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, 2017 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
26 * Note that at build time this file is also linked to as perlmini.c,
27 * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is
28 * then used to create the miniperl executable, rather than perl.o.
31 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
32 # define USE_SITECUSTOMIZE
36 #define PERL_IN_PERL_C
38 #include "patchlevel.h" /* for local_patches */
45 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
52 char control[CMSG_SPACE(sizeof(int))];
65 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
66 char *getenv (char *); /* Usually in <stdlib.h> */
69 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
71 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
72 # define validate_suid(rsfp) NOOP
74 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
77 #define CALL_BODY_SUB(myop) \
78 if (PL_op == (myop)) \
79 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
83 #define CALL_LIST_BODY(cv) \
84 PUSHMARK(PL_stack_sp); \
85 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
88 S_init_tls_and_interp(PerlInterpreter *my_perl)
92 PERL_SET_INTERP(my_perl);
93 #if defined(USE_ITHREADS)
96 PERL_SET_THX(my_perl);
101 MUTEX_INIT(&PL_dollarzero_mutex);
102 MUTEX_INIT(&PL_my_ctx_mutex);
105 #if defined(USE_ITHREADS)
108 /* This always happens for non-ithreads */
111 PERL_SET_THX(my_perl);
116 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
119 Perl_sys_init(int* argc, char*** argv)
123 PERL_ARGS_ASSERT_SYS_INIT;
125 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
126 PERL_UNUSED_ARG(argv);
127 PERL_SYS_INIT_BODY(argc, argv);
131 Perl_sys_init3(int* argc, char*** argv, char*** env)
135 PERL_ARGS_ASSERT_SYS_INIT3;
137 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
138 PERL_UNUSED_ARG(argv);
139 PERL_UNUSED_ARG(env);
140 PERL_SYS_INIT3_BODY(argc, argv, env);
147 if (!PL_veto_cleanup) {
148 PERL_SYS_TERM_BODY();
153 #ifdef PERL_IMPLICIT_SYS
155 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
161 PerlInterpreter *my_perl;
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
165 /* Newx() needs interpreter, so call malloc() instead */
166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
167 S_init_tls_and_interp(my_perl);
168 Zero(my_perl, 1, PerlInterpreter);
178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
185 =head1 Embedding Functions
187 =for apidoc perl_alloc
189 Allocates a new Perl interpreter. See L<perlembed>.
197 PerlInterpreter *my_perl;
199 /* Newx() needs interpreter, so call malloc() instead */
200 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
202 S_init_tls_and_interp(my_perl);
203 #ifndef PERL_TRACK_MEMPOOL
204 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
206 Zero(my_perl, 1, PerlInterpreter);
207 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 #endif /* PERL_IMPLICIT_SYS */
214 =for apidoc perl_construct
216 Initializes a new Perl interpreter. See L<perlembed>.
222 S_fixup_platform_bugs(void)
224 #if defined(__GLIBC__) && IVSIZE == 8 \
225 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
229 /* Cannot do this check with inlined IV constants since
230 * that seems to work correctly even with the buggy glibc. */
233 /* Yikes, we have the bug.
234 * Patch in the workaround version. */
235 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
242 perl_construct(pTHXx)
246 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
250 PL_perl_destruct_level = 1;
252 PERL_UNUSED_ARG(my_perl);
253 if (PL_perl_destruct_level > 0)
256 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
258 #ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
264 SvREADONLY_on(&PL_sv_placeholder);
265 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
267 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
268 #ifdef PERL_USES_PL_PIDSTATUS
269 PL_pidstatus = newHV();
272 PL_rs = newSVpvs("\n");
278 S_fixup_platform_bugs();
285 #if defined(LOCAL_PATCH_COUNT)
286 PL_localpatches = local_patches; /* For possible -v */
289 #ifdef HAVE_INTERP_INTERN
293 PerlIO_init(aTHX); /* Hook to IO system */
295 PL_fdpid = newAV(); /* for remembering popen pids by fd */
296 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
297 PL_errors = newSVpvs("");
298 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
299 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
300 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
305 PL_regex_pad = AvARRAY(PL_regex_padav);
306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
308 #ifdef USE_REENTRANT_API
309 Perl_reentrant_init(aTHX);
311 if (PL_hash_seed_set == FALSE) {
312 /* Initialize the hash seed and state at startup. This must be
313 * done very early, before ANY hashes are constructed, and once
314 * setup is fixed for the lifetime of the process.
316 * If you decide to disable the seeding process you should choose
317 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
318 * string. See hv_func.h for details.
320 #if defined(USE_HASH_SEED)
321 /* get the hash seed from the environment or from an RNG */
322 Perl_get_hash_seed(aTHX_ PL_hash_seed);
324 /* they want a hard coded seed, check that it is long enough */
325 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
328 /* now we use the chosen seed to initialize the state -
329 * in some configurations this may be a relatively speaking
330 * expensive operation, but we only have to do it once at startup */
331 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
333 #ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
334 /* we can build a special cache for 0/1 byte keys, if people choose
335 * I suspect most of the time it is not worth it */
339 for (i=0;i<256;i++) {
341 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
343 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
346 /* at this point we have initialezed the hash function, and we can start
347 * constructing hashes */
348 PL_hash_seed_set= TRUE;
350 /* Note that strtab is a rather special HV. Assumptions are made
351 about not iterating on it, and not adding tie magic to it.
352 It is properly deallocated in perl_destruct() */
355 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
356 * which is not the case with PL_strtab itself */
357 HvSHAREKEYS_off(PL_strtab); /* mandatory */
358 hv_ksplit(PL_strtab, 1 << 11);
360 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
363 # ifdef USE_ENVIRON_ARRAY
364 PL_origenviron = environ;
368 /* Use sysconf(_SC_CLK_TCK) if available, if not
369 * available or if the sysconf() fails, use the HZ.
370 * The HZ if not originally defined has been by now
371 * been defined as CLK_TCK, if available. */
372 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
373 PL_clocktick = sysconf(_SC_CLK_TCK);
374 if (PL_clocktick <= 0)
378 PL_stashcache = newHV();
380 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
383 if (!PL_mmap_page_size) {
384 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
386 SETERRNO(0, SS_NORMAL);
388 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
390 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
392 if ((long) PL_mmap_page_size < 0) {
394 SV * const error = ERRSV;
395 SvUPGRADE(error, SVt_PV);
396 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
399 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
403 # ifdef HAS_GETPAGESIZE
404 PL_mmap_page_size = getpagesize();
406 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
407 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
411 if (PL_mmap_page_size <= 0)
412 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
413 (IV) PL_mmap_page_size);
415 #endif /* HAS_MMAP */
417 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
418 PL_timesbase.tms_utime = 0;
419 PL_timesbase.tms_stime = 0;
420 PL_timesbase.tms_cutime = 0;
421 PL_timesbase.tms_cstime = 0;
424 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
426 PL_registered_mros = newHV();
427 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
428 HvMAX(PL_registered_mros) = 0;
430 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
431 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
432 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
433 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
434 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
435 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
436 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
437 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
438 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
439 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
440 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
441 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
442 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
443 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
444 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
445 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
446 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
447 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
448 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
449 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
450 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
451 #ifdef USE_THREAD_SAFE_LOCALE
452 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
459 =for apidoc nothreadhook
461 Stub that provides thread hook for perl_destruct when there are
468 Perl_nothreadhook(pTHX)
474 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
476 Perl_dump_sv_child(pTHX_ SV *sv)
479 const int sock = PL_dumper_fd;
480 const int debug_fd = PerlIO_fileno(Perl_debug_log);
481 union control_un control;
484 struct cmsghdr *cmptr;
486 unsigned char buffer[256];
488 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
490 if(sock == -1 || debug_fd == -1)
493 PerlIO_flush(Perl_debug_log);
495 /* All these shenanigans are to pass a file descriptor over to our child for
496 it to dump out to. We can't let it hold open the file descriptor when it
497 forks, as the file descriptor it will dump to can turn out to be one end
498 of pipe that some other process will wait on for EOF. (So as it would
499 be open, the wait would be forever.) */
501 msg.msg_control = control.control;
502 msg.msg_controllen = sizeof(control.control);
503 /* We're a connected socket so we don't need a destination */
509 cmptr = CMSG_FIRSTHDR(&msg);
510 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
511 cmptr->cmsg_level = SOL_SOCKET;
512 cmptr->cmsg_type = SCM_RIGHTS;
513 *((int *)CMSG_DATA(cmptr)) = 1;
515 vec[0].iov_base = (void*)&sv;
516 vec[0].iov_len = sizeof(sv);
517 got = sendmsg(sock, &msg, 0);
520 perror("Debug leaking scalars parent sendmsg failed");
523 if(got < sizeof(sv)) {
524 perror("Debug leaking scalars parent short sendmsg");
528 /* Return protocol is
530 unsigned char: length of location string (0 for empty)
531 unsigned char*: string (not terminated)
533 vec[0].iov_base = (void*)&returned_errno;
534 vec[0].iov_len = sizeof(returned_errno);
535 vec[1].iov_base = buffer;
538 got = readv(sock, vec, 2);
541 perror("Debug leaking scalars parent read failed");
542 PerlIO_flush(PerlIO_stderr());
545 if(got < sizeof(returned_errno) + 1) {
546 perror("Debug leaking scalars parent short read");
547 PerlIO_flush(PerlIO_stderr());
552 got = read(sock, buffer + 1, *buffer);
554 perror("Debug leaking scalars parent read 2 failed");
555 PerlIO_flush(PerlIO_stderr());
560 perror("Debug leaking scalars parent short read 2");
561 PerlIO_flush(PerlIO_stderr());
566 if (returned_errno || *buffer) {
567 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
568 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
569 returned_errno, Strerror(returned_errno));
575 =for apidoc perl_destruct
577 Shuts down a Perl interpreter. See L<perlembed>.
586 VOL signed char destruct_level; /* see possible values in intrpvar.h */
588 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
593 PERL_ARGS_ASSERT_PERL_DESTRUCT;
595 PERL_UNUSED_ARG(my_perl);
598 assert(PL_scopestack_ix == 1);
600 /* wait for all pseudo-forked children to finish */
601 PERL_WAIT_FOR_CHILDREN;
603 destruct_level = PL_perl_destruct_level;
604 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
606 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
609 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
613 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
619 if (destruct_level < i) destruct_level = i;
621 #ifdef PERL_TRACK_MEMPOOL
622 /* RT #114496, for perl_free */
623 PL_perl_destruct_level = i;
629 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
635 if (PL_endav && !PL_minus_c) {
636 PERL_SET_PHASE(PERL_PHASE_END);
637 call_list(PL_scopestack_ix, PL_endav);
643 assert(PL_scopestack_ix == 0);
645 /* Need to flush since END blocks can produce output */
646 /* flush stdout separately, since we can identify it */
649 PerlIO *stdo = PerlIO_stdout();
650 if (*stdo && PerlIO_flush(stdo)) {
651 PerlIO_restore_errno(stdo);
653 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
662 #ifdef PERL_TRACE_OPS
663 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
665 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
668 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
672 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
673 for (i = 0; i <= OP_max; ++i) {
674 if (PL_op_exec_cnt[i])
675 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
677 /* Utility slot for easily doing little tracing experiments in the runloop: */
678 if (PL_op_exec_cnt[OP_max+1] != 0)
679 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
680 PerlIO_printf(Perl_debug_log, "\n");
685 if (PL_threadhook(aTHX)) {
686 /* Threads hook has vetoed further cleanup */
687 PL_veto_cleanup = TRUE;
691 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
692 if (destruct_level != 0) {
693 /* Fork here to create a child. Our child's job is to preserve the
694 state of scalars prior to destruction, so that we can instruct it
695 to dump any scalars that we later find have leaked.
696 There's no subtlety in this code - it assumes POSIX, and it doesn't
700 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
701 perror("Debug leaking scalars socketpair failed");
707 perror("Debug leaking scalars fork failed");
711 /* We are the child */
712 const int sock = fd[1];
713 const int debug_fd = PerlIO_fileno(Perl_debug_log);
716 /* Our success message is an integer 0, and a char 0 */
717 static const char success[sizeof(int) + 1] = {0};
721 /* We need to close all other file descriptors otherwise we end up
722 with interesting hangs, where the parent closes its end of a
723 pipe, and sits waiting for (another) child to terminate. Only
724 that child never terminates, because it never gets EOF, because
725 we also have the far end of the pipe open. We even need to
726 close the debugging fd, because sometimes it happens to be one
727 end of a pipe, and a process is waiting on the other end for
728 EOF. Normally it would be closed at some point earlier in
729 destruction, but if we happen to cause the pipe to remain open,
730 EOF never occurs, and we get an infinite hang. Hence all the
731 games to pass in a file descriptor if it's actually needed. */
733 f = sysconf(_SC_OPEN_MAX);
735 where = "sysconf failed";
746 union control_un control;
749 struct cmsghdr *cmptr;
753 msg.msg_control = control.control;
754 msg.msg_controllen = sizeof(control.control);
755 /* We're a connected socket so we don't need a source */
759 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
761 vec[0].iov_base = (void*)⌖
762 vec[0].iov_len = sizeof(target);
764 got = recvmsg(sock, &msg, 0);
769 where = "recv failed";
772 if(got < sizeof(target)) {
773 where = "short recv";
777 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
781 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
782 where = "wrong cmsg_len";
785 if(cmptr->cmsg_level != SOL_SOCKET) {
786 where = "wrong cmsg_level";
789 if(cmptr->cmsg_type != SCM_RIGHTS) {
790 where = "wrong cmsg_type";
794 got_fd = *(int*)CMSG_DATA(cmptr);
795 /* For our last little bit of trickery, put the file descriptor
796 back into Perl_debug_log, as if we never actually closed it
798 if(got_fd != debug_fd) {
799 if (dup2(got_fd, debug_fd) == -1) {
806 PerlIO_flush(Perl_debug_log);
808 got = write(sock, &success, sizeof(success));
811 where = "write failed";
814 if(got < sizeof(success)) {
815 where = "short write";
822 int send_errno = errno;
823 unsigned char length = (unsigned char) strlen(where);
824 struct iovec failure[3] = {
825 {(void*)&send_errno, sizeof(send_errno)},
827 {(void*)where, length}
829 int got = writev(sock, failure, 3);
830 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
831 in the parent if we try to read from the socketpair after the
832 child has exited, even if there was data to read.
833 So sleep a bit to give the parent a fighting chance of
836 _exit((got == -1) ? errno : 0);
840 PL_dumper_fd = fd[0];
845 /* We must account for everything. */
847 /* Destroy the main CV and syntax tree */
848 /* Set PL_curcop now, because destroying ops can cause new SVs
849 to be generated in Perl_pad_swipe, and when running with
850 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
851 op from which the filename structure member is copied. */
852 PL_curcop = &PL_compiling;
854 /* ensure comppad/curpad to refer to main's pad */
855 if (CvPADLIST(PL_main_cv)) {
856 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
857 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
859 op_free(PL_main_root);
862 PL_main_start = NULL;
863 /* note that PL_main_cv isn't usually actually freed at this point,
864 * due to the CvOUTSIDE refs from subs compiled within it. It will
865 * get freed once all the subs are freed in sv_clean_all(), for
866 * destruct_level > 0 */
867 SvREFCNT_dec(PL_main_cv);
869 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
871 /* Tell PerlIO we are about to tear things apart in case
872 we have layers which are using resources that should
876 PerlIO_destruct(aTHX);
879 * Try to destruct global references. We do this first so that the
880 * destructors and destructees still exist. Some sv's might remain.
881 * Non-referenced objects are on their own.
885 /* unhook hooks which will soon be, or use, destroyed data */
886 SvREFCNT_dec(PL_warnhook);
888 SvREFCNT_dec(PL_diehook);
891 /* call exit list functions */
892 while (PL_exitlistlen-- > 0)
893 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
895 Safefree(PL_exitlist);
900 SvREFCNT_dec(PL_registered_mros);
902 /* jettison our possibly duplicated environment */
903 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
904 * so we certainly shouldn't free it here
907 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
908 if (environ != PL_origenviron && !PL_use_safe_putenv
910 /* only main thread can free environ[0] contents */
911 && PL_curinterp == aTHX
917 for (i = 0; environ[i]; i++)
918 safesysfree(environ[i]);
920 /* Must use safesysfree() when working with environ. */
921 safesysfree(environ);
923 environ = PL_origenviron;
926 #endif /* !PERL_MICRO */
928 if (destruct_level == 0) {
930 DEBUG_P(debprofdump());
932 #if defined(PERLIO_LAYERS)
933 /* No more IO - including error messages ! */
934 PerlIO_cleanup(aTHX);
937 CopFILE_free(&PL_compiling);
939 /* The exit() function will do everything that needs doing. */
943 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
946 /* the syntax tree is shared between clones
947 * so op_free(PL_main_root) only ReREFCNT_dec's
948 * REGEXPs in the parent interpreter
949 * we need to manually ReREFCNT_dec for the clones
952 I32 i = AvFILLp(PL_regex_padav);
953 SV **ary = AvARRAY(PL_regex_padav);
956 SvREFCNT_dec(ary[i]);
957 ary[i] = &PL_sv_undef;
963 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
964 PL_stashcache = NULL;
966 /* loosen bonds of global variables */
968 /* XXX can PL_parser still be non-null here? */
969 if(PL_parser && PL_parser->rsfp) {
970 (void)PerlIO_close(PL_parser->rsfp);
971 PL_parser->rsfp = NULL;
975 Safefree(PL_splitstr);
985 PL_doswitches = FALSE;
986 PL_dowarn = G_WARN_OFF;
987 #ifdef PERL_SAWAMPERSAND
988 PL_sawampersand = 0; /* must save all match strings */
992 Safefree(PL_inplace);
994 SvREFCNT_dec(PL_patchlevel);
997 SvREFCNT_dec(PL_e_script);
1003 /* magical thingies */
1005 SvREFCNT_dec(PL_ofsgv); /* *, */
1008 SvREFCNT_dec(PL_ors_sv); /* $\ */
1011 SvREFCNT_dec(PL_rs); /* $/ */
1014 Safefree(PL_osname); /* $^O */
1017 SvREFCNT_dec(PL_statname);
1021 /* defgv, aka *_ should be taken care of elsewhere */
1024 Safefree(PL_efloatbuf);
1025 PL_efloatbuf = NULL;
1028 /* startup and shutdown function lists */
1029 SvREFCNT_dec(PL_beginav);
1030 SvREFCNT_dec(PL_beginav_save);
1031 SvREFCNT_dec(PL_endav);
1032 SvREFCNT_dec(PL_checkav);
1033 SvREFCNT_dec(PL_checkav_save);
1034 SvREFCNT_dec(PL_unitcheckav);
1035 SvREFCNT_dec(PL_unitcheckav_save);
1036 SvREFCNT_dec(PL_initav);
1038 PL_beginav_save = NULL;
1041 PL_checkav_save = NULL;
1042 PL_unitcheckav = NULL;
1043 PL_unitcheckav_save = NULL;
1046 /* shortcuts just get cleared */
1049 PL_argvoutgv = NULL;
1052 PL_last_in_gv = NULL;
1063 SvREFCNT_dec(PL_envgv);
1064 SvREFCNT_dec(PL_incgv);
1065 SvREFCNT_dec(PL_argvgv);
1066 SvREFCNT_dec(PL_replgv);
1067 SvREFCNT_dec(PL_DBgv);
1068 SvREFCNT_dec(PL_DBline);
1069 SvREFCNT_dec(PL_DBsub);
1078 SvREFCNT_dec(PL_argvout_stack);
1079 PL_argvout_stack = NULL;
1081 SvREFCNT_dec(PL_modglobal);
1082 PL_modglobal = NULL;
1083 SvREFCNT_dec(PL_preambleav);
1084 PL_preambleav = NULL;
1085 SvREFCNT_dec(PL_subname);
1087 #ifdef PERL_USES_PL_PIDSTATUS
1088 SvREFCNT_dec(PL_pidstatus);
1089 PL_pidstatus = NULL;
1091 SvREFCNT_dec(PL_toptarget);
1092 PL_toptarget = NULL;
1093 SvREFCNT_dec(PL_bodytarget);
1094 PL_bodytarget = NULL;
1095 PL_formtarget = NULL;
1097 /* free locale stuff */
1098 #ifdef USE_LOCALE_COLLATE
1099 Safefree(PL_collation_name);
1100 PL_collation_name = NULL;
1103 #ifdef USE_LOCALE_NUMERIC
1104 Safefree(PL_numeric_name);
1105 PL_numeric_name = NULL;
1106 SvREFCNT_dec(PL_numeric_radix_sv);
1107 PL_numeric_radix_sv = NULL;
1110 /* clear character classes */
1111 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1112 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1113 PL_utf8_swash_ptrs[i] = NULL;
1115 SvREFCNT_dec(PL_utf8_mark);
1116 SvREFCNT_dec(PL_utf8_toupper);
1117 SvREFCNT_dec(PL_utf8_totitle);
1118 SvREFCNT_dec(PL_utf8_tolower);
1119 SvREFCNT_dec(PL_utf8_tofold);
1120 SvREFCNT_dec(PL_utf8_idstart);
1121 SvREFCNT_dec(PL_utf8_idcont);
1122 SvREFCNT_dec(PL_utf8_foldable);
1123 SvREFCNT_dec(PL_utf8_foldclosures);
1124 SvREFCNT_dec(PL_AboveLatin1);
1125 SvREFCNT_dec(PL_InBitmap);
1126 SvREFCNT_dec(PL_UpperLatin1);
1127 SvREFCNT_dec(PL_Latin1);
1128 SvREFCNT_dec(PL_NonL1NonFinalFold);
1129 SvREFCNT_dec(PL_HasMultiCharFold);
1130 #ifdef USE_LOCALE_CTYPE
1131 SvREFCNT_dec(PL_warn_locale);
1133 PL_utf8_mark = NULL;
1134 PL_utf8_toupper = NULL;
1135 PL_utf8_totitle = NULL;
1136 PL_utf8_tolower = NULL;
1137 PL_utf8_tofold = NULL;
1138 PL_utf8_idstart = NULL;
1139 PL_utf8_idcont = NULL;
1140 PL_utf8_foldclosures = NULL;
1141 PL_AboveLatin1 = NULL;
1143 PL_HasMultiCharFold = NULL;
1144 #ifdef USE_LOCALE_CTYPE
1145 PL_warn_locale = NULL;
1148 PL_NonL1NonFinalFold = NULL;
1149 PL_UpperLatin1 = NULL;
1150 for (i = 0; i < POSIX_CC_COUNT; i++) {
1151 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1152 PL_XPosix_ptrs[i] = NULL;
1154 PL_GCB_invlist = NULL;
1155 PL_LB_invlist = NULL;
1156 PL_SB_invlist = NULL;
1157 PL_WB_invlist = NULL;
1158 PL_Assigned_invlist = NULL;
1160 if (!specialWARN(PL_compiling.cop_warnings))
1161 PerlMemShared_free(PL_compiling.cop_warnings);
1162 PL_compiling.cop_warnings = NULL;
1163 cophh_free(CopHINTHASH_get(&PL_compiling));
1164 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1165 CopFILE_free(&PL_compiling);
1167 /* Prepare to destruct main symbol table. */
1170 /* break ref loop *:: <=> %:: */
1171 (void)hv_deletes(hv, "main::", G_DISCARD);
1174 SvREFCNT_dec(PL_curstname);
1175 PL_curstname = NULL;
1177 /* clear queued errors */
1178 SvREFCNT_dec(PL_errors);
1181 SvREFCNT_dec(PL_isarev);
1184 if (destruct_level >= 2) {
1185 if (PL_scopestack_ix != 0)
1186 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1187 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1188 (long)PL_scopestack_ix);
1189 if (PL_savestack_ix != 0)
1190 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1191 "Unbalanced saves: %ld more saves than restores\n",
1192 (long)PL_savestack_ix);
1193 if (PL_tmps_floor != -1)
1194 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1195 (long)PL_tmps_floor + 1);
1196 if (cxstack_ix != -1)
1197 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1198 (long)cxstack_ix + 1);
1202 SvREFCNT_dec(PL_regex_padav);
1203 PL_regex_padav = NULL;
1204 PL_regex_pad = NULL;
1207 #ifdef PERL_IMPLICIT_CONTEXT
1208 /* the entries in this list are allocated via SV PVX's, so get freed
1209 * in sv_clean_all */
1210 Safefree(PL_my_cxt_list);
1213 /* Now absolutely destruct everything, somehow or other, loops or no. */
1215 /* the 2 is for PL_fdpid and PL_strtab */
1216 while (sv_clean_all() > 2)
1220 Safefree(PL_stashpad); /* must come after sv_clean_all */
1223 AvREAL_off(PL_fdpid); /* no surviving entries */
1224 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1227 #ifdef HAVE_INTERP_INTERN
1231 /* constant strings */
1232 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1233 SvREFCNT_dec(PL_sv_consts[i]);
1234 PL_sv_consts[i] = NULL;
1237 /* Destruct the global string table. */
1239 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1240 * so that sv_free() won't fail on them.
1241 * Now that the global string table is using a single hunk of memory
1242 * for both HE and HEK, we either need to explicitly unshare it the
1243 * correct way, or actually free things here.
1246 const I32 max = HvMAX(PL_strtab);
1247 HE * const * const array = HvARRAY(PL_strtab);
1248 HE *hent = array[0];
1251 if (hent && ckWARN_d(WARN_INTERNAL)) {
1252 HE * const next = HeNEXT(hent);
1253 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1254 "Unbalanced string table refcount: (%ld) for \"%s\"",
1255 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1262 hent = array[riter];
1267 HvARRAY(PL_strtab) = 0;
1268 HvTOTALKEYS(PL_strtab) = 0;
1270 SvREFCNT_dec(PL_strtab);
1273 /* free the pointer tables used for cloning */
1274 ptr_table_free(PL_ptr_table);
1275 PL_ptr_table = (PTR_TBL_t*)NULL;
1278 /* free special SVs */
1280 SvREFCNT(&PL_sv_yes) = 0;
1281 sv_clear(&PL_sv_yes);
1282 SvANY(&PL_sv_yes) = NULL;
1283 SvFLAGS(&PL_sv_yes) = 0;
1285 SvREFCNT(&PL_sv_no) = 0;
1286 sv_clear(&PL_sv_no);
1287 SvANY(&PL_sv_no) = NULL;
1288 SvFLAGS(&PL_sv_no) = 0;
1292 for (i=0; i<=2; i++) {
1293 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1294 sv_clear(PERL_DEBUG_PAD(i));
1295 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1296 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1300 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1301 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1303 #ifdef DEBUG_LEAKING_SCALARS
1304 if (PL_sv_count != 0) {
1309 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1310 svend = &sva[SvREFCNT(sva)];
1311 for (sv = sva + 1; sv < svend; ++sv) {
1312 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1313 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1315 " refcnt=%"UVuf pTHX__FORMAT "\n"
1316 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1317 "serial %" UVuf "\n",
1318 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1320 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1322 sv->sv_debug_inpad ? "for" : "by",
1323 sv->sv_debug_optype ?
1324 PL_op_name[sv->sv_debug_optype]: "(none)",
1325 PTR2UV(sv->sv_debug_parent),
1328 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1329 Perl_dump_sv_child(aTHX_ sv);
1335 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1339 /* Wait for up to 4 seconds for child to terminate.
1340 This seems to be the least effort way of timing out on reaping
1342 struct timeval waitfor = {4, 0};
1343 int sock = PL_dumper_fd;
1347 FD_SET(sock, &rset);
1348 select(sock + 1, &rset, NULL, NULL, &waitfor);
1349 waitpid(child, &status, WNOHANG);
1354 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1360 #if defined(PERLIO_LAYERS)
1361 /* No more IO - including error messages ! */
1362 PerlIO_cleanup(aTHX);
1365 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1366 as currently layers use it rather than NULL as a marker
1367 for no arg - and will try and SvREFCNT_dec it.
1369 SvREFCNT(&PL_sv_undef) = 0;
1370 SvREADONLY_off(&PL_sv_undef);
1372 Safefree(PL_origfilename);
1373 PL_origfilename = NULL;
1374 Safefree(PL_reg_curpm);
1375 free_tied_hv_pool();
1376 Safefree(PL_op_mask);
1377 Safefree(PL_psig_name);
1378 PL_psig_name = (SV**)NULL;
1379 PL_psig_ptr = (SV**)NULL;
1381 /* We need to NULL PL_psig_pend first, so that
1382 signal handlers know not to use it */
1383 int *psig_save = PL_psig_pend;
1384 PL_psig_pend = (int*)NULL;
1385 Safefree(psig_save);
1388 TAINTING_set(FALSE);
1389 TAINT_WARN_set(FALSE);
1390 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1392 DEBUG_P(debprofdump());
1396 #ifdef USE_REENTRANT_API
1397 Perl_reentrant_free(aTHX);
1400 /* These all point to HVs that are about to be blown away.
1401 Code in core and on CPAN assumes that if the interpreter is re-started
1402 that they will be cleanly NULL or pointing to a valid HV. */
1403 PL_custom_op_names = NULL;
1404 PL_custom_op_descs = NULL;
1405 PL_custom_ops = NULL;
1409 while (PL_regmatch_slab) {
1410 regmatch_slab *s = PL_regmatch_slab;
1411 PL_regmatch_slab = PL_regmatch_slab->next;
1415 /* As the absolutely last thing, free the non-arena SV for mess() */
1418 /* we know that type == SVt_PVMG */
1420 /* it could have accumulated taint magic */
1423 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1424 moremagic = mg->mg_moremagic;
1425 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1427 Safefree(mg->mg_ptr);
1431 /* we know that type >= SVt_PV */
1432 SvPV_free(PL_mess_sv);
1433 Safefree(SvANY(PL_mess_sv));
1434 Safefree(PL_mess_sv);
1441 =for apidoc perl_free
1443 Releases a Perl interpreter. See L<perlembed>.
1453 PERL_ARGS_ASSERT_PERL_FREE;
1455 if (PL_veto_cleanup)
1458 #ifdef PERL_TRACK_MEMPOOL
1461 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1462 * value as we're probably hunting memory leaks then
1464 if (PL_perl_destruct_level == 0) {
1465 const U32 old_debug = PL_debug;
1466 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1467 thread at thread exit. */
1469 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1470 "free this thread's memory\n");
1471 PL_debug &= ~ DEBUG_m_FLAG;
1473 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1474 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1475 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1478 PL_debug = old_debug;
1483 #if defined(WIN32) || defined(NETWARE)
1484 # if defined(PERL_IMPLICIT_SYS)
1487 void *host = nw_internal_host;
1488 PerlMem_free(aTHXx);
1489 nw_delete_internal_host(host);
1491 void *host = w32_internal_host;
1492 PerlMem_free(aTHXx);
1493 win32_delete_internal_host(host);
1497 PerlMem_free(aTHXx);
1500 PerlMem_free(aTHXx);
1504 #if defined(USE_ITHREADS)
1505 /* provide destructors to clean up the thread key when libperl is unloaded */
1506 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1508 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1509 #pragma fini "perl_fini"
1510 #elif defined(__sun) && !defined(__GNUC__)
1511 #pragma fini (perl_fini)
1515 #if defined(__GNUC__)
1516 __attribute__((destructor))
1522 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1525 PL_curinterp && !PL_veto_cleanup)
1530 #endif /* THREADS */
1533 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1535 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1536 PL_exitlist[PL_exitlistlen].fn = fn;
1537 PL_exitlist[PL_exitlistlen].ptr = ptr;
1542 =for apidoc perl_parse
1544 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1549 #define SET_CURSTASH(newstash) \
1550 if (PL_curstash != newstash) { \
1551 SvREFCNT_dec(PL_curstash); \
1552 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1556 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1563 PERL_ARGS_ASSERT_PERL_PARSE;
1564 #ifndef MULTIPLICITY
1565 PERL_UNUSED_ARG(my_perl);
1567 #if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
1569 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1571 if (s && strEQ(s, "1")) {
1572 const unsigned char *seed= PERL_HASH_SEED;
1573 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1574 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1575 while (seed < seed_end) {
1576 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1578 #ifdef PERL_HASH_RANDOMIZE_KEYS
1579 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1580 PL_HASH_RAND_BITS_ENABLED,
1581 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1583 PerlIO_printf(Perl_debug_log, "\n");
1586 #endif /* #if (defined(USE_HASH_SEED) ... */
1590 struct NameTranslationInfo nti;
1591 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1598 if (PL_origalen != 0) {
1599 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1602 /* Set PL_origalen be the sum of the contiguous argv[]
1603 * elements plus the size of the env in case that it is
1604 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1605 * as the maximum modifiable length of $0. In the worst case
1606 * the area we are able to modify is limited to the size of
1607 * the original argv[0]. (See below for 'contiguous', though.)
1609 const char *s = NULL;
1610 const UV mask = ~(UV)(PTRSIZE-1);
1611 /* Do the mask check only if the args seem like aligned. */
1613 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1615 /* See if all the arguments are contiguous in memory. Note
1616 * that 'contiguous' is a loose term because some platforms
1617 * align the argv[] and the envp[]. If the arguments look
1618 * like non-aligned, assume that they are 'strictly' or
1619 * 'traditionally' contiguous. If the arguments look like
1620 * aligned, we just check that they are within aligned
1621 * PTRSIZE bytes. As long as no system has something bizarre
1622 * like the argv[] interleaved with some other data, we are
1623 * fine. (Did I just evoke Murphy's Law?) --jhi */
1624 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1627 for (i = 1; i < PL_origargc; i++) {
1628 if ((PL_origargv[i] == s + 1
1630 || PL_origargv[i] == s + 2
1635 (PL_origargv[i] > s &&
1637 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1648 #ifndef PERL_USE_SAFE_PUTENV
1649 /* Can we grab env area too to be used as the area for $0? */
1650 if (s && PL_origenviron && !PL_use_safe_putenv) {
1651 if ((PL_origenviron[0] == s + 1)
1654 (PL_origenviron[0] > s &&
1655 PL_origenviron[0] <=
1656 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1660 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1661 s = PL_origenviron[0];
1664 my_setenv("NoNe SuCh", NULL);
1665 /* Force copy of environment. */
1666 for (i = 1; PL_origenviron[i]; i++) {
1667 if (PL_origenviron[i] == s + 1
1670 (PL_origenviron[i] > s &&
1671 PL_origenviron[i] <=
1672 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1675 s = PL_origenviron[i];
1683 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1685 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1690 /* Come here if running an undumped a.out. */
1692 PL_origfilename = savepv(argv[0]);
1693 PL_do_undump = FALSE;
1694 cxstack_ix = -1; /* start label stack again */
1696 assert (!TAINT_get);
1700 init_postdump_symbols(argc,argv,env);
1705 op_free(PL_main_root);
1706 PL_main_root = NULL;
1708 PL_main_start = NULL;
1709 SvREFCNT_dec(PL_main_cv);
1713 oldscope = PL_scopestack_ix;
1714 PL_dowarn = G_WARN_OFF;
1719 parse_body(env,xsinit);
1720 if (PL_unitcheckav) {
1721 call_list(oldscope, PL_unitcheckav);
1724 PERL_SET_PHASE(PERL_PHASE_CHECK);
1725 call_list(oldscope, PL_checkav);
1733 /* my_exit() was called */
1734 while (PL_scopestack_ix > oldscope)
1737 SET_CURSTASH(PL_defstash);
1738 if (PL_unitcheckav) {
1739 call_list(oldscope, PL_unitcheckav);
1742 PERL_SET_PHASE(PERL_PHASE_CHECK);
1743 call_list(oldscope, PL_checkav);
1748 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1756 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1757 miniperl, and we need to see those flags reflected in the values here. */
1759 /* What this returns is subject to change. Use the public interface in Config.
1762 S_Internals_V(pTHX_ CV *cv)
1765 #ifdef LOCAL_PATCH_COUNT
1766 const int local_patch_count = LOCAL_PATCH_COUNT;
1768 const int local_patch_count = 0;
1770 const int entries = 3 + local_patch_count;
1772 static const char non_bincompat_options[] =
1779 # ifdef NO_HASH_SEED
1782 # ifdef NO_TAINT_SUPPORT
1785 # ifdef PERL_BOOL_AS_CHAR
1786 " PERL_BOOL_AS_CHAR"
1788 # ifdef PERL_COPY_ON_WRITE
1789 " PERL_COPY_ON_WRITE"
1791 # ifdef PERL_DISABLE_PMC
1794 # ifdef PERL_DONT_CREATE_GVSV
1795 " PERL_DONT_CREATE_GVSV"
1797 # ifdef PERL_EXTERNAL_GLOB
1798 " PERL_EXTERNAL_GLOB"
1800 # ifdef PERL_HASH_FUNC_SIPHASH
1801 " PERL_HASH_FUNC_SIPHASH"
1803 # ifdef PERL_HASH_FUNC_SDBM
1804 " PERL_HASH_FUNC_SDBM"
1806 # ifdef PERL_HASH_FUNC_DJB2
1807 " PERL_HASH_FUNC_DJB2"
1809 # ifdef PERL_HASH_FUNC_SUPERFAST
1810 " PERL_HASH_FUNC_SUPERFAST"
1812 # ifdef PERL_HASH_FUNC_MURMUR3
1813 " PERL_HASH_FUNC_MURMUR3"
1815 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1816 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1818 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1819 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1821 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1822 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1824 # ifdef PERL_IS_MINIPERL
1827 # ifdef PERL_MALLOC_WRAP
1830 # ifdef PERL_MEM_LOG
1833 # ifdef PERL_MEM_LOG_NOIMPL
1834 " PERL_MEM_LOG_NOIMPL"
1836 # ifdef PERL_OP_PARENT
1839 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1840 " PERL_PERTURB_KEYS_DETERMINISTIC"
1842 # ifdef PERL_PERTURB_KEYS_DISABLED
1843 " PERL_PERTURB_KEYS_DISABLED"
1845 # ifdef PERL_PERTURB_KEYS_RANDOM
1846 " PERL_PERTURB_KEYS_RANDOM"
1848 # ifdef PERL_PRESERVE_IVUV
1849 " PERL_PRESERVE_IVUV"
1851 # ifdef PERL_RELOCATABLE_INCPUSH
1852 " PERL_RELOCATABLE_INCPUSH"
1854 # ifdef PERL_USE_DEVEL
1857 # ifdef PERL_USE_SAFE_PUTENV
1858 " PERL_USE_SAFE_PUTENV"
1860 # ifdef SILENT_NO_TAINT_SUPPORT
1861 " SILENT_NO_TAINT_SUPPORT"
1863 # ifdef UNLINK_ALL_VERSIONS
1864 " UNLINK_ALL_VERSIONS"
1866 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1867 " USE_ATTRIBUTES_FOR_PERLIO"
1869 # ifdef USE_FAST_STDIO
1875 # ifdef USE_LOCALE_CTYPE
1878 # ifdef WIN32_NO_REGISTRY
1881 # ifdef USE_PERL_ATOF
1884 # ifdef USE_SITECUSTOMIZE
1885 " USE_SITECUSTOMIZE"
1888 PERL_UNUSED_ARG(cv);
1889 PERL_UNUSED_VAR(items);
1891 EXTEND(SP, entries);
1893 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1894 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1895 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1897 #ifndef PERL_BUILD_DATE
1900 # define PERL_BUILD_DATE __DATE__ " " __TIME__
1902 # define PERL_BUILD_DATE __DATE__
1907 #ifdef PERL_BUILD_DATE
1908 PUSHs(Perl_newSVpvn_flags(aTHX_
1909 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
1912 PUSHs(&PL_sv_undef);
1915 for (i = 1; i <= local_patch_count; i++) {
1916 /* This will be an undef, if PL_localpatches[i] is NULL. */
1917 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1923 #define INCPUSH_UNSHIFT 0x01
1924 #define INCPUSH_ADD_OLD_VERS 0x02
1925 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1926 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1927 #define INCPUSH_NOT_BASEDIR 0x10
1928 #define INCPUSH_CAN_RELOCATE 0x20
1929 #define INCPUSH_ADD_SUB_DIRS \
1930 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1933 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1937 int argc = PL_origargc;
1938 char **argv = PL_origargv;
1939 const char *scriptname = NULL;
1940 bool dosearch = FALSE;
1942 bool doextract = FALSE;
1943 const char *cddir = NULL;
1944 #ifdef USE_SITECUSTOMIZE
1945 bool minus_f = FALSE;
1947 SV *linestr_sv = NULL;
1948 bool add_read_e_script = FALSE;
1949 U32 lex_start_flags = 0;
1951 PERL_SET_PHASE(PERL_PHASE_START);
1957 for (argc--,argv++; argc > 0; argc--,argv++) {
1958 if (argv[0][0] != '-' || !argv[0][1])
1964 #ifndef PERL_STRICT_CR
1988 if ((s = moreswitches(s)))
1993 #if defined(SILENT_NO_TAINT_SUPPORT)
1994 /* silently ignore */
1995 #elif defined(NO_TAINT_SUPPORT)
1996 Perl_croak_nocontext("This perl was compiled without taint support. "
1997 "Cowardly refusing to run with -t or -T flags");
1999 CHECK_MALLOC_TOO_LATE_FOR('t');
2000 if( !TAINTING_get ) {
2001 TAINT_WARN_set(TRUE);
2008 #if defined(SILENT_NO_TAINT_SUPPORT)
2009 /* silently ignore */
2010 #elif defined(NO_TAINT_SUPPORT)
2011 Perl_croak_nocontext("This perl was compiled without taint support. "
2012 "Cowardly refusing to run with -t or -T flags");
2014 CHECK_MALLOC_TOO_LATE_FOR('T');
2016 TAINT_WARN_set(FALSE);
2025 forbid_setid('e', FALSE);
2027 PL_e_script = newSVpvs("");
2028 add_read_e_script = TRUE;
2031 sv_catpv(PL_e_script, s);
2033 sv_catpv(PL_e_script, argv[1]);
2037 Perl_croak(aTHX_ "No code specified for -%c", c);
2038 sv_catpvs(PL_e_script, "\n");
2042 #ifdef USE_SITECUSTOMIZE
2048 case 'I': /* -I handled both here and in moreswitches() */
2049 forbid_setid('I', FALSE);
2050 if (!*++s && (s=argv[1]) != NULL) {
2054 STRLEN len = strlen(s);
2055 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
2058 Perl_croak(aTHX_ "No directory specified for -I");
2061 forbid_setid('S', FALSE);
2070 opts_prog = newSVpvs("use Config; Config::_V()");
2074 opts_prog = Perl_newSVpvf(aTHX_
2075 "use Config; Config::config_vars(qw%c%s%c)",
2079 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2080 /* don't look for script or read stdin */
2081 scriptname = BIT_BUCKET;
2093 if (!*++s || isSPACE(*s)) {
2097 /* catch use of gnu style long options.
2098 Both of these exit immediately. */
2099 if (strEQ(s, "version"))
2101 if (strEQ(s, "help"))
2106 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2117 #ifndef SECURE_INTERNAL_GETENV
2120 (s = PerlEnv_getenv("PERL5OPT")))
2122 /* s points to static memory in getenv(), which may be overwritten at
2123 * any time; use a mortal copy instead */
2124 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2128 if (*s == '-' && *(s+1) == 'T') {
2129 #if defined(SILENT_NO_TAINT_SUPPORT)
2130 /* silently ignore */
2131 #elif defined(NO_TAINT_SUPPORT)
2132 Perl_croak_nocontext("This perl was compiled without taint support. "
2133 "Cowardly refusing to run with -t or -T flags");
2135 CHECK_MALLOC_TOO_LATE_FOR('T');
2137 TAINT_WARN_set(FALSE);
2141 char *popt_copy = NULL;
2154 if (!strchr("CDIMUdmtwW", *s))
2155 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2159 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2160 s = popt_copy + (s - d);
2168 #if defined(SILENT_NO_TAINT_SUPPORT)
2169 /* silently ignore */
2170 #elif defined(NO_TAINT_SUPPORT)
2171 Perl_croak_nocontext("This perl was compiled without taint support. "
2172 "Cowardly refusing to run with -t or -T flags");
2174 if( !TAINTING_get) {
2175 TAINT_WARN_set(TRUE);
2187 /* Set $^X early so that it can be used for relocatable paths in @INC */
2188 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2189 assert (!TAINT_get);
2194 #if defined(USE_SITECUSTOMIZE)
2196 /* The games with local $! are to avoid setting errno if there is no
2197 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2198 ie a q() operator with a NUL byte as a the delimiter. This avoids
2199 problems with pathnames containing (say) ' */
2200 # ifdef PERL_IS_MINIPERL
2201 AV *const inc = GvAV(PL_incgv);
2202 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2205 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2206 it should be reported immediately as a build failure. */
2207 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2209 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
2210 "do {local $!; -f $f }"
2211 " and do $f || die $@ || qq '$f: $!' }",
2212 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
2215 /* SITELIB_EXP is a function call on Win32. */
2216 const char *const raw_sitelib = SITELIB_EXP;
2218 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2219 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2220 INCPUSH_CAN_RELOCATE);
2221 const char *const sitelib = SvPVX(sitelib_sv);
2222 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2224 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2225 0, SVfARG(sitelib), 0,
2226 0, SVfARG(sitelib), 0));
2227 assert (SvREFCNT(sitelib_sv) == 1);
2228 SvREFCNT_dec(sitelib_sv);
2235 scriptname = argv[0];
2238 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2240 else if (scriptname == NULL) {
2242 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2248 assert (!TAINT_get);
2252 bool suidscript = FALSE;
2254 rsfp = open_script(scriptname, dosearch, &suidscript);
2256 rsfp = PerlIO_stdin();
2257 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2260 validate_suid(rsfp);
2263 # if defined(SIGCHLD) || defined(SIGCLD)
2266 # define SIGCHLD SIGCLD
2268 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2269 if (sigstate == (Sighandler_t) SIG_IGN) {
2270 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2271 "Can't ignore signal CHLD, forcing to default");
2272 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2280 /* This will croak if suidscript is true, as -x cannot be used with
2282 forbid_setid('x', suidscript);
2283 /* Hence you can't get here if suidscript is true */
2285 linestr_sv = newSV_type(SVt_PV);
2286 lex_start_flags |= LEX_START_COPIED;
2287 find_beginning(linestr_sv, rsfp);
2288 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2289 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2293 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2294 CvUNIQUE_on(PL_compcv);
2296 CvPADLIST_set(PL_compcv, pad_new(0));
2298 PL_isarev = newHV();
2301 boot_core_UNIVERSAL();
2303 newXS("Internals::V", S_Internals_V, __FILE__);
2306 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2308 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2314 # ifdef HAS_SOCKS5_INIT
2315 socks5_init(argv[0]);
2321 init_predump_symbols();
2322 /* init_postdump_symbols not currently designed to be called */
2323 /* more than once (ENV isn't cleared first, for example) */
2324 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2326 init_postdump_symbols(argc,argv,env);
2328 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2329 * or explicitly in some platforms.
2330 * PL_utf8locale is conditionally turned on by
2331 * locale.c:Perl_init_i18nl10n() if the environment
2332 * look like the user wants to use UTF-8. */
2333 #if defined(__SYMBIAN32__)
2334 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2336 # ifndef PERL_IS_MINIPERL
2338 /* Requires init_predump_symbols(). */
2339 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2344 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2345 * and the default open disciplines. */
2346 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2347 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2349 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2350 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2351 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2353 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2354 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2355 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2357 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2358 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2359 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2361 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2362 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2365 sv_setpvs(sv, ":utf8\0:utf8");
2367 sv_setpvs(sv, ":utf8\0");
2370 sv_setpvs(sv, "\0:utf8");
2379 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2380 if (strEQ(s, "unsafe"))
2381 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2382 else if (strEQ(s, "safe"))
2383 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2385 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2390 lex_start(linestr_sv, rsfp, lex_start_flags);
2391 SvREFCNT_dec(linestr_sv);
2393 PL_subname = newSVpvs("main");
2395 if (add_read_e_script)
2396 filter_add(read_e_script, NULL);
2398 /* now parse the script */
2400 SETERRNO(0,SS_NORMAL);
2401 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2402 abort_execution("", PL_origfilename);
2404 CopLINE_set(PL_curcop, 0);
2405 SET_CURSTASH(PL_defstash);
2407 SvREFCNT_dec(PL_e_script);
2415 SAVECOPFILE(PL_curcop);
2416 SAVECOPLINE(PL_curcop);
2417 gv_check(PL_defstash);
2427 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2428 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
2429 dump_mstats("after compilation:");
2434 PL_restartjmpenv = NULL;
2440 =for apidoc perl_run
2442 Tells a Perl interpreter to run. See L<perlembed>.
2454 PERL_ARGS_ASSERT_PERL_RUN;
2455 #ifndef MULTIPLICITY
2456 PERL_UNUSED_ARG(my_perl);
2459 oldscope = PL_scopestack_ix;
2467 cxstack_ix = -1; /* start context stack again */
2469 case 0: /* normal completion */
2473 case 2: /* my_exit() */
2474 while (PL_scopestack_ix > oldscope)
2477 SET_CURSTASH(PL_defstash);
2478 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2479 PL_endav && !PL_minus_c) {
2480 PERL_SET_PHASE(PERL_PHASE_END);
2481 call_list(oldscope, PL_endav);
2484 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2485 dump_mstats("after execution: ");
2491 POPSTACK_TO(PL_mainstack);
2494 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2505 S_run_body(pTHX_ I32 oldscope)
2507 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2508 PL_sawampersand ? "Enabling" : "Omitting",
2509 (unsigned int)(PL_sawampersand)));
2511 if (!PL_restartop) {
2513 if (DEBUG_x_TEST || DEBUG_B_TEST)
2514 dump_all_perl(!DEBUG_B_TEST);
2516 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2520 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2523 if (PERLDB_SINGLE && PL_DBsingle)
2526 PERL_SET_PHASE(PERL_PHASE_INIT);
2527 call_list(oldscope, PL_initav);
2529 #ifdef PERL_DEBUG_READONLY_OPS
2530 if (PL_main_root && PL_main_root->op_slabbed)
2531 Slab_to_ro(OpSLAB(PL_main_root));
2537 PERL_SET_PHASE(PERL_PHASE_RUN);
2540 PL_restartjmpenv = NULL;
2541 PL_op = PL_restartop;
2545 else if (PL_main_start) {
2546 CvDEPTH(PL_main_cv) = 1;
2547 PL_op = PL_main_start;
2551 NOT_REACHED; /* NOTREACHED */
2555 =head1 SV Manipulation Functions
2557 =for apidoc p||get_sv
2559 Returns the SV of the specified Perl scalar. C<flags> are passed to
2560 C<gv_fetchpv>. If C<GV_ADD> is set and the
2561 Perl variable does not exist then it will be created. If C<flags> is zero
2562 and the variable does not exist then NULL is returned.
2568 Perl_get_sv(pTHX_ const char *name, I32 flags)
2572 PERL_ARGS_ASSERT_GET_SV;
2574 gv = gv_fetchpv(name, flags, SVt_PV);
2581 =head1 Array Manipulation Functions
2583 =for apidoc p||get_av
2585 Returns the AV of the specified Perl global or package array with the given
2586 name (so it won't work on lexical variables). C<flags> are passed
2587 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2588 Perl variable does not exist then it will be created. If C<flags> is zero
2589 and the variable does not exist then NULL is returned.
2591 Perl equivalent: C<@{"$name"}>.
2597 Perl_get_av(pTHX_ const char *name, I32 flags)
2599 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2601 PERL_ARGS_ASSERT_GET_AV;
2611 =head1 Hash Manipulation Functions
2613 =for apidoc p||get_hv
2615 Returns the HV of the specified Perl hash. C<flags> are passed to
2616 C<gv_fetchpv>. If C<GV_ADD> is set and the
2617 Perl variable does not exist then it will be created. If C<flags> is zero
2618 and the variable does not exist then C<NULL> is returned.
2624 Perl_get_hv(pTHX_ const char *name, I32 flags)
2626 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2628 PERL_ARGS_ASSERT_GET_HV;
2638 =head1 CV Manipulation Functions
2640 =for apidoc p||get_cvn_flags
2642 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2643 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2644 exist then it will be declared (which has the same effect as saying
2645 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2646 then NULL is returned.
2648 =for apidoc p||get_cv
2650 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2656 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2658 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2660 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2662 /* XXX this is probably not what they think they're getting.
2663 * It has the same effect as "sub name;", i.e. just a forward
2665 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2666 return newSTUB(gv,0);
2673 /* Nothing in core calls this now, but we can't replace it with a macro and
2674 move it to mathoms.c as a macro would evaluate name twice. */
2676 Perl_get_cv(pTHX_ const char *name, I32 flags)
2678 PERL_ARGS_ASSERT_GET_CV;
2680 return get_cvn_flags(name, strlen(name), flags);
2683 /* Be sure to refetch the stack pointer after calling these routines. */
2687 =head1 Callback Functions
2689 =for apidoc p||call_argv
2691 Performs a callback to the specified named and package-scoped Perl subroutine
2692 with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
2695 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2701 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2703 /* See G_* flags in cop.h */
2704 /* null terminated arg list */
2708 PERL_ARGS_ASSERT_CALL_ARGV;
2712 mXPUSHs(newSVpv(*argv,0));
2716 return call_pv(sub_name, flags);
2720 =for apidoc p||call_pv
2722 Performs a callback to the specified Perl sub. See L<perlcall>.
2728 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2729 /* name of the subroutine */
2730 /* See G_* flags in cop.h */
2732 PERL_ARGS_ASSERT_CALL_PV;
2734 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2738 =for apidoc p||call_method
2740 Performs a callback to the specified Perl method. The blessed object must
2741 be on the stack. See L<perlcall>.
2747 Perl_call_method(pTHX_ const char *methname, I32 flags)
2748 /* name of the subroutine */
2749 /* See G_* flags in cop.h */
2753 PERL_ARGS_ASSERT_CALL_METHOD;
2755 len = strlen(methname);
2756 sv = flags & G_METHOD_NAMED
2757 ? sv_2mortal(newSVpvn_share(methname, len,0))
2758 : newSVpvn_flags(methname, len, SVs_TEMP);
2760 return call_sv(sv, flags | G_METHOD);
2763 /* May be called with any of a CV, a GV, or an SV containing the name. */
2765 =for apidoc p||call_sv
2767 Performs a callback to the Perl sub specified by the SV.
2769 If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
2770 SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2771 or C<SvPV(sv)> will be used as the name of the sub to call.
2773 If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2774 C<SvPV(sv)> will be used as the name of the method to call.
2776 If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2777 the name of the method to call.
2779 Some other values are treated specially for internal use and should
2788 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2789 /* See G_* flags in cop.h */
2792 LOGOP myop; /* fake syntax tree node */
2796 bool oldcatch = CATCH_GET;
2798 OP* const oldop = PL_op;
2801 PERL_ARGS_ASSERT_CALL_SV;
2803 if (flags & G_DISCARD) {
2807 if (!(flags & G_WANT)) {
2808 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2813 Zero(&myop, 1, LOGOP);
2814 if (!(flags & G_NOARGS))
2815 myop.op_flags |= OPf_STACKED;
2816 myop.op_flags |= OP_GIMME_REVERSE(flags);
2820 if (!(flags & G_METHOD_NAMED)) {
2828 if (PERLDB_SUB && PL_curstash != PL_debstash
2829 /* Handle first BEGIN of -d. */
2830 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2831 /* Try harder, since this may have been a sighandler, thus
2832 * curstash may be meaningless. */
2833 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2834 && !(flags & G_NODEBUG))
2835 myop.op_private |= OPpENTERSUB_DB;
2837 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2838 Zero(&method_op, 1, METHOP);
2839 method_op.op_next = (OP*)&myop;
2840 PL_op = (OP*)&method_op;
2841 if ( flags & G_METHOD_NAMED ) {
2842 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2843 method_op.op_type = OP_METHOD_NAMED;
2844 method_op.op_u.op_meth_sv = sv;
2846 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2847 method_op.op_type = OP_METHOD;
2849 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2850 myop.op_type = OP_ENTERSUB;
2853 if (!(flags & G_EVAL)) {
2855 CALL_BODY_SUB((OP*)&myop);
2856 retval = PL_stack_sp - (PL_stack_base + oldmark);
2857 CATCH_SET(oldcatch);
2861 myop.op_other = (OP*)&myop;
2863 old_cxix = cxstack_ix;
2864 create_eval_scope(NULL, flags|G_FAKINGEVAL);
2872 CALL_BODY_SUB((OP*)&myop);
2873 retval = PL_stack_sp - (PL_stack_base + oldmark);
2874 if (!(flags & G_KEEPERR)) {
2882 /* my_exit() was called */
2883 SET_CURSTASH(PL_defstash);
2887 NOT_REACHED; /* NOTREACHED */
2890 PL_restartjmpenv = NULL;
2891 PL_op = PL_restartop;
2895 PL_stack_sp = PL_stack_base + oldmark;
2896 if ((flags & G_WANT) == G_ARRAY)
2900 *++PL_stack_sp = &PL_sv_undef;
2905 /* if we croaked, depending on how we croaked the eval scope
2906 * may or may not have already been popped */
2907 if (cxstack_ix > old_cxix) {
2908 assert(cxstack_ix == old_cxix + 1);
2909 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
2910 delete_eval_scope();
2915 if (flags & G_DISCARD) {
2916 PL_stack_sp = PL_stack_base + oldmark;
2925 /* Eval a string. The G_EVAL flag is always assumed. */
2928 =for apidoc p||eval_sv
2930 Tells Perl to C<eval> the string in the SV. It supports the same flags
2931 as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
2937 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2939 /* See G_* flags in cop.h */
2942 UNOP myop; /* fake syntax tree node */
2946 OP* const oldop = PL_op;
2949 PERL_ARGS_ASSERT_EVAL_SV;
2951 if (flags & G_DISCARD) {
2958 Zero(&myop, 1, UNOP);
2961 oldmark = SP - PL_stack_base;
2967 if (!(flags & G_NOARGS))
2968 myop.op_flags = OPf_STACKED;
2969 myop.op_type = OP_ENTEREVAL;
2970 myop.op_flags |= OP_GIMME_REVERSE(flags);
2971 if (flags & G_KEEPERR)
2972 myop.op_flags |= OPf_SPECIAL;
2974 if (flags & G_RE_REPARSING)
2975 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2977 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2978 * before a cx_pusheval(), which corrupts the stack after a croak */
2979 TAINT_PROPER("eval_sv()");
2985 if (PL_op == (OP*)(&myop)) {
2986 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2988 goto fail; /* failed in compilation */
2991 retval = PL_stack_sp - (PL_stack_base + oldmark);
2992 if (!(flags & G_KEEPERR)) {
3000 /* my_exit() was called */
3001 SET_CURSTASH(PL_defstash);
3005 NOT_REACHED; /* NOTREACHED */
3008 PL_restartjmpenv = NULL;
3009 PL_op = PL_restartop;
3014 PL_stack_sp = PL_stack_base + oldmark;
3015 if ((flags & G_WANT) == G_ARRAY)
3019 *++PL_stack_sp = &PL_sv_undef;
3025 if (flags & G_DISCARD) {
3026 PL_stack_sp = PL_stack_base + oldmark;
3036 =for apidoc p||eval_pv
3038 Tells Perl to C<eval> the given string in scalar context and return an SV* result.
3044 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
3046 SV* sv = newSVpv(p, 0);
3048 PERL_ARGS_ASSERT_EVAL_PV;
3050 eval_sv(sv, G_SCALAR);
3059 /* just check empty string or undef? */
3060 if (croak_on_error) {
3061 SV * const errsv = ERRSV;
3062 if(SvTRUE_NN(errsv))
3063 /* replace with croak_sv? */
3064 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3070 /* Require a module. */
3073 =head1 Embedding Functions
3075 =for apidoc p||require_pv
3077 Tells Perl to C<require> the file named by the string argument. It is
3078 analogous to the Perl code C<eval "require '$file'">. It's even
3079 implemented that way; consider using load_module instead.
3084 Perl_require_pv(pTHX_ const char *pv)
3089 PERL_ARGS_ASSERT_REQUIRE_PV;
3091 PUSHSTACKi(PERLSI_REQUIRE);
3092 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3093 eval_sv(sv_2mortal(sv), G_DISCARD);
3098 S_usage(pTHX) /* XXX move this out into a module ? */
3100 /* This message really ought to be max 23 lines.
3101 * Removed -h because the user already knows that option. Others? */
3103 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3104 minimum of 509 character string literals. */
3105 static const char * const usage_msg[] = {
3106 " -0[octal] specify record separator (\\0, if no argument)\n"
3107 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3108 " -C[number/list] enables the listed Unicode features\n"
3109 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3110 " -d[:debugger] run program under debugger\n"
3111 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3112 " -e program one line of program (several -e's allowed, omit programfile)\n"
3113 " -E program like -e, but enables all optional features\n"
3114 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3115 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3116 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3117 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3118 " -l[octal] enable line ending processing, specifies line terminator\n"
3119 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3120 " -n assume \"while (<>) { ... }\" loop around program\n"
3121 " -p assume loop like -n but print line also, like sed\n"
3122 " -s enable rudimentary parsing for switches after programfile\n"
3123 " -S look for programfile using PATH environment variable\n",
3124 " -t enable tainting warnings\n"
3125 " -T enable tainting checks\n"
3126 " -u dump core after parsing program\n"
3127 " -U allow unsafe operations\n"
3128 " -v print version, patchlevel and license\n"
3129 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3130 " -w enable many useful warnings\n"
3131 " -W enable all warnings\n"
3132 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3133 " -X disable all warnings\n"
3135 "Run 'perldoc perl' for more help with Perl.\n\n",
3138 const char * const *p = usage_msg;
3139 PerlIO *out = PerlIO_stdout();
3142 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3145 PerlIO_puts(out, *p++);
3149 /* convert a string of -D options (or digits) into an int.
3150 * sets *s to point to the char after the options */
3154 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3156 static const char * const usage_msgd[] = {
3157 " Debugging flag values: (see also -d)\n"
3158 " p Tokenizing and parsing (with v, displays parse stack)\n"
3159 " s Stack snapshots (with v, displays all stacks)\n"
3160 " l Context (loop) stack processing\n"
3161 " t Trace execution\n"
3162 " o Method and overloading resolution\n",
3163 " c String/numeric conversions\n"
3164 " P Print profiling info, source file input state\n"
3165 " m Memory and SV allocation\n"
3166 " f Format processing\n"
3167 " r Regular expression parsing and execution\n"
3168 " x Syntax tree dump\n",
3169 " u Tainting checks\n"
3170 " H Hash dump -- usurps values()\n"
3171 " X Scratchpad allocation\n"
3173 " S Op slab allocation\n"
3175 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3176 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3177 " v Verbose: use in conjunction with other flags\n"
3178 " C Copy On Write\n"
3179 " A Consistency checks on internal structures\n"
3180 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3181 " M trace smart match resolution\n"
3182 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3183 " L trace some locale setting information--for Perl core development\n",
3184 " i trace PerlIO layer processing\n",
3189 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3192 /* if adding extra options, remember to update DEBUG_MASK */
3193 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
3195 for (; isWORDCHAR(**s); (*s)++) {
3196 const char * const d = strchr(debopts,**s);
3198 uv |= 1 << (d - debopts);
3199 else if (ckWARN_d(WARN_DEBUGGING))
3200 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3201 "invalid option -D%c, use -D'' to see choices\n", **s);
3204 else if (isDIGIT(**s)) {
3206 if (grok_atoUV(*s, &uv, &e))
3208 for (; isWORDCHAR(**s); (*s)++) ;
3210 else if (givehelp) {
3211 const char *const *p = usage_msgd;
3212 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3214 return (int)uv; /* ignore any UV->int conversion loss */
3218 /* This routine handles any switches that can be given during run */
3221 Perl_moreswitches(pTHX_ const char *s)
3225 const char option = *s; /* used to remember option in -m/-M code */
3227 PERL_ARGS_ASSERT_MORESWITCHES;
3235 SvREFCNT_dec(PL_rs);
3236 if (s[1] == 'x' && s[2]) {
3237 const char *e = s+=2;
3243 flags = PERL_SCAN_SILENT_ILLDIGIT;
3244 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3245 if (s + numlen < e) {
3246 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3250 PL_rs = newSVpvs("");
3251 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
3252 uvchr_to_utf8(tmps, rschar);
3253 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
3258 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3259 if (rschar & ~((U8)~0))
3260 PL_rs = &PL_sv_undef;
3261 else if (!rschar && numlen >= 2)
3262 PL_rs = newSVpvs("");
3264 char ch = (char)rschar;
3265 PL_rs = newSVpvn(&ch, 1);
3268 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3273 PL_unicode = parse_unicode_opts( (const char **)&s );
3274 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3282 while (*s && !isSPACE(*s)) ++s;
3283 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3295 forbid_setid('d', FALSE);
3298 /* -dt indicates to the debugger that threads will be used */
3299 if (*s == 't' && !isWORDCHAR(s[1])) {
3301 my_setenv("PERL5DB_THREADED", "1");
3304 /* The following permits -d:Mod to accepts arguments following an =
3305 in the fashion that -MSome::Mod does. */
3306 if (*s == ':' || *s == '=') {
3313 sv = newSVpvs("no Devel::");
3315 sv = newSVpvs("use Devel::");
3319 end = s + strlen(s);
3321 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3322 while(isWORDCHAR(*s) || *s==':') ++s;
3324 sv_catpvn(sv, start, end - start);
3326 sv_catpvn(sv, start, s-start);
3327 /* Don't use NUL as q// delimiter here, this string goes in the
3329 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3332 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3336 PL_perldb = PERLDB_ALL;
3343 forbid_setid('D', FALSE);
3345 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3346 #else /* !DEBUGGING */
3347 if (ckWARN_d(WARN_DEBUGGING))
3348 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3349 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3350 for (s++; isWORDCHAR(*s); s++) ;
3353 NOT_REACHED; /* NOTREACHED */
3357 NOT_REACHED; /* NOTREACHED */
3360 Safefree(PL_inplace);
3361 #if defined(__CYGWIN__) /* do backup extension automagically */
3362 if (*(s+1) == '\0') {
3363 PL_inplace = savepvs(".bak");
3366 #endif /* __CYGWIN__ */
3368 const char * const start = ++s;
3369 while (*s && !isSPACE(*s))
3372 PL_inplace = savepvn(start, s - start);
3375 case 'I': /* -I handled both here and in parse_body() */
3376 forbid_setid('I', FALSE);
3378 while (*s && isSPACE(*s))
3383 /* ignore trailing spaces (possibly followed by other switches) */
3385 for (e = p; *e && !isSPACE(*e); e++) ;
3389 } while (*p && *p != '-');
3391 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3397 Perl_croak(aTHX_ "No directory specified for -I");
3403 SvREFCNT_dec(PL_ors_sv);
3409 PL_ors_sv = newSVpvs("\n");
3410 numlen = 3 + (*s == '0');
3411 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3415 if (RsPARA(PL_rs)) {
3416 PL_ors_sv = newSVpvs("\n\n");
3419 PL_ors_sv = newSVsv(PL_rs);
3424 forbid_setid('M', FALSE); /* XXX ? */
3427 forbid_setid('m', FALSE); /* XXX ? */
3432 const char *use = "use ";
3434 /* -M-foo == 'no foo' */
3435 /* Leading space on " no " is deliberate, to make both
3436 possibilities the same length. */
3437 if (*s == '-') { use = " no "; ++s; }
3438 sv = newSVpvn(use,4);
3440 /* We allow -M'Module qw(Foo Bar)' */
3441 while(isWORDCHAR(*s) || *s==':') {
3450 Perl_croak(aTHX_ "Module name required with -%c option",
3453 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3454 "contains single ':'",
3455 (int)(s - start), start, option);
3456 end = s + strlen(s);
3458 sv_catpvn(sv, start, end - start);
3459 if (option == 'm') {
3461 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3462 sv_catpvs( sv, " ()");
3465 sv_catpvn(sv, start, s-start);
3466 /* Use NUL as q''-delimiter. */
3467 sv_catpvs(sv, " split(/,/,q\0");
3469 sv_catpvn(sv, s, end - s);
3470 sv_catpvs(sv, "\0)");
3473 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3476 Perl_croak(aTHX_ "Missing argument to -%c", option);
3487 forbid_setid('s', FALSE);
3488 PL_doswitches = TRUE;
3493 #if defined(SILENT_NO_TAINT_SUPPORT)
3494 /* silently ignore */
3495 #elif defined(NO_TAINT_SUPPORT)
3496 Perl_croak_nocontext("This perl was compiled without taint support. "
3497 "Cowardly refusing to run with -t or -T flags");
3505 PL_do_undump = TRUE;
3515 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3516 PL_dowarn |= G_WARN_ON;
3521 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3522 if (!specialWARN(PL_compiling.cop_warnings))
3523 PerlMemShared_free(PL_compiling.cop_warnings);
3524 PL_compiling.cop_warnings = pWARN_ALL ;
3528 PL_dowarn = G_WARN_ALL_OFF;
3529 if (!specialWARN(PL_compiling.cop_warnings))
3530 PerlMemShared_free(PL_compiling.cop_warnings);
3531 PL_compiling.cop_warnings = pWARN_NONE ;
3538 if (s[0] == '-') /* Additional switches on #! line. */
3543 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3549 #ifdef ALTERNATE_SHEBANG
3550 case 'S': /* OS/2 needs -S on "extproc" line. */
3553 case 'e': case 'f': case 'x': case 'E':
3554 #ifndef ALTERNATE_SHEBANG
3558 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3561 "Unrecognized switch: -%.1s (-h will show valid options)",s
3571 PerlIO * PIO_stdout;
3573 const char * const level_str = "v" PERL_VERSION_STRING;
3574 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
3575 #ifdef PERL_PATCHNUM
3577 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3578 static const char num [] = PERL_PATCHNUM "*";
3580 static const char num [] = PERL_PATCHNUM;
3583 const STRLEN num_len = sizeof(num)-1;
3584 /* A very advanced compiler would fold away the strnEQ
3585 and this whole conditional, but most (all?) won't do it.
3586 SV level could also be replaced by with preprocessor
3589 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3590 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3591 of the interp so it might contain format characters
3593 level = newSVpvn(num, num_len);
3595 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
3599 SV* level = newSVpvn(level_str, level_len);
3600 #endif /* #ifdef PERL_PATCHNUM */
3601 PIO_stdout = PerlIO_stdout();
3602 PerlIO_printf(PIO_stdout,
3603 "\nThis is perl " STRINGIFY(PERL_REVISION)
3604 ", version " STRINGIFY(PERL_VERSION)
3605 ", subversion " STRINGIFY(PERL_SUBVERSION)
3606 " (%" SVf ") built for " ARCHNAME, SVfARG(level)
3608 SvREFCNT_dec_NN(level);
3610 #if defined(LOCAL_PATCH_COUNT)
3611 if (LOCAL_PATCH_COUNT > 0)
3612 PerlIO_printf(PIO_stdout,
3613 "\n(with %d registered patch%s, "
3614 "see perl -V for more detail)",
3616 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3619 PerlIO_printf(PIO_stdout,
3620 "\n\nCopyright 1987-2017, Larry Wall\n");
3622 PerlIO_printf(PIO_stdout,
3623 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3626 PerlIO_printf(PIO_stdout,
3627 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3628 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3631 PerlIO_printf(PIO_stdout,
3632 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3633 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3636 PerlIO_printf(PIO_stdout,
3637 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3640 PerlIO_printf(PIO_stdout,
3641 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3644 PerlIO_printf(PIO_stdout,
3645 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3648 PerlIO_printf(PIO_stdout,
3649 "WINCE port by Rainer Keuchel, 2001-2002\n"
3650 "Built on " __DATE__ " " __TIME__ "\n\n");
3653 #ifdef __SYMBIAN32__
3654 PerlIO_printf(PIO_stdout,
3655 "Symbian port by Nokia, 2004-2005\n");
3657 #ifdef BINARY_BUILD_NOTICE
3658 BINARY_BUILD_NOTICE;
3660 PerlIO_printf(PIO_stdout,
3662 Perl may be copied only under the terms of either the Artistic License or the\n\
3663 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3664 Complete documentation for Perl, including FAQ lists, should be found on\n\
3665 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3666 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3670 /* compliments of Tom Christiansen */
3672 /* unexec() can be found in the Gnu emacs distribution */
3673 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3676 #include <lib$routines.h>
3680 Perl_my_unexec(pTHX)
3683 SV * prog = newSVpv(BIN_EXP, 0);
3684 SV * file = newSVpv(PL_origfilename, 0);
3688 sv_catpvs(prog, "/perl");
3689 sv_catpvs(file, ".perldump");
3691 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3692 /* unexec prints msg to stderr in case of failure */
3693 PerlProc_exit(status);
3695 PERL_UNUSED_CONTEXT;
3697 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3698 # elif defined(WIN32) || defined(__CYGWIN__)
3699 Perl_croak_nocontext("dump is not supported");
3701 ABORT(); /* for use with undump */
3706 /* initialize curinterp */
3711 # define PERLVAR(prefix,var,type)
3712 # define PERLVARA(prefix,var,n,type)
3713 # if defined(PERL_IMPLICIT_CONTEXT)
3714 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3715 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3717 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3718 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3720 # include "intrpvar.h"
3726 # define PERLVAR(prefix,var,type)
3727 # define PERLVARA(prefix,var,n,type)
3728 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3729 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3730 # include "intrpvar.h"
3740 S_init_main_stash(pTHX)
3744 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3745 /* We know that the string "main" will be in the global shared string
3746 table, so it's a small saving to use it rather than allocate another
3748 PL_curstname = newSVpvs_share("main");
3749 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3750 /* If we hadn't caused another reference to "main" to be in the shared
3751 string table above, then it would be worth reordering these two,
3752 because otherwise all we do is delete "main" from it as a consequence
3753 of the SvREFCNT_dec, only to add it again with hv_name_set */
3754 SvREFCNT_dec(GvHV(gv));
3755 hv_name_sets(PL_defstash, "main", 0);
3756 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3758 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3760 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3761 GvMULTI_on(PL_incgv);
3762 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3763 SvREFCNT_inc_simple_void(PL_hintgv);
3764 GvMULTI_on(PL_hintgv);
3765 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3766 SvREFCNT_inc_simple_void(PL_defgv);
3767 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
3768 SvREFCNT_inc_simple_void(PL_errgv);
3769 GvMULTI_on(PL_errgv);
3770 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3771 SvREFCNT_inc_simple_void(PL_replgv);
3772 GvMULTI_on(PL_replgv);
3773 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3774 #ifdef PERL_DONT_CREATE_GVSV
3775 (void)gv_SVadd(PL_errgv);
3777 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3779 SET_CURSTASH(PL_defstash);
3780 CopSTASH_set(&PL_compiling, PL_defstash);
3781 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3782 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3784 /* We must init $/ before switches are processed. */
3785 sv_setpvs(get_sv("/", GV_ADD), "\n");
3789 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3792 PerlIO *rsfp = NULL;
3796 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3799 PL_origfilename = savepvs("-e");
3804 /* if find_script() returns, it returns a malloc()-ed value */
3805 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3807 if (strEQs(scriptname, "/dev/fd/")
3808 && isDIGIT(scriptname[8])
3809 && grok_atoUV(scriptname + 8, &uv, &s)
3810 && uv <= PERL_INT_MAX
3815 * Tell apart "normal" usage of fdscript, e.g.
3816 * with bash on FreeBSD:
3817 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3818 * from usage in suidperl.
3819 * Does any "normal" usage leave garbage after the number???
3820 * Is it a mistake to use a similar /dev/fd/ construct for
3825 * Be supersafe and do some sanity-checks.
3826 * Still, can we be sure we got the right thing?
3829 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3832 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3834 scriptname = savepv(s + 1);
3835 Safefree(PL_origfilename);
3836 PL_origfilename = (char *)scriptname;
3841 CopFILE_free(PL_curcop);
3842 CopFILE_set(PL_curcop, PL_origfilename);
3843 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3844 scriptname = (char *)"";
3845 if (fdscript >= 0) {
3846 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3848 else if (!*scriptname) {
3849 forbid_setid(0, *suidscript);
3853 #ifdef FAKE_BIT_BUCKET
3854 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3855 * is called) and still have the "-e" work. (Believe it or not,
3856 * a /dev/null is required for the "-e" to work because source
3857 * filter magic is used to implement it. ) This is *not* a general
3858 * replacement for a /dev/null. What we do here is create a temp
3859 * file (an empty file), open up that as the script, and then
3860 * immediately close and unlink it. Close enough for jazz. */
3861 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3862 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3863 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3864 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3865 FAKE_BIT_BUCKET_TEMPLATE
3867 const char * const err = "Failed to create a fake bit bucket";
3868 if (strEQ(scriptname, BIT_BUCKET)) {
3869 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3870 int old_umask = umask(0177);
3871 int tmpfd = mkstemp(tmpname);
3874 scriptname = tmpname;
3877 Perl_croak(aTHX_ err);
3880 scriptname = mktemp(tmpname);
3882 Perl_croak(aTHX_ err);
3887 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3888 #ifdef FAKE_BIT_BUCKET
3889 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3890 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3891 && strlen(scriptname) == sizeof(tmpname) - 1) {
3894 scriptname = BIT_BUCKET;
3898 /* PSz 16 Sep 03 Keep neat error message */
3900 Perl_croak(aTHX_ "Can't open " BIT_BUCKET ": %s\n", Strerror(errno));
3902 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3903 CopFILE(PL_curcop), Strerror(errno));
3905 fd = PerlIO_fileno(rsfp);
3906 #if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
3908 /* ensure close-on-exec */
3909 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
3910 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3911 CopFILE(PL_curcop), Strerror(errno));
3917 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3918 && S_ISDIR(tmpstatbuf.st_mode)))
3919 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3927 * I_SYSSTATVFS HAS_FSTATVFS
3929 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3930 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3931 * here so that metaconfig picks them up. */
3934 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3935 /* Don't even need this function. */
3938 S_validate_suid(pTHX_ PerlIO *rsfp)
3940 const Uid_t my_uid = PerlProc_getuid();
3941 const Uid_t my_euid = PerlProc_geteuid();
3942 const Gid_t my_gid = PerlProc_getgid();
3943 const Gid_t my_egid = PerlProc_getegid();
3945 PERL_ARGS_ASSERT_VALIDATE_SUID;
3947 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3949 int fd = PerlIO_fileno(rsfp);
3951 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3952 Perl_croak_nocontext( "Illegal suidscript");
3954 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
3956 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
3959 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3960 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3961 /* not set-id, must be wrapped */
3964 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3967 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3972 PERL_ARGS_ASSERT_FIND_BEGINNING;
3974 /* skip forward in input to the real script? */
3977 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3978 Perl_croak(aTHX_ "No Perl script found in input\n");
3980 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3981 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3982 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3984 while (*s == ' ' || *s == '\t') s++;
3986 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3987 || s2[-1] == '_') s2--;
3988 if (strEQs(s2-4,"perl"))
3989 while ((s = moreswitches(s)))
3998 /* no need to do anything here any more if we don't
4000 #ifndef NO_TAINT_SUPPORT
4001 const Uid_t my_uid = PerlProc_getuid();
4002 const Uid_t my_euid = PerlProc_geteuid();
4003 const Gid_t my_gid = PerlProc_getgid();
4004 const Gid_t my_egid = PerlProc_getegid();
4006 PERL_UNUSED_CONTEXT;
4008 /* Should not happen: */
4009 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
4010 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
4014 * Should go by suidscript, not uid!=euid: why disallow
4015 * system("ls") in scripts run from setuid things?
4016 * Or, is this run before we check arguments and set suidscript?
4017 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
4018 * (We never have suidscript, can we be sure to have fdscript?)
4019 * Or must then go by UID checks? See comments in forbid_setid also.
4023 /* This is used very early in the lifetime of the program,
4024 * before even the options are parsed, so PL_tainting has
4025 * not been initialized properly. */
4027 Perl_doing_taint(int argc, char *argv[], char *envp[])
4029 #ifndef PERL_IMPLICIT_SYS
4030 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
4031 * before we have an interpreter-- and the whole point of this
4032 * function is to be called at such an early stage. If you are on
4033 * a system with PERL_IMPLICIT_SYS but you do have a concept of
4034 * "tainted because running with altered effective ids', you'll
4035 * have to add your own checks somewhere in here. The two most
4036 * known samples of 'implicitness' are Win32 and NetWare, neither
4037 * of which has much of concept of 'uids'. */
4038 Uid_t uid = PerlProc_getuid();
4039 Uid_t euid = PerlProc_geteuid();
4040 Gid_t gid = PerlProc_getgid();
4041 Gid_t egid = PerlProc_getegid();
4048 if (uid && (euid != uid || egid != gid))
4050 #endif /* !PERL_IMPLICIT_SYS */
4051 /* This is a really primitive check; environment gets ignored only
4052 * if -T are the first chars together; otherwise one gets
4053 * "Too late" message. */
4054 if ( argc > 1 && argv[1][0] == '-'
4055 && isALPHA_FOLD_EQ(argv[1][1], 't'))
4060 /* Passing the flag as a single char rather than a string is a slight space
4061 optimisation. The only message that isn't /^-.$/ is
4062 "program input from stdin", which is substituted in place of '\0', which
4063 could never be a command line flag. */
4065 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
4067 char string[3] = "-x";
4068 const char *message = "program input from stdin";
4070 PERL_UNUSED_CONTEXT;
4076 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
4077 if (PerlProc_getuid() != PerlProc_geteuid())
4078 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4079 if (PerlProc_getgid() != PerlProc_getegid())
4080 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4081 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4083 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4087 Perl_init_dbargs(pTHX)
4089 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4094 /* Someone has already created it.
4095 It might have entries, and if we just turn off AvREAL(), they will
4096 "leak" until global destruction. */
4098 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4099 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4101 AvREIFY_only(PL_dbargs);
4105 Perl_init_debugger(pTHX)
4107 HV * const ostash = PL_curstash;
4110 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4112 Perl_init_dbargs(aTHX);
4113 PL_DBgv = MUTABLE_GV(
4114 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4116 PL_DBline = MUTABLE_GV(
4117 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4119 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4120 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4122 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4123 if (!SvIOK(PL_DBsingle))
4124 sv_setiv(PL_DBsingle, 0);
4125 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4126 mg->mg_private = DBVARMG_SINGLE;
4127 SvSETMAGIC(PL_DBsingle);
4129 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4130 if (!SvIOK(PL_DBtrace))
4131 sv_setiv(PL_DBtrace, 0);
4132 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4133 mg->mg_private = DBVARMG_TRACE;
4134 SvSETMAGIC(PL_DBtrace);
4136 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4137 if (!SvIOK(PL_DBsignal))
4138 sv_setiv(PL_DBsignal, 0);
4139 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4140 mg->mg_private = DBVARMG_SIGNAL;
4141 SvSETMAGIC(PL_DBsignal);
4143 SvREFCNT_dec(PL_curstash);
4144 PL_curstash = ostash;
4147 #ifndef STRESS_REALLOC
4148 #define REASONABLE(size) (size)
4149 #define REASONABLE_but_at_least(size,min) (size)
4151 #define REASONABLE(size) (1) /* unreasonable */
4152 #define REASONABLE_but_at_least(size,min) (min)
4156 Perl_init_stacks(pTHX)
4160 /* start with 128-item stack and 8K cxstack */
4161 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4162 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4163 PL_curstackinfo->si_type = PERLSI_MAIN;
4164 PL_curstack = PL_curstackinfo->si_stack;
4165 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4167 PL_stack_base = AvARRAY(PL_curstack);
4168 PL_stack_sp = PL_stack_base;
4169 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4171 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4174 PL_tmps_max = REASONABLE(128);
4176 Newx(PL_markstack,REASONABLE(32),I32);
4177 PL_markstack_ptr = PL_markstack;
4178 PL_markstack_max = PL_markstack + REASONABLE(32);
4182 Newx(PL_scopestack,REASONABLE(32),I32);
4184 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4186 PL_scopestack_ix = 0;
4187 PL_scopestack_max = REASONABLE(32);
4189 size = REASONABLE_but_at_least(128,SS_MAXPUSH);
4190 Newx(PL_savestack, size, ANY);
4191 PL_savestack_ix = 0;
4192 /*PL_savestack_max lies: it always has SS_MAXPUSH more than it claims */
4193 PL_savestack_max = size - SS_MAXPUSH;
4201 while (PL_curstackinfo->si_next)
4202 PL_curstackinfo = PL_curstackinfo->si_next;
4203 while (PL_curstackinfo) {
4204 PERL_SI *p = PL_curstackinfo->si_prev;
4205 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4206 Safefree(PL_curstackinfo->si_cxstack);
4207 Safefree(PL_curstackinfo);
4208 PL_curstackinfo = p;
4210 Safefree(PL_tmps_stack);
4211 Safefree(PL_markstack);
4212 Safefree(PL_scopestack);
4214 Safefree(PL_scopestack_name);
4216 Safefree(PL_savestack);
4220 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4222 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4223 AV *const isa = GvAVn(gv);
4226 PERL_ARGS_ASSERT_POPULATE_ISA;
4228 if(AvFILLp(isa) != -1)
4231 /* NOTE: No support for tied ISA */
4233 va_start(args, len);
4235 const char *const parent = va_arg(args, const char*);
4240 parent_len = va_arg(args, size_t);
4242 /* Arguments are supplied with a trailing :: */
4243 assert(parent_len > 2);
4244 assert(parent[parent_len - 1] == ':');
4245 assert(parent[parent_len - 2] == ':');
4246 av_push(isa, newSVpvn(parent, parent_len - 2));
4247 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4254 S_init_predump_symbols(pTHX)
4259 sv_setpvs(get_sv("\"", GV_ADD), " ");
4260 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4263 /* Historically, PVIOs were blessed into IO::Handle, unless
4264 FileHandle was loaded, in which case they were blessed into
4265 that. Action at a distance.
4266 However, if we simply bless into IO::Handle, we break code
4267 that assumes that PVIOs will have (among others) a seek
4268 method. IO::File inherits from IO::Handle and IO::Seekable,
4269 and provides the needed methods. But if we simply bless into
4270 it, then we break code that assumed that by loading
4271 IO::Handle, *it* would work.
4272 So a compromise is to set up the correct @IO::File::ISA,
4273 so that code that does C<use IO::Handle>; will still work.
4276 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4277 STR_WITH_LEN("IO::Handle::"),
4278 STR_WITH_LEN("IO::Seekable::"),
4279 STR_WITH_LEN("Exporter::"),
4282 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4283 GvMULTI_on(PL_stdingv);
4284 io = GvIOp(PL_stdingv);
4285 IoTYPE(io) = IoTYPE_RDONLY;
4286 IoIFP(io) = PerlIO_stdin();
4287 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4289 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4291 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4294 IoTYPE(io) = IoTYPE_WRONLY;
4295 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4297 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4299 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4301 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4302 GvMULTI_on(PL_stderrgv);
4303 io = GvIOp(PL_stderrgv);
4304 IoTYPE(io) = IoTYPE_WRONLY;
4305 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4306 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4308 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4310 PL_statname = newSVpvs(""); /* last filename we did stat on */
4314 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4316 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4318 argc--,argv++; /* skip name of script */
4319 if (PL_doswitches) {
4320 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4324 if (argv[0][1] == '-' && !argv[0][2]) {
4328 if ((s = strchr(argv[0], '='))) {
4329 const char *const start_name = argv[0] + 1;
4330 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4331 TRUE, SVt_PV)), s + 1);
4334 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4337 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4338 SvREFCNT_inc_simple_void_NN(PL_argvgv);
4339 GvMULTI_on(PL_argvgv);
4340 av_clear(GvAVn(PL_argvgv));
4341 for (; argc > 0; argc--,argv++) {
4342 SV * const sv = newSVpv(argv[0],0);
4343 av_push(GvAV(PL_argvgv),sv);
4344 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4345 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4348 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4349 (void)sv_utf8_decode(sv);
4353 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4354 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4355 "-i used with no filenames on the command line, "
4356 "reading from STDIN");
4360 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4367 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4369 PL_toptarget = newSV_type(SVt_PVIV);
4370 SvPVCLEAR(PL_toptarget);
4371 PL_bodytarget = newSV_type(SVt_PVIV);
4372 SvPVCLEAR(PL_bodytarget);
4373 PL_formtarget = PL_bodytarget;
4377 init_argv_symbols(argc,argv);
4379 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4380 sv_setpv(GvSV(tmpgv),PL_origfilename);
4382 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4384 bool env_is_not_environ;
4385 SvREFCNT_inc_simple_void_NN(PL_envgv);
4386 GvMULTI_on(PL_envgv);
4387 hv = GvHVn(PL_envgv);
4388 hv_magic(hv, NULL, PERL_MAGIC_env);
4390 #ifdef USE_ENVIRON_ARRAY
4391 /* Note that if the supplied env parameter is actually a copy
4392 of the global environ then it may now point to free'd memory
4393 if the environment has been modified since. To avoid this
4394 problem we treat env==NULL as meaning 'use the default'
4398 env_is_not_environ = env != environ;
4399 if (env_is_not_environ
4400 # ifdef USE_ITHREADS
4401 && PL_curinterp == aTHX
4413 for (; *env; env++) {
4416 if (!(s = strchr(old_var,'=')) || s == old_var)
4420 #if defined(MSDOS) && !defined(DJGPP)
4422 (void)strupr(old_var);
4425 if (hv_exists(hv, old_var, nlen)) {
4426 const char *name = savepvn(old_var, nlen);
4428 /* make sure we use the same value as getenv(), otherwise code that
4429 uses getenv() (like setlocale()) might see a different value to %ENV
4431 sv = newSVpv(PerlEnv_getenv(name), 0);
4433 /* keep a count of the dups of this name so we can de-dup environ later */
4434 if (hv_exists(dups, name, nlen))
4435 ++SvIVX(*hv_fetch(dups, name, nlen, 0));
4437 (void)hv_store(dups, name, nlen, newSViv(1), 0);
4442 sv = newSVpv(s+1, 0);
4444 (void)hv_store(hv, old_var, nlen, sv, 0);
4445 if (env_is_not_environ)
4449 /* environ has some duplicate definitions, remove them */
4452 while ((entry = hv_iternext_flags(dups, 0))) {
4454 const char *name = HePV(entry, nlen);
4455 IV count = SvIV(HeVAL(entry));
4457 SV **valp = hv_fetch(hv, name, nlen, 0);
4461 /* try to remove any duplicate names, depending on the
4462 * implementation used in my_setenv() the iteration might
4463 * not be necessary, but let's be safe.
4465 for (i = 0; i < count; ++i)
4468 /* and set it back to the value we set $ENV{name} to */
4469 my_setenv(name, SvPV_nolen(*valp));
4472 SvREFCNT_dec_NN(dups);
4474 #endif /* USE_ENVIRON_ARRAY */
4475 #endif /* !PERL_MICRO */
4479 /* touch @F array to prevent spurious warnings 20020415 MJD */
4481 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4486 S_init_perllib(pTHX)
4489 const char *perl5lib = NULL;
4492 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4496 if (!TAINTING_get) {
4498 perl5lib = PerlEnv_getenv("PERL5LIB");
4500 * It isn't possible to delete an environment variable with
4501 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4502 * case we treat PERL5LIB as undefined if it has a zero-length value.
4504 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4505 if (perl5lib && *perl5lib != '\0')
4509 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4511 s = PerlEnv_getenv("PERLLIB");
4513 incpush_use_sep(s, 0, 0);
4516 /* Treat PERL5?LIB as a possible search list logical name -- the
4517 * "natural" VMS idiom for a Unix path string. We allow each
4518 * element to be a set of |-separated directories for compatibility.
4522 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4524 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4525 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4527 while (vmstrnenv("PERLLIB",buf,idx++,NULL,0))
4528 incpush_use_sep(buf, 0, 0);
4533 #ifndef PERL_IS_MINIPERL
4534 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4535 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4537 /* Use the ~-expanded versions of APPLLIB (undocumented),
4538 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4541 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4542 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4546 /* sitearch is always relative to sitelib on Windows for
4547 * DLL-based path intuition to work correctly */
4548 # if !defined(WIN32)
4549 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4550 INCPUSH_CAN_RELOCATE);
4556 /* this picks up sitearch as well */
4557 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
4559 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4561 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4565 #ifdef PERL_VENDORARCH_EXP
4566 /* vendorarch is always relative to vendorlib on Windows for
4567 * DLL-based path intuition to work correctly */
4568 # if !defined(WIN32)
4569 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4570 INCPUSH_CAN_RELOCATE);
4574 #ifdef PERL_VENDORLIB_EXP
4576 /* this picks up vendorarch as well */
4577 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
4579 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4581 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4582 INCPUSH_CAN_RELOCATE);
4587 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4591 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4595 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
4597 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4600 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4602 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4606 #ifdef PERL_OTHERLIBDIRS
4607 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4608 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4609 |INCPUSH_CAN_RELOCATE);
4612 if (!TAINTING_get) {
4615 * It isn't possible to delete an environment variable with
4616 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4617 * case we treat PERL5LIB as undefined if it has a zero-length value.
4619 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4620 if (perl5lib && *perl5lib != '\0')
4624 incpush_use_sep(perl5lib, 0,
4625 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4627 /* Treat PERL5?LIB as a possible search list logical name -- the
4628 * "natural" VMS idiom for a Unix path string. We allow each
4629 * element to be a set of |-separated directories for compatibility.
4633 if (vmstrnenv("PERL5LIB",buf,0,NULL,0))
4635 incpush_use_sep(buf, 0,
4636 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4637 } while (vmstrnenv("PERL5LIB",buf,++idx,NULL,0));
4641 /* Use the ~-expanded versions of APPLLIB (undocumented),
4642 SITELIB and VENDORLIB for older versions
4645 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4646 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4649 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4650 /* Search for version-specific dirs below here */
4651 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4652 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4656 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4657 /* Search for version-specific dirs below here */
4658 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4659 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4662 #ifdef PERL_OTHERLIBDIRS
4663 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4664 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4665 |INCPUSH_CAN_RELOCATE);
4667 #endif /* !PERL_IS_MINIPERL */
4669 if (!TAINTING_get) {
4670 #if !defined(PERL_IS_MINIPERL) && defined(DEFAULT_INC_EXCLUDES_DOT)
4671 const char * const unsafe = PerlEnv_getenv("PERL_USE_UNSAFE_INC");
4672 if (unsafe && strEQ(unsafe, "1"))
4674 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4678 #if defined(DOSISH) || defined(__SYMBIAN32__)
4679 # define PERLLIB_SEP ';'
4682 # define PERLLIB_SEP PL_perllib_sep
4684 # define PERLLIB_SEP ':'
4687 #ifndef PERLLIB_MANGLE
4688 # define PERLLIB_MANGLE(s,n) (s)
4691 #ifndef PERL_IS_MINIPERL
4692 /* Push a directory onto @INC if it exists.
4693 Generate a new SV if we do this, to save needing to copy the SV we push
4696 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4700 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4702 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4703 S_ISDIR(tmpstatbuf.st_mode)) {
4705 dir = newSVsv(stem);
4707 /* Truncate dir back to stem. */
4708 SvCUR_set(dir, SvCUR(stem));
4715 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4717 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4720 PERL_ARGS_ASSERT_MAYBERELOCATE;
4723 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4724 defined to so something (in os2/os2.c), but the code has been
4725 this way, ignoring any possible changed of length, since
4726 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4728 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4734 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4736 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
4737 sv_usepvn(libdir,unix,len);
4740 PerlIO_printf(Perl_error_log,
4741 "Failed to unixify @INC element \"%s\"\n",
4742 SvPV_nolen_const(libdir));
4746 /* Do the if() outside the #ifdef to avoid warnings about an unused
4749 #ifdef PERL_RELOCATABLE_INC
4751 * Relocatable include entries are marked with a leading .../
4754 * 0: Remove that leading ".../"
4755 * 1: Remove trailing executable name (anything after the last '/')
4756 * from the perl path to give a perl prefix
4758 * While the @INC element starts "../" and the prefix ends with a real
4759 * directory (ie not . or ..) chop that real directory off the prefix
4760 * and the leading "../" from the @INC element. ie a logical "../"
4762 * Finally concatenate the prefix and the remainder of the @INC element
4763 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4764 * generates /usr/local/lib/perl5
4766 const char *libpath = SvPVX(libdir);
4767 STRLEN libpath_len = SvCUR(libdir);
4768 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4770 SV * const caret_X = get_sv("\030", 0);
4771 /* Going to use the SV just as a scratch buffer holding a C
4777 /* $^X is *the* source of taint if tainting is on, hence
4778 SvPOK() won't be true. */
4780 assert(SvPOKp(caret_X));
4781 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4783 /* Firstly take off the leading .../
4784 If all else fail we'll do the paths relative to the current
4786 sv_chop(libdir, libpath + 4);
4787 /* Don't use SvPV as we're intentionally bypassing taining,
4788 mortal copies that the mg_get of tainting creates, and
4789 corruption that seems to come via the save stack.
4790 I guess that the save stack isn't correctly set up yet. */
4791 libpath = SvPVX(libdir);
4792 libpath_len = SvCUR(libdir);
4794 /* This would work more efficiently with memrchr, but as it's
4795 only a GNU extension we'd need to probe for it and
4796 implement our own. Not hard, but maybe not worth it? */
4798 prefix = SvPVX(prefix_sv);
4799 lastslash = strrchr(prefix, '/');
4801 /* First time in with the *lastslash = '\0' we just wipe off
4802 the trailing /perl from (say) /usr/foo/bin/perl
4806 while ((*lastslash = '\0'), /* Do that, come what may. */
4807 (libpath_len >= 3 && _memEQs(libpath, "../")
4808 && (lastslash = strrchr(prefix, '/')))) {
4809 if (lastslash[1] == '\0'
4810 || (lastslash[1] == '.'
4811 && (lastslash[2] == '/' /* ends "/." */
4812 || (lastslash[2] == '/'
4813 && lastslash[3] == '/' /* or "/.." */
4815 /* Prefix ends "/" or "/." or "/..", any of which
4816 are fishy, so don't do any more logical cleanup.
4820 /* Remove leading "../" from path */
4823 /* Next iteration round the loop removes the last
4824 directory name from prefix by writing a '\0' in
4825 the while clause. */
4827 /* prefix has been terminated with a '\0' to the correct
4828 length. libpath points somewhere into the libdir SV.
4829 We need to join the 2 with '/' and drop the result into
4831 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4832 SvREFCNT_dec(libdir);
4833 /* And this is the new libdir. */
4836 (PerlProc_getuid() != PerlProc_geteuid() ||
4837 PerlProc_getgid() != PerlProc_getegid())) {
4838 /* Need to taint relocated paths if running set ID */
4839 SvTAINTED_on(libdir);
4842 SvREFCNT_dec(prefix_sv);
4850 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4852 #ifndef PERL_IS_MINIPERL
4853 const U8 using_sub_dirs
4854 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4855 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4856 const U8 add_versioned_sub_dirs
4857 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4858 const U8 add_archonly_sub_dirs
4859 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4860 #ifdef PERL_INC_VERSION_LIST
4861 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4864 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4865 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4866 AV *const inc = GvAVn(PL_incgv);
4868 PERL_ARGS_ASSERT_INCPUSH;
4871 /* Could remove this vestigial extra block, if we don't mind a lot of
4872 re-indenting diff noise. */
4874 SV *const libdir = mayberelocate(dir, len, flags);
4875 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4876 arranged to unshift #! line -I onto the front of @INC. However,
4877 -I can add version and architecture specific libraries, and they
4878 need to go first. The old code assumed that it was always
4879 pushing. Hence to make it work, need to push the architecture
4880 (etc) libraries onto a temporary array, then "unshift" that onto
4881 the front of @INC. */
4882 #ifndef PERL_IS_MINIPERL
4883 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4886 * BEFORE pushing libdir onto @INC we may first push version- and
4887 * archname-specific sub-directories.
4889 if (using_sub_dirs) {
4890 SV *subdir = newSVsv(libdir);
4891 #ifdef PERL_INC_VERSION_LIST
4892 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4893 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4894 const char * const *incver;
4897 if (add_versioned_sub_dirs) {
4898 /* .../version/archname if -d .../version/archname */
4899 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4900 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4902 /* .../version if -d .../version */
4903 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4904 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4907 #ifdef PERL_INC_VERSION_LIST
4909 for (incver = incverlist; *incver; incver++) {
4910 /* .../xxx if -d .../xxx */
4911 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4912 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4917 if (add_archonly_sub_dirs) {
4918 /* .../archname if -d .../archname */
4919 sv_catpvs(subdir, "/" ARCHNAME);
4920 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4924 assert (SvREFCNT(subdir) == 1);
4925 SvREFCNT_dec(subdir);
4927 #endif /* !PERL_IS_MINIPERL */
4928 /* finally add this lib directory at the end of @INC */
4930 #ifdef PERL_IS_MINIPERL
4931 const Size_t extra = 0;
4933 Size_t extra = av_tindex(av) + 1;
4935 av_unshift(inc, extra + push_basedir);
4937 av_store(inc, extra, libdir);
4938 #ifndef PERL_IS_MINIPERL
4940 /* av owns a reference, av_store() expects to be donated a
4941 reference, and av expects to be sane when it's cleared.
4942 If I wanted to be naughty and wrong, I could peek inside the
4943 implementation of av_clear(), realise that it uses
4944 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4945 and so directly steal from it (with a memcpy() to inc, and
4946 then memset() to NULL them out. But people copy code from the
4947 core expecting it to be best practise, so let's use the API.
4948 Although studious readers will note that I'm not checking any
4950 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4955 else if (push_basedir) {
4956 av_push(inc, libdir);
4959 if (!push_basedir) {
4960 assert (SvREFCNT(libdir) == 1);
4961 SvREFCNT_dec(libdir);
4967 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4971 /* This logic has been broken out from S_incpush(). It may be possible to
4974 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4976 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4977 * argument to incpush_use_sep. This allows creation of relocatable
4978 * Perl distributions that patch the binary at install time. Those
4979 * distributions will have to provide their own relocation tools; this
4980 * is not a feature otherwise supported by core Perl.
4982 #ifndef PERL_RELOCATABLE_INCPUSH
4989 /* Break at all separators */
4990 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4992 /* skip any consecutive separators */
4994 /* Uncomment the next line for PATH semantics */
4995 /* But you'll need to write tests */
4996 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4998 incpush(p, (STRLEN)(s - p), flags);
5003 incpush(p, (STRLEN)(end - p), flags);
5008 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
5011 VOL const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
5017 PERL_ARGS_ASSERT_CALL_LIST;
5019 while (av_tindex(paramList) >= 0) {
5020 cv = MUTABLE_CV(av_shift(paramList));
5022 if (paramList == PL_beginav) {
5023 /* save PL_beginav for compiler */
5024 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
5026 else if (paramList == PL_checkav) {
5027 /* save PL_checkav for compiler */
5028 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
5030 else if (paramList == PL_unitcheckav) {
5031 /* save PL_unitcheckav for compiler */
5032 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
5042 (void)SvPV_const(atsv, len);
5044 PL_curcop = &PL_compiling;
5045 CopLINE_set(PL_curcop, oldline);
5046 if (paramList == PL_beginav)
5047 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
5049 Perl_sv_catpvf(aTHX_ atsv,
5050 "%s failed--call queue aborted",
5051 paramList == PL_checkav ? "CHECK"
5052 : paramList == PL_initav ? "INIT"
5053 : paramList == PL_unitcheckav ? "UNITCHECK"
5055 while (PL_scopestack_ix > oldscope)
5058 Perl_croak(aTHX_ "%" SVf, SVfARG(atsv));
5065 /* my_exit() was called */
5066 while (PL_scopestack_ix > oldscope)
5069 SET_CURSTASH(PL_defstash);
5070 PL_curcop = &PL_compiling;
5071 CopLINE_set(PL_curcop, oldline);
5074 NOT_REACHED; /* NOTREACHED */
5077 PL_curcop = &PL_compiling;
5078 CopLINE_set(PL_curcop, oldline);
5081 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
5090 Perl_my_exit(pTHX_ U32 status)
5092 if (PL_exit_flags & PERL_EXIT_ABORT) {
5095 if (PL_exit_flags & PERL_EXIT_WARN) {
5096 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5097 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
5098 PL_exit_flags &= ~PERL_EXIT_ABORT;
5108 STATUS_EXIT_SET(status);
5115 Perl_my_failure_exit(pTHX)
5118 /* We have been called to fall on our sword. The desired exit code
5119 * should be already set in STATUS_UNIX, but could be shifted over
5120 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
5123 * If an error code has not been set, then force the issue.
5125 if (MY_POSIX_EXIT) {
5127 /* According to the die_exit.t tests, if errno is non-zero */
5128 /* It should be used for the error status. */
5130 if (errno == EVMSERR) {
5131 STATUS_NATIVE = vaxc$errno;
5134 /* According to die_exit.t tests, if the child_exit code is */
5135 /* also zero, then we need to exit with a code of 255 */
5136 if ((errno != 0) && (errno < 256))
5137 STATUS_UNIX_EXIT_SET(errno);
5138 else if (STATUS_UNIX < 255) {
5139 STATUS_UNIX_EXIT_SET(255);
5144 /* The exit code could have been set by $? or vmsish which
5145 * means that it may not have fatal set. So convert
5146 * success/warning codes to fatal with out changing
5147 * the POSIX status code. The severity makes VMS native
5148 * status handling work, while UNIX mode programs use the
5149 * the POSIX exit codes.
5151 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5152 STATUS_NATIVE &= STS$M_COND_ID;
5153 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5157 /* Traditionally Perl on VMS always expects a Fatal Error. */
5158 if (vaxc$errno & 1) {
5160 /* So force success status to failure */
5161 if (STATUS_NATIVE & 1)
5166 STATUS_UNIX = EINTR; /* In case something cares */
5171 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5173 /* Encode the severity code */
5174 severity = STATUS_NATIVE & STS$M_SEVERITY;
5175 STATUS_UNIX = (severity ? severity : 1) << 8;
5177 /* Perl expects this to be a fatal error */
5178 if (severity != STS$K_SEVERE)
5187 STATUS_UNIX_SET(errno);
5189 exitstatus = STATUS_UNIX >> 8;
5190 if (exitstatus & 255)
5191 STATUS_UNIX_SET(exitstatus);
5193 STATUS_UNIX_SET(255);
5196 if (PL_exit_flags & PERL_EXIT_ABORT) {
5199 if (PL_exit_flags & PERL_EXIT_WARN) {
5200 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5201 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
5202 PL_exit_flags &= ~PERL_EXIT_ABORT;
5208 S_my_exit_jump(pTHX)
5211 SvREFCNT_dec(PL_e_script);
5215 POPSTACK_TO(PL_mainstack);
5216 if (cxstack_ix >= 0) {
5218 cx_popblock(cxstack);
5226 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5228 const char * const p = SvPVX_const(PL_e_script);
5229 const char *nl = strchr(p, '\n');
5231 PERL_UNUSED_ARG(idx);
5232 PERL_UNUSED_ARG(maxlen);
5234 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5236 filter_del(read_e_script);
5239 sv_catpvn(buf_sv, p, nl-p);
5240 sv_chop(PL_e_script, nl);
5244 /* removes boilerplate code at the end of each boot_Module xsub */
5246 Perl_xs_boot_epilog(pTHX_ const I32 ax)
5249 call_list(PL_scopestack_ix, PL_unitcheckav);
5254 * ex: set ts=8 sts=4 sw=4 et: