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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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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
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110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
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153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
GS
164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
32e30700
GS
174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
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176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
32e30700
GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
32e30700
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186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
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191=head1 Embedding Functions
192
954c1994
GS
193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
96a5add6 231 PERL_UNUSED_CONTEXT;
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
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241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
3280af22
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250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 252
3280af22 253 sv_setpv(&PL_sv_no,PL_No);
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254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. */
256 SvIV(&PL_sv_no);
3280af22
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257 SvNV(&PL_sv_no);
258 SvREADONLY_on(&PL_sv_no);
259 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 260
3280af22 261 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 262 SvIV(&PL_sv_yes);
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NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
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266
267 SvREADONLY_on(&PL_sv_placeholder);
268 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 269 }
79072805 270
8aad04aa 271 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 272#ifdef PERL_USES_PL_PIDSTATUS
3280af22 273 PL_pidstatus = newHV();
ca0c25f6 274#endif
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275 }
276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
3280af22 282 PL_lex_state = LEX_NOTPARSING;
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
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294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
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300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
48c6b404 303 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
304 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
305 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
13137afc
AB
307 PL_regex_padav = newAV();
308 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
309 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
2f42fcb0
JH
328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e6830b13
NC
347 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
348 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
27da23d5 363 (void) SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
5336380d
NC
392#ifdef PERL_MAD
393 PL_curforce = -1;
394#endif
395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
bf357333 429 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
430 return;
431
432 PerlIO_flush(Perl_debug_log);
433
bf357333
NC
434 /* All these shenanigans are to pass a file descriptor over to our child for
435 it to dump out to. We can't let it hold open the file descriptor when it
436 forks, as the file descriptor it will dump to can turn out to be one end
437 of pipe that some other process will wait on for EOF. (So as it would
438 be open, the wait would be forever. */
439
440 msg.msg_control = control.control;
441 msg.msg_controllen = sizeof(control.control);
442 /* We're a connected socket so we don't need a destination */
443 msg.msg_name = NULL;
444 msg.msg_namelen = 0;
445 msg.msg_iov = vec;
808ad2d0 446 msg.msg_iovlen = 1;
bf357333
NC
447
448 cmptr = CMSG_FIRSTHDR(&msg);
449 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
450 cmptr->cmsg_level = SOL_SOCKET;
451 cmptr->cmsg_type = SCM_RIGHTS;
452 *((int *)CMSG_DATA(cmptr)) = 1;
453
454 vec[0].iov_base = (void*)&sv;
455 vec[0].iov_len = sizeof(sv);
456 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
457
458 if(got < 0) {
bf357333 459 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
460 abort();
461 }
bf357333
NC
462 if(got < sizeof(sv)) {
463 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
464 abort();
465 }
466
808ad2d0
NC
467 /* Return protocol is
468 int: errno value
469 unsigned char: length of location string (0 for empty)
470 unsigned char*: string (not terminated)
471 */
472 vec[0].iov_base = (void*)&returned_errno;
473 vec[0].iov_len = sizeof(returned_errno);
474 vec[1].iov_base = buffer;
475 vec[1].iov_len = 1;
476
477 got = readv(sock, vec, 2);
41e4abd8
NC
478
479 if(got < 0) {
480 perror("Debug leaking scalars parent read failed");
808ad2d0 481 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
482 abort();
483 }
808ad2d0 484 if(got < sizeof(returned_errno) + 1) {
41e4abd8 485 perror("Debug leaking scalars parent short read");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
489
808ad2d0
NC
490 if (*buffer) {
491 got = read(sock, buffer + 1, *buffer);
492 if(got < 0) {
493 perror("Debug leaking scalars parent read 2 failed");
494 PerlIO_flush(PerlIO_stderr());
495 abort();
496 }
497
498 if(got < *buffer) {
499 perror("Debug leaking scalars parent short read 2");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503 }
504
505 if (returned_errno || *buffer) {
506 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
507 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
508 returned_errno, strerror(returned_errno));
41e4abd8
NC
509 }
510}
511#endif
512
62375a60 513/*
954c1994
GS
514=for apidoc perl_destruct
515
516Shuts down a Perl interpreter. See L<perlembed>.
517
518=cut
519*/
520
31d77e54 521int
0cb96387 522perl_destruct(pTHXx)
79072805 523{
27da23d5 524 dVAR;
7c474504 525 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 526 HV *hv;
2aa47728 527#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
528 pid_t child;
529#endif
8990e307 530
96a5add6 531 PERL_UNUSED_CONTEXT;
9d4ba2ae 532
7766f137
GS
533 /* wait for all pseudo-forked children to finish */
534 PERL_WAIT_FOR_CHILDREN;
535
3280af22 536 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
537#ifdef DEBUGGING
538 {
9d4ba2ae
AL
539 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
540 if (s) {
e1ec3a88 541 const int i = atoi(s);
5f05dabc
PP
542 if (destruct_level < i)
543 destruct_level = i;
544 }
4633a7c4
LW
545 }
546#endif
547
27da23d5 548 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
549 dJMPENV;
550 int x = 0;
551
552 JMPENV_PUSH(x);
1b6737cc 553 PERL_UNUSED_VAR(x);
f3faeb53
AB
554 if (PL_endav && !PL_minus_c)
555 call_list(PL_scopestack_ix, PL_endav);
556 JMPENV_POP;
26f423df 557 }
f3faeb53 558 LEAVE;
a0d0e21e
LW
559 FREETMPS;
560
e00b64d4 561 /* Need to flush since END blocks can produce output */
f13a2bc0 562 my_fflush_all();
e00b64d4 563
62375a60
NIS
564 if (CALL_FPTR(PL_threadhook)(aTHX)) {
565 /* Threads hook has vetoed further cleanup */
37038d91 566 return STATUS_EXIT;
62375a60
NIS
567 }
568
2aa47728
NC
569#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
570 if (destruct_level != 0) {
571 /* Fork here to create a child. Our child's job is to preserve the
572 state of scalars prior to destruction, so that we can instruct it
573 to dump any scalars that we later find have leaked.
574 There's no subtlety in this code - it assumes POSIX, and it doesn't
575 fail gracefully */
576 int fd[2];
577
578 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
579 perror("Debug leaking scalars socketpair failed");
580 abort();
581 }
582
583 child = fork();
584 if(child == -1) {
585 perror("Debug leaking scalars fork failed");
586 abort();
587 }
588 if (!child) {
589 /* We are the child */
3125a5a4
NC
590 const int sock = fd[1];
591 const int debug_fd = PerlIO_fileno(Perl_debug_log);
592 int f;
808ad2d0
NC
593 const char *where;
594 /* Our success message is an integer 0, and a char 0 */
595 static const char success[sizeof(int) + 1];
3125a5a4 596
2aa47728 597 close(fd[0]);
2aa47728 598
3125a5a4
NC
599 /* We need to close all other file descriptors otherwise we end up
600 with interesting hangs, where the parent closes its end of a
601 pipe, and sits waiting for (another) child to terminate. Only
602 that child never terminates, because it never gets EOF, because
bf357333
NC
603 we also have the far end of the pipe open. We even need to
604 close the debugging fd, because sometimes it happens to be one
605 end of a pipe, and a process is waiting on the other end for
606 EOF. Normally it would be closed at some point earlier in
607 destruction, but if we happen to cause the pipe to remain open,
608 EOF never occurs, and we get an infinite hang. Hence all the
609 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
610
611 f = sysconf(_SC_OPEN_MAX);
612 if(f < 0) {
808ad2d0
NC
613 where = "sysconf failed";
614 goto abort;
3125a5a4
NC
615 }
616 while (f--) {
617 if (f == sock)
618 continue;
3125a5a4
NC
619 close(f);
620 }
621
2aa47728
NC
622 while (1) {
623 SV *target;
bf357333
NC
624 union control_un control;
625 struct msghdr msg;
626 struct iovec vec[1];
627 struct cmsghdr *cmptr;
628 ssize_t got;
629 int got_fd;
630
631 msg.msg_control = control.control;
632 msg.msg_controllen = sizeof(control.control);
633 /* We're a connected socket so we don't need a source */
634 msg.msg_name = NULL;
635 msg.msg_namelen = 0;
636 msg.msg_iov = vec;
637 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
638
639 vec[0].iov_base = (void*)&target;
640 vec[0].iov_len = sizeof(target);
641
642 got = recvmsg(sock, &msg, 0);
2aa47728
NC
643
644 if(got == 0)
645 break;
646 if(got < 0) {
808ad2d0
NC
647 where = "recv failed";
648 goto abort;
2aa47728
NC
649 }
650 if(got < sizeof(target)) {
808ad2d0
NC
651 where = "short recv";
652 goto abort;
2aa47728 653 }
bf357333 654
808ad2d0
NC
655 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
656 where = "no cmsg";
657 goto abort;
658 }
659 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
660 where = "wrong cmsg_len";
661 goto abort;
662 }
663 if(cmptr->cmsg_level != SOL_SOCKET) {
664 where = "wrong cmsg_level";
665 goto abort;
666 }
667 if(cmptr->cmsg_type != SCM_RIGHTS) {
668 where = "wrong cmsg_type";
669 goto abort;
670 }
bf357333
NC
671
672 got_fd = *(int*)CMSG_DATA(cmptr);
673 /* For our last little bit of trickery, put the file descriptor
674 back into Perl_debug_log, as if we never actually closed it
675 */
808ad2d0
NC
676 if(got_fd != debug_fd) {
677 if (dup2(got_fd, debug_fd) == -1) {
678 where = "dup2";
679 goto abort;
680 }
681 }
2aa47728 682 sv_dump(target);
bf357333 683
2aa47728
NC
684 PerlIO_flush(Perl_debug_log);
685
808ad2d0 686 got = write(sock, &success, sizeof(success));
2aa47728
NC
687
688 if(got < 0) {
808ad2d0
NC
689 where = "write failed";
690 goto abort;
2aa47728 691 }
808ad2d0
NC
692 if(got < sizeof(success)) {
693 where = "short write";
694 goto abort;
2aa47728
NC
695 }
696 }
697 _exit(0);
808ad2d0
NC
698 abort:
699 {
700 int send_errno = errno;
701 unsigned char length = (unsigned char) strlen(where);
702 struct iovec failure[3] = {
703 {(void*)&send_errno, sizeof(send_errno)},
704 {&length, 1},
705 {(void*)where, length}
706 };
707 int got = writev(sock, failure, 3);
708 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
709 in the parent if we try to read from the socketpair after the
710 child has exited, even if there was data to read.
711 So sleep a bit to give the parent a fighting chance of
712 reading the data. */
713 sleep(2);
714 _exit((got == -1) ? errno : 0);
715 }
bf357333 716 /* End of child. */
2aa47728 717 }
41e4abd8 718 PL_dumper_fd = fd[0];
2aa47728
NC
719 close(fd[1]);
720 }
721#endif
722
ff0cee69
PP
723 /* We must account for everything. */
724
725 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
726 /* Do this now, because destroying ops can cause new SVs to be generated
727 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
728 PL_curcop to point to a valid op from which the filename structure
729 member is copied. */
730 PL_curcop = &PL_compiling;
3280af22 731 if (PL_main_root) {
4e380990
DM
732 /* ensure comppad/curpad to refer to main's pad */
733 if (CvPADLIST(PL_main_cv)) {
734 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
735 }
3280af22 736 op_free(PL_main_root);
5f66b61c 737 PL_main_root = NULL;
a0d0e21e 738 }
5f66b61c 739 PL_main_start = NULL;
3280af22 740 SvREFCNT_dec(PL_main_cv);
601f1833 741 PL_main_cv = NULL;
24d3c518 742 PL_dirty = TRUE;
ff0cee69 743
13621cfb
NIS
744 /* Tell PerlIO we are about to tear things apart in case
745 we have layers which are using resources that should
746 be cleaned up now.
747 */
748
749 PerlIO_destruct(aTHX);
750
3280af22 751 if (PL_sv_objcount) {
a0d0e21e
LW
752 /*
753 * Try to destruct global references. We do this first so that the
754 * destructors and destructees still exist. Some sv's might remain.
755 * Non-referenced objects are on their own.
756 */
a0d0e21e 757 sv_clean_objs();
bf9cdc68 758 PL_sv_objcount = 0;
a0de6cf5 759 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 760 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
761 }
762
5cd24f17 763 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 764 SvREFCNT_dec(PL_warnhook);
a0714e2c 765 PL_warnhook = NULL;
3280af22 766 SvREFCNT_dec(PL_diehook);
a0714e2c 767 PL_diehook = NULL;
5cd24f17 768
4b556e6c 769 /* call exit list functions */
3280af22 770 while (PL_exitlistlen-- > 0)
acfe0abc 771 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 772
3280af22 773 Safefree(PL_exitlist);
4b556e6c 774
1c4916e5
CB
775 PL_exitlist = NULL;
776 PL_exitlistlen = 0;
777
a0d0e21e 778 if (destruct_level == 0){
8990e307 779
a0d0e21e 780 DEBUG_P(debprofdump());
ac27b0f5 781
56a2bab7
NIS
782#if defined(PERLIO_LAYERS)
783 /* No more IO - including error messages ! */
784 PerlIO_cleanup(aTHX);
785#endif
786
a0d0e21e 787 /* The exit() function will do everything that needs doing. */
37038d91 788 return STATUS_EXIT;
a0d0e21e 789 }
5dd60ef7 790
551a8b83 791 /* jettison our possibly duplicated environment */
4b647fb0
DM
792 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
793 * so we certainly shouldn't free it here
794 */
2f42fcb0 795#ifndef PERL_MICRO
4b647fb0 796#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 797 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
798#ifdef USE_ITHREADS
799 /* only main thread can free environ[0] contents */
800 && PL_curinterp == aTHX
801#endif
802 )
803 {
551a8b83
JH
804 I32 i;
805
806 for (i = 0; environ[i]; i++)
4b420006 807 safesysfree(environ[i]);
0631ea03 808
4b420006
JH
809 /* Must use safesysfree() when working with environ. */
810 safesysfree(environ);
551a8b83
JH
811
812 environ = PL_origenviron;
813 }
814#endif
2f42fcb0 815#endif /* !PERL_MICRO */
551a8b83 816
804ffa60 817 /* reset so print() ends up where we expect */
a0714e2c 818 setdefout(NULL);
804ffa60 819
5f8cb046
DM
820#ifdef USE_ITHREADS
821 /* the syntax tree is shared between clones
822 * so op_free(PL_main_root) only ReREFCNT_dec's
823 * REGEXPs in the parent interpreter
824 * we need to manually ReREFCNT_dec for the clones
825 */
826 {
827 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 828 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
829
830 while (i) {
c4420975 831 SV * const resv = ary[--i];
35061a7e
DM
832
833 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 834 /* this is PL_reg_curpm, already freed
35061a7e
DM
835 * flag is set in regexec.c:S_regtry
836 */
837 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 838 }
1cc8b4c5
AB
839 else if(SvREPADTMP(resv)) {
840 SvREPADTMP_off(resv);
841 }
a560f29b
NC
842 else if(SvIOKp(resv)) {
843 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
844 ReREFCNT_dec(re);
845 }
846 }
847 }
848 SvREFCNT_dec(PL_regex_padav);
7d49f689 849 PL_regex_padav = NULL;
5f8cb046
DM
850 PL_regex_pad = NULL;
851#endif
852
081fc587
AB
853 SvREFCNT_dec((SV*) PL_stashcache);
854 PL_stashcache = NULL;
855
5f05dabc
PP
856 /* loosen bonds of global variables */
857
3280af22
NIS
858 if(PL_rsfp) {
859 (void)PerlIO_close(PL_rsfp);
4608196e 860 PL_rsfp = NULL;
8ebc5c01
PP
861 }
862
863 /* Filters for program text */
3280af22 864 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 865 PL_rsfp_filters = NULL;
8ebc5c01
PP
866
867 /* switches */
3280af22
NIS
868 PL_preprocess = FALSE;
869 PL_minus_n = FALSE;
870 PL_minus_p = FALSE;
871 PL_minus_l = FALSE;
872 PL_minus_a = FALSE;
873 PL_minus_F = FALSE;
874 PL_doswitches = FALSE;
599cee73 875 PL_dowarn = G_WARN_OFF;
3280af22
NIS
876 PL_doextract = FALSE;
877 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
878 PL_unsafe = FALSE;
879
880 Safefree(PL_inplace);
bd61b366 881 PL_inplace = NULL;
a7cb1f99 882 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
883
884 if (PL_e_script) {
885 SvREFCNT_dec(PL_e_script);
a0714e2c 886 PL_e_script = NULL;
8ebc5c01
PP
887 }
888
bf9cdc68
RG
889 PL_perldb = 0;
890
8ebc5c01
PP
891 /* magical thingies */
892
7889fe52 893 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 894 PL_ofs_sv = NULL;
5f05dabc 895
7889fe52 896 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 897 PL_ors_sv = NULL;
8ebc5c01 898
3280af22 899 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 900 PL_rs = NULL;
dc92893f 901
d33b2eba 902 Safefree(PL_osname); /* $^O */
bd61b366 903 PL_osname = NULL;
5f05dabc 904
3280af22 905 SvREFCNT_dec(PL_statname);
a0714e2c
SS
906 PL_statname = NULL;
907 PL_statgv = NULL;
5f05dabc 908
8ebc5c01
PP
909 /* defgv, aka *_ should be taken care of elsewhere */
910
8ebc5c01 911 /* clean up after study() */
3280af22 912 SvREFCNT_dec(PL_lastscream);
a0714e2c 913 PL_lastscream = NULL;
3280af22
NIS
914 Safefree(PL_screamfirst);
915 PL_screamfirst = 0;
916 Safefree(PL_screamnext);
917 PL_screamnext = 0;
8ebc5c01 918
7d5ea4e7
GS
919 /* float buffer */
920 Safefree(PL_efloatbuf);
bd61b366 921 PL_efloatbuf = NULL;
7d5ea4e7
GS
922 PL_efloatsize = 0;
923
8ebc5c01 924 /* startup and shutdown function lists */
3280af22 925 SvREFCNT_dec(PL_beginav);
5a837c8f 926 SvREFCNT_dec(PL_beginav_save);
3280af22 927 SvREFCNT_dec(PL_endav);
7d30b5c4 928 SvREFCNT_dec(PL_checkav);
ece599bd 929 SvREFCNT_dec(PL_checkav_save);
3280af22 930 SvREFCNT_dec(PL_initav);
7d49f689
NC
931 PL_beginav = NULL;
932 PL_beginav_save = NULL;
933 PL_endav = NULL;
934 PL_checkav = NULL;
935 PL_checkav_save = NULL;
936 PL_initav = NULL;
5618dfe8 937
8ebc5c01 938 /* shortcuts just get cleared */
a0714e2c
SS
939 PL_envgv = NULL;
940 PL_incgv = NULL;
941 PL_hintgv = NULL;
942 PL_errgv = NULL;
943 PL_argvgv = NULL;
944 PL_argvoutgv = NULL;
945 PL_stdingv = NULL;
946 PL_stderrgv = NULL;
947 PL_last_in_gv = NULL;
948 PL_replgv = NULL;
949 PL_DBgv = NULL;
950 PL_DBline = NULL;
951 PL_DBsub = NULL;
952 PL_DBsingle = NULL;
953 PL_DBtrace = NULL;
954 PL_DBsignal = NULL;
955 PL_DBassertion = NULL;
601f1833 956 PL_DBcv = NULL;
7d49f689 957 PL_dbargs = NULL;
5c284bb0 958 PL_debstash = NULL;
8ebc5c01 959
7a1c5554 960 SvREFCNT_dec(PL_argvout_stack);
7d49f689 961 PL_argvout_stack = NULL;
8ebc5c01 962
5c831c24 963 SvREFCNT_dec(PL_modglobal);
5c284bb0 964 PL_modglobal = NULL;
5c831c24 965 SvREFCNT_dec(PL_preambleav);
7d49f689 966 PL_preambleav = NULL;
5c831c24 967 SvREFCNT_dec(PL_subname);
a0714e2c 968 PL_subname = NULL;
5c831c24 969 SvREFCNT_dec(PL_linestr);
a0714e2c 970 PL_linestr = NULL;
ca0c25f6 971#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 972 SvREFCNT_dec(PL_pidstatus);
5c284bb0 973 PL_pidstatus = NULL;
ca0c25f6 974#endif
5c831c24 975 SvREFCNT_dec(PL_toptarget);
a0714e2c 976 PL_toptarget = NULL;
5c831c24 977 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
978 PL_bodytarget = NULL;
979 PL_formtarget = NULL;
5c831c24 980
d33b2eba 981 /* free locale stuff */
b9582b6a 982#ifdef USE_LOCALE_COLLATE
d33b2eba 983 Safefree(PL_collation_name);
bd61b366 984 PL_collation_name = NULL;
b9582b6a 985#endif
d33b2eba 986
b9582b6a 987#ifdef USE_LOCALE_NUMERIC
d33b2eba 988 Safefree(PL_numeric_name);
bd61b366 989 PL_numeric_name = NULL;
a453c169 990 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 991 PL_numeric_radix_sv = NULL;
b9582b6a 992#endif
d33b2eba 993
5c831c24
GS
994 /* clear utf8 character classes */
995 SvREFCNT_dec(PL_utf8_alnum);
996 SvREFCNT_dec(PL_utf8_alnumc);
997 SvREFCNT_dec(PL_utf8_ascii);
998 SvREFCNT_dec(PL_utf8_alpha);
999 SvREFCNT_dec(PL_utf8_space);
1000 SvREFCNT_dec(PL_utf8_cntrl);
1001 SvREFCNT_dec(PL_utf8_graph);
1002 SvREFCNT_dec(PL_utf8_digit);
1003 SvREFCNT_dec(PL_utf8_upper);
1004 SvREFCNT_dec(PL_utf8_lower);
1005 SvREFCNT_dec(PL_utf8_print);
1006 SvREFCNT_dec(PL_utf8_punct);
1007 SvREFCNT_dec(PL_utf8_xdigit);
1008 SvREFCNT_dec(PL_utf8_mark);
1009 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1010 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1011 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1012 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1013 SvREFCNT_dec(PL_utf8_idstart);
1014 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1015 PL_utf8_alnum = NULL;
1016 PL_utf8_alnumc = NULL;
1017 PL_utf8_ascii = NULL;
1018 PL_utf8_alpha = NULL;
1019 PL_utf8_space = NULL;
1020 PL_utf8_cntrl = NULL;
1021 PL_utf8_graph = NULL;
1022 PL_utf8_digit = NULL;
1023 PL_utf8_upper = NULL;
1024 PL_utf8_lower = NULL;
1025 PL_utf8_print = NULL;
1026 PL_utf8_punct = NULL;
1027 PL_utf8_xdigit = NULL;
1028 PL_utf8_mark = NULL;
1029 PL_utf8_toupper = NULL;
1030 PL_utf8_totitle = NULL;
1031 PL_utf8_tolower = NULL;
1032 PL_utf8_tofold = NULL;
1033 PL_utf8_idstart = NULL;
1034 PL_utf8_idcont = NULL;
5c831c24 1035
971a9dd3
GS
1036 if (!specialWARN(PL_compiling.cop_warnings))
1037 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1038 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1039 if (!specialCopIO(PL_compiling.cop_io))
1040 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1041 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1042 CopFILE_free(&PL_compiling);
1043 CopSTASH_free(&PL_compiling);
5c831c24 1044
a0d0e21e 1045 /* Prepare to destruct main symbol table. */
5f05dabc 1046
3280af22
NIS
1047 hv = PL_defstash;
1048 PL_defstash = 0;
a0d0e21e 1049 SvREFCNT_dec(hv);
5c831c24 1050 SvREFCNT_dec(PL_curstname);
a0714e2c 1051 PL_curstname = NULL;
a0d0e21e 1052
5a844595
GS
1053 /* clear queued errors */
1054 SvREFCNT_dec(PL_errors);
a0714e2c 1055 PL_errors = NULL;
5a844595 1056
a0d0e21e 1057 FREETMPS;
0453d815 1058 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1059 if (PL_scopestack_ix != 0)
9014280d 1060 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1061 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1062 (long)PL_scopestack_ix);
1063 if (PL_savestack_ix != 0)
9014280d 1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1065 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1066 (long)PL_savestack_ix);
1067 if (PL_tmps_floor != -1)
9014280d 1068 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1069 (long)PL_tmps_floor + 1);
a0d0e21e 1070 if (cxstack_ix != -1)
9014280d 1071 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1072 (long)cxstack_ix + 1);
a0d0e21e 1073 }
8990e307
LW
1074
1075 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1076 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1077 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1078
1079 /* the 2 is for PL_fdpid and PL_strtab */
1080 while (PL_sv_count > 2 && sv_clean_all())
1081 ;
1082
d33b2eba
GS
1083 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1084 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1085 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1086 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1087
d4777f27
GS
1088 AvREAL_off(PL_fdpid); /* no surviving entries */
1089 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1090 PL_fdpid = NULL;
d33b2eba 1091
6c644e78
GS
1092#ifdef HAVE_INTERP_INTERN
1093 sys_intern_clear();
1094#endif
1095
6e72f9df
PP
1096 /* Destruct the global string table. */
1097 {
1098 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1099 * so that sv_free() won't fail on them.
80459961
NC
1100 * Now that the global string table is using a single hunk of memory
1101 * for both HE and HEK, we either need to explicitly unshare it the
1102 * correct way, or actually free things here.
6e72f9df 1103 */
80459961
NC
1104 I32 riter = 0;
1105 const I32 max = HvMAX(PL_strtab);
c4420975 1106 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1107 HE *hent = array[0];
1108
6e72f9df 1109 for (;;) {
0453d815 1110 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1111 HE * const next = HeNEXT(hent);
9014280d 1112 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1113 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1114 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1115 Safefree(hent);
1116 hent = next;
6e72f9df
PP
1117 }
1118 if (!hent) {
1119 if (++riter > max)
1120 break;
1121 hent = array[riter];
1122 }
1123 }
80459961
NC
1124
1125 Safefree(array);
1126 HvARRAY(PL_strtab) = 0;
1127 HvTOTALKEYS(PL_strtab) = 0;
1128 HvFILL(PL_strtab) = 0;
6e72f9df 1129 }
3280af22 1130 SvREFCNT_dec(PL_strtab);
6e72f9df 1131
e652bb2f 1132#ifdef USE_ITHREADS
c21d1a0f 1133 /* free the pointer tables used for cloning */
a0739874 1134 ptr_table_free(PL_ptr_table);
bf9cdc68 1135 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1136#endif
a0739874 1137
d33b2eba
GS
1138 /* free special SVs */
1139
1140 SvREFCNT(&PL_sv_yes) = 0;
1141 sv_clear(&PL_sv_yes);
1142 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1143 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1144
1145 SvREFCNT(&PL_sv_no) = 0;
1146 sv_clear(&PL_sv_no);
1147 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1148 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1149
9f375a43
DM
1150 {
1151 int i;
1152 for (i=0; i<=2; i++) {
1153 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1154 sv_clear(PERL_DEBUG_PAD(i));
1155 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1156 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1157 }
1158 }
1159
0453d815 1160 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1161 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1162
eba0f806
DM
1163#ifdef DEBUG_LEAKING_SCALARS
1164 if (PL_sv_count != 0) {
1165 SV* sva;
1166 SV* sv;
1167 register SV* svend;
1168
1169 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1170 svend = &sva[SvREFCNT(sva)];
1171 for (sv = sva + 1; sv < svend; ++sv) {
1172 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1173 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1174 " flags=0x%"UVxf
fd0854ff
DM
1175 " refcnt=%"UVuf pTHX__FORMAT "\n"
1176 "\tallocated at %s:%d %s %s%s\n",
1177 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1178 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1179 sv->sv_debug_line,
1180 sv->sv_debug_inpad ? "for" : "by",
1181 sv->sv_debug_optype ?
1182 PL_op_name[sv->sv_debug_optype]: "(none)",
1183 sv->sv_debug_cloned ? " (cloned)" : ""
1184 );
2aa47728 1185#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1186 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1187#endif
eba0f806
DM
1188 }
1189 }
1190 }
1191 }
2aa47728
NC
1192#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1193 {
1194 int status;
1195 fd_set rset;
1196 /* Wait for up to 4 seconds for child to terminate.
1197 This seems to be the least effort way of timing out on reaping
1198 its exit status. */
1199 struct timeval waitfor = {4, 0};
41e4abd8 1200 int sock = PL_dumper_fd;
2aa47728
NC
1201
1202 shutdown(sock, 1);
1203 FD_ZERO(&rset);
1204 FD_SET(sock, &rset);
1205 select(sock + 1, &rset, NULL, NULL, &waitfor);
1206 waitpid(child, &status, WNOHANG);
1207 close(sock);
1208 }
1209#endif
eba0f806 1210#endif
bf9cdc68 1211 PL_sv_count = 0;
eba0f806
DM
1212
1213
56a2bab7 1214#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1215 /* No more IO - including error messages ! */
1216 PerlIO_cleanup(aTHX);
1217#endif
1218
9f4bd222 1219 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1220 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1221 for no arg - and will try and SvREFCNT_dec it.
1222 */
1223 SvREFCNT(&PL_sv_undef) = 0;
1224 SvREADONLY_off(&PL_sv_undef);
1225
3280af22 1226 Safefree(PL_origfilename);
bd61b366 1227 PL_origfilename = NULL;
3280af22 1228 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1229 PL_reg_start_tmp = (char**)NULL;
1230 PL_reg_start_tmpl = 0;
43c5f42d 1231 Safefree(PL_reg_curpm);
82ba1be6 1232 Safefree(PL_reg_poscache);
dd28f7bb 1233 free_tied_hv_pool();
3280af22 1234 Safefree(PL_op_mask);
cf36064f 1235 Safefree(PL_psig_ptr);
bf9cdc68 1236 PL_psig_ptr = (SV**)NULL;
cf36064f 1237 Safefree(PL_psig_name);
bf9cdc68 1238 PL_psig_name = (SV**)NULL;
2c2666fc 1239 Safefree(PL_bitcount);
bd61b366 1240 PL_bitcount = NULL;
ce08f86c 1241 Safefree(PL_psig_pend);
bf9cdc68 1242 PL_psig_pend = (int*)NULL;
a0714e2c 1243 PL_formfeed = NULL;
6e72f9df 1244 nuke_stacks();
bf9cdc68
RG
1245 PL_tainting = FALSE;
1246 PL_taint_warn = FALSE;
3280af22 1247 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1248 PL_debug = 0;
ac27b0f5 1249
a0d0e21e 1250 DEBUG_P(debprofdump());
d33b2eba 1251
e5dd39fc 1252#ifdef USE_REENTRANT_API
10bc17b6 1253 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1254#endif
1255
612f20c3
GS
1256 sv_free_arenas();
1257
fc36a67e
PP
1258 /* As the absolutely last thing, free the non-arena SV for mess() */
1259
3280af22 1260 if (PL_mess_sv) {
f350b448
NC
1261 /* we know that type == SVt_PVMG */
1262
9c63abab 1263 /* it could have accumulated taint magic */
f350b448
NC
1264 MAGIC* mg;
1265 MAGIC* moremagic;
1266 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1267 moremagic = mg->mg_moremagic;
1268 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1269 && mg->mg_len >= 0)
1270 Safefree(mg->mg_ptr);
1271 Safefree(mg);
9c63abab 1272 }
f350b448 1273
fc36a67e 1274 /* we know that type >= SVt_PV */
8bd4d4c5 1275 SvPV_free(PL_mess_sv);
3280af22
NIS
1276 Safefree(SvANY(PL_mess_sv));
1277 Safefree(PL_mess_sv);
a0714e2c 1278 PL_mess_sv = NULL;
fc36a67e 1279 }
37038d91 1280 return STATUS_EXIT;
79072805
LW
1281}
1282
954c1994
GS
1283/*
1284=for apidoc perl_free
1285
1286Releases a Perl interpreter. See L<perlembed>.
1287
1288=cut
1289*/
1290
79072805 1291void
0cb96387 1292perl_free(pTHXx)
79072805 1293{
7cb608b5 1294#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1295 {
1296 /*
1297 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1298 * value as we're probably hunting memory leaks then
1299 */
1300 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1301 if (!s || atoi(s) == 0) {
1302 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1303 thread at thread exit. */
1304 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1305 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1306 }
1307 }
7cb608b5
NC
1308#endif
1309
acfe0abc 1310#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1311# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1312 {
acfe0abc 1313# ifdef NETWARE
7af12a34 1314 void *host = nw_internal_host;
acfe0abc 1315# else
7af12a34 1316 void *host = w32_internal_host;
acfe0abc 1317# endif
7af12a34 1318 PerlMem_free(aTHXx);
acfe0abc 1319# ifdef NETWARE
7af12a34 1320 nw_delete_internal_host(host);
acfe0abc 1321# else
7af12a34 1322 win32_delete_internal_host(host);
acfe0abc 1323# endif
7af12a34 1324 }
1c0ca838
GS
1325# else
1326 PerlMem_free(aTHXx);
1327# endif
acfe0abc
GS
1328#else
1329 PerlMem_free(aTHXx);
76e3520e 1330#endif
79072805
LW
1331}
1332
b7f7fff6 1333#if defined(USE_ITHREADS)
aebd1ac7
GA
1334/* provide destructors to clean up the thread key when libperl is unloaded */
1335#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1336
826955bd 1337#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7
GA
1338#pragma fini "perl_fini"
1339#endif
1340
0dbb1585
AL
1341static void
1342#if defined(__GNUC__)
1343__attribute__((destructor))
aebd1ac7 1344#endif
de009b76 1345perl_fini(void)
aebd1ac7 1346{
27da23d5 1347 dVAR;
aebd1ac7
GA
1348 if (PL_curinterp)
1349 FREE_THREAD_KEY;
1350}
1351
1352#endif /* WIN32 */
1353#endif /* THREADS */
1354
4b556e6c 1355void
864dbfa3 1356Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1357{
97aff369 1358 dVAR;
3280af22
NIS
1359 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1360 PL_exitlist[PL_exitlistlen].fn = fn;
1361 PL_exitlist[PL_exitlistlen].ptr = ptr;
1362 ++PL_exitlistlen;
4b556e6c
JD
1363}
1364
56cf6df8
RGS
1365#ifdef HAS_PROCSELFEXE
1366/* This is a function so that we don't hold on to MAXPATHLEN
1367 bytes of stack longer than necessary
1368 */
1369STATIC void
e1ec3a88 1370S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1371{
1372 char buf[MAXPATHLEN];
1373 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1374
1375 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1376 includes a spurious NUL which will cause $^X to fail in system
1377 or backticks (this will prevent extensions from being built and
1378 many tests from working). readlink is not meant to add a NUL.
1379 Normal readlink works fine.
1380 */
1381 if (len > 0 && buf[len-1] == '\0') {
1382 len--;
1383 }
1384
1385 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1386 returning the text "unknown" from the readlink rather than the path
1387 to the executable (or returning an error from the readlink). Any valid
1388 path has a '/' in it somewhere, so use that to validate the result.
1389 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1390 */
1391 if (len > 0 && memchr(buf, '/', len)) {
1392 sv_setpvn(sv,buf,len);
1393 }
1394 else {
1395 sv_setpv(sv,arg0);
1396 }
1397}
1398#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1399
1400STATIC void
1401S_set_caret_X(pTHX) {
97aff369 1402 dVAR;
fafc274c 1403 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1404 if (tmpgv) {
1405#ifdef HAS_PROCSELFEXE
1406 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1407#else
1408#ifdef OS2
c69033f2 1409 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1410#else
c69033f2 1411 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1412#endif
1413#endif
1414 }
1415}
1416
954c1994
GS
1417/*
1418=for apidoc perl_parse
1419
1420Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1421
1422=cut
1423*/
1424
79072805 1425int
0cb96387 1426perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1427{
27da23d5 1428 dVAR;
6224f72b 1429 I32 oldscope;
6224f72b 1430 int ret;
db36c5a1 1431 dJMPENV;
8d063cd8 1432
9d4ba2ae
AL
1433 PERL_UNUSED_VAR(my_perl);
1434
a687059c
LW
1435#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1436#ifdef IAMSUID
1437#undef IAMSUID
cea2e8a9 1438 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1439setuid perl scripts securely.\n");
ae3f3efd 1440#endif /* IAMSUID */
a687059c
LW
1441#endif
1442
b0891165
JH
1443#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1444 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1445 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1446 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1447 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1448 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1449 if (!PL_rehash_seed_set)
1450 PL_rehash_seed = get_hash_seed();
b0891165 1451 {
9d4ba2ae 1452 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1453
1b6737cc
AL
1454 if (s && (atoi(s) == 1))
1455 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1456 }
1457#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1458
3280af22 1459 PL_origargc = argc;
e2975953 1460 PL_origargv = argv;
a0d0e21e 1461
a2722ac9
GA
1462 if (PL_origalen != 0) {
1463 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1464 }
1465 else {
3cb9023d
JH
1466 /* Set PL_origalen be the sum of the contiguous argv[]
1467 * elements plus the size of the env in case that it is
e9137a8e 1468 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1469 * as the maximum modifiable length of $0. In the worst case
1470 * the area we are able to modify is limited to the size of
43c32782 1471 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1472 * --jhi */
e1ec3a88 1473 const char *s = NULL;
54bfe034 1474 int i;
1b6737cc 1475 const UV mask =
7d8e7db3 1476 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1477 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1478 const UV aligned =
43c32782
JH
1479 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1480
1481 /* See if all the arguments are contiguous in memory. Note
1482 * that 'contiguous' is a loose term because some platforms
1483 * align the argv[] and the envp[]. If the arguments look
1484 * like non-aligned, assume that they are 'strictly' or
1485 * 'traditionally' contiguous. If the arguments look like
1486 * aligned, we just check that they are within aligned
1487 * PTRSIZE bytes. As long as no system has something bizarre
1488 * like the argv[] interleaved with some other data, we are
1489 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1490 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1491 while (*s) s++;
1492 for (i = 1; i < PL_origargc; i++) {
1493 if ((PL_origargv[i] == s + 1
43c32782 1494#ifdef OS2
c8941eeb 1495 || PL_origargv[i] == s + 2
43c32782 1496#endif
c8941eeb
JH
1497 )
1498 ||
1499 (aligned &&
1500 (PL_origargv[i] > s &&
1501 PL_origargv[i] <=
1502 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1503 )
1504 {
1505 s = PL_origargv[i];
1506 while (*s) s++;
1507 }
1508 else
1509 break;
54bfe034 1510 }
54bfe034 1511 }
3cb9023d 1512 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1513 if (s && PL_origenviron) {
43c32782
JH
1514 if ((PL_origenviron[0] == s + 1
1515#ifdef OS2
1516 || (PL_origenviron[0] == s + 9 && (s += 8))
1517#endif
1518 )
1519 ||
1520 (aligned &&
1521 (PL_origenviron[0] > s &&
1522 PL_origenviron[0] <=
1523 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1524 )
1525 {
1526#ifndef OS2
1527 s = PL_origenviron[0];
1528 while (*s) s++;
1529#endif
bd61b366 1530 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1531 /* Force copy of environment. */
1532 for (i = 1; PL_origenviron[i]; i++) {
1533 if (PL_origenviron[i] == s + 1
1534 ||
1535 (aligned &&
1536 (PL_origenviron[i] > s &&
1537 PL_origenviron[i] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 )
1540 {
1541 s = PL_origenviron[i];
1542 while (*s) s++;
1543 }
1544 else
1545 break;
54bfe034 1546 }
43c32782 1547 }
54bfe034 1548 }
2d2af554 1549 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1550 }
1551
3280af22 1552 if (PL_do_undump) {
a0d0e21e
LW
1553
1554 /* Come here if running an undumped a.out. */
1555
3280af22
NIS
1556 PL_origfilename = savepv(argv[0]);
1557 PL_do_undump = FALSE;
a0d0e21e 1558 cxstack_ix = -1; /* start label stack again */
748a9306 1559 init_ids();
b7975bdd
NC
1560 assert (!PL_tainted);
1561 TAINT;
1562 S_set_caret_X(aTHX);
1563 TAINT_NOT;
a0d0e21e
LW
1564 init_postdump_symbols(argc,argv,env);
1565 return 0;
1566 }
1567
3280af22 1568 if (PL_main_root) {
3280af22 1569 op_free(PL_main_root);
5f66b61c 1570 PL_main_root = NULL;
ff0cee69 1571 }
5f66b61c 1572 PL_main_start = NULL;
3280af22 1573 SvREFCNT_dec(PL_main_cv);
601f1833 1574 PL_main_cv = NULL;
79072805 1575
3280af22
NIS
1576 time(&PL_basetime);
1577 oldscope = PL_scopestack_ix;
599cee73 1578 PL_dowarn = G_WARN_OFF;
f86702cc 1579
14dd3ad8 1580 JMPENV_PUSH(ret);
6224f72b 1581 switch (ret) {
312caa8e 1582 case 0:
14dd3ad8 1583 parse_body(env,xsinit);
7d30b5c4
GS
1584 if (PL_checkav)
1585 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1586 ret = 0;
1587 break;
6224f72b
GS
1588 case 1:
1589 STATUS_ALL_FAILURE;
1590 /* FALL THROUGH */
1591 case 2:
1592 /* my_exit() was called */
3280af22 1593 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1594 LEAVE;
1595 FREETMPS;
3280af22 1596 PL_curstash = PL_defstash;
7d30b5c4
GS
1597 if (PL_checkav)
1598 call_list(oldscope, PL_checkav);
37038d91 1599 ret = STATUS_EXIT;
14dd3ad8 1600 break;
6224f72b 1601 case 3:
bf49b057 1602 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1603 ret = 1;
1604 break;
6224f72b 1605 }
14dd3ad8
GS
1606 JMPENV_POP;
1607 return ret;
1608}
1609
312caa8e 1610STATIC void *
14dd3ad8 1611S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1612{
27da23d5 1613 dVAR;
312caa8e 1614 int argc = PL_origargc;
8f42b153 1615 char **argv = PL_origargv;
e1ec3a88 1616 const char *scriptname = NULL;
312caa8e 1617 VOL bool dosearch = FALSE;
e1ec3a88 1618 const char *validarg = "";
312caa8e
CS
1619 register SV *sv;
1620 register char *s;
bd61b366 1621 const char *cddir = NULL;
ab019eaa 1622#ifdef USE_SITECUSTOMIZE
20ef40cf 1623 bool minus_f = FALSE;
ab019eaa 1624#endif
312caa8e 1625
3280af22 1626 sv_setpvn(PL_linestr,"",0);
396482e1 1627 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1628 SAVEFREESV(sv);
1629 init_main_stash();
54310121 1630
6224f72b
GS
1631 for (argc--,argv++; argc > 0; argc--,argv++) {
1632 if (argv[0][0] != '-' || !argv[0][1])
1633 break;
1634#ifdef DOSUID
1635 if (*validarg)
1636 validarg = " PHOOEY ";
1637 else
1638 validarg = argv[0];
ae3f3efd
PS
1639 /*
1640 * Can we rely on the kernel to start scripts with argv[1] set to
1641 * contain all #! line switches (the whole line)? (argv[0] is set to
1642 * the interpreter name, argv[2] to the script name; argv[3] and
1643 * above may contain other arguments.)
1644 */
13281fa4 1645#endif
6224f72b
GS
1646 s = argv[0]+1;
1647 reswitch:
1648 switch (*s) {
729a02f2 1649 case 'C':
1d5472a9
GS
1650#ifndef PERL_STRICT_CR
1651 case '\r':
1652#endif
6224f72b
GS
1653 case ' ':
1654 case '0':
1655 case 'F':
1656 case 'a':
1657 case 'c':
1658 case 'd':
1659 case 'D':
1660 case 'h':
1661 case 'i':
1662 case 'l':
1663 case 'M':
1664 case 'm':
1665 case 'n':
1666 case 'p':
1667 case 's':
1668 case 'u':
1669 case 'U':
1670 case 'v':
599cee73
PM
1671 case 'W':
1672 case 'X':
6224f72b 1673 case 'w':
06492da6 1674 case 'A':
97bd5664 1675 if ((s = moreswitches(s)))
6224f72b
GS
1676 goto reswitch;
1677 break;
33b78306 1678
1dbad523 1679 case 't':
22f7c9c9 1680 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1681 if( !PL_tainting ) {
1682 PL_taint_warn = TRUE;
1683 PL_tainting = TRUE;
1684 }
1685 s++;
1686 goto reswitch;
6224f72b 1687 case 'T':
22f7c9c9 1688 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1689 PL_tainting = TRUE;
317ea90d 1690 PL_taint_warn = FALSE;
6224f72b
GS
1691 s++;
1692 goto reswitch;
f86702cc 1693
bc9b29db
RH
1694 case 'E':
1695 PL_minus_E = TRUE;
1696 /* FALL THROUGH */
6224f72b 1697 case 'e':
bf4acbe4
GS
1698#ifdef MACOS_TRADITIONAL
1699 /* ignore -e for Dev:Pseudo argument */
1700 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1701 break;
bf4acbe4 1702#endif
a52eba0e 1703 forbid_setid('e', -1);
3280af22 1704 if (!PL_e_script) {
396482e1 1705 PL_e_script = newSVpvs("");
0cb96387 1706 filter_add(read_e_script, NULL);
6224f72b
GS
1707 }
1708 if (*++s)
3280af22 1709 sv_catpv(PL_e_script, s);
6224f72b 1710 else if (argv[1]) {
3280af22 1711 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1712 argc--,argv++;
1713 }
1714 else
bc9b29db 1715 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1716 sv_catpvs(PL_e_script, "\n");
6224f72b 1717 break;
afe37c7d 1718
20ef40cf 1719 case 'f':
f5542d3a 1720#ifdef USE_SITECUSTOMIZE
20ef40cf 1721 minus_f = TRUE;
f5542d3a 1722#endif
20ef40cf
GA
1723 s++;
1724 goto reswitch;
1725
6224f72b 1726 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1727 forbid_setid('I', -1);
bd61b366 1728 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1729 argc--,argv++;
1730 }
6224f72b 1731 if (s && *s) {
0df16ed7 1732 STRLEN len = strlen(s);
aec46f14 1733 const char * const p = savepvn(s, len);
88fe16b2 1734 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1735 sv_catpvs(sv, "-I");
0df16ed7 1736 sv_catpvn(sv, p, len);
396482e1 1737 sv_catpvs(sv, " ");
6224f72b 1738 Safefree(p);
0df16ed7
GS
1739 }
1740 else
a67e862a 1741 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1742 break;
1743 case 'P':
a52eba0e 1744 forbid_setid('P', -1);
3280af22 1745 PL_preprocess = TRUE;
6224f72b
GS
1746 s++;
1747 goto reswitch;
1748 case 'S':
a52eba0e 1749 forbid_setid('S', -1);
6224f72b
GS
1750 dosearch = TRUE;
1751 s++;
1752 goto reswitch;
1753 case 'V':
7edfd0ef
NC
1754 {
1755 SV *opts_prog;
1756
1757 if (!PL_preambleav)
1758 PL_preambleav = newAV();
1759 av_push(PL_preambleav,
396482e1 1760 newSVpvs("use Config;"));
7edfd0ef
NC
1761 if (*++s != ':') {
1762 STRLEN opts;
1763
396482e1 1764 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1765#ifdef VMS
396482e1 1766 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1767#else
396482e1 1768 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1769#endif
7edfd0ef 1770 opts = SvCUR(opts_prog);
efcaa95b 1771
9cd7d3f2 1772 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1773# ifdef DEBUGGING
e2e4dbf1 1774 " DEBUGGING"
6224f72b 1775# endif
4f185743
NC
1776# ifdef DEBUG_LEAKING_SCALARS
1777 " DEBUG_LEAKING_SCALARS"
1778# endif
85e1fcb9 1779# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1780 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1781# endif
1782# ifdef FAKE_THREADS
e2e4dbf1 1783 " FAKE_THREADS"
85e1fcb9 1784# endif
6224f72b 1785# ifdef MULTIPLICITY
e2e4dbf1 1786 " MULTIPLICITY"
6224f72b 1787# endif
85e1fcb9 1788# ifdef MYMALLOC
e2e4dbf1 1789 " MYMALLOC"
85e1fcb9 1790# endif
3bcf5ed8
SP
1791# ifdef NO_MATHOMS
1792 " NO_MATHOMS"
1793# endif
85e1fcb9 1794# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1795 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1796# endif
1797# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1798 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1799# endif
1800# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1801 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1802# endif
1803# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1804 " PERL_IMPLICIT_SYS"
85e1fcb9 1805# endif
a724edfe
NC
1806# ifdef PERL_MAD
1807 " PERL_MAD"
1808# endif
85e1fcb9 1809# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1810 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1811# endif
1812# ifdef PERL_NEED_APPCTX
e2e4dbf1 1813 " PERL_NEED_APPCTX"
85e1fcb9
SH
1814# endif
1815# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1816 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1817# endif
1818# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1819 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1820# endif
9c0a4d5d
DM
1821# ifdef PERL_TRACK_MEMPOOL
1822 " PERL_TRACK_MEMPOOL"
1823# endif
417cd4a8
SP
1824# ifdef PERL_USE_SAFE_PUTENV
1825 " PERL_USE_SAFE_PUTENV"
1826# endif
ca0c25f6
NC
1827#ifdef PERL_USES_PL_PIDSTATUS
1828 " PERL_USES_PL_PIDSTATUS"
1829#endif
85e1fcb9 1830# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1831 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1832# endif
1833# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1834 " THREADS_HAVE_PIDS"
85e1fcb9 1835# endif
85e1fcb9 1836# ifdef USE_64_BIT_ALL
e2e4dbf1 1837 " USE_64_BIT_ALL"
ac5e8965 1838# endif
10cc9d2a 1839# ifdef USE_64_BIT_INT
e2e4dbf1 1840 " USE_64_BIT_INT"
10cc9d2a 1841# endif
85e1fcb9 1842# ifdef USE_ITHREADS
e2e4dbf1 1843 " USE_ITHREADS"
85e1fcb9
SH
1844# endif
1845# ifdef USE_LARGE_FILES
e2e4dbf1 1846 " USE_LARGE_FILES"
ac5e8965
JH
1847# endif
1848# ifdef USE_LONG_DOUBLE
e2e4dbf1 1849 " USE_LONG_DOUBLE"
ac5e8965 1850# endif
85e1fcb9 1851# ifdef USE_PERLIO
e2e4dbf1 1852 " USE_PERLIO"
53430762 1853# endif
85e1fcb9 1854# ifdef USE_REENTRANT_API
e2e4dbf1 1855 " USE_REENTRANT_API"
85e1fcb9
SH
1856# endif
1857# ifdef USE_SFIO
e2e4dbf1 1858 " USE_SFIO"
ac5e8965 1859# endif
20ef40cf 1860# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1861 " USE_SITECUSTOMIZE"
20ef40cf 1862# endif
85e1fcb9 1863# ifdef USE_SOCKS
e2e4dbf1 1864 " USE_SOCKS"
b363f7ed 1865# endif
e2e4dbf1 1866 );
efcaa95b 1867
7edfd0ef
NC
1868 while (SvCUR(opts_prog) > opts+76) {
1869 /* find last space after "options: " and before col 76
1870 */
efcaa95b 1871
7edfd0ef 1872 const char *space;
c4420975 1873 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1874 const char c = pv[opts+76];
1875 pv[opts+76] = '\0';
1876 space = strrchr(pv+opts+26, ' ');
1877 pv[opts+76] = c;
1878 if (!space) break; /* "Can't happen" */
efcaa95b 1879
7edfd0ef 1880 /* break the line before that space */
efcaa95b 1881
7edfd0ef 1882 opts = space - pv;
89529cee 1883 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1884 STR_WITH_LEN("\\n "));
7edfd0ef 1885 }
efcaa95b 1886
396482e1 1887 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1888
6224f72b 1889#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1890 if (LOCAL_PATCH_COUNT > 0) {
1891 int i;
396482e1 1892 sv_catpvs(opts_prog,
7edfd0ef
NC
1893 "\" Locally applied patches:\\n\",");
1894 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1895 if (PL_localpatches[i])
1896 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1897 0, PL_localpatches[i], 0);
1898 }
6224f72b 1899 }
6224f72b 1900#endif
7edfd0ef
NC
1901 Perl_sv_catpvf(aTHX_ opts_prog,
1902 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1903#ifdef __DATE__
1904# ifdef __TIME__
7edfd0ef
NC
1905 Perl_sv_catpvf(aTHX_ opts_prog,
1906 ",\" Compiled at %s %s\\n\"",__DATE__,
1907 __TIME__);
6224f72b 1908# else
7edfd0ef
NC
1909 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1910 __DATE__);
6224f72b
GS
1911# endif
1912#endif
396482e1 1913 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1914 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1915 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1916#ifdef __CYGWIN__
396482e1 1917 sv_catpvs(opts_prog,
7edfd0ef 1918 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1919#endif
396482e1 1920 sv_catpvs(opts_prog,
7edfd0ef
NC
1921 "print \" \\%ENV:\\n @env\\n\" if @env;"
1922 "print \" \\@INC:\\n @INC\\n\";");
1923 }
1924 else {
1925 ++s;
1926 opts_prog = Perl_newSVpvf(aTHX_
1927 "Config::config_vars(qw%c%s%c)",
1928 0, s, 0);
1929 s += strlen(s);
1930 }
1931 av_push(PL_preambleav, opts_prog);
1932 /* don't look for script or read stdin */
1933 scriptname = BIT_BUCKET;
1934 goto reswitch;
6224f72b 1935 }
6224f72b 1936 case 'x':
3280af22 1937 PL_doextract = TRUE;
6224f72b
GS
1938 s++;
1939 if (*s)
f4c556ac 1940 cddir = s;
6224f72b
GS
1941 break;
1942 case 0:
1943 break;
1944 case '-':
1945 if (!*++s || isSPACE(*s)) {
1946 argc--,argv++;
1947 goto switch_end;
1948 }
1949 /* catch use of gnu style long options */
1950 if (strEQ(s, "version")) {
dd374669 1951 s = (char *)"v";
6224f72b
GS
1952 goto reswitch;
1953 }
1954 if (strEQ(s, "help")) {
dd374669 1955 s = (char *)"h";
6224f72b
GS
1956 goto reswitch;
1957 }
1958 s--;
1959 /* FALL THROUGH */
1960 default:
cea2e8a9 1961 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1962 }
1963 }
6224f72b 1964 switch_end:
54310121 1965
f675dbe5
CB
1966 if (
1967#ifndef SECURE_INTERNAL_GETENV
1968 !PL_tainting &&
1969#endif
cf756827 1970 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1971 {
e1ec3a88 1972 const char *popt = s;
74288ac8
GS
1973 while (isSPACE(*s))
1974 s++;
317ea90d 1975 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1976 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1977 PL_tainting = TRUE;
317ea90d
MS
1978 PL_taint_warn = FALSE;
1979 }
74288ac8 1980 else {
bd61b366 1981 char *popt_copy = NULL;
74288ac8 1982 while (s && *s) {
4ea8f8fb 1983 char *d;
74288ac8
GS
1984 while (isSPACE(*s))
1985 s++;
1986 if (*s == '-') {
1987 s++;
1988 if (isSPACE(*s))
1989 continue;
1990 }
4ea8f8fb 1991 d = s;
74288ac8
GS
1992 if (!*s)
1993 break;
e4af53b0 1994 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1995 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1996 while (++s && *s) {
1997 if (isSPACE(*s)) {
cf756827
GS
1998 if (!popt_copy) {
1999 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2000 s = popt_copy + (s - popt);
2001 d = popt_copy + (d - popt);
2002 }
4ea8f8fb
MS
2003 *s++ = '\0';
2004 break;
2005 }
2006 }
1c4db469 2007 if (*d == 't') {
317ea90d
MS
2008 if( !PL_tainting ) {
2009 PL_taint_warn = TRUE;
2010 PL_tainting = TRUE;
2011 }
1c4db469 2012 } else {
97bd5664 2013 moreswitches(d);
1c4db469 2014 }
6224f72b 2015 }
6224f72b
GS
2016 }
2017 }
a0d0e21e 2018
20ef40cf
GA
2019#ifdef USE_SITECUSTOMIZE
2020 if (!minus_f) {
2021 if (!PL_preambleav)
2022 PL_preambleav = newAV();
2023 av_unshift(PL_preambleav, 1);
2024 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2025 }
2026#endif
2027
317ea90d
MS
2028 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2029 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2030 }
2031
6224f72b
GS
2032 if (!scriptname)
2033 scriptname = argv[0];
3280af22 2034 if (PL_e_script) {
6224f72b
GS
2035 argc++,argv--;
2036 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2037 }
bd61b366 2038 else if (scriptname == NULL) {
6224f72b
GS
2039#ifdef MSDOS
2040 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2041 moreswitches("h");
6224f72b
GS
2042#endif
2043 scriptname = "-";
2044 }
2045
b7975bdd
NC
2046 /* Set $^X early so that it can be used for relocatable paths in @INC */
2047 assert (!PL_tainted);
2048 TAINT;
2049 S_set_caret_X(aTHX);
2050 TAINT_NOT;
6224f72b
GS
2051 init_perllib();
2052
a52eba0e
NC
2053 {
2054 int suidscript;
2055 const int fdscript
2056 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2057
a52eba0e 2058 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2059
64ca3a65 2060#ifndef PERL_MICRO
a52eba0e
NC
2061# if defined(SIGCHLD) || defined(SIGCLD)
2062 {
2063# ifndef SIGCHLD
2064# define SIGCHLD SIGCLD
2065# endif
2066 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2067 if (sigstate == (Sighandler_t) SIG_IGN) {
2068 if (ckWARN(WARN_SIGNAL))
2069 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2070 "Can't ignore signal CHLD, forcing to default");
2071 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2072 }
0b5b802d 2073 }
a52eba0e 2074# endif
64ca3a65 2075#endif
0b5b802d 2076
a52eba0e 2077 if (PL_doextract
bf4acbe4 2078#ifdef MACOS_TRADITIONAL
a52eba0e 2079 || gMacPerl_AlwaysExtract
bf4acbe4 2080#endif
a52eba0e 2081 ) {
faef540c
NC
2082
2083 /* This will croak if suidscript is >= 0, as -x cannot be used with
2084 setuid scripts. */
2085 forbid_setid('x', suidscript);
2086 /* Hence you can't get here if suidscript >= 0 */
2087
2088 find_beginning();
a52eba0e
NC
2089 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2090 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2091 }
f4c556ac 2092 }
6224f72b 2093
561b68a9 2094 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2095 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2096 CvUNIQUE_on(PL_compcv);
2097
dd2155a4 2098 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2099
0c4f7ff0 2100 boot_core_PerlIO();
6224f72b 2101 boot_core_UNIVERSAL();
09bef843 2102 boot_core_xsutils();
6224f72b
GS
2103
2104 if (xsinit)
acfe0abc 2105 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2106#ifndef PERL_MICRO
d0d72822 2107#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2108 init_os_extras();
6224f72b 2109#endif
64ca3a65 2110#endif
6224f72b 2111
29209bc5 2112#ifdef USE_SOCKS
1b9c9cf5
DH
2113# ifdef HAS_SOCKS5_INIT
2114 socks5_init(argv[0]);
2115# else
29209bc5 2116 SOCKSinit(argv[0]);
1b9c9cf5 2117# endif
ac27b0f5 2118#endif
29209bc5 2119
6224f72b
GS
2120 init_predump_symbols();
2121 /* init_postdump_symbols not currently designed to be called */
2122 /* more than once (ENV isn't cleared first, for example) */
2123 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2124 if (!PL_do_undump)
6224f72b
GS
2125 init_postdump_symbols(argc,argv,env);
2126
27da23d5
JH
2127 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2128 * or explicitly in some platforms.
085a54d9 2129 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2130 * look like the user wants to use UTF-8. */
a0fd4948 2131#if defined(__SYMBIAN32__)
27da23d5
JH
2132 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2133#endif
06e66572
JH
2134 if (PL_unicode) {
2135 /* Requires init_predump_symbols(). */
a05d7ebb 2136 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2137 IO* io;
2138 PerlIO* fp;
2139 SV* sv;
2140
a05d7ebb 2141 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2142 * and the default open disciplines. */
a05d7ebb
JH
2143 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2144 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2145 (fp = IoIFP(io)))
2146 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2147 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2148 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2149 (fp = IoOFP(io)))
2150 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2151 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2152 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2153 (fp = IoOFP(io)))
2154 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2155 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2156 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2157 SVt_PV)))) {
a05d7ebb
JH
2158 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2159 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2160 if (in) {
2161 if (out)
2162 sv_setpvn(sv, ":utf8\0:utf8", 11);
2163 else
2164 sv_setpvn(sv, ":utf8\0", 6);
2165 }
2166 else if (out)
2167 sv_setpvn(sv, "\0:utf8", 6);
2168 SvSETMAGIC(sv);
2169 }
b310b053
JH
2170 }
2171 }
2172
4ffa73a3
JH
2173 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2174 if (strEQ(s, "unsafe"))
2175 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2176 else if (strEQ(s, "safe"))
2177 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2178 else
2179 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2180 }
2181
81d86705
NC
2182#ifdef PERL_MAD
2183 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2184 PL_madskills = 1;
2185 PL_minus_c = 1;
2186 if (!s || !s[0])
2187 PL_xmlfp = PerlIO_stdout();
2188 else {
2189 PL_xmlfp = PerlIO_open(s, "w");
2190 if (!PL_xmlfp)
2191 Perl_croak(aTHX_ "Can't open %s", s);
2192 }
2193 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2194 }
2195 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2196 PL_madskills = atoi(s);
2197 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2198 }
2199#endif
2200
6224f72b
GS
2201 init_lexer();
2202
2203 /* now parse the script */
2204
93189314 2205 SETERRNO(0,SS_NORMAL);
3280af22 2206 PL_error_count = 0;
bf4acbe4
GS
2207#ifdef MACOS_TRADITIONAL
2208 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2209 if (PL_minus_c)
2210 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2211 else {
2212 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2213 MacPerl_MPWFileName(PL_origfilename));
2214 }
2215 }
2216#else
3280af22
NIS
2217 if (yyparse() || PL_error_count) {
2218 if (PL_minus_c)
cea2e8a9 2219 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2220 else {
cea2e8a9 2221 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2222 PL_origfilename);
6224f72b
GS
2223 }
2224 }
bf4acbe4 2225#endif
57843af0 2226 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2227 PL_curstash = PL_defstash;
2228 PL_preprocess = FALSE;
2229 if (PL_e_script) {
2230 SvREFCNT_dec(PL_e_script);
a0714e2c 2231 PL_e_script = NULL;
6224f72b
GS
2232 }
2233
3280af22 2234 if (PL_do_undump)
6224f72b
GS
2235 my_unexec();
2236
57843af0
GS
2237 if (isWARN_ONCE) {
2238 SAVECOPFILE(PL_curcop);
2239 SAVECOPLINE(PL_curcop);
3280af22 2240 gv_check(PL_defstash);
57843af0 2241 }
6224f72b
GS
2242
2243 LEAVE;
2244 FREETMPS;
2245
2246#ifdef MYMALLOC
2247 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2248 dump_mstats("after compilation:");
2249#endif
2250
2251 ENTER;
3280af22 2252 PL_restartop = 0;
312caa8e 2253 return NULL;
6224f72b
GS
2254}
2255
954c1994
GS
2256/*
2257=for apidoc perl_run
2258
2259Tells a Perl interpreter to run. See L<perlembed>.
2260
2261=cut
2262*/
2263
6224f72b 2264int
0cb96387 2265perl_run(pTHXx)
6224f72b 2266{
97aff369 2267 dVAR;
6224f72b 2268 I32 oldscope;
14dd3ad8 2269 int ret = 0;
db36c5a1 2270 dJMPENV;
6224f72b 2271
96a5add6 2272 PERL_UNUSED_CONTEXT;
9d4ba2ae 2273
3280af22 2274 oldscope = PL_scopestack_ix;
96e176bf
CL
2275#ifdef VMS
2276 VMSISH_HUSHED = 0;
2277#endif
6224f72b 2278
14dd3ad8 2279 JMPENV_PUSH(ret);
6224f72b
GS
2280 switch (ret) {
2281 case 1:
2282 cxstack_ix = -1; /* start context stack again */
312caa8e 2283 goto redo_body;
14dd3ad8 2284 case 0: /* normal completion */
14dd3ad8
GS
2285 redo_body:
2286 run_body(oldscope);
14dd3ad8
GS
2287 /* FALL THROUGH */
2288 case 2: /* my_exit() */
3280af22 2289 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2290 LEAVE;
2291 FREETMPS;
3280af22 2292 PL_curstash = PL_defstash;
3a1ee7e8 2293 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2294 PL_endav && !PL_minus_c)
2295 call_list(oldscope, PL_endav);
6224f72b
GS
2296#ifdef MYMALLOC
2297 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2298 dump_mstats("after execution: ");
2299#endif
37038d91 2300 ret = STATUS_EXIT;
14dd3ad8 2301 break;
6224f72b 2302 case 3:
312caa8e
CS
2303 if (PL_restartop) {
2304 POPSTACK_TO(PL_mainstack);
2305 goto redo_body;
6224f72b 2306 }
bf49b057 2307 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2308 FREETMPS;
14dd3ad8
GS
2309 ret = 1;
2310 break;
6224f72b
GS
2311 }
2312
14dd3ad8
GS
2313 JMPENV_POP;
2314 return ret;
312caa8e
CS
2315}
2316
14dd3ad8 2317
dd374669 2318STATIC void
14dd3ad8
GS
2319S_run_body(pTHX_ I32 oldscope)
2320{
97aff369 2321 dVAR;
6224f72b 2322 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2323 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2324
3280af22 2325 if (!PL_restartop) {
81d86705
NC
2326#ifdef PERL_MAD
2327 if (PL_xmlfp) {
2328 xmldump_all();
2329 exit(0); /* less likely to core dump than my_exit(0) */
2330 }
2331#endif
6224f72b 2332 DEBUG_x(dump_all());
cf2782cd 2333#ifdef DEBUGGING
ecae49c0
NC
2334 if (!DEBUG_q_TEST)
2335 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2336#endif
b900a521
JH
2337 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2338 PTR2UV(thr)));
6224f72b 2339
3280af22 2340 if (PL_minus_c) {
bf4acbe4 2341#ifdef MACOS_TRADITIONAL
e69a2255
JH
2342 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2343 (gMacPerl_ErrorFormat ? "# " : ""),
2344 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2345#else
bf49b057 2346 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2347#endif
6224f72b
GS
2348 my_exit(0);
2349 }
3280af22 2350 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2351 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2352 if (PL_initav)
2353 call_list(oldscope, PL_initav);
6224f72b
GS
2354 }
2355
2356 /* do it */
2357
3280af22 2358 if (PL_restartop) {
533c011a 2359 PL_op = PL_restartop;
3280af22 2360 PL_restartop = 0;
cea2e8a9 2361 CALLRUNOPS(aTHX);
6224f72b 2362 }
3280af22
NIS
2363 else if (PL_main_start) {
2364 CvDEPTH(PL_main_cv) = 1;
533c011a 2365 PL_op = PL_main_start;
cea2e8a9 2366 CALLRUNOPS(aTHX);
6224f72b 2367 }
f6b3007c
JH
2368 my_exit(0);
2369 /* NOTREACHED */
6224f72b
GS
2370}
2371
954c1994 2372/*
ccfc67b7
JH
2373=head1 SV Manipulation Functions
2374
954c1994
GS
2375=for apidoc p||get_sv
2376
2377Returns the SV of the specified Perl scalar. If C<create> is set and the
2378Perl variable does not exist then it will be created. If C<create> is not
2379set and the variable does not exist then NULL is returned.
2380
2381=cut
2382*/
2383
6224f72b 2384SV*
864dbfa3 2385Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2386{
2387 GV *gv;
6224f72b
GS
2388 gv = gv_fetchpv(name, create, SVt_PV);
2389 if (gv)
2390 return GvSV(gv);
a0714e2c 2391 return NULL;
6224f72b
GS
2392}
2393
954c1994 2394/*
ccfc67b7
JH
2395=head1 Array Manipulation Functions
2396
954c1994
GS
2397=for apidoc p||get_av
2398
2399Returns the AV of the specified Perl array. If C<create> is set and the
2400Perl variable does not exist then it will be created. If C<create> is not
2401set and the variable does not exist then NULL is returned.
2402
2403=cut
2404*/
2405
6224f72b 2406AV*
864dbfa3 2407Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2408{
c4420975 2409 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2410 if (create)
2411 return GvAVn(gv);
2412 if (gv)
2413 return GvAV(gv);
7d49f689 2414 return NULL;
6224f72b
GS
2415}
2416
954c1994 2417/*
ccfc67b7
JH
2418=head1 Hash Manipulation Functions
2419
954c1994
GS
2420=for apidoc p||get_hv
2421
2422Returns the HV of the specified Perl hash. If C<create> is set and the
2423Perl variable does not exist then it will be created. If C<create> is not
2424set and the variable does not exist then NULL is returned.
2425
2426=cut
2427*/
2428
6224f72b 2429HV*
864dbfa3 2430Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2431{
890ce7af 2432 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2433 if (create)
2434 return GvHVn(gv);
2435 if (gv)
2436 return GvHV(gv);
5c284bb0 2437 return NULL;
a0d0e21e
LW
2438}
2439
954c1994 2440/*
ccfc67b7
JH
2441=head1 CV Manipulation Functions
2442
954c1994
GS
2443=for apidoc p||get_cv
2444
2445Returns the CV of the specified Perl subroutine. If C<create> is set and
2446the Perl subroutine does not exist then it will be declared (which has the
2447same effect as saying C<sub name;>). If C<create> is not set and the
2448subroutine does not exist then NULL is returned.
2449
2450=cut
2451*/
2452
a0d0e21e 2453CV*
864dbfa3 2454Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2455{
c4420975 2456 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2457 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2458 /* XXX this is probably not what they think they're getting.
2459 * It has the same effect as "sub name;", i.e. just a forward
2460 * declaration! */
8ebc5c01 2461 if (create && !GvCVu(gv))
774d564b 2462 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2463 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2464 NULL, NULL);
a0d0e21e 2465 if (gv)
8ebc5c01 2466 return GvCVu(gv);
601f1833 2467 return NULL;
a0d0e21e
LW
2468}
2469
79072805
LW
2470/* Be sure to refetch the stack pointer after calling these routines. */
2471
954c1994 2472/*
ccfc67b7
JH
2473
2474=head1 Callback Functions
2475
954c1994
GS
2476=for apidoc p||call_argv
2477
2478Performs a callback to the specified Perl sub. See L<perlcall>.
2479
2480=cut
2481*/
2482
a0d0e21e 2483I32
8f42b153 2484Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2485
8ac85365
NIS
2486 /* See G_* flags in cop.h */
2487 /* null terminated arg list */
8990e307 2488{
97aff369 2489 dVAR;
a0d0e21e 2490 dSP;
8990e307 2491
924508f0 2492 PUSHMARK(SP);
a0d0e21e 2493 if (argv) {
8990e307 2494 while (*argv) {
a0d0e21e 2495 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2496 argv++;
2497 }
a0d0e21e 2498 PUTBACK;
8990e307 2499 }
864dbfa3 2500 return call_pv(sub_name, flags);
8990e307
LW
2501}
2502
954c1994
GS
2503/*
2504=for apidoc p||call_pv
2505
2506Performs a callback to the specified Perl sub. See L<perlcall>.
2507
2508=cut
2509*/
2510
a0d0e21e 2511I32
864dbfa3 2512Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2513 /* name of the subroutine */
2514 /* See G_* flags in cop.h */
a0d0e21e 2515{
864dbfa3 2516 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2517}
2518
954c1994
GS
2519/*
2520=for apidoc p||call_method
2521
2522Performs a callback to the specified Perl method. The blessed object must
2523be on the stack. See L<perlcall>.
2524
2525=cut
2526*/
2527
a0d0e21e 2528I32
864dbfa3 2529Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2530 /* name of the subroutine */
2531 /* See G_* flags in cop.h */
a0d0e21e 2532{
968b3946 2533 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2534}
2535
2536/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2537/*
2538=for apidoc p||call_sv
2539
2540Performs a callback to the Perl sub whose name is in the SV. See
2541L<perlcall>.
2542
2543=cut
2544*/
2545
a0d0e21e 2546I32
864dbfa3 2547Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2548 /* See G_* flags in cop.h */
a0d0e21e 2549{
27da23d5 2550 dVAR; dSP;
a0d0e21e 2551 LOGOP myop; /* fake syntax tree node */
968b3946 2552 UNOP method_op;
aa689395 2553 I32 oldmark;
13689cfe 2554 volatile I32 retval = 0;
a0d0e21e 2555 I32 oldscope;
54310121 2556 bool oldcatch = CATCH_GET;
6224f72b 2557 int ret;
c4420975 2558 OP* const oldop = PL_op;
db36c5a1 2559 dJMPENV;
1e422769 2560
a0d0e21e
LW
2561 if (flags & G_DISCARD) {
2562 ENTER;
2563 SAVETMPS;
2564 }
2565
aa689395 2566 Zero(&myop, 1, LOGOP);
5f66b61c 2567 myop.op_next = NULL;
f51d4af5 2568 if (!(flags & G_NOARGS))
aa689395 2569 myop.op_flags |= OPf_STACKED;
54310121
PP
2570 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2571 (flags & G_ARRAY) ? OPf_WANT_LIST :
2572 OPf_WANT_SCALAR);
462e5cf6 2573 SAVEOP();
533c011a 2574 PL_op = (OP*)&myop;
aa689395 2575
3280af22
NIS
2576 EXTEND(PL_stack_sp, 1);
2577 *++PL_stack_sp = sv;
aa689395 2578 oldmark = TOPMARK;
3280af22 2579 oldscope = PL_scopestack_ix;
a0d0e21e 2580
3280af22 2581 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2582 /* Handle first BEGIN of -d. */
3280af22 2583 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2584 /* Try harder, since this may have been a sighandler, thus
2585 * curstash may be meaningless. */
3280af22 2586 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2587 && !(flags & G_NODEBUG))
533c011a 2588 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2589
968b3946
GS
2590 if (flags & G_METHOD) {
2591 Zero(&method_op, 1, UNOP);
2592 method_op.op_next = PL_op;
2593 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2594 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2595 PL_op = (OP*)&method_op;
968b3946
GS
2596 }
2597
312caa8e 2598 if (!(flags & G_EVAL)) {
0cdb2077 2599 CATCH_SET(TRUE);
14dd3ad8 2600 call_body((OP*)&myop, FALSE);
312caa8e 2601 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2602 CATCH_SET(oldcatch);
312caa8e
CS
2603 }
2604 else {
d78bda3d 2605 myop.op_other = (OP*)&myop;
3280af22 2606 PL_markstack_ptr--;
4633a7c4
LW
2607 /* we're trying to emulate pp_entertry() here */
2608 {
c09156bb 2609 register PERL_CONTEXT *cx;
f54cb97a 2610 const I32 gimme = GIMME_V;
ac27b0f5 2611
4633a7c4
LW
2612 ENTER;
2613 SAVETMPS;
ac27b0f5 2614
1d76a5c3 2615 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2616 PUSHEVAL(cx, 0, 0);
533c011a 2617 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2618
faef0170 2619 PL_in_eval = EVAL_INEVAL;
4633a7c4 2620 if (flags & G_KEEPERR)
faef0170 2621 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2622 else
c69006e4 2623 sv_setpvn(ERRSV,"",0);
4633a7c4 2624 }
3280af22 2625 PL_markstack_ptr++;
a0d0e21e 2626
14dd3ad8 2627 JMPENV_PUSH(ret);
6224f72b
GS
2628 switch (ret) {
2629 case 0:
14dd3ad8
GS
2630 redo_body:
2631 call_body((OP*)&myop, FALSE);
312caa8e
CS
2632 retval = PL_stack_sp - (PL_stack_base + oldmark);
2633 if (!(flags & G_KEEPERR))
c69006e4 2634 sv_setpvn(ERRSV,"",0);
a0d0e21e 2635 break;
6224f72b 2636 case 1:
f86702cc 2637 STATUS_ALL_FAILURE;
a0d0e21e 2638 /* FALL THROUGH */
6224f72b 2639 case 2:
a0d0e21e 2640 /* my_exit() was called */
3280af22 2641 PL_curstash = PL_defstash;
a0d0e21e 2642 FREETMPS;
14dd3ad8 2643 JMPENV_POP;
cc3604b1 2644 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2645 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2646 my_exit_jump();
a0d0e21e 2647 /* NOTREACHED */
6224f72b 2648 case 3:
3280af22 2649 if (PL_restartop) {
533c011a 2650 PL_op = PL_restartop;
3280af22 2651 PL_restartop = 0;
312caa8e 2652 goto redo_body;
a0d0e21e 2653 }
3280af22 2654 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2655 if (flags & G_ARRAY)
2656 retval = 0;
2657 else {
2658 retval = 1;
3280af22 2659 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2660 }
312caa8e 2661 break;
a0d0e21e 2662 }
a0d0e21e 2663
3280af22 2664 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2665 SV **newsp;
2666 PMOP *newpm;
2667 I32 gimme;
c09156bb 2668 register PERL_CONTEXT *cx;
a0a2876f
LW
2669 I32 optype;
2670
2671 POPBLOCK(cx,newpm);
2672 POPEVAL(cx);
3280af22 2673 PL_curpm = newpm;
a0a2876f 2674 LEAVE;
9d4ba2ae
AL
2675 PERL_UNUSED_VAR(newsp);
2676 PERL_UNUSED_VAR(gimme);
2677 PERL_UNUSED_VAR(optype);
a0d0e21e 2678 }
14dd3ad8 2679 JMPENV_POP;
a0d0e21e 2680 }
1e422769 2681
a0d0e21e 2682 if (flags & G_DISCARD) {
3280af22 2683 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2684 retval = 0;
2685 FREETMPS;
2686 LEAVE;
2687 }
533c011a 2688 PL_op = oldop;
a0d0e21e
LW
2689 return retval;
2690}
2691
312caa8e 2692STATIC void
dd374669 2693S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2694{
97aff369 2695 dVAR;
312caa8e
CS
2696 if (PL_op == myop) {
2697 if (is_eval)
f807eda9 2698 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2699 else
f807eda9 2700 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2701 }
2702 if (PL_op)
cea2e8a9 2703 CALLRUNOPS(aTHX);
312caa8e
CS
2704}
2705
6e72f9df 2706/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2707
954c1994
GS
2708/*
2709=for apidoc p||eval_sv
2710
2711Tells Perl to C<eval> the string in the SV.
2712
2713=cut
2714*/
2715
a0d0e21e 2716I32
864dbfa3 2717Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2718
8ac85365 2719 /* See G_* flags in cop.h */
a0d0e21e 2720{
97aff369 2721 dVAR;
924508f0 2722 dSP;
a0d0e21e 2723 UNOP myop; /* fake syntax tree node */
8fa7f367 2724 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2725 volatile I32 retval = 0;
6224f72b 2726 int ret;
c4420975 2727 OP* const oldop = PL_op;
db36c5a1 2728 dJMPENV;
84902520 2729
4633a7c4
LW
2730 if (flags & G_DISCARD) {
2731 ENTER;
2732 SAVETMPS;
2733 }
2734
462e5cf6 2735 SAVEOP();
533c011a
NIS
2736 PL_op = (OP*)&myop;
2737 Zero(PL_op, 1, UNOP);
3280af22
NIS
2738 EXTEND(PL_stack_sp, 1);
2739 *++PL_stack_sp = sv;
79072805 2740
4633a7c4
LW
2741 if (!(flags & G_NOARGS))
2742 myop.op_flags = OPf_STACKED;
5f66b61c 2743 myop.op_next = NULL;
6e72f9df 2744 myop.op_type = OP_ENTEREVAL;
54310121
PP
2745 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2746 (flags & G_ARRAY) ? OPf_WANT_LIST :
2747 OPf_WANT_SCALAR);
6e72f9df
PP
2748 if (flags & G_KEEPERR)
2749 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2750
dedbcade
DM
2751 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2752 * before a PUSHEVAL, which corrupts the stack after a croak */
2753 TAINT_PROPER("eval_sv()");
2754
14dd3ad8 2755 JMPENV_PUSH(ret);
6224f72b
GS
2756 switch (ret) {
2757 case 0:
14dd3ad8
GS
2758 redo_body:
2759 call_body((OP*)&myop,TRUE);
312caa8e
CS
2760 retval = PL_stack_sp - (PL_stack_base + oldmark);
2761 if (!(flags & G_KEEPERR))
c69006e4 2762 sv_setpvn(ERRSV,"",0);
4633a7c4 2763 break;
6224f72b 2764 case 1:
f86702cc 2765 STATUS_ALL_FAILURE;
4633a7c4 2766 /* FALL THROUGH */
6224f72b 2767 case 2:
4633a7c4 2768 /* my_exit() was called */
3280af22 2769 PL_curstash = PL_defstash;
4633a7c4 2770 FREETMPS;
14dd3ad8 2771 JMPENV_POP;
cc3604b1 2772 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2773 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2774 my_exit_jump();
4633a7c4 2775 /* NOTREACHED */
6224f72b 2776 case 3:
3280af22 2777 if (PL_restartop) {
533c011a 2778 PL_op = PL_restartop;
3280af22 2779 PL_restartop = 0;
312caa8e 2780 goto redo_body;
4633a7c4 2781 }
3280af22 2782 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2783 if (flags & G_ARRAY)
2784 retval = 0;
2785 else {
2786 retval = 1;
3280af22 2787 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2788 }
312caa8e 2789 break;
4633a7c4
LW
2790 }
2791
14dd3ad8 2792 JMPENV_POP;
4633a7c4 2793 if (flags & G_DISCARD) {
3280af22 2794 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2795 retval = 0;
2796 FREETMPS;
2797 LEAVE;
2798 }
533c011a 2799 PL_op = oldop;
4633a7c4
LW
2800 return retval;
2801}
2802
954c1994
GS
2803/*
2804=for apidoc p||eval_pv
2805
2806Tells Perl to C<eval> the given string and return an SV* result.
2807
2808=cut
2809*/
2810
137443ea 2811SV*
864dbfa3 2812Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2813{
97aff369 2814 dVAR;
137443ea
PP
2815 dSP;
2816 SV* sv = newSVpv(p, 0);
2817
864dbfa3 2818 eval_sv(sv, G_SCALAR);
137443ea
PP
2819 SvREFCNT_dec(sv);
2820
2821 SPAGAIN;
2822 sv = POPs;
2823 PUTBACK;
2824
2d8e6c8d 2825 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2826 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2827 }
137443ea
PP
2828
2829 return sv;
2830}
2831
4633a7c4
LW
2832/* Require a module. */
2833
954c1994 2834/*
ccfc67b7
JH
2835=head1 Embedding Functions
2836
954c1994
GS
2837=for apidoc p||require_pv
2838
7d3fb230
BS
2839Tells Perl to C<require> the file named by the string argument. It is
2840analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2841implemented that way; consider using load_module instead.
954c1994 2842
7d3fb230 2843=cut */
954c1994 2844
4633a7c4 2845void
864dbfa3 2846Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2847{
97aff369 2848 dVAR;
d3acc0f7 2849 dSP;
97aff369 2850 SV* sv;
e788e7d3 2851 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2852 PUTBACK;
be41e5d9
NC
2853 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2854 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2855 SPAGAIN;
2856 POPSTACK;
79072805
LW
2857}
2858
79072805 2859void
e1ec3a88 2860Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2861{
71315bf2 2862 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2863
c4420975 2864 if (gv)
14befaf4 2865 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2866}
2867
76e3520e 2868STATIC void
e1ec3a88 2869S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2870{
ab821d7f 2871 /* This message really ought to be max 23 lines.
75c72d73 2872 * Removed -h because the user already knows that option. Others? */
fb73857a 2873
27da23d5 2874 static const char * const usage_msg[] = {
aefc56c5
SF
2875"-0[octal] specify record separator (\\0, if no argument)",
2876"-A[mod][=pattern] activate all/given assertions",
2877"-a autosplit mode with -n or -p (splits $_ into @F)",
2878"-C[number/list] enables the listed Unicode features",
2879"-c check syntax only (runs BEGIN and CHECK blocks)",
2880"-d[:debugger] run program under debugger",
2881"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2882"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2883"-E program like -e, but enables all optional features",
aefc56c5 2884"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2885"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2886"-i[extension] edit <> files in place (makes backup if extension supplied)",
2887"-Idirectory specify @INC/#include directory (several -I's allowed)",
2888"-l[octal] enable line ending processing, specifies line terminator",
2889"-[mM][-]module execute \"use/no module...\" before executing program",
2890"-n assume \"while (<>) { ... }\" loop around program",
2891"-p assume loop like -n but print line also, like sed",
2892"-P run program through C preprocessor before compilation",
2893"-s enable rudimentary parsing for switches after programfile",
2894"-S look for programfile using PATH environment variable",
2895"-t enable tainting warnings",
2896"-T enable tainting checks",
2897"-u dump core after parsing program",
2898"-U allow unsafe operations",
2899"-v print version, subversion (includes VERY IMPORTANT perl info)",
2900"-V[:variable] print configuration summary (or a single Config.pm variable)",
2901"-w enable many useful warnings (RECOMMENDED)",
2902"-W enable all warnings",
2903"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2904"-X disable all warnings",
fb73857a
PP
2905"\n",
2906NULL
2907};
27da23d5 2908 const char * const *p = usage_msg;
fb73857a 2909
b0e47665
GS
2910 PerlIO_printf(PerlIO_stdout(),
2911 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2912 name);
fb73857a 2913 while (*p)
b0e47665 2914 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2915}
2916
b4ab917c
DM
2917/* convert a string of -D options (or digits) into an int.
2918 * sets *s to point to the char after the options */
2919
2920#ifdef DEBUGGING
2921int
e1ec3a88 2922Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2923{
27da23d5 2924 static const char * const usage_msgd[] = {
e6e64d9b
JC
2925 " Debugging flag values: (see also -d)",
2926 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2927 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2928 " l Context (loop) stack processing",
2929 " t Trace execution",
2930 " o Method and overloading resolution",
2931 " c String/numeric conversions",
2932 " P Print profiling info, preprocessor command for -P, source file input state",
2933 " m Memory allocation",
2934 " f Format processing",
2935 " r Regular expression parsing and execution",
2936 " x Syntax tree dump",
3679267a 2937 " u Tainting checks",
e6e64d9b
JC
2938 " H Hash dump -- usurps values()",
2939 " X Scratchpad allocation",
2940 " D Cleaning up",
2941 " S Thread synchronization",
2942 " T Tokenising",
2943 " R Include reference counts of dumped variables (eg when using -Ds)",
2944 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2945 " v Verbose: use in conjunction with other flags",
2946 " C Copy On Write",
2947 " A Consistency checks on internal structures",
3679267a 2948 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2949 NULL
2950 };
b4ab917c
DM
2951 int i = 0;
2952 if (isALPHA(**s)) {
2953 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2954 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2955
2956 for (; isALNUM(**s); (*s)++) {
c4420975 2957 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2958 if (d)
2959 i |= 1 << (d - debopts);
2960 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2961 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2962 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2963 }
2964 }
e6e64d9b 2965 else if (isDIGIT(**s)) {
b4ab917c
DM
2966 i = atoi(*s);
2967 for (; isALNUM(**s); (*s)++) ;
2968 }
ddcf8bc1 2969 else if (givehelp) {
06e869a4 2970 const char *const *p = usage_msgd;
e6e64d9b
JC
2971 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2972 }
b4ab917c
DM
2973# ifdef EBCDIC
2974 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2975 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2976 "-Dp not implemented on this platform\n");
2977# endif
2978 return i;
2979}
2980#endif
2981
79072805
LW
2982/* This routine handles any switches that can be given during run */
2983
2984char *
97bd5664 2985Perl_moreswitches(pTHX_ char *s)
79072805 2986{
27da23d5 2987 dVAR;
84c133a0 2988 UV rschar;
79072805
LW
2989
2990 switch (*s) {
2991 case '0':
a863c7d1 2992 {
f2095865 2993 I32 flags = 0;
a3b680e6 2994 STRLEN numlen;
f2095865
JH
2995
2996 SvREFCNT_dec(PL_rs);
2997 if (s[1] == 'x' && s[2]) {
a3b680e6 2998 const char *e = s+=2;
f2095865
JH
2999 U8 *tmps;
3000
a3b680e6
AL
3001 while (*e)
3002 e++;
f2095865
JH
3003 numlen = e - s;
3004 flags = PERL_SCAN_SILENT_ILLDIGIT;
3005 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3006 if (s + numlen < e) {
3007 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3008 numlen = 0;
3009 s--;
3010 }
396482e1 3011 PL_rs = newSVpvs("");
c5661c80 3012 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3013 tmps = (U8*)SvPVX(PL_rs);
3014 uvchr_to_utf8(tmps, rschar);
3015 SvCUR_set(PL_rs, UNISKIP(rschar));
3016 SvUTF8_on(PL_rs);
3017 }
3018 else {
3019 numlen = 4;
3020 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3021 if (rschar & ~((U8)~0))
3022 PL_rs = &PL_sv_undef;
3023 else if (!rschar && numlen >= 2)
396482e1 3024 PL_rs = newSVpvs("");
f2095865
JH
3025 else {
3026 char ch = (char)rschar;
3027 PL_rs = newSVpvn(&ch, 1);
3028 }
3029 }
800633c3 3030 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3031 return s + numlen;
a863c7d1 3032 }
46487f74 3033 case 'C':
a05d7ebb 3034 s++;
dd374669 3035 PL_unicode = parse_unicode_opts( (const char **)&s );
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
NC
3110 {
3111 const char *start = ++s;
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
PP
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
PP
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
PP
3211 while(isALNUM(*s) || *s==':') ++s;
3212 if (*s != '=') {
11343788 3213 sv_catpv(sv, start);
c07a80fd
PP
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
PP
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
PP
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",
d7aa5382
JP
3281 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
PP
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)",
3301 (int)LOCAL_PATCH_COUNT,
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
PP
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
MS
3389 if (!specialWARN(PL_compiling.cop_warnings))
3390 SvREFCNT_dec(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
MS
3396 if (!specialWARN(PL_compiling.cop_warnings))
3397 SvREFCNT_dec(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
PP
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
cb68f92d
GS
3495}
3496
76e3520e 3497STATIC void
cea2e8a9 3498S_init_main_stash(pTHX)
79072805 3499{
97aff369 3500 dVAR;
463ee0b2 3501 GV *gv;
6e72f9df