4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
36 #include "charclass_invlists.h"
42 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
49 char control[CMSG_SPACE(sizeof(int))];
62 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
63 char *getenv (char *); /* Usually in <stdlib.h> */
66 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
68 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
69 # define validate_suid(rsfp) NOOP
71 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
74 #define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
80 #define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
85 S_init_tls_and_interp(PerlInterpreter *my_perl)
89 PERL_SET_INTERP(my_perl);
90 #if defined(USE_ITHREADS)
93 PERL_SET_THX(my_perl);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
226 PL_perl_destruct_level = 1;
228 PERL_UNUSED_ARG(my_perl);
229 if (PL_perl_destruct_level > 0)
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
234 #ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
240 SvREADONLY_on(&PL_sv_placeholder);
241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
244 #ifdef PERL_USES_PL_PIDSTATUS
245 PL_pidstatus = newHV();
248 PL_rs = newSVpvs("\n");
259 /* Keep LC_NUMERIC in the C locale for backwards compatibility for XS
260 * modules. (Core operations that need the underlying locale change to it
261 * temporarily). An explicit call to POSIX::setlocale() still will cause
262 * XS module failures, but this is how it has been for a long time [perl
264 SET_NUMERIC_STANDARD();
266 #if defined(LOCAL_PATCH_COUNT)
267 PL_localpatches = local_patches; /* For possible -v */
270 #ifdef HAVE_INTERP_INTERN
274 PerlIO_init(aTHX); /* Hook to IO system */
276 PL_fdpid = newAV(); /* for remembering popen pids by fd */
277 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
278 PL_errors = newSVpvs("");
279 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
280 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
281 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
283 /* First entry is a list of empty elements. It needs to be initialised
284 else all hell breaks loose in S_find_uninit_var(). */
285 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
286 PL_regex_pad = AvARRAY(PL_regex_padav);
287 Newxz(PL_stashpad, PL_stashpadmax, HV *);
289 #ifdef USE_REENTRANT_API
290 Perl_reentrant_init(aTHX);
292 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
293 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
294 * This MUST be done before any hash stores or fetches take place.
295 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
296 * yourself, it is your responsibility to provide a good random seed!
297 * You can also define PERL_HASH_SEED in compile time, see hv.h.
299 * XXX: fix this comment */
300 if (PL_hash_seed_set == FALSE) {
301 Perl_get_hash_seed(aTHX_ PL_hash_seed);
302 PL_hash_seed_set= TRUE;
304 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
306 /* Note that strtab is a rather special HV. Assumptions are made
307 about not iterating on it, and not adding tie magic to it.
308 It is properly deallocated in perl_destruct() */
311 HvSHAREKEYS_off(PL_strtab); /* mandatory */
312 hv_ksplit(PL_strtab, 512);
314 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
316 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
322 # ifdef USE_ENVIRON_ARRAY
323 PL_origenviron = environ;
327 /* Use sysconf(_SC_CLK_TCK) if available, if not
328 * available or if the sysconf() fails, use the HZ.
329 * The HZ if not originally defined has been by now
330 * been defined as CLK_TCK, if available. */
331 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
332 PL_clocktick = sysconf(_SC_CLK_TCK);
333 if (PL_clocktick <= 0)
337 PL_stashcache = newHV();
339 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
340 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
343 if (!PL_mmap_page_size) {
344 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
346 SETERRNO(0, SS_NORMAL);
348 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
350 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
352 if ((long) PL_mmap_page_size < 0) {
354 SV * const error = ERRSV;
355 SvUPGRADE(error, SVt_PV);
356 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
359 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
363 # ifdef HAS_GETPAGESIZE
364 PL_mmap_page_size = getpagesize();
366 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
367 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
371 if (PL_mmap_page_size <= 0)
372 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
373 (IV) PL_mmap_page_size);
375 #endif /* HAS_MMAP */
377 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
378 PL_timesbase.tms_utime = 0;
379 PL_timesbase.tms_stime = 0;
380 PL_timesbase.tms_cutime = 0;
381 PL_timesbase.tms_cstime = 0;
384 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
386 PL_registered_mros = newHV();
387 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
388 HvMAX(PL_registered_mros) = 0;
390 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
391 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
392 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
393 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
394 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
395 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
396 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
397 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
398 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
399 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
400 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
401 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
402 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
403 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
404 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
405 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
406 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
412 =for apidoc nothreadhook
414 Stub that provides thread hook for perl_destruct when there are
421 Perl_nothreadhook(pTHX)
427 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
429 Perl_dump_sv_child(pTHX_ SV *sv)
432 const int sock = PL_dumper_fd;
433 const int debug_fd = PerlIO_fileno(Perl_debug_log);
434 union control_un control;
437 struct cmsghdr *cmptr;
439 unsigned char buffer[256];
441 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
443 if(sock == -1 || debug_fd == -1)
446 PerlIO_flush(Perl_debug_log);
448 /* All these shenanigans are to pass a file descriptor over to our child for
449 it to dump out to. We can't let it hold open the file descriptor when it
450 forks, as the file descriptor it will dump to can turn out to be one end
451 of pipe that some other process will wait on for EOF. (So as it would
452 be open, the wait would be forever.) */
454 msg.msg_control = control.control;
455 msg.msg_controllen = sizeof(control.control);
456 /* We're a connected socket so we don't need a destination */
462 cmptr = CMSG_FIRSTHDR(&msg);
463 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
464 cmptr->cmsg_level = SOL_SOCKET;
465 cmptr->cmsg_type = SCM_RIGHTS;
466 *((int *)CMSG_DATA(cmptr)) = 1;
468 vec[0].iov_base = (void*)&sv;
469 vec[0].iov_len = sizeof(sv);
470 got = sendmsg(sock, &msg, 0);
473 perror("Debug leaking scalars parent sendmsg failed");
476 if(got < sizeof(sv)) {
477 perror("Debug leaking scalars parent short sendmsg");
481 /* Return protocol is
483 unsigned char: length of location string (0 for empty)
484 unsigned char*: string (not terminated)
486 vec[0].iov_base = (void*)&returned_errno;
487 vec[0].iov_len = sizeof(returned_errno);
488 vec[1].iov_base = buffer;
491 got = readv(sock, vec, 2);
494 perror("Debug leaking scalars parent read failed");
495 PerlIO_flush(PerlIO_stderr());
498 if(got < sizeof(returned_errno) + 1) {
499 perror("Debug leaking scalars parent short read");
500 PerlIO_flush(PerlIO_stderr());
505 got = read(sock, buffer + 1, *buffer);
507 perror("Debug leaking scalars parent read 2 failed");
508 PerlIO_flush(PerlIO_stderr());
513 perror("Debug leaking scalars parent short read 2");
514 PerlIO_flush(PerlIO_stderr());
519 if (returned_errno || *buffer) {
520 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
521 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
522 returned_errno, Strerror(returned_errno));
528 =for apidoc perl_destruct
530 Shuts down a Perl interpreter. See L<perlembed>.
539 VOL signed char destruct_level; /* see possible values in intrpvar.h */
541 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
546 PERL_ARGS_ASSERT_PERL_DESTRUCT;
548 PERL_UNUSED_ARG(my_perl);
551 assert(PL_scopestack_ix == 1);
553 /* wait for all pseudo-forked children to finish */
554 PERL_WAIT_FOR_CHILDREN;
556 destruct_level = PL_perl_destruct_level;
557 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
559 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
561 const int i = atoi(s);
563 if (destruct_level < i) destruct_level = i;
565 #ifdef PERL_TRACK_MEMPOOL
566 /* RT #114496, for perl_free */
567 PL_perl_destruct_level = i;
573 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
579 if (PL_endav && !PL_minus_c) {
580 PERL_SET_PHASE(PERL_PHASE_END);
581 call_list(PL_scopestack_ix, PL_endav);
587 assert(PL_scopestack_ix == 0);
589 /* Need to flush since END blocks can produce output */
592 #ifdef PERL_TRACE_OPS
593 /* If we traced all Perl OP usage, report and clean up */
594 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
595 for (i = 0; i <= OP_max; ++i) {
596 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
597 PL_op_exec_cnt[i] = 0;
599 /* Utility slot for easily doing little tracing experiments in the runloop: */
600 if (PL_op_exec_cnt[OP_max+1] != 0)
601 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
602 PerlIO_printf(Perl_debug_log, "\n");
606 if (PL_threadhook(aTHX)) {
607 /* Threads hook has vetoed further cleanup */
608 PL_veto_cleanup = TRUE;
612 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
613 if (destruct_level != 0) {
614 /* Fork here to create a child. Our child's job is to preserve the
615 state of scalars prior to destruction, so that we can instruct it
616 to dump any scalars that we later find have leaked.
617 There's no subtlety in this code - it assumes POSIX, and it doesn't
621 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
622 perror("Debug leaking scalars socketpair failed");
628 perror("Debug leaking scalars fork failed");
632 /* We are the child */
633 const int sock = fd[1];
634 const int debug_fd = PerlIO_fileno(Perl_debug_log);
637 /* Our success message is an integer 0, and a char 0 */
638 static const char success[sizeof(int) + 1] = {0};
642 /* We need to close all other file descriptors otherwise we end up
643 with interesting hangs, where the parent closes its end of a
644 pipe, and sits waiting for (another) child to terminate. Only
645 that child never terminates, because it never gets EOF, because
646 we also have the far end of the pipe open. We even need to
647 close the debugging fd, because sometimes it happens to be one
648 end of a pipe, and a process is waiting on the other end for
649 EOF. Normally it would be closed at some point earlier in
650 destruction, but if we happen to cause the pipe to remain open,
651 EOF never occurs, and we get an infinite hang. Hence all the
652 games to pass in a file descriptor if it's actually needed. */
654 f = sysconf(_SC_OPEN_MAX);
656 where = "sysconf failed";
667 union control_un control;
670 struct cmsghdr *cmptr;
674 msg.msg_control = control.control;
675 msg.msg_controllen = sizeof(control.control);
676 /* We're a connected socket so we don't need a source */
680 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
682 vec[0].iov_base = (void*)⌖
683 vec[0].iov_len = sizeof(target);
685 got = recvmsg(sock, &msg, 0);
690 where = "recv failed";
693 if(got < sizeof(target)) {
694 where = "short recv";
698 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
702 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
703 where = "wrong cmsg_len";
706 if(cmptr->cmsg_level != SOL_SOCKET) {
707 where = "wrong cmsg_level";
710 if(cmptr->cmsg_type != SCM_RIGHTS) {
711 where = "wrong cmsg_type";
715 got_fd = *(int*)CMSG_DATA(cmptr);
716 /* For our last little bit of trickery, put the file descriptor
717 back into Perl_debug_log, as if we never actually closed it
719 if(got_fd != debug_fd) {
720 if (dup2(got_fd, debug_fd) == -1) {
727 PerlIO_flush(Perl_debug_log);
729 got = write(sock, &success, sizeof(success));
732 where = "write failed";
735 if(got < sizeof(success)) {
736 where = "short write";
743 int send_errno = errno;
744 unsigned char length = (unsigned char) strlen(where);
745 struct iovec failure[3] = {
746 {(void*)&send_errno, sizeof(send_errno)},
748 {(void*)where, length}
750 int got = writev(sock, failure, 3);
751 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
752 in the parent if we try to read from the socketpair after the
753 child has exited, even if there was data to read.
754 So sleep a bit to give the parent a fighting chance of
757 _exit((got == -1) ? errno : 0);
761 PL_dumper_fd = fd[0];
766 /* We must account for everything. */
768 /* Destroy the main CV and syntax tree */
769 /* Set PL_curcop now, because destroying ops can cause new SVs
770 to be generated in Perl_pad_swipe, and when running with
771 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
772 op from which the filename structure member is copied. */
773 PL_curcop = &PL_compiling;
775 /* ensure comppad/curpad to refer to main's pad */
776 if (CvPADLIST(PL_main_cv)) {
777 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
778 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
780 op_free(PL_main_root);
783 PL_main_start = NULL;
784 /* note that PL_main_cv isn't usually actually freed at this point,
785 * due to the CvOUTSIDE refs from subs compiled within it. It will
786 * get freed once all the subs are freed in sv_clean_all(), for
787 * destruct_level > 0 */
788 SvREFCNT_dec(PL_main_cv);
790 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
792 /* Tell PerlIO we are about to tear things apart in case
793 we have layers which are using resources that should
797 PerlIO_destruct(aTHX);
800 * Try to destruct global references. We do this first so that the
801 * destructors and destructees still exist. Some sv's might remain.
802 * Non-referenced objects are on their own.
806 /* unhook hooks which will soon be, or use, destroyed data */
807 SvREFCNT_dec(PL_warnhook);
809 SvREFCNT_dec(PL_diehook);
812 /* call exit list functions */
813 while (PL_exitlistlen-- > 0)
814 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
816 Safefree(PL_exitlist);
821 SvREFCNT_dec(PL_registered_mros);
823 /* jettison our possibly duplicated environment */
824 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
825 * so we certainly shouldn't free it here
828 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
829 if (environ != PL_origenviron && !PL_use_safe_putenv
831 /* only main thread can free environ[0] contents */
832 && PL_curinterp == aTHX
838 for (i = 0; environ[i]; i++)
839 safesysfree(environ[i]);
841 /* Must use safesysfree() when working with environ. */
842 safesysfree(environ);
844 environ = PL_origenviron;
847 #endif /* !PERL_MICRO */
849 if (destruct_level == 0) {
851 DEBUG_P(debprofdump());
853 #if defined(PERLIO_LAYERS)
854 /* No more IO - including error messages ! */
855 PerlIO_cleanup(aTHX);
858 CopFILE_free(&PL_compiling);
860 /* The exit() function will do everything that needs doing. */
864 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
867 /* the syntax tree is shared between clones
868 * so op_free(PL_main_root) only ReREFCNT_dec's
869 * REGEXPs in the parent interpreter
870 * we need to manually ReREFCNT_dec for the clones
873 I32 i = AvFILLp(PL_regex_padav);
874 SV **ary = AvARRAY(PL_regex_padav);
877 SvREFCNT_dec(ary[i]);
878 ary[i] = &PL_sv_undef;
884 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
885 PL_stashcache = NULL;
887 /* loosen bonds of global variables */
889 /* XXX can PL_parser still be non-null here? */
890 if(PL_parser && PL_parser->rsfp) {
891 (void)PerlIO_close(PL_parser->rsfp);
892 PL_parser->rsfp = NULL;
896 Safefree(PL_splitstr);
906 PL_doswitches = FALSE;
907 PL_dowarn = G_WARN_OFF;
908 #ifdef PERL_SAWAMPERSAND
909 PL_sawampersand = 0; /* must save all match strings */
913 Safefree(PL_inplace);
915 SvREFCNT_dec(PL_patchlevel);
916 SvREFCNT_dec(PL_apiversion);
919 SvREFCNT_dec(PL_e_script);
925 /* magical thingies */
927 SvREFCNT_dec(PL_ofsgv); /* *, */
930 SvREFCNT_dec(PL_ors_sv); /* $\ */
933 SvREFCNT_dec(PL_rs); /* $/ */
936 Safefree(PL_osname); /* $^O */
939 SvREFCNT_dec(PL_statname);
943 /* defgv, aka *_ should be taken care of elsewhere */
946 Safefree(PL_efloatbuf);
950 /* startup and shutdown function lists */
951 SvREFCNT_dec(PL_beginav);
952 SvREFCNT_dec(PL_beginav_save);
953 SvREFCNT_dec(PL_endav);
954 SvREFCNT_dec(PL_checkav);
955 SvREFCNT_dec(PL_checkav_save);
956 SvREFCNT_dec(PL_unitcheckav);
957 SvREFCNT_dec(PL_unitcheckav_save);
958 SvREFCNT_dec(PL_initav);
960 PL_beginav_save = NULL;
963 PL_checkav_save = NULL;
964 PL_unitcheckav = NULL;
965 PL_unitcheckav_save = NULL;
968 /* shortcuts just get cleared */
974 PL_last_in_gv = NULL;
982 SvREFCNT_dec(PL_envgv);
983 SvREFCNT_dec(PL_incgv);
984 SvREFCNT_dec(PL_argvgv);
985 SvREFCNT_dec(PL_replgv);
986 SvREFCNT_dec(PL_DBgv);
987 SvREFCNT_dec(PL_DBline);
988 SvREFCNT_dec(PL_DBsub);
997 SvREFCNT_dec(PL_argvout_stack);
998 PL_argvout_stack = NULL;
1000 SvREFCNT_dec(PL_modglobal);
1001 PL_modglobal = NULL;
1002 SvREFCNT_dec(PL_preambleav);
1003 PL_preambleav = NULL;
1004 SvREFCNT_dec(PL_subname);
1006 #ifdef PERL_USES_PL_PIDSTATUS
1007 SvREFCNT_dec(PL_pidstatus);
1008 PL_pidstatus = NULL;
1010 SvREFCNT_dec(PL_toptarget);
1011 PL_toptarget = NULL;
1012 SvREFCNT_dec(PL_bodytarget);
1013 PL_bodytarget = NULL;
1014 PL_formtarget = NULL;
1016 /* free locale stuff */
1017 #ifdef USE_LOCALE_COLLATE
1018 Safefree(PL_collation_name);
1019 PL_collation_name = NULL;
1022 #ifdef USE_LOCALE_NUMERIC
1023 Safefree(PL_numeric_name);
1024 PL_numeric_name = NULL;
1025 SvREFCNT_dec(PL_numeric_radix_sv);
1026 PL_numeric_radix_sv = NULL;
1029 /* clear character classes */
1030 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1031 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1032 PL_utf8_swash_ptrs[i] = NULL;
1034 SvREFCNT_dec(PL_utf8_mark);
1035 SvREFCNT_dec(PL_utf8_toupper);
1036 SvREFCNT_dec(PL_utf8_totitle);
1037 SvREFCNT_dec(PL_utf8_tolower);
1038 SvREFCNT_dec(PL_utf8_tofold);
1039 SvREFCNT_dec(PL_utf8_idstart);
1040 SvREFCNT_dec(PL_utf8_idcont);
1041 SvREFCNT_dec(PL_utf8_foldable);
1042 SvREFCNT_dec(PL_utf8_foldclosures);
1043 SvREFCNT_dec(PL_AboveLatin1);
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
1048 PL_utf8_mark = NULL;
1049 PL_utf8_toupper = NULL;
1050 PL_utf8_totitle = NULL;
1051 PL_utf8_tolower = NULL;
1052 PL_utf8_tofold = NULL;
1053 PL_utf8_idstart = NULL;
1054 PL_utf8_idcont = NULL;
1055 PL_utf8_foldclosures = NULL;
1056 PL_AboveLatin1 = NULL;
1057 PL_HasMultiCharFold = NULL;
1059 PL_NonL1NonFinalFold = NULL;
1060 PL_UpperLatin1 = NULL;
1061 for (i = 0; i < POSIX_CC_COUNT; i++) {
1062 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1063 PL_XPosix_ptrs[i] = NULL;
1066 if (!specialWARN(PL_compiling.cop_warnings))
1067 PerlMemShared_free(PL_compiling.cop_warnings);
1068 PL_compiling.cop_warnings = NULL;
1069 cophh_free(CopHINTHASH_get(&PL_compiling));
1070 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1071 CopFILE_free(&PL_compiling);
1073 /* Prepare to destruct main symbol table. */
1076 /* break ref loop *:: <=> %:: */
1077 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1080 SvREFCNT_dec(PL_curstname);
1081 PL_curstname = NULL;
1083 /* clear queued errors */
1084 SvREFCNT_dec(PL_errors);
1087 SvREFCNT_dec(PL_isarev);
1090 if (destruct_level >= 2) {
1091 if (PL_scopestack_ix != 0)
1092 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1094 (long)PL_scopestack_ix);
1095 if (PL_savestack_ix != 0)
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1097 "Unbalanced saves: %ld more saves than restores\n",
1098 (long)PL_savestack_ix);
1099 if (PL_tmps_floor != -1)
1100 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1101 (long)PL_tmps_floor + 1);
1102 if (cxstack_ix != -1)
1103 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1104 (long)cxstack_ix + 1);
1108 SvREFCNT_dec(PL_regex_padav);
1109 PL_regex_padav = NULL;
1110 PL_regex_pad = NULL;
1113 #ifdef PERL_IMPLICIT_CONTEXT
1114 /* the entries in this list are allocated via SV PVX's, so get freed
1115 * in sv_clean_all */
1116 Safefree(PL_my_cxt_list);
1119 /* Now absolutely destruct everything, somehow or other, loops or no. */
1121 /* the 2 is for PL_fdpid and PL_strtab */
1122 while (sv_clean_all() > 2)
1126 Safefree(PL_stashpad); /* must come after sv_clean_all */
1129 AvREAL_off(PL_fdpid); /* no surviving entries */
1130 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1133 #ifdef HAVE_INTERP_INTERN
1137 /* constant strings */
1138 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1139 SvREFCNT_dec(PL_sv_consts[i]);
1140 PL_sv_consts[i] = NULL;
1143 /* Destruct the global string table. */
1145 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1146 * so that sv_free() won't fail on them.
1147 * Now that the global string table is using a single hunk of memory
1148 * for both HE and HEK, we either need to explicitly unshare it the
1149 * correct way, or actually free things here.
1152 const I32 max = HvMAX(PL_strtab);
1153 HE * const * const array = HvARRAY(PL_strtab);
1154 HE *hent = array[0];
1157 if (hent && ckWARN_d(WARN_INTERNAL)) {
1158 HE * const next = HeNEXT(hent);
1159 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1160 "Unbalanced string table refcount: (%ld) for \"%s\"",
1161 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1168 hent = array[riter];
1173 HvARRAY(PL_strtab) = 0;
1174 HvTOTALKEYS(PL_strtab) = 0;
1176 SvREFCNT_dec(PL_strtab);
1179 /* free the pointer tables used for cloning */
1180 ptr_table_free(PL_ptr_table);
1181 PL_ptr_table = (PTR_TBL_t*)NULL;
1184 /* free special SVs */
1186 SvREFCNT(&PL_sv_yes) = 0;
1187 sv_clear(&PL_sv_yes);
1188 SvANY(&PL_sv_yes) = NULL;
1189 SvFLAGS(&PL_sv_yes) = 0;
1191 SvREFCNT(&PL_sv_no) = 0;
1192 sv_clear(&PL_sv_no);
1193 SvANY(&PL_sv_no) = NULL;
1194 SvFLAGS(&PL_sv_no) = 0;
1198 for (i=0; i<=2; i++) {
1199 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1200 sv_clear(PERL_DEBUG_PAD(i));
1201 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1202 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1206 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1207 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1209 #ifdef DEBUG_LEAKING_SCALARS
1210 if (PL_sv_count != 0) {
1215 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1216 svend = &sva[SvREFCNT(sva)];
1217 for (sv = sva + 1; sv < svend; ++sv) {
1218 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1219 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1221 " refcnt=%"UVuf pTHX__FORMAT "\n"
1222 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1224 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1226 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1228 sv->sv_debug_inpad ? "for" : "by",
1229 sv->sv_debug_optype ?
1230 PL_op_name[sv->sv_debug_optype]: "(none)",
1231 PTR2UV(sv->sv_debug_parent),
1234 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1235 Perl_dump_sv_child(aTHX_ sv);
1241 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1245 /* Wait for up to 4 seconds for child to terminate.
1246 This seems to be the least effort way of timing out on reaping
1248 struct timeval waitfor = {4, 0};
1249 int sock = PL_dumper_fd;
1253 FD_SET(sock, &rset);
1254 select(sock + 1, &rset, NULL, NULL, &waitfor);
1255 waitpid(child, &status, WNOHANG);
1260 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1266 #if defined(PERLIO_LAYERS)
1267 /* No more IO - including error messages ! */
1268 PerlIO_cleanup(aTHX);
1271 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1272 as currently layers use it rather than NULL as a marker
1273 for no arg - and will try and SvREFCNT_dec it.
1275 SvREFCNT(&PL_sv_undef) = 0;
1276 SvREADONLY_off(&PL_sv_undef);
1278 Safefree(PL_origfilename);
1279 PL_origfilename = NULL;
1280 Safefree(PL_reg_curpm);
1281 free_tied_hv_pool();
1282 Safefree(PL_op_mask);
1283 Safefree(PL_psig_name);
1284 PL_psig_name = (SV**)NULL;
1285 PL_psig_ptr = (SV**)NULL;
1287 /* We need to NULL PL_psig_pend first, so that
1288 signal handlers know not to use it */
1289 int *psig_save = PL_psig_pend;
1290 PL_psig_pend = (int*)NULL;
1291 Safefree(psig_save);
1294 TAINTING_set(FALSE);
1295 TAINT_WARN_set(FALSE);
1296 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1299 DEBUG_P(debprofdump());
1301 #ifdef USE_REENTRANT_API
1302 Perl_reentrant_free(aTHX);
1307 while (PL_regmatch_slab) {
1308 regmatch_slab *s = PL_regmatch_slab;
1309 PL_regmatch_slab = PL_regmatch_slab->next;
1313 /* As the absolutely last thing, free the non-arena SV for mess() */
1316 /* we know that type == SVt_PVMG */
1318 /* it could have accumulated taint magic */
1321 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1322 moremagic = mg->mg_moremagic;
1323 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1325 Safefree(mg->mg_ptr);
1329 /* we know that type >= SVt_PV */
1330 SvPV_free(PL_mess_sv);
1331 Safefree(SvANY(PL_mess_sv));
1332 Safefree(PL_mess_sv);
1339 =for apidoc perl_free
1341 Releases a Perl interpreter. See L<perlembed>.
1351 PERL_ARGS_ASSERT_PERL_FREE;
1353 if (PL_veto_cleanup)
1356 #ifdef PERL_TRACK_MEMPOOL
1359 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1360 * value as we're probably hunting memory leaks then
1362 if (PL_perl_destruct_level == 0) {
1363 const U32 old_debug = PL_debug;
1364 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1365 thread at thread exit. */
1367 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1368 "free this thread's memory\n");
1369 PL_debug &= ~ DEBUG_m_FLAG;
1371 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1372 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
1373 PL_debug = old_debug;
1378 #if defined(WIN32) || defined(NETWARE)
1379 # if defined(PERL_IMPLICIT_SYS)
1382 void *host = nw_internal_host;
1383 PerlMem_free(aTHXx);
1384 nw_delete_internal_host(host);
1386 void *host = w32_internal_host;
1387 PerlMem_free(aTHXx);
1388 win32_delete_internal_host(host);
1392 PerlMem_free(aTHXx);
1395 PerlMem_free(aTHXx);
1399 #if defined(USE_ITHREADS)
1400 /* provide destructors to clean up the thread key when libperl is unloaded */
1401 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1403 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1404 #pragma fini "perl_fini"
1405 #elif defined(__sun) && !defined(__GNUC__)
1406 #pragma fini (perl_fini)
1410 #if defined(__GNUC__)
1411 __attribute__((destructor))
1417 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1420 PL_curinterp && !PL_veto_cleanup)
1425 #endif /* THREADS */
1428 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1431 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1432 PL_exitlist[PL_exitlistlen].fn = fn;
1433 PL_exitlist[PL_exitlistlen].ptr = ptr;
1438 =for apidoc perl_parse
1440 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1445 #define SET_CURSTASH(newstash) \
1446 if (PL_curstash != newstash) { \
1447 SvREFCNT_dec(PL_curstash); \
1448 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1452 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1459 PERL_ARGS_ASSERT_PERL_PARSE;
1460 #ifndef MULTIPLICITY
1461 PERL_UNUSED_ARG(my_perl);
1463 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1465 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1467 if (s && (atoi(s) == 1)) {
1468 unsigned char *seed= PERL_HASH_SEED;
1469 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1470 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1471 while (seed < seed_end) {
1472 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1474 #ifdef PERL_HASH_RANDOMIZE_KEYS
1475 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1476 PL_HASH_RAND_BITS_ENABLED,
1477 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1479 PerlIO_printf(Perl_debug_log, "\n");
1482 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
1495 * the original argv[0]. (See below for 'contiguous', though.)
1497 const char *s = NULL;
1499 const UV mask = ~(UV)(PTRSIZE-1);
1500 /* Do the mask check only if the args seem like aligned. */
1502 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1504 /* See if all the arguments are contiguous in memory. Note
1505 * that 'contiguous' is a loose term because some platforms
1506 * align the argv[] and the envp[]. If the arguments look
1507 * like non-aligned, assume that they are 'strictly' or
1508 * 'traditionally' contiguous. If the arguments look like
1509 * aligned, we just check that they are within aligned
1510 * PTRSIZE bytes. As long as no system has something bizarre
1511 * like the argv[] interleaved with some other data, we are
1512 * fine. (Did I just evoke Murphy's Law?) --jhi */
1513 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1515 for (i = 1; i < PL_origargc; i++) {
1516 if ((PL_origargv[i] == s + 1
1518 || PL_origargv[i] == s + 2
1523 (PL_origargv[i] > s &&
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1536 #ifndef PERL_USE_SAFE_PUTENV
1537 /* Can we grab env area too to be used as the area for $0? */
1538 if (s && PL_origenviron && !PL_use_safe_putenv) {
1539 if ((PL_origenviron[0] == s + 1)
1542 (PL_origenviron[0] > s &&
1543 PL_origenviron[0] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1547 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1548 s = PL_origenviron[0];
1551 my_setenv("NoNe SuCh", NULL);
1552 /* Force copy of environment. */
1553 for (i = 1; PL_origenviron[i]; i++) {
1554 if (PL_origenviron[i] == s + 1
1557 (PL_origenviron[i] > s &&
1558 PL_origenviron[i] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1562 s = PL_origenviron[i];
1570 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1572 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1577 /* Come here if running an undumped a.out. */
1579 PL_origfilename = savepv(argv[0]);
1580 PL_do_undump = FALSE;
1581 cxstack_ix = -1; /* start label stack again */
1583 assert (!TAINT_get);
1587 init_postdump_symbols(argc,argv,env);
1592 op_free(PL_main_root);
1593 PL_main_root = NULL;
1595 PL_main_start = NULL;
1596 SvREFCNT_dec(PL_main_cv);
1600 oldscope = PL_scopestack_ix;
1601 PL_dowarn = G_WARN_OFF;
1606 parse_body(env,xsinit);
1607 if (PL_unitcheckav) {
1608 call_list(oldscope, PL_unitcheckav);
1611 PERL_SET_PHASE(PERL_PHASE_CHECK);
1612 call_list(oldscope, PL_checkav);
1620 /* my_exit() was called */
1621 while (PL_scopestack_ix > oldscope)
1624 SET_CURSTASH(PL_defstash);
1625 if (PL_unitcheckav) {
1626 call_list(oldscope, PL_unitcheckav);
1629 PERL_SET_PHASE(PERL_PHASE_CHECK);
1630 call_list(oldscope, PL_checkav);
1635 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1643 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1644 miniperl, and we need to see those flags reflected in the values here. */
1646 /* What this returns is subject to change. Use the public interface in Config.
1649 S_Internals_V(pTHX_ CV *cv)
1652 #ifdef LOCAL_PATCH_COUNT
1653 const int local_patch_count = LOCAL_PATCH_COUNT;
1655 const int local_patch_count = 0;
1657 const int entries = 3 + local_patch_count;
1659 static const char non_bincompat_options[] =
1666 # ifdef NO_HASH_SEED
1669 # ifdef NO_TAINT_SUPPORT
1672 # ifdef PERL_BOOL_AS_CHAR
1673 " PERL_BOOL_AS_CHAR"
1675 # ifdef PERL_DISABLE_PMC
1678 # ifdef PERL_DONT_CREATE_GVSV
1679 " PERL_DONT_CREATE_GVSV"
1681 # ifdef PERL_EXTERNAL_GLOB
1682 " PERL_EXTERNAL_GLOB"
1684 # ifdef PERL_HASH_FUNC_SIPHASH
1685 " PERL_HASH_FUNC_SIPHASH"
1687 # ifdef PERL_HASH_FUNC_SDBM
1688 " PERL_HASH_FUNC_SDBM"
1690 # ifdef PERL_HASH_FUNC_DJB2
1691 " PERL_HASH_FUNC_DJB2"
1693 # ifdef PERL_HASH_FUNC_SUPERFAST
1694 " PERL_HASH_FUNC_SUPERFAST"
1696 # ifdef PERL_HASH_FUNC_MURMUR3
1697 " PERL_HASH_FUNC_MURMUR3"
1699 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1702 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1703 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1705 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1706 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1708 # ifdef PERL_IS_MINIPERL
1711 # ifdef PERL_MALLOC_WRAP
1714 # ifdef PERL_MEM_LOG
1717 # ifdef PERL_MEM_LOG_NOIMPL
1718 " PERL_MEM_LOG_NOIMPL"
1720 # ifdef PERL_NEW_COPY_ON_WRITE
1721 " PERL_NEW_COPY_ON_WRITE"
1723 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1724 " PERL_PERTURB_KEYS_DETERMINISTIC"
1726 # ifdef PERL_PERTURB_KEYS_DISABLED
1727 " PERL_PERTURB_KEYS_DISABLED"
1729 # ifdef PERL_PERTURB_KEYS_RANDOM
1730 " PERL_PERTURB_KEYS_RANDOM"
1732 # ifdef PERL_PRESERVE_IVUV
1733 " PERL_PRESERVE_IVUV"
1735 # ifdef PERL_RELOCATABLE_INCPUSH
1736 " PERL_RELOCATABLE_INCPUSH"
1738 # ifdef PERL_USE_DEVEL
1741 # ifdef PERL_USE_SAFE_PUTENV
1742 " PERL_USE_SAFE_PUTENV"
1744 # ifdef UNLINK_ALL_VERSIONS
1745 " UNLINK_ALL_VERSIONS"
1747 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1748 " USE_ATTRIBUTES_FOR_PERLIO"
1750 # ifdef USE_FAST_STDIO
1753 # ifdef USE_HASH_SEED_EXPLICIT
1754 " USE_HASH_SEED_EXPLICIT"
1759 # ifdef USE_LOCALE_CTYPE
1762 # ifdef USE_PERL_ATOF
1765 # ifdef USE_SITECUSTOMIZE
1766 " USE_SITECUSTOMIZE"
1769 PERL_UNUSED_ARG(cv);
1770 PERL_UNUSED_ARG(items);
1772 EXTEND(SP, entries);
1774 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1776 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1780 PUSHs(Perl_newSVpvn_flags(aTHX_
1781 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1784 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1788 PUSHs(&PL_sv_undef);
1791 for (i = 1; i <= local_patch_count; i++) {
1792 /* This will be an undef, if PL_localpatches[i] is NULL. */
1793 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1799 #define INCPUSH_UNSHIFT 0x01
1800 #define INCPUSH_ADD_OLD_VERS 0x02
1801 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1802 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1803 #define INCPUSH_NOT_BASEDIR 0x10
1804 #define INCPUSH_CAN_RELOCATE 0x20
1805 #define INCPUSH_ADD_SUB_DIRS \
1806 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1809 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1813 int argc = PL_origargc;
1814 char **argv = PL_origargv;
1815 const char *scriptname = NULL;
1816 VOL bool dosearch = FALSE;
1818 bool doextract = FALSE;
1819 const char *cddir = NULL;
1820 #ifdef USE_SITECUSTOMIZE
1821 bool minus_f = FALSE;
1823 SV *linestr_sv = NULL;
1824 bool add_read_e_script = FALSE;
1825 U32 lex_start_flags = 0;
1827 PERL_SET_PHASE(PERL_PHASE_START);
1833 for (argc--,argv++; argc > 0; argc--,argv++) {
1834 if (argv[0][0] != '-' || !argv[0][1])
1840 #ifndef PERL_STRICT_CR
1864 if ((s = moreswitches(s)))
1869 #if defined(SILENT_NO_TAINT_SUPPORT)
1870 /* silently ignore */
1871 #elif defined(NO_TAINT_SUPPORT)
1872 Perl_croak_nocontext("This perl was compiled without taint support. "
1873 "Cowardly refusing to run with -t or -T flags");
1875 CHECK_MALLOC_TOO_LATE_FOR('t');
1876 if( !TAINTING_get ) {
1877 TAINT_WARN_set(TRUE);
1884 #if defined(SILENT_NO_TAINT_SUPPORT)
1885 /* silently ignore */
1886 #elif defined(NO_TAINT_SUPPORT)
1887 Perl_croak_nocontext("This perl was compiled without taint support. "
1888 "Cowardly refusing to run with -t or -T flags");
1890 CHECK_MALLOC_TOO_LATE_FOR('T');
1892 TAINT_WARN_set(FALSE);
1901 forbid_setid('e', FALSE);
1903 PL_e_script = newSVpvs("");
1904 add_read_e_script = TRUE;
1907 sv_catpv(PL_e_script, s);
1909 sv_catpv(PL_e_script, argv[1]);
1913 Perl_croak(aTHX_ "No code specified for -%c", c);
1914 sv_catpvs(PL_e_script, "\n");
1918 #ifdef USE_SITECUSTOMIZE
1924 case 'I': /* -I handled both here and in moreswitches() */
1925 forbid_setid('I', FALSE);
1926 if (!*++s && (s=argv[1]) != NULL) {
1930 STRLEN len = strlen(s);
1931 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1934 Perl_croak(aTHX_ "No directory specified for -I");
1937 forbid_setid('S', FALSE);
1946 opts_prog = newSVpvs("use Config; Config::_V()");
1950 opts_prog = Perl_newSVpvf(aTHX_
1951 "use Config; Config::config_vars(qw%c%s%c)",
1955 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1956 /* don't look for script or read stdin */
1957 scriptname = BIT_BUCKET;
1969 if (!*++s || isSPACE(*s)) {
1973 /* catch use of gnu style long options.
1974 Both of these exit immediately. */
1975 if (strEQ(s, "version"))
1977 if (strEQ(s, "help"))
1982 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1993 #ifndef SECURE_INTERNAL_GETENV
1996 (s = PerlEnv_getenv("PERL5OPT")))
2000 if (*s == '-' && *(s+1) == 'T') {
2001 #if defined(SILENT_NO_TAINT_SUPPORT)
2002 /* silently ignore */
2003 #elif defined(NO_TAINT_SUPPORT)
2004 Perl_croak_nocontext("This perl was compiled without taint support. "
2005 "Cowardly refusing to run with -t or -T flags");
2007 CHECK_MALLOC_TOO_LATE_FOR('T');
2009 TAINT_WARN_set(FALSE);
2013 char *popt_copy = NULL;
2026 if (!strchr("CDIMUdmtwW", *s))
2027 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2031 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2032 s = popt_copy + (s - d);
2040 #if defined(SILENT_NO_TAINT_SUPPORT)
2041 /* silently ignore */
2042 #elif defined(NO_TAINT_SUPPORT)
2043 Perl_croak_nocontext("This perl was compiled without taint support. "
2044 "Cowardly refusing to run with -t or -T flags");
2046 if( !TAINTING_get) {
2047 TAINT_WARN_set(TRUE);
2059 /* Set $^X early so that it can be used for relocatable paths in @INC */
2060 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2061 assert (!TAINT_get);
2066 #if defined(USE_SITECUSTOMIZE)
2068 /* The games with local $! are to avoid setting errno if there is no
2069 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2070 ie a q() operator with a NUL byte as a the delimiter. This avoids
2071 problems with pathnames containing (say) ' */
2072 # ifdef PERL_IS_MINIPERL
2073 AV *const inc = GvAV(PL_incgv);
2074 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2077 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2078 it should be reported immediately as a build failure. */
2079 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2081 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2086 /* SITELIB_EXP is a function call on Win32. */
2087 const char *const raw_sitelib = SITELIB_EXP;
2089 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2090 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2091 INCPUSH_CAN_RELOCATE);
2092 const char *const sitelib = SvPVX(sitelib_sv);
2093 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2095 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2098 assert (SvREFCNT(sitelib_sv) == 1);
2099 SvREFCNT_dec(sitelib_sv);
2106 scriptname = argv[0];
2109 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2111 else if (scriptname == NULL) {
2113 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2119 assert (!TAINT_get);
2123 bool suidscript = FALSE;
2125 rsfp = open_script(scriptname, dosearch, &suidscript);
2127 rsfp = PerlIO_stdin();
2128 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2131 validate_suid(rsfp);
2134 # if defined(SIGCHLD) || defined(SIGCLD)
2137 # define SIGCHLD SIGCLD
2139 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2140 if (sigstate == (Sighandler_t) SIG_IGN) {
2141 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2142 "Can't ignore signal CHLD, forcing to default");
2143 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2151 /* This will croak if suidscript is true, as -x cannot be used with
2153 forbid_setid('x', suidscript);
2154 /* Hence you can't get here if suidscript is true */
2156 linestr_sv = newSV_type(SVt_PV);
2157 lex_start_flags |= LEX_START_COPIED;
2158 find_beginning(linestr_sv, rsfp);
2159 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2160 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2164 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2165 CvUNIQUE_on(PL_compcv);
2167 CvPADLIST(PL_compcv) = pad_new(0);
2169 PL_isarev = newHV();
2172 boot_core_UNIVERSAL();
2174 newXS("Internals::V", S_Internals_V, __FILE__);
2177 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2179 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2185 # ifdef HAS_SOCKS5_INIT
2186 socks5_init(argv[0]);
2192 init_predump_symbols();
2193 /* init_postdump_symbols not currently designed to be called */
2194 /* more than once (ENV isn't cleared first, for example) */
2195 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2197 init_postdump_symbols(argc,argv,env);
2199 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2200 * or explicitly in some platforms.
2201 * locale.c:Perl_init_i18nl10n() if the environment
2202 * look like the user wants to use UTF-8. */
2203 #if defined(__SYMBIAN32__)
2204 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2206 # ifndef PERL_IS_MINIPERL
2208 /* Requires init_predump_symbols(). */
2209 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2214 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2215 * and the default open disciplines. */
2216 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2217 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2219 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2220 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2221 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2223 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2224 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2225 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2227 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2228 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2229 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2231 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2232 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2235 sv_setpvs(sv, ":utf8\0:utf8");
2237 sv_setpvs(sv, ":utf8\0");
2240 sv_setpvs(sv, "\0:utf8");
2249 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2250 if (strEQ(s, "unsafe"))
2251 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2252 else if (strEQ(s, "safe"))
2253 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2255 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2262 if (!TAINTING_get &&
2263 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2267 PL_xmlfp = PerlIO_stdout();
2269 PL_xmlfp = PerlIO_open(s, "w");
2271 Perl_croak(aTHX_ "Can't open %s", s);
2273 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2279 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2280 PL_madskills = atoi(s);
2281 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2286 lex_start(linestr_sv, rsfp, lex_start_flags);
2287 SvREFCNT_dec(linestr_sv);
2289 PL_subname = newSVpvs("main");
2291 if (add_read_e_script)
2292 filter_add(read_e_script, NULL);
2294 /* now parse the script */
2296 SETERRNO(0,SS_NORMAL);
2297 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2299 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2301 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2305 CopLINE_set(PL_curcop, 0);
2306 SET_CURSTASH(PL_defstash);
2308 SvREFCNT_dec(PL_e_script);
2316 SAVECOPFILE(PL_curcop);
2317 SAVECOPLINE(PL_curcop);
2318 gv_check(PL_defstash);
2327 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2328 dump_mstats("after compilation:");
2333 PL_restartjmpenv = NULL;
2339 =for apidoc perl_run
2341 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)
2408 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2409 PL_sawampersand ? "Enabling" : "Omitting",
2410 (unsigned int)(PL_sawampersand)));
2412 if (!PL_restartop) {
2416 exit(0); /* less likely to core dump than my_exit(0) */
2420 if (DEBUG_x_TEST || DEBUG_B_TEST)
2421 dump_all_perl(!DEBUG_B_TEST);
2423 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2427 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2430 if (PERLDB_SINGLE && PL_DBsingle)
2431 sv_setiv(PL_DBsingle, 1);
2433 PERL_SET_PHASE(PERL_PHASE_INIT);
2434 call_list(oldscope, PL_initav);
2436 #ifdef PERL_DEBUG_READONLY_OPS
2437 if (PL_main_root && PL_main_root->op_slabbed)
2438 Slab_to_ro(OpSLAB(PL_main_root));
2444 PERL_SET_PHASE(PERL_PHASE_RUN);
2447 PL_restartjmpenv = NULL;
2448 PL_op = PL_restartop;
2452 else if (PL_main_start) {
2453 CvDEPTH(PL_main_cv) = 1;
2454 PL_op = PL_main_start;
2458 assert(0); /* NOTREACHED */
2462 =head1 SV Manipulation Functions
2464 =for apidoc p||get_sv
2466 Returns the SV of the specified Perl scalar. C<flags> are passed to
2467 C<gv_fetchpv>. If C<GV_ADD> is set and the
2468 Perl variable does not exist then it will be created. If C<flags> is zero
2469 and the variable does not exist then NULL is returned.
2475 Perl_get_sv(pTHX_ const char *name, I32 flags)
2479 PERL_ARGS_ASSERT_GET_SV;
2481 gv = gv_fetchpv(name, flags, SVt_PV);
2488 =head1 Array Manipulation Functions
2490 =for apidoc p||get_av
2492 Returns the AV of the specified Perl global or package array with the given
2493 name (so it won't work on lexical variables). C<flags> are passed
2494 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2495 Perl variable does not exist then it will be created. If C<flags> is zero
2496 and the variable does not exist then NULL is returned.
2498 Perl equivalent: C<@{"$name"}>.
2504 Perl_get_av(pTHX_ const char *name, I32 flags)
2506 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2508 PERL_ARGS_ASSERT_GET_AV;
2518 =head1 Hash Manipulation Functions
2520 =for apidoc p||get_hv
2522 Returns the HV of the specified Perl hash. C<flags> are passed to
2523 C<gv_fetchpv>. If C<GV_ADD> is set and the
2524 Perl variable does not exist then it will be created. If C<flags> is zero
2525 and the variable does not exist then NULL is returned.
2531 Perl_get_hv(pTHX_ const char *name, I32 flags)
2533 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2535 PERL_ARGS_ASSERT_GET_HV;
2545 =head1 CV Manipulation Functions
2547 =for apidoc p||get_cvn_flags
2549 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2550 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2551 exist then it will be declared (which has the same effect as saying
2552 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2553 then NULL is returned.
2555 =for apidoc p||get_cv
2557 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2563 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2565 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2567 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2569 /* XXX this is probably not what they think they're getting.
2570 * It has the same effect as "sub name;", i.e. just a forward
2572 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2573 return newSTUB(gv,0);
2580 /* Nothing in core calls this now, but we can't replace it with a macro and
2581 move it to mathoms.c as a macro would evaluate name twice. */
2583 Perl_get_cv(pTHX_ const char *name, I32 flags)
2585 PERL_ARGS_ASSERT_GET_CV;
2587 return get_cvn_flags(name, strlen(name), flags);
2590 /* Be sure to refetch the stack pointer after calling these routines. */
2594 =head1 Callback Functions
2596 =for apidoc p||call_argv
2598 Performs a callback to the specified named and package-scoped Perl subroutine
2599 with C<argv> (a NULL-terminated array of strings) as arguments. See
2602 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2608 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2610 /* See G_* flags in cop.h */
2611 /* null terminated arg list */
2616 PERL_ARGS_ASSERT_CALL_ARGV;
2621 mXPUSHs(newSVpv(*argv,0));
2626 return call_pv(sub_name, flags);
2630 =for apidoc p||call_pv
2632 Performs a callback to the specified Perl sub. See L<perlcall>.
2638 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2639 /* name of the subroutine */
2640 /* See G_* flags in cop.h */
2642 PERL_ARGS_ASSERT_CALL_PV;
2644 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2648 =for apidoc p||call_method
2650 Performs a callback to the specified Perl method. The blessed object must
2651 be on the stack. See L<perlcall>.
2657 Perl_call_method(pTHX_ const char *methname, I32 flags)
2658 /* name of the subroutine */
2659 /* See G_* flags in cop.h */
2663 PERL_ARGS_ASSERT_CALL_METHOD;
2665 len = strlen(methname);
2666 sv = flags & G_METHOD_NAMED
2667 ? sv_2mortal(newSVpvn_share(methname, len,0))
2668 : newSVpvn_flags(methname, len, SVs_TEMP);
2670 return call_sv(sv, flags | G_METHOD);
2673 /* May be called with any of a CV, a GV, or an SV containing the name. */
2675 =for apidoc p||call_sv
2677 Performs a callback to the Perl sub whose name is in the SV. See
2684 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2685 /* See G_* flags in cop.h */
2688 LOGOP myop; /* fake syntax tree node */
2694 bool oldcatch = CATCH_GET;
2696 OP* const oldop = PL_op;
2699 PERL_ARGS_ASSERT_CALL_SV;
2701 if (flags & G_DISCARD) {
2705 if (!(flags & G_WANT)) {
2706 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2711 Zero(&myop, 1, LOGOP);
2712 if (!(flags & G_NOARGS))
2713 myop.op_flags |= OPf_STACKED;
2714 myop.op_flags |= OP_GIMME_REVERSE(flags);
2718 EXTEND(PL_stack_sp, 1);
2719 if (!(flags & G_METHOD_NAMED))
2720 *++PL_stack_sp = sv;
2722 oldscope = PL_scopestack_ix;
2724 if (PERLDB_SUB && PL_curstash != PL_debstash
2725 /* Handle first BEGIN of -d. */
2726 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2727 /* Try harder, since this may have been a sighandler, thus
2728 * curstash may be meaningless. */
2729 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2730 && !(flags & G_NODEBUG))
2731 myop.op_private |= OPpENTERSUB_DB;
2733 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2734 if ( flags & G_METHOD_NAMED ) {
2735 Zero(&method_svop, 1, SVOP);
2736 method_svop.op_next = (OP*)&myop;
2737 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2738 method_svop.op_type = OP_METHOD_NAMED;
2739 method_svop.op_sv = sv;
2740 PL_op = (OP*)&method_svop;
2742 Zero(&method_unop, 1, UNOP);
2743 method_unop.op_next = (OP*)&myop;
2744 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2745 method_unop.op_type = OP_METHOD;
2746 PL_op = (OP*)&method_unop;
2748 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2749 myop.op_type = OP_ENTERSUB;
2753 if (!(flags & G_EVAL)) {
2755 CALL_BODY_SUB((OP*)&myop);
2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
2757 CATCH_SET(oldcatch);
2760 myop.op_other = (OP*)&myop;
2762 create_eval_scope(flags|G_FAKINGEVAL);
2770 CALL_BODY_SUB((OP*)&myop);
2771 retval = PL_stack_sp - (PL_stack_base + oldmark);
2772 if (!(flags & G_KEEPERR)) {
2780 /* my_exit() was called */
2781 SET_CURSTASH(PL_defstash);
2785 assert(0); /* NOTREACHED */
2788 PL_restartjmpenv = NULL;
2789 PL_op = PL_restartop;
2793 PL_stack_sp = PL_stack_base + oldmark;
2794 if ((flags & G_WANT) == G_ARRAY)
2798 *++PL_stack_sp = &PL_sv_undef;
2803 if (PL_scopestack_ix > oldscope)
2804 delete_eval_scope();
2808 if (flags & G_DISCARD) {
2809 PL_stack_sp = PL_stack_base + oldmark;
2818 /* Eval a string. The G_EVAL flag is always assumed. */
2821 =for apidoc p||eval_sv
2823 Tells Perl to C<eval> the string in the SV. It supports the same flags
2824 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2830 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2832 /* See G_* flags in cop.h */
2836 UNOP myop; /* fake syntax tree node */
2837 VOL I32 oldmark = SP - PL_stack_base;
2840 OP* const oldop = PL_op;
2843 PERL_ARGS_ASSERT_EVAL_SV;
2845 if (flags & G_DISCARD) {
2852 Zero(&myop, 1, UNOP);
2853 EXTEND(PL_stack_sp, 1);
2854 *++PL_stack_sp = sv;
2856 if (!(flags & G_NOARGS))
2857 myop.op_flags = OPf_STACKED;
2858 myop.op_type = OP_ENTEREVAL;
2859 myop.op_flags |= OP_GIMME_REVERSE(flags);
2860 if (flags & G_KEEPERR)
2861 myop.op_flags |= OPf_SPECIAL;
2863 if (flags & G_RE_REPARSING)
2864 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2866 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2867 * before a PUSHEVAL, which corrupts the stack after a croak */
2868 TAINT_PROPER("eval_sv()");
2874 if (PL_op == (OP*)(&myop)) {
2875 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2877 goto fail; /* failed in compilation */
2880 retval = PL_stack_sp - (PL_stack_base + oldmark);
2881 if (!(flags & G_KEEPERR)) {
2889 /* my_exit() was called */
2890 SET_CURSTASH(PL_defstash);
2894 assert(0); /* NOTREACHED */
2897 PL_restartjmpenv = NULL;
2898 PL_op = PL_restartop;
2903 PL_stack_sp = PL_stack_base + oldmark;
2904 if ((flags & G_WANT) == G_ARRAY)
2908 *++PL_stack_sp = &PL_sv_undef;
2914 if (flags & G_DISCARD) {
2915 PL_stack_sp = PL_stack_base + oldmark;
2925 =for apidoc p||eval_pv
2927 Tells Perl to C<eval> the given string and return an SV* result.
2933 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2936 SV* sv = newSVpv(p, 0);
2938 PERL_ARGS_ASSERT_EVAL_PV;
2940 eval_sv(sv, G_SCALAR);
2949 /* just check empty string or undef? */
2950 if (croak_on_error) {
2951 SV * const errsv = ERRSV;
2952 if(SvTRUE_NN(errsv))
2953 /* replace with croak_sv? */
2954 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2960 /* Require a module. */
2963 =head1 Embedding Functions
2965 =for apidoc p||require_pv
2967 Tells Perl to C<require> the file named by the string argument. It is
2968 analogous to the Perl code C<eval "require '$file'">. It's even
2969 implemented that way; consider using load_module instead.
2974 Perl_require_pv(pTHX_ const char *pv)
2980 PERL_ARGS_ASSERT_REQUIRE_PV;
2982 PUSHSTACKi(PERLSI_REQUIRE);
2983 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2984 eval_sv(sv_2mortal(sv), G_DISCARD);
2989 S_usage(pTHX) /* XXX move this out into a module ? */
2991 /* This message really ought to be max 23 lines.
2992 * Removed -h because the user already knows that option. Others? */
2994 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2995 minimum of 509 character string literals. */
2996 static const char * const usage_msg[] = {
2997 " -0[octal] specify record separator (\\0, if no argument)\n"
2998 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2999 " -C[number/list] enables the listed Unicode features\n"
3000 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3001 " -d[:debugger] run program under debugger\n"
3002 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3003 " -e program one line of program (several -e's allowed, omit programfile)\n"
3004 " -E program like -e, but enables all optional features\n"
3005 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3006 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3007 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3008 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3009 " -l[octal] enable line ending processing, specifies line terminator\n"
3010 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3011 " -n assume \"while (<>) { ... }\" loop around program\n"
3012 " -p assume loop like -n but print line also, like sed\n"
3013 " -s enable rudimentary parsing for switches after programfile\n"
3014 " -S look for programfile using PATH environment variable\n",
3015 " -t enable tainting warnings\n"
3016 " -T enable tainting checks\n"
3017 " -u dump core after parsing program\n"
3018 " -U allow unsafe operations\n"
3019 " -v print version, patchlevel and license\n"
3020 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3021 " -w enable many useful warnings\n"
3022 " -W enable all warnings\n"
3023 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3024 " -X disable all warnings\n"
3026 "Run 'perldoc perl' for more help with Perl.\n\n",
3029 const char * const *p = usage_msg;
3030 PerlIO *out = PerlIO_stdout();
3033 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3036 PerlIO_puts(out, *p++);
3040 /* convert a string of -D options (or digits) into an int.
3041 * sets *s to point to the char after the options */
3045 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3047 static const char * const usage_msgd[] = {
3048 " Debugging flag values: (see also -d)\n"
3049 " p Tokenizing and parsing (with v, displays parse stack)\n"
3050 " s Stack snapshots (with v, displays all stacks)\n"
3051 " l Context (loop) stack processing\n"
3052 " t Trace execution\n"
3053 " o Method and overloading resolution\n",
3054 " c String/numeric conversions\n"
3055 " P Print profiling info, source file input state\n"
3056 " m Memory and SV allocation\n"
3057 " f Format processing\n"
3058 " r Regular expression parsing and execution\n"
3059 " x Syntax tree dump\n",
3060 " u Tainting checks\n"
3061 " H Hash dump -- usurps values()\n"
3062 " X Scratchpad allocation\n"
3064 " S Op slab allocation\n"
3066 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3067 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3068 " v Verbose: use in conjunction with other flags\n"
3069 " C Copy On Write\n"
3070 " A Consistency checks on internal structures\n"
3071 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3072 " M trace smart match resolution\n"
3073 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3074 " L trace some locale setting information--for Perl core development\n",
3079 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3082 /* if adding extra options, remember to update DEBUG_MASK */
3083 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3085 for (; isWORDCHAR(**s); (*s)++) {
3086 const char * const d = strchr(debopts,**s);
3088 i |= 1 << (d - debopts);
3089 else if (ckWARN_d(WARN_DEBUGGING))
3090 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3091 "invalid option -D%c, use -D'' to see choices\n", **s);
3094 else if (isDIGIT(**s)) {
3096 for (; isWORDCHAR(**s); (*s)++) ;
3098 else if (givehelp) {
3099 const char *const *p = usage_msgd;
3100 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3103 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3104 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3105 "-Dp not implemented on this platform\n");
3111 /* This routine handles any switches that can be given during run */
3114 Perl_moreswitches(pTHX_ const char *s)
3118 const char option = *s; /* used to remember option in -m/-M code */
3120 PERL_ARGS_ASSERT_MORESWITCHES;
3128 SvREFCNT_dec(PL_rs);
3129 if (s[1] == 'x' && s[2]) {
3130 const char *e = s+=2;
3136 flags = PERL_SCAN_SILENT_ILLDIGIT;
3137 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3138 if (s + numlen < e) {
3139 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3143 PL_rs = newSVpvs("");
3144 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3145 tmps = (U8*)SvPVX(PL_rs);
3146 uvchr_to_utf8(tmps, rschar);
3147 SvCUR_set(PL_rs, UNISKIP(rschar));
3152 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3153 if (rschar & ~((U8)~0))
3154 PL_rs = &PL_sv_undef;
3155 else if (!rschar && numlen >= 2)
3156 PL_rs = newSVpvs("");
3158 char ch = (char)rschar;
3159 PL_rs = newSVpvn(&ch, 1);
3162 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3167 PL_unicode = parse_unicode_opts( (const char **)&s );
3168 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3176 while (*s && !isSPACE(*s)) ++s;
3177 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3189 forbid_setid('d', FALSE);
3192 /* -dt indicates to the debugger that threads will be used */
3193 if (*s == 't' && !isWORDCHAR(s[1])) {
3195 my_setenv("PERL5DB_THREADED", "1");
3198 /* The following permits -d:Mod to accepts arguments following an =
3199 in the fashion that -MSome::Mod does. */
3200 if (*s == ':' || *s == '=') {
3207 sv = newSVpvs("no Devel::");
3209 sv = newSVpvs("use Devel::");
3213 end = s + strlen(s);
3215 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3216 while(isWORDCHAR(*s) || *s==':') ++s;
3218 sv_catpvn(sv, start, end - start);
3220 sv_catpvn(sv, start, s-start);
3221 /* Don't use NUL as q// delimiter here, this string goes in the
3223 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3226 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3230 PL_perldb = PERLDB_ALL;
3237 forbid_setid('D', FALSE);
3239 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3240 #else /* !DEBUGGING */
3241 if (ckWARN_d(WARN_DEBUGGING))
3242 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3243 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3244 for (s++; isWORDCHAR(*s); s++) ;
3251 Safefree(PL_inplace);
3252 #if defined(__CYGWIN__) /* do backup extension automagically */
3253 if (*(s+1) == '\0') {
3254 PL_inplace = savepvs(".bak");
3257 #endif /* __CYGWIN__ */
3259 const char * const start = ++s;
3260 while (*s && !isSPACE(*s))
3263 PL_inplace = savepvn(start, s - start);
3267 if (*s == '-') /* Additional switches on #! line. */
3271 case 'I': /* -I handled both here and in parse_body() */
3272 forbid_setid('I', FALSE);
3274 while (*s && isSPACE(*s))
3279 /* ignore trailing spaces (possibly followed by other switches) */
3281 for (e = p; *e && !isSPACE(*e); e++) ;
3285 } while (*p && *p != '-');
3287 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3293 Perl_croak(aTHX_ "No directory specified for -I");
3299 SvREFCNT_dec(PL_ors_sv);
3305 PL_ors_sv = newSVpvs("\n");
3306 numlen = 3 + (*s == '0');
3307 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3311 if (RsPARA(PL_rs)) {
3312 PL_ors_sv = newSVpvs("\n\n");
3315 PL_ors_sv = newSVsv(PL_rs);
3320 forbid_setid('M', FALSE); /* XXX ? */
3323 forbid_setid('m', FALSE); /* XXX ? */
3328 const char *use = "use ";
3330 /* -M-foo == 'no foo' */
3331 /* Leading space on " no " is deliberate, to make both
3332 possibilities the same length. */
3333 if (*s == '-') { use = " no "; ++s; }
3334 sv = newSVpvn(use,4);
3336 /* We allow -M'Module qw(Foo Bar)' */
3337 while(isWORDCHAR(*s) || *s==':') {
3346 Perl_croak(aTHX_ "Module name required with -%c option",
3349 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3350 "contains single ':'",
3351 (int)(s - start), start, option);
3352 end = s + strlen(s);
3354 sv_catpvn(sv, start, end - start);
3355 if (option == 'm') {
3357 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3358 sv_catpvs( sv, " ()");
3361 sv_catpvn(sv, start, s-start);
3362 /* Use NUL as q''-delimiter. */
3363 sv_catpvs(sv, " split(/,/,q\0");
3365 sv_catpvn(sv, s, end - s);
3366 sv_catpvs(sv, "\0)");
3369 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3372 Perl_croak(aTHX_ "Missing argument to -%c", option);
3383 forbid_setid('s', FALSE);
3384 PL_doswitches = TRUE;
3389 #if defined(SILENT_NO_TAINT_SUPPORT)
3390 /* silently ignore */
3391 #elif defined(NO_TAINT_SUPPORT)
3392 Perl_croak_nocontext("This perl was compiled without taint support. "
3393 "Cowardly refusing to run with -t or -T flags");
3401 PL_do_undump = TRUE;
3411 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3412 PL_dowarn |= G_WARN_ON;
3417 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3418 if (!specialWARN(PL_compiling.cop_warnings))
3419 PerlMemShared_free(PL_compiling.cop_warnings);
3420 PL_compiling.cop_warnings = pWARN_ALL ;
3424 PL_dowarn = G_WARN_ALL_OFF;
3425 if (!specialWARN(PL_compiling.cop_warnings))
3426 PerlMemShared_free(PL_compiling.cop_warnings);
3427 PL_compiling.cop_warnings = pWARN_NONE ;
3434 if (s[0] == '-') /* Additional switches on #! line. */
3439 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3445 #ifdef ALTERNATE_SHEBANG
3446 case 'S': /* OS/2 needs -S on "extproc" line. */
3449 case 'e': case 'f': case 'x': case 'E':
3450 #ifndef ALTERNATE_SHEBANG
3454 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3457 "Unrecognized switch: -%.1s (-h will show valid options)",s
3467 PerlIO * PIO_stdout;
3469 const char * const level_str = "v" PERL_VERSION_STRING;
3470 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3471 #ifdef PERL_PATCHNUM
3473 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3474 static const char num [] = PERL_PATCHNUM "*";
3476 static const char num [] = PERL_PATCHNUM;
3479 const STRLEN num_len = sizeof(num)-1;
3480 /* A very advanced compiler would fold away the strnEQ
3481 and this whole conditional, but most (all?) won't do it.
3482 SV level could also be replaced by with preprocessor
3485 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3486 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3487 of the interp so it might contain format characters
3489 level = newSVpvn(num, num_len);
3491 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3495 SV* level = newSVpvn(level_str, level_len);
3496 #endif /* #ifdef PERL_PATCHNUM */
3497 PIO_stdout = PerlIO_stdout();
3498 PerlIO_printf(PIO_stdout,
3499 "\nThis is perl " STRINGIFY(PERL_REVISION)
3500 ", version " STRINGIFY(PERL_VERSION)
3501 ", subversion " STRINGIFY(PERL_SUBVERSION)
3502 " (%"SVf") built for " ARCHNAME, level
3504 SvREFCNT_dec_NN(level);
3506 #if defined(LOCAL_PATCH_COUNT)
3507 if (LOCAL_PATCH_COUNT > 0)
3508 PerlIO_printf(PIO_stdout,
3509 "\n(with %d registered patch%s, "
3510 "see perl -V for more detail)",
3512 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3515 PerlIO_printf(PIO_stdout,
3516 "\n\nCopyright 1987-2014, Larry Wall\n");
3518 PerlIO_printf(PIO_stdout,
3519 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3522 PerlIO_printf(PIO_stdout,
3523 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3524 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3527 PerlIO_printf(PIO_stdout,
3528 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3529 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3532 PerlIO_printf(PIO_stdout,
3533 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3536 PerlIO_printf(PIO_stdout,
3537 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3540 PerlIO_printf(PIO_stdout,
3541 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3544 PerlIO_printf(PIO_stdout,
3545 "WINCE port by Rainer Keuchel, 2001-2002\n"
3546 "Built on " __DATE__ " " __TIME__ "\n\n");
3549 #ifdef __SYMBIAN32__
3550 PerlIO_printf(PIO_stdout,
3551 "Symbian port by Nokia, 2004-2005\n");
3553 #ifdef BINARY_BUILD_NOTICE
3554 BINARY_BUILD_NOTICE;
3556 PerlIO_printf(PIO_stdout,
3558 Perl may be copied only under the terms of either the Artistic License or the\n\
3559 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3560 Complete documentation for Perl, including FAQ lists, should be found on\n\
3561 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3562 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3566 /* compliments of Tom Christiansen */
3568 /* unexec() can be found in the Gnu emacs distribution */
3569 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3572 #include <lib$routines.h>
3576 Perl_my_unexec(pTHX)
3578 PERL_UNUSED_CONTEXT;
3580 SV * prog = newSVpv(BIN_EXP, 0);
3581 SV * file = newSVpv(PL_origfilename, 0);
3585 sv_catpvs(prog, "/perl");
3586 sv_catpvs(file, ".perldump");
3588 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3589 /* unexec prints msg to stderr in case of failure */
3590 PerlProc_exit(status);
3593 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3594 # elif defined(WIN32) || defined(__CYGWIN__)
3595 Perl_croak(aTHX_ "dump is not supported");
3597 ABORT(); /* for use with undump */
3602 /* initialize curinterp */
3608 # define PERLVAR(prefix,var,type)
3609 # define PERLVARA(prefix,var,n,type)
3610 # if defined(PERL_IMPLICIT_CONTEXT)
3611 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3612 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3614 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3615 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3617 # include "intrpvar.h"
3623 # define PERLVAR(prefix,var,type)
3624 # define PERLVARA(prefix,var,n,type)
3625 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3626 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3627 # include "intrpvar.h"
3637 S_init_main_stash(pTHX)
3642 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3643 /* We know that the string "main" will be in the global shared string
3644 table, so it's a small saving to use it rather than allocate another
3646 PL_curstname = newSVpvs_share("main");
3647 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3648 /* If we hadn't caused another reference to "main" to be in the shared
3649 string table above, then it would be worth reordering these two,
3650 because otherwise all we do is delete "main" from it as a consequence
3651 of the SvREFCNT_dec, only to add it again with hv_name_set */
3652 SvREFCNT_dec(GvHV(gv));
3653 hv_name_set(PL_defstash, "main", 4, 0);
3654 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3656 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3658 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3659 GvMULTI_on(PL_incgv);
3660 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3661 SvREFCNT_inc_simple_void(PL_hintgv);
3662 GvMULTI_on(PL_hintgv);
3663 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3664 SvREFCNT_inc_simple_void(PL_defgv);
3665 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3666 SvREFCNT_inc_simple_void(PL_errgv);
3667 GvMULTI_on(PL_errgv);
3668 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3669 SvREFCNT_inc_simple_void(PL_replgv);
3670 GvMULTI_on(PL_replgv);
3671 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3672 #ifdef PERL_DONT_CREATE_GVSV
3675 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3677 SET_CURSTASH(PL_defstash);
3678 CopSTASH_set(&PL_compiling, PL_defstash);
3679 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3680 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3682 /* We must init $/ before switches are processed. */
3683 sv_setpvs(get_sv("/", GV_ADD), "\n");
3687 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3690 PerlIO *rsfp = NULL;
3695 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3698 PL_origfilename = savepvs("-e");
3701 /* if find_script() returns, it returns a malloc()-ed value */
3702 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3704 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3705 const char *s = scriptname + 8;
3711 * Tell apart "normal" usage of fdscript, e.g.
3712 * with bash on FreeBSD:
3713 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3714 * from usage in suidperl.
3715 * Does any "normal" usage leave garbage after the number???
3716 * Is it a mistake to use a similar /dev/fd/ construct for
3721 * Be supersafe and do some sanity-checks.
3722 * Still, can we be sure we got the right thing?
3725 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3728 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3730 scriptname = savepv(s + 1);
3731 Safefree(PL_origfilename);
3732 PL_origfilename = (char *)scriptname;
3737 CopFILE_free(PL_curcop);
3738 CopFILE_set(PL_curcop, PL_origfilename);
3739 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3740 scriptname = (char *)"";
3741 if (fdscript >= 0) {
3742 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3744 else if (!*scriptname) {
3745 forbid_setid(0, *suidscript);
3749 #ifdef FAKE_BIT_BUCKET
3750 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3751 * is called) and still have the "-e" work. (Believe it or not,
3752 * a /dev/null is required for the "-e" to work because source
3753 * filter magic is used to implement it. ) This is *not* a general
3754 * replacement for a /dev/null. What we do here is create a temp
3755 * file (an empty file), open up that as the script, and then
3756 * immediately close and unlink it. Close enough for jazz. */
3757 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3758 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3759 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3760 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3761 FAKE_BIT_BUCKET_TEMPLATE
3763 const char * const err = "Failed to create a fake bit bucket";
3764 if (strEQ(scriptname, BIT_BUCKET)) {
3765 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3766 int old_umask = umask(0600);
3767 int tmpfd = mkstemp(tmpname);
3770 scriptname = tmpname;
3773 Perl_croak(aTHX_ err);
3776 scriptname = mktemp(tmpname);
3778 Perl_croak(aTHX_ err);
3783 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3784 #ifdef FAKE_BIT_BUCKET
3785 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3786 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3787 && strlen(scriptname) == sizeof(tmpname) - 1) {
3790 scriptname = BIT_BUCKET;
3794 /* PSz 16 Sep 03 Keep neat error message */
3796 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3798 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3799 CopFILE(PL_curcop), Strerror(errno));
3801 fd = PerlIO_fileno(rsfp);
3802 #if defined(HAS_FCNTL) && defined(F_SETFD)
3804 /* ensure close-on-exec */
3805 if (fcntl(fd, F_SETFD, 1) < 0) {
3806 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3807 CopFILE(PL_curcop), Strerror(errno));
3813 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3814 && S_ISDIR(tmpstatbuf.st_mode)))
3815 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3823 * I_SYSSTATVFS HAS_FSTATVFS
3825 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3826 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3827 * here so that metaconfig picks them up. */
3830 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3831 /* Don't even need this function. */
3834 S_validate_suid(pTHX_ PerlIO *rsfp)
3836 const Uid_t my_uid = PerlProc_getuid();
3837 const Uid_t my_euid = PerlProc_geteuid();
3838 const Gid_t my_gid = PerlProc_getgid();
3839 const Gid_t my_egid = PerlProc_getegid();
3841 PERL_ARGS_ASSERT_VALIDATE_SUID;
3843 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3845 int fd = PerlIO_fileno(rsfp);
3847 Perl_croak(aTHX_ "Illegal suidscript");
3849 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3850 Perl_croak(aTHX_ "Illegal suidscript");
3853 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3855 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3858 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3859 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3860 /* not set-id, must be wrapped */
3863 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3866 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3872 PERL_ARGS_ASSERT_FIND_BEGINNING;
3874 /* skip forward in input to the real script? */
3877 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3878 Perl_croak(aTHX_ "No Perl script found in input\n");
3880 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3881 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3882 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3884 while (*s == ' ' || *s == '\t') s++;
3886 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3887 || s2[-1] == '_') s2--;
3888 if (strnEQ(s2-4,"perl",4))
3889 while ((s = moreswitches(s)))
3898 /* no need to do anything here any more if we don't
3900 #ifndef NO_TAINT_SUPPORT
3902 const Uid_t my_uid = PerlProc_getuid();
3903 const Uid_t my_euid = PerlProc_geteuid();
3904 const Gid_t my_gid = PerlProc_getgid();
3905 const Gid_t my_egid = PerlProc_getegid();
3907 /* Should not happen: */
3908 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3909 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3913 * Should go by suidscript, not uid!=euid: why disallow
3914 * system("ls") in scripts run from setuid things?
3915 * Or, is this run before we check arguments and set suidscript?
3916 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3917 * (We never have suidscript, can we be sure to have fdscript?)
3918 * Or must then go by UID checks? See comments in forbid_setid also.
3922 /* This is used very early in the lifetime of the program,
3923 * before even the options are parsed, so PL_tainting has
3924 * not been initialized properly. */
3926 Perl_doing_taint(int argc, char *argv[], char *envp[])
3928 #ifndef PERL_IMPLICIT_SYS
3929 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3930 * before we have an interpreter-- and the whole point of this
3931 * function is to be called at such an early stage. If you are on
3932 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3933 * "tainted because running with altered effective ids', you'll
3934 * have to add your own checks somewhere in here. The two most
3935 * known samples of 'implicitness' are Win32 and NetWare, neither
3936 * of which has much of concept of 'uids'. */
3937 Uid_t uid = PerlProc_getuid();
3938 Uid_t euid = PerlProc_geteuid();
3939 Gid_t gid = PerlProc_getgid();
3940 Gid_t egid = PerlProc_getegid();
3947 if (uid && (euid != uid || egid != gid))
3949 #endif /* !PERL_IMPLICIT_SYS */
3950 /* This is a really primitive check; environment gets ignored only
3951 * if -T are the first chars together; otherwise one gets
3952 * "Too late" message. */
3953 if ( argc > 1 && argv[1][0] == '-'
3954 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3959 /* Passing the flag as a single char rather than a string is a slight space
3960 optimisation. The only message that isn't /^-.$/ is
3961 "program input from stdin", which is substituted in place of '\0', which
3962 could never be a command line flag. */
3964 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3967 char string[3] = "-x";
3968 const char *message = "program input from stdin";
3975 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3976 if (PerlProc_getuid() != PerlProc_geteuid())
3977 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3978 if (PerlProc_getgid() != PerlProc_getegid())
3979 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3980 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3982 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3986 Perl_init_dbargs(pTHX)
3988 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3993 /* Someone has already created it.
3994 It might have entries, and if we just turn off AvREAL(), they will
3995 "leak" until global destruction. */
3997 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3998 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4000 AvREIFY_only(PL_dbargs);
4004 Perl_init_debugger(pTHX)
4007 HV * const ostash = PL_curstash;
4009 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4011 Perl_init_dbargs(aTHX);
4012 PL_DBgv = MUTABLE_GV(
4013 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4015 PL_DBline = MUTABLE_GV(
4016 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4018 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4019 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4021 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4022 if (!SvIOK(PL_DBsingle))
4023 sv_setiv(PL_DBsingle, 0);
4024 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4025 if (!SvIOK(PL_DBtrace))
4026 sv_setiv(PL_DBtrace, 0);
4027 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4028 if (!SvIOK(PL_DBsignal))
4029 sv_setiv(PL_DBsignal, 0);
4030 SvREFCNT_dec(PL_curstash);
4031 PL_curstash = ostash;
4034 #ifndef STRESS_REALLOC
4035 #define REASONABLE(size) (size)
4036 #define REASONABLE_but_at_least(size,min) (size)
4038 #define REASONABLE(size) (1) /* unreasonable */
4039 #define REASONABLE_but_at_least(size,min) (min)
4043 Perl_init_stacks(pTHX)
4046 /* start with 128-item stack and 8K cxstack */
4047 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4048 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4049 PL_curstackinfo->si_type = PERLSI_MAIN;
4050 PL_curstack = PL_curstackinfo->si_stack;
4051 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4053 PL_stack_base = AvARRAY(PL_curstack);
4054 PL_stack_sp = PL_stack_base;
4055 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4057 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4060 PL_tmps_max = REASONABLE(128);
4062 Newx(PL_markstack,REASONABLE(32),I32);
4063 PL_markstack_ptr = PL_markstack;
4064 PL_markstack_max = PL_markstack + REASONABLE(32);
4068 Newx(PL_scopestack,REASONABLE(32),I32);
4070 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4072 PL_scopestack_ix = 0;
4073 PL_scopestack_max = REASONABLE(32);
4075 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4076 PL_savestack_ix = 0;
4077 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4086 while (PL_curstackinfo->si_next)
4087 PL_curstackinfo = PL_curstackinfo->si_next;
4088 while (PL_curstackinfo) {
4089 PERL_SI *p = PL_curstackinfo->si_prev;
4090 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4091 Safefree(PL_curstackinfo->si_cxstack);
4092 Safefree(PL_curstackinfo);
4093 PL_curstackinfo = p;
4095 Safefree(PL_tmps_stack);
4096 Safefree(PL_markstack);
4097 Safefree(PL_scopestack);
4099 Safefree(PL_scopestack_name);
4101 Safefree(PL_savestack);
4105 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4107 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4108 AV *const isa = GvAVn(gv);
4111 PERL_ARGS_ASSERT_POPULATE_ISA;
4113 if(AvFILLp(isa) != -1)
4116 /* NOTE: No support for tied ISA */
4118 va_start(args, len);
4120 const char *const parent = va_arg(args, const char*);
4125 parent_len = va_arg(args, size_t);
4127 /* Arguments are supplied with a trailing :: */
4128 assert(parent_len > 2);
4129 assert(parent[parent_len - 1] == ':');
4130 assert(parent[parent_len - 2] == ':');
4131 av_push(isa, newSVpvn(parent, parent_len - 2));
4132 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4139 S_init_predump_symbols(pTHX)
4145 sv_setpvs(get_sv("\"", GV_ADD), " ");
4146 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4149 /* Historically, PVIOs were blessed into IO::Handle, unless
4150 FileHandle was loaded, in which case they were blessed into
4151 that. Action at a distance.
4152 However, if we simply bless into IO::Handle, we break code
4153 that assumes that PVIOs will have (among others) a seek
4154 method. IO::File inherits from IO::Handle and IO::Seekable,
4155 and provides the needed methods. But if we simply bless into
4156 it, then we break code that assumed that by loading
4157 IO::Handle, *it* would work.
4158 So a compromise is to set up the correct @IO::File::ISA,
4159 so that code that does C<use IO::Handle>; will still work.
4162 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4163 STR_WITH_LEN("IO::Handle::"),
4164 STR_WITH_LEN("IO::Seekable::"),
4165 STR_WITH_LEN("Exporter::"),
4168 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4169 GvMULTI_on(PL_stdingv);
4170 io = GvIOp(PL_stdingv);
4171 IoTYPE(io) = IoTYPE_RDONLY;
4172 IoIFP(io) = PerlIO_stdin();
4173 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4175 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4177 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4180 IoTYPE(io) = IoTYPE_WRONLY;
4181 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4183 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4185 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4187 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4188 GvMULTI_on(PL_stderrgv);
4189 io = GvIOp(PL_stderrgv);
4190 IoTYPE(io) = IoTYPE_WRONLY;
4191 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4192 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4194 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4196 PL_statname = newSVpvs(""); /* last filename we did stat on */
4200 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4204 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4206 argc--,argv++; /* skip name of script */
4207 if (PL_doswitches) {
4208 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4212 if (argv[0][1] == '-' && !argv[0][2]) {
4216 if ((s = strchr(argv[0], '='))) {
4217 const char *const start_name = argv[0] + 1;
4218 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4219 TRUE, SVt_PV)), s + 1);
4222 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4225 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4226 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4227 GvMULTI_on(PL_argvgv);
4228 av_clear(GvAVn(PL_argvgv));
4229 for (; argc > 0; argc--,argv++) {
4230 SV * const sv = newSVpv(argv[0],0);
4231 av_push(GvAV(PL_argvgv),sv);
4232 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4233 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4236 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4237 (void)sv_utf8_decode(sv);
4241 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4242 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4243 "-i used with no filenames on the command line, "
4244 "reading from STDIN");
4248 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4253 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4255 PL_toptarget = newSV_type(SVt_PVIV);
4256 sv_setpvs(PL_toptarget, "");
4257 PL_bodytarget = newSV_type(SVt_PVIV);
4258 sv_setpvs(PL_bodytarget, "");
4259 PL_formtarget = PL_bodytarget;
4263 init_argv_symbols(argc,argv);
4265 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4266 sv_setpv(GvSV(tmpgv),PL_origfilename);
4268 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4270 bool env_is_not_environ;
4271 SvREFCNT_inc_simple_void_NN(PL_envgv);
4272 GvMULTI_on(PL_envgv);
4273 hv = GvHVn(PL_envgv);
4274 hv_magic(hv, NULL, PERL_MAGIC_env);
4276 #ifdef USE_ENVIRON_ARRAY
4277 /* Note that if the supplied env parameter is actually a copy
4278 of the global environ then it may now point to free'd memory
4279 if the environment has been modified since. To avoid this
4280 problem we treat env==NULL as meaning 'use the default'
4284 env_is_not_environ = env != environ;
4285 if (env_is_not_environ
4286 # ifdef USE_ITHREADS
4287 && PL_curinterp == aTHX
4296 for (; *env; env++) {
4299 if (!(s = strchr(old_var,'=')) || s == old_var)
4302 #if defined(MSDOS) && !defined(DJGPP)
4304 (void)strupr(old_var);
4307 sv = newSVpv(s+1, 0);
4308 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4309 if (env_is_not_environ)
4313 #endif /* USE_ENVIRON_ARRAY */
4314 #endif /* !PERL_MICRO */
4318 /* touch @F array to prevent spurious warnings 20020415 MJD */
4320 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4325 S_init_perllib(pTHX)
4329 const char *perl5lib = NULL;
4332 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4336 if (!TAINTING_get) {
4338 perl5lib = PerlEnv_getenv("PERL5LIB");
4340 * It isn't possible to delete an environment variable with
4341 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4342 * case we treat PERL5LIB as undefined if it has a zero-length value.
4344 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4345 if (perl5lib && *perl5lib != '\0')
4349 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4351 s = PerlEnv_getenv("PERLLIB");
4353 incpush_use_sep(s, 0, 0);
4356 /* Treat PERL5?LIB as a possible search list logical name -- the
4357 * "natural" VMS idiom for a Unix path string. We allow each
4358 * element to be a set of |-separated directories for compatibility.
4362 if (my_trnlnm("PERL5LIB",buf,0))
4364 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4365 } while (my_trnlnm("PERL5LIB",buf,++idx));
4367 while (my_trnlnm("PERLLIB",buf,idx++))
4368 incpush_use_sep(buf, 0, 0);
4373 #ifndef PERL_IS_MINIPERL
4374 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4375 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4377 /* Use the ~-expanded versions of APPLLIB (undocumented),
4378 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4381 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4382 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4386 /* sitearch is always relative to sitelib on Windows for
4387 * DLL-based path intuition to work correctly */
4388 # if !defined(WIN32)
4389 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4390 INCPUSH_CAN_RELOCATE);
4396 /* this picks up sitearch as well */
4397 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4399 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4401 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4405 #ifdef PERL_VENDORARCH_EXP
4406 /* vendorarch is always relative to vendorlib on Windows for
4407 * DLL-based path intuition to work correctly */
4408 # if !defined(WIN32)
4409 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4410 INCPUSH_CAN_RELOCATE);
4414 #ifdef PERL_VENDORLIB_EXP
4416 /* this picks up vendorarch as well */
4417 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4419 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4421 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4422 INCPUSH_CAN_RELOCATE);
4427 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4431 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4435 s = win32_get_privlib(PERL_FS_VERSION, &len);
4437 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4440 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4442 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4446 #ifdef PERL_OTHERLIBDIRS
4447 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4448 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4449 |INCPUSH_CAN_RELOCATE);
4452 if (!TAINTING_get) {
4455 * It isn't possible to delete an environment variable with
4456 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4457 * case we treat PERL5LIB as undefined if it has a zero-length value.
4459 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4460 if (perl5lib && *perl5lib != '\0')
4464 incpush_use_sep(perl5lib, 0,
4465 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4467 /* Treat PERL5?LIB as a possible search list logical name -- the
4468 * "natural" VMS idiom for a Unix path string. We allow each
4469 * element to be a set of |-separated directories for compatibility.
4473 if (my_trnlnm("PERL5LIB",buf,0))
4475 incpush_use_sep(buf, 0,
4476 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4477 } while (my_trnlnm("PERL5LIB",buf,++idx));
4481 /* Use the ~-expanded versions of APPLLIB (undocumented),
4482 SITELIB and VENDORLIB for older versions
4485 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4486 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4489 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4490 /* Search for version-specific dirs below here */
4491 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4492 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4496 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4497 /* Search for version-specific dirs below here */
4498 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4499 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4502 #ifdef PERL_OTHERLIBDIRS
4503 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4504 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4505 |INCPUSH_CAN_RELOCATE);
4507 #endif /* !PERL_IS_MINIPERL */
4510 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4513 #if defined(DOSISH) || defined(__SYMBIAN32__)
4514 # define PERLLIB_SEP ';'
4517 # define PERLLIB_SEP '|'
4519 # define PERLLIB_SEP ':'
4522 #ifndef PERLLIB_MANGLE
4523 # define PERLLIB_MANGLE(s,n) (s)
4526 #ifndef PERL_IS_MINIPERL
4527 /* Push a directory onto @INC if it exists.
4528 Generate a new SV if we do this, to save needing to copy the SV we push
4531 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4536 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4538 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4539 S_ISDIR(tmpstatbuf.st_mode)) {
4541 dir = newSVsv(stem);
4543 /* Truncate dir back to stem. */
4544 SvCUR_set(dir, SvCUR(stem));
4551 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4553 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4556 PERL_ARGS_ASSERT_MAYBERELOCATE;
4559 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4560 defined to so something (in os2/os2.c), but the code has been
4561 this way, ignoring any possible changed of length, since
4562 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4564 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4570 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4572 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4573 sv_usepvn(libdir,unix,len);
4576 PerlIO_printf(Perl_error_log,
4577 "Failed to unixify @INC element \"%s\"\n",
4578 SvPV_nolen_const(libdir));
4582 /* Do the if() outside the #ifdef to avoid warnings about an unused
4585 #ifdef PERL_RELOCATABLE_INC
4587 * Relocatable include entries are marked with a leading .../
4590 * 0: Remove that leading ".../"
4591 * 1: Remove trailing executable name (anything after the last '/')
4592 * from the perl path to give a perl prefix
4594 * While the @INC element starts "../" and the prefix ends with a real
4595 * directory (ie not . or ..) chop that real directory off the prefix
4596 * and the leading "../" from the @INC element. ie a logical "../"
4598 * Finally concatenate the prefix and the remainder of the @INC element
4599 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4600 * generates /usr/local/lib/perl5
4602 const char *libpath = SvPVX(libdir);
4603 STRLEN libpath_len = SvCUR(libdir);
4604 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4606 SV * const caret_X = get_sv("\030", 0);
4607 /* Going to use the SV just as a scratch buffer holding a C
4613 /* $^X is *the* source of taint if tainting is on, hence
4614 SvPOK() won't be true. */
4616 assert(SvPOKp(caret_X));
4617 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4619 /* Firstly take off the leading .../
4620 If all else fail we'll do the paths relative to the current
4622 sv_chop(libdir, libpath + 4);
4623 /* Don't use SvPV as we're intentionally bypassing taining,
4624 mortal copies that the mg_get of tainting creates, and
4625 corruption that seems to come via the save stack.
4626 I guess that the save stack isn't correctly set up yet. */
4627 libpath = SvPVX(libdir);
4628 libpath_len = SvCUR(libdir);
4630 /* This would work more efficiently with memrchr, but as it's
4631 only a GNU extension we'd need to probe for it and
4632 implement our own. Not hard, but maybe not worth it? */
4634 prefix = SvPVX(prefix_sv);
4635 lastslash = strrchr(prefix, '/');
4637 /* First time in with the *lastslash = '\0' we just wipe off
4638 the trailing /perl from (say) /usr/foo/bin/perl
4642 while ((*lastslash = '\0'), /* Do that, come what may. */
4643 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4644 && (lastslash = strrchr(prefix, '/')))) {
4645 if (lastslash[1] == '\0'
4646 || (lastslash[1] == '.'
4647 && (lastslash[2] == '/' /* ends "/." */
4648 || (lastslash[2] == '/'
4649 && lastslash[3] == '/' /* or "/.." */
4651 /* Prefix ends "/" or "/." or "/..", any of which
4652 are fishy, so don't do any more logical cleanup.
4656 /* Remove leading "../" from path */
4659 /* Next iteration round the loop removes the last
4660 directory name from prefix by writing a '\0' in
4661 the while clause. */
4663 /* prefix has been terminated with a '\0' to the correct
4664 length. libpath points somewhere into the libdir SV.
4665 We need to join the 2 with '/' and drop the result into
4667 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4668 SvREFCNT_dec(libdir);
4669 /* And this is the new libdir. */
4672 (PerlProc_getuid() != PerlProc_geteuid() ||
4673 PerlProc_getgid() != PerlProc_getegid())) {
4674 /* Need to taint relocated paths if running set ID */
4675 SvTAINTED_on(libdir);
4678 SvREFCNT_dec(prefix_sv);
4686 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4689 #ifndef PERL_IS_MINIPERL
4690 const U8 using_sub_dirs
4691 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4692 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4693 const U8 add_versioned_sub_dirs
4694 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4695 const U8 add_archonly_sub_dirs
4696 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4697 #ifdef PERL_INC_VERSION_LIST
4698 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4701 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4702 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4703 AV *const inc = GvAVn(PL_incgv);
4705 PERL_ARGS_ASSERT_INCPUSH;
4708 /* Could remove this vestigial extra block, if we don't mind a lot of
4709 re-indenting diff noise. */
4711 SV *const libdir = mayberelocate(dir, len, flags);
4712 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4713 arranged to unshift #! line -I onto the front of @INC. However,
4714 -I can add version and architecture specific libraries, and they
4715 need to go first. The old code assumed that it was always
4716 pushing. Hence to make it work, need to push the architecture
4717 (etc) libraries onto a temporary array, then "unshift" that onto
4718 the front of @INC. */
4719 #ifndef PERL_IS_MINIPERL
4720 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4723 * BEFORE pushing libdir onto @INC we may first push version- and
4724 * archname-specific sub-directories.
4726 if (using_sub_dirs) {
4727 SV *subdir = newSVsv(libdir);
4728 #ifdef PERL_INC_VERSION_LIST
4729 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4730 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4731 const char * const *incver;
4734 if (add_versioned_sub_dirs) {
4735 /* .../version/archname if -d .../version/archname */
4736 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4737 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4739 /* .../version if -d .../version */
4740 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4741 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4744 #ifdef PERL_INC_VERSION_LIST
4746 for (incver = incverlist; *incver; incver++) {
4747 /* .../xxx if -d .../xxx */
4748 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4749 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4754 if (add_archonly_sub_dirs) {
4755 /* .../archname if -d .../archname */
4756 sv_catpvs(subdir, "/" ARCHNAME);
4757 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4761 assert (SvREFCNT(subdir) == 1);
4762 SvREFCNT_dec(subdir);
4764 #endif /* !PERL_IS_MINIPERL */
4765 /* finally add this lib directory at the end of @INC */
4767 #ifdef PERL_IS_MINIPERL
4768 const Size_t extra = 0;
4770 Size_t extra = av_tindex(av) + 1;
4772 av_unshift(inc, extra + push_basedir);
4774 av_store(inc, extra, libdir);
4775 #ifndef PERL_IS_MINIPERL
4777 /* av owns a reference, av_store() expects to be donated a
4778 reference, and av expects to be sane when it's cleared.
4779 If I wanted to be naughty and wrong, I could peek inside the
4780 implementation of av_clear(), realise that it uses
4781 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4782 and so directly steal from it (with a memcpy() to inc, and
4783 then memset() to NULL them out. But people copy code from the
4784 core expecting it to be best practise, so let's use the API.
4785 Although studious readers will note that I'm not checking any
4787 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4792 else if (push_basedir) {
4793 av_push(inc, libdir);
4796 if (!push_basedir) {
4797 assert (SvREFCNT(libdir) == 1);
4798 SvREFCNT_dec(libdir);
4804 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4808 /* This logic has been broken out from S_incpush(). It may be possible to
4811 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4813 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4814 * argument to incpush_use_sep. This allows creation of relocatable
4815 * Perl distributions that patch the binary at install time. Those
4816 * distributions will have to provide their own relocation tools; this
4817 * is not a feature otherwise supported by core Perl.
4819 #ifndef PERL_RELOCATABLE_INCPUSH
4826 /* Break at all separators */
4827 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4829 /* skip any consecutive separators */
4831 /* Uncomment the next line for PATH semantics */
4832 /* But you'll need to write tests */
4833 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4835 incpush(p, (STRLEN)(s - p), flags);
4840 incpush(p, (STRLEN)(end - p), flags);
4845 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4849 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4855 PERL_ARGS_ASSERT_CALL_LIST;
4857 while (av_tindex(paramList) >= 0) {
4858 cv = MUTABLE_CV(av_shift(paramList));
4860 if (paramList == PL_beginav) {
4861 /* save PL_beginav for compiler */
4862 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4864 else if (paramList == PL_checkav) {
4865 /* save PL_checkav for compiler */
4866 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4868 else if (paramList == PL_unitcheckav) {
4869 /* save PL_unitcheckav for compiler */
4870 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4881 PL_madskills |= 16384;
4886 PL_madskills &= ~16384;
4889 (void)SvPV_const(atsv, len);
4891 PL_curcop = &PL_compiling;
4892 CopLINE_set(PL_curcop, oldline);
4893 if (paramList == PL_beginav)
4894 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4896 Perl_sv_catpvf(aTHX_ atsv,
4897 "%s failed--call queue aborted",
4898 paramList == PL_checkav ? "CHECK"
4899 : paramList == PL_initav ? "INIT"
4900 : paramList == PL_unitcheckav ? "UNITCHECK"
4902 while (PL_scopestack_ix > oldscope)
4905 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4912 /* my_exit() was called */
4913 while (PL_scopestack_ix > oldscope)
4916 SET_CURSTASH(PL_defstash);
4917 PL_curcop = &PL_compiling;
4918 CopLINE_set(PL_curcop, oldline);
4921 assert(0); /* NOTREACHED */
4924 PL_curcop = &PL_compiling;
4925 CopLINE_set(PL_curcop, oldline);
4928 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4937 Perl_my_exit(pTHX_ U32 status)
4940 if (PL_exit_flags & PERL_EXIT_ABORT) {
4943 if (PL_exit_flags & PERL_EXIT_WARN) {
4944 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4945 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4946 PL_exit_flags &= ~PERL_EXIT_ABORT;
4956 STATUS_EXIT_SET(status);
4963 Perl_my_failure_exit(pTHX)
4967 /* We have been called to fall on our sword. The desired exit code
4968 * should be already set in STATUS_UNIX, but could be shifted over
4969 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4972 * If an error code has not been set, then force the issue.
4974 if (MY_POSIX_EXIT) {
4976 /* According to the die_exit.t tests, if errno is non-zero */
4977 /* It should be used for the error status. */
4979 if (errno == EVMSERR) {
4980 STATUS_NATIVE = vaxc$errno;
4983 /* According to die_exit.t tests, if the child_exit code is */
4984 /* also zero, then we need to exit with a code of 255 */
4985 if ((errno != 0) && (errno < 256))
4986 STATUS_UNIX_EXIT_SET(errno);
4987 else if (STATUS_UNIX < 255) {
4988 STATUS_UNIX_EXIT_SET(255);
4993 /* The exit code could have been set by $? or vmsish which
4994 * means that it may not have fatal set. So convert
4995 * success/warning codes to fatal with out changing
4996 * the POSIX status code. The severity makes VMS native
4997 * status handling work, while UNIX mode programs use the
4998 * the POSIX exit codes.
5000 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5001 STATUS_NATIVE &= STS$M_COND_ID;
5002 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5006 /* Traditionally Perl on VMS always expects a Fatal Error. */
5007 if (vaxc$errno & 1) {
5009 /* So force success status to failure */
5010 if (STATUS_NATIVE & 1)
5015 STATUS_UNIX = EINTR; /* In case something cares */
5020 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5022 /* Encode the severity code */
5023 severity = STATUS_NATIVE & STS$M_SEVERITY;
5024 STATUS_UNIX = (severity ? severity : 1) << 8;
5026 /* Perl expects this to be a fatal error */
5027 if (severity != STS$K_SEVERE)
5036 STATUS_UNIX_SET(errno);
5038 exitstatus = STATUS_UNIX >> 8;
5039 if (exitstatus & 255)
5040 STATUS_UNIX_SET(exitstatus);
5042 STATUS_UNIX_SET(255);
5045 if (PL_exit_flags & PERL_EXIT_ABORT) {
5048 if (PL_exit_flags & PERL_EXIT_WARN) {
5049 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5050 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5051 PL_exit_flags &= ~PERL_EXIT_ABORT;
5057 S_my_exit_jump(pTHX)
5062 SvREFCNT_dec(PL_e_script);
5066 POPSTACK_TO(PL_mainstack);
5074 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5077 const char * const p = SvPVX_const(PL_e_script);
5078 const char *nl = strchr(p, '\n');
5080 PERL_UNUSED_ARG(idx);
5081 PERL_UNUSED_ARG(maxlen);
5083 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5085 filter_del(read_e_script);
5088 sv_catpvn(buf_sv, p, nl-p);
5089 sv_chop(PL_e_script, nl);
5095 * c-indentation-style: bsd
5097 * indent-tabs-mode: nil
5100 * ex: set ts=8 sts=4 sw=4 et: