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);
96 MUTEX_INIT(&PL_dollarzero_mutex);
97 MUTEX_INIT(&PL_my_ctx_mutex);
100 #if defined(USE_ITHREADS)
103 /* This always happens for non-ithreads */
106 PERL_SET_THX(my_perl);
111 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114 Perl_sys_init(int* argc, char*** argv)
118 PERL_ARGS_ASSERT_SYS_INIT;
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
126 Perl_sys_init3(int* argc, char*** argv, char*** env)
130 PERL_ARGS_ASSERT_SYS_INIT3;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
148 #ifdef PERL_IMPLICIT_SYS
150 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
156 PerlInterpreter *my_perl;
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160 /* Newx() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
162 S_init_tls_and_interp(my_perl);
163 Zero(my_perl, 1, PerlInterpreter);
173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
180 =head1 Embedding Functions
182 =for apidoc perl_alloc
184 Allocates a new Perl interpreter. See L<perlembed>.
192 PerlInterpreter *my_perl;
194 /* Newx() needs interpreter, so call malloc() instead */
195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
197 S_init_tls_and_interp(my_perl);
198 #ifndef PERL_TRACK_MEMPOOL
199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
206 #endif /* PERL_IMPLICIT_SYS */
209 =for apidoc perl_construct
211 Initializes a new Perl interpreter. See L<perlembed>.
217 perl_construct(pTHXx)
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
225 PL_perl_destruct_level = 1;
227 PERL_UNUSED_ARG(my_perl);
228 if (PL_perl_destruct_level > 0)
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 #ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
239 SvREADONLY_on(&PL_sv_placeholder);
240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
243 #ifdef PERL_USES_PL_PIDSTATUS
244 PL_pidstatus = newHV();
247 PL_rs = newSVpvs("\n");
258 #if defined(LOCAL_PATCH_COUNT)
259 PL_localpatches = local_patches; /* For possible -v */
262 #ifdef HAVE_INTERP_INTERN
266 PerlIO_init(aTHX); /* Hook to IO system */
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
270 PL_errors = newSVpvs("");
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
278 PL_regex_pad = AvARRAY(PL_regex_padav);
279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
281 #ifdef USE_REENTRANT_API
282 Perl_reentrant_init(aTHX);
284 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
296 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 # ifdef USE_ENVIRON_ARRAY
310 PL_origenviron = environ;
314 /* Use sysconf(_SC_CLK_TCK) if available, if not
315 * available or if the sysconf() fails, use the HZ.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
329 if (!PL_mmap_page_size) {
330 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 SETERRNO(0, SS_NORMAL);
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338 if ((long) PL_mmap_page_size < 0) {
340 SV * const error = ERRSV;
341 SvUPGRADE(error, SVt_PV);
342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
349 # ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
352 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
361 #endif /* HAS_MMAP */
363 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372 PL_registered_mros = newHV();
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
395 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
401 =for apidoc nothreadhook
403 Stub that provides thread hook for perl_destruct when there are
410 Perl_nothreadhook(pTHX)
416 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
418 Perl_dump_sv_child(pTHX_ SV *sv)
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
423 union control_un control;
426 struct cmsghdr *cmptr;
428 unsigned char buffer[256];
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
432 if(sock == -1 || debug_fd == -1)
435 PerlIO_flush(Perl_debug_log);
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
441 be open, the wait would be forever.) */
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
462 perror("Debug leaking scalars parent sendmsg failed");
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
470 /* Return protocol is
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
480 got = readv(sock, vec, 2);
483 perror("Debug leaking scalars parent read failed");
484 PerlIO_flush(PerlIO_stderr());
487 if(got < sizeof(returned_errno) + 1) {
488 perror("Debug leaking scalars parent short read");
489 PerlIO_flush(PerlIO_stderr());
494 got = read(sock, buffer + 1, *buffer);
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
511 returned_errno, Strerror(returned_errno));
517 =for apidoc perl_destruct
519 Shuts down a Perl interpreter. See L<perlembed>.
528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
530 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
535 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537 PERL_UNUSED_ARG(my_perl);
540 assert(PL_scopestack_ix == 1);
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
545 destruct_level = PL_perl_destruct_level;
546 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
555 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
561 if (destruct_level < i) destruct_level = i;
563 #ifdef PERL_TRACK_MEMPOOL
564 /* RT #114496, for perl_free */
565 PL_perl_destruct_level = i;
571 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
577 if (PL_endav && !PL_minus_c) {
578 PERL_SET_PHASE(PERL_PHASE_END);
579 call_list(PL_scopestack_ix, PL_endav);
585 assert(PL_scopestack_ix == 0);
587 /* Need to flush since END blocks can produce output */
590 #ifdef PERL_TRACE_OPS
591 /* If we traced all Perl OP usage, report and clean up */
592 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
593 for (i = 0; i <= OP_max; ++i) {
594 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
595 PL_op_exec_cnt[i] = 0;
597 /* Utility slot for easily doing little tracing experiments in the runloop: */
598 if (PL_op_exec_cnt[OP_max+1] != 0)
599 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
600 PerlIO_printf(Perl_debug_log, "\n");
604 if (PL_threadhook(aTHX)) {
605 /* Threads hook has vetoed further cleanup */
606 PL_veto_cleanup = TRUE;
610 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
611 if (destruct_level != 0) {
612 /* Fork here to create a child. Our child's job is to preserve the
613 state of scalars prior to destruction, so that we can instruct it
614 to dump any scalars that we later find have leaked.
615 There's no subtlety in this code - it assumes POSIX, and it doesn't
619 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
620 perror("Debug leaking scalars socketpair failed");
626 perror("Debug leaking scalars fork failed");
630 /* We are the child */
631 const int sock = fd[1];
632 const int debug_fd = PerlIO_fileno(Perl_debug_log);
635 /* Our success message is an integer 0, and a char 0 */
636 static const char success[sizeof(int) + 1] = {0};
640 /* We need to close all other file descriptors otherwise we end up
641 with interesting hangs, where the parent closes its end of a
642 pipe, and sits waiting for (another) child to terminate. Only
643 that child never terminates, because it never gets EOF, because
644 we also have the far end of the pipe open. We even need to
645 close the debugging fd, because sometimes it happens to be one
646 end of a pipe, and a process is waiting on the other end for
647 EOF. Normally it would be closed at some point earlier in
648 destruction, but if we happen to cause the pipe to remain open,
649 EOF never occurs, and we get an infinite hang. Hence all the
650 games to pass in a file descriptor if it's actually needed. */
652 f = sysconf(_SC_OPEN_MAX);
654 where = "sysconf failed";
665 union control_un control;
668 struct cmsghdr *cmptr;
672 msg.msg_control = control.control;
673 msg.msg_controllen = sizeof(control.control);
674 /* We're a connected socket so we don't need a source */
678 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
680 vec[0].iov_base = (void*)⌖
681 vec[0].iov_len = sizeof(target);
683 got = recvmsg(sock, &msg, 0);
688 where = "recv failed";
691 if(got < sizeof(target)) {
692 where = "short recv";
696 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
700 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
701 where = "wrong cmsg_len";
704 if(cmptr->cmsg_level != SOL_SOCKET) {
705 where = "wrong cmsg_level";
708 if(cmptr->cmsg_type != SCM_RIGHTS) {
709 where = "wrong cmsg_type";
713 got_fd = *(int*)CMSG_DATA(cmptr);
714 /* For our last little bit of trickery, put the file descriptor
715 back into Perl_debug_log, as if we never actually closed it
717 if(got_fd != debug_fd) {
718 if (dup2(got_fd, debug_fd) == -1) {
725 PerlIO_flush(Perl_debug_log);
727 got = write(sock, &success, sizeof(success));
730 where = "write failed";
733 if(got < sizeof(success)) {
734 where = "short write";
741 int send_errno = errno;
742 unsigned char length = (unsigned char) strlen(where);
743 struct iovec failure[3] = {
744 {(void*)&send_errno, sizeof(send_errno)},
746 {(void*)where, length}
748 int got = writev(sock, failure, 3);
749 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
750 in the parent if we try to read from the socketpair after the
751 child has exited, even if there was data to read.
752 So sleep a bit to give the parent a fighting chance of
755 _exit((got == -1) ? errno : 0);
759 PL_dumper_fd = fd[0];
764 /* We must account for everything. */
766 /* Destroy the main CV and syntax tree */
767 /* Set PL_curcop now, because destroying ops can cause new SVs
768 to be generated in Perl_pad_swipe, and when running with
769 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
770 op from which the filename structure member is copied. */
771 PL_curcop = &PL_compiling;
773 /* ensure comppad/curpad to refer to main's pad */
774 if (CvPADLIST(PL_main_cv)) {
775 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
776 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
778 op_free(PL_main_root);
781 PL_main_start = NULL;
782 /* note that PL_main_cv isn't usually actually freed at this point,
783 * due to the CvOUTSIDE refs from subs compiled within it. It will
784 * get freed once all the subs are freed in sv_clean_all(), for
785 * destruct_level > 0 */
786 SvREFCNT_dec(PL_main_cv);
788 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
790 /* Tell PerlIO we are about to tear things apart in case
791 we have layers which are using resources that should
795 PerlIO_destruct(aTHX);
798 * Try to destruct global references. We do this first so that the
799 * destructors and destructees still exist. Some sv's might remain.
800 * Non-referenced objects are on their own.
804 /* unhook hooks which will soon be, or use, destroyed data */
805 SvREFCNT_dec(PL_warnhook);
807 SvREFCNT_dec(PL_diehook);
810 /* call exit list functions */
811 while (PL_exitlistlen-- > 0)
812 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
814 Safefree(PL_exitlist);
819 SvREFCNT_dec(PL_registered_mros);
821 /* jettison our possibly duplicated environment */
822 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
823 * so we certainly shouldn't free it here
826 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
827 if (environ != PL_origenviron && !PL_use_safe_putenv
829 /* only main thread can free environ[0] contents */
830 && PL_curinterp == aTHX
836 for (i = 0; environ[i]; i++)
837 safesysfree(environ[i]);
839 /* Must use safesysfree() when working with environ. */
840 safesysfree(environ);
842 environ = PL_origenviron;
845 #endif /* !PERL_MICRO */
847 if (destruct_level == 0) {
849 DEBUG_P(debprofdump());
851 #if defined(PERLIO_LAYERS)
852 /* No more IO - including error messages ! */
853 PerlIO_cleanup(aTHX);
856 CopFILE_free(&PL_compiling);
858 /* The exit() function will do everything that needs doing. */
862 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
865 /* the syntax tree is shared between clones
866 * so op_free(PL_main_root) only ReREFCNT_dec's
867 * REGEXPs in the parent interpreter
868 * we need to manually ReREFCNT_dec for the clones
871 I32 i = AvFILLp(PL_regex_padav);
872 SV **ary = AvARRAY(PL_regex_padav);
875 SvREFCNT_dec(ary[i]);
876 ary[i] = &PL_sv_undef;
882 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
883 PL_stashcache = NULL;
885 /* loosen bonds of global variables */
887 /* XXX can PL_parser still be non-null here? */
888 if(PL_parser && PL_parser->rsfp) {
889 (void)PerlIO_close(PL_parser->rsfp);
890 PL_parser->rsfp = NULL;
894 Safefree(PL_splitstr);
904 PL_doswitches = FALSE;
905 PL_dowarn = G_WARN_OFF;
906 #ifdef PERL_SAWAMPERSAND
907 PL_sawampersand = 0; /* must save all match strings */
911 Safefree(PL_inplace);
913 SvREFCNT_dec(PL_patchlevel);
916 SvREFCNT_dec(PL_e_script);
922 /* magical thingies */
924 SvREFCNT_dec(PL_ofsgv); /* *, */
927 SvREFCNT_dec(PL_ors_sv); /* $\ */
930 SvREFCNT_dec(PL_rs); /* $/ */
933 Safefree(PL_osname); /* $^O */
936 SvREFCNT_dec(PL_statname);
940 /* defgv, aka *_ should be taken care of elsewhere */
943 Safefree(PL_efloatbuf);
947 /* startup and shutdown function lists */
948 SvREFCNT_dec(PL_beginav);
949 SvREFCNT_dec(PL_beginav_save);
950 SvREFCNT_dec(PL_endav);
951 SvREFCNT_dec(PL_checkav);
952 SvREFCNT_dec(PL_checkav_save);
953 SvREFCNT_dec(PL_unitcheckav);
954 SvREFCNT_dec(PL_unitcheckav_save);
955 SvREFCNT_dec(PL_initav);
957 PL_beginav_save = NULL;
960 PL_checkav_save = NULL;
961 PL_unitcheckav = NULL;
962 PL_unitcheckav_save = NULL;
965 /* shortcuts just get cleared */
971 PL_last_in_gv = NULL;
982 SvREFCNT_dec(PL_envgv);
983 SvREFCNT_dec(PL_incgv);
984 SvREFCNT_dec(PL_argvgv);
985 SvREFCNT_dec(PL_replgv);
986 SvREFCNT_dec(PL_DBgv);
987 SvREFCNT_dec(PL_DBline);
988 SvREFCNT_dec(PL_DBsub);
997 SvREFCNT_dec(PL_argvout_stack);
998 PL_argvout_stack = NULL;
1000 SvREFCNT_dec(PL_modglobal);
1001 PL_modglobal = NULL;
1002 SvREFCNT_dec(PL_preambleav);
1003 PL_preambleav = NULL;
1004 SvREFCNT_dec(PL_subname);
1006 #ifdef PERL_USES_PL_PIDSTATUS
1007 SvREFCNT_dec(PL_pidstatus);
1008 PL_pidstatus = NULL;
1010 SvREFCNT_dec(PL_toptarget);
1011 PL_toptarget = NULL;
1012 SvREFCNT_dec(PL_bodytarget);
1013 PL_bodytarget = NULL;
1014 PL_formtarget = NULL;
1016 /* free locale stuff */
1017 #ifdef USE_LOCALE_COLLATE
1018 Safefree(PL_collation_name);
1019 PL_collation_name = NULL;
1022 #ifdef USE_LOCALE_NUMERIC
1023 Safefree(PL_numeric_name);
1024 PL_numeric_name = NULL;
1025 SvREFCNT_dec(PL_numeric_radix_sv);
1026 PL_numeric_radix_sv = NULL;
1029 /* clear character classes */
1030 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1031 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1032 PL_utf8_swash_ptrs[i] = NULL;
1034 SvREFCNT_dec(PL_utf8_mark);
1035 SvREFCNT_dec(PL_utf8_toupper);
1036 SvREFCNT_dec(PL_utf8_totitle);
1037 SvREFCNT_dec(PL_utf8_tolower);
1038 SvREFCNT_dec(PL_utf8_tofold);
1039 SvREFCNT_dec(PL_utf8_idstart);
1040 SvREFCNT_dec(PL_utf8_idcont);
1041 SvREFCNT_dec(PL_utf8_foldable);
1042 SvREFCNT_dec(PL_utf8_foldclosures);
1043 SvREFCNT_dec(PL_AboveLatin1);
1044 SvREFCNT_dec(PL_InBitmap);
1045 SvREFCNT_dec(PL_UpperLatin1);
1046 SvREFCNT_dec(PL_Latin1);
1047 SvREFCNT_dec(PL_NonL1NonFinalFold);
1048 SvREFCNT_dec(PL_HasMultiCharFold);
1049 #ifdef USE_LOCALE_CTYPE
1050 SvREFCNT_dec(PL_warn_locale);
1052 PL_utf8_mark = NULL;
1053 PL_utf8_toupper = NULL;
1054 PL_utf8_totitle = NULL;
1055 PL_utf8_tolower = NULL;
1056 PL_utf8_tofold = NULL;
1057 PL_utf8_idstart = NULL;
1058 PL_utf8_idcont = NULL;
1059 PL_utf8_foldclosures = NULL;
1060 PL_AboveLatin1 = NULL;
1062 PL_HasMultiCharFold = NULL;
1063 #ifdef USE_LOCALE_CTYPE
1064 PL_warn_locale = NULL;
1067 PL_NonL1NonFinalFold = NULL;
1068 PL_UpperLatin1 = NULL;
1069 for (i = 0; i < POSIX_CC_COUNT; i++) {
1070 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1071 PL_XPosix_ptrs[i] = NULL;
1073 PL_GCB_invlist = NULL;
1074 PL_LB_invlist = NULL;
1075 PL_SB_invlist = NULL;
1076 PL_WB_invlist = NULL;
1078 if (!specialWARN(PL_compiling.cop_warnings))
1079 PerlMemShared_free(PL_compiling.cop_warnings);
1080 PL_compiling.cop_warnings = NULL;
1081 cophh_free(CopHINTHASH_get(&PL_compiling));
1082 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1083 CopFILE_free(&PL_compiling);
1085 /* Prepare to destruct main symbol table. */
1088 /* break ref loop *:: <=> %:: */
1089 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1092 SvREFCNT_dec(PL_curstname);
1093 PL_curstname = NULL;
1095 /* clear queued errors */
1096 SvREFCNT_dec(PL_errors);
1099 SvREFCNT_dec(PL_isarev);
1102 if (destruct_level >= 2) {
1103 if (PL_scopestack_ix != 0)
1104 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1105 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1106 (long)PL_scopestack_ix);
1107 if (PL_savestack_ix != 0)
1108 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1109 "Unbalanced saves: %ld more saves than restores\n",
1110 (long)PL_savestack_ix);
1111 if (PL_tmps_floor != -1)
1112 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1113 (long)PL_tmps_floor + 1);
1114 if (cxstack_ix != -1)
1115 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1116 (long)cxstack_ix + 1);
1120 SvREFCNT_dec(PL_regex_padav);
1121 PL_regex_padav = NULL;
1122 PL_regex_pad = NULL;
1125 #ifdef PERL_IMPLICIT_CONTEXT
1126 /* the entries in this list are allocated via SV PVX's, so get freed
1127 * in sv_clean_all */
1128 Safefree(PL_my_cxt_list);
1131 /* Now absolutely destruct everything, somehow or other, loops or no. */
1133 /* the 2 is for PL_fdpid and PL_strtab */
1134 while (sv_clean_all() > 2)
1138 Safefree(PL_stashpad); /* must come after sv_clean_all */
1141 AvREAL_off(PL_fdpid); /* no surviving entries */
1142 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1145 #ifdef HAVE_INTERP_INTERN
1149 /* constant strings */
1150 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1151 SvREFCNT_dec(PL_sv_consts[i]);
1152 PL_sv_consts[i] = NULL;
1155 /* Destruct the global string table. */
1157 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1158 * so that sv_free() won't fail on them.
1159 * Now that the global string table is using a single hunk of memory
1160 * for both HE and HEK, we either need to explicitly unshare it the
1161 * correct way, or actually free things here.
1164 const I32 max = HvMAX(PL_strtab);
1165 HE * const * const array = HvARRAY(PL_strtab);
1166 HE *hent = array[0];
1169 if (hent && ckWARN_d(WARN_INTERNAL)) {
1170 HE * const next = HeNEXT(hent);
1171 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1172 "Unbalanced string table refcount: (%ld) for \"%s\"",
1173 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1180 hent = array[riter];
1185 HvARRAY(PL_strtab) = 0;
1186 HvTOTALKEYS(PL_strtab) = 0;
1188 SvREFCNT_dec(PL_strtab);
1191 /* free the pointer tables used for cloning */
1192 ptr_table_free(PL_ptr_table);
1193 PL_ptr_table = (PTR_TBL_t*)NULL;
1196 /* free special SVs */
1198 SvREFCNT(&PL_sv_yes) = 0;
1199 sv_clear(&PL_sv_yes);
1200 SvANY(&PL_sv_yes) = NULL;
1201 SvFLAGS(&PL_sv_yes) = 0;
1203 SvREFCNT(&PL_sv_no) = 0;
1204 sv_clear(&PL_sv_no);
1205 SvANY(&PL_sv_no) = NULL;
1206 SvFLAGS(&PL_sv_no) = 0;
1210 for (i=0; i<=2; i++) {
1211 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1212 sv_clear(PERL_DEBUG_PAD(i));
1213 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1214 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1218 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1219 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1221 #ifdef DEBUG_LEAKING_SCALARS
1222 if (PL_sv_count != 0) {
1227 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1228 svend = &sva[SvREFCNT(sva)];
1229 for (sv = sva + 1; sv < svend; ++sv) {
1230 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1231 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1233 " refcnt=%"UVuf pTHX__FORMAT "\n"
1234 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1236 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1238 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1240 sv->sv_debug_inpad ? "for" : "by",
1241 sv->sv_debug_optype ?
1242 PL_op_name[sv->sv_debug_optype]: "(none)",
1243 PTR2UV(sv->sv_debug_parent),
1246 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1247 Perl_dump_sv_child(aTHX_ sv);
1253 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1257 /* Wait for up to 4 seconds for child to terminate.
1258 This seems to be the least effort way of timing out on reaping
1260 struct timeval waitfor = {4, 0};
1261 int sock = PL_dumper_fd;
1265 FD_SET(sock, &rset);
1266 select(sock + 1, &rset, NULL, NULL, &waitfor);
1267 waitpid(child, &status, WNOHANG);
1272 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1278 #if defined(PERLIO_LAYERS)
1279 /* No more IO - including error messages ! */
1280 PerlIO_cleanup(aTHX);
1283 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1284 as currently layers use it rather than NULL as a marker
1285 for no arg - and will try and SvREFCNT_dec it.
1287 SvREFCNT(&PL_sv_undef) = 0;
1288 SvREADONLY_off(&PL_sv_undef);
1290 Safefree(PL_origfilename);
1291 PL_origfilename = NULL;
1292 Safefree(PL_reg_curpm);
1293 free_tied_hv_pool();
1294 Safefree(PL_op_mask);
1295 Safefree(PL_psig_name);
1296 PL_psig_name = (SV**)NULL;
1297 PL_psig_ptr = (SV**)NULL;
1299 /* We need to NULL PL_psig_pend first, so that
1300 signal handlers know not to use it */
1301 int *psig_save = PL_psig_pend;
1302 PL_psig_pend = (int*)NULL;
1303 Safefree(psig_save);
1306 TAINTING_set(FALSE);
1307 TAINT_WARN_set(FALSE);
1308 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1310 DEBUG_P(debprofdump());
1314 #ifdef USE_REENTRANT_API
1315 Perl_reentrant_free(aTHX);
1318 /* These all point to HVs that are about to be blown away.
1319 Code in core and on CPAN assumes that if the interpreter is re-started
1320 that they will be cleanly NULL or pointing to a valid HV. */
1321 PL_custom_op_names = NULL;
1322 PL_custom_op_descs = NULL;
1323 PL_custom_ops = NULL;
1327 while (PL_regmatch_slab) {
1328 regmatch_slab *s = PL_regmatch_slab;
1329 PL_regmatch_slab = PL_regmatch_slab->next;
1333 /* As the absolutely last thing, free the non-arena SV for mess() */
1336 /* we know that type == SVt_PVMG */
1338 /* it could have accumulated taint magic */
1341 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1342 moremagic = mg->mg_moremagic;
1343 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1345 Safefree(mg->mg_ptr);
1349 /* we know that type >= SVt_PV */
1350 SvPV_free(PL_mess_sv);
1351 Safefree(SvANY(PL_mess_sv));
1352 Safefree(PL_mess_sv);
1359 =for apidoc perl_free
1361 Releases a Perl interpreter. See L<perlembed>.
1371 PERL_ARGS_ASSERT_PERL_FREE;
1373 if (PL_veto_cleanup)
1376 #ifdef PERL_TRACK_MEMPOOL
1379 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1380 * value as we're probably hunting memory leaks then
1382 if (PL_perl_destruct_level == 0) {
1383 const U32 old_debug = PL_debug;
1384 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1385 thread at thread exit. */
1387 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1388 "free this thread's memory\n");
1389 PL_debug &= ~ DEBUG_m_FLAG;
1391 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1392 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1393 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1396 PL_debug = old_debug;
1401 #if defined(WIN32) || defined(NETWARE)
1402 # if defined(PERL_IMPLICIT_SYS)
1405 void *host = nw_internal_host;
1406 PerlMem_free(aTHXx);
1407 nw_delete_internal_host(host);
1409 void *host = w32_internal_host;
1410 PerlMem_free(aTHXx);
1411 win32_delete_internal_host(host);
1415 PerlMem_free(aTHXx);
1418 PerlMem_free(aTHXx);
1422 #if defined(USE_ITHREADS)
1423 /* provide destructors to clean up the thread key when libperl is unloaded */
1424 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1426 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1427 #pragma fini "perl_fini"
1428 #elif defined(__sun) && !defined(__GNUC__)
1429 #pragma fini (perl_fini)
1433 #if defined(__GNUC__)
1434 __attribute__((destructor))
1440 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1443 PL_curinterp && !PL_veto_cleanup)
1448 #endif /* THREADS */
1451 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1453 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1454 PL_exitlist[PL_exitlistlen].fn = fn;
1455 PL_exitlist[PL_exitlistlen].ptr = ptr;
1460 =for apidoc perl_parse
1462 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1467 #define SET_CURSTASH(newstash) \
1468 if (PL_curstash != newstash) { \
1469 SvREFCNT_dec(PL_curstash); \
1470 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1474 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1481 PERL_ARGS_ASSERT_PERL_PARSE;
1482 #ifndef MULTIPLICITY
1483 PERL_UNUSED_ARG(my_perl);
1485 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1487 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1489 if (s && strEQ(s, "1")) {
1490 const unsigned char *seed= PERL_HASH_SEED;
1491 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1492 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1493 while (seed < seed_end) {
1494 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1496 #ifdef PERL_HASH_RANDOMIZE_KEYS
1497 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1498 PL_HASH_RAND_BITS_ENABLED,
1499 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1501 PerlIO_printf(Perl_debug_log, "\n");
1504 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1508 struct NameTranslationInfo nti;
1509 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1516 if (PL_origalen != 0) {
1517 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1520 /* Set PL_origalen be the sum of the contiguous argv[]
1521 * elements plus the size of the env in case that it is
1522 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1523 * as the maximum modifiable length of $0. In the worst case
1524 * the area we are able to modify is limited to the size of
1525 * the original argv[0]. (See below for 'contiguous', though.)
1527 const char *s = NULL;
1529 const UV mask = ~(UV)(PTRSIZE-1);
1530 /* Do the mask check only if the args seem like aligned. */
1532 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1534 /* See if all the arguments are contiguous in memory. Note
1535 * that 'contiguous' is a loose term because some platforms
1536 * align the argv[] and the envp[]. If the arguments look
1537 * like non-aligned, assume that they are 'strictly' or
1538 * 'traditionally' contiguous. If the arguments look like
1539 * aligned, we just check that they are within aligned
1540 * PTRSIZE bytes. As long as no system has something bizarre
1541 * like the argv[] interleaved with some other data, we are
1542 * fine. (Did I just evoke Murphy's Law?) --jhi */
1543 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1545 for (i = 1; i < PL_origargc; i++) {
1546 if ((PL_origargv[i] == s + 1
1548 || PL_origargv[i] == s + 2
1553 (PL_origargv[i] > s &&
1555 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1566 #ifndef PERL_USE_SAFE_PUTENV
1567 /* Can we grab env area too to be used as the area for $0? */
1568 if (s && PL_origenviron && !PL_use_safe_putenv) {
1569 if ((PL_origenviron[0] == s + 1)
1572 (PL_origenviron[0] > s &&
1573 PL_origenviron[0] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1577 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1578 s = PL_origenviron[0];
1581 my_setenv("NoNe SuCh", NULL);
1582 /* Force copy of environment. */
1583 for (i = 1; PL_origenviron[i]; i++) {
1584 if (PL_origenviron[i] == s + 1
1587 (PL_origenviron[i] > s &&
1588 PL_origenviron[i] <=
1589 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1592 s = PL_origenviron[i];
1600 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1602 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1607 /* Come here if running an undumped a.out. */
1609 PL_origfilename = savepv(argv[0]);
1610 PL_do_undump = FALSE;
1611 cxstack_ix = -1; /* start label stack again */
1613 assert (!TAINT_get);
1617 init_postdump_symbols(argc,argv,env);
1622 op_free(PL_main_root);
1623 PL_main_root = NULL;
1625 PL_main_start = NULL;
1626 SvREFCNT_dec(PL_main_cv);
1630 oldscope = PL_scopestack_ix;
1631 PL_dowarn = G_WARN_OFF;
1636 parse_body(env,xsinit);
1637 if (PL_unitcheckav) {
1638 call_list(oldscope, PL_unitcheckav);
1641 PERL_SET_PHASE(PERL_PHASE_CHECK);
1642 call_list(oldscope, PL_checkav);
1650 /* my_exit() was called */
1651 while (PL_scopestack_ix > oldscope)
1654 SET_CURSTASH(PL_defstash);
1655 if (PL_unitcheckav) {
1656 call_list(oldscope, PL_unitcheckav);
1659 PERL_SET_PHASE(PERL_PHASE_CHECK);
1660 call_list(oldscope, PL_checkav);
1665 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1673 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1674 miniperl, and we need to see those flags reflected in the values here. */
1676 /* What this returns is subject to change. Use the public interface in Config.
1679 S_Internals_V(pTHX_ CV *cv)
1682 #ifdef LOCAL_PATCH_COUNT
1683 const int local_patch_count = LOCAL_PATCH_COUNT;
1685 const int local_patch_count = 0;
1687 const int entries = 3 + local_patch_count;
1689 static const char non_bincompat_options[] =
1696 # ifdef NO_HASH_SEED
1699 # ifdef NO_TAINT_SUPPORT
1702 # ifdef PERL_BOOL_AS_CHAR
1703 " PERL_BOOL_AS_CHAR"
1705 # ifdef PERL_COPY_ON_WRITE
1706 " PERL_COPY_ON_WRITE"
1708 # ifdef PERL_DISABLE_PMC
1711 # ifdef PERL_DONT_CREATE_GVSV
1712 " PERL_DONT_CREATE_GVSV"
1714 # ifdef PERL_EXTERNAL_GLOB
1715 " PERL_EXTERNAL_GLOB"
1717 # ifdef PERL_HASH_FUNC_SIPHASH
1718 " PERL_HASH_FUNC_SIPHASH"
1720 # ifdef PERL_HASH_FUNC_SDBM
1721 " PERL_HASH_FUNC_SDBM"
1723 # ifdef PERL_HASH_FUNC_DJB2
1724 " PERL_HASH_FUNC_DJB2"
1726 # ifdef PERL_HASH_FUNC_SUPERFAST
1727 " PERL_HASH_FUNC_SUPERFAST"
1729 # ifdef PERL_HASH_FUNC_MURMUR3
1730 " PERL_HASH_FUNC_MURMUR3"
1732 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1733 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1735 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1736 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1738 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1739 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1741 # ifdef PERL_IS_MINIPERL
1744 # ifdef PERL_MALLOC_WRAP
1747 # ifdef PERL_MEM_LOG
1750 # ifdef PERL_MEM_LOG_NOIMPL
1751 " PERL_MEM_LOG_NOIMPL"
1753 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1754 " PERL_PERTURB_KEYS_DETERMINISTIC"
1756 # ifdef PERL_PERTURB_KEYS_DISABLED
1757 " PERL_PERTURB_KEYS_DISABLED"
1759 # ifdef PERL_PERTURB_KEYS_RANDOM
1760 " PERL_PERTURB_KEYS_RANDOM"
1762 # ifdef PERL_PRESERVE_IVUV
1763 " PERL_PRESERVE_IVUV"
1765 # ifdef PERL_RELOCATABLE_INCPUSH
1766 " PERL_RELOCATABLE_INCPUSH"
1768 # ifdef PERL_USE_DEVEL
1771 # ifdef PERL_USE_SAFE_PUTENV
1772 " PERL_USE_SAFE_PUTENV"
1774 # ifdef UNLINK_ALL_VERSIONS
1775 " UNLINK_ALL_VERSIONS"
1777 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1778 " USE_ATTRIBUTES_FOR_PERLIO"
1780 # ifdef USE_FAST_STDIO
1783 # ifdef USE_HASH_SEED_EXPLICIT
1784 " USE_HASH_SEED_EXPLICIT"
1789 # ifdef USE_LOCALE_CTYPE
1792 # ifdef WIN32_NO_REGISTRY
1795 # ifdef USE_PERL_ATOF
1798 # ifdef USE_SITECUSTOMIZE
1799 " USE_SITECUSTOMIZE"
1802 PERL_UNUSED_ARG(cv);
1803 PERL_UNUSED_VAR(items);
1805 EXTEND(SP, entries);
1807 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1808 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1809 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1811 #ifndef PERL_BUILD_DATE
1814 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1816 # define PERL_BUILD_DATE __DATE__
1821 #ifdef PERL_BUILD_DATE
1822 PUSHs(Perl_newSVpvn_flags(aTHX_
1823 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1826 PUSHs(&PL_sv_undef);
1829 for (i = 1; i <= local_patch_count; i++) {
1830 /* This will be an undef, if PL_localpatches[i] is NULL. */
1831 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1837 #define INCPUSH_UNSHIFT 0x01
1838 #define INCPUSH_ADD_OLD_VERS 0x02
1839 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1840 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1841 #define INCPUSH_NOT_BASEDIR 0x10
1842 #define INCPUSH_CAN_RELOCATE 0x20
1843 #define INCPUSH_ADD_SUB_DIRS \
1844 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1847 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1851 int argc = PL_origargc;
1852 char **argv = PL_origargv;
1853 const char *scriptname = NULL;
1854 bool dosearch = FALSE;
1856 bool doextract = FALSE;
1857 const char *cddir = NULL;
1858 #ifdef USE_SITECUSTOMIZE
1859 bool minus_f = FALSE;
1861 SV *linestr_sv = NULL;
1862 bool add_read_e_script = FALSE;
1863 U32 lex_start_flags = 0;
1865 PERL_SET_PHASE(PERL_PHASE_START);
1871 for (argc--,argv++; argc > 0; argc--,argv++) {
1872 if (argv[0][0] != '-' || !argv[0][1])
1878 #ifndef PERL_STRICT_CR
1902 if ((s = moreswitches(s)))
1907 #if defined(SILENT_NO_TAINT_SUPPORT)
1908 /* silently ignore */
1909 #elif defined(NO_TAINT_SUPPORT)
1910 Perl_croak_nocontext("This perl was compiled without taint support. "
1911 "Cowardly refusing to run with -t or -T flags");
1913 CHECK_MALLOC_TOO_LATE_FOR('t');
1914 if( !TAINTING_get ) {
1915 TAINT_WARN_set(TRUE);
1922 #if defined(SILENT_NO_TAINT_SUPPORT)
1923 /* silently ignore */
1924 #elif defined(NO_TAINT_SUPPORT)
1925 Perl_croak_nocontext("This perl was compiled without taint support. "
1926 "Cowardly refusing to run with -t or -T flags");
1928 CHECK_MALLOC_TOO_LATE_FOR('T');
1930 TAINT_WARN_set(FALSE);
1939 forbid_setid('e', FALSE);
1941 PL_e_script = newSVpvs("");
1942 add_read_e_script = TRUE;
1945 sv_catpv(PL_e_script, s);
1947 sv_catpv(PL_e_script, argv[1]);
1951 Perl_croak(aTHX_ "No code specified for -%c", c);
1952 sv_catpvs(PL_e_script, "\n");
1956 #ifdef USE_SITECUSTOMIZE
1962 case 'I': /* -I handled both here and in moreswitches() */
1963 forbid_setid('I', FALSE);
1964 if (!*++s && (s=argv[1]) != NULL) {
1968 STRLEN len = strlen(s);
1969 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1972 Perl_croak(aTHX_ "No directory specified for -I");
1975 forbid_setid('S', FALSE);
1984 opts_prog = newSVpvs("use Config; Config::_V()");
1988 opts_prog = Perl_newSVpvf(aTHX_
1989 "use Config; Config::config_vars(qw%c%s%c)",
1993 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1994 /* don't look for script or read stdin */
1995 scriptname = BIT_BUCKET;
2007 if (!*++s || isSPACE(*s)) {
2011 /* catch use of gnu style long options.
2012 Both of these exit immediately. */
2013 if (strEQ(s, "version"))
2015 if (strEQ(s, "help"))
2020 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2031 #ifndef SECURE_INTERNAL_GETENV
2034 (s = PerlEnv_getenv("PERL5OPT")))
2036 /* s points to static memory in getenv(), which may be overwritten at
2037 * any time; use a mortal copy instead */
2038 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2042 if (*s == '-' && *(s+1) == 'T') {
2043 #if defined(SILENT_NO_TAINT_SUPPORT)
2044 /* silently ignore */
2045 #elif defined(NO_TAINT_SUPPORT)
2046 Perl_croak_nocontext("This perl was compiled without taint support. "
2047 "Cowardly refusing to run with -t or -T flags");
2049 CHECK_MALLOC_TOO_LATE_FOR('T');
2051 TAINT_WARN_set(FALSE);
2055 char *popt_copy = NULL;
2068 if (!strchr("CDIMUdmtwW", *s))
2069 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2073 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2074 s = popt_copy + (s - d);
2082 #if defined(SILENT_NO_TAINT_SUPPORT)
2083 /* silently ignore */
2084 #elif defined(NO_TAINT_SUPPORT)
2085 Perl_croak_nocontext("This perl was compiled without taint support. "
2086 "Cowardly refusing to run with -t or -T flags");
2088 if( !TAINTING_get) {
2089 TAINT_WARN_set(TRUE);
2101 /* Set $^X early so that it can be used for relocatable paths in @INC */
2102 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2103 assert (!TAINT_get);
2108 #if defined(USE_SITECUSTOMIZE)
2110 /* The games with local $! are to avoid setting errno if there is no
2111 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2112 ie a q() operator with a NUL byte as a the delimiter. This avoids
2113 problems with pathnames containing (say) ' */
2114 # ifdef PERL_IS_MINIPERL
2115 AV *const inc = GvAV(PL_incgv);
2116 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2119 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2120 it should be reported immediately as a build failure. */
2121 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2123 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2124 "do {local $!; -f $f }"
2125 " and do $f || die $@ || qq '$f: $!' }",
2126 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2129 /* SITELIB_EXP is a function call on Win32. */
2130 const char *const raw_sitelib = SITELIB_EXP;
2132 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2133 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2134 INCPUSH_CAN_RELOCATE);
2135 const char *const sitelib = SvPVX(sitelib_sv);
2136 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2138 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2139 0, SVfARG(sitelib), 0,
2140 0, SVfARG(sitelib), 0));
2141 assert (SvREFCNT(sitelib_sv) == 1);
2142 SvREFCNT_dec(sitelib_sv);
2149 scriptname = argv[0];
2152 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2154 else if (scriptname == NULL) {
2156 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2162 assert (!TAINT_get);
2166 bool suidscript = FALSE;
2168 rsfp = open_script(scriptname, dosearch, &suidscript);
2170 rsfp = PerlIO_stdin();
2171 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2174 validate_suid(rsfp);
2177 # if defined(SIGCHLD) || defined(SIGCLD)
2180 # define SIGCHLD SIGCLD
2182 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2183 if (sigstate == (Sighandler_t) SIG_IGN) {
2184 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2185 "Can't ignore signal CHLD, forcing to default");
2186 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2194 /* This will croak if suidscript is true, as -x cannot be used with
2196 forbid_setid('x', suidscript);
2197 /* Hence you can't get here if suidscript is true */
2199 linestr_sv = newSV_type(SVt_PV);
2200 lex_start_flags |= LEX_START_COPIED;
2201 find_beginning(linestr_sv, rsfp);
2202 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2203 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2207 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2208 CvUNIQUE_on(PL_compcv);
2210 CvPADLIST_set(PL_compcv, pad_new(0));
2212 PL_isarev = newHV();
2215 boot_core_UNIVERSAL();
2217 newXS("Internals::V", S_Internals_V, __FILE__);
2220 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2222 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2228 # ifdef HAS_SOCKS5_INIT
2229 socks5_init(argv[0]);
2235 init_predump_symbols();
2236 /* init_postdump_symbols not currently designed to be called */
2237 /* more than once (ENV isn't cleared first, for example) */
2238 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2240 init_postdump_symbols(argc,argv,env);
2242 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2243 * or explicitly in some platforms.
2244 * locale.c:Perl_init_i18nl10n() if the environment
2245 * look like the user wants to use UTF-8. */
2246 #if defined(__SYMBIAN32__)
2247 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2249 # ifndef PERL_IS_MINIPERL
2251 /* Requires init_predump_symbols(). */
2252 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2257 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2258 * and the default open disciplines. */
2259 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2260 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2262 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2263 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2264 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2266 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2267 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2268 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2270 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2271 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2272 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2274 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2275 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2278 sv_setpvs(sv, ":utf8\0:utf8");
2280 sv_setpvs(sv, ":utf8\0");
2283 sv_setpvs(sv, "\0:utf8");
2292 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2293 if (strEQ(s, "unsafe"))
2294 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2295 else if (strEQ(s, "safe"))
2296 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2298 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2303 lex_start(linestr_sv, rsfp, lex_start_flags);
2304 SvREFCNT_dec(linestr_sv);
2306 PL_subname = newSVpvs("main");
2308 if (add_read_e_script)
2309 filter_add(read_e_script, NULL);
2311 /* now parse the script */
2313 SETERRNO(0,SS_NORMAL);
2314 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2316 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2318 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2322 CopLINE_set(PL_curcop, 0);
2323 SET_CURSTASH(PL_defstash);
2325 SvREFCNT_dec(PL_e_script);
2333 SAVECOPFILE(PL_curcop);
2334 SAVECOPLINE(PL_curcop);
2335 gv_check(PL_defstash);
2345 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2346 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2347 dump_mstats("after compilation:");
2352 PL_restartjmpenv = NULL;
2358 =for apidoc perl_run
2360 Tells a Perl interpreter to run. See L<perlembed>.
2372 PERL_ARGS_ASSERT_PERL_RUN;
2373 #ifndef MULTIPLICITY
2374 PERL_UNUSED_ARG(my_perl);
2377 oldscope = PL_scopestack_ix;
2385 cxstack_ix = -1; /* start context stack again */
2387 case 0: /* normal completion */
2391 case 2: /* my_exit() */
2392 while (PL_scopestack_ix > oldscope)
2395 SET_CURSTASH(PL_defstash);
2396 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2397 PL_endav && !PL_minus_c) {
2398 PERL_SET_PHASE(PERL_PHASE_END);
2399 call_list(oldscope, PL_endav);
2402 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2403 dump_mstats("after execution: ");
2409 POPSTACK_TO(PL_mainstack);
2412 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2423 S_run_body(pTHX_ I32 oldscope)
2425 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2426 PL_sawampersand ? "Enabling" : "Omitting",
2427 (unsigned int)(PL_sawampersand)));
2429 if (!PL_restartop) {
2431 if (DEBUG_x_TEST || DEBUG_B_TEST)
2432 dump_all_perl(!DEBUG_B_TEST);
2434 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2438 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2441 if (PERLDB_SINGLE && PL_DBsingle)
2444 PERL_SET_PHASE(PERL_PHASE_INIT);
2445 call_list(oldscope, PL_initav);
2447 #ifdef PERL_DEBUG_READONLY_OPS
2448 if (PL_main_root && PL_main_root->op_slabbed)
2449 Slab_to_ro(OpSLAB(PL_main_root));
2455 PERL_SET_PHASE(PERL_PHASE_RUN);
2458 PL_restartjmpenv = NULL;
2459 PL_op = PL_restartop;
2463 else if (PL_main_start) {
2464 CvDEPTH(PL_main_cv) = 1;
2465 PL_op = PL_main_start;
2469 NOT_REACHED; /* NOTREACHED */
2473 =head1 SV Manipulation Functions
2475 =for apidoc p||get_sv
2477 Returns the SV of the specified Perl scalar. C<flags> are passed to
2478 C<gv_fetchpv>. If C<GV_ADD> is set and the
2479 Perl variable does not exist then it will be created. If C<flags> is zero
2480 and the variable does not exist then NULL is returned.
2486 Perl_get_sv(pTHX_ const char *name, I32 flags)
2490 PERL_ARGS_ASSERT_GET_SV;
2492 gv = gv_fetchpv(name, flags, SVt_PV);
2499 =head1 Array Manipulation Functions
2501 =for apidoc p||get_av
2503 Returns the AV of the specified Perl global or package array with the given
2504 name (so it won't work on lexical variables). C<flags> are passed
2505 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2506 Perl variable does not exist then it will be created. If C<flags> is zero
2507 and the variable does not exist then NULL is returned.
2509 Perl equivalent: C<@{"$name"}>.
2515 Perl_get_av(pTHX_ const char *name, I32 flags)
2517 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2519 PERL_ARGS_ASSERT_GET_AV;
2529 =head1 Hash Manipulation Functions
2531 =for apidoc p||get_hv
2533 Returns the HV of the specified Perl hash. C<flags> are passed to
2534 C<gv_fetchpv>. If C<GV_ADD> is set and the
2535 Perl variable does not exist then it will be created. If C<flags> is zero
2536 and the variable does not exist then C<NULL> is returned.
2542 Perl_get_hv(pTHX_ const char *name, I32 flags)
2544 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2546 PERL_ARGS_ASSERT_GET_HV;
2556 =head1 CV Manipulation Functions
2558 =for apidoc p||get_cvn_flags
2560 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2561 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2562 exist then it will be declared (which has the same effect as saying
2563 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2564 then NULL is returned.
2566 =for apidoc p||get_cv
2568 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2574 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2576 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2578 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2580 /* XXX this is probably not what they think they're getting.
2581 * It has the same effect as "sub name;", i.e. just a forward
2583 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2584 return newSTUB(gv,0);
2591 /* Nothing in core calls this now, but we can't replace it with a macro and
2592 move it to mathoms.c as a macro would evaluate name twice. */
2594 Perl_get_cv(pTHX_ const char *name, I32 flags)
2596 PERL_ARGS_ASSERT_GET_CV;
2598 return get_cvn_flags(name, strlen(name), flags);
2601 /* Be sure to refetch the stack pointer after calling these routines. */
2605 =head1 Callback Functions
2607 =for apidoc p||call_argv
2609 Performs a callback to the specified named and package-scoped Perl subroutine
2610 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2613 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2619 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2621 /* See G_* flags in cop.h */
2622 /* null terminated arg list */
2626 PERL_ARGS_ASSERT_CALL_ARGV;
2630 mXPUSHs(newSVpv(*argv,0));
2634 return call_pv(sub_name, flags);
2638 =for apidoc p||call_pv
2640 Performs a callback to the specified Perl sub. See L<perlcall>.
2646 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2647 /* name of the subroutine */
2648 /* See G_* flags in cop.h */
2650 PERL_ARGS_ASSERT_CALL_PV;
2652 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2656 =for apidoc p||call_method
2658 Performs a callback to the specified Perl method. The blessed object must
2659 be on the stack. See L<perlcall>.
2665 Perl_call_method(pTHX_ const char *methname, I32 flags)
2666 /* name of the subroutine */
2667 /* See G_* flags in cop.h */
2671 PERL_ARGS_ASSERT_CALL_METHOD;
2673 len = strlen(methname);
2674 sv = flags & G_METHOD_NAMED
2675 ? sv_2mortal(newSVpvn_share(methname, len,0))
2676 : newSVpvn_flags(methname, len, SVs_TEMP);
2678 return call_sv(sv, flags | G_METHOD);
2681 /* May be called with any of a CV, a GV, or an SV containing the name. */
2683 =for apidoc p||call_sv
2685 Performs a callback to the Perl sub specified by the SV.
2687 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2688 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2689 or C<SvPV(sv)> will be used as the name of the sub to call.
2691 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2692 C<SvPV(sv)> will be used as the name of the method to call.
2694 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2695 the name of the method to call.
2697 Some other values are treated specially for internal use and should
2706 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2707 /* See G_* flags in cop.h */
2710 LOGOP myop; /* fake syntax tree node */
2714 bool oldcatch = CATCH_GET;
2716 OP* const oldop = PL_op;
2719 PERL_ARGS_ASSERT_CALL_SV;
2721 if (flags & G_DISCARD) {
2725 if (!(flags & G_WANT)) {
2726 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2731 Zero(&myop, 1, LOGOP);
2732 if (!(flags & G_NOARGS))
2733 myop.op_flags |= OPf_STACKED;
2734 myop.op_flags |= OP_GIMME_REVERSE(flags);
2738 if (!(flags & G_METHOD_NAMED)) {
2746 if (PERLDB_SUB && PL_curstash != PL_debstash
2747 /* Handle first BEGIN of -d. */
2748 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2749 /* Try harder, since this may have been a sighandler, thus
2750 * curstash may be meaningless. */
2751 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2752 && !(flags & G_NODEBUG))
2753 myop.op_private |= OPpENTERSUB_DB;
2755 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2756 Zero(&method_op, 1, METHOP);
2757 method_op.op_next = (OP*)&myop;
2758 PL_op = (OP*)&method_op;
2759 if ( flags & G_METHOD_NAMED ) {
2760 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2761 method_op.op_type = OP_METHOD_NAMED;
2762 method_op.op_u.op_meth_sv = sv;
2764 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2765 method_op.op_type = OP_METHOD;
2767 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2768 myop.op_type = OP_ENTERSUB;
2771 if (!(flags & G_EVAL)) {
2773 CALL_BODY_SUB((OP*)&myop);
2774 retval = PL_stack_sp - (PL_stack_base + oldmark);
2775 CATCH_SET(oldcatch);
2779 myop.op_other = (OP*)&myop;
2781 old_cxix = cxstack_ix;
2782 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2790 CALL_BODY_SUB((OP*)&myop);
2791 retval = PL_stack_sp - (PL_stack_base + oldmark);
2792 if (!(flags & G_KEEPERR)) {
2800 /* my_exit() was called */
2801 SET_CURSTASH(PL_defstash);
2805 NOT_REACHED; /* NOTREACHED */
2808 PL_restartjmpenv = NULL;
2809 PL_op = PL_restartop;
2813 PL_stack_sp = PL_stack_base + oldmark;
2814 if ((flags & G_WANT) == G_ARRAY)
2818 *++PL_stack_sp = &PL_sv_undef;
2823 /* if we croaked, depending on how we croaked the eval scope
2824 * may or may not have already been popped */
2825 if (cxstack_ix > old_cxix) {
2826 assert(cxstack_ix == old_cxix + 1);
2827 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2828 delete_eval_scope();
2833 if (flags & G_DISCARD) {
2834 PL_stack_sp = PL_stack_base + oldmark;
2843 /* Eval a string. The G_EVAL flag is always assumed. */
2846 =for apidoc p||eval_sv
2848 Tells Perl to C<eval> the string in the SV. It supports the same flags
2849 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2855 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2857 /* See G_* flags in cop.h */
2860 UNOP myop; /* fake syntax tree node */
2864 OP* const oldop = PL_op;
2867 PERL_ARGS_ASSERT_EVAL_SV;
2869 if (flags & G_DISCARD) {
2876 Zero(&myop, 1, UNOP);
2879 oldmark = SP - PL_stack_base;
2885 if (!(flags & G_NOARGS))
2886 myop.op_flags = OPf_STACKED;
2887 myop.op_type = OP_ENTEREVAL;
2888 myop.op_flags |= OP_GIMME_REVERSE(flags);
2889 if (flags & G_KEEPERR)
2890 myop.op_flags |= OPf_SPECIAL;
2892 if (flags & G_RE_REPARSING)
2893 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2895 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2896 * before a cx_pusheval(), which corrupts the stack after a croak */
2897 TAINT_PROPER("eval_sv()");
2903 if (PL_op == (OP*)(&myop)) {
2904 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2906 goto fail; /* failed in compilation */
2909 retval = PL_stack_sp - (PL_stack_base + oldmark);
2910 if (!(flags & G_KEEPERR)) {
2918 /* my_exit() was called */
2919 SET_CURSTASH(PL_defstash);
2923 NOT_REACHED; /* NOTREACHED */
2926 PL_restartjmpenv = NULL;
2927 PL_op = PL_restartop;
2932 PL_stack_sp = PL_stack_base + oldmark;
2933 if ((flags & G_WANT) == G_ARRAY)
2937 *++PL_stack_sp = &PL_sv_undef;
2943 if (flags & G_DISCARD) {
2944 PL_stack_sp = PL_stack_base + oldmark;
2954 =for apidoc p||eval_pv
2956 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2962 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2964 SV* sv = newSVpv(p, 0);
2966 PERL_ARGS_ASSERT_EVAL_PV;
2968 eval_sv(sv, G_SCALAR);
2977 /* just check empty string or undef? */
2978 if (croak_on_error) {
2979 SV * const errsv = ERRSV;
2980 if(SvTRUE_NN(errsv))
2981 /* replace with croak_sv? */
2982 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2988 /* Require a module. */
2991 =head1 Embedding Functions
2993 =for apidoc p||require_pv
2995 Tells Perl to C<require> the file named by the string argument. It is
2996 analogous to the Perl code C<eval "require '$file'">. It's even
2997 implemented that way; consider using load_module instead.
3002 Perl_require_pv(pTHX_ const char *pv)
3007 PERL_ARGS_ASSERT_REQUIRE_PV;
3009 PUSHSTACKi(PERLSI_REQUIRE);
3010 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3011 eval_sv(sv_2mortal(sv), G_DISCARD);
3016 S_usage(pTHX) /* XXX move this out into a module ? */
3018 /* This message really ought to be max 23 lines.
3019 * Removed -h because the user already knows that option. Others? */
3021 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3022 minimum of 509 character string literals. */
3023 static const char * const usage_msg[] = {
3024 " -0[octal] specify record separator (\\0, if no argument)\n"
3025 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3026 " -C[number/list] enables the listed Unicode features\n"
3027 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3028 " -d[:debugger] run program under debugger\n"
3029 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3030 " -e program one line of program (several -e's allowed, omit programfile)\n"
3031 " -E program like -e, but enables all optional features\n"
3032 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3033 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3034 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3035 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3036 " -l[octal] enable line ending processing, specifies line terminator\n"
3037 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3038 " -n assume \"while (<>) { ... }\" loop around program\n"
3039 " -p assume loop like -n but print line also, like sed\n"
3040 " -s enable rudimentary parsing for switches after programfile\n"
3041 " -S look for programfile using PATH environment variable\n",
3042 " -t enable tainting warnings\n"
3043 " -T enable tainting checks\n"
3044 " -u dump core after parsing program\n"
3045 " -U allow unsafe operations\n"
3046 " -v print version, patchlevel and license\n"
3047 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3048 " -w enable many useful warnings\n"
3049 " -W enable all warnings\n"
3050 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3051 " -X disable all warnings\n"
3053 "Run 'perldoc perl' for more help with Perl.\n\n",
3056 const char * const *p = usage_msg;
3057 PerlIO *out = PerlIO_stdout();
3060 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3063 PerlIO_puts(out, *p++);
3067 /* convert a string of -D options (or digits) into an int.
3068 * sets *s to point to the char after the options */
3072 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3074 static const char * const usage_msgd[] = {
3075 " Debugging flag values: (see also -d)\n"
3076 " p Tokenizing and parsing (with v, displays parse stack)\n"
3077 " s Stack snapshots (with v, displays all stacks)\n"
3078 " l Context (loop) stack processing\n"
3079 " t Trace execution\n"
3080 " o Method and overloading resolution\n",
3081 " c String/numeric conversions\n"
3082 " P Print profiling info, source file input state\n"
3083 " m Memory and SV allocation\n"
3084 " f Format processing\n"
3085 " r Regular expression parsing and execution\n"
3086 " x Syntax tree dump\n",
3087 " u Tainting checks\n"
3088 " H Hash dump -- usurps values()\n"
3089 " X Scratchpad allocation\n"
3091 " S Op slab allocation\n"
3093 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3094 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3095 " v Verbose: use in conjunction with other flags\n"
3096 " C Copy On Write\n"
3097 " A Consistency checks on internal structures\n"
3098 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3099 " M trace smart match resolution\n"
3100 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3101 " L trace some locale setting information--for Perl core development\n",
3106 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3109 /* if adding extra options, remember to update DEBUG_MASK */
3110 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3112 for (; isWORDCHAR(**s); (*s)++) {
3113 const char * const d = strchr(debopts,**s);
3115 uv |= 1 << (d - debopts);
3116 else if (ckWARN_d(WARN_DEBUGGING))
3117 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3118 "invalid option -D%c, use -D'' to see choices\n", **s);
3121 else if (isDIGIT(**s)) {
3123 if (grok_atoUV(*s, &uv, &e))
3125 for (; isWORDCHAR(**s); (*s)++) ;
3127 else if (givehelp) {
3128 const char *const *p = usage_msgd;
3129 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3131 return (int)uv; /* ignore any UV->int conversion loss */
3135 /* This routine handles any switches that can be given during run */
3138 Perl_moreswitches(pTHX_ const char *s)
3142 const char option = *s; /* used to remember option in -m/-M code */
3144 PERL_ARGS_ASSERT_MORESWITCHES;
3152 SvREFCNT_dec(PL_rs);
3153 if (s[1] == 'x' && s[2]) {
3154 const char *e = s+=2;
3160 flags = PERL_SCAN_SILENT_ILLDIGIT;
3161 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3162 if (s + numlen < e) {
3163 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3167 PL_rs = newSVpvs("");
3168 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3169 tmps = (U8*)SvPVX(PL_rs);
3170 uvchr_to_utf8(tmps, rschar);
3171 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3176 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3177 if (rschar & ~((U8)~0))
3178 PL_rs = &PL_sv_undef;
3179 else if (!rschar && numlen >= 2)
3180 PL_rs = newSVpvs("");
3182 char ch = (char)rschar;
3183 PL_rs = newSVpvn(&ch, 1);
3186 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3191 PL_unicode = parse_unicode_opts( (const char **)&s );
3192 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3200 while (*s && !isSPACE(*s)) ++s;
3201 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3213 forbid_setid('d', FALSE);
3216 /* -dt indicates to the debugger that threads will be used */
3217 if (*s == 't' && !isWORDCHAR(s[1])) {
3219 my_setenv("PERL5DB_THREADED", "1");
3222 /* The following permits -d:Mod to accepts arguments following an =
3223 in the fashion that -MSome::Mod does. */
3224 if (*s == ':' || *s == '=') {
3231 sv = newSVpvs("no Devel::");
3233 sv = newSVpvs("use Devel::");
3237 end = s + strlen(s);
3239 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3240 while(isWORDCHAR(*s) || *s==':') ++s;
3242 sv_catpvn(sv, start, end - start);
3244 sv_catpvn(sv, start, s-start);
3245 /* Don't use NUL as q// delimiter here, this string goes in the
3247 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3250 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3254 PL_perldb = PERLDB_ALL;
3261 forbid_setid('D', FALSE);
3263 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3264 #else /* !DEBUGGING */
3265 if (ckWARN_d(WARN_DEBUGGING))
3266 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3267 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3268 for (s++; isWORDCHAR(*s); s++) ;
3271 NOT_REACHED; /* NOTREACHED */
3275 NOT_REACHED; /* NOTREACHED */
3278 Safefree(PL_inplace);
3279 #if defined(__CYGWIN__) /* do backup extension automagically */
3280 if (*(s+1) == '\0') {
3281 PL_inplace = savepvs(".bak");
3284 #endif /* __CYGWIN__ */
3286 const char * const start = ++s;
3287 while (*s && !isSPACE(*s))
3290 PL_inplace = savepvn(start, s - start);
3294 if (*s == '-') /* Additional switches on #! line. */
3298 case 'I': /* -I handled both here and in parse_body() */
3299 forbid_setid('I', FALSE);
3301 while (*s && isSPACE(*s))
3306 /* ignore trailing spaces (possibly followed by other switches) */
3308 for (e = p; *e && !isSPACE(*e); e++) ;
3312 } while (*p && *p != '-');
3314 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3320 Perl_croak(aTHX_ "No directory specified for -I");
3326 SvREFCNT_dec(PL_ors_sv);
3332 PL_ors_sv = newSVpvs("\n");
3333 numlen = 3 + (*s == '0');
3334 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3338 if (RsPARA(PL_rs)) {
3339 PL_ors_sv = newSVpvs("\n\n");
3342 PL_ors_sv = newSVsv(PL_rs);
3347 forbid_setid('M', FALSE); /* XXX ? */
3350 forbid_setid('m', FALSE); /* XXX ? */
3355 const char *use = "use ";
3357 /* -M-foo == 'no foo' */
3358 /* Leading space on " no " is deliberate, to make both
3359 possibilities the same length. */
3360 if (*s == '-') { use = " no "; ++s; }
3361 sv = newSVpvn(use,4);
3363 /* We allow -M'Module qw(Foo Bar)' */
3364 while(isWORDCHAR(*s) || *s==':') {
3373 Perl_croak(aTHX_ "Module name required with -%c option",
3376 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3377 "contains single ':'",
3378 (int)(s - start), start, option);
3379 end = s + strlen(s);
3381 sv_catpvn(sv, start, end - start);
3382 if (option == 'm') {
3384 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3385 sv_catpvs( sv, " ()");
3388 sv_catpvn(sv, start, s-start);
3389 /* Use NUL as q''-delimiter. */
3390 sv_catpvs(sv, " split(/,/,q\0");
3392 sv_catpvn(sv, s, end - s);
3393 sv_catpvs(sv, "\0)");
3396 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3399 Perl_croak(aTHX_ "Missing argument to -%c", option);
3410 forbid_setid('s', FALSE);
3411 PL_doswitches = TRUE;
3416 #if defined(SILENT_NO_TAINT_SUPPORT)
3417 /* silently ignore */
3418 #elif defined(NO_TAINT_SUPPORT)
3419 Perl_croak_nocontext("This perl was compiled without taint support. "
3420 "Cowardly refusing to run with -t or -T flags");
3428 PL_do_undump = TRUE;
3438 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3439 PL_dowarn |= G_WARN_ON;
3444 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3445 if (!specialWARN(PL_compiling.cop_warnings))
3446 PerlMemShared_free(PL_compiling.cop_warnings);
3447 PL_compiling.cop_warnings = pWARN_ALL ;
3451 PL_dowarn = G_WARN_ALL_OFF;
3452 if (!specialWARN(PL_compiling.cop_warnings))
3453 PerlMemShared_free(PL_compiling.cop_warnings);
3454 PL_compiling.cop_warnings = pWARN_NONE ;
3461 if (s[0] == '-') /* Additional switches on #! line. */
3466 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3472 #ifdef ALTERNATE_SHEBANG
3473 case 'S': /* OS/2 needs -S on "extproc" line. */
3476 case 'e': case 'f': case 'x': case 'E':
3477 #ifndef ALTERNATE_SHEBANG
3481 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3484 "Unrecognized switch: -%.1s (-h will show valid options)",s
3494 PerlIO * PIO_stdout;
3496 const char * const level_str = "v" PERL_VERSION_STRING;
3497 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3498 #ifdef PERL_PATCHNUM
3500 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3501 static const char num [] = PERL_PATCHNUM "*";
3503 static const char num [] = PERL_PATCHNUM;
3506 const STRLEN num_len = sizeof(num)-1;
3507 /* A very advanced compiler would fold away the strnEQ
3508 and this whole conditional, but most (all?) won't do it.
3509 SV level could also be replaced by with preprocessor
3512 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3513 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3514 of the interp so it might contain format characters
3516 level = newSVpvn(num, num_len);
3518 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3522 SV* level = newSVpvn(level_str, level_len);
3523 #endif /* #ifdef PERL_PATCHNUM */
3524 PIO_stdout = PerlIO_stdout();
3525 PerlIO_printf(PIO_stdout,
3526 "\nThis is perl " STRINGIFY(PERL_REVISION)
3527 ", version " STRINGIFY(PERL_VERSION)
3528 ", subversion " STRINGIFY(PERL_SUBVERSION)
3529 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3531 SvREFCNT_dec_NN(level);
3533 #if defined(LOCAL_PATCH_COUNT)
3534 if (LOCAL_PATCH_COUNT > 0)
3535 PerlIO_printf(PIO_stdout,
3536 "\n(with %d registered patch%s, "
3537 "see perl -V for more detail)",
3539 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3542 PerlIO_printf(PIO_stdout,
3543 "\n\nCopyright 1987-2016, Larry Wall\n");
3545 PerlIO_printf(PIO_stdout,
3546 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3549 PerlIO_printf(PIO_stdout,
3550 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3551 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3554 PerlIO_printf(PIO_stdout,
3555 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3556 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3559 PerlIO_printf(PIO_stdout,
3560 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3563 PerlIO_printf(PIO_stdout,
3564 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3567 PerlIO_printf(PIO_stdout,
3568 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3571 PerlIO_printf(PIO_stdout,
3572 "WINCE port by Rainer Keuchel, 2001-2002\n"
3573 "Built on " __DATE__ " " __TIME__ "\n\n");
3576 #ifdef __SYMBIAN32__
3577 PerlIO_printf(PIO_stdout,
3578 "Symbian port by Nokia, 2004-2005\n");
3580 #ifdef BINARY_BUILD_NOTICE
3581 BINARY_BUILD_NOTICE;
3583 PerlIO_printf(PIO_stdout,
3585 Perl may be copied only under the terms of either the Artistic License or the\n\
3586 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3587 Complete documentation for Perl, including FAQ lists, should be found on\n\
3588 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3589 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3593 /* compliments of Tom Christiansen */
3595 /* unexec() can be found in the Gnu emacs distribution */
3596 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3599 #include <lib$routines.h>
3603 Perl_my_unexec(pTHX)
3606 SV * prog = newSVpv(BIN_EXP, 0);
3607 SV * file = newSVpv(PL_origfilename, 0);
3611 sv_catpvs(prog, "/perl");
3612 sv_catpvs(file, ".perldump");
3614 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3615 /* unexec prints msg to stderr in case of failure */
3616 PerlProc_exit(status);
3618 PERL_UNUSED_CONTEXT;
3620 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3621 # elif defined(WIN32) || defined(__CYGWIN__)
3622 Perl_croak_nocontext("dump is not supported");
3624 ABORT(); /* for use with undump */
3629 /* initialize curinterp */
3634 # define PERLVAR(prefix,var,type)
3635 # define PERLVARA(prefix,var,n,type)
3636 # if defined(PERL_IMPLICIT_CONTEXT)
3637 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3638 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3640 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3641 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3643 # include "intrpvar.h"
3649 # define PERLVAR(prefix,var,type)
3650 # define PERLVARA(prefix,var,n,type)
3651 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3652 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3653 # include "intrpvar.h"
3663 S_init_main_stash(pTHX)
3667 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3668 /* We know that the string "main" will be in the global shared string
3669 table, so it's a small saving to use it rather than allocate another
3671 PL_curstname = newSVpvs_share("main");
3672 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3673 /* If we hadn't caused another reference to "main" to be in the shared
3674 string table above, then it would be worth reordering these two,
3675 because otherwise all we do is delete "main" from it as a consequence
3676 of the SvREFCNT_dec, only to add it again with hv_name_set */
3677 SvREFCNT_dec(GvHV(gv));
3678 hv_name_set(PL_defstash, "main", 4, 0);
3679 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3681 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3683 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3684 GvMULTI_on(PL_incgv);
3685 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3686 SvREFCNT_inc_simple_void(PL_hintgv);
3687 GvMULTI_on(PL_hintgv);
3688 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3689 SvREFCNT_inc_simple_void(PL_defgv);
3690 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3691 SvREFCNT_inc_simple_void(PL_errgv);
3692 GvMULTI_on(PL_errgv);
3693 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3694 SvREFCNT_inc_simple_void(PL_replgv);
3695 GvMULTI_on(PL_replgv);
3696 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3697 #ifdef PERL_DONT_CREATE_GVSV
3698 (void)gv_SVadd(PL_errgv);
3700 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3702 SET_CURSTASH(PL_defstash);
3703 CopSTASH_set(&PL_compiling, PL_defstash);
3704 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3705 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3707 /* We must init $/ before switches are processed. */
3708 sv_setpvs(get_sv("/", GV_ADD), "\n");
3712 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3715 PerlIO *rsfp = NULL;
3719 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3722 PL_origfilename = savepvs("-e");
3727 /* if find_script() returns, it returns a malloc()-ed value */
3728 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3730 if (strnEQ(scriptname, "/dev/fd/", 8)
3731 && isDIGIT(scriptname[8])
3732 && grok_atoUV(scriptname + 8, &uv, &s)
3733 && uv <= PERL_INT_MAX
3738 * Tell apart "normal" usage of fdscript, e.g.
3739 * with bash on FreeBSD:
3740 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3741 * from usage in suidperl.
3742 * Does any "normal" usage leave garbage after the number???
3743 * Is it a mistake to use a similar /dev/fd/ construct for
3748 * Be supersafe and do some sanity-checks.
3749 * Still, can we be sure we got the right thing?
3752 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3755 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3757 scriptname = savepv(s + 1);
3758 Safefree(PL_origfilename);
3759 PL_origfilename = (char *)scriptname;
3764 CopFILE_free(PL_curcop);
3765 CopFILE_set(PL_curcop, PL_origfilename);
3766 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3767 scriptname = (char *)"";
3768 if (fdscript >= 0) {
3769 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3771 else if (!*scriptname) {
3772 forbid_setid(0, *suidscript);
3776 #ifdef FAKE_BIT_BUCKET
3777 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3778 * is called) and still have the "-e" work. (Believe it or not,
3779 * a /dev/null is required for the "-e" to work because source
3780 * filter magic is used to implement it. ) This is *not* a general
3781 * replacement for a /dev/null. What we do here is create a temp
3782 * file (an empty file), open up that as the script, and then
3783 * immediately close and unlink it. Close enough for jazz. */
3784 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3785 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3786 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3787 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3788 FAKE_BIT_BUCKET_TEMPLATE
3790 const char * const err = "Failed to create a fake bit bucket";
3791 if (strEQ(scriptname, BIT_BUCKET)) {
3792 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3793 int old_umask = umask(0177);
3794 int tmpfd = mkstemp(tmpname);
3797 scriptname = tmpname;
3800 Perl_croak(aTHX_ err);
3803 scriptname = mktemp(tmpname);
3805 Perl_croak(aTHX_ err);
3810 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3811 #ifdef FAKE_BIT_BUCKET
3812 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3813 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3814 && strlen(scriptname) == sizeof(tmpname) - 1) {
3817 scriptname = BIT_BUCKET;
3821 /* PSz 16 Sep 03 Keep neat error message */
3823 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3825 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3826 CopFILE(PL_curcop), Strerror(errno));
3828 fd = PerlIO_fileno(rsfp);
3829 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3831 /* ensure close-on-exec */
3832 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3834 CopFILE(PL_curcop), Strerror(errno));
3840 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3841 && S_ISDIR(tmpstatbuf.st_mode)))
3842 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3850 * I_SYSSTATVFS HAS_FSTATVFS
3852 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3853 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3854 * here so that metaconfig picks them up. */
3857 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3858 /* Don't even need this function. */
3861 S_validate_suid(pTHX_ PerlIO *rsfp)
3863 const Uid_t my_uid = PerlProc_getuid();
3864 const Uid_t my_euid = PerlProc_geteuid();
3865 const Gid_t my_gid = PerlProc_getgid();
3866 const Gid_t my_egid = PerlProc_getegid();
3868 PERL_ARGS_ASSERT_VALIDATE_SUID;
3870 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3872 int fd = PerlIO_fileno(rsfp);
3874 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3875 Perl_croak_nocontext( "Illegal suidscript");
3877 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3879 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3882 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3883 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3884 /* not set-id, must be wrapped */
3887 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3890 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3895 PERL_ARGS_ASSERT_FIND_BEGINNING;
3897 /* skip forward in input to the real script? */
3900 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3901 Perl_croak(aTHX_ "No Perl script found in input\n");
3903 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3904 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3905 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3907 while (*s == ' ' || *s == '\t') s++;
3909 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3910 || s2[-1] == '_') s2--;
3911 if (strnEQ(s2-4,"perl",4))
3912 while ((s = moreswitches(s)))
3921 /* no need to do anything here any more if we don't
3923 #ifndef NO_TAINT_SUPPORT
3924 const Uid_t my_uid = PerlProc_getuid();
3925 const Uid_t my_euid = PerlProc_geteuid();
3926 const Gid_t my_gid = PerlProc_getgid();
3927 const Gid_t my_egid = PerlProc_getegid();
3929 PERL_UNUSED_CONTEXT;
3931 /* Should not happen: */
3932 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3933 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3937 * Should go by suidscript, not uid!=euid: why disallow
3938 * system("ls") in scripts run from setuid things?
3939 * Or, is this run before we check arguments and set suidscript?
3940 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3941 * (We never have suidscript, can we be sure to have fdscript?)
3942 * Or must then go by UID checks? See comments in forbid_setid also.
3946 /* This is used very early in the lifetime of the program,
3947 * before even the options are parsed, so PL_tainting has
3948 * not been initialized properly. */
3950 Perl_doing_taint(int argc, char *argv[], char *envp[])
3952 #ifndef PERL_IMPLICIT_SYS
3953 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3954 * before we have an interpreter-- and the whole point of this
3955 * function is to be called at such an early stage. If you are on
3956 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3957 * "tainted because running with altered effective ids', you'll
3958 * have to add your own checks somewhere in here. The two most
3959 * known samples of 'implicitness' are Win32 and NetWare, neither
3960 * of which has much of concept of 'uids'. */
3961 Uid_t uid = PerlProc_getuid();
3962 Uid_t euid = PerlProc_geteuid();
3963 Gid_t gid = PerlProc_getgid();
3964 Gid_t egid = PerlProc_getegid();
3971 if (uid && (euid != uid || egid != gid))
3973 #endif /* !PERL_IMPLICIT_SYS */
3974 /* This is a really primitive check; environment gets ignored only
3975 * if -T are the first chars together; otherwise one gets
3976 * "Too late" message. */
3977 if ( argc > 1 && argv[1][0] == '-'
3978 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3983 /* Passing the flag as a single char rather than a string is a slight space
3984 optimisation. The only message that isn't /^-.$/ is
3985 "program input from stdin", which is substituted in place of '\0', which
3986 could never be a command line flag. */
3988 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3990 char string[3] = "-x";
3991 const char *message = "program input from stdin";
3993 PERL_UNUSED_CONTEXT;
3999 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4000 if (PerlProc_getuid() != PerlProc_geteuid())
4001 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4002 if (PerlProc_getgid() != PerlProc_getegid())
4003 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4004 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4006 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4010 Perl_init_dbargs(pTHX)
4012 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4017 /* Someone has already created it.
4018 It might have entries, and if we just turn off AvREAL(), they will
4019 "leak" until global destruction. */
4021 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4022 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4024 AvREIFY_only(PL_dbargs);
4028 Perl_init_debugger(pTHX)
4030 HV * const ostash = PL_curstash;
4033 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4035 Perl_init_dbargs(aTHX);
4036 PL_DBgv = MUTABLE_GV(
4037 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4039 PL_DBline = MUTABLE_GV(
4040 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4042 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4043 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4045 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4046 if (!SvIOK(PL_DBsingle))
4047 sv_setiv(PL_DBsingle, 0);
4048 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4049 mg->mg_private = DBVARMG_SINGLE;
4050 SvSETMAGIC(PL_DBsingle);
4052 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4053 if (!SvIOK(PL_DBtrace))
4054 sv_setiv(PL_DBtrace, 0);
4055 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4056 mg->mg_private = DBVARMG_TRACE;
4057 SvSETMAGIC(PL_DBtrace);
4059 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4060 if (!SvIOK(PL_DBsignal))
4061 sv_setiv(PL_DBsignal, 0);
4062 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4063 mg->mg_private = DBVARMG_SIGNAL;
4064 SvSETMAGIC(PL_DBsignal);
4066 SvREFCNT_dec(PL_curstash);
4067 PL_curstash = ostash;
4070 #ifndef STRESS_REALLOC
4071 #define REASONABLE(size) (size)
4072 #define REASONABLE_but_at_least(size,min) (size)
4074 #define REASONABLE(size) (1) /* unreasonable */
4075 #define REASONABLE_but_at_least(size,min) (min)
4079 Perl_init_stacks(pTHX)
4083 /* start with 128-item stack and 8K cxstack */
4084 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4085 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4086 PL_curstackinfo->si_type = PERLSI_MAIN;
4087 PL_curstack = PL_curstackinfo->si_stack;
4088 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4090 PL_stack_base = AvARRAY(PL_curstack);
4091 PL_stack_sp = PL_stack_base;
4092 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4094 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4097 PL_tmps_max = REASONABLE(128);
4099 Newx(PL_markstack,REASONABLE(32),I32);
4100 PL_markstack_ptr = PL_markstack;
4101 PL_markstack_max = PL_markstack + REASONABLE(32);
4105 Newx(PL_scopestack,REASONABLE(32),I32);
4107 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4109 PL_scopestack_ix = 0;
4110 PL_scopestack_max = REASONABLE(32);
4112 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4113 Newx(PL_savestack, size, ANY);
4114 PL_savestack_ix = 0;
4115 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4116 PL_savestack_max = size - SS_MAXPUSH;
4124 while (PL_curstackinfo->si_next)
4125 PL_curstackinfo = PL_curstackinfo->si_next;
4126 while (PL_curstackinfo) {
4127 PERL_SI *p = PL_curstackinfo->si_prev;
4128 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4129 Safefree(PL_curstackinfo->si_cxstack);
4130 Safefree(PL_curstackinfo);
4131 PL_curstackinfo = p;
4133 Safefree(PL_tmps_stack);
4134 Safefree(PL_markstack);
4135 Safefree(PL_scopestack);
4137 Safefree(PL_scopestack_name);
4139 Safefree(PL_savestack);
4143 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4145 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4146 AV *const isa = GvAVn(gv);
4149 PERL_ARGS_ASSERT_POPULATE_ISA;
4151 if(AvFILLp(isa) != -1)
4154 /* NOTE: No support for tied ISA */
4156 va_start(args, len);
4158 const char *const parent = va_arg(args, const char*);
4163 parent_len = va_arg(args, size_t);
4165 /* Arguments are supplied with a trailing :: */
4166 assert(parent_len > 2);
4167 assert(parent[parent_len - 1] == ':');
4168 assert(parent[parent_len - 2] == ':');
4169 av_push(isa, newSVpvn(parent, parent_len - 2));
4170 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4177 S_init_predump_symbols(pTHX)
4182 sv_setpvs(get_sv("\"", GV_ADD), " ");
4183 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4186 /* Historically, PVIOs were blessed into IO::Handle, unless
4187 FileHandle was loaded, in which case they were blessed into
4188 that. Action at a distance.
4189 However, if we simply bless into IO::Handle, we break code
4190 that assumes that PVIOs will have (among others) a seek
4191 method. IO::File inherits from IO::Handle and IO::Seekable,
4192 and provides the needed methods. But if we simply bless into
4193 it, then we break code that assumed that by loading
4194 IO::Handle, *it* would work.
4195 So a compromise is to set up the correct @IO::File::ISA,
4196 so that code that does C<use IO::Handle>; will still work.
4199 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4200 STR_WITH_LEN("IO::Handle::"),
4201 STR_WITH_LEN("IO::Seekable::"),
4202 STR_WITH_LEN("Exporter::"),
4205 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4206 GvMULTI_on(PL_stdingv);
4207 io = GvIOp(PL_stdingv);
4208 IoTYPE(io) = IoTYPE_RDONLY;
4209 IoIFP(io) = PerlIO_stdin();
4210 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4212 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4214 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4217 IoTYPE(io) = IoTYPE_WRONLY;
4218 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4220 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4222 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4224 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4225 GvMULTI_on(PL_stderrgv);
4226 io = GvIOp(PL_stderrgv);
4227 IoTYPE(io) = IoTYPE_WRONLY;
4228 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4229 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4231 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4233 PL_statname = newSVpvs(""); /* last filename we did stat on */
4237 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4239 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4241 argc--,argv++; /* skip name of script */
4242 if (PL_doswitches) {
4243 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4247 if (argv[0][1] == '-' && !argv[0][2]) {
4251 if ((s = strchr(argv[0], '='))) {
4252 const char *const start_name = argv[0] + 1;
4253 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4254 TRUE, SVt_PV)), s + 1);
4257 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4260 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4261 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4262 GvMULTI_on(PL_argvgv);
4263 av_clear(GvAVn(PL_argvgv));
4264 for (; argc > 0; argc--,argv++) {
4265 SV * const sv = newSVpv(argv[0],0);
4266 av_push(GvAV(PL_argvgv),sv);
4267 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4268 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4271 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4272 (void)sv_utf8_decode(sv);
4276 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4277 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4278 "-i used with no filenames on the command line, "
4279 "reading from STDIN");
4283 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4290 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4292 PL_toptarget = newSV_type(SVt_PVIV);
4293 sv_setpvs(PL_toptarget, "");
4294 PL_bodytarget = newSV_type(SVt_PVIV);
4295 sv_setpvs(PL_bodytarget, "");
4296 PL_formtarget = PL_bodytarget;
4300 init_argv_symbols(argc,argv);
4302 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4303 sv_setpv(GvSV(tmpgv),PL_origfilename);
4305 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4307 bool env_is_not_environ;
4308 SvREFCNT_inc_simple_void_NN(PL_envgv);
4309 GvMULTI_on(PL_envgv);
4310 hv = GvHVn(PL_envgv);
4311 hv_magic(hv, NULL, PERL_MAGIC_env);
4313 #ifdef USE_ENVIRON_ARRAY
4314 /* Note that if the supplied env parameter is actually a copy
4315 of the global environ then it may now point to free'd memory
4316 if the environment has been modified since. To avoid this
4317 problem we treat env==NULL as meaning 'use the default'
4321 env_is_not_environ = env != environ;
4322 if (env_is_not_environ
4323 # ifdef USE_ITHREADS
4324 && PL_curinterp == aTHX
4333 for (; *env; env++) {
4336 if (!(s = strchr(old_var,'=')) || s == old_var)
4339 #if defined(MSDOS) && !defined(DJGPP)
4341 (void)strupr(old_var);
4344 sv = newSVpv(s+1, 0);
4345 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4346 if (env_is_not_environ)
4350 #endif /* USE_ENVIRON_ARRAY */
4351 #endif /* !PERL_MICRO */
4355 /* touch @F array to prevent spurious warnings 20020415 MJD */
4357 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4362 S_init_perllib(pTHX)
4365 const char *perl5lib = NULL;
4368 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4372 if (!TAINTING_get) {
4374 perl5lib = PerlEnv_getenv("PERL5LIB");
4376 * It isn't possible to delete an environment variable with
4377 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4378 * case we treat PERL5LIB as undefined if it has a zero-length value.
4380 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4381 if (perl5lib && *perl5lib != '\0')
4385 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4387 s = PerlEnv_getenv("PERLLIB");
4389 incpush_use_sep(s, 0, 0);
4392 /* Treat PERL5?LIB as a possible search list logical name -- the
4393 * "natural" VMS idiom for a Unix path string. We allow each
4394 * element to be a set of |-separated directories for compatibility.
4398 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4400 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4401 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4403 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4404 incpush_use_sep(buf, 0, 0);
4409 #ifndef PERL_IS_MINIPERL
4410 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4411 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4413 /* Use the ~-expanded versions of APPLLIB (undocumented),
4414 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4417 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4418 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4422 /* sitearch is always relative to sitelib on Windows for
4423 * DLL-based path intuition to work correctly */
4424 # if !defined(WIN32)
4425 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4426 INCPUSH_CAN_RELOCATE);
4432 /* this picks up sitearch as well */
4433 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4435 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4437 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4441 #ifdef PERL_VENDORARCH_EXP
4442 /* vendorarch is always relative to vendorlib on Windows for
4443 * DLL-based path intuition to work correctly */
4444 # if !defined(WIN32)
4445 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4446 INCPUSH_CAN_RELOCATE);
4450 #ifdef PERL_VENDORLIB_EXP
4452 /* this picks up vendorarch as well */
4453 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4455 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4457 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4458 INCPUSH_CAN_RELOCATE);
4463 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4467 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4471 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4473 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4476 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4478 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4482 #ifdef PERL_OTHERLIBDIRS
4483 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4484 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4485 |INCPUSH_CAN_RELOCATE);
4488 if (!TAINTING_get) {
4491 * It isn't possible to delete an environment variable with
4492 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4493 * case we treat PERL5LIB as undefined if it has a zero-length value.
4495 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4496 if (perl5lib && *perl5lib != '\0')
4500 incpush_use_sep(perl5lib, 0,
4501 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4503 /* Treat PERL5?LIB as a possible search list logical name -- the
4504 * "natural" VMS idiom for a Unix path string. We allow each
4505 * element to be a set of |-separated directories for compatibility.
4509 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4511 incpush_use_sep(buf, 0,
4512 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4513 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4517 /* Use the ~-expanded versions of APPLLIB (undocumented),
4518 SITELIB and VENDORLIB for older versions
4521 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4522 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4525 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4526 /* Search for version-specific dirs below here */
4527 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4528 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4532 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4533 /* Search for version-specific dirs below here */
4534 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4535 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4538 #ifdef PERL_OTHERLIBDIRS
4539 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4540 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4541 |INCPUSH_CAN_RELOCATE);
4543 #endif /* !PERL_IS_MINIPERL */
4546 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4549 #if defined(DOSISH) || defined(__SYMBIAN32__)
4550 # define PERLLIB_SEP ';'
4553 # define PERLLIB_SEP '|'
4555 # define PERLLIB_SEP ':'
4558 #ifndef PERLLIB_MANGLE
4559 # define PERLLIB_MANGLE(s,n) (s)
4562 #ifndef PERL_IS_MINIPERL
4563 /* Push a directory onto @INC if it exists.
4564 Generate a new SV if we do this, to save needing to copy the SV we push
4567 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4571 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4573 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4574 S_ISDIR(tmpstatbuf.st_mode)) {
4576 dir = newSVsv(stem);
4578 /* Truncate dir back to stem. */
4579 SvCUR_set(dir, SvCUR(stem));
4586 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4588 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4591 PERL_ARGS_ASSERT_MAYBERELOCATE;
4594 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4595 defined to so something (in os2/os2.c), but the code has been
4596 this way, ignoring any possible changed of length, since
4597 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4599 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4605 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4607 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4608 sv_usepvn(libdir,unix,len);
4611 PerlIO_printf(Perl_error_log,
4612 "Failed to unixify @INC element \"%s\"\n",
4613 SvPV_nolen_const(libdir));
4617 /* Do the if() outside the #ifdef to avoid warnings about an unused
4620 #ifdef PERL_RELOCATABLE_INC
4622 * Relocatable include entries are marked with a leading .../
4625 * 0: Remove that leading ".../"
4626 * 1: Remove trailing executable name (anything after the last '/')
4627 * from the perl path to give a perl prefix
4629 * While the @INC element starts "../" and the prefix ends with a real
4630 * directory (ie not . or ..) chop that real directory off the prefix
4631 * and the leading "../" from the @INC element. ie a logical "../"
4633 * Finally concatenate the prefix and the remainder of the @INC element
4634 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4635 * generates /usr/local/lib/perl5
4637 const char *libpath = SvPVX(libdir);
4638 STRLEN libpath_len = SvCUR(libdir);
4639 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4641 SV * const caret_X = get_sv("\030", 0);
4642 /* Going to use the SV just as a scratch buffer holding a C
4648 /* $^X is *the* source of taint if tainting is on, hence
4649 SvPOK() won't be true. */
4651 assert(SvPOKp(caret_X));
4652 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4654 /* Firstly take off the leading .../
4655 If all else fail we'll do the paths relative to the current
4657 sv_chop(libdir, libpath + 4);
4658 /* Don't use SvPV as we're intentionally bypassing taining,
4659 mortal copies that the mg_get of tainting creates, and
4660 corruption that seems to come via the save stack.
4661 I guess that the save stack isn't correctly set up yet. */
4662 libpath = SvPVX(libdir);
4663 libpath_len = SvCUR(libdir);
4665 /* This would work more efficiently with memrchr, but as it's
4666 only a GNU extension we'd need to probe for it and
4667 implement our own. Not hard, but maybe not worth it? */
4669 prefix = SvPVX(prefix_sv);
4670 lastslash = strrchr(prefix, '/');
4672 /* First time in with the *lastslash = '\0' we just wipe off
4673 the trailing /perl from (say) /usr/foo/bin/perl
4677 while ((*lastslash = '\0'), /* Do that, come what may. */
4678 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4679 && (lastslash = strrchr(prefix, '/')))) {
4680 if (lastslash[1] == '\0'
4681 || (lastslash[1] == '.'
4682 && (lastslash[2] == '/' /* ends "/." */
4683 || (lastslash[2] == '/'
4684 && lastslash[3] == '/' /* or "/.." */
4686 /* Prefix ends "/" or "/." or "/..", any of which
4687 are fishy, so don't do any more logical cleanup.
4691 /* Remove leading "../" from path */
4694 /* Next iteration round the loop removes the last
4695 directory name from prefix by writing a '\0' in
4696 the while clause. */
4698 /* prefix has been terminated with a '\0' to the correct
4699 length. libpath points somewhere into the libdir SV.
4700 We need to join the 2 with '/' and drop the result into
4702 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4703 SvREFCNT_dec(libdir);
4704 /* And this is the new libdir. */
4707 (PerlProc_getuid() != PerlProc_geteuid() ||
4708 PerlProc_getgid() != PerlProc_getegid())) {
4709 /* Need to taint relocated paths if running set ID */
4710 SvTAINTED_on(libdir);
4713 SvREFCNT_dec(prefix_sv);
4721 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4723 #ifndef PERL_IS_MINIPERL
4724 const U8 using_sub_dirs
4725 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4726 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4727 const U8 add_versioned_sub_dirs
4728 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4729 const U8 add_archonly_sub_dirs
4730 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4731 #ifdef PERL_INC_VERSION_LIST
4732 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4735 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4736 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4737 AV *const inc = GvAVn(PL_incgv);
4739 PERL_ARGS_ASSERT_INCPUSH;
4742 /* Could remove this vestigial extra block, if we don't mind a lot of
4743 re-indenting diff noise. */
4745 SV *const libdir = mayberelocate(dir, len, flags);
4746 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4747 arranged to unshift #! line -I onto the front of @INC. However,
4748 -I can add version and architecture specific libraries, and they
4749 need to go first. The old code assumed that it was always
4750 pushing. Hence to make it work, need to push the architecture
4751 (etc) libraries onto a temporary array, then "unshift" that onto
4752 the front of @INC. */
4753 #ifndef PERL_IS_MINIPERL
4754 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4757 * BEFORE pushing libdir onto @INC we may first push version- and
4758 * archname-specific sub-directories.
4760 if (using_sub_dirs) {
4761 SV *subdir = newSVsv(libdir);
4762 #ifdef PERL_INC_VERSION_LIST
4763 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4764 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4765 const char * const *incver;
4768 if (add_versioned_sub_dirs) {
4769 /* .../version/archname if -d .../version/archname */
4770 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4771 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4773 /* .../version if -d .../version */
4774 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4775 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4778 #ifdef PERL_INC_VERSION_LIST
4780 for (incver = incverlist; *incver; incver++) {
4781 /* .../xxx if -d .../xxx */
4782 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4783 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4788 if (add_archonly_sub_dirs) {
4789 /* .../archname if -d .../archname */
4790 sv_catpvs(subdir, "/" ARCHNAME);
4791 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4795 assert (SvREFCNT(subdir) == 1);
4796 SvREFCNT_dec(subdir);
4798 #endif /* !PERL_IS_MINIPERL */
4799 /* finally add this lib directory at the end of @INC */
4801 #ifdef PERL_IS_MINIPERL
4802 const Size_t extra = 0;
4804 Size_t extra = av_tindex(av) + 1;
4806 av_unshift(inc, extra + push_basedir);
4808 av_store(inc, extra, libdir);
4809 #ifndef PERL_IS_MINIPERL
4811 /* av owns a reference, av_store() expects to be donated a
4812 reference, and av expects to be sane when it's cleared.
4813 If I wanted to be naughty and wrong, I could peek inside the
4814 implementation of av_clear(), realise that it uses
4815 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4816 and so directly steal from it (with a memcpy() to inc, and
4817 then memset() to NULL them out. But people copy code from the
4818 core expecting it to be best practise, so let's use the API.
4819 Although studious readers will note that I'm not checking any
4821 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4826 else if (push_basedir) {
4827 av_push(inc, libdir);
4830 if (!push_basedir) {
4831 assert (SvREFCNT(libdir) == 1);
4832 SvREFCNT_dec(libdir);
4838 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4842 /* This logic has been broken out from S_incpush(). It may be possible to
4845 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4847 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4848 * argument to incpush_use_sep. This allows creation of relocatable
4849 * Perl distributions that patch the binary at install time. Those
4850 * distributions will have to provide their own relocation tools; this
4851 * is not a feature otherwise supported by core Perl.
4853 #ifndef PERL_RELOCATABLE_INCPUSH
4860 /* Break at all separators */
4861 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4863 /* skip any consecutive separators */
4865 /* Uncomment the next line for PATH semantics */
4866 /* But you'll need to write tests */
4867 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4869 incpush(p, (STRLEN)(s - p), flags);
4874 incpush(p, (STRLEN)(end - p), flags);
4879 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4882 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4888 PERL_ARGS_ASSERT_CALL_LIST;
4890 while (av_tindex(paramList) >= 0) {
4891 cv = MUTABLE_CV(av_shift(paramList));
4893 if (paramList == PL_beginav) {
4894 /* save PL_beginav for compiler */
4895 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4897 else if (paramList == PL_checkav) {
4898 /* save PL_checkav for compiler */
4899 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4901 else if (paramList == PL_unitcheckav) {
4902 /* save PL_unitcheckav for compiler */
4903 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4913 (void)SvPV_const(atsv, len);
4915 PL_curcop = &PL_compiling;
4916 CopLINE_set(PL_curcop, oldline);
4917 if (paramList == PL_beginav)
4918 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4920 Perl_sv_catpvf(aTHX_ atsv,
4921 "%s failed--call queue aborted",
4922 paramList == PL_checkav ? "CHECK"
4923 : paramList == PL_initav ? "INIT"
4924 : paramList == PL_unitcheckav ? "UNITCHECK"
4926 while (PL_scopestack_ix > oldscope)
4929 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4936 /* my_exit() was called */
4937 while (PL_scopestack_ix > oldscope)
4940 SET_CURSTASH(PL_defstash);
4941 PL_curcop = &PL_compiling;
4942 CopLINE_set(PL_curcop, oldline);
4945 NOT_REACHED; /* NOTREACHED */
4948 PL_curcop = &PL_compiling;
4949 CopLINE_set(PL_curcop, oldline);
4952 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4961 Perl_my_exit(pTHX_ U32 status)
4963 if (PL_exit_flags & PERL_EXIT_ABORT) {
4966 if (PL_exit_flags & PERL_EXIT_WARN) {
4967 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4968 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4969 PL_exit_flags &= ~PERL_EXIT_ABORT;
4979 STATUS_EXIT_SET(status);
4986 Perl_my_failure_exit(pTHX)
4989 /* We have been called to fall on our sword. The desired exit code
4990 * should be already set in STATUS_UNIX, but could be shifted over
4991 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4994 * If an error code has not been set, then force the issue.
4996 if (MY_POSIX_EXIT) {
4998 /* According to the die_exit.t tests, if errno is non-zero */
4999 /* It should be used for the error status. */
5001 if (errno == EVMSERR) {
5002 STATUS_NATIVE = vaxc$errno;
5005 /* According to die_exit.t tests, if the child_exit code is */
5006 /* also zero, then we need to exit with a code of 255 */
5007 if ((errno != 0) && (errno < 256))
5008 STATUS_UNIX_EXIT_SET(errno);
5009 else if (STATUS_UNIX < 255) {
5010 STATUS_UNIX_EXIT_SET(255);
5015 /* The exit code could have been set by $? or vmsish which
5016 * means that it may not have fatal set. So convert
5017 * success/warning codes to fatal with out changing
5018 * the POSIX status code. The severity makes VMS native
5019 * status handling work, while UNIX mode programs use the
5020 * the POSIX exit codes.
5022 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5023 STATUS_NATIVE &= STS$M_COND_ID;
5024 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5028 /* Traditionally Perl on VMS always expects a Fatal Error. */
5029 if (vaxc$errno & 1) {
5031 /* So force success status to failure */
5032 if (STATUS_NATIVE & 1)
5037 STATUS_UNIX = EINTR; /* In case something cares */
5042 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5044 /* Encode the severity code */
5045 severity = STATUS_NATIVE & STS$M_SEVERITY;
5046 STATUS_UNIX = (severity ? severity : 1) << 8;
5048 /* Perl expects this to be a fatal error */
5049 if (severity != STS$K_SEVERE)
5058 STATUS_UNIX_SET(errno);
5060 exitstatus = STATUS_UNIX >> 8;
5061 if (exitstatus & 255)
5062 STATUS_UNIX_SET(exitstatus);
5064 STATUS_UNIX_SET(255);
5067 if (PL_exit_flags & PERL_EXIT_ABORT) {
5070 if (PL_exit_flags & PERL_EXIT_WARN) {
5071 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5072 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5073 PL_exit_flags &= ~PERL_EXIT_ABORT;
5079 S_my_exit_jump(pTHX)
5082 SvREFCNT_dec(PL_e_script);
5086 POPSTACK_TO(PL_mainstack);
5087 if (cxstack_ix >= 0) {
5089 cx_popblock(cxstack);
5097 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5099 const char * const p = SvPVX_const(PL_e_script);
5100 const char *nl = strchr(p, '\n');
5102 PERL_UNUSED_ARG(idx);
5103 PERL_UNUSED_ARG(maxlen);
5105 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5107 filter_del(read_e_script);
5110 sv_catpvn(buf_sv, p, nl-p);
5111 sv_chop(PL_e_script, nl);
5115 /* removes boilerplate code at the end of each boot_Module xsub */
5117 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5120 call_list(PL_scopestack_ix, PL_unitcheckav);
5125 * ex: set ts=8 sts=4 sw=4 et: