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-Dmad works, albeit with some test failures:
[perl5.git] / perl.c
CommitLineData
a0d0e21e
LW
1/* perl.c
2 *
4bb101f2 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3246d7a3 4 * 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
a687059c 5 *
352d5a3a
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
8d063cd8
LW
9 */
10
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LW
11/*
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
13 */
45d8adaa 14
166f8a29
DM
15/* This file contains the top-level functions that are used to create, use
16 * and destroy a perl interpreter, plus the functions used by XS code to
17 * call back into perl. Note that it does not contain the actual main()
ddfa107c 18 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
19 */
20
ae3f3efd
PS
21/* PSz 12 Nov 03
22 *
23 * Be proud that perl(1) may proclaim:
24 * Setuid Perl scripts are safer than C programs ...
25 * Do not abandon (deprecate) suidperl. Do not advocate C wrappers.
26 *
27 * The flow was: perl starts, notices script is suid, execs suidperl with same
28 * arguments; suidperl opens script, checks many things, sets itself with
29 * right UID, execs perl with similar arguments but with script pre-opened on
30 * /dev/fd/xxx; perl checks script is as should be and does work. This was
31 * insecure: see perlsec(1) for many problems with this approach.
32 *
33 * The "correct" flow should be: perl starts, opens script and notices it is
34 * suid, checks many things, execs suidperl with similar arguments but with
35 * script on /dev/fd/xxx; suidperl checks script and /dev/fd/xxx object are
36 * same, checks arguments match #! line, sets itself with right UID, execs
37 * perl with same arguments; perl checks many things and does work.
38 *
39 * (Opening the script in perl instead of suidperl, we "lose" scripts that
40 * are readable to the target UID but not to the invoker. Where did
41 * unreadable scripts work anyway?)
42 *
43 * For now, suidperl and perl are pretty much the same large and cumbersome
44 * program, so suidperl can check its argument list (see comments elsewhere).
45 *
46 * References:
47 * Original bug report:
48 * http://bugs.perl.org/index.html?req=bug_id&bug_id=20010322.218
49 * http://rt.perl.org/rt2/Ticket/Display.html?id=6511
50 * Comments and discussion with Debian:
51 * http://bugs.debian.org/203426
52 * http://bugs.debian.org/220486
53 * Debian Security Advisory DSA 431-1 (does not fully fix problem):
54 * http://www.debian.org/security/2004/dsa-431
55 * CVE candidate:
56 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0618
57 * Previous versions of this patch sent to perl5-porters:
58 * http://www.mail-archive.com/perl5-porters@perl.org/msg71953.html
59 * http://www.mail-archive.com/perl5-porters@perl.org/msg75245.html
60 * http://www.mail-archive.com/perl5-porters@perl.org/msg75563.html
61 * http://www.mail-archive.com/perl5-porters@perl.org/msg75635.html
62 *
63Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
64School of Mathematics and Statistics University of Sydney 2006 Australia
65 *
66 */
67/* PSz 13 Nov 03
68 * Use truthful, neat, specific error messages.
69 * Cannot always hide the truth; security must not depend on doing so.
70 */
71
72/* PSz 18 Feb 04
73 * Use global(?), thread-local fdscript for easier checks.
74 * (I do not understand how we could possibly get a thread race:
75 * do not all threads go through the same initialization? Or in
76 * fact, are not threads started only after we get the script and
77 * so know what to do? Oh well, make things super-safe...)
78 */
79
378cc40b 80#include "EXTERN.h"
864dbfa3 81#define PERL_IN_PERL_C
378cc40b 82#include "perl.h"
e3321bb0 83#include "patchlevel.h" /* for local_patches */
378cc40b 84
011f1a1a
JH
85#ifdef NETWARE
86#include "nwutil.h"
87char *nw_get_sitelib(const char *pl);
88#endif
89
df5cef82 90/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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91#ifdef I_UNISTD
92#include <unistd.h>
93#endif
a0d0e21e 94
2aa47728
NC
95#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
96# ifdef I_SYS_WAIT
97# include <sys/wait.h>
98# endif
bf357333
NC
99# ifdef I_SYSUIO
100# include <sys/uio.h>
101# endif
102
103union control_un {
104 struct cmsghdr cm;
105 char control[CMSG_SPACE(sizeof(int))];
106};
107
2aa47728
NC
108#endif
109
5311654c
JH
110#ifdef __BEOS__
111# define HZ 1000000
112#endif
113
114#ifndef HZ
115# ifdef CLK_TCK
116# define HZ CLK_TCK
117# else
118# define HZ 60
119# endif
120#endif
121
7114a2d2 122#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 123char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
124#endif
125
acfe0abc 126static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 127
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128#ifdef IAMSUID
129#ifndef DOSUID
130#define DOSUID
131#endif
ae3f3efd 132#endif /* IAMSUID */
378cc40b 133
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134#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
135#ifdef DOSUID
136#undef DOSUID
137#endif
138#endif
8d063cd8 139
e6827a76 140static void
daa7d858 141S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 142{
27da23d5 143 dVAR;
e6827a76
NC
144 if (!PL_curinterp) {
145 PERL_SET_INTERP(my_perl);
3db8f154 146#if defined(USE_ITHREADS)
e6827a76
NC
147 INIT_THREADS;
148 ALLOC_THREAD_KEY;
149 PERL_SET_THX(my_perl);
150 OP_REFCNT_INIT;
151 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 152# endif
016af4f1
DM
153#ifdef PERL_IMPLICIT_CONTEXT
154 MUTEX_INIT(&PL_my_ctx_mutex);
155# endif
e6827a76
NC
156 }
157 else {
158 PERL_SET_THX(my_perl);
159 }
160}
06d86050 161
32e30700
GS
162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
7766f137
GS
164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
9f653bb5 171 /* Newx() needs interpreter, so call malloc() instead */
32e30700 172 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 173 S_init_tls_and_interp(my_perl);
32e30700
GS
174 Zero(my_perl, 1, PerlInterpreter);
175 PL_Mem = ipM;
7766f137
GS
176 PL_MemShared = ipMS;
177 PL_MemParse = ipMP;
32e30700
GS
178 PL_Env = ipE;
179 PL_StdIO = ipStd;
180 PL_LIO = ipLIO;
181 PL_Dir = ipD;
182 PL_Sock = ipS;
183 PL_Proc = ipP;
7cb608b5 184 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 185
32e30700
GS
186 return my_perl;
187}
188#else
954c1994
GS
189
190/*
ccfc67b7
JH
191=head1 Embedding Functions
192
954c1994
GS
193=for apidoc perl_alloc
194
195Allocates a new Perl interpreter. See L<perlembed>.
196
197=cut
198*/
199
93a17b20 200PerlInterpreter *
cea2e8a9 201perl_alloc(void)
79072805 202{
cea2e8a9 203 PerlInterpreter *my_perl;
79072805 204
9f653bb5 205 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 206 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 207
e6827a76 208 S_init_tls_and_interp(my_perl);
7cb608b5 209#ifndef PERL_TRACK_MEMPOOL
07409e01 210 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
211#else
212 Zero(my_perl, 1, PerlInterpreter);
213 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
214 return my_perl;
215#endif
79072805 216}
32e30700 217#endif /* PERL_IMPLICIT_SYS */
79072805 218
954c1994
GS
219/*
220=for apidoc perl_construct
221
222Initializes a new Perl interpreter. See L<perlembed>.
223
224=cut
225*/
226
79072805 227void
0cb96387 228perl_construct(pTHXx)
79072805 229{
27da23d5 230 dVAR;
96a5add6 231 PERL_UNUSED_CONTEXT;
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467
GS
235#else
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
33f46ff6 239 /* Init the real globals (and main thread)? */
3280af22 240 if (!PL_linestr) {
2aea9f8a
GS
241 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
242
561b68a9 243 PL_linestr = newSV(79);
3280af22 244 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 245
3280af22 246 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
3280af22
NIS
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 252
3280af22 253 sv_setpv(&PL_sv_no,PL_No);
0309f36e
NC
254 /* value lookup in void context - happens to have the side effect
255 of caching the numeric forms. */
256 SvIV(&PL_sv_no);
3280af22
NIS
257 SvNV(&PL_sv_no);
258 SvREADONLY_on(&PL_sv_no);
259 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 260
3280af22 261 sv_setpv(&PL_sv_yes,PL_Yes);
0309f36e 262 SvIV(&PL_sv_yes);
3280af22
NIS
263 SvNV(&PL_sv_yes);
264 SvREADONLY_on(&PL_sv_yes);
265 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7996736c
MHM
266
267 SvREADONLY_on(&PL_sv_placeholder);
268 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
6e72f9df 269 }
79072805 270
8aad04aa 271 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 272#ifdef PERL_USES_PL_PIDSTATUS
3280af22 273 PL_pidstatus = newHV();
ca0c25f6 274#endif
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275 }
276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
3280af22 282 PL_lex_state = LEX_NOTPARSING;
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
GS
294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
48c6b404 303 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
304 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
305 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
13137afc
AB
307 PL_regex_padav = newAV();
308 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
309 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 310#endif
e5dd39fc 311#ifdef USE_REENTRANT_API
59bd0823 312 Perl_reentrant_init(aTHX);
e5dd39fc 313#endif
3d47000e
AB
314
315 /* Note that strtab is a rather special HV. Assumptions are made
316 about not iterating on it, and not adding tie magic to it.
317 It is properly deallocated in perl_destruct() */
318 PL_strtab = newHV();
319
3d47000e
AB
320 HvSHAREKEYS_off(PL_strtab); /* mandatory */
321 hv_ksplit(PL_strtab, 512);
322
0631ea03
AB
323#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
324 _dyld_lookup_and_bind
325 ("__environ", (unsigned long *) &environ_pointer, NULL);
326#endif /* environ */
327
2f42fcb0
JH
328#ifndef PERL_MICRO
329# ifdef USE_ENVIRON_ARRAY
0631ea03 330 PL_origenviron = environ;
2f42fcb0 331# endif
0631ea03
AB
332#endif
333
5311654c 334 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 335 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
336 * BeOS has those, but returns the wrong value.
337 * The HZ if not originally defined has been by now
338 * been defined as CLK_TCK, if available. */
dbc1d986 339#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
340 PL_clocktick = sysconf(_SC_CLK_TCK);
341 if (PL_clocktick <= 0)
342#endif
343 PL_clocktick = HZ;
344
081fc587
AB
345 PL_stashcache = newHV();
346
e6830b13
NC
347 PL_patchlevel = Perl_newSVpvf(aTHX_ "%d.%d.%d", (int)PERL_REVISION,
348 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 349
27da23d5
JH
350#ifdef HAS_MMAP
351 if (!PL_mmap_page_size) {
352#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
353 {
354 SETERRNO(0, SS_NORMAL);
355# ifdef _SC_PAGESIZE
356 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
357# else
358 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
359# endif
360 if ((long) PL_mmap_page_size < 0) {
361 if (errno) {
44f8325f 362 SV * const error = ERRSV;
27da23d5 363 (void) SvUPGRADE(error, SVt_PV);
0510663f 364 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
365 }
366 else
367 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
368 }
369 }
370#else
371# ifdef HAS_GETPAGESIZE
372 PL_mmap_page_size = getpagesize();
373# else
374# if defined(I_SYS_PARAM) && defined(PAGESIZE)
375 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
376# endif
377# endif
378#endif
379 if (PL_mmap_page_size <= 0)
380 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
381 (IV) PL_mmap_page_size);
382 }
383#endif /* HAS_MMAP */
384
385#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
386 PL_timesbase.tms_utime = 0;
387 PL_timesbase.tms_stime = 0;
388 PL_timesbase.tms_cutime = 0;
389 PL_timesbase.tms_cstime = 0;
390#endif
391
8990e307 392 ENTER;
79072805
LW
393}
394
954c1994 395/*
62375a60
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396=for apidoc nothreadhook
397
398Stub that provides thread hook for perl_destruct when there are
399no threads.
400
401=cut
402*/
403
404int
4e9e3734 405Perl_nothreadhook(pTHX)
62375a60 406{
96a5add6 407 PERL_UNUSED_CONTEXT;
62375a60
NIS
408 return 0;
409}
410
41e4abd8
NC
411#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
412void
413Perl_dump_sv_child(pTHX_ SV *sv)
414{
415 ssize_t got;
bf357333
NC
416 const int sock = PL_dumper_fd;
417 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
418 union control_un control;
419 struct msghdr msg;
808ad2d0 420 struct iovec vec[2];
bf357333 421 struct cmsghdr *cmptr;
808ad2d0
NC
422 int returned_errno;
423 unsigned char buffer[256];
41e4abd8 424
bf357333 425 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
426 return;
427
428 PerlIO_flush(Perl_debug_log);
429
bf357333
NC
430 /* All these shenanigans are to pass a file descriptor over to our child for
431 it to dump out to. We can't let it hold open the file descriptor when it
432 forks, as the file descriptor it will dump to can turn out to be one end
433 of pipe that some other process will wait on for EOF. (So as it would
434 be open, the wait would be forever. */
435
436 msg.msg_control = control.control;
437 msg.msg_controllen = sizeof(control.control);
438 /* We're a connected socket so we don't need a destination */
439 msg.msg_name = NULL;
440 msg.msg_namelen = 0;
441 msg.msg_iov = vec;
808ad2d0 442 msg.msg_iovlen = 1;
bf357333
NC
443
444 cmptr = CMSG_FIRSTHDR(&msg);
445 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
446 cmptr->cmsg_level = SOL_SOCKET;
447 cmptr->cmsg_type = SCM_RIGHTS;
448 *((int *)CMSG_DATA(cmptr)) = 1;
449
450 vec[0].iov_base = (void*)&sv;
451 vec[0].iov_len = sizeof(sv);
452 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
453
454 if(got < 0) {
bf357333 455 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
456 abort();
457 }
bf357333
NC
458 if(got < sizeof(sv)) {
459 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
460 abort();
461 }
462
808ad2d0
NC
463 /* Return protocol is
464 int: errno value
465 unsigned char: length of location string (0 for empty)
466 unsigned char*: string (not terminated)
467 */
468 vec[0].iov_base = (void*)&returned_errno;
469 vec[0].iov_len = sizeof(returned_errno);
470 vec[1].iov_base = buffer;
471 vec[1].iov_len = 1;
472
473 got = readv(sock, vec, 2);
41e4abd8
NC
474
475 if(got < 0) {
476 perror("Debug leaking scalars parent read failed");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
808ad2d0 480 if(got < sizeof(returned_errno) + 1) {
41e4abd8 481 perror("Debug leaking scalars parent short read");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
485
808ad2d0
NC
486 if (*buffer) {
487 got = read(sock, buffer + 1, *buffer);
488 if(got < 0) {
489 perror("Debug leaking scalars parent read 2 failed");
490 PerlIO_flush(PerlIO_stderr());
491 abort();
492 }
493
494 if(got < *buffer) {
495 perror("Debug leaking scalars parent short read 2");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499 }
500
501 if (returned_errno || *buffer) {
502 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
503 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
504 returned_errno, strerror(returned_errno));
41e4abd8
NC
505 }
506}
507#endif
508
62375a60 509/*
954c1994
GS
510=for apidoc perl_destruct
511
512Shuts down a Perl interpreter. See L<perlembed>.
513
514=cut
515*/
516
31d77e54 517int
0cb96387 518perl_destruct(pTHXx)
79072805 519{
27da23d5 520 dVAR;
7c474504 521 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 522 HV *hv;
2aa47728 523#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
524 pid_t child;
525#endif
8990e307 526
96a5add6 527 PERL_UNUSED_CONTEXT;
9d4ba2ae 528
7766f137
GS
529 /* wait for all pseudo-forked children to finish */
530 PERL_WAIT_FOR_CHILDREN;
531
3280af22 532 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
533#ifdef DEBUGGING
534 {
9d4ba2ae
AL
535 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
536 if (s) {
e1ec3a88 537 const int i = atoi(s);
5f05dabc
PP
538 if (destruct_level < i)
539 destruct_level = i;
540 }
4633a7c4
LW
541 }
542#endif
543
27da23d5 544 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
545 dJMPENV;
546 int x = 0;
547
548 JMPENV_PUSH(x);
1b6737cc 549 PERL_UNUSED_VAR(x);
f3faeb53
AB
550 if (PL_endav && !PL_minus_c)
551 call_list(PL_scopestack_ix, PL_endav);
552 JMPENV_POP;
26f423df 553 }
f3faeb53 554 LEAVE;
a0d0e21e
LW
555 FREETMPS;
556
e00b64d4 557 /* Need to flush since END blocks can produce output */
f13a2bc0 558 my_fflush_all();
e00b64d4 559
62375a60
NIS
560 if (CALL_FPTR(PL_threadhook)(aTHX)) {
561 /* Threads hook has vetoed further cleanup */
37038d91 562 return STATUS_EXIT;
62375a60
NIS
563 }
564
2aa47728
NC
565#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
566 if (destruct_level != 0) {
567 /* Fork here to create a child. Our child's job is to preserve the
568 state of scalars prior to destruction, so that we can instruct it
569 to dump any scalars that we later find have leaked.
570 There's no subtlety in this code - it assumes POSIX, and it doesn't
571 fail gracefully */
572 int fd[2];
573
574 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
575 perror("Debug leaking scalars socketpair failed");
576 abort();
577 }
578
579 child = fork();
580 if(child == -1) {
581 perror("Debug leaking scalars fork failed");
582 abort();
583 }
584 if (!child) {
585 /* We are the child */
3125a5a4
NC
586 const int sock = fd[1];
587 const int debug_fd = PerlIO_fileno(Perl_debug_log);
588 int f;
808ad2d0
NC
589 const char *where;
590 /* Our success message is an integer 0, and a char 0 */
591 static const char success[sizeof(int) + 1];
3125a5a4 592
2aa47728 593 close(fd[0]);
2aa47728 594
3125a5a4
NC
595 /* We need to close all other file descriptors otherwise we end up
596 with interesting hangs, where the parent closes its end of a
597 pipe, and sits waiting for (another) child to terminate. Only
598 that child never terminates, because it never gets EOF, because
bf357333
NC
599 we also have the far end of the pipe open. We even need to
600 close the debugging fd, because sometimes it happens to be one
601 end of a pipe, and a process is waiting on the other end for
602 EOF. Normally it would be closed at some point earlier in
603 destruction, but if we happen to cause the pipe to remain open,
604 EOF never occurs, and we get an infinite hang. Hence all the
605 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
606
607 f = sysconf(_SC_OPEN_MAX);
608 if(f < 0) {
808ad2d0
NC
609 where = "sysconf failed";
610 goto abort;
3125a5a4
NC
611 }
612 while (f--) {
613 if (f == sock)
614 continue;
3125a5a4
NC
615 close(f);
616 }
617
2aa47728
NC
618 while (1) {
619 SV *target;
bf357333
NC
620 union control_un control;
621 struct msghdr msg;
622 struct iovec vec[1];
623 struct cmsghdr *cmptr;
624 ssize_t got;
625 int got_fd;
626
627 msg.msg_control = control.control;
628 msg.msg_controllen = sizeof(control.control);
629 /* We're a connected socket so we don't need a source */
630 msg.msg_name = NULL;
631 msg.msg_namelen = 0;
632 msg.msg_iov = vec;
633 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
634
635 vec[0].iov_base = (void*)&target;
636 vec[0].iov_len = sizeof(target);
637
638 got = recvmsg(sock, &msg, 0);
2aa47728
NC
639
640 if(got == 0)
641 break;
642 if(got < 0) {
808ad2d0
NC
643 where = "recv failed";
644 goto abort;
2aa47728
NC
645 }
646 if(got < sizeof(target)) {
808ad2d0
NC
647 where = "short recv";
648 goto abort;
2aa47728 649 }
bf357333 650
808ad2d0
NC
651 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
652 where = "no cmsg";
653 goto abort;
654 }
655 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
656 where = "wrong cmsg_len";
657 goto abort;
658 }
659 if(cmptr->cmsg_level != SOL_SOCKET) {
660 where = "wrong cmsg_level";
661 goto abort;
662 }
663 if(cmptr->cmsg_type != SCM_RIGHTS) {
664 where = "wrong cmsg_type";
665 goto abort;
666 }
bf357333
NC
667
668 got_fd = *(int*)CMSG_DATA(cmptr);
669 /* For our last little bit of trickery, put the file descriptor
670 back into Perl_debug_log, as if we never actually closed it
671 */
808ad2d0
NC
672 if(got_fd != debug_fd) {
673 if (dup2(got_fd, debug_fd) == -1) {
674 where = "dup2";
675 goto abort;
676 }
677 }
2aa47728 678 sv_dump(target);
bf357333 679
2aa47728
NC
680 PerlIO_flush(Perl_debug_log);
681
808ad2d0 682 got = write(sock, &success, sizeof(success));
2aa47728
NC
683
684 if(got < 0) {
808ad2d0
NC
685 where = "write failed";
686 goto abort;
2aa47728 687 }
808ad2d0
NC
688 if(got < sizeof(success)) {
689 where = "short write";
690 goto abort;
2aa47728
NC
691 }
692 }
693 _exit(0);
808ad2d0
NC
694 abort:
695 {
696 int send_errno = errno;
697 unsigned char length = (unsigned char) strlen(where);
698 struct iovec failure[3] = {
699 {(void*)&send_errno, sizeof(send_errno)},
700 {&length, 1},
701 {(void*)where, length}
702 };
703 int got = writev(sock, failure, 3);
704 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
705 in the parent if we try to read from the socketpair after the
706 child has exited, even if there was data to read.
707 So sleep a bit to give the parent a fighting chance of
708 reading the data. */
709 sleep(2);
710 _exit((got == -1) ? errno : 0);
711 }
bf357333 712 /* End of child. */
2aa47728 713 }
41e4abd8 714 PL_dumper_fd = fd[0];
2aa47728
NC
715 close(fd[1]);
716 }
717#endif
718
ff0cee69
PP
719 /* We must account for everything. */
720
721 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
722 /* Do this now, because destroying ops can cause new SVs to be generated
723 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
724 PL_curcop to point to a valid op from which the filename structure
725 member is copied. */
726 PL_curcop = &PL_compiling;
3280af22 727 if (PL_main_root) {
4e380990
DM
728 /* ensure comppad/curpad to refer to main's pad */
729 if (CvPADLIST(PL_main_cv)) {
730 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
731 }
3280af22 732 op_free(PL_main_root);
5f66b61c 733 PL_main_root = NULL;
a0d0e21e 734 }
5f66b61c 735 PL_main_start = NULL;
3280af22 736 SvREFCNT_dec(PL_main_cv);
601f1833 737 PL_main_cv = NULL;
24d3c518 738 PL_dirty = TRUE;
ff0cee69 739
13621cfb
NIS
740 /* Tell PerlIO we are about to tear things apart in case
741 we have layers which are using resources that should
742 be cleaned up now.
743 */
744
745 PerlIO_destruct(aTHX);
746
3280af22 747 if (PL_sv_objcount) {
a0d0e21e
LW
748 /*
749 * Try to destruct global references. We do this first so that the
750 * destructors and destructees still exist. Some sv's might remain.
751 * Non-referenced objects are on their own.
752 */
a0d0e21e 753 sv_clean_objs();
bf9cdc68 754 PL_sv_objcount = 0;
a0de6cf5 755 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 756 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
757 }
758
5cd24f17 759 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 760 SvREFCNT_dec(PL_warnhook);
a0714e2c 761 PL_warnhook = NULL;
3280af22 762 SvREFCNT_dec(PL_diehook);
a0714e2c 763 PL_diehook = NULL;
5cd24f17 764
4b556e6c 765 /* call exit list functions */
3280af22 766 while (PL_exitlistlen-- > 0)
acfe0abc 767 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 768
3280af22 769 Safefree(PL_exitlist);
4b556e6c 770
1c4916e5
CB
771 PL_exitlist = NULL;
772 PL_exitlistlen = 0;
773
a0d0e21e 774 if (destruct_level == 0){
8990e307 775
a0d0e21e 776 DEBUG_P(debprofdump());
ac27b0f5 777
56a2bab7
NIS
778#if defined(PERLIO_LAYERS)
779 /* No more IO - including error messages ! */
780 PerlIO_cleanup(aTHX);
781#endif
782
a0d0e21e 783 /* The exit() function will do everything that needs doing. */
37038d91 784 return STATUS_EXIT;
a0d0e21e 785 }
5dd60ef7 786
551a8b83 787 /* jettison our possibly duplicated environment */
4b647fb0
DM
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
790 */
2f42fcb0 791#ifndef PERL_MICRO
4b647fb0 792#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 793 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
794#ifdef USE_ITHREADS
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
797#endif
798 )
799 {
551a8b83
JH
800 I32 i;
801
802 for (i = 0; environ[i]; i++)
4b420006 803 safesysfree(environ[i]);
0631ea03 804
4b420006
JH
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
551a8b83
JH
807
808 environ = PL_origenviron;
809 }
810#endif
2f42fcb0 811#endif /* !PERL_MICRO */
551a8b83 812
804ffa60 813 /* reset so print() ends up where we expect */
a0714e2c 814 setdefout(NULL);
804ffa60 815
5f8cb046
DM
816#ifdef USE_ITHREADS
817 /* the syntax tree is shared between clones
818 * so op_free(PL_main_root) only ReREFCNT_dec's
819 * REGEXPs in the parent interpreter
820 * we need to manually ReREFCNT_dec for the clones
821 */
822 {
823 I32 i = AvFILLp(PL_regex_padav) + 1;
c4420975 824 SV * const * const ary = AvARRAY(PL_regex_padav);
5f8cb046
DM
825
826 while (i) {
c4420975 827 SV * const resv = ary[--i];
35061a7e
DM
828
829 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 830 /* this is PL_reg_curpm, already freed
35061a7e
DM
831 * flag is set in regexec.c:S_regtry
832 */
833 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 834 }
1cc8b4c5
AB
835 else if(SvREPADTMP(resv)) {
836 SvREPADTMP_off(resv);
837 }
a560f29b
NC
838 else if(SvIOKp(resv)) {
839 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
5f8cb046
DM
840 ReREFCNT_dec(re);
841 }
842 }
843 }
844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
081fc587
AB
849 SvREFCNT_dec((SV*) PL_stashcache);
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
3280af22
NIS
854 if(PL_rsfp) {
855 (void)PerlIO_close(PL_rsfp);
4608196e 856 PL_rsfp = NULL;
8ebc5c01
PP
857 }
858
859 /* Filters for program text */
3280af22 860 SvREFCNT_dec(PL_rsfp_filters);
7d49f689 861 PL_rsfp_filters = NULL;
8ebc5c01
PP
862
863 /* switches */
3280af22
NIS
864 PL_preprocess = FALSE;
865 PL_minus_n = FALSE;
866 PL_minus_p = FALSE;
867 PL_minus_l = FALSE;
868 PL_minus_a = FALSE;
869 PL_minus_F = FALSE;
870 PL_doswitches = FALSE;
599cee73 871 PL_dowarn = G_WARN_OFF;
3280af22
NIS
872 PL_doextract = FALSE;
873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
879
880 if (PL_e_script) {
881 SvREFCNT_dec(PL_e_script);
a0714e2c 882 PL_e_script = NULL;
8ebc5c01
PP
883 }
884
bf9cdc68
RG
885 PL_perldb = 0;
886
8ebc5c01
PP
887 /* magical thingies */
888
7889fe52 889 SvREFCNT_dec(PL_ofs_sv); /* $, */
a0714e2c 890 PL_ofs_sv = NULL;
5f05dabc 891
7889fe52 892 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 893 PL_ors_sv = NULL;
8ebc5c01 894
3280af22 895 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 896 PL_rs = NULL;
dc92893f 897
d33b2eba
GS
898 PL_multiline = 0; /* $* */
899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
8ebc5c01 908 /* clean up after study() */
3280af22 909 SvREFCNT_dec(PL_lastscream);
a0714e2c 910 PL_lastscream = NULL;
3280af22
NIS
911 Safefree(PL_screamfirst);
912 PL_screamfirst = 0;
913 Safefree(PL_screamnext);
914 PL_screamnext = 0;
8ebc5c01 915
7d5ea4e7
GS
916 /* float buffer */
917 Safefree(PL_efloatbuf);
bd61b366 918 PL_efloatbuf = NULL;
7d5ea4e7
GS
919 PL_efloatsize = 0;
920
8ebc5c01 921 /* startup and shutdown function lists */
3280af22 922 SvREFCNT_dec(PL_beginav);
5a837c8f 923 SvREFCNT_dec(PL_beginav_save);
3280af22 924 SvREFCNT_dec(PL_endav);
7d30b5c4 925 SvREFCNT_dec(PL_checkav);
ece599bd 926 SvREFCNT_dec(PL_checkav_save);
3280af22 927 SvREFCNT_dec(PL_initav);
7d49f689
NC
928 PL_beginav = NULL;
929 PL_beginav_save = NULL;
930 PL_endav = NULL;
931 PL_checkav = NULL;
932 PL_checkav_save = NULL;
933 PL_initav = NULL;
5618dfe8 934
8ebc5c01 935 /* shortcuts just get cleared */
a0714e2c
SS
936 PL_envgv = NULL;
937 PL_incgv = NULL;
938 PL_hintgv = NULL;
939 PL_errgv = NULL;
940 PL_argvgv = NULL;
941 PL_argvoutgv = NULL;
942 PL_stdingv = NULL;
943 PL_stderrgv = NULL;
944 PL_last_in_gv = NULL;
945 PL_replgv = NULL;
946 PL_DBgv = NULL;
947 PL_DBline = NULL;
948 PL_DBsub = NULL;
949 PL_DBsingle = NULL;
950 PL_DBtrace = NULL;
951 PL_DBsignal = NULL;
952 PL_DBassertion = NULL;
601f1833 953 PL_DBcv = NULL;
7d49f689 954 PL_dbargs = NULL;
5c284bb0 955 PL_debstash = NULL;
8ebc5c01 956
7a1c5554 957 SvREFCNT_dec(PL_argvout_stack);
7d49f689 958 PL_argvout_stack = NULL;
8ebc5c01 959
5c831c24 960 SvREFCNT_dec(PL_modglobal);
5c284bb0 961 PL_modglobal = NULL;
5c831c24 962 SvREFCNT_dec(PL_preambleav);
7d49f689 963 PL_preambleav = NULL;
5c831c24 964 SvREFCNT_dec(PL_subname);
a0714e2c 965 PL_subname = NULL;
5c831c24 966 SvREFCNT_dec(PL_linestr);
a0714e2c 967 PL_linestr = NULL;
ca0c25f6 968#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 969 SvREFCNT_dec(PL_pidstatus);
5c284bb0 970 PL_pidstatus = NULL;
ca0c25f6 971#endif
5c831c24 972 SvREFCNT_dec(PL_toptarget);
a0714e2c 973 PL_toptarget = NULL;
5c831c24 974 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
975 PL_bodytarget = NULL;
976 PL_formtarget = NULL;
5c831c24 977
d33b2eba 978 /* free locale stuff */
b9582b6a 979#ifdef USE_LOCALE_COLLATE
d33b2eba 980 Safefree(PL_collation_name);
bd61b366 981 PL_collation_name = NULL;
b9582b6a 982#endif
d33b2eba 983
b9582b6a 984#ifdef USE_LOCALE_NUMERIC
d33b2eba 985 Safefree(PL_numeric_name);
bd61b366 986 PL_numeric_name = NULL;
a453c169 987 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 988 PL_numeric_radix_sv = NULL;
b9582b6a 989#endif
d33b2eba 990
5c831c24
GS
991 /* clear utf8 character classes */
992 SvREFCNT_dec(PL_utf8_alnum);
993 SvREFCNT_dec(PL_utf8_alnumc);
994 SvREFCNT_dec(PL_utf8_ascii);
995 SvREFCNT_dec(PL_utf8_alpha);
996 SvREFCNT_dec(PL_utf8_space);
997 SvREFCNT_dec(PL_utf8_cntrl);
998 SvREFCNT_dec(PL_utf8_graph);
999 SvREFCNT_dec(PL_utf8_digit);
1000 SvREFCNT_dec(PL_utf8_upper);
1001 SvREFCNT_dec(PL_utf8_lower);
1002 SvREFCNT_dec(PL_utf8_print);
1003 SvREFCNT_dec(PL_utf8_punct);
1004 SvREFCNT_dec(PL_utf8_xdigit);
1005 SvREFCNT_dec(PL_utf8_mark);
1006 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1007 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1008 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1009 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1010 SvREFCNT_dec(PL_utf8_idstart);
1011 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1012 PL_utf8_alnum = NULL;
1013 PL_utf8_alnumc = NULL;
1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
5c831c24 1032
971a9dd3
GS
1033 if (!specialWARN(PL_compiling.cop_warnings))
1034 SvREFCNT_dec(PL_compiling.cop_warnings);
a0714e2c 1035 PL_compiling.cop_warnings = NULL;
ac27b0f5
NIS
1036 if (!specialCopIO(PL_compiling.cop_io))
1037 SvREFCNT_dec(PL_compiling.cop_io);
a0714e2c 1038 PL_compiling.cop_io = NULL;
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22
NIS
1044 hv = PL_defstash;
1045 PL_defstash = 0;
a0d0e21e 1046 SvREFCNT_dec(hv);
5c831c24 1047 SvREFCNT_dec(PL_curstname);
a0714e2c 1048 PL_curstname = NULL;
a0d0e21e 1049
5a844595
GS
1050 /* clear queued errors */
1051 SvREFCNT_dec(PL_errors);
a0714e2c 1052 PL_errors = NULL;
5a844595 1053
a0d0e21e 1054 FREETMPS;
0453d815 1055 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1056 if (PL_scopestack_ix != 0)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1058 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1059 (long)PL_scopestack_ix);
1060 if (PL_savestack_ix != 0)
9014280d 1061 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1062 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1063 (long)PL_savestack_ix);
1064 if (PL_tmps_floor != -1)
9014280d 1065 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1066 (long)PL_tmps_floor + 1);
a0d0e21e 1067 if (cxstack_ix != -1)
9014280d 1068 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1069 (long)cxstack_ix + 1);
a0d0e21e 1070 }
8990e307
LW
1071
1072 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 1073 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 1074 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
1077 while (PL_sv_count > 2 && sv_clean_all())
1078 ;
1079
d33b2eba
GS
1080 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
1081 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
1082 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
1083 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 1084
d4777f27
GS
1085 AvREAL_off(PL_fdpid); /* no surviving entries */
1086 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1087 PL_fdpid = NULL;
d33b2eba 1088
6c644e78
GS
1089#ifdef HAVE_INTERP_INTERN
1090 sys_intern_clear();
1091#endif
1092
6e72f9df
PP
1093 /* Destruct the global string table. */
1094 {
1095 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1096 * so that sv_free() won't fail on them.
80459961
NC
1097 * Now that the global string table is using a single hunk of memory
1098 * for both HE and HEK, we either need to explicitly unshare it the
1099 * correct way, or actually free things here.
6e72f9df 1100 */
80459961
NC
1101 I32 riter = 0;
1102 const I32 max = HvMAX(PL_strtab);
c4420975 1103 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1104 HE *hent = array[0];
1105
6e72f9df 1106 for (;;) {
0453d815 1107 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1108 HE * const next = HeNEXT(hent);
9014280d 1109 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1110 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1111 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1112 Safefree(hent);
1113 hent = next;
6e72f9df
PP
1114 }
1115 if (!hent) {
1116 if (++riter > max)
1117 break;
1118 hent = array[riter];
1119 }
1120 }
80459961
NC
1121
1122 Safefree(array);
1123 HvARRAY(PL_strtab) = 0;
1124 HvTOTALKEYS(PL_strtab) = 0;
1125 HvFILL(PL_strtab) = 0;
6e72f9df 1126 }
3280af22 1127 SvREFCNT_dec(PL_strtab);
6e72f9df 1128
e652bb2f 1129#ifdef USE_ITHREADS
c21d1a0f 1130 /* free the pointer tables used for cloning */
a0739874 1131 ptr_table_free(PL_ptr_table);
bf9cdc68 1132 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1133#endif
a0739874 1134
d33b2eba
GS
1135 /* free special SVs */
1136
1137 SvREFCNT(&PL_sv_yes) = 0;
1138 sv_clear(&PL_sv_yes);
1139 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1140 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1141
1142 SvREFCNT(&PL_sv_no) = 0;
1143 sv_clear(&PL_sv_no);
1144 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1145 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1146
9f375a43
DM
1147 {
1148 int i;
1149 for (i=0; i<=2; i++) {
1150 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1151 sv_clear(PERL_DEBUG_PAD(i));
1152 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1153 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1154 }
1155 }
1156
0453d815 1157 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1158 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1159
eba0f806
DM
1160#ifdef DEBUG_LEAKING_SCALARS
1161 if (PL_sv_count != 0) {
1162 SV* sva;
1163 SV* sv;
1164 register SV* svend;
1165
1166 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
1167 svend = &sva[SvREFCNT(sva)];
1168 for (sv = sva + 1; sv < svend; ++sv) {
1169 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1170 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1171 " flags=0x%"UVxf
fd0854ff
DM
1172 " refcnt=%"UVuf pTHX__FORMAT "\n"
1173 "\tallocated at %s:%d %s %s%s\n",
1174 sv, sv->sv_flags, sv->sv_refcnt pTHX__VALUE,
1175 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1176 sv->sv_debug_line,
1177 sv->sv_debug_inpad ? "for" : "by",
1178 sv->sv_debug_optype ?
1179 PL_op_name[sv->sv_debug_optype]: "(none)",
1180 sv->sv_debug_cloned ? " (cloned)" : ""
1181 );
2aa47728 1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1183 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1184#endif
eba0f806
DM
1185 }
1186 }
1187 }
1188 }
2aa47728
NC
1189#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1190 {
1191 int status;
1192 fd_set rset;
1193 /* Wait for up to 4 seconds for child to terminate.
1194 This seems to be the least effort way of timing out on reaping
1195 its exit status. */
1196 struct timeval waitfor = {4, 0};
41e4abd8 1197 int sock = PL_dumper_fd;
2aa47728
NC
1198
1199 shutdown(sock, 1);
1200 FD_ZERO(&rset);
1201 FD_SET(sock, &rset);
1202 select(sock + 1, &rset, NULL, NULL, &waitfor);
1203 waitpid(child, &status, WNOHANG);
1204 close(sock);
1205 }
1206#endif
eba0f806 1207#endif
bf9cdc68 1208 PL_sv_count = 0;
eba0f806
DM
1209
1210
56a2bab7 1211#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1214#endif
1215
9f4bd222 1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1217 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1218 for no arg - and will try and SvREFCNT_dec it.
1219 */
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1222
3280af22 1223 Safefree(PL_origfilename);
bd61b366 1224 PL_origfilename = NULL;
3280af22 1225 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1226 PL_reg_start_tmp = (char**)NULL;
1227 PL_reg_start_tmpl = 0;
43c5f42d 1228 Safefree(PL_reg_curpm);
82ba1be6 1229 Safefree(PL_reg_poscache);
dd28f7bb 1230 free_tied_hv_pool();
3280af22 1231 Safefree(PL_op_mask);
cf36064f 1232 Safefree(PL_psig_ptr);
bf9cdc68 1233 PL_psig_ptr = (SV**)NULL;
cf36064f 1234 Safefree(PL_psig_name);
bf9cdc68 1235 PL_psig_name = (SV**)NULL;
2c2666fc 1236 Safefree(PL_bitcount);
bd61b366 1237 PL_bitcount = NULL;
ce08f86c 1238 Safefree(PL_psig_pend);
bf9cdc68 1239 PL_psig_pend = (int*)NULL;
a0714e2c 1240 PL_formfeed = NULL;
6e72f9df 1241 nuke_stacks();
bf9cdc68
RG
1242 PL_tainting = FALSE;
1243 PL_taint_warn = FALSE;
3280af22 1244 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1245 PL_debug = 0;
ac27b0f5 1246
a0d0e21e 1247 DEBUG_P(debprofdump());
d33b2eba 1248
e5dd39fc 1249#ifdef USE_REENTRANT_API
10bc17b6 1250 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1251#endif
1252
612f20c3
GS
1253 sv_free_arenas();
1254
fc36a67e
PP
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1256
3280af22 1257 if (PL_mess_sv) {
f350b448
NC
1258 /* we know that type == SVt_PVMG */
1259
9c63abab 1260 /* it could have accumulated taint magic */
f350b448
NC
1261 MAGIC* mg;
1262 MAGIC* moremagic;
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 && mg->mg_len >= 0)
1267 Safefree(mg->mg_ptr);
1268 Safefree(mg);
9c63abab 1269 }
f350b448 1270
fc36a67e 1271 /* we know that type >= SVt_PV */
8bd4d4c5 1272 SvPV_free(PL_mess_sv);
3280af22
NIS
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
a0714e2c 1275 PL_mess_sv = NULL;
fc36a67e 1276 }
37038d91 1277 return STATUS_EXIT;
79072805
LW
1278}
1279
954c1994
GS
1280/*
1281=for apidoc perl_free
1282
1283Releases a Perl interpreter. See L<perlembed>.
1284
1285=cut
1286*/
1287
79072805 1288void
0cb96387 1289perl_free(pTHXx)
79072805 1290{
7cb608b5 1291#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1292 {
1293 /*
1294 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1295 * value as we're probably hunting memory leaks then
1296 */
1297 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1298 if (!s || atoi(s) == 0) {
1299 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1300 thread at thread exit. */
1301 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1302 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
1303 }
1304 }
7cb608b5
NC
1305#endif
1306
acfe0abc 1307#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1308# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1309 {
acfe0abc 1310# ifdef NETWARE
7af12a34 1311 void *host = nw_internal_host;
acfe0abc 1312# else
7af12a34 1313 void *host = w32_internal_host;
acfe0abc 1314# endif
7af12a34 1315 PerlMem_free(aTHXx);
acfe0abc 1316# ifdef NETWARE
7af12a34 1317 nw_delete_internal_host(host);
acfe0abc 1318# else
7af12a34 1319 win32_delete_internal_host(host);
acfe0abc 1320# endif
7af12a34 1321 }
1c0ca838
GS
1322# else
1323 PerlMem_free(aTHXx);
1324# endif
acfe0abc
GS
1325#else
1326 PerlMem_free(aTHXx);
76e3520e 1327#endif
79072805
LW
1328}
1329
b7f7fff6 1330#if defined(USE_ITHREADS)
aebd1ac7
GA
1331/* provide destructors to clean up the thread key when libperl is unloaded */
1332#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1333
826955bd 1334#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7
GA
1335#pragma fini "perl_fini"
1336#endif
1337
0dbb1585
AL
1338static void
1339#if defined(__GNUC__)
1340__attribute__((destructor))
aebd1ac7 1341#endif
de009b76 1342perl_fini(void)
aebd1ac7 1343{
27da23d5 1344 dVAR;
aebd1ac7
GA
1345 if (PL_curinterp)
1346 FREE_THREAD_KEY;
1347}
1348
1349#endif /* WIN32 */
1350#endif /* THREADS */
1351
4b556e6c 1352void
864dbfa3 1353Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1354{
97aff369 1355 dVAR;
3280af22
NIS
1356 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1357 PL_exitlist[PL_exitlistlen].fn = fn;
1358 PL_exitlist[PL_exitlistlen].ptr = ptr;
1359 ++PL_exitlistlen;
4b556e6c
JD
1360}
1361
56cf6df8
RGS
1362#ifdef HAS_PROCSELFEXE
1363/* This is a function so that we don't hold on to MAXPATHLEN
1364 bytes of stack longer than necessary
1365 */
1366STATIC void
e1ec3a88 1367S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1368{
1369 char buf[MAXPATHLEN];
1370 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1371
1372 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1373 includes a spurious NUL which will cause $^X to fail in system
1374 or backticks (this will prevent extensions from being built and
1375 many tests from working). readlink is not meant to add a NUL.
1376 Normal readlink works fine.
1377 */
1378 if (len > 0 && buf[len-1] == '\0') {
1379 len--;
1380 }
1381
1382 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1383 returning the text "unknown" from the readlink rather than the path
1384 to the executable (or returning an error from the readlink). Any valid
1385 path has a '/' in it somewhere, so use that to validate the result.
1386 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1387 */
1388 if (len > 0 && memchr(buf, '/', len)) {
1389 sv_setpvn(sv,buf,len);
1390 }
1391 else {
1392 sv_setpv(sv,arg0);
1393 }
1394}
1395#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1396
1397STATIC void
1398S_set_caret_X(pTHX) {
97aff369 1399 dVAR;
fafc274c 1400 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1401 if (tmpgv) {
1402#ifdef HAS_PROCSELFEXE
1403 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1404#else
1405#ifdef OS2
c69033f2 1406 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1407#else
c69033f2 1408 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1409#endif
1410#endif
1411 }
1412}
1413
954c1994
GS
1414/*
1415=for apidoc perl_parse
1416
1417Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1418
1419=cut
1420*/
1421
79072805 1422int
0cb96387 1423perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1424{
27da23d5 1425 dVAR;
6224f72b 1426 I32 oldscope;
6224f72b 1427 int ret;
db36c5a1 1428 dJMPENV;
8d063cd8 1429
9d4ba2ae
AL
1430 PERL_UNUSED_VAR(my_perl);
1431
a687059c
LW
1432#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1433#ifdef IAMSUID
1434#undef IAMSUID
cea2e8a9 1435 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c 1436setuid perl scripts securely.\n");
ae3f3efd 1437#endif /* IAMSUID */
a687059c
LW
1438#endif
1439
b0891165
JH
1440#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1441 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1442 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1443 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1444 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1445 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1446 if (!PL_rehash_seed_set)
1447 PL_rehash_seed = get_hash_seed();
b0891165 1448 {
9d4ba2ae 1449 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1450
1b6737cc
AL
1451 if (s && (atoi(s) == 1))
1452 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1453 }
1454#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1455
3280af22 1456 PL_origargc = argc;
e2975953 1457 PL_origargv = argv;
a0d0e21e 1458
a2722ac9
GA
1459 if (PL_origalen != 0) {
1460 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1461 }
1462 else {
3cb9023d
JH
1463 /* Set PL_origalen be the sum of the contiguous argv[]
1464 * elements plus the size of the env in case that it is
e9137a8e 1465 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1466 * as the maximum modifiable length of $0. In the worst case
1467 * the area we are able to modify is limited to the size of
43c32782 1468 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1469 * --jhi */
e1ec3a88 1470 const char *s = NULL;
54bfe034 1471 int i;
1b6737cc 1472 const UV mask =
7d8e7db3 1473 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1474 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1475 const UV aligned =
43c32782
JH
1476 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1477
1478 /* See if all the arguments are contiguous in memory. Note
1479 * that 'contiguous' is a loose term because some platforms
1480 * align the argv[] and the envp[]. If the arguments look
1481 * like non-aligned, assume that they are 'strictly' or
1482 * 'traditionally' contiguous. If the arguments look like
1483 * aligned, we just check that they are within aligned
1484 * PTRSIZE bytes. As long as no system has something bizarre
1485 * like the argv[] interleaved with some other data, we are
1486 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1487 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1488 while (*s) s++;
1489 for (i = 1; i < PL_origargc; i++) {
1490 if ((PL_origargv[i] == s + 1
43c32782 1491#ifdef OS2
c8941eeb 1492 || PL_origargv[i] == s + 2
43c32782 1493#endif
c8941eeb
JH
1494 )
1495 ||
1496 (aligned &&
1497 (PL_origargv[i] > s &&
1498 PL_origargv[i] <=
1499 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1500 )
1501 {
1502 s = PL_origargv[i];
1503 while (*s) s++;
1504 }
1505 else
1506 break;
54bfe034 1507 }
54bfe034 1508 }
3cb9023d 1509 /* Can we grab env area too to be used as the area for $0? */
2d2af554 1510 if (s && PL_origenviron) {
43c32782
JH
1511 if ((PL_origenviron[0] == s + 1
1512#ifdef OS2
1513 || (PL_origenviron[0] == s + 9 && (s += 8))
1514#endif
1515 )
1516 ||
1517 (aligned &&
1518 (PL_origenviron[0] > s &&
1519 PL_origenviron[0] <=
1520 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1521 )
1522 {
1523#ifndef OS2
1524 s = PL_origenviron[0];
1525 while (*s) s++;
1526#endif
bd61b366 1527 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1528 /* Force copy of environment. */
1529 for (i = 1; PL_origenviron[i]; i++) {
1530 if (PL_origenviron[i] == s + 1
1531 ||
1532 (aligned &&
1533 (PL_origenviron[i] > s &&
1534 PL_origenviron[i] <=
1535 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1536 )
1537 {
1538 s = PL_origenviron[i];
1539 while (*s) s++;
1540 }
1541 else
1542 break;
54bfe034 1543 }
43c32782 1544 }
54bfe034 1545 }
2d2af554 1546 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1547 }
1548
3280af22 1549 if (PL_do_undump) {
a0d0e21e
LW
1550
1551 /* Come here if running an undumped a.out. */
1552
3280af22
NIS
1553 PL_origfilename = savepv(argv[0]);
1554 PL_do_undump = FALSE;
a0d0e21e 1555 cxstack_ix = -1; /* start label stack again */
748a9306 1556 init_ids();
b7975bdd
NC
1557 assert (!PL_tainted);
1558 TAINT;
1559 S_set_caret_X(aTHX);
1560 TAINT_NOT;
a0d0e21e
LW
1561 init_postdump_symbols(argc,argv,env);
1562 return 0;
1563 }
1564
3280af22 1565 if (PL_main_root) {
3280af22 1566 op_free(PL_main_root);
5f66b61c 1567 PL_main_root = NULL;
ff0cee69 1568 }
5f66b61c 1569 PL_main_start = NULL;
3280af22 1570 SvREFCNT_dec(PL_main_cv);
601f1833 1571 PL_main_cv = NULL;
79072805 1572
3280af22
NIS
1573 time(&PL_basetime);
1574 oldscope = PL_scopestack_ix;
599cee73 1575 PL_dowarn = G_WARN_OFF;
f86702cc 1576
14dd3ad8 1577 JMPENV_PUSH(ret);
6224f72b 1578 switch (ret) {
312caa8e 1579 case 0:
14dd3ad8 1580 parse_body(env,xsinit);
7d30b5c4
GS
1581 if (PL_checkav)
1582 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1583 ret = 0;
1584 break;
6224f72b
GS
1585 case 1:
1586 STATUS_ALL_FAILURE;
1587 /* FALL THROUGH */
1588 case 2:
1589 /* my_exit() was called */
3280af22 1590 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1591 LEAVE;
1592 FREETMPS;
3280af22 1593 PL_curstash = PL_defstash;
7d30b5c4
GS
1594 if (PL_checkav)
1595 call_list(oldscope, PL_checkav);
37038d91 1596 ret = STATUS_EXIT;
14dd3ad8 1597 break;
6224f72b 1598 case 3:
bf49b057 1599 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1600 ret = 1;
1601 break;
6224f72b 1602 }
14dd3ad8
GS
1603 JMPENV_POP;
1604 return ret;
1605}
1606
312caa8e 1607STATIC void *
14dd3ad8 1608S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1609{
27da23d5 1610 dVAR;
312caa8e 1611 int argc = PL_origargc;
8f42b153 1612 char **argv = PL_origargv;
e1ec3a88 1613 const char *scriptname = NULL;
312caa8e 1614 VOL bool dosearch = FALSE;
e1ec3a88 1615 const char *validarg = "";
312caa8e
CS
1616 register SV *sv;
1617 register char *s;
bd61b366 1618 const char *cddir = NULL;
ab019eaa 1619#ifdef USE_SITECUSTOMIZE
20ef40cf 1620 bool minus_f = FALSE;
ab019eaa 1621#endif
312caa8e 1622
3280af22 1623 sv_setpvn(PL_linestr,"",0);
396482e1 1624 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1625 SAVEFREESV(sv);
1626 init_main_stash();
54310121 1627
6224f72b
GS
1628 for (argc--,argv++; argc > 0; argc--,argv++) {
1629 if (argv[0][0] != '-' || !argv[0][1])
1630 break;
1631#ifdef DOSUID
1632 if (*validarg)
1633 validarg = " PHOOEY ";
1634 else
1635 validarg = argv[0];
ae3f3efd
PS
1636 /*
1637 * Can we rely on the kernel to start scripts with argv[1] set to
1638 * contain all #! line switches (the whole line)? (argv[0] is set to
1639 * the interpreter name, argv[2] to the script name; argv[3] and
1640 * above may contain other arguments.)
1641 */
13281fa4 1642#endif
6224f72b
GS
1643 s = argv[0]+1;
1644 reswitch:
1645 switch (*s) {
729a02f2 1646 case 'C':
1d5472a9
GS
1647#ifndef PERL_STRICT_CR
1648 case '\r':
1649#endif
6224f72b
GS
1650 case ' ':
1651 case '0':
1652 case 'F':
1653 case 'a':
1654 case 'c':
1655 case 'd':
1656 case 'D':
1657 case 'h':
1658 case 'i':
1659 case 'l':
1660 case 'M':
1661 case 'm':
1662 case 'n':
1663 case 'p':
1664 case 's':
1665 case 'u':
1666 case 'U':
1667 case 'v':
599cee73
PM
1668 case 'W':
1669 case 'X':
6224f72b 1670 case 'w':
06492da6 1671 case 'A':
97bd5664 1672 if ((s = moreswitches(s)))
6224f72b
GS
1673 goto reswitch;
1674 break;
33b78306 1675
1dbad523 1676 case 't':
22f7c9c9 1677 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1678 if( !PL_tainting ) {
1679 PL_taint_warn = TRUE;
1680 PL_tainting = TRUE;
1681 }
1682 s++;
1683 goto reswitch;
6224f72b 1684 case 'T':
22f7c9c9 1685 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1686 PL_tainting = TRUE;
317ea90d 1687 PL_taint_warn = FALSE;
6224f72b
GS
1688 s++;
1689 goto reswitch;
f86702cc 1690
bc9b29db
RH
1691 case 'E':
1692 PL_minus_E = TRUE;
1693 /* FALL THROUGH */
6224f72b 1694 case 'e':
bf4acbe4
GS
1695#ifdef MACOS_TRADITIONAL
1696 /* ignore -e for Dev:Pseudo argument */
1697 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1698 break;
bf4acbe4 1699#endif
a52eba0e 1700 forbid_setid('e', -1);
3280af22 1701 if (!PL_e_script) {
396482e1 1702 PL_e_script = newSVpvs("");
0cb96387 1703 filter_add(read_e_script, NULL);
6224f72b
GS
1704 }
1705 if (*++s)
3280af22 1706 sv_catpv(PL_e_script, s);
6224f72b 1707 else if (argv[1]) {
3280af22 1708 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1709 argc--,argv++;
1710 }
1711 else
bc9b29db 1712 Perl_croak(aTHX_ "No code specified for -%c", *s);
396482e1 1713 sv_catpvs(PL_e_script, "\n");
6224f72b 1714 break;
afe37c7d 1715
20ef40cf 1716 case 'f':
f5542d3a 1717#ifdef USE_SITECUSTOMIZE
20ef40cf 1718 minus_f = TRUE;
f5542d3a 1719#endif
20ef40cf
GA
1720 s++;
1721 goto reswitch;
1722
6224f72b 1723 case 'I': /* -I handled both here and in moreswitches() */
a52eba0e 1724 forbid_setid('I', -1);
bd61b366 1725 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1726 argc--,argv++;
1727 }
6224f72b 1728 if (s && *s) {
0df16ed7 1729 STRLEN len = strlen(s);
aec46f14 1730 const char * const p = savepvn(s, len);
88fe16b2 1731 incpush(p, TRUE, TRUE, FALSE, FALSE);
396482e1 1732 sv_catpvs(sv, "-I");
0df16ed7 1733 sv_catpvn(sv, p, len);
396482e1 1734 sv_catpvs(sv, " ");
6224f72b 1735 Safefree(p);
0df16ed7
GS
1736 }
1737 else
a67e862a 1738 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1739 break;
1740 case 'P':
a52eba0e 1741 forbid_setid('P', -1);
3280af22 1742 PL_preprocess = TRUE;
6224f72b
GS
1743 s++;
1744 goto reswitch;
1745 case 'S':
a52eba0e 1746 forbid_setid('S', -1);
6224f72b
GS
1747 dosearch = TRUE;
1748 s++;
1749 goto reswitch;
1750 case 'V':
7edfd0ef
NC
1751 {
1752 SV *opts_prog;
1753
1754 if (!PL_preambleav)
1755 PL_preambleav = newAV();
1756 av_push(PL_preambleav,
396482e1 1757 newSVpvs("use Config;"));
7edfd0ef
NC
1758 if (*++s != ':') {
1759 STRLEN opts;
1760
396482e1 1761 opts_prog = newSVpvs("print Config::myconfig(),");
6224f72b 1762#ifdef VMS
396482e1 1763 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1764#else
396482e1 1765 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1766#endif
7edfd0ef 1767 opts = SvCUR(opts_prog);
efcaa95b 1768
9cd7d3f2 1769 Perl_sv_catpv(aTHX_ opts_prog,"\" Compile-time options:"
6224f72b 1770# ifdef DEBUGGING
e2e4dbf1 1771 " DEBUGGING"
6224f72b 1772# endif
4f185743
NC
1773# ifdef DEBUG_LEAKING_SCALARS
1774 " DEBUG_LEAKING_SCALARS"
1775# endif
85e1fcb9 1776# ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
e2e4dbf1 1777 " DEBUG_LEAKING_SCALARS_FORK_DUMP"
85e1fcb9
SH
1778# endif
1779# ifdef FAKE_THREADS
e2e4dbf1 1780 " FAKE_THREADS"
85e1fcb9 1781# endif
6224f72b 1782# ifdef MULTIPLICITY
e2e4dbf1 1783 " MULTIPLICITY"
6224f72b 1784# endif
85e1fcb9 1785# ifdef MYMALLOC
e2e4dbf1 1786 " MYMALLOC"
85e1fcb9 1787# endif
3bcf5ed8
SP
1788# ifdef NO_MATHOMS
1789 " NO_MATHOMS"
1790# endif
85e1fcb9 1791# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1792 " PERL_DONT_CREATE_GVSV"
85e1fcb9
SH
1793# endif
1794# ifdef PERL_GLOBAL_STRUCT
e2e4dbf1 1795 " PERL_GLOBAL_STRUCT"
85e1fcb9
SH
1796# endif
1797# ifdef PERL_IMPLICIT_CONTEXT
e2e4dbf1 1798 " PERL_IMPLICIT_CONTEXT"
85e1fcb9
SH
1799# endif
1800# ifdef PERL_IMPLICIT_SYS
e2e4dbf1 1801 " PERL_IMPLICIT_SYS"
85e1fcb9 1802# endif
a724edfe
NC
1803# ifdef PERL_MAD
1804 " PERL_MAD"
1805# endif
85e1fcb9 1806# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1807 " PERL_MALLOC_WRAP"
85e1fcb9
SH
1808# endif
1809# ifdef PERL_NEED_APPCTX
e2e4dbf1 1810 " PERL_NEED_APPCTX"
85e1fcb9
SH
1811# endif
1812# ifdef PERL_NEED_TIMESBASE
e2e4dbf1 1813 " PERL_NEED_TIMESBASE"
85e1fcb9
SH
1814# endif
1815# ifdef PERL_OLD_COPY_ON_WRITE
e2e4dbf1 1816 " PERL_OLD_COPY_ON_WRITE"
85e1fcb9 1817# endif
9c0a4d5d
DM
1818# ifdef PERL_TRACK_MEMPOOL
1819 " PERL_TRACK_MEMPOOL"
1820# endif
417cd4a8
SP
1821# ifdef PERL_USE_SAFE_PUTENV
1822 " PERL_USE_SAFE_PUTENV"
1823# endif
ca0c25f6
NC
1824#ifdef PERL_USES_PL_PIDSTATUS
1825 " PERL_USES_PL_PIDSTATUS"
1826#endif
85e1fcb9 1827# ifdef PL_OP_SLAB_ALLOC
e2e4dbf1 1828 " PL_OP_SLAB_ALLOC"
85e1fcb9
SH
1829# endif
1830# ifdef THREADS_HAVE_PIDS
e2e4dbf1 1831 " THREADS_HAVE_PIDS"
85e1fcb9 1832# endif
85e1fcb9 1833# ifdef USE_64_BIT_ALL
e2e4dbf1 1834 " USE_64_BIT_ALL"
ac5e8965 1835# endif
10cc9d2a 1836# ifdef USE_64_BIT_INT
e2e4dbf1 1837 " USE_64_BIT_INT"
10cc9d2a 1838# endif
85e1fcb9 1839# ifdef USE_ITHREADS
e2e4dbf1 1840 " USE_ITHREADS"
85e1fcb9
SH
1841# endif
1842# ifdef USE_LARGE_FILES
e2e4dbf1 1843 " USE_LARGE_FILES"
ac5e8965
JH
1844# endif
1845# ifdef USE_LONG_DOUBLE
e2e4dbf1 1846 " USE_LONG_DOUBLE"
ac5e8965 1847# endif
85e1fcb9 1848# ifdef USE_PERLIO
e2e4dbf1 1849 " USE_PERLIO"
53430762 1850# endif
85e1fcb9 1851# ifdef USE_REENTRANT_API
e2e4dbf1 1852 " USE_REENTRANT_API"
85e1fcb9
SH
1853# endif
1854# ifdef USE_SFIO
e2e4dbf1 1855 " USE_SFIO"
ac5e8965 1856# endif
20ef40cf 1857# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1858 " USE_SITECUSTOMIZE"
20ef40cf 1859# endif
85e1fcb9 1860# ifdef USE_SOCKS
e2e4dbf1 1861 " USE_SOCKS"
b363f7ed 1862# endif
e2e4dbf1 1863 );
efcaa95b 1864
7edfd0ef
NC
1865 while (SvCUR(opts_prog) > opts+76) {
1866 /* find last space after "options: " and before col 76
1867 */
efcaa95b 1868
7edfd0ef 1869 const char *space;
c4420975 1870 char * const pv = SvPV_nolen(opts_prog);
7edfd0ef
NC
1871 const char c = pv[opts+76];
1872 pv[opts+76] = '\0';
1873 space = strrchr(pv+opts+26, ' ');
1874 pv[opts+76] = c;
1875 if (!space) break; /* "Can't happen" */
efcaa95b 1876
7edfd0ef 1877 /* break the line before that space */
efcaa95b 1878
7edfd0ef 1879 opts = space - pv;
89529cee 1880 Perl_sv_insert(aTHX_ opts_prog, opts, 0,
6a245ed1 1881 STR_WITH_LEN("\\n "));
7edfd0ef 1882 }
efcaa95b 1883
396482e1 1884 sv_catpvs(opts_prog,"\\n\",");
b363f7ed 1885
6224f72b 1886#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1887 if (LOCAL_PATCH_COUNT > 0) {
1888 int i;
396482e1 1889 sv_catpvs(opts_prog,
7edfd0ef
NC
1890 "\" Locally applied patches:\\n\",");
1891 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1892 if (PL_localpatches[i])
1893 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1894 0, PL_localpatches[i], 0);
1895 }
6224f72b 1896 }
6224f72b 1897#endif
7edfd0ef
NC
1898 Perl_sv_catpvf(aTHX_ opts_prog,
1899 "\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1900#ifdef __DATE__
1901# ifdef __TIME__
7edfd0ef
NC
1902 Perl_sv_catpvf(aTHX_ opts_prog,
1903 ",\" Compiled at %s %s\\n\"",__DATE__,
1904 __TIME__);
6224f72b 1905# else
7edfd0ef
NC
1906 Perl_sv_catpvf(aTHX_ opts_prog,",\" Compiled on %s\\n\"",
1907 __DATE__);
6224f72b
GS
1908# endif
1909#endif
396482e1 1910 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1911 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1912 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1913#ifdef __CYGWIN__
396482e1 1914 sv_catpvs(opts_prog,
7edfd0ef 1915 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1916#endif
396482e1 1917 sv_catpvs(opts_prog,
7edfd0ef
NC
1918 "print \" \\%ENV:\\n @env\\n\" if @env;"
1919 "print \" \\@INC:\\n @INC\\n\";");
1920 }
1921 else {
1922 ++s;
1923 opts_prog = Perl_newSVpvf(aTHX_
1924 "Config::config_vars(qw%c%s%c)",
1925 0, s, 0);
1926 s += strlen(s);
1927 }
1928 av_push(PL_preambleav, opts_prog);
1929 /* don't look for script or read stdin */
1930 scriptname = BIT_BUCKET;
1931 goto reswitch;
6224f72b 1932 }
6224f72b 1933 case 'x':
3280af22 1934 PL_doextract = TRUE;
6224f72b
GS
1935 s++;
1936 if (*s)
f4c556ac 1937 cddir = s;
6224f72b
GS
1938 break;
1939 case 0:
1940 break;
1941 case '-':
1942 if (!*++s || isSPACE(*s)) {
1943 argc--,argv++;
1944 goto switch_end;
1945 }
1946 /* catch use of gnu style long options */
1947 if (strEQ(s, "version")) {
dd374669 1948 s = (char *)"v";
6224f72b
GS
1949 goto reswitch;
1950 }
1951 if (strEQ(s, "help")) {
dd374669 1952 s = (char *)"h";
6224f72b
GS
1953 goto reswitch;
1954 }
1955 s--;
1956 /* FALL THROUGH */
1957 default:
cea2e8a9 1958 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1959 }
1960 }
6224f72b 1961 switch_end:
54310121 1962
f675dbe5
CB
1963 if (
1964#ifndef SECURE_INTERNAL_GETENV
1965 !PL_tainting &&
1966#endif
cf756827 1967 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1968 {
e1ec3a88 1969 const char *popt = s;
74288ac8
GS
1970 while (isSPACE(*s))
1971 s++;
317ea90d 1972 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1973 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1974 PL_tainting = TRUE;
317ea90d
MS
1975 PL_taint_warn = FALSE;
1976 }
74288ac8 1977 else {
bd61b366 1978 char *popt_copy = NULL;
74288ac8 1979 while (s && *s) {
4ea8f8fb 1980 char *d;
74288ac8
GS
1981 while (isSPACE(*s))
1982 s++;
1983 if (*s == '-') {
1984 s++;
1985 if (isSPACE(*s))
1986 continue;
1987 }
4ea8f8fb 1988 d = s;
74288ac8
GS
1989 if (!*s)
1990 break;
e4af53b0 1991 if (!strchr("CDIMUdmtwA", *s))
cea2e8a9 1992 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1993 while (++s && *s) {
1994 if (isSPACE(*s)) {
cf756827
GS
1995 if (!popt_copy) {
1996 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1997 s = popt_copy + (s - popt);
1998 d = popt_copy + (d - popt);
1999 }
4ea8f8fb
MS
2000 *s++ = '\0';
2001 break;
2002 }
2003 }
1c4db469 2004 if (*d == 't') {
317ea90d
MS
2005 if( !PL_tainting ) {
2006 PL_taint_warn = TRUE;
2007 PL_tainting = TRUE;
2008 }
1c4db469 2009 } else {
97bd5664 2010 moreswitches(d);
1c4db469 2011 }
6224f72b 2012 }
6224f72b
GS
2013 }
2014 }
a0d0e21e 2015
20ef40cf
GA
2016#ifdef USE_SITECUSTOMIZE
2017 if (!minus_f) {
2018 if (!PL_preambleav)
2019 PL_preambleav = newAV();
2020 av_unshift(PL_preambleav, 1);
2021 (void)av_store(PL_preambleav, 0, Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
2022 }
2023#endif
2024
317ea90d
MS
2025 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
2026 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
2027 }
2028
6224f72b
GS
2029 if (!scriptname)
2030 scriptname = argv[0];
3280af22 2031 if (PL_e_script) {
6224f72b
GS
2032 argc++,argv--;
2033 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2034 }
bd61b366 2035 else if (scriptname == NULL) {
6224f72b
GS
2036#ifdef MSDOS
2037 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2038 moreswitches("h");
6224f72b
GS
2039#endif
2040 scriptname = "-";
2041 }
2042
b7975bdd
NC
2043 /* Set $^X early so that it can be used for relocatable paths in @INC */
2044 assert (!PL_tainted);
2045 TAINT;
2046 S_set_caret_X(aTHX);
2047 TAINT_NOT;
6224f72b
GS
2048 init_perllib();
2049
a52eba0e
NC
2050 {
2051 int suidscript;
2052 const int fdscript
2053 = open_script(scriptname, dosearch, sv, &suidscript);
6224f72b 2054
a52eba0e 2055 validate_suid(validarg, scriptname, fdscript, suidscript);
6224f72b 2056
64ca3a65 2057#ifndef PERL_MICRO
a52eba0e
NC
2058# if defined(SIGCHLD) || defined(SIGCLD)
2059 {
2060# ifndef SIGCHLD
2061# define SIGCHLD SIGCLD
2062# endif
2063 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2064 if (sigstate == (Sighandler_t) SIG_IGN) {
2065 if (ckWARN(WARN_SIGNAL))
2066 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2067 "Can't ignore signal CHLD, forcing to default");
2068 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2069 }
0b5b802d 2070 }
a52eba0e 2071# endif
64ca3a65 2072#endif
0b5b802d 2073
a52eba0e 2074 if (PL_doextract
bf4acbe4 2075#ifdef MACOS_TRADITIONAL
a52eba0e 2076 || gMacPerl_AlwaysExtract
bf4acbe4 2077#endif
a52eba0e 2078 ) {
faef540c
NC
2079
2080 /* This will croak if suidscript is >= 0, as -x cannot be used with
2081 setuid scripts. */
2082 forbid_setid('x', suidscript);
2083 /* Hence you can't get here if suidscript >= 0 */
2084
2085 find_beginning();
a52eba0e
NC
2086 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2087 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2088 }
f4c556ac 2089 }
6224f72b 2090
561b68a9 2091 PL_main_cv = PL_compcv = (CV*)newSV(0);
3280af22
NIS
2092 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
2093 CvUNIQUE_on(PL_compcv);
2094
dd2155a4 2095 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2096
0c4f7ff0 2097 boot_core_PerlIO();
6224f72b 2098 boot_core_UNIVERSAL();
09bef843 2099 boot_core_xsutils();
6224f72b
GS
2100
2101 if (xsinit)
acfe0abc 2102 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2103#ifndef PERL_MICRO
d0d72822 2104#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2105 init_os_extras();
6224f72b 2106#endif
64ca3a65 2107#endif
6224f72b 2108
29209bc5 2109#ifdef USE_SOCKS
1b9c9cf5
DH
2110# ifdef HAS_SOCKS5_INIT
2111 socks5_init(argv[0]);
2112# else
29209bc5 2113 SOCKSinit(argv[0]);
1b9c9cf5 2114# endif
ac27b0f5 2115#endif
29209bc5 2116
6224f72b
GS
2117 init_predump_symbols();
2118 /* init_postdump_symbols not currently designed to be called */
2119 /* more than once (ENV isn't cleared first, for example) */
2120 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2121 if (!PL_do_undump)
6224f72b
GS
2122 init_postdump_symbols(argc,argv,env);
2123
27da23d5
JH
2124 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2125 * or explicitly in some platforms.
085a54d9 2126 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2127 * look like the user wants to use UTF-8. */
a0fd4948 2128#if defined(__SYMBIAN32__)
27da23d5
JH
2129 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2130#endif
06e66572
JH
2131 if (PL_unicode) {
2132 /* Requires init_predump_symbols(). */
a05d7ebb 2133 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2134 IO* io;
2135 PerlIO* fp;
2136 SV* sv;
2137
a05d7ebb 2138 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2139 * and the default open disciplines. */
a05d7ebb
JH
2140 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2141 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2142 (fp = IoIFP(io)))
2143 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2144 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2145 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2146 (fp = IoOFP(io)))
2147 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2148 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2149 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2150 (fp = IoOFP(io)))
2151 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2152 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2153 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2154 SVt_PV)))) {
a05d7ebb
JH
2155 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2156 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2157 if (in) {
2158 if (out)
2159 sv_setpvn(sv, ":utf8\0:utf8", 11);
2160 else
2161 sv_setpvn(sv, ":utf8\0", 6);
2162 }
2163 else if (out)
2164 sv_setpvn(sv, "\0:utf8", 6);
2165 SvSETMAGIC(sv);
2166 }
b310b053
JH
2167 }
2168 }
2169
4ffa73a3
JH
2170 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2171 if (strEQ(s, "unsafe"))
2172 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2173 else if (strEQ(s, "safe"))
2174 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2175 else
2176 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2177 }
2178
81d86705
NC
2179#ifdef PERL_MAD
2180 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2181 PL_madskills = 1;
2182 PL_minus_c = 1;
2183 if (!s || !s[0])
2184 PL_xmlfp = PerlIO_stdout();
2185 else {
2186 PL_xmlfp = PerlIO_open(s, "w");
2187 if (!PL_xmlfp)
2188 Perl_croak(aTHX_ "Can't open %s", s);
2189 }
2190 my_setenv("PERL_XMLDUMP", Nullch); /* hide from subprocs */
2191 }
2192 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2193 PL_madskills = atoi(s);
2194 my_setenv("PERL_MADSKILLS", Nullch); /* hide from subprocs */
2195 }
2196#endif
2197
6224f72b
GS
2198 init_lexer();
2199
2200 /* now parse the script */
2201
93189314 2202 SETERRNO(0,SS_NORMAL);
3280af22 2203 PL_error_count = 0;
bf4acbe4
GS
2204#ifdef MACOS_TRADITIONAL
2205 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
2206 if (PL_minus_c)
2207 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2208 else {
2209 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2210 MacPerl_MPWFileName(PL_origfilename));
2211 }
2212 }
2213#else
3280af22
NIS
2214 if (yyparse() || PL_error_count) {
2215 if (PL_minus_c)
cea2e8a9 2216 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2217 else {
cea2e8a9 2218 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2219 PL_origfilename);
6224f72b
GS
2220 }
2221 }
bf4acbe4 2222#endif
57843af0 2223 CopLINE_set(PL_curcop, 0);
3280af22
NIS
2224 PL_curstash = PL_defstash;
2225 PL_preprocess = FALSE;
2226 if (PL_e_script) {
2227 SvREFCNT_dec(PL_e_script);
a0714e2c 2228 PL_e_script = NULL;
6224f72b
GS
2229 }
2230
3280af22 2231 if (PL_do_undump)
6224f72b
GS
2232 my_unexec();
2233
57843af0
GS
2234 if (isWARN_ONCE) {
2235 SAVECOPFILE(PL_curcop);
2236 SAVECOPLINE(PL_curcop);
3280af22 2237 gv_check(PL_defstash);
57843af0 2238 }
6224f72b
GS
2239
2240 LEAVE;
2241 FREETMPS;
2242
2243#ifdef MYMALLOC
2244 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2245 dump_mstats("after compilation:");
2246#endif
2247
2248 ENTER;
3280af22 2249 PL_restartop = 0;
312caa8e 2250 return NULL;
6224f72b
GS
2251}
2252
954c1994
GS
2253/*
2254=for apidoc perl_run
2255
2256Tells a Perl interpreter to run. See L<perlembed>.
2257
2258=cut
2259*/
2260
6224f72b 2261int
0cb96387 2262perl_run(pTHXx)
6224f72b 2263{
97aff369 2264 dVAR;
6224f72b 2265 I32 oldscope;
14dd3ad8 2266 int ret = 0;
db36c5a1 2267 dJMPENV;
6224f72b 2268
96a5add6 2269 PERL_UNUSED_CONTEXT;
9d4ba2ae 2270
3280af22 2271 oldscope = PL_scopestack_ix;
96e176bf
CL
2272#ifdef VMS
2273 VMSISH_HUSHED = 0;
2274#endif
6224f72b 2275
14dd3ad8 2276 JMPENV_PUSH(ret);
6224f72b
GS
2277 switch (ret) {
2278 case 1:
2279 cxstack_ix = -1; /* start context stack again */
312caa8e 2280 goto redo_body;
14dd3ad8 2281 case 0: /* normal completion */
14dd3ad8
GS
2282 redo_body:
2283 run_body(oldscope);
14dd3ad8
GS
2284 /* FALL THROUGH */
2285 case 2: /* my_exit() */
3280af22 2286 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2287 LEAVE;
2288 FREETMPS;
3280af22 2289 PL_curstash = PL_defstash;
3a1ee7e8 2290 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2291 PL_endav && !PL_minus_c)
2292 call_list(oldscope, PL_endav);
6224f72b
GS
2293#ifdef MYMALLOC
2294 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2295 dump_mstats("after execution: ");
2296#endif
37038d91 2297 ret = STATUS_EXIT;
14dd3ad8 2298 break;
6224f72b 2299 case 3:
312caa8e
CS
2300 if (PL_restartop) {
2301 POPSTACK_TO(PL_mainstack);
2302 goto redo_body;
6224f72b 2303 }
bf49b057 2304 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2305 FREETMPS;
14dd3ad8
GS
2306 ret = 1;
2307 break;
6224f72b
GS
2308 }
2309
14dd3ad8
GS
2310 JMPENV_POP;
2311 return ret;
312caa8e
CS
2312}
2313
14dd3ad8 2314
dd374669 2315STATIC void
14dd3ad8
GS
2316S_run_body(pTHX_ I32 oldscope)
2317{
97aff369 2318 dVAR;
6224f72b 2319 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2320 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2321
3280af22 2322 if (!PL_restartop) {
81d86705
NC
2323#ifdef PERL_MAD
2324 if (PL_xmlfp) {
2325 xmldump_all();
2326 exit(0); /* less likely to core dump than my_exit(0) */
2327 }
2328#endif
6224f72b 2329 DEBUG_x(dump_all());
cf2782cd 2330#ifdef DEBUGGING
ecae49c0
NC
2331 if (!DEBUG_q_TEST)
2332 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2333#endif
b900a521
JH
2334 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
2335 PTR2UV(thr)));
6224f72b 2336
3280af22 2337 if (PL_minus_c) {
bf4acbe4 2338#ifdef MACOS_TRADITIONAL
e69a2255
JH
2339 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2340 (gMacPerl_ErrorFormat ? "# " : ""),
2341 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2342#else
bf49b057 2343 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2344#endif
6224f72b
GS
2345 my_exit(0);
2346 }
3280af22 2347 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2348 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2349 if (PL_initav)
2350 call_list(oldscope, PL_initav);
6224f72b
GS
2351 }
2352
2353 /* do it */
2354
3280af22 2355 if (PL_restartop) {
533c011a 2356 PL_op = PL_restartop;
3280af22 2357 PL_restartop = 0;
cea2e8a9 2358 CALLRUNOPS(aTHX);
6224f72b 2359 }
3280af22
NIS
2360 else if (PL_main_start) {
2361 CvDEPTH(PL_main_cv) = 1;
533c011a 2362 PL_op = PL_main_start;
cea2e8a9 2363 CALLRUNOPS(aTHX);
6224f72b 2364 }
f6b3007c
JH
2365 my_exit(0);
2366 /* NOTREACHED */
6224f72b
GS
2367}
2368
954c1994 2369/*
ccfc67b7
JH
2370=head1 SV Manipulation Functions
2371
954c1994
GS
2372=for apidoc p||get_sv
2373
2374Returns the SV of the specified Perl scalar. If C<create> is set and the
2375Perl variable does not exist then it will be created. If C<create> is not
2376set and the variable does not exist then NULL is returned.
2377
2378=cut
2379*/
2380
6224f72b 2381SV*
864dbfa3 2382Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
2383{
2384 GV *gv;
6224f72b
GS
2385 gv = gv_fetchpv(name, create, SVt_PV);
2386 if (gv)
2387 return GvSV(gv);
a0714e2c 2388 return NULL;
6224f72b
GS
2389}
2390
954c1994 2391/*
ccfc67b7
JH
2392=head1 Array Manipulation Functions
2393
954c1994
GS
2394=for apidoc p||get_av
2395
2396Returns the AV of the specified Perl array. If C<create> is set and the
2397Perl variable does not exist then it will be created. If C<create> is not
2398set and the variable does not exist then NULL is returned.
2399
2400=cut
2401*/
2402
6224f72b 2403AV*
864dbfa3 2404Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b 2405{
c4420975 2406 GV* const gv = gv_fetchpv(name, create, SVt_PVAV);
6224f72b
GS
2407 if (create)
2408 return GvAVn(gv);
2409 if (gv)
2410 return GvAV(gv);
7d49f689 2411 return NULL;
6224f72b
GS
2412}
2413
954c1994 2414/*
ccfc67b7
JH
2415=head1 Hash Manipulation Functions
2416
954c1994
GS
2417=for apidoc p||get_hv
2418
2419Returns the HV of the specified Perl hash. If C<create> is set and the
2420Perl variable does not exist then it will be created. If C<create> is not
2421set and the variable does not exist then NULL is returned.
2422
2423=cut
2424*/
2425
6224f72b 2426HV*
864dbfa3 2427Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 2428{
890ce7af 2429 GV* const gv = gv_fetchpv(name, create, SVt_PVHV);
a0d0e21e
LW
2430 if (create)
2431 return GvHVn(gv);
2432 if (gv)
2433 return GvHV(gv);
5c284bb0 2434 return NULL;
a0d0e21e
LW
2435}
2436
954c1994 2437/*
ccfc67b7
JH
2438=head1 CV Manipulation Functions
2439
954c1994
GS
2440=for apidoc p||get_cv
2441
2442Returns the CV of the specified Perl subroutine. If C<create> is set and
2443the Perl subroutine does not exist then it will be declared (which has the
2444same effect as saying C<sub name;>). If C<create> is not set and the
2445subroutine does not exist then NULL is returned.
2446
2447=cut
2448*/
2449
a0d0e21e 2450CV*
864dbfa3 2451Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e 2452{
c4420975 2453 GV* const gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 2454 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
2455 /* XXX this is probably not what they think they're getting.
2456 * It has the same effect as "sub name;", i.e. just a forward
2457 * declaration! */
8ebc5c01 2458 if (create && !GvCVu(gv))
774d564b 2459 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 2460 newSVOP(OP_CONST, 0, newSVpv(name,0)),
5f66b61c 2461 NULL, NULL);
a0d0e21e 2462 if (gv)
8ebc5c01 2463 return GvCVu(gv);
601f1833 2464 return NULL;
a0d0e21e
LW
2465}
2466
79072805
LW
2467/* Be sure to refetch the stack pointer after calling these routines. */
2468
954c1994 2469/*
ccfc67b7
JH
2470
2471=head1 Callback Functions
2472
954c1994
GS
2473=for apidoc p||call_argv
2474
2475Performs a callback to the specified Perl sub. See L<perlcall>.
2476
2477=cut
2478*/
2479
a0d0e21e 2480I32
8f42b153 2481Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2482
8ac85365
NIS
2483 /* See G_* flags in cop.h */
2484 /* null terminated arg list */
8990e307 2485{
97aff369 2486 dVAR;
a0d0e21e 2487 dSP;
8990e307 2488
924508f0 2489 PUSHMARK(SP);
a0d0e21e 2490 if (argv) {
8990e307 2491 while (*argv) {
a0d0e21e 2492 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
2493 argv++;
2494 }
a0d0e21e 2495 PUTBACK;
8990e307 2496 }
864dbfa3 2497 return call_pv(sub_name, flags);
8990e307
LW
2498}
2499
954c1994
GS
2500/*
2501=for apidoc p||call_pv
2502
2503Performs a callback to the specified Perl sub. See L<perlcall>.
2504
2505=cut
2506*/
2507
a0d0e21e 2508I32
864dbfa3 2509Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2510 /* name of the subroutine */
2511 /* See G_* flags in cop.h */
a0d0e21e 2512{
864dbfa3 2513 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
2514}
2515
954c1994
GS
2516/*
2517=for apidoc p||call_method
2518
2519Performs a callback to the specified Perl method. The blessed object must
2520be on the stack. See L<perlcall>.
2521
2522=cut
2523*/
2524
a0d0e21e 2525I32
864dbfa3 2526Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2527 /* name of the subroutine */
2528 /* See G_* flags in cop.h */
a0d0e21e 2529{
968b3946 2530 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2531}
2532
2533/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2534/*
2535=for apidoc p||call_sv
2536
2537Performs a callback to the Perl sub whose name is in the SV. See
2538L<perlcall>.
2539
2540=cut
2541*/
2542
a0d0e21e 2543I32
864dbfa3 2544Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 2545 /* See G_* flags in cop.h */
a0d0e21e 2546{
27da23d5 2547 dVAR; dSP;
a0d0e21e 2548 LOGOP myop; /* fake syntax tree node */
968b3946 2549 UNOP method_op;
aa689395 2550 I32 oldmark;
13689cfe 2551 volatile I32 retval = 0;
a0d0e21e 2552 I32 oldscope;
54310121 2553 bool oldcatch = CATCH_GET;
6224f72b 2554 int ret;
c4420975 2555 OP* const oldop = PL_op;
db36c5a1 2556 dJMPENV;
1e422769 2557
a0d0e21e
LW
2558 if (flags & G_DISCARD) {
2559 ENTER;
2560 SAVETMPS;
2561 }
2562
aa689395 2563 Zero(&myop, 1, LOGOP);
5f66b61c 2564 myop.op_next = NULL;
f51d4af5 2565 if (!(flags & G_NOARGS))
aa689395 2566 myop.op_flags |= OPf_STACKED;
54310121
PP
2567 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2568 (flags & G_ARRAY) ? OPf_WANT_LIST :
2569 OPf_WANT_SCALAR);
462e5cf6 2570 SAVEOP();
533c011a 2571 PL_op = (OP*)&myop;
aa689395 2572
3280af22
NIS
2573 EXTEND(PL_stack_sp, 1);
2574 *++PL_stack_sp = sv;
aa689395 2575 oldmark = TOPMARK;
3280af22 2576 oldscope = PL_scopestack_ix;
a0d0e21e 2577
3280af22 2578 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2579 /* Handle first BEGIN of -d. */
3280af22 2580 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2581 /* Try harder, since this may have been a sighandler, thus
2582 * curstash may be meaningless. */
3280af22 2583 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 2584 && !(flags & G_NODEBUG))
533c011a 2585 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2586
968b3946
GS
2587 if (flags & G_METHOD) {
2588 Zero(&method_op, 1, UNOP);
2589 method_op.op_next = PL_op;
2590 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2591 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 2592 PL_op = (OP*)&method_op;
968b3946
GS
2593 }
2594
312caa8e 2595 if (!(flags & G_EVAL)) {
0cdb2077 2596 CATCH_SET(TRUE);
14dd3ad8 2597 call_body((OP*)&myop, FALSE);
312caa8e 2598 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2599 CATCH_SET(oldcatch);
312caa8e
CS
2600 }
2601 else {
d78bda3d 2602 myop.op_other = (OP*)&myop;
3280af22 2603 PL_markstack_ptr--;
4633a7c4
LW
2604 /* we're trying to emulate pp_entertry() here */
2605 {
c09156bb 2606 register PERL_CONTEXT *cx;
f54cb97a 2607 const I32 gimme = GIMME_V;
ac27b0f5 2608
4633a7c4
LW
2609 ENTER;
2610 SAVETMPS;
ac27b0f5 2611
1d76a5c3 2612 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 2613 PUSHEVAL(cx, 0, 0);
533c011a 2614 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 2615
faef0170 2616 PL_in_eval = EVAL_INEVAL;
4633a7c4 2617 if (flags & G_KEEPERR)
faef0170 2618 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 2619 else
c69006e4 2620 sv_setpvn(ERRSV,"",0);
4633a7c4 2621 }
3280af22 2622 PL_markstack_ptr++;
a0d0e21e 2623
14dd3ad8 2624 JMPENV_PUSH(ret);
6224f72b
GS
2625 switch (ret) {
2626 case 0:
14dd3ad8
GS
2627 redo_body:
2628 call_body((OP*)&myop, FALSE);
312caa8e
CS
2629 retval = PL_stack_sp - (PL_stack_base + oldmark);
2630 if (!(flags & G_KEEPERR))
c69006e4 2631 sv_setpvn(ERRSV,"",0);
a0d0e21e 2632 break;
6224f72b 2633 case 1:
f86702cc 2634 STATUS_ALL_FAILURE;
a0d0e21e 2635 /* FALL THROUGH */
6224f72b 2636 case 2:
a0d0e21e 2637 /* my_exit() was called */
3280af22 2638 PL_curstash = PL_defstash;
a0d0e21e 2639 FREETMPS;
14dd3ad8 2640 JMPENV_POP;
cc3604b1 2641 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2642 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2643 my_exit_jump();
a0d0e21e 2644 /* NOTREACHED */
6224f72b 2645 case 3:
3280af22 2646 if (PL_restartop) {
533c011a 2647 PL_op = PL_restartop;
3280af22 2648 PL_restartop = 0;
312caa8e 2649 goto redo_body;
a0d0e21e 2650 }
3280af22 2651 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2652 if (flags & G_ARRAY)
2653 retval = 0;
2654 else {
2655 retval = 1;
3280af22 2656 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2657 }
312caa8e 2658 break;
a0d0e21e 2659 }
a0d0e21e 2660
3280af22 2661 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
2662 SV **newsp;
2663 PMOP *newpm;
2664 I32 gimme;
c09156bb 2665 register PERL_CONTEXT *cx;
a0a2876f
LW
2666 I32 optype;
2667
2668 POPBLOCK(cx,newpm);
2669 POPEVAL(cx);
3280af22 2670 PL_curpm = newpm;
a0a2876f 2671 LEAVE;
9d4ba2ae
AL
2672 PERL_UNUSED_VAR(newsp);
2673 PERL_UNUSED_VAR(gimme);
2674 PERL_UNUSED_VAR(optype);
a0d0e21e 2675 }
14dd3ad8 2676 JMPENV_POP;
a0d0e21e 2677 }
1e422769 2678
a0d0e21e 2679 if (flags & G_DISCARD) {
3280af22 2680 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2681 retval = 0;
2682 FREETMPS;
2683 LEAVE;
2684 }
533c011a 2685 PL_op = oldop;
a0d0e21e
LW
2686 return retval;
2687}
2688
312caa8e 2689STATIC void
dd374669 2690S_call_body(pTHX_ const OP *myop, bool is_eval)
312caa8e 2691{
97aff369 2692 dVAR;
312caa8e
CS
2693 if (PL_op == myop) {
2694 if (is_eval)
f807eda9 2695 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 2696 else
f807eda9 2697 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
2698 }
2699 if (PL_op)
cea2e8a9 2700 CALLRUNOPS(aTHX);
312caa8e
CS
2701}
2702
6e72f9df 2703/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2704
954c1994
GS
2705/*
2706=for apidoc p||eval_sv
2707
2708Tells Perl to C<eval> the string in the SV.
2709
2710=cut
2711*/
2712
a0d0e21e 2713I32
864dbfa3 2714Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2715
8ac85365 2716 /* See G_* flags in cop.h */
a0d0e21e 2717{
97aff369 2718 dVAR;
924508f0 2719 dSP;
a0d0e21e 2720 UNOP myop; /* fake syntax tree node */
8fa7f367 2721 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 2722 volatile I32 retval = 0;
6224f72b 2723 int ret;
c4420975 2724 OP* const oldop = PL_op;
db36c5a1 2725 dJMPENV;
84902520 2726
4633a7c4
LW
2727 if (flags & G_DISCARD) {
2728 ENTER;
2729 SAVETMPS;
2730 }
2731
462e5cf6 2732 SAVEOP();
533c011a
NIS
2733 PL_op = (OP*)&myop;
2734 Zero(PL_op, 1, UNOP);
3280af22
NIS
2735 EXTEND(PL_stack_sp, 1);
2736 *++PL_stack_sp = sv;
79072805 2737
4633a7c4
LW
2738 if (!(flags & G_NOARGS))
2739 myop.op_flags = OPf_STACKED;
5f66b61c 2740 myop.op_next = NULL;
6e72f9df 2741 myop.op_type = OP_ENTEREVAL;
54310121
PP
2742 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2743 (flags & G_ARRAY) ? OPf_WANT_LIST :
2744 OPf_WANT_SCALAR);
6e72f9df
PP
2745 if (flags & G_KEEPERR)
2746 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2747
dedbcade
DM
2748 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2749 * before a PUSHEVAL, which corrupts the stack after a croak */
2750 TAINT_PROPER("eval_sv()");
2751
14dd3ad8 2752 JMPENV_PUSH(ret);
6224f72b
GS
2753 switch (ret) {
2754 case 0:
14dd3ad8
GS
2755 redo_body:
2756 call_body((OP*)&myop,TRUE);
312caa8e
CS
2757 retval = PL_stack_sp - (PL_stack_base + oldmark);
2758 if (!(flags & G_KEEPERR))
c69006e4 2759 sv_setpvn(ERRSV,"",0);
4633a7c4 2760 break;
6224f72b 2761 case 1:
f86702cc 2762 STATUS_ALL_FAILURE;
4633a7c4 2763 /* FALL THROUGH */
6224f72b 2764 case 2:
4633a7c4 2765 /* my_exit() was called */
3280af22 2766 PL_curstash = PL_defstash;
4633a7c4 2767 FREETMPS;
14dd3ad8 2768 JMPENV_POP;
cc3604b1 2769 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2770 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2771 my_exit_jump();
4633a7c4 2772 /* NOTREACHED */
6224f72b 2773 case 3:
3280af22 2774 if (PL_restartop) {
533c011a 2775 PL_op = PL_restartop;
3280af22 2776 PL_restartop = 0;
312caa8e 2777 goto redo_body;
4633a7c4 2778 }
3280af22 2779 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2780 if (flags & G_ARRAY)
2781 retval = 0;
2782 else {
2783 retval = 1;
3280af22 2784 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2785 }
312caa8e 2786 break;
4633a7c4
LW
2787 }
2788
14dd3ad8 2789 JMPENV_POP;
4633a7c4 2790 if (flags & G_DISCARD) {
3280af22 2791 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2792 retval = 0;
2793 FREETMPS;
2794 LEAVE;
2795 }
533c011a 2796 PL_op = oldop;
4633a7c4
LW
2797 return retval;
2798}
2799
954c1994
GS
2800/*
2801=for apidoc p||eval_pv
2802
2803Tells Perl to C<eval> the given string and return an SV* result.
2804
2805=cut
2806*/
2807
137443ea 2808SV*
864dbfa3 2809Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2810{
97aff369 2811 dVAR;
137443ea
PP
2812 dSP;
2813 SV* sv = newSVpv(p, 0);
2814
864dbfa3 2815 eval_sv(sv, G_SCALAR);
137443ea
PP
2816 SvREFCNT_dec(sv);
2817
2818 SPAGAIN;
2819 sv = POPs;
2820 PUTBACK;
2821
2d8e6c8d 2822 if (croak_on_error && SvTRUE(ERRSV)) {
0510663f 2823 Perl_croak(aTHX_ SvPVx_nolen_const(ERRSV));
2d8e6c8d 2824 }
137443ea
PP
2825
2826 return sv;
2827}
2828
4633a7c4
LW
2829/* Require a module. */
2830
954c1994 2831/*
ccfc67b7
JH
2832=head1 Embedding Functions
2833
954c1994
GS
2834=for apidoc p||require_pv
2835
7d3fb230
BS
2836Tells Perl to C<require> the file named by the string argument. It is
2837analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2838implemented that way; consider using load_module instead.
954c1994 2839
7d3fb230 2840=cut */
954c1994 2841
4633a7c4 2842void
864dbfa3 2843Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2844{
97aff369 2845 dVAR;
d3acc0f7 2846 dSP;
97aff369 2847 SV* sv;
e788e7d3 2848 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2849 PUTBACK;
be41e5d9
NC
2850 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2851 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2852 SPAGAIN;
2853 POPSTACK;
79072805
LW
2854}
2855
79072805 2856void
e1ec3a88 2857Perl_magicname(pTHX_ const char *sym, const char *name, I32 namlen)
79072805 2858{
71315bf2 2859 register GV * const gv = gv_fetchpv(sym, GV_ADD, SVt_PV);
79072805 2860
c4420975 2861 if (gv)
14befaf4 2862 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2863}
2864
76e3520e 2865STATIC void
e1ec3a88 2866S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2867{
ab821d7f 2868 /* This message really ought to be max 23 lines.
75c72d73 2869 * Removed -h because the user already knows that option. Others? */
fb73857a 2870
27da23d5 2871 static const char * const usage_msg[] = {
aefc56c5
SF
2872"-0[octal] specify record separator (\\0, if no argument)",
2873"-A[mod][=pattern] activate all/given assertions",
2874"-a autosplit mode with -n or -p (splits $_ into @F)",
2875"-C[number/list] enables the listed Unicode features",
2876"-c check syntax only (runs BEGIN and CHECK blocks)",
2877"-d[:debugger] run program under debugger",
2878"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2879"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2880"-E program like -e, but enables all optional features",
aefc56c5 2881"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2882"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2883"-i[extension] edit <> files in place (makes backup if extension supplied)",
2884"-Idirectory specify @INC/#include directory (several -I's allowed)",
2885"-l[octal] enable line ending processing, specifies line terminator",
2886"-[mM][-]module execute \"use/no module...\" before executing program",
2887"-n assume \"while (<>) { ... }\" loop around program",
2888"-p assume loop like -n but print line also, like sed",
2889"-P run program through C preprocessor before compilation",
2890"-s enable rudimentary parsing for switches after programfile",
2891"-S look for programfile using PATH environment variable",
2892"-t enable tainting warnings",
2893"-T enable tainting checks",
2894"-u dump core after parsing program",
2895"-U allow unsafe operations",
2896"-v print version, subversion (includes VERY IMPORTANT perl info)",
2897"-V[:variable] print configuration summary (or a single Config.pm variable)",
2898"-w enable many useful warnings (RECOMMENDED)",
2899"-W enable all warnings",
2900"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2901"-X disable all warnings",
fb73857a
PP
2902"\n",
2903NULL
2904};
27da23d5 2905 const char * const *p = usage_msg;
fb73857a 2906
b0e47665
GS
2907 PerlIO_printf(PerlIO_stdout(),
2908 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2909 name);
fb73857a 2910 while (*p)
b0e47665 2911 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2912}
2913
b4ab917c
DM
2914/* convert a string of -D options (or digits) into an int.
2915 * sets *s to point to the char after the options */
2916
2917#ifdef DEBUGGING
2918int
e1ec3a88 2919Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2920{
27da23d5 2921 static const char * const usage_msgd[] = {
e6e64d9b
JC
2922 " Debugging flag values: (see also -d)",
2923 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2924 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2925 " l Context (loop) stack processing",
2926 " t Trace execution",
2927 " o Method and overloading resolution",
2928 " c String/numeric conversions",
2929 " P Print profiling info, preprocessor command for -P, source file input state",
2930 " m Memory allocation",
2931 " f Format processing",
2932 " r Regular expression parsing and execution",
2933 " x Syntax tree dump",
3679267a 2934 " u Tainting checks",
e6e64d9b
JC
2935 " H Hash dump -- usurps values()",
2936 " X Scratchpad allocation",
2937 " D Cleaning up",
2938 " S Thread synchronization",
2939 " T Tokenising",
2940 " R Include reference counts of dumped variables (eg when using -Ds)",
2941 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2942 " v Verbose: use in conjunction with other flags",
2943 " C Copy On Write",
2944 " A Consistency checks on internal structures",
3679267a 2945 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2946 NULL
2947 };
b4ab917c
DM
2948 int i = 0;
2949 if (isALPHA(**s)) {
2950 /* if adding extra options, remember to update DEBUG_MASK */
bfed75c6 2951 static const char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
b4ab917c
DM
2952
2953 for (; isALNUM(**s); (*s)++) {
c4420975 2954 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2955 if (d)
2956 i |= 1 << (d - debopts);
2957 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2958 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2959 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2960 }
2961 }
e6e64d9b 2962 else if (isDIGIT(**s)) {
b4ab917c
DM
2963 i = atoi(*s);
2964 for (; isALNUM(**s); (*s)++) ;
2965 }
ddcf8bc1 2966 else if (givehelp) {
06e869a4 2967 const char *const *p = usage_msgd;
e6e64d9b
JC
2968 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2969 }
b4ab917c
DM
2970# ifdef EBCDIC
2971 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2972 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2973 "-Dp not implemented on this platform\n");
2974# endif
2975 return i;
2976}
2977#endif
2978
79072805
LW
2979/* This routine handles any switches that can be given during run */
2980
2981char *
97bd5664 2982Perl_moreswitches(pTHX_ char *s)
79072805 2983{
27da23d5 2984 dVAR;
84c133a0 2985 UV rschar;
79072805
LW
2986
2987 switch (*s) {
2988 case '0':
a863c7d1 2989 {
f2095865 2990 I32 flags = 0;
a3b680e6 2991 STRLEN numlen;
f2095865
JH
2992
2993 SvREFCNT_dec(PL_rs);
2994 if (s[1] == 'x' && s[2]) {
a3b680e6 2995 const char *e = s+=2;
f2095865
JH
2996 U8 *tmps;
2997
a3b680e6
AL
2998 while (*e)
2999 e++;
f2095865
JH
3000 numlen = e - s;
3001 flags = PERL_SCAN_SILENT_ILLDIGIT;
3002 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3003 if (s + numlen < e) {
3004 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3005 numlen = 0;
3006 s--;
3007 }
396482e1 3008 PL_rs = newSVpvs("");
c5661c80 3009 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3010 tmps = (U8*)SvPVX(PL_rs);
3011 uvchr_to_utf8(tmps, rschar);
3012 SvCUR_set(PL_rs, UNISKIP(rschar));
3013 SvUTF8_on(PL_rs);
3014 }
3015 else {
3016 numlen = 4;
3017 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3018 if (rschar & ~((U8)~0))
3019 PL_rs = &PL_sv_undef;
3020 else if (!rschar && numlen >= 2)
396482e1 3021 PL_rs = newSVpvs("");
f2095865
JH
3022 else {
3023 char ch = (char)rschar;
3024 PL_rs = newSVpvn(&ch, 1);
3025 }
3026 }
800633c3 3027 sv_setsv(get_sv("/", TRUE), PL_rs);
f2095865 3028 return s + numlen;
a863c7d1 3029 }
46487f74 3030 case 'C':
a05d7ebb 3031 s++;
dd374669 3032 PL_unicode = parse_unicode_opts( (const char **)&s );
46487f74 3033 return s;
2304df62 3034 case 'F':
3280af22 3035 PL_minus_F = TRUE;
ebce5377
RGS
3036 PL_splitstr = ++s;
3037 while (*s && !isSPACE(*s)) ++s;
e49e380e 3038 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3039 return s;
79072805 3040 case 'a':
3280af22 3041 PL_minus_a = TRUE;
79072805
LW
3042 s++;
3043 return s;
3044 case 'c':
3280af22 3045 PL_minus_c = TRUE;
79072805
LW
3046 s++;
3047 return s;
3048 case 'd':
97bd5664 3049 forbid_setid('d', -1);
4633a7c4 3050 s++;
2cbb2ee1
RGS
3051
3052 /* -dt indicates to the debugger that threads will be used */
3053 if (*s == 't' && !isALNUM(s[1])) {
3054 ++s;
3055 my_setenv("PERL5DB_THREADED", "1");
3056 }
3057
70c94a19
RR
3058 /* The following permits -d:Mod to accepts arguments following an =
3059 in the fashion that -MSome::Mod does. */
3060 if (*s == ':' || *s == '=') {
06b5626a 3061 const char *start;
396482e1 3062 SV * const sv = newSVpvs("use Devel::");
70c94a19
RR
3063 start = ++s;
3064 /* We now allow -d:Module=Foo,Bar */
3065 while(isALNUM(*s) || *s==':') ++s;
3066 if (*s != '=')
3067 sv_catpv(sv, start);
3068 else {
3069 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3070 /* Don't use NUL as q// delimiter here, this string goes in the
3071 * environment. */
3072 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3073 }
4633a7c4 3074 s += strlen(s);
184f32ec 3075 my_setenv("PERL5DB", SvPV_nolen_const(sv));
4633a7c4 3076 }
ed094faf 3077 if (!PL_perldb) {
3280af22 3078 PL_perldb = PERLDB_ALL;
a0d0e21e 3079 init_debugger();
ed094faf 3080 }
79072805
LW
3081 return s;
3082 case 'D':
0453d815 3083 {
79072805 3084#ifdef DEBUGGING
97bd5664 3085 forbid_setid('D', -1);
b4ab917c 3086 s++;
dd374669 3087 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3088#else /* !DEBUGGING */
0453d815 3089 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3090 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3091 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3092 for (s++; isALNUM(*s); s++) ;
79072805 3093#endif
79072805 3094 return s;
0453d815 3095 }
4633a7c4 3096 case 'h':
ac27b0f5 3097 usage(PL_origargv[0]);
7ca617d0 3098 my_exit(0);
79072805 3099 case 'i':
43c5f42d 3100 Safefree(PL_inplace);
c030f24b
GH
3101#if defined(__CYGWIN__) /* do backup extension automagically */
3102 if (*(s+1) == '\0') {
c86a4f2e 3103 PL_inplace = savepvs(".bak");
c030f24b
GH
3104 return s+1;
3105 }
3106#endif /* __CYGWIN__ */
3280af22 3107 PL_inplace = savepv(s+1);
a6e20a40
AL
3108 for (s = PL_inplace; *s && !isSPACE(*s); s++)
3109 ;
7b8d334a 3110 if (*s) {
fb73857a 3111 *s++ = '\0';
7b8d334a
GS
3112 if (*s == '-') /* Additional switches on #! line. */
3113 s++;
3114 }
fb73857a 3115 return s;
4e49a025 3116 case 'I': /* -I handled both here and in parse_body() */
97bd5664 3117 forbid_setid('I', -1);
fb73857a
PP
3118 ++s;
3119 while (*s && isSPACE(*s))
3120 ++s;
3121 if (*s) {
774d564b 3122 char *e, *p;
0df16ed7
GS
3123 p = s;
3124 /* ignore trailing spaces (possibly followed by other switches) */
3125 do {
3126 for (e = p; *e && !isSPACE(*e); e++) ;
3127 p = e;
3128 while (isSPACE(*p))
3129 p++;
3130 } while (*p && *p != '-');
3131 e = savepvn(s, e-s);
88fe16b2 3132 incpush(e, TRUE, TRUE, FALSE, FALSE);
0df16ed7
GS
3133 Safefree(e);
3134 s = p;
3135 if (*s == '-')
3136 s++;
79072805
LW
3137 }
3138 else
a67e862a 3139 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3140 return s;
79072805 3141 case 'l':
3280af22 3142 PL_minus_l = TRUE;
79072805 3143 s++;
7889fe52
NIS
3144 if (PL_ors_sv) {
3145 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3146 PL_ors_sv = NULL;
7889fe52 3147 }
79072805 3148 if (isDIGIT(*s)) {
53305cf1 3149 I32 flags = 0;
a3b680e6 3150 STRLEN numlen;
396482e1 3151 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3152 numlen = 3 + (*s == '0');
3153 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3154 s += numlen;
3155 }
3156 else {
8bfdd7d9 3157 if (RsPARA(PL_rs)) {
396482e1 3158 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3159 }
3160 else {
8bfdd7d9 3161 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3162 }
79072805
LW
3163 }
3164 return s;
06492da6 3165 case 'A':
97bd5664 3166 forbid_setid('A', -1);
930366bd
RGS
3167 if (!PL_preambleav)
3168 PL_preambleav = newAV();
aefc56c5
SF
3169 s++;
3170 {
44f8325f 3171 char * const start = s;
396482e1 3172 SV * const sv = newSVpvs("use assertions::activate");
aefc56c5
SF
3173 while(isALNUM(*s) || *s == ':') ++s;
3174 if (s != start) {
396482e1 3175 sv_catpvs(sv, "::");
aefc56c5
SF
3176 sv_catpvn(sv, start, s-start);
3177 }
3178 if (*s == '=') {
0c5a913d 3179 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q%c%s%c)", 0, ++s, 0);
aefc56c5
SF
3180 s+=strlen(s);
3181 }
3182 else if (*s != '\0') {
551405c4 3183 Perl_croak(aTHX_ "Can't use '%c' after -A%.*s", *s, (int)(s-start), start);
aefc56c5 3184 }
06492da6 3185 av_push(PL_preambleav, sv);
aefc56c5 3186 return s;
06492da6 3187 }
1a30305b 3188 case 'M':
97bd5664 3189 forbid_setid('M', -1); /* XXX ? */
1a30305b
PP
3190 /* FALL THROUGH */
3191 case 'm':
97bd5664 3192 forbid_setid('m', -1); /* XXX ? */
1a30305b 3193 if (*++s) {
a5f75d66 3194 char *start;
11343788 3195 SV *sv;
e1ec3a88 3196 const char *use = "use ";
a5f75d66 3197 /* -M-foo == 'no foo' */
d0043bd1
NC
3198 /* Leading space on " no " is deliberate, to make both
3199 possibilities the same length. */
3200 if (*s == '-') { use = " no "; ++s; }
3201 sv = newSVpvn(use,4);
a5f75d66 3202 start = s;
1a30305b 3203 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
3204 while(isALNUM(*s) || *s==':') ++s;
3205 if (*s != '=') {
11343788 3206 sv_catpv(sv, start);
c07a80fd
PP
3207 if (*(start-1) == 'm') {
3208 if (*s != '\0')
cea2e8a9 3209 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3210 sv_catpvs( sv, " ()");
c07a80fd
PP
3211 }
3212 } else {
6df41af2 3213 if (s == start)
be98fb35
GS
3214 Perl_croak(aTHX_ "Module name required with -%c option",
3215 s[-1]);
11343788 3216 sv_catpvn(sv, start, s-start);
396482e1
GA
3217 sv_catpvs(sv, " split(/,/,q");
3218 sv_catpvs(sv, "\0"); /* Use NUL as q//-delimiter. */
11343788 3219 sv_catpv(sv, ++s);
396482e1 3220 sv_catpvs(sv, "\0)");
c07a80fd 3221 }
1a30305b 3222 s += strlen(s);
5c831c24 3223 if (!PL_preambleav)
3280af22
NIS
3224 PL_preambleav = newAV();
3225 av_push(PL_preambleav, sv);
1a30305b
PP
3226 }
3227 else
9e81e6a1 3228 Perl_croak(aTHX_ "Missing argument to -%c", *(s-1));
1a30305b 3229 return s;
79072805 3230 case 'n':
3280af22 3231 PL_minus_n = TRUE;
79072805
LW
3232 s++;
3233 return s;
3234 case 'p':
3280af22 3235 PL_minus_p = TRUE;
79072805
LW
3236 s++;
3237 return s;
3238 case 's':
97bd5664 3239 forbid_setid('s', -1);
3280af22 3240 PL_doswitches = TRUE;
79072805
LW
3241 s++;
3242 return s;
6537fe72
MS
3243 case 't':
3244 if (!PL_tainting)
22f7c9c9 3245 TOO_LATE_FOR('t');
6537fe72
MS
3246 s++;
3247 return s;
463ee0b2 3248 case 'T':
3280af22 3249 if (!PL_tainting)
22f7c9c9 3250 TOO_LATE_FOR('T');
463ee0b2
LW
3251 s++;
3252 return s;
79072805 3253 case 'u':
bf4acbe4
GS
3254#ifdef MACOS_TRADITIONAL
3255 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3256#endif
3280af22 3257 PL_do_undump = TRUE;
79072805
LW
3258 s++;
3259 return s;
3260 case 'U':
3280af22 3261 PL_unsafe = TRUE;
79072805
LW
3262 s++;
3263 return s;
3264 case 'v':
d7aa5382 3265 if (!sv_derived_from(PL_patchlevel, "version"))
7a5b473e 3266 upg_version(PL_patchlevel);
8e9464f1 3267#if !defined(DGUX)
b0e47665 3268 PerlIO_printf(PerlIO_stdout(),
7850f74c
GA
3269 Perl_form(aTHX_ "\nThis is perl, %"SVf
3270#ifdef PERL_PATCHNUM
3271 " DEVEL" STRINGIFY(PERL_PATCHNUM)
3272#endif
3273 " built for %s",
d7aa5382
JP
3274 vstringify(PL_patchlevel),
3275 ARCHNAME));
8e9464f1
JH
3276#else /* DGUX */
3277/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3278 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3279 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
d7aa5382 3280 vstringify(PL_patchlevel)));
8e9464f1
JH
3281 PerlIO_printf(PerlIO_stdout(),
3282 Perl_form(aTHX_ " built under %s at %s %s\n",
3283 OSNAME, __DATE__, __TIME__));
3284 PerlIO_printf(PerlIO_stdout(),
3285 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3286 OSVERS));
8e9464f1
JH
3287#endif /* !DGUX */
3288
fb73857a
PP
3289#if defined(LOCAL_PATCH_COUNT)
3290 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3291 PerlIO_printf(PerlIO_stdout(),
3292 "\n(with %d registered patch%s, "
3293 "see perl -V for more detail)",
3294 (int)LOCAL_PATCH_COUNT,
3295 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3296#endif
1a30305b 3297
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
3246d7a3 3299 "\n\nCopyright 1987-2006, Larry Wall\n");
eae9c151
JH
3300#ifdef MACOS_TRADITIONAL
3301 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3302 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3303 "maintained by Chris Nandor\n");
eae9c151 3304#endif
79072805 3305#ifdef MSDOS
b0e47665
GS
3306 PerlIO_printf(PerlIO_stdout(),
3307 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3308#endif
3309#ifdef DJGPP
b0e47665
GS
3310 PerlIO_printf(PerlIO_stdout(),
3311 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3312 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3313#endif
79072805 3314#ifdef OS2
b0e47665
GS
3315 PerlIO_printf(PerlIO_stdout(),
3316 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3317 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3318#endif
79072805 3319#ifdef atarist
b0e47665
GS
3320 PerlIO_printf(PerlIO_stdout(),
3321 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3322#endif
a3f9223b 3323#ifdef __BEOS__
b0e47665
GS
3324 PerlIO_printf(PerlIO_stdout(),
3325 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3326#endif
1d84e8df 3327#ifdef MPE
b0e47665 3328 PerlIO_printf(PerlIO_stdout(),
e583a879 3329 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3330#endif
9d116dd7 3331#ifdef OEMVS
b0e47665
GS
3332 PerlIO_printf(PerlIO_stdout(),
3333 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3334#endif
495c5fdc 3335#ifdef __VOS__
b0e47665 3336 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3337 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3338#endif
092bebab 3339#ifdef __OPEN_VM
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3342#endif
a1a0e61e 3343#ifdef POSIX_BC
b0e47665
GS
3344 PerlIO_printf(PerlIO_stdout(),
3345 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3346#endif
61ae2fbf 3347#ifdef __MINT__
b0e47665
GS
3348 PerlIO_printf(PerlIO_stdout(),
3349 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3350#endif
f83d2536 3351#ifdef EPOC
b0e47665 3352 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3353 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3354#endif
e1caacb4 3355#ifdef UNDER_CE
b475b3e6
JH
3356 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3357 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3358 wce_hitreturn();
3359#endif
a0fd4948 3360#ifdef __SYMBIAN32__
27da23d5
JH
3361 PerlIO_printf(PerlIO_stdout(),
3362 "Symbian port by Nokia, 2004-2005\n");
3363#endif
baed7233
DL
3364#ifdef BINARY_BUILD_NOTICE
3365 BINARY_BUILD_NOTICE;
3366#endif
b0e47665
GS
3367 PerlIO_printf(PerlIO_stdout(),
3368 "\n\
79072805 3369Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3370GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3371Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3372this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3373Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3374 my_exit(0);
79072805 3375 case 'w':
599cee73 3376 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 3377 PL_dowarn |= G_WARN_ON;
599cee73
PM
3378 s++;
3379 return s;
3380 case 'W':
ac27b0f5 3381 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
3382 if (!specialWARN(PL_compiling.cop_warnings))
3383 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3384 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3385 s++;
3386 return s;
3387 case 'X':
ac27b0f5 3388 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
3389 if (!specialWARN(PL_compiling.cop_warnings))
3390 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 3391 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3392 s++;
3393 return s;
a0d0e21e 3394 case '*':
79072805
LW
3395 case ' ':
3396 if (s[1] == '-') /* Additional switches on #! line. */
3397 return s+2;
3398 break;
a0d0e21e 3399 case '-':
79072805 3400 case 0:
51882d45 3401#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3402 case '\r':
3403#endif
79072805
LW
3404 case '\n':
3405 case '\t':
3406 break;
aa689395
PP
3407#ifdef ALTERNATE_SHEBANG
3408 case 'S': /* OS/2 needs -S on "extproc" line. */
3409 break;
3410#endif
a0d0e21e 3411 case 'P':
3280af22 3412 if (PL_preprocess)
a0d0e21e
LW
3413 return s+1;
3414 /* FALL THROUGH */
79072805 3415 default:
cea2e8a9 3416 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3417 }
bd61b366 3418 return NULL;
79072805
LW
3419}
3420
3421/* compliments of Tom Christiansen */
3422
3423/* unexec() can be found in the Gnu emacs distribution */
ee580363 3424/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3425
3426void
864dbfa3 3427Perl_my_unexec(pTHX)
79072805 3428{
b37c2d43 3429 PERL_UNUSED_CONTEXT;
79072805 3430#ifdef UNEXEC
b37c2d43
AL
3431 SV * prog = newSVpv(BIN_EXP, 0);
3432 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3433 int status = 1;
79072805
LW
3434 extern int etext;
3435
396482e1 3436 sv_catpvs(prog, "/perl");
396482e1 3437 sv_catpvs(file, ".perldump");
79072805 3438
ee580363
GS
3439 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3440 /* unexec prints msg to stderr in case of failure */
6ad3d225 3441 PerlProc_exit(status);
79072805 3442#else
a5f75d66
AD
3443# ifdef VMS
3444# include <lib$routines.h>
3445 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3446# elif defined(WIN32) || defined(__CYGWIN__)
3447 Perl_croak(aTHX_ "dump is not supported");
aa689395 3448# else
79072805 3449 ABORT(); /* for use with undump */
aa689395 3450# endif
a5f75d66 3451#endif
79072805
LW
3452}
3453
cb68f92d
GS
3454/* initialize curinterp */
3455STATIC void
cea2e8a9 3456S_init_interp(pTHX)
cb68f92d 3457{
97aff369 3458 dVAR;
acfe0abc
GS
3459#ifdef MULTIPLICITY
3460# define PERLVAR(var,type)
3461# define PERLVARA(var,n,type)
3462# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3463# define PERLVARI(var,type,init) aTHX->var = init;
3464# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3465# else
acfe0abc
GS
3466# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3467# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3468# endif
acfe0abc 3469# include "intrpvar.h"
b7f7fff6 3470# include "thrdvar.h"
acfe0abc
GS
3471# undef PERLVAR
3472# undef PERLVARA
3473# undef PERLVARI
3474# undef PERLVARIC
3475#else
3476# define PERLVAR(var,type)
3477# define PERLVARA(var,n,type)
3478# define PERLVARI(var,type,init) PL_##var = init;
3479# define PERLVARIC(var,type,init) PL_##var = init;
3480# include "intrpvar.h"
b7f7fff6 3481# include "thrdvar.h"
acfe0abc
GS
3482# undef PERLVAR
3483# undef PERLVARA
3484# undef PERLVARI
3485# undef PERLVARIC
cb68f92d
GS
3486#endif
3487
cb68f92d
GS
3488}
3489
76e3520e 3490STATIC void
cea2e8a9 3491S_init_main_stash(pTHX)
79072805 3492{
97aff369 3493 dVAR;
463ee0b2 3494 GV *gv;
6e72f9df 3495
3280af22 3496 PL_curstash = PL_defstash = newHV();
23579a14
NC
3497 /* We know that the string "main" will be in the global shared string
3498 table, so it's a small saving to use it rather than allocate another
3499 8 bytes. */
18916d0d