4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
61 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
62 char *getenv (char *); /* Usually in <stdlib.h> */
65 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
67 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
68 # define validate_suid(rsfp) NOOP
70 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
73 #define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
79 #define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
84 S_init_tls_and_interp(PerlInterpreter *my_perl)
88 PERL_SET_INTERP(my_perl);
89 #if defined(USE_ITHREADS)
92 PERL_SET_THX(my_perl);
96 MUTEX_INIT(&PL_dollarzero_mutex);
97 MUTEX_INIT(&PL_my_ctx_mutex);
100 #if defined(USE_ITHREADS)
103 /* This always happens for non-ithreads */
106 PERL_SET_THX(my_perl);
111 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114 Perl_sys_init(int* argc, char*** argv)
118 PERL_ARGS_ASSERT_SYS_INIT;
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
126 Perl_sys_init3(int* argc, char*** argv, char*** env)
130 PERL_ARGS_ASSERT_SYS_INIT3;
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
148 #ifdef PERL_IMPLICIT_SYS
150 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
156 PerlInterpreter *my_perl;
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160 /* Newx() needs interpreter, so call malloc() instead */
161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
162 S_init_tls_and_interp(my_perl);
163 Zero(my_perl, 1, PerlInterpreter);
173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
180 =head1 Embedding Functions
182 =for apidoc perl_alloc
184 Allocates a new Perl interpreter. See L<perlembed>.
192 PerlInterpreter *my_perl;
194 /* Newx() needs interpreter, so call malloc() instead */
195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
197 S_init_tls_and_interp(my_perl);
198 #ifndef PERL_TRACK_MEMPOOL
199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
206 #endif /* PERL_IMPLICIT_SYS */
209 =for apidoc perl_construct
211 Initializes a new Perl interpreter. See L<perlembed>.
217 perl_construct(pTHXx)
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
225 PL_perl_destruct_level = 1;
227 PERL_UNUSED_ARG(my_perl);
228 if (PL_perl_destruct_level > 0)
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233 #ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
239 SvREADONLY_on(&PL_sv_placeholder);
240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
243 #ifdef PERL_USES_PL_PIDSTATUS
244 PL_pidstatus = newHV();
247 PL_rs = newSVpvs("\n");
258 #if defined(LOCAL_PATCH_COUNT)
259 PL_localpatches = local_patches; /* For possible -v */
262 #ifdef HAVE_INTERP_INTERN
266 PerlIO_init(aTHX); /* Hook to IO system */
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
270 PL_errors = newSVpvs("");
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
278 PL_regex_pad = AvARRAY(PL_regex_padav);
279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
281 #ifdef USE_REENTRANT_API
282 Perl_reentrant_init(aTHX);
284 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
296 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
309 # ifdef USE_ENVIRON_ARRAY
310 PL_origenviron = environ;
314 /* Use sysconf(_SC_CLK_TCK) if available, if not
315 * available or if the sysconf() fails, use the HZ.
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
318 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
324 PL_stashcache = newHV();
326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
329 if (!PL_mmap_page_size) {
330 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 SETERRNO(0, SS_NORMAL);
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338 if ((long) PL_mmap_page_size < 0) {
340 SV * const error = ERRSV;
341 SvUPGRADE(error, SVt_PV);
342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
349 # ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
352 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
361 #endif /* HAS_MMAP */
363 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372 PL_registered_mros = newHV();
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
392 PL_GCB_invlist = _new_invlist_C_array(_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);
400 =for apidoc nothreadhook
402 Stub that provides thread hook for perl_destruct when there are
409 Perl_nothreadhook(pTHX)
415 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417 Perl_dump_sv_child(pTHX_ SV *sv)
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
422 union control_un control;
425 struct cmsghdr *cmptr;
427 unsigned char buffer[256];
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431 if(sock == -1 || debug_fd == -1)
434 PerlIO_flush(Perl_debug_log);
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
440 be open, the wait would be forever.) */
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
461 perror("Debug leaking scalars parent sendmsg failed");
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
469 /* Return protocol is
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
479 got = readv(sock, vec, 2);
482 perror("Debug leaking scalars parent read failed");
483 PerlIO_flush(PerlIO_stderr());
486 if(got < sizeof(returned_errno) + 1) {
487 perror("Debug leaking scalars parent short read");
488 PerlIO_flush(PerlIO_stderr());
493 got = read(sock, buffer + 1, *buffer);
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
510 returned_errno, Strerror(returned_errno));
516 =for apidoc perl_destruct
518 Shuts down a Perl interpreter. See L<perlembed>.
527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
529 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536 PERL_UNUSED_ARG(my_perl);
539 assert(PL_scopestack_ix == 1);
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
544 destruct_level = PL_perl_destruct_level;
545 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
560 if (destruct_level < i) destruct_level = i;
562 #ifdef PERL_TRACK_MEMPOOL
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
576 if (PL_endav && !PL_minus_c) {
577 PERL_SET_PHASE(PERL_PHASE_END);
578 call_list(PL_scopestack_ix, PL_endav);
584 assert(PL_scopestack_ix == 0);
586 /* Need to flush since END blocks can produce output */
589 #ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
603 if (PL_threadhook(aTHX)) {
604 /* Threads hook has vetoed further cleanup */
605 PL_veto_cleanup = TRUE;
609 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
625 perror("Debug leaking scalars fork failed");
629 /* We are the child */
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
634 /* Our success message is an integer 0, and a char 0 */
635 static const char success[sizeof(int) + 1] = {0};
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
651 f = sysconf(_SC_OPEN_MAX);
653 where = "sysconf failed";
664 union control_un control;
667 struct cmsghdr *cmptr;
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
679 vec[0].iov_base = (void*)⌖
680 vec[0].iov_len = sizeof(target);
682 got = recvmsg(sock, &msg, 0);
687 where = "recv failed";
690 if(got < sizeof(target)) {
691 where = "short recv";
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
724 PerlIO_flush(Perl_debug_log);
726 got = write(sock, &success, sizeof(success));
729 where = "write failed";
732 if(got < sizeof(success)) {
733 where = "short write";
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
745 {(void*)where, length}
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
754 _exit((got == -1) ? errno : 0);
758 PL_dumper_fd = fd[0];
763 /* We must account for everything. */
765 /* Destroy the main CV and syntax tree */
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
770 PL_curcop = &PL_compiling;
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
777 op_free(PL_main_root);
780 PL_main_start = NULL;
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
785 SvREFCNT_dec(PL_main_cv);
787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
794 PerlIO_destruct(aTHX);
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
803 /* unhook hooks which will soon be, or use, destroyed data */
804 SvREFCNT_dec(PL_warnhook);
806 SvREFCNT_dec(PL_diehook);
809 /* call exit list functions */
810 while (PL_exitlistlen-- > 0)
811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
813 Safefree(PL_exitlist);
818 SvREFCNT_dec(PL_registered_mros);
820 /* jettison our possibly duplicated environment */
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
825 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
826 if (environ != PL_origenviron && !PL_use_safe_putenv
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
835 for (i = 0; environ[i]; i++)
836 safesysfree(environ[i]);
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
841 environ = PL_origenviron;
844 #endif /* !PERL_MICRO */
846 if (destruct_level == 0) {
848 DEBUG_P(debprofdump());
850 #if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
855 CopFILE_free(&PL_compiling);
857 /* The exit() function will do everything that needs doing. */
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
882 PL_stashcache = NULL;
884 /* loosen bonds of global variables */
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
893 Safefree(PL_splitstr);
903 PL_doswitches = FALSE;
904 PL_dowarn = G_WARN_OFF;
905 #ifdef PERL_SAWAMPERSAND
906 PL_sawampersand = 0; /* must save all match strings */
910 Safefree(PL_inplace);
912 SvREFCNT_dec(PL_patchlevel);
915 SvREFCNT_dec(PL_e_script);
921 /* magical thingies */
923 SvREFCNT_dec(PL_ofsgv); /* *, */
926 SvREFCNT_dec(PL_ors_sv); /* $\ */
929 SvREFCNT_dec(PL_rs); /* $/ */
932 Safefree(PL_osname); /* $^O */
935 SvREFCNT_dec(PL_statname);
939 /* defgv, aka *_ should be taken care of elsewhere */
942 Safefree(PL_efloatbuf);
946 /* startup and shutdown function lists */
947 SvREFCNT_dec(PL_beginav);
948 SvREFCNT_dec(PL_beginav_save);
949 SvREFCNT_dec(PL_endav);
950 SvREFCNT_dec(PL_checkav);
951 SvREFCNT_dec(PL_checkav_save);
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
954 SvREFCNT_dec(PL_initav);
956 PL_beginav_save = NULL;
959 PL_checkav_save = NULL;
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
964 /* shortcuts just get cleared */
970 PL_last_in_gv = NULL;
981 SvREFCNT_dec(PL_envgv);
982 SvREFCNT_dec(PL_incgv);
983 SvREFCNT_dec(PL_argvgv);
984 SvREFCNT_dec(PL_replgv);
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
996 SvREFCNT_dec(PL_argvout_stack);
997 PL_argvout_stack = NULL;
999 SvREFCNT_dec(PL_modglobal);
1000 PL_modglobal = NULL;
1001 SvREFCNT_dec(PL_preambleav);
1002 PL_preambleav = NULL;
1003 SvREFCNT_dec(PL_subname);
1005 #ifdef PERL_USES_PL_PIDSTATUS
1006 SvREFCNT_dec(PL_pidstatus);
1007 PL_pidstatus = NULL;
1009 SvREFCNT_dec(PL_toptarget);
1010 PL_toptarget = NULL;
1011 SvREFCNT_dec(PL_bodytarget);
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
1015 /* free locale stuff */
1016 #ifdef USE_LOCALE_COLLATE
1017 Safefree(PL_collation_name);
1018 PL_collation_name = NULL;
1021 #ifdef USE_LOCALE_NUMERIC
1022 Safefree(PL_numeric_name);
1023 PL_numeric_name = NULL;
1024 SvREFCNT_dec(PL_numeric_radix_sv);
1025 PL_numeric_radix_sv = NULL;
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
1035 SvREFCNT_dec(PL_utf8_totitle);
1036 SvREFCNT_dec(PL_utf8_tolower);
1037 SvREFCNT_dec(PL_utf8_tofold);
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
1040 SvREFCNT_dec(PL_utf8_foldable);
1041 SvREFCNT_dec(PL_utf8_foldclosures);
1042 SvREFCNT_dec(PL_AboveLatin1);
1043 SvREFCNT_dec(PL_InBitmap);
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
1048 #ifdef USE_LOCALE_CTYPE
1049 SvREFCNT_dec(PL_warn_locale);
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
1058 PL_utf8_foldclosures = NULL;
1059 PL_AboveLatin1 = NULL;
1061 PL_HasMultiCharFold = NULL;
1062 #ifdef USE_LOCALE_CTYPE
1063 PL_warn_locale = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
1072 PL_GCB_invlist = NULL;
1073 PL_SB_invlist = NULL;
1074 PL_WB_invlist = NULL;
1076 if (!specialWARN(PL_compiling.cop_warnings))
1077 PerlMemShared_free(PL_compiling.cop_warnings);
1078 PL_compiling.cop_warnings = NULL;
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1081 CopFILE_free(&PL_compiling);
1083 /* Prepare to destruct main symbol table. */
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1090 SvREFCNT_dec(PL_curstname);
1091 PL_curstname = NULL;
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
1097 SvREFCNT_dec(PL_isarev);
1100 if (destruct_level >= 2) {
1101 if (PL_scopestack_ix != 0)
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
1105 if (PL_savestack_ix != 0)
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
1109 if (PL_tmps_floor != -1)
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
1112 if (cxstack_ix != -1)
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1123 #ifdef PERL_IMPLICIT_CONTEXT
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
1131 /* the 2 is for PL_fdpid and PL_strtab */
1132 while (sv_clean_all() > 2)
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1143 #ifdef HAVE_INTERP_INTERN
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1153 /* Destruct the global string table. */
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
1162 const I32 max = HvMAX(PL_strtab);
1163 HE * const * const array = HvARRAY(PL_strtab);
1164 HE *hent = array[0];
1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
1168 HE * const next = HeNEXT(hent);
1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1178 hent = array[riter];
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
1186 SvREFCNT_dec(PL_strtab);
1189 /* free the pointer tables used for cloning */
1190 ptr_table_free(PL_ptr_table);
1191 PL_ptr_table = (PTR_TBL_t*)NULL;
1194 /* free special SVs */
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
1199 SvFLAGS(&PL_sv_yes) = 0;
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
1204 SvFLAGS(&PL_sv_no) = 0;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1219 #ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
1241 PTR2UV(sv->sv_debug_parent),
1244 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1245 Perl_dump_sv_child(aTHX_ sv);
1251 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1258 struct timeval waitfor = {4, 0};
1259 int sock = PL_dumper_fd;
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1270 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1276 #if defined(PERLIO_LAYERS)
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1282 as currently layers use it rather than NULL as a marker
1283 for no arg - and will try and SvREFCNT_dec it.
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1288 Safefree(PL_origfilename);
1289 PL_origfilename = NULL;
1290 Safefree(PL_reg_curpm);
1291 free_tied_hv_pool();
1292 Safefree(PL_op_mask);
1293 Safefree(PL_psig_name);
1294 PL_psig_name = (SV**)NULL;
1295 PL_psig_ptr = (SV**)NULL;
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1308 DEBUG_P(debprofdump());
1312 #ifdef USE_REENTRANT_API
1313 Perl_reentrant_free(aTHX);
1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1334 /* we know that type == SVt_PVMG */
1336 /* it could have accumulated taint magic */
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1343 Safefree(mg->mg_ptr);
1347 /* we know that type >= SVt_PV */
1348 SvPV_free(PL_mess_sv);
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
1357 =for apidoc perl_free
1359 Releases a Perl interpreter. See L<perlembed>.
1369 PERL_ARGS_ASSERT_PERL_FREE;
1371 if (PL_veto_cleanup)
1374 #ifdef PERL_TRACK_MEMPOOL
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1380 if (PL_perl_destruct_level == 0) {
1381 const U32 old_debug = PL_debug;
1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1394 PL_debug = old_debug;
1399 #if defined(WIN32) || defined(NETWARE)
1400 # if defined(PERL_IMPLICIT_SYS)
1403 void *host = nw_internal_host;
1404 PerlMem_free(aTHXx);
1405 nw_delete_internal_host(host);
1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
1409 win32_delete_internal_host(host);
1413 PerlMem_free(aTHXx);
1416 PerlMem_free(aTHXx);
1420 #if defined(USE_ITHREADS)
1421 /* provide destructors to clean up the thread key when libperl is unloaded */
1422 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1424 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1425 #pragma fini "perl_fini"
1426 #elif defined(__sun) && !defined(__GNUC__)
1427 #pragma fini (perl_fini)
1431 #if defined(__GNUC__)
1432 __attribute__((destructor))
1438 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1441 PL_curinterp && !PL_veto_cleanup)
1446 #endif /* THREADS */
1449 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1458 =for apidoc perl_parse
1460 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1465 #define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1472 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480 #ifndef MULTIPLICITY
1481 PERL_UNUSED_ARG(my_perl);
1483 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1487 if (s && strEQ(s, "1")) {
1488 const unsigned char *seed= PERL_HASH_SEED;
1489 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1494 #ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1499 PerlIO_printf(Perl_debug_log, "\n");
1502 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1506 struct NameTranslationInfo nti;
1507 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
1523 * the original argv[0]. (See below for 'contiguous', though.)
1525 const char *s = NULL;
1527 const UV mask = ~(UV)(PTRSIZE-1);
1528 /* Do the mask check only if the args seem like aligned. */
1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
1546 || PL_origargv[i] == s + 2
1551 (PL_origargv[i] > s &&
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1564 #ifndef PERL_USE_SAFE_PUTENV
1565 /* Can we grab env area too to be used as the area for $0? */
1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
1567 if ((PL_origenviron[0] == s + 1)
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1576 s = PL_origenviron[0];
1579 my_setenv("NoNe SuCh", NULL);
1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1590 s = PL_origenviron[i];
1598 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1605 /* Come here if running an undumped a.out. */
1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
1609 cxstack_ix = -1; /* start label stack again */
1611 assert (!TAINT_get);
1615 init_postdump_symbols(argc,argv,env);
1620 op_free(PL_main_root);
1621 PL_main_root = NULL;
1623 PL_main_start = NULL;
1624 SvREFCNT_dec(PL_main_cv);
1628 oldscope = PL_scopestack_ix;
1629 PL_dowarn = G_WARN_OFF;
1634 parse_body(env,xsinit);
1635 if (PL_unitcheckav) {
1636 call_list(oldscope, PL_unitcheckav);
1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
1640 call_list(oldscope, PL_checkav);
1648 /* my_exit() was called */
1649 while (PL_scopestack_ix > oldscope)
1652 SET_CURSTASH(PL_defstash);
1653 if (PL_unitcheckav) {
1654 call_list(oldscope, PL_unitcheckav);
1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
1658 call_list(oldscope, PL_checkav);
1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1671 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1674 /* What this returns is subject to change. Use the public interface in Config.
1677 S_Internals_V(pTHX_ CV *cv)
1680 #ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1683 const int local_patch_count = 0;
1685 const int entries = 3 + local_patch_count;
1687 static const char non_bincompat_options[] =
1694 # ifdef NO_HASH_SEED
1697 # ifdef NO_TAINT_SUPPORT
1700 # ifdef PERL_BOOL_AS_CHAR
1701 " PERL_BOOL_AS_CHAR"
1703 # ifdef PERL_COPY_ON_WRITE
1704 " PERL_COPY_ON_WRITE"
1706 # ifdef PERL_DISABLE_PMC
1709 # ifdef PERL_DONT_CREATE_GVSV
1710 " PERL_DONT_CREATE_GVSV"
1712 # ifdef PERL_EXTERNAL_GLOB
1713 " PERL_EXTERNAL_GLOB"
1715 # ifdef PERL_HASH_FUNC_SIPHASH
1716 " PERL_HASH_FUNC_SIPHASH"
1718 # ifdef PERL_HASH_FUNC_SDBM
1719 " PERL_HASH_FUNC_SDBM"
1721 # ifdef PERL_HASH_FUNC_DJB2
1722 " PERL_HASH_FUNC_DJB2"
1724 # ifdef PERL_HASH_FUNC_SUPERFAST
1725 " PERL_HASH_FUNC_SUPERFAST"
1727 # ifdef PERL_HASH_FUNC_MURMUR3
1728 " PERL_HASH_FUNC_MURMUR3"
1730 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1731 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1733 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1734 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1736 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1737 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1739 # ifdef PERL_IS_MINIPERL
1742 # ifdef PERL_MALLOC_WRAP
1745 # ifdef PERL_MEM_LOG
1748 # ifdef PERL_MEM_LOG_NOIMPL
1749 " PERL_MEM_LOG_NOIMPL"
1751 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1752 " PERL_PERTURB_KEYS_DETERMINISTIC"
1754 # ifdef PERL_PERTURB_KEYS_DISABLED
1755 " PERL_PERTURB_KEYS_DISABLED"
1757 # ifdef PERL_PERTURB_KEYS_RANDOM
1758 " PERL_PERTURB_KEYS_RANDOM"
1760 # ifdef PERL_PRESERVE_IVUV
1761 " PERL_PRESERVE_IVUV"
1763 # ifdef PERL_RELOCATABLE_INCPUSH
1764 " PERL_RELOCATABLE_INCPUSH"
1766 # ifdef PERL_USE_DEVEL
1769 # ifdef PERL_USE_SAFE_PUTENV
1770 " PERL_USE_SAFE_PUTENV"
1772 # ifdef UNLINK_ALL_VERSIONS
1773 " UNLINK_ALL_VERSIONS"
1775 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1776 " USE_ATTRIBUTES_FOR_PERLIO"
1778 # ifdef USE_FAST_STDIO
1781 # ifdef USE_HASH_SEED_EXPLICIT
1782 " USE_HASH_SEED_EXPLICIT"
1787 # ifdef USE_LOCALE_CTYPE
1790 # ifdef WIN32_NO_REGISTRY
1793 # ifdef USE_PERL_ATOF
1796 # ifdef USE_SITECUSTOMIZE
1797 " USE_SITECUSTOMIZE"
1800 PERL_UNUSED_ARG(cv);
1801 PERL_UNUSED_VAR(items);
1803 EXTEND(SP, entries);
1805 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1806 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1807 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1809 #ifndef PERL_BUILD_DATE
1812 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1814 # define PERL_BUILD_DATE __DATE__
1819 #ifdef PERL_BUILD_DATE
1820 PUSHs(Perl_newSVpvn_flags(aTHX_
1821 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1824 PUSHs(&PL_sv_undef);
1827 for (i = 1; i <= local_patch_count; i++) {
1828 /* This will be an undef, if PL_localpatches[i] is NULL. */
1829 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1835 #define INCPUSH_UNSHIFT 0x01
1836 #define INCPUSH_ADD_OLD_VERS 0x02
1837 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1838 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1839 #define INCPUSH_NOT_BASEDIR 0x10
1840 #define INCPUSH_CAN_RELOCATE 0x20
1841 #define INCPUSH_ADD_SUB_DIRS \
1842 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1845 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1849 int argc = PL_origargc;
1850 char **argv = PL_origargv;
1851 const char *scriptname = NULL;
1852 bool dosearch = FALSE;
1854 bool doextract = FALSE;
1855 const char *cddir = NULL;
1856 #ifdef USE_SITECUSTOMIZE
1857 bool minus_f = FALSE;
1859 SV *linestr_sv = NULL;
1860 bool add_read_e_script = FALSE;
1861 U32 lex_start_flags = 0;
1863 PERL_SET_PHASE(PERL_PHASE_START);
1869 for (argc--,argv++; argc > 0; argc--,argv++) {
1870 if (argv[0][0] != '-' || !argv[0][1])
1876 #ifndef PERL_STRICT_CR
1900 if ((s = moreswitches(s)))
1905 #if defined(SILENT_NO_TAINT_SUPPORT)
1906 /* silently ignore */
1907 #elif defined(NO_TAINT_SUPPORT)
1908 Perl_croak_nocontext("This perl was compiled without taint support. "
1909 "Cowardly refusing to run with -t or -T flags");
1911 CHECK_MALLOC_TOO_LATE_FOR('t');
1912 if( !TAINTING_get ) {
1913 TAINT_WARN_set(TRUE);
1920 #if defined(SILENT_NO_TAINT_SUPPORT)
1921 /* silently ignore */
1922 #elif defined(NO_TAINT_SUPPORT)
1923 Perl_croak_nocontext("This perl was compiled without taint support. "
1924 "Cowardly refusing to run with -t or -T flags");
1926 CHECK_MALLOC_TOO_LATE_FOR('T');
1928 TAINT_WARN_set(FALSE);
1937 forbid_setid('e', FALSE);
1939 PL_e_script = newSVpvs("");
1940 add_read_e_script = TRUE;
1943 sv_catpv(PL_e_script, s);
1945 sv_catpv(PL_e_script, argv[1]);
1949 Perl_croak(aTHX_ "No code specified for -%c", c);
1950 sv_catpvs(PL_e_script, "\n");
1954 #ifdef USE_SITECUSTOMIZE
1960 case 'I': /* -I handled both here and in moreswitches() */
1961 forbid_setid('I', FALSE);
1962 if (!*++s && (s=argv[1]) != NULL) {
1966 STRLEN len = strlen(s);
1967 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1970 Perl_croak(aTHX_ "No directory specified for -I");
1973 forbid_setid('S', FALSE);
1982 opts_prog = newSVpvs("use Config; Config::_V()");
1986 opts_prog = Perl_newSVpvf(aTHX_
1987 "use Config; Config::config_vars(qw%c%s%c)",
1991 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
1992 /* don't look for script or read stdin */
1993 scriptname = BIT_BUCKET;
2005 if (!*++s || isSPACE(*s)) {
2009 /* catch use of gnu style long options.
2010 Both of these exit immediately. */
2011 if (strEQ(s, "version"))
2013 if (strEQ(s, "help"))
2018 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2029 #ifndef SECURE_INTERNAL_GETENV
2032 (s = PerlEnv_getenv("PERL5OPT")))
2034 /* s points to static memory in getenv(), which may be overwritten at
2035 * any time; use a mortal copy instead */
2036 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2040 if (*s == '-' && *(s+1) == 'T') {
2041 #if defined(SILENT_NO_TAINT_SUPPORT)
2042 /* silently ignore */
2043 #elif defined(NO_TAINT_SUPPORT)
2044 Perl_croak_nocontext("This perl was compiled without taint support. "
2045 "Cowardly refusing to run with -t or -T flags");
2047 CHECK_MALLOC_TOO_LATE_FOR('T');
2049 TAINT_WARN_set(FALSE);
2053 char *popt_copy = NULL;
2066 if (!strchr("CDIMUdmtwW", *s))
2067 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2071 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2072 s = popt_copy + (s - d);
2080 #if defined(SILENT_NO_TAINT_SUPPORT)
2081 /* silently ignore */
2082 #elif defined(NO_TAINT_SUPPORT)
2083 Perl_croak_nocontext("This perl was compiled without taint support. "
2084 "Cowardly refusing to run with -t or -T flags");
2086 if( !TAINTING_get) {
2087 TAINT_WARN_set(TRUE);
2099 /* Set $^X early so that it can be used for relocatable paths in @INC */
2100 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2101 assert (!TAINT_get);
2106 #if defined(USE_SITECUSTOMIZE)
2108 /* The games with local $! are to avoid setting errno if there is no
2109 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2110 ie a q() operator with a NUL byte as a the delimiter. This avoids
2111 problems with pathnames containing (say) ' */
2112 # ifdef PERL_IS_MINIPERL
2113 AV *const inc = GvAV(PL_incgv);
2114 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2117 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2118 it should be reported immediately as a build failure. */
2119 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2121 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2122 "do {local $!; -f $f }"
2123 " and do $f || die $@ || qq '$f: $!' }",
2124 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2127 /* SITELIB_EXP is a function call on Win32. */
2128 const char *const raw_sitelib = SITELIB_EXP;
2130 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2131 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2132 INCPUSH_CAN_RELOCATE);
2133 const char *const sitelib = SvPVX(sitelib_sv);
2134 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2136 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2137 0, SVfARG(sitelib), 0,
2138 0, SVfARG(sitelib), 0));
2139 assert (SvREFCNT(sitelib_sv) == 1);
2140 SvREFCNT_dec(sitelib_sv);
2147 scriptname = argv[0];
2150 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2152 else if (scriptname == NULL) {
2154 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2160 assert (!TAINT_get);
2164 bool suidscript = FALSE;
2166 rsfp = open_script(scriptname, dosearch, &suidscript);
2168 rsfp = PerlIO_stdin();
2169 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2172 validate_suid(rsfp);
2175 # if defined(SIGCHLD) || defined(SIGCLD)
2178 # define SIGCHLD SIGCLD
2180 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2181 if (sigstate == (Sighandler_t) SIG_IGN) {
2182 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2183 "Can't ignore signal CHLD, forcing to default");
2184 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2192 /* This will croak if suidscript is true, as -x cannot be used with
2194 forbid_setid('x', suidscript);
2195 /* Hence you can't get here if suidscript is true */
2197 linestr_sv = newSV_type(SVt_PV);
2198 lex_start_flags |= LEX_START_COPIED;
2199 find_beginning(linestr_sv, rsfp);
2200 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2201 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2205 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2206 CvUNIQUE_on(PL_compcv);
2208 CvPADLIST_set(PL_compcv, pad_new(0));
2210 PL_isarev = newHV();
2213 boot_core_UNIVERSAL();
2215 newXS("Internals::V", S_Internals_V, __FILE__);
2218 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2220 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2226 # ifdef HAS_SOCKS5_INIT
2227 socks5_init(argv[0]);
2233 init_predump_symbols();
2234 /* init_postdump_symbols not currently designed to be called */
2235 /* more than once (ENV isn't cleared first, for example) */
2236 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2238 init_postdump_symbols(argc,argv,env);
2240 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2241 * or explicitly in some platforms.
2242 * locale.c:Perl_init_i18nl10n() if the environment
2243 * look like the user wants to use UTF-8. */
2244 #if defined(__SYMBIAN32__)
2245 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2247 # ifndef PERL_IS_MINIPERL
2249 /* Requires init_predump_symbols(). */
2250 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2255 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2256 * and the default open disciplines. */
2257 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2258 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2260 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2261 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2262 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2264 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2265 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2266 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2268 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2269 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2270 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2272 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2273 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2276 sv_setpvs(sv, ":utf8\0:utf8");
2278 sv_setpvs(sv, ":utf8\0");
2281 sv_setpvs(sv, "\0:utf8");
2290 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2291 if (strEQ(s, "unsafe"))
2292 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2293 else if (strEQ(s, "safe"))
2294 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2296 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2301 lex_start(linestr_sv, rsfp, lex_start_flags);
2302 SvREFCNT_dec(linestr_sv);
2304 PL_subname = newSVpvs("main");
2306 if (add_read_e_script)
2307 filter_add(read_e_script, NULL);
2309 /* now parse the script */
2311 SETERRNO(0,SS_NORMAL);
2312 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2314 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2316 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2320 CopLINE_set(PL_curcop, 0);
2321 SET_CURSTASH(PL_defstash);
2323 SvREFCNT_dec(PL_e_script);
2331 SAVECOPFILE(PL_curcop);
2332 SAVECOPLINE(PL_curcop);
2333 gv_check(PL_defstash);
2343 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2344 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2345 dump_mstats("after compilation:");
2350 PL_restartjmpenv = NULL;
2356 =for apidoc perl_run
2358 Tells a Perl interpreter to run. See L<perlembed>.
2370 PERL_ARGS_ASSERT_PERL_RUN;
2371 #ifndef MULTIPLICITY
2372 PERL_UNUSED_ARG(my_perl);
2375 oldscope = PL_scopestack_ix;
2383 cxstack_ix = -1; /* start context stack again */
2385 case 0: /* normal completion */
2389 case 2: /* my_exit() */
2390 while (PL_scopestack_ix > oldscope)
2393 SET_CURSTASH(PL_defstash);
2394 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2395 PL_endav && !PL_minus_c) {
2396 PERL_SET_PHASE(PERL_PHASE_END);
2397 call_list(oldscope, PL_endav);
2400 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2401 dump_mstats("after execution: ");
2407 POPSTACK_TO(PL_mainstack);
2410 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2421 S_run_body(pTHX_ I32 oldscope)
2423 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2424 PL_sawampersand ? "Enabling" : "Omitting",
2425 (unsigned int)(PL_sawampersand)));
2427 if (!PL_restartop) {
2429 if (DEBUG_x_TEST || DEBUG_B_TEST)
2430 dump_all_perl(!DEBUG_B_TEST);
2432 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2436 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2439 if (PERLDB_SINGLE && PL_DBsingle)
2442 PERL_SET_PHASE(PERL_PHASE_INIT);
2443 call_list(oldscope, PL_initav);
2445 #ifdef PERL_DEBUG_READONLY_OPS
2446 if (PL_main_root && PL_main_root->op_slabbed)
2447 Slab_to_ro(OpSLAB(PL_main_root));
2453 PERL_SET_PHASE(PERL_PHASE_RUN);
2456 PL_restartjmpenv = NULL;
2457 PL_op = PL_restartop;
2461 else if (PL_main_start) {
2462 CvDEPTH(PL_main_cv) = 1;
2463 PL_op = PL_main_start;
2467 NOT_REACHED; /* NOTREACHED */
2471 =head1 SV Manipulation Functions
2473 =for apidoc p||get_sv
2475 Returns the SV of the specified Perl scalar. C<flags> are passed to
2476 C<gv_fetchpv>. If C<GV_ADD> is set and the
2477 Perl variable does not exist then it will be created. If C<flags> is zero
2478 and the variable does not exist then NULL is returned.
2484 Perl_get_sv(pTHX_ const char *name, I32 flags)
2488 PERL_ARGS_ASSERT_GET_SV;
2490 gv = gv_fetchpv(name, flags, SVt_PV);
2497 =head1 Array Manipulation Functions
2499 =for apidoc p||get_av
2501 Returns the AV of the specified Perl global or package array with the given
2502 name (so it won't work on lexical variables). C<flags> are passed
2503 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2504 Perl variable does not exist then it will be created. If C<flags> is zero
2505 and the variable does not exist then NULL is returned.
2507 Perl equivalent: C<@{"$name"}>.
2513 Perl_get_av(pTHX_ const char *name, I32 flags)
2515 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2517 PERL_ARGS_ASSERT_GET_AV;
2527 =head1 Hash Manipulation Functions
2529 =for apidoc p||get_hv
2531 Returns the HV of the specified Perl hash. C<flags> are passed to
2532 C<gv_fetchpv>. If C<GV_ADD> is set and the
2533 Perl variable does not exist then it will be created. If C<flags> is zero
2534 and the variable does not exist then C<NULL> is returned.
2540 Perl_get_hv(pTHX_ const char *name, I32 flags)
2542 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2544 PERL_ARGS_ASSERT_GET_HV;
2554 =head1 CV Manipulation Functions
2556 =for apidoc p||get_cvn_flags
2558 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2559 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2560 exist then it will be declared (which has the same effect as saying
2561 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2562 then NULL is returned.
2564 =for apidoc p||get_cv
2566 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2572 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2574 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2576 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2578 /* XXX this is probably not what they think they're getting.
2579 * It has the same effect as "sub name;", i.e. just a forward
2581 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2582 return newSTUB(gv,0);
2589 /* Nothing in core calls this now, but we can't replace it with a macro and
2590 move it to mathoms.c as a macro would evaluate name twice. */
2592 Perl_get_cv(pTHX_ const char *name, I32 flags)
2594 PERL_ARGS_ASSERT_GET_CV;
2596 return get_cvn_flags(name, strlen(name), flags);
2599 /* Be sure to refetch the stack pointer after calling these routines. */
2603 =head1 Callback Functions
2605 =for apidoc p||call_argv
2607 Performs a callback to the specified named and package-scoped Perl subroutine
2608 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2611 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2617 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2619 /* See G_* flags in cop.h */
2620 /* null terminated arg list */
2624 PERL_ARGS_ASSERT_CALL_ARGV;
2628 mXPUSHs(newSVpv(*argv,0));
2632 return call_pv(sub_name, flags);
2636 =for apidoc p||call_pv
2638 Performs a callback to the specified Perl sub. See L<perlcall>.
2644 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2645 /* name of the subroutine */
2646 /* See G_* flags in cop.h */
2648 PERL_ARGS_ASSERT_CALL_PV;
2650 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2654 =for apidoc p||call_method
2656 Performs a callback to the specified Perl method. The blessed object must
2657 be on the stack. See L<perlcall>.
2663 Perl_call_method(pTHX_ const char *methname, I32 flags)
2664 /* name of the subroutine */
2665 /* See G_* flags in cop.h */
2669 PERL_ARGS_ASSERT_CALL_METHOD;
2671 len = strlen(methname);
2672 sv = flags & G_METHOD_NAMED
2673 ? sv_2mortal(newSVpvn_share(methname, len,0))
2674 : newSVpvn_flags(methname, len, SVs_TEMP);
2676 return call_sv(sv, flags | G_METHOD);
2679 /* May be called with any of a CV, a GV, or an SV containing the name. */
2681 =for apidoc p||call_sv
2683 Performs a callback to the Perl sub specified by the SV.
2685 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2686 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2687 or C<SvPV(sv)> will be used as the name of the sub to call.
2689 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2690 C<SvPV(sv)> will be used as the name of the method to call.
2692 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2693 the name of the method to call.
2695 Some other values are treated specially for internal use and should
2704 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2705 /* See G_* flags in cop.h */
2708 LOGOP myop; /* fake syntax tree node */
2713 bool oldcatch = CATCH_GET;
2715 OP* const oldop = PL_op;
2718 PERL_ARGS_ASSERT_CALL_SV;
2720 if (flags & G_DISCARD) {
2724 if (!(flags & G_WANT)) {
2725 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2730 Zero(&myop, 1, LOGOP);
2731 if (!(flags & G_NOARGS))
2732 myop.op_flags |= OPf_STACKED;
2733 myop.op_flags |= OP_GIMME_REVERSE(flags);
2737 if (!(flags & G_METHOD_NAMED)) {
2744 oldscope = PL_scopestack_ix;
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);
2778 myop.op_other = (OP*)&myop;
2780 create_eval_scope(flags|G_FAKINGEVAL);
2788 CALL_BODY_SUB((OP*)&myop);
2789 retval = PL_stack_sp - (PL_stack_base + oldmark);
2790 if (!(flags & G_KEEPERR)) {
2798 /* my_exit() was called */
2799 SET_CURSTASH(PL_defstash);
2803 NOT_REACHED; /* NOTREACHED */
2806 PL_restartjmpenv = NULL;
2807 PL_op = PL_restartop;
2811 PL_stack_sp = PL_stack_base + oldmark;
2812 if ((flags & G_WANT) == G_ARRAY)
2816 *++PL_stack_sp = &PL_sv_undef;
2821 if (PL_scopestack_ix > oldscope)
2822 delete_eval_scope();
2826 if (flags & G_DISCARD) {
2827 PL_stack_sp = PL_stack_base + oldmark;
2836 /* Eval a string. The G_EVAL flag is always assumed. */
2839 =for apidoc p||eval_sv
2841 Tells Perl to C<eval> the string in the SV. It supports the same flags
2842 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2848 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2850 /* See G_* flags in cop.h */
2853 UNOP myop; /* fake syntax tree node */
2857 OP* const oldop = PL_op;
2860 PERL_ARGS_ASSERT_EVAL_SV;
2862 if (flags & G_DISCARD) {
2869 Zero(&myop, 1, UNOP);
2872 oldmark = SP - PL_stack_base;
2878 if (!(flags & G_NOARGS))
2879 myop.op_flags = OPf_STACKED;
2880 myop.op_type = OP_ENTEREVAL;
2881 myop.op_flags |= OP_GIMME_REVERSE(flags);
2882 if (flags & G_KEEPERR)
2883 myop.op_flags |= OPf_SPECIAL;
2885 if (flags & G_RE_REPARSING)
2886 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2888 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2889 * before a PUSHEVAL, which corrupts the stack after a croak */
2890 TAINT_PROPER("eval_sv()");
2896 if (PL_op == (OP*)(&myop)) {
2897 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2899 goto fail; /* failed in compilation */
2902 retval = PL_stack_sp - (PL_stack_base + oldmark);
2903 if (!(flags & G_KEEPERR)) {
2911 /* my_exit() was called */
2912 SET_CURSTASH(PL_defstash);
2916 NOT_REACHED; /* NOTREACHED */
2919 PL_restartjmpenv = NULL;
2920 PL_op = PL_restartop;
2925 PL_stack_sp = PL_stack_base + oldmark;
2926 if ((flags & G_WANT) == G_ARRAY)
2930 *++PL_stack_sp = &PL_sv_undef;
2936 if (flags & G_DISCARD) {
2937 PL_stack_sp = PL_stack_base + oldmark;
2947 =for apidoc p||eval_pv
2949 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
2955 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2957 SV* sv = newSVpv(p, 0);
2959 PERL_ARGS_ASSERT_EVAL_PV;
2961 eval_sv(sv, G_SCALAR);
2970 /* just check empty string or undef? */
2971 if (croak_on_error) {
2972 SV * const errsv = ERRSV;
2973 if(SvTRUE_NN(errsv))
2974 /* replace with croak_sv? */
2975 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2981 /* Require a module. */
2984 =head1 Embedding Functions
2986 =for apidoc p||require_pv
2988 Tells Perl to C<require> the file named by the string argument. It is
2989 analogous to the Perl code C<eval "require '$file'">. It's even
2990 implemented that way; consider using load_module instead.
2995 Perl_require_pv(pTHX_ const char *pv)
3000 PERL_ARGS_ASSERT_REQUIRE_PV;
3002 PUSHSTACKi(PERLSI_REQUIRE);
3003 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3004 eval_sv(sv_2mortal(sv), G_DISCARD);
3009 S_usage(pTHX) /* XXX move this out into a module ? */
3011 /* This message really ought to be max 23 lines.
3012 * Removed -h because the user already knows that option. Others? */
3014 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3015 minimum of 509 character string literals. */
3016 static const char * const usage_msg[] = {
3017 " -0[octal] specify record separator (\\0, if no argument)\n"
3018 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3019 " -C[number/list] enables the listed Unicode features\n"
3020 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3021 " -d[:debugger] run program under debugger\n"
3022 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3023 " -e program one line of program (several -e's allowed, omit programfile)\n"
3024 " -E program like -e, but enables all optional features\n"
3025 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3026 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3027 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3028 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3029 " -l[octal] enable line ending processing, specifies line terminator\n"
3030 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3031 " -n assume \"while (<>) { ... }\" loop around program\n"
3032 " -p assume loop like -n but print line also, like sed\n"
3033 " -s enable rudimentary parsing for switches after programfile\n"
3034 " -S look for programfile using PATH environment variable\n",
3035 " -t enable tainting warnings\n"
3036 " -T enable tainting checks\n"
3037 " -u dump core after parsing program\n"
3038 " -U allow unsafe operations\n"
3039 " -v print version, patchlevel and license\n"
3040 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3041 " -w enable many useful warnings\n"
3042 " -W enable all warnings\n"
3043 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3044 " -X disable all warnings\n"
3046 "Run 'perldoc perl' for more help with Perl.\n\n",
3049 const char * const *p = usage_msg;
3050 PerlIO *out = PerlIO_stdout();
3053 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3056 PerlIO_puts(out, *p++);
3060 /* convert a string of -D options (or digits) into an int.
3061 * sets *s to point to the char after the options */
3065 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3067 static const char * const usage_msgd[] = {
3068 " Debugging flag values: (see also -d)\n"
3069 " p Tokenizing and parsing (with v, displays parse stack)\n"
3070 " s Stack snapshots (with v, displays all stacks)\n"
3071 " l Context (loop) stack processing\n"
3072 " t Trace execution\n"
3073 " o Method and overloading resolution\n",
3074 " c String/numeric conversions\n"
3075 " P Print profiling info, source file input state\n"
3076 " m Memory and SV allocation\n"
3077 " f Format processing\n"
3078 " r Regular expression parsing and execution\n"
3079 " x Syntax tree dump\n",
3080 " u Tainting checks\n"
3081 " H Hash dump -- usurps values()\n"
3082 " X Scratchpad allocation\n"
3084 " S Op slab allocation\n"
3086 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3087 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3088 " v Verbose: use in conjunction with other flags\n"
3089 " C Copy On Write\n"
3090 " A Consistency checks on internal structures\n"
3091 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3092 " M trace smart match resolution\n"
3093 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3094 " L trace some locale setting information--for Perl core development\n",
3099 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3102 /* if adding extra options, remember to update DEBUG_MASK */
3103 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
3105 for (; isWORDCHAR(**s); (*s)++) {
3106 const char * const d = strchr(debopts,**s);
3108 uv |= 1 << (d - debopts);
3109 else if (ckWARN_d(WARN_DEBUGGING))
3110 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3111 "invalid option -D%c, use -D'' to see choices\n", **s);
3114 else if (isDIGIT(**s)) {
3116 if (grok_atoUV(*s, &uv, &e))
3118 for (; isWORDCHAR(**s); (*s)++) ;
3120 else if (givehelp) {
3121 const char *const *p = usage_msgd;
3122 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3124 return (int)uv; /* ignore any UV->int conversion loss */
3128 /* This routine handles any switches that can be given during run */
3131 Perl_moreswitches(pTHX_ const char *s)
3135 const char option = *s; /* used to remember option in -m/-M code */
3137 PERL_ARGS_ASSERT_MORESWITCHES;
3145 SvREFCNT_dec(PL_rs);
3146 if (s[1] == 'x' && s[2]) {
3147 const char *e = s+=2;
3153 flags = PERL_SCAN_SILENT_ILLDIGIT;
3154 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3155 if (s + numlen < e) {
3156 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3160 PL_rs = newSVpvs("");
3161 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3162 tmps = (U8*)SvPVX(PL_rs);
3163 uvchr_to_utf8(tmps, rschar);
3164 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3169 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3170 if (rschar & ~((U8)~0))
3171 PL_rs = &PL_sv_undef;
3172 else if (!rschar && numlen >= 2)
3173 PL_rs = newSVpvs("");
3175 char ch = (char)rschar;
3176 PL_rs = newSVpvn(&ch, 1);
3179 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3184 PL_unicode = parse_unicode_opts( (const char **)&s );
3185 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3193 while (*s && !isSPACE(*s)) ++s;
3194 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3206 forbid_setid('d', FALSE);
3209 /* -dt indicates to the debugger that threads will be used */
3210 if (*s == 't' && !isWORDCHAR(s[1])) {
3212 my_setenv("PERL5DB_THREADED", "1");
3215 /* The following permits -d:Mod to accepts arguments following an =
3216 in the fashion that -MSome::Mod does. */
3217 if (*s == ':' || *s == '=') {
3224 sv = newSVpvs("no Devel::");
3226 sv = newSVpvs("use Devel::");
3230 end = s + strlen(s);
3232 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3233 while(isWORDCHAR(*s) || *s==':') ++s;
3235 sv_catpvn(sv, start, end - start);
3237 sv_catpvn(sv, start, s-start);
3238 /* Don't use NUL as q// delimiter here, this string goes in the
3240 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3243 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3247 PL_perldb = PERLDB_ALL;
3254 forbid_setid('D', FALSE);
3256 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3257 #else /* !DEBUGGING */
3258 if (ckWARN_d(WARN_DEBUGGING))
3259 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3260 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3261 for (s++; isWORDCHAR(*s); s++) ;
3264 NOT_REACHED; /* NOTREACHED */
3268 NOT_REACHED; /* NOTREACHED */
3271 Safefree(PL_inplace);
3272 #if defined(__CYGWIN__) /* do backup extension automagically */
3273 if (*(s+1) == '\0') {
3274 PL_inplace = savepvs(".bak");
3277 #endif /* __CYGWIN__ */
3279 const char * const start = ++s;
3280 while (*s && !isSPACE(*s))
3283 PL_inplace = savepvn(start, s - start);
3287 if (*s == '-') /* Additional switches on #! line. */
3291 case 'I': /* -I handled both here and in parse_body() */
3292 forbid_setid('I', FALSE);
3294 while (*s && isSPACE(*s))
3299 /* ignore trailing spaces (possibly followed by other switches) */
3301 for (e = p; *e && !isSPACE(*e); e++) ;
3305 } while (*p && *p != '-');
3307 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3313 Perl_croak(aTHX_ "No directory specified for -I");
3319 SvREFCNT_dec(PL_ors_sv);
3325 PL_ors_sv = newSVpvs("\n");
3326 numlen = 3 + (*s == '0');
3327 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3331 if (RsPARA(PL_rs)) {
3332 PL_ors_sv = newSVpvs("\n\n");
3335 PL_ors_sv = newSVsv(PL_rs);
3340 forbid_setid('M', FALSE); /* XXX ? */
3343 forbid_setid('m', FALSE); /* XXX ? */
3348 const char *use = "use ";
3350 /* -M-foo == 'no foo' */
3351 /* Leading space on " no " is deliberate, to make both
3352 possibilities the same length. */
3353 if (*s == '-') { use = " no "; ++s; }
3354 sv = newSVpvn(use,4);
3356 /* We allow -M'Module qw(Foo Bar)' */
3357 while(isWORDCHAR(*s) || *s==':') {
3366 Perl_croak(aTHX_ "Module name required with -%c option",
3369 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3370 "contains single ':'",
3371 (int)(s - start), start, option);
3372 end = s + strlen(s);
3374 sv_catpvn(sv, start, end - start);
3375 if (option == 'm') {
3377 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3378 sv_catpvs( sv, " ()");
3381 sv_catpvn(sv, start, s-start);
3382 /* Use NUL as q''-delimiter. */
3383 sv_catpvs(sv, " split(/,/,q\0");
3385 sv_catpvn(sv, s, end - s);
3386 sv_catpvs(sv, "\0)");
3389 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3392 Perl_croak(aTHX_ "Missing argument to -%c", option);
3403 forbid_setid('s', FALSE);
3404 PL_doswitches = TRUE;
3409 #if defined(SILENT_NO_TAINT_SUPPORT)
3410 /* silently ignore */
3411 #elif defined(NO_TAINT_SUPPORT)
3412 Perl_croak_nocontext("This perl was compiled without taint support. "
3413 "Cowardly refusing to run with -t or -T flags");
3421 PL_do_undump = TRUE;
3431 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3432 PL_dowarn |= G_WARN_ON;
3437 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3438 if (!specialWARN(PL_compiling.cop_warnings))
3439 PerlMemShared_free(PL_compiling.cop_warnings);
3440 PL_compiling.cop_warnings = pWARN_ALL ;
3444 PL_dowarn = G_WARN_ALL_OFF;
3445 if (!specialWARN(PL_compiling.cop_warnings))
3446 PerlMemShared_free(PL_compiling.cop_warnings);
3447 PL_compiling.cop_warnings = pWARN_NONE ;
3454 if (s[0] == '-') /* Additional switches on #! line. */
3459 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3465 #ifdef ALTERNATE_SHEBANG
3466 case 'S': /* OS/2 needs -S on "extproc" line. */
3469 case 'e': case 'f': case 'x': case 'E':
3470 #ifndef ALTERNATE_SHEBANG
3474 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3477 "Unrecognized switch: -%.1s (-h will show valid options)",s
3487 PerlIO * PIO_stdout;
3489 const char * const level_str = "v" PERL_VERSION_STRING;
3490 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3491 #ifdef PERL_PATCHNUM
3493 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3494 static const char num [] = PERL_PATCHNUM "*";
3496 static const char num [] = PERL_PATCHNUM;
3499 const STRLEN num_len = sizeof(num)-1;
3500 /* A very advanced compiler would fold away the strnEQ
3501 and this whole conditional, but most (all?) won't do it.
3502 SV level could also be replaced by with preprocessor
3505 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3506 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3507 of the interp so it might contain format characters
3509 level = newSVpvn(num, num_len);
3511 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3515 SV* level = newSVpvn(level_str, level_len);
3516 #endif /* #ifdef PERL_PATCHNUM */
3517 PIO_stdout = PerlIO_stdout();
3518 PerlIO_printf(PIO_stdout,
3519 "\nThis is perl " STRINGIFY(PERL_REVISION)
3520 ", version " STRINGIFY(PERL_VERSION)
3521 ", subversion " STRINGIFY(PERL_SUBVERSION)
3522 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3524 SvREFCNT_dec_NN(level);
3526 #if defined(LOCAL_PATCH_COUNT)
3527 if (LOCAL_PATCH_COUNT > 0)
3528 PerlIO_printf(PIO_stdout,
3529 "\n(with %d registered patch%s, "
3530 "see perl -V for more detail)",
3532 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3535 PerlIO_printf(PIO_stdout,
3536 "\n\nCopyright 1987-2015, Larry Wall\n");
3538 PerlIO_printf(PIO_stdout,
3539 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3542 PerlIO_printf(PIO_stdout,
3543 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3544 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3547 PerlIO_printf(PIO_stdout,
3548 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3549 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3552 PerlIO_printf(PIO_stdout,
3553 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3556 PerlIO_printf(PIO_stdout,
3557 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3560 PerlIO_printf(PIO_stdout,
3561 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3564 PerlIO_printf(PIO_stdout,
3565 "WINCE port by Rainer Keuchel, 2001-2002\n"
3566 "Built on " __DATE__ " " __TIME__ "\n\n");
3569 #ifdef __SYMBIAN32__
3570 PerlIO_printf(PIO_stdout,
3571 "Symbian port by Nokia, 2004-2005\n");
3573 #ifdef BINARY_BUILD_NOTICE
3574 BINARY_BUILD_NOTICE;
3576 PerlIO_printf(PIO_stdout,
3578 Perl may be copied only under the terms of either the Artistic License or the\n\
3579 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3580 Complete documentation for Perl, including FAQ lists, should be found on\n\
3581 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3582 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3586 /* compliments of Tom Christiansen */
3588 /* unexec() can be found in the Gnu emacs distribution */
3589 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3592 #include <lib$routines.h>
3596 Perl_my_unexec(pTHX)
3599 SV * prog = newSVpv(BIN_EXP, 0);
3600 SV * file = newSVpv(PL_origfilename, 0);
3604 sv_catpvs(prog, "/perl");
3605 sv_catpvs(file, ".perldump");
3607 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3608 /* unexec prints msg to stderr in case of failure */
3609 PerlProc_exit(status);
3611 PERL_UNUSED_CONTEXT;
3613 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3614 # elif defined(WIN32) || defined(__CYGWIN__)
3615 Perl_croak_nocontext("dump is not supported");
3617 ABORT(); /* for use with undump */
3622 /* initialize curinterp */
3627 # define PERLVAR(prefix,var,type)
3628 # define PERLVARA(prefix,var,n,type)
3629 # if defined(PERL_IMPLICIT_CONTEXT)
3630 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3631 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3633 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3634 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3636 # include "intrpvar.h"
3642 # define PERLVAR(prefix,var,type)
3643 # define PERLVARA(prefix,var,n,type)
3644 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3645 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3646 # include "intrpvar.h"
3656 S_init_main_stash(pTHX)
3660 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3661 /* We know that the string "main" will be in the global shared string
3662 table, so it's a small saving to use it rather than allocate another
3664 PL_curstname = newSVpvs_share("main");
3665 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3666 /* If we hadn't caused another reference to "main" to be in the shared
3667 string table above, then it would be worth reordering these two,
3668 because otherwise all we do is delete "main" from it as a consequence
3669 of the SvREFCNT_dec, only to add it again with hv_name_set */
3670 SvREFCNT_dec(GvHV(gv));
3671 hv_name_set(PL_defstash, "main", 4, 0);
3672 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3674 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3676 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3677 GvMULTI_on(PL_incgv);
3678 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3679 SvREFCNT_inc_simple_void(PL_hintgv);
3680 GvMULTI_on(PL_hintgv);
3681 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3682 SvREFCNT_inc_simple_void(PL_defgv);
3683 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3684 SvREFCNT_inc_simple_void(PL_errgv);
3685 GvMULTI_on(PL_errgv);
3686 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3687 SvREFCNT_inc_simple_void(PL_replgv);
3688 GvMULTI_on(PL_replgv);
3689 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3690 #ifdef PERL_DONT_CREATE_GVSV
3691 (void)gv_SVadd(PL_errgv);
3693 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3695 SET_CURSTASH(PL_defstash);
3696 CopSTASH_set(&PL_compiling, PL_defstash);
3697 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3698 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3700 /* We must init $/ before switches are processed. */
3701 sv_setpvs(get_sv("/", GV_ADD), "\n");
3705 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3708 PerlIO *rsfp = NULL;
3712 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3715 PL_origfilename = savepvs("-e");
3720 /* if find_script() returns, it returns a malloc()-ed value */
3721 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3723 if (strnEQ(scriptname, "/dev/fd/", 8)
3724 && isDIGIT(scriptname[8])
3725 && grok_atoUV(scriptname + 8, &uv, &s)
3726 && uv <= PERL_INT_MAX
3731 * Tell apart "normal" usage of fdscript, e.g.
3732 * with bash on FreeBSD:
3733 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3734 * from usage in suidperl.
3735 * Does any "normal" usage leave garbage after the number???
3736 * Is it a mistake to use a similar /dev/fd/ construct for
3741 * Be supersafe and do some sanity-checks.
3742 * Still, can we be sure we got the right thing?
3745 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3748 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3750 scriptname = savepv(s + 1);
3751 Safefree(PL_origfilename);
3752 PL_origfilename = (char *)scriptname;
3757 CopFILE_free(PL_curcop);
3758 CopFILE_set(PL_curcop, PL_origfilename);
3759 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3760 scriptname = (char *)"";
3761 if (fdscript >= 0) {
3762 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3764 else if (!*scriptname) {
3765 forbid_setid(0, *suidscript);
3769 #ifdef FAKE_BIT_BUCKET
3770 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3771 * is called) and still have the "-e" work. (Believe it or not,
3772 * a /dev/null is required for the "-e" to work because source
3773 * filter magic is used to implement it. ) This is *not* a general
3774 * replacement for a /dev/null. What we do here is create a temp
3775 * file (an empty file), open up that as the script, and then
3776 * immediately close and unlink it. Close enough for jazz. */
3777 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3778 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3779 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3780 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3781 FAKE_BIT_BUCKET_TEMPLATE
3783 const char * const err = "Failed to create a fake bit bucket";
3784 if (strEQ(scriptname, BIT_BUCKET)) {
3785 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3786 int old_umask = umask(0600);
3787 int tmpfd = mkstemp(tmpname);
3790 scriptname = tmpname;
3793 Perl_croak(aTHX_ err);
3796 scriptname = mktemp(tmpname);
3798 Perl_croak(aTHX_ err);
3803 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3804 #ifdef FAKE_BIT_BUCKET
3805 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3806 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3807 && strlen(scriptname) == sizeof(tmpname) - 1) {
3810 scriptname = BIT_BUCKET;
3814 /* PSz 16 Sep 03 Keep neat error message */
3816 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3818 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3819 CopFILE(PL_curcop), Strerror(errno));
3821 fd = PerlIO_fileno(rsfp);
3822 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3824 /* ensure close-on-exec */
3825 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3826 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3827 CopFILE(PL_curcop), Strerror(errno));
3833 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3834 && S_ISDIR(tmpstatbuf.st_mode)))
3835 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3843 * I_SYSSTATVFS HAS_FSTATVFS
3845 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3846 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3847 * here so that metaconfig picks them up. */
3850 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3851 /* Don't even need this function. */
3854 S_validate_suid(pTHX_ PerlIO *rsfp)
3856 const Uid_t my_uid = PerlProc_getuid();
3857 const Uid_t my_euid = PerlProc_geteuid();
3858 const Gid_t my_gid = PerlProc_getgid();
3859 const Gid_t my_egid = PerlProc_getegid();
3861 PERL_ARGS_ASSERT_VALIDATE_SUID;
3863 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3865 int fd = PerlIO_fileno(rsfp);
3867 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3868 Perl_croak_nocontext( "Illegal suidscript");
3870 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3872 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3875 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3876 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3877 /* not set-id, must be wrapped */
3880 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3883 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3888 PERL_ARGS_ASSERT_FIND_BEGINNING;
3890 /* skip forward in input to the real script? */
3893 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3894 Perl_croak(aTHX_ "No Perl script found in input\n");
3896 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3897 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3898 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3900 while (*s == ' ' || *s == '\t') s++;
3902 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3903 || s2[-1] == '_') s2--;
3904 if (strnEQ(s2-4,"perl",4))
3905 while ((s = moreswitches(s)))
3914 /* no need to do anything here any more if we don't
3916 #ifndef NO_TAINT_SUPPORT
3917 const Uid_t my_uid = PerlProc_getuid();
3918 const Uid_t my_euid = PerlProc_geteuid();
3919 const Gid_t my_gid = PerlProc_getgid();
3920 const Gid_t my_egid = PerlProc_getegid();
3922 PERL_UNUSED_CONTEXT;
3924 /* Should not happen: */
3925 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3926 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3930 * Should go by suidscript, not uid!=euid: why disallow
3931 * system("ls") in scripts run from setuid things?
3932 * Or, is this run before we check arguments and set suidscript?
3933 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3934 * (We never have suidscript, can we be sure to have fdscript?)
3935 * Or must then go by UID checks? See comments in forbid_setid also.
3939 /* This is used very early in the lifetime of the program,
3940 * before even the options are parsed, so PL_tainting has
3941 * not been initialized properly. */
3943 Perl_doing_taint(int argc, char *argv[], char *envp[])
3945 #ifndef PERL_IMPLICIT_SYS
3946 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3947 * before we have an interpreter-- and the whole point of this
3948 * function is to be called at such an early stage. If you are on
3949 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3950 * "tainted because running with altered effective ids', you'll
3951 * have to add your own checks somewhere in here. The two most
3952 * known samples of 'implicitness' are Win32 and NetWare, neither
3953 * of which has much of concept of 'uids'. */
3954 Uid_t uid = PerlProc_getuid();
3955 Uid_t euid = PerlProc_geteuid();
3956 Gid_t gid = PerlProc_getgid();
3957 Gid_t egid = PerlProc_getegid();
3964 if (uid && (euid != uid || egid != gid))
3966 #endif /* !PERL_IMPLICIT_SYS */
3967 /* This is a really primitive check; environment gets ignored only
3968 * if -T are the first chars together; otherwise one gets
3969 * "Too late" message. */
3970 if ( argc > 1 && argv[1][0] == '-'
3971 && isALPHA_FOLD_EQ(argv[1][1], 't'))
3976 /* Passing the flag as a single char rather than a string is a slight space
3977 optimisation. The only message that isn't /^-.$/ is
3978 "program input from stdin", which is substituted in place of '\0', which
3979 could never be a command line flag. */
3981 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3983 char string[3] = "-x";
3984 const char *message = "program input from stdin";
3986 PERL_UNUSED_CONTEXT;
3992 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3993 if (PerlProc_getuid() != PerlProc_geteuid())
3994 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
3995 if (PerlProc_getgid() != PerlProc_getegid())
3996 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
3997 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3999 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4003 Perl_init_dbargs(pTHX)
4005 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4010 /* Someone has already created it.
4011 It might have entries, and if we just turn off AvREAL(), they will
4012 "leak" until global destruction. */
4014 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4015 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4017 AvREIFY_only(PL_dbargs);
4021 Perl_init_debugger(pTHX)
4023 HV * const ostash = PL_curstash;
4026 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4028 Perl_init_dbargs(aTHX);
4029 PL_DBgv = MUTABLE_GV(
4030 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4032 PL_DBline = MUTABLE_GV(
4033 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4035 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4036 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4038 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4039 if (!SvIOK(PL_DBsingle))
4040 sv_setiv(PL_DBsingle, 0);
4041 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4042 mg->mg_private = DBVARMG_SINGLE;
4043 SvSETMAGIC(PL_DBsingle);
4045 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4046 if (!SvIOK(PL_DBtrace))
4047 sv_setiv(PL_DBtrace, 0);
4048 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4049 mg->mg_private = DBVARMG_TRACE;
4050 SvSETMAGIC(PL_DBtrace);
4052 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4053 if (!SvIOK(PL_DBsignal))
4054 sv_setiv(PL_DBsignal, 0);
4055 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4056 mg->mg_private = DBVARMG_SIGNAL;
4057 SvSETMAGIC(PL_DBsignal);
4059 SvREFCNT_dec(PL_curstash);
4060 PL_curstash = ostash;
4063 #ifndef STRESS_REALLOC
4064 #define REASONABLE(size) (size)
4065 #define REASONABLE_but_at_least(size,min) (size)
4067 #define REASONABLE(size) (1) /* unreasonable */
4068 #define REASONABLE_but_at_least(size,min) (min)
4072 Perl_init_stacks(pTHX)
4074 /* start with 128-item stack and 8K cxstack */
4075 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4076 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4077 PL_curstackinfo->si_type = PERLSI_MAIN;
4078 PL_curstack = PL_curstackinfo->si_stack;
4079 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4081 PL_stack_base = AvARRAY(PL_curstack);
4082 PL_stack_sp = PL_stack_base;
4083 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4085 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4088 PL_tmps_max = REASONABLE(128);
4090 Newx(PL_markstack,REASONABLE(32),I32);
4091 PL_markstack_ptr = PL_markstack;
4092 PL_markstack_max = PL_markstack + REASONABLE(32);
4096 Newx(PL_scopestack,REASONABLE(32),I32);
4098 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4100 PL_scopestack_ix = 0;
4101 PL_scopestack_max = REASONABLE(32);
4103 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
4104 PL_savestack_ix = 0;
4105 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
4113 while (PL_curstackinfo->si_next)
4114 PL_curstackinfo = PL_curstackinfo->si_next;
4115 while (PL_curstackinfo) {
4116 PERL_SI *p = PL_curstackinfo->si_prev;
4117 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4118 Safefree(PL_curstackinfo->si_cxstack);
4119 Safefree(PL_curstackinfo);
4120 PL_curstackinfo = p;
4122 Safefree(PL_tmps_stack);
4123 Safefree(PL_markstack);
4124 Safefree(PL_scopestack);
4126 Safefree(PL_scopestack_name);
4128 Safefree(PL_savestack);
4132 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4134 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4135 AV *const isa = GvAVn(gv);
4138 PERL_ARGS_ASSERT_POPULATE_ISA;
4140 if(AvFILLp(isa) != -1)
4143 /* NOTE: No support for tied ISA */
4145 va_start(args, len);
4147 const char *const parent = va_arg(args, const char*);
4152 parent_len = va_arg(args, size_t);
4154 /* Arguments are supplied with a trailing :: */
4155 assert(parent_len > 2);
4156 assert(parent[parent_len - 1] == ':');
4157 assert(parent[parent_len - 2] == ':');
4158 av_push(isa, newSVpvn(parent, parent_len - 2));
4159 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4166 S_init_predump_symbols(pTHX)
4171 sv_setpvs(get_sv("\"", GV_ADD), " ");
4172 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4175 /* Historically, PVIOs were blessed into IO::Handle, unless
4176 FileHandle was loaded, in which case they were blessed into
4177 that. Action at a distance.
4178 However, if we simply bless into IO::Handle, we break code
4179 that assumes that PVIOs will have (among others) a seek
4180 method. IO::File inherits from IO::Handle and IO::Seekable,
4181 and provides the needed methods. But if we simply bless into
4182 it, then we break code that assumed that by loading
4183 IO::Handle, *it* would work.
4184 So a compromise is to set up the correct @IO::File::ISA,
4185 so that code that does C<use IO::Handle>; will still work.
4188 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4189 STR_WITH_LEN("IO::Handle::"),
4190 STR_WITH_LEN("IO::Seekable::"),
4191 STR_WITH_LEN("Exporter::"),
4194 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4195 GvMULTI_on(PL_stdingv);
4196 io = GvIOp(PL_stdingv);
4197 IoTYPE(io) = IoTYPE_RDONLY;
4198 IoIFP(io) = PerlIO_stdin();
4199 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4201 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4203 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4206 IoTYPE(io) = IoTYPE_WRONLY;
4207 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4209 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4211 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4213 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4214 GvMULTI_on(PL_stderrgv);
4215 io = GvIOp(PL_stderrgv);
4216 IoTYPE(io) = IoTYPE_WRONLY;
4217 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4218 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4220 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4222 PL_statname = newSVpvs(""); /* last filename we did stat on */
4226 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4228 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4230 argc--,argv++; /* skip name of script */
4231 if (PL_doswitches) {
4232 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4236 if (argv[0][1] == '-' && !argv[0][2]) {
4240 if ((s = strchr(argv[0], '='))) {
4241 const char *const start_name = argv[0] + 1;
4242 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4243 TRUE, SVt_PV)), s + 1);
4246 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4249 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4250 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4251 GvMULTI_on(PL_argvgv);
4252 av_clear(GvAVn(PL_argvgv));
4253 for (; argc > 0; argc--,argv++) {
4254 SV * const sv = newSVpv(argv[0],0);
4255 av_push(GvAV(PL_argvgv),sv);
4256 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4257 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4260 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4261 (void)sv_utf8_decode(sv);
4265 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4266 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4267 "-i used with no filenames on the command line, "
4268 "reading from STDIN");
4272 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4279 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4281 PL_toptarget = newSV_type(SVt_PVIV);
4282 sv_setpvs(PL_toptarget, "");
4283 PL_bodytarget = newSV_type(SVt_PVIV);
4284 sv_setpvs(PL_bodytarget, "");
4285 PL_formtarget = PL_bodytarget;
4289 init_argv_symbols(argc,argv);
4291 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4292 sv_setpv(GvSV(tmpgv),PL_origfilename);
4294 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4296 bool env_is_not_environ;
4297 SvREFCNT_inc_simple_void_NN(PL_envgv);
4298 GvMULTI_on(PL_envgv);
4299 hv = GvHVn(PL_envgv);
4300 hv_magic(hv, NULL, PERL_MAGIC_env);
4302 #ifdef USE_ENVIRON_ARRAY
4303 /* Note that if the supplied env parameter is actually a copy
4304 of the global environ then it may now point to free'd memory
4305 if the environment has been modified since. To avoid this
4306 problem we treat env==NULL as meaning 'use the default'
4310 env_is_not_environ = env != environ;
4311 if (env_is_not_environ
4312 # ifdef USE_ITHREADS
4313 && PL_curinterp == aTHX
4322 for (; *env; env++) {
4325 if (!(s = strchr(old_var,'=')) || s == old_var)
4328 #if defined(MSDOS) && !defined(DJGPP)
4330 (void)strupr(old_var);
4333 sv = newSVpv(s+1, 0);
4334 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4335 if (env_is_not_environ)
4339 #endif /* USE_ENVIRON_ARRAY */
4340 #endif /* !PERL_MICRO */
4344 /* touch @F array to prevent spurious warnings 20020415 MJD */
4346 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4351 S_init_perllib(pTHX)
4354 const char *perl5lib = NULL;
4357 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4361 if (!TAINTING_get) {
4363 perl5lib = PerlEnv_getenv("PERL5LIB");
4365 * It isn't possible to delete an environment variable with
4366 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4367 * case we treat PERL5LIB as undefined if it has a zero-length value.
4369 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4370 if (perl5lib && *perl5lib != '\0')
4374 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4376 s = PerlEnv_getenv("PERLLIB");
4378 incpush_use_sep(s, 0, 0);
4381 /* Treat PERL5?LIB as a possible search list logical name -- the
4382 * "natural" VMS idiom for a Unix path string. We allow each
4383 * element to be a set of |-separated directories for compatibility.
4387 if (my_trnlnm("PERL5LIB",buf,0))
4389 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4390 } while (my_trnlnm("PERL5LIB",buf,++idx));
4392 while (my_trnlnm("PERLLIB",buf,idx++))
4393 incpush_use_sep(buf, 0, 0);
4398 #ifndef PERL_IS_MINIPERL
4399 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4400 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4402 /* Use the ~-expanded versions of APPLLIB (undocumented),
4403 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4406 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4407 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4411 /* sitearch is always relative to sitelib on Windows for
4412 * DLL-based path intuition to work correctly */
4413 # if !defined(WIN32)
4414 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4415 INCPUSH_CAN_RELOCATE);
4421 /* this picks up sitearch as well */
4422 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4424 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4426 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4430 #ifdef PERL_VENDORARCH_EXP
4431 /* vendorarch is always relative to vendorlib on Windows for
4432 * DLL-based path intuition to work correctly */
4433 # if !defined(WIN32)
4434 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4435 INCPUSH_CAN_RELOCATE);
4439 #ifdef PERL_VENDORLIB_EXP
4441 /* this picks up vendorarch as well */
4442 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4444 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4446 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4447 INCPUSH_CAN_RELOCATE);
4452 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4456 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4460 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4462 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4465 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4467 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4471 #ifdef PERL_OTHERLIBDIRS
4472 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4473 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4474 |INCPUSH_CAN_RELOCATE);
4477 if (!TAINTING_get) {
4480 * It isn't possible to delete an environment variable with
4481 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4482 * case we treat PERL5LIB as undefined if it has a zero-length value.
4484 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4485 if (perl5lib && *perl5lib != '\0')
4489 incpush_use_sep(perl5lib, 0,
4490 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4492 /* Treat PERL5?LIB as a possible search list logical name -- the
4493 * "natural" VMS idiom for a Unix path string. We allow each
4494 * element to be a set of |-separated directories for compatibility.
4498 if (my_trnlnm("PERL5LIB",buf,0))
4500 incpush_use_sep(buf, 0,
4501 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4502 } while (my_trnlnm("PERL5LIB",buf,++idx));
4506 /* Use the ~-expanded versions of APPLLIB (undocumented),
4507 SITELIB and VENDORLIB for older versions
4510 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4511 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4514 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4515 /* Search for version-specific dirs below here */
4516 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4517 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4521 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4522 /* Search for version-specific dirs below here */
4523 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4524 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4527 #ifdef PERL_OTHERLIBDIRS
4528 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4529 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4530 |INCPUSH_CAN_RELOCATE);
4532 #endif /* !PERL_IS_MINIPERL */
4535 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4538 #if defined(DOSISH) || defined(__SYMBIAN32__)
4539 # define PERLLIB_SEP ';'
4542 # define PERLLIB_SEP '|'
4544 # define PERLLIB_SEP ':'
4547 #ifndef PERLLIB_MANGLE
4548 # define PERLLIB_MANGLE(s,n) (s)
4551 #ifndef PERL_IS_MINIPERL
4552 /* Push a directory onto @INC if it exists.
4553 Generate a new SV if we do this, to save needing to copy the SV we push
4556 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4560 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4562 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4563 S_ISDIR(tmpstatbuf.st_mode)) {
4565 dir = newSVsv(stem);
4567 /* Truncate dir back to stem. */
4568 SvCUR_set(dir, SvCUR(stem));
4575 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4577 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4580 PERL_ARGS_ASSERT_MAYBERELOCATE;
4583 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4584 defined to so something (in os2/os2.c), but the code has been
4585 this way, ignoring any possible changed of length, since
4586 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4588 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4594 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4596 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4597 sv_usepvn(libdir,unix,len);
4600 PerlIO_printf(Perl_error_log,
4601 "Failed to unixify @INC element \"%s\"\n",
4602 SvPV_nolen_const(libdir));
4606 /* Do the if() outside the #ifdef to avoid warnings about an unused
4609 #ifdef PERL_RELOCATABLE_INC
4611 * Relocatable include entries are marked with a leading .../
4614 * 0: Remove that leading ".../"
4615 * 1: Remove trailing executable name (anything after the last '/')
4616 * from the perl path to give a perl prefix
4618 * While the @INC element starts "../" and the prefix ends with a real
4619 * directory (ie not . or ..) chop that real directory off the prefix
4620 * and the leading "../" from the @INC element. ie a logical "../"
4622 * Finally concatenate the prefix and the remainder of the @INC element
4623 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4624 * generates /usr/local/lib/perl5
4626 const char *libpath = SvPVX(libdir);
4627 STRLEN libpath_len = SvCUR(libdir);
4628 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4630 SV * const caret_X = get_sv("\030", 0);
4631 /* Going to use the SV just as a scratch buffer holding a C
4637 /* $^X is *the* source of taint if tainting is on, hence
4638 SvPOK() won't be true. */
4640 assert(SvPOKp(caret_X));
4641 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4643 /* Firstly take off the leading .../
4644 If all else fail we'll do the paths relative to the current
4646 sv_chop(libdir, libpath + 4);
4647 /* Don't use SvPV as we're intentionally bypassing taining,
4648 mortal copies that the mg_get of tainting creates, and
4649 corruption that seems to come via the save stack.
4650 I guess that the save stack isn't correctly set up yet. */
4651 libpath = SvPVX(libdir);
4652 libpath_len = SvCUR(libdir);
4654 /* This would work more efficiently with memrchr, but as it's
4655 only a GNU extension we'd need to probe for it and
4656 implement our own. Not hard, but maybe not worth it? */
4658 prefix = SvPVX(prefix_sv);
4659 lastslash = strrchr(prefix, '/');
4661 /* First time in with the *lastslash = '\0' we just wipe off
4662 the trailing /perl from (say) /usr/foo/bin/perl
4666 while ((*lastslash = '\0'), /* Do that, come what may. */
4667 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4668 && (lastslash = strrchr(prefix, '/')))) {
4669 if (lastslash[1] == '\0'
4670 || (lastslash[1] == '.'
4671 && (lastslash[2] == '/' /* ends "/." */
4672 || (lastslash[2] == '/'
4673 && lastslash[3] == '/' /* or "/.." */
4675 /* Prefix ends "/" or "/." or "/..", any of which
4676 are fishy, so don't do any more logical cleanup.
4680 /* Remove leading "../" from path */
4683 /* Next iteration round the loop removes the last
4684 directory name from prefix by writing a '\0' in
4685 the while clause. */
4687 /* prefix has been terminated with a '\0' to the correct
4688 length. libpath points somewhere into the libdir SV.
4689 We need to join the 2 with '/' and drop the result into
4691 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4692 SvREFCNT_dec(libdir);
4693 /* And this is the new libdir. */
4696 (PerlProc_getuid() != PerlProc_geteuid() ||
4697 PerlProc_getgid() != PerlProc_getegid())) {
4698 /* Need to taint relocated paths if running set ID */
4699 SvTAINTED_on(libdir);
4702 SvREFCNT_dec(prefix_sv);
4710 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4712 #ifndef PERL_IS_MINIPERL
4713 const U8 using_sub_dirs
4714 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4715 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4716 const U8 add_versioned_sub_dirs
4717 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4718 const U8 add_archonly_sub_dirs
4719 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4720 #ifdef PERL_INC_VERSION_LIST
4721 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4724 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4725 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4726 AV *const inc = GvAVn(PL_incgv);
4728 PERL_ARGS_ASSERT_INCPUSH;
4731 /* Could remove this vestigial extra block, if we don't mind a lot of
4732 re-indenting diff noise. */
4734 SV *const libdir = mayberelocate(dir, len, flags);
4735 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4736 arranged to unshift #! line -I onto the front of @INC. However,
4737 -I can add version and architecture specific libraries, and they
4738 need to go first. The old code assumed that it was always
4739 pushing. Hence to make it work, need to push the architecture
4740 (etc) libraries onto a temporary array, then "unshift" that onto
4741 the front of @INC. */
4742 #ifndef PERL_IS_MINIPERL
4743 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4746 * BEFORE pushing libdir onto @INC we may first push version- and
4747 * archname-specific sub-directories.
4749 if (using_sub_dirs) {
4750 SV *subdir = newSVsv(libdir);
4751 #ifdef PERL_INC_VERSION_LIST
4752 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4753 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4754 const char * const *incver;
4757 if (add_versioned_sub_dirs) {
4758 /* .../version/archname if -d .../version/archname */
4759 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4760 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4762 /* .../version if -d .../version */
4763 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4764 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4767 #ifdef PERL_INC_VERSION_LIST
4769 for (incver = incverlist; *incver; incver++) {
4770 /* .../xxx if -d .../xxx */
4771 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4772 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4777 if (add_archonly_sub_dirs) {
4778 /* .../archname if -d .../archname */
4779 sv_catpvs(subdir, "/" ARCHNAME);
4780 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4784 assert (SvREFCNT(subdir) == 1);
4785 SvREFCNT_dec(subdir);
4787 #endif /* !PERL_IS_MINIPERL */
4788 /* finally add this lib directory at the end of @INC */
4790 #ifdef PERL_IS_MINIPERL
4791 const Size_t extra = 0;
4793 Size_t extra = av_tindex(av) + 1;
4795 av_unshift(inc, extra + push_basedir);
4797 av_store(inc, extra, libdir);
4798 #ifndef PERL_IS_MINIPERL
4800 /* av owns a reference, av_store() expects to be donated a
4801 reference, and av expects to be sane when it's cleared.
4802 If I wanted to be naughty and wrong, I could peek inside the
4803 implementation of av_clear(), realise that it uses
4804 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4805 and so directly steal from it (with a memcpy() to inc, and
4806 then memset() to NULL them out. But people copy code from the
4807 core expecting it to be best practise, so let's use the API.
4808 Although studious readers will note that I'm not checking any
4810 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4815 else if (push_basedir) {
4816 av_push(inc, libdir);
4819 if (!push_basedir) {
4820 assert (SvREFCNT(libdir) == 1);
4821 SvREFCNT_dec(libdir);
4827 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4831 /* This logic has been broken out from S_incpush(). It may be possible to
4834 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4836 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4837 * argument to incpush_use_sep. This allows creation of relocatable
4838 * Perl distributions that patch the binary at install time. Those
4839 * distributions will have to provide their own relocation tools; this
4840 * is not a feature otherwise supported by core Perl.
4842 #ifndef PERL_RELOCATABLE_INCPUSH
4849 /* Break at all separators */
4850 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4852 /* skip any consecutive separators */
4854 /* Uncomment the next line for PATH semantics */
4855 /* But you'll need to write tests */
4856 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4858 incpush(p, (STRLEN)(s - p), flags);
4863 incpush(p, (STRLEN)(end - p), flags);
4868 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4871 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4877 PERL_ARGS_ASSERT_CALL_LIST;
4879 while (av_tindex(paramList) >= 0) {
4880 cv = MUTABLE_CV(av_shift(paramList));
4882 if (paramList == PL_beginav) {
4883 /* save PL_beginav for compiler */
4884 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4886 else if (paramList == PL_checkav) {
4887 /* save PL_checkav for compiler */
4888 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4890 else if (paramList == PL_unitcheckav) {
4891 /* save PL_unitcheckav for compiler */
4892 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4902 (void)SvPV_const(atsv, len);
4904 PL_curcop = &PL_compiling;
4905 CopLINE_set(PL_curcop, oldline);
4906 if (paramList == PL_beginav)
4907 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4909 Perl_sv_catpvf(aTHX_ atsv,
4910 "%s failed--call queue aborted",
4911 paramList == PL_checkav ? "CHECK"
4912 : paramList == PL_initav ? "INIT"
4913 : paramList == PL_unitcheckav ? "UNITCHECK"
4915 while (PL_scopestack_ix > oldscope)
4918 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4925 /* my_exit() was called */
4926 while (PL_scopestack_ix > oldscope)
4929 SET_CURSTASH(PL_defstash);
4930 PL_curcop = &PL_compiling;
4931 CopLINE_set(PL_curcop, oldline);
4934 NOT_REACHED; /* NOTREACHED */
4937 PL_curcop = &PL_compiling;
4938 CopLINE_set(PL_curcop, oldline);
4941 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4950 Perl_my_exit(pTHX_ U32 status)
4952 if (PL_exit_flags & PERL_EXIT_ABORT) {
4955 if (PL_exit_flags & PERL_EXIT_WARN) {
4956 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4957 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
4958 PL_exit_flags &= ~PERL_EXIT_ABORT;
4968 STATUS_EXIT_SET(status);
4975 Perl_my_failure_exit(pTHX)
4978 /* We have been called to fall on our sword. The desired exit code
4979 * should be already set in STATUS_UNIX, but could be shifted over
4980 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4983 * If an error code has not been set, then force the issue.
4985 if (MY_POSIX_EXIT) {
4987 /* According to the die_exit.t tests, if errno is non-zero */
4988 /* It should be used for the error status. */
4990 if (errno == EVMSERR) {
4991 STATUS_NATIVE = vaxc$errno;
4994 /* According to die_exit.t tests, if the child_exit code is */
4995 /* also zero, then we need to exit with a code of 255 */
4996 if ((errno != 0) && (errno < 256))
4997 STATUS_UNIX_EXIT_SET(errno);
4998 else if (STATUS_UNIX < 255) {
4999 STATUS_UNIX_EXIT_SET(255);
5004 /* The exit code could have been set by $? or vmsish which
5005 * means that it may not have fatal set. So convert
5006 * success/warning codes to fatal with out changing
5007 * the POSIX status code. The severity makes VMS native
5008 * status handling work, while UNIX mode programs use the
5009 * the POSIX exit codes.
5011 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5012 STATUS_NATIVE &= STS$M_COND_ID;
5013 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5017 /* Traditionally Perl on VMS always expects a Fatal Error. */
5018 if (vaxc$errno & 1) {
5020 /* So force success status to failure */
5021 if (STATUS_NATIVE & 1)
5026 STATUS_UNIX = EINTR; /* In case something cares */
5031 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5033 /* Encode the severity code */
5034 severity = STATUS_NATIVE & STS$M_SEVERITY;
5035 STATUS_UNIX = (severity ? severity : 1) << 8;
5037 /* Perl expects this to be a fatal error */
5038 if (severity != STS$K_SEVERE)
5047 STATUS_UNIX_SET(errno);
5049 exitstatus = STATUS_UNIX >> 8;
5050 if (exitstatus & 255)
5051 STATUS_UNIX_SET(exitstatus);
5053 STATUS_UNIX_SET(255);
5056 if (PL_exit_flags & PERL_EXIT_ABORT) {
5059 if (PL_exit_flags & PERL_EXIT_WARN) {
5060 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5061 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5062 PL_exit_flags &= ~PERL_EXIT_ABORT;
5068 S_my_exit_jump(pTHX)
5071 SvREFCNT_dec(PL_e_script);
5075 POPSTACK_TO(PL_mainstack);
5083 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5085 const char * const p = SvPVX_const(PL_e_script);
5086 const char *nl = strchr(p, '\n');
5088 PERL_UNUSED_ARG(idx);
5089 PERL_UNUSED_ARG(maxlen);
5091 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5093 filter_del(read_e_script);
5096 sv_catpvn(buf_sv, p, nl-p);
5097 sv_chop(PL_e_script, nl);
5101 /* removes boilerplate code at the end of each boot_Module xsub */
5103 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5106 call_list(PL_scopestack_ix, PL_unitcheckav);
5111 * ex: set ts=8 sts=4 sw=4 et: