef PERL_IS_MINIPERL
2233 /* Requires init_predump_symbols(). */
2234 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2239 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2240 * and the default open disciplines. */
2241 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2242 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2244 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2245 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2246 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2248 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2249 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2250 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2252 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2253 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2254 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2256 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2257 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2260 sv_setpvs(sv, ":utf8\0:utf8");
2262 sv_setpvs(sv, ":utf8\0");
2265 sv_setpvs(sv, "\0:utf8");
2274 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2275 if (strEQ(s, "unsafe"))
2276 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2277 else if (strEQ(s, "safe"))
2278 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2280 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2285 lex_start(linestr_sv, rsfp, lex_start_flags);
2286 SvREFCNT_dec(linestr_sv);
2288 PL_subname = newSVpvs("main");
2290 if (add_read_e_script)
2291 filter_add(read_e_script, NULL);
2293 /* now parse the script */
2295 SETERRNO(0,SS_NORMAL);
2296 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2298 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2300 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2304 CopLINE_set(PL_curcop, 0);
2305 SET_CURSTASH(PL_defstash);
2307 SvREFCNT_dec(PL_e_script);
2315 SAVECOPFILE(PL_curcop);
2316 SAVECOPLINE(PL_curcop);
2317 gv_check(PL_defstash);
2327 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2328 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2329 dump_mstats("after compilation:");
2334 PL_restartjmpenv = NULL;
2340 =for apidoc perl_run
2342 Tells a Perl interpreter to run. See L<perlembed>.
2354 PERL_ARGS_ASSERT_PERL_RUN;
2355 #ifndef MULTIPLICITY
2356 PERL_UNUSED_ARG(my_perl);
2359 oldscope = PL_scopestack_ix;
2367 cxstack_ix = -1; /* start context stack again */
2369 case 0: /* normal completion */
2373 case 2: /* my_exit() */
2374 while (PL_scopestack_ix > oldscope)
2377 SET_CURSTASH(PL_defstash);
2378 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2379 PL_endav && !PL_minus_c) {
2380 PERL_SET_PHASE(PERL_PHASE_END);
2381 call_list(oldscope, PL_endav);
2384 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2385 dump_mstats("after execution: ");
2391 POPSTACK_TO(PL_mainstack);
2394 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2405 S_run_body(pTHX_ I32 oldscope)
2407 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2408 PL_sawampersand ? "Enabling" : "Omitting",
2409 (unsigned int)(PL_sawampersand)));
2411 if (!PL_restartop) {
2413 if (DEBUG_x_TEST || DEBUG_B_TEST)
2414 dump_all_perl(!DEBUG_B_TEST);
2416 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2420 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2423 if (PERLDB_SINGLE && PL_DBsingle)
2426 PERL_SET_PHASE(PERL_PHASE_INIT);
2427 call_list(oldscope, PL_initav);
2429 #ifdef PERL_DEBUG_READONLY_OPS
2430 if (PL_main_root && PL_main_root->op_slabbed)
2431 Slab_to_ro(OpSLAB(PL_main_root));
2437 PERL_SET_PHASE(PERL_PHASE_RUN);
2440 PL_restartjmpenv = NULL;
2441 PL_op = PL_restartop;
2445 else if (PL_main_start) {
2446 CvDEPTH(PL_main_cv) = 1;
2447 PL_op = PL_main_start;
2451 NOT_REACHED; /* NOTREACHED */
2455 =head1 SV Manipulation Functions
2457 =for apidoc p||get_sv
2459 Returns the SV of the specified Perl scalar. C<flags> are passed to
2460 C<gv_fetchpv>. If C<GV_ADD> is set and the
2461 Perl variable does not exist then it will be created. If C<flags> is zero
2462 and the variable does not exist then NULL is returned.
2468 Perl_get_sv(pTHX_ const char *name, I32 flags)
2472 PERL_ARGS_ASSERT_GET_SV;
2474 gv = gv_fetchpv(name, flags, SVt_PV);
2481 =head1 Array Manipulation Functions
2483 =for apidoc p||get_av
2485 Returns the AV of the specified Perl global or package array with the given
2486 name (so it won't work on lexical variables). C<flags> are passed
2487 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2488 Perl variable does not exist then it will be created. If C<flags> is zero
2489 and the variable does not exist then NULL is returned.
2491 Perl equivalent: C<@{"$name"}>.
2497 Perl_get_av(pTHX_ const char *name, I32 flags)
2499 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2501 PERL_ARGS_ASSERT_GET_AV;
2511 =head1 Hash Manipulation Functions
2513 =for apidoc p||get_hv
2515 Returns the HV of the specified Perl hash. C<flags> are passed to
2516 C<gv_fetchpv>. If C<GV_ADD> is set and the
2517 Perl variable does not exist then it will be created. If C<flags> is zero
2518 and the variable does not exist then NULL is returned.
2524 Perl_get_hv(pTHX_ const char *name, I32 flags)
2526 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2528 PERL_ARGS_ASSERT_GET_HV;
2538 =head1 CV Manipulation Functions
2540 =for apidoc p||get_cvn_flags
2542 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2543 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2544 exist then it will be declared (which has the same effect as saying
2545 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2546 then NULL is returned.
2548 =for apidoc p||get_cv
2550 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2556 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2558 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2560 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2562 /* XXX this is probably not what they think they're getting.
2563 * It has the same effect as "sub name;", i.e. just a forward
2565 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2566 return newSTUB(gv,0);
2573 /* Nothing in core calls this now, but we can't replace it with a macro and
2574 move it to mathoms.c as a macro would evaluate name twice. */
2576 Perl_get_cv(pTHX_ const char *name, I32 flags)
2578 PERL_ARGS_ASSERT_GET_CV;
2580 return get_cvn_flags(name, strlen(name), flags);
2583 /* Be sure to refetch the stack pointer after calling these routines. */
2587 =head1 Callback Functions
2589 =for apidoc p||call_argv
2591 Performs a callback to the specified named and package-scoped Perl subroutine
2592 with C<argv> (a NULL-terminated array of strings) as arguments. See
2595 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2601 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2603 /* See G_* flags in cop.h */
2604 /* null terminated arg list */
2608 PERL_ARGS_ASSERT_CALL_ARGV;
2612 mXPUSHs(newSVpv(*argv,0));
2616 return call_pv(sub_name, flags);
2620 =for apidoc p||call_pv
2622 Performs a callback to the specified Perl sub. See L<perlcall>.
2628 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
2632 PERL_ARGS_ASSERT_CALL_PV;
2634 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2638 =for apidoc p||call_method
2640 Performs a callback to the specified Perl method. The blessed object must
2641 be on the stack. See L<perlcall>.
2647 Perl_call_method(pTHX_ const char *methname, I32 flags)
2648 /* name of the subroutine */
2649 /* See G_* flags in cop.h */
2653 PERL_ARGS_ASSERT_CALL_METHOD;
2655 len = strlen(methname);
2656 sv = flags & G_METHOD_NAMED
2657 ? sv_2mortal(newSVpvn_share(methname, len,0))
2658 : newSVpvn_flags(methname, len, SVs_TEMP);
2660 return call_sv(sv, flags | G_METHOD);
2663 /* May be called with any of a CV, a GV, or an SV containing the name. */
2665 =for apidoc p||call_sv
2667 Performs a callback to the Perl sub whose name is in the SV. See
2674 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2675 /* See G_* flags in cop.h */
2678 LOGOP myop; /* fake syntax tree node */
2683 bool oldcatch = CATCH_GET;
2685 OP* const oldop = PL_op;
2688 PERL_ARGS_ASSERT_CALL_SV;
2690 if (flags & G_DISCARD) {
2694 if (!(flags & G_WANT)) {
2695 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2700 Zero(&myop, 1, LOGOP);
2701 if (!(flags & G_NOARGS))
2702 myop.op_flags |= OPf_STACKED;
2703 myop.op_flags |= OP_GIMME_REVERSE(flags);
2707 EXTEND(PL_stack_sp, 1);
2708 if (!(flags & G_METHOD_NAMED))
2709 *++PL_stack_sp = sv;
2711 oldscope = PL_scopestack_ix;
2713 if (PERLDB_SUB && PL_curstash != PL_debstash
2714 /* Handle first BEGIN of -d. */
2715 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2716 /* Try harder, since this may have been a sighandler, thus
2717 * curstash may be meaningless. */
2718 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2719 && !(flags & G_NODEBUG))
2720 myop.op_private |= OPpENTERSUB_DB;
2722 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2723 Zero(&method_op, 1, METHOP);
2724 method_op.op_next = (OP*)&myop;
2725 PL_op = (OP*)&method_op;
2726 if ( flags & G_METHOD_NAMED ) {
2727 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2728 method_op.op_type = OP_METHOD_NAMED;
2729 method_op.op_u.op_meth_sv = sv;
2731 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2732 method_op.op_type = OP_METHOD;
2734 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2735 myop.op_type = OP_ENTERSUB;
2738 if (!(flags & G_EVAL)) {
2740 CALL_BODY_SUB((OP*)&myop);
2741 retval = PL_stack_sp - (PL_stack_base + oldmark);
2742 CATCH_SET(oldcatch);
2745 myop.op_other = (OP*)&myop;
2747 create_eval_scope(flags|G_FAKINGEVAL);
2755 CALL_BODY_SUB((OP*)&myop);
2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
2757 if (!(flags & G_KEEPERR)) {
2765 /* my_exit() was called */
2766 SET_CURSTASH(PL_defstash);
2770 NOT_REACHED; /* NOTREACHED */
2773 PL_restartjmpenv = NULL;
2774 PL_op = PL_restartop;
2778 PL_stack_sp = PL_stack_base + oldmark;
2779 if ((flags & G_WANT) == G_ARRAY)
2783 *++PL_stack_sp = &PL_sv_undef;
2788 if (PL_scopestack_ix > oldscope)
2789 delete_eval_scope();
2793 if (flags & G_DISCARD) {
2794 PL_stack_sp = PL_stack_base + oldmark;
2803 /* Eval a string. The G_EVAL flag is always assumed. */
2806 =for apidoc p||eval_sv
2808 Tells Perl to C<eval> the string in the SV. It supports the same flags
2809 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2815 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2817 /* See G_* flags in cop.h */
2821 UNOP myop; /* fake syntax tree node */
2822 VOL I32 oldmark = SP - PL_stack_base;
2825 OP* const oldop = PL_op;
2828 PERL_ARGS_ASSERT_EVAL_SV;
2830 if (flags & G_DISCARD) {
2837 Zero(&myop, 1, UNOP);
2838 EXTEND(PL_stack_sp, 1);
2839 *++PL_stack_sp = sv;
2841 if (!(flags & G_NOARGS))
2842 myop.op_flags = OPf_STACKED;
2843 myop.op_type = OP_ENTEREVAL;
2844 myop.op_flags |= OP_GIMME_REVERSE(flags);
2845 if (flags & G_KEEPERR)
2846 myop.op_flags |= OPf_SPECIAL;
2848 if (flags & G_RE_REPARSING)
2849 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2851 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2852 * before a PUSHEVAL, which corrupts the stack after a croak */
2853 TAINT_PROPER("eval_sv()");
2859 if (PL_op == (OP*)(&myop)) {
2860 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2862 goto fail; /* failed in compilation */
2865 retval = PL_stack_sp - (PL_stack_base + oldmark);
2866 if (!(flags & G_KEEPERR)) {
2874 /* my_exit() was called */
2875 SET_CURSTASH(PL_defstash);
2879 NOT_REACHED; /* NOTREACHED */
2882 PL_restartjmpenv = NULL;
2883 PL_op = PL_restartop;
2888 PL_stack_sp = PL_stack_base + oldmark;
2889 if ((flags & G_WANT) == G_ARRAY)
2893 *++PL_stack_sp = &PL_sv_undef;
2899 if (flags & G_DISCARD) {
2900 PL_stack_sp = PL_stack_base + oldmark;
2910 =for apidoc p||eval_pv
2912 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2918 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2920 SV* sv = newSVpv(p, 0);
2922 PERL_ARGS_ASSERT_EVAL_PV;
2924 eval_sv(sv, G_SCALAR);
2933 /* just check empty string or undef? */
2934 if (croak_on_error) {
2935 SV * const errsv = ERRSV;
2936 if(SvTRUE_NN(errsv))
2937 /* replace with croak_sv? */
2938 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2944 /* Require a module. */
2947 =head1 Embedding Functions
2949 =for apidoc p||require_pv
2951 Tells Perl to C<require> the file named by the string argument. It is
2952 analogous to the Perl code C<eval "require '$file'">. It's even
2953 implemented that way; consider using load_module instead.
2958 Perl_require_pv(pTHX_ const char *pv)
2963 PERL_ARGS_ASSERT_REQUIRE_PV;
2965 PUSHSTACKi(PERLSI_REQUIRE);
2966 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2967 eval_sv(sv_2mortal(sv), G_DISCARD);
2972 S_usage(pTHX) /* XXX move this out into a module ? */
2974 /* This message really ought to be max 23 lines.
2975 * Removed -h because the user already knows that option. Others? */
2977 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2978 minimum of 509 character string literals. */
2979 static const char * const usage_msg[] = {
2980 " -0[octal] specify record separator (\\0, if no argument)\n"
2981 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2982 " -C[number/list] enables the listed Unicode features\n"
2983 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2984 " -d[:debugger] run program under debugger\n"
2985 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2986 " -e program one line of program (several -e's allowed, omit programfile)\n"
2987 " -E program like -e, but enables all optional features\n"
2988 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2989 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2990 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2991 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2992 " -l[octal] enable line ending processing, specifies line terminator\n"
2993 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2994 " -n assume \"while (<>) { ... }\" loop around program\n"
2995 " -p assume loop like -n but print line also, like sed\n"
2996 " -s enable rudimentary parsing for switches after programfile\n"
2997 " -S look for programfile using PATH environment variable\n",
2998 " -t enable tainting warnings\n"
2999 " -T enable tainting checks\n"
3000 " -u dump core after parsing program\n"
3001 " -U allow unsafe operations\n"
3002 " -v print version, patchlevel and license\n"
3003 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3004 " -w enable many useful warnings\n"
3005 " -W enable all warnings\n"
3006 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3007 " -X disable all warnings\n"
3009 "Run 'perldoc perl' for more help with Perl.\n\n",
3012 const char * const *p = usage_msg;
3013 PerlIO *out = PerlIO_stdout();
3016 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3019 PerlIO_puts(out, *p++);
3023 /* convert a string of -D options (or digits) into an int.
3024 * sets *s to point to the char after the options */
3028 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3030 static const char * const usage_msgd[] = {
3031 " Debugging flag values: (see also -d)\n"
3032 " p Tokenizing and parsing (with v, displays parse stack)\n"
3033 " s Stack snapshots (with v, displays all stacks)\n"
3034 " l Context (loop) stack processing\n"
3035 " t Trace execution\n"
3036 " o Method and overloading resolution\n",
3037 " c String/numeric conversions\n"
3038 " P Print profiling info, source file input state\n"
3039 " m Memory and SV allocation\n"
3040 " f Format processing\n"
3041 " r Regular expression parsing and execution\n"
3042 " x Syntax tree dump\n",
3043 " u Tainting checks\n"
3044 " H Hash dump -- usurps values()\n"
3045 " X Scratchpad allocation\n"
3047 " S Op slab allocation\n"
3049 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3050 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3051 " v Verbose: use in conjunction with other flags\n"
3052 " C Copy On Write\n"
3053 " A Consistency checks on internal structures\n"
3054 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3055 " M trace smart match resolution\n"
3056 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3057 " L trace some locale setting information--for Perl core development\n",
3062 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3065 /* if adding extra options, remember to update DEBUG_MASK */
3066 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3068 for (; isWORDCHAR(**s); (*s)++) {
3069 const char * const d = strchr(debopts,**s);
3071 uv |= 1 << (d - debopts);
3072 else if (ckWARN_d(WARN_DEBUGGING))
3073 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3074 "invalid option -D%c, use -D'' to see choices\n", **s);
3077 else if (isDIGIT(**s)) {
3079 if (grok_atoUV(*s, &uv, &e))
3081 for (; isWORDCHAR(**s); (*s)++) ;
3083 else if (givehelp) {
3084 const char *const *p = usage_msgd;
3085 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3087 return (int)uv; /* ignore any UV->int conversion loss */
3091 /* This routine handles any switches that can be given during run */
3094 Perl_moreswitches(pTHX_ const char *s)
3098 const char option = *s; /* used to remember option in -m/-M code */
3100 PERL_ARGS_ASSERT_MORESWITCHES;
3108 SvREFCNT_dec(PL_rs);
3109 if (s[1] == 'x' && s[2]) {
3110 const char *e = s+=2;
3116 flags = PERL_SCAN_SILENT_ILLDIGIT;
3117 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3118 if (s + numlen < e) {
3119 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3123 PL_rs = newSVpvs("");
3124 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3125 tmps = (U8*)SvPVX(PL_rs);
3126 uvchr_to_utf8(tmps, rschar);
3127 SvCUR_set(PL_rs, UNISKIP(rschar));
3132 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3133 if (rschar & ~((U8)~0))
3134 PL_rs = &PL_sv_undef;
3135 else if (!rschar && numlen >= 2)
3136 PL_rs = newSVpvs("");
3138 char ch = (char)rschar;
3139 PL_rs = newSVpvn(&ch, 1);
3142 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3147 PL_unicode = parse_unicode_opts( (const char **)&s );
3148 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3156 while (*s && !isSPACE(*s)) ++s;
3157 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3169 forbid_setid('d', FALSE);
3172 /* -dt indicates to the debugger that threads will be used */
3173 if (*s == 't' && !isWORDCHAR(s[1])) {
3175 my_setenv("PERL5DB_THREADED", "1");
3178 /* The following permits -d:Mod to accepts arguments following an =
3179 in the fashion that -MSome::Mod does. */
3180 if (*s == ':' || *s == '=') {
3187 sv = newSVpvs("no Devel::");
3189 sv = newSVpvs("use Devel::");
3193 end = s + strlen(s);
3195 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3196 while(isWORDCHAR(*s) || *s==':') ++s;
3198 sv_catpvn(sv, start, end - start);
3200 sv_catpvn(sv, start, s-start);
3201 /* Don't use NUL as q// delimiter here, this string goes in the
3203 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3206 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3210 PL_perldb = PERLDB_ALL;
3217 forbid_setid('D', FALSE);
3219 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3220 #else /* !DEBUGGING */
3221 if (ckWARN_d(WARN_DEBUGGING))
3222 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3223 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3224 for (s++; isWORDCHAR(*s); s++) ;
3227 NOT_REACHED; /* NOTREACHED */
3231 NOT_REACHED; /* NOTREACHED */
3234 Safefree(PL_inplace);
3235 #if defined(__CYGWIN__) /* do backup extension automagically */
3236 if (*(s+1) == '\0') {
3237 PL_inplace = savepvs(".bak");
3240 #endif /* __CYGWIN__ */
3242 const char * const start = ++s;
3243 while (*s && !isSPACE(*s))
3246 PL_inplace = savepvn(start, s - start);
3250 if (*s == '-') /* Additional switches on #! line. */
3254 case 'I': /* -I handled both here and in parse_body() */
3255 forbid_setid('I', FALSE);
3257 while (*s && isSPACE(*s))
3262 /* ignore trailing spaces (possibly followed by other switches) */
3264 for (e = p; *e && !isSPACE(*e); e++) ;
3268 } while (*p && *p != '-');
3270 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3276 Perl_croak(aTHX_ "No directory specified for -I");
3282 SvREFCNT_dec(PL_ors_sv);
3288 PL_ors_sv = newSVpvs("\n");
3289 numlen = 3 + (*s == '0');
3290 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3294 if (RsPARA(PL_rs)) {
3295 PL_ors_sv = newSVpvs("\n\n");
3298 PL_ors_sv = newSVsv(PL_rs);
3303 forbid_setid('M', FALSE); /* XXX ? */
3306 forbid_setid('m', FALSE); /* XXX ? */
3311 const char *use = "use ";
3313 /* -M-foo == 'no foo' */
3314 /* Leading space on " no " is deliberate, to make both
3315 possibilities the same length. */
3316 if (*s == '-') { use = " no "; ++s; }
3317 sv = newSVpvn(use,4);
3319 /* We allow -M'Module qw(Foo Bar)' */
3320 while(isWORDCHAR(*s) || *s==':') {
3329 Perl_croak(aTHX_ "Module name required with -%c option",
3332 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3333 "contains single ':'",
3334 (int)(s - start), start, option);
3335 end = s + strlen(s);
3337 sv_catpvn(sv, start, end - start);
3338 if (option == 'm') {
3340 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3341 sv_catpvs( sv, " ()");
3344 sv_catpvn(sv, start, s-start);
3345 /* Use NUL as q''-delimiter. */
3346 sv_catpvs(sv, " split(/,/,q\0");
3348 sv_catpvn(sv, s, end - s);
3349 sv_catpvs(sv, "\0)");
3352 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3355 Perl_croak(aTHX_ "Missing argument to -%c", option);
3366 forbid_setid('s', FALSE);
3367 PL_doswitches = TRUE;
3372 #if defined(SILENT_NO_TAINT_SUPPORT)
3373 /* silently ignore */
3374 #elif defined(NO_TAINT_SUPPORT)
3375 Perl_croak_nocontext("This perl was compiled without taint support. "
3376 "Cowardly refusing to run with -t or -T flags");
3384 PL_do_undump = TRUE;
3394 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3395 PL_dowarn |= G_WARN_ON;
3400 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3401 if (!specialWARN(PL_compiling.cop_warnings))
3402 PerlMemShared_free(PL_compiling.cop_warnings);
3403 PL_compiling.cop_warnings = pWARN_ALL ;
3407 PL_dowarn = G_WARN_ALL_OFF;
3408 if (!specialWARN(PL_compiling.cop_warnings))
3409 PerlMemShared_free(PL_compiling.cop_warnings);
3410 PL_compiling.cop_warnings = pWARN_NONE ;
3417 if (s[0] == '-') /* Additional switches on #! line. */
3422 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3428 #ifdef ALTERNATE_SHEBANG
3429 case 'S': /* OS/2 needs -S on "extproc" line. */
3432 case 'e': case 'f': case 'x': case 'E':
3433 #ifndef ALTERNATE_SHEBANG
3437 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3440 "Unrecognized switch: -%.1s (-h will show valid options)",s
3450 PerlIO * PIO_stdout;
3452 const char * const level_str = "v" PERL_VERSION_STRING;
3453 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3454 #ifdef PERL_PATCHNUM
3456 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3457 static const char num [] = PERL_PATCHNUM "*";
3459 static const char num [] = PERL_PATCHNUM;
3462 const STRLEN num_len = sizeof(num)-1;
3463 /* A very advanced compiler would fold away the strnEQ
3464 and this whole conditional, but most (all?) won't do it.
3465 SV level could also be replaced by with preprocessor
3468 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3469 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3470 of the interp so it might contain format characters
3472 level = newSVpvn(num, num_len);
3474 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3478 SV* level = newSVpvn(level_str, level_len);
3479 #endif /* #ifdef PERL_PATCHNUM */
3480 PIO_stdout = PerlIO_stdout();
3481 PerlIO_printf(PIO_stdout,
3482 "\nThis is perl " STRINGIFY(PERL_REVISION)
3483 ", version " STRINGIFY(PERL_VERSION)
3484 ", subversion " STRINGIFY(PERL_SUBVERSION)
3485 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3487 SvREFCNT_dec_NN(level);
3489 #if defined(LOCAL_PATCH_COUNT)
3490 if (LOCAL_PATCH_COUNT > 0)
3491 PerlIO_printf(PIO_stdout,
3492 "\n(with %d registered patch%s, "
3493 "see perl -V for more detail)",
3495 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3498 PerlIO_printf(PIO_stdout,
3499 "\n\nCopyright 1987-2015, Larry Wall\n");
3501 PerlIO_printf(PIO_stdout,
3502 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3505 PerlIO_printf(PIO_stdout,
3506 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3507 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3510 PerlIO_printf(PIO_stdout,
3511 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3512 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3515 PerlIO_printf(PIO_stdout,
3516 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3519 PerlIO_printf(PIO_stdout,
3520 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3523 PerlIO_printf(PIO_stdout,
3524 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3527 PerlIO_printf(PIO_stdout,
3528 "WINCE port by Rainer Keuchel, 2001-2002\n"
3529 "Built on " __DATE__ " " __TIME__ "\n\n");
3532 #ifdef __SYMBIAN32__
3533 PerlIO_printf(PIO_stdout,
3534 "Symbian port by Nokia, 2004-2005\n");
3536 #ifdef BINARY_BUILD_NOTICE
3537 BINARY_BUILD_NOTICE;
3539 PerlIO_printf(PIO_stdout,
3541 Perl may be copied only under the terms of either the Artistic License or the\n\
3542 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3543 Complete documentation for Perl, including FAQ lists, should be found on\n\
3544 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3545 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3549 /* compliments of Tom Christiansen */
3551 /* unexec() can be found in the Gnu emacs distribution */
3552 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3555 #include <lib$routines.h>
3559 Perl_my_unexec(pTHX)
3562 SV * prog = newSVpv(BIN_EXP, 0);
3563 SV * file = newSVpv(PL_origfilename, 0);
3567 sv_catpvs(prog, "/perl");
3568 sv_catpvs(file, ".perldump");
3570 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3571 /* unexec prints msg to stderr in case of failure */
3572 PerlProc_exit(status);
3574 PERL_UNUSED_CONTEXT;
3576 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3577 # elif defined(WIN32) || defined(__CYGWIN__)
3578 Perl_croak_nocontext("dump is not supported");
3580 ABORT(); /* for use with undump */
3585 /* initialize curinterp */
3590 # define PERLVAR(prefix,var,type)
3591 # define PERLVARA(prefix,var,n,type)
3592 # if defined(PERL_IMPLICIT_CONTEXT)
3593 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3594 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3596 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3597 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3599 # include "intrpvar.h"
3605 # define PERLVAR(prefix,var,type)
3606 # define PERLVARA(prefix,var,n,type)
3607 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3608 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3609 # include "intrpvar.h"
3619 S_init_main_stash(pTHX)
3623 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3624 /* We know that the string "main" will be in the global shared string
3625 table, so it's a small saving to use it rather than allocate another
3627 PL_curstname = newSVpvs_share("main");
3628 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3629 /* If we hadn't caused another reference to "main" to be in the shared
3630 string table above, then it would be worth reordering these two,
3631 because otherwise all we do is delete "main" from it as a consequence
3632 of the SvREFCNT_dec, only to add it again with hv_name_set */
3633 SvREFCNT_dec(GvHV(gv));
3634 hv_name_set(PL_defstash, "main", 4, 0);
3635 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3637 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3639 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3640 GvMULTI_on(PL_incgv);
3641 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3642 SvREFCNT_inc_simple_void(PL_hintgv);
3643 GvMULTI_on(PL_hintgv);
3644 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3645 SvREFCNT_inc_simple_void(PL_defgv);
3646 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3647 SvREFCNT_inc_simple_void(PL_errgv);
3648 GvMULTI_on(PL_errgv);
3649 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3650 SvREFCNT_inc_simple_void(PL_replgv);
3651 GvMULTI_on(PL_replgv);
3652 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3653 #ifdef PERL_DONT_CREATE_GVSV
3654 (void)gv_SVadd(PL_errgv);
3656 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3658 SET_CURSTASH(PL_defstash);
3659 CopSTASH_set(&PL_compiling, PL_defstash);
3660 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3661 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3663 /* We must init $/ before switches are processed. */
3664 sv_setpvs(get_sv("/", GV_ADD), "\n");
3668 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3671 PerlIO *rsfp = NULL;
3675 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3678 PL_origfilename = savepvs("-e");
3683 /* if find_script() returns, it returns a malloc()-ed value */
3684 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3686 if (strnEQ(scriptname, "/dev/fd/", 8)
3687 && isDIGIT(scriptname[8])
3688 && grok_atoUV(scriptname + 8, &uv, &s)
3689 && uv <= PERL_INT_MAX
3694 * Tell apart "normal" usage of fdscript, e.g.
3695 * with bash on FreeBSD:
3696 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3697 * from usage in suidperl.
3698 * Does any "normal" usage leave garbage after the number???
3699 * Is it a mistake to use a similar /dev/fd/ construct for
3704 * Be supersafe and do some sanity-checks.
3705 * Still, can we be sure we got the right thing?
3708 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3711 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3713 scriptname = savepv(s + 1);
3714 Safefree(PL_origfilename);
3715 PL_origfilename = (char *)scriptname;
3720 CopFILE_free(PL_curcop);
3721 CopFILE_set(PL_curcop, PL_origfilename);
3722 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3723 scriptname = (char *)"";
3724 if (fdscript >= 0) {
3725 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3727 else if (!*scriptname) {
3728 forbid_setid(0, *suidscript);
3732 #ifdef FAKE_BIT_BUCKET
3733 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3734 * is called) and still have the "-e" work. (Believe it or not,
3735 * a /dev/null is required for the "-e" to work because source
3736 * filter magic is used to implement it. ) This is *not* a general
3737 * replacement for a /dev/null. What we do here is create a temp
3738 * file (an empty file), open up that as the script, and then
3739 * immediately close and unlink it. Close enough for jazz. */
3740 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3741 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3742 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3743 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3744 FAKE_BIT_BUCKET_TEMPLATE
3746 const char * const err = "Failed to create a fake bit bucket";
3747 if (strEQ(scriptname, BIT_BUCKET)) {
3748 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3749 int old_umask = umask(0600);
3750 int tmpfd = mkstemp(tmpname);
3753 scriptname = tmpname;
3756 Perl_croak(aTHX_ err);
3759 scriptname = mktemp(tmpname);
3761 Perl_croak(aTHX_ err);
3766 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3767 #ifdef FAKE_BIT_BUCKET
3768 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3769 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3770 && strlen(scriptname) == sizeof(tmpname) - 1) {
3773 scriptname = BIT_BUCKET;
3777 /* PSz 16 Sep 03 Keep neat error message */
3779 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3781 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3782 CopFILE(PL_curcop), Strerror(errno));
3784 fd = PerlIO_fileno(rsfp);
3785 #if defined(HAS_FCNTL) && defined(F_SETFD)
3787 /* ensure close-on-exec */
3788 if (fcntl(fd, F_SETFD, 1) < 0) {
3789 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3790 CopFILE(PL_curcop), Strerror(errno));
3796 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3797 && S_ISDIR(tmpstatbuf.st_mode)))
3798 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3806 * I_SYSSTATVFS HAS_FSTATVFS
3808 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3809 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3810 * here so that metaconfig picks them up. */
3813 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3814 /* Don't even need this function. */
3817 S_validate_suid(pTHX_ PerlIO *rsfp)
3819 const Uid_t my_uid = PerlProc_getuid();
3820 const Uid_t my_euid = PerlProc_geteuid();
3821 const Gid_t my_gid = PerlProc_getgid();
3822 const Gid_t my_egid = PerlProc_getegid();
3824 PERL_ARGS_ASSERT_VALIDATE_SUID;
3826 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3828 int fd = PerlIO_fileno(rsfp);
3830 Perl_croak(aTHX_ "Illegal suidscript");
3832 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3833 Perl_croak(aTHX_ "Illegal suidscript");
3836 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3838 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3841 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3842 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3843 /* not set-id, must be wrapped */
3846 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3849 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3854 PERL_ARGS_ASSERT_FIND_BEGINNING;
3856 /* skip forward in input to the real script? */
3859 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3860 Perl_croak(aTHX_ "No Perl script found in input\n");
3862 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3863 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3864 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3866 while (*s == ' ' || *s == '\t') s++;
3868 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3869 || s2[-1] == '_') s2--;
3870 if (strnEQ(s2-4,"perl",4))
3871 while ((s = moreswitches(s)))
3880 /* no need to do anything here any more if we don't
3882 #ifndef NO_TAINT_SUPPORT
3883 const Uid_t my_uid = PerlProc_getuid();
3884 const Uid_t my_euid = PerlProc_geteuid();
3885 const Gid_t my_gid = PerlProc_getgid();
3886 const Gid_t my_egid = PerlProc_getegid();
3888 PERL_UNUSED_CONTEXT;
3890 /* Should not happen: */
3891 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3892 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3896 * Should go by suidscript, not uid!=euid: why disallow
3897 * system("ls") in scripts run from setuid things?
3898 * Or, is this run before we check arguments and set suidscript?
3899 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3900 * (We never have suidscript, can we be sure to have fdscript?)
3901 * Or must then go by UID checks? See comments in forbid_setid also.
3905 /* This is used very early in the lifetime of the program,
3906 * before even the options are parsed, so PL_tainting has
3907 * not been initialized properly. */
3909 Perl_doing_taint(int argc, char *argv[], char *envp[])
3911 #ifndef PERL_IMPLICIT_SYS
3912 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3913 * before we have an interpreter-- and the whole point of this
3914 * function is to be called at such an early stage. If you are on
3915 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3916 * "tainted because running with altered effective ids', you'll
3917 * have to add your own checks somewhere in here. The two most
3918 * known samples of 'implicitness' are Win32 and NetWare, neither
3919 * of which has much of concept of 'uids'. */
3920 Uid_t uid = PerlProc_getuid();
3921 Uid_t euid = PerlProc_geteuid();
3922 Gid_t gid = PerlProc_getgid();
3923 Gid_t egid = PerlProc_getegid();
3930 if (uid && (euid != uid || egid != gid))
3932 #endif /* !PERL_IMPLICIT_SYS */
3933 /* This is a really primitive check; environment gets ignored only
3934 * if -T are the first chars together; otherwise one gets
3935 * "Too late" message. */
3936 if ( argc > 1 && argv[1][0] == '-'
3937 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3942 /* Passing the flag as a single char rather than a string is a slight space
3943 optimisation. The only message that isn't /^-.$/ is
3944 "program input from stdin", which is substituted in place of '\0', which
3945 could never be a command line flag. */
3947 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3949 char string[3] = "-x";
3950 const char *message = "program input from stdin";
3952 PERL_UNUSED_CONTEXT;
3958 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3959 if (PerlProc_getuid() != PerlProc_geteuid())
3960 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3961 if (PerlProc_getgid() != PerlProc_getegid())
3962 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3963 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3965 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3969 Perl_init_dbargs(pTHX)
3971 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3976 /* Someone has already created it.
3977 It might have entries, and if we just turn off AvREAL(), they will
3978 "leak" until global destruction. */
3980 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3981 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3983 AvREIFY_only(PL_dbargs);
3987 Perl_init_debugger(pTHX)
3989 HV * const ostash = PL_curstash;
3992 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3994 Perl_init_dbargs(aTHX);
3995 PL_DBgv = MUTABLE_GV(
3996 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3998 PL_DBline = MUTABLE_GV(
3999 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4001 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4002 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4004 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4005 if (!SvIOK(PL_DBsingle))
4006 sv_setiv(PL_DBsingle, 0);
4007 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4008 mg->mg_private = DBVARMG_SINGLE;
4009 SvSETMAGIC(PL_DBsingle);
4011 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4012 if (!SvIOK(PL_DBtrace))
4013 sv_setiv(PL_DBtrace, 0);
4014 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4015 mg->mg_private = DBVARMG_TRACE;
4016 SvSETMAGIC(PL_DBtrace);
4018 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4019 if (!SvIOK(PL_DBsignal))
4020 sv_setiv(PL_DBsignal, 0);
4021 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4022 mg->mg_private = DBVARMG_SIGNAL;
4023 SvSETMAGIC(PL_DBsignal);
4025 SvREFCNT_dec(PL_curstash);
4026 PL_curstash = ostash;
4029 #ifndef STRESS_REALLOC
4030 #define REASONABLE(size) (size)
4031 #define REASONABLE_but_at_least(size,min) (size)
4033 #define REASONABLE(size) (1) /* unreasonable */
4034 #define REASONABLE_but_at_least(size,min) (min)
4038 Perl_init_stacks(pTHX)
4040 /* start with 128-item stack and 8K cxstack */
4041 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4042 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4043 PL_curstackinfo->si_type = PERLSI_MAIN;
4044 PL_curstack = PL_curstackinfo->si_stack;
4045 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4047 PL_stack_base = AvARRAY(PL_curstack);
4048 PL_stack_sp = PL_stack_base;
4049 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4051 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4054 PL_tmps_max = REASONABLE(128);
4056 Newx(PL_markstack,REASONABLE(32),I32);
4057 PL_markstack_ptr = PL_markstack;
4058 PL_markstack_max = PL_markstack + REASONABLE(32);
4062 Newx(PL_scopestack,REASONABLE(32),I32);
4064 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4066 PL_scopestack_ix = 0;
4067 PL_scopestack_max = REASONABLE(32);
4069 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4070 PL_savestack_ix = 0;
4071 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4079 while (PL_curstackinfo->si_next)
4080 PL_curstackinfo = PL_curstackinfo->si_next;
4081 while (PL_curstackinfo) {
4082 PERL_SI *p = PL_curstackinfo->si_prev;
4083 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4084 Safefree(PL_curstackinfo->si_cxstack);
4085 Safefree(PL_curstackinfo);
4086 PL_curstackinfo = p;
4088 Safefree(PL_tmps_stack);
4089 Safefree(PL_markstack);
4090 Safefree(PL_scopestack);
4092 Safefree(PL_scopestack_name);
4094 Safefree(PL_savestack);
4098 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4100 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4101 AV *const isa = GvAVn(gv);
4104 PERL_ARGS_ASSERT_POPULATE_ISA;
4106 if(AvFILLp(isa) != -1)
4109 /* NOTE: No support for tied ISA */
4111 va_start(args, len);
4113 const char *const parent = va_arg(args, const char*);
4118 parent_len = va_arg(args, size_t);
4120 /* Arguments are supplied with a trailing :: */
4121 assert(parent_len > 2);
4122 assert(parent[parent_len - 1] == ':');
4123 assert(parent[parent_len - 2] == ':');
4124 av_push(isa, newSVpvn(parent, parent_len - 2));
4125 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4132 S_init_predump_symbols(pTHX)
4137 sv_setpvs(get_sv("\"", GV_ADD), " ");
4138 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4141 /* Historically, PVIOs were blessed into IO::Handle, unless
4142 FileHandle was loaded, in which case they were blessed into
4143 that. Action at a distance.
4144 However, if we simply bless into IO::Handle, we break code
4145 that assumes that PVIOs will have (among others) a seek
4146 method. IO::File inherits from IO::Handle and IO::Seekable,
4147 and provides the needed methods. But if we simply bless into
4148 it, then we break code that assumed that by loading
4149 IO::Handle, *it* would work.
4150 So a compromise is to set up the correct @IO::File::ISA,
4151 so that code that does C<use IO::Handle>; will still work.
4154 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4155 STR_WITH_LEN("IO::Handle::"),
4156 STR_WITH_LEN("IO::Seekable::"),
4157 STR_WITH_LEN("Exporter::"),
4160 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4161 GvMULTI_on(PL_stdingv);
4162 io = GvIOp(PL_stdingv);
4163 IoTYPE(io) = IoTYPE_RDONLY;
4164 IoIFP(io) = PerlIO_stdin();
4165 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4167 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4169 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4172 IoTYPE(io) = IoTYPE_WRONLY;
4173 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4175 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4177 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4179 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4180 GvMULTI_on(PL_stderrgv);
4181 io = GvIOp(PL_stderrgv);
4182 IoTYPE(io) = IoTYPE_WRONLY;
4183 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4184 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4186 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4188 PL_statname = newSVpvs(""); /* last filename we did stat on */
4192 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4194 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4196 argc--,argv++; /* skip name of script */
4197 if (PL_doswitches) {
4198 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4202 if (argv[0][1] == '-' && !argv[0][2]) {
4206 if ((s = strchr(argv[0], '='))) {
4207 const char *const start_name = argv[0] + 1;
4208 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4209 TRUE, SVt_PV)), s + 1);
4212 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4215 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4216 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4217 GvMULTI_on(PL_argvgv);
4218 av_clear(GvAVn(PL_argvgv));
4219 for (; argc > 0; argc--,argv++) {
4220 SV * const sv = newSVpv(argv[0],0);
4221 av_push(GvAV(PL_argvgv),sv);
4222 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4223 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4226 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4227 (void)sv_utf8_decode(sv);
4231 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4232 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4233 "-i used with no filenames on the command line, "
4234 "reading from STDIN");
4238 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4245 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4247 PL_toptarget = newSV_type(SVt_PVIV);
4248 sv_setpvs(PL_toptarget, "");
4249 PL_bodytarget = newSV_type(SVt_PVIV);
4250 sv_setpvs(PL_bodytarget, "");
4251 PL_formtarget = PL_bodytarget;
4255 init_argv_symbols(argc,argv);
4257 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4258 sv_setpv(GvSV(tmpgv),PL_origfilename);
4260 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4262 bool env_is_not_environ;
4263 SvREFCNT_inc_simple_void_NN(PL_envgv);
4264 GvMULTI_on(PL_envgv);
4265 hv = GvHVn(PL_envgv);
4266 hv_magic(hv, NULL, PERL_MAGIC_env);
4268 #ifdef USE_ENVIRON_ARRAY
4269 /* Note that if the supplied env parameter is actually a copy
4270 of the global environ then it may now point to free'd memory
4271 if the environment has been modified since. To avoid this
4272 problem we treat env==NULL as meaning 'use the default'
4276 env_is_not_environ = env != environ;
4277 if (env_is_not_environ
4278 # ifdef USE_ITHREADS
4279 && PL_curinterp == aTHX
4288 for (; *env; env++) {
4291 if (!(s = strchr(old_var,'=')) || s == old_var)
4294 #if defined(MSDOS) && !defined(DJGPP)
4296 (void)strupr(old_var);
4299 sv = newSVpv(s+1, 0);
4300 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4301 if (env_is_not_environ)
4305 #endif /* USE_ENVIRON_ARRAY */
4306 #endif /* !PERL_MICRO */
4310 /* touch @F array to prevent spurious warnings 20020415 MJD */
4312 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4317 S_init_perllib(pTHX)
4320 const char *perl5lib = NULL;
4323 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4327 if (!TAINTING_get) {
4329 perl5lib = PerlEnv_getenv("PERL5LIB");
4331 * It isn't possible to delete an environment variable with
4332 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4333 * case we treat PERL5LIB as undefined if it has a zero-length value.
4335 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4336 if (perl5lib && *perl5lib != '\0')
4340 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4342 s = PerlEnv_getenv("PERLLIB");
4344 incpush_use_sep(s, 0, 0);
4347 /* Treat PERL5?LIB as a possible search list logical name -- the
4348 * "natural" VMS idiom for a Unix path string. We allow each
4349 * element to be a set of |-separated directories for compatibility.
4353 if (my_trnlnm("PERL5LIB",buf,0))
4355 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4356 } while (my_trnlnm("PERL5LIB",buf,++idx));
4358 while (my_trnlnm("PERLLIB",buf,idx++))
4359 incpush_use_sep(buf, 0, 0);
4364 #ifndef PERL_IS_MINIPERL
4365 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4366 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4368 /* Use the ~-expanded versions of APPLLIB (undocumented),
4369 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4372 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4373 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4377 /* sitearch is always relative to sitelib on Windows for
4378 * DLL-based path intuition to work correctly */
4379 # if !defined(WIN32)
4380 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4381 INCPUSH_CAN_RELOCATE);
4387 /* this picks up sitearch as well */
4388 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4390 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4396 #ifdef PERL_VENDORARCH_EXP
4397 /* vendorarch is always relative to vendorlib on Windows for
4398 * DLL-based path intuition to work correctly */
4399 # if !defined(WIN32)
4400 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4401 INCPUSH_CAN_RELOCATE);
4405 #ifdef PERL_VENDORLIB_EXP
4407 /* this picks up vendorarch as well */
4408 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4410 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4412 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4413 INCPUSH_CAN_RELOCATE);
4418 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4422 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4426 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4428 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4431 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4433 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4437 #ifdef PERL_OTHERLIBDIRS
4438 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4439 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4440 |INCPUSH_CAN_RELOCATE);
4443 if (!TAINTING_get) {
4446 * It isn't possible to delete an environment variable with
4447 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4448 * case we treat PERL5LIB as undefined if it has a zero-length value.
4450 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4451 if (perl5lib && *perl5lib != '\0')
4455 incpush_use_sep(perl5lib, 0,
4456 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4458 /* Treat PERL5?LIB as a possible search list logical name -- the
4459 * "natural" VMS idiom for a Unix path string. We allow each
4460 * element to be a set of |-separated directories for compatibility.
4464 if (my_trnlnm("PERL5LIB",buf,0))
4466 incpush_use_sep(buf, 0,
4467 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4468 } while (my_trnlnm("PERL5LIB",buf,++idx));
4472 /* Use the ~-expanded versions of APPLLIB (undocumented),
4473 SITELIB and VENDORLIB for older versions
4476 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4477 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4480 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4481 /* Search for version-specific dirs below here */
4482 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4483 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4487 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4488 /* Search for version-specific dirs below here */
4489 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4490 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4493 #ifdef PERL_OTHERLIBDIRS
4494 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4495 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4496 |INCPUSH_CAN_RELOCATE);
4498 #endif /* !PERL_IS_MINIPERL */
4501 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4504 #if defined(DOSISH) || defined(__SYMBIAN32__)
4505 # define PERLLIB_SEP ';'
4508 # define PERLLIB_SEP '|'
4510 # define PERLLIB_SEP ':'
4513 #ifndef PERLLIB_MANGLE
4514 # define PERLLIB_MANGLE(s,n) (s)
4517 #ifndef PERL_IS_MINIPERL
4518 /* Push a directory onto @INC if it exists.
4519 Generate a new SV if we do this, to save needing to copy the SV we push
4522 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4526 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4528 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4529 S_ISDIR(tmpstatbuf.st_mode)) {
4531 dir = newSVsv(stem);
4533 /* Truncate dir back to stem. */
4534 SvCUR_set(dir, SvCUR(stem));
4541 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4543 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4546 PERL_ARGS_ASSERT_MAYBERELOCATE;
4549 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4550 defined to so something (in os2/os2.c), but the code has been
4551 this way, ignoring any possible changed of length, since
4552 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4554 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4560 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4562 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4563 sv_usepvn(libdir,unix,len);
4566 PerlIO_printf(Perl_error_log,
4567 "Failed to unixify @INC element \"%s\"\n",
4568 SvPV_nolen_const(libdir));
4572 /* Do the if() outside the #ifdef to avoid warnings about an unused
4575 #ifdef PERL_RELOCATABLE_INC
4577 * Relocatable include entries are marked with a leading .../
4580 * 0: Remove that leading ".../"
4581 * 1: Remove trailing executable name (anything after the last '/')
4582 * from the perl path to give a perl prefix
4584 * While the @INC element starts "../" and the prefix ends with a real
4585 * directory (ie not . or ..) chop that real directory off the prefix
4586 * and the leading "../" from the @INC element. ie a logical "../"
4588 * Finally concatenate the prefix and the remainder of the @INC element
4589 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4590 * generates /usr/local/lib/perl5
4592 const char *libpath = SvPVX(libdir);
4593 STRLEN libpath_len = SvCUR(libdir);
4594 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4596 SV * const caret_X = get_sv("\030", 0);
4597 /* Going to use the SV just as a scratch buffer holding a C
4603 /* $^X is *the* source of taint if tainting is on, hence
4604 SvPOK() won't be true. */
4606 assert(SvPOKp(caret_X));
4607 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4609 /* Firstly take off the leading .../
4610 If all else fail we'll do the paths relative to the current
4612 sv_chop(libdir, libpath + 4);
4613 /* Don't use SvPV as we're intentionally bypassing taining,
4614 mortal copies that the mg_get of tainting creates, and
4615 corruption that seems to come via the save stack.
4616 I guess that the save stack isn't correctly set up yet. */
4617 libpath = SvPVX(libdir);
4618 libpath_len = SvCUR(libdir);
4620 /* This would work more efficiently with memrchr, but as it's
4621 only a GNU extension we'd need to probe for it and
4622 implement our own. Not hard, but maybe not worth it? */
4624 prefix = SvPVX(prefix_sv);
4625 lastslash = strrchr(prefix, '/');
4627 /* First time in with the *lastslash = '\0' we just wipe off
4628 the trailing /perl from (say) /usr/foo/bin/perl
4632 while ((*lastslash = '\0'), /* Do that, come what may. */
4633 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4634 && (lastslash = strrchr(prefix, '/')))) {
4635 if (lastslash[1] == '\0'
4636 || (lastslash[1] == '.'
4637 && (lastslash[2] == '/' /* ends "/." */
4638 || (lastslash[2] == '/'
4639 && lastslash[3] == '/' /* or "/.." */
4641 /* Prefix ends "/" or "/." or "/..", any of which
4642 are fishy, so don't do any more logical cleanup.
4646 /* Remove leading "../" from path */
4649 /* Next iteration round the loop removes the last
4650 directory name from prefix by writing a '\0' in
4651 the while clause. */
4653 /* prefix has been terminated with a '\0' to the correct
4654 length. libpath points somewhere into the libdir SV.
4655 We need to join the 2 with '/' and drop the result into
4657 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4658 SvREFCNT_dec(libdir);
4659 /* And this is the new libdir. */
4662 (PerlProc_getuid() != PerlProc_geteuid() ||
4663 PerlProc_getgid() != PerlProc_getegid())) {
4664 /* Need to taint relocated paths if running set ID */
4665 SvTAINTED_on(libdir);
4668 SvREFCNT_dec(prefix_sv);
4676 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4678 #ifndef PERL_IS_MINIPERL
4679 const U8 using_sub_dirs
4680 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4681 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4682 const U8 add_versioned_sub_dirs
4683 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4684 const U8 add_archonly_sub_dirs
4685 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4686 #ifdef PERL_INC_VERSION_LIST
4687 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4690 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4691 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4692 AV *const inc = GvAVn(PL_incgv);
4694 PERL_ARGS_ASSERT_INCPUSH;
4697 /* Could remove this vestigial extra block, if we don't mind a lot of
4698 re-indenting diff noise. */
4700 SV *const libdir = mayberelocate(dir, len, flags);
4701 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4702 arranged to unshift #! line -I onto the front of @INC. However,
4703 -I can add version and architecture specific libraries, and they
4704 need to go first. The old code assumed that it was always
4705 pushing. Hence to make it work, need to push the architecture
4706 (etc) libraries onto a temporary array, then "unshift" that onto
4707 the front of @INC. */
4708 #ifndef PERL_IS_MINIPERL
4709 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4712 * BEFORE pushing libdir onto @INC we may first push version- and
4713 * archname-specific sub-directories.
4715 if (using_sub_dirs) {
4716 SV *subdir = newSVsv(libdir);
4717 #ifdef PERL_INC_VERSION_LIST
4718 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4719 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4720 const char * const *incver;
4723 if (add_versioned_sub_dirs) {
4724 /* .../version/archname if -d .../version/archname */
4725 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4726 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4728 /* .../version if -d .../version */
4729 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4730 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4733 #ifdef PERL_INC_VERSION_LIST
4735 for (incver = incverlist; *incver; incver++) {
4736 /* .../xxx if -d .../xxx */
4737 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4738 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4743 if (add_archonly_sub_dirs) {
4744 /* .../archname if -d .../archname */
4745 sv_catpvs(subdir, "/" ARCHNAME);
4746 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4750 assert (SvREFCNT(subdir) == 1);
4751 SvREFCNT_dec(subdir);
4753 #endif /* !PERL_IS_MINIPERL */
4754 /* finally add this lib directory at the end of @INC */
4756 #ifdef PERL_IS_MINIPERL
4757 const Size_t extra = 0;
4759 Size_t extra = av_tindex(av) + 1;
4761 av_unshift(inc, extra + push_basedir);
4763 av_store(inc, extra, libdir);
4764 #ifndef PERL_IS_MINIPERL
4766 /* av owns a reference, av_store() expects to be donated a
4767 reference, and av expects to be sane when it's cleared.
4768 If I wanted to be naughty and wrong, I could peek inside the
4769 implementation of av_clear(), realise that it uses
4770 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4771 and so directly steal from it (with a memcpy() to inc, and
4772 then memset() to NULL them out. But people copy code from the
4773 core expecting it to be best practise, so let's use the API.
4774 Although studious readers will note that I'm not checking any
4776 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4781 else if (push_basedir) {
4782 av_push(inc, libdir);
4785 if (!push_basedir) {
4786 assert (SvREFCNT(libdir) == 1);
4787 SvREFCNT_dec(libdir);
4793 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4797 /* This logic has been broken out from S_incpush(). It may be possible to
4800 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4802 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4803 * argument to incpush_use_sep. This allows creation of relocatable
4804 * Perl distributions that patch the binary at install time. Those
4805 * distributions will have to provide their own relocation tools; this
4806 * is not a feature otherwise supported by core Perl.
4808 #ifndef PERL_RELOCATABLE_INCPUSH
4815 /* Break at all separators */
4816 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4818 /* skip any consecutive separators */
4820 /* Uncomment the next line for PATH semantics */
4821 /* But you'll need to write tests */
4822 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4824 incpush(p, (STRLEN)(s - p), flags);
4829 incpush(p, (STRLEN)(end - p), flags);
4834 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4837 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4843 PERL_ARGS_ASSERT_CALL_LIST;
4845 while (av_tindex(paramList) >= 0) {
4846 cv = MUTABLE_CV(av_shift(paramList));
4848 if (paramList == PL_beginav) {
4849 /* save PL_beginav for compiler */
4850 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4852 else if (paramList == PL_checkav) {
4853 /* save PL_checkav for compiler */
4854 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4856 else if (paramList == PL_unitcheckav) {
4857 /* save PL_unitcheckav for compiler */
4858 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4868 (void)SvPV_const(atsv, len);
4870 PL_curcop = &PL_compiling;
4871 CopLINE_set(PL_curcop, oldline);
4872 if (paramList == PL_beginav)
4873 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4875 Perl_sv_catpvf(aTHX_ atsv,
4876 "%s failed--call queue aborted",
4877 paramList == PL_checkav ? "CHECK"
4878 : paramList == PL_initav ? "INIT"
4879 : paramList == PL_unitcheckav ? "UNITCHECK"
4881 while (PL_scopestack_ix > oldscope)
4884 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4891 /* my_exit() was called */
4892 while (PL_scopestack_ix > oldscope)
4895 SET_CURSTASH(PL_defstash);
4896 PL_curcop = &PL_compiling;
4897 CopLINE_set(PL_curcop, oldline);
4900 NOT_REACHED; /* NOTREACHED */
4903 PL_curcop = &PL_compiling;
4904 CopLINE_set(PL_curcop, oldline);
4907 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4916 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)
4944 /* We have been called to fall on our sword. The desired exit code
4945 * should be already set in STATUS_UNIX, but could be shifted over
4946 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4949 * If an error code has not been set, then force the issue.
4951 if (MY_POSIX_EXIT) {
4953 /* According to the die_exit.t tests, if errno is non-zero */
4954 /* It should be used for the error status. */
4956 if (errno == EVMSERR) {
4957 STATUS_NATIVE = vaxc$errno;
4960 /* According to die_exit.t tests, if the child_exit code is */
4961 /* also zero, then we need to exit with a code of 255 */
4962 if ((errno != 0) && (errno < 256))
4963 STATUS_UNIX_EXIT_SET(errno);
4964 else if (STATUS_UNIX < 255) {
4965 STATUS_UNIX_EXIT_SET(255);
4970 /* The exit code could have been set by $? or vmsish which
4971 * means that it may not have fatal set. So convert
4972 * success/warning codes to fatal with out changing
4973 * the POSIX status code. The severity makes VMS native
4974 * status handling work, while UNIX mode programs use the
4975 * the POSIX exit codes.
4977 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4978 STATUS_NATIVE &= STS$M_COND_ID;
4979 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4983 /* Traditionally Perl on VMS always expects a Fatal Error. */
4984 if (vaxc$errno & 1) {
4986 /* So force success status to failure */
4987 if (STATUS_NATIVE & 1)
4992 STATUS_UNIX = EINTR; /* In case something cares */
4997 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4999 /* Encode the severity code */
5000 severity = STATUS_NATIVE & STS$M_SEVERITY;
5001 STATUS_UNIX = (severity ? severity : 1) << 8;
5003 /* Perl expects this to be a fatal error */
5004 if (severity != STS$K_SEVERE)
5013 STATUS_UNIX_SET(errno);
5015 exitstatus = STATUS_UNIX >> 8;
5016 if (exitstatus & 255)
5017 STATUS_UNIX_SET(exitstatus);
5019 STATUS_UNIX_SET(255);
5022 if (PL_exit_flags & PERL_EXIT_ABORT) {
5025 if (PL_exit_flags & PERL_EXIT_WARN) {
5026 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5027 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5028 PL_exit_flags &= ~PERL_EXIT_ABORT;
5034 S_my_exit_jump(pTHX)
5037 SvREFCNT_dec(PL_e_script);
5041 POPSTACK_TO(PL_mainstack);
5049 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5051 const char * const p = SvPVX_const(PL_e_script);
5052 const char *nl = strchr(p, '\n');
5054 PERL_UNUSED_ARG(idx);
5055 PERL_UNUSED_ARG(maxlen);
5057 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5059 filter_del(read_e_script);
5062 sv_catpvn(buf_sv, p, nl-p);
5063 sv_chop(PL_e_script, nl);
5067 /* removes boilerplate code at the end of each boot_Module xsub */
5069 Perl_xs_boot_epilog(pTHX_ const U32 ax)
5072 call_list(PL_scopestack_ix, PL_unitcheckav);
5077 * ex: set ts=8 sts=4 sw=4 et: