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 * 2013, 2014, 2015, 2016 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);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 perl_construct(pTHXx)
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
226 PL_perl_destruct_level = 1;
228 PERL_UNUSED_ARG(my_perl);
229 if (PL_perl_destruct_level > 0)
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
234 #ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
240 SvREADONLY_on(&PL_sv_placeholder);
241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
244 #ifdef PERL_USES_PL_PIDSTATUS
245 PL_pidstatus = newHV();
248 PL_rs = newSVpvs("\n");
259 #if defined(LOCAL_PATCH_COUNT)
260 PL_localpatches = local_patches; /* For possible -v */
263 #ifdef HAVE_INTERP_INTERN
267 PerlIO_init(aTHX); /* Hook to IO system */
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
271 PL_errors = newSVpvs("");
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
279 PL_regex_pad = AvARRAY(PL_regex_padav);
280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
282 #ifdef USE_REENTRANT_API
283 Perl_reentrant_init(aTHX);
285 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
297 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
310 # ifdef USE_ENVIRON_ARRAY
311 PL_origenviron = environ;
315 /* Use sysconf(_SC_CLK_TCK) if available, if not
316 * available or if the sysconf() fails, use the HZ.
317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
319 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
325 PL_stashcache = newHV();
327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
330 if (!PL_mmap_page_size) {
331 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 SETERRNO(0, SS_NORMAL);
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339 if ((long) PL_mmap_page_size < 0) {
341 SV * const error = ERRSV;
342 SvUPGRADE(error, SVt_PV);
343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
350 # ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
353 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
362 #endif /* HAS_MMAP */
364 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373 PL_registered_mros = newHV();
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
377 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
378 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
379 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
380 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
381 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
382 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
383 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
384 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
385 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
386 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
387 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
388 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
389 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
390 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
391 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
392 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
393 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
394 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
395 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
396 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
402 =for apidoc nothreadhook
404 Stub that provides thread hook for perl_destruct when there are
411 Perl_nothreadhook(pTHX)
417 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419 Perl_dump_sv_child(pTHX_ SV *sv)
422 const int sock = PL_dumper_fd;
423 const int debug_fd = PerlIO_fileno(Perl_debug_log);
424 union control_un control;
427 struct cmsghdr *cmptr;
429 unsigned char buffer[256];
431 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433 if(sock == -1 || debug_fd == -1)
436 PerlIO_flush(Perl_debug_log);
438 /* All these shenanigans are to pass a file descriptor over to our child for
439 it to dump out to. We can't let it hold open the file descriptor when it
440 forks, as the file descriptor it will dump to can turn out to be one end
441 of pipe that some other process will wait on for EOF. (So as it would
442 be open, the wait would be forever.) */
444 msg.msg_control = control.control;
445 msg.msg_controllen = sizeof(control.control);
446 /* We're a connected socket so we don't need a destination */
452 cmptr = CMSG_FIRSTHDR(&msg);
453 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
454 cmptr->cmsg_level = SOL_SOCKET;
455 cmptr->cmsg_type = SCM_RIGHTS;
456 *((int *)CMSG_DATA(cmptr)) = 1;
458 vec[0].iov_base = (void*)&sv;
459 vec[0].iov_len = sizeof(sv);
460 got = sendmsg(sock, &msg, 0);
463 perror("Debug leaking scalars parent sendmsg failed");
466 if(got < sizeof(sv)) {
467 perror("Debug leaking scalars parent short sendmsg");
471 /* Return protocol is
473 unsigned char: length of location string (0 for empty)
474 unsigned char*: string (not terminated)
476 vec[0].iov_base = (void*)&returned_errno;
477 vec[0].iov_len = sizeof(returned_errno);
478 vec[1].iov_base = buffer;
481 got = readv(sock, vec, 2);
484 perror("Debug leaking scalars parent read failed");
485 PerlIO_flush(PerlIO_stderr());
488 if(got < sizeof(returned_errno) + 1) {
489 perror("Debug leaking scalars parent short read");
490 PerlIO_flush(PerlIO_stderr());
495 got = read(sock, buffer + 1, *buffer);
497 perror("Debug leaking scalars parent read 2 failed");
498 PerlIO_flush(PerlIO_stderr());
503 perror("Debug leaking scalars parent short read 2");
504 PerlIO_flush(PerlIO_stderr());
509 if (returned_errno || *buffer) {
510 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
511 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
512 returned_errno, Strerror(returned_errno));
518 =for apidoc perl_destruct
520 Shuts down a Perl interpreter. See L<perlembed>.
529 VOL signed char destruct_level; /* see possible values in intrpvar.h */
531 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538 PERL_UNUSED_ARG(my_perl);
541 assert(PL_scopestack_ix == 1);
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
546 destruct_level = PL_perl_destruct_level;
547 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
552 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
556 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
562 if (destruct_level < i) destruct_level = i;
564 #ifdef PERL_TRACK_MEMPOOL
565 /* RT #114496, for perl_free */
566 PL_perl_destruct_level = i;
572 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
578 if (PL_endav && !PL_minus_c) {
579 PERL_SET_PHASE(PERL_PHASE_END);
580 call_list(PL_scopestack_ix, PL_endav);
586 assert(PL_scopestack_ix == 0);
588 /* Need to flush since END blocks can produce output */
589 /* flush stdout separately, since we can identify it */
592 PerlIO *stdo = PerlIO_stdout();
593 if (*stdo && PerlIO_flush(stdo)) {
594 PerlIO_restore_errno(stdo);
595 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
604 #ifdef PERL_TRACE_OPS
605 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
607 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
610 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
614 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
615 for (i = 0; i <= OP_max; ++i) {
616 if (PL_op_exec_cnt[i])
617 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
619 /* Utility slot for easily doing little tracing experiments in the runloop: */
620 if (PL_op_exec_cnt[OP_max+1] != 0)
621 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
622 PerlIO_printf(Perl_debug_log, "\n");
627 if (PL_threadhook(aTHX)) {
628 /* Threads hook has vetoed further cleanup */
629 PL_veto_cleanup = TRUE;
633 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
634 if (destruct_level != 0) {
635 /* Fork here to create a child. Our child's job is to preserve the
636 state of scalars prior to destruction, so that we can instruct it
637 to dump any scalars that we later find have leaked.
638 There's no subtlety in this code - it assumes POSIX, and it doesn't
642 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
643 perror("Debug leaking scalars socketpair failed");
649 perror("Debug leaking scalars fork failed");
653 /* We are the child */
654 const int sock = fd[1];
655 const int debug_fd = PerlIO_fileno(Perl_debug_log);
658 /* Our success message is an integer 0, and a char 0 */
659 static const char success[sizeof(int) + 1] = {0};
663 /* We need to close all other file descriptors otherwise we end up
664 with interesting hangs, where the parent closes its end of a
665 pipe, and sits waiting for (another) child to terminate. Only
666 that child never terminates, because it never gets EOF, because
667 we also have the far end of the pipe open. We even need to
668 close the debugging fd, because sometimes it happens to be one
669 end of a pipe, and a process is waiting on the other end for
670 EOF. Normally it would be closed at some point earlier in
671 destruction, but if we happen to cause the pipe to remain open,
672 EOF never occurs, and we get an infinite hang. Hence all the
673 games to pass in a file descriptor if it's actually needed. */
675 f = sysconf(_SC_OPEN_MAX);
677 where = "sysconf failed";
688 union control_un control;
691 struct cmsghdr *cmptr;
695 msg.msg_control = control.control;
696 msg.msg_controllen = sizeof(control.control);
697 /* We're a connected socket so we don't need a source */
701 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
703 vec[0].iov_base = (void*)⌖
704 vec[0].iov_len = sizeof(target);
706 got = recvmsg(sock, &msg, 0);
711 where = "recv failed";
714 if(got < sizeof(target)) {
715 where = "short recv";
719 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
723 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
724 where = "wrong cmsg_len";
727 if(cmptr->cmsg_level != SOL_SOCKET) {
728 where = "wrong cmsg_level";
731 if(cmptr->cmsg_type != SCM_RIGHTS) {
732 where = "wrong cmsg_type";
736 got_fd = *(int*)CMSG_DATA(cmptr);
737 /* For our last little bit of trickery, put the file descriptor
738 back into Perl_debug_log, as if we never actually closed it
740 if(got_fd != debug_fd) {
741 if (dup2(got_fd, debug_fd) == -1) {
748 PerlIO_flush(Perl_debug_log);
750 got = write(sock, &success, sizeof(success));
753 where = "write failed";
756 if(got < sizeof(success)) {
757 where = "short write";
764 int send_errno = errno;
765 unsigned char length = (unsigned char) strlen(where);
766 struct iovec failure[3] = {
767 {(void*)&send_errno, sizeof(send_errno)},
769 {(void*)where, length}
771 int got = writev(sock, failure, 3);
772 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
773 in the parent if we try to read from the socketpair after the
774 child has exited, even if there was data to read.
775 So sleep a bit to give the parent a fighting chance of
778 _exit((got == -1) ? errno : 0);
782 PL_dumper_fd = fd[0];
787 /* We must account for everything. */
789 /* Destroy the main CV and syntax tree */
790 /* Set PL_curcop now, because destroying ops can cause new SVs
791 to be generated in Perl_pad_swipe, and when running with
792 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
793 op from which the filename structure member is copied. */
794 PL_curcop = &PL_compiling;
796 /* ensure comppad/curpad to refer to main's pad */
797 if (CvPADLIST(PL_main_cv)) {
798 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
799 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
801 op_free(PL_main_root);
804 PL_main_start = NULL;
805 /* note that PL_main_cv isn't usually actually freed at this point,
806 * due to the CvOUTSIDE refs from subs compiled within it. It will
807 * get freed once all the subs are freed in sv_clean_all(), for
808 * destruct_level > 0 */
809 SvREFCNT_dec(PL_main_cv);
811 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
813 /* Tell PerlIO we are about to tear things apart in case
814 we have layers which are using resources that should
818 PerlIO_destruct(aTHX);
821 * Try to destruct global references. We do this first so that the
822 * destructors and destructees still exist. Some sv's might remain.
823 * Non-referenced objects are on their own.
827 /* unhook hooks which will soon be, or use, destroyed data */
828 SvREFCNT_dec(PL_warnhook);
830 SvREFCNT_dec(PL_diehook);
833 /* call exit list functions */
834 while (PL_exitlistlen-- > 0)
835 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
837 Safefree(PL_exitlist);
842 SvREFCNT_dec(PL_registered_mros);
844 /* jettison our possibly duplicated environment */
845 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
846 * so we certainly shouldn't free it here
849 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
850 if (environ != PL_origenviron && !PL_use_safe_putenv
852 /* only main thread can free environ[0] contents */
853 && PL_curinterp == aTHX
859 for (i = 0; environ[i]; i++)
860 safesysfree(environ[i]);
862 /* Must use safesysfree() when working with environ. */
863 safesysfree(environ);
865 environ = PL_origenviron;
868 #endif /* !PERL_MICRO */
870 if (destruct_level == 0) {
872 DEBUG_P(debprofdump());
874 #if defined(PERLIO_LAYERS)
875 /* No more IO - including error messages ! */
876 PerlIO_cleanup(aTHX);
879 CopFILE_free(&PL_compiling);
881 /* The exit() function will do everything that needs doing. */
885 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
888 /* the syntax tree is shared between clones
889 * so op_free(PL_main_root) only ReREFCNT_dec's
890 * REGEXPs in the parent interpreter
891 * we need to manually ReREFCNT_dec for the clones
894 I32 i = AvFILLp(PL_regex_padav);
895 SV **ary = AvARRAY(PL_regex_padav);
898 SvREFCNT_dec(ary[i]);
899 ary[i] = &PL_sv_undef;
905 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
906 PL_stashcache = NULL;
908 /* loosen bonds of global variables */
910 /* XXX can PL_parser still be non-null here? */
911 if(PL_parser && PL_parser->rsfp) {
912 (void)PerlIO_close(PL_parser->rsfp);
913 PL_parser->rsfp = NULL;
917 Safefree(PL_splitstr);
927 PL_doswitches = FALSE;
928 PL_dowarn = G_WARN_OFF;
929 #ifdef PERL_SAWAMPERSAND
930 PL_sawampersand = 0; /* must save all match strings */
934 Safefree(PL_inplace);
936 SvREFCNT_dec(PL_patchlevel);
939 SvREFCNT_dec(PL_e_script);
945 /* magical thingies */
947 SvREFCNT_dec(PL_ofsgv); /* *, */
950 SvREFCNT_dec(PL_ors_sv); /* $\ */
953 SvREFCNT_dec(PL_rs); /* $/ */
956 Safefree(PL_osname); /* $^O */
959 SvREFCNT_dec(PL_statname);
963 /* defgv, aka *_ should be taken care of elsewhere */
966 Safefree(PL_efloatbuf);
970 /* startup and shutdown function lists */
971 SvREFCNT_dec(PL_beginav);
972 SvREFCNT_dec(PL_beginav_save);
973 SvREFCNT_dec(PL_endav);
974 SvREFCNT_dec(PL_checkav);
975 SvREFCNT_dec(PL_checkav_save);
976 SvREFCNT_dec(PL_unitcheckav);
977 SvREFCNT_dec(PL_unitcheckav_save);
978 SvREFCNT_dec(PL_initav);
980 PL_beginav_save = NULL;
983 PL_checkav_save = NULL;
984 PL_unitcheckav = NULL;
985 PL_unitcheckav_save = NULL;
988 /* shortcuts just get cleared */
994 PL_last_in_gv = NULL;
1005 SvREFCNT_dec(PL_envgv);
1006 SvREFCNT_dec(PL_incgv);
1007 SvREFCNT_dec(PL_argvgv);
1008 SvREFCNT_dec(PL_replgv);
1009 SvREFCNT_dec(PL_DBgv);
1010 SvREFCNT_dec(PL_DBline);
1011 SvREFCNT_dec(PL_DBsub);
1020 SvREFCNT_dec(PL_argvout_stack);
1021 PL_argvout_stack = NULL;
1023 SvREFCNT_dec(PL_modglobal);
1024 PL_modglobal = NULL;
1025 SvREFCNT_dec(PL_preambleav);
1026 PL_preambleav = NULL;
1027 SvREFCNT_dec(PL_subname);
1029 #ifdef PERL_USES_PL_PIDSTATUS
1030 SvREFCNT_dec(PL_pidstatus);
1031 PL_pidstatus = NULL;
1033 SvREFCNT_dec(PL_toptarget);
1034 PL_toptarget = NULL;
1035 SvREFCNT_dec(PL_bodytarget);
1036 PL_bodytarget = NULL;
1037 PL_formtarget = NULL;
1039 /* free locale stuff */
1040 #ifdef USE_LOCALE_COLLATE
1041 Safefree(PL_collation_name);
1042 PL_collation_name = NULL;
1045 #ifdef USE_LOCALE_NUMERIC
1046 Safefree(PL_numeric_name);
1047 PL_numeric_name = NULL;
1048 SvREFCNT_dec(PL_numeric_radix_sv);
1049 PL_numeric_radix_sv = NULL;
1052 /* clear character classes */
1053 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1054 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1055 PL_utf8_swash_ptrs[i] = NULL;
1057 SvREFCNT_dec(PL_utf8_mark);
1058 SvREFCNT_dec(PL_utf8_toupper);
1059 SvREFCNT_dec(PL_utf8_totitle);
1060 SvREFCNT_dec(PL_utf8_tolower);
1061 SvREFCNT_dec(PL_utf8_tofold);
1062 SvREFCNT_dec(PL_utf8_idstart);
1063 SvREFCNT_dec(PL_utf8_idcont);
1064 SvREFCNT_dec(PL_utf8_foldable);
1065 SvREFCNT_dec(PL_utf8_foldclosures);
1066 SvREFCNT_dec(PL_AboveLatin1);
1067 SvREFCNT_dec(PL_InBitmap);
1068 SvREFCNT_dec(PL_UpperLatin1);
1069 SvREFCNT_dec(PL_Latin1);
1070 SvREFCNT_dec(PL_NonL1NonFinalFold);
1071 SvREFCNT_dec(PL_HasMultiCharFold);
1072 #ifdef USE_LOCALE_CTYPE
1073 SvREFCNT_dec(PL_warn_locale);
1075 PL_utf8_mark = NULL;
1076 PL_utf8_toupper = NULL;
1077 PL_utf8_totitle = NULL;
1078 PL_utf8_tolower = NULL;
1079 PL_utf8_tofold = NULL;
1080 PL_utf8_idstart = NULL;
1081 PL_utf8_idcont = NULL;
1082 PL_utf8_foldclosures = NULL;
1083 PL_AboveLatin1 = NULL;
1085 PL_HasMultiCharFold = NULL;
1086 #ifdef USE_LOCALE_CTYPE
1087 PL_warn_locale = NULL;
1090 PL_NonL1NonFinalFold = NULL;
1091 PL_UpperLatin1 = NULL;
1092 for (i = 0; i < POSIX_CC_COUNT; i++) {
1093 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1094 PL_XPosix_ptrs[i] = NULL;
1096 PL_GCB_invlist = NULL;
1097 PL_LB_invlist = NULL;
1098 PL_SB_invlist = NULL;
1099 PL_WB_invlist = NULL;
1101 if (!specialWARN(PL_compiling.cop_warnings))
1102 PerlMemShared_free(PL_compiling.cop_warnings);
1103 PL_compiling.cop_warnings = NULL;
1104 cophh_free(CopHINTHASH_get(&PL_compiling));
1105 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1106 CopFILE_free(&PL_compiling);
1108 /* Prepare to destruct main symbol table. */
1111 /* break ref loop *:: <=> %:: */
1112 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1115 SvREFCNT_dec(PL_curstname);
1116 PL_curstname = NULL;
1118 /* clear queued errors */
1119 SvREFCNT_dec(PL_errors);
1122 SvREFCNT_dec(PL_isarev);
1125 if (destruct_level >= 2) {
1126 if (PL_scopestack_ix != 0)
1127 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1128 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1129 (long)PL_scopestack_ix);
1130 if (PL_savestack_ix != 0)
1131 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1132 "Unbalanced saves: %ld more saves than restores\n",
1133 (long)PL_savestack_ix);
1134 if (PL_tmps_floor != -1)
1135 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1136 (long)PL_tmps_floor + 1);
1137 if (cxstack_ix != -1)
1138 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1139 (long)cxstack_ix + 1);
1143 SvREFCNT_dec(PL_regex_padav);
1144 PL_regex_padav = NULL;
1145 PL_regex_pad = NULL;
1148 #ifdef PERL_IMPLICIT_CONTEXT
1149 /* the entries in this list are allocated via SV PVX's, so get freed
1150 * in sv_clean_all */
1151 Safefree(PL_my_cxt_list);
1154 /* Now absolutely destruct everything, somehow or other, loops or no. */
1156 /* the 2 is for PL_fdpid and PL_strtab */
1157 while (sv_clean_all() > 2)
1161 Safefree(PL_stashpad); /* must come after sv_clean_all */
1164 AvREAL_off(PL_fdpid); /* no surviving entries */
1165 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1168 #ifdef HAVE_INTERP_INTERN
1172 /* constant strings */
1173 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1174 SvREFCNT_dec(PL_sv_consts[i]);
1175 PL_sv_consts[i] = NULL;
1178 /* Destruct the global string table. */
1180 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1181 * so that sv_free() won't fail on them.
1182 * Now that the global string table is using a single hunk of memory
1183 * for both HE and HEK, we either need to explicitly unshare it the
1184 * correct way, or actually free things here.
1187 const I32 max = HvMAX(PL_strtab);
1188 HE * const * const array = HvARRAY(PL_strtab);
1189 HE *hent = array[0];
1192 if (hent && ckWARN_d(WARN_INTERNAL)) {
1193 HE * const next = HeNEXT(hent);
1194 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1195 "Unbalanced string table refcount: (%ld) for \"%s\"",
1196 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1203 hent = array[riter];
1208 HvARRAY(PL_strtab) = 0;
1209 HvTOTALKEYS(PL_strtab) = 0;
1211 SvREFCNT_dec(PL_strtab);
1214 /* free the pointer tables used for cloning */
1215 ptr_table_free(PL_ptr_table);
1216 PL_ptr_table = (PTR_TBL_t*)NULL;
1219 /* free special SVs */
1221 SvREFCNT(&PL_sv_yes) = 0;
1222 sv_clear(&PL_sv_yes);
1223 SvANY(&PL_sv_yes) = NULL;
1224 SvFLAGS(&PL_sv_yes) = 0;
1226 SvREFCNT(&PL_sv_no) = 0;
1227 sv_clear(&PL_sv_no);
1228 SvANY(&PL_sv_no) = NULL;
1229 SvFLAGS(&PL_sv_no) = 0;
1233 for (i=0; i<=2; i++) {
1234 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1235 sv_clear(PERL_DEBUG_PAD(i));
1236 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1237 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1241 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1242 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1244 #ifdef DEBUG_LEAKING_SCALARS
1245 if (PL_sv_count != 0) {
1250 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1251 svend = &sva[SvREFCNT(sva)];
1252 for (sv = sva + 1; sv < svend; ++sv) {
1253 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1254 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1256 " refcnt=%"UVuf pTHX__FORMAT "\n"
1257 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1259 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1261 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1263 sv->sv_debug_inpad ? "for" : "by",
1264 sv->sv_debug_optype ?
1265 PL_op_name[sv->sv_debug_optype]: "(none)",
1266 PTR2UV(sv->sv_debug_parent),
1269 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1270 Perl_dump_sv_child(aTHX_ sv);
1276 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1280 /* Wait for up to 4 seconds for child to terminate.
1281 This seems to be the least effort way of timing out on reaping
1283 struct timeval waitfor = {4, 0};
1284 int sock = PL_dumper_fd;
1288 FD_SET(sock, &rset);
1289 select(sock + 1, &rset, NULL, NULL, &waitfor);
1290 waitpid(child, &status, WNOHANG);
1295 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1301 #if defined(PERLIO_LAYERS)
1302 /* No more IO - including error messages ! */
1303 PerlIO_cleanup(aTHX);
1306 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1307 as currently layers use it rather than NULL as a marker
1308 for no arg - and will try and SvREFCNT_dec it.
1310 SvREFCNT(&PL_sv_undef) = 0;
1311 SvREADONLY_off(&PL_sv_undef);
1313 Safefree(PL_origfilename);
1314 PL_origfilename = NULL;
1315 Safefree(PL_reg_curpm);
1316 free_tied_hv_pool();
1317 Safefree(PL_op_mask);
1318 Safefree(PL_psig_name);
1319 PL_psig_name = (SV**)NULL;
1320 PL_psig_ptr = (SV**)NULL;
1322 /* We need to NULL PL_psig_pend first, so that
1323 signal handlers know not to use it */
1324 int *psig_save = PL_psig_pend;
1325 PL_psig_pend = (int*)NULL;
1326 Safefree(psig_save);
1329 TAINTING_set(FALSE);
1330 TAINT_WARN_set(FALSE);
1331 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1333 DEBUG_P(debprofdump());
1337 #ifdef USE_REENTRANT_API
1338 Perl_reentrant_free(aTHX);
1341 /* These all point to HVs that are about to be blown away.
1342 Code in core and on CPAN assumes that if the interpreter is re-started
1343 that they will be cleanly NULL or pointing to a valid HV. */
1344 PL_custom_op_names = NULL;
1345 PL_custom_op_descs = NULL;
1346 PL_custom_ops = NULL;
1350 while (PL_regmatch_slab) {
1351 regmatch_slab *s = PL_regmatch_slab;
1352 PL_regmatch_slab = PL_regmatch_slab->next;
1356 /* As the absolutely last thing, free the non-arena SV for mess() */
1359 /* we know that type == SVt_PVMG */
1361 /* it could have accumulated taint magic */
1364 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1365 moremagic = mg->mg_moremagic;
1366 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1368 Safefree(mg->mg_ptr);
1372 /* we know that type >= SVt_PV */
1373 SvPV_free(PL_mess_sv);
1374 Safefree(SvANY(PL_mess_sv));
1375 Safefree(PL_mess_sv);
1382 =for apidoc perl_free
1384 Releases a Perl interpreter. See L<perlembed>.
1394 PERL_ARGS_ASSERT_PERL_FREE;
1396 if (PL_veto_cleanup)
1399 #ifdef PERL_TRACK_MEMPOOL
1402 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1403 * value as we're probably hunting memory leaks then
1405 if (PL_perl_destruct_level == 0) {
1406 const U32 old_debug = PL_debug;
1407 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1408 thread at thread exit. */
1410 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1411 "free this thread's memory\n");
1412 PL_debug &= ~ DEBUG_m_FLAG;
1414 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1415 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1416 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1419 PL_debug = old_debug;
1424 #if defined(WIN32) || defined(NETWARE)
1425 # if defined(PERL_IMPLICIT_SYS)
1428 void *host = nw_internal_host;
1429 PerlMem_free(aTHXx);
1430 nw_delete_internal_host(host);
1432 void *host = w32_internal_host;
1433 PerlMem_free(aTHXx);
1434 win32_delete_internal_host(host);
1438 PerlMem_free(aTHXx);
1441 PerlMem_free(aTHXx);
1445 #if defined(USE_ITHREADS)
1446 /* provide destructors to clean up the thread key when libperl is unloaded */
1447 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1449 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1450 #pragma fini "perl_fini"
1451 #elif defined(__sun) && !defined(__GNUC__)
1452 #pragma fini (perl_fini)
1456 #if defined(__GNUC__)
1457 __attribute__((destructor))
1463 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1466 PL_curinterp && !PL_veto_cleanup)
1471 #endif /* THREADS */
1474 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1476 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1477 PL_exitlist[PL_exitlistlen].fn = fn;
1478 PL_exitlist[PL_exitlistlen].ptr = ptr;
1483 =for apidoc perl_parse
1485 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1490 #define SET_CURSTASH(newstash) \
1491 if (PL_curstash != newstash) { \
1492 SvREFCNT_dec(PL_curstash); \
1493 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1497 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1504 PERL_ARGS_ASSERT_PERL_PARSE;
1505 #ifndef MULTIPLICITY
1506 PERL_UNUSED_ARG(my_perl);
1508 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1510 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1512 if (s && strEQ(s, "1")) {
1513 const unsigned char *seed= PERL_HASH_SEED;
1514 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1515 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1516 while (seed < seed_end) {
1517 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1519 #ifdef PERL_HASH_RANDOMIZE_KEYS
1520 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1521 PL_HASH_RAND_BITS_ENABLED,
1522 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1524 PerlIO_printf(Perl_debug_log, "\n");
1527 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1531 struct NameTranslationInfo nti;
1532 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1539 if (PL_origalen != 0) {
1540 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1543 /* Set PL_origalen be the sum of the contiguous argv[]
1544 * elements plus the size of the env in case that it is
1545 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1546 * as the maximum modifiable length of $0. In the worst case
1547 * the area we are able to modify is limited to the size of
1548 * the original argv[0]. (See below for 'contiguous', though.)
1550 const char *s = NULL;
1552 const UV mask = ~(UV)(PTRSIZE-1);
1553 /* Do the mask check only if the args seem like aligned. */
1555 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1557 /* See if all the arguments are contiguous in memory. Note
1558 * that 'contiguous' is a loose term because some platforms
1559 * align the argv[] and the envp[]. If the arguments look
1560 * like non-aligned, assume that they are 'strictly' or
1561 * 'traditionally' contiguous. If the arguments look like
1562 * aligned, we just check that they are within aligned
1563 * PTRSIZE bytes. As long as no system has something bizarre
1564 * like the argv[] interleaved with some other data, we are
1565 * fine. (Did I just evoke Murphy's Law?) --jhi */
1566 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1568 for (i = 1; i < PL_origargc; i++) {
1569 if ((PL_origargv[i] == s + 1
1571 || PL_origargv[i] == s + 2
1576 (PL_origargv[i] > s &&
1578 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 #ifndef PERL_USE_SAFE_PUTENV
1590 /* Can we grab env area too to be used as the area for $0? */
1591 if (s && PL_origenviron && !PL_use_safe_putenv) {
1592 if ((PL_origenviron[0] == s + 1)
1595 (PL_origenviron[0] > s &&
1596 PL_origenviron[0] <=
1597 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1600 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1601 s = PL_origenviron[0];
1604 my_setenv("NoNe SuCh", NULL);
1605 /* Force copy of environment. */
1606 for (i = 1; PL_origenviron[i]; i++) {
1607 if (PL_origenviron[i] == s + 1
1610 (PL_origenviron[i] > s &&
1611 PL_origenviron[i] <=
1612 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1615 s = PL_origenviron[i];
1623 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1625 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1630 /* Come here if running an undumped a.out. */
1632 PL_origfilename = savepv(argv[0]);
1633 PL_do_undump = FALSE;
1634 cxstack_ix = -1; /* start label stack again */
1636 assert (!TAINT_get);
1640 init_postdump_symbols(argc,argv,env);
1645 op_free(PL_main_root);
1646 PL_main_root = NULL;
1648 PL_main_start = NULL;
1649 SvREFCNT_dec(PL_main_cv);
1653 oldscope = PL_scopestack_ix;
1654 PL_dowarn = G_WARN_OFF;
1659 parse_body(env,xsinit);
1660 if (PL_unitcheckav) {
1661 call_list(oldscope, PL_unitcheckav);
1664 PERL_SET_PHASE(PERL_PHASE_CHECK);
1665 call_list(oldscope, PL_checkav);
1673 /* my_exit() was called */
1674 while (PL_scopestack_ix > oldscope)
1677 SET_CURSTASH(PL_defstash);
1678 if (PL_unitcheckav) {
1679 call_list(oldscope, PL_unitcheckav);
1682 PERL_SET_PHASE(PERL_PHASE_CHECK);
1683 call_list(oldscope, PL_checkav);
1688 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1696 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1697 miniperl, and we need to see those flags reflected in the values here. */
1699 /* What this returns is subject to change. Use the public interface in Config.
1702 S_Internals_V(pTHX_ CV *cv)
1705 #ifdef LOCAL_PATCH_COUNT
1706 const int local_patch_count = LOCAL_PATCH_COUNT;
1708 const int local_patch_count = 0;
1710 const int entries = 3 + local_patch_count;
1712 static const char non_bincompat_options[] =
1719 # ifdef NO_HASH_SEED
1722 # ifdef NO_TAINT_SUPPORT
1725 # ifdef PERL_BOOL_AS_CHAR
1726 " PERL_BOOL_AS_CHAR"
1728 # ifdef PERL_COPY_ON_WRITE
1729 " PERL_COPY_ON_WRITE"
1731 # ifdef PERL_DISABLE_PMC
1734 # ifdef PERL_DONT_CREATE_GVSV
1735 " PERL_DONT_CREATE_GVSV"
1737 # ifdef PERL_EXTERNAL_GLOB
1738 " PERL_EXTERNAL_GLOB"
1740 # ifdef PERL_HASH_FUNC_SIPHASH
1741 " PERL_HASH_FUNC_SIPHASH"
1743 # ifdef PERL_HASH_FUNC_SDBM
1744 " PERL_HASH_FUNC_SDBM"
1746 # ifdef PERL_HASH_FUNC_DJB2
1747 " PERL_HASH_FUNC_DJB2"
1749 # ifdef PERL_HASH_FUNC_SUPERFAST
1750 " PERL_HASH_FUNC_SUPERFAST"
1752 # ifdef PERL_HASH_FUNC_MURMUR3
1753 " PERL_HASH_FUNC_MURMUR3"
1755 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1756 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1758 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1759 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1761 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1762 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1764 # ifdef PERL_IS_MINIPERL
1767 # ifdef PERL_MALLOC_WRAP
1770 # ifdef PERL_MEM_LOG
1773 # ifdef PERL_MEM_LOG_NOIMPL
1774 " PERL_MEM_LOG_NOIMPL"
1776 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1777 " PERL_PERTURB_KEYS_DETERMINISTIC"
1779 # ifdef PERL_PERTURB_KEYS_DISABLED
1780 " PERL_PERTURB_KEYS_DISABLED"
1782 # ifdef PERL_PERTURB_KEYS_RANDOM
1783 " PERL_PERTURB_KEYS_RANDOM"
1785 # ifdef PERL_PRESERVE_IVUV
1786 " PERL_PRESERVE_IVUV"
1788 # ifdef PERL_RELOCATABLE_INCPUSH
1789 " PERL_RELOCATABLE_INCPUSH"
1791 # ifdef PERL_USE_DEVEL
1794 # ifdef PERL_USE_SAFE_PUTENV
1795 " PERL_USE_SAFE_PUTENV"
1797 # ifdef SILENT_NO_TAINT_SUPPORT
1798 " SILENT_NO_TAINT_SUPPORT"
1800 # ifdef UNLINK_ALL_VERSIONS
1801 " UNLINK_ALL_VERSIONS"
1803 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1804 " USE_ATTRIBUTES_FOR_PERLIO"
1806 # ifdef USE_FAST_STDIO
1809 # ifdef USE_HASH_SEED_EXPLICIT
1810 " USE_HASH_SEED_EXPLICIT"
1815 # ifdef USE_LOCALE_CTYPE
1818 # ifdef WIN32_NO_REGISTRY
1821 # ifdef USE_PERL_ATOF
1824 # ifdef USE_SITECUSTOMIZE
1825 " USE_SITECUSTOMIZE"
1828 PERL_UNUSED_ARG(cv);
1829 PERL_UNUSED_VAR(items);
1831 EXTEND(SP, entries);
1833 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1834 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1835 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1837 #ifndef PERL_BUILD_DATE
1840 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1842 # define PERL_BUILD_DATE __DATE__
1847 #ifdef PERL_BUILD_DATE
1848 PUSHs(Perl_newSVpvn_flags(aTHX_
1849 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1852 PUSHs(&PL_sv_undef);
1855 for (i = 1; i <= local_patch_count; i++) {
1856 /* This will be an undef, if PL_localpatches[i] is NULL. */
1857 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1863 #define INCPUSH_UNSHIFT 0x01
1864 #define INCPUSH_ADD_OLD_VERS 0x02
1865 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1866 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1867 #define INCPUSH_NOT_BASEDIR 0x10
1868 #define INCPUSH_CAN_RELOCATE 0x20
1869 #define INCPUSH_ADD_SUB_DIRS \
1870 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1873 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1877 int argc = PL_origargc;
1878 char **argv = PL_origargv;
1879 const char *scriptname = NULL;
1880 bool dosearch = FALSE;
1882 bool doextract = FALSE;
1883 const char *cddir = NULL;
1884 #ifdef USE_SITECUSTOMIZE
1885 bool minus_f = FALSE;
1887 SV *linestr_sv = NULL;
1888 bool add_read_e_script = FALSE;
1889 U32 lex_start_flags = 0;
1891 PERL_SET_PHASE(PERL_PHASE_START);
1897 for (argc--,argv++; argc > 0; argc--,argv++) {
1898 if (argv[0][0] != '-' || !argv[0][1])
1904 #ifndef PERL_STRICT_CR
1928 if ((s = moreswitches(s)))
1933 #if defined(SILENT_NO_TAINT_SUPPORT)
1934 /* silently ignore */
1935 #elif defined(NO_TAINT_SUPPORT)
1936 Perl_croak_nocontext("This perl was compiled without taint support. "
1937 "Cowardly refusing to run with -t or -T flags");
1939 CHECK_MALLOC_TOO_LATE_FOR('t');
1940 if( !TAINTING_get ) {
1941 TAINT_WARN_set(TRUE);
1948 #if defined(SILENT_NO_TAINT_SUPPORT)
1949 /* silently ignore */
1950 #elif defined(NO_TAINT_SUPPORT)
1951 Perl_croak_nocontext("This perl was compiled without taint support. "
1952 "Cowardly refusing to run with -t or -T flags");
1954 CHECK_MALLOC_TOO_LATE_FOR('T');
1956 TAINT_WARN_set(FALSE);
1965 forbid_setid('e', FALSE);
1967 PL_e_script = newSVpvs("");
1968 add_read_e_script = TRUE;
1971 sv_catpv(PL_e_script, s);
1973 sv_catpv(PL_e_script, argv[1]);
1977 Perl_croak(aTHX_ "No code specified for -%c", c);
1978 sv_catpvs(PL_e_script, "\n");
1982 #ifdef USE_SITECUSTOMIZE
1988 case 'I': /* -I handled both here and in moreswitches() */
1989 forbid_setid('I', FALSE);
1990 if (!*++s && (s=argv[1]) != NULL) {
1994 STRLEN len = strlen(s);
1995 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1998 Perl_croak(aTHX_ "No directory specified for -I");
2001 forbid_setid('S', FALSE);
2010 opts_prog = newSVpvs("use Config; Config::_V()");
2014 opts_prog = Perl_newSVpvf(aTHX_
2015 "use Config; Config::config_vars(qw%c%s%c)",
2019 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2020 /* don't look for script or read stdin */
2021 scriptname = BIT_BUCKET;
2033 if (!*++s || isSPACE(*s)) {
2037 /* catch use of gnu style long options.
2038 Both of these exit immediately. */
2039 if (strEQ(s, "version"))
2041 if (strEQ(s, "help"))
2046 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2057 #ifndef SECURE_INTERNAL_GETENV
2060 (s = PerlEnv_getenv("PERL5OPT")))
2062 /* s points to static memory in getenv(), which may be overwritten at
2063 * any time; use a mortal copy instead */
2064 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2068 if (*s == '-' && *(s+1) == 'T') {
2069 #if defined(SILENT_NO_TAINT_SUPPORT)
2070 /* silently ignore */
2071 #elif defined(NO_TAINT_SUPPORT)
2072 Perl_croak_nocontext("This perl was compiled without taint support. "
2073 "Cowardly refusing to run with -t or -T flags");
2075 CHECK_MALLOC_TOO_LATE_FOR('T');
2077 TAINT_WARN_set(FALSE);
2081 char *popt_copy = NULL;
2094 if (!strchr("CDIMUdmtwW", *s))
2095 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2099 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2100 s = popt_copy + (s - d);
2108 #if defined(SILENT_NO_TAINT_SUPPORT)
2109 /* silently ignore */
2110 #elif defined(NO_TAINT_SUPPORT)
2111 Perl_croak_nocontext("This perl was compiled without taint support. "
2112 "Cowardly refusing to run with -t or -T flags");
2114 if( !TAINTING_get) {
2115 TAINT_WARN_set(TRUE);
2127 /* Set $^X early so that it can be used for relocatable paths in @INC */
2128 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2129 assert (!TAINT_get);
2134 #if defined(USE_SITECUSTOMIZE)
2136 /* The games with local $! are to avoid setting errno if there is no
2137 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2138 ie a q() operator with a NUL byte as a the delimiter. This avoids
2139 problems with pathnames containing (say) ' */
2140 # ifdef PERL_IS_MINIPERL
2141 AV *const inc = GvAV(PL_incgv);
2142 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2145 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2146 it should be reported immediately as a build failure. */
2147 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2149 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2150 "do {local $!; -f $f }"
2151 " and do $f || die $@ || qq '$f: $!' }",
2152 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2155 /* SITELIB_EXP is a function call on Win32. */
2156 const char *const raw_sitelib = SITELIB_EXP;
2158 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2159 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2160 INCPUSH_CAN_RELOCATE);
2161 const char *const sitelib = SvPVX(sitelib_sv);
2162 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2164 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2165 0, SVfARG(sitelib), 0,
2166 0, SVfARG(sitelib), 0));
2167 assert (SvREFCNT(sitelib_sv) == 1);
2168 SvREFCNT_dec(sitelib_sv);
2175 scriptname = argv[0];
2178 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2180 else if (scriptname == NULL) {
2182 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2188 assert (!TAINT_get);
2192 bool suidscript = FALSE;
2194 rsfp = open_script(scriptname, dosearch, &suidscript);
2196 rsfp = PerlIO_stdin();
2197 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2200 validate_suid(rsfp);
2203 # if defined(SIGCHLD) || defined(SIGCLD)
2206 # define SIGCHLD SIGCLD
2208 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2209 if (sigstate == (Sighandler_t) SIG_IGN) {
2210 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2211 "Can't ignore signal CHLD, forcing to default");
2212 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2220 /* This will croak if suidscript is true, as -x cannot be used with
2222 forbid_setid('x', suidscript);
2223 /* Hence you can't get here if suidscript is true */
2225 linestr_sv = newSV_type(SVt_PV);
2226 lex_start_flags |= LEX_START_COPIED;
2227 find_beginning(linestr_sv, rsfp);
2228 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2229 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2233 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2234 CvUNIQUE_on(PL_compcv);
2236 CvPADLIST_set(PL_compcv, pad_new(0));
2238 PL_isarev = newHV();
2241 boot_core_UNIVERSAL();
2243 newXS("Internals::V", S_Internals_V, __FILE__);
2246 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2248 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2254 # ifdef HAS_SOCKS5_INIT
2255 socks5_init(argv[0]);
2261 init_predump_symbols();
2262 /* init_postdump_symbols not currently designed to be called */
2263 /* more than once (ENV isn't cleared first, for example) */
2264 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2266 init_postdump_symbols(argc,argv,env);
2268 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2269 * or explicitly in some platforms.
2270 * locale.c:Perl_init_i18nl10n() if the environment
2271 * look like the user wants to use UTF-8. */
2272 #if defined(__SYMBIAN32__)
2273 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2275 # ifndef PERL_IS_MINIPERL
2277 /* Requires init_predump_symbols(). */
2278 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2283 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2284 * and the default open disciplines. */
2285 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2286 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2288 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2289 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2290 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2292 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2293 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2294 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2296 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2297 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2298 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2300 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2301 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2304 sv_setpvs(sv, ":utf8\0:utf8");
2306 sv_setpvs(sv, ":utf8\0");
2309 sv_setpvs(sv, "\0:utf8");
2318 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2319 if (strEQ(s, "unsafe"))
2320 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2321 else if (strEQ(s, "safe"))
2322 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2324 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2329 lex_start(linestr_sv, rsfp, lex_start_flags);
2330 SvREFCNT_dec(linestr_sv);
2332 PL_subname = newSVpvs("main");
2334 if (add_read_e_script)
2335 filter_add(read_e_script, NULL);
2337 /* now parse the script */
2339 SETERRNO(0,SS_NORMAL);
2340 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2342 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2344 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2348 CopLINE_set(PL_curcop, 0);
2349 SET_CURSTASH(PL_defstash);
2351 SvREFCNT_dec(PL_e_script);
2359 SAVECOPFILE(PL_curcop);
2360 SAVECOPLINE(PL_curcop);
2361 gv_check(PL_defstash);
2371 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2372 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2373 dump_mstats("after compilation:");
2378 PL_restartjmpenv = NULL;
2384 =for apidoc perl_run
2386 Tells a Perl interpreter to run. See L<perlembed>.
2398 PERL_ARGS_ASSERT_PERL_RUN;
2399 #ifndef MULTIPLICITY
2400 PERL_UNUSED_ARG(my_perl);
2403 oldscope = PL_scopestack_ix;
2411 cxstack_ix = -1; /* start context stack again */
2413 case 0: /* normal completion */
2417 case 2: /* my_exit() */
2418 while (PL_scopestack_ix > oldscope)
2421 SET_CURSTASH(PL_defstash);
2422 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2423 PL_endav && !PL_minus_c) {
2424 PERL_SET_PHASE(PERL_PHASE_END);
2425 call_list(oldscope, PL_endav);
2428 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2429 dump_mstats("after execution: ");
2435 POPSTACK_TO(PL_mainstack);
2438 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2449 S_run_body(pTHX_ I32 oldscope)
2451 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2452 PL_sawampersand ? "Enabling" : "Omitting",
2453 (unsigned int)(PL_sawampersand)));
2455 if (!PL_restartop) {
2457 if (DEBUG_x_TEST || DEBUG_B_TEST)
2458 dump_all_perl(!DEBUG_B_TEST);
2460 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2464 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2467 if (PERLDB_SINGLE && PL_DBsingle)
2470 PERL_SET_PHASE(PERL_PHASE_INIT);
2471 call_list(oldscope, PL_initav);
2473 #ifdef PERL_DEBUG_READONLY_OPS
2474 if (PL_main_root && PL_main_root->op_slabbed)
2475 Slab_to_ro(OpSLAB(PL_main_root));
2481 PERL_SET_PHASE(PERL_PHASE_RUN);
2484 PL_restartjmpenv = NULL;
2485 PL_op = PL_restartop;
2489 else if (PL_main_start) {
2490 CvDEPTH(PL_main_cv) = 1;
2491 PL_op = PL_main_start;
2495 NOT_REACHED; /* NOTREACHED */
2499 =head1 SV Manipulation Functions
2501 =for apidoc p||get_sv
2503 Returns the SV of the specified Perl scalar. C<flags> are passed to
2504 C<gv_fetchpv>. If C<GV_ADD> is set and the
2505 Perl variable does not exist then it will be created. If C<flags> is zero
2506 and the variable does not exist then NULL is returned.
2512 Perl_get_sv(pTHX_ const char *name, I32 flags)
2516 PERL_ARGS_ASSERT_GET_SV;
2518 gv = gv_fetchpv(name, flags, SVt_PV);
2525 =head1 Array Manipulation Functions
2527 =for apidoc p||get_av
2529 Returns the AV of the specified Perl global or package array with the given
2530 name (so it won't work on lexical variables). C<flags> are passed
2531 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2532 Perl variable does not exist then it will be created. If C<flags> is zero
2533 and the variable does not exist then NULL is returned.
2535 Perl equivalent: C<@{"$name"}>.
2541 Perl_get_av(pTHX_ const char *name, I32 flags)
2543 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2545 PERL_ARGS_ASSERT_GET_AV;
2555 =head1 Hash Manipulation Functions
2557 =for apidoc p||get_hv
2559 Returns the HV of the specified Perl hash. C<flags> are passed to
2560 C<gv_fetchpv>. If C<GV_ADD> is set and the
2561 Perl variable does not exist then it will be created. If C<flags> is zero
2562 and the variable does not exist then C<NULL> is returned.
2568 Perl_get_hv(pTHX_ const char *name, I32 flags)
2570 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2572 PERL_ARGS_ASSERT_GET_HV;
2582 =head1 CV Manipulation Functions
2584 =for apidoc p||get_cvn_flags
2586 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2587 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2588 exist then it will be declared (which has the same effect as saying
2589 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2590 then NULL is returned.
2592 =for apidoc p||get_cv
2594 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2600 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2602 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2604 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2606 /* XXX this is probably not what they think they're getting.
2607 * It has the same effect as "sub name;", i.e. just a forward
2609 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2610 return newSTUB(gv,0);
2617 /* Nothing in core calls this now, but we can't replace it with a macro and
2618 move it to mathoms.c as a macro would evaluate name twice. */
2620 Perl_get_cv(pTHX_ const char *name, I32 flags)
2622 PERL_ARGS_ASSERT_GET_CV;
2624 return get_cvn_flags(name, strlen(name), flags);
2627 /* Be sure to refetch the stack pointer after calling these routines. */
2631 =head1 Callback Functions
2633 =for apidoc p||call_argv
2635 Performs a callback to the specified named and package-scoped Perl subroutine
2636 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2639 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2645 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2647 /* See G_* flags in cop.h */
2648 /* null terminated arg list */
2652 PERL_ARGS_ASSERT_CALL_ARGV;
2656 mXPUSHs(newSVpv(*argv,0));
2660 return call_pv(sub_name, flags);
2664 =for apidoc p||call_pv
2666 Performs a callback to the specified Perl sub. See L<perlcall>.
2672 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2673 /* name of the subroutine */
2674 /* See G_* flags in cop.h */
2676 PERL_ARGS_ASSERT_CALL_PV;
2678 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2682 =for apidoc p||call_method
2684 Performs a callback to the specified Perl method. The blessed object must
2685 be on the stack. See L<perlcall>.
2691 Perl_call_method(pTHX_ const char *methname, I32 flags)
2692 /* name of the subroutine */
2693 /* See G_* flags in cop.h */
2697 PERL_ARGS_ASSERT_CALL_METHOD;
2699 len = strlen(methname);
2700 sv = flags & G_METHOD_NAMED
2701 ? sv_2mortal(newSVpvn_share(methname, len,0))
2702 : newSVpvn_flags(methname, len, SVs_TEMP);
2704 return call_sv(sv, flags | G_METHOD);
2707 /* May be called with any of a CV, a GV, or an SV containing the name. */
2709 =for apidoc p||call_sv
2711 Performs a callback to the Perl sub specified by the SV.
2713 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2714 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2715 or C<SvPV(sv)> will be used as the name of the sub to call.
2717 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2718 C<SvPV(sv)> will be used as the name of the method to call.
2720 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2721 the name of the method to call.
2723 Some other values are treated specially for internal use and should
2732 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2733 /* See G_* flags in cop.h */
2736 LOGOP myop; /* fake syntax tree node */
2740 bool oldcatch = CATCH_GET;
2742 OP* const oldop = PL_op;
2745 PERL_ARGS_ASSERT_CALL_SV;
2747 if (flags & G_DISCARD) {
2751 if (!(flags & G_WANT)) {
2752 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2757 Zero(&myop, 1, LOGOP);
2758 if (!(flags & G_NOARGS))
2759 myop.op_flags |= OPf_STACKED;
2760 myop.op_flags |= OP_GIMME_REVERSE(flags);
2764 if (!(flags & G_METHOD_NAMED)) {
2772 if (PERLDB_SUB && PL_curstash != PL_debstash
2773 /* Handle first BEGIN of -d. */
2774 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2775 /* Try harder, since this may have been a sighandler, thus
2776 * curstash may be meaningless. */
2777 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2778 && !(flags & G_NODEBUG))
2779 myop.op_private |= OPpENTERSUB_DB;
2781 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2782 Zero(&method_op, 1, METHOP);
2783 method_op.op_next = (OP*)&myop;
2784 PL_op = (OP*)&method_op;
2785 if ( flags & G_METHOD_NAMED ) {
2786 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2787 method_op.op_type = OP_METHOD_NAMED;
2788 method_op.op_u.op_meth_sv = sv;
2790 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2791 method_op.op_type = OP_METHOD;
2793 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2794 myop.op_type = OP_ENTERSUB;
2797 if (!(flags & G_EVAL)) {
2799 CALL_BODY_SUB((OP*)&myop);
2800 retval = PL_stack_sp - (PL_stack_base + oldmark);
2801 CATCH_SET(oldcatch);
2805 myop.op_other = (OP*)&myop;
2807 old_cxix = cxstack_ix;
2808 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2816 CALL_BODY_SUB((OP*)&myop);
2817 retval = PL_stack_sp - (PL_stack_base + oldmark);
2818 if (!(flags & G_KEEPERR)) {
2826 /* my_exit() was called */
2827 SET_CURSTASH(PL_defstash);
2831 NOT_REACHED; /* NOTREACHED */
2834 PL_restartjmpenv = NULL;
2835 PL_op = PL_restartop;
2839 PL_stack_sp = PL_stack_base + oldmark;
2840 if ((flags & G_WANT) == G_ARRAY)
2844 *++PL_stack_sp = &PL_sv_undef;
2849 /* if we croaked, depending on how we croaked the eval scope
2850 * may or may not have already been popped */
2851 if (cxstack_ix > old_cxix) {
2852 assert(cxstack_ix == old_cxix + 1);
2853 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2854 delete_eval_scope();
2859 if (flags & G_DISCARD) {
2860 PL_stack_sp = PL_stack_base + oldmark;
2869 /* Eval a string. The G_EVAL flag is always assumed. */
2872 =for apidoc p||eval_sv
2874 Tells Perl to C<eval> the string in the SV. It supports the same flags
2875 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2881 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2883 /* See G_* flags in cop.h */
2886 UNOP myop; /* fake syntax tree node */
2890 OP* const oldop = PL_op;
2893 PERL_ARGS_ASSERT_EVAL_SV;
2895 if (flags & G_DISCARD) {
2902 Zero(&myop, 1, UNOP);
2905 oldmark = SP - PL_stack_base;
2911 if (!(flags & G_NOARGS))
2912 myop.op_flags = OPf_STACKED;
2913 myop.op_type = OP_ENTEREVAL;
2914 myop.op_flags |= OP_GIMME_REVERSE(flags);
2915 if (flags & G_KEEPERR)
2916 myop.op_flags |= OPf_SPECIAL;
2918 if (flags & G_RE_REPARSING)
2919 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2921 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2922 * before a cx_pusheval(), which corrupts the stack after a croak */
2923 TAINT_PROPER("eval_sv()");
2929 if (PL_op == (OP*)(&myop)) {
2930 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2932 goto fail; /* failed in compilation */
2935 retval = PL_stack_sp - (PL_stack_base + oldmark);
2936 if (!(flags & G_KEEPERR)) {
2944 /* my_exit() was called */
2945 SET_CURSTASH(PL_defstash);
2949 NOT_REACHED; /* NOTREACHED */
2952 PL_restartjmpenv = NULL;
2953 PL_op = PL_restartop;
2958 PL_stack_sp = PL_stack_base + oldmark;
2959 if ((flags & G_WANT) == G_ARRAY)
2963 *++PL_stack_sp = &PL_sv_undef;
2969 if (flags & G_DISCARD) {
2970 PL_stack_sp = PL_stack_base + oldmark;
2980 =for apidoc p||eval_pv
2982 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2988 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2990 SV* sv = newSVpv(p, 0);
2992 PERL_ARGS_ASSERT_EVAL_PV;
2994 eval_sv(sv, G_SCALAR);
3003 /* just check empty string or undef? */
3004 if (croak_on_error) {
3005 SV * const errsv = ERRSV;
3006 if(SvTRUE_NN(errsv))
3007 /* replace with croak_sv? */
3008 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3014 /* Require a module. */
3017 =head1 Embedding Functions
3019 =for apidoc p||require_pv
3021 Tells Perl to C<require> the file named by the string argument. It is
3022 analogous to the Perl code C<eval "require '$file'">. It's even
3023 implemented that way; consider using load_module instead.
3028 Perl_require_pv(pTHX_ const char *pv)
3033 PERL_ARGS_ASSERT_REQUIRE_PV;
3035 PUSHSTACKi(PERLSI_REQUIRE);
3036 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3037 eval_sv(sv_2mortal(sv), G_DISCARD);
3042 S_usage(pTHX) /* XXX move this out into a module ? */
3044 /* This message really ought to be max 23 lines.
3045 * Removed -h because the user already knows that option. Others? */
3047 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3048 minimum of 509 character string literals. */
3049 static const char * const usage_msg[] = {
3050 " -0[octal] specify record separator (\\0, if no argument)\n"
3051 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3052 " -C[number/list] enables the listed Unicode features\n"
3053 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3054 " -d[:debugger] run program under debugger\n"
3055 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3056 " -e program one line of program (several -e's allowed, omit programfile)\n"
3057 " -E program like -e, but enables all optional features\n"
3058 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3059 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3060 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3061 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3062 " -l[octal] enable line ending processing, specifies line terminator\n"
3063 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3064 " -n assume \"while (<>) { ... }\" loop around program\n"
3065 " -p assume loop like -n but print line also, like sed\n"
3066 " -s enable rudimentary parsing for switches after programfile\n"
3067 " -S look for programfile using PATH environment variable\n",
3068 " -t enable tainting warnings\n"
3069 " -T enable tainting checks\n"
3070 " -u dump core after parsing program\n"
3071 " -U allow unsafe operations\n"
3072 " -v print version, patchlevel and license\n"
3073 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3074 " -w enable many useful warnings\n"
3075 " -W enable all warnings\n"
3076 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3077 " -X disable all warnings\n"
3079 "Run 'perldoc perl' for more help with Perl.\n\n",
3082 const char * const *p = usage_msg;
3083 PerlIO *out = PerlIO_stdout();
3086 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3089 PerlIO_puts(out, *p++);
3093 /* convert a string of -D options (or digits) into an int.
3094 * sets *s to point to the char after the options */
3098 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3100 static const char * const usage_msgd[] = {
3101 " Debugging flag values: (see also -d)\n"
3102 " p Tokenizing and parsing (with v, displays parse stack)\n"
3103 " s Stack snapshots (with v, displays all stacks)\n"
3104 " l Context (loop) stack processing\n"
3105 " t Trace execution\n"
3106 " o Method and overloading resolution\n",
3107 " c String/numeric conversions\n"
3108 " P Print profiling info, source file input state\n"
3109 " m Memory and SV allocation\n"
3110 " f Format processing\n"
3111 " r Regular expression parsing and execution\n"
3112 " x Syntax tree dump\n",
3113 " u Tainting checks\n"
3114 " H Hash dump -- usurps values()\n"
3115 " X Scratchpad allocation\n"
3117 " S Op slab allocation\n"
3119 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3120 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3121 " v Verbose: use in conjunction with other flags\n"
3122 " C Copy On Write\n"
3123 " A Consistency checks on internal structures\n"
3124 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3125 " M trace smart match resolution\n"
3126 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3127 " L trace some locale setting information--for Perl core development\n",
3132 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3135 /* if adding extra options, remember to update DEBUG_MASK */
3136 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3138 for (; isWORDCHAR(**s); (*s)++) {
3139 const char * const d = strchr(debopts,**s);
3141 uv |= 1 << (d - debopts);
3142 else if (ckWARN_d(WARN_DEBUGGING))
3143 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3144 "invalid option -D%c, use -D'' to see choices\n", **s);
3147 else if (isDIGIT(**s)) {
3149 if (grok_atoUV(*s, &uv, &e))
3151 for (; isWORDCHAR(**s); (*s)++) ;
3153 else if (givehelp) {
3154 const char *const *p = usage_msgd;
3155 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3157 return (int)uv; /* ignore any UV->int conversion loss */
3161 /* This routine handles any switches that can be given during run */
3164 Perl_moreswitches(pTHX_ const char *s)
3168 const char option = *s; /* used to remember option in -m/-M code */
3170 PERL_ARGS_ASSERT_MORESWITCHES;
3178 SvREFCNT_dec(PL_rs);
3179 if (s[1] == 'x' && s[2]) {
3180 const char *e = s+=2;
3186 flags = PERL_SCAN_SILENT_ILLDIGIT;
3187 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3188 if (s + numlen < e) {
3189 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3193 PL_rs = newSVpvs("");
3194 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3195 tmps = (U8*)SvPVX(PL_rs);
3196 uvchr_to_utf8(tmps, rschar);
3197 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3202 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3203 if (rschar & ~((U8)~0))
3204 PL_rs = &PL_sv_undef;
3205 else if (!rschar && numlen >= 2)
3206 PL_rs = newSVpvs("");
3208 char ch = (char)rschar;
3209 PL_rs = newSVpvn(&ch, 1);
3212 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3217 PL_unicode = parse_unicode_opts( (const char **)&s );
3218 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3226 while (*s && !isSPACE(*s)) ++s;
3227 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3239 forbid_setid('d', FALSE);
3242 /* -dt indicates to the debugger that threads will be used */
3243 if (*s == 't' && !isWORDCHAR(s[1])) {
3245 my_setenv("PERL5DB_THREADED", "1");
3248 /* The following permits -d:Mod to accepts arguments following an =
3249 in the fashion that -MSome::Mod does. */
3250 if (*s == ':' || *s == '=') {
3257 sv = newSVpvs("no Devel::");
3259 sv = newSVpvs("use Devel::");
3263 end = s + strlen(s);
3265 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3266 while(isWORDCHAR(*s) || *s==':') ++s;
3268 sv_catpvn(sv, start, end - start);
3270 sv_catpvn(sv, start, s-start);
3271 /* Don't use NUL as q// delimiter here, this string goes in the
3273 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3276 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3280 PL_perldb = PERLDB_ALL;
3287 forbid_setid('D', FALSE);
3289 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3290 #else /* !DEBUGGING */
3291 if (ckWARN_d(WARN_DEBUGGING))
3292 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3293 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3294 for (s++; isWORDCHAR(*s); s++) ;
3297 NOT_REACHED; /* NOTREACHED */
3301 NOT_REACHED; /* NOTREACHED */
3304 Safefree(PL_inplace);
3305 #if defined(__CYGWIN__) /* do backup extension automagically */
3306 if (*(s+1) == '\0') {
3307 PL_inplace = savepvs(".bak");
3310 #endif /* __CYGWIN__ */
3312 const char * const start = ++s;
3313 while (*s && !isSPACE(*s))
3316 PL_inplace = savepvn(start, s - start);
3320 if (*s == '-') /* Additional switches on #! line. */
3324 case 'I': /* -I handled both here and in parse_body() */
3325 forbid_setid('I', FALSE);
3327 while (*s && isSPACE(*s))
3332 /* ignore trailing spaces (possibly followed by other switches) */
3334 for (e = p; *e && !isSPACE(*e); e++) ;
3338 } while (*p && *p != '-');
3340 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3346 Perl_croak(aTHX_ "No directory specified for -I");
3352 SvREFCNT_dec(PL_ors_sv);
3358 PL_ors_sv = newSVpvs("\n");
3359 numlen = 3 + (*s == '0');
3360 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3364 if (RsPARA(PL_rs)) {
3365 PL_ors_sv = newSVpvs("\n\n");
3368 PL_ors_sv = newSVsv(PL_rs);
3373 forbid_setid('M', FALSE); /* XXX ? */
3376 forbid_setid('m', FALSE); /* XXX ? */
3381 const char *use = "use ";
3383 /* -M-foo == 'no foo' */
3384 /* Leading space on " no " is deliberate, to make both
3385 possibilities the same length. */
3386 if (*s == '-') { use = " no "; ++s; }
3387 sv = newSVpvn(use,4);
3389 /* We allow -M'Module qw(Foo Bar)' */
3390 while(isWORDCHAR(*s) || *s==':') {
3399 Perl_croak(aTHX_ "Module name required with -%c option",
3402 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3403 "contains single ':'",
3404 (int)(s - start), start, option);
3405 end = s + strlen(s);
3407 sv_catpvn(sv, start, end - start);
3408 if (option == 'm') {
3410 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3411 sv_catpvs( sv, " ()");
3414 sv_catpvn(sv, start, s-start);
3415 /* Use NUL as q''-delimiter. */
3416 sv_catpvs(sv, " split(/,/,q\0");
3418 sv_catpvn(sv, s, end - s);
3419 sv_catpvs(sv, "\0)");
3422 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3425 Perl_croak(aTHX_ "Missing argument to -%c", option);
3436 forbid_setid('s', FALSE);
3437 PL_doswitches = TRUE;
3442 #if defined(SILENT_NO_TAINT_SUPPORT)
3443 /* silently ignore */
3444 #elif defined(NO_TAINT_SUPPORT)
3445 Perl_croak_nocontext("This perl was compiled without taint support. "
3446 "Cowardly refusing to run with -t or -T flags");
3454 PL_do_undump = TRUE;
3464 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3465 PL_dowarn |= G_WARN_ON;
3470 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3471 if (!specialWARN(PL_compiling.cop_warnings))
3472 PerlMemShared_free(PL_compiling.cop_warnings);
3473 PL_compiling.cop_warnings = pWARN_ALL ;
3477 PL_dowarn = G_WARN_ALL_OFF;
3478 if (!specialWARN(PL_compiling.cop_warnings))
3479 PerlMemShared_free(PL_compiling.cop_warnings);
3480 PL_compiling.cop_warnings = pWARN_NONE ;
3487 if (s[0] == '-') /* Additional switches on #! line. */
3492 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3498 #ifdef ALTERNATE_SHEBANG
3499 case 'S': /* OS/2 needs -S on "extproc" line. */
3502 case 'e': case 'f': case 'x': case 'E':
3503 #ifndef ALTERNATE_SHEBANG
3507 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3510 "Unrecognized switch: -%.1s (-h will show valid options)",s
3520 PerlIO * PIO_stdout;
3522 const char * const level_str = "v" PERL_VERSION_STRING;
3523 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3524 #ifdef PERL_PATCHNUM
3526 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3527 static const char num [] = PERL_PATCHNUM "*";
3529 static const char num [] = PERL_PATCHNUM;
3532 const STRLEN num_len = sizeof(num)-1;
3533 /* A very advanced compiler would fold away the strnEQ
3534 and this whole conditional, but most (all?) won't do it.
3535 SV level could also be replaced by with preprocessor
3538 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3539 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3540 of the interp so it might contain format characters
3542 level = newSVpvn(num, num_len);
3544 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3548 SV* level = newSVpvn(level_str, level_len);
3549 #endif /* #ifdef PERL_PATCHNUM */
3550 PIO_stdout = PerlIO_stdout();
3551 PerlIO_printf(PIO_stdout,
3552 "\nThis is perl " STRINGIFY(PERL_REVISION)
3553 ", version " STRINGIFY(PERL_VERSION)
3554 ", subversion " STRINGIFY(PERL_SUBVERSION)
3555 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3557 SvREFCNT_dec_NN(level);
3559 #if defined(LOCAL_PATCH_COUNT)
3560 if (LOCAL_PATCH_COUNT > 0)
3561 PerlIO_printf(PIO_stdout,
3562 "\n(with %d registered patch%s, "
3563 "see perl -V for more detail)",
3565 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3568 PerlIO_printf(PIO_stdout,
3569 "\n\nCopyright 1987-2016, Larry Wall\n");
3571 PerlIO_printf(PIO_stdout,
3572 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3575 PerlIO_printf(PIO_stdout,
3576 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3577 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3580 PerlIO_printf(PIO_stdout,
3581 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3582 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3585 PerlIO_printf(PIO_stdout,
3586 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3589 PerlIO_printf(PIO_stdout,
3590 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3593 PerlIO_printf(PIO_stdout,
3594 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3597 PerlIO_printf(PIO_stdout,
3598 "WINCE port by Rainer Keuchel, 2001-2002\n"
3599 "Built on " __DATE__ " " __TIME__ "\n\n");
3602 #ifdef __SYMBIAN32__
3603 PerlIO_printf(PIO_stdout,
3604 "Symbian port by Nokia, 2004-2005\n");
3606 #ifdef BINARY_BUILD_NOTICE
3607 BINARY_BUILD_NOTICE;
3609 PerlIO_printf(PIO_stdout,
3611 Perl may be copied only under the terms of either the Artistic License or the\n\
3612 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3613 Complete documentation for Perl, including FAQ lists, should be found on\n\
3614 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3615 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3619 /* compliments of Tom Christiansen */
3621 /* unexec() can be found in the Gnu emacs distribution */
3622 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3625 #include <lib$routines.h>
3629 Perl_my_unexec(pTHX)
3632 SV * prog = newSVpv(BIN_EXP, 0);
3633 SV * file = newSVpv(PL_origfilename, 0);
3637 sv_catpvs(prog, "/perl");
3638 sv_catpvs(file, ".perldump");
3640 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3641 /* unexec prints msg to stderr in case of failure */
3642 PerlProc_exit(status);
3644 PERL_UNUSED_CONTEXT;
3646 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3647 # elif defined(WIN32) || defined(__CYGWIN__)
3648 Perl_croak_nocontext("dump is not supported");
3650 ABORT(); /* for use with undump */
3655 /* initialize curinterp */
3660 # define PERLVAR(prefix,var,type)
3661 # define PERLVARA(prefix,var,n,type)
3662 # if defined(PERL_IMPLICIT_CONTEXT)
3663 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3664 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3666 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3667 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3669 # include "intrpvar.h"
3675 # define PERLVAR(prefix,var,type)
3676 # define PERLVARA(prefix,var,n,type)
3677 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3678 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3679 # include "intrpvar.h"
3689 S_init_main_stash(pTHX)
3693 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3694 /* We know that the string "main" will be in the global shared string
3695 table, so it's a small saving to use it rather than allocate another
3697 PL_curstname = newSVpvs_share("main");
3698 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3699 /* If we hadn't caused another reference to "main" to be in the shared
3700 string table above, then it would be worth reordering these two,
3701 because otherwise all we do is delete "main" from it as a consequence
3702 of the SvREFCNT_dec, only to add it again with hv_name_set */
3703 SvREFCNT_dec(GvHV(gv));
3704 hv_name_set(PL_defstash, "main", 4, 0);
3705 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3707 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3709 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3710 GvMULTI_on(PL_incgv);
3711 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3712 SvREFCNT_inc_simple_void(PL_hintgv);
3713 GvMULTI_on(PL_hintgv);
3714 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3715 SvREFCNT_inc_simple_void(PL_defgv);
3716 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3717 SvREFCNT_inc_simple_void(PL_errgv);
3718 GvMULTI_on(PL_errgv);
3719 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3720 SvREFCNT_inc_simple_void(PL_replgv);
3721 GvMULTI_on(PL_replgv);
3722 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3723 #ifdef PERL_DONT_CREATE_GVSV
3724 (void)gv_SVadd(PL_errgv);
3726 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3728 SET_CURSTASH(PL_defstash);
3729 CopSTASH_set(&PL_compiling, PL_defstash);
3730 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3731 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3733 /* We must init $/ before switches are processed. */
3734 sv_setpvs(get_sv("/", GV_ADD), "\n");
3738 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3741 PerlIO *rsfp = NULL;
3745 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3748 PL_origfilename = savepvs("-e");
3753 /* if find_script() returns, it returns a malloc()-ed value */
3754 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3756 if (strnEQ(scriptname, "/dev/fd/", 8)
3757 && isDIGIT(scriptname[8])
3758 && grok_atoUV(scriptname + 8, &uv, &s)
3759 && uv <= PERL_INT_MAX
3764 * Tell apart "normal" usage of fdscript, e.g.
3765 * with bash on FreeBSD:
3766 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3767 * from usage in suidperl.
3768 * Does any "normal" usage leave garbage after the number???
3769 * Is it a mistake to use a similar /dev/fd/ construct for
3774 * Be supersafe and do some sanity-checks.
3775 * Still, can we be sure we got the right thing?
3778 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3781 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3783 scriptname = savepv(s + 1);
3784 Safefree(PL_origfilename);
3785 PL_origfilename = (char *)scriptname;
3790 CopFILE_free(PL_curcop);
3791 CopFILE_set(PL_curcop, PL_origfilename);
3792 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3793 scriptname = (char *)"";
3794 if (fdscript >= 0) {
3795 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3797 else if (!*scriptname) {
3798 forbid_setid(0, *suidscript);
3802 #ifdef FAKE_BIT_BUCKET
3803 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3804 * is called) and still have the "-e" work. (Believe it or not,
3805 * a /dev/null is required for the "-e" to work because source
3806 * filter magic is used to implement it. ) This is *not* a general
3807 * replacement for a /dev/null. What we do here is create a temp
3808 * file (an empty file), open up that as the script, and then
3809 * immediately close and unlink it. Close enough for jazz. */
3810 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3811 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3812 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3813 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3814 FAKE_BIT_BUCKET_TEMPLATE
3816 const char * const err = "Failed to create a fake bit bucket";
3817 if (strEQ(scriptname, BIT_BUCKET)) {
3818 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3819 int old_umask = umask(0177);
3820 int tmpfd = mkstemp(tmpname);
3823 scriptname = tmpname;
3826 Perl_croak(aTHX_ err);
3829 scriptname = mktemp(tmpname);
3831 Perl_croak(aTHX_ err);
3836 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3837 #ifdef FAKE_BIT_BUCKET
3838 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3839 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3840 && strlen(scriptname) == sizeof(tmpname) - 1) {
3843 scriptname = BIT_BUCKET;
3847 /* PSz 16 Sep 03 Keep neat error message */
3849 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3851 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3852 CopFILE(PL_curcop), Strerror(errno));
3854 fd = PerlIO_fileno(rsfp);
3855 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3857 /* ensure close-on-exec */
3858 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3859 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3860 CopFILE(PL_curcop), Strerror(errno));
3866 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3867 && S_ISDIR(tmpstatbuf.st_mode)))
3868 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3876 * I_SYSSTATVFS HAS_FSTATVFS
3878 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3879 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3880 * here so that metaconfig picks them up. */
3883 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3884 /* Don't even need this function. */
3887 S_validate_suid(pTHX_ PerlIO *rsfp)
3889 const Uid_t my_uid = PerlProc_getuid();
3890 const Uid_t my_euid = PerlProc_geteuid();
3891 const Gid_t my_gid = PerlProc_getgid();
3892 const Gid_t my_egid = PerlProc_getegid();
3894 PERL_ARGS_ASSERT_VALIDATE_SUID;
3896 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3898 int fd = PerlIO_fileno(rsfp);
3900 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3901 Perl_croak_nocontext( "Illegal suidscript");
3903 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3905 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3908 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3909 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3910 /* not set-id, must be wrapped */
3913 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3916 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3921 PERL_ARGS_ASSERT_FIND_BEGINNING;
3923 /* skip forward in input to the real script? */
3926 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3927 Perl_croak(aTHX_ "No Perl script found in input\n");
3929 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3930 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3931 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3933 while (*s == ' ' || *s == '\t') s++;
3935 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3936 || s2[-1] == '_') s2--;
3937 if (strnEQ(s2-4,"perl",4))
3938 while ((s = moreswitches(s)))
3947 /* no need to do anything here any more if we don't
3949 #ifndef NO_TAINT_SUPPORT
3950 const Uid_t my_uid = PerlProc_getuid();
3951 const Uid_t my_euid = PerlProc_geteuid();
3952 const Gid_t my_gid = PerlProc_getgid();
3953 const Gid_t my_egid = PerlProc_getegid();
3955 PERL_UNUSED_CONTEXT;
3957 /* Should not happen: */
3958 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3959 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3963 * Should go by suidscript, not uid!=euid: why disallow
3964 * system("ls") in scripts run from setuid things?
3965 * Or, is this run before we check arguments and set suidscript?
3966 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3967 * (We never have suidscript, can we be sure to have fdscript?)
3968 * Or must then go by UID checks? See comments in forbid_setid also.
3972 /* This is used very early in the lifetime of the program,
3973 * before even the options are parsed, so PL_tainting has
3974 * not been initialized properly. */
3976 Perl_doing_taint(int argc, char *argv[], char *envp[])
3978 #ifndef PERL_IMPLICIT_SYS
3979 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3980 * before we have an interpreter-- and the whole point of this
3981 * function is to be called at such an early stage. If you are on
3982 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3983 * "tainted because running with altered effective ids', you'll
3984 * have to add your own checks somewhere in here. The two most
3985 * known samples of 'implicitness' are Win32 and NetWare, neither
3986 * of which has much of concept of 'uids'. */
3987 Uid_t uid = PerlProc_getuid();
3988 Uid_t euid = PerlProc_geteuid();
3989 Gid_t gid = PerlProc_getgid();
3990 Gid_t egid = PerlProc_getegid();
3997 if (uid && (euid != uid || egid != gid))
3999 #endif /* !PERL_IMPLICIT_SYS */
4000 /* This is a really primitive check; environment gets ignored only
4001 * if -T are the first chars together; otherwise one gets
4002 * "Too late" message. */
4003 if ( argc > 1 && argv[1][0] == '-'
4004 && isALPHA_FOLD_EQ(argv[1][1], 't'))
4009 /* Passing the flag as a single char rather than a string is a slight space
4010 optimisation. The only message that isn't /^-.$/ is
4011 "program input from stdin", which is substituted in place of '\0', which
4012 could never be a command line flag. */
4014 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
4016 char string[3] = "-x";
4017 const char *message = "program input from stdin";
4019 PERL_UNUSED_CONTEXT;
4025 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4026 if (PerlProc_getuid() != PerlProc_geteuid())
4027 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4028 if (PerlProc_getgid() != PerlProc_getegid())
4029 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4030 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4032 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4036 Perl_init_dbargs(pTHX)
4038 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4043 /* Someone has already created it.
4044 It might have entries, and if we just turn off AvREAL(), they will
4045 "leak" until global destruction. */
4047 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4048 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4050 AvREIFY_only(PL_dbargs);
4054 Perl_init_debugger(pTHX)
4056 HV * const ostash = PL_curstash;
4059 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4061 Perl_init_dbargs(aTHX);
4062 PL_DBgv = MUTABLE_GV(
4063 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4065 PL_DBline = MUTABLE_GV(
4066 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4068 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4069 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4071 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4072 if (!SvIOK(PL_DBsingle))
4073 sv_setiv(PL_DBsingle, 0);
4074 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4075 mg->mg_private = DBVARMG_SINGLE;
4076 SvSETMAGIC(PL_DBsingle);
4078 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4079 if (!SvIOK(PL_DBtrace))
4080 sv_setiv(PL_DBtrace, 0);
4081 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4082 mg->mg_private = DBVARMG_TRACE;
4083 SvSETMAGIC(PL_DBtrace);
4085 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4086 if (!SvIOK(PL_DBsignal))
4087 sv_setiv(PL_DBsignal, 0);
4088 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4089 mg->mg_private = DBVARMG_SIGNAL;
4090 SvSETMAGIC(PL_DBsignal);
4092 SvREFCNT_dec(PL_curstash);
4093 PL_curstash = ostash;
4096 #ifndef STRESS_REALLOC
4097 #define REASONABLE(size) (size)
4098 #define REASONABLE_but_at_least(size,min) (size)
4100 #define REASONABLE(size) (1) /* unreasonable */
4101 #define REASONABLE_but_at_least(size,min) (min)
4105 Perl_init_stacks(pTHX)
4109 /* start with 128-item stack and 8K cxstack */
4110 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4111 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4112 PL_curstackinfo->si_type = PERLSI_MAIN;
4113 PL_curstack = PL_curstackinfo->si_stack;
4114 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4116 PL_stack_base = AvARRAY(PL_curstack);
4117 PL_stack_sp = PL_stack_base;
4118 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4120 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4123 PL_tmps_max = REASONABLE(128);
4125 Newx(PL_markstack,REASONABLE(32),I32);
4126 PL_markstack_ptr = PL_markstack;
4127 PL_markstack_max = PL_markstack + REASONABLE(32);
4131 Newx(PL_scopestack,REASONABLE(32),I32);
4133 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4135 PL_scopestack_ix = 0;
4136 PL_scopestack_max = REASONABLE(32);
4138 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4139 Newx(PL_savestack, size, ANY);
4140 PL_savestack_ix = 0;
4141 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4142 PL_savestack_max = size - SS_MAXPUSH;
4150 while (PL_curstackinfo->si_next)
4151 PL_curstackinfo = PL_curstackinfo->si_next;
4152 while (PL_curstackinfo) {
4153 PERL_SI *p = PL_curstackinfo->si_prev;
4154 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4155 Safefree(PL_curstackinfo->si_cxstack);
4156 Safefree(PL_curstackinfo);
4157 PL_curstackinfo = p;
4159 Safefree(PL_tmps_stack);
4160 Safefree(PL_markstack);
4161 Safefree(PL_scopestack);
4163 Safefree(PL_scopestack_name);
4165 Safefree(PL_savestack);
4169 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4171 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4172 AV *const isa = GvAVn(gv);
4175 PERL_ARGS_ASSERT_POPULATE_ISA;
4177 if(AvFILLp(isa) != -1)
4180 /* NOTE: No support for tied ISA */
4182 va_start(args, len);
4184 const char *const parent = va_arg(args, const char*);
4189 parent_len = va_arg(args, size_t);
4191 /* Arguments are supplied with a trailing :: */
4192 assert(parent_len > 2);
4193 assert(parent[parent_len - 1] == ':');
4194 assert(parent[parent_len - 2] == ':');
4195 av_push(isa, newSVpvn(parent, parent_len - 2));
4196 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4203 S_init_predump_symbols(pTHX)
4208 sv_setpvs(get_sv("\"", GV_ADD), " ");
4209 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4212 /* Historically, PVIOs were blessed into IO::Handle, unless
4213 FileHandle was loaded, in which case they were blessed into
4214 that. Action at a distance.
4215 However, if we simply bless into IO::Handle, we break code
4216 that assumes that PVIOs will have (among others) a seek
4217 method. IO::File inherits from IO::Handle and IO::Seekable,
4218 and provides the needed methods. But if we simply bless into
4219 it, then we break code that assumed that by loading
4220 IO::Handle, *it* would work.
4221 So a compromise is to set up the correct @IO::File::ISA,
4222 so that code that does C<use IO::Handle>; will still work.
4225 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4226 STR_WITH_LEN("IO::Handle::"),
4227 STR_WITH_LEN("IO::Seekable::"),
4228 STR_WITH_LEN("Exporter::"),
4231 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4232 GvMULTI_on(PL_stdingv);
4233 io = GvIOp(PL_stdingv);
4234 IoTYPE(io) = IoTYPE_RDONLY;
4235 IoIFP(io) = PerlIO_stdin();
4236 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4238 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4240 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4243 IoTYPE(io) = IoTYPE_WRONLY;
4244 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4246 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4248 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4250 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4251 GvMULTI_on(PL_stderrgv);
4252 io = GvIOp(PL_stderrgv);
4253 IoTYPE(io) = IoTYPE_WRONLY;
4254 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4255 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4257 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4259 PL_statname = newSVpvs(""); /* last filename we did stat on */
4263 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4265 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4267 argc--,argv++; /* skip name of script */
4268 if (PL_doswitches) {
4269 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4273 if (argv[0][1] == '-' && !argv[0][2]) {
4277 if ((s = strchr(argv[0], '='))) {
4278 const char *const start_name = argv[0] + 1;
4279 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4280 TRUE, SVt_PV)), s + 1);
4283 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4286 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4287 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4288 GvMULTI_on(PL_argvgv);
4289 av_clear(GvAVn(PL_argvgv));
4290 for (; argc > 0; argc--,argv++) {
4291 SV * const sv = newSVpv(argv[0],0);
4292 av_push(GvAV(PL_argvgv),sv);
4293 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4294 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4297 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4298 (void)sv_utf8_decode(sv);
4302 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4303 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4304 "-i used with no filenames on the command line, "
4305 "reading from STDIN");
4309 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4316 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4318 PL_toptarget = newSV_type(SVt_PVIV);
4319 sv_setpvs(PL_toptarget, "");
4320 PL_bodytarget = newSV_type(SVt_PVIV);
4321 sv_setpvs(PL_bodytarget, "");
4322 PL_formtarget = PL_bodytarget;
4326 init_argv_symbols(argc,argv);
4328 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4329 sv_setpv(GvSV(tmpgv),PL_origfilename);
4331 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4333 bool env_is_not_environ;
4334 SvREFCNT_inc_simple_void_NN(PL_envgv);
4335 GvMULTI_on(PL_envgv);
4336 hv = GvHVn(PL_envgv);
4337 hv_magic(hv, NULL, PERL_MAGIC_env);
4339 #ifdef USE_ENVIRON_ARRAY
4340 /* Note that if the supplied env parameter is actually a copy
4341 of the global environ then it may now point to free'd memory
4342 if the environment has been modified since. To avoid this
4343 problem we treat env==NULL as meaning 'use the default'
4347 env_is_not_environ = env != environ;
4348 if (env_is_not_environ
4349 # ifdef USE_ITHREADS
4350 && PL_curinterp == aTHX
4362 for (; *env; env++) {
4365 if (!(s = strchr(old_var,'=')) || s == old_var)
4369 #if defined(MSDOS) && !defined(DJGPP)
4371 (void)strupr(old_var);
4374 if (hv_exists(hv, old_var, nlen)) {
4375 const char *name = savepvn(old_var, nlen);
4377 /* make sure we use the same value as getenv(), otherwise code that
4378 uses getenv() (like setlocale()) might see a different value to %ENV
4380 sv = newSVpv(PerlEnv_getenv(name), 0);
4382 /* keep a count of the dups of this name so we can de-dup environ later */
4383 if (hv_exists(dups, name, nlen))
4384 ++SvIVX(*hv_fetch(dups, name, nlen, 0));
4386 (void)hv_store(dups, name, nlen, newSViv(1), 0);
4391 sv = newSVpv(s+1, 0);
4393 (void)hv_store(hv, old_var, nlen, sv, 0);
4394 if (env_is_not_environ)
4398 /* environ has some duplicate definitions, remove them */
4401 while ((entry = hv_iternext_flags(dups, 0))) {
4403 const char *name = HePV(entry, nlen);
4404 IV count = SvIV(HeVAL(entry));
4406 SV **valp = hv_fetch(hv, name, nlen, 0);
4410 /* try to remove any duplicate names, depending on the
4411 * implementation used in my_setenv() the iteration might
4412 * not be necessary, but let's be safe.
4414 for (i = 0; i < count; ++i)
4417 /* and set it back to the value we set $ENV{name} to */
4418 my_setenv(name, SvPV_nolen(*valp));
4421 SvREFCNT_dec_NN(dups);
4423 #endif /* USE_ENVIRON_ARRAY */
4424 #endif /* !PERL_MICRO */
4428 /* touch @F array to prevent spurious warnings 20020415 MJD */
4430 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4435 S_init_perllib(pTHX)
4438 const char *perl5lib = NULL;
4441 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4445 if (!TAINTING_get) {
4447 perl5lib = PerlEnv_getenv("PERL5LIB");
4449 * It isn't possible to delete an environment variable with
4450 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4451 * case we treat PERL5LIB as undefined if it has a zero-length value.
4453 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4454 if (perl5lib && *perl5lib != '\0')
4458 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4460 s = PerlEnv_getenv("PERLLIB");
4462 incpush_use_sep(s, 0, 0);
4465 /* Treat PERL5?LIB as a possible search list logical name -- the
4466 * "natural" VMS idiom for a Unix path string. We allow each
4467 * element to be a set of |-separated directories for compatibility.
4471 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4473 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4474 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4476 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4477 incpush_use_sep(buf, 0, 0);
4482 #ifndef PERL_IS_MINIPERL
4483 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4484 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4486 /* Use the ~-expanded versions of APPLLIB (undocumented),
4487 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4490 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4491 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4495 /* sitearch is always relative to sitelib on Windows for
4496 * DLL-based path intuition to work correctly */
4497 # if !defined(WIN32)
4498 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4499 INCPUSH_CAN_RELOCATE);
4505 /* this picks up sitearch as well */
4506 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4508 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4510 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4514 #ifdef PERL_VENDORARCH_EXP
4515 /* vendorarch is always relative to vendorlib on Windows for
4516 * DLL-based path intuition to work correctly */
4517 # if !defined(WIN32)
4518 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4519 INCPUSH_CAN_RELOCATE);
4523 #ifdef PERL_VENDORLIB_EXP
4525 /* this picks up vendorarch as well */
4526 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4528 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4530 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4531 INCPUSH_CAN_RELOCATE);
4536 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4540 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4544 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4546 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4549 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4551 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4555 #ifdef PERL_OTHERLIBDIRS
4556 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4557 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4558 |INCPUSH_CAN_RELOCATE);
4561 if (!TAINTING_get) {
4564 * It isn't possible to delete an environment variable with
4565 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4566 * case we treat PERL5LIB as undefined if it has a zero-length value.
4568 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4569 if (perl5lib && *perl5lib != '\0')
4573 incpush_use_sep(perl5lib, 0,
4574 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4576 /* Treat PERL5?LIB as a possible search list logical name -- the
4577 * "natural" VMS idiom for a Unix path string. We allow each
4578 * element to be a set of |-separated directories for compatibility.
4582 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4584 incpush_use_sep(buf, 0,
4585 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4586 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4590 /* Use the ~-expanded versions of APPLLIB (undocumented),
4591 SITELIB and VENDORLIB for older versions
4594 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4595 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4598 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4599 /* Search for version-specific dirs below here */
4600 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4601 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4605 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4606 /* Search for version-specific dirs below here */
4607 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4608 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4611 #ifdef PERL_OTHERLIBDIRS
4612 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4613 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4614 |INCPUSH_CAN_RELOCATE);
4616 #endif /* !PERL_IS_MINIPERL */
4619 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4622 #if defined(DOSISH) || defined(__SYMBIAN32__)
4623 # define PERLLIB_SEP ';'
4626 # define PERLLIB_SEP '|'
4628 # define PERLLIB_SEP ':'
4631 #ifndef PERLLIB_MANGLE
4632 # define PERLLIB_MANGLE(s,n) (s)
4635 #ifndef PERL_IS_MINIPERL
4636 /* Push a directory onto @INC if it exists.
4637 Generate a new SV if we do this, to save needing to copy the SV we push
4640 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4644 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4646 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4647 S_ISDIR(tmpstatbuf.st_mode)) {
4649 dir = newSVsv(stem);
4651 /* Truncate dir back to stem. */
4652 SvCUR_set(dir, SvCUR(stem));
4659 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4661 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4664 PERL_ARGS_ASSERT_MAYBERELOCATE;
4667 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4668 defined to so something (in os2/os2.c), but the code has been
4669 this way, ignoring any possible changed of length, since
4670 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4672 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4678 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4680 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4681 sv_usepvn(libdir,unix,len);
4684 PerlIO_printf(Perl_error_log,
4685 "Failed to unixify @INC element \"%s\"\n",
4686 SvPV_nolen_const(libdir));
4690 /* Do the if() outside the #ifdef to avoid warnings about an unused
4693 #ifdef PERL_RELOCATABLE_INC
4695 * Relocatable include entries are marked with a leading .../
4698 * 0: Remove that leading ".../"
4699 * 1: Remove trailing executable name (anything after the last '/')
4700 * from the perl path to give a perl prefix
4702 * While the @INC element starts "../" and the prefix ends with a real
4703 * directory (ie not . or ..) chop that real directory off the prefix
4704 * and the leading "../" from the @INC element. ie a logical "../"
4706 * Finally concatenate the prefix and the remainder of the @INC element
4707 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4708 * generates /usr/local/lib/perl5
4710 const char *libpath = SvPVX(libdir);
4711 STRLEN libpath_len = SvCUR(libdir);
4712 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4714 SV * const caret_X = get_sv("\030", 0);
4715 /* Going to use the SV just as a scratch buffer holding a C
4721 /* $^X is *the* source of taint if tainting is on, hence
4722 SvPOK() won't be true. */
4724 assert(SvPOKp(caret_X));
4725 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4727 /* Firstly take off the leading .../
4728 If all else fail we'll do the paths relative to the current
4730 sv_chop(libdir, libpath + 4);
4731 /* Don't use SvPV as we're intentionally bypassing taining,
4732 mortal copies that the mg_get of tainting creates, and
4733 corruption that seems to come via the save stack.
4734 I guess that the save stack isn't correctly set up yet. */
4735 libpath = SvPVX(libdir);
4736 libpath_len = SvCUR(libdir);
4738 /* This would work more efficiently with memrchr, but as it's
4739 only a GNU extension we'd need to probe for it and
4740 implement our own. Not hard, but maybe not worth it? */
4742 prefix = SvPVX(prefix_sv);
4743 lastslash = strrchr(prefix, '/');
4745 /* First time in with the *lastslash = '\0' we just wipe off
4746 the trailing /perl from (say) /usr/foo/bin/perl
4750 while ((*lastslash = '\0'), /* Do that, come what may. */
4751 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4752 && (lastslash = strrchr(prefix, '/')))) {
4753 if (lastslash[1] == '\0'
4754 || (lastslash[1] == '.'
4755 && (lastslash[2] == '/' /* ends "/." */
4756 || (lastslash[2] == '/'
4757 && lastslash[3] == '/' /* or "/.." */
4759 /* Prefix ends "/" or "/." or "/..", any of which
4760 are fishy, so don't do any more logical cleanup.
4764 /* Remove leading "../" from path */
4767 /* Next iteration round the loop removes the last
4768 directory name from prefix by writing a '\0' in
4769 the while clause. */
4771 /* prefix has been terminated with a '\0' to the correct
4772 length. libpath points somewhere into the libdir SV.
4773 We need to join the 2 with '/' and drop the result into
4775 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4776 SvREFCNT_dec(libdir);
4777 /* And this is the new libdir. */
4780 (PerlProc_getuid() != PerlProc_geteuid() ||
4781 PerlProc_getgid() != PerlProc_getegid())) {
4782 /* Need to taint relocated paths if running set ID */
4783 SvTAINTED_on(libdir);
4786 SvREFCNT_dec(prefix_sv);
4794 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4796 #ifndef PERL_IS_MINIPERL
4797 const U8 using_sub_dirs
4798 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4799 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4800 const U8 add_versioned_sub_dirs
4801 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4802 const U8 add_archonly_sub_dirs
4803 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4804 #ifdef PERL_INC_VERSION_LIST
4805 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4808 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4809 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4810 AV *const inc = GvAVn(PL_incgv);
4812 PERL_ARGS_ASSERT_INCPUSH;
4815 /* Could remove this vestigial extra block, if we don't mind a lot of
4816 re-indenting diff noise. */
4818 SV *const libdir = mayberelocate(dir, len, flags);
4819 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4820 arranged to unshift #! line -I onto the front of @INC. However,
4821 -I can add version and architecture specific libraries, and they
4822 need to go first. The old code assumed that it was always
4823 pushing. Hence to make it work, need to push the architecture
4824 (etc) libraries onto a temporary array, then "unshift" that onto
4825 the front of @INC. */
4826 #ifndef PERL_IS_MINIPERL
4827 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4830 * BEFORE pushing libdir onto @INC we may first push version- and
4831 * archname-specific sub-directories.
4833 if (using_sub_dirs) {
4834 SV *subdir = newSVsv(libdir);
4835 #ifdef PERL_INC_VERSION_LIST
4836 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4837 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4838 const char * const *incver;
4841 if (add_versioned_sub_dirs) {
4842 /* .../version/archname if -d .../version/archname */
4843 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4844 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4846 /* .../version if -d .../version */
4847 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4848 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4851 #ifdef PERL_INC_VERSION_LIST
4853 for (incver = incverlist; *incver; incver++) {
4854 /* .../xxx if -d .../xxx */
4855 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4856 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4861 if (add_archonly_sub_dirs) {
4862 /* .../archname if -d .../archname */
4863 sv_catpvs(subdir, "/" ARCHNAME);
4864 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4868 assert (SvREFCNT(subdir) == 1);
4869 SvREFCNT_dec(subdir);
4871 #endif /* !PERL_IS_MINIPERL */
4872 /* finally add this lib directory at the end of @INC */
4874 #ifdef PERL_IS_MINIPERL
4875 const Size_t extra = 0;
4877 Size_t extra = av_tindex(av) + 1;
4879 av_unshift(inc, extra + push_basedir);
4881 av_store(inc, extra, libdir);
4882 #ifndef PERL_IS_MINIPERL
4884 /* av owns a reference, av_store() expects to be donated a
4885 reference, and av expects to be sane when it's cleared.
4886 If I wanted to be naughty and wrong, I could peek inside the
4887 implementation of av_clear(), realise that it uses
4888 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4889 and so directly steal from it (with a memcpy() to inc, and
4890 then memset() to NULL them out. But people copy code from the
4891 core expecting it to be best practise, so let's use the API.
4892 Although studious readers will note that I'm not checking any
4894 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4899 else if (push_basedir) {
4900 av_push(inc, libdir);
4903 if (!push_basedir) {
4904 assert (SvREFCNT(libdir) == 1);
4905 SvREFCNT_dec(libdir);
4911 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4915 /* This logic has been broken out from S_incpush(). It may be possible to
4918 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4920 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4921 * argument to incpush_use_sep. This allows creation of relocatable
4922 * Perl distributions that patch the binary at install time. Those
4923 * distributions will have to provide their own relocation tools; this
4924 * is not a feature otherwise supported by core Perl.
4926 #ifndef PERL_RELOCATABLE_INCPUSH
4933 /* Break at all separators */
4934 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4936 /* skip any consecutive separators */
4938 /* Uncomment the next line for PATH semantics */
4939 /* But you'll need to write tests */
4940 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4942 incpush(p, (STRLEN)(s - p), flags);
4947 incpush(p, (STRLEN)(end - p), flags);
4952 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4955 VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4961 PERL_ARGS_ASSERT_CALL_LIST;
4963 while (av_tindex(paramList) >= 0) {
4964 cv = MUTABLE_CV(av_shift(paramList));
4966 if (paramList == PL_beginav) {
4967 /* save PL_beginav for compiler */
4968 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4970 else if (paramList == PL_checkav) {
4971 /* save PL_checkav for compiler */
4972 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4974 else if (paramList == PL_unitcheckav) {
4975 /* save PL_unitcheckav for compiler */
4976 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4986 (void)SvPV_const(atsv, len);
4988 PL_curcop = &PL_compiling;
4989 CopLINE_set(PL_curcop, oldline);
4990 if (paramList == PL_beginav)
4991 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4993 Perl_sv_catpvf(aTHX_ atsv,
4994 "%s failed--call queue aborted",
4995 paramList == PL_checkav ? "CHECK"
4996 : paramList == PL_initav ? "INIT"
4997 : paramList == PL_unitcheckav ? "UNITCHECK"
4999 while (PL_scopestack_ix > oldscope)
5002 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
5009 /* my_exit() was called */
5010 while (PL_scopestack_ix > oldscope)
5013 SET_CURSTASH(PL_defstash);
5014 PL_curcop = &PL_compiling;
5015 CopLINE_set(PL_curcop, oldline);
5018 NOT_REACHED; /* NOTREACHED */
5021 PL_curcop = &PL_compiling;
5022 CopLINE_set(PL_curcop, oldline);
5025 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
5034 Perl_my_exit(pTHX_ U32 status)
5036 if (PL_exit_flags & PERL_EXIT_ABORT) {
5039 if (PL_exit_flags & PERL_EXIT_WARN) {
5040 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5041 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
5042 PL_exit_flags &= ~PERL_EXIT_ABORT;
5052 STATUS_EXIT_SET(status);
5059 Perl_my_failure_exit(pTHX)
5062 /* We have been called to fall on our sword. The desired exit code
5063 * should be already set in STATUS_UNIX, but could be shifted over
5064 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5067 * If an error code has not been set, then force the issue.
5069 if (MY_POSIX_EXIT) {
5071 /* According to the die_exit.t tests, if errno is non-zero */
5072 /* It should be used for the error status. */
5074 if (errno == EVMSERR) {
5075 STATUS_NATIVE = vaxc$errno;
5078 /* According to die_exit.t tests, if the child_exit code is */
5079 /* also zero, then we need to exit with a code of 255 */
5080 if ((errno != 0) && (errno < 256))
5081 STATUS_UNIX_EXIT_SET(errno);
5082 else if (STATUS_UNIX < 255) {
5083 STATUS_UNIX_EXIT_SET(255);
5088 /* The exit code could have been set by $? or vmsish which
5089 * means that it may not have fatal set. So convert
5090 * success/warning codes to fatal with out changing
5091 * the POSIX status code. The severity makes VMS native
5092 * status handling work, while UNIX mode programs use the
5093 * the POSIX exit codes.
5095 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5096 STATUS_NATIVE &= STS$M_COND_ID;
5097 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5101 /* Traditionally Perl on VMS always expects a Fatal Error. */
5102 if (vaxc$errno & 1) {
5104 /* So force success status to failure */
5105 if (STATUS_NATIVE & 1)
5110 STATUS_UNIX = EINTR; /* In case something cares */
5115 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5117 /* Encode the severity code */
5118 severity = STATUS_NATIVE & STS$M_SEVERITY;
5119 STATUS_UNIX = (severity ? severity : 1) << 8;
5121 /* Perl expects this to be a fatal error */
5122 if (severity != STS$K_SEVERE)
5131 STATUS_UNIX_SET(errno);
5133 exitstatus = STATUS_UNIX >> 8;
5134 if (exitstatus & 255)
5135 STATUS_UNIX_SET(exitstatus);
5137 STATUS_UNIX_SET(255);
5140 if (PL_exit_flags & PERL_EXIT_ABORT) {
5143 if (PL_exit_flags & PERL_EXIT_WARN) {
5144 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5145 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5146 PL_exit_flags &= ~PERL_EXIT_ABORT;
5152 S_my_exit_jump(pTHX)
5155 SvREFCNT_dec(PL_e_script);
5159 POPSTACK_TO(PL_mainstack);
5160 if (cxstack_ix >= 0) {
5162 cx_popblock(cxstack);
5170 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5172 const char * const p = SvPVX_const(PL_e_script);
5173 const char *nl = strchr(p, '\n');
5175 PERL_UNUSED_ARG(idx);
5176 PERL_UNUSED_ARG(maxlen);
5178 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5180 filter_del(read_e_script);
5183 sv_catpvn(buf_sv, p, nl-p);
5184 sv_chop(PL_e_script, nl);
5188 /* removes boilerplate code at the end of each boot_Module xsub */
5190 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5193 call_list(PL_scopestack_ix, PL_unitcheckav);
5198 * ex: set ts=8 sts=4 sw=4 et: