4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * 2013, 2014, 2015, 2016 by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
48 char control[CMSG_SPACE(sizeof(int))];
61 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
62 char *getenv (char *); /* Usually in <stdlib.h> */
65 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
67 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
68 # define validate_suid(rsfp) NOOP
70 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
73 #define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
79 #define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
84 S_init_tls_and_interp(PerlInterpreter *my_perl)
88 PERL_SET_INTERP(my_perl);
89 #if defined(USE_ITHREADS)
92 PERL_SET_THX(my_perl);
97 MUTEX_INIT(&PL_dollarzero_mutex);
98 MUTEX_INIT(&PL_my_ctx_mutex);
101 #if defined(USE_ITHREADS)
104 /* This always happens for non-ithreads */
107 PERL_SET_THX(my_perl);
112 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
115 Perl_sys_init(int* argc, char*** argv)
119 PERL_ARGS_ASSERT_SYS_INIT;
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
127 Perl_sys_init3(int* argc, char*** argv, char*** env)
131 PERL_ARGS_ASSERT_SYS_INIT3;
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
149 #ifdef PERL_IMPLICIT_SYS
151 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
157 PerlInterpreter *my_perl;
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161 /* Newx() needs interpreter, so call malloc() instead */
162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
163 S_init_tls_and_interp(my_perl);
164 Zero(my_perl, 1, PerlInterpreter);
174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
181 =head1 Embedding Functions
183 =for apidoc perl_alloc
185 Allocates a new Perl interpreter. See L<perlembed>.
193 PerlInterpreter *my_perl;
195 /* Newx() needs interpreter, so call malloc() instead */
196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
198 S_init_tls_and_interp(my_perl);
199 #ifndef PERL_TRACK_MEMPOOL
200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
207 #endif /* PERL_IMPLICIT_SYS */
210 =for apidoc perl_construct
212 Initializes a new Perl interpreter. See L<perlembed>.
218 S_fixup_platform_bugs(void)
220 #if defined(__GLIBC__) && IVSIZE == 8 \
221 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
225 /* Cannot do this check with inlined IV constants since
226 * that seems to work correctly even with the buggy glibc. */
229 /* Yikes, we have the bug.
230 * Patch in the workaround version. */
231 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
238 perl_construct(pTHXx)
242 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
246 PL_perl_destruct_level = 1;
248 PERL_UNUSED_ARG(my_perl);
249 if (PL_perl_destruct_level > 0)
252 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
254 #ifdef PERL_TRACE_OPS
255 Zero(PL_op_exec_cnt, OP_max+2, UV);
260 SvREADONLY_on(&PL_sv_placeholder);
261 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
263 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
264 #ifdef PERL_USES_PL_PIDSTATUS
265 PL_pidstatus = newHV();
268 PL_rs = newSVpvs("\n");
274 S_fixup_platform_bugs();
281 #if defined(LOCAL_PATCH_COUNT)
282 PL_localpatches = local_patches; /* For possible -v */
285 #ifdef HAVE_INTERP_INTERN
289 PerlIO_init(aTHX); /* Hook to IO system */
291 PL_fdpid = newAV(); /* for remembering popen pids by fd */
292 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
293 PL_errors = newSVpvs("");
294 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
295 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
296 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
298 /* First entry is a list of empty elements. It needs to be initialised
299 else all hell breaks loose in S_find_uninit_var(). */
300 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
301 PL_regex_pad = AvARRAY(PL_regex_padav);
302 Newxz(PL_stashpad, PL_stashpadmax, HV *);
304 #ifdef USE_REENTRANT_API
305 Perl_reentrant_init(aTHX);
307 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
308 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
309 * This MUST be done before any hash stores or fetches take place.
310 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
311 * yourself, it is your responsibility to provide a good random seed!
312 * You can also define PERL_HASH_SEED in compile time, see hv.h.
314 * XXX: fix this comment */
315 if (PL_hash_seed_set == FALSE) {
316 Perl_get_hash_seed(aTHX_ PL_hash_seed);
317 PL_hash_seed_set= TRUE;
319 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
321 /* Note that strtab is a rather special HV. Assumptions are made
322 about not iterating on it, and not adding tie magic to it.
323 It is properly deallocated in perl_destruct() */
326 HvSHAREKEYS_off(PL_strtab); /* mandatory */
327 hv_ksplit(PL_strtab, 512);
329 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
332 # ifdef USE_ENVIRON_ARRAY
333 PL_origenviron = environ;
337 /* Use sysconf(_SC_CLK_TCK) if available, if not
338 * available or if the sysconf() fails, use the HZ.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
341 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
347 PL_stashcache = newHV();
349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
352 if (!PL_mmap_page_size) {
353 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 SETERRNO(0, SS_NORMAL);
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361 if ((long) PL_mmap_page_size < 0) {
363 SV * const error = ERRSV;
364 SvUPGRADE(error, SVt_PV);
365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
372 # ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
375 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
384 #endif /* HAS_MMAP */
386 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395 PL_registered_mros = newHV();
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
399 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
400 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
401 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
402 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
403 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
404 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
405 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
406 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
407 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
408 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
409 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
410 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
411 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
412 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
413 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
414 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
415 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
416 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
417 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
418 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
424 =for apidoc nothreadhook
426 Stub that provides thread hook for perl_destruct when there are
433 Perl_nothreadhook(pTHX)
439 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
441 Perl_dump_sv_child(pTHX_ SV *sv)
444 const int sock = PL_dumper_fd;
445 const int debug_fd = PerlIO_fileno(Perl_debug_log);
446 union control_un control;
449 struct cmsghdr *cmptr;
451 unsigned char buffer[256];
453 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
455 if(sock == -1 || debug_fd == -1)
458 PerlIO_flush(Perl_debug_log);
460 /* All these shenanigans are to pass a file descriptor over to our child for
461 it to dump out to. We can't let it hold open the file descriptor when it
462 forks, as the file descriptor it will dump to can turn out to be one end
463 of pipe that some other process will wait on for EOF. (So as it would
464 be open, the wait would be forever.) */
466 msg.msg_control = control.control;
467 msg.msg_controllen = sizeof(control.control);
468 /* We're a connected socket so we don't need a destination */
474 cmptr = CMSG_FIRSTHDR(&msg);
475 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
476 cmptr->cmsg_level = SOL_SOCKET;
477 cmptr->cmsg_type = SCM_RIGHTS;
478 *((int *)CMSG_DATA(cmptr)) = 1;
480 vec[0].iov_base = (void*)&sv;
481 vec[0].iov_len = sizeof(sv);
482 got = sendmsg(sock, &msg, 0);
485 perror("Debug leaking scalars parent sendmsg failed");
488 if(got < sizeof(sv)) {
489 perror("Debug leaking scalars parent short sendmsg");
493 /* Return protocol is
495 unsigned char: length of location string (0 for empty)
496 unsigned char*: string (not terminated)
498 vec[0].iov_base = (void*)&returned_errno;
499 vec[0].iov_len = sizeof(returned_errno);
500 vec[1].iov_base = buffer;
503 got = readv(sock, vec, 2);
506 perror("Debug leaking scalars parent read failed");
507 PerlIO_flush(PerlIO_stderr());
510 if(got < sizeof(returned_errno) + 1) {
511 perror("Debug leaking scalars parent short read");
512 PerlIO_flush(PerlIO_stderr());
517 got = read(sock, buffer + 1, *buffer);
519 perror("Debug leaking scalars parent read 2 failed");
520 PerlIO_flush(PerlIO_stderr());
525 perror("Debug leaking scalars parent short read 2");
526 PerlIO_flush(PerlIO_stderr());
531 if (returned_errno || *buffer) {
532 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
533 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
534 returned_errno, Strerror(returned_errno));
540 =for apidoc perl_destruct
542 Shuts down a Perl interpreter. See L<perlembed>.
551 VOL signed char destruct_level; /* see possible values in intrpvar.h */
553 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
558 PERL_ARGS_ASSERT_PERL_DESTRUCT;
560 PERL_UNUSED_ARG(my_perl);
563 assert(PL_scopestack_ix == 1);
565 /* wait for all pseudo-forked children to finish */
566 PERL_WAIT_FOR_CHILDREN;
568 destruct_level = PL_perl_destruct_level;
569 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
571 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
574 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
578 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
584 if (destruct_level < i) destruct_level = i;
586 #ifdef PERL_TRACK_MEMPOOL
587 /* RT #114496, for perl_free */
588 PL_perl_destruct_level = i;
594 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
600 if (PL_endav && !PL_minus_c) {
601 PERL_SET_PHASE(PERL_PHASE_END);
602 call_list(PL_scopestack_ix, PL_endav);
608 assert(PL_scopestack_ix == 0);
610 /* Need to flush since END blocks can produce output */
611 /* flush stdout separately, since we can identify it */
614 PerlIO *stdo = PerlIO_stdout();
615 if (*stdo && PerlIO_flush(stdo)) {
616 PerlIO_restore_errno(stdo);
617 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
626 #ifdef PERL_TRACE_OPS
627 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
629 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
632 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
636 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
637 for (i = 0; i <= OP_max; ++i) {
638 if (PL_op_exec_cnt[i])
639 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
641 /* Utility slot for easily doing little tracing experiments in the runloop: */
642 if (PL_op_exec_cnt[OP_max+1] != 0)
643 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
644 PerlIO_printf(Perl_debug_log, "\n");
649 if (PL_threadhook(aTHX)) {
650 /* Threads hook has vetoed further cleanup */
651 PL_veto_cleanup = TRUE;
655 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
656 if (destruct_level != 0) {
657 /* Fork here to create a child. Our child's job is to preserve the
658 state of scalars prior to destruction, so that we can instruct it
659 to dump any scalars that we later find have leaked.
660 There's no subtlety in this code - it assumes POSIX, and it doesn't
664 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
665 perror("Debug leaking scalars socketpair failed");
671 perror("Debug leaking scalars fork failed");
675 /* We are the child */
676 const int sock = fd[1];
677 const int debug_fd = PerlIO_fileno(Perl_debug_log);
680 /* Our success message is an integer 0, and a char 0 */
681 static const char success[sizeof(int) + 1] = {0};
685 /* We need to close all other file descriptors otherwise we end up
686 with interesting hangs, where the parent closes its end of a
687 pipe, and sits waiting for (another) child to terminate. Only
688 that child never terminates, because it never gets EOF, because
689 we also have the far end of the pipe open. We even need to
690 close the debugging fd, because sometimes it happens to be one
691 end of a pipe, and a process is waiting on the other end for
692 EOF. Normally it would be closed at some point earlier in
693 destruction, but if we happen to cause the pipe to remain open,
694 EOF never occurs, and we get an infinite hang. Hence all the
695 games to pass in a file descriptor if it's actually needed. */
697 f = sysconf(_SC_OPEN_MAX);
699 where = "sysconf failed";
710 union control_un control;
713 struct cmsghdr *cmptr;
717 msg.msg_control = control.control;
718 msg.msg_controllen = sizeof(control.control);
719 /* We're a connected socket so we don't need a source */
723 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
725 vec[0].iov_base = (void*)⌖
726 vec[0].iov_len = sizeof(target);
728 got = recvmsg(sock, &msg, 0);
733 where = "recv failed";
736 if(got < sizeof(target)) {
737 where = "short recv";
741 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
745 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
746 where = "wrong cmsg_len";
749 if(cmptr->cmsg_level != SOL_SOCKET) {
750 where = "wrong cmsg_level";
753 if(cmptr->cmsg_type != SCM_RIGHTS) {
754 where = "wrong cmsg_type";
758 got_fd = *(int*)CMSG_DATA(cmptr);
759 /* For our last little bit of trickery, put the file descriptor
760 back into Perl_debug_log, as if we never actually closed it
762 if(got_fd != debug_fd) {
763 if (dup2(got_fd, debug_fd) == -1) {
770 PerlIO_flush(Perl_debug_log);
772 got = write(sock, &success, sizeof(success));
775 where = "write failed";
778 if(got < sizeof(success)) {
779 where = "short write";
786 int send_errno = errno;
787 unsigned char length = (unsigned char) strlen(where);
788 struct iovec failure[3] = {
789 {(void*)&send_errno, sizeof(send_errno)},
791 {(void*)where, length}
793 int got = writev(sock, failure, 3);
794 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
795 in the parent if we try to read from the socketpair after the
796 child has exited, even if there was data to read.
797 So sleep a bit to give the parent a fighting chance of
800 _exit((got == -1) ? errno : 0);
804 PL_dumper_fd = fd[0];
809 /* We must account for everything. */
811 /* Destroy the main CV and syntax tree */
812 /* Set PL_curcop now, because destroying ops can cause new SVs
813 to be generated in Perl_pad_swipe, and when running with
814 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
815 op from which the filename structure member is copied. */
816 PL_curcop = &PL_compiling;
818 /* ensure comppad/curpad to refer to main's pad */
819 if (CvPADLIST(PL_main_cv)) {
820 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
821 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
823 op_free(PL_main_root);
826 PL_main_start = NULL;
827 /* note that PL_main_cv isn't usually actually freed at this point,
828 * due to the CvOUTSIDE refs from subs compiled within it. It will
829 * get freed once all the subs are freed in sv_clean_all(), for
830 * destruct_level > 0 */
831 SvREFCNT_dec(PL_main_cv);
833 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
835 /* Tell PerlIO we are about to tear things apart in case
836 we have layers which are using resources that should
840 PerlIO_destruct(aTHX);
843 * Try to destruct global references. We do this first so that the
844 * destructors and destructees still exist. Some sv's might remain.
845 * Non-referenced objects are on their own.
849 /* unhook hooks which will soon be, or use, destroyed data */
850 SvREFCNT_dec(PL_warnhook);
852 SvREFCNT_dec(PL_diehook);
855 /* call exit list functions */
856 while (PL_exitlistlen-- > 0)
857 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
859 Safefree(PL_exitlist);
864 SvREFCNT_dec(PL_registered_mros);
866 /* jettison our possibly duplicated environment */
867 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
868 * so we certainly shouldn't free it here
871 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
872 if (environ != PL_origenviron && !PL_use_safe_putenv
874 /* only main thread can free environ[0] contents */
875 && PL_curinterp == aTHX
881 for (i = 0; environ[i]; i++)
882 safesysfree(environ[i]);
884 /* Must use safesysfree() when working with environ. */
885 safesysfree(environ);
887 environ = PL_origenviron;
890 #endif /* !PERL_MICRO */
892 if (destruct_level == 0) {
894 DEBUG_P(debprofdump());
896 #if defined(PERLIO_LAYERS)
897 /* No more IO - including error messages ! */
898 PerlIO_cleanup(aTHX);
901 CopFILE_free(&PL_compiling);
903 /* The exit() function will do everything that needs doing. */
907 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
910 /* the syntax tree is shared between clones
911 * so op_free(PL_main_root) only ReREFCNT_dec's
912 * REGEXPs in the parent interpreter
913 * we need to manually ReREFCNT_dec for the clones
916 I32 i = AvFILLp(PL_regex_padav);
917 SV **ary = AvARRAY(PL_regex_padav);
920 SvREFCNT_dec(ary[i]);
921 ary[i] = &PL_sv_undef;
927 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
928 PL_stashcache = NULL;
930 /* loosen bonds of global variables */
932 /* XXX can PL_parser still be non-null here? */
933 if(PL_parser && PL_parser->rsfp) {
934 (void)PerlIO_close(PL_parser->rsfp);
935 PL_parser->rsfp = NULL;
939 Safefree(PL_splitstr);
949 PL_doswitches = FALSE;
950 PL_dowarn = G_WARN_OFF;
951 #ifdef PERL_SAWAMPERSAND
952 PL_sawampersand = 0; /* must save all match strings */
956 Safefree(PL_inplace);
958 SvREFCNT_dec(PL_patchlevel);
961 SvREFCNT_dec(PL_e_script);
967 /* magical thingies */
969 SvREFCNT_dec(PL_ofsgv); /* *, */
972 SvREFCNT_dec(PL_ors_sv); /* $\ */
975 SvREFCNT_dec(PL_rs); /* $/ */
978 Safefree(PL_osname); /* $^O */
981 SvREFCNT_dec(PL_statname);
985 /* defgv, aka *_ should be taken care of elsewhere */
988 Safefree(PL_efloatbuf);
992 /* startup and shutdown function lists */
993 SvREFCNT_dec(PL_beginav);
994 SvREFCNT_dec(PL_beginav_save);
995 SvREFCNT_dec(PL_endav);
996 SvREFCNT_dec(PL_checkav);
997 SvREFCNT_dec(PL_checkav_save);
998 SvREFCNT_dec(PL_unitcheckav);
999 SvREFCNT_dec(PL_unitcheckav_save);
1000 SvREFCNT_dec(PL_initav);
1002 PL_beginav_save = NULL;
1005 PL_checkav_save = NULL;
1006 PL_unitcheckav = NULL;
1007 PL_unitcheckav_save = NULL;
1010 /* shortcuts just get cleared */
1013 PL_argvoutgv = NULL;
1016 PL_last_in_gv = NULL;
1027 SvREFCNT_dec(PL_envgv);
1028 SvREFCNT_dec(PL_incgv);
1029 SvREFCNT_dec(PL_argvgv);
1030 SvREFCNT_dec(PL_replgv);
1031 SvREFCNT_dec(PL_DBgv);
1032 SvREFCNT_dec(PL_DBline);
1033 SvREFCNT_dec(PL_DBsub);
1042 SvREFCNT_dec(PL_argvout_stack);
1043 PL_argvout_stack = NULL;
1045 SvREFCNT_dec(PL_modglobal);
1046 PL_modglobal = NULL;
1047 SvREFCNT_dec(PL_preambleav);
1048 PL_preambleav = NULL;
1049 SvREFCNT_dec(PL_subname);
1051 #ifdef PERL_USES_PL_PIDSTATUS
1052 SvREFCNT_dec(PL_pidstatus);
1053 PL_pidstatus = NULL;
1055 SvREFCNT_dec(PL_toptarget);
1056 PL_toptarget = NULL;
1057 SvREFCNT_dec(PL_bodytarget);
1058 PL_bodytarget = NULL;
1059 PL_formtarget = NULL;
1061 /* free locale stuff */
1062 #ifdef USE_LOCALE_COLLATE
1063 Safefree(PL_collation_name);
1064 PL_collation_name = NULL;
1067 #ifdef USE_LOCALE_NUMERIC
1068 Safefree(PL_numeric_name);
1069 PL_numeric_name = NULL;
1070 SvREFCNT_dec(PL_numeric_radix_sv);
1071 PL_numeric_radix_sv = NULL;
1074 /* clear character classes */
1075 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1076 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1077 PL_utf8_swash_ptrs[i] = NULL;
1079 SvREFCNT_dec(PL_utf8_mark);
1080 SvREFCNT_dec(PL_utf8_toupper);
1081 SvREFCNT_dec(PL_utf8_totitle);
1082 SvREFCNT_dec(PL_utf8_tolower);
1083 SvREFCNT_dec(PL_utf8_tofold);
1084 SvREFCNT_dec(PL_utf8_idstart);
1085 SvREFCNT_dec(PL_utf8_idcont);
1086 SvREFCNT_dec(PL_utf8_foldable);
1087 SvREFCNT_dec(PL_utf8_foldclosures);
1088 SvREFCNT_dec(PL_AboveLatin1);
1089 SvREFCNT_dec(PL_InBitmap);
1090 SvREFCNT_dec(PL_UpperLatin1);
1091 SvREFCNT_dec(PL_Latin1);
1092 SvREFCNT_dec(PL_NonL1NonFinalFold);
1093 SvREFCNT_dec(PL_HasMultiCharFold);
1094 #ifdef USE_LOCALE_CTYPE
1095 SvREFCNT_dec(PL_warn_locale);
1097 PL_utf8_mark = NULL;
1098 PL_utf8_toupper = NULL;
1099 PL_utf8_totitle = NULL;
1100 PL_utf8_tolower = NULL;
1101 PL_utf8_tofold = NULL;
1102 PL_utf8_idstart = NULL;
1103 PL_utf8_idcont = NULL;
1104 PL_utf8_foldclosures = NULL;
1105 PL_AboveLatin1 = NULL;
1107 PL_HasMultiCharFold = NULL;
1108 #ifdef USE_LOCALE_CTYPE
1109 PL_warn_locale = NULL;
1112 PL_NonL1NonFinalFold = NULL;
1113 PL_UpperLatin1 = NULL;
1114 for (i = 0; i < POSIX_CC_COUNT; i++) {
1115 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1116 PL_XPosix_ptrs[i] = NULL;
1118 PL_GCB_invlist = NULL;
1119 PL_LB_invlist = NULL;
1120 PL_SB_invlist = NULL;
1121 PL_WB_invlist = NULL;
1123 if (!specialWARN(PL_compiling.cop_warnings))
1124 PerlMemShared_free(PL_compiling.cop_warnings);
1125 PL_compiling.cop_warnings = NULL;
1126 cophh_free(CopHINTHASH_get(&PL_compiling));
1127 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1128 CopFILE_free(&PL_compiling);
1130 /* Prepare to destruct main symbol table. */
1133 /* break ref loop *:: <=> %:: */
1134 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1137 SvREFCNT_dec(PL_curstname);
1138 PL_curstname = NULL;
1140 /* clear queued errors */
1141 SvREFCNT_dec(PL_errors);
1144 SvREFCNT_dec(PL_isarev);
1147 if (destruct_level >= 2) {
1148 if (PL_scopestack_ix != 0)
1149 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1150 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1151 (long)PL_scopestack_ix);
1152 if (PL_savestack_ix != 0)
1153 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1154 "Unbalanced saves: %ld more saves than restores\n",
1155 (long)PL_savestack_ix);
1156 if (PL_tmps_floor != -1)
1157 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1158 (long)PL_tmps_floor + 1);
1159 if (cxstack_ix != -1)
1160 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1161 (long)cxstack_ix + 1);
1165 SvREFCNT_dec(PL_regex_padav);
1166 PL_regex_padav = NULL;
1167 PL_regex_pad = NULL;
1170 #ifdef PERL_IMPLICIT_CONTEXT
1171 /* the entries in this list are allocated via SV PVX's, so get freed
1172 * in sv_clean_all */
1173 Safefree(PL_my_cxt_list);
1176 /* Now absolutely destruct everything, somehow or other, loops or no. */
1178 /* the 2 is for PL_fdpid and PL_strtab */
1179 while (sv_clean_all() > 2)
1183 Safefree(PL_stashpad); /* must come after sv_clean_all */
1186 AvREAL_off(PL_fdpid); /* no surviving entries */
1187 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1190 #ifdef HAVE_INTERP_INTERN
1194 /* constant strings */
1195 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1196 SvREFCNT_dec(PL_sv_consts[i]);
1197 PL_sv_consts[i] = NULL;
1200 /* Destruct the global string table. */
1202 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1203 * so that sv_free() won't fail on them.
1204 * Now that the global string table is using a single hunk of memory
1205 * for both HE and HEK, we either need to explicitly unshare it the
1206 * correct way, or actually free things here.
1209 const I32 max = HvMAX(PL_strtab);
1210 HE * const * const array = HvARRAY(PL_strtab);
1211 HE *hent = array[0];
1214 if (hent && ckWARN_d(WARN_INTERNAL)) {
1215 HE * const next = HeNEXT(hent);
1216 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1217 "Unbalanced string table refcount: (%ld) for \"%s\"",
1218 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1225 hent = array[riter];
1230 HvARRAY(PL_strtab) = 0;
1231 HvTOTALKEYS(PL_strtab) = 0;
1233 SvREFCNT_dec(PL_strtab);
1236 /* free the pointer tables used for cloning */
1237 ptr_table_free(PL_ptr_table);
1238 PL_ptr_table = (PTR_TBL_t*)NULL;
1241 /* free special SVs */
1243 SvREFCNT(&PL_sv_yes) = 0;
1244 sv_clear(&PL_sv_yes);
1245 SvANY(&PL_sv_yes) = NULL;
1246 SvFLAGS(&PL_sv_yes) = 0;
1248 SvREFCNT(&PL_sv_no) = 0;
1249 sv_clear(&PL_sv_no);
1250 SvANY(&PL_sv_no) = NULL;
1251 SvFLAGS(&PL_sv_no) = 0;
1255 for (i=0; i<=2; i++) {
1256 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1257 sv_clear(PERL_DEBUG_PAD(i));
1258 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1259 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1263 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1264 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1266 #ifdef DEBUG_LEAKING_SCALARS
1267 if (PL_sv_count != 0) {
1272 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1273 svend = &sva[SvREFCNT(sva)];
1274 for (sv = sva + 1; sv < svend; ++sv) {
1275 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1276 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1278 " refcnt=%"UVuf pTHX__FORMAT "\n"
1279 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1281 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1283 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1285 sv->sv_debug_inpad ? "for" : "by",
1286 sv->sv_debug_optype ?
1287 PL_op_name[sv->sv_debug_optype]: "(none)",
1288 PTR2UV(sv->sv_debug_parent),
1291 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1292 Perl_dump_sv_child(aTHX_ sv);
1298 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1302 /* Wait for up to 4 seconds for child to terminate.
1303 This seems to be the least effort way of timing out on reaping
1305 struct timeval waitfor = {4, 0};
1306 int sock = PL_dumper_fd;
1310 FD_SET(sock, &rset);
1311 select(sock + 1, &rset, NULL, NULL, &waitfor);
1312 waitpid(child, &status, WNOHANG);
1317 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1323 #if defined(PERLIO_LAYERS)
1324 /* No more IO - including error messages ! */
1325 PerlIO_cleanup(aTHX);
1328 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1329 as currently layers use it rather than NULL as a marker
1330 for no arg - and will try and SvREFCNT_dec it.
1332 SvREFCNT(&PL_sv_undef) = 0;
1333 SvREADONLY_off(&PL_sv_undef);
1335 Safefree(PL_origfilename);
1336 PL_origfilename = NULL;
1337 Safefree(PL_reg_curpm);
1338 free_tied_hv_pool();
1339 Safefree(PL_op_mask);
1340 Safefree(PL_psig_name);
1341 PL_psig_name = (SV**)NULL;
1342 PL_psig_ptr = (SV**)NULL;
1344 /* We need to NULL PL_psig_pend first, so that
1345 signal handlers know not to use it */
1346 int *psig_save = PL_psig_pend;
1347 PL_psig_pend = (int*)NULL;
1348 Safefree(psig_save);
1351 TAINTING_set(FALSE);
1352 TAINT_WARN_set(FALSE);
1353 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1355 DEBUG_P(debprofdump());
1359 #ifdef USE_REENTRANT_API
1360 Perl_reentrant_free(aTHX);
1363 /* These all point to HVs that are about to be blown away.
1364 Code in core and on CPAN assumes that if the interpreter is re-started
1365 that they will be cleanly NULL or pointing to a valid HV. */
1366 PL_custom_op_names = NULL;
1367 PL_custom_op_descs = NULL;
1368 PL_custom_ops = NULL;
1372 while (PL_regmatch_slab) {
1373 regmatch_slab *s = PL_regmatch_slab;
1374 PL_regmatch_slab = PL_regmatch_slab->next;
1378 /* As the absolutely last thing, free the non-arena SV for mess() */
1381 /* we know that type == SVt_PVMG */
1383 /* it could have accumulated taint magic */
1386 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1387 moremagic = mg->mg_moremagic;
1388 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1390 Safefree(mg->mg_ptr);
1394 /* we know that type >= SVt_PV */
1395 SvPV_free(PL_mess_sv);
1396 Safefree(SvANY(PL_mess_sv));
1397 Safefree(PL_mess_sv);
1404 =for apidoc perl_free
1406 Releases a Perl interpreter. See L<perlembed>.
1416 PERL_ARGS_ASSERT_PERL_FREE;
1418 if (PL_veto_cleanup)
1421 #ifdef PERL_TRACK_MEMPOOL
1424 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1425 * value as we're probably hunting memory leaks then
1427 if (PL_perl_destruct_level == 0) {
1428 const U32 old_debug = PL_debug;
1429 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1430 thread at thread exit. */
1432 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1433 "free this thread's memory\n");
1434 PL_debug &= ~ DEBUG_m_FLAG;
1436 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1437 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1438 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1441 PL_debug = old_debug;
1446 #if defined(WIN32) || defined(NETWARE)
1447 # if defined(PERL_IMPLICIT_SYS)
1450 void *host = nw_internal_host;
1451 PerlMem_free(aTHXx);
1452 nw_delete_internal_host(host);
1454 void *host = w32_internal_host;
1455 PerlMem_free(aTHXx);
1456 win32_delete_internal_host(host);
1460 PerlMem_free(aTHXx);
1463 PerlMem_free(aTHXx);
1467 #if defined(USE_ITHREADS)
1468 /* provide destructors to clean up the thread key when libperl is unloaded */
1469 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1471 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1472 #pragma fini "perl_fini"
1473 #elif defined(__sun) && !defined(__GNUC__)
1474 #pragma fini (perl_fini)
1478 #if defined(__GNUC__)
1479 __attribute__((destructor))
1485 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1488 PL_curinterp && !PL_veto_cleanup)
1493 #endif /* THREADS */
1496 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1498 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1499 PL_exitlist[PL_exitlistlen].fn = fn;
1500 PL_exitlist[PL_exitlistlen].ptr = ptr;
1505 =for apidoc perl_parse
1507 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1512 #define SET_CURSTASH(newstash) \
1513 if (PL_curstash != newstash) { \
1514 SvREFCNT_dec(PL_curstash); \
1515 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1519 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1526 PERL_ARGS_ASSERT_PERL_PARSE;
1527 #ifndef MULTIPLICITY
1528 PERL_UNUSED_ARG(my_perl);
1530 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1532 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1534 if (s && strEQ(s, "1")) {
1535 const unsigned char *seed= PERL_HASH_SEED;
1536 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1537 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1538 while (seed < seed_end) {
1539 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1541 #ifdef PERL_HASH_RANDOMIZE_KEYS
1542 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1543 PL_HASH_RAND_BITS_ENABLED,
1544 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1546 PerlIO_printf(Perl_debug_log, "\n");
1549 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1553 struct NameTranslationInfo nti;
1554 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1561 if (PL_origalen != 0) {
1562 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1565 /* Set PL_origalen be the sum of the contiguous argv[]
1566 * elements plus the size of the env in case that it is
1567 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1568 * as the maximum modifiable length of $0. In the worst case
1569 * the area we are able to modify is limited to the size of
1570 * the original argv[0]. (See below for 'contiguous', though.)
1572 const char *s = NULL;
1574 const UV mask = ~(UV)(PTRSIZE-1);
1575 /* Do the mask check only if the args seem like aligned. */
1577 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1579 /* See if all the arguments are contiguous in memory. Note
1580 * that 'contiguous' is a loose term because some platforms
1581 * align the argv[] and the envp[]. If the arguments look
1582 * like non-aligned, assume that they are 'strictly' or
1583 * 'traditionally' contiguous. If the arguments look like
1584 * aligned, we just check that they are within aligned
1585 * PTRSIZE bytes. As long as no system has something bizarre
1586 * like the argv[] interleaved with some other data, we are
1587 * fine. (Did I just evoke Murphy's Law?) --jhi */
1588 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1590 for (i = 1; i < PL_origargc; i++) {
1591 if ((PL_origargv[i] == s + 1
1593 || PL_origargv[i] == s + 2
1598 (PL_origargv[i] > s &&
1600 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1611 #ifndef PERL_USE_SAFE_PUTENV
1612 /* Can we grab env area too to be used as the area for $0? */
1613 if (s && PL_origenviron && !PL_use_safe_putenv) {
1614 if ((PL_origenviron[0] == s + 1)
1617 (PL_origenviron[0] > s &&
1618 PL_origenviron[0] <=
1619 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1622 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1623 s = PL_origenviron[0];
1626 my_setenv("NoNe SuCh", NULL);
1627 /* Force copy of environment. */
1628 for (i = 1; PL_origenviron[i]; i++) {
1629 if (PL_origenviron[i] == s + 1
1632 (PL_origenviron[i] > s &&
1633 PL_origenviron[i] <=
1634 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1637 s = PL_origenviron[i];
1645 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1647 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1652 /* Come here if running an undumped a.out. */
1654 PL_origfilename = savepv(argv[0]);
1655 PL_do_undump = FALSE;
1656 cxstack_ix = -1; /* start label stack again */
1658 assert (!TAINT_get);
1662 init_postdump_symbols(argc,argv,env);
1667 op_free(PL_main_root);
1668 PL_main_root = NULL;
1670 PL_main_start = NULL;
1671 SvREFCNT_dec(PL_main_cv);
1675 oldscope = PL_scopestack_ix;
1676 PL_dowarn = G_WARN_OFF;
1681 parse_body(env,xsinit);
1682 if (PL_unitcheckav) {
1683 call_list(oldscope, PL_unitcheckav);
1686 PERL_SET_PHASE(PERL_PHASE_CHECK);
1687 call_list(oldscope, PL_checkav);
1695 /* my_exit() was called */
1696 while (PL_scopestack_ix > oldscope)
1699 SET_CURSTASH(PL_defstash);
1700 if (PL_unitcheckav) {
1701 call_list(oldscope, PL_unitcheckav);
1704 PERL_SET_PHASE(PERL_PHASE_CHECK);
1705 call_list(oldscope, PL_checkav);
1710 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1718 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1719 miniperl, and we need to see those flags reflected in the values here. */
1721 /* What this returns is subject to change. Use the public interface in Config.
1724 S_Internals_V(pTHX_ CV *cv)
1727 #ifdef LOCAL_PATCH_COUNT
1728 const int local_patch_count = LOCAL_PATCH_COUNT;
1730 const int local_patch_count = 0;
1732 const int entries = 3 + local_patch_count;
1734 static const char non_bincompat_options[] =
1741 # ifdef NO_HASH_SEED
1744 # ifdef NO_TAINT_SUPPORT
1747 # ifdef PERL_BOOL_AS_CHAR
1748 " PERL_BOOL_AS_CHAR"
1750 # ifdef PERL_COPY_ON_WRITE
1751 " PERL_COPY_ON_WRITE"
1753 # ifdef PERL_DISABLE_PMC
1756 # ifdef PERL_DONT_CREATE_GVSV
1757 " PERL_DONT_CREATE_GVSV"
1759 # ifdef PERL_EXTERNAL_GLOB
1760 " PERL_EXTERNAL_GLOB"
1762 # ifdef PERL_HASH_FUNC_SIPHASH
1763 " PERL_HASH_FUNC_SIPHASH"
1765 # ifdef PERL_HASH_FUNC_SDBM
1766 " PERL_HASH_FUNC_SDBM"
1768 # ifdef PERL_HASH_FUNC_DJB2
1769 " PERL_HASH_FUNC_DJB2"
1771 # ifdef PERL_HASH_FUNC_SUPERFAST
1772 " PERL_HASH_FUNC_SUPERFAST"
1774 # ifdef PERL_HASH_FUNC_MURMUR3
1775 " PERL_HASH_FUNC_MURMUR3"
1777 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1778 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1780 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1781 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1783 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1784 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1786 # ifdef PERL_IS_MINIPERL
1789 # ifdef PERL_MALLOC_WRAP
1792 # ifdef PERL_MEM_LOG
1795 # ifdef PERL_MEM_LOG_NOIMPL
1796 " PERL_MEM_LOG_NOIMPL"
1798 # ifdef PERL_OP_PARENT
1801 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1802 " PERL_PERTURB_KEYS_DETERMINISTIC"
1804 # ifdef PERL_PERTURB_KEYS_DISABLED
1805 " PERL_PERTURB_KEYS_DISABLED"
1807 # ifdef PERL_PERTURB_KEYS_RANDOM
1808 " PERL_PERTURB_KEYS_RANDOM"
1810 # ifdef PERL_PRESERVE_IVUV
1811 " PERL_PRESERVE_IVUV"
1813 # ifdef PERL_RELOCATABLE_INCPUSH
1814 " PERL_RELOCATABLE_INCPUSH"
1816 # ifdef PERL_USE_DEVEL
1819 # ifdef PERL_USE_SAFE_PUTENV
1820 " PERL_USE_SAFE_PUTENV"
1822 # ifdef SILENT_NO_TAINT_SUPPORT
1823 " SILENT_NO_TAINT_SUPPORT"
1825 # ifdef UNLINK_ALL_VERSIONS
1826 " UNLINK_ALL_VERSIONS"
1828 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1829 " USE_ATTRIBUTES_FOR_PERLIO"
1831 # ifdef USE_FAST_STDIO
1834 # ifdef USE_HASH_SEED_EXPLICIT
1835 " USE_HASH_SEED_EXPLICIT"
1840 # ifdef USE_LOCALE_CTYPE
1843 # ifdef WIN32_NO_REGISTRY
1846 # ifdef USE_PERL_ATOF
1849 # ifdef USE_SITECUSTOMIZE
1850 " USE_SITECUSTOMIZE"
1853 PERL_UNUSED_ARG(cv);
1854 PERL_UNUSED_VAR(items);
1856 EXTEND(SP, entries);
1858 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1859 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1860 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1862 #ifndef PERL_BUILD_DATE
1865 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1867 # define PERL_BUILD_DATE __DATE__
1872 #ifdef PERL_BUILD_DATE
1873 PUSHs(Perl_newSVpvn_flags(aTHX_
1874 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1877 PUSHs(&PL_sv_undef);
1880 for (i = 1; i <= local_patch_count; i++) {
1881 /* This will be an undef, if PL_localpatches[i] is NULL. */
1882 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1888 #define INCPUSH_UNSHIFT 0x01
1889 #define INCPUSH_ADD_OLD_VERS 0x02
1890 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1891 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1892 #define INCPUSH_NOT_BASEDIR 0x10
1893 #define INCPUSH_CAN_RELOCATE 0x20
1894 #define INCPUSH_ADD_SUB_DIRS \
1895 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1898 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1902 int argc = PL_origargc;
1903 char **argv = PL_origargv;
1904 const char *scriptname = NULL;
1905 bool dosearch = FALSE;
1907 bool doextract = FALSE;
1908 const char *cddir = NULL;
1909 #ifdef USE_SITECUSTOMIZE
1910 bool minus_f = FALSE;
1912 SV *linestr_sv = NULL;
1913 bool add_read_e_script = FALSE;
1914 U32 lex_start_flags = 0;
1916 PERL_SET_PHASE(PERL_PHASE_START);
1922 for (argc--,argv++; argc > 0; argc--,argv++) {
1923 if (argv[0][0] != '-' || !argv[0][1])
1929 #ifndef PERL_STRICT_CR
1953 if ((s = moreswitches(s)))
1958 #if defined(SILENT_NO_TAINT_SUPPORT)
1959 /* silently ignore */
1960 #elif defined(NO_TAINT_SUPPORT)
1961 Perl_croak_nocontext("This perl was compiled without taint support. "
1962 "Cowardly refusing to run with -t or -T flags");
1964 CHECK_MALLOC_TOO_LATE_FOR('t');
1965 if( !TAINTING_get ) {
1966 TAINT_WARN_set(TRUE);
1973 #if defined(SILENT_NO_TAINT_SUPPORT)
1974 /* silently ignore */
1975 #elif defined(NO_TAINT_SUPPORT)
1976 Perl_croak_nocontext("This perl was compiled without taint support. "
1977 "Cowardly refusing to run with -t or -T flags");
1979 CHECK_MALLOC_TOO_LATE_FOR('T');
1981 TAINT_WARN_set(FALSE);
1990 forbid_setid('e', FALSE);
1992 PL_e_script = newSVpvs("");
1993 add_read_e_script = TRUE;
1996 sv_catpv(PL_e_script, s);
1998 sv_catpv(PL_e_script, argv[1]);
2002 Perl_croak(aTHX_ "No code specified for -%c", c);
2003 sv_catpvs(PL_e_script, "\n");
2007 #ifdef USE_SITECUSTOMIZE
2013 case 'I': /* -I handled both here and in moreswitches() */
2014 forbid_setid('I', FALSE);
2015 if (!*++s && (s=argv[1]) != NULL) {
2019 STRLEN len = strlen(s);
2020 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
2023 Perl_croak(aTHX_ "No directory specified for -I");
2026 forbid_setid('S', FALSE);
2035 opts_prog = newSVpvs("use Config; Config::_V()");
2039 opts_prog = Perl_newSVpvf(aTHX_
2040 "use Config; Config::config_vars(qw%c%s%c)",
2044 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2045 /* don't look for script or read stdin */
2046 scriptname = BIT_BUCKET;
2058 if (!*++s || isSPACE(*s)) {
2062 /* catch use of gnu style long options.
2063 Both of these exit immediately. */
2064 if (strEQ(s, "version"))
2066 if (strEQ(s, "help"))
2071 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2082 #ifndef SECURE_INTERNAL_GETENV
2085 (s = PerlEnv_getenv("PERL5OPT")))
2087 /* s points to static memory in getenv(), which may be overwritten at
2088 * any time; use a mortal copy instead */
2089 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2093 if (*s == '-' && *(s+1) == 'T') {
2094 #if defined(SILENT_NO_TAINT_SUPPORT)
2095 /* silently ignore */
2096 #elif defined(NO_TAINT_SUPPORT)
2097 Perl_croak_nocontext("This perl was compiled without taint support. "
2098 "Cowardly refusing to run with -t or -T flags");
2100 CHECK_MALLOC_TOO_LATE_FOR('T');
2102 TAINT_WARN_set(FALSE);
2106 char *popt_copy = NULL;
2119 if (!strchr("CDIMUdmtwW", *s))
2120 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2124 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2125 s = popt_copy + (s - d);
2133 #if defined(SILENT_NO_TAINT_SUPPORT)
2134 /* silently ignore */
2135 #elif defined(NO_TAINT_SUPPORT)
2136 Perl_croak_nocontext("This perl was compiled without taint support. "
2137 "Cowardly refusing to run with -t or -T flags");
2139 if( !TAINTING_get) {
2140 TAINT_WARN_set(TRUE);
2152 /* Set $^X early so that it can be used for relocatable paths in @INC */
2153 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2154 assert (!TAINT_get);
2159 #if defined(USE_SITECUSTOMIZE)
2161 /* The games with local $! are to avoid setting errno if there is no
2162 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2163 ie a q() operator with a NUL byte as a the delimiter. This avoids
2164 problems with pathnames containing (say) ' */
2165 # ifdef PERL_IS_MINIPERL
2166 AV *const inc = GvAV(PL_incgv);
2167 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2170 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2171 it should be reported immediately as a build failure. */
2172 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2174 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
2175 "do {local $!; -f $f }"
2176 " and do $f || die $@ || qq '$f: $!' }",
2177 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2180 /* SITELIB_EXP is a function call on Win32. */
2181 const char *const raw_sitelib = SITELIB_EXP;
2183 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2184 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2185 INCPUSH_CAN_RELOCATE);
2186 const char *const sitelib = SvPVX(sitelib_sv);
2187 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2189 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2190 0, SVfARG(sitelib), 0,
2191 0, SVfARG(sitelib), 0));
2192 assert (SvREFCNT(sitelib_sv) == 1);
2193 SvREFCNT_dec(sitelib_sv);
2200 scriptname = argv[0];
2203 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2205 else if (scriptname == NULL) {
2207 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2213 assert (!TAINT_get);
2217 bool suidscript = FALSE;
2219 rsfp = open_script(scriptname, dosearch, &suidscript);
2221 rsfp = PerlIO_stdin();
2222 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2225 validate_suid(rsfp);
2228 # if defined(SIGCHLD) || defined(SIGCLD)
2231 # define SIGCHLD SIGCLD
2233 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2234 if (sigstate == (Sighandler_t) SIG_IGN) {
2235 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2236 "Can't ignore signal CHLD, forcing to default");
2237 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2245 /* This will croak if suidscript is true, as -x cannot be used with
2247 forbid_setid('x', suidscript);
2248 /* Hence you can't get here if suidscript is true */
2250 linestr_sv = newSV_type(SVt_PV);
2251 lex_start_flags |= LEX_START_COPIED;
2252 find_beginning(linestr_sv, rsfp);
2253 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2254 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2258 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2259 CvUNIQUE_on(PL_compcv);
2261 CvPADLIST_set(PL_compcv, pad_new(0));
2263 PL_isarev = newHV();
2266 boot_core_UNIVERSAL();
2268 newXS("Internals::V", S_Internals_V, __FILE__);
2271 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2273 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2279 # ifdef HAS_SOCKS5_INIT
2280 socks5_init(argv[0]);
2286 init_predump_symbols();
2287 /* init_postdump_symbols not currently designed to be called */
2288 /* more than once (ENV isn't cleared first, for example) */
2289 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2291 init_postdump_symbols(argc,argv,env);
2293 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2294 * or explicitly in some platforms.
2295 * locale.c:Perl_init_i18nl10n() if the environment
2296 * look like the user wants to use UTF-8. */
2297 #if defined(__SYMBIAN32__)
2298 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2300 # ifndef PERL_IS_MINIPERL
2302 /* Requires init_predump_symbols(). */
2303 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2308 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2309 * and the default open disciplines. */
2310 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2311 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2313 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2314 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2315 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2317 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2318 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2319 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2321 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2322 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2323 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2325 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2326 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2329 sv_setpvs(sv, ":utf8\0:utf8");
2331 sv_setpvs(sv, ":utf8\0");
2334 sv_setpvs(sv, "\0:utf8");
2343 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2344 if (strEQ(s, "unsafe"))
2345 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2346 else if (strEQ(s, "safe"))
2347 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2349 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2354 lex_start(linestr_sv, rsfp, lex_start_flags);
2355 SvREFCNT_dec(linestr_sv);
2357 PL_subname = newSVpvs("main");
2359 if (add_read_e_script)
2360 filter_add(read_e_script, NULL);
2362 /* now parse the script */
2364 SETERRNO(0,SS_NORMAL);
2365 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2367 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2369 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2373 CopLINE_set(PL_curcop, 0);
2374 SET_CURSTASH(PL_defstash);
2376 SvREFCNT_dec(PL_e_script);
2384 SAVECOPFILE(PL_curcop);
2385 SAVECOPLINE(PL_curcop);
2386 gv_check(PL_defstash);
2396 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2397 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2398 dump_mstats("after compilation:");
2403 PL_restartjmpenv = NULL;
2409 =for apidoc perl_run
2411 Tells a Perl interpreter to run. See L<perlembed>.
2423 PERL_ARGS_ASSERT_PERL_RUN;
2424 #ifndef MULTIPLICITY
2425 PERL_UNUSED_ARG(my_perl);
2428 oldscope = PL_scopestack_ix;
2436 cxstack_ix = -1; /* start context stack again */
2438 case 0: /* normal completion */
2442 case 2: /* my_exit() */
2443 while (PL_scopestack_ix > oldscope)
2446 SET_CURSTASH(PL_defstash);
2447 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2448 PL_endav && !PL_minus_c) {
2449 PERL_SET_PHASE(PERL_PHASE_END);
2450 call_list(oldscope, PL_endav);
2453 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2454 dump_mstats("after execution: ");
2460 POPSTACK_TO(PL_mainstack);
2463 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2474 S_run_body(pTHX_ I32 oldscope)
2476 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2477 PL_sawampersand ? "Enabling" : "Omitting",
2478 (unsigned int)(PL_sawampersand)));
2480 if (!PL_restartop) {
2482 if (DEBUG_x_TEST || DEBUG_B_TEST)
2483 dump_all_perl(!DEBUG_B_TEST);
2485 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2489 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2492 if (PERLDB_SINGLE && PL_DBsingle)
2495 PERL_SET_PHASE(PERL_PHASE_INIT);
2496 call_list(oldscope, PL_initav);
2498 #ifdef PERL_DEBUG_READONLY_OPS
2499 if (PL_main_root && PL_main_root->op_slabbed)
2500 Slab_to_ro(OpSLAB(PL_main_root));
2506 PERL_SET_PHASE(PERL_PHASE_RUN);
2509 PL_restartjmpenv = NULL;
2510 PL_op = PL_restartop;
2514 else if (PL_main_start) {
2515 CvDEPTH(PL_main_cv) = 1;
2516 PL_op = PL_main_start;
2520 NOT_REACHED; /* NOTREACHED */
2524 =head1 SV Manipulation Functions
2526 =for apidoc p||get_sv
2528 Returns the SV of the specified Perl scalar. C<flags> are passed to
2529 C<gv_fetchpv>. If C<GV_ADD> is set and the
2530 Perl variable does not exist then it will be created. If C<flags> is zero
2531 and the variable does not exist then NULL is returned.
2537 Perl_get_sv(pTHX_ const char *name, I32 flags)
2541 PERL_ARGS_ASSERT_GET_SV;
2543 gv = gv_fetchpv(name, flags, SVt_PV);
2550 =head1 Array Manipulation Functions
2552 =for apidoc p||get_av
2554 Returns the AV of the specified Perl global or package array with the given
2555 name (so it won't work on lexical variables). C<flags> are passed
2556 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2557 Perl variable does not exist then it will be created. If C<flags> is zero
2558 and the variable does not exist then NULL is returned.
2560 Perl equivalent: C<@{"$name"}>.
2566 Perl_get_av(pTHX_ const char *name, I32 flags)
2568 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2570 PERL_ARGS_ASSERT_GET_AV;
2580 =head1 Hash Manipulation Functions
2582 =for apidoc p||get_hv
2584 Returns the HV of the specified Perl hash. C<flags> are passed to
2585 C<gv_fetchpv>. If C<GV_ADD> is set and the
2586 Perl variable does not exist then it will be created. If C<flags> is zero
2587 and the variable does not exist then C<NULL> is returned.
2593 Perl_get_hv(pTHX_ const char *name, I32 flags)
2595 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2597 PERL_ARGS_ASSERT_GET_HV;
2607 =head1 CV Manipulation Functions
2609 =for apidoc p||get_cvn_flags
2611 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2612 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2613 exist then it will be declared (which has the same effect as saying
2614 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2615 then NULL is returned.
2617 =for apidoc p||get_cv
2619 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2625 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2627 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2629 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2631 /* XXX this is probably not what they think they're getting.
2632 * It has the same effect as "sub name;", i.e. just a forward
2634 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2635 return newSTUB(gv,0);
2642 /* Nothing in core calls this now, but we can't replace it with a macro and
2643 move it to mathoms.c as a macro would evaluate name twice. */
2645 Perl_get_cv(pTHX_ const char *name, I32 flags)
2647 PERL_ARGS_ASSERT_GET_CV;
2649 return get_cvn_flags(name, strlen(name), flags);
2652 /* Be sure to refetch the stack pointer after calling these routines. */
2656 =head1 Callback Functions
2658 =for apidoc p||call_argv
2660 Performs a callback to the specified named and package-scoped Perl subroutine
2661 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2664 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2670 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2672 /* See G_* flags in cop.h */
2673 /* null terminated arg list */
2677 PERL_ARGS_ASSERT_CALL_ARGV;
2681 mXPUSHs(newSVpv(*argv,0));
2685 return call_pv(sub_name, flags);
2689 =for apidoc p||call_pv
2691 Performs a callback to the specified Perl sub. See L<perlcall>.
2697 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2698 /* name of the subroutine */
2699 /* See G_* flags in cop.h */
2701 PERL_ARGS_ASSERT_CALL_PV;
2703 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2707 =for apidoc p||call_method
2709 Performs a callback to the specified Perl method. The blessed object must
2710 be on the stack. See L<perlcall>.
2716 Perl_call_method(pTHX_ const char *methname, I32 flags)
2717 /* name of the subroutine */
2718 /* See G_* flags in cop.h */
2722 PERL_ARGS_ASSERT_CALL_METHOD;
2724 len = strlen(methname);
2725 sv = flags & G_METHOD_NAMED
2726 ? sv_2mortal(newSVpvn_share(methname, len,0))
2727 : newSVpvn_flags(methname, len, SVs_TEMP);
2729 return call_sv(sv, flags | G_METHOD);
2732 /* May be called with any of a CV, a GV, or an SV containing the name. */
2734 =for apidoc p||call_sv
2736 Performs a callback to the Perl sub specified by the SV.
2738 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2739 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2740 or C<SvPV(sv)> will be used as the name of the sub to call.
2742 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2743 C<SvPV(sv)> will be used as the name of the method to call.
2745 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2746 the name of the method to call.
2748 Some other values are treated specially for internal use and should
2757 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2758 /* See G_* flags in cop.h */
2761 LOGOP myop; /* fake syntax tree node */
2765 bool oldcatch = CATCH_GET;
2767 OP* const oldop = PL_op;
2770 PERL_ARGS_ASSERT_CALL_SV;
2772 if (flags & G_DISCARD) {
2776 if (!(flags & G_WANT)) {
2777 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2782 Zero(&myop, 1, LOGOP);
2783 if (!(flags & G_NOARGS))
2784 myop.op_flags |= OPf_STACKED;
2785 myop.op_flags |= OP_GIMME_REVERSE(flags);
2789 if (!(flags & G_METHOD_NAMED)) {
2797 if (PERLDB_SUB && PL_curstash != PL_debstash
2798 /* Handle first BEGIN of -d. */
2799 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2800 /* Try harder, since this may have been a sighandler, thus
2801 * curstash may be meaningless. */
2802 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2803 && !(flags & G_NODEBUG))
2804 myop.op_private |= OPpENTERSUB_DB;
2806 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2807 Zero(&method_op, 1, METHOP);
2808 method_op.op_next = (OP*)&myop;
2809 PL_op = (OP*)&method_op;
2810 if ( flags & G_METHOD_NAMED ) {
2811 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2812 method_op.op_type = OP_METHOD_NAMED;
2813 method_op.op_u.op_meth_sv = sv;
2815 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2816 method_op.op_type = OP_METHOD;
2818 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2819 myop.op_type = OP_ENTERSUB;
2822 if (!(flags & G_EVAL)) {
2824 CALL_BODY_SUB((OP*)&myop);
2825 retval = PL_stack_sp - (PL_stack_base + oldmark);
2826 CATCH_SET(oldcatch);
2830 myop.op_other = (OP*)&myop;
2832 old_cxix = cxstack_ix;
2833 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2841 CALL_BODY_SUB((OP*)&myop);
2842 retval = PL_stack_sp - (PL_stack_base + oldmark);
2843 if (!(flags & G_KEEPERR)) {
2851 /* my_exit() was called */
2852 SET_CURSTASH(PL_defstash);
2856 NOT_REACHED; /* NOTREACHED */
2859 PL_restartjmpenv = NULL;
2860 PL_op = PL_restartop;
2864 PL_stack_sp = PL_stack_base + oldmark;
2865 if ((flags & G_WANT) == G_ARRAY)
2869 *++PL_stack_sp = &PL_sv_undef;
2874 /* if we croaked, depending on how we croaked the eval scope
2875 * may or may not have already been popped */
2876 if (cxstack_ix > old_cxix) {
2877 assert(cxstack_ix == old_cxix + 1);
2878 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2879 delete_eval_scope();
2884 if (flags & G_DISCARD) {
2885 PL_stack_sp = PL_stack_base + oldmark;
2894 /* Eval a string. The G_EVAL flag is always assumed. */
2897 =for apidoc p||eval_sv
2899 Tells Perl to C<eval> the string in the SV. It supports the same flags
2900 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2906 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2908 /* See G_* flags in cop.h */
2911 UNOP myop; /* fake syntax tree node */
2915 OP* const oldop = PL_op;
2918 PERL_ARGS_ASSERT_EVAL_SV;
2920 if (flags & G_DISCARD) {
2927 Zero(&myop, 1, UNOP);
2930 oldmark = SP - PL_stack_base;
2936 if (!(flags & G_NOARGS))
2937 myop.op_flags = OPf_STACKED;
2938 myop.op_type = OP_ENTEREVAL;
2939 myop.op_flags |= OP_GIMME_REVERSE(flags);
2940 if (flags & G_KEEPERR)
2941 myop.op_flags |= OPf_SPECIAL;
2943 if (flags & G_RE_REPARSING)
2944 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2946 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2947 * before a cx_pusheval(), which corrupts the stack after a croak */
2948 TAINT_PROPER("eval_sv()");
2954 if (PL_op == (OP*)(&myop)) {
2955 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2957 goto fail; /* failed in compilation */
2960 retval = PL_stack_sp - (PL_stack_base + oldmark);
2961 if (!(flags & G_KEEPERR)) {
2969 /* my_exit() was called */
2970 SET_CURSTASH(PL_defstash);
2974 NOT_REACHED; /* NOTREACHED */
2977 PL_restartjmpenv = NULL;
2978 PL_op = PL_restartop;
2983 PL_stack_sp = PL_stack_base + oldmark;
2984 if ((flags & G_WANT) == G_ARRAY)
2988 *++PL_stack_sp = &PL_sv_undef;
2994 if (flags & G_DISCARD) {
2995 PL_stack_sp = PL_stack_base + oldmark;
3005 =for apidoc p||eval_pv
3007 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
3013 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
3015 SV* sv = newSVpv(p, 0);
3017 PERL_ARGS_ASSERT_EVAL_PV;
3019 eval_sv(sv, G_SCALAR);
3028 /* just check empty string or undef? */
3029 if (croak_on_error) {
3030 SV * const errsv = ERRSV;
3031 if(SvTRUE_NN(errsv))
3032 /* replace with croak_sv? */
3033 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3039 /* Require a module. */
3042 =head1 Embedding Functions
3044 =for apidoc p||require_pv
3046 Tells Perl to C<require> the file named by the string argument. It is
3047 analogous to the Perl code C<eval "require '$file'">. It's even
3048 implemented that way; consider using load_module instead.
3053 Perl_require_pv(pTHX_ const char *pv)
3058 PERL_ARGS_ASSERT_REQUIRE_PV;
3060 PUSHSTACKi(PERLSI_REQUIRE);
3061 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3062 eval_sv(sv_2mortal(sv), G_DISCARD);
3067 S_usage(pTHX) /* XXX move this out into a module ? */
3069 /* This message really ought to be max 23 lines.
3070 * Removed -h because the user already knows that option. Others? */
3072 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3073 minimum of 509 character string literals. */
3074 static const char * const usage_msg[] = {
3075 " -0[octal] specify record separator (\\0, if no argument)\n"
3076 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3077 " -C[number/list] enables the listed Unicode features\n"
3078 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3079 " -d[:debugger] run program under debugger\n"
3080 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3081 " -e program one line of program (several -e's allowed, omit programfile)\n"
3082 " -E program like -e, but enables all optional features\n"
3083 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3084 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3085 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3086 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3087 " -l[octal] enable line ending processing, specifies line terminator\n"
3088 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3089 " -n assume \"while (<>) { ... }\" loop around program\n"
3090 " -p assume loop like -n but print line also, like sed\n"
3091 " -s enable rudimentary parsing for switches after programfile\n"
3092 " -S look for programfile using PATH environment variable\n",
3093 " -t enable tainting warnings\n"
3094 " -T enable tainting checks\n"
3095 " -u dump core after parsing program\n"
3096 " -U allow unsafe operations\n"
3097 " -v print version, patchlevel and license\n"
3098 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3099 " -w enable many useful warnings\n"
3100 " -W enable all warnings\n"
3101 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3102 " -X disable all warnings\n"
3104 "Run 'perldoc perl' for more help with Perl.\n\n",
3107 const char * const *p = usage_msg;
3108 PerlIO *out = PerlIO_stdout();
3111 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3114 PerlIO_puts(out, *p++);
3118 /* convert a string of -D options (or digits) into an int.
3119 * sets *s to point to the char after the options */
3123 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3125 static const char * const usage_msgd[] = {
3126 " Debugging flag values: (see also -d)\n"
3127 " p Tokenizing and parsing (with v, displays parse stack)\n"
3128 " s Stack snapshots (with v, displays all stacks)\n"
3129 " l Context (loop) stack processing\n"
3130 " t Trace execution\n"
3131 " o Method and overloading resolution\n",
3132 " c String/numeric conversions\n"
3133 " P Print profiling info, source file input state\n"
3134 " m Memory and SV allocation\n"
3135 " f Format processing\n"
3136 " r Regular expression parsing and execution\n"
3137 " x Syntax tree dump\n",
3138 " u Tainting checks\n"
3139 " H Hash dump -- usurps values()\n"
3140 " X Scratchpad allocation\n"
3142 " S Op slab allocation\n"
3144 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3145 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3146 " v Verbose: use in conjunction with other flags\n"
3147 " C Copy On Write\n"
3148 " A Consistency checks on internal structures\n"
3149 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3150 " M trace smart match resolution\n"
3151 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3152 " L trace some locale setting information--for Perl core development\n",
3153 " i trace PerlIO layer processing\n",
3158 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3161 /* if adding extra options, remember to update DEBUG_MASK */
3162 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
3164 for (; isWORDCHAR(**s); (*s)++) {
3165 const char * const d = strchr(debopts,**s);
3167 uv |= 1 << (d - debopts);
3168 else if (ckWARN_d(WARN_DEBUGGING))
3169 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3170 "invalid option -D%c, use -D'' to see choices\n", **s);
3173 else if (isDIGIT(**s)) {
3175 if (grok_atoUV(*s, &uv, &e))
3177 for (; isWORDCHAR(**s); (*s)++) ;
3179 else if (givehelp) {
3180 const char *const *p = usage_msgd;
3181 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3183 return (int)uv; /* ignore any UV->int conversion loss */
3187 /* This routine handles any switches that can be given during run */
3190 Perl_moreswitches(pTHX_ const char *s)
3194 const char option = *s; /* used to remember option in -m/-M code */
3196 PERL_ARGS_ASSERT_MORESWITCHES;
3204 SvREFCNT_dec(PL_rs);
3205 if (s[1] == 'x' && s[2]) {
3206 const char *e = s+=2;
3212 flags = PERL_SCAN_SILENT_ILLDIGIT;
3213 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3214 if (s + numlen < e) {
3215 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3219 PL_rs = newSVpvs("");
3220 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3221 tmps = (U8*)SvPVX(PL_rs);
3222 uvchr_to_utf8(tmps, rschar);
3223 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3228 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3229 if (rschar & ~((U8)~0))
3230 PL_rs = &PL_sv_undef;
3231 else if (!rschar && numlen >= 2)
3232 PL_rs = newSVpvs("");
3234 char ch = (char)rschar;
3235 PL_rs = newSVpvn(&ch, 1);
3238 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3243 PL_unicode = parse_unicode_opts( (const char **)&s );
3244 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3252 while (*s && !isSPACE(*s)) ++s;
3253 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3265 forbid_setid('d', FALSE);
3268 /* -dt indicates to the debugger that threads will be used */
3269 if (*s == 't' && !isWORDCHAR(s[1])) {
3271 my_setenv("PERL5DB_THREADED", "1");
3274 /* The following permits -d:Mod to accepts arguments following an =
3275 in the fashion that -MSome::Mod does. */
3276 if (*s == ':' || *s == '=') {
3283 sv = newSVpvs("no Devel::");
3285 sv = newSVpvs("use Devel::");
3289 end = s + strlen(s);
3291 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3292 while(isWORDCHAR(*s) || *s==':') ++s;
3294 sv_catpvn(sv, start, end - start);
3296 sv_catpvn(sv, start, s-start);
3297 /* Don't use NUL as q// delimiter here, this string goes in the
3299 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3302 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3306 PL_perldb = PERLDB_ALL;
3313 forbid_setid('D', FALSE);
3315 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3316 #else /* !DEBUGGING */
3317 if (ckWARN_d(WARN_DEBUGGING))
3318 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3319 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3320 for (s++; isWORDCHAR(*s); s++) ;
3323 NOT_REACHED; /* NOTREACHED */
3327 NOT_REACHED; /* NOTREACHED */
3330 Safefree(PL_inplace);
3331 #if defined(__CYGWIN__) /* do backup extension automagically */
3332 if (*(s+1) == '\0') {
3333 PL_inplace = savepvs(".bak");
3336 #endif /* __CYGWIN__ */
3338 const char * const start = ++s;
3339 while (*s && !isSPACE(*s))
3342 PL_inplace = savepvn(start, s - start);
3346 if (*s == '-') /* Additional switches on #! line. */
3350 case 'I': /* -I handled both here and in parse_body() */
3351 forbid_setid('I', FALSE);
3353 while (*s && isSPACE(*s))
3358 /* ignore trailing spaces (possibly followed by other switches) */
3360 for (e = p; *e && !isSPACE(*e); e++) ;
3364 } while (*p && *p != '-');
3366 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3372 Perl_croak(aTHX_ "No directory specified for -I");
3378 SvREFCNT_dec(PL_ors_sv);
3384 PL_ors_sv = newSVpvs("\n");
3385 numlen = 3 + (*s == '0');
3386 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3390 if (RsPARA(PL_rs)) {
3391 PL_ors_sv = newSVpvs("\n\n");
3394 PL_ors_sv = newSVsv(PL_rs);
3399 forbid_setid('M', FALSE); /* XXX ? */
3402 forbid_setid('m', FALSE); /* XXX ? */
3407 const char *use = "use ";
3409 /* -M-foo == 'no foo' */
3410 /* Leading space on " no " is deliberate, to make both
3411 possibilities the same length. */
3412 if (*s == '-') { use = " no "; ++s; }
3413 sv = newSVpvn(use,4);
3415 /* We allow -M'Module qw(Foo Bar)' */
3416 while(isWORDCHAR(*s) || *s==':') {
3425 Perl_croak(aTHX_ "Module name required with -%c option",
3428 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3429 "contains single ':'",
3430 (int)(s - start), start, option);
3431 end = s + strlen(s);
3433 sv_catpvn(sv, start, end - start);
3434 if (option == 'm') {
3436 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3437 sv_catpvs( sv, " ()");
3440 sv_catpvn(sv, start, s-start);
3441 /* Use NUL as q''-delimiter. */
3442 sv_catpvs(sv, " split(/,/,q\0");
3444 sv_catpvn(sv, s, end - s);
3445 sv_catpvs(sv, "\0)");
3448 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3451 Perl_croak(aTHX_ "Missing argument to -%c", option);
3462 forbid_setid('s', FALSE);
3463 PL_doswitches = TRUE;
3468 #if defined(SILENT_NO_TAINT_SUPPORT)
3469 /* silently ignore */
3470 #elif defined(NO_TAINT_SUPPORT)
3471 Perl_croak_nocontext("This perl was compiled without taint support. "
3472 "Cowardly refusing to run with -t or -T flags");
3480 PL_do_undump = TRUE;
3490 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3491 PL_dowarn |= G_WARN_ON;
3496 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3497 if (!specialWARN(PL_compiling.cop_warnings))
3498 PerlMemShared_free(PL_compiling.cop_warnings);
3499 PL_compiling.cop_warnings = pWARN_ALL ;
3503 PL_dowarn = G_WARN_ALL_OFF;
3504 if (!specialWARN(PL_compiling.cop_warnings))
3505 PerlMemShared_free(PL_compiling.cop_warnings);
3506 PL_compiling.cop_warnings = pWARN_NONE ;
3513 if (s[0] == '-') /* Additional switches on #! line. */
3518 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3524 #ifdef ALTERNATE_SHEBANG
3525 case 'S': /* OS/2 needs -S on "extproc" line. */
3528 case 'e': case 'f': case 'x': case 'E':
3529 #ifndef ALTERNATE_SHEBANG
3533 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3536 "Unrecognized switch: -%.1s (-h will show valid options)",s
3546 PerlIO * PIO_stdout;
3548 const char * const level_str = "v" PERL_VERSION_STRING;
3549 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3550 #ifdef PERL_PATCHNUM
3552 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3553 static const char num [] = PERL_PATCHNUM "*";
3555 static const char num [] = PERL_PATCHNUM;
3558 const STRLEN num_len = sizeof(num)-1;
3559 /* A very advanced compiler would fold away the strnEQ
3560 and this whole conditional, but most (all?) won't do it.
3561 SV level could also be replaced by with preprocessor
3564 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3565 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3566 of the interp so it might contain format characters
3568 level = newSVpvn(num, num_len);
3570 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3574 SV* level = newSVpvn(level_str, level_len);
3575 #endif /* #ifdef PERL_PATCHNUM */
3576 PIO_stdout = PerlIO_stdout();
3577 PerlIO_printf(PIO_stdout,
3578 "\nThis is perl " STRINGIFY(PERL_REVISION)
3579 ", version " STRINGIFY(PERL_VERSION)
3580 ", subversion " STRINGIFY(PERL_SUBVERSION)
3581 " (%"SVf") built for " ARCHNAME, SVfARG(level)
3583 SvREFCNT_dec_NN(level);
3585 #if defined(LOCAL_PATCH_COUNT)
3586 if (LOCAL_PATCH_COUNT > 0)
3587 PerlIO_printf(PIO_stdout,
3588 "\n(with %d registered patch%s, "
3589 "see perl -V for more detail)",
3591 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3594 PerlIO_printf(PIO_stdout,
3595 "\n\nCopyright 1987-2016, Larry Wall\n");
3597 PerlIO_printf(PIO_stdout,
3598 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3601 PerlIO_printf(PIO_stdout,
3602 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3603 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3606 PerlIO_printf(PIO_stdout,
3607 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3608 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3611 PerlIO_printf(PIO_stdout,
3612 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3615 PerlIO_printf(PIO_stdout,
3616 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3619 PerlIO_printf(PIO_stdout,
3620 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3623 PerlIO_printf(PIO_stdout,
3624 "WINCE port by Rainer Keuchel, 2001-2002\n"
3625 "Built on " __DATE__ " " __TIME__ "\n\n");
3628 #ifdef __SYMBIAN32__
3629 PerlIO_printf(PIO_stdout,
3630 "Symbian port by Nokia, 2004-2005\n");
3632 #ifdef BINARY_BUILD_NOTICE
3633 BINARY_BUILD_NOTICE;
3635 PerlIO_printf(PIO_stdout,
3637 Perl may be copied only under the terms of either the Artistic License or the\n\
3638 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3639 Complete documentation for Perl, including FAQ lists, should be found on\n\
3640 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3641 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3645 /* compliments of Tom Christiansen */
3647 /* unexec() can be found in the Gnu emacs distribution */
3648 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3651 #include <lib$routines.h>
3655 Perl_my_unexec(pTHX)
3658 SV * prog = newSVpv(BIN_EXP, 0);
3659 SV * file = newSVpv(PL_origfilename, 0);
3663 sv_catpvs(prog, "/perl");
3664 sv_catpvs(file, ".perldump");
3666 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3667 /* unexec prints msg to stderr in case of failure */
3668 PerlProc_exit(status);
3670 PERL_UNUSED_CONTEXT;
3672 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3673 # elif defined(WIN32) || defined(__CYGWIN__)
3674 Perl_croak_nocontext("dump is not supported");
3676 ABORT(); /* for use with undump */
3681 /* initialize curinterp */
3686 # define PERLVAR(prefix,var,type)
3687 # define PERLVARA(prefix,var,n,type)
3688 # if defined(PERL_IMPLICIT_CONTEXT)
3689 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3690 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3692 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3693 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3695 # include "intrpvar.h"
3701 # define PERLVAR(prefix,var,type)
3702 # define PERLVARA(prefix,var,n,type)
3703 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3704 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3705 # include "intrpvar.h"
3715 S_init_main_stash(pTHX)
3719 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3720 /* We know that the string "main" will be in the global shared string
3721 table, so it's a small saving to use it rather than allocate another
3723 PL_curstname = newSVpvs_share("main");
3724 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3725 /* If we hadn't caused another reference to "main" to be in the shared
3726 string table above, then it would be worth reordering these two,
3727 because otherwise all we do is delete "main" from it as a consequence
3728 of the SvREFCNT_dec, only to add it again with hv_name_set */
3729 SvREFCNT_dec(GvHV(gv));
3730 hv_name_set(PL_defstash, "main", 4, 0);
3731 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3733 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3735 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3736 GvMULTI_on(PL_incgv);
3737 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3738 SvREFCNT_inc_simple_void(PL_hintgv);
3739 GvMULTI_on(PL_hintgv);
3740 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3741 SvREFCNT_inc_simple_void(PL_defgv);
3742 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3743 SvREFCNT_inc_simple_void(PL_errgv);
3744 GvMULTI_on(PL_errgv);
3745 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3746 SvREFCNT_inc_simple_void(PL_replgv);
3747 GvMULTI_on(PL_replgv);
3748 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3749 #ifdef PERL_DONT_CREATE_GVSV
3750 (void)gv_SVadd(PL_errgv);
3752 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3754 SET_CURSTASH(PL_defstash);
3755 CopSTASH_set(&PL_compiling, PL_defstash);
3756 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3757 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3759 /* We must init $/ before switches are processed. */
3760 sv_setpvs(get_sv("/", GV_ADD), "\n");
3764 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3767 PerlIO *rsfp = NULL;
3771 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3774 PL_origfilename = savepvs("-e");
3779 /* if find_script() returns, it returns a malloc()-ed value */
3780 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3782 if (strnEQ(scriptname, "/dev/fd/", 8)
3783 && isDIGIT(scriptname[8])
3784 && grok_atoUV(scriptname + 8, &uv, &s)
3785 && uv <= PERL_INT_MAX
3790 * Tell apart "normal" usage of fdscript, e.g.
3791 * with bash on FreeBSD:
3792 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3793 * from usage in suidperl.
3794 * Does any "normal" usage leave garbage after the number???
3795 * Is it a mistake to use a similar /dev/fd/ construct for
3800 * Be supersafe and do some sanity-checks.
3801 * Still, can we be sure we got the right thing?
3804 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3807 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3809 scriptname = savepv(s + 1);
3810 Safefree(PL_origfilename);
3811 PL_origfilename = (char *)scriptname;
3816 CopFILE_free(PL_curcop);
3817 CopFILE_set(PL_curcop, PL_origfilename);
3818 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3819 scriptname = (char *)"";
3820 if (fdscript >= 0) {
3821 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3823 else if (!*scriptname) {
3824 forbid_setid(0, *suidscript);
3828 #ifdef FAKE_BIT_BUCKET
3829 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3830 * is called) and still have the "-e" work. (Believe it or not,
3831 * a /dev/null is required for the "-e" to work because source
3832 * filter magic is used to implement it. ) This is *not* a general
3833 * replacement for a /dev/null. What we do here is create a temp
3834 * file (an empty file), open up that as the script, and then
3835 * immediately close and unlink it. Close enough for jazz. */
3836 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3837 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3838 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3839 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3840 FAKE_BIT_BUCKET_TEMPLATE
3842 const char * const err = "Failed to create a fake bit bucket";
3843 if (strEQ(scriptname, BIT_BUCKET)) {
3844 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3845 int old_umask = umask(0177);
3846 int tmpfd = mkstemp(tmpname);
3849 scriptname = tmpname;
3852 Perl_croak(aTHX_ err);
3855 scriptname = mktemp(tmpname);
3857 Perl_croak(aTHX_ err);
3862 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3863 #ifdef FAKE_BIT_BUCKET
3864 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3865 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3866 && strlen(scriptname) == sizeof(tmpname) - 1) {
3869 scriptname = BIT_BUCKET;
3873 /* PSz 16 Sep 03 Keep neat error message */
3875 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3877 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3878 CopFILE(PL_curcop), Strerror(errno));
3880 fd = PerlIO_fileno(rsfp);
3881 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3883 /* ensure close-on-exec */
3884 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3885 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3886 CopFILE(PL_curcop), Strerror(errno));
3892 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3893 && S_ISDIR(tmpstatbuf.st_mode)))
3894 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3902 * I_SYSSTATVFS HAS_FSTATVFS
3904 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3905 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3906 * here so that metaconfig picks them up. */
3909 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3910 /* Don't even need this function. */
3913 S_validate_suid(pTHX_ PerlIO *rsfp)
3915 const Uid_t my_uid = PerlProc_getuid();
3916 const Uid_t my_euid = PerlProc_geteuid();
3917 const Gid_t my_gid = PerlProc_getgid();
3918 const Gid_t my_egid = PerlProc_getegid();
3920 PERL_ARGS_ASSERT_VALIDATE_SUID;
3922 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3924 int fd = PerlIO_fileno(rsfp);
3926 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3927 Perl_croak_nocontext( "Illegal suidscript");
3929 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3931 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3934 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3935 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3936 /* not set-id, must be wrapped */
3939 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3942 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3947 PERL_ARGS_ASSERT_FIND_BEGINNING;
3949 /* skip forward in input to the real script? */
3952 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3953 Perl_croak(aTHX_ "No Perl script found in input\n");
3955 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3956 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3957 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3959 while (*s == ' ' || *s == '\t') s++;
3961 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3962 || s2[-1] == '_') s2--;
3963 if (strnEQ(s2-4,"perl",4))
3964 while ((s = moreswitches(s)))
3973 /* no need to do anything here any more if we don't
3975 #ifndef NO_TAINT_SUPPORT
3976 const Uid_t my_uid = PerlProc_getuid();
3977 const Uid_t my_euid = PerlProc_geteuid();
3978 const Gid_t my_gid = PerlProc_getgid();
3979 const Gid_t my_egid = PerlProc_getegid();
3981 PERL_UNUSED_CONTEXT;
3983 /* Should not happen: */
3984 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3985 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3989 * Should go by suidscript, not uid!=euid: why disallow
3990 * system("ls") in scripts run from setuid things?
3991 * Or, is this run before we check arguments and set suidscript?
3992 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3993 * (We never have suidscript, can we be sure to have fdscript?)
3994 * Or must then go by UID checks? See comments in forbid_setid also.
3998 /* This is used very early in the lifetime of the program,
3999 * before even the options are parsed, so PL_tainting has
4000 * not been initialized properly. */
4002 Perl_doing_taint(int argc, char *argv[], char *envp[])
4004 #ifndef PERL_IMPLICIT_SYS
4005 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
4006 * before we have an interpreter-- and the whole point of this
4007 * function is to be called at such an early stage. If you are on
4008 * a system with PERL_IMPLICIT_SYS but you do have a concept of
4009 * "tainted because running with altered effective ids', you'll
4010 * have to add your own checks somewhere in here. The two most
4011 * known samples of 'implicitness' are Win32 and NetWare, neither
4012 * of which has much of concept of 'uids'. */
4013 Uid_t uid = PerlProc_getuid();
4014 Uid_t euid = PerlProc_geteuid();
4015 Gid_t gid = PerlProc_getgid();
4016 Gid_t egid = PerlProc_getegid();
4023 if (uid && (euid != uid || egid != gid))
4025 #endif /* !PERL_IMPLICIT_SYS */
4026 /* This is a really primitive check; environment gets ignored only
4027 * if -T are the first chars together; otherwise one gets
4028 * "Too late" message. */
4029 if ( argc > 1 && argv[1][0] == '-'
4030 && isALPHA_FOLD_EQ(argv[1][1], 't'))
4035 /* Passing the flag as a single char rather than a string is a slight space
4036 optimisation. The only message that isn't /^-.$/ is
4037 "program input from stdin", which is substituted in place of '\0', which
4038 could never be a command line flag. */
4040 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
4042 char string[3] = "-x";
4043 const char *message = "program input from stdin";
4045 PERL_UNUSED_CONTEXT;
4051 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4052 if (PerlProc_getuid() != PerlProc_geteuid())
4053 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4054 if (PerlProc_getgid() != PerlProc_getegid())
4055 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4056 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4058 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4062 Perl_init_dbargs(pTHX)
4064 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4069 /* Someone has already created it.
4070 It might have entries, and if we just turn off AvREAL(), they will
4071 "leak" until global destruction. */
4073 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4074 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4076 AvREIFY_only(PL_dbargs);
4080 Perl_init_debugger(pTHX)
4082 HV * const ostash = PL_curstash;
4085 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4087 Perl_init_dbargs(aTHX);
4088 PL_DBgv = MUTABLE_GV(
4089 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4091 PL_DBline = MUTABLE_GV(
4092 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4094 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4095 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4097 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4098 if (!SvIOK(PL_DBsingle))
4099 sv_setiv(PL_DBsingle, 0);
4100 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4101 mg->mg_private = DBVARMG_SINGLE;
4102 SvSETMAGIC(PL_DBsingle);
4104 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4105 if (!SvIOK(PL_DBtrace))
4106 sv_setiv(PL_DBtrace, 0);
4107 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4108 mg->mg_private = DBVARMG_TRACE;
4109 SvSETMAGIC(PL_DBtrace);
4111 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4112 if (!SvIOK(PL_DBsignal))
4113 sv_setiv(PL_DBsignal, 0);
4114 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4115 mg->mg_private = DBVARMG_SIGNAL;
4116 SvSETMAGIC(PL_DBsignal);
4118 SvREFCNT_dec(PL_curstash);
4119 PL_curstash = ostash;
4122 #ifndef STRESS_REALLOC
4123 #define REASONABLE(size) (size)
4124 #define REASONABLE_but_at_least(size,min) (size)
4126 #define REASONABLE(size) (1) /* unreasonable */
4127 #define REASONABLE_but_at_least(size,min) (min)
4131 Perl_init_stacks(pTHX)
4135 /* start with 128-item stack and 8K cxstack */
4136 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4137 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4138 PL_curstackinfo->si_type = PERLSI_MAIN;
4139 PL_curstack = PL_curstackinfo->si_stack;
4140 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4142 PL_stack_base = AvARRAY(PL_curstack);
4143 PL_stack_sp = PL_stack_base;
4144 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4146 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4149 PL_tmps_max = REASONABLE(128);
4151 Newx(PL_markstack,REASONABLE(32),I32);
4152 PL_markstack_ptr = PL_markstack;
4153 PL_markstack_max = PL_markstack + REASONABLE(32);
4157 Newx(PL_scopestack,REASONABLE(32),I32);
4159 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4161 PL_scopestack_ix = 0;
4162 PL_scopestack_max = REASONABLE(32);
4164 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4165 Newx(PL_savestack, size, ANY);
4166 PL_savestack_ix = 0;
4167 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4168 PL_savestack_max = size - SS_MAXPUSH;
4176 while (PL_curstackinfo->si_next)
4177 PL_curstackinfo = PL_curstackinfo->si_next;
4178 while (PL_curstackinfo) {
4179 PERL_SI *p = PL_curstackinfo->si_prev;
4180 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4181 Safefree(PL_curstackinfo->si_cxstack);
4182 Safefree(PL_curstackinfo);
4183 PL_curstackinfo = p;
4185 Safefree(PL_tmps_stack);
4186 Safefree(PL_markstack);
4187 Safefree(PL_scopestack);
4189 Safefree(PL_scopestack_name);
4191 Safefree(PL_savestack);
4195 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4197 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4198 AV *const isa = GvAVn(gv);
4201 PERL_ARGS_ASSERT_POPULATE_ISA;
4203 if(AvFILLp(isa) != -1)
4206 /* NOTE: No support for tied ISA */
4208 va_start(args, len);
4210 const char *const parent = va_arg(args, const char*);
4215 parent_len = va_arg(args, size_t);
4217 /* Arguments are supplied with a trailing :: */
4218 assert(parent_len > 2);
4219 assert(parent[parent_len - 1] == ':');
4220 assert(parent[parent_len - 2] == ':');
4221 av_push(isa, newSVpvn(parent, parent_len - 2));
4222 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4229 S_init_predump_symbols(pTHX)
4234 sv_setpvs(get_sv("\"", GV_ADD), " ");
4235 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4238 /* Historically, PVIOs were blessed into IO::Handle, unless
4239 FileHandle was loaded, in which case they were blessed into
4240 that. Action at a distance.
4241 However, if we simply bless into IO::Handle, we break code
4242 that assumes that PVIOs will have (among others) a seek
4243 method. IO::File inherits from IO::Handle and IO::Seekable,
4244 and provides the needed methods. But if we simply bless into
4245 it, then we break code that assumed that by loading
4246 IO::Handle, *it* would work.
4247 So a compromise is to set up the correct @IO::File::ISA,
4248 so that code that does C<use IO::Handle>; will still work.
4251 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4252 STR_WITH_LEN("IO::Handle::"),
4253 STR_WITH_LEN("IO::Seekable::"),
4254 STR_WITH_LEN("Exporter::"),
4257 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4258 GvMULTI_on(PL_stdingv);
4259 io = GvIOp(PL_stdingv);
4260 IoTYPE(io) = IoTYPE_RDONLY;
4261 IoIFP(io) = PerlIO_stdin();
4262 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4264 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4266 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4269 IoTYPE(io) = IoTYPE_WRONLY;
4270 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4272 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4274 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4276 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4277 GvMULTI_on(PL_stderrgv);
4278 io = GvIOp(PL_stderrgv);
4279 IoTYPE(io) = IoTYPE_WRONLY;
4280 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4281 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4283 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4285 PL_statname = newSVpvs(""); /* last filename we did stat on */
4289 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4291 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4293 argc--,argv++; /* skip name of script */
4294 if (PL_doswitches) {
4295 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4299 if (argv[0][1] == '-' && !argv[0][2]) {
4303 if ((s = strchr(argv[0], '='))) {
4304 const char *const start_name = argv[0] + 1;
4305 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4306 TRUE, SVt_PV)), s + 1);
4309 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4312 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4313 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4314 GvMULTI_on(PL_argvgv);
4315 av_clear(GvAVn(PL_argvgv));
4316 for (; argc > 0; argc--,argv++) {
4317 SV * const sv = newSVpv(argv[0],0);
4318 av_push(GvAV(PL_argvgv),sv);
4319 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4320 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4323 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4324 (void)sv_utf8_decode(sv);
4328 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4329 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4330 "-i used with no filenames on the command line, "
4331 "reading from STDIN");
4335 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4342 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4344 PL_toptarget = newSV_type(SVt_PVIV);
4345 sv_setpvs(PL_toptarget, "");
4346 PL_bodytarget = newSV_type(SVt_PVIV);
4347 sv_setpvs(PL_bodytarget, "");
4348 PL_formtarget = PL_bodytarget;
4352 init_argv_symbols(argc,argv);
4354 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4355 sv_setpv(GvSV(tmpgv),PL_origfilename);
4357 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4359 bool env_is_not_environ;
4360 SvREFCNT_inc_simple_void_NN(PL_envgv);
4361 GvMULTI_on(PL_envgv);
4362 hv = GvHVn(PL_envgv);
4363 hv_magic(hv, NULL, PERL_MAGIC_env);
4365 #ifdef USE_ENVIRON_ARRAY
4366 /* Note that if the supplied env parameter is actually a copy
4367 of the global environ then it may now point to free'd memory
4368 if the environment has been modified since. To avoid this
4369 problem we treat env==NULL as meaning 'use the default'
4373 env_is_not_environ = env != environ;
4374 if (env_is_not_environ
4375 # ifdef USE_ITHREADS
4376 && PL_curinterp == aTHX
4388 for (; *env; env++) {
4391 if (!(s = strchr(old_var,'=')) || s == old_var)
4395 #if defined(MSDOS) && !defined(DJGPP)
4397 (void)strupr(old_var);
4400 if (hv_exists(hv, old_var, nlen)) {
4401 const char *name = savepvn(old_var, nlen);
4403 /* make sure we use the same value as getenv(), otherwise code that
4404 uses getenv() (like setlocale()) might see a different value to %ENV
4406 sv = newSVpv(PerlEnv_getenv(name), 0);
4408 /* keep a count of the dups of this name so we can de-dup environ later */
4409 if (hv_exists(dups, name, nlen))
4410 ++SvIVX(*hv_fetch(dups, name, nlen, 0));
4412 (void)hv_store(dups, name, nlen, newSViv(1), 0);
4417 sv = newSVpv(s+1, 0);
4419 (void)hv_store(hv, old_var, nlen, sv, 0);
4420 if (env_is_not_environ)
4424 /* environ has some duplicate definitions, remove them */
4427 while ((entry = hv_iternext_flags(dups, 0))) {
4429 const char *name = HePV(entry, nlen);
4430 IV count = SvIV(HeVAL(entry));
4432 SV **valp = hv_fetch(hv, name, nlen, 0);
4436 /* try to remove any duplicate names, depending on the
4437 * implementation used in my_setenv() the iteration might
4438 * not be necessary, but let's be safe.
4440 for (i = 0; i < count; ++i)
4443 /* and set it back to the value we set $ENV{name} to */
4444 my_setenv(name, SvPV_nolen(*valp));
4447 SvREFCNT_dec_NN(dups);
4449 #endif /* USE_ENVIRON_ARRAY */
4450 #endif /* !PERL_MICRO */
4454 /* touch @F array to prevent spurious warnings 20020415 MJD */
4456 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4461 S_init_perllib(pTHX)
4464 const char *perl5lib = NULL;
4467 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4471 if (!TAINTING_get) {
4473 perl5lib = PerlEnv_getenv("PERL5LIB");
4475 * It isn't possible to delete an environment variable with
4476 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4477 * case we treat PERL5LIB as undefined if it has a zero-length value.
4479 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4480 if (perl5lib && *perl5lib != '\0')
4484 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4486 s = PerlEnv_getenv("PERLLIB");
4488 incpush_use_sep(s, 0, 0);
4491 /* Treat PERL5?LIB as a possible search list logical name -- the
4492 * "natural" VMS idiom for a Unix path string. We allow each
4493 * element to be a set of |-separated directories for compatibility.
4497 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4499 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4500 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4502 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4503 incpush_use_sep(buf, 0, 0);
4508 #ifndef PERL_IS_MINIPERL
4509 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4510 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4512 /* Use the ~-expanded versions of APPLLIB (undocumented),
4513 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4516 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4517 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4521 /* sitearch is always relative to sitelib on Windows for
4522 * DLL-based path intuition to work correctly */
4523 # if !defined(WIN32)
4524 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4525 INCPUSH_CAN_RELOCATE);
4531 /* this picks up sitearch as well */
4532 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4534 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4536 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4540 #ifdef PERL_VENDORARCH_EXP
4541 /* vendorarch is always relative to vendorlib on Windows for
4542 * DLL-based path intuition to work correctly */
4543 # if !defined(WIN32)
4544 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4545 INCPUSH_CAN_RELOCATE);
4549 #ifdef PERL_VENDORLIB_EXP
4551 /* this picks up vendorarch as well */
4552 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4554 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4556 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4557 INCPUSH_CAN_RELOCATE);
4562 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4566 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4570 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4572 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4575 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4577 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4581 #ifdef PERL_OTHERLIBDIRS
4582 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4583 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4584 |INCPUSH_CAN_RELOCATE);
4587 if (!TAINTING_get) {
4590 * It isn't possible to delete an environment variable with
4591 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4592 * case we treat PERL5LIB as undefined if it has a zero-length value.
4594 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4595 if (perl5lib && *perl5lib != '\0')
4599 incpush_use_sep(perl5lib, 0,
4600 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4602 /* Treat PERL5?LIB as a possible search list logical name -- the
4603 * "natural" VMS idiom for a Unix path string. We allow each
4604 * element to be a set of |-separated directories for compatibility.
4608 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4610 incpush_use_sep(buf, 0,
4611 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4612 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4616 /* Use the ~-expanded versions of APPLLIB (undocumented),
4617 SITELIB and VENDORLIB for older versions
4620 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4621 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4624 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4625 /* Search for version-specific dirs below here */
4626 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4627 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4631 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4632 /* Search for version-specific dirs below here */
4633 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4634 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4637 #ifdef PERL_OTHERLIBDIRS
4638 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4639 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4640 |INCPUSH_CAN_RELOCATE);
4642 #endif /* !PERL_IS_MINIPERL */
4645 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4648 #if defined(DOSISH) || defined(__SYMBIAN32__)
4649 # define PERLLIB_SEP ';'
4652 # define PERLLIB_SEP '|'
4654 # define PERLLIB_SEP ':'
4657 #ifndef PERLLIB_MANGLE
4658 # define PERLLIB_MANGLE(s,n) (s)
4661 #ifndef PERL_IS_MINIPERL
4662 /* Push a directory onto @INC if it exists.
4663 Generate a new SV if we do this, to save needing to copy the SV we push
4666 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4670 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4672 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4673 S_ISDIR(tmpstatbuf.st_mode)) {
4675 dir = newSVsv(stem);
4677 /* Truncate dir back to stem. */
4678 SvCUR_set(dir, SvCUR(stem));
4685 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4687 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4690 PERL_ARGS_ASSERT_MAYBERELOCATE;
4693 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4694 defined to so something (in os2/os2.c), but the code has been
4695 this way, ignoring any possible changed of length, since
4696 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4698 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4704 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4706 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4707 sv_usepvn(libdir,unix,len);
4710 PerlIO_printf(Perl_error_log,
4711 "Failed to unixify @INC element \"%s\"\n",
4712 SvPV_nolen_const(libdir));
4716 /* Do the if() outside the #ifdef to avoid warnings about an unused
4719 #ifdef PERL_RELOCATABLE_INC
4721 * Relocatable include entries are marked with a leading .../
4724 * 0: Remove that leading ".../"
4725 * 1: Remove trailing executable name (anything after the last '/')
4726 * from the perl path to give a perl prefix
4728 * While the @INC element starts "../" and the prefix ends with a real
4729 * directory (ie not . or ..) chop that real directory off the prefix
4730 * and the leading "../" from the @INC element. ie a logical "../"
4732 * Finally concatenate the prefix and the remainder of the @INC element
4733 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4734 * generates /usr/local/lib/perl5
4736 const char *libpath = SvPVX(libdir);
4737 STRLEN libpath_len = SvCUR(libdir);
4738 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4740 SV * const caret_X = get_sv("\030", 0);
4741 /* Going to use the SV just as a scratch buffer holding a C
4747 /* $^X is *the* source of taint if tainting is on, hence
4748 SvPOK() won't be true. */
4750 assert(SvPOKp(caret_X));
4751 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4753 /* Firstly take off the leading .../
4754 If all else fail we'll do the paths relative to the current
4756 sv_chop(libdir, libpath + 4);
4757 /* Don't use SvPV as we're intentionally bypassing taining,
4758 mortal copies that the mg_get of tainting creates, and
4759 corruption that seems to come via the save stack.
4760 I guess that the save stack isn't correctly set up yet. */
4761 libpath = SvPVX(libdir);
4762 libpath_len = SvCUR(libdir);
4764 /* This would work more efficiently with memrchr, but as it's
4765 only a GNU extension we'd need to probe for it and
4766 implement our own. Not hard, but maybe not worth it? */
4768 prefix = SvPVX(prefix_sv);
4769 lastslash = strrchr(prefix, '/');
4771 /* First time in with the *lastslash = '\0' we just wipe off
4772 the trailing /perl from (say) /usr/foo/bin/perl
4776 while ((*lastslash = '\0'), /* Do that, come what may. */
4777 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4778 && (lastslash = strrchr(prefix, '/')))) {
4779 if (lastslash[1] == '\0'
4780 || (lastslash[1] == '.'
4781 && (lastslash[2] == '/' /* ends "/." */
4782 || (lastslash[2] == '/'
4783 && lastslash[3] == '/' /* or "/.." */
4785 /* Prefix ends "/" or "/." or "/..", any of which
4786 are fishy, so don't do any more logical cleanup.
4790 /* Remove leading "../" from path */
4793 /* Next iteration round the loop removes the last
4794 directory name from prefix by writing a '\0' in
4795 the while clause. */
4797 /* prefix has been terminated with a '\0' to the correct
4798 length. libpath points somewhere into the libdir SV.
4799 We need to join the 2 with '/' and drop the result into
4801 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4802 SvREFCNT_dec(libdir);
4803 /* And this is the new libdir. */
4806 (PerlProc_getuid() != PerlProc_geteuid() ||
4807 PerlProc_getgid() != PerlProc_getegid())) {
4808 /* Need to taint relocated paths if running set ID */
4809 SvTAINTED_on(libdir);
4812 SvREFCNT_dec(prefix_sv);
4820 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4822 #ifndef PERL_IS_MINIPERL
4823 const U8 using_sub_dirs
4824 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4825 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4826 const U8 add_versioned_sub_dirs
4827 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4828 const U8 add_archonly_sub_dirs
4829 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4830 #ifdef PERL_INC_VERSION_LIST
4831 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4834 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4835 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4836 AV *const inc = GvAVn(PL_incgv);
4838 PERL_ARGS_ASSERT_INCPUSH;
4841 /* Could remove this vestigial extra block, if we don't mind a lot of
4842 re-indenting diff noise. */
4844 SV *const libdir = mayberelocate(dir, len, flags);
4845 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4846 arranged to unshift #! line -I onto the front of @INC. However,
4847 -I can add version and architecture specific libraries, and they
4848 need to go first. The old code assumed that it was always
4849 pushing. Hence to make it work, need to push the architecture
4850 (etc) libraries onto a temporary array, then "unshift" that onto
4851 the front of @INC. */
4852 #ifndef PERL_IS_MINIPERL
4853 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4856 * BEFORE pushing libdir onto @INC we may first push version- and
4857 * archname-specific sub-directories.
4859 if (using_sub_dirs) {
4860 SV *subdir = newSVsv(libdir);
4861 #ifdef PERL_INC_VERSION_LIST
4862 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4863 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4864 const char * const *incver;
4867 if (add_versioned_sub_dirs) {
4868 /* .../version/archname if -d .../version/archname */
4869 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4870 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4872 /* .../version if -d .../version */
4873 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4874 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4877 #ifdef PERL_INC_VERSION_LIST
4879 for (incver = incverlist; *incver; incver++) {
4880 /* .../xxx if -d .../xxx */
4881 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4882 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4887 if (add_archonly_sub_dirs) {
4888 /* .../archname if -d .../archname */
4889 sv_catpvs(subdir, "/" ARCHNAME);
4890 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4894 assert (SvREFCNT(subdir) == 1);
4895 SvREFCNT_dec(subdir);
4897 #endif /* !PERL_IS_MINIPERL */
4898 /* finally add this lib directory at the end of @INC */
4900 #ifdef PERL_IS_MINIPERL
4901 const Size_t extra = 0;
4903 Size_t extra = av_tindex(av) + 1;
4905 av_unshift(inc, extra + push_basedir);
4907 av_store(inc, extra, libdir);
4908 #ifndef PERL_IS_MINIPERL
4910 /* av owns a reference, av_store() expects to be donated a
4911 reference, and av expects to be sane when it's cleared.
4912 If I wanted to be naughty and wrong, I could peek inside the
4913 implementation of av_clear(), realise that it uses
4914 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4915 and so directly steal from it (with a memcpy() to inc, and
4916 then memset() to NULL them out. But people copy code from the
4917 core expecting it to be best practise, so let's use the API.
4918 Although studious readers will note that I'm not checking any
4920 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4925 else if (push_basedir) {
4926 av_push(inc, libdir);
4929 if (!push_basedir) {
4930 assert (SvREFCNT(libdir) == 1);
4931 SvREFCNT_dec(libdir);
4937 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4941 /* This logic has been broken out from S_incpush(). It may be possible to
4944 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4946 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4947 * argument to incpush_use_sep. This allows creation of relocatable
4948 * Perl distributions that patch the binary at install time. Those
4949 * distributions will have to provide their own relocation tools; this
4950 * is not a feature otherwise supported by core Perl.
4952 #ifndef PERL_RELOCATABLE_INCPUSH
4959 /* Break at all separators */
4960 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4962 /* skip any consecutive separators */
4964 /* Uncomment the next line for PATH semantics */
4965 /* But you'll need to write tests */
4966 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4968 incpush(p, (STRLEN)(s - p), flags);
4973 incpush(p, (STRLEN)(end - p), flags);
4978 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4981 VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4987 PERL_ARGS_ASSERT_CALL_LIST;
4989 while (av_tindex(paramList) >= 0) {
4990 cv = MUTABLE_CV(av_shift(paramList));
4992 if (paramList == PL_beginav) {
4993 /* save PL_beginav for compiler */
4994 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4996 else if (paramList == PL_checkav) {
4997 /* save PL_checkav for compiler */
4998 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
5000 else if (paramList == PL_unitcheckav) {
5001 /* save PL_unitcheckav for compiler */
5002 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
5012 (void)SvPV_const(atsv, len);
5014 PL_curcop = &PL_compiling;
5015 CopLINE_set(PL_curcop, oldline);
5016 if (paramList == PL_beginav)
5017 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
5019 Perl_sv_catpvf(aTHX_ atsv,
5020 "%s failed--call queue aborted",
5021 paramList == PL_checkav ? "CHECK"
5022 : paramList == PL_initav ? "INIT"
5023 : paramList == PL_unitcheckav ? "UNITCHECK"
5025 while (PL_scopestack_ix > oldscope)
5028 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
5035 /* my_exit() was called */
5036 while (PL_scopestack_ix > oldscope)
5039 SET_CURSTASH(PL_defstash);
5040 PL_curcop = &PL_compiling;
5041 CopLINE_set(PL_curcop, oldline);
5044 NOT_REACHED; /* NOTREACHED */
5047 PL_curcop = &PL_compiling;
5048 CopLINE_set(PL_curcop, oldline);
5051 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
5060 Perl_my_exit(pTHX_ U32 status)
5062 if (PL_exit_flags & PERL_EXIT_ABORT) {
5065 if (PL_exit_flags & PERL_EXIT_WARN) {
5066 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5067 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
5068 PL_exit_flags &= ~PERL_EXIT_ABORT;
5078 STATUS_EXIT_SET(status);
5085 Perl_my_failure_exit(pTHX)
5088 /* We have been called to fall on our sword. The desired exit code
5089 * should be already set in STATUS_UNIX, but could be shifted over
5090 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5093 * If an error code has not been set, then force the issue.
5095 if (MY_POSIX_EXIT) {
5097 /* According to the die_exit.t tests, if errno is non-zero */
5098 /* It should be used for the error status. */
5100 if (errno == EVMSERR) {
5101 STATUS_NATIVE = vaxc$errno;
5104 /* According to die_exit.t tests, if the child_exit code is */
5105 /* also zero, then we need to exit with a code of 255 */
5106 if ((errno != 0) && (errno < 256))
5107 STATUS_UNIX_EXIT_SET(errno);
5108 else if (STATUS_UNIX < 255) {
5109 STATUS_UNIX_EXIT_SET(255);
5114 /* The exit code could have been set by $? or vmsish which
5115 * means that it may not have fatal set. So convert
5116 * success/warning codes to fatal with out changing
5117 * the POSIX status code. The severity makes VMS native
5118 * status handling work, while UNIX mode programs use the
5119 * the POSIX exit codes.
5121 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5122 STATUS_NATIVE &= STS$M_COND_ID;
5123 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5127 /* Traditionally Perl on VMS always expects a Fatal Error. */
5128 if (vaxc$errno & 1) {
5130 /* So force success status to failure */
5131 if (STATUS_NATIVE & 1)
5136 STATUS_UNIX = EINTR; /* In case something cares */
5141 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5143 /* Encode the severity code */
5144 severity = STATUS_NATIVE & STS$M_SEVERITY;
5145 STATUS_UNIX = (severity ? severity : 1) << 8;
5147 /* Perl expects this to be a fatal error */
5148 if (severity != STS$K_SEVERE)
5157 STATUS_UNIX_SET(errno);
5159 exitstatus = STATUS_UNIX >> 8;
5160 if (exitstatus & 255)
5161 STATUS_UNIX_SET(exitstatus);
5163 STATUS_UNIX_SET(255);
5166 if (PL_exit_flags & PERL_EXIT_ABORT) {
5169 if (PL_exit_flags & PERL_EXIT_WARN) {
5170 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5171 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5172 PL_exit_flags &= ~PERL_EXIT_ABORT;
5178 S_my_exit_jump(pTHX)
5181 SvREFCNT_dec(PL_e_script);
5185 POPSTACK_TO(PL_mainstack);
5186 if (cxstack_ix >= 0) {
5188 cx_popblock(cxstack);
5196 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5198 const char * const p = SvPVX_const(PL_e_script);
5199 const char *nl = strchr(p, '\n');
5201 PERL_UNUSED_ARG(idx);
5202 PERL_UNUSED_ARG(maxlen);
5204 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5206 filter_del(read_e_script);
5209 sv_catpvn(buf_sv, p, nl-p);
5210 sv_chop(PL_e_script, nl);
5214 /* removes boilerplate code at the end of each boot_Module xsub */
5216 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5219 call_list(PL_scopestack_ix, PL_unitcheckav);
5224 * ex: set ts=8 sts=4 sw=4 et: