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perl.c: leak avoidance
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
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 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
016af4f1
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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
GS
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
GS
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
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208=head1 Embedding Functions
209
954c1994
GS
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) {
2aea9f8a
GS
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
JP
264 /* set read-only and try to insure than we wont see REFCNT==0
265 very often */
266
3280af22
NIS
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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LW
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 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 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 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 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
551a8b83 795 /* jettison our possibly duplicated environment */
4b647fb0
DM
796 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
797 * so we certainly shouldn't free it here
798 */
2f42fcb0 799#ifndef PERL_MICRO
4b647fb0 800#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 801 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
802#ifdef USE_ITHREADS
803 /* only main thread can free environ[0] contents */
804 && PL_curinterp == aTHX
805#endif
806 )
807 {
551a8b83
JH
808 I32 i;
809
810 for (i = 0; environ[i]; i++)
4b420006 811 safesysfree(environ[i]);
0631ea03 812
4b420006
JH
813 /* Must use safesysfree() when working with environ. */
814 safesysfree(environ);
551a8b83
JH
815
816 environ = PL_origenviron;
817 }
818#endif
2f42fcb0 819#endif /* !PERL_MICRO */
551a8b83 820
30985c42
JH
821 if (destruct_level == 0) {
822
823 DEBUG_P(debprofdump());
824
825#if defined(PERLIO_LAYERS)
826 /* No more IO - including error messages ! */
827 PerlIO_cleanup(aTHX);
828#endif
829
830 CopFILE_free(&PL_compiling);
831 CopSTASH_free(&PL_compiling);
832
833 /* The exit() function will do everything that needs doing. */
834 return STATUS_EXIT;
835 }
836
804ffa60 837 /* reset so print() ends up where we expect */
a0714e2c 838 setdefout(NULL);
804ffa60 839
5f8cb046
DM
840#ifdef USE_ITHREADS
841 /* the syntax tree is shared between clones
842 * so op_free(PL_main_root) only ReREFCNT_dec's
843 * REGEXPs in the parent interpreter
844 * we need to manually ReREFCNT_dec for the clones
845 */
846 {
847 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 848 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
849
850 while (i) {
c4420975 851 SV * const resv = ary[--i];
35061a7e
DM
852
853 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 854 /* this is PL_reg_curpm, already freed
35061a7e
DM
855 * flag is set in regexec.c:S_regtry
856 */
857 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 858 }
1cc8b4c5
AB
859 else if(SvREPADTMP(resv)) {
860 SvREPADTMP_off(resv);
861 }
a560f29b
NC
862 else if(SvIOKp(resv)) {
863 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
864 ReREFCNT_dec(re);
865 }
866 }
867 }
868 SvREFCNT_dec(PL_regex_padav);
7d49f689 869 PL_regex_padav = NULL;
5f8cb046
DM
870 PL_regex_pad = NULL;
871#endif
872
081fc587
AB
873 SvREFCNT_dec((SV*) PL_stashcache);
874 PL_stashcache = NULL;
875
5f05dabc 876 /* loosen bonds of global variables */
877
3280af22
NIS
878 if(PL_rsfp) {
879 (void)PerlIO_close(PL_rsfp);
4608196e 880 PL_rsfp = NULL;
8ebc5c01 881 }
882
883 /* Filters for program text */
3280af22 884 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 885 PL_rsfp_filters = NULL;
8ebc5c01 886
84386e14
RGS
887 if (PL_minus_F) {
888 Safefree(PL_splitstr);
889 PL_splitstr = NULL;
890 }
891
8ebc5c01 892 /* switches */
3280af22
NIS
893 PL_preprocess = FALSE;
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
3280af22
NIS
901 PL_doextract = FALSE;
902 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
903 PL_unsafe = FALSE;
904
905 Safefree(PL_inplace);
bd61b366 906 PL_inplace = NULL;
a7cb1f99 907 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
908
909 if (PL_e_script) {
910 SvREFCNT_dec(PL_e_script);
a0714e2c 911 PL_e_script = NULL;
8ebc5c01 912 }
913
bf9cdc68
RG
914 PL_perldb = 0;
915
8ebc5c01 916 /* magical thingies */
917
7889fe52 918 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 919 PL_ofs_sv = NULL;
5f05dabc 920
7889fe52 921 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 922 PL_ors_sv = NULL;
8ebc5c01 923
3280af22 924 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 925 PL_rs = NULL;
dc92893f 926
d33b2eba 927 Safefree(PL_osname); /* $^O */
bd61b366 928 PL_osname = NULL;
5f05dabc 929
3280af22 930 SvREFCNT_dec(PL_statname);
a0714e2c
SS
931 PL_statname = NULL;
932 PL_statgv = NULL;
5f05dabc 933
8ebc5c01 934 /* defgv, aka *_ should be taken care of elsewhere */
935
8ebc5c01 936 /* clean up after study() */
3280af22 937 SvREFCNT_dec(PL_lastscream);
a0714e2c 938 PL_lastscream = NULL;
3280af22
NIS
939 Safefree(PL_screamfirst);
940 PL_screamfirst = 0;
941 Safefree(PL_screamnext);
942 PL_screamnext = 0;
8ebc5c01 943
7d5ea4e7
GS
944 /* float buffer */
945 Safefree(PL_efloatbuf);
bd61b366 946 PL_efloatbuf = NULL;
7d5ea4e7
GS
947 PL_efloatsize = 0;
948
8ebc5c01 949 /* startup and shutdown function lists */
3280af22 950 SvREFCNT_dec(PL_beginav);
5a837c8f 951 SvREFCNT_dec(PL_beginav_save);
3280af22 952 SvREFCNT_dec(PL_endav);
7d30b5c4 953 SvREFCNT_dec(PL_checkav);
ece599bd 954 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
955 SvREFCNT_dec(PL_unitcheckav);
956 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 957 SvREFCNT_dec(PL_initav);
7d49f689
NC
958 PL_beginav = NULL;
959 PL_beginav_save = NULL;
960 PL_endav = NULL;
961 PL_checkav = NULL;
962 PL_checkav_save = NULL;
3c10abe3
AG
963 PL_unitcheckav = NULL;
964 PL_unitcheckav_save = NULL;
7d49f689 965 PL_initav = NULL;
5618dfe8 966
8ebc5c01 967 /* shortcuts just get cleared */
a0714e2c
SS
968 PL_envgv = NULL;
969 PL_incgv = NULL;
970 PL_hintgv = NULL;
971 PL_errgv = NULL;
972 PL_argvgv = NULL;
973 PL_argvoutgv = NULL;
974 PL_stdingv = NULL;
975 PL_stderrgv = NULL;
976 PL_last_in_gv = NULL;
977 PL_replgv = NULL;
978 PL_DBgv = NULL;
979 PL_DBline = NULL;
980 PL_DBsub = NULL;
981 PL_DBsingle = NULL;
982 PL_DBtrace = NULL;
983 PL_DBsignal = NULL;
984 PL_DBassertion = NULL;
601f1833 985 PL_DBcv = NULL;
7d49f689 986 PL_dbargs = NULL;
5c284bb0 987 PL_debstash = NULL;
8ebc5c01 988
7a1c5554 989 SvREFCNT_dec(PL_argvout_stack);
7d49f689 990 PL_argvout_stack = NULL;
8ebc5c01 991
5c831c24 992 SvREFCNT_dec(PL_modglobal);
5c284bb0 993 PL_modglobal = NULL;
5c831c24 994 SvREFCNT_dec(PL_preambleav);
7d49f689 995 PL_preambleav = NULL;
5c831c24 996 SvREFCNT_dec(PL_subname);
a0714e2c 997 PL_subname = NULL;
5c831c24 998 SvREFCNT_dec(PL_linestr);
a0714e2c 999 PL_linestr = NULL;
ca0c25f6 1000#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1001 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1002 PL_pidstatus = NULL;
ca0c25f6 1003#endif
5c831c24 1004 SvREFCNT_dec(PL_toptarget);
a0714e2c 1005 PL_toptarget = NULL;
5c831c24 1006 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
5c831c24 1009
d33b2eba 1010 /* free locale stuff */
b9582b6a 1011#ifdef USE_LOCALE_COLLATE
d33b2eba 1012 Safefree(PL_collation_name);
bd61b366 1013 PL_collation_name = NULL;
b9582b6a 1014#endif
d33b2eba 1015
b9582b6a 1016#ifdef USE_LOCALE_NUMERIC
d33b2eba 1017 Safefree(PL_numeric_name);
bd61b366 1018 PL_numeric_name = NULL;
a453c169 1019 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1020 PL_numeric_radix_sv = NULL;
b9582b6a 1021#endif
d33b2eba 1022
5c831c24
GS
1023 /* clear utf8 character classes */
1024 SvREFCNT_dec(PL_utf8_alnum);
1025 SvREFCNT_dec(PL_utf8_alnumc);
1026 SvREFCNT_dec(PL_utf8_ascii);
1027 SvREFCNT_dec(PL_utf8_alpha);
1028 SvREFCNT_dec(PL_utf8_space);
1029 SvREFCNT_dec(PL_utf8_cntrl);
1030 SvREFCNT_dec(PL_utf8_graph);
1031 SvREFCNT_dec(PL_utf8_digit);
1032 SvREFCNT_dec(PL_utf8_upper);
1033 SvREFCNT_dec(PL_utf8_lower);
1034 SvREFCNT_dec(PL_utf8_print);
1035 SvREFCNT_dec(PL_utf8_punct);
1036 SvREFCNT_dec(PL_utf8_xdigit);
1037 SvREFCNT_dec(PL_utf8_mark);
1038 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1039 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1040 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1041 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1042 SvREFCNT_dec(PL_utf8_idstart);
1043 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1044 PL_utf8_alnum = NULL;
1045 PL_utf8_alnumc = NULL;
1046 PL_utf8_ascii = NULL;
1047 PL_utf8_alpha = NULL;
1048 PL_utf8_space = NULL;
1049 PL_utf8_cntrl = NULL;
1050 PL_utf8_graph = NULL;
1051 PL_utf8_digit = NULL;
1052 PL_utf8_upper = NULL;
1053 PL_utf8_lower = NULL;
1054 PL_utf8_print = NULL;
1055 PL_utf8_punct = NULL;
1056 PL_utf8_xdigit = NULL;
1057 PL_utf8_mark = NULL;
1058 PL_utf8_toupper = NULL;
1059 PL_utf8_totitle = NULL;
1060 PL_utf8_tolower = NULL;
1061 PL_utf8_tofold = NULL;
1062 PL_utf8_idstart = NULL;
1063 PL_utf8_idcont = NULL;
5c831c24 1064
971a9dd3 1065 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1066 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1067 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1068 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1069 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1070 CopFILE_free(&PL_compiling);
1071 CopSTASH_free(&PL_compiling);
5c831c24 1072
a0d0e21e 1073 /* Prepare to destruct main symbol table. */
5f05dabc 1074
3280af22
NIS
1075 hv = PL_defstash;
1076 PL_defstash = 0;
a0d0e21e 1077 SvREFCNT_dec(hv);
5c831c24 1078 SvREFCNT_dec(PL_curstname);
a0714e2c 1079 PL_curstname = NULL;
a0d0e21e 1080
5a844595
GS
1081 /* clear queued errors */
1082 SvREFCNT_dec(PL_errors);
a0714e2c 1083 PL_errors = NULL;
5a844595 1084
a0d0e21e 1085 FREETMPS;
0453d815 1086 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1087 if (PL_scopestack_ix != 0)
9014280d 1088 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1089 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1090 (long)PL_scopestack_ix);
1091 if (PL_savestack_ix != 0)
9014280d 1092 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1093 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1094 (long)PL_savestack_ix);
1095 if (PL_tmps_floor != -1)
9014280d 1096 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1097 (long)PL_tmps_floor + 1);
a0d0e21e 1098 if (cxstack_ix != -1)
9014280d 1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1100 (long)cxstack_ix + 1);
a0d0e21e 1101 }
8990e307
LW
1102
1103 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1104 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1105 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1106
1107 /* the 2 is for PL_fdpid and PL_strtab */
1108 while (PL_sv_count > 2 && sv_clean_all())
1109 ;
1110
d33b2eba
GS
1111 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1112 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1113 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1114 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1115
d4777f27
GS
1116 AvREAL_off(PL_fdpid); /* no surviving entries */
1117 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1118 PL_fdpid = NULL;
d33b2eba 1119
6c644e78
GS
1120#ifdef HAVE_INTERP_INTERN
1121 sys_intern_clear();
1122#endif
1123
6e72f9df 1124 /* Destruct the global string table. */
1125 {
1126 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1127 * so that sv_free() won't fail on them.
80459961
NC
1128 * Now that the global string table is using a single hunk of memory
1129 * for both HE and HEK, we either need to explicitly unshare it the
1130 * correct way, or actually free things here.
6e72f9df 1131 */
80459961
NC
1132 I32 riter = 0;
1133 const I32 max = HvMAX(PL_strtab);
c4420975 1134 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1135 HE *hent = array[0];
1136
6e72f9df 1137 for (;;) {
0453d815 1138 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1139 HE * const next = HeNEXT(hent);
9014280d 1140 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1141 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1142 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1143 Safefree(hent);
1144 hent = next;
6e72f9df 1145 }
1146 if (!hent) {
1147 if (++riter > max)
1148 break;
1149 hent = array[riter];
1150 }
1151 }
80459961
NC
1152
1153 Safefree(array);
1154 HvARRAY(PL_strtab) = 0;
1155 HvTOTALKEYS(PL_strtab) = 0;
1156 HvFILL(PL_strtab) = 0;
6e72f9df 1157 }
3280af22 1158 SvREFCNT_dec(PL_strtab);
6e72f9df 1159
e652bb2f 1160#ifdef USE_ITHREADS
c21d1a0f 1161 /* free the pointer tables used for cloning */
a0739874 1162 ptr_table_free(PL_ptr_table);
bf9cdc68 1163 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1164#endif
a0739874 1165
d33b2eba
GS
1166 /* free special SVs */
1167
1168 SvREFCNT(&PL_sv_yes) = 0;
1169 sv_clear(&PL_sv_yes);
1170 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1171 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1172
1173 SvREFCNT(&PL_sv_no) = 0;
1174 sv_clear(&PL_sv_no);
1175 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1176 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1177
9f375a43
DM
1178 {
1179 int i;
1180 for (i=0; i<=2; i++) {
1181 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1182 sv_clear(PERL_DEBUG_PAD(i));
1183 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1184 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1185 }
1186 }
1187
0453d815 1188 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1189 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1190
eba0f806
DM
1191#ifdef DEBUG_LEAKING_SCALARS
1192 if (PL_sv_count != 0) {
1193 SV* sva;
1194 SV* sv;
1195 register SV* svend;
1196
1197 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1198 svend = &sva[SvREFCNT(sva)];
1199 for (sv = sva + 1; sv < svend; ++sv) {
1200 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1201 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1202 " flags=0x%"UVxf
fd0854ff
DM
1203 " refcnt=%"UVuf pTHX__FORMAT "\n"
1204 "\tallocated at %s:%d %s %s%s\n",
1205 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1206 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1207 sv->sv_debug_line,
1208 sv->sv_debug_inpad ? "for" : "by",
1209 sv->sv_debug_optype ?
1210 PL_op_name[sv->sv_debug_optype]: "(none)",
1211 sv->sv_debug_cloned ? " (cloned)" : ""
1212 );
2aa47728 1213#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1214 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1215#endif
eba0f806
DM
1216 }
1217 }
1218 }
1219 }
2aa47728
NC
1220#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1221 {
1222 int status;
1223 fd_set rset;
1224 /* Wait for up to 4 seconds for child to terminate.
1225 This seems to be the least effort way of timing out on reaping
1226 its exit status. */
1227 struct timeval waitfor = {4, 0};
41e4abd8 1228 int sock = PL_dumper_fd;
2aa47728
NC
1229
1230 shutdown(sock, 1);
1231 FD_ZERO(&rset);
1232 FD_SET(sock, &rset);
1233 select(sock + 1, &rset, NULL, NULL, &waitfor);
1234 waitpid(child, &status, WNOHANG);
1235 close(sock);
1236 }
1237#endif
eba0f806 1238#endif
bf9cdc68 1239 PL_sv_count = 0;
eba0f806
DM
1240
1241
56a2bab7 1242#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1243 /* No more IO - including error messages ! */
1244 PerlIO_cleanup(aTHX);
1245#endif
1246
9f4bd222 1247 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1248 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1249 for no arg - and will try and SvREFCNT_dec it.
1250 */
1251 SvREFCNT(&PL_sv_undef) = 0;
1252 SvREADONLY_off(&PL_sv_undef);
1253
3280af22 1254 Safefree(PL_origfilename);
bd61b366 1255 PL_origfilename = NULL;
3280af22 1256 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1257 PL_reg_start_tmp = (char**)NULL;
1258 PL_reg_start_tmpl = 0;
43c5f42d 1259 Safefree(PL_reg_curpm);
82ba1be6 1260 Safefree(PL_reg_poscache);
dd28f7bb 1261 free_tied_hv_pool();
3280af22 1262 Safefree(PL_op_mask);
cf36064f 1263 Safefree(PL_psig_ptr);
bf9cdc68 1264 PL_psig_ptr = (SV**)NULL;
cf36064f 1265 Safefree(PL_psig_name);
bf9cdc68 1266 PL_psig_name = (SV**)NULL;
2c2666fc 1267 Safefree(PL_bitcount);
bd61b366 1268 PL_bitcount = NULL;
ce08f86c 1269 Safefree(PL_psig_pend);
bf9cdc68 1270 PL_psig_pend = (int*)NULL;
a0714e2c 1271 PL_formfeed = NULL;
6e72f9df 1272 nuke_stacks();
bf9cdc68
RG
1273 PL_tainting = FALSE;
1274 PL_taint_warn = FALSE;
3280af22 1275 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1276 PL_debug = 0;
ac27b0f5 1277
a0d0e21e 1278 DEBUG_P(debprofdump());
d33b2eba 1279
e5dd39fc 1280#ifdef USE_REENTRANT_API
10bc17b6 1281 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1282#endif
1283
612f20c3
GS
1284 sv_free_arenas();
1285
5d9a96ca
DM
1286 while (PL_regmatch_slab) {
1287 regmatch_slab *s = PL_regmatch_slab;
1288 PL_regmatch_slab = PL_regmatch_slab->next;
1289 Safefree(s);
1290 }
1291
fc36a67e 1292 /* As the absolutely last thing, free the non-arena SV for mess() */
1293
3280af22 1294 if (PL_mess_sv) {
f350b448
NC
1295 /* we know that type == SVt_PVMG */
1296
9c63abab 1297 /* it could have accumulated taint magic */
f350b448
NC
1298 MAGIC* mg;
1299 MAGIC* moremagic;
1300 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1301 moremagic = mg->mg_moremagic;
1302 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1303 && mg->mg_len >= 0)
1304 Safefree(mg->mg_ptr);
1305 Safefree(mg);
9c63abab 1306 }
f350b448 1307
fc36a67e 1308 /* we know that type >= SVt_PV */
8bd4d4c5 1309 SvPV_free(PL_mess_sv);
3280af22
NIS
1310 Safefree(SvANY(PL_mess_sv));
1311 Safefree(PL_mess_sv);
a0714e2c 1312 PL_mess_sv = NULL;
fc36a67e 1313 }
37038d91 1314 return STATUS_EXIT;
79072805
LW
1315}
1316
954c1994
GS
1317/*
1318=for apidoc perl_free
1319
1320Releases a Perl interpreter. See L<perlembed>.
1321
1322=cut
1323*/
1324
79072805 1325void
0cb96387 1326perl_free(pTHXx)
79072805 1327{
7cb608b5 1328#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1329 {
1330 /*
1331 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1332 * value as we're probably hunting memory leaks then
1333 */
1334 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1335 if (!s || atoi(s) == 0) {
1336 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1337 thread at thread exit. */
1338 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1339 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1340 }
1341 }
7cb608b5
NC
1342#endif
1343
acfe0abc 1344#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1345# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1346 {
acfe0abc 1347# ifdef NETWARE
7af12a34 1348 void *host = nw_internal_host;
acfe0abc 1349# else
7af12a34 1350 void *host = w32_internal_host;
acfe0abc 1351# endif
7af12a34 1352 PerlMem_free(aTHXx);
acfe0abc 1353# ifdef NETWARE
7af12a34 1354 nw_delete_internal_host(host);
acfe0abc 1355# else
7af12a34 1356 win32_delete_internal_host(host);
acfe0abc 1357# endif
7af12a34 1358 }
1c0ca838
GS
1359# else
1360 PerlMem_free(aTHXx);
1361# endif
acfe0abc
GS
1362#else
1363 PerlMem_free(aTHXx);
76e3520e 1364#endif
79072805
LW
1365}
1366
b7f7fff6 1367#if defined(USE_ITHREADS)
aebd1ac7
GA
1368/* provide destructors to clean up the thread key when libperl is unloaded */
1369#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1370
826955bd 1371#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1372#pragma fini "perl_fini"
666ad1ec
GA
1373#elif defined(__sun) && !defined(__GNUC__)
1374#pragma fini (perl_fini)
aebd1ac7
GA
1375#endif
1376
0dbb1585
AL
1377static void
1378#if defined(__GNUC__)
1379__attribute__((destructor))
aebd1ac7 1380#endif
de009b76 1381perl_fini(void)
aebd1ac7 1382{
27da23d5 1383 dVAR;
aebd1ac7
GA
1384 if (PL_curinterp)
1385 FREE_THREAD_KEY;
1386}
1387
1388#endif /* WIN32 */
1389#endif /* THREADS */
1390
4b556e6c 1391void
864dbfa3 1392Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1393{
97aff369 1394 dVAR;
3280af22
NIS
1395 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1396 PL_exitlist[PL_exitlistlen].fn = fn;
1397 PL_exitlist[PL_exitlistlen].ptr = ptr;
1398 ++PL_exitlistlen;
4b556e6c
JD
1399}
1400
56cf6df8
RGS
1401#ifdef HAS_PROCSELFEXE
1402/* This is a function so that we don't hold on to MAXPATHLEN
1403 bytes of stack longer than necessary
1404 */
1405STATIC void
e1ec3a88 1406S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1407{
1408 char buf[MAXPATHLEN];
1409 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1410
1411 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1412 includes a spurious NUL which will cause $^X to fail in system
1413 or backticks (this will prevent extensions from being built and
1414 many tests from working). readlink is not meant to add a NUL.
1415 Normal readlink works fine.
1416 */
1417 if (len > 0 && buf[len-1] == '\0') {
1418 len--;
1419 }
1420
1421 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1422 returning the text "unknown" from the readlink rather than the path
1423 to the executable (or returning an error from the readlink). Any valid
1424 path has a '/' in it somewhere, so use that to validate the result.
1425 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1426 */
1427 if (len > 0 && memchr(buf, '/', len)) {
1428 sv_setpvn(sv,buf,len);
1429 }
1430 else {
1431 sv_setpv(sv,arg0);
1432 }
1433}
1434#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1435
1436STATIC void
1437S_set_caret_X(pTHX) {
97aff369 1438 dVAR;
fafc274c 1439 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1440 if (tmpgv) {
1441#ifdef HAS_PROCSELFEXE
1442 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1443#else
1444#ifdef OS2
c69033f2 1445 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1446#else
c69033f2 1447 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1448#endif
1449#endif
1450 }
1451}
1452
954c1994
GS
1453/*
1454=for apidoc perl_parse
1455
1456Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1457
1458=cut
1459*/
1460
79072805 1461int
0cb96387 1462perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1463{
27da23d5 1464 dVAR;
6224f72b 1465 I32 oldscope;
6224f72b 1466 int ret;
db36c5a1 1467 dJMPENV;
8d063cd8 1468
ed6c66dd 1469 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1470
a687059c
LW
1471#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1472#ifdef IAMSUID
1473#undef IAMSUID
cea2e8a9 1474 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1475setuid perl scripts securely.\n");
ae3f3efd 1476#endif /* IAMSUID */
a687059c
LW
1477#endif
1478
b0891165
JH
1479#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1480 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1481 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1482 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1483 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1484 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1485 if (!PL_rehash_seed_set)
1486 PL_rehash_seed = get_hash_seed();
b0891165 1487 {
9d4ba2ae 1488 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1489
1b6737cc
AL
1490 if (s && (atoi(s) == 1))
1491 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1492 }
1493#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1494
3280af22 1495 PL_origargc = argc;
e2975953 1496 PL_origargv = argv;
a0d0e21e 1497
a2722ac9
GA
1498 if (PL_origalen != 0) {
1499 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1500 }
1501 else {
3cb9023d
JH
1502 /* Set PL_origalen be the sum of the contiguous argv[]
1503 * elements plus the size of the env in case that it is
e9137a8e 1504 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1505 * as the maximum modifiable length of $0. In the worst case
1506 * the area we are able to modify is limited to the size of
43c32782 1507 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1508 * --jhi */
e1ec3a88 1509 const char *s = NULL;
54bfe034 1510 int i;
1b6737cc 1511 const UV mask =
7d8e7db3 1512 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1513 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1514 const UV aligned =
43c32782
JH
1515 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1516
1517 /* See if all the arguments are contiguous in memory. Note
1518 * that 'contiguous' is a loose term because some platforms
1519 * align the argv[] and the envp[]. If the arguments look
1520 * like non-aligned, assume that they are 'strictly' or
1521 * 'traditionally' contiguous. If the arguments look like
1522 * aligned, we just check that they are within aligned
1523 * PTRSIZE bytes. As long as no system has something bizarre
1524 * like the argv[] interleaved with some other data, we are
1525 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1526 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1527 while (*s) s++;
1528 for (i = 1; i < PL_origargc; i++) {
1529 if ((PL_origargv[i] == s + 1
43c32782 1530#ifdef OS2
c8941eeb 1531 || PL_origargv[i] == s + 2
43c32782 1532#endif
c8941eeb
JH
1533 )
1534 ||
1535 (aligned &&
1536 (PL_origargv[i] > s &&
1537 PL_origargv[i] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 )
1540 {
1541 s = PL_origargv[i];
1542 while (*s) s++;
1543 }
1544 else
1545 break;
54bfe034 1546 }
54bfe034 1547 }
3cb9023d 1548 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1549 if (s && PL_origenviron) {
43c32782
JH
1550 if ((PL_origenviron[0] == s + 1
1551#ifdef OS2
1552 || (PL_origenviron[0] == s + 9 && (s += 8))
1553#endif
1554 )
1555 ||
1556 (aligned &&
1557 (PL_origenviron[0] > s &&
1558 PL_origenviron[0] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
1562#ifndef OS2
1563 s = PL_origenviron[0];
1564 while (*s) s++;
1565#endif
bd61b366 1566 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1567 /* Force copy of environment. */
1568 for (i = 1; PL_origenviron[i]; i++) {
1569 if (PL_origenviron[i] == s + 1
1570 ||
1571 (aligned &&
1572 (PL_origenviron[i] > s &&
1573 PL_origenviron[i] <=
1574 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1575 )
1576 {
1577 s = PL_origenviron[i];
1578 while (*s) s++;
1579 }
1580 else
1581 break;
54bfe034 1582 }
43c32782 1583 }
54bfe034 1584 }
2d2af554 1585 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1586 }
1587
3280af22 1588 if (PL_do_undump) {
a0d0e21e
LW
1589
1590 /* Come here if running an undumped a.out. */
1591
3280af22
NIS
1592 PL_origfilename = savepv(argv[0]);
1593 PL_do_undump = FALSE;
a0d0e21e 1594 cxstack_ix = -1; /* start label stack again */
748a9306 1595 init_ids();
b7975bdd
NC
1596 assert (!PL_tainted);
1597 TAINT;
1598 S_set_caret_X(aTHX);
1599 TAINT_NOT;
a0d0e21e
LW
1600 init_postdump_symbols(argc,argv,env);
1601 return 0;
1602 }
1603
3280af22 1604 if (PL_main_root) {
3280af22 1605 op_free(PL_main_root);
5f66b61c 1606 PL_main_root = NULL;
ff0cee69 1607 }
5f66b61c 1608 PL_main_start = NULL;
3280af22 1609 SvREFCNT_dec(PL_main_cv);
601f1833 1610 PL_main_cv = NULL;
79072805 1611
3280af22
NIS
1612 time(&PL_basetime);
1613 oldscope = PL_scopestack_ix;
599cee73 1614 PL_dowarn = G_WARN_OFF;
f86702cc 1615
14dd3ad8 1616 JMPENV_PUSH(ret);
6224f72b 1617 switch (ret) {
312caa8e 1618 case 0:
14dd3ad8 1619 parse_body(env,xsinit);
3c10abe3
AG
1620 if (PL_unitcheckav)
1621 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1622 if (PL_checkav)
1623 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1624 ret = 0;
1625 break;
6224f72b
GS
1626 case 1:
1627 STATUS_ALL_FAILURE;
1628 /* FALL THROUGH */
1629 case 2:
1630 /* my_exit() was called */
3280af22 1631 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1632 LEAVE;
1633 FREETMPS;
3280af22 1634 PL_curstash = PL_defstash;
3c10abe3
AG
1635 if (PL_unitcheckav)
1636 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1637 if (PL_checkav)
1638 call_list(oldscope, PL_checkav);
37038d91 1639 ret = STATUS_EXIT;
14dd3ad8 1640 break;
6224f72b 1641 case 3:
bf49b057 1642 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1643 ret = 1;
1644 break;
6224f72b 1645 }
14dd3ad8
GS
1646 JMPENV_POP;
1647 return ret;
1648}
1649
312caa8e 1650STATIC void *
14dd3ad8 1651S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1652{
27da23d5 1653 dVAR;
312caa8e 1654 int argc = PL_origargc;
8f42b153 1655 char **argv = PL_origargv;
e1ec3a88 1656 const char *scriptname = NULL;
312caa8e 1657 VOL bool dosearch = FALSE;
e1ec3a88 1658 const char *validarg = "";
312caa8e 1659 register SV *sv;
47f56822 1660 register char *s, c;
bd61b366 1661 const char *cddir = NULL;
ab019eaa 1662#ifdef USE_SITECUSTOMIZE
20ef40cf 1663 bool minus_f = FALSE;
ab019eaa 1664#endif
312caa8e 1665
3280af22 1666 sv_setpvn(PL_linestr,"",0);
396482e1 1667 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1668 SAVEFREESV(sv);
1669 init_main_stash();
54310121 1670
6224f72b
GS
1671 for (argc--,argv++; argc > 0; argc--,argv++) {
1672 if (argv[0][0] != '-' || !argv[0][1])
1673 break;
1674#ifdef DOSUID
1675 if (*validarg)
1676 validarg = " PHOOEY ";
1677 else
1678 validarg = argv[0];
ae3f3efd
PS
1679 /*
1680 * Can we rely on the kernel to start scripts with argv[1] set to
1681 * contain all #! line switches (the whole line)? (argv[0] is set to
1682 * the interpreter name, argv[2] to the script name; argv[3] and
1683 * above may contain other arguments.)
1684 */
13281fa4 1685#endif
6224f72b
GS
1686 s = argv[0]+1;
1687 reswitch:
47f56822 1688 switch ((c = *s)) {
729a02f2 1689 case 'C':
1d5472a9
GS
1690#ifndef PERL_STRICT_CR
1691 case '\r':
1692#endif
6224f72b
GS
1693 case ' ':
1694 case '0':
1695 case 'F':
1696 case 'a':
1697 case 'c':
1698 case 'd':
1699 case 'D':
1700 case 'h':
1701 case 'i':
1702 case 'l':
1703 case 'M':
1704 case 'm':
1705 case 'n':
1706 case 'p':
1707 case 's':
1708 case 'u':
1709 case 'U':
1710 case 'v':
599cee73
PM
1711 case 'W':
1712 case 'X':
6224f72b 1713 case 'w':
06492da6 1714 case 'A':
97bd5664 1715 if ((s = moreswitches(s)))
6224f72b
GS
1716 goto reswitch;
1717 break;
33b78306 1718
1dbad523 1719 case 't':
22f7c9c9 1720 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1721 if( !PL_tainting ) {
1722 PL_taint_warn = TRUE;
1723 PL_tainting = TRUE;
1724 }
1725 s++;
1726 goto reswitch;
6224f72b 1727 case 'T':
22f7c9c9 1728 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1729 PL_tainting = TRUE;
317ea90d 1730 PL_taint_warn = FALSE;
6224f72b
GS
1731 s++;
1732 goto reswitch;
f86702cc 1733
bc9b29db
RH
1734 case 'E':
1735 PL_minus_E = TRUE;
1736 /* FALL THROUGH */
6224f72b 1737 case 'e':
bf4acbe4
GS
1738#ifdef MACOS_TRADITIONAL
1739 /* ignore -e for Dev:Pseudo argument */
1740 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1741 break;
bf4acbe4 1742#endif
a52eba0e 1743 forbid_setid('e', -1);
3280af22 1744 if (!PL_e_script) {
396482e1 1745 PL_e_script = newSVpvs("");
0cb96387 1746 filter_add(read_e_script, NULL);
6224f72b
GS
1747 }
1748 if (*++s)
3280af22 1749 sv_catpv(PL_e_script, s);
6224f72b 1750 else if (argv[1]) {
3280af22 1751 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1752 argc--,argv++;
1753 }
1754 else
47f56822 1755 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1756 sv_catpvs(PL_e_script, "\n");
6224f72b 1757 break;
afe37c7d 1758
20ef40cf 1759 case 'f':
f5542d3a 1760#ifdef USE_SITECUSTOMIZE
20ef40cf 1761 minus_f = TRUE;
f5542d3a 1762#endif
20ef40cf
GA
1763 s++;
1764 goto reswitch;
1765
6224f72b 1766 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1767 forbid_setid('I', -1);
bd61b366 1768 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1769 argc--,argv++;
1770 }
6224f72b 1771 if (s && *s) {
0df16ed7 1772 STRLEN len = strlen(s);
aec46f14 1773 const char * const p = savepvn(s, len);
88fe16b2 1774 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1775 sv_catpvs(sv, "-I");
0df16ed7 1776 sv_catpvn(sv, p, len);
396482e1 1777 sv_catpvs(sv, " ");
6224f72b 1778 Safefree(p);
0df16ed7
GS
1779 }
1780 else
a67e862a 1781 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1782 break;
1783 case 'P':
a52eba0e 1784 forbid_setid('P', -1);
3280af22 1785 PL_preprocess = TRUE;
6224f72b
GS
1786 s++;
1787 goto reswitch;
1788 case 'S':
a52eba0e 1789 forbid_setid('S', -1);
6224f72b
GS
1790 dosearch = TRUE;
1791 s++;
1792 goto reswitch;
1793 case 'V':
7edfd0ef
NC
1794 {
1795 SV *opts_prog;
1796
1797 if (!PL_preambleav)
1798 PL_preambleav = newAV();
1799 av_push(PL_preambleav,
396482e1 1800 newSVpvs("use Config;"));
7edfd0ef
NC
1801 if (*++s != ':') {
1802 STRLEN opts;
1803
396482e1 1804 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1805#ifdef VMS
396482e1 1806 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1807#else
396482e1 1808 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1809#endif
7edfd0ef 1810 opts = SvCUR(opts_prog);
efcaa95b 1811
9cd7d3f2 1812 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1813# ifdef DEBUGGING
e2e4dbf1 1814 " DEBUGGING"
6224f72b 1815# endif
4f185743
NC
1816# ifdef DEBUG_LEAKING_SCALARS
1817 " DEBUG_LEAKING_SCALARS"
1818# endif
85e1fcb9 1819# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1820 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1821# endif
1822# ifdef FAKE_THREADS
e2e4dbf1 1823 " FAKE_THREADS"
85e1fcb9 1824# endif
6224f72b 1825# ifdef MULTIPLICITY
e2e4dbf1 1826 " MULTIPLICITY"
6224f72b 1827# endif
85e1fcb9 1828# ifdef MYMALLOC
e2e4dbf1 1829 " MYMALLOC"
85e1fcb9 1830# endif
3bcf5ed8
SP
1831# ifdef NO_MATHOMS
1832 " NO_MATHOMS"
1833# endif
85e1fcb9 1834# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1835 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1836# endif
1837# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1838 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1839# endif
1840# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1841 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1842# endif
1843# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1844 " PERL_IMPLICIT_SYS"
85e1fcb9 1845# endif
a724edfe
NC
1846# ifdef PERL_MAD
1847 " PERL_MAD"
1848# endif
85e1fcb9 1849# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1850 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1851# endif
1852# ifdef PERL_NEED_APPCTX
e2e4dbf1 1853 " PERL_NEED_APPCTX"
85e1fcb9
SH
1854# endif
1855# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1856 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1857# endif
1858# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1859 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1860# endif
9c0a4d5d
DM
1861# ifdef PERL_TRACK_MEMPOOL
1862 " PERL_TRACK_MEMPOOL"
1863# endif
417cd4a8
SP
1864# ifdef PERL_USE_SAFE_PUTENV
1865 " PERL_USE_SAFE_PUTENV"
1866# endif
ca0c25f6
NC
1867#ifdef PERL_USES_PL_PIDSTATUS
1868 " PERL_USES_PL_PIDSTATUS"
1869#endif
85e1fcb9 1870# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1871 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1872# endif
1873# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1874 " THREADS_HAVE_PIDS"
85e1fcb9 1875# endif
85e1fcb9 1876# ifdef USE_64_BIT_ALL
e2e4dbf1 1877 " USE_64_BIT_ALL"
ac5e8965 1878# endif
10cc9d2a 1879# ifdef USE_64_BIT_INT
e2e4dbf1 1880 " USE_64_BIT_INT"
10cc9d2a 1881# endif
85e1fcb9 1882# ifdef USE_ITHREADS
e2e4dbf1 1883 " USE_ITHREADS"
85e1fcb9
SH
1884# endif
1885# ifdef USE_LARGE_FILES
e2e4dbf1 1886 " USE_LARGE_FILES"
ac5e8965
JH
1887# endif
1888# ifdef USE_LONG_DOUBLE
e2e4dbf1 1889 " USE_LONG_DOUBLE"
ac5e8965 1890# endif
85e1fcb9 1891# ifdef USE_PERLIO
e2e4dbf1 1892 " USE_PERLIO"
53430762 1893# endif
85e1fcb9 1894# ifdef USE_REENTRANT_API
e2e4dbf1 1895 " USE_REENTRANT_API"
85e1fcb9
SH
1896# endif
1897# ifdef USE_SFIO
e2e4dbf1 1898 " USE_SFIO"
ac5e8965 1899# endif
20ef40cf 1900# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1901 " USE_SITECUSTOMIZE"
20ef40cf 1902# endif
85e1fcb9 1903# ifdef USE_SOCKS
e2e4dbf1 1904 " USE_SOCKS"
b363f7ed 1905# endif
e2e4dbf1 1906 );
efcaa95b 1907
7edfd0ef
NC
1908 while (SvCUR(opts_prog) > opts+76) {
1909 /* find last space after "options: " and before col 76
1910 */
efcaa95b 1911
7edfd0ef 1912 const char *space;
c4420975 1913 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1914 const char c = pv[opts+76];
1915 pv[opts+76] = '\0';
1916 space = strrchr(pv+opts+26, ' ');
1917 pv[opts+76] = c;
1918 if (!space) break; /* "Can't happen" */
efcaa95b 1919
7edfd0ef 1920 /* break the line before that space */
efcaa95b 1921
7edfd0ef 1922 opts = space - pv;
89529cee 1923 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1924 STR_WITH_LEN("\\n "));
7edfd0ef 1925 }
efcaa95b 1926
396482e1 1927 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1928
6224f72b 1929#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1930 if (LOCAL_PATCH_COUNT > 0) {
1931 int i;
396482e1 1932 sv_catpvs(opts_prog,
7edfd0ef
NC
1933 "\" Locally applied patches:\\n\",");
1934 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1935 if (PL_localpatches[i])
1936 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1937 0, PL_localpatches[i], 0);
1938 }
6224f72b 1939 }
6224f72b 1940#endif
7edfd0ef
NC
1941 Perl_sv_catpvf(aTHX_ opts_prog,
1942 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1943#ifdef __DATE__
1944# ifdef __TIME__
7edfd0ef
NC
1945 Perl_sv_catpvf(aTHX_ opts_prog,
1946 ",\" Compiled at %s %s\\n\"",__DATE__,
1947 __TIME__);
6224f72b 1948# else
7edfd0ef
NC
1949 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1950 __DATE__);
6224f72b
GS
1951# endif
1952#endif
396482e1 1953 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1954 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1955 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1956#ifdef __CYGWIN__
396482e1 1957 sv_catpvs(opts_prog,
7edfd0ef 1958 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1959#endif
396482e1 1960 sv_catpvs(opts_prog,
7edfd0ef
NC
1961 "print \" \\%ENV:\\n @env\\n\" if @env;"
1962 "print \" \\@INC:\\n @INC\\n\";");
1963 }
1964 else {
1965 ++s;
1966 opts_prog = Perl_newSVpvf(aTHX_
1967 "Config::config_vars(qw%c%s%c)",
1968 0, s, 0);
1969 s += strlen(s);
1970 }
1971 av_push(PL_preambleav, opts_prog);
1972 /* don't look for script or read stdin */
1973 scriptname = BIT_BUCKET;
1974 goto reswitch;
6224f72b 1975 }
6224f72b 1976 case 'x':
3280af22 1977 PL_doextract = TRUE;
6224f72b
GS
1978 s++;
1979 if (*s)
f4c556ac 1980 cddir = s;
6224f72b
GS
1981 break;
1982 case 0:
1983 break;
1984 case '-':
1985 if (!*++s || isSPACE(*s)) {
1986 argc--,argv++;
1987 goto switch_end;
1988 }
1989 /* catch use of gnu style long options */
1990 if (strEQ(s, "version")) {
dd374669 1991 s = (char *)"v";
6224f72b
GS
1992 goto reswitch;
1993 }
1994 if (strEQ(s, "help")) {
dd374669 1995 s = (char *)"h";
6224f72b
GS
1996 goto reswitch;
1997 }
1998 s--;
1999 /* FALL THROUGH */
2000 default:
cea2e8a9 2001 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2002 }
2003 }
6224f72b 2004 switch_end:
54310121 2005
f675dbe5
CB
2006 if (
2007#ifndef SECURE_INTERNAL_GETENV
2008 !PL_tainting &&
2009#endif
cf756827 2010 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2011 {
e1ec3a88 2012 const char *popt = s;
74288ac8
GS
2013 while (isSPACE(*s))
2014 s++;
317ea90d 2015 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2016 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2017 PL_tainting = TRUE;
317ea90d
MS
2018 PL_taint_warn = FALSE;
2019 }
74288ac8 2020 else {
bd61b366 2021 char *popt_copy = NULL;
74288ac8 2022 while (s && *s) {
4ea8f8fb 2023 char *d;
74288ac8
GS
2024 while (isSPACE(*s))
2025 s++;
2026 if (*s == '-') {
2027 s++;
2028 if (isSPACE(*s))
2029 continue;
2030 }
4ea8f8fb 2031 d = s;
74288ac8
GS
2032 if (!*s)
2033 break;
e4af53b0 2034 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2035 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2036 while (++s && *s) {
2037 if (isSPACE(*s)) {
cf756827
GS
2038 if (!popt_copy) {
2039 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2040 s = popt_copy + (s - popt);
2041 d = popt_copy + (d - popt);
2042 }
4ea8f8fb
MS
2043 *s++ = '\0';
2044 break;
2045 }
2046 }
1c4db469 2047 if (*d == 't') {
317ea90d
MS
2048 if( !PL_tainting ) {
2049 PL_taint_warn = TRUE;
2050 PL_tainting = TRUE;
2051 }
1c4db469 2052 } else {
97bd5664 2053 moreswitches(d);
1c4db469 2054 }
6224f72b 2055 }
6224f72b
GS
2056 }
2057 }
a0d0e21e 2058
20ef40cf
GA
2059#ifdef USE_SITECUSTOMIZE
2060 if (!minus_f) {
2061 if (!PL_preambleav)
2062 PL_preambleav = newAV();
2063 av_unshift(PL_preambleav, 1);
2064 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2065 }
2066#endif
2067
317ea90d 2068 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
72dc9ed5 2069 PL_compiling.cop_warnings
8ee4cf24 2070 = Perl_new_warnings_bitfield(aTHX_ NULL, WARN_TAINTstring, WARNsize);
317ea90d
MS
2071 }
2072
6224f72b
GS
2073 if (!scriptname)
2074 scriptname = argv[0];
3280af22 2075 if (PL_e_script) {
6224f72b
GS
2076 argc++,argv--;
2077 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2078 }
bd61b366 2079 else if (scriptname == NULL) {
6224f72b
GS
2080#ifdef MSDOS
2081 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2082 moreswitches("h");
6224f72b
GS
2083#endif
2084 scriptname = "-";
2085 }
2086
b7975bdd
NC
2087 /* Set $^X early so that it can be used for relocatable paths in @INC */
2088 assert (!PL_tainted);
2089 TAINT;
2090 S_set_caret_X(aTHX);
2091 TAINT_NOT;
6224f72b
GS
2092 init_perllib();
2093
a52eba0e
NC
2094 {
2095 int suidscript;
2096 const int fdscript
2097 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2098
a52eba0e 2099 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2100
64ca3a65 2101#ifndef PERL_MICRO
a52eba0e
NC
2102# if defined(SIGCHLD) || defined(SIGCLD)
2103 {
2104# ifndef SIGCHLD
2105# define SIGCHLD SIGCLD
2106# endif
2107 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2108 if (sigstate == (Sighandler_t) SIG_IGN) {
2109 if (ckWARN(WARN_SIGNAL))
2110 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2111 "Can't ignore signal CHLD, forcing to default");
2112 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2113 }
0b5b802d 2114 }
a52eba0e 2115# endif
64ca3a65 2116#endif
0b5b802d 2117
a52eba0e 2118 if (PL_doextract
bf4acbe4 2119#ifdef MACOS_TRADITIONAL
a52eba0e 2120 || gMacPerl_AlwaysExtract
bf4acbe4 2121#endif
a52eba0e 2122 ) {
faef540c
NC
2123
2124 /* This will croak if suidscript is >= 0, as -x cannot be used with
2125 setuid scripts. */
2126 forbid_setid('x', suidscript);
2127 /* Hence you can't get here if suidscript >= 0 */
2128
2129 find_beginning();
a52eba0e
NC
2130 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2131 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2132 }
f4c556ac 2133 }
6224f72b 2134
561b68a9 2135 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2136 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2137 CvUNIQUE_on(PL_compcv);
2138
dd2155a4 2139 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2140
0c4f7ff0 2141 boot_core_PerlIO();
6224f72b 2142 boot_core_UNIVERSAL();
09bef843 2143 boot_core_xsutils();
6224f72b
GS
2144
2145 if (xsinit)
acfe0abc 2146 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2147#ifndef PERL_MICRO
d0d72822 2148#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2149 init_os_extras();
6224f72b 2150#endif
64ca3a65 2151#endif
6224f72b 2152
29209bc5 2153#ifdef USE_SOCKS
1b9c9cf5
DH
2154# ifdef HAS_SOCKS5_INIT
2155 socks5_init(argv[0]);
2156# else
29209bc5 2157 SOCKSinit(argv[0]);
1b9c9cf5 2158# endif
ac27b0f5 2159#endif
29209bc5 2160
6224f72b
GS
2161 init_predump_symbols();
2162 /* init_postdump_symbols not currently designed to be called */
2163 /* more than once (ENV isn't cleared first, for example) */
2164 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2165 if (!PL_do_undump)
6224f72b
GS
2166 init_postdump_symbols(argc,argv,env);
2167
27da23d5
JH
2168 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2169 * or explicitly in some platforms.
085a54d9 2170 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2171 * look like the user wants to use UTF-8. */
a0fd4948 2172#if defined(__SYMBIAN32__)
27da23d5
JH
2173 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2174#endif
06e66572
JH
2175 if (PL_unicode) {
2176 /* Requires init_predump_symbols(). */
a05d7ebb 2177 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2178 IO* io;
2179 PerlIO* fp;
2180 SV* sv;
2181
a05d7ebb 2182 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2183 * and the default open disciplines. */
a05d7ebb
JH
2184 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2185 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2186 (fp = IoIFP(io)))
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2189 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2190 (fp = IoOFP(io)))
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2193 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2194 (fp = IoOFP(io)))
2195 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2196 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2197 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2198 SVt_PV)))) {
a05d7ebb
JH
2199 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2200 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2201 if (in) {
2202 if (out)
2203 sv_setpvn(sv, ":utf8\0:utf8", 11);
2204 else
2205 sv_setpvn(sv, ":utf8\0", 6);
2206 }
2207 else if (out)
2208 sv_setpvn(sv, "\0:utf8", 6);
2209 SvSETMAGIC(sv);
2210 }
b310b053
JH
2211 }
2212 }
2213
4ffa73a3
JH
2214 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2215 if (strEQ(s, "unsafe"))
2216 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2217 else if (strEQ(s, "safe"))
2218 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2219 else
2220 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2221 }
2222
81d86705
NC
2223#ifdef PERL_MAD
2224 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2225 PL_madskills = 1;
2226 PL_minus_c = 1;
2227 if (!s || !s[0])
2228 PL_xmlfp = PerlIO_stdout();
2229 else {
2230 PL_xmlfp = PerlIO_open(s, "w");
2231 if (!PL_xmlfp)
2232 Perl_croak(aTHX_ "Can't open %s", s);
2233 }
2234 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2235 }
2236 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2237 PL_madskills = atoi(s);
2238 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2239 }
2240#endif
2241
6224f72b
GS
2242 init_lexer();
2243
2244 /* now parse the script */
2245
93189314 2246 SETERRNO(0,SS_NORMAL);
3280af22 2247 PL_error_count = 0;
bf4acbe4
GS
2248#ifdef MACOS_TRADITIONAL
2249 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2250 if (PL_minus_c)
2251 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2252 else {
2253 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2254 MacPerl_MPWFileName(PL_origfilename));
2255 }
2256 }
2257#else
3280af22
NIS
2258 if (yyparse() || PL_error_count) {
2259 if (PL_minus_c)
cea2e8a9 2260 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2261 else {
cea2e8a9 2262 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2263 PL_origfilename);
6224f72b
GS
2264 }
2265 }
bf4acbe4 2266#endif
57843af0 2267 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2268 PL_curstash = PL_defstash;
2269 PL_preprocess = FALSE;
2270 if (PL_e_script) {
2271 SvREFCNT_dec(PL_e_script);
a0714e2c 2272 PL_e_script = NULL;
6224f72b
GS
2273 }
2274
3280af22 2275 if (PL_do_undump)
6224f72b
GS
2276 my_unexec();
2277
57843af0
GS
2278 if (isWARN_ONCE) {
2279 SAVECOPFILE(PL_curcop);
2280 SAVECOPLINE(PL_curcop);
3280af22 2281 gv_check(PL_defstash);
57843af0 2282 }
6224f72b
GS
2283
2284 LEAVE;
2285 FREETMPS;
2286
2287#ifdef MYMALLOC
2288 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2289 dump_mstats("after compilation:");
2290#endif
2291
2292 ENTER;
3280af22 2293 PL_restartop = 0;
312caa8e 2294 return NULL;
6224f72b
GS
2295}
2296
954c1994
GS
2297/*
2298=for apidoc perl_run
2299
2300Tells a Perl interpreter to run. See L<perlembed>.
2301
2302=cut
2303*/
2304
6224f72b 2305int
0cb96387 2306perl_run(pTHXx)
6224f72b 2307{
97aff369 2308 dVAR;
6224f72b 2309 I32 oldscope;
14dd3ad8 2310 int ret = 0;
db36c5a1 2311 dJMPENV;
6224f72b 2312
ed6c66dd 2313 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2314
3280af22 2315 oldscope = PL_scopestack_ix;
96e176bf
CL
2316#ifdef VMS
2317 VMSISH_HUSHED = 0;
2318#endif
6224f72b 2319
14dd3ad8 2320 JMPENV_PUSH(ret);
6224f72b
GS
2321 switch (ret) {
2322 case 1:
2323 cxstack_ix = -1; /* start context stack again */
312caa8e 2324 goto redo_body;
14dd3ad8 2325 case 0: /* normal completion */
14dd3ad8
GS
2326 redo_body:
2327 run_body(oldscope);
14dd3ad8
GS
2328 /* FALL THROUGH */
2329 case 2: /* my_exit() */
3280af22 2330 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2331 LEAVE;
2332 FREETMPS;
3280af22 2333 PL_curstash = PL_defstash;
3a1ee7e8 2334 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2335 PL_endav && !PL_minus_c)
2336 call_list(oldscope, PL_endav);
6224f72b
GS
2337#ifdef MYMALLOC
2338 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2339 dump_mstats("after execution: ");
2340#endif
37038d91 2341 ret = STATUS_EXIT;
14dd3ad8 2342 break;
6224f72b 2343 case 3:
312caa8e
CS
2344 if (PL_restartop) {
2345 POPSTACK_TO(PL_mainstack);
2346 goto redo_body;
6224f72b 2347 }
bf49b057 2348 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2349 FREETMPS;
14dd3ad8
GS
2350 ret = 1;
2351 break;
6224f72b
GS
2352 }
2353
14dd3ad8
GS
2354 JMPENV_POP;
2355 return ret;
312caa8e
CS
2356}
2357
14dd3ad8 2358
dd374669 2359STATIC void
14dd3ad8
GS
2360S_run_body(pTHX_ I32 oldscope)
2361{
97aff369 2362 dVAR;
6224f72b 2363 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2364 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2365
3280af22 2366 if (!PL_restartop) {
81d86705
NC
2367#ifdef PERL_MAD
2368 if (PL_xmlfp) {
2369 xmldump_all();
2370 exit(0); /* less likely to core dump than my_exit(0) */
2371 }
2372#endif
6224f72b 2373 DEBUG_x(dump_all());
cf2782cd 2374#ifdef DEBUGGING
ecae49c0
NC
2375 if (!DEBUG_q_TEST)
2376 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2377#endif
b900a521
JH
2378 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2379 PTR2UV(thr)));
6224f72b 2380
3280af22 2381 if (PL_minus_c) {
bf4acbe4 2382#ifdef MACOS_TRADITIONAL
e69a2255
JH
2383 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2384 (gMacPerl_ErrorFormat ? "# " : ""),
2385 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2386#else
bf49b057 2387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2388#endif
6224f72b
GS
2389 my_exit(0);
2390 }
3280af22 2391 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2392 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2393 if (PL_initav)
2394 call_list(oldscope, PL_initav);
6224f72b
GS
2395 }
2396
2397 /* do it */
2398
3280af22 2399 if (PL_restartop) {
533c011a 2400 PL_op = PL_restartop;
3280af22 2401 PL_restartop = 0;
cea2e8a9 2402 CALLRUNOPS(aTHX);
6224f72b 2403 }
3280af22
NIS
2404 else if (PL_main_start) {
2405 CvDEPTH(PL_main_cv) = 1;
533c011a 2406 PL_op = PL_main_start;
cea2e8a9 2407 CALLRUNOPS(aTHX);
6224f72b 2408 }
f6b3007c
JH
2409 my_exit(0);
2410 /* NOTREACHED */
6224f72b
GS
2411}
2412
954c1994 2413/*
ccfc67b7
JH
2414=head1 SV Manipulation Functions
2415
954c1994
GS
2416=for apidoc p||get_sv
2417
2418Returns the SV of the specified Perl scalar. If C<create> is set and the
2419Perl variable does not exist then it will be created. If C<create> is not
2420set and the variable does not exist then NULL is returned.
2421
2422=cut
2423*/
2424
6224f72b 2425SV*
864dbfa3 2426Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2427{
2428 GV *gv;
6224f72b
GS
2429 gv = gv_fetchpv(name, create, SVt_PV);
2430 if (gv)
2431 return GvSV(gv);
a0714e2c 2432 return NULL;
6224f72b
GS
2433}
2434
954c1994 2435/*
ccfc67b7
JH
2436=head1 Array Manipulation Functions
2437
954c1994
GS
2438=for apidoc p||get_av
2439
2440Returns the AV of the specified Perl array. If C<create> is set and the
2441Perl variable does not exist then it will be created. If C<create> is not
2442set and the variable does not exist then NULL is returned.
2443
2444=cut
2445*/
2446
6224f72b 2447AV*
864dbfa3 2448Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2449{
c4420975 2450 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2451 if (create)
2452 return GvAVn(gv);
2453 if (gv)
2454 return GvAV(gv);
7d49f689 2455 return NULL;
6224f72b
GS
2456}
2457
954c1994 2458/*
ccfc67b7
JH
2459=head1 Hash Manipulation Functions
2460
954c1994
GS
2461=for apidoc p||get_hv
2462
2463Returns the HV of the specified Perl hash. If C<create> is set and the
2464Perl variable does not exist then it will be created. If C<create> is not
2465set and the variable does not exist then NULL is returned.
2466
2467=cut
2468*/
2469
6224f72b 2470HV*
864dbfa3 2471Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2472{
890ce7af 2473 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2474 if (create)
2475 return GvHVn(gv);
2476 if (gv)
2477 return GvHV(gv);
5c284bb0 2478 return NULL;
a0d0e21e
LW
2479}
2480
954c1994 2481/*
ccfc67b7
JH
2482=head1 CV Manipulation Functions
2483
954c1994
GS
2484=for apidoc p||get_cv
2485
2486Returns the CV of the specified Perl subroutine. If C<create> is set and
2487the Perl subroutine does not exist then it will be declared (which has the
2488same effect as saying C<sub name;>). If C<create> is not set and the
2489subroutine does not exist then NULL is returned.
2490
2491=cut
2492*/
2493
a0d0e21e 2494CV*
864dbfa3 2495Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2496{
c4420975 2497 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2498 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2499 /* XXX this is probably not what they think they're getting.
2500 * It has the same effect as "sub name;", i.e. just a forward
2501 * declaration! */
8ebc5c01 2502 if (create && !GvCVu(gv))
774d564b 2503 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2504 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2505 NULL, NULL);
a0d0e21e 2506 if (gv)
8ebc5c01 2507 return GvCVu(gv);
601f1833 2508 return NULL;
a0d0e21e
LW
2509}
2510
79072805
LW
2511/* Be sure to refetch the stack pointer after calling these routines. */
2512
954c1994 2513/*
ccfc67b7
JH
2514
2515=head1 Callback Functions
2516
954c1994
GS
2517=for apidoc p||call_argv
2518
2519Performs a callback to the specified Perl sub. See L<perlcall>.
2520
2521=cut
2522*/
2523
a0d0e21e 2524I32
8f42b153 2525Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2526
8ac85365
NIS
2527 /* See G_* flags in cop.h */
2528 /* null terminated arg list */
8990e307 2529{
97aff369 2530 dVAR;
a0d0e21e 2531 dSP;
8990e307 2532
924508f0 2533 PUSHMARK(SP);
a0d0e21e 2534 if (argv) {
8990e307 2535 while (*argv) {
a0d0e21e 2536 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2537 argv++;
2538 }
a0d0e21e 2539 PUTBACK;
8990e307 2540 }
864dbfa3 2541 return call_pv(sub_name, flags);
8990e307
LW
2542}
2543
954c1994
GS
2544/*
2545=for apidoc p||call_pv
2546
2547Performs a callback to the specified Perl sub. See L<perlcall>.
2548
2549=cut
2550*/
2551
a0d0e21e 2552I32
864dbfa3 2553Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2554 /* name of the subroutine */
2555 /* See G_* flags in cop.h */
a0d0e21e 2556{
864dbfa3 2557 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2558}
2559
954c1994
GS
2560/*
2561=for apidoc p||call_method
2562
2563Performs a callback to the specified Perl method. The blessed object must
2564be on the stack. See L<perlcall>.
2565
2566=cut
2567*/
2568
a0d0e21e 2569I32
864dbfa3 2570Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2571 /* name of the subroutine */
2572 /* See G_* flags in cop.h */
a0d0e21e 2573{
968b3946 2574 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2575}
2576
2577/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2578/*
2579=for apidoc p||call_sv
2580
2581Performs a callback to the Perl sub whose name is in the SV. See
2582L<perlcall>.
2583
2584=cut
2585*/
2586
a0d0e21e 2587I32
864dbfa3 2588Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2589 /* See G_* flags in cop.h */
a0d0e21e 2590{
27da23d5 2591 dVAR; dSP;
a0d0e21e 2592 LOGOP myop; /* fake syntax tree node */
968b3946 2593 UNOP method_op;
aa689395 2594 I32 oldmark;
8ea43dc8 2595 VOL I32 retval = 0;
a0d0e21e 2596 I32 oldscope;
54310121 2597 bool oldcatch = CATCH_GET;
6224f72b 2598 int ret;
c4420975 2599 OP* const oldop = PL_op;
db36c5a1 2600 dJMPENV;
1e422769 2601
a0d0e21e
LW
2602 if (flags & G_DISCARD) {
2603 ENTER;
2604 SAVETMPS;
2605 }
2606
aa689395 2607 Zero(&myop, 1, LOGOP);
5f66b61c 2608 myop.op_next = NULL;
f51d4af5 2609 if (!(flags & G_NOARGS))
aa689395 2610 myop.op_flags |= OPf_STACKED;
54310121 2611 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2612 (flags & G_ARRAY) ? OPf_WANT_LIST :
2613 OPf_WANT_SCALAR);
462e5cf6 2614 SAVEOP();
533c011a 2615 PL_op = (OP*)&myop;
aa689395 2616
3280af22
NIS
2617 EXTEND(PL_stack_sp, 1);
2618 *++PL_stack_sp = sv;
aa689395 2619 oldmark = TOPMARK;
3280af22 2620 oldscope = PL_scopestack_ix;
a0d0e21e 2621
3280af22 2622 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2623 /* Handle first BEGIN of -d. */
3280af22 2624 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2625 /* Try harder, since this may have been a sighandler, thus
2626 * curstash may be meaningless. */
3280af22 2627 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2628 && !(flags & G_NODEBUG))
533c011a 2629 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2630
968b3946
GS
2631 if (flags & G_METHOD) {
2632 Zero(&method_op, 1, UNOP);
2633 method_op.op_next = PL_op;
2634 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2635 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2636 PL_op = (OP*)&method_op;
968b3946
GS
2637 }
2638
312caa8e 2639 if (!(flags & G_EVAL)) {
0cdb2077 2640 CATCH_SET(TRUE);
d6f07c05 2641 CALL_BODY_SUB((OP*)&myop);
312caa8e 2642 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2643 CATCH_SET(oldcatch);
312caa8e
CS
2644 }
2645 else {
d78bda3d 2646 myop.op_other = (OP*)&myop;
3280af22 2647 PL_markstack_ptr--;
edb2152a 2648 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2649 PL_markstack_ptr++;
a0d0e21e 2650
14dd3ad8 2651 JMPENV_PUSH(ret);
edb2152a 2652
6224f72b
GS
2653 switch (ret) {
2654 case 0:
14dd3ad8 2655 redo_body:
d6f07c05 2656 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2657 retval = PL_stack_sp - (PL_stack_base + oldmark);
2658 if (!(flags & G_KEEPERR))
c69006e4 2659 sv_setpvn(ERRSV,"",0);
a0d0e21e 2660 break;
6224f72b 2661 case 1:
f86702cc 2662 STATUS_ALL_FAILURE;
a0d0e21e 2663 /* FALL THROUGH */
6224f72b 2664 case 2:
a0d0e21e 2665 /* my_exit() was called */
3280af22 2666 PL_curstash = PL_defstash;
a0d0e21e 2667 FREETMPS;
14dd3ad8 2668 JMPENV_POP;
cc3604b1 2669 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2670 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2671 my_exit_jump();
a0d0e21e 2672 /* NOTREACHED */
6224f72b 2673 case 3:
3280af22 2674 if (PL_restartop) {
533c011a 2675 PL_op = PL_restartop;
3280af22 2676 PL_restartop = 0;
312caa8e 2677 goto redo_body;
a0d0e21e 2678 }
3280af22 2679 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2680 if (flags & G_ARRAY)
2681 retval = 0;
2682 else {
2683 retval = 1;
3280af22 2684 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2685 }
312caa8e 2686 break;
a0d0e21e 2687 }
a0d0e21e 2688
edb2152a
NC
2689 if (PL_scopestack_ix > oldscope)
2690 delete_eval_scope();
14dd3ad8 2691 JMPENV_POP;
a0d0e21e 2692 }
1e422769 2693
a0d0e21e 2694 if (flags & G_DISCARD) {
3280af22 2695 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2696 retval = 0;
2697 FREETMPS;
2698 LEAVE;
2699 }
533c011a 2700 PL_op = oldop;
a0d0e21e
LW
2701 return retval;
2702}
2703
6e72f9df 2704/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2705
954c1994
GS
2706/*
2707=for apidoc p||eval_sv
2708
2709Tells Perl to C<eval> the string in the SV.
2710
2711=cut
2712*/
2713
a0d0e21e 2714I32
864dbfa3 2715Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2716
8ac85365 2717 /* See G_* flags in cop.h */
a0d0e21e 2718{
97aff369 2719 dVAR;
924508f0 2720 dSP;
a0d0e21e 2721 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2722 VOL I32 oldmark = SP - PL_stack_base;
2723 VOL I32 retval = 0;
6224f72b 2724 int ret;
c4420975 2725 OP* const oldop = PL_op;
db36c5a1 2726 dJMPENV;
84902520 2727
4633a7c4
LW
2728 if (flags & G_DISCARD) {
2729 ENTER;
2730 SAVETMPS;
2731 }
2732
462e5cf6 2733 SAVEOP();
533c011a
NIS
2734 PL_op = (OP*)&myop;
2735 Zero(PL_op, 1, UNOP);
3280af22
NIS
2736 EXTEND(PL_stack_sp, 1);
2737 *++PL_stack_sp = sv;
79072805 2738
4633a7c4
LW
2739 if (!(flags & G_NOARGS))
2740 myop.op_flags = OPf_STACKED;
5f66b61c 2741 myop.op_next = NULL;
6e72f9df 2742 myop.op_type = OP_ENTEREVAL;
54310121 2743 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2744 (flags & G_ARRAY) ? OPf_WANT_LIST :
2745 OPf_WANT_SCALAR);
6e72f9df 2746 if (flags & G_KEEPERR)
2747 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2748
dedbcade
DM
2749 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2750 * before a PUSHEVAL, which corrupts the stack after a croak */
2751 TAINT_PROPER("eval_sv()");
2752
14dd3ad8 2753 JMPENV_PUSH(ret);
6224f72b
GS
2754 switch (ret) {
2755 case 0:
14dd3ad8 2756 redo_body:
d6f07c05 2757 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2758 retval = PL_stack_sp - (PL_stack_base + oldmark);
2759 if (!(flags & G_KEEPERR))
c69006e4 2760 sv_setpvn(ERRSV,"",0);
4633a7c4 2761 break;
6224f72b 2762 case 1:
f86702cc 2763 STATUS_ALL_FAILURE;
4633a7c4 2764 /* FALL THROUGH */
6224f72b 2765 case 2:
4633a7c4 2766 /* my_exit() was called */
3280af22 2767 PL_curstash = PL_defstash;
4633a7c4 2768 FREETMPS;
14dd3ad8 2769 JMPENV_POP;
cc3604b1 2770 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2771 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2772 my_exit_jump();
4633a7c4 2773 /* NOTREACHED */
6224f72b 2774 case 3:
3280af22 2775 if (PL_restartop) {
533c011a 2776 PL_op = PL_restartop;
3280af22 2777 PL_restartop = 0;
312caa8e 2778 goto redo_body;
4633a7c4 2779 }
3280af22 2780 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2781 if (flags & G_ARRAY)
2782 retval = 0;
2783 else {
2784 retval = 1;
3280af22 2785 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2786 }
312caa8e 2787 break;
4633a7c4
LW
2788 }
2789
14dd3ad8 2790 JMPENV_POP;
4633a7c4 2791 if (flags & G_DISCARD) {
3280af22 2792 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2793 retval = 0;
2794 FREETMPS;
2795 LEAVE;
2796 }
533c011a 2797 PL_op = oldop;
4633a7c4
LW
2798 return retval;
2799}
2800
954c1994
GS
2801/*
2802=for apidoc p||eval_pv
2803
2804Tells Perl to C<eval> the given string and return an SV* result.
2805
2806=cut
2807*/
2808
137443ea 2809SV*
864dbfa3 2810Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2811{
97aff369 2812 dVAR;
137443ea 2813 dSP;
2814 SV* sv = newSVpv(p, 0);
2815
864dbfa3 2816 eval_sv(sv, G_SCALAR);
137443ea 2817 SvREFCNT_dec(sv);
2818
2819 SPAGAIN;
2820 sv = POPs;
2821 PUTBACK;
2822
2d8e6c8d 2823 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2824 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2825 }
137443ea 2826
2827 return sv;
2828}
2829
4633a7c4
LW
2830/* Require a module. */
2831
954c1994 2832/*
ccfc67b7
JH
2833=head1 Embedding Functions
2834
954c1994
GS
2835=for apidoc p||require_pv
2836
7d3fb230
BS
2837Tells Perl to C<require> the file named by the string argument. It is
2838analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2839implemented that way; consider using load_module instead.
954c1994 2840
7d3fb230 2841=cut */
954c1994 2842
4633a7c4 2843void
864dbfa3 2844Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2845{
97aff369 2846 dVAR;
d3acc0f7 2847 dSP;
97aff369 2848 SV* sv;
e788e7d3 2849 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2850 PUTBACK;
be41e5d9
NC
2851 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2852 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2853 SPAGAIN;
2854 POPSTACK;
79072805
LW
2855}
2856
79072805 2857void
e1ec3a88 2858Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2859{
71315bf2 2860 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2861
c4420975 2862 if (gv)
14befaf4 2863 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2864}
2865
76e3520e 2866STATIC void
e1ec3a88 2867S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2868{
ab821d7f 2869 /* This message really ought to be max 23 lines.
75c72d73 2870 * Removed -h because the user already knows that option. Others? */
fb73857a 2871
27da23d5 2872 static const char * const usage_msg[] = {
aefc56c5
SF
2873"-0[octal] specify record separator (\\0, if no argument)",
2874"-A[mod][=pattern] activate all/given assertions",
2875"-a autosplit mode with -n or -p (splits $_ into @F)",
2876"-C[number/list] enables the listed Unicode features",
2877"-c check syntax only (runs BEGIN and CHECK blocks)",
2878"-d[:debugger] run program under debugger",
2879"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2880"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2881"-E program like -e, but enables all optional features",
aefc56c5 2882"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2883"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2884"-i[extension] edit <> files in place (makes backup if extension supplied)",
2885"-Idirectory specify @INC/#include directory (several -I's allowed)",
2886"-l[octal] enable line ending processing, specifies line terminator",
2887"-[mM][-]module execute \"use/no module...\" before executing program",
2888"-n assume \"while (<>) { ... }\" loop around program",
2889"-p assume loop like -n but print line also, like sed",
2890"-P run program through C preprocessor before compilation",
2891"-s enable rudimentary parsing for switches after programfile",
2892"-S look for programfile using PATH environment variable",
2893"-t enable tainting warnings",
2894"-T enable tainting checks",
2895"-u dump core after parsing program",
2896"-U allow unsafe operations",
2897"-v print version, subversion (includes VERY IMPORTANT perl info)",
2898"-V[:variable] print configuration summary (or a single Config.pm variable)",
2899"-w enable many useful warnings (RECOMMENDED)",
2900"-W enable all warnings",
2901"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2902"-X disable all warnings",
fb73857a 2903"\n",
2904NULL
2905};
27da23d5 2906 const char * const *p = usage_msg;
fb73857a 2907
b0e47665
GS
2908 PerlIO_printf(PerlIO_stdout(),
2909 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2910 name);
fb73857a 2911 while (*p)
b0e47665 2912 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2913}
2914
b4ab917c
DM
2915/* convert a string of -D options (or digits) into an int.
2916 * sets *s to point to the char after the options */
2917
2918#ifdef DEBUGGING
2919int
e1ec3a88 2920Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2921{
27da23d5 2922 static const char * const usage_msgd[] = {
e6e64d9b
JC
2923 " Debugging flag values: (see also -d)",
2924 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2925 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2926 " l Context (loop) stack processing",
2927 " t Trace execution",
2928 " o Method and overloading resolution",
2929 " c String/numeric conversions",
2930 " P Print profiling info, preprocessor command for -P, source file input state",
2931 " m Memory allocation",
2932 " f Format processing",
2933 " r Regular expression parsing and execution",
2934 " x Syntax tree dump",
3679267a 2935 " u Tainting checks",
e6e64d9b
JC
2936 " H Hash dump -- usurps values()",
2937 " X Scratchpad allocation",
2938 " D Cleaning up",
2939 " S Thread synchronization",
2940 " T Tokenising",
2941 " R Include reference counts of dumped variables (eg when using -Ds)",
2942 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2943 " v Verbose: use in conjunction with other flags",
2944 " C Copy On Write",
2945 " A Consistency checks on internal structures",
3679267a 2946 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2947 NULL
2948 };
b4ab917c
DM
2949 int i = 0;
2950 if (isALPHA(**s)) {
2951 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2952 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2953
2954 for (; isALNUM(**s); (*s)++) {
c4420975 2955 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2956 if (d)
2957 i |= 1 << (d - debopts);
2958 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2959 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2960 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2961 }
2962 }
e6e64d9b 2963 else if (isDIGIT(**s)) {
b4ab917c
DM
2964 i = atoi(*s);
2965 for (; isALNUM(**s); (*s)++) ;
2966 }
ddcf8bc1 2967 else if (givehelp) {
06e869a4 2968 const char *const *p = usage_msgd;
e6e64d9b
JC
2969 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2970 }
b4ab917c
DM
2971# ifdef EBCDIC
2972 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2973 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2974 "-Dp not implemented on this platform\n");
2975# endif
2976 return i;
2977}
2978#endif
2979
79072805
LW
2980/* This routine handles any switches that can be given during run */
2981
2982char *
97bd5664 2983Perl_moreswitches(pTHX_ char *s)
79072805 2984{
27da23d5 2985 dVAR;
84c133a0 2986 UV rschar;
79072805
LW
2987
2988 switch (*s) {
2989 case '0':
a863c7d1 2990 {
f2095865 2991 I32 flags = 0;
a3b680e6 2992 STRLEN numlen;
f2095865
JH
2993
2994 SvREFCNT_dec(PL_rs);
2995 if (s[1] == 'x' && s[2]) {
a3b680e6 2996 const char *e = s+=2;
f2095865
JH
2997 U8 *tmps;
2998
a3b680e6
AL
2999 while (*e)
3000 e++;
f2095865
JH
3001 numlen = e - s;
3002 flags = PERL_SCAN_SILENT_ILLDIGIT;
3003 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3004 if (s + numlen < e) {
3005 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3006 numlen = 0;
3007 s--;
3008 }
396482e1 3009 PL_rs = newSVpvs("");
c5661c80 3010 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3011 tmps = (U8*)SvPVX(PL_rs);
3012 uvchr_to_utf8(tmps, rschar);
3013 SvCUR_set(PL_rs, UNISKIP(rschar));
3014 SvUTF8_on(PL_rs);
3015 }
3016 else {
3017 numlen = 4;
3018 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3019 if (rschar & ~((U8)~0))
3020 PL_rs = &PL_sv_undef;
3021 else if (!rschar && numlen >= 2)
396482e1 3022 PL_rs = newSVpvs("");
f2095865
JH
3023 else {
3024 char ch = (char)rschar;
3025 PL_rs = newSVpvn(&ch, 1);
3026 }
3027 }
800633c3 3028 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3029 return s + numlen;
a863c7d1 3030 }
46487f74 3031 case 'C':
a05d7ebb 3032 s++;
dd374669 3033 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3034 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3035 PL_utf8cache = -1;
46487f74 3036 return s;
2304df62 3037 case 'F':
3280af22 3038 PL_minus_F = TRUE;
ebce5377
RGS
3039 PL_splitstr = ++s;
3040 while (*s && !isSPACE(*s)) ++s;
e49e380e 3041 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3042 return s;
79072805 3043 case 'a':
3280af22 3044 PL_minus_a = TRUE;
79072805
LW
3045 s++;
3046 return s;
3047 case 'c':
3280af22 3048 PL_minus_c = TRUE;
79072805
LW
3049 s++;
3050 return s;
3051 case 'd':
97bd5664 3052 forbid_setid('d', -1);
4633a7c4 3053 s++;
2cbb2ee1
RGS
3054
3055 /* -dt indicates to the debugger that threads will be used */
3056 if (*s == 't' && !isALNUM(s[1])) {
3057 ++s;
3058 my_setenv("PERL5DB_THREADED", "1");
3059 }
3060
70c94a19
RR
3061 /* The following permits -d:Mod to accepts arguments following an =
3062 in the fashion that -MSome::Mod does. */
3063 if (*s == ':' || *s == '=') {
06b5626a 3064 const char *start;
396482e1 3065 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3066 start = ++s;
3067 /* We now allow -d:Module=Foo,Bar */
3068 while(isALNUM(*s) || *s==':') ++s;
3069 if (*s != '=')
3070 sv_catpv(sv, start);
3071 else {
3072 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3073 /* Don't use NUL as q// delimiter here, this string goes in the
3074 * environment. */
3075 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3076 }
4633a7c4 3077 s += strlen(s);
184f32ec 3078 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3079 }
ed094faf 3080 if (!PL_perldb) {
3280af22 3081 PL_perldb = PERLDB_ALL;
a0d0e21e 3082 init_debugger();
ed094faf 3083 }
79072805
LW
3084 return s;
3085 case 'D':
0453d815 3086 {
79072805 3087#ifdef DEBUGGING
97bd5664 3088 forbid_setid('D', -1);
b4ab917c 3089 s++;
dd374669 3090 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3091#else /* !DEBUGGING */
0453d815 3092 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3093 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3094 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3095 for (s++; isALNUM(*s); s++) ;
79072805 3096#endif
79072805 3097 return s;
0453d815 3098 }
4633a7c4 3099 case 'h':
ac27b0f5 3100 usage(PL_origargv[0]);
7ca617d0 3101 my_exit(0);
79072805 3102 case 'i':
43c5f42d 3103 Safefree(PL_inplace);
c030f24b
GH
3104#if defined(__CYGWIN__) /* do backup extension automagically */
3105 if (*(s+1) == '\0') {
c86a4f2e 3106 PL_inplace = savepvs(".bak");
c030f24b
GH
3107 return s+1;
3108 }
3109#endif /* __CYGWIN__ */
5ef5d758 3110 {
d4c19fe8 3111 const char * const start = ++s;
5ef5d758
NC
3112 while (*s && !isSPACE(*s))
3113 ++s;
3114
3115 PL_inplace = savepvn(start, s - start);
3116 }
7b8d334a 3117 if (*s) {
5ef5d758 3118 ++s;
7b8d334a 3119 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3120 s++;
7b8d334a 3121 }
fb73857a 3122 return s;
4e49a025 3123 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3124 forbid_setid('I', -1);
fb73857a 3125 ++s;
3126 while (*s && isSPACE(*s))
3127 ++s;
3128 if (*s) {
774d564b 3129 char *e, *p;
0df16ed7
GS
3130 p = s;
3131 /* ignore trailing spaces (possibly followed by other switches) */
3132 do {
3133 for (e = p; *e && !isSPACE(*e); e++) ;
3134 p = e;
3135 while (isSPACE(*p))
3136 p++;
3137 } while (*p && *p != '-');
3138 e = savepvn(s, e-s);
88fe16b2 3139 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3140 Safefree(e);
3141 s = p;
3142 if (*s == '-')
3143 s++;
79072805
LW
3144 }
3145 else
a67e862a 3146 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3147 return s;
79072805 3148 case 'l':
3280af22 3149 PL_minus_l = TRUE;
79072805 3150 s++;
7889fe52
NIS
3151 if (PL_ors_sv) {
3152 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3153 PL_ors_sv = NULL;
7889fe52 3154 }
79072805 3155 if (isDIGIT(*s)) {
53305cf1 3156 I32 flags = 0;
a3b680e6 3157 STRLEN numlen;
396482e1 3158 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3159 numlen = 3 + (*s == '0');
3160 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3161 s += numlen;
3162 }
3163 else {
8bfdd7d9 3164 if (RsPARA(PL_rs)) {
396482e1 3165 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3166 }
3167 else {
8bfdd7d9 3168 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3169 }
79072805
LW
3170 }
3171 return s;
06492da6 3172 case 'A':
97bd5664 3173 forbid_setid('A', -1);
930366bd
RGS
3174 if (!PL_preambleav)
3175 PL_preambleav = newAV();
aefc56c5
SF
3176 s++;
3177 {
44f8325f 3178 char * const start = s;
396482e1 3179 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3180 while(isALNUM(*s) || *s == ':') ++s;
3181 if (s != start) {
396482e1 3182 sv_catpvs(sv, "::");
aefc56c5
SF
3183 sv_catpvn(sv, start, s-start);
3184 }
3185 if (*s == '=') {
0c5a913d 3186 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3187 s+=strlen(s);
3188 }
3189 else if (*s != '\0') {
551405c4 3190 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3191 }
06492da6 3192 av_push(PL_preambleav, sv);
aefc56c5 3193 return s;
06492da6 3194 }
1a30305b 3195 case 'M':
97bd5664 3196 forbid_setid('M', -1); /* XXX ? */
1a30305b 3197 /* FALL THROUGH */
3198 case 'm':
97bd5664 3199 forbid_setid('m', -1); /* XXX ? */
1a30305b 3200 if (*++s) {
a5f75d66 3201 char *start;
11343788 3202 SV *sv;
e1ec3a88 3203 const char *use = "use ";
a5f75d66 3204 /* -M-foo == 'no foo' */
d0043bd1
NC
3205 /* Leading space on " no " is deliberate, to make both
3206 possibilities the same length. */
3207 if (*s == '-') { use = " no "; ++s; }
3208 sv = newSVpvn(use,4);
a5f75d66 3209 start = s;
1a30305b 3210 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd 3211 while(isALNUM(*s) || *s==':') ++s;
3212 if (*s != '=') {
11343788 3213 sv_catpv(sv, start);
c07a80fd 3214 if (*(start-1) == 'm') {
3215 if (*s != '\0')
cea2e8a9 3216 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3217 sv_catpvs( sv, " ()");
c07a80fd 3218 }
3219 } else {
6df41af2 3220 if (s == start)
be98fb35
GS
3221 Perl_croak(aTHX_ "Module name required with -%c option",
3222 s[-1]);
11343788 3223 sv_catpvn(sv, start, s-start);
396482e1
GA
3224 sv_catpvs(sv, " split(/,/,q");
3225 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3226 sv_catpv(sv, ++s);
396482e1 3227 sv_catpvs(sv, "\0)");
c07a80fd 3228 }
1a30305b 3229 s += strlen(s);
5c831c24 3230 if (!PL_preambleav)
3280af22
NIS
3231 PL_preambleav = newAV();
3232 av_push(PL_preambleav, sv);
1a30305b 3233 }
3234 else
9e81e6a1 3235 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3236 return s;
79072805 3237 case 'n':
3280af22 3238 PL_minus_n = TRUE;
79072805
LW
3239 s++;
3240 return s;
3241 case 'p':
3280af22 3242 PL_minus_p = TRUE;
79072805
LW
3243 s++;
3244 return s;
3245 case 's':
97bd5664 3246 forbid_setid('s', -1);
3280af22 3247 PL_doswitches = TRUE;
79072805
LW
3248 s++;
3249 return s;
6537fe72
MS
3250 case 't':
3251 if (!PL_tainting)
22f7c9c9 3252 TOO_LATE_FOR('t');
6537fe72
MS
3253 s++;
3254 return s;
463ee0b2 3255 case 'T':
3280af22 3256 if (!PL_tainting)
22f7c9c9 3257 TOO_LATE_FOR('T');
463ee0b2
LW
3258 s++;
3259 return s;
79072805 3260 case 'u':
bf4acbe4
GS
3261#ifdef MACOS_TRADITIONAL
3262 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3263#endif
3280af22 3264 PL_do_undump = TRUE;
79072805
LW
3265 s++;
3266 return s;
3267 case 'U':
3280af22 3268 PL_unsafe = TRUE;
79072805
LW
3269 s++;
3270 return s;
3271 case 'v':
d7aa5382 3272 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3273 upg_version(PL_patchlevel);
8e9464f1 3274#if !defined(DGUX)
b0e47665 3275 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3276 Perl_form(aTHX_ "\nThis is perl, %"SVf
3277#ifdef PERL_PATCHNUM
3278 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3279#endif
3280 " built for %s",
95b63a38
JH
3281 (void*)vstringify(PL_patchlevel),
3282 ARCHNAME));
8e9464f1
JH
3283#else /* DGUX */
3284/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3285 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3286 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3287 vstringify(PL_patchlevel)));
8e9464f1
JH
3288 PerlIO_printf(PerlIO_stdout(),
3289 Perl_form(aTHX_ " built under %s at %s %s\n",
3290 OSNAME, __DATE__, __TIME__));
3291 PerlIO_printf(PerlIO_stdout(),
3292 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3293 OSVERS));
8e9464f1
JH
3294#endif /* !DGUX */
3295
fb73857a 3296#if defined(LOCAL_PATCH_COUNT)
3297 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3298 PerlIO_printf(PerlIO_stdout(),
3299 "\n(with %d registered patch%s, "
3300 "see perl -V for more detail)",
bb7a0f54 3301 LOCAL_PATCH_COUNT,
b0e47665 3302 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3303#endif
1a30305b 3304
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3306 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3307#ifdef MACOS_TRADITIONAL
3308 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3309 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3310 "maintained by Chris Nandor\n");
eae9c151 3311#endif
79072805 3312#ifdef MSDOS
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3315#endif
3316#ifdef DJGPP
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3319 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3320#endif
79072805 3321#ifdef OS2
b0e47665
GS
3322 PerlIO_printf(PerlIO_stdout(),
3323 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3324 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3325#endif
79072805 3326#ifdef atarist
b0e47665
GS
3327 PerlIO_printf(PerlIO_stdout(),
3328 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3329#endif
a3f9223b 3330#ifdef __BEOS__
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3333#endif
1d84e8df 3334#ifdef MPE
b0e47665 3335 PerlIO_printf(PerlIO_stdout(),
e583a879 3336 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3337#endif
9d116dd7 3338#ifdef OEMVS
b0e47665
GS
3339 PerlIO_printf(PerlIO_stdout(),
3340 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3341#endif
495c5fdc 3342#ifdef __VOS__
b0e47665 3343 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3344 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3345#endif
092bebab 3346#ifdef __OPEN_VM
b0e47665
GS
3347 PerlIO_printf(PerlIO_stdout(),
3348 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3349#endif
a1a0e61e 3350#ifdef POSIX_BC
b0e47665
GS
3351 PerlIO_printf(PerlIO_stdout(),
3352 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3353#endif
61ae2fbf 3354#ifdef __MINT__
b0e47665
GS
3355 PerlIO_printf(PerlIO_stdout(),
3356 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3357#endif
f83d2536 3358#ifdef EPOC
b0e47665 3359 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3360 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3361#endif
e1caacb4 3362#ifdef UNDER_CE
b475b3e6
JH
3363 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3364 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3365 wce_hitreturn();
3366#endif
a0fd4948 3367#ifdef __SYMBIAN32__
27da23d5
JH
3368 PerlIO_printf(PerlIO_stdout(),
3369 "Symbian port by Nokia, 2004-2005\n");
3370#endif
baed7233
DL
3371#ifdef BINARY_BUILD_NOTICE
3372 BINARY_BUILD_NOTICE;
3373#endif
b0e47665
GS
3374 PerlIO_printf(PerlIO_stdout(),
3375 "\n\
79072805 3376Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3377GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3378Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3379this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3380Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3381 my_exit(0);
79072805 3382 case 'w':
599cee73 3383 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3384 PL_dowarn |= G_WARN_ON;
599cee73
PM
3385 s++;
3386 return s;
3387 case 'W':
ac27b0f5 3388 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3389 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3390 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3391 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3392 s++;
3393 return s;
3394 case 'X':
ac27b0f5 3395 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3396 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3397 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3398 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3399 s++;
3400 return s;
a0d0e21e 3401 case '*':
79072805
LW
3402 case ' ':
3403 if (s[1] == '-') /* Additional switches on #! line. */
3404 return s+2;
3405 break;
a0d0e21e 3406 case '-':
79072805 3407 case 0:
51882d45 3408#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3409 case '\r':
3410#endif
79072805
LW
3411 case '\n':
3412 case '\t':
3413 break;
aa689395 3414#ifdef ALTERNATE_SHEBANG
3415 case 'S': /* OS/2 needs -S on "extproc" line. */
3416 break;
3417#endif
a0d0e21e 3418 case 'P':
3280af22 3419 if (PL_preprocess)
a0d0e21e
LW
3420 return s+1;
3421 /* FALL THROUGH */
79072805 3422 default:
cea2e8a9 3423 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3424 }
bd61b366 3425 return NULL;
79072805
LW
3426}
3427
3428/* compliments of Tom Christiansen */
3429
3430/* unexec() can be found in the Gnu emacs distribution */
ee580363 3431/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3432
3433void
864dbfa3 3434Perl_my_unexec(pTHX)
79072805 3435{
b37c2d43 3436 PERL_UNUSED_CONTEXT;
79072805 3437#ifdef UNEXEC
b37c2d43
AL
3438 SV * prog = newSVpv(BIN_EXP, 0);
3439 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3440 int status = 1;
79072805
LW
3441 extern int etext;
3442
396482e1 3443 sv_catpvs(prog, "/perl");
396482e1 3444 sv_catpvs(file, ".perldump");
79072805 3445
ee580363
GS
3446 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3447 /* unexec prints msg to stderr in case of failure */
6ad3d225 3448 PerlProc_exit(status);
79072805 3449#else
a5f75d66
AD
3450# ifdef VMS
3451# include <lib$routines.h>
3452 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3453# elif defined(WIN32) || defined(__CYGWIN__)
3454 Perl_croak(aTHX_ "dump is not supported");
aa689395 3455# else
79072805 3456 ABORT(); /* for use with undump */
aa689395 3457# endif
a5f75d66 3458#endif
79072805
LW
3459}
3460
cb68f92d
GS
3461/* initialize curinterp */
3462STATIC void
cea2e8a9 3463S_init_interp(pTHX)
cb68f92d 3464{
97aff369 3465 dVAR;
acfe0abc
GS
3466#ifdef MULTIPLICITY
3467# define PERLVAR(var,type)
3468# define PERLVARA(var,n,type)
3469# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3470# define PERLVARI(var,type,init) aTHX->var = init;
3471# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3472# else
acfe0abc
GS
3473# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3474# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3475# endif
acfe0abc 3476# include "intrpvar.h"
b7f7fff6 3477# include "thrdvar.h"
acfe0abc
GS
3478# undef PERLVAR
3479# undef PERLVARA
3480# undef PERLVARI
3481# undef PERLVARIC
3482#else
3483# define PERLVAR(var,type)
3484# define PERLVARA(var,n,type)
3485# define PERLVARI(var,type,init) PL_##var = init;
3486# define PERLVARIC(var,type,init) PL_##var = init;
3487# include "intrpvar.h"
b7f7fff6 3488# include "thrdvar.h"
acfe0abc
GS
3489# undef PERLVAR
3490# undef PERLVARA
3491# undef PERLVARI
3492# undef PERLVARIC
cb68f92d
GS
3493#endif
3494
46ab3289
NC
3495 /* As these are inside a structure, PERLVARI isn't capable of initialising
3496 them */
6c3f0a89
NC
3497 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3498 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3499}
3500
76e3520e 3501STATIC void
cea2e8a9 3502S_init_main_stash(pTHX)
79072805 3503{
97aff369 3504 dVAR;
463ee0b2 3505 GV *gv;
6e72f9df 3506
3280af22 3507 PL_curstash = PL_defstash = newHV();
23579a14
NC
3508 /* We know that the string "main" will be in the global shared string
3509 table, so it's a small saving to use it rather than allocate another
3510 8 bytes. */