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 /* If we traced all Perl OP usage, report and clean up */
606 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
607 for (i = 0; i <= OP_max; ++i) {
608 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
609 PL_op_exec_cnt[i] = 0;
611 /* Utility slot for easily doing little tracing experiments in the runloop: */
612 if (PL_op_exec_cnt[OP_max+1] != 0)
613 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
614 PerlIO_printf(Perl_debug_log, "\n");
618 if (PL_threadhook(aTHX)) {
619 /* Threads hook has vetoed further cleanup */
620 PL_veto_cleanup = TRUE;
624 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
625 if (destruct_level != 0) {
626 /* Fork here to create a child. Our child's job is to preserve the
627 state of scalars prior to destruction, so that we can instruct it
628 to dump any scalars that we later find have leaked.
629 There's no subtlety in this code - it assumes POSIX, and it doesn't
633 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
634 perror("Debug leaking scalars socketpair failed");
640 perror("Debug leaking scalars fork failed");
644 /* We are the child */
645 const int sock = fd[1];
646 const int debug_fd = PerlIO_fileno(Perl_debug_log);
649 /* Our success message is an integer 0, and a char 0 */
650 static const char success[sizeof(int) + 1] = {0};
654 /* We need to close all other file descriptors otherwise we end up
655 with interesting hangs, where the parent closes its end of a
656 pipe, and sits waiting for (another) child to terminate. Only
657 that child never terminates, because it never gets EOF, because
658 we also have the far end of the pipe open. We even need to
659 close the debugging fd, because sometimes it happens to be one
660 end of a pipe, and a process is waiting on the other end for
661 EOF. Normally it would be closed at some point earlier in
662 destruction, but if we happen to cause the pipe to remain open,
663 EOF never occurs, and we get an infinite hang. Hence all the
664 games to pass in a file descriptor if it's actually needed. */
666 f = sysconf(_SC_OPEN_MAX);
668 where = "sysconf failed";
679 union control_un control;
682 struct cmsghdr *cmptr;
686 msg.msg_control = control.control;
687 msg.msg_controllen = sizeof(control.control);
688 /* We're a connected socket so we don't need a source */
692 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
694 vec[0].iov_base = (void*)⌖
695 vec[0].iov_len = sizeof(target);
697 got = recvmsg(sock, &msg, 0);
702 where = "recv failed";
705 if(got < sizeof(target)) {
706 where = "short recv";
710 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
714 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
715 where = "wrong cmsg_len";
718 if(cmptr->cmsg_level != SOL_SOCKET) {
719 where = "wrong cmsg_level";
722 if(cmptr->cmsg_type != SCM_RIGHTS) {
723 where = "wrong cmsg_type";
727 got_fd = *(int*)CMSG_DATA(cmptr);
728 /* For our last little bit of trickery, put the file descriptor
729 back into Perl_debug_log, as if we never actually closed it
731 if(got_fd != debug_fd) {
732 if (dup2(got_fd, debug_fd) == -1) {
739 PerlIO_flush(Perl_debug_log);
741 got = write(sock, &success, sizeof(success));
744 where = "write failed";
747 if(got < sizeof(success)) {
748 where = "short write";
755 int send_errno = errno;
756 unsigned char length = (unsigned char) strlen(where);
757 struct iovec failure[3] = {
758 {(void*)&send_errno, sizeof(send_errno)},
760 {(void*)where, length}
762 int got = writev(sock, failure, 3);
763 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
764 in the parent if we try to read from the socketpair after the
765 child has exited, even if there was data to read.
766 So sleep a bit to give the parent a fighting chance of
769 _exit((got == -1) ? errno : 0);
773 PL_dumper_fd = fd[0];
778 /* We must account for everything. */
780 /* Destroy the main CV and syntax tree */
781 /* Set PL_curcop now, because destroying ops can cause new SVs
782 to be generated in Perl_pad_swipe, and when running with
783 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
784 op from which the filename structure member is copied. */
785 PL_curcop = &PL_compiling;
787 /* ensure comppad/curpad to refer to main's pad */
788 if (CvPADLIST(PL_main_cv)) {
789 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
790 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
792 op_free(PL_main_root);
795 PL_main_start = NULL;
796 /* note that PL_main_cv isn't usually actually freed at this point,
797 * due to the CvOUTSIDE refs from subs compiled within it. It will
798 * get freed once all the subs are freed in sv_clean_all(), for
799 * destruct_level > 0 */
800 SvREFCNT_dec(PL_main_cv);
802 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
804 /* Tell PerlIO we are about to tear things apart in case
805 we have layers which are using resources that should
809 PerlIO_destruct(aTHX);
812 * Try to destruct global references. We do this first so that the
813 * destructors and destructees still exist. Some sv's might remain.
814 * Non-referenced objects are on their own.
818 /* unhook hooks which will soon be, or use, destroyed data */
819 SvREFCNT_dec(PL_warnhook);
821 SvREFCNT_dec(PL_diehook);
824 /* call exit list functions */
825 while (PL_exitlistlen-- > 0)
826 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
828 Safefree(PL_exitlist);
833 SvREFCNT_dec(PL_registered_mros);
835 /* jettison our possibly duplicated environment */
836 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
837 * so we certainly shouldn't free it here
840 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
841 if (environ != PL_origenviron && !PL_use_safe_putenv
843 /* only main thread can free environ[0] contents */
844 && PL_curinterp == aTHX
850 for (i = 0; environ[i]; i++)
851 safesysfree(environ[i]);
853 /* Must use safesysfree() when working with environ. */
854 safesysfree(environ);
856 environ = PL_origenviron;
859 #endif /* !PERL_MICRO */
861 if (destruct_level == 0) {
863 DEBUG_P(debprofdump());
865 #if defined(PERLIO_LAYERS)
866 /* No more IO - including error messages ! */
867 PerlIO_cleanup(aTHX);
870 CopFILE_free(&PL_compiling);
872 /* The exit() function will do everything that needs doing. */
876 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
879 /* the syntax tree is shared between clones
880 * so op_free(PL_main_root) only ReREFCNT_dec's
881 * REGEXPs in the parent interpreter
882 * we need to manually ReREFCNT_dec for the clones
885 I32 i = AvFILLp(PL_regex_padav);
886 SV **ary = AvARRAY(PL_regex_padav);
889 SvREFCNT_dec(ary[i]);
890 ary[i] = &PL_sv_undef;
896 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
897 PL_stashcache = NULL;
899 /* loosen bonds of global variables */
901 /* XXX can PL_parser still be non-null here? */
902 if(PL_parser && PL_parser->rsfp) {
903 (void)PerlIO_close(PL_parser->rsfp);
904 PL_parser->rsfp = NULL;
908 Safefree(PL_splitstr);
918 PL_doswitches = FALSE;
919 PL_dowarn = G_WARN_OFF;
920 #ifdef PERL_SAWAMPERSAND
921 PL_sawampersand = 0; /* must save all match strings */
925 Safefree(PL_inplace);
927 SvREFCNT_dec(PL_patchlevel);
930 SvREFCNT_dec(PL_e_script);
936 /* magical thingies */
938 SvREFCNT_dec(PL_ofsgv); /* *, */
941 SvREFCNT_dec(PL_ors_sv); /* $\ */
944 SvREFCNT_dec(PL_rs); /* $/ */
947 Safefree(PL_osname); /* $^O */
950 SvREFCNT_dec(PL_statname);
954 /* defgv, aka *_ should be taken care of elsewhere */
957 Safefree(PL_efloatbuf);
961 /* startup and shutdown function lists */
962 SvREFCNT_dec(PL_beginav);
963 SvREFCNT_dec(PL_beginav_save);
964 SvREFCNT_dec(PL_endav);
965 SvREFCNT_dec(PL_checkav);
966 SvREFCNT_dec(PL_checkav_save);
967 SvREFCNT_dec(PL_unitcheckav);
968 SvREFCNT_dec(PL_unitcheckav_save);
969 SvREFCNT_dec(PL_initav);
971 PL_beginav_save = NULL;
974 PL_checkav_save = NULL;
975 PL_unitcheckav = NULL;
976 PL_unitcheckav_save = NULL;
979 /* shortcuts just get cleared */
985 PL_last_in_gv = NULL;
996 SvREFCNT_dec(PL_envgv);
997 SvREFCNT_dec(PL_incgv);
998 SvREFCNT_dec(PL_argvgv);
999 SvREFCNT_dec(PL_replgv);
1000 SvREFCNT_dec(PL_DBgv);
1001 SvREFCNT_dec(PL_DBline);
1002 SvREFCNT_dec(PL_DBsub);
1011 SvREFCNT_dec(PL_argvout_stack);
1012 PL_argvout_stack = NULL;
1014 SvREFCNT_dec(PL_modglobal);
1015 PL_modglobal = NULL;
1016 SvREFCNT_dec(PL_preambleav);
1017 PL_preambleav = NULL;
1018 SvREFCNT_dec(PL_subname);
1020 #ifdef PERL_USES_PL_PIDSTATUS
1021 SvREFCNT_dec(PL_pidstatus);
1022 PL_pidstatus = NULL;
1024 SvREFCNT_dec(PL_toptarget);
1025 PL_toptarget = NULL;
1026 SvREFCNT_dec(PL_bodytarget);
1027 PL_bodytarget = NULL;
1028 PL_formtarget = NULL;
1030 /* free locale stuff */
1031 #ifdef USE_LOCALE_COLLATE
1032 Safefree(PL_collation_name);
1033 PL_collation_name = NULL;
1036 #ifdef USE_LOCALE_NUMERIC
1037 Safefree(PL_numeric_name);
1038 PL_numeric_name = NULL;
1039 SvREFCNT_dec(PL_numeric_radix_sv);
1040 PL_numeric_radix_sv = NULL;
1043 /* clear character classes */
1044 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1045 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1046 PL_utf8_swash_ptrs[i] = NULL;
1048 SvREFCNT_dec(PL_utf8_mark);
1049 SvREFCNT_dec(PL_utf8_toupper);
1050 SvREFCNT_dec(PL_utf8_totitle);
1051 SvREFCNT_dec(PL_utf8_tolower);
1052 SvREFCNT_dec(PL_utf8_tofold);
1053 SvREFCNT_dec(PL_utf8_idstart);
1054 SvREFCNT_dec(PL_utf8_idcont);
1055 SvREFCNT_dec(PL_utf8_foldable);
1056 SvREFCNT_dec(PL_utf8_foldclosures);
1057 SvREFCNT_dec(PL_AboveLatin1);
1058 SvREFCNT_dec(PL_InBitmap);
1059 SvREFCNT_dec(PL_UpperLatin1);
1060 SvREFCNT_dec(PL_Latin1);
1061 SvREFCNT_dec(PL_NonL1NonFinalFold);
1062 SvREFCNT_dec(PL_HasMultiCharFold);
1063 #ifdef USE_LOCALE_CTYPE
1064 SvREFCNT_dec(PL_warn_locale);
1066 PL_utf8_mark = NULL;
1067 PL_utf8_toupper = NULL;
1068 PL_utf8_totitle = NULL;
1069 PL_utf8_tolower = NULL;
1070 PL_utf8_tofold = NULL;
1071 PL_utf8_idstart = NULL;
1072 PL_utf8_idcont = NULL;
1073 PL_utf8_foldclosures = NULL;
1074 PL_AboveLatin1 = NULL;
1076 PL_HasMultiCharFold = NULL;
1077 #ifdef USE_LOCALE_CTYPE
1078 PL_warn_locale = NULL;
1081 PL_NonL1NonFinalFold = NULL;
1082 PL_UpperLatin1 = NULL;
1083 for (i = 0; i < POSIX_CC_COUNT; i++) {
1084 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1085 PL_XPosix_ptrs[i] = NULL;
1087 PL_GCB_invlist = NULL;
1088 PL_LB_invlist = NULL;
1089 PL_SB_invlist = NULL;
1090 PL_WB_invlist = NULL;
1092 if (!specialWARN(PL_compiling.cop_warnings))
1093 PerlMemShared_free(PL_compiling.cop_warnings);
1094 PL_compiling.cop_warnings = NULL;
1095 cophh_free(CopHINTHASH_get(&PL_compiling));
1096 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1097 CopFILE_free(&PL_compiling);
1099 /* Prepare to destruct main symbol table. */
1102 /* break ref loop *:: <=> %:: */
1103 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1106 SvREFCNT_dec(PL_curstname);
1107 PL_curstname = NULL;
1109 /* clear queued errors */
1110 SvREFCNT_dec(PL_errors);
1113 SvREFCNT_dec(PL_isarev);
1116 if (destruct_level >= 2) {
1117 if (PL_scopestack_ix != 0)
1118 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1119 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1120 (long)PL_scopestack_ix);
1121 if (PL_savestack_ix != 0)
1122 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1123 "Unbalanced saves: %ld more saves than restores\n",
1124 (long)PL_savestack_ix);
1125 if (PL_tmps_floor != -1)
1126 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1127 (long)PL_tmps_floor + 1);
1128 if (cxstack_ix != -1)
1129 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1130 (long)cxstack_ix + 1);
1134 SvREFCNT_dec(PL_regex_padav);
1135 PL_regex_padav = NULL;
1136 PL_regex_pad = NULL;
1139 #ifdef PERL_IMPLICIT_CONTEXT
1140 /* the entries in this list are allocated via SV PVX's, so get freed
1141 * in sv_clean_all */
1142 Safefree(PL_my_cxt_list);
1145 /* Now absolutely destruct everything, somehow or other, loops or no. */
1147 /* the 2 is for PL_fdpid and PL_strtab */
1148 while (sv_clean_all() > 2)
1152 Safefree(PL_stashpad); /* must come after sv_clean_all */
1155 AvREAL_off(PL_fdpid); /* no surviving entries */
1156 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1159 #ifdef HAVE_INTERP_INTERN
1163 /* constant strings */
1164 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1165 SvREFCNT_dec(PL_sv_consts[i]);
1166 PL_sv_consts[i] = NULL;
1169 /* Destruct the global string table. */
1171 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1172 * so that sv_free() won't fail on them.
1173 * Now that the global string table is using a single hunk of memory
1174 * for both HE and HEK, we either need to explicitly unshare it the
1175 * correct way, or actually free things here.
1178 const I32 max = HvMAX(PL_strtab);
1179 HE * const * const array = HvARRAY(PL_strtab);
1180 HE *hent = array[0];
1183 if (hent && ckWARN_d(WARN_INTERNAL)) {
1184 HE * const next = HeNEXT(hent);
1185 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1186 "Unbalanced string table refcount: (%ld) for \"%s\"",
1187 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1194 hent = array[riter];
1199 HvARRAY(PL_strtab) = 0;
1200 HvTOTALKEYS(PL_strtab) = 0;
1202 SvREFCNT_dec(PL_strtab);
1205 /* free the pointer tables used for cloning */
1206 ptr_table_free(PL_ptr_table);
1207 PL_ptr_table = (PTR_TBL_t*)NULL;
1210 /* free special SVs */
1212 SvREFCNT(&PL_sv_yes) = 0;
1213 sv_clear(&PL_sv_yes);
1214 SvANY(&PL_sv_yes) = NULL;
1215 SvFLAGS(&PL_sv_yes) = 0;
1217 SvREFCNT(&PL_sv_no) = 0;
1218 sv_clear(&PL_sv_no);
1219 SvANY(&PL_sv_no) = NULL;
1220 SvFLAGS(&PL_sv_no) = 0;
1224 for (i=0; i<=2; i++) {
1225 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1226 sv_clear(PERL_DEBUG_PAD(i));
1227 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1228 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1232 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1233 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1235 #ifdef DEBUG_LEAKING_SCALARS
1236 if (PL_sv_count != 0) {
1241 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1242 svend = &sva[SvREFCNT(sva)];
1243 for (sv = sva + 1; sv < svend; ++sv) {
1244 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1245 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1247 " refcnt=%"UVuf pTHX__FORMAT "\n"
1248 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1250 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1252 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1254 sv->sv_debug_inpad ? "for" : "by",
1255 sv->sv_debug_optype ?
1256 PL_op_name[sv->sv_debug_optype]: "(none)",
1257 PTR2UV(sv->sv_debug_parent),
1260 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1261 Perl_dump_sv_child(aTHX_ sv);
1267 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1271 /* Wait for up to 4 seconds for child to terminate.
1272 This seems to be the least effort way of timing out on reaping
1274 struct timeval waitfor = {4, 0};
1275 int sock = PL_dumper_fd;
1279 FD_SET(sock, &rset);
1280 select(sock + 1, &rset, NULL, NULL, &waitfor);
1281 waitpid(child, &status, WNOHANG);
1286 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1292 #if defined(PERLIO_LAYERS)
1293 /* No more IO - including error messages ! */
1294 PerlIO_cleanup(aTHX);
1297 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1298 as currently layers use it rather than NULL as a marker
1299 for no arg - and will try and SvREFCNT_dec it.
1301 SvREFCNT(&PL_sv_undef) = 0;
1302 SvREADONLY_off(&PL_sv_undef);
1304 Safefree(PL_origfilename);
1305 PL_origfilename = NULL;
1306 Safefree(PL_reg_curpm);
1307 free_tied_hv_pool();
1308 Safefree(PL_op_mask);
1309 Safefree(PL_psig_name);
1310 PL_psig_name = (SV**)NULL;
1311 PL_psig_ptr = (SV**)NULL;
1313 /* We need to NULL PL_psig_pend first, so that
1314 signal handlers know not to use it */
1315 int *psig_save = PL_psig_pend;
1316 PL_psig_pend = (int*)NULL;
1317 Safefree(psig_save);
1320 TAINTING_set(FALSE);
1321 TAINT_WARN_set(FALSE);
1322 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1324 DEBUG_P(debprofdump());
1328 #ifdef USE_REENTRANT_API
1329 Perl_reentrant_free(aTHX);
1332 /* These all point to HVs that are about to be blown away.
1333 Code in core and on CPAN assumes that if the interpreter is re-started
1334 that they will be cleanly NULL or pointing to a valid HV. */
1335 PL_custom_op_names = NULL;
1336 PL_custom_op_descs = NULL;
1337 PL_custom_ops = NULL;
1341 while (PL_regmatch_slab) {
1342 regmatch_slab *s = PL_regmatch_slab;
1343 PL_regmatch_slab = PL_regmatch_slab->next;
1347 /* As the absolutely last thing, free the non-arena SV for mess() */
1350 /* we know that type == SVt_PVMG */
1352 /* it could have accumulated taint magic */
1355 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1356 moremagic = mg->mg_moremagic;
1357 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1359 Safefree(mg->mg_ptr);
1363 /* we know that type >= SVt_PV */
1364 SvPV_free(PL_mess_sv);
1365 Safefree(SvANY(PL_mess_sv));
1366 Safefree(PL_mess_sv);
1373 =for apidoc perl_free
1375 Releases a Perl interpreter. See L<perlembed>.
1385 PERL_ARGS_ASSERT_PERL_FREE;
1387 if (PL_veto_cleanup)
1390 #ifdef PERL_TRACK_MEMPOOL
1393 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1394 * value as we're probably hunting memory leaks then
1396 if (PL_perl_destruct_level == 0) {
1397 const U32 old_debug = PL_debug;
1398 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1399 thread at thread exit. */
1401 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1402 "free this thread's memory\n");
1403 PL_debug &= ~ DEBUG_m_FLAG;
1405 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1406 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1407 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1410 PL_debug = old_debug;
1415 #if defined(WIN32) || defined(NETWARE)
1416 # if defined(PERL_IMPLICIT_SYS)
1419 void *host = nw_internal_host;
1420 PerlMem_free(aTHXx);
1421 nw_delete_internal_host(host);
1423 void *host = w32_internal_host;
1424 PerlMem_free(aTHXx);
1425 win32_delete_internal_host(host);
1429 PerlMem_free(aTHXx);
1432 PerlMem_free(aTHXx);
1436 #if defined(USE_ITHREADS)
1437 /* provide destructors to clean up the thread key when libperl is unloaded */
1438 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1440 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1441 #pragma fini "perl_fini"
1442 #elif defined(__sun) && !defined(__GNUC__)
1443 #pragma fini (perl_fini)
1447 #if defined(__GNUC__)
1448 __attribute__((destructor))
1454 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1457 PL_curinterp && !PL_veto_cleanup)
1462 #endif /* THREADS */
1465 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1467 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1468 PL_exitlist[PL_exitlistlen].fn = fn;
1469 PL_exitlist[PL_exitlistlen].ptr = ptr;
1474 =for apidoc perl_parse
1476 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1481 #define SET_CURSTASH(newstash) \
1482 if (PL_curstash != newstash) { \
1483 SvREFCNT_dec(PL_curstash); \
1484 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1488 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1495 PERL_ARGS_ASSERT_PERL_PARSE;
1496 #ifndef MULTIPLICITY
1497 PERL_UNUSED_ARG(my_perl);
1499 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1501 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1503 if (s && strEQ(s, "1")) {
1504 const unsigned char *seed= PERL_HASH_SEED;
1505 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1506 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1507 while (seed < seed_end) {
1508 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1510 #ifdef PERL_HASH_RANDOMIZE_KEYS
1511 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1512 PL_HASH_RAND_BITS_ENABLED,
1513 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1515 PerlIO_printf(Perl_debug_log, "\n");
1518 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1522 struct NameTranslationInfo nti;
1523 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1530 if (PL_origalen != 0) {
1531 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1534 /* Set PL_origalen be the sum of the contiguous argv[]
1535 * elements plus the size of the env in case that it is
1536 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1537 * as the maximum modifiable length of $0. In the worst case
1538 * the area we are able to modify is limited to the size of
1539 * the original argv[0]. (See below for 'contiguous', though.)
1541 const char *s = NULL;
1543 const UV mask = ~(UV)(PTRSIZE-1);
1544 /* Do the mask check only if the args seem like aligned. */
1546 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1548 /* See if all the arguments are contiguous in memory. Note
1549 * that 'contiguous' is a loose term because some platforms
1550 * align the argv[] and the envp[]. If the arguments look
1551 * like non-aligned, assume that they are 'strictly' or
1552 * 'traditionally' contiguous. If the arguments look like
1553 * aligned, we just check that they are within aligned
1554 * PTRSIZE bytes. As long as no system has something bizarre
1555 * like the argv[] interleaved with some other data, we are
1556 * fine. (Did I just evoke Murphy's Law?) --jhi */
1557 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1559 for (i = 1; i < PL_origargc; i++) {
1560 if ((PL_origargv[i] == s + 1
1562 || PL_origargv[i] == s + 2
1567 (PL_origargv[i] > s &&
1569 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 #ifndef PERL_USE_SAFE_PUTENV
1581 /* Can we grab env area too to be used as the area for $0? */
1582 if (s && PL_origenviron && !PL_use_safe_putenv) {
1583 if ((PL_origenviron[0] == s + 1)
1586 (PL_origenviron[0] > s &&
1587 PL_origenviron[0] <=
1588 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1591 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1592 s = PL_origenviron[0];
1595 my_setenv("NoNe SuCh", NULL);
1596 /* Force copy of environment. */
1597 for (i = 1; PL_origenviron[i]; i++) {
1598 if (PL_origenviron[i] == s + 1
1601 (PL_origenviron[i] > s &&
1602 PL_origenviron[i] <=
1603 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1606 s = PL_origenviron[i];
1614 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1616 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1621 /* Come here if running an undumped a.out. */
1623 PL_origfilename = savepv(argv[0]);
1624 PL_do_undump = FALSE;
1625 cxstack_ix = -1; /* start label stack again */
1627 assert (!TAINT_get);
1631 init_postdump_symbols(argc,argv,env);
1636 op_free(PL_main_root);
1637 PL_main_root = NULL;
1639 PL_main_start = NULL;
1640 SvREFCNT_dec(PL_main_cv);
1644 oldscope = PL_scopestack_ix;
1645 PL_dowarn = G_WARN_OFF;
1650 parse_body(env,xsinit);
1651 if (PL_unitcheckav) {
1652 call_list(oldscope, PL_unitcheckav);
1655 PERL_SET_PHASE(PERL_PHASE_CHECK);
1656 call_list(oldscope, PL_checkav);
1664 /* my_exit() was called */
1665 while (PL_scopestack_ix > oldscope)
1668 SET_CURSTASH(PL_defstash);
1669 if (PL_unitcheckav) {
1670 call_list(oldscope, PL_unitcheckav);
1673 PERL_SET_PHASE(PERL_PHASE_CHECK);
1674 call_list(oldscope, PL_checkav);
1679 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1687 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1688 miniperl, and we need to see those flags reflected in the values here. */
1690 /* What this returns is subject to change. Use the public interface in Config.
1693 S_Internals_V(pTHX_ CV *cv)
1696 #ifdef LOCAL_PATCH_COUNT
1697 const int local_patch_count = LOCAL_PATCH_COUNT;
1699 const int local_patch_count = 0;
1701 const int entries = 3 + local_patch_count;
1703 static const char non_bincompat_options[] =
1710 # ifdef NO_HASH_SEED
1713 # ifdef NO_TAINT_SUPPORT
1716 # ifdef PERL_BOOL_AS_CHAR
1717 " PERL_BOOL_AS_CHAR"
1719 # ifdef PERL_COPY_ON_WRITE
1720 " PERL_COPY_ON_WRITE"
1722 # ifdef PERL_DISABLE_PMC
1725 # ifdef PERL_DONT_CREATE_GVSV
1726 " PERL_DONT_CREATE_GVSV"
1728 # ifdef PERL_EXTERNAL_GLOB
1729 " PERL_EXTERNAL_GLOB"
1731 # ifdef PERL_HASH_FUNC_SIPHASH
1732 " PERL_HASH_FUNC_SIPHASH"
1734 # ifdef PERL_HASH_FUNC_SDBM
1735 " PERL_HASH_FUNC_SDBM"
1737 # ifdef PERL_HASH_FUNC_DJB2
1738 " PERL_HASH_FUNC_DJB2"
1740 # ifdef PERL_HASH_FUNC_SUPERFAST
1741 " PERL_HASH_FUNC_SUPERFAST"
1743 # ifdef PERL_HASH_FUNC_MURMUR3
1744 " PERL_HASH_FUNC_MURMUR3"
1746 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1747 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1749 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1750 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1752 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1753 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1755 # ifdef PERL_IS_MINIPERL
1758 # ifdef PERL_MALLOC_WRAP
1761 # ifdef PERL_MEM_LOG
1764 # ifdef PERL_MEM_LOG_NOIMPL
1765 " PERL_MEM_LOG_NOIMPL"
1767 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1768 " PERL_PERTURB_KEYS_DETERMINISTIC"
1770 # ifdef PERL_PERTURB_KEYS_DISABLED
1771 " PERL_PERTURB_KEYS_DISABLED"
1773 # ifdef PERL_PERTURB_KEYS_RANDOM
1774 " PERL_PERTURB_KEYS_RANDOM"
1776 # ifdef PERL_PRESERVE_IVUV
1777 " PERL_PRESERVE_IVUV"
1779 # ifdef PERL_RELOCATABLE_INCPUSH
1780 " PERL_RELOCATABLE_INCPUSH"
1782 # ifdef PERL_USE_DEVEL
1785 # ifdef PERL_USE_SAFE_PUTENV
1786 " PERL_USE_SAFE_PUTENV"
1788 # ifdef SILENT_NO_TAINT_SUPPORT
1789 " SILENT_NO_TAINT_SUPPORT"
1791 # ifdef UNLINK_ALL_VERSIONS
1792 " UNLINK_ALL_VERSIONS"
1794 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1795 " USE_ATTRIBUTES_FOR_PERLIO"
1797 # ifdef USE_FAST_STDIO
1800 # ifdef USE_HASH_SEED_EXPLICIT
1801 " USE_HASH_SEED_EXPLICIT"
1806 # ifdef USE_LOCALE_CTYPE
1809 # ifdef WIN32_NO_REGISTRY
1812 # ifdef USE_PERL_ATOF
1815 # ifdef USE_SITECUSTOMIZE
1816 " USE_SITECUSTOMIZE"
1819 PERL_UNUSED_ARG(cv);
1820 PERL_UNUSED_VAR(items);
1822 EXTEND(SP, entries);
1824 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1825 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1826 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1828 #ifndef PERL_BUILD_DATE
1831 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1833 # define PERL_BUILD_DATE __DATE__
1838 #ifdef PERL_BUILD_DATE
1839 PUSHs(Perl_newSVpvn_flags(aTHX_
1840 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1843 PUSHs(&PL_sv_undef);
1846 for (i = 1; i <= local_patch_count; i++) {
1847 /* This will be an undef, if PL_localpatches[i] is NULL. */
1848 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1854 #define INCPUSH_UNSHIFT 0x01
1855 #define INCPUSH_ADD_OLD_VERS 0x02
1856 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1857 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1858 #define INCPUSH_NOT_BASEDIR 0x10
1859 #define INCPUSH_CAN_RELOCATE 0x20
1860 #define INCPUSH_ADD_SUB_DIRS \
1861 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1864 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1868 int argc = PL_origargc;
1869 char **argv = PL_origargv;
1870 const char *scriptname = NULL;
1871 bool dosearch = FALSE;
1873 bool doextract = FALSE;
1874 const char *cddir = NULL;
1875 #ifdef USE_SITECUSTOMIZE
1876 bool minus_f = FALSE;
1878 SV *linestr_sv = NULL;
1879 bool add_read_e_script = FALSE;
1880 U32 lex_start_flags = 0;
1882 PERL_SET_PHASE(PERL_PHASE_START);
1888 for (argc--,argv++; argc > 0; argc--,argv++) {
1889 if (argv[0][0] != '-' || !argv[0][1])
1895 #ifndef PERL_STRICT_CR
1919 if ((s = moreswitches(s)))
1924 #if defined(SILENT_NO_TAINT_SUPPORT)
1925 /* silently ignore */
1926 #elif defined(NO_TAINT_SUPPORT)
1927 Perl_croak_nocontext("This perl was compiled without taint support. "
1928 "Cowardly refusing to run with -t or -T flags");
1930 CHECK_MALLOC_TOO_LATE_FOR('t');
1931 if( !TAINTING_get ) {
1932 TAINT_WARN_set(TRUE);
1939 #if defined(SILENT_NO_TAINT_SUPPORT)
1940 /* silently ignore */
1941 #elif defined(NO_TAINT_SUPPORT)
1942 Perl_croak_nocontext("This perl was compiled without taint support. "
1943 "Cowardly refusing to run with -t or -T flags");
1945 CHECK_MALLOC_TOO_LATE_FOR('T');
1947 TAINT_WARN_set(FALSE);
1956 forbid_setid('e', FALSE);
1958 PL_e_script = newSVpvs("");
1959 add_read_e_script = TRUE;
1962 sv_catpv(PL_e_script, s);
1964 sv_catpv(PL_e_script, argv[1]);
1968 Perl_croak(aTHX_ "No code specified for -%c", c);
1969 sv_catpvs(PL_e_script, "\n");
1973 #ifdef USE_SITECUSTOMIZE
1979 case 'I': /* -I handled both here and in moreswitches() */
1980 forbid_setid('I', FALSE);
1981 if (!*++s && (s=argv[1]) != NULL) {
1985 STRLEN len = strlen(s);
1986 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1989 Perl_croak(aTHX_ "No directory specified for -I");
1992 forbid_setid('S', FALSE);
2001 opts_prog = newSVpvs("use Config; Config::_V()");
2005 opts_prog = Perl_newSVpvf(aTHX_
2006 "use Config; Config::config_vars(qw%c%s%c)",
2010 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2011 /* don't look for script or read stdin */
2012 scriptname = BIT_BUCKET;
2024 if (!*++s || isSPACE(*s)) {
2028 /* catch use of gnu style long options.
2029 Both of these exit immediately. */
2030 if (strEQ(s, "version"))
2032 if (strEQ(s, "help"))
2037 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2048 #ifndef SECURE_INTERNAL_GETENV
2051 (s = PerlEnv_getenv("PERL5OPT")))
2053 /* s points to static memory in getenv(), which may be overwritten at
2054 * any time; use a mortal copy instead */
2055 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2059 if (*s == '-' && *(s+1) == 'T') {
2060 #if defined(SILENT_NO_TAINT_SUPPORT)
2061 /* silently ignore */
2062 #elif defined(NO_TAINT_SUPPORT)
2063 Perl_croak_nocontext("This perl was compiled without taint support. "
2064 "Cowardly refusing to run with -t or -T flags");
2066 CHECK_MALLOC_TOO_LATE_FOR('T');
2068 TAINT_WARN_set(FALSE);
2072 char *popt_copy = NULL;
2085 if (!strchr("CDIMUdmtwW", *s))
2086 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2090 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2091 s = popt_copy + (s - d);
2099 #if defined(SILENT_NO_TAINT_SUPPORT)
2100 /* silently ignore */
2101 #elif defined(NO_TAINT_SUPPORT)
2102 Perl_croak_nocontext("This perl was compiled without taint support. "
2103 "Cowardly refusing to run with -t or -T flags");
2105 if( !TAINTING_get) {
2106 TAINT_WARN_set(TRUE);
2118 /* Set $^X early so that it can be used for relocatable paths in @INC */
2119 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2120 assert (!TAINT_get);
2125 #if defined(USE_SITECUSTOMIZE)
2127 /* The games with local $! are to avoid setting errno if there is no
2128 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2129 ie a q() operator with a NUL byte as a the delimiter. This avoids
2130 problems with pathnames containing (say) ' */
2131 # ifdef PERL_IS_MINIPERL
2132 AV *const inc = GvAV(PL_incgv);
2133 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2136 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2137 it should be reported immediately as a build failure. */
2138 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2140 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2141 "do {local $!; -f $f }"
2142 " and do $f || die $@ || qq '$f: $!' }",
2143 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2146 /* SITELIB_EXP is a function call on Win32. */
2147 const char *const raw_sitelib = SITELIB_EXP;
2149 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2150 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2151 INCPUSH_CAN_RELOCATE);
2152 const char *const sitelib = SvPVX(sitelib_sv);
2153 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2155 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2156 0, SVfARG(sitelib), 0,
2157 0, SVfARG(sitelib), 0));
2158 assert (SvREFCNT(sitelib_sv) == 1);
2159 SvREFCNT_dec(sitelib_sv);
2166 scriptname = argv[0];
2169 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2171 else if (scriptname == NULL) {
2173 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2179 assert (!TAINT_get);
2183 bool suidscript = FALSE;
2185 rsfp = open_script(scriptname, dosearch, &suidscript);
2187 rsfp = PerlIO_stdin();
2188 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2191 validate_suid(rsfp);
2194 # if defined(SIGCHLD) || defined(SIGCLD)
2197 # define SIGCHLD SIGCLD
2199 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2200 if (sigstate == (Sighandler_t) SIG_IGN) {
2201 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2202 "Can't ignore signal CHLD, forcing to default");
2203 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2211 /* This will croak if suidscript is true, as -x cannot be used with
2213 forbid_setid('x', suidscript);
2214 /* Hence you can't get here if suidscript is true */
2216 linestr_sv = newSV_type(SVt_PV);
2217 lex_start_flags |= LEX_START_COPIED;
2218 find_beginning(linestr_sv, rsfp);
2219 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2220 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2224 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2225 CvUNIQUE_on(PL_compcv);
2227 CvPADLIST_set(PL_compcv, pad_new(0));
2229 PL_isarev = newHV();
2232 boot_core_UNIVERSAL();
2234 newXS("Internals::V", S_Internals_V, __FILE__);
2237 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2239 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2245 # ifdef HAS_SOCKS5_INIT
2246 socks5_init(argv[0]);
2252 init_predump_symbols();
2253 /* init_postdump_symbols not currently designed to be called */
2254 /* more than once (ENV isn't cleared first, for example) */
2255 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2257 init_postdump_symbols(argc,argv,env);
2259 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2260 * or explicitly in some platforms.
2261 * locale.c:Perl_init_i18nl10n() if the environment
2262 * look like the user wants to use UTF-8. */
2263 #if defined(__SYMBIAN32__)
2264 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2266 # ifndef PERL_IS_MINIPERL
2268 /* Requires init_predump_symbols(). */
2269 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2274 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2275 * and the default open disciplines. */
2276 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2277 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2279 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2280 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2281 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2283 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2284 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2285 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2287 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2288 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2289 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2291 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2292 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2295 sv_setpvs(sv, ":utf8\0:utf8");
2297 sv_setpvs(sv, ":utf8\0");
2300 sv_setpvs(sv, "\0:utf8");
2309 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2310 if (strEQ(s, "unsafe"))
2311 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2312 else if (strEQ(s, "safe"))
2313 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2315 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2320 lex_start(linestr_sv, rsfp, lex_start_flags);
2321 SvREFCNT_dec(linestr_sv);
2323 PL_subname = newSVpvs("main");
2325 if (add_read_e_script)
2326 filter_add(read_e_script, NULL);
2328 /* now parse the script */
2330 SETERRNO(0,SS_NORMAL);
2331 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2333 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2335 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2339 CopLINE_set(PL_curcop, 0);
2340 SET_CURSTASH(PL_defstash);
2342 SvREFCNT_dec(PL_e_script);
2350 SAVECOPFILE(PL_curcop);
2351 SAVECOPLINE(PL_curcop);
2352 gv_check(PL_defstash);
2362 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2363 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2364 dump_mstats("after compilation:");
2369 PL_restartjmpenv = NULL;
2375 =for apidoc perl_run
2377 Tells a Perl interpreter to run. See L<perlembed>.
2389 PERL_ARGS_ASSERT_PERL_RUN;
2390 #ifndef MULTIPLICITY
2391 PERL_UNUSED_ARG(my_perl);
2394 oldscope = PL_scopestack_ix;
2402 cxstack_ix = -1; /* start context stack again */
2404 case 0: /* normal completion */
2408 case 2: /* my_exit() */
2409 while (PL_scopestack_ix > oldscope)
2412 SET_CURSTASH(PL_defstash);
2413 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2414 PL_endav && !PL_minus_c) {
2415 PERL_SET_PHASE(PERL_PHASE_END);
2416 call_list(oldscope, PL_endav);
2419 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2420 dump_mstats("after execution: ");
2426 POPSTACK_TO(PL_mainstack);
2429 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2440 S_run_body(pTHX_ I32 oldscope)
2442 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2443 PL_sawampersand ? "Enabling" : "Omitting",
2444 (unsigned int)(PL_sawampersand)));
2446 if (!PL_restartop) {
2448 if (DEBUG_x_TEST || DEBUG_B_TEST)
2449 dump_all_perl(!DEBUG_B_TEST);
2451 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2455 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2458 if (PERLDB_SINGLE && PL_DBsingle)
2461 PERL_SET_PHASE(PERL_PHASE_INIT);
2462 call_list(oldscope, PL_initav);
2464 #ifdef PERL_DEBUG_READONLY_OPS
2465 if (PL_main_root && PL_main_root->op_slabbed)
2466 Slab_to_ro(OpSLAB(PL_main_root));
2472 PERL_SET_PHASE(PERL_PHASE_RUN);
2475 PL_restartjmpenv = NULL;
2476 PL_op = PL_restartop;
2480 else if (PL_main_start) {
2481 CvDEPTH(PL_main_cv) = 1;
2482 PL_op = PL_main_start;
2486 NOT_REACHED; /* NOTREACHED */
2490 =head1 SV Manipulation Functions
2492 =for apidoc p||get_sv
2494 Returns the SV of the specified Perl scalar. C<flags> are passed to
2495 C<gv_fetchpv>. If C<GV_ADD> is set and the
2496 Perl variable does not exist then it will be created. If C<flags> is zero
2497 and the variable does not exist then NULL is returned.
2503 Perl_get_sv(pTHX_ const char *name, I32 flags)
2507 PERL_ARGS_ASSERT_GET_SV;
2509 gv = gv_fetchpv(name, flags, SVt_PV);
2516 =head1 Array Manipulation Functions
2518 =for apidoc p||get_av
2520 Returns the AV of the specified Perl global or package array with the given
2521 name (so it won't work on lexical variables). C<flags> are passed
2522 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2523 Perl variable does not exist then it will be created. If C<flags> is zero
2524 and the variable does not exist then NULL is returned.
2526 Perl equivalent: C<@{"$name"}>.
2532 Perl_get_av(pTHX_ const char *name, I32 flags)
2534 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2536 PERL_ARGS_ASSERT_GET_AV;
2546 =head1 Hash Manipulation Functions
2548 =for apidoc p||get_hv
2550 Returns the HV of the specified Perl hash. C<flags> are passed to
2551 C<gv_fetchpv>. If C<GV_ADD> is set and the
2552 Perl variable does not exist then it will be created. If C<flags> is zero
2553 and the variable does not exist then C<NULL> is returned.
2559 Perl_get_hv(pTHX_ const char *name, I32 flags)
2561 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2563 PERL_ARGS_ASSERT_GET_HV;
2573 =head1 CV Manipulation Functions
2575 =for apidoc p||get_cvn_flags
2577 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2578 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2579 exist then it will be declared (which has the same effect as saying
2580 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2581 then NULL is returned.
2583 =for apidoc p||get_cv
2585 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2591 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2593 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2595 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2597 /* XXX this is probably not what they think they're getting.
2598 * It has the same effect as "sub name;", i.e. just a forward
2600 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2601 return newSTUB(gv,0);
2608 /* Nothing in core calls this now, but we can't replace it with a macro and
2609 move it to mathoms.c as a macro would evaluate name twice. */
2611 Perl_get_cv(pTHX_ const char *name, I32 flags)
2613 PERL_ARGS_ASSERT_GET_CV;
2615 return get_cvn_flags(name, strlen(name), flags);
2618 /* Be sure to refetch the stack pointer after calling these routines. */
2622 =head1 Callback Functions
2624 =for apidoc p||call_argv
2626 Performs a callback to the specified named and package-scoped Perl subroutine
2627 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2630 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2636 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2638 /* See G_* flags in cop.h */
2639 /* null terminated arg list */
2643 PERL_ARGS_ASSERT_CALL_ARGV;
2647 mXPUSHs(newSVpv(*argv,0));
2651 return call_pv(sub_name, flags);
2655 =for apidoc p||call_pv
2657 Performs a callback to the specified Perl sub. See L<perlcall>.
2663 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2664 /* name of the subroutine */
2665 /* See G_* flags in cop.h */
2667 PERL_ARGS_ASSERT_CALL_PV;
2669 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2673 =for apidoc p||call_method
2675 Performs a callback to the specified Perl method. The blessed object must
2676 be on the stack. See L<perlcall>.
2682 Perl_call_method(pTHX_ const char *methname, I32 flags)
2683 /* name of the subroutine */
2684 /* See G_* flags in cop.h */
2688 PERL_ARGS_ASSERT_CALL_METHOD;
2690 len = strlen(methname);
2691 sv = flags & G_METHOD_NAMED
2692 ? sv_2mortal(newSVpvn_share(methname, len,0))
2693 : newSVpvn_flags(methname, len, SVs_TEMP);
2695 return call_sv(sv, flags | G_METHOD);
2698 /* May be called with any of a CV, a GV, or an SV containing the name. */
2700 =for apidoc p||call_sv
2702 Performs a callback to the Perl sub specified by the SV.
2704 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2705 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2706 or C<SvPV(sv)> will be used as the name of the sub to call.
2708 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2709 C<SvPV(sv)> will be used as the name of the method to call.
2711 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2712 the name of the method to call.
2714 Some other values are treated specially for internal use and should
2723 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2724 /* See G_* flags in cop.h */
2727 LOGOP myop; /* fake syntax tree node */
2731 bool oldcatch = CATCH_GET;
2733 OP* const oldop = PL_op;
2736 PERL_ARGS_ASSERT_CALL_SV;
2738 if (flags & G_DISCARD) {
2742 if (!(flags & G_WANT)) {
2743 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2748 Zero(&myop, 1, LOGOP);
2749 if (!(flags & G_NOARGS))
2750 myop.op_flags |= OPf_STACKED;
2751 myop.op_flags |= OP_GIMME_REVERSE(flags);
2755 if (!(flags & G_METHOD_NAMED)) {
2763 if (PERLDB_SUB && PL_curstash != PL_debstash
2764 /* Handle first BEGIN of -d. */
2765 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2766 /* Try harder, since this may have been a sighandler, thus
2767 * curstash may be meaningless. */
2768 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2769 && !(flags & G_NODEBUG))
2770 myop.op_private |= OPpENTERSUB_DB;
2772 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2773 Zero(&method_op, 1, METHOP);
2774 method_op.op_next = (OP*)&myop;
2775 PL_op = (OP*)&method_op;
2776 if ( flags & G_METHOD_NAMED ) {
2777 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2778 method_op.op_type = OP_METHOD_NAMED;
2779 method_op.op_u.op_meth_sv = sv;
2781 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2782 method_op.op_type = OP_METHOD;
2784 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2785 myop.op_type = OP_ENTERSUB;
2788 if (!(flags & G_EVAL)) {
2790 CALL_BODY_SUB((OP*)&myop);
2791 retval = PL_stack_sp - (PL_stack_base + oldmark);
2792 CATCH_SET(oldcatch);
2796 myop.op_other = (OP*)&myop;
2798 old_cxix = cxstack_ix;
2799 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2807 CALL_BODY_SUB((OP*)&myop);
2808 retval = PL_stack_sp - (PL_stack_base + oldmark);
2809 if (!(flags & G_KEEPERR)) {
2817 /* my_exit() was called */
2818 SET_CURSTASH(PL_defstash);
2822 NOT_REACHED; /* NOTREACHED */
2825 PL_restartjmpenv = NULL;
2826 PL_op = PL_restartop;
2830 PL_stack_sp = PL_stack_base + oldmark;
2831 if ((flags & G_WANT) == G_ARRAY)
2835 *++PL_stack_sp = &PL_sv_undef;
2840 /* if we croaked, depending on how we croaked the eval scope
2841 * may or may not have already been popped */
2842 if (cxstack_ix > old_cxix) {
2843 assert(cxstack_ix == old_cxix + 1);
2844 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2845 delete_eval_scope();
2850 if (flags & G_DISCARD) {
2851 PL_stack_sp = PL_stack_base + oldmark;
2860 /* Eval a string. The G_EVAL flag is always assumed. */
2863 =for apidoc p||eval_sv
2865 Tells Perl to C<eval> the string in the SV. It supports the same flags
2866 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2872 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2874 /* See G_* flags in cop.h */
2877 UNOP myop; /* fake syntax tree node */
2881 OP* const oldop = PL_op;
2884 PERL_ARGS_ASSERT_EVAL_SV;
2886 if (flags & G_DISCARD) {
2893 Zero(&myop, 1, UNOP);
2896 oldmark = SP - PL_stack_base;
2902 if (!(flags & G_NOARGS))
2903 myop.op_flags = OPf_STACKED;
2904 myop.op_type = OP_ENTEREVAL;
2905 myop.op_flags |= OP_GIMME_REVERSE(flags);
2906 if (flags & G_KEEPERR)
2907 myop.op_flags |= OPf_SPECIAL;
2909 if (flags & G_RE_REPARSING)
2910 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2912 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2913 * before a cx_pusheval(), which corrupts the stack after a croak */
2914 TAINT_PROPER("eval_sv()");
2920 if (PL_op == (OP*)(&myop)) {
2921 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2923 goto fail; /* failed in compilation */
2926 retval = PL_stack_sp - (PL_stack_base + oldmark);
2927 if (!(flags & G_KEEPERR)) {
2935 /* my_exit() was called */
2936 SET_CURSTASH(PL_defstash);
2940 NOT_REACHED; /* NOTREACHED */
2943 PL_restartjmpenv = NULL;
2944 PL_op = PL_restartop;
2949 PL_stack_sp = PL_stack_base + oldmark;
2950 if ((flags & G_WANT) == G_ARRAY)
2954 *++PL_stack_sp = &PL_sv_undef;
2960 if (flags & G_DISCARD) {
2961 PL_stack_sp = PL_stack_base + oldmark;
2971 =for apidoc p||eval_pv
2973 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2979 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2981 SV* sv = newSVpv(p, 0);
2983 PERL_ARGS_ASSERT_EVAL_PV;
2985 eval_sv(sv, G_SCALAR);
2994 /* just check empty string or undef? */
2995 if (croak_on_error) {
2996 SV * const errsv = ERRSV;
2997 if(SvTRUE_NN(errsv))
2998 /* replace with croak_sv? */
2999 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3005 /* Require a module. */
3008 =head1 Embedding Functions
3010 =for apidoc p||require_pv
3012 Tells Perl to C<require> the file named by the string argument. It is
3013 analogous to the Perl code C<eval "require '$file'">. It's even
3014 implemented that way; consider using load_module instead.
3019 Perl_require_pv(pTHX_ const char *pv)
3024 PERL_ARGS_ASSERT_REQUIRE_PV;
3026 PUSHSTACKi(PERLSI_REQUIRE);
3027 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3028 eval_sv(sv_2mortal(sv), G_DISCARD);
3033 S_usage(pTHX) /* XXX move this out into a module ? */
3035 /* This message really ought to be max 23 lines.
3036 * Removed -h because the user already knows that option. Others? */
3038 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3039 minimum of 509 character string literals. */
3040 static const char * const usage_msg[] = {
3041 " -0[octal] specify record separator (\\0, if no argument)\n"
3042 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3043 " -C[number/list] enables the listed Unicode features\n"
3044 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3045 " -d[:debugger] run program under debugger\n"
3046 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3047 " -e program one line of program (several -e's allowed, omit programfile)\n"
3048 " -E program like -e, but enables all optional features\n"
3049 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3050 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3051 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3052 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3053 " -l[octal] enable line ending processing, specifies line terminator\n"
3054 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3055 " -n assume \"while (<>) { ... }\" loop around program\n"
3056 " -p assume loop like -n but print line also, like sed\n"
3057 " -s enable rudimentary parsing for switches after programfile\n"
3058 " -S look for programfile using PATH environment variable\n",
3059 " -t enable tainting warnings\n"
3060 " -T enable tainting checks\n"
3061 " -u dump core after parsing program\n"
3062 " -U allow unsafe operations\n"
3063 " -v print version, patchlevel and license\n"
3064 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3065 " -w enable many useful warnings\n"
3066 " -W enable all warnings\n"
3067 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3068 " -X disable all warnings\n"
3070 "Run 'perldoc perl' for more help with Perl.\n\n",
3073 const char * const *p = usage_msg;
3074 PerlIO *out = PerlIO_stdout();
3077 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3080 PerlIO_puts(out, *p++);
3084 /* convert a string of -D options (or digits) into an int.
3085 * sets *s to point to the char after the options */
3089 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3091 static const char * const usage_msgd[] = {
3092 " Debugging flag values: (see also -d)\n"
3093 " p Tokenizing and parsing (with v, displays parse stack)\n"
3094 " s Stack snapshots (with v, displays all stacks)\n"
3095 " l Context (loop) stack processing\n"
3096 " t Trace execution\n"
3097 " o Method and overloading resolution\n",
3098 " c String/numeric conversions\n"
3099 " P Print profiling info, source file input state\n"
3100 " m Memory and SV allocation\n"
3101 " f Format processing\n"
3102 " r Regular expression parsing and execution\n"
3103 " x Syntax tree dump\n",
3104 " u Tainting checks\n"
3105 " H Hash dump -- usurps values()\n"
3106 " X Scratchpad allocation\n"
3108 " S Op slab allocation\n"
3110 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3111 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3112 " v Verbose: use in conjunction with other flags\n"
3113 " C Copy On Write\n"
3114 " A Consistency checks on internal structures\n"
3115 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3116 " M trace smart match resolution\n"
3117 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3118 " L trace some locale setting information--for Perl core development\n",
3119 " i trace PerlIO layer processing\n",
3124 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3127 /* if adding extra options, remember to update DEBUG_MASK */
3128 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
3130 for (; isWORDCHAR(**s); (*s)++) {
3131 const char * const d = strchr(debopts,**s);
3133 uv |= 1 << (d - debopts);
3134 else if (ckWARN_d(WARN_DEBUGGING))
3135 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3136 "invalid option -D%c, use -D'' to see choices\n", **s);
3139 else if (isDIGIT(**s)) {
3141 if (grok_atoUV(*s, &uv, &e))
3143 for (; isWORDCHAR(**s); (*s)++) ;
3145 else if (givehelp) {
3146 const char *const *p = usage_msgd;
3147 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3149 return (int)uv; /* ignore any UV->int conversion loss */
3153 /* This routine handles any switches that can be given during run */
3156 Perl_moreswitches(pTHX_ const char *s)
3160 const char option = *s; /* used to remember option in -m/-M code */
3162 PERL_ARGS_ASSERT_MORESWITCHES;
3170 SvREFCNT_dec(PL_rs);
3171 if (s[1] == 'x' && s[2]) {
3172 const char *e = s+=2;
3178 flags = PERL_SCAN_SILENT_ILLDIGIT;
3179 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3180 if (s + numlen < e) {
3181 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3185 PL_rs = newSVpvs("");
3186 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3187 tmps = (U8*)SvPVX(PL_rs);
3188 uvchr_to_utf8(tmps, rschar);
3189 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3194 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3195 if (rschar & ~((U8)~0))
3196 PL_rs = &PL_sv_undef;
3197 else if (!rschar && numlen >= 2)
3198 PL_rs = newSVpvs("");
3200 char ch = (char)rschar;
3201 PL_rs = newSVpvn(&ch, 1);
3204 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3209 PL_unicode = parse_unicode_opts( (const char **)&s );
3210 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3218 while (*s && !isSPACE(*s)) ++s;
3219 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3231 forbid_setid('d', FALSE);
3234 /* -dt indicates to the debugger that threads will be used */
3235 if (*s == 't' && !isWORDCHAR(s[1])) {
3237 my_setenv("PERL5DB_THREADED", "1");
3240 /* The following permits -d:Mod to accepts arguments following an =
3241 in the fashion that -MSome::Mod does. */
3242 if (*s == ':' || *s == '=') {
3249 sv = newSVpvs("no Devel::");
3251 sv = newSVpvs("use Devel::");
3255 end = s + strlen(s);
3257 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3258 while(isWORDCHAR(*s) || *s==':') ++s;
3260 sv_catpvn(sv, start, end - start);
3262 sv_catpvn(sv, start, s-start);
3263 /* Don't use NUL as q// delimiter here, this string goes in the
3265 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3268 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3272 PL_perldb = PERLDB_ALL;
3279 forbid_setid('D', FALSE);
3281 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3282 #else /* !DEBUGGING */
3283 if (ckWARN_d(WARN_DEBUGGING))
3284 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3285 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3286 for (s++; isWORDCHAR(*s); s++) ;
3289 NOT_REACHED; /* NOTREACHED */
3293 NOT_REACHED; /* NOTREACHED */
3296 Safefree(PL_inplace);
3297 #if defined(__CYGWIN__) /* do backup extension automagically */
3298 if (*(s+1) == '\0') {
3299 PL_inplace = savepvs(".bak");
3302 #endif /* __CYGWIN__ */
3304 const char * const start = ++s;
3305 while (*s && !isSPACE(*s))
3308 PL_inplace = savepvn(start, s - start);
3312 if (*s == '-') /* Additional switches on #! line. */
3316 case 'I': /* -I handled both here and in parse_body() */
3317 forbid_setid('I', FALSE);
3319 while (*s && isSPACE(*s))
3324 /* ignore trailing spaces (possibly followed by other switches) */
3326 for (e = p; *e && !isSPACE(*e); e++) ;
3330 } while (*p && *p != '-');
3332 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3338 Perl_croak(aTHX_ "No directory specified for -I");
3344 SvREFCNT_dec(PL_ors_sv);
3350 PL_ors_sv = newSVpvs("\n");
3351 numlen = 3 + (*s == '0');
3352 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3356 if (RsPARA(PL_rs)) {
3357 PL_ors_sv = newSVpvs("\n\n");
3360 PL_ors_sv = newSVsv(PL_rs);
3365 forbid_setid('M', FALSE); /* XXX ? */
3368 forbid_setid('m', FALSE); /* XXX ? */
3373 const char *use = "use ";
3375 /* -M-foo == 'no foo' */
3376 /* Leading space on " no " is deliberate, to make both
3377 possibilities the same length. */
3378 if (*s == '-') { use = " no "; ++s; }
3379 sv = newSVpvn(use,4);
3381 /* We allow -M'Module qw(Foo Bar)' */
3382 while(isWORDCHAR(*s) || *s==':') {
3391 Perl_croak(aTHX_ "Module name required with -%c option",
3394 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3395 "contains single ':'",
3396 (int)(s - start), start, option);
3397 end = s + strlen(s);
3399 sv_catpvn(sv, start, end - start);
3400 if (option == 'm') {
3402 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3403 sv_catpvs( sv, " ()");
3406 sv_catpvn(sv, start, s-start);
3407 /* Use NUL as q''-delimiter. */
3408 sv_catpvs(sv, " split(/,/,q\0");
3410 sv_catpvn(sv, s, end - s);
3411 sv_catpvs(sv, "\0)");
3414 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3417 Perl_croak(aTHX_ "Missing argument to -%c", option);
3428 forbid_setid('s', FALSE);
3429 PL_doswitches = TRUE;
3434 #if defined(SILENT_NO_TAINT_SUPPORT)
3435 /* silently ignore */
3436 #elif defined(NO_TAINT_SUPPORT)
3437 Perl_croak_nocontext("This perl was compiled without taint support. "
3438 "Cowardly refusing to run with -t or -T flags");
3446 PL_do_undump = TRUE;
3456 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3457 PL_dowarn |= G_WARN_ON;
3462 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3463 if (!specialWARN(PL_compiling.cop_warnings))
3464 PerlMemShared_free(PL_compiling.cop_warnings);
3465 PL_compiling.cop_warnings = pWARN_ALL ;
3469 PL_dowarn = G_WARN_ALL_OFF;
3470 if (!specialWARN(PL_compiling.cop_warnings))
3471 PerlMemShared_free(PL_compiling.cop_warnings);
3472 PL_compiling.cop_warnings = pWARN_NONE ;
3479 if (s[0] == '-') /* Additional switches on #! line. */
3484 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3490 #ifdef ALTERNATE_SHEBANG
3491 case 'S': /* OS/2 needs -S on "extproc" line. */
3494 case 'e': case 'f': case 'x': case 'E':
3495 #ifndef ALTERNATE_SHEBANG
3499 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3502 "Unrecognized switch: -%.1s (-h will show valid options)",s
3512 PerlIO * PIO_stdout;
3514 const char * const level_str = "v" PERL_VERSION_STRING;
3515 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3516 #ifdef PERL_PATCHNUM
3518 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3519 static const char num [] = PERL_PATCHNUM "*";
3521 static const char num [] = PERL_PATCHNUM;
3524 const STRLEN num_len = sizeof(num)-1;
3525 /* A very advanced compiler would fold away the strnEQ
3526 and this whole conditional, but most (all?) won't do it.
3527 SV level could also be replaced by with preprocessor
3530 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3531 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3532 of the interp so it might contain format characters
3534 level = newSVpvn(num, num_len);
3536 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3540 SV* level = newSVpvn(level_str, level_len);
3541 #endif /* #ifdef PERL_PATCHNUM */
3542 PIO_stdout = PerlIO_stdout();
3543 PerlIO_printf(PIO_stdout,
3544 "\nThis is perl " STRINGIFY(PERL_REVISION)
3545 ", version " STRINGIFY(PERL_VERSION)
3546 ", subversion " STRINGIFY(PERL_SUBVERSION)
3547 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3549 SvREFCNT_dec_NN(level);
3551 #if defined(LOCAL_PATCH_COUNT)
3552 if (LOCAL_PATCH_COUNT > 0)
3553 PerlIO_printf(PIO_stdout,
3554 "\n(with %d registered patch%s, "
3555 "see perl -V for more detail)",
3557 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3560 PerlIO_printf(PIO_stdout,
3561 "\n\nCopyright 1987-2016, Larry Wall\n");
3563 PerlIO_printf(PIO_stdout,
3564 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3567 PerlIO_printf(PIO_stdout,
3568 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3569 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3572 PerlIO_printf(PIO_stdout,
3573 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3574 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3577 PerlIO_printf(PIO_stdout,
3578 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3581 PerlIO_printf(PIO_stdout,
3582 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3585 PerlIO_printf(PIO_stdout,
3586 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3589 PerlIO_printf(PIO_stdout,
3590 "WINCE port by Rainer Keuchel, 2001-2002\n"
3591 "Built on " __DATE__ " " __TIME__ "\n\n");
3594 #ifdef __SYMBIAN32__
3595 PerlIO_printf(PIO_stdout,
3596 "Symbian port by Nokia, 2004-2005\n");
3598 #ifdef BINARY_BUILD_NOTICE
3599 BINARY_BUILD_NOTICE;
3601 PerlIO_printf(PIO_stdout,
3603 Perl may be copied only under the terms of either the Artistic License or the\n\
3604 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3605 Complete documentation for Perl, including FAQ lists, should be found on\n\
3606 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3607 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3611 /* compliments of Tom Christiansen */
3613 /* unexec() can be found in the Gnu emacs distribution */
3614 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3617 #include <lib$routines.h>
3621 Perl_my_unexec(pTHX)
3624 SV * prog = newSVpv(BIN_EXP, 0);
3625 SV * file = newSVpv(PL_origfilename, 0);
3629 sv_catpvs(prog, "/perl");
3630 sv_catpvs(file, ".perldump");
3632 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3633 /* unexec prints msg to stderr in case of failure */
3634 PerlProc_exit(status);
3636 PERL_UNUSED_CONTEXT;
3638 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3639 # elif defined(WIN32) || defined(__CYGWIN__)
3640 Perl_croak_nocontext("dump is not supported");
3642 ABORT(); /* for use with undump */
3647 /* initialize curinterp */
3652 # define PERLVAR(prefix,var,type)
3653 # define PERLVARA(prefix,var,n,type)
3654 # if defined(PERL_IMPLICIT_CONTEXT)
3655 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3656 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3658 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3659 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3661 # include "intrpvar.h"
3667 # define PERLVAR(prefix,var,type)
3668 # define PERLVARA(prefix,var,n,type)
3669 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3670 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3671 # include "intrpvar.h"
3681 S_init_main_stash(pTHX)
3685 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3686 /* We know that the string "main" will be in the global shared string
3687 table, so it's a small saving to use it rather than allocate another
3689 PL_curstname = newSVpvs_share("main");
3690 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3691 /* If we hadn't caused another reference to "main" to be in the shared
3692 string table above, then it would be worth reordering these two,
3693 because otherwise all we do is delete "main" from it as a consequence
3694 of the SvREFCNT_dec, only to add it again with hv_name_set */
3695 SvREFCNT_dec(GvHV(gv));
3696 hv_name_set(PL_defstash, "main", 4, 0);
3697 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3699 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3701 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3702 GvMULTI_on(PL_incgv);
3703 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3704 SvREFCNT_inc_simple_void(PL_hintgv);
3705 GvMULTI_on(PL_hintgv);
3706 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3707 SvREFCNT_inc_simple_void(PL_defgv);
3708 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3709 SvREFCNT_inc_simple_void(PL_errgv);
3710 GvMULTI_on(PL_errgv);
3711 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3712 SvREFCNT_inc_simple_void(PL_replgv);
3713 GvMULTI_on(PL_replgv);
3714 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3715 #ifdef PERL_DONT_CREATE_GVSV
3716 (void)gv_SVadd(PL_errgv);
3718 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3720 SET_CURSTASH(PL_defstash);
3721 CopSTASH_set(&PL_compiling, PL_defstash);
3722 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3723 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3725 /* We must init $/ before switches are processed. */
3726 sv_setpvs(get_sv("/", GV_ADD), "\n");
3730 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3733 PerlIO *rsfp = NULL;
3737 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3740 PL_origfilename = savepvs("-e");
3745 /* if find_script() returns, it returns a malloc()-ed value */
3746 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3748 if (strnEQ(scriptname, "/dev/fd/", 8)
3749 && isDIGIT(scriptname[8])
3750 && grok_atoUV(scriptname + 8, &uv, &s)
3751 && uv <= PERL_INT_MAX
3756 * Tell apart "normal" usage of fdscript, e.g.
3757 * with bash on FreeBSD:
3758 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3759 * from usage in suidperl.
3760 * Does any "normal" usage leave garbage after the number???
3761 * Is it a mistake to use a similar /dev/fd/ construct for
3766 * Be supersafe and do some sanity-checks.
3767 * Still, can we be sure we got the right thing?
3770 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3773 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3775 scriptname = savepv(s + 1);
3776 Safefree(PL_origfilename);
3777 PL_origfilename = (char *)scriptname;
3782 CopFILE_free(PL_curcop);
3783 CopFILE_set(PL_curcop, PL_origfilename);
3784 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3785 scriptname = (char *)"";
3786 if (fdscript >= 0) {
3787 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3789 else if (!*scriptname) {
3790 forbid_setid(0, *suidscript);
3794 #ifdef FAKE_BIT_BUCKET
3795 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3796 * is called) and still have the "-e" work. (Believe it or not,
3797 * a /dev/null is required for the "-e" to work because source
3798 * filter magic is used to implement it. ) This is *not* a general
3799 * replacement for a /dev/null. What we do here is create a temp
3800 * file (an empty file), open up that as the script, and then
3801 * immediately close and unlink it. Close enough for jazz. */
3802 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3803 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3804 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3805 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3806 FAKE_BIT_BUCKET_TEMPLATE
3808 const char * const err = "Failed to create a fake bit bucket";
3809 if (strEQ(scriptname, BIT_BUCKET)) {
3810 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3811 int old_umask = umask(0177);
3812 int tmpfd = mkstemp(tmpname);
3815 scriptname = tmpname;
3818 Perl_croak(aTHX_ err);
3821 scriptname = mktemp(tmpname);
3823 Perl_croak(aTHX_ err);
3828 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3829 #ifdef FAKE_BIT_BUCKET
3830 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3831 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3832 && strlen(scriptname) == sizeof(tmpname) - 1) {
3835 scriptname = BIT_BUCKET;
3839 /* PSz 16 Sep 03 Keep neat error message */
3841 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3843 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3844 CopFILE(PL_curcop), Strerror(errno));
3846 fd = PerlIO_fileno(rsfp);
3847 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3849 /* ensure close-on-exec */
3850 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3851 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3852 CopFILE(PL_curcop), Strerror(errno));
3858 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3859 && S_ISDIR(tmpstatbuf.st_mode)))
3860 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3868 * I_SYSSTATVFS HAS_FSTATVFS
3870 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3871 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3872 * here so that metaconfig picks them up. */
3875 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3876 /* Don't even need this function. */
3879 S_validate_suid(pTHX_ PerlIO *rsfp)
3881 const Uid_t my_uid = PerlProc_getuid();
3882 const Uid_t my_euid = PerlProc_geteuid();
3883 const Gid_t my_gid = PerlProc_getgid();
3884 const Gid_t my_egid = PerlProc_getegid();
3886 PERL_ARGS_ASSERT_VALIDATE_SUID;
3888 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3890 int fd = PerlIO_fileno(rsfp);
3892 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3893 Perl_croak_nocontext( "Illegal suidscript");
3895 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3897 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3900 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3901 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3902 /* not set-id, must be wrapped */
3905 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3908 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3913 PERL_ARGS_ASSERT_FIND_BEGINNING;
3915 /* skip forward in input to the real script? */
3918 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3919 Perl_croak(aTHX_ "No Perl script found in input\n");
3921 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3922 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3923 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3925 while (*s == ' ' || *s == '\t') s++;
3927 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3928 || s2[-1] == '_') s2--;
3929 if (strnEQ(s2-4,"perl",4))
3930 while ((s = moreswitches(s)))
3939 /* no need to do anything here any more if we don't
3941 #ifndef NO_TAINT_SUPPORT
3942 const Uid_t my_uid = PerlProc_getuid();
3943 const Uid_t my_euid = PerlProc_geteuid();
3944 const Gid_t my_gid = PerlProc_getgid();
3945 const Gid_t my_egid = PerlProc_getegid();
3947 PERL_UNUSED_CONTEXT;
3949 /* Should not happen: */
3950 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3951 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3955 * Should go by suidscript, not uid!=euid: why disallow
3956 * system("ls") in scripts run from setuid things?
3957 * Or, is this run before we check arguments and set suidscript?
3958 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3959 * (We never have suidscript, can we be sure to have fdscript?)
3960 * Or must then go by UID checks? See comments in forbid_setid also.
3964 /* This is used very early in the lifetime of the program,
3965 * before even the options are parsed, so PL_tainting has
3966 * not been initialized properly. */
3968 Perl_doing_taint(int argc, char *argv[], char *envp[])
3970 #ifndef PERL_IMPLICIT_SYS
3971 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3972 * before we have an interpreter-- and the whole point of this
3973 * function is to be called at such an early stage. If you are on
3974 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3975 * "tainted because running with altered effective ids', you'll
3976 * have to add your own checks somewhere in here. The two most
3977 * known samples of 'implicitness' are Win32 and NetWare, neither
3978 * of which has much of concept of 'uids'. */
3979 Uid_t uid = PerlProc_getuid();
3980 Uid_t euid = PerlProc_geteuid();
3981 Gid_t gid = PerlProc_getgid();
3982 Gid_t egid = PerlProc_getegid();
3989 if (uid && (euid != uid || egid != gid))
3991 #endif /* !PERL_IMPLICIT_SYS */
3992 /* This is a really primitive check; environment gets ignored only
3993 * if -T are the first chars together; otherwise one gets
3994 * "Too late" message. */
3995 if ( argc > 1 && argv[1][0] == '-'
3996 && isALPHA_FOLD_EQ(argv[1][1], 't'))
4001 /* Passing the flag as a single char rather than a string is a slight space
4002 optimisation. The only message that isn't /^-.$/ is
4003 "program input from stdin", which is substituted in place of '\0', which
4004 could never be a command line flag. */
4006 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
4008 char string[3] = "-x";
4009 const char *message = "program input from stdin";
4011 PERL_UNUSED_CONTEXT;
4017 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4018 if (PerlProc_getuid() != PerlProc_geteuid())
4019 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4020 if (PerlProc_getgid() != PerlProc_getegid())
4021 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4022 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4024 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4028 Perl_init_dbargs(pTHX)
4030 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4035 /* Someone has already created it.
4036 It might have entries, and if we just turn off AvREAL(), they will
4037 "leak" until global destruction. */
4039 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4040 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4042 AvREIFY_only(PL_dbargs);
4046 Perl_init_debugger(pTHX)
4048 HV * const ostash = PL_curstash;
4051 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4053 Perl_init_dbargs(aTHX);
4054 PL_DBgv = MUTABLE_GV(
4055 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4057 PL_DBline = MUTABLE_GV(
4058 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4060 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4061 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4063 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4064 if (!SvIOK(PL_DBsingle))
4065 sv_setiv(PL_DBsingle, 0);
4066 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4067 mg->mg_private = DBVARMG_SINGLE;
4068 SvSETMAGIC(PL_DBsingle);
4070 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4071 if (!SvIOK(PL_DBtrace))
4072 sv_setiv(PL_DBtrace, 0);
4073 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4074 mg->mg_private = DBVARMG_TRACE;
4075 SvSETMAGIC(PL_DBtrace);
4077 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4078 if (!SvIOK(PL_DBsignal))
4079 sv_setiv(PL_DBsignal, 0);
4080 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4081 mg->mg_private = DBVARMG_SIGNAL;
4082 SvSETMAGIC(PL_DBsignal);
4084 SvREFCNT_dec(PL_curstash);
4085 PL_curstash = ostash;
4088 #ifndef STRESS_REALLOC
4089 #define REASONABLE(size) (size)
4090 #define REASONABLE_but_at_least(size,min) (size)
4092 #define REASONABLE(size) (1) /* unreasonable */
4093 #define REASONABLE_but_at_least(size,min) (min)
4097 Perl_init_stacks(pTHX)
4101 /* start with 128-item stack and 8K cxstack */
4102 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4103 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4104 PL_curstackinfo->si_type = PERLSI_MAIN;
4105 PL_curstack = PL_curstackinfo->si_stack;
4106 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4108 PL_stack_base = AvARRAY(PL_curstack);
4109 PL_stack_sp = PL_stack_base;
4110 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4112 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4115 PL_tmps_max = REASONABLE(128);
4117 Newx(PL_markstack,REASONABLE(32),I32);
4118 PL_markstack_ptr = PL_markstack;
4119 PL_markstack_max = PL_markstack + REASONABLE(32);
4123 Newx(PL_scopestack,REASONABLE(32),I32);
4125 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4127 PL_scopestack_ix = 0;
4128 PL_scopestack_max = REASONABLE(32);
4130 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4131 Newx(PL_savestack, size, ANY);
4132 PL_savestack_ix = 0;
4133 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4134 PL_savestack_max = size - SS_MAXPUSH;
4142 while (PL_curstackinfo->si_next)
4143 PL_curstackinfo = PL_curstackinfo->si_next;
4144 while (PL_curstackinfo) {
4145 PERL_SI *p = PL_curstackinfo->si_prev;
4146 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4147 Safefree(PL_curstackinfo->si_cxstack);
4148 Safefree(PL_curstackinfo);
4149 PL_curstackinfo = p;
4151 Safefree(PL_tmps_stack);
4152 Safefree(PL_markstack);
4153 Safefree(PL_scopestack);
4155 Safefree(PL_scopestack_name);
4157 Safefree(PL_savestack);
4161 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4163 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4164 AV *const isa = GvAVn(gv);
4167 PERL_ARGS_ASSERT_POPULATE_ISA;
4169 if(AvFILLp(isa) != -1)
4172 /* NOTE: No support for tied ISA */
4174 va_start(args, len);
4176 const char *const parent = va_arg(args, const char*);
4181 parent_len = va_arg(args, size_t);
4183 /* Arguments are supplied with a trailing :: */
4184 assert(parent_len > 2);
4185 assert(parent[parent_len - 1] == ':');
4186 assert(parent[parent_len - 2] == ':');
4187 av_push(isa, newSVpvn(parent, parent_len - 2));
4188 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4195 S_init_predump_symbols(pTHX)
4200 sv_setpvs(get_sv("\"", GV_ADD), " ");
4201 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4204 /* Historically, PVIOs were blessed into IO::Handle, unless
4205 FileHandle was loaded, in which case they were blessed into
4206 that. Action at a distance.
4207 However, if we simply bless into IO::Handle, we break code
4208 that assumes that PVIOs will have (among others) a seek
4209 method. IO::File inherits from IO::Handle and IO::Seekable,
4210 and provides the needed methods. But if we simply bless into
4211 it, then we break code that assumed that by loading
4212 IO::Handle, *it* would work.
4213 So a compromise is to set up the correct @IO::File::ISA,
4214 so that code that does C<use IO::Handle>; will still work.
4217 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4218 STR_WITH_LEN("IO::Handle::"),
4219 STR_WITH_LEN("IO::Seekable::"),
4220 STR_WITH_LEN("Exporter::"),
4223 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4224 GvMULTI_on(PL_stdingv);
4225 io = GvIOp(PL_stdingv);
4226 IoTYPE(io) = IoTYPE_RDONLY;
4227 IoIFP(io) = PerlIO_stdin();
4228 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4230 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4232 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4235 IoTYPE(io) = IoTYPE_WRONLY;
4236 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4238 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4240 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4242 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4243 GvMULTI_on(PL_stderrgv);
4244 io = GvIOp(PL_stderrgv);
4245 IoTYPE(io) = IoTYPE_WRONLY;
4246 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4247 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4249 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4251 PL_statname = newSVpvs(""); /* last filename we did stat on */
4255 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4257 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4259 argc--,argv++; /* skip name of script */
4260 if (PL_doswitches) {
4261 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4265 if (argv[0][1] == '-' && !argv[0][2]) {
4269 if ((s = strchr(argv[0], '='))) {
4270 const char *const start_name = argv[0] + 1;
4271 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4272 TRUE, SVt_PV)), s + 1);
4275 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4278 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4279 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4280 GvMULTI_on(PL_argvgv);
4281 av_clear(GvAVn(PL_argvgv));
4282 for (; argc > 0; argc--,argv++) {
4283 SV * const sv = newSVpv(argv[0],0);
4284 av_push(GvAV(PL_argvgv),sv);
4285 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4286 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4289 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4290 (void)sv_utf8_decode(sv);
4294 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4295 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4296 "-i used with no filenames on the command line, "
4297 "reading from STDIN");
4301 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4308 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4310 PL_toptarget = newSV_type(SVt_PVIV);
4311 sv_setpvs(PL_toptarget, "");
4312 PL_bodytarget = newSV_type(SVt_PVIV);
4313 sv_setpvs(PL_bodytarget, "");
4314 PL_formtarget = PL_bodytarget;
4318 init_argv_symbols(argc,argv);
4320 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4321 sv_setpv(GvSV(tmpgv),PL_origfilename);
4323 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4325 bool env_is_not_environ;
4326 SvREFCNT_inc_simple_void_NN(PL_envgv);
4327 GvMULTI_on(PL_envgv);
4328 hv = GvHVn(PL_envgv);
4329 hv_magic(hv, NULL, PERL_MAGIC_env);
4331 #ifdef USE_ENVIRON_ARRAY
4332 /* Note that if the supplied env parameter is actually a copy
4333 of the global environ then it may now point to free'd memory
4334 if the environment has been modified since. To avoid this
4335 problem we treat env==NULL as meaning 'use the default'
4339 env_is_not_environ = env != environ;
4340 if (env_is_not_environ
4341 # ifdef USE_ITHREADS
4342 && PL_curinterp == aTHX
4354 for (; *env; env++) {
4357 if (!(s = strchr(old_var,'=')) || s == old_var)
4361 #if defined(MSDOS) && !defined(DJGPP)
4363 (void)strupr(old_var);
4366 if (hv_exists(hv, old_var, nlen)) {
4367 const char *name = savepvn(old_var, nlen);
4369 /* make sure we use the same value as getenv(), otherwise code that
4370 uses getenv() (like setlocale()) might see a different value to %ENV
4372 sv = newSVpv(PerlEnv_getenv(name), 0);
4374 /* keep a count of the dups of this name so we can de-dup environ later */
4375 if (hv_exists(dups, name, nlen))
4376 ++SvIVX(*hv_fetch(dups, name, nlen, 0));
4378 (void)hv_store(dups, name, nlen, newSViv(1), 0);
4383 sv = newSVpv(s+1, 0);
4385 (void)hv_store(hv, old_var, nlen, sv, 0);
4386 if (env_is_not_environ)
4390 /* environ has some duplicate definitions, remove them */
4393 while ((entry = hv_iternext_flags(dups, 0))) {
4395 const char *name = HePV(entry, nlen);
4396 IV count = SvIV(HeVAL(entry));
4398 SV **valp = hv_fetch(hv, name, nlen, 0);
4402 /* try to remove any duplicate names, depending on the
4403 * implementation used in my_setenv() the iteration might
4404 * not be necessary, but let's be safe.
4406 for (i = 0; i < count; ++i)
4409 /* and set it back to the value we set $ENV{name} to */
4410 my_setenv(name, SvPV_nolen(*valp));
4413 SvREFCNT_dec_NN(dups);
4415 #endif /* USE_ENVIRON_ARRAY */
4416 #endif /* !PERL_MICRO */
4420 /* touch @F array to prevent spurious warnings 20020415 MJD */
4422 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4427 S_init_perllib(pTHX)
4430 const char *perl5lib = NULL;
4433 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4437 if (!TAINTING_get) {
4439 perl5lib = PerlEnv_getenv("PERL5LIB");
4441 * It isn't possible to delete an environment variable with
4442 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4443 * case we treat PERL5LIB as undefined if it has a zero-length value.
4445 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4446 if (perl5lib && *perl5lib != '\0')
4450 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4452 s = PerlEnv_getenv("PERLLIB");
4454 incpush_use_sep(s, 0, 0);
4457 /* Treat PERL5?LIB as a possible search list logical name -- the
4458 * "natural" VMS idiom for a Unix path string. We allow each
4459 * element to be a set of |-separated directories for compatibility.
4463 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4465 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4466 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4468 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4469 incpush_use_sep(buf, 0, 0);
4474 #ifndef PERL_IS_MINIPERL
4475 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4476 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4478 /* Use the ~-expanded versions of APPLLIB (undocumented),
4479 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4482 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4483 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4487 /* sitearch is always relative to sitelib on Windows for
4488 * DLL-based path intuition to work correctly */
4489 # if !defined(WIN32)
4490 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4491 INCPUSH_CAN_RELOCATE);
4497 /* this picks up sitearch as well */
4498 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4500 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4502 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4506 #ifdef PERL_VENDORARCH_EXP
4507 /* vendorarch is always relative to vendorlib on Windows for
4508 * DLL-based path intuition to work correctly */
4509 # if !defined(WIN32)
4510 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4511 INCPUSH_CAN_RELOCATE);
4515 #ifdef PERL_VENDORLIB_EXP
4517 /* this picks up vendorarch as well */
4518 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4520 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4522 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4523 INCPUSH_CAN_RELOCATE);
4528 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4532 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4536 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4538 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4541 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4543 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4547 #ifdef PERL_OTHERLIBDIRS
4548 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4549 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4550 |INCPUSH_CAN_RELOCATE);
4553 if (!TAINTING_get) {
4556 * It isn't possible to delete an environment variable with
4557 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4558 * case we treat PERL5LIB as undefined if it has a zero-length value.
4560 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4561 if (perl5lib && *perl5lib != '\0')
4565 incpush_use_sep(perl5lib, 0,
4566 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4568 /* Treat PERL5?LIB as a possible search list logical name -- the
4569 * "natural" VMS idiom for a Unix path string. We allow each
4570 * element to be a set of |-separated directories for compatibility.
4574 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4576 incpush_use_sep(buf, 0,
4577 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4578 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4582 /* Use the ~-expanded versions of APPLLIB (undocumented),
4583 SITELIB and VENDORLIB for older versions
4586 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4587 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4590 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4591 /* Search for version-specific dirs below here */
4592 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4593 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4597 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4598 /* Search for version-specific dirs below here */
4599 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4600 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4603 #ifdef PERL_OTHERLIBDIRS
4604 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4605 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4606 |INCPUSH_CAN_RELOCATE);
4608 #endif /* !PERL_IS_MINIPERL */
4611 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4614 #if defined(DOSISH) || defined(__SYMBIAN32__)
4615 # define PERLLIB_SEP ';'
4618 # define PERLLIB_SEP '|'
4620 # define PERLLIB_SEP ':'
4623 #ifndef PERLLIB_MANGLE
4624 # define PERLLIB_MANGLE(s,n) (s)
4627 #ifndef PERL_IS_MINIPERL
4628 /* Push a directory onto @INC if it exists.
4629 Generate a new SV if we do this, to save needing to copy the SV we push
4632 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4636 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4638 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4639 S_ISDIR(tmpstatbuf.st_mode)) {
4641 dir = newSVsv(stem);
4643 /* Truncate dir back to stem. */
4644 SvCUR_set(dir, SvCUR(stem));
4651 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4653 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4656 PERL_ARGS_ASSERT_MAYBERELOCATE;
4659 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4660 defined to so something (in os2/os2.c), but the code has been
4661 this way, ignoring any possible changed of length, since
4662 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4664 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4670 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4672 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4673 sv_usepvn(libdir,unix,len);
4676 PerlIO_printf(Perl_error_log,
4677 "Failed to unixify @INC element \"%s\"\n",
4678 SvPV_nolen_const(libdir));
4682 /* Do the if() outside the #ifdef to avoid warnings about an unused
4685 #ifdef PERL_RELOCATABLE_INC
4687 * Relocatable include entries are marked with a leading .../
4690 * 0: Remove that leading ".../"
4691 * 1: Remove trailing executable name (anything after the last '/')
4692 * from the perl path to give a perl prefix
4694 * While the @INC element starts "../" and the prefix ends with a real
4695 * directory (ie not . or ..) chop that real directory off the prefix
4696 * and the leading "../" from the @INC element. ie a logical "../"
4698 * Finally concatenate the prefix and the remainder of the @INC element
4699 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4700 * generates /usr/local/lib/perl5
4702 const char *libpath = SvPVX(libdir);
4703 STRLEN libpath_len = SvCUR(libdir);
4704 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4706 SV * const caret_X = get_sv("\030", 0);
4707 /* Going to use the SV just as a scratch buffer holding a C
4713 /* $^X is *the* source of taint if tainting is on, hence
4714 SvPOK() won't be true. */
4716 assert(SvPOKp(caret_X));
4717 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4719 /* Firstly take off the leading .../
4720 If all else fail we'll do the paths relative to the current
4722 sv_chop(libdir, libpath + 4);
4723 /* Don't use SvPV as we're intentionally bypassing taining,
4724 mortal copies that the mg_get of tainting creates, and
4725 corruption that seems to come via the save stack.
4726 I guess that the save stack isn't correctly set up yet. */
4727 libpath = SvPVX(libdir);
4728 libpath_len = SvCUR(libdir);
4730 /* This would work more efficiently with memrchr, but as it's
4731 only a GNU extension we'd need to probe for it and
4732 implement our own. Not hard, but maybe not worth it? */
4734 prefix = SvPVX(prefix_sv);
4735 lastslash = strrchr(prefix, '/');
4737 /* First time in with the *lastslash = '\0' we just wipe off
4738 the trailing /perl from (say) /usr/foo/bin/perl
4742 while ((*lastslash = '\0'), /* Do that, come what may. */
4743 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4744 && (lastslash = strrchr(prefix, '/')))) {
4745 if (lastslash[1] == '\0'
4746 || (lastslash[1] == '.'
4747 && (lastslash[2] == '/' /* ends "/." */
4748 || (lastslash[2] == '/'
4749 && lastslash[3] == '/' /* or "/.." */
4751 /* Prefix ends "/" or "/." or "/..", any of which
4752 are fishy, so don't do any more logical cleanup.
4756 /* Remove leading "../" from path */
4759 /* Next iteration round the loop removes the last
4760 directory name from prefix by writing a '\0' in
4761 the while clause. */
4763 /* prefix has been terminated with a '\0' to the correct
4764 length. libpath points somewhere into the libdir SV.
4765 We need to join the 2 with '/' and drop the result into
4767 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4768 SvREFCNT_dec(libdir);
4769 /* And this is the new libdir. */
4772 (PerlProc_getuid() != PerlProc_geteuid() ||
4773 PerlProc_getgid() != PerlProc_getegid())) {
4774 /* Need to taint relocated paths if running set ID */
4775 SvTAINTED_on(libdir);
4778 SvREFCNT_dec(prefix_sv);
4786 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4788 #ifndef PERL_IS_MINIPERL
4789 const U8 using_sub_dirs
4790 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4791 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4792 const U8 add_versioned_sub_dirs
4793 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4794 const U8 add_archonly_sub_dirs
4795 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4796 #ifdef PERL_INC_VERSION_LIST
4797 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4800 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4801 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4802 AV *const inc = GvAVn(PL_incgv);
4804 PERL_ARGS_ASSERT_INCPUSH;
4807 /* Could remove this vestigial extra block, if we don't mind a lot of
4808 re-indenting diff noise. */
4810 SV *const libdir = mayberelocate(dir, len, flags);
4811 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4812 arranged to unshift #! line -I onto the front of @INC. However,
4813 -I can add version and architecture specific libraries, and they
4814 need to go first. The old code assumed that it was always
4815 pushing. Hence to make it work, need to push the architecture
4816 (etc) libraries onto a temporary array, then "unshift" that onto
4817 the front of @INC. */
4818 #ifndef PERL_IS_MINIPERL
4819 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4822 * BEFORE pushing libdir onto @INC we may first push version- and
4823 * archname-specific sub-directories.
4825 if (using_sub_dirs) {
4826 SV *subdir = newSVsv(libdir);
4827 #ifdef PERL_INC_VERSION_LIST
4828 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4829 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4830 const char * const *incver;
4833 if (add_versioned_sub_dirs) {
4834 /* .../version/archname if -d .../version/archname */
4835 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4836 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4838 /* .../version if -d .../version */
4839 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4840 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4843 #ifdef PERL_INC_VERSION_LIST
4845 for (incver = incverlist; *incver; incver++) {
4846 /* .../xxx if -d .../xxx */
4847 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4848 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4853 if (add_archonly_sub_dirs) {
4854 /* .../archname if -d .../archname */
4855 sv_catpvs(subdir, "/" ARCHNAME);
4856 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4860 assert (SvREFCNT(subdir) == 1);
4861 SvREFCNT_dec(subdir);
4863 #endif /* !PERL_IS_MINIPERL */
4864 /* finally add this lib directory at the end of @INC */
4866 #ifdef PERL_IS_MINIPERL
4867 const Size_t extra = 0;
4869 Size_t extra = av_tindex(av) + 1;
4871 av_unshift(inc, extra + push_basedir);
4873 av_store(inc, extra, libdir);
4874 #ifndef PERL_IS_MINIPERL
4876 /* av owns a reference, av_store() expects to be donated a
4877 reference, and av expects to be sane when it's cleared.
4878 If I wanted to be naughty and wrong, I could peek inside the
4879 implementation of av_clear(), realise that it uses
4880 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4881 and so directly steal from it (with a memcpy() to inc, and
4882 then memset() to NULL them out. But people copy code from the
4883 core expecting it to be best practise, so let's use the API.
4884 Although studious readers will note that I'm not checking any
4886 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4891 else if (push_basedir) {
4892 av_push(inc, libdir);
4895 if (!push_basedir) {
4896 assert (SvREFCNT(libdir) == 1);
4897 SvREFCNT_dec(libdir);
4903 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4907 /* This logic has been broken out from S_incpush(). It may be possible to
4910 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4912 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4913 * argument to incpush_use_sep. This allows creation of relocatable
4914 * Perl distributions that patch the binary at install time. Those
4915 * distributions will have to provide their own relocation tools; this
4916 * is not a feature otherwise supported by core Perl.
4918 #ifndef PERL_RELOCATABLE_INCPUSH
4925 /* Break at all separators */
4926 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4928 /* skip any consecutive separators */
4930 /* Uncomment the next line for PATH semantics */
4931 /* But you'll need to write tests */
4932 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4934 incpush(p, (STRLEN)(s - p), flags);
4939 incpush(p, (STRLEN)(end - p), flags);
4944 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4947 VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4953 PERL_ARGS_ASSERT_CALL_LIST;
4955 while (av_tindex(paramList) >= 0) {
4956 cv = MUTABLE_CV(av_shift(paramList));
4958 if (paramList == PL_beginav) {
4959 /* save PL_beginav for compiler */
4960 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4962 else if (paramList == PL_checkav) {
4963 /* save PL_checkav for compiler */
4964 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4966 else if (paramList == PL_unitcheckav) {
4967 /* save PL_unitcheckav for compiler */
4968 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4978 (void)SvPV_const(atsv, len);
4980 PL_curcop = &PL_compiling;
4981 CopLINE_set(PL_curcop, oldline);
4982 if (paramList == PL_beginav)
4983 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4985 Perl_sv_catpvf(aTHX_ atsv,
4986 "%s failed--call queue aborted",
4987 paramList == PL_checkav ? "CHECK"
4988 : paramList == PL_initav ? "INIT"
4989 : paramList == PL_unitcheckav ? "UNITCHECK"
4991 while (PL_scopestack_ix > oldscope)
4994 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
5001 /* my_exit() was called */
5002 while (PL_scopestack_ix > oldscope)
5005 SET_CURSTASH(PL_defstash);
5006 PL_curcop = &PL_compiling;
5007 CopLINE_set(PL_curcop, oldline);
5010 NOT_REACHED; /* NOTREACHED */
5013 PL_curcop = &PL_compiling;
5014 CopLINE_set(PL_curcop, oldline);
5017 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
5026 Perl_my_exit(pTHX_ U32 status)
5028 if (PL_exit_flags & PERL_EXIT_ABORT) {
5031 if (PL_exit_flags & PERL_EXIT_WARN) {
5032 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5033 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
5034 PL_exit_flags &= ~PERL_EXIT_ABORT;
5044 STATUS_EXIT_SET(status);
5051 Perl_my_failure_exit(pTHX)
5054 /* We have been called to fall on our sword. The desired exit code
5055 * should be already set in STATUS_UNIX, but could be shifted over
5056 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5059 * If an error code has not been set, then force the issue.
5061 if (MY_POSIX_EXIT) {
5063 /* According to the die_exit.t tests, if errno is non-zero */
5064 /* It should be used for the error status. */
5066 if (errno == EVMSERR) {
5067 STATUS_NATIVE = vaxc$errno;
5070 /* According to die_exit.t tests, if the child_exit code is */
5071 /* also zero, then we need to exit with a code of 255 */
5072 if ((errno != 0) && (errno < 256))
5073 STATUS_UNIX_EXIT_SET(errno);
5074 else if (STATUS_UNIX < 255) {
5075 STATUS_UNIX_EXIT_SET(255);
5080 /* The exit code could have been set by $? or vmsish which
5081 * means that it may not have fatal set. So convert
5082 * success/warning codes to fatal with out changing
5083 * the POSIX status code. The severity makes VMS native
5084 * status handling work, while UNIX mode programs use the
5085 * the POSIX exit codes.
5087 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5088 STATUS_NATIVE &= STS$M_COND_ID;
5089 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5093 /* Traditionally Perl on VMS always expects a Fatal Error. */
5094 if (vaxc$errno & 1) {
5096 /* So force success status to failure */
5097 if (STATUS_NATIVE & 1)
5102 STATUS_UNIX = EINTR; /* In case something cares */
5107 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5109 /* Encode the severity code */
5110 severity = STATUS_NATIVE & STS$M_SEVERITY;
5111 STATUS_UNIX = (severity ? severity : 1) << 8;
5113 /* Perl expects this to be a fatal error */
5114 if (severity != STS$K_SEVERE)
5123 STATUS_UNIX_SET(errno);
5125 exitstatus = STATUS_UNIX >> 8;
5126 if (exitstatus & 255)
5127 STATUS_UNIX_SET(exitstatus);
5129 STATUS_UNIX_SET(255);
5132 if (PL_exit_flags & PERL_EXIT_ABORT) {
5135 if (PL_exit_flags & PERL_EXIT_WARN) {
5136 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5137 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5138 PL_exit_flags &= ~PERL_EXIT_ABORT;
5144 S_my_exit_jump(pTHX)
5147 SvREFCNT_dec(PL_e_script);
5151 POPSTACK_TO(PL_mainstack);
5152 if (cxstack_ix >= 0) {
5154 cx_popblock(cxstack);
5162 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5164 const char * const p = SvPVX_const(PL_e_script);
5165 const char *nl = strchr(p, '\n');
5167 PERL_UNUSED_ARG(idx);
5168 PERL_UNUSED_ARG(maxlen);
5170 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5172 filter_del(read_e_script);
5175 sv_catpvn(buf_sv, p, nl-p);
5176 sv_chop(PL_e_script, nl);
5180 /* removes boilerplate code at the end of each boot_Module xsub */
5182 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5185 call_list(PL_scopestack_ix, PL_unitcheckav);
5190 * ex: set ts=8 sts=4 sw=4 et: