4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
61 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
62 char *getenv (char *); /* Usually in <stdlib.h> */
65 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
67 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
68 # define validate_suid(rsfp) NOOP
70 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
73 #define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
79 #define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
84 S_init_tls_and_interp(PerlInterpreter *my_perl)
88 PERL_SET_INTERP(my_perl);
89 #if defined(USE_ITHREADS)
92 PERL_SET_THX(my_perl);
96 MUTEX_INIT(&PL_dollarzero_mutex);
97 MUTEX_INIT(&PL_my_ctx_mutex);
100 #if defined(USE_ITHREADS)
103 /* This always happens for non-ithreads */
106 PERL_SET_THX(my_perl);
111 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114 Perl_sys_init(int* argc, char*** argv)
118 PERL_ARGS_ASSERT_SYS_INIT;
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
126 Perl_sys_init3(int* argc, char*** argv, char*** env)
130 PERL_ARGS_ASSERT_SYS_INIT3;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
148 #ifdef PERL_IMPLICIT_SYS
150 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
156 PerlInterpreter *my_perl;
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160 /* Newx() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
162 S_init_tls_and_interp(my_perl);
163 Zero(my_perl, 1, PerlInterpreter);
173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
180 =head1 Embedding Functions
182 =for apidoc perl_alloc
184 Allocates a new Perl interpreter. See L<perlembed>.
192 PerlInterpreter *my_perl;
194 /* Newx() needs interpreter, so call malloc() instead */
195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
197 S_init_tls_and_interp(my_perl);
198 #ifndef PERL_TRACK_MEMPOOL
199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
206 #endif /* PERL_IMPLICIT_SYS */
209 =for apidoc perl_construct
211 Initializes a new Perl interpreter. See L<perlembed>.
217 perl_construct(pTHXx)
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
225 PL_perl_destruct_level = 1;
227 PERL_UNUSED_ARG(my_perl);
228 if (PL_perl_destruct_level > 0)
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 #ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
239 SvREADONLY_on(&PL_sv_placeholder);
240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
243 #ifdef PERL_USES_PL_PIDSTATUS
244 PL_pidstatus = newHV();
247 PL_rs = newSVpvs("\n");
258 #if defined(LOCAL_PATCH_COUNT)
259 PL_localpatches = local_patches; /* For possible -v */
262 #ifdef HAVE_INTERP_INTERN
266 PerlIO_init(aTHX); /* Hook to IO system */
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
270 PL_errors = newSVpvs("");
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
278 PL_regex_pad = AvARRAY(PL_regex_padav);
279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
281 #ifdef USE_REENTRANT_API
282 Perl_reentrant_init(aTHX);
284 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
296 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 # ifdef USE_ENVIRON_ARRAY
310 PL_origenviron = environ;
314 /* Use sysconf(_SC_CLK_TCK) if available, if not
315 * available or if the sysconf() fails, use the HZ.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
329 if (!PL_mmap_page_size) {
330 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 SETERRNO(0, SS_NORMAL);
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338 if ((long) PL_mmap_page_size < 0) {
340 SV * const error = ERRSV;
341 SvUPGRADE(error, SVt_PV);
342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
349 # ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
352 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
361 #endif /* HAS_MMAP */
363 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372 PL_registered_mros = newHV();
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
400 =for apidoc nothreadhook
402 Stub that provides thread hook for perl_destruct when there are
409 Perl_nothreadhook(pTHX)
415 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417 Perl_dump_sv_child(pTHX_ SV *sv)
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
422 union control_un control;
425 struct cmsghdr *cmptr;
427 unsigned char buffer[256];
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431 if(sock == -1 || debug_fd == -1)
434 PerlIO_flush(Perl_debug_log);
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
440 be open, the wait would be forever.) */
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
461 perror("Debug leaking scalars parent sendmsg failed");
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
469 /* Return protocol is
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
479 got = readv(sock, vec, 2);
482 perror("Debug leaking scalars parent read failed");
483 PerlIO_flush(PerlIO_stderr());
486 if(got < sizeof(returned_errno) + 1) {
487 perror("Debug leaking scalars parent short read");
488 PerlIO_flush(PerlIO_stderr());
493 got = read(sock, buffer + 1, *buffer);
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
510 returned_errno, Strerror(returned_errno));
516 =for apidoc perl_destruct
518 Shuts down a Perl interpreter. See L<perlembed>.
527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
529 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 assert(PL_scopestack_ix == 1);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
545 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
553 i = grok_atou(s, NULL);
556 if (destruct_level < i) destruct_level = i;
558 #ifdef PERL_TRACK_MEMPOOL
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
572 if (PL_endav && !PL_minus_c) {
573 PERL_SET_PHASE(PERL_PHASE_END);
574 call_list(PL_scopestack_ix, PL_endav);
580 assert(PL_scopestack_ix == 0);
582 /* Need to flush since END blocks can produce output */
585 #ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
599 if (PL_threadhook(aTHX)) {
600 /* Threads hook has vetoed further cleanup */
601 PL_veto_cleanup = TRUE;
605 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
621 perror("Debug leaking scalars fork failed");
625 /* We are the child */
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
630 /* Our success message is an integer 0, and a char 0 */
631 static const char success[sizeof(int) + 1] = {0};
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
647 f = sysconf(_SC_OPEN_MAX);
649 where = "sysconf failed";
660 union control_un control;
663 struct cmsghdr *cmptr;
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
675 vec[0].iov_base = (void*)⌖
676 vec[0].iov_len = sizeof(target);
678 got = recvmsg(sock, &msg, 0);
683 where = "recv failed";
686 if(got < sizeof(target)) {
687 where = "short recv";
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
720 PerlIO_flush(Perl_debug_log);
722 got = write(sock, &success, sizeof(success));
725 where = "write failed";
728 if(got < sizeof(success)) {
729 where = "short write";
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
741 {(void*)where, length}
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
750 _exit((got == -1) ? errno : 0);
754 PL_dumper_fd = fd[0];
759 /* We must account for everything. */
761 /* Destroy the main CV and syntax tree */
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
766 PL_curcop = &PL_compiling;
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
773 op_free(PL_main_root);
776 PL_main_start = NULL;
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
781 SvREFCNT_dec(PL_main_cv);
783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
790 PerlIO_destruct(aTHX);
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
799 /* unhook hooks which will soon be, or use, destroyed data */
800 SvREFCNT_dec(PL_warnhook);
802 SvREFCNT_dec(PL_diehook);
805 /* call exit list functions */
806 while (PL_exitlistlen-- > 0)
807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
809 Safefree(PL_exitlist);
814 SvREFCNT_dec(PL_registered_mros);
816 /* jettison our possibly duplicated environment */
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
821 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
822 if (environ != PL_origenviron && !PL_use_safe_putenv
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
831 for (i = 0; environ[i]; i++)
832 safesysfree(environ[i]);
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
837 environ = PL_origenviron;
840 #endif /* !PERL_MICRO */
842 if (destruct_level == 0) {
844 DEBUG_P(debprofdump());
846 #if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
851 CopFILE_free(&PL_compiling);
853 /* The exit() function will do everything that needs doing. */
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
878 PL_stashcache = NULL;
880 /* loosen bonds of global variables */
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
889 Safefree(PL_splitstr);
899 PL_doswitches = FALSE;
900 PL_dowarn = G_WARN_OFF;
901 #ifdef PERL_SAWAMPERSAND
902 PL_sawampersand = 0; /* must save all match strings */
906 Safefree(PL_inplace);
908 SvREFCNT_dec(PL_patchlevel);
911 SvREFCNT_dec(PL_e_script);
917 /* magical thingies */
919 SvREFCNT_dec(PL_ofsgv); /* *, */
922 SvREFCNT_dec(PL_ors_sv); /* $\ */
925 SvREFCNT_dec(PL_rs); /* $/ */
928 Safefree(PL_osname); /* $^O */
931 SvREFCNT_dec(PL_statname);
935 /* defgv, aka *_ should be taken care of elsewhere */
938 Safefree(PL_efloatbuf);
942 /* startup and shutdown function lists */
943 SvREFCNT_dec(PL_beginav);
944 SvREFCNT_dec(PL_beginav_save);
945 SvREFCNT_dec(PL_endav);
946 SvREFCNT_dec(PL_checkav);
947 SvREFCNT_dec(PL_checkav_save);
948 SvREFCNT_dec(PL_unitcheckav);
949 SvREFCNT_dec(PL_unitcheckav_save);
950 SvREFCNT_dec(PL_initav);
952 PL_beginav_save = NULL;
955 PL_checkav_save = NULL;
956 PL_unitcheckav = NULL;
957 PL_unitcheckav_save = NULL;
960 /* shortcuts just get cleared */
966 PL_last_in_gv = NULL;
977 SvREFCNT_dec(PL_envgv);
978 SvREFCNT_dec(PL_incgv);
979 SvREFCNT_dec(PL_argvgv);
980 SvREFCNT_dec(PL_replgv);
981 SvREFCNT_dec(PL_DBgv);
982 SvREFCNT_dec(PL_DBline);
983 SvREFCNT_dec(PL_DBsub);
992 SvREFCNT_dec(PL_argvout_stack);
993 PL_argvout_stack = NULL;
995 SvREFCNT_dec(PL_modglobal);
997 SvREFCNT_dec(PL_preambleav);
998 PL_preambleav = NULL;
999 SvREFCNT_dec(PL_subname);
1001 #ifdef PERL_USES_PL_PIDSTATUS
1002 SvREFCNT_dec(PL_pidstatus);
1003 PL_pidstatus = NULL;
1005 SvREFCNT_dec(PL_toptarget);
1006 PL_toptarget = NULL;
1007 SvREFCNT_dec(PL_bodytarget);
1008 PL_bodytarget = NULL;
1009 PL_formtarget = NULL;
1011 /* free locale stuff */
1012 #ifdef USE_LOCALE_COLLATE
1013 Safefree(PL_collation_name);
1014 PL_collation_name = NULL;
1017 #ifdef USE_LOCALE_NUMERIC
1018 Safefree(PL_numeric_name);
1019 PL_numeric_name = NULL;
1020 SvREFCNT_dec(PL_numeric_radix_sv);
1021 PL_numeric_radix_sv = NULL;
1024 /* clear character classes */
1025 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1026 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1027 PL_utf8_swash_ptrs[i] = NULL;
1029 SvREFCNT_dec(PL_utf8_mark);
1030 SvREFCNT_dec(PL_utf8_toupper);
1031 SvREFCNT_dec(PL_utf8_totitle);
1032 SvREFCNT_dec(PL_utf8_tolower);
1033 SvREFCNT_dec(PL_utf8_tofold);
1034 SvREFCNT_dec(PL_utf8_idstart);
1035 SvREFCNT_dec(PL_utf8_idcont);
1036 SvREFCNT_dec(PL_utf8_foldable);
1037 SvREFCNT_dec(PL_utf8_foldclosures);
1038 SvREFCNT_dec(PL_AboveLatin1);
1039 SvREFCNT_dec(PL_InBitmap);
1040 SvREFCNT_dec(PL_UpperLatin1);
1041 SvREFCNT_dec(PL_Latin1);
1042 SvREFCNT_dec(PL_NonL1NonFinalFold);
1043 SvREFCNT_dec(PL_HasMultiCharFold);
1044 SvREFCNT_dec(PL_warn_locale);
1045 PL_utf8_mark = NULL;
1046 PL_utf8_toupper = NULL;
1047 PL_utf8_totitle = NULL;
1048 PL_utf8_tolower = NULL;
1049 PL_utf8_tofold = NULL;
1050 PL_utf8_idstart = NULL;
1051 PL_utf8_idcont = NULL;
1052 PL_utf8_foldclosures = NULL;
1053 PL_AboveLatin1 = NULL;
1055 PL_HasMultiCharFold = NULL;
1056 PL_warn_locale = NULL;
1058 PL_NonL1NonFinalFold = NULL;
1059 PL_UpperLatin1 = NULL;
1060 for (i = 0; i < POSIX_CC_COUNT; i++) {
1061 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1062 PL_XPosix_ptrs[i] = NULL;
1064 PL_GCB_invlist = NULL;
1065 PL_SB_invlist = NULL;
1066 PL_WB_invlist = NULL;
1068 if (!specialWARN(PL_compiling.cop_warnings))
1069 PerlMemShared_free(PL_compiling.cop_warnings);
1070 PL_compiling.cop_warnings = NULL;
1071 cophh_free(CopHINTHASH_get(&PL_compiling));
1072 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1073 CopFILE_free(&PL_compiling);
1075 /* Prepare to destruct main symbol table. */
1078 /* break ref loop *:: <=> %:: */
1079 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1082 SvREFCNT_dec(PL_curstname);
1083 PL_curstname = NULL;
1085 /* clear queued errors */
1086 SvREFCNT_dec(PL_errors);
1089 SvREFCNT_dec(PL_isarev);
1092 if (destruct_level >= 2) {
1093 if (PL_scopestack_ix != 0)
1094 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1096 (long)PL_scopestack_ix);
1097 if (PL_savestack_ix != 0)
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced saves: %ld more saves than restores\n",
1100 (long)PL_savestack_ix);
1101 if (PL_tmps_floor != -1)
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1103 (long)PL_tmps_floor + 1);
1104 if (cxstack_ix != -1)
1105 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1106 (long)cxstack_ix + 1);
1110 SvREFCNT_dec(PL_regex_padav);
1111 PL_regex_padav = NULL;
1112 PL_regex_pad = NULL;
1115 #ifdef PERL_IMPLICIT_CONTEXT
1116 /* the entries in this list are allocated via SV PVX's, so get freed
1117 * in sv_clean_all */
1118 Safefree(PL_my_cxt_list);
1121 /* Now absolutely destruct everything, somehow or other, loops or no. */
1123 /* the 2 is for PL_fdpid and PL_strtab */
1124 while (sv_clean_all() > 2)
1128 Safefree(PL_stashpad); /* must come after sv_clean_all */
1131 AvREAL_off(PL_fdpid); /* no surviving entries */
1132 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1135 #ifdef HAVE_INTERP_INTERN
1139 /* constant strings */
1140 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1141 SvREFCNT_dec(PL_sv_consts[i]);
1142 PL_sv_consts[i] = NULL;
1145 /* Destruct the global string table. */
1147 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1148 * so that sv_free() won't fail on them.
1149 * Now that the global string table is using a single hunk of memory
1150 * for both HE and HEK, we either need to explicitly unshare it the
1151 * correct way, or actually free things here.
1154 const I32 max = HvMAX(PL_strtab);
1155 HE * const * const array = HvARRAY(PL_strtab);
1156 HE *hent = array[0];
1159 if (hent && ckWARN_d(WARN_INTERNAL)) {
1160 HE * const next = HeNEXT(hent);
1161 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1162 "Unbalanced string table refcount: (%ld) for \"%s\"",
1163 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1170 hent = array[riter];
1175 HvARRAY(PL_strtab) = 0;
1176 HvTOTALKEYS(PL_strtab) = 0;
1178 SvREFCNT_dec(PL_strtab);
1181 /* free the pointer tables used for cloning */
1182 ptr_table_free(PL_ptr_table);
1183 PL_ptr_table = (PTR_TBL_t*)NULL;
1186 /* free special SVs */
1188 SvREFCNT(&PL_sv_yes) = 0;
1189 sv_clear(&PL_sv_yes);
1190 SvANY(&PL_sv_yes) = NULL;
1191 SvFLAGS(&PL_sv_yes) = 0;
1193 SvREFCNT(&PL_sv_no) = 0;
1194 sv_clear(&PL_sv_no);
1195 SvANY(&PL_sv_no) = NULL;
1196 SvFLAGS(&PL_sv_no) = 0;
1200 for (i=0; i<=2; i++) {
1201 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1202 sv_clear(PERL_DEBUG_PAD(i));
1203 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1204 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1208 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1209 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1211 #ifdef DEBUG_LEAKING_SCALARS
1212 if (PL_sv_count != 0) {
1217 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1218 svend = &sva[SvREFCNT(sva)];
1219 for (sv = sva + 1; sv < svend; ++sv) {
1220 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1221 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1223 " refcnt=%"UVuf pTHX__FORMAT "\n"
1224 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1226 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1228 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1230 sv->sv_debug_inpad ? "for" : "by",
1231 sv->sv_debug_optype ?
1232 PL_op_name[sv->sv_debug_optype]: "(none)",
1233 PTR2UV(sv->sv_debug_parent),
1236 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1237 Perl_dump_sv_child(aTHX_ sv);
1243 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1247 /* Wait for up to 4 seconds for child to terminate.
1248 This seems to be the least effort way of timing out on reaping
1250 struct timeval waitfor = {4, 0};
1251 int sock = PL_dumper_fd;
1255 FD_SET(sock, &rset);
1256 select(sock + 1, &rset, NULL, NULL, &waitfor);
1257 waitpid(child, &status, WNOHANG);
1262 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1268 #if defined(PERLIO_LAYERS)
1269 /* No more IO - including error messages ! */
1270 PerlIO_cleanup(aTHX);
1273 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1274 as currently layers use it rather than NULL as a marker
1275 for no arg - and will try and SvREFCNT_dec it.
1277 SvREFCNT(&PL_sv_undef) = 0;
1278 SvREADONLY_off(&PL_sv_undef);
1280 Safefree(PL_origfilename);
1281 PL_origfilename = NULL;
1282 Safefree(PL_reg_curpm);
1283 free_tied_hv_pool();
1284 Safefree(PL_op_mask);
1285 Safefree(PL_psig_name);
1286 PL_psig_name = (SV**)NULL;
1287 PL_psig_ptr = (SV**)NULL;
1289 /* We need to NULL PL_psig_pend first, so that
1290 signal handlers know not to use it */
1291 int *psig_save = PL_psig_pend;
1292 PL_psig_pend = (int*)NULL;
1293 Safefree(psig_save);
1296 TAINTING_set(FALSE);
1297 TAINT_WARN_set(FALSE);
1298 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1300 DEBUG_P(debprofdump());
1304 #ifdef USE_REENTRANT_API
1305 Perl_reentrant_free(aTHX);
1310 while (PL_regmatch_slab) {
1311 regmatch_slab *s = PL_regmatch_slab;
1312 PL_regmatch_slab = PL_regmatch_slab->next;
1316 /* As the absolutely last thing, free the non-arena SV for mess() */
1319 /* we know that type == SVt_PVMG */
1321 /* it could have accumulated taint magic */
1324 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1325 moremagic = mg->mg_moremagic;
1326 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1328 Safefree(mg->mg_ptr);
1332 /* we know that type >= SVt_PV */
1333 SvPV_free(PL_mess_sv);
1334 Safefree(SvANY(PL_mess_sv));
1335 Safefree(PL_mess_sv);
1342 =for apidoc perl_free
1344 Releases a Perl interpreter. See L<perlembed>.
1354 PERL_ARGS_ASSERT_PERL_FREE;
1356 if (PL_veto_cleanup)
1359 #ifdef PERL_TRACK_MEMPOOL
1362 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1363 * value as we're probably hunting memory leaks then
1365 if (PL_perl_destruct_level == 0) {
1366 const U32 old_debug = PL_debug;
1367 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1368 thread at thread exit. */
1370 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1371 "free this thread's memory\n");
1372 PL_debug &= ~ DEBUG_m_FLAG;
1374 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1375 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1376 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1379 PL_debug = old_debug;
1384 #if defined(WIN32) || defined(NETWARE)
1385 # if defined(PERL_IMPLICIT_SYS)
1388 void *host = nw_internal_host;
1389 PerlMem_free(aTHXx);
1390 nw_delete_internal_host(host);
1392 void *host = w32_internal_host;
1393 PerlMem_free(aTHXx);
1394 win32_delete_internal_host(host);
1398 PerlMem_free(aTHXx);
1401 PerlMem_free(aTHXx);
1405 #if defined(USE_ITHREADS)
1406 /* provide destructors to clean up the thread key when libperl is unloaded */
1407 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1409 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1410 #pragma fini "perl_fini"
1411 #elif defined(__sun) && !defined(__GNUC__)
1412 #pragma fini (perl_fini)
1416 #if defined(__GNUC__)
1417 __attribute__((destructor))
1423 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1426 PL_curinterp && !PL_veto_cleanup)
1431 #endif /* THREADS */
1434 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1436 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1437 PL_exitlist[PL_exitlistlen].fn = fn;
1438 PL_exitlist[PL_exitlistlen].ptr = ptr;
1443 =for apidoc perl_parse
1445 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450 #define SET_CURSTASH(newstash) \
1451 if (PL_curstash != newstash) { \
1452 SvREFCNT_dec(PL_curstash); \
1453 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1457 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1464 PERL_ARGS_ASSERT_PERL_PARSE;
1465 #ifndef MULTIPLICITY
1466 PERL_UNUSED_ARG(my_perl);
1468 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1470 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1472 if (s && (grok_atou(s, NULL) == 1)) {
1473 unsigned char *seed= PERL_HASH_SEED;
1474 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1475 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1476 while (seed < seed_end) {
1477 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1479 #ifdef PERL_HASH_RANDOMIZE_KEYS
1480 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1481 PL_HASH_RAND_BITS_ENABLED,
1482 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1484 PerlIO_printf(Perl_debug_log, "\n");
1487 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1491 if (PL_origalen != 0) {
1492 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1495 /* Set PL_origalen be the sum of the contiguous argv[]
1496 * elements plus the size of the env in case that it is
1497 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1498 * as the maximum modifiable length of $0. In the worst case
1499 * the area we are able to modify is limited to the size of
1500 * the original argv[0]. (See below for 'contiguous', though.)
1502 const char *s = NULL;
1504 const UV mask = ~(UV)(PTRSIZE-1);
1505 /* Do the mask check only if the args seem like aligned. */
1507 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1509 /* See if all the arguments are contiguous in memory. Note
1510 * that 'contiguous' is a loose term because some platforms
1511 * align the argv[] and the envp[]. If the arguments look
1512 * like non-aligned, assume that they are 'strictly' or
1513 * 'traditionally' contiguous. If the arguments look like
1514 * aligned, we just check that they are within aligned
1515 * PTRSIZE bytes. As long as no system has something bizarre
1516 * like the argv[] interleaved with some other data, we are
1517 * fine. (Did I just evoke Murphy's Law?) --jhi */
1518 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1520 for (i = 1; i < PL_origargc; i++) {
1521 if ((PL_origargv[i] == s + 1
1523 || PL_origargv[i] == s + 2
1528 (PL_origargv[i] > s &&
1530 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1541 #ifndef PERL_USE_SAFE_PUTENV
1542 /* Can we grab env area too to be used as the area for $0? */
1543 if (s && PL_origenviron && !PL_use_safe_putenv) {
1544 if ((PL_origenviron[0] == s + 1)
1547 (PL_origenviron[0] > s &&
1548 PL_origenviron[0] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1553 s = PL_origenviron[0];
1556 my_setenv("NoNe SuCh", NULL);
1557 /* Force copy of environment. */
1558 for (i = 1; PL_origenviron[i]; i++) {
1559 if (PL_origenviron[i] == s + 1
1562 (PL_origenviron[i] > s &&
1563 PL_origenviron[i] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 s = PL_origenviron[i];
1575 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1577 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1582 /* Come here if running an undumped a.out. */
1584 PL_origfilename = savepv(argv[0]);
1585 PL_do_undump = FALSE;
1586 cxstack_ix = -1; /* start label stack again */
1588 assert (!TAINT_get);
1592 init_postdump_symbols(argc,argv,env);
1597 op_free(PL_main_root);
1598 PL_main_root = NULL;
1600 PL_main_start = NULL;
1601 SvREFCNT_dec(PL_main_cv);
1605 oldscope = PL_scopestack_ix;
1606 PL_dowarn = G_WARN_OFF;
1611 parse_body(env,xsinit);
1612 if (PL_unitcheckav) {
1613 call_list(oldscope, PL_unitcheckav);
1616 PERL_SET_PHASE(PERL_PHASE_CHECK);
1617 call_list(oldscope, PL_checkav);
1625 /* my_exit() was called */
1626 while (PL_scopestack_ix > oldscope)
1629 SET_CURSTASH(PL_defstash);
1630 if (PL_unitcheckav) {
1631 call_list(oldscope, PL_unitcheckav);
1634 PERL_SET_PHASE(PERL_PHASE_CHECK);
1635 call_list(oldscope, PL_checkav);
1640 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1648 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1649 miniperl, and we need to see those flags reflected in the values here. */
1651 /* What this returns is subject to change. Use the public interface in Config.
1654 S_Internals_V(pTHX_ CV *cv)
1657 #ifdef LOCAL_PATCH_COUNT
1658 const int local_patch_count = LOCAL_PATCH_COUNT;
1660 const int local_patch_count = 0;
1662 const int entries = 3 + local_patch_count;
1664 static const char non_bincompat_options[] =
1671 # ifdef NO_HASH_SEED
1674 # ifdef NO_TAINT_SUPPORT
1677 # ifdef PERL_BOOL_AS_CHAR
1678 " PERL_BOOL_AS_CHAR"
1680 # ifdef PERL_DISABLE_PMC
1683 # ifdef PERL_DONT_CREATE_GVSV
1684 " PERL_DONT_CREATE_GVSV"
1686 # ifdef PERL_EXTERNAL_GLOB
1687 " PERL_EXTERNAL_GLOB"
1689 # ifdef PERL_HASH_FUNC_SIPHASH
1690 " PERL_HASH_FUNC_SIPHASH"
1692 # ifdef PERL_HASH_FUNC_SDBM
1693 " PERL_HASH_FUNC_SDBM"
1695 # ifdef PERL_HASH_FUNC_DJB2
1696 " PERL_HASH_FUNC_DJB2"
1698 # ifdef PERL_HASH_FUNC_SUPERFAST
1699 " PERL_HASH_FUNC_SUPERFAST"
1701 # ifdef PERL_HASH_FUNC_MURMUR3
1702 " PERL_HASH_FUNC_MURMUR3"
1704 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1705 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1707 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1708 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1710 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1711 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1713 # ifdef PERL_IS_MINIPERL
1716 # ifdef PERL_MALLOC_WRAP
1719 # ifdef PERL_MEM_LOG
1722 # ifdef PERL_MEM_LOG_NOIMPL
1723 " PERL_MEM_LOG_NOIMPL"
1725 # ifdef PERL_NEW_COPY_ON_WRITE
1726 " PERL_NEW_COPY_ON_WRITE"
1728 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1729 " PERL_PERTURB_KEYS_DETERMINISTIC"
1731 # ifdef PERL_PERTURB_KEYS_DISABLED
1732 " PERL_PERTURB_KEYS_DISABLED"
1734 # ifdef PERL_PERTURB_KEYS_RANDOM
1735 " PERL_PERTURB_KEYS_RANDOM"
1737 # ifdef PERL_PRESERVE_IVUV
1738 " PERL_PRESERVE_IVUV"
1740 # ifdef PERL_RELOCATABLE_INCPUSH
1741 " PERL_RELOCATABLE_INCPUSH"
1743 # ifdef PERL_USE_DEVEL
1746 # ifdef PERL_USE_SAFE_PUTENV
1747 " PERL_USE_SAFE_PUTENV"
1749 # ifdef UNLINK_ALL_VERSIONS
1750 " UNLINK_ALL_VERSIONS"
1752 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1753 " USE_ATTRIBUTES_FOR_PERLIO"
1755 # ifdef USE_FAST_STDIO
1758 # ifdef USE_HASH_SEED_EXPLICIT
1759 " USE_HASH_SEED_EXPLICIT"
1764 # ifdef USE_LOCALE_CTYPE
1767 # ifdef USE_PERL_ATOF
1770 # ifdef USE_SITECUSTOMIZE
1771 " USE_SITECUSTOMIZE"
1774 PERL_UNUSED_ARG(cv);
1775 PERL_UNUSED_VAR(items);
1777 EXTEND(SP, entries);
1779 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1780 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1781 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1785 PUSHs(Perl_newSVpvn_flags(aTHX_
1786 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1789 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1793 PUSHs(&PL_sv_undef);
1796 for (i = 1; i <= local_patch_count; i++) {
1797 /* This will be an undef, if PL_localpatches[i] is NULL. */
1798 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1804 #define INCPUSH_UNSHIFT 0x01
1805 #define INCPUSH_ADD_OLD_VERS 0x02
1806 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1807 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1808 #define INCPUSH_NOT_BASEDIR 0x10
1809 #define INCPUSH_CAN_RELOCATE 0x20
1810 #define INCPUSH_ADD_SUB_DIRS \
1811 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1814 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1818 int argc = PL_origargc;
1819 char **argv = PL_origargv;
1820 const char *scriptname = NULL;
1821 VOL bool dosearch = FALSE;
1823 bool doextract = FALSE;
1824 const char *cddir = NULL;
1825 #ifdef USE_SITECUSTOMIZE
1826 bool minus_f = FALSE;
1828 SV *linestr_sv = NULL;
1829 bool add_read_e_script = FALSE;
1830 U32 lex_start_flags = 0;
1832 PERL_SET_PHASE(PERL_PHASE_START);
1838 for (argc--,argv++; argc > 0; argc--,argv++) {
1839 if (argv[0][0] != '-' || !argv[0][1])
1845 #ifndef PERL_STRICT_CR
1869 if ((s = moreswitches(s)))
1874 #if defined(SILENT_NO_TAINT_SUPPORT)
1875 /* silently ignore */
1876 #elif defined(NO_TAINT_SUPPORT)
1877 Perl_croak_nocontext("This perl was compiled without taint support. "
1878 "Cowardly refusing to run with -t or -T flags");
1880 CHECK_MALLOC_TOO_LATE_FOR('t');
1881 if( !TAINTING_get ) {
1882 TAINT_WARN_set(TRUE);
1889 #if defined(SILENT_NO_TAINT_SUPPORT)
1890 /* silently ignore */
1891 #elif defined(NO_TAINT_SUPPORT)
1892 Perl_croak_nocontext("This perl was compiled without taint support. "
1893 "Cowardly refusing to run with -t or -T flags");
1895 CHECK_MALLOC_TOO_LATE_FOR('T');
1897 TAINT_WARN_set(FALSE);
1906 forbid_setid('e', FALSE);
1908 PL_e_script = newSVpvs("");
1909 add_read_e_script = TRUE;
1912 sv_catpv(PL_e_script, s);
1914 sv_catpv(PL_e_script, argv[1]);
1918 Perl_croak(aTHX_ "No code specified for -%c", c);
1919 sv_catpvs(PL_e_script, "\n");
1923 #ifdef USE_SITECUSTOMIZE
1929 case 'I': /* -I handled both here and in moreswitches() */
1930 forbid_setid('I', FALSE);
1931 if (!*++s && (s=argv[1]) != NULL) {
1935 STRLEN len = strlen(s);
1936 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1939 Perl_croak(aTHX_ "No directory specified for -I");
1942 forbid_setid('S', FALSE);
1951 opts_prog = newSVpvs("use Config; Config::_V()");
1955 opts_prog = Perl_newSVpvf(aTHX_
1956 "use Config; Config::config_vars(qw%c%s%c)",
1960 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1961 /* don't look for script or read stdin */
1962 scriptname = BIT_BUCKET;
1974 if (!*++s || isSPACE(*s)) {
1978 /* catch use of gnu style long options.
1979 Both of these exit immediately. */
1980 if (strEQ(s, "version"))
1982 if (strEQ(s, "help"))
1987 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1998 #ifndef SECURE_INTERNAL_GETENV
2001 (s = PerlEnv_getenv("PERL5OPT")))
2005 if (*s == '-' && *(s+1) == 'T') {
2006 #if defined(SILENT_NO_TAINT_SUPPORT)
2007 /* silently ignore */
2008 #elif defined(NO_TAINT_SUPPORT)
2009 Perl_croak_nocontext("This perl was compiled without taint support. "
2010 "Cowardly refusing to run with -t or -T flags");
2012 CHECK_MALLOC_TOO_LATE_FOR('T');
2014 TAINT_WARN_set(FALSE);
2018 char *popt_copy = NULL;
2031 if (!strchr("CDIMUdmtwW", *s))
2032 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2036 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2037 s = popt_copy + (s - d);
2045 #if defined(SILENT_NO_TAINT_SUPPORT)
2046 /* silently ignore */
2047 #elif defined(NO_TAINT_SUPPORT)
2048 Perl_croak_nocontext("This perl was compiled without taint support. "
2049 "Cowardly refusing to run with -t or -T flags");
2051 if( !TAINTING_get) {
2052 TAINT_WARN_set(TRUE);
2064 /* Set $^X early so that it can be used for relocatable paths in @INC */
2065 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2066 assert (!TAINT_get);
2071 #if defined(USE_SITECUSTOMIZE)
2073 /* The games with local $! are to avoid setting errno if there is no
2074 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2075 ie a q() operator with a NUL byte as a the delimiter. This avoids
2076 problems with pathnames containing (say) ' */
2077 # ifdef PERL_IS_MINIPERL
2078 AV *const inc = GvAV(PL_incgv);
2079 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2082 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2083 it should be reported immediately as a build failure. */
2084 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2086 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2087 "do {local $!; -f $f }"
2088 " and do $f || die $@ || qq '$f: $!' }",
2089 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2092 /* SITELIB_EXP is a function call on Win32. */
2093 const char *const raw_sitelib = SITELIB_EXP;
2095 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2096 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2097 INCPUSH_CAN_RELOCATE);
2098 const char *const sitelib = SvPVX(sitelib_sv);
2099 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2101 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2102 0, SVfARG(sitelib), 0,
2103 0, SVfARG(sitelib), 0));
2104 assert (SvREFCNT(sitelib_sv) == 1);
2105 SvREFCNT_dec(sitelib_sv);
2112 scriptname = argv[0];
2115 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2117 else if (scriptname == NULL) {
2119 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2125 assert (!TAINT_get);
2129 bool suidscript = FALSE;
2131 rsfp = open_script(scriptname, dosearch, &suidscript);
2133 rsfp = PerlIO_stdin();
2134 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2137 validate_suid(rsfp);
2140 # if defined(SIGCHLD) || defined(SIGCLD)
2143 # define SIGCHLD SIGCLD
2145 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2146 if (sigstate == (Sighandler_t) SIG_IGN) {
2147 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2148 "Can't ignore signal CHLD, forcing to default");
2149 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2157 /* This will croak if suidscript is true, as -x cannot be used with
2159 forbid_setid('x', suidscript);
2160 /* Hence you can't get here if suidscript is true */
2162 linestr_sv = newSV_type(SVt_PV);
2163 lex_start_flags |= LEX_START_COPIED;
2164 find_beginning(linestr_sv, rsfp);
2165 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2166 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2170 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2171 CvUNIQUE_on(PL_compcv);
2173 CvPADLIST_set(PL_compcv, pad_new(0));
2175 PL_isarev = newHV();
2178 boot_core_UNIVERSAL();
2180 newXS("Internals::V", S_Internals_V, __FILE__);
2183 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2185 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2191 # ifdef HAS_SOCKS5_INIT
2192 socks5_init(argv[0]);
2198 init_predump_symbols();
2199 /* init_postdump_symbols not currently designed to be called */
2200 /* more than once (ENV isn't cleared first, for example) */
2201 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2203 init_postdump_symbols(argc,argv,env);
2205 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2206 * or explicitly in some platforms.
2207 * locale.c:Perl_init_i18nl10n() if the environment
2208 * look like the user wants to use UTF-8. */
2209 #if defined(__SYMBIAN32__)
2210 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2212 # ifndef PERL_IS_MINIPERL
2214 /* Requires init_predump_symbols(). */
2215 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2220 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2221 * and the default open disciplines. */
2222 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2223 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2225 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2226 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2227 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2229 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2230 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2231 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2233 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2234 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2235 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2237 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2238 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2241 sv_setpvs(sv, ":utf8\0:utf8");
2243 sv_setpvs(sv, ":utf8\0");
2246 sv_setpvs(sv, "\0:utf8");
2255 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2256 if (strEQ(s, "unsafe"))
2257 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2258 else if (strEQ(s, "safe"))
2259 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2261 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2266 lex_start(linestr_sv, rsfp, lex_start_flags);
2267 SvREFCNT_dec(linestr_sv);
2269 PL_subname = newSVpvs("main");
2271 if (add_read_e_script)
2272 filter_add(read_e_script, NULL);
2274 /* now parse the script */
2276 SETERRNO(0,SS_NORMAL);
2277 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2279 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2281 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2285 CopLINE_set(PL_curcop, 0);
2286 SET_CURSTASH(PL_defstash);
2288 SvREFCNT_dec(PL_e_script);
2296 SAVECOPFILE(PL_curcop);
2297 SAVECOPLINE(PL_curcop);
2298 gv_check(PL_defstash);
2307 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2308 dump_mstats("after compilation:");
2313 PL_restartjmpenv = NULL;
2319 =for apidoc perl_run
2321 Tells a Perl interpreter to run. See L<perlembed>.
2333 PERL_ARGS_ASSERT_PERL_RUN;
2334 #ifndef MULTIPLICITY
2335 PERL_UNUSED_ARG(my_perl);
2338 oldscope = PL_scopestack_ix;
2346 cxstack_ix = -1; /* start context stack again */
2348 case 0: /* normal completion */
2352 case 2: /* my_exit() */
2353 while (PL_scopestack_ix > oldscope)
2356 SET_CURSTASH(PL_defstash);
2357 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2358 PL_endav && !PL_minus_c) {
2359 PERL_SET_PHASE(PERL_PHASE_END);
2360 call_list(oldscope, PL_endav);
2363 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2364 dump_mstats("after execution: ");
2370 POPSTACK_TO(PL_mainstack);
2373 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2384 S_run_body(pTHX_ I32 oldscope)
2386 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2387 PL_sawampersand ? "Enabling" : "Omitting",
2388 (unsigned int)(PL_sawampersand)));
2390 if (!PL_restartop) {
2392 if (DEBUG_x_TEST || DEBUG_B_TEST)
2393 dump_all_perl(!DEBUG_B_TEST);
2395 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2399 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2402 if (PERLDB_SINGLE && PL_DBsingle)
2405 PERL_SET_PHASE(PERL_PHASE_INIT);
2406 call_list(oldscope, PL_initav);
2408 #ifdef PERL_DEBUG_READONLY_OPS
2409 if (PL_main_root && PL_main_root->op_slabbed)
2410 Slab_to_ro(OpSLAB(PL_main_root));
2416 PERL_SET_PHASE(PERL_PHASE_RUN);
2419 PL_restartjmpenv = NULL;
2420 PL_op = PL_restartop;
2424 else if (PL_main_start) {
2425 CvDEPTH(PL_main_cv) = 1;
2426 PL_op = PL_main_start;
2430 NOT_REACHED; /* NOTREACHED */
2434 =head1 SV Manipulation Functions
2436 =for apidoc p||get_sv
2438 Returns the SV of the specified Perl scalar. C<flags> are passed to
2439 C<gv_fetchpv>. If C<GV_ADD> is set and the
2440 Perl variable does not exist then it will be created. If C<flags> is zero
2441 and the variable does not exist then NULL is returned.
2447 Perl_get_sv(pTHX_ const char *name, I32 flags)
2451 PERL_ARGS_ASSERT_GET_SV;
2453 gv = gv_fetchpv(name, flags, SVt_PV);
2460 =head1 Array Manipulation Functions
2462 =for apidoc p||get_av
2464 Returns the AV of the specified Perl global or package array with the given
2465 name (so it won't work on lexical variables). C<flags> are passed
2466 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2467 Perl variable does not exist then it will be created. If C<flags> is zero
2468 and the variable does not exist then NULL is returned.
2470 Perl equivalent: C<@{"$name"}>.
2476 Perl_get_av(pTHX_ const char *name, I32 flags)
2478 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2480 PERL_ARGS_ASSERT_GET_AV;
2490 =head1 Hash Manipulation Functions
2492 =for apidoc p||get_hv
2494 Returns the HV of the specified Perl hash. C<flags> are passed to
2495 C<gv_fetchpv>. If C<GV_ADD> is set and the
2496 Perl variable does not exist then it will be created. If C<flags> is zero
2497 and the variable does not exist then NULL is returned.
2503 Perl_get_hv(pTHX_ const char *name, I32 flags)
2505 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2507 PERL_ARGS_ASSERT_GET_HV;
2517 =head1 CV Manipulation Functions
2519 =for apidoc p||get_cvn_flags
2521 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2522 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2523 exist then it will be declared (which has the same effect as saying
2524 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2525 then NULL is returned.
2527 =for apidoc p||get_cv
2529 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2535 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2537 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2539 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2541 /* XXX this is probably not what they think they're getting.
2542 * It has the same effect as "sub name;", i.e. just a forward
2544 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2545 return newSTUB(gv,0);
2552 /* Nothing in core calls this now, but we can't replace it with a macro and
2553 move it to mathoms.c as a macro would evaluate name twice. */
2555 Perl_get_cv(pTHX_ const char *name, I32 flags)
2557 PERL_ARGS_ASSERT_GET_CV;
2559 return get_cvn_flags(name, strlen(name), flags);
2562 /* Be sure to refetch the stack pointer after calling these routines. */
2566 =head1 Callback Functions
2568 =for apidoc p||call_argv
2570 Performs a callback to the specified named and package-scoped Perl subroutine
2571 with C<argv> (a NULL-terminated array of strings) as arguments. See
2574 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2580 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2582 /* See G_* flags in cop.h */
2583 /* null terminated arg list */
2587 PERL_ARGS_ASSERT_CALL_ARGV;
2592 mXPUSHs(newSVpv(*argv,0));
2597 return call_pv(sub_name, flags);
2601 =for apidoc p||call_pv
2603 Performs a callback to the specified Perl sub. See L<perlcall>.
2609 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2610 /* name of the subroutine */
2611 /* See G_* flags in cop.h */
2613 PERL_ARGS_ASSERT_CALL_PV;
2615 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2619 =for apidoc p||call_method
2621 Performs a callback to the specified Perl method. The blessed object must
2622 be on the stack. See L<perlcall>.
2628 Perl_call_method(pTHX_ const char *methname, I32 flags)
2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
2634 PERL_ARGS_ASSERT_CALL_METHOD;
2636 len = strlen(methname);
2637 sv = flags & G_METHOD_NAMED
2638 ? sv_2mortal(newSVpvn_share(methname, len,0))
2639 : newSVpvn_flags(methname, len, SVs_TEMP);
2641 return call_sv(sv, flags | G_METHOD);
2644 /* May be called with any of a CV, a GV, or an SV containing the name. */
2646 =for apidoc p||call_sv
2648 Performs a callback to the Perl sub whose name is in the SV. See
2655 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2656 /* See G_* flags in cop.h */
2659 LOGOP myop; /* fake syntax tree node */
2664 bool oldcatch = CATCH_GET;
2666 OP* const oldop = PL_op;
2669 PERL_ARGS_ASSERT_CALL_SV;
2671 if (flags & G_DISCARD) {
2675 if (!(flags & G_WANT)) {
2676 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2681 Zero(&myop, 1, LOGOP);
2682 if (!(flags & G_NOARGS))
2683 myop.op_flags |= OPf_STACKED;
2684 myop.op_flags |= OP_GIMME_REVERSE(flags);
2688 EXTEND(PL_stack_sp, 1);
2689 if (!(flags & G_METHOD_NAMED))
2690 *++PL_stack_sp = sv;
2692 oldscope = PL_scopestack_ix;
2694 if (PERLDB_SUB && PL_curstash != PL_debstash
2695 /* Handle first BEGIN of -d. */
2696 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2697 /* Try harder, since this may have been a sighandler, thus
2698 * curstash may be meaningless. */
2699 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2700 && !(flags & G_NODEBUG))
2701 myop.op_private |= OPpENTERSUB_DB;
2703 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2704 Zero(&method_op, 1, METHOP);
2705 method_op.op_next = (OP*)&myop;
2706 PL_op = (OP*)&method_op;
2707 if ( flags & G_METHOD_NAMED ) {
2708 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2709 method_op.op_type = OP_METHOD_NAMED;
2710 method_op.op_u.op_meth_sv = sv;
2712 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2713 method_op.op_type = OP_METHOD;
2715 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2716 myop.op_type = OP_ENTERSUB;
2719 if (!(flags & G_EVAL)) {
2721 CALL_BODY_SUB((OP*)&myop);
2722 retval = PL_stack_sp - (PL_stack_base + oldmark);
2723 CATCH_SET(oldcatch);
2726 myop.op_other = (OP*)&myop;
2728 create_eval_scope(flags|G_FAKINGEVAL);
2736 CALL_BODY_SUB((OP*)&myop);
2737 retval = PL_stack_sp - (PL_stack_base + oldmark);
2738 if (!(flags & G_KEEPERR)) {
2746 /* my_exit() was called */
2747 SET_CURSTASH(PL_defstash);
2751 NOT_REACHED; /* NOTREACHED */
2754 PL_restartjmpenv = NULL;
2755 PL_op = PL_restartop;
2759 PL_stack_sp = PL_stack_base + oldmark;
2760 if ((flags & G_WANT) == G_ARRAY)
2764 *++PL_stack_sp = &PL_sv_undef;
2769 if (PL_scopestack_ix > oldscope)
2770 delete_eval_scope();
2774 if (flags & G_DISCARD) {
2775 PL_stack_sp = PL_stack_base + oldmark;
2784 /* Eval a string. The G_EVAL flag is always assumed. */
2787 =for apidoc p||eval_sv
2789 Tells Perl to C<eval> the string in the SV. It supports the same flags
2790 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2796 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2798 /* See G_* flags in cop.h */
2802 UNOP myop; /* fake syntax tree node */
2803 VOL I32 oldmark = SP - PL_stack_base;
2806 OP* const oldop = PL_op;
2809 PERL_ARGS_ASSERT_EVAL_SV;
2811 if (flags & G_DISCARD) {
2818 Zero(&myop, 1, UNOP);
2819 EXTEND(PL_stack_sp, 1);
2820 *++PL_stack_sp = sv;
2822 if (!(flags & G_NOARGS))
2823 myop.op_flags = OPf_STACKED;
2824 myop.op_type = OP_ENTEREVAL;
2825 myop.op_flags |= OP_GIMME_REVERSE(flags);
2826 if (flags & G_KEEPERR)
2827 myop.op_flags |= OPf_SPECIAL;
2829 if (flags & G_RE_REPARSING)
2830 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2832 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2833 * before a PUSHEVAL, which corrupts the stack after a croak */
2834 TAINT_PROPER("eval_sv()");
2840 if (PL_op == (OP*)(&myop)) {
2841 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2843 goto fail; /* failed in compilation */
2846 retval = PL_stack_sp - (PL_stack_base + oldmark);
2847 if (!(flags & G_KEEPERR)) {
2855 /* my_exit() was called */
2856 SET_CURSTASH(PL_defstash);
2860 NOT_REACHED; /* NOTREACHED */
2863 PL_restartjmpenv = NULL;
2864 PL_op = PL_restartop;
2869 PL_stack_sp = PL_stack_base + oldmark;
2870 if ((flags & G_WANT) == G_ARRAY)
2874 *++PL_stack_sp = &PL_sv_undef;
2880 if (flags & G_DISCARD) {
2881 PL_stack_sp = PL_stack_base + oldmark;
2891 =for apidoc p||eval_pv
2893 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2899 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2901 SV* sv = newSVpv(p, 0);
2903 PERL_ARGS_ASSERT_EVAL_PV;
2905 eval_sv(sv, G_SCALAR);
2914 /* just check empty string or undef? */
2915 if (croak_on_error) {
2916 SV * const errsv = ERRSV;
2917 if(SvTRUE_NN(errsv))
2918 /* replace with croak_sv? */
2919 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2925 /* Require a module. */
2928 =head1 Embedding Functions
2930 =for apidoc p||require_pv
2932 Tells Perl to C<require> the file named by the string argument. It is
2933 analogous to the Perl code C<eval "require '$file'">. It's even
2934 implemented that way; consider using load_module instead.
2939 Perl_require_pv(pTHX_ const char *pv)
2944 PERL_ARGS_ASSERT_REQUIRE_PV;
2946 PUSHSTACKi(PERLSI_REQUIRE);
2947 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2948 eval_sv(sv_2mortal(sv), G_DISCARD);
2953 S_usage(pTHX) /* XXX move this out into a module ? */
2955 /* This message really ought to be max 23 lines.
2956 * Removed -h because the user already knows that option. Others? */
2958 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2959 minimum of 509 character string literals. */
2960 static const char * const usage_msg[] = {
2961 " -0[octal] specify record separator (\\0, if no argument)\n"
2962 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
2963 " -C[number/list] enables the listed Unicode features\n"
2964 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
2965 " -d[:debugger] run program under debugger\n"
2966 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2967 " -e program one line of program (several -e's allowed, omit programfile)\n"
2968 " -E program like -e, but enables all optional features\n"
2969 " -f don't do $sitelib/sitecustomize.pl at startup\n"
2970 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2971 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2972 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2973 " -l[octal] enable line ending processing, specifies line terminator\n"
2974 " -[mM][-]module execute \"use/no module...\" before executing program\n"
2975 " -n assume \"while (<>) { ... }\" loop around program\n"
2976 " -p assume loop like -n but print line also, like sed\n"
2977 " -s enable rudimentary parsing for switches after programfile\n"
2978 " -S look for programfile using PATH environment variable\n",
2979 " -t enable tainting warnings\n"
2980 " -T enable tainting checks\n"
2981 " -u dump core after parsing program\n"
2982 " -U allow unsafe operations\n"
2983 " -v print version, patchlevel and license\n"
2984 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
2985 " -w enable many useful warnings\n"
2986 " -W enable all warnings\n"
2987 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2988 " -X disable all warnings\n"
2990 "Run 'perldoc perl' for more help with Perl.\n\n",
2993 const char * const *p = usage_msg;
2994 PerlIO *out = PerlIO_stdout();
2997 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3000 PerlIO_puts(out, *p++);
3004 /* convert a string of -D options (or digits) into an int.
3005 * sets *s to point to the char after the options */
3009 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3011 static const char * const usage_msgd[] = {
3012 " Debugging flag values: (see also -d)\n"
3013 " p Tokenizing and parsing (with v, displays parse stack)\n"
3014 " s Stack snapshots (with v, displays all stacks)\n"
3015 " l Context (loop) stack processing\n"
3016 " t Trace execution\n"
3017 " o Method and overloading resolution\n",
3018 " c String/numeric conversions\n"
3019 " P Print profiling info, source file input state\n"
3020 " m Memory and SV allocation\n"
3021 " f Format processing\n"
3022 " r Regular expression parsing and execution\n"
3023 " x Syntax tree dump\n",
3024 " u Tainting checks\n"
3025 " H Hash dump -- usurps values()\n"
3026 " X Scratchpad allocation\n"
3028 " S Op slab allocation\n"
3030 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3031 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3032 " v Verbose: use in conjunction with other flags\n"
3033 " C Copy On Write\n"
3034 " A Consistency checks on internal structures\n"
3035 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3036 " M trace smart match resolution\n"
3037 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3038 " L trace some locale setting information--for Perl core development\n",
3043 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3046 /* if adding extra options, remember to update DEBUG_MASK */
3047 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3049 for (; isWORDCHAR(**s); (*s)++) {
3050 const char * const d = strchr(debopts,**s);
3052 i |= 1 << (d - debopts);
3053 else if (ckWARN_d(WARN_DEBUGGING))
3054 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3055 "invalid option -D%c, use -D'' to see choices\n", **s);
3058 else if (isDIGIT(**s)) {
3060 i = grok_atou(*s, &e);
3063 for (; isWORDCHAR(**s); (*s)++) ;
3065 else if (givehelp) {
3066 const char *const *p = usage_msgd;
3067 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3073 /* This routine handles any switches that can be given during run */
3076 Perl_moreswitches(pTHX_ const char *s)
3080 const char option = *s; /* used to remember option in -m/-M code */
3082 PERL_ARGS_ASSERT_MORESWITCHES;
3090 SvREFCNT_dec(PL_rs);
3091 if (s[1] == 'x' && s[2]) {
3092 const char *e = s+=2;
3098 flags = PERL_SCAN_SILENT_ILLDIGIT;
3099 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3100 if (s + numlen < e) {
3101 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3105 PL_rs = newSVpvs("");
3106 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3107 tmps = (U8*)SvPVX(PL_rs);
3108 uvchr_to_utf8(tmps, rschar);
3109 SvCUR_set(PL_rs, UNISKIP(rschar));
3114 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3115 if (rschar & ~((U8)~0))
3116 PL_rs = &PL_sv_undef;
3117 else if (!rschar && numlen >= 2)
3118 PL_rs = newSVpvs("");
3120 char ch = (char)rschar;
3121 PL_rs = newSVpvn(&ch, 1);
3124 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3129 PL_unicode = parse_unicode_opts( (const char **)&s );
3130 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3138 while (*s && !isSPACE(*s)) ++s;
3139 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3151 forbid_setid('d', FALSE);
3154 /* -dt indicates to the debugger that threads will be used */
3155 if (*s == 't' && !isWORDCHAR(s[1])) {
3157 my_setenv("PERL5DB_THREADED", "1");
3160 /* The following permits -d:Mod to accepts arguments following an =
3161 in the fashion that -MSome::Mod does. */
3162 if (*s == ':' || *s == '=') {
3169 sv = newSVpvs("no Devel::");
3171 sv = newSVpvs("use Devel::");
3175 end = s + strlen(s);
3177 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3178 while(isWORDCHAR(*s) || *s==':') ++s;
3180 sv_catpvn(sv, start, end - start);
3182 sv_catpvn(sv, start, s-start);
3183 /* Don't use NUL as q// delimiter here, this string goes in the
3185 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3188 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3192 PL_perldb = PERLDB_ALL;
3199 forbid_setid('D', FALSE);
3201 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3202 #else /* !DEBUGGING */
3203 if (ckWARN_d(WARN_DEBUGGING))
3204 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3205 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3206 for (s++; isWORDCHAR(*s); s++) ;
3213 Safefree(PL_inplace);
3214 #if defined(__CYGWIN__) /* do backup extension automagically */
3215 if (*(s+1) == '\0') {
3216 PL_inplace = savepvs(".bak");
3219 #endif /* __CYGWIN__ */
3221 const char * const start = ++s;
3222 while (*s && !isSPACE(*s))
3225 PL_inplace = savepvn(start, s - start);
3229 if (*s == '-') /* Additional switches on #! line. */
3233 case 'I': /* -I handled both here and in parse_body() */
3234 forbid_setid('I', FALSE);
3236 while (*s && isSPACE(*s))
3241 /* ignore trailing spaces (possibly followed by other switches) */
3243 for (e = p; *e && !isSPACE(*e); e++) ;
3247 } while (*p && *p != '-');
3249 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3255 Perl_croak(aTHX_ "No directory specified for -I");
3261 SvREFCNT_dec(PL_ors_sv);
3267 PL_ors_sv = newSVpvs("\n");
3268 numlen = 3 + (*s == '0');
3269 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3273 if (RsPARA(PL_rs)) {
3274 PL_ors_sv = newSVpvs("\n\n");
3277 PL_ors_sv = newSVsv(PL_rs);
3282 forbid_setid('M', FALSE); /* XXX ? */
3285 forbid_setid('m', FALSE); /* XXX ? */
3290 const char *use = "use ";
3292 /* -M-foo == 'no foo' */
3293 /* Leading space on " no " is deliberate, to make both
3294 possibilities the same length. */
3295 if (*s == '-') { use = " no "; ++s; }
3296 sv = newSVpvn(use,4);
3298 /* We allow -M'Module qw(Foo Bar)' */
3299 while(isWORDCHAR(*s) || *s==':') {
3308 Perl_croak(aTHX_ "Module name required with -%c option",
3311 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3312 "contains single ':'",
3313 (int)(s - start), start, option);
3314 end = s + strlen(s);
3316 sv_catpvn(sv, start, end - start);
3317 if (option == 'm') {
3319 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3320 sv_catpvs( sv, " ()");
3323 sv_catpvn(sv, start, s-start);
3324 /* Use NUL as q''-delimiter. */
3325 sv_catpvs(sv, " split(/,/,q\0");
3327 sv_catpvn(sv, s, end - s);
3328 sv_catpvs(sv, "\0)");
3331 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3334 Perl_croak(aTHX_ "Missing argument to -%c", option);
3345 forbid_setid('s', FALSE);
3346 PL_doswitches = TRUE;
3351 #if defined(SILENT_NO_TAINT_SUPPORT)
3352 /* silently ignore */
3353 #elif defined(NO_TAINT_SUPPORT)
3354 Perl_croak_nocontext("This perl was compiled without taint support. "
3355 "Cowardly refusing to run with -t or -T flags");
3363 PL_do_undump = TRUE;
3373 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3374 PL_dowarn |= G_WARN_ON;
3379 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3380 if (!specialWARN(PL_compiling.cop_warnings))
3381 PerlMemShared_free(PL_compiling.cop_warnings);
3382 PL_compiling.cop_warnings = pWARN_ALL ;
3386 PL_dowarn = G_WARN_ALL_OFF;
3387 if (!specialWARN(PL_compiling.cop_warnings))
3388 PerlMemShared_free(PL_compiling.cop_warnings);
3389 PL_compiling.cop_warnings = pWARN_NONE ;
3396 if (s[0] == '-') /* Additional switches on #! line. */
3401 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3407 #ifdef ALTERNATE_SHEBANG
3408 case 'S': /* OS/2 needs -S on "extproc" line. */
3411 case 'e': case 'f': case 'x': case 'E':
3412 #ifndef ALTERNATE_SHEBANG
3416 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3419 "Unrecognized switch: -%.1s (-h will show valid options)",s
3429 PerlIO * PIO_stdout;
3431 const char * const level_str = "v" PERL_VERSION_STRING;
3432 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3433 #ifdef PERL_PATCHNUM
3435 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3436 static const char num [] = PERL_PATCHNUM "*";
3438 static const char num [] = PERL_PATCHNUM;
3441 const STRLEN num_len = sizeof(num)-1;
3442 /* A very advanced compiler would fold away the strnEQ
3443 and this whole conditional, but most (all?) won't do it.
3444 SV level could also be replaced by with preprocessor
3447 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3448 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3449 of the interp so it might contain format characters
3451 level = newSVpvn(num, num_len);
3453 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3457 SV* level = newSVpvn(level_str, level_len);
3458 #endif /* #ifdef PERL_PATCHNUM */
3459 PIO_stdout = PerlIO_stdout();
3460 PerlIO_printf(PIO_stdout,
3461 "\nThis is perl " STRINGIFY(PERL_REVISION)
3462 ", version " STRINGIFY(PERL_VERSION)
3463 ", subversion " STRINGIFY(PERL_SUBVERSION)
3464 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3466 SvREFCNT_dec_NN(level);
3468 #if defined(LOCAL_PATCH_COUNT)
3469 if (LOCAL_PATCH_COUNT > 0)
3470 PerlIO_printf(PIO_stdout,
3471 "\n(with %d registered patch%s, "
3472 "see perl -V for more detail)",
3474 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3477 PerlIO_printf(PIO_stdout,
3478 "\n\nCopyright 1987-2015, Larry Wall\n");
3480 PerlIO_printf(PIO_stdout,
3481 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3484 PerlIO_printf(PIO_stdout,
3485 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3486 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3489 PerlIO_printf(PIO_stdout,
3490 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3491 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3494 PerlIO_printf(PIO_stdout,
3495 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3498 PerlIO_printf(PIO_stdout,
3499 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3502 PerlIO_printf(PIO_stdout,
3503 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3506 PerlIO_printf(PIO_stdout,
3507 "WINCE port by Rainer Keuchel, 2001-2002\n"
3508 "Built on " __DATE__ " " __TIME__ "\n\n");
3511 #ifdef __SYMBIAN32__
3512 PerlIO_printf(PIO_stdout,
3513 "Symbian port by Nokia, 2004-2005\n");
3515 #ifdef BINARY_BUILD_NOTICE
3516 BINARY_BUILD_NOTICE;
3518 PerlIO_printf(PIO_stdout,
3520 Perl may be copied only under the terms of either the Artistic License or the\n\
3521 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3522 Complete documentation for Perl, including FAQ lists, should be found on\n\
3523 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3524 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3528 /* compliments of Tom Christiansen */
3530 /* unexec() can be found in the Gnu emacs distribution */
3531 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3534 #include <lib$routines.h>
3538 Perl_my_unexec(pTHX)
3541 SV * prog = newSVpv(BIN_EXP, 0);
3542 SV * file = newSVpv(PL_origfilename, 0);
3546 sv_catpvs(prog, "/perl");
3547 sv_catpvs(file, ".perldump");
3549 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3550 /* unexec prints msg to stderr in case of failure */
3551 PerlProc_exit(status);
3553 PERL_UNUSED_CONTEXT;
3555 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3556 # elif defined(WIN32) || defined(__CYGWIN__)
3557 Perl_croak_nocontext("dump is not supported");
3559 ABORT(); /* for use with undump */
3564 /* initialize curinterp */
3569 # define PERLVAR(prefix,var,type)
3570 # define PERLVARA(prefix,var,n,type)
3571 # if defined(PERL_IMPLICIT_CONTEXT)
3572 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3573 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3575 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3576 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3578 # include "intrpvar.h"
3584 # define PERLVAR(prefix,var,type)
3585 # define PERLVARA(prefix,var,n,type)
3586 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3587 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3588 # include "intrpvar.h"
3598 S_init_main_stash(pTHX)
3602 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3603 /* We know that the string "main" will be in the global shared string
3604 table, so it's a small saving to use it rather than allocate another
3606 PL_curstname = newSVpvs_share("main");
3607 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3608 /* If we hadn't caused another reference to "main" to be in the shared
3609 string table above, then it would be worth reordering these two,
3610 because otherwise all we do is delete "main" from it as a consequence
3611 of the SvREFCNT_dec, only to add it again with hv_name_set */
3612 SvREFCNT_dec(GvHV(gv));
3613 hv_name_set(PL_defstash, "main", 4, 0);
3614 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3616 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3618 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3619 GvMULTI_on(PL_incgv);
3620 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3621 SvREFCNT_inc_simple_void(PL_hintgv);
3622 GvMULTI_on(PL_hintgv);
3623 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3624 SvREFCNT_inc_simple_void(PL_defgv);
3625 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3626 SvREFCNT_inc_simple_void(PL_errgv);
3627 GvMULTI_on(PL_errgv);
3628 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3629 SvREFCNT_inc_simple_void(PL_replgv);
3630 GvMULTI_on(PL_replgv);
3631 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3632 #ifdef PERL_DONT_CREATE_GVSV
3633 (void)gv_SVadd(PL_errgv);
3635 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3637 SET_CURSTASH(PL_defstash);
3638 CopSTASH_set(&PL_compiling, PL_defstash);
3639 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3640 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3642 /* We must init $/ before switches are processed. */
3643 sv_setpvs(get_sv("/", GV_ADD), "\n");
3647 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3650 PerlIO *rsfp = NULL;
3654 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3657 PL_origfilename = savepvs("-e");
3660 /* if find_script() returns, it returns a malloc()-ed value */
3661 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3663 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3664 const char *s = scriptname + 8;
3666 fdscript = grok_atou(s, &e);
3670 * Tell apart "normal" usage of fdscript, e.g.
3671 * with bash on FreeBSD:
3672 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3673 * from usage in suidperl.
3674 * Does any "normal" usage leave garbage after the number???
3675 * Is it a mistake to use a similar /dev/fd/ construct for
3680 * Be supersafe and do some sanity-checks.
3681 * Still, can we be sure we got the right thing?
3684 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3687 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3689 scriptname = savepv(s + 1);
3690 Safefree(PL_origfilename);
3691 PL_origfilename = (char *)scriptname;
3696 CopFILE_free(PL_curcop);
3697 CopFILE_set(PL_curcop, PL_origfilename);
3698 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3699 scriptname = (char *)"";
3700 if (fdscript >= 0) {
3701 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3703 else if (!*scriptname) {
3704 forbid_setid(0, *suidscript);
3708 #ifdef FAKE_BIT_BUCKET
3709 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3710 * is called) and still have the "-e" work. (Believe it or not,
3711 * a /dev/null is required for the "-e" to work because source
3712 * filter magic is used to implement it. ) This is *not* a general
3713 * replacement for a /dev/null. What we do here is create a temp
3714 * file (an empty file), open up that as the script, and then
3715 * immediately close and unlink it. Close enough for jazz. */
3716 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3717 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3718 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3719 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3720 FAKE_BIT_BUCKET_TEMPLATE
3722 const char * const err = "Failed to create a fake bit bucket";
3723 if (strEQ(scriptname, BIT_BUCKET)) {
3724 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3725 int old_umask = umask(0600);
3726 int tmpfd = mkstemp(tmpname);
3729 scriptname = tmpname;
3732 Perl_croak(aTHX_ err);
3735 scriptname = mktemp(tmpname);
3737 Perl_croak(aTHX_ err);
3742 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3743 #ifdef FAKE_BIT_BUCKET
3744 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3745 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3746 && strlen(scriptname) == sizeof(tmpname) - 1) {
3749 scriptname = BIT_BUCKET;
3753 /* PSz 16 Sep 03 Keep neat error message */
3755 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3757 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3758 CopFILE(PL_curcop), Strerror(errno));
3760 fd = PerlIO_fileno(rsfp);
3761 #if defined(HAS_FCNTL) && defined(F_SETFD)
3763 /* ensure close-on-exec */
3764 if (fcntl(fd, F_SETFD, 1) < 0) {
3765 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3766 CopFILE(PL_curcop), Strerror(errno));
3772 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3773 && S_ISDIR(tmpstatbuf.st_mode)))
3774 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3782 * I_SYSSTATVFS HAS_FSTATVFS
3784 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3785 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3786 * here so that metaconfig picks them up. */
3789 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3790 /* Don't even need this function. */
3793 S_validate_suid(pTHX_ PerlIO *rsfp)
3795 const Uid_t my_uid = PerlProc_getuid();
3796 const Uid_t my_euid = PerlProc_geteuid();
3797 const Gid_t my_gid = PerlProc_getgid();
3798 const Gid_t my_egid = PerlProc_getegid();
3800 PERL_ARGS_ASSERT_VALIDATE_SUID;
3802 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3804 int fd = PerlIO_fileno(rsfp);
3806 Perl_croak(aTHX_ "Illegal suidscript");
3808 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3809 Perl_croak(aTHX_ "Illegal suidscript");
3812 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3814 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3817 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3818 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3819 /* not set-id, must be wrapped */
3822 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3825 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3830 PERL_ARGS_ASSERT_FIND_BEGINNING;
3832 /* skip forward in input to the real script? */
3835 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3836 Perl_croak(aTHX_ "No Perl script found in input\n");
3838 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3839 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3840 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3842 while (*s == ' ' || *s == '\t') s++;
3844 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3845 || s2[-1] == '_') s2--;
3846 if (strnEQ(s2-4,"perl",4))
3847 while ((s = moreswitches(s)))
3856 /* no need to do anything here any more if we don't
3858 #ifndef NO_TAINT_SUPPORT
3859 const Uid_t my_uid = PerlProc_getuid();
3860 const Uid_t my_euid = PerlProc_geteuid();
3861 const Gid_t my_gid = PerlProc_getgid();
3862 const Gid_t my_egid = PerlProc_getegid();
3864 PERL_UNUSED_CONTEXT;
3866 /* Should not happen: */
3867 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3868 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3872 * Should go by suidscript, not uid!=euid: why disallow
3873 * system("ls") in scripts run from setuid things?
3874 * Or, is this run before we check arguments and set suidscript?
3875 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3876 * (We never have suidscript, can we be sure to have fdscript?)
3877 * Or must then go by UID checks? See comments in forbid_setid also.
3881 /* This is used very early in the lifetime of the program,
3882 * before even the options are parsed, so PL_tainting has
3883 * not been initialized properly. */
3885 Perl_doing_taint(int argc, char *argv[], char *envp[])
3887 #ifndef PERL_IMPLICIT_SYS
3888 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3889 * before we have an interpreter-- and the whole point of this
3890 * function is to be called at such an early stage. If you are on
3891 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3892 * "tainted because running with altered effective ids', you'll
3893 * have to add your own checks somewhere in here. The two most
3894 * known samples of 'implicitness' are Win32 and NetWare, neither
3895 * of which has much of concept of 'uids'. */
3896 Uid_t uid = PerlProc_getuid();
3897 Uid_t euid = PerlProc_geteuid();
3898 Gid_t gid = PerlProc_getgid();
3899 Gid_t egid = PerlProc_getegid();
3906 if (uid && (euid != uid || egid != gid))
3908 #endif /* !PERL_IMPLICIT_SYS */
3909 /* This is a really primitive check; environment gets ignored only
3910 * if -T are the first chars together; otherwise one gets
3911 * "Too late" message. */
3912 if ( argc > 1 && argv[1][0] == '-'
3913 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3918 /* Passing the flag as a single char rather than a string is a slight space
3919 optimisation. The only message that isn't /^-.$/ is
3920 "program input from stdin", which is substituted in place of '\0', which
3921 could never be a command line flag. */
3923 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3925 char string[3] = "-x";
3926 const char *message = "program input from stdin";
3928 PERL_UNUSED_CONTEXT;
3934 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3935 if (PerlProc_getuid() != PerlProc_geteuid())
3936 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3937 if (PerlProc_getgid() != PerlProc_getegid())
3938 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3939 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3941 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
3945 Perl_init_dbargs(pTHX)
3947 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3952 /* Someone has already created it.
3953 It might have entries, and if we just turn off AvREAL(), they will
3954 "leak" until global destruction. */
3956 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
3957 Perl_croak(aTHX_ "Cannot set tied @DB::args");
3959 AvREIFY_only(PL_dbargs);
3963 Perl_init_debugger(pTHX)
3965 HV * const ostash = PL_curstash;
3968 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
3970 Perl_init_dbargs(aTHX);
3971 PL_DBgv = MUTABLE_GV(
3972 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3974 PL_DBline = MUTABLE_GV(
3975 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
3977 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
3978 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
3980 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
3981 if (!SvIOK(PL_DBsingle))
3982 sv_setiv(PL_DBsingle, 0);
3983 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3984 mg->mg_private = DBVARMG_SINGLE;
3985 SvSETMAGIC(PL_DBsingle);
3987 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
3988 if (!SvIOK(PL_DBtrace))
3989 sv_setiv(PL_DBtrace, 0);
3990 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3991 mg->mg_private = DBVARMG_TRACE;
3992 SvSETMAGIC(PL_DBtrace);
3994 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
3995 if (!SvIOK(PL_DBsignal))
3996 sv_setiv(PL_DBsignal, 0);
3997 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
3998 mg->mg_private = DBVARMG_SIGNAL;
3999 SvSETMAGIC(PL_DBsignal);
4001 SvREFCNT_dec(PL_curstash);
4002 PL_curstash = ostash;
4005 #ifndef STRESS_REALLOC
4006 #define REASONABLE(size) (size)
4007 #define REASONABLE_but_at_least(size,min) (size)
4009 #define REASONABLE(size) (1) /* unreasonable */
4010 #define REASONABLE_but_at_least(size,min) (min)
4014 Perl_init_stacks(pTHX)
4016 /* start with 128-item stack and 8K cxstack */
4017 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4018 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4019 PL_curstackinfo->si_type = PERLSI_MAIN;
4020 PL_curstack = PL_curstackinfo->si_stack;
4021 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4023 PL_stack_base = AvARRAY(PL_curstack);
4024 PL_stack_sp = PL_stack_base;
4025 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4027 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4030 PL_tmps_max = REASONABLE(128);
4032 Newx(PL_markstack,REASONABLE(32),I32);
4033 PL_markstack_ptr = PL_markstack;
4034 PL_markstack_max = PL_markstack + REASONABLE(32);
4038 Newx(PL_scopestack,REASONABLE(32),I32);
4040 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4042 PL_scopestack_ix = 0;
4043 PL_scopestack_max = REASONABLE(32);
4045 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4046 PL_savestack_ix = 0;
4047 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4055 while (PL_curstackinfo->si_next)
4056 PL_curstackinfo = PL_curstackinfo->si_next;
4057 while (PL_curstackinfo) {
4058 PERL_SI *p = PL_curstackinfo->si_prev;
4059 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4060 Safefree(PL_curstackinfo->si_cxstack);
4061 Safefree(PL_curstackinfo);
4062 PL_curstackinfo = p;
4064 Safefree(PL_tmps_stack);
4065 Safefree(PL_markstack);
4066 Safefree(PL_scopestack);
4068 Safefree(PL_scopestack_name);
4070 Safefree(PL_savestack);
4074 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4076 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4077 AV *const isa = GvAVn(gv);
4080 PERL_ARGS_ASSERT_POPULATE_ISA;
4082 if(AvFILLp(isa) != -1)
4085 /* NOTE: No support for tied ISA */
4087 va_start(args, len);
4089 const char *const parent = va_arg(args, const char*);
4094 parent_len = va_arg(args, size_t);
4096 /* Arguments are supplied with a trailing :: */
4097 assert(parent_len > 2);
4098 assert(parent[parent_len - 1] == ':');
4099 assert(parent[parent_len - 2] == ':');
4100 av_push(isa, newSVpvn(parent, parent_len - 2));
4101 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4108 S_init_predump_symbols(pTHX)
4113 sv_setpvs(get_sv("\"", GV_ADD), " ");
4114 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4117 /* Historically, PVIOs were blessed into IO::Handle, unless
4118 FileHandle was loaded, in which case they were blessed into
4119 that. Action at a distance.
4120 However, if we simply bless into IO::Handle, we break code
4121 that assumes that PVIOs will have (among others) a seek
4122 method. IO::File inherits from IO::Handle and IO::Seekable,
4123 and provides the needed methods. But if we simply bless into
4124 it, then we break code that assumed that by loading
4125 IO::Handle, *it* would work.
4126 So a compromise is to set up the correct @IO::File::ISA,
4127 so that code that does C<use IO::Handle>; will still work.
4130 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4131 STR_WITH_LEN("IO::Handle::"),
4132 STR_WITH_LEN("IO::Seekable::"),
4133 STR_WITH_LEN("Exporter::"),
4136 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4137 GvMULTI_on(PL_stdingv);
4138 io = GvIOp(PL_stdingv);
4139 IoTYPE(io) = IoTYPE_RDONLY;
4140 IoIFP(io) = PerlIO_stdin();
4141 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4143 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4145 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4148 IoTYPE(io) = IoTYPE_WRONLY;
4149 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4151 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4153 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4155 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4156 GvMULTI_on(PL_stderrgv);
4157 io = GvIOp(PL_stderrgv);
4158 IoTYPE(io) = IoTYPE_WRONLY;
4159 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4160 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4162 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4164 PL_statname = newSVpvs(""); /* last filename we did stat on */
4168 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4170 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4172 argc--,argv++; /* skip name of script */
4173 if (PL_doswitches) {
4174 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4178 if (argv[0][1] == '-' && !argv[0][2]) {
4182 if ((s = strchr(argv[0], '='))) {
4183 const char *const start_name = argv[0] + 1;
4184 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4185 TRUE, SVt_PV)), s + 1);
4188 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4191 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4192 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4193 GvMULTI_on(PL_argvgv);
4194 av_clear(GvAVn(PL_argvgv));
4195 for (; argc > 0; argc--,argv++) {
4196 SV * const sv = newSVpv(argv[0],0);
4197 av_push(GvAV(PL_argvgv),sv);
4198 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4199 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4202 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4203 (void)sv_utf8_decode(sv);
4207 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4208 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4209 "-i used with no filenames on the command line, "
4210 "reading from STDIN");
4214 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4221 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4223 PL_toptarget = newSV_type(SVt_PVIV);
4224 sv_setpvs(PL_toptarget, "");
4225 PL_bodytarget = newSV_type(SVt_PVIV);
4226 sv_setpvs(PL_bodytarget, "");
4227 PL_formtarget = PL_bodytarget;
4231 init_argv_symbols(argc,argv);
4233 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4234 sv_setpv(GvSV(tmpgv),PL_origfilename);
4236 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4238 bool env_is_not_environ;
4239 SvREFCNT_inc_simple_void_NN(PL_envgv);
4240 GvMULTI_on(PL_envgv);
4241 hv = GvHVn(PL_envgv);
4242 hv_magic(hv, NULL, PERL_MAGIC_env);
4244 #ifdef USE_ENVIRON_ARRAY
4245 /* Note that if the supplied env parameter is actually a copy
4246 of the global environ then it may now point to free'd memory
4247 if the environment has been modified since. To avoid this
4248 problem we treat env==NULL as meaning 'use the default'
4252 env_is_not_environ = env != environ;
4253 if (env_is_not_environ
4254 # ifdef USE_ITHREADS
4255 && PL_curinterp == aTHX
4264 for (; *env; env++) {
4267 if (!(s = strchr(old_var,'=')) || s == old_var)
4270 #if defined(MSDOS) && !defined(DJGPP)
4272 (void)strupr(old_var);
4275 sv = newSVpv(s+1, 0);
4276 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4277 if (env_is_not_environ)
4281 #endif /* USE_ENVIRON_ARRAY */
4282 #endif /* !PERL_MICRO */
4286 /* touch @F array to prevent spurious warnings 20020415 MJD */
4288 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4293 S_init_perllib(pTHX)
4296 const char *perl5lib = NULL;
4299 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4303 if (!TAINTING_get) {
4305 perl5lib = PerlEnv_getenv("PERL5LIB");
4307 * It isn't possible to delete an environment variable with
4308 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4309 * case we treat PERL5LIB as undefined if it has a zero-length value.
4311 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4312 if (perl5lib && *perl5lib != '\0')
4316 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4318 s = PerlEnv_getenv("PERLLIB");
4320 incpush_use_sep(s, 0, 0);
4323 /* Treat PERL5?LIB as a possible search list logical name -- the
4324 * "natural" VMS idiom for a Unix path string. We allow each
4325 * element to be a set of |-separated directories for compatibility.
4329 if (my_trnlnm("PERL5LIB",buf,0))
4331 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4332 } while (my_trnlnm("PERL5LIB",buf,++idx));
4334 while (my_trnlnm("PERLLIB",buf,idx++))
4335 incpush_use_sep(buf, 0, 0);
4340 #ifndef PERL_IS_MINIPERL
4341 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4342 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4344 /* Use the ~-expanded versions of APPLLIB (undocumented),
4345 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4348 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4349 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4353 /* sitearch is always relative to sitelib on Windows for
4354 * DLL-based path intuition to work correctly */
4355 # if !defined(WIN32)
4356 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4357 INCPUSH_CAN_RELOCATE);
4363 /* this picks up sitearch as well */
4364 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4366 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4368 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4372 #ifdef PERL_VENDORARCH_EXP
4373 /* vendorarch is always relative to vendorlib on Windows for
4374 * DLL-based path intuition to work correctly */
4375 # if !defined(WIN32)
4376 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4377 INCPUSH_CAN_RELOCATE);
4381 #ifdef PERL_VENDORLIB_EXP
4383 /* this picks up vendorarch as well */
4384 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4386 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4388 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4389 INCPUSH_CAN_RELOCATE);
4394 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4398 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4402 s = win32_get_privlib(PERL_FS_VERSION, &len);
4404 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4407 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4409 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4413 #ifdef PERL_OTHERLIBDIRS
4414 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4415 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4416 |INCPUSH_CAN_RELOCATE);
4419 if (!TAINTING_get) {
4422 * It isn't possible to delete an environment variable with
4423 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4424 * case we treat PERL5LIB as undefined if it has a zero-length value.
4426 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4427 if (perl5lib && *perl5lib != '\0')
4431 incpush_use_sep(perl5lib, 0,
4432 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4434 /* Treat PERL5?LIB as a possible search list logical name -- the
4435 * "natural" VMS idiom for a Unix path string. We allow each
4436 * element to be a set of |-separated directories for compatibility.
4440 if (my_trnlnm("PERL5LIB",buf,0))
4442 incpush_use_sep(buf, 0,
4443 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4444 } while (my_trnlnm("PERL5LIB",buf,++idx));
4448 /* Use the ~-expanded versions of APPLLIB (undocumented),
4449 SITELIB and VENDORLIB for older versions
4452 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4453 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4456 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4457 /* Search for version-specific dirs below here */
4458 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4459 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4463 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4464 /* Search for version-specific dirs below here */
4465 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4466 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4469 #ifdef PERL_OTHERLIBDIRS
4470 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4471 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4472 |INCPUSH_CAN_RELOCATE);
4474 #endif /* !PERL_IS_MINIPERL */
4477 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4480 #if defined(DOSISH) || defined(__SYMBIAN32__)
4481 # define PERLLIB_SEP ';'
4484 # define PERLLIB_SEP '|'
4486 # define PERLLIB_SEP ':'
4489 #ifndef PERLLIB_MANGLE
4490 # define PERLLIB_MANGLE(s,n) (s)
4493 #ifndef PERL_IS_MINIPERL
4494 /* Push a directory onto @INC if it exists.
4495 Generate a new SV if we do this, to save needing to copy the SV we push
4498 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4502 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4504 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4505 S_ISDIR(tmpstatbuf.st_mode)) {
4507 dir = newSVsv(stem);
4509 /* Truncate dir back to stem. */
4510 SvCUR_set(dir, SvCUR(stem));
4517 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4519 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4522 PERL_ARGS_ASSERT_MAYBERELOCATE;
4525 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4526 defined to so something (in os2/os2.c), but the code has been
4527 this way, ignoring any possible changed of length, since
4528 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4530 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4536 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4538 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4539 sv_usepvn(libdir,unix,len);
4542 PerlIO_printf(Perl_error_log,
4543 "Failed to unixify @INC element \"%s\"\n",
4544 SvPV_nolen_const(libdir));
4548 /* Do the if() outside the #ifdef to avoid warnings about an unused
4551 #ifdef PERL_RELOCATABLE_INC
4553 * Relocatable include entries are marked with a leading .../
4556 * 0: Remove that leading ".../"
4557 * 1: Remove trailing executable name (anything after the last '/')
4558 * from the perl path to give a perl prefix
4560 * While the @INC element starts "../" and the prefix ends with a real
4561 * directory (ie not . or ..) chop that real directory off the prefix
4562 * and the leading "../" from the @INC element. ie a logical "../"
4564 * Finally concatenate the prefix and the remainder of the @INC element
4565 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4566 * generates /usr/local/lib/perl5
4568 const char *libpath = SvPVX(libdir);
4569 STRLEN libpath_len = SvCUR(libdir);
4570 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4572 SV * const caret_X = get_sv("\030", 0);
4573 /* Going to use the SV just as a scratch buffer holding a C
4579 /* $^X is *the* source of taint if tainting is on, hence
4580 SvPOK() won't be true. */
4582 assert(SvPOKp(caret_X));
4583 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4585 /* Firstly take off the leading .../
4586 If all else fail we'll do the paths relative to the current
4588 sv_chop(libdir, libpath + 4);
4589 /* Don't use SvPV as we're intentionally bypassing taining,
4590 mortal copies that the mg_get of tainting creates, and
4591 corruption that seems to come via the save stack.
4592 I guess that the save stack isn't correctly set up yet. */
4593 libpath = SvPVX(libdir);
4594 libpath_len = SvCUR(libdir);
4596 /* This would work more efficiently with memrchr, but as it's
4597 only a GNU extension we'd need to probe for it and
4598 implement our own. Not hard, but maybe not worth it? */
4600 prefix = SvPVX(prefix_sv);
4601 lastslash = strrchr(prefix, '/');
4603 /* First time in with the *lastslash = '\0' we just wipe off
4604 the trailing /perl from (say) /usr/foo/bin/perl
4608 while ((*lastslash = '\0'), /* Do that, come what may. */
4609 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4610 && (lastslash = strrchr(prefix, '/')))) {
4611 if (lastslash[1] == '\0'
4612 || (lastslash[1] == '.'
4613 && (lastslash[2] == '/' /* ends "/." */
4614 || (lastslash[2] == '/'
4615 && lastslash[3] == '/' /* or "/.." */
4617 /* Prefix ends "/" or "/." or "/..", any of which
4618 are fishy, so don't do any more logical cleanup.
4622 /* Remove leading "../" from path */
4625 /* Next iteration round the loop removes the last
4626 directory name from prefix by writing a '\0' in
4627 the while clause. */
4629 /* prefix has been terminated with a '\0' to the correct
4630 length. libpath points somewhere into the libdir SV.
4631 We need to join the 2 with '/' and drop the result into
4633 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4634 SvREFCNT_dec(libdir);
4635 /* And this is the new libdir. */
4638 (PerlProc_getuid() != PerlProc_geteuid() ||
4639 PerlProc_getgid() != PerlProc_getegid())) {
4640 /* Need to taint relocated paths if running set ID */
4641 SvTAINTED_on(libdir);
4644 SvREFCNT_dec(prefix_sv);
4652 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4654 #ifndef PERL_IS_MINIPERL
4655 const U8 using_sub_dirs
4656 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4657 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4658 const U8 add_versioned_sub_dirs
4659 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4660 const U8 add_archonly_sub_dirs
4661 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4662 #ifdef PERL_INC_VERSION_LIST
4663 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4666 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4667 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4668 AV *const inc = GvAVn(PL_incgv);
4670 PERL_ARGS_ASSERT_INCPUSH;
4673 /* Could remove this vestigial extra block, if we don't mind a lot of
4674 re-indenting diff noise. */
4676 SV *const libdir = mayberelocate(dir, len, flags);
4677 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4678 arranged to unshift #! line -I onto the front of @INC. However,
4679 -I can add version and architecture specific libraries, and they
4680 need to go first. The old code assumed that it was always
4681 pushing. Hence to make it work, need to push the architecture
4682 (etc) libraries onto a temporary array, then "unshift" that onto
4683 the front of @INC. */
4684 #ifndef PERL_IS_MINIPERL
4685 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4688 * BEFORE pushing libdir onto @INC we may first push version- and
4689 * archname-specific sub-directories.
4691 if (using_sub_dirs) {
4692 SV *subdir = newSVsv(libdir);
4693 #ifdef PERL_INC_VERSION_LIST
4694 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4695 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4696 const char * const *incver;
4699 if (add_versioned_sub_dirs) {
4700 /* .../version/archname if -d .../version/archname */
4701 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4702 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4704 /* .../version if -d .../version */
4705 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4706 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4709 #ifdef PERL_INC_VERSION_LIST
4711 for (incver = incverlist; *incver; incver++) {
4712 /* .../xxx if -d .../xxx */
4713 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4714 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4719 if (add_archonly_sub_dirs) {
4720 /* .../archname if -d .../archname */
4721 sv_catpvs(subdir, "/" ARCHNAME);
4722 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4726 assert (SvREFCNT(subdir) == 1);
4727 SvREFCNT_dec(subdir);
4729 #endif /* !PERL_IS_MINIPERL */
4730 /* finally add this lib directory at the end of @INC */
4732 #ifdef PERL_IS_MINIPERL
4733 const Size_t extra = 0;
4735 Size_t extra = av_tindex(av) + 1;
4737 av_unshift(inc, extra + push_basedir);
4739 av_store(inc, extra, libdir);
4740 #ifndef PERL_IS_MINIPERL
4742 /* av owns a reference, av_store() expects to be donated a
4743 reference, and av expects to be sane when it's cleared.
4744 If I wanted to be naughty and wrong, I could peek inside the
4745 implementation of av_clear(), realise that it uses
4746 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4747 and so directly steal from it (with a memcpy() to inc, and
4748 then memset() to NULL them out. But people copy code from the
4749 core expecting it to be best practise, so let's use the API.
4750 Although studious readers will note that I'm not checking any
4752 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4757 else if (push_basedir) {
4758 av_push(inc, libdir);
4761 if (!push_basedir) {
4762 assert (SvREFCNT(libdir) == 1);
4763 SvREFCNT_dec(libdir);
4769 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4773 /* This logic has been broken out from S_incpush(). It may be possible to
4776 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4778 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4779 * argument to incpush_use_sep. This allows creation of relocatable
4780 * Perl distributions that patch the binary at install time. Those
4781 * distributions will have to provide their own relocation tools; this
4782 * is not a feature otherwise supported by core Perl.
4784 #ifndef PERL_RELOCATABLE_INCPUSH
4791 /* Break at all separators */
4792 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4794 /* skip any consecutive separators */
4796 /* Uncomment the next line for PATH semantics */
4797 /* But you'll need to write tests */
4798 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4800 incpush(p, (STRLEN)(s - p), flags);
4805 incpush(p, (STRLEN)(end - p), flags);
4810 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4813 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4819 PERL_ARGS_ASSERT_CALL_LIST;
4821 while (av_tindex(paramList) >= 0) {
4822 cv = MUTABLE_CV(av_shift(paramList));
4824 if (paramList == PL_beginav) {
4825 /* save PL_beginav for compiler */
4826 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4828 else if (paramList == PL_checkav) {
4829 /* save PL_checkav for compiler */
4830 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4832 else if (paramList == PL_unitcheckav) {
4833 /* save PL_unitcheckav for compiler */
4834 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4844 (void)SvPV_const(atsv, len);
4846 PL_curcop = &PL_compiling;
4847 CopLINE_set(PL_curcop, oldline);
4848 if (paramList == PL_beginav)
4849 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4851 Perl_sv_catpvf(aTHX_ atsv,
4852 "%s failed--call queue aborted",
4853 paramList == PL_checkav ? "CHECK"
4854 : paramList == PL_initav ? "INIT"
4855 : paramList == PL_unitcheckav ? "UNITCHECK"
4857 while (PL_scopestack_ix > oldscope)
4860 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4867 /* my_exit() was called */
4868 while (PL_scopestack_ix > oldscope)
4871 SET_CURSTASH(PL_defstash);
4872 PL_curcop = &PL_compiling;
4873 CopLINE_set(PL_curcop, oldline);
4876 NOT_REACHED; /* NOTREACHED */
4879 PL_curcop = &PL_compiling;
4880 CopLINE_set(PL_curcop, oldline);
4883 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4892 Perl_my_exit(pTHX_ U32 status)
4894 if (PL_exit_flags & PERL_EXIT_ABORT) {
4897 if (PL_exit_flags & PERL_EXIT_WARN) {
4898 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4899 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4900 PL_exit_flags &= ~PERL_EXIT_ABORT;
4910 STATUS_EXIT_SET(status);
4917 Perl_my_failure_exit(pTHX)
4920 /* We have been called to fall on our sword. The desired exit code
4921 * should be already set in STATUS_UNIX, but could be shifted over
4922 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4925 * If an error code has not been set, then force the issue.
4927 if (MY_POSIX_EXIT) {
4929 /* According to the die_exit.t tests, if errno is non-zero */
4930 /* It should be used for the error status. */
4932 if (errno == EVMSERR) {
4933 STATUS_NATIVE = vaxc$errno;
4936 /* According to die_exit.t tests, if the child_exit code is */
4937 /* also zero, then we need to exit with a code of 255 */
4938 if ((errno != 0) && (errno < 256))
4939 STATUS_UNIX_EXIT_SET(errno);
4940 else if (STATUS_UNIX < 255) {
4941 STATUS_UNIX_EXIT_SET(255);
4946 /* The exit code could have been set by $? or vmsish which
4947 * means that it may not have fatal set. So convert
4948 * success/warning codes to fatal with out changing
4949 * the POSIX status code. The severity makes VMS native
4950 * status handling work, while UNIX mode programs use the
4951 * the POSIX exit codes.
4953 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4954 STATUS_NATIVE &= STS$M_COND_ID;
4955 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4959 /* Traditionally Perl on VMS always expects a Fatal Error. */
4960 if (vaxc$errno & 1) {
4962 /* So force success status to failure */
4963 if (STATUS_NATIVE & 1)
4968 STATUS_UNIX = EINTR; /* In case something cares */
4973 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4975 /* Encode the severity code */
4976 severity = STATUS_NATIVE & STS$M_SEVERITY;
4977 STATUS_UNIX = (severity ? severity : 1) << 8;
4979 /* Perl expects this to be a fatal error */
4980 if (severity != STS$K_SEVERE)
4989 STATUS_UNIX_SET(errno);
4991 exitstatus = STATUS_UNIX >> 8;
4992 if (exitstatus & 255)
4993 STATUS_UNIX_SET(exitstatus);
4995 STATUS_UNIX_SET(255);
4998 if (PL_exit_flags & PERL_EXIT_ABORT) {
5001 if (PL_exit_flags & PERL_EXIT_WARN) {
5002 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5003 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5004 PL_exit_flags &= ~PERL_EXIT_ABORT;
5010 S_my_exit_jump(pTHX)
5013 SvREFCNT_dec(PL_e_script);
5017 POPSTACK_TO(PL_mainstack);
5025 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5027 const char * const p = SvPVX_const(PL_e_script);
5028 const char *nl = strchr(p, '\n');
5030 PERL_UNUSED_ARG(idx);
5031 PERL_UNUSED_ARG(maxlen);
5033 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5035 filter_del(read_e_script);
5038 sv_catpvn(buf_sv, p, nl-p);
5039 sv_chop(PL_e_script, nl);
5043 /* removes boilerplate code at the end of each boot_Module xsub */
5045 Perl_xs_boot_epilog(pTHX_ const U32 ax)
5048 call_list(PL_scopestack_ix, PL_unitcheckav);
5054 * c-indentation-style: bsd
5056 * indent-tabs-mode: nil
5059 * ex: set ts=8 sts=4 sw=4 et: