This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
In vms/vms.c, don't prototype decw$term_port until after
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
352d5a3a
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
JH
110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
NC
160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
e6827a76
NC
163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
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170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76
NC
173 }
174 else {
175 PERL_SET_THX(my_perl);
176 }
177}
06d86050 178
32e30700
GS
179#ifdef PERL_IMPLICIT_SYS
180PerlInterpreter *
7766f137
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181perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
182 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
183 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
184 struct IPerlDir* ipD, struct IPerlSock* ipS,
185 struct IPerlProc* ipP)
186{
187 PerlInterpreter *my_perl;
9f653bb5 188 /* Newx() needs interpreter, so call malloc() instead */
32e30700 189 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 190 S_init_tls_and_interp(my_perl);
32e30700
GS
191 Zero(my_perl, 1, PerlInterpreter);
192 PL_Mem = ipM;
7766f137
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193 PL_MemShared = ipMS;
194 PL_MemParse = ipMP;
32e30700
GS
195 PL_Env = ipE;
196 PL_StdIO = ipStd;
197 PL_LIO = ipLIO;
198 PL_Dir = ipD;
199 PL_Sock = ipS;
200 PL_Proc = ipP;
7cb608b5 201 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 202
32e30700
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203 return my_perl;
204}
205#else
954c1994
GS
206
207/*
ccfc67b7
JH
208=head1 Embedding Functions
209
954c1994
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210=for apidoc perl_alloc
211
212Allocates a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
93a17b20 217PerlInterpreter *
cea2e8a9 218perl_alloc(void)
79072805 219{
cea2e8a9 220 PerlInterpreter *my_perl;
79072805 221
9f653bb5 222 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 223 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 224
e6827a76 225 S_init_tls_and_interp(my_perl);
7cb608b5 226#ifndef PERL_TRACK_MEMPOOL
07409e01 227 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
228#else
229 Zero(my_perl, 1, PerlInterpreter);
230 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
231 return my_perl;
232#endif
79072805 233}
32e30700 234#endif /* PERL_IMPLICIT_SYS */
79072805 235
954c1994
GS
236/*
237=for apidoc perl_construct
238
239Initializes a new Perl interpreter. See L<perlembed>.
240
241=cut
242*/
243
79072805 244void
0cb96387 245perl_construct(pTHXx)
79072805 246{
27da23d5 247 dVAR;
ed6c66dd 248 PERL_UNUSED_ARG(my_perl);
8990e307 249#ifdef MULTIPLICITY
54aff467 250 init_interp();
ac27b0f5 251 PL_perl_destruct_level = 1;
54aff467
GS
252#else
253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
33f46ff6 256 /* Init the real globals (and main thread)? */
3280af22 257 if (!PL_linestr) {
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258 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
259
561b68a9 260 PL_linestr = newSV(79);
3280af22 261 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 262
3280af22 263 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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264 /* set read-only and try to insure than we wont see REFCNT==0
265 very often */
266
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267 SvREADONLY_on(&PL_sv_undef);
268 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 269
3280af22 270 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
271 /* value lookup in void context - happens to have the side effect
272 of caching the numeric forms. */
273 SvIV(&PL_sv_no);
3280af22
NIS
274 SvNV(&PL_sv_no);
275 SvREADONLY_on(&PL_sv_no);
276 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 277
3280af22 278 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 279 SvIV(&PL_sv_yes);
3280af22
NIS
280 SvNV(&PL_sv_yes);
281 SvREADONLY_on(&PL_sv_yes);
282 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
283
284 SvREADONLY_on(&PL_sv_placeholder);
285 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 286 }
79072805 287
8aad04aa 288 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 289#ifdef PERL_USES_PL_PIDSTATUS
3280af22 290 PL_pidstatus = newHV();
ca0c25f6 291#endif
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292 }
293
396482e1 294 PL_rs = newSVpvs("\n");
dc92893f 295
cea2e8a9 296 init_stacks();
79072805 297
748a9306 298 init_ids();
3280af22 299 PL_lex_state = LEX_NOTPARSING;
a5f75d66 300
312caa8e 301 JMPENV_BOOTSTRAP;
f86702cc
PP
302 STATUS_ALL_SUCCESS;
303
0672f40e 304 init_i18nl10n(1);
36477c24 305 SET_NUMERIC_STANDARD();
0b5b802d 306
ab821d7f 307#if defined(LOCAL_PATCH_COUNT)
3280af22 308 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
309#endif
310
52853b95
GS
311#ifdef HAVE_INTERP_INTERN
312 sys_intern_init();
313#endif
314
3a1ee7e8 315 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 316
3280af22
NIS
317 PL_fdpid = newAV(); /* for remembering popen pids by fd */
318 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 319 PL_errors = newSVpvs("");
48c6b404 320 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
321 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
322 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 323#ifdef USE_ITHREADS
13137afc
AB
324 PL_regex_padav = newAV();
325 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
326 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 327#endif
e5dd39fc 328#ifdef USE_REENTRANT_API
59bd0823 329 Perl_reentrant_init(aTHX);
e5dd39fc 330#endif
3d47000e
AB
331
332 /* Note that strtab is a rather special HV. Assumptions are made
333 about not iterating on it, and not adding tie magic to it.
334 It is properly deallocated in perl_destruct() */
335 PL_strtab = newHV();
336
3d47000e
AB
337 HvSHAREKEYS_off(PL_strtab); /* mandatory */
338 hv_ksplit(PL_strtab, 512);
339
0631ea03
AB
340#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
341 _dyld_lookup_and_bind
342 ("__environ", (unsigned long *) &environ_pointer, NULL);
343#endif /* environ */
344
2f42fcb0
JH
345#ifndef PERL_MICRO
346# ifdef USE_ENVIRON_ARRAY
0631ea03 347 PL_origenviron = environ;
2f42fcb0 348# endif
0631ea03
AB
349#endif
350
5311654c 351 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 352 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
353 * BeOS has those, but returns the wrong value.
354 * The HZ if not originally defined has been by now
355 * been defined as CLK_TCK, if available. */
dbc1d986 356#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
357 PL_clocktick = sysconf(_SC_CLK_TCK);
358 if (PL_clocktick <= 0)
359#endif
360 PL_clocktick = HZ;
361
081fc587
AB
362 PL_stashcache = newHV();
363
e6830b13
NC
364 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
365 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 366
27da23d5
JH
367#ifdef HAS_MMAP
368 if (!PL_mmap_page_size) {
369#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
370 {
371 SETERRNO(0, SS_NORMAL);
372# ifdef _SC_PAGESIZE
373 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
374# else
375 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
376# endif
377 if ((long) PL_mmap_page_size < 0) {
378 if (errno) {
44f8325f 379 SV * const error = ERRSV;
d4c19fe8 380 SvUPGRADE(error, SVt_PV);
0510663f 381 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
382 }
383 else
384 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
385 }
386 }
387#else
388# ifdef HAS_GETPAGESIZE
389 PL_mmap_page_size = getpagesize();
390# else
391# if defined(I_SYS_PARAM) && defined(PAGESIZE)
392 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
393# endif
394# endif
395#endif
396 if (PL_mmap_page_size <= 0)
397 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
398 (IV) PL_mmap_page_size);
399 }
400#endif /* HAS_MMAP */
401
402#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
403 PL_timesbase.tms_utime = 0;
404 PL_timesbase.tms_stime = 0;
405 PL_timesbase.tms_cutime = 0;
406 PL_timesbase.tms_cstime = 0;
407#endif
408
5336380d
NC
409#ifdef PERL_MAD
410 PL_curforce = -1;
411#endif
412
8990e307 413 ENTER;
79072805
LW
414}
415
954c1994 416/*
62375a60
NIS
417=for apidoc nothreadhook
418
419Stub that provides thread hook for perl_destruct when there are
420no threads.
421
422=cut
423*/
424
425int
4e9e3734 426Perl_nothreadhook(pTHX)
62375a60 427{
96a5add6 428 PERL_UNUSED_CONTEXT;
62375a60
NIS
429 return 0;
430}
431
41e4abd8
NC
432#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
433void
434Perl_dump_sv_child(pTHX_ SV *sv)
435{
436 ssize_t got;
bf357333
NC
437 const int sock = PL_dumper_fd;
438 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
439 union control_un control;
440 struct msghdr msg;
808ad2d0 441 struct iovec vec[2];
bf357333 442 struct cmsghdr *cmptr;
808ad2d0
NC
443 int returned_errno;
444 unsigned char buffer[256];
41e4abd8 445
bf357333 446 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
447 return;
448
449 PerlIO_flush(Perl_debug_log);
450
bf357333
NC
451 /* All these shenanigans are to pass a file descriptor over to our child for
452 it to dump out to. We can't let it hold open the file descriptor when it
453 forks, as the file descriptor it will dump to can turn out to be one end
454 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 455 be open, the wait would be forever.) */
bf357333
NC
456
457 msg.msg_control = control.control;
458 msg.msg_controllen = sizeof(control.control);
459 /* We're a connected socket so we don't need a destination */
460 msg.msg_name = NULL;
461 msg.msg_namelen = 0;
462 msg.msg_iov = vec;
808ad2d0 463 msg.msg_iovlen = 1;
bf357333
NC
464
465 cmptr = CMSG_FIRSTHDR(&msg);
466 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
467 cmptr->cmsg_level = SOL_SOCKET;
468 cmptr->cmsg_type = SCM_RIGHTS;
469 *((int *)CMSG_DATA(cmptr)) = 1;
470
471 vec[0].iov_base = (void*)&sv;
472 vec[0].iov_len = sizeof(sv);
473 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
474
475 if(got < 0) {
bf357333 476 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
477 abort();
478 }
bf357333
NC
479 if(got < sizeof(sv)) {
480 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
481 abort();
482 }
483
808ad2d0
NC
484 /* Return protocol is
485 int: errno value
486 unsigned char: length of location string (0 for empty)
487 unsigned char*: string (not terminated)
488 */
489 vec[0].iov_base = (void*)&returned_errno;
490 vec[0].iov_len = sizeof(returned_errno);
491 vec[1].iov_base = buffer;
492 vec[1].iov_len = 1;
493
494 got = readv(sock, vec, 2);
41e4abd8
NC
495
496 if(got < 0) {
497 perror("Debug leaking scalars parent read failed");
808ad2d0 498 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
499 abort();
500 }
808ad2d0 501 if(got < sizeof(returned_errno) + 1) {
41e4abd8 502 perror("Debug leaking scalars parent short read");
808ad2d0 503 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
504 abort();
505 }
506
808ad2d0
NC
507 if (*buffer) {
508 got = read(sock, buffer + 1, *buffer);
509 if(got < 0) {
510 perror("Debug leaking scalars parent read 2 failed");
511 PerlIO_flush(PerlIO_stderr());
512 abort();
513 }
514
515 if(got < *buffer) {
516 perror("Debug leaking scalars parent short read 2");
517 PerlIO_flush(PerlIO_stderr());
518 abort();
519 }
520 }
521
522 if (returned_errno || *buffer) {
523 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
524 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
525 returned_errno, strerror(returned_errno));
41e4abd8
NC
526 }
527}
528#endif
529
62375a60 530/*
954c1994
GS
531=for apidoc perl_destruct
532
533Shuts down a Perl interpreter. See L<perlembed>.
534
535=cut
536*/
537
31d77e54 538int
0cb96387 539perl_destruct(pTHXx)
79072805 540{
27da23d5 541 dVAR;
8ea43dc8 542 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 543 HV *hv;
2aa47728 544#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
545 pid_t child;
546#endif
8990e307 547
ed6c66dd 548 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 549
7766f137
GS
550 /* wait for all pseudo-forked children to finish */
551 PERL_WAIT_FOR_CHILDREN;
552
3280af22 553 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
554#ifdef DEBUGGING
555 {
9d4ba2ae
AL
556 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
557 if (s) {
e1ec3a88 558 const int i = atoi(s);
5f05dabc
PP
559 if (destruct_level < i)
560 destruct_level = i;
561 }
4633a7c4
LW
562 }
563#endif
564
27da23d5 565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
566 dJMPENV;
567 int x = 0;
568
569 JMPENV_PUSH(x);
1b6737cc 570 PERL_UNUSED_VAR(x);
f3faeb53
AB
571 if (PL_endav && !PL_minus_c)
572 call_list(PL_scopestack_ix, PL_endav);
573 JMPENV_POP;
26f423df 574 }
f3faeb53 575 LEAVE;
a0d0e21e
LW
576 FREETMPS;
577
e00b64d4 578 /* Need to flush since END blocks can produce output */
f13a2bc0 579 my_fflush_all();
e00b64d4 580
62375a60
NIS
581 if (CALL_FPTR(PL_threadhook)(aTHX)) {
582 /* Threads hook has vetoed further cleanup */
37038d91 583 return STATUS_EXIT;
62375a60
NIS
584 }
585
2aa47728
NC
586#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
587 if (destruct_level != 0) {
588 /* Fork here to create a child. Our child's job is to preserve the
589 state of scalars prior to destruction, so that we can instruct it
590 to dump any scalars that we later find have leaked.
591 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 fail gracefully */
593 int fd[2];
594
595 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
596 perror("Debug leaking scalars socketpair failed");
597 abort();
598 }
599
600 child = fork();
601 if(child == -1) {
602 perror("Debug leaking scalars fork failed");
603 abort();
604 }
605 if (!child) {
606 /* We are the child */
3125a5a4
NC
607 const int sock = fd[1];
608 const int debug_fd = PerlIO_fileno(Perl_debug_log);
609 int f;
808ad2d0
NC
610 const char *where;
611 /* Our success message is an integer 0, and a char 0 */
612 static const char success[sizeof(int) + 1];
3125a5a4 613
2aa47728 614 close(fd[0]);
2aa47728 615
3125a5a4
NC
616 /* We need to close all other file descriptors otherwise we end up
617 with interesting hangs, where the parent closes its end of a
618 pipe, and sits waiting for (another) child to terminate. Only
619 that child never terminates, because it never gets EOF, because
bf357333
NC
620 we also have the far end of the pipe open. We even need to
621 close the debugging fd, because sometimes it happens to be one
622 end of a pipe, and a process is waiting on the other end for
623 EOF. Normally it would be closed at some point earlier in
624 destruction, but if we happen to cause the pipe to remain open,
625 EOF never occurs, and we get an infinite hang. Hence all the
626 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
627
628 f = sysconf(_SC_OPEN_MAX);
629 if(f < 0) {
808ad2d0
NC
630 where = "sysconf failed";
631 goto abort;
3125a5a4
NC
632 }
633 while (f--) {
634 if (f == sock)
635 continue;
3125a5a4
NC
636 close(f);
637 }
638
2aa47728
NC
639 while (1) {
640 SV *target;
bf357333
NC
641 union control_un control;
642 struct msghdr msg;
643 struct iovec vec[1];
644 struct cmsghdr *cmptr;
645 ssize_t got;
646 int got_fd;
647
648 msg.msg_control = control.control;
649 msg.msg_controllen = sizeof(control.control);
650 /* We're a connected socket so we don't need a source */
651 msg.msg_name = NULL;
652 msg.msg_namelen = 0;
653 msg.msg_iov = vec;
654 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
655
656 vec[0].iov_base = (void*)&target;
657 vec[0].iov_len = sizeof(target);
658
659 got = recvmsg(sock, &msg, 0);
2aa47728
NC
660
661 if(got == 0)
662 break;
663 if(got < 0) {
808ad2d0
NC
664 where = "recv failed";
665 goto abort;
2aa47728
NC
666 }
667 if(got < sizeof(target)) {
808ad2d0
NC
668 where = "short recv";
669 goto abort;
2aa47728 670 }
bf357333 671
808ad2d0
NC
672 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 where = "no cmsg";
674 goto abort;
675 }
676 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
677 where = "wrong cmsg_len";
678 goto abort;
679 }
680 if(cmptr->cmsg_level != SOL_SOCKET) {
681 where = "wrong cmsg_level";
682 goto abort;
683 }
684 if(cmptr->cmsg_type != SCM_RIGHTS) {
685 where = "wrong cmsg_type";
686 goto abort;
687 }
bf357333
NC
688
689 got_fd = *(int*)CMSG_DATA(cmptr);
690 /* For our last little bit of trickery, put the file descriptor
691 back into Perl_debug_log, as if we never actually closed it
692 */
808ad2d0
NC
693 if(got_fd != debug_fd) {
694 if (dup2(got_fd, debug_fd) == -1) {
695 where = "dup2";
696 goto abort;
697 }
698 }
2aa47728 699 sv_dump(target);
bf357333 700
2aa47728
NC
701 PerlIO_flush(Perl_debug_log);
702
808ad2d0 703 got = write(sock, &success, sizeof(success));
2aa47728
NC
704
705 if(got < 0) {
808ad2d0
NC
706 where = "write failed";
707 goto abort;
2aa47728 708 }
808ad2d0
NC
709 if(got < sizeof(success)) {
710 where = "short write";
711 goto abort;
2aa47728
NC
712 }
713 }
714 _exit(0);
808ad2d0
NC
715 abort:
716 {
717 int send_errno = errno;
718 unsigned char length = (unsigned char) strlen(where);
719 struct iovec failure[3] = {
720 {(void*)&send_errno, sizeof(send_errno)},
721 {&length, 1},
722 {(void*)where, length}
723 };
724 int got = writev(sock, failure, 3);
725 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
726 in the parent if we try to read from the socketpair after the
727 child has exited, even if there was data to read.
728 So sleep a bit to give the parent a fighting chance of
729 reading the data. */
730 sleep(2);
731 _exit((got == -1) ? errno : 0);
732 }
bf357333 733 /* End of child. */
2aa47728 734 }
41e4abd8 735 PL_dumper_fd = fd[0];
2aa47728
NC
736 close(fd[1]);
737 }
738#endif
739
ff0cee69
PP
740 /* We must account for everything. */
741
742 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
743 /* Do this now, because destroying ops can cause new SVs to be generated
744 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
745 PL_curcop to point to a valid op from which the filename structure
746 member is copied. */
747 PL_curcop = &PL_compiling;
3280af22 748 if (PL_main_root) {
4e380990
DM
749 /* ensure comppad/curpad to refer to main's pad */
750 if (CvPADLIST(PL_main_cv)) {
751 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
752 }
3280af22 753 op_free(PL_main_root);
5f66b61c 754 PL_main_root = NULL;
a0d0e21e 755 }
5f66b61c 756 PL_main_start = NULL;
3280af22 757 SvREFCNT_dec(PL_main_cv);
601f1833 758 PL_main_cv = NULL;
24d3c518 759 PL_dirty = TRUE;
ff0cee69 760
13621cfb
NIS
761 /* Tell PerlIO we are about to tear things apart in case
762 we have layers which are using resources that should
763 be cleaned up now.
764 */
765
766 PerlIO_destruct(aTHX);
767
3280af22 768 if (PL_sv_objcount) {
a0d0e21e
LW
769 /*
770 * Try to destruct global references. We do this first so that the
771 * destructors and destructees still exist. Some sv's might remain.
772 * Non-referenced objects are on their own.
773 */
a0d0e21e 774 sv_clean_objs();
bf9cdc68 775 PL_sv_objcount = 0;
a0de6cf5 776 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 777 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
a0d0e21e 795 if (destruct_level == 0){
8990e307 796
a0d0e21e 797 DEBUG_P(debprofdump());
ac27b0f5 798
56a2bab7
NIS
799#if defined(PERLIO_LAYERS)
800 /* No more IO - including error messages ! */
801 PerlIO_cleanup(aTHX);
802#endif
803
a0d0e21e 804 /* The exit() function will do everything that needs doing. */
37038d91 805 return STATUS_EXIT;
a0d0e21e 806 }
5dd60ef7 807
551a8b83 808 /* jettison our possibly duplicated environment */
4b647fb0
DM
809 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
810 * so we certainly shouldn't free it here
811 */
2f42fcb0 812#ifndef PERL_MICRO
4b647fb0 813#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 814 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
815#ifdef USE_ITHREADS
816 /* only main thread can free environ[0] contents */
817 && PL_curinterp == aTHX
818#endif
819 )
820 {
551a8b83
JH
821 I32 i;
822
823 for (i = 0; environ[i]; i++)
4b420006 824 safesysfree(environ[i]);
0631ea03 825
4b420006
JH
826 /* Must use safesysfree() when working with environ. */
827 safesysfree(environ);
551a8b83
JH
828
829 environ = PL_origenviron;
830 }
831#endif
2f42fcb0 832#endif /* !PERL_MICRO */
551a8b83 833
804ffa60 834 /* reset so print() ends up where we expect */
a0714e2c 835 setdefout(NULL);
804ffa60 836
5f8cb046
DM
837#ifdef USE_ITHREADS
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
842 */
843 {
844 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 845 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
846
847 while (i) {
c4420975 848 SV * const resv = ary[--i];
35061a7e
DM
849
850 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 851 /* this is PL_reg_curpm, already freed
35061a7e
DM
852 * flag is set in regexec.c:S_regtry
853 */
854 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 855 }
1cc8b4c5
AB
856 else if(SvREPADTMP(resv)) {
857 SvREPADTMP_off(resv);
858 }
a560f29b
NC
859 else if(SvIOKp(resv)) {
860 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
861 ReREFCNT_dec(re);
862 }
863 }
864 }
865 SvREFCNT_dec(PL_regex_padav);
7d49f689 866 PL_regex_padav = NULL;
5f8cb046
DM
867 PL_regex_pad = NULL;
868#endif
869
081fc587
AB
870 SvREFCNT_dec((SV*) PL_stashcache);
871 PL_stashcache = NULL;
872
5f05dabc
PP
873 /* loosen bonds of global variables */
874
3280af22
NIS
875 if(PL_rsfp) {
876 (void)PerlIO_close(PL_rsfp);
4608196e 877 PL_rsfp = NULL;
8ebc5c01
PP
878 }
879
880 /* Filters for program text */
3280af22 881 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 882 PL_rsfp_filters = NULL;
8ebc5c01 883
84386e14
RGS
884 if (PL_minus_F) {
885 Safefree(PL_splitstr);
886 PL_splitstr = NULL;
887 }
888
8ebc5c01 889 /* switches */
3280af22
NIS
890 PL_preprocess = FALSE;
891 PL_minus_n = FALSE;
892 PL_minus_p = FALSE;
893 PL_minus_l = FALSE;
894 PL_minus_a = FALSE;
895 PL_minus_F = FALSE;
896 PL_doswitches = FALSE;
599cee73 897 PL_dowarn = G_WARN_OFF;
3280af22
NIS
898 PL_doextract = FALSE;
899 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
900 PL_unsafe = FALSE;
901
902 Safefree(PL_inplace);
bd61b366 903 PL_inplace = NULL;
a7cb1f99 904 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
905
906 if (PL_e_script) {
907 SvREFCNT_dec(PL_e_script);
a0714e2c 908 PL_e_script = NULL;
8ebc5c01
PP
909 }
910
bf9cdc68
RG
911 PL_perldb = 0;
912
8ebc5c01
PP
913 /* magical thingies */
914
7889fe52 915 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 916 PL_ofs_sv = NULL;
5f05dabc 917
7889fe52 918 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 919 PL_ors_sv = NULL;
8ebc5c01 920
3280af22 921 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 922 PL_rs = NULL;
dc92893f 923
d33b2eba 924 Safefree(PL_osname); /* $^O */
bd61b366 925 PL_osname = NULL;
5f05dabc 926
3280af22 927 SvREFCNT_dec(PL_statname);
a0714e2c
SS
928 PL_statname = NULL;
929 PL_statgv = NULL;
5f05dabc 930
8ebc5c01
PP
931 /* defgv, aka *_ should be taken care of elsewhere */
932
8ebc5c01 933 /* clean up after study() */
3280af22 934 SvREFCNT_dec(PL_lastscream);
a0714e2c 935 PL_lastscream = NULL;
3280af22
NIS
936 Safefree(PL_screamfirst);
937 PL_screamfirst = 0;
938 Safefree(PL_screamnext);
939 PL_screamnext = 0;
8ebc5c01 940
7d5ea4e7
GS
941 /* float buffer */
942 Safefree(PL_efloatbuf);
bd61b366 943 PL_efloatbuf = NULL;
7d5ea4e7
GS
944 PL_efloatsize = 0;
945
8ebc5c01 946 /* startup and shutdown function lists */
3280af22 947 SvREFCNT_dec(PL_beginav);
5a837c8f 948 SvREFCNT_dec(PL_beginav_save);
3280af22 949 SvREFCNT_dec(PL_endav);
7d30b5c4 950 SvREFCNT_dec(PL_checkav);
ece599bd 951 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 954 SvREFCNT_dec(PL_initav);
7d49f689
NC
955 PL_beginav = NULL;
956 PL_beginav_save = NULL;
957 PL_endav = NULL;
958 PL_checkav = NULL;
959 PL_checkav_save = NULL;
3c10abe3
AG
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
7d49f689 962 PL_initav = NULL;
5618dfe8 963
8ebc5c01 964 /* shortcuts just get cleared */
a0714e2c
SS
965 PL_envgv = NULL;
966 PL_incgv = NULL;
967 PL_hintgv = NULL;
968 PL_errgv = NULL;
969 PL_argvgv = NULL;
970 PL_argvoutgv = NULL;
971 PL_stdingv = NULL;
972 PL_stderrgv = NULL;
973 PL_last_in_gv = NULL;
974 PL_replgv = NULL;
975 PL_DBgv = NULL;
976 PL_DBline = NULL;
977 PL_DBsub = NULL;
978 PL_DBsingle = NULL;
979 PL_DBtrace = NULL;
980 PL_DBsignal = NULL;
981 PL_DBassertion = NULL;
601f1833 982 PL_DBcv = NULL;
7d49f689 983 PL_dbargs = NULL;
5c284bb0 984 PL_debstash = NULL;
8ebc5c01 985
7a1c5554 986 SvREFCNT_dec(PL_argvout_stack);
7d49f689 987 PL_argvout_stack = NULL;
8ebc5c01 988
5c831c24 989 SvREFCNT_dec(PL_modglobal);
5c284bb0 990 PL_modglobal = NULL;
5c831c24 991 SvREFCNT_dec(PL_preambleav);
7d49f689 992 PL_preambleav = NULL;
5c831c24 993 SvREFCNT_dec(PL_subname);
a0714e2c 994 PL_subname = NULL;
5c831c24 995 SvREFCNT_dec(PL_linestr);
a0714e2c 996 PL_linestr = NULL;
ca0c25f6 997#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 998 SvREFCNT_dec(PL_pidstatus);
5c284bb0 999 PL_pidstatus = NULL;
ca0c25f6 1000#endif
5c831c24 1001 SvREFCNT_dec(PL_toptarget);
a0714e2c 1002 PL_toptarget = NULL;
5c831c24 1003 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1004 PL_bodytarget = NULL;
1005 PL_formtarget = NULL;
5c831c24 1006
d33b2eba 1007 /* free locale stuff */
b9582b6a 1008#ifdef USE_LOCALE_COLLATE
d33b2eba 1009 Safefree(PL_collation_name);
bd61b366 1010 PL_collation_name = NULL;
b9582b6a 1011#endif
d33b2eba 1012
b9582b6a 1013#ifdef USE_LOCALE_NUMERIC
d33b2eba 1014 Safefree(PL_numeric_name);
bd61b366 1015 PL_numeric_name = NULL;
a453c169 1016 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1017 PL_numeric_radix_sv = NULL;
b9582b6a 1018#endif
d33b2eba 1019
5c831c24
GS
1020 /* clear utf8 character classes */
1021 SvREFCNT_dec(PL_utf8_alnum);
1022 SvREFCNT_dec(PL_utf8_alnumc);
1023 SvREFCNT_dec(PL_utf8_ascii);
1024 SvREFCNT_dec(PL_utf8_alpha);
1025 SvREFCNT_dec(PL_utf8_space);
1026 SvREFCNT_dec(PL_utf8_cntrl);
1027 SvREFCNT_dec(PL_utf8_graph);
1028 SvREFCNT_dec(PL_utf8_digit);
1029 SvREFCNT_dec(PL_utf8_upper);
1030 SvREFCNT_dec(PL_utf8_lower);
1031 SvREFCNT_dec(PL_utf8_print);
1032 SvREFCNT_dec(PL_utf8_punct);
1033 SvREFCNT_dec(PL_utf8_xdigit);
1034 SvREFCNT_dec(PL_utf8_mark);
1035 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1036 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1037 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1038 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1039 SvREFCNT_dec(PL_utf8_idstart);
1040 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1041 PL_utf8_alnum = NULL;
1042 PL_utf8_alnumc = NULL;
1043 PL_utf8_ascii = NULL;
1044 PL_utf8_alpha = NULL;
1045 PL_utf8_space = NULL;
1046 PL_utf8_cntrl = NULL;
1047 PL_utf8_graph = NULL;
1048 PL_utf8_digit = NULL;
1049 PL_utf8_upper = NULL;
1050 PL_utf8_lower = NULL;
1051 PL_utf8_print = NULL;
1052 PL_utf8_punct = NULL;
1053 PL_utf8_xdigit = NULL;
1054 PL_utf8_mark = NULL;
1055 PL_utf8_toupper = NULL;
1056 PL_utf8_totitle = NULL;
1057 PL_utf8_tolower = NULL;
1058 PL_utf8_tofold = NULL;
1059 PL_utf8_idstart = NULL;
1060 PL_utf8_idcont = NULL;
5c831c24 1061
971a9dd3 1062 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1063 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1064 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1065 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1066 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1067 CopFILE_free(&PL_compiling);
1068 CopSTASH_free(&PL_compiling);
5c831c24 1069
a0d0e21e 1070 /* Prepare to destruct main symbol table. */
5f05dabc 1071
3280af22
NIS
1072 hv = PL_defstash;
1073 PL_defstash = 0;
a0d0e21e 1074 SvREFCNT_dec(hv);
5c831c24 1075 SvREFCNT_dec(PL_curstname);
a0714e2c 1076 PL_curstname = NULL;
a0d0e21e 1077
5a844595
GS
1078 /* clear queued errors */
1079 SvREFCNT_dec(PL_errors);
a0714e2c 1080 PL_errors = NULL;
5a844595 1081
a0d0e21e 1082 FREETMPS;
0453d815 1083 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1084 if (PL_scopestack_ix != 0)
9014280d 1085 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1087 (long)PL_scopestack_ix);
1088 if (PL_savestack_ix != 0)
9014280d 1089 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1090 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1091 (long)PL_savestack_ix);
1092 if (PL_tmps_floor != -1)
9014280d 1093 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1094 (long)PL_tmps_floor + 1);
a0d0e21e 1095 if (cxstack_ix != -1)
9014280d 1096 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1097 (long)cxstack_ix + 1);
a0d0e21e 1098 }
8990e307
LW
1099
1100 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1101 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1102 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1103
1104 /* the 2 is for PL_fdpid and PL_strtab */
1105 while (PL_sv_count > 2 && sv_clean_all())
1106 ;
1107
d33b2eba
GS
1108 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1109 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1110 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1111 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1112
d4777f27
GS
1113 AvREAL_off(PL_fdpid); /* no surviving entries */
1114 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1115 PL_fdpid = NULL;
d33b2eba 1116
6c644e78
GS
1117#ifdef HAVE_INTERP_INTERN
1118 sys_intern_clear();
1119#endif
1120
6e72f9df
PP
1121 /* Destruct the global string table. */
1122 {
1123 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1124 * so that sv_free() won't fail on them.
80459961
NC
1125 * Now that the global string table is using a single hunk of memory
1126 * for both HE and HEK, we either need to explicitly unshare it the
1127 * correct way, or actually free things here.
6e72f9df 1128 */
80459961
NC
1129 I32 riter = 0;
1130 const I32 max = HvMAX(PL_strtab);
c4420975 1131 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1132 HE *hent = array[0];
1133
6e72f9df 1134 for (;;) {
0453d815 1135 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1136 HE * const next = HeNEXT(hent);
9014280d 1137 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1138 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1139 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1140 Safefree(hent);
1141 hent = next;
6e72f9df
PP
1142 }
1143 if (!hent) {
1144 if (++riter > max)
1145 break;
1146 hent = array[riter];
1147 }
1148 }
80459961
NC
1149
1150 Safefree(array);
1151 HvARRAY(PL_strtab) = 0;
1152 HvTOTALKEYS(PL_strtab) = 0;
1153 HvFILL(PL_strtab) = 0;
6e72f9df 1154 }
3280af22 1155 SvREFCNT_dec(PL_strtab);
6e72f9df 1156
e652bb2f 1157#ifdef USE_ITHREADS
c21d1a0f 1158 /* free the pointer tables used for cloning */
a0739874 1159 ptr_table_free(PL_ptr_table);
bf9cdc68 1160 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1161#endif
a0739874 1162
d33b2eba
GS
1163 /* free special SVs */
1164
1165 SvREFCNT(&PL_sv_yes) = 0;
1166 sv_clear(&PL_sv_yes);
1167 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1168 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1169
1170 SvREFCNT(&PL_sv_no) = 0;
1171 sv_clear(&PL_sv_no);
1172 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1173 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1174
9f375a43
DM
1175 {
1176 int i;
1177 for (i=0; i<=2; i++) {
1178 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1179 sv_clear(PERL_DEBUG_PAD(i));
1180 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1181 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1182 }
1183 }
1184
0453d815 1185 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1186 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1187
eba0f806
DM
1188#ifdef DEBUG_LEAKING_SCALARS
1189 if (PL_sv_count != 0) {
1190 SV* sva;
1191 SV* sv;
1192 register SV* svend;
1193
1194 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1195 svend = &sva[SvREFCNT(sva)];
1196 for (sv = sva + 1; sv < svend; ++sv) {
1197 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1198 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1199 " flags=0x%"UVxf
fd0854ff
DM
1200 " refcnt=%"UVuf pTHX__FORMAT "\n"
1201 "\tallocated at %s:%d %s %s%s\n",
1202 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1203 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1204 sv->sv_debug_line,
1205 sv->sv_debug_inpad ? "for" : "by",
1206 sv->sv_debug_optype ?
1207 PL_op_name[sv->sv_debug_optype]: "(none)",
1208 sv->sv_debug_cloned ? " (cloned)" : ""
1209 );
2aa47728 1210#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1211 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1212#endif
eba0f806
DM
1213 }
1214 }
1215 }
1216 }
2aa47728
NC
1217#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1218 {
1219 int status;
1220 fd_set rset;
1221 /* Wait for up to 4 seconds for child to terminate.
1222 This seems to be the least effort way of timing out on reaping
1223 its exit status. */
1224 struct timeval waitfor = {4, 0};
41e4abd8 1225 int sock = PL_dumper_fd;
2aa47728
NC
1226
1227 shutdown(sock, 1);
1228 FD_ZERO(&rset);
1229 FD_SET(sock, &rset);
1230 select(sock + 1, &rset, NULL, NULL, &waitfor);
1231 waitpid(child, &status, WNOHANG);
1232 close(sock);
1233 }
1234#endif
eba0f806 1235#endif
bf9cdc68 1236 PL_sv_count = 0;
eba0f806
DM
1237
1238
56a2bab7 1239#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1240 /* No more IO - including error messages ! */
1241 PerlIO_cleanup(aTHX);
1242#endif
1243
9f4bd222 1244 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1245 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1246 for no arg - and will try and SvREFCNT_dec it.
1247 */
1248 SvREFCNT(&PL_sv_undef) = 0;
1249 SvREADONLY_off(&PL_sv_undef);
1250
3280af22 1251 Safefree(PL_origfilename);
bd61b366 1252 PL_origfilename = NULL;
3280af22 1253 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1254 PL_reg_start_tmp = (char**)NULL;
1255 PL_reg_start_tmpl = 0;
43c5f42d 1256 Safefree(PL_reg_curpm);
82ba1be6 1257 Safefree(PL_reg_poscache);
dd28f7bb 1258 free_tied_hv_pool();
3280af22 1259 Safefree(PL_op_mask);
cf36064f 1260 Safefree(PL_psig_ptr);
bf9cdc68 1261 PL_psig_ptr = (SV**)NULL;
cf36064f 1262 Safefree(PL_psig_name);
bf9cdc68 1263 PL_psig_name = (SV**)NULL;
2c2666fc 1264 Safefree(PL_bitcount);
bd61b366 1265 PL_bitcount = NULL;
ce08f86c 1266 Safefree(PL_psig_pend);
bf9cdc68 1267 PL_psig_pend = (int*)NULL;
a0714e2c 1268 PL_formfeed = NULL;
6e72f9df 1269 nuke_stacks();
bf9cdc68
RG
1270 PL_tainting = FALSE;
1271 PL_taint_warn = FALSE;
3280af22 1272 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1273 PL_debug = 0;
ac27b0f5 1274
a0d0e21e 1275 DEBUG_P(debprofdump());
d33b2eba 1276
e5dd39fc 1277#ifdef USE_REENTRANT_API
10bc17b6 1278 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1279#endif
1280
612f20c3
GS
1281 sv_free_arenas();
1282
5d9a96ca
DM
1283 while (PL_regmatch_slab) {
1284 regmatch_slab *s = PL_regmatch_slab;
1285 PL_regmatch_slab = PL_regmatch_slab->next;
1286 Safefree(s);
1287 }
1288
fc36a67e
PP
1289 /* As the absolutely last thing, free the non-arena SV for mess() */
1290
3280af22 1291 if (PL_mess_sv) {
f350b448
NC
1292 /* we know that type == SVt_PVMG */
1293
9c63abab 1294 /* it could have accumulated taint magic */
f350b448
NC
1295 MAGIC* mg;
1296 MAGIC* moremagic;
1297 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1298 moremagic = mg->mg_moremagic;
1299 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1300 && mg->mg_len >= 0)
1301 Safefree(mg->mg_ptr);
1302 Safefree(mg);
9c63abab 1303 }
f350b448 1304
fc36a67e 1305 /* we know that type >= SVt_PV */
8bd4d4c5 1306 SvPV_free(PL_mess_sv);
3280af22
NIS
1307 Safefree(SvANY(PL_mess_sv));
1308 Safefree(PL_mess_sv);
a0714e2c 1309 PL_mess_sv = NULL;
fc36a67e 1310 }
37038d91 1311 return STATUS_EXIT;
79072805
LW
1312}
1313
954c1994
GS
1314/*
1315=for apidoc perl_free
1316
1317Releases a Perl interpreter. See L<perlembed>.
1318
1319=cut
1320*/
1321
79072805 1322void
0cb96387 1323perl_free(pTHXx)
79072805 1324{
7cb608b5 1325#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1326 {
1327 /*
1328 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1329 * value as we're probably hunting memory leaks then
1330 */
1331 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1332 if (!s || atoi(s) == 0) {
1333 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1334 thread at thread exit. */
1335 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1336 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1337 }
1338 }
7cb608b5
NC
1339#endif
1340
acfe0abc 1341#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1342# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1343 {
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 void *host = nw_internal_host;
acfe0abc 1346# else
7af12a34 1347 void *host = w32_internal_host;
acfe0abc 1348# endif
7af12a34 1349 PerlMem_free(aTHXx);
acfe0abc 1350# ifdef NETWARE
7af12a34 1351 nw_delete_internal_host(host);
acfe0abc 1352# else
7af12a34 1353 win32_delete_internal_host(host);
acfe0abc 1354# endif
7af12a34 1355 }
1c0ca838
GS
1356# else
1357 PerlMem_free(aTHXx);
1358# endif
acfe0abc
GS
1359#else
1360 PerlMem_free(aTHXx);
76e3520e 1361#endif
79072805
LW
1362}
1363
b7f7fff6 1364#if defined(USE_ITHREADS)
aebd1ac7
GA
1365/* provide destructors to clean up the thread key when libperl is unloaded */
1366#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1367
826955bd 1368#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1369#pragma fini "perl_fini"
666ad1ec
GA
1370#elif defined(__sun) && !defined(__GNUC__)
1371#pragma fini (perl_fini)
aebd1ac7
GA
1372#endif
1373
0dbb1585
AL
1374static void
1375#if defined(__GNUC__)
1376__attribute__((destructor))
aebd1ac7 1377#endif
de009b76 1378perl_fini(void)
aebd1ac7 1379{
27da23d5 1380 dVAR;
aebd1ac7
GA
1381 if (PL_curinterp)
1382 FREE_THREAD_KEY;
1383}
1384
1385#endif /* WIN32 */
1386#endif /* THREADS */
1387
4b556e6c 1388void
864dbfa3 1389Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1390{
97aff369 1391 dVAR;
3280af22
NIS
1392 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1393 PL_exitlist[PL_exitlistlen].fn = fn;
1394 PL_exitlist[PL_exitlistlen].ptr = ptr;
1395 ++PL_exitlistlen;
4b556e6c
JD
1396}
1397
56cf6df8
RGS
1398#ifdef HAS_PROCSELFEXE
1399/* This is a function so that we don't hold on to MAXPATHLEN
1400 bytes of stack longer than necessary
1401 */
1402STATIC void
e1ec3a88 1403S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1404{
1405 char buf[MAXPATHLEN];
1406 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1407
1408 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1409 includes a spurious NUL which will cause $^X to fail in system
1410 or backticks (this will prevent extensions from being built and
1411 many tests from working). readlink is not meant to add a NUL.
1412 Normal readlink works fine.
1413 */
1414 if (len > 0 && buf[len-1] == '\0') {
1415 len--;
1416 }
1417
1418 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1419 returning the text "unknown" from the readlink rather than the path
1420 to the executable (or returning an error from the readlink). Any valid
1421 path has a '/' in it somewhere, so use that to validate the result.
1422 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1423 */
1424 if (len > 0 && memchr(buf, '/', len)) {
1425 sv_setpvn(sv,buf,len);
1426 }
1427 else {
1428 sv_setpv(sv,arg0);
1429 }
1430}
1431#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1432
1433STATIC void
1434S_set_caret_X(pTHX) {
97aff369 1435 dVAR;
fafc274c 1436 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1437 if (tmpgv) {
1438#ifdef HAS_PROCSELFEXE
1439 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1440#else
1441#ifdef OS2
c69033f2 1442 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1443#else
c69033f2 1444 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1445#endif
1446#endif
1447 }
1448}
1449
954c1994
GS
1450/*
1451=for apidoc perl_parse
1452
1453Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1454
1455=cut
1456*/
1457
79072805 1458int
0cb96387 1459perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1460{
27da23d5 1461 dVAR;
6224f72b 1462 I32 oldscope;
6224f72b 1463 int ret;
db36c5a1 1464 dJMPENV;
8d063cd8 1465
ed6c66dd 1466 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1467
a687059c
LW
1468#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1469#ifdef IAMSUID
1470#undef IAMSUID
cea2e8a9 1471 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1472setuid perl scripts securely.\n");
ae3f3efd 1473#endif /* IAMSUID */
a687059c
LW
1474#endif
1475
b0891165
JH
1476#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1477 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1478 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1479 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1480 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1481 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1482 if (!PL_rehash_seed_set)
1483 PL_rehash_seed = get_hash_seed();
b0891165 1484 {
9d4ba2ae 1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1486
1b6737cc
AL
1487 if (s && (atoi(s) == 1))
1488 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1489 }
1490#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1491
3280af22 1492 PL_origargc = argc;
e2975953 1493 PL_origargv = argv;
a0d0e21e 1494
a2722ac9
GA
1495 if (PL_origalen != 0) {
1496 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1497 }
1498 else {
3cb9023d
JH
1499 /* Set PL_origalen be the sum of the contiguous argv[]
1500 * elements plus the size of the env in case that it is
e9137a8e 1501 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1502 * as the maximum modifiable length of $0. In the worst case
1503 * the area we are able to modify is limited to the size of
43c32782 1504 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1505 * --jhi */
e1ec3a88 1506 const char *s = NULL;
54bfe034 1507 int i;
1b6737cc 1508 const UV mask =
7d8e7db3 1509 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1510 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1511 const UV aligned =
43c32782
JH
1512 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1513
1514 /* See if all the arguments are contiguous in memory. Note
1515 * that 'contiguous' is a loose term because some platforms
1516 * align the argv[] and the envp[]. If the arguments look
1517 * like non-aligned, assume that they are 'strictly' or
1518 * 'traditionally' contiguous. If the arguments look like
1519 * aligned, we just check that they are within aligned
1520 * PTRSIZE bytes. As long as no system has something bizarre
1521 * like the argv[] interleaved with some other data, we are
1522 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1523 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1524 while (*s) s++;
1525 for (i = 1; i < PL_origargc; i++) {
1526 if ((PL_origargv[i] == s + 1
43c32782 1527#ifdef OS2
c8941eeb 1528 || PL_origargv[i] == s + 2
43c32782 1529#endif
c8941eeb
JH
1530 )
1531 ||
1532 (aligned &&
1533 (PL_origargv[i] > s &&
1534 PL_origargv[i] <=
1535 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1536 )
1537 {
1538 s = PL_origargv[i];
1539 while (*s) s++;
1540 }
1541 else
1542 break;
54bfe034 1543 }
54bfe034 1544 }
3cb9023d 1545 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1546 if (s && PL_origenviron) {
43c32782
JH
1547 if ((PL_origenviron[0] == s + 1
1548#ifdef OS2
1549 || (PL_origenviron[0] == s + 9 && (s += 8))
1550#endif
1551 )
1552 ||
1553 (aligned &&
1554 (PL_origenviron[0] > s &&
1555 PL_origenviron[0] <=
1556 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1557 )
1558 {
1559#ifndef OS2
1560 s = PL_origenviron[0];
1561 while (*s) s++;
1562#endif
bd61b366 1563 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1564 /* Force copy of environment. */
1565 for (i = 1; PL_origenviron[i]; i++) {
1566 if (PL_origenviron[i] == s + 1
1567 ||
1568 (aligned &&
1569 (PL_origenviron[i] > s &&
1570 PL_origenviron[i] <=
1571 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1572 )
1573 {
1574 s = PL_origenviron[i];
1575 while (*s) s++;
1576 }
1577 else
1578 break;
54bfe034 1579 }
43c32782 1580 }
54bfe034 1581 }
2d2af554 1582 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1583 }
1584
3280af22 1585 if (PL_do_undump) {
a0d0e21e
LW
1586
1587 /* Come here if running an undumped a.out. */
1588
3280af22
NIS
1589 PL_origfilename = savepv(argv[0]);
1590 PL_do_undump = FALSE;
a0d0e21e 1591 cxstack_ix = -1; /* start label stack again */
748a9306 1592 init_ids();
b7975bdd
NC
1593 assert (!PL_tainted);
1594 TAINT;
1595 S_set_caret_X(aTHX);
1596 TAINT_NOT;
a0d0e21e
LW
1597 init_postdump_symbols(argc,argv,env);
1598 return 0;
1599 }
1600
3280af22 1601 if (PL_main_root) {
3280af22 1602 op_free(PL_main_root);
5f66b61c 1603 PL_main_root = NULL;
ff0cee69 1604 }
5f66b61c 1605 PL_main_start = NULL;
3280af22 1606 SvREFCNT_dec(PL_main_cv);
601f1833 1607 PL_main_cv = NULL;
79072805 1608
3280af22
NIS
1609 time(&PL_basetime);
1610 oldscope = PL_scopestack_ix;
599cee73 1611 PL_dowarn = G_WARN_OFF;
f86702cc 1612
14dd3ad8 1613 JMPENV_PUSH(ret);
6224f72b 1614 switch (ret) {
312caa8e 1615 case 0:
14dd3ad8 1616 parse_body(env,xsinit);
3c10abe3
AG
1617 if (PL_unitcheckav)
1618 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1619 if (PL_checkav)
1620 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1621 ret = 0;
1622 break;
6224f72b
GS
1623 case 1:
1624 STATUS_ALL_FAILURE;
1625 /* FALL THROUGH */
1626 case 2:
1627 /* my_exit() was called */
3280af22 1628 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1629 LEAVE;
1630 FREETMPS;
3280af22 1631 PL_curstash = PL_defstash;
3c10abe3
AG
1632 if (PL_unitcheckav)
1633 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1634 if (PL_checkav)
1635 call_list(oldscope, PL_checkav);
37038d91 1636 ret = STATUS_EXIT;
14dd3ad8 1637 break;
6224f72b 1638 case 3:
bf49b057 1639 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1640 ret = 1;
1641 break;
6224f72b 1642 }
14dd3ad8
GS
1643 JMPENV_POP;
1644 return ret;
1645}
1646
312caa8e 1647STATIC void *
14dd3ad8 1648S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1649{
27da23d5 1650 dVAR;
312caa8e 1651 int argc = PL_origargc;
8f42b153 1652 char **argv = PL_origargv;
e1ec3a88 1653 const char *scriptname = NULL;
312caa8e 1654 VOL bool dosearch = FALSE;
e1ec3a88 1655 const char *validarg = "";
312caa8e 1656 register SV *sv;
47f56822 1657 register char *s, c;
bd61b366 1658 const char *cddir = NULL;
ab019eaa 1659#ifdef USE_SITECUSTOMIZE
20ef40cf 1660 bool minus_f = FALSE;
ab019eaa 1661#endif
312caa8e 1662
3280af22 1663 sv_setpvn(PL_linestr,"",0);
396482e1 1664 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1665 SAVEFREESV(sv);
1666 init_main_stash();
54310121 1667
6224f72b
GS
1668 for (argc--,argv++; argc > 0; argc--,argv++) {
1669 if (argv[0][0] != '-' || !argv[0][1])
1670 break;
1671#ifdef DOSUID
1672 if (*validarg)
1673 validarg = " PHOOEY ";
1674 else
1675 validarg = argv[0];
ae3f3efd
PS
1676 /*
1677 * Can we rely on the kernel to start scripts with argv[1] set to
1678 * contain all #! line switches (the whole line)? (argv[0] is set to
1679 * the interpreter name, argv[2] to the script name; argv[3] and
1680 * above may contain other arguments.)
1681 */
13281fa4 1682#endif
6224f72b
GS
1683 s = argv[0]+1;
1684 reswitch:
47f56822 1685 switch ((c = *s)) {
729a02f2 1686 case 'C':
1d5472a9
GS
1687#ifndef PERL_STRICT_CR
1688 case '\r':
1689#endif
6224f72b
GS
1690 case ' ':
1691 case '0':
1692 case 'F':
1693 case 'a':
1694 case 'c':
1695 case 'd':
1696 case 'D':
1697 case 'h':
1698 case 'i':
1699 case 'l':
1700 case 'M':
1701 case 'm':
1702 case 'n':
1703 case 'p':
1704 case 's':
1705 case 'u':
1706 case 'U':
1707 case 'v':
599cee73
PM
1708 case 'W':
1709 case 'X':
6224f72b 1710 case 'w':
06492da6 1711 case 'A':
97bd5664 1712 if ((s = moreswitches(s)))
6224f72b
GS
1713 goto reswitch;
1714 break;
33b78306 1715
1dbad523 1716 case 't':
22f7c9c9 1717 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1718 if( !PL_tainting ) {
1719 PL_taint_warn = TRUE;
1720 PL_tainting = TRUE;
1721 }
1722 s++;
1723 goto reswitch;
6224f72b 1724 case 'T':
22f7c9c9 1725 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1726 PL_tainting = TRUE;
317ea90d 1727 PL_taint_warn = FALSE;
6224f72b
GS
1728 s++;
1729 goto reswitch;
f86702cc 1730
bc9b29db
RH
1731 case 'E':
1732 PL_minus_E = TRUE;
1733 /* FALL THROUGH */
6224f72b 1734 case 'e':
bf4acbe4
GS
1735#ifdef MACOS_TRADITIONAL
1736 /* ignore -e for Dev:Pseudo argument */
1737 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1738 break;
bf4acbe4 1739#endif
a52eba0e 1740 forbid_setid('e', -1);
3280af22 1741 if (!PL_e_script) {
396482e1 1742 PL_e_script = newSVpvs("");
0cb96387 1743 filter_add(read_e_script, NULL);
6224f72b
GS
1744 }
1745 if (*++s)
3280af22 1746 sv_catpv(PL_e_script, s);
6224f72b 1747 else if (argv[1]) {
3280af22 1748 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1749 argc--,argv++;
1750 }
1751 else
47f56822 1752 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1753 sv_catpvs(PL_e_script, "\n");
6224f72b 1754 break;
afe37c7d 1755
20ef40cf 1756 case 'f':
f5542d3a 1757#ifdef USE_SITECUSTOMIZE
20ef40cf 1758 minus_f = TRUE;
f5542d3a 1759#endif
20ef40cf
GA
1760 s++;
1761 goto reswitch;
1762
6224f72b 1763 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1764 forbid_setid('I', -1);
bd61b366 1765 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1766 argc--,argv++;
1767 }
6224f72b 1768 if (s && *s) {
0df16ed7 1769 STRLEN len = strlen(s);
aec46f14 1770 const char * const p = savepvn(s, len);
88fe16b2 1771 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1772 sv_catpvs(sv, "-I");
0df16ed7 1773 sv_catpvn(sv, p, len);
396482e1 1774 sv_catpvs(sv, " ");
6224f72b 1775 Safefree(p);
0df16ed7
GS
1776 }
1777 else
a67e862a 1778 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1779 break;
1780 case 'P':
a52eba0e 1781 forbid_setid('P', -1);
3280af22 1782 PL_preprocess = TRUE;
6224f72b
GS
1783 s++;
1784 goto reswitch;
1785 case 'S':
a52eba0e 1786 forbid_setid('S', -1);
6224f72b
GS
1787 dosearch = TRUE;
1788 s++;
1789 goto reswitch;
1790 case 'V':
7edfd0ef
NC
1791 {
1792 SV *opts_prog;
1793
1794 if (!PL_preambleav)
1795 PL_preambleav = newAV();
1796 av_push(PL_preambleav,
396482e1 1797 newSVpvs("use Config;"));
7edfd0ef
NC
1798 if (*++s != ':') {
1799 STRLEN opts;
1800
396482e1 1801 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1802#ifdef VMS
396482e1 1803 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1804#else
396482e1 1805 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1806#endif
7edfd0ef 1807 opts = SvCUR(opts_prog);
efcaa95b 1808
9cd7d3f2 1809 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1810# ifdef DEBUGGING
e2e4dbf1 1811 " DEBUGGING"
6224f72b 1812# endif
4f185743
NC
1813# ifdef DEBUG_LEAKING_SCALARS
1814 " DEBUG_LEAKING_SCALARS"
1815# endif
85e1fcb9 1816# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1817 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1818# endif
1819# ifdef FAKE_THREADS
e2e4dbf1 1820 " FAKE_THREADS"
85e1fcb9 1821# endif
6224f72b 1822# ifdef MULTIPLICITY
e2e4dbf1 1823 " MULTIPLICITY"
6224f72b 1824# endif
85e1fcb9 1825# ifdef MYMALLOC
e2e4dbf1 1826 " MYMALLOC"
85e1fcb9 1827# endif
3bcf5ed8
SP
1828# ifdef NO_MATHOMS
1829 " NO_MATHOMS"
1830# endif
85e1fcb9 1831# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1832 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1833# endif
1834# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1835 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1836# endif
1837# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1838 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1839# endif
1840# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1841 " PERL_IMPLICIT_SYS"
85e1fcb9 1842# endif
a724edfe
NC
1843# ifdef PERL_MAD
1844 " PERL_MAD"
1845# endif
85e1fcb9 1846# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1847 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1848# endif
1849# ifdef PERL_NEED_APPCTX
e2e4dbf1 1850 " PERL_NEED_APPCTX"
85e1fcb9
SH
1851# endif
1852# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1853 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1854# endif
1855# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1856 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1857# endif
9c0a4d5d
DM
1858# ifdef PERL_TRACK_MEMPOOL
1859 " PERL_TRACK_MEMPOOL"
1860# endif
417cd4a8
SP
1861# ifdef PERL_USE_SAFE_PUTENV
1862 " PERL_USE_SAFE_PUTENV"
1863# endif
ca0c25f6
NC
1864#ifdef PERL_USES_PL_PIDSTATUS
1865 " PERL_USES_PL_PIDSTATUS"
1866#endif
85e1fcb9 1867# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1868 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1869# endif
1870# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1871 " THREADS_HAVE_PIDS"
85e1fcb9 1872# endif
85e1fcb9 1873# ifdef USE_64_BIT_ALL
e2e4dbf1 1874 " USE_64_BIT_ALL"
ac5e8965 1875# endif
10cc9d2a 1876# ifdef USE_64_BIT_INT
e2e4dbf1 1877 " USE_64_BIT_INT"
10cc9d2a 1878# endif
85e1fcb9 1879# ifdef USE_ITHREADS
e2e4dbf1 1880 " USE_ITHREADS"
85e1fcb9
SH
1881# endif
1882# ifdef USE_LARGE_FILES
e2e4dbf1 1883 " USE_LARGE_FILES"
ac5e8965
JH
1884# endif
1885# ifdef USE_LONG_DOUBLE
e2e4dbf1 1886 " USE_LONG_DOUBLE"
ac5e8965 1887# endif
85e1fcb9 1888# ifdef USE_PERLIO
e2e4dbf1 1889 " USE_PERLIO"
53430762 1890# endif
85e1fcb9 1891# ifdef USE_REENTRANT_API
e2e4dbf1 1892 " USE_REENTRANT_API"
85e1fcb9
SH
1893# endif
1894# ifdef USE_SFIO
e2e4dbf1 1895 " USE_SFIO"
ac5e8965 1896# endif
20ef40cf 1897# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1898 " USE_SITECUSTOMIZE"
20ef40cf 1899# endif
85e1fcb9 1900# ifdef USE_SOCKS
e2e4dbf1 1901 " USE_SOCKS"
b363f7ed 1902# endif
e2e4dbf1 1903 );
efcaa95b 1904
7edfd0ef
NC
1905 while (SvCUR(opts_prog) > opts+76) {
1906 /* find last space after "options: " and before col 76
1907 */
efcaa95b 1908
7edfd0ef 1909 const char *space;
c4420975 1910 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1911 const char c = pv[opts+76];
1912 pv[opts+76] = '\0';
1913 space = strrchr(pv+opts+26, ' ');
1914 pv[opts+76] = c;
1915 if (!space) break; /* "Can't happen" */
efcaa95b 1916
7edfd0ef 1917 /* break the line before that space */
efcaa95b 1918
7edfd0ef 1919 opts = space - pv;
89529cee 1920 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1921 STR_WITH_LEN("\\n "));
7edfd0ef 1922 }
efcaa95b 1923
396482e1 1924 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1925
6224f72b 1926#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1927 if (LOCAL_PATCH_COUNT > 0) {
1928 int i;
396482e1 1929 sv_catpvs(opts_prog,
7edfd0ef
NC
1930 "\" Locally applied patches:\\n\",");
1931 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1932 if (PL_localpatches[i])
1933 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1934 0, PL_localpatches[i], 0);
1935 }
6224f72b 1936 }
6224f72b 1937#endif
7edfd0ef
NC
1938 Perl_sv_catpvf(aTHX_ opts_prog,
1939 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1940#ifdef __DATE__
1941# ifdef __TIME__
7edfd0ef
NC
1942 Perl_sv_catpvf(aTHX_ opts_prog,
1943 ",\" Compiled at %s %s\\n\"",__DATE__,
1944 __TIME__);
6224f72b 1945# else
7edfd0ef
NC
1946 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1947 __DATE__);
6224f72b
GS
1948# endif
1949#endif
396482e1 1950 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1951 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1952 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1953#ifdef __CYGWIN__
396482e1 1954 sv_catpvs(opts_prog,
7edfd0ef 1955 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1956#endif
396482e1 1957 sv_catpvs(opts_prog,
7edfd0ef
NC
1958 "print \" \\%ENV:\\n @env\\n\" if @env;"
1959 "print \" \\@INC:\\n @INC\\n\";");
1960 }
1961 else {
1962 ++s;
1963 opts_prog = Perl_newSVpvf(aTHX_
1964 "Config::config_vars(qw%c%s%c)",
1965 0, s, 0);
1966 s += strlen(s);
1967 }
1968 av_push(PL_preambleav, opts_prog);
1969 /* don't look for script or read stdin */
1970 scriptname = BIT_BUCKET;
1971 goto reswitch;
6224f72b 1972 }
6224f72b 1973 case 'x':
3280af22 1974 PL_doextract = TRUE;
6224f72b
GS
1975 s++;
1976 if (*s)
f4c556ac 1977 cddir = s;
6224f72b
GS
1978 break;
1979 case 0:
1980 break;
1981 case '-':
1982 if (!*++s || isSPACE(*s)) {
1983 argc--,argv++;
1984 goto switch_end;
1985 }
1986 /* catch use of gnu style long options */
1987 if (strEQ(s, "version")) {
dd374669 1988 s = (char *)"v";
6224f72b
GS
1989 goto reswitch;
1990 }
1991 if (strEQ(s, "help")) {
dd374669 1992 s = (char *)"h";
6224f72b
GS
1993 goto reswitch;
1994 }
1995 s--;
1996 /* FALL THROUGH */
1997 default:
cea2e8a9 1998 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1999 }
2000 }
6224f72b 2001 switch_end:
54310121 2002
f675dbe5
CB
2003 if (
2004#ifndef SECURE_INTERNAL_GETENV
2005 !PL_tainting &&
2006#endif
cf756827 2007 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2008 {
e1ec3a88 2009 const char *popt = s;
74288ac8
GS
2010 while (isSPACE(*s))
2011 s++;
317ea90d 2012 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2013 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2014 PL_tainting = TRUE;
317ea90d
MS
2015 PL_taint_warn = FALSE;
2016 }
74288ac8 2017 else {
bd61b366 2018 char *popt_copy = NULL;
74288ac8 2019 while (s && *s) {
4ea8f8fb 2020 char *d;
74288ac8
GS
2021 while (isSPACE(*s))
2022 s++;
2023 if (*s == '-') {
2024 s++;
2025 if (isSPACE(*s))
2026 continue;
2027 }
4ea8f8fb 2028 d = s;
74288ac8
GS
2029 if (!*s)
2030 break;
e4af53b0 2031 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2032 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2033 while (++s && *s) {
2034 if (isSPACE(*s)) {
cf756827
GS
2035 if (!popt_copy) {
2036 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2037 s = popt_copy + (s - popt);
2038 d = popt_copy + (d - popt);
2039 }
4ea8f8fb
MS
2040 *s++ = '\0';
2041 break;
2042 }
2043 }
1c4db469 2044 if (*d == 't') {
317ea90d
MS
2045 if( !PL_tainting ) {
2046 PL_taint_warn = TRUE;
2047 PL_tainting = TRUE;
2048 }
1c4db469 2049 } else {
97bd5664 2050 moreswitches(d);
1c4db469 2051 }
6224f72b 2052 }
6224f72b
GS
2053 }
2054 }
a0d0e21e 2055
20ef40cf
GA
2056#ifdef USE_SITECUSTOMIZE
2057 if (!minus_f) {
2058 if (!PL_preambleav)
2059 PL_preambleav = newAV();
2060 av_unshift(PL_preambleav, 1);
2061 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2062 }
2063#endif
2064
317ea90d 2065 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
72dc9ed5 2066 PL_compiling.cop_warnings
8ee4cf24 2067 = Perl_new_warnings_bitfield(aTHX_ NULL, WARN_TAINTstring, WARNsize);
317ea90d
MS
2068 }
2069
6224f72b
GS
2070 if (!scriptname)
2071 scriptname = argv[0];
3280af22 2072 if (PL_e_script) {
6224f72b
GS
2073 argc++,argv--;
2074 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2075 }
bd61b366 2076 else if (scriptname == NULL) {
6224f72b
GS
2077#ifdef MSDOS
2078 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2079 moreswitches("h");
6224f72b
GS
2080#endif
2081 scriptname = "-";
2082 }
2083
b7975bdd
NC
2084 /* Set $^X early so that it can be used for relocatable paths in @INC */
2085 assert (!PL_tainted);
2086 TAINT;
2087 S_set_caret_X(aTHX);
2088 TAINT_NOT;
6224f72b
GS
2089 init_perllib();
2090
a52eba0e
NC
2091 {
2092 int suidscript;
2093 const int fdscript
2094 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2095
a52eba0e 2096 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2097
64ca3a65 2098#ifndef PERL_MICRO
a52eba0e
NC
2099# if defined(SIGCHLD) || defined(SIGCLD)
2100 {
2101# ifndef SIGCHLD
2102# define SIGCHLD SIGCLD
2103# endif
2104 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2105 if (sigstate == (Sighandler_t) SIG_IGN) {
2106 if (ckWARN(WARN_SIGNAL))
2107 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2108 "Can't ignore signal CHLD, forcing to default");
2109 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2110 }
0b5b802d 2111 }
a52eba0e 2112# endif
64ca3a65 2113#endif
0b5b802d 2114
a52eba0e 2115 if (PL_doextract
bf4acbe4 2116#ifdef MACOS_TRADITIONAL
a52eba0e 2117 || gMacPerl_AlwaysExtract
bf4acbe4 2118#endif
a52eba0e 2119 ) {
faef540c
NC
2120
2121 /* This will croak if suidscript is >= 0, as -x cannot be used with
2122 setuid scripts. */
2123 forbid_setid('x', suidscript);
2124 /* Hence you can't get here if suidscript >= 0 */
2125
2126 find_beginning();
a52eba0e
NC
2127 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2128 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2129 }
f4c556ac 2130 }
6224f72b 2131
561b68a9 2132 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2133 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2134 CvUNIQUE_on(PL_compcv);
2135
dd2155a4 2136 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2137
0c4f7ff0 2138 boot_core_PerlIO();
6224f72b 2139 boot_core_UNIVERSAL();
09bef843 2140 boot_core_xsutils();
6224f72b
GS
2141
2142 if (xsinit)
acfe0abc 2143 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2144#ifndef PERL_MICRO
d0d72822 2145#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2146 init_os_extras();
6224f72b 2147#endif
64ca3a65 2148#endif
6224f72b 2149
29209bc5 2150#ifdef USE_SOCKS
1b9c9cf5
DH
2151# ifdef HAS_SOCKS5_INIT
2152 socks5_init(argv[0]);
2153# else
29209bc5 2154 SOCKSinit(argv[0]);
1b9c9cf5 2155# endif
ac27b0f5 2156#endif
29209bc5 2157
6224f72b
GS
2158 init_predump_symbols();
2159 /* init_postdump_symbols not currently designed to be called */
2160 /* more than once (ENV isn't cleared first, for example) */
2161 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2162 if (!PL_do_undump)
6224f72b
GS
2163 init_postdump_symbols(argc,argv,env);
2164
27da23d5
JH
2165 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2166 * or explicitly in some platforms.
085a54d9 2167 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2168 * look like the user wants to use UTF-8. */
a0fd4948 2169#if defined(__SYMBIAN32__)
27da23d5
JH
2170 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2171#endif
06e66572
JH
2172 if (PL_unicode) {
2173 /* Requires init_predump_symbols(). */
a05d7ebb 2174 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2175 IO* io;
2176 PerlIO* fp;
2177 SV* sv;
2178
a05d7ebb 2179 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2180 * and the default open disciplines. */
a05d7ebb
JH
2181 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2182 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2183 (fp = IoIFP(io)))
2184 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2185 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2186 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2187 (fp = IoOFP(io)))
2188 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2189 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2190 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2191 (fp = IoOFP(io)))
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2194 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2195 SVt_PV)))) {
a05d7ebb
JH
2196 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2197 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2198 if (in) {
2199 if (out)
2200 sv_setpvn(sv, ":utf8\0:utf8", 11);
2201 else
2202 sv_setpvn(sv, ":utf8\0", 6);
2203 }
2204 else if (out)
2205 sv_setpvn(sv, "\0:utf8", 6);
2206 SvSETMAGIC(sv);
2207 }
b310b053
JH
2208 }
2209 }
2210
4ffa73a3
JH
2211 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2212 if (strEQ(s, "unsafe"))
2213 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2214 else if (strEQ(s, "safe"))
2215 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2216 else
2217 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2218 }
2219
81d86705
NC
2220#ifdef PERL_MAD
2221 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2222 PL_madskills = 1;
2223 PL_minus_c = 1;
2224 if (!s || !s[0])
2225 PL_xmlfp = PerlIO_stdout();
2226 else {
2227 PL_xmlfp = PerlIO_open(s, "w");
2228 if (!PL_xmlfp)
2229 Perl_croak(aTHX_ "Can't open %s", s);
2230 }
2231 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2232 }
2233 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2234 PL_madskills = atoi(s);
2235 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2236 }
2237#endif
2238
6224f72b
GS
2239 init_lexer();
2240
2241 /* now parse the script */
2242
93189314 2243 SETERRNO(0,SS_NORMAL);
3280af22 2244 PL_error_count = 0;
bf4acbe4
GS
2245#ifdef MACOS_TRADITIONAL
2246 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2247 if (PL_minus_c)
2248 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2249 else {
2250 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2251 MacPerl_MPWFileName(PL_origfilename));
2252 }
2253 }
2254#else
3280af22
NIS
2255 if (yyparse() || PL_error_count) {
2256 if (PL_minus_c)
cea2e8a9 2257 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2258 else {
cea2e8a9 2259 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2260 PL_origfilename);
6224f72b
GS
2261 }
2262 }
bf4acbe4 2263#endif
57843af0 2264 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2265 PL_curstash = PL_defstash;
2266 PL_preprocess = FALSE;
2267 if (PL_e_script) {
2268 SvREFCNT_dec(PL_e_script);
a0714e2c 2269 PL_e_script = NULL;
6224f72b
GS
2270 }
2271
3280af22 2272 if (PL_do_undump)
6224f72b
GS
2273 my_unexec();
2274
57843af0
GS
2275 if (isWARN_ONCE) {
2276 SAVECOPFILE(PL_curcop);
2277 SAVECOPLINE(PL_curcop);
3280af22 2278 gv_check(PL_defstash);
57843af0 2279 }
6224f72b
GS
2280
2281 LEAVE;
2282 FREETMPS;
2283
2284#ifdef MYMALLOC
2285 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2286 dump_mstats("after compilation:");
2287#endif
2288
2289 ENTER;
3280af22 2290 PL_restartop = 0;
312caa8e 2291 return NULL;
6224f72b
GS
2292}
2293
954c1994
GS
2294/*
2295=for apidoc perl_run
2296
2297Tells a Perl interpreter to run. See L<perlembed>.
2298
2299=cut
2300*/
2301
6224f72b 2302int
0cb96387 2303perl_run(pTHXx)
6224f72b 2304{
97aff369 2305 dVAR;
6224f72b 2306 I32 oldscope;
14dd3ad8 2307 int ret = 0;
db36c5a1 2308 dJMPENV;
6224f72b 2309
ed6c66dd 2310 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2311
3280af22 2312 oldscope = PL_scopestack_ix;
96e176bf
CL
2313#ifdef VMS
2314 VMSISH_HUSHED = 0;
2315#endif
6224f72b 2316
14dd3ad8 2317 JMPENV_PUSH(ret);
6224f72b
GS
2318 switch (ret) {
2319 case 1:
2320 cxstack_ix = -1; /* start context stack again */
312caa8e 2321 goto redo_body;
14dd3ad8 2322 case 0: /* normal completion */
14dd3ad8
GS
2323 redo_body:
2324 run_body(oldscope);
14dd3ad8
GS
2325 /* FALL THROUGH */
2326 case 2: /* my_exit() */
3280af22 2327 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2328 LEAVE;
2329 FREETMPS;
3280af22 2330 PL_curstash = PL_defstash;
3a1ee7e8 2331 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2332 PL_endav && !PL_minus_c)
2333 call_list(oldscope, PL_endav);
6224f72b
GS
2334#ifdef MYMALLOC
2335 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2336 dump_mstats("after execution: ");
2337#endif
37038d91 2338 ret = STATUS_EXIT;
14dd3ad8 2339 break;
6224f72b 2340 case 3:
312caa8e
CS
2341 if (PL_restartop) {
2342 POPSTACK_TO(PL_mainstack);
2343 goto redo_body;
6224f72b 2344 }
bf49b057 2345 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2346 FREETMPS;
14dd3ad8
GS
2347 ret = 1;
2348 break;
6224f72b
GS
2349 }
2350
14dd3ad8
GS
2351 JMPENV_POP;
2352 return ret;
312caa8e
CS
2353}
2354
14dd3ad8 2355
dd374669 2356STATIC void
14dd3ad8
GS
2357S_run_body(pTHX_ I32 oldscope)
2358{
97aff369 2359 dVAR;
6224f72b 2360 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2361 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2362
3280af22 2363 if (!PL_restartop) {
81d86705
NC
2364#ifdef PERL_MAD
2365 if (PL_xmlfp) {
2366 xmldump_all();
2367 exit(0); /* less likely to core dump than my_exit(0) */
2368 }
2369#endif
6224f72b 2370 DEBUG_x(dump_all());
cf2782cd 2371#ifdef DEBUGGING
ecae49c0
NC
2372 if (!DEBUG_q_TEST)
2373 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2374#endif
b900a521
JH
2375 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2376 PTR2UV(thr)));
6224f72b 2377
3280af22 2378 if (PL_minus_c) {
bf4acbe4 2379#ifdef MACOS_TRADITIONAL
e69a2255
JH
2380 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2381 (gMacPerl_ErrorFormat ? "# " : ""),
2382 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2383#else
bf49b057 2384 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2385#endif
6224f72b
GS
2386 my_exit(0);
2387 }
3280af22 2388 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2389 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2390 if (PL_initav)
2391 call_list(oldscope, PL_initav);
6224f72b
GS
2392 }
2393
2394 /* do it */
2395
3280af22 2396 if (PL_restartop) {
533c011a 2397 PL_op = PL_restartop;
3280af22 2398 PL_restartop = 0;
cea2e8a9 2399 CALLRUNOPS(aTHX);
6224f72b 2400 }
3280af22
NIS
2401 else if (PL_main_start) {
2402 CvDEPTH(PL_main_cv) = 1;
533c011a 2403 PL_op = PL_main_start;
cea2e8a9 2404 CALLRUNOPS(aTHX);
6224f72b 2405 }
f6b3007c
JH
2406 my_exit(0);
2407 /* NOTREACHED */
6224f72b
GS
2408}
2409
954c1994 2410/*
ccfc67b7
JH
2411=head1 SV Manipulation Functions
2412
954c1994
GS
2413=for apidoc p||get_sv
2414
2415Returns the SV of the specified Perl scalar. If C<create> is set and the
2416Perl variable does not exist then it will be created. If C<create> is not
2417set and the variable does not exist then NULL is returned.
2418
2419=cut
2420*/
2421
6224f72b 2422SV*
864dbfa3 2423Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2424{
2425 GV *gv;
6224f72b
GS
2426 gv = gv_fetchpv(name, create, SVt_PV);
2427 if (gv)
2428 return GvSV(gv);
a0714e2c 2429 return NULL;
6224f72b
GS
2430}
2431
954c1994 2432/*
ccfc67b7
JH
2433=head1 Array Manipulation Functions
2434
954c1994
GS
2435=for apidoc p||get_av
2436
2437Returns the AV of the specified Perl array. If C<create> is set and the
2438Perl variable does not exist then it will be created. If C<create> is not
2439set and the variable does not exist then NULL is returned.
2440
2441=cut
2442*/
2443
6224f72b 2444AV*
864dbfa3 2445Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2446{
c4420975 2447 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2448 if (create)
2449 return GvAVn(gv);
2450 if (gv)
2451 return GvAV(gv);
7d49f689 2452 return NULL;
6224f72b
GS
2453}
2454
954c1994 2455/*
ccfc67b7
JH
2456=head1 Hash Manipulation Functions
2457
954c1994
GS
2458=for apidoc p||get_hv
2459
2460Returns the HV of the specified Perl hash. If C<create> is set and the
2461Perl variable does not exist then it will be created. If C<create> is not
2462set and the variable does not exist then NULL is returned.
2463
2464=cut
2465*/
2466
6224f72b 2467HV*
864dbfa3 2468Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2469{
890ce7af 2470 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2471 if (create)
2472 return GvHVn(gv);
2473 if (gv)
2474 return GvHV(gv);
5c284bb0 2475 return NULL;
a0d0e21e
LW
2476}
2477
954c1994 2478/*
ccfc67b7
JH
2479=head1 CV Manipulation Functions
2480
954c1994
GS
2481=for apidoc p||get_cv
2482
2483Returns the CV of the specified Perl subroutine. If C<create> is set and
2484the Perl subroutine does not exist then it will be declared (which has the
2485same effect as saying C<sub name;>). If C<create> is not set and the
2486subroutine does not exist then NULL is returned.
2487
2488=cut
2489*/
2490
a0d0e21e 2491CV*
864dbfa3 2492Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2493{
c4420975 2494 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2495 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2496 /* XXX this is probably not what they think they're getting.
2497 * It has the same effect as "sub name;", i.e. just a forward
2498 * declaration! */
8ebc5c01 2499 if (create && !GvCVu(gv))
774d564b 2500 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2501 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2502 NULL, NULL);
a0d0e21e 2503 if (gv)
8ebc5c01 2504 return GvCVu(gv);
601f1833 2505 return NULL;
a0d0e21e
LW
2506}
2507
79072805
LW
2508/* Be sure to refetch the stack pointer after calling these routines. */
2509
954c1994 2510/*
ccfc67b7
JH
2511
2512=head1 Callback Functions
2513
954c1994
GS
2514=for apidoc p||call_argv
2515
2516Performs a callback to the specified Perl sub. See L<perlcall>.
2517
2518=cut
2519*/
2520
a0d0e21e 2521I32
8f42b153 2522Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2523
8ac85365
NIS
2524 /* See G_* flags in cop.h */
2525 /* null terminated arg list */
8990e307 2526{
97aff369 2527 dVAR;
a0d0e21e 2528 dSP;
8990e307 2529
924508f0 2530 PUSHMARK(SP);
a0d0e21e 2531 if (argv) {
8990e307 2532 while (*argv) {
a0d0e21e 2533 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2534 argv++;
2535 }
a0d0e21e 2536 PUTBACK;
8990e307 2537 }
864dbfa3 2538 return call_pv(sub_name, flags);
8990e307
LW
2539}
2540
954c1994
GS
2541/*
2542=for apidoc p||call_pv
2543
2544Performs a callback to the specified Perl sub. See L<perlcall>.
2545
2546=cut
2547*/
2548
a0d0e21e 2549I32
864dbfa3 2550Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2551 /* name of the subroutine */
2552 /* See G_* flags in cop.h */
a0d0e21e 2553{
864dbfa3 2554 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2555}
2556
954c1994
GS
2557/*
2558=for apidoc p||call_method
2559
2560Performs a callback to the specified Perl method. The blessed object must
2561be on the stack. See L<perlcall>.
2562
2563=cut
2564*/
2565
a0d0e21e 2566I32
864dbfa3 2567Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2568 /* name of the subroutine */
2569 /* See G_* flags in cop.h */
a0d0e21e 2570{
968b3946 2571 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2572}
2573
2574/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2575/*
2576=for apidoc p||call_sv
2577
2578Performs a callback to the Perl sub whose name is in the SV. See
2579L<perlcall>.
2580
2581=cut
2582*/
2583
a0d0e21e 2584I32
864dbfa3 2585Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2586 /* See G_* flags in cop.h */
a0d0e21e 2587{
27da23d5 2588 dVAR; dSP;
a0d0e21e 2589 LOGOP myop; /* fake syntax tree node */
968b3946 2590 UNOP method_op;
aa689395 2591 I32 oldmark;
8ea43dc8 2592 VOL I32 retval = 0;
a0d0e21e 2593 I32 oldscope;
54310121 2594 bool oldcatch = CATCH_GET;
6224f72b 2595 int ret;
c4420975 2596 OP* const oldop = PL_op;
db36c5a1 2597 dJMPENV;
1e422769 2598
a0d0e21e
LW
2599 if (flags & G_DISCARD) {
2600 ENTER;
2601 SAVETMPS;
2602 }
2603
aa689395 2604 Zero(&myop, 1, LOGOP);
5f66b61c 2605 myop.op_next = NULL;
f51d4af5 2606 if (!(flags & G_NOARGS))
aa689395 2607 myop.op_flags |= OPf_STACKED;
54310121
PP
2608 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2609 (flags & G_ARRAY) ? OPf_WANT_LIST :
2610 OPf_WANT_SCALAR);
462e5cf6 2611 SAVEOP();
533c011a 2612 PL_op = (OP*)&myop;
aa689395 2613
3280af22
NIS
2614 EXTEND(PL_stack_sp, 1);
2615 *++PL_stack_sp = sv;
aa689395 2616 oldmark = TOPMARK;
3280af22 2617 oldscope = PL_scopestack_ix;
a0d0e21e 2618
3280af22 2619 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2620 /* Handle first BEGIN of -d. */
3280af22 2621 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2622 /* Try harder, since this may have been a sighandler, thus
2623 * curstash may be meaningless. */
3280af22 2624 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2625 && !(flags & G_NODEBUG))
533c011a 2626 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2627
968b3946
GS
2628 if (flags & G_METHOD) {
2629 Zero(&method_op, 1, UNOP);
2630 method_op.op_next = PL_op;
2631 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2632 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2633 PL_op = (OP*)&method_op;
968b3946
GS
2634 }
2635
312caa8e 2636 if (!(flags & G_EVAL)) {
0cdb2077 2637 CATCH_SET(TRUE);
d6f07c05 2638 CALL_BODY_SUB((OP*)&myop);
312caa8e 2639 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2640 CATCH_SET(oldcatch);
312caa8e
CS
2641 }
2642 else {
d78bda3d 2643 myop.op_other = (OP*)&myop;
3280af22 2644 PL_markstack_ptr--;
edb2152a 2645 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2646 PL_markstack_ptr++;
a0d0e21e 2647
14dd3ad8 2648 JMPENV_PUSH(ret);
edb2152a 2649
6224f72b
GS
2650 switch (ret) {
2651 case 0:
14dd3ad8 2652 redo_body:
d6f07c05 2653 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2654 retval = PL_stack_sp - (PL_stack_base + oldmark);
2655 if (!(flags & G_KEEPERR))
c69006e4 2656 sv_setpvn(ERRSV,"",0);
a0d0e21e 2657 break;
6224f72b 2658 case 1:
f86702cc 2659 STATUS_ALL_FAILURE;
a0d0e21e 2660 /* FALL THROUGH */
6224f72b 2661 case 2:
a0d0e21e 2662 /* my_exit() was called */
3280af22 2663 PL_curstash = PL_defstash;
a0d0e21e 2664 FREETMPS;
14dd3ad8 2665 JMPENV_POP;
cc3604b1 2666 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2667 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2668 my_exit_jump();
a0d0e21e 2669 /* NOTREACHED */
6224f72b 2670 case 3:
3280af22 2671 if (PL_restartop) {
533c011a 2672 PL_op = PL_restartop;
3280af22 2673 PL_restartop = 0;
312caa8e 2674 goto redo_body;
a0d0e21e 2675 }
3280af22 2676 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2677 if (flags & G_ARRAY)
2678 retval = 0;
2679 else {
2680 retval = 1;
3280af22 2681 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2682 }
312caa8e 2683 break;
a0d0e21e 2684 }
a0d0e21e 2685
edb2152a
NC
2686 if (PL_scopestack_ix > oldscope)
2687 delete_eval_scope();
14dd3ad8 2688 JMPENV_POP;
a0d0e21e 2689 }
1e422769 2690
a0d0e21e 2691 if (flags & G_DISCARD) {
3280af22 2692 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2693 retval = 0;
2694 FREETMPS;
2695 LEAVE;
2696 }
533c011a 2697 PL_op = oldop;
a0d0e21e
LW
2698 return retval;
2699}
2700
6e72f9df 2701/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2702
954c1994
GS
2703/*
2704=for apidoc p||eval_sv
2705
2706Tells Perl to C<eval> the string in the SV.
2707
2708=cut
2709*/
2710
a0d0e21e 2711I32
864dbfa3 2712Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2713
8ac85365 2714 /* See G_* flags in cop.h */
a0d0e21e 2715{
97aff369 2716 dVAR;
924508f0 2717 dSP;
a0d0e21e 2718 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2719 VOL I32 oldmark = SP - PL_stack_base;
2720 VOL I32 retval = 0;
6224f72b 2721 int ret;
c4420975 2722 OP* const oldop = PL_op;
db36c5a1 2723 dJMPENV;
84902520 2724
4633a7c4
LW
2725 if (flags & G_DISCARD) {
2726 ENTER;
2727 SAVETMPS;
2728 }
2729
462e5cf6 2730 SAVEOP();
533c011a
NIS
2731 PL_op = (OP*)&myop;
2732 Zero(PL_op, 1, UNOP);
3280af22
NIS
2733 EXTEND(PL_stack_sp, 1);
2734 *++PL_stack_sp = sv;
79072805 2735
4633a7c4
LW
2736 if (!(flags & G_NOARGS))
2737 myop.op_flags = OPf_STACKED;
5f66b61c 2738 myop.op_next = NULL;
6e72f9df 2739 myop.op_type = OP_ENTEREVAL;
54310121
PP
2740 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2741 (flags & G_ARRAY) ? OPf_WANT_LIST :
2742 OPf_WANT_SCALAR);
6e72f9df
PP
2743 if (flags & G_KEEPERR)
2744 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2745
dedbcade
DM
2746 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2747 * before a PUSHEVAL, which corrupts the stack after a croak */
2748 TAINT_PROPER("eval_sv()");
2749
14dd3ad8 2750 JMPENV_PUSH(ret);
6224f72b
GS
2751 switch (ret) {
2752 case 0:
14dd3ad8 2753 redo_body:
d6f07c05 2754 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2755 retval = PL_stack_sp - (PL_stack_base + oldmark);
2756 if (!(flags & G_KEEPERR))
c69006e4 2757 sv_setpvn(ERRSV,"",0);
4633a7c4 2758 break;
6224f72b 2759 case 1:
f86702cc 2760 STATUS_ALL_FAILURE;
4633a7c4 2761 /* FALL THROUGH */
6224f72b 2762 case 2:
4633a7c4 2763 /* my_exit() was called */
3280af22 2764 PL_curstash = PL_defstash;
4633a7c4 2765 FREETMPS;
14dd3ad8 2766 JMPENV_POP;
cc3604b1 2767 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2768 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2769 my_exit_jump();
4633a7c4 2770 /* NOTREACHED */
6224f72b 2771 case 3:
3280af22 2772 if (PL_restartop) {
533c011a 2773 PL_op = PL_restartop;
3280af22 2774 PL_restartop = 0;
312caa8e 2775 goto redo_body;
4633a7c4 2776 }
3280af22 2777 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2778 if (flags & G_ARRAY)
2779 retval = 0;
2780 else {
2781 retval = 1;
3280af22 2782 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2783 }
312caa8e 2784 break;
4633a7c4
LW
2785 }
2786
14dd3ad8 2787 JMPENV_POP;
4633a7c4 2788 if (flags & G_DISCARD) {
3280af22 2789 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2790 retval = 0;
2791 FREETMPS;
2792 LEAVE;
2793 }
533c011a 2794 PL_op = oldop;
4633a7c4
LW
2795 return retval;
2796}
2797
954c1994
GS
2798/*
2799=for apidoc p||eval_pv
2800
2801Tells Perl to C<eval> the given string and return an SV* result.
2802
2803=cut
2804*/
2805
137443ea 2806SV*
864dbfa3 2807Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2808{
97aff369 2809 dVAR;
137443ea
PP
2810 dSP;
2811 SV* sv = newSVpv(p, 0);
2812
864dbfa3 2813 eval_sv(sv, G_SCALAR);
137443ea
PP
2814 SvREFCNT_dec(sv);
2815
2816 SPAGAIN;
2817 sv = POPs;
2818 PUTBACK;
2819
2d8e6c8d 2820 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2821 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2822 }
137443ea
PP
2823
2824 return sv;
2825}
2826
4633a7c4
LW
2827/* Require a module. */
2828
954c1994 2829/*
ccfc67b7
JH
2830=head1 Embedding Functions
2831
954c1994
GS
2832=for apidoc p||require_pv
2833
7d3fb230
BS
2834Tells Perl to C<require> the file named by the string argument. It is
2835analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2836implemented that way; consider using load_module instead.
954c1994 2837
7d3fb230 2838=cut */
954c1994 2839
4633a7c4 2840void
864dbfa3 2841Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2842{
97aff369 2843 dVAR;
d3acc0f7 2844 dSP;
97aff369 2845 SV* sv;
e788e7d3 2846 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2847 PUTBACK;
be41e5d9
NC
2848 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2849 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2850 SPAGAIN;
2851 POPSTACK;
79072805
LW
2852}
2853
79072805 2854void
e1ec3a88 2855Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2856{
71315bf2 2857 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2858
c4420975 2859 if (gv)
14befaf4 2860 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2861}
2862
76e3520e 2863STATIC void
e1ec3a88 2864S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2865{
ab821d7f 2866 /* This message really ought to be max 23 lines.
75c72d73 2867 * Removed -h because the user already knows that option. Others? */
fb73857a 2868
27da23d5 2869 static const char * const usage_msg[] = {
aefc56c5
SF
2870"-0[octal] specify record separator (\\0, if no argument)",
2871"-A[mod][=pattern] activate all/given assertions",
2872"-a autosplit mode with -n or -p (splits $_ into @F)",
2873"-C[number/list] enables the listed Unicode features",
2874"-c check syntax only (runs BEGIN and CHECK blocks)",
2875"-d[:debugger] run program under debugger",
2876"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2877"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2878"-E program like -e, but enables all optional features",
aefc56c5 2879"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2880"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2881"-i[extension] edit <> files in place (makes backup if extension supplied)",
2882"-Idirectory specify @INC/#include directory (several -I's allowed)",
2883"-l[octal] enable line ending processing, specifies line terminator",
2884"-[mM][-]module execute \"use/no module...\" before executing program",
2885"-n assume \"while (<>) { ... }\" loop around program",
2886"-p assume loop like -n but print line also, like sed",
2887"-P run program through C preprocessor before compilation",
2888"-s enable rudimentary parsing for switches after programfile",
2889"-S look for programfile using PATH environment variable",
2890"-t enable tainting warnings",
2891"-T enable tainting checks",
2892"-u dump core after parsing program",
2893"-U allow unsafe operations",
2894"-v print version, subversion (includes VERY IMPORTANT perl info)",
2895"-V[:variable] print configuration summary (or a single Config.pm variable)",
2896"-w enable many useful warnings (RECOMMENDED)",
2897"-W enable all warnings",
2898"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2899"-X disable all warnings",
fb73857a
PP
2900"\n",
2901NULL
2902};
27da23d5 2903 const char * const *p = usage_msg;
fb73857a 2904
b0e47665
GS
2905 PerlIO_printf(PerlIO_stdout(),
2906 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2907 name);
fb73857a 2908 while (*p)
b0e47665 2909 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2910}
2911
b4ab917c
DM
2912/* convert a string of -D options (or digits) into an int.
2913 * sets *s to point to the char after the options */
2914
2915#ifdef DEBUGGING
2916int
e1ec3a88 2917Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2918{
27da23d5 2919 static const char * const usage_msgd[] = {
e6e64d9b
JC
2920 " Debugging flag values: (see also -d)",
2921 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2922 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2923 " l Context (loop) stack processing",
2924 " t Trace execution",
2925 " o Method and overloading resolution",
2926 " c String/numeric conversions",
2927 " P Print profiling info, preprocessor command for -P, source file input state",
2928 " m Memory allocation",
2929 " f Format processing",
2930 " r Regular expression parsing and execution",
2931 " x Syntax tree dump",
3679267a 2932 " u Tainting checks",
e6e64d9b
JC
2933 " H Hash dump -- usurps values()",
2934 " X Scratchpad allocation",
2935 " D Cleaning up",
2936 " S Thread synchronization",
2937 " T Tokenising",
2938 " R Include reference counts of dumped variables (eg when using -Ds)",
2939 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2940 " v Verbose: use in conjunction with other flags",
2941 " C Copy On Write",
2942 " A Consistency checks on internal structures",
3679267a 2943 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2944 NULL
2945 };
b4ab917c
DM
2946 int i = 0;
2947 if (isALPHA(**s)) {
2948 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2949 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2950
2951 for (; isALNUM(**s); (*s)++) {
c4420975 2952 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2953 if (d)
2954 i |= 1 << (d - debopts);
2955 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2956 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2957 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2958 }
2959 }
e6e64d9b 2960 else if (isDIGIT(**s)) {
b4ab917c
DM
2961 i = atoi(*s);
2962 for (; isALNUM(**s); (*s)++) ;
2963 }
ddcf8bc1 2964 else if (givehelp) {
06e869a4 2965 const char *const *p = usage_msgd;
e6e64d9b
JC
2966 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2967 }
b4ab917c
DM
2968# ifdef EBCDIC
2969 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2970 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2971 "-Dp not implemented on this platform\n");
2972# endif
2973 return i;
2974}
2975#endif
2976
79072805
LW
2977/* This routine handles any switches that can be given during run */
2978
2979char *
97bd5664 2980Perl_moreswitches(pTHX_ char *s)
79072805 2981{
27da23d5 2982 dVAR;
84c133a0 2983 UV rschar;
79072805
LW
2984
2985 switch (*s) {
2986 case '0':
a863c7d1 2987 {
f2095865 2988 I32 flags = 0;
a3b680e6 2989 STRLEN numlen;
f2095865
JH
2990
2991 SvREFCNT_dec(PL_rs);
2992 if (s[1] == 'x' && s[2]) {
a3b680e6 2993 const char *e = s+=2;
f2095865
JH
2994 U8 *tmps;
2995
a3b680e6
AL
2996 while (*e)
2997 e++;
f2095865
JH
2998 numlen = e - s;
2999 flags = PERL_SCAN_SILENT_ILLDIGIT;
3000 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3001 if (s + numlen < e) {
3002 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3003 numlen = 0;
3004 s--;
3005 }
396482e1 3006 PL_rs = newSVpvs("");
c5661c80 3007 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3008 tmps = (U8*)SvPVX(PL_rs);
3009 uvchr_to_utf8(tmps, rschar);
3010 SvCUR_set(PL_rs, UNISKIP(rschar));
3011 SvUTF8_on(PL_rs);
3012 }
3013 else {
3014 numlen = 4;
3015 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3016 if (rschar & ~((U8)~0))
3017 PL_rs = &PL_sv_undef;
3018 else if (!rschar && numlen >= 2)
396482e1 3019 PL_rs = newSVpvs("");
f2095865
JH
3020 else {
3021 char ch = (char)rschar;
3022 PL_rs = newSVpvn(&ch, 1);
3023 }
3024 }
800633c3 3025 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3026 return s + numlen;
a863c7d1 3027 }
46487f74 3028 case 'C':
a05d7ebb 3029 s++;
dd374669 3030 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3031 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3032 PL_utf8cache = -1;
46487f74 3033 return s;
2304df62 3034 case 'F':
3280af22 3035 PL_minus_F = TRUE;
ebce5377
RGS
3036 PL_splitstr = ++s;
3037 while (*s && !isSPACE(*s)) ++s;
e49e380e 3038 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3039 return s;
79072805 3040 case 'a':
3280af22 3041 PL_minus_a = TRUE;
79072805
LW
3042 s++;
3043 return s;
3044 case 'c':
3280af22 3045 PL_minus_c = TRUE;
79072805
LW
3046 s++;
3047 return s;
3048 case 'd':
97bd5664 3049 forbid_setid('d', -1);
4633a7c4 3050 s++;
2cbb2ee1
RGS
3051
3052 /* -dt indicates to the debugger that threads will be used */
3053 if (*s == 't' && !isALNUM(s[1])) {
3054 ++s;
3055 my_setenv("PERL5DB_THREADED", "1");
3056 }
3057
70c94a19
RR
3058 /* The following permits -d:Mod to accepts arguments following an =
3059 in the fashion that -MSome::Mod does. */
3060 if (*s == ':' || *s == '=') {
06b5626a 3061 const char *start;
396482e1 3062 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3063 start = ++s;
3064 /* We now allow -d:Module=Foo,Bar */
3065 while(isALNUM(*s) || *s==':') ++s;
3066 if (*s != '=')
3067 sv_catpv(sv, start);
3068 else {
3069 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3070 /* Don't use NUL as q// delimiter here, this string goes in the
3071 * environment. */
3072 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3073 }
4633a7c4 3074 s += strlen(s);
184f32ec 3075 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3076 }
ed094faf 3077 if (!PL_perldb) {
3280af22 3078 PL_perldb = PERLDB_ALL;
a0d0e21e 3079 init_debugger();
ed094faf 3080 }
79072805
LW
3081 return s;
3082 case 'D':
0453d815 3083 {
79072805 3084#ifdef DEBUGGING
97bd5664 3085 forbid_setid('D', -1);
b4ab917c 3086 s++;
dd374669 3087 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3088#else /* !DEBUGGING */
0453d815 3089 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3090 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3091 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3092 for (s++; isALNUM(*s); s++) ;
79072805 3093#endif
79072805 3094 return s;
0453d815 3095 }
4633a7c4 3096 case 'h':
ac27b0f5 3097 usage(PL_origargv[0]);
7ca617d0 3098 my_exit(0);
79072805 3099 case 'i':
43c5f42d 3100 Safefree(PL_inplace);
c030f24b
GH
3101#if defined(__CYGWIN__) /* do backup extension automagically */
3102 if (*(s+1) == '\0') {
c86a4f2e 3103 PL_inplace = savepvs(".bak");
c030f24b
GH
3104 return s+1;
3105 }
3106#endif /* __CYGWIN__ */
5ef5d758 3107 {
d4c19fe8 3108 const char * const start = ++s;
5ef5d758
NC
3109 while (*s && !isSPACE(*s))
3110 ++s;
3111
3112 PL_inplace = savepvn(start, s - start);
3113 }
7b8d334a 3114 if (*s) {
5ef5d758 3115 ++s;
7b8d334a 3116 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3117 s++;
7b8d334a 3118 }
fb73857a 3119 return s;
4e49a025 3120 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3121 forbid_setid('I', -1);
fb73857a
PP
3122 ++s;
3123 while (*s && isSPACE(*s))
3124 ++s;
3125 if (*s) {
774d564b 3126 char *e, *p;
0df16ed7
GS
3127 p = s;
3128 /* ignore trailing spaces (possibly followed by other switches) */
3129 do {
3130 for (e = p; *e && !isSPACE(*e); e++) ;
3131 p = e;
3132 while (isSPACE(*p))
3133 p++;
3134 } while (*p && *p != '-');
3135 e = savepvn(s, e-s);
88fe16b2 3136 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3137 Safefree(e);
3138 s = p;
3139 if (*s == '-')
3140 s++;
79072805
LW
3141 }
3142 else
a67e862a 3143 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3144 return s;
79072805 3145 case 'l':
3280af22 3146 PL_minus_l = TRUE;
79072805 3147 s++;
7889fe52
NIS
3148 if (PL_ors_sv) {
3149 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3150 PL_ors_sv = NULL;
7889fe52 3151 }
79072805 3152 if (isDIGIT(*s)) {
53305cf1 3153 I32 flags = 0;
a3b680e6 3154 STRLEN numlen;
396482e1 3155 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3156 numlen = 3 + (*s == '0');
3157 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3158 s += numlen;
3159 }
3160 else {
8bfdd7d9 3161 if (RsPARA(PL_rs)) {
396482e1 3162 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3163 }
3164 else {
8bfdd7d9 3165 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3166 }
79072805
LW
3167 }
3168 return s;
06492da6 3169 case 'A':
97bd5664 3170 forbid_setid('A', -1);
930366bd
RGS
3171 if (!PL_preambleav)
3172 PL_preambleav = newAV();
aefc56c5
SF
3173 s++;
3174 {
44f8325f 3175 char * const start = s;
396482e1 3176 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3177 while(isALNUM(*s) || *s == ':') ++s;
3178 if (s != start) {
396482e1 3179 sv_catpvs(sv, "::");
aefc56c5
SF
3180 sv_catpvn(sv, start, s-start);
3181 }
3182 if (*s == '=') {
0c5a913d 3183 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3184 s+=strlen(s);
3185 }
3186 else if (*s != '\0') {
551405c4 3187 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3188 }
06492da6 3189 av_push(PL_preambleav, sv);
aefc56c5 3190 return s;
06492da6 3191 }
1a30305b 3192 case 'M':
97bd5664 3193 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3194 /* FALL THROUGH */
3195 case 'm':
97bd5664 3196 forbid_setid('m', -1); /* XXX ? */
1a30305b 3197 if (*++s) {
a5f75d66 3198 char *start;
11343788 3199 SV *sv;
e1ec3a88 3200 const char *use = "use ";
a5f75d66 3201 /* -M-foo == 'no foo' */
d0043bd1
NC
3202 /* Leading space on " no " is deliberate, to make both
3203 possibilities the same length. */
3204 if (*s == '-') { use = " no "; ++s; }
3205 sv = newSVpvn(use,4);
a5f75d66 3206 start = s;
1a30305b 3207 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3208 while(isALNUM(*s) || *s==':') ++s;
3209 if (*s != '=') {
11343788 3210 sv_catpv(sv, start);
c07a80fd
PP
3211 if (*(start-1) == 'm') {
3212 if (*s != '\0')
cea2e8a9 3213 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3214 sv_catpvs( sv, " ()");
c07a80fd
PP
3215 }
3216 } else {
6df41af2 3217 if (s == start)
be98fb35
GS
3218 Perl_croak(aTHX_ "Module name required with -%c option",
3219 s[-1]);
11343788 3220 sv_catpvn(sv, start, s-start);
396482e1
GA
3221 sv_catpvs(sv, " split(/,/,q");
3222 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3223 sv_catpv(sv, ++s);
396482e1 3224 sv_catpvs(sv, "\0)");
c07a80fd 3225 }
1a30305b 3226 s += strlen(s);
5c831c24 3227 if (!PL_preambleav)
3280af22
NIS
3228 PL_preambleav = newAV();
3229 av_push(PL_preambleav, sv);
1a30305b
PP
3230 }
3231 else
9e81e6a1 3232 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3233 return s;
79072805 3234 case 'n':
3280af22 3235 PL_minus_n = TRUE;
79072805
LW
3236 s++;
3237 return s;
3238 case 'p':
3280af22 3239 PL_minus_p = TRUE;
79072805
LW
3240 s++;
3241 return s;
3242 case 's':
97bd5664 3243 forbid_setid('s', -1);
3280af22 3244 PL_doswitches = TRUE;
79072805
LW
3245 s++;
3246 return s;
6537fe72
MS
3247 case 't':
3248 if (!PL_tainting)
22f7c9c9 3249 TOO_LATE_FOR('t');
6537fe72
MS
3250 s++;
3251 return s;
463ee0b2 3252 case 'T':
3280af22 3253 if (!PL_tainting)
22f7c9c9 3254 TOO_LATE_FOR('T');
463ee0b2
LW
3255 s++;
3256 return s;
79072805 3257 case 'u':
bf4acbe4
GS
3258#ifdef MACOS_TRADITIONAL
3259 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3260#endif
3280af22 3261 PL_do_undump = TRUE;
79072805
LW
3262 s++;
3263 return s;
3264 case 'U':
3280af22 3265 PL_unsafe = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 'v':
d7aa5382 3269 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3270 upg_version(PL_patchlevel);
8e9464f1 3271#if !defined(DGUX)
b0e47665 3272 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3273 Perl_form(aTHX_ "\nThis is perl, %"SVf
3274#ifdef PERL_PATCHNUM
3275 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3276#endif
3277 " built for %s",
95b63a38
JH
3278 (void*)vstringify(PL_patchlevel),
3279 ARCHNAME));
8e9464f1
JH
3280#else /* DGUX */
3281/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3282 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3283 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3284 vstringify(PL_patchlevel)));
8e9464f1
JH
3285 PerlIO_printf(PerlIO_stdout(),
3286 Perl_form(aTHX_ " built under %s at %s %s\n",
3287 OSNAME, __DATE__, __TIME__));
3288 PerlIO_printf(PerlIO_stdout(),
3289 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3290 OSVERS));
8e9464f1
JH
3291#endif /* !DGUX */
3292
fb73857a
PP
3293#if defined(LOCAL_PATCH_COUNT)
3294 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "\n(with %d registered patch%s, "
3297 "see perl -V for more detail)",
bb7a0f54 3298 LOCAL_PATCH_COUNT,
b0e47665 3299 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3300#endif
1a30305b 3301
b0e47665 3302 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3303 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3304#ifdef MACOS_TRADITIONAL
3305 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3306 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3307 "maintained by Chris Nandor\n");
eae9c151 3308#endif
79072805 3309#ifdef MSDOS
b0e47665
GS
3310 PerlIO_printf(PerlIO_stdout(),
3311 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3312#endif
3313#ifdef DJGPP
b0e47665
GS
3314 PerlIO_printf(PerlIO_stdout(),
3315 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3316 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3317#endif
79072805 3318#ifdef OS2
b0e47665
GS
3319 PerlIO_printf(PerlIO_stdout(),
3320 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3321 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3322#endif
79072805 3323#ifdef atarist
b0e47665
GS
3324 PerlIO_printf(PerlIO_stdout(),
3325 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3326#endif
a3f9223b 3327#ifdef __BEOS__
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3330#endif
1d84e8df 3331#ifdef MPE
b0e47665 3332 PerlIO_printf(PerlIO_stdout(),
e583a879 3333 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3334#endif
9d116dd7 3335#ifdef OEMVS
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3338#endif
495c5fdc 3339#ifdef __VOS__
b0e47665 3340 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3341 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3342#endif
092bebab 3343#ifdef __OPEN_VM
b0e47665
GS
3344 PerlIO_printf(PerlIO_stdout(),
3345 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3346#endif
a1a0e61e 3347#ifdef POSIX_BC
b0e47665
GS
3348 PerlIO_printf(PerlIO_stdout(),
3349 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3350#endif
61ae2fbf 3351#ifdef __MINT__
b0e47665
GS
3352 PerlIO_printf(PerlIO_stdout(),
3353 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3354#endif
f83d2536 3355#ifdef EPOC
b0e47665 3356 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3357 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3358#endif
e1caacb4 3359#ifdef UNDER_CE
b475b3e6
JH
3360 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3361 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3362 wce_hitreturn();
3363#endif
a0fd4948 3364#ifdef __SYMBIAN32__
27da23d5
JH
3365 PerlIO_printf(PerlIO_stdout(),
3366 "Symbian port by Nokia, 2004-2005\n");
3367#endif
baed7233
DL
3368#ifdef BINARY_BUILD_NOTICE
3369 BINARY_BUILD_NOTICE;
3370#endif
b0e47665
GS
3371 PerlIO_printf(PerlIO_stdout(),
3372 "\n\
79072805 3373Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3374GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3375Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3376this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3377Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3378 my_exit(0);
79072805 3379 case 'w':
599cee73 3380 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3381 PL_dowarn |= G_WARN_ON;
599cee73
PM
3382 s++;
3383 return s;
3384 case 'W':
ac27b0f5 3385 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3386 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3387 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3388 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3389 s++;
3390 return s;
3391 case 'X':
ac27b0f5 3392 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3393 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3394 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3395 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3396 s++;
3397 return s;
a0d0e21e 3398 case '*':
79072805
LW
3399 case ' ':
3400 if (s[1] == '-') /* Additional switches on #! line. */
3401 return s+2;
3402 break;
a0d0e21e 3403 case '-':
79072805 3404 case 0:
51882d45 3405#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3406 case '\r':
3407#endif
79072805
LW
3408 case '\n':
3409 case '\t':
3410 break;
aa689395
PP
3411#ifdef ALTERNATE_SHEBANG
3412 case 'S': /* OS/2 needs -S on "extproc" line. */
3413 break;
3414#endif
a0d0e21e 3415 case 'P':
3280af22 3416 if (PL_preprocess)
a0d0e21e
LW
3417 return s+1;
3418 /* FALL THROUGH */
79072805 3419 default:
cea2e8a9 3420 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3421 }
bd61b366 3422 return NULL;
79072805
LW
3423}
3424
3425/* compliments of Tom Christiansen */
3426
3427/* unexec() can be found in the Gnu emacs distribution */
ee580363 3428/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3429
3430void
864dbfa3 3431Perl_my_unexec(pTHX)
79072805 3432{
b37c2d43 3433 PERL_UNUSED_CONTEXT;
79072805 3434#ifdef UNEXEC
b37c2d43
AL
3435 SV * prog = newSVpv(BIN_EXP, 0);
3436 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3437 int status = 1;
79072805
LW
3438 extern int etext;
3439
396482e1 3440 sv_catpvs(prog, "/perl");
396482e1 3441 sv_catpvs(file, ".perldump");
79072805 3442
ee580363
GS
3443 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3444 /* unexec prints msg to stderr in case of failure */
6ad3d225 3445 PerlProc_exit(status);
79072805 3446#else
a5f75d66
AD
3447# ifdef VMS
3448# include <lib$routines.h>
3449 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3450# elif defined(WIN32) || defined(__CYGWIN__)
3451 Perl_croak(aTHX_ "dump is not supported");
aa689395 3452# else
79072805 3453 ABORT(); /* for use with undump */
aa689395 3454# endif
a5f75d66 3455#endif
79072805
LW
3456}
3457
cb68f92d
GS
3458/* initialize curinterp */
3459STATIC void
cea2e8a9 3460S_init_interp(pTHX)
cb68f92d 3461{
97aff369 3462 dVAR;
acfe0abc
GS
3463#ifdef MULTIPLICITY
3464# define PERLVAR(var,type)
3465# define PERLVARA(var,n,type)
3466# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3467# define PERLVARI(var,type,init) aTHX->var = init;
3468# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3469# else
acfe0abc
GS
3470# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3471# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3472# endif
acfe0abc 3473# include "intrpvar.h"
b7f7fff6 3474# include "thrdvar.h"
acfe0abc
GS
3475# undef PERLVAR
3476# undef PERLVARA
3477# undef PERLVARI
3478# undef PERLVARIC
3479#else
3480# define PERLVAR(var,type)
3481# define PERLVARA(var,n,type)
3482# define PERLVARI(var,type,init) PL_##var = init;
3483# define PERLVARIC(var,type,init) PL_##var = init;
3484# include "intrpvar.h"
b7f7fff6 3485# include "thrdvar.h"
acfe0abc
GS
3486# undef PERLVAR
3487# undef PERLVARA
3488# undef PERLVARI
3489# undef PERLVARIC
cb68f92d
GS
3490#endif
3491
46ab3289
NC
3492 /* As these are inside a structure, PERLVARI isn't capable of initialising
3493 them */
6c3f0a89
NC
3494 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3495 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3496}
3497
76e3520e 3498STATIC void
cea2e8a9 3499S_init_main_stash(pTHX)
79072805 3500{
97aff369 3501 dVAR;
463ee0b2 3502 GV *gv;