4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
6 * by Larry Wall and others
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of EƤrendil
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
21 /* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
24 * function of the interpreter; that can be found in perlmain.c
27 #if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
28 # define USE_SITECUSTOMIZE
32 #define PERL_IN_PERL_C
34 #include "patchlevel.h" /* for local_patches */
41 #ifdef USE_KERN_PROC_PATHNAME
42 # include <sys/sysctl.h>
45 #ifdef USE_NSGETEXECUTABLEPATH
46 # include <mach-o/dyld.h>
49 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
56 char control[CMSG_SPACE(sizeof(int))];
69 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
70 char *getenv (char *); /* Usually in <stdlib.h> */
73 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
75 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
76 # define validate_suid(rsfp) NOOP
78 # define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
81 #define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
87 #define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
92 S_init_tls_and_interp(PerlInterpreter *my_perl)
96 PERL_SET_INTERP(my_perl);
97 #if defined(USE_ITHREADS)
100 PERL_SET_THX(my_perl);
104 MUTEX_INIT(&PL_dollarzero_mutex);
105 MUTEX_INIT(&PL_my_ctx_mutex);
108 #if defined(USE_ITHREADS)
111 /* This always happens for non-ithreads */
114 PERL_SET_THX(my_perl);
119 /* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
122 Perl_sys_init(int* argc, char*** argv)
126 PERL_ARGS_ASSERT_SYS_INIT;
128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
134 Perl_sys_init3(int* argc, char*** argv, char*** env)
138 PERL_ARGS_ASSERT_SYS_INIT3;
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
156 #ifdef PERL_IMPLICIT_SYS
158 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
164 PerlInterpreter *my_perl;
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
168 /* Newx() needs interpreter, so call malloc() instead */
169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
170 S_init_tls_and_interp(my_perl);
171 Zero(my_perl, 1, PerlInterpreter);
181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
188 =head1 Embedding Functions
190 =for apidoc perl_alloc
192 Allocates a new Perl interpreter. See L<perlembed>.
200 PerlInterpreter *my_perl;
202 /* Newx() needs interpreter, so call malloc() instead */
203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
205 S_init_tls_and_interp(my_perl);
206 #ifndef PERL_TRACK_MEMPOOL
207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 #endif /* PERL_IMPLICIT_SYS */
217 =for apidoc perl_construct
219 Initializes a new Perl interpreter. See L<perlembed>.
225 perl_construct(pTHXx)
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
233 PL_perl_destruct_level = 1;
235 PERL_UNUSED_ARG(my_perl);
236 if (PL_perl_destruct_level > 0)
239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
241 #ifdef PERL_TRACE_OPS
242 Zero(PL_op_exec_cnt, OP_max+2, UV);
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
251 #ifdef PERL_USES_PL_PIDSTATUS
252 PL_pidstatus = newHV();
255 PL_rs = newSVpvs("\n");
265 SET_NUMERIC_STANDARD();
267 #if defined(LOCAL_PATCH_COUNT)
268 PL_localpatches = local_patches; /* For possible -v */
271 #ifdef HAVE_INTERP_INTERN
275 PerlIO_init(aTHX); /* Hook to IO system */
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
279 PL_errors = newSVpvs("");
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
287 PL_regex_pad = AvARRAY(PL_regex_padav);
288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
290 #ifdef USE_REENTRANT_API
291 Perl_reentrant_init(aTHX);
293 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
294 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
295 * This MUST be done before any hash stores or fetches take place.
296 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
297 * yourself, it is your responsibility to provide a good random seed!
298 * You can also define PERL_HASH_SEED in compile time, see hv.h.
300 * XXX: fix this comment */
301 if (PL_hash_seed_set == FALSE) {
302 Perl_get_hash_seed(aTHX_ PL_hash_seed);
303 PL_hash_seed_set= TRUE;
305 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
307 /* Note that strtab is a rather special HV. Assumptions are made
308 about not iterating on it, and not adding tie magic to it.
309 It is properly deallocated in perl_destruct() */
312 HvSHAREKEYS_off(PL_strtab); /* mandatory */
313 hv_ksplit(PL_strtab, 512);
315 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
317 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
318 _dyld_lookup_and_bind
319 ("__environ", (unsigned long *) &environ_pointer, NULL);
323 # ifdef USE_ENVIRON_ARRAY
324 PL_origenviron = environ;
328 /* Use sysconf(_SC_CLK_TCK) if available, if not
329 * available or if the sysconf() fails, use the HZ.
330 * The HZ if not originally defined has been by now
331 * been defined as CLK_TCK, if available. */
332 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
333 PL_clocktick = sysconf(_SC_CLK_TCK);
334 if (PL_clocktick <= 0)
338 PL_stashcache = newHV();
340 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
341 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
344 if (!PL_mmap_page_size) {
345 #if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
347 SETERRNO(0, SS_NORMAL);
349 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
351 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
353 if ((long) PL_mmap_page_size < 0) {
355 SV * const error = ERRSV;
356 SvUPGRADE(error, SVt_PV);
357 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
360 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
364 # ifdef HAS_GETPAGESIZE
365 PL_mmap_page_size = getpagesize();
367 # if defined(I_SYS_PARAM) && defined(PAGESIZE)
368 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
372 if (PL_mmap_page_size <= 0)
373 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
374 (IV) PL_mmap_page_size);
376 #endif /* HAS_MMAP */
378 #if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
379 PL_timesbase.tms_utime = 0;
380 PL_timesbase.tms_stime = 0;
381 PL_timesbase.tms_cutime = 0;
382 PL_timesbase.tms_cstime = 0;
385 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
387 PL_registered_mros = newHV();
388 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
389 HvMAX(PL_registered_mros) = 0;
395 =for apidoc nothreadhook
397 Stub that provides thread hook for perl_destruct when there are
404 Perl_nothreadhook(pTHX)
410 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
412 Perl_dump_sv_child(pTHX_ SV *sv)
415 const int sock = PL_dumper_fd;
416 const int debug_fd = PerlIO_fileno(Perl_debug_log);
417 union control_un control;
420 struct cmsghdr *cmptr;
422 unsigned char buffer[256];
424 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
426 if(sock == -1 || debug_fd == -1)
429 PerlIO_flush(Perl_debug_log);
431 /* All these shenanigans are to pass a file descriptor over to our child for
432 it to dump out to. We can't let it hold open the file descriptor when it
433 forks, as the file descriptor it will dump to can turn out to be one end
434 of pipe that some other process will wait on for EOF. (So as it would
435 be open, the wait would be forever.) */
437 msg.msg_control = control.control;
438 msg.msg_controllen = sizeof(control.control);
439 /* We're a connected socket so we don't need a destination */
445 cmptr = CMSG_FIRSTHDR(&msg);
446 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
447 cmptr->cmsg_level = SOL_SOCKET;
448 cmptr->cmsg_type = SCM_RIGHTS;
449 *((int *)CMSG_DATA(cmptr)) = 1;
451 vec[0].iov_base = (void*)&sv;
452 vec[0].iov_len = sizeof(sv);
453 got = sendmsg(sock, &msg, 0);
456 perror("Debug leaking scalars parent sendmsg failed");
459 if(got < sizeof(sv)) {
460 perror("Debug leaking scalars parent short sendmsg");
464 /* Return protocol is
466 unsigned char: length of location string (0 for empty)
467 unsigned char*: string (not terminated)
469 vec[0].iov_base = (void*)&returned_errno;
470 vec[0].iov_len = sizeof(returned_errno);
471 vec[1].iov_base = buffer;
474 got = readv(sock, vec, 2);
477 perror("Debug leaking scalars parent read failed");
478 PerlIO_flush(PerlIO_stderr());
481 if(got < sizeof(returned_errno) + 1) {
482 perror("Debug leaking scalars parent short read");
483 PerlIO_flush(PerlIO_stderr());
488 got = read(sock, buffer + 1, *buffer);
490 perror("Debug leaking scalars parent read 2 failed");
491 PerlIO_flush(PerlIO_stderr());
496 perror("Debug leaking scalars parent short read 2");
497 PerlIO_flush(PerlIO_stderr());
502 if (returned_errno || *buffer) {
503 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
504 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
505 returned_errno, Strerror(returned_errno));
511 =for apidoc perl_destruct
513 Shuts down a Perl interpreter. See L<perlembed>.
522 VOL signed char destruct_level; /* see possible values in intrpvar.h */
524 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
529 PERL_ARGS_ASSERT_PERL_DESTRUCT;
531 PERL_UNUSED_ARG(my_perl);
534 assert(PL_scopestack_ix == 1);
536 /* wait for all pseudo-forked children to finish */
537 PERL_WAIT_FOR_CHILDREN;
539 destruct_level = PL_perl_destruct_level;
540 #if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
542 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
544 const int i = atoi(s);
546 if (destruct_level < i) destruct_level = i;
548 #ifdef PERL_TRACK_MEMPOOL
549 /* RT #114496, for perl_free */
550 PL_perl_destruct_level = i;
556 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
562 if (PL_endav && !PL_minus_c) {
563 PERL_SET_PHASE(PERL_PHASE_END);
564 call_list(PL_scopestack_ix, PL_endav);
570 assert(PL_scopestack_ix == 0);
572 /* Need to flush since END blocks can produce output */
575 #ifdef PERL_TRACE_OPS
576 /* If we traced all Perl OP usage, report and clean up */
577 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
578 for (i = 0; i <= OP_max; ++i) {
579 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
580 PL_op_exec_cnt[i] = 0;
582 /* Utility slot for easily doing little tracing experiments in the runloop: */
583 if (PL_op_exec_cnt[OP_max+1] != 0)
584 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
585 PerlIO_printf(Perl_debug_log, "\n");
589 if (PL_threadhook(aTHX)) {
590 /* Threads hook has vetoed further cleanup */
591 PL_veto_cleanup = TRUE;
595 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
596 if (destruct_level != 0) {
597 /* Fork here to create a child. Our child's job is to preserve the
598 state of scalars prior to destruction, so that we can instruct it
599 to dump any scalars that we later find have leaked.
600 There's no subtlety in this code - it assumes POSIX, and it doesn't
604 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
605 perror("Debug leaking scalars socketpair failed");
611 perror("Debug leaking scalars fork failed");
615 /* We are the child */
616 const int sock = fd[1];
617 const int debug_fd = PerlIO_fileno(Perl_debug_log);
620 /* Our success message is an integer 0, and a char 0 */
621 static const char success[sizeof(int) + 1] = {0};
625 /* We need to close all other file descriptors otherwise we end up
626 with interesting hangs, where the parent closes its end of a
627 pipe, and sits waiting for (another) child to terminate. Only
628 that child never terminates, because it never gets EOF, because
629 we also have the far end of the pipe open. We even need to
630 close the debugging fd, because sometimes it happens to be one
631 end of a pipe, and a process is waiting on the other end for
632 EOF. Normally it would be closed at some point earlier in
633 destruction, but if we happen to cause the pipe to remain open,
634 EOF never occurs, and we get an infinite hang. Hence all the
635 games to pass in a file descriptor if it's actually needed. */
637 f = sysconf(_SC_OPEN_MAX);
639 where = "sysconf failed";
650 union control_un control;
653 struct cmsghdr *cmptr;
657 msg.msg_control = control.control;
658 msg.msg_controllen = sizeof(control.control);
659 /* We're a connected socket so we don't need a source */
663 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
665 vec[0].iov_base = (void*)⌖
666 vec[0].iov_len = sizeof(target);
668 got = recvmsg(sock, &msg, 0);
673 where = "recv failed";
676 if(got < sizeof(target)) {
677 where = "short recv";
681 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
685 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
686 where = "wrong cmsg_len";
689 if(cmptr->cmsg_level != SOL_SOCKET) {
690 where = "wrong cmsg_level";
693 if(cmptr->cmsg_type != SCM_RIGHTS) {
694 where = "wrong cmsg_type";
698 got_fd = *(int*)CMSG_DATA(cmptr);
699 /* For our last little bit of trickery, put the file descriptor
700 back into Perl_debug_log, as if we never actually closed it
702 if(got_fd != debug_fd) {
703 if (dup2(got_fd, debug_fd) == -1) {
710 PerlIO_flush(Perl_debug_log);
712 got = write(sock, &success, sizeof(success));
715 where = "write failed";
718 if(got < sizeof(success)) {
719 where = "short write";
726 int send_errno = errno;
727 unsigned char length = (unsigned char) strlen(where);
728 struct iovec failure[3] = {
729 {(void*)&send_errno, sizeof(send_errno)},
731 {(void*)where, length}
733 int got = writev(sock, failure, 3);
734 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
735 in the parent if we try to read from the socketpair after the
736 child has exited, even if there was data to read.
737 So sleep a bit to give the parent a fighting chance of
740 _exit((got == -1) ? errno : 0);
744 PL_dumper_fd = fd[0];
749 /* We must account for everything. */
751 /* Destroy the main CV and syntax tree */
752 /* Set PL_curcop now, because destroying ops can cause new SVs
753 to be generated in Perl_pad_swipe, and when running with
754 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
755 op from which the filename structure member is copied. */
756 PL_curcop = &PL_compiling;
758 /* ensure comppad/curpad to refer to main's pad */
759 if (CvPADLIST(PL_main_cv)) {
760 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
761 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
763 op_free(PL_main_root);
766 PL_main_start = NULL;
767 /* note that PL_main_cv isn't usually actually freed at this point,
768 * due to the CvOUTSIDE refs from subs compiled within it. It will
769 * get freed once all the subs are freed in sv_clean_all(), for
770 * destruct_level > 0 */
771 SvREFCNT_dec(PL_main_cv);
773 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
775 /* Tell PerlIO we are about to tear things apart in case
776 we have layers which are using resources that should
780 PerlIO_destruct(aTHX);
783 * Try to destruct global references. We do this first so that the
784 * destructors and destructees still exist. Some sv's might remain.
785 * Non-referenced objects are on their own.
789 /* unhook hooks which will soon be, or use, destroyed data */
790 SvREFCNT_dec(PL_warnhook);
792 SvREFCNT_dec(PL_diehook);
795 /* call exit list functions */
796 while (PL_exitlistlen-- > 0)
797 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
799 Safefree(PL_exitlist);
804 SvREFCNT_dec(PL_registered_mros);
806 /* jettison our possibly duplicated environment */
807 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
808 * so we certainly shouldn't free it here
811 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
812 if (environ != PL_origenviron && !PL_use_safe_putenv
814 /* only main thread can free environ[0] contents */
815 && PL_curinterp == aTHX
821 for (i = 0; environ[i]; i++)
822 safesysfree(environ[i]);
824 /* Must use safesysfree() when working with environ. */
825 safesysfree(environ);
827 environ = PL_origenviron;
830 #endif /* !PERL_MICRO */
832 if (destruct_level == 0) {
834 DEBUG_P(debprofdump());
836 #if defined(PERLIO_LAYERS)
837 /* No more IO - including error messages ! */
838 PerlIO_cleanup(aTHX);
841 CopFILE_free(&PL_compiling);
843 /* The exit() function will do everything that needs doing. */
848 /* the syntax tree is shared between clones
849 * so op_free(PL_main_root) only ReREFCNT_dec's
850 * REGEXPs in the parent interpreter
851 * we need to manually ReREFCNT_dec for the clones
854 I32 i = AvFILLp(PL_regex_padav);
855 SV **ary = AvARRAY(PL_regex_padav);
858 SvREFCNT_dec(ary[i]);
859 ary[i] = &PL_sv_undef;
865 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
866 PL_stashcache = NULL;
868 /* loosen bonds of global variables */
870 /* XXX can PL_parser still be non-null here? */
871 if(PL_parser && PL_parser->rsfp) {
872 (void)PerlIO_close(PL_parser->rsfp);
873 PL_parser->rsfp = NULL;
877 Safefree(PL_splitstr);
887 PL_doswitches = FALSE;
888 PL_dowarn = G_WARN_OFF;
889 #ifdef PERL_SAWAMPERSAND
890 PL_sawampersand = 0; /* must save all match strings */
894 Safefree(PL_inplace);
896 SvREFCNT_dec(PL_patchlevel);
897 SvREFCNT_dec(PL_apiversion);
900 SvREFCNT_dec(PL_e_script);
906 /* magical thingies */
908 SvREFCNT_dec(PL_ofsgv); /* *, */
911 SvREFCNT_dec(PL_ors_sv); /* $\ */
914 SvREFCNT_dec(PL_rs); /* $/ */
917 Safefree(PL_osname); /* $^O */
920 SvREFCNT_dec(PL_statname);
924 /* defgv, aka *_ should be taken care of elsewhere */
927 Safefree(PL_efloatbuf);
931 /* startup and shutdown function lists */
932 SvREFCNT_dec(PL_beginav);
933 SvREFCNT_dec(PL_beginav_save);
934 SvREFCNT_dec(PL_endav);
935 SvREFCNT_dec(PL_checkav);
936 SvREFCNT_dec(PL_checkav_save);
937 SvREFCNT_dec(PL_unitcheckav);
938 SvREFCNT_dec(PL_unitcheckav_save);
939 SvREFCNT_dec(PL_initav);
941 PL_beginav_save = NULL;
944 PL_checkav_save = NULL;
945 PL_unitcheckav = NULL;
946 PL_unitcheckav_save = NULL;
949 /* shortcuts just get cleared */
958 PL_last_in_gv = NULL;
970 SvREFCNT_dec(PL_argvout_stack);
971 PL_argvout_stack = NULL;
973 SvREFCNT_dec(PL_modglobal);
975 SvREFCNT_dec(PL_preambleav);
976 PL_preambleav = NULL;
977 SvREFCNT_dec(PL_subname);
979 #ifdef PERL_USES_PL_PIDSTATUS
980 SvREFCNT_dec(PL_pidstatus);
983 SvREFCNT_dec(PL_toptarget);
985 SvREFCNT_dec(PL_bodytarget);
986 PL_bodytarget = NULL;
987 PL_formtarget = NULL;
989 /* free locale stuff */
990 #ifdef USE_LOCALE_COLLATE
991 Safefree(PL_collation_name);
992 PL_collation_name = NULL;
995 #ifdef USE_LOCALE_NUMERIC
996 Safefree(PL_numeric_name);
997 PL_numeric_name = NULL;
998 SvREFCNT_dec(PL_numeric_radix_sv);
999 PL_numeric_radix_sv = NULL;
1002 /* clear character classes */
1003 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1004 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1005 PL_utf8_swash_ptrs[i] = NULL;
1007 SvREFCNT_dec(PL_utf8_mark);
1008 SvREFCNT_dec(PL_utf8_toupper);
1009 SvREFCNT_dec(PL_utf8_totitle);
1010 SvREFCNT_dec(PL_utf8_tolower);
1011 SvREFCNT_dec(PL_utf8_tofold);
1012 SvREFCNT_dec(PL_utf8_idstart);
1013 SvREFCNT_dec(PL_utf8_idcont);
1014 SvREFCNT_dec(PL_utf8_foldclosures);
1015 PL_utf8_mark = NULL;
1016 PL_utf8_toupper = NULL;
1017 PL_utf8_totitle = NULL;
1018 PL_utf8_tolower = NULL;
1019 PL_utf8_tofold = NULL;
1020 PL_utf8_idstart = NULL;
1021 PL_utf8_idcont = NULL;
1022 PL_utf8_foldclosures = NULL;
1023 for (i = 0; i < POSIX_CC_COUNT; i++) {
1024 SvREFCNT_dec(PL_Posix_ptrs[i]);
1025 PL_Posix_ptrs[i] = NULL;
1027 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1028 PL_L1Posix_ptrs[i] = NULL;
1030 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1031 PL_XPosix_ptrs[i] = NULL;
1034 if (!specialWARN(PL_compiling.cop_warnings))
1035 PerlMemShared_free(PL_compiling.cop_warnings);
1036 PL_compiling.cop_warnings = NULL;
1037 cophh_free(CopHINTHASH_get(&PL_compiling));
1038 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
1039 CopFILE_free(&PL_compiling);
1041 /* Prepare to destruct main symbol table. */
1044 /* break ref loop *:: <=> %:: */
1045 (void)hv_delete(hv, "main::", 6, G_DISCARD);
1048 SvREFCNT_dec(PL_curstname);
1049 PL_curstname = NULL;
1051 /* clear queued errors */
1052 SvREFCNT_dec(PL_errors);
1055 SvREFCNT_dec(PL_isarev);
1058 if (destruct_level >= 2) {
1059 if (PL_scopestack_ix != 0)
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1061 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1062 (long)PL_scopestack_ix);
1063 if (PL_savestack_ix != 0)
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1065 "Unbalanced saves: %ld more saves than restores\n",
1066 (long)PL_savestack_ix);
1067 if (PL_tmps_floor != -1)
1068 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1069 (long)PL_tmps_floor + 1);
1070 if (cxstack_ix != -1)
1071 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1072 (long)cxstack_ix + 1);
1076 SvREFCNT_dec(PL_regex_padav);
1077 PL_regex_padav = NULL;
1078 PL_regex_pad = NULL;
1081 #ifdef PERL_IMPLICIT_CONTEXT
1082 /* the entries in this list are allocated via SV PVX's, so get freed
1083 * in sv_clean_all */
1084 Safefree(PL_my_cxt_list);
1087 /* Now absolutely destruct everything, somehow or other, loops or no. */
1089 /* the 2 is for PL_fdpid and PL_strtab */
1090 while (sv_clean_all() > 2)
1094 Safefree(PL_stashpad); /* must come after sv_clean_all */
1097 AvREAL_off(PL_fdpid); /* no surviving entries */
1098 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
1101 #ifdef HAVE_INTERP_INTERN
1105 /* constant strings */
1106 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1107 SvREFCNT_dec(PL_sv_consts[i]);
1108 PL_sv_consts[i] = NULL;
1111 /* Destruct the global string table. */
1113 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1114 * so that sv_free() won't fail on them.
1115 * Now that the global string table is using a single hunk of memory
1116 * for both HE and HEK, we either need to explicitly unshare it the
1117 * correct way, or actually free things here.
1120 const I32 max = HvMAX(PL_strtab);
1121 HE * const * const array = HvARRAY(PL_strtab);
1122 HE *hent = array[0];
1125 if (hent && ckWARN_d(WARN_INTERNAL)) {
1126 HE * const next = HeNEXT(hent);
1127 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
1128 "Unbalanced string table refcount: (%ld) for \"%s\"",
1129 (long)hent->he_valu.hent_refcount, HeKEY(hent));
1136 hent = array[riter];
1141 HvARRAY(PL_strtab) = 0;
1142 HvTOTALKEYS(PL_strtab) = 0;
1144 SvREFCNT_dec(PL_strtab);
1147 /* free the pointer tables used for cloning */
1148 ptr_table_free(PL_ptr_table);
1149 PL_ptr_table = (PTR_TBL_t*)NULL;
1152 /* free special SVs */
1154 SvREFCNT(&PL_sv_yes) = 0;
1155 sv_clear(&PL_sv_yes);
1156 SvANY(&PL_sv_yes) = NULL;
1157 SvFLAGS(&PL_sv_yes) = 0;
1159 SvREFCNT(&PL_sv_no) = 0;
1160 sv_clear(&PL_sv_no);
1161 SvANY(&PL_sv_no) = NULL;
1162 SvFLAGS(&PL_sv_no) = 0;
1166 for (i=0; i<=2; i++) {
1167 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1168 sv_clear(PERL_DEBUG_PAD(i));
1169 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1170 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1174 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
1175 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
1177 #ifdef DEBUG_LEAKING_SCALARS
1178 if (PL_sv_count != 0) {
1183 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
1184 svend = &sva[SvREFCNT(sva)];
1185 for (sv = sva + 1; sv < svend; ++sv) {
1186 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
1187 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
1189 " refcnt=%"UVuf pTHX__FORMAT "\n"
1190 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1192 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1194 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1196 sv->sv_debug_inpad ? "for" : "by",
1197 sv->sv_debug_optype ?
1198 PL_op_name[sv->sv_debug_optype]: "(none)",
1199 PTR2UV(sv->sv_debug_parent),
1202 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1203 Perl_dump_sv_child(aTHX_ sv);
1209 #ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1213 /* Wait for up to 4 seconds for child to terminate.
1214 This seems to be the least effort way of timing out on reaping
1216 struct timeval waitfor = {4, 0};
1217 int sock = PL_dumper_fd;
1221 FD_SET(sock, &rset);
1222 select(sock + 1, &rset, NULL, NULL, &waitfor);
1223 waitpid(child, &status, WNOHANG);
1228 #ifdef DEBUG_LEAKING_SCALARS_ABORT
1234 #if defined(PERLIO_LAYERS)
1235 /* No more IO - including error messages ! */
1236 PerlIO_cleanup(aTHX);
1239 /* sv_undef needs to stay immortal until after PerlIO_cleanup
1240 as currently layers use it rather than NULL as a marker
1241 for no arg - and will try and SvREFCNT_dec it.
1243 SvREFCNT(&PL_sv_undef) = 0;
1244 SvREADONLY_off(&PL_sv_undef);
1246 Safefree(PL_origfilename);
1247 PL_origfilename = NULL;
1248 Safefree(PL_reg_curpm);
1249 free_tied_hv_pool();
1250 Safefree(PL_op_mask);
1251 Safefree(PL_psig_name);
1252 PL_psig_name = (SV**)NULL;
1253 PL_psig_ptr = (SV**)NULL;
1255 /* We need to NULL PL_psig_pend first, so that
1256 signal handlers know not to use it */
1257 int *psig_save = PL_psig_pend;
1258 PL_psig_pend = (int*)NULL;
1259 Safefree(psig_save);
1262 TAINTING_set(FALSE);
1263 TAINT_WARN_set(FALSE);
1264 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
1267 DEBUG_P(debprofdump());
1269 #ifdef USE_REENTRANT_API
1270 Perl_reentrant_free(aTHX);
1275 while (PL_regmatch_slab) {
1276 regmatch_slab *s = PL_regmatch_slab;
1277 PL_regmatch_slab = PL_regmatch_slab->next;
1281 /* As the absolutely last thing, free the non-arena SV for mess() */
1284 /* we know that type == SVt_PVMG */
1286 /* it could have accumulated taint magic */
1289 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1290 moremagic = mg->mg_moremagic;
1291 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1293 Safefree(mg->mg_ptr);
1297 /* we know that type >= SVt_PV */
1298 SvPV_free(PL_mess_sv);
1299 Safefree(SvANY(PL_mess_sv));
1300 Safefree(PL_mess_sv);
1307 =for apidoc perl_free
1309 Releases a Perl interpreter. See L<perlembed>.
1319 PERL_ARGS_ASSERT_PERL_FREE;
1321 if (PL_veto_cleanup)
1324 #ifdef PERL_TRACK_MEMPOOL
1327 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1328 * value as we're probably hunting memory leaks then
1330 if (PL_perl_destruct_level == 0) {
1331 const U32 old_debug = PL_debug;
1332 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1333 thread at thread exit. */
1335 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1336 "free this thread's memory\n");
1337 PL_debug &= ~ DEBUG_m_FLAG;
1339 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1340 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1341 PL_debug = old_debug;
1346 #if defined(WIN32) || defined(NETWARE)
1347 # if defined(PERL_IMPLICIT_SYS)
1350 void *host = nw_internal_host;
1351 PerlMem_free(aTHXx);
1352 nw_delete_internal_host(host);
1354 void *host = w32_internal_host;
1355 PerlMem_free(aTHXx);
1356 win32_delete_internal_host(host);
1360 PerlMem_free(aTHXx);
1363 PerlMem_free(aTHXx);
1367 #if defined(USE_ITHREADS)
1368 /* provide destructors to clean up the thread key when libperl is unloaded */
1369 #ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1371 #if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
1372 #pragma fini "perl_fini"
1373 #elif defined(__sun) && !defined(__GNUC__)
1374 #pragma fini (perl_fini)
1378 #if defined(__GNUC__)
1379 __attribute__((destructor))
1385 #ifdef PERL_GLOBAL_STRUCT_PRIVATE
1388 PL_curinterp && !PL_veto_cleanup)
1393 #endif /* THREADS */
1396 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
1399 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1400 PL_exitlist[PL_exitlistlen].fn = fn;
1401 PL_exitlist[PL_exitlistlen].ptr = ptr;
1406 S_set_caret_X(pTHX) {
1408 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
1410 SV *const caret_x = GvSV(tmpgv);
1412 sv_setpv(caret_x, os2_execname(aTHX));
1414 # ifdef USE_KERN_PROC_PATHNAME
1419 mib[2] = KERN_PROC_PATHNAME;
1422 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1423 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1424 sv_grow(caret_x, size);
1426 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1428 SvPOK_only(caret_x);
1429 SvCUR_set(caret_x, size - 1);
1434 # elif defined(USE_NSGETEXECUTABLEPATH)
1436 uint32_t size = sizeof(buf);
1438 _NSGetExecutablePath(buf, &size);
1439 if (size < MAXPATHLEN * MAXPATHLEN) {
1440 sv_grow(caret_x, size);
1441 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1442 char *const tidied = realpath(SvPVX(caret_x), NULL);
1444 sv_setpv(caret_x, tidied);
1447 SvPOK_only(caret_x);
1448 SvCUR_set(caret_x, size);
1453 # elif defined(HAS_PROCSELFEXE)
1454 char buf[MAXPATHLEN];
1455 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1457 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1458 includes a spurious NUL which will cause $^X to fail in system
1459 or backticks (this will prevent extensions from being built and
1460 many tests from working). readlink is not meant to add a NUL.
1461 Normal readlink works fine.
1463 if (len > 0 && buf[len-1] == '\0') {
1467 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1468 returning the text "unknown" from the readlink rather than the path
1469 to the executable (or returning an error from the readlink). Any
1470 valid path has a '/' in it somewhere, so use that to validate the
1471 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1473 if (len > 0 && memchr(buf, '/', len)) {
1474 sv_setpvn(caret_x, buf, len);
1478 /* Fallback to this: */
1479 sv_setpv(caret_x, PL_origargv[0]);
1485 =for apidoc perl_parse
1487 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1492 #define SET_CURSTASH(newstash) \
1493 if (PL_curstash != newstash) { \
1494 SvREFCNT_dec(PL_curstash); \
1495 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1499 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1506 PERL_ARGS_ASSERT_PERL_PARSE;
1507 #ifndef MULTIPLICITY
1508 PERL_UNUSED_ARG(my_perl);
1510 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
1512 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1514 if (s && (atoi(s) == 1)) {
1515 unsigned char *seed= PERL_HASH_SEED;
1516 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1517 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1518 while (seed < seed_end) {
1519 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1521 #ifdef PERL_HASH_RANDOMIZE_KEYS
1522 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1523 PL_HASH_RAND_BITS_ENABLED,
1524 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1526 PerlIO_printf(Perl_debug_log, "\n");
1529 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1533 if (PL_origalen != 0) {
1534 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1537 /* Set PL_origalen be the sum of the contiguous argv[]
1538 * elements plus the size of the env in case that it is
1539 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
1540 * as the maximum modifiable length of $0. In the worst case
1541 * the area we are able to modify is limited to the size of
1542 * the original argv[0]. (See below for 'contiguous', though.)
1544 const char *s = NULL;
1547 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
1548 /* Do the mask check only if the args seem like aligned. */
1550 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1552 /* See if all the arguments are contiguous in memory. Note
1553 * that 'contiguous' is a loose term because some platforms
1554 * align the argv[] and the envp[]. If the arguments look
1555 * like non-aligned, assume that they are 'strictly' or
1556 * 'traditionally' contiguous. If the arguments look like
1557 * aligned, we just check that they are within aligned
1558 * PTRSIZE bytes. As long as no system has something bizarre
1559 * like the argv[] interleaved with some other data, we are
1560 * fine. (Did I just evoke Murphy's Law?) --jhi */
1561 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1563 for (i = 1; i < PL_origargc; i++) {
1564 if ((PL_origargv[i] == s + 1
1566 || PL_origargv[i] == s + 2
1571 (PL_origargv[i] > s &&
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1584 #ifndef PERL_USE_SAFE_PUTENV
1585 /* Can we grab env area too to be used as the area for $0? */
1586 if (s && PL_origenviron && !PL_use_safe_putenv) {
1587 if ((PL_origenviron[0] == s + 1)
1590 (PL_origenviron[0] > s &&
1591 PL_origenviron[0] <=
1592 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1595 #ifndef OS2 /* ENVIRON is read by the kernel too. */
1596 s = PL_origenviron[0];
1599 my_setenv("NoNe SuCh", NULL);
1600 /* Force copy of environment. */
1601 for (i = 1; PL_origenviron[i]; i++) {
1602 if (PL_origenviron[i] == s + 1
1605 (PL_origenviron[i] > s &&
1606 PL_origenviron[i] <=
1607 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1610 s = PL_origenviron[i];
1618 #endif /* !defined(PERL_USE_SAFE_PUTENV) */
1620 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
1625 /* Come here if running an undumped a.out. */
1627 PL_origfilename = savepv(argv[0]);
1628 PL_do_undump = FALSE;
1629 cxstack_ix = -1; /* start label stack again */
1631 assert (!TAINT_get);
1633 S_set_caret_X(aTHX);
1635 init_postdump_symbols(argc,argv,env);
1640 op_free(PL_main_root);
1641 PL_main_root = NULL;
1643 PL_main_start = NULL;
1644 SvREFCNT_dec(PL_main_cv);
1648 oldscope = PL_scopestack_ix;
1649 PL_dowarn = G_WARN_OFF;
1654 parse_body(env,xsinit);
1655 if (PL_unitcheckav) {
1656 call_list(oldscope, PL_unitcheckav);
1659 PERL_SET_PHASE(PERL_PHASE_CHECK);
1660 call_list(oldscope, PL_checkav);
1668 /* my_exit() was called */
1669 while (PL_scopestack_ix > oldscope)
1672 SET_CURSTASH(PL_defstash);
1673 if (PL_unitcheckav) {
1674 call_list(oldscope, PL_unitcheckav);
1677 PERL_SET_PHASE(PERL_PHASE_CHECK);
1678 call_list(oldscope, PL_checkav);
1683 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1691 /* This needs to stay in perl.c, as perl.c is compiled with different flags for
1692 miniperl, and we need to see those flags reflected in the values here. */
1694 /* What this returns is subject to change. Use the public interface in Config.
1697 S_Internals_V(pTHX_ CV *cv)
1700 #ifdef LOCAL_PATCH_COUNT
1701 const int local_patch_count = LOCAL_PATCH_COUNT;
1703 const int local_patch_count = 0;
1705 const int entries = 3 + local_patch_count;
1707 static const char non_bincompat_options[] =
1714 # ifdef NO_HASH_SEED
1717 # ifdef NO_TAINT_SUPPORT
1720 # ifdef PERL_DISABLE_PMC
1723 # ifdef PERL_DONT_CREATE_GVSV
1724 " PERL_DONT_CREATE_GVSV"
1726 # ifdef PERL_EXTERNAL_GLOB
1727 " PERL_EXTERNAL_GLOB"
1729 # ifdef PERL_HASH_FUNC_SIPHASH
1730 " PERL_HASH_FUNC_SIPHASH"
1732 # ifdef PERL_HASH_FUNC_SDBM
1733 " PERL_HASH_FUNC_SDBM"
1735 # ifdef PERL_HASH_FUNC_DJB2
1736 " PERL_HASH_FUNC_DJB2"
1738 # ifdef PERL_HASH_FUNC_SUPERFAST
1739 " PERL_HASH_FUNC_SUPERFAST"
1741 # ifdef PERL_HASH_FUNC_MURMUR3
1742 " PERL_HASH_FUNC_MURMUR3"
1744 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1745 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1747 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1748 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1750 # ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1751 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1753 # ifdef PERL_IS_MINIPERL
1756 # ifdef PERL_MALLOC_WRAP
1759 # ifdef PERL_MEM_LOG
1762 # ifdef PERL_MEM_LOG_NOIMPL
1763 " PERL_MEM_LOG_NOIMPL"
1765 # ifdef PERL_NEW_COPY_ON_WRITE
1766 " PERL_NEW_COPY_ON_WRITE"
1768 # ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1769 " PERL_PERTURB_KEYS_DETERMINISTIC"
1771 # ifdef PERL_PERTURB_KEYS_DISABLED
1772 " PERL_PERTURB_KEYS_DISABLED"
1774 # ifdef PERL_PERTURB_KEYS_RANDOM
1775 " PERL_PERTURB_KEYS_RANDOM"
1777 # ifdef PERL_PRESERVE_IVUV
1778 " PERL_PRESERVE_IVUV"
1780 # ifdef PERL_RELOCATABLE_INCPUSH
1781 " PERL_RELOCATABLE_INCPUSH"
1783 # ifdef PERL_USE_DEVEL
1786 # ifdef PERL_USE_SAFE_PUTENV
1787 " PERL_USE_SAFE_PUTENV"
1789 # ifdef UNLINK_ALL_VERSIONS
1790 " UNLINK_ALL_VERSIONS"
1792 # ifdef USE_ATTRIBUTES_FOR_PERLIO
1793 " USE_ATTRIBUTES_FOR_PERLIO"
1795 # ifdef USE_FAST_STDIO
1798 # ifdef USE_HASH_SEED_EXPLICIT
1799 " USE_HASH_SEED_EXPLICIT"
1804 # ifdef USE_LOCALE_CTYPE
1807 # ifdef USE_PERL_ATOF
1810 # ifdef USE_SITECUSTOMIZE
1811 " USE_SITECUSTOMIZE"
1814 PERL_UNUSED_ARG(cv);
1815 PERL_UNUSED_ARG(items);
1817 EXTEND(SP, entries);
1819 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1820 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1821 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1825 PUSHs(Perl_newSVpvn_flags(aTHX_
1826 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1829 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1833 PUSHs(&PL_sv_undef);
1836 for (i = 1; i <= local_patch_count; i++) {
1837 /* This will be an undef, if PL_localpatches[i] is NULL. */
1838 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1844 #define INCPUSH_UNSHIFT 0x01
1845 #define INCPUSH_ADD_OLD_VERS 0x02
1846 #define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1847 #define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1848 #define INCPUSH_NOT_BASEDIR 0x10
1849 #define INCPUSH_CAN_RELOCATE 0x20
1850 #define INCPUSH_ADD_SUB_DIRS \
1851 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
1854 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1858 int argc = PL_origargc;
1859 char **argv = PL_origargv;
1860 const char *scriptname = NULL;
1861 VOL bool dosearch = FALSE;
1863 bool doextract = FALSE;
1864 const char *cddir = NULL;
1865 #ifdef USE_SITECUSTOMIZE
1866 bool minus_f = FALSE;
1868 SV *linestr_sv = NULL;
1869 bool add_read_e_script = FALSE;
1870 U32 lex_start_flags = 0;
1872 PERL_SET_PHASE(PERL_PHASE_START);
1878 for (argc--,argv++; argc > 0; argc--,argv++) {
1879 if (argv[0][0] != '-' || !argv[0][1])
1885 #ifndef PERL_STRICT_CR
1909 if ((s = moreswitches(s)))
1914 #if SILENT_NO_TAINT_SUPPORT
1915 /* silently ignore */
1916 #elif NO_TAINT_SUPPORT
1917 Perl_croak_nocontext("This perl was compiled without taint support. "
1918 "Cowardly refusing to run with -t or -T flags");
1920 CHECK_MALLOC_TOO_LATE_FOR('t');
1921 if( !TAINTING_get ) {
1922 TAINT_WARN_set(TRUE);
1929 #if SILENT_NO_TAINT_SUPPORT
1930 /* silently ignore */
1931 #elif NO_TAINT_SUPPORT
1932 Perl_croak_nocontext("This perl was compiled without taint support. "
1933 "Cowardly refusing to run with -t or -T flags");
1935 CHECK_MALLOC_TOO_LATE_FOR('T');
1937 TAINT_WARN_set(FALSE);
1946 forbid_setid('e', FALSE);
1948 PL_e_script = newSVpvs("");
1949 add_read_e_script = TRUE;
1952 sv_catpv(PL_e_script, s);
1954 sv_catpv(PL_e_script, argv[1]);
1958 Perl_croak(aTHX_ "No code specified for -%c", c);
1959 sv_catpvs(PL_e_script, "\n");
1963 #ifdef USE_SITECUSTOMIZE
1969 case 'I': /* -I handled both here and in moreswitches() */
1970 forbid_setid('I', FALSE);
1971 if (!*++s && (s=argv[1]) != NULL) {
1975 STRLEN len = strlen(s);
1976 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
1979 Perl_croak(aTHX_ "No directory specified for -I");
1982 forbid_setid('S', FALSE);
1991 opts_prog = newSVpvs("use Config; Config::_V()");
1995 opts_prog = Perl_newSVpvf(aTHX_
1996 "use Config; Config::config_vars(qw%c%s%c)",
2000 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
2001 /* don't look for script or read stdin */
2002 scriptname = BIT_BUCKET;
2014 if (!*++s || isSPACE(*s)) {
2018 /* catch use of gnu style long options.
2019 Both of these exit immediately. */
2020 if (strEQ(s, "version"))
2022 if (strEQ(s, "help"))
2027 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
2038 #ifndef SECURE_INTERNAL_GETENV
2041 (s = PerlEnv_getenv("PERL5OPT")))
2045 if (*s == '-' && *(s+1) == 'T') {
2046 #if SILENT_NO_TAINT_SUPPORT
2047 /* silently ignore */
2048 #elif NO_TAINT_SUPPORT
2049 Perl_croak_nocontext("This perl was compiled without taint support. "
2050 "Cowardly refusing to run with -t or -T flags");
2052 CHECK_MALLOC_TOO_LATE_FOR('T');
2054 TAINT_WARN_set(FALSE);
2058 char *popt_copy = NULL;
2071 if (!strchr("CDIMUdmtwW", *s))
2072 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
2076 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2077 s = popt_copy + (s - d);
2085 #if SILENT_NO_TAINT_SUPPORT
2086 /* silently ignore */
2087 #elif NO_TAINT_SUPPORT
2088 Perl_croak_nocontext("This perl was compiled without taint support. "
2089 "Cowardly refusing to run with -t or -T flags");
2091 if( !TAINTING_get) {
2092 TAINT_WARN_set(TRUE);
2104 /* Set $^X early so that it can be used for relocatable paths in @INC */
2105 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2106 assert (!TAINT_get);
2108 S_set_caret_X(aTHX);
2111 #if defined(USE_SITECUSTOMIZE)
2113 /* The games with local $! are to avoid setting errno if there is no
2114 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2115 ie a q() operator with a NUL byte as a the delimiter. This avoids
2116 problems with pathnames containing (say) ' */
2117 # ifdef PERL_IS_MINIPERL
2118 AV *const inc = GvAV(PL_incgv);
2119 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2122 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2123 it should be reported immediately as a build failure. */
2124 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2126 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
2131 /* SITELIB_EXP is a function call on Win32. */
2132 const char *const raw_sitelib = SITELIB_EXP;
2134 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2135 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2136 INCPUSH_CAN_RELOCATE);
2137 const char *const sitelib = SvPVX(sitelib_sv);
2138 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2140 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2143 assert (SvREFCNT(sitelib_sv) == 1);
2144 SvREFCNT_dec(sitelib_sv);
2151 scriptname = argv[0];
2154 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2156 else if (scriptname == NULL) {
2158 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
2164 assert (!TAINT_get);
2168 bool suidscript = FALSE;
2170 rsfp = open_script(scriptname, dosearch, &suidscript);
2172 rsfp = PerlIO_stdin();
2173 lex_start_flags = LEX_DONT_CLOSE_RSFP;
2176 validate_suid(rsfp);
2179 # if defined(SIGCHLD) || defined(SIGCLD)
2182 # define SIGCHLD SIGCLD
2184 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2185 if (sigstate == (Sighandler_t) SIG_IGN) {
2186 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2187 "Can't ignore signal CHLD, forcing to default");
2188 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2196 /* This will croak if suidscript is true, as -x cannot be used with
2198 forbid_setid('x', suidscript);
2199 /* Hence you can't get here if suidscript is true */
2201 linestr_sv = newSV_type(SVt_PV);
2202 lex_start_flags |= LEX_START_COPIED;
2203 find_beginning(linestr_sv, rsfp);
2204 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2205 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2209 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
2210 CvUNIQUE_on(PL_compcv);
2212 CvPADLIST(PL_compcv) = pad_new(0);
2214 PL_isarev = newHV();
2217 boot_core_UNIVERSAL();
2219 newXS("Internals::V", S_Internals_V, __FILE__);
2222 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
2224 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
2230 # ifdef HAS_SOCKS5_INIT
2231 socks5_init(argv[0]);
2237 init_predump_symbols();
2238 /* init_postdump_symbols not currently designed to be called */
2239 /* more than once (ENV isn't cleared first, for example) */
2240 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
2242 init_postdump_symbols(argc,argv,env);
2244 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2245 * or explicitly in some platforms.
2246 * locale.c:Perl_init_i18nl10n() if the environment
2247 * look like the user wants to use UTF-8. */
2248 #if defined(__SYMBIAN32__)
2249 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2251 # ifndef PERL_IS_MINIPERL
2253 /* Requires init_predump_symbols(). */
2254 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
2259 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
2260 * and the default open disciplines. */
2261 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2262 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2264 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2265 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2266 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2268 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2269 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2270 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2272 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2273 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
2274 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2276 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2277 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2280 sv_setpvs(sv, ":utf8\0:utf8");
2282 sv_setpvs(sv, ":utf8\0");
2285 sv_setpvs(sv, "\0:utf8");
2294 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2295 if (strEQ(s, "unsafe"))
2296 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2297 else if (strEQ(s, "safe"))
2298 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2300 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2307 if (!TAINTING_get &&
2308 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2312 PL_xmlfp = PerlIO_stdout();
2314 PL_xmlfp = PerlIO_open(s, "w");
2316 Perl_croak(aTHX_ "Can't open %s", s);
2318 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
2324 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2325 PL_madskills = atoi(s);
2326 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
2331 lex_start(linestr_sv, rsfp, lex_start_flags);
2332 SvREFCNT_dec(linestr_sv);
2334 PL_subname = newSVpvs("main");
2336 if (add_read_e_script)
2337 filter_add(read_e_script, NULL);
2339 /* now parse the script */
2341 SETERRNO(0,SS_NORMAL);
2342 if (yyparse(GRAMPROG) || PL_parser->error_count) {
2344 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
2346 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2350 CopLINE_set(PL_curcop, 0);
2351 SET_CURSTASH(PL_defstash);
2353 SvREFCNT_dec(PL_e_script);
2361 SAVECOPFILE(PL_curcop);
2362 SAVECOPLINE(PL_curcop);
2363 gv_check(PL_defstash);
2372 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2373 dump_mstats("after compilation:");
2378 PL_restartjmpenv = NULL;
2384 =for apidoc perl_run
2386 Tells a Perl interpreter to run. See L<perlembed>.
2399 PERL_ARGS_ASSERT_PERL_RUN;
2400 #ifndef MULTIPLICITY
2401 PERL_UNUSED_ARG(my_perl);
2404 oldscope = PL_scopestack_ix;
2412 cxstack_ix = -1; /* start context stack again */
2414 case 0: /* normal completion */
2418 case 2: /* my_exit() */
2419 while (PL_scopestack_ix > oldscope)
2422 SET_CURSTASH(PL_defstash);
2423 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
2424 PL_endav && !PL_minus_c) {
2425 PERL_SET_PHASE(PERL_PHASE_END);
2426 call_list(oldscope, PL_endav);
2429 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2430 dump_mstats("after execution: ");
2436 POPSTACK_TO(PL_mainstack);
2439 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
2450 S_run_body(pTHX_ I32 oldscope)
2453 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2454 PL_sawampersand ? "Enabling" : "Omitting",
2455 (unsigned int)(PL_sawampersand)));
2457 if (!PL_restartop) {
2461 exit(0); /* less likely to core dump than my_exit(0) */
2465 if (DEBUG_x_TEST || DEBUG_B_TEST)
2466 dump_all_perl(!DEBUG_B_TEST);
2468 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
2472 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
2475 if (PERLDB_SINGLE && PL_DBsingle)
2476 sv_setiv(PL_DBsingle, 1);
2478 PERL_SET_PHASE(PERL_PHASE_INIT);
2479 call_list(oldscope, PL_initav);
2481 #ifdef PERL_DEBUG_READONLY_OPS
2482 if (PL_main_root && PL_main_root->op_slabbed)
2483 Slab_to_ro(OpSLAB(PL_main_root));
2489 PERL_SET_PHASE(PERL_PHASE_RUN);
2492 PL_restartjmpenv = NULL;
2493 PL_op = PL_restartop;
2497 else if (PL_main_start) {
2498 CvDEPTH(PL_main_cv) = 1;
2499 PL_op = PL_main_start;
2503 assert(0); /* NOTREACHED */
2507 =head1 SV Manipulation Functions
2509 =for apidoc p||get_sv
2511 Returns the SV of the specified Perl scalar. C<flags> are passed to
2512 C<gv_fetchpv>. If C<GV_ADD> is set and the
2513 Perl variable does not exist then it will be created. If C<flags> is zero
2514 and the variable does not exist then NULL is returned.
2520 Perl_get_sv(pTHX_ const char *name, I32 flags)
2524 PERL_ARGS_ASSERT_GET_SV;
2526 gv = gv_fetchpv(name, flags, SVt_PV);
2533 =head1 Array Manipulation Functions
2535 =for apidoc p||get_av
2537 Returns the AV of the specified Perl global or package array with the given
2538 name (so it won't work on lexical variables). C<flags> are passed
2539 to C<gv_fetchpv>. If C<GV_ADD> is set and the
2540 Perl variable does not exist then it will be created. If C<flags> is zero
2541 and the variable does not exist then NULL is returned.
2543 Perl equivalent: C<@{"$name"}>.
2549 Perl_get_av(pTHX_ const char *name, I32 flags)
2551 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
2553 PERL_ARGS_ASSERT_GET_AV;
2563 =head1 Hash Manipulation Functions
2565 =for apidoc p||get_hv
2567 Returns the HV of the specified Perl hash. C<flags> are passed to
2568 C<gv_fetchpv>. If C<GV_ADD> is set and the
2569 Perl variable does not exist then it will be created. If C<flags> is zero
2570 and the variable does not exist then NULL is returned.
2576 Perl_get_hv(pTHX_ const char *name, I32 flags)
2578 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
2580 PERL_ARGS_ASSERT_GET_HV;
2590 =head1 CV Manipulation Functions
2592 =for apidoc p||get_cvn_flags
2594 Returns the CV of the specified Perl subroutine. C<flags> are passed to
2595 C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2596 exist then it will be declared (which has the same effect as saying
2597 C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2598 then NULL is returned.
2600 =for apidoc p||get_cv
2602 Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
2608 Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
2610 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
2612 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2614 /* XXX this is probably not what they think they're getting.
2615 * It has the same effect as "sub name;", i.e. just a forward
2617 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2618 return newSTUB(gv,0);
2625 /* Nothing in core calls this now, but we can't replace it with a macro and
2626 move it to mathoms.c as a macro would evaluate name twice. */
2628 Perl_get_cv(pTHX_ const char *name, I32 flags)
2630 PERL_ARGS_ASSERT_GET_CV;
2632 return get_cvn_flags(name, strlen(name), flags);
2635 /* Be sure to refetch the stack pointer after calling these routines. */
2639 =head1 Callback Functions
2641 =for apidoc p||call_argv
2643 Performs a callback to the specified named and package-scoped Perl subroutine
2644 with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2646 Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
2652 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
2654 /* See G_* flags in cop.h */
2655 /* null terminated arg list */
2660 PERL_ARGS_ASSERT_CALL_ARGV;
2665 mXPUSHs(newSVpv(*argv,0));
2670 return call_pv(sub_name, flags);
2674 =for apidoc p||call_pv
2676 Performs a callback to the specified Perl sub. See L<perlcall>.
2682 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
2683 /* name of the subroutine */
2684 /* See G_* flags in cop.h */
2686 PERL_ARGS_ASSERT_CALL_PV;
2688 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
2692 =for apidoc p||call_method
2694 Performs a callback to the specified Perl method. The blessed object must
2695 be on the stack. See L<perlcall>.
2701 Perl_call_method(pTHX_ const char *methname, I32 flags)
2702 /* name of the subroutine */
2703 /* See G_* flags in cop.h */
2707 PERL_ARGS_ASSERT_CALL_METHOD;
2709 len = strlen(methname);
2710 sv = flags & G_METHOD_NAMED
2711 ? sv_2mortal(newSVpvn_share(methname, len,0))
2712 : newSVpvn_flags(methname, len, SVs_TEMP);
2714 return call_sv(sv, flags | G_METHOD);
2717 /* May be called with any of a CV, a GV, or an SV containing the name. */
2719 =for apidoc p||call_sv
2721 Performs a callback to the Perl sub whose name is in the SV. See
2728 Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
2729 /* See G_* flags in cop.h */
2732 LOGOP myop; /* fake syntax tree node */
2738 bool oldcatch = CATCH_GET;
2740 OP* const oldop = PL_op;
2743 PERL_ARGS_ASSERT_CALL_SV;
2745 if (flags & G_DISCARD) {
2749 if (!(flags & G_WANT)) {
2750 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2755 Zero(&myop, 1, LOGOP);
2756 if (!(flags & G_NOARGS))
2757 myop.op_flags |= OPf_STACKED;
2758 myop.op_flags |= OP_GIMME_REVERSE(flags);
2762 EXTEND(PL_stack_sp, 1);
2763 if (!(flags & G_METHOD_NAMED))
2764 *++PL_stack_sp = sv;
2766 oldscope = PL_scopestack_ix;
2768 if (PERLDB_SUB && PL_curstash != PL_debstash
2769 /* Handle first BEGIN of -d. */
2770 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
2771 /* Try harder, since this may have been a sighandler, thus
2772 * curstash may be meaningless. */
2773 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
2774 && !(flags & G_NODEBUG))
2775 myop.op_private |= OPpENTERSUB_DB;
2777 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2778 if ( flags & G_METHOD_NAMED ) {
2779 Zero(&method_svop, 1, SVOP);
2780 method_svop.op_next = (OP*)&myop;
2781 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2782 method_svop.op_type = OP_METHOD_NAMED;
2783 method_svop.op_sv = sv;
2784 PL_op = (OP*)&method_svop;
2786 Zero(&method_unop, 1, UNOP);
2787 method_unop.op_next = (OP*)&myop;
2788 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2789 method_unop.op_type = OP_METHOD;
2790 PL_op = (OP*)&method_unop;
2792 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2793 myop.op_type = OP_ENTERSUB;
2797 if (!(flags & G_EVAL)) {
2799 CALL_BODY_SUB((OP*)&myop);
2800 retval = PL_stack_sp - (PL_stack_base + oldmark);
2801 CATCH_SET(oldcatch);
2804 myop.op_other = (OP*)&myop;
2806 create_eval_scope(flags|G_FAKINGEVAL);
2814 CALL_BODY_SUB((OP*)&myop);
2815 retval = PL_stack_sp - (PL_stack_base + oldmark);
2816 if (!(flags & G_KEEPERR)) {
2824 /* my_exit() was called */
2825 SET_CURSTASH(PL_defstash);
2829 assert(0); /* NOTREACHED */
2832 PL_restartjmpenv = NULL;
2833 PL_op = PL_restartop;
2837 PL_stack_sp = PL_stack_base + oldmark;
2838 if ((flags & G_WANT) == G_ARRAY)
2842 *++PL_stack_sp = &PL_sv_undef;
2847 if (PL_scopestack_ix > oldscope)
2848 delete_eval_scope();
2852 if (flags & G_DISCARD) {
2853 PL_stack_sp = PL_stack_base + oldmark;
2862 /* Eval a string. The G_EVAL flag is always assumed. */
2865 =for apidoc p||eval_sv
2867 Tells Perl to C<eval> the string in the SV. It supports the same flags
2868 as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
2874 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2876 /* See G_* flags in cop.h */
2880 UNOP myop; /* fake syntax tree node */
2881 VOL I32 oldmark = SP - PL_stack_base;
2884 OP* const oldop = PL_op;
2887 PERL_ARGS_ASSERT_EVAL_SV;
2889 if (flags & G_DISCARD) {
2896 Zero(&myop, 1, UNOP);
2897 EXTEND(PL_stack_sp, 1);
2898 *++PL_stack_sp = sv;
2900 if (!(flags & G_NOARGS))
2901 myop.op_flags = OPf_STACKED;
2902 myop.op_type = OP_ENTEREVAL;
2903 myop.op_flags |= OP_GIMME_REVERSE(flags);
2904 if (flags & G_KEEPERR)
2905 myop.op_flags |= OPf_SPECIAL;
2907 if (flags & G_RE_REPARSING)
2908 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
2910 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2911 * before a PUSHEVAL, which corrupts the stack after a croak */
2912 TAINT_PROPER("eval_sv()");
2918 if (PL_op == (OP*)(&myop)) {
2919 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2921 goto fail; /* failed in compilation */
2924 retval = PL_stack_sp - (PL_stack_base + oldmark);
2925 if (!(flags & G_KEEPERR)) {
2933 /* my_exit() was called */
2934 SET_CURSTASH(PL_defstash);
2938 assert(0); /* NOTREACHED */
2941 PL_restartjmpenv = NULL;
2942 PL_op = PL_restartop;
2947 PL_stack_sp = PL_stack_base + oldmark;
2948 if ((flags & G_WANT) == G_ARRAY)
2952 *++PL_stack_sp = &PL_sv_undef;
2958 if (flags & G_DISCARD) {
2959 PL_stack_sp = PL_stack_base + oldmark;
2969 =for apidoc p||eval_pv
2971 Tells Perl to C<eval> the given string and return an SV* result.
2977 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2980 SV* sv = newSVpv(p, 0);
2982 PERL_ARGS_ASSERT_EVAL_PV;
2984 eval_sv(sv, G_SCALAR);
2993 /* just check empty string or undef? */
2994 if (croak_on_error) {
2995 SV * const errsv = ERRSV;
2996 if(SvTRUE_NN(errsv))
2997 /* replace with croak_sv? */
2998 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
3004 /* Require a module. */
3007 =head1 Embedding Functions
3009 =for apidoc p||require_pv
3011 Tells Perl to C<require> the file named by the string argument. It is
3012 analogous to the Perl code C<eval "require '$file'">. It's even
3013 implemented that way; consider using load_module instead.
3018 Perl_require_pv(pTHX_ const char *pv)
3024 PERL_ARGS_ASSERT_REQUIRE_PV;
3026 PUSHSTACKi(PERLSI_REQUIRE);
3028 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3029 eval_sv(sv_2mortal(sv), G_DISCARD);
3035 S_usage(pTHX) /* XXX move this out into a module ? */
3037 /* This message really ought to be max 23 lines.
3038 * Removed -h because the user already knows that option. Others? */
3040 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3041 minimum of 509 character string literals. */
3042 static const char * const usage_msg[] = {
3043 " -0[octal] specify record separator (\\0, if no argument)\n"
3044 " -a autosplit mode with -n or -p (splits $_ into @F)\n"
3045 " -C[number/list] enables the listed Unicode features\n"
3046 " -c check syntax only (runs BEGIN and CHECK blocks)\n"
3047 " -d[:debugger] run program under debugger\n"
3048 " -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3049 " -e program one line of program (several -e's allowed, omit programfile)\n"
3050 " -E program like -e, but enables all optional features\n"
3051 " -f don't do $sitelib/sitecustomize.pl at startup\n"
3052 " -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3053 " -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3054 " -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3055 " -l[octal] enable line ending processing, specifies line terminator\n"
3056 " -[mM][-]module execute \"use/no module...\" before executing program\n"
3057 " -n assume \"while (<>) { ... }\" loop around program\n"
3058 " -p assume loop like -n but print line also, like sed\n"
3059 " -s enable rudimentary parsing for switches after programfile\n"
3060 " -S look for programfile using PATH environment variable\n",
3061 " -t enable tainting warnings\n"
3062 " -T enable tainting checks\n"
3063 " -u dump core after parsing program\n"
3064 " -U allow unsafe operations\n"
3065 " -v print version, patchlevel and license\n"
3066 " -V[:variable] print configuration summary (or a single Config.pm variable)\n",
3067 " -w enable many useful warnings\n"
3068 " -W enable all warnings\n"
3069 " -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3070 " -X disable all warnings\n"
3072 "Run 'perldoc perl' for more help with Perl.\n\n",
3075 const char * const *p = usage_msg;
3076 PerlIO *out = PerlIO_stdout();
3079 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
3082 PerlIO_puts(out, *p++);
3086 /* convert a string of -D options (or digits) into an int.
3087 * sets *s to point to the char after the options */
3091 Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
3093 static const char * const usage_msgd[] = {
3094 " Debugging flag values: (see also -d)\n"
3095 " p Tokenizing and parsing (with v, displays parse stack)\n"
3096 " s Stack snapshots (with v, displays all stacks)\n"
3097 " l Context (loop) stack processing\n"
3098 " t Trace execution\n"
3099 " o Method and overloading resolution\n",
3100 " c String/numeric conversions\n"
3101 " P Print profiling info, source file input state\n"
3102 " m Memory and SV allocation\n"
3103 " f Format processing\n"
3104 " r Regular expression parsing and execution\n"
3105 " x Syntax tree dump\n",
3106 " u Tainting checks\n"
3107 " H Hash dump -- usurps values()\n"
3108 " X Scratchpad allocation\n"
3110 " S Op slab allocation\n"
3112 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3113 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3114 " v Verbose: use in conjunction with other flags\n"
3115 " C Copy On Write\n"
3116 " A Consistency checks on internal structures\n"
3117 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3118 " M trace smart match resolution\n"
3119 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
3124 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3127 /* if adding extra options, remember to update DEBUG_MASK */
3128 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
3130 for (; isWORDCHAR(**s); (*s)++) {
3131 const char * const d = strchr(debopts,**s);
3133 i |= 1 << (d - debopts);
3134 else if (ckWARN_d(WARN_DEBUGGING))
3135 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3136 "invalid option -D%c, use -D'' to see choices\n", **s);
3139 else if (isDIGIT(**s)) {
3141 for (; isWORDCHAR(**s); (*s)++) ;
3143 else if (givehelp) {
3144 const char *const *p = usage_msgd;
3145 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
3148 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3149 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3150 "-Dp not implemented on this platform\n");
3156 /* This routine handles any switches that can be given during run */
3159 Perl_moreswitches(pTHX_ const char *s)
3163 const char option = *s; /* used to remember option in -m/-M code */
3165 PERL_ARGS_ASSERT_MORESWITCHES;
3173 SvREFCNT_dec(PL_rs);
3174 if (s[1] == 'x' && s[2]) {
3175 const char *e = s+=2;
3181 flags = PERL_SCAN_SILENT_ILLDIGIT;
3182 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3183 if (s + numlen < e) {
3184 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3188 PL_rs = newSVpvs("");
3189 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
3190 tmps = (U8*)SvPVX(PL_rs);
3191 uvchr_to_utf8(tmps, rschar);
3192 SvCUR_set(PL_rs, UNISKIP(rschar));
3197 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3198 if (rschar & ~((U8)~0))
3199 PL_rs = &PL_sv_undef;
3200 else if (!rschar && numlen >= 2)
3201 PL_rs = newSVpvs("");
3203 char ch = (char)rschar;
3204 PL_rs = newSVpvn(&ch, 1);
3207 sv_setsv(get_sv("/", GV_ADD), PL_rs);
3212 PL_unicode = parse_unicode_opts( (const char **)&s );
3213 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3221 while (*s && !isSPACE(*s)) ++s;
3222 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
3234 forbid_setid('d', FALSE);
3237 /* -dt indicates to the debugger that threads will be used */
3238 if (*s == 't' && !isWORDCHAR(s[1])) {
3240 my_setenv("PERL5DB_THREADED", "1");
3243 /* The following permits -d:Mod to accepts arguments following an =
3244 in the fashion that -MSome::Mod does. */
3245 if (*s == ':' || *s == '=') {
3252 sv = newSVpvs("no Devel::");
3254 sv = newSVpvs("use Devel::");
3258 end = s + strlen(s);
3260 /* We now allow -d:Module=Foo,Bar and -d:-Module */
3261 while(isWORDCHAR(*s) || *s==':') ++s;
3263 sv_catpvn(sv, start, end - start);
3265 sv_catpvn(sv, start, s-start);
3266 /* Don't use NUL as q// delimiter here, this string goes in the
3268 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
3271 my_setenv("PERL5DB", SvPV_nolen_const(sv));
3275 PL_perldb = PERLDB_ALL;
3282 forbid_setid('D', FALSE);
3284 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
3285 #else /* !DEBUGGING */
3286 if (ckWARN_d(WARN_DEBUGGING))
3287 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3288 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
3289 for (s++; isWORDCHAR(*s); s++) ;
3296 Safefree(PL_inplace);
3297 #if defined(__CYGWIN__) /* do backup extension automagically */
3298 if (*(s+1) == '\0') {
3299 PL_inplace = savepvs(".bak");
3302 #endif /* __CYGWIN__ */
3304 const char * const start = ++s;
3305 while (*s && !isSPACE(*s))
3308 PL_inplace = savepvn(start, s - start);
3312 if (*s == '-') /* Additional switches on #! line. */
3316 case 'I': /* -I handled both here and in parse_body() */
3317 forbid_setid('I', FALSE);
3319 while (*s && isSPACE(*s))
3324 /* ignore trailing spaces (possibly followed by other switches) */
3326 for (e = p; *e && !isSPACE(*e); e++) ;
3330 } while (*p && *p != '-');
3332 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
3338 Perl_croak(aTHX_ "No directory specified for -I");
3344 SvREFCNT_dec(PL_ors_sv);
3350 PL_ors_sv = newSVpvs("\n");
3351 numlen = 3 + (*s == '0');
3352 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
3356 if (RsPARA(PL_rs)) {
3357 PL_ors_sv = newSVpvs("\n\n");
3360 PL_ors_sv = newSVsv(PL_rs);
3365 forbid_setid('M', FALSE); /* XXX ? */
3368 forbid_setid('m', FALSE); /* XXX ? */
3373 const char *use = "use ";
3375 /* -M-foo == 'no foo' */
3376 /* Leading space on " no " is deliberate, to make both
3377 possibilities the same length. */
3378 if (*s == '-') { use = " no "; ++s; }
3379 sv = newSVpvn(use,4);
3381 /* We allow -M'Module qw(Foo Bar)' */
3382 while(isWORDCHAR(*s) || *s==':') {
3391 Perl_croak(aTHX_ "Module name required with -%c option",
3394 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3395 "contains single ':'",
3396 (int)(s - start), start, option);
3397 end = s + strlen(s);
3399 sv_catpvn(sv, start, end - start);
3400 if (option == 'm') {
3402 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
3403 sv_catpvs( sv, " ()");
3406 sv_catpvn(sv, start, s-start);
3407 /* Use NUL as q''-delimiter. */
3408 sv_catpvs(sv, " split(/,/,q\0");
3410 sv_catpvn(sv, s, end - s);
3411 sv_catpvs(sv, "\0)");
3414 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
3417 Perl_croak(aTHX_ "Missing argument to -%c", option);
3428 forbid_setid('s', FALSE);
3429 PL_doswitches = TRUE;
3434 #if SILENT_NO_TAINT_SUPPORT
3435 /* silently ignore */
3436 #elif NO_TAINT_SUPPORT
3437 Perl_croak_nocontext("This perl was compiled without taint support. "
3438 "Cowardly refusing to run with -t or -T flags");
3446 PL_do_undump = TRUE;
3456 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3457 PL_dowarn |= G_WARN_ON;
3462 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3463 if (!specialWARN(PL_compiling.cop_warnings))
3464 PerlMemShared_free(PL_compiling.cop_warnings);
3465 PL_compiling.cop_warnings = pWARN_ALL ;
3469 PL_dowarn = G_WARN_ALL_OFF;
3470 if (!specialWARN(PL_compiling.cop_warnings))
3471 PerlMemShared_free(PL_compiling.cop_warnings);
3472 PL_compiling.cop_warnings = pWARN_NONE ;
3479 if (s[0] == '-') /* Additional switches on #! line. */
3484 #if defined(WIN32) || !defined(PERL_STRICT_CR)
3490 #ifdef ALTERNATE_SHEBANG
3491 case 'S': /* OS/2 needs -S on "extproc" line. */
3494 case 'e': case 'f': case 'x': case 'E':
3495 #ifndef ALTERNATE_SHEBANG
3499 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3502 "Unrecognized switch: -%.1s (-h will show valid options)",s
3512 PerlIO * PIO_stdout;
3513 if (!sv_derived_from(PL_patchlevel, "version"))
3514 upg_version(PL_patchlevel, TRUE);
3516 SV* level= vstringify(PL_patchlevel);
3517 #ifdef PERL_PATCHNUM
3518 # ifdef PERL_GIT_UNCOMMITTED_CHANGES
3519 SV *num = newSVpvs(PERL_PATCHNUM "*");
3521 SV *num = newSVpvs(PERL_PATCHNUM);
3524 STRLEN level_len, num_len;
3525 char * level_str, * num_str;
3526 num_str = SvPV(num, num_len);
3527 level_str = SvPV(level, level_len);
3528 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3529 SvREFCNT_dec(level);
3532 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3537 PIO_stdout = PerlIO_stdout();
3538 PerlIO_printf(PIO_stdout,
3539 "\nThis is perl " STRINGIFY(PERL_REVISION)
3540 ", version " STRINGIFY(PERL_VERSION)
3541 ", subversion " STRINGIFY(PERL_SUBVERSION)
3542 " (%"SVf") built for " ARCHNAME, level
3544 SvREFCNT_dec(level);
3546 #if defined(LOCAL_PATCH_COUNT)
3547 if (LOCAL_PATCH_COUNT > 0)
3548 PerlIO_printf(PIO_stdout,
3549 "\n(with %d registered patch%s, "
3550 "see perl -V for more detail)",
3552 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
3555 PerlIO_printf(PIO_stdout,
3556 "\n\nCopyright 1987-2013, Larry Wall\n");
3558 PerlIO_printf(PIO_stdout,
3559 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
3562 PerlIO_printf(PIO_stdout,
3563 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3564 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
3567 PerlIO_printf(PIO_stdout,
3568 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
3569 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
3572 PerlIO_printf(PIO_stdout,
3573 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
3576 PerlIO_printf(PIO_stdout,
3577 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
3580 PerlIO_printf(PIO_stdout,
3581 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
3584 PerlIO_printf(PIO_stdout,
3585 "WINCE port by Rainer Keuchel, 2001-2002\n"
3586 "Built on " __DATE__ " " __TIME__ "\n\n");
3589 #ifdef __SYMBIAN32__
3590 PerlIO_printf(PIO_stdout,
3591 "Symbian port by Nokia, 2004-2005\n");
3593 #ifdef BINARY_BUILD_NOTICE
3594 BINARY_BUILD_NOTICE;
3596 PerlIO_printf(PIO_stdout,
3598 Perl may be copied only under the terms of either the Artistic License or the\n\
3599 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
3600 Complete documentation for Perl, including FAQ lists, should be found on\n\
3601 this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
3602 Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
3606 /* compliments of Tom Christiansen */
3608 /* unexec() can be found in the Gnu emacs distribution */
3609 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
3612 #include <lib$routines.h>
3616 Perl_my_unexec(pTHX)
3618 PERL_UNUSED_CONTEXT;
3620 SV * prog = newSVpv(BIN_EXP, 0);
3621 SV * file = newSVpv(PL_origfilename, 0);
3625 sv_catpvs(prog, "/perl");
3626 sv_catpvs(file, ".perldump");
3628 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3629 /* unexec prints msg to stderr in case of failure */
3630 PerlProc_exit(status);
3633 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
3634 # elif defined(WIN32) || defined(__CYGWIN__)
3635 Perl_croak(aTHX_ "dump is not supported");
3637 ABORT(); /* for use with undump */
3642 /* initialize curinterp */
3648 # define PERLVAR(prefix,var,type)
3649 # define PERLVARA(prefix,var,n,type)
3650 # if defined(PERL_IMPLICIT_CONTEXT)
3651 # define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3652 # define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3654 # define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3655 # define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
3657 # include "intrpvar.h"
3663 # define PERLVAR(prefix,var,type)
3664 # define PERLVARA(prefix,var,n,type)
3665 # define PERLVARI(prefix,var,type,init) PL_##var = init;
3666 # define PERLVARIC(prefix,var,type,init) PL_##var = init;
3667 # include "intrpvar.h"
3677 S_init_main_stash(pTHX)
3682 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
3683 /* We know that the string "main" will be in the global shared string
3684 table, so it's a small saving to use it rather than allocate another
3686 PL_curstname = newSVpvs_share("main");
3687 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
3688 /* If we hadn't caused another reference to "main" to be in the shared
3689 string table above, then it would be worth reordering these two,
3690 because otherwise all we do is delete "main" from it as a consequence
3691 of the SvREFCNT_dec, only to add it again with hv_name_set */
3692 SvREFCNT_dec(GvHV(gv));
3693 hv_name_set(PL_defstash, "main", 4, 0);
3694 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
3696 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3698 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3699 GvMULTI_on(PL_incgv);
3700 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3701 GvMULTI_on(PL_hintgv);
3702 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
3703 SvREFCNT_inc_simple_void(PL_defgv);
3704 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
3705 SvREFCNT_inc_simple_void(PL_errgv);
3706 GvMULTI_on(PL_errgv);
3707 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3708 GvMULTI_on(PL_replgv);
3709 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
3710 #ifdef PERL_DONT_CREATE_GVSV
3713 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
3715 SET_CURSTASH(PL_defstash);
3716 CopSTASH_set(&PL_compiling, PL_defstash);
3717 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3718 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3720 /* We must init $/ before switches are processed. */
3721 sv_setpvs(get_sv("/", GV_ADD), "\n");
3725 S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
3728 PerlIO *rsfp = NULL;
3732 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3735 PL_origfilename = savepvs("-e");
3738 /* if find_script() returns, it returns a malloc()-ed value */
3739 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
3741 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
3742 const char *s = scriptname + 8;
3748 * Tell apart "normal" usage of fdscript, e.g.
3749 * with bash on FreeBSD:
3750 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3751 * from usage in suidperl.
3752 * Does any "normal" usage leave garbage after the number???
3753 * Is it a mistake to use a similar /dev/fd/ construct for
3758 * Be supersafe and do some sanity-checks.
3759 * Still, can we be sure we got the right thing?
3762 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3765 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3767 scriptname = savepv(s + 1);
3768 Safefree(PL_origfilename);
3769 PL_origfilename = (char *)scriptname;
3774 CopFILE_free(PL_curcop);
3775 CopFILE_set(PL_curcop, PL_origfilename);
3776 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
3777 scriptname = (char *)"";
3778 if (fdscript >= 0) {
3779 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
3781 else if (!*scriptname) {
3782 forbid_setid(0, *suidscript);
3786 #ifdef FAKE_BIT_BUCKET
3787 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3788 * is called) and still have the "-e" work. (Believe it or not,
3789 * a /dev/null is required for the "-e" to work because source
3790 * filter magic is used to implement it. ) This is *not* a general
3791 * replacement for a /dev/null. What we do here is create a temp
3792 * file (an empty file), open up that as the script, and then
3793 * immediately close and unlink it. Close enough for jazz. */
3794 #define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3795 #define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3796 #define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3797 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3798 FAKE_BIT_BUCKET_TEMPLATE
3800 const char * const err = "Failed to create a fake bit bucket";
3801 if (strEQ(scriptname, BIT_BUCKET)) {
3802 #ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
3803 int tmpfd = mkstemp(tmpname);
3805 scriptname = tmpname;
3808 Perl_croak(aTHX_ err);
3811 scriptname = mktemp(tmpname);
3813 Perl_croak(aTHX_ err);
3818 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3819 #ifdef FAKE_BIT_BUCKET
3820 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3821 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3822 && strlen(scriptname) == sizeof(tmpname) - 1) {
3825 scriptname = BIT_BUCKET;
3829 /* PSz 16 Sep 03 Keep neat error message */
3831 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3834 CopFILE(PL_curcop), Strerror(errno));
3836 #if defined(HAS_FCNTL) && defined(F_SETFD)
3837 /* ensure close-on-exec */
3838 fcntl(PerlIO_fileno(rsfp), F_SETFD, 1);
3841 if (PerlLIO_fstat(PerlIO_fileno(rsfp), &tmpstatbuf) >= 0
3842 && S_ISDIR(tmpstatbuf.st_mode))
3843 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3851 * I_SYSSTATVFS HAS_FSTATVFS
3853 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3854 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3855 * here so that metaconfig picks them up. */
3858 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3859 /* Don't even need this function. */
3862 S_validate_suid(pTHX_ PerlIO *rsfp)
3864 const Uid_t my_uid = PerlProc_getuid();
3865 const Uid_t my_euid = PerlProc_geteuid();
3866 const Gid_t my_gid = PerlProc_getgid();
3867 const Gid_t my_egid = PerlProc_getegid();
3869 PERL_ARGS_ASSERT_VALIDATE_SUID;
3871 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
3874 PerlLIO_fstat(PerlIO_fileno(rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3875 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3877 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3880 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3881 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3882 /* not set-id, must be wrapped */
3885 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3888 S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
3894 PERL_ARGS_ASSERT_FIND_BEGINNING;
3896 /* skip forward in input to the real script? */
3899 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
3900 Perl_croak(aTHX_ "No Perl script found in input\n");
3902 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3903 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3904 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3906 while (*s == ' ' || *s == '\t') s++;
3908 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3909 || s2[-1] == '_') s2--;
3910 if (strnEQ(s2-4,"perl",4))
3911 while ((s = moreswitches(s)))
3920 /* no need to do anything here any more if we don't
3922 #if !NO_TAINT_SUPPORT
3924 const Uid_t my_uid = PerlProc_getuid();
3925 const Uid_t my_euid = PerlProc_geteuid();
3926 const Gid_t my_gid = PerlProc_getgid();
3927 const Gid_t my_egid = PerlProc_getegid();
3929 /* Should not happen: */
3930 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
3931 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3935 * Should go by suidscript, not uid!=euid: why disallow
3936 * system("ls") in scripts run from setuid things?
3937 * Or, is this run before we check arguments and set suidscript?
3938 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3939 * (We never have suidscript, can we be sure to have fdscript?)
3940 * Or must then go by UID checks? See comments in forbid_setid also.
3944 /* This is used very early in the lifetime of the program,
3945 * before even the options are parsed, so PL_tainting has
3946 * not been initialized properly. */
3948 Perl_doing_taint(int argc, char *argv[], char *envp[])
3950 #ifndef PERL_IMPLICIT_SYS
3951 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3952 * before we have an interpreter-- and the whole point of this
3953 * function is to be called at such an early stage. If you are on
3954 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3955 * "tainted because running with altered effective ids', you'll
3956 * have to add your own checks somewhere in here. The two most
3957 * known samples of 'implicitness' are Win32 and NetWare, neither
3958 * of which has much of concept of 'uids'. */
3959 Uid_t uid = PerlProc_getuid();
3960 Uid_t euid = PerlProc_geteuid();
3961 Gid_t gid = PerlProc_getgid();
3962 Gid_t egid = PerlProc_getegid();
3969 if (uid && (euid != uid || egid != gid))
3971 #endif /* !PERL_IMPLICIT_SYS */
3972 /* This is a really primitive check; environment gets ignored only
3973 * if -T are the first chars together; otherwise one gets
3974 * "Too late" message. */
3975 if ( argc > 1 && argv[1][0] == '-'
3976 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3981 /* Passing the flag as a single char rather than a string is a slight space
3982 optimisation. The only message that isn't /^-.$/ is
3983 "program input from stdin", which is substituted in place of '\0', which
3984 could never be a command line flag. */
3986 S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
3989 char string[3] = "-x";
3990 const char *message = "program input from stdin";
3997 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
3998 if (PerlProc_getuid() != PerlProc_geteuid())
3999 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
4000 if (PerlProc_getgid() != PerlProc_getegid())
4001 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
4002 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
4004 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
4008 Perl_init_dbargs(pTHX)
4010 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
4015 /* Someone has already created it.
4016 It might have entries, and if we just turn off AvREAL(), they will
4017 "leak" until global destruction. */
4019 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
4020 Perl_croak(aTHX_ "Cannot set tied @DB::args");
4022 AvREIFY_only(PL_dbargs);
4026 Perl_init_debugger(pTHX)
4029 HV * const ostash = PL_curstash;
4031 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
4033 Perl_init_dbargs(aTHX);
4034 PL_DBgv = gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV);
4035 PL_DBline = gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV);
4036 PL_DBsub = gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV));
4037 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4038 if (!SvIOK(PL_DBsingle))
4039 sv_setiv(PL_DBsingle, 0);
4040 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4041 if (!SvIOK(PL_DBtrace))
4042 sv_setiv(PL_DBtrace, 0);
4043 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4044 if (!SvIOK(PL_DBsignal))
4045 sv_setiv(PL_DBsignal, 0);
4046 SvREFCNT_dec(PL_curstash);
4047 PL_curstash = ostash;
4050 #ifndef STRESS_REALLOC
4051 #define REASONABLE(size) (size)
4053 #define REASONABLE(size) (1) /* unreasonable */
4057 Perl_init_stacks(pTHX)
4060 /* start with 128-item stack and 8K cxstack */
4061 PL_curstackinfo = new_stackinfo(REASONABLE(128),
4062 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
4063 PL_curstackinfo->si_type = PERLSI_MAIN;
4064 PL_curstack = PL_curstackinfo->si_stack;
4065 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
4067 PL_stack_base = AvARRAY(PL_curstack);
4068 PL_stack_sp = PL_stack_base;
4069 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
4071 Newx(PL_tmps_stack,REASONABLE(128),SV*);
4074 PL_tmps_max = REASONABLE(128);
4076 Newx(PL_markstack,REASONABLE(32),I32);
4077 PL_markstack_ptr = PL_markstack;
4078 PL_markstack_max = PL_markstack + REASONABLE(32);
4082 Newx(PL_scopestack,REASONABLE(32),I32);
4084 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4086 PL_scopestack_ix = 0;
4087 PL_scopestack_max = REASONABLE(32);
4089 Newx(PL_savestack,REASONABLE(128),ANY);
4090 PL_savestack_ix = 0;
4091 PL_savestack_max = REASONABLE(128);
4100 while (PL_curstackinfo->si_next)
4101 PL_curstackinfo = PL_curstackinfo->si_next;
4102 while (PL_curstackinfo) {
4103 PERL_SI *p = PL_curstackinfo->si_prev;
4104 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
4105 Safefree(PL_curstackinfo->si_cxstack);
4106 Safefree(PL_curstackinfo);
4107 PL_curstackinfo = p;
4109 Safefree(PL_tmps_stack);
4110 Safefree(PL_markstack);
4111 Safefree(PL_scopestack);
4113 Safefree(PL_scopestack_name);
4115 Safefree(PL_savestack);
4119 Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4121 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4122 AV *const isa = GvAVn(gv);
4125 PERL_ARGS_ASSERT_POPULATE_ISA;
4127 if(AvFILLp(isa) != -1)
4130 /* NOTE: No support for tied ISA */
4132 va_start(args, len);
4134 const char *const parent = va_arg(args, const char*);
4139 parent_len = va_arg(args, size_t);
4141 /* Arguments are supplied with a trailing :: */
4142 assert(parent_len > 2);
4143 assert(parent[parent_len - 1] == ':');
4144 assert(parent[parent_len - 2] == ':');
4145 av_push(isa, newSVpvn(parent, parent_len - 2));
4146 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4153 S_init_predump_symbols(pTHX)
4159 sv_setpvs(get_sv("\"", GV_ADD), " ");
4160 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4163 /* Historically, PVIOs were blessed into IO::Handle, unless
4164 FileHandle was loaded, in which case they were blessed into
4165 that. Action at a distance.
4166 However, if we simply bless into IO::Handle, we break code
4167 that assumes that PVIOs will have (among others) a seek
4168 method. IO::File inherits from IO::Handle and IO::Seekable,
4169 and provides the needed methods. But if we simply bless into
4170 it, then we break code that assumed that by loading
4171 IO::Handle, *it* would work.
4172 So a compromise is to set up the correct @IO::File::ISA,
4173 so that code that does C<use IO::Handle>; will still work.
4176 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4177 STR_WITH_LEN("IO::Handle::"),
4178 STR_WITH_LEN("IO::Seekable::"),
4179 STR_WITH_LEN("Exporter::"),
4182 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4183 GvMULTI_on(PL_stdingv);
4184 io = GvIOp(PL_stdingv);
4185 IoTYPE(io) = IoTYPE_RDONLY;
4186 IoIFP(io) = PerlIO_stdin();
4187 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
4189 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4191 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4194 IoTYPE(io) = IoTYPE_WRONLY;
4195 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4197 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
4199 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4201 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
4202 GvMULTI_on(PL_stderrgv);
4203 io = GvIOp(PL_stderrgv);
4204 IoTYPE(io) = IoTYPE_WRONLY;
4205 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
4206 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
4208 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
4210 PL_statname = newSVpvs(""); /* last filename we did stat on */
4214 Perl_init_argv_symbols(pTHX_ int argc, char **argv)
4218 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4220 argc--,argv++; /* skip name of script */
4221 if (PL_doswitches) {
4222 for (; argc > 0 && **argv == '-'; argc--,argv++) {
4226 if (argv[0][1] == '-' && !argv[0][2]) {
4230 if ((s = strchr(argv[0], '='))) {
4231 const char *const start_name = argv[0] + 1;
4232 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4233 TRUE, SVt_PV)), s + 1);
4236 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
4239 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
4240 GvMULTI_on(PL_argvgv);
4241 (void)gv_AVadd(PL_argvgv);
4242 av_clear(GvAVn(PL_argvgv));
4243 for (; argc > 0; argc--,argv++) {
4244 SV * const sv = newSVpv(argv[0],0);
4245 av_push(GvAVn(PL_argvgv),sv);
4246 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4247 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4250 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4251 (void)sv_utf8_decode(sv);
4255 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4256 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4257 "-i used with no filenames on the command line, "
4258 "reading from STDIN");
4262 S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
4267 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4269 PL_toptarget = newSV_type(SVt_PVIV);
4270 sv_setpvs(PL_toptarget, "");
4271 PL_bodytarget = newSV_type(SVt_PVIV);
4272 sv_setpvs(PL_bodytarget, "");
4273 PL_formtarget = PL_bodytarget;
4277 init_argv_symbols(argc,argv);
4279 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
4280 sv_setpv(GvSV(tmpgv),PL_origfilename);
4282 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
4284 bool env_is_not_environ;
4285 GvMULTI_on(PL_envgv);
4286 hv = GvHVn(PL_envgv);
4287 hv_magic(hv, NULL, PERL_MAGIC_env);
4289 #ifdef USE_ENVIRON_ARRAY
4290 /* Note that if the supplied env parameter is actually a copy
4291 of the global environ then it may now point to free'd memory
4292 if the environment has been modified since. To avoid this
4293 problem we treat env==NULL as meaning 'use the default'
4297 env_is_not_environ = env != environ;
4298 if (env_is_not_environ
4299 # ifdef USE_ITHREADS
4300 && PL_curinterp == aTHX
4309 for (; *env; env++) {
4312 if (!(s = strchr(old_var,'=')) || s == old_var)
4315 #if defined(MSDOS) && !defined(DJGPP)
4317 (void)strupr(old_var);
4320 sv = newSVpv(s+1, 0);
4321 (void)hv_store(hv, old_var, s - old_var, sv, 0);
4322 if (env_is_not_environ)
4326 #endif /* USE_ENVIRON_ARRAY */
4327 #endif /* !PERL_MICRO */
4331 /* touch @F array to prevent spurious warnings 20020415 MJD */
4333 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
4338 S_init_perllib(pTHX)
4342 const char *perl5lib = NULL;
4345 #if defined(WIN32) && !defined(PERL_IS_MINIPERL)
4349 if (!TAINTING_get) {
4351 perl5lib = PerlEnv_getenv("PERL5LIB");
4353 * It isn't possible to delete an environment variable with
4354 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4355 * case we treat PERL5LIB as undefined if it has a zero-length value.
4357 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4358 if (perl5lib && *perl5lib != '\0')
4362 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
4364 s = PerlEnv_getenv("PERLLIB");
4366 incpush_use_sep(s, 0, 0);
4369 /* Treat PERL5?LIB as a possible search list logical name -- the
4370 * "natural" VMS idiom for a Unix path string. We allow each
4371 * element to be a set of |-separated directories for compatibility.
4375 if (my_trnlnm("PERL5LIB",buf,0))
4377 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
4378 } while (my_trnlnm("PERL5LIB",buf,++idx));
4380 while (my_trnlnm("PERLLIB",buf,idx++))
4381 incpush_use_sep(buf, 0, 0);
4386 #ifndef PERL_IS_MINIPERL
4387 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4388 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4390 /* Use the ~-expanded versions of APPLLIB (undocumented),
4391 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
4394 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4395 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4399 /* sitearch is always relative to sitelib on Windows for
4400 * DLL-based path intuition to work correctly */
4401 # if !defined(WIN32)
4402 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4403 INCPUSH_CAN_RELOCATE);
4409 /* this picks up sitearch as well */
4410 s = win32_get_sitelib(PERL_FS_VERSION, &len);
4412 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4414 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
4418 #ifdef PERL_VENDORARCH_EXP
4419 /* vendorarch is always relative to vendorlib on Windows for
4420 * DLL-based path intuition to work correctly */
4421 # if !defined(WIN32)
4422 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4423 INCPUSH_CAN_RELOCATE);
4427 #ifdef PERL_VENDORLIB_EXP
4429 /* this picks up vendorarch as well */
4430 s = win32_get_vendorlib(PERL_FS_VERSION, &len);
4432 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4434 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4435 INCPUSH_CAN_RELOCATE);
4440 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
4444 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4448 s = win32_get_privlib(PERL_FS_VERSION, &len);
4450 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
4453 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
4455 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
4459 #ifdef PERL_OTHERLIBDIRS
4460 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4461 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
4462 |INCPUSH_CAN_RELOCATE);
4465 if (!TAINTING_get) {
4468 * It isn't possible to delete an environment variable with
4469 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4470 * case we treat PERL5LIB as undefined if it has a zero-length value.
4472 #if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
4473 if (perl5lib && *perl5lib != '\0')
4477 incpush_use_sep(perl5lib, 0,
4478 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4480 /* Treat PERL5?LIB as a possible search list logical name -- the
4481 * "natural" VMS idiom for a Unix path string. We allow each
4482 * element to be a set of |-separated directories for compatibility.
4486 if (my_trnlnm("PERL5LIB",buf,0))
4488 incpush_use_sep(buf, 0,
4489 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
4490 } while (my_trnlnm("PERL5LIB",buf,++idx));
4494 /* Use the ~-expanded versions of APPLLIB (undocumented),
4495 SITELIB and VENDORLIB for older versions
4498 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4499 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
4502 #if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4503 /* Search for version-specific dirs below here */
4504 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4505 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4509 #if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4510 /* Search for version-specific dirs below here */
4511 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4512 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
4515 #ifdef PERL_OTHERLIBDIRS
4516 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4517 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4518 |INCPUSH_CAN_RELOCATE);
4520 #endif /* !PERL_IS_MINIPERL */
4523 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
4526 #if defined(DOSISH) || defined(__SYMBIAN32__)
4527 # define PERLLIB_SEP ';'
4530 # define PERLLIB_SEP '|'
4532 # define PERLLIB_SEP ':'
4535 #ifndef PERLLIB_MANGLE
4536 # define PERLLIB_MANGLE(s,n) (s)
4539 #ifndef PERL_IS_MINIPERL
4540 /* Push a directory onto @INC if it exists.
4541 Generate a new SV if we do this, to save needing to copy the SV we push
4544 S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
4549 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4551 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
4552 S_ISDIR(tmpstatbuf.st_mode)) {
4554 dir = newSVsv(stem);
4556 /* Truncate dir back to stem. */
4557 SvCUR_set(dir, SvCUR(stem));
4564 S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
4566 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
4569 PERL_ARGS_ASSERT_MAYBERELOCATE;
4572 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4573 defined to so something (in os2/os2.c), but the code has been
4574 this way, ignoring any possible changed of length, since
4575 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4577 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
4583 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4585 while (unix[len-1] == '/') len--; /* Cosmetic */
4586 sv_usepvn(libdir,unix,len);
4589 PerlIO_printf(Perl_error_log,
4590 "Failed to unixify @INC element \"%s\"\n",
4591 SvPV_nolen_const(libdir));
4595 /* Do the if() outside the #ifdef to avoid warnings about an unused
4598 #ifdef PERL_RELOCATABLE_INC
4600 * Relocatable include entries are marked with a leading .../
4603 * 0: Remove that leading ".../"
4604 * 1: Remove trailing executable name (anything after the last '/')
4605 * from the perl path to give a perl prefix
4607 * While the @INC element starts "../" and the prefix ends with a real
4608 * directory (ie not . or ..) chop that real directory off the prefix
4609 * and the leading "../" from the @INC element. ie a logical "../"
4611 * Finally concatenate the prefix and the remainder of the @INC element
4612 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4613 * generates /usr/local/lib/perl5
4615 const char *libpath = SvPVX(libdir);
4616 STRLEN libpath_len = SvCUR(libdir);
4617 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4619 SV * const caret_X = get_sv("\030", 0);
4620 /* Going to use the SV just as a scratch buffer holding a C
4626 /* $^X is *the* source of taint if tainting is on, hence
4627 SvPOK() won't be true. */
4629 assert(SvPOKp(caret_X));
4630 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4632 /* Firstly take off the leading .../
4633 If all else fail we'll do the paths relative to the current
4635 sv_chop(libdir, libpath + 4);
4636 /* Don't use SvPV as we're intentionally bypassing taining,
4637 mortal copies that the mg_get of tainting creates, and
4638 corruption that seems to come via the save stack.
4639 I guess that the save stack isn't correctly set up yet. */
4640 libpath = SvPVX(libdir);
4641 libpath_len = SvCUR(libdir);
4643 /* This would work more efficiently with memrchr, but as it's
4644 only a GNU extension we'd need to probe for it and
4645 implement our own. Not hard, but maybe not worth it? */
4647 prefix = SvPVX(prefix_sv);
4648 lastslash = strrchr(prefix, '/');
4650 /* First time in with the *lastslash = '\0' we just wipe off
4651 the trailing /perl from (say) /usr/foo/bin/perl
4655 while ((*lastslash = '\0'), /* Do that, come what may. */
4656 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4657 && (lastslash = strrchr(prefix, '/')))) {
4658 if (lastslash[1] == '\0'
4659 || (lastslash[1] == '.'
4660 && (lastslash[2] == '/' /* ends "/." */
4661 || (lastslash[2] == '/'
4662 && lastslash[3] == '/' /* or "/.." */
4664 /* Prefix ends "/" or "/." or "/..", any of which
4665 are fishy, so don't do any more logical cleanup.
4669 /* Remove leading "../" from path */
4672 /* Next iteration round the loop removes the last
4673 directory name from prefix by writing a '\0' in
4674 the while clause. */
4676 /* prefix has been terminated with a '\0' to the correct
4677 length. libpath points somewhere into the libdir SV.
4678 We need to join the 2 with '/' and drop the result into
4680 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4681 SvREFCNT_dec(libdir);
4682 /* And this is the new libdir. */
4685 (PerlProc_getuid() != PerlProc_geteuid() ||
4686 PerlProc_getgid() != PerlProc_getegid())) {
4687 /* Need to taint relocated paths if running set ID */
4688 SvTAINTED_on(libdir);
4691 SvREFCNT_dec(prefix_sv);
4699 S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4702 #ifndef PERL_IS_MINIPERL
4703 const U8 using_sub_dirs
4704 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4705 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4706 const U8 add_versioned_sub_dirs
4707 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4708 const U8 add_archonly_sub_dirs
4709 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4710 #ifdef PERL_INC_VERSION_LIST
4711 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4714 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4715 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4716 AV *const inc = GvAVn(PL_incgv);
4718 PERL_ARGS_ASSERT_INCPUSH;
4721 /* Could remove this vestigial extra block, if we don't mind a lot of
4722 re-indenting diff noise. */
4724 SV *const libdir = mayberelocate(dir, len, flags);
4725 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4726 arranged to unshift #! line -I onto the front of @INC. However,
4727 -I can add version and architecture specific libraries, and they
4728 need to go first. The old code assumed that it was always
4729 pushing. Hence to make it work, need to push the architecture
4730 (etc) libraries onto a temporary array, then "unshift" that onto
4731 the front of @INC. */
4732 #ifndef PERL_IS_MINIPERL
4733 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
4736 * BEFORE pushing libdir onto @INC we may first push version- and
4737 * archname-specific sub-directories.
4739 if (using_sub_dirs) {
4740 SV *subdir = newSVsv(libdir);
4741 #ifdef PERL_INC_VERSION_LIST
4742 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4743 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4744 const char * const *incver;
4747 if (add_versioned_sub_dirs) {
4748 /* .../version/archname if -d .../version/archname */
4749 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
4750 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4752 /* .../version if -d .../version */
4753 sv_catpvs(subdir, "/" PERL_FS_VERSION);
4754 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4757 #ifdef PERL_INC_VERSION_LIST
4759 for (incver = incverlist; *incver; incver++) {
4760 /* .../xxx if -d .../xxx */
4761 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
4762 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4767 if (add_archonly_sub_dirs) {
4768 /* .../archname if -d .../archname */
4769 sv_catpvs(subdir, "/" ARCHNAME);
4770 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4774 assert (SvREFCNT(subdir) == 1);
4775 SvREFCNT_dec(subdir);
4777 #endif /* !PERL_IS_MINIPERL */
4778 /* finally add this lib directory at the end of @INC */
4780 #ifdef PERL_IS_MINIPERL
4781 const Size_t extra = 0;
4783 Size_t extra = av_len(av) + 1;
4785 av_unshift(inc, extra + push_basedir);
4787 av_store(inc, extra, libdir);
4788 #ifndef PERL_IS_MINIPERL
4790 /* av owns a reference, av_store() expects to be donated a
4791 reference, and av expects to be sane when it's cleared.
4792 If I wanted to be naughty and wrong, I could peek inside the
4793 implementation of av_clear(), realise that it uses
4794 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4795 and so directly steal from it (with a memcpy() to inc, and
4796 then memset() to NULL them out. But people copy code from the
4797 core expecting it to be best practise, so let's use the API.
4798 Although studious readers will note that I'm not checking any
4800 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4805 else if (push_basedir) {
4806 av_push(inc, libdir);
4809 if (!push_basedir) {
4810 assert (SvREFCNT(libdir) == 1);
4811 SvREFCNT_dec(libdir);
4817 S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
4821 /* This logic has been broken out from S_incpush(). It may be possible to
4824 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4826 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4827 * argument to incpush_use_sep. This allows creation of relocatable
4828 * Perl distributions that patch the binary at install time. Those
4829 * distributions will have to provide their own relocation tools; this
4830 * is not a feature otherwise supported by core Perl.
4832 #ifndef PERL_RELOCATABLE_INCPUSH
4839 /* Break at all separators */
4840 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
4842 /* skip any consecutive separators */
4844 /* Uncomment the next line for PATH semantics */
4845 /* But you'll need to write tests */
4846 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
4848 incpush(p, (STRLEN)(s - p), flags);
4853 incpush(p, (STRLEN)(end - p), flags);
4858 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4862 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
4868 PERL_ARGS_ASSERT_CALL_LIST;
4870 while (av_len(paramList) >= 0) {
4871 cv = MUTABLE_CV(av_shift(paramList));
4873 if (paramList == PL_beginav) {
4874 /* save PL_beginav for compiler */
4875 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
4877 else if (paramList == PL_checkav) {
4878 /* save PL_checkav for compiler */
4879 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
4881 else if (paramList == PL_unitcheckav) {
4882 /* save PL_unitcheckav for compiler */
4883 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
4894 PL_madskills |= 16384;
4899 PL_madskills &= ~16384;
4902 (void)SvPV_const(atsv, len);
4904 PL_curcop = &PL_compiling;
4905 CopLINE_set(PL_curcop, oldline);
4906 if (paramList == PL_beginav)
4907 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
4909 Perl_sv_catpvf(aTHX_ atsv,
4910 "%s failed--call queue aborted",
4911 paramList == PL_checkav ? "CHECK"
4912 : paramList == PL_initav ? "INIT"
4913 : paramList == PL_unitcheckav ? "UNITCHECK"
4915 while (PL_scopestack_ix > oldscope)
4918 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
4925 /* my_exit() was called */
4926 while (PL_scopestack_ix > oldscope)
4929 SET_CURSTASH(PL_defstash);
4930 PL_curcop = &PL_compiling;
4931 CopLINE_set(PL_curcop, oldline);
4934 assert(0); /* NOTREACHED */
4937 PL_curcop = &PL_compiling;
4938 CopLINE_set(PL_curcop, oldline);
4941 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
4950 Perl_my_exit(pTHX_ U32 status)
4953 if (PL_exit_flags & PERL_EXIT_ABORT) {
4956 if (PL_exit_flags & PERL_EXIT_WARN) {
4957 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
4958 Perl_warn(aTHX_ "Unexpected exit %u", status);
4959 PL_exit_flags &= ~PERL_EXIT_ABORT;
4969 STATUS_EXIT_SET(status);
4976 Perl_my_failure_exit(pTHX)
4980 /* We have been called to fall on our sword. The desired exit code
4981 * should be already set in STATUS_UNIX, but could be shifted over
4982 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4985 * If an error code has not been set, then force the issue.
4987 if (MY_POSIX_EXIT) {
4989 /* According to the die_exit.t tests, if errno is non-zero */
4990 /* It should be used for the error status. */
4992 if (errno == EVMSERR) {
4993 STATUS_NATIVE = vaxc$errno;
4996 /* According to die_exit.t tests, if the child_exit code is */
4997 /* also zero, then we need to exit with a code of 255 */
4998 if ((errno != 0) && (errno < 256))
4999 STATUS_UNIX_EXIT_SET(errno);
5000 else if (STATUS_UNIX < 255) {
5001 STATUS_UNIX_EXIT_SET(255);
5006 /* The exit code could have been set by $? or vmsish which
5007 * means that it may not have fatal set. So convert
5008 * success/warning codes to fatal with out changing
5009 * the POSIX status code. The severity makes VMS native
5010 * status handling work, while UNIX mode programs use the
5011 * the POSIX exit codes.
5013 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
5014 STATUS_NATIVE &= STS$M_COND_ID;
5015 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5019 /* Traditionally Perl on VMS always expects a Fatal Error. */
5020 if (vaxc$errno & 1) {
5022 /* So force success status to failure */
5023 if (STATUS_NATIVE & 1)
5028 STATUS_UNIX = EINTR; /* In case something cares */
5033 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5035 /* Encode the severity code */
5036 severity = STATUS_NATIVE & STS$M_SEVERITY;
5037 STATUS_UNIX = (severity ? severity : 1) << 8;
5039 /* Perl expects this to be a fatal error */
5040 if (severity != STS$K_SEVERE)
5049 STATUS_UNIX_SET(errno);
5051 exitstatus = STATUS_UNIX >> 8;
5052 if (exitstatus & 255)
5053 STATUS_UNIX_SET(exitstatus);
5055 STATUS_UNIX_SET(255);
5058 if (PL_exit_flags & PERL_EXIT_ABORT) {
5061 if (PL_exit_flags & PERL_EXIT_WARN) {
5062 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
5063 Perl_warn(aTHX_ "Unexpected exit failure %u", PL_statusvalue);
5064 PL_exit_flags &= ~PERL_EXIT_ABORT;
5070 S_my_exit_jump(pTHX)
5075 SvREFCNT_dec(PL_e_script);
5079 POPSTACK_TO(PL_mainstack);
5087 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
5090 const char * const p = SvPVX_const(PL_e_script);
5091 const char *nl = strchr(p, '\n');
5093 PERL_UNUSED_ARG(idx);
5094 PERL_UNUSED_ARG(maxlen);
5096 nl = (nl) ? nl+1 : SvEND(PL_e_script);
5098 filter_del(read_e_script);
5101 sv_catpvn(buf_sv, p, nl-p);
5102 sv_chop(PL_e_script, nl);
5108 * c-indentation-style: bsd
5110 * indent-tabs-mode: nil
5113 * ex: set ts=8 sts=4 sw=4 et: