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_OP_PARENT
1779 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1780 " PERL_PERTURB_KEYS_DETERMINISTIC"
1782 # ifdef PERL_PERTURB_KEYS_DISABLED
1783 " PERL_PERTURB_KEYS_DISABLED"
1785 # ifdef PERL_PERTURB_KEYS_RANDOM
1786 " PERL_PERTURB_KEYS_RANDOM"
1788 # ifdef PERL_PRESERVE_IVUV
1789 " PERL_PRESERVE_IVUV"
1791 # ifdef PERL_RELOCATABLE_INCPUSH
1792 " PERL_RELOCATABLE_INCPUSH"
1794 # ifdef PERL_USE_DEVEL
1797 # ifdef PERL_USE_SAFE_PUTENV
1798 " PERL_USE_SAFE_PUTENV"
1800 # ifdef SILENT_NO_TAINT_SUPPORT
1801 " SILENT_NO_TAINT_SUPPORT"
1803 # ifdef UNLINK_ALL_VERSIONS
1804 " UNLINK_ALL_VERSIONS"
1806 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1807 " USE_ATTRIBUTES_FOR_PERLIO"
1809 # ifdef USE_FAST_STDIO
1812 # ifdef USE_HASH_SEED_EXPLICIT
1813 " USE_HASH_SEED_EXPLICIT"
1818 # ifdef USE_LOCALE_CTYPE
1821 # ifdef WIN32_NO_REGISTRY
1824 # ifdef USE_PERL_ATOF
1827 # ifdef USE_SITECUSTOMIZE
1828 " USE_SITECUSTOMIZE"
1831 PERL_UNUSED_ARG(cv);
1832 PERL_UNUSED_VAR(items);
1834 EXTEND(SP, entries);
1836 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1837 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1838 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1840 #ifndef PERL_BUILD_DATE
1843 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1845 # define PERL_BUILD_DATE __DATE__
1850 #ifdef PERL_BUILD_DATE
1851 PUSHs(Perl_newSVpvn_flags(aTHX_
1852 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1855 PUSHs(&PL_sv_undef);
1858 for (i = 1; i <= local_patch_count; i++) {
1859 /* This will be an undef, if PL_localpatches[i] is NULL. */
1860 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1866 #define INCPUSH_UNSHIFT 0x01
1867 #define INCPUSH_ADD_OLD_VERS 0x02
1868 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1869 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1870 #define INCPUSH_NOT_BASEDIR 0x10
1871 #define INCPUSH_CAN_RELOCATE 0x20
1872 #define INCPUSH_ADD_SUB_DIRS \
1873 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1876 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1880 int argc = PL_origargc;
1881 char **argv = PL_origargv;
1882 const char *scriptname = NULL;
1883 bool dosearch = FALSE;
1885 bool doextract = FALSE;
1886 const char *cddir = NULL;
1887 #ifdef USE_SITECUSTOMIZE
1888 bool minus_f = FALSE;
1890 SV *linestr_sv = NULL;
1891 bool add_read_e_script = FALSE;
1892 U32 lex_start_flags = 0;
1894 PERL_SET_PHASE(PERL_PHASE_START);
1900 for (argc--,argv++; argc > 0; argc--,argv++) {
1901 if (argv[0][0] != '-' || !argv[0][1])
1907 #ifndef PERL_STRICT_CR
1931 if ((s = moreswitches(s)))
1936 #if defined(SILENT_NO_TAINT_SUPPORT)
1937 /* silently ignore */
1938 #elif defined(NO_TAINT_SUPPORT)
1939 Perl_croak_nocontext("This perl was compiled without taint support. "
1940 "Cowardly refusing to run with -t or -T flags");
1942 CHECK_MALLOC_TOO_LATE_FOR('t');
1943 if( !TAINTING_get ) {
1944 TAINT_WARN_set(TRUE);
1951 #if defined(SILENT_NO_TAINT_SUPPORT)
1952 /* silently ignore */
1953 #elif defined(NO_TAINT_SUPPORT)
1954 Perl_croak_nocontext("This perl was compiled without taint support. "
1955 "Cowardly refusing to run with -t or -T flags");
1957 CHECK_MALLOC_TOO_LATE_FOR('T');
1959 TAINT_WARN_set(FALSE);
1968 forbid_setid('e', FALSE);
1970 PL_e_script = newSVpvs("");
1971 add_read_e_script = TRUE;
1974 sv_catpv(PL_e_script, s);
1976 sv_catpv(PL_e_script, argv[1]);
1980 Perl_croak(aTHX_ "No code specified for -%c", c);
1981 sv_catpvs(PL_e_script, "\n");
1985 #ifdef USE_SITECUSTOMIZE
1991 case 'I': /* -I handled both here and in moreswitches() */
1992 forbid_setid('I', FALSE);
1993 if (!*++s && (s=argv[1]) != NULL) {
1997 STRLEN len = strlen(s);
1998 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
2001 Perl_croak(aTHX_ "No directory specified for -I");
2004 forbid_setid('S', FALSE);
2013 opts_prog = newSVpvs("use Config; Config::_V()");
2017 opts_prog = Perl_newSVpvf(aTHX_
2018 "use Config; Config::config_vars(qw%c%s%c)",
2022 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2023 /* don't look for script or read stdin */
2024 scriptname = BIT_BUCKET;
2036 if (!*++s || isSPACE(*s)) {
2040 /* catch use of gnu style long options.
2041 Both of these exit immediately. */
2042 if (strEQ(s, "version"))
2044 if (strEQ(s, "help"))
2049 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2060 #ifndef SECURE_INTERNAL_GETENV
2063 (s = PerlEnv_getenv("PERL5OPT")))
2065 /* s points to static memory in getenv(), which may be overwritten at
2066 * any time; use a mortal copy instead */
2067 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2071 if (*s == '-' && *(s+1) == 'T') {
2072 #if defined(SILENT_NO_TAINT_SUPPORT)
2073 /* silently ignore */
2074 #elif defined(NO_TAINT_SUPPORT)
2075 Perl_croak_nocontext("This perl was compiled without taint support. "
2076 "Cowardly refusing to run with -t or -T flags");
2078 CHECK_MALLOC_TOO_LATE_FOR('T');
2080 TAINT_WARN_set(FALSE);
2084 char *popt_copy = NULL;
2097 if (!strchr("CDIMUdmtwW", *s))
2098 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2102 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2103 s = popt_copy + (s - d);
2111 #if defined(SILENT_NO_TAINT_SUPPORT)
2112 /* silently ignore */
2113 #elif defined(NO_TAINT_SUPPORT)
2114 Perl_croak_nocontext("This perl was compiled without taint support. "
2115 "Cowardly refusing to run with -t or -T flags");
2117 if( !TAINTING_get) {
2118 TAINT_WARN_set(TRUE);
2130 /* Set $^X early so that it can be used for relocatable paths in @INC */
2131 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2132 assert (!TAINT_get);
2137 #if defined(USE_SITECUSTOMIZE)
2139 /* The games with local $! are to avoid setting errno if there is no
2140 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2141 ie a q() operator with a NUL byte as a the delimiter. This avoids
2142 problems with pathnames containing (say) ' */
2143 # ifdef PERL_IS_MINIPERL
2144 AV *const inc = GvAV(PL_incgv);
2145 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2148 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2149 it should be reported immediately as a build failure. */
2150 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2152 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2153 "do {local $!; -f $f }"
2154 " and do $f || die $@ || qq '$f: $!' }",
2155 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2158 /* SITELIB_EXP is a function call on Win32. */
2159 const char *const raw_sitelib = SITELIB_EXP;
2161 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2162 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2163 INCPUSH_CAN_RELOCATE);
2164 const char *const sitelib = SvPVX(sitelib_sv);
2165 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2167 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2168 0, SVfARG(sitelib), 0,
2169 0, SVfARG(sitelib), 0));
2170 assert (SvREFCNT(sitelib_sv) == 1);
2171 SvREFCNT_dec(sitelib_sv);
2178 scriptname = argv[0];
2181 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2183 else if (scriptname == NULL) {
2185 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2191 assert (!TAINT_get);
2195 bool suidscript = FALSE;
2197 rsfp = open_script(scriptname, dosearch, &suidscript);
2199 rsfp = PerlIO_stdin();
2200 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2203 validate_suid(rsfp);
2206 # if defined(SIGCHLD) || defined(SIGCLD)
2209 # define SIGCHLD SIGCLD
2211 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2212 if (sigstate == (Sighandler_t) SIG_IGN) {
2213 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2214 "Can't ignore signal CHLD, forcing to default");
2215 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2223 /* This will croak if suidscript is true, as -x cannot be used with
2225 forbid_setid('x', suidscript);
2226 /* Hence you can't get here if suidscript is true */
2228 linestr_sv = newSV_type(SVt_PV);
2229 lex_start_flags |= LEX_START_COPIED;
2230 find_beginning(linestr_sv, rsfp);
2231 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2232 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2236 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2237 CvUNIQUE_on(PL_compcv);
2239 CvPADLIST_set(PL_compcv, pad_new(0));
2241 PL_isarev = newHV();
2244 boot_core_UNIVERSAL();
2246 newXS("Internals::V", S_Internals_V, __FILE__);
2249 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2251 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2257 # ifdef HAS_SOCKS5_INIT
2258 socks5_init(argv[0]);
2264 init_predump_symbols();
2265 /* init_postdump_symbols not currently designed to be called */
2266 /* more than once (ENV isn't cleared first, for example) */
2267 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2269 init_postdump_symbols(argc,argv,env);
2271 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2272 * or explicitly in some platforms.
2273 * locale.c:Perl_init_i18nl10n() if the environment
2274 * look like the user wants to use UTF-8. */
2275 #if defined(__SYMBIAN32__)
2276 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2278 # ifndef PERL_IS_MINIPERL
2280 /* Requires init_predump_symbols(). */
2281 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2286 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2287 * and the default open disciplines. */
2288 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2289 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2291 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2292 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2293 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2295 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2296 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2297 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2299 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2300 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2301 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2303 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2304 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2307 sv_setpvs(sv, ":utf8\0:utf8");
2309 sv_setpvs(sv, ":utf8\0");
2312 sv_setpvs(sv, "\0:utf8");
2321 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2322 if (strEQ(s, "unsafe"))
2323 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2324 else if (strEQ(s, "safe"))
2325 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2327 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2332 lex_start(linestr_sv, rsfp, lex_start_flags);
2333 SvREFCNT_dec(linestr_sv);
2335 PL_subname = newSVpvs("main");
2337 if (add_read_e_script)
2338 filter_add(read_e_script, NULL);
2340 /* now parse the script */
2342 SETERRNO(0,SS_NORMAL);
2343 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2345 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2347 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2351 CopLINE_set(PL_curcop, 0);
2352 SET_CURSTASH(PL_defstash);
2354 SvREFCNT_dec(PL_e_script);
2362 SAVECOPFILE(PL_curcop);
2363 SAVECOPLINE(PL_curcop);
2364 gv_check(PL_defstash);
2374 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2375 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2376 dump_mstats("after compilation:");
2381 PL_restartjmpenv = NULL;
2387 =for apidoc perl_run
2389 Tells a Perl interpreter to run. See L<perlembed>.
2401 PERL_ARGS_ASSERT_PERL_RUN;
2402 #ifndef MULTIPLICITY
2403 PERL_UNUSED_ARG(my_perl);
2406 oldscope = PL_scopestack_ix;
2414 cxstack_ix = -1; /* start context stack again */
2416 case 0: /* normal completion */
2420 case 2: /* my_exit() */
2421 while (PL_scopestack_ix > oldscope)
2424 SET_CURSTASH(PL_defstash);
2425 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2426 PL_endav && !PL_minus_c) {
2427 PERL_SET_PHASE(PERL_PHASE_END);
2428 call_list(oldscope, PL_endav);
2431 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2432 dump_mstats("after execution: ");
2438 POPSTACK_TO(PL_mainstack);
2441 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2452 S_run_body(pTHX_ I32 oldscope)
2454 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2455 PL_sawampersand ? "Enabling" : "Omitting",
2456 (unsigned int)(PL_sawampersand)));
2458 if (!PL_restartop) {
2460 if (DEBUG_x_TEST || DEBUG_B_TEST)
2461 dump_all_perl(!DEBUG_B_TEST);
2463 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2467 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2470 if (PERLDB_SINGLE && PL_DBsingle)
2473 PERL_SET_PHASE(PERL_PHASE_INIT);
2474 call_list(oldscope, PL_initav);
2476 #ifdef PERL_DEBUG_READONLY_OPS
2477 if (PL_main_root && PL_main_root->op_slabbed)
2478 Slab_to_ro(OpSLAB(PL_main_root));
2484 PERL_SET_PHASE(PERL_PHASE_RUN);
2487 PL_restartjmpenv = NULL;
2488 PL_op = PL_restartop;
2492 else if (PL_main_start) {
2493 CvDEPTH(PL_main_cv) = 1;
2494 PL_op = PL_main_start;
2498 NOT_REACHED; /* NOTREACHED */
2502 =head1 SV Manipulation Functions
2504 =for apidoc p||get_sv
2506 Returns the SV of the specified Perl scalar. C<flags> are passed to
2507 C<gv_fetchpv>. If C<GV_ADD> is set and the
2508 Perl variable does not exist then it will be created. If C<flags> is zero
2509 and the variable does not exist then NULL is returned.
2515 Perl_get_sv(pTHX_ const char *name, I32 flags)
2519 PERL_ARGS_ASSERT_GET_SV;
2521 gv = gv_fetchpv(name, flags, SVt_PV);
2528 =head1 Array Manipulation Functions
2530 =for apidoc p||get_av
2532 Returns the AV of the specified Perl global or package array with the given
2533 name (so it won't work on lexical variables). C<flags> are passed
2534 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2535 Perl variable does not exist then it will be created. If C<flags> is zero
2536 and the variable does not exist then NULL is returned.
2538 Perl equivalent: C<@{"$name"}>.
2544 Perl_get_av(pTHX_ const char *name, I32 flags)
2546 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2548 PERL_ARGS_ASSERT_GET_AV;
2558 =head1 Hash Manipulation Functions
2560 =for apidoc p||get_hv
2562 Returns the HV of the specified Perl hash. C<flags> are passed to
2563 C<gv_fetchpv>. If C<GV_ADD> is set and the
2564 Perl variable does not exist then it will be created. If C<flags> is zero
2565 and the variable does not exist then C<NULL> is returned.
2571 Perl_get_hv(pTHX_ const char *name, I32 flags)
2573 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2575 PERL_ARGS_ASSERT_GET_HV;
2585 =head1 CV Manipulation Functions
2587 =for apidoc p||get_cvn_flags
2589 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2590 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2591 exist then it will be declared (which has the same effect as saying
2592 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2593 then NULL is returned.
2595 =for apidoc p||get_cv
2597 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2603 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2605 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2607 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2609 /* XXX this is probably not what they think they're getting.
2610 * It has the same effect as "sub name;", i.e. just a forward
2612 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2613 return newSTUB(gv,0);
2620 /* Nothing in core calls this now, but we can't replace it with a macro and
2621 move it to mathoms.c as a macro would evaluate name twice. */
2623 Perl_get_cv(pTHX_ const char *name, I32 flags)
2625 PERL_ARGS_ASSERT_GET_CV;
2627 return get_cvn_flags(name, strlen(name), flags);
2630 /* Be sure to refetch the stack pointer after calling these routines. */
2634 =head1 Callback Functions
2636 =for apidoc p||call_argv
2638 Performs a callback to the specified named and package-scoped Perl subroutine
2639 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2642 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2648 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2650 /* See G_* flags in cop.h */
2651 /* null terminated arg list */
2655 PERL_ARGS_ASSERT_CALL_ARGV;
2659 mXPUSHs(newSVpv(*argv,0));
2663 return call_pv(sub_name, flags);
2667 =for apidoc p||call_pv
2669 Performs a callback to the specified Perl sub. See L<perlcall>.
2675 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2676 /* name of the subroutine */
2677 /* See G_* flags in cop.h */
2679 PERL_ARGS_ASSERT_CALL_PV;
2681 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2685 =for apidoc p||call_method
2687 Performs a callback to the specified Perl method. The blessed object must
2688 be on the stack. See L<perlcall>.
2694 Perl_call_method(pTHX_ const char *methname, I32 flags)
2695 /* name of the subroutine */
2696 /* See G_* flags in cop.h */
2700 PERL_ARGS_ASSERT_CALL_METHOD;
2702 len = strlen(methname);
2703 sv = flags & G_METHOD_NAMED
2704 ? sv_2mortal(newSVpvn_share(methname, len,0))
2705 : newSVpvn_flags(methname, len, SVs_TEMP);
2707 return call_sv(sv, flags | G_METHOD);
2710 /* May be called with any of a CV, a GV, or an SV containing the name. */
2712 =for apidoc p||call_sv
2714 Performs a callback to the Perl sub specified by the SV.
2716 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2717 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2718 or C<SvPV(sv)> will be used as the name of the sub to call.
2720 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2721 C<SvPV(sv)> will be used as the name of the method to call.
2723 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2724 the name of the method to call.
2726 Some other values are treated specially for internal use and should
2735 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2736 /* See G_* flags in cop.h */
2739 LOGOP myop; /* fake syntax tree node */
2743 bool oldcatch = CATCH_GET;
2745 OP* const oldop = PL_op;
2748 PERL_ARGS_ASSERT_CALL_SV;
2750 if (flags & G_DISCARD) {
2754 if (!(flags & G_WANT)) {
2755 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2760 Zero(&myop, 1, LOGOP);
2761 if (!(flags & G_NOARGS))
2762 myop.op_flags |= OPf_STACKED;
2763 myop.op_flags |= OP_GIMME_REVERSE(flags);
2767 if (!(flags & G_METHOD_NAMED)) {
2775 if (PERLDB_SUB && PL_curstash != PL_debstash
2776 /* Handle first BEGIN of -d. */
2777 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2778 /* Try harder, since this may have been a sighandler, thus
2779 * curstash may be meaningless. */
2780 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2781 && !(flags & G_NODEBUG))
2782 myop.op_private |= OPpENTERSUB_DB;
2784 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2785 Zero(&method_op, 1, METHOP);
2786 method_op.op_next = (OP*)&myop;
2787 PL_op = (OP*)&method_op;
2788 if ( flags & G_METHOD_NAMED ) {
2789 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2790 method_op.op_type = OP_METHOD_NAMED;
2791 method_op.op_u.op_meth_sv = sv;
2793 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2794 method_op.op_type = OP_METHOD;
2796 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2797 myop.op_type = OP_ENTERSUB;
2800 if (!(flags & G_EVAL)) {
2802 CALL_BODY_SUB((OP*)&myop);
2803 retval = PL_stack_sp - (PL_stack_base + oldmark);
2804 CATCH_SET(oldcatch);
2808 myop.op_other = (OP*)&myop;
2810 old_cxix = cxstack_ix;
2811 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2819 CALL_BODY_SUB((OP*)&myop);
2820 retval = PL_stack_sp - (PL_stack_base + oldmark);
2821 if (!(flags & G_KEEPERR)) {
2829 /* my_exit() was called */
2830 SET_CURSTASH(PL_defstash);
2834 NOT_REACHED; /* NOTREACHED */
2837 PL_restartjmpenv = NULL;
2838 PL_op = PL_restartop;
2842 PL_stack_sp = PL_stack_base + oldmark;
2843 if ((flags & G_WANT) == G_ARRAY)
2847 *++PL_stack_sp = &PL_sv_undef;
2852 /* if we croaked, depending on how we croaked the eval scope
2853 * may or may not have already been popped */
2854 if (cxstack_ix > old_cxix) {
2855 assert(cxstack_ix == old_cxix + 1);
2856 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2857 delete_eval_scope();
2862 if (flags & G_DISCARD) {
2863 PL_stack_sp = PL_stack_base + oldmark;
2872 /* Eval a string. The G_EVAL flag is always assumed. */
2875 =for apidoc p||eval_sv
2877 Tells Perl to C<eval> the string in the SV. It supports the same flags
2878 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2884 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2886 /* See G_* flags in cop.h */
2889 UNOP myop; /* fake syntax tree node */
2893 OP* const oldop = PL_op;
2896 PERL_ARGS_ASSERT_EVAL_SV;
2898 if (flags & G_DISCARD) {
2905 Zero(&myop, 1, UNOP);
2908 oldmark = SP - PL_stack_base;
2914 if (!(flags & G_NOARGS))
2915 myop.op_flags = OPf_STACKED;
2916 myop.op_type = OP_ENTEREVAL;
2917 myop.op_flags |= OP_GIMME_REVERSE(flags);
2918 if (flags & G_KEEPERR)
2919 myop.op_flags |= OPf_SPECIAL;
2921 if (flags & G_RE_REPARSING)
2922 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2924 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2925 * before a cx_pusheval(), which corrupts the stack after a croak */
2926 TAINT_PROPER("eval_sv()");
2932 if (PL_op == (OP*)(&myop)) {
2933 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2935 goto fail; /* failed in compilation */
2938 retval = PL_stack_sp - (PL_stack_base + oldmark);
2939 if (!(flags & G_KEEPERR)) {
2947 /* my_exit() was called */
2948 SET_CURSTASH(PL_defstash);
2952 NOT_REACHED; /* NOTREACHED */
2955 PL_restartjmpenv = NULL;
2956 PL_op = PL_restartop;
2961 PL_stack_sp = PL_stack_base + oldmark;
2962 if ((flags & G_WANT) == G_ARRAY)
2966 *++PL_stack_sp = &PL_sv_undef;
2972 if (flags & G_DISCARD) {
2973 PL_stack_sp = PL_stack_base + oldmark;
2983 =for apidoc p||eval_pv
2985 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2991 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2993 SV* sv = newSVpv(p, 0);
2995 PERL_ARGS_ASSERT_EVAL_PV;
2997 eval_sv(sv, G_SCALAR);
3006 /* just check empty string or undef? */
3007 if (croak_on_error) {
3008 SV * const errsv = ERRSV;
3009 if(SvTRUE_NN(errsv))
3010 /* replace with croak_sv? */
3011 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3017 /* Require a module. */
3020 =head1 Embedding Functions
3022 =for apidoc p||require_pv
3024 Tells Perl to C<require> the file named by the string argument. It is
3025 analogous to the Perl code C<eval "require '$file'">. It's even
3026 implemented that way; consider using load_module instead.
3031 Perl_require_pv(pTHX_ const char *pv)
3036 PERL_ARGS_ASSERT_REQUIRE_PV;
3038 PUSHSTACKi(PERLSI_REQUIRE);
3039 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3040 eval_sv(sv_2mortal(sv), G_DISCARD);
3045 S_usage(pTHX) /* XXX move this out into a module ? */
3047 /* This message really ought to be max 23 lines.
3048 * Removed -h because the user already knows that option. Others? */
3050 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3051 minimum of 509 character string literals. */
3052 static const char * const usage_msg[] = {
3053 " -0[octal] specify record separator (\\0, if no argument)\n"
3054 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3055 " -C[number/list] enables the listed Unicode features\n"
3056 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3057 " -d[:debugger] run program under debugger\n"
3058 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3059 " -e program one line of program (several -e's allowed, omit programfile)\n"
3060 " -E program like -e, but enables all optional features\n"
3061 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3062 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3063 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3064 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3065 " -l[octal] enable line ending processing, specifies line terminator\n"
3066 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3067 " -n assume \"while (<>) { ... }\" loop around program\n"
3068 " -p assume loop like -n but print line also, like sed\n"
3069 " -s enable rudimentary parsing for switches after programfile\n"
3070 " -S look for programfile using PATH environment variable\n",
3071 " -t enable tainting warnings\n"
3072 " -T enable tainting checks\n"
3073 " -u dump core after parsing program\n"
3074 " -U allow unsafe operations\n"
3075 " -v print version, patchlevel and license\n"
3076 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3077 " -w enable many useful warnings\n"
3078 " -W enable all warnings\n"
3079 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3080 " -X disable all warnings\n"
3082 "Run 'perldoc perl' for more help with Perl.\n\n",
3085 const char * const *p = usage_msg;
3086 PerlIO *out = PerlIO_stdout();
3089 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3092 PerlIO_puts(out, *p++);
3096 /* convert a string of -D options (or digits) into an int.
3097 * sets *s to point to the char after the options */
3101 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3103 static const char * const usage_msgd[] = {
3104 " Debugging flag values: (see also -d)\n"
3105 " p Tokenizing and parsing (with v, displays parse stack)\n"
3106 " s Stack snapshots (with v, displays all stacks)\n"
3107 " l Context (loop) stack processing\n"
3108 " t Trace execution\n"
3109 " o Method and overloading resolution\n",
3110 " c String/numeric conversions\n"
3111 " P Print profiling info, source file input state\n"
3112 " m Memory and SV allocation\n"
3113 " f Format processing\n"
3114 " r Regular expression parsing and execution\n"
3115 " x Syntax tree dump\n",
3116 " u Tainting checks\n"
3117 " H Hash dump -- usurps values()\n"
3118 " X Scratchpad allocation\n"
3120 " S Op slab allocation\n"
3122 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3123 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3124 " v Verbose: use in conjunction with other flags\n"
3125 " C Copy On Write\n"
3126 " A Consistency checks on internal structures\n"
3127 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3128 " M trace smart match resolution\n"
3129 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3130 " L trace some locale setting information--for Perl core development\n",
3135 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3138 /* if adding extra options, remember to update DEBUG_MASK */
3139 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3141 for (; isWORDCHAR(**s); (*s)++) {
3142 const char * const d = strchr(debopts,**s);
3144 uv |= 1 << (d - debopts);
3145 else if (ckWARN_d(WARN_DEBUGGING))
3146 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3147 "invalid option -D%c, use -D'' to see choices\n", **s);
3150 else if (isDIGIT(**s)) {
3152 if (grok_atoUV(*s, &uv, &e))
3154 for (; isWORDCHAR(**s); (*s)++) ;
3156 else if (givehelp) {
3157 const char *const *p = usage_msgd;
3158 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3160 return (int)uv; /* ignore any UV->int conversion loss */
3164 /* This routine handles any switches that can be given during run */
3167 Perl_moreswitches(pTHX_ const char *s)
3171 const char option = *s; /* used to remember option in -m/-M code */
3173 PERL_ARGS_ASSERT_MORESWITCHES;
3181 SvREFCNT_dec(PL_rs);
3182 if (s[1] == 'x' && s[2]) {
3183 const char *e = s+=2;
3189 flags = PERL_SCAN_SILENT_ILLDIGIT;
3190 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3191 if (s + numlen < e) {
3192 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3196 PL_rs = newSVpvs("");
3197 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3198 tmps = (U8*)SvPVX(PL_rs);
3199 uvchr_to_utf8(tmps, rschar);
3200 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3205 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3206 if (rschar & ~((U8)~0))
3207 PL_rs = &PL_sv_undef;
3208 else if (!rschar && numlen >= 2)
3209 PL_rs = newSVpvs("");
3211 char ch = (char)rschar;
3212 PL_rs = newSVpvn(&ch, 1);
3215 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3220 PL_unicode = parse_unicode_opts( (const char **)&s );
3221 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3229 while (*s && !isSPACE(*s)) ++s;
3230 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3242 forbid_setid('d', FALSE);
3245 /* -dt indicates to the debugger that threads will be used */
3246 if (*s == 't' && !isWORDCHAR(s[1])) {
3248 my_setenv("PERL5DB_THREADED", "1");
3251 /* The following permits -d:Mod to accepts arguments following an =
3252 in the fashion that -MSome::Mod does. */
3253 if (*s == ':' || *s == '=') {
3260 sv = newSVpvs("no Devel::");
3262 sv = newSVpvs("use Devel::");
3266 end = s + strlen(s);
3268 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3269 while(isWORDCHAR(*s) || *s==':') ++s;
3271 sv_catpvn(sv, start, end - start);
3273 sv_catpvn(sv, start, s-start);
3274 /* Don't use NUL as q// delimiter here, this string goes in the
3276 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3279 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3283 PL_perldb = PERLDB_ALL;
3290 forbid_setid('D', FALSE);
3292 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3293 #else /* !DEBUGGING */
3294 if (ckWARN_d(WARN_DEBUGGING))
3295 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3296 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3297 for (s++; isWORDCHAR(*s); s++) ;
3300 NOT_REACHED; /* NOTREACHED */
3304 NOT_REACHED; /* NOTREACHED */
3307 Safefree(PL_inplace);
3308 #if defined(__CYGWIN__) /* do backup extension automagically */
3309 if (*(s+1) == '\0') {
3310 PL_inplace = savepvs(".bak");
3313 #endif /* __CYGWIN__ */
3315 const char * const start = ++s;
3316 while (*s && !isSPACE(*s))
3319 PL_inplace = savepvn(start, s - start);
3323 if (*s == '-') /* Additional switches on #! line. */
3327 case 'I': /* -I handled both here and in parse_body() */
3328 forbid_setid('I', FALSE);
3330 while (*s && isSPACE(*s))
3335 /* ignore trailing spaces (possibly followed by other switches) */
3337 for (e = p; *e && !isSPACE(*e); e++) ;
3341 } while (*p && *p != '-');
3343 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3349 Perl_croak(aTHX_ "No directory specified for -I");
3355 SvREFCNT_dec(PL_ors_sv);
3361 PL_ors_sv = newSVpvs("\n");
3362 numlen = 3 + (*s == '0');
3363 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3367 if (RsPARA(PL_rs)) {
3368 PL_ors_sv = newSVpvs("\n\n");
3371 PL_ors_sv = newSVsv(PL_rs);
3376 forbid_setid('M', FALSE); /* XXX ? */
3379 forbid_setid('m', FALSE); /* XXX ? */
3384 const char *use = "use ";
3386 /* -M-foo == 'no foo' */
3387 /* Leading space on " no " is deliberate, to make both
3388 possibilities the same length. */
3389 if (*s == '-') { use = " no "; ++s; }
3390 sv = newSVpvn(use,4);
3392 /* We allow -M'Module qw(Foo Bar)' */
3393 while(isWORDCHAR(*s) || *s==':') {
3402 Perl_croak(aTHX_ "Module name required with -%c option",
3405 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3406 "contains single ':'",
3407 (int)(s - start), start, option);
3408 end = s + strlen(s);
3410 sv_catpvn(sv, start, end - start);
3411 if (option == 'm') {
3413 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3414 sv_catpvs( sv, " ()");
3417 sv_catpvn(sv, start, s-start);
3418 /* Use NUL as q''-delimiter. */
3419 sv_catpvs(sv, " split(/,/,q\0");
3421 sv_catpvn(sv, s, end - s);
3422 sv_catpvs(sv, "\0)");
3425 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3428 Perl_croak(aTHX_ "Missing argument to -%c", option);
3439 forbid_setid('s', FALSE);
3440 PL_doswitches = TRUE;
3445 #if defined(SILENT_NO_TAINT_SUPPORT)
3446 /* silently ignore */
3447 #elif defined(NO_TAINT_SUPPORT)
3448 Perl_croak_nocontext("This perl was compiled without taint support. "
3449 "Cowardly refusing to run with -t or -T flags");
3457 PL_do_undump = TRUE;
3467 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3468 PL_dowarn |= G_WARN_ON;
3473 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3474 if (!specialWARN(PL_compiling.cop_warnings))
3475 PerlMemShared_free(PL_compiling.cop_warnings);
3476 PL_compiling.cop_warnings = pWARN_ALL ;
3480 PL_dowarn = G_WARN_ALL_OFF;
3481 if (!specialWARN(PL_compiling.cop_warnings))
3482 PerlMemShared_free(PL_compiling.cop_warnings);
3483 PL_compiling.cop_warnings = pWARN_NONE ;
3490 if (s[0] == '-') /* Additional switches on #! line. */
3495 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3501 #ifdef ALTERNATE_SHEBANG
3502 case 'S': /* OS/2 needs -S on "extproc" line. */
3505 case 'e': case 'f': case 'x': case 'E':
3506 #ifndef ALTERNATE_SHEBANG
3510 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3513 "Unrecognized switch: -%.1s (-h will show valid options)",s
3523 PerlIO * PIO_stdout;
3525 const char * const level_str = "v" PERL_VERSION_STRING;
3526 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3527 #ifdef PERL_PATCHNUM
3529 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3530 static const char num [] = PERL_PATCHNUM "*";
3532 static const char num [] = PERL_PATCHNUM;
3535 const STRLEN num_len = sizeof(num)-1;
3536 /* A very advanced compiler would fold away the strnEQ
3537 and this whole conditional, but most (all?) won't do it.
3538 SV level could also be replaced by with preprocessor
3541 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3542 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3543 of the interp so it might contain format characters
3545 level = newSVpvn(num, num_len);
3547 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3551 SV* level = newSVpvn(level_str, level_len);
3552 #endif /* #ifdef PERL_PATCHNUM */
3553 PIO_stdout = PerlIO_stdout();
3554 PerlIO_printf(PIO_stdout,
3555 "\nThis is perl " STRINGIFY(PERL_REVISION)
3556 ", version " STRINGIFY(PERL_VERSION)
3557 ", subversion " STRINGIFY(PERL_SUBVERSION)
3558 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3560 SvREFCNT_dec_NN(level);
3562 #if defined(LOCAL_PATCH_COUNT)
3563 if (LOCAL_PATCH_COUNT > 0)
3564 PerlIO_printf(PIO_stdout,
3565 "\n(with %d registered patch%s, "
3566 "see perl -V for more detail)",
3568 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3571 PerlIO_printf(PIO_stdout,
3572 "\n\nCopyright 1987-2016, Larry Wall\n");
3574 PerlIO_printf(PIO_stdout,
3575 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3578 PerlIO_printf(PIO_stdout,
3579 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3580 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3583 PerlIO_printf(PIO_stdout,
3584 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3585 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3588 PerlIO_printf(PIO_stdout,
3589 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3592 PerlIO_printf(PIO_stdout,
3593 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3596 PerlIO_printf(PIO_stdout,
3597 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3600 PerlIO_printf(PIO_stdout,
3601 "WINCE port by Rainer Keuchel, 2001-2002\n"
3602 "Built on " __DATE__ " " __TIME__ "\n\n");
3605 #ifdef __SYMBIAN32__
3606 PerlIO_printf(PIO_stdout,
3607 "Symbian port by Nokia, 2004-2005\n");
3609 #ifdef BINARY_BUILD_NOTICE
3610 BINARY_BUILD_NOTICE;
3612 PerlIO_printf(PIO_stdout,
3614 Perl may be copied only under the terms of either the Artistic License or the\n\
3615 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3616 Complete documentation for Perl, including FAQ lists, should be found on\n\
3617 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3618 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3622 /* compliments of Tom Christiansen */
3624 /* unexec() can be found in the Gnu emacs distribution */
3625 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3628 #include <lib$routines.h>
3632 Perl_my_unexec(pTHX)
3635 SV * prog = newSVpv(BIN_EXP, 0);
3636 SV * file = newSVpv(PL_origfilename, 0);
3640 sv_catpvs(prog, "/perl");
3641 sv_catpvs(file, ".perldump");
3643 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3644 /* unexec prints msg to stderr in case of failure */
3645 PerlProc_exit(status);
3647 PERL_UNUSED_CONTEXT;
3649 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3650 # elif defined(WIN32) || defined(__CYGWIN__)
3651 Perl_croak_nocontext("dump is not supported");
3653 ABORT(); /* for use with undump */
3658 /* initialize curinterp */
3663 # define PERLVAR(prefix,var,type)
3664 # define PERLVARA(prefix,var,n,type)
3665 # if defined(PERL_IMPLICIT_CONTEXT)
3666 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3667 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3669 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3670 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3672 # include "intrpvar.h"
3678 # define PERLVAR(prefix,var,type)
3679 # define PERLVARA(prefix,var,n,type)
3680 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3681 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3682 # include "intrpvar.h"
3692 S_init_main_stash(pTHX)
3696 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3697 /* We know that the string "main" will be in the global shared string
3698 table, so it's a small saving to use it rather than allocate another
3700 PL_curstname = newSVpvs_share("main");
3701 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3702 /* If we hadn't caused another reference to "main" to be in the shared
3703 string table above, then it would be worth reordering these two,
3704 because otherwise all we do is delete "main" from it as a consequence
3705 of the SvREFCNT_dec, only to add it again with hv_name_set */
3706 SvREFCNT_dec(GvHV(gv));
3707 hv_name_set(PL_defstash, "main", 4, 0);
3708 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3710 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3712 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3713 GvMULTI_on(PL_incgv);
3714 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3715 SvREFCNT_inc_simple_void(PL_hintgv);
3716 GvMULTI_on(PL_hintgv);
3717 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3718 SvREFCNT_inc_simple_void(PL_defgv);
3719 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3720 SvREFCNT_inc_simple_void(PL_errgv);
3721 GvMULTI_on(PL_errgv);
3722 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3723 SvREFCNT_inc_simple_void(PL_replgv);
3724 GvMULTI_on(PL_replgv);
3725 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3726 #ifdef PERL_DONT_CREATE_GVSV
3727 (void)gv_SVadd(PL_errgv);
3729 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3731 SET_CURSTASH(PL_defstash);
3732 CopSTASH_set(&PL_compiling, PL_defstash);
3733 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3734 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3736 /* We must init $/ before switches are processed. */
3737 sv_setpvs(get_sv("/", GV_ADD), "\n");
3741 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3744 PerlIO *rsfp = NULL;
3748 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3751 PL_origfilename = savepvs("-e");
3756 /* if find_script() returns, it returns a malloc()-ed value */
3757 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3759 if (strnEQ(scriptname, "/dev/fd/", 8)
3760 && isDIGIT(scriptname[8])
3761 && grok_atoUV(scriptname + 8, &uv, &s)
3762 && uv <= PERL_INT_MAX
3767 * Tell apart "normal" usage of fdscript, e.g.
3768 * with bash on FreeBSD:
3769 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3770 * from usage in suidperl.
3771 * Does any "normal" usage leave garbage after the number???
3772 * Is it a mistake to use a similar /dev/fd/ construct for
3777 * Be supersafe and do some sanity-checks.
3778 * Still, can we be sure we got the right thing?
3781 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3784 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3786 scriptname = savepv(s + 1);
3787 Safefree(PL_origfilename);
3788 PL_origfilename = (char *)scriptname;
3793 CopFILE_free(PL_curcop);
3794 CopFILE_set(PL_curcop, PL_origfilename);
3795 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3796 scriptname = (char *)"";
3797 if (fdscript >= 0) {
3798 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3800 else if (!*scriptname) {
3801 forbid_setid(0, *suidscript);
3805 #ifdef FAKE_BIT_BUCKET
3806 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3807 * is called) and still have the "-e" work. (Believe it or not,
3808 * a /dev/null is required for the "-e" to work because source
3809 * filter magic is used to implement it. ) This is *not* a general
3810 * replacement for a /dev/null. What we do here is create a temp
3811 * file (an empty file), open up that as the script, and then
3812 * immediately close and unlink it. Close enough for jazz. */
3813 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3814 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3815 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3816 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3817 FAKE_BIT_BUCKET_TEMPLATE
3819 const char * const err = "Failed to create a fake bit bucket";
3820 if (strEQ(scriptname, BIT_BUCKET)) {
3821 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3822 int old_umask = umask(0177);
3823 int tmpfd = mkstemp(tmpname);
3826 scriptname = tmpname;
3829 Perl_croak(aTHX_ err);
3832 scriptname = mktemp(tmpname);
3834 Perl_croak(aTHX_ err);
3839 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3840 #ifdef FAKE_BIT_BUCKET
3841 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3842 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3843 && strlen(scriptname) == sizeof(tmpname) - 1) {
3846 scriptname = BIT_BUCKET;
3850 /* PSz 16 Sep 03 Keep neat error message */
3852 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3854 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3855 CopFILE(PL_curcop), Strerror(errno));
3857 fd = PerlIO_fileno(rsfp);
3858 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3860 /* ensure close-on-exec */
3861 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3862 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3863 CopFILE(PL_curcop), Strerror(errno));
3869 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3870 && S_ISDIR(tmpstatbuf.st_mode)))
3871 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3879 * I_SYSSTATVFS HAS_FSTATVFS
3881 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3882 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3883 * here so that metaconfig picks them up. */
3886 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3887 /* Don't even need this function. */
3890 S_validate_suid(pTHX_ PerlIO *rsfp)
3892 const Uid_t my_uid = PerlProc_getuid();
3893 const Uid_t my_euid = PerlProc_geteuid();
3894 const Gid_t my_gid = PerlProc_getgid();
3895 const Gid_t my_egid = PerlProc_getegid();
3897 PERL_ARGS_ASSERT_VALIDATE_SUID;
3899 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3901 int fd = PerlIO_fileno(rsfp);
3903 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3904 Perl_croak_nocontext( "Illegal suidscript");
3906 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3908 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3911 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3912 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3913 /* not set-id, must be wrapped */
3916 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3919 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3924 PERL_ARGS_ASSERT_FIND_BEGINNING;
3926 /* skip forward in input to the real script? */
3929 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3930 Perl_croak(aTHX_ "No Perl script found in input\n");
3932 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3933 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3934 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3936 while (*s == ' ' || *s == '\t') s++;
3938 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3939 || s2[-1] == '_') s2--;
3940 if (strnEQ(s2-4,"perl",4))
3941 while ((s = moreswitches(s)))
3950 /* no need to do anything here any more if we don't
3952 #ifndef NO_TAINT_SUPPORT
3953 const Uid_t my_uid = PerlProc_getuid();
3954 const Uid_t my_euid = PerlProc_geteuid();
3955 const Gid_t my_gid = PerlProc_getgid();
3956 const Gid_t my_egid = PerlProc_getegid();
3958 PERL_UNUSED_CONTEXT;
3960 /* Should not happen: */
3961 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3962 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3966 * Should go by suidscript, not uid!=euid: why disallow
3967 * system("ls") in scripts run from setuid things?
3968 * Or, is this run before we check arguments and set suidscript?
3969 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3970 * (We never have suidscript, can we be sure to have fdscript?)
3971 * Or must then go by UID checks? See comments in forbid_setid also.
3975 /* This is used very early in the lifetime of the program,
3976 * before even the options are parsed, so PL_tainting has
3977 * not been initialized properly. */
3979 Perl_doing_taint(int argc, char *argv[], char *envp[])
3981 #ifndef PERL_IMPLICIT_SYS
3982 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3983 * before we have an interpreter-- and the whole point of this
3984 * function is to be called at such an early stage. If you are on
3985 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3986 * "tainted because running with altered effective ids', you'll
3987 * have to add your own checks somewhere in here. The two most
3988 * known samples of 'implicitness' are Win32 and NetWare, neither
3989 * of which has much of concept of 'uids'. */
3990 Uid_t uid = PerlProc_getuid();
3991 Uid_t euid = PerlProc_geteuid();
3992 Gid_t gid = PerlProc_getgid();
3993 Gid_t egid = PerlProc_getegid();
4000 if (uid && (euid != uid || egid != gid))
4002 #endif /* !PERL_IMPLICIT_SYS */
4003 /* This is a really primitive check; environment gets ignored only
4004 * if -T are the first chars together; otherwise one gets
4005 * "Too late" message. */
4006 if ( argc > 1 && argv[1][0] == '-'
4007 && isALPHA_FOLD_EQ(argv[1][1], 't'))
4012 /* Passing the flag as a single char rather than a string is a slight space
4013 optimisation. The only message that isn't /^-.$/ is
4014 "program input from stdin", which is substituted in place of '\0', which
4015 could never be a command line flag. */
4017 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
4019 char string[3] = "-x";
4020 const char *message = "program input from stdin";
4022 PERL_UNUSED_CONTEXT;
4028 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4029 if (PerlProc_getuid() != PerlProc_geteuid())
4030 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4031 if (PerlProc_getgid() != PerlProc_getegid())
4032 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4033 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4035 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4039 Perl_init_dbargs(pTHX)
4041 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4046 /* Someone has already created it.
4047 It might have entries, and if we just turn off AvREAL(), they will
4048 "leak" until global destruction. */
4050 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4051 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4053 AvREIFY_only(PL_dbargs);
4057 Perl_init_debugger(pTHX)
4059 HV * const ostash = PL_curstash;
4062 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4064 Perl_init_dbargs(aTHX);
4065 PL_DBgv = MUTABLE_GV(
4066 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4068 PL_DBline = MUTABLE_GV(
4069 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4071 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4072 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4074 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4075 if (!SvIOK(PL_DBsingle))
4076 sv_setiv(PL_DBsingle, 0);
4077 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4078 mg->mg_private = DBVARMG_SINGLE;
4079 SvSETMAGIC(PL_DBsingle);
4081 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4082 if (!SvIOK(PL_DBtrace))
4083 sv_setiv(PL_DBtrace, 0);
4084 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4085 mg->mg_private = DBVARMG_TRACE;
4086 SvSETMAGIC(PL_DBtrace);
4088 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4089 if (!SvIOK(PL_DBsignal))
4090 sv_setiv(PL_DBsignal, 0);
4091 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4092 mg->mg_private = DBVARMG_SIGNAL;
4093 SvSETMAGIC(PL_DBsignal);
4095 SvREFCNT_dec(PL_curstash);
4096 PL_curstash = ostash;
4099 #ifndef STRESS_REALLOC
4100 #define REASONABLE(size) (size)
4101 #define REASONABLE_but_at_least(size,min) (size)
4103 #define REASONABLE(size) (1) /* unreasonable */
4104 #define REASONABLE_but_at_least(size,min) (min)
4108 Perl_init_stacks(pTHX)
4112 /* start with 128-item stack and 8K cxstack */
4113 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4114 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4115 PL_curstackinfo->si_type = PERLSI_MAIN;
4116 PL_curstack = PL_curstackinfo->si_stack;
4117 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4119 PL_stack_base = AvARRAY(PL_curstack);
4120 PL_stack_sp = PL_stack_base;
4121 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4123 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4126 PL_tmps_max = REASONABLE(128);
4128 Newx(PL_markstack,REASONABLE(32),I32);
4129 PL_markstack_ptr = PL_markstack;
4130 PL_markstack_max = PL_markstack + REASONABLE(32);
4134 Newx(PL_scopestack,REASONABLE(32),I32);
4136 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4138 PL_scopestack_ix = 0;
4139 PL_scopestack_max = REASONABLE(32);
4141 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4142 Newx(PL_savestack, size, ANY);
4143 PL_savestack_ix = 0;
4144 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4145 PL_savestack_max = size - SS_MAXPUSH;
4153 while (PL_curstackinfo->si_next)
4154 PL_curstackinfo = PL_curstackinfo->si_next;
4155 while (PL_curstackinfo) {
4156 PERL_SI *p = PL_curstackinfo->si_prev;
4157 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4158 Safefree(PL_curstackinfo->si_cxstack);
4159 Safefree(PL_curstackinfo);
4160 PL_curstackinfo = p;
4162 Safefree(PL_tmps_stack);
4163 Safefree(PL_markstack);
4164 Safefree(PL_scopestack);
4166 Safefree(PL_scopestack_name);
4168 Safefree(PL_savestack);
4172 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4174 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4175 AV *const isa = GvAVn(gv);
4178 PERL_ARGS_ASSERT_POPULATE_ISA;
4180 if(AvFILLp(isa) != -1)
4183 /* NOTE: No support for tied ISA */
4185 va_start(args, len);
4187 const char *const parent = va_arg(args, const char*);
4192 parent_len = va_arg(args, size_t);
4194 /* Arguments are supplied with a trailing :: */
4195 assert(parent_len > 2);
4196 assert(parent[parent_len - 1] == ':');
4197 assert(parent[parent_len - 2] == ':');
4198 av_push(isa, newSVpvn(parent, parent_len - 2));
4199 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4206 S_init_predump_symbols(pTHX)
4211 sv_setpvs(get_sv("\"", GV_ADD), " ");
4212 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4215 /* Historically, PVIOs were blessed into IO::Handle, unless
4216 FileHandle was loaded, in which case they were blessed into
4217 that. Action at a distance.
4218 However, if we simply bless into IO::Handle, we break code
4219 that assumes that PVIOs will have (among others) a seek
4220 method. IO::File inherits from IO::Handle and IO::Seekable,
4221 and provides the needed methods. But if we simply bless into
4222 it, then we break code that assumed that by loading
4223 IO::Handle, *it* would work.
4224 So a compromise is to set up the correct @IO::File::ISA,
4225 so that code that does C<use IO::Handle>; will still work.
4228 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4229 STR_WITH_LEN("IO::Handle::"),
4230 STR_WITH_LEN("IO::Seekable::"),
4231 STR_WITH_LEN("Exporter::"),
4234 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4235 GvMULTI_on(PL_stdingv);
4236 io = GvIOp(PL_stdingv);
4237 IoTYPE(io) = IoTYPE_RDONLY;
4238 IoIFP(io) = PerlIO_stdin();
4239 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4241 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4243 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4246 IoTYPE(io) = IoTYPE_WRONLY;
4247 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4249 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4251 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4253 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4254 GvMULTI_on(PL_stderrgv);
4255 io = GvIOp(PL_stderrgv);
4256 IoTYPE(io) = IoTYPE_WRONLY;
4257 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4258 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4260 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4262 PL_statname = newSVpvs(""); /* last filename we did stat on */
4266 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4268 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4270 argc--,argv++; /* skip name of script */
4271 if (PL_doswitches) {
4272 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4276 if (argv[0][1] == '-' && !argv[0][2]) {
4280 if ((s = strchr(argv[0], '='))) {
4281 const char *const start_name = argv[0] + 1;
4282 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4283 TRUE, SVt_PV)), s + 1);
4286 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4289 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4290 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4291 GvMULTI_on(PL_argvgv);
4292 av_clear(GvAVn(PL_argvgv));
4293 for (; argc > 0; argc--,argv++) {
4294 SV * const sv = newSVpv(argv[0],0);
4295 av_push(GvAV(PL_argvgv),sv);
4296 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4297 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4300 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4301 (void)sv_utf8_decode(sv);
4305 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4306 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4307 "-i used with no filenames on the command line, "
4308 "reading from STDIN");
4312 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4319 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4321 PL_toptarget = newSV_type(SVt_PVIV);
4322 sv_setpvs(PL_toptarget, "");
4323 PL_bodytarget = newSV_type(SVt_PVIV);
4324 sv_setpvs(PL_bodytarget, "");
4325 PL_formtarget = PL_bodytarget;
4329 init_argv_symbols(argc,argv);
4331 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4332 sv_setpv(GvSV(tmpgv),PL_origfilename);
4334 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4336 bool env_is_not_environ;
4337 SvREFCNT_inc_simple_void_NN(PL_envgv);
4338 GvMULTI_on(PL_envgv);
4339 hv = GvHVn(PL_envgv);
4340 hv_magic(hv, NULL, PERL_MAGIC_env);
4342 #ifdef USE_ENVIRON_ARRAY
4343 /* Note that if the supplied env parameter is actually a copy
4344 of the global environ then it may now point to free'd memory
4345 if the environment has been modified since. To avoid this
4346 problem we treat env==NULL as meaning 'use the default'
4350 env_is_not_environ = env != environ;
4351 if (env_is_not_environ
4352 # ifdef USE_ITHREADS
4353 && PL_curinterp == aTHX
4365 for (; *env; env++) {
4368 if (!(s = strchr(old_var,'=')) || s == old_var)
4372 #if defined(MSDOS) && !defined(DJGPP)
4374 (void)strupr(old_var);
4377 if (hv_exists(hv, old_var, nlen)) {
4378 const char *name = savepvn(old_var, nlen);
4380 /* make sure we use the same value as getenv(), otherwise code that
4381 uses getenv() (like setlocale()) might see a different value to %ENV
4383 sv = newSVpv(PerlEnv_getenv(name), 0);
4385 /* keep a count of the dups of this name so we can de-dup environ later */
4386 if (hv_exists(dups, name, nlen))
4387 ++SvIVX(*hv_fetch(dups, name, nlen, 0));
4389 (void)hv_store(dups, name, nlen, newSViv(1), 0);
4394 sv = newSVpv(s+1, 0);
4396 (void)hv_store(hv, old_var, nlen, sv, 0);
4397 if (env_is_not_environ)
4401 /* environ has some duplicate definitions, remove them */
4404 while ((entry = hv_iternext_flags(dups, 0))) {
4406 const char *name = HePV(entry, nlen);
4407 IV count = SvIV(HeVAL(entry));
4409 SV **valp = hv_fetch(hv, name, nlen, 0);
4413 /* try to remove any duplicate names, depending on the
4414 * implementation used in my_setenv() the iteration might
4415 * not be necessary, but let's be safe.
4417 for (i = 0; i < count; ++i)
4420 /* and set it back to the value we set $ENV{name} to */
4421 my_setenv(name, SvPV_nolen(*valp));
4424 SvREFCNT_dec_NN(dups);
4426 #endif /* USE_ENVIRON_ARRAY */
4427 #endif /* !PERL_MICRO */
4431 /* touch @F array to prevent spurious warnings 20020415 MJD */
4433 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4438 S_init_perllib(pTHX)
4441 const char *perl5lib = NULL;
4444 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4448 if (!TAINTING_get) {
4450 perl5lib = PerlEnv_getenv("PERL5LIB");
4452 * It isn't possible to delete an environment variable with
4453 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4454 * case we treat PERL5LIB as undefined if it has a zero-length value.
4456 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4457 if (perl5lib && *perl5lib != '\0')
4461 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4463 s = PerlEnv_getenv("PERLLIB");
4465 incpush_use_sep(s, 0, 0);
4468 /* Treat PERL5?LIB as a possible search list logical name -- the
4469 * "natural" VMS idiom for a Unix path string. We allow each
4470 * element to be a set of |-separated directories for compatibility.
4474 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4476 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4477 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4479 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4480 incpush_use_sep(buf, 0, 0);
4485 #ifndef PERL_IS_MINIPERL
4486 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4487 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4489 /* Use the ~-expanded versions of APPLLIB (undocumented),
4490 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4493 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4494 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4498 /* sitearch is always relative to sitelib on Windows for
4499 * DLL-based path intuition to work correctly */
4500 # if !defined(WIN32)
4501 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4502 INCPUSH_CAN_RELOCATE);
4508 /* this picks up sitearch as well */
4509 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4511 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4513 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4517 #ifdef PERL_VENDORARCH_EXP
4518 /* vendorarch is always relative to vendorlib on Windows for
4519 * DLL-based path intuition to work correctly */
4520 # if !defined(WIN32)
4521 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4522 INCPUSH_CAN_RELOCATE);
4526 #ifdef PERL_VENDORLIB_EXP
4528 /* this picks up vendorarch as well */
4529 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4531 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4533 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4534 INCPUSH_CAN_RELOCATE);
4539 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4543 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4547 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4549 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4552 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4554 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4558 #ifdef PERL_OTHERLIBDIRS
4559 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4560 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4561 |INCPUSH_CAN_RELOCATE);
4564 if (!TAINTING_get) {
4567 * It isn't possible to delete an environment variable with
4568 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4569 * case we treat PERL5LIB as undefined if it has a zero-length value.
4571 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4572 if (perl5lib && *perl5lib != '\0')
4576 incpush_use_sep(perl5lib, 0,
4577 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4579 /* Treat PERL5?LIB as a possible search list logical name -- the
4580 * "natural" VMS idiom for a Unix path string. We allow each
4581 * element to be a set of |-separated directories for compatibility.
4585 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4587 incpush_use_sep(buf, 0,
4588 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4589 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4593 /* Use the ~-expanded versions of APPLLIB (undocumented),
4594 SITELIB and VENDORLIB for older versions
4597 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4598 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4601 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4602 /* Search for version-specific dirs below here */
4603 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4604 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4608 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4609 /* Search for version-specific dirs below here */
4610 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4611 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4614 #ifdef PERL_OTHERLIBDIRS
4615 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4616 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4617 |INCPUSH_CAN_RELOCATE);
4619 #endif /* !PERL_IS_MINIPERL */
4622 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4625 #if defined(DOSISH) || defined(__SYMBIAN32__)
4626 # define PERLLIB_SEP ';'
4629 # define PERLLIB_SEP '|'
4631 # define PERLLIB_SEP ':'
4634 #ifndef PERLLIB_MANGLE
4635 # define PERLLIB_MANGLE(s,n) (s)
4638 #ifndef PERL_IS_MINIPERL
4639 /* Push a directory onto @INC if it exists.
4640 Generate a new SV if we do this, to save needing to copy the SV we push
4643 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4647 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4649 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4650 S_ISDIR(tmpstatbuf.st_mode)) {
4652 dir = newSVsv(stem);
4654 /* Truncate dir back to stem. */
4655 SvCUR_set(dir, SvCUR(stem));
4662 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4664 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4667 PERL_ARGS_ASSERT_MAYBERELOCATE;
4670 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4671 defined to so something (in os2/os2.c), but the code has been
4672 this way, ignoring any possible changed of length, since
4673 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4675 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4681 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4683 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4684 sv_usepvn(libdir,unix,len);
4687 PerlIO_printf(Perl_error_log,
4688 "Failed to unixify @INC element \"%s\"\n",
4689 SvPV_nolen_const(libdir));
4693 /* Do the if() outside the #ifdef to avoid warnings about an unused
4696 #ifdef PERL_RELOCATABLE_INC
4698 * Relocatable include entries are marked with a leading .../
4701 * 0: Remove that leading ".../"
4702 * 1: Remove trailing executable name (anything after the last '/')
4703 * from the perl path to give a perl prefix
4705 * While the @INC element starts "../" and the prefix ends with a real
4706 * directory (ie not . or ..) chop that real directory off the prefix
4707 * and the leading "../" from the @INC element. ie a logical "../"
4709 * Finally concatenate the prefix and the remainder of the @INC element
4710 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4711 * generates /usr/local/lib/perl5
4713 const char *libpath = SvPVX(libdir);
4714 STRLEN libpath_len = SvCUR(libdir);
4715 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4717 SV * const caret_X = get_sv("\030", 0);
4718 /* Going to use the SV just as a scratch buffer holding a C
4724 /* $^X is *the* source of taint if tainting is on, hence
4725 SvPOK() won't be true. */
4727 assert(SvPOKp(caret_X));
4728 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4730 /* Firstly take off the leading .../
4731 If all else fail we'll do the paths relative to the current
4733 sv_chop(libdir, libpath + 4);
4734 /* Don't use SvPV as we're intentionally bypassing taining,
4735 mortal copies that the mg_get of tainting creates, and
4736 corruption that seems to come via the save stack.
4737 I guess that the save stack isn't correctly set up yet. */
4738 libpath = SvPVX(libdir);
4739 libpath_len = SvCUR(libdir);
4741 /* This would work more efficiently with memrchr, but as it's
4742 only a GNU extension we'd need to probe for it and
4743 implement our own. Not hard, but maybe not worth it? */
4745 prefix = SvPVX(prefix_sv);
4746 lastslash = strrchr(prefix, '/');
4748 /* First time in with the *lastslash = '\0' we just wipe off
4749 the trailing /perl from (say) /usr/foo/bin/perl
4753 while ((*lastslash = '\0'), /* Do that, come what may. */
4754 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4755 && (lastslash = strrchr(prefix, '/')))) {
4756 if (lastslash[1] == '\0'
4757 || (lastslash[1] == '.'
4758 && (lastslash[2] == '/' /* ends "/." */
4759 || (lastslash[2] == '/'
4760 && lastslash[3] == '/' /* or "/.." */
4762 /* Prefix ends "/" or "/." or "/..", any of which
4763 are fishy, so don't do any more logical cleanup.
4767 /* Remove leading "../" from path */
4770 /* Next iteration round the loop removes the last
4771 directory name from prefix by writing a '\0' in
4772 the while clause. */
4774 /* prefix has been terminated with a '\0' to the correct
4775 length. libpath points somewhere into the libdir SV.
4776 We need to join the 2 with '/' and drop the result into
4778 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4779 SvREFCNT_dec(libdir);
4780 /* And this is the new libdir. */
4783 (PerlProc_getuid() != PerlProc_geteuid() ||
4784 PerlProc_getgid() != PerlProc_getegid())) {
4785 /* Need to taint relocated paths if running set ID */
4786 SvTAINTED_on(libdir);
4789 SvREFCNT_dec(prefix_sv);
4797 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4799 #ifndef PERL_IS_MINIPERL
4800 const U8 using_sub_dirs
4801 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4802 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4803 const U8 add_versioned_sub_dirs
4804 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4805 const U8 add_archonly_sub_dirs
4806 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4807 #ifdef PERL_INC_VERSION_LIST
4808 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4811 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4812 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4813 AV *const inc = GvAVn(PL_incgv);
4815 PERL_ARGS_ASSERT_INCPUSH;
4818 /* Could remove this vestigial extra block, if we don't mind a lot of
4819 re-indenting diff noise. */
4821 SV *const libdir = mayberelocate(dir, len, flags);
4822 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4823 arranged to unshift #! line -I onto the front of @INC. However,
4824 -I can add version and architecture specific libraries, and they
4825 need to go first. The old code assumed that it was always
4826 pushing. Hence to make it work, need to push the architecture
4827 (etc) libraries onto a temporary array, then "unshift" that onto
4828 the front of @INC. */
4829 #ifndef PERL_IS_MINIPERL
4830 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4833 * BEFORE pushing libdir onto @INC we may first push version- and
4834 * archname-specific sub-directories.
4836 if (using_sub_dirs) {
4837 SV *subdir = newSVsv(libdir);
4838 #ifdef PERL_INC_VERSION_LIST
4839 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4840 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4841 const char * const *incver;
4844 if (add_versioned_sub_dirs) {
4845 /* .../version/archname if -d .../version/archname */
4846 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4847 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4849 /* .../version if -d .../version */
4850 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4851 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4854 #ifdef PERL_INC_VERSION_LIST
4856 for (incver = incverlist; *incver; incver++) {
4857 /* .../xxx if -d .../xxx */
4858 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4859 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4864 if (add_archonly_sub_dirs) {
4865 /* .../archname if -d .../archname */
4866 sv_catpvs(subdir, "/" ARCHNAME);
4867 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4871 assert (SvREFCNT(subdir) == 1);
4872 SvREFCNT_dec(subdir);
4874 #endif /* !PERL_IS_MINIPERL */
4875 /* finally add this lib directory at the end of @INC */
4877 #ifdef PERL_IS_MINIPERL
4878 const Size_t extra = 0;
4880 Size_t extra = av_tindex(av) + 1;
4882 av_unshift(inc, extra + push_basedir);
4884 av_store(inc, extra, libdir);
4885 #ifndef PERL_IS_MINIPERL
4887 /* av owns a reference, av_store() expects to be donated a
4888 reference, and av expects to be sane when it's cleared.
4889 If I wanted to be naughty and wrong, I could peek inside the
4890 implementation of av_clear(), realise that it uses
4891 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4892 and so directly steal from it (with a memcpy() to inc, and
4893 then memset() to NULL them out. But people copy code from the
4894 core expecting it to be best practise, so let's use the API.
4895 Although studious readers will note that I'm not checking any
4897 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4902 else if (push_basedir) {
4903 av_push(inc, libdir);
4906 if (!push_basedir) {
4907 assert (SvREFCNT(libdir) == 1);
4908 SvREFCNT_dec(libdir);
4914 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4918 /* This logic has been broken out from S_incpush(). It may be possible to
4921 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4923 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4924 * argument to incpush_use_sep. This allows creation of relocatable
4925 * Perl distributions that patch the binary at install time. Those
4926 * distributions will have to provide their own relocation tools; this
4927 * is not a feature otherwise supported by core Perl.
4929 #ifndef PERL_RELOCATABLE_INCPUSH
4936 /* Break at all separators */
4937 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4939 /* skip any consecutive separators */
4941 /* Uncomment the next line for PATH semantics */
4942 /* But you'll need to write tests */
4943 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4945 incpush(p, (STRLEN)(s - p), flags);
4950 incpush(p, (STRLEN)(end - p), flags);
4955 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4958 VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4964 PERL_ARGS_ASSERT_CALL_LIST;
4966 while (av_tindex(paramList) >= 0) {
4967 cv = MUTABLE_CV(av_shift(paramList));
4969 if (paramList == PL_beginav) {
4970 /* save PL_beginav for compiler */
4971 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4973 else if (paramList == PL_checkav) {
4974 /* save PL_checkav for compiler */
4975 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4977 else if (paramList == PL_unitcheckav) {
4978 /* save PL_unitcheckav for compiler */
4979 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4989 (void)SvPV_const(atsv, len);
4991 PL_curcop = &PL_compiling;
4992 CopLINE_set(PL_curcop, oldline);
4993 if (paramList == PL_beginav)
4994 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4996 Perl_sv_catpvf(aTHX_ atsv,
4997 "%s failed--call queue aborted",
4998 paramList == PL_checkav ? "CHECK"
4999 : paramList == PL_initav ? "INIT"
5000 : paramList == PL_unitcheckav ? "UNITCHECK"
5002 while (PL_scopestack_ix > oldscope)
5005 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
5012 /* my_exit() was called */
5013 while (PL_scopestack_ix > oldscope)
5016 SET_CURSTASH(PL_defstash);
5017 PL_curcop = &PL_compiling;
5018 CopLINE_set(PL_curcop, oldline);
5021 NOT_REACHED; /* NOTREACHED */
5024 PL_curcop = &PL_compiling;
5025 CopLINE_set(PL_curcop, oldline);
5028 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
5037 Perl_my_exit(pTHX_ U32 status)
5039 if (PL_exit_flags & PERL_EXIT_ABORT) {
5042 if (PL_exit_flags & PERL_EXIT_WARN) {
5043 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5044 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
5045 PL_exit_flags &= ~PERL_EXIT_ABORT;
5055 STATUS_EXIT_SET(status);
5062 Perl_my_failure_exit(pTHX)
5065 /* We have been called to fall on our sword. The desired exit code
5066 * should be already set in STATUS_UNIX, but could be shifted over
5067 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5070 * If an error code has not been set, then force the issue.
5072 if (MY_POSIX_EXIT) {
5074 /* According to the die_exit.t tests, if errno is non-zero */
5075 /* It should be used for the error status. */
5077 if (errno == EVMSERR) {
5078 STATUS_NATIVE = vaxc$errno;
5081 /* According to die_exit.t tests, if the child_exit code is */
5082 /* also zero, then we need to exit with a code of 255 */
5083 if ((errno != 0) && (errno < 256))
5084 STATUS_UNIX_EXIT_SET(errno);
5085 else if (STATUS_UNIX < 255) {
5086 STATUS_UNIX_EXIT_SET(255);
5091 /* The exit code could have been set by $? or vmsish which
5092 * means that it may not have fatal set. So convert
5093 * success/warning codes to fatal with out changing
5094 * the POSIX status code. The severity makes VMS native
5095 * status handling work, while UNIX mode programs use the
5096 * the POSIX exit codes.
5098 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5099 STATUS_NATIVE &= STS$M_COND_ID;
5100 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5104 /* Traditionally Perl on VMS always expects a Fatal Error. */
5105 if (vaxc$errno & 1) {
5107 /* So force success status to failure */
5108 if (STATUS_NATIVE & 1)
5113 STATUS_UNIX = EINTR; /* In case something cares */
5118 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5120 /* Encode the severity code */
5121 severity = STATUS_NATIVE & STS$M_SEVERITY;
5122 STATUS_UNIX = (severity ? severity : 1) << 8;
5124 /* Perl expects this to be a fatal error */
5125 if (severity != STS$K_SEVERE)
5134 STATUS_UNIX_SET(errno);
5136 exitstatus = STATUS_UNIX >> 8;
5137 if (exitstatus & 255)
5138 STATUS_UNIX_SET(exitstatus);
5140 STATUS_UNIX_SET(255);
5143 if (PL_exit_flags & PERL_EXIT_ABORT) {
5146 if (PL_exit_flags & PERL_EXIT_WARN) {
5147 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5148 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5149 PL_exit_flags &= ~PERL_EXIT_ABORT;
5155 S_my_exit_jump(pTHX)
5158 SvREFCNT_dec(PL_e_script);
5162 POPSTACK_TO(PL_mainstack);
5163 if (cxstack_ix >= 0) {
5165 cx_popblock(cxstack);
5173 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5175 const char * const p = SvPVX_const(PL_e_script);
5176 const char *nl = strchr(p, '\n');
5178 PERL_UNUSED_ARG(idx);
5179 PERL_UNUSED_ARG(maxlen);
5181 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5183 filter_del(read_e_script);
5186 sv_catpvn(buf_sv, p, nl-p);
5187 sv_chop(PL_e_script, nl);
5191 /* removes boilerplate code at the end of each boot_Module xsub */
5193 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5196 call_list(PL_scopestack_ix, PL_unitcheckav);
5201 * ex: set ts=8 sts=4 sw=4 et: