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perlfunc.pod: Lexical visibility hint in require docu
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a0d0e21e
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1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
fdf8c088 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
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9 */
10
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11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
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85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
JH
110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
d6f07c05
AL
140#define CALL_BODY_EVAL(myop) \
141 if (PL_op == (myop)) \
142 PL_op = Perl_pp_entereval(aTHX); \
143 if (PL_op) \
144 CALLRUNOPS(aTHX);
145
146#define CALL_BODY_SUB(myop) \
147 if (PL_op == (myop)) \
148 PL_op = Perl_pp_entersub(aTHX); \
149 if (PL_op) \
150 CALLRUNOPS(aTHX);
151
152#define CALL_LIST_BODY(cv) \
153 PUSHMARK(PL_stack_sp); \
154 call_sv((SV*)(cv), G_EVAL|G_DISCARD);
155
e6827a76 156static void
daa7d858 157S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 158{
27da23d5 159 dVAR;
e6827a76
NC
160 if (!PL_curinterp) {
161 PERL_SET_INTERP(my_perl);
3db8f154 162#if defined(USE_ITHREADS)
e6827a76
NC
163 INIT_THREADS;
164 ALLOC_THREAD_KEY;
165 PERL_SET_THX(my_perl);
166 OP_REFCNT_INIT;
71ad1b0c 167 HINTS_REFCNT_INIT;
e6827a76 168 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 169# endif
016af4f1
DM
170#ifdef PERL_IMPLICIT_CONTEXT
171 MUTEX_INIT(&PL_my_ctx_mutex);
172# endif
e6827a76 173 }
c0bce9aa
NC
174#if defined(USE_ITHREADS)
175 else
176#else
177 /* This always happens for non-ithreads */
178#endif
179 {
e6827a76
NC
180 PERL_SET_THX(my_perl);
181 }
182}
06d86050 183
32e30700
GS
184#ifdef PERL_IMPLICIT_SYS
185PerlInterpreter *
7766f137
GS
186perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
187 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
188 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
189 struct IPerlDir* ipD, struct IPerlSock* ipS,
190 struct IPerlProc* ipP)
191{
192 PerlInterpreter *my_perl;
9f653bb5 193 /* Newx() needs interpreter, so call malloc() instead */
32e30700 194 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 195 S_init_tls_and_interp(my_perl);
32e30700
GS
196 Zero(my_perl, 1, PerlInterpreter);
197 PL_Mem = ipM;
7766f137
GS
198 PL_MemShared = ipMS;
199 PL_MemParse = ipMP;
32e30700
GS
200 PL_Env = ipE;
201 PL_StdIO = ipStd;
202 PL_LIO = ipLIO;
203 PL_Dir = ipD;
204 PL_Sock = ipS;
205 PL_Proc = ipP;
7cb608b5 206 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 207
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208 return my_perl;
209}
210#else
954c1994
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211
212/*
ccfc67b7
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213=head1 Embedding Functions
214
954c1994
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215=for apidoc perl_alloc
216
217Allocates a new Perl interpreter. See L<perlembed>.
218
219=cut
220*/
221
93a17b20 222PerlInterpreter *
cea2e8a9 223perl_alloc(void)
79072805 224{
cea2e8a9 225 PerlInterpreter *my_perl;
79072805 226
9f653bb5 227 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 228 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 229
e6827a76 230 S_init_tls_and_interp(my_perl);
7cb608b5 231#ifndef PERL_TRACK_MEMPOOL
07409e01 232 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
233#else
234 Zero(my_perl, 1, PerlInterpreter);
235 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
236 return my_perl;
237#endif
79072805 238}
32e30700 239#endif /* PERL_IMPLICIT_SYS */
79072805 240
954c1994
GS
241/*
242=for apidoc perl_construct
243
244Initializes a new Perl interpreter. See L<perlembed>.
245
246=cut
247*/
248
79072805 249void
0cb96387 250perl_construct(pTHXx)
79072805 251{
27da23d5 252 dVAR;
ed6c66dd 253 PERL_UNUSED_ARG(my_perl);
8990e307 254#ifdef MULTIPLICITY
54aff467 255 init_interp();
ac27b0f5 256 PL_perl_destruct_level = 1;
54aff467
GS
257#else
258 if (PL_perl_destruct_level > 0)
259 init_interp();
260#endif
33f46ff6 261 /* Init the real globals (and main thread)? */
3280af22 262 if (!PL_linestr) {
2aea9f8a
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263 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
264
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NC
265 PL_linestr = newSV_type(SVt_PVIV);
266 SvGROW(PL_linestr, 80);
79072805 267
3280af22 268 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
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269 /* set read-only and try to insure than we wont see REFCNT==0
270 very often */
271
3280af22
NIS
272 SvREADONLY_on(&PL_sv_undef);
273 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 274
3280af22 275 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
276 /* value lookup in void context - happens to have the side effect
277 of caching the numeric forms. */
278 SvIV(&PL_sv_no);
3280af22
NIS
279 SvNV(&PL_sv_no);
280 SvREADONLY_on(&PL_sv_no);
281 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 282
3280af22 283 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 284 SvIV(&PL_sv_yes);
3280af22
NIS
285 SvNV(&PL_sv_yes);
286 SvREADONLY_on(&PL_sv_yes);
287 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
288
289 SvREADONLY_on(&PL_sv_placeholder);
290 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 291 }
79072805 292
8aad04aa 293 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 294#ifdef PERL_USES_PL_PIDSTATUS
3280af22 295 PL_pidstatus = newHV();
ca0c25f6 296#endif
79072805
LW
297 }
298
396482e1 299 PL_rs = newSVpvs("\n");
dc92893f 300
cea2e8a9 301 init_stacks();
79072805 302
748a9306 303 init_ids();
3280af22 304 PL_lex_state = LEX_NOTPARSING;
a5f75d66 305
312caa8e 306 JMPENV_BOOTSTRAP;
f86702cc
PP
307 STATUS_ALL_SUCCESS;
308
0672f40e 309 init_i18nl10n(1);
36477c24 310 SET_NUMERIC_STANDARD();
0b5b802d 311
ab821d7f 312#if defined(LOCAL_PATCH_COUNT)
3280af22 313 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
314#endif
315
52853b95
GS
316#ifdef HAVE_INTERP_INTERN
317 sys_intern_init();
318#endif
319
3a1ee7e8 320 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 321
3280af22
NIS
322 PL_fdpid = newAV(); /* for remembering popen pids by fd */
323 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 324 PL_errors = newSVpvs("");
48c6b404 325 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
326 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
327 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 328#ifdef USE_ITHREADS
29a861e7
NC
329 /* First entry is an array of empty elements */
330 Perl_av_create_and_push(aTHX_ &PL_regex_padav,(SV*)newAV());
13137afc 331 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 332#endif
e5dd39fc 333#ifdef USE_REENTRANT_API
59bd0823 334 Perl_reentrant_init(aTHX);
e5dd39fc 335#endif
3d47000e
AB
336
337 /* Note that strtab is a rather special HV. Assumptions are made
338 about not iterating on it, and not adding tie magic to it.
339 It is properly deallocated in perl_destruct() */
340 PL_strtab = newHV();
341
3d47000e
AB
342 HvSHAREKEYS_off(PL_strtab); /* mandatory */
343 hv_ksplit(PL_strtab, 512);
344
0631ea03
AB
345#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
346 _dyld_lookup_and_bind
347 ("__environ", (unsigned long *) &environ_pointer, NULL);
348#endif /* environ */
349
2f42fcb0
JH
350#ifndef PERL_MICRO
351# ifdef USE_ENVIRON_ARRAY
0631ea03 352 PL_origenviron = environ;
2f42fcb0 353# endif
0631ea03
AB
354#endif
355
5311654c 356 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 357 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
358 * BeOS has those, but returns the wrong value.
359 * The HZ if not originally defined has been by now
360 * been defined as CLK_TCK, if available. */
dbc1d986 361#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
362 PL_clocktick = sysconf(_SC_CLK_TCK);
363 if (PL_clocktick <= 0)
364#endif
365 PL_clocktick = HZ;
366
081fc587
AB
367 PL_stashcache = newHV();
368
e6830b13
NC
369 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
370 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 371
27da23d5
JH
372#ifdef HAS_MMAP
373 if (!PL_mmap_page_size) {
374#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
375 {
376 SETERRNO(0, SS_NORMAL);
377# ifdef _SC_PAGESIZE
378 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
379# else
380 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
381# endif
382 if ((long) PL_mmap_page_size < 0) {
383 if (errno) {
44f8325f 384 SV * const error = ERRSV;
d4c19fe8 385 SvUPGRADE(error, SVt_PV);
0510663f 386 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
387 }
388 else
389 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
390 }
391 }
392#else
393# ifdef HAS_GETPAGESIZE
394 PL_mmap_page_size = getpagesize();
395# else
396# if defined(I_SYS_PARAM) && defined(PAGESIZE)
397 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
398# endif
399# endif
400#endif
401 if (PL_mmap_page_size <= 0)
402 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
403 (IV) PL_mmap_page_size);
404 }
405#endif /* HAS_MMAP */
406
407#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
408 PL_timesbase.tms_utime = 0;
409 PL_timesbase.tms_stime = 0;
410 PL_timesbase.tms_cutime = 0;
411 PL_timesbase.tms_cstime = 0;
412#endif
413
8990e307 414 ENTER;
79072805
LW
415}
416
954c1994 417/*
62375a60
NIS
418=for apidoc nothreadhook
419
420Stub that provides thread hook for perl_destruct when there are
421no threads.
422
423=cut
424*/
425
426int
4e9e3734 427Perl_nothreadhook(pTHX)
62375a60 428{
96a5add6 429 PERL_UNUSED_CONTEXT;
62375a60
NIS
430 return 0;
431}
432
41e4abd8
NC
433#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
434void
435Perl_dump_sv_child(pTHX_ SV *sv)
436{
437 ssize_t got;
bf357333
NC
438 const int sock = PL_dumper_fd;
439 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
440 union control_un control;
441 struct msghdr msg;
808ad2d0 442 struct iovec vec[2];
bf357333 443 struct cmsghdr *cmptr;
808ad2d0
NC
444 int returned_errno;
445 unsigned char buffer[256];
41e4abd8 446
bf357333 447 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
448 return;
449
450 PerlIO_flush(Perl_debug_log);
451
bf357333
NC
452 /* All these shenanigans are to pass a file descriptor over to our child for
453 it to dump out to. We can't let it hold open the file descriptor when it
454 forks, as the file descriptor it will dump to can turn out to be one end
455 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 456 be open, the wait would be forever.) */
bf357333
NC
457
458 msg.msg_control = control.control;
459 msg.msg_controllen = sizeof(control.control);
460 /* We're a connected socket so we don't need a destination */
461 msg.msg_name = NULL;
462 msg.msg_namelen = 0;
463 msg.msg_iov = vec;
808ad2d0 464 msg.msg_iovlen = 1;
bf357333
NC
465
466 cmptr = CMSG_FIRSTHDR(&msg);
467 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
468 cmptr->cmsg_level = SOL_SOCKET;
469 cmptr->cmsg_type = SCM_RIGHTS;
470 *((int *)CMSG_DATA(cmptr)) = 1;
471
472 vec[0].iov_base = (void*)&sv;
473 vec[0].iov_len = sizeof(sv);
474 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
475
476 if(got < 0) {
bf357333 477 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
478 abort();
479 }
bf357333
NC
480 if(got < sizeof(sv)) {
481 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
482 abort();
483 }
484
808ad2d0
NC
485 /* Return protocol is
486 int: errno value
487 unsigned char: length of location string (0 for empty)
488 unsigned char*: string (not terminated)
489 */
490 vec[0].iov_base = (void*)&returned_errno;
491 vec[0].iov_len = sizeof(returned_errno);
492 vec[1].iov_base = buffer;
493 vec[1].iov_len = 1;
494
495 got = readv(sock, vec, 2);
41e4abd8
NC
496
497 if(got < 0) {
498 perror("Debug leaking scalars parent read failed");
808ad2d0 499 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
500 abort();
501 }
808ad2d0 502 if(got < sizeof(returned_errno) + 1) {
41e4abd8 503 perror("Debug leaking scalars parent short read");
808ad2d0 504 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
505 abort();
506 }
507
808ad2d0
NC
508 if (*buffer) {
509 got = read(sock, buffer + 1, *buffer);
510 if(got < 0) {
511 perror("Debug leaking scalars parent read 2 failed");
512 PerlIO_flush(PerlIO_stderr());
513 abort();
514 }
515
516 if(got < *buffer) {
517 perror("Debug leaking scalars parent short read 2");
518 PerlIO_flush(PerlIO_stderr());
519 abort();
520 }
521 }
522
523 if (returned_errno || *buffer) {
524 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
525 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
526 returned_errno, strerror(returned_errno));
41e4abd8
NC
527 }
528}
529#endif
530
62375a60 531/*
954c1994
GS
532=for apidoc perl_destruct
533
534Shuts down a Perl interpreter. See L<perlembed>.
535
536=cut
537*/
538
31d77e54 539int
0cb96387 540perl_destruct(pTHXx)
79072805 541{
27da23d5 542 dVAR;
8ea43dc8 543 VOL int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 544 HV *hv;
2aa47728 545#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
546 pid_t child;
547#endif
8990e307 548
ed6c66dd 549 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 550
7766f137
GS
551 /* wait for all pseudo-forked children to finish */
552 PERL_WAIT_FOR_CHILDREN;
553
3280af22 554 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
555#ifdef DEBUGGING
556 {
9d4ba2ae
AL
557 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
558 if (s) {
e1ec3a88 559 const int i = atoi(s);
5f05dabc
PP
560 if (destruct_level < i)
561 destruct_level = i;
562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
f3faeb53
AB
572 if (PL_endav && !PL_minus_c)
573 call_list(PL_scopestack_ix, PL_endav);
574 JMPENV_POP;
26f423df 575 }
f3faeb53 576 LEAVE;
a0d0e21e
LW
577 FREETMPS;
578
e00b64d4 579 /* Need to flush since END blocks can produce output */
f13a2bc0 580 my_fflush_all();
e00b64d4 581
62375a60
NIS
582 if (CALL_FPTR(PL_threadhook)(aTHX)) {
583 /* Threads hook has vetoed further cleanup */
c301d606 584 PL_veto_cleanup = TRUE;
37038d91 585 return STATUS_EXIT;
62375a60
NIS
586 }
587
2aa47728
NC
588#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
589 if (destruct_level != 0) {
590 /* Fork here to create a child. Our child's job is to preserve the
591 state of scalars prior to destruction, so that we can instruct it
592 to dump any scalars that we later find have leaked.
593 There's no subtlety in this code - it assumes POSIX, and it doesn't
594 fail gracefully */
595 int fd[2];
596
597 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
598 perror("Debug leaking scalars socketpair failed");
599 abort();
600 }
601
602 child = fork();
603 if(child == -1) {
604 perror("Debug leaking scalars fork failed");
605 abort();
606 }
607 if (!child) {
608 /* We are the child */
3125a5a4
NC
609 const int sock = fd[1];
610 const int debug_fd = PerlIO_fileno(Perl_debug_log);
611 int f;
808ad2d0
NC
612 const char *where;
613 /* Our success message is an integer 0, and a char 0 */
614 static const char success[sizeof(int) + 1];
3125a5a4 615
2aa47728 616 close(fd[0]);
2aa47728 617
3125a5a4
NC
618 /* We need to close all other file descriptors otherwise we end up
619 with interesting hangs, where the parent closes its end of a
620 pipe, and sits waiting for (another) child to terminate. Only
621 that child never terminates, because it never gets EOF, because
bf357333
NC
622 we also have the far end of the pipe open. We even need to
623 close the debugging fd, because sometimes it happens to be one
624 end of a pipe, and a process is waiting on the other end for
625 EOF. Normally it would be closed at some point earlier in
626 destruction, but if we happen to cause the pipe to remain open,
627 EOF never occurs, and we get an infinite hang. Hence all the
628 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
629
630 f = sysconf(_SC_OPEN_MAX);
631 if(f < 0) {
808ad2d0
NC
632 where = "sysconf failed";
633 goto abort;
3125a5a4
NC
634 }
635 while (f--) {
636 if (f == sock)
637 continue;
3125a5a4
NC
638 close(f);
639 }
640
2aa47728
NC
641 while (1) {
642 SV *target;
bf357333
NC
643 union control_un control;
644 struct msghdr msg;
645 struct iovec vec[1];
646 struct cmsghdr *cmptr;
647 ssize_t got;
648 int got_fd;
649
650 msg.msg_control = control.control;
651 msg.msg_controllen = sizeof(control.control);
652 /* We're a connected socket so we don't need a source */
653 msg.msg_name = NULL;
654 msg.msg_namelen = 0;
655 msg.msg_iov = vec;
656 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
657
658 vec[0].iov_base = (void*)&target;
659 vec[0].iov_len = sizeof(target);
660
661 got = recvmsg(sock, &msg, 0);
2aa47728
NC
662
663 if(got == 0)
664 break;
665 if(got < 0) {
808ad2d0
NC
666 where = "recv failed";
667 goto abort;
2aa47728
NC
668 }
669 if(got < sizeof(target)) {
808ad2d0
NC
670 where = "short recv";
671 goto abort;
2aa47728 672 }
bf357333 673
808ad2d0
NC
674 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
675 where = "no cmsg";
676 goto abort;
677 }
678 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
679 where = "wrong cmsg_len";
680 goto abort;
681 }
682 if(cmptr->cmsg_level != SOL_SOCKET) {
683 where = "wrong cmsg_level";
684 goto abort;
685 }
686 if(cmptr->cmsg_type != SCM_RIGHTS) {
687 where = "wrong cmsg_type";
688 goto abort;
689 }
bf357333
NC
690
691 got_fd = *(int*)CMSG_DATA(cmptr);
692 /* For our last little bit of trickery, put the file descriptor
693 back into Perl_debug_log, as if we never actually closed it
694 */
808ad2d0
NC
695 if(got_fd != debug_fd) {
696 if (dup2(got_fd, debug_fd) == -1) {
697 where = "dup2";
698 goto abort;
699 }
700 }
2aa47728 701 sv_dump(target);
bf357333 702
2aa47728
NC
703 PerlIO_flush(Perl_debug_log);
704
808ad2d0 705 got = write(sock, &success, sizeof(success));
2aa47728
NC
706
707 if(got < 0) {
808ad2d0
NC
708 where = "write failed";
709 goto abort;
2aa47728 710 }
808ad2d0
NC
711 if(got < sizeof(success)) {
712 where = "short write";
713 goto abort;
2aa47728
NC
714 }
715 }
716 _exit(0);
808ad2d0
NC
717 abort:
718 {
719 int send_errno = errno;
720 unsigned char length = (unsigned char) strlen(where);
721 struct iovec failure[3] = {
722 {(void*)&send_errno, sizeof(send_errno)},
723 {&length, 1},
724 {(void*)where, length}
725 };
726 int got = writev(sock, failure, 3);
727 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
728 in the parent if we try to read from the socketpair after the
729 child has exited, even if there was data to read.
730 So sleep a bit to give the parent a fighting chance of
731 reading the data. */
732 sleep(2);
733 _exit((got == -1) ? errno : 0);
734 }
bf357333 735 /* End of child. */
2aa47728 736 }
41e4abd8 737 PL_dumper_fd = fd[0];
2aa47728
NC
738 close(fd[1]);
739 }
740#endif
741
ff0cee69
PP
742 /* We must account for everything. */
743
744 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
745 /* Do this now, because destroying ops can cause new SVs to be generated
746 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
747 PL_curcop to point to a valid op from which the filename structure
748 member is copied. */
749 PL_curcop = &PL_compiling;
3280af22 750 if (PL_main_root) {
4e380990
DM
751 /* ensure comppad/curpad to refer to main's pad */
752 if (CvPADLIST(PL_main_cv)) {
753 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
754 }
3280af22 755 op_free(PL_main_root);
5f66b61c 756 PL_main_root = NULL;
a0d0e21e 757 }
5f66b61c 758 PL_main_start = NULL;
3280af22 759 SvREFCNT_dec(PL_main_cv);
601f1833 760 PL_main_cv = NULL;
24d3c518 761 PL_dirty = TRUE;
ff0cee69 762
13621cfb
NIS
763 /* Tell PerlIO we are about to tear things apart in case
764 we have layers which are using resources that should
765 be cleaned up now.
766 */
767
768 PerlIO_destruct(aTHX);
769
3280af22 770 if (PL_sv_objcount) {
a0d0e21e
LW
771 /*
772 * Try to destruct global references. We do this first so that the
773 * destructors and destructees still exist. Some sv's might remain.
774 * Non-referenced objects are on their own.
775 */
a0d0e21e 776 sv_clean_objs();
bf9cdc68 777 PL_sv_objcount = 0;
a0de6cf5 778 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 779 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
780 }
781
5cd24f17 782 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 783 SvREFCNT_dec(PL_warnhook);
a0714e2c 784 PL_warnhook = NULL;
3280af22 785 SvREFCNT_dec(PL_diehook);
a0714e2c 786 PL_diehook = NULL;
5cd24f17 787
4b556e6c 788 /* call exit list functions */
3280af22 789 while (PL_exitlistlen-- > 0)
acfe0abc 790 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 791
3280af22 792 Safefree(PL_exitlist);
4b556e6c 793
1c4916e5
CB
794 PL_exitlist = NULL;
795 PL_exitlistlen = 0;
796
551a8b83 797 /* jettison our possibly duplicated environment */
4b647fb0
DM
798 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
799 * so we certainly shouldn't free it here
800 */
2f42fcb0 801#ifndef PERL_MICRO
4b647fb0 802#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 803 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
804#ifdef USE_ITHREADS
805 /* only main thread can free environ[0] contents */
806 && PL_curinterp == aTHX
807#endif
808 )
809 {
551a8b83
JH
810 I32 i;
811
812 for (i = 0; environ[i]; i++)
4b420006 813 safesysfree(environ[i]);
0631ea03 814
4b420006
JH
815 /* Must use safesysfree() when working with environ. */
816 safesysfree(environ);
551a8b83
JH
817
818 environ = PL_origenviron;
819 }
820#endif
2f42fcb0 821#endif /* !PERL_MICRO */
551a8b83 822
30985c42
JH
823 if (destruct_level == 0) {
824
825 DEBUG_P(debprofdump());
826
827#if defined(PERLIO_LAYERS)
828 /* No more IO - including error messages ! */
829 PerlIO_cleanup(aTHX);
830#endif
831
832 CopFILE_free(&PL_compiling);
833 CopSTASH_free(&PL_compiling);
834
835 /* The exit() function will do everything that needs doing. */
836 return STATUS_EXIT;
837 }
838
804ffa60 839 /* reset so print() ends up where we expect */
a0714e2c 840 setdefout(NULL);
804ffa60 841
5f8cb046
DM
842#ifdef USE_ITHREADS
843 /* the syntax tree is shared between clones
844 * so op_free(PL_main_root) only ReREFCNT_dec's
845 * REGEXPs in the parent interpreter
846 * we need to manually ReREFCNT_dec for the clones
847 */
848 {
849 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 850 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
851
852 while (i) {
c4420975 853 SV * const resv = ary[--i];
35061a7e
DM
854
855 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 856 /* this is PL_reg_curpm, already freed
35061a7e
DM
857 * flag is set in regexec.c:S_regtry
858 */
859 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 860 }
1cc8b4c5
AB
861 else if(SvREPADTMP(resv)) {
862 SvREPADTMP_off(resv);
863 }
a560f29b
NC
864 else if(SvIOKp(resv)) {
865 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
866 ReREFCNT_dec(re);
867 }
868 }
869 }
870 SvREFCNT_dec(PL_regex_padav);
7d49f689 871 PL_regex_padav = NULL;
5f8cb046
DM
872 PL_regex_pad = NULL;
873#endif
874
081fc587
AB
875 SvREFCNT_dec((SV*) PL_stashcache);
876 PL_stashcache = NULL;
877
5f05dabc
PP
878 /* loosen bonds of global variables */
879
3280af22
NIS
880 if(PL_rsfp) {
881 (void)PerlIO_close(PL_rsfp);
4608196e 882 PL_rsfp = NULL;
8ebc5c01
PP
883 }
884
885 /* Filters for program text */
3280af22 886 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 887 PL_rsfp_filters = NULL;
8ebc5c01 888
84386e14
RGS
889 if (PL_minus_F) {
890 Safefree(PL_splitstr);
891 PL_splitstr = NULL;
892 }
893
8ebc5c01 894 /* switches */
3280af22
NIS
895 PL_preprocess = FALSE;
896 PL_minus_n = FALSE;
897 PL_minus_p = FALSE;
898 PL_minus_l = FALSE;
899 PL_minus_a = FALSE;
900 PL_minus_F = FALSE;
901 PL_doswitches = FALSE;
599cee73 902 PL_dowarn = G_WARN_OFF;
3280af22
NIS
903 PL_doextract = FALSE;
904 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
905 PL_unsafe = FALSE;
906
907 Safefree(PL_inplace);
bd61b366 908 PL_inplace = NULL;
a7cb1f99 909 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01
PP
914 }
915
bf9cdc68
RG
916 PL_perldb = 0;
917
8ebc5c01
PP
918 /* magical thingies */
919
7889fe52 920 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 921 PL_ofs_sv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS
933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01
PP
936 /* defgv, aka *_ should be taken care of elsewhere */
937
8ebc5c01 938 /* clean up after study() */
3280af22 939 SvREFCNT_dec(PL_lastscream);
a0714e2c 940 PL_lastscream = NULL;
3280af22
NIS
941 Safefree(PL_screamfirst);
942 PL_screamfirst = 0;
943 Safefree(PL_screamnext);
944 PL_screamnext = 0;
8ebc5c01 945
7d5ea4e7
GS
946 /* float buffer */
947 Safefree(PL_efloatbuf);
bd61b366 948 PL_efloatbuf = NULL;
7d5ea4e7
GS
949 PL_efloatsize = 0;
950
8ebc5c01 951 /* startup and shutdown function lists */
3280af22 952 SvREFCNT_dec(PL_beginav);
5a837c8f 953 SvREFCNT_dec(PL_beginav_save);
3280af22 954 SvREFCNT_dec(PL_endav);
7d30b5c4 955 SvREFCNT_dec(PL_checkav);
ece599bd 956 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
957 SvREFCNT_dec(PL_unitcheckav);
958 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 959 SvREFCNT_dec(PL_initav);
7d49f689
NC
960 PL_beginav = NULL;
961 PL_beginav_save = NULL;
962 PL_endav = NULL;
963 PL_checkav = NULL;
964 PL_checkav_save = NULL;
3c10abe3
AG
965 PL_unitcheckav = NULL;
966 PL_unitcheckav_save = NULL;
7d49f689 967 PL_initav = NULL;
5618dfe8 968
8ebc5c01 969 /* shortcuts just get cleared */
a0714e2c
SS
970 PL_envgv = NULL;
971 PL_incgv = NULL;
972 PL_hintgv = NULL;
973 PL_errgv = NULL;
974 PL_argvgv = NULL;
975 PL_argvoutgv = NULL;
976 PL_stdingv = NULL;
977 PL_stderrgv = NULL;
978 PL_last_in_gv = NULL;
979 PL_replgv = NULL;
980 PL_DBgv = NULL;
981 PL_DBline = NULL;
982 PL_DBsub = NULL;
983 PL_DBsingle = NULL;
984 PL_DBtrace = NULL;
985 PL_DBsignal = NULL;
986 PL_DBassertion = NULL;
601f1833 987 PL_DBcv = NULL;
7d49f689 988 PL_dbargs = NULL;
5c284bb0 989 PL_debstash = NULL;
8ebc5c01 990
7a1c5554 991 SvREFCNT_dec(PL_argvout_stack);
7d49f689 992 PL_argvout_stack = NULL;
8ebc5c01 993
5c831c24 994 SvREFCNT_dec(PL_modglobal);
5c284bb0 995 PL_modglobal = NULL;
5c831c24 996 SvREFCNT_dec(PL_preambleav);
7d49f689 997 PL_preambleav = NULL;
5c831c24 998 SvREFCNT_dec(PL_subname);
a0714e2c 999 PL_subname = NULL;
5c831c24 1000 SvREFCNT_dec(PL_linestr);
a0714e2c 1001 PL_linestr = NULL;
ca0c25f6 1002#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1003 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1004 PL_pidstatus = NULL;
ca0c25f6 1005#endif
5c831c24 1006 SvREFCNT_dec(PL_toptarget);
a0714e2c 1007 PL_toptarget = NULL;
5c831c24 1008 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1009 PL_bodytarget = NULL;
1010 PL_formtarget = NULL;
5c831c24 1011
d33b2eba 1012 /* free locale stuff */
b9582b6a 1013#ifdef USE_LOCALE_COLLATE
d33b2eba 1014 Safefree(PL_collation_name);
bd61b366 1015 PL_collation_name = NULL;
b9582b6a 1016#endif
d33b2eba 1017
b9582b6a 1018#ifdef USE_LOCALE_NUMERIC
d33b2eba 1019 Safefree(PL_numeric_name);
bd61b366 1020 PL_numeric_name = NULL;
a453c169 1021 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1022 PL_numeric_radix_sv = NULL;
b9582b6a 1023#endif
d33b2eba 1024
5c831c24
GS
1025 /* clear utf8 character classes */
1026 SvREFCNT_dec(PL_utf8_alnum);
1027 SvREFCNT_dec(PL_utf8_alnumc);
1028 SvREFCNT_dec(PL_utf8_ascii);
1029 SvREFCNT_dec(PL_utf8_alpha);
1030 SvREFCNT_dec(PL_utf8_space);
1031 SvREFCNT_dec(PL_utf8_cntrl);
1032 SvREFCNT_dec(PL_utf8_graph);
1033 SvREFCNT_dec(PL_utf8_digit);
1034 SvREFCNT_dec(PL_utf8_upper);
1035 SvREFCNT_dec(PL_utf8_lower);
1036 SvREFCNT_dec(PL_utf8_print);
1037 SvREFCNT_dec(PL_utf8_punct);
1038 SvREFCNT_dec(PL_utf8_xdigit);
1039 SvREFCNT_dec(PL_utf8_mark);
1040 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1041 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1042 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1043 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1044 SvREFCNT_dec(PL_utf8_idstart);
1045 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1046 PL_utf8_alnum = NULL;
1047 PL_utf8_alnumc = NULL;
1048 PL_utf8_ascii = NULL;
1049 PL_utf8_alpha = NULL;
1050 PL_utf8_space = NULL;
1051 PL_utf8_cntrl = NULL;
1052 PL_utf8_graph = NULL;
1053 PL_utf8_digit = NULL;
1054 PL_utf8_upper = NULL;
1055 PL_utf8_lower = NULL;
1056 PL_utf8_print = NULL;
1057 PL_utf8_punct = NULL;
1058 PL_utf8_xdigit = NULL;
1059 PL_utf8_mark = NULL;
1060 PL_utf8_toupper = NULL;
1061 PL_utf8_totitle = NULL;
1062 PL_utf8_tolower = NULL;
1063 PL_utf8_tofold = NULL;
1064 PL_utf8_idstart = NULL;
1065 PL_utf8_idcont = NULL;
5c831c24 1066
971a9dd3 1067 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1068 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1069 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1070 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1071 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1072 CopFILE_free(&PL_compiling);
1073 CopSTASH_free(&PL_compiling);
5c831c24 1074
a0d0e21e 1075 /* Prepare to destruct main symbol table. */
5f05dabc 1076
3280af22
NIS
1077 hv = PL_defstash;
1078 PL_defstash = 0;
a0d0e21e 1079 SvREFCNT_dec(hv);
5c831c24 1080 SvREFCNT_dec(PL_curstname);
a0714e2c 1081 PL_curstname = NULL;
a0d0e21e 1082
5a844595
GS
1083 /* clear queued errors */
1084 SvREFCNT_dec(PL_errors);
a0714e2c 1085 PL_errors = NULL;
5a844595 1086
a0d0e21e 1087 FREETMPS;
0453d815 1088 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1089 if (PL_scopestack_ix != 0)
9014280d 1090 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1091 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1092 (long)PL_scopestack_ix);
1093 if (PL_savestack_ix != 0)
9014280d 1094 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1095 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1096 (long)PL_savestack_ix);
1097 if (PL_tmps_floor != -1)
9014280d 1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1099 (long)PL_tmps_floor + 1);
a0d0e21e 1100 if (cxstack_ix != -1)
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1102 (long)cxstack_ix + 1);
a0d0e21e 1103 }
8990e307
LW
1104
1105 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1106 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1107 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1108
1109 /* the 2 is for PL_fdpid and PL_strtab */
1110 while (PL_sv_count > 2 && sv_clean_all())
1111 ;
1112
d33b2eba
GS
1113 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1114 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1115 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1116 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1117
d4777f27
GS
1118 AvREAL_off(PL_fdpid); /* no surviving entries */
1119 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1120 PL_fdpid = NULL;
d33b2eba 1121
6c644e78
GS
1122#ifdef HAVE_INTERP_INTERN
1123 sys_intern_clear();
1124#endif
1125
6e72f9df
PP
1126 /* Destruct the global string table. */
1127 {
1128 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1129 * so that sv_free() won't fail on them.
80459961
NC
1130 * Now that the global string table is using a single hunk of memory
1131 * for both HE and HEK, we either need to explicitly unshare it the
1132 * correct way, or actually free things here.
6e72f9df 1133 */
80459961
NC
1134 I32 riter = 0;
1135 const I32 max = HvMAX(PL_strtab);
c4420975 1136 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1137 HE *hent = array[0];
1138
6e72f9df 1139 for (;;) {
0453d815 1140 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1141 HE * const next = HeNEXT(hent);
9014280d 1142 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1143 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1144 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1145 Safefree(hent);
1146 hent = next;
6e72f9df
PP
1147 }
1148 if (!hent) {
1149 if (++riter > max)
1150 break;
1151 hent = array[riter];
1152 }
1153 }
80459961
NC
1154
1155 Safefree(array);
1156 HvARRAY(PL_strtab) = 0;
1157 HvTOTALKEYS(PL_strtab) = 0;
1158 HvFILL(PL_strtab) = 0;
6e72f9df 1159 }
3280af22 1160 SvREFCNT_dec(PL_strtab);
6e72f9df 1161
e652bb2f 1162#ifdef USE_ITHREADS
c21d1a0f 1163 /* free the pointer tables used for cloning */
a0739874 1164 ptr_table_free(PL_ptr_table);
bf9cdc68 1165 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1166#endif
a0739874 1167
d33b2eba
GS
1168 /* free special SVs */
1169
1170 SvREFCNT(&PL_sv_yes) = 0;
1171 sv_clear(&PL_sv_yes);
1172 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1173 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1174
1175 SvREFCNT(&PL_sv_no) = 0;
1176 sv_clear(&PL_sv_no);
1177 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1178 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1179
9f375a43
DM
1180 {
1181 int i;
1182 for (i=0; i<=2; i++) {
1183 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1184 sv_clear(PERL_DEBUG_PAD(i));
1185 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1186 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1187 }
1188 }
1189
0453d815 1190 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1191 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1192
eba0f806
DM
1193#ifdef DEBUG_LEAKING_SCALARS
1194 if (PL_sv_count != 0) {
1195 SV* sva;
1196 SV* sv;
1197 register SV* svend;
1198
1199 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1200 svend = &sva[SvREFCNT(sva)];
1201 for (sv = sva + 1; sv < svend; ++sv) {
1202 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1203 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1204 " flags=0x%"UVxf
fd0854ff
DM
1205 " refcnt=%"UVuf pTHX__FORMAT "\n"
1206 "\tallocated at %s:%d %s %s%s\n",
6c9570dc 1207 (void*)sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
fd0854ff
DM
1208 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1209 sv->sv_debug_line,
1210 sv->sv_debug_inpad ? "for" : "by",
1211 sv->sv_debug_optype ?
1212 PL_op_name[sv->sv_debug_optype]: "(none)",
1213 sv->sv_debug_cloned ? " (cloned)" : ""
1214 );
2aa47728 1215#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1216 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1217#endif
eba0f806
DM
1218 }
1219 }
1220 }
1221 }
2aa47728
NC
1222#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1223 {
1224 int status;
1225 fd_set rset;
1226 /* Wait for up to 4 seconds for child to terminate.
1227 This seems to be the least effort way of timing out on reaping
1228 its exit status. */
1229 struct timeval waitfor = {4, 0};
41e4abd8 1230 int sock = PL_dumper_fd;
2aa47728
NC
1231
1232 shutdown(sock, 1);
1233 FD_ZERO(&rset);
1234 FD_SET(sock, &rset);
1235 select(sock + 1, &rset, NULL, NULL, &waitfor);
1236 waitpid(child, &status, WNOHANG);
1237 close(sock);
1238 }
1239#endif
eba0f806 1240#endif
bf9cdc68 1241 PL_sv_count = 0;
eba0f806
DM
1242
1243
56a2bab7 1244#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1245 /* No more IO - including error messages ! */
1246 PerlIO_cleanup(aTHX);
1247#endif
1248
9f4bd222 1249 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1250 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1251 for no arg - and will try and SvREFCNT_dec it.
1252 */
1253 SvREFCNT(&PL_sv_undef) = 0;
1254 SvREADONLY_off(&PL_sv_undef);
1255
3280af22 1256 Safefree(PL_origfilename);
bd61b366 1257 PL_origfilename = NULL;
3280af22 1258 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1259 PL_reg_start_tmp = (char**)NULL;
1260 PL_reg_start_tmpl = 0;
43c5f42d 1261 Safefree(PL_reg_curpm);
82ba1be6 1262 Safefree(PL_reg_poscache);
dd28f7bb 1263 free_tied_hv_pool();
3280af22 1264 Safefree(PL_op_mask);
cf36064f 1265 Safefree(PL_psig_ptr);
bf9cdc68 1266 PL_psig_ptr = (SV**)NULL;
cf36064f 1267 Safefree(PL_psig_name);
bf9cdc68 1268 PL_psig_name = (SV**)NULL;
2c2666fc 1269 Safefree(PL_bitcount);
bd61b366 1270 PL_bitcount = NULL;
ce08f86c 1271 Safefree(PL_psig_pend);
bf9cdc68 1272 PL_psig_pend = (int*)NULL;
a0714e2c 1273 PL_formfeed = NULL;
6e72f9df 1274 nuke_stacks();
bf9cdc68
RG
1275 PL_tainting = FALSE;
1276 PL_taint_warn = FALSE;
3280af22 1277 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1278 PL_debug = 0;
ac27b0f5 1279
a0d0e21e 1280 DEBUG_P(debprofdump());
d33b2eba 1281
e5dd39fc 1282#ifdef USE_REENTRANT_API
10bc17b6 1283 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1284#endif
1285
612f20c3
GS
1286 sv_free_arenas();
1287
5d9a96ca
DM
1288 while (PL_regmatch_slab) {
1289 regmatch_slab *s = PL_regmatch_slab;
1290 PL_regmatch_slab = PL_regmatch_slab->next;
1291 Safefree(s);
1292 }
1293
fc36a67e
PP
1294 /* As the absolutely last thing, free the non-arena SV for mess() */
1295
3280af22 1296 if (PL_mess_sv) {
f350b448
NC
1297 /* we know that type == SVt_PVMG */
1298
9c63abab 1299 /* it could have accumulated taint magic */
f350b448
NC
1300 MAGIC* mg;
1301 MAGIC* moremagic;
1302 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1303 moremagic = mg->mg_moremagic;
1304 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1305 && mg->mg_len >= 0)
1306 Safefree(mg->mg_ptr);
1307 Safefree(mg);
9c63abab 1308 }
f350b448 1309
fc36a67e 1310 /* we know that type >= SVt_PV */
8bd4d4c5 1311 SvPV_free(PL_mess_sv);
3280af22
NIS
1312 Safefree(SvANY(PL_mess_sv));
1313 Safefree(PL_mess_sv);
a0714e2c 1314 PL_mess_sv = NULL;
fc36a67e 1315 }
37038d91 1316 return STATUS_EXIT;
79072805
LW
1317}
1318
954c1994
GS
1319/*
1320=for apidoc perl_free
1321
1322Releases a Perl interpreter. See L<perlembed>.
1323
1324=cut
1325*/
1326
79072805 1327void
0cb96387 1328perl_free(pTHXx)
79072805 1329{
5174512c
NC
1330 dVAR;
1331
c301d606
DM
1332 if (PL_veto_cleanup)
1333 return;
1334
7cb608b5 1335#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1336 {
1337 /*
1338 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1339 * value as we're probably hunting memory leaks then
1340 */
1341 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1342 if (!s || atoi(s) == 0) {
1343 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1344 thread at thread exit. */
1345 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1346 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1347 }
1348 }
7cb608b5
NC
1349#endif
1350
acfe0abc 1351#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1352# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1353 {
acfe0abc 1354# ifdef NETWARE
7af12a34 1355 void *host = nw_internal_host;
acfe0abc 1356# else
7af12a34 1357 void *host = w32_internal_host;
acfe0abc 1358# endif
7af12a34 1359 PerlMem_free(aTHXx);
acfe0abc 1360# ifdef NETWARE
7af12a34 1361 nw_delete_internal_host(host);
acfe0abc 1362# else
7af12a34 1363 win32_delete_internal_host(host);
acfe0abc 1364# endif
7af12a34 1365 }
1c0ca838
GS
1366# else
1367 PerlMem_free(aTHXx);
1368# endif
acfe0abc
GS
1369#else
1370 PerlMem_free(aTHXx);
76e3520e 1371#endif
79072805
LW
1372}
1373
b7f7fff6 1374#if defined(USE_ITHREADS)
aebd1ac7
GA
1375/* provide destructors to clean up the thread key when libperl is unloaded */
1376#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1377
826955bd 1378#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1379#pragma fini "perl_fini"
666ad1ec
GA
1380#elif defined(__sun) && !defined(__GNUC__)
1381#pragma fini (perl_fini)
aebd1ac7
GA
1382#endif
1383
0dbb1585
AL
1384static void
1385#if defined(__GNUC__)
1386__attribute__((destructor))
aebd1ac7 1387#endif
de009b76 1388perl_fini(void)
aebd1ac7 1389{
27da23d5 1390 dVAR;
c301d606 1391 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1392 FREE_THREAD_KEY;
1393}
1394
1395#endif /* WIN32 */
1396#endif /* THREADS */
1397
4b556e6c 1398void
864dbfa3 1399Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1400{
97aff369 1401 dVAR;
3280af22
NIS
1402 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1403 PL_exitlist[PL_exitlistlen].fn = fn;
1404 PL_exitlist[PL_exitlistlen].ptr = ptr;
1405 ++PL_exitlistlen;
4b556e6c
JD
1406}
1407
56cf6df8
RGS
1408#ifdef HAS_PROCSELFEXE
1409/* This is a function so that we don't hold on to MAXPATHLEN
1410 bytes of stack longer than necessary
1411 */
1412STATIC void
e1ec3a88 1413S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1414{
1415 char buf[MAXPATHLEN];
1416 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1417
1418 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1419 includes a spurious NUL which will cause $^X to fail in system
1420 or backticks (this will prevent extensions from being built and
1421 many tests from working). readlink is not meant to add a NUL.
1422 Normal readlink works fine.
1423 */
1424 if (len > 0 && buf[len-1] == '\0') {
1425 len--;
1426 }
1427
1428 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1429 returning the text "unknown" from the readlink rather than the path
1430 to the executable (or returning an error from the readlink). Any valid
1431 path has a '/' in it somewhere, so use that to validate the result.
1432 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1433 */
1434 if (len > 0 && memchr(buf, '/', len)) {
1435 sv_setpvn(sv,buf,len);
1436 }
1437 else {
1438 sv_setpv(sv,arg0);
1439 }
1440}
1441#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1442
1443STATIC void
1444S_set_caret_X(pTHX) {
97aff369 1445 dVAR;
fafc274c 1446 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1447 if (tmpgv) {
1448#ifdef HAS_PROCSELFEXE
1449 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1450#else
1451#ifdef OS2
c69033f2 1452 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1453#else
c69033f2 1454 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1455#endif
1456#endif
1457 }
1458}
1459
954c1994
GS
1460/*
1461=for apidoc perl_parse
1462
1463Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1464
1465=cut
1466*/
1467
79072805 1468int
0cb96387 1469perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1470{
27da23d5 1471 dVAR;
6224f72b 1472 I32 oldscope;
6224f72b 1473 int ret;
db36c5a1 1474 dJMPENV;
8d063cd8 1475
ed6c66dd 1476 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 1477
a687059c
LW
1478#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1479#ifdef IAMSUID
1480#undef IAMSUID
cea2e8a9 1481 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1482setuid perl scripts securely.\n");
ae3f3efd 1483#endif /* IAMSUID */
a687059c
LW
1484#endif
1485
b0891165
JH
1486#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1487 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1488 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1489 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1490 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1491 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1492 if (!PL_rehash_seed_set)
1493 PL_rehash_seed = get_hash_seed();
b0891165 1494 {
9d4ba2ae 1495 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1496
1b6737cc
AL
1497 if (s && (atoi(s) == 1))
1498 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1499 }
1500#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1501
3280af22 1502 PL_origargc = argc;
e2975953 1503 PL_origargv = argv;
a0d0e21e 1504
a2722ac9
GA
1505 if (PL_origalen != 0) {
1506 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1507 }
1508 else {
3cb9023d
JH
1509 /* Set PL_origalen be the sum of the contiguous argv[]
1510 * elements plus the size of the env in case that it is
e9137a8e 1511 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1512 * as the maximum modifiable length of $0. In the worst case
1513 * the area we are able to modify is limited to the size of
43c32782 1514 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1515 * --jhi */
e1ec3a88 1516 const char *s = NULL;
54bfe034 1517 int i;
1b6737cc 1518 const UV mask =
7d8e7db3 1519 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1520 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1521 const UV aligned =
43c32782
JH
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 while (*s) s++;
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
43c32782 1537#ifdef OS2
c8941eeb 1538 || PL_origargv[i] == s + 2
43c32782 1539#endif
c8941eeb
JH
1540 )
1541 ||
1542 (aligned &&
1543 (PL_origargv[i] > s &&
1544 PL_origargv[i] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
1548 s = PL_origargv[i];
1549 while (*s) s++;
1550 }
1551 else
1552 break;
54bfe034 1553 }
54bfe034 1554 }
a4a109c2
JD
1555
1556#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1557 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1559 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1560 ||
1561 (aligned &&
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
9d419b5f 1567#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1568 s = PL_origenviron[0];
1569 while (*s) s++;
1570#endif
bd61b366 1571 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1575 ||
1576 (aligned &&
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 )
1581 {
1582 s = PL_origenviron[i];
1583 while (*s) s++;
1584 }
1585 else
1586 break;
54bfe034 1587 }
43c32782 1588 }
54bfe034 1589 }
a4a109c2
JD
1590#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW
1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
b7975bdd
NC
1603 assert (!PL_tainted);
1604 TAINT;
1605 S_set_caret_X(aTHX);
1606 TAINT_NOT;
a0d0e21e
LW
1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS
1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
3c10abe3
AG
1627 if (PL_unitcheckav)
1628 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1629 if (PL_checkav)
1630 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1631 ret = 0;
1632 break;
6224f72b
GS
1633 case 1:
1634 STATUS_ALL_FAILURE;
1635 /* FALL THROUGH */
1636 case 2:
1637 /* my_exit() was called */
3280af22 1638 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1639 LEAVE;
1640 FREETMPS;
3280af22 1641 PL_curstash = PL_defstash;
3c10abe3
AG
1642 if (PL_unitcheckav)
1643 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1644 if (PL_checkav)
1645 call_list(oldscope, PL_checkav);
37038d91 1646 ret = STATUS_EXIT;
14dd3ad8 1647 break;
6224f72b 1648 case 3:
bf49b057 1649 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1650 ret = 1;
1651 break;
6224f72b 1652 }
14dd3ad8
GS
1653 JMPENV_POP;
1654 return ret;
1655}
1656
312caa8e 1657STATIC void *
14dd3ad8 1658S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1659{
27da23d5 1660 dVAR;
312caa8e 1661 int argc = PL_origargc;
8f42b153 1662 char **argv = PL_origargv;
e1ec3a88 1663 const char *scriptname = NULL;
312caa8e 1664 VOL bool dosearch = FALSE;
e1ec3a88 1665 const char *validarg = "";
312caa8e 1666 register SV *sv;
47f56822 1667 register char *s, c;
bd61b366 1668 const char *cddir = NULL;
ab019eaa 1669#ifdef USE_SITECUSTOMIZE
20ef40cf 1670 bool minus_f = FALSE;
ab019eaa 1671#endif
312caa8e 1672
3280af22 1673 sv_setpvn(PL_linestr,"",0);
396482e1 1674 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1675 SAVEFREESV(sv);
1676 init_main_stash();
54310121 1677
6224f72b
GS
1678 for (argc--,argv++; argc > 0; argc--,argv++) {
1679 if (argv[0][0] != '-' || !argv[0][1])
1680 break;
1681#ifdef DOSUID
1682 if (*validarg)
1683 validarg = " PHOOEY ";
1684 else
1685 validarg = argv[0];
ae3f3efd
PS
1686 /*
1687 * Can we rely on the kernel to start scripts with argv[1] set to
1688 * contain all #! line switches (the whole line)? (argv[0] is set to
1689 * the interpreter name, argv[2] to the script name; argv[3] and
1690 * above may contain other arguments.)
1691 */
13281fa4 1692#endif
6224f72b
GS
1693 s = argv[0]+1;
1694 reswitch:
47f56822 1695 switch ((c = *s)) {
729a02f2 1696 case 'C':
1d5472a9
GS
1697#ifndef PERL_STRICT_CR
1698 case '\r':
1699#endif
6224f72b
GS
1700 case ' ':
1701 case '0':
1702 case 'F':
1703 case 'a':
1704 case 'c':
1705 case 'd':
1706 case 'D':
1707 case 'h':
1708 case 'i':
1709 case 'l':
1710 case 'M':
1711 case 'm':
1712 case 'n':
1713 case 'p':
1714 case 's':
1715 case 'u':
1716 case 'U':
1717 case 'v':
599cee73
PM
1718 case 'W':
1719 case 'X':
6224f72b 1720 case 'w':
06492da6 1721 case 'A':
97bd5664 1722 if ((s = moreswitches(s)))
6224f72b
GS
1723 goto reswitch;
1724 break;
33b78306 1725
1dbad523 1726 case 't':
22f7c9c9 1727 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1728 if( !PL_tainting ) {
1729 PL_taint_warn = TRUE;
1730 PL_tainting = TRUE;
1731 }
1732 s++;
1733 goto reswitch;
6224f72b 1734 case 'T':
22f7c9c9 1735 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1736 PL_tainting = TRUE;
317ea90d 1737 PL_taint_warn = FALSE;
6224f72b
GS
1738 s++;
1739 goto reswitch;
f86702cc 1740
bc9b29db
RH
1741 case 'E':
1742 PL_minus_E = TRUE;
1743 /* FALL THROUGH */
6224f72b 1744 case 'e':
bf4acbe4
GS
1745#ifdef MACOS_TRADITIONAL
1746 /* ignore -e for Dev:Pseudo argument */
1747 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1748 break;
bf4acbe4 1749#endif
a52eba0e 1750 forbid_setid('e', -1);
3280af22 1751 if (!PL_e_script) {
396482e1 1752 PL_e_script = newSVpvs("");
0cb96387 1753 filter_add(read_e_script, NULL);
6224f72b
GS
1754 }
1755 if (*++s)
3280af22 1756 sv_catpv(PL_e_script, s);
6224f72b 1757 else if (argv[1]) {
3280af22 1758 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1759 argc--,argv++;
1760 }
1761 else
47f56822 1762 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1763 sv_catpvs(PL_e_script, "\n");
6224f72b 1764 break;
afe37c7d 1765
20ef40cf 1766 case 'f':
f5542d3a 1767#ifdef USE_SITECUSTOMIZE
20ef40cf 1768 minus_f = TRUE;
f5542d3a 1769#endif
20ef40cf
GA
1770 s++;
1771 goto reswitch;
1772
6224f72b 1773 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1774 forbid_setid('I', -1);
bd61b366 1775 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1776 argc--,argv++;
1777 }
6224f72b 1778 if (s && *s) {
0df16ed7 1779 STRLEN len = strlen(s);
aec46f14 1780 const char * const p = savepvn(s, len);
88fe16b2 1781 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1782 sv_catpvs(sv, "-I");
0df16ed7 1783 sv_catpvn(sv, p, len);
396482e1 1784 sv_catpvs(sv, " ");
6224f72b 1785 Safefree(p);
0df16ed7
GS
1786 }
1787 else
a67e862a 1788 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1789 break;
1790 case 'P':
a52eba0e 1791 forbid_setid('P', -1);
3280af22 1792 PL_preprocess = TRUE;
6224f72b
GS
1793 s++;
1794 goto reswitch;
1795 case 'S':
a52eba0e 1796 forbid_setid('S', -1);
6224f72b
GS
1797 dosearch = TRUE;
1798 s++;
1799 goto reswitch;
1800 case 'V':
7edfd0ef
NC
1801 {
1802 SV *opts_prog;
1803
29a861e7 1804 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef
NC
1805 if (*++s != ':') {
1806 STRLEN opts;
1807
396482e1 1808 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1809#ifdef VMS
396482e1 1810 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1811#else
396482e1 1812 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1813#endif
7edfd0ef 1814 opts = SvCUR(opts_prog);
efcaa95b 1815
9cd7d3f2 1816 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1817# ifdef DEBUGGING
e2e4dbf1 1818 " DEBUGGING"
6224f72b 1819# endif
4f185743
NC
1820# ifdef DEBUG_LEAKING_SCALARS
1821 " DEBUG_LEAKING_SCALARS"
1822# endif
85e1fcb9 1823# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1824 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1825# endif
1826# ifdef FAKE_THREADS
e2e4dbf1 1827 " FAKE_THREADS"
85e1fcb9 1828# endif
6224f72b 1829# ifdef MULTIPLICITY
e2e4dbf1 1830 " MULTIPLICITY"
6224f72b 1831# endif
85e1fcb9 1832# ifdef MYMALLOC
e2e4dbf1 1833 " MYMALLOC"
85e1fcb9 1834# endif
3bcf5ed8
SP
1835# ifdef NO_MATHOMS
1836 " NO_MATHOMS"
1837# endif
85e1fcb9 1838# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1839 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1840# endif
1841# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1842 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1843# endif
1844# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1845 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1846# endif
1847# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1848 " PERL_IMPLICIT_SYS"
85e1fcb9 1849# endif
a724edfe
NC
1850# ifdef PERL_MAD
1851 " PERL_MAD"
1852# endif
85e1fcb9 1853# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1854 " PERL_MALLOC_WRAP"
85e1fcb9 1855# endif
4724db38
NC
1856# ifdef PERL_MEM_LOG
1857 " PERL_MEM_LOG"
1858# endif
1859# ifdef PERL_MEM_LOG_ENV
1860 " PERL_MEM_LOG_ENV"
1861# endif
1862# ifdef PERL_MEM_LOG_ENV_FD
1863 " PERL_MEM_LOG_ENV_FD"
1864# endif
1865# ifdef PERL_MEM_LOG_STDERR
1866 " PERL_MEM_LOG_STDERR"
1867# endif
1868# ifdef PERL_MEM_LOG_TIMESTAMP
1869 " PERL_MEM_LOG_TIMESTAMP"
1870# endif
85e1fcb9 1871# ifdef PERL_NEED_APPCTX
e2e4dbf1 1872 " PERL_NEED_APPCTX"
85e1fcb9
SH
1873# endif
1874# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1875 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1876# endif
1877# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1878 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1879# endif
4724db38
NC
1880# ifdef PERL_POISON
1881 " PERL_POISON"
1882# endif
9c0a4d5d
DM
1883# ifdef PERL_TRACK_MEMPOOL
1884 " PERL_TRACK_MEMPOOL"
1885# endif
417cd4a8
SP
1886# ifdef PERL_USE_SAFE_PUTENV
1887 " PERL_USE_SAFE_PUTENV"
1888# endif
4724db38 1889# ifdef PERL_USES_PL_PIDSTATUS
ca0c25f6 1890 " PERL_USES_PL_PIDSTATUS"
4724db38 1891# endif
85e1fcb9 1892# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1893 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1894# endif
1895# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1896 " THREADS_HAVE_PIDS"
85e1fcb9 1897# endif
85e1fcb9 1898# ifdef USE_64_BIT_ALL
e2e4dbf1 1899 " USE_64_BIT_ALL"
ac5e8965 1900# endif
10cc9d2a 1901# ifdef USE_64_BIT_INT
e2e4dbf1 1902 " USE_64_BIT_INT"
10cc9d2a 1903# endif
85e1fcb9 1904# ifdef USE_ITHREADS
e2e4dbf1 1905 " USE_ITHREADS"
85e1fcb9
SH
1906# endif
1907# ifdef USE_LARGE_FILES
e2e4dbf1 1908 " USE_LARGE_FILES"
ac5e8965
JH
1909# endif
1910# ifdef USE_LONG_DOUBLE
e2e4dbf1 1911 " USE_LONG_DOUBLE"
ac5e8965 1912# endif
85e1fcb9 1913# ifdef USE_PERLIO
e2e4dbf1 1914 " USE_PERLIO"
53430762 1915# endif
85e1fcb9 1916# ifdef USE_REENTRANT_API
e2e4dbf1 1917 " USE_REENTRANT_API"
85e1fcb9
SH
1918# endif
1919# ifdef USE_SFIO
e2e4dbf1 1920 " USE_SFIO"
ac5e8965 1921# endif
20ef40cf 1922# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1923 " USE_SITECUSTOMIZE"
20ef40cf 1924# endif
85e1fcb9 1925# ifdef USE_SOCKS
e2e4dbf1 1926 " USE_SOCKS"
b363f7ed 1927# endif
e2e4dbf1 1928 );
efcaa95b 1929
7edfd0ef
NC
1930 while (SvCUR(opts_prog) > opts+76) {
1931 /* find last space after "options: " and before col 76
1932 */
efcaa95b 1933
7edfd0ef 1934 const char *space;
c4420975 1935 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1936 const char c = pv[opts+76];
1937 pv[opts+76] = '\0';
1938 space = strrchr(pv+opts+26, ' ');
1939 pv[opts+76] = c;
1940 if (!space) break; /* "Can't happen" */
efcaa95b 1941
7edfd0ef 1942 /* break the line before that space */
efcaa95b 1943
7edfd0ef 1944 opts = space - pv;
89529cee 1945 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1946 STR_WITH_LEN("\\n "));
7edfd0ef 1947 }
efcaa95b 1948
396482e1 1949 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1950
6224f72b 1951#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1952 if (LOCAL_PATCH_COUNT > 0) {
1953 int i;
396482e1 1954 sv_catpvs(opts_prog,
7edfd0ef
NC
1955 "\" Locally applied patches:\\n\",");
1956 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1957 if (PL_localpatches[i])
1958 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1959 0, PL_localpatches[i], 0);
1960 }
6224f72b 1961 }
6224f72b 1962#endif
7edfd0ef
NC
1963 Perl_sv_catpvf(aTHX_ opts_prog,
1964 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1965#ifdef __DATE__
1966# ifdef __TIME__
7edfd0ef
NC
1967 Perl_sv_catpvf(aTHX_ opts_prog,
1968 ",\" Compiled at %s %s\\n\"",__DATE__,
1969 __TIME__);
6224f72b 1970# else
7edfd0ef
NC
1971 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1972 __DATE__);
6224f72b
GS
1973# endif
1974#endif
396482e1 1975 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1976 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1977 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1978#ifdef __CYGWIN__
396482e1 1979 sv_catpvs(opts_prog,
7edfd0ef 1980 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1981#endif
396482e1 1982 sv_catpvs(opts_prog,
7edfd0ef
NC
1983 "print \" \\%ENV:\\n @env\\n\" if @env;"
1984 "print \" \\@INC:\\n @INC\\n\";");
1985 }
1986 else {
1987 ++s;
1988 opts_prog = Perl_newSVpvf(aTHX_
1989 "Config::config_vars(qw%c%s%c)",
1990 0, s, 0);
1991 s += strlen(s);
1992 }
1993 av_push(PL_preambleav, opts_prog);
1994 /* don't look for script or read stdin */
1995 scriptname = BIT_BUCKET;
1996 goto reswitch;
6224f72b 1997 }
6224f72b 1998 case 'x':
3280af22 1999 PL_doextract = TRUE;
6224f72b
GS
2000 s++;
2001 if (*s)
f4c556ac 2002 cddir = s;
6224f72b
GS
2003 break;
2004 case 0:
2005 break;
2006 case '-':
2007 if (!*++s || isSPACE(*s)) {
2008 argc--,argv++;
2009 goto switch_end;
2010 }
2011 /* catch use of gnu style long options */
2012 if (strEQ(s, "version")) {
dd374669 2013 s = (char *)"v";
6224f72b
GS
2014 goto reswitch;
2015 }
2016 if (strEQ(s, "help")) {
dd374669 2017 s = (char *)"h";
6224f72b
GS
2018 goto reswitch;
2019 }
2020 s--;
2021 /* FALL THROUGH */
2022 default:
cea2e8a9 2023 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2024 }
2025 }
6224f72b 2026 switch_end:
54310121 2027
f675dbe5
CB
2028 if (
2029#ifndef SECURE_INTERNAL_GETENV
2030 !PL_tainting &&
2031#endif
cf756827 2032 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2033 {
e1ec3a88 2034 const char *popt = s;
74288ac8
GS
2035 while (isSPACE(*s))
2036 s++;
317ea90d 2037 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 2038 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 2039 PL_tainting = TRUE;
317ea90d
MS
2040 PL_taint_warn = FALSE;
2041 }
74288ac8 2042 else {
bd61b366 2043 char *popt_copy = NULL;
74288ac8 2044 while (s && *s) {
4ea8f8fb 2045 char *d;
74288ac8
GS
2046 while (isSPACE(*s))
2047 s++;
2048 if (*s == '-') {
2049 s++;
2050 if (isSPACE(*s))
2051 continue;
2052 }
4ea8f8fb 2053 d = s;
74288ac8
GS
2054 if (!*s)
2055 break;
e4af53b0 2056 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 2057 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2058 while (++s && *s) {
2059 if (isSPACE(*s)) {
cf756827
GS
2060 if (!popt_copy) {
2061 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
2062 s = popt_copy + (s - popt);
2063 d = popt_copy + (d - popt);
2064 }
4ea8f8fb
MS
2065 *s++ = '\0';
2066 break;
2067 }
2068 }
1c4db469 2069 if (*d == 't') {
317ea90d
MS
2070 if( !PL_tainting ) {
2071 PL_taint_warn = TRUE;
2072 PL_tainting = TRUE;
2073 }
1c4db469 2074 } else {
97bd5664 2075 moreswitches(d);
1c4db469 2076 }
6224f72b 2077 }
6224f72b
GS
2078 }
2079 }
a0d0e21e 2080
20ef40cf
GA
2081#ifdef USE_SITECUSTOMIZE
2082 if (!minus_f) {
29a861e7
NC
2083 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2084 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
2085 }
2086#endif
2087
6224f72b
GS
2088 if (!scriptname)
2089 scriptname = argv[0];
3280af22 2090 if (PL_e_script) {
6224f72b
GS
2091 argc++,argv--;
2092 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2093 }
bd61b366 2094 else if (scriptname == NULL) {
6224f72b
GS
2095#ifdef MSDOS
2096 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2097 moreswitches("h");
6224f72b
GS
2098#endif
2099 scriptname = "-";
2100 }
2101
b7975bdd
NC
2102 /* Set $^X early so that it can be used for relocatable paths in @INC */
2103 assert (!PL_tainted);
2104 TAINT;
2105 S_set_caret_X(aTHX);
2106 TAINT_NOT;
6224f72b
GS
2107 init_perllib();
2108
a52eba0e
NC
2109 {
2110 int suidscript;
2111 const int fdscript
2112 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2113
a52eba0e 2114 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2115
64ca3a65 2116#ifndef PERL_MICRO
a52eba0e
NC
2117# if defined(SIGCHLD) || defined(SIGCLD)
2118 {
2119# ifndef SIGCHLD
2120# define SIGCHLD SIGCLD
2121# endif
2122 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2123 if (sigstate == (Sighandler_t) SIG_IGN) {
2124 if (ckWARN(WARN_SIGNAL))
2125 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2126 "Can't ignore signal CHLD, forcing to default");
2127 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2128 }
0b5b802d 2129 }
a52eba0e 2130# endif
64ca3a65 2131#endif
0b5b802d 2132
a52eba0e 2133 if (PL_doextract
bf4acbe4 2134#ifdef MACOS_TRADITIONAL
a52eba0e 2135 || gMacPerl_AlwaysExtract
bf4acbe4 2136#endif
a52eba0e 2137 ) {
faef540c
NC
2138
2139 /* This will croak if suidscript is >= 0, as -x cannot be used with
2140 setuid scripts. */
2141 forbid_setid('x', suidscript);
2142 /* Hence you can't get here if suidscript >= 0 */
2143
2144 find_beginning();
a52eba0e
NC
2145 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2146 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2147 }
f4c556ac 2148 }
6224f72b 2149
b9f83d2f 2150 PL_main_cv = PL_compcv = (CV*)newSV_type(SVt_PVCV);
3280af22
NIS
2151 CvUNIQUE_on(PL_compcv);
2152
dd2155a4 2153 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2154
0c4f7ff0 2155 boot_core_PerlIO();
6224f72b 2156 boot_core_UNIVERSAL();
09bef843 2157 boot_core_xsutils();
6224f72b
GS
2158
2159 if (xsinit)
acfe0abc 2160 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2161#ifndef PERL_MICRO
d0d72822 2162#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2163 init_os_extras();
6224f72b 2164#endif
64ca3a65 2165#endif
6224f72b 2166
29209bc5 2167#ifdef USE_SOCKS
1b9c9cf5
DH
2168# ifdef HAS_SOCKS5_INIT
2169 socks5_init(argv[0]);
2170# else
29209bc5 2171 SOCKSinit(argv[0]);
1b9c9cf5 2172# endif
ac27b0f5 2173#endif
29209bc5 2174
6224f72b
GS
2175 init_predump_symbols();
2176 /* init_postdump_symbols not currently designed to be called */
2177 /* more than once (ENV isn't cleared first, for example) */
2178 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2179 if (!PL_do_undump)
6224f72b
GS
2180 init_postdump_symbols(argc,argv,env);
2181
27da23d5
JH
2182 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2183 * or explicitly in some platforms.
085a54d9 2184 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2185 * look like the user wants to use UTF-8. */
a0fd4948 2186#if defined(__SYMBIAN32__)
27da23d5
JH
2187 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2188#endif
06e66572
JH
2189 if (PL_unicode) {
2190 /* Requires init_predump_symbols(). */
a05d7ebb 2191 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2192 IO* io;
2193 PerlIO* fp;
2194 SV* sv;
2195
a05d7ebb 2196 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2197 * and the default open disciplines. */
a05d7ebb
JH
2198 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2199 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2200 (fp = IoIFP(io)))
2201 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2202 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2203 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2204 (fp = IoOFP(io)))
2205 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2206 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2207 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2208 (fp = IoOFP(io)))
2209 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2210 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2211 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2212 SVt_PV)))) {
a05d7ebb
JH
2213 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2214 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2215 if (in) {
2216 if (out)
2217 sv_setpvn(sv, ":utf8\0:utf8", 11);
2218 else
2219 sv_setpvn(sv, ":utf8\0", 6);
2220 }
2221 else if (out)
2222 sv_setpvn(sv, "\0:utf8", 6);
2223 SvSETMAGIC(sv);
2224 }
b310b053
JH
2225 }
2226 }
2227
4ffa73a3
JH
2228 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2229 if (strEQ(s, "unsafe"))
2230 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2231 else if (strEQ(s, "safe"))
2232 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2233 else
2234 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2235 }
2236
81d86705
NC
2237#ifdef PERL_MAD
2238 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2239 PL_madskills = 1;
2240 PL_minus_c = 1;
2241 if (!s || !s[0])
2242 PL_xmlfp = PerlIO_stdout();
2243 else {
2244 PL_xmlfp = PerlIO_open(s, "w");
2245 if (!PL_xmlfp)
2246 Perl_croak(aTHX_ "Can't open %s", s);
2247 }
2248 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2249 }
2250 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2251 PL_madskills = atoi(s);
2252 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2253 }
2254#endif
2255
6224f72b
GS
2256 init_lexer();
2257
2258 /* now parse the script */
2259
93189314 2260 SETERRNO(0,SS_NORMAL);
3280af22 2261 PL_error_count = 0;
bf4acbe4
GS
2262#ifdef MACOS_TRADITIONAL
2263 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2264 if (PL_minus_c)
2265 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2266 else {
2267 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2268 MacPerl_MPWFileName(PL_origfilename));
2269 }
2270 }
2271#else
3280af22
NIS
2272 if (yyparse() || PL_error_count) {
2273 if (PL_minus_c)
cea2e8a9 2274 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2275 else {
cea2e8a9 2276 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2277 PL_origfilename);
6224f72b
GS
2278 }
2279 }
bf4acbe4 2280#endif
57843af0 2281 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2282 PL_curstash = PL_defstash;
2283 PL_preprocess = FALSE;
2284 if (PL_e_script) {
2285 SvREFCNT_dec(PL_e_script);
a0714e2c 2286 PL_e_script = NULL;
6224f72b
GS
2287 }
2288
3280af22 2289 if (PL_do_undump)
6224f72b
GS
2290 my_unexec();
2291
57843af0
GS
2292 if (isWARN_ONCE) {
2293 SAVECOPFILE(PL_curcop);
2294 SAVECOPLINE(PL_curcop);
3280af22 2295 gv_check(PL_defstash);
57843af0 2296 }
6224f72b
GS
2297
2298 LEAVE;
2299 FREETMPS;
2300
2301#ifdef MYMALLOC
2302 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2303 dump_mstats("after compilation:");
2304#endif
2305
2306 ENTER;
3280af22 2307 PL_restartop = 0;
312caa8e 2308 return NULL;
6224f72b
GS
2309}
2310
954c1994
GS
2311/*
2312=for apidoc perl_run
2313
2314Tells a Perl interpreter to run. See L<perlembed>.
2315
2316=cut
2317*/
2318
6224f72b 2319int
0cb96387 2320perl_run(pTHXx)
6224f72b 2321{
97aff369 2322 dVAR;
6224f72b 2323 I32 oldscope;
14dd3ad8 2324 int ret = 0;
db36c5a1 2325 dJMPENV;
6224f72b 2326
ed6c66dd 2327 PERL_UNUSED_ARG(my_perl);
9d4ba2ae 2328
3280af22 2329 oldscope = PL_scopestack_ix;
96e176bf
CL
2330#ifdef VMS
2331 VMSISH_HUSHED = 0;
2332#endif
6224f72b 2333
14dd3ad8 2334 JMPENV_PUSH(ret);
6224f72b
GS
2335 switch (ret) {
2336 case 1:
2337 cxstack_ix = -1; /* start context stack again */
312caa8e 2338 goto redo_body;
14dd3ad8 2339 case 0: /* normal completion */
14dd3ad8
GS
2340 redo_body:
2341 run_body(oldscope);
14dd3ad8
GS
2342 /* FALL THROUGH */
2343 case 2: /* my_exit() */
3280af22 2344 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2345 LEAVE;
2346 FREETMPS;
3280af22 2347 PL_curstash = PL_defstash;
3a1ee7e8 2348 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2349 PL_endav && !PL_minus_c)
2350 call_list(oldscope, PL_endav);
6224f72b
GS
2351#ifdef MYMALLOC
2352 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2353 dump_mstats("after execution: ");
2354#endif
37038d91 2355 ret = STATUS_EXIT;
14dd3ad8 2356 break;
6224f72b 2357 case 3:
312caa8e
CS
2358 if (PL_restartop) {
2359 POPSTACK_TO(PL_mainstack);
2360 goto redo_body;
6224f72b 2361 }
bf49b057 2362 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2363 FREETMPS;
14dd3ad8
GS
2364 ret = 1;
2365 break;
6224f72b
GS
2366 }
2367
14dd3ad8
GS
2368 JMPENV_POP;
2369 return ret;
312caa8e
CS
2370}
2371
14dd3ad8 2372
dd374669 2373STATIC void
14dd3ad8
GS
2374S_run_body(pTHX_ I32 oldscope)
2375{
97aff369 2376 dVAR;
6224f72b 2377 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2378 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2379
3280af22 2380 if (!PL_restartop) {
81d86705
NC
2381#ifdef PERL_MAD
2382 if (PL_xmlfp) {
2383 xmldump_all();
2384 exit(0); /* less likely to core dump than my_exit(0) */
2385 }
2386#endif
6224f72b 2387 DEBUG_x(dump_all());
cf2782cd 2388#ifdef DEBUGGING
ecae49c0
NC
2389 if (!DEBUG_q_TEST)
2390 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2391#endif
b900a521
JH
2392 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2393 PTR2UV(thr)));
6224f72b 2394
3280af22 2395 if (PL_minus_c) {
bf4acbe4 2396#ifdef MACOS_TRADITIONAL
e69a2255
JH
2397 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2398 (gMacPerl_ErrorFormat ? "# " : ""),
2399 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2400#else
bf49b057 2401 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2402#endif
6224f72b
GS
2403 my_exit(0);
2404 }
3280af22 2405 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2406 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2407 if (PL_initav)
2408 call_list(oldscope, PL_initav);
6224f72b
GS
2409 }
2410
2411 /* do it */
2412
3280af22 2413 if (PL_restartop) {
533c011a 2414 PL_op = PL_restartop;
3280af22 2415 PL_restartop = 0;
cea2e8a9 2416 CALLRUNOPS(aTHX);
6224f72b 2417 }
3280af22
NIS
2418 else if (PL_main_start) {
2419 CvDEPTH(PL_main_cv) = 1;
533c011a 2420 PL_op = PL_main_start;
cea2e8a9 2421 CALLRUNOPS(aTHX);
6224f72b 2422 }
f6b3007c
JH
2423 my_exit(0);
2424 /* NOTREACHED */
6224f72b
GS
2425}
2426
954c1994 2427/*
ccfc67b7
JH
2428=head1 SV Manipulation Functions
2429
954c1994
GS
2430=for apidoc p||get_sv
2431
2432Returns the SV of the specified Perl scalar. If C<create> is set and the
2433Perl variable does not exist then it will be created. If C<create> is not
2434set and the variable does not exist then NULL is returned.
2435
2436=cut
2437*/
2438
6224f72b 2439SV*
864dbfa3 2440Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2441{
2442 GV *gv;
6224f72b
GS
2443 gv = gv_fetchpv(name, create, SVt_PV);
2444 if (gv)
2445 return GvSV(gv);
a0714e2c 2446 return NULL;
6224f72b
GS
2447}
2448
954c1994 2449/*
ccfc67b7
JH
2450=head1 Array Manipulation Functions
2451
954c1994
GS
2452=for apidoc p||get_av
2453
2454Returns the AV of the specified Perl array. If C<create> is set and the
2455Perl variable does not exist then it will be created. If C<create> is not
2456set and the variable does not exist then NULL is returned.
2457
2458=cut
2459*/
2460
6224f72b 2461AV*
864dbfa3 2462Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2463{
c4420975 2464 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2465 if (create)
2466 return GvAVn(gv);
2467 if (gv)
2468 return GvAV(gv);
7d49f689 2469 return NULL;
6224f72b
GS
2470}
2471
954c1994 2472/*
ccfc67b7
JH
2473=head1 Hash Manipulation Functions
2474
954c1994
GS
2475=for apidoc p||get_hv
2476
2477Returns the HV of the specified Perl hash. If C<create> is set and the
2478Perl variable does not exist then it will be created. If C<create> is not
2479set and the variable does not exist then NULL is returned.
2480
2481=cut
2482*/
2483
6224f72b 2484HV*
864dbfa3 2485Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2486{
890ce7af 2487 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2488 if (create)
2489 return GvHVn(gv);
2490 if (gv)
2491 return GvHV(gv);
5c284bb0 2492 return NULL;
a0d0e21e
LW
2493}
2494
954c1994 2495/*
ccfc67b7
JH
2496=head1 CV Manipulation Functions
2497
780a5241
NC
2498=for apidoc p||get_cvn_flags
2499
2500Returns the CV of the specified Perl subroutine. C<flags> are passed to
2501C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2502exist then it will be declared (which has the same effect as saying
2503C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2504then NULL is returned.
2505
954c1994
GS
2506=for apidoc p||get_cv
2507
780a5241 2508Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2509
2510=cut
2511*/
2512
a0d0e21e 2513CV*
780a5241 2514Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2515{
780a5241 2516 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2517 /* XXX this is probably not what they think they're getting.
2518 * It has the same effect as "sub name;", i.e. just a forward
2519 * declaration! */
780a5241
NC
2520 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
2521 SV *const sv = newSVpvn(name,len);
2522 SvFLAGS(sv) |= flags & SVf_UTF8;
774d564b 2523 return newSUB(start_subparse(FALSE, 0),
780a5241 2524 newSVOP(OP_CONST, 0, sv),
5f66b61c 2525 NULL, NULL);
780a5241 2526 }
a0d0e21e 2527 if (gv)
8ebc5c01 2528 return GvCVu(gv);
601f1833 2529 return NULL;
a0d0e21e
LW
2530}
2531
780a5241
NC
2532CV*
2533Perl_get_cv(pTHX_ const char *name, I32 flags)
2534{
2535 return get_cvn_flags(name, strlen(name), flags);
2536}
2537
79072805
LW
2538/* Be sure to refetch the stack pointer after calling these routines. */
2539
954c1994 2540/*
ccfc67b7
JH
2541
2542=head1 Callback Functions
2543
954c1994
GS
2544=for apidoc p||call_argv
2545
2546Performs a callback to the specified Perl sub. See L<perlcall>.
2547
2548=cut
2549*/
2550
a0d0e21e 2551I32
8f42b153 2552Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2553
8ac85365
NIS
2554 /* See G_* flags in cop.h */
2555 /* null terminated arg list */
8990e307 2556{
97aff369 2557 dVAR;
a0d0e21e 2558 dSP;
8990e307 2559
924508f0 2560 PUSHMARK(SP);
a0d0e21e 2561 if (argv) {
8990e307 2562 while (*argv) {
a0d0e21e 2563 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2564 argv++;
2565 }
a0d0e21e 2566 PUTBACK;
8990e307 2567 }
864dbfa3 2568 return call_pv(sub_name, flags);
8990e307
LW
2569}
2570
954c1994
GS
2571/*
2572=for apidoc p||call_pv
2573
2574Performs a callback to the specified Perl sub. See L<perlcall>.
2575
2576=cut
2577*/
2578
a0d0e21e 2579I32
864dbfa3 2580Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2581 /* name of the subroutine */
2582 /* See G_* flags in cop.h */
a0d0e21e 2583{
864dbfa3 2584 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2585}
2586
954c1994
GS
2587/*
2588=for apidoc p||call_method
2589
2590Performs a callback to the specified Perl method. The blessed object must
2591be on the stack. See L<perlcall>.
2592
2593=cut
2594*/
2595
a0d0e21e 2596I32
864dbfa3 2597Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2598 /* name of the subroutine */
2599 /* See G_* flags in cop.h */
a0d0e21e 2600{
968b3946 2601 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2602}
2603
2604/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2605/*
2606=for apidoc p||call_sv
2607
2608Performs a callback to the Perl sub whose name is in the SV. See
2609L<perlcall>.
2610
2611=cut
2612*/
2613
a0d0e21e 2614I32
864dbfa3 2615Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2616 /* See G_* flags in cop.h */
a0d0e21e 2617{
27da23d5 2618 dVAR; dSP;
a0d0e21e 2619 LOGOP myop; /* fake syntax tree node */
968b3946 2620 UNOP method_op;
aa689395 2621 I32 oldmark;
8ea43dc8 2622 VOL I32 retval = 0;
a0d0e21e 2623 I32 oldscope;
54310121 2624 bool oldcatch = CATCH_GET;
6224f72b 2625 int ret;
c4420975 2626 OP* const oldop = PL_op;
db36c5a1 2627 dJMPENV;
1e422769 2628
a0d0e21e
LW
2629 if (flags & G_DISCARD) {
2630 ENTER;
2631 SAVETMPS;
2632 }
2633
aa689395 2634 Zero(&myop, 1, LOGOP);
5f66b61c 2635 myop.op_next = NULL;
f51d4af5 2636 if (!(flags & G_NOARGS))
aa689395 2637 myop.op_flags |= OPf_STACKED;
54310121
PP
2638 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2639 (flags & G_ARRAY) ? OPf_WANT_LIST :
2640 OPf_WANT_SCALAR);
462e5cf6 2641 SAVEOP();
533c011a 2642 PL_op = (OP*)&myop;
aa689395 2643
3280af22
NIS
2644 EXTEND(PL_stack_sp, 1);
2645 *++PL_stack_sp = sv;
aa689395 2646 oldmark = TOPMARK;
3280af22 2647 oldscope = PL_scopestack_ix;
a0d0e21e 2648
3280af22 2649 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2650 /* Handle first BEGIN of -d. */
3280af22 2651 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2652 /* Try harder, since this may have been a sighandler, thus
2653 * curstash may be meaningless. */
3280af22 2654 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2655 && !(flags & G_NODEBUG))
533c011a 2656 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2657
968b3946
GS
2658 if (flags & G_METHOD) {
2659 Zero(&method_op, 1, UNOP);
2660 method_op.op_next = PL_op;
2661 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2662 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2663 PL_op = (OP*)&method_op;
968b3946
GS
2664 }
2665
312caa8e 2666 if (!(flags & G_EVAL)) {
0cdb2077 2667 CATCH_SET(TRUE);
d6f07c05 2668 CALL_BODY_SUB((OP*)&myop);
312caa8e 2669 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2670 CATCH_SET(oldcatch);
312caa8e
CS
2671 }
2672 else {
d78bda3d 2673 myop.op_other = (OP*)&myop;
3280af22 2674 PL_markstack_ptr--;
edb2152a 2675 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2676 PL_markstack_ptr++;
a0d0e21e 2677
14dd3ad8 2678 JMPENV_PUSH(ret);
edb2152a 2679
6224f72b
GS
2680 switch (ret) {
2681 case 0:
14dd3ad8 2682 redo_body:
d6f07c05 2683 CALL_BODY_SUB((OP*)&myop);
312caa8e
CS
2684 retval = PL_stack_sp - (PL_stack_base + oldmark);
2685 if (!(flags & G_KEEPERR))
c69006e4 2686 sv_setpvn(ERRSV,"",0);
a0d0e21e 2687 break;
6224f72b 2688 case 1:
f86702cc 2689 STATUS_ALL_FAILURE;
a0d0e21e 2690 /* FALL THROUGH */
6224f72b 2691 case 2:
a0d0e21e 2692 /* my_exit() was called */
3280af22 2693 PL_curstash = PL_defstash;
a0d0e21e 2694 FREETMPS;
14dd3ad8 2695 JMPENV_POP;
cc3604b1 2696 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2697 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2698 my_exit_jump();
a0d0e21e 2699 /* NOTREACHED */
6224f72b 2700 case 3:
3280af22 2701 if (PL_restartop) {
533c011a 2702 PL_op = PL_restartop;
3280af22 2703 PL_restartop = 0;
312caa8e 2704 goto redo_body;
a0d0e21e 2705 }
3280af22 2706 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2707 if (flags & G_ARRAY)
2708 retval = 0;
2709 else {
2710 retval = 1;
3280af22 2711 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2712 }
312caa8e 2713 break;
a0d0e21e 2714 }
a0d0e21e 2715
edb2152a
NC
2716 if (PL_scopestack_ix > oldscope)
2717 delete_eval_scope();
14dd3ad8 2718 JMPENV_POP;
a0d0e21e 2719 }
1e422769 2720
a0d0e21e 2721 if (flags & G_DISCARD) {
3280af22 2722 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2723 retval = 0;
2724 FREETMPS;
2725 LEAVE;
2726 }
533c011a 2727 PL_op = oldop;
a0d0e21e
LW
2728 return retval;
2729}
2730
6e72f9df 2731/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2732
954c1994
GS
2733/*
2734=for apidoc p||eval_sv
2735
2736Tells Perl to C<eval> the string in the SV.
2737
2738=cut
2739*/
2740
a0d0e21e 2741I32
864dbfa3 2742Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2743
8ac85365 2744 /* See G_* flags in cop.h */
a0d0e21e 2745{
97aff369 2746 dVAR;
924508f0 2747 dSP;
a0d0e21e 2748 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2749 VOL I32 oldmark = SP - PL_stack_base;
2750 VOL I32 retval = 0;
6224f72b 2751 int ret;
c4420975 2752 OP* const oldop = PL_op;
db36c5a1 2753 dJMPENV;
84902520 2754
4633a7c4
LW
2755 if (flags & G_DISCARD) {
2756 ENTER;
2757 SAVETMPS;
2758 }
2759
462e5cf6 2760 SAVEOP();
533c011a
NIS
2761 PL_op = (OP*)&myop;
2762 Zero(PL_op, 1, UNOP);
3280af22
NIS
2763 EXTEND(PL_stack_sp, 1);
2764 *++PL_stack_sp = sv;
79072805 2765
4633a7c4
LW
2766 if (!(flags & G_NOARGS))
2767 myop.op_flags = OPf_STACKED;
5f66b61c 2768 myop.op_next = NULL;
6e72f9df 2769 myop.op_type = OP_ENTEREVAL;
54310121
PP
2770 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2771 (flags & G_ARRAY) ? OPf_WANT_LIST :
2772 OPf_WANT_SCALAR);
6e72f9df
PP
2773 if (flags & G_KEEPERR)
2774 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2775
dedbcade
DM
2776 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2777 * before a PUSHEVAL, which corrupts the stack after a croak */
2778 TAINT_PROPER("eval_sv()");
2779
14dd3ad8 2780 JMPENV_PUSH(ret);
6224f72b
GS
2781 switch (ret) {
2782 case 0:
14dd3ad8 2783 redo_body:
d6f07c05 2784 CALL_BODY_EVAL((OP*)&myop);
312caa8e
CS
2785 retval = PL_stack_sp - (PL_stack_base + oldmark);
2786 if (!(flags & G_KEEPERR))
c69006e4 2787 sv_setpvn(ERRSV,"",0);
4633a7c4 2788 break;
6224f72b 2789 case 1:
f86702cc 2790 STATUS_ALL_FAILURE;
4633a7c4 2791 /* FALL THROUGH */
6224f72b 2792 case 2:
4633a7c4 2793 /* my_exit() was called */
3280af22 2794 PL_curstash = PL_defstash;
4633a7c4 2795 FREETMPS;
14dd3ad8 2796 JMPENV_POP;
cc3604b1 2797 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2798 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2799 my_exit_jump();
4633a7c4 2800 /* NOTREACHED */
6224f72b 2801 case 3:
3280af22 2802 if (PL_restartop) {
533c011a 2803 PL_op = PL_restartop;
3280af22 2804 PL_restartop = 0;
312caa8e 2805 goto redo_body;
4633a7c4 2806 }
3280af22 2807 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2808 if (flags & G_ARRAY)
2809 retval = 0;
2810 else {
2811 retval = 1;
3280af22 2812 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2813 }
312caa8e 2814 break;
4633a7c4
LW
2815 }
2816
14dd3ad8 2817 JMPENV_POP;
4633a7c4 2818 if (flags & G_DISCARD) {
3280af22 2819 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2820 retval = 0;
2821 FREETMPS;
2822 LEAVE;
2823 }
533c011a 2824 PL_op = oldop;
4633a7c4
LW
2825 return retval;
2826}
2827
954c1994
GS
2828/*
2829=for apidoc p||eval_pv
2830
2831Tells Perl to C<eval> the given string and return an SV* result.
2832
2833=cut
2834*/
2835
137443ea 2836SV*
864dbfa3 2837Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2838{
97aff369 2839 dVAR;
137443ea
PP
2840 dSP;
2841 SV* sv = newSVpv(p, 0);
2842
864dbfa3 2843 eval_sv(sv, G_SCALAR);
137443ea
PP
2844 SvREFCNT_dec(sv);
2845
2846 SPAGAIN;
2847 sv = POPs;
2848 PUTBACK;
2849
2d8e6c8d 2850 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2851 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2852 }
137443ea
PP
2853
2854 return sv;
2855}
2856
4633a7c4
LW
2857/* Require a module. */
2858
954c1994 2859/*
ccfc67b7
JH
2860=head1 Embedding Functions
2861
954c1994
GS
2862=for apidoc p||require_pv
2863
7d3fb230
BS
2864Tells Perl to C<require> the file named by the string argument. It is
2865analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2866implemented that way; consider using load_module instead.
954c1994 2867
7d3fb230 2868=cut */
954c1994 2869
4633a7c4 2870void
864dbfa3 2871Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2872{
97aff369 2873 dVAR;
d3acc0f7 2874 dSP;
97aff369 2875 SV* sv;
e788e7d3 2876 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2877 PUTBACK;
be41e5d9
NC
2878 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2879 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2880 SPAGAIN;
2881 POPSTACK;
79072805
LW
2882}
2883
79072805 2884void
e1ec3a88 2885Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2886{
71315bf2 2887 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2888
c4420975 2889 if (gv)
14befaf4 2890 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2891}
2892
76e3520e 2893STATIC void
e1ec3a88 2894S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2895{
ab821d7f 2896 /* This message really ought to be max 23 lines.
75c72d73 2897 * Removed -h because the user already knows that option. Others? */
fb73857a 2898
27da23d5 2899 static const char * const usage_msg[] = {
aefc56c5
SF
2900"-0[octal] specify record separator (\\0, if no argument)",
2901"-A[mod][=pattern] activate all/given assertions",
2902"-a autosplit mode with -n or -p (splits $_ into @F)",
2903"-C[number/list] enables the listed Unicode features",
2904"-c check syntax only (runs BEGIN and CHECK blocks)",
2905"-d[:debugger] run program under debugger",
2906"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2907"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2908"-E program like -e, but enables all optional features",
aefc56c5 2909"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2910"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2911"-i[extension] edit <> files in place (makes backup if extension supplied)",
2912"-Idirectory specify @INC/#include directory (several -I's allowed)",
2913"-l[octal] enable line ending processing, specifies line terminator",
2914"-[mM][-]module execute \"use/no module...\" before executing program",
2915"-n assume \"while (<>) { ... }\" loop around program",
2916"-p assume loop like -n but print line also, like sed",
2917"-P run program through C preprocessor before compilation",
2918"-s enable rudimentary parsing for switches after programfile",
2919"-S look for programfile using PATH environment variable",
2920"-t enable tainting warnings",
2921"-T enable tainting checks",
2922"-u dump core after parsing program",
2923"-U allow unsafe operations",
2924"-v print version, subversion (includes VERY IMPORTANT perl info)",
2925"-V[:variable] print configuration summary (or a single Config.pm variable)",
2926"-w enable many useful warnings (RECOMMENDED)",
2927"-W enable all warnings",
2928"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2929"-X disable all warnings",
fb73857a
PP
2930"\n",
2931NULL
2932};
27da23d5 2933 const char * const *p = usage_msg;
fb73857a 2934
b0e47665
GS
2935 PerlIO_printf(PerlIO_stdout(),
2936 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2937 name);
fb73857a 2938 while (*p)
b0e47665 2939 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2940}
2941
b4ab917c
DM
2942/* convert a string of -D options (or digits) into an int.
2943 * sets *s to point to the char after the options */
2944
2945#ifdef DEBUGGING
2946int
e1ec3a88 2947Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2948{
27da23d5 2949 static const char * const usage_msgd[] = {
e6e64d9b
JC
2950 " Debugging flag values: (see also -d)",
2951 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2952 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2953 " l Context (loop) stack processing",
2954 " t Trace execution",
2955 " o Method and overloading resolution",
2956 " c String/numeric conversions",
2957 " P Print profiling info, preprocessor command for -P, source file input state",
2958 " m Memory allocation",
2959 " f Format processing",
2960 " r Regular expression parsing and execution",
2961 " x Syntax tree dump",
3679267a 2962 " u Tainting checks",
e6e64d9b
JC
2963 " H Hash dump -- usurps values()",
2964 " X Scratchpad allocation",
2965 " D Cleaning up",
2966 " S Thread synchronization",
2967 " T Tokenising",
2968 " R Include reference counts of dumped variables (eg when using -Ds)",
2969 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2970 " v Verbose: use in conjunction with other flags",
2971 " C Copy On Write",
2972 " A Consistency checks on internal structures",
3679267a 2973 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2974 NULL
2975 };
b4ab917c
DM
2976 int i = 0;
2977 if (isALPHA(**s)) {
2978 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2979 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2980
2981 for (; isALNUM(**s); (*s)++) {
c4420975 2982 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2983 if (d)
2984 i |= 1 << (d - debopts);
2985 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2986 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2987 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2988 }
2989 }
e6e64d9b 2990 else if (isDIGIT(**s)) {
b4ab917c
DM
2991 i = atoi(*s);
2992 for (; isALNUM(**s); (*s)++) ;
2993 }
ddcf8bc1 2994 else if (givehelp) {
06e869a4 2995 const char *const *p = usage_msgd;
e6e64d9b
JC
2996 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2997 }
b4ab917c
DM
2998# ifdef EBCDIC
2999 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3000 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3001 "-Dp not implemented on this platform\n");
3002# endif
3003 return i;
3004}
3005#endif
3006
79072805
LW
3007/* This routine handles any switches that can be given during run */
3008
3009char *
97bd5664 3010Perl_moreswitches(pTHX_ char *s)
79072805 3011{
27da23d5 3012 dVAR;
84c133a0 3013 UV rschar;
79072805
LW
3014
3015 switch (*s) {
3016 case '0':
a863c7d1 3017 {
f2095865 3018 I32 flags = 0;
a3b680e6 3019 STRLEN numlen;
f2095865
JH
3020
3021 SvREFCNT_dec(PL_rs);
3022 if (s[1] == 'x' && s[2]) {
a3b680e6 3023 const char *e = s+=2;
f2095865
JH
3024 U8 *tmps;
3025
a3b680e6
AL
3026 while (*e)
3027 e++;
f2095865
JH
3028 numlen = e - s;
3029 flags = PERL_SCAN_SILENT_ILLDIGIT;
3030 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3031 if (s + numlen < e) {
3032 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3033 numlen = 0;
3034 s--;
3035 }
396482e1 3036 PL_rs = newSVpvs("");
c5661c80 3037 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3038 tmps = (U8*)SvPVX(PL_rs);
3039 uvchr_to_utf8(tmps, rschar);
3040 SvCUR_set(PL_rs, UNISKIP(rschar));
3041 SvUTF8_on(PL_rs);
3042 }
3043 else {
3044 numlen = 4;
3045 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3046 if (rschar & ~((U8)~0))
3047 PL_rs = &PL_sv_undef;
3048 else if (!rschar && numlen >= 2)
396482e1 3049 PL_rs = newSVpvs("");
f2095865
JH
3050 else {
3051 char ch = (char)rschar;
3052 PL_rs = newSVpvn(&ch, 1);
3053 }
3054 }
800633c3 3055 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3056 return s + numlen;
a863c7d1 3057 }
46487f74 3058 case 'C':
a05d7ebb 3059 s++;
dd374669 3060 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3061 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3062 PL_utf8cache = -1;
46487f74 3063 return s;
2304df62 3064 case 'F':
3280af22 3065 PL_minus_F = TRUE;
ebce5377
RGS
3066 PL_splitstr = ++s;
3067 while (*s && !isSPACE(*s)) ++s;
e49e380e 3068 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3069 return s;
79072805 3070 case 'a':
3280af22 3071 PL_minus_a = TRUE;
79072805
LW
3072 s++;
3073 return s;
3074 case 'c':
3280af22 3075 PL_minus_c = TRUE;
79072805
LW
3076 s++;
3077 return s;
3078 case 'd':
97bd5664 3079 forbid_setid('d', -1);
4633a7c4 3080 s++;
2cbb2ee1
RGS
3081
3082 /* -dt indicates to the debugger that threads will be used */
3083 if (*s == 't' && !isALNUM(s[1])) {
3084 ++s;
3085 my_setenv("PERL5DB_THREADED", "1");
3086 }
3087
70c94a19
RR
3088 /* The following permits -d:Mod to accepts arguments following an =
3089 in the fashion that -MSome::Mod does. */
3090 if (*s == ':' || *s == '=') {
06b5626a 3091 const char *start;
396482e1 3092 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3093 start = ++s;
3094 /* We now allow -d:Module=Foo,Bar */
3095 while(isALNUM(*s) || *s==':') ++s;
3096 if (*s != '=')
3097 sv_catpv(sv, start);
3098 else {
3099 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3100 /* Don't use NUL as q// delimiter here, this string goes in the
3101 * environment. */
3102 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3103 }
4633a7c4 3104 s += strlen(s);
184f32ec 3105 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3106 }
ed094faf 3107 if (!PL_perldb) {
3280af22 3108 PL_perldb = PERLDB_ALL;
a0d0e21e 3109 init_debugger();
ed094faf 3110 }
79072805
LW
3111 return s;
3112 case 'D':
0453d815 3113 {
79072805 3114#ifdef DEBUGGING
97bd5664 3115 forbid_setid('D', -1);
b4ab917c 3116 s++;
dd374669 3117 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3118#else /* !DEBUGGING */
0453d815 3119 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3120 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3121 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3122 for (s++; isALNUM(*s); s++) ;
79072805 3123#endif
79072805 3124 return s;
0453d815 3125 }
4633a7c4 3126 case 'h':
ac27b0f5 3127 usage(PL_origargv[0]);
7ca617d0 3128 my_exit(0);
79072805 3129 case 'i':
43c5f42d 3130 Safefree(PL_inplace);
c030f24b
GH
3131#if defined(__CYGWIN__) /* do backup extension automagically */
3132 if (*(s+1) == '\0') {
c86a4f2e 3133 PL_inplace = savepvs(".bak");
c030f24b
GH
3134 return s+1;
3135 }
3136#endif /* __CYGWIN__ */
5ef5d758 3137 {
d4c19fe8 3138 const char * const start = ++s;
5ef5d758
NC
3139 while (*s && !isSPACE(*s))
3140 ++s;
3141
3142 PL_inplace = savepvn(start, s - start);
3143 }
7b8d334a 3144 if (*s) {
5ef5d758 3145 ++s;
7b8d334a 3146 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3147 s++;
7b8d334a 3148 }
fb73857a 3149 return s;
4e49a025 3150 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3151 forbid_setid('I', -1);
fb73857a
PP
3152 ++s;
3153 while (*s && isSPACE(*s))
3154 ++s;
3155 if (*s) {
774d564b 3156 char *e, *p;
0df16ed7
GS
3157 p = s;
3158 /* ignore trailing spaces (possibly followed by other switches) */
3159 do {
3160 for (e = p; *e && !isSPACE(*e); e++) ;
3161 p = e;
3162 while (isSPACE(*p))
3163 p++;
3164 } while (*p && *p != '-');
3165 e = savepvn(s, e-s);
88fe16b2 3166 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3167 Safefree(e);
3168 s = p;
3169 if (*s == '-')
3170 s++;
79072805
LW
3171 }
3172 else
a67e862a 3173 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3174 return s;
79072805 3175 case 'l':
3280af22 3176 PL_minus_l = TRUE;
79072805 3177 s++;
7889fe52
NIS
3178 if (PL_ors_sv) {
3179 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3180 PL_ors_sv = NULL;
7889fe52 3181 }
79072805 3182 if (isDIGIT(*s)) {
53305cf1 3183 I32 flags = 0;
a3b680e6 3184 STRLEN numlen;
396482e1 3185 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3186 numlen = 3 + (*s == '0');
3187 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3188 s += numlen;
3189 }
3190 else {
8bfdd7d9 3191 if (RsPARA(PL_rs)) {
396482e1 3192 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3193 }
3194 else {
8bfdd7d9 3195 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3196 }
79072805
LW
3197 }
3198 return s;
06492da6 3199 case 'A':
97bd5664 3200 forbid_setid('A', -1);
aefc56c5
SF
3201 s++;
3202 {
44f8325f 3203 char * const start = s;
396482e1 3204 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3205 while(isALNUM(*s) || *s == ':') ++s;
3206 if (s != start) {
396482e1 3207 sv_catpvs(sv, "::");
aefc56c5
SF
3208 sv_catpvn(sv, start, s-start);
3209 }
3210 if (*s == '=') {
0c5a913d 3211 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3212 s+=strlen(s);
3213 }
3214 else if (*s != '\0') {
551405c4 3215 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3216 }
29a861e7 3217 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
aefc56c5 3218 return s;
06492da6 3219 }
1a30305b 3220 case 'M':
97bd5664 3221 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3222 /* FALL THROUGH */
3223 case 'm':
97bd5664 3224 forbid_setid('m', -1); /* XXX ? */
1a30305b 3225 if (*++s) {
a5f75d66 3226 char *start;
11343788 3227 SV *sv;
e1ec3a88 3228 const char *use = "use ";
a5f75d66 3229 /* -M-foo == 'no foo' */
d0043bd1
NC
3230 /* Leading space on " no " is deliberate, to make both
3231 possibilities the same length. */
3232 if (*s == '-') { use = " no "; ++s; }
3233 sv = newSVpvn(use,4);
a5f75d66 3234 start = s;
1a30305b 3235 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3236 while(isALNUM(*s) || *s==':') ++s;
3237 if (*s != '=') {
11343788 3238 sv_catpv(sv, start);
c07a80fd
PP
3239 if (*(start-1) == 'm') {
3240 if (*s != '\0')
cea2e8a9 3241 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3242 sv_catpvs( sv, " ()");
c07a80fd
PP
3243 }
3244 } else {
6df41af2 3245 if (s == start)
be98fb35
GS
3246 Perl_croak(aTHX_ "Module name required with -%c option",
3247 s[-1]);
11343788 3248 sv_catpvn(sv, start, s-start);
396482e1
GA
3249 sv_catpvs(sv, " split(/,/,q");
3250 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3251 sv_catpv(sv, ++s);
396482e1 3252 sv_catpvs(sv, "\0)");
c07a80fd 3253 }
1a30305b 3254 s += strlen(s);
29a861e7 3255 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3256 }
3257 else
9e81e6a1 3258 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3259 return s;
79072805 3260 case 'n':
3280af22 3261 PL_minus_n = TRUE;
79072805
LW
3262 s++;
3263 return s;
3264 case 'p':
3280af22 3265 PL_minus_p = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 's':
97bd5664 3269 forbid_setid('s', -1);
3280af22 3270 PL_doswitches = TRUE;
79072805
LW
3271 s++;
3272 return s;
6537fe72
MS
3273 case 't':
3274 if (!PL_tainting)
22f7c9c9 3275 TOO_LATE_FOR('t');
6537fe72
MS
3276 s++;
3277 return s;
463ee0b2 3278 case 'T':
3280af22 3279 if (!PL_tainting)
22f7c9c9 3280 TOO_LATE_FOR('T');
463ee0b2
LW
3281 s++;
3282 return s;
79072805 3283 case 'u':
bf4acbe4
GS
3284#ifdef MACOS_TRADITIONAL
3285 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3286#endif
3280af22 3287 PL_do_undump = TRUE;
79072805
LW
3288 s++;
3289 return s;
3290 case 'U':
3280af22 3291 PL_unsafe = TRUE;
79072805
LW
3292 s++;
3293 return s;
3294 case 'v':
d7aa5382 3295 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3296 upg_version(PL_patchlevel, TRUE);
8e9464f1 3297#if !defined(DGUX)
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3299 Perl_form(aTHX_ "\nThis is perl, %"SVf
3300#ifdef PERL_PATCHNUM
3301 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3302#endif
3303 " built for %s",
be2597df 3304 SVfARG(vstringify(PL_patchlevel)),
95b63a38 3305 ARCHNAME));
8e9464f1
JH
3306#else /* DGUX */
3307/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3308 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3309 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3310 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3311 PerlIO_printf(PerlIO_stdout(),
3312 Perl_form(aTHX_ " built under %s at %s %s\n",
3313 OSNAME, __DATE__, __TIME__));
3314 PerlIO_printf(PerlIO_stdout(),
3315 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3316 OSVERS));
8e9464f1
JH
3317#endif /* !DGUX */
3318
fb73857a
PP
3319#if defined(LOCAL_PATCH_COUNT)
3320 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "\n(with %d registered patch%s, "
3323 "see perl -V for more detail)",
bb7a0f54 3324 LOCAL_PATCH_COUNT,
b0e47665 3325 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3326#endif
1a30305b 3327
b0e47665 3328 PerlIO_printf(PerlIO_stdout(),
34ce1597 3329 "\n\nCopyright 1987-2007, Larry Wall\n");
eae9c151
JH
3330#ifdef MACOS_TRADITIONAL
3331 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3332 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3333 "maintained by Chris Nandor\n");
eae9c151 3334#endif
79072805 3335#ifdef MSDOS
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3338#endif
3339#ifdef DJGPP
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3342 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3343#endif
79072805 3344#ifdef OS2
b0e47665
GS
3345 PerlIO_printf(PerlIO_stdout(),
3346 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3347 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3348#endif
79072805 3349#ifdef atarist
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3352#endif
a3f9223b 3353#ifdef __BEOS__
b0e47665
GS
3354 PerlIO_printf(PerlIO_stdout(),
3355 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3356#endif
1d84e8df 3357#ifdef MPE
b0e47665 3358 PerlIO_printf(PerlIO_stdout(),
e583a879 3359 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3360#endif
9d116dd7 3361#ifdef OEMVS
b0e47665
GS
3362 PerlIO_printf(PerlIO_stdout(),
3363 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3364#endif
495c5fdc 3365#ifdef __VOS__
b0e47665 3366 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3367 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3368#endif
092bebab 3369#ifdef __OPEN_VM
b0e47665
GS
3370 PerlIO_printf(PerlIO_stdout(),
3371 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3372#endif
a1a0e61e 3373#ifdef POSIX_BC
b0e47665
GS
3374 PerlIO_printf(PerlIO_stdout(),
3375 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3376#endif
61ae2fbf 3377#ifdef __MINT__
b0e47665
GS
3378 PerlIO_printf(PerlIO_stdout(),
3379 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3380#endif
f83d2536 3381#ifdef EPOC
b0e47665 3382 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3383 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3384#endif
e1caacb4 3385#ifdef UNDER_CE
b475b3e6
JH
3386 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3387 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3388 wce_hitreturn();
3389#endif
a0fd4948 3390#ifdef __SYMBIAN32__
27da23d5
JH
3391 PerlIO_printf(PerlIO_stdout(),
3392 "Symbian port by Nokia, 2004-2005\n");
3393#endif
baed7233
DL
3394#ifdef BINARY_BUILD_NOTICE
3395 BINARY_BUILD_NOTICE;
3396#endif
b0e47665
GS
3397 PerlIO_printf(PerlIO_stdout(),
3398 "\n\
79072805 3399Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3400GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3401Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3402this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3403Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3404 my_exit(0);
79072805 3405 case 'w':
b2e5e6ba 3406 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3407 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3408 }
599cee73
PM
3409 s++;
3410 return s;
3411 case 'W':
ac27b0f5 3412 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3413 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3414 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3415 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3416 s++;
3417 return s;
3418 case 'X':
ac27b0f5 3419 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3420 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3421 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3422 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3423 s++;
3424 return s;
a0d0e21e 3425 case '*':
79072805
LW
3426 case ' ':
3427 if (s[1] == '-') /* Additional switches on #! line. */
3428 return s+2;
3429 break;
a0d0e21e 3430 case '-':
79072805 3431 case 0:
51882d45 3432#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3433 case '\r':
3434#endif
79072805
LW
3435 case '\n':
3436 case '\t':
3437 break;
aa689395
PP
3438#ifdef ALTERNATE_SHEBANG
3439 case 'S': /* OS/2 needs -S on "extproc" line. */
3440 break;
3441#endif
a0d0e21e 3442 case 'P':
3280af22 3443 if (PL_preprocess)
a0d0e21e
LW
3444 return s+1;
3445 /* FALL THROUGH */
79072805 3446 default:
cea2e8a9 3447 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3448 }
bd61b366 3449 return NULL;
79072805
LW
3450}
3451
3452/* compliments of Tom Christiansen */
3453
3454/* unexec() can be found in the Gnu emacs distribution */
ee580363 3455/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3456
3457void
864dbfa3 3458Perl_my_unexec(pTHX)
79072805 3459{
b37c2d43 3460 PERL_UNUSED_CONTEXT;
79072805 3461#ifdef UNEXEC
b37c2d43
AL
3462 SV * prog = newSVpv(BIN_EXP, 0);
3463 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3464 int status = 1;
79072805
LW
3465 extern int etext;
3466
396482e1 3467 sv_catpvs(prog, "/perl");
396482e1 3468 sv_catpvs(file, ".perldump");
79072805 3469
ee580363
GS
3470 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3471 /* unexec prints msg to stderr in case of failure */
6ad3d225 3472 PerlProc_exit(status);
79072805 3473#else
a5f75d66
AD
3474# ifdef VMS
3475# include <lib$routines.h>
3476 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3477# elif defined(WIN32) || defined(__CYGWIN__)
3478 Perl_croak(aTHX_ "dump is not supported");
aa689395 3479# else
79072805 3480 ABORT(); /* for use with undump */
aa689395 3481# endif
a5f75d66 3482#endif
79072805
LW
3483}
3484
cb68f92d
GS
3485/* initialize curinterp */
3486STATIC void
cea2e8a9 3487S_init_interp(pTHX)
cb68f92d 3488{
97aff369 3489 dVAR;
acfe0abc
GS
3490#ifdef MULTIPLICITY
3491# define PERLVAR(var,type)
3492# define PERLVARA(var,n,type)
3493# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3494# define PERLVARI(var,type,init) aTHX->var = init;
3495# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3496# else
acfe0abc
GS
3497# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3498# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3499# endif
acfe0abc 3500# include "intrpvar.h"
b7f7fff6 3501# include "thrdvar.h"