4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
61 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
62 char *getenv (char *); /* Usually in <stdlib.h> */
65 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
67 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
68 # define validate_suid(rsfp) NOOP
70 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
73 #define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
79 #define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
84 S_init_tls_and_interp(PerlInterpreter *my_perl)
88 PERL_SET_INTERP(my_perl);
89 #if defined(USE_ITHREADS)
92 PERL_SET_THX(my_perl);
96 MUTEX_INIT(&PL_dollarzero_mutex);
97 MUTEX_INIT(&PL_my_ctx_mutex);
100 #if defined(USE_ITHREADS)
103 /* This always happens for non-ithreads */
106 PERL_SET_THX(my_perl);
111 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114 Perl_sys_init(int* argc, char*** argv)
118 PERL_ARGS_ASSERT_SYS_INIT;
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
126 Perl_sys_init3(int* argc, char*** argv, char*** env)
130 PERL_ARGS_ASSERT_SYS_INIT3;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
148 #ifdef PERL_IMPLICIT_SYS
150 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
156 PerlInterpreter *my_perl;
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160 /* Newx() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
162 S_init_tls_and_interp(my_perl);
163 Zero(my_perl, 1, PerlInterpreter);
173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
180 =head1 Embedding Functions
182 =for apidoc perl_alloc
184 Allocates a new Perl interpreter. See L<perlembed>.
192 PerlInterpreter *my_perl;
194 /* Newx() needs interpreter, so call malloc() instead */
195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
197 S_init_tls_and_interp(my_perl);
198 #ifndef PERL_TRACK_MEMPOOL
199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
206 #endif /* PERL_IMPLICIT_SYS */
209 =for apidoc perl_construct
211 Initializes a new Perl interpreter. See L<perlembed>.
217 perl_construct(pTHXx)
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
225 PL_perl_destruct_level = 1;
227 PERL_UNUSED_ARG(my_perl);
228 if (PL_perl_destruct_level > 0)
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 #ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
239 SvREADONLY_on(&PL_sv_placeholder);
240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
243 #ifdef PERL_USES_PL_PIDSTATUS
244 PL_pidstatus = newHV();
247 PL_rs = newSVpvs("\n");
258 #if defined(LOCAL_PATCH_COUNT)
259 PL_localpatches = local_patches; /* For possible -v */
262 #ifdef HAVE_INTERP_INTERN
266 PerlIO_init(aTHX); /* Hook to IO system */
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
270 PL_errors = newSVpvs("");
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
278 PL_regex_pad = AvARRAY(PL_regex_padav);
279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
281 #ifdef USE_REENTRANT_API
282 Perl_reentrant_init(aTHX);
284 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
296 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 # ifdef USE_ENVIRON_ARRAY
310 PL_origenviron = environ;
314 /* Use sysconf(_SC_CLK_TCK) if available, if not
315 * available or if the sysconf() fails, use the HZ.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
329 if (!PL_mmap_page_size) {
330 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 SETERRNO(0, SS_NORMAL);
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338 if ((long) PL_mmap_page_size < 0) {
340 SV * const error = ERRSV;
341 SvUPGRADE(error, SVt_PV);
342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
349 # ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
352 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
361 #endif /* HAS_MMAP */
363 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372 PL_registered_mros = newHV();
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
400 =for apidoc nothreadhook
402 Stub that provides thread hook for perl_destruct when there are
409 Perl_nothreadhook(pTHX)
415 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417 Perl_dump_sv_child(pTHX_ SV *sv)
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
422 union control_un control;
425 struct cmsghdr *cmptr;
427 unsigned char buffer[256];
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431 if(sock == -1 || debug_fd == -1)
434 PerlIO_flush(Perl_debug_log);
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
440 be open, the wait would be forever.) */
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
461 perror("Debug leaking scalars parent sendmsg failed");
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
469 /* Return protocol is
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
479 got = readv(sock, vec, 2);
482 perror("Debug leaking scalars parent read failed");
483 PerlIO_flush(PerlIO_stderr());
486 if(got < sizeof(returned_errno) + 1) {
487 perror("Debug leaking scalars parent short read");
488 PerlIO_flush(PerlIO_stderr());
493 got = read(sock, buffer + 1, *buffer);
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
510 returned_errno, Strerror(returned_errno));
516 =for apidoc perl_destruct
518 Shuts down a Perl interpreter. See L<perlembed>.
527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
529 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 assert(PL_scopestack_ix == 1);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
545 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
560 if (destruct_level < i) destruct_level = i;
562 #ifdef PERL_TRACK_MEMPOOL
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
576 if (PL_endav && !PL_minus_c) {
577 PERL_SET_PHASE(PERL_PHASE_END);
578 call_list(PL_scopestack_ix, PL_endav);
584 assert(PL_scopestack_ix == 0);
586 /* Need to flush since END blocks can produce output */
589 #ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
603 if (PL_threadhook(aTHX)) {
604 /* Threads hook has vetoed further cleanup */
605 PL_veto_cleanup = TRUE;
609 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
625 perror("Debug leaking scalars fork failed");
629 /* We are the child */
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
634 /* Our success message is an integer 0, and a char 0 */
635 static const char success[sizeof(int) + 1] = {0};
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
651 f = sysconf(_SC_OPEN_MAX);
653 where = "sysconf failed";
664 union control_un control;
667 struct cmsghdr *cmptr;
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
679 vec[0].iov_base = (void*)⌖
680 vec[0].iov_len = sizeof(target);
682 got = recvmsg(sock, &msg, 0);
687 where = "recv failed";
690 if(got < sizeof(target)) {
691 where = "short recv";
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
724 PerlIO_flush(Perl_debug_log);
726 got = write(sock, &success, sizeof(success));
729 where = "write failed";
732 if(got < sizeof(success)) {
733 where = "short write";
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
745 {(void*)where, length}
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
754 _exit((got == -1) ? errno : 0);
758 PL_dumper_fd = fd[0];
763 /* We must account for everything. */
765 /* Destroy the main CV and syntax tree */
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
770 PL_curcop = &PL_compiling;
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
777 op_free(PL_main_root);
780 PL_main_start = NULL;
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
785 SvREFCNT_dec(PL_main_cv);
787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
794 PerlIO_destruct(aTHX);
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
803 /* unhook hooks which will soon be, or use, destroyed data */
804 SvREFCNT_dec(PL_warnhook);
806 SvREFCNT_dec(PL_diehook);
809 /* call exit list functions */
810 while (PL_exitlistlen-- > 0)
811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
813 Safefree(PL_exitlist);
818 SvREFCNT_dec(PL_registered_mros);
820 /* jettison our possibly duplicated environment */
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
825 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
826 if (environ != PL_origenviron && !PL_use_safe_putenv
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
835 for (i = 0; environ[i]; i++)
836 safesysfree(environ[i]);
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
841 environ = PL_origenviron;
844 #endif /* !PERL_MICRO */
846 if (destruct_level == 0) {
848 DEBUG_P(debprofdump());
850 #if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
855 CopFILE_free(&PL_compiling);
857 /* The exit() function will do everything that needs doing. */
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
882 PL_stashcache = NULL;
884 /* loosen bonds of global variables */
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
893 Safefree(PL_splitstr);
903 PL_doswitches = FALSE;
904 PL_dowarn = G_WARN_OFF;
905 #ifdef PERL_SAWAMPERSAND
906 PL_sawampersand = 0; /* must save all match strings */
910 Safefree(PL_inplace);
912 SvREFCNT_dec(PL_patchlevel);
915 SvREFCNT_dec(PL_e_script);
921 /* magical thingies */
923 SvREFCNT_dec(PL_ofsgv); /* *, */
926 SvREFCNT_dec(PL_ors_sv); /* $\ */
929 SvREFCNT_dec(PL_rs); /* $/ */
932 Safefree(PL_osname); /* $^O */
935 SvREFCNT_dec(PL_statname);
939 /* defgv, aka *_ should be taken care of elsewhere */
942 Safefree(PL_efloatbuf);
946 /* startup and shutdown function lists */
947 SvREFCNT_dec(PL_beginav);
948 SvREFCNT_dec(PL_beginav_save);
949 SvREFCNT_dec(PL_endav);
950 SvREFCNT_dec(PL_checkav);
951 SvREFCNT_dec(PL_checkav_save);
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
954 SvREFCNT_dec(PL_initav);
956 PL_beginav_save = NULL;
959 PL_checkav_save = NULL;
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
964 /* shortcuts just get cleared */
970 PL_last_in_gv = NULL;
981 SvREFCNT_dec(PL_envgv);
982 SvREFCNT_dec(PL_incgv);
983 SvREFCNT_dec(PL_argvgv);
984 SvREFCNT_dec(PL_replgv);
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
996 SvREFCNT_dec(PL_argvout_stack);
997 PL_argvout_stack = NULL;
999 SvREFCNT_dec(PL_modglobal);
1000 PL_modglobal = NULL;
1001 SvREFCNT_dec(PL_preambleav);
1002 PL_preambleav = NULL;
1003 SvREFCNT_dec(PL_subname);
1005 #ifdef PERL_USES_PL_PIDSTATUS
1006 SvREFCNT_dec(PL_pidstatus);
1007 PL_pidstatus = NULL;
1009 SvREFCNT_dec(PL_toptarget);
1010 PL_toptarget = NULL;
1011 SvREFCNT_dec(PL_bodytarget);
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
1015 /* free locale stuff */
1016 #ifdef USE_LOCALE_COLLATE
1017 Safefree(PL_collation_name);
1018 PL_collation_name = NULL;
1021 #ifdef USE_LOCALE_NUMERIC
1022 Safefree(PL_numeric_name);
1023 PL_numeric_name = NULL;
1024 SvREFCNT_dec(PL_numeric_radix_sv);
1025 PL_numeric_radix_sv = NULL;
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
1035 SvREFCNT_dec(PL_utf8_totitle);
1036 SvREFCNT_dec(PL_utf8_tolower);
1037 SvREFCNT_dec(PL_utf8_tofold);
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
1040 SvREFCNT_dec(PL_utf8_foldable);
1041 SvREFCNT_dec(PL_utf8_foldclosures);
1042 SvREFCNT_dec(PL_AboveLatin1);
1043 SvREFCNT_dec(PL_InBitmap);
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
1048 #ifdef USE_LOCALE_CTYPE
1049 SvREFCNT_dec(PL_warn_locale);
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
1058 PL_utf8_foldclosures = NULL;
1059 PL_AboveLatin1 = NULL;
1061 PL_HasMultiCharFold = NULL;
1062 #ifdef USE_LOCALE_CTYPE
1063 PL_warn_locale = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
1072 PL_GCB_invlist = NULL;
1073 PL_SB_invlist = NULL;
1074 PL_WB_invlist = NULL;
1076 if (!specialWARN(PL_compiling.cop_warnings))
1077 PerlMemShared_free(PL_compiling.cop_warnings);
1078 PL_compiling.cop_warnings = NULL;
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1081 CopFILE_free(&PL_compiling);
1083 /* Prepare to destruct main symbol table. */
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1090 SvREFCNT_dec(PL_curstname);
1091 PL_curstname = NULL;
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
1097 SvREFCNT_dec(PL_isarev);
1100 if (destruct_level >= 2) {
1101 if (PL_scopestack_ix != 0)
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
1105 if (PL_savestack_ix != 0)
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
1109 if (PL_tmps_floor != -1)
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
1112 if (cxstack_ix != -1)
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1123 #ifdef PERL_IMPLICIT_CONTEXT
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
1131 /* the 2 is for PL_fdpid and PL_strtab */
1132 while (sv_clean_all() > 2)
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1143 #ifdef HAVE_INTERP_INTERN
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1153 /* Destruct the global string table. */
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
1162 const I32 max = HvMAX(PL_strtab);
1163 HE * const * const array = HvARRAY(PL_strtab);
1164 HE *hent = array[0];
1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
1168 HE * const next = HeNEXT(hent);
1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1178 hent = array[riter];
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
1186 SvREFCNT_dec(PL_strtab);
1189 /* free the pointer tables used for cloning */
1190 ptr_table_free(PL_ptr_table);
1191 PL_ptr_table = (PTR_TBL_t*)NULL;
1194 /* free special SVs */
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
1199 SvFLAGS(&PL_sv_yes) = 0;
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
1204 SvFLAGS(&PL_sv_no) = 0;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1219 #ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
1241 PTR2UV(sv->sv_debug_parent),
1244 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1245 Perl_dump_sv_child(aTHX_ sv);
1251 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1258 struct timeval waitfor = {4, 0};
1259 int sock = PL_dumper_fd;
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1270 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1276 #if defined(PERLIO_LAYERS)
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1282 as currently layers use it rather than NULL as a marker
1283 for no arg - and will try and SvREFCNT_dec it.
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1288 Safefree(PL_origfilename);
1289 PL_origfilename = NULL;
1290 Safefree(PL_reg_curpm);
1291 free_tied_hv_pool();
1292 Safefree(PL_op_mask);
1293 Safefree(PL_psig_name);
1294 PL_psig_name = (SV**)NULL;
1295 PL_psig_ptr = (SV**)NULL;
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1308 DEBUG_P(debprofdump());
1312 #ifdef USE_REENTRANT_API
1313 Perl_reentrant_free(aTHX);
1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1334 /* we know that type == SVt_PVMG */
1336 /* it could have accumulated taint magic */
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1343 Safefree(mg->mg_ptr);
1347 /* we know that type >= SVt_PV */
1348 SvPV_free(PL_mess_sv);
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
1357 =for apidoc perl_free
1359 Releases a Perl interpreter. See L<perlembed>.
1369 PERL_ARGS_ASSERT_PERL_FREE;
1371 if (PL_veto_cleanup)
1374 #ifdef PERL_TRACK_MEMPOOL
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1380 if (PL_perl_destruct_level == 0) {
1381 const U32 old_debug = PL_debug;
1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1394 PL_debug = old_debug;
1399 #if defined(WIN32) || defined(NETWARE)
1400 # if defined(PERL_IMPLICIT_SYS)
1403 void *host = nw_internal_host;
1404 PerlMem_free(aTHXx);
1405 nw_delete_internal_host(host);
1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
1409 win32_delete_internal_host(host);
1413 PerlMem_free(aTHXx);
1416 PerlMem_free(aTHXx);
1420 #if defined(USE_ITHREADS)
1421 /* provide destructors to clean up the thread key when libperl is unloaded */
1422 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1424 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1425 #pragma fini "perl_fini"
1426 #elif defined(__sun) && !defined(__GNUC__)
1427 #pragma fini (perl_fini)
1431 #if defined(__GNUC__)
1432 __attribute__((destructor))
1438 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1441 PL_curinterp && !PL_veto_cleanup)
1446 #endif /* THREADS */
1449 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1458 =for apidoc perl_parse
1460 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1465 #define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1472 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480 #ifndef MULTIPLICITY
1481 PERL_UNUSED_ARG(my_perl);
1483 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1487 if (s && strEQ(s, "1")) {
1488 const unsigned char *seed= PERL_HASH_SEED;
1489 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1494 #ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1499 PerlIO_printf(Perl_debug_log, "\n");
1502 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1506 struct NameTranslationInfo nti;
1507 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
1523 * the original argv[0]. (See below for 'contiguous', though.)
1525 const char *s = NULL;
1527 const UV mask = ~(UV)(PTRSIZE-1);
1528 /* Do the mask check only if the args seem like aligned. */
1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
1546 || PL_origargv[i] == s + 2
1551 (PL_origargv[i] > s &&
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1564 #ifndef PERL_USE_SAFE_PUTENV
1565 /* Can we grab env area too to be used as the area for $0? */
1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
1567 if ((PL_origenviron[0] == s + 1)
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1576 s = PL_origenviron[0];
1579 my_setenv("NoNe SuCh", NULL);
1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1590 s = PL_origenviron[i];
1598 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1605 /* Come here if running an undumped a.out. */
1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
1609 cxstack_ix = -1; /* start label stack again */
1611 assert (!TAINT_get);
1615 init_postdump_symbols(argc,argv,env);
1620 op_free(PL_main_root);
1621 PL_main_root = NULL;
1623 PL_main_start = NULL;
1624 SvREFCNT_dec(PL_main_cv);
1628 oldscope = PL_scopestack_ix;
1629 PL_dowarn = G_WARN_OFF;
1634 parse_body(env,xsinit);
1635 if (PL_unitcheckav) {
1636 call_list(oldscope, PL_unitcheckav);
1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
1640 call_list(oldscope, PL_checkav);
1648 /* my_exit() was called */
1649 while (PL_scopestack_ix > oldscope)
1652 SET_CURSTASH(PL_defstash);
1653 if (PL_unitcheckav) {
1654 call_list(oldscope, PL_unitcheckav);
1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
1658 call_list(oldscope, PL_checkav);
1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1671 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1674 /* What this returns is subject to change. Use the public interface in Config.
1677 S_Internals_V(pTHX_ CV *cv)
1680 #ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1683 const int local_patch_count = 0;
1685 const int entries = 3 + local_patch_count;
1687 static const char non_bincompat_options[] =
1694 # ifdef NO_HASH_SEED
1697 # ifdef NO_TAINT_SUPPORT
1700 # ifdef PERL_BOOL_AS_CHAR
1701 " PERL_BOOL_AS_CHAR"
1703 # ifdef PERL_COPY_ON_WRITE
1704 " PERL_COPY_ON_WRITE"
1706 # ifdef PERL_DISABLE_PMC
1709 # ifdef PERL_DONT_CREATE_GVSV
1710 " PERL_DONT_CREATE_GVSV"
1712 # ifdef PERL_EXTERNAL_GLOB
1713 " PERL_EXTERNAL_GLOB"
1715 # ifdef PERL_HASH_FUNC_SIPHASH
1716 " PERL_HASH_FUNC_SIPHASH"
1718 # ifdef PERL_HASH_FUNC_SDBM
1719 " PERL_HASH_FUNC_SDBM"
1721 # ifdef PERL_HASH_FUNC_DJB2
1722 " PERL_HASH_FUNC_DJB2"
1724 # ifdef PERL_HASH_FUNC_SUPERFAST
1725 " PERL_HASH_FUNC_SUPERFAST"
1727 # ifdef PERL_HASH_FUNC_MURMUR3
1728 " PERL_HASH_FUNC_MURMUR3"
1730 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1731 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1733 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1734 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1736 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1737 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1739 # ifdef PERL_IS_MINIPERL
1742 # ifdef PERL_MALLOC_WRAP
1745 # ifdef PERL_MEM_LOG
1748 # ifdef PERL_MEM_LOG_NOIMPL
1749 " PERL_MEM_LOG_NOIMPL"
1751 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1752 " PERL_PERTURB_KEYS_DETERMINISTIC"
1754 # ifdef PERL_PERTURB_KEYS_DISABLED
1755 " PERL_PERTURB_KEYS_DISABLED"
1757 # ifdef PERL_PERTURB_KEYS_RANDOM
1758 " PERL_PERTURB_KEYS_RANDOM"
1760 # ifdef PERL_PRESERVE_IVUV
1761 " PERL_PRESERVE_IVUV"
1763 # ifdef PERL_RELOCATABLE_INCPUSH
1764 " PERL_RELOCATABLE_INCPUSH"
1766 # ifdef PERL_USE_DEVEL
1769 # ifdef PERL_USE_SAFE_PUTENV
1770 " PERL_USE_SAFE_PUTENV"
1772 # ifdef UNLINK_ALL_VERSIONS
1773 " UNLINK_ALL_VERSIONS"
1775 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1776 " USE_ATTRIBUTES_FOR_PERLIO"
1778 # ifdef USE_FAST_STDIO
1781 # ifdef USE_HASH_SEED_EXPLICIT
1782 " USE_HASH_SEED_EXPLICIT"
1787 # ifdef USE_LOCALE_CTYPE
1790 # ifdef WIN32_NO_REGISTRY
1793 # ifdef USE_PERL_ATOF
1796 # ifdef USE_SITECUSTOMIZE
1797 " USE_SITECUSTOMIZE"
1800 PERL_UNUSED_ARG(cv);
1801 PERL_UNUSED_VAR(items);
1803 EXTEND(SP, entries);
1805 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1806 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1807 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1811 PUSHs(Perl_newSVpvn_flags(aTHX_
1812 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1815 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1819 PUSHs(&PL_sv_undef);
1822 for (i = 1; i <= local_patch_count; i++) {
1823 /* This will be an undef, if PL_localpatches[i] is NULL. */
1824 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1830 #define INCPUSH_UNSHIFT 0x01
1831 #define INCPUSH_ADD_OLD_VERS 0x02
1832 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1833 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1834 #define INCPUSH_NOT_BASEDIR 0x10
1835 #define INCPUSH_CAN_RELOCATE 0x20
1836 #define INCPUSH_ADD_SUB_DIRS \
1837 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1840 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1844 int argc = PL_origargc;
1845 char **argv = PL_origargv;
1846 const char *scriptname = NULL;
1847 bool dosearch = FALSE;
1849 bool doextract = FALSE;
1850 const char *cddir = NULL;
1851 #ifdef USE_SITECUSTOMIZE
1852 bool minus_f = FALSE;
1854 SV *linestr_sv = NULL;
1855 bool add_read_e_script = FALSE;
1856 U32 lex_start_flags = 0;
1858 PERL_SET_PHASE(PERL_PHASE_START);
1864 for (argc--,argv++; argc > 0; argc--,argv++) {
1865 if (argv[0][0] != '-' || !argv[0][1])
1871 #ifndef PERL_STRICT_CR
1895 if ((s = moreswitches(s)))
1900 #if defined(SILENT_NO_TAINT_SUPPORT)
1901 /* silently ignore */
1902 #elif defined(NO_TAINT_SUPPORT)
1903 Perl_croak_nocontext("This perl was compiled without taint support. "
1904 "Cowardly refusing to run with -t or -T flags");
1906 CHECK_MALLOC_TOO_LATE_FOR('t');
1907 if( !TAINTING_get ) {
1908 TAINT_WARN_set(TRUE);
1915 #if defined(SILENT_NO_TAINT_SUPPORT)
1916 /* silently ignore */
1917 #elif defined(NO_TAINT_SUPPORT)
1918 Perl_croak_nocontext("This perl was compiled without taint support. "
1919 "Cowardly refusing to run with -t or -T flags");
1921 CHECK_MALLOC_TOO_LATE_FOR('T');
1923 TAINT_WARN_set(FALSE);
1932 forbid_setid('e', FALSE);
1934 PL_e_script = newSVpvs("");
1935 add_read_e_script = TRUE;
1938 sv_catpv(PL_e_script, s);
1940 sv_catpv(PL_e_script, argv[1]);
1944 Perl_croak(aTHX_ "No code specified for -%c", c);
1945 sv_catpvs(PL_e_script, "\n");
1949 #ifdef USE_SITECUSTOMIZE
1955 case 'I': /* -I handled both here and in moreswitches() */
1956 forbid_setid('I', FALSE);
1957 if (!*++s && (s=argv[1]) != NULL) {
1961 STRLEN len = strlen(s);
1962 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1965 Perl_croak(aTHX_ "No directory specified for -I");
1968 forbid_setid('S', FALSE);
1977 opts_prog = newSVpvs("use Config; Config::_V()");
1981 opts_prog = Perl_newSVpvf(aTHX_
1982 "use Config; Config::config_vars(qw%c%s%c)",
1986 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1987 /* don't look for script or read stdin */
1988 scriptname = BIT_BUCKET;
2000 if (!*++s || isSPACE(*s)) {
2004 /* catch use of gnu style long options.
2005 Both of these exit immediately. */
2006 if (strEQ(s, "version"))
2008 if (strEQ(s, "help"))
2013 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2024 #ifndef SECURE_INTERNAL_GETENV
2027 (s = PerlEnv_getenv("PERL5OPT")))
2029 /* s points to static memory in getenv(), which may be overwritten at
2030 * any time; use a mortal copy instead */
2031 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2035 if (*s == '-' && *(s+1) == 'T') {
2036 #if defined(SILENT_NO_TAINT_SUPPORT)
2037 /* silently ignore */
2038 #elif defined(NO_TAINT_SUPPORT)
2039 Perl_croak_nocontext("This perl was compiled without taint support. "
2040 "Cowardly refusing to run with -t or -T flags");
2042 CHECK_MALLOC_TOO_LATE_FOR('T');
2044 TAINT_WARN_set(FALSE);
2048 char *popt_copy = NULL;
2061 if (!strchr("CDIMUdmtwW", *s))
2062 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2066 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2067 s = popt_copy + (s - d);
2075 #if defined(SILENT_NO_TAINT_SUPPORT)
2076 /* silently ignore */
2077 #elif defined(NO_TAINT_SUPPORT)
2078 Perl_croak_nocontext("This perl was compiled without taint support. "
2079 "Cowardly refusing to run with -t or -T flags");
2081 if( !TAINTING_get) {
2082 TAINT_WARN_set(TRUE);
2094 /* Set $^X early so that it can be used for relocatable paths in @INC */
2095 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2096 assert (!TAINT_get);
2101 #if defined(USE_SITECUSTOMIZE)
2103 /* The games with local $! are to avoid setting errno if there is no
2104 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2105 ie a q() operator with a NUL byte as a the delimiter. This avoids
2106 problems with pathnames containing (say) ' */
2107 # ifdef PERL_IS_MINIPERL
2108 AV *const inc = GvAV(PL_incgv);
2109 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2112 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2113 it should be reported immediately as a build failure. */
2114 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2116 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2117 "do {local $!; -f $f }"
2118 " and do $f || die $@ || qq '$f: $!' }",
2119 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2122 /* SITELIB_EXP is a function call on Win32. */
2123 const char *const raw_sitelib = SITELIB_EXP;
2125 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2126 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2127 INCPUSH_CAN_RELOCATE);
2128 const char *const sitelib = SvPVX(sitelib_sv);
2129 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2131 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2132 0, SVfARG(sitelib), 0,
2133 0, SVfARG(sitelib), 0));
2134 assert (SvREFCNT(sitelib_sv) == 1);
2135 SvREFCNT_dec(sitelib_sv);
2142 scriptname = argv[0];
2145 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2147 else if (scriptname == NULL) {
2149 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2155 assert (!TAINT_get);
2159 bool suidscript = FALSE;
2161 rsfp = open_script(scriptname, dosearch, &suidscript);
2163 rsfp = PerlIO_stdin();
2164 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2167 validate_suid(rsfp);
2170 # if defined(SIGCHLD) || defined(SIGCLD)
2173 # define SIGCHLD SIGCLD
2175 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2176 if (sigstate == (Sighandler_t) SIG_IGN) {
2177 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2178 "Can't ignore signal CHLD, forcing to default");
2179 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2187 /* This will croak if suidscript is true, as -x cannot be used with
2189 forbid_setid('x', suidscript);
2190 /* Hence you can't get here if suidscript is true */
2192 linestr_sv = newSV_type(SVt_PV);
2193 lex_start_flags |= LEX_START_COPIED;
2194 find_beginning(linestr_sv, rsfp);
2195 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2196 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2200 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2201 CvUNIQUE_on(PL_compcv);
2203 CvPADLIST_set(PL_compcv, pad_new(0));
2205 PL_isarev = newHV();
2208 boot_core_UNIVERSAL();
2210 newXS("Internals::V", S_Internals_V, __FILE__);
2213 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2215 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2221 # ifdef HAS_SOCKS5_INIT
2222 socks5_init(argv[0]);
2228 init_predump_symbols();
2229 /* init_postdump_symbols not currently designed to be called */
2230 /* more than once (ENV isn't cleared first, for example) */
2231 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2233 init_postdump_symbols(argc,argv,env);
2235 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2236 * or explicitly in some platforms.
2237 * locale.c:Perl_init_i18nl10n() if the environment
2238 * look like the user wants to use UTF-8. */
2239 #if defined(__SYMBIAN32__)
2240 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2242 # ifndef PERL_IS_MINIPERL
2244 /* Requires init_predump_symbols(). */
2245 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2250 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2251 * and the default open disciplines. */
2252 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2253 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2255 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2256 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2257 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2259 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2260 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2261 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2263 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2264 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2265 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2267 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2268 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2271 sv_setpvs(sv, ":utf8\0:utf8");
2273 sv_setpvs(sv, ":utf8\0");
2276 sv_setpvs(sv, "\0:utf8");
2285 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2286 if (strEQ(s, "unsafe"))
2287 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2288 else if (strEQ(s, "safe"))
2289 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2291 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2296 lex_start(linestr_sv, rsfp, lex_start_flags);
2297 SvREFCNT_dec(linestr_sv);
2299 PL_subname = newSVpvs("main");
2301 if (add_read_e_script)
2302 filter_add(read_e_script, NULL);
2304 /* now parse the script */
2306 SETERRNO(0,SS_NORMAL);
2307 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2309 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2311 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2315 CopLINE_set(PL_curcop, 0);
2316 SET_CURSTASH(PL_defstash);
2318 SvREFCNT_dec(PL_e_script);
2326 SAVECOPFILE(PL_curcop);
2327 SAVECOPLINE(PL_curcop);
2328 gv_check(PL_defstash);
2338 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2339 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2340 dump_mstats("after compilation:");
2345 PL_restartjmpenv = NULL;
2351 =for apidoc perl_run
2353 Tells a Perl interpreter to run. See L<perlembed>.
2365 PERL_ARGS_ASSERT_PERL_RUN;
2366 #ifndef MULTIPLICITY
2367 PERL_UNUSED_ARG(my_perl);
2370 oldscope = PL_scopestack_ix;
2378 cxstack_ix = -1; /* start context stack again */
2380 case 0: /* normal completion */
2384 case 2: /* my_exit() */
2385 while (PL_scopestack_ix > oldscope)
2388 SET_CURSTASH(PL_defstash);
2389 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2390 PL_endav && !PL_minus_c) {
2391 PERL_SET_PHASE(PERL_PHASE_END);
2392 call_list(oldscope, PL_endav);
2395 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2396 dump_mstats("after execution: ");
2402 POPSTACK_TO(PL_mainstack);
2405 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2416 S_run_body(pTHX_ I32 oldscope)
2418 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2419 PL_sawampersand ? "Enabling" : "Omitting",
2420 (unsigned int)(PL_sawampersand)));
2422 if (!PL_restartop) {
2424 if (DEBUG_x_TEST || DEBUG_B_TEST)
2425 dump_all_perl(!DEBUG_B_TEST);
2427 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2431 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2434 if (PERLDB_SINGLE && PL_DBsingle)
2437 PERL_SET_PHASE(PERL_PHASE_INIT);
2438 call_list(oldscope, PL_initav);
2440 #ifdef PERL_DEBUG_READONLY_OPS
2441 if (PL_main_root && PL_main_root->op_slabbed)
2442 Slab_to_ro(OpSLAB(PL_main_root));
2448 PERL_SET_PHASE(PERL_PHASE_RUN);
2451 PL_restartjmpenv = NULL;
2452 PL_op = PL_restartop;
2456 else if (PL_main_start) {
2457 CvDEPTH(PL_main_cv) = 1;
2458 PL_op = PL_main_start;
2462 NOT_REACHED; /* NOTREACHED */
2466 =head1 SV Manipulation Functions
2468 =for apidoc p||get_sv
2470 Returns the SV of the specified Perl scalar. C<flags> are passed to
2471 C<gv_fetchpv>. If C<GV_ADD> is set and the
2472 Perl variable does not exist then it will be created. If C<flags> is zero
2473 and the variable does not exist then NULL is returned.
2479 Perl_get_sv(pTHX_ const char *name, I32 flags)
2483 PERL_ARGS_ASSERT_GET_SV;
2485 gv = gv_fetchpv(name, flags, SVt_PV);
2492 =head1 Array Manipulation Functions
2494 =for apidoc p||get_av
2496 Returns the AV of the specified Perl global or package array with the given
2497 name (so it won't work on lexical variables). C<flags> are passed
2498 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2499 Perl variable does not exist then it will be created. If C<flags> is zero
2500 and the variable does not exist then NULL is returned.
2502 Perl equivalent: C<@{"$name"}>.
2508 Perl_get_av(pTHX_ const char *name, I32 flags)
2510 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2512 PERL_ARGS_ASSERT_GET_AV;
2522 =head1 Hash Manipulation Functions
2524 =for apidoc p||get_hv
2526 Returns the HV of the specified Perl hash. C<flags> are passed to
2527 C<gv_fetchpv>. If C<GV_ADD> is set and the
2528 Perl variable does not exist then it will be created. If C<flags> is zero
2529 and the variable does not exist then C<NULL> is returned.
2535 Perl_get_hv(pTHX_ const char *name, I32 flags)
2537 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2539 PERL_ARGS_ASSERT_GET_HV;
2549 =head1 CV Manipulation Functions
2551 =for apidoc p||get_cvn_flags
2553 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2554 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2555 exist then it will be declared (which has the same effect as saying
2556 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2557 then NULL is returned.
2559 =for apidoc p||get_cv
2561 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2567 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2569 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2571 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2573 /* XXX this is probably not what they think they're getting.
2574 * It has the same effect as "sub name;", i.e. just a forward
2576 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2577 return newSTUB(gv,0);
2584 /* Nothing in core calls this now, but we can't replace it with a macro and
2585 move it to mathoms.c as a macro would evaluate name twice. */
2587 Perl_get_cv(pTHX_ const char *name, I32 flags)
2589 PERL_ARGS_ASSERT_GET_CV;
2591 return get_cvn_flags(name, strlen(name), flags);
2594 /* Be sure to refetch the stack pointer after calling these routines. */
2598 =head1 Callback Functions
2600 =for apidoc p||call_argv
2602 Performs a callback to the specified named and package-scoped Perl subroutine
2603 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2606 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2612 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2614 /* See G_* flags in cop.h */
2615 /* null terminated arg list */
2619 PERL_ARGS_ASSERT_CALL_ARGV;
2623 mXPUSHs(newSVpv(*argv,0));
2627 return call_pv(sub_name, flags);
2631 =for apidoc p||call_pv
2633 Performs a callback to the specified Perl sub. See L<perlcall>.
2639 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2640 /* name of the subroutine */
2641 /* See G_* flags in cop.h */
2643 PERL_ARGS_ASSERT_CALL_PV;
2645 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2649 =for apidoc p||call_method
2651 Performs a callback to the specified Perl method. The blessed object must
2652 be on the stack. See L<perlcall>.
2658 Perl_call_method(pTHX_ const char *methname, I32 flags)
2659 /* name of the subroutine */
2660 /* See G_* flags in cop.h */
2664 PERL_ARGS_ASSERT_CALL_METHOD;
2666 len = strlen(methname);
2667 sv = flags & G_METHOD_NAMED
2668 ? sv_2mortal(newSVpvn_share(methname, len,0))
2669 : newSVpvn_flags(methname, len, SVs_TEMP);
2671 return call_sv(sv, flags | G_METHOD);
2674 /* May be called with any of a CV, a GV, or an SV containing the name. */
2676 =for apidoc p||call_sv
2678 Performs a callback to the Perl sub specified by the SV.
2680 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2681 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2682 or C<SvPV(sv)> will be used as the name of the sub to call.
2684 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2685 C<SvPV(sv)> will be used as the name of the method to call.
2687 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2688 the name of the method to call.
2690 Some other values are treated specially for internal use and should
2699 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2700 /* See G_* flags in cop.h */
2703 LOGOP myop; /* fake syntax tree node */
2708 bool oldcatch = CATCH_GET;
2710 OP* const oldop = PL_op;
2713 PERL_ARGS_ASSERT_CALL_SV;
2715 if (flags & G_DISCARD) {
2719 if (!(flags & G_WANT)) {
2720 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2725 Zero(&myop, 1, LOGOP);
2726 if (!(flags & G_NOARGS))
2727 myop.op_flags |= OPf_STACKED;
2728 myop.op_flags |= OP_GIMME_REVERSE(flags);
2732 if (!(flags & G_METHOD_NAMED)) {
2739 oldscope = PL_scopestack_ix;
2741 if (PERLDB_SUB && PL_curstash != PL_debstash
2742 /* Handle first BEGIN of -d. */
2743 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2744 /* Try harder, since this may have been a sighandler, thus
2745 * curstash may be meaningless. */
2746 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2747 && !(flags & G_NODEBUG))
2748 myop.op_private |= OPpENTERSUB_DB;
2750 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2751 Zero(&method_op, 1, METHOP);
2752 method_op.op_next = (OP*)&myop;
2753 PL_op = (OP*)&method_op;
2754 if ( flags & G_METHOD_NAMED ) {
2755 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2756 method_op.op_type = OP_METHOD_NAMED;
2757 method_op.op_u.op_meth_sv = sv;
2759 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2760 method_op.op_type = OP_METHOD;
2762 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2763 myop.op_type = OP_ENTERSUB;
2766 if (!(flags & G_EVAL)) {
2768 CALL_BODY_SUB((OP*)&myop);
2769 retval = PL_stack_sp - (PL_stack_base + oldmark);
2770 CATCH_SET(oldcatch);
2773 myop.op_other = (OP*)&myop;
2775 create_eval_scope(flags|G_FAKINGEVAL);
2783 CALL_BODY_SUB((OP*)&myop);
2784 retval = PL_stack_sp - (PL_stack_base + oldmark);
2785 if (!(flags & G_KEEPERR)) {
2793 /* my_exit() was called */
2794 SET_CURSTASH(PL_defstash);
2798 NOT_REACHED; /* NOTREACHED */
2801 PL_restartjmpenv = NULL;
2802 PL_op = PL_restartop;
2806 PL_stack_sp = PL_stack_base + oldmark;
2807 if ((flags & G_WANT) == G_ARRAY)
2811 *++PL_stack_sp = &PL_sv_undef;
2816 if (PL_scopestack_ix > oldscope)
2817 delete_eval_scope();
2821 if (flags & G_DISCARD) {
2822 PL_stack_sp = PL_stack_base + oldmark;
2831 /* Eval a string. The G_EVAL flag is always assumed. */
2834 =for apidoc p||eval_sv
2836 Tells Perl to C<eval> the string in the SV. It supports the same flags
2837 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2843 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2845 /* See G_* flags in cop.h */
2848 UNOP myop; /* fake syntax tree node */
2852 OP* const oldop = PL_op;
2855 PERL_ARGS_ASSERT_EVAL_SV;
2857 if (flags & G_DISCARD) {
2864 Zero(&myop, 1, UNOP);
2867 oldmark = SP - PL_stack_base;
2873 if (!(flags & G_NOARGS))
2874 myop.op_flags = OPf_STACKED;
2875 myop.op_type = OP_ENTEREVAL;
2876 myop.op_flags |= OP_GIMME_REVERSE(flags);
2877 if (flags & G_KEEPERR)
2878 myop.op_flags |= OPf_SPECIAL;
2880 if (flags & G_RE_REPARSING)
2881 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2883 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2884 * before a PUSHEVAL, which corrupts the stack after a croak */
2885 TAINT_PROPER("eval_sv()");
2891 if (PL_op == (OP*)(&myop)) {
2892 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2894 goto fail; /* failed in compilation */
2897 retval = PL_stack_sp - (PL_stack_base + oldmark);
2898 if (!(flags & G_KEEPERR)) {
2906 /* my_exit() was called */
2907 SET_CURSTASH(PL_defstash);
2911 NOT_REACHED; /* NOTREACHED */
2914 PL_restartjmpenv = NULL;
2915 PL_op = PL_restartop;
2920 PL_stack_sp = PL_stack_base + oldmark;
2921 if ((flags & G_WANT) == G_ARRAY)
2925 *++PL_stack_sp = &PL_sv_undef;
2931 if (flags & G_DISCARD) {
2932 PL_stack_sp = PL_stack_base + oldmark;
2942 =for apidoc p||eval_pv
2944 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2950 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2952 SV* sv = newSVpv(p, 0);
2954 PERL_ARGS_ASSERT_EVAL_PV;
2956 eval_sv(sv, G_SCALAR);
2965 /* just check empty string or undef? */
2966 if (croak_on_error) {
2967 SV * const errsv = ERRSV;
2968 if(SvTRUE_NN(errsv))
2969 /* replace with croak_sv? */
2970 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2976 /* Require a module. */
2979 =head1 Embedding Functions
2981 =for apidoc p||require_pv
2983 Tells Perl to C<require> the file named by the string argument. It is
2984 analogous to the Perl code C<eval "require '$file'">. It's even
2985 implemented that way; consider using load_module instead.
2990 Perl_require_pv(pTHX_ const char *pv)
2995 PERL_ARGS_ASSERT_REQUIRE_PV;
2997 PUSHSTACKi(PERLSI_REQUIRE);
2998 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2999 eval_sv(sv_2mortal(sv), G_DISCARD);
3004 S_usage(pTHX) /* XXX move this out into a module ? */
3006 /* This message really ought to be max 23 lines.
3007 * Removed -h because the user already knows that option. Others? */
3009 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3010 minimum of 509 character string literals. */
3011 static const char * const usage_msg[] = {
3012 " -0[octal] specify record separator (\\0, if no argument)\n"
3013 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3014 " -C[number/list] enables the listed Unicode features\n"
3015 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3016 " -d[:debugger] run program under debugger\n"
3017 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3018 " -e program one line of program (several -e's allowed, omit programfile)\n"
3019 " -E program like -e, but enables all optional features\n"
3020 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3021 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3022 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3023 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3024 " -l[octal] enable line ending processing, specifies line terminator\n"
3025 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3026 " -n assume \"while (<>) { ... }\" loop around program\n"
3027 " -p assume loop like -n but print line also, like sed\n"
3028 " -s enable rudimentary parsing for switches after programfile\n"
3029 " -S look for programfile using PATH environment variable\n",
3030 " -t enable tainting warnings\n"
3031 " -T enable tainting checks\n"
3032 " -u dump core after parsing program\n"
3033 " -U allow unsafe operations\n"
3034 " -v print version, patchlevel and license\n"
3035 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3036 " -w enable many useful warnings\n"
3037 " -W enable all warnings\n"
3038 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3039 " -X disable all warnings\n"
3041 "Run 'perldoc perl' for more help with Perl.\n\n",
3044 const char * const *p = usage_msg;
3045 PerlIO *out = PerlIO_stdout();
3048 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3051 PerlIO_puts(out, *p++);
3055 /* convert a string of -D options (or digits) into an int.
3056 * sets *s to point to the char after the options */
3060 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3062 static const char * const usage_msgd[] = {
3063 " Debugging flag values: (see also -d)\n"
3064 " p Tokenizing and parsing (with v, displays parse stack)\n"
3065 " s Stack snapshots (with v, displays all stacks)\n"
3066 " l Context (loop) stack processing\n"
3067 " t Trace execution\n"
3068 " o Method and overloading resolution\n",
3069 " c String/numeric conversions\n"
3070 " P Print profiling info, source file input state\n"
3071 " m Memory and SV allocation\n"
3072 " f Format processing\n"
3073 " r Regular expression parsing and execution\n"
3074 " x Syntax tree dump\n",
3075 " u Tainting checks\n"
3076 " H Hash dump -- usurps values()\n"
3077 " X Scratchpad allocation\n"
3079 " S Op slab allocation\n"
3081 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3082 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3083 " v Verbose: use in conjunction with other flags\n"
3084 " C Copy On Write\n"
3085 " A Consistency checks on internal structures\n"
3086 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3087 " M trace smart match resolution\n"
3088 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3089 " L trace some locale setting information--for Perl core development\n",
3094 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3097 /* if adding extra options, remember to update DEBUG_MASK */
3098 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3100 for (; isWORDCHAR(**s); (*s)++) {
3101 const char * const d = strchr(debopts,**s);
3103 uv |= 1 << (d - debopts);
3104 else if (ckWARN_d(WARN_DEBUGGING))
3105 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3106 "invalid option -D%c, use -D'' to see choices\n", **s);
3109 else if (isDIGIT(**s)) {
3111 if (grok_atoUV(*s, &uv, &e))
3113 for (; isWORDCHAR(**s); (*s)++) ;
3115 else if (givehelp) {
3116 const char *const *p = usage_msgd;
3117 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3119 return (int)uv; /* ignore any UV->int conversion loss */
3123 /* This routine handles any switches that can be given during run */
3126 Perl_moreswitches(pTHX_ const char *s)
3130 const char option = *s; /* used to remember option in -m/-M code */
3132 PERL_ARGS_ASSERT_MORESWITCHES;
3140 SvREFCNT_dec(PL_rs);
3141 if (s[1] == 'x' && s[2]) {
3142 const char *e = s+=2;
3148 flags = PERL_SCAN_SILENT_ILLDIGIT;
3149 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3150 if (s + numlen < e) {
3151 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3155 PL_rs = newSVpvs("");
3156 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3157 tmps = (U8*)SvPVX(PL_rs);
3158 uvchr_to_utf8(tmps, rschar);
3159 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3164 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3165 if (rschar & ~((U8)~0))
3166 PL_rs = &PL_sv_undef;
3167 else if (!rschar && numlen >= 2)
3168 PL_rs = newSVpvs("");
3170 char ch = (char)rschar;
3171 PL_rs = newSVpvn(&ch, 1);
3174 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3179 PL_unicode = parse_unicode_opts( (const char **)&s );
3180 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3188 while (*s && !isSPACE(*s)) ++s;
3189 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3201 forbid_setid('d', FALSE);
3204 /* -dt indicates to the debugger that threads will be used */
3205 if (*s == 't' && !isWORDCHAR(s[1])) {
3207 my_setenv("PERL5DB_THREADED", "1");
3210 /* The following permits -d:Mod to accepts arguments following an =
3211 in the fashion that -MSome::Mod does. */
3212 if (*s == ':' || *s == '=') {
3219 sv = newSVpvs("no Devel::");
3221 sv = newSVpvs("use Devel::");
3225 end = s + strlen(s);
3227 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3228 while(isWORDCHAR(*s) || *s==':') ++s;
3230 sv_catpvn(sv, start, end - start);
3232 sv_catpvn(sv, start, s-start);
3233 /* Don't use NUL as q// delimiter here, this string goes in the
3235 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3238 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3242 PL_perldb = PERLDB_ALL;
3249 forbid_setid('D', FALSE);
3251 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3252 #else /* !DEBUGGING */
3253 if (ckWARN_d(WARN_DEBUGGING))
3254 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3255 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3256 for (s++; isWORDCHAR(*s); s++) ;
3259 NOT_REACHED; /* NOTREACHED */
3263 NOT_REACHED; /* NOTREACHED */
3266 Safefree(PL_inplace);
3267 #if defined(__CYGWIN__) /* do backup extension automagically */
3268 if (*(s+1) == '\0') {
3269 PL_inplace = savepvs(".bak");
3272 #endif /* __CYGWIN__ */
3274 const char * const start = ++s;
3275 while (*s && !isSPACE(*s))
3278 PL_inplace = savepvn(start, s - start);
3282 if (*s == '-') /* Additional switches on #! line. */
3286 case 'I': /* -I handled both here and in parse_body() */
3287 forbid_setid('I', FALSE);
3289 while (*s && isSPACE(*s))
3294 /* ignore trailing spaces (possibly followed by other switches) */
3296 for (e = p; *e && !isSPACE(*e); e++) ;
3300 } while (*p && *p != '-');
3302 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3308 Perl_croak(aTHX_ "No directory specified for -I");
3314 SvREFCNT_dec(PL_ors_sv);
3320 PL_ors_sv = newSVpvs("\n");
3321 numlen = 3 + (*s == '0');
3322 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3326 if (RsPARA(PL_rs)) {
3327 PL_ors_sv = newSVpvs("\n\n");
3330 PL_ors_sv = newSVsv(PL_rs);
3335 forbid_setid('M', FALSE); /* XXX ? */
3338 forbid_setid('m', FALSE); /* XXX ? */
3343 const char *use = "use ";
3345 /* -M-foo == 'no foo' */
3346 /* Leading space on " no " is deliberate, to make both
3347 possibilities the same length. */
3348 if (*s == '-') { use = " no "; ++s; }
3349 sv = newSVpvn(use,4);
3351 /* We allow -M'Module qw(Foo Bar)' */
3352 while(isWORDCHAR(*s) || *s==':') {
3361 Perl_croak(aTHX_ "Module name required with -%c option",
3364 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3365 "contains single ':'",
3366 (int)(s - start), start, option);
3367 end = s + strlen(s);
3369 sv_catpvn(sv, start, end - start);
3370 if (option == 'm') {
3372 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3373 sv_catpvs( sv, " ()");
3376 sv_catpvn(sv, start, s-start);
3377 /* Use NUL as q''-delimiter. */
3378 sv_catpvs(sv, " split(/,/,q\0");
3380 sv_catpvn(sv, s, end - s);
3381 sv_catpvs(sv, "\0)");
3384 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3387 Perl_croak(aTHX_ "Missing argument to -%c", option);
3398 forbid_setid('s', FALSE);
3399 PL_doswitches = TRUE;
3404 #if defined(SILENT_NO_TAINT_SUPPORT)
3405 /* silently ignore */
3406 #elif defined(NO_TAINT_SUPPORT)
3407 Perl_croak_nocontext("This perl was compiled without taint support. "
3408 "Cowardly refusing to run with -t or -T flags");
3416 PL_do_undump = TRUE;
3426 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3427 PL_dowarn |= G_WARN_ON;
3432 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3433 if (!specialWARN(PL_compiling.cop_warnings))
3434 PerlMemShared_free(PL_compiling.cop_warnings);
3435 PL_compiling.cop_warnings = pWARN_ALL ;
3439 PL_dowarn = G_WARN_ALL_OFF;
3440 if (!specialWARN(PL_compiling.cop_warnings))
3441 PerlMemShared_free(PL_compiling.cop_warnings);
3442 PL_compiling.cop_warnings = pWARN_NONE ;
3449 if (s[0] == '-') /* Additional switches on #! line. */
3454 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3460 #ifdef ALTERNATE_SHEBANG
3461 case 'S': /* OS/2 needs -S on "extproc" line. */
3464 case 'e': case 'f': case 'x': case 'E':
3465 #ifndef ALTERNATE_SHEBANG
3469 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3472 "Unrecognized switch: -%.1s (-h will show valid options)",s
3482 PerlIO * PIO_stdout;
3484 const char * const level_str = "v" PERL_VERSION_STRING;
3485 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3486 #ifdef PERL_PATCHNUM
3488 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3489 static const char num [] = PERL_PATCHNUM "*";
3491 static const char num [] = PERL_PATCHNUM;
3494 const STRLEN num_len = sizeof(num)-1;
3495 /* A very advanced compiler would fold away the strnEQ
3496 and this whole conditional, but most (all?) won't do it.
3497 SV level could also be replaced by with preprocessor
3500 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3501 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3502 of the interp so it might contain format characters
3504 level = newSVpvn(num, num_len);
3506 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3510 SV* level = newSVpvn(level_str, level_len);
3511 #endif /* #ifdef PERL_PATCHNUM */
3512 PIO_stdout = PerlIO_stdout();
3513 PerlIO_printf(PIO_stdout,
3514 "\nThis is perl " STRINGIFY(PERL_REVISION)
3515 ", version " STRINGIFY(PERL_VERSION)
3516 ", subversion " STRINGIFY(PERL_SUBVERSION)
3517 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3519 SvREFCNT_dec_NN(level);
3521 #if defined(LOCAL_PATCH_COUNT)
3522 if (LOCAL_PATCH_COUNT > 0)
3523 PerlIO_printf(PIO_stdout,
3524 "\n(with %d registered patch%s, "
3525 "see perl -V for more detail)",
3527 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3530 PerlIO_printf(PIO_stdout,
3531 "\n\nCopyright 1987-2015, Larry Wall\n");
3533 PerlIO_printf(PIO_stdout,
3534 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3537 PerlIO_printf(PIO_stdout,
3538 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3539 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3542 PerlIO_printf(PIO_stdout,
3543 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3544 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3547 PerlIO_printf(PIO_stdout,
3548 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3551 PerlIO_printf(PIO_stdout,
3552 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3555 PerlIO_printf(PIO_stdout,
3556 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3559 PerlIO_printf(PIO_stdout,
3560 "WINCE port by Rainer Keuchel, 2001-2002\n"
3561 "Built on " __DATE__ " " __TIME__ "\n\n");
3564 #ifdef __SYMBIAN32__
3565 PerlIO_printf(PIO_stdout,
3566 "Symbian port by Nokia, 2004-2005\n");
3568 #ifdef BINARY_BUILD_NOTICE
3569 BINARY_BUILD_NOTICE;
3571 PerlIO_printf(PIO_stdout,
3573 Perl may be copied only under the terms of either the Artistic License or the\n\
3574 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3575 Complete documentation for Perl, including FAQ lists, should be found on\n\
3576 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3577 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3581 /* compliments of Tom Christiansen */
3583 /* unexec() can be found in the Gnu emacs distribution */
3584 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3587 #include <lib$routines.h>
3591 Perl_my_unexec(pTHX)
3594 SV * prog = newSVpv(BIN_EXP, 0);
3595 SV * file = newSVpv(PL_origfilename, 0);
3599 sv_catpvs(prog, "/perl");
3600 sv_catpvs(file, ".perldump");
3602 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3603 /* unexec prints msg to stderr in case of failure */
3604 PerlProc_exit(status);
3606 PERL_UNUSED_CONTEXT;
3608 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3609 # elif defined(WIN32) || defined(__CYGWIN__)
3610 Perl_croak_nocontext("dump is not supported");
3612 ABORT(); /* for use with undump */
3617 /* initialize curinterp */
3622 # define PERLVAR(prefix,var,type)
3623 # define PERLVARA(prefix,var,n,type)
3624 # if defined(PERL_IMPLICIT_CONTEXT)
3625 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3626 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3628 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3629 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3631 # include "intrpvar.h"
3637 # define PERLVAR(prefix,var,type)
3638 # define PERLVARA(prefix,var,n,type)
3639 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3640 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3641 # include "intrpvar.h"
3651 S_init_main_stash(pTHX)
3655 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3656 /* We know that the string "main" will be in the global shared string
3657 table, so it's a small saving to use it rather than allocate another
3659 PL_curstname = newSVpvs_share("main");
3660 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3661 /* If we hadn't caused another reference to "main" to be in the shared
3662 string table above, then it would be worth reordering these two,
3663 because otherwise all we do is delete "main" from it as a consequence
3664 of the SvREFCNT_dec, only to add it again with hv_name_set */
3665 SvREFCNT_dec(GvHV(gv));
3666 hv_name_set(PL_defstash, "main", 4, 0);
3667 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3669 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3671 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3672 GvMULTI_on(PL_incgv);
3673 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3674 SvREFCNT_inc_simple_void(PL_hintgv);
3675 GvMULTI_on(PL_hintgv);
3676 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3677 SvREFCNT_inc_simple_void(PL_defgv);
3678 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3679 SvREFCNT_inc_simple_void(PL_errgv);
3680 GvMULTI_on(PL_errgv);
3681 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3682 SvREFCNT_inc_simple_void(PL_replgv);
3683 GvMULTI_on(PL_replgv);
3684 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3685 #ifdef PERL_DONT_CREATE_GVSV
3686 (void)gv_SVadd(PL_errgv);
3688 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3690 SET_CURSTASH(PL_defstash);
3691 CopSTASH_set(&PL_compiling, PL_defstash);
3692 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3693 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3695 /* We must init $/ before switches are processed. */
3696 sv_setpvs(get_sv("/", GV_ADD), "\n");
3700 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3703 PerlIO *rsfp = NULL;
3707 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3710 PL_origfilename = savepvs("-e");
3715 /* if find_script() returns, it returns a malloc()-ed value */
3716 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3718 if (strnEQ(scriptname, "/dev/fd/", 8)
3719 && isDIGIT(scriptname[8])
3720 && grok_atoUV(scriptname + 8, &uv, &s)
3721 && uv <= PERL_INT_MAX
3726 * Tell apart "normal" usage of fdscript, e.g.
3727 * with bash on FreeBSD:
3728 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3729 * from usage in suidperl.
3730 * Does any "normal" usage leave garbage after the number???
3731 * Is it a mistake to use a similar /dev/fd/ construct for
3736 * Be supersafe and do some sanity-checks.
3737 * Still, can we be sure we got the right thing?
3740 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3743 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3745 scriptname = savepv(s + 1);
3746 Safefree(PL_origfilename);
3747 PL_origfilename = (char *)scriptname;
3752 CopFILE_free(PL_curcop);
3753 CopFILE_set(PL_curcop, PL_origfilename);
3754 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3755 scriptname = (char *)"";
3756 if (fdscript >= 0) {
3757 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3759 else if (!*scriptname) {
3760 forbid_setid(0, *suidscript);
3764 #ifdef FAKE_BIT_BUCKET
3765 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3766 * is called) and still have the "-e" work. (Believe it or not,
3767 * a /dev/null is required for the "-e" to work because source
3768 * filter magic is used to implement it. ) This is *not* a general
3769 * replacement for a /dev/null. What we do here is create a temp
3770 * file (an empty file), open up that as the script, and then
3771 * immediately close and unlink it. Close enough for jazz. */
3772 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3773 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3774 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3775 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3776 FAKE_BIT_BUCKET_TEMPLATE
3778 const char * const err = "Failed to create a fake bit bucket";
3779 if (strEQ(scriptname, BIT_BUCKET)) {
3780 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3781 int old_umask = umask(0600);
3782 int tmpfd = mkstemp(tmpname);
3785 scriptname = tmpname;
3788 Perl_croak(aTHX_ err);
3791 scriptname = mktemp(tmpname);
3793 Perl_croak(aTHX_ err);
3798 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3799 #ifdef FAKE_BIT_BUCKET
3800 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3801 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3802 && strlen(scriptname) == sizeof(tmpname) - 1) {
3805 scriptname = BIT_BUCKET;
3809 /* PSz 16 Sep 03 Keep neat error message */
3811 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3813 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3814 CopFILE(PL_curcop), Strerror(errno));
3816 fd = PerlIO_fileno(rsfp);
3817 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3819 /* ensure close-on-exec */
3820 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3821 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3822 CopFILE(PL_curcop), Strerror(errno));
3828 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3829 && S_ISDIR(tmpstatbuf.st_mode)))
3830 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3837 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3838 /* Don't even need this function. */
3841 S_validate_suid(pTHX_ PerlIO *rsfp)
3843 const Uid_t my_uid = PerlProc_getuid();
3844 const Uid_t my_euid = PerlProc_geteuid();
3845 const Gid_t my_gid = PerlProc_getgid();
3846 const Gid_t my_egid = PerlProc_getegid();
3848 PERL_ARGS_ASSERT_VALIDATE_SUID;
3850 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3852 int fd = PerlIO_fileno(rsfp);
3854 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3855 Perl_croak_nocontext( "Illegal suidscript");
3857 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3859 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3862 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3863 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3864 /* not set-id, must be wrapped */
3867 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3870 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3875 PERL_ARGS_ASSERT_FIND_BEGINNING;
3877 /* skip forward in input to the real script? */
3880 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3881 Perl_croak(aTHX_ "No Perl script found in input\n");
3883 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3884 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3885 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3887 while (*s == ' ' || *s == '\t') s++;
3889 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3890 || s2[-1] == '_') s2--;
3891 if (strnEQ(s2-4,"perl",4))
3892 while ((s = moreswitches(s)))
3901 /* no need to do anything here any more if we don't
3903 #ifndef NO_TAINT_SUPPORT
3904 const Uid_t my_uid = PerlProc_getuid();
3905 const Uid_t my_euid = PerlProc_geteuid();
3906 const Gid_t my_gid = PerlProc_getgid();
3907 const Gid_t my_egid = PerlProc_getegid();
3909 PERL_UNUSED_CONTEXT;
3911 /* Should not happen: */
3912 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3913 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3917 * Should go by suidscript, not uid!=euid: why disallow
3918 * system("ls") in scripts run from setuid things?
3919 * Or, is this run before we check arguments and set suidscript?
3920 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3921 * (We never have suidscript, can we be sure to have fdscript?)
3922 * Or must then go by UID checks? See comments in forbid_setid also.
3926 /* This is used very early in the lifetime of the program,
3927 * before even the options are parsed, so PL_tainting has
3928 * not been initialized properly. */
3930 Perl_doing_taint(int argc, char *argv[], char *envp[])
3932 #ifndef PERL_IMPLICIT_SYS
3933 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3934 * before we have an interpreter-- and the whole point of this
3935 * function is to be called at such an early stage. If you are on
3936 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3937 * "tainted because running with altered effective ids', you'll
3938 * have to add your own checks somewhere in here. The two most
3939 * known samples of 'implicitness' are Win32 and NetWare, neither
3940 * of which has much of concept of 'uids'. */
3941 Uid_t uid = PerlProc_getuid();
3942 Uid_t euid = PerlProc_geteuid();
3943 Gid_t gid = PerlProc_getgid();
3944 Gid_t egid = PerlProc_getegid();
3951 if (uid && (euid != uid || egid != gid))
3953 #endif /* !PERL_IMPLICIT_SYS */
3954 /* This is a really primitive check; environment gets ignored only
3955 * if -T are the first chars together; otherwise one gets
3956 * "Too late" message. */
3957 if ( argc > 1 && argv[1][0] == '-'
3958 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3963 /* Passing the flag as a single char rather than a string is a slight space
3964 optimisation. The only message that isn't /^-.$/ is
3965 "program input from stdin", which is substituted in place of '\0', which
3966 could never be a command line flag. */
3968 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3970 char string[3] = "-x";
3971 const char *message = "program input from stdin";
3973 PERL_UNUSED_CONTEXT;
3979 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3980 if (PerlProc_getuid() != PerlProc_geteuid())
3981 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3982 if (PerlProc_getgid() != PerlProc_getegid())
3983 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3984 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3986 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3990 Perl_init_dbargs(pTHX)
3992 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3997 /* Someone has already created it.
3998 It might have entries, and if we just turn off AvREAL(), they will
3999 "leak" until global destruction. */
4001 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4002 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4004 AvREIFY_only(PL_dbargs);
4008 Perl_init_debugger(pTHX)
4010 HV * const ostash = PL_curstash;
4013 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4015 Perl_init_dbargs(aTHX);
4016 PL_DBgv = MUTABLE_GV(
4017 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4019 PL_DBline = MUTABLE_GV(
4020 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4022 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4023 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4025 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4026 if (!SvIOK(PL_DBsingle))
4027 sv_setiv(PL_DBsingle, 0);
4028 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4029 mg->mg_private = DBVARMG_SINGLE;
4030 SvSETMAGIC(PL_DBsingle);
4032 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4033 if (!SvIOK(PL_DBtrace))
4034 sv_setiv(PL_DBtrace, 0);
4035 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4036 mg->mg_private = DBVARMG_TRACE;
4037 SvSETMAGIC(PL_DBtrace);
4039 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4040 if (!SvIOK(PL_DBsignal))
4041 sv_setiv(PL_DBsignal, 0);
4042 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4043 mg->mg_private = DBVARMG_SIGNAL;
4044 SvSETMAGIC(PL_DBsignal);
4046 SvREFCNT_dec(PL_curstash);
4047 PL_curstash = ostash;
4050 #ifndef STRESS_REALLOC
4051 #define REASONABLE(size) (size)
4052 #define REASONABLE_but_at_least(size,min) (size)
4054 #define REASONABLE(size) (1) /* unreasonable */
4055 #define REASONABLE_but_at_least(size,min) (min)
4059 Perl_init_stacks(pTHX)
4061 /* start with 128-item stack and 8K cxstack */
4062 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4063 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4064 PL_curstackinfo->si_type = PERLSI_MAIN;
4065 PL_curstack = PL_curstackinfo->si_stack;
4066 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4068 PL_stack_base = AvARRAY(PL_curstack);
4069 PL_stack_sp = PL_stack_base;
4070 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4072 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4075 PL_tmps_max = REASONABLE(128);
4077 Newx(PL_markstack,REASONABLE(32),I32);
4078 PL_markstack_ptr = PL_markstack;
4079 PL_markstack_max = PL_markstack + REASONABLE(32);
4083 Newx(PL_scopestack,REASONABLE(32),I32);
4085 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4087 PL_scopestack_ix = 0;
4088 PL_scopestack_max = REASONABLE(32);
4090 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4091 PL_savestack_ix = 0;
4092 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4100 while (PL_curstackinfo->si_next)
4101 PL_curstackinfo = PL_curstackinfo->si_next;
4102 while (PL_curstackinfo) {
4103 PERL_SI *p = PL_curstackinfo->si_prev;
4104 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4105 Safefree(PL_curstackinfo->si_cxstack);
4106 Safefree(PL_curstackinfo);
4107 PL_curstackinfo = p;
4109 Safefree(PL_tmps_stack);
4110 Safefree(PL_markstack);
4111 Safefree(PL_scopestack);
4113 Safefree(PL_scopestack_name);
4115 Safefree(PL_savestack);
4119 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4121 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4122 AV *const isa = GvAVn(gv);
4125 PERL_ARGS_ASSERT_POPULATE_ISA;
4127 if(AvFILLp(isa) != -1)
4130 /* NOTE: No support for tied ISA */
4132 va_start(args, len);
4134 const char *const parent = va_arg(args, const char*);
4139 parent_len = va_arg(args, size_t);
4141 /* Arguments are supplied with a trailing :: */
4142 assert(parent_len > 2);
4143 assert(parent[parent_len - 1] == ':');
4144 assert(parent[parent_len - 2] == ':');
4145 av_push(isa, newSVpvn(parent, parent_len - 2));
4146 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4153 S_init_predump_symbols(pTHX)
4158 sv_setpvs(get_sv("\"", GV_ADD), " ");
4159 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4162 /* Historically, PVIOs were blessed into IO::Handle, unless
4163 FileHandle was loaded, in which case they were blessed into
4164 that. Action at a distance.
4165 However, if we simply bless into IO::Handle, we break code
4166 that assumes that PVIOs will have (among others) a seek
4167 method. IO::File inherits from IO::Handle and IO::Seekable,
4168 and provides the needed methods. But if we simply bless into
4169 it, then we break code that assumed that by loading
4170 IO::Handle, *it* would work.
4171 So a compromise is to set up the correct @IO::File::ISA,
4172 so that code that does C<use IO::Handle>; will still work.
4175 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4176 STR_WITH_LEN("IO::Handle::"),
4177 STR_WITH_LEN("IO::Seekable::"),
4178 STR_WITH_LEN("Exporter::"),
4181 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4182 GvMULTI_on(PL_stdingv);
4183 io = GvIOp(PL_stdingv);
4184 IoTYPE(io) = IoTYPE_RDONLY;
4185 IoIFP(io) = PerlIO_stdin();
4186 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4188 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4190 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4193 IoTYPE(io) = IoTYPE_WRONLY;
4194 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4196 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4198 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4200 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4201 GvMULTI_on(PL_stderrgv);
4202 io = GvIOp(PL_stderrgv);
4203 IoTYPE(io) = IoTYPE_WRONLY;
4204 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4205 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4207 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4209 PL_statname = newSVpvs(""); /* last filename we did stat on */
4213 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4215 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4217 argc--,argv++; /* skip name of script */
4218 if (PL_doswitches) {
4219 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4223 if (argv[0][1] == '-' && !argv[0][2]) {
4227 if ((s = strchr(argv[0], '='))) {
4228 const char *const start_name = argv[0] + 1;
4229 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4230 TRUE, SVt_PV)), s + 1);
4233 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4236 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4237 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4238 GvMULTI_on(PL_argvgv);
4239 av_clear(GvAVn(PL_argvgv));
4240 for (; argc > 0; argc--,argv++) {
4241 SV * const sv = newSVpv(argv[0],0);
4242 av_push(GvAV(PL_argvgv),sv);
4243 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4244 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4247 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4248 (void)sv_utf8_decode(sv);
4252 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4253 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4254 "-i used with no filenames on the command line, "
4255 "reading from STDIN");
4259 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4266 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4268 PL_toptarget = newSV_type(SVt_PVIV);
4269 sv_setpvs(PL_toptarget, "");
4270 PL_bodytarget = newSV_type(SVt_PVIV);
4271 sv_setpvs(PL_bodytarget, "");
4272 PL_formtarget = PL_bodytarget;
4276 init_argv_symbols(argc,argv);
4278 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4279 sv_setpv(GvSV(tmpgv),PL_origfilename);
4281 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4283 bool env_is_not_environ;
4284 SvREFCNT_inc_simple_void_NN(PL_envgv);
4285 GvMULTI_on(PL_envgv);
4286 hv = GvHVn(PL_envgv);
4287 hv_magic(hv, NULL, PERL_MAGIC_env);
4289 #ifdef USE_ENVIRON_ARRAY
4290 /* Note that if the supplied env parameter is actually a copy
4291 of the global environ then it may now point to free'd memory
4292 if the environment has been modified since. To avoid this
4293 problem we treat env==NULL as meaning 'use the default'
4297 env_is_not_environ = env != environ;
4298 if (env_is_not_environ
4299 # ifdef USE_ITHREADS
4300 && PL_curinterp == aTHX
4309 for (; *env; env++) {
4312 if (!(s = strchr(old_var,'=')) || s == old_var)
4315 #if defined(MSDOS) && !defined(DJGPP)
4317 (void)strupr(old_var);
4320 sv = newSVpv(s+1, 0);
4321 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4322 if (env_is_not_environ)
4326 #endif /* USE_ENVIRON_ARRAY */
4327 #endif /* !PERL_MICRO */
4331 /* touch @F array to prevent spurious warnings 20020415 MJD */
4333 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4338 S_init_perllib(pTHX)
4341 const char *perl5lib = NULL;
4344 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4348 if (!TAINTING_get) {
4350 perl5lib = PerlEnv_getenv("PERL5LIB");
4352 * It isn't possible to delete an environment variable with
4353 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4354 * case we treat PERL5LIB as undefined if it has a zero-length value.
4356 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4357 if (perl5lib && *perl5lib != '\0')
4361 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4363 s = PerlEnv_getenv("PERLLIB");
4365 incpush_use_sep(s, 0, 0);
4368 /* Treat PERL5?LIB as a possible search list logical name -- the
4369 * "natural" VMS idiom for a Unix path string. We allow each
4370 * element to be a set of |-separated directories for compatibility.
4374 if (my_trnlnm("PERL5LIB",buf,0))
4376 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4377 } while (my_trnlnm("PERL5LIB",buf,++idx));
4379 while (my_trnlnm("PERLLIB",buf,idx++))
4380 incpush_use_sep(buf, 0, 0);
4385 #ifndef PERL_IS_MINIPERL
4386 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4387 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4389 /* Use the ~-expanded versions of APPLLIB (undocumented),
4390 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4393 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4394 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4398 /* sitearch is always relative to sitelib on Windows for
4399 * DLL-based path intuition to work correctly */
4400 # if !defined(WIN32)
4401 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4402 INCPUSH_CAN_RELOCATE);
4408 /* this picks up sitearch as well */
4409 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4411 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4413 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4417 #ifdef PERL_VENDORARCH_EXP
4418 /* vendorarch is always relative to vendorlib on Windows for
4419 * DLL-based path intuition to work correctly */
4420 # if !defined(WIN32)
4421 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4422 INCPUSH_CAN_RELOCATE);
4426 #ifdef PERL_VENDORLIB_EXP
4428 /* this picks up vendorarch as well */
4429 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4431 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4433 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4434 INCPUSH_CAN_RELOCATE);
4439 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4443 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4447 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4449 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4452 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4454 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4458 #ifdef PERL_OTHERLIBDIRS
4459 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4460 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4461 |INCPUSH_CAN_RELOCATE);
4464 if (!TAINTING_get) {
4467 * It isn't possible to delete an environment variable with
4468 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4469 * case we treat PERL5LIB as undefined if it has a zero-length value.
4471 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4472 if (perl5lib && *perl5lib != '\0')
4476 incpush_use_sep(perl5lib, 0,
4477 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4479 /* Treat PERL5?LIB as a possible search list logical name -- the
4480 * "natural" VMS idiom for a Unix path string. We allow each
4481 * element to be a set of |-separated directories for compatibility.
4485 if (my_trnlnm("PERL5LIB",buf,0))
4487 incpush_use_sep(buf, 0,
4488 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4489 } while (my_trnlnm("PERL5LIB",buf,++idx));
4493 /* Use the ~-expanded versions of APPLLIB (undocumented),
4494 SITELIB and VENDORLIB for older versions
4497 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4498 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4501 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4502 /* Search for version-specific dirs below here */
4503 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4504 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4508 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4509 /* Search for version-specific dirs below here */
4510 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4511 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4514 #ifdef PERL_OTHERLIBDIRS
4515 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4516 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4517 |INCPUSH_CAN_RELOCATE);
4519 #endif /* !PERL_IS_MINIPERL */
4522 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4525 #if defined(DOSISH) || defined(__SYMBIAN32__)
4526 # define PERLLIB_SEP ';'
4529 # define PERLLIB_SEP '|'
4531 # define PERLLIB_SEP ':'
4534 #ifndef PERLLIB_MANGLE
4535 # define PERLLIB_MANGLE(s,n) (s)
4538 #ifndef PERL_IS_MINIPERL
4539 /* Push a directory onto @INC if it exists.
4540 Generate a new SV if we do this, to save needing to copy the SV we push
4543 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4547 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4549 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4550 S_ISDIR(tmpstatbuf.st_mode)) {
4552 dir = newSVsv(stem);
4554 /* Truncate dir back to stem. */
4555 SvCUR_set(dir, SvCUR(stem));
4562 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4564 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4567 PERL_ARGS_ASSERT_MAYBERELOCATE;
4570 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4571 defined to so something (in os2/os2.c), but the code has been
4572 this way, ignoring any possible changed of length, since
4573 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4575 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4581 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4583 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4584 sv_usepvn(libdir,unix,len);
4587 PerlIO_printf(Perl_error_log,
4588 "Failed to unixify @INC element \"%s\"\n",
4589 SvPV_nolen_const(libdir));
4593 /* Do the if() outside the #ifdef to avoid warnings about an unused
4596 #ifdef PERL_RELOCATABLE_INC
4598 * Relocatable include entries are marked with a leading .../
4601 * 0: Remove that leading ".../"
4602 * 1: Remove trailing executable name (anything after the last '/')
4603 * from the perl path to give a perl prefix
4605 * While the @INC element starts "../" and the prefix ends with a real
4606 * directory (ie not . or ..) chop that real directory off the prefix
4607 * and the leading "../" from the @INC element. ie a logical "../"
4609 * Finally concatenate the prefix and the remainder of the @INC element
4610 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4611 * generates /usr/local/lib/perl5
4613 const char *libpath = SvPVX(libdir);
4614 STRLEN libpath_len = SvCUR(libdir);
4615 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4617 SV * const caret_X = get_sv("\030", 0);
4618 /* Going to use the SV just as a scratch buffer holding a C
4624 /* $^X is *the* source of taint if tainting is on, hence
4625 SvPOK() won't be true. */
4627 assert(SvPOKp(caret_X));
4628 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4630 /* Firstly take off the leading .../
4631 If all else fail we'll do the paths relative to the current
4633 sv_chop(libdir, libpath + 4);
4634 /* Don't use SvPV as we're intentionally bypassing taining,
4635 mortal copies that the mg_get of tainting creates, and
4636 corruption that seems to come via the save stack.
4637 I guess that the save stack isn't correctly set up yet. */
4638 libpath = SvPVX(libdir);
4639 libpath_len = SvCUR(libdir);
4641 /* This would work more efficiently with memrchr, but as it's
4642 only a GNU extension we'd need to probe for it and
4643 implement our own. Not hard, but maybe not worth it? */
4645 prefix = SvPVX(prefix_sv);
4646 lastslash = strrchr(prefix, '/');
4648 /* First time in with the *lastslash = '\0' we just wipe off
4649 the trailing /perl from (say) /usr/foo/bin/perl
4653 while ((*lastslash = '\0'), /* Do that, come what may. */
4654 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4655 && (lastslash = strrchr(prefix, '/')))) {
4656 if (lastslash[1] == '\0'
4657 || (lastslash[1] == '.'
4658 && (lastslash[2] == '/' /* ends "/." */
4659 || (lastslash[2] == '/'
4660 && lastslash[3] == '/' /* or "/.." */
4662 /* Prefix ends "/" or "/." or "/..", any of which
4663 are fishy, so don't do any more logical cleanup.
4667 /* Remove leading "../" from path */
4670 /* Next iteration round the loop removes the last
4671 directory name from prefix by writing a '\0' in
4672 the while clause. */
4674 /* prefix has been terminated with a '\0' to the correct
4675 length. libpath points somewhere into the libdir SV.
4676 We need to join the 2 with '/' and drop the result into
4678 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4679 SvREFCNT_dec(libdir);
4680 /* And this is the new libdir. */
4683 (PerlProc_getuid() != PerlProc_geteuid() ||
4684 PerlProc_getgid() != PerlProc_getegid())) {
4685 /* Need to taint relocated paths if running set ID */
4686 SvTAINTED_on(libdir);
4689 SvREFCNT_dec(prefix_sv);
4697 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4699 #ifndef PERL_IS_MINIPERL
4700 const U8 using_sub_dirs
4701 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4702 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4703 const U8 add_versioned_sub_dirs
4704 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4705 const U8 add_archonly_sub_dirs
4706 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4707 #ifdef PERL_INC_VERSION_LIST
4708 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4711 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4712 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4713 AV *const inc = GvAVn(PL_incgv);
4715 PERL_ARGS_ASSERT_INCPUSH;
4718 /* Could remove this vestigial extra block, if we don't mind a lot of
4719 re-indenting diff noise. */
4721 SV *const libdir = mayberelocate(dir, len, flags);
4722 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4723 arranged to unshift #! line -I onto the front of @INC. However,
4724 -I can add version and architecture specific libraries, and they
4725 need to go first. The old code assumed that it was always
4726 pushing. Hence to make it work, need to push the architecture
4727 (etc) libraries onto a temporary array, then "unshift" that onto
4728 the front of @INC. */
4729 #ifndef PERL_IS_MINIPERL
4730 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4733 * BEFORE pushing libdir onto @INC we may first push version- and
4734 * archname-specific sub-directories.
4736 if (using_sub_dirs) {
4737 SV *subdir = newSVsv(libdir);
4738 #ifdef PERL_INC_VERSION_LIST
4739 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4740 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4741 const char * const *incver;
4744 if (add_versioned_sub_dirs) {
4745 /* .../version/archname if -d .../version/archname */
4746 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4747 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4749 /* .../version if -d .../version */
4750 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4751 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4754 #ifdef PERL_INC_VERSION_LIST
4756 for (incver = incverlist; *incver; incver++) {
4757 /* .../xxx if -d .../xxx */
4758 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4759 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4764 if (add_archonly_sub_dirs) {
4765 /* .../archname if -d .../archname */
4766 sv_catpvs(subdir, "/" ARCHNAME);
4767 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4771 assert (SvREFCNT(subdir) == 1);
4772 SvREFCNT_dec(subdir);
4774 #endif /* !PERL_IS_MINIPERL */
4775 /* finally add this lib directory at the end of @INC */
4777 #ifdef PERL_IS_MINIPERL
4778 const Size_t extra = 0;
4780 Size_t extra = av_tindex(av) + 1;
4782 av_unshift(inc, extra + push_basedir);
4784 av_store(inc, extra, libdir);
4785 #ifndef PERL_IS_MINIPERL
4787 /* av owns a reference, av_store() expects to be donated a
4788 reference, and av expects to be sane when it's cleared.
4789 If I wanted to be naughty and wrong, I could peek inside the
4790 implementation of av_clear(), realise that it uses
4791 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4792 and so directly steal from it (with a memcpy() to inc, and
4793 then memset() to NULL them out. But people copy code from the
4794 core expecting it to be best practise, so let's use the API.
4795 Although studious readers will note that I'm not checking any
4797 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4802 else if (push_basedir) {
4803 av_push(inc, libdir);
4806 if (!push_basedir) {
4807 assert (SvREFCNT(libdir) == 1);
4808 SvREFCNT_dec(libdir);
4814 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4818 /* This logic has been broken out from S_incpush(). It may be possible to
4821 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4823 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4824 * argument to incpush_use_sep. This allows creation of relocatable
4825 * Perl distributions that patch the binary at install time. Those
4826 * distributions will have to provide their own relocation tools; this
4827 * is not a feature otherwise supported by core Perl.
4829 #ifndef PERL_RELOCATABLE_INCPUSH
4836 /* Break at all separators */
4837 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4839 /* skip any consecutive separators */
4841 /* Uncomment the next line for PATH semantics */
4842 /* But you'll need to write tests */
4843 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4845 incpush(p, (STRLEN)(s - p), flags);
4850 incpush(p, (STRLEN)(end - p), flags);
4855 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4858 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4864 PERL_ARGS_ASSERT_CALL_LIST;
4866 while (av_tindex(paramList) >= 0) {
4867 cv = MUTABLE_CV(av_shift(paramList));
4869 if (paramList == PL_beginav) {
4870 /* save PL_beginav for compiler */
4871 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4873 else if (paramList == PL_checkav) {
4874 /* save PL_checkav for compiler */
4875 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4877 else if (paramList == PL_unitcheckav) {
4878 /* save PL_unitcheckav for compiler */
4879 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
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 NOT_REACHED; /* 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)
4939 if (PL_exit_flags & PERL_EXIT_ABORT) {
4942 if (PL_exit_flags & PERL_EXIT_WARN) {
4943 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4944 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4945 PL_exit_flags &= ~PERL_EXIT_ABORT;
4955 STATUS_EXIT_SET(status);
4962 Perl_my_failure_exit(pTHX)
4965 /* We have been called to fall on our sword. The desired exit code
4966 * should be already set in STATUS_UNIX, but could be shifted over
4967 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4970 * If an error code has not been set, then force the issue.
4972 if (MY_POSIX_EXIT) {
4974 /* According to the die_exit.t tests, if errno is non-zero */
4975 /* It should be used for the error status. */
4977 if (errno == EVMSERR) {
4978 STATUS_NATIVE = vaxc$errno;
4981 /* According to die_exit.t tests, if the child_exit code is */
4982 /* also zero, then we need to exit with a code of 255 */
4983 if ((errno != 0) && (errno < 256))
4984 STATUS_UNIX_EXIT_SET(errno);
4985 else if (STATUS_UNIX < 255) {
4986 STATUS_UNIX_EXIT_SET(255);
4991 /* The exit code could have been set by $? or vmsish which
4992 * means that it may not have fatal set. So convert
4993 * success/warning codes to fatal with out changing
4994 * the POSIX status code. The severity makes VMS native
4995 * status handling work, while UNIX mode programs use the
4996 * the POSIX exit codes.
4998 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4999 STATUS_NATIVE &= STS$M_COND_ID;
5000 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5004 /* Traditionally Perl on VMS always expects a Fatal Error. */
5005 if (vaxc$errno & 1) {
5007 /* So force success status to failure */
5008 if (STATUS_NATIVE & 1)
5013 STATUS_UNIX = EINTR; /* In case something cares */
5018 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5020 /* Encode the severity code */
5021 severity = STATUS_NATIVE & STS$M_SEVERITY;
5022 STATUS_UNIX = (severity ? severity : 1) << 8;
5024 /* Perl expects this to be a fatal error */
5025 if (severity != STS$K_SEVERE)
5034 STATUS_UNIX_SET(errno);
5036 exitstatus = STATUS_UNIX >> 8;
5037 if (exitstatus & 255)
5038 STATUS_UNIX_SET(exitstatus);
5040 STATUS_UNIX_SET(255);
5043 if (PL_exit_flags & PERL_EXIT_ABORT) {
5046 if (PL_exit_flags & PERL_EXIT_WARN) {
5047 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5048 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5049 PL_exit_flags &= ~PERL_EXIT_ABORT;
5055 S_my_exit_jump(pTHX)
5058 SvREFCNT_dec(PL_e_script);
5062 POPSTACK_TO(PL_mainstack);
5070 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5072 const char * const p = SvPVX_const(PL_e_script);
5073 const char *nl = strchr(p, '\n');
5075 PERL_UNUSED_ARG(idx);
5076 PERL_UNUSED_ARG(maxlen);
5078 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5080 filter_del(read_e_script);
5083 sv_catpvn(buf_sv, p, nl-p);
5084 sv_chop(PL_e_script, nl);
5088 /* removes boilerplate code at the end of each boot_Module xsub */
5090 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5093 call_list(PL_scopestack_ix, PL_unitcheckav);
5098 * ex: set ts=8 sts=4 sw=4 et: