This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Fix a couple of compilation warnings
[perl5.git] / perl.c
CommitLineData
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
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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
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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
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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
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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
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
NC
160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
e6827a76
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163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
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170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76
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173 }
174 else {
175 PERL_SET_THX(my_perl);
176 }
177}
06d86050 178
32e30700
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179#ifdef PERL_IMPLICIT_SYS
180PerlInterpreter *
7766f137
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181perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
182 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
183 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
184 struct IPerlDir* ipD, struct IPerlSock* ipS,
185 struct IPerlProc* ipP)
186{
187 PerlInterpreter *my_perl;
9f653bb5 188 /* Newx() needs interpreter, so call malloc() instead */
32e30700 189 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 190 S_init_tls_and_interp(my_perl);
32e30700
GS
191 Zero(my_perl, 1, PerlInterpreter);
192 PL_Mem = ipM;
7766f137
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193 PL_MemShared = ipMS;
194 PL_MemParse = ipMP;
32e30700
GS
195 PL_Env = ipE;
196 PL_StdIO = ipStd;
197 PL_LIO = ipLIO;
198 PL_Dir = ipD;
199 PL_Sock = ipS;
200 PL_Proc = ipP;
7cb608b5 201 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 202
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203 return my_perl;
204}
205#else
954c1994
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206
207/*
ccfc67b7
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208=head1 Embedding Functions
209
954c1994
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210=for apidoc perl_alloc
211
212Allocates a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
93a17b20 217PerlInterpreter *
cea2e8a9 218perl_alloc(void)
79072805 219{
cea2e8a9 220 PerlInterpreter *my_perl;
79072805 221
9f653bb5 222 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 223 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 224
e6827a76 225 S_init_tls_and_interp(my_perl);
7cb608b5 226#ifndef PERL_TRACK_MEMPOOL
07409e01 227 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
228#else
229 Zero(my_perl, 1, PerlInterpreter);
230 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
231 return my_perl;
232#endif
79072805 233}
32e30700 234#endif /* PERL_IMPLICIT_SYS */
79072805 235
954c1994
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236/*
237=for apidoc perl_construct
238
239Initializes a new Perl interpreter. See L<perlembed>.
240
241=cut
242*/
243
79072805 244void
0cb96387 245perl_construct(pTHXx)
79072805 246{
27da23d5 247 dVAR;
96a5add6 248 PERL_UNUSED_CONTEXT;
8990e307 249#ifdef MULTIPLICITY
54aff467 250 init_interp();
ac27b0f5 251 PL_perl_destruct_level = 1;
54aff467
GS
252#else
253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
33f46ff6 256 /* Init the real globals (and main thread)? */
3280af22 257 if (!PL_linestr) {
2aea9f8a
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258 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
259
561b68a9 260 PL_linestr = newSV(79);
3280af22 261 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 262
3280af22 263 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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264 /* set read-only and try to insure than we wont see REFCNT==0
265 very often */
266
3280af22
NIS
267 SvREADONLY_on(&PL_sv_undef);
268 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 269
3280af22 270 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
271 /* value lookup in void context - happens to have the side effect
272 of caching the numeric forms. */
273 SvIV(&PL_sv_no);
3280af22
NIS
274 SvNV(&PL_sv_no);
275 SvREADONLY_on(&PL_sv_no);
276 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 277
3280af22 278 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 279 SvIV(&PL_sv_yes);
3280af22
NIS
280 SvNV(&PL_sv_yes);
281 SvREADONLY_on(&PL_sv_yes);
282 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
283
284 SvREADONLY_on(&PL_sv_placeholder);
285 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 286 }
79072805 287
8aad04aa 288 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 289#ifdef PERL_USES_PL_PIDSTATUS
3280af22 290 PL_pidstatus = newHV();
ca0c25f6 291#endif
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292 }
293
396482e1 294 PL_rs = newSVpvs("\n");
dc92893f 295
cea2e8a9 296 init_stacks();
79072805 297
748a9306 298 init_ids();
3280af22 299 PL_lex_state = LEX_NOTPARSING;
a5f75d66 300
312caa8e 301 JMPENV_BOOTSTRAP;
f86702cc
PP
302 STATUS_ALL_SUCCESS;
303
0672f40e 304 init_i18nl10n(1);
36477c24 305 SET_NUMERIC_STANDARD();
0b5b802d 306
ab821d7f 307#if defined(LOCAL_PATCH_COUNT)
3280af22 308 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
309#endif
310
52853b95
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311#ifdef HAVE_INTERP_INTERN
312 sys_intern_init();
313#endif
314
3a1ee7e8 315 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 316
3280af22
NIS
317 PL_fdpid = newAV(); /* for remembering popen pids by fd */
318 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 319 PL_errors = newSVpvs("");
48c6b404 320 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
321 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
322 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 323#ifdef USE_ITHREADS
13137afc
AB
324 PL_regex_padav = newAV();
325 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
326 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 327#endif
e5dd39fc 328#ifdef USE_REENTRANT_API
59bd0823 329 Perl_reentrant_init(aTHX);
e5dd39fc 330#endif
3d47000e
AB
331
332 /* Note that strtab is a rather special HV. Assumptions are made
333 about not iterating on it, and not adding tie magic to it.
334 It is properly deallocated in perl_destruct() */
335 PL_strtab = newHV();
336
3d47000e
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337 HvSHAREKEYS_off(PL_strtab); /* mandatory */
338 hv_ksplit(PL_strtab, 512);
339
0631ea03
AB
340#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
341 _dyld_lookup_and_bind
342 ("__environ", (unsigned long *) &environ_pointer, NULL);
343#endif /* environ */
344
2f42fcb0
JH
345#ifndef PERL_MICRO
346# ifdef USE_ENVIRON_ARRAY
0631ea03 347 PL_origenviron = environ;
2f42fcb0 348# endif
0631ea03
AB
349#endif
350
5311654c 351 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 352 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
353 * BeOS has those, but returns the wrong value.
354 * The HZ if not originally defined has been by now
355 * been defined as CLK_TCK, if available. */
dbc1d986 356#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
357 PL_clocktick = sysconf(_SC_CLK_TCK);
358 if (PL_clocktick <= 0)
359#endif
360 PL_clocktick = HZ;
361
081fc587
AB
362 PL_stashcache = newHV();
363
e6830b13
NC
364 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
365 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 366
27da23d5
JH
367#ifdef HAS_MMAP
368 if (!PL_mmap_page_size) {
369#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
370 {
371 SETERRNO(0, SS_NORMAL);
372# ifdef _SC_PAGESIZE
373 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
374# else
375 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
376# endif
377 if ((long) PL_mmap_page_size < 0) {
378 if (errno) {
44f8325f 379 SV * const error = ERRSV;
d4c19fe8 380 SvUPGRADE(error, SVt_PV);
0510663f 381 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
382 }
383 else
384 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
385 }
386 }
387#else
388# ifdef HAS_GETPAGESIZE
389 PL_mmap_page_size = getpagesize();
390# else
391# if defined(I_SYS_PARAM) && defined(PAGESIZE)
392 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
393# endif
394# endif
395#endif
396 if (PL_mmap_page_size <= 0)
397 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
398 (IV) PL_mmap_page_size);
399 }
400#endif /* HAS_MMAP */
401
402#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
403 PL_timesbase.tms_utime = 0;
404 PL_timesbase.tms_stime = 0;
405 PL_timesbase.tms_cutime = 0;
406 PL_timesbase.tms_cstime = 0;
407#endif
408
5336380d
NC
409#ifdef PERL_MAD
410 PL_curforce = -1;
411#endif
412
8990e307 413 ENTER;
79072805
LW
414}
415
954c1994 416/*
62375a60
NIS
417=for apidoc nothreadhook
418
419Stub that provides thread hook for perl_destruct when there are
420no threads.
421
422=cut
423*/
424
425int
4e9e3734 426Perl_nothreadhook(pTHX)
62375a60 427{
96a5add6 428 PERL_UNUSED_CONTEXT;
62375a60
NIS
429 return 0;
430}
431
41e4abd8
NC
432#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
433void
434Perl_dump_sv_child(pTHX_ SV *sv)
435{
436 ssize_t got;
bf357333
NC
437 const int sock = PL_dumper_fd;
438 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
439 union control_un control;
440 struct msghdr msg;
808ad2d0 441 struct iovec vec[2];
bf357333 442 struct cmsghdr *cmptr;
808ad2d0
NC
443 int returned_errno;
444 unsigned char buffer[256];
41e4abd8 445
bf357333 446 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
447 return;
448
449 PerlIO_flush(Perl_debug_log);
450
bf357333
NC
451 /* All these shenanigans are to pass a file descriptor over to our child for
452 it to dump out to. We can't let it hold open the file descriptor when it
453 forks, as the file descriptor it will dump to can turn out to be one end
454 of pipe that some other process will wait on for EOF. (So as it would
455 be open, the wait would be forever. */
456
457 msg.msg_control = control.control;
458 msg.msg_controllen = sizeof(control.control);
459 /* We're a connected socket so we don't need a destination */
460 msg.msg_name = NULL;
461 msg.msg_namelen = 0;
462 msg.msg_iov = vec;
808ad2d0 463 msg.msg_iovlen = 1;
bf357333
NC
464
465 cmptr = CMSG_FIRSTHDR(&msg);
466 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
467 cmptr->cmsg_level = SOL_SOCKET;
468 cmptr->cmsg_type = SCM_RIGHTS;
469 *((int *)CMSG_DATA(cmptr)) = 1;
470
471 vec[0].iov_base = (void*)&sv;
472 vec[0].iov_len = sizeof(sv);
473 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
474
475 if(got < 0) {
bf357333 476 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
477 abort();
478 }
bf357333
NC
479 if(got < sizeof(sv)) {
480 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
481 abort();
482 }
483
808ad2d0
NC
484 /* Return protocol is
485 int: errno value
486 unsigned char: length of location string (0 for empty)
487 unsigned char*: string (not terminated)
488 */
489 vec[0].iov_base = (void*)&returned_errno;
490 vec[0].iov_len = sizeof(returned_errno);
491 vec[1].iov_base = buffer;
492 vec[1].iov_len = 1;
493
494 got = readv(sock, vec, 2);
41e4abd8
NC
495
496 if(got < 0) {
497 perror("Debug leaking scalars parent read failed");
808ad2d0 498 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
499 abort();
500 }
808ad2d0 501 if(got < sizeof(returned_errno) + 1) {
41e4abd8 502 perror("Debug leaking scalars parent short read");
808ad2d0 503 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
504 abort();
505 }
506
808ad2d0
NC
507 if (*buffer) {
508 got = read(sock, buffer + 1, *buffer);
509 if(got < 0) {
510 perror("Debug leaking scalars parent read 2 failed");
511 PerlIO_flush(PerlIO_stderr());
512 abort();
513 }
514
515 if(got < *buffer) {
516 perror("Debug leaking scalars parent short read 2");
517 PerlIO_flush(PerlIO_stderr());
518 abort();
519 }
520 }
521
522 if (returned_errno || *buffer) {
523 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
524 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
525 returned_errno, strerror(returned_errno));
41e4abd8
NC
526 }
527}
528#endif
529
62375a60 530/*
954c1994
GS
531=for apidoc perl_destruct
532
533Shuts down a Perl interpreter. See L<perlembed>.
534
535=cut
536*/
537
31d77e54 538int
0cb96387 539perl_destruct(pTHXx)
79072805 540{
27da23d5 541 dVAR;
7c474504 542 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 543 HV *hv;
2aa47728 544#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
545 pid_t child;
546#endif
8990e307 547
96a5add6 548 PERL_UNUSED_CONTEXT;
9d4ba2ae 549
7766f137
GS
550 /* wait for all pseudo-forked children to finish */
551 PERL_WAIT_FOR_CHILDREN;
552
3280af22 553 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
554#ifdef DEBUGGING
555 {
9d4ba2ae
AL
556 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
557 if (s) {
e1ec3a88 558 const int i = atoi(s);
5f05dabc
PP
559 if (destruct_level < i)
560 destruct_level = i;
561 }
4633a7c4
LW
562 }
563#endif
564
27da23d5 565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
566 dJMPENV;
567 int x = 0;
568
569 JMPENV_PUSH(x);
1b6737cc 570 PERL_UNUSED_VAR(x);
f3faeb53
AB
571 if (PL_endav && !PL_minus_c)
572 call_list(PL_scopestack_ix, PL_endav);
573 JMPENV_POP;
26f423df 574 }
f3faeb53 575 LEAVE;
a0d0e21e
LW
576 FREETMPS;
577
e00b64d4 578 /* Need to flush since END blocks can produce output */
f13a2bc0 579 my_fflush_all();
e00b64d4 580
62375a60
NIS
581 if (CALL_FPTR(PL_threadhook)(aTHX)) {
582 /* Threads hook has vetoed further cleanup */
37038d91 583 return STATUS_EXIT;
62375a60
NIS
584 }
585
2aa47728
NC
586#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
587 if (destruct_level != 0) {
588 /* Fork here to create a child. Our child's job is to preserve the
589 state of scalars prior to destruction, so that we can instruct it
590 to dump any scalars that we later find have leaked.
591 There's no subtlety in this code - it assumes POSIX, and it doesn't
592 fail gracefully */
593 int fd[2];
594
595 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
596 perror("Debug leaking scalars socketpair failed");
597 abort();
598 }
599
600 child = fork();
601 if(child == -1) {
602 perror("Debug leaking scalars fork failed");
603 abort();
604 }
605 if (!child) {
606 /* We are the child */
3125a5a4
NC
607 const int sock = fd[1];
608 const int debug_fd = PerlIO_fileno(Perl_debug_log);
609 int f;
808ad2d0
NC
610 const char *where;
611 /* Our success message is an integer 0, and a char 0 */
612 static const char success[sizeof(int) + 1];
3125a5a4 613
2aa47728 614 close(fd[0]);
2aa47728 615
3125a5a4
NC
616 /* We need to close all other file descriptors otherwise we end up
617 with interesting hangs, where the parent closes its end of a
618 pipe, and sits waiting for (another) child to terminate. Only
619 that child never terminates, because it never gets EOF, because
bf357333
NC
620 we also have the far end of the pipe open. We even need to
621 close the debugging fd, because sometimes it happens to be one
622 end of a pipe, and a process is waiting on the other end for
623 EOF. Normally it would be closed at some point earlier in
624 destruction, but if we happen to cause the pipe to remain open,
625 EOF never occurs, and we get an infinite hang. Hence all the
626 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
627
628 f = sysconf(_SC_OPEN_MAX);
629 if(f < 0) {
808ad2d0
NC
630 where = "sysconf failed";
631 goto abort;
3125a5a4
NC
632 }
633 while (f--) {
634 if (f == sock)
635 continue;
3125a5a4
NC
636 close(f);
637 }
638
2aa47728
NC
639 while (1) {
640 SV *target;
bf357333
NC
641 union control_un control;
642 struct msghdr msg;
643 struct iovec vec[1];
644 struct cmsghdr *cmptr;
645 ssize_t got;
646 int got_fd;
647
648 msg.msg_control = control.control;
649 msg.msg_controllen = sizeof(control.control);
650 /* We're a connected socket so we don't need a source */
651 msg.msg_name = NULL;
652 msg.msg_namelen = 0;
653 msg.msg_iov = vec;
654 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
655
656 vec[0].iov_base = (void*)&target;
657 vec[0].iov_len = sizeof(target);
658
659 got = recvmsg(sock, &msg, 0);
2aa47728
NC
660
661 if(got == 0)
662 break;
663 if(got < 0) {
808ad2d0
NC
664 where = "recv failed";
665 goto abort;
2aa47728
NC
666 }
667 if(got < sizeof(target)) {
808ad2d0
NC
668 where = "short recv";
669 goto abort;
2aa47728 670 }
bf357333 671
808ad2d0
NC
672 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
673 where = "no cmsg";
674 goto abort;
675 }
676 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
677 where = "wrong cmsg_len";
678 goto abort;
679 }
680 if(cmptr->cmsg_level != SOL_SOCKET) {
681 where = "wrong cmsg_level";
682 goto abort;
683 }
684 if(cmptr->cmsg_type != SCM_RIGHTS) {
685 where = "wrong cmsg_type";
686 goto abort;
687 }
bf357333
NC
688
689 got_fd = *(int*)CMSG_DATA(cmptr);
690 /* For our last little bit of trickery, put the file descriptor
691 back into Perl_debug_log, as if we never actually closed it
692 */
808ad2d0
NC
693 if(got_fd != debug_fd) {
694 if (dup2(got_fd, debug_fd) == -1) {
695 where = "dup2";
696 goto abort;
697 }
698 }
2aa47728 699 sv_dump(target);
bf357333 700
2aa47728
NC
701 PerlIO_flush(Perl_debug_log);
702
808ad2d0 703 got = write(sock, &success, sizeof(success));
2aa47728
NC
704
705 if(got < 0) {
808ad2d0
NC
706 where = "write failed";
707 goto abort;
2aa47728 708 }
808ad2d0
NC
709 if(got < sizeof(success)) {
710 where = "short write";
711 goto abort;
2aa47728
NC
712 }
713 }
714 _exit(0);
808ad2d0
NC
715 abort:
716 {
717 int send_errno = errno;
718 unsigned char length = (unsigned char) strlen(where);
719 struct iovec failure[3] = {
720 {(void*)&send_errno, sizeof(send_errno)},
721 {&length, 1},
722 {(void*)where, length}
723 };
724 int got = writev(sock, failure, 3);
725 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
726 in the parent if we try to read from the socketpair after the
727 child has exited, even if there was data to read.
728 So sleep a bit to give the parent a fighting chance of
729 reading the data. */
730 sleep(2);
731 _exit((got == -1) ? errno : 0);
732 }
bf357333 733 /* End of child. */
2aa47728 734 }
41e4abd8 735 PL_dumper_fd = fd[0];
2aa47728
NC
736 close(fd[1]);
737 }
738#endif
739
ff0cee69
PP
740 /* We must account for everything. */
741
742 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
743 /* Do this now, because destroying ops can cause new SVs to be generated
744 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
745 PL_curcop to point to a valid op from which the filename structure
746 member is copied. */
747 PL_curcop = &PL_compiling;
3280af22 748 if (PL_main_root) {
4e380990
DM
749 /* ensure comppad/curpad to refer to main's pad */
750 if (CvPADLIST(PL_main_cv)) {
751 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
752 }
3280af22 753 op_free(PL_main_root);
5f66b61c 754 PL_main_root = NULL;
a0d0e21e 755 }
5f66b61c 756 PL_main_start = NULL;
3280af22 757 SvREFCNT_dec(PL_main_cv);
601f1833 758 PL_main_cv = NULL;
24d3c518 759 PL_dirty = TRUE;
ff0cee69 760
13621cfb
NIS
761 /* Tell PerlIO we are about to tear things apart in case
762 we have layers which are using resources that should
763 be cleaned up now.
764 */
765
766 PerlIO_destruct(aTHX);
767
3280af22 768 if (PL_sv_objcount) {
a0d0e21e
LW
769 /*
770 * Try to destruct global references. We do this first so that the
771 * destructors and destructees still exist. Some sv's might remain.
772 * Non-referenced objects are on their own.
773 */
a0d0e21e 774 sv_clean_objs();
bf9cdc68 775 PL_sv_objcount = 0;
a0de6cf5 776 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 777 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
a0d0e21e 795 if (destruct_level == 0){
8990e307 796
a0d0e21e 797 DEBUG_P(debprofdump());
ac27b0f5 798
56a2bab7
NIS
799#if defined(PERLIO_LAYERS)
800 /* No more IO - including error messages ! */
801 PerlIO_cleanup(aTHX);
802#endif
803
a0d0e21e 804 /* The exit() function will do everything that needs doing. */
37038d91 805 return STATUS_EXIT;
a0d0e21e 806 }
5dd60ef7 807
551a8b83 808 /* jettison our possibly duplicated environment */
4b647fb0
DM
809 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
810 * so we certainly shouldn't free it here
811 */
2f42fcb0 812#ifndef PERL_MICRO
4b647fb0 813#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 814 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
815#ifdef USE_ITHREADS
816 /* only main thread can free environ[0] contents */
817 && PL_curinterp == aTHX
818#endif
819 )
820 {
551a8b83
JH
821 I32 i;
822
823 for (i = 0; environ[i]; i++)
4b420006 824 safesysfree(environ[i]);
0631ea03 825
4b420006
JH
826 /* Must use safesysfree() when working with environ. */
827 safesysfree(environ);
551a8b83
JH
828
829 environ = PL_origenviron;
830 }
831#endif
2f42fcb0 832#endif /* !PERL_MICRO */
551a8b83 833
804ffa60 834 /* reset so print() ends up where we expect */
a0714e2c 835 setdefout(NULL);
804ffa60 836
5f8cb046
DM
837#ifdef USE_ITHREADS
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
842 */
843 {
844 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 845 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
846
847 while (i) {
c4420975 848 SV * const resv = ary[--i];
35061a7e
DM
849
850 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 851 /* this is PL_reg_curpm, already freed
35061a7e
DM
852 * flag is set in regexec.c:S_regtry
853 */
854 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 855 }
1cc8b4c5
AB
856 else if(SvREPADTMP(resv)) {
857 SvREPADTMP_off(resv);
858 }
a560f29b
NC
859 else if(SvIOKp(resv)) {
860 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
861 ReREFCNT_dec(re);
862 }
863 }
864 }
865 SvREFCNT_dec(PL_regex_padav);
7d49f689 866 PL_regex_padav = NULL;
5f8cb046
DM
867 PL_regex_pad = NULL;
868#endif
869
081fc587
AB
870 SvREFCNT_dec((SV*) PL_stashcache);
871 PL_stashcache = NULL;
872
5f05dabc
PP
873 /* loosen bonds of global variables */
874
3280af22
NIS
875 if(PL_rsfp) {
876 (void)PerlIO_close(PL_rsfp);
4608196e 877 PL_rsfp = NULL;
8ebc5c01
PP
878 }
879
880 /* Filters for program text */
3280af22 881 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 882 PL_rsfp_filters = NULL;
8ebc5c01
PP
883
884 /* switches */
3280af22
NIS
885 PL_preprocess = FALSE;
886 PL_minus_n = FALSE;
887 PL_minus_p = FALSE;
888 PL_minus_l = FALSE;
889 PL_minus_a = FALSE;
890 PL_minus_F = FALSE;
891 PL_doswitches = FALSE;
599cee73 892 PL_dowarn = G_WARN_OFF;
3280af22
NIS
893 PL_doextract = FALSE;
894 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
895 PL_unsafe = FALSE;
896
897 Safefree(PL_inplace);
bd61b366 898 PL_inplace = NULL;
a7cb1f99 899 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
900
901 if (PL_e_script) {
902 SvREFCNT_dec(PL_e_script);
a0714e2c 903 PL_e_script = NULL;
8ebc5c01
PP
904 }
905
bf9cdc68
RG
906 PL_perldb = 0;
907
8ebc5c01
PP
908 /* magical thingies */
909
7889fe52 910 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 911 PL_ofs_sv = NULL;
5f05dabc 912
7889fe52 913 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 914 PL_ors_sv = NULL;
8ebc5c01 915
3280af22 916 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 917 PL_rs = NULL;
dc92893f 918
d33b2eba 919 Safefree(PL_osname); /* $^O */
bd61b366 920 PL_osname = NULL;
5f05dabc 921
3280af22 922 SvREFCNT_dec(PL_statname);
a0714e2c
SS
923 PL_statname = NULL;
924 PL_statgv = NULL;
5f05dabc 925
8ebc5c01
PP
926 /* defgv, aka *_ should be taken care of elsewhere */
927
8ebc5c01 928 /* clean up after study() */
3280af22 929 SvREFCNT_dec(PL_lastscream);
a0714e2c 930 PL_lastscream = NULL;
3280af22
NIS
931 Safefree(PL_screamfirst);
932 PL_screamfirst = 0;
933 Safefree(PL_screamnext);
934 PL_screamnext = 0;
8ebc5c01 935
7d5ea4e7
GS
936 /* float buffer */
937 Safefree(PL_efloatbuf);
bd61b366 938 PL_efloatbuf = NULL;
7d5ea4e7
GS
939 PL_efloatsize = 0;
940
8ebc5c01 941 /* startup and shutdown function lists */
3280af22 942 SvREFCNT_dec(PL_beginav);
5a837c8f 943 SvREFCNT_dec(PL_beginav_save);
3280af22 944 SvREFCNT_dec(PL_endav);
7d30b5c4 945 SvREFCNT_dec(PL_checkav);
ece599bd 946 SvREFCNT_dec(PL_checkav_save);
3280af22 947 SvREFCNT_dec(PL_initav);
7d49f689
NC
948 PL_beginav = NULL;
949 PL_beginav_save = NULL;
950 PL_endav = NULL;
951 PL_checkav = NULL;
952 PL_checkav_save = NULL;
953 PL_initav = NULL;
5618dfe8 954
8ebc5c01 955 /* shortcuts just get cleared */
a0714e2c
SS
956 PL_envgv = NULL;
957 PL_incgv = NULL;
958 PL_hintgv = NULL;
959 PL_errgv = NULL;
960 PL_argvgv = NULL;
961 PL_argvoutgv = NULL;
962 PL_stdingv = NULL;
963 PL_stderrgv = NULL;
964 PL_last_in_gv = NULL;
965 PL_replgv = NULL;
966 PL_DBgv = NULL;
967 PL_DBline = NULL;
968 PL_DBsub = NULL;
969 PL_DBsingle = NULL;
970 PL_DBtrace = NULL;
971 PL_DBsignal = NULL;
972 PL_DBassertion = NULL;
601f1833 973 PL_DBcv = NULL;
7d49f689 974 PL_dbargs = NULL;
5c284bb0 975 PL_debstash = NULL;
8ebc5c01 976
7a1c5554 977 SvREFCNT_dec(PL_argvout_stack);
7d49f689 978 PL_argvout_stack = NULL;
8ebc5c01 979
5c831c24 980 SvREFCNT_dec(PL_modglobal);
5c284bb0 981 PL_modglobal = NULL;
5c831c24 982 SvREFCNT_dec(PL_preambleav);
7d49f689 983 PL_preambleav = NULL;
5c831c24 984 SvREFCNT_dec(PL_subname);
a0714e2c 985 PL_subname = NULL;
5c831c24 986 SvREFCNT_dec(PL_linestr);
a0714e2c 987 PL_linestr = NULL;
ca0c25f6 988#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 989 SvREFCNT_dec(PL_pidstatus);
5c284bb0 990 PL_pidstatus = NULL;
ca0c25f6 991#endif
5c831c24 992 SvREFCNT_dec(PL_toptarget);
a0714e2c 993 PL_toptarget = NULL;
5c831c24 994 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
995 PL_bodytarget = NULL;
996 PL_formtarget = NULL;
5c831c24 997
d33b2eba 998 /* free locale stuff */
b9582b6a 999#ifdef USE_LOCALE_COLLATE
d33b2eba 1000 Safefree(PL_collation_name);
bd61b366 1001 PL_collation_name = NULL;
b9582b6a 1002#endif
d33b2eba 1003
b9582b6a 1004#ifdef USE_LOCALE_NUMERIC
d33b2eba 1005 Safefree(PL_numeric_name);
bd61b366 1006 PL_numeric_name = NULL;
a453c169 1007 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1008 PL_numeric_radix_sv = NULL;
b9582b6a 1009#endif
d33b2eba 1010
5c831c24
GS
1011 /* clear utf8 character classes */
1012 SvREFCNT_dec(PL_utf8_alnum);
1013 SvREFCNT_dec(PL_utf8_alnumc);
1014 SvREFCNT_dec(PL_utf8_ascii);
1015 SvREFCNT_dec(PL_utf8_alpha);
1016 SvREFCNT_dec(PL_utf8_space);
1017 SvREFCNT_dec(PL_utf8_cntrl);
1018 SvREFCNT_dec(PL_utf8_graph);
1019 SvREFCNT_dec(PL_utf8_digit);
1020 SvREFCNT_dec(PL_utf8_upper);
1021 SvREFCNT_dec(PL_utf8_lower);
1022 SvREFCNT_dec(PL_utf8_print);
1023 SvREFCNT_dec(PL_utf8_punct);
1024 SvREFCNT_dec(PL_utf8_xdigit);
1025 SvREFCNT_dec(PL_utf8_mark);
1026 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1027 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1028 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1029 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1030 SvREFCNT_dec(PL_utf8_idstart);
1031 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1032 PL_utf8_alnum = NULL;
1033 PL_utf8_alnumc = NULL;
1034 PL_utf8_ascii = NULL;
1035 PL_utf8_alpha = NULL;
1036 PL_utf8_space = NULL;
1037 PL_utf8_cntrl = NULL;
1038 PL_utf8_graph = NULL;
1039 PL_utf8_digit = NULL;
1040 PL_utf8_upper = NULL;
1041 PL_utf8_lower = NULL;
1042 PL_utf8_print = NULL;
1043 PL_utf8_punct = NULL;
1044 PL_utf8_xdigit = NULL;
1045 PL_utf8_mark = NULL;
1046 PL_utf8_toupper = NULL;
1047 PL_utf8_totitle = NULL;
1048 PL_utf8_tolower = NULL;
1049 PL_utf8_tofold = NULL;
1050 PL_utf8_idstart = NULL;
1051 PL_utf8_idcont = NULL;
5c831c24 1052
971a9dd3 1053 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1054 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1055 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1056 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1057 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1058 CopFILE_free(&PL_compiling);
1059 CopSTASH_free(&PL_compiling);
5c831c24 1060
a0d0e21e 1061 /* Prepare to destruct main symbol table. */
5f05dabc 1062
3280af22
NIS
1063 hv = PL_defstash;
1064 PL_defstash = 0;
a0d0e21e 1065 SvREFCNT_dec(hv);
5c831c24 1066 SvREFCNT_dec(PL_curstname);
a0714e2c 1067 PL_curstname = NULL;
a0d0e21e 1068
5a844595
GS
1069 /* clear queued errors */
1070 SvREFCNT_dec(PL_errors);
a0714e2c 1071 PL_errors = NULL;
5a844595 1072
a0d0e21e 1073 FREETMPS;
0453d815 1074 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1075 if (PL_scopestack_ix != 0)
9014280d 1076 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1077 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1078 (long)PL_scopestack_ix);
1079 if (PL_savestack_ix != 0)
9014280d 1080 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1081 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1082 (long)PL_savestack_ix);
1083 if (PL_tmps_floor != -1)
9014280d 1084 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1085 (long)PL_tmps_floor + 1);
a0d0e21e 1086 if (cxstack_ix != -1)
9014280d 1087 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1088 (long)cxstack_ix + 1);
a0d0e21e 1089 }
8990e307
LW
1090
1091 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1092 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1093 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1094
1095 /* the 2 is for PL_fdpid and PL_strtab */
1096 while (PL_sv_count > 2 && sv_clean_all())
1097 ;
1098
d33b2eba
GS
1099 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1100 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1101 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1102 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1103
d4777f27
GS
1104 AvREAL_off(PL_fdpid); /* no surviving entries */
1105 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1106 PL_fdpid = NULL;
d33b2eba 1107
6c644e78
GS
1108#ifdef HAVE_INTERP_INTERN
1109 sys_intern_clear();
1110#endif
1111
6e72f9df
PP
1112 /* Destruct the global string table. */
1113 {
1114 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1115 * so that sv_free() won't fail on them.
80459961
NC
1116 * Now that the global string table is using a single hunk of memory
1117 * for both HE and HEK, we either need to explicitly unshare it the
1118 * correct way, or actually free things here.
6e72f9df 1119 */
80459961
NC
1120 I32 riter = 0;
1121 const I32 max = HvMAX(PL_strtab);
c4420975 1122 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1123 HE *hent = array[0];
1124
6e72f9df 1125 for (;;) {
0453d815 1126 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1127 HE * const next = HeNEXT(hent);
9014280d 1128 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1129 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1130 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1131 Safefree(hent);
1132 hent = next;
6e72f9df
PP
1133 }
1134 if (!hent) {
1135 if (++riter > max)
1136 break;
1137 hent = array[riter];
1138 }
1139 }
80459961
NC
1140
1141 Safefree(array);
1142 HvARRAY(PL_strtab) = 0;
1143 HvTOTALKEYS(PL_strtab) = 0;
1144 HvFILL(PL_strtab) = 0;
6e72f9df 1145 }
3280af22 1146 SvREFCNT_dec(PL_strtab);
6e72f9df 1147
e652bb2f 1148#ifdef USE_ITHREADS
c21d1a0f 1149 /* free the pointer tables used for cloning */
a0739874 1150 ptr_table_free(PL_ptr_table);
bf9cdc68 1151 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1152#endif
a0739874 1153
d33b2eba
GS
1154 /* free special SVs */
1155
1156 SvREFCNT(&PL_sv_yes) = 0;
1157 sv_clear(&PL_sv_yes);
1158 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1159 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1160
1161 SvREFCNT(&PL_sv_no) = 0;
1162 sv_clear(&PL_sv_no);
1163 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1164 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1165
9f375a43
DM
1166 {
1167 int i;
1168 for (i=0; i<=2; i++) {
1169 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1170 sv_clear(PERL_DEBUG_PAD(i));
1171 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1172 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1173 }
1174 }
1175
0453d815 1176 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1177 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1178
eba0f806
DM
1179#ifdef DEBUG_LEAKING_SCALARS
1180 if (PL_sv_count != 0) {
1181 SV* sva;
1182 SV* sv;
1183 register SV* svend;
1184
1185 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1186 svend = &sva[SvREFCNT(sva)];
1187 for (sv = sva + 1; sv < svend; ++sv) {
1188 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1189 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1190 " flags=0x%"UVxf
fd0854ff
DM
1191 " refcnt=%"UVuf pTHX__FORMAT "\n"
1192 "\tallocated at %s:%d %s %s%s\n",
1193 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1194 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1195 sv->sv_debug_line,
1196 sv->sv_debug_inpad ? "for" : "by",
1197 sv->sv_debug_optype ?
1198 PL_op_name[sv->sv_debug_optype]: "(none)",
1199 sv->sv_debug_cloned ? " (cloned)" : ""
1200 );
2aa47728 1201#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1202 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1203#endif
eba0f806
DM
1204 }
1205 }
1206 }
1207 }
2aa47728
NC
1208#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1209 {
1210 int status;
1211 fd_set rset;
1212 /* Wait for up to 4 seconds for child to terminate.
1213 This seems to be the least effort way of timing out on reaping
1214 its exit status. */
1215 struct timeval waitfor = {4, 0};
41e4abd8 1216 int sock = PL_dumper_fd;
2aa47728
NC
1217
1218 shutdown(sock, 1);
1219 FD_ZERO(&rset);
1220 FD_SET(sock, &rset);
1221 select(sock + 1, &rset, NULL, NULL, &waitfor);
1222 waitpid(child, &status, WNOHANG);
1223 close(sock);
1224 }
1225#endif
eba0f806 1226#endif
bf9cdc68 1227 PL_sv_count = 0;
eba0f806
DM
1228
1229
56a2bab7 1230#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1231 /* No more IO - including error messages ! */
1232 PerlIO_cleanup(aTHX);
1233#endif
1234
9f4bd222 1235 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1236 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1237 for no arg - and will try and SvREFCNT_dec it.
1238 */
1239 SvREFCNT(&PL_sv_undef) = 0;
1240 SvREADONLY_off(&PL_sv_undef);
1241
3280af22 1242 Safefree(PL_origfilename);
bd61b366 1243 PL_origfilename = NULL;
3280af22 1244 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1245 PL_reg_start_tmp = (char**)NULL;
1246 PL_reg_start_tmpl = 0;
43c5f42d 1247 Safefree(PL_reg_curpm);
82ba1be6 1248 Safefree(PL_reg_poscache);
dd28f7bb 1249 free_tied_hv_pool();
3280af22 1250 Safefree(PL_op_mask);
cf36064f 1251 Safefree(PL_psig_ptr);
bf9cdc68 1252 PL_psig_ptr = (SV**)NULL;
cf36064f 1253 Safefree(PL_psig_name);
bf9cdc68 1254 PL_psig_name = (SV**)NULL;
2c2666fc 1255 Safefree(PL_bitcount);
bd61b366 1256 PL_bitcount = NULL;
ce08f86c 1257 Safefree(PL_psig_pend);
bf9cdc68 1258 PL_psig_pend = (int*)NULL;
a0714e2c 1259 PL_formfeed = NULL;
6e72f9df 1260 nuke_stacks();
bf9cdc68
RG
1261 PL_tainting = FALSE;
1262 PL_taint_warn = FALSE;
3280af22 1263 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1264 PL_debug = 0;
ac27b0f5 1265
a0d0e21e 1266 DEBUG_P(debprofdump());
d33b2eba 1267
e5dd39fc 1268#ifdef USE_REENTRANT_API
10bc17b6 1269 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1270#endif
1271
612f20c3
GS
1272 sv_free_arenas();
1273
5d9a96ca
DM
1274 while (PL_regmatch_slab) {
1275 regmatch_slab *s = PL_regmatch_slab;
1276 PL_regmatch_slab = PL_regmatch_slab->next;
1277 Safefree(s);
1278 }
1279
fc36a67e
PP
1280 /* As the absolutely last thing, free the non-arena SV for mess() */
1281
3280af22 1282 if (PL_mess_sv) {
f350b448
NC
1283 /* we know that type == SVt_PVMG */
1284
9c63abab 1285 /* it could have accumulated taint magic */
f350b448
NC
1286 MAGIC* mg;
1287 MAGIC* moremagic;
1288 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1289 moremagic = mg->mg_moremagic;
1290 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1291 && mg->mg_len >= 0)
1292 Safefree(mg->mg_ptr);
1293 Safefree(mg);
9c63abab 1294 }
f350b448 1295
fc36a67e 1296 /* we know that type >= SVt_PV */
8bd4d4c5 1297 SvPV_free(PL_mess_sv);
3280af22
NIS
1298 Safefree(SvANY(PL_mess_sv));
1299 Safefree(PL_mess_sv);
a0714e2c 1300 PL_mess_sv = NULL;
fc36a67e 1301 }
37038d91 1302 return STATUS_EXIT;
79072805
LW
1303}
1304
954c1994
GS
1305/*
1306=for apidoc perl_free
1307
1308Releases a Perl interpreter. See L<perlembed>.
1309
1310=cut
1311*/
1312
79072805 1313void
0cb96387 1314perl_free(pTHXx)
79072805 1315{
7cb608b5 1316#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1317 {
1318 /*
1319 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1320 * value as we're probably hunting memory leaks then
1321 */
1322 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1323 if (!s || atoi(s) == 0) {
1324 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1325 thread at thread exit. */
1326 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1327 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1328 }
1329 }
7cb608b5
NC
1330#endif
1331
acfe0abc 1332#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1333# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1334 {
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 void *host = nw_internal_host;
acfe0abc 1337# else
7af12a34 1338 void *host = w32_internal_host;
acfe0abc 1339# endif
7af12a34 1340 PerlMem_free(aTHXx);
acfe0abc 1341# ifdef NETWARE
7af12a34 1342 nw_delete_internal_host(host);
acfe0abc 1343# else
7af12a34 1344 win32_delete_internal_host(host);
acfe0abc 1345# endif
7af12a34 1346 }
1c0ca838
GS
1347# else
1348 PerlMem_free(aTHXx);
1349# endif
acfe0abc
GS
1350#else
1351 PerlMem_free(aTHXx);
76e3520e 1352#endif
79072805
LW
1353}
1354
b7f7fff6 1355#if defined(USE_ITHREADS)
aebd1ac7
GA
1356/* provide destructors to clean up the thread key when libperl is unloaded */
1357#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358
826955bd 1359#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1360#pragma fini "perl_fini"
666ad1ec
GA
1361#elif defined(__sun) && !defined(__GNUC__)
1362#pragma fini (perl_fini)
aebd1ac7
GA
1363#endif
1364
0dbb1585
AL
1365static void
1366#if defined(__GNUC__)
1367__attribute__((destructor))
aebd1ac7 1368#endif
de009b76 1369perl_fini(void)
aebd1ac7 1370{
27da23d5 1371 dVAR;
aebd1ac7
GA
1372 if (PL_curinterp)
1373 FREE_THREAD_KEY;
1374}
1375
1376#endif /* WIN32 */
1377#endif /* THREADS */
1378
4b556e6c 1379void
864dbfa3 1380Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1381{
97aff369 1382 dVAR;
3280af22
NIS
1383 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1384 PL_exitlist[PL_exitlistlen].fn = fn;
1385 PL_exitlist[PL_exitlistlen].ptr = ptr;
1386 ++PL_exitlistlen;
4b556e6c
JD
1387}
1388
56cf6df8
RGS
1389#ifdef HAS_PROCSELFEXE
1390/* This is a function so that we don't hold on to MAXPATHLEN
1391 bytes of stack longer than necessary
1392 */
1393STATIC void
e1ec3a88 1394S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1395{
1396 char buf[MAXPATHLEN];
1397 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1398
1399 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1400 includes a spurious NUL which will cause $^X to fail in system
1401 or backticks (this will prevent extensions from being built and
1402 many tests from working). readlink is not meant to add a NUL.
1403 Normal readlink works fine.
1404 */
1405 if (len > 0 && buf[len-1] == '\0') {
1406 len--;
1407 }
1408
1409 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1410 returning the text "unknown" from the readlink rather than the path
1411 to the executable (or returning an error from the readlink). Any valid
1412 path has a '/' in it somewhere, so use that to validate the result.
1413 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1414 */
1415 if (len > 0 && memchr(buf, '/', len)) {
1416 sv_setpvn(sv,buf,len);
1417 }
1418 else {
1419 sv_setpv(sv,arg0);
1420 }
1421}
1422#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1423
1424STATIC void
1425S_set_caret_X(pTHX) {
97aff369 1426 dVAR;
fafc274c 1427 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1428 if (tmpgv) {
1429#ifdef HAS_PROCSELFEXE
1430 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1431#else
1432#ifdef OS2
c69033f2 1433 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1434#else
c69033f2 1435 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1436#endif
1437#endif
1438 }
1439}
1440
954c1994
GS
1441/*
1442=for apidoc perl_parse
1443
1444Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1445
1446=cut
1447*/
1448
79072805 1449int
0cb96387 1450perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1451{
27da23d5 1452 dVAR;
6224f72b 1453 I32 oldscope;
6224f72b 1454 int ret;
db36c5a1 1455 dJMPENV;
8d063cd8 1456
9d4ba2ae
AL
1457 PERL_UNUSED_VAR(my_perl);
1458
a687059c
LW
1459#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1460#ifdef IAMSUID
1461#undef IAMSUID
cea2e8a9 1462 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1463setuid perl scripts securely.\n");
ae3f3efd 1464#endif /* IAMSUID */
a687059c
LW
1465#endif
1466
b0891165
JH
1467#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1468 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1469 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1470 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1471 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1472 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1473 if (!PL_rehash_seed_set)
1474 PL_rehash_seed = get_hash_seed();
b0891165 1475 {
9d4ba2ae 1476 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1477
1b6737cc
AL
1478 if (s && (atoi(s) == 1))
1479 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1480 }
1481#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1482
3280af22 1483 PL_origargc = argc;
e2975953 1484 PL_origargv = argv;
a0d0e21e 1485
a2722ac9
GA
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 }
1489 else {
3cb9023d
JH
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
e9137a8e 1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
43c32782 1495 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1496 * --jhi */
e1ec3a88 1497 const char *s = NULL;
54bfe034 1498 int i;
1b6737cc 1499 const UV mask =
7d8e7db3 1500 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1501 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1502 const UV aligned =
43c32782
JH
1503 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1504
1505 /* See if all the arguments are contiguous in memory. Note
1506 * that 'contiguous' is a loose term because some platforms
1507 * align the argv[] and the envp[]. If the arguments look
1508 * like non-aligned, assume that they are 'strictly' or
1509 * 'traditionally' contiguous. If the arguments look like
1510 * aligned, we just check that they are within aligned
1511 * PTRSIZE bytes. As long as no system has something bizarre
1512 * like the argv[] interleaved with some other data, we are
1513 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1514 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1515 while (*s) s++;
1516 for (i = 1; i < PL_origargc; i++) {
1517 if ((PL_origargv[i] == s + 1
43c32782 1518#ifdef OS2
c8941eeb 1519 || PL_origargv[i] == s + 2
43c32782 1520#endif
c8941eeb
JH
1521 )
1522 ||
1523 (aligned &&
1524 (PL_origargv[i] > s &&
1525 PL_origargv[i] <=
1526 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1527 )
1528 {
1529 s = PL_origargv[i];
1530 while (*s) s++;
1531 }
1532 else
1533 break;
54bfe034 1534 }
54bfe034 1535 }
3cb9023d 1536 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1537 if (s && PL_origenviron) {
43c32782
JH
1538 if ((PL_origenviron[0] == s + 1
1539#ifdef OS2
1540 || (PL_origenviron[0] == s + 9 && (s += 8))
1541#endif
1542 )
1543 ||
1544 (aligned &&
1545 (PL_origenviron[0] > s &&
1546 PL_origenviron[0] <=
1547 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1548 )
1549 {
1550#ifndef OS2
1551 s = PL_origenviron[0];
1552 while (*s) s++;
1553#endif
bd61b366 1554 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1555 /* Force copy of environment. */
1556 for (i = 1; PL_origenviron[i]; i++) {
1557 if (PL_origenviron[i] == s + 1
1558 ||
1559 (aligned &&
1560 (PL_origenviron[i] > s &&
1561 PL_origenviron[i] <=
1562 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1563 )
1564 {
1565 s = PL_origenviron[i];
1566 while (*s) s++;
1567 }
1568 else
1569 break;
54bfe034 1570 }
43c32782 1571 }
54bfe034 1572 }
2d2af554 1573 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1574 }
1575
3280af22 1576 if (PL_do_undump) {
a0d0e21e
LW
1577
1578 /* Come here if running an undumped a.out. */
1579
3280af22
NIS
1580 PL_origfilename = savepv(argv[0]);
1581 PL_do_undump = FALSE;
a0d0e21e 1582 cxstack_ix = -1; /* start label stack again */
748a9306 1583 init_ids();
b7975bdd
NC
1584 assert (!PL_tainted);
1585 TAINT;
1586 S_set_caret_X(aTHX);
1587 TAINT_NOT;
a0d0e21e
LW
1588 init_postdump_symbols(argc,argv,env);
1589 return 0;
1590 }
1591
3280af22 1592 if (PL_main_root) {
3280af22 1593 op_free(PL_main_root);
5f66b61c 1594 PL_main_root = NULL;
ff0cee69 1595 }
5f66b61c 1596 PL_main_start = NULL;
3280af22 1597 SvREFCNT_dec(PL_main_cv);
601f1833 1598 PL_main_cv = NULL;
79072805 1599
3280af22
NIS
1600 time(&PL_basetime);
1601 oldscope = PL_scopestack_ix;
599cee73 1602 PL_dowarn = G_WARN_OFF;
f86702cc 1603
14dd3ad8 1604 JMPENV_PUSH(ret);
6224f72b 1605 switch (ret) {
312caa8e 1606 case 0:
14dd3ad8 1607 parse_body(env,xsinit);
7d30b5c4
GS
1608 if (PL_checkav)
1609 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1610 ret = 0;
1611 break;
6224f72b
GS
1612 case 1:
1613 STATUS_ALL_FAILURE;
1614 /* FALL THROUGH */
1615 case 2:
1616 /* my_exit() was called */
3280af22 1617 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1618 LEAVE;
1619 FREETMPS;
3280af22 1620 PL_curstash = PL_defstash;
7d30b5c4
GS
1621 if (PL_checkav)
1622 call_list(oldscope, PL_checkav);
37038d91 1623 ret = STATUS_EXIT;
14dd3ad8 1624 break;
6224f72b 1625 case 3:
bf49b057 1626 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1627 ret = 1;
1628 break;
6224f72b 1629 }
14dd3ad8
GS
1630 JMPENV_POP;
1631 return ret;
1632}
1633
312caa8e 1634STATIC void *
14dd3ad8 1635S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1636{
27da23d5 1637 dVAR;
312caa8e 1638 int argc = PL_origargc;
8f42b153 1639 char **argv = PL_origargv;
e1ec3a88 1640 const char *scriptname = NULL;
312caa8e 1641 VOL bool dosearch = FALSE;
e1ec3a88 1642 const char *validarg = "";
312caa8e
CS
1643 register SV *sv;
1644 register char *s;
bd61b366 1645 const char *cddir = NULL;
ab019eaa 1646#ifdef USE_SITECUSTOMIZE
20ef40cf 1647 bool minus_f = FALSE;
ab019eaa 1648#endif
312caa8e 1649
3280af22 1650 sv_setpvn(PL_linestr,"",0);
396482e1 1651 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1652 SAVEFREESV(sv);
1653 init_main_stash();
54310121 1654
6224f72b
GS
1655 for (argc--,argv++; argc > 0; argc--,argv++) {
1656 if (argv[0][0] != '-' || !argv[0][1])
1657 break;
1658#ifdef DOSUID
1659 if (*validarg)
1660 validarg = " PHOOEY ";
1661 else
1662 validarg = argv[0];
ae3f3efd
PS
1663 /*
1664 * Can we rely on the kernel to start scripts with argv[1] set to
1665 * contain all #! line switches (the whole line)? (argv[0] is set to
1666 * the interpreter name, argv[2] to the script name; argv[3] and
1667 * above may contain other arguments.)
1668 */
13281fa4 1669#endif
6224f72b
GS
1670 s = argv[0]+1;
1671 reswitch:
1672 switch (*s) {
729a02f2 1673 case 'C':
1d5472a9
GS
1674#ifndef PERL_STRICT_CR
1675 case '\r':
1676#endif
6224f72b
GS
1677 case ' ':
1678 case '0':
1679 case 'F':
1680 case 'a':
1681 case 'c':
1682 case 'd':
1683 case 'D':
1684 case 'h':
1685 case 'i':
1686 case 'l':
1687 case 'M':
1688 case 'm':
1689 case 'n':
1690 case 'p':
1691 case 's':
1692 case 'u':
1693 case 'U':
1694 case 'v':
599cee73
PM
1695 case 'W':
1696 case 'X':
6224f72b 1697 case 'w':
06492da6 1698 case 'A':
97bd5664 1699 if ((s = moreswitches(s)))
6224f72b
GS
1700 goto reswitch;
1701 break;
33b78306 1702
1dbad523 1703 case 't':
22f7c9c9 1704 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1705 if( !PL_tainting ) {
1706 PL_taint_warn = TRUE;
1707 PL_tainting = TRUE;
1708 }
1709 s++;
1710 goto reswitch;
6224f72b 1711 case 'T':
22f7c9c9 1712 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1713 PL_tainting = TRUE;
317ea90d 1714 PL_taint_warn = FALSE;
6224f72b
GS
1715 s++;
1716 goto reswitch;
f86702cc 1717
bc9b29db
RH
1718 case 'E':
1719 PL_minus_E = TRUE;
1720 /* FALL THROUGH */
6224f72b 1721 case 'e':
bf4acbe4
GS
1722#ifdef MACOS_TRADITIONAL
1723 /* ignore -e for Dev:Pseudo argument */
1724 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1725 break;
bf4acbe4 1726#endif
a52eba0e 1727 forbid_setid('e', -1);
3280af22 1728 if (!PL_e_script) {
396482e1 1729 PL_e_script = newSVpvs("");
0cb96387 1730 filter_add(read_e_script, NULL);
6224f72b
GS
1731 }
1732 if (*++s)
3280af22 1733 sv_catpv(PL_e_script, s);
6224f72b 1734 else if (argv[1]) {
3280af22 1735 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1736 argc--,argv++;
1737 }
1738 else
bc9b29db 1739 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1740 sv_catpvs(PL_e_script, "\n");
6224f72b 1741 break;
afe37c7d 1742
20ef40cf 1743 case 'f':
f5542d3a 1744#ifdef USE_SITECUSTOMIZE
20ef40cf 1745 minus_f = TRUE;
f5542d3a 1746#endif
20ef40cf
GA
1747 s++;
1748 goto reswitch;
1749
6224f72b 1750 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1751 forbid_setid('I', -1);
bd61b366 1752 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1753 argc--,argv++;
1754 }
6224f72b 1755 if (s && *s) {
0df16ed7 1756 STRLEN len = strlen(s);
aec46f14 1757 const char * const p = savepvn(s, len);
88fe16b2 1758 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1759 sv_catpvs(sv, "-I");
0df16ed7 1760 sv_catpvn(sv, p, len);
396482e1 1761 sv_catpvs(sv, " ");
6224f72b 1762 Safefree(p);
0df16ed7
GS
1763 }
1764 else
a67e862a 1765 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1766 break;
1767 case 'P':
a52eba0e 1768 forbid_setid('P', -1);
3280af22 1769 PL_preprocess = TRUE;
6224f72b
GS
1770 s++;
1771 goto reswitch;
1772 case 'S':
a52eba0e 1773 forbid_setid('S', -1);
6224f72b
GS
1774 dosearch = TRUE;
1775 s++;
1776 goto reswitch;
1777 case 'V':
7edfd0ef
NC
1778 {
1779 SV *opts_prog;
1780
1781 if (!PL_preambleav)
1782 PL_preambleav = newAV();
1783 av_push(PL_preambleav,
396482e1 1784 newSVpvs("use Config;"));
7edfd0ef
NC
1785 if (*++s != ':') {
1786 STRLEN opts;
1787
396482e1 1788 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1789#ifdef VMS
396482e1 1790 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1791#else
396482e1 1792 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1793#endif
7edfd0ef 1794 opts = SvCUR(opts_prog);
efcaa95b 1795
9cd7d3f2 1796 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1797# ifdef DEBUGGING
e2e4dbf1 1798 " DEBUGGING"
6224f72b 1799# endif
4f185743
NC
1800# ifdef DEBUG_LEAKING_SCALARS
1801 " DEBUG_LEAKING_SCALARS"
1802# endif
85e1fcb9 1803# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1804 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1805# endif
1806# ifdef FAKE_THREADS
e2e4dbf1 1807 " FAKE_THREADS"
85e1fcb9 1808# endif
6224f72b 1809# ifdef MULTIPLICITY
e2e4dbf1 1810 " MULTIPLICITY"
6224f72b 1811# endif
85e1fcb9 1812# ifdef MYMALLOC
e2e4dbf1 1813 " MYMALLOC"
85e1fcb9 1814# endif
3bcf5ed8
SP
1815# ifdef NO_MATHOMS
1816 " NO_MATHOMS"
1817# endif
85e1fcb9 1818# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1819 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1820# endif
1821# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1822 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1823# endif
1824# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1825 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1826# endif
1827# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1828 " PERL_IMPLICIT_SYS"
85e1fcb9 1829# endif
a724edfe
NC
1830# ifdef PERL_MAD
1831 " PERL_MAD"
1832# endif
85e1fcb9 1833# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1834 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1835# endif
1836# ifdef PERL_NEED_APPCTX
e2e4dbf1 1837 " PERL_NEED_APPCTX"
85e1fcb9
SH
1838# endif
1839# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1840 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1841# endif
1842# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1843 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1844# endif
9c0a4d5d
DM
1845# ifdef PERL_TRACK_MEMPOOL
1846 " PERL_TRACK_MEMPOOL"
1847# endif
417cd4a8
SP
1848# ifdef PERL_USE_SAFE_PUTENV
1849 " PERL_USE_SAFE_PUTENV"
1850# endif
ca0c25f6
NC
1851#ifdef PERL_USES_PL_PIDSTATUS
1852 " PERL_USES_PL_PIDSTATUS"
1853#endif
85e1fcb9 1854# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1855 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1856# endif
1857# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1858 " THREADS_HAVE_PIDS"
85e1fcb9 1859# endif
85e1fcb9 1860# ifdef USE_64_BIT_ALL
e2e4dbf1 1861 " USE_64_BIT_ALL"
ac5e8965 1862# endif
10cc9d2a 1863# ifdef USE_64_BIT_INT
e2e4dbf1 1864 " USE_64_BIT_INT"
10cc9d2a 1865# endif
85e1fcb9 1866# ifdef USE_ITHREADS
e2e4dbf1 1867 " USE_ITHREADS"
85e1fcb9
SH
1868# endif
1869# ifdef USE_LARGE_FILES
e2e4dbf1 1870 " USE_LARGE_FILES"
ac5e8965
JH
1871# endif
1872# ifdef USE_LONG_DOUBLE
e2e4dbf1 1873 " USE_LONG_DOUBLE"
ac5e8965 1874# endif
85e1fcb9 1875# ifdef USE_PERLIO
e2e4dbf1 1876 " USE_PERLIO"
53430762 1877# endif
85e1fcb9 1878# ifdef USE_REENTRANT_API
e2e4dbf1 1879 " USE_REENTRANT_API"
85e1fcb9
SH
1880# endif
1881# ifdef USE_SFIO
e2e4dbf1 1882 " USE_SFIO"
ac5e8965 1883# endif
20ef40cf 1884# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1885 " USE_SITECUSTOMIZE"
20ef40cf 1886# endif
85e1fcb9 1887# ifdef USE_SOCKS
e2e4dbf1 1888 " USE_SOCKS"
b363f7ed 1889# endif
e2e4dbf1 1890 );
efcaa95b 1891
7edfd0ef
NC
1892 while (SvCUR(opts_prog) > opts+76) {
1893 /* find last space after "options: " and before col 76
1894 */
efcaa95b 1895
7edfd0ef 1896 const char *space;
c4420975 1897 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1898 const char c = pv[opts+76];
1899 pv[opts+76] = '\0';
1900 space = strrchr(pv+opts+26, ' ');
1901 pv[opts+76] = c;
1902 if (!space) break; /* "Can't happen" */
efcaa95b 1903
7edfd0ef 1904 /* break the line before that space */
efcaa95b 1905
7edfd0ef 1906 opts = space - pv;
89529cee 1907 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1908 STR_WITH_LEN("\\n "));
7edfd0ef 1909 }
efcaa95b 1910
396482e1 1911 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1912
6224f72b 1913#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1914 if (LOCAL_PATCH_COUNT > 0) {
1915 int i;
396482e1 1916 sv_catpvs(opts_prog,
7edfd0ef
NC
1917 "\" Locally applied patches:\\n\",");
1918 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1919 if (PL_localpatches[i])
1920 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1921 0, PL_localpatches[i], 0);
1922 }
6224f72b 1923 }
6224f72b 1924#endif
7edfd0ef
NC
1925 Perl_sv_catpvf(aTHX_ opts_prog,
1926 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1927#ifdef __DATE__
1928# ifdef __TIME__
7edfd0ef
NC
1929 Perl_sv_catpvf(aTHX_ opts_prog,
1930 ",\" Compiled at %s %s\\n\"",__DATE__,
1931 __TIME__);
6224f72b 1932# else
7edfd0ef
NC
1933 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1934 __DATE__);
6224f72b
GS
1935# endif
1936#endif
396482e1 1937 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1938 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1939 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1940#ifdef __CYGWIN__
396482e1 1941 sv_catpvs(opts_prog,
7edfd0ef 1942 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1943#endif
396482e1 1944 sv_catpvs(opts_prog,
7edfd0ef
NC
1945 "print \" \\%ENV:\\n @env\\n\" if @env;"
1946 "print \" \\@INC:\\n @INC\\n\";");
1947 }
1948 else {
1949 ++s;
1950 opts_prog = Perl_newSVpvf(aTHX_
1951 "Config::config_vars(qw%c%s%c)",
1952 0, s, 0);
1953 s += strlen(s);
1954 }
1955 av_push(PL_preambleav, opts_prog);
1956 /* don't look for script or read stdin */
1957 scriptname = BIT_BUCKET;
1958 goto reswitch;
6224f72b 1959 }
6224f72b 1960 case 'x':
3280af22 1961 PL_doextract = TRUE;
6224f72b
GS
1962 s++;
1963 if (*s)
f4c556ac 1964 cddir = s;
6224f72b
GS
1965 break;
1966 case 0:
1967 break;
1968 case '-':
1969 if (!*++s || isSPACE(*s)) {
1970 argc--,argv++;
1971 goto switch_end;
1972 }
1973 /* catch use of gnu style long options */
1974 if (strEQ(s, "version")) {
dd374669 1975 s = (char *)"v";
6224f72b
GS
1976 goto reswitch;
1977 }
1978 if (strEQ(s, "help")) {
dd374669 1979 s = (char *)"h";
6224f72b
GS
1980 goto reswitch;
1981 }
1982 s--;
1983 /* FALL THROUGH */
1984 default:
cea2e8a9 1985 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1986 }
1987 }
6224f72b 1988 switch_end:
54310121 1989
f675dbe5
CB
1990 if (
1991#ifndef SECURE_INTERNAL_GETENV
1992 !PL_tainting &&
1993#endif
cf756827 1994 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1995 {
e1ec3a88 1996 const char *popt = s;
74288ac8
GS
1997 while (isSPACE(*s))
1998 s++;
317ea90d 1999 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2000 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2001 PL_tainting = TRUE;
317ea90d
MS
2002 PL_taint_warn = FALSE;
2003 }
74288ac8 2004 else {
bd61b366 2005 char *popt_copy = NULL;
74288ac8 2006 while (s && *s) {
4ea8f8fb 2007 char *d;
74288ac8
GS
2008 while (isSPACE(*s))
2009 s++;
2010 if (*s == '-') {
2011 s++;
2012 if (isSPACE(*s))
2013 continue;
2014 }
4ea8f8fb 2015 d = s;
74288ac8
GS
2016 if (!*s)
2017 break;
e4af53b0 2018 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2019 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2020 while (++s && *s) {
2021 if (isSPACE(*s)) {
cf756827
GS
2022 if (!popt_copy) {
2023 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2024 s = popt_copy + (s - popt);
2025 d = popt_copy + (d - popt);
2026 }
4ea8f8fb
MS
2027 *s++ = '\0';
2028 break;
2029 }
2030 }
1c4db469 2031 if (*d == 't') {
317ea90d
MS
2032 if( !PL_tainting ) {
2033 PL_taint_warn = TRUE;
2034 PL_tainting = TRUE;
2035 }
1c4db469 2036 } else {
97bd5664 2037 moreswitches(d);
1c4db469 2038 }
6224f72b 2039 }
6224f72b
GS
2040 }
2041 }
a0d0e21e 2042
20ef40cf
GA
2043#ifdef USE_SITECUSTOMIZE
2044 if (!minus_f) {
2045 if (!PL_preambleav)
2046 PL_preambleav = newAV();
2047 av_unshift(PL_preambleav, 1);
2048 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2049 }
2050#endif
2051
317ea90d 2052 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
72dc9ed5 2053 PL_compiling.cop_warnings
8ee4cf24 2054 = Perl_new_warnings_bitfield(aTHX_ NULL, WARN_TAINTstring, WARNsize);
317ea90d
MS
2055 }
2056
6224f72b
GS
2057 if (!scriptname)
2058 scriptname = argv[0];
3280af22 2059 if (PL_e_script) {
6224f72b
GS
2060 argc++,argv--;
2061 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2062 }
bd61b366 2063 else if (scriptname == NULL) {
6224f72b
GS
2064#ifdef MSDOS
2065 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2066 moreswitches("h");
6224f72b
GS
2067#endif
2068 scriptname = "-";
2069 }
2070
b7975bdd
NC
2071 /* Set $^X early so that it can be used for relocatable paths in @INC */
2072 assert (!PL_tainted);
2073 TAINT;
2074 S_set_caret_X(aTHX);
2075 TAINT_NOT;
6224f72b
GS
2076 init_perllib();
2077
a52eba0e
NC
2078 {
2079 int suidscript;
2080 const int fdscript
2081 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2082
a52eba0e 2083 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2084
64ca3a65 2085#ifndef PERL_MICRO
a52eba0e
NC
2086# if defined(SIGCHLD) || defined(SIGCLD)
2087 {
2088# ifndef SIGCHLD
2089# define SIGCHLD SIGCLD
2090# endif
2091 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2092 if (sigstate == (Sighandler_t) SIG_IGN) {
2093 if (ckWARN(WARN_SIGNAL))
2094 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2095 "Can't ignore signal CHLD, forcing to default");
2096 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2097 }
0b5b802d 2098 }
a52eba0e 2099# endif
64ca3a65 2100#endif
0b5b802d 2101
a52eba0e 2102 if (PL_doextract
bf4acbe4 2103#ifdef MACOS_TRADITIONAL
a52eba0e 2104 || gMacPerl_AlwaysExtract
bf4acbe4 2105#endif
a52eba0e 2106 ) {
faef540c
NC
2107
2108 /* This will croak if suidscript is >= 0, as -x cannot be used with
2109 setuid scripts. */
2110 forbid_setid('x', suidscript);
2111 /* Hence you can't get here if suidscript >= 0 */
2112
2113 find_beginning();
a52eba0e
NC
2114 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2115 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2116 }
f4c556ac 2117 }
6224f72b 2118
561b68a9 2119 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2120 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2121 CvUNIQUE_on(PL_compcv);
2122
dd2155a4 2123 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2124
0c4f7ff0 2125 boot_core_PerlIO();
6224f72b 2126 boot_core_UNIVERSAL();
09bef843 2127 boot_core_xsutils();
6224f72b
GS
2128
2129 if (xsinit)
acfe0abc 2130 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2131#ifndef PERL_MICRO
d0d72822 2132#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2133 init_os_extras();
6224f72b 2134#endif
64ca3a65 2135#endif
6224f72b 2136
29209bc5 2137#ifdef USE_SOCKS
1b9c9cf5
DH
2138# ifdef HAS_SOCKS5_INIT
2139 socks5_init(argv[0]);
2140# else
29209bc5 2141 SOCKSinit(argv[0]);
1b9c9cf5 2142# endif
ac27b0f5 2143#endif
29209bc5 2144
6224f72b
GS
2145 init_predump_symbols();
2146 /* init_postdump_symbols not currently designed to be called */
2147 /* more than once (ENV isn't cleared first, for example) */
2148 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2149 if (!PL_do_undump)
6224f72b
GS
2150 init_postdump_symbols(argc,argv,env);
2151
27da23d5
JH
2152 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2153 * or explicitly in some platforms.
085a54d9 2154 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2155 * look like the user wants to use UTF-8. */
a0fd4948 2156#if defined(__SYMBIAN32__)
27da23d5
JH
2157 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2158#endif
06e66572
JH
2159 if (PL_unicode) {
2160 /* Requires init_predump_symbols(). */
a05d7ebb 2161 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2162 IO* io;
2163 PerlIO* fp;
2164 SV* sv;
2165
a05d7ebb 2166 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2167 * and the default open disciplines. */
a05d7ebb
JH
2168 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2169 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2170 (fp = IoIFP(io)))
2171 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2172 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2173 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2174 (fp = IoOFP(io)))
2175 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2176 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2177 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2178 (fp = IoOFP(io)))
2179 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2180 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2181 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2182 SVt_PV)))) {
a05d7ebb
JH
2183 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2184 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2185 if (in) {
2186 if (out)
2187 sv_setpvn(sv, ":utf8\0:utf8", 11);
2188 else
2189 sv_setpvn(sv, ":utf8\0", 6);
2190 }
2191 else if (out)
2192 sv_setpvn(sv, "\0:utf8", 6);
2193 SvSETMAGIC(sv);
2194 }
b310b053
JH
2195 }
2196 }
2197
4ffa73a3
JH
2198 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2199 if (strEQ(s, "unsafe"))
2200 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2201 else if (strEQ(s, "safe"))
2202 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2203 else
2204 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2205 }
2206
81d86705
NC
2207#ifdef PERL_MAD
2208 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2209 PL_madskills = 1;
2210 PL_minus_c = 1;
2211 if (!s || !s[0])
2212 PL_xmlfp = PerlIO_stdout();
2213 else {
2214 PL_xmlfp = PerlIO_open(s, "w");
2215 if (!PL_xmlfp)
2216 Perl_croak(aTHX_ "Can't open %s", s);
2217 }
2218 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2219 }
2220 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2221 PL_madskills = atoi(s);
2222 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2223 }
2224#endif
2225
6224f72b
GS
2226 init_lexer();
2227
2228 /* now parse the script */
2229
93189314 2230 SETERRNO(0,SS_NORMAL);
3280af22 2231 PL_error_count = 0;
bf4acbe4
GS
2232#ifdef MACOS_TRADITIONAL
2233 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2234 if (PL_minus_c)
2235 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2236 else {
2237 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2238 MacPerl_MPWFileName(PL_origfilename));
2239 }
2240 }
2241#else
3280af22
NIS
2242 if (yyparse() || PL_error_count) {
2243 if (PL_minus_c)
cea2e8a9 2244 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2245 else {
cea2e8a9 2246 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2247 PL_origfilename);
6224f72b
GS
2248 }
2249 }
bf4acbe4 2250#endif
57843af0 2251 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2252 PL_curstash = PL_defstash;
2253 PL_preprocess = FALSE;
2254 if (PL_e_script) {
2255 SvREFCNT_dec(PL_e_script);
a0714e2c 2256 PL_e_script = NULL;
6224f72b
GS
2257 }
2258
3280af22 2259 if (PL_do_undump)
6224f72b
GS
2260 my_unexec();
2261
57843af0
GS
2262 if (isWARN_ONCE) {
2263 SAVECOPFILE(PL_curcop);
2264 SAVECOPLINE(PL_curcop);
3280af22 2265 gv_check(PL_defstash);
57843af0 2266 }
6224f72b
GS
2267
2268 LEAVE;
2269 FREETMPS;
2270
2271#ifdef MYMALLOC
2272 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2273 dump_mstats("after compilation:");
2274#endif
2275
2276 ENTER;
3280af22 2277 PL_restartop = 0;
312caa8e 2278 return NULL;
6224f72b
GS
2279}
2280
954c1994
GS
2281/*
2282=for apidoc perl_run
2283
2284Tells a Perl interpreter to run. See L<perlembed>.
2285
2286=cut
2287*/
2288
6224f72b 2289int
0cb96387 2290perl_run(pTHXx)
6224f72b 2291{
97aff369 2292 dVAR;
6224f72b 2293 I32 oldscope;
14dd3ad8 2294 int ret = 0;
db36c5a1 2295 dJMPENV;
6224f72b 2296
96a5add6 2297 PERL_UNUSED_CONTEXT;
9d4ba2ae 2298
3280af22 2299 oldscope = PL_scopestack_ix;
96e176bf
CL
2300#ifdef VMS
2301 VMSISH_HUSHED = 0;
2302#endif
6224f72b 2303
14dd3ad8 2304 JMPENV_PUSH(ret);
6224f72b
GS
2305 switch (ret) {
2306 case 1:
2307 cxstack_ix = -1; /* start context stack again */
312caa8e 2308 goto redo_body;
14dd3ad8 2309 case 0: /* normal completion */
14dd3ad8
GS
2310 redo_body:
2311 run_body(oldscope);
14dd3ad8
GS
2312 /* FALL THROUGH */
2313 case 2: /* my_exit() */
3280af22 2314 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2315 LEAVE;
2316 FREETMPS;
3280af22 2317 PL_curstash = PL_defstash;
3a1ee7e8 2318 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2319 PL_endav && !PL_minus_c)
2320 call_list(oldscope, PL_endav);
6224f72b
GS
2321#ifdef MYMALLOC
2322 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2323 dump_mstats("after execution: ");
2324#endif
37038d91 2325 ret = STATUS_EXIT;
14dd3ad8 2326 break;
6224f72b 2327 case 3:
312caa8e
CS
2328 if (PL_restartop) {
2329 POPSTACK_TO(PL_mainstack);
2330 goto redo_body;
6224f72b 2331 }
bf49b057 2332 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2333 FREETMPS;
14dd3ad8
GS
2334 ret = 1;
2335 break;
6224f72b
GS
2336 }
2337
14dd3ad8
GS
2338 JMPENV_POP;
2339 return ret;
312caa8e
CS
2340}
2341
14dd3ad8 2342
dd374669 2343STATIC void
14dd3ad8
GS
2344S_run_body(pTHX_ I32 oldscope)
2345{
97aff369 2346 dVAR;
6224f72b 2347 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2348 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2349
3280af22 2350 if (!PL_restartop) {
81d86705
NC
2351#ifdef PERL_MAD
2352 if (PL_xmlfp) {
2353 xmldump_all();
2354 exit(0); /* less likely to core dump than my_exit(0) */
2355 }
2356#endif
6224f72b 2357 DEBUG_x(dump_all());
cf2782cd 2358#ifdef DEBUGGING
ecae49c0
NC
2359 if (!DEBUG_q_TEST)
2360 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2361#endif
b900a521
JH
2362 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2363 PTR2UV(thr)));
6224f72b 2364
3280af22 2365 if (PL_minus_c) {
bf4acbe4 2366#ifdef MACOS_TRADITIONAL
e69a2255
JH
2367 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2368 (gMacPerl_ErrorFormat ? "# " : ""),
2369 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2370#else
bf49b057 2371 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2372#endif
6224f72b
GS
2373 my_exit(0);
2374 }
3280af22 2375 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2376 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2377 if (PL_initav)
2378 call_list(oldscope, PL_initav);
6224f72b
GS
2379 }
2380
2381 /* do it */
2382
3280af22 2383 if (PL_restartop) {
533c011a 2384 PL_op = PL_restartop;
3280af22 2385 PL_restartop = 0;
cea2e8a9 2386 CALLRUNOPS(aTHX);
6224f72b 2387 }
3280af22
NIS
2388 else if (PL_main_start) {
2389 CvDEPTH(PL_main_cv) = 1;
533c011a 2390 PL_op = PL_main_start;
cea2e8a9 2391 CALLRUNOPS(aTHX);
6224f72b 2392 }
f6b3007c
JH
2393 my_exit(0);
2394 /* NOTREACHED */
6224f72b
GS
2395}
2396
954c1994 2397/*
ccfc67b7
JH
2398=head1 SV Manipulation Functions
2399
954c1994
GS
2400=for apidoc p||get_sv
2401
2402Returns the SV of the specified Perl scalar. If C<create> is set and the
2403Perl variable does not exist then it will be created. If C<create> is not
2404set and the variable does not exist then NULL is returned.
2405
2406=cut
2407*/
2408
6224f72b 2409SV*
864dbfa3 2410Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2411{
2412 GV *gv;
6224f72b
GS
2413 gv = gv_fetchpv(name, create, SVt_PV);
2414 if (gv)
2415 return GvSV(gv);
a0714e2c 2416 return NULL;
6224f72b
GS
2417}
2418
954c1994 2419/*
ccfc67b7
JH
2420=head1 Array Manipulation Functions
2421
954c1994
GS
2422=for apidoc p||get_av
2423
2424Returns the AV of the specified Perl array. If C<create> is set and the
2425Perl variable does not exist then it will be created. If C<create> is not
2426set and the variable does not exist then NULL is returned.
2427
2428=cut
2429*/
2430
6224f72b 2431AV*
864dbfa3 2432Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2433{
c4420975 2434 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2435 if (create)
2436 return GvAVn(gv);
2437 if (gv)
2438 return GvAV(gv);
7d49f689 2439 return NULL;
6224f72b
GS
2440}
2441
954c1994 2442/*
ccfc67b7
JH
2443=head1 Hash Manipulation Functions
2444
954c1994
GS
2445=for apidoc p||get_hv
2446
2447Returns the HV of the specified Perl hash. If C<create> is set and the
2448Perl variable does not exist then it will be created. If C<create> is not
2449set and the variable does not exist then NULL is returned.
2450
2451=cut
2452*/
2453
6224f72b 2454HV*
864dbfa3 2455Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2456{
890ce7af 2457 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2458 if (create)
2459 return GvHVn(gv);
2460 if (gv)
2461 return GvHV(gv);
5c284bb0 2462 return NULL;
a0d0e21e
LW
2463}
2464
954c1994 2465/*
ccfc67b7
JH
2466=head1 CV Manipulation Functions
2467
954c1994
GS
2468=for apidoc p||get_cv
2469
2470Returns the CV of the specified Perl subroutine. If C<create> is set and
2471the Perl subroutine does not exist then it will be declared (which has the
2472same effect as saying C<sub name;>). If C<create> is not set and the
2473subroutine does not exist then NULL is returned.
2474
2475=cut
2476*/
2477
a0d0e21e 2478CV*
864dbfa3 2479Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2480{
c4420975 2481 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2482 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2483 /* XXX this is probably not what they think they're getting.
2484 * It has the same effect as "sub name;", i.e. just a forward
2485 * declaration! */
8ebc5c01 2486 if (create && !GvCVu(gv))
774d564b 2487 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2488 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2489 NULL, NULL);
a0d0e21e 2490 if (gv)
8ebc5c01 2491 return GvCVu(gv);
601f1833 2492 return NULL;
a0d0e21e
LW
2493}
2494
79072805
LW
2495/* Be sure to refetch the stack pointer after calling these routines. */
2496
954c1994 2497/*
ccfc67b7
JH
2498
2499=head1 Callback Functions
2500
954c1994
GS
2501=for apidoc p||call_argv
2502
2503Performs a callback to the specified Perl sub. See L<perlcall>.
2504
2505=cut
2506*/
2507
a0d0e21e 2508I32
8f42b153 2509Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2510
8ac85365
NIS
2511 /* See G_* flags in cop.h */
2512 /* null terminated arg list */
8990e307 2513{
97aff369 2514 dVAR;
a0d0e21e 2515 dSP;
8990e307 2516
924508f0 2517 PUSHMARK(SP);
a0d0e21e 2518 if (argv) {
8990e307 2519 while (*argv) {
a0d0e21e 2520 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2521 argv++;
2522 }
a0d0e21e 2523 PUTBACK;
8990e307 2524 }
864dbfa3 2525 return call_pv(sub_name, flags);
8990e307
LW
2526}
2527
954c1994
GS
2528/*
2529=for apidoc p||call_pv
2530
2531Performs a callback to the specified Perl sub. See L<perlcall>.
2532
2533=cut
2534*/
2535
a0d0e21e 2536I32
864dbfa3 2537Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2538 /* name of the subroutine */
2539 /* See G_* flags in cop.h */
a0d0e21e 2540{
864dbfa3 2541 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2542}
2543
954c1994
GS
2544/*
2545=for apidoc p||call_method
2546
2547Performs a callback to the specified Perl method. The blessed object must
2548be on the stack. See L<perlcall>.
2549
2550=cut
2551*/
2552
a0d0e21e 2553I32
864dbfa3 2554Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2555 /* name of the subroutine */
2556 /* See G_* flags in cop.h */
a0d0e21e 2557{
968b3946 2558 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2559}
2560
2561/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2562/*
2563=for apidoc p||call_sv
2564
2565Performs a callback to the Perl sub whose name is in the SV. See
2566L<perlcall>.
2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
864dbfa3 2572Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2573 /* See G_* flags in cop.h */
a0d0e21e 2574{
27da23d5 2575 dVAR; dSP;
a0d0e21e 2576 LOGOP myop; /* fake syntax tree node */
968b3946 2577 UNOP method_op;
aa689395 2578 I32 oldmark;
13689cfe 2579 volatile I32 retval = 0;
a0d0e21e 2580 I32 oldscope;
54310121 2581 bool oldcatch = CATCH_GET;
6224f72b 2582 int ret;
c4420975 2583 OP* const oldop = PL_op;
db36c5a1 2584 dJMPENV;
1e422769 2585
a0d0e21e
LW
2586 if (flags & G_DISCARD) {
2587 ENTER;
2588 SAVETMPS;
2589 }
2590
aa689395 2591 Zero(&myop, 1, LOGOP);
5f66b61c 2592 myop.op_next = NULL;
f51d4af5 2593 if (!(flags & G_NOARGS))
aa689395 2594 myop.op_flags |= OPf_STACKED;
54310121
PP
2595 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2596 (flags & G_ARRAY) ? OPf_WANT_LIST :
2597 OPf_WANT_SCALAR);
462e5cf6 2598 SAVEOP();
533c011a 2599 PL_op = (OP*)&myop;
aa689395 2600
3280af22
NIS
2601 EXTEND(PL_stack_sp, 1);
2602 *++PL_stack_sp = sv;
aa689395 2603 oldmark = TOPMARK;
3280af22 2604 oldscope = PL_scopestack_ix;
a0d0e21e 2605
3280af22 2606 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2607 /* Handle first BEGIN of -d. */
3280af22 2608 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2609 /* Try harder, since this may have been a sighandler, thus
2610 * curstash may be meaningless. */
3280af22 2611 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2612 && !(flags & G_NODEBUG))
533c011a 2613 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2614
968b3946
GS
2615 if (flags & G_METHOD) {
2616 Zero(&method_op, 1, UNOP);
2617 method_op.op_next = PL_op;
2618 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2619 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2620 PL_op = (OP*)&method_op;
968b3946
GS
2621 }
2622
312caa8e 2623 if (!(flags & G_EVAL)) {
0cdb2077 2624 CATCH_SET(TRUE);
d6f07c05 2625 CALL_BODY_SUB((OP*)&myop);
312caa8e 2626 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2627 CATCH_SET(oldcatch);
312caa8e
CS
2628 }
2629 else {
d78bda3d 2630 myop.op_other = (OP*)&myop;
3280af22 2631 PL_markstack_ptr--;
edb2152a 2632 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2633 PL_markstack_ptr++;
a0d0e21e 2634
14dd3ad8 2635 JMPENV_PUSH(ret);
edb2152a 2636
6224f72b
GS
2637 switch (ret) {
2638 case 0:
14dd3ad8 2639 redo_body:
d6f07c05 2640 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2641 retval = PL_stack_sp - (PL_stack_base + oldmark);
2642 if (!(flags & G_KEEPERR))
c69006e4 2643 sv_setpvn(ERRSV,"",0);
a0d0e21e 2644 break;
6224f72b 2645 case 1:
f86702cc 2646 STATUS_ALL_FAILURE;
a0d0e21e 2647 /* FALL THROUGH */
6224f72b 2648 case 2:
a0d0e21e 2649 /* my_exit() was called */
3280af22 2650 PL_curstash = PL_defstash;
a0d0e21e 2651 FREETMPS;
14dd3ad8 2652 JMPENV_POP;
cc3604b1 2653 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2654 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2655 my_exit_jump();
a0d0e21e 2656 /* NOTREACHED */
6224f72b 2657 case 3:
3280af22 2658 if (PL_restartop) {
533c011a 2659 PL_op = PL_restartop;
3280af22 2660 PL_restartop = 0;
312caa8e 2661 goto redo_body;
a0d0e21e 2662 }
3280af22 2663 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2664 if (flags & G_ARRAY)
2665 retval = 0;
2666 else {
2667 retval = 1;
3280af22 2668 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2669 }
312caa8e 2670 break;
a0d0e21e 2671 }
a0d0e21e 2672
edb2152a
NC
2673 if (PL_scopestack_ix > oldscope)
2674 delete_eval_scope();
14dd3ad8 2675 JMPENV_POP;
a0d0e21e 2676 }
1e422769 2677
a0d0e21e 2678 if (flags & G_DISCARD) {
3280af22 2679 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2680 retval = 0;
2681 FREETMPS;
2682 LEAVE;
2683 }
533c011a 2684 PL_op = oldop;
a0d0e21e
LW
2685 return retval;
2686}
2687
6e72f9df 2688/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2689
954c1994
GS
2690/*
2691=for apidoc p||eval_sv
2692
2693Tells Perl to C<eval> the string in the SV.
2694
2695=cut
2696*/
2697
a0d0e21e 2698I32
864dbfa3 2699Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2700
8ac85365 2701 /* See G_* flags in cop.h */
a0d0e21e 2702{
97aff369 2703 dVAR;
924508f0 2704 dSP;
a0d0e21e 2705 UNOP myop; /* fake syntax tree node */
8fa7f367 2706 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2707 volatile I32 retval = 0;
6224f72b 2708 int ret;
c4420975 2709 OP* const oldop = PL_op;
db36c5a1 2710 dJMPENV;
84902520 2711
4633a7c4
LW
2712 if (flags & G_DISCARD) {
2713 ENTER;
2714 SAVETMPS;
2715 }
2716
462e5cf6 2717 SAVEOP();
533c011a
NIS
2718 PL_op = (OP*)&myop;
2719 Zero(PL_op, 1, UNOP);
3280af22
NIS
2720 EXTEND(PL_stack_sp, 1);
2721 *++PL_stack_sp = sv;
79072805 2722
4633a7c4
LW
2723 if (!(flags & G_NOARGS))
2724 myop.op_flags = OPf_STACKED;
5f66b61c 2725 myop.op_next = NULL;
6e72f9df 2726 myop.op_type = OP_ENTEREVAL;
54310121
PP
2727 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2728 (flags & G_ARRAY) ? OPf_WANT_LIST :
2729 OPf_WANT_SCALAR);
6e72f9df
PP
2730 if (flags & G_KEEPERR)
2731 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2732
dedbcade
DM
2733 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2734 * before a PUSHEVAL, which corrupts the stack after a croak */
2735 TAINT_PROPER("eval_sv()");
2736
14dd3ad8 2737 JMPENV_PUSH(ret);
6224f72b
GS
2738 switch (ret) {
2739 case 0:
14dd3ad8 2740 redo_body:
d6f07c05 2741 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2742 retval = PL_stack_sp - (PL_stack_base + oldmark);
2743 if (!(flags & G_KEEPERR))
c69006e4 2744 sv_setpvn(ERRSV,"",0);
4633a7c4 2745 break;
6224f72b 2746 case 1:
f86702cc 2747 STATUS_ALL_FAILURE;
4633a7c4 2748 /* FALL THROUGH */
6224f72b 2749 case 2:
4633a7c4 2750 /* my_exit() was called */
3280af22 2751 PL_curstash = PL_defstash;
4633a7c4 2752 FREETMPS;
14dd3ad8 2753 JMPENV_POP;
cc3604b1 2754 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2755 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2756 my_exit_jump();
4633a7c4 2757 /* NOTREACHED */
6224f72b 2758 case 3:
3280af22 2759 if (PL_restartop) {
533c011a 2760 PL_op = PL_restartop;
3280af22 2761 PL_restartop = 0;
312caa8e 2762 goto redo_body;
4633a7c4 2763 }
3280af22 2764 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2765 if (flags & G_ARRAY)
2766 retval = 0;
2767 else {
2768 retval = 1;
3280af22 2769 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2770 }
312caa8e 2771 break;
4633a7c4
LW
2772 }
2773
14dd3ad8 2774 JMPENV_POP;
4633a7c4 2775 if (flags & G_DISCARD) {
3280af22 2776 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2777 retval = 0;
2778 FREETMPS;
2779 LEAVE;
2780 }
533c011a 2781 PL_op = oldop;
4633a7c4
LW
2782 return retval;
2783}
2784
954c1994
GS
2785/*
2786=for apidoc p||eval_pv
2787
2788Tells Perl to C<eval> the given string and return an SV* result.
2789
2790=cut
2791*/
2792
137443ea 2793SV*
864dbfa3 2794Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2795{
97aff369 2796 dVAR;
137443ea
PP
2797 dSP;
2798 SV* sv = newSVpv(p, 0);
2799
864dbfa3 2800 eval_sv(sv, G_SCALAR);
137443ea
PP
2801 SvREFCNT_dec(sv);
2802
2803 SPAGAIN;
2804 sv = POPs;
2805 PUTBACK;
2806
2d8e6c8d 2807 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2808 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2809 }
137443ea
PP
2810
2811 return sv;
2812}
2813
4633a7c4
LW
2814/* Require a module. */
2815
954c1994 2816/*
ccfc67b7
JH
2817=head1 Embedding Functions
2818
954c1994
GS
2819=for apidoc p||require_pv
2820
7d3fb230
BS
2821Tells Perl to C<require> the file named by the string argument. It is
2822analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2823implemented that way; consider using load_module instead.
954c1994 2824
7d3fb230 2825=cut */
954c1994 2826
4633a7c4 2827void
864dbfa3 2828Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2829{
97aff369 2830 dVAR;
d3acc0f7 2831 dSP;
97aff369 2832 SV* sv;
e788e7d3 2833 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2834 PUTBACK;
be41e5d9
NC
2835 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2836 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2837 SPAGAIN;
2838 POPSTACK;
79072805
LW
2839}
2840
79072805 2841void
e1ec3a88 2842Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2843{
71315bf2 2844 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2845
c4420975 2846 if (gv)
14befaf4 2847 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2848}
2849
76e3520e 2850STATIC void
e1ec3a88 2851S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2852{
ab821d7f 2853 /* This message really ought to be max 23 lines.
75c72d73 2854 * Removed -h because the user already knows that option. Others? */
fb73857a 2855
27da23d5 2856 static const char * const usage_msg[] = {
aefc56c5
SF
2857"-0[octal] specify record separator (\\0, if no argument)",
2858"-A[mod][=pattern] activate all/given assertions",
2859"-a autosplit mode with -n or -p (splits $_ into @F)",
2860"-C[number/list] enables the listed Unicode features",
2861"-c check syntax only (runs BEGIN and CHECK blocks)",
2862"-d[:debugger] run program under debugger",
2863"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2864"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2865"-E program like -e, but enables all optional features",
aefc56c5 2866"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2867"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2868"-i[extension] edit <> files in place (makes backup if extension supplied)",
2869"-Idirectory specify @INC/#include directory (several -I's allowed)",
2870"-l[octal] enable line ending processing, specifies line terminator",
2871"-[mM][-]module execute \"use/no module...\" before executing program",
2872"-n assume \"while (<>) { ... }\" loop around program",
2873"-p assume loop like -n but print line also, like sed",
2874"-P run program through C preprocessor before compilation",
2875"-s enable rudimentary parsing for switches after programfile",
2876"-S look for programfile using PATH environment variable",
2877"-t enable tainting warnings",
2878"-T enable tainting checks",
2879"-u dump core after parsing program",
2880"-U allow unsafe operations",
2881"-v print version, subversion (includes VERY IMPORTANT perl info)",
2882"-V[:variable] print configuration summary (or a single Config.pm variable)",
2883"-w enable many useful warnings (RECOMMENDED)",
2884"-W enable all warnings",
2885"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2886"-X disable all warnings",
fb73857a
PP
2887"\n",
2888NULL
2889};
27da23d5 2890 const char * const *p = usage_msg;
fb73857a 2891
b0e47665
GS
2892 PerlIO_printf(PerlIO_stdout(),
2893 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2894 name);
fb73857a 2895 while (*p)
b0e47665 2896 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2897}
2898
b4ab917c
DM
2899/* convert a string of -D options (or digits) into an int.
2900 * sets *s to point to the char after the options */
2901
2902#ifdef DEBUGGING
2903int
e1ec3a88 2904Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2905{
27da23d5 2906 static const char * const usage_msgd[] = {
e6e64d9b
JC
2907 " Debugging flag values: (see also -d)",
2908 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2909 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2910 " l Context (loop) stack processing",
2911 " t Trace execution",
2912 " o Method and overloading resolution",
2913 " c String/numeric conversions",
2914 " P Print profiling info, preprocessor command for -P, source file input state",
2915 " m Memory allocation",
2916 " f Format processing",
2917 " r Regular expression parsing and execution",
2918 " x Syntax tree dump",
3679267a 2919 " u Tainting checks",
e6e64d9b
JC
2920 " H Hash dump -- usurps values()",
2921 " X Scratchpad allocation",
2922 " D Cleaning up",
2923 " S Thread synchronization",
2924 " T Tokenising",
2925 " R Include reference counts of dumped variables (eg when using -Ds)",
2926 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2927 " v Verbose: use in conjunction with other flags",
2928 " C Copy On Write",
2929 " A Consistency checks on internal structures",
3679267a 2930 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2931 NULL
2932 };
b4ab917c
DM
2933 int i = 0;
2934 if (isALPHA(**s)) {
2935 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2936 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2937
2938 for (; isALNUM(**s); (*s)++) {
c4420975 2939 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2940 if (d)
2941 i |= 1 << (d - debopts);
2942 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2943 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2944 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2945 }
2946 }
e6e64d9b 2947 else if (isDIGIT(**s)) {
b4ab917c
DM
2948 i = atoi(*s);
2949 for (; isALNUM(**s); (*s)++) ;
2950 }
ddcf8bc1 2951 else if (givehelp) {
06e869a4 2952 const char *const *p = usage_msgd;
e6e64d9b
JC
2953 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2954 }
b4ab917c
DM
2955# ifdef EBCDIC
2956 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2957 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2958 "-Dp not implemented on this platform\n");
2959# endif
2960 return i;
2961}
2962#endif
2963
79072805
LW
2964/* This routine handles any switches that can be given during run */
2965
2966char *
97bd5664 2967Perl_moreswitches(pTHX_ char *s)
79072805 2968{
27da23d5 2969 dVAR;
84c133a0 2970 UV rschar;
79072805
LW
2971
2972 switch (*s) {
2973 case '0':
a863c7d1 2974 {
f2095865 2975 I32 flags = 0;
a3b680e6 2976 STRLEN numlen;
f2095865
JH
2977
2978 SvREFCNT_dec(PL_rs);
2979 if (s[1] == 'x' && s[2]) {
a3b680e6 2980 const char *e = s+=2;
f2095865
JH
2981 U8 *tmps;
2982
a3b680e6
AL
2983 while (*e)
2984 e++;
f2095865
JH
2985 numlen = e - s;
2986 flags = PERL_SCAN_SILENT_ILLDIGIT;
2987 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2988 if (s + numlen < e) {
2989 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2990 numlen = 0;
2991 s--;
2992 }
396482e1 2993 PL_rs = newSVpvs("");
c5661c80 2994 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2995 tmps = (U8*)SvPVX(PL_rs);
2996 uvchr_to_utf8(tmps, rschar);
2997 SvCUR_set(PL_rs, UNISKIP(rschar));
2998 SvUTF8_on(PL_rs);
2999 }
3000 else {
3001 numlen = 4;
3002 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3003 if (rschar & ~((U8)~0))
3004 PL_rs = &PL_sv_undef;
3005 else if (!rschar && numlen >= 2)
396482e1 3006 PL_rs = newSVpvs("");
f2095865
JH
3007 else {
3008 char ch = (char)rschar;
3009 PL_rs = newSVpvn(&ch, 1);
3010 }
3011 }
800633c3 3012 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3013 return s + numlen;
a863c7d1 3014 }
46487f74 3015 case 'C':
a05d7ebb 3016 s++;
dd374669 3017 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3018 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3019 PL_utf8cache = -1;
46487f74 3020 return s;
2304df62 3021 case 'F':
3280af22 3022 PL_minus_F = TRUE;
ebce5377
RGS
3023 PL_splitstr = ++s;
3024 while (*s && !isSPACE(*s)) ++s;
e49e380e 3025 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3026 return s;
79072805 3027 case 'a':
3280af22 3028 PL_minus_a = TRUE;
79072805
LW
3029 s++;
3030 return s;
3031 case 'c':
3280af22 3032 PL_minus_c = TRUE;
79072805
LW
3033 s++;
3034 return s;
3035 case 'd':
97bd5664 3036 forbid_setid('d', -1);
4633a7c4 3037 s++;
2cbb2ee1
RGS
3038
3039 /* -dt indicates to the debugger that threads will be used */
3040 if (*s == 't' && !isALNUM(s[1])) {
3041 ++s;
3042 my_setenv("PERL5DB_THREADED", "1");
3043 }
3044
70c94a19
RR
3045 /* The following permits -d:Mod to accepts arguments following an =
3046 in the fashion that -MSome::Mod does. */
3047 if (*s == ':' || *s == '=') {
06b5626a 3048 const char *start;
396482e1 3049 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3050 start = ++s;
3051 /* We now allow -d:Module=Foo,Bar */
3052 while(isALNUM(*s) || *s==':') ++s;
3053 if (*s != '=')
3054 sv_catpv(sv, start);
3055 else {
3056 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3057 /* Don't use NUL as q// delimiter here, this string goes in the
3058 * environment. */
3059 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3060 }
4633a7c4 3061 s += strlen(s);
184f32ec 3062 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3063 }
ed094faf 3064 if (!PL_perldb) {
3280af22 3065 PL_perldb = PERLDB_ALL;
a0d0e21e 3066 init_debugger();
ed094faf 3067 }
79072805
LW
3068 return s;
3069 case 'D':
0453d815 3070 {
79072805 3071#ifdef DEBUGGING
97bd5664 3072 forbid_setid('D', -1);
b4ab917c 3073 s++;
dd374669 3074 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3075#else /* !DEBUGGING */
0453d815 3076 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3077 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3078 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3079 for (s++; isALNUM(*s); s++) ;
79072805 3080#endif
79072805 3081 return s;
0453d815 3082 }
4633a7c4 3083 case 'h':
ac27b0f5 3084 usage(PL_origargv[0]);
7ca617d0 3085 my_exit(0);
79072805 3086 case 'i':
43c5f42d 3087 Safefree(PL_inplace);
c030f24b
GH
3088#if defined(__CYGWIN__) /* do backup extension automagically */
3089 if (*(s+1) == '\0') {
c86a4f2e 3090 PL_inplace = savepvs(".bak");
c030f24b
GH
3091 return s+1;
3092 }
3093#endif /* __CYGWIN__ */
5ef5d758 3094 {
d4c19fe8 3095 const char * const start = ++s;
5ef5d758
NC
3096 while (*s && !isSPACE(*s))
3097 ++s;
3098
3099 PL_inplace = savepvn(start, s - start);
3100 }
7b8d334a 3101 if (*s) {
5ef5d758 3102 ++s;
7b8d334a 3103 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3104 s++;
7b8d334a 3105 }
fb73857a 3106 return s;
4e49a025 3107 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3108 forbid_setid('I', -1);
fb73857a
PP
3109 ++s;
3110 while (*s && isSPACE(*s))
3111 ++s;
3112 if (*s) {
774d564b 3113 char *e, *p;
0df16ed7
GS
3114 p = s;
3115 /* ignore trailing spaces (possibly followed by other switches) */
3116 do {
3117 for (e = p; *e && !isSPACE(*e); e++) ;
3118 p = e;
3119 while (isSPACE(*p))
3120 p++;
3121 } while (*p && *p != '-');
3122 e = savepvn(s, e-s);
88fe16b2 3123 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3124 Safefree(e);
3125 s = p;
3126 if (*s == '-')
3127 s++;
79072805
LW
3128 }
3129 else
a67e862a 3130 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3131 return s;
79072805 3132 case 'l':
3280af22 3133 PL_minus_l = TRUE;
79072805 3134 s++;
7889fe52
NIS
3135 if (PL_ors_sv) {
3136 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3137 PL_ors_sv = NULL;
7889fe52 3138 }
79072805 3139 if (isDIGIT(*s)) {
53305cf1 3140 I32 flags = 0;
a3b680e6 3141 STRLEN numlen;
396482e1 3142 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3143 numlen = 3 + (*s == '0');
3144 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3145 s += numlen;
3146 }
3147 else {
8bfdd7d9 3148 if (RsPARA(PL_rs)) {
396482e1 3149 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3150 }
3151 else {
8bfdd7d9 3152 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3153 }
79072805
LW
3154 }
3155 return s;
06492da6 3156 case 'A':
97bd5664 3157 forbid_setid('A', -1);
930366bd
RGS
3158 if (!PL_preambleav)
3159 PL_preambleav = newAV();
aefc56c5
SF
3160 s++;
3161 {
44f8325f 3162 char * const start = s;
396482e1 3163 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3164 while(isALNUM(*s) || *s == ':') ++s;
3165 if (s != start) {
396482e1 3166 sv_catpvs(sv, "::");
aefc56c5
SF
3167 sv_catpvn(sv, start, s-start);
3168 }
3169 if (*s == '=') {
0c5a913d 3170 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3171 s+=strlen(s);
3172 }
3173 else if (*s != '\0') {
551405c4 3174 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3175 }
06492da6 3176 av_push(PL_preambleav, sv);
aefc56c5 3177 return s;
06492da6 3178 }
1a30305b 3179 case 'M':
97bd5664 3180 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3181 /* FALL THROUGH */
3182 case 'm':
97bd5664 3183 forbid_setid('m', -1); /* XXX ? */
1a30305b 3184 if (*++s) {
a5f75d66 3185 char *start;
11343788 3186 SV *sv;
e1ec3a88 3187 const char *use = "use ";
a5f75d66 3188 /* -M-foo == 'no foo' */
d0043bd1
NC
3189 /* Leading space on " no " is deliberate, to make both
3190 possibilities the same length. */
3191 if (*s == '-') { use = " no "; ++s; }
3192 sv = newSVpvn(use,4);
a5f75d66 3193 start = s;
1a30305b 3194 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3195 while(isALNUM(*s) || *s==':') ++s;
3196 if (*s != '=') {
11343788 3197 sv_catpv(sv, start);
c07a80fd
PP
3198 if (*(start-1) == 'm') {
3199 if (*s != '\0')
cea2e8a9 3200 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3201 sv_catpvs( sv, " ()");
c07a80fd
PP
3202 }
3203 } else {
6df41af2 3204 if (s == start)
be98fb35
GS
3205 Perl_croak(aTHX_ "Module name required with -%c option",
3206 s[-1]);
11343788 3207 sv_catpvn(sv, start, s-start);
396482e1
GA
3208 sv_catpvs(sv, " split(/,/,q");
3209 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3210 sv_catpv(sv, ++s);
396482e1 3211 sv_catpvs(sv, "\0)");
c07a80fd 3212 }
1a30305b 3213 s += strlen(s);
5c831c24 3214 if (!PL_preambleav)
3280af22
NIS
3215 PL_preambleav = newAV();
3216 av_push(PL_preambleav, sv);
1a30305b
PP
3217 }
3218 else
9e81e6a1 3219 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3220 return s;
79072805 3221 case 'n':
3280af22 3222 PL_minus_n = TRUE;
79072805
LW
3223 s++;
3224 return s;
3225 case 'p':
3280af22 3226 PL_minus_p = TRUE;
79072805
LW
3227 s++;
3228 return s;
3229 case 's':
97bd5664 3230 forbid_setid('s', -1);
3280af22 3231 PL_doswitches = TRUE;
79072805
LW
3232 s++;
3233 return s;
6537fe72
MS
3234 case 't':
3235 if (!PL_tainting)
22f7c9c9 3236 TOO_LATE_FOR('t');
6537fe72
MS
3237 s++;
3238 return s;
463ee0b2 3239 case 'T':
3280af22 3240 if (!PL_tainting)
22f7c9c9 3241 TOO_LATE_FOR('T');
463ee0b2
LW
3242 s++;
3243 return s;
79072805 3244 case 'u':
bf4acbe4
GS
3245#ifdef MACOS_TRADITIONAL
3246 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3247#endif
3280af22 3248 PL_do_undump = TRUE;
79072805
LW
3249 s++;
3250 return s;
3251 case 'U':
3280af22 3252 PL_unsafe = TRUE;
79072805
LW
3253 s++;
3254 return s;
3255 case 'v':
d7aa5382 3256 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3257 upg_version(PL_patchlevel);
8e9464f1 3258#if !defined(DGUX)
b0e47665 3259 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3260 Perl_form(aTHX_ "\nThis is perl, %"SVf
3261#ifdef PERL_PATCHNUM
3262 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3263#endif
3264 " built for %s",
95b63a38
JH
3265 (void*)vstringify(PL_patchlevel),
3266 ARCHNAME));
8e9464f1
JH
3267#else /* DGUX */
3268/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3269 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3270 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3271 vstringify(PL_patchlevel)));
8e9464f1
JH
3272 PerlIO_printf(PerlIO_stdout(),
3273 Perl_form(aTHX_ " built under %s at %s %s\n",
3274 OSNAME, __DATE__, __TIME__));
3275 PerlIO_printf(PerlIO_stdout(),
3276 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3277 OSVERS));
8e9464f1
JH
3278#endif /* !DGUX */
3279
fb73857a
PP
3280#if defined(LOCAL_PATCH_COUNT)
3281 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3282 PerlIO_printf(PerlIO_stdout(),
3283 "\n(with %d registered patch%s, "
3284 "see perl -V for more detail)",
bb7a0f54 3285 LOCAL_PATCH_COUNT,
b0e47665 3286 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3287#endif
1a30305b 3288
b0e47665 3289 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3290 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3291#ifdef MACOS_TRADITIONAL
3292 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3293 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3294 "maintained by Chris Nandor\n");
eae9c151 3295#endif
79072805 3296#ifdef MSDOS
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3299#endif
3300#ifdef DJGPP
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3303 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3304#endif
79072805 3305#ifdef OS2
b0e47665
GS
3306 PerlIO_printf(PerlIO_stdout(),
3307 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3308 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3309#endif
79072805 3310#ifdef atarist
b0e47665
GS
3311 PerlIO_printf(PerlIO_stdout(),
3312 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3313#endif
a3f9223b 3314#ifdef __BEOS__
b0e47665
GS
3315 PerlIO_printf(PerlIO_stdout(),
3316 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3317#endif
1d84e8df 3318#ifdef MPE
b0e47665 3319 PerlIO_printf(PerlIO_stdout(),
e583a879 3320 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3321#endif
9d116dd7 3322#ifdef OEMVS
b0e47665
GS
3323 PerlIO_printf(PerlIO_stdout(),
3324 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3325#endif
495c5fdc 3326#ifdef __VOS__
b0e47665 3327 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3328 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3329#endif
092bebab 3330#ifdef __OPEN_VM
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3333#endif
a1a0e61e 3334#ifdef POSIX_BC
b0e47665
GS
3335 PerlIO_printf(PerlIO_stdout(),
3336 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3337#endif
61ae2fbf 3338#ifdef __MINT__
b0e47665
GS
3339 PerlIO_printf(PerlIO_stdout(),
3340 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3341#endif
f83d2536 3342#ifdef EPOC
b0e47665 3343 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3344 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3345#endif
e1caacb4 3346#ifdef UNDER_CE
b475b3e6
JH
3347 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3348 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3349 wce_hitreturn();
3350#endif
a0fd4948 3351#ifdef __SYMBIAN32__
27da23d5
JH
3352 PerlIO_printf(PerlIO_stdout(),
3353 "Symbian port by Nokia, 2004-2005\n");
3354#endif
baed7233
DL
3355#ifdef BINARY_BUILD_NOTICE
3356 BINARY_BUILD_NOTICE;
3357#endif
b0e47665
GS
3358 PerlIO_printf(PerlIO_stdout(),
3359 "\n\
79072805 3360Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3361GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3362Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3363this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3364Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3365 my_exit(0);
79072805 3366 case 'w':
599cee73 3367 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3368 PL_dowarn |= G_WARN_ON;
599cee73
PM
3369 s++;
3370 return s;
3371 case 'W':
ac27b0f5 3372 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3373 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3374 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3375 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3376 s++;
3377 return s;
3378 case 'X':
ac27b0f5 3379 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3380 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3381 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3382 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3383 s++;
3384 return s;
a0d0e21e 3385 case '*':
79072805
LW
3386 case ' ':
3387 if (s[1] == '-') /* Additional switches on #! line. */
3388 return s+2;
3389 break;
a0d0e21e 3390 case '-':
79072805 3391 case 0:
51882d45 3392#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3393 case '\r':
3394#endif
79072805
LW
3395 case '\n':
3396 case '\t':
3397 break;
aa689395
PP
3398#ifdef ALTERNATE_SHEBANG
3399 case 'S': /* OS/2 needs -S on "extproc" line. */
3400 break;
3401#endif
a0d0e21e 3402 case 'P':
3280af22 3403 if (PL_preprocess)
a0d0e21e
LW
3404 return s+1;
3405 /* FALL THROUGH */
79072805 3406 default:
cea2e8a9 3407 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3408 }
bd61b366 3409 return NULL;
79072805
LW
3410}
3411
3412/* compliments of Tom Christiansen */
3413
3414/* unexec() can be found in the Gnu emacs distribution */
ee580363 3415/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3416
3417void
864dbfa3 3418Perl_my_unexec(pTHX)
79072805 3419{
b37c2d43 3420 PERL_UNUSED_CONTEXT;
79072805 3421#ifdef UNEXEC
b37c2d43
AL
3422 SV * prog = newSVpv(BIN_EXP, 0);
3423 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3424 int status = 1;
79072805
LW
3425 extern int etext;
3426
396482e1 3427 sv_catpvs(prog, "/perl");
396482e1 3428 sv_catpvs(file, ".perldump");
79072805 3429
ee580363
GS
3430 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3431 /* unexec prints msg to stderr in case of failure */
6ad3d225 3432 PerlProc_exit(status);
79072805 3433#else
a5f75d66
AD
3434# ifdef VMS
3435# include <lib$routines.h>
3436 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3437# elif defined(WIN32) || defined(__CYGWIN__)
3438 Perl_croak(aTHX_ "dump is not supported");
aa689395 3439# else
79072805 3440 ABORT(); /* for use with undump */
aa689395 3441# endif
a5f75d66 3442#endif
79072805
LW
3443}
3444
cb68f92d
GS
3445/* initialize curinterp */
3446STATIC void
cea2e8a9 3447S_init_interp(pTHX)
cb68f92d 3448{
97aff369 3449 dVAR;
acfe0abc
GS
3450#ifdef MULTIPLICITY
3451# define PERLVAR(var,type)
3452# define PERLVARA(var,n,type)
3453# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3454# define PERLVARI(var,type,init) aTHX->var = init;
3455# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3456# else
acfe0abc
GS
3457# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3458# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3459# endif
acfe0abc 3460# include "intrpvar.h"
b7f7fff6 3461# include "thrdvar.h"
acfe0abc
GS
3462# undef PERLVAR
3463# undef PERLVARA
3464# undef PERLVARI
3465# undef PERLVARIC
3466#else
3467# define PERLVAR(var,type)
3468# define PERLVARA(var,n,type)
3469# define PERLVARI(var,type,init) PL_##var = init;
3470# define PERLVARIC(var,type,init) PL_##var = init;
3471# include "intrpvar.h"
b7f7fff6 3472# include "thrdvar.h"
acfe0abc
GS
3473# undef PERLVAR
3474# undef PERLVARA
3475# undef PERLVARI
3476# undef PERLVARIC
cb68f92d
GS
3477#endif
3478
46ab3289
NC
3479 /* As these are inside a structure, PERLVARI isn't capable of initialising
3480 them */
3481 PL_regindent = 0;
6c3f0a89
NC
3482 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3483 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3484}
3485
76e3520e 3486STATIC void
cea2e8a9 3487S_init_main_stash(pTHX)
79072805 3488{
97aff369 3489 dVAR;
463ee0b2 3490 GV *gv;
6e72f9df 3491
3280af22 3492 PL_curstash = PL_defstash = newHV();
23579a14
NC
3493 /* We know that the string "main" will be in the global shared string
3494 table, so it's a small saving to use it rather than allocate another
3495 8 bytes. */
18916d0d 3496 PL_curstname = newSVpvs_share("main");
fafc274c 3497 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3498 /* If we hadn't caused another reference to "main" to be in the shared
3499 string table above, then it would be worth reordering these two,
3500 because otherwise all we do is delete "main" from it as a consequence
3501 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3502 SvREFCNT_dec(GvHV(gv));
23579a14 3503 hv_name_set(PL_defstash, "main", 4,